drm/amdkfd: Add dGPU support to the device queue manager

GFXv7 and v8 dGPUs use a different addressing mode for KFD compared
to APUs (GPUVM64 vs HSA64). And dGPUs don't support MTYPE_CC. They
use MTYPE_UC instead for memory that requires coherency.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>

1 files changed, 93 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_vi.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_vi.c
index 2fbce57a2f21..fd60a116be37 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_vi.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager_vi.c
@@ -33,10 +33,21 @@ static bool set_cache_memory_policy_vi(struct device_queue_manager *dqm,
 				   enum cache_policy alternate_policy,
 				   void __user *alternate_aperture_base,
 				   uint64_t alternate_aperture_size);
+static bool set_cache_memory_policy_vi_tonga(struct device_queue_manager *dqm,
+			struct qcm_process_device *qpd,
+			enum cache_policy default_policy,
+			enum cache_policy alternate_policy,
+			void __user *alternate_aperture_base,
+			uint64_t alternate_aperture_size);
 static int update_qpd_vi(struct device_queue_manager *dqm,
 					struct qcm_process_device *qpd);
+static int update_qpd_vi_tonga(struct device_queue_manager *dqm,
+			struct qcm_process_device *qpd);
 static void init_sdma_vm(struct device_queue_manager *dqm, struct queue *q,
 				struct qcm_process_device *qpd);
+static void init_sdma_vm_tonga(struct device_queue_manager *dqm,
+			struct queue *q,
+			struct qcm_process_device *qpd);
 
 void device_queue_manager_init_vi(
 		struct device_queue_manager_asic_ops *asic_ops)
@@ -46,6 +57,14 @@ void device_queue_manager_init_vi(
 	asic_ops->init_sdma_vm = init_sdma_vm;
 }
 
+void device_queue_manager_init_vi_tonga(
+		struct device_queue_manager_asic_ops *asic_ops)
+{
+	asic_ops->set_cache_memory_policy = set_cache_memory_policy_vi_tonga;
+	asic_ops->update_qpd = update_qpd_vi_tonga;
+	asic_ops->init_sdma_vm = init_sdma_vm_tonga;
+}
+
 static uint32_t compute_sh_mem_bases_64bit(unsigned int top_address_nybble)
 {
 	/* In 64-bit mode, we can only control the top 3 bits of the LDS,
@@ -103,6 +122,33 @@ static bool set_cache_memory_policy_vi(struct device_queue_manager *dqm,
 	return true;
 }
 
+static bool set_cache_memory_policy_vi_tonga(struct device_queue_manager *dqm,
+		struct qcm_process_device *qpd,
+		enum cache_policy default_policy,
+		enum cache_policy alternate_policy,
+		void __user *alternate_aperture_base,
+		uint64_t alternate_aperture_size)
+{
+	uint32_t default_mtype;
+	uint32_t ape1_mtype;
+
+	default_mtype = (default_policy == cache_policy_coherent) ?
+			MTYPE_UC :
+			MTYPE_NC;
+
+	ape1_mtype = (alternate_policy == cache_policy_coherent) ?
+			MTYPE_UC :
+			MTYPE_NC;
+
+	qpd->sh_mem_config =
+			SH_MEM_ALIGNMENT_MODE_UNALIGNED <<
+				   SH_MEM_CONFIG__ALIGNMENT_MODE__SHIFT |
+			default_mtype << SH_MEM_CONFIG__DEFAULT_MTYPE__SHIFT |
+			ape1_mtype << SH_MEM_CONFIG__APE1_MTYPE__SHIFT;
+
+	return true;
+}
+
 static int update_qpd_vi(struct device_queue_manager *dqm,
 					struct qcm_process_device *qpd)
 {
@@ -144,6 +190,40 @@ static int update_qpd_vi(struct device_queue_manager *dqm,
 	return 0;
 }
 
+static int update_qpd_vi_tonga(struct device_queue_manager *dqm,
+			struct qcm_process_device *qpd)
+{
+	struct kfd_process_device *pdd;
+	unsigned int temp;
+
+	pdd = qpd_to_pdd(qpd);
+
+	/* check if sh_mem_config register already configured */
+	if (qpd->sh_mem_config == 0) {
+		qpd->sh_mem_config =
+				SH_MEM_ALIGNMENT_MODE_UNALIGNED <<
+					SH_MEM_CONFIG__ALIGNMENT_MODE__SHIFT |
+				MTYPE_UC <<
+					SH_MEM_CONFIG__DEFAULT_MTYPE__SHIFT |
+				MTYPE_UC <<
+					SH_MEM_CONFIG__APE1_MTYPE__SHIFT;
+
+		qpd->sh_mem_ape1_limit = 0;
+		qpd->sh_mem_ape1_base = 0;
+	}
+
+	/* On dGPU we're always in GPUVM64 addressing mode with 64-bit
+	 * aperture addresses.
+	 */
+	temp = get_sh_mem_bases_nybble_64(pdd);
+	qpd->sh_mem_bases = compute_sh_mem_bases_64bit(temp);
+
+	pr_debug("sh_mem_bases nybble: 0x%X and register 0x%X\n",
+		temp, qpd->sh_mem_bases);
+
+	return 0;
+}
+
 static void init_sdma_vm(struct device_queue_manager *dqm, struct queue *q,
 				struct qcm_process_device *qpd)
 {
@@ -159,3 +239,16 @@ static void init_sdma_vm(struct device_queue_manager *dqm, struct queue *q,
 
 	q->properties.sdma_vm_addr = value;
 }
+
+static void init_sdma_vm_tonga(struct device_queue_manager *dqm,
+			struct queue *q,
+			struct qcm_process_device *qpd)
+{
+	/* On dGPU we're always in GPUVM64 addressing mode with 64-bit
+	 * aperture addresses.
+	 */
+	q->properties.sdma_vm_addr =
+		((get_sh_mem_bases_nybble_64(qpd_to_pdd(qpd))) <<
+		 SDMA0_RLC0_VIRTUAL_ADDR__SHARED_BASE__SHIFT) &
+		SDMA0_RLC0_VIRTUAL_ADDR__SHARED_BASE_MASK;
+}