1 files changed, 921 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vpe.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vpe.c
new file mode 100644
index 000000000000..c23d97d34b7e
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vpe.c
@@ -0,0 +1,921 @@
+/*
+ * Copyright 2022 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 <drm/drm_drv.h>
+
+#include "amdgpu.h"
+#include "amdgpu_ucode.h"
+#include "amdgpu_vpe.h"
+#include "amdgpu_smu.h"
+#include "soc15_common.h"
+#include "vpe_v6_1.h"
+
+#define AMDGPU_CSA_VPE_SIZE 	64
+/* VPE CSA resides in the 4th page of CSA */
+#define AMDGPU_CSA_VPE_OFFSET 	(4096 * 3)
+
+/* 1 second timeout */
+#define VPE_IDLE_TIMEOUT	msecs_to_jiffies(1000)
+
+#define VPE_MAX_DPM_LEVEL			4
+#define FIXED1_8_BITS_PER_FRACTIONAL_PART	8
+#define GET_PRATIO_INTEGER_PART(x)		((x) >> FIXED1_8_BITS_PER_FRACTIONAL_PART)
+
+static void vpe_set_ring_funcs(struct amdgpu_device *adev);
+
+static inline uint16_t div16_u16_rem(uint16_t dividend, uint16_t divisor, uint16_t *remainder)
+{
+	*remainder = dividend % divisor;
+	return dividend / divisor;
+}
+
+static inline uint16_t complete_integer_division_u16(
+	uint16_t dividend,
+	uint16_t divisor,
+	uint16_t *remainder)
+{
+	return div16_u16_rem(dividend, divisor, (uint16_t *)remainder);
+}
+
+static uint16_t vpe_u1_8_from_fraction(uint16_t numerator, uint16_t denominator)
+{
+	u16 arg1_value = numerator;
+	u16 arg2_value = denominator;
+
+	uint16_t remainder;
+
+	/* determine integer part */
+	uint16_t res_value = complete_integer_division_u16(
+		arg1_value, arg2_value, &remainder);
+
+	if (res_value > 127 /* CHAR_MAX */)
+		return 0;
+
+	/* determine fractional part */
+	{
+		unsigned int i = FIXED1_8_BITS_PER_FRACTIONAL_PART;
+
+		do {
+			remainder <<= 1;
+
+			res_value <<= 1;
+
+			if (remainder >= arg2_value) {
+				res_value |= 1;
+				remainder -= arg2_value;
+			}
+		} while (--i != 0);
+	}
+
+	/* round up LSB */
+	{
+		uint16_t summand = (remainder << 1) >= arg2_value;
+
+		if ((res_value + summand) > 32767 /* SHRT_MAX */)
+			return 0;
+
+		res_value += summand;
+	}
+
+	return res_value;
+}
+
+static uint16_t vpe_internal_get_pratio(uint16_t from_frequency, uint16_t to_frequency)
+{
+	uint16_t pratio = vpe_u1_8_from_fraction(from_frequency, to_frequency);
+
+	if (GET_PRATIO_INTEGER_PART(pratio) > 1)
+		pratio = 0;
+
+	return pratio;
+}
+
+/*
+ * VPE has 4 DPM levels from level 0 (lowerest) to 3 (highest),
+ * VPE FW will dynamically decide which level should be used according to current loading.
+ *
+ * Get VPE and SOC clocks from PM, and select the appropriate four clock values,
+ * calculate the ratios of adjusting from one clock to another.
+ * The VPE FW can then request the appropriate frequency from the PMFW.
+ */
+int amdgpu_vpe_configure_dpm(struct amdgpu_vpe *vpe)
+{
+	struct amdgpu_device *adev = vpe->ring.adev;
+	uint32_t dpm_ctl;
+
+	if (adev->pm.dpm_enabled) {
+		struct dpm_clocks clock_table = { 0 };
+		struct dpm_clock *VPEClks;
+		struct dpm_clock *SOCClks;
+		uint32_t idx;
+		uint32_t pratio_vmax_vnorm = 0, pratio_vnorm_vmid = 0, pratio_vmid_vmin = 0;
+		uint16_t pratio_vmin_freq = 0, pratio_vmid_freq = 0, pratio_vnorm_freq = 0, pratio_vmax_freq = 0;
+
+		dpm_ctl = RREG32(vpe_get_reg_offset(vpe, 0, vpe->regs.dpm_enable));
+		dpm_ctl |= 1; /* DPM enablement */
+		WREG32(vpe_get_reg_offset(vpe, 0, vpe->regs.dpm_enable), dpm_ctl);
+
+		/* Get VPECLK and SOCCLK */
+		if (amdgpu_dpm_get_dpm_clock_table(adev, &clock_table)) {
+			dev_dbg(adev->dev, "%s: get clock failed!\n", __func__);
+			goto disable_dpm;
+		}
+
+		SOCClks = clock_table.SocClocks;
+		VPEClks = clock_table.VPEClocks;
+
+		/* vpe dpm only cares 4 levels. */
+		for (idx = 0; idx < VPE_MAX_DPM_LEVEL; idx++) {
+			uint32_t soc_dpm_level;
+			uint32_t min_freq;
+
+			if (idx == 0)
+				soc_dpm_level = 0;
+			else
+				soc_dpm_level = (idx * 2) + 1;
+
+			/* clamp the max level */
+			if (soc_dpm_level > PP_SMU_NUM_VPECLK_DPM_LEVELS - 1)
+				soc_dpm_level = PP_SMU_NUM_VPECLK_DPM_LEVELS - 1;
+
+			min_freq = (SOCClks[soc_dpm_level].Freq < VPEClks[soc_dpm_level].Freq) ?
