patch-2.4.22 linux-2.4.22/drivers/scsi/aic79xx/aic79xx_core.c
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- Lines: 9506
- Date:
1969-12-31 16:00:00.000000000 -0800
- Orig file:
linux-2.4.21/drivers/scsi/aic79xx/aic79xx_core.c
- Orig date:
2003-06-13 07:51:36.000000000 -0700
diff -urN linux-2.4.21/drivers/scsi/aic79xx/aic79xx_core.c linux-2.4.22/drivers/scsi/aic79xx/aic79xx_core.c
@@ -1,9505 +0,0 @@
-/*
- * Core routines and tables shareable across OS platforms.
- *
- * Copyright (c) 1994-2002 Justin T. Gibbs.
- * Copyright (c) 2000-2003 Adaptec Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions, and the following disclaimer,
- * without modification.
- * 2. Redistributions in binary form must reproduce at minimum a disclaimer
- * substantially similar to the "NO WARRANTY" disclaimer below
- * ("Disclaimer") and any redistribution must be conditioned upon
- * including a substantially similar Disclaimer requirement for further
- * binary redistribution.
- * 3. Neither the names of the above-listed copyright holders nor the names
- * of any contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * Alternatively, this software may be distributed under the terms of the
- * GNU General Public License ("GPL") version 2 as published by the Free
- * Software Foundation.
- *
- * NO WARRANTY
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
- * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGES.
- *
- * $Id: //depot/aic7xxx/aic7xxx/aic79xx.c#156 $
- *
- * $FreeBSD$
- */
-
-#ifdef __linux__
-#include "aic79xx_osm.h"
-#include "aic79xx_inline.h"
-#include "aicasm/aicasm_insformat.h"
-#else
-#include <dev/aic7xxx/aic79xx_osm.h>
-#include <dev/aic7xxx/aic79xx_inline.h>
-#include <dev/aic7xxx/aicasm/aicasm_insformat.h>
-#endif
-
-/******************************** Globals *************************************/
-struct ahd_softc_tailq ahd_tailq = TAILQ_HEAD_INITIALIZER(ahd_tailq);
-
-/***************************** Lookup Tables **********************************/
-char *ahd_chip_names[] =
-{
- "NONE",
- "aic7901",
- "aic7902",
- "aic7901A"
-};
-static const u_int num_chip_names = NUM_ELEMENTS(ahd_chip_names);
-
-/*
- * Hardware error codes.
- */
-struct ahd_hard_error_entry {
- uint8_t errno;
- char *errmesg;
-};
-
-static struct ahd_hard_error_entry ahd_hard_errors[] = {
- { DSCTMOUT, "Discard Timer has timed out" },
- { ILLOPCODE, "Illegal Opcode in sequencer program" },
- { SQPARERR, "Sequencer Parity Error" },
- { DPARERR, "Data-path Parity Error" },
- { MPARERR, "Scratch or SCB Memory Parity Error" },
- { CIOPARERR, "CIOBUS Parity Error" },
-};
-static const u_int num_errors = NUM_ELEMENTS(ahd_hard_errors);
-
-static struct ahd_phase_table_entry ahd_phase_table[] =
-{
- { P_DATAOUT, MSG_NOOP, "in Data-out phase" },
- { P_DATAIN, MSG_INITIATOR_DET_ERR, "in Data-in phase" },
- { P_DATAOUT_DT, MSG_NOOP, "in DT Data-out phase" },
- { P_DATAIN_DT, MSG_INITIATOR_DET_ERR, "in DT Data-in phase" },
- { P_COMMAND, MSG_NOOP, "in Command phase" },
- { P_MESGOUT, MSG_NOOP, "in Message-out phase" },
- { P_STATUS, MSG_INITIATOR_DET_ERR, "in Status phase" },
- { P_MESGIN, MSG_PARITY_ERROR, "in Message-in phase" },
- { P_BUSFREE, MSG_NOOP, "while idle" },
- { 0, MSG_NOOP, "in unknown phase" }
-};
-
-/*
- * In most cases we only wish to itterate over real phases, so
- * exclude the last element from the count.
- */
-static const u_int num_phases = NUM_ELEMENTS(ahd_phase_table) - 1;
-
-/* Our Sequencer Program */
-#include "aic79xx_seq.h"
-
-/**************************** Function Declarations ***************************/
-static void ahd_handle_transmission_error(struct ahd_softc *ahd);
-static void ahd_handle_lqiphase_error(struct ahd_softc *ahd,
- u_int lqistat1);
-static int ahd_handle_pkt_busfree(struct ahd_softc *ahd,
- u_int busfreetime);
-static int ahd_handle_nonpkt_busfree(struct ahd_softc *ahd);
-static void ahd_handle_proto_violation(struct ahd_softc *ahd);
-static void ahd_force_renegotiation(struct ahd_softc *ahd,
- struct ahd_devinfo *devinfo);
-
-static struct ahd_tmode_tstate*
- ahd_alloc_tstate(struct ahd_softc *ahd,
- u_int scsi_id, char channel);
-#ifdef AHD_TARGET_MODE
-static void ahd_free_tstate(struct ahd_softc *ahd,
- u_int scsi_id, char channel, int force);
-#endif
-static void ahd_devlimited_syncrate(struct ahd_softc *ahd,
- struct ahd_initiator_tinfo *,
- u_int *period,
- u_int *ppr_options,
- role_t role);
-static void ahd_update_neg_table(struct ahd_softc *ahd,
- struct ahd_devinfo *devinfo,
- struct ahd_transinfo *tinfo);
-static void ahd_update_pending_scbs(struct ahd_softc *ahd);
-static void ahd_fetch_devinfo(struct ahd_softc *ahd,
- struct ahd_devinfo *devinfo);
-static void ahd_scb_devinfo(struct ahd_softc *ahd,
- struct ahd_devinfo *devinfo,
- struct scb *scb);
-static void ahd_setup_initiator_msgout(struct ahd_softc *ahd,
- struct ahd_devinfo *devinfo,
- struct scb *scb);
-static void ahd_build_transfer_msg(struct ahd_softc *ahd,
- struct ahd_devinfo *devinfo);
-static void ahd_construct_sdtr(struct ahd_softc *ahd,
- struct ahd_devinfo *devinfo,
- u_int period, u_int offset);
-static void ahd_construct_wdtr(struct ahd_softc *ahd,
- struct ahd_devinfo *devinfo,
- u_int bus_width);
-static void ahd_construct_ppr(struct ahd_softc *ahd,
- struct ahd_devinfo *devinfo,
- u_int period, u_int offset,
- u_int bus_width, u_int ppr_options);
-static void ahd_clear_msg_state(struct ahd_softc *ahd);
-static void ahd_handle_message_phase(struct ahd_softc *ahd);
-typedef enum {
- AHDMSG_1B,
- AHDMSG_2B,
- AHDMSG_EXT
-} ahd_msgtype;
-static int ahd_sent_msg(struct ahd_softc *ahd, ahd_msgtype type,
- u_int msgval, int full);
-static int ahd_parse_msg(struct ahd_softc *ahd,
- struct ahd_devinfo *devinfo);
-static int ahd_handle_msg_reject(struct ahd_softc *ahd,
- struct ahd_devinfo *devinfo);
-static void ahd_handle_ign_wide_residue(struct ahd_softc *ahd,
- struct ahd_devinfo *devinfo);
-static void ahd_reinitialize_dataptrs(struct ahd_softc *ahd);
-static void ahd_handle_devreset(struct ahd_softc *ahd,
- struct ahd_devinfo *devinfo,
- u_int lun, cam_status status,
- char *message, int verbose_level);
-#if AHD_TARGET_MODE
-static void ahd_setup_target_msgin(struct ahd_softc *ahd,
- struct ahd_devinfo *devinfo,
- struct scb *scb);
-#endif
-
-static u_int ahd_sglist_size(struct ahd_softc *ahd);
-static u_int ahd_sglist_allocsize(struct ahd_softc *ahd);
-static bus_dmamap_callback_t
- ahd_dmamap_cb;
-static void ahd_initialize_hscbs(struct ahd_softc *ahd);
-static int ahd_init_scbdata(struct ahd_softc *ahd);
-static void ahd_fini_scbdata(struct ahd_softc *ahd);
-static void ahd_setup_iocell_workaround(struct ahd_softc *ahd);
-static void ahd_iocell_first_selection(struct ahd_softc *ahd);
-static void ahd_add_col_list(struct ahd_softc *ahd,
- struct scb *scb, u_int col_idx);
-static void ahd_rem_col_list(struct ahd_softc *ahd,
- struct scb *scb);
-static void ahd_chip_init(struct ahd_softc *ahd);
-static void ahd_qinfifo_requeue(struct ahd_softc *ahd,
- struct scb *prev_scb,
- struct scb *scb);
-static int ahd_qinfifo_count(struct ahd_softc *ahd);
-static int ahd_search_scb_list(struct ahd_softc *ahd, int target,
- char channel, int lun, u_int tag,
- role_t role, uint32_t status,
- ahd_search_action action,
- u_int *list_head, u_int tid);
-static void ahd_stitch_tid_list(struct ahd_softc *ahd,
- u_int tid_prev, u_int tid_cur,
- u_int tid_next);
-static void ahd_add_scb_to_free_list(struct ahd_softc *ahd,
- u_int scbid);
-static u_int ahd_rem_wscb(struct ahd_softc *ahd, u_int scbid,
- u_int prev, u_int next, u_int tid);
-static void ahd_reset_current_bus(struct ahd_softc *ahd);
-static ahd_callback_t ahd_reset_poll;
-static ahd_callback_t ahd_stat_timer;
-#ifdef AHD_DUMP_SEQ
-static void ahd_dumpseq(struct ahd_softc *ahd);
-#endif
-static void ahd_loadseq(struct ahd_softc *ahd);
-static int ahd_check_patch(struct ahd_softc *ahd,
- struct patch **start_patch,
- u_int start_instr, u_int *skip_addr);
-static u_int ahd_resolve_seqaddr(struct ahd_softc *ahd,
- u_int address);
-static void ahd_download_instr(struct ahd_softc *ahd,
- u_int instrptr, uint8_t *dconsts);
-static int ahd_probe_stack_size(struct ahd_softc *ahd);
-#ifdef AHD_TARGET_MODE
-static void ahd_queue_lstate_event(struct ahd_softc *ahd,
- struct ahd_tmode_lstate *lstate,
- u_int initiator_id,
- u_int event_type,
- u_int event_arg);
-static void ahd_update_scsiid(struct ahd_softc *ahd,
- u_int targid_mask);
-static int ahd_handle_target_cmd(struct ahd_softc *ahd,
- struct target_cmd *cmd);
-#endif
-
-/******************************** Private Inlines *****************************/
-static __inline void ahd_assert_atn(struct ahd_softc *ahd);
-static __inline int ahd_currently_packetized(struct ahd_softc *ahd);
-static __inline int ahd_set_active_fifo(struct ahd_softc *ahd);
-
-static __inline void
-ahd_assert_atn(struct ahd_softc *ahd)
-{
- ahd_outb(ahd, SCSISIGO, ATNO);
-}
-
-/*
- * Determine if the current connection has a packetized
- * agreement. This does not necessarily mean that we
- * are currently in a packetized transfer. We could
- * just as easily be sending or receiving a message.
- */
-static __inline int
-ahd_currently_packetized(struct ahd_softc *ahd)
-{
- ahd_mode_state saved_modes;
- int packetized;
-
- saved_modes = ahd_save_modes(ahd);
- if ((ahd->bugs & AHD_PKTIZED_STATUS_BUG) != 0) {
- /*
- * The packetized bit refers to the last
- * connection, not the current one. Check
- * for non-zero LQISTATE instead.
- */
- ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG);
- packetized = ahd_inb(ahd, LQISTATE) != 0;
- } else {
- ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
- packetized = ahd_inb(ahd, LQISTAT2) & PACKETIZED;
- }
- ahd_restore_modes(ahd, saved_modes);
- return (packetized);
-}
-
-static __inline int
-ahd_set_active_fifo(struct ahd_softc *ahd)
-{
- u_int active_fifo;
-
- AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK);
- active_fifo = ahd_inb(ahd, DFFSTAT) & CURRFIFO;
- switch (active_fifo) {
- case 0:
- case 1:
- ahd_set_modes(ahd, active_fifo, active_fifo);
- return (1);
- default:
- return (0);
- }
-}
-
-/************************* Sequencer Execution Control ************************/
-/*
- * Restart the sequencer program from address zero
- */
-void
-ahd_restart(struct ahd_softc *ahd)
-{
-
- ahd_pause(ahd);
-
- ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
-
- /* No more pending messages */
- ahd_clear_msg_state(ahd);
- ahd_outb(ahd, SCSISIGO, 0); /* De-assert BSY */
- ahd_outb(ahd, MSG_OUT, MSG_NOOP); /* No message to send */
- ahd_outb(ahd, SXFRCTL1, ahd_inb(ahd, SXFRCTL1) & ~BITBUCKET);
- ahd_outb(ahd, SEQINTCTL, 0);
- ahd_outb(ahd, LASTPHASE, P_BUSFREE);
- ahd_outb(ahd, SEQ_FLAGS, 0);
- ahd_outb(ahd, SAVED_SCSIID, 0xFF);
- ahd_outb(ahd, SAVED_LUN, 0xFF);
-
- /*
- * Ensure that the sequencer's idea of TQINPOS
- * matches our own. The sequencer increments TQINPOS
- * only after it sees a DMA complete and a reset could
- * occur before the increment leaving the kernel to believe
- * the command arrived but the sequencer to not.
- */
- ahd_outb(ahd, TQINPOS, ahd->tqinfifonext);
-
- /* Always allow reselection */
- ahd_outb(ahd, SCSISEQ1,
- ahd_inb(ahd, SCSISEQ_TEMPLATE) & (ENSELI|ENRSELI|ENAUTOATNP));
- /* Ensure that no DMA operations are in progress */
- ahd_set_modes(ahd, AHD_MODE_CCHAN, AHD_MODE_CCHAN);
- ahd_outb(ahd, SCBHCNT, 0);
- ahd_outb(ahd, CCSCBCTL, CCSCBRESET);
- ahd_outb(ahd, SEQCTL0, FASTMODE|SEQRESET);
- ahd_unpause(ahd);
-}
-
-void
-ahd_clear_fifo(struct ahd_softc *ahd, u_int fifo)
-{
- ahd_mode_state saved_modes;
-
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_FIFOS) != 0)
- printf("%s: Clearing FIFO %d\n", ahd_name(ahd), fifo);
-#endif
- saved_modes = ahd_save_modes(ahd);
- ahd_set_modes(ahd, fifo, fifo);
- ahd_outb(ahd, DFFSXFRCTL, RSTCHN|CLRSHCNT);
- if ((ahd_inb(ahd, SG_STATE) & FETCH_INPROG) != 0)
- ahd_outb(ahd, CCSGCTL, CCSGRESET);
- ahd_outb(ahd, LONGJMP_ADDR + 1, INVALID_ADDR);
- ahd_outb(ahd, SG_STATE, 0);
- ahd_restore_modes(ahd, saved_modes);
-}
-
-/************************* Input/Output Queues ********************************/
-/*
- * Flush and completed commands that are sitting in the command
- * complete queues down on the chip but have yet to be dma'ed back up.
- */
-void
-ahd_flush_qoutfifo(struct ahd_softc *ahd)
-{
- struct scb *scb;
- ahd_mode_state saved_modes;
- u_int saved_scbptr;
- u_int ccscbctl;
- u_int scbid;
- u_int next_scbid;
-
- saved_modes = ahd_save_modes(ahd);
- ahd_set_modes(ahd, AHD_MODE_CCHAN, AHD_MODE_CCHAN);
- saved_scbptr = ahd_get_scbptr(ahd);
-
- /*
- * Wait for any inprogress DMA to complete and clear DMA state
- * if this if for an SCB in the qinfifo.
- */
- while ((ccscbctl = ahd_inb(ahd, CCSCBCTL) & (CCARREN|CCSCBEN)) != 0) {
-
- if ((ccscbctl & (CCSCBDIR|CCARREN)) == (CCSCBDIR|CCARREN)) {
- if ((ccscbctl & ARRDONE) != 0)
- break;
- } else if ((ccscbctl & CCSCBDONE) != 0)
- break;
- ahd_delay(200);
- }
- if ((ccscbctl & CCSCBDIR) != 0)
- ahd_outb(ahd, CCSCBCTL, ccscbctl & ~(CCARREN|CCSCBEN));
-
- /*
- * Complete any SCBs that just finished being
- * DMA'ed into the qoutfifo.
- */
- ahd_run_qoutfifo(ahd);
-
- /*
- * Manually update/complete any completed SCBs that are waiting to be
- * DMA'ed back up to the host.
- */
- scbid = ahd_inw(ahd, COMPLETE_DMA_SCB_HEAD);
- while (!SCBID_IS_NULL(scbid)) {
- uint8_t *hscb_ptr;
- u_int i;
-
- ahd_set_scbptr(ahd, scbid);
- next_scbid = ahd_inw(ahd, SCB_NEXT_COMPLETE);
- scb = ahd_lookup_scb(ahd, scbid);
- if (scb == NULL) {
- printf("%s: Warning - DMA-up and complete "
- "SCB %d invalid\n", ahd_name(ahd), scbid);
- continue;
- }
- hscb_ptr = (uint8_t *)scb->hscb;
- for (i = 0; i < sizeof(struct hardware_scb); i++)
- *hscb_ptr++ = ahd_inb(ahd, SCB_BASE + i);
-
- ahd_complete_scb(ahd, scb);
- scbid = next_scbid;
- }
- ahd_outw(ahd, COMPLETE_DMA_SCB_HEAD, SCB_LIST_NULL);
-
- scbid = ahd_inw(ahd, COMPLETE_SCB_HEAD);
- while (!SCBID_IS_NULL(scbid)) {
-
- ahd_set_scbptr(ahd, scbid);
- next_scbid = ahd_inw(ahd, SCB_NEXT_COMPLETE);
- scb = ahd_lookup_scb(ahd, scbid);
- if (scb == NULL) {
- printf("%s: Warning - Complete SCB %d invalid\n",
- ahd_name(ahd), scbid);
- continue;
- }
-
- ahd_complete_scb(ahd, scb);
- scbid = next_scbid;
- }
- ahd_outw(ahd, COMPLETE_SCB_HEAD, SCB_LIST_NULL);
- ahd_set_scbptr(ahd, saved_scbptr);
-
- /*
- * Flush the good status FIFO for compelted packetized commands.
- */
- ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
- while ((ahd_inb(ahd, LQISTAT2) & LQIGSAVAIL) != 0) {
- scbid = (ahd_inb(ahd, GSFIFO+1) << 8)
- | ahd_inb(ahd, GSFIFO);
- scb = ahd_lookup_scb(ahd, scbid);
- if (scb == NULL) {
- printf("%s: Warning - GSFIFO SCB %d invalid\n",
- ahd_name(ahd), scbid);
- continue;
- }
- ahd_complete_scb(ahd, scb);
- }
-
- /*
- * Restore state.
- */
- ahd_restore_modes(ahd, saved_modes);
- ahd->flags |= AHD_UPDATE_PEND_CMDS;
-}
-
-void
-ahd_run_qoutfifo(struct ahd_softc *ahd)
-{
- struct scb *scb;
- u_int scb_index;
-
- if ((ahd->flags & AHD_RUNNING_QOUTFIFO) != 0)
- panic("ahd_run_qoutfifo recursion");
- ahd->flags |= AHD_RUNNING_QOUTFIFO;
- ahd_sync_qoutfifo(ahd, BUS_DMASYNC_POSTREAD);
- while ((ahd->qoutfifo[ahd->qoutfifonext]
- & QOUTFIFO_ENTRY_VALID_LE) == ahd->qoutfifonext_valid_tag) {
-
- scb_index = ahd_le16toh(ahd->qoutfifo[ahd->qoutfifonext]
- & ~QOUTFIFO_ENTRY_VALID_LE);
- scb = ahd_lookup_scb(ahd, scb_index);
- if (scb == NULL) {
- printf("%s: WARNING no command for scb %d "
- "(cmdcmplt)\nQOUTPOS = %d\n",
- ahd_name(ahd), scb_index,
- ahd->qoutfifonext);
- ahd_dump_card_state(ahd);
- } else
- ahd_complete_scb(ahd, scb);
-
- ahd->qoutfifonext = (ahd->qoutfifonext+1) & (AHD_QOUT_SIZE-1);
- if (ahd->qoutfifonext == 0)
- ahd->qoutfifonext_valid_tag ^= QOUTFIFO_ENTRY_VALID_LE;
- }
- ahd->flags &= ~AHD_RUNNING_QOUTFIFO;
-}
-
-/************************* Interrupt Handling *********************************/
-void
-ahd_handle_hwerrint(struct ahd_softc *ahd)
-{
- /*
- * Some catastrophic hardware error has occurred.
- * Print it for the user and disable the controller.
- */
- int i;
- int error;
-
- error = ahd_inb(ahd, ERROR);
- for (i = 0; i < num_errors; i++) {
- if ((error & ahd_hard_errors[i].errno) != 0)
- printf("%s: hwerrint, %s\n",
- ahd_name(ahd), ahd_hard_errors[i].errmesg);
- }
-
- ahd_dump_card_state(ahd);
- panic("BRKADRINT");
-
- /* Tell everyone that this HBA is no longer availible */
- ahd_abort_scbs(ahd, CAM_TARGET_WILDCARD, ALL_CHANNELS,
- CAM_LUN_WILDCARD, SCB_LIST_NULL, ROLE_UNKNOWN,
- CAM_NO_HBA);
-
- /* Tell the system that this controller has gone away. */
- ahd_free(ahd);
-}
-
-void
-ahd_handle_seqint(struct ahd_softc *ahd, u_int intstat)
-{
- u_int seqintcode;
-
- /*
- * Save the sequencer interrupt code and clear the SEQINT
- * bit. We will unpause the sequencer, if appropriate,
- * after servicing the request.
- */
- seqintcode = ahd_inb(ahd, SEQINTCODE);
- ahd_outb(ahd, CLRINT, CLRSEQINT);
- if ((ahd->bugs & AHD_INTCOLLISION_BUG) != 0) {
- /*
- * Unpause the sequencer and let it clear
- * SEQINT by writing NO_SEQINT to it. This
- * will cause the sequencer to be paused again,
- * which is the expected state of this routine.
- */
- ahd_unpause(ahd);
- while (!ahd_is_paused(ahd))
- ;
- ahd_outb(ahd, CLRINT, CLRSEQINT);
- }
- ahd_update_modes(ahd);
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MISC) != 0)
- printf("%s: Handle Seqint Called for code %d\n",
- ahd_name(ahd), seqintcode);
-#endif
- switch (seqintcode) {
- case ENTERING_NONPACK:
- {
- struct scb *scb;
- u_int scbid;
-
- AHD_ASSERT_MODES(ahd, ~(AHD_MODE_UNKNOWN_MSK|AHD_MODE_CFG_MSK),
- ~(AHD_MODE_UNKNOWN_MSK|AHD_MODE_CFG_MSK));
- scbid = ahd_get_scbptr(ahd);
- scb = ahd_lookup_scb(ahd, scbid);
- if (scb == NULL) {
- /*
- * Somehow need to know if this
- * is from a selection or reselection.
- * From that, we can termine target
- * ID so we at least have an I_T nexus.
- */
- } else {
- ahd_outb(ahd, SAVED_SCSIID, scb->hscb->scsiid);
- ahd_outb(ahd, SAVED_LUN, scb->hscb->lun);
- ahd_outb(ahd, SEQ_FLAGS, 0x0);
- }
- if ((ahd_inb(ahd, LQISTAT2) & LQIPHASE_OUTPKT) != 0
- && (ahd_inb(ahd, SCSISIGO) & ATNO) != 0) {
- /*
- * Phase change after read stream with
- * CRC error with P0 asserted on last
- * packet.
- */
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_RECOVERY) != 0)
- printf("%s: Assuming LQIPHASE_NLQ with "
- "P0 assertion\n", ahd_name(ahd));
-#endif
- }
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_RECOVERY) != 0)
- printf("%s: Entering NONPACK\n", ahd_name(ahd));
-#endif
- break;
- }
- case INVALID_SEQINT:
- printf("%s: Invalid Sequencer interrupt occurred.\n",
- ahd_name(ahd));
- ahd_dump_card_state(ahd);
- ahd_reset_channel(ahd, 'A', /*Initiate Reset*/TRUE);
- break;
- case STATUS_OVERRUN:
- {
- printf("%s: Status Overrun", ahd_name(ahd));
- ahd_dump_card_state(ahd);
- ahd_reset_channel(ahd, 'A', /*Initiate Reset*/TRUE);
- break;
- }
- case CFG4ISTAT_INTR:
- {
- struct scb *scb;
- u_int scbid;
-
- scbid = ahd_get_scbptr(ahd);
- scb = ahd_lookup_scb(ahd, scbid);
- if (scb == NULL) {
- ahd_dump_card_state(ahd);
- printf("CFG4ISTAT: Free SCB %d referenced", scbid);
- panic("For safety");
- }
- ahd_outq(ahd, HADDR, scb->sense_busaddr);
- ahd_outw(ahd, HCNT, AHD_SENSE_BUFSIZE);
- ahd_outb(ahd, HCNT + 2, 0);
- ahd_outb(ahd, SG_CACHE_PRE, SG_LAST_SEG);
- ahd_outb(ahd, DFCNTRL, PRELOADEN|SCSIEN|HDMAEN);
- break;
- }
- case ILLEGAL_PHASE:
- {
- u_int bus_phase;
-
- bus_phase = ahd_inb(ahd, SCSISIGI) & PHASE_MASK;
- printf("%s: ILLEGAL_PHASE 0x%x\n",
- ahd_name(ahd), bus_phase);
-
- switch (bus_phase) {
- case P_DATAOUT:
- case P_DATAIN:
- case P_DATAOUT_DT:
- case P_DATAIN_DT:
- case P_MESGOUT:
- case P_STATUS:
- case P_MESGIN:
- ahd_reset_channel(ahd, 'A', /*Initiate Reset*/TRUE);
- printf("%s: Issued Bus Reset.\n", ahd_name(ahd));
- break;
- case P_COMMAND:
- {
- struct ahd_devinfo devinfo;
- struct scb *scb;
- struct ahd_initiator_tinfo *targ_info;
- struct ahd_tmode_tstate *tstate;
- struct ahd_transinfo *tinfo;
- u_int scbid;
-
- /*
- * If a target takes us into the command phase
- * assume that it has been externally reset and
- * has thus lost our previous packetized negotiation
- * agreement. Since we have not sent an identify
- * message and may not have fully qualified the
- * connection, we change our command to TUR, assert
- * ATN and ABORT the task when we go to message in
- * phase. The OSM will see the REQUEUE_REQUEST
- * status and retry the command.
- */
- scbid = ahd_get_scbptr(ahd);
- scb = ahd_lookup_scb(ahd, scbid);
- if (scb == NULL) {
- printf("Invalid phase with no valid SCB. "
- "Resetting bus.\n");
- ahd_reset_channel(ahd, 'A',
- /*Initiate Reset*/TRUE);
- break;
- }
- ahd_compile_devinfo(&devinfo, SCB_GET_OUR_ID(scb),
- SCB_GET_TARGET(ahd, scb),
- SCB_GET_LUN(scb),
- SCB_GET_CHANNEL(ahd, scb),
- ROLE_INITIATOR);
- targ_info = ahd_fetch_transinfo(ahd,
- devinfo.channel,
- devinfo.our_scsiid,
- devinfo.target,
- &tstate);
- tinfo = &targ_info->curr;
- ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
- AHD_TRANS_ACTIVE, /*paused*/TRUE);
- ahd_set_syncrate(ahd, &devinfo, /*period*/0,
- /*offset*/0, /*ppr_options*/0,
- AHD_TRANS_ACTIVE, /*paused*/TRUE);
- ahd_outb(ahd, SCB_CDB_STORE, 0);
- ahd_outb(ahd, SCB_CDB_STORE+1, 0);
- ahd_outb(ahd, SCB_CDB_STORE+2, 0);
- ahd_outb(ahd, SCB_CDB_STORE+3, 0);
- ahd_outb(ahd, SCB_CDB_STORE+4, 0);
- ahd_outb(ahd, SCB_CDB_STORE+5, 0);
- ahd_outb(ahd, SCB_CDB_LEN, 6);
- scb->hscb->control &= ~(TAG_ENB|SCB_TAG_TYPE);
- scb->hscb->control |= MK_MESSAGE;
- ahd_outb(ahd, SCB_CONTROL, scb->hscb->control);
- ahd_outb(ahd, MSG_OUT, HOST_MSG);
- ahd_outb(ahd, SAVED_SCSIID, scb->hscb->scsiid);
- /*
- * The lun is 0, regardless of the SCB's lun
- * as we have not sent an identify message.
- */
- ahd_outb(ahd, SAVED_LUN, 0);
- ahd_outb(ahd, SEQ_FLAGS, 0);
- ahd_assert_atn(ahd);
- scb->flags &= ~(SCB_PACKETIZED);
- scb->flags |= SCB_ABORT|SCB_CMDPHASE_ABORT;
- ahd_freeze_devq(ahd, scb);
- ahd_set_transaction_status(scb, CAM_REQUEUE_REQ);
- ahd_freeze_scb(scb);
-
- /*
- * Allow the sequencer to continue with
- * non-pack processing.
- */
- ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
- ahd_outb(ahd, CLRLQOINT1, CLRLQOPHACHGINPKT);
- if ((ahd->bugs & AHD_CLRLQO_AUTOCLR_BUG) != 0) {
- ahd_outb(ahd, CLRLQOINT1, 0);
- }
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_RECOVERY) != 0) {
- ahd_print_path(ahd, scb);
- printf("Unexpected command phase from "
- "packetized target\n");
- }
-#endif
- break;
- }
- }
- break;
- }
- case CFG4OVERRUN:
- {
- struct scb *scb;
- u_int scb_index;
-
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_RECOVERY) != 0) {
- printf("%s: CFG4OVERRUN mode = %x\n", ahd_name(ahd),
- ahd_inb(ahd, MODE_PTR));
- }
-#endif
- scb_index = ahd_get_scbptr(ahd);
- scb = ahd_lookup_scb(ahd, scb_index);
- if (scb == NULL) {
- /*
- * Attempt to transfer to an SCB that is
- * not outstanding.
- */
- ahd_assert_atn(ahd);
- ahd_outb(ahd, MSG_OUT, HOST_MSG);
- ahd->msgout_buf[0] = MSG_ABORT_TASK;
- ahd->msgout_len = 1;
- ahd->msgout_index = 0;
- ahd->msg_type = MSG_TYPE_INITIATOR_MSGOUT;
- /*
- * Clear status received flag to prevent any
- * attempt to complete this bogus SCB.
- */
- ahd_outb(ahd, SCB_CONTROL,
- ahd_inb(ahd, SCB_CONTROL) & ~STATUS_RCVD);
- }
- break;
- }
- case DUMP_CARD_STATE:
- {
- ahd_dump_card_state(ahd);
- break;
- }
- case PDATA_REINIT:
- {
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_RECOVERY) != 0) {
- printf("%s: PDATA_REINIT - DFCNTRL = 0x%x "
- "SG_CACHE_SHADOW = 0x%x\n",
- ahd_name(ahd), ahd_inb(ahd, DFCNTRL),
- ahd_inb(ahd, SG_CACHE_SHADOW));
- }
-#endif
- ahd_reinitialize_dataptrs(ahd);
- break;
- }
- case HOST_MSG_LOOP:
- {
- struct ahd_devinfo devinfo;
-
- /*
- * The sequencer has encountered a message phase
- * that requires host assistance for completion.
- * While handling the message phase(s), we will be
- * notified by the sequencer after each byte is
- * transfered so we can track bus phase changes.
- *
- * If this is the first time we've seen a HOST_MSG_LOOP
- * interrupt, initialize the state of the host message
- * loop.
- */
- ahd_fetch_devinfo(ahd, &devinfo);
- if (ahd->msg_type == MSG_TYPE_NONE) {
- struct scb *scb;
- u_int scb_index;
- u_int bus_phase;
-
- bus_phase = ahd_inb(ahd, SCSISIGI) & PHASE_MASK;
- if (bus_phase != P_MESGIN
- && bus_phase != P_MESGOUT) {
- printf("ahd_intr: HOST_MSG_LOOP bad "
- "phase 0x%x\n", bus_phase);
- /*
- * Probably transitioned to bus free before
- * we got here. Just punt the message.
- */
- ahd_dump_card_state(ahd);
- ahd_clear_intstat(ahd);
- ahd_restart(ahd);
- return;
- }
-
- scb_index = ahd_get_scbptr(ahd);
- scb = ahd_lookup_scb(ahd, scb_index);
- if (devinfo.role == ROLE_INITIATOR) {
- if (bus_phase == P_MESGOUT)
- ahd_setup_initiator_msgout(ahd,
- &devinfo,
- scb);
- else {
- ahd->msg_type =
- MSG_TYPE_INITIATOR_MSGIN;
- ahd->msgin_index = 0;
- }
- }
-#if AHD_TARGET_MODE
- else {
- if (bus_phase == P_MESGOUT) {
- ahd->msg_type =
- MSG_TYPE_TARGET_MSGOUT;
- ahd->msgin_index = 0;
- }
- else
- ahd_setup_target_msgin(ahd,
- &devinfo,
- scb);
- }
-#endif
- }
-
- ahd_handle_message_phase(ahd);
- break;
- }
- case NO_MATCH:
- {
- /* Ensure we don't leave the selection hardware on */
- AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK);
- ahd_outb(ahd, SCSISEQ0, ahd_inb(ahd, SCSISEQ0) & ~ENSELO);
-
- printf("%s:%c:%d: no active SCB for reconnecting "
- "target - issuing BUS DEVICE RESET\n",
- ahd_name(ahd), 'A', ahd_inb(ahd, SELID) >> 4);
- printf("SAVED_SCSIID == 0x%x, SAVED_LUN == 0x%x, "
- "REG0 == 0x%x ACCUM = 0x%x\n",
- ahd_inb(ahd, SAVED_SCSIID), ahd_inb(ahd, SAVED_LUN),
- ahd_inw(ahd, REG0), ahd_inb(ahd, ACCUM));
- printf("SEQ_FLAGS == 0x%x, SCBPTR == 0x%x, BTT == 0x%x, "
- "SINDEX == 0x%x\n",
- ahd_inb(ahd, SEQ_FLAGS), ahd_get_scbptr(ahd),
- ahd_find_busy_tcl(ahd,
- BUILD_TCL(ahd_inb(ahd, SAVED_SCSIID),
- ahd_inb(ahd, SAVED_LUN))),
- ahd_inw(ahd, SINDEX));
- printf("SELID == 0x%x, SCB_SCSIID == 0x%x, SCB_LUN == 0x%x, "
- "SCB_CONTROL == 0x%x\n",
- ahd_inb(ahd, SELID), ahd_inb_scbram(ahd, SCB_SCSIID),
- ahd_inb_scbram(ahd, SCB_LUN),
- ahd_inb_scbram(ahd, SCB_CONTROL));
- printf("SCSIBUS[0] == 0x%x, SCSISIGI == 0x%x\n",
- ahd_inb(ahd, SCSIBUS), ahd_inb(ahd, SCSISIGI));
- printf("SXFRCTL0 == 0x%x\n", ahd_inb(ahd, SXFRCTL0));
- printf("SEQCTL0 == 0x%x\n", ahd_inb(ahd, SEQCTL0));
- ahd_dump_card_state(ahd);
- ahd->msgout_buf[0] = MSG_BUS_DEV_RESET;
- ahd->msgout_len = 1;
- ahd->msgout_index = 0;
- ahd->msg_type = MSG_TYPE_INITIATOR_MSGOUT;
- ahd_outb(ahd, MSG_OUT, HOST_MSG);
- ahd_assert_atn(ahd);
- break;
- }
- case PROTO_VIOLATION:
- {
- ahd_handle_proto_violation(ahd);
- break;
- }
- case IGN_WIDE_RES:
- {
- struct ahd_devinfo devinfo;
-
- ahd_fetch_devinfo(ahd, &devinfo);
- ahd_handle_ign_wide_residue(ahd, &devinfo);
- break;
- }
- case BAD_PHASE:
- {
- u_int lastphase;
-
- lastphase = ahd_inb(ahd, LASTPHASE);
- printf("%s:%c:%d: unknown scsi bus phase %x, "
- "lastphase = 0x%x. Attempting to continue\n",
- ahd_name(ahd), 'A',
- SCSIID_TARGET(ahd, ahd_inb(ahd, SAVED_SCSIID)),
- lastphase, ahd_inb(ahd, SCSISIGI));
- break;
- }
- case MISSED_BUSFREE:
- {
- u_int lastphase;
-
- lastphase = ahd_inb(ahd, LASTPHASE);
- printf("%s:%c:%d: Missed busfree. "
- "Lastphase = 0x%x, Curphase = 0x%x\n",
- ahd_name(ahd), 'A',
- SCSIID_TARGET(ahd, ahd_inb(ahd, SAVED_SCSIID)),
- lastphase, ahd_inb(ahd, SCSISIGI));
- ahd_restart(ahd);
- return;
- }
- case DATA_OVERRUN:
- {
- /*
- * When the sequencer detects an overrun, it
- * places the controller in "BITBUCKET" mode
- * and allows the target to complete its transfer.
- * Unfortunately, none of the counters get updated
- * when the controller is in this mode, so we have
- * no way of knowing how large the overrun was.
- */
- struct scb *scb;
- u_int scbindex;
-#ifdef AHD_DEBUG
- u_int lastphase;
-#endif
-
- scbindex = ahd_get_scbptr(ahd);
- scb = ahd_lookup_scb(ahd, scbindex);
-#ifdef AHD_DEBUG
- lastphase = ahd_inb(ahd, LASTPHASE);
- if ((ahd_debug & AHD_SHOW_RECOVERY) != 0) {
- ahd_print_path(ahd, scb);
- printf("data overrun detected %s. Tag == 0x%x.\n",
- ahd_lookup_phase_entry(lastphase)->phasemsg,
- SCB_GET_TAG(scb));
- ahd_print_path(ahd, scb);
- printf("%s seen Data Phase. Length = %ld. "
- "NumSGs = %d.\n",
- ahd_inb(ahd, SEQ_FLAGS) & DPHASE
- ? "Have" : "Haven't",
- ahd_get_transfer_length(scb), scb->sg_count);
- ahd_dump_sglist(scb);
- }
-#endif
-
- /*
- * Set this and it will take effect when the
- * target does a command complete.
- */
- ahd_freeze_devq(ahd, scb);
- ahd_set_transaction_status(scb, CAM_DATA_RUN_ERR);
- ahd_freeze_scb(scb);
- break;
- }
- case MKMSG_FAILED:
- {
- struct ahd_devinfo devinfo;
- struct scb *scb;
- u_int scbid;
-
- ahd_fetch_devinfo(ahd, &devinfo);
- printf("%s:%c:%d:%d: Attempt to issue message failed\n",
- ahd_name(ahd), devinfo.channel, devinfo.target,
- devinfo.lun);
- scbid = ahd_get_scbptr(ahd);
- scb = ahd_lookup_scb(ahd, scbid);
- if (scb != NULL
- && (scb->flags & SCB_RECOVERY_SCB) != 0)
- /*
- * Ensure that we didn't put a second instance of this
- * SCB into the QINFIFO.
- */
- ahd_search_qinfifo(ahd, SCB_GET_TARGET(ahd, scb),
- SCB_GET_CHANNEL(ahd, scb),
- SCB_GET_LUN(scb), SCB_GET_TAG(scb),
- ROLE_INITIATOR, /*status*/0,
- SEARCH_REMOVE);
- ahd_outb(ahd, SCB_CONTROL,
- ahd_inb(ahd, SCB_CONTROL) & ~MK_MESSAGE);
- break;
- }
- case TASKMGMT_FUNC_COMPLETE:
- {
- u_int scbid;
- struct scb *scb;
-
- scbid = ahd_get_scbptr(ahd);
- scb = ahd_lookup_scb(ahd, scbid);
- if (scb != NULL) {
- u_int lun;
- u_int tag;
- cam_status error;
-
- ahd_print_path(ahd, scb);
- printf("Task Management Func 0x%x Complete\n",
- scb->hscb->task_management);
- lun = CAM_LUN_WILDCARD;
- tag = SCB_LIST_NULL;
-
- switch (scb->hscb->task_management) {
- case SIU_TASKMGMT_ABORT_TASK:
- tag = scb->hscb->tag;
- case SIU_TASKMGMT_ABORT_TASK_SET:
- case SIU_TASKMGMT_CLEAR_TASK_SET:
- lun = scb->hscb->lun;
- error = CAM_REQ_ABORTED;
- ahd_abort_scbs(ahd, SCB_GET_TARGET(ahd, scb),
- 'A', lun, tag, ROLE_INITIATOR,
- error);
- break;
- case SIU_TASKMGMT_LUN_RESET:
- lun = scb->hscb->lun;
- case SIU_TASKMGMT_TARGET_RESET:
- {
- struct ahd_devinfo devinfo;
-
- ahd_scb_devinfo(ahd, &devinfo, scb);
- error = CAM_BDR_SENT;
- ahd_handle_devreset(ahd, &devinfo, lun,
- CAM_BDR_SENT,
- lun != CAM_LUN_WILDCARD
- ? "Lun Reset"
- : "Target Reset",
- /*verbose_level*/0);
- break;
- }
- default:
- panic("Unexpected TaskMgmt Func\n");
- break;
- }
- }
- break;
- }
- case TASKMGMT_CMD_CMPLT_OKAY:
- {
- u_int scbid;
- struct scb *scb;
-
- /*
- * An ABORT TASK TMF failed to be delivered before
- * the targeted command completed normally.
- */
- scbid = ahd_get_scbptr(ahd);
- scb = ahd_lookup_scb(ahd, scbid);
- if (scb != NULL) {
- /*
- * Remove the second instance of this SCB from
- * the QINFIFO if it is still there.
- */
- ahd_print_path(ahd, scb);
- printf("SCB completes before TMF\n");
- /*
- * Handle losing the race. Wait until any
- * current selection completes. We will then
- * set the TMF back to zero in this SCB so that
- * the sequencer doesn't bother to issue another
- * sequencer interrupt for its completion.
- */
- while ((ahd_inb(ahd, SCSISEQ0) & ENSELO) != 0
- && (ahd_inb(ahd, SSTAT0) & SELDO) == 0
- && (ahd_inb(ahd, SSTAT1) & SELTO) == 0)
- ;
- ahd_outb(ahd, SCB_TASK_MANAGEMENT, 0);
- ahd_search_qinfifo(ahd, SCB_GET_TARGET(ahd, scb),
- SCB_GET_CHANNEL(ahd, scb),
- SCB_GET_LUN(scb), scb->hscb->tag,
- ROLE_INITIATOR, /*status*/0,
- SEARCH_REMOVE);
- }
- break;
- }
- case TRACEPOINT0:
- case TRACEPOINT1:
- case TRACEPOINT2:
- case TRACEPOINT3:
- printf("%s: Tracepoint %d\n", ahd_name(ahd),
- seqintcode - TRACEPOINT0);
- break;
- case NO_SEQINT:
- break;
- case SAW_HWERR:
- ahd_handle_hwerrint(ahd);
- break;
- default:
- printf("%s: Unexpected SEQINTCODE %d\n", ahd_name(ahd),
- seqintcode);
- break;
- }
- /*
- * The sequencer is paused immediately on
- * a SEQINT, so we should restart it when
- * we're done.
- */
- ahd_unpause(ahd);
-}
-
-void
-ahd_handle_scsiint(struct ahd_softc *ahd, u_int intstat)
-{
- struct scb *scb;
- u_int status0;
- u_int status3;
- u_int status;
- u_int lqistat1;
- u_int lqostat0;
- u_int scbid;
- u_int busfreetime;
-
- ahd_update_modes(ahd);
- ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
-
- status3 = ahd_inb(ahd, SSTAT3) & (NTRAMPERR|OSRAMPERR);
- status0 = ahd_inb(ahd, SSTAT0) & (IOERR|OVERRUN|SELDI|SELDO);
- status = ahd_inb(ahd, SSTAT1) & (SELTO|SCSIRSTI|BUSFREE|SCSIPERR);
- lqistat1 = ahd_inb(ahd, LQISTAT1);
- lqostat0 = ahd_inb(ahd, LQOSTAT0);
- busfreetime = ahd_inb(ahd, SSTAT2) & BUSFREETIME;
- if ((status0 & (SELDI|SELDO)) != 0) {
- u_int simode0;
-
- ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG);
- simode0 = ahd_inb(ahd, SIMODE0);
- status0 &= simode0 & (IOERR|OVERRUN|SELDI|SELDO);
- ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
- }
- scbid = ahd_get_scbptr(ahd);
- scb = ahd_lookup_scb(ahd, scbid);
- if (scb != NULL
- && (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) != 0)
- scb = NULL;
-
- /* Make sure the sequencer is in a safe location. */
- ahd_clear_critical_section(ahd);
-
- if ((status0 & IOERR) != 0) {
- u_int now_lvd;
-
- now_lvd = ahd_inb(ahd, SBLKCTL) & ENAB40;
- printf("%s: Transceiver State Has Changed to %s mode\n",
- ahd_name(ahd), now_lvd ? "LVD" : "SE");
- ahd_outb(ahd, CLRSINT0, CLRIOERR);
- /*
- * A change in I/O mode is equivalent to a bus reset.
