patch-2.4.22 linux-2.4.22/drivers/scsi/aic79xx/aic79xx_osm.c
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- Lines: 5323
- Date:
1969-12-31 16:00:00.000000000 -0800
- Orig file:
linux-2.4.21/drivers/scsi/aic79xx/aic79xx_osm.c
- Orig date:
2003-06-13 07:51:36.000000000 -0700
diff -urN linux-2.4.21/drivers/scsi/aic79xx/aic79xx_osm.c linux-2.4.22/drivers/scsi/aic79xx/aic79xx_osm.c
@@ -1,5322 +0,0 @@
-/*
- * Adaptec AIC79xx device driver for Linux.
- *
- * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic79xx_osm.c#115 $
- *
- * --------------------------------------------------------------------------
- * Copyright (c) 1994-2000 Justin T. Gibbs.
- * Copyright (c) 1997-1999 Doug Ledford
- * 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.
- */
-
-/*
- * This is the only file where module.h should
- * embed module global version info.
- */
-#define AHD_MODVERSION_FILE
-
-#include "aic79xx_osm.h"
-#include "aic79xx_inline.h"
-#include <scsi/scsicam.h>
-
-/*
- * Include aiclib.c as part of our
- * "module dependencies are hard" work around.
- */
-#include "aiclib.c"
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
-#include <linux/init.h> /* __setup */
-#endif
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
-#include "sd.h" /* For geometry detection */
-#endif
-
-#include <linux/mm.h> /* For fetching system memory size */
-
-#define __KERNEL_SYSCALLS__
-
-#include <linux/unistd.h>
-static int errno;
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,0)
-/*
- * Lock protecting manipulation of the ahd softc list.
- */
-spinlock_t ahd_list_spinlock;
-#endif
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,3,0)
-struct proc_dir_entry proc_scsi_aic79xx = {
- PROC_SCSI_AIC79XX, 7, "aic79xx",
- S_IFDIR | S_IRUGO | S_IXUGO, 2,
- 0, 0, 0, NULL, NULL, NULL, NULL, NULL, NULL, NULL
-};
-#endif
-
-/*
- * Bucket size for counting good commands in between bad ones.
- */
-#define AHD_LINUX_ERR_THRESH 1000
-
-/*
- * Set this to the delay in seconds after SCSI bus reset.
- * Note, we honor this only for the initial bus reset.
- * The scsi error recovery code performs its own bus settle
- * delay handling for error recovery actions.
- */
-#ifdef CONFIG_AIC79XX_RESET_DELAY_MS
-#define AIC79XX_RESET_DELAY CONFIG_AIC79XX_RESET_DELAY_MS
-#else
-#define AIC79XX_RESET_DELAY 5000
-#endif
-
-/*
- * To change the default number of tagged transactions allowed per-device,
- * add a line to the lilo.conf file like:
- * append="aic79xx=verbose,tag_info:{{32,32,32,32},{32,32,32,32}}"
- * which will result in the first four devices on the first two
- * controllers being set to a tagged queue depth of 32.
- *
- * The tag_commands is an array of 16 to allow for wide and twin adapters.
- * Twin adapters will use indexes 0-7 for channel 0, and indexes 8-15
- * for channel 1.
- */
-typedef struct {
- uint16_t tag_commands[16]; /* Allow for wide/twin adapters. */
-} adapter_tag_info_t;
-
-/*
- * Modify this as you see fit for your system.
- *
- * 0 tagged queuing disabled
- * 1 <= n <= 253 n == max tags ever dispatched.
- *
- * The driver will throttle the number of commands dispatched to a
- * device if it returns queue full. For devices with a fixed maximum
- * queue depth, the driver will eventually determine this depth and
- * lock it in (a console message is printed to indicate that a lock
- * has occurred). On some devices, queue full is returned for a temporary
- * resource shortage. These devices will return queue full at varying
- * depths. The driver will throttle back when the queue fulls occur and
- * attempt to slowly increase the depth over time as the device recovers
- * from the resource shortage.
- *
- * In this example, the first line will disable tagged queueing for all
- * the devices on the first probed aic79xx adapter.
- *
- * The second line enables tagged queueing with 4 commands/LUN for IDs
- * (0, 2-11, 13-15), disables tagged queueing for ID 12, and tells the
- * driver to attempt to use up to 64 tags for ID 1.
- *
- * The third line is the same as the first line.
- *
- * The fourth line disables tagged queueing for devices 0 and 3. It
- * enables tagged queueing for the other IDs, with 16 commands/LUN
- * for IDs 1 and 4, 127 commands/LUN for ID 8, and 4 commands/LUN for
- * IDs 2, 5-7, and 9-15.
- */
-
-/*
- * NOTE: The below structure is for reference only, the actual structure
- * to modify in order to change things is just below this comment block.
-adapter_tag_info_t aic79xx_tag_info[] =
-{
- {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}},
- {{4, 64, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 4, 4, 4}},
- {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}},
- {{0, 16, 4, 0, 16, 4, 4, 4, 127, 4, 4, 4, 4, 4, 4, 4}}
-};
-*/
-
-#ifdef CONFIG_AIC79XX_CMDS_PER_DEVICE
-#define AIC79XX_CMDS_PER_DEVICE CONFIG_AIC79XX_CMDS_PER_DEVICE
-#else
-#define AIC79XX_CMDS_PER_DEVICE AHD_MAX_QUEUE
-#endif
-
-#define AIC79XX_CONFIGED_TAG_COMMANDS { \
- AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
- AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
- AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
- AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
- AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
- AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
- AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE, \
- AIC79XX_CMDS_PER_DEVICE, AIC79XX_CMDS_PER_DEVICE \
-}
-
-/*
- * By default, use the number of commands specified by
- * the users kernel configuration.
- */
-static adapter_tag_info_t aic79xx_tag_info[] =
-{
- {AIC79XX_CONFIGED_TAG_COMMANDS},
- {AIC79XX_CONFIGED_TAG_COMMANDS},
- {AIC79XX_CONFIGED_TAG_COMMANDS},
- {AIC79XX_CONFIGED_TAG_COMMANDS},
- {AIC79XX_CONFIGED_TAG_COMMANDS},
- {AIC79XX_CONFIGED_TAG_COMMANDS},
- {AIC79XX_CONFIGED_TAG_COMMANDS},
- {AIC79XX_CONFIGED_TAG_COMMANDS},
- {AIC79XX_CONFIGED_TAG_COMMANDS},
- {AIC79XX_CONFIGED_TAG_COMMANDS},
- {AIC79XX_CONFIGED_TAG_COMMANDS},
- {AIC79XX_CONFIGED_TAG_COMMANDS},
- {AIC79XX_CONFIGED_TAG_COMMANDS},
- {AIC79XX_CONFIGED_TAG_COMMANDS},
- {AIC79XX_CONFIGED_TAG_COMMANDS},
- {AIC79XX_CONFIGED_TAG_COMMANDS}
-};
-
-/*
- * By default, read streaming is disabled. In theory,
- * read streaming should enhance performance, but early
- * U320 drive firmware actually performs slower with
- * read streaming enabled.
- */
-#ifdef CONFIG_AIC79XX_ENABLE_RD_STRM
-#define AIC79XX_CONFIGED_RD_STRM 0xFFFF
-#else
-#define AIC79XX_CONFIGED_RD_STRM 0
-#endif
-
-static uint16_t aic79xx_rd_strm_info[] =
-{
- AIC79XX_CONFIGED_RD_STRM,
- AIC79XX_CONFIGED_RD_STRM,
- AIC79XX_CONFIGED_RD_STRM,
- AIC79XX_CONFIGED_RD_STRM,
- AIC79XX_CONFIGED_RD_STRM,
- AIC79XX_CONFIGED_RD_STRM,
- AIC79XX_CONFIGED_RD_STRM,
- AIC79XX_CONFIGED_RD_STRM,
- AIC79XX_CONFIGED_RD_STRM,
- AIC79XX_CONFIGED_RD_STRM,
- AIC79XX_CONFIGED_RD_STRM,
- AIC79XX_CONFIGED_RD_STRM,
- AIC79XX_CONFIGED_RD_STRM,
- AIC79XX_CONFIGED_RD_STRM,
- AIC79XX_CONFIGED_RD_STRM,
- AIC79XX_CONFIGED_RD_STRM
-};
-
-/*
- * DV option:
- *
- * positive value = DV Enabled
- * zero = DV Disabled
- * negative value = DV Default for adapter type/seeprom
- */
-#ifdef CONFIG_AIC79XX_DV_SETTING
-#define AIC79XX_CONFIGED_DV CONFIG_AIC79XX_DV_SETTING
-#else
-#define AIC79XX_CONFIGED_DV -1
-#endif
-
-static int8_t aic79xx_dv_settings[] =
-{
- AIC79XX_CONFIGED_DV,
- AIC79XX_CONFIGED_DV,
- AIC79XX_CONFIGED_DV,
- AIC79XX_CONFIGED_DV,
- AIC79XX_CONFIGED_DV,
- AIC79XX_CONFIGED_DV,
- AIC79XX_CONFIGED_DV,
- AIC79XX_CONFIGED_DV,
- AIC79XX_CONFIGED_DV,
- AIC79XX_CONFIGED_DV,
- AIC79XX_CONFIGED_DV,
- AIC79XX_CONFIGED_DV,
- AIC79XX_CONFIGED_DV,
- AIC79XX_CONFIGED_DV,
- AIC79XX_CONFIGED_DV,
- AIC79XX_CONFIGED_DV
-};
-
-/*
- * The I/O cell on the chip is very configurable in respect to its analog
- * characteristics. Set the defaults here; they can be overriden with
- * the proper insmod parameters.
- */
-struct ahd_linux_iocell_opts
-{
- uint8_t precomp;
- uint8_t slewrate;
- uint8_t amplitude;
-};
-#define AIC79XX_DEFAULT_PRECOMP 0xFF
-#define AIC79XX_DEFAULT_SLEWRATE 0xFF
-#define AIC79XX_DEFAULT_AMPLITUDE 0xFF
-#define AIC79XX_DEFAULT_IOOPTS \
-{ \
- AIC79XX_DEFAULT_PRECOMP, \
- AIC79XX_DEFAULT_SLEWRATE, \
- AIC79XX_DEFAULT_AMPLITUDE \
-}
-#define AIC79XX_PRECOMP_INDEX 0
-#define AIC79XX_SLEWRATE_INDEX 1
-#define AIC79XX_AMPLITUDE_INDEX 2
-static struct ahd_linux_iocell_opts aic79xx_iocell_info[] =
-{
- AIC79XX_DEFAULT_IOOPTS,
- AIC79XX_DEFAULT_IOOPTS,
- AIC79XX_DEFAULT_IOOPTS,
- AIC79XX_DEFAULT_IOOPTS,
- AIC79XX_DEFAULT_IOOPTS,
- AIC79XX_DEFAULT_IOOPTS,
- AIC79XX_DEFAULT_IOOPTS,
- AIC79XX_DEFAULT_IOOPTS,
- AIC79XX_DEFAULT_IOOPTS,
- AIC79XX_DEFAULT_IOOPTS,
- AIC79XX_DEFAULT_IOOPTS,
- AIC79XX_DEFAULT_IOOPTS,
- AIC79XX_DEFAULT_IOOPTS,
- AIC79XX_DEFAULT_IOOPTS,
- AIC79XX_DEFAULT_IOOPTS,
- AIC79XX_DEFAULT_IOOPTS
-};
-
-/*
- * There should be a specific return value for this in scsi.h, but
- * it seems that most drivers ignore it.
- */
-#define DID_UNDERFLOW DID_ERROR
-
-void
-ahd_print_path(struct ahd_softc *ahd, struct scb *scb)
-{
- printk("(scsi%d:%c:%d:%d): ",
- ahd->platform_data->host->host_no,
- scb != NULL ? SCB_GET_CHANNEL(ahd, scb) : 'X',
- scb != NULL ? SCB_GET_TARGET(ahd, scb) : -1,
- scb != NULL ? SCB_GET_LUN(scb) : -1);
-}
-
-/*
- * XXX - these options apply unilaterally to _all_ adapters
- * cards in the system. This should be fixed. Exceptions to this
- * rule are noted in the comments.
- */
-
-/*
- * Skip the scsi bus reset. Non 0 make us skip the reset at startup. This
- * has no effect on any later resets that might occur due to things like
- * SCSI bus timeouts.
- */
-static uint32_t aic79xx_no_reset;
-
-/*
- * Certain PCI motherboards will scan PCI devices from highest to lowest,
- * others scan from lowest to highest, and they tend to do all kinds of
- * strange things when they come into contact with PCI bridge chips. The
- * net result of all this is that the PCI card that is actually used to boot
- * the machine is very hard to detect. Most motherboards go from lowest
- * PCI slot number to highest, and the first SCSI controller found is the
- * one you boot from. The only exceptions to this are when a controller
- * has its BIOS disabled. So, we by default sort all of our SCSI controllers
- * from lowest PCI slot number to highest PCI slot number. We also force
- * all controllers with their BIOS disabled to the end of the list. This
- * works on *almost* all computers. Where it doesn't work, we have this
- * option. Setting this option to non-0 will reverse the order of the sort
- * to highest first, then lowest, but will still leave cards with their BIOS
- * disabled at the very end. That should fix everyone up unless there are
- * really strange cirumstances.
- */
-static int aic79xx_reverse_scan = 0;
-
-/*
- * Should we force EXTENDED translation on a controller.
- * 0 == Use whatever is in the SEEPROM or default to off
- * 1 == Use whatever is in the SEEPROM or default to on
- */
-static uint32_t aic79xx_extended = 0;
-
-/*
- * PCI bus parity checking of the Adaptec controllers. This is somewhat
- * dubious at best. To my knowledge, this option has never actually
- * solved a PCI parity problem, but on certain machines with broken PCI
- * chipset configurations, it can generate tons of false error messages.
- * It's included in the driver for completeness.
- * 0 = Shut off PCI parity check
- * -1 = Normal polarity pci parity checking
- * 1 = reverse polarity pci parity checking
- *
- * NOTE: you can't actually pass -1 on the lilo prompt. So, to set this
- * variable to -1 you would actually want to simply pass the variable
- * name without a number. That will invert the 0 which will result in
- * -1.
- */
-static int aic79xx_pci_parity = 0;
-
-/*
- * There are lots of broken chipsets in the world. Some of them will
- * violate the PCI spec when we issue byte sized memory writes to our
- * controller. I/O mapped register access, if allowed by the given
- * platform, will work in almost all cases.
- */
-int aic79xx_allow_memio = 1;
-
-/*
- * aic79xx_detect() has been run, so register all device arrivals
- * immediately with the system rather than deferring to the sorted
- * attachment performed by aic79xx_detect().
- */
-int aic79xx_detect_complete;
-
-/*
- * So that we can set how long each device is given as a selection timeout.
- * The table of values goes like this:
- * 0 - 256ms
- * 1 - 128ms
- * 2 - 64ms
- * 3 - 32ms
- * We default to 256ms because some older devices need a longer time
- * to respond to initial selection.
- */
-static int aic79xx_seltime = 0x00;
-
-/*
- * Certain devices do not perform any aging on commands. Should the
- * device be saturated by commands in one portion of the disk, it is
- * possible for transactions on far away sectors to never be serviced.
- * To handle these devices, we can periodically send an ordered tag to
- * force all outstanding transactions to be serviced prior to a new
- * transaction.
- */
-int aic79xx_periodic_otag;
-
-/*
- * Module information and settable options.
- */
-#ifdef MODULE
-static char *aic79xx = NULL;
-/*
- * Just in case someone uses commas to separate items on the insmod
- * command line, we define a dummy buffer here to avoid having insmod
- * write wild stuff into our code segment
- */
-static char dummy_buffer[60] = "Please don't trounce on me insmod!!\n";
-
-MODULE_AUTHOR("Maintainer: Justin T. Gibbs <gibbs@scsiguy.com>");
-MODULE_DESCRIPTION("Adaptec Aic77XX/78XX SCSI Host Bus Adapter driver");
-#ifdef MODULE_LICENSE
-MODULE_LICENSE("Dual BSD/GPL");
-#endif
-MODULE_PARM(aic79xx, "s");
-MODULE_PARM_DESC(aic79xx,
-"period delimited, options string.\n"
-" verbose Enable verbose/diagnostic logging\n"
-" allow_memio Allow device registers to be memory mapped\n"
-" debug Bitmask of debug values to enable\n"
-" no_reset Supress initial bus resets\n"
-" extended Enable extended geometry on all controllers\n"
-" periodic_otag Send an ordered tagged transaction\n"
-" periodically to prevent tag starvation.\n"
-" This may be required by some older disk\n"
-" or drives/RAID arrays.\n"
-" reverse_scan Sort PCI devices highest Bus/Slot to lowest\n"
-" tag_info:<tag_str> Set per-target tag depth\n"
-" global_tag_depth:<int> Global tag depth for all targets on all buses\n"
-" rd_strm:<rd_strm_masks> Set per-target read streaming setting.\n"
-" dv:<dv_settings> Set per-controller Domain Validation Setting.\n"
-" slewrate:<slewrate_list>Set the signal slew rate (0-15).\n"
-" precomp:<pcomp_list> Set the signal precompensation (0-7).\n"
-" amplitude:<int> Set the signal amplitude (0-7).\n"
-" seltime:<int> Selection Timeout:\n"
-" (0/256ms,1/128ms,2/64ms,3/32ms)\n"
-"\n"
-" Sample /etc/modules.conf line:\n"
-" Enable verbose logging\n"
-" Set tag depth on Controller 2/Target 2 to 10 tags\n"
-" Shorten the selection timeout to 128ms\n"
-"\n"
-" options aic79xx='\"verbose.tag_info:{{}.{}.{..10}}.seltime:1\"'\n"
-"\n"
-" Sample /etc/modules.conf line:\n"
-" Change Read Streaming for Controller's 2 and 3\n"
-"\n"
-" options aic79xx='\"rd_strm:{..0xFFF0.0xC0F0}\"'");
-#endif
-
-static void ahd_linux_handle_scsi_status(struct ahd_softc *,
- struct ahd_linux_device *,
- struct scb *);
-static void ahd_linux_queue_cmd_complete(struct ahd_softc *ahd,
- Scsi_Cmnd *cmd);
-static void ahd_linux_filter_inquiry(struct ahd_softc *ahd,
- struct ahd_devinfo *devinfo);
-static void ahd_linux_dev_timed_unfreeze(u_long arg);
-static void ahd_linux_sem_timeout(u_long arg);
-static void ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd);
-static void ahd_linux_thread_run_complete_queue(struct ahd_softc *ahd);
-static void ahd_linux_start_dv(struct ahd_softc *ahd);
-static void ahd_linux_dv_timeout(struct scsi_cmnd *cmd);
-static int ahd_linux_dv_thread(void *data);
-static void ahd_linux_dv_target(struct ahd_softc *ahd, u_int target);
-static void ahd_linux_dv_transition(struct ahd_softc *ahd,
- struct scsi_cmnd *cmd,
- struct ahd_devinfo *devinfo,
- struct ahd_linux_target *targ);
-static void ahd_linux_dv_fill_cmd(struct ahd_softc *ahd,
- struct scsi_cmnd *cmd,
- struct ahd_devinfo *devinfo);
-static void ahd_linux_dv_inq(struct ahd_softc *ahd,
- struct scsi_cmnd *cmd,
- struct ahd_devinfo *devinfo,
- struct ahd_linux_target *targ,
- u_int request_length);
-static void ahd_linux_dv_tur(struct ahd_softc *ahd,
- struct scsi_cmnd *cmd,
- struct ahd_devinfo *devinfo);
-static void ahd_linux_dv_rebd(struct ahd_softc *ahd,
- struct scsi_cmnd *cmd,
- struct ahd_devinfo *devinfo,
- struct ahd_linux_target *targ);
-static void ahd_linux_dv_web(struct ahd_softc *ahd,
- struct scsi_cmnd *cmd,
- struct ahd_devinfo *devinfo,
- struct ahd_linux_target *targ);
-static void ahd_linux_dv_reb(struct ahd_softc *ahd,
- struct scsi_cmnd *cmd,
- struct ahd_devinfo *devinfo,
- struct ahd_linux_target *targ);
-static void ahd_linux_dv_su(struct ahd_softc *ahd,
- struct scsi_cmnd *cmd,
- struct ahd_devinfo *devinfo,
- struct ahd_linux_target *targ);
-static __inline int
- ahd_linux_dv_fallback(struct ahd_softc *ahd,
- struct ahd_devinfo *devinfo);
-static int ahd_linux_fallback(struct ahd_softc *ahd,
- struct ahd_devinfo *devinfo);
-static __inline int ahd_linux_dv_fallback(struct ahd_softc *ahd,
- struct ahd_devinfo *devinfo);
-static void ahd_linux_dv_complete(Scsi_Cmnd *cmd);
-static void ahd_linux_generate_dv_pattern(struct ahd_linux_target *targ);
-static u_int ahd_linux_user_tagdepth(struct ahd_softc *ahd,
- struct ahd_devinfo *devinfo);
-static u_int ahd_linux_user_dv_setting(struct ahd_softc *ahd);
-static void ahd_linux_device_queue_depth(struct ahd_softc *ahd,
- struct ahd_linux_device *dev);
-static struct ahd_linux_target* ahd_linux_alloc_target(struct ahd_softc*,
- u_int, u_int);
-static void ahd_linux_free_target(struct ahd_softc*,
- struct ahd_linux_target*);
-static struct ahd_linux_device* ahd_linux_alloc_device(struct ahd_softc*,
- struct ahd_linux_target*,
- u_int);
-static void ahd_linux_free_device(struct ahd_softc*,
- struct ahd_linux_device*);
-static void ahd_linux_run_device_queue(struct ahd_softc*,
- struct ahd_linux_device*);
-static void ahd_linux_setup_tag_info(char *p, char *end, char *s);
-static void ahd_linux_setup_tag_info_global(char *p);
-static void ahd_linux_setup_rd_strm_info(char *p, char *end, char *s);
-static void ahd_linux_setup_dv(char *p, char *end, char *s);
-static void ahd_linux_setup_iocell_info(char *p, char *end, char *s, int index);
-static int ahd_linux_next_unit(void);
-static void ahd_runq_tasklet(unsigned long data);
-static int ahd_linux_halt(struct notifier_block *nb, u_long event, void *buf);
-static int aic79xx_setup(char *c);
-
-/****************************** Inlines ***************************************/
-static __inline void ahd_schedule_completeq(struct ahd_softc *ahd,
- struct ahd_cmd *acmd);
-static __inline void ahd_schedule_runq(struct ahd_softc *ahd);
-static __inline void ahd_setup_runq_tasklet(struct ahd_softc *ahd);
-static __inline void ahd_teardown_runq_tasklet(struct ahd_softc *ahd);
-static __inline struct ahd_linux_device*
- ahd_linux_get_device(struct ahd_softc *ahd, u_int channel,
- u_int target, u_int lun, int alloc);
-static struct ahd_cmd *ahd_linux_run_complete_queue(struct ahd_softc *ahd,
- struct ahd_cmd *acmd);
-static __inline void ahd_linux_check_device_queue(struct ahd_softc *ahd,
- struct ahd_linux_device *dev);
-static __inline struct ahd_linux_device *
- ahd_linux_next_device_to_run(struct ahd_softc *ahd);
-static __inline void ahd_linux_run_device_queues(struct ahd_softc *ahd);
-static __inline void ahd_linux_unmap_scb(struct ahd_softc*, struct scb*);
-
-static __inline int ahd_linux_map_seg(struct ahd_softc *ahd, struct scb *scb,
- struct ahd_dma_seg *sg,
- bus_addr_t addr, bus_size_t len);
-
-static __inline void
-ahd_schedule_completeq(struct ahd_softc *ahd, struct ahd_cmd *acmd)
-{
- while (acmd != NULL) {
- struct ahd_completeq *completeq;
- struct ahd_cmd *list_cmd;
- struct ahd_cmd *next_cmd;
-
- next_cmd = TAILQ_NEXT(acmd, acmd_links.tqe);
- completeq = &ahd->platform_data->completeq;
- list_cmd = TAILQ_FIRST(completeq);
- while (list_cmd != NULL
- && acmd_scsi_cmd(list_cmd).serial_number
- < acmd_scsi_cmd(acmd).serial_number)
- list_cmd = TAILQ_NEXT(list_cmd, acmd_links.tqe);
- if (list_cmd != NULL)
- TAILQ_INSERT_BEFORE(list_cmd, acmd, acmd_links.tqe);
- else
- TAILQ_INSERT_TAIL(completeq, acmd, acmd_links.tqe);
- acmd = next_cmd;
- }
- if ((ahd->platform_data->flags & AHD_RUN_CMPLT_Q_TIMER) == 0) {
- ahd->platform_data->flags |= AHD_RUN_CMPLT_Q_TIMER;
- ahd->platform_data->completeq_timer.expires = jiffies;
- add_timer(&ahd->platform_data->completeq_timer);
- }
-}
-
-static __inline void
-ahd_schedule_runq(struct ahd_softc *ahd)
-{
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
- tasklet_schedule(&ahd->platform_data->runq_tasklet);
-#else
- /*
- * Tasklets are not available, so run inline.
