drm/amd/amdgpu: re-factor debugfs wave reader

Move IP version specific code into a callback.

Also add support for gfx7 devices.
Signed-off-by: Tom St Denis <tom.stdenis@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu.h

@@ -840,6 +840,7 @@ struct amdgpu_gfx_funcs {
 	/* get the gpu clock counter */
 	uint64_t (*get_gpu_clock_counter)(struct amdgpu_device *adev);
 	void (*select_se_sh)(struct amdgpu_device *adev, u32 se_num, u32 sh_num, u32 instance);
+	void (*read_wave_data)(struct amdgpu_device *adev, uint32_t simd, uint32_t wave, uint32_t *dst, int *no_fields);
 };
 
 struct amdgpu_gfx {

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

@@ -2966,19 +2966,13 @@ static ssize_t amdgpu_debugfs_sensor_read(struct file *f, char __user *buf,
 	return !r ? 4 : r;
 }
 
-static uint32_t wave_read_ind(struct amdgpu_device *adev, uint32_t SQ_INDEX, uint32_t SQ_DATA, uint32_t simd, uint32_t wave, uint32_t address)
-{
-	WREG32(SQ_INDEX, (wave & 0xF) | ((simd & 0x3) << 4) | (address << 16) | (1 << 13));
-	return RREG32(SQ_DATA);
-}
-
 static ssize_t amdgpu_debugfs_wave_read(struct file *f, char __user *buf,
 					size_t size, loff_t *pos)
 {
 	struct amdgpu_device *adev = f->f_inode->i_private;
 	int r, x;
 	ssize_t result=0;
-	uint32_t offset, se, sh, cu, wave, simd, data[16];
+	uint32_t offset, se, sh, cu, wave, simd, data[32];
 
 	if (size & 3 || *pos & 3)
 		return -EINVAL;
@@ -2990,25 +2984,14 @@ static ssize_t amdgpu_debugfs_wave_read(struct file *f, char __user *buf,
 	cu = ((*pos >> 23) & 0xFF);
 	wave = ((*pos >> 31) & 0xFF);
 	simd = ((*pos >> 37) & 0xFF);
-	*pos &= 0x7F;
 
 	/* switch to the specific se/sh/cu */
 	mutex_lock(&adev->grbm_idx_mutex);
 	amdgpu_gfx_select_se_sh(adev, se, sh, cu);
 
 	x = 0;
-	if (adev->family == AMDGPU_FAMILY_CZ || adev->family == AMDGPU_FAMILY_VI) {
-		/* type 0 wave data */
-		data[x++] = 0;
-		data[x++] = wave_read_ind(adev, 0x2378, 0x2379, simd, wave, 0x12);
-		data[x++] = wave_read_ind(adev, 0x2378, 0x2379, simd, wave, 0x18);
-		data[x++] = wave_read_ind(adev, 0x2378, 0x2379, simd, wave, 0x19);
-		data[x++] = wave_read_ind(adev, 0x2378, 0x2379, simd, wave, 0x27E);
-		data[x++] = wave_read_ind(adev, 0x2378, 0x2379, simd, wave, 0x27F);
-		data[x++] = wave_read_ind(adev, 0x2378, 0x2379, simd, wave, 0x14);
-		data[x++] = wave_read_ind(adev, 0x2378, 0x2379, simd, wave, 0x1A);
-		data[x++] = wave_read_ind(adev, 0x2378, 0x2379, simd, wave, 0x1B);
-	}
+	if (adev->gfx.funcs->read_wave_data)
+		adev->gfx.funcs->read_wave_data(adev, simd, wave, data, &x);
 
 	amdgpu_gfx_select_se_sh(adev, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF);
 	mutex_unlock(&adev->grbm_idx_mutex);
@@ -3016,17 +2999,17 @@ static ssize_t amdgpu_debugfs_wave_read(struct file *f, char __user *buf,
 	if (!x)
 		return -EINVAL;
 
-	while (size && (*pos < x * 4)) {
+	while (size && (offset < x * 4)) {
 		uint32_t value;
 
-		value = data[*pos >> 2];
+		value = data[offset >> 2];
 		r = put_user(value, (uint32_t *)buf);
 		if (r)
 			return r;
 
 		result += 4;
 		buf += 4;
-		*pos += 4;
+		offset += 4;
 		size -= 4;
 	}
 

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

@@ -4357,9 +4357,34 @@ static void gfx_v7_0_ring_emit_gds_switch(struct amdgpu_ring *ring,
 	amdgpu_ring_write(ring, (1 << (oa_size + oa_base)) - (1 << oa_base));
 }
 
