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/*
* Copyright © 2009 Jerome Glisse <glisse@freedesktop.org>
*
* This file is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License
* as published by the Free Software Foundation.
*
* 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 "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include "xf86drm.h"
#include "radeon_priv.h"
int radeon_probe(struct radeon *radeon)
{
struct pci_slot_match match;
struct pci_device_iterator *iter;
struct pci_device *device;
int i = 0;
int r = 0;
radeon->bios = (uint8_t*)malloc(256*1024);
if (radeon->bios == NULL) {
fprintf(stderr, "Failed to allocate bios copy\n");
return -1;
}
if (pci_system_init()) {
fprintf(stderr, "Failed to initialize libpciaccess\n");
return -1;
}
match.domain = PCI_MATCH_ANY;
match.bus = PCI_MATCH_ANY;
match.dev = PCI_MATCH_ANY;
match.func = 0;
match.match_data = 0;
iter = pci_slot_match_iterator_create(&match);
while ((device = pci_device_next(iter))) {
pci_device_probe(device);
/* ATI vendor id 0x1002 and we are looking for a video
* card class 0x03 with subclass 0x00 (VGA)
*/
if (device->vendor_id == 0x1002) {
radeon->family = radeon_family_from_device(device->device_id);
radeon->device = device->device_id;
if (radeon->family != CHIP_UNKNOWN) {
for (i = 0; i < 6; i++) {
if (device->regions[i].size == 64 * 1024) {
radeon->mmio_base = device->regions[i].base_addr;
radeon->mmio_size = device->regions[i].size;
}
}
radeon->dev = device;
break;
}
}
}
pci_iterator_destroy(iter);
if (!radeon->dev) {
fprintf(stderr, "Cannot find radeon device\n");
return -1;
}
if (pci_device_map_range(radeon->dev, radeon->mmio_base, radeon->mmio_size,
PCI_DEV_MAP_FLAG_WRITABLE,
(void**)&radeon->mmio)) {
fprintf(stderr, "Mapping mmio failed (are you root ?)\n");
return -1;
}
r = pci_device_read_rom(radeon->dev, radeon->bios);
if (r) {
fprintf(stderr, "Cannot read rom %d\n", r);
return -1;
}
return 0;
}
void radeon_close(struct radeon *radeon)
{
if (pci_device_unmap_range(radeon->dev, radeon->mmio, radeon->mmio_size)) {
fprintf(stderr, "Unmapping mmio failed\n");
}
}
u32 radeon_mmio_rd32(struct radeon *radeon, u32 offset)
{
u32 value;
if (radeon->mmio == NULL) {
fprintf(stderr, "(%s:%d) internal error\n", __func__, __LINE__);
exit(1);
}
value = *(u32 * volatile)(radeon->mmio + offset);
return value;
}
void radeon_mmio_wr32(struct radeon *radeon, u32 offset, u32 value)
{
if (radeon->mmio == NULL) {
fprintf(stderr, "(%s:%d) internal error\n", __func__, __LINE__);
exit(1);
}
*(u32 * volatile)(radeon->mmio + offset) = value;
}
void radeon_mmio_wr8(struct radeon *radeon, u32 offset, u8 value)
{
if (radeon->mmio == NULL) {
fprintf(stderr, "(%s:%d) internal error\n", __func__, __LINE__);
exit(1);
}
*(u8 * volatile)(radeon->mmio + offset) = value;
}
struct radeon *radeon_new_from_pci(void)
{
struct radeon *radeon;
int r;
radeon = calloc(1, sizeof(*radeon));
if (radeon == NULL)
return NULL;
radeon->refcount = 1;
if (radeon_probe(radeon)) {
return radeon_decref(radeon);
}
return radeon;
}
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