patch-1.3.4 linux/include/asm-sparc/mbus.h

• Lines: 100
• Date: Sun Jun 25 05:05:32 1995
• Orig file: v1.3.3/linux/include/asm-sparc/mbus.h
• Orig date: Thu Jan 1 02:00:00 1970

diff -u --recursive --new-file v1.3.3/linux/include/asm-sparc/mbus.h linux/include/asm-sparc/mbus.h
@@ -0,0 +1,99 @@
+/* mbus.h:  Various defines for MBUS modules.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#ifndef _SPARC_MBUS_H
+#define _SPARC_MBUS_H
+
+#include <asm/ross.h>    /* HyperSparc stuff */
+#include <asm/cypress.h> /* Cypress Chips */
+#include <asm/viking.h>  /* Ugh, bug city... */
+
+enum mbus_module {
+	HyperSparc        = 0,
+	Cypress           = 1,
+	Cypress_vE        = 2,
+	Cypress_vD        = 3,
+	Swift_ok          = 4,
+	Swift_bad_c       = 5,
+	Swift_lots_o_bugs = 6,
+	Tsunami           = 7,
+	Viking_12         = 8,
+	Viking_2x         = 9,
+	Viking_30         = 10,
+	Viking_35         = 11,
+	Viking_new        = 12,
+	SRMMU_INVAL_MOD   = 13,
+};
+
+extern enum mbus_module srmmu_modtype;
+extern unsigned int viking_rev, swift_rev, cypress_rev;
+
+/* HW Mbus module bugs we have to deal with */
+#define HWBUG_COPYBACK_BROKEN        0x00000001
+#define HWBUG_ASIFLUSH_BROKEN        0x00000002
+#define HWBUG_VACFLUSH_BITROT        0x00000004
+#define HWBUG_KERN_ACCBROKEN         0x00000008
+#define HWBUG_KERN_CBITBROKEN        0x00000010
+#define HWBUG_MODIFIED_BITROT        0x00000020
+#define HWBUG_PC_BADFAULT_ADDR       0x00000040
+#define HWBUG_SUPERSCALAR_BAD        0x00000080
+#define HWBUG_PACINIT_BITROT         0x00000100
+
+extern unsigned int hwbug_bitmask;
+
+/* First the module type values. To find out which you have, just load
+ * the mmu control register from ASI_M_MMUREG alternate adress space and
+ * shift the value right 28 bits.
+ */
+/* IMPL field means the company which produced the chip. */
+#define MBUS_VIKING        0x4   /* bleech, Texas Instruments Module */
+#define MBUS_LSI           0x3   /* LSI Logics */
+#define MBUS_ROSS          0x1   /* Ross is nice */
+#define MBUS_FMI           0x0   /* Fujitsu Microelectronics/Swift */
+
+/* Ross Module versions */
+#define ROSS_604_REV_CDE        0x0   /* revisions c, d, and e */
+#define ROSS_604_REV_F          0x1   /* revision f */
+#define ROSS_605                0xf   /* revision a, a.1, and a.2 */
+#define ROSS_605_REV_B          0xe   /* revision b */
+
+/* TI Viking Module versions */
+#define VIKING_REV_12           0x1   /* Version 1.2 or SPARCclassic's CPU */
+#define VIKING_REV_2            0x2   /* Version 2.1, 2.2, 2.3, and 2.4 */
+#define VIKING_REV_30           0x3   /* Version 3.0 */
+#define VIKING_REV_35           0x4   /* Version 3.5 */
+
+/* LSI Logics. */
+#define LSI_L64815		0x0
+
+/* Fujitsu */
+#define FMI_AURORA		0x4   /* MB8690x, a Swift module... */
+
+/* For multiprocessor support we need to be able to obtain the CPU id and
+ * the MBUS Module id.
+ */
+
+/* The CPU ID is encoded in the trap base register, 20 bits to the left of
+ * bit zero, with 2 bits being significant.
+ */
+#define TBR_ID_SHIFT            0x20
+
+extern inline int get_cpuid(void)
+{
+	register int retval;
+	__asm__ __volatile__("rd %%tbr, %0\n\t"
+			     "srl %0, %1, %0\n\t" :
+			     "=r" (retval) :
+			     "i" (TBR_ID_SHIFT));
+	return (retval & 3);
+}
+
+extern inline int get_modid(void)
+{
+	return (get_cpuid() | 0x8);
+}
+
+	
+#endif /* !(_SPARC_MBUS_H) */