diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/falcon/v1.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/falcon/v1.c | 266 |
1 files changed, 266 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 000000000000..b537f111f39c --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvkm/falcon/v1.c @@ -0,0 +1,266 @@ +/* + * 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> + +static 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, tag++); + nvkm_falcon_wr32(falcon, 0x184, ((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, tag++); + nvkm_falcon_wr32(falcon, 0x184, extra & (BIT(rem * 8) - 1)); + ++i; + } + + /* code must be padded to 0x40 words */ + for (; i & 0x3f; i++) + nvkm_falcon_wr32(falcon, 0x184, 0); +} + +static 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 * 16), start | (0x1 << 24)); + for (i = 0; i < size / 4; i++) + nvkm_falcon_wr32(falcon, 0x1c4, ((u32 *)data)[i]); + + /* + * If size is not a multiple of 4, mask the last work to ensure garbage + * does not get read + */ + if (rem) { + u32 extra = ((u32 *)data)[i]; + + nvkm_falcon_wr32(falcon, 0x1c4, extra & (BIT(rem * 8) - 1)); + } +} + +static void +nvkm_falcon_v1_read_dmem(struct nvkm_falcon *falcon, u32 start, u32 size, + u8 port, void *data) +{ + u8 rem = size % 4; + int i; + + size -= rem; + + nvkm_falcon_wr32(falcon, 0x1c0 + (port * 16), start | (0x1 << 25)); + for (i = 0; i < size / 4; i++) + ((u32 *)data)[i] = nvkm_falcon_rd32(falcon, 0x1c4); + + /* + * If size is not a multiple of 4, mask the last work to ensure garbage + * does not get read + */ + if (rem) { + u32 extra = nvkm_falcon_rd32(falcon, 0x1c4); + + for (i = size; i < size + rem; i++) { + ((u8 *)data)[i] = (u8)(extra & 0xff); + extra >>= 8; + } + } +} + +static void +nvkm_falcon_v1_bind_context(struct nvkm_falcon *falcon, struct nvkm_gpuobj *ctx) +{ + u32 inst_loc; + + /* disable instance block binding */ + if (ctx == NULL) { + nvkm_falcon_wr32(falcon, 0x10c, 0x0); + return; + } + + nvkm_falcon_wr32(falcon, 0x10c, 0x1); + + /* setup apertures - virtual */ + nvkm_falcon_wr32(falcon, 0xe00 + 4 * FALCON_DMAIDX_UCODE, 0x4); + nvkm_falcon_wr32(falcon, 0xe00 + 4 * FALCON_DMAIDX_VIRT, 0x0); + /* setup apertures - physical */ + nvkm_falcon_wr32(falcon, 0xe00 + 4 * FALCON_DMAIDX_PHYS_VID, 0x4); + nvkm_falcon_wr32(falcon, 0xe00 + 4 * FALCON_DMAIDX_PHYS_SYS_COH, 0x5); + nvkm_falcon_wr32(falcon, 0xe00 + 4 * FALCON_DMAIDX_PHYS_SYS_NCOH, 0x6); + + /* Set context */ + switch (nvkm_memory_target(ctx->memory)) { + case NVKM_MEM_TARGET_VRAM: inst_loc = 0; break; + case NVKM_MEM_TARGET_NCOH: inst_loc = 3; break; + default: + WARN_ON(1); + return; + } + + /* Enable context */ + nvkm_falcon_mask(falcon, 0x048, 0x1, 0x1); + nvkm_falcon_wr32(falcon, 0x480, + ((ctx->addr >> 12) & 0xfffffff) | + (inst_loc << 28) | (1 << 30)); +} + +static void +nvkm_falcon_v1_set_start_addr(struct nvkm_falcon *falcon, u32 start_addr) +{ + nvkm_falcon_wr32(falcon, 0x104, start_addr); +} + +static 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); +} + +static int +nvkm_falcon_v1_wait_for_halt(struct nvkm_falcon *falcon, u32 ms) +{ + struct nvkm_device *device = falcon->owner->device; + int ret; + + ret = nvkm_wait_msec(device, ms, falcon->addr + 0x100, 0x10, 0x10); + if (ret < 0) + return ret; + + return 0; +} + +static int +nvkm_falcon_v1_clear_interrupt(struct nvkm_falcon *falcon, u32 mask) +{ + struct nvkm_device *device = falcon->owner->device; + int ret; + + /* clear interrupt(s) */ + nvkm_falcon_mask(falcon, 0x004, mask, mask); + /* wait until interrupts are cleared */ + ret = nvkm_wait_msec(device, 10, falcon->addr + 0x008, mask, 0x0); + if (ret < 0) + return ret; + + return 0; +} + +static int +falcon_v1_wait_idle(struct nvkm_falcon *falcon) +{ + struct nvkm_device *device = falcon->owner->device; + int ret; + + ret = nvkm_wait_msec(device, 10, falcon->addr + 0x04c, 0xffff, 0x0); + if (ret < 0) + return ret; + + return 0; +} + +static int +nvkm_falcon_v1_enable(struct nvkm_falcon *falcon) +{ + struct nvkm_device *device = falcon->owner->device; + int ret; + + ret = nvkm_wait_msec(device, 10, falcon->addr + 0x10c, 0x6, 0x0); + if (ret < 0) { + nvkm_error(falcon->user, "Falcon mem scrubbing timeout\n"); + return ret; + } + + ret = falcon_v1_wait_idle(falcon); + if (ret) + return ret; + + /* enable IRQs */ + nvkm_falcon_wr32(falcon, 0x010, 0xff); + + return 0; +} + +static void +nvkm_falcon_v1_disable(struct nvkm_falcon *falcon) +{ + /* disable IRQs and wait for any previous code to complete */ + nvkm_falcon_wr32(falcon, 0x014, 0xff); + falcon_v1_wait_idle(falcon); +} + +static const struct nvkm_falcon_func +nvkm_falcon_v1 = { + .load_imem = nvkm_falcon_v1_load_imem, + .load_dmem = nvkm_falcon_v1_load_dmem, + .read_dmem = nvkm_falcon_v1_read_dmem, + .bind_context = nvkm_falcon_v1_bind_context, + .start = nvkm_falcon_v1_start, + .wait_for_halt = nvkm_falcon_v1_wait_for_halt, + .clear_interrupt = nvkm_falcon_v1_clear_interrupt, + .enable = nvkm_falcon_v1_enable, + .disable = nvkm_falcon_v1_disable, + .set_start_addr = nvkm_falcon_v1_set_start_addr, +}; + +int +nvkm_falcon_v1_new(struct nvkm_subdev *owner, const char *name, u32 addr, + struct nvkm_falcon **pfalcon) +{ + struct nvkm_falcon *falcon; + if (!(falcon = *pfalcon = kzalloc(sizeof(*falcon), GFP_KERNEL))) + return -ENOMEM; + nvkm_falcon_ctor(&nvkm_falcon_v1, owner, name, addr, falcon); + return 0; +} |