/* * Copyright 2014 Advanced Micro Devices, Inc. * Copyright 2008 Red Hat Inc. * Copyright 2009 Jerome Glisse. * * 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. * */ #include "amdgpu.h" #include "amdgpu_gfx.h" #include "amdgpu_rlc.h" #include "amdgpu_ras.h" /* delay 0.1 second to enable gfx off feature */ #define GFX_OFF_DELAY_ENABLE msecs_to_jiffies(100) /* * GPU GFX IP block helpers function. */ int amdgpu_gfx_mec_queue_to_bit(struct amdgpu_device *adev, int mec, int pipe, int queue) { int bit = 0; bit += mec * adev->gfx.mec.num_pipe_per_mec * adev->gfx.mec.num_queue_per_pipe; bit += pipe * adev->gfx.mec.num_queue_per_pipe; bit += queue; return bit; } void amdgpu_gfx_bit_to_mec_queue(struct amdgpu_device *adev, int bit, int *mec, int *pipe, int *queue) { *queue = bit % adev->gfx.mec.num_queue_per_pipe; *pipe = (bit / adev->gfx.mec.num_queue_per_pipe) % adev->gfx.mec.num_pipe_per_mec; *mec = (bit / adev->gfx.mec.num_queue_per_pipe) / adev->gfx.mec.num_pipe_per_mec; } bool amdgpu_gfx_is_mec_queue_enabled(struct amdgpu_device *adev, int mec, int pipe, int queue) { return test_bit(amdgpu_gfx_mec_queue_to_bit(adev, mec, pipe, queue), adev->gfx.mec.queue_bitmap); } int amdgpu_gfx_me_queue_to_bit(struct amdgpu_device *adev, int me, int pipe, int queue) { int bit = 0; bit += me * adev->gfx.me.num_pipe_per_me * adev->gfx.me.num_queue_per_pipe; bit += pipe * adev->gfx.me.num_queue_per_pipe; bit += queue; return bit; } void amdgpu_gfx_bit_to_me_queue(struct amdgpu_device *adev, int bit, int *me, int *pipe, int *queue) { *queue = bit % adev->gfx.me.num_queue_per_pipe; *pipe = (bit / adev->gfx.me.num_queue_per_pipe) % adev->gfx.me.num_pipe_per_me; *me = (bit / adev->gfx.me.num_queue_per_pipe) / adev->gfx.me.num_pipe_per_me; } bool amdgpu_gfx_is_me_queue_enabled(struct amdgpu_device *adev, int me, int pipe, int queue) { return test_bit(amdgpu_gfx_me_queue_to_bit(adev, me, pipe, queue), adev->gfx.me.queue_bitmap); } /** * amdgpu_gfx_scratch_get - Allocate a scratch register * * @adev: amdgpu_device pointer * @reg: scratch register mmio offset * * Allocate a CP scratch register for use by the driver (all asics). * Returns 0 on success or -EINVAL on failure. */ int amdgpu_gfx_scratch_get(struct amdgpu_device *adev, uint32_t *reg) { int i; i = ffs(adev->gfx.scratch.free_mask); if (i != 0 && i <= adev->gfx.scratch.num_reg) { i--; adev->gfx.scratch.free_mask &= ~(1u << i); *reg = adev->gfx.scratch.reg_base + i; return 0; } return -EINVAL; } /** * amdgpu_gfx_scratch_free - Free a scratch register * * @adev: amdgpu_device pointer * @reg: scratch register mmio offset * * Free a CP scratch register allocated for use by the driver (all asics) */ void amdgpu_gfx_scratch_free(struct amdgpu_device *adev, uint32_t reg) { adev->gfx.scratch.free_mask |= 1u << (reg - adev->gfx.scratch.reg_base); } /** * amdgpu_gfx_parse_disable_cu - Parse the disable_cu module parameter * * @mask: array in which the per-shader array disable masks will be stored * @max_se: number of SEs * @max_sh: number of SHs * * The bitmask of CUs to be disabled in the shader array determined by se and * sh is stored in mask[se * max_sh + sh]. */ void amdgpu_gfx_parse_disable_cu(unsigned *mask, unsigned max_se, unsigned max_sh) { unsigned se, sh, cu; const char *p; memset(mask, 0, sizeof(*mask) * max_se * max_sh); if (!amdgpu_disable_cu || !*amdgpu_disable_cu) return; p = amdgpu_disable_cu; for (;;) { char *next; int ret = sscanf(p, "%u.%u.%u", &se, &sh, &cu); if (ret < 3) { DRM_ERROR("amdgpu: could not parse disable_cu\n"); return; } if (se < max_se && sh < max_sh && cu < 16) { DRM_INFO("amdgpu: disabling CU %u.%u.%u\n", se, sh, cu); mask[se * max_sh + sh] |= 1u << cu; } else { DRM_ERROR("amdgpu: disable_cu %u.%u.%u is out of range\n", se, sh, cu); } next = strchr(p, ','); if (!next) break; p = next + 1; } } static bool amdgpu_gfx_is_multipipe_capable(struct amdgpu_device *adev) { if (amdgpu_compute_multipipe != -1) { DRM_INFO("amdgpu: forcing compute pipe policy %d\n", amdgpu_compute_multipipe); return amdgpu_compute_multipipe == 1; } /* FIXME: spreading the queues across pipes causes perf regressions * on POLARIS11 compute workloads */ if (adev->asic_type == CHIP_POLARIS11) return false; return adev->gfx.mec.num_mec > 1; } void amdgpu_gfx_compute_queue_acquire(struct amdgpu_device *adev) { int i, queue, pipe, mec; bool multipipe_policy = amdgpu_gfx_is_multipipe_capable(adev); /* policy for amdgpu compute queue ownership */ for (i = 0; i < AMDGPU_MAX_COMPUTE_QUEUES; ++i) { queue = i % adev->gfx.mec.num_queue_per_pipe; pipe = (i / adev->gfx.mec.num_queue_per_pipe) % adev->gfx.mec.num_pipe_per_mec; mec = (i / adev->gfx.mec.num_queue_per_pipe) / adev->gfx.mec.num_pipe_per_mec; /* we've run out of HW */ if (mec >= adev->gfx.mec.num_mec) break; if (multipipe_policy) { /* policy: amdgpu owns the first two queues of the first MEC */ if (mec == 0 && queue < 2) set_bit(i, adev->gfx.mec.queue_bitmap); } else { /* policy: amdgpu owns all queues in the first pipe */ if (mec == 0 && pipe == 0) set_bit(i, adev->gfx.mec.queue_bitmap); } } /* update the number of active compute rings */ adev->gfx.num_compute_rings = bitmap_weight(adev->gfx.mec.queue_bitmap, AMDGPU_MAX_COMPUTE_QUEUES); /* If you hit this case and edited the policy, you probably just * need to increase AMDGPU_MAX_COMPUTE_RINGS */ if (WARN_ON(adev->gfx.num_compute_rings > AMDGPU_MAX_COMPUTE_RINGS)) adev->gfx.num_compute_rings = AMDGPU_MAX_COMPUTE_RINGS; } void amdgpu_gfx_graphics_queue_acquire(struct amdgpu_device *adev) { int i, queue, pipe, me; for (i = 0; i < AMDGPU_MAX_GFX_QUEUES; ++i) { queue = i % adev->gfx.me.num_queue_per_pipe; pipe = (i / adev->gfx.me.num_queue_per_pipe) % adev->gfx.me.num_pipe_per_me; me = (i / adev->gfx.me.num_queue_per_pipe) / adev->gfx.me.num_pipe_per_me; if (me >= adev->gfx.me.num_me) break; /* policy: amdgpu owns the first queue per pipe at this stage * will extend to mulitple queues per pipe later */ if (me == 0 && queue < 1) set_bit(i, adev->gfx.me.queue_bitmap); } /* update the number of active graphics rings */ adev->gfx.num_gfx_rings = bitmap_weight(adev->gfx.me.queue_bitmap, AMDGPU_MAX_GFX_QUEUES); } static int amdgpu_gfx_kiq_acquire(struct amdgpu_device *adev, struct amdgpu_ring *ring) { int queue_bit; int mec, pipe, queue; queue_bit = adev->gfx.mec.num_mec * adev->gfx.mec.num_pipe_per_mec * adev->gfx.mec.num_queue_per_pipe; while (queue_bit-- >= 0) { if (test_bit(queue_bit, adev->gfx.mec.queue_bitmap)) continue; amdgpu_gfx_bit_to_mec_queue(adev, queue_bit, &mec, &pipe, &queue); /* * 1. Using pipes 2/3 from MEC 2 seems cause problems. * 2. It must use queue id 0, because CGPG_IDLE/SAVE/LOAD/RUN * only can be issued on queue 0. */ if ((mec == 1 && pipe > 1) || queue != 0) continue; ring->me = mec + 1; ring->pipe = pipe; ring->queue = queue; return 0; } dev_err(adev->dev, "Failed to find a queue for KIQ\n"); return -EINVAL; } int amdgpu_gfx_kiq_init_ring(struct amdgpu_device *adev, struct amdgpu_ring *ring, struct amdgpu_irq_src *irq) { struct amdgpu_kiq *kiq = &adev->gfx.kiq; int r = 0; spin_lock_init(&kiq->ring_lock); r = amdgpu_device_wb_get(adev, &adev->virt.reg_val_offs); if (r) return r; ring->adev = NULL; ring->ring_obj = NULL; ring->use_doorbell = true; ring->doorbell_index = adev->doorbell_index.kiq; r = amdgpu_gfx_kiq_acquire(adev, ring); if (r) return r; ring->eop_gpu_addr = kiq->eop_gpu_addr; sprintf(ring->name, "kiq_%d.%d.%d", ring->me, ring->pipe, ring->queue); r = amdgpu_ring_init(adev, ring, 1024, irq, AMDGPU_CP_KIQ_IRQ_DRIVER0); if (r) dev_warn(adev->dev, "(%d) failed to init kiq ring\n", r); return r; } void amdgpu_gfx_kiq_free_ring(struct amdgpu_ring *ring, struct amdgpu_irq_src *irq) { amdgpu_device_wb_free(ring->adev, ring->adev->virt.reg_val_offs); amdgpu_ring_fini(ring); } void amdgpu_gfx_kiq_fini(struct amdgpu_device *adev) { struct amdgpu_kiq *kiq = &adev->gfx.kiq; amdgpu_bo_free_kernel(&kiq->eop_obj, &kiq->eop_gpu_addr, NULL); } int amdgpu_gfx_kiq_init(struct amdgpu_device *adev, unsigned hpd_size) { int r; u32 *hpd; struct amdgpu_kiq *kiq = &adev->gfx.kiq; r = amdgpu_bo_create_kernel(adev, hpd_size, PAGE_SIZE, AMDGPU_GEM_DOMAIN_GTT, &kiq->eop_obj, &kiq->eop_gpu_addr, (void **)&hpd); if (r) { dev_warn(adev->dev, "failed to create KIQ bo (%d).