payloads/coreinfo/pci_module.c

   1 /*
   2  * This file is part of the coreinfo project.
   3  *
   4  * Copyright (C) 2008 Advanced Micro Devices, Inc.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  */
  15
  16 #include <arch/io.h>
  17 #include <pci.h>
  18 #include <libpayload.h>
  19 #include "coreinfo.h"
  20
  21 #if CONFIG(MODULE_PCI)
  22
  23 struct pci_devices {
  24         pcidev_t device;
  25         unsigned int id;
  26 };
  27
  28 #define MAX_PCI_DEVICES 64
  29 static struct pci_devices devices[MAX_PCI_DEVICES];
  30 static int devices_index;
  31
  32 /* Number of entries to show in the list */
  33 #define MENU_VISIBLE 16
  34
  35 static int menu_selected = 0;
  36 static int menu_first = 0;
  37
  38 static void swap(struct pci_devices *a, struct pci_devices *b)
  39 {
  40         struct pci_devices tmp;
  41
  42         tmp.device = a->device;
  43         tmp.id = a->id;
  44
  45         a->device = b->device;
  46         a->id = b->id;
  47
  48         b->device = tmp.device;
  49         b->id = tmp.id;
  50 }
  51
  52 static int partition(struct pci_devices *list, int len)
  53 {
  54         pcidev_t val = list[len / 2].device;
  55         int index = 0;
  56         int i;
  57
  58         swap(&list[len / 2], &list[len - 1]);
  59
  60         for (i = 0; i < len - 1; i++) {
  61                 if (list[i].device < val) {
  62                         swap(&list[i], &list[index]);
  63                         index++;
  64                 }
  65         }
  66
  67         swap(&list[index], &list[len - 1]);
  68
  69         return index;
  70 }
  71
  72 static void quicksort(struct pci_devices *list, int len)
  73 {
  74         int index;
  75
  76         if (len <= 1)
  77                 return;
  78
  79         index = partition(list, len);
  80
  81         quicksort(list, index);
  82         quicksort(&(list[index]), len - index);
  83 }
  84
  85 static void show_config_space(WINDOW *win, int row, int col, int index)
  86 {
  87         unsigned char cspace[256];
  88         pcidev_t dev;
  89         int i, x, y;
  90
  91         dev = devices[index].device;
  92
  93         for (i = 0; i < 256; i ++)
  94                 cspace[i] = pci_read_config8(dev, i);
  95
  96         for (y = 0; y < 16; y++) {
  97                 for (x = 0; x < 16; x++)
  98                         mvwprintw(win, row + y, col + (x * 3), "%2.2X ",
  99                                   cspace[(y * 16) + x]);
 100         }
 101 }
 102
 103 static int pci_module_redraw(WINDOW *win)
 104 {
 105         unsigned int bus, slot, func;
 106         int i;
 107
 108         print_module_title(win, "PCI Device List");
 109
 110         for (i = 0; i < MENU_VISIBLE; i++) {
 111                 int item = menu_first + i;
 112
 113                 /* Draw a blank space. */
 114                 if (item >= devices_index) {
 115                         wattrset(win, COLOR_PAIR(2));
 116                         mvwprintw(win, 2 + i, 1, "                 ");
 117                         continue;
 118                 }
 119
 120                 bus = PCI_BUS(devices[item].device);
 121                 slot = PCI_SLOT(devices[item].device);
 122                 func = PCI_FUNC(devices[item].device);
 123
 124                 if (item == menu_selected)
 125                         wattrset(win, COLOR_PAIR(3) | A_BOLD);
 126                 else
 127                         wattrset(win, COLOR_PAIR(2));
 128
 129                 mvwprintw(win, 2 + i, 1, "%X:%2.2X.%2.2X %04X:%04X  ",
 130                           bus, slot, func,
 131                           devices[item].id & 0xffff,
 132                           (devices[item].id >> 16) & 0xffff);
 133
 134                 wattrset(win, COLOR_PAIR(2));
 135
 136                 if (i == 0) {
 137                         if (item != 0)
 138                                 mvwaddch(win, 2 + i, 19, ACS_UARROW);
 139                 }
 140                 if (i == MENU_VISIBLE - 1) {
 141                         if ((item + 1) < devices_index)
 142                                 mvwaddch(win, 2 + i, 19, ACS_DARROW);
 143                 }
 144         }