- */
- ahd_reset_channel(ahd, 'A', /*Initiate Reset*/FALSE);
- ahd_pause(ahd);
- ahd_setup_iocell_workaround(ahd);
- ahd_unpause(ahd);
- } else if ((status0 & OVERRUN) != 0) {
- printf("%s: SCSI offset overrun detected. Resetting bus.\n",
- ahd_name(ahd));
- ahd_reset_channel(ahd, 'A', /*Initiate Reset*/TRUE);
- } else if ((status & SCSIRSTI) != 0) {
- printf("%s: Someone reset channel A\n", ahd_name(ahd));
- ahd_reset_channel(ahd, 'A', /*Initiate Reset*/FALSE);
- } else if ((status & SCSIPERR) != 0) {
- ahd_handle_transmission_error(ahd);
- } else if (lqostat0 != 0) {
- printf("%s: lqostat0 == 0x%x!\n", ahd_name(ahd), lqostat0);
- ahd_outb(ahd, CLRLQOINT0, lqostat0);
- if ((ahd->bugs & AHD_CLRLQO_AUTOCLR_BUG) != 0) {
- ahd_outb(ahd, CLRLQOINT1, 0);
- }
- } else if ((status & SELTO) != 0) {
- u_int scbid;
-
- /* Stop the selection */
- ahd_outb(ahd, SCSISEQ0, 0);
-
- /* No more pending messages */
- ahd_clear_msg_state(ahd);
-
- /* Clear interrupt state */
- ahd_outb(ahd, CLRSINT1, CLRSELTIMEO|CLRBUSFREE|CLRSCSIPERR);
-
- /*
- * Although the driver does not care about the
- * 'Selection in Progress' status bit, the busy
- * LED does. SELINGO is only cleared by a sucessfull
- * selection, so we must manually clear it to insure
- * the LED turns off just incase no future successful
- * selections occur (e.g. no devices on the bus).
- */
- ahd_outb(ahd, CLRSINT0, CLRSELINGO);
-
- scbid = ahd_inw(ahd, WAITING_TID_HEAD);
- scb = ahd_lookup_scb(ahd, scbid);
- if (scb == NULL) {
- printf("%s: ahd_intr - referenced scb not "
- "valid during SELTO scb(0x%x)\n",
- ahd_name(ahd), scbid);
- ahd_dump_card_state(ahd);
- } else {
- struct ahd_devinfo devinfo;
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_SELTO) != 0) {
- ahd_print_path(ahd, scb);
- printf("Saw Selection Timeout for SCB 0x%x\n",
- scbid);
- }
-#endif
- /*
- * Force a renegotiation with this target just in
- * case the cable was pulled and will later be
- * re-attached. The target may forget its negotiation
- * settings with us should it attempt to reselect
- * during the interruption. The target will not issue
- * a unit attention in this case, so we must always
- * renegotiate.
- */
- ahd_scb_devinfo(ahd, &devinfo, scb);
- ahd_force_renegotiation(ahd, &devinfo);
- ahd_set_transaction_status(scb, CAM_SEL_TIMEOUT);
- ahd_freeze_devq(ahd, scb);
- }
- ahd_outb(ahd, CLRINT, CLRSCSIINT);
- ahd_iocell_first_selection(ahd);
- ahd_unpause(ahd);
- } else if ((status0 & (SELDI|SELDO)) != 0) {
- ahd_iocell_first_selection(ahd);
- ahd_unpause(ahd);
- } else if (status3 != 0) {
- printf("%s: SCSI Cell parity error SSTAT3 == 0x%x\n",
- ahd_name(ahd), status3);
- ahd_outb(ahd, CLRSINT3, status3);
- } else if ((lqistat1 & (LQIPHASE_LQ|LQIPHASE_NLQ)) != 0) {
- ahd_handle_lqiphase_error(ahd, lqistat1);
- } else if ((status & BUSFREE) != 0) {
- u_int lqostat1;
- int restart;
- int clear_fifo;
- int packetized;
- u_int mode;
-
- /*
- * Clear our selection hardware as soon as possible.
- * We may have an entry in the waiting Q for this target,
- * that is affected by this busfree and we don't want to
- * go about selecting the target while we handle the event.
- */
- ahd_outb(ahd, SCSISEQ0, 0);
-
- /*
- * Determine what we were up to at the time of
- * the busfree.
- */
- mode = AHD_MODE_SCSI;
- busfreetime = ahd_inb(ahd, SSTAT2) & BUSFREETIME;
- lqostat1 = ahd_inb(ahd, LQOSTAT1);
- switch (busfreetime) {
- case BUSFREE_DFF0:
- case BUSFREE_DFF1:
- {
- u_int scbid;
- struct scb *scb;
-
- mode = busfreetime == BUSFREE_DFF0
- ? AHD_MODE_DFF0 : AHD_MODE_DFF1;
- ahd_set_modes(ahd, mode, mode);
- scbid = ahd_get_scbptr(ahd);
- scb = ahd_lookup_scb(ahd, scbid);
- if (scb == NULL) {
- printf("%s: Invalid SCB in DFF%d "
- "during unexpected busfree\n",
- ahd_name(ahd), mode);
- packetized = 0;
- } else
- packetized = (scb->flags & SCB_PACKETIZED) != 0;
- clear_fifo = 1;
- break;
- }
- case BUSFREE_LQO:
- clear_fifo = 0;
- packetized = 1;
- break;
- default:
- clear_fifo = 0;
- packetized = (lqostat1 & LQOBUSFREE) != 0;
- if (!packetized
- && ahd_inb(ahd, LASTPHASE) == P_BUSFREE)
- packetized = 1;
- break;
- }
-
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MISC) != 0)
- printf("Saw Busfree. Busfreetime = 0x%x.\n",
- busfreetime);
-#endif
- /*
- * Busfrees that occur in non-packetized phases are
- * handled by the nonpkt_busfree handler.
- */
- if (packetized && ahd_inb(ahd, LASTPHASE) == P_BUSFREE) {
- restart = ahd_handle_pkt_busfree(ahd, busfreetime);
- } else {
- packetized = 0;
- restart = ahd_handle_nonpkt_busfree(ahd);
- }
- /*
- * Clear the busfree interrupt status. The setting of
- * the interrupt is a pulse, so in a perfect world, we
- * would not need to muck with the ENBUSFREE logic. This
- * would ensure that if the bus moves on to another
- * connection, busfree protection is still in force. If
- * BUSFREEREV is broken, however, we must manually clear
- * the ENBUSFREE if the busfree occurred during a non-pack
- * connection so that we don't get false positives during
- * future, packetized, connections.
- */
- ahd_outb(ahd, CLRSINT1, CLRBUSFREE);
- if (packetized == 0
- && (ahd->bugs & AHD_BUSFREEREV_BUG) != 0)
- ahd_outb(ahd, SIMODE1,
- ahd_inb(ahd, SIMODE1) & ~ENBUSFREE);
-
- if (clear_fifo)
- ahd_clear_fifo(ahd, mode);
-
- ahd_clear_msg_state(ahd);
- ahd_outb(ahd, CLRINT, CLRSCSIINT);
- if (restart) {
- ahd_restart(ahd);
- } else {
- ahd_unpause(ahd);
- }
- } else {
- printf("%s: Missing case in ahd_handle_scsiint. status = %x\n",
- ahd_name(ahd), status);
- ahd_dump_card_state(ahd);
- ahd_clear_intstat(ahd);
- ahd_unpause(ahd);
- }
-}
-
-static void
-ahd_handle_transmission_error(struct ahd_softc *ahd)
-{
- struct scb *scb;
- u_int scbid;
- u_int lqistat1;
- u_int lqistat2;
- u_int msg_out;
- u_int curphase;
- u_int lastphase;
- u_int perrdiag;
- u_int cur_col;
- int silent;
-
- scb = NULL;
- ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
- lqistat1 = ahd_inb(ahd, LQISTAT1) & ~(LQIPHASE_LQ|LQIPHASE_NLQ);
- lqistat2 = ahd_inb(ahd, LQISTAT2);
- if ((lqistat1 & (LQICRCI_NLQ|LQICRCI_LQ)) == 0
- && (ahd->bugs & AHD_NLQICRC_DELAYED_BUG) != 0) {
- u_int lqistate;
-
- ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG);
- lqistate = ahd_inb(ahd, LQISTATE);
- if ((lqistate >= 0x1E && lqistate <= 0x24)
- || (lqistate == 0x29)) {
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_RECOVERY) != 0) {
- printf("%s: NLQCRC found via LQISTATE\n",
- ahd_name(ahd));
- }
-#endif
- lqistat1 |= LQICRCI_NLQ;
- }
- ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
- }
-
- ahd_outb(ahd, CLRLQIINT1, lqistat1);
- lastphase = ahd_inb(ahd, LASTPHASE);
- curphase = ahd_inb(ahd, SCSISIGI) & PHASE_MASK;
- perrdiag = ahd_inb(ahd, PERRDIAG);
- msg_out = MSG_INITIATOR_DET_ERR;
- ahd_outb(ahd, CLRSINT1, CLRSCSIPERR);
-
- /*
- * Try to find the SCB associated with this error.
- */
- silent = FALSE;
- if (lqistat1 == 0
- || (lqistat1 & LQICRCI_NLQ) != 0) {
- if ((lqistat1 & (LQICRCI_NLQ|LQIOVERI_NLQ)) != 0)
- ahd_set_active_fifo(ahd);
- scbid = ahd_get_scbptr(ahd);
- scb = ahd_lookup_scb(ahd, scbid);
- if (scb != NULL && SCB_IS_SILENT(scb))
- silent = TRUE;
- }
-
- cur_col = 0;
- if (silent == FALSE) {
- printf("%s: Transmission error detected\n", ahd_name(ahd));
- ahd_lqistat1_print(lqistat1, &cur_col, 50);
- ahd_lastphase_print(lastphase, &cur_col, 50);
- ahd_scsisigi_print(curphase, &cur_col, 50);
- ahd_perrdiag_print(perrdiag, &cur_col, 50);
- printf("\n");
- ahd_dump_card_state(ahd);
- }
-
- if ((lqistat1 & (LQIOVERI_LQ|LQIOVERI_NLQ)) != 0) {
- if (silent == FALSE) {
- printf("%s: Gross protocol error during incoming "
- "packet. lqistat1 == 0x%x. Resetting bus.\n",
- ahd_name(ahd), lqistat1);
- }
- ahd_reset_channel(ahd, 'A', /*Initiate Reset*/TRUE);
- return;
- } else if ((lqistat1 & LQICRCI_LQ) != 0) {
- /*
- * A CRC error has been detected on an incoming LQ.
- * The bus is currently hung on the last ACK.
- * Hit LQIRETRY to release the last ack, and
- * wait for the sequencer to determine that ATNO
- * is asserted while in message out to take us
- * to our host message loop. No NONPACKREQ or
- * LQIPHASE type errors will occur in this
- * scenario. After this first LQIRETRY, the LQI
- * manager will be in ISELO where it will
- * happily sit until another packet phase begins.
- * Unexpected bus free detection is enabled
- * through any phases that occur after we release
- * this last ack until the LQI manager sees a
- * packet phase. This implies we may have to
- * ignore a perfectly valid "unexected busfree"
- * after our "initiator detected error" message is
- * sent. A busfree is the expected response after
- * we tell the target that it's L_Q was corrupted.
- * (SPI4R09 10.7.3.3.3)
- */
- ahd_outb(ahd, LQCTL2, LQIRETRY);
- printf("LQIRetry for LQICRCI_LQ to release ACK\n");
- } else if ((lqistat1 & LQICRCI_NLQ) != 0) {
- /*
- * We detected a CRC error in a NON-LQ packet.
- * The hardware has varying behavior in this situation
- * depending on whether this packet was part of a
- * stream or not.
- *
- * PKT by PKT mode:
- * The hardware has already acked the complete packet.
- * If the target honors our outstanding ATN condition,
- * we should be (or soon will be) in MSGOUT phase.
- * This will trigger the LQIPHASE_LQ status bit as the
- * hardware was expecting another LQ. Unexpected
- * busfree detection is enabled. Once LQIPHASE_LQ is
- * true (first entry into host message loop is much
- * the same), we must clear LQIPHASE_LQ and hit
- * LQIRETRY so the hardware is ready to handle
- * a future LQ. NONPACKREQ will not be asserted again
- * once we hit LQIRETRY until another packet is
- * processed. The target may either go busfree
- * or start another packet in response to our message.
- *
- * Read Streaming P0 asserted:
- * If we raise ATN and the target completes the entire
- * stream (P0 asserted during the last packet), the
- * hardware will ack all data and return to the ISTART
- * state. When the target reponds to our ATN condition,
- * LQIPHASE_LQ will be asserted. We should respond to
- * this with an LQIRETRY to prepare for any future
- * packets. NONPACKREQ will not be asserted again
- * once we hit LQIRETRY until another packet is
- * processed. The target may either go busfree or
- * start another packet in response to our message.
- * Busfree detection is enabled.
- *
- * Read Streaming P0 not asserted:
- * If we raise ATN and the target transitions to
- * MSGOUT in or after a packet where P0 is not
- * asserted, the hardware will assert LQIPHASE_NLQ.
- * We should respond to the LQIPHASE_NLQ with an
- * LQIRETRY. Should the target stay in a non-pkt
- * phase after we send our message, the hardware
- * will assert LQIPHASE_LQ. Recovery is then just as
- * listed above for the read streaming with P0 asserted.
- * Busfree detection is enabled.
- */
- if (silent == FALSE)
- printf("LQICRC_NLQ\n");
- if (scb == NULL) {
- printf("%s: No SCB valid for LQICRC_NLQ. "
- "Resetting bus\n", ahd_name(ahd));
- ahd_reset_channel(ahd, 'A', /*Initiate Reset*/TRUE);
- return;
- }
- } else if ((lqistat1 & LQIBADLQI) != 0) {
- printf("Need to handle BADLQI!\n");
- ahd_reset_channel(ahd, 'A', /*Initiate Reset*/TRUE);
- return;
- } else if ((perrdiag & (PARITYERR|PREVPHASE)) == PARITYERR) {
- if ((curphase & ~P_DATAIN_DT) != 0) {
- /* Ack the byte. So we can continue. */
- if (silent == FALSE)
- printf("Acking %s to clear perror\n",
- ahd_lookup_phase_entry(curphase)->phasemsg);
- ahd_inb(ahd, SCSIDAT);
- }
-
- if (curphase == P_MESGIN)
- msg_out = MSG_PARITY_ERROR;
- }
-
- /*
- * We've set the hardware to assert ATN if we
- * get a parity error on "in" phases, so all we
- * need to do is stuff the message buffer with
- * the appropriate message. "In" phases have set
- * mesg_out to something other than MSG_NOP.
- */
- ahd->send_msg_perror = msg_out;
- if (scb != NULL && msg_out == MSG_INITIATOR_DET_ERR)
- scb->flags |= SCB_TRANSMISSION_ERROR;
- ahd_outb(ahd, MSG_OUT, HOST_MSG);
- ahd_outb(ahd, CLRINT, CLRSCSIINT);
- ahd_unpause(ahd);
-}
-
-static void
-ahd_handle_lqiphase_error(struct ahd_softc *ahd, u_int lqistat1)
-{
- /*
- * Clear the sources of the interrupts.
- */
- ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
- ahd_outb(ahd, CLRLQIINT1, lqistat1);
-
- /*
- * If the "illegal" phase changes were in response
- * to our ATN to flag a CRC error, AND we ended up
- * on packet boundaries, clear the error, restart the
- * LQI manager as appropriate, and go on our merry
- * way toward sending the message. Otherwise, reset
- * the bus to clear the error.
- */
- ahd_set_active_fifo(ahd);
- if ((ahd_inb(ahd, SCSISIGO) & ATNO) != 0
- && (ahd_inb(ahd, MDFFSTAT) & DLZERO) != 0) {
- if ((lqistat1 & LQIPHASE_LQ) != 0) {
- printf("LQIRETRY for LQIPHASE_LQ\n");
- ahd_outb(ahd, LQCTL2, LQIRETRY);
- } else if ((lqistat1 & LQIPHASE_NLQ) != 0) {
- printf("LQIRETRY for LQIPHASE_NLQ\n");
- ahd_outb(ahd, LQCTL2, LQIRETRY);
- } else
- panic("ahd_handle_lqiphase_error: No phase errors\n");
- ahd_dump_card_state(ahd);
- ahd_outb(ahd, CLRINT, CLRSCSIINT);
- ahd_unpause(ahd);
- } else {
- printf("Reseting Channel for LQI Phase error\n");
- ahd_dump_card_state(ahd);
- ahd_reset_channel(ahd, 'A', /*Initiate Reset*/TRUE);
- }
-}
-
-/*
- * Packetized unexpected or expected busfree.
- * Entered in mode based on busfreetime.
- */
-static int
-ahd_handle_pkt_busfree(struct ahd_softc *ahd, u_int busfreetime)
-{
- u_int lqostat1;
-
- AHD_ASSERT_MODES(ahd, ~(AHD_MODE_UNKNOWN_MSK|AHD_MODE_CFG_MSK),
- ~(AHD_MODE_UNKNOWN_MSK|AHD_MODE_CFG_MSK));
- lqostat1 = ahd_inb(ahd, LQOSTAT1);
- if ((lqostat1 & LQOBUSFREE) != 0) {
- struct scb *scb;
- u_int scbid;
- u_int saved_scbptr;
- u_int waiting_h;
- u_int waiting_t;
- u_int next;
-
- if ((busfreetime & BUSFREE_LQO) == 0)
- printf("%s: Warning, BUSFREE time is 0x%x. "
- "Expected BUSFREE_LQO.\n",
- ahd_name(ahd), busfreetime);
- /*
- * The LQO manager detected an unexpected busfree
- * either:
- *
- * 1) During an outgoing LQ.
- * 2) After an outgoing LQ but before the first
- * REQ of the command packet.
- * 3) During an outgoing command packet.
- *
- * In all cases, CURRSCB is pointing to the
- * SCB that encountered the failure. Clean
- * up the queue, clear SELDO and LQOBUSFREE,
- * and allow the sequencer to restart the select
- * out at its lesure.
- */
- ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
- scbid = ahd_inw(ahd, CURRSCB);
- scb = ahd_lookup_scb(ahd, scbid);
- if (scb == NULL)
- panic("SCB not valid during LQOBUSFREE");
- /*
- * Return the LQO manager to its idle loop. It will
- * not do this automatically if the busfree occurs
- * after the first REQ of either the LQ or command
- * packet or between the LQ and command packet.
- */
- ahd_outb(ahd, LQCTL2, ahd_inb(ahd, LQCTL2) | LQOTOIDLE);
-
- /*
- * Clear the status.
- */
- ahd_outb(ahd, CLRLQOINT1, CLRLQOBUSFREE);
- if ((ahd->bugs & AHD_CLRLQO_AUTOCLR_BUG) != 0)
- ahd_outb(ahd, CLRLQOINT1, 0);
- ahd_outb(ahd, SCSISEQ0, ahd_inb(ahd, SCSISEQ0) & ~ENSELO);
- ahd_outb(ahd, CLRSINT0, CLRSELDO);
-
- /*
- * Update the waiting for selection queue so
- * we restart on the correct SCB.
- */
- waiting_h = ahd_inw(ahd, WAITING_TID_HEAD);
- saved_scbptr = ahd_get_scbptr(ahd);
- if (waiting_h != scbid) {
-
- ahd_outw(ahd, WAITING_TID_HEAD, scbid);
- waiting_t = ahd_inw(ahd, WAITING_TID_TAIL);
- next = SCB_LIST_NULL;
- if (waiting_t == waiting_h) {
- ahd_outw(ahd, WAITING_TID_TAIL, scbid);
- } else {
- ahd_set_scbptr(ahd, waiting_h);
- next = ahd_inw(ahd, SCB_NEXT2);
- }
- ahd_set_scbptr(ahd, scbid);
- ahd_outw(ahd, SCB_NEXT2, next);
- }
- ahd_set_scbptr(ahd, saved_scbptr);
- if (scb->crc_retry_count < AHD_MAX_LQ_CRC_ERRORS) {
- if (SCB_IS_SILENT(scb) == FALSE) {
- ahd_print_path(ahd, scb);
- printf("Probable outgoing LQ CRC error. "
- "Retrying command\n");
- }
- scb->crc_retry_count++;
- } else {
- ahd_set_transaction_status(scb, CAM_UNCOR_PARITY);
- ahd_freeze_scb(scb);
- ahd_freeze_devq(ahd, scb);
- }
- /* Return unpausing the sequencer. */
- return (0);
- } else if ((ahd_inb(ahd, PERRDIAG) & PARITYERR) != 0) {
- /*
- * Ignore what are really parity errors that
- * occur on the last REQ of a free running
- * clock prior to going busfree. Some drives
- * do not properly active negate just before
- * going busfree resulting in a parity glitch.
- */
- ahd_outb(ahd, CLRSINT1, CLRSCSIPERR|CLRBUSFREE);
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MASKED_ERRORS) != 0)
- printf("%s: Parity on last REQ detected "
- "during busfree phase.\n",
- ahd_name(ahd));
-#endif
- /* Return unpausing the sequencer. */
- return (0);
- }
- if (ahd->src_mode != AHD_MODE_SCSI) {
- u_int scbid;
- struct scb *scb;
-
- scbid = ahd_get_scbptr(ahd);
- scb = ahd_lookup_scb(ahd, scbid);
- ahd_print_path(ahd, scb);
- printf("Unexpected PKT busfree condition\n");
- ahd_abort_scbs(ahd, SCB_GET_TARGET(ahd, scb), 'A',
- SCB_GET_LUN(scb), SCB_GET_TAG(scb),
- ROLE_INITIATOR, CAM_UNEXP_BUSFREE);
-
- /* Return restarting the sequencer. */
- return (1);
- }
- printf("%s: Unexpected PKT busfree condition\n", ahd_name(ahd));
- ahd_dump_card_state(ahd);
- /* Restart the sequencer. */
- return (1);
-}
-
-/*
- * Non-packetized unexpected or expected busfree.
- */
-static int
-ahd_handle_nonpkt_busfree(struct ahd_softc *ahd)
-{
- struct ahd_devinfo devinfo;
- struct scb *scb;
- u_int lastphase;
- u_int saved_scsiid;
- u_int saved_lun;
- u_int target;
- u_int initiator_role_id;
- u_int scbid;
- u_int ppr_busfree;
- int printerror;
-
- /*
- * Look at what phase we were last in. If its message out,
- * chances are pretty good that the busfree was in response
- * to one of our abort requests.
- */
- lastphase = ahd_inb(ahd, LASTPHASE);
- saved_scsiid = ahd_inb(ahd, SAVED_SCSIID);
- saved_lun = ahd_inb(ahd, SAVED_LUN);
- target = SCSIID_TARGET(ahd, saved_scsiid);
- initiator_role_id = SCSIID_OUR_ID(saved_scsiid);
- ahd_compile_devinfo(&devinfo, initiator_role_id,
- target, saved_lun, 'A', ROLE_INITIATOR);
- printerror = 1;
-
- scbid = ahd_get_scbptr(ahd);
- scb = ahd_lookup_scb(ahd, scbid);
- if (scb != NULL
- && (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) != 0)
- scb = NULL;
-
- ppr_busfree = (ahd->msg_flags & MSG_FLAG_EXPECT_PPR_BUSFREE) != 0;
- if (lastphase == P_MESGOUT) {
- u_int tag;
-
- tag = SCB_LIST_NULL;
- if (ahd_sent_msg(ahd, AHDMSG_1B, MSG_ABORT_TAG, TRUE)
- || ahd_sent_msg(ahd, AHDMSG_1B, MSG_ABORT, TRUE)) {
- int found;
- int sent_msg;
-
- if (scb == NULL) {
- ahd_print_devinfo(ahd, &devinfo);
- printf("Abort for unidentified "
- "connection completed.\n");
- /* restart the sequencer. */
- return (1);
- }
- sent_msg = ahd->msgout_buf[ahd->msgout_index - 1];
- ahd_print_path(ahd, scb);
- printf("SCB %d - Abort%s Completed.\n",
- SCB_GET_TAG(scb),
- sent_msg == MSG_ABORT_TAG ? "" : " Tag");
-
- if (sent_msg == MSG_ABORT_TAG)
- tag = SCB_GET_TAG(scb);
-
- if ((scb->flags & SCB_CMDPHASE_ABORT) != 0) {
- /*
- * This abort is in response to an
- * unexpected switch to command phase
- * for a packetized connection. Since
- * the identify message was never sent,
- * "saved lun" is 0. We really want to
- * abort only the SCB that encountered
- * this error, which could have a different
- * lun. The SCB will be retried so the OS
- * will see the UA after renegotiating to
- * packetized.
- */
- tag = SCB_GET_TAG(scb);
- saved_lun = scb->hscb->lun;
- }
- found = ahd_abort_scbs(ahd, target, 'A', saved_lun,
- tag, ROLE_INITIATOR,
- CAM_REQ_ABORTED);
- printf("found == 0x%x\n", found);
- printerror = 0;
- } else if (ahd_sent_msg(ahd, AHDMSG_1B,
- MSG_BUS_DEV_RESET, TRUE)) {
-#ifdef __FreeBSD__
- /*
- * Don't mark the user's request for this BDR
- * as completing with CAM_BDR_SENT. CAM3
- * specifies CAM_REQ_CMP.
- */
- if (scb != NULL
- && scb->io_ctx->ccb_h.func_code== XPT_RESET_DEV
- && ahd_match_scb(ahd, scb, target, 'A',
- CAM_LUN_WILDCARD, SCB_LIST_NULL,
- ROLE_INITIATOR))
- ahd_set_transaction_status(scb, CAM_REQ_CMP);
-#endif
- ahd_handle_devreset(ahd, &devinfo, CAM_LUN_WILDCARD,
- CAM_BDR_SENT, "Bus Device Reset",
- /*verbose_level*/0);
- printerror = 0;
- } else if (ahd_sent_msg(ahd, AHDMSG_EXT, MSG_EXT_PPR, FALSE)
- && ppr_busfree == 0) {
- struct ahd_initiator_tinfo *tinfo;
- struct ahd_tmode_tstate *tstate;
-
- /*
- * PPR Rejected. Try non-ppr negotiation
- * and retry command.
- */
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MESSAGES) != 0)
- printf("PPR negotiation rejected busfree.\n");
-#endif
- tinfo = ahd_fetch_transinfo(ahd, devinfo.channel,
- devinfo.our_scsiid,
- devinfo.target, &tstate);
- tinfo->curr.transport_version = 2;
- tinfo->goal.transport_version = 2;
- tinfo->goal.ppr_options = 0;
- ahd_qinfifo_requeue_tail(ahd, scb);
- printerror = 0;
- } else if ((ahd_sent_msg(ahd, AHDMSG_EXT, MSG_EXT_WDTR, FALSE)
- || ahd_sent_msg(ahd, AHDMSG_EXT, MSG_EXT_SDTR, FALSE))
- && ppr_busfree == 0) {
- /*
- * Negotiation Rejected. Go-async and
- * retry command.
- */
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MESSAGES) != 0)
- printf("Negotiation rejected busfree.\n");
-#endif
- ahd_set_width(ahd, &devinfo,
- MSG_EXT_WDTR_BUS_8_BIT,
- AHD_TRANS_CUR|AHD_TRANS_GOAL,
- /*paused*/TRUE);
- ahd_set_syncrate(ahd, &devinfo,
- /*period*/0, /*offset*/0,
- /*ppr_options*/0,
- AHD_TRANS_CUR|AHD_TRANS_GOAL,
- /*paused*/TRUE);
- ahd_qinfifo_requeue_tail(ahd, scb);
- printerror = 0;
- } else if ((ahd->msg_flags & MSG_FLAG_EXPECT_IDE_BUSFREE) != 0
- && ahd_sent_msg(ahd, AHDMSG_1B,
- MSG_INITIATOR_DET_ERR, TRUE)) {
-
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MESSAGES) != 0)
- printf("Expected IDE Busfree\n");
-#endif
- printerror = 0;
- } else if ((ahd->msg_flags & MSG_FLAG_EXPECT_QASREJ_BUSFREE)
- && ahd_sent_msg(ahd, AHDMSG_1B,
- MSG_MESSAGE_REJECT, TRUE)) {
-
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MESSAGES) != 0)
- printf("Expected QAS Reject Busfree\n");
-#endif
- printerror = 0;
- }
- }
-
- /*
- * The busfree required flag is honored at the end of
- * the message phases. We check it last in case we
- * had to send some other message that caused a busfree.
- */
- if (printerror != 0
- && (lastphase == P_MESGIN || lastphase == P_MESGOUT)
- && ((ahd->msg_flags & MSG_FLAG_EXPECT_PPR_BUSFREE) != 0)) {
-
- ahd_freeze_devq(ahd, scb);
- ahd_set_transaction_status(scb, CAM_REQUEUE_REQ);
- ahd_freeze_scb(scb);
- if ((ahd->msg_flags & MSG_FLAG_IU_REQ_CHANGED) != 0) {
- ahd_abort_scbs(ahd, SCB_GET_TARGET(ahd, scb),
- SCB_GET_CHANNEL(ahd, scb),
- SCB_GET_LUN(scb), SCB_LIST_NULL,
- ROLE_INITIATOR, CAM_REQ_ABORTED);
- } else {
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MESSAGES) != 0)
- printf("PPR Negotiation Busfree.\n");
-#endif
- ahd_done(ahd, scb);
- }
- printerror = 0;
- }
- if (printerror != 0) {
- int aborted;
-
- aborted = 0;
- if (scb != NULL) {
- u_int tag;
-
- if ((scb->hscb->control & TAG_ENB) != 0)
- tag = SCB_GET_TAG(scb);
- else
- tag = SCB_LIST_NULL;
- ahd_print_path(ahd, scb);
- aborted = ahd_abort_scbs(ahd, target, 'A',
- SCB_GET_LUN(scb), tag,
- ROLE_INITIATOR,
- CAM_UNEXP_BUSFREE);
- } else {
- /*
- * We had not fully identified this connection,
- * so we cannot abort anything.
- */
- printf("%s: ", ahd_name(ahd));
- }
- if (lastphase != P_BUSFREE)
- ahd_force_renegotiation(ahd, &devinfo);
- printf("Unexpected busfree %s, %d SCBs aborted, "
- "PRGMCNT == 0x%x\n",
- ahd_lookup_phase_entry(lastphase)->phasemsg,
- aborted,
- ahd_inb(ahd, PRGMCNT)
- | (ahd_inb(ahd, PRGMCNT+1) << 8));
- ahd_dump_card_state(ahd);
- }
- /* Always restart the sequencer. */
- return (1);
-}
-
-static void
-ahd_handle_proto_violation(struct ahd_softc *ahd)
-{
- struct ahd_devinfo devinfo;
- struct scb *scb;
- u_int scbid;
- u_int seq_flags;
- u_int curphase;
- u_int lastphase;
- int found;
-
- ahd_fetch_devinfo(ahd, &devinfo);
- scbid = ahd_get_scbptr(ahd);
- scb = ahd_lookup_scb(ahd, scbid);
- seq_flags = ahd_inb(ahd, SEQ_FLAGS);
- curphase = ahd_inb(ahd, SCSISIGI) & PHASE_MASK;
- lastphase = ahd_inb(ahd, LASTPHASE);
- if ((seq_flags & NOT_IDENTIFIED) != 0) {
-
- /*
- * The reconnecting target either did not send an
- * identify message, or did, but we didn't find an SCB
- * to match.
- */
- ahd_print_devinfo(ahd, &devinfo);
- printf("Target did not send an IDENTIFY message. "
- "LASTPHASE = 0x%x.\n", lastphase);
- scb = NULL;
- } else if (scb == NULL) {
- /*
- * We don't seem to have an SCB active for this
- * transaction. Print an error and reset the bus.
- */
- ahd_print_devinfo(ahd, &devinfo);
- printf("No SCB found during protocol violation\n");
- goto proto_violation_reset;
- } else {
- ahd_set_transaction_status(scb, CAM_SEQUENCE_FAIL);
- if ((seq_flags & NO_CDB_SENT) != 0) {
- ahd_print_path(ahd, scb);
- printf("No or incomplete CDB sent to device.\n");
- } else if ((ahd_inb(ahd, SCB_CONTROL) & STATUS_RCVD) == 0) {
- /*
- * The target never bothered to provide status to
- * us prior to completing the command. Since we don't
- * know the disposition of this command, we must attempt
- * to abort it. Assert ATN and prepare to send an abort
- * message.
- */
- ahd_print_path(ahd, scb);
- printf("Completed command without status.\n");
- } else {
- ahd_print_path(ahd, scb);
- printf("Unknown protocol violation.\n");
- ahd_dump_card_state(ahd);
- }
- }
- if ((lastphase & ~P_DATAIN_DT) == 0
- || lastphase == P_COMMAND) {
-proto_violation_reset:
- /*
- * Target either went directly to data
- * phase or didn't respond to our ATN.
- * The only safe thing to do is to blow
- * it away with a bus reset.
- */
- found = ahd_reset_channel(ahd, 'A', TRUE);
- printf("%s: Issued Channel %c Bus Reset. "
- "%d SCBs aborted\n", ahd_name(ahd), 'A', found);
- } else {
- /*
- * Leave the selection hardware off in case
- * this abort attempt will affect yet to
- * be sent commands.
- */
- ahd_outb(ahd, SCSISEQ0,
- ahd_inb(ahd, SCSISEQ0) & ~ENSELO);
- ahd_assert_atn(ahd);
- ahd_outb(ahd, MSG_OUT, HOST_MSG);
- if (scb == NULL) {
- ahd_print_devinfo(ahd, &devinfo);
- ahd->msgout_buf[0] = MSG_ABORT_TASK;
- ahd->msgout_len = 1;
- ahd->msgout_index = 0;
- ahd->msg_type = MSG_TYPE_INITIATOR_MSGOUT;
- } else {
- ahd_print_path(ahd, scb);
- scb->flags |= SCB_ABORT;
- }
- printf("Protocol violation %s. Attempting to abort.\n",
- ahd_lookup_phase_entry(curphase)->phasemsg);
- }
-}
-
-/*
- * Force renegotiation to occur the next time we initiate
- * a command to the current device.
- */
-static void
-ahd_force_renegotiation(struct ahd_softc *ahd, struct ahd_devinfo *devinfo)
-{
- struct ahd_initiator_tinfo *targ_info;
- struct ahd_tmode_tstate *tstate;
-
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) {
- ahd_print_devinfo(ahd, devinfo);
- printf("Forcing renegotiation\n");
- }
-#endif
- targ_info = ahd_fetch_transinfo(ahd,
- devinfo->channel,
- devinfo->our_scsiid,
- devinfo->target,
- &tstate);
- ahd_update_neg_request(ahd, devinfo, tstate,
- targ_info, AHD_NEG_IF_NON_ASYNC);
-}
-
-#define AHD_MAX_STEPS 2000
-void
-ahd_clear_critical_section(struct ahd_softc *ahd)
-{
- ahd_mode_state saved_modes;
- int stepping;
- int steps;
- int first_instr;
- u_int simode0;
- u_int simode1;
- u_int simode3;
- u_int lqimode0;
- u_int lqimode1;
- u_int lqomode0;
- u_int lqomode1;
-
- if (ahd->num_critical_sections == 0)
- return;
-
- stepping = FALSE;
- steps = 0;
- first_instr = 0;
- simode0 = 0;
- simode1 = 0;
- simode3 = 0;
- lqimode0 = 0;
- lqimode1 = 0;
- lqomode0 = 0;
- lqomode1 = 0;
- saved_modes = ahd_save_modes(ahd);
- for (;;) {
- struct cs *cs;
- u_int seqaddr;
- u_int i;
-
- ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
- seqaddr = ahd_inb(ahd, CURADDR)
- | (ahd_inb(ahd, CURADDR+1) << 8);
-
- cs = ahd->critical_sections;
- for (i = 0; i < ahd->num_critical_sections; i++, cs++) {
-
- if (cs->begin < seqaddr && cs->end >= seqaddr)
- break;
- }
-
- if (i == ahd->num_critical_sections)
- break;
-
- if (steps > AHD_MAX_STEPS) {
- printf("%s: Infinite loop in critical section\n"
- "%s: First Instruction 0x%x now 0x%x\n",
- ahd_name(ahd), ahd_name(ahd), first_instr,
- seqaddr);
- ahd_dump_card_state(ahd);
- panic("critical section loop");
- }
-
- steps++;
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MISC) != 0)
- printf("%s: Single stepping at 0x%x\n", ahd_name(ahd),
- seqaddr);
-#endif
- if (stepping == FALSE) {
-
- first_instr = seqaddr;
- ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG);
- simode0 = ahd_inb(ahd, SIMODE0);
- simode3 = ahd_inb(ahd, SIMODE3);
- lqimode0 = ahd_inb(ahd, LQIMODE0);
- lqimode1 = ahd_inb(ahd, LQIMODE1);
- lqomode0 = ahd_inb(ahd, LQOMODE0);
- lqomode1 = ahd_inb(ahd, LQOMODE1);
- ahd_outb(ahd, SIMODE0, 0);
- ahd_outb(ahd, SIMODE3, 0);
- ahd_outb(ahd, LQIMODE0, 0);
- ahd_outb(ahd, LQIMODE1, 0);
- ahd_outb(ahd, LQOMODE0, 0);
- ahd_outb(ahd, LQOMODE1, 0);
- ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
- simode1 = ahd_inb(ahd, SIMODE1);
- ahd_outb(ahd, SIMODE1, ENBUSFREE);
- ahd_outb(ahd, SEQCTL0, ahd_inb(ahd, SEQCTL0) | STEP);
- stepping = TRUE;
- }
- ahd_outb(ahd, CLRSINT1, CLRBUSFREE);
- ahd_outb(ahd, CLRINT, CLRSCSIINT);
- ahd_set_modes(ahd, ahd->saved_src_mode, ahd->saved_dst_mode);
- ahd_outb(ahd, HCNTRL, ahd->unpause);
- do {
- ahd_delay(200);
- } while (!ahd_is_paused(ahd));
- ahd_update_modes(ahd);
- }
- if (stepping) {
- ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG);
- ahd_outb(ahd, SIMODE0, simode0);
- ahd_outb(ahd, SIMODE3, simode3);
- ahd_outb(ahd, LQIMODE0, lqimode0);
- ahd_outb(ahd, LQIMODE1, lqimode1);
- ahd_outb(ahd, LQOMODE0, lqomode0);
- ahd_outb(ahd, LQOMODE1, lqomode1);
- ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
- ahd_outb(ahd, SEQCTL0, ahd_inb(ahd, SEQCTL0) & ~STEP);
- ahd_outb(ahd, SIMODE1, simode1);
- }
- ahd_restore_modes(ahd, saved_modes);
-}
-
-/*
- * Clear any pending interrupt status.
- */
-void
-ahd_clear_intstat(struct ahd_softc *ahd)
-{
- AHD_ASSERT_MODES(ahd, ~(AHD_MODE_UNKNOWN_MSK|AHD_MODE_CFG_MSK),
- ~(AHD_MODE_UNKNOWN_MSK|AHD_MODE_CFG_MSK));
- /* Clear any interrupt conditions this may have caused */
- ahd_outb(ahd, CLRLQIINT0, CLRLQIATNQAS|CLRLQICRCT1|CLRLQICRCT2
- |CLRLQIBADLQT|CLRLQIATNLQ|CLRLQIATNCMD);
- ahd_outb(ahd, CLRLQIINT1, CLRLQIPHASE_LQ|CLRLQIPHASE_NLQ|CLRLIQABORT
- |CLRLQICRCI_LQ|CLRLQICRCI_NLQ|CLRLQIBADLQI
- |CLRLQIOVERI_LQ|CLRLQIOVERI_NLQ|CLRNONPACKREQ);
- ahd_outb(ahd, CLRLQOINT0, CLRLQOTARGSCBPERR|CLRLQOSTOPT2|CLRLQOATNLQ
- |CLRLQOATNPKT|CLRLQOTCRC);
- ahd_outb(ahd, CLRLQOINT1, CLRLQOINITSCBPERR|CLRLQOSTOPI2|CLRLQOBADQAS
- |CLRLQOBUSFREE|CLRLQOPHACHGINPKT);
- if ((ahd->bugs & AHD_CLRLQO_AUTOCLR_BUG) != 0) {
- ahd_outb(ahd, CLRLQOINT0, 0);
- ahd_outb(ahd, CLRLQOINT1, 0);
- }
- ahd_outb(ahd, CLRSINT3, CLRNTRAMPERR|CLROSRAMPERR);
- ahd_outb(ahd, CLRSINT1, CLRSELTIMEO|CLRATNO|CLRSCSIRSTI
- |CLRBUSFREE|CLRSCSIPERR|CLRREQINIT);
- ahd_outb(ahd, CLRSINT0, CLRSELDO|CLRSELDI|CLRSELINGO
- |CLRIOERR|CLROVERRUN);
- ahd_outb(ahd, CLRINT, CLRSCSIINT);
-}
-
-/**************************** Debugging Routines ******************************/
-#ifdef AHD_DEBUG
-uint32_t ahd_debug = AHD_DEBUG_OPTS;
-#endif
-void
-ahd_print_scb(struct scb *scb)
-{
- struct hardware_scb *hscb;
- int i;
-
- hscb = scb->hscb;
- printf("scb:%p control:0x%x scsiid:0x%x lun:%d cdb_len:%d\n",
- (void *)scb,
- hscb->control,
- hscb->scsiid,
- hscb->lun,
- hscb->cdb_len);
- printf("Shared Data: ");
- for (i = 0; i < sizeof(hscb->shared_data.idata.cdb); i++)
- printf("%#02x", hscb->shared_data.idata.cdb[i]);
- printf(" dataptr:%#x%x datacnt:%#x sgptr:%#x tag:%#x\n",
- (uint32_t)((ahd_le64toh(hscb->dataptr) >> 32) & 0xFFFFFFFF),
- (uint32_t)(ahd_le64toh(hscb->dataptr) & 0xFFFFFFFF),
- ahd_le32toh(hscb->datacnt),
- ahd_le32toh(hscb->sgptr),
- SCB_GET_TAG(scb));
- ahd_dump_sglist(scb);
-}
-
-void
-ahd_dump_sglist(struct scb *scb)
-{
- int i;
-
- if (scb->sg_count > 0) {
- if ((scb->ahd_softc->flags & AHD_64BIT_ADDRESSING) != 0) {
- struct ahd_dma64_seg *sg_list;
-
- sg_list = (struct ahd_dma64_seg*)scb->sg_list;
- for (i = 0; i < scb->sg_count; i++) {
- uint64_t addr;
- uint32_t len;
-
- addr = ahd_le64toh(sg_list[i].addr);
- len = ahd_le32toh(sg_list[i].len);
- printf("sg[%d] - Addr 0x%x%x : Length %d%s\n",
- i,
- (uint32_t)((addr >> 32) & 0xFFFFFFFF),
- (uint32_t)(addr & 0xFFFFFFFF),
- sg_list[i].len & AHD_SG_LEN_MASK,
- (sg_list[i].len & AHD_DMA_LAST_SEG)
- ? " Last" : "");
- }
- } else {
- struct ahd_dma_seg *sg_list;
-
- sg_list = (struct ahd_dma_seg*)scb->sg_list;
- for (i = 0; i < scb->sg_count; i++) {
- uint32_t len;
-
- len = ahd_le32toh(sg_list[i].len);
- printf("sg[%d] - Addr 0x%x%x : Length %d%s\n",
- i,
- (len >> 24) & SG_HIGH_ADDR_BITS,
- ahd_le32toh(sg_list[i].addr),
- len & AHD_SG_LEN_MASK,
- len & AHD_DMA_LAST_SEG ? " Last" : "");
- }
- }
- }
-}
-
-/************************* Transfer Negotiation *******************************/
-/*
- * Allocate per target mode instance (ID we respond to as a target)
- * transfer negotiation data structures.