- */
- ahd_runq_tasklet((unsigned long)ahd);
-#endif
-}
-
-static __inline
-void ahd_setup_runq_tasklet(struct ahd_softc *ahd)
-{
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
- tasklet_init(&ahd->platform_data->runq_tasklet, ahd_runq_tasklet,
- (unsigned long)ahd);
-#endif
-}
-
-static __inline void
-ahd_teardown_runq_tasklet(struct ahd_softc *ahd)
-{
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
- tasklet_kill(&ahd->platform_data->runq_tasklet);
-#endif
-}
-
-static __inline struct ahd_linux_device*
-ahd_linux_get_device(struct ahd_softc *ahd, u_int channel, u_int target,
- u_int lun, int alloc)
-{
- struct ahd_linux_target *targ;
- struct ahd_linux_device *dev;
- u_int target_offset;
-
- target_offset = target;
- if (channel != 0)
- target_offset += 8;
- targ = ahd->platform_data->targets[target_offset];
- if (targ == NULL) {
- if (alloc != 0) {
- targ = ahd_linux_alloc_target(ahd, channel, target);
- if (targ == NULL)
- return (NULL);
- } else
- return (NULL);
- }
- dev = targ->devices[lun];
- if (dev == NULL && alloc != 0)
- dev = ahd_linux_alloc_device(ahd, targ, lun);
- return (dev);
-}
-
-#define AHD_LINUX_MAX_RETURNED_ERRORS 4
-static struct ahd_cmd *
-ahd_linux_run_complete_queue(struct ahd_softc *ahd, struct ahd_cmd *acmd)
-{
- u_long done_flags;
- int with_errors;
-
- ahd_done_lock(ahd, &done_flags);
- with_errors = 0;
- while (acmd != NULL) {
- Scsi_Cmnd *cmd;
-
- cmd = &acmd_scsi_cmd(acmd);
- acmd = TAILQ_NEXT(acmd, acmd_links.tqe);
- cmd->host_scribble = NULL;
- if (ahd_cmd_get_transaction_status(cmd) != DID_OK
- || (cmd->result & 0xFF) != SCSI_STATUS_OK)
- with_errors++;
-
- cmd->scsi_done(cmd);
-
- if (with_errors > AHD_LINUX_MAX_RETURNED_ERRORS) {
- /*
- * Linux uses stack recursion to requeue
- * commands that need to be retried. Avoid
- * blowing out the stack by "spoon feeding"
- * commands that completed with error back
- * the operating system in case they are going
- * to be retried. "ick"
- */
- break;
- }
- }
- ahd_done_unlock(ahd, &done_flags);
- return (acmd);
-}
-
-static __inline void
-ahd_linux_check_device_queue(struct ahd_softc *ahd,
- struct ahd_linux_device *dev)
-{
- if ((dev->flags & AHD_DEV_FREEZE_TIL_EMPTY) != 0
- && dev->active == 0) {
- dev->flags &= ~AHD_DEV_FREEZE_TIL_EMPTY;
- dev->qfrozen--;
- }
-
- if (TAILQ_FIRST(&dev->busyq) == NULL
- || dev->openings == 0 || dev->qfrozen != 0)
- return;
-
- ahd_linux_run_device_queue(ahd, dev);
-}
-
-static __inline struct ahd_linux_device *
-ahd_linux_next_device_to_run(struct ahd_softc *ahd)
-{
-
- if ((ahd->flags & AHD_RESOURCE_SHORTAGE) != 0
- || (ahd->platform_data->qfrozen != 0
- && AHD_DV_SIMQ_FROZEN(ahd) == 0))
- return (NULL);
- return (TAILQ_FIRST(&ahd->platform_data->device_runq));
-}
-
-static __inline void
-ahd_linux_run_device_queues(struct ahd_softc *ahd)
-{
- struct ahd_linux_device *dev;
-
- while ((dev = ahd_linux_next_device_to_run(ahd)) != NULL) {
- TAILQ_REMOVE(&ahd->platform_data->device_runq, dev, links);
- dev->flags &= ~AHD_DEV_ON_RUN_LIST;
- ahd_linux_check_device_queue(ahd, dev);
- }
-}
-
-static __inline void
-ahd_linux_unmap_scb(struct ahd_softc *ahd, struct scb *scb)
-{
- Scsi_Cmnd *cmd;
- int direction;
-
- cmd = scb->io_ctx;
- direction = scsi_to_pci_dma_dir(cmd->sc_data_direction);
- ahd_sync_sglist(ahd, scb, BUS_DMASYNC_POSTWRITE);
- if (cmd->use_sg != 0) {
- struct scatterlist *sg;
-
- sg = (struct scatterlist *)cmd->request_buffer;
- pci_unmap_sg(ahd->dev_softc, sg, cmd->use_sg, direction);
- } else if (cmd->request_bufflen != 0) {
- pci_unmap_single(ahd->dev_softc,
- scb->platform_data->buf_busaddr,
- cmd->request_bufflen, direction);
- }
-}
-
-static __inline int
-ahd_linux_map_seg(struct ahd_softc *ahd, struct scb *scb,
- struct ahd_dma_seg *sg, bus_addr_t addr, bus_size_t len)
-{
- int consumed;
-
- if ((scb->sg_count + 1) > AHD_NSEG)
- panic("Too few segs for dma mapping. "
- "Increase AHD_NSEG\n");
-
- consumed = 1;
- sg->addr = ahd_htole32(addr & 0xFFFFFFFF);
- scb->platform_data->xfer_len += len;
- if (sizeof(bus_addr_t) > 4
- && (ahd->flags & AHD_39BIT_ADDRESSING) != 0) {
- /*
- * Due to DAC restrictions, we can't
- * cross a 4GB boundary.
- */
- if ((addr ^ (addr + len - 1)) & ~0xFFFFFFFF) {
- struct ahd_dma_seg *next_sg;
- uint32_t next_len;
-
- printf("Crossed Seg\n");
- if ((scb->sg_count + 2) > AHD_NSEG)
- panic("Too few segs for dma mapping. "
- "Increase AHD_NSEG\n");
-
- consumed++;
- next_sg = sg + 1;
- next_sg->addr = 0;
- next_len = 0x100000000 - (addr & 0xFFFFFFFF);
- len -= next_len;
- next_len |= ((addr >> 8) + 0x1000000) & 0x7F000000;
- next_sg->len = ahd_htole32(next_len);
- }
- len |= (addr >> 8) & 0x7F000000;
- }
- sg->len = ahd_htole32(len);
- return (consumed);
-}
-
-/******************************** Macros **************************************/
-#define BUILD_SCSIID(ahd, cmd) \
- ((((cmd)->device->id << TID_SHIFT) & TID) | (ahd)->our_id)
-
-/************************ Host template entry points *************************/
-static int ahd_linux_detect(Scsi_Host_Template *);
-static int ahd_linux_release(struct Scsi_Host *);
-static const char *ahd_linux_info(struct Scsi_Host *);
-static int ahd_linux_queue(Scsi_Cmnd *, void (*)(Scsi_Cmnd *));
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
-static int ahd_linux_slave_alloc(Scsi_Device *);
-static int ahd_linux_slave_configure(Scsi_Device *);
-static void ahd_linux_slave_destroy(Scsi_Device *);
-static int ahd_linux_biosparam(struct scsi_device*,
- struct block_device*, sector_t, int[]);
-#else
-static void ahd_linux_select_queue_depth(struct Scsi_Host *host,
- Scsi_Device *scsi_devs);
-static int ahd_linux_biosparam(Disk *, kdev_t, int[]);
-#endif
-static int ahd_linux_bus_reset(Scsi_Cmnd *);
-static int ahd_linux_dev_reset(Scsi_Cmnd *);
-static int ahd_linux_abort(Scsi_Cmnd *);
-
-/*
- * Try to detect an Adaptec 79XX controller.
- */
-static int
-ahd_linux_detect(Scsi_Host_Template *template)
-{
- struct ahd_softc *ahd;
- int found;
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- /*
- * It is a bug that the upper layer takes
- * this lock just prior to calling us.
- */
- spin_unlock_irq(&io_request_lock);
-#endif
-
- /*
- * Sanity checking of Linux SCSI data structures so
- * that some of our hacks^H^H^H^H^Hassumptions aren't
- * violated.
- */
- if (offsetof(struct ahd_cmd_internal, end)
- > offsetof(struct scsi_cmnd, host_scribble)) {
- printf("ahd_linux_detect: SCSI data structures changed.\n");
- printf("ahd_linux_detect: Unable to attach\n");
- return (0);
- }
-#ifdef MODULE
- /*
- * If we've been passed any parameters, process them now.
- */
- if (aic79xx)
- aic79xx_setup(aic79xx);
- if (dummy_buffer[0] != 'P')
- printk(KERN_WARNING
-"aic79xx: Please read the file /usr/src/linux/drivers/scsi/README.aic79xx\n"
-"aic79xx: to see the proper way to specify options to the aic79xx module\n"
-"aic79xx: Specifically, don't use any commas when passing arguments to\n"
-"aic79xx: insmod or else it might trash certain memory areas.\n");
-#endif
-
-#if LINUX_VERSION_CODE > KERNEL_VERSION(2,3,0)
- template->proc_name = "aic79xx";
-#else
- template->proc_dir = &proc_scsi_aic79xx;
-#endif
-
- /*
- * Initialize our softc list lock prior to
- * probing for any adapters.
- */
- ahd_list_lockinit();
-
-#ifdef CONFIG_PCI
- ahd_linux_pci_probe(template);
-#endif
-
- /*
- * Register with the SCSI layer all
- * controllers we've found.
- */
- found = 0;
- TAILQ_FOREACH(ahd, &ahd_tailq, links) {
-
- if (ahd_linux_register_host(ahd, template) == 0)
- found++;
- }
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- spin_lock_irq(&io_request_lock);
-#endif
- aic79xx_detect_complete++;
- return (found);
-}
-
-/*
- * Free the passed in Scsi_Host memory structures prior to unloading the
- * module.
- */
-static int
-ahd_linux_release(struct Scsi_Host * host)
-{
- struct ahd_softc *ahd;
- u_long l;
-
- ahd_list_lock(&l);
- if (host != NULL) {
-
- /*
- * We should be able to just perform
- * the free directly, but check our
- * list for extra sanity.
- */
- ahd = ahd_find_softc(*(struct ahd_softc **)host->hostdata);
- if (ahd != NULL) {
- u_long s;
-
- ahd_lock(ahd, &s);
- ahd_intr_enable(ahd, FALSE);
- ahd_unlock(ahd, &s);
- ahd_free(ahd);
- }
- }
- ahd_list_unlock(&l);
- return (0);
-}
-
-/*
- * Return a string describing the driver.
- */
-static const char *
-ahd_linux_info(struct Scsi_Host *host)
-{
- static char buffer[512];
- char ahd_info[256];
- char *bp;
- struct ahd_softc *ahd;
-
- bp = &buffer[0];
- ahd = *(struct ahd_softc **)host->hostdata;
- memset(bp, 0, sizeof(buffer));
- strcpy(bp, "Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev ");
- strcat(bp, AIC79XX_DRIVER_VERSION);
- strcat(bp, "\n");
- strcat(bp, " <");
- strcat(bp, ahd->description);
- strcat(bp, ">\n");
- strcat(bp, " ");
- ahd_controller_info(ahd, ahd_info);
- strcat(bp, ahd_info);
- strcat(bp, "\n");
-
- return (bp);
-}
-
-/*
- * Queue an SCB to the controller.
- */
-static int
-ahd_linux_queue(Scsi_Cmnd * cmd, void (*scsi_done) (Scsi_Cmnd *))
-{
- struct ahd_softc *ahd;
- struct ahd_linux_device *dev;
- u_long flags;
-
- ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
-
- /*
- * Save the callback on completion function.
- */
- cmd->scsi_done = scsi_done;
-
- ahd_midlayer_entrypoint_lock(ahd, &flags);
-
- /*
- * Close the race of a command that was in the process of
- * being queued to us just as our simq was frozen. Let
- * DV commands through so long as we are only frozen to
- * perform DV.
- */
- if (ahd->platform_data->qfrozen != 0
- && AHD_DV_CMD(cmd) == 0) {
-
- ahd_cmd_set_transaction_status(cmd, CAM_REQUEUE_REQ);
- ahd_linux_queue_cmd_complete(ahd, cmd);
- ahd_schedule_completeq(ahd, NULL);
- ahd_midlayer_entrypoint_unlock(ahd, &flags);
- return (0);
- }
- dev = ahd_linux_get_device(ahd, cmd->device->channel,
- cmd->device->id, cmd->device->lun,
- /*alloc*/TRUE);
- if (dev == NULL) {
- ahd_midlayer_entrypoint_unlock(ahd, &flags);
- printf("aic79xx_linux_queue: Unable to allocate device!\n");
- return (-ENOMEM);
- }
- if (cmd->cmd_len > MAX_CDB_LEN)
- return (-EINVAL);
- cmd->result = CAM_REQ_INPROG << 16;
- TAILQ_INSERT_TAIL(&dev->busyq, (struct ahd_cmd *)cmd, acmd_links.tqe);
- if ((dev->flags & AHD_DEV_ON_RUN_LIST) == 0) {
- TAILQ_INSERT_TAIL(&ahd->platform_data->device_runq, dev, links);
- dev->flags |= AHD_DEV_ON_RUN_LIST;
- ahd_linux_run_device_queues(ahd);
- }
- ahd_midlayer_entrypoint_unlock(ahd, &flags);
- return (0);
-}
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
-static int
-ahd_linux_slave_alloc(Scsi_Device *device)
-{
- struct ahd_softc *ahd;
-
- ahd = *((struct ahd_softc **)device->host->hostdata);
- if (bootverbose)
- printf("%s: Slave Alloc %d\n", ahd_name(ahd), device->id);
- return (0);
-}
-
-static int
-ahd_linux_slave_configure(Scsi_Device *device)
-{
- struct ahd_softc *ahd;
- struct ahd_linux_device *dev;
- u_long flags;
-
- ahd = *((struct ahd_softc **)device->host->hostdata);
- if (bootverbose)
- printf("%s: Slave Configure %d\n", ahd_name(ahd), device->id);
- ahd_midlayer_entrypoint_lock(ahd, &flags);
- /*
- * Since Linux has attached to the device, configure
- * it so we don't free and allocate the device
- * structure on every command.
- */
- dev = ahd_linux_get_device(ahd, device->channel,
- device->id, device->lun,
- /*alloc*/TRUE);
- if (dev != NULL) {
- dev->flags &= ~AHD_DEV_UNCONFIGURED;
- dev->flags |= AHD_DEV_SLAVE_CONFIGURED;
- dev->scsi_device = device;
- ahd_linux_device_queue_depth(ahd, dev);
- }
- ahd_midlayer_entrypoint_unlock(ahd, &flags);
- return (0);
-}
-
-static void
-ahd_linux_slave_destroy(Scsi_Device *device)
-{
- struct ahd_softc *ahd;
- struct ahd_linux_device *dev;
- u_long flags;
-
- ahd = *((struct ahd_softc **)device->host->hostdata);
- if (bootverbose)
- printf("%s: Slave Destroy %d\n", ahd_name(ahd), device->id);
- ahd_midlayer_entrypoint_lock(ahd, &flags);
- dev = ahd_linux_get_device(ahd, device->channel,
- device->id, device->lun,
- /*alloc*/FALSE);
-
- /*
- * Filter out "silly" deletions of real devices by only
- * deleting devices that have had slave_configure()
- * called on them. All other devices that have not
- * been configured will automatically be deleted by
- * the refcounting process.
- */
- if (dev != NULL
- && (dev->flags & AHD_DEV_SLAVE_CONFIGURED) != 0) {
- dev->flags |= AHD_DEV_UNCONFIGURED;
- if (TAILQ_EMPTY(&dev->busyq)
- && dev->active == 0)
- ahd_linux_free_device(ahd, dev);
- }
- ahd_midlayer_entrypoint_unlock(ahd, &flags);
-}
-#else
-/*
- * Sets the queue depth for each SCSI device hanging
- * off the input host adapter.
- */
-static void
-ahd_linux_select_queue_depth(struct Scsi_Host * host,
- Scsi_Device * scsi_devs)
-{
- Scsi_Device *device;
- struct ahd_softc *ahd;
- u_long flags;
- int scbnum;
-
- ahd = *((struct ahd_softc **)host->hostdata);
- ahd_midlayer_entrypoint_lock(ahd, &flags);
- scbnum = 0;
- for (device = scsi_devs; device != NULL; device = device->next) {
-
- if (device->host == host) {
- struct ahd_linux_device *dev;
-
- /*
- * Since Linux has attached to the device, configure
- * it so we don't free and allocate the device
- * structure on every command.
- */
- dev = ahd_linux_get_device(ahd, device->channel,
- device->id, device->lun,
- /*alloc*/TRUE);
- if (dev != NULL) {
- dev->flags &= ~AHD_DEV_UNCONFIGURED;
- dev->scsi_device = device;
- ahd_linux_device_queue_depth(ahd, dev);
- device->queue_depth = dev->openings
- + dev->active;
- if ((dev->flags & (AHD_DEV_Q_BASIC
- | AHD_DEV_Q_TAGGED)) == 0) {
- /*
- * We allow the OS to queue 2 untagged
- * transactions to us at any time even
- * though we can only execute them
- * serially on the controller/device.
- * This should remove some latency.
- */
- device->queue_depth = 2;
- }
- }
- }
- }
- ahd_midlayer_entrypoint_unlock(ahd, &flags);
-}
-#endif
-
-/*
- * Return the disk geometry for the given SCSI device.
- */
-static int
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
-ahd_linux_biosparam(struct scsi_device *sdev, struct block_device *bdev,
- sector_t capacity, int geom[])
-{
- uint8_t *bh;
-#else
-ahd_linux_biosparam(Disk *disk, kdev_t dev, int geom[])
-{
- struct scsi_device *sdev = disk->device;
- u_long capacity = disk->capacity;
- struct buffer_head *bh;
-#endif
- int heads;
- int sectors;
- int cylinders;
- int ret;
- int extended;
- struct ahd_softc *ahd;
-
- ahd = *((struct ahd_softc **)sdev->host->hostdata);
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
- bh = scsi_bios_ptable(bdev);
-#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,17)
- bh = bread(MKDEV(MAJOR(dev), MINOR(dev) & ~0xf), 0, block_size(dev));
-#else
- bh = bread(MKDEV(MAJOR(dev), MINOR(dev) & ~0xf), 0, 1024);
-#endif
-
- if (bh) {
- ret = scsi_partsize(bh, capacity,
- &geom[2], &geom[0], &geom[1]);
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
- kfree(bh);
-#else
- brelse(bh);
-#endif
- if (ret != -1)
- return (ret);
- }
- heads = 64;
- sectors = 32;
- cylinders = aic_sector_div(capacity, heads, sectors);
-
- if (aic79xx_extended != 0)
- extended = 1;
- else
- extended = (ahd->flags & AHD_EXTENDED_TRANS_A) != 0;
- if (extended && cylinders >= 1024) {
- heads = 255;
- sectors = 63;
- cylinders = aic_sector_div(capacity, heads, sectors);
- }
- geom[0] = heads;
- geom[1] = sectors;
- geom[2] = cylinders;
- return (0);
-}
-
-/*
- * Abort the current SCSI command(s).
