diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgp100.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgp100.c | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgp100.c b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgp100.c new file mode 100644 index 000000000000..f3be408b5e5e --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgp100.c @@ -0,0 +1,146 @@ +/* + * 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 + */ +#include "ram.h" + +#include <subdev/bios.h> +#include <subdev/bios/init.h> +#include <subdev/bios/rammap.h> + +static int +gp100_ram_init(struct nvkm_ram *ram) +{ + struct nvkm_subdev *subdev = &ram->fb->subdev; + struct nvkm_device *device = subdev->device; + struct nvkm_bios *bios = device->bios; + u8 ver, hdr, cnt, len, snr, ssz; + u32 data; + int i; + + /* run a bunch of tables from rammap table. there's actually + * individual pointers for each rammap entry too, but, nvidia + * seem to just run the last two entries' scripts early on in + * their init, and never again.. we'll just run 'em all once + * for now. + * + * i strongly suspect that each script is for a separate mode + * (likely selected by 0x9a065c's lower bits?), and the + * binary driver skips the one that's already been setup by + * the init tables. + */ + data = nvbios_rammapTe(bios, &ver, &hdr, &cnt, &len, &snr, &ssz); + if (!data || hdr < 0x15) + return -EINVAL; + + cnt = nvbios_rd08(bios, data + 0x14); /* guess at count */ + data = nvbios_rd32(bios, data + 0x10); /* guess u32... */ + if (cnt) { + u32 save = nvkm_rd32(device, 0x9a065c) & 0x000000f0; + for (i = 0; i < cnt; i++, data += 4) { + if (i != save >> 4) { + nvkm_mask(device, 0x9a065c, 0x000000f0, i << 4); + nvbios_exec(&(struct nvbios_init) { + .subdev = subdev, + .bios = bios, + .offset = nvbios_rd32(bios, data), + .execute = 1, + }); + } + } + nvkm_mask(device, 0x9a065c, 0x000000f0, save); + } + + nvkm_mask(device, 0x9a0584, 0x11000000, 0x00000000); + nvkm_wr32(device, 0x10ecc0, 0xffffffff); + nvkm_mask(device, 0x9a0160, 0x00000010, 0x00000010); + return 0; +} + +static const struct nvkm_ram_func +gp100_ram_func = { + .init = gp100_ram_init, + .get = gf100_ram_get, + .put = gf100_ram_put, +}; + +int +gp100_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram) +{ + struct nvkm_ram *ram; + struct nvkm_subdev *subdev = &fb->subdev; + struct nvkm_device *device = subdev->device; + enum nvkm_ram_type type = nvkm_fb_bios_memtype(device->bios); + const u32 rsvd_head = ( 256 * 1024); /* vga memory */ + const u32 rsvd_tail = (1024 * 1024); /* vbios etc */ + u32 fbpa_num = nvkm_rd32(device, 0x022438), fbpa; + u32 fbio_opt = nvkm_rd32(device, 0x021c14); + u64 part, size = 0, comm = ~0ULL; + bool mixed = false; + int ret; + + nvkm_debug(subdev, "022438: %08x\n", fbpa_num); + nvkm_debug(subdev, "021c14: %08x\n", fbio_opt); + for (fbpa = 0; fbpa < fbpa_num; fbpa++) { + if (!(fbio_opt & (1 << fbpa))) { + part = nvkm_rd32(device, 0x90020c + (fbpa * 0x4000)); + nvkm_debug(subdev, "fbpa %02x: %lld MiB\n", fbpa, part); + part = part << 20; + if (part != comm) { + if (comm != ~0ULL) + mixed = true; + comm = min(comm, part); + } + size = size + part; + } + } + + ret = nvkm_ram_new_(&gp100_ram_func, fb, type, size, 0, &ram); + *pram = ram; + if (ret) + return ret; + + nvkm_mm_fini(&ram->vram); + + if (mixed) { + ret = nvkm_mm_init(&ram->vram, rsvd_head >> NVKM_RAM_MM_SHIFT, + ((comm * fbpa_num) - rsvd_head) >> + NVKM_RAM_MM_SHIFT, 1); + if (ret) + return ret; + + ret = nvkm_mm_init(&ram->vram, (0x1000000000ULL + comm) >> + NVKM_RAM_MM_SHIFT, + (size - (comm * fbpa_num) - rsvd_tail) >> + NVKM_RAM_MM_SHIFT, 1); + if (ret) + return ret; + } else { + ret = nvkm_mm_init(&ram->vram, rsvd_head >> NVKM_RAM_MM_SHIFT, + (size - rsvd_head - rsvd_tail) >> + NVKM_RAM_MM_SHIFT, 1); + if (ret) + return ret; + } + + return 0; +} |