Re: [PATCH v5 03/27] drm/amdgpu: Split amdgpu_device_fini into early and late

Am 28.04.21 um 17:11 schrieb Andrey Grodzovsky:

Some of the stuff in amdgpu_device_fini such as HW interrupts disable and pending fences finilization must be done right away on pci_remove while most of the stuff which relates to finilizing and releasing driver data structures can be kept until drm_driver.release hook is called, i.e. when the last device reference is dropped.

v4: Change functions prefix early->hw and late->sw

Signed-off-by: Andrey Grodzovsky andrey.grodzovsky@amd.com

Acked-by: Christian König christian.koenig@amd.com

But Alex should acknowledge this as well since it is general driver design.

Christian.

---

drivers/gpu/drm/amd/amdgpu/amdgpu.h | 6 ++++- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 26 +++++++++++++++------- drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 7 ++---- drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c | 15 ++++++++++++- drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c | 26 +++++++++++++--------- drivers/gpu/drm/amd/amdgpu/amdgpu_irq.h | 3 ++- drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 12 +++++++++- drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 1 + drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h | 3 ++- drivers/gpu/drm/amd/amdgpu/cik_ih.c | 2 +- drivers/gpu/drm/amd/amdgpu/cz_ih.c | 2 +- drivers/gpu/drm/amd/amdgpu/iceland_ih.c | 2 +- drivers/gpu/drm/amd/amdgpu/navi10_ih.c | 2 +- drivers/gpu/drm/amd/amdgpu/si_ih.c | 2 +- drivers/gpu/drm/amd/amdgpu/tonga_ih.c | 2 +- drivers/gpu/drm/amd/amdgpu/vega10_ih.c | 2 +- drivers/gpu/drm/amd/amdgpu/vega20_ih.c | 2 +- 17 files changed, 79 insertions(+), 36 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 1af2fa1591fd..fddb82897e5d 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -1073,7 +1073,9 @@ static inline struct amdgpu_device *amdgpu_ttm_adev(struct ttm_device *bdev)

int amdgpu_device_init(struct amdgpu_device *adev, uint32_t flags); -void amdgpu_device_fini(struct amdgpu_device *adev); +void amdgpu_device_fini_hw(struct amdgpu_device *adev); +void amdgpu_device_fini_sw(struct amdgpu_device *adev);

• int amdgpu_gpu_wait_for_idle(struct amdgpu_device *adev);

  void amdgpu_device_vram_access(struct amdgpu_device *adev, loff_t pos,

@@ -1289,6 +1291,8 @@ void amdgpu_driver_lastclose_kms(struct drm_device *dev); int amdgpu_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv); void amdgpu_driver_postclose_kms(struct drm_device *dev, struct drm_file *file_priv); +void amdgpu_driver_release_kms(struct drm_device *dev);

• int amdgpu_device_ip_suspend(struct amdgpu_device *adev); int amdgpu_device_suspend(struct drm_device *dev, bool fbcon); int amdgpu_device_resume(struct drm_device *dev, bool fbcon);

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 6447cd6ca5a8..8d22b79fc1cd 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -3590,14 +3590,12 @@ int amdgpu_device_init(struct amdgpu_device *adev,

• Tear down the driver info (all asics).
• Called at driver shutdown.

*/ -void amdgpu_device_fini(struct amdgpu_device *adev) +void amdgpu_device_fini_hw(struct amdgpu_device *adev) { dev_info(adev->dev, "amdgpu: finishing device.\n"); flush_delayed_work(&adev->delayed_init_work); adev->shutdown = true;

• kfree(adev->pci_state);
• /* make sure IB test finished before entering exclusive mode
  • to avoid preemption on IB test
  • */

@@ -3614,11 +3612,24 @@ void amdgpu_device_fini(struct amdgpu_device *adev) else drm_atomic_helper_shutdown(adev_to_drm(adev)); }

• amdgpu_fence_driver_fini(adev);

• amdgpu_fence_driver_fini_hw(adev);
• if (adev->pm_sysfs_en) amdgpu_pm_sysfs_fini(adev);
• if (adev->ucode_sysfs_en)

• amdgpu_ucode_sysfs_fini(adev);
  

• sysfs_remove_files(&adev->dev->kobj, amdgpu_dev_attributes);
• amdgpu_fbdev_fini(adev);
• amdgpu_irq_fini_hw(adev);

+}

+void amdgpu_device_fini_sw(struct amdgpu_device *adev) +{ amdgpu_device_ip_fini(adev);

• amdgpu_fence_driver_fini_sw(adev); release_firmware(adev->firmware.gpu_info_fw); adev->firmware.gpu_info_fw = NULL; adev->accel_working = false;