- */
-static struct ahd_tmode_tstate *
-ahd_alloc_tstate(struct ahd_softc *ahd, u_int scsi_id, char channel)
-{
- struct ahd_tmode_tstate *master_tstate;
- struct ahd_tmode_tstate *tstate;
- int i;
-
- master_tstate = ahd->enabled_targets[ahd->our_id];
- if (ahd->enabled_targets[scsi_id] != NULL
- && ahd->enabled_targets[scsi_id] != master_tstate)
- panic("%s: ahd_alloc_tstate - Target already allocated",
- ahd_name(ahd));
- tstate = malloc(sizeof(*tstate), M_DEVBUF, M_NOWAIT);
- if (tstate == NULL)
- return (NULL);
-
- /*
- * If we have allocated a master tstate, copy user settings from
- * the master tstate (taken from SRAM or the EEPROM) for this
- * channel, but reset our current and goal settings to async/narrow
- * until an initiator talks to us.
- */
- if (master_tstate != NULL) {
- memcpy(tstate, master_tstate, sizeof(*tstate));
- memset(tstate->enabled_luns, 0, sizeof(tstate->enabled_luns));
- for (i = 0; i < 16; i++) {
- memset(&tstate->transinfo[i].curr, 0,
- sizeof(tstate->transinfo[i].curr));
- memset(&tstate->transinfo[i].goal, 0,
- sizeof(tstate->transinfo[i].goal));
- }
- } else
- memset(tstate, 0, sizeof(*tstate));
- ahd->enabled_targets[scsi_id] = tstate;
- return (tstate);
-}
-
-#ifdef AHD_TARGET_MODE
-/*
- * Free per target mode instance (ID we respond to as a target)
- * transfer negotiation data structures.
- */
-static void
-ahd_free_tstate(struct ahd_softc *ahd, u_int scsi_id, char channel, int force)
-{
- struct ahd_tmode_tstate *tstate;
-
- /*
- * Don't clean up our "master" tstate.
- * It has our default user settings.
- */
- if (scsi_id == ahd->our_id
- && force == FALSE)
- return;
-
- tstate = ahd->enabled_targets[scsi_id];
- if (tstate != NULL)
- free(tstate, M_DEVBUF);
- ahd->enabled_targets[scsi_id] = NULL;
-}
-#endif
-
-/*
- * Called when we have an active connection to a target on the bus,
- * this function finds the nearest period to the input period limited
- * by the capabilities of the bus connectivity of and sync settings for
- * the target.
- */
-void
-ahd_devlimited_syncrate(struct ahd_softc *ahd,
- struct ahd_initiator_tinfo *tinfo,
- u_int *period, u_int *ppr_options, role_t role)
-{
- struct ahd_transinfo *transinfo;
- u_int maxsync;
-
- if ((ahd_inb(ahd, SBLKCTL) & ENAB40) != 0
- && (ahd_inb(ahd, SSTAT2) & EXP_ACTIVE) == 0) {
- maxsync = AHD_SYNCRATE_PACED;
- } else {
- maxsync = AHD_SYNCRATE_ULTRA;
- /* Can't do DT related options on an SE bus */
- *ppr_options &= MSG_EXT_PPR_QAS_REQ;
- }
- /*
- * Never allow a value higher than our current goal
- * period otherwise we may allow a target initiated
- * negotiation to go above the limit as set by the
- * user. In the case of an initiator initiated
- * sync negotiation, we limit based on the user
- * setting. This allows the system to still accept
- * incoming negotiations even if target initiated
- * negotiation is not performed.
- */
- if (role == ROLE_TARGET)
- transinfo = &tinfo->user;
- else
- transinfo = &tinfo->goal;
- *ppr_options &= (transinfo->ppr_options|MSG_EXT_PPR_PCOMP_EN);
- if (transinfo->width == MSG_EXT_WDTR_BUS_8_BIT) {
- maxsync = MAX(maxsync, AHD_SYNCRATE_ULTRA2);
- *ppr_options &= ~MSG_EXT_PPR_DT_REQ;
- }
- if (transinfo->period == 0) {
- *period = 0;
- *ppr_options = 0;
- } else {
- *period = MAX(*period, transinfo->period);
- ahd_find_syncrate(ahd, period, ppr_options, maxsync);
- }
-}
-
-/*
- * Look up the valid period to SCSIRATE conversion in our table.
- * Return the period and offset that should be sent to the target
- * if this was the beginning of an SDTR.
- */
-void
-ahd_find_syncrate(struct ahd_softc *ahd, u_int *period,
- u_int *ppr_options, u_int maxsync)
-{
- if (*period < maxsync)
- *period = maxsync;
-
- if ((*ppr_options & MSG_EXT_PPR_DT_REQ) != 0
- && *period > AHD_SYNCRATE_MIN_DT)
- *ppr_options &= ~MSG_EXT_PPR_DT_REQ;
-
- if (*period > AHD_SYNCRATE_MIN)
- *period = 0;
-
- /* Honor PPR option conformance rules. */
- if (*period > AHD_SYNCRATE_PACED)
- *ppr_options &= ~MSG_EXT_PPR_RTI;
-
- if ((*ppr_options & MSG_EXT_PPR_IU_REQ) == 0)
- *ppr_options &= (MSG_EXT_PPR_DT_REQ|MSG_EXT_PPR_QAS_REQ);
-
- if ((*ppr_options & MSG_EXT_PPR_DT_REQ) == 0)
- *ppr_options &= MSG_EXT_PPR_QAS_REQ;
-
- /* Skip all PACED only entries if IU is not available */
- if ((*ppr_options & MSG_EXT_PPR_IU_REQ) == 0
- && *period < AHD_SYNCRATE_DT)
- *period = AHD_SYNCRATE_DT;
-
- /* Skip all DT only entries if DT is not available */
- if ((*ppr_options & MSG_EXT_PPR_DT_REQ) == 0
- && *period < AHD_SYNCRATE_ULTRA2)
- *period = AHD_SYNCRATE_ULTRA2;
-}
-
-/*
- * Truncate the given synchronous offset to a value the
- * current adapter type and syncrate are capable of.
- */
-void
-ahd_validate_offset(struct ahd_softc *ahd,
- struct ahd_initiator_tinfo *tinfo,
- u_int period, u_int *offset, int wide,
- role_t role)
-{
- u_int maxoffset;
-
- /* Limit offset to what we can do */
- if (period == 0)
- maxoffset = 0;
- else if (period <= AHD_SYNCRATE_PACED) {
- if ((ahd->bugs & AHD_PACED_NEGTABLE_BUG) != 0)
- maxoffset = MAX_OFFSET_PACED_BUG;
- else
- maxoffset = MAX_OFFSET_PACED;
- } else
- maxoffset = MAX_OFFSET_NON_PACED;
- *offset = MIN(*offset, maxoffset);
- if (tinfo != NULL) {
- if (role == ROLE_TARGET)
- *offset = MIN(*offset, tinfo->user.offset);
- else
- *offset = MIN(*offset, tinfo->goal.offset);
- }
-}
-
-/*
- * Truncate the given transfer width parameter to a value the
- * current adapter type is capable of.
- */
-void
-ahd_validate_width(struct ahd_softc *ahd, struct ahd_initiator_tinfo *tinfo,
- u_int *bus_width, role_t role)
-{
- switch (*bus_width) {
- default:
- if (ahd->features & AHD_WIDE) {
- /* Respond Wide */
- *bus_width = MSG_EXT_WDTR_BUS_16_BIT;
- break;
- }
- /* FALLTHROUGH */
- case MSG_EXT_WDTR_BUS_8_BIT:
- *bus_width = MSG_EXT_WDTR_BUS_8_BIT;
- break;
- }
- if (tinfo != NULL) {
- if (role == ROLE_TARGET)
- *bus_width = MIN(tinfo->user.width, *bus_width);
- else
- *bus_width = MIN(tinfo->goal.width, *bus_width);
- }
-}
-
-/*
- * Update the bitmask of targets for which the controller should
- * negotiate with at the next convenient oportunity. This currently
- * means the next time we send the initial identify messages for
- * a new transaction.
- */
-int
-ahd_update_neg_request(struct ahd_softc *ahd, struct ahd_devinfo *devinfo,
- struct ahd_tmode_tstate *tstate,
- struct ahd_initiator_tinfo *tinfo, ahd_neg_type neg_type)
-{
- u_int auto_negotiate_orig;
-
- auto_negotiate_orig = tstate->auto_negotiate;
- if (neg_type == AHD_NEG_ALWAYS) {
- /*
- * Force our "current" settings to be
- * unknown so that unless a bus reset
- * occurs the need to renegotiate is
- * recorded persistently.
- */
- if ((ahd->features & AHD_WIDE) != 0)
- tinfo->curr.width = AHD_WIDTH_UNKNOWN;
- tinfo->curr.period = AHD_PERIOD_UNKNOWN;
- tinfo->curr.offset = AHD_OFFSET_UNKNOWN;
- }
- if (tinfo->curr.period != tinfo->goal.period
- || tinfo->curr.width != tinfo->goal.width
- || tinfo->curr.offset != tinfo->goal.offset
- || tinfo->curr.ppr_options != tinfo->goal.ppr_options
- || (neg_type == AHD_NEG_IF_NON_ASYNC
- && (tinfo->goal.offset != 0
- || tinfo->goal.width != MSG_EXT_WDTR_BUS_8_BIT
- || tinfo->goal.ppr_options != 0)))
- tstate->auto_negotiate |= devinfo->target_mask;
- else
- tstate->auto_negotiate &= ~devinfo->target_mask;
-
- return (auto_negotiate_orig != tstate->auto_negotiate);
-}
-
-/*
- * Update the user/goal/curr tables of synchronous negotiation
- * parameters as well as, in the case of a current or active update,
- * any data structures on the host controller. In the case of an
- * active update, the specified target is currently talking to us on
- * the bus, so the transfer parameter update must take effect
- * immediately.
- */
-void
-ahd_set_syncrate(struct ahd_softc *ahd, struct ahd_devinfo *devinfo,
- u_int period, u_int offset, u_int ppr_options,
- u_int type, int paused)
-{
- struct ahd_initiator_tinfo *tinfo;
- struct ahd_tmode_tstate *tstate;
- u_int old_period;
- u_int old_offset;
- u_int old_ppr;
- int active;
- int update_needed;
-
- active = (type & AHD_TRANS_ACTIVE) == AHD_TRANS_ACTIVE;
- update_needed = 0;
-
- if (period == 0 || offset == 0) {
- period = 0;
- offset = 0;
- }
-
- tinfo = ahd_fetch_transinfo(ahd, devinfo->channel, devinfo->our_scsiid,
- devinfo->target, &tstate);
-
- if ((type & AHD_TRANS_USER) != 0) {
- tinfo->user.period = period;
- tinfo->user.offset = offset;
- tinfo->user.ppr_options = ppr_options;
- }
-
- if ((type & AHD_TRANS_GOAL) != 0) {
- tinfo->goal.period = period;
- tinfo->goal.offset = offset;
- tinfo->goal.ppr_options = ppr_options;
- }
-
- old_period = tinfo->curr.period;
- old_offset = tinfo->curr.offset;
- old_ppr = tinfo->curr.ppr_options;
-
- if ((type & AHD_TRANS_CUR) != 0
- && (old_period != period
- || old_offset != offset
- || old_ppr != ppr_options)) {
-
- update_needed++;
-
- tinfo->curr.period = period;
- tinfo->curr.offset = offset;
- tinfo->curr.ppr_options = ppr_options;
-
- ahd_send_async(ahd, devinfo->channel, devinfo->target,
- CAM_LUN_WILDCARD, AC_TRANSFER_NEG, NULL);
- if (bootverbose) {
- if (offset != 0) {
- int options;
-
- printf("%s: target %d synchronous with "
- "period = 0x%x, offset = 0x%x",
- ahd_name(ahd), devinfo->target,
- period, offset);
- options = 0;
- if ((ppr_options & MSG_EXT_PPR_DT_REQ) != 0) {
- printf("(DT");
- options++;
- }
- if ((ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
- printf("%s", options ? "|IU" : "(IU");
- options++;
- }
- if ((ppr_options & MSG_EXT_PPR_RTI) != 0) {
- printf("%s", options ? "|RTI" : "(RTI");
- options++;
- }
- if ((ppr_options & MSG_EXT_PPR_QAS_REQ) != 0) {
- printf("%s", options ? "|QAS" : "(QAS");
- options++;
- }
- if (options != 0)
- printf(")\n");
- else
- printf("\n");
- } else {
- printf("%s: target %d using "
- "asynchronous transfers%s\n",
- ahd_name(ahd), devinfo->target,
- (ppr_options & MSG_EXT_PPR_QAS_REQ) != 0
- ? "(QAS)" : "");
- }
- }
- }
- /*
- * Always refresh the neg-table to handle the case of the
- * sequencer setting the ENATNO bit for a MK_MESSAGE request.
- * We will always renegotiate in that case if this is a
- * packetized request. Also manage the busfree expected flag
- * from this common routine so that we catch changes due to
- * WDTR or SDTR messages.
- */
- if ((type & AHD_TRANS_CUR) != 0) {
- if (!paused)
- ahd_pause(ahd);
- ahd_update_neg_table(ahd, devinfo, &tinfo->curr);
- if (!paused)
- ahd_unpause(ahd);
- if (ahd->msg_type != MSG_TYPE_NONE) {
- if ((old_ppr & MSG_EXT_PPR_IU_REQ)
- != (ppr_options & MSG_EXT_PPR_IU_REQ)) {
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) {
- ahd_print_devinfo(ahd, devinfo);
- printf("Expecting IU Change busfree\n");
- }
-#endif
- ahd->msg_flags |= MSG_FLAG_EXPECT_PPR_BUSFREE
- | MSG_FLAG_IU_REQ_CHANGED;
- }
- if ((old_ppr & MSG_EXT_PPR_IU_REQ) != 0) {
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MESSAGES) != 0)
- printf("PPR with IU_REQ outstanding\n");
-#endif
- ahd->msg_flags |= MSG_FLAG_EXPECT_PPR_BUSFREE;
- }
- }
- }
-
- update_needed += ahd_update_neg_request(ahd, devinfo, tstate,
- tinfo, AHD_NEG_TO_GOAL);
-
- if (update_needed && active)
- ahd_update_pending_scbs(ahd);
-}
-
-/*
- * Update the user/goal/curr tables of wide negotiation
- * parameters as well as, in the case of a current or active update,
- * any data structures on the host controller. In the case of an
- * active update, the specified target is currently talking to us on
- * the bus, so the transfer parameter update must take effect
- * immediately.
- */
-void
-ahd_set_width(struct ahd_softc *ahd, struct ahd_devinfo *devinfo,
- u_int width, u_int type, int paused)
-{
- struct ahd_initiator_tinfo *tinfo;
- struct ahd_tmode_tstate *tstate;
- u_int oldwidth;
- int active;
- int update_needed;
-
- active = (type & AHD_TRANS_ACTIVE) == AHD_TRANS_ACTIVE;
- update_needed = 0;
- tinfo = ahd_fetch_transinfo(ahd, devinfo->channel, devinfo->our_scsiid,
- devinfo->target, &tstate);
-
- if ((type & AHD_TRANS_USER) != 0)
- tinfo->user.width = width;
-
- if ((type & AHD_TRANS_GOAL) != 0)
- tinfo->goal.width = width;
-
- oldwidth = tinfo->curr.width;
- if ((type & AHD_TRANS_CUR) != 0 && oldwidth != width) {
-
- update_needed++;
-
- tinfo->curr.width = width;
- ahd_send_async(ahd, devinfo->channel, devinfo->target,
- CAM_LUN_WILDCARD, AC_TRANSFER_NEG, NULL);
- if (bootverbose) {
- printf("%s: target %d using %dbit transfers\n",
- ahd_name(ahd), devinfo->target,
- 8 * (0x01 << width));
- }
- }
-
- if ((type & AHD_TRANS_CUR) != 0) {
- if (!paused)
- ahd_pause(ahd);
- ahd_update_neg_table(ahd, devinfo, &tinfo->curr);
- if (!paused)
- ahd_unpause(ahd);
- }
-
- update_needed += ahd_update_neg_request(ahd, devinfo, tstate,
- tinfo, AHD_NEG_TO_GOAL);
- if (update_needed && active)
- ahd_update_pending_scbs(ahd);
-
-}
-
-/*
- * Update the current state of tagged queuing for a given target.
- */
-void
-ahd_set_tags(struct ahd_softc *ahd, struct ahd_devinfo *devinfo,
- ahd_queue_alg alg)
-{
- ahd_platform_set_tags(ahd, devinfo, alg);
- ahd_send_async(ahd, devinfo->channel, devinfo->target,
- devinfo->lun, AC_TRANSFER_NEG, &alg);
-}
-
-static void
-ahd_update_neg_table(struct ahd_softc *ahd, struct ahd_devinfo *devinfo,
- struct ahd_transinfo *tinfo)
-{
- ahd_mode_state saved_modes;
- u_int period;
- u_int ppr_opts;
- u_int con_opts;
- u_int offset;
- u_int saved_negoaddr;
- uint8_t iocell_opts[sizeof(ahd->iocell_opts)];
-
- saved_modes = ahd_save_modes(ahd);
- ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
-
- saved_negoaddr = ahd_inb(ahd, NEGOADDR);
- ahd_outb(ahd, NEGOADDR, devinfo->target);
- period = tinfo->period;
- offset = tinfo->offset;
- memcpy(iocell_opts, ahd->iocell_opts, sizeof(ahd->iocell_opts));
- ppr_opts = tinfo->ppr_options & (MSG_EXT_PPR_QAS_REQ|MSG_EXT_PPR_DT_REQ
- |MSG_EXT_PPR_IU_REQ|MSG_EXT_PPR_RTI);
- con_opts = 0;
- if (period == 0)
- period = AHD_SYNCRATE_ASYNC;
- if (period == AHD_SYNCRATE_160) {
-
- if ((ahd->bugs & AHD_PACED_NEGTABLE_BUG) != 0) {
- /*
- * When the SPI4 spec was finalized, PACE transfers
- * was not made a configurable option in the PPR
- * message. Instead it is assumed to be enabled for
- * any syncrate faster than 80MHz. Nevertheless,
- * Harpoon2A4 allows this to be configurable.
- *
- * Harpoon2A4 also assumes at most 2 data bytes per
- * negotiated REQ/ACK offset. Paced transfers take
- * 4, so we must adjust our offset.
- */
- ppr_opts |= PPROPT_PACE;
- offset *= 2;
-
- /*
- * Harpoon2A assumed that there would be a
- * fallback rate between 160MHz and 80Mhz,
- * so 7 is used as the period factor rather
- * than 8 for 160MHz.
- */
- period = AHD_SYNCRATE_REVA_160;
- }
- if ((tinfo->ppr_options & MSG_EXT_PPR_PCOMP_EN) == 0)
- iocell_opts[AHD_PRECOMP_SLEW_INDEX] &=
- ~AHD_PRECOMP_MASK;
- } else {
- /*
- * Precomp should be disabled for non-paced transfers.
- */
- iocell_opts[AHD_PRECOMP_SLEW_INDEX] &= ~AHD_PRECOMP_MASK;
-
- if ((ahd->features & AHD_NEW_IOCELL_OPTS) != 0
- && (ppr_opts & MSG_EXT_PPR_DT_REQ) != 0) {
- /*
- * Slow down our CRC interval to be
- * compatible with devices that can't
- * handle a CRC at full speed.
- */
- con_opts |= ENSLOWCRC;
- }
- }
-
- ahd_outb(ahd, ANNEXCOL, AHD_ANNEXCOL_PRECOMP_SLEW);
- ahd_outb(ahd, ANNEXDAT, iocell_opts[AHD_PRECOMP_SLEW_INDEX]);
- ahd_outb(ahd, ANNEXCOL, AHD_ANNEXCOL_AMPLITUDE);
- ahd_outb(ahd, ANNEXDAT, iocell_opts[AHD_AMPLITUDE_INDEX]);
-
- ahd_outb(ahd, NEGPERIOD, period);
- ahd_outb(ahd, NEGPPROPTS, ppr_opts);
- ahd_outb(ahd, NEGOFFSET, offset);
-
- if (tinfo->width == MSG_EXT_WDTR_BUS_16_BIT)
- con_opts |= WIDEXFER;
-
- /*
- * During packetized transfers, the target will
- * give us the oportunity to send command packets
- * without us asserting attention.
- */
- if ((tinfo->ppr_options & MSG_EXT_PPR_IU_REQ) == 0)
- con_opts |= ENAUTOATNO;
- ahd_outb(ahd, NEGCONOPTS, con_opts);
- ahd_outb(ahd, NEGOADDR, saved_negoaddr);
- ahd_restore_modes(ahd, saved_modes);
-}
-
-/*
- * When the transfer settings for a connection change, setup for
- * negotiation in pending SCBs to effect the change as quickly as
- * possible. We also cancel any negotiations that are scheduled
- * for inflight SCBs that have not been started yet.
- */
-static void
-ahd_update_pending_scbs(struct ahd_softc *ahd)
-{
- struct scb *pending_scb;
- int pending_scb_count;
- int i;
- int paused;
- u_int saved_scbptr;
- ahd_mode_state saved_modes;
-
- /*
- * Traverse the pending SCB list and ensure that all of the
- * SCBs there have the proper settings. We can only safely
- * clear the negotiation required flag (setting requires the
- * execution queue to be modified) and this is only possible
- * if we are not already attempting to select out for this
- * SCB. For this reason, all callers only call this routine
- * if we are changing the negotiation settings for the currently
- * active transaction on the bus.
- */
- pending_scb_count = 0;
- LIST_FOREACH(pending_scb, &ahd->pending_scbs, pending_links) {
- struct ahd_devinfo devinfo;
- struct hardware_scb *pending_hscb;
- struct ahd_initiator_tinfo *tinfo;
- struct ahd_tmode_tstate *tstate;
-
- ahd_scb_devinfo(ahd, &devinfo, pending_scb);
- tinfo = ahd_fetch_transinfo(ahd, devinfo.channel,
- devinfo.our_scsiid,
- devinfo.target, &tstate);
- pending_hscb = pending_scb->hscb;
- if ((tstate->auto_negotiate & devinfo.target_mask) == 0
- && (pending_scb->flags & SCB_AUTO_NEGOTIATE) != 0) {
- pending_scb->flags &= ~SCB_AUTO_NEGOTIATE;
- pending_hscb->control &= ~MK_MESSAGE;
- }
- ahd_sync_scb(ahd, pending_scb,
- BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE);
- pending_scb_count++;
- }
-
- if (pending_scb_count == 0)
- return;
-
- if (ahd_is_paused(ahd)) {
- paused = 1;
- } else {
- paused = 0;
- ahd_pause(ahd);
- }
-
- /*
- * Force the sequencer to reinitialize the selection for
- * the command at the head of the execution queue if it
- * has already been setup. The negotiation changes may
- * effect whether we select-out with ATN.
- */
- saved_modes = ahd_save_modes(ahd);
- ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
- ahd_outb(ahd, SCSISEQ0, ahd_inb(ahd, SCSISEQ0) & ~ENSELO);
- saved_scbptr = ahd_get_scbptr(ahd);
- /* Ensure that the hscbs down on the card match the new information */
- for (i = 0; i < ahd->scb_data.maxhscbs; i++) {
- struct hardware_scb *pending_hscb;
- u_int control;
- u_int scb_tag;
-
- ahd_set_scbptr(ahd, i);
- scb_tag = i;
- pending_scb = ahd_lookup_scb(ahd, scb_tag);
- if (pending_scb == NULL)
- continue;
-
- pending_hscb = pending_scb->hscb;
- control = ahd_inb_scbram(ahd, SCB_CONTROL);
- control &= ~MK_MESSAGE;
- control |= pending_hscb->control & MK_MESSAGE;
- ahd_outb(ahd, SCB_CONTROL, control);
- }
- ahd_set_scbptr(ahd, saved_scbptr);
- ahd_restore_modes(ahd, saved_modes);
-
- if (paused == 0)
- ahd_unpause(ahd);
-}
-
-/**************************** Pathing Information *****************************/
-static void
-ahd_fetch_devinfo(struct ahd_softc *ahd, struct ahd_devinfo *devinfo)
-{
- ahd_mode_state saved_modes;
- u_int saved_scsiid;
- role_t role;
- int our_id;
-
- saved_modes = ahd_save_modes(ahd);
- ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
-
- if (ahd_inb(ahd, SSTAT0) & TARGET)
- role = ROLE_TARGET;
- else
- role = ROLE_INITIATOR;
-
- if (role == ROLE_TARGET
- && (ahd_inb(ahd, SEQ_FLAGS) & CMDPHASE_PENDING) != 0) {
- /* We were selected, so pull our id from TARGIDIN */
- our_id = ahd_inb(ahd, TARGIDIN) & OID;
- } else if (role == ROLE_TARGET)
- our_id = ahd_inb(ahd, TOWNID);
- else
- our_id = ahd_inb(ahd, IOWNID);
-
- saved_scsiid = ahd_inb(ahd, SAVED_SCSIID);
- ahd_compile_devinfo(devinfo,
- our_id,
- SCSIID_TARGET(ahd, saved_scsiid),
- ahd_inb(ahd, SAVED_LUN),
- SCSIID_CHANNEL(ahd, saved_scsiid),
- role);
- ahd_restore_modes(ahd, saved_modes);
-}
-
-void
-ahd_print_devinfo(struct ahd_softc *ahd, struct ahd_devinfo *devinfo)
-{
- printf("%s:%c:%d:%d: ", ahd_name(ahd), 'A',
- devinfo->target, devinfo->lun);
-}
-
-struct ahd_phase_table_entry*
-ahd_lookup_phase_entry(int phase)
-{
- struct ahd_phase_table_entry *entry;
- struct ahd_phase_table_entry *last_entry;
-
- /*
- * num_phases doesn't include the default entry which
- * will be returned if the phase doesn't match.
- */
- last_entry = &ahd_phase_table[num_phases];
- for (entry = ahd_phase_table; entry < last_entry; entry++) {
- if (phase == entry->phase)
- break;
- }
- return (entry);
-}
-
-void
-ahd_compile_devinfo(struct ahd_devinfo *devinfo, u_int our_id, u_int target,
- u_int lun, char channel, role_t role)
-{
- devinfo->our_scsiid = our_id;
- devinfo->target = target;
- devinfo->lun = lun;
- devinfo->target_offset = target;
- devinfo->channel = channel;
- devinfo->role = role;
- if (channel == 'B')
- devinfo->target_offset += 8;
- devinfo->target_mask = (0x01 << devinfo->target_offset);
-}
-
-static void
-ahd_scb_devinfo(struct ahd_softc *ahd, struct ahd_devinfo *devinfo,
- struct scb *scb)
-{
- role_t role;
- int our_id;
-
- our_id = SCSIID_OUR_ID(scb->hscb->scsiid);
- role = ROLE_INITIATOR;
- if ((scb->hscb->control & TARGET_SCB) != 0)
- role = ROLE_TARGET;
- ahd_compile_devinfo(devinfo, our_id, SCB_GET_TARGET(ahd, scb),
- SCB_GET_LUN(scb), SCB_GET_CHANNEL(ahd, scb), role);
-}
-
-
-/************************ Message Phase Processing ****************************/
-/*
- * When an initiator transaction with the MK_MESSAGE flag either reconnects
- * or enters the initial message out phase, we are interrupted. Fill our
- * outgoing message buffer with the appropriate message and beging handing
- * the message phase(s) manually.
- */
-static void
-ahd_setup_initiator_msgout(struct ahd_softc *ahd, struct ahd_devinfo *devinfo,
- struct scb *scb)
-{
- /*
- * To facilitate adding multiple messages together,
- * each routine should increment the index and len
- * variables instead of setting them explicitly.
- */
- ahd->msgout_index = 0;
- ahd->msgout_len = 0;
-
- if (ahd_currently_packetized(ahd))
- ahd->msg_flags |= MSG_FLAG_PACKETIZED;
-
- if (ahd->send_msg_perror
- && ahd_inb(ahd, MSG_OUT) == HOST_MSG) {
- ahd->msgout_buf[ahd->msgout_index++] = ahd->send_msg_perror;
- ahd->msgout_len++;
- ahd->msg_type = MSG_TYPE_INITIATOR_MSGOUT;
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MESSAGES) != 0)
- printf("Setting up for Parity Error delivery\n");
-#endif
- return;
- } else if (scb == NULL) {
- printf("%s: WARNING. No pending message for "
- "I_T msgin. Issuing NO-OP\n", ahd_name(ahd));
- ahd->msgout_buf[ahd->msgout_index++] = MSG_NOOP;
- ahd->msgout_len++;
- ahd->msg_type = MSG_TYPE_INITIATOR_MSGOUT;
- return;
- }
-
- if ((scb->flags & SCB_DEVICE_RESET) == 0
- && (scb->flags & SCB_PACKETIZED) == 0
- && ahd_inb(ahd, MSG_OUT) == MSG_IDENTIFYFLAG) {
- u_int identify_msg;
-
- identify_msg = MSG_IDENTIFYFLAG | SCB_GET_LUN(scb);
- if ((scb->hscb->control & DISCENB) != 0)
- identify_msg |= MSG_IDENTIFY_DISCFLAG;
- ahd->msgout_buf[ahd->msgout_index++] = identify_msg;
- ahd->msgout_len++;
-
- if ((scb->hscb->control & TAG_ENB) != 0) {
- ahd->msgout_buf[ahd->msgout_index++] =
- scb->hscb->control & (TAG_ENB|SCB_TAG_TYPE);
- ahd->msgout_buf[ahd->msgout_index++] = SCB_GET_TAG(scb);
- ahd->msgout_len += 2;
- }
- }
-
- if (scb->flags & SCB_DEVICE_RESET) {
- ahd->msgout_buf[ahd->msgout_index++] = MSG_BUS_DEV_RESET;
- ahd->msgout_len++;
- ahd_print_path(ahd, scb);
- printf("Bus Device Reset Message Sent\n");
- /*
- * Clear our selection hardware in advance of
- * the busfree. We may have an entry in the waiting
- * Q for this target, and we don't want to go about
- * selecting while we handle the busfree and blow it
- * away.
- */
- ahd_outb(ahd, SCSISEQ0, 0);
- } else if ((scb->flags & SCB_ABORT) != 0) {
-
- if ((scb->hscb->control & TAG_ENB) != 0) {
- ahd->msgout_buf[ahd->msgout_index++] = MSG_ABORT_TAG;
- } else {
- ahd->msgout_buf[ahd->msgout_index++] = MSG_ABORT;
- }
- ahd->msgout_len++;
- ahd_print_path(ahd, scb);
- printf("Abort%s Message Sent\n",
- (scb->hscb->control & TAG_ENB) != 0 ? " Tag" : "");
- /*
- * Clear our selection hardware in advance of
- * the busfree. We may have an entry in the waiting
- * Q for this target, and we don't want to go about
- * selecting while we handle the busfree and blow it
- * away.
- */
- ahd_outb(ahd, SCSISEQ0, 0);
- } else if ((scb->flags & (SCB_AUTO_NEGOTIATE|SCB_NEGOTIATE)) != 0) {
- ahd_build_transfer_msg(ahd, devinfo);
- /*
- * Clear our selection hardware in advance of potential
- * PPR IU status change busfree. We may have an entry in
- * the waiting Q for this target, and we don't want to go
- * about selecting while we handle the busfree and blow
- * it away.
- */
- ahd_outb(ahd, SCSISEQ0, 0);
- } else {
- printf("ahd_intr: AWAITING_MSG for an SCB that "
- "does not have a waiting message\n");
- printf("SCSIID = %x, target_mask = %x\n", scb->hscb->scsiid,
- devinfo->target_mask);
- panic("SCB = %d, SCB Control = %x:%x, MSG_OUT = %x "
- "SCB flags = %x", SCB_GET_TAG(scb), scb->hscb->control,
- ahd_inb(ahd, SCB_CONTROL), ahd_inb(ahd, MSG_OUT),
- scb->flags);
- }
-
- /*
- * Clear the MK_MESSAGE flag from the SCB so we aren't
- * asked to send this message again.
- */
- ahd_outb(ahd, SCB_CONTROL,
- ahd_inb_scbram(ahd, SCB_CONTROL) & ~MK_MESSAGE);
- scb->hscb->control &= ~MK_MESSAGE;
- ahd->msgout_index = 0;
- ahd->msg_type = MSG_TYPE_INITIATOR_MSGOUT;
-}
-
-/*
- * Build an appropriate transfer negotiation message for the
- * currently active target.
- */
-static void
-ahd_build_transfer_msg(struct ahd_softc *ahd, struct ahd_devinfo *devinfo)
-{
- /*
- * We need to initiate transfer negotiations.
- * If our current and goal settings are identical,
- * we want to renegotiate due to a check condition.
- */
- struct ahd_initiator_tinfo *tinfo;
- struct ahd_tmode_tstate *tstate;
- int dowide;
- int dosync;
- int doppr;
- u_int period;
- u_int ppr_options;
- u_int offset;
-
- tinfo = ahd_fetch_transinfo(ahd, devinfo->channel, devinfo->our_scsiid,
- devinfo->target, &tstate);
- /*
- * Filter our period based on the current connection.
- * If we can't perform DT transfers on this segment (not in LVD
- * mode for instance), then our decision to issue a PPR message
- * may change.
- */
- period = tinfo->goal.period;
- ppr_options = tinfo->goal.ppr_options;
- /* Target initiated PPR is not allowed in the SCSI spec */
- if (devinfo->role == ROLE_TARGET)
- ppr_options = 0;
- ahd_devlimited_syncrate(ahd, tinfo, &period,
- &ppr_options, devinfo->role);
- dowide = tinfo->curr.width != tinfo->goal.width;
- dosync = tinfo->curr.period != period;
- /*
- * Only use PPR if we have options that need it, even if the device
- * claims to support it. There might be an expander in the way
- * that doesn't.
- */
- doppr = ppr_options != 0;
-
- if (!dowide && !dosync && !doppr) {
- dowide = tinfo->goal.width != MSG_EXT_WDTR_BUS_8_BIT;
- dosync = tinfo->goal.period != 0;
- }
-
- if (!dowide && !dosync && !doppr) {
- /*
- * Force async with a WDTR message if we have a wide bus,
- * or just issue an SDTR with a 0 offset.
- */
- if ((ahd->features & AHD_WIDE) != 0)
- dowide = 1;
- else
- dosync = 1;
-
- if (bootverbose) {
- ahd_print_devinfo(ahd, devinfo);
- printf("Ensuring async\n");
- }
- }
- /* Target initiated PPR is not allowed in the SCSI spec */
- if (devinfo->role == ROLE_TARGET)
- doppr = 0;
-
- /*
- * Both the PPR message and SDTR message require the
- * goal syncrate to be limited to what the target device
- * is capable of handling (based on whether an LVD->SE
- * expander is on the bus), so combine these two cases.
- * Regardless, guarantee that if we are using WDTR and SDTR
- * messages that WDTR comes first.
- */
- if (doppr || (dosync && !dowide)) {
-
- offset = tinfo->goal.offset;
- ahd_validate_offset(ahd, tinfo, period, &offset,
- doppr ? tinfo->goal.width
- : tinfo->curr.width,
- devinfo->role);
- if (doppr) {
- ahd_construct_ppr(ahd, devinfo, period, offset,
- tinfo->goal.width, ppr_options);
- } else {
- ahd_construct_sdtr(ahd, devinfo, period, offset);
- }
- } else {
- ahd_construct_wdtr(ahd, devinfo, tinfo->goal.width);
- }
-}
-
-/*
- * Build a synchronous negotiation message in our message
- * buffer based on the input parameters.
- */
-static void
-ahd_construct_sdtr(struct ahd_softc *ahd, struct ahd_devinfo *devinfo,
- u_int period, u_int offset)
-{
- if (offset == 0)
- period = AHD_ASYNC_XFER_PERIOD;
- ahd->msgout_buf[ahd->msgout_index++] = MSG_EXTENDED;
- ahd->msgout_buf[ahd->msgout_index++] = MSG_EXT_SDTR_LEN;
- ahd->msgout_buf[ahd->msgout_index++] = MSG_EXT_SDTR;
- ahd->msgout_buf[ahd->msgout_index++] = period;
- ahd->msgout_buf[ahd->msgout_index++] = offset;
- ahd->msgout_len += 5;
- if (bootverbose) {
- printf("(%s:%c:%d:%d): Sending SDTR period %x, offset %x\n",
- ahd_name(ahd), devinfo->channel, devinfo->target,
- devinfo->lun, period, offset);
- }
-}
-
-/*
- * Build a wide negotiateion message in our message
- * buffer based on the input parameters.
- */
-static void
-ahd_construct_wdtr(struct ahd_softc *ahd, struct ahd_devinfo *devinfo,
- u_int bus_width)
-{
- ahd->msgout_buf[ahd->msgout_index++] = MSG_EXTENDED;
- ahd->msgout_buf[ahd->msgout_index++] = MSG_EXT_WDTR_LEN;
- ahd->msgout_buf[ahd->msgout_index++] = MSG_EXT_WDTR;
- ahd->msgout_buf[ahd->msgout_index++] = bus_width;
- ahd->msgout_len += 4;
- if (bootverbose) {
- printf("(%s:%c:%d:%d): Sending WDTR %x\n",
- ahd_name(ahd), devinfo->channel, devinfo->target,
- devinfo->lun, bus_width);
- }
-}
-
-/*
- * Build a parallel protocol request message in our message
- * buffer based on the input parameters.
- */
-static void
-ahd_construct_ppr(struct ahd_softc *ahd, struct ahd_devinfo *devinfo,
- u_int period, u_int offset, u_int bus_width,
- u_int ppr_options)
-{
- /*
- * Always request precompensation from
- * the other target if we are running
- * at paced syncrates.
- */
- if (period <= AHD_SYNCRATE_PACED)
- ppr_options |= MSG_EXT_PPR_PCOMP_EN;
- if (offset == 0)
- period = AHD_ASYNC_XFER_PERIOD;
- ahd->msgout_buf[ahd->msgout_index++] = MSG_EXTENDED;
- ahd->msgout_buf[ahd->msgout_index++] = MSG_EXT_PPR_LEN;
- ahd->msgout_buf[ahd->msgout_index++] = MSG_EXT_PPR;
- ahd->msgout_buf[ahd->msgout_index++] = period;
- ahd->msgout_buf[ahd->msgout_index++] = 0;
- ahd->msgout_buf[ahd->msgout_index++] = offset;
- ahd->msgout_buf[ahd->msgout_index++] = bus_width;
- ahd->msgout_buf[ahd->msgout_index++] = ppr_options;
- ahd->msgout_len += 8;
- if (bootverbose) {
- printf("(%s:%c:%d:%d): Sending PPR bus_width %x, period %x, "
- "offset %x, ppr_options %x\n", ahd_name(ahd),
- devinfo->channel, devinfo->target, devinfo->lun,
- bus_width, period, offset, ppr_options);
- }
-}
-
-/*
- * Clear any active message state.
- */
-static void
-ahd_clear_msg_state(struct ahd_softc *ahd)
-{
- ahd_mode_state saved_modes;
-
- saved_modes = ahd_save_modes(ahd);
- ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
- ahd->send_msg_perror = 0;
- ahd->msg_flags = MSG_FLAG_NONE;
- ahd->msgout_len = 0;
- ahd->msgin_index = 0;
- ahd->msg_type = MSG_TYPE_NONE;
- if ((ahd_inb(ahd, SCSISIGO) & ATNO) != 0) {
- /*
- * The target didn't care to respond to our
- * message request, so clear ATN.
- */
- ahd_outb(ahd, CLRSINT1, CLRATNO);
- }
- ahd_outb(ahd, MSG_OUT, MSG_NOOP);
- ahd_outb(ahd, SEQ_FLAGS2,
- ahd_inb(ahd, SEQ_FLAGS2) & ~TARGET_MSG_PENDING);
- ahd_restore_modes(ahd, saved_modes);
-}
-
-/*
- * Manual message loop handler.
- */
-static void
-ahd_handle_message_phase(struct ahd_softc *ahd)
-{
- struct ahd_devinfo devinfo;
- u_int bus_phase;
- int end_session;
-
- ahd_fetch_devinfo(ahd, &devinfo);
- end_session = FALSE;
- bus_phase = ahd_inb(ahd, LASTPHASE);
-
- if ((ahd_inb(ahd, LQISTAT2) & LQIPHASE_OUTPKT) != 0) {
- printf("LQIRETRY for LQIPHASE_OUTPKT\n");
- ahd_outb(ahd, LQCTL2, LQIRETRY);
- }
-reswitch:
- switch (ahd->msg_type) {
- case MSG_TYPE_INITIATOR_MSGOUT:
- {
- int lastbyte;
- int phasemis;
- int msgdone;
-
- if (ahd->msgout_len == 0 && ahd->send_msg_perror == 0)
- panic("HOST_MSG_LOOP interrupt with no active message");
-
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) {
- ahd_print_devinfo(ahd, &devinfo);
- printf("INITIATOR_MSG_OUT");
- }
-#endif
- phasemis = bus_phase != P_MESGOUT;
- if (phasemis) {
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) {
- printf(" PHASEMIS %s\n",
- ahd_lookup_phase_entry(bus_phase)
- ->phasemsg);
- }
-#endif
- if (bus_phase == P_MESGIN) {
- /*
- * Change gears and see if
- * this messages is of interest to
- * us or should be passed back to
- * the sequencer.
- */
- ahd_outb(ahd, CLRSINT1, CLRATNO);
- ahd->send_msg_perror = 0;
- ahd->msg_type = MSG_TYPE_INITIATOR_MSGIN;
- ahd->msgin_index = 0;
- goto reswitch;
- }
- end_session = TRUE;
- break;
- }
-
- if (ahd->send_msg_perror) {
- ahd_outb(ahd, CLRSINT1, CLRATNO);
- ahd_outb(ahd, CLRSINT1, CLRREQINIT);
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MESSAGES) != 0)
- printf(" byte 0x%x\n", ahd->send_msg_perror);
-#endif
- /*
- * If we are notifying the target of a CRC error
- * during packetized operations, the target is
- * within its rights to acknowledge our message
- * with a busfree.
- */
- if ((ahd->msg_flags & MSG_FLAG_PACKETIZED) != 0
- && ahd->send_msg_perror == MSG_INITIATOR_DET_ERR)
- ahd->msg_flags |= MSG_FLAG_EXPECT_IDE_BUSFREE;
-
- ahd_outb(ahd, RETURN_2, ahd->send_msg_perror);
- ahd_outb(ahd, RETURN_1, CONT_MSG_LOOP_WRITE);
- break;
- }
-
- msgdone = ahd->msgout_index == ahd->msgout_len;
- if (msgdone) {
- /*
- * The target has requested a retry.
- * Re-assert ATN, reset our message index to
- * 0, and try again.
- */
- ahd->msgout_index = 0;
- ahd_assert_atn(ahd);
- }
-
- lastbyte = ahd->msgout_index == (ahd->msgout_len - 1);
- if (lastbyte) {
- /* Last byte is signified by dropping ATN */
- ahd_outb(ahd, CLRSINT1, CLRATNO);
- }
-
- /*
- * Clear our interrupt status and present
- * the next byte on the bus.
- */
- ahd_outb(ahd, CLRSINT1, CLRREQINIT);
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MESSAGES) != 0)
- printf(" byte 0x%x\n",
- ahd->msgout_buf[ahd->msgout_index]);
-#endif
- ahd_outb(ahd, RETURN_2, ahd->msgout_buf[ahd->msgout_index++]);
- ahd_outb(ahd, RETURN_1, CONT_MSG_LOOP_WRITE);
- break;
- }
- case MSG_TYPE_INITIATOR_MSGIN:
- {
- int phasemis;
- int message_done;
-
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) {
- ahd_print_devinfo(ahd, &devinfo);
- printf("INITIATOR_MSG_IN");
- }
-#endif
- phasemis = bus_phase != P_MESGIN;
- if (phasemis) {
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) {
- printf(" PHASEMIS %s\n",
- ahd_lookup_phase_entry(bus_phase)
- ->phasemsg);
- }
-#endif
- ahd->msgin_index = 0;
- if (bus_phase == P_MESGOUT
- && (ahd->send_msg_perror != 0
- || (ahd->msgout_len != 0
- && ahd->msgout_index == 0))) {
- ahd->msg_type = MSG_TYPE_INITIATOR_MSGOUT;
- goto reswitch;
- }
- end_session = TRUE;
- break;
- }
-
- /* Pull the byte in without acking it */
- ahd->msgin_buf[ahd->msgin_index] = ahd_inb(ahd, SCSIBUS);
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MESSAGES) != 0)
- printf(" byte 0x%x\n",
- ahd->msgin_buf[ahd->msgin_index]);
-#endif
-
- message_done = ahd_parse_msg(ahd, &devinfo);
-
- if (message_done) {
- /*
- * Clear our incoming message buffer in case there
- * is another message following this one.
