diff options
Diffstat (limited to 'arch/arm/mach-ixp4xx/include/mach/io.h')
| -rw-r--r-- | arch/arm/mach-ixp4xx/include/mach/io.h | 307 |
1 files changed, 133 insertions, 174 deletions
diff --git a/arch/arm/mach-ixp4xx/include/mach/io.h b/arch/arm/mach-ixp4xx/include/mach/io.h index 8a947d42a6f1..6ea7e2fb2701 100644 --- a/arch/arm/mach-ixp4xx/include/mach/io.h +++ b/arch/arm/mach-ixp4xx/include/mach/io.h @@ -26,22 +26,20 @@ extern int ixp4xx_pci_write(u32 addr, u32 cmd, u32 data); /* * IXP4xx provides two methods of accessing PCI memory space: * - * 1) A direct mapped window from 0x48000000 to 0x4bffffff (64MB). + * 1) A direct mapped window from 0x48000000 to 0x4BFFFFFF (64MB). * To access PCI via this space, we simply ioremap() the BAR * into the kernel and we can use the standard read[bwl]/write[bwl] * macros. This is the preffered method due to speed but it - * limits the system to just 64MB of PCI memory. This can be - * problamatic if using video cards and other memory-heavy - * targets. - * - * 2) If > 64MB of memory space is required, the IXP4xx can be configured - * to use indirect registers to access PCI (as we do below for I/O - * transactions). This allows for up to 128MB (0x48000000 to 0x4fffffff) - * of memory on the bus. The disadvantage of this is that every - * PCI access requires three local register accesses plus a spinlock, - * but in some cases the performance hit is acceptable. In addition, - * you cannot mmap() PCI devices in this case. + * limits the system to just 64MB of PCI memory. This can be + * problematic if using video cards and other memory-heavy targets. * + * 2) If > 64MB of memory space is required, the IXP4xx can use indirect + * registers to access the whole 4 GB of PCI memory space (as we do below + * for I/O transactions). This allows currently for up to 1 GB (0x10000000 + * to 0x4FFFFFFF) of memory on the bus. The disadvantage of this is that + * every PCI access requires three local register accesses plus a spinlock, + * but in some cases the performance hit is acceptable. In addition, you + * cannot mmap() PCI devices in this case. */ #ifndef CONFIG_IXP4XX_INDIRECT_PCI @@ -55,48 +53,52 @@ extern int ixp4xx_pci_write(u32 addr, u32 cmd, u32 data); * access registers. If something outside of PCI is ioremap'd, we * fallback to the default. */ -static inline void __iomem * -__ixp4xx_ioremap(unsigned long addr, size_t size, unsigned int mtype) + +static inline int is_pci_memory(u32 addr) +{ + return (addr >= PCIBIOS_MIN_MEM) && (addr <= 0x4FFFFFFF); +} + +static inline void __iomem * __indirect_ioremap(unsigned long addr, size_t size, + unsigned int mtype) { - if((addr < PCIBIOS_MIN_MEM) || (addr > 0x4fffffff)) + if (!is_pci_memory(addr)) return __arm_ioremap(addr, size, mtype); return (void __iomem *)addr; } -static inline void -__ixp4xx_iounmap(void __iomem *addr) +static inline void __indirect_iounmap(void __iomem *addr) { - if ((__force u32)addr >= VMALLOC_START) + if (!is_pci_memory((__force u32)addr)) __iounmap(addr); } -#define __arch_ioremap(a, s, f) __ixp4xx_ioremap(a, s, f) -#define __arch_iounmap(a) __ixp4xx_iounmap(a) +#define __arch_ioremap(a, s, f) __indirect_ioremap(a, s, f) +#define __arch_iounmap(a) __indirect_iounmap(a) -#define writeb(v, p) __ixp4xx_writeb(v, p) -#define writew(v, p) __ixp4xx_writew(v, p) -#define writel(v, p) __ixp4xx_writel(v, p) +#define writeb(v, p) __indirect_writeb(v, p) +#define writew(v, p) __indirect_writew(v, p) +#define writel(v, p) __indirect_writel(v, p) -#define writesb(p, v, l) __ixp4xx_writesb(p, v, l) -#define writesw(p, v, l) __ixp4xx_writesw(p, v, l) -#define writesl(p, v, l) __ixp4xx_writesl(p, v, l) - -#define readb(p) __ixp4xx_readb(p) -#define readw(p) __ixp4xx_readw(p) -#define readl(p) __ixp4xx_readl(p) - -#define readsb(p, v, l) __ixp4xx_readsb(p, v, l) -#define readsw(p, v, l) __ixp4xx_readsw(p, v, l) -#define readsl(p, v, l) __ixp4xx_readsl(p, v, l) +#define writesb(p, v, l) __indirect_writesb(p, v, l) +#define writesw(p, v, l) __indirect_writesw(p, v, l) +#define writesl(p, v, l) __indirect_writesl(p, v, l) -static inline void -__ixp4xx_writeb(u8 value, volatile void __iomem *p) +#define readb(p) __indirect_readb(p) +#define readw(p) __indirect_readw(p) +#define readl(p) __indirect_readl(p) + +#define readsb(p, v, l) __indirect_readsb(p, v, l) +#define readsw(p, v, l) __indirect_readsw(p, v, l) +#define readsl(p, v, l) __indirect_readsl(p, v, l) + +static inline void __indirect_writeb(u8 value, volatile void __iomem *p) { u32 addr = (u32)p; u32 n, byte_enables, data; - if (addr >= VMALLOC_START) { + if (!is_pci_memory(addr)) { __raw_writeb(value, addr); return; } @@ -107,20 +109,19 @@ __ixp4xx_writeb(u8 value, volatile void __iomem *p) ixp4xx_pci_write(addr, byte_enables | NP_CMD_MEMWRITE, data); } -static inline void -__ixp4xx_writesb(volatile void __iomem *bus_addr, const u8 *vaddr, int count) +static inline void __indirect_writesb(volatile void __iomem *bus_addr, + const u8 *vaddr, int count) { while (count--) writeb(*vaddr++, bus_addr); } -static inline void -__ixp4xx_writew(u16 value, volatile void __iomem *p) +static inline void __indirect_writew(u16 value, volatile void __iomem *p) { u32 addr = (u32)p; u32 n, byte_enables, data; - if (addr >= VMALLOC_START) { + if (!is_pci_memory(addr)) { __raw_writew(value, addr); return; } @@ -131,18 +132,18 @@ __ixp4xx_writew(u16 value, volatile void __iomem *p) ixp4xx_pci_write(addr, byte_enables | NP_CMD_MEMWRITE, data); } -static inline void -__ixp4xx_writesw(volatile void __iomem *bus_addr, const u16 *vaddr, int count) +static inline void __indirect_writesw(volatile void __iomem *bus_addr, + const u16 *vaddr, int count) { while (count--) writew(*vaddr++, bus_addr); } -static inline void -__ixp4xx_writel(u32 value, volatile void __iomem *p) +static inline void __indirect_writel(u32 value, volatile void __iomem *p) { u32 addr = (__force u32)p; - if (addr >= VMALLOC_START) { + + if (!is_pci_memory(addr)) { __raw_writel(value, p); return; } @@ -150,20 +151,19 @@ __ixp4xx_writel(u32 value, volatile void __iomem *p) ixp4xx_pci_write(addr, NP_CMD_MEMWRITE, value); } -static inline void -__ixp4xx_writesl(volatile void __iomem *bus_addr, const u32 *vaddr, int count) +static inline void __indirect_writesl(volatile void __iomem *bus_addr, + const u32 *vaddr, int count) { while (count--) writel(*vaddr++, bus_addr); } -static inline unsigned char -__ixp4xx_readb(const volatile