diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvkm/subdev/pmu/base.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/pmu/base.c | 227 |
1 files changed, 44 insertions, 183 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/pmu/base.c b/drivers/gpu/drm/nouveau/nvkm/subdev/pmu/base.c index 8dd164d13043..e611ce80f8ef 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/pmu/base.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/pmu/base.c @@ -32,225 +32,85 @@ nvkm_pmu_pgob(struct nvkm_pmu *pmu, bool enable) pmu->func->pgob(pmu, enable); } -int -nvkm_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; -} - static void nvkm_pmu_recv(struct work_struct *work) { - struct nvkm_pmu *pmu = container_of(work, struct nvkm_pmu, recv.work); - 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; - } - } + struct nvkm_pmu *pmu = container_of(work, typeof(*pmu), recv.work); + return pmu->func->recv(pmu); +} - /* 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); +int +nvkm_pmu_send(struct nvkm_pmu *pmu, u32 reply[2], + u32 process, u32 message, u32 data0, u32 data1) +{ + if (!pmu || !pmu->func->send) + return -ENODEV; + return pmu->func->send(pmu, reply, process, message, data0, data1); } static void nvkm_pmu_intr(struct nvkm_subdev *subdev) { struct nvkm_pmu *pmu = nvkm_pmu(subdev); - struct nvkm_device *device = pmu->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); - } + if (!pmu->func->intr) + return; + pmu->func->intr(pmu); } static int nvkm_pmu_fini(struct nvkm_subdev *subdev, bool suspend) { struct nvkm_pmu *pmu = nvkm_pmu(subdev); - struct nvkm_device *device = pmu->subdev.device; - nvkm_wr32(device, 0x10a014, 0x00000060); + if (pmu->func->fini) + pmu->func->fini(pmu); + flush_work(&pmu->recv.work); return 0; } static int -nvkm_pmu_init(struct nvkm_subdev *subdev) +nvkm_pmu_reset(struct nvkm_pmu *pmu) { - struct nvkm_pmu *pmu = nvkm_pmu(subdev); struct nvkm_device *device = pmu->subdev.device; - int i; - /* prevent previous ucode from running, wait for idle, reset */ - nvkm_wr32(device, 0x10a014, 0x0000ffff); /* INTR_EN_CLR = ALL */ + if (!(nvkm_rd32(device, 0x000200) & 0x00002000)) + return 0; + + /* Inhibit interrupts, and wait for idle. */ + nvkm_wr32(device, 0x10a014, 0x0000ffff); nvkm_msec(device, 2000, if (!nvkm_rd32(device, 0x10a04c)) break; ); - nvkm_mask(device, 0x000200, 0x00002000, 0x00000000); - nvkm_mask(device, 0x000200, 0x00002000, 0x00002000); - nvkm_rd32(device, 0x000200); + + /* Reset. */ + pmu->func->reset(pmu); + + /* Wait for IMEM/DMEM scrubbing to be complete. */ nvkm_msec(device, 2000, if (!(nvkm_rd32(device, 0x10a10c) & 0x00000006)) break; ); - /* 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; + return 0; +} - /* 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; +static int +nvkm_pmu_preinit(struct nvkm_subdev *subdev) +{ + struct nvkm_pmu *pmu = nvkm_pmu(subdev); + return nvkm_pmu_reset(pmu); +} - nvkm_wr32(device, 0x10a010, 0x000000e0); - return 0; +static int +nvkm_pmu_init(struct nvkm_subdev *subdev) +{ + struct nvkm_pmu *pmu = nvkm_pmu(subdev); + int ret = nvkm_pmu_reset(pmu); + if (ret == 0 && pmu->func->init) + ret = pmu->func->init(pmu); + return ret; } static void * @@ -262,6 +122,7 @@ nvkm_pmu_dtor(struct nvkm_subdev *subdev) static const struct nvkm_subdev_func nvkm_pmu = { .dtor = nvkm_pmu_dtor, + .preinit = nvkm_pmu_preinit, .init = nvkm_pmu_init, .fini = nvkm_pmu_fini, .intr = nvkm_pmu_intr, |