drm/amdgpu/gfx8: add support kernel interface queue(KIQ)

KIQ is queue-memory based initialization method: setup KIQ queue
firstly, then send command to KIQ to setup other queues, without
accessing registers.

For virtualization, need KIQ to access virtual function registers
when running on guest mode.

V2: use amdgpu_bo_create/free_kernel to allocate BO.

Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Signed-off-by: Xiangliang Yu <Xiangliang.Yu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

3 files changed, 620 insertions, 2 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index e8fbd7a791d3..b5ad548e2503 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -183,6 +183,11 @@ enum amdgpu_thermal_irq {
         AMDGPU_THERMAL_IRQ_LAST
 };
 
+enum amdgpu_kiq_irq {
+        AMDGPU_CP_KIQ_IRQ_DRIVER0 = 0,
+        AMDGPU_CP_KIQ_IRQ_LAST
+};
+
 int amdgpu_set_clockgating_state(struct amdgpu_device *adev,
                                   enum amd_ip_block_type block_type,
                                   enum amd_clockgating_state state);
@@ -775,6 +780,13 @@ struct amdgpu_mec {
         u32 num_queue;
 };
 
+struct amdgpu_kiq {
+        u64                     eop_gpu_addr;
+        struct amdgpu_bo        *eop_obj;
+        struct amdgpu_ring      ring;
+        struct amdgpu_irq_src   irq;
+};
+
 /*
  * GPU scratch registers structures, functions & helpers
  */
@@ -850,6 +862,7 @@ struct amdgpu_gfx {
         struct amdgpu_gca_config        config;
         struct amdgpu_rlc               rlc;
         struct amdgpu_mec               mec;
+        struct amdgpu_kiq               kiq;
         struct amdgpu_scratch           scratch;
         const struct firmware           *me_fw; /* ME firmware */
         uint32_t                        me_fw_version;
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
index 71ab1eb47909..d604ba37541f 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
@@ -1367,6 +1367,42 @@ static void gfx_v8_0_mec_fini(struct amdgpu_device *adev)
         }
 }
 
+static int gfx_v8_0_kiq_init_ring(struct amdgpu_device *adev,
+                                  struct amdgpu_ring *ring,
+                                  struct amdgpu_irq_src *irq)
+{
+        int r = 0;
+
+        ring->adev = NULL;
+        ring->ring_obj = NULL;
+        ring->use_doorbell = true;
+        ring->doorbell_index = AMDGPU_DOORBELL_KIQ;
+        if (adev->gfx.mec2_fw) {
+                ring->me = 2;
+                ring->pipe = 0;
+        } else {
+                ring->me = 1;
+                ring->pipe = 1;
+        }
+
+        irq->data = ring;
+        ring->queue = 0;
+        sprintf(ring->name, "kiq %d.%d.%d", ring->me, ring->pipe, ring->queue);
+        r = amdgpu_ring_init(adev, ring, 1024,
+                             irq, AMDGPU_CP_KIQ_IRQ_DRIVER0);
+        if (r)
+                dev_warn(adev->dev, "(%d) failed to init kiq ring\n", r);
+
+        return r;
+}
+
+static void gfx_v8_0_kiq_free_ring(struct amdgpu_ring *ring,
+                                   struct amdgpu_irq_src *irq)
+{
+        amdgpu_ring_fini(ring);
+        irq->data = NULL;
+}
+
 #define MEC_HPD_SIZE 2048
 
 static int gfx_v8_0_mec_init(struct amdgpu_device *adev)
@@ -1421,6 +1457,35 @@ static int gfx_v8_0_mec_init(struct amdgpu_device *adev)
         return 0;
 }
 
+static void gfx_v8_0_kiq_fini(struct amdgpu_device *adev)
+{
+        struct amdgpu_kiq *kiq = &adev->gfx.kiq;
+
+        amdgpu_bo_free_kernel(&kiq->eop_obj, &kiq->eop_gpu_addr, NULL);
+        kiq->eop_obj = NULL;
+}
+
+static int gfx_v8_0_kiq_init(struct amdgpu_device *adev)
+{
+        int r;
+        u32 *hpd;
+        struct amdgpu_kiq *kiq = &adev->gfx.kiq;
+
+        r = amdgpu_bo_create_kernel(adev, MEC_HPD_SIZE, PAGE_SIZE,
+                                    AMDGPU_GEM_DOMAIN_GTT, &kiq->eop_obj,
+                                    &kiq->eop_gpu_addr, (void **)&hpd);
+        if (r) {
+                dev_warn(adev->dev, "failed to create KIQ bo (%d).\n", r);
+                return r;
+        }
+
+        memset(hpd, 0, MEC_HPD_SIZE);
+
+        amdgpu_bo_kunmap(kiq->eop_obj);
+
+        return 0;
+}
+
 static const u32 vgpr_init_compute_shader[] =
 {
         0x7e000209, 0x7e020208,
@@ -1997,8 +2062,14 @@ static int gfx_v8_0_sw_init(void *handle)
 {
         int i, r;
         struct amdgpu_ring *ring;
+        struct amdgpu_kiq *kiq;
         struct amdgpu_device *adev = (struct amdgpu_device *)handle;
 