+				   SOCClks[soc_dpm_level].Freq : VPEClks[soc_dpm_level].Freq;
+
+			switch (idx) {
+			case 0:
+				pratio_vmin_freq = min_freq;
+				break;
+			case 1:
+				pratio_vmid_freq = min_freq;
+				break;
+			case 2:
+				pratio_vnorm_freq = min_freq;
+				break;
+			case 3:
+				pratio_vmax_freq = min_freq;
+				break;
+			default:
+				break;
+			}
+		}
+
+		if (pratio_vmin_freq && pratio_vmid_freq && pratio_vnorm_freq && pratio_vmax_freq) {
+			uint32_t pratio_ctl;
+
+			pratio_vmax_vnorm = (uint32_t)vpe_internal_get_pratio(pratio_vmax_freq, pratio_vnorm_freq);
+			pratio_vnorm_vmid = (uint32_t)vpe_internal_get_pratio(pratio_vnorm_freq, pratio_vmid_freq);
+			pratio_vmid_vmin = (uint32_t)vpe_internal_get_pratio(pratio_vmid_freq, pratio_vmin_freq);
+
+			pratio_ctl = pratio_vmax_vnorm | (pratio_vnorm_vmid << 9) | (pratio_vmid_vmin << 18);
+			WREG32(vpe_get_reg_offset(vpe, 0, vpe->regs.dpm_pratio), pratio_ctl);		/* PRatio */
+			WREG32(vpe_get_reg_offset(vpe, 0, vpe->regs.dpm_request_interval), 24000);	/* 1ms, unit=1/24MHz */
+			WREG32(vpe_get_reg_offset(vpe, 0, vpe->regs.dpm_decision_threshold), 1200000);	/* 50ms */
+			WREG32(vpe_get_reg_offset(vpe, 0, vpe->regs.dpm_busy_clamp_threshold), 1200000);/* 50ms */
+			WREG32(vpe_get_reg_offset(vpe, 0, vpe->regs.dpm_idle_clamp_threshold), 1200000);/* 50ms */
+			dev_dbg(adev->dev, "%s: configure vpe dpm pratio done!\n", __func__);
+		} else {
+			dev_dbg(adev->dev, "%s: invalid pratio parameters!\n", __func__);
+			goto disable_dpm;
+		}
+	}
+	return 0;
+
+disable_dpm:
+	dpm_ctl = RREG32(vpe_get_reg_offset(vpe, 0, vpe->regs.dpm_enable));
+	dpm_ctl &= 0xfffffffe; /* Disable DPM */
+	WREG32(vpe_get_reg_offset(vpe, 0, vpe->regs.dpm_enable), dpm_ctl);
+	dev_dbg(adev->dev, "%s: disable vpe dpm\n", __func__);
+	return -EINVAL;
+}
+
+int amdgpu_vpe_psp_update_sram(struct amdgpu_device *adev)
+{
+	struct amdgpu_firmware_info ucode = {
+		.ucode_id = AMDGPU_UCODE_ID_VPE,
+		.mc_addr = adev->vpe.cmdbuf_gpu_addr,
+		.ucode_size = 8,
+	};
+
+	return psp_execute_ip_fw_load(&adev->psp, &ucode);
+}
+
+int amdgpu_vpe_init_microcode(struct amdgpu_vpe *vpe)
+{
+	struct amdgpu_device *adev = vpe->ring.adev;
+	const struct vpe_firmware_header_v1_0 *vpe_hdr;
+	char fw_prefix[32], fw_name[64];
+	int ret;
+
+	amdgpu_ucode_ip_version_decode(adev, VPE_HWIP, fw_prefix, sizeof(fw_prefix));
+	snprintf(fw_name, sizeof(fw_name), "amdgpu/%s.bin", fw_prefix);
+
+	ret = amdgpu_ucode_request(adev, &adev->vpe.fw, fw_name);
+	if (ret)
+		goto out;
+
+	vpe_hdr = (const struct vpe_firmware_header_v1_0 *)adev->vpe.fw->data;
+	adev->vpe.fw_version = le32_to_cpu(vpe_hdr->header.ucode_version);
+	adev->vpe.feature_version = le32_to_cpu(vpe_hdr->ucode_feature_version);
+
+	if (adev->firmware.load_type == AMDGPU_FW_LOAD_PSP) {
+		struct amdgpu_firmware_info *info;
+
+		info = &adev->firmware.ucode[AMDGPU_UCODE_ID_VPE_CTX];
+		info->ucode_id = AMDGPU_UCODE_ID_VPE_CTX;
+		info->fw = adev->vpe.fw;
+		adev->firmware.fw_size +=
+			ALIGN(le32_to_cpu(vpe_hdr->ctx_ucode_size_bytes), PAGE_SIZE);
+
