Now that we have the accel framework code ready, let's call the
accel functions from all the appropriate places. These places are the
drm module init/exit functions, and all the drm_minor handling
functions.
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
---
drivers/gpu/drm/drm_drv.c | 102 ++++++++++++++++++++++++++----------
drivers/gpu/drm/drm_sysfs.c | 24 ++++++---
2 files changed, 91 insertions(+), 35 deletions(-)
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 8214a0b1ab7f..1aec019f6389 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -35,6 +35,7 @@
#include <linux/slab.h>
#include <linux/srcu.h>
+#include <drm/drm_accel.h>
#include <drm/drm_cache.h>
#include <drm/drm_client.h>
#include <drm/drm_color_mgmt.h>
@@ -90,6 +91,8 @@ static struct drm_minor **drm_minor_get_slot(struct drm_device *dev,
return &dev->primary;
case DRM_MINOR_RENDER:
return &dev->render;
+ case DRM_MINOR_ACCEL:
+ return &dev->accel;
default:
BUG();
}
@@ -104,9 +107,13 @@ static void drm_minor_alloc_release(struct drm_device *dev, void *data)
put_device(minor->kdev);
- spin_lock_irqsave(&drm_minor_lock, flags);
- idr_remove(&drm_minors_idr, minor->index);
- spin_unlock_irqrestore(&drm_minor_lock, flags);
+ if (minor->type == DRM_MINOR_ACCEL) {
+ accel_minor_remove(minor->index);
+ } else {
+ spin_lock_irqsave(&drm_minor_lock, flags);
+ idr_remove(&drm_minors_idr, minor->index);
+ spin_unlock_irqrestore(&drm_minor_lock, flags);
+ }
}
static int drm_minor_alloc(struct drm_device *dev, unsigned int type)
@@ -123,13 +130,17 @@ static int drm_minor_alloc(struct drm_device *dev, unsigned int type)
minor->dev = dev;
idr_preload(GFP_KERNEL);
- spin_lock_irqsave(&drm_minor_lock, flags);
- r = idr_alloc(&drm_minors_idr,
- NULL,
- 64 * type,
- 64 * (type + 1),
- GFP_NOWAIT);
- spin_unlock_irqrestore(&drm_minor_lock, flags);
+ if (type == DRM_MINOR_ACCEL) {
+ r = accel_minor_alloc();
+ } else {
+ spin_lock_irqsave(&drm_minor_lock, flags);
+ r = idr_alloc(&drm_minors_idr,
+ NULL,
+ 64 * type,
+ 64 * (type + 1),
+ GFP_NOWAIT);
+ spin_unlock_irqrestore(&drm_minor_lock, flags);
+ }
idr_preload_end();
if (r < 0)
@@ -161,10 +172,14 @@ static int drm_minor_register(struct drm_device *dev, unsigned int type)
if (!minor)
return 0;
- ret = drm_debugfs_init(minor, minor->index, drm_debugfs_root);
- if (ret) {
- DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");
- goto err_debugfs;
+ if (minor->type == DRM_MINOR_ACCEL) {
+ accel_debugfs_init(minor, minor->index);
+ } else {
+ ret = drm_debugfs_init(minor, minor->index, drm_debugfs_root);
+ if (ret) {
+ DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");
+ goto err_debugfs;
+ }
}
ret = device_add(minor->kdev);
@@ -172,9 +187,13 @@ static int drm_minor_register(struct drm_device *dev, unsigned int type)
goto err_debugfs;
/* replace NULL with @minor so lookups will succeed from now on */
- spin_lock_irqsave(&drm_minor_lock, flags);
- idr_replace(&drm_minors_idr, minor, minor->index);
- spin_unlock_irqrestore(&drm_minor_lock, flags);
+ if (minor->type == DRM_MINOR_ACCEL) {
+ accel_minor_replace(minor, minor->index);
+ } else {
+ spin_lock_irqsave(&drm_minor_lock, flags);
+ idr_replace(&drm_minors_idr, minor, minor->index);
+ spin_unlock_irqrestore(&drm_minor_lock, flags);
+ }
DRM_DEBUG("new minor registered %d\n", minor->index);
return 0;
@@ -194,9 +213,13 @@ static void drm_minor_unregister(struct drm_device *dev, unsigned int type)
return;
/* replace @minor with NULL so lookups will fail from now on */
- spin_lock_irqsave(&drm_minor_lock, flags);
- idr_replace(&drm_minors_idr, NULL, minor->index);
- spin_unlock_irqrestore(&drm_minor_lock, flags);
+ if (minor->type == DRM_MINOR_ACCEL) {
+ accel_minor_replace(NULL, minor->index);
+ } else {
+ spin_lock_irqsave(&drm_minor_lock, flags);
+ idr_replace(&drm_minors_idr, NULL, minor->index);
+ spin_unlock_irqrestore(&drm_minor_lock, flags);
+ }
device_del(minor->kdev);
dev_set_drvdata(minor->kdev, NULL); /* safety belt */
@@ -603,6 +626,14 @@ static int drm_dev_init(struct drm_device *dev,
/* no per-device feature limits by default */
dev->driver_features = ~0u;
+ if (drm_core_check_feature(dev, DRIVER_COMPUTE_ACCEL) &&
+ (drm_core_check_feature(dev, DRIVER_RENDER) ||
+ drm_core_check_feature(dev, DRIVER_MODESET))) {
+
+ DRM_ERROR("DRM driver can't be both a compute acceleration and graphics driver\n");
+ return -EINVAL;
+ }
+
drm_legacy_init_members(dev);
INIT_LIST_HEAD(&dev->filelist);
INIT_LIST_HEAD(&dev->filelist_internal);
@@ -628,15 +659,21 @@ static int drm_dev_init(struct drm_device *dev,
dev->anon_inode = inode;
- if (drm_core_check_feature(dev, DRIVER_RENDER)) {
- ret = drm_minor_alloc(dev, DRM_MINOR_RENDER);
+ if (drm_core_check_feature(dev, DRIVER_COMPUTE_ACCEL)) {
+ ret = drm_minor_alloc(dev, DRM_MINOR_ACCEL);
if (ret)
goto err;
- }
+ } else {
+ if (drm_core_check_feature(dev, DRIVER_RENDER)) {
+ ret = drm_minor_alloc(dev, DRM_MINOR_RENDER);
+ if (ret)
+ goto err;
+ }
- ret = drm_minor_alloc(dev, DRM_MINOR_PRIMARY);
- if (ret)
- goto err;
+ ret = drm_minor_alloc(dev, DRM_MINOR_PRIMARY);
+ if (ret)
+ goto err;
+ }
ret = drm_legacy_create_map_hash(dev);
if (ret)
@@ -883,6 +920,10 @@ int drm_dev_register(struct drm_device *dev, unsigned long flags)
if (ret)
goto err_minors;
+ ret = drm_minor_register(dev, DRM_MINOR_ACCEL);
+ if (ret)
+ goto err_minors;
+
ret = create_compat_control_link(dev);
if (ret)
goto err_minors;
@@ -902,12 +943,13 @@ int drm_dev_register(struct drm_device *dev, unsigned long flags)
driver->name, driver->major, driver->minor,
driver->patchlevel, driver->date,
dev->dev ? dev_name(dev->dev) : "virtual device",
- dev->primary->index);
+ dev->primary ? dev->primary->index : dev->accel->index);
goto out_unlock;
err_minors:
remove_compat_control_link(dev);
