1 #ifndef PPC_PCI_H
2 #define PPC_PCI_H
3
4 #include "asm/io.h"
5
6 #if !(defined(PCI_CONFIG_1) || defined(PCI_CONFIG_2))
7 #define PCI_CONFIG_1 1 /* default */
8 #endif
9
10 #ifdef PCI_CONFIG_1
11
12 /* PCI Configuration Mechanism #1 */
13
14 #define PCI_ADDR(bus, dev, fn) \
15 ((pci_addr) (0x80000000u \
16 | (uint32_t) (bus) << 16 \
17 | (uint32_t) (dev) << 11 \
18 | (uint32_t) (fn) << 8))
19
20 #define PCI_BUS(pcidev) ((uint8_t) ((pcidev) >> 16))
21 #define PCI_DEV(pcidev) ((uint8_t) ((pcidev) >> 11) & 0x1f)
22 #define PCI_FN(pcidev) ((uint8_t) ((pcidev) >> 8) & 7)
23
pci_config_read8(pci_addr dev,uint8_t reg)24 static inline uint8_t pci_config_read8(pci_addr dev, uint8_t reg)
25 {
26 uint8_t res;
27 out_le32((unsigned *)arch->cfg_addr, dev | (reg & ~3));
28 res = in_8((unsigned char*)(arch->cfg_data + (reg & 3)));
29 return res;
30 }
31
pci_config_read16(pci_addr dev,uint8_t reg)32 static inline uint16_t pci_config_read16(pci_addr dev, uint8_t reg)
33 {
34 uint16_t res;
35 out_le32((unsigned *)arch->cfg_addr, dev | (reg & ~3));
36 res = in_le16((unsigned short*)(arch->cfg_data + (reg & 2)));
37 return res;
38 }
39
pci_config_read32(pci_addr dev,uint8_t reg)40 static inline uint32_t pci_config_read32(pci_addr dev, uint8_t reg)
41 {
42 uint32_t res;
43 out_le32((unsigned *)arch->cfg_addr, dev | reg);
44 res = in_le32((unsigned *)(arch->cfg_data));
45 return res;
46 }
47
pci_config_write8(pci_addr dev,uint8_t reg,uint8_t val)48 static inline void pci_config_write8(pci_addr dev, uint8_t reg, uint8_t val)
49 {
50 out_le32((unsigned *)arch->cfg_addr, dev | (reg & ~3));
51 out_8((unsigned char*)(arch->cfg_data + (reg & 3)), val);
52 }
53
pci_config_write16(pci_addr dev,uint8_t reg,uint16_t val)54 static inline void pci_config_write16(pci_addr dev, uint8_t reg, uint16_t val)
55 {
56 out_le32((unsigned *)arch->cfg_addr, dev | (reg & ~3));
57 out_le16((unsigned short *)(arch->cfg_data + (reg & 2)), val);
58 }
59
pci_config_write32(pci_addr dev,uint8_t reg,uint32_t val)60 static inline void pci_config_write32(pci_addr dev, uint8_t reg, uint32_t val)
61 {
62 out_le32((unsigned *)arch->cfg_addr, dev | reg);
63 out_le32((unsigned *)(arch->cfg_data), val);
64 }
65 #else /* !PCI_CONFIG_1 */
66 #error PCI Configuration Mechanism is not specified or implemented
67 #endif
68
69 #endif /* PPC_PCI_H */
70