swift.h
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:3k
- /* 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 */
- extern __inline__ void swift_inv_insn_tag(unsigned long addr)
- {
- __asm__ __volatile__("sta %%g0, [%0] %1nt" : :
- "r" (addr), "i" (ASI_M_TXTC_TAG));
- }
- /* Bits [12:4] select one of 512 data cache tags */
- extern __inline__ void swift_inv_data_tag(unsigned long addr)
- {
- __asm__ __volatile__("sta %%g0, [%0] %1nt" : :
- "r" (addr), "i" (ASI_M_DATAC_TAG));
- }
- extern __inline__ void swift_flush_dcache(void)
- {
- unsigned long addr;
- for(addr = 0; addr < 0x2000; addr += 0x10)
- swift_inv_data_tag(addr);
- }
- extern __inline__ void swift_flush_icache(void)
- {
- unsigned long addr;
- for(addr = 0; addr < 0x4000; addr += 0x20)
- swift_inv_insn_tag(addr);
- }
- extern __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. */
- extern __inline__ void swift_flush_page(unsigned long page)
- {
- __asm__ __volatile__("sta %%g0, [%0] %1nt" : :
- "r" (page), "i" (ASI_M_FLUSH_PAGE));
- }
- extern __inline__ void swift_flush_segment(unsigned long addr)
- {
- __asm__ __volatile__("sta %%g0, [%0] %1nt" : :
- "r" (addr), "i" (ASI_M_FLUSH_SEG));
- }
- extern __inline__ void swift_flush_region(unsigned long addr)
- {
- __asm__ __volatile__("sta %%g0, [%0] %1nt" : :
- "r" (addr), "i" (ASI_M_FLUSH_REGION));
- }
- extern __inline__ void swift_flush_context(void)
- {
- __asm__ __volatile__("sta %%g0, [%%g0] %0nt" : :
- "i" (ASI_M_FLUSH_CTX));
- }
- #endif /* !(_SPARC_SWIFT_H) */