+ drm_minor_unregister(dev, DRM_MINOR_ACCEL);
drm_minor_unregister(dev, DRM_MINOR_PRIMARY);
drm_minor_unregister(dev, DRM_MINOR_RENDER);
out_unlock:
@@ -950,6 +992,7 @@ void drm_dev_unregister(struct drm_device *dev)
drm_legacy_rmmaps(dev);
remove_compat_control_link(dev);
+ drm_minor_unregister(dev, DRM_MINOR_ACCEL);
drm_minor_unregister(dev, DRM_MINOR_PRIMARY);
drm_minor_unregister(dev, DRM_MINOR_RENDER);
}
@@ -1034,6 +1077,7 @@ static const struct file_operations drm_stub_fops = {
static void drm_core_exit(void)
{
drm_privacy_screen_lookup_exit();
+ accel_core_exit();
unregister_chrdev(DRM_MAJOR, "drm");
debugfs_remove(drm_debugfs_root);
drm_sysfs_destroy();
@@ -1061,6 +1105,10 @@ static int __init drm_core_init(void)
if (ret < 0)
goto error;
+ ret = accel_core_init();
+ if (ret < 0)
+ goto error;
+
drm_privacy_screen_lookup_init();
drm_core_init_complete = true;
diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
index 430e00b16eec..b8da978d85bb 100644
--- a/drivers/gpu/drm/drm_sysfs.c
+++ b/drivers/gpu/drm/drm_sysfs.c
@@ -19,6 +19,7 @@
#include <linux/kdev_t.h>
#include <linux/slab.h>
+#include <drm/drm_accel.h>
#include <drm/drm_connector.h>
#include <drm/drm_device.h>
#include <drm/drm_file.h>
@@ -471,19 +472,26 @@ struct device *drm_sysfs_minor_alloc(struct drm_minor *minor)
struct device *kdev;
int r;
- if (minor->type == DRM_MINOR_RENDER)
- minor_str = "renderD%d";
- else
- minor_str = "card%d";
-
kdev = kzalloc(sizeof(*kdev), GFP_KERNEL);
if (!kdev)
return ERR_PTR(-ENOMEM);
device_initialize(kdev);
- kdev->devt = MKDEV(DRM_MAJOR, minor->index);
- kdev->class = drm_class;
- kdev->type = &drm_sysfs_device_minor;
+
+ if (minor->type == DRM_MINOR_ACCEL) {
+ minor_str = "accel%d";
+ accel_set_device_instance_params(kdev, minor->index);
+ } else {
+ if (minor->type == DRM_MINOR_RENDER)
+ minor_str = "renderD%d";
+ else
+ minor_str = "card%d";
+
+ kdev->devt = MKDEV(DRM_MAJOR, minor->index);
+ kdev->class = drm_class;
+ kdev->type = &drm_sysfs_device_minor;
+ }
+
kdev->parent = minor->dev->dev;
kdev->release = drm_sysfs_release;
dev_set_drvdata(kdev, minor);
--
2.25.1On 11/19, Oded Gabbay wrote:
> Now that we have the accel framework code ready, let's call the
> accel functions from all the appropriate places. These places are the
> drm module init/exit functions, and all the drm_minor handling
> functions.
Hi Oded,
The proposal overall LGTM, but I didn't manage to compile the kernel
with your patch series when DRM is enabled but accel support doesn't.
Multiple missing link errors...
Am I missing something? Can you take a look at it from this patch 3/4?
Thanks,
Melissa
>
> Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
> ---
> drivers/gpu/drm/drm_drv.c | 102 ++++++++++++++++++++++++++----------
> drivers/gpu/drm/drm_sysfs.c | 24 ++++++---
> 2 files changed, 91 insertions(+), 35 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
> index 8214a0b1ab7f..1aec019f6389 100644
> --- a/drivers/gpu/drm/drm_drv.c
> +++ b/drivers/gpu/drm/drm_drv.c
> @@ -35,6 +35,7 @@
> #include <linux/slab.h>
> #include <linux/srcu.h>
>
> +#include <drm/drm_accel.h>
> #include <drm/drm_cache.h>
> #include <drm/drm_client.h>
> #include <drm/drm_color_mgmt.h>
> @@ -90,6 +91,8 @@ static struct drm_minor **drm_minor_get_slot(struct drm_device *dev,
> return &dev->primary;
> case DRM_MINOR_RENDER:
> return &dev->render;
> + case DRM_MINOR_ACCEL:
> + return &dev->accel;
> default:
> BUG();
> }
> @@ -104,9 +107,13 @@ static void drm_minor_alloc_release(struct drm_device *dev, void *data)
>
> put_device(minor->kdev);
>
> - spin_lock_irqsave(&drm_minor_lock, flags);
> - idr_remove(&drm_minors_idr, minor->index);
> - spin_unlock_irqrestore(&drm_minor_lock, flags);
> + if (minor->type == DRM_MINOR_ACCEL) {
> + accel_minor_remove(minor->index);
> + } else {
> + spin_lock_irqsave(&drm_minor_lock, flags);
> + idr_remove(&drm_minors_idr, minor->index);
> + spin_unlock_irqrestore(&drm_minor_lock, flags);
> + }
> }
>
> static int drm_minor_alloc(struct drm_device *dev, unsigned int type)
> @@ -123,13 +130,17 @@ static int drm_minor_alloc(struct drm_device *dev, unsigned int type)
> minor->dev = dev;
>
> idr_preload(GFP_KERNEL);
> - spin_lock_irqsave(&drm_minor_lock, flags);
> - r = idr_alloc(&drm_minors_idr,
> - NULL,
> - 64 * type,
> - 64 * (type + 1),
> - GFP_NOWAIT);
> - spin_unlock_irqrestore(&drm_minor_lock, flags);
> + if (type == DRM_MINOR_ACCEL) {
> + r = accel_minor_alloc();
> + } else {
> + spin_lock_irqsave(&drm_minor_lock, flags);
> + r = idr_alloc(&drm_minors_idr,
> + NULL,
> + 64 * type,
> + 64 * (type + 1),
> + GFP_NOWAIT);
> + spin_unlock_irqrestore(&drm_minor_lock, flags);
> + }
> idr_preload_end();
>
> if (r < 0)
> @@ -161,10 +172,14 @@ static int drm_minor_register(struct drm_device *dev, unsigned int type)
> if (!minor)
> return 0;
>
> - ret = drm_debugfs_init(minor, minor->index, drm_debugfs_root);
> - if (ret) {
> - DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");
> - goto err_debugfs;
> + if (minor->type == DRM_MINOR_ACCEL) {
> + accel_debugfs_init(minor, minor->index);
> + } else {
> + ret = drm_debugfs_init(minor, minor->index, drm_debugfs_root);
> + if (ret) {
> + DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");
> + goto err_debugfs;
> + }
> }
>
> ret = device_add(minor->kdev);
> @@ -172,9 +187,13 @@ static int drm_minor_register(struct drm_device *dev, unsigned int type)
> goto err_debugfs;
>
> /* replace NULL with @minor so lookups will succeed from now on */
> - spin_lock_irqsave(&drm_minor_lock, flags);
> - idr_replace(&drm_minors_idr, minor, minor->index);
> - spin_unlock_irqrestore(&drm_minor_lock, flags);
> + if (minor->type == DRM_MINOR_ACCEL) {
> + accel_minor_replace(minor, minor->index);
> + } else {