+		info = &adev->firmware.ucode[AMDGPU_UCODE_ID_VPE_CTL];
+		info->ucode_id = AMDGPU_UCODE_ID_VPE_CTL;
+		info->fw = adev->vpe.fw;
+		adev->firmware.fw_size +=
+			ALIGN(le32_to_cpu(vpe_hdr->ctl_ucode_size_bytes), PAGE_SIZE);
+	}
+
+	return 0;
+out:
+	dev_err(adev->dev, "fail to initialize vpe microcode\n");
+	release_firmware(adev->vpe.fw);
+	adev->vpe.fw = NULL;
+	return ret;
+}
+
+int amdgpu_vpe_ring_init(struct amdgpu_vpe *vpe)
+{
+	struct amdgpu_device *adev = container_of(vpe, struct amdgpu_device, vpe);
+	struct amdgpu_ring *ring = &vpe->ring;
+	int ret;
+
+	ring->ring_obj = NULL;
+	ring->use_doorbell = true;
+	ring->vm_hub = AMDGPU_MMHUB0(0);
+	ring->doorbell_index = (adev->doorbell_index.vpe_ring << 1);
+	snprintf(ring->name, 4, "vpe");
+
+	ret = amdgpu_ring_init(adev, ring, 1024, &vpe->trap_irq, 0,
+			     AMDGPU_RING_PRIO_DEFAULT, NULL);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+int amdgpu_vpe_ring_fini(struct amdgpu_vpe *vpe)
+{
+	amdgpu_ring_fini(&vpe->ring);
+
+	return 0;
+}
+
+static int vpe_early_init(void *handle)
+{
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+	struct amdgpu_vpe *vpe = &adev->vpe;
+
+	switch (amdgpu_ip_version(adev, VPE_HWIP, 0)) {
+	case IP_VERSION(6, 1, 0):
+		vpe_v6_1_set_funcs(vpe);
+		break;
+	case IP_VERSION(6, 1, 1):
+		vpe_v6_1_set_funcs(vpe);
+		vpe->collaborate_mode = true;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	vpe_set_ring_funcs(adev);
+	vpe_set_regs(vpe);
+
+	dev_info(adev->dev, "VPE: collaborate mode %s", vpe->collaborate_mode ? "true" : "false");
+
+	return 0;
+}
+
+static void vpe_idle_work_handler(struct work_struct *work)
+{
+	struct amdgpu_device *adev =
+		container_of(work, struct amdgpu_device, vpe.idle_work.work);
+	unsigned int fences = 0;
+
+	fences += amdgpu_fence_count_emitted(&adev->vpe.ring);
+
+	if (fences == 0)
+		amdgpu_device_ip_set_powergating_state(adev, AMD_IP_BLOCK_TYPE_VPE, AMD_PG_STATE_GATE);
+	else
+		schedule_delayed_work(&adev->vpe.idle_work, VPE_IDLE_TIMEOUT);
+}
+
+static int vpe_common_init(struct amdgpu_vpe *vpe)
+{
+	struct amdgpu_device *adev = container_of(vpe, struct amdgpu_device, vpe);
+	int r;
+
+	r = amdgpu_bo_create_kernel(adev, PAGE_SIZE, PAGE_SIZE,
+				    AMDGPU_GEM_DOMAIN_GTT,
+				    &adev->vpe.cmdbuf_obj,
+				    &adev->vpe.cmdbuf_gpu_addr,
+				    (void **)&adev->vpe.cmdbuf_cpu_addr);
+	if (r) {
+		dev_err(adev->dev, "VPE: failed to allocate cmdbuf bo %d\n", r);
+		return r;
+	}
+
+	vpe->context_started = false;
+	INIT_DELAYED_WORK(&adev->vpe.idle_work, vpe_idle_work_handler);
+
+	return 0;
+}
+
+static int vpe_sw_init(void *handle)
+{
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+	struct amdgpu_vpe *vpe = &adev->vpe;
+	int ret;
+
+	ret = vpe_common_init(vpe);
+	if (ret)
+		goto out;
+
+	ret = vpe_irq_init(vpe);
+	if (ret)
+		goto out;
+
+	ret = vpe_ring_init(vpe);
+	if (ret)
+		goto out;
+
+	ret = vpe_init_microcode(vpe);
+	if (ret)
+		goto out;
+out:
+	return ret;
+}
+
+static int vpe_sw_fini(void *handle)
+{
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+	struct amdgpu_vpe *vpe = &adev->vpe;
