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path: root/drivers/gpu/drm/drm_drv.c
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Diffstat (limited to 'drivers/gpu/drm/drm_drv.c')
-rw-r--r--drivers/gpu/drm/drm_drv.c128
1 files changed, 57 insertions, 71 deletions
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 766c46875a2..271835a7157 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -47,6 +47,7 @@
*/
#include <linux/debugfs.h>
+#include <linux/slab.h>
#include "drmP.h"
#include "drm_core.h"
@@ -54,6 +55,9 @@
static int drm_version(struct drm_device *dev, void *data,
struct drm_file *file_priv);
+#define DRM_IOCTL_DEF(ioctl, _func, _flags) \
+ [DRM_IOCTL_NR(ioctl)] = {.cmd = ioctl, .func = _func, .flags = _flags, .cmd_drv = 0}
+
/** Ioctl table */
static struct drm_ioctl_desc drm_ioctls[] = {
DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, 0),
@@ -87,8 +91,8 @@ static struct drm_ioctl_desc drm_ioctls[] = {
DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH),
- DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
- DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+ DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+ DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH),
DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH),
@@ -123,30 +127,30 @@ static struct drm_ioctl_desc drm_ioctls[] = {
DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0),
- DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_update_drawable_info, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
-
- DRM_IOCTL_DEF(DRM_IOCTL_GEM_CLOSE, drm_gem_close_ioctl, 0),
- DRM_IOCTL_DEF(DRM_IOCTL_GEM_FLINK, drm_gem_flink_ioctl, DRM_AUTH),
- DRM_IOCTL_DEF(DRM_IOCTL_GEM_OPEN, drm_gem_open_ioctl, DRM_AUTH),
-
- DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETRESOURCES, drm_mode_getresources, DRM_MASTER|DRM_CONTROL_ALLOW),
- DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCRTC, drm_mode_getcrtc, DRM_MASTER|DRM_CONTROL_ALLOW),
- DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETCRTC, drm_mode_setcrtc, DRM_MASTER|DRM_CONTROL_ALLOW),
- DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR, drm_mode_cursor_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW),
- DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETGAMMA, drm_mode_gamma_get_ioctl, DRM_MASTER),
- DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETGAMMA, drm_mode_gamma_set_ioctl, DRM_MASTER),
- DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETENCODER, drm_mode_getencoder, DRM_MASTER|DRM_CONTROL_ALLOW),
- DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCONNECTOR, drm_mode_getconnector, DRM_MASTER|DRM_CONTROL_ALLOW),
- DRM_IOCTL_DEF(DRM_IOCTL_MODE_ATTACHMODE, drm_mode_attachmode_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW),
- DRM_IOCTL_DEF(DRM_IOCTL_MODE_DETACHMODE, drm_mode_detachmode_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW),
- DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPERTY, drm_mode_getproperty_ioctl, DRM_MASTER | DRM_CONTROL_ALLOW),
- DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPROPERTY, drm_mode_connector_property_set_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW),
- DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPBLOB, drm_mode_getblob_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW),
- DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETFB, drm_mode_getfb, DRM_MASTER|DRM_CONTROL_ALLOW),
- DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB, drm_mode_addfb, DRM_MASTER|DRM_CONTROL_ALLOW),
- DRM_IOCTL_DEF(DRM_IOCTL_MODE_RMFB, drm_mode_rmfb, DRM_MASTER|DRM_CONTROL_ALLOW),
- DRM_IOCTL_DEF(DRM_IOCTL_MODE_PAGE_FLIP, drm_mode_page_flip_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW),
- DRM_IOCTL_DEF(DRM_IOCTL_MODE_DIRTYFB, drm_mode_dirtyfb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW)
+ DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+
+ DRM_IOCTL_DEF(DRM_IOCTL_GEM_CLOSE, drm_gem_close_ioctl, DRM_UNLOCKED),