> + spin_lock_irqsave(&drm_minor_lock, flags);
> + idr_replace(&drm_minors_idr, minor, minor->index);
> + spin_unlock_irqrestore(&drm_minor_lock, flags);
> + }
>
> DRM_DEBUG("new minor registered %d\n", minor->index);
> return 0;
> @@ -194,9 +213,13 @@ static void drm_minor_unregister(struct drm_device *dev, unsigned int type)
> return;
>
> /* replace @minor with NULL so lookups will fail from now on */
> - spin_lock_irqsave(&drm_minor_lock, flags);
> - idr_replace(&drm_minors_idr, NULL, minor->index);
> - spin_unlock_irqrestore(&drm_minor_lock, flags);
> + if (minor->type == DRM_MINOR_ACCEL) {
> + accel_minor_replace(NULL, minor->index);
> + } else {
> + spin_lock_irqsave(&drm_minor_lock, flags);
> + idr_replace(&drm_minors_idr, NULL, minor->index);
> + spin_unlock_irqrestore(&drm_minor_lock, flags);
> + }
>
> device_del(minor->kdev);
> dev_set_drvdata(minor->kdev, NULL); /* safety belt */
> @@ -603,6 +626,14 @@ static int drm_dev_init(struct drm_device *dev,
> /* no per-device feature limits by default */
> dev->driver_features = ~0u;
>
> + if (drm_core_check_feature(dev, DRIVER_COMPUTE_ACCEL) &&
> + (drm_core_check_feature(dev, DRIVER_RENDER) ||
> + drm_core_check_feature(dev, DRIVER_MODESET))) {
> +
> + DRM_ERROR("DRM driver can't be both a compute acceleration and graphics driver\n");
> + return -EINVAL;
> + }
> +
> drm_legacy_init_members(dev);
> INIT_LIST_HEAD(&dev->filelist);
> INIT_LIST_HEAD(&dev->filelist_internal);
> @@ -628,15 +659,21 @@ static int drm_dev_init(struct drm_device *dev,
>
> dev->anon_inode = inode;
>
> - if (drm_core_check_feature(dev, DRIVER_RENDER)) {
> - ret = drm_minor_alloc(dev, DRM_MINOR_RENDER);
> + if (drm_core_check_feature(dev, DRIVER_COMPUTE_ACCEL)) {
> + ret = drm_minor_alloc(dev, DRM_MINOR_ACCEL);
> if (ret)
> goto err;
> - }
> + } else {
> + if (drm_core_check_feature(dev, DRIVER_RENDER)) {
> + ret = drm_minor_alloc(dev, DRM_MINOR_RENDER);
> + if (ret)
> + goto err;
> + }
>
> - ret = drm_minor_alloc(dev, DRM_MINOR_PRIMARY);
> - if (ret)
> - goto err;
> + ret = drm_minor_alloc(dev, DRM_MINOR_PRIMARY);
> + if (ret)
> + goto err;
> + }
>
> ret = drm_legacy_create_map_hash(dev);
> if (ret)
> @@ -883,6 +920,10 @@ int drm_dev_register(struct drm_device *dev, unsigned long flags)
> if (ret)
> goto err_minors;
>
> + ret = drm_minor_register(dev, DRM_MINOR_ACCEL);
> + if (ret)
> + goto err_minors;
> +
> ret = create_compat_control_link(dev);
> if (ret)
> goto err_minors;
> @@ -902,12 +943,13 @@ int drm_dev_register(struct drm_device *dev, unsigned long flags)
> driver->name, driver->major, driver->minor,
> driver->patchlevel, driver->date,
> dev->dev ? dev_name(dev->dev) : "virtual device",
> - dev->primary->index);
> + dev->primary ? dev->primary->index : dev->accel->index);
>
> goto out_unlock;
>
> err_minors:
> remove_compat_control_link(dev);
> + drm_minor_unregister(dev, DRM_MINOR_ACCEL);
> drm_minor_unregister(dev, DRM_MINOR_PRIMARY);
> drm_minor_unregister(dev, DRM_MINOR_RENDER);
> out_unlock:
> @@ -950,6 +992,7 @@ void drm_dev_unregister(struct drm_device *dev)
> drm_legacy_rmmaps(dev);
>
> remove_compat_control_link(dev);
> + drm_minor_unregister(dev, DRM_MINOR_ACCEL);
> drm_minor_unregister(dev, DRM_MINOR_PRIMARY);
> drm_minor_unregister(dev, DRM_MINOR_RENDER);
> }
> @@ -1034,6 +1077,7 @@ static const struct file_operations drm_stub_fops = {
> static void drm_core_exit(void)
> {
> drm_privacy_screen_lookup_exit();
> + accel_core_exit();
> unregister_chrdev(DRM_MAJOR, "drm");
> debugfs_remove(drm_debugfs_root);
> drm_sysfs_destroy();
> @@ -1061,6 +1105,10 @@ static int __init drm_core_init(void)
> if (ret < 0)
> goto error;
>
> + ret = accel_core_init();
> + if (ret < 0)
> + goto error;
> +
> drm_privacy_screen_lookup_init();
>
> drm_core_init_complete = true;
> diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
> index 430e00b16eec..b8da978d85bb 100644
> --- a/drivers/gpu/drm/drm_sysfs.c
> +++ b/drivers/gpu/drm/drm_sysfs.c
> @@ -19,6 +19,7 @@
> #include <linux/kdev_t.h>
> #include <linux/slab.h>
>
> +#include <drm/drm_accel.h>
> #include <drm/drm_connector.h>
> #include <drm/drm_device.h>
> #include <drm/drm_file.h>
> @@ -471,19 +472,26 @@ struct device *drm_sysfs_minor_alloc(struct drm_minor *minor)
> struct device *kdev;
> int r;
>
> - if (minor->type == DRM_MINOR_RENDER)
> - minor_str = "renderD%d";
> - else
> - minor_str = "card%d";
> -
> kdev = kzalloc(sizeof(*kdev), GFP_KERNEL);
> if (!kdev)
> return ERR_PTR(-ENOMEM);
>
> device_initialize(kdev);
> - kdev->devt = MKDEV(DRM_MAJOR, minor->index);
> - kdev->class = drm_class;
> - kdev->type = &drm_sysfs_device_minor;
> +
> + if (minor->type == DRM_MINOR_ACCEL) {
> + minor_str = "accel%d";
> + accel_set_device_instance_params(kdev, minor->index);
> + } else {
> + if (minor->type == DRM_MINOR_RENDER)
> + minor_str = "renderD%d";
> + else
> + minor_str = "card%d";
> +
> + kdev->devt = MKDEV(DRM_MAJOR, minor->index);
> + kdev->class = drm_class;
> + kdev->type = &drm_sysfs_device_minor;
> + }
> +
> kdev->parent = minor->dev->dev;
> kdev->release = drm_sysfs_release;
> dev_set_drvdata(kdev, minor);
> --
> 2.25.1
>
On Tue, Nov 22, 2022 at 12:56 PM Melissa Wen <mwen@igalia.com> wrote:
>
> On 11/19, Oded Gabbay wrote:
> > Now that we have the accel framework code ready, let's call the
> > accel functions from all the appropriate places. These places are the
> > drm module init/exit functions, and all the drm_minor handling
> > functions.
>
> Hi Oded,
>
> The proposal overall LGTM, but I didn't manage to compile the kernel
> with your patch series when DRM is enabled but accel support doesn't.
> Multiple missing link errors...
>
> Am I missing something? Can you take a look at it from this patch 3/4?
>
> Thanks,
>
> Melissa
Looking at it now, thanks for letting me know.