@@ -3647,14 +3658,13 @@ void amdgpu_device_fini(struct amdgpu_device *adev) adev->rmmio = NULL; amdgpu_device_doorbell_fini(adev);

• if (adev->ucode_sysfs_en)

• amdgpu_ucode_sysfs_fini(adev);
  

• sysfs_remove_files(&adev->dev->kobj, amdgpu_dev_attributes); if (IS_ENABLED(CONFIG_PERF_EVENTS)) amdgpu_pmu_fini(adev); if (adev->mman.discovery_bin) amdgpu_discovery_fini(adev);

• kfree(adev->pci_state);
• }

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index 671ec1002230..54cb5ee2f563 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -1249,14 +1249,10 @@ amdgpu_pci_remove(struct pci_dev *pdev) { struct drm_device *dev = pci_get_drvdata(pdev);

-#ifdef MODULE

• if (THIS_MODULE->state != MODULE_STATE_GOING)

-#endif

• DRM_ERROR("Hotplug removal is not supported\n");
  

  drm_dev_unplug(dev); amdgpu_driver_unload_kms(dev);

• pci_disable_device(pdev);

• pci_set_drvdata(pdev, NULL); }

  static void

@@ -1587,6 +1583,7 @@ static const struct drm_driver amdgpu_kms_driver = { .dumb_create = amdgpu_mode_dumb_create, .dumb_map_offset = amdgpu_mode_dumb_mmap, .fops = &amdgpu_driver_kms_fops,

• .release = &amdgpu_driver_release_kms,

  .prime_handle_to_fd = drm_gem_prime_handle_to_fd, .prime_fd_to_handle = drm_gem_prime_fd_to_handle,

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c index 8e0a5650d383..34d51e962799 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c @@ -523,7 +523,7 @@ int amdgpu_fence_driver_init(struct amdgpu_device *adev)

• Tear down the fence driver for all possible rings (all asics).

*/ -void amdgpu_fence_driver_fini(struct amdgpu_device *adev) +void amdgpu_fence_driver_fini_hw(struct amdgpu_device *adev) { unsigned i, j; int r; @@ -544,6 +544,19 @@ void amdgpu_fence_driver_fini(struct amdgpu_device *adev) if (!ring->no_scheduler) drm_sched_fini(&ring->sched); del_timer_sync(&ring->fence_drv.fallback_timer);

• }

+}

+void amdgpu_fence_driver_fini_sw(struct amdgpu_device *adev) +{

• unsigned int i, j;
• for (i = 0; i < AMDGPU_MAX_RINGS; i++) {

• struct amdgpu_ring *ring = adev->rings[i];
  

• if (!ring || !ring->fence_drv.initialized)
  

• 	continue;
  

• for (j = 0; j <= ring->fence_drv.num_fences_mask; ++j) dma_fence_put(ring->fence_drv.fences[j]); kfree(ring->fence_drv.fences);

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c index afbbec82a289..63e815c27585 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.c @@ -49,6 +49,7 @@ #include <drm/drm_irq.h> #include <drm/drm_vblank.h> #include <drm/amdgpu_drm.h> +#include <drm/drm_drv.h> #include "amdgpu.h" #include "amdgpu_ih.h" #include "atom.h" @@ -313,6 +314,20 @@ int amdgpu_irq_init(struct amdgpu_device *adev) return 0; }

+void amdgpu_irq_fini_hw(struct amdgpu_device *adev) +{

• if (adev->irq.installed) {

• drm_irq_uninstall(&adev->ddev);
  

• adev->irq.installed = false;
  

• if (adev->irq.msi_enabled)
  

• 	pci_free_irq_vectors(adev->pdev);
  

• if (!amdgpu_device_has_dc_support(adev))
  

• 	flush_work(&adev->hotplug_work);
  

• }

+}

• /**
  • amdgpu_irq_fini - shut down interrupt handling

@@ -322,19 +337,10 @@ int amdgpu_irq_init(struct amdgpu_device *adev)

• functionality, shuts down vblank, hotplug and reset interrupt handling,
• turns off interrupts from all sources (all ASICs).

