1 files changed, 272 insertions, 121 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 590588a82471..c75badfa5c4c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -59,6 +59,8 @@
 #include "amdgpu_amdkfd.h"
 #include "amdgpu_pm.h"
 
+#include "amdgpu_xgmi.h"
+
 MODULE_FIRMWARE("amdgpu/vega10_gpu_info.bin");
 MODULE_FIRMWARE("amdgpu/vega12_gpu_info.bin");
 MODULE_FIRMWARE("amdgpu/raven_gpu_info.bin");
@@ -513,6 +515,8 @@ void amdgpu_device_pci_config_reset(struct amdgpu_device *adev)
  */
 static int amdgpu_device_doorbell_init(struct amdgpu_device *adev)
 {
+	amdgpu_asic_init_doorbell_index(adev);
+
 	/* No doorbell on SI hardware generation */
 	if (adev->asic_type < CHIP_BONAIRE) {
 		adev->doorbell.base = 0;
@@ -530,10 +534,19 @@ static int amdgpu_device_doorbell_init(struct amdgpu_device *adev)
 	adev->doorbell.size = pci_resource_len(adev->pdev, 2);
 
 	adev->doorbell.num_doorbells = min_t(u32, adev->doorbell.size / sizeof(u32),
-					     AMDGPU_DOORBELL_MAX_ASSIGNMENT+1);
+					     adev->doorbell_index.max_assignment+1);
 	if (adev->doorbell.num_doorbells == 0)
 		return -EINVAL;
 
+	/* For Vega, reserve and map two pages on doorbell BAR since SDMA
+	 * paging queue doorbell use the second page. The
+	 * AMDGPU_DOORBELL64_MAX_ASSIGNMENT definition assumes all the
+	 * doorbells are in the first page. So with paging queue enabled,
+	 * the max num_doorbells should + 1 page (0x400 in dword)
+	 */
+	if (adev->asic_type >= CHIP_VEGA10)
+		adev->doorbell.num_doorbells += 0x400;
+
 	adev->doorbell.ptr = ioremap(adev->doorbell.base,
 				     adev->doorbell.num_doorbells *
 				     sizeof(u32));
@@ -2458,9 +2471,6 @@ int amdgpu_device_init(struct amdgpu_device *adev,
 	DRM_INFO("register mmio base: 0x%08X\n", (uint32_t)adev->rmmio_base);
 	DRM_INFO("register mmio size: %u\n", (unsigned)adev->rmmio_size);
 
-	/* doorbell bar mapping */
-	amdgpu_device_doorbell_init(adev);
-
 	/* io port mapping */
 	for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
 		if (pci_resource_flags(adev->pdev, i) & IORESOURCE_IO) {
@@ -2479,6 +2489,9 @@ int amdgpu_device_init(struct amdgpu_device *adev,
 	if (r)
 		return r;
 
+	/* doorbell bar mapping and doorbell index init*/
+	amdgpu_device_doorbell_init(adev);
+
 	/* if we have > 1 VGA cards, then disable the amdgpu VGA resources */
 	/* this will fail for cards that aren't VGA class devices, just
 	 * ignore it */
@@ -3151,86 +3164,6 @@ static int amdgpu_device_recover_vram(struct amdgpu_device *adev)
 	return 0;
 }
 
-/**
- * amdgpu_device_reset - reset ASIC/GPU for bare-metal or passthrough
- *
- * @adev: amdgpu device pointer
- *
- * attempt to do soft-reset or full-reset and reinitialize Asic
- * return 0 means succeeded otherwise failed
- */
-static int amdgpu_device_reset(struct amdgpu_device *adev)
-{
-	bool need_full_reset, vram_lost = 0;
-	int r;
-
-	need_full_reset = amdgpu_device_ip_need_full_reset(adev);
-
-	if (!need_full_reset) {
-		amdgpu_device_ip_pre_soft_reset(adev);
-		r = amdgpu_device_ip_soft_reset(adev);
-		amdgpu_device_ip_post_soft_reset(adev);
-		if (r || amdgpu_device_ip_check_soft_reset(adev)) {
-			DRM_INFO("soft reset failed, will fallback to full reset!\n");
-			need_full_reset = true;
-		}
-	}
-
-	if (need_full_reset) {
-		r = amdgpu_device_ip_suspend(adev);
-
-retry:
-		r = amdgpu_asic_reset(adev);
-		/* post card */
-		amdgpu_atom_asic_init(adev->mode_info.atom_context);
-
-		if (!r) {
-			dev_info(adev->dev, "GPU reset succeeded, trying to resume\n");
-			r = amdgpu_device_ip_resume_phase1(adev);
-			if (r)
-				goto out;
-
-			vram_lost = amdgpu_device_check_vram_lost(adev);
-			if (vram_lost) {
-				DRM_ERROR("VRAM is lost!\n");
-				atomic_inc(&adev->vram_lost_counter);
-			}
-
-			r = amdgpu_gtt_mgr_recover(
-				&adev->mman.bdev.man[TTM_PL_TT]);
-			if (r)
-				goto out;
-
-			r = amdgpu_device_fw_loading(adev);
-			if (r)
-				return r;
-
-			r = amdgpu_device_ip_resume_phase2(adev);
-			if (r)
-				goto out;
-
-			if (vram_lost)
-				amdgpu_device_fill_reset_magic(adev);
-		}
-	}
-
-out:
-	if (!r) {
-		amdgpu_irq_gpu_reset_resume_helper(adev);
-		r = amdgpu_ib_ring_tests(adev);
-		if (r) {
-			dev_err(adev->dev, "ib ring test failed (%d).\n", r);
-			r = amdgpu_device_ip_suspend(adev);
-			need_full_reset = true;
-			goto retry;
-		}
-	}
-
-	if (!r)
-		r = amdgpu_device_recover_vram(adev);
-
-	return r;
-}
 