+        /* KIQ event */
+        r = amdgpu_irq_add_id(adev, 178, &adev->gfx.kiq.irq);
+        if (r)
+                return r;
+
         /* EOP Event */
         r = amdgpu_irq_add_id(adev, 181, &adev->gfx.eop_irq);
         if (r)
@@ -2036,6 +2107,17 @@ static int gfx_v8_0_sw_init(void *handle)
                 return r;
         }
 
+        r = gfx_v8_0_kiq_init(adev);
+        if (r) {
+                DRM_ERROR("Failed to init KIQ BOs!\n");
+                return r;
+        }
+
+        kiq = &adev->gfx.kiq;
+        r = gfx_v8_0_kiq_init_ring(adev, &kiq->ring, &kiq->irq);
+        if (r)
+                return r;
+
         /* set up the gfx ring */
         for (i = 0; i < adev->gfx.num_gfx_rings; i++) {
                 ring = &adev->gfx.gfx_ring[i];
@@ -2119,7 +2201,9 @@ static int gfx_v8_0_sw_fini(void *handle)
                 amdgpu_ring_fini(&adev->gfx.gfx_ring[i]);
         for (i = 0; i < adev->gfx.num_compute_rings; i++)
                 amdgpu_ring_fini(&adev->gfx.compute_ring[i]);
+        gfx_v8_0_kiq_free_ring(&adev->gfx.kiq.ring, &adev->gfx.kiq.irq);
 
+        gfx_v8_0_kiq_fini(adev);
         gfx_v8_0_mec_fini(adev);
         gfx_v8_0_rlc_fini(adev);
         gfx_v8_0_free_microcode(adev);
@@ -4495,6 +4579,393 @@ static void gfx_v8_0_cp_compute_fini(struct amdgpu_device *adev)
         }
 }
 