+static uint32_t wave_read_ind(struct amdgpu_device *adev, uint32_t simd, uint32_t wave, uint32_t address)
+{
+	WREG32(mmSQ_IND_INDEX, (wave & 0xF) | ((simd & 0x3) << 4) | (address << 16) | (1 << 13));
+	return RREG32(mmSQ_IND_DATA);
+}
+
+static void gfx_v7_0_read_wave_data(struct amdgpu_device *adev, uint32_t simd, uint32_t wave, uint32_t *dst, int *no_fields)
+{
+	/* type 0 wave data */
+	dst[(*no_fields)++] = 0;
+	dst[(*no_fields)++] = wave_read_ind(adev, simd, wave, ixSQ_WAVE_STATUS);
+	dst[(*no_fields)++] = wave_read_ind(adev, simd, wave, ixSQ_WAVE_PC_LO);
+	dst[(*no_fields)++] = wave_read_ind(adev, simd, wave, ixSQ_WAVE_PC_HI);
+	dst[(*no_fields)++] = wave_read_ind(adev, simd, wave, ixSQ_WAVE_EXEC_LO);
+	dst[(*no_fields)++] = wave_read_ind(adev, simd, wave, ixSQ_WAVE_EXEC_HI);
+	dst[(*no_fields)++] = wave_read_ind(adev, simd, wave, ixSQ_WAVE_HW_ID);
+	dst[(*no_fields)++] = wave_read_ind(adev, simd, wave, ixSQ_WAVE_INST_DW0);
+	dst[(*no_fields)++] = wave_read_ind(adev, simd, wave, ixSQ_WAVE_INST_DW1);
+	dst[(*no_fields)++] = wave_read_ind(adev, simd, wave, ixSQ_WAVE_GPR_ALLOC);
+	dst[(*no_fields)++] = wave_read_ind(adev, simd, wave, ixSQ_WAVE_LDS_ALLOC);
+	dst[(*no_fields)++] = wave_read_ind(adev, simd, wave, ixSQ_WAVE_TRAPSTS);
+	dst[(*no_fields)++] = wave_read_ind(adev, simd, wave, ixSQ_WAVE_IB_STS);
+}
+
 static const struct amdgpu_gfx_funcs gfx_v7_0_gfx_funcs = {
 	.get_gpu_clock_counter = &gfx_v7_0_get_gpu_clock_counter,
 	.select_se_sh = &gfx_v7_0_select_se_sh,
+	.read_wave_data = &gfx_v7_0_read_wave_data,
 };
 
 static const struct amdgpu_rlc_funcs gfx_v7_0_rlc_funcs = {

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

@@ -5441,9 +5441,35 @@ static void gfx_v8_0_ring_emit_gds_switch(struct amdgpu_ring *ring,
 	amdgpu_ring_write(ring, (1 << (oa_size + oa_base)) - (1 << oa_base));
 }
 
+static uint32_t wave_read_ind(struct amdgpu_device *adev, uint32_t simd, uint32_t wave, uint32_t address)
+{
+	WREG32(mmSQ_IND_INDEX, (wave & 0xF) | ((simd & 0x3) << 4) | (address << 16) | (1 << 13));
+	return RREG32(mmSQ_IND_DATA);
+}
+
+static void gfx_v8_0_read_wave_data(struct amdgpu_device *adev, uint32_t simd, uint32_t wave, uint32_t *dst, int *no_fields)
+{
+	/* type 0 wave data */
+	dst[(*no_fields)++] = 0;
+	dst[(*no_fields)++] = wave_read_ind(adev, simd, wave, ixSQ_WAVE_STATUS);
+	dst[(*no_fields)++] = wave_read_ind(adev, simd, wave, ixSQ_WAVE_PC_LO);
+	dst[(*no_fields)++] = wave_read_ind(adev, simd, wave, ixSQ_WAVE_PC_HI);
+	dst[(*no_fields)++] = wave_read_ind(adev, simd, wave, ixSQ_WAVE_EXEC_LO);
+	dst[(*no_fields)++] = wave_read_ind(adev, simd, wave, ixSQ_WAVE_EXEC_HI);
+	dst[(*no_fields)++] = wave_read_ind(adev, simd, wave, ixSQ_WAVE_HW_ID);
+	dst[(*no_fields)++] = wave_read_ind(adev, simd, wave, ixSQ_WAVE_INST_DW0);
+	dst[(*no_fields)++] = wave_read_ind(adev, simd, wave, ixSQ_WAVE_INST_DW1);
+	dst[(*no_fields)++] = wave_read_ind(adev, simd, wave, ixSQ_WAVE_GPR_ALLOC);
+	dst[(*no_fields)++] = wave_read_ind(adev, simd, wave, ixSQ_WAVE_LDS_ALLOC);
+	dst[(*no_fields)++] = wave_read_ind(adev, simd, wave, ixSQ_WAVE_TRAPSTS);
+	dst[(*no_fields)++] = wave_read_ind(adev, simd, wave, ixSQ_WAVE_IB_STS);
+}
+
+
 static const struct amdgpu_gfx_funcs gfx_v8_0_gfx_funcs = {
 	.get_gpu_clock_counter = &gfx_v8_0_get_gpu_clock_counter,
 	.select_se_sh = &gfx_v8_0_select_se_sh,
+	.read_wave_data = &gfx_v8_0_read_wave_data,
 };
 
 static int gfx_v8_0_early_init(void *handle)