 /**
  * amdgpu_device_reset_sriov - reset ASIC for SR-IOV vf
@@ -3329,31 +3262,13 @@ disabled:
 		return false;
 }
 
-/**
- * amdgpu_device_gpu_recover - reset the asic and recover scheduler
- *
- * @adev: amdgpu device pointer
- * @job: which job trigger hang
- *
- * Attempt to reset the GPU if it has hung (all asics).
- * Returns 0 for success or an error on failure.
- */
-int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
-			      struct amdgpu_job *job)
-{
-	int i, r, resched;
 
-	dev_info(adev->dev, "GPU reset begin!\n");
-
-	mutex_lock(&adev->lock_reset);
-	atomic_inc(&adev->gpu_reset_counter);
-	adev->in_gpu_reset = 1;
-
-	/* Block kfd */
-	amdgpu_amdkfd_pre_reset(adev);
-
-	/* block TTM */
-	resched = ttm_bo_lock_delayed_workqueue(&adev->mman.bdev);
+static int amdgpu_device_pre_asic_reset(struct amdgpu_device *adev,
+					struct amdgpu_job *job,
+					bool *need_full_reset_arg)
+{
+	int i, r = 0;
+	bool need_full_reset  = *need_full_reset_arg;
 
 	/* block all schedulers and reset given job's ring */
 	for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
@@ -3373,10 +3288,123 @@ int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
 		amdgpu_fence_driver_force_completion(ring);
 	}
 
