From b71a1344ec200bfe9f5d25c4046e2794f7b2699f Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Sun, 21 Sep 2014 09:35:16 +1000 Subject: [PATCH] drm/nouveau/bios: add NPDE parsing Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/Makefile | 1 + .../nouveau/core/include/subdev/bios/npde.h | 12 ++++ .../gpu/drm/nouveau/core/subdev/bios/npde.c | 59 +++++++++++++++++++ 3 files changed, 72 insertions(+) create mode 100644 drivers/gpu/drm/nouveau/core/include/subdev/bios/npde.h create mode 100644 drivers/gpu/drm/nouveau/core/subdev/bios/npde.c diff --git a/drivers/gpu/drm/nouveau/Makefile b/drivers/gpu/drm/nouveau/Makefile index 7f274c7926a1..2c428b7ae9a5 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/npde.o nouveau-y += core/subdev/bios/pcir.o nouveau-y += core/subdev/bios/perf.o nouveau-y += core/subdev/bios/pll.o diff --git a/drivers/gpu/drm/nouveau/core/include/subdev/bios/npde.h b/drivers/gpu/drm/nouveau/core/include/subdev/bios/npde.h new file mode 100644 index 000000000000..b18413d951e5 --- /dev/null +++ b/drivers/gpu/drm/nouveau/core/include/subdev/bios/npde.h @@ -0,0 +1,12 @@ +#ifndef __NVBIOS_NPDE_H__ +#define __NVBIOS_NPDE_H__ + +struct nvbios_npdeT { + u32 image_size; + bool last; +}; + +u32 nvbios_npdeTe(struct nouveau_bios *, u32); +u32 nvbios_npdeTp(struct nouveau_bios *, u32, struct nvbios_npdeT *); + +#endif diff --git a/drivers/gpu/drm/nouveau/core/subdev/bios/npde.c b/drivers/gpu/drm/nouveau/core/subdev/bios/npde.c new file mode 100644 index 000000000000..d694716a166c --- /dev/null +++ b/drivers/gpu/drm/nouveau/core/subdev/bios/npde.c @@ -0,0 +1,59 @@ +/* + * 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 + */ + +#include +#include +#include + +u32 +nvbios_npdeTe(struct nouveau_bios *bios, u32 base) +{ + struct nvbios_pcirT pcir; + u8 ver; u16 hdr; + u32 data = nvbios_pcirTp(bios, base, &ver, &hdr, &pcir); + if (data = (data + hdr + 0x0f) & ~0x0f, data) { + switch (nv_ro32(bios, data + 0x00)) { + case 0x4544504e: /* NPDE */ + break; + default: + nv_debug(bios, "%08x: NPDE signature (%08x) unknown\n", + data, nv_ro32(bios, data + 0x00)); + data = 0; + break; + } + } + return data; +} + +u32 +nvbios_npdeTp(struct nouveau_bios *bios, u32 base, struct nvbios_npdeT *info) +{ + u32 data = nvbios_npdeTe(bios, base); + memset(info, 0x00, sizeof(*info)); + if (data) { + info->image_size = nv_ro16(bios, data + 0x08) * 512; + info->last = nv_ro08(bios, data + 0x0a) & 0x80; + } + return data; +} -- 2.30.2