[PATCH] CRIS update: pci

Patches to make it possible to add PCI support.

Signed-off-by: Mikael Starvik <starvik@axis.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 81 insertions, 22 deletions

diff --git a/include/asm-cris/io.h b/include/asm-cris/io.h
index 1d2b517..16e791b 100644
--- a/include/asm-cris/io.h
+++ b/include/asm-cris/io.h
@@ -3,6 +3,21 @@
 
 #include <asm/page.h>   /* for __va, __pa */
 #include <asm/arch/io.h>
+#include <linux/kernel.h>
+
+struct cris_io_operations
+{
+	u32 (*read_mem)(void *addr, int size);
+	void (*write_mem)(u32 val, int size, void *addr);
+	u32 (*read_io)(u32 port, void *addr, int size, int count);
+	void (*write_io)(u32 port, void *addr, int size, int count);
+};
+
+#ifdef CONFIG_PCI
+extern struct cris_io_operations *cris_iops;
+#else
+#define cris_iops ((struct cris_io_operations*)NULL)
+#endif
 
 /*
  * Change virtual addresses to physical addresses and vv.
@@ -18,14 +33,17 @@ extern inline void * phys_to_virt(unsigned long address)
 	return __va(address);
 }
 
-extern void * __ioremap(unsigned long offset, unsigned long size, unsigned long flags);
+extern void __iomem * __ioremap(unsigned long offset, unsigned long size, unsigned long flags);
+extern void __iomem * __ioremap_prot(unsigned long phys_addr, unsigned long size, pgprot_t prot);
 
-extern inline void * ioremap (unsigned long offset, unsigned long size)
+extern inline void __iomem * ioremap (unsigned long offset, unsigned long size)
 {
 	return __ioremap(offset, size, 0);
 }
 
-extern void iounmap(void *addr);
+extern void iounmap(volatile void * __iomem addr);
+
+extern void __iomem * ioremap_nocache(unsigned long offset, unsigned long size);
 
 /*
  * IO bus memory addresses are also 1:1 with the physical address
@@ -39,9 +57,32 @@ extern void iounmap(void *addr);
  * differently. On the CRIS architecture, we just read/write the
  * memory location directly.
  */
-#define readb(addr) (*(volatile unsigned char *) (addr))
-#define readw(addr) (*(volatile unsigned short *) (addr))
-#define readl(addr) (*(volatile unsigned int *) (addr))
+#ifdef CONFIG_PCI
+#define PCI_SPACE(x) ((((unsigned)(x)) & 0x10000000) == 0x10000000)
+#else
+#define PCI_SPACE(x) 0
+#endif
+static inline unsigned char readb(const volatile void __iomem *addr)
+{
+	if (PCI_SPACE(addr) && cris_iops)
+		return cris_iops->read_mem((void*)addr, 1);
+	else
+		return *(volatile unsigned char __force *) addr;
+}
+static inline unsigned short readw(const volatile void __iomem *addr)
+{
+	if (PCI_SPACE(addr) && cris_iops)
+		return cris_iops->read_mem((void*)addr, 2);
+	else
+		return *(volatile unsigned short __force *) addr;
+}
+static inline unsigned int readl(const volatile void __iomem *addr)
+{
+	if (PCI_SPACE(addr) && cris_iops)
+		return cris_iops->read_mem((void*)addr, 4);
+	else
+		return *(volatile unsigned int __force *) addr;
+}
 #define readb_relaxed(addr) readb(addr)
 #define readw_relaxed(addr) readw(addr)
 #define readl_relaxed(addr) readl(addr)
@@ -49,9 +90,27 @@ extern void iounmap(void *addr);
 #define __raw_readw readw
 #define __raw_readl readl
 
-#define writeb(b,addr) ((*(volatile unsigned char *) (addr)) = (b))
-#define writew(b,addr) ((*(volatile unsigned short *) (addr)) = (b))
-#define writel(b,addr) ((*(volatile unsigned int *) (addr)) = (b))
+static inline void writeb(unsigned char b, volatile void __iomem *addr)
+{
+	if (PCI_SPACE(addr) && cris_iops)
+		cris_iops->write_mem(b, 1, (void*)addr);
+	else
+		*(volatile unsigned char __force *) addr = b;
+}
+static inline void writew(unsigned short b, volatile void __iomem *addr)
+{
+	if (PCI_SPACE(addr) && cris_iops)
+		cris_iops->write_mem(b, 2, (void*)addr);
+	else
+		*(volatile unsigned short __force *) addr = b;
+}
+static inline void writel(unsigned int b, volatile void __iomem *addr)
+{
+	if (PCI_SPACE(addr) && cris_iops)
+		cris_iops->write_mem(b, 4, (void*)addr);
+	else
+		*(volatile unsigned int __force *) addr = b;
+}
 #define __raw_writeb writeb
 #define __raw_writew writew
 #define __raw_writel writel
@@ -66,25 +125,25 @@ extern void iounmap(void *addr);
  * Again, CRIS does not require mem IO specific function.
  */
 
-#define eth_io_copy_and_sum(a,b,c,d)	eth_copy_and_sum((a),(void *)(b),(c),(d))
+#define eth_io_copy_and_sum(a,b,c,d)	eth_copy_and_sum((a),(void __force *)(b),(c),(d))
 
 /* The following is junk needed for the arch-independent code but which
  * we never use in the CRIS port
  */
 
 #define IO_SPACE_LIMIT 0xffff
-#define inb(x) (0)
-#define inw(x) (0)
-#define inl(x) (0)
-#define outb(x,y)
-#define outw(x,y)
-#define outl(x,y)
-#define insb(x,y,z)
-#define insw(x,y,z)
-#define insl(x,y,z)
-#define outsb(x,y,z)
-#define outsw(x,y,z)
-#define outsl(x,y,z)
+#define inb(port) (cris_iops ? cris_iops->read_io(port,NULL,1,1) : 0)
+#define inw(port) (cris_iops ? cris_iops->read_io(port,NULL,2,1) : 0)
+#define inl(port) (cris_iops ? cris_iops->read_io(port,NULL,4,1) : 0)
+#define insb(port,addr,count) (cris_iops ? cris_iops->read_io(port,addr,1,count) : 0)
+#define insw(port,addr,count) (cris_iops ? cris_iops->read_io(port,addr,2,count) : 0)
+#define insl(port,addr,count) (cris_iops ? cris_iops->read_io(port,addr,4,count) : 0)
+#define outb(data,port) if (cris_iops) cris_iops->write_io(port,(void*)(unsigned)data,1,1)
+#define outw(data,port) if (cris_iops) cris_iops->write_io(port,(void*)(unsigned)data,2,1)
+#define outl(data,port) if (cris_iops) cris_iops->write_io(port,(void*)(unsigned)data,4,1)
+#define outsb(port,addr,count) if(cris_iops) cris_iops->write_io(port,(void*)addr,1,count)
+#define outsw(port,addr,count) if(cris_iops) cris_iops->write_io(port,(void*)addr,2,count)
+#define outsl(port,addr,count) if(cris_iops) cris_iops->write_io(port,(void*)addr,3,count)
 
 /*
  * Convert a physical pointer to a virtual kernel pointer for /dev/mem