+ DRM_IOCTL_DEF(DRM_IOCTL_GEM_FLINK, drm_gem_flink_ioctl, DRM_AUTH|DRM_UNLOCKED),
+ DRM_IOCTL_DEF(DRM_IOCTL_GEM_OPEN, drm_gem_open_ioctl, DRM_AUTH|DRM_UNLOCKED),
+
+ DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETRESOURCES, drm_mode_getresources, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
+ DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCRTC, drm_mode_getcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
+ DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETCRTC, drm_mode_setcrtc, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
+ DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR, drm_mode_cursor_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
+ DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETGAMMA, drm_mode_gamma_get_ioctl, DRM_MASTER|DRM_UNLOCKED),
+ DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETGAMMA, drm_mode_gamma_set_ioctl, DRM_MASTER|DRM_UNLOCKED),
+ DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETENCODER, drm_mode_getencoder, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
+ DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETCONNECTOR, drm_mode_getconnector, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
+ DRM_IOCTL_DEF(DRM_IOCTL_MODE_ATTACHMODE, drm_mode_attachmode_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
+ DRM_IOCTL_DEF(DRM_IOCTL_MODE_DETACHMODE, drm_mode_detachmode_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
+ DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPERTY, drm_mode_getproperty_ioctl, DRM_MASTER | DRM_CONTROL_ALLOW|DRM_UNLOCKED),
+ DRM_IOCTL_DEF(DRM_IOCTL_MODE_SETPROPERTY, drm_mode_connector_property_set_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
+ DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETPROPBLOB, drm_mode_getblob_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
+ DRM_IOCTL_DEF(DRM_IOCTL_MODE_GETFB, drm_mode_getfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
+ DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB, drm_mode_addfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
+ DRM_IOCTL_DEF(DRM_IOCTL_MODE_RMFB, drm_mode_rmfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
+ DRM_IOCTL_DEF(DRM_IOCTL_MODE_PAGE_FLIP, drm_mode_page_flip_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
+ DRM_IOCTL_DEF(DRM_IOCTL_MODE_DIRTYFB, drm_mode_dirtyfb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED)
};
#define DRM_CORE_IOCTL_COUNT ARRAY_SIZE( drm_ioctls )
@@ -176,10 +180,6 @@ int drm_lastclose(struct drm_device * dev)
mutex_lock(&dev->struct_mutex);
- /* Free drawable information memory */
- drm_drawable_free_all(dev);
- del_timer(&dev->timer);
-
/* Clear AGP information */
if (drm_core_has_AGP(dev) && dev->agp &&
!drm_core_check_feature(dev, DRIVER_MODESET)) {
@@ -242,47 +242,20 @@ int drm_lastclose(struct drm_device * dev)
*
* Initializes an array of drm_device structures, and attempts to
* initialize all available devices, using consecutive minors, registering the
- * stubs and initializing the AGP device.
+ * stubs and initializing the device.
*
* Expands the \c DRIVER_PREINIT and \c DRIVER_POST_INIT macros before and
* after the initialization for driver customization.
*/
int drm_init(struct drm_driver *driver)
{
- struct pci_dev *pdev = NULL;
- const struct pci_device_id *pid;
- int i;
-
DRM_DEBUG("\n");
-
INIT_LIST_HEAD(&driver->device_list);
- if (driver->driver_features & DRIVER_MODESET)
- return pci_register_driver(&driver->pci_driver);
-
- /* If not using KMS, fall back to stealth mode manual scanning. */
- for (i = 0; driver->pci_driver.id_table[i].vendor != 0; i++) {
- pid = &driver->pci_driver.id_table[i];
-
- /* Loop around setting up a DRM device for each PCI device
- * matching our ID and device class. If we had the internal
- * function that pci_get_subsys and pci_get_class used, we'd
- * be able to just pass pid in instead of doing a two-stage
- * thing.
