1 files changed, 91 insertions, 55 deletions

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device.c b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
index 61fff25b4ce7..a8fa33a08de3 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device.c
@@ -27,6 +27,7 @@
 #include "kfd_priv.h"
 #include "kfd_device_queue_manager.h"
 #include "kfd_pm4_headers_vi.h"
+#include "cwsr_trap_handler_gfx8.asm"
 
 #define MQD_SIZE_ALIGNED 768
 
@@ -38,7 +39,8 @@ static const struct kfd_device_info kaveri_device_info = {
 	.ih_ring_entry_size = 4 * sizeof(uint32_t),
 	.event_interrupt_class = &event_interrupt_class_cik,
 	.num_of_watch_points = 4,
-	.mqd_size_aligned = MQD_SIZE_ALIGNED
+	.mqd_size_aligned = MQD_SIZE_ALIGNED,
+	.supports_cwsr = false,
 };
 
 static const struct kfd_device_info carrizo_device_info = {
@@ -49,7 +51,8 @@ static const struct kfd_device_info carrizo_device_info = {
 	.ih_ring_entry_size = 4 * sizeof(uint32_t),
 	.event_interrupt_class = &event_interrupt_class_cik,
 	.num_of_watch_points = 4,
-	.mqd_size_aligned = MQD_SIZE_ALIGNED
+	.mqd_size_aligned = MQD_SIZE_ALIGNED,
+	.supports_cwsr = true,
 };
 
 struct kfd_deviceid {
@@ -92,6 +95,8 @@ static int kfd_gtt_sa_init(struct kfd_dev *kfd, unsigned int buf_size,
 				unsigned int chunk_size);
 static void kfd_gtt_sa_fini(struct kfd_dev *kfd);
 
+static int kfd_resume(struct kfd_dev *kfd);
+
 static const struct kfd_device_info *lookup_device_info(unsigned short did)
 {
 	size_t i;
@@ -168,23 +173,9 @@ static bool device_iommu_pasid_init(struct kfd_dev *kfd)
 	pasid_limit = min_t(unsigned int,
 			(unsigned int)(1 << kfd->device_info->max_pasid_bits),
 			iommu_info.max_pasids);
-	/*
-	 * last pasid is used for kernel queues doorbells
-	 * in the future the last pasid might be used for a kernel thread.
-	 */
-	pasid_limit = min_t(unsigned int,
-				pasid_limit,
-				kfd->doorbell_process_limit - 1);
-
-	err = amd_iommu_init_device(kfd->pdev, pasid_limit);
-	if (err < 0) {
-		dev_err(kfd_device, "error initializing iommu device\n");
-		return false;
-	}
 
 	if (!kfd_set_pasid_limit(pasid_limit)) {
 		dev_err(kfd_device, "error setting pasid limit\n");
-		amd_iommu_free_device(kfd->pdev);
 		return false;
 	}
 
@@ -196,7 +187,7 @@ static void iommu_pasid_shutdown_callback(struct pci_dev *pdev, int pasid)
 	struct kfd_dev *dev = kfd_device_by_pci_dev(pdev);
 
 	if (dev)
-		kfd_unbind_process_from_device(dev, pasid);
+		kfd_process_iommu_unbind_callback(dev, pasid);
 }
 
 /*
@@ -224,6 +215,17 @@ static int iommu_invalid_ppr_cb(struct pci_dev *pdev, int pasid,
 	return AMD_IOMMU_INV_PRI_RSP_INVALID;
 }
 