- */
-static int
-ahd_linux_abort(Scsi_Cmnd *cmd)
-{
- struct ahd_softc *ahd;
- struct ahd_cmd *acmd;
- struct ahd_cmd *list_acmd;
- struct ahd_linux_device *dev;
- struct scb *pending_scb;
- u_long s;
- u_int saved_scbptr;
- u_int active_scbptr;
- u_int last_phase;
- int retval;
- int paused;
- int wait;
- int disconnected;
- ahd_mode_state saved_modes;
-
- pending_scb = NULL;
- paused = FALSE;
- wait = FALSE;
- ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
- acmd = (struct ahd_cmd *)cmd;
-
- printf("%s:%d:%d:%d: Attempting to abort cmd %p\n",
- ahd_name(ahd), cmd->device->channel, cmd->device->id,
- cmd->device->lun, cmd);
-
- /*
- * In all versions of Linux, we have to work around
- * a major flaw in how the mid-layer is locked down
- * if we are to sleep successfully in our error handler
- * while allowing our interrupt handler to run. Since
- * the midlayer acquires either the io_request_lock or
- * our lock prior to calling us, we must use the
- * spin_unlock_irq() method for unlocking our lock.
- * This will force interrupts to be enabled on the
- * current CPU. Since the EH thread should not have
- * been running with CPU interrupts disabled other than
- * by acquiring either the io_request_lock or our own
- * lock, this *should* be safe.
- */
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- spin_unlock_irq(&io_request_lock);
-#endif
- ahd_midlayer_entrypoint_lock(ahd, &s);
-
- /*
- * First determine if we currently own this command.
- * Start by searching the device queue. If not found
- * there, check the pending_scb list. If not found
- * at all, and the system wanted us to just abort the
- * command return success.
- */
- dev = ahd_linux_get_device(ahd, cmd->device->channel,
- cmd->device->id, cmd->device->lun,
- /*alloc*/FALSE);
-
- if (dev == NULL) {
- /*
- * No target device for this command exists,
- * so we must not still own the command.
- */
- printf("%s:%d:%d:%d: Is not an active device\n",
- ahd_name(ahd), cmd->device->channel, cmd->device->id,
- cmd->device->lun);
- retval = SUCCESS;
- goto no_cmd;
- }
-
- TAILQ_FOREACH(list_acmd, &dev->busyq, acmd_links.tqe) {
- if (list_acmd == acmd)
- break;
- }
-
- if (list_acmd != NULL) {
- printf("%s:%d:%d:%d: Command found on device queue\n",
- ahd_name(ahd), cmd->device->channel, cmd->device->id,
- cmd->device->lun);
- TAILQ_REMOVE(&dev->busyq, list_acmd, acmd_links.tqe);
- cmd->result = DID_ABORT << 16;
- ahd_linux_queue_cmd_complete(ahd, cmd);
- retval = SUCCESS;
- goto done;
- }
-
- /*
- * See if we can find a matching cmd in the pending list.
- */
- LIST_FOREACH(pending_scb, &ahd->pending_scbs, pending_links) {
- if (pending_scb->io_ctx == cmd)
- break;
- }
-
- if (pending_scb == NULL) {
- printf("%s:%d:%d:%d: Command not found\n",
- ahd_name(ahd), cmd->device->channel, cmd->device->id,
- cmd->device->lun);
- goto no_cmd;
- }
-
- if ((pending_scb->flags & SCB_RECOVERY_SCB) != 0) {
- /*
- * We can't queue two recovery actions using the same SCB
- */
- retval = FAILED;
- goto done;
- }
-
- /*
- * Ensure that the card doesn't do anything
- * behind our back. Also make sure that we
- * didn't "just" miss an interrupt that would
- * affect this cmd.
- */
- ahd_pause_and_flushwork(ahd);
- paused = TRUE;
-
- if ((pending_scb->flags & SCB_ACTIVE) == 0) {
- printf("%s:%d:%d:%d: Command already completed\n",
- ahd_name(ahd), cmd->device->channel, cmd->device->id,
- cmd->device->lun);
- goto no_cmd;
- }
-
- ahd_dump_card_state(ahd);
-
- disconnected = TRUE;
- if (ahd_search_qinfifo(ahd, cmd->device->id, cmd->device->channel + 'A',
- cmd->device->lun, pending_scb->hscb->tag,
- ROLE_INITIATOR, CAM_REQ_ABORTED,
- SEARCH_COMPLETE) > 0) {
- printf("%s:%d:%d:%d: Cmd aborted from QINFIFO\n",
- ahd_name(ahd), cmd->device->channel, cmd->device->id,
- cmd->device->lun);
- retval = SUCCESS;
- goto done;
- }
-
- saved_modes = ahd_save_modes(ahd);
- ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
- last_phase = ahd_inb(ahd, LASTPHASE);
- saved_scbptr = ahd_get_scbptr(ahd);
- active_scbptr = saved_scbptr;
- if (disconnected && (ahd_inb(ahd, SEQ_FLAGS) & NOT_IDENTIFIED) == 0) {
- struct scb *bus_scb;
-
- bus_scb = ahd_lookup_scb(ahd, active_scbptr);
- if (bus_scb == pending_scb)
- disconnected = FALSE;
- }
-
- /*
- * At this point, pending_scb is the scb associated with the
- * passed in command. That command is currently active on the
- * bus or is in the disconnected state.
- */
- if (last_phase != P_BUSFREE
- && pending_scb->hscb->tag == active_scbptr) {
-
- /*
- * We're active on the bus, so assert ATN
- * and hope that the target responds.
- */
- pending_scb = ahd_lookup_scb(ahd, active_scbptr);
- pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT;
- ahd_outb(ahd, MSG_OUT, HOST_MSG);
- ahd_outb(ahd, SCSISIGO, last_phase|ATNO);
- printf("%s:%d:%d:%d: Device is active, asserting ATN\n",
- ahd_name(ahd), cmd->device->channel,
- cmd->device->id, cmd->device->lun);
- wait = TRUE;
- } else if (disconnected) {
-
- /*
- * Actually re-queue this SCB in an attempt
- * to select the device before it reconnects.
- */
- pending_scb->flags |= SCB_RECOVERY_SCB|SCB_ABORT;
- ahd_set_scbptr(ahd, pending_scb->hscb->tag);
- pending_scb->hscb->cdb_len = 0;
- pending_scb->hscb->task_attribute = 0;
- pending_scb->hscb->task_management = SIU_TASKMGMT_ABORT_TASK;
-
- if ((pending_scb->flags & SCB_PACKETIZED) != 0) {
- /*
- * Mark the SCB has having an outstanding
- * task management function. Should the command
- * complete normally before the task management
- * function can be sent, the host will be notified
- * to abort our requeued SCB.
- */
- ahd_outb(ahd, SCB_TASK_MANAGEMENT,
- pending_scb->hscb->task_management);
- } else {
- /*
- * If non-packetized, set the MK_MESSAGE control
- * bit indicating that we desire to send a message.
- * We also set the disconnected flag since there is
- * no guarantee that our SCB control byte matches
- * the version on the card. We don't want the
- * sequencer to abort the command thinking an
- * unsolicited reselection occurred.
- */
- pending_scb->hscb->control |= MK_MESSAGE|DISCONNECTED;
-
- /*
- * The sequencer will never re-reference the
- * in-core SCB. To make sure we are notified
- * during reslection, set the MK_MESSAGE flag in
- * the card's copy of the SCB.
- */
- ahd_outb(ahd, SCB_CONTROL,
- ahd_inb(ahd, SCB_CONTROL)|MK_MESSAGE);
- }
-
- /*
- * Clear out any entries in the QINFIFO first
- * so we are the next SCB for this target
- * to run.
- */
- ahd_search_qinfifo(ahd, cmd->device->id,
- cmd->device->channel + 'A', cmd->device->lun,
- SCB_LIST_NULL, ROLE_INITIATOR,
- CAM_REQUEUE_REQ, SEARCH_COMPLETE);
- ahd_qinfifo_requeue_tail(ahd, pending_scb);
- ahd_set_scbptr(ahd, saved_scbptr);
- ahd_print_path(ahd, pending_scb);
- printf("Device is disconnected, re-queuing SCB\n");
- wait = TRUE;
- } else {
- printf("%s:%d:%d:%d: Unable to deliver message\n",
- ahd_name(ahd), cmd->device->channel,
- cmd->device->id, cmd->device->lun);
- retval = FAILED;
- goto done;
- }
-
-no_cmd:
- /*
- * Our assumption is that if we don't have the command, no
- * recovery action was required, so we return success. Again,
- * the semantics of the mid-layer recovery engine are not
- * well defined, so this may change in time.
- */
- retval = SUCCESS;
-done:
- if (paused)
- ahd_unpause(ahd);
- if (wait) {
- struct timer_list timer;
- int ret;
-
- ahd->platform_data->flags |= AHD_UP_EH_SEMAPHORE;
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- ahd_unlock(ahd, &s);
-#else
- spin_unlock_irq(ahd->platform_data->host->host_lock);
-#endif
- init_timer(&timer);
- timer.data = (u_long)ahd;
- timer.expires = jiffies + (5 * HZ);
- timer.function = ahd_linux_sem_timeout;
- add_timer(&timer);
- printf("Recovery code sleeping\n");
- down(&ahd->platform_data->eh_sem);
- printf("Recovery code awake\n");
- ret = del_timer(&timer);
- if (ret == 0) {
- printf("Timer Expired\n");
- retval = FAILED;
- }
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- ahd_lock(ahd, &s);
-#else
- spin_lock_irq(ahd->platform_data->host->host_lock);
-#endif
- }
- acmd = TAILQ_FIRST(&ahd->platform_data->completeq);
- TAILQ_INIT(&ahd->platform_data->completeq);
- ahd_midlayer_entrypoint_unlock(ahd, &s);
- if (acmd != NULL) {
- acmd = ahd_linux_run_complete_queue(ahd, acmd);
- if (acmd != NULL) {
- ahd_midlayer_entrypoint_lock(ahd, &s);
- ahd_schedule_completeq(ahd, acmd);
- ahd_midlayer_entrypoint_unlock(ahd, &s);
- }
- }
- ahd_schedule_runq(ahd);
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- spin_lock_irq(&io_request_lock);
-#endif
- return (retval);
-}
-
-
-static void
-ahd_linux_dev_reset_complete(Scsi_Cmnd *cmd)
-{
- free(cmd, M_DEVBUF);
-}
-
-/*
- * Attempt to send a target reset message to the device that timed out.
- */
-static int
-ahd_linux_dev_reset(Scsi_Cmnd *cmd)
-{
- struct ahd_softc *ahd;
- struct scsi_cmnd *recovery_cmd;
- struct ahd_linux_device *dev;
- struct ahd_initiator_tinfo *tinfo;
- struct ahd_tmode_tstate *tstate;
- struct scb *scb;
- struct hardware_scb *hscb;
- struct ahd_cmd *acmd;
- u_long s;
- struct timer_list timer;
- int retval;
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- spin_unlock_irq(&io_request_lock);
-#endif
- ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
- recovery_cmd = malloc(sizeof(struct scsi_cmnd), M_DEVBUF, M_WAITOK);
- memset(recovery_cmd, 0, sizeof(struct scsi_cmnd));
- recovery_cmd->device = cmd->device;
- recovery_cmd->scsi_done = ahd_linux_dev_reset_complete;
-#if AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_RECOVERY) != 0)
- printf("%s:%d:%d:%d: Device reset called for cmd %p\n",
- ahd_name(ahd), cmd->device->channel, cmd->device->id,
- cmd->device->lun, cmd);
-#endif
- ahd_midlayer_entrypoint_lock(ahd, &s);
-
- dev = ahd_linux_get_device(ahd, cmd->device->channel, cmd->device->id,
- cmd->device->lun, /*alloc*/FALSE);
- if (dev == NULL) {
- ahd_midlayer_entrypoint_unlock(ahd, &s);
- return (FAILED);
- }
- if ((scb = ahd_get_scb(ahd, AHD_NEVER_COL_IDX)) == NULL) {
- ahd_midlayer_entrypoint_unlock(ahd, &s);
- return (FAILED);
- }
- tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
- cmd->device->id, &tstate);
- recovery_cmd->result = CAM_REQ_INPROG << 16;
- recovery_cmd->host_scribble = (char *)scb;
- scb->io_ctx = recovery_cmd;
- scb->platform_data->dev = dev;
- scb->sg_count = 0;
- ahd_set_residual(scb, 0);
- ahd_set_sense_residual(scb, 0);
- hscb = scb->hscb;
- hscb->control = 0;
- hscb->scsiid = BUILD_SCSIID(ahd, cmd);
- hscb->lun = cmd->lun;
- hscb->cdb_len = 0;
- hscb->task_management = SIU_TASKMGMT_LUN_RESET;
- scb->flags |= SCB_DEVICE_RESET|SCB_RECOVERY_SCB|SCB_ACTIVE;
- if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
- scb->flags |= SCB_PACKETIZED;
- } else {
- hscb->control |= MK_MESSAGE;
- }
- dev->openings--;
- dev->active++;
- dev->commands_issued++;
- LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links);
- ahd_queue_scb(ahd, scb);
-
- ahd->platform_data->flags |= AHD_UP_EH_SEMAPHORE;
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- ahd_unlock(ahd, &s);
-#else
- spin_unlock_irq(ahd->platform_data->host->host_lock);
-#endif
- init_timer(&timer);
- timer.data = (u_long)ahd;
- timer.expires = jiffies + (5 * HZ);
- timer.function = ahd_linux_sem_timeout;
- add_timer(&timer);
- printf("Recovery code sleeping\n");
- down(&ahd->platform_data->eh_sem);
- printf("Recovery code awake\n");
- retval = SUCCESS;
- if (del_timer(&timer) == 0) {
- printf("Timer Expired\n");
- retval = FAILED;
- }
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- ahd_lock(ahd, &s);
-#else
- spin_lock_irq(ahd->platform_data->host->host_lock);
-#endif
- acmd = TAILQ_FIRST(&ahd->platform_data->completeq);
- TAILQ_INIT(&ahd->platform_data->completeq);
- ahd_midlayer_entrypoint_unlock(ahd, &s);
- if (acmd != NULL) {
- acmd = ahd_linux_run_complete_queue(ahd, acmd);
- if (acmd != NULL) {
- ahd_midlayer_entrypoint_lock(ahd, &s);
- ahd_schedule_completeq(ahd, acmd);
- ahd_midlayer_entrypoint_unlock(ahd, &s);
- }
- }
- ahd_schedule_runq(ahd);
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- spin_lock_irq(&io_request_lock);
-#endif
- printf("%s: Device reset returning 0x%x\n", ahd_name(ahd), retval);
- return (retval);
-}
-
-/*
- * Reset the SCSI bus.
- */
-static int
-ahd_linux_bus_reset(Scsi_Cmnd *cmd)
-{
- struct ahd_softc *ahd;
- struct ahd_cmd *acmd;
- u_long s;
- int found;
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- spin_unlock_irq(&io_request_lock);
-#endif
- ahd = *(struct ahd_softc **)cmd->device->host->hostdata;
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_RECOVERY) != 0)
- printf("%s: Bus reset called for cmd %p\n",
- ahd_name(ahd), cmd);
-#endif
- ahd_midlayer_entrypoint_lock(ahd, &s);
- found = ahd_reset_channel(ahd, cmd->channel + 'A',
- /*initiate reset*/TRUE);
- acmd = TAILQ_FIRST(&ahd->platform_data->completeq);
- TAILQ_INIT(&ahd->platform_data->completeq);
- ahd_midlayer_entrypoint_unlock(ahd, &s);
- if (bootverbose)
- printf("%s: SCSI bus reset delivered. "
- "%d SCBs aborted.\n", ahd_name(ahd), found);
-
- if (acmd != NULL) {
- acmd = ahd_linux_run_complete_queue(ahd, acmd);
- if (acmd != NULL) {
- ahd_midlayer_entrypoint_lock(ahd, &s);
- ahd_schedule_completeq(ahd, acmd);
- ahd_midlayer_entrypoint_unlock(ahd, &s);
- }
- }
-
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- spin_lock_irq(&io_request_lock);
-#endif
- return (SUCCESS);
-}
-
-Scsi_Host_Template aic79xx_driver_template = {
- .proc_info = ahd_linux_proc_info,
- .detect = ahd_linux_detect,
- .release = ahd_linux_release,
- .info = ahd_linux_info,
- .queuecommand = ahd_linux_queue,
- .eh_abort_handler = ahd_linux_abort,
- .eh_device_reset_handler = ahd_linux_dev_reset,
- .eh_bus_reset_handler = ahd_linux_bus_reset,
-#if defined(__i386__)
- .bios_param = ahd_linux_biosparam,
-#endif
- .can_queue = AHD_MAX_QUEUE,
- .this_id = -1,
- .sg_tablesize = AHD_NSEG,
- .cmd_per_lun = 2,
- .use_clustering = ENABLE_CLUSTERING,
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,7)
- /*
- * We can only map 16MB per-SG
- * so create a sector limit of
- * "16MB" in 2K sectors.
- */
- .max_sectors = 8192,
-#endif
-#if defined CONFIG_HIGHIO || LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,18)
-/* Assume RedHat Distribution with its different HIGHIO conventions. */
- .can_dma_32 = 1,
- .single_sg_okay = 1,
-#else
- .highmem_io = 1,
-#endif
-#endif
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
- .name = "aic79xx",
- .slave_alloc = ahd_linux_slave_alloc,
- .slave_configure = ahd_linux_slave_configure,
- .slave_destroy = ahd_linux_slave_destroy,
-#else
- .select_queue_depths = ahd_linux_select_queue_depth,
- .use_new_eh_code = 1,
-#endif
-};
-
-#define driver_template aic79xx_driver_template
-#include "scsi_module.c"
-/**************************** Tasklet Handler *********************************/
-
-static void
-ahd_runq_tasklet(unsigned long data)
-{
- struct ahd_softc* ahd;
- struct ahd_linux_device *dev;
- u_long flags;
-
- ahd = (struct ahd_softc *)data;
- ahd_lock(ahd, &flags);
- while ((dev = ahd_linux_next_device_to_run(ahd)) != NULL) {
-
- TAILQ_REMOVE(&ahd->platform_data->device_runq, dev, links);
- dev->flags &= ~AHD_DEV_ON_RUN_LIST;
- ahd_linux_check_device_queue(ahd, dev);
- /* Yeild to our interrupt handler */
- ahd_unlock(ahd, &flags);
- ahd_lock(ahd, &flags);
- }
- ahd_unlock(ahd, &flags);
-}
-
-/************************ Shutdown/halt/reboot hook ***************************/
-#include <linux/notifier.h>
-#include <linux/reboot.h>
-
-static struct notifier_block ahd_linux_notifier = {
- ahd_linux_halt, NULL, 0
-};
-
-static int ahd_linux_halt(struct notifier_block *nb, u_long event, void *buf)
-{
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- struct ahd_softc *ahd;
-
- /*
- * In 2.5.X, this is called prior to the filesystems
- * being synced and the SCSI layer being properly
- * shutdown. A different API is required there,
- * but the device hooks for this don't quite look
- * right.
- */
- if (event == SYS_DOWN || event == SYS_HALT) {
- TAILQ_FOREACH(ahd, &ahd_tailq, links) {
- ahd_shutdown(ahd);
- }
- }
-#endif
- return (NOTIFY_OK);
-}
-
-/******************************** Bus DMA *************************************/
-int
-ahd_dma_tag_create(struct ahd_softc *ahd, bus_dma_tag_t parent,
- bus_size_t alignment, bus_size_t boundary,
- bus_addr_t lowaddr, bus_addr_t highaddr,
- bus_dma_filter_t *filter, void *filterarg,
- bus_size_t maxsize, int nsegments,
- bus_size_t maxsegsz, int flags, bus_dma_tag_t *ret_tag)
-{
- bus_dma_tag_t dmat;
-
- dmat = malloc(sizeof(*dmat), M_DEVBUF, M_NOWAIT);
- if (dmat == NULL)
- return (ENOMEM);
-
- /*
- * Linux is very simplistic about DMA memory. For now don't
- * maintain all specification information. Once Linux supplies
- * better facilities for doing these operations, or the
- * needs of this particular driver change, we might need to do
- * more here.
- */
- dmat->alignment = alignment;
- dmat->boundary = boundary;
- dmat->maxsize = maxsize;
- *ret_tag = dmat;
- return (0);
-}
-
-void
-ahd_dma_tag_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat)
-{
- free(dmat, M_DEVBUF);
-}
-
-int
-ahd_dmamem_alloc(struct ahd_softc *ahd, bus_dma_tag_t dmat, void** vaddr,
- int flags, bus_dmamap_t *mapp)
-{
- bus_dmamap_t map;
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
- map = malloc(sizeof(*map), M_DEVBUF, M_NOWAIT);
- if (map == NULL)
- return (ENOMEM);
- /*
- * Although we can dma data above 4GB, our
- * "consistent" memory is below 4GB for
- * space efficiency reasons (only need a 4byte
- * address). For this reason, we have to reset
- * our dma mask when doing allocations.
- */
- if (ahd->dev_softc != NULL)
- ahd_pci_set_dma_mask(ahd->dev_softc, 0xFFFFFFFF);
- *vaddr = pci_alloc_consistent(ahd->dev_softc,
- dmat->maxsize, &map->bus_addr);
- if (ahd->dev_softc != NULL)
- ahd_pci_set_dma_mask(ahd->dev_softc,
- ahd->platform_data->hw_dma_mask);
-#else /* LINUX_VERSION_CODE < KERNEL_VERSION(2,3,0) */
- /*
- * At least in 2.2.14, malloc is a slab allocator so all
- * allocations are aligned. We assume for these kernel versions
- * that all allocations will be bellow 4Gig, physically contiguous,
- * and accessable via DMA by the controller.
- */
- map = NULL; /* No additional information to store */
- *vaddr = malloc(dmat->maxsize, M_DEVBUF, M_NOWAIT);
-#endif
- if (*vaddr == NULL)
- return (ENOMEM);
- *mapp = map;
- return(0);
-}
-
-void
-ahd_dmamem_free(struct ahd_softc *ahd, bus_dma_tag_t dmat,
- void* vaddr, bus_dmamap_t map)
-{
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
- pci_free_consistent(ahd->dev_softc, dmat->maxsize,
- vaddr, map->bus_addr);
-#else
- free(vaddr, M_DEVBUF);
-#endif
-}
-
-int
-ahd_dmamap_load(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map,
- void *buf, bus_size_t buflen, bus_dmamap_callback_t *cb,
- void *cb_arg, int flags)
-{
- /*
- * Assume for now that this will only be used during
- * initialization and not for per-transaction buffer mapping.