+
+	release_firmware(vpe->fw);
+	vpe->fw = NULL;
+
+	vpe_ring_fini(vpe);
+
+	amdgpu_bo_free_kernel(&adev->vpe.cmdbuf_obj,
+			      &adev->vpe.cmdbuf_gpu_addr,
+			      (void **)&adev->vpe.cmdbuf_cpu_addr);
+
+	return 0;
+}
+
+static int vpe_hw_init(void *handle)
+{
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+	struct amdgpu_vpe *vpe = &adev->vpe;
+	int ret;
+
+	/* Power on VPE */
+	ret = amdgpu_device_ip_set_powergating_state(adev, AMD_IP_BLOCK_TYPE_VPE,
+						     AMD_PG_STATE_UNGATE);
+	if (ret)
+		return ret;
+
+	ret = vpe_load_microcode(vpe);
+	if (ret)
+		return ret;
+
+	ret = vpe_ring_start(vpe);
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+static int vpe_hw_fini(void *handle)
+{
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+	struct amdgpu_vpe *vpe = &adev->vpe;
+
+	vpe_ring_stop(vpe);
+
+	/* Power off VPE */
+	amdgpu_device_ip_set_powergating_state(adev, AMD_IP_BLOCK_TYPE_VPE, AMD_PG_STATE_GATE);
+
+	return 0;
+}
+
+static int vpe_suspend(void *handle)
+{
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+
+	cancel_delayed_work_sync(&adev->vpe.idle_work);
+
+	return vpe_hw_fini(adev);
+}
+
+static int vpe_resume(void *handle)
+{
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+
+	return vpe_hw_init(adev);
+}
+
+static void vpe_ring_insert_nop(struct amdgpu_ring *ring, uint32_t count)
+{
+	int i;
+
+	for (i = 0; i < count; i++)
+		if (i == 0)
+			amdgpu_ring_write(ring, ring->funcs->nop |
+				VPE_CMD_NOP_HEADER_COUNT(count - 1));
+		else
+			amdgpu_ring_write(ring, ring->funcs->nop);
+}
+
+static uint64_t vpe_get_csa_mc_addr(struct amdgpu_ring *ring, uint32_t vmid)
+{
+	struct amdgpu_device *adev = ring->adev;
+	uint32_t index = 0;
+	uint64_t csa_mc_addr;
+
+	if (amdgpu_sriov_vf(adev) || vmid == 0 || !adev->gfx.mcbp)
+		return 0;
+
+	csa_mc_addr = amdgpu_csa_vaddr(adev) + AMDGPU_CSA_VPE_OFFSET +
+		      index * AMDGPU_CSA_VPE_SIZE;
+
+	return csa_mc_addr;
+}
+
+static void vpe_ring_emit_pred_exec(struct amdgpu_ring *ring,
+				    uint32_t device_select,
+				    uint32_t exec_count)
+{
+	if (!ring->adev->vpe.collaborate_mode)
+		return;
+
+	amdgpu_ring_write(ring, VPE_CMD_HEADER(VPE_CMD_OPCODE_PRED_EXE, 0) |
+				(device_select << 16));
+	amdgpu_ring_write(ring, exec_count & 0x1fff);
+}
+
+static void vpe_ring_emit_ib(struct amdgpu_ring *ring,
+			     struct amdgpu_job *job,
+			     struct amdgpu_ib *ib,
+			     uint32_t flags)
+{
+	uint32_t vmid = AMDGPU_JOB_GET_VMID(job);
+	uint64_t csa_mc_addr = vpe_get_csa_mc_addr(ring, vmid);
+
+	amdgpu_ring_write(ring, VPE_CMD_HEADER(VPE_CMD_OPCODE_INDIRECT, 0) |
+				VPE_CMD_INDIRECT_HEADER_VMID(vmid & 0xf));
+
+	/* base must be 32 byte aligned */
+	amdgpu_ring_write(ring, ib->gpu_addr & 0xffffffe0);
+	amdgpu_ring_write(ring, upper_32_bits(ib->gpu_addr));
+	amdgpu_ring_write(ring, ib->length_dw);
+	amdgpu_ring_write(ring, lower_32_bits(csa_mc_addr));
+	amdgpu_ring_write(ring, upper_32_bits(csa_mc_addr));
+}
+
+static void vpe_ring_emit_fence(struct amdgpu_ring *ring, uint64_t addr,
+				uint64_t seq, unsigned int flags)
+{
