coreboot-kgpe-d16/payloads/coreinfo/pci_module.c

294 lines
6.0 KiB
C

/*
* This file is part of the coreinfo project.
*
* Copyright (C) 2008 Advanced Micro Devices, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <arch/io.h>
#include "coreinfo.h"
#ifdef CONFIG_MODULE_PCI
struct pci_devices {
unsigned short device;
unsigned int id;
};
static struct pci_devices devices[64];
static int devices_index;
#define REG_VENDOR_ID 0x00
#define REG_HEADER_TYPE 0x0e
#define REG_PRIMARY_BUS 0x18
#define HEADER_TYPE_NORMAL 0
#define HEADER_TYPE_BRIDGE 1
#define HEADER_TYPE_CARDBUS 2
#define PCI_ADDR(_bus, _dev, _reg) \
(0x80000000 | (_bus << 16) | (_dev << 8) | (_reg & ~3))
/* Number of entries to show in the list */
#define MENU_VISIBLE 16
static int menu_selected = 0;
static int menu_first = 0;
static void swap(struct pci_devices *a, struct pci_devices *b)
{
struct pci_devices tmp;
tmp.device = a->device;
tmp.id = a->id;
a->device = b->device;
a->id = b->id;
b->device = tmp.device;
b->id = tmp.id;
}
static int partition(struct pci_devices *list, int len)
{
int val = list[len / 2].device;
int index = 0;
int i;
swap(&list[len / 2], &list[len - 1]);
for (i = 0; i < len - 1; i++) {
if (list[i].device < val) {
swap(&list[i], &list[index]);
index++;
}
}
swap(&list[index], &list[len - 1]);
return index;
}
static void quicksort(struct pci_devices *list, int len)
{
int index;
if (len <= 1)
return;
index = partition(list, len);
quicksort(list, index);
quicksort(&(list[index]), len - index);
}
static void pci_read_dword(unsigned int bus, unsigned int devfn,
unsigned int reg, unsigned int *val)
{
outl(PCI_ADDR(bus, devfn, reg), 0xcf8);
*val = inl(0xcfc);
}
static void pci_read_byte(unsigned int bus, unsigned int devfn,
unsigned int reg, unsigned char *val)
{
outl(PCI_ADDR(bus, devfn, reg), 0xcf8);
*val = inb(0xcfc + (reg & 3));
}
static void show_config_space(WINDOW *win, int row, int col, int index)
{
unsigned char cspace[64];
int bus, devfn;
int i, x, y;
bus = (devices[index].device >> 8) & 0xff;
devfn = devices[index].device & 0xff;
for (i = 0; i < 64; i += 4)
pci_read_dword(bus, devfn, i, ((unsigned int *)&cspace[i]));
for (y = 0; y < 4; y++) {
for (x = 0; x < 16; x++)
mvwprintw(win, row + y, col + (x * 3), "%2.2X ",
cspace[(y * 16) + x]);
}
}
static int pci_module_redraw(WINDOW *win)
{
unsigned int bus, devfn, func;
int i, last;
print_module_title(win, "PCI Device List");
last = menu_first + MENU_VISIBLE;
if (last > devices_index)
last = devices_index;
for (i = 0; i < MENU_VISIBLE; i++) {
int item = menu_first + i;
/* Draw a blank space. */
if (item >= devices_index) {
wattrset(win, COLOR_PAIR(2));
mvwprintw(win, 2 + i, 1, " ");
continue;
}
bus = (devices[item].device >> 8) & 0xff;
devfn = (devices[item].device & 0xff) / 8;
func = (devices[item].device & 0xff) % 8;
if (item == menu_selected)
wattrset(win, COLOR_PAIR(3) | A_BOLD);
else
wattrset(win, COLOR_PAIR(2));
mvwprintw(win, 2 + i, 1, "%X:%2.2X.%2.2X %04X:%04X ",
bus, devfn, func,
devices[item].id & 0xffff,
(devices[item].id >> 16) & 0xffff);
wattrset(win, COLOR_PAIR(2));
if (i == 0) {
if (item != 0)
mvwprintw(win, 2 + i, 19, "\30");
}
if (i == MENU_VISIBLE - 1) {
if ((item + 1) < devices_index)
mvwprintw(win, 2 + i, 19, "\31");
}
}
wattrset(win, COLOR_PAIR(2));
for (i = 0; i < 16; i++)
mvwprintw(win, 2, 26 + (i * 3), "%2.2X ", i);
wmove(win, 3, 25);
for (i = 0; i < 48; i++)
waddch(win, (i == 0) ? '\332' : '\304');
for (i = 0; i < 4; i++) {
mvwprintw(win, 4 + i, 23, "%2.2X", i * 16);
wmove(win, 4 + i, 25);
waddch(win, '\263');
}
show_config_space(win, 4, 26, menu_selected);
return 0;
}
static void pci_scan_bus(int bus)
{
int devfn, func;
unsigned int val;
unsigned char hdr;
for (devfn = 0; devfn < 0x100;) {
for (func = 0; func < 8; func++, devfn++) {
pci_read_dword(bus, devfn, REG_VENDOR_ID, &val);
/* Nobody home. */
if (val == 0xffffffff || val == 0x00000000 ||
val == 0x0000ffff || val == 0xffff0000)
continue;
/* FIXME: Remove this arbitrary limitation. */
if (devices_index >= 64)
return;
devices[devices_index].device =
((bus & 0xff) << 8) | (devfn & 0xff);
devices[devices_index++].id = val;
/* If this is a bridge, then follow it. */
pci_read_byte(bus, devfn, REG_HEADER_TYPE, &hdr);
hdr &= 0x7f;
if (hdr == HEADER_TYPE_BRIDGE ||
hdr == HEADER_TYPE_CARDBUS) {
unsigned int busses;
pci_read_dword(bus, devfn, REG_PRIMARY_BUS,
&busses);
pci_scan_bus((busses >> 8) & 0xff);
}
}
}
quicksort(devices, devices_index);
}
static int pci_module_handle(int key)
{
int ret = 0;
switch (key) {
case KEY_DOWN:
if (menu_selected + 1 < devices_index) {
menu_selected++;
ret = 1;
}
break;
case KEY_UP:
if (menu_selected > 0) {
menu_selected--;
ret = 1;
}
break;
}
if (!ret)
return ret;
if (menu_selected < menu_first)
menu_first = menu_selected;
else if (menu_selected >= menu_first + MENU_VISIBLE) {
menu_first = menu_selected - (MENU_VISIBLE - 1);
if (menu_first < 0)
menu_first = 0;
}
return ret;
}
static int pci_module_init(void)
{
pci_scan_bus(0);
return 0;
}
struct coreinfo_module pci_module = {
.name = "PCI",
.init = pci_module_init,
.redraw = pci_module_redraw,
.handle = pci_module_handle,
};
#else
struct coreinfo_module pci_module = {
};
#endif