- */
- bus_dma_segment_t stack_sg;
-
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
- stack_sg.ds_addr = map->bus_addr;
-#else
-#define VIRT_TO_BUS(a) (uint32_t)virt_to_bus((void *)(a))
- stack_sg.ds_addr = VIRT_TO_BUS(buf);
-#endif
- stack_sg.ds_len = dmat->maxsize;
- cb(cb_arg, &stack_sg, /*nseg*/1, /*error*/0);
- return (0);
-}
-
-void
-ahd_dmamap_destroy(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map)
-{
- /*
- * The map may is NULL in our < 2.3.X implementation.
- */
- if (map != NULL)
- free(map, M_DEVBUF);
-}
-
-int
-ahd_dmamap_unload(struct ahd_softc *ahd, bus_dma_tag_t dmat, bus_dmamap_t map)
-{
- /* Nothing to do */
- return (0);
-}
-
-/********************* Platform Dependent Functions ***************************/
-int
-ahd_softc_comp(struct ahd_softc *lahd, struct ahd_softc *rahd)
-{
- int value;
- char primary_channel;
-
- /*
- * Under Linux, cards are ordered as follows:
- * 1) PCI devices with BIOS enabled sorted by bus/slot/func.
- * 2) All remaining PCI devices sorted by bus/slot/func.
- */
- value = (lahd->flags & AHD_BIOS_ENABLED)
- - (rahd->flags & AHD_BIOS_ENABLED);
- if (value != 0)
- /* Controllers with BIOS enabled have a *higher* priority */
- return (-value);
-
- /* Still equal. Sort by bus/slot/func. */
- if (aic79xx_reverse_scan != 0)
- value = ahd_get_pci_bus(rahd->dev_softc)
- - ahd_get_pci_bus(lahd->dev_softc);
- else
- value = ahd_get_pci_bus(lahd->dev_softc)
- - ahd_get_pci_bus(rahd->dev_softc);
- if (value != 0)
- return (value);
- if (aic79xx_reverse_scan != 0)
- value = ahd_get_pci_slot(rahd->dev_softc)
- - ahd_get_pci_slot(lahd->dev_softc);
- else
- value = ahd_get_pci_slot(lahd->dev_softc)
- - ahd_get_pci_slot(rahd->dev_softc);
- if (value != 0)
- return (value);
-
- /*
- * On multi-function devices, the user can choose
- * to have function 1 probed before function 0.
- * Give whichever channel is the primary channel
- * the lowest priority.
- */
- primary_channel = (lahd->flags & AHD_PRIMARY_CHANNEL) + 'A';
- value = 1;
- if (lahd->channel == primary_channel)
- value = -1;
- return (value);
-}
-
-static void
-ahd_linux_setup_tag_info(char *p, char *end, char *s)
-{
- char *base;
- char *tok;
- char *tok_end;
- char *tok_end2;
- int i;
- int instance;
- int targ;
- int done;
- char tok_list[] = {'.', ',', '{', '}', '\0'};
-
- if (*p != ':')
- return;
-
- instance = -1;
- targ = -1;
- done = FALSE;
- base = p;
- /* Forward us just past the ':' */
- tok = base + 1;
- tok_end = strchr(tok, '\0');
- if (tok_end < end)
- *tok_end = ',';
- while (!done) {
- switch (*tok) {
- case '{':
- if (instance == -1)
- instance = 0;
- else if (targ == -1)
- targ = 0;
- tok++;
- break;
- case '}':
- if (targ != -1)
- targ = -1;
- else if (instance != -1)
- instance = -1;
- tok++;
- break;
- case ',':
- case '.':
- if (instance == -1)
- done = TRUE;
- else if (targ >= 0)
- targ++;
- else if (instance >= 0)
- instance++;
- if ((targ >= AHD_NUM_TARGETS) ||
- (instance >= NUM_ELEMENTS(aic79xx_tag_info)))
- done = TRUE;
- tok++;
- if (!done) {
- base = tok;
- }
- break;
- case '\0':
- done = TRUE;
- break;
- default:
- done = TRUE;
- tok_end = strchr(tok, '\0');
- for (i = 0; tok_list[i]; i++) {
- tok_end2 = strchr(tok, tok_list[i]);
- if ((tok_end2) && (tok_end2 < tok_end)) {
- tok_end = tok_end2;
- done = FALSE;
- }
- }
- if ((instance >= 0) && (targ >= 0)
- && (instance < NUM_ELEMENTS(aic79xx_tag_info))
- && (targ < AHD_NUM_TARGETS)) {
- aic79xx_tag_info[instance].tag_commands[targ] =
- simple_strtoul(tok, NULL, 0) & 0xff;
- }
- tok = tok_end;
- break;
- }
- }
- while ((p != base) && (p != NULL))
- p = strsep(&s, ",.");
-}
-
-static void
-ahd_linux_setup_rd_strm_info(char *p, char *end, char *s)
-{
- char *base;
- char *tok;
- char *tok_end;
- char *tok_end2;
- int i;
- int instance;
- int done;
- char tok_list[] = {'.', ',', '{', '}', '\0'};
-
- if (*p != ':')
- return;
-
- instance = -1;
- done = FALSE;
- base = p;
- /* Forward us just past the ':' */
- tok = base + 1;
- tok_end = strchr(tok, '\0');
- if (tok_end < end)
- *tok_end = ',';
- while (!done) {
- switch (*tok) {
- case '{':
- if (instance == -1)
- instance = 0;
- tok++;
- break;
- case '}':
- if (instance != -1)
- instance = -1;
- tok++;
- break;
- case ',':
- case '.':
- if (instance == -1)
- done = TRUE;
- else if (instance >= 0)
- instance++;
- if (instance >= NUM_ELEMENTS(aic79xx_rd_strm_info))
- done = TRUE;
- tok++;
- if (!done) {
- base = tok;
- }
- break;
- case '\0':
- done = TRUE;
- break;
- default:
- done = TRUE;
- tok_end = strchr(tok, '\0');
- for (i = 0; tok_list[i]; i++) {
- tok_end2 = strchr(tok, tok_list[i]);
- if ((tok_end2) && (tok_end2 < tok_end)) {
- tok_end = tok_end2;
- done = FALSE;
- }
- }
- if ((instance >= 0)
- && (instance < NUM_ELEMENTS(aic79xx_rd_strm_info))) {
- aic79xx_rd_strm_info[instance] =
- simple_strtoul(tok, NULL, 0) & 0xffff;
- }
- tok = tok_end;
- break;
- }
- }
- while ((p != base) && (p != NULL))
- p = strsep(&s, ",.");
-}
-
-static void
-ahd_linux_setup_dv(char *p, char *end, char *s)
-{
- char *base;
- char *tok;
- char *tok_end;
- char *tok_end2;
- int i;
- int instance;
- int done;
- char tok_list[] = {'.', ',', '{', '}', '\0'};
-
- if (*p != ':')
- return;
-
- instance = -1;
- done = FALSE;
- base = p;
- /* Forward us just past the ':' */
- tok = base + 1;
- tok_end = strchr(tok, '\0');
- if (tok_end < end)
- *tok_end = ',';
- while (!done) {
- switch (*tok) {
- case '{':
- if (instance == -1)
- instance = 0;
- tok++;
- break;
- case '}':
- if (instance != -1)
- instance = -1;
- tok++;
- break;
- case ',':
- case '.':
- if (instance == -1)
- done = TRUE;
- else if (instance >= 0)
- instance++;
- if (instance >= NUM_ELEMENTS(aic79xx_dv_settings))
- done = TRUE;
- tok++;
- if (!done) {
- base = tok;
- }
- break;
- case '\0':
- done = TRUE;
- break;
- default:
- done = TRUE;
- tok_end = strchr(tok, '\0');
- for (i = 0; tok_list[i]; i++) {
- tok_end2 = strchr(tok, tok_list[i]);
- if ((tok_end2) && (tok_end2 < tok_end)) {
- tok_end = tok_end2;
- done = FALSE;
- }
- }
- if ((instance >= 0)
- && (instance < NUM_ELEMENTS(aic79xx_dv_settings))) {
- aic79xx_dv_settings[instance] =
- simple_strtol(tok, NULL, 0);
- }
- tok = tok_end;
- break;
- }
- }
- while ((p != base) && (p != NULL))
- p = strsep(&s, ",.");
-}
-
-static void
-ahd_linux_setup_iocell_info(char *p, char *end, char *s, int index)
-{
- char *base;
- char *tok;
- char *tok_end;
- char *tok_end2;
- uint8_t *iocell_info;
- int i;
- int instance;
- int done;
- char tok_list[] = {'.', ',', '{', '}', '\0'};
-
- if (*p != ':')
- return;
-
- instance = -1;
- done = FALSE;
- base = p;
- /* Forward us just past the ':' */
- tok = base + 1;
- tok_end = strchr(tok, '\0');
- if (tok_end < end)
- *tok_end = ',';
- while (!done) {
- switch (*tok) {
- case '{':
- if (instance == -1)
- instance = 0;
- tok++;
- break;
- case '}':
- if (instance != -1)
- instance = -1;
- tok++;
- break;
- case ',':
- case '.':
- if (instance == -1)
- done = TRUE;
- else if (instance >= 0)
- instance++;
- if (instance >= NUM_ELEMENTS(aic79xx_iocell_info))
- done = TRUE;
- tok++;
- if (!done) {
- base = tok;
- }
- break;
- case '\0':
- done = TRUE;
- break;
- default:
- done = TRUE;
- tok_end = strchr(tok, '\0');
- for (i = 0; tok_list[i]; i++) {
- tok_end2 = strchr(tok, tok_list[i]);
- if ((tok_end2) && (tok_end2 < tok_end)) {
- tok_end = tok_end2;
- done = FALSE;
- }
- }
- if ((instance >= 0)
- && (instance < NUM_ELEMENTS(aic79xx_iocell_info))) {
- iocell_info =
- (uint8_t*)&aic79xx_iocell_info[instance];
- iocell_info[index] =
- simple_strtoul(tok, NULL, 0) & 0xffff;
- }
- tok = tok_end;
- break;
- }
- }
- while ((p != base) && (p != NULL))
- p = strsep(&s, ",.");
-}
-
-static void
-ahd_linux_setup_tag_info_global(char *p)
-{
- int tags, i, j;
-
- tags = simple_strtoul(p + 1, NULL, 0) & 0xff;
- printf("Setting Global Tags= %d\n", tags);
-
- for (i = 0; i < NUM_ELEMENTS(aic79xx_tag_info); i++) {
- for (j = 0; j < AHD_NUM_TARGETS; j++) {
- aic79xx_tag_info[i].tag_commands[j] = tags;
- }
- }
-}
-
-/*
- * Handle Linux boot parameters. This routine allows for assigning a value
- * to a parameter with a ':' between the parameter and the value.
- * ie. aic79xx=stpwlev:1,extended
- */
-static int
-aic79xx_setup(char *s)
-{
- int i, n;
- char *p;
- char *end;
-
- static struct {
- const char *name;
- uint32_t *flag;
- } options[] = {
- { "extended", &aic79xx_extended },
- { "no_reset", &aic79xx_no_reset },
- { "verbose", &aic79xx_verbose },
- { "allow_memio", &aic79xx_allow_memio},
-#ifdef AHD_DEBUG
- { "debug", &ahd_debug },
-#endif
- { "reverse_scan", &aic79xx_reverse_scan },
- { "periodic_otag", &aic79xx_periodic_otag },
- { "pci_parity", &aic79xx_pci_parity },
- { "seltime", &aic79xx_seltime },
- { "tag_info", NULL },
- { "global_tag_depth", NULL},
- { "rd_strm", NULL },
- { "dv", NULL },
- { "slewrate", NULL },
- { "precomp", NULL },
- { "amplitude", NULL },
- };
-
- end = strchr(s, '\0');
-
- while ((p = strsep(&s, ",.")) != NULL) {
- if (*p == '\0')
- continue;
- for (i = 0; i < NUM_ELEMENTS(options); i++) {
- n = strlen(options[i].name);
-
- if (strncmp(options[i].name, p, n) != 0)
- continue;
-
- if (!strncmp(p, "global_tag_depth", n)) {
- ahd_linux_setup_tag_info_global(p + n);
- } else if (!strncmp(p, "tag_info", n)) {
- ahd_linux_setup_tag_info(p + n, end, s);
- } else if (strncmp(p, "rd_strm", n) == 0) {
- ahd_linux_setup_rd_strm_info(p + n, end, s);
- } else if (strncmp(p, "dv", n) == 0) {
- ahd_linux_setup_dv(p + n, end, s);
- } else if (strncmp(p, "slewrate", n) == 0) {
- ahd_linux_setup_iocell_info(p + n, end, s,
- AIC79XX_SLEWRATE_INDEX);
- } else if (strncmp(p, "precomp", n) == 0) {
- ahd_linux_setup_iocell_info(p + n, end, s,
- AIC79XX_PRECOMP_INDEX);
- } else if (strncmp(p, "amplitude", n) == 0) {
- ahd_linux_setup_iocell_info(p + n, end, s,
- AIC79XX_AMPLITUDE_INDEX);
- } else if (p[n] == ':') {
- *(options[i].flag) =
- simple_strtoul(p + n + 1, NULL, 0);
- } else if (!strncmp(p, "verbose", n)) {
- *(options[i].flag) = 1;
- } else {
- *(options[i].flag) = ~(*(options[i].flag));
- }
- break;
- }
- }
- return 1;
-}
-
-#if LINUX_VERSION_CODE > KERNEL_VERSION(2,3,0)
-__setup("aic79xx=", aic79xx_setup);
-#endif
-
-int aic79xx_verbose;
-
-int
-ahd_linux_register_host(struct ahd_softc *ahd, Scsi_Host_Template *template)
-{
- char buf[80];
- struct Scsi_Host *host;
- char *new_name;
- u_long s;
- u_long target;
-
- template->name = ahd->description;
- host = scsi_register(template, sizeof(struct ahd_softc *));
- if (host == NULL)
- return (ENOMEM);
-
- *((struct ahd_softc **)host->hostdata) = ahd;
- ahd_lock(ahd, &s);
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
- scsi_assign_lock(host, &ahd->platform_data->spin_lock);
-#endif
- ahd->platform_data->host = host;
- host->can_queue = AHD_MAX_QUEUE;
- host->cmd_per_lun = 2;
- host->sg_tablesize = AHD_NSEG;
- host->this_id = ahd->our_id;
- host->irq = ahd->platform_data->irq;
- host->max_id = (ahd->features & AHD_WIDE) ? 16 : 8;
- host->max_lun = AHD_NUM_LUNS;
- host->max_channel = 0;
- ahd_set_unit(ahd, ahd_linux_next_unit());
- sprintf(buf, "scsi%d", host->host_no);
- new_name = malloc(strlen(buf) + 1, M_DEVBUF, M_NOWAIT);
- if (new_name != NULL) {
- strcpy(new_name, buf);
- ahd_set_name(ahd, new_name);
- }
- host->unique_id = ahd->unit;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,4)
- scsi_set_pci_device(host, ahd->dev_softc);
-#endif
- ahd_linux_initialize_scsi_bus(ahd);
- ahd_unlock(ahd, &s);
- ahd->platform_data->dv_pid = kernel_thread(ahd_linux_dv_thread, ahd, 0);
- ahd_lock(ahd, &s);
- if (ahd->platform_data->dv_pid < 0) {
- printf("%s: Failed to create DV thread, error= %d\n",
- ahd_name(ahd), ahd->platform_data->dv_pid);
- return (-ahd->platform_data->dv_pid);
- }
- /*
- * Initially allocate *all* of our linux target objects
- * so that the DV thread will scan them all in parallel
- * just after driver initialization. Any device that
- * does not exist will have its target object destroyed
- * by the selection timeout handler. In the case of a
- * device that appears after the initial DV scan, async
- * negotiation will occur for the first command, and DV
- * will comence should that first command be successful.
- */
- for (target = 0; target < host->max_id; target++)
- ahd_linux_alloc_target(ahd, 0, target);
- ahd_intr_enable(ahd, TRUE);
- ahd_linux_start_dv(ahd);
- ahd_unlock(ahd, &s);
- return (0);
-}
-
-uint64_t
-ahd_linux_get_memsize()
-{
- struct sysinfo si;
-
- si_meminfo(&si);
- return ((uint64_t)si.totalram << PAGE_SHIFT);
-}
-
-/*
- * Find the smallest available unit number to use
- * for a new device. We don't just use a static
- * count to handle the "repeated hot-(un)plug"
- * scenario.
- */
-static int
-ahd_linux_next_unit()
-{
- struct ahd_softc *ahd;
- int unit;
-
- unit = 0;
-retry:
- TAILQ_FOREACH(ahd, &ahd_tailq, links) {
- if (ahd->unit == unit) {
- unit++;
- goto retry;
- }
- }
- return (unit);
-}
-
-/*
- * Place the SCSI bus into a known state by either resetting it,
- * or forcing transfer negotiations on the next command to any
- * target.
- */
-static void
-ahd_linux_initialize_scsi_bus(struct ahd_softc *ahd)
-{
- u_int target_id;
- u_int numtarg;
-
- target_id = 0;
- numtarg = 0;
-
- if (aic79xx_no_reset != 0)
- ahd->flags &= ~AHD_RESET_BUS_A;
-
- if ((ahd->flags & AHD_RESET_BUS_A) != 0)
- ahd_reset_channel(ahd, 'A', /*initiate_reset*/TRUE);
- else
- numtarg = (ahd->features & AHD_WIDE) ? 16 : 8;
-
- /*
- * Force negotiation to async for all targets that
- * will not see an initial bus reset.
- */
- for (; target_id < numtarg; target_id++) {
- struct ahd_devinfo devinfo;
- struct ahd_initiator_tinfo *tinfo;
- struct ahd_tmode_tstate *tstate;
-
- tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
- target_id, &tstate);
- ahd_compile_devinfo(&devinfo, ahd->our_id, target_id,
- CAM_LUN_WILDCARD, 'A', ROLE_INITIATOR);
- ahd_update_neg_request(ahd, &devinfo, tstate,
- tinfo, AHD_NEG_ALWAYS);
- }
- /* Give the bus some time to recover */
- if ((ahd->flags & AHD_RESET_BUS_A) != 0) {
- ahd_freeze_simq(ahd);
- init_timer(&ahd->platform_data->reset_timer);
- ahd->platform_data->reset_timer.data = (u_long)ahd;
- ahd->platform_data->reset_timer.expires =
- jiffies + (AIC79XX_RESET_DELAY * HZ)/1000;
- ahd->platform_data->reset_timer.function =
- (ahd_linux_callback_t *)ahd_release_simq;
- add_timer(&ahd->platform_data->reset_timer);
- }
-}
-
-int
-ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg)
-{
- ahd->platform_data =
- malloc(sizeof(struct ahd_platform_data), M_DEVBUF, M_NOWAIT);
- if (ahd->platform_data == NULL)
- return (ENOMEM);
- memset(ahd->platform_data, 0, sizeof(struct ahd_platform_data));
- TAILQ_INIT(&ahd->platform_data->completeq);
- TAILQ_INIT(&ahd->platform_data->device_runq);
- ahd->platform_data->irq = AHD_LINUX_NOIRQ;
- ahd->platform_data->hw_dma_mask = 0xFFFFFFFF;
- ahd_lockinit(ahd);
- ahd_done_lockinit(ahd);
- init_timer(&ahd->platform_data->completeq_timer);
- ahd->platform_data->completeq_timer.data = (u_long)ahd;
- ahd->platform_data->completeq_timer.function =
- (ahd_linux_callback_t *)ahd_linux_thread_run_complete_queue;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
- init_MUTEX_LOCKED(&ahd->platform_data->eh_sem);
- init_MUTEX_LOCKED(&ahd->platform_data->dv_sem);
- init_MUTEX_LOCKED(&ahd->platform_data->dv_cmd_sem);
-#else
- ahd->platform_data->eh_sem = MUTEX_LOCKED;
- ahd->platform_data->dv_sem = MUTEX_LOCKED;
- ahd->platform_data->dv_cmd_sem = MUTEX_LOCKED;
-#endif
- ahd_setup_runq_tasklet(ahd);
- ahd->seltime = (aic79xx_seltime & 0x3) << 4;
- if (TAILQ_EMPTY(&ahd_tailq))
- register_reboot_notifier(&ahd_linux_notifier);
- return (0);
-}
-
-void
-ahd_platform_free(struct ahd_softc *ahd)
-{
- struct ahd_linux_target *targ;
- struct ahd_linux_device *dev;
- u_long s;
- int i, j;
-
- if (ahd->platform_data != NULL) {
- /* Kill the DV kthread */
- if (ahd->platform_data->dv_pid != 0) {
- ahd_lock(ahd, &s);
- ahd->platform_data->flags |= AHD_DV_SHUTDOWN;
- ahd_unlock(ahd, &s);
- up(&ahd->platform_data->dv_sem);
- do {
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- printf("%s: Waiting for DV thread to "
- "exit\n", ahd_name(ahd));
- }
-#endif
- } while (waitpid(ahd->platform_data->dv_pid, NULL,
- __WCLONE) == -ERESTARTSYS);
- }
- ahd_teardown_runq_tasklet(ahd);
- if (ahd->platform_data->host != NULL)
- scsi_unregister(ahd->platform_data->host);
-
- /* destroy all of the device and target objects */
- for (i = 0; i < AHD_NUM_TARGETS; i++) {
- targ = ahd->platform_data->targets[i];
- if (targ != NULL) {
- for (j = 0; j < AHD_NUM_LUNS; j++) {
- if (targ->devices[j] != NULL) {
- dev = targ->devices[j];
- ahd_linux_free_device(ahd, dev);
- }
- if (ahd->platform_data->targets[i] ==
- NULL)
- break;
- }
- }
- }
-
- if (ahd->platform_data->irq != AHD_LINUX_NOIRQ)
- free_irq(ahd->platform_data->irq, ahd);
- if (ahd->tags[0] == BUS_SPACE_PIO
- && ahd->bshs[0].ioport != 0)
- release_region(ahd->bshs[0].ioport, 256);
- if (ahd->tags[1] == BUS_SPACE_PIO
- && ahd->bshs[1].ioport != 0)
- release_region(ahd->bshs[1].ioport, 256);
- if (ahd->tags[0] == BUS_SPACE_MEMIO
- && ahd->bshs[0].maddr != NULL) {
- u_long base_addr;
-
- base_addr = (u_long)ahd->bshs[0].maddr;
- base_addr &= PAGE_MASK;
- iounmap((void *)base_addr);
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
- release_mem_region(ahd->platform_data->mem_busaddr,
- 0x1000);
-#endif
- }
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
- /* XXX Need an instance detach in the PCI code */
- if (ahd->dev_softc != NULL)
- ahd->dev_softc->driver = NULL;
-#endif
- free(ahd->platform_data, M_DEVBUF);
- }
- if (TAILQ_EMPTY(&ahd_tailq)) {
- unregister_reboot_notifier(&ahd_linux_notifier);
-#ifdef CONFIG_PCI
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0)
- pci_unregister_driver(&aic79xx_pci_driver);
-#endif
-#endif
- }
-}
-
-void
-ahd_platform_init(struct ahd_softc *ahd)
-{
- /*
- * Lookup and commit any modified IO Cell options.