Oded
> >
> > Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
> > ---
> > drivers/gpu/drm/drm_drv.c | 102 ++++++++++++++++++++++++++----------
> > drivers/gpu/drm/drm_sysfs.c | 24 ++++++---
> > 2 files changed, 91 insertions(+), 35 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
> > index 8214a0b1ab7f..1aec019f6389 100644
> > --- a/drivers/gpu/drm/drm_drv.c
> > +++ b/drivers/gpu/drm/drm_drv.c
> > @@ -35,6 +35,7 @@
> > #include <linux/slab.h>
> > #include <linux/srcu.h>
> >
> > +#include <drm/drm_accel.h>
> > #include <drm/drm_cache.h>
> > #include <drm/drm_client.h>
> > #include <drm/drm_color_mgmt.h>
> > @@ -90,6 +91,8 @@ static struct drm_minor **drm_minor_get_slot(struct drm_device *dev,
> > return &dev->primary;
> > case DRM_MINOR_RENDER:
> > return &dev->render;
> > + case DRM_MINOR_ACCEL:
> > + return &dev->accel;
> > default:
> > BUG();
> > }
> > @@ -104,9 +107,13 @@ static void drm_minor_alloc_release(struct drm_device *dev, void *data)
> >
> > put_device(minor->kdev);
> >
> > - spin_lock_irqsave(&drm_minor_lock, flags);
> > - idr_remove(&drm_minors_idr, minor->index);
> > - spin_unlock_irqrestore(&drm_minor_lock, flags);
> > + if (minor->type == DRM_MINOR_ACCEL) {
> > + accel_minor_remove(minor->index);
> > + } else {
> > + spin_lock_irqsave(&drm_minor_lock, flags);
> > + idr_remove(&drm_minors_idr, minor->index);
> > + spin_unlock_irqrestore(&drm_minor_lock, flags);
> > + }
> > }
> >
> > static int drm_minor_alloc(struct drm_device *dev, unsigned int type)
> > @@ -123,13 +130,17 @@ static int drm_minor_alloc(struct drm_device *dev, unsigned int type)
> > minor->dev = dev;
> >
> > idr_preload(GFP_KERNEL);
> > - spin_lock_irqsave(&drm_minor_lock, flags);
> > - r = idr_alloc(&drm_minors_idr,
> > - NULL,
> > - 64 * type,
> > - 64 * (type + 1),
> > - GFP_NOWAIT);
> > - spin_unlock_irqrestore(&drm_minor_lock, flags);
> > + if (type == DRM_MINOR_ACCEL) {
> > + r = accel_minor_alloc();
> > + } else {
> > + spin_lock_irqsave(&drm_minor_lock, flags);
> > + r = idr_alloc(&drm_minors_idr,
> > + NULL,
> > + 64 * type,
> > + 64 * (type + 1),
> > + GFP_NOWAIT);
> > + spin_unlock_irqrestore(&drm_minor_lock, flags);
> > + }
> > idr_preload_end();
> >
> > if (r < 0)
> > @@ -161,10 +172,14 @@ static int drm_minor_register(struct drm_device *dev, unsigned int type)
> > if (!minor)
> > return 0;
> >
> > - ret = drm_debugfs_init(minor, minor->index, drm_debugfs_root);
> > - if (ret) {
> > - DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");
> > - goto err_debugfs;
> > + if (minor->type == DRM_MINOR_ACCEL) {
> > + accel_debugfs_init(minor, minor->index);
> > + } else {
> > + ret = drm_debugfs_init(minor, minor->index, drm_debugfs_root);
> > + if (ret) {
> > + DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");
> > + goto err_debugfs;
> > + }
> > }
> >
> > ret = device_add(minor->kdev);
> > @@ -172,9 +187,13 @@ static int drm_minor_register(struct drm_device *dev, unsigned int type)
> > goto err_debugfs;
> >
> > /* replace NULL with @minor so lookups will succeed from now on */
> > - spin_lock_irqsave(&drm_minor_lock, flags);
> > - idr_replace(&drm_minors_idr, minor, minor->index);
> > - spin_unlock_irqrestore(&drm_minor_lock, flags);
> > + if (minor->type == DRM_MINOR_ACCEL) {
> > + accel_minor_replace(minor, minor->index);
> > + } else {
> > + spin_lock_irqsave(&drm_minor_lock, flags);
> > + idr_replace(&drm_minors_idr, minor, minor->index);
> > + spin_unlock_irqrestore(&drm_minor_lock, flags);
> > + }
> >
> > DRM_DEBUG("new minor registered %d\n", minor->index);
> > return 0;
> > @@ -194,9 +213,13 @@ static void drm_minor_unregister(struct drm_device *dev, unsigned int type)
> > return;
> >
> > /* replace @minor with NULL so lookups will fail from now on */
> > - spin_lock_irqsave(&drm_minor_lock, flags);
> > - idr_replace(&drm_minors_idr, NULL, minor->index);
> > - spin_unlock_irqrestore(&drm_minor_lock, flags);
> > + if (minor->type == DRM_MINOR_ACCEL) {
> > + accel_minor_replace(NULL, minor->index);
> > + } else {
> > + spin_lock_irqsave(&drm_minor_lock, flags);
> > + idr_replace(&drm_minors_idr, NULL, minor->index);
> > + spin_unlock_irqrestore(&drm_minor_lock, flags);
> > + }
> >
> > device_del(minor->kdev);
> > dev_set_drvdata(minor->kdev, NULL); /* safety belt */
> > @@ -603,6 +626,14 @@ static int drm_dev_init(struct drm_device *dev,
> > /* no per-device feature limits by default */
> > dev->driver_features = ~0u;
> >
> > + if (drm_core_check_feature(dev, DRIVER_COMPUTE_ACCEL) &&
> > + (drm_core_check_feature(dev, DRIVER_RENDER) ||
> > + drm_core_check_feature(dev, DRIVER_MODESET))) {
> > +
> > + DRM_ERROR("DRM driver can't be both a compute acceleration and graphics driver\n");
> > + return -EINVAL;
> > + }
> > +
> > drm_legacy_init_members(dev);
> > INIT_LIST_HEAD(&dev->filelist);
> > INIT_LIST_HEAD(&dev->filelist_internal);
> > @@ -628,15 +659,21 @@ static int drm_dev_init(struct drm_device *dev,
> >
> > dev->anon_inode = inode;
> >
> > - if (drm_core_check_feature(dev, DRIVER_RENDER)) {
> > - ret = drm_minor_alloc(dev, DRM_MINOR_RENDER);
> > + if (drm_core_check_feature(dev, DRIVER_COMPUTE_ACCEL)) {
> > + ret = drm_minor_alloc(dev, DRM_MINOR_ACCEL);
> > if (ret)
> > goto err;
> > - }
> > + } else {
> > + if (drm_core_check_feature(dev, DRIVER_RENDER)) {
> > + ret = drm_minor_alloc(dev, DRM_MINOR_RENDER);
> > + if (ret)
> > + goto err;
> > + }
> >
> > - ret = drm_minor_alloc(dev, DRM_MINOR_PRIMARY);
> > - if (ret)
> > - goto err;
> > + ret = drm_minor_alloc(dev, DRM_MINOR_PRIMARY);
> > + if (ret)
> > + goto err;
> > + }
> >
> > ret = drm_legacy_create_map_hash(dev);
> > if (ret)
> > @@ -883,6 +920,10 @@ int drm_dev_register(struct drm_device *dev, unsigned long flags)
> > if (ret)
> > goto err_minors;
> >
> > + ret = drm_minor_register(dev, DRM_MINOR_ACCEL);
> > + if (ret)
> > + goto err_minors;
> > +
> > ret = create_compat_control_link(dev);
> > if (ret)
> > goto err_minors;
> > @@ -902,12 +943,13 @@ int drm_dev_register(struct drm_device *dev, unsigned long flags)
> > driver->name, driver->major, driver->minor,
> > driver->patchlevel, driver->date,
> > dev->dev ? dev_name(dev->dev) : "virtual device",
> > - dev->primary->index);
> > + dev->primary ? dev->primary->index : dev->accel->index);
> >
> > goto out_unlock;
> >
> > err_minors:
> > remove_compat_control_link(dev);
> > + drm_minor_unregister(dev, DRM_MINOR_ACCEL);
> > drm_minor_unregister(dev, DRM_MINOR_PRIMARY);
> > drm_minor_unregister(dev, DRM_MINOR_RENDER);
> > out_unlock:
