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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /arch/parisc/include/asm/cache.h
Initial import
Diffstat (limited to 'arch/parisc/include/asm/cache.h')
-rw-r--r--arch/parisc/include/asm/cache.h60
1 files changed, 60 insertions, 0 deletions
diff --git a/arch/parisc/include/asm/cache.h b/arch/parisc/include/asm/cache.h
new file mode 100644
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+++ b/arch/parisc/include/asm/cache.h
@@ -0,0 +1,60 @@
+/*
+ * include/asm-parisc/cache.h
+ */
+
+#ifndef __ARCH_PARISC_CACHE_H
+#define __ARCH_PARISC_CACHE_H
+
+
+/*
+ * PA 2.0 processors have 64-byte cachelines; PA 1.1 processors have
+ * 32-byte cachelines. The default configuration is not for SMP anyway,
+ * so if you're building for SMP, you should select the appropriate
+ * processor type. There is a potential livelock danger when running
+ * a machine with this value set too small, but it's more probable you'll
+ * just ruin performance.
+ */
+#ifdef CONFIG_PA20
+#define L1_CACHE_BYTES 64
+#define L1_CACHE_SHIFT 6
+#else
+#define L1_CACHE_BYTES 32
+#define L1_CACHE_SHIFT 5
+#endif
+
+#ifndef __ASSEMBLY__
+
+#define SMP_CACHE_BYTES L1_CACHE_BYTES
+
+#define ARCH_DMA_MINALIGN L1_CACHE_BYTES
+
+#define __read_mostly __attribute__((__section__(".data..read_mostly")))
+
+void parisc_cache_init(void); /* initializes cache-flushing */
+void disable_sr_hashing_asm(int); /* low level support for above */
+void disable_sr_hashing(void); /* turns off space register hashing */
+void free_sid(unsigned long);
+unsigned long alloc_sid(void);
+
+struct seq_file;
+extern void show_cache_info(struct seq_file *m);
+
+extern int split_tlb;
+extern int dcache_stride;
+extern int icache_stride;
+extern struct pdc_cache_info cache_info;
+void parisc_setup_cache_timing(void);
+
+#define pdtlb(addr) asm volatile("pdtlb 0(%%sr1,%0)" : : "r" (addr));
+#define pitlb(addr) asm volatile("pitlb 0(%%sr1,%0)" : : "r" (addr));
+#define pdtlb_kernel(addr) asm volatile("pdtlb 0(%0)" : : "r" (addr));
+
+#endif /* ! __ASSEMBLY__ */
+
+/* Classes of processor wrt: disabling space register hashing */
+
+#define SRHASH_PCXST 0 /* pcxs, pcxt, pcxt_ */
+#define SRHASH_PCXL 1 /* pcxl */
+#define SRHASH_PA20 2 /* pcxu, pcxu_, pcxw, pcxw_ */
+
+#endif