+	int i = 0;
+
+	do {
+		/* write the fence */
+		amdgpu_ring_write(ring, VPE_CMD_HEADER(VPE_CMD_OPCODE_FENCE, 0));
+		/* zero in first two bits */
+		WARN_ON_ONCE(addr & 0x3);
+		amdgpu_ring_write(ring, lower_32_bits(addr));
+		amdgpu_ring_write(ring, upper_32_bits(addr));
+		amdgpu_ring_write(ring, i == 0 ? lower_32_bits(seq) : upper_32_bits(seq));
+		addr += 4;
+	} while ((flags & AMDGPU_FENCE_FLAG_64BIT) && (i++ < 1));
+
+	if (flags & AMDGPU_FENCE_FLAG_INT) {
+		/* generate an interrupt */
+		amdgpu_ring_write(ring, VPE_CMD_HEADER(VPE_CMD_OPCODE_TRAP, 0));
+		amdgpu_ring_write(ring, 0);
+	}
+
+}
+
+static void vpe_ring_emit_pipeline_sync(struct amdgpu_ring *ring)
+{
+	uint32_t seq = ring->fence_drv.sync_seq;
+	uint64_t addr = ring->fence_drv.gpu_addr;
+
+	vpe_ring_emit_pred_exec(ring, 0, 6);
+
+	/* wait for idle */
+	amdgpu_ring_write(ring, VPE_CMD_HEADER(VPE_CMD_OPCODE_POLL_REGMEM,
+				VPE_POLL_REGMEM_SUBOP_REGMEM) |
+				VPE_CMD_POLL_REGMEM_HEADER_FUNC(3) | /* equal */
+				VPE_CMD_POLL_REGMEM_HEADER_MEM(1));
+	amdgpu_ring_write(ring, addr & 0xfffffffc);
+	amdgpu_ring_write(ring, upper_32_bits(addr));
+	amdgpu_ring_write(ring, seq); /* reference */
+	amdgpu_ring_write(ring, 0xffffffff); /* mask */
+	amdgpu_ring_write(ring, VPE_CMD_POLL_REGMEM_DW5_RETRY_COUNT(0xfff) |
+				VPE_CMD_POLL_REGMEM_DW5_INTERVAL(4));
+}
+
+static void vpe_ring_emit_wreg(struct amdgpu_ring *ring, uint32_t reg, uint32_t val)
+{
+	vpe_ring_emit_pred_exec(ring, 0, 3);
+
+	amdgpu_ring_write(ring, VPE_CMD_HEADER(VPE_CMD_OPCODE_REG_WRITE, 0));
+	amdgpu_ring_write(ring,	reg << 2);
+	amdgpu_ring_write(ring, val);
+}
+
+static void vpe_ring_emit_reg_wait(struct amdgpu_ring *ring, uint32_t reg,
+				   uint32_t val, uint32_t mask)
+{
+	vpe_ring_emit_pred_exec(ring, 0, 6);
+
+	amdgpu_ring_write(ring, VPE_CMD_HEADER(VPE_CMD_OPCODE_POLL_REGMEM,
+				VPE_POLL_REGMEM_SUBOP_REGMEM) |
+				VPE_CMD_POLL_REGMEM_HEADER_FUNC(3) | /* equal */
+				VPE_CMD_POLL_REGMEM_HEADER_MEM(0));
+	amdgpu_ring_write(ring, reg << 2);
+	amdgpu_ring_write(ring, 0);
+	amdgpu_ring_write(ring, val); /* reference */
+	amdgpu_ring_write(ring, mask); /* mask */
+	amdgpu_ring_write(ring, VPE_CMD_POLL_REGMEM_DW5_RETRY_COUNT(0xfff) |
+				VPE_CMD_POLL_REGMEM_DW5_INTERVAL(10));
+}
+
+static void vpe_ring_emit_vm_flush(struct amdgpu_ring *ring, unsigned int vmid,
+				   uint64_t pd_addr)
+{
+	amdgpu_gmc_emit_flush_gpu_tlb(ring, vmid, pd_addr);
+}
+
+static unsigned int vpe_ring_init_cond_exec(struct amdgpu_ring *ring,
+					    uint64_t addr)
+{
+	unsigned int ret;
+
+	amdgpu_ring_write(ring, VPE_CMD_HEADER(VPE_CMD_OPCODE_COND_EXE, 0));
+	amdgpu_ring_write(ring, lower_32_bits(addr));
+	amdgpu_ring_write(ring, upper_32_bits(addr));
+	amdgpu_ring_write(ring, 1);
+	ret = ring->wptr & ring->buf_mask;
+	amdgpu_ring_write(ring, 0);
+
+	return ret;
+}
+
+static int vpe_ring_preempt_ib(struct amdgpu_ring *ring)
+{
+	struct amdgpu_device *adev = ring->adev;
+	struct amdgpu_vpe *vpe = &adev->vpe;
+	uint32_t preempt_reg = vpe->regs.queue0_preempt;
+	int i, r = 0;
+
+	/* assert preemption condition */