> > @@ -950,6 +992,7 @@ void drm_dev_unregister(struct drm_device *dev)
> > drm_legacy_rmmaps(dev);
> >
> > remove_compat_control_link(dev);
> > + drm_minor_unregister(dev, DRM_MINOR_ACCEL);
> > drm_minor_unregister(dev, DRM_MINOR_PRIMARY);
> > drm_minor_unregister(dev, DRM_MINOR_RENDER);
> > }
> > @@ -1034,6 +1077,7 @@ static const struct file_operations drm_stub_fops = {
> > static void drm_core_exit(void)
> > {
> > drm_privacy_screen_lookup_exit();
> > + accel_core_exit();
> > unregister_chrdev(DRM_MAJOR, "drm");
> > debugfs_remove(drm_debugfs_root);
> > drm_sysfs_destroy();
> > @@ -1061,6 +1105,10 @@ static int __init drm_core_init(void)
> > if (ret < 0)
> > goto error;
> >
> > + ret = accel_core_init();
> > + if (ret < 0)
> > + goto error;
> > +
> > drm_privacy_screen_lookup_init();
> >
> > drm_core_init_complete = true;
> > diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
> > index 430e00b16eec..b8da978d85bb 100644
> > --- a/drivers/gpu/drm/drm_sysfs.c
> > +++ b/drivers/gpu/drm/drm_sysfs.c
> > @@ -19,6 +19,7 @@
> > #include <linux/kdev_t.h>
> > #include <linux/slab.h>
> >
> > +#include <drm/drm_accel.h>
> > #include <drm/drm_connector.h>
> > #include <drm/drm_device.h>
> > #include <drm/drm_file.h>
> > @@ -471,19 +472,26 @@ struct device *drm_sysfs_minor_alloc(struct drm_minor *minor)
> > struct device *kdev;
> > int r;
> >
> > - if (minor->type == DRM_MINOR_RENDER)
> > - minor_str = "renderD%d";
> > - else
> > - minor_str = "card%d";
> > -
> > kdev = kzalloc(sizeof(*kdev), GFP_KERNEL);
> > if (!kdev)
> > return ERR_PTR(-ENOMEM);
> >
> > device_initialize(kdev);
> > - kdev->devt = MKDEV(DRM_MAJOR, minor->index);
> > - kdev->class = drm_class;
> > - kdev->type = &drm_sysfs_device_minor;
> > +
> > + if (minor->type == DRM_MINOR_ACCEL) {
> > + minor_str = "accel%d";
> > + accel_set_device_instance_params(kdev, minor->index);
> > + } else {
> > + if (minor->type == DRM_MINOR_RENDER)
> > + minor_str = "renderD%d";
> > + else
> > + minor_str = "card%d";
> > +
> > + kdev->devt = MKDEV(DRM_MAJOR, minor->index);
> > + kdev->class = drm_class;
> > + kdev->type = &drm_sysfs_device_minor;
> > + }
> > +
> > kdev->parent = minor->dev->dev;
> > kdev->release = drm_sysfs_release;
> > dev_set_drvdata(kdev, minor);
> > --
> > 2.25.1
> >
On Tue, Nov 22, 2022 at 12:59 PM Oded Gabbay <ogabbay@kernel.org> wrote:
>
> On Tue, Nov 22, 2022 at 12:56 PM Melissa Wen <mwen@igalia.com> wrote:
> >
> > On 11/19, Oded Gabbay wrote:
> > > Now that we have the accel framework code ready, let's call the
> > > accel functions from all the appropriate places. These places are the
> > > drm module init/exit functions, and all the drm_minor handling
> > > functions.
> >
> > Hi Oded,
> >
> > The proposal overall LGTM, but I didn't manage to compile the kernel
> > with your patch series when DRM is enabled but accel support doesn't.
> > Multiple missing link errors...
> >
> > Am I missing something? Can you take a look at it from this patch 3/4?
> >
> > Thanks,
> >
> > Melissa
> Looking at it now, thanks for letting me know.
> Oded
Found the issue, missing } at end of accel_debugfs_init() in
drm_accel.h. Only compiles when accel support isn't compiled in.
I'll fix it before sending the PR to Dave.
Much appreciated :)
Oded
>
> > >
> > > Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
> > > ---
> > > drivers/gpu/drm/drm_drv.c | 102 ++++++++++++++++++++++++++----------
> > > drivers/gpu/drm/drm_sysfs.c | 24 ++++++---
> > > 2 files changed, 91 insertions(+), 35 deletions(-)
> > >
> > > diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
> > > index 8214a0b1ab7f..1aec019f6389 100644
> > > --- a/drivers/gpu/drm/drm_drv.c
> > > +++ b/drivers/gpu/drm/drm_drv.c
> > > @@ -35,6 +35,7 @@
> > > #include <linux/slab.h>
> > > #include <linux/srcu.h>
> > >
> > > +#include <drm/drm_accel.h>
> > > #include <drm/drm_cache.h>
> > > #include <drm/drm_client.h>
> > > #include <drm/drm_color_mgmt.h>
> > > @@ -90,6 +91,8 @@ static struct drm_minor **drm_minor_get_slot(struct drm_device *dev,
> > > return &dev->primary;
> > > case DRM_MINOR_RENDER:
> > > return &dev->render;
> > > + case DRM_MINOR_ACCEL:
> > > + return &dev->accel;
> > > default:
> > > BUG();
> > > }
> > > @@ -104,9 +107,13 @@ static void drm_minor_alloc_release(struct drm_device *dev, void *data)
> > >
> > > put_device(minor->kdev);
> > >
> > > - spin_lock_irqsave(&drm_minor_lock, flags);
> > > - idr_remove(&drm_minors_idr, minor->index);
> > > - spin_unlock_irqrestore(&drm_minor_lock, flags);
> > > + if (minor->type == DRM_MINOR_ACCEL) {
> > > + accel_minor_remove(minor->index);
> > > + } else {
> > > + spin_lock_irqsave(&drm_minor_lock, flags);
> > > + idr_remove(&drm_minors_idr, minor->index);
> > > + spin_unlock_irqrestore(&drm_minor_lock, flags);
> > > + }
> > > }
> > >
> > > static int drm_minor_alloc(struct drm_device *dev, unsigned int type)
> > > @@ -123,13 +130,17 @@ static int drm_minor_alloc(struct drm_device *dev, unsigned int type)
> > > minor->dev = dev;
> > >
> > > idr_preload(GFP_KERNEL);
> > > - spin_lock_irqsave(&drm_minor_lock, flags);
> > > - r = idr_alloc(&drm_minors_idr,
> > > - NULL,
> > > - 64 * type,
> > > - 64 * (type + 1),
> > > - GFP_NOWAIT);
> > > - spin_unlock_irqrestore(&drm_minor_lock, flags);
> > > + if (type == DRM_MINOR_ACCEL) {
> > > + r = accel_minor_alloc();
> > > + } else {
> > > + spin_lock_irqsave(&drm_minor_lock, flags);
> > > + r = idr_alloc(&drm_minors_idr,
> > > + NULL,
> > > + 64 * type,
> > > + 64 * (type + 1),
> > > + GFP_NOWAIT);
> > > + spin_unlock_irqrestore(&drm_minor_lock, flags);
> > > + }
> > > idr_preload_end();
> > >
> > > if (r < 0)
> > > @@ -161,10 +172,14 @@ static int drm_minor_register(struct drm_device *dev, unsigned int type)
> > > if (!minor)
> > > return 0;
> > >
> > > - ret = drm_debugfs_init(minor, minor->index, drm_debugfs_root);
> > > - if (ret) {
> > > - DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");
> > > - goto err_debugfs;
> > > + if (minor->type == DRM_MINOR_ACCEL) {
> > > + accel_debugfs_init(minor, minor->index);
> > > + } else {
> > > + ret = drm_debugfs_init(minor, minor->index, drm_debugfs_root);
> > > + if (ret) {
> > > + DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");
> > > + goto err_debugfs;
> > > + }
> > > }
> > >
> > > ret = device_add(minor->kdev);
> > > @@ -172,9 +187,13 @@ static int drm_minor_register(struct drm_device *dev, unsigned int type)
> > > goto err_debugfs;
> > >
> > > /* replace NULL with @minor so lookups will succeed from now on */
