1 files changed, 107 insertions, 0 deletions

diff --git a/include/asm-arm/arch-omap/io.h b/include/asm-arm/arch-omap/io.h
new file mode 100644
index 000000000000..1c8c9fcc766e
--- /dev/null
+++ b/include/asm-arm/arch-omap/io.h
@@ -0,0 +1,107 @@
+/*
+ * linux/include/asm-arm/arch-omap/io.h
+ *
+ * IO definitions for TI OMAP processors and boards
+ *
+ * Copied from linux/include/asm-arm/arch-sa1100/io.h
+ * Copyright (C) 1997-1999 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Modifications:
+ *  06-12-1997  RMK     Created.
+ *  07-04-1999  RMK     Major cleanup
+ */
+
+#ifndef __ASM_ARM_ARCH_IO_H
+#define __ASM_ARM_ARCH_IO_H
+
+#define IO_SPACE_LIMIT 0xffffffff
+
+/*
+ * 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 __io(a)                 ((void __iomem *)(PCIO_BASE + (a)))
+#define __mem_pci(a)            (a)
+#define __mem_isa(a)            (a)
+
+/*
+ * ----------------------------------------------------------------------------
+ * I/O mapping
+ * ----------------------------------------------------------------------------
+ */
+#define IO_PHYS                 0xFFFB0000
+#define IO_OFFSET               0x01000000      /* Virtual IO = 0xfefb0000 */
+#define IO_VIRT                 (IO_PHYS - IO_OFFSET)
+#define IO_SIZE                 0x40000
+#define IO_ADDRESS(x)           ((x) - IO_OFFSET)
+
+#define PCIO_BASE               0
+
+#define io_p2v(x)               ((x) - IO_OFFSET)
+#define io_v2p(x)               ((x) + IO_OFFSET)
+
+#ifndef __ASSEMBLER__
+
+/*
+ * Functions to access the OMAP IO region
+ *
+ * NOTE: - Use omap_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 omap_readb(a)           (*(volatile unsigned char  *)IO_ADDRESS(a))
+#define omap_readw(a)           (*(volatile unsigned short *)IO_ADDRESS(a))
+#define omap_readl(a)           (*(volatile unsigned int   *)IO_ADDRESS(a))
+
+#define omap_writeb(v,a)        (*(volatile unsigned char  *)IO_ADDRESS(a) = (v))
+#define omap_writew(v,a)        (*(volatile unsigned short *)IO_ADDRESS(a) = (v))
+#define omap_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 __REG32(paddr)          __REGV32(io_p2v(paddr))
+
+#else
+
+#define __REG8(paddr)           io_p2v(paddr)
+#define __REG16(paddr)          io_p2v(paddr)
+#define __REG32(paddr)          io_p2v(paddr)
+
+#endif
+
+#endif