1 files changed, 308 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c
new file mode 100644
index 000000000..ea5278f09
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c
@@ -0,0 +1,308 @@
+/*
+ * Copyright 2018 Advanced Micro Devices, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#include <linux/firmware.h>
+#include "amdgpu.h"
+#include "amdgpu_sdma.h"
+#include "amdgpu_ras.h"
+
+#define AMDGPU_CSA_SDMA_SIZE 64
+/* SDMA CSA reside in the 3rd page of CSA */
+#define AMDGPU_CSA_SDMA_OFFSET (4096 * 2)
+
+/*
+ * GPU SDMA IP block helpers function.
+ */
+
+struct amdgpu_sdma_instance *amdgpu_sdma_get_instance_from_ring(struct amdgpu_ring *ring)
+{
+	struct amdgpu_device *adev = ring->adev;
+	int i;
+
+	for (i = 0; i < adev->sdma.num_instances; i++)
+		if (ring == &adev->sdma.instance[i].ring ||
+		    ring == &adev->sdma.instance[i].page)
+			return &adev->sdma.instance[i];
+
+	return NULL;
+}
+
+int amdgpu_sdma_get_index_from_ring(struct amdgpu_ring *ring, uint32_t *index)
+{
+	struct amdgpu_device *adev = ring->adev;
+	int i;
+
+	for (i = 0; i < adev->sdma.num_instances; i++) {
+		if (ring == &adev->sdma.instance[i].ring ||
+			ring == &adev->sdma.instance[i].page) {
+			*index = i;
+			return 0;
+		}
+	}
+
+	return -EINVAL;
+}
+
+uint64_t amdgpu_sdma_get_csa_mc_addr(struct amdgpu_ring *ring,
+				     unsigned vmid)
+{
+	struct amdgpu_device *adev = ring->adev;
+	uint64_t csa_mc_addr;
+	uint32_t index = 0;
+	int r;
+
+	/* don't enable OS preemption on SDMA under SRIOV */
+	if (amdgpu_sriov_vf(adev) || vmid == 0 || !amdgpu_mcbp)
+		return 0;
+
+	if (ring->is_mes_queue) {
+		uint32_t offset = 0;
+
+		offset = offsetof(struct amdgpu_mes_ctx_meta_data,
+				  sdma[ring->idx].sdma_meta_data);
+		csa_mc_addr = amdgpu_mes_ctx_get_offs_gpu_addr(ring, offset);
+	} else {
+		r = amdgpu_sdma_get_index_from_ring(ring, &index);
+
+		if (r || index > 31)
+			csa_mc_addr = 0;
+		else
+			csa_mc_addr = amdgpu_csa_vaddr(adev) +
+				AMDGPU_CSA_SDMA_OFFSET +
+				index * AMDGPU_CSA_SDMA_SIZE;
+	}
+
+	return csa_mc_addr;
+}
+
+int amdgpu_sdma_ras_late_init(struct amdgpu_device *adev,
+			      struct ras_common_if *ras_block)
+{
+	int r, i;
+
+	r = amdgpu_ras_block_late_init(adev, ras_block);
+	if (r)
+		return r;
+
+	if (amdgpu_ras_is_supported(adev, ras_block->block)) {
+		for (i = 0; i < adev->sdma.num_instances; i++) {
+			r = amdgpu_irq_get(adev, &adev->sdma.ecc_irq,
+				AMDGPU_SDMA_IRQ_INSTANCE0 + i);
+			if (r)
+				goto late_fini;
+		}
+	}
+
+	return 0;
+
+late_fini:
+	amdgpu_ras_block_late_fini(adev, ras_block);
+	return r;
+}
+
+int amdgpu_sdma_process_ras_data_cb(struct amdgpu_device *adev,
+		void *err_data,
+		struct amdgpu_iv_entry *entry)
+{
+	kgd2kfd_set_sram_ecc_flag(adev->kfd.dev);
+
+	if (amdgpu_sriov_vf(adev))
+		return AMDGPU_RAS_SUCCESS;
+
+	amdgpu_ras_reset_gpu(adev);
+
+	return AMDGPU_RAS_SUCCESS;
+}
+
+int amdgpu_sdma_process_ecc_irq(struct amdgpu_device *adev,
+				      struct amdgpu_irq_src *source,
+				      struct amdgpu_iv_entry *entry)
+{
+	struct ras_common_if *ras_if = adev->sdma.ras_if;
+	struct ras_dispatch_if ih_data = {
+		.entry = entry,
+	};
+
+	if (!ras_if)
+		return 0;
+
+	ih_data.head = *ras_if;
+
+	amdgpu_ras_interrupt_dispatch(adev, &ih_data);
+	return 0;
+}
+
+static int amdgpu_sdma_init_inst_ctx(struct amdgpu_sdma_instance *sdma_inst)
+{
+	int err = 0;
+	uint16_t version_major;
+	const struct common_firmware_header *header = NULL;
+	const struct sdma_firmware_header_v1_0 *hdr;
+	const struct sdma_firmware_header_v2_0 *hdr_v2;
+
+	err = amdgpu_ucode_validate(sdma_inst->fw);
+	if (err)
+		return err;
+
+	header = (const struct common_firmware_header *)
+		sdma_inst->fw->data;
+	version_major = le16_to_cpu(header->header_version_major);
+
+	switch (version_major) {
+	case 1:
+		hdr = (const struct sdma_firmware_header_v1_0 *)sdma_inst->fw->data;
