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-rw-r--r--bsd-core/ati_pcigart.c8
-rw-r--r--bsd-core/drm_agpsupport.c10
-rw-r--r--bsd-core/drm_auth.c8
-rw-r--r--bsd-core/drm_bufs.c19
-rw-r--r--bsd-core/drm_context.c7
-rw-r--r--bsd-core/drm_dma.c11
-rw-r--r--bsd-core/drm_drawable.c8
-rw-r--r--bsd-core/drm_drv.c30
-rw-r--r--bsd-core/drm_fops.c8
-rw-r--r--bsd-core/drm_ioctl.c46
-rw-r--r--bsd-core/drm_irq.c8
-rw-r--r--bsd-core/drm_lock.c28
-rw-r--r--bsd-core/drm_memory.c11
-rw-r--r--bsd-core/drm_pci.c14
-rw-r--r--bsd-core/drm_scatter.c9
-rw-r--r--bsd-core/drm_sysctl.c5
-rw-r--r--bsd-core/drm_vm.c4
17 files changed, 152 insertions, 82 deletions
diff --git a/bsd-core/ati_pcigart.c b/bsd-core/ati_pcigart.c
index 682eace6..db19a75d 100644
--- a/bsd-core/ati_pcigart.c
+++ b/bsd-core/ati_pcigart.c
@@ -1,6 +1,3 @@
-/* ati_pcigart.h -- ATI PCI GART support -*- linux-c -*-
- * Created: Wed Dec 13 21:52:19 2000 by gareth@valinux.com
- */
/*-
* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
* All Rights Reserved.
@@ -29,6 +26,11 @@
*
*/
+/** @file ati_pcigart.c
+ * Implementation of ATI's PCIGART, which provides an aperture in card virtual
+ * address space with addresses remapped to system memory.
+ */
+
#include "drmP.h"
#define ATI_PCIGART_PAGE_SIZE 4096 /* PCI GART page size */
diff --git a/bsd-core/drm_agpsupport.c b/bsd-core/drm_agpsupport.c
index e8e162de..6f963b9c 100644
--- a/bsd-core/drm_agpsupport.c
+++ b/bsd-core/drm_agpsupport.c
@@ -1,6 +1,3 @@
-/* drm_agpsupport.h -- DRM support for AGP/GART backend -*- linux-c -*-
- * Created: Mon Dec 13 09:56:45 1999 by faith@precisioninsight.com
- */
/*-
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
@@ -31,6 +28,11 @@
*
*/
+/** @file drm_agpsupport.c
+ * Support code for tying the kernel AGP support to DRM drivers and
+ * the DRM's AGP ioctls.
+ */
+
#include "drmP.h"
#ifdef __FreeBSD__
@@ -182,7 +184,6 @@ int drm_agp_enable(drm_device_t *dev, drm_agp_mode_t mode)
dev->agp->mode = mode.mode;
agp_enable(dev->agp->agpdev, mode.mode);
- dev->agp->base = dev->agp->info.ai_aperture_base;
dev->agp->enabled = 1;
return 0;
}
@@ -403,6 +404,7 @@ drm_agp_head_t *drm_agp_init(void)
return NULL;
head->agpdev = agpdev;
agp_get_info(agpdev, &head->info);
+ head->base = head->info.ai_aperture_base;
head->memory = NULL;
DRM_INFO("AGP at 0x%08lx %dMB\n",
(long)head->info.ai_aperture_base,
diff --git a/bsd-core/drm_auth.c b/bsd-core/drm_auth.c
index 9b5f4f74..aa8238c4 100644
--- a/bsd-core/drm_auth.c
+++ b/bsd-core/drm_auth.c
@@ -1,6 +1,3 @@
-/* drm_auth.c -- IOCTLs for authentication -*- linux-c -*-
- * Created: Tue Feb 2 08:37:54 1999 by faith@valinux.com
- */
/*-
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
@@ -31,6 +28,11 @@
*
*/
+/** @file drm_auth.c
+ * Implementation of the get/authmagic ioctls implementing the authentication
+ * scheme between the master and clients.
