diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/falcon/v1.c')
-rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/falcon/v1.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/falcon/v1.c b/drivers/gpu/drm/nouveau/nvkm/falcon/v1.c new file mode 100644 index 000000000..dd2ddc54a --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/falcon/v1.c @@ -0,0 +1,101 @@ +/* + * Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved. + * + * 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 AUTHORS OR COPYRIGHT HOLDERS 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. + */ +#include "priv.h" + +#include <core/gpuobj.h> +#include <core/memory.h> +#include <subdev/timer.h> + +void +nvkm_falcon_v1_load_imem(struct nvkm_falcon *falcon, void *data, u32 start, + u32 size, u16 tag, u8 port, bool secure) +{ + u8 rem = size % 4; + u32 reg; + int i; + + size -= rem; + + reg = start | BIT(24) | (secure ? BIT(28) : 0); + nvkm_falcon_wr32(falcon, 0x180 + (port * 16), reg); + for (i = 0; i < size / 4; i++) { + /* write new tag every 256B */ + if ((i & 0x3f) == 0) + nvkm_falcon_wr32(falcon, 0x188 + (port * 16), tag++); + nvkm_falcon_wr32(falcon, 0x184 + (port * 16), ((u32 *)data)[i]); + } + + /* + * If size is not a multiple of 4, mask the last work to ensure garbage + * does not get written + */ + if (rem) { + u32 extra = ((u32 *)data)[i]; + + /* write new tag every 256B */ + if ((i & 0x3f) == 0) + nvkm_falcon_wr32(falcon, 0x188 + (port * 16), tag++); + nvkm_falcon_wr32(falcon, 0x184 + (port * 16), + extra & (BIT(rem * 8) - 1)); + ++i; + } + + /* code must be padded to 0x40 words */ + for (; i & 0x3f; i++) + nvkm_falcon_wr32(falcon, 0x184 + (port * 16), 0); +} + +void +nvkm_falcon_v1_load_dmem(struct nvkm_falcon *falcon, void *data, u32 start, + u32 size, u8 port) +{ + u8 rem = size % 4; + int i; + + size -= rem; + + nvkm_falcon_wr32(falcon, 0x1c0 + (port * 8), start | (0x1 << 24)); + for (i = 0; i < size / 4; i++) + nvkm_falcon_wr32(falcon, 0x1c4 + (port * 8), ((u32 *)data)[i]); + + /* + * If size is not a multiple of 4, mask the last word to ensure garbage + * does not get written + */ + if (rem) { + u32 extra = ((u32 *)data)[i]; + + nvkm_falcon_wr32(falcon, 0x1c4 + (port * 8), + extra & (BIT(rem * 8) - 1)); + } +} + +void +nvkm_falcon_v1_start(struct nvkm_falcon *falcon) +{ + u32 reg = nvkm_falcon_rd32(falcon, 0x100); + + if (reg & BIT(6)) + nvkm_falcon_wr32(falcon, 0x130, 0x2); + else + nvkm_falcon_wr32(falcon, 0x100, 0x2); +} |