- */
- ahd->msgin_index = 0;
-
- /*
- * If this message illicited a response,
- * assert ATN so the target takes us to the
- * message out phase.
- */
- if (ahd->msgout_len != 0) {
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MESSAGES) != 0) {
- ahd_print_devinfo(ahd, &devinfo);
- printf("Asserting ATN for response\n");
- }
-#endif
- ahd_assert_atn(ahd);
- }
- } else
- ahd->msgin_index++;
-
- if (message_done == MSGLOOP_TERMINATED) {
- end_session = TRUE;
- } else {
- /* Ack the byte */
- ahd_outb(ahd, CLRSINT1, CLRREQINIT);
- ahd_outb(ahd, RETURN_1, CONT_MSG_LOOP_READ);
- }
- break;
- }
- case MSG_TYPE_TARGET_MSGIN:
- {
- int msgdone;
- int msgout_request;
-
- /*
- * By default, the message loop will continue.
- */
- ahd_outb(ahd, RETURN_1, CONT_MSG_LOOP_TARG);
-
- if (ahd->msgout_len == 0)
- panic("Target MSGIN with no active message");
-
- /*
- * If we interrupted a mesgout session, the initiator
- * will not know this until our first REQ. So, we
- * only honor mesgout requests after we've sent our
- * first byte.
- */
- if ((ahd_inb(ahd, SCSISIGI) & ATNI) != 0
- && ahd->msgout_index > 0)
- msgout_request = TRUE;
- else
- msgout_request = FALSE;
-
- if (msgout_request) {
-
- /*
- * Change gears and see if
- * this messages is of interest to
- * us or should be passed back to
- * the sequencer.
- */
- ahd->msg_type = MSG_TYPE_TARGET_MSGOUT;
- ahd_outb(ahd, SCSISIGO, P_MESGOUT | BSYO);
- ahd->msgin_index = 0;
- /* Dummy read to REQ for first byte */
- ahd_inb(ahd, SCSIDAT);
- ahd_outb(ahd, SXFRCTL0,
- ahd_inb(ahd, SXFRCTL0) | SPIOEN);
- break;
- }
-
- msgdone = ahd->msgout_index == ahd->msgout_len;
- if (msgdone) {
- ahd_outb(ahd, SXFRCTL0,
- ahd_inb(ahd, SXFRCTL0) & ~SPIOEN);
- end_session = TRUE;
- break;
- }
-
- /*
- * Present the next byte on the bus.
- */
- ahd_outb(ahd, SXFRCTL0, ahd_inb(ahd, SXFRCTL0) | SPIOEN);
- ahd_outb(ahd, SCSIDAT, ahd->msgout_buf[ahd->msgout_index++]);
- break;
- }
- case MSG_TYPE_TARGET_MSGOUT:
- {
- int lastbyte;
- int msgdone;
-
- /*
- * By default, the message loop will continue.
- */
- ahd_outb(ahd, RETURN_1, CONT_MSG_LOOP_TARG);
-
- /*
- * The initiator signals that this is
- * the last byte by dropping ATN.
- */
- lastbyte = (ahd_inb(ahd, SCSISIGI) & ATNI) == 0;
-
- /*
- * Read the latched byte, but turn off SPIOEN first
- * so that we don't inadvertently cause a REQ for the
- * next byte.
- */
- ahd_outb(ahd, SXFRCTL0, ahd_inb(ahd, SXFRCTL0) & ~SPIOEN);
- ahd->msgin_buf[ahd->msgin_index] = ahd_inb(ahd, SCSIDAT);
- msgdone = ahd_parse_msg(ahd, &devinfo);
- if (msgdone == MSGLOOP_TERMINATED) {
- /*
- * The message is *really* done in that it caused
- * us to go to bus free. The sequencer has already
- * been reset at this point, so pull the ejection
- * handle.
- */
- return;
- }
-
- ahd->msgin_index++;
-
- /*
- * XXX Read spec about initiator dropping ATN too soon
- * and use msgdone to detect it.
- */
- if (msgdone == MSGLOOP_MSGCOMPLETE) {
- ahd->msgin_index = 0;
-
- /*
- * If this message illicited a response, transition
- * to the Message in phase and send it.
- */
- if (ahd->msgout_len != 0) {
- ahd_outb(ahd, SCSISIGO, P_MESGIN | BSYO);
- ahd_outb(ahd, SXFRCTL0,
- ahd_inb(ahd, SXFRCTL0) | SPIOEN);
- ahd->msg_type = MSG_TYPE_TARGET_MSGIN;
- ahd->msgin_index = 0;
- break;
- }
- }
-
- if (lastbyte)
- end_session = TRUE;
- else {
- /* Ask for the next byte. */
- ahd_outb(ahd, SXFRCTL0,
- ahd_inb(ahd, SXFRCTL0) | SPIOEN);
- }
-
- break;
- }
- default:
- panic("Unknown REQINIT message type");
- }
-
- if (end_session) {
- if ((ahd->msg_flags & MSG_FLAG_PACKETIZED) != 0) {
- printf("%s: Returning to Idle Loop\n",
- ahd_name(ahd));
- ahd_outb(ahd, LASTPHASE, P_BUSFREE);
- ahd_clear_msg_state(ahd);
- ahd_outb(ahd, SEQCTL0, FASTMODE|SEQRESET);
- } else {
- ahd_clear_msg_state(ahd);
- ahd_outb(ahd, RETURN_1, EXIT_MSG_LOOP);
- }
- }
-}
-
-/*
- * See if we sent a particular extended message to the target.
- * If "full" is true, return true only if the target saw the full
- * message. If "full" is false, return true if the target saw at
- * least the first byte of the message.
- */
-static int
-ahd_sent_msg(struct ahd_softc *ahd, ahd_msgtype type, u_int msgval, int full)
-{
- int found;
- u_int index;
-
- found = FALSE;
- index = 0;
-
- while (index < ahd->msgout_len) {
- if (ahd->msgout_buf[index] == MSG_EXTENDED) {
- u_int end_index;
-
- end_index = index + 1 + ahd->msgout_buf[index + 1];
- if (ahd->msgout_buf[index+2] == msgval
- && type == AHDMSG_EXT) {
-
- if (full) {
- if (ahd->msgout_index > end_index)
- found = TRUE;
- } else if (ahd->msgout_index > index)
- found = TRUE;
- }
- index = end_index;
- } else if (ahd->msgout_buf[index] >= MSG_SIMPLE_TASK
- && ahd->msgout_buf[index] <= MSG_IGN_WIDE_RESIDUE) {
-
- /* Skip tag type and tag id or residue param*/
- index += 2;
- } else {
- /* Single byte message */
- if (type == AHDMSG_1B
- && ahd->msgout_index > index
- && (ahd->msgout_buf[index] == msgval
- || ((ahd->msgout_buf[index] & MSG_IDENTIFYFLAG) != 0
- && msgval == MSG_IDENTIFYFLAG)))
- found = TRUE;
- index++;
- }
-
- if (found)
- break;
- }
- return (found);
-}
-
-/*
- * Wait for a complete incoming message, parse it, and respond accordingly.
- */
-static int
-ahd_parse_msg(struct ahd_softc *ahd, struct ahd_devinfo *devinfo)
-{
- struct ahd_initiator_tinfo *tinfo;
- struct ahd_tmode_tstate *tstate;
- int reject;
- int done;
- int response;
-
- done = MSGLOOP_IN_PROG;
- response = FALSE;
- reject = FALSE;
- tinfo = ahd_fetch_transinfo(ahd, devinfo->channel, devinfo->our_scsiid,
- devinfo->target, &tstate);
-
- /*
- * Parse as much of the message as is availible,
- * rejecting it if we don't support it. When
- * the entire message is availible and has been
- * handled, return MSGLOOP_MSGCOMPLETE, indicating
- * that we have parsed an entire message.
- *
- * In the case of extended messages, we accept the length
- * byte outright and perform more checking once we know the
- * extended message type.
- */
- switch (ahd->msgin_buf[0]) {
- case MSG_DISCONNECT:
- case MSG_SAVEDATAPOINTER:
- case MSG_CMDCOMPLETE:
- case MSG_RESTOREPOINTERS:
- case MSG_IGN_WIDE_RESIDUE:
- /*
- * End our message loop as these are messages
- * the sequencer handles on its own.
- */
- done = MSGLOOP_TERMINATED;
- break;
- case MSG_MESSAGE_REJECT:
- response = ahd_handle_msg_reject(ahd, devinfo);
- /* FALLTHROUGH */
- case MSG_NOOP:
- done = MSGLOOP_MSGCOMPLETE;
- break;
- case MSG_EXTENDED:
- {
- /* Wait for enough of the message to begin validation */
- if (ahd->msgin_index < 2)
- break;
- switch (ahd->msgin_buf[2]) {
- case MSG_EXT_SDTR:
- {
- u_int period;
- u_int ppr_options;
- u_int offset;
- u_int saved_offset;
-
- if (ahd->msgin_buf[1] != MSG_EXT_SDTR_LEN) {
- reject = TRUE;
- break;
- }
-
- /*
- * Wait until we have both args before validating
- * and acting on this message.
- *
- * Add one to MSG_EXT_SDTR_LEN to account for
- * the extended message preamble.
- */
- if (ahd->msgin_index < (MSG_EXT_SDTR_LEN + 1))
- break;
-
- period = ahd->msgin_buf[3];
- ppr_options = 0;
- saved_offset = offset = ahd->msgin_buf[4];
- ahd_devlimited_syncrate(ahd, tinfo, &period,
- &ppr_options, devinfo->role);
- ahd_validate_offset(ahd, tinfo, period, &offset,
- tinfo->curr.width, devinfo->role);
- if (bootverbose) {
- printf("(%s:%c:%d:%d): Received "
- "SDTR period %x, offset %x\n\t"
- "Filtered to period %x, offset %x\n",
- ahd_name(ahd), devinfo->channel,
- devinfo->target, devinfo->lun,
- ahd->msgin_buf[3], saved_offset,
- period, offset);
- }
- ahd_set_syncrate(ahd, devinfo, period,
- offset, ppr_options,
- AHD_TRANS_ACTIVE|AHD_TRANS_GOAL,
- /*paused*/TRUE);
-
- /*
- * See if we initiated Sync Negotiation
- * and didn't have to fall down to async
- * transfers.
- */
- if (ahd_sent_msg(ahd, AHDMSG_EXT, MSG_EXT_SDTR, TRUE)) {
- /* We started it */
- if (saved_offset != offset) {
- /* Went too low - force async */
- reject = TRUE;
- }
- } else {
- /*
- * Send our own SDTR in reply
- */
- if (bootverbose
- && devinfo->role == ROLE_INITIATOR) {
- printf("(%s:%c:%d:%d): Target "
- "Initiated SDTR\n",
- ahd_name(ahd), devinfo->channel,
- devinfo->target, devinfo->lun);
- }
- ahd->msgout_index = 0;
- ahd->msgout_len = 0;
- ahd_construct_sdtr(ahd, devinfo,
- period, offset);
- ahd->msgout_index = 0;
- response = TRUE;
- }
- done = MSGLOOP_MSGCOMPLETE;
- break;
- }
- case MSG_EXT_WDTR:
- {
- u_int bus_width;
- u_int saved_width;
- u_int sending_reply;
-
- sending_reply = FALSE;
- if (ahd->msgin_buf[1] != MSG_EXT_WDTR_LEN) {
- reject = TRUE;
- break;
- }
-
- /*
- * Wait until we have our arg before validating
- * and acting on this message.
- *
- * Add one to MSG_EXT_WDTR_LEN to account for
- * the extended message preamble.
- */
- if (ahd->msgin_index < (MSG_EXT_WDTR_LEN + 1))
- break;
-
- bus_width = ahd->msgin_buf[3];
- saved_width = bus_width;
- ahd_validate_width(ahd, tinfo, &bus_width,
- devinfo->role);
- if (bootverbose) {
- printf("(%s:%c:%d:%d): Received WDTR "
- "%x filtered to %x\n",
- ahd_name(ahd), devinfo->channel,
- devinfo->target, devinfo->lun,
- saved_width, bus_width);
- }
-
- if (ahd_sent_msg(ahd, AHDMSG_EXT, MSG_EXT_WDTR, TRUE)) {
- /*
- * Don't send a WDTR back to the
- * target, since we asked first.
- * If the width went higher than our
- * request, reject it.
- */
- if (saved_width > bus_width) {
- reject = TRUE;
- printf("(%s:%c:%d:%d): requested %dBit "
- "transfers. Rejecting...\n",
- ahd_name(ahd), devinfo->channel,
- devinfo->target, devinfo->lun,
- 8 * (0x01 << bus_width));
- bus_width = 0;
- }
- } else {
- /*
- * Send our own WDTR in reply
- */
- if (bootverbose
- && devinfo->role == ROLE_INITIATOR) {
- printf("(%s:%c:%d:%d): Target "
- "Initiated WDTR\n",
- ahd_name(ahd), devinfo->channel,
- devinfo->target, devinfo->lun);
- }
- ahd->msgout_index = 0;
- ahd->msgout_len = 0;
- ahd_construct_wdtr(ahd, devinfo, bus_width);
- ahd->msgout_index = 0;
- response = TRUE;
- sending_reply = TRUE;
- }
- ahd_set_width(ahd, devinfo, bus_width,
- AHD_TRANS_ACTIVE|AHD_TRANS_GOAL,
- /*paused*/TRUE);
- /* After a wide message, we are async */
- ahd_set_syncrate(ahd, devinfo, /*period*/0,
- /*offset*/0, /*ppr_options*/0,
- AHD_TRANS_ACTIVE, /*paused*/TRUE);
- if (sending_reply == FALSE && reject == FALSE) {
-
- if (tinfo->goal.offset) {
- ahd->msgout_index = 0;
- ahd->msgout_len = 0;
- ahd_build_transfer_msg(ahd, devinfo);
- ahd->msgout_index = 0;
- response = TRUE;
- }
- }
- done = MSGLOOP_MSGCOMPLETE;
- break;
- }
- case MSG_EXT_PPR:
- {
- u_int period;
- u_int offset;
- u_int bus_width;
- u_int ppr_options;
- u_int saved_width;
- u_int saved_offset;
- u_int saved_ppr_options;
-
- if (ahd->msgin_buf[1] != MSG_EXT_PPR_LEN) {
- reject = TRUE;
- break;
- }
-
- /*
- * Wait until we have all args before validating
- * and acting on this message.
- *
- * Add one to MSG_EXT_PPR_LEN to account for
- * the extended message preamble.
- */
- if (ahd->msgin_index < (MSG_EXT_PPR_LEN + 1))
- break;
-
- period = ahd->msgin_buf[3];
- offset = ahd->msgin_buf[5];
- bus_width = ahd->msgin_buf[6];
- saved_width = bus_width;
- ppr_options = ahd->msgin_buf[7];
- /*
- * According to the spec, a DT only
- * period factor with no DT option
- * set implies async.
- */
- if ((ppr_options & MSG_EXT_PPR_DT_REQ) == 0
- && period <= 9)
- offset = 0;
- saved_ppr_options = ppr_options;
- saved_offset = offset;
-
- /*
- * Transfer options are only available if we
- * are negotiating wide.
- */
- if (bus_width == 0)
- ppr_options &= MSG_EXT_PPR_QAS_REQ;
-
- ahd_validate_width(ahd, tinfo, &bus_width,
- devinfo->role);
- ahd_devlimited_syncrate(ahd, tinfo, &period,
- &ppr_options, devinfo->role);
- ahd_validate_offset(ahd, tinfo, period, &offset,
- bus_width, devinfo->role);
-
- if (ahd_sent_msg(ahd, AHDMSG_EXT, MSG_EXT_PPR, TRUE)) {
- /*
- * If we are unable to do any of the
- * requested options (we went too low),
- * then we'll have to reject the message.
- */
- if (saved_width > bus_width
- || saved_offset != offset
- || saved_ppr_options != ppr_options) {
- reject = TRUE;
- period = 0;
- offset = 0;
- bus_width = 0;
- ppr_options = 0;
- }
- } else {
- if (devinfo->role != ROLE_TARGET)
- printf("(%s:%c:%d:%d): Target "
- "Initiated PPR\n",
- ahd_name(ahd), devinfo->channel,
- devinfo->target, devinfo->lun);
- else
- printf("(%s:%c:%d:%d): Initiator "
- "Initiated PPR\n",
- ahd_name(ahd), devinfo->channel,
- devinfo->target, devinfo->lun);
- ahd->msgout_index = 0;
- ahd->msgout_len = 0;
- ahd_construct_ppr(ahd, devinfo, period, offset,
- bus_width, ppr_options);
- ahd->msgout_index = 0;
- response = TRUE;
- }
- if (bootverbose) {
- printf("(%s:%c:%d:%d): Received PPR width %x, "
- "period %x, offset %x,options %x\n"
- "\tFiltered to width %x, period %x, "
- "offset %x, options %x\n",
- ahd_name(ahd), devinfo->channel,
- devinfo->target, devinfo->lun,
- saved_width, ahd->msgin_buf[3],
- saved_offset, saved_ppr_options,
- bus_width, period, offset, ppr_options);
- }
- ahd_set_width(ahd, devinfo, bus_width,
- AHD_TRANS_ACTIVE|AHD_TRANS_GOAL,
- /*paused*/TRUE);
- ahd_set_syncrate(ahd, devinfo, period,
- offset, ppr_options,
- AHD_TRANS_ACTIVE|AHD_TRANS_GOAL,
- /*paused*/TRUE);
-
- done = MSGLOOP_MSGCOMPLETE;
- break;
- }
- default:
- /* Unknown extended message. Reject it. */
- reject = TRUE;
- break;
- }
- break;
- }
-#ifdef AHD_TARGET_MODE
- case MSG_BUS_DEV_RESET:
- ahd_handle_devreset(ahd, devinfo, CAM_LUN_WILDCARD,
- CAM_BDR_SENT,
- "Bus Device Reset Received",
- /*verbose_level*/0);
- ahd_restart(ahd);
- done = MSGLOOP_TERMINATED;
- break;
- case MSG_ABORT_TAG:
- case MSG_ABORT:
- case MSG_CLEAR_QUEUE:
- {
- int tag;
-
- /* Target mode messages */
- if (devinfo->role != ROLE_TARGET) {
- reject = TRUE;
- break;
- }
- tag = SCB_LIST_NULL;
- if (ahd->msgin_buf[0] == MSG_ABORT_TAG)
- tag = ahd_inb(ahd, INITIATOR_TAG);
- ahd_abort_scbs(ahd, devinfo->target, devinfo->channel,
- devinfo->lun, tag, ROLE_TARGET,
- CAM_REQ_ABORTED);
-
- tstate = ahd->enabled_targets[devinfo->our_scsiid];
- if (tstate != NULL) {
- struct ahd_tmode_lstate* lstate;
-
- lstate = tstate->enabled_luns[devinfo->lun];
- if (lstate != NULL) {
- ahd_queue_lstate_event(ahd, lstate,
- devinfo->our_scsiid,
- ahd->msgin_buf[0],
- /*arg*/tag);
- ahd_send_lstate_events(ahd, lstate);
- }
- }
- ahd_restart(ahd);
- done = MSGLOOP_TERMINATED;
- break;
- }
-#endif
- case MSG_QAS_REQUEST:
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MESSAGES) != 0)
- printf("%s: QAS request. SCSISIGI == 0x%x\n",
- ahd_name(ahd), ahd_inb(ahd, SCSISIGI));
-#endif
- ahd->msg_flags |= MSG_FLAG_EXPECT_QASREJ_BUSFREE;
- /* FALLTHROUGH */
- case MSG_TERM_IO_PROC:
- default:
- reject = TRUE;
- break;
- }
-
- if (reject) {
- /*
- * Setup to reject the message.
- */
- ahd->msgout_index = 0;
- ahd->msgout_len = 1;
- ahd->msgout_buf[0] = MSG_MESSAGE_REJECT;
- done = MSGLOOP_MSGCOMPLETE;
- response = TRUE;
- }
-
- if (done != MSGLOOP_IN_PROG && !response)
- /* Clear the outgoing message buffer */
- ahd->msgout_len = 0;
-
- return (done);
-}
-
-/*
- * Process a message reject message.
- */
-static int
-ahd_handle_msg_reject(struct ahd_softc *ahd, struct ahd_devinfo *devinfo)
-{
- /*
- * What we care about here is if we had an
- * outstanding SDTR or WDTR message for this
- * target. If we did, this is a signal that
- * the target is refusing negotiation.
- */
- struct scb *scb;
- struct ahd_initiator_tinfo *tinfo;
- struct ahd_tmode_tstate *tstate;
- u_int scb_index;
- u_int last_msg;
- int response = 0;
-
- scb_index = ahd_get_scbptr(ahd);
- scb = ahd_lookup_scb(ahd, scb_index);
- tinfo = ahd_fetch_transinfo(ahd, devinfo->channel,
- devinfo->our_scsiid,
- devinfo->target, &tstate);
- /* Might be necessary */
- last_msg = ahd_inb(ahd, LAST_MSG);
-
- if (ahd_sent_msg(ahd, AHDMSG_EXT, MSG_EXT_PPR, /*full*/FALSE)) {
- if (ahd_sent_msg(ahd, AHDMSG_EXT, MSG_EXT_PPR, /*full*/TRUE)
- && tinfo->goal.period <= AHD_SYNCRATE_PACED) {
- /*
- * Target may not like our SPI-4 PPR Options.
- * Attempt to negotiate 80MHz which will turn
- * off these options.
- */
- if (bootverbose) {
- printf("(%s:%c:%d:%d): PPR Rejected. "
- "Trying simple U160 PPR\n",
- ahd_name(ahd), devinfo->channel,
- devinfo->target, devinfo->lun);
- }
- tinfo->goal.period = AHD_SYNCRATE_DT;
- tinfo->goal.ppr_options &= MSG_EXT_PPR_IU_REQ
- | MSG_EXT_PPR_QAS_REQ
- | MSG_EXT_PPR_DT_REQ;
- } else {
- /*
- * Target does not support the PPR message.
- * Attempt to negotiate SPI-2 style.
- */
- if (bootverbose) {
- printf("(%s:%c:%d:%d): PPR Rejected. "
- "Trying WDTR/SDTR\n",
- ahd_name(ahd), devinfo->channel,
- devinfo->target, devinfo->lun);
- }
- tinfo->goal.ppr_options = 0;
- tinfo->curr.transport_version = 2;
- tinfo->goal.transport_version = 2;
- }
- ahd->msgout_index = 0;
- ahd->msgout_len = 0;
- ahd_build_transfer_msg(ahd, devinfo);
- ahd->msgout_index = 0;
- response = 1;
- } else if (ahd_sent_msg(ahd, AHDMSG_EXT, MSG_EXT_WDTR, /*full*/FALSE)) {
-
- /* note 8bit xfers */
- printf("(%s:%c:%d:%d): refuses WIDE negotiation. Using "
- "8bit transfers\n", ahd_name(ahd),
- devinfo->channel, devinfo->target, devinfo->lun);
- ahd_set_width(ahd, devinfo, MSG_EXT_WDTR_BUS_8_BIT,
- AHD_TRANS_ACTIVE|AHD_TRANS_GOAL,
- /*paused*/TRUE);
- /*
- * No need to clear the sync rate. If the target
- * did not accept the command, our syncrate is
- * unaffected. If the target started the negotiation,
- * but rejected our response, we already cleared the
- * sync rate before sending our WDTR.
- */
- if (tinfo->goal.offset != tinfo->curr.offset) {
-
- /* Start the sync negotiation */
- ahd->msgout_index = 0;
- ahd->msgout_len = 0;
- ahd_build_transfer_msg(ahd, devinfo);
- ahd->msgout_index = 0;
- response = 1;
- }
- } else if (ahd_sent_msg(ahd, AHDMSG_EXT, MSG_EXT_SDTR, /*full*/FALSE)) {
- /* note asynch xfers and clear flag */
- ahd_set_syncrate(ahd, devinfo, /*period*/0,
- /*offset*/0, /*ppr_options*/0,
- AHD_TRANS_ACTIVE|AHD_TRANS_GOAL,
- /*paused*/TRUE);
- printf("(%s:%c:%d:%d): refuses synchronous negotiation. "
- "Using asynchronous transfers\n",
- ahd_name(ahd), devinfo->channel,
- devinfo->target, devinfo->lun);
- } else if ((scb->hscb->control & MSG_SIMPLE_TASK) != 0) {
- int tag_type;
- int mask;
-
- tag_type = (scb->hscb->control & MSG_SIMPLE_TASK);
-
- if (tag_type == MSG_SIMPLE_TASK) {
- printf("(%s:%c:%d:%d): refuses tagged commands. "
- "Performing non-tagged I/O\n", ahd_name(ahd),
- devinfo->channel, devinfo->target, devinfo->lun);
- ahd_set_tags(ahd, devinfo, AHD_QUEUE_NONE);
- mask = ~0x23;
- } else {
- printf("(%s:%c:%d:%d): refuses %s tagged commands. "
- "Performing simple queue tagged I/O only\n",
- ahd_name(ahd), devinfo->channel, devinfo->target,
- devinfo->lun, tag_type == MSG_ORDERED_TASK
- ? "ordered" : "head of queue");
- ahd_set_tags(ahd, devinfo, AHD_QUEUE_BASIC);
- mask = ~0x03;
- }
-
- /*
- * Resend the identify for this CCB as the target
- * may believe that the selection is invalid otherwise.
- */
- ahd_outb(ahd, SCB_CONTROL,
- ahd_inb_scbram(ahd, SCB_CONTROL) & mask);
- scb->hscb->control &= mask;
- ahd_set_transaction_tag(scb, /*enabled*/FALSE,
- /*type*/MSG_SIMPLE_TASK);
- ahd_outb(ahd, MSG_OUT, MSG_IDENTIFYFLAG);
- ahd_assert_atn(ahd);
- ahd_busy_tcl(ahd, BUILD_TCL(scb->hscb->scsiid, devinfo->lun),
- SCB_GET_TAG(scb));
-
- /*
- * Requeue all tagged commands for this target
- * currently in our posession so they can be
- * converted to untagged commands.
- */
- ahd_search_qinfifo(ahd, SCB_GET_TARGET(ahd, scb),
- SCB_GET_CHANNEL(ahd, scb),
- SCB_GET_LUN(scb), /*tag*/SCB_LIST_NULL,
- ROLE_INITIATOR, CAM_REQUEUE_REQ,
- SEARCH_COMPLETE);
- } else if (ahd_sent_msg(ahd, AHDMSG_1B, MSG_IDENTIFYFLAG, TRUE)) {
- /*
- * Most likely the device believes that we had
- * previously negotiated packetized.
- */
- ahd->msg_flags |= MSG_FLAG_EXPECT_PPR_BUSFREE
- | MSG_FLAG_IU_REQ_CHANGED;
-
- ahd_force_renegotiation(ahd, devinfo);
- ahd->msgout_index = 0;
- ahd->msgout_len = 0;
- ahd_build_transfer_msg(ahd, devinfo);
- ahd->msgout_index = 0;
- response = 1;
- } else {
- /*
- * Otherwise, we ignore it.
- */
- printf("%s:%c:%d: Message reject for %x -- ignored\n",
- ahd_name(ahd), devinfo->channel, devinfo->target,
- last_msg);
- }
- return (response);
-}
-
-/*
- * Process an ingnore wide residue message.
- */
-static void
-ahd_handle_ign_wide_residue(struct ahd_softc *ahd, struct ahd_devinfo *devinfo)
-{
- u_int scb_index;
- struct scb *scb;
-
- scb_index = ahd_get_scbptr(ahd);
- scb = ahd_lookup_scb(ahd, scb_index);
- /*
- * XXX Actually check data direction in the sequencer?
- * Perhaps add datadir to some spare bits in the hscb?
- */
- if ((ahd_inb(ahd, SEQ_FLAGS) & DPHASE) == 0
- || ahd_get_transfer_dir(scb) != CAM_DIR_IN) {
- /*
- * Ignore the message if we haven't
- * seen an appropriate data phase yet.
- */
- } else {
- /*
- * If the residual occurred on the last
- * transfer and the transfer request was
- * expected to end on an odd count, do
- * nothing. Otherwise, subtract a byte
- * and update the residual count accordingly.
- */
- uint32_t sgptr;
-
- sgptr = ahd_inb_scbram(ahd, SCB_RESIDUAL_SGPTR);
- if ((sgptr & SG_LIST_NULL) != 0
- && ahd_inb(ahd, DATA_COUNT_ODD) == 1) {
- /*
- * If the residual occurred on the last
- * transfer and the transfer request was
- * expected to end on an odd count, do
- * nothing.
- */
- } else {
- uint32_t data_cnt;
- uint64_t data_addr;
- uint32_t sglen;
-
- /* Pull in the rest of the sgptr */
- sgptr |=
- (ahd_inb_scbram(ahd, SCB_RESIDUAL_SGPTR + 3) << 24)
- | (ahd_inb_scbram(ahd, SCB_RESIDUAL_SGPTR + 2) << 16)
- | (ahd_inb_scbram(ahd, SCB_RESIDUAL_SGPTR + 1) << 8);
- sgptr &= SG_PTR_MASK;
- data_cnt =
- (ahd_inb_scbram(ahd, SCB_RESIDUAL_DATACNT+3) << 24)
- | (ahd_inb_scbram(ahd, SCB_RESIDUAL_DATACNT+2) << 16)
- | (ahd_inb_scbram(ahd, SCB_RESIDUAL_DATACNT+1) << 8)
- | (ahd_inb_scbram(ahd, SCB_RESIDUAL_DATACNT));
-
- data_addr = (((uint64_t)ahd_inb(ahd, SHADDR + 7)) << 56)
- | (((uint64_t)ahd_inb(ahd, SHADDR + 6)) << 48)
- | (((uint64_t)ahd_inb(ahd, SHADDR + 5)) << 40)
- | (((uint64_t)ahd_inb(ahd, SHADDR + 4)) << 32)
- | (ahd_inb(ahd, SHADDR + 3) << 24)
- | (ahd_inb(ahd, SHADDR + 2) << 16)
- | (ahd_inb(ahd, SHADDR + 1) << 8)
- | (ahd_inb(ahd, SHADDR));
-
- data_cnt += 1;
- data_addr -= 1;
-
- if ((ahd->flags & AHD_64BIT_ADDRESSING) != 0) {
- struct ahd_dma64_seg *sg;
-
- sg = ahd_sg_bus_to_virt(ahd, scb, sgptr);
-
- /*
- * The residual sg ptr points to the next S/G
- * to load so we must go back one.
- */
- sg--;
- sglen = ahd_le32toh(sg->len) & AHD_SG_LEN_MASK;
- if (sg != scb->sg_list
- && sglen < (data_cnt & AHD_SG_LEN_MASK)) {
-
- sg--;
- sglen = ahd_le32toh(sg->len);
- /*
- * Preserve High Address and SG_LIST
- * bits while setting the count to 1.
- */
- data_cnt = 1|(sglen&(~AHD_SG_LEN_MASK));
- data_addr = ahd_le64toh(sg->addr)
- + (sglen & AHD_SG_LEN_MASK)
- - 1;
-
- /*
- * Increment sg so it points to the
- * "next" sg.
- */
- sg++;
- sgptr = ahd_sg_virt_to_bus(ahd, scb,
- sg);
- }
- } else {
- struct ahd_dma_seg *sg;
-
- sg = ahd_sg_bus_to_virt(ahd, scb, sgptr);
-
- /*
- * The residual sg ptr points to the next S/G
- * to load so we must go back one.
- */
- sg--;
- sglen = ahd_le32toh(sg->len) & AHD_SG_LEN_MASK;
- if (sg != scb->sg_list
- && sglen < (data_cnt & AHD_SG_LEN_MASK)) {
-
- sg--;
- sglen = ahd_le32toh(sg->len);
- /*
- * Preserve High Address and SG_LIST
- * bits while setting the count to 1.
- */
- data_cnt = 1|(sglen&(~AHD_SG_LEN_MASK));
- data_addr = ahd_le32toh(sg->addr)
- + (sglen & AHD_SG_LEN_MASK)
- - 1;
-
- /*
- * Increment sg so it points to the
- * "next" sg.
- */
- sg++;
- sgptr = ahd_sg_virt_to_bus(ahd, scb,
- sg);
- }
- }
- ahd_outb(ahd, SCB_RESIDUAL_SGPTR + 3, sgptr >> 24);
- ahd_outb(ahd, SCB_RESIDUAL_SGPTR + 2, sgptr >> 16);
- ahd_outb(ahd, SCB_RESIDUAL_SGPTR + 1, sgptr >> 8);
- ahd_outb(ahd, SCB_RESIDUAL_SGPTR, sgptr);
-
- ahd_outb(ahd, SCB_RESIDUAL_DATACNT + 3, data_cnt >> 24);
- ahd_outb(ahd, SCB_RESIDUAL_DATACNT + 2, data_cnt >> 16);
- ahd_outb(ahd, SCB_RESIDUAL_DATACNT + 1, data_cnt >> 8);
- ahd_outb(ahd, SCB_RESIDUAL_DATACNT, data_cnt);
-
- /*
- * The FIFO's pointers will be updated if/when the
- * sequencer re-enters a data phase.
- */
- }
- }
-}
-
-
-/*
- * Reinitialize the data pointers for the active transfer
- * based on its current residual.
- */
-static void
-ahd_reinitialize_dataptrs(struct ahd_softc *ahd)
-{
- struct scb *scb;
- ahd_mode_state saved_modes;
- u_int scb_index;
- u_int wait;
- uint32_t sgptr;
- uint32_t resid;
- uint64_t dataptr;
-
- AHD_ASSERT_MODES(ahd, AHD_MODE_DFF0_MSK|AHD_MODE_DFF1_MSK,
- AHD_MODE_DFF0_MSK|AHD_MODE_DFF1_MSK);
-
- scb_index = ahd_get_scbptr(ahd);
- scb = ahd_lookup_scb(ahd, scb_index);
-
- /*
- * Release and reacquire the FIFO so we
- * have a clean slate.
- */
- ahd_outb(ahd, DFFSXFRCTL, CLRCHN);
- wait = 1000;
- do {
- ahd_delay(100);
- } while (--wait && !(ahd_inb(ahd, MDFFSTAT) & FIFOFREE));
- if (wait == 0) {
- ahd_print_path(ahd, scb);
- printf("ahd_reinitialize_dataptrs: Forcing FIFO free.\n");
- ahd_outb(ahd, DFFSXFRCTL, RSTCHN|CLRSHCNT);
- }
- saved_modes = ahd_save_modes(ahd);
- ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
- ahd_outb(ahd, DFFSTAT,
- ahd_inb(ahd, DFFSTAT)
- | (saved_modes == 0x11 ? CURRFIFO_1 : CURRFIFO_0));
-
- /*
- * Determine initial values for data_addr and data_cnt
- * for resuming the data phase.
- */
- sgptr = (ahd_inb_scbram(ahd, SCB_RESIDUAL_SGPTR + 3) << 24)
- | (ahd_inb_scbram(ahd, SCB_RESIDUAL_SGPTR + 2) << 16)
- | (ahd_inb_scbram(ahd, SCB_RESIDUAL_SGPTR + 1) << 8)
- | ahd_inb_scbram(ahd, SCB_RESIDUAL_SGPTR);
- sgptr &= SG_PTR_MASK;
-
- resid = (ahd_inb_scbram(ahd, SCB_RESIDUAL_DATACNT + 2) << 16)
- | (ahd_inb_scbram(ahd, SCB_RESIDUAL_DATACNT + 1) << 8)
- | ahd_inb_scbram(ahd, SCB_RESIDUAL_DATACNT);
-
- if ((ahd->flags & AHD_64BIT_ADDRESSING) != 0) {
- struct ahd_dma64_seg *sg;
-
- sg = ahd_sg_bus_to_virt(ahd, scb, sgptr);
-
- /* The residual sg_ptr always points to the next sg */
- sg--;
-
- dataptr = ahd_le64toh(sg->addr)
- + (ahd_le32toh(sg->len) & AHD_SG_LEN_MASK)
- - resid;
- ahd_outb(ahd, HADDR + 7, dataptr >> 56);
- ahd_outb(ahd, HADDR + 6, dataptr >> 48);
- ahd_outb(ahd, HADDR + 5, dataptr >> 40);
- ahd_outb(ahd, HADDR + 4, dataptr >> 32);
- } else {
- struct ahd_dma_seg *sg;
-
- sg = ahd_sg_bus_to_virt(ahd, scb, sgptr);
-
- /* The residual sg_ptr always points to the next sg */
- sg--;
-
- dataptr = ahd_le32toh(sg->addr)
- + (ahd_le32toh(sg->len) & AHD_SG_LEN_MASK)
- - resid;
- ahd_outb(ahd, HADDR + 4,
- (ahd_le32toh(sg->len) & ~AHD_SG_LEN_MASK) >> 24);
- }
- ahd_outb(ahd, HADDR + 3, dataptr >> 24);
- ahd_outb(ahd, HADDR + 2, dataptr >> 16);
- ahd_outb(ahd, HADDR + 1, dataptr >> 8);
- ahd_outb(ahd, HADDR, dataptr);
- ahd_outb(ahd, HCNT + 2, resid >> 16);
- ahd_outb(ahd, HCNT + 1, resid >> 8);
- ahd_outb(ahd, HCNT, resid);
-}
-
-/*
- * Handle the effects of issuing a bus device reset message.
- */
-static void
-ahd_handle_devreset(struct ahd_softc *ahd, struct ahd_devinfo *devinfo,
- u_int lun, cam_status status, char *message,
- int verbose_level)
-{
-#ifdef AHD_TARGET_MODE
- struct ahd_tmode_tstate* tstate;
-#endif
- int found;
-
- found = ahd_abort_scbs(ahd, devinfo->target, devinfo->channel,
- lun, SCB_LIST_NULL, devinfo->role,
- status);
-
-#ifdef AHD_TARGET_MODE
- /*
- * Send an immediate notify ccb to all target mord peripheral
- * drivers affected by this action.
- */
- tstate = ahd->enabled_targets[devinfo->our_scsiid];
- if (tstate != NULL) {
- u_int cur_lun;
- u_int max_lun;
-
- if (lun != CAM_LUN_WILDCARD) {
- cur_lun = 0;
- max_lun = AHD_NUM_LUNS - 1;
- } else {
- cur_lun = lun;
- max_lun = lun;
- }
- for (cur_lun <= max_lun; cur_lun++) {
- struct ahd_tmode_lstate* lstate;
-
- lstate = tstate->enabled_luns[cur_lun];
- if (lstate == NULL)
- continue;
-
- ahd_queue_lstate_event(ahd, lstate, devinfo->our_scsiid,
- MSG_BUS_DEV_RESET, /*arg*/0);
- ahd_send_lstate_events(ahd, lstate);
- }
- }
-#endif
-
- /*
- * Go back to async/narrow transfers and renegotiate.
- */
- ahd_set_width(ahd, devinfo, MSG_EXT_WDTR_BUS_8_BIT,
- AHD_TRANS_CUR, /*paused*/TRUE);
- ahd_set_syncrate(ahd, devinfo, /*period*/0, /*offset*/0,
- /*ppr_options*/0, AHD_TRANS_CUR, /*paused*/TRUE);
-
- ahd_send_async(ahd, devinfo->channel, devinfo->target,
- lun, AC_SENT_BDR, NULL);
-
- if (message != NULL
- && (verbose_level <= bootverbose))
- printf("%s: %s on %c:%d. %d SCBs aborted\n", ahd_name(ahd),
- message, devinfo->channel, devinfo->target, found);
-}
-
-#ifdef AHD_TARGET_MODE
-static void
-ahd_setup_target_msgin(struct ahd_softc *ahd, struct ahd_devinfo *devinfo,
- struct scb *scb)
-{
-
- /*
- * To facilitate adding multiple messages together,
- * each routine should increment the index and len
- * variables instead of setting them explicitly.
- */
- ahd->msgout_index = 0;
- ahd->msgout_len = 0;
-
- if (scb != NULL && (scb->flags & SCB_AUTO_NEGOTIATE) != 0)
- ahd_build_transfer_msg(ahd, devinfo);
- else
- panic("ahd_intr: AWAITING target message with no message");
-
- ahd->msgout_index = 0;
- ahd->msg_type = MSG_TYPE_TARGET_MSGIN;
-}
-#endif
-/**************************** Initialization **********************************/
-static u_int
-ahd_sglist_size(struct ahd_softc *ahd)
-{
- bus_size_t list_size;
-
- list_size = sizeof(struct ahd_dma_seg) * AHD_NSEG;
- if ((ahd->flags & AHD_64BIT_ADDRESSING) != 0)
- list_size = sizeof(struct ahd_dma64_seg) * AHD_NSEG;
- return (list_size);
-}
-
-/*
- * Calculate the optimum S/G List allocation size. S/G elements used
- * for a given transaction must be physically contiguous. Assume the
- * OS will allocate full pages to us, so it doesn't make sense to request
- * less than a page.
- */
-static u_int
-ahd_sglist_allocsize(struct ahd_softc *ahd)
-{
- bus_size_t sg_list_increment;
- bus_size_t sg_list_size;
- bus_size_t max_list_size;
- bus_size_t best_list_size;
-
- /* Start out with the minimum required for AHD_NSEG. */
- sg_list_increment = ahd_sglist_size(ahd);
- sg_list_size = sg_list_increment;
-
- /* Get us as close as possible to a page in size. */
- while ((sg_list_size + sg_list_increment) <= PAGE_SIZE)
- sg_list_size += sg_list_increment;
-
- /*
- * Try to reduce the amount of wastage by allocating
- * multiple pages.
- */
- best_list_size = sg_list_size;
- max_list_size = roundup(sg_list_increment, PAGE_SIZE);
- if (max_list_size < 4 * PAGE_SIZE)
- max_list_size = 4 * PAGE_SIZE;
- if (max_list_size > (AHD_SCB_MAX_ALLOC * sg_list_increment))
- max_list_size = (AHD_SCB_MAX_ALLOC * sg_list_increment);
- while ((sg_list_size + sg_list_increment) <= max_list_size
- && (sg_list_size % PAGE_SIZE) != 0) {
- bus_size_t new_mod;
- bus_size_t best_mod;
-
- sg_list_size += sg_list_increment;
- new_mod = sg_list_size % PAGE_SIZE;
- best_mod = best_list_size % PAGE_SIZE;
- if (new_mod > best_mod || new_mod == 0) {
- best_list_size = sg_list_size;
- }
- }
- return (best_list_size);
-}
-
-/*
- * Allocate a controller structure for a new device
- * and perform initial initializion.
- */
-struct ahd_softc *
-ahd_alloc(void *platform_arg, char *name)
-{
- struct ahd_softc *ahd;
-
-#ifndef __FreeBSD__
- ahd = malloc(sizeof(*ahd), M_DEVBUF, M_NOWAIT);
- if (!ahd) {
- printf("aic7xxx: cannot malloc softc!\n");
- free(name, M_DEVBUF);
- return NULL;
- }
-#else
- ahd = device_get_softc((device_t)platform_arg);
-#endif
- memset(ahd, 0, sizeof(*ahd));
- ahd->seep_config = malloc(sizeof(*ahd->seep_config),
- M_DEVBUF, M_NOWAIT);
- if (ahd->seep_config == NULL) {
-#ifndef __FreeBSD__
- free(ahd, M_DEVBUF);
-#endif
- free(name, M_DEVBUF);
- return (NULL);
- }
- LIST_INIT(&ahd->pending_scbs);
- /* We don't know our unit number until the OSM sets it */
- ahd->name = name;
- ahd->unit = -1;
- ahd->description = NULL;
- ahd->bus_description = NULL;
- ahd->channel = 'A';
- ahd->chip = AHD_NONE;
- ahd->features = AHD_FENONE;
- ahd->bugs = AHD_BUGNONE;
- ahd->flags = AHD_SPCHK_ENB_A|AHD_RESET_BUS_A|AHD_TERM_ENB_A
- | AHD_EXTENDED_TRANS_A|AHD_STPWLEVEL_A;
- ahd_timer_init(&ahd->reset_timer);
- ahd_timer_init(&ahd->stat_timer);
- ahd->int_coalessing_timer = AHD_INT_COALESSING_TIMER_DEFAULT;
- ahd->int_coalessing_maxcmds = AHD_INT_COALESSING_MAXCMDS_DEFAULT;
- ahd->int_coalessing_mincmds = AHD_INT_COALESSING_MINCMDS_DEFAULT;
- ahd->int_coalessing_threshold = AHD_INT_COALESSING_THRESHOLD_DEFAULT;
- ahd->int_coalessing_stop_threshold =
- AHD_INT_COALESSING_STOP_THRESHOLD_DEFAULT;
-
- if (ahd_platform_alloc(ahd, platform_arg) != 0) {
- ahd_free(ahd);
- ahd = NULL;
- }
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MEMORY) != 0) {
- printf("%s: scb size = 0x%x, hscb size = 0x%x\n",
- ahd_name(ahd), (u_int)sizeof(struct scb),
- (u_int)sizeof(struct hardware_scb));
- }
-#endif
- return (ahd);
-}
-
-int
-ahd_softc_init(struct ahd_softc *ahd)
-{
-
- ahd->unpause = 0;
- ahd->pause = PAUSE;
- return (0);
-}
-
-void
-ahd_softc_insert(struct ahd_softc *ahd)
-{
- struct ahd_softc *list_ahd;
-
-#if AHD_PCI_CONFIG > 0
- /*
- * Second Function PCI devices need to inherit some
- * settings from function 0.
