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Diffstat (limited to 'shared-core/radeon_ms_rom.c')
-rw-r--r--shared-core/radeon_ms_rom.c91
1 files changed, 91 insertions, 0 deletions
diff --git a/shared-core/radeon_ms_rom.c b/shared-core/radeon_ms_rom.c
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+++ b/shared-core/radeon_ms_rom.c
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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;
+}