+		sdma_inst->fw_version = le32_to_cpu(hdr->header.ucode_version);
+		sdma_inst->feature_version = le32_to_cpu(hdr->ucode_feature_version);
+		break;
+	case 2:
+		hdr_v2 = (const struct sdma_firmware_header_v2_0 *)sdma_inst->fw->data;
+		sdma_inst->fw_version = le32_to_cpu(hdr_v2->header.ucode_version);
+		sdma_inst->feature_version = le32_to_cpu(hdr_v2->ucode_feature_version);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	if (sdma_inst->feature_version >= 20)
+		sdma_inst->burst_nop = true;
+
+	return 0;
+}
+
+void amdgpu_sdma_destroy_inst_ctx(struct amdgpu_device *adev,
+				  bool duplicate)
+{
+	int i;
+
+	for (i = 0; i < adev->sdma.num_instances; i++) {
+		release_firmware(adev->sdma.instance[i].fw);
+		if (duplicate)
+			break;
+	}
+
+	memset((void *)adev->sdma.instance, 0,
+	       sizeof(struct amdgpu_sdma_instance) * AMDGPU_MAX_SDMA_INSTANCES);
+}
+
+int amdgpu_sdma_init_microcode(struct amdgpu_device *adev,
+			       char *fw_name, u32 instance,
+			       bool duplicate)
+{
+	struct amdgpu_firmware_info *info = NULL;
+	const struct common_firmware_header *header = NULL;
+	int err = 0, i;
+	const struct sdma_firmware_header_v2_0 *sdma_hdr;
+	uint16_t version_major;
+
+	err = request_firmware(&adev->sdma.instance[instance].fw, fw_name, adev->dev);
+	if (err)
+		goto out;
+
+	header = (const struct common_firmware_header *)
+		adev->sdma.instance[instance].fw->data;
+	version_major = le16_to_cpu(header->header_version_major);
+
+	if ((duplicate && instance) || (!duplicate && version_major > 1)) {
+		err = -EINVAL;
+		goto out;
+	}
+
+	err = amdgpu_sdma_init_inst_ctx(&adev->sdma.instance[instance]);
+	if (err)
+		goto out;
+
+	if (duplicate) {
+		for (i = 1; i < adev->sdma.num_instances; i++)
+			memcpy((void *)&adev->sdma.instance[i],
+			       (void *)&adev->sdma.instance[0],
+			       sizeof(struct amdgpu_sdma_instance));
+	}
+
+	if (amdgpu_sriov_vf(adev))
+		return 0;
+
+	DRM_DEBUG("psp_load == '%s'\n",
+		  adev->firmware.load_type == AMDGPU_FW_LOAD_PSP ? "true" : "false");
+
+	if (adev->firmware.load_type == AMDGPU_FW_LOAD_PSP) {
+		switch (version_major) {
+		case 1:
+			for (i = 0; i < adev->sdma.num_instances; i++) {
+				if (!duplicate && (instance != i))
+					continue;
+				else {
+					info = &adev->firmware.ucode[AMDGPU_UCODE_ID_SDMA0 + i];
+					info->ucode_id = AMDGPU_UCODE_ID_SDMA0 + i;
+					info->fw = adev->sdma.instance[i].fw;
+					adev->firmware.fw_size +=
+						ALIGN(le32_to_cpu(header->ucode_size_bytes), PAGE_SIZE);
+				}
+			}
+			break;
+		case 2:
+			sdma_hdr = (const struct sdma_firmware_header_v2_0 *)
+				adev->sdma.instance[0].fw->data;
+			info = &adev->firmware.ucode[AMDGPU_UCODE_ID_SDMA_UCODE_TH0];
+			info->ucode_id = AMDGPU_UCODE_ID_SDMA_UCODE_TH0;
+			info->fw = adev->sdma.instance[0].fw;
+			adev->firmware.fw_size +=
+				ALIGN(le32_to_cpu(sdma_hdr->ctx_ucode_size_bytes), PAGE_SIZE);
+			info = &adev->firmware.ucode[AMDGPU_UCODE_ID_SDMA_UCODE_TH1];
+			info->ucode_id = AMDGPU_UCODE_ID_SDMA_UCODE_TH1;
+			info->fw = adev->sdma.instance[0].fw;
+			adev->firmware.fw_size +=
+				ALIGN(le32_to_cpu(sdma_hdr->ctl_ucode_size_bytes), PAGE_SIZE);
+			break;
+		default:
+			err = -EINVAL;
+		}
+	}
+
+out:
+	if (err) {
+		DRM_ERROR("SDMA: Failed to init firmware \"%s\"\n", fw_name);
+		amdgpu_sdma_destroy_inst_ctx(adev, duplicate);
+	}
+	return err;
+}
+
+void amdgpu_sdma_unset_buffer_funcs_helper(struct amdgpu_device *adev)
+{
+	struct amdgpu_ring *sdma;
+	int i;
+
+	for (i = 0; i < adev->sdma.num_instances; i++) {
+		if (adev->sdma.has_page_queue) {
+			sdma = &adev->sdma.instance[i].page;
+			if (adev->mman.buffer_funcs_ring == sdma) {
+				amdgpu_ttm_set_buffer_funcs_status(adev, false);
+				break;
+			}
+		}
+		sdma = &adev->sdma.instance[i].ring;
+		if (adev->mman.buffer_funcs_ring == sdma) {
+			amdgpu_ttm_set_buffer_funcs_status(adev, false);
+			break;
+		}
+	}
+}