List PCI devices

kernel/pci/pci.h

@@ -0,0 +1,88 @@
+#ifndef PCI_PCI_H_
+#define PCI_PCI_H_
+
+#include <stdint.h>
+#include <stddef.h>
+
+#define PCI_MAKE_ID(bus, dev, fn) (((bus)<<16) | ((dev)<<11) | ((fn)<<8))
+
+#define PCI_CONFIG_ADDR 0xCF8
+#define PCI_CONFIG_DATA 0xCFC
+
+#define PCI_MULTIFN         0x80
+#define PCI_GENERIC         0x00
+#define PCI_PCI_BRIDGE      0x01
+#define PCI_CARDBUS_BRIDGE  0x02
+
+#define PCI_VENDORID     0x00
+#define PCI_DEVICEID     0x02
+#define PCI_CMD          0x04
+#define PCI_STATUS       0x06
+#define PCI_REVID        0x08
+#define PCI_PROGINTF     0x09
+#define PCI_SUBCLASS     0x0A
+#define PCI_CLASSCODE    0x0B
+#define PCI_CACHELINESZ  0x0C
+#define PCI_LATENCY      0x0D
+#define PCI_HDRTYPE      0x0E
+#define PCI_BIST         0x0F
+
+#define PCI_BAR0              0x10
+#define PCI_BAR1              0x14
+#define PCI_BAR2              0x18
+#define PCI_BAR3              0x1C
+#define PCI_BAR4              0x20
+#define PCI_BAR5              0x24
+#define PCI_CARBUS_CIS        0x28
+#define PCI_SUBSYS_VENDORID   0x2C
+#define PCI_SUBSYS_DEVICEID   0x2E
+#define PCI_EXPROM            0x30
+#define PCI_CAP               0x34
+#define PCI_INTRLINE          0x3C
+#define PCI_INTRPIN           0x3D
+#define PCI_MIN_GRANT         0x3E
+#define PCI_MAX_LATENCY       0x3F
+
+#define PCI_BAR_IO        0x01
+#define PCI_BAR_MEM32     0x02
+#define PCI_BAR_MEM64     0x04
+#define PCI_BAR_PREFETCH  0x08
+
+typedef struct {
+  union { void *addr; uint16_t port; } u;
+  uint64_t size;
+  uint32_t flags;
+} PciBar;
+
+typedef struct {
+  uint16_t vendorid;
+  uint16_t deviceid;
+  uint8_t classcode;
+  uint8_t subclass;
+  uint8_t progintf;
+
+  uint32_t bus, dev, fn;
+} PciDevInfo;
+
+typedef struct {
+  uint16_t k1;
+  uint16_t k2;
+  void (*initfn)(PciDevInfo *info);
+} PciMatch;
+
+#define PCI_DEV_MAGIC 0xAB0BA
+
+typedef struct {
+  PciDevInfo devinfo;
+} PciDev;
+
+uint8_t pci_read8(uint32_t id, uint32_t reg);
+uint16_t pci_read16(uint32_t id, uint32_t reg);
+uint32_t pci_read32(uint32_t id, uint32_t reg);
+void pci_write8(uint32_t id, uint32_t reg, uint8_t v);
+void pci_write16(uint32_t id, uint32_t reg, uint16_t v);
+void pci_write32(uint32_t id, uint32_t reg, uint32_t v);
+
+void pci_init(void);
+
+#endif // PCI_PCI_H_