1 | /** |
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2 | * @file |
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3 | * |
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4 | * I think this file could be made generic and put in a general pci |
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5 | * area. |
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6 | */ |
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7 | |
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8 | /* |
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9 | * COPYRIGHT (c) 1989-2012. |
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10 | * On-Line Applications Research Corporation (OAR). |
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11 | * |
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12 | * The license and distribution terms for this file may be |
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13 | * found in the file LICENSE in this distribution or at |
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14 | * http://www.rtems.com/license/LICENSE. |
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15 | */ |
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16 | |
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17 | /* |
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18 | * List all PCI Devices |
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19 | */ |
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20 | |
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21 | #define PCI_INVALID_VENDORDEVICEID 0xffffffff |
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22 | #define PCI_MULTI_FUNCTION 0x80 |
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23 | |
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24 | #define PCI_DEBUG |
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25 | |
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26 | #include <inttypes.h> |
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27 | #include <bsp/pci.h> |
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28 | #include <rtems/bspIo.h> |
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29 | #include <stdio.h> |
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30 | |
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31 | /* |
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32 | * Make device signature from bus number, device number and function |
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33 | * number |
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34 | */ |
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35 | #define PCIB_DEVSIG_MAKE(b,d,f) ((b<<8)|(d<<3)|(f)) |
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36 | |
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37 | /* |
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38 | * Extract various parts from device signature |
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39 | */ |
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40 | #define PCIB_DEVSIG_BUS(x) (((x)>>8) &0xff) |
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41 | #define PCIB_DEVSIG_DEV(x) (((x)>>3) & 0x1f) |
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42 | #define PCIB_DEVSIG_FUNC(x) ((x) & 0x7) |
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43 | |
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44 | static int print_device_config( |
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45 | int bus, |
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46 | int dev, |
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47 | int fun |
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48 | ) |
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49 | { |
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50 | uint16_t vi,di; |
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51 | uint16_t cd,st; |
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52 | uint32_t b1,b2; |
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53 | uint8_t il,ip; |
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54 | |
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55 | pci_read_config_word (bus, dev, fun, PCI_VENDOR_ID, &vi); |
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56 | pci_read_config_word (bus, dev, fun, PCI_DEVICE_ID, &di); |
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57 | pci_read_config_word (bus, dev, fun, PCI_COMMAND, &cd); |
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58 | pci_read_config_word (bus, dev, fun, PCI_STATUS, &st); |
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59 | pci_read_config_dword(bus, dev, fun, PCI_BASE_ADDRESS_0, &b1); |
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60 | pci_read_config_dword(bus, dev, fun, PCI_BASE_ADDRESS_1, &b2); |
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61 | pci_read_config_byte (bus, dev, fun, PCI_INTERRUPT_LINE, &il); |
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62 | pci_read_config_byte (bus, dev, fun, PCI_INTERRUPT_PIN, &ip); |
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63 | |
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64 | printk( |
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65 | "%3d:0x%02x:%d 0x%04x-0x%04x: 0x%04x 0x%04x 0x%08" PRIx32 |
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66 | " 0x%08" PRIx32 " %d -> %3d (=0x%02x)\n", |
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67 | bus, dev, fun, vi, di, cd, st, b1, b2, ip, il, il); |
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68 | return 0; |
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69 | } |
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70 | |
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71 | void pci_list_devices( void ) |
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72 | { |
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73 | uint32_t d; |
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74 | unsigned char bus,dev,fun,hd; |
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75 | |
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76 | printk( |
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77 | "BUS:SLOT:FUN VENDOR-DEV_ID: COMMAND STATUS BASE_ADDR0 " |
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78 | "BASE_ADDR1 IRQ_PIN -> IRQ_LINE\n" |
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79 | ); |
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80 | for (bus=0 ; bus<pci_bus_count(); bus++) { |
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81 | for (dev=0 ; dev<PCI_MAX_DEVICES; dev++) { |
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82 | for (fun=0 ; fun<PCI_MAX_FUNCTIONS; fun++) { |
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83 | /* |
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84 | * The last devfn id/slot is special; must skip it |
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85 | */ |
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86 | if (PCI_MAX_DEVICES-1==dev && PCI_MAX_FUNCTIONS-1 == fun) |
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87 | break; |
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88 | |
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89 | (void) pci_read_config_dword(bus,dev,0,PCI_VENDOR_ID,&d); |
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90 | if (PCI_INVALID_VENDORDEVICEID == d) |
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91 | continue; |
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92 | |
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93 | if ( 0 == fun ) { |
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94 | pci_read_config_byte(bus,dev,0, PCI_HEADER_TYPE, &hd); |
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95 | hd = (hd & PCI_MULTI_FUNCTION ? PCI_MAX_FUNCTIONS : 1); |
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96 | } |
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97 | |
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98 | (void)pci_read_config_dword(bus,dev,fun,PCI_VENDOR_ID,&d); |
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99 | if (PCI_INVALID_VENDORDEVICEID == d) |
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100 | continue; |
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101 | print_device_config( bus, dev, fun ); |
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102 | } |
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103 | } |
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104 | } |
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105 | } |
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