[PATCH v2 06/10] drm/amdgpu: Refactor XGMI reset on init handling

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Use XGMI hive information to rely on resetting XGMI devices on
initialization rather than using mgpu structure. mgpu structure may have
other devices as well.

Signed-off-by: Lijo Lazar <lijo.lazar@xxxxxxx>
Reviewed-by: Feifei Xu <feifxu@xxxxxxx>
---
v2:
	Use consistent naming scheme for functions/variables (Alex Deucher)
	Use renamed init level id - AMDGPU_INIT_LEVEL_MINIMAL_XGMI

 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 10 +--
 drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c    |  6 --
 drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c   | 73 ++++++++++++++++++++--
 drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.h   |  2 +
 drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c      | 14 +++--
 drivers/gpu/drm/amd/amdgpu/soc15.c         |  5 ++
 6 files changed, 91 insertions(+), 19 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 4928881c13b2..c104076e85b6 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -164,7 +164,8 @@ struct amdgpu_init_level amdgpu_init_minimal_xgmi = {
 	.level = AMDGPU_INIT_LEVEL_MINIMAL_XGMI,
 	.hwini_ip_block_mask =
 		BIT(AMD_IP_BLOCK_TYPE_GMC) | BIT(AMD_IP_BLOCK_TYPE_SMC) |
-		BIT(AMD_IP_BLOCK_TYPE_COMMON) | BIT(AMD_IP_BLOCK_TYPE_IH)
+		BIT(AMD_IP_BLOCK_TYPE_COMMON) | BIT(AMD_IP_BLOCK_TYPE_IH) |
+		BIT(AMD_IP_BLOCK_TYPE_PSP)
 };
 
 static inline bool amdgpu_ip_member_of_hwini(struct amdgpu_device *adev,
@@ -2840,6 +2841,7 @@ static int amdgpu_device_init_schedulers(struct amdgpu_device *adev)
  */
 static int amdgpu_device_ip_init(struct amdgpu_device *adev)
 {
+	bool init_badpage;
 	int i, r;
 
 	r = amdgpu_ras_init(adev);
@@ -2953,7 +2955,8 @@ static int amdgpu_device_ip_init(struct amdgpu_device *adev)
 	 * Note: theoretically, this should be called before all vram allocations
 	 * to protect retired page from abusing
 	 */
-	r = amdgpu_ras_recovery_init(adev, true);
+	init_badpage = (adev->init_lvl->level != AMDGPU_INIT_LEVEL_MINIMAL_XGMI);
+	r = amdgpu_ras_recovery_init(adev, init_badpage);
 	if (r)
 		goto init_failed;
 
@@ -4514,8 +4517,7 @@ int amdgpu_device_init(struct amdgpu_device *adev,
 		vga_switcheroo_init_domain_pm_ops(adev->dev, &adev->vga_pm_domain);
 
 	if (adev->init_lvl->level == AMDGPU_INIT_LEVEL_MINIMAL_XGMI)
-		queue_delayed_work(system_wq, &mgpu_info.delayed_reset_work,
-				   msecs_to_jiffies(AMDGPU_RESUME_MS));
+		amdgpu_xgmi_reset_on_init(adev);
 
 	amdgpu_device_check_iommu_direct_map(adev);
 
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
index f5cd91fd63ea..2c29f4c34e64 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
@@ -3216,12 +3216,6 @@ int amdgpu_ras_recovery_init(struct amdgpu_device *adev, bool init_bp_info)
 	max_eeprom_records_count = amdgpu_ras_eeprom_max_record_count(&con->eeprom_control);
 	amdgpu_ras_validate_threshold(adev, max_eeprom_records_count);
 
-	/* Todo: During test the SMU might fail to read the eeprom through I2C
-	 * when the GPU is pending on XGMI reset during probe time
-	 * (Mostly after second bus reset), skip it now
-	 */
-	if (adev->init_lvl->level == AMDGPU_INIT_LEVEL_MINIMAL_XGMI)
-		return 0;
 	if (init_bp_info) {
 		ret = amdgpu_ras_init_badpage_info(adev);
 		if (ret)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
index 74135d611cba..61b293c60b41 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
@@ -860,8 +860,7 @@ int amdgpu_xgmi_add_device(struct amdgpu_device *adev)
 	if (!adev->gmc.xgmi.supported)
 		return 0;
 
