diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/pmu/gt215.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/pmu/gt215.c | 216 |
1 files changed, 212 insertions, 4 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/pmu/gt215.c b/drivers/gpu/drm/nouveau/nvkm/subdev/pmu/gt215.c index 8ba7fa4ca75b..90d428b3be97 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/pmu/gt215.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/pmu/gt215.c @@ -24,21 +24,229 @@ #include "priv.h" #include "fuc/gt215.fuc3.h" -static void +#include <subdev/timer.h> + +int +gt215_pmu_send(struct nvkm_pmu *pmu, u32 reply[2], + u32 process, u32 message, u32 data0, u32 data1) +{ + struct nvkm_subdev *subdev = &pmu->subdev; + struct nvkm_device *device = subdev->device; + u32 addr; + + mutex_lock(&subdev->mutex); + /* wait for a free slot in the fifo */ + addr = nvkm_rd32(device, 0x10a4a0); + if (nvkm_msec(device, 2000, + u32 tmp = nvkm_rd32(device, 0x10a4b0); + if (tmp != (addr ^ 8)) + break; + ) < 0) { + mutex_unlock(&subdev->mutex); + return -EBUSY; + } + + /* we currently only support a single process at a time waiting + * on a synchronous reply, take the PMU mutex and tell the + * receive handler what we're waiting for + */ + if (reply) { + pmu->recv.message = message; + pmu->recv.process = process; + } + + /* acquire data segment access */ + do { + nvkm_wr32(device, 0x10a580, 0x00000001); + } while (nvkm_rd32(device, 0x10a580) != 0x00000001); + + /* write the packet */ + nvkm_wr32(device, 0x10a1c0, 0x01000000 | (((addr & 0x07) << 4) + + pmu->send.base)); + nvkm_wr32(device, 0x10a1c4, process); + nvkm_wr32(device, 0x10a1c4, message); + nvkm_wr32(device, 0x10a1c4, data0); + nvkm_wr32(device, 0x10a1c4, data1); + nvkm_wr32(device, 0x10a4a0, (addr + 1) & 0x0f); + + /* release data segment access */ + nvkm_wr32(device, 0x10a580, 0x00000000); + + /* wait for reply, if requested */ + if (reply) { + wait_event(pmu->recv.wait, (pmu->recv.process == 0)); + reply[0] = pmu->recv.data[0]; + reply[1] = pmu->recv.data[1]; + } + + mutex_unlock(&subdev->mutex); + return 0; +} + +void +gt215_pmu_recv(struct nvkm_pmu *pmu) +{ + struct nvkm_subdev *subdev = &pmu->subdev; + struct nvkm_device *device = subdev->device; + u32 process, message, data0, data1; + + /* nothing to do if GET == PUT */ + u32 addr = nvkm_rd32(device, 0x10a4cc); + if (addr == nvkm_rd32(device, 0x10a4c8)) + return; + + /* acquire data segment access */ + do { + nvkm_wr32(device, 0x10a580, 0x00000002); + } while (nvkm_rd32(device, 0x10a580) != 0x00000002); + + /* read the packet */ + nvkm_wr32(device, 0x10a1c0, 0x02000000 | (((addr & 0x07) << 4) + + pmu->recv.base)); + process = nvkm_rd32(device, 0x10a1c4); + message = nvkm_rd32(device, 0x10a1c4); + data0 = nvkm_rd32(device, 0x10a1c4); + data1 = nvkm_rd32(device, 0x10a1c4); + nvkm_wr32(device, 0x10a4cc, (addr + 1) & 0x0f); + + /* release data segment access */ + nvkm_wr32(device, 0x10a580, 0x00000000); + + /* wake process if it's waiting on a synchronous reply */ + if (pmu->recv.process) { + if (process == pmu->recv.process && + message == pmu->recv.message) { + pmu->recv.data[0] = data0; + pmu->recv.data[1] = data1; + pmu->recv.process = 0; + wake_up(&pmu->recv.wait); + return; + } + } + + /* right now there's no other expected responses from the engine, + * so assume that any unexpected message is