> > > - spin_lock_irqsave(&drm_minor_lock, flags);
> > > - idr_replace(&drm_minors_idr, minor, minor->index);
> > > - spin_unlock_irqrestore(&drm_minor_lock, flags);
> > > + if (minor->type == DRM_MINOR_ACCEL) {
> > > + accel_minor_replace(minor, minor->index);
> > > + } else {
> > > + spin_lock_irqsave(&drm_minor_lock, flags);
> > > + idr_replace(&drm_minors_idr, minor, minor->index);
> > > + spin_unlock_irqrestore(&drm_minor_lock, flags);
> > > + }
> > >
> > > DRM_DEBUG("new minor registered %d\n", minor->index);
> > > return 0;
> > > @@ -194,9 +213,13 @@ static void drm_minor_unregister(struct drm_device *dev, unsigned int type)
> > > return;
> > >
> > > /* replace @minor with NULL so lookups will fail from now on */
> > > - spin_lock_irqsave(&drm_minor_lock, flags);
> > > - idr_replace(&drm_minors_idr, NULL, minor->index);
> > > - spin_unlock_irqrestore(&drm_minor_lock, flags);
> > > + if (minor->type == DRM_MINOR_ACCEL) {
> > > + accel_minor_replace(NULL, minor->index);
> > > + } else {
> > > + spin_lock_irqsave(&drm_minor_lock, flags);
> > > + idr_replace(&drm_minors_idr, NULL, minor->index);
> > > + spin_unlock_irqrestore(&drm_minor_lock, flags);
> > > + }
> > >
> > > device_del(minor->kdev);
> > > dev_set_drvdata(minor->kdev, NULL); /* safety belt */
> > > @@ -603,6 +626,14 @@ static int drm_dev_init(struct drm_device *dev,
> > > /* no per-device feature limits by default */
> > > dev->driver_features = ~0u;
> > >
> > > + if (drm_core_check_feature(dev, DRIVER_COMPUTE_ACCEL) &&
> > > + (drm_core_check_feature(dev, DRIVER_RENDER) ||
> > > + drm_core_check_feature(dev, DRIVER_MODESET))) {
> > > +
> > > + DRM_ERROR("DRM driver can't be both a compute acceleration and graphics driver\n");
> > > + return -EINVAL;
> > > + }
> > > +
> > > drm_legacy_init_members(dev);
> > > INIT_LIST_HEAD(&dev->filelist);
> > > INIT_LIST_HEAD(&dev->filelist_internal);
> > > @@ -628,15 +659,21 @@ static int drm_dev_init(struct drm_device *dev,
> > >
> > > dev->anon_inode = inode;
> > >
> > > - if (drm_core_check_feature(dev, DRIVER_RENDER)) {
> > > - ret = drm_minor_alloc(dev, DRM_MINOR_RENDER);
> > > + if (drm_core_check_feature(dev, DRIVER_COMPUTE_ACCEL)) {
> > > + ret = drm_minor_alloc(dev, DRM_MINOR_ACCEL);
> > > if (ret)
> > > goto err;
> > > - }
> > > + } else {
> > > + if (drm_core_check_feature(dev, DRIVER_RENDER)) {
> > > + ret = drm_minor_alloc(dev, DRM_MINOR_RENDER);
> > > + if (ret)
> > > + goto err;
> > > + }
> > >
> > > - ret = drm_minor_alloc(dev, DRM_MINOR_PRIMARY);
> > > - if (ret)
> > > - goto err;
> > > + ret = drm_minor_alloc(dev, DRM_MINOR_PRIMARY);
> > > + if (ret)
> > > + goto err;
> > > + }
> > >
> > > ret = drm_legacy_create_map_hash(dev);
> > > if (ret)
> > > @@ -883,6 +920,10 @@ int drm_dev_register(struct drm_device *dev, unsigned long flags)
> > > if (ret)
> > > goto err_minors;
> > >
> > > + ret = drm_minor_register(dev, DRM_MINOR_ACCEL);
> > > + if (ret)
> > > + goto err_minors;
> > > +
> > > ret = create_compat_control_link(dev);
> > > if (ret)
> > > goto err_minors;
> > > @@ -902,12 +943,13 @@ int drm_dev_register(struct drm_device *dev, unsigned long flags)
> > > driver->name, driver->major, driver->minor,
> > > driver->patchlevel, driver->date,
> > > dev->dev ? dev_name(dev->dev) : "virtual device",
> > > - dev->primary->index);
> > > + dev->primary ? dev->primary->index : dev->accel->index);
> > >
> > > goto out_unlock;
> > >
> > > err_minors:
> > > remove_compat_control_link(dev);
> > > + drm_minor_unregister(dev, DRM_MINOR_ACCEL);
> > > drm_minor_unregister(dev, DRM_MINOR_PRIMARY);
> > > drm_minor_unregister(dev, DRM_MINOR_RENDER);
> > > out_unlock:
> > > @@ -950,6 +992,7 @@ void drm_dev_unregister(struct drm_device *dev)
> > > drm_legacy_rmmaps(dev);
> > >
> > > remove_compat_control_link(dev);
> > > + drm_minor_unregister(dev, DRM_MINOR_ACCEL);
> > > drm_minor_unregister(dev, DRM_MINOR_PRIMARY);
> > > drm_minor_unregister(dev, DRM_MINOR_RENDER);
> > > }
> > > @@ -1034,6 +1077,7 @@ static const struct file_operations drm_stub_fops = {
> > > static void drm_core_exit(void)
> > > {
> > > drm_privacy_screen_lookup_exit();
> > > + accel_core_exit();
> > > unregister_chrdev(DRM_MAJOR, "drm");
> > > debugfs_remove(drm_debugfs_root);
> > > drm_sysfs_destroy();
> > > @@ -1061,6 +1105,10 @@ static int __init drm_core_init(void)
> > > if (ret < 0)
> > > goto error;
> > >
> > > + ret = accel_core_init();
> > > + if (ret < 0)
> > > + goto error;
> > > +
> > > drm_privacy_screen_lookup_init();
> > >
> > > drm_core_init_complete = true;
> > > diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
> > > index 430e00b16eec..b8da978d85bb 100644
> > > --- a/drivers/gpu/drm/drm_sysfs.c
> > > +++ b/drivers/gpu/drm/drm_sysfs.c
> > > @@ -19,6 +19,7 @@
> > > #include <linux/kdev_t.h>
> > > #include <linux/slab.h>
> > >
> > > +#include <drm/drm_accel.h>
> > > #include <drm/drm_connector.h>
> > > #include <drm/drm_device.h>
> > > #include <drm/drm_file.h>
> > > @@ -471,19 +472,26 @@ struct device *drm_sysfs_minor_alloc(struct drm_minor *minor)
> > > struct device *kdev;
> > > int r;
> > >
> > > - if (minor->type == DRM_MINOR_RENDER)
> > > - minor_str = "renderD%d";
> > > - else
> > > - minor_str = "card%d";
> > > -
> > > kdev = kzalloc(sizeof(*kdev), GFP_KERNEL);
> > > if (!kdev)
> > > return ERR_PTR(-ENOMEM);
> > >
> > > device_initialize(kdev);
> > > - kdev->devt = MKDEV(DRM_MAJOR, minor->index);
> > > - kdev->class = drm_class;
> > > - kdev->type = &drm_sysfs_device_minor;
> > > +
> > > + if (minor->type == DRM_MINOR_ACCEL) {
> > > + minor_str = "accel%d";
> > > + accel_set_device_instance_params(kdev, minor->index);
> > > + } else {
> > > + if (minor->type == DRM_MINOR_RENDER)
> > > + minor_str = "renderD%d";
> > > + else
> > > + minor_str = "card%d";
> > > +
> > > + kdev->devt = MKDEV(DRM_MAJOR, minor->index);
> > > + kdev->class = drm_class;
> > > + kdev->type = &drm_sysfs_device_minor;
> > > + }
> > > +
> > > kdev->parent = minor->dev->dev;
> > > kdev->release = drm_sysfs_release;
> > > dev_set_drvdata(kdev, minor);
> > > --
> > > 2.25.1
> > >
11/22, Oded Gabbay wrote:
> On Tue, Nov 22, 2022 at 12:59 PM Oded Gabbay <ogabbay@kernel.org> wrote:
> >
> > On Tue, Nov 22, 2022 at 12:56 PM Melissa Wen <mwen@igalia.com> wrote:
> > >
> > > On 11/19, Oded Gabbay wrote:
> > > > Now that we have the accel framework code ready, let's call the
> > > > accel functions from all the appropriate places. These places are the
> > > > drm module init/exit functions, and all the drm_minor handling
> > > > functions.
