From: Ben Skeggs <bskeggs@redhat.com>
Date: Sat, 20 Sep 2014 23:22:48 +0000 (+1000)
Subject: drm/nouveau/bios: add pci data structure parsing
X-Git-Tag: firefly_0821_release~176^2~2543^2~2^2~77
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=8d85e06b5e049efb97a88aa1b9822420108d24d7;p=firefly-linux-kernel-4.4.55.git
drm/nouveau/bios: add pci data structure parsing
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
---
diff --git a/drivers/gpu/drm/nouveau/Makefile b/drivers/gpu/drm/nouveau/Makefile
index f815ac03664b..7f274c7926a1 100644
--- a/drivers/gpu/drm/nouveau/Makefile
+++ b/drivers/gpu/drm/nouveau/Makefile
@@ -44,6 +44,7 @@ nouveau-y += core/subdev/bios/i2c.o
nouveau-y += core/subdev/bios/image.o
nouveau-y += core/subdev/bios/init.o
nouveau-y += core/subdev/bios/mxm.o
+nouveau-y += core/subdev/bios/pcir.o
nouveau-y += core/subdev/bios/perf.o
nouveau-y += core/subdev/bios/pll.o
nouveau-y += core/subdev/bios/ramcfg.o
diff --git a/drivers/gpu/drm/nouveau/core/include/subdev/bios/pcir.h b/drivers/gpu/drm/nouveau/core/include/subdev/bios/pcir.h
new file mode 100644
index 000000000000..3d634a06dca1
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/include/subdev/bios/pcir.h
@@ -0,0 +1,18 @@
+#ifndef __NVBIOS_PCIR_H__
+#define __NVBIOS_PCIR_H__
+
+struct nvbios_pcirT {
+ u16 vendor_id;
+ u16 device_id;
+ u8 class_code[3];
+ u32 image_size;
+ u16 image_rev;
+ u8 image_type;
+ bool last;
+};
+
+u32 nvbios_pcirTe(struct nouveau_bios *, u32, u8 *ver, u16 *hdr);
+u32 nvbios_pcirTp(struct nouveau_bios *, u32, u8 *ver, u16 *hdr,
+ struct nvbios_pcirT *);
+
+#endif
diff --git a/drivers/gpu/drm/nouveau/core/subdev/bios/pcir.c b/drivers/gpu/drm/nouveau/core/subdev/bios/pcir.c
new file mode 100644
index 000000000000..a58ed44e1643
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/subdev/bios/pcir.c
@@ -0,0 +1,67 @@
+/*
+ * 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 nouveau_bios *bios, u32 base, u8 *ver, u16 *hdr)
+{
+ u32 data = nv_ro16(bios, base + 0x18);
+ if (data) {
+ data += base;
+ switch (nv_ro32(bios, data + 0x00)) {
+ case 0x52494350: /* PCIR */
+ *hdr = nv_ro16(bios, data + 0x0a);
+ *ver = nv_ro08(bios, data + 0x0c);
+ break;
+ default:
+ nv_debug(bios, "%08x: PCIR signature (%08x) unknown\n",
+ data, nv_ro32(bios, data + 0x00));
+ data = 0;
+ break;
+ }
+ }
+ return data;
+}
+
+u32
+nvbios_pcirTp(struct nouveau_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 = nv_ro16(bios, data + 0x04);
+ info->device_id = nv_ro16(bios, data + 0x06);
+ info->class_code[0] = nv_ro08(bios, data + 0x0d);
+ info->class_code[1] = nv_ro08(bios, data + 0x0e);
+ info->class_code[2] = nv_ro08(bios, data + 0x0f);
+ info->image_size = nv_ro16(bios, data + 0x10) * 512;
+ info->image_rev = nv_ro16(bios, data + 0x12);
+ info->image_type = nv_ro08(bios, data + 0x14);
+ info->last = nv_ro08(bios, data + 0x15) & 0x80;
+ }
+ return data;
+}