patch-2_6_7-vs1_9_1_12

[linux-2.6.git] / include / asm-arm / arch-omap / io.h

diff --git a/include/asm-arm/arch-omap/io.h b/include/asm-arm/arch-omap/io.h
index 86c1cb3..6622ba3 100644 (file)
--- a/include/asm-arm/arch-omap/io.h
+++ b/include/asm-arm/arch-omap/io.h
@@ -1,13 +1,36 @@
 /*
  * 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
 
@@ -21,6 +44,24 @@
 #define __mem_pci(a)           ((unsigned long)(a))
 #define __mem_isa(a)           ((unsigned long)(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
  *
@@ -38,4 +79,29 @@
 #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