- */
- pdev = NULL;
- while ((pdev =
- pci_get_subsys(pid->vendor, pid->device, pid->subvendor,
- pid->subdevice, pdev)) != NULL) {
- if ((pdev->class & pid->class_mask) != pid->class)
- continue;
-
- /* stealth mode requires a manual probe */
- pci_dev_get(pdev);
- drm_get_dev(pdev, pid, driver);
- }
- }
- return 0;
+ if (driver->driver_features & DRIVER_USE_PLATFORM_DEVICE)
+ return drm_platform_init(driver);
+ else
+ return drm_pci_init(driver);
}
EXPORT_SYMBOL(drm_init);
@@ -307,13 +280,15 @@ EXPORT_SYMBOL(drm_exit);
/** File operations structure */
static const struct file_operations drm_stub_fops = {
.owner = THIS_MODULE,
- .open = drm_stub_open
+ .open = drm_stub_open,
+ .llseek = noop_llseek,
};
static int __init drm_core_init(void)
{
int ret = -ENOMEM;
+ drm_global_init();
idr_init(&drm_minors_idr);
if (register_chrdev(DRM_MAJOR, "drm", &drm_stub_fops))
@@ -361,6 +336,7 @@ static void __exit drm_core_exit(void)
unregister_chrdev(DRM_MAJOR, "drm");
+ idr_remove_all(&drm_minors_idr);
idr_destroy(&drm_minors_idr);
}
@@ -445,6 +421,7 @@ long drm_ioctl(struct file *filp,
int retcode = -EINVAL;
char stack_kdata[128];
char *kdata = NULL;
+ unsigned int usize, asize;
dev = file_priv->minor->dev;
atomic_inc(&dev->ioctl_count);
@@ -460,11 +437,18 @@ long drm_ioctl(struct file *filp,
((nr < DRM_COMMAND_BASE) || (nr >= DRM_COMMAND_END)))
goto err_i1;
if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END) &&
- (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls))
+ (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls)) {
+ u32 drv_size;
ioctl = &dev->driver->ioctls[nr - DRM_COMMAND_BASE];
+ drv_size = _IOC_SIZE(ioctl->cmd_drv);
+ usize = asize = _IOC_SIZE(cmd);
+ if (drv_size > asize)
+ asize = drv_size;
+ }
else if ((nr >= DRM_COMMAND_END) || (nr < DRM_COMMAND_BASE)) {
ioctl = &drm_ioctls[nr];
cmd = ioctl->cmd;
+ usize = asize = _IOC_SIZE(cmd);
} else
goto err_i1;
@@ -484,10 +468,10 @@ long drm_ioctl(struct file *filp,
retcode = -EACCES;
} else {
if (cmd & (IOC_IN | IOC_OUT)) {
- if (_IOC_SIZE(cmd) <= sizeof(stack_kdata)) {
+ if (asize <= sizeof(stack_kdata)) {
kdata = stack_kdata;
} else {
- kdata = kmalloc(_IOC_SIZE(cmd), GFP_KERNEL);
+ kdata = kmalloc(asize, GFP_KERNEL);
if (!kdata) {
retcode = -ENOMEM;
goto err_i1;
@@ -497,22 +481,24 @@ long drm_ioctl(struct file *filp,
if (cmd & IOC_IN) {
if (copy_from_user(kdata, (void __user *)arg,
- _IOC_SIZE(cmd)) != 0) {
+ usize) != 0) {
retcode = -EFAULT;
goto err_i1;
}
- }
+ } else
+ memset(kdata, 0, usize);
+
if (ioctl->flags & DRM_UNLOCKED)
retcode = func(dev, kdata, file_priv);
else {
- lock_kernel();
+ mutex_lock(&drm_global_mutex);
retcode = func(dev, kdata, file_priv);
- unlock_kernel();
+ mutex_unlock(&drm_global_mutex);
}
if (cmd & IOC_OUT) {
if (copy_to_user((void __user *)arg, kdata,
- _IOC_SIZE(cmd)) != 0)
+ usize) != 0)
retcode = -EFAULT;
}
}
generated by cgit v1.2.3 (git 2.39.1) at 2025-11-22 19:48:45 +0000