Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / arch / sparc / include / asm / io.h

diff --git a/qemu/roms/u-boot/arch/sparc/include/asm/io.h b/qemu/roms/u-boot/arch/sparc/include/asm/io.h
new file mode 100644 (file)
index 0000000..f7b89c8
--- /dev/null
+++ b/qemu/roms/u-boot/arch/sparc/include/asm/io.h
@@ -0,0 +1,84 @@
+/* SPARC I/O definitions
+ *
+ * (C) Copyright 2007
+ * Daniel Hellstrom, Gaisler Research, daniel@gaisler.com.
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#ifndef _SPARC_IO_H
+#define _SPARC_IO_H
+
+/* Nothing to sync, total store ordering (TSO)... */
+#define sync()
+
+/* Forces a cache miss on read/load.
+ * On some architectures we need to bypass the cache when reading
+ * I/O registers so that we are not reading the same status word
+ * over and over again resulting in a hang (until an IRQ if lucky)
+ *
+ */
+#ifndef CONFIG_SYS_HAS_NO_CACHE
+#define READ_BYTE(var)  SPARC_NOCACHE_READ_BYTE((unsigned int)(var))
+#define READ_HWORD(var) SPARC_NOCACHE_READ_HWORD((unsigned int)(var))
+#define READ_WORD(var)  SPARC_NOCACHE_READ((unsigned int)(var))
+#define READ_DWORD(var) SPARC_NOCACHE_READ_DWORD((unsigned int)(var))
+#else
+#define READ_BYTE(var)  (var)
+#define READ_HWORD(var) (var)
+#define READ_WORD(var)  (var)
+#define READ_DWORD(var) (var)
+#endif
+
+/*
+ * Generic virtual read/write.
+ */
+#define __arch_getb(a)                 (READ_BYTE(a))
+#define __arch_getw(a)                 (READ_HWORD(a))
+#define __arch_getl(a)                 (READ_WORD(a))
+#define __arch_getq(a)                 (READ_DWORD(a))
+
+#define __arch_putb(v,a)               (*(volatile unsigned char *)(a) = (v))
+#define __arch_putw(v,a)               (*(volatile unsigned short *)(a) = (v))
+#define __arch_putl(v,a)               (*(volatile unsigned int *)(a) = (v))
+
+#define __raw_writeb(v,a)              __arch_putb(v,a)
+#define __raw_writew(v,a)              __arch_putw(v,a)
+#define __raw_writel(v,a)              __arch_putl(v,a)
+
+#define __raw_readb(a)                 __arch_getb(a)
+#define __raw_readw(a)                 __arch_getw(a)
+#define __raw_readl(a)                 __arch_getl(a)
+#define __raw_readq(a)                 __arch_getq(a)
+
+/*
+ * Given a physical address and a length, return a virtual address
+ * that can be used to access the memory range with the caching
+ * properties specified by "flags".
+ */
+
+#define MAP_NOCACHE    (0)
+#define MAP_WRCOMBINE  (0)
+#define MAP_WRBACK     (0)
+#define MAP_WRTHROUGH  (0)
+
+static inline void *map_physmem(phys_addr_t paddr, unsigned long len,
+                               unsigned long flags)
+{
+       return (void *)paddr;
+}
+
+/*
+ * Take down a mapping set up by map_physmem().
+ */
+static inline void unmap_physmem(void *vaddr, unsigned long flags)
+{
+
+}
+
+static inline phys_addr_t virt_to_phys(void * vaddr)
+{
+       return (phys_addr_t)(vaddr);
+}
+
+#endif