 145
 146         wattrset(win, COLOR_PAIR(2));
 147
 148         for (i = 0; i < 16; i++)
 149                 mvwprintw(win, 2, 26 + (i * 3), "%2.2X ", i);
 150
 151         wmove(win, 3, 25);
 152
 153         for (i = 0; i < 48; i++)
 154                 waddch(win, (i == 0) ? ACS_ULCORNER : ACS_HLINE);
 155
 156         for (i = 0; i < 16; i++) {
 157                 mvwprintw(win, 4 + i, 23, "%2.2X", i * 16);
 158                 wmove(win, 4 + i, 25);
 159                 waddch(win, ACS_VLINE);
 160         }
 161
 162         show_config_space(win, 4, 26, menu_selected);
 163
 164         return 0;
 165 }
 166
 167 static void pci_scan_bus(int bus)
 168 {
 169         int slot, func;
 170         unsigned int val;
 171         unsigned char hdr;
 172
 173         for (slot = 0; slot < 0x20; slot++) {
 174                 for (func = 0; func < 8; func++) {
 175                         pcidev_t dev = PCI_DEV(bus, slot, func);
 176
 177                         val = pci_read_config32(dev, REG_VENDOR_ID);
 178
 179                         /* Nobody home. */
 180                         if (val == 0xffffffff || val == 0x00000000 ||
 181                             val == 0x0000ffff || val == 0xffff0000) {
 182
 183                                 /* If function 0 is not present, no need
 184                                  * to test other functions. */
 185                                 if (func == 0)
 186                                         func = 8;
 187                                 continue;
 188                         }
 189
 190                         /* FIXME: Remove this arbitrary limitation. */
 191                         if (devices_index >= MAX_PCI_DEVICES)
 192                                 return;
 193
 194                         devices[devices_index].device =
 195                             PCI_DEV(bus, slot, func);
 196
 197                         devices[devices_index++].id = val;
 198
 199                         /* If this is a bridge, then follow it. */
 200                         hdr = pci_read_config8(dev, REG_HEADER_TYPE);
 201
 202                         if ((func == 0) && !(hdr & HEADER_TYPE_MULTIFUNCTION))
 203                                 func = 8;
 204
 205                         hdr &= ~HEADER_TYPE_MULTIFUNCTION;
 206                         if (hdr == HEADER_TYPE_BRIDGE ||
 207                             hdr == HEADER_TYPE_CARDBUS) {
 208                                 unsigned int busses;
 209
 210                                 busses = pci_read_config32(dev, REG_PRIMARY_BUS);
 211
 212                                 pci_scan_bus((busses >> 8) & 0xff);
 213
 214                         }
 215                 }
 216         }
 217
 218         quicksort(devices, devices_index);
 219 }
 220
 221 static int pci_module_handle(int key)
 222 {
 223         int ret = 0;
 224
 225         switch (key) {
 226         case KEY_DOWN:
 227                 if (menu_selected + 1 < devices_index) {
 228                         menu_selected++;
 229                         ret = 1;
 230                 }
 231                 break;
 232         case KEY_UP:
 233                 if (menu_selected > 0) {
 234                         menu_selected--;
 235                         ret = 1;
 236                 }
 237                 break;
 238         }
 239
 240         if (!ret)
 241                 return ret;
 242
 243         if (menu_selected < menu_first)
 244                 menu_first = menu_selected;
 245         else if (menu_selected >= menu_first + MENU_VISIBLE) {
 246                 menu_first = menu_selected - (MENU_VISIBLE - 1);
 247                 if (menu_first < 0)
 248                         menu_first = 0;
 249         }
 250
 251         return ret;
 252 }
 253
 254 static int pci_module_init(void)
 255 {
 256         pci_scan_bus(0);
 257         return 0;
 258 }
 259
 260 struct coreinfo_module pci_module = {
 261         .name = "PCI",
 262         .init = pci_module_init,
 263         .redraw = pci_module_redraw,
 264         .handle = pci_module_handle,
 265 };
 266
 267 #else
 268
 269 struct coreinfo_module pci_module = {
 270 };
 271
 272 #endif