void __iomem *p) +static inline unsigned char __indirect_readb(const volatile void __iomem *p) { u32 addr = (u32)p; u32 n, byte_enables, data; - if (addr >= VMALLOC_START) + if (!is_pci_memory(addr)) return __raw_readb(addr); n = addr % 4; @@ -174,20 +174,19 @@ __ixp4xx_readb(const volatile void __iomem *p) return data >> (8*n); } -static inline void -__ixp4xx_readsb(const volatile void __iomem *bus_addr, u8 *vaddr, u32 count) +static inline void __indirect_readsb(const volatile void __iomem *bus_addr, + u8 *vaddr, u32 count) { while (count--) *vaddr++ = readb(bus_addr); } -static inline unsigned short -__ixp4xx_readw(const volatile void __iomem *p) +static inline unsigned short __indirect_readw(const volatile void __iomem *p) { u32 addr = (u32)p; u32 n, byte_enables, data; - if (addr >= VMALLOC_START) + if (!is_pci_memory(addr)) return __raw_readw(addr); n = addr % 4; @@ -198,20 +197,19 @@ __ixp4xx_readw(const volatile void __iomem *p) return data>>(8*n); } -static inline void -__ixp4xx_readsw(const volatile void __iomem *bus_addr, u16 *vaddr, u32 count) +static inline void __indirect_readsw(const volatile void __iomem *bus_addr, + u16 *vaddr, u32 count) { while (count--) *vaddr++ = readw(bus_addr); } -static inline unsigned long -__ixp4xx_readl(const volatile void __iomem *p) +static inline unsigned long __indirect_readl(const volatile void __iomem *p) { u32 addr = (__force u32)p; u32 data; - if (addr >= VMALLOC_START) + if (!is_pci_memory(addr)) return __raw_readl(p); if (ixp4xx_pci_read(addr, NP_CMD_MEMREAD, &data)) @@ -220,8 +218,8 @@ __ixp4xx_readl(const volatile void __iomem *p) return data; } -static inline void -__ixp4xx_readsl(const volatile void __iomem *bus_addr, u32 *vaddr, u32 count) +static inline void __indirect_readsl(const volatile void __iomem *bus_addr, + u32 *vaddr, u32 count) { while (count--) *vaddr++ = readl(bus_addr); @@ -235,7 +233,7 @@ __ixp4xx_readsl(const volatile void __iomem *bus_addr, u32 *vaddr, u32 count) #define memcpy_fromio(a,c,l) _memcpy_fromio((a),(c),(l)) #define memcpy_toio(c,a,l) _memcpy_toio((c),(a),(l)) -#endif +#endif /* CONFIG_IXP4XX_INDIRECT_PCI */ #ifndef CONFIG_PCI @@ -250,25 +248,8 @@ __ixp4xx_readsl(const volatile void __iomem *bus_addr, u32 *vaddr, u32 count) * transaction. This means that we need to override the default * I/O functions. */ -#define outb(p, v) __ixp4xx_outb(p, v) -#define outw(p, v) __ixp4xx_outw(p, v) -#define outl(p, v) __ixp4xx_outl(p, v) - -#define outsb(p, v, l) __ixp4xx_outsb(p, v, l) -#define outsw(p, v, l) __ixp4xx_outsw(p, v, l) -#define outsl(p, v, l) __ixp4xx_outsl(p, v, l) -#define inb(p) __ixp4xx_inb(p) -#define inw(p) __ixp4xx_inw(p) -#define inl(p) __ixp4xx_inl(p) - -#define insb(p, v, l) __ixp4xx_insb(p, v, l) -#define insw(p, v, l) __ixp4xx_insw(p, v, l) -#define insl(p, v, l) __ixp4xx_insl(p, v, l) - - -static inline void -__ixp4xx_outb(u8 value, u32 addr) +static inline void outb(u8 value, u32 addr) { u32 n, byte_enables, data; n = addr % 4; @@ -277,15 +258,13 @@ __ixp4xx_outb(u8 value, u32 addr) ixp4xx_pci_write(addr, byte_enables | NP_CMD_IOWRITE, data); } -static inline void -__ixp4xx_outsb(u32 io_addr, const u8 *vaddr, u32 count) +static inline void outsb(u32 