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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2 | pj | 1 | #include <ll/i386/hw-instr.h> |
| 2 | #include <ll/i386/hw-data.h> |
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| 3 | #include <ll/i386/hw-arch.h> |
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| 4 | #include <ll/i386/hw-io.h> |
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| 5 | #include <ll/i386/cons.h> |
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| 6 | #include <ll/stdlib.h> |
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| 7 | #include <drivers/llpci.h> |
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| 8 | #include <drivers/pci.h> |
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| 9 | #include <drivers/linuxpci.h> |
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| 10 | |||
| 16 | pj | 11 | #include <kernel/log.h> |
| 12 | |||
| 2 | pj | 13 | static int ndev = 0; |
| 14 | static struct pci_des pci_devs[N_MAX_DEVS]; |
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| 15 | |||
| 184 | giacomo | 16 | static int initialized = 0; |
| 17 | |||
| 2 | pj | 18 | /* scan the bus to find all the connected devices */ |
| 19 | int scan_bus(struct pci_des *p_des) |
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| 20 | { |
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| 21 | int ndev; |
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| 22 | DWORD tmp; |
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| 23 | BYTE hdr; |
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| 24 | int j, ok; |
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| 25 | BYTE bus, b; |
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| 26 | WORD dev; |
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| 27 | int present; |
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| 28 | |||
| 29 | if (pcibios_present() == 0) return -1; |
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| 30 | ndev = 0; |
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| 31 | |||
| 49 | pj | 32 | for (bus = 0; bus <= 1; bus++) { |
| 2 | pj | 33 | for (dev = 0; dev <= 0xFF; dev++) { |
| 34 | present = 0; |
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| 35 | if ((dev & 0x07) == 0) { |
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| 36 | present = pcibios_read_config_byte(bus, dev, 0x0e, &hdr); |
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| 37 | } |
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| 38 | if (hdr & 0x80) { |
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| 39 | present = 1; |
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| 40 | } |
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| 41 | if (present) { |
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| 42 | ok = pcibios_read_config_dword(bus, dev, 0, &tmp); |
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| 43 | if ( ok && (((tmp & 0xFFFF) != 0xFFFF) && ((tmp >> 16) != 0xFFFF))) { |
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| 44 | p_des[ndev].bus = bus; |
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| 45 | p_des[ndev].dev = dev; |
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| 46 | for (j = 0; j <= 255; j++) { |
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| 47 | pcibios_read_config_byte(bus, dev, j, &b); |
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| 48 | p_des[ndev].mem[j] = b; |
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| 49 | } |
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| 50 | ndev++; |
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| 51 | } |
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| 52 | } |
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| 53 | } |
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| 54 | } |
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| 55 | return ndev; |
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| 56 | } |
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| 57 | |||
| 58 | struct pci_regs *pci_device(WORD vendor, WORD device, WORD index, BYTE *bus, BYTE *dev) |
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| 59 | { |
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| 60 | int i, curr; |
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| 61 | struct pci_regs *regs; |
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| 62 | |||
| 63 | curr = 0; |
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| 64 | for (i = 0; i < ndev; i++) { |
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| 65 | regs = (struct pci_regs *)pci_devs[i].mem; |
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| 66 | if ((regs->VendorId == vendor) && (regs->DeviceId == device)) { |
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| 67 | if (curr == index) { |
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| 68 | *dev = pci_devs[i].dev; |
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| 69 | *bus = pci_devs[i].bus; |
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| 70 | return regs; |
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| 71 | } |
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| 72 | ++curr; |
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| 73 | } |
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| 74 | } |
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| 75 | return NULL; |
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| 76 | } |
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| 77 | |||
