Merge tag 'drm-next-2018-12-14' of git://anongit.freedesktop.org/drm/drm

Pull drm updates from Dave Airlie:
 "Core:
   - shared fencing staging removal
   - drop transactional atomic helpers and move helpers to new location
   - DP/MST atomic cleanup
   - Leasing cleanups and drop EXPORT_SYMBOL
   - Convert drivers to atomic helpers and generic fbdev.
   - removed deprecated obj_ref/unref in favour of get/put
   - Improve dumb callback documentation
   - MODESET_LOCK_BEGIN/END helpers

  panels:
   - CDTech panels, Banana Pi Panel, DLC1010GIG,
   - Olimex LCD-O-LinuXino, Samsung S6D16D0, Truly NT35597 WQXGA,
   - Himax HX8357D, simulated RTSM AEMv8.
   - GPD Win2 panel
   - AUO G101EVN010

  vgem:
   - render node support

  ttm:
   - move global init out of drivers
   - fix LRU handling for ghost objects
   - Support for simultaneous submissions to multiple engines

  scheduler:
   - timeout/fault handling changes to help GPU recovery
   - helpers for hw with preemption support

  i915:
   - Scaler/Watermark fixes
   - DP MST + powerwell fixes
   - PSR fixes
   - Break long get/put shmemfs pages
   - Icelake fixes
   - Icelake DSI video mode enablement
   - Engine workaround improvements

  amdgpu:
   - freesync support
   - GPU reset enabled on CI, VI, SOC15 dGPUs
   - ABM support in DC
   - KFD support for vega12/polaris12
   - SDMA paging queue on vega
   - More amdkfd code sharing
   - DCC scanout on GFX9
   - DC kerneldoc
   - Updated SMU firmware for GFX8 chips
   - XGMI PSP + hive reset support
   - GPU reset
   - DC trace support
   - Powerplay updates for newer Polaris
   - Cursor plane update fast path
   - kfd dma-buf support

  virtio-gpu:
   - add EDID support

  vmwgfx:
   - pageflip with damage support

  nouveau:
   - Initial Turing TU104/TU106 modesetting support

  msm:
   - a2xx gpu support for apq8060 and imx5
   - a2xx gpummu support
   - mdp4 display support for apq8060
   - DPU fixes and cleanups
   - enhanced profiling support
   - debug object naming interface
   - get_iova/page pinning decoupling

  tegra:
   - Tegra194 host1x, VIC and display support enabled
   - Audio over HDMI for Tegra186 and Tegra194

  exynos:
   - DMA/IOMMU refactoring
   - plane alpha + blend mode support
   - Color format fixes for mixer driver

  rcar-du:
   - R8A7744 and R8A77470 support
   - R8A77965 LVDS support

  imx:
   - fbdev emulation fix
   - multi-tiled scalling fixes
   - SPDX identifiers

  rockchip
   - dw_hdmi support
   - dw-mipi-dsi + dual dsi support
   - mailbox read size fix

  qxl:
   - fix cursor pinning

  vc4:
   - YUV support (scaling + cursor)

  v3d:
   - enable TFU (Texture Formatting Unit)

  mali-dp:
   - add support for linear tiled formats

  sun4i:
   - Display Engine 3 support
   - H6 DE3 mixer 0 support
   - H6 display engine support
   - dw-hdmi support
   - H6 HDMI phy support
   - implicit fence waiting
   - BGRX8888 support

  meson:
   - Overlay plane support
   - implicit fence waiting
   - HDMI 1.4 4k modes

  bridge:
   - i2c fixes for sii902x"

