From 6b07c6cfd1530e39a6e5e81e63b59953b3f35eea Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Wed, 3 Sep 2014 12:40:04 +1000 Subject: [PATCH] drm/gk104/fb/ram: make use of training data provided by vbios Signed-off-by: Ben Skeggs --- .../gpu/drm/nouveau/core/subdev/fb/ramnve0.c | 181 +++++++++++++----- 1 file changed, 138 insertions(+), 43 deletions(-) diff --git a/drivers/gpu/drm/nouveau/core/subdev/fb/ramnve0.c b/drivers/gpu/drm/nouveau/core/subdev/fb/ramnve0.c index 3e6987521cc5..51aa29e8f7eb 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/fb/ramnve0.c +++ b/drivers/gpu/drm/nouveau/core/subdev/fb/ramnve0.c @@ -29,6 +29,8 @@ #include #include #include +#include +#include #include #include @@ -1130,24 +1132,147 @@ nve0_ram_tidy(struct nouveau_fb *pfb) ram_exec(fuc, false); } +struct nve0_ram_train { + u16 mask; + struct nvbios_M0209S remap; + struct nvbios_M0209S type00; + struct nvbios_M0209S type01; + struct nvbios_M0209S type04; + struct nvbios_M0209S type06; + struct nvbios_M0209S type07; + struct nvbios_M0209S type08; + struct nvbios_M0209S type09; +}; + +static int +nve0_ram_train_type(struct nouveau_fb *pfb, int i, u8 ramcfg, + struct nve0_ram_train *train) +{ + struct nouveau_bios *bios = nouveau_bios(pfb); + struct nvbios_M0205E M0205E; + struct nvbios_M0205S M0205S; + struct nvbios_M0209E M0209E; + struct nvbios_M0209S *remap = &train->remap; + struct nvbios_M0209S *value; + u8 ver, hdr, cnt, len; + u32 data; + + /* determine type of data for this index */ + if (!(data = nvbios_M0205Ep(bios, i, &ver, &hdr, &cnt, &len, &M0205E))) + return -ENOENT; + + switch (M0205E.type) { + case 0x00: value = &train->type00; break; + case 0x01: value = &train->type01; break; + case 0x04: value = &train->type04; break; + case 0x06: value = &train->type06; break; + case 0x07: value = &train->type07; break; + case 0x08: value = &train->type08; break; + case 0x09: value = &train->type09; break; + default: + return 0; + } + + /* training data index determined by ramcfg strap */ + if (!(data = nvbios_M0205Sp(bios, i, ramcfg, &ver, &hdr, &M0205S))) + return -EINVAL; + i = M0205S.data; + + /* training data format information */ + if (!(data = nvbios_M0209Ep(bios, i, &ver, &hdr, &cnt, &len, &M0209E))) + return -EINVAL; + + /* ... and the raw data */ + if (!(data = nvbios_M0209Sp(bios, i, 0, &ver, &hdr, value))) + return -EINVAL; + + if (M0209E.v02_07 == 2) { + /* of course! why wouldn't we have a pointer to another entry + * in the same table, and use the first one as an array of + * remap indices... + */ + if (!