+/* KIQ functions */
+static void gfx_v8_0_kiq_setting(struct amdgpu_ring *ring)
+{
+        uint32_t tmp;
+        struct amdgpu_device *adev = ring->adev;
+
+        /* tell RLC which is KIQ queue */
+        tmp = RREG32(mmRLC_CP_SCHEDULERS);
+        tmp &= 0xffffff00;
+        tmp |= (ring->me << 5) | (ring->pipe << 3) | (ring->queue);
+        WREG32(mmRLC_CP_SCHEDULERS, tmp);
+        tmp |= 0x80;
+        WREG32(mmRLC_CP_SCHEDULERS, tmp);
+}
+
+static void gfx_v8_0_kiq_enable(struct amdgpu_ring *ring)
+{
+        amdgpu_ring_alloc(ring, 8);
+        /* set resources */
+        amdgpu_ring_write(ring, PACKET3(PACKET3_SET_RESOURCES, 6));
+        amdgpu_ring_write(ring, 0);     /* vmid_mask:0 queue_type:0 (KIQ) */
+        amdgpu_ring_write(ring, 0x000000FF);    /* queue mask lo */
+        amdgpu_ring_write(ring, 0);     /* queue mask hi */
+        amdgpu_ring_write(ring, 0);     /* gws mask lo */
+        amdgpu_ring_write(ring, 0);     /* gws mask hi */
+        amdgpu_ring_write(ring, 0);     /* oac mask */
+        amdgpu_ring_write(ring, 0);     /* gds heap base:0, gds heap size:0 */
+        amdgpu_ring_commit(ring);
+        udelay(50);
+}
+
+static void gfx_v8_0_map_queue_enable(struct amdgpu_ring *kiq_ring,
+                                   struct amdgpu_ring *ring)
+{
+        struct amdgpu_device *adev = kiq_ring->adev;
+        uint64_t mqd_addr, wptr_addr;
+
+        mqd_addr = amdgpu_bo_gpu_offset(ring->mqd_obj);
+        wptr_addr = adev->wb.gpu_addr + (ring->wptr_offs * 4);
+        amdgpu_ring_alloc(kiq_ring, 8);
+
+        amdgpu_ring_write(kiq_ring, PACKET3(PACKET3_MAP_QUEUES, 5));
+        /* Q_sel:0, vmid:0, vidmem: 1, engine:0, num_Q:1*/
+        amdgpu_ring_write(kiq_ring, 0x21010000);
+        amdgpu_ring_write(kiq_ring, (ring->doorbell_index << 2) |
+                        (ring->queue << 26) |
+                        (ring->pipe << 29) |
+                        ((ring->me == 1 ? 0 : 1) << 31)); /* doorbell */
+        amdgpu_ring_write(kiq_ring, lower_32_bits(mqd_addr));
+        amdgpu_ring_write(kiq_ring, upper_32_bits(mqd_addr));
+        amdgpu_ring_write(kiq_ring, lower_32_bits(wptr_addr));
+        amdgpu_ring_write(kiq_ring, upper_32_bits(wptr_addr));
+        amdgpu_ring_commit(kiq_ring);
+        udelay(50);
+}
+
+static int gfx_v8_0_mqd_init(struct amdgpu_device *adev,
+                             struct vi_mqd *mqd,
+                             uint64_t mqd_gpu_addr,
+                             uint64_t eop_gpu_addr,
+                             struct amdgpu_ring *ring)
+{
+        uint64_t hqd_gpu_addr, wb_gpu_addr, eop_base_addr;
+        uint32_t tmp;
+
+        mqd->header = 0xC0310800;
+        mqd->compute_pipelinestat_enable = 0x00000001;
+        mqd->compute_static_thread_mgmt_se0 = 0xffffffff;
+        mqd->compute_static_thread_mgmt_se1 = 0xffffffff;
+        mqd->compute_static_thread_mgmt_se2 = 0xffffffff;
+        mqd->compute_static_thread_mgmt_se3 = 0xffffffff;
+        mqd->compute_misc_reserved = 0x00000003;
+
+        eop_base_addr = eop_gpu_addr >> 8;
+        mqd->cp_hqd_eop_base_addr_lo = eop_base_addr;
+        mqd->cp_hqd_eop_base_addr_hi = upper_32_bits(eop_base_addr);
+
+        /* set the EOP size, register value is 2^(EOP_SIZE+1) dwords */
+        tmp = RREG32(mmCP_HQD_EOP_CONTROL);
+        tmp = REG_SET_FIELD(tmp, CP_HQD_EOP_CONTROL, EOP_SIZE,
+                        (order_base_2(MEC_HPD_SIZE / 4) - 1));
+
+        mqd->cp_hqd_eop_control = tmp;
+
+        /* enable doorbell? */
+        tmp = RREG32(mmCP_HQD_PQ_DOORBELL_CONTROL);
+
+        if (ring->use_doorbell)
+                tmp = REG_SET_FIELD(tmp, CP_HQD_PQ_DOORBELL_CONTROL,
+                                         DOORBELL_EN, 1);
+        else
+                tmp = REG_SET_FIELD(tmp, CP_HQD_PQ_DOORBELL_CONTROL,
+                                         DOORBELL_EN, 0);
+
+        mqd->cp_hqd_pq_doorbell_control = tmp;
+
+        /* disable the queue if it's active */
+        mqd->cp_hqd_dequeue_request = 0;
+        mqd->cp_hqd_pq_rptr = 0;
+        mqd->cp_hqd_pq_wptr = 0;
+
+        /* set the pointer to the MQD */
+        mqd->cp_mqd_base_addr_lo = mqd_gpu_addr & 0xfffffffc;
+        mqd->cp_mqd_base_addr_hi = upper_32_bits(mqd_gpu_addr);
+
+        /* set MQD vmid to 0 */
+        tmp = RREG32(mmCP_MQD_CONTROL);
+        tmp = REG_SET_FIELD(tmp, CP_MQD_CONTROL, VMID, 0);
+        mqd->cp_mqd_control = tmp;
+
+        /* set the pointer to the HQD, this is similar CP_RB0_BASE/_HI */
+        hqd_gpu_addr = ring->gpu_addr >> 8;
+        mqd->cp_hqd_pq_base_lo = hqd_gpu_addr;
+        mqd->cp_hqd_pq_base_hi = upper_32_bits(hqd_gpu_addr);
+
+        /* set up the HQD, this is similar to CP_RB0_CNTL */
+        tmp = RREG32(mmCP_HQD_PQ_CONTROL);
+        tmp = REG_SET_FIELD(tmp, CP_HQD_PQ_CONTROL, QUEUE_SIZE,
+                            (order_base_2(ring->ring_size / 4) - 1));
+        tmp = REG_SET_FIELD(tmp, CP_HQD_PQ_CONTROL, RPTR_BLOCK_SIZE,
+                        ((order_base_2(AMDGPU_GPU_PAGE_SIZE / 4) - 1) << 8));