-	if (amdgpu_sriov_vf(adev))
-		r = amdgpu_device_reset_sriov(adev, job ? false : true);
-	else
-		r = amdgpu_device_reset(adev);
+
+
+	if (!amdgpu_sriov_vf(adev)) {
+
+		if (!need_full_reset)
+			need_full_reset = amdgpu_device_ip_need_full_reset(adev);
+
+		if (!need_full_reset) {
+			amdgpu_device_ip_pre_soft_reset(adev);
+			r = amdgpu_device_ip_soft_reset(adev);
+			amdgpu_device_ip_post_soft_reset(adev);
+			if (r || amdgpu_device_ip_check_soft_reset(adev)) {
+				DRM_INFO("soft reset failed, will fallback to full reset!\n");
+				need_full_reset = true;
+			}
+		}
+
+		if (need_full_reset)
+			r = amdgpu_device_ip_suspend(adev);
+
+		*need_full_reset_arg = need_full_reset;
+	}
+
+	return r;
+}
+
+static int amdgpu_do_asic_reset(struct amdgpu_hive_info *hive,
+			       struct list_head *device_list_handle,
+			       bool *need_full_reset_arg)
+{
+	struct amdgpu_device *tmp_adev = NULL;
+	bool need_full_reset = *need_full_reset_arg, vram_lost = false;
+	int r = 0;
+
+	/*
+	 * ASIC reset has to be done on all HGMI hive nodes ASAP
+	 * to allow proper links negotiation in FW (within 1 sec)
+	 */
+	if (need_full_reset) {
+		list_for_each_entry(tmp_adev, device_list_handle, gmc.xgmi.head) {
+			r = amdgpu_asic_reset(tmp_adev);
+			if (r)
+				DRM_WARN("ASIC reset failed with err r, %d for drm dev, %s",
+					 r, tmp_adev->ddev->unique);
+		}
+	}
+
+
+	list_for_each_entry(tmp_adev, device_list_handle, gmc.xgmi.head) {
+		if (need_full_reset) {
+			/* post card */
+			if (amdgpu_atom_asic_init(tmp_adev->mode_info.atom_context))
+				DRM_WARN("asic atom init failed!");
+
+			if (!r) {
+				dev_info(tmp_adev->dev, "GPU reset succeeded, trying to resume\n");
+				r = amdgpu_device_ip_resume_phase1(tmp_adev);
+				if (r)
+					goto out;
+
+				vram_lost = amdgpu_device_check_vram_lost(tmp_adev);
+				if (vram_lost) {
+					DRM_ERROR("VRAM is lost!\n");
+					atomic_inc(&tmp_adev->vram_lost_counter);
+				}
+
+				r = amdgpu_gtt_mgr_recover(
+					&tmp_adev->mman.bdev.man[TTM_PL_TT]);
+				if (r)
+					goto out;
+
+				r = amdgpu_device_fw_loading(tmp_adev);
+				if (r)
+					return r;
+
+				r = amdgpu_device_ip_resume_phase2(tmp_adev);
+				if (r)
+					goto out;
+
+				if (vram_lost)
+					amdgpu_device_fill_reset_magic(tmp_adev);
+
+				/* Update PSP FW topology after reset */
+				if (hive && tmp_adev->gmc.xgmi.num_physical_nodes > 1)
+					r = amdgpu_xgmi_update_topology(hive, tmp_adev);
+			}
+		}
+
+
+out:
+		if (!r) {
+			amdgpu_irq_gpu_reset_resume_helper(tmp_adev);
+			r = amdgpu_ib_ring_tests(tmp_adev);
+			if (r) {
+				dev_err(tmp_adev->dev, "ib ring test failed (%d).\n", r);
+				r = amdgpu_device_ip_suspend(tmp_adev);
+				need_full_reset = true;
+				r = -EAGAIN;
+				goto end;
+			}
+		}
+
+		if (!r)
+			r = amdgpu_device_recover_vram(tmp_adev);
+		else
+			tmp_adev->asic_reset_res = r;
+	}
+
+end:
+	*need_full_reset_arg = need_full_reset;
+	return r;
+}
+
+static void amdgpu_device_post_asic_reset(struct amdgpu_device *adev,
+					  struct amdgpu_job *job)
+{
+	int i;
 
 	for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
 		struct amdgpu_ring *ring = adev->rings[i];
@@ -3388,7 +3416,7 @@ int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
 		 * or all rings (in the case @job is NULL)
 		 * after above amdgpu_reset accomplished
 		 */
-		if ((!job || job->base.sched == &ring->sched) && !r)
+		if ((!job || job->base.sched == &ring->sched) && !adev->asic_reset_res)
 			drm_sched_job_recovery(&ring->sched);
 
 		kthread_unpark(ring->sched.thread);
@@ -3398,21 +3426,144 @@ int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
 		drm_helper_resume_force_mode(adev->ddev);
 	}
 
-	ttm_bo_unlock_delayed_workqueue(&adev->mman.bdev, resched);
+	adev->asic_reset_res = 0;
+}
 
-	if (r) {
-		/* bad news, how to tell it to userspace ? */
-		dev_info(adev->dev, "GPU reset(%d) failed\n", atomic_read(&adev->gpu_reset_counter));
-		amdgpu_vf_error_put(adev, AMDGIM_ERROR_VF_GPU_RESET_FAIL, 0, r);
-	} else {
-		dev_info(adev->dev, "GPU reset(%d) succeeded!\n",atomic_read(&adev->gpu_reset_counter));
-	}
+static void amdgpu_device_lock_adev(struct amdgpu_device *adev)
+{
+	mutex_lock(&adev->lock_reset);
+	atomic_inc(&adev->gpu_reset_counter);
+	adev->in_gpu_reset = 1;
+	/* Block kfd */
+	amdgpu_amdkfd_pre_reset(adev);
+}
 
