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