#define SIO_CONFIG_RA 0x398
#define SIO_CONFIG_RD 0x399
+#ifndef _IO_BASE
+#define _IO_BASE 0
+#endif
#define readb(addr) in_8((volatile u8 *)(addr))
#define writeb(b,addr) out_8((volatile u8 *)(addr), (b))
* Acts as a barrier to ensure all previous I/O accesses have
* completed before any further ones are issued.
*/
-#define eieio() __asm__ __volatile__ ("eieio" : : : "memory");
-#define sync() __asm__ __volatile__ ("sync" : : : "memory");
+static inline void eieio(void)
+{
+ __asm__ __volatile__ ("eieio" : : : "memory");
+}
+
+static inline void sync(void)
+{
+ __asm__ __volatile__ ("sync" : : : "memory");
+}
+
+static inline void isync(void)
+{
+ __asm__ __volatile__ ("isync" : : : "memory");
+}
/* Enforce in-order execution of data I/O.
* No distinction between read/write on PPC; use eieio for all three.
#define iobarrier_r() eieio()
#define iobarrier_w() eieio()
+/*
+ * Non ordered and non-swapping "raw" accessors
+ */
+#define __iomem
+#define PCI_FIX_ADDR(addr) (addr)
+
+static inline unsigned char __raw_readb(const volatile void __iomem *addr)
+{
+ return *(volatile unsigned char *)PCI_FIX_ADDR(addr);
+}
+static inline unsigned short __raw_readw(const volatile void __iomem *addr)
+{
+ return *(volatile unsigned short *)PCI_FIX_ADDR(addr);
+}
+static inline unsigned int __raw_readl(const volatile void __iomem *addr)
+{
+ return *(volatile unsigned int *)PCI_FIX_ADDR(addr);
+}
+static inline void __raw_writeb(unsigned char v, volatile void __iomem *addr)
+{
+ *(volatile unsigned char *)PCI_FIX_ADDR(addr) = v;
+}
+static inline void __raw_writew(unsigned short v, volatile void __iomem *addr)
+{
+ *(volatile unsigned short *)PCI_FIX_ADDR(addr) = v;
+}
+static inline void __raw_writel(unsigned int v, volatile void __iomem *addr)
+{
+ *(volatile unsigned int *)PCI_FIX_ADDR(addr) = v;
+}
+
/*
* 8, 16 and 32 bit, big and little endian I/O operations, with barrier.
+ *
+ * Read operations have additional twi & isync to make sure the read
+ * is actually performed (i.e. the data has come back) before we start
+ * executing any following instructions.
*/
-extern inline int in_8(volatile u8 *addr)
+extern inline int in_8(const volatile unsigned char __iomem *addr)
{
- int ret;
+ int ret;
- __asm__ __volatile__("lbz%U1%X1 %0,%1; eieio" : "=r" (ret) : "m" (*addr));
- return ret;
+ __asm__ __volatile__(
+ "sync; lbz%U1%X1 %0,%1;\n"
+ "twi 0,%0,0;\n"
+ "isync" : "=r" (ret) : "m" (*addr));
+ return ret;
}
-extern inline void out_8(volatile u8 *addr, int val)
+extern inline void out_8(volatile unsigned char __iomem *addr, int val)
{
- __asm__ __volatile__("stb%U0%X0 %1,%0; eieio" : "=m" (*addr) : "r" (val));
+ __asm__ __volatile__("stb%U0%X0 %1,%0; eieio" : "=m" (*addr) : "r" (val));
}
-extern inline int in_le16(volatile u16 *addr)
+extern inline int in_le16(const volatile unsigned short __iomem *addr)
{
- int ret;
+ int ret;
- __asm__ __volatile__("lhbrx %0,0,%1; eieio" : "=r" (ret) :
- "r" (addr), "m" (*addr));
- return ret;
+ __asm__ __volatile__("sync; lhbrx %0,0,%1;\n"
