drm/amdgpu: allow unaligned memory access (v2)

Set up the CP and SDMA for proper unaligned memory access.
Required for OpenCL 2.x

v2: udpate commit message

Signed-off-by: Jack Xiao <Jack.Xiao@amd.com>
Reviewed-by: Monk Liu <monk.liu@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>

drivers/gpu/drm/amd/amdgpu/cik_sdma.c

@@ -33,6 +33,8 @@
 #include "bif/bif_4_1_sh_mask.h"
 
 #include "gca/gfx_7_2_d.h"
+#include "gca/gfx_7_2_enum.h"
+#include "gca/gfx_7_2_sh_mask.h"
 
 #include "gmc/gmc_7_1_d.h"
 #include "gmc/gmc_7_1_sh_mask.h"
@@ -837,6 +839,8 @@ static void cik_sdma_ring_emit_vm_flush(struct amdgpu_ring *ring,
 {
 	u32 extra_bits = (SDMA_POLL_REG_MEM_EXTRA_OP(0) |
 			  SDMA_POLL_REG_MEM_EXTRA_FUNC(0)); /* always */
+	u32 sh_mem_cfg = REG_SET_FIELD(0, SH_MEM_CONFIG, ALIGNMENT_MODE, 
+				       SH_MEM_ALIGNMENT_MODE_UNALIGNED);
 
 	amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000));
 	if (vm_id < 8) {
@@ -857,7 +861,7 @@ static void cik_sdma_ring_emit_vm_flush(struct amdgpu_ring *ring,
 
 	amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000));
 	amdgpu_ring_write(ring, mmSH_MEM_CONFIG);
-	amdgpu_ring_write(ring, 0);
+	amdgpu_ring_write(ring, sh_mem_cfg);
 
 	amdgpu_ring_write(ring, SDMA_PACKET(SDMA_OPCODE_SRBM_WRITE, 0, 0xf000));
 	amdgpu_ring_write(ring, mmSH_MEM_APE1_BASE);

drivers/gpu/drm/amd/amdgpu/gfx_v7_0.c

@@ -2022,6 +2022,7 @@ static void gfx_v7_0_gpu_init(struct amdgpu_device *adev)
 	u32 gb_addr_config;
 	u32 mc_shared_chmap, mc_arb_ramcfg;
 	u32 dimm00_addr_map, dimm01_addr_map, dimm10_addr_map, dimm11_addr_map;
+	u32 sh_mem_cfg;
 	u32 tmp;
 	int i;
 
@@ -2214,11 +2215,14 @@ static void gfx_v7_0_gpu_init(struct amdgpu_device *adev)
 
 	/* XXX SH_MEM regs */
 	/* where to put LDS, scratch, GPUVM in FSA64 space */
+	sh_mem_cfg = REG_SET_FIELD(0, SH_MEM_CONFIG, ALIGNMENT_MODE, 
+				   SH_MEM_ALIGNMENT_MODE_UNALIGNED);
+
 	mutex_lock(&adev->srbm_mutex);
 	for (i = 0; i < 16; i++) {
 		cik_srbm_select(adev, 0, 0, 0, i);
 		/* CP and shaders */
-		WREG32(mmSH_MEM_CONFIG, 0);
+		WREG32(mmSH_MEM_CONFIG, sh_mem_cfg);
 		WREG32(mmSH_MEM_APE1_BASE, 1);
 		WREG32(mmSH_MEM_APE1_LIMIT, 0);
 		WREG32(mmSH_MEM_BASES, 0);

drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c

@@ -2050,10 +2050,14 @@ static void gfx_v8_0_gpu_init(struct amdgpu_device *adev)
 		if (i == 0) {
 			tmp = REG_SET_FIELD(0, SH_MEM_CONFIG, DEFAULT_MTYPE, MTYPE_UC);
 			tmp = REG_SET_FIELD(tmp, SH_MEM_CONFIG, APE1_MTYPE, MTYPE_UC);
+			tmp = REG_SET_FIELD(tmp, SH_MEM_CONFIG, ALIGNMENT_MODE, 
+					    SH_MEM_ALIGNMENT_MODE_UNALIGNED);
 			WREG32(mmSH_MEM_CONFIG, tmp);
 		} else {
 			tmp = REG_SET_FIELD(0, SH_MEM_CONFIG, DEFAULT_MTYPE, MTYPE_NC);
 			tmp = REG_SET_FIELD(tmp, SH_MEM_CONFIG, APE1_MTYPE, MTYPE_NC);
+			tmp = REG_SET_FIELD(tmp, SH_MEM_CONFIG, ALIGNMENT_MODE, 
+					    SH_MEM_ALIGNMENT_MODE_UNALIGNED);
 			WREG32(mmSH_MEM_CONFIG, tmp);
 		}
 

drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c

@@ -36,6 +36,7 @@
 #include "gmc/gmc_8_1_sh_mask.h"
 
 #include "gca/gfx_8_0_d.h"
+#include "gca/gfx_8_0_enum.h"
 #include "gca/gfx_8_0_sh_mask.h"
 
 #include "bif/bif_5_0_d.h"
@@ -900,6 +901,8 @@ static void sdma_v2_4_ring_emit_vm_flush(struct amdgpu_ring *ring,
 					 unsigned vm_id, uint64_t pd_addr)
 {
 	u32 srbm_gfx_cntl = 0;
+	u32 sh_mem_cfg = REG_SET_FIELD(0, SH_MEM_CONFIG, ALIGNMENT_MODE, 
+				       SH_MEM_ALIGNMENT_MODE_UNALIGNED);
 
 	amdgpu_ring_write(ring, SDMA_PKT_HEADER_OP(SDMA_OP_SRBM_WRITE) |
 			  SDMA_PKT_SRBM_WRITE_HEADER_BYTE_EN(0xf));
@@ -925,7 +928,7 @@ static void sdma_v2_4_ring_emit_vm_flush(struct amdgpu_ring *ring,
 	amdgpu_ring_write(ring, SDMA_PKT_HEADER_OP(SDMA_OP_SRBM_WRITE) |
 			  SDMA_PKT_SRBM_WRITE_HEADER_BYTE_EN(0xf));
 	amdgpu_ring_write(ring, mmSH_MEM_CONFIG);
-	amdgpu_ring_write(ring, 0);
+	amdgpu_ring_write(ring, sh_mem_cfg);
 
 	amdgpu_ring_write(ring, SDMA_PKT_HEADER_OP(SDMA_OP_SRBM_WRITE) |
 			  SDMA_PKT_SRBM_WRITE_HEADER_BYTE_EN(0xf));

drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c

@@ -36,6 +36,7 @@
 #include "gmc/gmc_8_1_sh_mask.h"
 
 #include "gca/gfx_8_0_d.h"
+#include "gca/gfx_8_0_enum.h"
 #include "gca/gfx_8_0_sh_mask.h"
 
 #include "bif/bif_5_0_d.h"
@@ -963,6 +964,8 @@ static void sdma_v3_0_ring_emit_vm_flush(struct amdgpu_ring *ring,
 					 unsigned vm_id, uint64_t pd_addr)
 {
 	u32 srbm_gfx_cntl = 0;
+	u32 sh_mem_cfg = REG_SET_FIELD(0, SH_MEM_CONFIG, ALIGNMENT_MODE, 
+				       SH_MEM_ALIGNMENT_MODE_UNALIGNED);
 
 	amdgpu_ring_write(ring, SDMA_PKT_HEADER_OP(SDMA_OP_SRBM_WRITE) |
 			  SDMA_PKT_SRBM_WRITE_HEADER_BYTE_EN(0xf));
@@ -988,7 +991,7 @@ static void sdma_v3_0_ring_emit_vm_flush(struct amdgpu_ring *ring,
 	amdgpu_ring_write(ring, SDMA_PKT_HEADER_OP(SDMA_OP_SRBM_WRITE) |
 			  SDMA_PKT_SRBM_WRITE_HEADER_BYTE_EN(0xf));
 	amdgpu_ring_write(ring, mmSH_MEM_CONFIG);
-	amdgpu_ring_write(ring, 0);
+	amdgpu_ring_write(ring, sh_mem_cfg);
 
 	amdgpu_ring_write(ring, SDMA_PKT_HEADER_OP(SDMA_OP_SRBM_WRITE) |
 			  SDMA_PKT_SRBM_WRITE_HEADER_BYTE_EN(0xf));