+	amdgpu_ring_set_preempt_cond_exec(ring, false);
+
+	/* emit the trailing fence */
+	ring->trail_seq += 1;
+	amdgpu_ring_alloc(ring, 10);
+	vpe_ring_emit_fence(ring, ring->trail_fence_gpu_addr, ring->trail_seq, 0);
+	amdgpu_ring_commit(ring);
+
+	/* assert IB preemption */
+	WREG32(vpe_get_reg_offset(vpe, ring->me, preempt_reg), 1);
+
+	/* poll the trailing fence */
+	for (i = 0; i < adev->usec_timeout; i++) {
+		if (ring->trail_seq ==
+		    le32_to_cpu(*(ring->trail_fence_cpu_addr)))
+			break;
+		udelay(1);
+	}
+
+	if (i >= adev->usec_timeout) {
+		r = -EINVAL;
+		dev_err(adev->dev, "ring %d failed to be preempted\n", ring->idx);
+	}
+
+	/* deassert IB preemption */
+	WREG32(vpe_get_reg_offset(vpe, ring->me, preempt_reg), 0);
+
+	/* deassert the preemption condition */
+	amdgpu_ring_set_preempt_cond_exec(ring, true);
+
+	return r;
+}
+
+static int vpe_set_clockgating_state(void *handle,
+				     enum amd_clockgating_state state)
+{
+	return 0;
+}
+
+static int vpe_set_powergating_state(void *handle,
+				     enum amd_powergating_state state)
+{
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+	struct amdgpu_vpe *vpe = &adev->vpe;
+
+	if (!adev->pm.dpm_enabled)
+		dev_err(adev->dev, "Without PM, cannot support powergating\n");
+
+	dev_dbg(adev->dev, "%s: %s!\n", __func__, (state == AMD_PG_STATE_GATE) ? "GATE":"UNGATE");
+
+	if (state == AMD_PG_STATE_GATE) {
+		amdgpu_dpm_enable_vpe(adev, false);
+		vpe->context_started = false;
+	} else {
+		amdgpu_dpm_enable_vpe(adev, true);
+	}
+
+	return 0;
+}
+
+static uint64_t vpe_ring_get_rptr(struct amdgpu_ring *ring)
+{
+	struct amdgpu_device *adev = ring->adev;
+	struct amdgpu_vpe *vpe = &adev->vpe;
+	uint64_t rptr;
+
+	if (ring->use_doorbell) {
+		rptr = atomic64_read((atomic64_t *)ring->rptr_cpu_addr);
+		dev_dbg(adev->dev, "rptr/doorbell before shift == 0x%016llx\n", rptr);
+	} else {
+		rptr = RREG32(vpe_get_reg_offset(vpe, ring->me, vpe->regs.queue0_rb_rptr_hi));
+		rptr = rptr << 32;
+		rptr |= RREG32(vpe_get_reg_offset(vpe, ring->me, vpe->regs.queue0_rb_rptr_lo));
+		dev_dbg(adev->dev, "rptr before shift [%i] == 0x%016llx\n", ring->me, rptr);
+	}
+
+	return (rptr >> 2);
+}
+
+static uint64_t vpe_ring_get_wptr(struct amdgpu_ring *ring)
+{
+	struct amdgpu_device *adev = ring->adev;
+	struct amdgpu_vpe *vpe = &adev->vpe;
+	uint64_t wptr;
+
+	if (ring->use_doorbell) {
+		wptr = atomic64_read((atomic64_t *)ring->wptr_cpu_addr);
+		dev_dbg(adev->dev, "wptr/doorbell before shift == 0x%016llx\n", wptr);
+	} else {
+		wptr = RREG32(vpe_get_reg_offset(vpe, ring->me, vpe->regs.queue0_rb_wptr_hi));
+		wptr = wptr << 32;
+		wptr |= RREG32(vpe_get_reg_offset(vpe, ring->me, vpe->regs.queue0_rb_wptr_lo));
+		dev_dbg(adev->dev, "wptr before shift [%i] == 0x%016llx\n", ring->me, wptr);
+	}
+
+	return (wptr >> 2);
+}
+
+static void vpe_ring_set_wptr(struct amdgpu_ring *ring)
+{
+	struct amdgpu_device *adev = ring->adev;
+	struct amdgpu_vpe *vpe = &adev->vpe;
+
+	if (ring->use_doorbell) {
+		dev_dbg(adev->dev, "Using doorbell, \
+			wptr_offs == 0x%08x, \