+ */
+
#include "drmP.h"
static int drm_hash_magic(drm_magic_t magic)
diff --git a/bsd-core/drm_bufs.c b/bsd-core/drm_bufs.c
index a0a3fc73..9b58c593 100644
--- a/bsd-core/drm_bufs.c
+++ b/bsd-core/drm_bufs.c
@@ -1,6 +1,3 @@
-/* drm_bufs.h -- Generic buffer template -*- linux-c -*-
- * Created: Thu Nov 23 03:10:50 2000 by gareth@valinux.com
- */
/*-
* Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
@@ -31,6 +28,10 @@
*
*/
+/** @file drm_bufs.c
+ * Implementation of the ioctls for setup of DRM mappings and DMA buffers.
+ */
+
#include "dev/pci/pcireg.h"
#include "drmP.h"
@@ -190,7 +191,17 @@ int drm_addmap(drm_device_t * dev, unsigned long offset, unsigned long size,
break;
case _DRM_AGP:
/*valid = 0;*/
- map->offset += dev->agp->base;
+ /* In some cases (i810 driver), user space may have already
+ * added the AGP base itself, because dev->agp->base previously
+ * only got set during AGP enable. So, only add the base
+ * address if the map's offset isn't already within the
+ * aperture.
+ */
+ if (map->offset < dev->agp->base ||
+ map->offset > dev->agp->base +
+ dev->agp->info.ai_aperture_size - 1) {
+ map->offset += dev->agp->base;
+ }
map->mtrr = dev->agp->mtrr; /* for getmap */
/*for (entry = dev->agp->memory; entry; entry = entry->next) {
if ((map->offset >= entry->bound) &&
diff --git a/bsd-core/drm_context.c b/bsd-core/drm_context.c
index e34e8759..4155ee92 100644
--- a/bsd-core/drm_context.c
+++ b/bsd-core/drm_context.c
@@ -1,6 +1,3 @@
-/* drm_context.h -- IOCTLs for generic contexts -*- linux-c -*-
- * Created: Fri Nov 24 18:31:37 2000 by gareth@valinux.com
- */
/*-
* Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
@@ -31,6 +28,10 @@
*
*/
+/** @file drm_context.c
+ * Implementation of the context management ioctls.
+ */
+
#include "drmP.h"
/* ================================================================
diff --git a/bsd-core/drm_dma.c b/bsd-core/drm_dma.c
index 4896cf22..71ef845b 100644
--- a/bsd-core/drm_dma.c
+++ b/bsd-core/drm_dma.c
@@ -1,6 +1,3 @@
-/* drm_dma.c -- DMA IOCTL and function support -*- linux-c -*-
- * Created: Fri Mar 19 14:30:16 1999 by faith@valinux.com
- */
/*-
* Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
@@ -31,6 +28,14 @@
*
*/
+/** @file drm_dma.c
+ * Support code for DMA buffer management.
+ *
+ * The implementation used to be significantly more complicated, but the
+ * complexity has been moved into the drivers as different buffer management
+ * schemes evolved.
+ */
+
#include "drmP.h"
int drm_dma_setup(drm_device_t *dev)
diff --git a/bsd-core/drm_drawable.c b/bsd-core/drm_drawable.c
index 7e038ab9..fb318d47 100644
--- a/bsd-core/drm_drawable.c
+++ b/bsd-core/drm_drawable.c
@@ -1,6 +1,3 @@
-/* drm_drawable.h -- IOCTLs for drawables -*- linux-c -*-
- * Created: Tue Feb 2 08:37:54 1999 by faith@valinux.com
- */
/*-
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
@@ -31,6 +28,11 @@
*
*/
+/** @file drm_drawable.c
+ * This file implements ioctls to store information along with DRM drawables,
+ * such as the current set of cliprects for vblank-synced buffer swaps.
+ */
+
#include "drmP.h"
struct bsd_drm_drawable_info {
diff --git a/bsd-core/drm_drv.c b/bsd-core/drm_drv.c
index a978f50f..afd90351 100644
--- a/bsd-core/drm_drv.c
+++ b/bsd-core/drm_drv.c
@@ -1,6 +1,3 @@
-/* drm_drv.h -- Generic driver template -*- linux-c -*-
- * Created: Thu Nov 23 03:10:50 2000 by gareth@valinux.com
- */
/*-
* Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
@@ -31,6 +28,12 @@
*
*/
+/** @file drm_drv.c
+ * The catch-all file for DRM device support, including module setup/teardown,
+ * open/close, and ioctl dispatch.
