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Date: Wed, 26 Jun 2024 16:43:13 +0200
From: Thomas Zimmermann <tzimmermann@...e.de>
To: Wu Hoi Pok <wuhoipok@...il.com>
Cc: Alex Deucher <alexander.deucher@....com>,
Christian König <christian.koenig@....com>,
"Pan, Xinhui" <Xinhui.Pan@....com>, David Airlie <airlied@...il.com>,
Daniel Vetter <daniel@...ll.ch>, amd-gfx@...ts.freedesktop.org,
dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/7] drm/radeon: remove load callback
Hi
Am 24.06.24 um 17:10 schrieb Wu Hoi Pok:
> Remove ".load" callback form "kms_driver", and move "struct drm_device"
> into radeon_device. Patch 2 to 7 follows up with changing the way of
> accessing drm_device, from "rdev->ddev" to "rdev_to_drm(rdev)" which is
> "&rdev->ddev".
This is not going to build, so it cannot go in.
This should be the final patch. First add rdev_to_drm() and convert the
driver to use it (that's one patch). Then change radeon_device.dev from
a pointer to a value in a second patch.
Best regards
Thomas
>
> Signed-off-by: Wu Hoi Pok <wuhoipok@...il.com>
> ---
> drivers/gpu/drm/radeon/radeon.h | 11 ++++++++---
> drivers/gpu/drm/radeon/radeon_drv.c | 27 ++++++++++++++++++---------
> drivers/gpu/drm/radeon/radeon_drv.h | 1 -
> drivers/gpu/drm/radeon/radeon_kms.c | 18 ++++++------------
> 4 files changed, 32 insertions(+), 25 deletions(-)
>
> diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
> index 0999c8eaae94..69bb30ced189 100644
> --- a/drivers/gpu/drm/radeon/radeon.h
> +++ b/drivers/gpu/drm/radeon/radeon.h
> @@ -2297,7 +2297,7 @@ typedef void (*radeon_wreg_t)(struct radeon_device*, uint32_t, uint32_t);
>
> struct radeon_device {
> struct device *dev;
> - struct drm_device *ddev;
> + struct drm_device ddev;
> struct pci_dev *pdev;
> #ifdef __alpha__
> struct pci_controller *hose;
> @@ -2440,10 +2440,13 @@ struct radeon_device {
> u64 gart_pin_size;
> };
>
> +static inline struct drm_device *rdev_to_drm(struct radeon_device *rdev)
> +{
> + return &rdev->ddev;
> +}
> +
> bool radeon_is_px(struct drm_device *dev);
> int radeon_device_init(struct radeon_device *rdev,
> - struct drm_device *ddev,
> - struct pci_dev *pdev,
> uint32_t flags);
> void radeon_device_fini(struct radeon_device *rdev);
> int radeon_gpu_wait_for_idle(struct radeon_device *rdev);
> @@ -2818,6 +2821,8 @@ struct radeon_device *radeon_get_rdev(struct ttm_device *bdev);
>
> /* KMS */
>
> +int radeon_driver_load_kms(struct radeon_device *dev, unsigned long flags);
> +
> u32 radeon_get_vblank_counter_kms(struct drm_crtc *crtc);
> int radeon_enable_vblank_kms(struct drm_crtc *crtc);
> void radeon_disable_vblank_kms(struct drm_crtc *crtc);
> diff --git a/drivers/gpu/drm/radeon/radeon_drv.c b/drivers/gpu/drm/radeon/radeon_drv.c
> index 7bf08164140e..ae9cadceba83 100644
> --- a/drivers/gpu/drm/radeon/radeon_drv.c
> +++ b/drivers/gpu/drm/radeon/radeon_drv.c
> @@ -259,7 +259,8 @@ static int radeon_pci_probe(struct pci_dev *pdev,
> const struct pci_device_id *ent)
> {
> unsigned long flags = 0;
> - struct drm_device *dev;
> + struct drm_device *ddev;
> + struct radeon_device *rdev;
> int ret;
>
> if (!ent)
> @@ -300,28 +301,37 @@ static int radeon_pci_probe(struct pci_dev *pdev,
> if (ret)
> return ret;
>
> - dev = drm_dev_alloc(&kms_driver, &pdev->dev);
> - if (IS_ERR(dev))
> - return PTR_ERR(dev);
> + rdev = devm_drm_dev_alloc(&pdev->dev, &kms_driver, typeof(*rdev), ddev);
> + if (IS_ERR(rdev))
> + return PTR_ERR(rdev);
> +
> + rdev->dev = &pdev->dev;
> + rdev->pdev = pdev;