+static void amdgpu_device_unlock_adev(struct amdgpu_device *adev)
+{
 	/*unlock kfd */
 	amdgpu_amdkfd_post_reset(adev);
 	amdgpu_vf_error_trans_all(adev);
 	adev->in_gpu_reset = 0;
 	mutex_unlock(&adev->lock_reset);
+}
+
+
+/**
+ * amdgpu_device_gpu_recover - reset the asic and recover scheduler
+ *
+ * @adev: amdgpu device pointer
+ * @job: which job trigger hang
+ *
+ * Attempt to reset the GPU if it has hung (all asics).
+ * Attempt to do soft-reset or full-reset and reinitialize Asic
+ * Returns 0 for success or an error on failure.
+ */
+
+int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
+			      struct amdgpu_job *job)
+{
+	int r;
+	struct amdgpu_hive_info *hive = NULL;
+	bool need_full_reset = false;
+	struct amdgpu_device *tmp_adev = NULL;
+	struct list_head device_list, *device_list_handle =  NULL;
+
+	INIT_LIST_HEAD(&device_list);
+
+	dev_info(adev->dev, "GPU reset begin!\n");
+
+	/*
+	 * In case of XGMI hive disallow concurrent resets to be triggered
+	 * by different nodes. No point also since the one node already executing
+	 * reset will also reset all the other nodes in the hive.
+	 */
+	hive = amdgpu_get_xgmi_hive(adev);
+	if (hive && adev->gmc.xgmi.num_physical_nodes > 1 &&
+	    !mutex_trylock(&hive->hive_lock))
+		return 0;
+
+	/* Start with adev pre asic reset first for soft reset check.*/
+	amdgpu_device_lock_adev(adev);
+	r = amdgpu_device_pre_asic_reset(adev,
+					 job,
+					 &need_full_reset);
+	if (r) {
+		/*TODO Should we stop ?*/
+		DRM_ERROR("GPU pre asic reset failed with err, %d for drm dev, %s ",
+			  r, adev->ddev->unique);
+		adev->asic_reset_res = r;
+	}
+
+	/* Build list of devices to reset */
+	if  (need_full_reset && adev->gmc.xgmi.num_physical_nodes > 1) {
+		if (!hive) {
+			amdgpu_device_unlock_adev(adev);
+			return -ENODEV;
+		}
+
+		/*
+		 * In case we are in XGMI hive mode device reset is done for all the
+		 * nodes in the hive to retrain all XGMI links and hence the reset
+		 * sequence is executed in loop on all nodes.
+		 */
+		device_list_handle = &hive->device_list;
+	} else {
+		list_add_tail(&adev->gmc.xgmi.head, &device_list);
+		device_list_handle = &device_list;
+	}
+
+retry:	/* Rest of adevs pre asic reset from XGMI hive. */
+	list_for_each_entry(tmp_adev, device_list_handle, gmc.xgmi.head) {
+
+		if (tmp_adev == adev)
+			continue;
+
+		dev_info(tmp_adev->dev, "GPU reset begin for drm dev %s!\n", adev->ddev->unique);
+
+		amdgpu_device_lock_adev(tmp_adev);
+		r = amdgpu_device_pre_asic_reset(tmp_adev,
+						 NULL,
+						 &need_full_reset);
+		/*TODO Should we stop ?*/
+		if (r) {
+			DRM_ERROR("GPU pre asic reset failed with err, %d for drm dev, %s ",
+				  r, tmp_adev->ddev->unique);
+			tmp_adev->asic_reset_res = r;
+		}
+	}
+
+	/* Actual ASIC resets if needed.*/
+	/* TODO Implement XGMI hive reset logic for SRIOV */
+	if (amdgpu_sriov_vf(adev)) {
+		r = amdgpu_device_reset_sriov(adev, job ? false : true);
+		if (r)
+			adev->asic_reset_res = r;
+	} else {
+		r  = amdgpu_do_asic_reset(hive, device_list_handle, &need_full_reset);
+		if (r && r == -EAGAIN)
+			goto retry;
+	}
+
+	/* Post ASIC reset for all devs .*/
+	list_for_each_entry(tmp_adev, device_list_handle, gmc.xgmi.head) {
+		amdgpu_device_post_asic_reset(tmp_adev, tmp_adev == adev ? job : NULL);
+
+		if (r) {
+			/* bad news, how to tell it to userspace ? */
+			dev_info(tmp_adev->dev, "GPU reset(%d) failed\n", atomic_read(&adev->gpu_reset_counter));
+			amdgpu_vf_error_put(tmp_adev, AMDGIM_ERROR_VF_GPU_RESET_FAIL, 0, r);
+		} else {
+			dev_info(tmp_adev->dev, "GPU reset(%d) succeeded!\n", atomic_read(&adev->gpu_reset_counter));
+		}
+
+		amdgpu_device_unlock_adev(tmp_adev);
+	}
+
+	if (hive && adev->gmc.xgmi.num_physical_nodes > 1)
+		mutex_unlock(&hive->hive_lock);
+
+	if (r)
+		dev_info(adev->dev, "GPU reset end with ret = %d\n", r);
 	return r;
 }