- */
- if ((ahd->features & AHD_MULTI_FUNC) != 0) {
- TAILQ_FOREACH(list_ahd, &ahd_tailq, links) {
- ahd_dev_softc_t list_pci;
- ahd_dev_softc_t pci;
-
- list_pci = list_ahd->dev_softc;
- pci = ahd->dev_softc;
- if (ahd_get_pci_slot(list_pci) == ahd_get_pci_slot(pci)
- && ahd_get_pci_bus(list_pci) == ahd_get_pci_bus(pci)) {
- struct ahd_softc *master;
- struct ahd_softc *slave;
-
- if (ahd_get_pci_function(list_pci) == 0) {
- master = list_ahd;
- slave = ahd;
- } else {
- master = ahd;
- slave = list_ahd;
- }
- slave->flags &= ~AHD_BIOS_ENABLED;
- slave->flags |=
- master->flags & AHD_BIOS_ENABLED;
- slave->flags &= ~AHD_PRIMARY_CHANNEL;
- slave->flags |=
- master->flags & AHD_PRIMARY_CHANNEL;
- break;
- }
- }
- }
-#endif
-
- /*
- * Insertion sort into our list of softcs.
- */
- list_ahd = TAILQ_FIRST(&ahd_tailq);
- while (list_ahd != NULL
- && ahd_softc_comp(list_ahd, ahd) <= 0)
- list_ahd = TAILQ_NEXT(list_ahd, links);
- if (list_ahd != NULL)
- TAILQ_INSERT_BEFORE(list_ahd, ahd, links);
- else
- TAILQ_INSERT_TAIL(&ahd_tailq, ahd, links);
- ahd->init_level++;
-}
-
-/*
- * Verify that the passed in softc pointer is for a
- * controller that is still configured.
- */
-struct ahd_softc *
-ahd_find_softc(struct ahd_softc *ahd)
-{
- struct ahd_softc *list_ahd;
-
- TAILQ_FOREACH(list_ahd, &ahd_tailq, links) {
- if (list_ahd == ahd)
- return (ahd);
- }
- return (NULL);
-}
-
-void
-ahd_set_unit(struct ahd_softc *ahd, int unit)
-{
- ahd->unit = unit;
-}
-
-void
-ahd_set_name(struct ahd_softc *ahd, char *name)
-{
- if (ahd->name != NULL)
- free(ahd->name, M_DEVBUF);
- ahd->name = name;
-}
-
-void
-ahd_free(struct ahd_softc *ahd)
-{
- int i;
-
- ahd_fini_scbdata(ahd);
- switch (ahd->init_level) {
- default:
- case 5:
- ahd_shutdown(ahd);
- TAILQ_REMOVE(&ahd_tailq, ahd, links);
- /* FALLTHROUGH */
- case 4:
- ahd_dmamap_unload(ahd, ahd->shared_data_dmat,
- ahd->shared_data_dmamap);
- /* FALLTHROUGH */
- case 3:
- ahd_dmamem_free(ahd, ahd->shared_data_dmat, ahd->qoutfifo,
- ahd->shared_data_dmamap);
- ahd_dmamap_destroy(ahd, ahd->shared_data_dmat,
- ahd->shared_data_dmamap);
- /* FALLTHROUGH */
- case 2:
- ahd_dma_tag_destroy(ahd, ahd->shared_data_dmat);
- case 1:
-#ifndef __linux__
- ahd_dma_tag_destroy(ahd, ahd->buffer_dmat);
-#endif
- break;
- case 0:
- break;
- }
-
-#ifndef __linux__
- ahd_dma_tag_destroy(ahd, ahd->parent_dmat);
-#endif
- ahd_platform_free(ahd);
- for (i = 0; i < AHD_NUM_TARGETS; i++) {
- struct ahd_tmode_tstate *tstate;
-
- tstate = ahd->enabled_targets[i];
- if (tstate != NULL) {
-#if AHD_TARGET_MODE
- int j;
-
- for (j = 0; j < AHD_NUM_LUNS; j++) {
- struct ahd_tmode_lstate *lstate;
-
- lstate = tstate->enabled_luns[j];
- if (lstate != NULL) {
- xpt_free_path(lstate->path);
- free(lstate, M_DEVBUF);
- }
- }
-#endif
- free(tstate, M_DEVBUF);
- }
- }
-#if AHD_TARGET_MODE
- if (ahd->black_hole != NULL) {
- xpt_free_path(ahd->black_hole->path);
- free(ahd->black_hole, M_DEVBUF);
- }
-#endif
- if (ahd->name != NULL)
- free(ahd->name, M_DEVBUF);
- if (ahd->seep_config != NULL)
- free(ahd->seep_config, M_DEVBUF);
- if (ahd->saved_stack != NULL)
- free(ahd->saved_stack, M_DEVBUF);
-#ifndef __FreeBSD__
- free(ahd, M_DEVBUF);
-#endif
- return;
-}
-
-void
-ahd_shutdown(void *arg)
-{
- struct ahd_softc *ahd;
-
- ahd = (struct ahd_softc *)arg;
-
- /*
- * Stop periodic timer callbacks.
- */
- ahd_timer_stop(&ahd->reset_timer);
- ahd_timer_stop(&ahd->stat_timer);
-
- /* This will reset most registers to 0, but not all */
- ahd_reset(ahd);
-}
-
-/*
- * Reset the controller and record some information about it
- * that is only available just after a reset.
- */
-int
-ahd_reset(struct ahd_softc *ahd)
-{
- u_int sxfrctl1;
- int wait;
- uint32_t cmd;
-
- /*
- * Preserve the value of the SXFRCTL1 register for all channels.
- * It contains settings that affect termination and we don't want
- * to disturb the integrity of the bus.
- */
- ahd_pause(ahd);
- sxfrctl1 = ahd_inb(ahd, SXFRCTL1);
-
- cmd = ahd_pci_read_config(ahd->dev_softc, PCIR_COMMAND, /*bytes*/2);
- if ((ahd->bugs & AHD_PCIX_CHIPRST_BUG) != 0) {
- uint32_t mod_cmd;
-
- /*
- * A4 Razor #632
- * During the assertion of CHIPRST, the chip
- * does not disable its parity logic prior to
- * the start of the reset. This may cause a
- * parity error to be detected and thus a
- * spurious SERR or PERR assertion. Disble
- * PERR and SERR responses during the CHIPRST.
- */
- mod_cmd = cmd & ~(PCIM_CMD_PERRESPEN|PCIM_CMD_SERRESPEN);
- ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND,
- mod_cmd, /*bytes*/2);
- }
- ahd_outb(ahd, HCNTRL, CHIPRST | ahd->pause);
-
- /*
- * Ensure that the reset has finished. We delay 1000us
- * prior to reading the register to make sure the chip
- * has sufficiently completed its reset to handle register
- * accesses.
- */
- wait = 1000;
- do {
- ahd_delay(1000);
- } while (--wait && !(ahd_inb(ahd, HCNTRL) & CHIPRSTACK));
-
- if (wait == 0) {
- printf("%s: WARNING - Failed chip reset! "
- "Trying to initialize anyway.\n", ahd_name(ahd));
- }
- ahd_outb(ahd, HCNTRL, ahd->pause);
-
- if ((ahd->bugs & AHD_PCIX_CHIPRST_BUG) != 0) {
- /*
- * Clear any latched PCI error status and restore
- * previous SERR and PERR response enables.
- */
- ahd_pci_write_config(ahd->dev_softc, PCIR_STATUS + 1,
- 0xFF, /*bytes*/1);
- ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND,
- cmd, /*bytes*/2);
- }
- /* After a reset, we know the state of the mode register. */
- ahd_known_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
-
- /* Determine chip configuration */
- ahd->features &= ~AHD_WIDE;
- if ((ahd_inb(ahd, SBLKCTL) & SELWIDE) != 0)
- ahd->features |= AHD_WIDE;
-
- /*
- * Restore SXFRCTL1.
- *
- * We must always initialize STPWEN to 1 before we
- * restore the saved values. STPWEN is initialized
- * to a tri-state condition which can only be cleared
- * by turning it on.
- */
- ahd_outb(ahd, SXFRCTL1, sxfrctl1|STPWEN);
- ahd_outb(ahd, SXFRCTL1, sxfrctl1);
-
- /*
- * If a recovery action has forced a chip reset,
- * re-initialize the chip to our likeing.
- */
- if (ahd->init_level > 0)
- ahd_chip_init(ahd);
-
- return (0);
-}
-
-/*
- * Determine the number of SCBs available on the controller
- */
-int
-ahd_probe_scbs(struct ahd_softc *ahd) {
- int i;
-
- AHD_ASSERT_MODES(ahd, ~(AHD_MODE_UNKNOWN_MSK|AHD_MODE_CFG_MSK),
- ~(AHD_MODE_UNKNOWN_MSK|AHD_MODE_CFG_MSK));
- for (i = 0; i < AHD_SCB_MAX; i++) {
- int j;
-
- ahd_set_scbptr(ahd, i);
- ahd_outw(ahd, SCB_BASE, i);
- for (j = 2; j < 64; j++)
- ahd_outb(ahd, SCB_BASE+j, 0);
- /* Start out life as unallocated (needing an abort) */
- ahd_outb(ahd, SCB_CONTROL, MK_MESSAGE);
- if (ahd_inw_scbram(ahd, SCB_BASE) != i)
- break;
- ahd_set_scbptr(ahd, 0);
- if (ahd_inw_scbram(ahd, SCB_BASE) != 0)
- break;
- }
- return (i);
-}
-
-static void
-ahd_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nseg, int error)
-{
- bus_addr_t *baddr;
-
- baddr = (bus_addr_t *)arg;
- *baddr = segs->ds_addr;
-}
-
-static void
-ahd_initialize_hscbs(struct ahd_softc *ahd)
-{
- int i;
-
- for (i = 0; i < ahd->scb_data.maxhscbs; i++) {
- ahd_set_scbptr(ahd, i);
-
- /* Clear the control byte. */
- ahd_outb(ahd, SCB_CONTROL, 0);
-
- /* Set the next pointer */
- ahd_outw(ahd, SCB_NEXT, SCB_LIST_NULL);
- }
-}
-
-static int
-ahd_init_scbdata(struct ahd_softc *ahd)
-{
- struct scb_data *scb_data;
- int i;
-
- scb_data = &ahd->scb_data;
- TAILQ_INIT(&scb_data->free_scbs);
- for (i = 0; i < AHD_NUM_TARGETS * AHD_NUM_LUNS_NONPKT; i++)
- LIST_INIT(&scb_data->free_scb_lists[i]);
- LIST_INIT(&scb_data->any_dev_free_scb_list);
- SLIST_INIT(&scb_data->hscb_maps);
- SLIST_INIT(&scb_data->sg_maps);
- SLIST_INIT(&scb_data->sense_maps);
-
- /* Determine the number of hardware SCBs and initialize them */
- scb_data->maxhscbs = ahd_probe_scbs(ahd);
- if (scb_data->maxhscbs == 0) {
- printf("%s: No SCB space found\n", ahd_name(ahd));
- return (ENXIO);
- }
-
- ahd_initialize_hscbs(ahd);
-
- /*
- * Create our DMA tags. These tags define the kinds of device
- * accessible memory allocations and memory mappings we will
- * need to perform during normal operation.
- *
- * Unless we need to further restrict the allocation, we rely
- * on the restrictions of the parent dmat, hence the common
- * use of MAXADDR and MAXSIZE.
- */
-
- /* DMA tag for our hardware scb structures */
- if (ahd_dma_tag_create(ahd, ahd->parent_dmat, /*alignment*/1,
- /*boundary*/BUS_SPACE_MAXADDR_32BIT + 1,
- /*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
- /*highaddr*/BUS_SPACE_MAXADDR,
- /*filter*/NULL, /*filterarg*/NULL,
- PAGE_SIZE, /*nsegments*/1,
- /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT,
- /*flags*/0, &scb_data->hscb_dmat) != 0) {
- goto error_exit;
- }
-
- scb_data->init_level++;
-
- /* DMA tag for our S/G structures. */
- if (ahd_dma_tag_create(ahd, ahd->parent_dmat, /*alignment*/1,
- /*boundary*/BUS_SPACE_MAXADDR_32BIT + 1,
- /*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
- /*highaddr*/BUS_SPACE_MAXADDR,
- /*filter*/NULL, /*filterarg*/NULL,
- ahd_sglist_allocsize(ahd), /*nsegments*/1,
- /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT,
- /*flags*/0, &scb_data->sg_dmat) != 0) {
- goto error_exit;
- }
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MEMORY) != 0)
- printf("%s: ahd_sglist_allocsize = 0x%x\n", ahd_name(ahd),
- ahd_sglist_allocsize(ahd));
-#endif
-
- scb_data->init_level++;
-
- /* DMA tag for our sense buffers. We allocate in page sized chunks */
- if (ahd_dma_tag_create(ahd, ahd->parent_dmat, /*alignment*/1,
- /*boundary*/BUS_SPACE_MAXADDR_32BIT + 1,
- /*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
- /*highaddr*/BUS_SPACE_MAXADDR,
- /*filter*/NULL, /*filterarg*/NULL,
- PAGE_SIZE, /*nsegments*/1,
- /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT,
- /*flags*/0, &scb_data->sense_dmat) != 0) {
- goto error_exit;
- }
-
- scb_data->init_level++;
-
- /* Perform initial CCB allocation */
- ahd_alloc_scbs(ahd);
-
- if (scb_data->numscbs == 0) {
- printf("%s: ahd_init_scbdata - "
- "Unable to allocate initial scbs\n",
- ahd_name(ahd));
- goto error_exit;
- }
-
- /*
- * Note that we were successfull
- */
- return (0);
-
-error_exit:
-
- return (ENOMEM);
-}
-
-static struct scb *
-ahd_find_scb_by_tag(struct ahd_softc *ahd, u_int tag)
-{
- struct scb *scb;
-
- /*
- * Look on the pending list.
- */
- LIST_FOREACH(scb, &ahd->pending_scbs, pending_links) {
- if (SCB_GET_TAG(scb) == tag)
- return (scb);
- }
-
- /*
- * Then on all of the collision free lists.
- */
- TAILQ_FOREACH(scb, &ahd->scb_data.free_scbs, links.tqe) {
- struct scb *list_scb;
-
- list_scb = scb;
- do {
- if (SCB_GET_TAG(list_scb) == tag)
- return (list_scb);
- list_scb = LIST_NEXT(list_scb, collision_links);
- } while (list_scb);
- }
-
- /*
- * And finally on the generic free list.
- */
- LIST_FOREACH(scb, &ahd->scb_data.any_dev_free_scb_list, links.le) {
- if (SCB_GET_TAG(scb) == tag)
- return (scb);
- }
-
- return (NULL);
-}
-
-static void
-ahd_fini_scbdata(struct ahd_softc *ahd)
-{
- struct scb_data *scb_data;
-
- scb_data = &ahd->scb_data;
- if (scb_data == NULL)
- return;
-
- switch (scb_data->init_level) {
- default:
- case 7:
- {
- struct map_node *sns_map;
-
- while ((sns_map = SLIST_FIRST(&scb_data->sense_maps)) != NULL) {
- SLIST_REMOVE_HEAD(&scb_data->sense_maps, links);
- ahd_dmamap_unload(ahd, scb_data->sense_dmat,
- sns_map->dmamap);
- ahd_dmamem_free(ahd, scb_data->sense_dmat,
- sns_map->vaddr, sns_map->dmamap);
- free(sns_map, M_DEVBUF);
- }
- ahd_dma_tag_destroy(ahd, scb_data->sense_dmat);
- /* FALLTHROUGH */
- }
- case 6:
- {
- struct map_node *sg_map;
-
- while ((sg_map = SLIST_FIRST(&scb_data->sg_maps)) != NULL) {
- SLIST_REMOVE_HEAD(&scb_data->sg_maps, links);
- ahd_dmamap_unload(ahd, scb_data->sg_dmat,
- sg_map->dmamap);
- ahd_dmamem_free(ahd, scb_data->sg_dmat,
- sg_map->vaddr, sg_map->dmamap);
- free(sg_map, M_DEVBUF);
- }
- ahd_dma_tag_destroy(ahd, scb_data->sg_dmat);
- /* FALLTHROUGH */
- }
- case 5:
- {
- struct map_node *hscb_map;
-
- while ((hscb_map = SLIST_FIRST(&scb_data->hscb_maps)) != NULL) {
- SLIST_REMOVE_HEAD(&scb_data->hscb_maps, links);
- ahd_dmamap_unload(ahd, scb_data->hscb_dmat,
- hscb_map->dmamap);
- ahd_dmamem_free(ahd, scb_data->hscb_dmat,
- hscb_map->vaddr, hscb_map->dmamap);
- free(hscb_map, M_DEVBUF);
- }
- ahd_dma_tag_destroy(ahd, scb_data->hscb_dmat);
- /* FALLTHROUGH */
- }
- case 4:
- case 3:
- case 2:
- case 1:
- case 0:
- break;
- }
-}
-
-/*
- * DSP filter Bypass must be enabled until the first selection
- * after a change in bus mode (Razor #491 and #493).
- */
-static void
-ahd_setup_iocell_workaround(struct ahd_softc *ahd)
-{
- ahd_mode_state saved_modes;
-
- saved_modes = ahd_save_modes(ahd);
- ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG);
- ahd_outb(ahd, DSPDATACTL, ahd_inb(ahd, DSPDATACTL)
- | BYPASSENAB | RCVROFFSTDIS | XMITOFFSTDIS);
- ahd_outb(ahd, SIMODE0, ahd_inb(ahd, SIMODE0) | (ENSELDO|ENSELDI));
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MISC) != 0)
- printf("%s: Setting up iocell workaround\n", ahd_name(ahd));
-#endif
- ahd_restore_modes(ahd, saved_modes);
-}
-
-static void
-ahd_iocell_first_selection(struct ahd_softc *ahd)
-{
- ahd_mode_state saved_modes;
- u_int sblkctl;
-
- saved_modes = ahd_save_modes(ahd);
- ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
- sblkctl = ahd_inb(ahd, SBLKCTL);
- ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG);
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MISC) != 0)
- printf("%s: iocell first selection\n", ahd_name(ahd));
-#endif
- if ((sblkctl & ENAB40) != 0) {
- ahd_outb(ahd, DSPDATACTL,
- ahd_inb(ahd, DSPDATACTL) & ~BYPASSENAB);
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MISC) != 0)
- printf("%s: BYPASS now disabled\n", ahd_name(ahd));
-#endif
- }
- ahd_outb(ahd, SIMODE0, ahd_inb(ahd, SIMODE0) & ~(ENSELDO|ENSELDI));
- ahd_outb(ahd, CLRINT, CLRSCSIINT);
- ahd_restore_modes(ahd, saved_modes);
-}
-
-/*************************** SCB Management ***********************************/
-static void
-ahd_add_col_list(struct ahd_softc *ahd, struct scb *scb, u_int col_idx)
-{
- struct scb_list *free_list;
- struct scb_tailq *free_tailq;
- struct scb *first_scb;
-
- scb->flags |= SCB_ON_COL_LIST;
- AHD_SET_SCB_COL_IDX(scb, col_idx);
- free_list = &ahd->scb_data.free_scb_lists[col_idx];
- free_tailq = &ahd->scb_data.free_scbs;
- first_scb = LIST_FIRST(free_list);
- if (first_scb != NULL) {
- LIST_INSERT_AFTER(first_scb, scb, collision_links);
- } else {
- LIST_INSERT_HEAD(free_list, scb, collision_links);
- TAILQ_INSERT_TAIL(free_tailq, scb, links.tqe);
- }
-}
-
-static void
-ahd_rem_col_list(struct ahd_softc *ahd, struct scb *scb)
-{
- struct scb_list *free_list;
- struct scb_tailq *free_tailq;
- struct scb *first_scb;
- u_int col_idx;
-
- scb->flags &= ~SCB_ON_COL_LIST;
- col_idx = AHD_GET_SCB_COL_IDX(ahd, scb);
- free_list = &ahd->scb_data.free_scb_lists[col_idx];
- free_tailq = &ahd->scb_data.free_scbs;
- first_scb = LIST_FIRST(free_list);
- if (first_scb == scb) {
- struct scb *next_scb;
-
- /*
- * Maintain order in the collision free
- * lists for fairness if this device has
- * other colliding tags active.
- */
- next_scb = LIST_NEXT(scb, collision_links);
- if (next_scb != NULL) {
- TAILQ_INSERT_AFTER(free_tailq, scb,
- next_scb, links.tqe);
- }
- TAILQ_REMOVE(free_tailq, scb, links.tqe);
- }
- LIST_REMOVE(scb, collision_links);
-}
-
-/*
- * Get a free scb. If there are none, see if we can allocate a new SCB.
- */
-struct scb *
-ahd_get_scb(struct ahd_softc *ahd, u_int col_idx)
-{
- struct scb *scb;
- int tries;
-
- tries = 0;
-look_again:
- TAILQ_FOREACH(scb, &ahd->scb_data.free_scbs, links.tqe) {
- if (AHD_GET_SCB_COL_IDX(ahd, scb) != col_idx) {
- ahd_rem_col_list(ahd, scb);
- goto found;
- }
- }
- if ((scb = LIST_FIRST(&ahd->scb_data.any_dev_free_scb_list)) == NULL) {
-
- if (tries++ != 0)
- return (NULL);
- ahd_alloc_scbs(ahd);
- goto look_again;
- }
- LIST_REMOVE(scb, links.le);
- if (col_idx != AHD_NEVER_COL_IDX
- && (scb->col_scb != NULL)
- && (scb->col_scb->flags & SCB_ACTIVE) == 0) {
- LIST_REMOVE(scb->col_scb, links.le);
- ahd_add_col_list(ahd, scb->col_scb, col_idx);
- }
-found:
- scb->flags |= SCB_ACTIVE;
- return (scb);
-}
-
-/*
- * Return an SCB resource to the free list.
- */
-void
-ahd_free_scb(struct ahd_softc *ahd, struct scb *scb)
-{
-
- /* Clean up for the next user */
- scb->flags = SCB_FLAG_NONE;
- scb->hscb->control = 0;
- ahd->scb_data.scbindex[scb->hscb->tag] = NULL;
-
- if (scb->col_scb == NULL) {
-
- /*
- * No collision possible. Just free normally.
- */
- LIST_INSERT_HEAD(&ahd->scb_data.any_dev_free_scb_list,
- scb, links.le);
- } else if ((scb->col_scb->flags & SCB_ON_COL_LIST) != 0) {
-
- /*
- * The SCB we might have collided with is on
- * a free collision list. Put both SCBs on
- * the generic list.
- */
- ahd_rem_col_list(ahd, scb->col_scb);
- LIST_INSERT_HEAD(&ahd->scb_data.any_dev_free_scb_list,
- scb, links.le);
- LIST_INSERT_HEAD(&ahd->scb_data.any_dev_free_scb_list,
- scb->col_scb, links.le);
- } else if ((scb->col_scb->flags
- & (SCB_PACKETIZED|SCB_ACTIVE)) == SCB_ACTIVE
- && (scb->col_scb->hscb->control & TAG_ENB) != 0) {
-
- /*
- * The SCB we might collide with on the next allocation
- * is still active in a non-packetized, tagged, context.
- * Put us on the SCB collision list.
- */
- ahd_add_col_list(ahd, scb,
- AHD_GET_SCB_COL_IDX(ahd, scb->col_scb));
- } else {
- /*
- * The SCB we might collide with on the next allocation
- * is either active in a packetized context, or free.
- * Since we can't collide, put this SCB on the generic
- * free list.
- */
- LIST_INSERT_HEAD(&ahd->scb_data.any_dev_free_scb_list,
- scb, links.le);
- }
-
- ahd_platform_scb_free(ahd, scb);
-}
-
-void
-ahd_alloc_scbs(struct ahd_softc *ahd)
-{
- struct scb_data *scb_data;
- struct scb *next_scb;
- struct hardware_scb *hscb;
- struct map_node *hscb_map;
- struct map_node *sg_map;
- struct map_node *sense_map;
- uint8_t *segs;
- uint8_t *sense_data;
- bus_addr_t hscb_busaddr;
- bus_addr_t sg_busaddr;
- bus_addr_t sense_busaddr;
- int newcount;
- int i;
-
- scb_data = &ahd->scb_data;
- if (scb_data->numscbs >= AHD_SCB_MAX_ALLOC)
- /* Can't allocate any more */
- return;
-
- if (scb_data->scbs_left != 0) {
- int offset;
-
- offset = (PAGE_SIZE / sizeof(*hscb)) - scb_data->scbs_left;
- hscb_map = SLIST_FIRST(&scb_data->hscb_maps);
- hscb = &((struct hardware_scb *)hscb_map->vaddr)[offset];
- hscb_busaddr = hscb_map->physaddr + (offset * sizeof(*hscb));
- } else {
- hscb_map = malloc(sizeof(*hscb_map), M_DEVBUF, M_NOWAIT);
-
- if (hscb_map == NULL)
- return;
-
- /* Allocate the next batch of hardware SCBs */
- if (ahd_dmamem_alloc(ahd, scb_data->hscb_dmat,
- (void **)&hscb_map->vaddr,
- BUS_DMA_NOWAIT, &hscb_map->dmamap) != 0) {
- free(hscb_map, M_DEVBUF);
- return;
- }
-
- SLIST_INSERT_HEAD(&scb_data->hscb_maps, hscb_map, links);
-
- ahd_dmamap_load(ahd, scb_data->hscb_dmat, hscb_map->dmamap,
- hscb_map->vaddr, PAGE_SIZE, ahd_dmamap_cb,
- &hscb_map->physaddr, /*flags*/0);
-
- hscb = (struct hardware_scb *)hscb_map->vaddr;
- hscb_busaddr = hscb_map->physaddr;
- scb_data->scbs_left = PAGE_SIZE / sizeof(*hscb);
- }
-
- if (scb_data->sgs_left != 0) {
- int offset;
-
- offset = ahd_sglist_allocsize(ahd)
- - (scb_data->sgs_left * ahd_sglist_size(ahd));
- sg_map = SLIST_FIRST(&scb_data->sg_maps);
- segs = sg_map->vaddr + offset;
- sg_busaddr = sg_map->physaddr + offset;
- } else {
- sg_map = malloc(sizeof(*sg_map), M_DEVBUF, M_NOWAIT);
-
- if (sg_map == NULL)
- return;
-
- /* Allocate the next batch of S/G lists */
- if (ahd_dmamem_alloc(ahd, scb_data->sg_dmat,
- (void **)&sg_map->vaddr,
- BUS_DMA_NOWAIT, &sg_map->dmamap) != 0) {
- free(sg_map, M_DEVBUF);
- return;
- }
-
- SLIST_INSERT_HEAD(&scb_data->sg_maps, sg_map, links);
-
- ahd_dmamap_load(ahd, scb_data->sg_dmat, sg_map->dmamap,
- sg_map->vaddr, ahd_sglist_allocsize(ahd),
- ahd_dmamap_cb, &sg_map->physaddr, /*flags*/0);
-
- segs = sg_map->vaddr;
- sg_busaddr = sg_map->physaddr;
- scb_data->sgs_left =
- ahd_sglist_allocsize(ahd) / ahd_sglist_size(ahd);
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_MEMORY)
- printf("Mapped SG data\n");
-#endif
- }
-
- if (scb_data->sense_left != 0) {
- int offset;
-
- offset = PAGE_SIZE - (AHD_SENSE_BUFSIZE * scb_data->sense_left);
- sense_map = SLIST_FIRST(&scb_data->sense_maps);
- sense_data = sense_map->vaddr + offset;
- sense_busaddr = sense_map->physaddr + offset;
- } else {
- sense_map = malloc(sizeof(*sense_map), M_DEVBUF, M_NOWAIT);
-
- if (sense_map == NULL)
- return;
-
- /* Allocate the next batch of sense buffers */
- if (ahd_dmamem_alloc(ahd, scb_data->sense_dmat,
- (void **)&sense_map->vaddr,
- BUS_DMA_NOWAIT, &sense_map->dmamap) != 0) {
- free(sense_map, M_DEVBUF);
- return;
- }
-
- SLIST_INSERT_HEAD(&scb_data->sense_maps, sense_map, links);
-
- ahd_dmamap_load(ahd, scb_data->sense_dmat, sense_map->dmamap,
- sense_map->vaddr, PAGE_SIZE, ahd_dmamap_cb,
- &sense_map->physaddr, /*flags*/0);
-
- sense_data = sense_map->vaddr;
- sense_busaddr = sense_map->physaddr;
- scb_data->sense_left = PAGE_SIZE / AHD_SENSE_BUFSIZE;
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_MEMORY)
- printf("Mapped sense data\n");
-#endif
- }
-
- newcount = MIN(scb_data->sense_left, scb_data->scbs_left);
- newcount = MIN(newcount, scb_data->sgs_left);
- newcount = MIN(newcount, (AHD_SCB_MAX_ALLOC - scb_data->numscbs));
- scb_data->sense_left -= newcount;
- scb_data->scbs_left -= newcount;
- scb_data->sgs_left -= newcount;
- for (i = 0; i < newcount; i++) {
- u_int col_tag;
-
- struct scb_platform_data *pdata;
-#ifndef __linux__
- int error;
-#endif
- next_scb = (struct scb *)malloc(sizeof(*next_scb),
- M_DEVBUF, M_NOWAIT);
- if (next_scb == NULL)
- break;
-
- pdata = (struct scb_platform_data *)malloc(sizeof(*pdata),
- M_DEVBUF, M_NOWAIT);
- if (pdata == NULL) {
- free(next_scb, M_DEVBUF);
- break;
- }
- next_scb->platform_data = pdata;
- next_scb->hscb_map = hscb_map;
- next_scb->sg_map = sg_map;
- next_scb->sense_map = sense_map;
- next_scb->sg_list = segs;
- next_scb->sense_data = sense_data;
- next_scb->sense_busaddr = sense_busaddr;
- next_scb->hscb = hscb;
- hscb->hscb_busaddr = ahd_htole32(hscb_busaddr);
-
- /*
- * The sequencer always starts with the second entry.
- * The first entry is embedded in the scb.
- */
- next_scb->sg_list_busaddr = sg_busaddr;
- if ((ahd->flags & AHD_64BIT_ADDRESSING) != 0)
- next_scb->sg_list_busaddr
- += sizeof(struct ahd_dma64_seg);
- else
- next_scb->sg_list_busaddr += sizeof(struct ahd_dma_seg);
- next_scb->ahd_softc = ahd;
- next_scb->flags = SCB_FLAG_NONE;
-#ifndef __linux__
- error = ahd_dmamap_create(ahd, ahd->buffer_dmat, /*flags*/0,
- &next_scb->dmamap);
- if (error != 0) {
- free(next_scb, M_DEVBUF);
- free(pdata, M_DEVBUF);
- break;
- }
-#endif
- next_scb->hscb->tag = ahd_htole16(scb_data->numscbs);
- col_tag = scb_data->numscbs ^ 0x100;
- next_scb->col_scb = ahd_find_scb_by_tag(ahd, col_tag);
- if (next_scb->col_scb != NULL)
- next_scb->col_scb->col_scb = next_scb;
- ahd_free_scb(ahd, next_scb);
- hscb++;
- hscb_busaddr += sizeof(*hscb);
- segs += ahd_sglist_size(ahd);
- sg_busaddr += ahd_sglist_size(ahd);
- sense_data += AHD_SENSE_BUFSIZE;
- sense_busaddr += AHD_SENSE_BUFSIZE;
- scb_data->numscbs++;
- }
-}
-
-void
-ahd_controller_info(struct ahd_softc *ahd, char *buf)
-{
- const char *speed;
- const char *type;
- int len;
-
- len = sprintf(buf, "%s: ", ahd_chip_names[ahd->chip & AHD_CHIPID_MASK]);
- buf += len;
-
- speed = "Ultra320 ";
- if ((ahd->features & AHD_WIDE) != 0) {
- type = "Wide ";
- } else {
- type = "Single ";
- }
- len = sprintf(buf, "%s%sChannel %c, SCSI Id=%d, ",
- speed, type, ahd->channel, ahd->our_id);
- buf += len;
-
- sprintf(buf, "%s, %d SCBs", ahd->bus_description,
- ahd->scb_data.maxhscbs);
-}
-
-static const char *channel_strings[] = {
- "Primary Low",
- "Primary High",
- "Secondary Low",
- "Secondary High"
-};
-
-static const char *termstat_strings[] = {
- "Terminated Correctly",
- "Over Terminated",
- "Under Terminated",
- "Not Configured"
-};
-
-/*
- * Start the board, ready for normal operation
- */
-int
-ahd_init(struct ahd_softc *ahd)
-{
- uint8_t *base_vaddr;
- uint8_t *next_vaddr;
- bus_addr_t next_baddr;
- size_t driver_data_size;
- int i;
- int error;
- u_int warn_user;
- uint8_t current_sensing;
- uint8_t fstat;
-
- AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK);
-
- ahd->stack_size = ahd_probe_stack_size(ahd);
- ahd->saved_stack = malloc(ahd->stack_size * sizeof(uint16_t),
- M_DEVBUF, M_NOWAIT);
- if (ahd->saved_stack == NULL)
- return (ENOMEM);
-
- /*
- * Verify that the compiler hasn't over-agressively
- * padded important structures.
- */
- if (sizeof(struct hardware_scb) != 64)
- panic("Hardware SCB size is incorrect");
-
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_DEBUG_SEQUENCER) != 0)
- ahd->flags |= AHD_SEQUENCER_DEBUG;
-#endif
-
- /*
- * Default to allowing initiator operations.
- */
- ahd->flags |= AHD_INITIATORROLE;
-
- /*
- * Only allow target mode features if this unit has them enabled.
- */
- if ((AHD_TMODE_ENABLE & (0x1 << ahd->unit)) == 0)
- ahd->features &= ~AHD_TARGETMODE;
-
-#ifndef __linux__
- /* DMA tag for mapping buffers into device visible space. */
- if (ahd_dma_tag_create(ahd, ahd->parent_dmat, /*alignment*/1,
- /*boundary*/BUS_SPACE_MAXADDR_32BIT + 1,
- /*lowaddr*/BUS_SPACE_MAXADDR,
- /*highaddr*/BUS_SPACE_MAXADDR,
- /*filter*/NULL, /*filterarg*/NULL,
- /*maxsize*/(AHD_NSEG - 1) * PAGE_SIZE,
- /*nsegments*/AHD_NSEG,
- /*maxsegsz*/AHD_MAXTRANSFER_SIZE,
- /*flags*/BUS_DMA_ALLOCNOW,
- &ahd->buffer_dmat) != 0) {
- return (ENOMEM);
- }
-#endif
-
- ahd->init_level++;
-
- /*
- * DMA tag for our command fifos and other data in system memory
- * the card's sequencer must be able to access. For initiator
- * roles, we need to allocate space for the qoutfifo. When providing
- * for the target mode role, we must additionally provide space for
- * the incoming target command fifo.
- */
- driver_data_size = AHD_SCB_MAX * sizeof(uint16_t)
- + sizeof(struct hardware_scb);
- if ((ahd->features & AHD_TARGETMODE) != 0)
- driver_data_size += AHD_TMODE_CMDS * sizeof(struct target_cmd);
- if ((ahd->bugs & AHD_PKT_BITBUCKET_BUG) != 0)
- driver_data_size += PKT_OVERRUN_BUFSIZE;
- if (ahd_dma_tag_create(ahd, ahd->parent_dmat, /*alignment*/1,
- /*boundary*/BUS_SPACE_MAXADDR_32BIT + 1,
- /*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
- /*highaddr*/BUS_SPACE_MAXADDR,
- /*filter*/NULL, /*filterarg*/NULL,
- driver_data_size,
- /*nsegments*/1,
- /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT,
- /*flags*/0, &ahd->shared_data_dmat) != 0) {
- return (ENOMEM);
- }
-
- ahd->init_level++;
-
- /* Allocation of driver data */
- if (ahd_dmamem_alloc(ahd, ahd->shared_data_dmat,
- (void **)&base_vaddr,
- BUS_DMA_NOWAIT, &ahd->shared_data_dmamap) != 0) {
- return (ENOMEM);
- }
-
- ahd->init_level++;
-
- /* And permanently map it in */
- ahd_dmamap_load(ahd, ahd->shared_data_dmat, ahd->shared_data_dmamap,
- base_vaddr, driver_data_size, ahd_dmamap_cb,
- &ahd->shared_data_busaddr, /*flags*/0);
- ahd->qoutfifo = (uint16_t *)base_vaddr;
- next_vaddr = (uint8_t *)&ahd->qoutfifo[AHD_QOUT_SIZE];
- next_baddr = ahd->shared_data_busaddr + AHD_QOUT_SIZE*sizeof(uint16_t);
- if ((ahd->features & AHD_TARGETMODE) != 0) {
- ahd->targetcmds = (struct target_cmd *)next_vaddr;
- next_vaddr += AHD_TMODE_CMDS * sizeof(struct target_cmd);
- next_baddr += AHD_TMODE_CMDS * sizeof(struct target_cmd);
- }
-
- if ((ahd->bugs & AHD_PKT_BITBUCKET_BUG) != 0) {
- ahd->overrun_buf = next_vaddr;
- next_vaddr += PKT_OVERRUN_BUFSIZE;
- next_baddr += PKT_OVERRUN_BUFSIZE;
- }
-
- /*
- * We need one SCB to serve as the "next SCB". Since the
- * tag identifier in this SCB will never be used, there is
- * no point in using a valid HSCB tag from an SCB pulled from
- * the standard free pool. So, we allocate this "sentinel"
- * specially from the DMA safe memory chunk used for the QOUTFIFO.
- */
- ahd->next_queued_hscb = (struct hardware_scb *)next_vaddr;
- ahd->next_queued_hscb->hscb_busaddr = next_baddr;
-
- ahd->init_level++;
-
- /* Allocate SCB data now that buffer_dmat is initialized */
- if (ahd_init_scbdata(ahd) != 0)
- return (ENOMEM);
-
- if ((ahd->flags & AHD_INITIATORROLE) == 0)
- ahd->flags &= ~AHD_RESET_BUS_A;
-
- /*
- * Before committing these settings to the chip, give
- * the OSM one last chance to modify our configuration.
- */
- ahd_platform_init(ahd);
-
- /* Bring up the chip. */
- ahd_chip_init(ahd);
-
- AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK);
-
- if ((ahd->flags & AHD_CURRENT_SENSING) == 0)
- goto init_done;
-
- /*
- * Verify termination based on current draw and
- * warn user if the bus is over/under terminated.
- */
- error = ahd_write_flexport(ahd, FLXADDR_ROMSTAT_CURSENSECTL,
- CURSENSE_ENB);
- if (error != 0) {
- printf("%s: current sensing timeout 1\n", ahd_name(ahd));
- goto init_done;
- }
- for (i = 20, fstat = FLX_FSTAT_BUSY;
- (fstat & FLX_FSTAT_BUSY) != 0 && i; i--) {
- error = ahd_read_flexport(ahd, FLXADDR_FLEXSTAT, &fstat);
- if (error != 0) {
- printf("%s: current sensing timeout 2\n",
- ahd_name(ahd));
- goto init_done;
- }
- }
- if (i == 0) {
- printf("%s: Timedout during current-sensing test\n",
- ahd_name(ahd));
- goto init_done;
- }
-
- /* Latch Current Sensing status. */
- error = ahd_read_flexport(ahd, FLXADDR_CURRENT_STAT, ¤t_sensing);
- if (error != 0) {
- printf("%s: current sensing timeout 3\n", ahd_name(ahd));
- goto init_done;
- }
-
- /* Diable current sensing. */
- ahd_write_flexport(ahd, FLXADDR_ROMSTAT_CURSENSECTL, 0);
-
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_TERMCTL) != 0) {
- printf("%s: current_sensing == 0x%x\n",
- ahd_name(ahd), current_sensing);
- }
-#endif
- warn_user = 0;
- for (i = 0; i < 4; i++, current_sensing >>= FLX_CSTAT_SHIFT) {
- u_int term_stat;
-
- term_stat = (current_sensing & FLX_CSTAT_MASK);
- switch (term_stat) {
- case FLX_CSTAT_OVER:
- case FLX_CSTAT_UNDER:
- warn_user++;
- case FLX_CSTAT_INVALID:
- case FLX_CSTAT_OKAY:
- if (warn_user == 0 && bootverbose == 0)
- break;
- printf("%s: %s Channel %s\n", ahd_name(ahd),
- channel_strings[i], termstat_strings[term_stat]);
- break;
- }
- }
- if (warn_user) {
- printf("%s: WARNING. Termination is not configured correctly.\n"
- "%s: WARNING. SCSI bus operations may FAIL.\n",
- ahd_name(ahd), ahd_name(ahd));
- }
-init_done:
- ahd_restart(ahd);
- ahd_timer_reset(&ahd->stat_timer, AHD_STAT_UPDATE_US,
- ahd_stat_timer, ahd);
- return (0);
-}
-
-/*
- * (Re)initialize chip state after a chip reset.
- */
-static void
-ahd_chip_init(struct ahd_softc *ahd)
-{
- uint32_t busaddr;
- u_int sxfrctl1;
- u_int scsiseq_template;
- u_int wait;
- u_int i;
- u_int target;
-
- ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
- /*
- * Take the LED out of diagnostic mode
- */
- ahd_outb(ahd, SBLKCTL, ahd_inb(ahd, SBLKCTL) & ~(DIAGLEDEN|DIAGLEDON));
-
- /*
- * Return HS_MAILBOX to its default value.
- */
- ahd->hs_mailbox = 0;
- ahd_outb(ahd, HS_MAILBOX, 0);
-
- /* Set the SCSI Id, SXFRCTL0, SXFRCTL1, and SIMODE1. */
- ahd_outb(ahd, IOWNID, ahd->our_id);
- ahd_outb(ahd, TOWNID, ahd->our_id);
- sxfrctl1 = (ahd->flags & AHD_TERM_ENB_A) != 0 ? STPWEN : 0;
- sxfrctl1 |= (ahd->flags & AHD_SPCHK_ENB_A) != 0 ? ENSPCHK : 0;
- if ((ahd->bugs & AHD_LONG_SETIMO_BUG)
- && (ahd->seltime != STIMESEL_MIN)) {
- /*
- * The selection timer duration is twice as long
- * as it should be. Halve it by adding "1" to
- * the user specified setting.
- */
- sxfrctl1 |= ahd->seltime + STIMESEL_BUG_ADJ;
- } else {
- sxfrctl1 |= ahd->seltime;
- }
-
- ahd_outb(ahd, SXFRCTL0, DFON);
- ahd_outb(ahd, SXFRCTL1, sxfrctl1|ahd->seltime|ENSTIMER|ACTNEGEN);
- ahd_outb(ahd, SIMODE1, ENSELTIMO|ENSCSIRST|ENSCSIPERR);
-
- /*
- * Now that termination is set, wait for up
- * to 500ms for our transceivers to settle. If
- * the adapter does not have a cable attached,
- * the tranceivers may never settle, so don't
- * complain if we fail here.
