diff options
Diffstat (limited to 'src/arch/x86/pci_ops_conf1.c')
-rw-r--r-- | src/arch/x86/pci_ops_conf1.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/src/arch/x86/pci_ops_conf1.c b/src/arch/x86/pci_ops_conf1.c new file mode 100644 index 0000000000..77df4b314f --- /dev/null +++ b/src/arch/x86/pci_ops_conf1.c @@ -0,0 +1,71 @@ +#include <console/console.h> +#include <arch/io.h> +#include <arch/pciconf.h> +#include <device/pci.h> +#include <device/pci_ids.h> +#include <device/pci_ops.h> +/* + * Functions for accessing PCI configuration space with type 1 accesses + */ + +#if !CONFIG_PCI_IO_CFG_EXT +#define CONFIG_CMD(bus,devfn, where) (0x80000000 | (bus << 16) | \ + (devfn << 8) | (where & ~3)) +#else +#define CONFIG_CMD(bus,devfn, where) (0x80000000 | (bus << 16) | \ + (devfn << 8) | ((where & 0xff) & ~3) |\ + ((where & 0xf00)<<16)) +#endif + +static uint8_t pci_conf1_read_config8(struct bus *pbus, int bus, int devfn, + int where) +{ + outl(CONFIG_CMD(bus, devfn, where), 0xCF8); + return inb(0xCFC + (where & 3)); +} + +static uint16_t pci_conf1_read_config16(struct bus *pbus, int bus, int devfn, + int where) +{ + outl(CONFIG_CMD(bus, devfn, where), 0xCF8); + return inw(0xCFC + (where & 2)); +} + +static uint32_t pci_conf1_read_config32(struct bus *pbus, int bus, int devfn, + int where) +{ + outl(CONFIG_CMD(bus, devfn, where), 0xCF8); + return inl(0xCFC); +} + +static void pci_conf1_write_config8(struct bus *pbus, int bus, int devfn, + int where, uint8_t value) +{ + outl(CONFIG_CMD(bus, devfn, where), 0xCF8); + outb(value, 0xCFC + (where & 3)); +} + +static void pci_conf1_write_config16(struct bus *pbus, int bus, int devfn, + int where, uint16_t value) +{ + outl(CONFIG_CMD(bus, devfn, where), 0xCF8); + outw(value, 0xCFC + (where & 2)); +} + +static void pci_conf1_write_config32(struct bus *pbus, int bus, int devfn, + int where, uint32_t value) +{ + outl(CONFIG_CMD(bus, devfn, where), 0xCF8); + outl(value, 0xCFC); +} + +#undef CONFIG_CMD + +const struct pci_bus_operations pci_cf8_conf1 = { + .read8 = pci_conf1_read_config8, + .read16 = pci_conf1_read_config16, + .read32 = pci_conf1_read_config32, + .write8 = pci_conf1_write_config8, + .write16 = pci_conf1_write_config16, + .write32 = pci_conf1_write_config32, +}; |