diff options
author | Ingo Molnar <mingo@elte.hu> | 2008-07-30 19:36:55 +0200 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2008-07-30 19:36:55 +0200 |
commit | bc588df79ebfb710abc27342fccf336a68ed1216 (patch) | |
tree | e50e125eaa6da83fa715704e53c1bde013d1ef8e /arch/x86/pci/early.c | |
parent | bce7f793daec3e65ec5c5705d2457b81fe7b5725 (diff) | |
parent | 15dd859cacf312f606f54502d1f66537a1e5c78c (diff) |
Merge branch 'x86/core' into x86/xsave
Diffstat (limited to 'arch/x86/pci/early.c')
-rw-r--r-- | arch/x86/pci/early.c | 72 |
1 files changed, 64 insertions, 8 deletions
diff --git a/arch/x86/pci/early.c b/arch/x86/pci/early.c index 42df4b6606d..86631ccbc25 100644 --- a/arch/x86/pci/early.c +++ b/arch/x86/pci/early.c @@ -7,15 +7,13 @@ /* Direct PCI access. This is used for PCI accesses in early boot before the PCI subsystem works. */ -#define PDprintk(x...) - u32 read_pci_config(u8 bus, u8 slot, u8 func, u8 offset) { u32 v; outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8); v = inl(0xcfc); if (v != 0xffffffff) - PDprintk("%x reading 4 from %x: %x\n", slot, offset, v); + pr_debug("%x reading 4 from %x: %x\n", slot, offset, v); return v; } @@ -24,7 +22,7 @@ u8 read_pci_config_byte(u8 bus, u8 slot, u8 func, u8 offset) u8 v; outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8); v = inb(0xcfc + (offset&3)); - PDprintk("%x reading 1 from %x: %x\n", slot, offset, v); + pr_debug("%x reading 1 from %x: %x\n", slot, offset, v); return v; } @@ -33,23 +31,30 @@ u16 read_pci_config_16(u8 bus, u8 slot, u8 func, u8 offset) u16 v; outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8); v = inw(0xcfc + (offset&2)); - PDprintk("%x reading 2 from %x: %x\n", slot, offset, v); + pr_debug("%x reading 2 from %x: %x\n", slot, offset, v); return v; } void write_pci_config(u8 bus, u8 slot, u8 func, u8 offset, u32 val) { - PDprintk("%x writing to %x: %x\n", slot, offset, val); + pr_debug("%x writing to %x: %x\n", slot, offset, val); outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8); outl(val, 0xcfc); } void write_pci_config_byte(u8 bus, u8 slot, u8 func, u8 offset, u8 val) { - PDprintk("%x writing to %x: %x\n", slot, offset, val); + pr_debug("%x writing to %x: %x\n", slot, offset, val); + outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8); + outb(val, 0xcfc + (offset&3)); +} + +void write_pci_config_16(u8 bus, u8 slot, u8 func, u8 offset, u16 val) +{ + pr_debug("%x writing to %x: %x\n", slot, offset, val); outl(0x80000000 | (bus<<16) | (slot<<11) | (func<<8) | offset, 0xcf8); - outb(val, 0xcfc); + outw(val, 0xcfc + (offset&2)); } int early_pci_allowed(void) @@ -57,3 +62,54 @@ int early_pci_allowed(void) return (pci_probe & (PCI_PROBE_CONF1|PCI_PROBE_NOEARLY)) == PCI_PROBE_CONF1; } + +void early_dump_pci_device(u8 bus, u8 slot, u8 func) +{ + int i; + int j; + u32 val; + + printk(KERN_INFO "PCI: %02x:%02x:%02x", bus, slot, func); + + for (i = 0; i < 256; i += 4) { + if (!(i & 0x0f)) + printk("\n%04x:",i); + + val = read_pci_config(bus, slot, func, i); + for (j = 0; j < 4; j++) { + printk(" %02x", val & 0xff); + val >>= 8; + } + } + printk("\n"); +} + +void early_dump_pci_devices(void) +{ + unsigned bus, slot, func; + + if (!early_pci_allowed()) + return; + + for (bus = 0; bus < 256; bus++) { + for (slot = 0; slot < 32; slot++) { + for (func = 0; func < 8; func++) { + u32 class; + u8 type; + class = read_pci_config(bus, slot, func, + PCI_CLASS_REVISION); + if (class == 0xffffffff) + break; + + early_dump_pci_device(bus, slot, func); + + /* No multi-function device? */ + type = read_pci_config_byte(bus, slot, func, + PCI_HEADER_TYPE); + if (!(type & 0x80)) + break; + } + } + } +} + |