+#ifdef __BIG_ENDIAN
+        tmp = REG_SET_FIELD(tmp, CP_HQD_PQ_CONTROL, ENDIAN_SWAP, 1);
+#endif
+        tmp = REG_SET_FIELD(tmp, CP_HQD_PQ_CONTROL, UNORD_DISPATCH, 0);
+        tmp = REG_SET_FIELD(tmp, CP_HQD_PQ_CONTROL, ROQ_PQ_IB_FLIP, 0);
+        tmp = REG_SET_FIELD(tmp, CP_HQD_PQ_CONTROL, PRIV_STATE, 1);
+        tmp = REG_SET_FIELD(tmp, CP_HQD_PQ_CONTROL, KMD_QUEUE, 1);
+        mqd->cp_hqd_pq_control = tmp;
+
+        /* set the wb address whether it's enabled or not */
+        wb_gpu_addr = adev->wb.gpu_addr + (ring->rptr_offs * 4);
+        mqd->cp_hqd_pq_rptr_report_addr_lo = wb_gpu_addr & 0xfffffffc;
+        mqd->cp_hqd_pq_rptr_report_addr_hi =
+                upper_32_bits(wb_gpu_addr) & 0xffff;
+
+        /* only used if CP_PQ_WPTR_POLL_CNTL.CP_PQ_WPTR_POLL_CNTL__EN_MASK=1 */
+        wb_gpu_addr = adev->wb.gpu_addr + (ring->wptr_offs * 4);
+        mqd->cp_hqd_pq_wptr_poll_addr_lo = wb_gpu_addr & 0xfffffffc;
+        mqd->cp_hqd_pq_wptr_poll_addr_hi = upper_32_bits(wb_gpu_addr) & 0xffff;
+
+        tmp = 0;
+        /* enable the doorbell if requested */
+        if (ring->use_doorbell) {
+                tmp = RREG32(mmCP_HQD_PQ_DOORBELL_CONTROL);
+                tmp = REG_SET_FIELD(tmp, CP_HQD_PQ_DOORBELL_CONTROL,
+                                DOORBELL_OFFSET, ring->doorbell_index);
+
+                tmp = REG_SET_FIELD(tmp, CP_HQD_PQ_DOORBELL_CONTROL,
+                                         DOORBELL_EN, 1);
+                tmp = REG_SET_FIELD(tmp, CP_HQD_PQ_DOORBELL_CONTROL,
+                                         DOORBELL_SOURCE, 0);
+                tmp = REG_SET_FIELD(tmp, CP_HQD_PQ_DOORBELL_CONTROL,
+                                         DOORBELL_HIT, 0);
+        }
+
+        mqd->cp_hqd_pq_doorbell_control = tmp;
+
+        /* reset read and write pointers, similar to CP_RB0_WPTR/_RPTR */
+        ring->wptr = 0;
+        mqd->cp_hqd_pq_wptr = ring->wptr;
+        mqd->cp_hqd_pq_rptr = RREG32(mmCP_HQD_PQ_RPTR);
+
+        /* set the vmid for the queue */
+        mqd->cp_hqd_vmid = 0;
+
+        tmp = RREG32(mmCP_HQD_PERSISTENT_STATE);
+        tmp = REG_SET_FIELD(tmp, CP_HQD_PERSISTENT_STATE, PRELOAD_SIZE, 0x53);
+        mqd->cp_hqd_persistent_state = tmp;
+
+        /* activate the queue */
+        mqd->cp_hqd_active = 1;
+
+        return 0;
+}
+
+static int gfx_v8_0_kiq_init_register(struct amdgpu_device *adev,
+                                      struct vi_mqd *mqd,
+                                      struct amdgpu_ring *ring)
+{
+        uint32_t tmp;
+        int j;
+
+        /* disable wptr polling */
+        tmp = RREG32(mmCP_PQ_WPTR_POLL_CNTL);
+        tmp = REG_SET_FIELD(tmp, CP_PQ_WPTR_POLL_CNTL, EN, 0);
+        WREG32(mmCP_PQ_WPTR_POLL_CNTL, tmp);
+
+        WREG32(mmCP_HQD_EOP_BASE_ADDR, mqd->cp_hqd_eop_base_addr_lo);
+        WREG32(mmCP_HQD_EOP_BASE_ADDR_HI, mqd->cp_hqd_eop_base_addr_hi);
+
+        /* set the EOP size, register value is 2^(EOP_SIZE+1) dwords */
+        WREG32(mmCP_HQD_EOP_CONTROL, mqd->cp_hqd_eop_control);
+
+        /* enable doorbell? */
+        WREG32(mmCP_HQD_PQ_DOORBELL_CONTROL, mqd->cp_hqd_pq_doorbell_control);
+
+        /* disable the queue if it's active */
+        if (RREG32(mmCP_HQD_ACTIVE) & 1) {
+                WREG32(mmCP_HQD_DEQUEUE_REQUEST, 1);
+                for (j = 0; j < adev->usec_timeout; j++) {
+                        if (!(RREG32(mmCP_HQD_ACTIVE) & 1))
+                                break;
+                        udelay(1);
+                }
+                WREG32(mmCP_HQD_DEQUEUE_REQUEST, mqd->cp_hqd_dequeue_request);
+                WREG32(mmCP_HQD_PQ_RPTR, mqd->cp_hqd_pq_rptr);
+                WREG32(mmCP_HQD_PQ_WPTR, mqd->cp_hqd_pq_wptr);
+        }
+
+        /* set the pointer to the MQD */
+        WREG32(mmCP_MQD_BASE_ADDR, mqd->cp_mqd_base_addr_lo);
+        WREG32(mmCP_MQD_BASE_ADDR_HI, mqd->cp_mqd_base_addr_hi);
+
+        /* set MQD vmid to 0 */
+        WREG32(mmCP_MQD_CONTROL, mqd->cp_mqd_control);
+
+        /* set the pointer to the HQD, this is similar CP_RB0_BASE/_HI */
+        WREG32(mmCP_HQD_PQ_BASE, mqd->cp_hqd_pq_base_lo);
+        WREG32(mmCP_HQD_PQ_BASE_HI, mqd->cp_hqd_pq_base_hi);
+
+        /* set up the HQD, this is similar to CP_RB0_CNTL */
+        WREG32(mmCP_HQD_PQ_CONTROL, mqd->cp_hqd_pq_control);
+
+        /* set the wb address whether it's enabled or not */
+        WREG32(mmCP_HQD_PQ_RPTR_REPORT_ADDR,
+                                mqd->cp_hqd_pq_rptr_report_addr_lo);
+        WREG32(mmCP_HQD_PQ_RPTR_REPORT_ADDR_HI,
+                                mqd->cp_hqd_pq_rptr_report_addr_hi);
+
+        /* only used if CP_PQ_WPTR_POLL_CNTL.CP_PQ_WPTR_POLL_CNTL__EN_MASK=1 */
+        WREG32(mmCP_HQD_PQ_WPTR_POLL_ADDR, mqd->cp_hqd_pq_wptr_poll_addr_lo);
+        WREG32(mmCP_HQD_PQ_WPTR_POLL_ADDR_HI, mqd->cp_hqd_pq_wptr_poll_addr_hi);
+
+        /* enable the doorbell if requested */
+        if (ring->use_doorbell) {
+                if ((adev->asic_type == CHIP_CARRIZO) ||
