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!
diff --git a/include/asm-sparc/swift.h b/include/asm-sparc/swift.h
new file mode 100644
index 0000000..e535061
--- /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) */
