1 files changed, 79 insertions, 0 deletions

diff --git a/arch/sparc/include/asm/cypress.h b/arch/sparc/include/asm/cypress.h
new file mode 100644
index 000000000000..95e9772ea394
--- /dev/null
+++ b/arch/sparc/include/asm/cypress.h
@@ -0,0 +1,79 @@
+/*
+ * cypress.h: Cypress module specific definitions and defines.
+ *
+ * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ */
+
+#ifndef _SPARC_CYPRESS_H
+#define _SPARC_CYPRESS_H
+
+/* Cypress chips have %psr 'impl' of '0001' and 'vers' of '0001'. */
+
+/* The MMU control register fields on the Sparc Cypress 604/605 MMU's.
+ *
+ * ---------------------------------------------------------------
+ * |implvers| MCA | MCM |MV| MID |BM| C|RSV|MR|CM|CL|CE|RSV|NF|ME|
+ * ---------------------------------------------------------------
+ *  31    24 23-22 21-20 19 18-15 14 13  12 11 10  9  8 7-2  1  0
+ *
+ * MCA: MultiChip Access -- Used for configuration of multiple
+ *      CY7C604/605 cache units.
+ * MCM: MultiChip Mask -- Again, for multiple cache unit config.
+ * MV: MultiChip Valid -- Indicates MCM and MCA have valid settings.
+ * MID: ModuleID -- Unique processor ID for MBus transactions. (605 only)
+ * BM: Boot Mode -- 0 = not in boot mode, 1 = in boot mode
+ * C: Cacheable -- Indicates whether accesses are cacheable while
+ *    the MMU is off.  0=no 1=yes
+ * MR: MemoryReflection -- Indicates whether the bus attached to the
+ *     MBus supports memory reflection. 0=no 1=yes (605 only)
+ * CM: CacheMode -- Indicates whether the cache is operating in write
+ *     through or copy-back mode. 0=write-through 1=copy-back
+ * CL: CacheLock -- Indicates if the entire cache is locked or not.
+ *     0=not-locked 1=locked  (604 only)
+ * CE: CacheEnable -- Is the virtual cache on? 0=no 1=yes
+ * NF: NoFault -- Do faults generate traps? 0=yes 1=no
+ * ME: MmuEnable -- Is the MMU doing translations? 0=no 1=yes
+ */
+
+#define CYPRESS_MCA       0x00c00000
+#define CYPRESS_MCM       0x00300000
+#define CYPRESS_MVALID    0x00080000
+#define CYPRESS_MIDMASK   0x00078000   /* Only on 605 */
+#define CYPRESS_BMODE     0x00004000
+#define CYPRESS_ACENABLE  0x00002000
+#define CYPRESS_MRFLCT    0x00000800   /* Only on 605 */
+#define CYPRESS_CMODE     0x00000400
+#define CYPRESS_CLOCK     0x00000200   /* Only on 604 */
+#define CYPRESS_CENABLE   0x00000100
+#define CYPRESS_NFAULT    0x00000002
+#define CYPRESS_MENABLE   0x00000001
+
+static inline void cypress_flush_page(unsigned long page)
+{
+        __asm__ __volatile__("sta %%g0, [%0] %1\n\t" : :
+                             "r" (page), "i" (ASI_M_FLUSH_PAGE));
+}
+
+static inline void cypress_flush_segment(unsigned long addr)
+{
+        __asm__ __volatile__("sta %%g0, [%0] %1\n\t" : :
+                             "r" (addr), "i" (ASI_M_FLUSH_SEG));
+}
+
+static inline void cypress_flush_region(unsigned long addr)
+{
+        __asm__ __volatile__("sta %%g0, [%0] %1\n\t" : :
+                             "r" (addr), "i" (ASI_M_FLUSH_REGION));
+}
+
+static inline void cypress_flush_context(void)
+{
+        __asm__ __volatile__("sta %%g0, [%%g0] %0\n\t" : :
+                             "i" (ASI_M_FLUSH_CTX));
+}
+
+/* XXX Displacement flushes for buggy chips and initial testing
+ * XXX go here.
+ */
+
+#endif /* !(_SPARC_CYPRESS_H) */