*/ -void amdgpu_irq_fini(struct amdgpu_device *adev) +void amdgpu_irq_fini_sw(struct amdgpu_device *adev) { unsigned i, j;

• if (adev->irq.installed) {

• drm_irq_uninstall(adev_to_drm(adev));
  

• adev->irq.installed = false;
  

• if (adev->irq.msi_enabled)
  

• 	pci_free_irq_vectors(adev->pdev);
  

• if (!amdgpu_device_has_dc_support(adev))
  

• 	flush_work(&adev->hotplug_work);
  

• }
• for (i = 0; i < AMDGPU_IRQ_CLIENTID_MAX; ++i) { if (!adev->irq.client[i].sources) continue;

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.h index ac527e5deae6..392a7324e2b1 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.h @@ -104,7 +104,8 @@ void amdgpu_irq_disable_all(struct amdgpu_device *adev); irqreturn_t amdgpu_irq_handler(int irq, void *arg);

int amdgpu_irq_init(struct amdgpu_device *adev); -void amdgpu_irq_fini(struct amdgpu_device *adev); +void amdgpu_irq_fini_sw(struct amdgpu_device *adev); +void amdgpu_irq_fini_hw(struct amdgpu_device *adev); int amdgpu_irq_add_id(struct amdgpu_device *adev, unsigned client_id, unsigned src_id, struct amdgpu_irq_src *source); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c index 64beb3399604..1af3fba7bfd4 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c @@ -29,6 +29,7 @@ #include "amdgpu.h" #include <drm/drm_debugfs.h> #include <drm/amdgpu_drm.h> +#include <drm/drm_drv.h> #include "amdgpu_uvd.h" #include "amdgpu_vce.h" #include "atom.h" @@ -93,7 +94,7 @@ void amdgpu_driver_unload_kms(struct drm_device *dev) }

amdgpu_acpi_fini(adev);

• amdgpu_device_fini(adev);

• amdgpu_device_fini_hw(adev); }

  void amdgpu_register_gpu_instance(struct amdgpu_device *adev)

@@ -1151,6 +1152,15 @@ void amdgpu_driver_postclose_kms(struct drm_device *dev, pm_runtime_put_autosuspend(dev->dev); }

+void amdgpu_driver_release_kms(struct drm_device *dev) +{

• struct amdgpu_device *adev = drm_to_adev(dev);
• amdgpu_device_fini_sw(adev);
• pci_set_drvdata(adev->pdev, NULL);

+}

• /*
  • VBlank related functions.
  */

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c index 1fb2a91ad30a..c0a16eac4923 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c @@ -2142,6 +2142,7 @@ int amdgpu_ras_pre_fini(struct amdgpu_device *adev) if (!con) return 0;

• /* Need disable ras on all IPs here before ip [hw/sw]fini */ amdgpu_ras_disable_all_features(adev, 0); amdgpu_ras_recovery_fini(adev);

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h index 56acec1075ac..0f195f7bf797 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h @@ -107,7 +107,8 @@ struct amdgpu_fence_driver { };

int amdgpu_fence_driver_init(struct amdgpu_device *adev); -void amdgpu_fence_driver_fini(struct amdgpu_device *adev); +void amdgpu_fence_driver_fini_hw(struct amdgpu_device *adev); +void amdgpu_fence_driver_fini_sw(struct amdgpu_device *adev); void amdgpu_fence_driver_force_completion(struct amdgpu_ring *ring);

int amdgpu_fence_driver_init_ring(struct amdgpu_ring *ring, diff --git a/drivers/gpu/drm/amd/amdgpu/cik_ih.c b/drivers/gpu/drm/amd/amdgpu/cik_ih.c index d3745711d55f..183d44a6583c 100644 --- a/drivers/gpu/drm/amd/amdgpu/cik_ih.c +++ b/drivers/gpu/drm/amd/amdgpu/cik_ih.c @@ -309,7 +309,7 @@ static int cik_ih_sw_fini(void *handle) { struct amdgpu_device *adev = (struct amdgpu_device *)handle;

• amdgpu_irq_fini(adev);

• amdgpu_irq_fini_sw(adev); amdgpu_ih_ring_fini(adev, &adev->irq.ih); amdgpu_irq_remove_domain(adev);

diff --git a/drivers/gpu/drm/amd/amdgpu/cz_ih.c b/drivers/gpu/drm/amd/amdgpu/cz_ih.c index 307c01301c87..d32743949003 100644 --- a/drivers/gpu/drm/amd/amdgpu/cz_ih.c +++ b/drivers/gpu/drm/amd/amdgpu/cz_ih.c @@ -301,7 +301,7 @@ static int cz_ih_sw_fini(void *handle) { struct amdgpu_device *adev = (struct amdgpu_device *)handle;

• amdgpu_irq_fini(adev);