| 78 | struct pci_regs *pci_class(DWORD class_code, WORD index, BYTE *bus, BYTE *dev) |
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| 79 | { |
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| 80 | int i, curr; |
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| 81 | struct pci_regs *regs; |
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| 82 | |||
| 83 | curr = 0; |
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| 84 | for (i = 0; i < ndev; i++) { |
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| 85 | regs = (struct pci_regs *)pci_devs[i].mem; |
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| 86 | if ((regs->ClassCode << 8) == class_code) { |
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| 87 | if (curr == index) { |
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| 88 | *dev = pci_devs[i].dev; |
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| 89 | *bus = pci_devs[i].bus; |
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| 90 | return regs; |
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| 91 | } |
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| 92 | ++curr; |
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| 93 | } |
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| 94 | } |
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| 95 | return NULL; |
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| 96 | } |
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| 97 | |||
| 98 | int pcibios_find_device(WORD vendor, WORD device, WORD index, BYTE *bus, BYTE *dev) |
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| 99 | { |
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| 100 | |||
| 101 | if (pci_device(vendor, device, index, bus, dev) != NULL) { |
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| 102 | return PCIBIOS_SUCCESSFUL; |
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| 103 | } else { |
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| 104 | return PCIBIOS_DEVICE_NOT_FOUND; |
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| 105 | } |
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| 106 | } |
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| 107 | int pcibios_find_class(DWORD class_code, WORD index, BYTE *bus, BYTE *dev) |
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| 108 | { |
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| 109 | |||
| 110 | if (pci_class(class_code, index, bus, dev) != NULL) { |
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| 16 | pj | 111 | #ifdef DEBUG_PCI |
| 112 | printk(KERN_DEBUG "PCIBIOS_FIND_CLASS:" |
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| 113 | "found at bus %d, dev %d\n", *bus, *dev); |
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| 114 | #endif |
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| 2 | pj | 115 | return PCIBIOS_SUCCESSFUL; |
| 116 | } else { |
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| 117 | return PCIBIOS_DEVICE_NOT_FOUND; |
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| 118 | } |
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| 119 | } |
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| 120 | |||
| 121 | |||
| 122 | /* shows the detected devices */ |
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| 123 | void pci_show(void) |
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| 124 | { |
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| 125 | int i; |
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| 126 | struct pci_regs *r; |
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| 127 | |||
| 16 | pj | 128 | printk(KERN_INFO "DevLib PCI support\n\n"); |
| 129 | printk(KERN_INFO "PCI config type %d\n", pcibios_present()); |
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| 130 | printk(KERN_INFO "%d PCI devices found:\n\n", ndev); |
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| 2 | pj | 131 | for(i = 0; i < ndev; i++) { |
| 132 | r = (struct pci_regs *) pci_devs[i].mem; |
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| 16 | pj | 133 | printk(KERN_INFO "%d: bus %d dev %d\n", |
| 134 | i, pci_devs[i].bus, pci_devs[i].dev); |
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| 135 | printk(KERN_INFO "Vendor: %s", pci_strvendor(r->VendorId)); |
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| 136 | printk(KERN_INFO "Class: %s\n", pci_strclass(r->ClassCode << 8)); |
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| 2 | pj | 137 | } |
| 138 | } |
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| 139 | |||
| 140 | /*Linux-->unsigned long pci_init(unsigned long mem_start, unsigned long mem_end) */ |
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| 141 | /* H-PCI --> void pci_init(void) */ |
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| 142 | /* (mem_start/mem_end have no sense) */ |
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| 143 | |||
| 144 | int pci_init(void) |
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| 145 | { |
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| 184 | giacomo | 146 | if (initialized == 1) return 1; |
| 147 | |||
| 2 | pj | 148 | if (pcibios_init() == -1) { |
| 149 | return -1; |
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| 150 | } |
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| 184 | giacomo | 151 | |
| 2 | pj | 152 | ndev = scan_bus(pci_devs); |
| 184 | giacomo | 153 | |
| 154 | initialized = 1; |
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| 155 | |||
| 2 | pj | 156 | return 1; |
| 184 | giacomo | 157 | |
| 2 | pj | 158 | } |