+			lower_32_bits(ring->wptr) << 2 == 0x%08x, \
+			upper_32_bits(ring->wptr) << 2 == 0x%08x\n",
+			ring->wptr_offs,
+			lower_32_bits(ring->wptr << 2),
+			upper_32_bits(ring->wptr << 2));
+		atomic64_set((atomic64_t *)ring->wptr_cpu_addr, ring->wptr << 2);
+		WDOORBELL64(ring->doorbell_index, ring->wptr << 2);
+		if (vpe->collaborate_mode)
+			WDOORBELL64(ring->doorbell_index + 4, ring->wptr << 2);
+	} else {
+		int i;
+
+		for (i = 0; i < vpe->num_instances; i++) {
+			dev_dbg(adev->dev, "Not using doorbell, \
+				regVPEC_QUEUE0_RB_WPTR == 0x%08x, \
+				regVPEC_QUEUE0_RB_WPTR_HI == 0x%08x\n",
+				lower_32_bits(ring->wptr << 2),
+				upper_32_bits(ring->wptr << 2));
+			WREG32(vpe_get_reg_offset(vpe, i, vpe->regs.queue0_rb_wptr_lo),
+			       lower_32_bits(ring->wptr << 2));
+			WREG32(vpe_get_reg_offset(vpe, i, vpe->regs.queue0_rb_wptr_hi),
+			       upper_32_bits(ring->wptr << 2));
+		}
+	}
+}
+
+static int vpe_ring_test_ring(struct amdgpu_ring *ring)
+{
+	struct amdgpu_device *adev = ring->adev;
+	const uint32_t test_pattern = 0xdeadbeef;
+	uint32_t index, i;
+	uint64_t wb_addr;
+	int ret;
+
+	ret = amdgpu_device_wb_get(adev, &index);
+	if (ret) {
+		dev_err(adev->dev, "(%d) failed to allocate wb slot\n", ret);
+		return ret;
+	}
+
+	adev->wb.wb[index] = 0;
+	wb_addr = adev->wb.gpu_addr + (index * 4);
+
+	ret = amdgpu_ring_alloc(ring, 4);
+	if (ret) {
+		dev_err(adev->dev, "amdgpu: dma failed to lock ring %d (%d).\n", ring->idx, ret);
+		goto out;
+	}
+
+	amdgpu_ring_write(ring, VPE_CMD_HEADER(VPE_CMD_OPCODE_FENCE, 0));
+	amdgpu_ring_write(ring, lower_32_bits(wb_addr));
+	amdgpu_ring_write(ring, upper_32_bits(wb_addr));
+	amdgpu_ring_write(ring, test_pattern);
+	amdgpu_ring_commit(ring);
+
+	for (i = 0; i < adev->usec_timeout; i++) {
+		if (le32_to_cpu(adev->wb.wb[index]) == test_pattern)
+			goto out;
+		udelay(1);
+	}
+
+	ret = -ETIMEDOUT;
+out:
+	amdgpu_device_wb_free(adev, index);
+
+	return ret;
+}
+
+static int vpe_ring_test_ib(struct amdgpu_ring *ring, long timeout)
+{
+	struct amdgpu_device *adev = ring->adev;
+	const uint32_t test_pattern = 0xdeadbeef;
+	struct amdgpu_ib ib = {};
+	struct dma_fence *f = NULL;
+	uint32_t index;
+	uint64_t wb_addr;
+	int ret;
+
+	ret = amdgpu_device_wb_get(adev, &index);
+	if (ret) {
+		dev_err(adev->dev, "(%d) failed to allocate wb slot\n", ret);
+		return ret;
+	}
+
+	adev->wb.wb[index] = 0;
+	wb_addr = adev->wb.gpu_addr + (index * 4);
+
+	ret = amdgpu_ib_get(adev, NULL, 256, AMDGPU_IB_POOL_DIRECT, &ib);
+	if (ret)
+		goto err0;
+
+	ib.ptr[0] = VPE_CMD_HEADER(VPE_CMD_OPCODE_FENCE, 0);
+	ib.ptr[1] = lower_32_bits(wb_addr);
+	ib.ptr[2] = upper_32_bits(wb_addr);
+	ib.ptr[3] = test_pattern;
+	ib.ptr[4] = VPE_CMD_HEADER(VPE_CMD_OPCODE_NOP, 0);
+	ib.ptr[5] = VPE_CMD_HEADER(VPE_CMD_OPCODE_NOP, 0);
+	ib.ptr[6] = VPE_CMD_HEADER(VPE_CMD_OPCODE_NOP, 0);
+	ib.ptr[7] = VPE_CMD_HEADER(VPE_CMD_OPCODE_NOP, 0);
+	ib.length_dw = 8;
+
+	ret = amdgpu_ib_schedule(ring, 1, &ib, NULL, &f);
+	if (ret)
+		goto err1;
+
+	ret = dma_fence_wait_timeout(f, false, timeout);
+	if (ret <= 0) {
+		ret = ret ? : -ETIMEDOUT;
