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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-12 18:11:33 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-12 18:11:33 -0700
commitf7d02ae76ebbf5b8a9531fe150c49e126a397704 (patch)
treebcfdcab6e70658d55a3c843694e04e938bf9168f /include/asm-arm/arch-davinci/io.h
parentinclude/linux: trivial repair whitespace damage (diff)
parentMerge branch 'fixes' into devel (diff)
downloadlinux-dev-f7d02ae76ebbf5b8a9531fe150c49e126a397704.tar.xz
linux-dev-f7d02ae76ebbf5b8a9531fe150c49e126a397704.zip
Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (30 commits) [ARM] Use new get_irqnr_preamble [ARM] Ensure machine class menu is sorted alphabetically [ARM] 4333/2: KS8695: Micrel Development board [ARM] 4332/2: KS8695: Serial driver [ARM] 4331/3: Support for Micrel/Kendin KS8695 processor [ARM] 4371/1: AT91: Support for Atmel AT91SAM9RL-EK development board [ARM] 4372/1: Define byte sizes in asm-arm/sizes.h [ARM] 4370/3: AT91: Support for Atmel AT91SAM9RL processors. [ARM] Update mach-types [ARM] export symbol csum_partial_copy_from_user [ARM] iop13xx: msi support [ARM] stacktrace fix [ARM] Spinlock initializer cleanup [ARM] remove useless config option GENERIC_BUST_SPINLOCK [ARM] 4303/3: base kernel support for TI DaVinci [ARM] 4369/1: AT91: Fix circular dependency in header files [ARM] 4368/1: S3C24xx: build fix [ARM] 4364/1: AT91: LEDS on AT91SAM9261-EK [ARM] Fix iop32x/iop33x build [ARM] EBSA110: fix build errors caused by missing "const" ...
Diffstat (limited to 'include/asm-arm/arch-davinci/io.h')
-rw-r--r--include/asm-arm/arch-davinci/io.h79
1 files changed, 79 insertions, 0 deletions
diff --git a/include/asm-arm/arch-davinci/io.h b/include/asm-arm/arch-davinci/io.h
new file mode 100644
index 000000000000..e7accb910864
--- /dev/null
+++ b/include/asm-arm/arch-davinci/io.h
@@ -0,0 +1,79 @@
+/*
+ * DaVinci IO address definitions
+ *
+ * Copied from include/asm/arm/arch-omap/io.h
+ *
+ * 2007 (c) MontaVista Software, Inc. This file is licensed under
+ * the terms of the GNU General Public License version 2. This program
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+#ifndef __ASM_ARCH_IO_H
+#define __ASM_ARCH_IO_H
+
+#define IO_SPACE_LIMIT 0xffffffff
+
+/*
+ * ----------------------------------------------------------------------------
+ * I/O mapping
+ * ----------------------------------------------------------------------------
+ */
+#define IO_PHYS 0x01c00000
+#define IO_OFFSET 0xfd000000 /* Virtual IO = 0xfec00000 */
+#define IO_SIZE 0x00400000
+#define IO_VIRT (IO_PHYS + IO_OFFSET)
+#define io_p2v(pa) ((pa) + IO_OFFSET)
+#define io_v2p(va) ((va) - IO_OFFSET)
+#define IO_ADDRESS(x) io_p2v(x)
+
+/*
+ * We don't actually have real ISA nor PCI buses, but there is so many
+ * drivers out there that might just work if we fake them...
+ */
+#define PCIO_BASE 0
+#define __io(a) ((void __iomem *)(PCIO_BASE + (a)))
+#define __mem_pci(a) (a)
+#define __mem_isa(a) (a)
+
+#ifndef __ASSEMBLER__
+
+/*
+ * Functions to access the DaVinci IO region
+ *
+ * NOTE: - Use davinci_read/write[bwl] for physical register addresses
+ * - Use __raw_read/write[bwl]() for virtual register addresses
+ * - Use IO_ADDRESS(phys_addr) to convert registers to virtual addresses
+ * - DO NOT use hardcoded virtual addresses to allow changing the
+ * IO address space again if needed
+ */
+#define davinci_readb(a) (*(volatile unsigned char *)IO_ADDRESS(a))
+#define davinci_readw(a) (*(volatile unsigned short *)IO_ADDRESS(a))
+#define davinci_readl(a) (*(volatile unsigned int *)IO_ADDRESS(a))
+
+#define davinci_writeb(v,a) (*(volatile unsigned char *)IO_ADDRESS(a) = (v))
+#define davinci_writew(v,a) (*(volatile unsigned short *)IO_ADDRESS(a) = (v))
+#define davinci_writel(v,a) (*(volatile unsigned int *)IO_ADDRESS(a) = (v))
+
+/* 16 bit uses LDRH/STRH, base +/- offset_8 */
+typedef struct { volatile u16 offset[256]; } __regbase16;
+#define __REGV16(vaddr) ((__regbase16 *)((vaddr)&~0xff)) \
+ ->offset[((vaddr)&0xff)>>1]
+#define __REG16(paddr) __REGV16(io_p2v(paddr))
+
+/* 8/32 bit uses LDR/STR, base +/- offset_12 */
+typedef struct { volatile u8 offset[4096]; } __regbase8;
+#define __REGV8(vaddr) ((__regbase8 *)((vaddr)&~4095)) \
+ ->offset[((vaddr)&4095)>>0]
+#define __REG8(paddr) __REGV8(io_p2v(paddr))
+
+typedef struct { volatile u32 offset[4096]; } __regbase32;
+#define __REGV32(vaddr) ((__regbase32 *)((vaddr)&~4095)) \
+ ->offset[((vaddr)&4095)>>2]
+
+#define __REG(paddr) __REGV32(io_p2v(paddr))
+#else
+
+#define __REG(x) (*((volatile unsigned long *)io_p2v(x)))
+
+#endif /* __ASSEMBLER__ */
+#endif /* __ASM_ARCH_IO_H */