diff options
author | Arnd Bergmann <arnd@arndb.de> | 2012-02-29 21:36:27 -0600 |
---|---|---|
committer | Rob Herring <rob.herring@calxeda.com> | 2012-07-26 09:10:02 -0500 |
commit | 5b334eb2a9422f4658f353a550db10b8a6b691f9 (patch) | |
tree | aa22fb56eb8475dbf58bf593ae704663ca343f5d /arch/arm | |
parent | 0a4b8c654615be5dd12d67e951446095bef8b565 (diff) | |
download | linux-5b334eb2a9422f4658f353a550db10b8a6b691f9.tar.bz2 |
iop13xx: use more regular PCI I/O space handling
iop13xx confuses I/O port numbers with physical addresses, which breaks
legacy ISA I/O access behind PCI bridges and makes it unnecessarily hard
to unify the inb/outb accessors with other platforms. This removes the
special-casing and just puts all I/O ports into a single 128KB virtually
mapped I/O port range starting at port zero.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arm')
-rw-r--r-- | arch/arm/mach-iop13xx/include/mach/io.h | 6 | ||||
-rw-r--r-- | arch/arm/mach-iop13xx/include/mach/iop13xx.h | 12 | ||||
-rw-r--r-- | arch/arm/mach-iop13xx/io.c | 27 | ||||
-rw-r--r-- | arch/arm/mach-iop13xx/pci.c | 12 |
4 files changed, 12 insertions, 45 deletions
diff --git a/arch/arm/mach-iop13xx/include/mach/io.h b/arch/arm/mach-iop13xx/include/mach/io.h index f13188518025..e197cb8994ac 100644 --- a/arch/arm/mach-iop13xx/include/mach/io.h +++ b/arch/arm/mach-iop13xx/include/mach/io.h @@ -19,10 +19,10 @@ #ifndef __ASM_ARM_ARCH_IO_H #define __ASM_ARM_ARCH_IO_H -#define IO_SPACE_LIMIT 0xffffffff +#include <mach/iop13xx.h> -#define __io(a) __iop13xx_io(a) +#define IO_SPACE_LIMIT (IOP13XX_PCIE_IO_WINDOW_SIZE + IOP13XX_PCIX_IO_WINDOW_SIZE - 1) -extern void __iomem * __iop13xx_io(unsigned long io_addr); +#define __io(a) (IOP13XX_PCIX_LOWER_IO_VA + ((a) & IO_SPACE_LIMIT)) #endif diff --git a/arch/arm/mach-iop13xx/include/mach/iop13xx.h b/arch/arm/mach-iop13xx/include/mach/iop13xx.h index e190dcd7d72d..d3777dbc2e8b 100644 --- a/arch/arm/mach-iop13xx/include/mach/iop13xx.h +++ b/arch/arm/mach-iop13xx/include/mach/iop13xx.h @@ -69,17 +69,15 @@ extern unsigned long get_iop_tick_rate(void); * 0x8000.0000 + 928M 0x2.8000.0000 (ioremap) PCIE outbound memory window * * IO MAP - * 0x1000 + 64K 0x0.fffb.1000 0xfec6.1000 PCIX outbound i/o window + * 0x1000 + 64K 0x0.fffb.1000 0xfed6.1000 PCIX outbound i/o window * 0x1000 + 64K 0x0.fffd.1000 0xfed7.1000 PCIE outbound i/o window */ #define IOP13XX_PCIX_IO_WINDOW_SIZE 0x10000UL #define IOP13XX_PCIX_LOWER_IO_PA 0xfffb0000UL -#define IOP13XX_PCIX_LOWER_IO_VA 0xfec60000UL +#define IOP13XX_PCIX_LOWER_IO_VA 0xfed60000UL #define IOP13XX_PCIX_LOWER_IO_BA 0x0UL /* OIOTVR */ #define IOP13XX_PCIX_IO_BUS_OFFSET 0x1000UL -#define IOP13XX_PCIX_UPPER_IO_PA (IOP13XX_PCIX_LOWER_IO_PA +\ - IOP13XX_PCIX_IO_WINDOW_SIZE - 1) -#define IOP13XX_PCIX_UPPER_IO_VA (IOP13XX_PCIX_LOWER_IO_VA +\ +#define IOP13XX_PCIX_UPPER_IO_BA (IOP13XX_PCIX_LOWER_IO_BA +\ IOP13XX_PCIX_IO_WINDOW_SIZE - 1) #define IOP13XX_PCIX_IO_PHYS_TO_VIRT(addr) (u32) ((u32) addr -\ (IOP13XX_PCIX_LOWER_IO_PA\ @@ -108,10 +106,6 @@ extern unsigned long get_iop_tick_rate(void); #define IOP13XX_PCIE_LOWER_IO_VA 0xfed70000UL #define IOP13XX_PCIE_LOWER_IO_BA 0x0UL /* OIOTVR */ #define IOP13XX_PCIE_IO_BUS_OFFSET 0x1000UL -#define IOP13XX_PCIE_UPPER_IO_PA (IOP13XX_PCIE_LOWER_IO_PA +\ - IOP13XX_PCIE_IO_WINDOW_SIZE - 1) -#define IOP13XX_PCIE_UPPER_IO_VA (IOP13XX_PCIE_LOWER_IO_VA +\ - IOP13XX_PCIE_IO_WINDOW_SIZE - 1) #define IOP13XX_PCIE_UPPER_IO_BA (IOP13XX_PCIE_LOWER_IO_BA +\ IOP13XX_PCIE_IO_WINDOW_SIZE - 1) #define IOP13XX_PCIE_IO_PHYS_TO_VIRT(addr) (u32) ((u32) addr -\ diff --git a/arch/arm/mach-iop13xx/io.c b/arch/arm/mach-iop13xx/io.c index 3c364198db9c..851dc8f2b6b5 100644 --- a/arch/arm/mach-iop13xx/io.c +++ b/arch/arm/mach-iop13xx/io.c @@ -23,25 +23,6 @@ #include "pci.h" -void * __iomem __iop13xx_io(unsigned long io_addr) -{ - void __iomem * io_virt; - - switch (io_addr) { - case IOP13XX_PCIE_LOWER_IO_PA ... IOP13XX_PCIE_UPPER_IO_PA: - io_virt = (void *) IOP13XX_PCIE_IO_PHYS_TO_VIRT(io_addr); - break; - case IOP13XX_PCIX_LOWER_IO_PA ... IOP13XX_PCIX_UPPER_IO_PA: - io_virt = (void *) IOP13XX_PCIX_IO_PHYS_TO_VIRT(io_addr); - break; - default: - BUG(); - } - - return io_virt; -} -EXPORT_SYMBOL(__iop13xx_io); - static void __iomem *__iop13xx_ioremap_caller(unsigned long cookie, size_t size, unsigned int mtype, void *caller) { @@ -67,12 +48,6 @@ static void __iomem *__iop13xx_ioremap_caller(unsigned long cookie, (cookie - IOP13XX_PBI_LOWER_MEM_RA), size, mtype, __builtin_return_address(0)); break; - case IOP13XX_PCIE_LOWER_IO_PA ... IOP13XX_PCIE_UPPER_IO_PA: - retval = (void *) IOP13XX_PCIE_IO_PHYS_TO_VIRT(cookie); - break; - case IOP13XX_PCIX_LOWER_IO_PA ... IOP13XX_PCIX_UPPER_IO_PA: - retval = (void *) IOP13XX_PCIX_IO_PHYS_TO_VIRT(cookie); - break; case IOP13XX_PMMR_PHYS_MEM_BASE ... IOP13XX_PMMR_UPPER_MEM_PA: retval = (void *) IOP13XX_PMMR_PHYS_TO_VIRT(cookie); break; @@ -99,8 +74,6 @@ static void __iop13xx_iounmap(volatile void __iomem *addr) goto skip; switch ((u32) addr) { - case IOP13XX_PCIE_LOWER_IO_VA ... IOP13XX_PCIE_UPPER_IO_VA: - case IOP13XX_PCIX_LOWER_IO_VA ... IOP13XX_PCIX_UPPER_IO_VA: case IOP13XX_PMMR_VIRT_MEM_BASE ... IOP13XX_PMMR_UPPER_MEM_VA: goto skip; } diff --git a/arch/arm/mach-iop13xx/pci.c b/arch/arm/mach-iop13xx/pci.c index 861cb12ef436..1bb905adb3dd 100644 --- a/arch/arm/mach-iop13xx/pci.c +++ b/arch/arm/mach-iop13xx/pci.c @@ -1042,8 +1042,8 @@ int iop13xx_pci_setup(int nr, struct pci_sys_data *sys) << IOP13XX_ATUX_PCIXSR_FUNC_NUM; __raw_writel(pcixsr, IOP13XX_ATUX_PCIXSR); - res[0].start = IOP13XX_PCIX_LOWER_IO_PA + IOP13XX_PCIX_IO_BUS_OFFSET; - res[0].end = IOP13XX_PCIX_UPPER_IO_PA; + res[0].start = IOP13XX_PCIX_LOWER_IO_BA + IOP13XX_PCIX_IO_BUS_OFFSET; + res[0].end = IOP13XX_PCIX_UPPER_IO_BA; res[0].name = "IQ81340 ATUX PCI I/O Space"; res[0].flags = IORESOURCE_IO; @@ -1052,7 +1052,7 @@ int iop13xx_pci_setup(int nr, struct pci_sys_data *sys) res[1].name = "IQ81340 ATUX PCI Memory Space"; res[1].flags = IORESOURCE_MEM; sys->mem_offset = IOP13XX_PCIX_MEM_OFFSET; - sys->io_offset = IOP13XX_PCIX_LOWER_IO_PA; + sys->io_offset = IOP13XX_PCIX_LOWER_IO_BA; break; case IOP13XX_INIT_ATU_ATUE: /* Note: the function number field in the PCSR is ro */ @@ -1063,8 +1063,8 @@ int iop13xx_pci_setup(int nr, struct pci_sys_data *sys) __raw_writel(pcsr, IOP13XX_ATUE_PCSR); - res[0].start = IOP13XX_PCIE_LOWER_IO_PA + IOP13XX_PCIE_IO_BUS_OFFSET; - res[0].end = IOP13XX_PCIE_UPPER_IO_PA; + res[0].start = IOP13XX_PCIE_LOWER_IO_BA + IOP13XX_PCIE_IO_BUS_OFFSET; + res[0].end = IOP13XX_PCIE_UPPER_IO_BA; res[0].name = "IQ81340 ATUE PCI I/O Space"; res[0].flags = IORESOURCE_IO; @@ -1073,7 +1073,7 @@ int iop13xx_pci_setup(int nr, struct pci_sys_data *sys) res[1].name = "IQ81340 ATUE PCI Memory Space"; res[1].flags = IORESOURCE_MEM; sys->mem_offset = IOP13XX_PCIE_MEM_OFFSET; - sys->io_offset = IOP13XX_PCIE_LOWER_IO_PA; + sys->io_offset = IOP13XX_PCIE_LOWER_IO_BA; sys->map_irq = iop13xx_pcie_map_irq; break; default: |