+ "twi 0,%0,0;\n"
+ "isync" : "=r" (ret) :
+ "r" (addr), "m" (*addr));
+ return ret;
}
-extern inline int in_be16(volatile u16 *addr)
+extern inline int in_be16(const volatile unsigned short __iomem *addr)
{
- int ret;
+ int ret;
+
+ __asm__ __volatile__("sync; lhz%U1%X1 %0,%1;\n"
+ "twi 0,%0,0;\n"
+ "isync" : "=r" (ret) : "m" (*addr));
+ return ret;
+}
- __asm__ __volatile__("lhz%U1%X1 %0,%1; eieio" : "=r" (ret) : "m" (*addr));
- return ret;
+extern inline void out_le16(volatile unsigned short __iomem *addr, int val)
+{
+ __asm__ __volatile__("sync; sthbrx %1,0,%2" : "=m" (*addr) :
+ "r" (val), "r" (addr));
}
-extern inline void out_le16(volatile u16 *addr, int val)
+extern inline void out_be16(volatile unsigned short __iomem *addr, int val)
{
- __asm__ __volatile__("sthbrx %1,0,%2; eieio" : "=m" (*addr) :
- "r" (val), "r" (addr));
+ __asm__ __volatile__("sync; sth%U0%X0 %1,%0" : "=m" (*addr) : "r" (val));
}
-extern inline void out_be16(volatile u16 *addr, int val)
+extern inline unsigned in_le32(const volatile unsigned __iomem *addr)
{
- __asm__ __volatile__("sth%U0%X0 %1,%0; eieio" : "=m" (*addr) : "r" (val));
+ unsigned ret;
+
+ __asm__ __volatile__("sync; lwbrx %0,0,%1;\n"
+ "twi 0,%0,0;\n"
+ "isync" : "=r" (ret) :
+ "r" (addr), "m" (*addr));
+ return ret;
}
-extern inline unsigned in_le32(volatile u32 *addr)
+extern inline unsigned in_be32(const volatile unsigned __iomem *addr)
{
- unsigned ret;
+ unsigned ret;
- __asm__ __volatile__("lwbrx %0,0,%1; eieio" : "=r" (ret) :
- "r" (addr), "m" (*addr));
- return ret;
+ __asm__ __volatile__("sync; lwz%U1%X1 %0,%1;\n"
+ "twi 0,%0,0;\n"
+ "isync" : "=r" (ret) : "m" (*addr));
+ return ret;
}
-extern inline unsigned in_be32(volatile u32 *addr)
+extern inline void out_le32(volatile unsigned __iomem *addr, int val)
{
- unsigned ret;
+ __asm__ __volatile__("sync; stwbrx %1,0,%2" : "=m" (*addr) :
+ "r" (val), "r" (addr));
+}
- __asm__ __volatile__("lwz%U1%X1 %0,%1; eieio" : "=r" (ret) : "m" (*addr));
- return ret;
+extern inline void out_be32(volatile unsigned __iomem *addr, int val)
+{
+ __asm__ __volatile__("sync; stw%U0%X0 %1,%0" : "=m" (*addr) : "r" (val));
}
-extern inline void out_le32(volatile unsigned *addr, int val)
+/*
+ * Given a physical address and a length, return a virtual address
+ * that can be used to access the memory range with the caching
+ * properties specified by "flags".
+ */
+#define MAP_NOCACHE (0)
+#define MAP_WRCOMBINE (0)
+#define MAP_WRBACK (0)
+#define MAP_WRTHROUGH (0)
+
+static inline void *
+map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
{
- __asm__ __volatile__("stwbrx %1,0,%2; eieio" : "=m" (*addr) :
- "r" (val), "r" (addr));
+ return (void *)paddr;
}
-extern inline void out_be32(volatile unsigned *addr, int val)
+/*
+ * Take down a mapping set up by map_physmem().
+ */
+static inline void unmap_physmem(void *vaddr, unsigned long flags)
{
- __asm__ __volatile__("stw%U0%X0 %1,%0; eieio" : "=m" (*addr) : "r" (val));
+
}
#endif
projects / u-boot / blobdiff