+                                (adev->asic_type == CHIP_FIJI) ||
+                                (adev->asic_type == CHIP_STONEY)) {
+                        WREG32(mmCP_MEC_DOORBELL_RANGE_LOWER,
+                                                AMDGPU_DOORBELL_KIQ << 2);
+                        WREG32(mmCP_MEC_DOORBELL_RANGE_UPPER,
+                                                AMDGPU_DOORBELL_MEC_RING7 << 2);
+                }
+        }
+        WREG32(mmCP_HQD_PQ_DOORBELL_CONTROL, mqd->cp_hqd_pq_doorbell_control);
+
+        /* reset read and write pointers, similar to CP_RB0_WPTR/_RPTR */
+        WREG32(mmCP_HQD_PQ_WPTR, mqd->cp_hqd_pq_wptr);
+
+        /* set the vmid for the queue */
+        WREG32(mmCP_HQD_VMID, mqd->cp_hqd_vmid);
+
+        WREG32(mmCP_HQD_PERSISTENT_STATE, mqd->cp_hqd_persistent_state);
+
+        /* activate the queue */
+        WREG32(mmCP_HQD_ACTIVE, mqd->cp_hqd_active);
+
+        if (ring->use_doorbell) {
+                tmp = RREG32(mmCP_PQ_STATUS);
+                tmp = REG_SET_FIELD(tmp, CP_PQ_STATUS, DOORBELL_ENABLE, 1);
+                WREG32(mmCP_PQ_STATUS, tmp);
+        }
+
+        return 0;
+}
+
+static int gfx_v8_0_kiq_init_queue(struct amdgpu_ring *ring,
+                                   struct vi_mqd *mqd,
+                                   u64 mqd_gpu_addr)
+{
+        struct amdgpu_device *adev = ring->adev;
+        struct amdgpu_kiq *kiq = &adev->gfx.kiq;
+        uint64_t eop_gpu_addr;
+        bool is_kiq = false;
+
+        if (ring->funcs->type == AMDGPU_RING_TYPE_KIQ)
+                is_kiq = true;
+
+        if (is_kiq) {
+                eop_gpu_addr = kiq->eop_gpu_addr;
+                gfx_v8_0_kiq_setting(&kiq->ring);
+        } else
+                eop_gpu_addr = adev->gfx.mec.hpd_eop_gpu_addr +
+                                        ring->queue * MEC_HPD_SIZE;
+
+        mutex_lock(&adev->srbm_mutex);
+        vi_srbm_select(adev, ring->me, ring->pipe, ring->queue, 0);
+
+        gfx_v8_0_mqd_init(adev, mqd, mqd_gpu_addr, eop_gpu_addr, ring);
+
+        if (is_kiq)
+                gfx_v8_0_kiq_init_register(adev, mqd, ring);
+
+        vi_srbm_select(adev, 0, 0, 0, 0);
+        mutex_unlock(&adev->srbm_mutex);
+
+        if (is_kiq)
+                gfx_v8_0_kiq_enable(ring);
+        else
+                gfx_v8_0_map_queue_enable(&kiq->ring, ring);
+
+        return 0;
+}
+
+static void gfx_v8_0_kiq_free_queue(struct amdgpu_device *adev)
+{
+        struct amdgpu_ring *ring = NULL;
+        int i;
+
+        for (i = 0; i < adev->gfx.num_compute_rings; i++) {
+                ring = &adev->gfx.compute_ring[i];
+                amdgpu_bo_free_kernel(&ring->mqd_obj, NULL, NULL);
+                ring->mqd_obj = NULL;
+        }
+
+        ring = &adev->gfx.kiq.ring;
+        amdgpu_bo_free_kernel(&ring->mqd_obj, NULL, NULL);
+        ring->mqd_obj = NULL;
+}
+
+static int gfx_v8_0_kiq_setup_queue(struct amdgpu_device *adev,
+                                    struct amdgpu_ring *ring)
+{
+        struct vi_mqd *mqd;
+        u64 mqd_gpu_addr;
+        u32 *buf;
+        int r = 0;
+
+        r = amdgpu_bo_create_kernel(adev, sizeof(struct vi_mqd), PAGE_SIZE,
+                                    AMDGPU_GEM_DOMAIN_GTT, &ring->mqd_obj,
+                                    &mqd_gpu_addr, (void **)&buf);
+        if (r) {
+                dev_warn(adev->dev, "failed to create ring mqd ob (%d)", r);
+                return r;
+        }
+
+        /* init the mqd struct */
+        memset(buf, 0, sizeof(struct vi_mqd));
+        mqd = (struct vi_mqd *)buf;
+
+        r = gfx_v8_0_kiq_init_queue(ring, mqd, mqd_gpu_addr);
+        if (r)
+                return r;
+
+        amdgpu_bo_kunmap(ring->mqd_obj);
+
+        return 0;
+}
+
+static int gfx_v8_0_kiq_resume(struct amdgpu_device *adev)
+{
+        struct amdgpu_ring *ring = NULL;
+        int r, i;
+
+        ring = &adev->gfx.kiq.ring;
+        r = gfx_v8_0_kiq_setup_queue(adev, ring);
+        if (r)
+                return r;
+
+        for (i = 0; i < adev->gfx.num_compute_rings; i++) {
+                ring = &adev->gfx.compute_ring[i];
+                r = gfx_v8_0_kiq_setup_queue(adev, ring);
+                if (r)
+                        return r;
+        }
+
+        gfx_v8_0_cp_compute_enable(adev, true);
+
+        for (i = 0; i < adev->gfx.num_compute_rings; i++) {
+                ring = &adev->gfx.compute_ring[i];
+
+                ring->ready = true;
+                r = amdgpu_ring_test_ring(ring);
+                if (r)
+                        ring->ready = false;
+        }
+
+        ring = &adev->gfx.kiq.ring;
+        ring->ready = true;
+        r = amdgpu_ring_test_ring(ring);
+        if (r)
+                ring->ready = false;
+
+        return 0;
+}
+
 static int gfx_v8_0_cp_compute_resume(struct amdgpu_device *adev)
 {
         int r, i, j;
@@ -4795,7 +5266,10 @@ static int gfx_v8_0_cp_resume(struct amdgpu_device *adev)
         if (r)
                 return r;
 
