summaryrefslogtreecommitdiff
path: root/include/asm-sparc/ide_64.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-sparc/ide_64.h')
-rw-r--r--include/asm-sparc/ide_64.h118
1 files changed, 118 insertions, 0 deletions
diff --git a/include/asm-sparc/ide_64.h b/include/asm-sparc/ide_64.h
new file mode 100644
index 000000000000..1282676da1cd
--- /dev/null
+++ b/include/asm-sparc/ide_64.h
@@ -0,0 +1,118 @@
+/*
+ * ide.h: Ultra/PCI specific IDE glue.
+ *
+ * Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright (C) 1998 Eddie C. Dost (ecd@skynet.be)
+ */
+
+#ifndef _SPARC64_IDE_H
+#define _SPARC64_IDE_H
+
+#ifdef __KERNEL__
+
+#include <asm/pgalloc.h>
+#include <asm/io.h>
+#include <asm/spitfire.h>
+#include <asm/cacheflush.h>
+#include <asm/page.h>
+
+#ifndef MAX_HWIFS
+# ifdef CONFIG_BLK_DEV_IDEPCI
+#define MAX_HWIFS 10
+# else
+#define MAX_HWIFS 2
+# endif
+#endif
+
+#define __ide_insl(data_reg, buffer, wcount) \
+ __ide_insw(data_reg, buffer, (wcount)<<1)
+#define __ide_outsl(data_reg, buffer, wcount) \
+ __ide_outsw(data_reg, buffer, (wcount)<<1)
+
+/* On sparc64, I/O ports and MMIO registers are accessed identically. */
+#define __ide_mm_insw __ide_insw
+#define __ide_mm_insl __ide_insl
+#define __ide_mm_outsw __ide_outsw
+#define __ide_mm_outsl __ide_outsl
+
+static inline unsigned int inw_be(void __iomem *addr)
+{
+ unsigned int ret;
+
+ __asm__ __volatile__("lduha [%1] %2, %0"
+ : "=r" (ret)
+ : "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
+
+ return ret;
+}
+
+static inline void __ide_insw(void __iomem *port, void *dst, u32 count)
+{
+#ifdef DCACHE_ALIASING_POSSIBLE
+ unsigned long end = (unsigned long)dst + (count << 1);
+#endif
+ u16 *ps = dst;
+ u32 *pi;
+
+ if(((u64)ps) & 0x2) {
+ *ps++ = inw_be(port);
+ count--;
+ }
+ pi = (u32 *)ps;
+ while(count >= 2) {
+ u32 w;
+
+ w = inw_be(port) << 16;
+ w |= inw_be(port);
+ *pi++ = w;
+ count -= 2;
+ }
+ ps = (u16 *)pi;
+ if(count)
+ *ps++ = inw_be(port);
+
+#ifdef DCACHE_ALIASING_POSSIBLE
+ __flush_dcache_range((unsigned long)dst, end);
+#endif
+}
+
+static inline void outw_be(unsigned short w, void __iomem *addr)
+{
+ __asm__ __volatile__("stha %0, [%1] %2"
+ : /* no outputs */
+ : "r" (w), "r" (addr), "i" (ASI_PHYS_BYPASS_EC_E));
+}
+
+static inline void __ide_outsw(void __iomem *port, void *src, u32 count)
+{
+#ifdef DCACHE_ALIASING_POSSIBLE
+ unsigned long end = (unsigned long)src + (count << 1);
+#endif
+ const u16 *ps = src;
+ const u32 *pi;
+
+ if(((u64)src) & 0x2) {
+ outw_be(*ps++, port);
+ count--;
+ }
+ pi = (const u32 *)ps;
+ while(count >= 2) {
+ u32 w;
+
+ w = *pi++;
+ outw_be((w >> 16), port);
+ outw_be(w, port);
+ count -= 2;
+ }
+ ps = (const u16 *)pi;
+ if(count)
+ outw_be(*ps, port);
+
+#ifdef DCACHE_ALIASING_POSSIBLE
+ __flush_dcache_range((unsigned long)src, end);
+#endif
+}
+
+#endif /* __KERNEL__ */
+
+#endif /* _SPARC64_IDE_H */