[PATCH 2/3] drm/amdgpu: add the files of HDP v5.2 block

[Alex Deucher]

From: Xiaojian Du <Xiaojian.Du at amd.com>

This patch is to add the files of HDP v5.2 block.
HDP (Host Data Port) is the IP which handles
host access to VRAM via the PCI BAR.

Signed-off-by: Xiaojian Du <Xiaojian.Du at amd.com>
Reviewed-by: Huang Rui <ray.huang at amd.com>
Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/Makefile   |  2 +-
 drivers/gpu/drm/amd/amdgpu/hdp_v5_2.c | 45 +++++++++++++++++++++++++++
 drivers/gpu/drm/amd/amdgpu/hdp_v5_2.h | 31 ++++++++++++++++++
 3 files changed, 77 insertions(+), 1 deletion(-)
 create mode 100644 drivers/gpu/drm/amd/amdgpu/hdp_v5_2.c
 create mode 100644 drivers/gpu/drm/amd/amdgpu/hdp_v5_2.h

diff --git a/drivers/gpu/drm/amd/amdgpu/Makefile b/drivers/gpu/drm/amd/amdgpu/Makefile
index f2d64b156ba4..de7abc7c371f 100644
--- a/drivers/gpu/drm/amd/amdgpu/Makefile
+++ b/drivers/gpu/drm/amd/amdgpu/Makefile
@@ -75,7 +75,7 @@ amdgpu-y += \
 	vi.o mxgpu_vi.o nbio_v6_1.o soc15.o emu_soc.o mxgpu_ai.o nbio_v7_0.o vega10_reg_init.o \
 	vega20_reg_init.o nbio_v7_4.o nbio_v2_3.o nv.o arct_reg_init.o mxgpu_nv.o \
 	nbio_v7_2.o hdp_v4_0.o hdp_v5_0.o aldebaran_reg_init.o aldebaran.o soc21.o \
-	nbio_v4_3.o hdp_v6_0.o nbio_v7_7.o
+	nbio_v4_3.o hdp_v6_0.o nbio_v7_7.o hdp_v5_2.o
 
 # add DF block
 amdgpu-y += \
diff --git a/drivers/gpu/drm/amd/amdgpu/hdp_v5_2.c b/drivers/gpu/drm/amd/amdgpu/hdp_v5_2.c
new file mode 100644
index 000000000000..39a696cd45b5
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/hdp_v5_2.c
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2021 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"
+#include "amdgpu_atombios.h"
+#include "hdp_v5_2.h"
+
+#include "hdp/hdp_5_2_1_offset.h"
+#include "hdp/hdp_5_2_1_sh_mask.h"
+#include <uapi/linux/kfd_ioctl.h>
+
+static void hdp_v5_2_flush_hdp(struct amdgpu_device *adev,
+				struct amdgpu_ring *ring)
+{
+	if (!ring || !ring->funcs->emit_wreg)
+		WREG32_NO_KIQ((adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL) >> 2,
+			0);
+	else
+		amdgpu_ring_emit_wreg(ring,
+			(adev->rmmio_remap.reg_offset + KFD_MMIO_REMAP_HDP_MEM_FLUSH_CNTL) >> 2,
+			0);
+}
+
+const struct amdgpu_hdp_funcs hdp_v5_2_funcs = {
+	.flush_hdp = hdp_v5_2_flush_hdp,
+};
diff --git a/drivers/gpu/drm/amd/amdgpu/hdp_v5_2.h b/drivers/gpu/drm/amd/amdgpu/hdp_v5_2.h
new file mode 100644
index 000000000000..cb2abc0c80ee
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/hdp_v5_2.h
@@ -0,0 +1,31 @@
+/*
+ * Copyright 2021 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 __HDP_V5_2_H__
+#define __HDP_V5_2_H__
+
+#include "soc15_common.h"
+
+extern const struct amdgpu_hdp_funcs hdp_v5_2_funcs;
+
+#endif
-- 
2.35.1