diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_device.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index d9074117fb04..53ea782c2c47 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -2985,6 +2985,66 @@ static ssize_t amdgpu_debugfs_wave_read(struct file *f, char __user *buf, return result; } +static ssize_t amdgpu_debugfs_gpr_read(struct file *f, char __user *buf, + size_t size, loff_t *pos) +{ + struct amdgpu_device *adev = f->f_inode->i_private; + int r; + ssize_t result = 0; + uint32_t offset, se, sh, cu, wave, simd, thread, bank, *data; + + if (size & 3 || *pos & 3) + return -EINVAL; + + /* decode offset */ + offset = (*pos & 0xFFF); /* in dwords */ + se = ((*pos >> 12) & 0xFF); + sh = ((*pos >> 20) & 0xFF); + cu = ((*pos >> 28) & 0xFF); + wave = ((*pos >> 36) & 0xFF); + simd = ((*pos >> 44) & 0xFF); + thread = ((*pos >> 52) & 0xFF); + bank = ((*pos >> 60) & 1); + + data = kmalloc_array(1024, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + /* switch to the specific se/sh/cu */ + mutex_lock(&adev->grbm_idx_mutex); + amdgpu_gfx_select_se_sh(adev, se, sh, cu); + + if (bank == 0) { + if (adev->gfx.funcs->read_wave_vgprs) + adev->gfx.funcs->read_wave_vgprs(adev, simd, wave, thread, offset, size>>2, data); + } else { + if (adev->gfx.funcs->read_wave_sgprs) + adev->gfx.funcs->read_wave_sgprs(adev, simd, wave, offset, size>>2, data); + } + + amdgpu_gfx_select_se_sh(adev, 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF); + mutex_unlock(&adev->grbm_idx_mutex); + + while (size) { + uint32_t value; + + value = data[offset++]; + r = put_user(value, (uint32_t *)buf); + if (r) { + result = r; + goto err; + } + + result += 4; + buf += 4; + size -= 4; + } + +err: + kfree(data); + return result; +} + static const struct file_operations amdgpu_debugfs_regs_fops = { .owner = THIS_MODULE, .read = amdgpu_debugfs_regs_read, @@ -3027,6 +3087,11 @@ static const struct file_operations amdgpu_debugfs_wave_fops = { .read = amdgpu_debugfs_wave_read, .llseek = default_llseek }; +static const struct file_operations amdgpu_debugfs_gpr_fops = { + .owner = THIS_MODULE, + .read = amdgpu_debugfs_gpr_read, + .llseek = default_llseek +}; static const struct file_operations *debugfs_regs[] = { &amdgpu_debugfs_regs_fops, @@ -3036,6 +3101,7 @@ static const struct file_operations *debugfs_regs[] = { &amdgpu_debugfs_gca_config_fops, &amdgpu_debugfs_sensors_fops, &amdgpu_debugfs_wave_fops, + &amdgpu_debugfs_gpr_fops, }; static const char *debugfs_regs_names[] = { @@ -3046,6 +3112,7 @@ static const char *debugfs_regs_names[] = { "amdgpu_gca_config", "amdgpu_sensors", "amdgpu_wave", + "amdgpu_gpr", }; static int amdgpu_debugfs_regs_init(struct amdgpu_device *adev) |