+		goto err1;
+	}
+
+	ret = (le32_to_cpu(adev->wb.wb[index]) == test_pattern) ? 0 : -EINVAL;
+
+err1:
+	amdgpu_ib_free(adev, &ib, NULL);
+	dma_fence_put(f);
+err0:
+	amdgpu_device_wb_free(adev, index);
+
+	return ret;
+}
+
+static void vpe_ring_begin_use(struct amdgpu_ring *ring)
+{
+	struct amdgpu_device *adev = ring->adev;
+	struct amdgpu_vpe *vpe = &adev->vpe;
+
+	cancel_delayed_work_sync(&adev->vpe.idle_work);
+
+	/* Power on VPE and notify VPE of new context  */
+	if (!vpe->context_started) {
+		uint32_t context_notify;
+
+		/* Power on VPE */
+		amdgpu_device_ip_set_powergating_state(adev, AMD_IP_BLOCK_TYPE_VPE, AMD_PG_STATE_UNGATE);
+
+		/* Indicates that a job from a new context has been submitted. */
+		context_notify = RREG32(vpe_get_reg_offset(vpe, 0, vpe->regs.context_indicator));
+		if ((context_notify & 0x1) == 0)
+			context_notify |= 0x1;
+		else
+			context_notify &= ~(0x1);
+		WREG32(vpe_get_reg_offset(vpe, 0, vpe->regs.context_indicator), context_notify);
+		vpe->context_started = true;
+	}
+}
+
+static void vpe_ring_end_use(struct amdgpu_ring *ring)
+{
+	struct amdgpu_device *adev = ring->adev;
+
+	schedule_delayed_work(&adev->vpe.idle_work, VPE_IDLE_TIMEOUT);
+}
+
+static const struct amdgpu_ring_funcs vpe_ring_funcs = {
+	.type = AMDGPU_RING_TYPE_VPE,
+	.align_mask = 0xf,
+	.nop = VPE_CMD_HEADER(VPE_CMD_OPCODE_NOP, 0),
+	.support_64bit_ptrs = true,
+	.get_rptr = vpe_ring_get_rptr,
+	.get_wptr = vpe_ring_get_wptr,
+	.set_wptr = vpe_ring_set_wptr,
+	.emit_frame_size =
+		5 + /* vpe_ring_init_cond_exec */
+		6 + /* vpe_ring_emit_pipeline_sync */
+		10 + 10 + 10 + /* vpe_ring_emit_fence */
+		/* vpe_ring_emit_vm_flush */
+		SOC15_FLUSH_GPU_TLB_NUM_WREG * 3 +
+		SOC15_FLUSH_GPU_TLB_NUM_REG_WAIT * 6,
+	.emit_ib_size = 7 + 6,
+	.emit_ib = vpe_ring_emit_ib,
+	.emit_pipeline_sync = vpe_ring_emit_pipeline_sync,
+	.emit_fence = vpe_ring_emit_fence,
+	.emit_vm_flush = vpe_ring_emit_vm_flush,
+	.emit_wreg = vpe_ring_emit_wreg,
+	.emit_reg_wait = vpe_ring_emit_reg_wait,
+	.emit_reg_write_reg_wait = amdgpu_ring_emit_reg_write_reg_wait_helper,
+	.insert_nop = vpe_ring_insert_nop,
+	.pad_ib = amdgpu_ring_generic_pad_ib,
+	.test_ring = vpe_ring_test_ring,
+	.test_ib = vpe_ring_test_ib,
+	.init_cond_exec = vpe_ring_init_cond_exec,
+	.preempt_ib = vpe_ring_preempt_ib,
+	.begin_use = vpe_ring_begin_use,
+	.end_use = vpe_ring_end_use,
+};
+
+static void vpe_set_ring_funcs(struct amdgpu_device *adev)
+{
+	adev->vpe.ring.funcs = &vpe_ring_funcs;
+}
+
+const struct amd_ip_funcs vpe_ip_funcs = {
+	.name = "vpe_v6_1",
+	.early_init = vpe_early_init,
+	.late_init = NULL,
+	.sw_init = vpe_sw_init,
+	.sw_fini = vpe_sw_fini,
+	.hw_init = vpe_hw_init,
+	.hw_fini = vpe_hw_fini,
+	.suspend = vpe_suspend,
+	.resume = vpe_resume,
+	.soft_reset = NULL,
+	.set_clockgating_state = vpe_set_clockgating_state,
+	.set_powergating_state = vpe_set_powergating_state,
+};
+
+const struct amdgpu_ip_block_version vpe_v6_1_ip_block = {
+	.type = AMD_IP_BLOCK_TYPE_VPE,
+	.major = 6,
+	.minor = 1,
+	.rev = 0,
+	.funcs = &vpe_ip_funcs,
+};