- */
- if (ahd->unit < NUM_ELEMENTS(aic79xx_iocell_info)) {
- struct ahd_linux_iocell_opts *iocell_opts;
-
- iocell_opts = &aic79xx_iocell_info[ahd->unit];
- if (iocell_opts->precomp != AIC79XX_DEFAULT_PRECOMP)
- AHD_SET_PRECOMP(ahd, iocell_opts->precomp);
- if (iocell_opts->slewrate != AIC79XX_DEFAULT_SLEWRATE)
- AHD_SET_SLEWRATE(ahd, iocell_opts->slewrate);
- if (iocell_opts->amplitude != AIC79XX_DEFAULT_AMPLITUDE)
- AHD_SET_AMPLITUDE(ahd, iocell_opts->amplitude);
- }
-
-}
-
-void
-ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb)
-{
- ahd_platform_abort_scbs(ahd, SCB_GET_TARGET(ahd, scb),
- SCB_GET_CHANNEL(ahd, scb),
- SCB_GET_LUN(scb), SCB_LIST_NULL,
- ROLE_UNKNOWN, CAM_REQUEUE_REQ);
-}
-
-void
-ahd_platform_set_tags(struct ahd_softc *ahd, struct ahd_devinfo *devinfo,
- ahd_queue_alg alg)
-{
- struct ahd_linux_device *dev;
- int was_queuing;
- int now_queuing;
-
- dev = ahd_linux_get_device(ahd, devinfo->channel - 'A',
- devinfo->target,
- devinfo->lun, /*alloc*/FALSE);
- if (dev == NULL)
- return;
- was_queuing = dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED);
- now_queuing = alg != AHD_QUEUE_NONE;
- if ((dev->flags & AHD_DEV_FREEZE_TIL_EMPTY) == 0
- && (was_queuing != now_queuing)
- && (dev->active != 0)) {
- dev->flags |= AHD_DEV_FREEZE_TIL_EMPTY;
- dev->qfrozen++;
- }
-
- dev->flags &= ~(AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED|AHD_DEV_PERIODIC_OTAG);
- if (now_queuing) {
- u_int usertags;
-
- usertags = ahd_linux_user_tagdepth(ahd, devinfo);
- if (!was_queuing) {
- /*
- * Start out agressively and allow our
- * dynamic queue depth algorithm to take
- * care of the rest.
- */
- dev->maxtags = usertags;
- dev->openings = dev->maxtags - dev->active;
- }
- if (dev->maxtags == 0) {
- /*
- * Queueing is disabled by the user.
- */
- dev->openings = 1;
- } else if (alg == AHD_QUEUE_TAGGED) {
- dev->flags |= AHD_DEV_Q_TAGGED;
- if (aic79xx_periodic_otag != 0)
- dev->flags |= AHD_DEV_PERIODIC_OTAG;
- } else
- dev->flags |= AHD_DEV_Q_BASIC;
- } else {
- /* We can only have one opening. */
- dev->maxtags = 0;
- dev->openings = 1 - dev->active;
- }
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
- if (dev->scsi_device != NULL) {
- switch ((dev->flags & (AHD_DEV_Q_BASIC|AHD_DEV_Q_TAGGED))) {
- case AHD_DEV_Q_BASIC:
- scsi_adjust_queue_depth(dev->scsi_device,
- MSG_SIMPLE_TASK,
- dev->openings + dev->active);
- break;
- case AHD_DEV_Q_TAGGED:
- scsi_adjust_queue_depth(dev->scsi_device,
- MSG_ORDERED_TASK,
- dev->openings + dev->active);
- break;
- default:
- /*
- * We allow the OS to queue 2 untagged transactions to
- * us at any time even though we can only execute them
- * serially on the controller/device. This should
- * remove some latency.
- */
- scsi_adjust_queue_depth(dev->scsi_device,
- /*NON-TAGGED*/0,
- /*queue depth*/2);
- break;
- }
- }
-#endif
-}
-
-int
-ahd_platform_abort_scbs(struct ahd_softc *ahd, int target, char channel,
- int lun, u_int tag, role_t role, uint32_t status)
-{
- int targ;
- int maxtarg;
- int maxlun;
- int clun;
- int count;
-
- if (tag != SCB_LIST_NULL)
- return (0);
-
- targ = 0;
- if (target != CAM_TARGET_WILDCARD) {
- targ = target;
- maxtarg = targ + 1;
- } else {
- maxtarg = (ahd->features & AHD_WIDE) ? 16 : 8;
- }
- clun = 0;
- if (lun != CAM_LUN_WILDCARD) {
- clun = lun;
- maxlun = clun + 1;
- } else {
- maxlun = AHD_NUM_LUNS;
- }
-
- count = 0;
- for (; targ < maxtarg; targ++) {
-
- for (; clun < maxlun; clun++) {
- struct ahd_linux_device *dev;
- struct ahd_busyq *busyq;
- struct ahd_cmd *acmd;
-
- dev = ahd_linux_get_device(ahd, /*chan*/0, targ,
- clun, /*alloc*/FALSE);
- if (dev == NULL)
- continue;
-
- busyq = &dev->busyq;
- while ((acmd = TAILQ_FIRST(busyq)) != NULL) {
- Scsi_Cmnd *cmd;
-
- cmd = &acmd_scsi_cmd(acmd);
- TAILQ_REMOVE(busyq, acmd,
- acmd_links.tqe);
- count++;
- cmd->result = status << 16;
- ahd_linux_queue_cmd_complete(ahd, cmd);
- }
- }
- }
-
- return (count);
-}
-
-static void
-ahd_linux_thread_run_complete_queue(struct ahd_softc *ahd)
-{
- struct ahd_cmd *acmd;
- u_long flags;
-
- ahd_lock(ahd, &flags);
- del_timer(&ahd->platform_data->completeq_timer);
- ahd->platform_data->flags &= ~AHD_RUN_CMPLT_Q_TIMER;
- acmd = TAILQ_FIRST(&ahd->platform_data->completeq);
- TAILQ_INIT(&ahd->platform_data->completeq);
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- ahd_unlock(ahd, &flags);
-#endif
- if (acmd != NULL) {
- acmd = ahd_linux_run_complete_queue(ahd, acmd);
- if (acmd != NULL) {
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- ahd_lock(ahd, &flags);
-#endif
- ahd_schedule_completeq(ahd, acmd);
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- ahd_unlock(ahd, &flags);
-#endif
- }
- }
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
- ahd_unlock(ahd, &flags);
-#endif
-}
-
-static void
-ahd_linux_start_dv(struct ahd_softc *ahd)
-{
-
- /*
- * Freeze the simq and signal ahd_linux_queue to not let any
- * more commands through
- */
- if ((ahd->platform_data->flags & AHD_DV_ACTIVE) == 0) {
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV)
- printf("%s: Starting DV\n", ahd_name(ahd));
-#endif
-
- ahd->platform_data->flags |= AHD_DV_ACTIVE;
- ahd_freeze_simq(ahd);
-
- /* Wake up the DV kthread */
- up(&ahd->platform_data->dv_sem);
- }
-}
-
-static int
-ahd_linux_dv_thread(void *data)
-{
- struct ahd_softc *ahd;
- int target;
- u_long s;
-
- ahd = (struct ahd_softc *)data;
-
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV)
- printf("In DV Thread\n");
-#endif
-
- /*
- * Don't care about any signals.
- */
- siginitsetinv(¤t->blocked, 0);
-
- /*
- * Complete thread creation.
- */
- lock_kernel();
- daemonize();
- sprintf(current->comm, "ahd_dv_%d", ahd->unit);
- unlock_kernel();
-
- while (1) {
- /*
- * Use down_interruptible() rather than down() to
- * avoid inclusion in the load average.
- */
- down_interruptible(&ahd->platform_data->dv_sem);
-
- /* Check to see if we've been signaled to exit */
- ahd_lock(ahd, &s);
- if ((ahd->platform_data->flags & AHD_DV_SHUTDOWN) != 0) {
- ahd_unlock(ahd, &s);
- return (0);
- }
- ahd_unlock(ahd, &s);
-
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV)
- printf("%s: Beginning Domain Validation\n",
- ahd_name(ahd));
-#endif
-
- /*
- * Wait for any pending commands to drain before proceeding.
- */
- ahd_lock(ahd, &s);
- while (LIST_FIRST(&ahd->pending_scbs) != NULL) {
- ahd->platform_data->flags |= AHD_DV_WAIT_SIMQ_EMPTY;
- ahd_unlock(ahd, &s);
- down_interruptible(&ahd->platform_data->dv_sem);
- ahd_lock(ahd, &s);
- }
-
- /*
- * Wait for the SIMQ to be released so that DV is the
- * only reason the queue is frozen.
- */
- while (AHD_DV_SIMQ_FROZEN(ahd) == 0) {
- ahd->platform_data->flags |= AHD_DV_WAIT_SIMQ_RELEASE;
- ahd_unlock(ahd, &s);
- down_interruptible(&ahd->platform_data->dv_sem);
- ahd_lock(ahd, &s);
- }
- ahd_unlock(ahd, &s);
-
- for (target = 0; target < AHD_NUM_TARGETS; target++)
- ahd_linux_dv_target(ahd, target);
-
- ahd_lock(ahd, &s);
- ahd->platform_data->flags &= ~AHD_DV_ACTIVE;
- ahd_unlock(ahd, &s);
-
- /*
- * Release the SIMQ so that normal commands are
- * allowed to continue on the bus.
- */
- ahd_release_simq(ahd);
- }
-
- return (0);
-}
-
-#define AHD_LINUX_DV_INQ_SHORT_LEN 36
-#define AHD_LINUX_DV_INQ_LEN 256
-#define AHD_LINUX_DV_TIMEOUT (HZ / 4)
-
-#define AHD_SET_DV_STATE(ahd, targ, newstate) \
- ahd_set_dv_state(ahd, targ, newstate, __LINE__)
-
-static __inline void
-ahd_set_dv_state(struct ahd_softc *ahd, struct ahd_linux_target *targ,
- ahd_dv_state newstate, u_int line)
-{
- ahd_dv_state oldstate;
-
- oldstate = targ->dv_state;
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV)
- printf("%s:%d: Going from state %d to state %d\n",
- ahd_name(ahd), line, oldstate, newstate);
-#endif
-
- if (oldstate == newstate)
- targ->dv_state_retry++;
- else
- targ->dv_state_retry = 0;
- targ->dv_state = newstate;
-}
-
-static void
-ahd_linux_dv_target(struct ahd_softc *ahd, u_int target_offset)
-{
- struct ahd_devinfo devinfo;
- struct ahd_linux_target *targ;
- struct scsi_cmnd *cmd;
- struct scsi_device *scsi_dev;
- struct scsi_sense_data *sense;
- uint8_t *buffer;
- u_long s;
- u_int timeout;
- int echo_size;
-
- sense = NULL;
- buffer = NULL;
- echo_size = 0;
- ahd_lock(ahd, &s);
- targ = ahd->platform_data->targets[target_offset];
- if (targ == NULL || (targ->flags & AHD_DV_REQUIRED) == 0) {
- ahd_unlock(ahd, &s);
- return;
- }
- ahd_compile_devinfo(&devinfo, ahd->our_id, targ->target, /*lun*/0,
- targ->channel + 'A', ROLE_INITIATOR);
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, &devinfo);
- printf("Performing DV\n");
- }
-#endif
-
- ahd_unlock(ahd, &s);
-
- cmd = malloc(sizeof(struct scsi_cmnd), M_DEVBUF, M_WAITOK);
- scsi_dev = malloc(sizeof(struct scsi_device), M_DEVBUF, M_WAITOK);
- scsi_dev->host = ahd->platform_data->host;
- scsi_dev->id = devinfo.target;
- scsi_dev->lun = devinfo.lun;
- scsi_dev->channel = devinfo.channel - 'A';
- ahd->platform_data->dv_scsi_dev = scsi_dev;
-
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_INQ_SHORT_ASYNC);
-
- while (targ->dv_state != AHD_DV_STATE_EXIT) {
- timeout = AHD_LINUX_DV_TIMEOUT;
- switch (targ->dv_state) {
- case AHD_DV_STATE_INQ_SHORT_ASYNC:
- case AHD_DV_STATE_INQ_ASYNC:
- case AHD_DV_STATE_INQ_ASYNC_VERIFY:
- /*
- * Set things to async narrow to reduce the
- * chance that the INQ will fail.
- */
- ahd_lock(ahd, &s);
- ahd_set_syncrate(ahd, &devinfo, 0, 0, 0,
- AHD_TRANS_GOAL, /*paused*/FALSE);
- ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
- AHD_TRANS_GOAL, /*paused*/FALSE);
- ahd_unlock(ahd, &s);
- timeout = 10 * HZ;
- targ->flags &= ~AHD_INQ_VALID;
- /* FALLTHROUGH */
- case AHD_DV_STATE_INQ_VERIFY:
- {
- u_int inq_len;
-
- if (targ->dv_state == AHD_DV_STATE_INQ_SHORT_ASYNC)
- inq_len = AHD_LINUX_DV_INQ_SHORT_LEN;
- else
- inq_len = targ->inq_data->additional_length + 5;
- ahd_linux_dv_inq(ahd, cmd, &devinfo, targ, inq_len);
- break;
- }
- case AHD_DV_STATE_TUR:
- case AHD_DV_STATE_BUSY:
- ahd_linux_dv_tur(ahd, cmd, &devinfo);
- break;
- case AHD_DV_STATE_REBD:
- ahd_linux_dv_rebd(ahd, cmd, &devinfo, targ);
- break;
- case AHD_DV_STATE_WEB:
- ahd_linux_dv_web(ahd, cmd, &devinfo, targ);
- break;
-
- case AHD_DV_STATE_REB:
- ahd_linux_dv_reb(ahd, cmd, &devinfo, targ);
- break;
-
- case AHD_DV_STATE_SU:
- ahd_linux_dv_su(ahd, cmd, &devinfo, targ);
- timeout = 50 * HZ;
- break;
-
- default:
- ahd_print_devinfo(ahd, &devinfo);
- printf("Unknown DV state %d\n", targ->dv_state);
- goto out;
- }
-
- /* Queue the command and wait for it to complete */
- /* Abuse eh_timeout in the scsi_cmnd struct for our purposes */
- init_timer(&cmd->eh_timeout);
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MESSAGES) != 0)
- /*
- * All of the printfs during negotiation
- * really slow down the negotiation.
- * Add a bit of time just to be safe.
- */
- timeout += HZ;
-#endif
- scsi_add_timer(cmd, timeout, ahd_linux_dv_timeout);
- /*
- * In 2.5.X, it is assumed that all calls from the
- * "midlayer" (which we are emulating) will have the
- * ahd host lock held.
- */
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
- ahd_lock(ahd, &s);
-#endif
- ahd_linux_queue(cmd, ahd_linux_dv_complete);
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
- ahd_unlock(ahd, &s);
-#endif
- down_interruptible(&ahd->platform_data->dv_cmd_sem);
- /*
- * Wait for the SIMQ to be released so that DV is the
- * only reason the queue is frozen.
- */
- ahd_lock(ahd, &s);
- while (AHD_DV_SIMQ_FROZEN(ahd) == 0) {
- ahd->platform_data->flags |= AHD_DV_WAIT_SIMQ_RELEASE;
- ahd_unlock(ahd, &s);
- down_interruptible(&ahd->platform_data->dv_sem);
- ahd_lock(ahd, &s);
- }
- ahd_unlock(ahd, &s);
-
- ahd_linux_dv_transition(ahd, cmd, &devinfo, targ);
- }
-
-out:
- if ((targ->flags & AHD_INQ_VALID) != 0
- && ahd_linux_get_device(ahd, devinfo.channel - 'A',
- devinfo.target, devinfo.lun,
- /*alloc*/FALSE) == NULL) {
- /*
- * The DV state machine failed to configure this device.
- * This is normal if DV is disabled. Since we have inquiry
- * data, filter it and use the "optimistic" negotiation
- * parameters found in the inquiry string.
- */
- ahd_linux_filter_inquiry(ahd, &devinfo);
- if ((targ->flags & (AHD_BASIC_DV|AHD_ENHANCED_DV)) != 0) {
- ahd_print_devinfo(ahd, &devinfo);
- printf("DV failed to configure device. "
- "Please file a bug report against "
- "this driver.\n");
- }
- }
-
- if (cmd != NULL)
- free(cmd, M_DEVBUF);
-
- if (ahd->platform_data->dv_scsi_dev != NULL) {
- free(ahd->platform_data->dv_scsi_dev, M_DEVBUF);
- ahd->platform_data->dv_scsi_dev = NULL;
- }
-
- ahd_lock(ahd, &s);
- if (targ->dv_buffer != NULL)
- free(targ->dv_buffer, M_DEVBUF);
- if (targ->dv_buffer1 != NULL)
- free(targ->dv_buffer1, M_DEVBUF);
- targ->flags &= ~AHD_DV_REQUIRED;
- if (targ->refcount == 0)
- ahd_linux_free_target(ahd, targ);
- ahd_unlock(ahd, &s);
-}
-
-static void
-ahd_linux_dv_transition(struct ahd_softc *ahd, struct scsi_cmnd *cmd,
- struct ahd_devinfo *devinfo,
- struct ahd_linux_target *targ)
-{
- cam_status cam_status;
- u_int32_t status;
- u_int scsi_status;
-
- scsi_status = ahd_cmd_get_scsi_status(cmd);
- cam_status = ahd_cmd_get_transaction_status(cmd);
- status = aic_error_action(cmd, targ->inq_data, cam_status, scsi_status);
-
-
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("Entering ahd_linux_dv_transition, state= %d, "
- "status= 0x%x, cmd->result= 0x%x\n", targ->dv_state,
- status, cmd->result);
- }
-#endif
-
- switch (targ->dv_state) {
- case AHD_DV_STATE_INQ_SHORT_ASYNC:
- case AHD_DV_STATE_INQ_ASYNC:
- switch (status & SS_MASK) {
- case SS_NOP:
- {
- AHD_SET_DV_STATE(ahd, targ, targ->dv_state+1);
- break;
- }
- case SS_INQ_REFRESH:
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_INQ_SHORT_ASYNC);
- break;
- case SS_TUR:
- case SS_RETRY:
- AHD_SET_DV_STATE(ahd, targ, targ->dv_state);
- if (ahd_cmd_get_transaction_status(cmd)
- == CAM_REQUEUE_REQ)
- targ->dv_state_retry--;
- if ((status & SS_ERRMASK) == EBUSY)
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_BUSY);
- if (targ->dv_state_retry < 10)
- break;
- /* FALLTHROUGH */
- default:
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT);
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("Failed DV inquiry, skipping\n");
- }
-#endif
- break;
- }
- break;
- case AHD_DV_STATE_INQ_ASYNC_VERIFY:
- switch (status & SS_MASK) {
- case SS_NOP:
- {
- u_int xportflags;
- u_int spi3data;
-
- if (memcmp(targ->inq_data, targ->dv_buffer,
- AHD_LINUX_DV_INQ_LEN) != 0) {
- /*
- * Inquiry data must have changed.
- * Try from the top again.
- */
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_INQ_SHORT_ASYNC);
- break;
- }
-
- AHD_SET_DV_STATE(ahd, targ, targ->dv_state+1);
- targ->flags |= AHD_INQ_VALID;
- if (ahd_linux_user_dv_setting(ahd) == 0)
- break;
-
- xportflags = targ->inq_data->flags;
- if ((xportflags & (SID_Sync|SID_WBus16)) == 0)
- break;
-
- spi3data = targ->inq_data->spi3data;
- switch (spi3data & SID_SPI_CLOCK_DT_ST) {
- default:
- case SID_SPI_CLOCK_ST:
- /* Assume only basic DV is supported. */
- targ->flags |= AHD_BASIC_DV;
- break;
- case SID_SPI_CLOCK_DT:
- case SID_SPI_CLOCK_DT_ST:
- targ->flags |= AHD_ENHANCED_DV;
- break;
- }
- break;
- }
- case SS_INQ_REFRESH:
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_INQ_SHORT_ASYNC);
- break;
- case SS_TUR:
- case SS_RETRY:
- AHD_SET_DV_STATE(ahd, targ, targ->dv_state);
- if (ahd_cmd_get_transaction_status(cmd)
- == CAM_REQUEUE_REQ)
- targ->dv_state_retry--;
-
- if ((status & SS_ERRMASK) == EBUSY)
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_BUSY);
- if (targ->dv_state_retry < 10)
- break;
- /* FALLTHROUGH */
- default:
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT);
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("Failed DV inquiry, skipping\n");
- }
-#endif
- break;
- }
- break;
- case AHD_DV_STATE_INQ_VERIFY:
- switch (status & SS_MASK) {
- case SS_NOP:
- {
-
- if (memcmp(targ->inq_data, targ->dv_buffer,
- AHD_LINUX_DV_INQ_LEN) == 0) {
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT);
- break;
- }
-
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- int i;
-
- ahd_print_devinfo(ahd, devinfo);
- printf("Inquiry buffer mismatch:");
- for (i = 0; i < AHD_LINUX_DV_INQ_LEN; i++) {
- if ((i & 0xF) == 0)
- printf("\n ");
- printf("0x%x:0x0%x ",
- ((uint8_t *)targ->inq_data)[i],
- targ->dv_buffer[i]);
- }
- printf("\n");
- }
-#endif
-
- if (ahd_linux_dv_fallback(ahd, devinfo) != 0) {
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT);
- break;
- }
- /*
- * Do not count "falling back"
- * against our retries.
