drm/nouveau/bios: parsing of some random table needed to bring up gr

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

diff --git a/drivers/gpu/drm/nouveau/Makefile b/drivers/gpu/drm/nouveau/Makefile
index 4c5a61e4277f31d482b31a775ac7af18a20ea4a7..4625f70fd32050f47274a0d9a949067d73f9413c 100644 (file)
--- a/drivers/gpu/drm/nouveau/Makefile
+++ b/drivers/gpu/drm/nouveau/Makefile
@@ -48,6 +48,7 @@ nouveau-y += core/subdev/bios/therm.o
 nouveau-y += core/subdev/bios/vmap.o
 nouveau-y += core/subdev/bios/volt.o
 nouveau-y += core/subdev/bios/xpio.o
+nouveau-y += core/subdev/bios/P0260.o
 nouveau-y += core/subdev/bus/hwsq.o
 nouveau-y += core/subdev/bus/nv04.o
 nouveau-y += core/subdev/bus/nv31.o

diff --git a/drivers/gpu/drm/nouveau/core/include/subdev/bios/P0260.h b/drivers/gpu/drm/nouveau/core/include/subdev/bios/P0260.h
new file mode 100644 (file)
index 0000000..bba01ab
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/include/subdev/bios/P0260.h
@@ -0,0 +1,23 @@
+#ifndef __NVBIOS_P0260_H__
+#define __NVBIOS_P0260_H__
+
+u32 nvbios_P0260Te(struct nouveau_bios *,
+                  u8 *ver, u8 *hdr, u8 *cnt, u8 *len, u8 *xnr, u8 *xsz);
+
+struct nvbios_P0260E {
+       u32 data;
+};
+
+u32 nvbios_P0260Ee(struct nouveau_bios *, int idx, u8 *ver, u8 *hdr);
+u32 nvbios_P0260Ep(struct nouveau_bios *, int idx, u8 *ver, u8 *hdr,
+                  struct nvbios_P0260E *);
+
+struct nvbios_P0260X {
+       u32 data;
+};
+
+u32 nvbios_P0260Xe(struct nouveau_bios *, int idx, u8 *ver, u8 *hdr);
+u32 nvbios_P0260Xp(struct nouveau_bios *, int idx, u8 *ver, u8 *hdr,
+                  struct nvbios_P0260X *);
+
+#endif

diff --git a/drivers/gpu/drm/nouveau/core/subdev/bios/P0260.c b/drivers/gpu/drm/nouveau/core/subdev/bios/P0260.c
new file mode 100644 (file)
index 0000000..199f4e5
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/subdev/bios/P0260.c
@@ -0,0 +1,109 @@
+/*
+ * Copyright 2013 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
+ */
+
+#include <subdev/bios.h>
+#include <subdev/bios/bit.h>
+#include <subdev/bios/ramcfg.h>
+#include <subdev/bios/P0260.h>
+
+u32
+nvbios_P0260Te(struct nouveau_bios *bios,
+              u8 *ver, u8 *hdr, u8 *cnt, u8 *len, u8 *xnr, u8 *xsz)
+{
+       struct bit_entry bit_P;
+       u32 data = 0x00000000;
+
+       if (!bit_entry(bios, 'P', &bit_P)) {
+               if (bit_P.version == 2 && bit_P.length > 0x63)
+                       data = nv_ro32(bios, bit_P.offset + 0x60);
+               if (data) {
+                       *ver = nv_ro08(bios, data + 0);
+                       switch (*ver) {
+                       case 0x10:
+                               *hdr = nv_ro08(bios, data + 1);
+                               *cnt = nv_ro08(bios, data + 2);
+                               *len = 4;
+                               *xnr = nv_ro08(bios, data + 3);
+                               *xsz = 4;
+                               return data;
+                       default:
+                               break;
+                       }
+               }
+       }
+
+       return 0x00000000;
+}
+
+u32
+nvbios_P0260Ee(struct nouveau_bios *bios, int idx, u8 *ver, u8 *len)
+{
+       u8  hdr, cnt, xnr, xsz;
+       u32 data = nvbios_P0260Te(bios, ver, &hdr, &cnt, len, &xnr, &xsz);
+       if (data && idx < cnt)
+               return data + hdr + (idx * *len);
+       return 0x00000000;
+}
+
+u32
+nvbios_P0260Ep(struct nouveau_bios *bios, int idx, u8 *ver, u8 *len,
+              struct nvbios_P0260E *info)
+{
+       u32 data = nvbios_P0260Ee(bios, idx, ver, len);
+       memset(info, 0x00, sizeof(*info));
+       switch (!!data * *ver) {
+       case 0x10:
+               info->data = nv_ro32(bios, data);
+               return data;
+       default:
+               break;
+       }
+       return 0x00000000;
+}
+
+u32
+nvbios_P0260Xe(struct nouveau_bios *bios, int idx, u8 *ver, u8 *xsz)
+{
+       u8  hdr, cnt, len, xnr;
+       u32 data = nvbios_P0260Te(bios, ver, &hdr, &cnt, &len, &xnr, xsz);
+       if (data && idx < xnr)
+               return data + hdr + (cnt * len) + (idx * *xsz);
+       return 0x00000000;
+}
+
+u32
+nvbios_P0260Xp(struct nouveau_bios *bios, int idx, u8 *ver, u8 *hdr,
+              struct nvbios_P0260X *info)
+{
+       u32 data = nvbios_P0260Xe(bios, idx, ver, hdr);
+       memset(info, 0x00, sizeof(*info));
+       switch (!!data * *ver) {
+       case 0x10:
+               info->data = nv_ro32(bios, data);
+               return data;
+       default:
+               break;
+       }
+       return 0x00000000;
+}