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drm/nouveau/bios: add pci data structure parsing

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Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2014-09-21 09:22:48 +10:00
parent ad4a362635
commit 8d85e06b5e
3 changed files with 86 additions and 0 deletions
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1
drivers/gpu/drm/nouveau/Makefile
View File

@ -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

18
drivers/gpu/drm/nouveau/core/include/subdev/bios/pcir.h Normal file
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@ -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

67
drivers/gpu/drm/nouveau/core/subdev/bios/pcir.c Normal file
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@ -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;
}