- */
- for (wait = 10000;
- (ahd_inb(ahd, SBLKCTL) & (ENAB40|ENAB20)) == 0 && wait;
- wait--)
- ahd_delay(100);
-
- /* Clear any false bus resets due to the transceivers settling */
- ahd_outb(ahd, CLRSINT1, CLRSCSIRSTI);
- ahd_outb(ahd, CLRINT, CLRSCSIINT);
-
- /* Initialize mode specific S/G state. */
- for (i = 0; i < 2; i++) {
- ahd_set_modes(ahd, AHD_MODE_DFF0 + i, AHD_MODE_DFF0 + i);
- ahd_outb(ahd, LONGJMP_ADDR + 1, INVALID_ADDR);
- ahd_outw(ahd, LONGJMP_SCB, SCB_LIST_NULL);
- ahd_outb(ahd, SG_STATE, 0);
- ahd_outb(ahd, CLRSEQINTSRC, 0xFF);
- ahd_outb(ahd, SEQIMODE,
- ENSAVEPTRS|ENCFG4DATA|ENCFG4ISTAT
- |ENCFG4TSTAT|ENCFG4ICMD|ENCFG4TCMD);
- }
-
- ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG);
- ahd_outb(ahd, DSCOMMAND0, ahd_inb(ahd, DSCOMMAND0)|MPARCKEN|CACHETHEN);
- ahd_outb(ahd, DFF_THRSH, RD_DFTHRSH_75|WR_DFTHRSH_75);
- ahd_outb(ahd, SIMODE0, ENIOERR|ENOVERRUN);
- ahd_outb(ahd, SIMODE3, ENNTRAMPERR|ENOSRAMPERR);
- if ((ahd->bugs & AHD_BUSFREEREV_BUG) != 0) {
- ahd_outb(ahd, OPTIONMODE, AUTOACKEN|AUTO_MSGOUT_DE);
- } else {
- ahd_outb(ahd, OPTIONMODE, AUTOACKEN|BUSFREEREV|AUTO_MSGOUT_DE);
- }
- ahd_outb(ahd, SCSCHKN, CURRFIFODEF|WIDERESEN);
- if ((ahd->chip & AHD_BUS_MASK) == AHD_PCIX)
- /*
- * Do not issue a target abort when a split completion
- * error occurs. Let our PCIX interrupt handler deal
- * with it instead. H2A4 Razor #625
- */
- ahd_outb(ahd, PCIXCTL, ahd_inb(ahd, PCIXCTL) | SPLTSTADIS);
-
- if ((ahd->bugs & AHD_LQOOVERRUN_BUG) != 0)
- ahd_outb(ahd, LQOSCSCTL, LQONOCHKOVER);
-
- /*
- * Tweak IOCELL settings.
- */
- if ((ahd->flags & AHD_HP_BOARD) != 0) {
- for (i = 0; i < NUMDSPS; i++) {
- ahd_outb(ahd, DSPSELECT, i);
- ahd_outb(ahd, WRTBIASCTL, WRTBIASCTL_HP_DEFAULT);
- }
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MISC) != 0)
- printf("%s: WRTBIASCTL now 0x%x\n", ahd_name(ahd),
- WRTBIASCTL_HP_DEFAULT);
-#endif
- }
- ahd_setup_iocell_workaround(ahd);
-
- /*
- * Enable LQI Manager interrupts.
- */
- ahd_outb(ahd, LQIMODE1, ENLQIPHASE_LQ|ENLQIPHASE_NLQ|ENLIQABORT
- | ENLQICRCI_LQ|ENLQICRCI_NLQ|ENLQIBADLQI
- | ENLQIOVERI_LQ|ENLQIOVERI_NLQ);
- ahd_outb(ahd, LQOMODE0, ENLQOATNLQ|ENLQOATNPKT|ENLQOTCRC);
- /*
- * An interrupt from LQOBUSFREE is made redundant by the
- * BUSFREE interrupt. We choose to have the sequencer catch
- * LQOPHCHGINPKT errors manually for the command phase at the
- * start of a packetized selection case.
- ahd_outb(ahd, LQOMODE1, ENLQOBUSFREE|ENLQOPHACHGINPKT);
- */
- ahd_outb(ahd, LQOMODE1, 0);
-
- /*
- * Setup sequencer interrupt handlers.
- */
- ahd_outw(ahd, INTVEC1_ADDR, ahd_resolve_seqaddr(ahd, LABEL_seq_isr));
- ahd_outw(ahd, INTVEC2_ADDR, ahd_resolve_seqaddr(ahd, LABEL_timer_isr));
-
- /*
- * Setup SCB Offset registers.
- */
- if ((ahd->bugs & AHD_PKT_LUN_BUG) != 0) {
- ahd_outb(ahd, LUNPTR, offsetof(struct hardware_scb,
- pkt_long_lun));
- } else {
- ahd_outb(ahd, LUNPTR, offsetof(struct hardware_scb, lun));
- }
- ahd_outb(ahd, CMDLENPTR, offsetof(struct hardware_scb, cdb_len));
- ahd_outb(ahd, ATTRPTR, offsetof(struct hardware_scb, task_attribute));
- ahd_outb(ahd, FLAGPTR, offsetof(struct hardware_scb, task_management));
- ahd_outb(ahd, CMDPTR, offsetof(struct hardware_scb,
- shared_data.idata.cdb));
- ahd_outb(ahd, QNEXTPTR,
- offsetof(struct hardware_scb, next_hscb_busaddr));
- ahd_outb(ahd, ABRTBITPTR, MK_MESSAGE_BIT_OFFSET);
- ahd_outb(ahd, ABRTBYTEPTR, offsetof(struct hardware_scb, control));
- if ((ahd->bugs & AHD_PKT_LUN_BUG) != 0) {
- ahd_outb(ahd, LUNLEN,
- sizeof(ahd->next_queued_hscb->pkt_long_lun) - 1);
- } else {
- ahd_outb(ahd, LUNLEN, sizeof(ahd->next_queued_hscb->lun) - 1);
- }
- ahd_outb(ahd, CDBLIMIT, SCB_CDB_LEN_PTR - 1);
- ahd_outb(ahd, MAXCMD, 0xFF);
- ahd_outb(ahd, SCBAUTOPTR,
- AUSCBPTR_EN | offsetof(struct hardware_scb, tag));
-
- /* We haven't been enabled for target mode yet. */
- ahd_outb(ahd, MULTARGID, 0);
- ahd_outb(ahd, MULTARGID + 1, 0);
-
- ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
- /* Initialize the negotiation table. */
- if ((ahd->features & AHD_NEW_IOCELL_OPTS) == 0) {
- /*
- * Clear the spare bytes in the neg table to avoid
- * spurious parity errors.
- */
- for (target = 0; target < AHD_NUM_TARGETS; target++) {
- ahd_outb(ahd, NEGOADDR, target);
- ahd_outb(ahd, ANNEXCOL, AHD_ANNEXCOL_PER_DEV0);
- for (i = 0; i < AHD_NUM_PER_DEV_ANNEXCOLS; i++)
- ahd_outb(ahd, ANNEXDAT, 0);
- }
- }
- for (target = 0; target < AHD_NUM_TARGETS; target++) {
- struct ahd_devinfo devinfo;
- struct ahd_initiator_tinfo *tinfo;
- struct ahd_tmode_tstate *tstate;
-
- tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
- target, &tstate);
- ahd_compile_devinfo(&devinfo, ahd->our_id,
- target, CAM_LUN_WILDCARD,
- 'A', ROLE_INITIATOR);
- ahd_update_neg_table(ahd, &devinfo, &tinfo->curr);
- }
-
- ahd_outb(ahd, CLRSINT3, NTRAMPERR|OSRAMPERR);
- ahd_outb(ahd, CLRINT, CLRSCSIINT);
-
- /*
- * Always enable abort on incoming L_Qs if this feature is
- * supported. We use this to catch invalid SCB references.
- */
- if ((ahd->bugs & AHD_ABORT_LQI_BUG) == 0)
- ahd_outb(ahd, LQCTL1, ABORTPENDING);
- else
- ahd_outb(ahd, LQCTL1, 0);
-
- /* All of our queues are empty */
- ahd->qoutfifonext = 0;
- ahd->qoutfifonext_valid_tag = QOUTFIFO_ENTRY_VALID_LE;
- ahd_outb(ahd, QOUTFIFO_ENTRY_VALID_TAG, QOUTFIFO_ENTRY_VALID >> 8);
- for (i = 0; i < AHD_QOUT_SIZE; i++)
- ahd->qoutfifo[i] = 0;
- ahd_sync_qoutfifo(ahd, BUS_DMASYNC_PREREAD);
-
- ahd->qinfifonext = 0;
- for (i = 0; i < AHD_QIN_SIZE; i++)
- ahd->qinfifo[i] = SCB_LIST_NULL;
-
- if ((ahd->features & AHD_TARGETMODE) != 0) {
- /* All target command blocks start out invalid. */
- for (i = 0; i < AHD_TMODE_CMDS; i++)
- ahd->targetcmds[i].cmd_valid = 0;
- ahd_sync_tqinfifo(ahd, BUS_DMASYNC_PREREAD);
- ahd->tqinfifonext = 1;
- ahd_outb(ahd, KERNEL_TQINPOS, ahd->tqinfifonext - 1);
- ahd_outb(ahd, TQINPOS, ahd->tqinfifonext);
- }
-
- /* Initialize Scratch Ram. */
- ahd_outb(ahd, SEQ_FLAGS, 0);
- ahd_outb(ahd, SEQ_FLAGS2, 0);
-
- /* We don't have any waiting selections */
- ahd_outw(ahd, WAITING_TID_HEAD, SCB_LIST_NULL);
- ahd_outw(ahd, WAITING_TID_TAIL, SCB_LIST_NULL);
- for (i = 0; i < AHD_NUM_TARGETS; i++)
- ahd_outw(ahd, WAITING_SCB_TAILS + (2 * i), SCB_LIST_NULL);
-
- /*
- * Nobody is waiting to be DMAed into the QOUTFIFO.
- */
- ahd_outw(ahd, COMPLETE_SCB_HEAD, SCB_LIST_NULL);
- ahd_outw(ahd, COMPLETE_SCB_DMAINPROG_HEAD, SCB_LIST_NULL);
- ahd_outw(ahd, COMPLETE_DMA_SCB_HEAD, SCB_LIST_NULL);
-
- /*
- * The Freeze Count is 0.
- */
- ahd_outw(ahd, QFREEZE_COUNT, 0);
-
- /*
- * Tell the sequencer where it can find our arrays in memory.
- */
- busaddr = ahd->shared_data_busaddr;
- ahd_outb(ahd, SHARED_DATA_ADDR, busaddr & 0xFF);
- ahd_outb(ahd, SHARED_DATA_ADDR + 1, (busaddr >> 8) & 0xFF);
- ahd_outb(ahd, SHARED_DATA_ADDR + 2, (busaddr >> 16) & 0xFF);
- ahd_outb(ahd, SHARED_DATA_ADDR + 3, (busaddr >> 24) & 0xFF);
- ahd_outb(ahd, QOUTFIFO_NEXT_ADDR, busaddr & 0xFF);
- ahd_outb(ahd, QOUTFIFO_NEXT_ADDR + 1, (busaddr >> 8) & 0xFF);
- ahd_outb(ahd, QOUTFIFO_NEXT_ADDR + 2, (busaddr >> 16) & 0xFF);
- ahd_outb(ahd, QOUTFIFO_NEXT_ADDR + 3, (busaddr >> 24) & 0xFF);
-
- /*
- * Setup the allowed SCSI Sequences based on operational mode.
- * If we are a target, we'll enable select in operations once
- * we've had a lun enabled.
- */
- scsiseq_template = ENAUTOATNP;
- if ((ahd->flags & AHD_INITIATORROLE) != 0)
- scsiseq_template |= ENRSELI;
- ahd_outb(ahd, SCSISEQ_TEMPLATE, scsiseq_template);
-
- /* There are no busy SCBs yet. */
- for (target = 0; target < AHD_NUM_TARGETS; target++) {
- int lun;
-
- for (lun = 0; lun < AHD_NUM_LUNS_NONPKT; lun++)
- ahd_unbusy_tcl(ahd, BUILD_TCL_RAW(target, 'A', lun));
- }
-
- /*
- * Initialize the group code to command length table.
- * Vendor Unique codes are set to 0 so we only capture
- * the first byte of the cdb. These can be overridden
- * when target mode is enabled.
- */
- ahd_outb(ahd, CMDSIZE_TABLE, 5);
- ahd_outb(ahd, CMDSIZE_TABLE + 1, 9);
- ahd_outb(ahd, CMDSIZE_TABLE + 2, 9);
- ahd_outb(ahd, CMDSIZE_TABLE + 3, 0);
- ahd_outb(ahd, CMDSIZE_TABLE + 4, 15);
- ahd_outb(ahd, CMDSIZE_TABLE + 5, 11);
- ahd_outb(ahd, CMDSIZE_TABLE + 6, 0);
- ahd_outb(ahd, CMDSIZE_TABLE + 7, 0);
-
- /* Tell the sequencer of our initial queue positions */
- ahd_set_modes(ahd, AHD_MODE_CCHAN, AHD_MODE_CCHAN);
- ahd_outb(ahd, QOFF_CTLSTA, SCB_QSIZE_512);
- ahd->qinfifonext = 0;
- ahd_set_hnscb_qoff(ahd, ahd->qinfifonext);
- ahd_set_hescb_qoff(ahd, 0);
- ahd_set_snscb_qoff(ahd, 0);
- ahd_set_sescb_qoff(ahd, 0);
- ahd_set_sdscb_qoff(ahd, 0);
-
- /*
- * Tell the sequencer which SCB will be the next one it receives.
- */
- busaddr = ahd_le32toh(ahd->next_queued_hscb->hscb_busaddr);
- ahd_outb(ahd, NEXT_QUEUED_SCB_ADDR + 0, busaddr & 0xFF);
- ahd_outb(ahd, NEXT_QUEUED_SCB_ADDR + 1, (busaddr >> 8) & 0xFF);
- ahd_outb(ahd, NEXT_QUEUED_SCB_ADDR + 2, (busaddr >> 16) & 0xFF);
- ahd_outb(ahd, NEXT_QUEUED_SCB_ADDR + 3, (busaddr >> 24) & 0xFF);
-
- /*
- * Default to coalessing disabled.
- */
- ahd_outw(ahd, INT_COALESSING_CMDCOUNT, 0);
- ahd_outw(ahd, CMDS_PENDING, 0);
- ahd_update_coalessing_values(ahd, ahd->int_coalessing_timer,
- ahd->int_coalessing_maxcmds,
- ahd->int_coalessing_mincmds);
- ahd_enable_coalessing(ahd, FALSE);
-
- ahd_loadseq(ahd);
- ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
-}
-
-/*
- * Setup default device and controller settings.
- * This should only be called if our probe has
- * determined that no configuration data is available.
- */
-int
-ahd_default_config(struct ahd_softc *ahd)
-{
- int targ;
-
- ahd->our_id = 7;
-
- /*
- * Allocate a tstate to house information for our
- * initiator presence on the bus as well as the user
- * data for any target mode initiator.
- */
- if (ahd_alloc_tstate(ahd, ahd->our_id, 'A') == NULL) {
- printf("%s: unable to allocate ahd_tmode_tstate. "
- "Failing attach\n", ahd_name(ahd));
- return (ENOMEM);
- }
-
- for (targ = 0; targ < AHD_NUM_TARGETS; targ++) {
- struct ahd_devinfo devinfo;
- struct ahd_initiator_tinfo *tinfo;
- struct ahd_tmode_tstate *tstate;
- uint16_t target_mask;
-
- tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
- targ, &tstate);
- /*
- * We support SPC2 and SPI4.
- */
- tinfo->user.protocol_version = 4;
- tinfo->user.transport_version = 4;
-
- target_mask = 0x01 << targ;
- ahd->user_discenable |= target_mask;
- tstate->discenable |= target_mask;
- ahd->user_tagenable |= target_mask;
-#ifdef AHD_FORCE_160
- tinfo->user.period = AHD_SYNCRATE_DT;
-#else
- tinfo->user.period = AHD_SYNCRATE_160;
-#endif
- tinfo->user.offset= ~0;
- tinfo->user.ppr_options = MSG_EXT_PPR_RD_STRM
- | MSG_EXT_PPR_WR_FLOW
- | MSG_EXT_PPR_HOLD_MCS
- | MSG_EXT_PPR_IU_REQ
- | MSG_EXT_PPR_QAS_REQ
- | MSG_EXT_PPR_DT_REQ;
- if ((ahd->features & AHD_RTI) != 0)
- tinfo->user.ppr_options |= MSG_EXT_PPR_RTI;
-
- tinfo->user.width = MSG_EXT_WDTR_BUS_16_BIT;
-
- /*
- * Start out Async/Narrow/Untagged and with
- * conservative protocol support.
- */
- tinfo->goal.protocol_version = 2;
- tinfo->goal.transport_version = 2;
- tinfo->curr.protocol_version = 2;
- tinfo->curr.transport_version = 2;
- ahd_compile_devinfo(&devinfo, ahd->our_id,
- targ, CAM_LUN_WILDCARD,
- 'A', ROLE_INITIATOR);
- tstate->tagenable &= ~target_mask;
- ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
- AHD_TRANS_CUR|AHD_TRANS_GOAL, /*paused*/TRUE);
- ahd_set_syncrate(ahd, &devinfo, /*period*/0, /*offset*/0,
- /*ppr_options*/0, AHD_TRANS_CUR|AHD_TRANS_GOAL,
- /*paused*/TRUE);
- }
- return (0);
-}
-
-/*
- * Parse device configuration information.
- */
-int
-ahd_parse_cfgdata(struct ahd_softc *ahd, struct seeprom_config *sc)
-{
- int targ;
- int max_targ;
-
- max_targ = sc->max_targets & CFMAXTARG;
- ahd->our_id = sc->brtime_id & CFSCSIID;
-
- /*
- * Allocate a tstate to house information for our
- * initiator presence on the bus as well as the user
- * data for any target mode initiator.
- */
- if (ahd_alloc_tstate(ahd, ahd->our_id, 'A') == NULL) {
- printf("%s: unable to allocate ahd_tmode_tstate. "
- "Failing attach\n", ahd_name(ahd));
- return (ENOMEM);
- }
-
- for (targ = 0; targ < max_targ; targ++) {
- struct ahd_devinfo devinfo;
- struct ahd_initiator_tinfo *tinfo;
- struct ahd_transinfo *user_tinfo;
- struct ahd_tmode_tstate *tstate;
- uint16_t target_mask;
-
- tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
- targ, &tstate);
- user_tinfo = &tinfo->user;
-
- /*
- * We support SPC2 and SPI4.
- */
- tinfo->user.protocol_version = 4;
- tinfo->user.transport_version = 4;
-
- target_mask = 0x01 << targ;
- ahd->user_discenable &= ~target_mask;
- tstate->discenable &= ~target_mask;
- ahd->user_tagenable &= ~target_mask;
- if (sc->device_flags[targ] & CFDISC) {
- tstate->discenable |= target_mask;
- ahd->user_discenable |= target_mask;
- ahd->user_tagenable |= target_mask;
- } else {
- /*
- * Cannot be packetized without disconnection.
- */
- sc->device_flags[targ] &= ~CFPACKETIZED;
- }
-
- user_tinfo->ppr_options = 0;
- user_tinfo->period = (sc->device_flags[targ] & CFXFER);
- if (user_tinfo->period < CFXFER_ASYNC) {
- if (user_tinfo->period <= AHD_PERIOD_10MHz)
- user_tinfo->ppr_options |= MSG_EXT_PPR_DT_REQ;
- user_tinfo->offset = MAX_OFFSET;
- } else {
- user_tinfo->offset = 0;
- user_tinfo->period = AHD_ASYNC_XFER_PERIOD;
- }
-#ifdef AHD_FORCE_160
- if (user_tinfo->period <= AHD_SYNCRATE_160)
- user_tinfo->period = AHD_SYNCRATE_DT;
-#endif
-
- if ((sc->device_flags[targ] & CFPACKETIZED) != 0) {
- user_tinfo->ppr_options |= MSG_EXT_PPR_RD_STRM
- | MSG_EXT_PPR_WR_FLOW
- | MSG_EXT_PPR_HOLD_MCS
- | MSG_EXT_PPR_IU_REQ;
- if ((ahd->features & AHD_RTI) != 0)
- user_tinfo->ppr_options |= MSG_EXT_PPR_RTI;
- }
-
- if ((sc->device_flags[targ] & CFQAS) != 0)
- user_tinfo->ppr_options |= MSG_EXT_PPR_QAS_REQ;
-
- if ((sc->device_flags[targ] & CFWIDEB) != 0)
- user_tinfo->width = MSG_EXT_WDTR_BUS_16_BIT;
- else
- user_tinfo->width = MSG_EXT_WDTR_BUS_8_BIT;
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MISC) != 0)
- printf("(%d): %x:%x:%x:%x\n", targ, user_tinfo->width,
- user_tinfo->period, user_tinfo->offset,
- user_tinfo->ppr_options);
-#endif
- /*
- * Start out Async/Narrow/Untagged and with
- * conservative protocol support.
- */
- tstate->tagenable &= ~target_mask;
- tinfo->goal.protocol_version = 2;
- tinfo->goal.transport_version = 2;
- tinfo->curr.protocol_version = 2;
- tinfo->curr.transport_version = 2;
- ahd_compile_devinfo(&devinfo, ahd->our_id,
- targ, CAM_LUN_WILDCARD,
- 'A', ROLE_INITIATOR);
- ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
- AHD_TRANS_CUR|AHD_TRANS_GOAL, /*paused*/TRUE);
- ahd_set_syncrate(ahd, &devinfo, /*period*/0, /*offset*/0,
- /*ppr_options*/0, AHD_TRANS_CUR|AHD_TRANS_GOAL,
- /*paused*/TRUE);
- }
-
- ahd->flags &= ~AHD_SPCHK_ENB_A;
- if (sc->bios_control & CFSPARITY)
- ahd->flags |= AHD_SPCHK_ENB_A;
-
- ahd->flags &= ~AHD_RESET_BUS_A;
- if (sc->bios_control & CFRESETB)
- ahd->flags |= AHD_RESET_BUS_A;
-
- ahd->flags &= ~AHD_EXTENDED_TRANS_A;
- if (sc->bios_control & CFEXTEND)
- ahd->flags |= AHD_EXTENDED_TRANS_A;
-
- ahd->flags &= ~AHD_BIOS_ENABLED;
- if ((sc->bios_control & CFBIOSSTATE) == CFBS_ENABLED)
- ahd->flags |= AHD_BIOS_ENABLED;
-
- ahd->flags &= ~AHD_STPWLEVEL_A;
- if ((sc->adapter_control & CFSTPWLEVEL) != 0)
- ahd->flags |= AHD_STPWLEVEL_A;
-
- return (0);
-}
-
-void
-ahd_intr_enable(struct ahd_softc *ahd, int enable)
-{
- u_int hcntrl;
-
- hcntrl = ahd_inb(ahd, HCNTRL);
- hcntrl &= ~INTEN;
- ahd->pause &= ~INTEN;
- ahd->unpause &= ~INTEN;
- if (enable) {
- hcntrl |= INTEN;
- ahd->pause |= INTEN;
- ahd->unpause |= INTEN;
- }
- ahd_outb(ahd, HCNTRL, hcntrl);
-}
-
-void
-ahd_update_coalessing_values(struct ahd_softc *ahd, u_int timer, u_int maxcmds,
- u_int mincmds)
-{
- if (timer > AHD_TIMER_MAX_US)
- timer = AHD_TIMER_MAX_US;
- ahd->int_coalessing_timer = timer;
-
- if (maxcmds > AHD_INT_COALESSING_MAXCMDS_MAX)
- maxcmds = AHD_INT_COALESSING_MAXCMDS_MAX;
- if (mincmds > AHD_INT_COALESSING_MINCMDS_MAX)
- mincmds = AHD_INT_COALESSING_MINCMDS_MAX;
- ahd->int_coalessing_maxcmds = maxcmds;
- ahd_outw(ahd, INT_COALESSING_TIMER, timer / AHD_TIMER_US_PER_TICK);
- ahd_outb(ahd, INT_COALESSING_MAXCMDS, -maxcmds);
- ahd_outb(ahd, INT_COALESSING_MINCMDS, -mincmds);
-}
-
-void
-ahd_enable_coalessing(struct ahd_softc *ahd, int enable)
-{
-
- ahd->hs_mailbox &= ~ENINT_COALESS;
- if (enable)
- ahd->hs_mailbox |= ENINT_COALESS;
- ahd_outb(ahd, HS_MAILBOX, ahd->hs_mailbox);
- ahd_flush_device_writes(ahd);
- ahd_run_qoutfifo(ahd);
-}
-
-/*
- * Ensure that the card is paused in a location
- * outside of all critical sections and that all
- * pending work is completed prior to returning.
- * This routine should only be called from outside
- * an interrupt context.
- */
-void
-ahd_pause_and_flushwork(struct ahd_softc *ahd)
-{
- u_int intstat;
- u_int maxloops;
- int paused;
-
- maxloops = 1000;
- ahd->flags |= AHD_ALL_INTERRUPTS;
- intstat = 0;
- paused = FALSE;
- do {
- struct scb *waiting_scb;
-
- if (paused)
- ahd_unpause(ahd);
- ahd_intr(ahd);
- ahd_pause(ahd);
- paused = TRUE;
- ahd_clear_critical_section(ahd);
- if ((ahd_inb(ahd, SSTAT0) & (SELDO|SELINGO)) == 0)
- ahd_outb(ahd, SCSISEQ0,
- ahd_inb(ahd, SCSISEQ0) & ~ENSELO);
- /*
- * In the non-packetized case, the sequencer (for Rev A),
- * relies on ENSELO remaining set after SELDO. The hardware
- * auto-clears ENSELO in the packetized case.
- */
- waiting_scb = ahd_lookup_scb(ahd,
- ahd_inw(ahd, WAITING_TID_HEAD));
- if (waiting_scb != NULL
- && (waiting_scb->flags & SCB_PACKETIZED) == 0
- && (ahd_inb(ahd, SSTAT0) & (SELDO|SELINGO)) != 0)
- ahd_outb(ahd, SCSISEQ0,
- ahd_inb(ahd, SCSISEQ0) | ENSELO);
-
- if (intstat == 0xFF && (ahd->features & AHD_REMOVABLE) != 0)
- break;
- } while (--maxloops
- && (((intstat = ahd_inb(ahd, INTSTAT)) & INT_PEND) != 0
- || (ahd_inb(ahd, SSTAT0) & (SELDO|SELINGO))));
- if (maxloops == 0) {
- printf("Infinite interrupt loop, INTSTAT = %x",
- ahd_inb(ahd, INTSTAT));
- }
-
- ahd_flush_qoutfifo(ahd);
-
- ahd_platform_flushwork(ahd);
- ahd->flags &= ~AHD_ALL_INTERRUPTS;
-}
-
-int
-ahd_suspend(struct ahd_softc *ahd)
-{
-#if 0
- uint8_t *ptr;
- int i;
-
- ahd_pause_and_flushwork(ahd);
-
- if (LIST_FIRST(&ahd->pending_scbs) != NULL)
- return (EBUSY);
-
-#if AHD_TARGET_MODE
- /*
- * XXX What about ATIOs that have not yet been serviced?
- * Perhaps we should just refuse to be suspended if we
- * are acting in a target role.
- */
- if (ahd->pending_device != NULL)
- return (EBUSY);
-#endif
-
- /* Save volatile registers */
- ahd->suspend_state.channel[0].scsiseq = ahd_inb(ahd, SCSISEQ0);
- ahd->suspend_state.channel[0].sxfrctl0 = ahd_inb(ahd, SXFRCTL0);
- ahd->suspend_state.channel[0].sxfrctl1 = ahd_inb(ahd, SXFRCTL1);
- ahd->suspend_state.channel[0].simode0 = ahd_inb(ahd, SIMODE0);
- ahd->suspend_state.channel[0].simode1 = ahd_inb(ahd, SIMODE1);
- ahd->suspend_state.channel[0].seltimer = ahd_inb(ahd, SELTIMER);
- ahd->suspend_state.channel[0].seqctl = ahd_inb(ahd, SEQCTL0);
- ahd->suspend_state.dscommand0 = ahd_inb(ahd, DSCOMMAND0);
- ahd->suspend_state.dspcistatus = ahd_inb(ahd, DSPCISTATUS);
-
- if ((ahd->features & AHD_DT) != 0) {
- u_int sfunct;
-
- sfunct = ahd_inb(ahd, SFUNCT) & ~ALT_MODE;
- ahd_outb(ahd, SFUNCT, sfunct | ALT_MODE);
- ahd->suspend_state.optionmode = ahd_inb(ahd, OPTIONMODE);
- ahd_outb(ahd, SFUNCT, sfunct);
- ahd->suspend_state.crccontrol1 = ahd_inb(ahd, CRCCONTROL1);
- }
-
- if ((ahd->features & AHD_MULTI_FUNC) != 0)
- ahd->suspend_state.scbbaddr = ahd_inb(ahd, SCBBADDR);
-
- if ((ahd->features & AHD_ULTRA2) != 0)
- ahd->suspend_state.dff_thrsh = ahd_inb(ahd, DFF_THRSH);
-
- ptr = ahd->suspend_state.scratch_ram;
- for (i = 0; i < 64; i++)
- *ptr++ = ahd_inb(ahd, SRAM_BASE + i);
-
- if ((ahd->features & AHD_MORE_SRAM) != 0) {
- for (i = 0; i < 16; i++)
- *ptr++ = ahd_inb(ahd, TARG_OFFSET + i);
- }
-
- ptr = ahd->suspend_state.btt;
- for (i = 0;i < AHD_NUM_TARGETS; i++) {
- int j;
-
- for (j = 0;j < AHD_NUM_LUNS_NONPKT; j++) {
- u_int tcl;
-
- tcl = BUILD_TCL_RAW(i, 'A', j);
- *ptr = ahd_find_busy_tcl(ahd, tcl);
- }
- }
- ahd_shutdown(ahd);
-#endif
- return (0);
-}
-
-int
-ahd_resume(struct ahd_softc *ahd)
-{
-#if 0
- uint8_t *ptr;
- int i;
-
- ahd_reset(ahd);
-
- ahd_build_free_scb_list(ahd);
-
- /* Restore volatile registers */
- ahd_outb(ahd, SCSISEQ0, ahd->suspend_state.channel[0].scsiseq);
- ahd_outb(ahd, SXFRCTL0, ahd->suspend_state.channel[0].sxfrctl0);
- ahd_outb(ahd, SXFRCTL1, ahd->suspend_state.channel[0].sxfrctl1);
- ahd_outb(ahd, SIMODE0, ahd->suspend_state.channel[0].simode0);
- ahd_outb(ahd, SIMODE1, ahd->suspend_state.channel[0].simode1);
- ahd_outb(ahd, SELTIMER, ahd->suspend_state.channel[0].seltimer);
- ahd_outb(ahd, SEQCTL0, ahd->suspend_state.channel[0].seqctl);
- if ((ahd->features & AHD_ULTRA2) != 0)
- ahd_outb(ahd, SCSIID_ULTRA2, ahd->our_id);
- else
- ahd_outb(ahd, SCSIID, ahd->our_id);
-
- ahd_outb(ahd, DSCOMMAND0, ahd->suspend_state.dscommand0);
- ahd_outb(ahd, DSPCISTATUS, ahd->suspend_state.dspcistatus);
-
- if ((ahd->features & AHD_DT) != 0) {
- u_int sfunct;
-
- sfunct = ahd_inb(ahd, SFUNCT) & ~ALT_MODE;
- ahd_outb(ahd, SFUNCT, sfunct | ALT_MODE);
- ahd_outb(ahd, OPTIONMODE, ahd->suspend_state.optionmode);
- ahd_outb(ahd, SFUNCT, sfunct);
- ahd_outb(ahd, CRCCONTROL1, ahd->suspend_state.crccontrol1);
- }
-
- if ((ahd->features & AHD_MULTI_FUNC) != 0)
- ahd_outb(ahd, SCBBADDR, ahd->suspend_state.scbbaddr);
-
- if ((ahd->features & AHD_ULTRA2) != 0)
- ahd_outb(ahd, DFF_THRSH, ahd->suspend_state.dff_thrsh);
-
- ptr = ahd->suspend_state.scratch_ram;
- for (i = 0; i < 64; i++)
- ahd_outb(ahd, SRAM_BASE + i, *ptr++);
-
- if ((ahd->features & AHD_MORE_SRAM) != 0) {
- for (i = 0; i < 16; i++)
- ahd_outb(ahd, TARG_OFFSET + i, *ptr++);
- }
-
- ptr = ahd->suspend_state.btt;
- for (i = 0;i < AHD_NUM_TARGETS; i++) {
- int j;
-
- for (j = 0;j < AHD_NUM_LUNS; j++) {
- u_int tcl;
-
- tcl = BUILD_TCL(i << 4, j);
- ahd_busy_tcl(ahd, tcl, *ptr);
- }
- }
-#endif
- return (0);
-}
-
-/************************** Busy Target Table *********************************/
-/*
- * Set SCBPTR to the SCB that contains the busy
- * table entry for TCL. Return the offset into
- * the SCB that contains the entry for TCL.
- * saved_scbid is dereferenced and set to the
- * scbid that should be restored once manipualtion
- * of the TCL entry is complete.
- */
-static __inline u_int
-ahd_index_busy_tcl(struct ahd_softc *ahd, u_int *saved_scbid, u_int tcl)
-{
- /*
- * Index to the SCB that contains the busy entry.
- */
- AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK);
- *saved_scbid = ahd_get_scbptr(ahd);
- ahd_set_scbptr(ahd, TCL_LUN(tcl)
- | ((TCL_TARGET_OFFSET(tcl) & 0xC) << 4));
-
- /*
- * And now calculate the SCB offset to the entry.
- * Each entry is 2 bytes wide, hence the
- * multiplication by 2.
- */
- return (((TCL_TARGET_OFFSET(tcl) & 0x3) << 1) + SCB_DISCONNECTED_LISTS);
-}
-
-/*
- * Return the untagged transaction id for a given target/channel lun.
- * Optionally, clear the entry.
- */
-u_int
-ahd_find_busy_tcl(struct ahd_softc *ahd, u_int tcl)
-{
- u_int scbid;
- u_int scb_offset;
- u_int saved_scbptr;
-
- scb_offset = ahd_index_busy_tcl(ahd, &saved_scbptr, tcl);
- scbid = ahd_inw_scbram(ahd, scb_offset);
- ahd_set_scbptr(ahd, saved_scbptr);
- return (scbid);
-}
-
-void
-ahd_busy_tcl(struct ahd_softc *ahd, u_int tcl, u_int scbid)
-{
- u_int scb_offset;
- u_int saved_scbptr;
-
- scb_offset = ahd_index_busy_tcl(ahd, &saved_scbptr, tcl);
- ahd_outw(ahd, scb_offset, scbid);
- ahd_set_scbptr(ahd, saved_scbptr);
-}
-
-/************************** SCB and SCB queue management **********************/
-int
-ahd_match_scb(struct ahd_softc *ahd, struct scb *scb, int target,
- char channel, int lun, u_int tag, role_t role)
-{
- int targ = SCB_GET_TARGET(ahd, scb);
- char chan = SCB_GET_CHANNEL(ahd, scb);
- int slun = SCB_GET_LUN(scb);
- int match;
-
- match = ((chan == channel) || (channel == ALL_CHANNELS));
- if (match != 0)
- match = ((targ == target) || (target == CAM_TARGET_WILDCARD));
- if (match != 0)
- match = ((lun == slun) || (lun == CAM_LUN_WILDCARD));
- if (match != 0) {
-#if AHD_TARGET_MODE
- int group;
-
- group = XPT_FC_GROUP(scb->io_ctx->ccb_h.func_code);
- if (role == ROLE_INITIATOR) {
- match = (group != XPT_FC_GROUP_TMODE)
- && ((tag == SCB_GET_TAG(scb))
- || (tag == SCB_LIST_NULL));
- } else if (role == ROLE_TARGET) {
- match = (group == XPT_FC_GROUP_TMODE)
- && ((tag == scb->io_ctx->csio.tag_id)
- || (tag == SCB_LIST_NULL));
- }
-#else /* !AHD_TARGET_MODE */
- match = ((tag == SCB_GET_TAG(scb)) || (tag == SCB_LIST_NULL));
-#endif /* AHD_TARGET_MODE */
- }
-
- return match;
-}
-
-void
-ahd_freeze_devq(struct ahd_softc *ahd, struct scb *scb)
-{
- int target;
- char channel;
- int lun;
-
- target = SCB_GET_TARGET(ahd, scb);
- lun = SCB_GET_LUN(scb);
- channel = SCB_GET_CHANNEL(ahd, scb);
-
- ahd_search_qinfifo(ahd, target, channel, lun,
- /*tag*/SCB_LIST_NULL, ROLE_UNKNOWN,
- CAM_REQUEUE_REQ, SEARCH_COMPLETE);
-
- ahd_platform_freeze_devq(ahd, scb);
-}
-
-void
-ahd_qinfifo_requeue_tail(struct ahd_softc *ahd, struct scb *scb)
-{
- struct scb *prev_scb;
- ahd_mode_state saved_modes;
-
- saved_modes = ahd_save_modes(ahd);
- ahd_set_modes(ahd, AHD_MODE_CCHAN, AHD_MODE_CCHAN);
- prev_scb = NULL;
- if (ahd_qinfifo_count(ahd) != 0) {
- u_int prev_tag;
- u_int prev_pos;
-
- prev_pos = AHD_QIN_WRAP(ahd->qinfifonext - 1);
- prev_tag = ahd->qinfifo[prev_pos];
- prev_scb = ahd_lookup_scb(ahd, prev_tag);
- }
- ahd_qinfifo_requeue(ahd, prev_scb, scb);
- ahd_set_hnscb_qoff(ahd, ahd->qinfifonext);
- ahd_restore_modes(ahd, saved_modes);
-}
-
-static void
-ahd_qinfifo_requeue(struct ahd_softc *ahd, struct scb *prev_scb,
- struct scb *scb)
-{
- if (prev_scb == NULL) {
- uint32_t busaddr;
-
- busaddr = ahd_le32toh(scb->hscb->hscb_busaddr);
- ahd_outb(ahd, NEXT_QUEUED_SCB_ADDR + 0, busaddr & 0xFF);
- ahd_outb(ahd, NEXT_QUEUED_SCB_ADDR + 1, (busaddr >> 8) & 0xFF);
- ahd_outb(ahd, NEXT_QUEUED_SCB_ADDR + 2, (busaddr >> 16) & 0xFF);
- ahd_outb(ahd, NEXT_QUEUED_SCB_ADDR + 3, (busaddr >> 24) & 0xFF);
- } else {
- prev_scb->hscb->next_hscb_busaddr = scb->hscb->hscb_busaddr;
- ahd_sync_scb(ahd, prev_scb,
- BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE);
- }
- ahd->qinfifo[AHD_QIN_WRAP(ahd->qinfifonext)] = SCB_GET_TAG(scb);
- ahd->qinfifonext++;
- scb->hscb->next_hscb_busaddr = ahd->next_queued_hscb->hscb_busaddr;
- ahd_sync_scb(ahd, scb, BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE);
-}
-
-static int
-ahd_qinfifo_count(struct ahd_softc *ahd)
-{
- u_int qinpos;
- u_int wrap_qinpos;
- u_int wrap_qinfifonext;
-
- AHD_ASSERT_MODES(ahd, AHD_MODE_CCHAN_MSK, AHD_MODE_CCHAN_MSK);
- qinpos = ahd_get_snscb_qoff(ahd);
- wrap_qinpos = AHD_QIN_WRAP(qinpos);
- wrap_qinfifonext = AHD_QIN_WRAP(ahd->qinfifonext);
- if (wrap_qinfifonext >= wrap_qinpos)
- return (wrap_qinfifonext - wrap_qinpos);
- else
- return (wrap_qinfifonext
- + NUM_ELEMENTS(ahd->qinfifo) - wrap_qinpos);
-}
-
-void
-ahd_reset_cmds_pending(struct ahd_softc *ahd)
-{
- struct scb *scb;
- ahd_mode_state saved_modes;
- u_int pending_cmds;
-
- saved_modes = ahd_save_modes(ahd);
- ahd_set_modes(ahd, AHD_MODE_CCHAN, AHD_MODE_CCHAN);
-
- /*
- * Don't count any commands as outstanding that the
- * sequencer has already marked for completion.
- */
- ahd_flush_qoutfifo(ahd);
-
- pending_cmds = 0;
- LIST_FOREACH(scb, &ahd->pending_scbs, pending_links) {
- pending_cmds++;
- }
- ahd_outw(ahd, CMDS_PENDING, pending_cmds - ahd_qinfifo_count(ahd));
- ahd_restore_modes(ahd, saved_modes);
- ahd->flags &= ~AHD_UPDATE_PEND_CMDS;
-}
-
-int
-ahd_search_qinfifo(struct ahd_softc *ahd, int target, char channel,
- int lun, u_int tag, role_t role, uint32_t status,
- ahd_search_action action)
-{
- struct scb *scb;
- struct scb *prev_scb;
- ahd_mode_state saved_modes;
- u_int qinstart;
- u_int qinpos;
- u_int qintail;
- u_int tid_next;
- u_int tid_prev;
- u_int scbid;
- u_int savedscbptr;
- uint32_t busaddr;
- int found;
- int targets;
-
- /* Must be in CCHAN mode */
- saved_modes = ahd_save_modes(ahd);
- ahd_set_modes(ahd, AHD_MODE_CCHAN, AHD_MODE_CCHAN);
-
- /*
- * Halt any pending SCB DMA. The sequencer will reinitiate
- * this dma if the qinfifo is not empty once we unpause.
- */
- if ((ahd_inb(ahd, CCSCBCTL) & (CCARREN|CCSCBEN|CCSCBDIR))
- == (CCARREN|CCSCBEN|CCSCBDIR)) {
- ahd_outb(ahd, CCSCBCTL,
- ahd_inb(ahd, CCSCBCTL) & ~(CCARREN|CCSCBEN));
- while ((ahd_inb(ahd, CCSCBCTL) & (CCARREN|CCSCBEN)) != 0)
- ;
- }
- /* Determine sequencer's position in the qinfifo. */
- qintail = AHD_QIN_WRAP(ahd->qinfifonext);
- qinstart = ahd_get_snscb_qoff(ahd);
- qinpos = AHD_QIN_WRAP(qinstart);
- found = 0;
- prev_scb = NULL;
-
- if (action == SEARCH_PRINT) {
- printf("qinstart = %d qinfifonext = %d\nQINFIFO:",
- qinstart, ahd->qinfifonext);
- }
-
- /*
- * Start with an empty queue. Entries that are not chosen
- * for removal will be re-added to the queue as we go.
- */
- ahd->qinfifonext = qinstart;
- busaddr = ahd_le32toh(ahd->next_queued_hscb->hscb_busaddr);
- ahd_outb(ahd, NEXT_QUEUED_SCB_ADDR + 0, busaddr & 0xFF);
- ahd_outb(ahd, NEXT_QUEUED_SCB_ADDR + 1, (busaddr >> 8) & 0xFF);
- ahd_outb(ahd, NEXT_QUEUED_SCB_ADDR + 2, (busaddr >> 16) & 0xFF);
- ahd_outb(ahd, NEXT_QUEUED_SCB_ADDR + 3, (busaddr >> 24) & 0xFF);
-
- while (qinpos != qintail) {
- scb = ahd_lookup_scb(ahd, ahd->qinfifo[qinpos]);
- if (scb == NULL) {
- printf("qinpos = %d, SCB index = %d\n",
- qinpos, ahd->qinfifo[qinpos]);
- panic("Loop 1\n");
- }
-
- if (ahd_match_scb(ahd, scb, target, channel, lun, tag, role)) {
- /*
- * We found an scb that needs to be acted on.
- */
- found++;
- switch (action) {
- case SEARCH_COMPLETE:
- {
- cam_status ostat;
- cam_status cstat;
-
- ostat = ahd_get_transaction_status(scb);
- if (ostat == CAM_REQ_INPROG)
- ahd_set_transaction_status(scb,
- status);
- cstat = ahd_get_transaction_status(scb);
- if (cstat != CAM_REQ_CMP)
- ahd_freeze_scb(scb);
- if ((scb->flags & SCB_ACTIVE) == 0)
- printf("Inactive SCB in qinfifo\n");
- ahd_done(ahd, scb);
-
- /* FALLTHROUGH */
- }
- case SEARCH_REMOVE:
- break;
- case SEARCH_PRINT:
- printf(" 0x%x", ahd->qinfifo[qinpos]);
- /* FALLTHROUGH */
- case SEARCH_COUNT:
- ahd_qinfifo_requeue(ahd, prev_scb, scb);
- prev_scb = scb;
- break;
- }
- } else {
- ahd_qinfifo_requeue(ahd, prev_scb, scb);
- prev_scb = scb;
- }
- qinpos = AHD_QIN_WRAP(qinpos+1);
- }
-
- ahd_set_hnscb_qoff(ahd, ahd->qinfifonext);
-
- if (action == SEARCH_PRINT)
- printf("\nWAITING_TID_QUEUES:\n");
-
- /*
- * Search waiting for selection lists. We traverse the
- * list of "their ids" waiting for selection and, if
- * appropriate, traverse the SCBs of each "their id"
- * looking for matches.