> + ddev = rdev_to_drm(rdev);
> + ddev->dev_private = rdev;
>
> ret = pci_enable_device(pdev);
> if (ret)
> goto err_free;
>
> - pci_set_drvdata(pdev, dev);
> + pci_set_drvdata(pdev, ddev);
> +
> + ret = radeon_driver_load_kms(rdev, flags);
> + if (ret)
> + goto err_agp;
>
> - ret = drm_dev_register(dev, ent->driver_data);
> + ret = drm_dev_register(ddev, flags);
> if (ret)
> goto err_agp;
>
> - radeon_fbdev_setup(dev->dev_private);
> + radeon_fbdev_setup(ddev->dev_private);
>
> return 0;
>
> err_agp:
> pci_disable_device(pdev);
> err_free:
> - drm_dev_put(dev);
> + drm_dev_put(ddev);
> return ret;
> }
>
> @@ -569,7 +579,6 @@ static const struct drm_ioctl_desc radeon_ioctls_kms[] = {
> static const struct drm_driver kms_driver = {
> .driver_features =
> DRIVER_GEM | DRIVER_RENDER | DRIVER_MODESET,
> - .load = radeon_driver_load_kms,
> .open = radeon_driver_open_kms,
> .postclose = radeon_driver_postclose_kms,
> .unload = radeon_driver_unload_kms,
> diff --git a/drivers/gpu/drm/radeon/radeon_drv.h b/drivers/gpu/drm/radeon/radeon_drv.h
> index 02a65971d140..6c1eb75a951b 100644
> --- a/drivers/gpu/drm/radeon/radeon_drv.h
> +++ b/drivers/gpu/drm/radeon/radeon_drv.h
> @@ -117,7 +117,6 @@
> long radeon_drm_ioctl(struct file *filp,
> unsigned int cmd, unsigned long arg);
>
> -int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags);
> void radeon_driver_unload_kms(struct drm_device *dev);
> int radeon_driver_open_kms(struct drm_device *dev, struct drm_file *file_priv);
> void radeon_driver_postclose_kms(struct drm_device *dev,
> diff --git a/drivers/gpu/drm/radeon/radeon_kms.c b/drivers/gpu/drm/radeon/radeon_kms.c
> index a16590c6247f..d2df194393af 100644
> --- a/drivers/gpu/drm/radeon/radeon_kms.c
> +++ b/drivers/gpu/drm/radeon/radeon_kms.c
> @@ -91,7 +91,7 @@ void radeon_driver_unload_kms(struct drm_device *dev)
> /**
> * radeon_driver_load_kms - Main load function for KMS.
> *
> - * @dev: drm dev pointer
> + * @rdev: radeon dev pointer
> * @flags: device flags
> *
> * This is the main load function for KMS (all asics).
> @@ -101,24 +101,18 @@ void radeon_driver_unload_kms(struct drm_device *dev)
> * (crtcs, encoders, hotplug detect, etc.).
> * Returns 0 on success, error on failure.
> */
> -int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags)
> +int radeon_driver_load_kms(struct radeon_device *rdev, unsigned long flags)
> {
> - struct pci_dev *pdev = to_pci_dev(dev->dev);
> - struct radeon_device *rdev;
> + struct pci_dev *pdev = rdev->pdev;
> + struct drm_device *dev = rdev_to_drm(rdev);
> int r, acpi_status;
>
> - rdev = kzalloc(sizeof(struct radeon_device), GFP_KERNEL);
> - if (rdev == NULL) {
> - return -ENOMEM;
> - }
> - dev->dev_private = (void *)rdev;
> -
> #ifdef __alpha__
> rdev->hose = pdev->sysdata;
> #endif
>
> if (pci_find_capability(pdev, PCI_CAP_ID_AGP))
> - rdev->agp = radeon_agp_head_init(dev);
> + rdev->agp = radeon_agp_head_init(rdev_to_drm(rdev));
> if (rdev->agp) {
> rdev->agp->agp_mtrr = arch_phys_wc_add(
> rdev->agp->agp_info.aper_base,
> @@ -147,7 +141,7 @@ int radeon_driver_load_kms(struct drm_device *dev, unsigned long flags)
> * properly initialize the GPU MC controller and permit
> * VRAM allocation
> */
> - r = radeon_device_init(rdev, dev, pdev, flags);
> + r = radeon_device_init(rdev, flags);
> if (r) {
> dev_err(dev->dev, "Fatal error during GPU init\n");
> goto out;
--
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
HRB 36809 (AG Nuernberg)
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