-	if ((adev->init_lvl->level != AMDGPU_INIT_LEVEL_MINIMAL_XGMI) &&
-	    amdgpu_device_ip_get_ip_block(adev, AMD_IP_BLOCK_TYPE_PSP)) {
+	if (amdgpu_device_ip_get_ip_block(adev, AMD_IP_BLOCK_TYPE_PSP)) {
 		ret = psp_xgmi_initialize(&adev->psp, false, true);
 		if (ret) {
 			dev_err(adev->dev,
@@ -907,8 +906,7 @@ int amdgpu_xgmi_add_device(struct amdgpu_device *adev)
 
 	task_barrier_add_task(&hive->tb);
 
-	if ((adev->init_lvl->level != AMDGPU_INIT_LEVEL_MINIMAL_XGMI) &&
-	    amdgpu_device_ip_get_ip_block(adev, AMD_IP_BLOCK_TYPE_PSP)) {
+	if (amdgpu_device_ip_get_ip_block(adev, AMD_IP_BLOCK_TYPE_PSP)) {
 		list_for_each_entry(tmp_adev, &hive->device_list, gmc.xgmi.head) {
 			/* update node list for other device in the hive */
 			if (tmp_adev != adev) {
@@ -985,7 +983,7 @@ int amdgpu_xgmi_add_device(struct amdgpu_device *adev)
 		}
 	}
 
-	if (!ret && (adev->init_lvl->level != AMDGPU_INIT_LEVEL_MINIMAL_XGMI))
+	if (!ret)
 		ret = amdgpu_xgmi_sysfs_add_dev_info(adev, hive);
 
 exit_unlock:
@@ -1500,3 +1498,68 @@ int amdgpu_xgmi_ras_sw_init(struct amdgpu_device *adev)
 
 	return 0;
 }
+
+static void amdgpu_xgmi_reset_on_init_work(struct work_struct *work)
+{
+	struct amdgpu_hive_info *hive =
+		container_of(work, struct amdgpu_hive_info, reset_on_init_work);
+	struct amdgpu_reset_context reset_context;
+	struct amdgpu_device *tmp_adev;
+	struct list_head device_list;
+	int r;
+
+	mutex_lock(&hive->hive_lock);
+
+	INIT_LIST_HEAD(&device_list);
+	list_for_each_entry(tmp_adev, &hive->device_list, gmc.xgmi.head)
+		list_add_tail(&tmp_adev->reset_list, &device_list);
+
+	tmp_adev = list_first_entry(&device_list, struct amdgpu_device,
+				    reset_list);
+	amdgpu_device_lock_reset_domain(tmp_adev->reset_domain);
+
+	reset_context.method = AMD_RESET_METHOD_ON_INIT;
+	reset_context.reset_req_dev = tmp_adev;
+	reset_context.hive = hive;
+	reset_context.reset_device_list = &device_list;
+	set_bit(AMDGPU_NEED_FULL_RESET, &reset_context.flags);
+	set_bit(AMDGPU_SKIP_COREDUMP, &reset_context.flags);
+
+	amdgpu_reset_do_xgmi_reset_on_init(&reset_context);
+	mutex_unlock(&hive->hive_lock);
+	amdgpu_device_unlock_reset_domain(tmp_adev->reset_domain);
+
+	list_for_each_entry(tmp_adev, &hive->device_list, gmc.xgmi.head) {
+		r = amdgpu_ras_init_badpage_info(tmp_adev);
+		if (r && r != -EHWPOISON)
+			dev_err(tmp_adev->dev,
+				"error during bad page data initializtion");
+	}
+}
+
+static void amdgpu_xgmi_schedule_reset_on_init(struct amdgpu_hive_info *hive)
+{
+	INIT_WORK(&hive->reset_on_init_work, amdgpu_xgmi_reset_on_init_work);
+	amdgpu_reset_domain_schedule(hive->reset_domain,
+				     &hive->reset_on_init_work);
+}
+
+int amdgpu_xgmi_reset_on_init(struct amdgpu_device *adev)
+{
+	struct amdgpu_hive_info *hive;
+	int r, num_devs;
+
+	hive = amdgpu_get_xgmi_hive(adev);
+	if (!hive)
+		return -EINVAL;
+
+	mutex_lock(&hive->hive_lock);
+	num_devs = atomic_read(&hive->number_devices);
+	if (num_devs == adev->gmc.xgmi.num_physical_nodes)
+		amdgpu_xgmi_schedule_reset_on_init(hive);
+
+	mutex_unlock(&hive->hive_lock);
+	amdgpu_put_xgmi_hive(hive);
+
+	return r;
+}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.h
index a3bfc16de6d4..d652727ca565 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.h
@@ -45,6 +45,7 @@ struct amdgpu_hive_info {
 	struct amdgpu_reset_domain *reset_domain;
 	atomic_t ras_recovery;
 	struct ras_event_manager event_mgr;
+	struct work_struct reset_on_init_work;
 };
 