* tag 'drm-next-2018-12-14' of git://anongit.freedesktop.org/drm/drm: (1403 commits)
  drm/amd/display: Add fast path for cursor plane updates
  drm/amdgpu: Enable GPU recovery by default for CI
  drm/amd/display: Fix duplicating scaling/underscan connector state
  drm/amd/display: Fix unintialized max_bpc state values
  Revert "drm/amd/display: Set RMX_ASPECT as default"
  drm/amdgpu: Fix stub function name
  drm/msm/dpu: Fix clock issue after bind failure
  drm/msm/dpu: Clean up dpu_media_info.h static inline functions
  drm/msm/dpu: Further cleanups for static inline functions
  drm/msm/dpu: Cleanup the debugfs functions
  drm/msm/dpu: Remove dpu_irq and unused functions
  drm/msm: Make irq_postinstall optional
  drm/msm/dpu: Cleanup callers of dpu_hw_blk_init
  drm/msm/dpu: Remove unused functions
  drm/msm/dpu: Remove dpu_crtc_is_enabled()
  drm/msm/dpu: Remove dpu_crtc_get_mixer_height
  drm/msm/dpu: Remove dpu_dbg
  drm/msm: dpu: Remove crtc_lock
  drm/msm: dpu: Remove vblank_requested flag from dpu_crtc
  drm/msm: dpu: Separate crtc assignment from vblank enable
  ...

1 files changed, 344 insertions, 128 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 30bc345d6fdf..b60afeade50a 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 +515,7 @@ void amdgpu_device_pci_config_reset(struct amdgpu_device *adev)
  */
 static int amdgpu_device_doorbell_init(struct amdgpu_device *adev)
 {
+
 	/* No doorbell on SI hardware generation */
 	if (adev->asic_type < CHIP_BONAIRE) {
 		adev->doorbell.base = 0;
@@ -525,15 +528,26 @@ static int amdgpu_device_doorbell_init(struct amdgpu_device *adev)
 	if (pci_resource_flags(adev->pdev, 2) & IORESOURCE_UNSET)
 		return -EINVAL;
 
+	amdgpu_asic_init_doorbell_index(adev);
+
 	/* doorbell bar mapping */
 	adev->doorbell.base = pci_resource_start(adev->pdev, 2);
 	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));
@@ -1656,7 +1670,9 @@ static int amdgpu_device_ip_init(struct amdgpu_device *adev)
 
 			/* right after GMC hw init, we create CSA */
 			if (amdgpu_sriov_vf(adev)) {
-				r = amdgpu_allocate_static_csa(adev);
+				r = amdgpu_allocate_static_csa(adev, &adev->virt.csa_obj,
+								AMDGPU_GEM_DOMAIN_VRAM,
+								AMDGPU_CSA_SIZE);
 				if (r) {
 					DRM_ERROR("allocate CSA failed %d\n", r);
 					return r;
@@ -1681,7 +1697,8 @@ static int amdgpu_device_ip_init(struct amdgpu_device *adev)
 	if (r)
 		return r;
 
-	amdgpu_xgmi_add_device(adev);
+	if (adev->gmc.xgmi.num_physical_nodes > 1)
+		amdgpu_xgmi_add_device(adev);
 	amdgpu_amdkfd_device_init(adev);
 
 	if (amdgpu_sriov_vf(adev))
@@ -1848,6 +1865,9 @@ static int amdgpu_device_ip_fini(struct amdgpu_device *adev)
 {
 	int i, r;
 
+	if (adev->gmc.xgmi.num_physical_nodes > 1)
+		amdgpu_xgmi_remove_device(adev);
+
 	amdgpu_amdkfd_device_fini(adev);
 
 	amdgpu_device_set_pg_state(adev, AMD_PG_STATE_UNGATE);
@@ -1890,7 +1910,7 @@ static int amdgpu_device_ip_fini(struct amdgpu_device *adev)
 
 		if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_GMC) {
 			amdgpu_ucode_free_bo(adev);
-			amdgpu_free_static_csa(adev);
+			amdgpu_free_static_csa(&adev->virt.csa_obj);
 			amdgpu_device_wb_fini(adev);
 			amdgpu_device_vram_scratch_fini(adev);
 		}
@@ -2337,6 +2357,19 @@ bool amdgpu_device_has_dc_support(struct amdgpu_device *adev)
 	return amdgpu_device_asic_has_dc_support(adev->asic_type);
 }
 