- */
- savedscbptr = ahd_get_scbptr(ahd);
- tid_next = ahd_inw(ahd, WAITING_TID_HEAD);
- tid_prev = SCB_LIST_NULL;
- targets = 0;
- for (scbid = tid_next; !SCBID_IS_NULL(scbid); scbid = tid_next) {
- u_int tid_head;
-
- /*
- * We limit based on the number of SCBs since
- * MK_MESSAGE SCBs are not in the per-tid lists.
- */
- targets++;
- if (targets > AHD_SCB_MAX) {
- panic("TID LIST LOOP");
- }
- if (scbid >= ahd->scb_data.numscbs) {
- printf("%s: Waiting TID List inconsistency. "
- "SCB index == 0x%x, yet numscbs == 0x%x.",
- ahd_name(ahd), scbid, ahd->scb_data.numscbs);
- ahd_dump_card_state(ahd);
- panic("for safety");
- }
- scb = ahd_lookup_scb(ahd, scbid);
- if (scb == NULL) {
- printf("%s: SCB = 0x%x Not Active!\n",
- ahd_name(ahd), scbid);
- panic("Waiting TID List traversal\n");
- }
- ahd_set_scbptr(ahd, scbid);
- tid_next = ahd_inw_scbram(ahd, SCB_NEXT2);
- if (ahd_match_scb(ahd, scb, target, channel, CAM_LUN_WILDCARD,
- SCB_LIST_NULL, ROLE_UNKNOWN) == 0) {
- tid_prev = scbid;
- continue;
- }
-
- /*
- * We found a list of scbs that needs to be searched.
- */
- if (action == SEARCH_PRINT)
- printf(" %d ( ", SCB_GET_TARGET(ahd, scb));
- tid_head = scbid;
- found += ahd_search_scb_list(ahd, target, channel,
- lun, tag, role, status,
- action, &tid_head,
- SCB_GET_TARGET(ahd, scb));
- if (tid_head != scbid)
- ahd_stitch_tid_list(ahd, tid_prev, tid_head, tid_next);
- if (!SCBID_IS_NULL(tid_head))
- tid_prev = tid_head;
- if (action == SEARCH_PRINT)
- printf(")\n");
- }
- ahd_set_scbptr(ahd, savedscbptr);
- ahd_restore_modes(ahd, saved_modes);
- return (found);
-}
-
-static int
-ahd_search_scb_list(struct ahd_softc *ahd, int target, char channel,
- int lun, u_int tag, role_t role, uint32_t status,
- ahd_search_action action, u_int *list_head, u_int tid)
-{
- struct scb *scb;
- u_int scbid;
- u_int next;
- u_int prev;
- int found;
-
- AHD_ASSERT_MODES(ahd, AHD_MODE_CCHAN_MSK, AHD_MODE_CCHAN_MSK);
- found = 0;
- prev = SCB_LIST_NULL;
- next = *list_head;
- for (scbid = next; !SCBID_IS_NULL(scbid); scbid = next) {
- if (scbid >= ahd->scb_data.numscbs) {
- printf("%s:SCB List inconsistency. "
- "SCB == 0x%x, yet numscbs == 0x%x.",
- ahd_name(ahd), scbid, ahd->scb_data.numscbs);
- ahd_dump_card_state(ahd);
- panic("for safety");
- }
- scb = ahd_lookup_scb(ahd, scbid);
- if (scb == NULL) {
- printf("%s: SCB = %d Not Active!\n",
- ahd_name(ahd), scbid);
- panic("Waiting List traversal\n");
- }
- ahd_set_scbptr(ahd, scbid);
- next = ahd_inw_scbram(ahd, SCB_NEXT);
- if (ahd_match_scb(ahd, scb, target, channel,
- lun, SCB_LIST_NULL, role) == 0) {
- prev = scbid;
- continue;
- }
- found++;
- switch (action) {
- case SEARCH_COMPLETE:
- {
- cam_status ostat;
- cam_status cstat;
-
- ostat = ahd_get_transaction_status(scb);
- if (ostat == CAM_REQ_INPROG)
- ahd_set_transaction_status(scb, status);
- cstat = ahd_get_transaction_status(scb);
- if (cstat != CAM_REQ_CMP)
- ahd_freeze_scb(scb);
- if ((scb->flags & SCB_ACTIVE) == 0)
- printf("Inactive SCB in Waiting List\n");
- ahd_done(ahd, scb);
- /* FALLTHROUGH */
- }
- case SEARCH_REMOVE:
- ahd_rem_wscb(ahd, scbid, prev, next, tid);
- if (prev == SCB_LIST_NULL)
- *list_head = next;
- break;
- case SEARCH_PRINT:
- printf("0x%x ", scbid);
- case SEARCH_COUNT:
- prev = scbid;
- break;
- }
- if (found > AHD_SCB_MAX)
- panic("SCB LIST LOOP");
- }
- if (action == SEARCH_COMPLETE
- || action == SEARCH_REMOVE)
- ahd_outw(ahd, CMDS_PENDING, ahd_inw(ahd, CMDS_PENDING) - found);
- return (found);
-}
-
-static void
-ahd_stitch_tid_list(struct ahd_softc *ahd, u_int tid_prev,
- u_int tid_cur, u_int tid_next)
-{
- AHD_ASSERT_MODES(ahd, AHD_MODE_CCHAN_MSK, AHD_MODE_CCHAN_MSK);
-
- if (SCBID_IS_NULL(tid_cur)) {
-
- /* Bypass current TID list */
- if (SCBID_IS_NULL(tid_prev)) {
- ahd_outw(ahd, WAITING_TID_HEAD, tid_next);
- } else {
- ahd_set_scbptr(ahd, tid_prev);
- ahd_outw(ahd, SCB_NEXT2, tid_next);
- }
- if (SCBID_IS_NULL(tid_next))
- ahd_outw(ahd, WAITING_TID_TAIL, tid_prev);
- } else {
-
- /* Stitch through tid_cur */
- if (SCBID_IS_NULL(tid_prev)) {
- ahd_outw(ahd, WAITING_TID_HEAD, tid_cur);
- } else {
- ahd_set_scbptr(ahd, tid_prev);
- ahd_outw(ahd, SCB_NEXT2, tid_cur);
- }
- ahd_set_scbptr(ahd, tid_cur);
- ahd_outw(ahd, SCB_NEXT2, tid_next);
-
- if (SCBID_IS_NULL(tid_next))
- ahd_outw(ahd, WAITING_TID_TAIL, tid_cur);
- }
-}
-
-/*
- * Manipulate the waiting for selection list and return the
- * scb that follows the one that we remove.
- */
-static u_int
-ahd_rem_wscb(struct ahd_softc *ahd, u_int scbid,
- u_int prev, u_int next, u_int tid)
-{
- u_int tail_offset;
-
- AHD_ASSERT_MODES(ahd, AHD_MODE_CCHAN_MSK, AHD_MODE_CCHAN_MSK);
- if (!SCBID_IS_NULL(prev)) {
- ahd_set_scbptr(ahd, prev);
- ahd_outw(ahd, SCB_NEXT, next);
- }
-
- /*
- * SCBs that had MK_MESSAGE set in them will not
- * be queued to the per-target lists, so don't
- * blindly clear the tail pointer.
- */
- tail_offset = WAITING_SCB_TAILS + (2 * tid);
- if (SCBID_IS_NULL(next)
- && ahd_inw(ahd, tail_offset) == scbid)
- ahd_outw(ahd, tail_offset, prev);
- ahd_add_scb_to_free_list(ahd, scbid);
- return (next);
-}
-
-/*
- * Add the SCB as selected by SCBPTR onto the on chip list of
- * free hardware SCBs. This list is empty/unused if we are not
- * performing SCB paging.
- */
-static void
-ahd_add_scb_to_free_list(struct ahd_softc *ahd, u_int scbid)
-{
-/* XXX Need some other mechanism to designate "free". */
- /*
- * Invalidate the tag so that our abort
- * routines don't think it's active.
- ahd_outb(ahd, SCB_TAG, SCB_LIST_NULL);
- */
-}
-
-/******************************** Error Handling ******************************/
-/*
- * Abort all SCBs that match the given description (target/channel/lun/tag),
- * setting their status to the passed in status if the status has not already
- * been modified from CAM_REQ_INPROG. This routine assumes that the sequencer
- * is paused before it is called.
- */
-int
-ahd_abort_scbs(struct ahd_softc *ahd, int target, char channel,
- int lun, u_int tag, role_t role, uint32_t status)
-{
- struct scb *scbp;
- struct scb *scbp_next;
- u_int active_scb;
- u_int i, j;
- u_int maxtarget;
- u_int minlun;
- u_int maxlun;
- int found;
- ahd_mode_state saved_modes;
-
- /* restore these when we're done */
- active_scb = ahd_get_scbptr(ahd);
- saved_modes = ahd_save_modes(ahd);
-
- ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
- found = ahd_search_qinfifo(ahd, target, channel, lun, SCB_LIST_NULL,
- role, CAM_REQUEUE_REQ, SEARCH_COMPLETE);
-
- /*
- * Clean out the busy target table for any untagged commands.
- */
- i = 0;
- maxtarget = 16;
- if (target != CAM_TARGET_WILDCARD) {
- i = target;
- if (channel == 'B')
- i += 8;
- maxtarget = i + 1;
- }
-
- if (lun == CAM_LUN_WILDCARD) {
- minlun = 0;
- maxlun = AHD_NUM_LUNS_NONPKT;
- } else if (lun >= AHD_NUM_LUNS_NONPKT) {
- minlun = maxlun = 0;
- } else {
- minlun = lun;
- maxlun = lun + 1;
- }
-
- if (role != ROLE_TARGET) {
- for (;i < maxtarget; i++) {
- for (j = minlun;j < maxlun; j++) {
- u_int scbid;
- u_int tcl;
-
- tcl = BUILD_TCL_RAW(i, 'A', j);
- scbid = ahd_find_busy_tcl(ahd, tcl);
- scbp = ahd_lookup_scb(ahd, scbid);
- if (scbp == NULL
- || ahd_match_scb(ahd, scbp, target, channel,
- lun, tag, role) == 0)
- continue;
- ahd_unbusy_tcl(ahd, BUILD_TCL_RAW(i, 'A', j));
- }
- }
- }
-
- /*
- * Don't abort commands that have already completed,
- * but haven't quite made it up to the host yet.
- */
- ahd_flush_qoutfifo(ahd);
-
- /*
- * Go through the pending CCB list and look for
- * commands for this target that are still active.
- * These are other tagged commands that were
- * disconnected when the reset occurred.
- */
- scbp_next = LIST_FIRST(&ahd->pending_scbs);
- while (scbp_next != NULL) {
- scbp = scbp_next;
- scbp_next = LIST_NEXT(scbp, pending_links);
- if (ahd_match_scb(ahd, scbp, target, channel, lun, tag, role)) {
- cam_status ostat;
-
- ostat = ahd_get_transaction_status(scbp);
- if (ostat == CAM_REQ_INPROG)
- ahd_set_transaction_status(scbp, status);
- if (ahd_get_transaction_status(scbp) != CAM_REQ_CMP)
- ahd_freeze_scb(scbp);
- if ((scbp->flags & SCB_ACTIVE) == 0)
- printf("Inactive SCB on pending list\n");
- ahd_done(ahd, scbp);
- found++;
- }
- }
- ahd_set_scbptr(ahd, active_scb);
- ahd_restore_modes(ahd, saved_modes);
- ahd_platform_abort_scbs(ahd, target, channel, lun, tag, role, status);
- ahd->flags |= AHD_UPDATE_PEND_CMDS;
- return found;
-}
-
-static void
-ahd_reset_current_bus(struct ahd_softc *ahd)
-{
- uint8_t scsiseq;
-
- AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK);
- ahd_outb(ahd, SIMODE1, ahd_inb(ahd, SIMODE1) & ~ENSCSIRST);
- scsiseq = ahd_inb(ahd, SCSISEQ0) & ~(ENSELO|ENARBO|SCSIRSTO);
- ahd_outb(ahd, SCSISEQ0, scsiseq | SCSIRSTO);
- ahd_delay(AHD_BUSRESET_DELAY);
- /* Turn off the bus reset */
- ahd_outb(ahd, SCSISEQ0, scsiseq);
- if ((ahd->bugs & AHD_SCSIRST_BUG) != 0) {
- /*
- * 2A Razor #474
- * Certain chip state is not cleared for
- * SCSI bus resets that we initiate, so
- * we must reset the chip.
- */
- ahd_delay(AHD_BUSRESET_DELAY);
- ahd_reset(ahd);
- ahd_intr_enable(ahd, /*enable*/TRUE);
- AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK);
- }
-
- ahd_clear_intstat(ahd);
-}
-
-int
-ahd_reset_channel(struct ahd_softc *ahd, char channel, int initiate_reset)
-{
- struct ahd_devinfo devinfo;
- u_int initiator;
- u_int target;
- u_int max_scsiid;
- int found;
- u_int fifo;
- u_int next_fifo;
-
- ahd->pending_device = NULL;
-
- ahd_compile_devinfo(&devinfo,
- CAM_TARGET_WILDCARD,
- CAM_TARGET_WILDCARD,
- CAM_LUN_WILDCARD,
- channel, ROLE_UNKNOWN);
- ahd_pause(ahd);
-
- /* Make sure the sequencer is in a safe location. */
- ahd_clear_critical_section(ahd);
-
-#if AHD_TARGET_MODE
- if ((ahd->flags & AHD_TARGETROLE) != 0) {
- ahd_run_tqinfifo(ahd, /*paused*/TRUE);
- }
-#endif
- ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
-
- /*
- * Disable selections so no automatic hardware
- * functions will modify chip state.
- */
- ahd_outb(ahd, SCSISEQ0, 0);
- ahd_outb(ahd, SCSISEQ1, 0);
-
- /*
- * Safely shut down our DMA engines. Always start with
- * the FIFO that is not currently active (if any are
- * actively connected).
- */
- next_fifo = fifo = ahd_inb(ahd, DFFSTAT) & CURRFIFO;
- if (next_fifo > CURRFIFO_1)
- /* If disconneced, arbitrarily start with FIFO1. */
- next_fifo = fifo = 0;
- do {
- next_fifo ^= CURRFIFO_1;
- ahd_set_modes(ahd, next_fifo, next_fifo);
- ahd_outb(ahd, DFCNTRL,
- ahd_inb(ahd, DFCNTRL) & ~(SCSIEN|HDMAEN));
- while ((ahd_inb(ahd, DFCNTRL) & HDMAENACK) != 0)
- ahd_delay(10);
- /*
- * Set CURRFIFO to the now inactive channel.
- */
- ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
- ahd_outb(ahd, DFFSTAT, next_fifo);
- } while (next_fifo != fifo);
- /*
- * Reset the bus if we are initiating this reset
- */
- ahd_clear_msg_state(ahd);
- ahd_outb(ahd, SIMODE1,
- ahd_inb(ahd, SIMODE1) & ~(ENBUSFREE|ENSCSIRST|ENBUSFREE));
- if (initiate_reset)
- ahd_reset_current_bus(ahd);
- ahd_clear_intstat(ahd);
-
- /*
- * Clean up all the state information for the
- * pending transactions on this bus.
- */
- found = ahd_abort_scbs(ahd, CAM_TARGET_WILDCARD, channel,
- CAM_LUN_WILDCARD, SCB_LIST_NULL,
- ROLE_UNKNOWN, CAM_SCSI_BUS_RESET);
-
- /*
- * Cleanup anything left in the FIFOs.
- */
- ahd_clear_fifo(ahd, 0);
- ahd_clear_fifo(ahd, 1);
-
- /*
- * Revert to async/narrow transfers until we renegotiate.
- */
- max_scsiid = (ahd->features & AHD_WIDE) ? 15 : 7;
- for (target = 0; target <= max_scsiid; target++) {
-
- if (ahd->enabled_targets[target] == NULL)
- continue;
- for (initiator = 0; initiator <= max_scsiid; initiator++) {
- struct ahd_devinfo devinfo;
-
- ahd_compile_devinfo(&devinfo, target, initiator,
- CAM_LUN_WILDCARD,
- 'A', ROLE_UNKNOWN);
- ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
- AHD_TRANS_CUR, /*paused*/TRUE);
- ahd_set_syncrate(ahd, &devinfo, /*period*/0,
- /*offset*/0, /*ppr_options*/0,
- AHD_TRANS_CUR, /*paused*/TRUE);
- }
- }
-
-#ifdef AHD_TARGET_MODE
- max_scsiid = (ahd->features & AHD_WIDE) ? 15 : 7;
-
- /*
- * Send an immediate notify ccb to all target more peripheral
- * drivers affected by this action.
- */
- for (target = 0; target <= max_scsiid; target++) {
- struct ahd_tmode_tstate* tstate;
- u_int lun;
-
- tstate = ahd->enabled_targets[target];
- if (tstate == NULL)
- continue;
- for (lun = 0; lun < AHD_NUM_LUNS; lun++) {
- struct ahd_tmode_lstate* lstate;
-
- lstate = tstate->enabled_luns[lun];
- if (lstate == NULL)
- continue;
-
- ahd_queue_lstate_event(ahd, lstate, CAM_TARGET_WILDCARD,
- EVENT_TYPE_BUS_RESET, /*arg*/0);
- ahd_send_lstate_events(ahd, lstate);
- }
- }
-#endif
- /* Notify the XPT that a bus reset occurred */
- ahd_send_async(ahd, devinfo.channel, CAM_TARGET_WILDCARD,
- CAM_LUN_WILDCARD, AC_BUS_RESET, NULL);
- ahd_restart(ahd);
- /*
- * Freeze the SIMQ until our poller can determine that
- * the bus reset has really gone away. We set the initial
- * timer to 0 to have the check performed as soon as possible
- * from the timer context.
- */
- if ((ahd->flags & AHD_RESET_POLL_ACTIVE) == 0) {
- ahd->flags |= AHD_RESET_POLL_ACTIVE;
- ahd_freeze_simq(ahd);
- ahd_timer_reset(&ahd->reset_timer, 0, ahd_reset_poll, ahd);
- }
- return (found);
-}
-
-
-#define AHD_RESET_POLL_US 1000
-static void
-ahd_reset_poll(void *arg)
-{
- struct ahd_softc *ahd;
- u_int scsiseq1;
- u_long l;
- u_long s;
-
- ahd_list_lock(&l);
- ahd = ahd_find_softc((struct ahd_softc *)arg);
- if (ahd == NULL) {
- printf("ahd_reset_poll: Instance %p no longer exists\n", arg);
- ahd_list_unlock(&l);
- return;
- }
- ahd_lock(ahd, &s);
- ahd_pause(ahd);
- ahd_update_modes(ahd);
- ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
- ahd_outb(ahd, CLRSINT1, CLRSCSIRSTI);
- if ((ahd_inb(ahd, SSTAT1) & SCSIRSTI) != 0) {
- ahd_timer_reset(&ahd->reset_timer, AHD_RESET_POLL_US,
- ahd_reset_poll, ahd);
- ahd_unpause(ahd);
- ahd_unlock(ahd, &s);
- ahd_list_unlock(&l);
- return;
- }
-
- /* Reset is now low. Complete chip reinitialization. */
- ahd_outb(ahd, SIMODE1, ahd_inb(ahd, SIMODE1) | ENSCSIRST);
- scsiseq1 = ahd_inb(ahd, SCSISEQ_TEMPLATE);
- ahd_outb(ahd, SCSISEQ1, scsiseq1 & (ENSELI|ENRSELI|ENAUTOATNP));
- ahd_unpause(ahd);
- ahd->flags &= ~AHD_RESET_POLL_ACTIVE;
- ahd_unlock(ahd, &s);
- ahd_release_simq(ahd);
- ahd_list_unlock(&l);
-}
-
-/**************************** Statistics Processing ***************************/
-static void
-ahd_stat_timer(void *arg)
-{
- struct ahd_softc *ahd;
- u_long l;
- u_long s;
- int enint_coal;
-
- ahd_list_lock(&l);
- ahd = ahd_find_softc((struct ahd_softc *)arg);
- if (ahd == NULL) {
- printf("ahd_stat_timer: Instance %p no longer exists\n", arg);
- ahd_list_unlock(&l);
- return;
- }
- ahd_lock(ahd, &s);
-
- enint_coal = ahd->hs_mailbox & ENINT_COALESS;
- if (ahd->cmdcmplt_total > ahd->int_coalessing_threshold)
- enint_coal |= ENINT_COALESS;
- else if (ahd->cmdcmplt_total < ahd->int_coalessing_stop_threshold)
- enint_coal &= ~ENINT_COALESS;
-
- if (enint_coal != (ahd->hs_mailbox & ENINT_COALESS)) {
- ahd_enable_coalessing(ahd, enint_coal);
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_INT_COALESSING) != 0)
- printf("%s: Interrupt coalessing "
- "now %sabled. Cmds %d\n",
- ahd_name(ahd),
- (enint_coal & ENINT_COALESS) ? "en" : "dis",
- ahd->cmdcmplt_total);
-#endif
- }
-
- ahd->cmdcmplt_bucket = (ahd->cmdcmplt_bucket+1) & (AHD_STAT_BUCKETS-1);
- ahd->cmdcmplt_total -= ahd->cmdcmplt_counts[ahd->cmdcmplt_bucket];
- ahd->cmdcmplt_counts[ahd->cmdcmplt_bucket] = 0;
- ahd_timer_reset(&ahd->stat_timer, AHD_STAT_UPDATE_US,
- ahd_stat_timer, ahd);
- ahd_unlock(ahd, &s);
- ahd_list_unlock(&l);
-}
-
-/****************************** Status Processing *****************************/
-void
-ahd_handle_scb_status(struct ahd_softc *ahd, struct scb *scb)
-{
- if (scb->hscb->shared_data.istatus.scsi_status != 0) {
- ahd_handle_scsi_status(ahd, scb);
- } else {
- ahd_calc_residual(ahd, scb);
- ahd_done(ahd, scb);
- }
-}
-
-void
-ahd_handle_scsi_status(struct ahd_softc *ahd, struct scb *scb)
-{
- struct hardware_scb *hscb;
- u_int qfreeze_cnt;
- ahd_mode_state saved_modes;
-
- /*
- * The sequencer freezes its select-out queue
- * anytime a SCSI status error occurs. We must
- * handle the error and decrement the QFREEZE count
- * to allow the sequencer to continue.
- */
- hscb = scb->hscb;
-
- /* Freeze the queue until the client sees the error. */
- ahd_pause(ahd);
- saved_modes = ahd_save_modes(ahd);
- ahd_clear_critical_section(ahd);
- ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
- ahd_freeze_devq(ahd, scb);
- ahd_freeze_scb(scb);
- qfreeze_cnt = ahd_inw(ahd, QFREEZE_COUNT);
- if (qfreeze_cnt == 0) {
- printf("%s: Bad status with 0 qfreeze count!\n", ahd_name(ahd));
- } else {
- qfreeze_cnt--;
- ahd_outw(ahd, QFREEZE_COUNT, qfreeze_cnt);
- }
- if (qfreeze_cnt == 0)
- ahd_outb(ahd, SEQ_FLAGS2,
- ahd_inb(ahd, SEQ_FLAGS2) & ~SELECTOUT_QFROZEN);
- ahd_unpause(ahd);
- /* Don't want to clobber the original sense code */
- if ((scb->flags & SCB_SENSE) != 0) {
- /*
- * Clear the SCB_SENSE Flag and perform
- * a normal command completion.
- */
- scb->flags &= ~SCB_SENSE;
- ahd_set_transaction_status(scb, CAM_AUTOSENSE_FAIL);
- ahd_done(ahd, scb);
- return;
- }
- ahd_set_transaction_status(scb, CAM_SCSI_STATUS_ERROR);
- ahd_set_scsi_status(scb, hscb->shared_data.istatus.scsi_status);
- switch (hscb->shared_data.istatus.scsi_status) {
- case STATUS_PKT_SENSE:
- {
- struct scsi_status_iu_header *siu;
-
- ahd_sync_sense(ahd, scb, BUS_DMASYNC_POSTREAD);
- siu = (struct scsi_status_iu_header *)scb->sense_data;
- ahd_set_scsi_status(scb, siu->status);
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_SENSE) != 0) {
- ahd_print_path(ahd, scb);
- printf("SCB 0x%x Received PKT Status of 0x%x\n",
- SCB_GET_TAG(scb), siu->status);
- printf("\tflags = 0x%x, sense len = 0x%x, "
- "pktfail = 0x%x\n",
- siu->flags, scsi_4btoul(siu->sense_length),
- scsi_4btoul(siu->pkt_failures_length));
- }
-#endif
- if ((siu->flags & SIU_RSPVALID) != 0) {
- ahd_print_path(ahd, scb);
- if (scsi_4btoul(siu->pkt_failures_length) < 4) {
- printf("Unable to parse pkt_failures\n");
- } else {
-
- switch (SIU_PKTFAIL_CODE(siu)) {
- case SIU_PFC_NONE:
- printf("No packet failure found\n");
- break;
- case SIU_PFC_CIU_FIELDS_INVALID:
- printf("Invalid Command IU Field\n");
- break;
- case SIU_PFC_TMF_NOT_SUPPORTED:
- printf("TMF not supportd\n");
- break;
- case SIU_PFC_TMF_FAILED:
- printf("TMF failed\n");
- break;
- case SIU_PFC_INVALID_TYPE_CODE:
- printf("Invalid L_Q Type code\n");
- break;
- case SIU_PFC_ILLEGAL_REQUEST:
- printf("Illegal request\n");
- default:
- break;
- }
- }
- if (siu->status == SCSI_STATUS_OK)
- ahd_set_transaction_status(scb,
- CAM_REQ_CMP_ERR);
- }
- if ((siu->flags & SIU_SNSVALID) != 0) {
- scb->flags |= SCB_PKT_SENSE;
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_SENSE) != 0)
- printf("Sense data available\n");
-#endif
- }
- ahd_done(ahd, scb);
- break;
- }
- case SCSI_STATUS_CMD_TERMINATED:
- case SCSI_STATUS_CHECK_COND:
- {
- struct ahd_devinfo devinfo;
- struct ahd_dma_seg *sg;
- struct scsi_sense *sc;
- struct ahd_initiator_tinfo *targ_info;
- struct ahd_tmode_tstate *tstate;
- struct ahd_transinfo *tinfo;
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_SENSE) {
- ahd_print_path(ahd, scb);
- printf("SCB %d: requests Check Status\n",
- SCB_GET_TAG(scb));
- }
-#endif
-
- if (ahd_perform_autosense(scb) == 0)
- break;
-
- ahd_compile_devinfo(&devinfo, SCB_GET_OUR_ID(scb),
- SCB_GET_TARGET(ahd, scb),
- SCB_GET_LUN(scb),
- SCB_GET_CHANNEL(ahd, scb),
- ROLE_INITIATOR);
- targ_info = ahd_fetch_transinfo(ahd,
- devinfo.channel,
- devinfo.our_scsiid,
- devinfo.target,
- &tstate);
- tinfo = &targ_info->curr;
- sg = scb->sg_list;
- sc = (struct scsi_sense *)hscb->shared_data.idata.cdb;
- /*
- * Save off the residual if there is one.
- */
- ahd_update_residual(ahd, scb);
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_SENSE) {
- ahd_print_path(ahd, scb);
- printf("Sending Sense\n");
- }
-#endif
- scb->sg_count = 0;
- sg = ahd_sg_setup(ahd, scb, sg, ahd_get_sense_bufaddr(ahd, scb),
- ahd_get_sense_bufsize(ahd, scb),
- /*last*/TRUE);
- sc->opcode = REQUEST_SENSE;
- sc->byte2 = 0;
- if (tinfo->protocol_version <= SCSI_REV_2
- && SCB_GET_LUN(scb) < 8)
- sc->byte2 = SCB_GET_LUN(scb) << 5;
- sc->unused[0] = 0;
- sc->unused[1] = 0;
- sc->length = ahd_get_sense_bufsize(ahd, scb);
- sc->control = 0;
-
- /*
- * We can't allow the target to disconnect.
- * This will be an untagged transaction and
- * having the target disconnect will make this
- * transaction indestinguishable from outstanding
- * tagged transactions.
- */
- hscb->control = 0;
-
- /*
- * This request sense could be because the
- * the device lost power or in some other
- * way has lost our transfer negotiations.
- * Renegotiate if appropriate. Unit attention
- * errors will be reported before any data
- * phases occur.
- */
- if (ahd_get_residual(scb) == ahd_get_transfer_length(scb)) {
- ahd_update_neg_request(ahd, &devinfo,
- tstate, targ_info,
- AHD_NEG_IF_NON_ASYNC);
- }
- if (tstate->auto_negotiate & devinfo.target_mask) {
- hscb->control |= MK_MESSAGE;
- scb->flags &=
- ~(SCB_NEGOTIATE|SCB_ABORT|SCB_DEVICE_RESET);
- scb->flags |= SCB_AUTO_NEGOTIATE;
- }
- hscb->cdb_len = sizeof(*sc);
- ahd_setup_data_scb(ahd, scb);
- scb->flags |= SCB_SENSE;
- ahd_queue_scb(ahd, scb);
- /*
- * Ensure we have enough time to actually
- * retrieve the sense.
- */
- ahd_scb_timer_reset(scb, 5 * 1000000);
- break;
- }
- case SCSI_STATUS_OK:
- printf("%s: Interrupted for staus of 0???\n",
- ahd_name(ahd));
- /* FALLTHROUGH */
- default:
- ahd_done(ahd, scb);
- break;
- }
-}
-
-/*
- * Calculate the residual for a just completed SCB.
- */
-void
-ahd_calc_residual(struct ahd_softc *ahd, struct scb *scb)
-{
- struct hardware_scb *hscb;
- struct initiator_status *spkt;
- uint32_t sgptr;
- uint32_t resid_sgptr;
- uint32_t resid;
-
- /*
- * 5 cases.
- * 1) No residual.
- * SG_STATUS_VALID clear in sgptr.
- * 2) Transferless command
- * 3) Never performed any transfers.
- * sgptr has SG_FULL_RESID set.
- * 4) No residual but target did not
- * save data pointers after the
- * last transfer, so sgptr was
- * never updated.
- * 5) We have a partial residual.
- * Use residual_sgptr to determine
- * where we are.
- */
-
- hscb = scb->hscb;
- sgptr = ahd_le32toh(hscb->sgptr);
- if ((sgptr & SG_STATUS_VALID) == 0)
- /* Case 1 */
- return;
- sgptr &= ~SG_STATUS_VALID;
-
- if ((sgptr & SG_LIST_NULL) != 0)
- /* Case 2 */
- return;
-
- /*
- * Residual fields are the same in both
- * target and initiator status packets,
- * so we can always use the initiator fields
- * regardless of the role for this SCB.
- */
- spkt = &hscb->shared_data.istatus;
- resid_sgptr = ahd_le32toh(spkt->residual_sgptr);
- if ((sgptr & SG_FULL_RESID) != 0) {
- /* Case 3 */
- resid = ahd_get_transfer_length(scb);
- } else if ((resid_sgptr & SG_LIST_NULL) != 0) {
- /* Case 4 */
- return;
- } else if ((resid_sgptr & SG_OVERRUN_RESID) != 0) {
- ahd_print_path(ahd, scb);
- printf("data overrun detected Tag == 0x%x.\n",
- SCB_GET_TAG(scb));
- ahd_freeze_devq(ahd, scb);
- ahd_set_transaction_status(scb, CAM_DATA_RUN_ERR);
- ahd_freeze_scb(scb);
- return;
- } else if ((resid_sgptr & ~SG_PTR_MASK) != 0) {
- panic("Bogus resid sgptr value 0x%x\n", resid_sgptr);
- /* NOTREACHED */
- } else {
- struct ahd_dma_seg *sg;
-
- /*
- * Remainder of the SG where the transfer
- * stopped.
- */
- resid = ahd_le32toh(spkt->residual_datacnt) & AHD_SG_LEN_MASK;
- sg = ahd_sg_bus_to_virt(ahd, scb, resid_sgptr & SG_PTR_MASK);
-
- /* The residual sg_ptr always points to the next sg */
- sg--;
-
- /*
- * Add up the contents of all residual
- * SG segments that are after the SG where
- * the transfer stopped.
- */
- while ((ahd_le32toh(sg->len) & AHD_DMA_LAST_SEG) == 0) {
- sg++;
- resid += ahd_le32toh(sg->len) & AHD_SG_LEN_MASK;
- }
- }
- if ((scb->flags & SCB_SENSE) == 0)
- ahd_set_residual(scb, resid);
- else
- ahd_set_sense_residual(scb, resid);
-
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MISC) != 0) {
- ahd_print_path(ahd, scb);
- printf("Handled %sResidual of %d bytes\n",
- (scb->flags & SCB_SENSE) ? "Sense " : "", resid);
- }
-#endif
-}
-
-/******************************* Target Mode **********************************/
-#ifdef AHD_TARGET_MODE
-/*
- * Add a target mode event to this lun's queue
- */
-static void
-ahd_queue_lstate_event(struct ahd_softc *ahd, struct ahd_tmode_lstate *lstate,
- u_int initiator_id, u_int event_type, u_int event_arg)
-{
- struct ahd_tmode_event *event;
- int pending;
-
- xpt_freeze_devq(lstate->path, /*count*/1);
- if (lstate->event_w_idx >= lstate->event_r_idx)
- pending = lstate->event_w_idx - lstate->event_r_idx;
- else
- pending = AHD_TMODE_EVENT_BUFFER_SIZE + 1
- - (lstate->event_r_idx - lstate->event_w_idx);
-
- if (event_type == EVENT_TYPE_BUS_RESET
- || event_type == MSG_BUS_DEV_RESET) {
- /*
- * Any earlier events are irrelevant, so reset our buffer.
- * This has the effect of allowing us to deal with reset
- * floods (an external device holding down the reset line)
- * without losing the event that is really interesting.
- */
- lstate->event_r_idx = 0;
- lstate->event_w_idx = 0;
- xpt_release_devq(lstate->path, pending, /*runqueue*/FALSE);
- }
-
- if (pending == AHD_TMODE_EVENT_BUFFER_SIZE) {
- xpt_print_path(lstate->path);
- printf("immediate event %x:%x lost\n",
- lstate->event_buffer[lstate->event_r_idx].event_type,
- lstate->event_buffer[lstate->event_r_idx].event_arg);
- lstate->event_r_idx++;
- if (lstate->event_r_idx == AHD_TMODE_EVENT_BUFFER_SIZE)
- lstate->event_r_idx = 0;
- xpt_release_devq(lstate->path, /*count*/1, /*runqueue*/FALSE);
- }
-
- event = &lstate->event_buffer[lstate->event_w_idx];
- event->initiator_id = initiator_id;
- event->event_type = event_type;
- event->event_arg = event_arg;
- lstate->event_w_idx++;
- if (lstate->event_w_idx == AHD_TMODE_EVENT_BUFFER_SIZE)
- lstate->event_w_idx = 0;
-}
-
-/*
- * Send any target mode events queued up waiting
- * for immediate notify resources.
- */
-void
-ahd_send_lstate_events(struct ahd_softc *ahd, struct ahd_tmode_lstate *lstate)
-{
- struct ccb_hdr *ccbh;
- struct ccb_immed_notify *inot;
-
- while (lstate->event_r_idx != lstate->event_w_idx
- && (ccbh = SLIST_FIRST(&lstate->immed_notifies)) != NULL) {
- struct ahd_tmode_event *event;
-
- event = &lstate->event_buffer[lstate->event_r_idx];
- SLIST_REMOVE_HEAD(&lstate->immed_notifies, sim_links.sle);
- inot = (struct ccb_immed_notify *)ccbh;
- switch (event->event_type) {
- case EVENT_TYPE_BUS_RESET:
- ccbh->status = CAM_SCSI_BUS_RESET|CAM_DEV_QFRZN;
- break;
- default:
- ccbh->status = CAM_MESSAGE_RECV|CAM_DEV_QFRZN;
- inot->message_args[0] = event->event_type;
- inot->message_args[1] = event->event_arg;
- break;
- }
- inot->initiator_id = event->initiator_id;
- inot->sense_len = 0;
- xpt_done((union ccb *)inot);
- lstate->event_r_idx++;
- if (lstate->event_r_idx == AHD_TMODE_EVENT_BUFFER_SIZE)
- lstate->event_r_idx = 0;
- }
-}
-#endif
-
-/******************** Sequencer Program Patching/Download *********************/
-
-#ifdef AHD_DUMP_SEQ
-void
-ahd_dumpseq(struct ahd_softc* ahd)
-{
- int i;
- int max_prog;
-
- max_prog = 2048;
-
- ahd_outb(ahd, SEQCTL0, PERRORDIS|FAILDIS|FASTMODE|LOADRAM);
- ahd_outb(ahd, PRGMCNT, 0);
- ahd_outb(ahd, PRGMCNT+1, 0);
- for (i = 0; i < max_prog; i++) {
- uint8_t ins_bytes[4];
-
- ahd_insb(ahd, SEQRAM, ins_bytes, 4);
- printf("0x%08x\n", ins_bytes[0] << 24
- | ins_bytes[1] << 16
- | ins_bytes[2] << 8
- | ins_bytes[3]);
- }
-}
-#endif
-
-static void
-ahd_loadseq(struct ahd_softc *ahd)
-{
- struct cs cs_table[num_critical_sections];
- u_int begin_set[num_critical_sections];
- u_int end_set[num_critical_sections];
- struct patch *cur_patch;
- u_int cs_count;
- u_int cur_cs;
- u_int i;
- int downloaded;
- u_int skip_addr;
- u_int sg_prefetch_cnt;
- u_int sg_prefetch_cnt_limit;
- u_int sg_prefetch_align;
- u_int sg_size;
- uint8_t download_consts[DOWNLOAD_CONST_COUNT];
-
- if (bootverbose)
- printf("%s: Downloading Sequencer Program...",
- ahd_name(ahd));
-
-#if DOWNLOAD_CONST_COUNT != 7
-#error "Download Const Mismatch"
-#endif
- /*
- * Start out with 0 critical sections
- * that apply to this firmware load.
- */
- cs_count = 0;
- cur_cs = 0;
- memset(begin_set, 0, sizeof(begin_set));
- memset(end_set, 0, sizeof(end_set));
-
- /*
- * Setup downloadable constant table.
- *
- * The computation for the S/G prefetch variables is
- * a bit complicated. We would like to always fetch
- * in terms of cachelined sized increments. However,
- * if the cacheline is not an even multiple of the
- * SG element size or is larger than our SG RAM, using
- * just the cache size might leave us with only a portion
- * of an SG element at the tail of a prefetch. If the
- * cacheline is larger than our S/G prefetch buffer less
- * the size of an SG element, we may round down to a cacheline
- * that doesn't contain any or all of the S/G of interest
- * within the bounds of our S/G ram. Provide variables to
- * the sequencer that will allow it to handle these edge
- * cases.
- */
- /* Start by aligning to the nearest cacheline. */
- sg_prefetch_align = ahd->pci_cachesize;
- if (sg_prefetch_align == 0)
- sg_prefetch_cnt = 8;
- /* Round down to the nearest power of 2. */
- while (powerof2(sg_prefetch_align) == 0)
- sg_prefetch_align--;
- /*
- * If the cacheline boundary is greater than half our prefetch RAM
- * we risk not being able to fetch even a single complete S/G
- * segment if we align to that boundary.
- */
- if (sg_prefetch_align > CCSGADDR_MAX/2)
- sg_prefetch_align = CCSGADDR_MAX/2;
- /* Start by fetching a single cacheline. */
- sg_prefetch_cnt = sg_prefetch_align;
- /*
- * Increment the prefetch count by cachelines until
- * at least one S/G element will fit.
- */
- sg_size = sizeof(struct ahd_dma_seg);
- if ((ahd->flags & AHD_64BIT_ADDRESSING) != 0)
- sg_size = sizeof(struct ahd_dma64_seg);
- while (sg_prefetch_cnt < sg_size)
- sg_prefetch_cnt += sg_prefetch_align;
- /*
- * If the cacheline is not an even multiple of
- * the S/G size, we may only get a partial S/G when
- * we align. Add a cacheline if this is the case.
- */
- if ((sg_prefetch_align % sg_size) != 0
- && (sg_prefetch_cnt < CCSGADDR_MAX))
- sg_prefetch_cnt += sg_prefetch_align;
- /*
- * Lastly, compute a value that the sequencer can use
- * to determine if the remainder of the CCSGRAM buffer
- * has a full S/G element in it.
- */
- sg_prefetch_cnt_limit = -(sg_prefetch_cnt - sg_size + 1);
- download_consts[SG_PREFETCH_CNT] = sg_prefetch_cnt;
- download_consts[SG_PREFETCH_CNT_LIMIT] = sg_prefetch_cnt_limit;
- download_consts[SG_PREFETCH_ALIGN_MASK] = ~(sg_prefetch_align - 1);
- download_consts[SG_PREFETCH_ADDR_MASK] = (sg_prefetch_align - 1);
- download_consts[SG_SIZEOF] = sg_size;
- download_consts[PKT_OVERRUN_BUFOFFSET] =
- (ahd->overrun_buf - (uint8_t *)ahd->qoutfifo) / 256;
- download_consts[SCB_TRANSFER_SIZE] = SCB_TRANSFER_SIZE_1BYTE_LUN;
- if ((ahd->bugs & AHD_PKT_LUN_BUG) != 0)
- download_consts[SCB_TRANSFER_SIZE] = SCB_TRANSFER_SIZE_FULL_LUN;
- cur_patch = patches;
- downloaded = 0;
- skip_addr = 0;
- ahd_outb(ahd, SEQCTL0, PERRORDIS|FAILDIS|FASTMODE|LOADRAM);
- ahd_outb(ahd, PRGMCNT, 0);
- ahd_outb(ahd, PRGMCNT+1, 0);
-
- for (i = 0; i < sizeof(seqprog)/4; i++) {
- if (ahd_check_patch(ahd, &cur_patch, i, &skip_addr) == 0) {
- /*
- * Don't download this instruction as it
- * is in a patch that was removed.
- */
- continue;
- }
- /*
- * Move through the CS table until we find a CS
- * that might apply to this instruction.
- */
- for (; cur_cs < num_critical_sections; cur_cs++) {
- if (critical_sections[cur_cs].end <= i) {
- if (begin_set[cs_count] == TRUE
- && end_set[cs_count] == FALSE) {
- cs_table[cs_count].end = downloaded;
- end_set[cs_count] = TRUE;
- cs_count++;
- }
- continue;
- }
- if (critical_sections[cur_cs].begin <= i
- && begin_set[cs_count] == FALSE) {
- cs_table[cs_count].begin = downloaded;
- begin_set[cs_count] = TRUE;
- }
- break;
- }
- ahd_download_instr(ahd, i, download_consts);
- downloaded++;
- }
-
- ahd->num_critical_sections = cs_count;
- if (cs_count != 0) {
-
- cs_count *= sizeof(struct cs);
- ahd->critical_sections = malloc(cs_count, M_DEVBUF, M_NOWAIT);
- if (ahd->critical_sections == NULL)
- panic("ahd_loadseq: Could not malloc");
- memcpy(ahd->critical_sections, cs_table, cs_count);
- }
- ahd_outb(ahd, SEQCTL0, PERRORDIS|FAILDIS|FASTMODE);
-
- if (bootverbose) {
- printf(" %d instructions downloaded\n", downloaded);
- printf("%s: Features 0x%x, Bugs 0x%x, Flags 0x%x\n",
- ahd_name(ahd), ahd->features, ahd->bugs, ahd->flags);
- }
-}
-
-static int
-ahd_check_patch(struct ahd_softc *ahd, struct patch **start_patch,
- u_int start_instr, u_int *skip_addr)
-{
- struct patch *cur_patch;
- struct patch *last_patch;
- u_int num_patches;
-
- num_patches = sizeof(patches)/sizeof(struct patch);
- last_patch = &patches[num_patches];
- cur_patch = *start_patch;
-
- while (cur_patch < last_patch && start_instr == cur_patch->begin) {
-
- if (cur_patch->patch_func(ahd) == 0) {
-
- /* Start rejecting code */
- *skip_addr = start_instr + cur_patch->skip_instr;
- cur_patch += cur_patch->skip_patch;
- } else {
- /* Accepted this patch. Advance to the next
- * one and wait for our intruction pointer to
- * hit this point.