 struct amdgpu_pcs_ras_field {
@@ -75,5 +76,6 @@ static inline bool amdgpu_xgmi_same_hive(struct amdgpu_device *adev,
 		adev->gmc.xgmi.hive_id == bo_adev->gmc.xgmi.hive_id);
 }
 int amdgpu_xgmi_ras_sw_init(struct amdgpu_device *adev);
+int amdgpu_xgmi_reset_on_init(struct amdgpu_device *adev);
 
 #endif
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index c76ac0dfe572..cafcb24449df 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -2413,11 +2413,17 @@ static int gmc_v9_0_hw_fini(void *handle)
 	if (adev->mmhub.funcs->update_power_gating)
 		adev->mmhub.funcs->update_power_gating(adev, false);
 
-	amdgpu_irq_put(adev, &adev->gmc.vm_fault, 0);
+	/*
+	 * For minimal init, late_init is not called, hence VM fault/RAS irqs
+	 * are not enabled.
+	 */
+	if (adev->init_lvl->level != AMDGPU_INIT_LEVEL_MINIMAL_XGMI) {
+		amdgpu_irq_put(adev, &adev->gmc.vm_fault, 0);
 
-	if (adev->gmc.ecc_irq.funcs &&
-		amdgpu_ras_is_supported(adev, AMDGPU_RAS_BLOCK__UMC))
-		amdgpu_irq_put(adev, &adev->gmc.ecc_irq, 0);
+		if (adev->gmc.ecc_irq.funcs &&
+		    amdgpu_ras_is_supported(adev, AMDGPU_RAS_BLOCK__UMC))
+			amdgpu_irq_put(adev, &adev->gmc.ecc_irq, 0);
+	}
 
 	return 0;
 }
diff --git a/drivers/gpu/drm/amd/amdgpu/soc15.c b/drivers/gpu/drm/amd/amdgpu/soc15.c
index 8d16dacdc172..e60c69c5f894 100644
--- a/drivers/gpu/drm/amd/amdgpu/soc15.c
+++ b/drivers/gpu/drm/amd/amdgpu/soc15.c
@@ -1295,7 +1295,12 @@ static int soc15_common_hw_fini(void *handle)
 	if (amdgpu_sriov_vf(adev))
 		xgpu_ai_mailbox_put_irq(adev);
 
+	/*
+	 * For minimal init, late_init is not called, hence RAS irqs are not
+	 * enabled.
+	 */
 	if ((!amdgpu_sriov_vf(adev)) &&
+	    (adev->init_lvl->level != AMDGPU_INIT_LEVEL_MINIMAL_XGMI) &&
 	    adev->nbio.ras_if &&
 	    amdgpu_ras_is_supported(adev, adev->nbio.ras_if->block)) {
 		if (adev->nbio.ras &&
-- 
2.25.1




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