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| author | Paolo Bonzini <pbonzini@redhat.com> | 2015-05-20 17:09:34 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-05-21 11:44:57 +0200 |
| commit | eaae11e17f022188755c67e4dd3436875e84110d (patch) | |
| tree | 35625017b95776f3eb2470705cb3af2b44687548 /include/pci.h | |
| parent | edba90fb16ec7224da591ab8f83efe3673853a3f (diff) | |
| download | qboot-eaae11e17f022188755c67e4dd3436875e84110d.zip qboot-eaae11e17f022188755c67e4dd3436875e84110d.tar.gz qboot-eaae11e17f022188755c67e4dd3436875e84110d.tar.bz2 | |
make a bootable BIOS
includes source from kvm-unit-tests
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include/pci.h')
| -rw-r--r-- | include/pci.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/include/pci.h b/include/pci.h new file mode 100644 index 0000000..e6b445c --- /dev/null +++ b/include/pci.h @@ -0,0 +1,44 @@ +#ifndef _PCI_H +#define _PCI_H + +#include "ioport.h" + +static inline void pci_config_writel(uint16_t bdf, uint32_t addr, uint32_t val) +{ + outl(0xcf8, 0x80000000 | (bdf << 8) | (addr & 0xfc)); + outl(0xcfc, val); +} + +void pci_config_writew(uint16_t bdf, uint32_t addr, uint16_t val) +{ + outl(0xcf8, 0x80000000 | (bdf << 8) | (addr & 0xfc)); + outw(0xcfc | (addr & 2), val); +} + +void pci_config_writeb(uint16_t bdf, uint32_t addr, uint8_t val) +{ + outl(0xcf8, 0x80000000 | (bdf << 8) | (addr & 0xfc)); + outb(0xcfc | (addr & 3), val); +} + +uint32_t pci_config_readl(uint16_t bdf, uint32_t addr) +{ + outl(0xcf8, 0x80000000 | (bdf << 8) | (addr & 0xfc)); + return inl(0xcfc); +} + +uint16_t pci_config_readw(uint16_t bdf, uint32_t addr) +{ + outl(0xcf8, 0x80000000 | (bdf << 8) | (addr & 0xfc)); + return inw(0xcfc | (addr & 2)); +} + +uint8_t pci_config_readb(uint16_t bdf, uint32_t addr) +{ + outl(0xcf8, 0x80000000 | (bdf << 8) | (addr & 0xfc)); + return inb(0xcfc | (addr & 3)); +} + +#define PCI_VENDOR_ID 0 + +#endif |