drm/amdgpu: add lsdma block

Add Light SDMA (LSDMA) block and related function. LSDMA
is a small instance of SDMA mainly for kernel driver use.

Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

8 files changed, 134 insertions, 2 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/Makefile b/drivers/gpu/drm/amd/amdgpu/Makefile
index fdc2b2e84945..3e0e2eb7e235 100644
--- a/drivers/gpu/drm/amd/amdgpu/Makefile
+++ b/drivers/gpu/drm/amd/amdgpu/Makefile
@@ -58,7 +58,7 @@ amdgpu-y += amdgpu_device.o amdgpu_kms.o \
 	amdgpu_vm_sdma.o amdgpu_discovery.o amdgpu_ras_eeprom.o amdgpu_nbio.o \
 	amdgpu_umc.o smu_v11_0_i2c.o amdgpu_fru_eeprom.o amdgpu_rap.o \
 	amdgpu_fw_attestation.o amdgpu_securedisplay.o \
-	amdgpu_eeprom.o amdgpu_mca.o amdgpu_psp_ta.o
+	amdgpu_eeprom.o amdgpu_mca.o amdgpu_psp_ta.o amdgpu_lsdma.o
 
 amdgpu-$(CONFIG_PROC_FS) += amdgpu_fdinfo.o
 
@@ -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 hdp_v5_2.o
+	nbio_v4_3.o hdp_v6_0.o nbio_v7_7.o hdp_v5_2.o lsdma_v6_0.o
 
 # add DF block
 amdgpu-y += \
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index fd6836bd7d2c..b4d3d9a4cad2 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -86,6 +86,7 @@
 #include "amdgpu_gmc.h"
 #include "amdgpu_gfx.h"
 #include "amdgpu_sdma.h"
+#include "amdgpu_lsdma.h"
 #include "amdgpu_nbio.h"
 #include "amdgpu_hdp.h"
 #include "amdgpu_dm.h"
@@ -643,6 +644,7 @@ enum amd_hw_ip_block_type {
 	SDMA5_HWIP,
 	SDMA6_HWIP,
 	SDMA7_HWIP,
+	LSDMA_HWIP,
 	MMHUB_HWIP,
 	ATHUB_HWIP,
 	NBIO_HWIP,
@@ -909,6 +911,9 @@ struct amdgpu_device {
 	/* sdma */
 	struct amdgpu_sdma		sdma;
 
+	/* lsdma */
+	struct amdgpu_lsdma		lsdma;
+
 	/* uvd */
 	struct amdgpu_uvd		uvd;
 
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c
index 263fedadbf5b..3f9f2d6cc6c2 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c
@@ -66,6 +66,7 @@
 #include "sdma_v5_0.h"
 #include "sdma_v5_2.h"
 #include "sdma_v6_0.h"
+#include "lsdma_v6_0.h"
 #include "vcn_v2_0.h"
 #include "jpeg_v2_0.h"
 #include "vcn_v3_0.h"
@@ -124,6 +125,7 @@ static const char *hw_id_names[HW_ID_MAX] = {
 	[SDMA1_HWID]		= "SDMA1",
 	[SDMA2_HWID]		= "SDMA2",
 	[SDMA3_HWID]		= "SDMA3",
+	[LSDMA_HWID]		= "LSDMA",
 	[ISP_HWID]		= "ISP",
 	[DBGU_IO_HWID]		= "DBGU_IO",
 	[DF_HWID]		= "DF",
@@ -173,6 +175,7 @@ static int hw_id_map[MAX_HWIP] = {
 	[SDMA1_HWIP]	= SDMA1_HWID,
 	[SDMA2_HWIP]    = SDMA2_HWID,
 	[SDMA3_HWIP]    = SDMA3_HWID,
+	[LSDMA_HWIP]    = LSDMA_HWID,
 	[MMHUB_HWIP]	= MMHUB_HWID,
 	[ATHUB_HWIP]	= ATHUB_HWID,
 	[NBIO_HWIP]	= NBIF_HWID,
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_lsdma.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_lsdma.c
new file mode 100644
index 000000000000..af00a66f8282
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_lsdma.c
@@ -0,0 +1,25 @@
+/*
+ * 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"
+#include "amdgpu_lsdma.h"
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_lsdma.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_lsdma.h
new file mode 100644
index 000000000000..eae19c24937c
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_lsdma.h
@@ -0,0 +1,34 @@
+/*
+ * 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 __AMDGPU_LSDMA_H__
+#define __AMDGPU_LSDMA_H__
+
+struct amdgpu_lsdma {
+	const struct amdgpu_lsdma_funcs      *funcs;
+};
+
+struct amdgpu_lsdma_funcs {
+};
+
+#endif
diff --git a/drivers/gpu/drm/amd/amdgpu/lsdma_v6_0.c b/drivers/gpu/drm/amd/amdgpu/lsdma_v6_0.c
new file mode 100644
index 000000000000..b611ade53be2
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/lsdma_v6_0.c
@@ -0,0 +1,33 @@
+/*
+ * 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/delay.h>
+#include "amdgpu.h"
+#include "lsdma_v6_0.h"
+#include "amdgpu_lsdma.h"
+
+#include "lsdma/lsdma_6_0_0_offset.h"
+#include "lsdma/lsdma_6_0_0_sh_mask.h"
+
+const struct amdgpu_lsdma_funcs lsdma_v6_0_funcs = {
+};
diff --git a/drivers/gpu/drm/amd/amdgpu/lsdma_v6_0.h b/drivers/gpu/drm/amd/amdgpu/lsdma_v6_0.h
new file mode 100644
index 000000000000..3ef79be1a9bf
--- /dev/null
+++ b/drivers/gpu/drm/amd/amdgpu/lsdma_v6_0.h
@@ -0,0 +1,31 @@
+/*
+ * 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 __LSDMA_V6_0_H__
+#define __LSDMA_V6_0_H__
+
+#include "soc15_common.h"
+
+extern const struct amdgpu_lsdma_funcs lsdma_v6_0_funcs;
+
+#endif /* __LSDMA_V6_0_H__ */
diff --git a/drivers/gpu/drm/amd/include/soc15_hw_ip.h b/drivers/gpu/drm/amd/include/soc15_hw_ip.h
index c1519d20596a..bc9783da7e96 100644
--- a/drivers/gpu/drm/amd/include/soc15_hw_ip.h
+++ b/drivers/gpu/drm/amd/include/soc15_hw_ip.h
@@ -86,6 +86,7 @@
 #define PCS_HWID                                          80
 #define DDCL_HWID                                         89
 #define SST_HWID                                          90
+#define LSDMA_HWID                                        91
 #define IOAGR_HWID                                       100
 #define NBIF_HWID                                        108
 #define IOAPIC_HWID                                      124