From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- include/asm-sparc/swift.h | 106 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 106 insertions(+) create mode 100644 include/asm-sparc/swift.h (limited to 'include/asm-sparc/swift.h') diff --git a/include/asm-sparc/swift.h b/include/asm-sparc/swift.h new file mode 100644 index 000000000000..e535061bf755 --- /dev/null +++ b/include/asm-sparc/swift.h @@ -0,0 +1,106 @@ +/* swift.h: Specific definitions for the _broken_ Swift SRMMU + * MMU module. + * + * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu) + */ + +#ifndef _SPARC_SWIFT_H +#define _SPARC_SWIFT_H + +/* Swift is so brain damaged, here is the mmu control register. */ +#define SWIFT_ST 0x00800000 /* SW tablewalk enable */ +#define SWIFT_WP 0x00400000 /* Watchpoint enable */ + +/* Branch folding (buggy, disable on production systems!) */ +#define SWIFT_BF 0x00200000 +#define SWIFT_PMC 0x00180000 /* Page mode control */ +#define SWIFT_PE 0x00040000 /* Parity enable */ +#define SWIFT_PC 0x00020000 /* Parity control */ +#define SWIFT_AP 0x00010000 /* Graphics page mode control (TCX/SX) */ +#define SWIFT_AC 0x00008000 /* Alternate Cacheability (see viking.h) */ +#define SWIFT_BM 0x00004000 /* Boot mode */ +#define SWIFT_RC 0x00003c00 /* DRAM refresh control */ +#define SWIFT_IE 0x00000200 /* Instruction cache enable */ +#define SWIFT_DE 0x00000100 /* Data cache enable */ +#define SWIFT_SA 0x00000080 /* Store Allocate */ +#define SWIFT_NF 0x00000002 /* No fault mode */ +#define SWIFT_EN 0x00000001 /* MMU enable */ + +/* Bits [13:5] select one of 512 instruction cache tags */ +static inline void swift_inv_insn_tag(unsigned long addr) +{ + __asm__ __volatile__("sta %%g0, [%0] %1\n\t" + : /* no outputs */ + : "r" (addr), "i" (ASI_M_TXTC_TAG) + : "memory"); +} + +/* Bits [12:4] select one of 512 data cache tags */ +static inline void swift_inv_data_tag(unsigned long addr) +{ + __asm__ __volatile__("sta %%g0, [%0] %1\n\t" + : /* no outputs */ + : "r" (addr), "i" (ASI_M_DATAC_TAG) + : "memory"); +} + +static inline void swift_flush_dcache(void) +{ + unsigned long addr; + + for (addr = 0; addr < 0x2000; addr += 0x10) + swift_inv_data_tag(addr); +} + +static inline void swift_flush_icache(void) +{ + unsigned long addr; + + for (addr = 0; addr < 0x4000; addr += 0x20) + swift_inv_insn_tag(addr); +} + +static inline void swift_idflash_clear(void) +{ + unsigned long addr; + + for (addr = 0; addr < 0x2000; addr += 0x10) { + swift_inv_insn_tag(addr<<1); + swift_inv_data_tag(addr); + } +} + +/* Swift is so broken, it isn't even safe to use the following. */ +static inline void swift_flush_page(unsigned long page) +{ + __asm__ __volatile__("sta %%g0, [%0] %1\n\t" + : /* no outputs */ + : "r" (page), "i" (ASI_M_FLUSH_PAGE) + : "memory"); +} + +static inline void swift_flush_segment(unsigned long addr) +{ + __asm__ __volatile__("sta %%g0, [%0] %1\n\t" + : /* no outputs */ + : "r" (addr), "i" (ASI_M_FLUSH_SEG) + : "memory"); +} + +static inline void swift_flush_region(unsigned long addr) +{ + __asm__ __volatile__("sta %%g0, [%0] %1\n\t" + : /* no outputs */ + : "r" (addr), "i" (ASI_M_FLUSH_REGION) + : "memory"); +} + +static inline void swift_flush_context(void) +{ + __asm__ __volatile__("sta %%g0, [%%g0] %0\n\t" + : /* no outputs */ + : "i" (ASI_M_FLUSH_CTX) + : "memory"); +} + +#endif /* !(_SPARC_SWIFT_H) */ -- cgit v1.2.2