- */
- targ->dv_state_retry = 0;
- AHD_SET_DV_STATE(ahd, targ, targ->dv_state);
- break;
- }
- case SS_INQ_REFRESH:
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_INQ_SHORT_ASYNC);
- break;
- case SS_TUR:
- case SS_RETRY:
- AHD_SET_DV_STATE(ahd, targ, targ->dv_state);
- if (ahd_cmd_get_transaction_status(cmd)
- == CAM_REQUEUE_REQ) {
- targ->dv_state_retry--;
- } else if ((status & SSQ_FALLBACK) != 0) {
- if (ahd_linux_dv_fallback(ahd, devinfo) != 0) {
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_EXIT);
- break;
- }
- /*
- * Do not count "falling back"
- * against our retries.
- */
- targ->dv_state_retry = 0;
- } else if ((status & SS_ERRMASK) == EBUSY)
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_BUSY);
- if (targ->dv_state_retry < 10)
- break;
- /* FALLTHROUGH */
- default:
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT);
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("Failed DV inquiry, skipping\n");
- }
-#endif
- break;
- }
- break;
-
- case AHD_DV_STATE_TUR:
- switch (status & SS_MASK) {
- case SS_NOP:
- if ((targ->flags & AHD_BASIC_DV) != 0) {
- ahd_linux_filter_inquiry(ahd, devinfo);
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_INQ_VERIFY);
- } else if ((targ->flags & AHD_ENHANCED_DV) != 0) {
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_REBD);
- } else {
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT);
- }
- break;
- case SS_RETRY:
- case SS_TUR:
- if ((status & SS_ERRMASK) == EBUSY) {
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_BUSY);
- break;
- }
- AHD_SET_DV_STATE(ahd, targ, targ->dv_state);
- if (ahd_cmd_get_transaction_status(cmd)
- == CAM_REQUEUE_REQ) {
- targ->dv_state_retry--;
- } else if ((status & SSQ_FALLBACK) != 0) {
- if (ahd_linux_dv_fallback(ahd, devinfo) != 0) {
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_EXIT);
- break;
- }
- /*
- * Do not count "falling back"
- * against our retries.
- */
- targ->dv_state_retry = 0;
- }
- if (targ->dv_state_retry >= 10) {
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("DV TUR reties exhausted\n");
- }
-#endif
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT);
- break;
- }
- if (status & SSQ_DELAY)
- scsi_sleep(1 * HZ);
-
- break;
- case SS_START:
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_SU);
- break;
- case SS_INQ_REFRESH:
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_INQ_SHORT_ASYNC);
- break;
- default:
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT);
- break;
- }
- break;
-
- case AHD_DV_STATE_REBD:
- switch (status & SS_MASK) {
- case SS_NOP:
- {
- uint32_t echo_size;
-
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_WEB);
- echo_size = scsi_3btoul(&targ->dv_buffer[1]);
- echo_size &= 0x1FFF;
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("Echo buffer size= %d\n", echo_size);
- }
-#endif
- if (echo_size == 0) {
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT);
- break;
- }
-
- /* Generate the buffer pattern */
- targ->dv_echo_size = echo_size;
- ahd_linux_generate_dv_pattern(targ);
- /*
- * Setup initial negotiation values.
- */
- ahd_linux_filter_inquiry(ahd, devinfo);
- break;
- }
- case SS_INQ_REFRESH:
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_INQ_SHORT_ASYNC);
- break;
- case SS_RETRY:
- AHD_SET_DV_STATE(ahd, targ, targ->dv_state);
- if (ahd_cmd_get_transaction_status(cmd)
- == CAM_REQUEUE_REQ)
- targ->dv_state_retry--;
- if (targ->dv_state_retry <= 10)
- break;
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("DV REBD reties exhausted\n");
- }
-#endif
- /* FALLTHROUGH */
- case SS_FATAL:
- default:
- /*
- * Setup initial negotiation values
- * and try level 1 DV.
- */
- ahd_linux_filter_inquiry(ahd, devinfo);
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_INQ_VERIFY);
- targ->dv_echo_size = 0;
- break;
- }
- break;
-
- case AHD_DV_STATE_WEB:
- switch (status & SS_MASK) {
- case SS_NOP:
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_REB);
- break;
- case SS_INQ_REFRESH:
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_INQ_SHORT_ASYNC);
- break;
- case SS_RETRY:
- AHD_SET_DV_STATE(ahd, targ, targ->dv_state);
- if (ahd_cmd_get_transaction_status(cmd)
- == CAM_REQUEUE_REQ) {
- targ->dv_state_retry--;
- } else if ((status & SSQ_FALLBACK) != 0) {
- if (ahd_linux_dv_fallback(ahd, devinfo) != 0) {
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_EXIT);
- break;
- }
- /*
- * Do not count "falling back"
- * against our retries.
- */
- targ->dv_state_retry = 0;
- }
- if (targ->dv_state_retry <= 10)
- break;
- /* FALLTHROUGH */
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("DV WEB reties exhausted\n");
- }
-#endif
- default:
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT);
- break;
- }
- break;
-
- case AHD_DV_STATE_REB:
- switch (status & SS_MASK) {
- case SS_NOP:
- if (memcmp(targ->dv_buffer, targ->dv_buffer1,
- targ->dv_echo_size) != 0) {
- if (ahd_linux_dv_fallback(ahd, devinfo) != 0)
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_EXIT);
- else
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_WEB);
- break;
- }
-
- if (targ->dv_buffer != NULL) {
- free(targ->dv_buffer, M_DEVBUF);
- targ->dv_buffer = NULL;
- }
- if (targ->dv_buffer1 != NULL) {
- free(targ->dv_buffer1, M_DEVBUF);
- targ->dv_buffer1 = NULL;
- }
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT);
- break;
- case SS_INQ_REFRESH:
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_INQ_SHORT_ASYNC);
- break;
- case SS_RETRY:
- AHD_SET_DV_STATE(ahd, targ, targ->dv_state);
- if (ahd_cmd_get_transaction_status(cmd)
- == CAM_REQUEUE_REQ) {
- targ->dv_state_retry--;
- } else if ((status & SSQ_FALLBACK) != 0) {
- if (ahd_linux_dv_fallback(ahd, devinfo) != 0) {
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_EXIT);
- break;
- }
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_WEB);
- }
- if (targ->dv_state_retry <= 10) {
- if ((status & (SSQ_DELAY_RANDOM|SSQ_DELAY))!= 0)
- scsi_sleep(ahd->our_id*HZ/10);
- break;
- }
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("DV REB reties exhausted\n");
- }
-#endif
- /* FALLTHROUGH */
- default:
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT);
- break;
- }
- break;
-
- case AHD_DV_STATE_SU:
- switch (status & SS_MASK) {
- case SS_NOP:
- case SS_INQ_REFRESH:
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_INQ_SHORT_ASYNC);
- break;
- default:
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT);
- break;
- }
- break;
-
- case AHD_DV_STATE_BUSY:
- switch (status & SS_MASK) {
- case SS_NOP:
- case SS_INQ_REFRESH:
- AHD_SET_DV_STATE(ahd, targ,
- AHD_DV_STATE_INQ_SHORT_ASYNC);
- break;
- case SS_TUR:
- case SS_RETRY:
- AHD_SET_DV_STATE(ahd, targ, targ->dv_state);
- if (ahd_cmd_get_transaction_status(cmd)
- == CAM_REQUEUE_REQ) {
- targ->dv_state_retry--;
- } else if (targ->dv_state_retry < 60) {
- if ((status & SSQ_DELAY) != 0)
- scsi_sleep(1 * HZ);
- } else {
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("DV BUSY reties exhausted\n");
- }
-#endif
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT);
- }
- break;
- default:
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT);
- break;
- }
- break;
-
- default:
- printf("%s: Invalid DV completion state %d\n", ahd_name(ahd),
- targ->dv_state);
- AHD_SET_DV_STATE(ahd, targ, AHD_DV_STATE_EXIT);
- break;
- }
-}
-
-static void
-ahd_linux_dv_fill_cmd(struct ahd_softc *ahd, struct scsi_cmnd *cmd,
- struct ahd_devinfo *devinfo)
-{
- memset(cmd, 0, sizeof(struct scsi_cmnd));
- cmd->device = ahd->platform_data->dv_scsi_dev;
- cmd->scsi_done = ahd_linux_dv_complete;
-}
-
-/*
- * Synthesize an inquiry command. On the return trip, it'll be
- * sniffed and the device transfer settings set for us.
- */
-static void
-ahd_linux_dv_inq(struct ahd_softc *ahd, struct scsi_cmnd *cmd,
- struct ahd_devinfo *devinfo, struct ahd_linux_target *targ,
- u_int request_length)
-{
-
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("Sending INQ\n");
- }
-#endif
- if (targ->inq_data == NULL)
- targ->inq_data = malloc(AHD_LINUX_DV_INQ_LEN,
- M_DEVBUF, M_WAITOK);
- if (targ->dv_state > AHD_DV_STATE_INQ_ASYNC) {
- if (targ->dv_buffer != NULL)
- free(targ->dv_buffer, M_DEVBUF);
- targ->dv_buffer = malloc(AHD_LINUX_DV_INQ_LEN,
- M_DEVBUF, M_WAITOK);
- }
-
- ahd_linux_dv_fill_cmd(ahd, cmd, devinfo);
- cmd->sc_data_direction = SCSI_DATA_READ;
- cmd->cmd_len = 6;
- cmd->cmnd[0] = INQUIRY;
- cmd->cmnd[4] = request_length;
- cmd->request_bufflen = request_length;
- if (targ->dv_state > AHD_DV_STATE_INQ_ASYNC)
- cmd->request_buffer = targ->dv_buffer;
- else
- cmd->request_buffer = targ->inq_data;
- memset(cmd->request_buffer, 0, AHD_LINUX_DV_INQ_LEN);
-}
-
-static void
-ahd_linux_dv_tur(struct ahd_softc *ahd, struct scsi_cmnd *cmd,
- struct ahd_devinfo *devinfo)
-{
-
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("Sending TUR\n");
- }
-#endif
- /* Do a TUR to clear out any non-fatal transitional state */
- ahd_linux_dv_fill_cmd(ahd, cmd, devinfo);
- cmd->sc_data_direction = SCSI_DATA_NONE;
- cmd->cmd_len = 6;
- cmd->cmnd[0] = TEST_UNIT_READY;
-}
-
-#define AHD_REBD_LEN 4
-
-static void
-ahd_linux_dv_rebd(struct ahd_softc *ahd, struct scsi_cmnd *cmd,
- struct ahd_devinfo *devinfo, struct ahd_linux_target *targ)
-{
-
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("Sending REBD\n");
- }
-#endif
- if (targ->dv_buffer != NULL)
- free(targ->dv_buffer, M_DEVBUF);
- targ->dv_buffer = malloc(AHD_REBD_LEN, M_DEVBUF, M_WAITOK);
- ahd_linux_dv_fill_cmd(ahd, cmd, devinfo);
- cmd->sc_data_direction = SCSI_DATA_READ;
- cmd->cmd_len = 10;
- cmd->cmnd[0] = READ_BUFFER;
- cmd->cmnd[1] = 0x0b;
- scsi_ulto3b(AHD_REBD_LEN, &cmd->cmnd[6]);
- cmd->request_bufflen = AHD_REBD_LEN;
- cmd->underflow = cmd->request_bufflen;
- cmd->request_buffer = targ->dv_buffer;
-}
-
-static void
-ahd_linux_dv_web(struct ahd_softc *ahd, struct scsi_cmnd *cmd,
- struct ahd_devinfo *devinfo, struct ahd_linux_target *targ)
-{
-
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("Sending WEB\n");
- }
-#endif
- ahd_linux_dv_fill_cmd(ahd, cmd, devinfo);
- cmd->sc_data_direction = SCSI_DATA_WRITE;
- cmd->cmd_len = 10;
- cmd->cmnd[0] = WRITE_BUFFER;
- cmd->cmnd[1] = 0x0a;
- scsi_ulto3b(targ->dv_echo_size, &cmd->cmnd[6]);
- cmd->request_bufflen = targ->dv_echo_size;
- cmd->underflow = cmd->request_bufflen;
- cmd->request_buffer = targ->dv_buffer;
-}
-
-static void
-ahd_linux_dv_reb(struct ahd_softc *ahd, struct scsi_cmnd *cmd,
- struct ahd_devinfo *devinfo, struct ahd_linux_target *targ)
-{
-
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("Sending REB\n");
- }
-#endif
- ahd_linux_dv_fill_cmd(ahd, cmd, devinfo);
- cmd->sc_data_direction = SCSI_DATA_READ;
- cmd->cmd_len = 10;
- cmd->cmnd[0] = READ_BUFFER;
- cmd->cmnd[1] = 0x0a;
- scsi_ulto3b(targ->dv_echo_size, &cmd->cmnd[6]);
- cmd->request_bufflen = targ->dv_echo_size;
- cmd->underflow = cmd->request_bufflen;
- cmd->request_buffer = targ->dv_buffer1;
-}
-
-static void
-ahd_linux_dv_su(struct ahd_softc *ahd, struct scsi_cmnd *cmd,
- struct ahd_devinfo *devinfo,
- struct ahd_linux_target *targ)
-{
- u_int le;
-
- le = SID_IS_REMOVABLE(targ->inq_data) ? SSS_LOEJ : 0;
-
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("Sending SU\n");
- }
-#endif
- ahd_linux_dv_fill_cmd(ahd, cmd, devinfo);
- cmd->sc_data_direction = SCSI_DATA_NONE;
- cmd->cmd_len = 6;
- cmd->cmnd[0] = START_STOP_UNIT;
- cmd->cmnd[4] = le | SSS_START;
-}
-
-static __inline int
-ahd_linux_dv_fallback(struct ahd_softc *ahd, struct ahd_devinfo *devinfo)
-{
- u_long s;
- int retval;
-
- ahd_lock(ahd, &s);
- retval = ahd_linux_fallback(ahd, devinfo);
- ahd_unlock(ahd, &s);
-
- return (retval);
-}
-
-static int
-ahd_linux_fallback(struct ahd_softc *ahd, struct ahd_devinfo *devinfo)
-{
- struct ahd_linux_target *targ;
- struct ahd_initiator_tinfo *tinfo;
- struct ahd_transinfo *goal;
- struct ahd_tmode_tstate *tstate;
- u_int width;
- u_int period;
- u_int offset;
- u_int ppr_options;
- u_int cur_speed;
- u_int wide_speed;
- u_int narrow_speed;
- u_int fallback_speed;
-
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- ahd_print_devinfo(ahd, devinfo);
- printf("Trying to fallback\n");
- }
-#endif
- targ = ahd->platform_data->targets[devinfo->target_offset];
- tinfo = ahd_fetch_transinfo(ahd, devinfo->channel,
- devinfo->our_scsiid,
- devinfo->target, &tstate);
- goal = &tinfo->goal;
- width = goal->width;
- period = goal->period;
- offset = goal->offset;
- ppr_options = goal->ppr_options;
- if (offset == 0)
- period = AHD_ASYNC_XFER_PERIOD;
- if (targ->dv_next_narrow_period == 0)
- targ->dv_next_narrow_period = MAX(period, AHD_SYNCRATE_ULTRA2);
- if (targ->dv_next_wide_period == 0)
- targ->dv_next_wide_period = period;
- if (targ->dv_max_width == 0)
- targ->dv_max_width = width;
- if (targ->dv_max_ppr_options == 0)
- targ->dv_max_ppr_options = ppr_options;
- if (targ->dv_last_ppr_options == 0)
- targ->dv_last_ppr_options = ppr_options;
-
- cur_speed = aic_calc_speed(width, period, offset, AHD_SYNCRATE_MIN);
- wide_speed = aic_calc_speed(MSG_EXT_WDTR_BUS_16_BIT,
- targ->dv_next_wide_period,
- MAX_OFFSET, AHD_SYNCRATE_MIN);
- narrow_speed = aic_calc_speed(MSG_EXT_WDTR_BUS_8_BIT,
- targ->dv_next_narrow_period,
- MAX_OFFSET, AHD_SYNCRATE_MIN);
- fallback_speed = aic_calc_speed(width, period+1, offset,
- AHD_SYNCRATE_MIN);
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- printf("cur_speed= %d, wide_speed= %d, narrow_speed= %d, "
- "fallback_speed= %d\n", cur_speed, wide_speed,
- narrow_speed, fallback_speed);
- }
-#endif
-
- if (cur_speed > 160000) {
- /*
- * Paced/DT/IU_REQ only transfer speeds. All we
- * can do is fallback in terms of syncrate.
- */
- period++;
- } else if (cur_speed > 80000) {
- if ((ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
- /*
- * Try without IU_REQ as it may be confusing
- * an expander.
- */
- ppr_options &= ~MSG_EXT_PPR_IU_REQ;
- } else {
- /*
- * Paced/DT only transfer speeds. All we
- * can do is fallback in terms of syncrate.
- */
- period++;
- ppr_options = targ->dv_max_ppr_options;
- }
- } else if (cur_speed > 3300) {
-
- /*
- * In this range we the following
- * options ordered from highest to
- * lowest desireability:
- *
- * o Wide/DT
- * o Wide/non-DT
- * o Narrow at a potentally higher sync rate.
- *
- * All modes are tested with and without IU_REQ
- * set since using IUs may confuse an expander.
- */
- if ((ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
-
- ppr_options &= ~MSG_EXT_PPR_IU_REQ;
- } else if ((ppr_options & MSG_EXT_PPR_DT_REQ) != 0) {
- /*
- * Try going non-DT.
- */
- ppr_options = targ->dv_max_ppr_options;
- ppr_options &= ~MSG_EXT_PPR_DT_REQ;
- } else if (targ->dv_last_ppr_options != 0) {
- /*
- * Try without QAS or any other PPR options.
- * We may need a non-PPR message to work with
- * an expander. We look at the "last PPR options"
- * so we will perform this fallback even if the
- * target responded to our PPR negotiation with
- * no option bits set.
- */
- ppr_options = 0;
- } else if (width == MSG_EXT_WDTR_BUS_16_BIT) {
- /*
- * If the next narrow speed is greater than
- * the next wide speed, fallback to narrow.
- * Otherwise fallback to the next DT/Wide setting.
- * The narrow async speed will always be smaller
- * than the wide async speed, so handle this case
- * specifically.
- */
- ppr_options = targ->dv_max_ppr_options;
- if (narrow_speed > fallback_speed
- || period >= AHD_ASYNC_XFER_PERIOD) {
- targ->dv_next_wide_period = period+1;
- width = MSG_EXT_WDTR_BUS_8_BIT;
- period = targ->dv_next_narrow_period;
- } else {
- period++;
- }
- } else if ((ahd->features & AHD_WIDE) != 0
- && targ->dv_max_width != 0
- && wide_speed >= fallback_speed
- && (targ->dv_next_wide_period <= AHD_ASYNC_XFER_PERIOD
- || period >= AHD_ASYNC_XFER_PERIOD)) {
-
- /*
- * We are narrow. Try falling back
- * to the next wide speed with
- * all supported ppr options set.
- */
- targ->dv_next_narrow_period = period+1;
- width = MSG_EXT_WDTR_BUS_16_BIT;
- period = targ->dv_next_wide_period;
- ppr_options = targ->dv_max_ppr_options;
- } else {
- /* Only narrow fallback is allowed. */
- period++;
- ppr_options = targ->dv_max_ppr_options;
- }
- } else {
- return (-1);
- }
- offset = MAX_OFFSET;
- ahd_find_syncrate(ahd, &period, &ppr_options, AHD_SYNCRATE_PACED);
- ahd_set_width(ahd, devinfo, width, AHD_TRANS_GOAL, FALSE);
- if (period == 0) {
- period = 0;
- offset = 0;
- ppr_options = 0;
- if (width == MSG_EXT_WDTR_BUS_8_BIT)
- targ->dv_next_narrow_period = AHD_ASYNC_XFER_PERIOD;
- else
- targ->dv_next_wide_period = AHD_ASYNC_XFER_PERIOD;
- }
- ahd_set_syncrate(ahd, devinfo, period, offset,
- ppr_options, AHD_TRANS_GOAL, FALSE);
- targ->dv_last_ppr_options = ppr_options;
- return (0);
-}
-
-static void
-ahd_linux_dv_timeout(struct scsi_cmnd *cmd)
-{
- struct ahd_softc *ahd;
- struct ahd_cmd *acmd;
- struct ahd_linux_device *next_dev;
- struct scb *scb;
- u_long flags;
-
- ahd = *((struct ahd_softc **)cmd->device->host->hostdata);
- ahd_lock(ahd, &flags);
-
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV) {
- printf("%s: Timeout while doing DV command %x.\n",
- ahd_name(ahd), cmd->cmnd[0]);
- ahd_dump_card_state(ahd);
- }
-#endif
-
- /*
- * Guard against "done race". No action is
- * required if we just completed.
- */
- if ((scb = (struct scb *)cmd->host_scribble) == NULL) {
- ahd_unlock(ahd, &flags);
- return;
- }
-
- /*
- * Command has not completed. Mark this
- * SCB as having failing status prior to
- * resetting the bus, so we get the correct
- * error code.
- */
- if ((scb->flags & SCB_SENSE) != 0)
- ahd_set_transaction_status(scb, CAM_AUTOSENSE_FAIL);
- else
- ahd_set_transaction_status(scb, CAM_CMD_TIMEOUT);
- ahd_reset_channel(ahd, cmd->channel + 'A', /*initiate*/TRUE);
-
- /*
- * Add a minimal bus settle delay for devices that are slow to
- * respond after bus resets.
- */
- ahd_freeze_simq(ahd);
- init_timer(&ahd->platform_data->reset_timer);
- ahd->platform_data->reset_timer.data = (u_long)ahd;
- ahd->platform_data->reset_timer.expires = jiffies + HZ / 2;
- ahd->platform_data->reset_timer.function =
- (ahd_linux_callback_t *)ahd_release_simq;
- add_timer(&ahd->platform_data->reset_timer);
- /*
- * In 2.5.X, the "done lock" is the ahd_lock.
- * Instead of dropping and re-acquiring the same
- * lock in the 2.5.X case, just hold our ahd_lock
- * the whole time. ahd_done_lock() has been
- * made a no-op for 2.5.X too.