io_addr, const u8 *vaddr, u32 count) { while (count--) outb(*vaddr++, io_addr); } -static inline void -__ixp4xx_outw(u16 value, u32 addr) +static inline void outw(u16 value, u32 addr) { u32 n, byte_enables, data; n = addr % 4; @@ -294,28 +273,24 @@ __ixp4xx_outw(u16 value, u32 addr) ixp4xx_pci_write(addr, byte_enables | NP_CMD_IOWRITE, data); } -static inline void -__ixp4xx_outsw(u32 io_addr, const u16 *vaddr, u32 count) +static inline void outsw(u32 io_addr, const u16 *vaddr, u32 count) { while (count--) outw(cpu_to_le16(*vaddr++), io_addr); } -static inline void -__ixp4xx_outl(u32 value, u32 addr) +static inline void outl(u32 value, u32 addr) { ixp4xx_pci_write(addr, NP_CMD_IOWRITE, value); } -static inline void -__ixp4xx_outsl(u32 io_addr, const u32 *vaddr, u32 count) +static inline void outsl(u32 io_addr, const u32 *vaddr, u32 count) { while (count--) - outl(*vaddr++, io_addr); + outl(cpu_to_le32(*vaddr++), io_addr); } -static inline u8 -__ixp4xx_inb(u32 addr) +static inline u8 inb(u32 addr) { u32 n, byte_enables, data; n = addr % 4; @@ -326,15 +301,13 @@ __ixp4xx_inb(u32 addr) return data >> (8*n); } -static inline void -__ixp4xx_insb(u32 io_addr, u8 *vaddr, u32 count) +static inline void insb(u32 io_addr, u8 *vaddr, u32 count) { while (count--) *vaddr++ = inb(io_addr); } -static inline u16 -__ixp4xx_inw(u32 addr) +static inline u16 inw(u32 addr) { u32 n, byte_enables, data; n = addr % 4; @@ -345,15 +318,13 @@ __ixp4xx_inw(u32 addr) return data>>(8*n); } -static inline void -__ixp4xx_insw(u32 io_addr, u16 *vaddr, u32 count) +static inline void insw(u32 io_addr, u16 *vaddr, u32 count) { while (count--) *vaddr++ = le16_to_cpu(inw(io_addr)); } -static inline u32 -__ixp4xx_inl(u32 addr) +static inline u32 inl(u32 addr) { u32 data; if (ixp4xx_pci_read(addr, NP_CMD_IOREAD, &data)) @@ -362,11 +333,10 @@ __ixp4xx_inl(u32 addr) return data; } -static inline void -__ixp4xx_insl(u32 io_addr, u32 *vaddr, u32 count) +static inline void insl(u32 io_addr, u32 *vaddr, u32 count) { while (count--) - *vaddr++ = inl(io_addr); + *vaddr++ = le32_to_cpu(inl(io_addr)); } #define PIO_OFFSET 0x10000UL @@ -374,194 +344,183 @@ __ixp4xx_insl(u32 io_addr, u32 *vaddr, u32 count) #define __is_io_address(p) (((unsigned long)p >= PIO_OFFSET) && \ ((unsigned long)p <= (PIO_MASK + PIO_OFFSET))) -static inline unsigned int -__ixp4xx_ioread8(const void __iomem *addr) + +#define ioread8(p) ioread8(p) +static inline unsigned int ioread8(const void __iomem *addr) { unsigned long port = (unsigned long __force)addr; if (__is_io_address(port)) - return (unsigned int)__ixp4xx_inb(port & PIO_MASK); + return (unsigned int)inb(port & PIO_MASK); else #ifndef CONFIG_IXP4XX_INDIRECT_PCI return (unsigned int)__raw_readb(port); #else - return (unsigned int)__ixp4xx_readb(addr); + return (unsigned int)__indirect_readb(addr); #endif } -static inline void -__ixp4xx_ioread8_rep(const void __iomem *addr, void *vaddr, u32 count) +#define ioread8_rep(p, v, c) ioread8_rep(p, v, c) +static inline void ioread8_rep(const void __iomem *addr, void *vaddr, u32 count) { unsigned long port = (unsigned long __force)addr; if (__is_io_address(port)) - __ixp4xx_insb(port & PIO_MASK, vaddr, count); + insb(port & PIO_MASK, vaddr, count); else #ifndef CONFIG_IXP4XX_INDIRECT_PCI __raw_readsb(addr, vaddr, count); #else - __ixp4xx_readsb(addr, vaddr, count); + __indirect_readsb(addr, vaddr, count); #endif } -static inline unsigned int -__ixp4xx_ioread16(const void __iomem *addr) +#define ioread16(p) ioread16(p) +static inline unsigned int ioread16(const void __iomem *addr) { unsigned long port = (unsigned long __force)addr; if (__is_io_address(port)) - return (unsigned int)__ixp4xx_inw(port & PIO_MASK); + return (unsigned int)inw(port & PIO_MASK); else #ifndef CONFIG_IXP4XX_INDIRECT_PCI return le16_to_cpu(__raw_readw((u32)port)); #else - return (unsigned int)__ixp4xx_readw(addr); + return (unsigned int)__indirect_readw(addr); #endif } -static inline void -__ixp4xx_ioread16_rep(const void __iomem *addr, void *vaddr, u32 count) +#define ioread16_rep(p, v, c) ioread16_rep(p, v, c) +static inline void ioread16_rep(const void __iomem *addr, void *vaddr, + u32 count) { unsigned long port = (unsigned long __force)addr; if (__is_io_address(port)) - __ixp4xx_insw(port & PIO_MASK, vaddr, count); + insw(port & PIO_MASK, vaddr, count); else #ifndef CONFIG_IXP4XX_INDIRECT_PCI __raw_readsw(addr, vaddr, count); #else - __ixp4xx_readsw(addr, vaddr, count); + __indirect_readsw(addr, vaddr, count); #endif } -static inline unsigned int -__ixp4xx_ioread32(const void __iomem *addr) +#define ioread32(p) ioread32(p) +static inline unsigned int ioread32(const void __iomem *addr) { unsigned long port = (unsigned long __force)addr; if (__is_io_address(port)) - return (unsigned int)__ixp4xx_inl(port & PIO_MASK); + return (unsigned int)inl(port & PIO_MASK); else { #ifndef CONFIG_IXP4XX_INDIRECT_PCI return le32_to_cpu((__force __le32)__raw_readl(addr)); #else - return (unsigned int)__ixp4xx_readl(addr); + return (unsigned int)__indirect_readl(addr); #endif } } -static inline void -__ixp4xx_ioread32_rep(const void __iomem *addr, void *vaddr, u32 count) +#define ioread32_rep(p, v, c) ioread32_rep(p, v, c) +static inline void ioread32_rep(const void __iomem *addr, void *vaddr, + u32 count) { unsigned long port = (unsigned long __force)addr; if (__is_io_address(port)) - __ixp4xx_insl(port & PIO_MASK, vaddr, count); + insl(port & PIO_MASK, vaddr, count); else #ifndef CONFIG_IXP4XX_INDIRECT_PCI __raw_readsl(addr, vaddr, count); #else - __ixp4xx_readsl(addr, vaddr, count); + __indirect_readsl(addr, vaddr, count); #endif } -static inline void -__ixp4xx_iowrite8(u8 value, void __iomem *addr) +#define iowrite8(v, p) iowrite8(v, p) +static inline void iowrite8(u8 value, void __iomem *addr) { unsigned long port = (unsigned long __force)addr; if (__is_io_address(port)) - __ixp4xx_outb(value, port & PIO_MASK); + outb(value, port & PIO_MASK); else #ifndef CONFIG_IXP4XX_INDIRECT_PCI __raw_writeb(value, port); #else - __ixp4xx_writeb(value, addr); + __indirect_writeb(value, addr); #endif } -static inline void -__ixp4xx_iowrite8_rep(void __iomem *addr, const void *vaddr, u32 count) +#define iowrite8_rep(p, v, c) iowrite8_rep(p, v, c) +static inline void iowrite8_rep(void __iomem *addr, const void *vaddr, + u32 count) { unsigned long port = (unsigned long __force)addr; if (__is_io_address(port)) - __ixp4xx_outsb(port & PIO_MASK, vaddr, count); + outsb(port & PIO_MASK, vaddr, count); else #ifndef CONFIG_IXP4XX_INDIRECT_PCI __raw_writesb(addr, vaddr, count); #else - __ixp4xx_writesb(addr, vaddr, count); + __indirect_writesb(addr, vaddr, count); #endif } -static inline void -__ixp4xx_iowrite16(u16 value, void __iomem *addr) +#define iowrite16(v, p) iowrite16(v, p) +static inline void iowrite16(u16 value, void __iomem *addr) { unsigned long port = (unsigned long __force)addr; if (__is_io_address(port)) - __ixp4xx_outw(value, port & PIO_MASK); + outw(value, port & PIO_MASK); else #ifndef CONFIG_IXP4XX_INDIRECT_PCI __raw_writew(cpu_to_le16(value), addr); #else - __ixp4xx_writew(value, addr); + __indirect_writew(value, addr); #endif } -static inline void -__ixp4xx_iowrite16_rep(void __iomem *addr, const void *vaddr, u32 count) +#define iowrite16_rep(p, v, c) iowrite16_rep(p, v, c) +static inline void iowrite16_rep(void __iomem *addr, const void *vaddr, + u32 count) { unsigned long port = (unsigned long __force)addr; if (__is_io_address(port)) - __ixp4xx_outsw(port & PIO_MASK, vaddr, count); + outsw(port & PIO_MASK, vaddr, count); else #ifndef CONFIG_IXP4XX_INDIRECT_PCI __raw_writesw(addr, vaddr, count); #else - __ixp4xx_writesw(addr, vaddr, count); + __indirect_writesw(addr, vaddr, count); #endif } -static inline void -__ixp4xx_iowrite32(u32 value, void __iomem *addr) +#define iowrite32(v, p) iowrite32(v, p) +static inline void iowrite32(u32 value, void __iomem *addr) { unsigned long port = (unsigned long __force)addr; if (__is_io_address(port)) - __ixp4xx_outl(value, port & PIO_MASK); + outl(value, port & PIO_MASK); else #ifndef CONFIG_IXP4XX_INDIRECT_PCI __raw_writel((u32 __force)cpu_to_le32(value), addr); #else - __ixp4xx_writel(value, addr); + __indirect_writel(value, addr); #endif } -static inline void -__ixp4xx_iowrite32_rep(void __iomem *addr, const void *vaddr, u32 count) +#define iowrite32_rep(p, v, c) iowrite32_rep(p, v, c) +static inline void iowrite32_rep(void __iomem *addr, const void *vaddr, + u32 count) { unsigned long port = (unsigned long __force)addr; if (__is_io_address(port)) - __ixp4xx_outsl(port & PIO_MASK, vaddr, count); + outsl(port & PIO_MASK, vaddr, count); else #ifndef CONFIG_IXP4XX_INDIRECT_PCI __raw_writesl(addr, vaddr, count); #else - __ixp4xx_writesl(addr, vaddr, count); + __indirect_writesl(addr, vaddr, count); #endif } -#define ioread8(p) __ixp4xx_ioread8(p) -#define ioread16(p) __ixp4xx_ioread16(p) -#define ioread32(p) __ixp4xx_ioread32(p) - -#define ioread8_rep(p, v, c) __ixp4xx_ioread8_rep(p, v, c) -#define ioread16_rep(p, v, c) __ixp4xx_ioread16_rep(p, v, c) -#define ioread32_rep(p, v, c) __ixp4xx_ioread32_rep(p, v, c) - -#define iowrite8(v,p) __ixp4xx_iowrite8(v,p) -#define iowrite16(v,p) __ixp4xx_iowrite16(v,p) -#define iowrite32(v,p) __ixp4xx_iowrite32(v,p) - -#define iowrite8_rep(p, v, c) __ixp4xx_iowrite8_rep(p, v, c) -#define iowrite16_rep(p, v, c) __ixp4xx_iowrite16_rep(p, v, c) -#define iowrite32_rep(p, v, c) __ixp4xx_iowrite32_rep(p, v, c) - #define ioport_map(port, nr) ((void __iomem*)(port + PIO_OFFSET)) #define ioport_unmap(addr) -#endif // !CONFIG_PCI - -#endif // __ASM_ARM_ARCH_IO_H +#endif /* CONFIG_PCI */ +#endif /* __ASM_ARM_ARCH_IO_H */ |