drm/amdgpu/vcn: add common vcn sofware ring decode

Add common vcn sofware ring decode.

v2: fixed compiling error

Signed-off-by: James Zhu <James.Zhu@amd.com>
Reviewed-by: Christian Koenig <Christian.Koenig@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

3 files changed, 130 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/Makefile b/drivers/gpu/drm/amd/amdgpu/Makefile
index de7abc7c371f..fdc2b2e84945 100644
--- a/drivers/gpu/drm/amd/amdgpu/Makefile
+++ b/drivers/gpu/drm/amd/amdgpu/Makefile
@@ -167,6 +167,7 @@ amdgpu-y += \
 # add VCN and JPEG block
 amdgpu-y += \
 	amdgpu_vcn.o \
+	vcn_sw_ring.o \
 	vcn_v1_0.o \
 	vcn_v2_0.o \
 	vcn_v2_5.o \
diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_sw_ring.c b/drivers/gpu/drm/amd/amdgpu/vcn_sw_ring.c
new file mode 100644
index 000000000000..f4f97f0f5c64
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/vcn_sw_ring.c
@@ -0,0 +1,85 @@
+/*
+ * 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 "amdgpu.h"
+
+void vcn_dec_sw_ring_emit_fence(struct amdgpu_ring *ring, u64 addr,
+	u64 seq, uint32_t flags)
+{
+	WARN_ON(flags & AMDGPU_FENCE_FLAG_64BIT);
+
+	amdgpu_ring_write(ring, VCN_DEC_SW_CMD_FENCE);
+	amdgpu_ring_write(ring, addr);
+	amdgpu_ring_write(ring, upper_32_bits(addr));
+	amdgpu_ring_write(ring, seq);
+	amdgpu_ring_write(ring, VCN_DEC_SW_CMD_TRAP);
+}
+
+void vcn_dec_sw_ring_insert_end(struct amdgpu_ring *ring)
+{
+	amdgpu_ring_write(ring, VCN_DEC_SW_CMD_END);
+}
+
+void vcn_dec_sw_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);
+
+	amdgpu_ring_write(ring, VCN_DEC_SW_CMD_IB);
+	amdgpu_ring_write(ring, vmid);
+	amdgpu_ring_write(ring, lower_32_bits(ib->gpu_addr));
+	amdgpu_ring_write(ring, upper_32_bits(ib->gpu_addr));
+	amdgpu_ring_write(ring, ib->length_dw);
+}
+
+void vcn_dec_sw_ring_emit_reg_wait(struct amdgpu_ring *ring, uint32_t reg,
+	uint32_t val, uint32_t mask)
+{
+	amdgpu_ring_write(ring, VCN_DEC_SW_CMD_REG_WAIT);
+	amdgpu_ring_write(ring, reg << 2);
+	amdgpu_ring_write(ring, mask);
+	amdgpu_ring_write(ring, val);
+}
+
+void vcn_dec_sw_ring_emit_vm_flush(struct amdgpu_ring *ring,
+	uint32_t vmid, uint64_t pd_addr)
+{
+	struct amdgpu_vmhub *hub = &ring->adev->vmhub[ring->funcs->vmhub];
+	uint32_t data0, data1, mask;
+
+	pd_addr = amdgpu_gmc_emit_flush_gpu_tlb(ring, vmid, pd_addr);
+
+	/* wait for register write */
+	data0 = hub->ctx0_ptb_addr_lo32 + vmid * hub->ctx_addr_distance;
+	data1 = lower_32_bits(pd_addr);
+	mask = 0xffffffff;
+	vcn_dec_sw_ring_emit_reg_wait(ring, data0, data1, mask);
+}
+
+void vcn_dec_sw_ring_emit_wreg(struct amdgpu_ring *ring, uint32_t reg,
+	uint32_t val)
+{
+	amdgpu_ring_write(ring, VCN_DEC_SW_CMD_REG_WRITE);
+	amdgpu_ring_write(ring,	reg << 2);
+	amdgpu_ring_write(ring, val);
+}
diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_sw_ring.h b/drivers/gpu/drm/amd/amdgpu/vcn_sw_ring.h
new file mode 100644
index 000000000000..7e775725f120
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/vcn_sw_ring.h
@@ -0,0 +1,44 @@
+/*
+ * 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.
+ *
+ */
+
+#ifndef __VCN_SW_RING_H__
+#define __VCN_SW_RING_H__
+
+#define VCN_SW_RING_EMIT_FRAME_SIZE \
+		(4 + /* vcn_dec_sw_ring_emit_vm_flush */ \
+		5 + 5 + /* vcn_dec_sw_ring_emit_fence x2 vm fence */ \
+		1) /* vcn_dec_sw_ring_insert_end */
+
+void vcn_dec_sw_ring_emit_fence(struct amdgpu_ring *ring, u64 addr,
+	u64 seq, uint32_t flags);
+void vcn_dec_sw_ring_insert_end(struct amdgpu_ring *ring);
+void vcn_dec_sw_ring_emit_ib(struct amdgpu_ring *ring, struct amdgpu_job *job,
+	struct amdgpu_ib *ib, uint32_t flags);
+void vcn_dec_sw_ring_emit_reg_wait(struct amdgpu_ring *ring, uint32_t reg,
+	uint32_t val, uint32_t mask);
+void vcn_dec_sw_ring_emit_vm_flush(struct amdgpu_ring *ring,
+	uint32_t vmid, uint64_t pd_addr);
+void vcn_dec_sw_ring_emit_wreg(struct amdgpu_ring *ring, uint32_t reg,
+	uint32_t val);
+
+#endif /* __VCN_SW_RING_H__ */