+static void kfd_cwsr_init(struct kfd_dev *kfd)
+{
+	if (cwsr_enable && kfd->device_info->supports_cwsr) {
+		BUILD_BUG_ON(sizeof(cwsr_trap_gfx8_hex) > PAGE_SIZE);
+
+		kfd->cwsr_isa = cwsr_trap_gfx8_hex;
+		kfd->cwsr_isa_size = sizeof(cwsr_trap_gfx8_hex);
+		kfd->cwsr_enabled = true;
+	}
+}
+
 bool kgd2kfd_device_init(struct kfd_dev *kfd,
 			 const struct kgd2kfd_shared_resources *gpu_resources)
 {
@@ -231,6 +233,22 @@ bool kgd2kfd_device_init(struct kfd_dev *kfd,
 
 	kfd->shared_resources = *gpu_resources;
 
+	kfd->vm_info.first_vmid_kfd = ffs(gpu_resources->compute_vmid_bitmap)-1;
+	kfd->vm_info.last_vmid_kfd = fls(gpu_resources->compute_vmid_bitmap)-1;
+	kfd->vm_info.vmid_num_kfd = kfd->vm_info.last_vmid_kfd
+			- kfd->vm_info.first_vmid_kfd + 1;
+
+	/* Verify module parameters regarding mapped process number*/
+	if ((hws_max_conc_proc < 0)
+			|| (hws_max_conc_proc > kfd->vm_info.vmid_num_kfd)) {
+		dev_err(kfd_device,
+			"hws_max_conc_proc %d must be between 0 and %d, use %d instead\n",
+			hws_max_conc_proc, kfd->vm_info.vmid_num_kfd,
+			kfd->vm_info.vmid_num_kfd);
+		kfd->max_proc_per_quantum = kfd->vm_info.vmid_num_kfd;
+	} else
+		kfd->max_proc_per_quantum = hws_max_conc_proc;
+
 	/* calculate max size of mqds needed for queues */
 	size = max_num_of_queues_per_device *
 			kfd->device_info->mqd_size_aligned;
@@ -280,29 +298,24 @@ bool kgd2kfd_device_init(struct kfd_dev *kfd,
 		goto kfd_interrupt_error;
 	}
 
-	if (!device_iommu_pasid_init(kfd)) {
-		dev_err(kfd_device,
-			"Error initializing iommuv2 for device %x:%x\n",
-			kfd->pdev->vendor, kfd->pdev->device);
-		goto device_iommu_pasid_error;
-	}
-	amd_iommu_set_invalidate_ctx_cb(kfd->pdev,
-						iommu_pasid_shutdown_callback);
-	amd_iommu_set_invalid_ppr_cb(kfd->pdev, iommu_invalid_ppr_cb);
-
 	kfd->dqm = device_queue_manager_init(kfd);
 	if (!kfd->dqm) {
 		dev_err(kfd_device, "Error initializing queue manager\n");
 		goto device_queue_manager_error;
 	}
 
-	if (kfd->dqm->ops.start(kfd->dqm)) {
+	if (!device_iommu_pasid_init(kfd)) {
 		dev_err(kfd_device,
-			"Error starting queue manager for device %x:%x\n",
+			"Error initializing iommuv2 for device %x:%x\n",
 			kfd->pdev->vendor, kfd->pdev->device);
-		goto dqm_start_error;
+		goto device_iommu_pasid_error;
 	}
 
+	kfd_cwsr_init(kfd);
+
+	if (kfd_resume(kfd))
+		goto kfd_resume_error;
+
 	kfd->dbgmgr = NULL;
 
 	kfd->init_complete = true;
@@ -314,11 +327,10 @@ bool kgd2kfd_device_init(struct kfd_dev *kfd,
 
 	goto out;
 