> > >
> > > Hi Oded,
> > >
> > > The proposal overall LGTM, but I didn't manage to compile the kernel
> > > with your patch series when DRM is enabled but accel support doesn't.
> > > Multiple missing link errors...
> > >
> > > Am I missing something? Can you take a look at it from this patch 3/4?
> > >
> > > Thanks,
> > >
> > > Melissa
> > Looking at it now, thanks for letting me know.
> > Oded
> Found the issue, missing } at end of accel_debugfs_init() in
> drm_accel.h. Only compiles when accel support isn't compiled in.
> I'll fix it before sending the PR to Dave.
> Much appreciated :)
> Oded
Oh, great! Just checked here and everything is fine now.
With that, you can add my r-b for the entire series too
Reviewed-by: Melissa Wen <mwen@igalia.com>
Thanks for working on it,
Melissa
>
> >
> > > >
> > > > Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
> > > > ---
> > > > drivers/gpu/drm/drm_drv.c | 102 ++++++++++++++++++++++++++----------
> > > > drivers/gpu/drm/drm_sysfs.c | 24 ++++++---
> > > > 2 files changed, 91 insertions(+), 35 deletions(-)
> > > >
> > > > diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
> > > > index 8214a0b1ab7f..1aec019f6389 100644
> > > > --- a/drivers/gpu/drm/drm_drv.c
> > > > +++ b/drivers/gpu/drm/drm_drv.c
> > > > @@ -35,6 +35,7 @@
> > > > #include <linux/slab.h>
> > > > #include <linux/srcu.h>
> > > >
> > > > +#include <drm/drm_accel.h>
> > > > #include <drm/drm_cache.h>
> > > > #include <drm/drm_client.h>
> > > > #include <drm/drm_color_mgmt.h>
> > > > @@ -90,6 +91,8 @@ static struct drm_minor **drm_minor_get_slot(struct drm_device *dev,
> > > > return &dev->primary;
> > > > case DRM_MINOR_RENDER:
> > > > return &dev->render;
> > > > + case DRM_MINOR_ACCEL:
> > > > + return &dev->accel;
> > > > default:
> > > > BUG();
> > > > }
> > > > @@ -104,9 +107,13 @@ static void drm_minor_alloc_release(struct drm_device *dev, void *data)
> > > >
> > > > put_device(minor->kdev);
> > > >
> > > > - spin_lock_irqsave(&drm_minor_lock, flags);
> > > > - idr_remove(&drm_minors_idr, minor->index);
> > > > - spin_unlock_irqrestore(&drm_minor_lock, flags);
> > > > + if (minor->type == DRM_MINOR_ACCEL) {
> > > > + accel_minor_remove(minor->index);
> > > > + } else {
> > > > + spin_lock_irqsave(&drm_minor_lock, flags);
> > > > + idr_remove(&drm_minors_idr, minor->index);
> > > > + spin_unlock_irqrestore(&drm_minor_lock, flags);
> > > > + }
> > > > }
> > > >
> > > > static int drm_minor_alloc(struct drm_device *dev, unsigned int type)
> > > > @@ -123,13 +130,17 @@ static int drm_minor_alloc(struct drm_device *dev, unsigned int type)
> > > > minor->dev = dev;
> > > >
> > > > idr_preload(GFP_KERNEL);
> > > > - spin_lock_irqsave(&drm_minor_lock, flags);
> > > > - r = idr_alloc(&drm_minors_idr,
> > > > - NULL,
> > > > - 64 * type,
> > > > - 64 * (type + 1),
> > > > - GFP_NOWAIT);
> > > > - spin_unlock_irqrestore(&drm_minor_lock, flags);
> > > > + if (type == DRM_MINOR_ACCEL) {
> > > > + r = accel_minor_alloc();
> > > > + } else {
> > > > + spin_lock_irqsave(&drm_minor_lock, flags);
> > > > + r = idr_alloc(&drm_minors_idr,
> > > > + NULL,
> > > > + 64 * type,
> > > > + 64 * (type + 1),
> > > > + GFP_NOWAIT);
> > > > + spin_unlock_irqrestore(&drm_minor_lock, flags);
> > > > + }
> > > > idr_preload_end();
> > > >
> > > > if (r < 0)
> > > > @@ -161,10 +172,14 @@ static int drm_minor_register(struct drm_device *dev, unsigned int type)
> > > > if (!minor)
> > > > return 0;
> > > >
> > > > - ret = drm_debugfs_init(minor, minor->index, drm_debugfs_root);
> > > > - if (ret) {
> > > > - DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");
> > > > - goto err_debugfs;
> > > > + if (minor->type == DRM_MINOR_ACCEL) {
> > > > + accel_debugfs_init(minor, minor->index);
> > > > + } else {
> > > > + ret = drm_debugfs_init(minor, minor->index, drm_debugfs_root);
> > > > + if (ret) {
> > > > + DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n");
> > > > + goto err_debugfs;
> > > > + }
> > > > }
> > > >
> > > > ret = device_add(minor->kdev);
> > > > @@ -172,9 +187,13 @@ static int drm_minor_register(struct drm_device *dev, unsigned int type)
> > > > goto err_debugfs;
> > > >
> > > > /* replace NULL with @minor so lookups will succeed from now on */
> > > > - spin_lock_irqsave(&drm_minor_lock, flags);
> > > > - idr_replace(&drm_minors_idr, minor, minor->index);
> > > > - spin_unlock_irqrestore(&drm_minor_lock, flags);
> > > > + if (minor->type == DRM_MINOR_ACCEL) {
> > > > + accel_minor_replace(minor, minor->index);
> > > > + } else {
> > > > + spin_lock_irqsave(&drm_minor_lock, flags);
> > > > + idr_replace(&drm_minors_idr, minor, minor->index);
> > > > + spin_unlock_irqrestore(&drm_minor_lock, flags);
> > > > + }
> > > >
> > > > DRM_DEBUG("new minor registered %d\n", minor->index);
> > > > return 0;
> > > > @@ -194,9 +213,13 @@ static void drm_minor_unregister(struct drm_device *dev, unsigned int type)
> > > > return;
> > > >
> > > > /* replace @minor with NULL so lookups will fail from now on */
> > > > - spin_lock_irqsave(&drm_minor_lock, flags);
> > > > - idr_replace(&drm_minors_idr, NULL, minor->index);
> > > > - spin_unlock_irqrestore(&drm_minor_lock, flags);
> > > > + if (minor->type == DRM_MINOR_ACCEL) {
> > > > + accel_minor_replace(NULL, minor->index);
> > > > + } else {
> > > > + spin_lock_irqsave(&drm_minor_lock, flags);