-        r = gfx_v8_0_cp_compute_resume(adev);
+        if (amdgpu_sriov_vf(adev))
+                r = gfx_v8_0_kiq_resume(adev);
+        else
+                r = gfx_v8_0_cp_compute_resume(adev);
         if (r)
                 return r;
 
@@ -4834,6 +5308,7 @@ static int gfx_v8_0_hw_fini(void *handle)
         amdgpu_irq_put(adev, &adev->gfx.priv_reg_irq, 0);
         amdgpu_irq_put(adev, &adev->gfx.priv_inst_irq, 0);
         if (amdgpu_sriov_vf(adev)) {
+                gfx_v8_0_kiq_free_queue(adev);
                 pr_debug("For SRIOV client, shouldn't do anything.\n");
                 return 0;
         }
@@ -5930,7 +6405,8 @@ static void gfx_v8_0_ring_emit_hdp_flush(struct amdgpu_ring *ring)
 {
         u32 ref_and_mask, reg_mem_engine;
 
-        if (ring->funcs->type == AMDGPU_RING_TYPE_COMPUTE) {
+        if ((ring->funcs->type == AMDGPU_RING_TYPE_COMPUTE) ||
+            (ring->funcs->type == AMDGPU_RING_TYPE_KIQ)) {
                 switch (ring->me) {
                 case 1:
                         ref_and_mask = GPU_HDP_FLUSH_DONE__CP2_MASK << ring->pipe;
@@ -6143,6 +6619,32 @@ static void gfx_v8_0_ring_emit_fence_compute(struct amdgpu_ring *ring,
         amdgpu_ring_write(ring, upper_32_bits(seq));
 }
 