(data = nvbios_M0209Sp(bios, M0209E.v03, 0, &ver, &hdr, + remap))) + return -EINVAL; + + for (i = 0; i < ARRAY_SIZE(value->data); i++) + value->data[i] = remap->data[value->data[i]]; + } else + if (M0209E.v02_07 != 1) + return -EINVAL; + + train->mask |= 1 << M0205E.type; + return 0; +} + +static int +nve0_ram_train_init_0(struct nouveau_fb *pfb, struct nve0_ram_train *train) +{ + int i, j; + + if ((train->mask & 0x03d3) != 0x03d3) { + nv_warn(pfb, "missing link training data\n"); + return -EINVAL; + } + + for (i = 0; i < 0x30; i++) { + for (j = 0; j < 8; j += 4) { + nv_wr32(pfb, 0x10f968 + j, 0x00000000 | (i << 8)); + nv_wr32(pfb, 0x10f920 + j, 0x00000000 | + train->type08.data[i] << 4 | + train->type06.data[i]); + nv_wr32(pfb, 0x10f918 + j, train->type00.data[i]); + nv_wr32(pfb, 0x10f920 + j, 0x00000100 | + train->type09.data[i] << 4 | + train->type07.data[i]); + nv_wr32(pfb, 0x10f918 + j, train->type01.data[i]); + } + } + + for (j = 0; j < 8; j += 4) { + for (i = 0; i < 0x100; i++) { + nv_wr32(pfb, 0x10f968 + j, i); + nv_wr32(pfb, 0x10f900 + j, train->type04.data[i]); + } + } + + return 0; +} + +static int +nve0_ram_train_init(struct nouveau_fb *pfb) +{ + u8 ramcfg = nvbios_ramcfg_index(nv_subdev(pfb)); + struct nve0_ram_train *train; + int ret = -ENOMEM, i; + + if ((train = kzalloc(sizeof(*train), GFP_KERNEL))) { + for (i = 0; i < 0x100; i++) { + ret = nve0_ram_train_type(pfb, i, ramcfg, train); + if (ret && ret != -ENOENT) + break; + } + } + + switch (pfb->ram->type) { + case NV_MEM_TYPE_GDDR5: + ret = nve0_ram_train_init_0(pfb, train); + break; + default: + ret = 0; + break; + } + + kfree(train); + return ret; +} + int nve0_ram_init(struct nouveau_object *object) { struct nouveau_fb *pfb = (void *)object->parent; struct nve0_ram *ram = (void *)object; struct nouveau_bios *bios = nouveau_bios(pfb); - static const u8 train0[] = { - 0x00, 0xff, 0xff, 0x00, 0xff, 0x00, - 0x00, 0xff, 0xff, 0x00, 0xff, 0x00, - }; - static const u32 train1[] = { - 0x00000000, 0xffffffff, - 0x55555555, 0xaaaaaaaa, - 0x33333333, 0xcccccccc, - 0xf0f0f0f0, 0x0f0f0f0f, - 0x00ff00ff, 0xff00ff00, - 0x0000ffff, 0xffff0000, - }; u8 ver, hdr, cnt, len, snr, ssz; u32 data, save; int ret, i; @@ -1190,37 +1315,7 @@ nve0_ram_init(struct nouveau_object *object) nv_wr32(pfb, 0x10ecc0, 0xffffffff); nv_mask(pfb, 0x10f160, 0x00000010, 0x00000010); - switch (ram->base.type) { - case NV_MEM_TYPE_GDDR5: - for (i = 0; i < 0x30; i++) { - nv_wr32(pfb, 0x10f968, 0x00000000 | (i << 8)); - nv_wr32(pfb, 0x10f920, 0x00000000 | train0[i % 12]); - nv_wr32(pfb, 0x10f918, train1[i % 12]); - nv_wr32(pfb, 0x10f920, 0x00000100 | train0[i % 12]); - nv_wr32(pfb, 0x10f918, train1[i % 12]); - - nv_wr32(pfb, 0x10f96c, 0x00000000 | (i << 8)); - nv_wr32(pfb, 0x10f924, 0x00000000 | train0[i % 12]); - nv_wr32(pfb, 0x10f91c, train1[i % 12]); - nv_wr32(pfb, 0x10f924, 0x00000100 | train0[i % 12]); - nv_wr32(pfb, 0x10f91c, train1[i % 12]); - } - - for (i = 0; i < 0x100; i++) { - nv_wr32(pfb, 0x10f968, i); - nv_wr32(pfb, 0x10f900, train1[2 + (i & 1)]); - } - - for (i = 0; i < 0x100; i++) { - nv_wr32(pfb, 0x10f96c, i); - nv_wr32(pfb, 0x10f904, train1[2 + (i & 1)]); - } - break; - default: - break; - } - - return 0; + return nve0_ram_train_init(pfb); } static int -- GitLab