> > > > + idr_replace(&drm_minors_idr, NULL, minor->index);
> > > > + spin_unlock_irqrestore(&drm_minor_lock, flags);
> > > > + }
> > > >
> > > > device_del(minor->kdev);
> > > > dev_set_drvdata(minor->kdev, NULL); /* safety belt */
> > > > @@ -603,6 +626,14 @@ static int drm_dev_init(struct drm_device *dev,
> > > > /* no per-device feature limits by default */
> > > > dev->driver_features = ~0u;
> > > >
> > > > + if (drm_core_check_feature(dev, DRIVER_COMPUTE_ACCEL) &&
> > > > + (drm_core_check_feature(dev, DRIVER_RENDER) ||
> > > > + drm_core_check_feature(dev, DRIVER_MODESET))) {
> > > > +
> > > > + DRM_ERROR("DRM driver can't be both a compute acceleration and graphics driver\n");
> > > > + return -EINVAL;
> > > > + }
> > > > +
> > > > drm_legacy_init_members(dev);
> > > > INIT_LIST_HEAD(&dev->filelist);
> > > > INIT_LIST_HEAD(&dev->filelist_internal);
> > > > @@ -628,15 +659,21 @@ static int drm_dev_init(struct drm_device *dev,
> > > >
> > > > dev->anon_inode = inode;
> > > >
> > > > - if (drm_core_check_feature(dev, DRIVER_RENDER)) {
> > > > - ret = drm_minor_alloc(dev, DRM_MINOR_RENDER);
> > > > + if (drm_core_check_feature(dev, DRIVER_COMPUTE_ACCEL)) {
> > > > + ret = drm_minor_alloc(dev, DRM_MINOR_ACCEL);
> > > > if (ret)
> > > > goto err;
> > > > - }
> > > > + } else {
> > > > + if (drm_core_check_feature(dev, DRIVER_RENDER)) {
> > > > + ret = drm_minor_alloc(dev, DRM_MINOR_RENDER);
> > > > + if (ret)
> > > > + goto err;
> > > > + }
> > > >
> > > > - ret = drm_minor_alloc(dev, DRM_MINOR_PRIMARY);
> > > > - if (ret)
> > > > - goto err;
> > > > + ret = drm_minor_alloc(dev, DRM_MINOR_PRIMARY);
> > > > + if (ret)
> > > > + goto err;
> > > > + }
> > > >
> > > > ret = drm_legacy_create_map_hash(dev);
> > > > if (ret)
> > > > @@ -883,6 +920,10 @@ int drm_dev_register(struct drm_device *dev, unsigned long flags)
> > > > if (ret)
> > > > goto err_minors;
> > > >
> > > > + ret = drm_minor_register(dev, DRM_MINOR_ACCEL);
> > > > + if (ret)
> > > > + goto err_minors;
> > > > +
> > > > ret = create_compat_control_link(dev);
> > > > if (ret)
> > > > goto err_minors;
> > > > @@ -902,12 +943,13 @@ int drm_dev_register(struct drm_device *dev, unsigned long flags)
> > > > driver->name, driver->major, driver->minor,
> > > > driver->patchlevel, driver->date,
> > > > dev->dev ? dev_name(dev->dev) : "virtual device",
> > > > - dev->primary->index);
> > > > + dev->primary ? dev->primary->index : dev->accel->index);
> > > >
> > > > goto out_unlock;
> > > >
> > > > err_minors:
> > > > remove_compat_control_link(dev);
> > > > + drm_minor_unregister(dev, DRM_MINOR_ACCEL);
> > > > drm_minor_unregister(dev, DRM_MINOR_PRIMARY);
> > > > drm_minor_unregister(dev, DRM_MINOR_RENDER);
> > > > out_unlock:
> > > > @@ -950,6 +992,7 @@ void drm_dev_unregister(struct drm_device *dev)
> > > > drm_legacy_rmmaps(dev);
> > > >
> > > > remove_compat_control_link(dev);
> > > > + drm_minor_unregister(dev, DRM_MINOR_ACCEL);
> > > > drm_minor_unregister(dev, DRM_MINOR_PRIMARY);
> > > > drm_minor_unregister(dev, DRM_MINOR_RENDER);
> > > > }
> > > > @@ -1034,6 +1077,7 @@ static const struct file_operations drm_stub_fops = {
> > > > static void drm_core_exit(void)
> > > > {
> > > > drm_privacy_screen_lookup_exit();
> > > > + accel_core_exit();
> > > > unregister_chrdev(DRM_MAJOR, "drm");
> > > > debugfs_remove(drm_debugfs_root);
> > > > drm_sysfs_destroy();
> > > > @@ -1061,6 +1105,10 @@ static int __init drm_core_init(void)
> > > > if (ret < 0)
> > > > goto error;
> > > >
> > > > + ret = accel_core_init();
> > > > + if (ret < 0)
> > > > + goto error;
> > > > +
> > > > drm_privacy_screen_lookup_init();
> > > >
> > > > drm_core_init_complete = true;
> > > > diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
> > > > index 430e00b16eec..b8da978d85bb 100644
> > > > --- a/drivers/gpu/drm/drm_sysfs.c
> > > > +++ b/drivers/gpu/drm/drm_sysfs.c
> > > > @@ -19,6 +19,7 @@
> > > > #include <linux/kdev_t.h>
> > > > #include <linux/slab.h>
> > > >
> > > > +#include <drm/drm_accel.h>
> > > > #include <drm/drm_connector.h>
> > > > #include <drm/drm_device.h>
> > > > #include <drm/drm_file.h>
> > > > @@ -471,19 +472,26 @@ struct device *drm_sysfs_minor_alloc(struct drm_minor *minor)
> > > > struct device *kdev;
> > > > int r;
> > > >
> > > > - if (minor->type == DRM_MINOR_RENDER)
> > > > - minor_str = "renderD%d";
> > > > - else
> > > > - minor_str = "card%d";
> > > > -
> > > > kdev = kzalloc(sizeof(*kdev), GFP_KERNEL);
> > > > if (!kdev)
> > > > return ERR_PTR(-ENOMEM);
> > > >
> > > > device_initialize(kdev);
> > > > - kdev->devt = MKDEV(DRM_MAJOR, minor->index);
> > > > - kdev->class = drm_class;
> > > > - kdev->type = &drm_sysfs_device_minor;
> > > > +
> > > > + if (minor->type == DRM_MINOR_ACCEL) {
> > > > + minor_str = "accel%d";
> > > > + accel_set_device_instance_params(kdev, minor->index);
> > > > + } else {
> > > > + if (minor->type == DRM_MINOR_RENDER)
> > > > + minor_str = "renderD%d";
> > > > + else
> > > > + minor_str = "card%d";
> > > > +
> > > > + kdev->devt = MKDEV(DRM_MAJOR, minor->index);
> > > > + kdev->class = drm_class;
> > > > + kdev->type = &drm_sysfs_device_minor;
> > > > + }
> > > > +
> > > > kdev->parent = minor->dev->dev;
> > > > kdev->release = drm_sysfs_release;
> > > > dev_set_drvdata(kdev, minor);
> > > > --
> > > > 2.25.1
> > > >
© 2016 - 2026 Red Hat, Inc.