diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/fb/rammcp77.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/fb/rammcp77.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/fb/rammcp77.c b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/rammcp77.c new file mode 100644 index 000000000..7de18e53e --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/fb/rammcp77.c @@ -0,0 +1,86 @@ +/* + * 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 + */ +#define mcp77_ram(p) container_of((p), struct mcp77_ram, base) +#include "ram.h" + +struct mcp77_ram { + struct nvkm_ram base; + u64 poller_base; +}; + +static int +mcp77_ram_init(struct nvkm_ram *base) +{ + struct mcp77_ram *ram = mcp77_ram(base); + struct nvkm_device *device = ram->base.fb->subdev.device; + u32 dniso = ((ram->base.size - (ram->poller_base + 0x00)) >> 5) - 1; + u32 hostnb = ((ram->base.size - (ram->poller_base + 0x20)) >> 5) - 1; + u32 flush = ((ram->base.size - (ram->poller_base + 0x40)) >> 5) - 1; + + /* Enable NISO poller for various clients and set their associated + * read address, only for MCP77/78 and MCP79/7A. (fd#27501) + */ + nvkm_wr32(device, 0x100c18, dniso); + nvkm_mask(device, 0x100c14, 0x00000000, 0x00000001); + nvkm_wr32(device, 0x100c1c, hostnb); + nvkm_mask(device, 0x100c14, 0x00000000, 0x00000002); + nvkm_wr32(device, 0x100c24, flush); + nvkm_mask(device, 0x100c14, 0x00000000, 0x00010000); + return 0; +} + +static const struct nvkm_ram_func +mcp77_ram_func = { + .init = mcp77_ram_init, +}; + +int +mcp77_ram_new(struct nvkm_fb *fb, struct nvkm_ram **pram) +{ + struct nvkm_device *device = fb->subdev.device; + u32 rsvd_head = ( 256 * 1024); /* vga memory */ + u32 rsvd_tail = (1024 * 1024) + 0x1000; /* vbios etc + poller mem */ + u64 base = (u64)nvkm_rd32(device, 0x100e10) << 12; + u64 size = (u64)nvkm_rd32(device, 0x100e14) << 12; + struct mcp77_ram *ram; + int ret; + + if (!(ram = kzalloc(sizeof(*ram), GFP_KERNEL))) + return -ENOMEM; + *pram = &ram->base; + + ret = nvkm_ram_ctor(&mcp77_ram_func, fb, NVKM_RAM_TYPE_STOLEN, + size, &ram->base); + if (ret) + return ret; + + ram->poller_base = size - rsvd_tail; + ram->base.stolen = base; + nvkm_mm_fini(&ram->base.vram); + + return nvkm_mm_init(&ram->base.vram, NVKM_RAM_MM_NORMAL, + rsvd_head >> NVKM_RAM_MM_SHIFT, + (size - rsvd_head - rsvd_tail) >> + NVKM_RAM_MM_SHIFT, 1); +} |