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author | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 12:17:53 -0700 |
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committer | Yunhong Jiang <yunhong.jiang@intel.com> | 2015-08-04 15:44:42 -0700 |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bios/ramcfg.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bios/ramcfg.c')
-rw-r--r-- | kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bios/ramcfg.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bios/ramcfg.c b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bios/ramcfg.c new file mode 100644 index 000000000..a17b22111 --- /dev/null +++ b/kernel/drivers/gpu/drm/nouveau/nvkm/subdev/bios/ramcfg.c @@ -0,0 +1,78 @@ +/* + * 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 <bskeggs@redhat.com> + */ +#include <subdev/bios.h> +#include <subdev/bios/bit.h> +#include <subdev/bios/ramcfg.h> +#include <subdev/bios/M0203.h> + +static u8 +nvbios_ramcfg_strap(struct nvkm_subdev *subdev) +{ + return (nv_rd32(subdev, 0x101000) & 0x0000003c) >> 2; +} + +u8 +nvbios_ramcfg_count(struct nvkm_bios *bios) +{ + struct bit_entry bit_M; + + if (!bit_entry(bios, 'M', &bit_M)) { + if (bit_M.version == 1 && bit_M.length >= 5) + return nv_ro08(bios, bit_M.offset + 2); + if (bit_M.version == 2 && bit_M.length >= 3) + return nv_ro08(bios, bit_M.offset + 0); + } + + return 0x00; +} + +u8 +nvbios_ramcfg_index(struct nvkm_subdev *subdev) +{ + struct nvkm_bios *bios = nvkm_bios(subdev); + u8 strap = nvbios_ramcfg_strap(subdev); + u32 xlat = 0x00000000; + struct bit_entry bit_M; + struct nvbios_M0203E M0203E; + u8 ver, hdr; + + if (!bit_entry(bios, 'M', &bit_M)) { + if (bit_M.version == 1 && bit_M.length >= 5) + xlat = nv_ro16(bios, bit_M.offset + 3); + if (bit_M.version == 2 && bit_M.length >= 3) { + /*XXX: is M ever shorter than this? + * if not - what is xlat used for now? + * also - sigh.. + */ + if (bit_M.length >= 7 && + nvbios_M0203Em(bios, strap, &ver, &hdr, &M0203E)) + return M0203E.group; + xlat = nv_ro16(bios, bit_M.offset + 1); + } + } + + if (xlat) + strap = nv_ro08(bios, xlat + strap); + return strap; +} |