-dqm_start_error:
+kfd_resume_error:
+device_iommu_pasid_error:
 	device_queue_manager_uninit(kfd->dqm);
 device_queue_manager_error:
-	amd_iommu_free_device(kfd->pdev);
-device_iommu_pasid_error:
 	kfd_interrupt_exit(kfd);
 kfd_interrupt_error:
 	kfd_topology_remove_device(kfd);
@@ -338,8 +350,8 @@ out:
 void kgd2kfd_device_exit(struct kfd_dev *kfd)
 {
 	if (kfd->init_complete) {
+		kgd2kfd_suspend(kfd);
 		device_queue_manager_uninit(kfd->dqm);
-		amd_iommu_free_device(kfd->pdev);
 		kfd_interrupt_exit(kfd);
 		kfd_topology_remove_device(kfd);
 		kfd_doorbell_fini(kfd);
@@ -352,35 +364,59 @@ void kgd2kfd_device_exit(struct kfd_dev *kfd)
 
 void kgd2kfd_suspend(struct kfd_dev *kfd)
 {
-	if (kfd->init_complete) {
-		kfd->dqm->ops.stop(kfd->dqm);
-		amd_iommu_set_invalidate_ctx_cb(kfd->pdev, NULL);
-		amd_iommu_set_invalid_ppr_cb(kfd->pdev, NULL);
-		amd_iommu_free_device(kfd->pdev);
-	}
+	if (!kfd->init_complete)
+		return;
+
+	kfd->dqm->ops.stop(kfd->dqm);
+
+	kfd_unbind_processes_from_device(kfd);
+
+	amd_iommu_set_invalidate_ctx_cb(kfd->pdev, NULL);
+	amd_iommu_set_invalid_ppr_cb(kfd->pdev, NULL);
+	amd_iommu_free_device(kfd->pdev);
 }
 
 int kgd2kfd_resume(struct kfd_dev *kfd)
 {
-	unsigned int pasid_limit;
-	int err;
+	if (!kfd->init_complete)
+		return 0;
 
-	pasid_limit = kfd_get_pasid_limit();
+	return kfd_resume(kfd);
 
-	if (kfd->init_complete) {
-		err = amd_iommu_init_device(kfd->pdev, pasid_limit);
-		if (err < 0) {
-			dev_err(kfd_device, "failed to initialize iommu\n");
-			return -ENXIO;
-		}
+}
+
+static int kfd_resume(struct kfd_dev *kfd)
+{
+	int err = 0;
+	unsigned int pasid_limit = kfd_get_pasid_limit();
+
+	err = amd_iommu_init_device(kfd->pdev, pasid_limit);
+	if (err)
+		return -ENXIO;
+	amd_iommu_set_invalidate_ctx_cb(kfd->pdev,
+					iommu_pasid_shutdown_callback);
+	amd_iommu_set_invalid_ppr_cb(kfd->pdev,
+				     iommu_invalid_ppr_cb);
 
-		amd_iommu_set_invalidate_ctx_cb(kfd->pdev,
-						iommu_pasid_shutdown_callback);
-		amd_iommu_set_invalid_ppr_cb(kfd->pdev, iommu_invalid_ppr_cb);
-		kfd->dqm->ops.start(kfd->dqm);
+	err = kfd_bind_processes_to_device(kfd);
+	if (err)
+		goto processes_bind_error;
+
+	err = kfd->dqm->ops.start(kfd->dqm);
+	if (err) {
+		dev_err(kfd_device,
+			"Error starting queue manager for device %x:%x\n",
+			kfd->pdev->vendor, kfd->pdev->device);
+		goto dqm_start_error;
 	}
 
-	return 0;
+	return err;
+
+dqm_start_error:
+processes_bind_error:
+	amd_iommu_free_device(kfd->pdev);
+
+	return err;
 }
 
 /* This is called directly from KGD at ISR. */
@@ -394,7 +430,7 @@ void kgd2kfd_interrupt(struct kfd_dev *kfd, const void *ih_ring_entry)
 	if (kfd->interrupts_active
 	    && interrupt_is_wanted(kfd, ih_ring_entry)
 	    && enqueue_ih_ring_entry(kfd, ih_ring_entry))
-		schedule_work(&kfd->interrupt_work);
+		queue_work(kfd->ih_wq, &kfd->interrupt_work);
 
 	spin_unlock(&kfd->interrupt_lock);
 }