- */
- acmd = TAILQ_FIRST(&ahd->platform_data->completeq);
- TAILQ_INIT(&ahd->platform_data->completeq);
- next_dev = ahd_linux_next_device_to_run(ahd);
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- ahd_unlock(ahd, &flags);
-#endif
- if (next_dev)
- ahd_schedule_runq(ahd);
- if (acmd != NULL) {
- acmd = ahd_linux_run_complete_queue(ahd, acmd);
- if (acmd != NULL) {
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- ahd_lock(ahd, &flags);
-#endif
- ahd_schedule_completeq(ahd, acmd);
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- ahd_unlock(ahd, &flags);
-#endif
- }
- }
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
- ahd_unlock(ahd, &flags);
-#endif
-}
-
-static void
-ahd_linux_dv_complete(struct scsi_cmnd *cmd)
-{
- struct ahd_softc *ahd;
-
- ahd = *((struct ahd_softc **)cmd->device->host->hostdata);
-
- /* Delete the DV timer before it goes off! */
- scsi_delete_timer(cmd);
-
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_DV)
- printf("%s:%c:%d: Command completed, status= 0x%x\n",
- ahd_name(ahd), cmd->device->channel, cmd->device->id,
- cmd->result);
-#endif
-
- /* Wake up the state machine */
- up(&ahd->platform_data->dv_cmd_sem);
-}
-
-static void
-ahd_linux_generate_dv_pattern(struct ahd_linux_target *targ)
-{
- uint16_t b;
- u_int i;
- u_int j;
-
- if (targ->dv_buffer != NULL)
- free(targ->dv_buffer, M_DEVBUF);
- targ->dv_buffer = malloc(targ->dv_echo_size, M_DEVBUF, M_WAITOK);
- if (targ->dv_buffer1 != NULL)
- free(targ->dv_buffer1, M_DEVBUF);
- targ->dv_buffer1 = malloc(targ->dv_echo_size, M_DEVBUF, M_WAITOK);
-
- i = 0;
-
- b = 0x0001;
- for (j = 0 ; i < targ->dv_echo_size; j++) {
- if (j < 32) {
- /*
- * 32bytes of sequential numbers.
- */
- targ->dv_buffer[i++] = j & 0xff;
- } else if (j < 48) {
- /*
- * 32bytes of repeating 0x0000, 0xffff.
- */
- targ->dv_buffer[i++] = (j & 0x02) ? 0xff : 0x00;
- } else if (j < 64) {
- /*
- * 32bytes of repeating 0x5555, 0xaaaa.
- */
- targ->dv_buffer[i++] = (j & 0x02) ? 0xaa : 0x55;
- } else {
- /*
- * Remaining buffer is filled with a repeating
- * patter of:
- *
- * 0xffff
- * ~0x0001 << shifted once in each loop.
- */
- if (j & 0x02) {
- if (j & 0x01) {
- targ->dv_buffer[i++] = ~(b >> 8) & 0xff;
- b <<= 1;
- if (b == 0x0000)
- b = 0x0001;
- } else {
- targ->dv_buffer[i++] = (~b & 0xff);
- }
- } else {
- targ->dv_buffer[i++] = 0xff;
- }
- }
- }
-}
-
-static u_int
-ahd_linux_user_tagdepth(struct ahd_softc *ahd, struct ahd_devinfo *devinfo)
-{
- static int warned_user;
- u_int tags;
-
- tags = 0;
- if ((ahd->user_discenable & devinfo->target_mask) != 0) {
- if (warned_user == 0
- && ahd->unit >= NUM_ELEMENTS(aic79xx_tag_info)) {
-
- printf("aic79xx: WARNING, insufficient "
- "tag_info instances for installed "
- "controllers. Using defaults\n");
- printf("aic79xx: Please update the "
- "aic79xx_tag_info array in the "
- "aic79xx.c source file.\n");
- tags = AHD_MAX_QUEUE;
- warned_user++;
- } else {
- adapter_tag_info_t *tag_info;
-
- tag_info = &aic79xx_tag_info[ahd->unit];
- tags = tag_info->tag_commands[devinfo->target_offset];
- if (tags > AHD_MAX_QUEUE)
- tags = AHD_MAX_QUEUE;
- }
- }
- return (tags);
-}
-
-static u_int
-ahd_linux_user_dv_setting(struct ahd_softc *ahd)
-{
- static int warned_user;
- int dv;
-
- if (warned_user == 0
- && ahd->unit >= NUM_ELEMENTS(aic79xx_dv_settings)) {
-
- printf("aic79xx: WARNING, insufficient "
- "dv settings instances for installed "
- "controllers. Using defaults\n");
- printf("aic79xx: Please update the "
- "aic79xx_dv_settings array in the "
- "aic79xx.c source file.\n");
- dv = -1;
- warned_user++;
- } else {
-
- dv = aic79xx_dv_settings[ahd->unit];
- }
-
- if (dv < 0) {
- /*
- * Apply the default.
- */
- dv = 1;
- if (ahd->seep_config != 0)
- dv = (ahd->seep_config->bios_control & CFENABLEDV);
- }
- return (dv);
-}
-
-/*
- * Determines the queue depth for a given device.
- */
-static void
-ahd_linux_device_queue_depth(struct ahd_softc *ahd,
- struct ahd_linux_device *dev)
-{
- struct ahd_devinfo devinfo;
- u_int tags;
-
- ahd_compile_devinfo(&devinfo,
- ahd->our_id,
- dev->target->target, dev->lun,
- dev->target->channel == 0 ? 'A' : 'B',
- ROLE_INITIATOR);
- tags = ahd_linux_user_tagdepth(ahd, &devinfo);
- if (tags != 0
- && dev->scsi_device != NULL
- && dev->scsi_device->tagged_supported != 0) {
-
- ahd_set_tags(ahd, &devinfo, AHD_QUEUE_TAGGED);
- printf("scsi%d:%c:%d:%d: Tagged Queuing enabled. Depth %d\n",
- ahd->platform_data->host->host_no, devinfo.channel,
- devinfo.target, devinfo.lun, tags);
- } else {
- ahd_set_tags(ahd, &devinfo, AHD_QUEUE_NONE);
- }
-}
-
-static void
-ahd_linux_run_device_queue(struct ahd_softc *ahd, struct ahd_linux_device *dev)
-{
- struct ahd_cmd *acmd;
- struct scsi_cmnd *cmd;
- struct scb *scb;
- struct hardware_scb *hscb;
- struct ahd_initiator_tinfo *tinfo;
- struct ahd_tmode_tstate *tstate;
- u_int col_idx;
- uint16_t mask;
-
- if ((dev->flags & AHD_DEV_ON_RUN_LIST) != 0)
- panic("running device on run list");
-
- while ((acmd = TAILQ_FIRST(&dev->busyq)) != NULL
- && dev->openings > 0 && dev->qfrozen == 0) {
-
- /*
- * Schedule us to run later. The only reason we are not
- * running is because the whole controller Q is frozen.
- */
- if (ahd->platform_data->qfrozen != 0
- && AHD_DV_SIMQ_FROZEN(ahd) == 0) {
-
- TAILQ_INSERT_TAIL(&ahd->platform_data->device_runq,
- dev, links);
- dev->flags |= AHD_DEV_ON_RUN_LIST;
- return;
- }
-
- cmd = &acmd_scsi_cmd(acmd);
-
- /*
- * Get an scb to use.
- */
- tinfo = ahd_fetch_transinfo(ahd, 'A', ahd->our_id,
- cmd->device->id, &tstate);
- if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) == 0
- || (tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0) {
- col_idx = AHD_NEVER_COL_IDX;
- } else {
- col_idx = AHD_BUILD_COL_IDX(cmd->device->id,
- cmd->device->lun);
- }
- if ((scb = ahd_get_scb(ahd, col_idx)) == NULL) {
- TAILQ_INSERT_TAIL(&ahd->platform_data->device_runq,
- dev, links);
- dev->flags |= AHD_DEV_ON_RUN_LIST;
- ahd->flags |= AHD_RESOURCE_SHORTAGE;
- return;
- }
- TAILQ_REMOVE(&dev->busyq, acmd, acmd_links.tqe);
- scb->io_ctx = cmd;
- scb->platform_data->dev = dev;
- hscb = scb->hscb;
- cmd->host_scribble = (char *)scb;
-
- /*
- * Fill out basics of the HSCB.
- */
- hscb->control = 0;
- hscb->scsiid = BUILD_SCSIID(ahd, cmd);
- hscb->lun = cmd->lun;
- scb->hscb->task_management = 0;
- mask = SCB_GET_TARGET_MASK(ahd, scb);
-
- if ((ahd->user_discenable & mask) != 0)
- hscb->control |= DISCENB;
-
- if (AHD_DV_CMD(cmd) != 0)
- scb->flags |= SCB_SILENT;
-
- if ((tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ) != 0)
- scb->flags |= SCB_PACKETIZED;
-
- if ((tstate->auto_negotiate & mask) != 0) {
- scb->flags |= SCB_AUTO_NEGOTIATE;
- scb->hscb->control |= MK_MESSAGE;
- }
-
- if ((dev->flags & (AHD_DEV_Q_TAGGED|AHD_DEV_Q_BASIC)) != 0) {
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
- int msg_bytes;
- uint8_t tag_msgs[2];
-
- msg_bytes = scsi_populate_tag_msg(cmd, tag_msgs);
- if (msg_bytes && tag_msgs[0] != MSG_SIMPLE_TASK) {
- hscb->control |= tag_msgs[0];
- if (tag_msgs[0] == MSG_ORDERED_TASK)
- dev->commands_since_idle_or_otag = 0;
- } else
-#endif
- if (dev->commands_since_idle_or_otag == AHD_OTAG_THRESH
- && (dev->flags & AHD_DEV_Q_TAGGED) != 0) {
- hscb->control |= MSG_ORDERED_TASK;
- dev->commands_since_idle_or_otag = 0;
- } else {
- hscb->control |= MSG_SIMPLE_TASK;
- }
- }
-
- hscb->cdb_len = cmd->cmd_len;
- memcpy(hscb->shared_data.idata.cdb, cmd->cmnd, hscb->cdb_len);
-
- scb->sg_count = 0;
- ahd_set_residual(scb, 0);
- ahd_set_sense_residual(scb, 0);
- if (cmd->use_sg != 0) {
- void *sg;
- struct scatterlist *cur_seg;
- u_int nseg;
- int dir;
-
- cur_seg = (struct scatterlist *)cmd->request_buffer;
- dir = scsi_to_pci_dma_dir(cmd->sc_data_direction);
- nseg = pci_map_sg(ahd->dev_softc, cur_seg,
- cmd->use_sg, dir);
- scb->platform_data->xfer_len = 0;
- for (sg = scb->sg_list; nseg > 0; nseg--, cur_seg++) {
- bus_addr_t addr;
- bus_size_t len;
-
- addr = sg_dma_address(cur_seg);
- len = sg_dma_len(cur_seg);
- scb->platform_data->xfer_len += len;
- sg = ahd_sg_setup(ahd, scb, sg, addr, len,
- /*last*/nseg == 1);
- }
- } else if (cmd->request_bufflen != 0) {
- void *sg;
- bus_addr_t addr;
- int dir;
-
- sg = scb->sg_list;
- dir = scsi_to_pci_dma_dir(cmd->sc_data_direction);
- addr = pci_map_single(ahd->dev_softc,
- cmd->request_buffer,
- cmd->request_bufflen, dir);
- scb->platform_data->xfer_len = cmd->request_bufflen;
- scb->platform_data->buf_busaddr = addr;
- sg = ahd_sg_setup(ahd, scb, sg, addr,
- cmd->request_bufflen, /*last*/TRUE);
- }
-
- LIST_INSERT_HEAD(&ahd->pending_scbs, scb, pending_links);
- dev->openings--;
- dev->active++;
- dev->commands_issued++;
-
- /* Update the error counting bucket and dump if needed */
- if (dev->target->cmds_since_error) {
- dev->target->cmds_since_error++;
- if (dev->target->cmds_since_error >
- AHD_LINUX_ERR_THRESH)
- dev->target->cmds_since_error = 0;
- }
-
- if ((dev->flags & AHD_DEV_PERIODIC_OTAG) != 0)
- dev->commands_since_idle_or_otag++;
- scb->flags |= SCB_ACTIVE;
- ahd_queue_scb(ahd, scb);
- }
-}
-
-/*
- * SCSI controller interrupt handler.
- */
-void
-ahd_linux_isr(int irq, void *dev_id, struct pt_regs * regs)
-{
- struct ahd_softc *ahd;
- struct ahd_cmd *acmd;
- u_long flags;
- struct ahd_linux_device *next_dev;
-
- ahd = (struct ahd_softc *) dev_id;
- ahd_lock(ahd, &flags);
- ahd_intr(ahd);
- acmd = TAILQ_FIRST(&ahd->platform_data->completeq);
- TAILQ_INIT(&ahd->platform_data->completeq);
- next_dev = ahd_linux_next_device_to_run(ahd);
- /*
- * In 2.5.X, the "done lock" is the ahd_lock.
- * Instead of dropping and re-acquiring the same
- * lock in the 2.5.X case, just hold our ahd_lock
- * the whole time. ahd_done_lock() has been
- * made a no-op for 2.5.X too.
- */
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- ahd_unlock(ahd, &flags);
-#endif
- if (next_dev)
- ahd_schedule_runq(ahd);
- if (acmd != NULL) {
- acmd = ahd_linux_run_complete_queue(ahd, acmd);
- if (acmd != NULL) {
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- ahd_lock(ahd, &flags);
-#endif
- ahd_schedule_completeq(ahd, acmd);
-#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
- ahd_unlock(ahd, &flags);
-#endif
- }
- }
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
- ahd_unlock(ahd, &flags);
-#endif
-}
-
-void
-ahd_platform_flushwork(struct ahd_softc *ahd)
-{
- struct ahd_cmd *acmd;
-
- acmd = TAILQ_FIRST(&ahd->platform_data->completeq);
- TAILQ_INIT(&ahd->platform_data->completeq);
- while (acmd != NULL)
- acmd = ahd_linux_run_complete_queue(ahd, acmd);
-}
-
-static struct ahd_linux_target*
-ahd_linux_alloc_target(struct ahd_softc *ahd, u_int channel, u_int target)
-{
- struct ahd_linux_target *targ;
- u_int target_offset;
-
- target_offset = target;
- /*
- * Never allow allocation of a target object for
- * our own SCSIID.
- */
- if (target == ahd->our_id) {
- ahd->platform_data->targets[target_offset] = NULL;
- return (NULL);
- }
-
- targ = malloc(sizeof(*targ), M_DEVBUF, M_NOWAIT);
- if (targ == NULL)
- return (NULL);
- memset(targ, 0, sizeof(*targ));
- targ->channel = channel;
- targ->target = target;
- targ->ahd = ahd;
- targ->flags = AHD_DV_REQUIRED;
- ahd->platform_data->targets[target_offset] = targ;
- return (targ);
-}
-
-static void
-ahd_linux_free_target(struct ahd_softc *ahd, struct ahd_linux_target *targ)
-{
- struct ahd_devinfo devinfo;
- struct ahd_initiator_tinfo *tinfo;
- struct ahd_tmode_tstate *tstate;
- u_int our_id;
- u_int target_offset;
- char channel;
-
- /*
- * Force a negotiation to async/narrow on any
- * future command to this device unless a bus
- * reset occurs between now and that command.
- */
- channel = 'A' + targ->channel;
- our_id = ahd->our_id;
- target_offset = targ->target;
- tinfo = ahd_fetch_transinfo(ahd, channel, our_id,
- targ->target, &tstate);
- ahd_compile_devinfo(&devinfo, our_id, targ->target, CAM_LUN_WILDCARD,
- channel, ROLE_INITIATOR);
- ahd_set_syncrate(ahd, &devinfo, 0, 0, 0,
- AHD_TRANS_GOAL, /*paused*/FALSE);
- ahd_set_width(ahd, &devinfo, MSG_EXT_WDTR_BUS_8_BIT,
- AHD_TRANS_GOAL, /*paused*/FALSE);
- ahd_update_neg_request(ahd, &devinfo, tstate, tinfo, AHD_NEG_ALWAYS);
- ahd->platform_data->targets[target_offset] = NULL;
- if (targ->inq_data != NULL)
- free(targ->inq_data, M_DEVBUF);
- if (targ->dv_buffer != NULL)
- free(targ->dv_buffer, M_DEVBUF);
- if (targ->dv_buffer1 != NULL)
- free(targ->dv_buffer1, M_DEVBUF);
- free(targ, M_DEVBUF);
-}
-
-static struct ahd_linux_device*
-ahd_linux_alloc_device(struct ahd_softc *ahd,
- struct ahd_linux_target *targ, u_int lun)
-{
- struct ahd_linux_device *dev;
-
- dev = malloc(sizeof(*dev), M_DEVBUG, M_NOWAIT);
- if (dev == NULL)
- return (NULL);
- memset(dev, 0, sizeof(*dev));
- init_timer(&dev->timer);
- TAILQ_INIT(&dev->busyq);
- dev->flags = AHD_DEV_UNCONFIGURED;
- dev->lun = lun;
- dev->target = targ;
-
- /*
- * We start out life using untagged
- * transactions of which we allow one.
- */
- dev->openings = 1;
-
- /*
- * Set maxtags to 0. This will be changed if we
- * later determine that we are dealing with
- * a tagged queuing capable device.
- */
- dev->maxtags = 0;
-
- targ->refcount++;
- targ->devices[lun] = dev;
- return (dev);
-}
-
-static void
-ahd_linux_free_device(struct ahd_softc *ahd, struct ahd_linux_device *dev)
-{
- struct ahd_linux_target *targ;
-
- del_timer(&dev->timer);
- targ = dev->target;
- targ->devices[dev->lun] = NULL;
- free(dev, M_DEVBUF);
- targ->refcount--;
- if (targ->refcount == 0
- && (targ->flags & AHD_DV_REQUIRED) == 0)
- ahd_linux_free_target(ahd, targ);
-}
-
-void
-ahd_send_async(struct ahd_softc *ahd, char channel,
- u_int target, u_int lun, ac_code code, void *arg)
-{
- switch (code) {
- case AC_TRANSFER_NEG:
- {
- char buf[80];
- struct ahd_linux_target *targ;
- struct info_str info;
- struct ahd_initiator_tinfo *tinfo;
- struct ahd_tmode_tstate *tstate;
-
- info.buffer = buf;
- info.length = sizeof(buf);
- info.offset = 0;
- info.pos = 0;
- tinfo = ahd_fetch_transinfo(ahd, channel, ahd->our_id,
- target, &tstate);
-
- /*
- * Don't bother reporting results while
- * negotiations are still pending.
- */
- 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)
- if (bootverbose == 0)
- break;
-
- /*
- * Don't bother reporting results that
- * are identical to those last reported.
- */
- targ = ahd->platform_data->targets[target];
- if (targ == NULL)
- break;
- if (tinfo->curr.period == targ->last_tinfo.period
- && tinfo->curr.width == targ->last_tinfo.width
- && tinfo->curr.offset == targ->last_tinfo.offset
- && tinfo->curr.ppr_options == targ->last_tinfo.ppr_options)
- if (bootverbose == 0)
- break;
-
- targ->last_tinfo.period = tinfo->curr.period;
- targ->last_tinfo.width = tinfo->curr.width;
- targ->last_tinfo.offset = tinfo->curr.offset;
- targ->last_tinfo.ppr_options = tinfo->curr.ppr_options;
-
- printf("(%s:%c:", ahd_name(ahd), channel);
- if (target == CAM_TARGET_WILDCARD)
- printf("*): ");
- else
- printf("%d): ", target);
- ahd_format_transinfo(&info, &tinfo->curr);
- if (info.pos < info.length)
- *info.buffer = '\0';
- else
- buf[info.length - 1] = '\0';
- printf("%s", buf);
- break;
- }
- case AC_SENT_BDR:
- {
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
- Scsi_Device *scsi_dev;
-
- /*
- * Find the SCSI device associated with this
- * request and indicate that a UA is expected.
- * XXX This should really be handled by the mid-layer.
- */
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
- list_for_each_entry(scsi_dev,
- &ahd->platform_data->host->my_devices,
- siblings) {
-#else
- for (scsi_dev = ahd->platform_data->host->host_queue;
- scsi_dev != NULL; scsi_dev = scsi_dev->next) {
-#endif
- if (channel - 'A' == scsi_dev->channel
- && target == scsi_dev->id
- && (lun == CAM_LUN_WILDCARD
- || lun == scsi_dev->lun)) {
- scsi_dev->was_reset = 1;
- scsi_dev->expecting_cc_ua = 1;
- }
- }
-#endif
- break;
- }
- case AC_BUS_RESET:
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
- if (ahd->platform_data->host != NULL) {
- scsi_report_bus_reset(ahd->platform_data->host,
- channel - 'A');
- }
-#endif
- break;
- default:
- panic("ahd_send_async: Unexpected async event");
- }
-}
-
-/*
- * Calls the higher level scsi done function and frees the scb.
- */
-void
-ahd_done(struct ahd_softc *ahd, struct scb *scb)
-{
- Scsi_Cmnd *cmd;
- struct ahd_linux_device *dev;
-
- LIST_REMOVE(scb, pending_links);
-
- if ((scb->flags & SCB_ACTIVE) == 0) {
- printf("SCB %d done'd twice\n", scb->hscb->tag);
- ahd_dump_card_state(ahd);
- panic("Stopping for safety");
- }
- cmd = scb->io_ctx;
- dev = scb->platform_data->dev;
- dev->active--;
- dev->openings++;
- if ((cmd->result & (CAM_DEV_QFRZN << 16)) != 0) {
- cmd->result &= ~(CAM_DEV_QFRZN << 16);
- dev->qfrozen--;
- }
- ahd_linux_unmap_scb(ahd, scb);
-
- /*
- * Guard against stale sense data.
- * The Linux mid-layer assumes that sense
- * was retrieved anytime the first byte of
- * the sense buffer looks "sane".
