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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-05-14 05:45:59 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-05-14 05:45:59 -0300
commitc91265cd0efb83778f015b4d4b1129bd2cfd075e (patch)
treec9e2ebed36b5a70f0d7c58cb7e3d36e823ccde9f /arch/arc/include/asm
parenta5cdf7364020a61375af3c8aa23e09181f5c2c6c (diff)
Linux-libre 4.5.4-gnupck-4.5.4-gnu
Diffstat (limited to 'arch/arc/include/asm')
-rw-r--r--arch/arc/include/asm/io.h27
1 files changed, 18 insertions, 9 deletions
diff --git a/arch/arc/include/asm/io.h b/arch/arc/include/asm/io.h
index 27b17adea..cb69299a4 100644
--- a/arch/arc/include/asm/io.h
+++ b/arch/arc/include/asm/io.h
@@ -13,6 +13,15 @@
#include <asm/byteorder.h>
#include <asm/page.h>
+#ifdef CONFIG_ISA_ARCV2
+#include <asm/barrier.h>
+#define __iormb() rmb()
+#define __iowmb() wmb()
+#else
+#define __iormb() do { } while (0)
+#define __iowmb() do { } while (0)
+#endif
+
extern void __iomem *ioremap(unsigned long physaddr, unsigned long size);
extern void __iomem *ioremap_prot(phys_addr_t offset, unsigned long size,
unsigned long flags);
@@ -22,6 +31,15 @@ extern void iounmap(const void __iomem *addr);
#define ioremap_wc(phy, sz) ioremap(phy, sz)
#define ioremap_wt(phy, sz) ioremap(phy, sz)
+/*
+ * io{read,write}{16,32}be() macros
+ */
+#define ioread16be(p) ({ u16 __v = be16_to_cpu((__force __be16)__raw_readw(p)); __iormb(); __v; })
+#define ioread32be(p) ({ u32 __v = be32_to_cpu((__force __be32)__raw_readl(p)); __iormb(); __v; })
+
+#define iowrite16be(v,p) ({ __iowmb(); __raw_writew((__force u16)cpu_to_be16(v), p); })
+#define iowrite32be(v,p) ({ __iowmb(); __raw_writel((__force u32)cpu_to_be32(v), p); })
+
/* Change struct page to physical address */
#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
@@ -99,15 +117,6 @@ static inline void __raw_writel(u32 w, volatile void __iomem *addr)
}
-#ifdef CONFIG_ISA_ARCV2
-#include <asm/barrier.h>
-#define __iormb() rmb()
-#define __iowmb() wmb()
-#else
-#define __iormb() do { } while (0)
-#define __iowmb() do { } while (0)
-#endif
-
/*
* MMIO can also get buffered/optimized in micro-arch, so barriers needed
* Based on ARM model for the typical use case