[PATCH v3 08/12] drm/amdgpu: Split amdgpu_device_fini into early and late
Daniel Vetter
daniel at ffwll.ch
Tue Nov 24 14:53:18 UTC 2020
On Sat, Nov 21, 2020 at 12:21:18AM -0500, Andrey Grodzovsky wrote:
> 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.
>
Uh fini_late and fini_early are rathare meaningless namings, since no
clear why there's a split. If you used drm_connector_funcs as inspiration,
that's kinda not good because 'register' itself is a reserved keyword.
That's why we had to add late_ prefix, could as well have used
C_sucks_ as prefix :-) And then the early_unregister for consistency.
I think fini_hw and fini_sw (or maybe fini_drm) would be a lot clearer
about what they're doing.
I still strongly recommend that you cut over as much as possible of the
fini_hw work to devm_ and for the fini_sw/drm stuff there's drmm_
-Daniel
> Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky at amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu.h | 6 +++++-
> drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 16 ++++++++++++----
> 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 | 24 +++++++++++++++---------
> drivers/gpu/drm/amd/amdgpu/amdgpu_irq.h | 1 +
> drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 12 +++++++++++-
> drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 3 +++
> drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h | 3 ++-
> 9 files changed, 65 insertions(+), 22 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> index 83ac06a..6243f6d 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> @@ -1063,7 +1063,9 @@ static inline struct amdgpu_device *amdgpu_ttm_adev(struct ttm_bo_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_early(struct amdgpu_device *adev);
> +void amdgpu_device_fini_late(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,
> @@ -1275,6 +1277,8 @@ 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 2f60b70..797d94d 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> @@ -3557,14 +3557,12 @@ 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_early(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
> * */
> @@ -3581,11 +3579,18 @@ 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_early(adev);
> if (adev->pm_sysfs_en)
> amdgpu_pm_sysfs_fini(adev);
> amdgpu_fbdev_fini(adev);
> +
> + amdgpu_irq_fini_early(adev);
> +}
> +
> +void amdgpu_device_fini_late(struct amdgpu_device *adev)
> +{
> amdgpu_device_ip_fini(adev);
> + amdgpu_fence_driver_fini_late(adev);
> release_firmware(adev->firmware.gpu_info_fw);
> adev->firmware.gpu_info_fw = NULL;
> adev->accel_working = false;
> @@ -3621,6 +3626,9 @@ void amdgpu_device_fini(struct amdgpu_device *adev)
> 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 7f98cf1..3d130fc 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> @@ -1244,14 +1244,10 @@ 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);
> drm_dev_put(dev);
> }
>
> @@ -1557,6 +1553,7 @@ static struct drm_driver 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 d0b0021..c123aa6 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_early(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_late(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 300ac73..a833197 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"
> @@ -297,6 +298,20 @@ int amdgpu_irq_init(struct amdgpu_device *adev)
> return 0;
> }
>
> +
> +void amdgpu_irq_fini_early(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
> *
> @@ -310,15 +325,6 @@ void amdgpu_irq_fini(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 c718e94..718c70f 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_irq.h
> @@ -104,6 +104,7 @@ 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_early(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 a0af8a7..9e30c5c 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_sched.h"
> #include "amdgpu_uvd.h"
> #include "amdgpu_vce.h"
> @@ -94,7 +95,7 @@ void amdgpu_driver_unload_kms(struct drm_device *dev)
> }
>
> amdgpu_acpi_fini(adev);
> - amdgpu_device_fini(adev);
> + amdgpu_device_fini_early(adev);
> }
>
> void amdgpu_register_gpu_instance(struct amdgpu_device *adev)
> @@ -1147,6 +1148,15 @@ 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_late(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 9d11b84..caf828a 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
> @@ -2142,9 +2142,12 @@ int amdgpu_ras_pre_fini(struct amdgpu_device *adev)
> {
> struct amdgpu_ras *con = amdgpu_ras_get_context(adev);
>
> + //DRM_ERROR("adev 0x%llx", (long long unsigned int)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 7112137..074f36b 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_early(struct amdgpu_device *adev);
> +void amdgpu_fence_driver_fini_late(struct amdgpu_device *adev);
> void amdgpu_fence_driver_force_completion(struct amdgpu_ring *ring);
>
> int amdgpu_fence_driver_init_ring(struct amdgpu_ring *ring,
> --
> 2.7.4
>
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
More information about the amd-gfx
mailing list