drm/nouveau/bios: add parsing of pmu image tables

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

diff --git a/drivers/gpu/drm/nouveau/Makefile b/drivers/gpu/drm/nouveau/Makefile
index 2c428b7..bb32d0e 100644 (file)
--- a/drivers/gpu/drm/nouveau/Makefile
+++ b/drivers/gpu/drm/nouveau/Makefile
@@ -48,6 +48,7 @@ nouveau-y += core/subdev/bios/npde.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/pmu.o
 nouveau-y += core/subdev/bios/ramcfg.o
 nouveau-y += core/subdev/bios/rammap.o
 nouveau-y += core/subdev/bios/shadow.o

diff --git a/drivers/gpu/drm/nouveau/core/include/subdev/bios/pmu.h b/drivers/gpu/drm/nouveau/core/include/subdev/bios/pmu.h
new file mode 100644 (file)
index 0000000..9de593d
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/include/subdev/bios/pmu.h
@@ -0,0 +1,37 @@
+#ifndef __NVBIOS_PMU_H__
+#define __NVBIOS_PMU_H__
+
+struct nvbios_pmuT {
+};
+
+u32 nvbios_pmuTe(struct nouveau_bios *, u8 *ver, u8 *hdr, u8 *cnt, u8 *len);
+u32 nvbios_pmuTp(struct nouveau_bios *, u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
+                struct nvbios_pmuT *);
+
+struct nvbios_pmuE {
+       u8  type;
+       u32 data;
+};
+
+u32 nvbios_pmuEe(struct nouveau_bios *, int idx, u8 *ver, u8 *hdr);
+u32 nvbios_pmuEp(struct nouveau_bios *, int idx, u8 *ver, u8 *hdr,
+                struct nvbios_pmuE *);
+
+struct nvbios_pmuR {
+       u32 boot_addr_pmu;
+       u32 boot_addr;
+       u32 boot_size;
+       u32 code_addr_pmu;
+       u32 code_addr;
+       u32 code_size;
+       u32 init_addr_pmu;
+
+       u32 data_addr_pmu;
+       u32 data_addr;
+       u32 data_size;
+       u32 args_addr_pmu;
+};
+
+bool nvbios_pmuRm(struct nouveau_bios *, u8 type, struct nvbios_pmuR *);
+
+#endif

diff --git a/drivers/gpu/drm/nouveau/core/subdev/bios/pmu.c b/drivers/gpu/drm/nouveau/core/subdev/bios/pmu.c
new file mode 100644 (file)
index 0000000..66c56ba
--- /dev/null
+++ b/drivers/gpu/drm/nouveau/core/subdev/bios/pmu.c
@@ -0,0 +1,135 @@
+/*
+ * 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/bit.h>
+#include <subdev/bios/image.h>
+#include <subdev/bios/pmu.h>
+
+static u32
+weirdo_pointer(struct nouveau_bios *bios, u32 data)
+{
+       struct nvbios_image image;
+       int idx = 0;
+       if (nvbios_image(bios, idx++, &image)) {
+               data -= image.size;
+               while (nvbios_image(bios, idx++, &image)) {
+                       if (image.type == 0xe0)
+                               return image.base + data;
+               }
+       }
+       return 0;
+}
+
+u32
+nvbios_pmuTe(struct nouveau_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len)
+{
+       struct bit_entry bit_p;
+       u32 data = 0;
+
+       if (!bit_entry(bios, 'p', &bit_p)) {
+               if (bit_p.version == 2 && bit_p.length >= 4)
+                       data = nv_ro32(bios, bit_p.offset + 0x00);
+               if ((data = weirdo_pointer(bios, data))) {
+                       *ver = nv_ro08(bios, data + 0x00); /* maybe? */
+                       *hdr = nv_ro08(bios, data + 0x01);
+                       *len = nv_ro08(bios, data + 0x02);
+                       *cnt = nv_ro08(bios, data + 0x03);
+               }
+       }
+
+       return data;
+}
+
+u32
+nvbios_pmuTp(struct nouveau_bios *bios, u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
+            struct nvbios_pmuT *info)
+{
+       u32 data = nvbios_pmuTe(bios, ver, hdr, cnt, len);
+       memset(info, 0x00, sizeof(*info));
+       switch (!!data * *ver) {
+       default:
+               break;
+       }
+       return data;
+}
+
+u32
+nvbios_pmuEe(struct nouveau_bios *bios, int idx, u8 *ver, u8 *hdr)
+{
+       u8  cnt, len;
+       u32 data = nvbios_pmuTe(bios, ver, hdr, &cnt, &len);
+       if (data && idx < cnt) {
+               data = data + *hdr + (idx * len);
+               *hdr = len;
+               return data;
+       }
+       return 0;
+}
+
+u32
+nvbios_pmuEp(struct nouveau_bios *bios, int idx, u8 *ver, u8 *hdr,
+            struct nvbios_pmuE *info)
+{
+       u32 data = nvbios_pmuEe(bios, idx, ver, hdr);
+       memset(info, 0x00, sizeof(*info));
+       switch (!!data * *ver) {
+       default:
+               info->type = nv_ro08(bios, data + 0x00);
+               info->data = nv_ro32(bios, data + 0x02);
+               break;
+       }
+       return data;
+}
+
+bool
+nvbios_pmuRm(struct nouveau_bios *bios, u8 type, struct nvbios_pmuR *info)
+{
+       struct nvbios_pmuE pmuE;
+       u8  ver, hdr, idx = 0;
+       u32 data;
+       memset(info, 0x00, sizeof(*info));
+       while ((data = nvbios_pmuEp(bios, idx++, &ver, &hdr, &pmuE))) {
+               if ( pmuE.type == type &&
+                   (data = weirdo_pointer(bios, pmuE.data))) {
+                       info->init_addr_pmu = nv_ro32(bios, data + 0x08);
+                       info->args_addr_pmu = nv_ro32(bios, data + 0x0c);
+                       info->boot_addr     = data + 0x30;
+                       info->boot_addr_pmu = nv_ro32(bios, data + 0x10) +
+                                             nv_ro32(bios, data + 0x18);
+                       info->boot_size     = nv_ro32(bios, data + 0x1c) -
+                                             nv_ro32(bios, data + 0x18);
+                       info->code_addr     = info->boot_addr + info->boot_size;
+                       info->code_addr_pmu = info->boot_addr_pmu +
+                                             info->boot_size;
+                       info->code_size     = nv_ro32(bios, data + 0x20);
+                       info->data_addr     = data + 0x30 +
+                                             nv_ro32(bios, data + 0x24);
+                       info->data_addr_pmu = nv_ro32(bios, data + 0x28);
+                       info->data_size     = nv_ro32(bios, data + 0x2c);
+                       return true;
+               }
+       }
+       return false;
+}