\n", r); return r; } memset(hpd, 0, hpd_size); r = amdgpu_bo_reserve(kiq->eop_obj, true); if (unlikely(r != 0)) dev_warn(adev->dev, "(%d) reserve kiq eop bo failed\n", r); amdgpu_bo_kunmap(kiq->eop_obj); amdgpu_bo_unreserve(kiq->eop_obj); return 0; } /* create MQD for each compute/gfx queue */ int amdgpu_gfx_mqd_sw_init(struct amdgpu_device *adev, unsigned mqd_size) { struct amdgpu_ring *ring = NULL; int r, i; /* create MQD for KIQ */ ring = &adev->gfx.kiq.ring; if (!ring->mqd_obj) { /* originaly the KIQ MQD is put in GTT domain, but for SRIOV VRAM domain is a must * otherwise hypervisor trigger SAVE_VF fail after driver unloaded which mean MQD * deallocated and gart_unbind, to strict diverage we decide to use VRAM domain for * KIQ MQD no matter SRIOV or Bare-metal */ r = amdgpu_bo_create_kernel(adev, mqd_size, PAGE_SIZE, AMDGPU_GEM_DOMAIN_VRAM, &ring->mqd_obj, &ring->mqd_gpu_addr, &ring->mqd_ptr); if (r) { dev_warn(adev->dev, "failed to create ring mqd ob (%d)", r); return r; } /* prepare MQD backup */ adev->gfx.mec.mqd_backup[AMDGPU_MAX_COMPUTE_RINGS] = kmalloc(mqd_size, GFP_KERNEL); if (!adev->gfx.mec.mqd_backup[AMDGPU_MAX_COMPUTE_RINGS]) dev_warn(adev->dev, "no memory to create MQD backup for ring %s\n", ring->name); } if (adev->asic_type >= CHIP_NAVI10 && amdgpu_async_gfx_ring) { /* create MQD for each KGQ */ for (i = 0; i < adev->gfx.num_gfx_rings; i++) { ring = &adev->gfx.gfx_ring[i]; if (!ring->mqd_obj) { r = amdgpu_bo_create_kernel(adev, mqd_size, PAGE_SIZE, AMDGPU_GEM_DOMAIN_GTT, &ring->mqd_obj, &ring->mqd_gpu_addr, &ring->mqd_ptr); if (r) { dev_warn(adev->dev, "failed to create ring mqd bo (%d)", r); return r; } /* prepare MQD backup */ adev->gfx.me.mqd_backup[i] = kmalloc(mqd_size, GFP_KERNEL); if (!adev->gfx.me.mqd_backup[i]) dev_warn(adev->dev, "no memory to create MQD backup for ring %s\n", ring->name); } } } /* create MQD for each KCQ */ for (i = 0; i < adev->gfx.num_compute_rings; i++) { ring = &adev->gfx.compute_ring[i]; if (!ring->mqd_obj) { r = amdgpu_bo_create_kernel(adev, mqd_size, PAGE_SIZE, AMDGPU_GEM_DOMAIN_GTT, &ring->mqd_obj, &ring->mqd_gpu_addr, &ring->mqd_ptr); if (r) { dev_warn(adev->dev, "failed to create ring mqd bo (%d)", r); return r; } /* prepare MQD backup */ adev->gfx.mec.mqd_backup[i] = kmalloc(mqd_size, GFP_KERNEL); if (!adev->gfx.mec.mqd_backup[i]) dev_warn(adev->dev, "no memory to create MQD backup for ring %s\n", ring->name); } } return 0; } void amdgpu_gfx_mqd_sw_fini(struct amdgpu_device *adev) { struct amdgpu_ring *ring = NULL; int i; if (adev->asic_type >= CHIP_NAVI10 && amdgpu_async_gfx_ring) { for (i = 0; i < adev->gfx.num_gfx_rings; i++) { ring = &adev->gfx.gfx_ring[i]; kfree(adev->gfx.me.mqd_backup[i]); amdgpu_bo_free_kernel(&ring->mqd_obj, &ring->mqd_gpu_addr, &ring->mqd_ptr); } } for (i = 0; i < adev->gfx.num_compute_rings; i++) { ring = &adev->gfx.compute_ring[i]; kfree(adev->gfx.mec.mqd_backup[i]); amdgpu_bo_free_kernel(&ring->mqd_obj, &ring->mqd_gpu_addr, &ring->mqd_ptr); } ring = &adev->gfx.kiq.ring; if (adev->asic_type >= CHIP_NAVI10 && amdgpu_async_gfx_ring) kfree(adev->gfx.me.mqd_backup[AMDGPU_MAX_GFX_RINGS]); kfree(adev->gfx.mec.mqd_backup[AMDGPU_MAX_COMPUTE_RINGS]); amdgpu_bo_free_kernel(&ring->mqd_obj, &ring->mqd_gpu_addr, &ring->mqd_ptr); } int amdgpu_gfx_disable_kcq(struct amdgpu_device *adev) { struct amdgpu_kiq *kiq = &adev->gfx.kiq; struct amdgpu_ring *kiq_ring = &kiq->ring; int i; if (!kiq->pmf || !kiq->pmf->kiq_unmap_queues) return -EINVAL; if (amdgpu_ring_alloc(kiq_ring, kiq->pmf->unmap_queues_size * adev->gfx.num_compute_rings)) return -ENOMEM; for (i = 0; i < adev->gfx.num_compute_rings; i++) kiq->pmf->kiq_unmap_queues(kiq_ring, &adev->gfx.compute_ring[i], RESET_QUEUES, 0, 0); return amdgpu_ring_test_ring(kiq_ring); } int amdgpu_gfx_enable_kcq(struct amdgpu_device *adev) { struct amdgpu_kiq *kiq = &adev->gfx.kiq; struct amdgpu_ring *kiq_ring = &adev->gfx.kiq.ring; uint64_t queue_mask = 0; int r, i; if (!kiq->pmf || !kiq->pmf->kiq_map_queues || !kiq->pmf->kiq_set_resources) return -EINVAL; for (i = 0; i < AMDGPU_MAX_COMPUTE_QUEUES; ++i) { if (!test_bit(i, adev->gfx.mec.queue_bitmap)) continue; /* This situation may be hit in the future if a new HW * generation exposes more than 64 queues. If so, the * definition of queue_mask needs updating */ if (WARN_ON(i > (sizeof(queue_mask)*8))) { DRM_ERROR("Invalid KCQ enabled: %d\n", i); break; } queue_mask |= (1ull << i); } DRM_INFO("kiq ring mec %d pipe %d q %d\n", kiq_ring->me, kiq_ring->pipe, kiq_ring->queue); r = amdgpu_ring_alloc(kiq_ring, kiq->pmf->map_queues_size * adev->gfx.num_compute_rings + kiq->pmf->set_resources_size); if (r) { DRM_ERROR("Failed to lock KIQ (%d).\n", r); return r; } kiq->pmf->kiq_set_resources(kiq_ring, queue_mask); for (i = 0; i < adev->gfx.num_compute_rings; i++) kiq->pmf->kiq_map_queues(kiq_ring, &adev->gfx.compute_ring[i]); r = amdgpu_ring_test_helper(kiq_ring); if (r) DRM_ERROR("KCQ enable failed\n"); return r; } /* amdgpu_gfx_off_ctrl - Handle gfx off feature enable/disable * * @adev: amdgpu_device pointer * @bool enable true: enable gfx off feature, false: disable gfx off feature * * 1. gfx off feature will be enabled by gfx ip after gfx cg gp enabled. * 2. other client can send request to disable gfx off feature, the request should be honored. * 3. other client can cancel their request of disable gfx off feature * 4. other client should not send request to enable gfx off feature before disable gfx off feature. */ void amdgpu_gfx_off_ctrl(struct amdgpu_device *adev, bool enable) { if (!