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path: root/drivers/gpu/drm/nouveau/nvkm/subdev/bios/pcir.c
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Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/bios/pcir.c')
-rw-r--r--drivers/gpu/drm/nouveau/nvkm/subdev/bios/pcir.c69
1 files changed, 69 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/bios/pcir.c b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/pcir.c
new file mode 100644
index 000000000..67cb3aeb2
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/nvkm/subdev/bios/pcir.c
@@ -0,0 +1,69 @@
+/*
+ * Copyright 2014 Red Hat Inc.
+ *
+ * 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 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
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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: Ben Skeggs <bskeggs@redhat.com>
+ */
+#include <subdev/bios.h>
+#include <subdev/bios/pcir.h>
+
+u32
+nvbios_pcirTe(struct nvkm_bios *bios, u32 base, u8 *ver, u16 *hdr)
+{
+ u32 data = nvbios_rd16(bios, base + 0x18);
+ if (data) {
+ data += base;
+ switch (nvbios_rd32(bios, data + 0x00)) {
+ case 0x52494350: /* PCIR */
+ case 0x53494752: /* RGIS */
+ case 0x5344504e: /* NPDS */
+ *hdr = nvbios_rd16(bios, data + 0x0a);
+ *ver = nvbios_rd08(bios, data + 0x0c);
+ break;
+ default:
+ nvkm_debug(&bios->subdev,
+ "%08x: PCIR signature (%08x) unknown\n",
+ data, nvbios_rd32(bios, data + 0x00));
+ data = 0;
+ break;
+ }
+ }
+ return data;
+}
+
+u32
+nvbios_pcirTp(struct nvkm_bios *bios, u32 base, u8 *ver, u16 *hdr,
+ struct nvbios_pcirT *info)
+{
+ u32 data = nvbios_pcirTe(bios, base, ver, hdr);
+ memset(info, 0x00, sizeof(*info));
+ if (data) {
+ info->vendor_id = nvbios_rd16(bios, data + 0x04);
+ info->device_id = nvbios_rd16(bios, data + 0x06);
+ info->class_code[0] = nvbios_rd08(bios, data + 0x0d);
+ info->class_code[1] = nvbios_rd08(bios, data + 0x0e);
+ info->class_code[2] = nvbios_rd08(bios, data + 0x0f);
+ info->image_size = nvbios_rd16(bios, data + 0x10) * 512;
+ info->image_rev = nvbios_rd16(bios, data + 0x12);
+ info->image_type = nvbios_rd08(bios, data + 0x14);
+ info->last = nvbios_rd08(bios, data + 0x15) & 0x80;
+ }
+ return data;
+}