diff options
author | Magnus Damm <magnus.damm@gmail.com> | 2008-02-19 12:35:31 (GMT) |
---|---|---|
committer | Paul Mundt <lethal@linux-sh.org> | 2009-04-16 07:00:14 (GMT) |
commit | 8ce0143b11cdc519b8e1fd94a262b654ef0bc3ab (patch) | |
tree | 912403b5b8b853ca1479e95590ac2fd057de0030 | |
parent | ef339f241b08a16af58897e6288ba200e0c7a8c7 (diff) | |
download | linux-8ce0143b11cdc519b8e1fd94a262b654ef0bc3ab.tar.xz |
sh: pci io port base address code
Adds a __get_pci_io_base() function which is used to match a port range
against struct pci_channel. This allows us to detect if a port range is
assigned to pci or happens to be legacy port io. While at it, remove unused
cpu-specific cruft.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
-rw-r--r-- | arch/sh/drivers/pci/ops-rts7751r2d.c | 1 | ||||
-rw-r--r-- | arch/sh/include/asm/pci.h | 47 | ||||
-rw-r--r-- | arch/sh/kernel/io.c | 5 |
3 files changed, 25 insertions, 28 deletions
diff --git a/arch/sh/drivers/pci/ops-rts7751r2d.c b/arch/sh/drivers/pci/ops-rts7751r2d.c index fe5a231..58ed1d5 100644 --- a/arch/sh/drivers/pci/ops-rts7751r2d.c +++ b/arch/sh/drivers/pci/ops-rts7751r2d.c @@ -68,7 +68,6 @@ static struct sh4_pci_address_map sh7751_pci_map = { int __init pcibios_init_platform(void) { - __set_io_port_base(SH7751_PCI_IO_BASE); return sh7751_pcic_init(&board_pci_channels[0], &sh7751_pci_map); } diff --git a/arch/sh/include/asm/pci.h b/arch/sh/include/asm/pci.h index ccf5c5f..bb2c2fc 100644 --- a/arch/sh/include/asm/pci.h +++ b/arch/sh/include/asm/pci.h @@ -38,33 +38,6 @@ extern struct pci_channel board_pci_channels[]; #define PCIBIOS_MIN_IO __PCI_CHAN(bus)->io_resource->start #define PCIBIOS_MIN_MEM __PCI_CHAN(bus)->mem_resource->start -/* - * I/O routine helpers - */ -#if defined(CONFIG_CPU_SUBTYPE_SH7780) || defined(CONFIG_CPU_SUBTYPE_SH7785) -#define PCI_IO_AREA 0xFE400000 -#define PCI_IO_SIZE 0x00400000 -#elif defined(CONFIG_CPU_SH5) -extern unsigned long PCI_IO_AREA; -#define PCI_IO_SIZE 0x00010000 -#else -#define PCI_IO_AREA 0xFE240000 -#define PCI_IO_SIZE 0x00040000 -#endif - -#define PCI_MEM_SIZE 0x01000000 - -#define SH4_PCIIOBR_MASK 0xFFFC0000 -#define pci_ioaddr(addr) (PCI_IO_AREA + (addr & ~SH4_PCIIOBR_MASK)) - -#if defined(CONFIG_PCI) -#define is_pci_ioaddr(port) \ - (((port) >= PCIBIOS_MIN_IO) && \ - ((port) < (PCIBIOS_MIN_IO + PCI_IO_SIZE))) -#else -#define is_pci_ioaddr(port) (0) -#endif - struct pci_dev; extern void pcibios_set_master(struct pci_dev *dev); @@ -137,11 +110,31 @@ static inline int __is_pci_memory(unsigned long phys_addr, unsigned long size) } return 0; } + +static inline void __iomem *__get_pci_io_base(unsigned long port, + unsigned long size) +{ + struct pci_channel *p; + struct resource *res; + + for (p = board_pci_channels; p->init; p++) { + res = p->io_resource; + if (p->enabled && (port >= res->start) && + (port + size) <= (res->end + 1)) + return (void __iomem *)(p->io_base + port); + } + return NULL; +} #else static inline int __is_pci_memory(unsigned long phys_addr, unsigned long size) { return 0; } +static inline void __iomem *__get_pci_io_base(unsigned long port, + unsigned long size) +{ + return NULL; +} #endif /* Board-specific fixup routines. */ diff --git a/arch/sh/kernel/io.c b/arch/sh/kernel/io.c index 29cf458..59fb020 100644 --- a/arch/sh/kernel/io.c +++ b/arch/sh/kernel/io.c @@ -12,6 +12,7 @@ * for more details. */ #include <linux/module.h> +#include <linux/pci.h> #include <asm/machvec.h> #include <asm/io.h> @@ -69,6 +70,10 @@ void __iomem *ioport_map(unsigned long port, unsigned int nr) if (ret) return ret; + ret = __get_pci_io_base(port, nr); + if (ret) + return ret; + return __ioport_map(port, nr); } EXPORT_SYMBOL(ioport_map); |