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/*
* Copyright 2007 Jérôme Glisse
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
/*
* Authors:
* Jerome Glisse <glisse@freedesktop.org>
*/
#include "radeon_ms.h"
int radeon_ms_rom_get_properties(struct drm_device *dev)
{
struct drm_radeon_private *dev_priv = dev->dev_private;
switch (dev_priv->rom.type) {
case ROM_COMBIOS:
return radeon_ms_combios_get_properties(dev);
}
return 0;
}
int radeon_ms_rom_init(struct drm_device *dev)
{
struct drm_radeon_private *dev_priv = dev->dev_private;
struct radeon_ms_rom *rom = &dev_priv->rom;
void *rom_mapped;
char atomstr[5] = {0, 0, 0, 0, 0};
uint16_t *offset;
dev_priv->rom.type = ROM_UNKNOWN;
/* copy rom if any */
rom_mapped = pci_map_rom(dev->pdev, &rom->rom_size);
if (rom_mapped && rom->rom_size) {
rom->rom_image = drm_alloc(rom->rom_size, DRM_MEM_DRIVER);
if (rom->rom_image == NULL) {
return -1;
}
memcpy(rom->rom_image, rom_mapped, rom->rom_size);
DRM_INFO("[radeon_ms] ROM %d bytes copied\n", rom->rom_size);
} else {
DRM_INFO("[radeon_ms] no ROM\n");
return 0;
}
pci_unmap_rom(dev->pdev, rom_mapped);
if (rom->rom_image[0] != 0x55 || rom->rom_image[1] != 0xaa) {
DRM_INFO("[radeon_ms] no ROM\n");
DRM_INFO("[radeon_ms] ROM signature 0x55 0xaa missing\n");
return 0;
}
offset = (uint16_t *)&rom->rom_image[ROM_HEADER];
memcpy(atomstr, &rom->rom_image[*offset + 4], 4);
if (!strcpy(atomstr, "ATOM") || !strcpy(atomstr, "MOTA")) {
DRM_INFO("[radeon_ms] ATOMBIOS ROM detected\n");
return 0;
} else {
struct combios_header **header;
header = &rom->rom.combios_header;
if ((*offset + sizeof(struct combios_header)) > rom->rom_size) {
DRM_INFO("[radeon_ms] wrong COMBIOS header offset\n");
return -1;
}
dev_priv->rom.type = ROM_COMBIOS;
*header = (struct combios_header *)&rom->rom_image[*offset];
DRM_INFO("[radeon_ms] COMBIOS type : %d\n",
(*header)->ucTypeDefinition);
DRM_INFO("[radeon_ms] COMBIOS OEM ID: %02x %02x\n",
(*header)->ucOemID1, (*header)->ucOemID2);
}
return 0;
}
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