an error. + */ + nvkm_warn(subdev, "%c%c%c%c %08x %08x %08x %08x\n", + (char)((process & 0x000000ff) >> 0), + (char)((process & 0x0000ff00) >> 8), + (char)((process & 0x00ff0000) >> 16), + (char)((process & 0xff000000) >> 24), + process, message, data0, data1); +} + +void +gt215_pmu_intr(struct nvkm_pmu *pmu) +{ + struct nvkm_subdev *subdev = &pmu->subdev; + struct nvkm_device *device = subdev->device; + u32 disp = nvkm_rd32(device, 0x10a01c); + u32 intr = nvkm_rd32(device, 0x10a008) & disp & ~(disp >> 16); + + if (intr & 0x00000020) { + u32 stat = nvkm_rd32(device, 0x10a16c); + if (stat & 0x80000000) { + nvkm_error(subdev, "UAS fault at %06x addr %08x\n", + stat & 0x00ffffff, + nvkm_rd32(device, 0x10a168)); + nvkm_wr32(device, 0x10a16c, 0x00000000); + intr &= ~0x00000020; + } + } + + if (intr & 0x00000040) { + schedule_work(&pmu->recv.work); + nvkm_wr32(device, 0x10a004, 0x00000040); + intr &= ~0x00000040; + } + + if (intr & 0x00000080) { + nvkm_info(subdev, "wr32 %06x %08x\n", + nvkm_rd32(device, 0x10a7a0), + nvkm_rd32(device, 0x10a7a4)); + nvkm_wr32(device, 0x10a004, 0x00000080); + intr &= ~0x00000080; + } + + if (intr) { + nvkm_error(subdev, "intr %08x\n", intr); + nvkm_wr32(device, 0x10a004, intr); + } +} + +void +gt215_pmu_fini(struct nvkm_pmu *pmu) +{ + nvkm_wr32(pmu->subdev.device, 0x10a014, 0x00000060); +} + +void gt215_pmu_reset(struct nvkm_pmu *pmu) { struct nvkm_device *device = pmu->subdev.device; - nvkm_mask(device, 0x022210, 0x00000001, 0x00000000); - nvkm_mask(device, 0x022210, 0x00000001, 0x00000001); + nvkm_mask(device, 0x000200, 0x00002000, 0x00000000); + nvkm_mask(device, 0x000200, 0x00002000, 0x00002000); + nvkm_rd32(device, 0x000200); +} + +int +gt215_pmu_init(struct nvkm_pmu *pmu) +{ + struct nvkm_device *device = pmu->subdev.device; + int i; + + /* upload data segment */ + nvkm_wr32(device, 0x10a1c0, 0x01000000); + for (i = 0; i < pmu->func->data.size / 4; i++) + nvkm_wr32(device, 0x10a1c4, pmu->func->data.data[i]); + + /* upload code segment */ + nvkm_wr32(device, 0x10a180, 0x01000000); + for (i = 0; i < pmu->func->code.size / 4; i++) { + if ((i & 0x3f) == 0) + nvkm_wr32(device, 0x10a188, i >> 6); + nvkm_wr32(device, 0x10a184, pmu->func->code.data[i]); + } + + /* start it running */ + nvkm_wr32(device, 0x10a10c, 0x00000000); + nvkm_wr32(device, 0x10a104, 0x00000000); + nvkm_wr32(device, 0x10a100, 0x00000002); + + /* wait for valid host->pmu ring configuration */ + if (nvkm_msec(device, 2000, + if (nvkm_rd32(device, 0x10a4d0)) + break; + ) < 0) + return -EBUSY; + pmu->send.base = nvkm_rd32(device, 0x10a4d0) & 0x0000ffff; + pmu->send.size = nvkm_rd32(device, 0x10a4d0) >> 16; + + /* wait for valid pmu->host ring configuration */ + if (nvkm_msec(device, 2000, + if (nvkm_rd32(device, 0x10a4dc)) + break; + ) < 0) + return -EBUSY; + pmu->recv.base = nvkm_rd32(device, 0x10a4dc) & 0x0000ffff; + pmu->recv.size = nvkm_rd32(device, 0x10a4dc) >> 16; + + nvkm_wr32(device, 0x10a010, 0x000000e0); + return 0; } static const struct nvkm_pmu_func gt215_pmu = { - .reset = gt215_pmu_reset, .code.data = gt215_pmu_code, .code.size = sizeof(gt215_pmu_code), .data.data = gt215_pmu_data, .data.size = sizeof(gt215_pmu_data), + .reset = gt215_pmu_reset, + .init = gt215_pmu_init, + .fini = gt215_pmu_fini, + .intr = gt215_pmu_intr, + .send = gt215_pmu_send, + .recv = gt215_pmu_recv, }; int |