• amdgpu_irq_fini_sw(adev); amdgpu_ih_ring_fini(adev, &adev->irq.ih); amdgpu_irq_remove_domain(adev);

diff --git a/drivers/gpu/drm/amd/amdgpu/iceland_ih.c b/drivers/gpu/drm/amd/amdgpu/iceland_ih.c index cc957471f31e..da96c6013477 100644 --- a/drivers/gpu/drm/amd/amdgpu/iceland_ih.c +++ b/drivers/gpu/drm/amd/amdgpu/iceland_ih.c @@ -300,7 +300,7 @@ static int iceland_ih_sw_fini(void *handle) { struct amdgpu_device *adev = (struct amdgpu_device *)handle;

• amdgpu_irq_fini(adev);

• amdgpu_irq_fini_sw(adev); amdgpu_ih_ring_fini(adev, &adev->irq.ih); amdgpu_irq_remove_domain(adev);

diff --git a/drivers/gpu/drm/amd/amdgpu/navi10_ih.c b/drivers/gpu/drm/amd/amdgpu/navi10_ih.c index f4e4040bbd25..5eea4550b856 100644 --- a/drivers/gpu/drm/amd/amdgpu/navi10_ih.c +++ b/drivers/gpu/drm/amd/amdgpu/navi10_ih.c @@ -569,7 +569,7 @@ static int navi10_ih_sw_fini(void *handle) { struct amdgpu_device *adev = (struct amdgpu_device *)handle;

• amdgpu_irq_fini(adev);

• amdgpu_irq_fini_sw(adev); amdgpu_ih_ring_fini(adev, &adev->irq.ih_soft); amdgpu_ih_ring_fini(adev, &adev->irq.ih2); amdgpu_ih_ring_fini(adev, &adev->irq.ih1);

diff --git a/drivers/gpu/drm/amd/amdgpu/si_ih.c b/drivers/gpu/drm/amd/amdgpu/si_ih.c index 51880f6ef634..751307f3252c 100644 --- a/drivers/gpu/drm/amd/amdgpu/si_ih.c +++ b/drivers/gpu/drm/amd/amdgpu/si_ih.c @@ -175,7 +175,7 @@ static int si_ih_sw_fini(void *handle) { struct amdgpu_device *adev = (struct amdgpu_device *)handle;

• amdgpu_irq_fini(adev);

• amdgpu_irq_fini_sw(adev); amdgpu_ih_ring_fini(adev, &adev->irq.ih);

  return 0;

diff --git a/drivers/gpu/drm/amd/amdgpu/tonga_ih.c b/drivers/gpu/drm/amd/amdgpu/tonga_ih.c index 249fcbee7871..973d80ec7f6c 100644 --- a/drivers/gpu/drm/amd/amdgpu/tonga_ih.c +++ b/drivers/gpu/drm/amd/amdgpu/tonga_ih.c @@ -312,7 +312,7 @@ static int tonga_ih_sw_fini(void *handle) { struct amdgpu_device *adev = (struct amdgpu_device *)handle;

• amdgpu_irq_fini(adev);

• amdgpu_irq_fini_sw(adev); amdgpu_ih_ring_fini(adev, &adev->irq.ih); amdgpu_irq_remove_domain(adev);

diff --git a/drivers/gpu/drm/amd/amdgpu/vega10_ih.c b/drivers/gpu/drm/amd/amdgpu/vega10_ih.c index 88626d83e07b..2d0094c276ca 100644 --- a/drivers/gpu/drm/amd/amdgpu/vega10_ih.c +++ b/drivers/gpu/drm/amd/amdgpu/vega10_ih.c @@ -523,7 +523,7 @@ static int vega10_ih_sw_fini(void *handle) { struct amdgpu_device *adev = (struct amdgpu_device *)handle;

• amdgpu_irq_fini(adev);

• amdgpu_irq_fini_sw(adev); amdgpu_ih_ring_fini(adev, &adev->irq.ih_soft); amdgpu_ih_ring_fini(adev, &adev->irq.ih2); amdgpu_ih_ring_fini(adev, &adev->irq.ih1);

diff --git a/drivers/gpu/drm/amd/amdgpu/vega20_ih.c b/drivers/gpu/drm/amd/amdgpu/vega20_ih.c index 5a3c867d5881..9059b21b079f 100644 --- a/drivers/gpu/drm/amd/amdgpu/vega20_ih.c +++ b/drivers/gpu/drm/amd/amdgpu/vega20_ih.c @@ -558,7 +558,7 @@ static int vega20_ih_sw_fini(void *handle) { struct amdgpu_device *adev = (struct amdgpu_device *)handle;

• amdgpu_irq_fini(adev);

• amdgpu_irq_fini_sw(adev); amdgpu_ih_ring_fini(adev, &adev->irq.ih_soft); amdgpu_ih_ring_fini(adev, &adev->irq.ih2); amdgpu_ih_ring_fini(adev, &adev->irq.ih1);