From 59fd50b8663b4e703b44f9b51a2e715dc6e344c1 Mon Sep 17 00:00:00 2001 From: "Jesse.zhang@amd.com" Date: Mon, 4 Nov 2024 13:15:49 +0800 Subject: drm/amdgpu: Add sysfs interface for sdma reset mask Add the sysfs interface for sdma: sdma_reset_mask The interface is read-only and show the resets supported by the IP. For example, full adapter reset (mode1/mode2/BACO/etc), soft reset, queue reset, and pipe reset. V2: the sysfs node returns a text string instead of some flags (Christian) v3: add a generic helper which takes the ring as parameter and print the strings in the order they are applied (Christian) check amdgpu_gpu_recovery before creating sysfs file itself, and initialize supported_reset_types in IP version files (Lijo) Signed-off-by: Jesse Zhang Suggested-by: Alex Deucher Reviewed-by: Tim Huang Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c | 41 ++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c index 5868b4a32ea6..8c89b69edc20 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c @@ -413,3 +413,44 @@ void amdgpu_debugfs_sdma_sched_mask_init(struct amdgpu_device *adev) &amdgpu_debugfs_sdma_sched_mask_fops); #endif } + +static ssize_t amdgpu_get_sdma_reset_mask(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct drm_device *ddev = dev_get_drvdata(dev); + struct amdgpu_device *adev = drm_to_adev(ddev); + + if (!adev) + return -ENODEV; + + return amdgpu_show_reset_mask(buf, adev->sdma.supported_reset); +} + +static DEVICE_ATTR(sdma_reset_mask, 0444, + amdgpu_get_sdma_reset_mask, NULL); + +int amdgpu_sdma_sysfs_reset_mask_init(struct amdgpu_device *adev) +{ + int r = 0; + + if (!amdgpu_gpu_recovery) + return r; + + if (adev->sdma.num_instances) { + r = device_create_file(adev->dev, &dev_attr_sdma_reset_mask); + if (r) + return r; + } + + return r; +} + +void amdgpu_sdma_sysfs_reset_mask_fini(struct amdgpu_device *adev) +{ + if (!amdgpu_gpu_recovery) + return; + + if (adev->sdma.num_instances) + device_remove_file(adev->dev, &dev_attr_sdma_reset_mask); +} -- cgit v1.2.3-70-g09d2