- */
- cur_patch++;
- }
- }
-
- *start_patch = cur_patch;
- if (start_instr < *skip_addr)
- /* Still skipping */
- return (0);
-
- return (1);
-}
-
-static u_int
-ahd_resolve_seqaddr(struct ahd_softc *ahd, u_int address)
-{
- struct patch *cur_patch;
- int address_offset;
- u_int skip_addr;
- u_int i;
-
- address_offset = 0;
- cur_patch = patches;
- skip_addr = 0;
-
- for (i = 0; i < address;) {
-
- ahd_check_patch(ahd, &cur_patch, i, &skip_addr);
-
- if (skip_addr > i) {
- int end_addr;
-
- end_addr = MIN(address, skip_addr);
- address_offset += end_addr - i;
- i = skip_addr;
- } else {
- i++;
- }
- }
- return (address - address_offset);
-}
-
-static void
-ahd_download_instr(struct ahd_softc *ahd, u_int instrptr, uint8_t *dconsts)
-{
- union ins_formats instr;
- struct ins_format1 *fmt1_ins;
- struct ins_format3 *fmt3_ins;
- u_int opcode;
-
- /*
- * The firmware is always compiled into a little endian format.
- */
- instr.integer = ahd_le32toh(*(uint32_t*)&seqprog[instrptr * 4]);
-
- fmt1_ins = &instr.format1;
- fmt3_ins = NULL;
-
- /* Pull the opcode */
- opcode = instr.format1.opcode;
- switch (opcode) {
- case AIC_OP_JMP:
- case AIC_OP_JC:
- case AIC_OP_JNC:
- case AIC_OP_CALL:
- case AIC_OP_JNE:
- case AIC_OP_JNZ:
- case AIC_OP_JE:
- case AIC_OP_JZ:
- {
- fmt3_ins = &instr.format3;
- fmt3_ins->address = ahd_resolve_seqaddr(ahd, fmt3_ins->address);
- /* FALLTHROUGH */
- }
- case AIC_OP_OR:
- case AIC_OP_AND:
- case AIC_OP_XOR:
- case AIC_OP_ADD:
- case AIC_OP_ADC:
- case AIC_OP_BMOV:
- if (fmt1_ins->parity != 0) {
- fmt1_ins->immediate = dconsts[fmt1_ins->immediate];
- }
- fmt1_ins->parity = 0;
- /* FALLTHROUGH */
- case AIC_OP_ROL:
- {
- int i, count;
-
- /* Calculate odd parity for the instruction */
- for (i = 0, count = 0; i < 31; i++) {
- uint32_t mask;
-
- mask = 0x01 << i;
- if ((instr.integer & mask) != 0)
- count++;
- }
- if ((count & 0x01) == 0)
- instr.format1.parity = 1;
-
- /* The sequencer is a little endian cpu */
- instr.integer = ahd_htole32(instr.integer);
- ahd_outsb(ahd, SEQRAM, instr.bytes, 4);
- break;
- }
- default:
- panic("Unknown opcode encountered in seq program");
- break;
- }
-}
-
-static int
-ahd_probe_stack_size(struct ahd_softc *ahd)
-{
- int last_probe;
-
- last_probe = 0;
- while (1) {
- int i;
-
- /*
- * We avoid using 0 as a pattern to avoid
- * confusion if the stack implementation
- * "back-fills" with zeros when "poping'
- * entries.
- */
- for (i = 1; i <= last_probe+1; i++) {
- ahd_outb(ahd, STACK, i & 0xFF);
- ahd_outb(ahd, STACK, (i >> 8) & 0xFF);
- }
-
- /* Verify */
- for (i = last_probe+1; i > 0; i--) {
- u_int stack_entry;
-
- stack_entry = ahd_inb(ahd, STACK)
- |(ahd_inb(ahd, STACK) << 8);
- if (stack_entry != i)
- goto sized;
- }
- last_probe++;
- }
-sized:
- return (last_probe);
-}
-
-void
-ahd_dump_all_cards_state()
-{
- struct ahd_softc *list_ahd;
-
- TAILQ_FOREACH(list_ahd, &ahd_tailq, links) {
- ahd_dump_card_state(list_ahd);
- }
-}
-
-int
-ahd_print_register(ahd_reg_parse_entry_t *table, u_int num_entries,
- const char *name, u_int address, u_int value,
- u_int *cur_column, u_int wrap_point)
-{
- int printed;
- u_int printed_mask;
-
- if (cur_column != NULL && *cur_column >= wrap_point) {
- printf("\n");
- *cur_column = 0;
- }
- printed = printf("%s[0x%x]", name, value);
- if (table == NULL) {
- printed += printf(" ");
- *cur_column += printed;
- return (printed);
- }
- printed_mask = 0;
- while (printed_mask != 0xFF) {
- int entry;
-
- for (entry = 0; entry < num_entries; entry++) {
- if (((value & table[entry].mask)
- != table[entry].value)
- || ((printed_mask & table[entry].mask)
- == table[entry].mask))
- continue;
-
- printed += printf("%s%s",
- printed_mask == 0 ? ":(" : "|",
- table[entry].name);
- printed_mask |= table[entry].mask;
-
- break;
- }
- if (entry >= num_entries)
- break;
- }
- if (printed_mask != 0)
- printed += printf(") ");
- else
- printed += printf(" ");
- if (cur_column != NULL)
- *cur_column += printed;
- return (printed);
-}
-
-void
-ahd_dump_card_state(struct ahd_softc *ahd)
-{
- struct scb *scb;
- ahd_mode_state saved_modes;
- u_int dffstat;
- int paused;
- u_int scb_index;
- u_int saved_scb_index;
- u_int cur_col;
- int i;
-
- if (ahd_is_paused(ahd)) {
- paused = 1;
- } else {
- paused = 0;
- ahd_pause(ahd);
- }
- saved_modes = ahd_save_modes(ahd);
- ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
- printf(">>>>>>>>>>>>>>>>>> Dump Card State Begins <<<<<<<<<<<<<<<<<\n"
- "%s: Dumping Card State at program address 0x%x Mode 0x%x\n",
- ahd_name(ahd),
- ahd_inb(ahd, CURADDR) | (ahd_inb(ahd, CURADDR+1) << 8),
- ahd_build_mode_state(ahd, ahd->saved_src_mode,
- ahd->saved_dst_mode));
- if (paused)
- printf("Card was paused\n");
- /*
- * Mode independent registers.
- */
- cur_col = 0;
- ahd_hs_mailbox_print(ahd_inb(ahd, LOCAL_HS_MAILBOX), &cur_col, 50);
- ahd_intctl_print(ahd_inb(ahd, INTCTL), &cur_col, 50);
- ahd_seqintstat_print(ahd_inb(ahd, SEQINTSTAT), &cur_col, 50);
- ahd_saved_mode_print(ahd_inb(ahd, SAVED_MODE), &cur_col, 50);
- ahd_dffstat_print(ahd_inb(ahd, DFFSTAT), &cur_col, 50);
- ahd_scsisigi_print(ahd_inb(ahd, SCSISIGI), &cur_col, 50);
- ahd_scsiphase_print(ahd_inb(ahd, SCSIPHASE), &cur_col, 50);
- ahd_scsibus_print(ahd_inb(ahd, SCSIBUS), &cur_col, 50);
- ahd_lastphase_print(ahd_inb(ahd, LASTPHASE), &cur_col, 50);
- ahd_scsiseq0_print(ahd_inb(ahd, SCSISEQ0), &cur_col, 50);
- ahd_scsiseq1_print(ahd_inb(ahd, SCSISEQ1), &cur_col, 50);
- ahd_seqctl0_print(ahd_inb(ahd, SEQCTL0), &cur_col, 50);
- ahd_seqintctl_print(ahd_inb(ahd, SEQINTCTL), &cur_col, 50);
- ahd_seq_flags_print(ahd_inb(ahd, SEQ_FLAGS), &cur_col, 50);
- ahd_seq_flags2_print(ahd_inb(ahd, SEQ_FLAGS2), &cur_col, 50);
- ahd_sstat0_print(ahd_inb(ahd, SSTAT0), &cur_col, 50);
- ahd_sstat1_print(ahd_inb(ahd, SSTAT1), &cur_col, 50);
- ahd_sstat2_print(ahd_inb(ahd, SSTAT2), &cur_col, 50);
- ahd_sstat3_print(ahd_inb(ahd, SSTAT3), &cur_col, 50);
- ahd_perrdiag_print(ahd_inb(ahd, PERRDIAG), &cur_col, 50);
- ahd_simode1_print(ahd_inb(ahd, SIMODE1), &cur_col, 50);
- ahd_lqistat0_print(ahd_inb(ahd, LQISTAT0), &cur_col, 50);
- ahd_lqistat1_print(ahd_inb(ahd, LQISTAT1), &cur_col, 50);
- ahd_lqistat2_print(ahd_inb(ahd, LQISTAT2), &cur_col, 50);
- ahd_lqostat0_print(ahd_inb(ahd, LQOSTAT0), &cur_col, 50);
- ahd_lqostat1_print(ahd_inb(ahd, LQOSTAT1), &cur_col, 50);
- ahd_lqostat2_print(ahd_inb(ahd, LQOSTAT2), &cur_col, 50);
- printf("\n");
- printf("\nSCB Count = %d CMDS_PENDING = %d LASTSCB 0x%x "
- "CURRSCB 0x%x NEXTSCB 0x%x\n",
- ahd->scb_data.numscbs, ahd_inw(ahd, CMDS_PENDING),
- ahd_inw(ahd, LASTSCB), ahd_inw(ahd, CURRSCB),
- ahd_inw(ahd, NEXTSCB));
- cur_col = 0;
- /* QINFIFO */
- ahd_search_qinfifo(ahd, CAM_TARGET_WILDCARD, ALL_CHANNELS,
- CAM_LUN_WILDCARD, SCB_LIST_NULL,
- ROLE_UNKNOWN, /*status*/0, SEARCH_PRINT);
- saved_scb_index = ahd_get_scbptr(ahd);
- printf("Pending list:");
- i = 0;
- LIST_FOREACH(scb, &ahd->pending_scbs, pending_links) {
- if (i++ > AHD_SCB_MAX)
- break;
- cur_col = printf("\n%3d ", SCB_GET_TAG(scb));
- ahd_set_scbptr(ahd, SCB_GET_TAG(scb));
- ahd_scb_control_print(ahd_inb(ahd, SCB_CONTROL), &cur_col, 60);
- ahd_scb_scsiid_print(ahd_inb(ahd, SCB_SCSIID), &cur_col, 60);
- ahd_scb_tag_print(ahd_inb(ahd, SCB_TAG), &cur_col, 60);
- }
- printf("\nTotal %d\n", i);
-
- printf("Kernel Free SCB list: ");
- i = 0;
- TAILQ_FOREACH(scb, &ahd->scb_data.free_scbs, links.tqe) {
- struct scb *list_scb;
-
- list_scb = scb;
- do {
- printf("%d ", SCB_GET_TAG(list_scb));
- list_scb = LIST_NEXT(list_scb, collision_links);
- } while (list_scb && i++ < AHD_SCB_MAX);
- }
-
- LIST_FOREACH(scb, &ahd->scb_data.any_dev_free_scb_list, links.le) {
- if (i++ > AHD_SCB_MAX)
- break;
- printf("%d ", SCB_GET_TAG(scb));
- }
- printf("\n");
-
- printf("Sequencer Complete DMA-inprog list: ");
- scb_index = ahd_inw(ahd, COMPLETE_SCB_DMAINPROG_HEAD);
- i = 0;
- while (!SCBID_IS_NULL(scb_index) && i++ < AHD_SCB_MAX) {
- ahd_set_scbptr(ahd, scb_index);
- printf("%d ", scb_index);
- scb_index = ahd_inw(ahd, SCB_NEXT_COMPLETE);
- }
- printf("\n");
-
- printf("Sequencer Complete list: ");
- scb_index = ahd_inw(ahd, COMPLETE_SCB_HEAD);
- i = 0;
- while (!SCBID_IS_NULL(scb_index) && i++ < AHD_SCB_MAX) {
- ahd_set_scbptr(ahd, scb_index);
- printf("%d ", scb_index);
- scb_index = ahd_inw(ahd, SCB_NEXT_COMPLETE);
- }
- printf("\n");
-
-
- printf("Sequencer DMA-Up and Complete list: ");
- scb_index = ahd_inw(ahd, COMPLETE_DMA_SCB_HEAD);
- i = 0;
- while (!SCBID_IS_NULL(scb_index) && i++ < AHD_SCB_MAX) {
- ahd_set_scbptr(ahd, scb_index);
- printf("%d ", scb_index);
- scb_index = ahd_inw(ahd, SCB_NEXT_COMPLETE);
- }
- printf("\n");
- ahd_set_scbptr(ahd, saved_scb_index);
- dffstat = ahd_inb(ahd, DFFSTAT);
- for (i = 0; i < 2; i++) {
-#ifdef AHD_DEBUG
- struct scb *fifo_scb;
-#endif
- u_int fifo_scbptr;
-
- ahd_set_modes(ahd, AHD_MODE_DFF0 + i, AHD_MODE_DFF0 + i);
- fifo_scbptr = ahd_get_scbptr(ahd);
- printf("\n%s: FIFO%d %s, LONGJMP == 0x%x, "
- "SCB 0x%x, LJSCB 0x%x\n",
- ahd_name(ahd), i,
- (dffstat & (FIFO0FREE << i)) ? "Free" : "Active",
- ahd_inw(ahd, LONGJMP_ADDR), fifo_scbptr,
- ahd_inw(ahd, LONGJMP_SCB));
- cur_col = 0;
- ahd_seqimode_print(ahd_inb(ahd, SEQIMODE), &cur_col, 50);
- ahd_seqintsrc_print(ahd_inb(ahd, SEQINTSRC), &cur_col, 50);
- ahd_dfcntrl_print(ahd_inb(ahd, DFCNTRL), &cur_col, 50);
- ahd_dfstatus_print(ahd_inb(ahd, DFSTATUS), &cur_col, 50);
- ahd_sg_cache_shadow_print(ahd_inb(ahd, SG_CACHE_SHADOW),
- &cur_col, 50);
- ahd_sg_state_print(ahd_inb(ahd, SG_STATE), &cur_col, 50);
- ahd_dffsxfrctl_print(ahd_inb(ahd, DFFSXFRCTL), &cur_col, 50);
- ahd_soffcnt_print(ahd_inb(ahd, SOFFCNT), &cur_col, 50);
- ahd_mdffstat_print(ahd_inb(ahd, MDFFSTAT), &cur_col, 50);
- if (cur_col > 50) {
- printf("\n");
- cur_col = 0;
- }
- cur_col += printf("SHADDR = 0x%x%x, SHCNT = 0x%x ",
- ahd_inl(ahd, SHADDR+4),
- ahd_inl(ahd, SHADDR),
- (ahd_inb(ahd, SHCNT)
- | (ahd_inb(ahd, SHCNT + 1) << 8)
- | (ahd_inb(ahd, SHCNT + 2) << 16)));
- if (cur_col > 50) {
- printf("\n");
- cur_col = 0;
- }
- cur_col += printf("HADDR = 0x%x%x, HCNT = 0x%x ",
- ahd_inl(ahd, HADDR+4),
- ahd_inl(ahd, HADDR),
- (ahd_inb(ahd, HCNT)
- | (ahd_inb(ahd, HCNT + 1) << 8)
- | (ahd_inb(ahd, HCNT + 2) << 16)));
- ahd_ccsgctl_print(ahd_inb(ahd, CCSGCTL), &cur_col, 50);
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_SG) != 0) {
- fifo_scb = ahd_lookup_scb(ahd, fifo_scbptr);
- if (fifo_scb != NULL)
- ahd_dump_sglist(fifo_scb);
- }
-#endif
- }
- printf("\nLQIN: ");
- for (i = 0; i < 20; i++)
- printf("0x%x ", ahd_inb(ahd, LQIN + i));
- printf("\n");
- ahd_set_modes(ahd, AHD_MODE_CFG, AHD_MODE_CFG);
- printf("%s: LQISTATE = 0x%x, LQOSTATE = 0x%x, OPTIONMODE = 0x%x\n",
- ahd_name(ahd), ahd_inb(ahd, LQISTATE), ahd_inb(ahd, LQOSTATE),
- ahd_inb(ahd, OPTIONMODE));
- printf("%s: OS_SPACE_CNT = 0x%x MAXCMDCNT = 0x%x\n",
- ahd_name(ahd), ahd_inb(ahd, OS_SPACE_CNT),
- ahd_inb(ahd, MAXCMDCNT));
- ahd_simode0_print(ahd_inb(ahd, SIMODE0), &cur_col, 50);
- printf("\n");
- ahd_set_modes(ahd, AHD_MODE_CCHAN, AHD_MODE_CCHAN);
- cur_col = 0;
- ahd_ccscbctl_print(ahd_inb(ahd, CCSCBCTL), &cur_col, 50);
- printf("\n");
- ahd_set_modes(ahd, ahd->saved_src_mode, ahd->saved_dst_mode);
- printf("%s: REG0 == 0x%x, SINDEX = 0x%x, DINDEX = 0x%x\n",
- ahd_name(ahd), ahd_inw(ahd, REG0), ahd_inw(ahd, SINDEX),
- ahd_inw(ahd, DINDEX));
- printf("%s: SCBPTR == 0x%x, SCB_NEXT == 0x%x, SCB_NEXT2 == 0x%x\n",
- ahd_name(ahd), ahd_get_scbptr(ahd), ahd_inw(ahd, SCB_NEXT),
- ahd_inw(ahd, SCB_NEXT2));
- printf("CDB %x %x %x %x %x %x\n",
- ahd_inb(ahd, SCB_CDB_STORE),
- ahd_inb(ahd, SCB_CDB_STORE+1),
- ahd_inb(ahd, SCB_CDB_STORE+2),
- ahd_inb(ahd, SCB_CDB_STORE+3),
- ahd_inb(ahd, SCB_CDB_STORE+4),
- ahd_inb(ahd, SCB_CDB_STORE+5));
- printf("STACK:");
- for (i = 0; i < ahd->stack_size; i++) {
- ahd->saved_stack[i] =
- ahd_inb(ahd, STACK)|(ahd_inb(ahd, STACK) << 8);
- printf(" 0x%x", ahd->saved_stack[i]);
- }
- for (i = ahd->stack_size-1; i >= 0; i--) {
- ahd_outb(ahd, STACK, ahd->saved_stack[i] & 0xFF);
- ahd_outb(ahd, STACK, (ahd->saved_stack[i] >> 8) & 0xFF);
- }
- printf("\n<<<<<<<<<<<<<<<<< Dump Card State Ends >>>>>>>>>>>>>>>>>>\n");
- ahd_platform_dump_card_state(ahd);
- ahd_restore_modes(ahd, saved_modes);
- if (paused == 0)
- ahd_unpause(ahd);
-}
-
-void
-ahd_dump_scbs(struct ahd_softc *ahd)
-{
- ahd_mode_state saved_modes;
- u_int saved_scb_index;
- int i;
-
- saved_modes = ahd_save_modes(ahd);
- ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
- saved_scb_index = ahd_get_scbptr(ahd);
- for (i = 0; i < AHD_SCB_MAX; i++) {
- ahd_set_scbptr(ahd, i);
- printf("%3d", i);
- printf("(CTRL 0x%x ID 0x%x N 0x%x N2 0x%x SG 0x%x, RSG 0x%x)\n",
- ahd_inb(ahd, SCB_CONTROL),
- ahd_inb(ahd, SCB_SCSIID), ahd_inw(ahd, SCB_NEXT),
- ahd_inw(ahd, SCB_NEXT2), ahd_inl(ahd, SCB_SGPTR),
- ahd_inl(ahd, SCB_RESIDUAL_SGPTR));
- }
- printf("\n");
- ahd_set_scbptr(ahd, saved_scb_index);
- ahd_restore_modes(ahd, saved_modes);
-}
-
-/**************************** Flexport Logic **********************************/
-/*
- * Read count 16bit words from 16bit word address start_addr from the
- * SEEPROM attached to the controller, into buf, using the controller's
- * SEEPROM reading state machine.
- */
-int
-ahd_read_seeprom(struct ahd_softc *ahd, uint16_t *buf,
- u_int start_addr, u_int count)
-{
- u_int cur_addr;
- u_int end_addr;
- int error;
-
- /*
- * If we never make it through the loop even once,
- * we were passed invalid arguments.
- */
- error = EINVAL;
- AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK);
- end_addr = start_addr + count;
- for (cur_addr = start_addr; cur_addr < end_addr; cur_addr++) {
- ahd_outb(ahd, SEEADR, cur_addr);
- ahd_outb(ahd, SEECTL, SEEOP_READ | SEESTART);
-
- error = ahd_wait_seeprom(ahd);
- if (error)
- break;
- *buf++ = ahd_inw(ahd, SEEDAT);
- }
- return (error);
-}
-
-/*
- * Write count 16bit words from buf, into SEEPROM attache to the
- * controller starting at 16bit word address start_addr, using the
- * controller's SEEPROM writing state machine.
- */
-int
-ahd_write_seeprom(struct ahd_softc *ahd, uint16_t *buf,
- u_int start_addr, u_int count)
-{
- u_int cur_addr;
- u_int end_addr;
- int error;
- int retval;
-
- AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK);
- error = ENOENT;
-
- /* Place the chip into write-enable mode */
- ahd_outb(ahd, SEEADR, SEEOP_EWEN_ADDR);
- ahd_outb(ahd, SEECTL, SEEOP_EWEN | SEESTART);
- error = ahd_wait_seeprom(ahd);
- if (error)
- return (error);
-
- /*
- * Write the data. If we don't get throught the loop at
- * least once, the arguments were invalid.
- */
- retval = EINVAL;
- end_addr = start_addr + count;
- for (cur_addr = start_addr; cur_addr < end_addr; cur_addr++) {
- ahd_outw(ahd, SEEDAT, *buf++);
- ahd_outb(ahd, SEEADR, cur_addr);
- ahd_outb(ahd, SEECTL, SEEOP_WRITE | SEESTART);
-
- retval = ahd_wait_seeprom(ahd);
- if (retval)
- break;
- }
-
- /*
- * Disable writes.
- */
- ahd_outb(ahd, SEEADR, SEEOP_EWDS_ADDR);
- ahd_outb(ahd, SEECTL, SEEOP_EWDS | SEESTART);
- error = ahd_wait_seeprom(ahd);
- if (error)
- return (error);
- return (retval);
-}
-
-/*
- * Wait ~100us for the serial eeprom to satisfy our request.
- */
-int
-ahd_wait_seeprom(struct ahd_softc *ahd)
-{
- int cnt;
-
- cnt = 20;
- while ((ahd_inb(ahd, SEESTAT) & (SEEARBACK|SEEBUSY)) != 0 && --cnt)
- ahd_delay(5);
-
- if (cnt == 0)
- return (ETIMEDOUT);
- return (0);
-}
-
-int
-ahd_verify_cksum(struct seeprom_config *sc)
-{
- int i;
- int maxaddr;
- uint32_t checksum;
- uint16_t *scarray;
-
- maxaddr = (sizeof(*sc)/2) - 1;
- checksum = 0;
- scarray = (uint16_t *)sc;
-
- for (i = 0; i < maxaddr; i++)
- checksum = checksum + scarray[i];
- if (checksum == 0
- || (checksum & 0xFFFF) != sc->checksum) {
- return (0);
- } else {
- return (1);
- }
-}
-
-int
-ahd_acquire_seeprom(struct ahd_softc *ahd)
-{
- /*
- * We should be able to determine the SEEPROM type
- * from the flexport logic, but unfortunately not
- * all implementations have this logic and there is
- * no programatic method for determining if the logic
- * is present.
- */
- return (1);
-#if 0
- uint8_t seetype;
- int error;
-
- error = ahd_read_flexport(ahd, FLXADDR_ROMSTAT_CURSENSECTL, &seetype);
- if (error != 0
- || ((seetype & FLX_ROMSTAT_SEECFG) == FLX_ROMSTAT_SEE_NONE))
- return (0);
- return (1);
-#endif
-}
-
-void
-ahd_release_seeprom(struct ahd_softc *ahd)
-{
- /* Currently a no-op */
-}
-
-int
-ahd_write_flexport(struct ahd_softc *ahd, u_int addr, u_int value)
-{
- int error;
-
- AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK);
- if (addr > 7)
- panic("ahd_write_flexport: address out of range");
- ahd_outb(ahd, BRDCTL, BRDEN|(addr << 3));
- error = ahd_wait_flexport(ahd);
- if (error != 0)
- return (error);
- ahd_outb(ahd, BRDDAT, value);
- ahd_flush_device_writes(ahd);
- ahd_outb(ahd, BRDCTL, BRDSTB|BRDEN|(addr << 3));
- ahd_flush_device_writes(ahd);
- ahd_outb(ahd, BRDCTL, BRDEN|(addr << 3));
- ahd_flush_device_writes(ahd);
- ahd_outb(ahd, BRDCTL, 0);
- ahd_flush_device_writes(ahd);
- return (0);
-}
-
-int
-ahd_read_flexport(struct ahd_softc *ahd, u_int addr, uint8_t *value)
-{
- int error;
-
- AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK);
- if (addr > 7)
- panic("ahd_read_flexport: address out of range");
- ahd_outb(ahd, BRDCTL, BRDRW|BRDEN|(addr << 3));
- error = ahd_wait_flexport(ahd);
- if (error != 0)
- return (error);
- *value = ahd_inb(ahd, BRDDAT);
- ahd_outb(ahd, BRDCTL, 0);
- ahd_flush_device_writes(ahd);
- return (0);
-}
-
-/*
- * Wait at most 2 seconds for flexport arbitration to succeed.
- */
-int
-ahd_wait_flexport(struct ahd_softc *ahd)
-{
- int cnt;
-
- AHD_ASSERT_MODES(ahd, AHD_MODE_SCSI_MSK, AHD_MODE_SCSI_MSK);
- cnt = 1000000 * 2 / 5;
- while ((ahd_inb(ahd, BRDCTL) & FLXARBACK) == 0 && --cnt)
- ahd_delay(5);
-
- if (cnt == 0)
- return (ETIMEDOUT);
- return (0);
-}
-
-/************************* Target Mode ****************************************/
-#ifdef AHD_TARGET_MODE
-cam_status
-ahd_find_tmode_devs(struct ahd_softc *ahd, struct cam_sim *sim, union ccb *ccb,
- struct ahd_tmode_tstate **tstate,
- struct ahd_tmode_lstate **lstate,
- int notfound_failure)
-{
-
- if ((ahd->features & AHD_TARGETMODE) == 0)
- return (CAM_REQ_INVALID);
-
- /*
- * Handle the 'black hole' device that sucks up
- * requests to unattached luns on enabled targets.
- */
- if (ccb->ccb_h.target_id == CAM_TARGET_WILDCARD
- && ccb->ccb_h.target_lun == CAM_LUN_WILDCARD) {
- *tstate = NULL;
- *lstate = ahd->black_hole;
- } else {
- u_int max_id;
-
- max_id = (ahd->features & AHD_WIDE) ? 15 : 7;
- if (ccb->ccb_h.target_id > max_id)
- return (CAM_TID_INVALID);
-
- if (ccb->ccb_h.target_lun >= AHD_NUM_LUNS)
- return (CAM_LUN_INVALID);
-
- *tstate = ahd->enabled_targets[ccb->ccb_h.target_id];
- *lstate = NULL;
- if (*tstate != NULL)
- *lstate =
- (*tstate)->enabled_luns[ccb->ccb_h.target_lun];
- }
-
- if (notfound_failure != 0 && *lstate == NULL)
- return (CAM_PATH_INVALID);
-
- return (CAM_REQ_CMP);
-}
-
-void
-ahd_handle_en_lun(struct ahd_softc *ahd, struct cam_sim *sim, union ccb *ccb)
-{
-#if NOT_YET
- struct ahd_tmode_tstate *tstate;
- struct ahd_tmode_lstate *lstate;
- struct ccb_en_lun *cel;
- cam_status status;
- u_int target;
- u_int lun;
- u_int target_mask;
- u_long s;
- char channel;
-
- status = ahd_find_tmode_devs(ahd, sim, ccb, &tstate, &lstate,
- /*notfound_failure*/FALSE);
-
- if (status != CAM_REQ_CMP) {
- ccb->ccb_h.status = status;
- return;
- }
-
- if ((ahd->features & AHD_MULTIROLE) != 0) {
- u_int our_id;
-
- our_id = ahd->our_id;
- if (ccb->ccb_h.target_id != our_id) {
- if ((ahd->features & AHD_MULTI_TID) != 0
- && (ahd->flags & AHD_INITIATORROLE) != 0) {
- /*
- * Only allow additional targets if
- * the initiator role is disabled.
- * The hardware cannot handle a re-select-in
- * on the initiator id during a re-select-out
- * on a different target id.
- */
- status = CAM_TID_INVALID;
- } else if ((ahd->flags & AHD_INITIATORROLE) != 0
- || ahd->enabled_luns > 0) {
- /*
- * Only allow our target id to change
- * if the initiator role is not configured
- * and there are no enabled luns which
- * are attached to the currently registered
- * scsi id.
- */
- status = CAM_TID_INVALID;
- }
- }
- }
-
- if (status != CAM_REQ_CMP) {
- ccb->ccb_h.status = status;
- return;
- }
-
- /*
- * We now have an id that is valid.
- * If we aren't in target mode, switch modes.
- */
- if ((ahd->flags & AHD_TARGETROLE) == 0
- && ccb->ccb_h.target_id != CAM_TARGET_WILDCARD) {
- u_long s;
-
- printf("Configuring Target Mode\n");
- ahd_lock(ahd, &s);
- if (LIST_FIRST(&ahd->pending_scbs) != NULL) {
- ccb->ccb_h.status = CAM_BUSY;
- ahd_unlock(ahd, &s);
- return;
- }
- ahd->flags |= AHD_TARGETROLE;
- if ((ahd->features & AHD_MULTIROLE) == 0)
- ahd->flags &= ~AHD_INITIATORROLE;
- ahd_pause(ahd);
- ahd_loadseq(ahd);
- ahd_unlock(ahd, &s);
- }
- cel = &ccb->cel;
- target = ccb->ccb_h.target_id;
- lun = ccb->ccb_h.target_lun;
- channel = SIM_CHANNEL(ahd, sim);
- target_mask = 0x01 << target;
- if (channel == 'B')
- target_mask <<= 8;
-
- if (cel->enable != 0) {
- u_int scsiseq1;
-
- /* Are we already enabled?? */
- if (lstate != NULL) {
- xpt_print_path(ccb->ccb_h.path);
- printf("Lun already enabled\n");
- ccb->ccb_h.status = CAM_LUN_ALRDY_ENA;
- return;
- }
-
- if (cel->grp6_len != 0
- || cel->grp7_len != 0) {
- /*
- * Don't (yet?) support vendor
- * specific commands.
- */
- ccb->ccb_h.status = CAM_REQ_INVALID;
- printf("Non-zero Group Codes\n");
- return;
- }
-
- /*
- * Seems to be okay.
- * Setup our data structures.
- */
- if (target != CAM_TARGET_WILDCARD && tstate == NULL) {
- tstate = ahd_alloc_tstate(ahd, target, channel);
- if (tstate == NULL) {
- xpt_print_path(ccb->ccb_h.path);
- printf("Couldn't allocate tstate\n");
- ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
- return;
- }
- }
- lstate = malloc(sizeof(*lstate), M_DEVBUF, M_NOWAIT);
- if (lstate == NULL) {
- xpt_print_path(ccb->ccb_h.path);
- printf("Couldn't allocate lstate\n");
- ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
- return;
- }
- memset(lstate, 0, sizeof(*lstate));
- status = xpt_create_path(&lstate->path, /*periph*/NULL,
- xpt_path_path_id(ccb->ccb_h.path),
- xpt_path_target_id(ccb->ccb_h.path),
- xpt_path_lun_id(ccb->ccb_h.path));
- if (status != CAM_REQ_CMP) {
- free(lstate, M_DEVBUF);
- xpt_print_path(ccb->ccb_h.path);
- printf("Couldn't allocate path\n");
- ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
- return;
- }
- SLIST_INIT(&lstate->accept_tios);
- SLIST_INIT(&lstate->immed_notifies);
- ahd_lock(ahd, &s);
- ahd_pause(ahd);
- if (target != CAM_TARGET_WILDCARD) {
- tstate->enabled_luns[lun] = lstate;
- ahd->enabled_luns++;
-
- if ((ahd->features & AHD_MULTI_TID) != 0) {
- u_int targid_mask;
-
- targid_mask = ahd_inb(ahd, TARGID)
- | (ahd_inb(ahd, TARGID + 1) << 8);
-
- targid_mask |= target_mask;
- ahd_outb(ahd, TARGID, targid_mask);
- ahd_outb(ahd, TARGID+1, (targid_mask >> 8));
-
- ahd_update_scsiid(ahd, targid_mask);
- } else {
- u_int our_id;
- char channel;
-
- channel = SIM_CHANNEL(ahd, sim);
- our_id = SIM_SCSI_ID(ahd, sim);
-
- /*
- * This can only happen if selections
- * are not enabled
- */
- if (target != our_id) {
- u_int sblkctl;
- char cur_channel;
- int swap;
-
- sblkctl = ahd_inb(ahd, SBLKCTL);
- cur_channel = (sblkctl & SELBUSB)
- ? 'B' : 'A';
- if ((ahd->features & AHD_TWIN) == 0)
- cur_channel = 'A';
- swap = cur_channel != channel;
- ahd->our_id = target;
-
- if (swap)
- ahd_outb(ahd, SBLKCTL,
- sblkctl ^ SELBUSB);
-
- ahd_outb(ahd, SCSIID, target);
-
- if (swap)
- ahd_outb(ahd, SBLKCTL, sblkctl);
- }
- }
- } else
- ahd->black_hole = lstate;
- /* Allow select-in operations */
- if (ahd->black_hole != NULL && ahd->enabled_luns > 0) {
- scsiseq1 = ahd_inb(ahd, SCSISEQ_TEMPLATE);
- scsiseq1 |= ENSELI;
- ahd_outb(ahd, SCSISEQ_TEMPLATE, scsiseq1);
- scsiseq1 = ahd_inb(ahd, SCSISEQ1);
- scsiseq1 |= ENSELI;
- ahd_outb(ahd, SCSISEQ1, scsiseq1);
- }
- ahd_unpause(ahd);
- ahd_unlock(ahd, &s);
- ccb->ccb_h.status = CAM_REQ_CMP;
- xpt_print_path(ccb->ccb_h.path);
- printf("Lun now enabled for target mode\n");
- } else {
- struct scb *scb;
- int i, empty;
-
- if (lstate == NULL) {
- ccb->ccb_h.status = CAM_LUN_INVALID;
- return;
- }
-
- ahd_lock(ahd, &s);
-
- ccb->ccb_h.status = CAM_REQ_CMP;
- LIST_FOREACH(scb, &ahd->pending_scbs, pending_links) {
- struct ccb_hdr *ccbh;
-
- ccbh = &scb->io_ctx->ccb_h;
- if (ccbh->func_code == XPT_CONT_TARGET_IO
- && !xpt_path_comp(ccbh->path, ccb->ccb_h.path)){
- printf("CTIO pending\n");
- ccb->ccb_h.status = CAM_REQ_INVALID;
- ahd_unlock(ahd, &s);
- return;
- }
- }
-
- if (SLIST_FIRST(&lstate->accept_tios) != NULL) {
- printf("ATIOs pending\n");
- ccb->ccb_h.status = CAM_REQ_INVALID;
- }
-
- if (SLIST_FIRST(&lstate->immed_notifies) != NULL) {
- printf("INOTs pending\n");
- ccb->ccb_h.status = CAM_REQ_INVALID;
- }
-
- if (ccb->ccb_h.status != CAM_REQ_CMP) {
- ahd_unlock(ahd, &s);
- return;
- }
-
- xpt_print_path(ccb->ccb_h.path);
- printf("Target mode disabled\n");
- xpt_free_path(lstate->path);
- free(lstate, M_DEVBUF);
-
- ahd_pause(ahd);
- /* Can we clean up the target too? */
- if (target != CAM_TARGET_WILDCARD) {
- tstate->enabled_luns[lun] = NULL;
- ahd->enabled_luns--;
- for (empty = 1, i = 0; i < 8; i++)
- if (tstate->enabled_luns[i] != NULL) {
- empty = 0;
- break;
- }
-
- if (empty) {
- ahd_free_tstate(ahd, target, channel,
- /*force*/FALSE);
- if (ahd->features & AHD_MULTI_TID) {
- u_int targid_mask;
-
- targid_mask = ahd_inb(ahd, TARGID)
- | (ahd_inb(ahd, TARGID + 1)
- << 8);
-
- targid_mask &= ~target_mask;
- ahd_outb(ahd, TARGID, targid_mask);
- ahd_outb(ahd, TARGID+1,
- (targid_mask >> 8));
- ahd_update_scsiid(ahd, targid_mask);
- }
- }
- } else {
-
- ahd->black_hole = NULL;
-
- /*
- * We can't allow selections without
- * our black hole device.
- */
- empty = TRUE;
- }
- if (ahd->enabled_luns == 0) {
- /* Disallow select-in */
- u_int scsiseq1;
-
- scsiseq1 = ahd_inb(ahd, SCSISEQ_TEMPLATE);
- scsiseq1 &= ~ENSELI;
- ahd_outb(ahd, SCSISEQ_TEMPLATE, scsiseq1);
- scsiseq1 = ahd_inb(ahd, SCSISEQ1);
- scsiseq1 &= ~ENSELI;
- ahd_outb(ahd, SCSISEQ1, scsiseq1);
-
- if ((ahd->features & AHD_MULTIROLE) == 0) {
- printf("Configuring Initiator Mode\n");
- ahd->flags &= ~AHD_TARGETROLE;
- ahd->flags |= AHD_INITIATORROLE;
- ahd_pause(ahd);
- ahd_loadseq(ahd);
- }
- }
- ahd_unpause(ahd);
- ahd_unlock(ahd, &s);
- }
-#endif
-}
-
-static void
-ahd_update_scsiid(struct ahd_softc *ahd, u_int targid_mask)
-{
-#if NOT_YET
- u_int scsiid_mask;
- u_int scsiid;
-
- if ((ahd->features & AHD_MULTI_TID) == 0)
- panic("ahd_update_scsiid called on non-multitid unit\n");
-
- /*
- * Since we will rely on the TARGID mask
- * for selection enables, ensure that OID
- * in SCSIID is not set to some other ID
- * that we don't want to allow selections on.
- */
- if ((ahd->features & AHD_ULTRA2) != 0)
- scsiid = ahd_inb(ahd, SCSIID_ULTRA2);
- else
- scsiid = ahd_inb(ahd, SCSIID);
- scsiid_mask = 0x1 << (scsiid & OID);
- if ((targid_mask & scsiid_mask) == 0) {
- u_int our_id;
-
- /* ffs counts from 1 */
- our_id = ffs(targid_mask);
- if (our_id == 0)
- our_id = ahd->our_id;
- else
- our_id--;
- scsiid &= TID;
- scsiid |= our_id;
- }
- if ((ahd->features & AHD_ULTRA2) != 0)
- ahd_outb(ahd, SCSIID_ULTRA2, scsiid);
- else
- ahd_outb(ahd, SCSIID, scsiid);
-#endif
-}
-
-void
-ahd_run_tqinfifo(struct ahd_softc *ahd, int paused)
-{
- struct target_cmd *cmd;
-
- ahd_sync_tqinfifo(ahd, BUS_DMASYNC_POSTREAD);
- while ((cmd = &ahd->targetcmds[ahd->tqinfifonext])->cmd_valid != 0) {
-
- /*
- * Only advance through the queue if we
- * have the resources to process the command.
- */
- if (ahd_handle_target_cmd(ahd, cmd) != 0)
- break;
-
- cmd->cmd_valid = 0;
- ahd_dmamap_sync(ahd, ahd->shared_data_dmat,
- ahd->shared_data_dmamap,
- ahd_targetcmd_offset(ahd, ahd->tqinfifonext),
- sizeof(struct target_cmd),
- BUS_DMASYNC_PREREAD);
- ahd->tqinfifonext++;
-
- /*
- * Lazily update our position in the target mode incoming
- * command queue as seen by the sequencer.
- */
- if ((ahd->tqinfifonext & (HOST_TQINPOS - 1)) == 1) {
- u_int hs_mailbox;
-
- hs_mailbox = ahd_inb(ahd, HS_MAILBOX);
- hs_mailbox &= ~HOST_TQINPOS;
- hs_mailbox |= ahd->tqinfifonext & HOST_TQINPOS;
- ahd_outb(ahd, HS_MAILBOX, hs_mailbox);
- }
- }
-}
-
-static int
-ahd_handle_target_cmd(struct ahd_softc *ahd, struct target_cmd *cmd)
-{
- struct ahd_tmode_tstate *tstate;
- struct ahd_tmode_lstate *lstate;
- struct ccb_accept_tio *atio;
- uint8_t *byte;
- int initiator;
- int target;
- int lun;
-
- initiator = SCSIID_TARGET(ahd, cmd->scsiid);
- target = SCSIID_OUR_ID(cmd->scsiid);
- lun = (cmd->identify & MSG_IDENTIFY_LUNMASK);
-
- byte = cmd->bytes;
- tstate = ahd->enabled_targets[target];
- lstate = NULL;
- if (tstate != NULL)
- lstate = tstate->enabled_luns[lun];
-
- /*
- * Commands for disabled luns go to the black hole driver.
- */
- if (lstate == NULL)
- lstate = ahd->black_hole;
-
- atio = (struct ccb_accept_tio*)SLIST_FIRST(&lstate->accept_tios);
- if (atio == NULL) {
- ahd->flags |= AHD_TQINFIFO_BLOCKED;
- /*
- * Wait for more ATIOs from the peripheral driver for this lun.
- */
- return (1);
- } else
- ahd->flags &= ~AHD_TQINFIFO_BLOCKED;
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_TQIN) != 0)
- printf("Incoming command from %d for %d:%d%s\n",
- initiator, target, lun,
- lstate == ahd->black_hole ? "(Black Holed)" : "");
-#endif
- SLIST_REMOVE_HEAD(&lstate->accept_tios, sim_links.sle);
-
- if (lstate == ahd->black_hole) {
- /* Fill in the wildcards */
- atio->ccb_h.target_id = target;
- atio->ccb_h.target_lun = lun;
- }
-
- /*
- * Package it up and send it off to
- * whomever has this lun enabled.
- */
- atio->sense_len = 0;
- atio->init_id = initiator;
- if (byte[0] != 0xFF) {
- /* Tag was included */
- atio->tag_action = *byte++;
- atio->tag_id = *byte++;
- atio->ccb_h.flags = CAM_TAG_ACTION_VALID;
- } else {
- atio->ccb_h.flags = 0;
- }
- byte++;
-
- /* Okay. Now determine the cdb size based on the command code */
- switch (*byte >> CMD_GROUP_CODE_SHIFT) {
- case 0:
- atio->cdb_len = 6;
- break;
- case 1:
- case 2:
- atio->cdb_len = 10;
- break;
- case 4:
- atio->cdb_len = 16;
- break;
- case 5:
- atio->cdb_len = 12;
- break;
- case 3:
- default:
- /* Only copy the opcode. */
- atio->cdb_len = 1;
- printf("Reserved or VU command code type encountered\n");
- break;
- }
-
- memcpy(atio->cdb_io.cdb_bytes, byte, atio->cdb_len);
-
- atio->ccb_h.status |= CAM_CDB_RECVD;
-
- if ((cmd->identify & MSG_IDENTIFY_DISCFLAG) == 0) {
- /*
- * We weren't allowed to disconnect.
- * We're hanging on the bus until a
- * continue target I/O comes in response
- * to this accept tio.
- */
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_TQIN) != 0)
- printf("Received Immediate Command %d:%d:%d - %p\n",
- initiator, target, lun, ahd->pending_device);
-#endif
- ahd->pending_device = lstate;
- ahd_freeze_ccb((union ccb *)atio);
- atio->ccb_h.flags |= CAM_DIS_DISCONNECT;
- }
- xpt_done((union ccb*)atio);
- return (0);
-}
-
-#endif
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)