(adev->pm.pp_feature & PP_GFXOFF_MASK)) return; if (!is_support_sw_smu(adev) && (!adev->powerplay.pp_funcs || !adev->powerplay.pp_funcs->set_powergating_by_smu)) return; mutex_lock(&adev->gfx.gfx_off_mutex); if (!enable) adev->gfx.gfx_off_req_count++; else if (adev->gfx.gfx_off_req_count > 0) adev->gfx.gfx_off_req_count--; if (enable && !adev->gfx.gfx_off_state && !adev->gfx.gfx_off_req_count) { schedule_delayed_work(&adev->gfx.gfx_off_delay_work, GFX_OFF_DELAY_ENABLE); } else if (!enable && adev->gfx.gfx_off_state) { if (!amdgpu_dpm_set_powergating_by_smu(adev, AMD_IP_BLOCK_TYPE_GFX, false)) adev->gfx.gfx_off_state = false; } mutex_unlock(&adev->gfx.gfx_off_mutex); } int amdgpu_gfx_ras_late_init(struct amdgpu_device *adev) { int r; struct ras_fs_if fs_info = { .sysfs_name = "gfx_err_count", .debugfs_name = "gfx_err_inject", }; struct ras_ih_if ih_info = { .cb = amdgpu_gfx_process_ras_data_cb, }; if (!adev->gfx.ras_if) { adev->gfx.ras_if = kmalloc(sizeof(struct ras_common_if), GFP_KERNEL); if (!adev->gfx.ras_if) return -ENOMEM; adev->gfx.ras_if->block = AMDGPU_RAS_BLOCK__GFX; adev->gfx.ras_if->type = AMDGPU_RAS_ERROR__MULTI_UNCORRECTABLE; adev->gfx.ras_if->sub_block_index = 0; strcpy(adev->gfx.ras_if->name, "gfx"); } fs_info.head = ih_info.head = *adev->gfx.ras_if; r = amdgpu_ras_late_init(adev, adev->gfx.ras_if, &fs_info, &ih_info); if (r) goto free; if (amdgpu_ras_is_supported(adev, adev->gfx.ras_if->block)) { r = amdgpu_irq_get(adev, &adev->gfx.cp_ecc_error_irq, 0); if (r) goto late_fini; } else { /* free gfx ras_if if ras is not supported */ r = 0; goto free; } return 0; late_fini: amdgpu_ras_late_fini(adev, adev->gfx.ras_if, &ih_info); free: kfree(adev->gfx.ras_if); adev->gfx.ras_if = NULL; return r; } void amdgpu_gfx_ras_fini(struct amdgpu_device *adev) { if (amdgpu_ras_is_supported(adev, AMDGPU_RAS_BLOCK__GFX) && adev->gfx.ras_if) { struct ras_common_if *ras_if = adev->gfx.ras_if; struct ras_ih_if ih_info = { .head = *ras_if, .cb = amdgpu_gfx_process_ras_data_cb, }; amdgpu_ras_late_fini(adev, ras_if, &ih_info); kfree(ras_if); } } int amdgpu_gfx_process_ras_data_cb(struct amdgpu_device *adev, void *err_data, struct amdgpu_iv_entry *entry) { /* TODO ue will trigger an interrupt. * * When “Full RAS” is enabled, the per-IP interrupt sources should * be disabled and the driver should only look for the aggregated * interrupt via sync flood */ if (!amdgpu_ras_is_supported(adev, AMDGPU_RAS_BLOCK__GFX)) { kgd2kfd_set_sram_ecc_flag(adev->kfd.dev); if (adev->gfx.funcs->query_ras_error_count) adev->gfx.funcs->query_ras_error_count(adev, err_data); amdgpu_ras_reset_gpu(adev, 0); } return AMDGPU_RAS_SUCCESS; } int amdgpu_gfx_cp_ecc_error_irq(struct amdgpu_device *adev, struct amdgpu_irq_src *source, struct amdgpu_iv_entry *entry) { struct ras_common_if *ras_if = adev->gfx.ras_if; struct ras_dispatch_if ih_data = { .entry = entry, }; if (!ras_if) return 0; ih_data.head = *ras_if; DRM_ERROR("CP ECC ERROR IRQ\n"); amdgpu_ras_interrupt_dispatch(adev, &ih_data); return 0; }