+
+static void amdgpu_device_xgmi_reset_func(struct work_struct *__work)
+{
+	struct amdgpu_device *adev =
+		container_of(__work, struct amdgpu_device, xgmi_reset_work);
+
+	adev->asic_reset_res =  amdgpu_asic_reset(adev);
+	if (adev->asic_reset_res)
+		DRM_WARN("ASIC reset failed with err r, %d for drm dev, %s",
+			 adev->asic_reset_res, adev->ddev->unique);
+}
+
+
 /**
  * amdgpu_device_init - initialize the driver
  *
@@ -2435,6 +2468,8 @@ int amdgpu_device_init(struct amdgpu_device *adev,
 	INIT_DELAYED_WORK(&adev->gfx.gfx_off_delay_work,
 			  amdgpu_device_delay_enable_gfx_off);
 
+	INIT_WORK(&adev->xgmi_reset_work, amdgpu_device_xgmi_reset_func);
+
 	adev->gfx.gfx_off_req_count = 1;
 	adev->pm.ac_power = power_supply_is_system_supplied() > 0 ? true : false;
 
@@ -2455,9 +2490,6 @@ 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) {
@@ -2476,6 +2508,9 @@ 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 */
@@ -3148,86 +3183,6 @@ 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
@@ -3295,40 +3250,46 @@ bool amdgpu_device_should_recover_gpu(struct amdgpu_device *adev)
 		return false;
 	}
 
-	if (amdgpu_gpu_recovery == 0 || (amdgpu_gpu_recovery == -1  &&
-					 !amdgpu_sriov_vf(adev))) {
-		DRM_INFO("GPU recovery disabled.\n");
-		return false;
-	}
+	if (amdgpu_gpu_recovery == 0)
+		goto disabled;
 
-	return true;
-}
+	if (amdgpu_sriov_vf(adev))
+		return true;
 
-/**
- * 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;
+	if (amdgpu_gpu_recovery == -1) {
+		switch (adev->asic_type) {
+		case CHIP_BONAIRE:
+		case CHIP_HAWAII:
+		case CHIP_TOPAZ:
+		case CHIP_TONGA:
+		case CHIP_FIJI:
+		case CHIP_POLARIS10:
+		case CHIP_POLARIS11:
+		case CHIP_POLARIS12:
+		case CHIP_VEGAM:
+		case CHIP_VEGA20:
+		case CHIP_VEGA10:
+		case CHIP_VEGA12:
+			break;
+		default:
+			goto disabled;
+		}
+	}
 
-	dev_info(adev->dev, "GPU reset begin!\n");
+	return true;
 
-	mutex_lock(&adev->lock_reset);
-	atomic_inc(&adev->gpu_reset_counter);
-	adev->in_gpu_reset = 1;
+disabled:
+		DRM_INFO("GPU recovery disabled.\n");
+		return false;
+}
 
-	/* 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) {
@@ -3348,10 +3309,144 @@ 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) {
+			/* For XGMI run all resets in parallel to speed up the process */
+			if (tmp_adev->gmc.xgmi.num_physical_nodes > 1) {
+				if (!queue_work(system_highpri_wq, &tmp_adev->xgmi_reset_work))
+					r = -EALREADY;
+			} else
+				r = amdgpu_asic_reset(tmp_adev);
+
+			if (r) {
+				DRM_ERROR("ASIC reset failed with err r, %d for drm dev, %s",
+					 r, tmp_adev->ddev->unique);
+				break;
+			}
+		}
+
+		/* For XGMI wait for all PSP resets to complete before proceed */
+		if (!r) {
+			list_for_each_entry(tmp_adev, device_list_handle,
+					    gmc.xgmi.head) {
+				if (tmp_adev->gmc.xgmi.num_physical_nodes > 1) {
+					flush_work(&tmp_adev->xgmi_reset_work);
+					r = tmp_adev->asic_reset_res;
+					if (r)
+						break;
+				}
+			}
+		}
+	}
+
+
+	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];
@@ -3363,7 +3458,7 @@ 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);
@@ -3373,21 +3468,142 @@ 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;
+
+		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;
 }