+static void gfx_v8_0_ring_emit_fence_kiq(struct amdgpu_ring *ring, u64 addr,
+                                         u64 seq, unsigned int flags)
+{
+        /* we only allocate 32bit for each seq wb address */
+        if (flags & AMDGPU_FENCE_FLAG_64BIT)
+                BUG();
+
+        /* write fence seq to the "addr" */
+        amdgpu_ring_write(ring, PACKET3(PACKET3_WRITE_DATA, 3));
+        amdgpu_ring_write(ring, (WRITE_DATA_ENGINE_SEL(0) |
+                                 WRITE_DATA_DST_SEL(5) | WR_CONFIRM));
+        amdgpu_ring_write(ring, lower_32_bits(addr));
+        amdgpu_ring_write(ring, upper_32_bits(addr));
+        amdgpu_ring_write(ring, lower_32_bits(seq));
+
+        if (flags & AMDGPU_FENCE_FLAG_INT) {
+                /* set register to trigger INT */
+                amdgpu_ring_write(ring, PACKET3(PACKET3_WRITE_DATA, 3));
+                amdgpu_ring_write(ring, (WRITE_DATA_ENGINE_SEL(0) |
+                                         WRITE_DATA_DST_SEL(0) | WR_CONFIRM));
+                amdgpu_ring_write(ring, mmCPC_INT_STATUS);
+                amdgpu_ring_write(ring, 0);
+                amdgpu_ring_write(ring, 0x20000000); /* src_id is 178 */
+        }
+}
+
 static void gfx_v8_ring_emit_sb(struct amdgpu_ring *ring)
 {
         amdgpu_ring_write(ring, PACKET3(PACKET3_SWITCH_BUFFER, 0));
@@ -6324,6 +6826,72 @@ static int gfx_v8_0_priv_inst_irq(struct amdgpu_device *adev,
         return 0;
 }
 
+static int gfx_v8_0_kiq_set_interrupt_state(struct amdgpu_device *adev,
+                                            struct amdgpu_irq_src *src,
+                                            unsigned int type,
+                                            enum amdgpu_interrupt_state state)
+{
+        uint32_t tmp, target;
+        struct amdgpu_ring *ring = (struct amdgpu_ring *)src->data;
+
+        BUG_ON(!ring || (ring->funcs->type != AMDGPU_RING_TYPE_KIQ));
+
+        if (ring->me == 1)
+                target = mmCP_ME1_PIPE0_INT_CNTL;
+        else
+                target = mmCP_ME2_PIPE0_INT_CNTL;
+        target += ring->pipe;
+
+        switch (type) {
+        case AMDGPU_CP_KIQ_IRQ_DRIVER0:
+                if (state == AMDGPU_IRQ_STATE_DISABLE) {
+                        tmp = RREG32(mmCPC_INT_CNTL);
+                        tmp = REG_SET_FIELD(tmp, CPC_INT_CNTL,
+                                                 GENERIC2_INT_ENABLE, 0);
+                        WREG32(mmCPC_INT_CNTL, tmp);
+
+                        tmp = RREG32(target);
+                        tmp = REG_SET_FIELD(tmp, CP_ME2_PIPE0_INT_CNTL,
+                                                 GENERIC2_INT_ENABLE, 0);
+                        WREG32(target, tmp);
+                } else {
+                        tmp = RREG32(mmCPC_INT_CNTL);
+                        tmp = REG_SET_FIELD(tmp, CPC_INT_CNTL,
+                                                 GENERIC2_INT_ENABLE, 1);
+                        WREG32(mmCPC_INT_CNTL, tmp);
+
+                        tmp = RREG32(target);
+                        tmp = REG_SET_FIELD(tmp, CP_ME2_PIPE0_INT_CNTL,
+                                                 GENERIC2_INT_ENABLE, 1);
+                        WREG32(target, tmp);
+                }
+                break;
+        default:
+                BUG(); /* kiq only support GENERIC2_INT now */
+                break;
+        }
+        return 0;
+}
+
+static int gfx_v8_0_kiq_irq(struct amdgpu_device *adev,
+                            struct amdgpu_irq_src *source,
+                            struct amdgpu_iv_entry *entry)
+{
+        u8 me_id, pipe_id, queue_id;
+        struct amdgpu_ring *ring = (struct amdgpu_ring *)source->data;
+
+        BUG_ON(!ring || (ring->funcs->type != AMDGPU_RING_TYPE_KIQ));
+
+        me_id = (entry->ring_id & 0x0c) >> 2;
+        pipe_id = (entry->ring_id & 0x03) >> 0;
+        queue_id = (entry->ring_id & 0x70) >> 4;
+        DRM_DEBUG("IH: CPC GENERIC2_INT, me:%d, pipe:%d, queue:%d\n",
+                   me_id, pipe_id, queue_id);
+
+        amdgpu_fence_process(ring);
+        return 0;
+}
+
 static const struct amd_ip_funcs gfx_v8_0_ip_funcs = {
         .name = "gfx_v8_0",
         .early_init = gfx_v8_0_early_init,
@@ -6404,10 +6972,37 @@ static const struct amdgpu_ring_funcs gfx_v8_0_ring_funcs_compute = {
         .pad_ib = amdgpu_ring_generic_pad_ib,
 };
 