- */
- cmd->sense_buffer[0] = 0;
- if (ahd_get_transaction_status(scb) == CAM_REQ_INPROG) {
- uint32_t amount_xferred;
-
- amount_xferred =
- ahd_get_transfer_length(scb) - ahd_get_residual(scb);
- if ((scb->flags & SCB_TRANSMISSION_ERROR) != 0) {
-#ifdef AHD_DEBUG
- if ((ahd_debug & AHD_SHOW_MISC) != 0) {
- ahd_print_path(ahd, scb);
- printf("Set CAM_UNCOR_PARITY\n");
- }
-#endif
- ahd_set_transaction_status(scb, CAM_UNCOR_PARITY);
- } else if (amount_xferred < scb->io_ctx->underflow) {
- printf("Saw underflow (%ld of %ld bytes). "
- "Treated as error\n",
- ahd_get_residual(scb),
- ahd_get_transfer_length(scb));
- ahd_set_transaction_status(scb, CAM_DATA_RUN_ERR);
- } else {
- ahd_set_transaction_status(scb, CAM_REQ_CMP);
- }
- } else if (ahd_get_transaction_status(scb) == CAM_SCSI_STATUS_ERROR) {
- ahd_linux_handle_scsi_status(ahd, dev, scb);
- } else if (ahd_get_transaction_status(scb) == CAM_SEL_TIMEOUT) {
- dev->flags |= AHD_DEV_UNCONFIGURED;
- if (AHD_DV_CMD(cmd) == FALSE)
- dev->target->flags &= ~AHD_DV_REQUIRED;
- }
- /*
- * Start DV for devices that require it assuming the first command
- * sent does not result in a selection timeout.
- */
- if (ahd_get_transaction_status(scb) != CAM_SEL_TIMEOUT
- && (dev->target->flags & AHD_DV_REQUIRED) != 0)
- ahd_linux_start_dv(ahd);
-
- if (dev->openings == 1
- && ahd_get_transaction_status(scb) == CAM_REQ_CMP
- && ahd_get_scsi_status(scb) != SCSI_STATUS_QUEUE_FULL)
- dev->tag_success_count++;
- /*
- * Some devices deal with temporary internal resource
- * shortages by returning queue full. When the queue
- * full occurrs, we throttle back. Slowly try to get
- * back to our previous queue depth.
- */
- if ((dev->openings + dev->active) < dev->maxtags
- && dev->tag_success_count > AHD_TAG_SUCCESS_INTERVAL) {
- dev->tag_success_count = 0;
- dev->openings++;
- }
-
- if (dev->active == 0)
- dev->commands_since_idle_or_otag = 0;
-
- if (TAILQ_EMPTY(&dev->busyq)) {
- if ((dev->flags & AHD_DEV_UNCONFIGURED) != 0
- && dev->active == 0)
- ahd_linux_free_device(ahd, dev);
- } else if ((dev->flags & AHD_DEV_ON_RUN_LIST) == 0) {
- TAILQ_INSERT_TAIL(&ahd->platform_data->device_runq, dev, links);
- dev->flags |= AHD_DEV_ON_RUN_LIST;
- }
-
- if ((scb->flags & SCB_RECOVERY_SCB) != 0) {
- printf("Recovery SCB completes\n");
- if (ahd_get_transaction_status(scb) == CAM_BDR_SENT
- || ahd_get_transaction_status(scb) == CAM_REQ_ABORTED)
- ahd_set_transaction_status(scb, CAM_CMD_TIMEOUT);
- if ((ahd->platform_data->flags & AHD_UP_EH_SEMAPHORE) != 0) {
- ahd->platform_data->flags &= ~AHD_UP_EH_SEMAPHORE;
- up(&ahd->platform_data->eh_sem);
- }
- }
-
- ahd_free_scb(ahd, scb);
- ahd_linux_queue_cmd_complete(ahd, cmd);
-
- if ((ahd->platform_data->flags & AHD_DV_WAIT_SIMQ_EMPTY) != 0
- && LIST_FIRST(&ahd->pending_scbs) == NULL) {
- ahd->platform_data->flags &= ~AHD_DV_WAIT_SIMQ_EMPTY;
- up(&ahd->platform_data->dv_sem);
- }
-}
-
-static void
-ahd_linux_handle_scsi_status(struct ahd_softc *ahd,
- struct ahd_linux_device *dev, struct scb *scb)
-{
- struct ahd_devinfo devinfo;
-
- ahd_compile_devinfo(&devinfo,
- ahd->our_id,
- dev->target->target, dev->lun,
- dev->target->channel == 0 ? 'A' : 'B',
- ROLE_INITIATOR);
-
- /*
- * We don't currently trust the mid-layer to
- * properly deal with queue full or busy. So,
- * when one occurs, we tell the mid-layer to
- * unconditionally requeue the command to us
- * so that we can retry it ourselves. We also
- * implement our own throttling mechanism so
- * we don't clobber the device with too many
- * commands.
- */
- switch (ahd_get_scsi_status(scb)) {
- default:
- break;
- case SCSI_STATUS_CHECK_COND:
- case SCSI_STATUS_CMD_TERMINATED:
- {
- Scsi_Cmnd *cmd;
-
- /*
- * Copy sense information to the OS's cmd
- * structure if it is available.
- */
- cmd = scb->io_ctx;
- if ((scb->flags & (SCB_SENSE|SCB_PKT_SENSE)) != 0) {
- struct scsi_status_iu_header *siu;
- u_int sense_size;
- u_int sense_offset;
-
- if (scb->flags & SCB_SENSE) {
- sense_size = MIN(sizeof(struct scsi_sense_data)
- - ahd_get_sense_residual(scb),
- sizeof(cmd->sense_buffer));
- sense_offset = 0;
- } else {
- /*
- * Copy only the sense data into the provided
- * buffer.
- */
- siu = (struct scsi_status_iu_header *)
- scb->sense_data;
- sense_size = MIN(scsi_4btoul(siu->sense_length),
- sizeof(cmd->sense_buffer));
- sense_offset = SIU_SENSE_OFFSET(siu);
- }
-
- memset(cmd->sense_buffer, 0, sizeof(cmd->sense_buffer));
- memcpy(cmd->sense_buffer,
- ahd_get_sense_buf(ahd, scb)
- + sense_offset, sense_size);
- cmd->result |= (DRIVER_SENSE << 24);
-
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_SENSE) {
- int i;
-
- printf("Copied %d bytes of sense data at %d:",
- sense_size, sense_offset);
- for (i = 0; i < sense_size; i++) {
- if ((i & 0xF) == 0)
- printf("\n");
- printf("0x%x ", cmd->sense_buffer[i]);
- }
- printf("\n");
- }
-#endif
- }
- break;
- }
- case SCSI_STATUS_QUEUE_FULL:
- {
- /*
- * By the time the core driver has returned this
- * command, all other commands that were queued
- * to us but not the device have been returned.
- * This ensures that dev->active is equal to
- * the number of commands actually queued to
- * the device.
- */
- dev->tag_success_count = 0;
- if (dev->active != 0) {
- /*
- * Drop our opening count to the number
- * of commands currently outstanding.
- */
- dev->openings = 0;
-#ifdef AHD_DEBUG
- if (ahd_debug & AHD_SHOW_QFULL) {
- ahd_print_path(ahd, scb);
- printf("Dropping tag count to %d\n",
- dev->active);
- }
-#endif
- if (dev->active == dev->tags_on_last_queuefull) {
-
- dev->last_queuefull_same_count++;
- /*
- * If we repeatedly see a queue full
- * at the same queue depth, this
- * device has a fixed number of tag
- * slots. Lock in this tag depth
- * so we stop seeing queue fulls from
- * this device.
- */
- if (dev->last_queuefull_same_count
- == AHD_LOCK_TAGS_COUNT) {
- dev->maxtags = dev->active;
- ahd_print_path(ahd, scb);
- printf("Locking max tag count at %d\n",
- dev->active);
- }
- } else {
- dev->tags_on_last_queuefull = dev->active;
- dev->last_queuefull_same_count = 0;
- }
- ahd_set_transaction_status(scb, CAM_REQUEUE_REQ);
- ahd_set_scsi_status(scb, SCSI_STATUS_OK);
- ahd_set_tags(ahd, &devinfo,
- (dev->flags & AHD_DEV_Q_BASIC)
- ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED);
- break;
- }
- /*
- * Drop down to a single opening, and treat this
- * as if the target returned BUSY SCSI status.
- */
- dev->openings = 1;
- ahd_set_tags(ahd, &devinfo,
- (dev->flags & AHD_DEV_Q_BASIC)
- ? AHD_QUEUE_BASIC : AHD_QUEUE_TAGGED);
- ahd_set_scsi_status(scb, SCSI_STATUS_BUSY);
- /* FALLTHROUGH */
- }
- case SCSI_STATUS_BUSY:
- /*
- * Set a short timer to defer sending commands for
- * a bit since Linux will not delay in this case.
- */
- if ((dev->flags & AHD_DEV_TIMER_ACTIVE) != 0) {
- printf("%s:%c:%d: Device Timer still active during "
- "busy processing\n", ahd_name(ahd),
- dev->target->channel, dev->target->target);
- break;
- }
- dev->flags |= AHD_DEV_TIMER_ACTIVE;
- dev->qfrozen++;
- init_timer(&dev->timer);
- dev->timer.data = (u_long)dev;
- dev->timer.expires = jiffies + (HZ/2);
- dev->timer.function = ahd_linux_dev_timed_unfreeze;
- add_timer(&dev->timer);
- break;
- }
-}
-
-static void
-ahd_linux_queue_cmd_complete(struct ahd_softc *ahd, Scsi_Cmnd *cmd)
-{
- /*
- * Typically, the complete queue has very few entries
- * queued to it before the queue is emptied by
- * ahd_linux_run_complete_queue, so sorting the entries
- * by generation number should be inexpensive.
- * We perform the sort so that commands that complete
- * with an error are retuned in the order origionally
- * queued to the controller so that any subsequent retries
- * are performed in order. The underlying ahd routines do
- * not guarantee the order that aborted commands will be
- * returned to us.
- */
- struct ahd_completeq *completeq;
- struct ahd_cmd *list_cmd;
- struct ahd_cmd *acmd;
-
- /*
- * Map CAM error codes into Linux Error codes. We
- * avoid the conversion so that the DV code has the
- * full error information available when making
- * state change decisions.
- */
- if (AHD_DV_CMD(cmd) == FALSE) {
- uint32_t status;
- u_int new_status;
-
- status = ahd_cmd_get_transaction_status(cmd);
- if (status != CAM_REQ_CMP) {
- struct ahd_linux_device *dev;
- struct ahd_devinfo devinfo;
- cam_status cam_status;
- uint32_t action;
- u_int scsi_status;
-
- dev = ahd_linux_get_device(ahd, cmd->channel,
- cmd->device->id,
- cmd->device->lun,
- /*alloc*/FALSE);
-
- if (dev == NULL)
- goto no_fallback;
-
- ahd_compile_devinfo(&devinfo,
- ahd->our_id,
- dev->target->target, dev->lun,
- dev->target->channel == 0 ? 'A':'B',
- ROLE_INITIATOR);
-
- scsi_status = ahd_cmd_get_scsi_status(cmd);
- cam_status = ahd_cmd_get_transaction_status(cmd);
- action = aic_error_action(cmd, dev->target->inq_data,
- cam_status, scsi_status);
- if ((action & SSQ_FALLBACK) != 0) {
-
- /* Update stats */
- dev->target->errors_detected++;
- if (dev->target->cmds_since_error == 0)
- dev->target->cmds_since_error++;
- else {
- dev->target->cmds_since_error = 0;
- ahd_linux_fallback(ahd, &devinfo);
- }
- }
- }
-no_fallback:
- switch (status) {
- case CAM_REQ_INPROG:
- case CAM_REQ_CMP:
- case CAM_SCSI_STATUS_ERROR:
- new_status = DID_OK;
- break;
- case CAM_REQ_ABORTED:
- new_status = DID_ABORT;
- break;
- case CAM_BUSY:
- new_status = DID_BUS_BUSY;
- break;
- case CAM_REQ_INVALID:
- case CAM_PATH_INVALID:
- new_status = DID_BAD_TARGET;
- break;
- case CAM_SEL_TIMEOUT:
- new_status = DID_NO_CONNECT;
- break;
- case CAM_SCSI_BUS_RESET:
- case CAM_BDR_SENT:
- new_status = DID_RESET;
- break;
- case CAM_UNCOR_PARITY:
- new_status = DID_PARITY;
- break;
- case CAM_CMD_TIMEOUT:
- new_status = DID_TIME_OUT;
- break;
- case CAM_UA_ABORT:
- case CAM_REQ_CMP_ERR:
- case CAM_AUTOSENSE_FAIL:
- case CAM_NO_HBA:
- case CAM_DATA_RUN_ERR:
- case CAM_UNEXP_BUSFREE:
- case CAM_SEQUENCE_FAIL:
- case CAM_CCB_LEN_ERR:
- case CAM_PROVIDE_FAIL:
- case CAM_REQ_TERMIO:
- case CAM_UNREC_HBA_ERROR:
- case CAM_REQ_TOO_BIG:
- new_status = DID_ERROR;
- break;
- case CAM_REQUEUE_REQ:
- /*
- * If we want the request requeued, make sure there
- * are sufficent retries. In the old scsi error code,
- * we used to be able to specify a result code that
- * bypassed the retry count. Now we must use this
- * hack. We also "fake" a check condition with
- * a sense code of ABORTED COMMAND. This seems to
- * evoke a retry even if this command is being sent
- * via the eh thread. Ick! Ick! Ick!
- */
- if (cmd->retries > 0)
- cmd->retries--;
- new_status = DID_OK;
- ahd_cmd_set_scsi_status(cmd, SCSI_STATUS_CHECK_COND);
- cmd->result |= (DRIVER_SENSE << 24);
- memset(cmd->sense_buffer, 0,
- sizeof(cmd->sense_buffer));
- cmd->sense_buffer[0] = SSD_ERRCODE_VALID
- | SSD_CURRENT_ERROR;
- cmd->sense_buffer[2] = SSD_KEY_ABORTED_COMMAND;
- break;
- default:
- /* We should never get here */
- new_status = DID_ERROR;
- break;
- }
-
- ahd_cmd_set_transaction_status(cmd, new_status);
- }
-
- completeq = &ahd->platform_data->completeq;
- list_cmd = TAILQ_FIRST(completeq);
- acmd = (struct ahd_cmd *)cmd;
- while (list_cmd != NULL
- && acmd_scsi_cmd(list_cmd).serial_number
- < acmd_scsi_cmd(acmd).serial_number)
- list_cmd = TAILQ_NEXT(list_cmd, acmd_links.tqe);
- if (list_cmd != NULL)
- TAILQ_INSERT_BEFORE(list_cmd, acmd, acmd_links.tqe);
- else
- TAILQ_INSERT_TAIL(completeq, acmd, acmd_links.tqe);
-}
-
-static void
-ahd_linux_filter_inquiry(struct ahd_softc *ahd, struct ahd_devinfo *devinfo)
-{
- struct scsi_inquiry_data *sid;
- struct ahd_initiator_tinfo *tinfo;
- struct ahd_transinfo *user;
- struct ahd_transinfo *goal;
- struct ahd_transinfo *curr;
- struct ahd_tmode_tstate *tstate;
- struct ahd_linux_device *dev;
- u_int width;
- u_int period;
- u_int offset;
- u_int ppr_options;
- u_int trans_version;
- u_int prot_version;
- static int warned_user;
-
- /*
- * Determine if this lun actually exists. If so,
- * hold on to its corresponding device structure.
- * If not, make sure we release the device and
- * don't bother processing the rest of this inquiry
- * command.
- */
- dev = ahd_linux_get_device(ahd, devinfo->channel - 'A',
- devinfo->target, devinfo->lun,
- /*alloc*/TRUE);
-
- sid = (struct scsi_inquiry_data *)dev->target->inq_data;
- if (SID_QUAL(sid) == SID_QUAL_LU_CONNECTED) {
-
- dev->flags &= ~AHD_DEV_UNCONFIGURED;
- } else {
- dev->flags |= AHD_DEV_UNCONFIGURED;
- return;
- }
-
- /*
- * Update our notion of this device's transfer
- * negotiation capabilities.
- */
- tinfo = ahd_fetch_transinfo(ahd, devinfo->channel,
- devinfo->our_scsiid,
- devinfo->target, &tstate);
- user = &tinfo->user;
- goal = &tinfo->goal;
- curr = &tinfo->curr;
- width = user->width;
- period = user->period;
- offset = user->offset;
- ppr_options = user->ppr_options;
- trans_version = user->transport_version;
- prot_version = MIN(user->protocol_version, SID_ANSI_REV(sid));
-
- /*
- * If we have read streaming info for this controller,
- * apply it to this target.
- */
- if (warned_user == 0
- && ahd->unit >= NUM_ELEMENTS(aic79xx_rd_strm_info)) {
-
- printf("aic79xx: WARNING, insufficient rd_strm instances "
- "for installed controllers. Using defaults\n");
- printf("aic79xx: Please update the aic79xx_rd_strm_info "
- "array in the aic79xx_osm.c source file.\n");
- warned_user++;
- } else {
- uint16_t rd_strm_mask;
-
- rd_strm_mask = aic79xx_rd_strm_info[ahd->unit];
- if ((rd_strm_mask & devinfo->target_mask) == 0)
- ppr_options &= ~MSG_EXT_PPR_RD_STRM;
- }
-
- /*
- * Only attempt SPI3/4 once we've verified that
- * the device claims to support SPI3/4 features.
- */
- if (prot_version < SCSI_REV_2)
- trans_version = SID_ANSI_REV(sid);
- else
- trans_version = SCSI_REV_2;
-
- if ((sid->flags & SID_WBus16) == 0)
- width = MSG_EXT_WDTR_BUS_8_BIT;
- if ((sid->flags & SID_Sync) == 0) {
- period = 0;
- offset = 0;
- ppr_options = 0;
- }
- if ((sid->spi3data & SID_SPI_QAS) == 0)
- ppr_options &= ~MSG_EXT_PPR_QAS_REQ;
- if ((sid->spi3data & SID_SPI_CLOCK_DT) == 0)
- ppr_options &= MSG_EXT_PPR_QAS_REQ;
- if ((sid->spi3data & SID_SPI_IUS) == 0)
- ppr_options &= (MSG_EXT_PPR_DT_REQ
- | MSG_EXT_PPR_QAS_REQ);
-
- if (prot_version > SCSI_REV_2
- && ppr_options != 0)
- trans_version = user->transport_version;
-
- ahd_validate_width(ahd, /*tinfo limit*/NULL, &width, ROLE_UNKNOWN);
- ahd_find_syncrate(ahd, &period, &ppr_options, AHD_SYNCRATE_MAX);
- ahd_validate_offset(ahd, /*tinfo limit*/NULL, period,
- &offset, width, ROLE_UNKNOWN);
- if (offset == 0 || period == 0) {
- period = 0;
- offset = 0;
- ppr_options = 0;
- }
- /* Apply our filtered user settings. */
- curr->transport_version = trans_version;
- curr->protocol_version = prot_version;
- ahd_set_width(ahd, devinfo, width, AHD_TRANS_GOAL, /*paused*/FALSE);
- ahd_set_syncrate(ahd, devinfo, period, offset, ppr_options,
- AHD_TRANS_GOAL, /*paused*/FALSE);
-}
-
-void
-ahd_freeze_simq(struct ahd_softc *ahd)
-{
- ahd->platform_data->qfrozen++;
- if (ahd->platform_data->qfrozen == 1) {
- scsi_block_requests(ahd->platform_data->host);
- ahd_platform_abort_scbs(ahd, CAM_TARGET_WILDCARD, ALL_CHANNELS,
- CAM_LUN_WILDCARD, SCB_LIST_NULL,
- ROLE_INITIATOR, CAM_REQUEUE_REQ);
- }
-}
-
-void
-ahd_release_simq(struct ahd_softc *ahd)
-{
- u_long s;
- int unblock_reqs;
-
- unblock_reqs = 0;
- ahd_lock(ahd, &s);
- if (ahd->platform_data->qfrozen > 0)
- ahd->platform_data->qfrozen--;
- if (ahd->platform_data->qfrozen == 0) {
- unblock_reqs = 1;
- }
- if (AHD_DV_SIMQ_FROZEN(ahd)
- && ((ahd->platform_data->flags & AHD_DV_WAIT_SIMQ_RELEASE) != 0)) {
- ahd->platform_data->flags &= ~AHD_DV_WAIT_SIMQ_RELEASE;
- up(&ahd->platform_data->dv_sem);
- }
- ahd_unlock(ahd, &s);
- /*
- * There is still a race here. The mid-layer
- * should keep its own freeze count and use
- * a bottom half handler to run the queues
- * so we can unblock with our own lock held.
- */
- if (unblock_reqs)
- scsi_unblock_requests(ahd->platform_data->host);
-
- ahd_schedule_runq(ahd);
-}
-
-static void
-ahd_linux_sem_timeout(u_long arg)
-{
- struct ahd_softc *ahd;
- u_long s;
-
- ahd = (struct ahd_softc *)arg;
- ahd_lock(ahd, &s);
- if ((ahd->platform_data->flags & AHD_UP_EH_SEMAPHORE) != 0) {
- ahd->platform_data->flags &= ~AHD_UP_EH_SEMAPHORE;
- up(&ahd->platform_data->eh_sem);
- }
- ahd_unlock(ahd, &s);
-}
-
-static void
-ahd_linux_dev_timed_unfreeze(u_long arg)
-{
- struct ahd_linux_device *dev;
- struct ahd_softc *ahd;
- u_long s;
-
- dev = (struct ahd_linux_device *)arg;
- ahd = dev->target->ahd;
- ahd_lock(ahd, &s);
- dev->flags &= ~AHD_DEV_TIMER_ACTIVE;
- if (dev->qfrozen > 0)
- dev->qfrozen--;
- if (dev->qfrozen == 0
- && (dev->flags & AHD_DEV_ON_RUN_LIST) == 0)
- ahd_linux_run_device_queue(ahd, dev);
- ahd_unlock(ahd, &s);
-}
-
-void
-ahd_platform_dump_card_state(struct ahd_softc *ahd)
-{
- struct ahd_linux_device *dev;
- int target;
- int maxtarget;
- int lun;
- int i;
-
- maxtarget = (ahd->features & AHD_WIDE) ? 15 : 7;
- for (target = 0; target <=maxtarget; target++) {
-
- for (lun = 0; lun < AHD_NUM_LUNS; lun++) {
- struct ahd_cmd *acmd;
-
- dev = ahd_linux_get_device(ahd, 0, target,
- lun, /*alloc*/FALSE);
- if (dev == NULL)
- continue;
-
- printf("DevQ(%d:%d:%d): ", 0, target, lun);
- i = 0;
- TAILQ_FOREACH(acmd, &dev->busyq, acmd_links.tqe) {
- if (i++ > AHD_SCB_MAX)
- break;
- }
- printf("%d waiting\n", i);
- }
- }
-}
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)