+static const struct amdgpu_ring_funcs gfx_v8_0_ring_funcs_kiq = {
+        .type = AMDGPU_RING_TYPE_KIQ,
+        .align_mask = 0xff,
+        .nop = PACKET3(PACKET3_NOP, 0x3FFF),
+        .get_rptr = gfx_v8_0_ring_get_rptr,
+        .get_wptr = gfx_v8_0_ring_get_wptr_compute,
+        .set_wptr = gfx_v8_0_ring_set_wptr_compute,
+        .emit_frame_size =
+                20 + /* gfx_v8_0_ring_emit_gds_switch */
+                7 + /* gfx_v8_0_ring_emit_hdp_flush */
+                5 + /* gfx_v8_0_ring_emit_hdp_invalidate */
+                7 + /* gfx_v8_0_ring_emit_pipeline_sync */
+                17 + /* gfx_v8_0_ring_emit_vm_flush */
+                7 + 7 + 7, /* gfx_v8_0_ring_emit_fence_kiq x3 for user fence, vm fence */
+        .emit_ib_size = 4, /* gfx_v8_0_ring_emit_ib_compute */
+        .emit_ib = gfx_v8_0_ring_emit_ib_compute,
+        .emit_fence = gfx_v8_0_ring_emit_fence_kiq,
+        .emit_hdp_flush = gfx_v8_0_ring_emit_hdp_flush,
+        .emit_hdp_invalidate = gfx_v8_0_ring_emit_hdp_invalidate,
+        .test_ring = gfx_v8_0_ring_test_ring,
+        .test_ib = gfx_v8_0_ring_test_ib,
+        .insert_nop = amdgpu_ring_insert_nop,
+        .pad_ib = amdgpu_ring_generic_pad_ib,
+};
+
 static void gfx_v8_0_set_ring_funcs(struct amdgpu_device *adev)
 {
         int i;
 
+        adev->gfx.kiq.ring.funcs = &gfx_v8_0_ring_funcs_kiq;
+
         for (i = 0; i < adev->gfx.num_gfx_rings; i++)
                 adev->gfx.gfx_ring[i].funcs = &gfx_v8_0_ring_funcs_gfx;
 
@@ -6430,6 +7025,11 @@ static const struct amdgpu_irq_src_funcs gfx_v8_0_priv_inst_irq_funcs = {
         .process = gfx_v8_0_priv_inst_irq,
 };
 
+static const struct amdgpu_irq_src_funcs gfx_v8_0_kiq_irq_funcs = {
+        .set = gfx_v8_0_kiq_set_interrupt_state,
+        .process = gfx_v8_0_kiq_irq,
+};
+
 static void gfx_v8_0_set_irq_funcs(struct amdgpu_device *adev)
 {
         adev->gfx.eop_irq.num_types = AMDGPU_CP_IRQ_LAST;
@@ -6440,6 +7040,9 @@ static void gfx_v8_0_set_irq_funcs(struct amdgpu_device *adev)
 
         adev->gfx.priv_inst_irq.num_types = 1;
         adev->gfx.priv_inst_irq.funcs = &gfx_v8_0_priv_inst_irq_funcs;
+
+        adev->gfx.kiq.irq.num_types = AMDGPU_CP_KIQ_IRQ_LAST;
+        adev->gfx.kiq.irq.funcs = &gfx_v8_0_kiq_irq_funcs;
 }
 
 static void gfx_v8_0_set_rlc_funcs(struct amdgpu_device *adev)
diff --git a/drivers/gpu/drm/amd/amdgpu/vid.h b/drivers/gpu/drm/amd/amdgpu/vid.h
index 11746f22d0c5..7a3863a45f0a 100644
--- a/drivers/gpu/drm/amd/amdgpu/vid.h
+++ b/drivers/gpu/drm/amd/amdgpu/vid.h
@@ -360,6 +360,8 @@
 #define PACKET3_WAIT_ON_CE_COUNTER                      0x86
 #define PACKET3_WAIT_ON_DE_COUNTER_DIFF                 0x88
 #define PACKET3_SWITCH_BUFFER                           0x8B
+#define PACKET3_SET_RESOURCES                           0xA0
+#define PACKET3_MAP_QUEUES                              0xA2
 
 #define VCE_CMD_NO_OP           0x00000000
 #define VCE_CMD_END             0x00000001