+ */
+
+
#include <sys/limits.h>
#include "drmP.h"
#include "drm.h"
@@ -818,14 +821,7 @@ int drm_close(struct cdev *kdev, int flags, int fmt, DRM_STRUCTPROC *p)
int drm_ioctl(struct cdev *kdev, u_long cmd, caddr_t data, int flags,
DRM_STRUCTPROC *p)
{
-#ifdef __FreeBSD__
- drm_device_t *dev = kdev->si_drv1;
-#elif defined(__NetBSD__)
- drm_device_t *dev = device_lookup(&drm_cd, minor(kdev));
-#else
- drm_device_t *dev = device_lookup(&drm_cd,
- minor(kdev)))->dv_cfdata->cf_driver->cd_devs[minor(kdev)];
-#endif
+ drm_device_t *dev = drm_get_device_from_kdev(kdev);
int retcode = 0;
drm_ioctl_desc_t *ioctl;
int (*func)(drm_device_t *dev, void *data, struct drm_file *file_priv);
@@ -912,15 +908,13 @@ int drm_ioctl(struct cdev *kdev, u_long cmd, caddr_t data, int flags,
((ioctl->flags & DRM_MASTER) && !file_priv->master))
return EACCES;
- if (is_driver_ioctl)
- DRM_LOCK();
- retcode = func(dev, data, file_priv);
if (is_driver_ioctl) {
+ DRM_LOCK();
+ /* shared code returns -errno */
+ retcode = -func(dev, data, file_priv);
DRM_UNLOCK();
- /* Driver ioctls in shared code follow the linux convention of
- * returning -errno instead of errno.
- */
- retcode = -retcode;
+ } else {
+ retcode = func(dev, data, file_priv);
}
if (retcode != 0)
diff --git a/bsd-core/drm_fops.c b/bsd-core/drm_fops.c
index 2d037ea5..20bae8d7 100644
--- a/bsd-core/drm_fops.c
+++ b/bsd-core/drm_fops.c
@@ -1,6 +1,3 @@
-/* drm_fops.h -- File operations for DRM -*- linux-c -*-
- * Created: Mon Jan 4 08:58:31 1999 by faith@valinux.com
- */
/*-
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
@@ -32,6 +29,11 @@
*
*/
+/** @file drm_fops.c
+ * Support code for dealing with the file privates associated with each
+ * open of the DRM device.
+ */
+
#include "drmP.h"
drm_file_t *drm_find_file_by_proc(drm_device_t *dev, DRM_STRUCTPROC *p)
diff --git a/bsd-core/drm_ioctl.c b/bsd-core/drm_ioctl.c
index ebdb2140..ce78bb8f 100644
--- a/bsd-core/drm_ioctl.c
+++ b/bsd-core/drm_ioctl.c
@@ -1,6 +1,3 @@
-/* drm_ioctl.h -- IOCTL processing for DRM -*- linux-c -*-
- * Created: Fri Jan 8 09:01:26 1999 by faith@valinux.com
- */
/*-
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
@@ -31,6 +28,11 @@
*
*/
+/** @file drm_ioctl.c
+ * Varios minor DRM ioctls not applicable to other files, such as versioning
+ * information and reporting DRM information to userland.
+ */
+
#include "drmP.h"
/*
@@ -203,7 +205,7 @@ int drm_getstats(drm_device_t *dev, void *data, struct drm_file *file_priv)
drm_stats_t *stats = data;
int i;
- memset(&stats, 0, sizeof(stats));
+ memset(stats, 0, sizeof(drm_stats_t));
DRM_LOCK();
@@ -230,23 +232,27 @@ int drm_getstats(drm_device_t *dev, void *data, struct drm_file *file_priv)
int drm_setversion(drm_device_t *dev, void *data, struct drm_file *file_priv)
{
drm_set_version_t *sv = data;
- drm_set_version_t retv;
+ drm_set_version_t ver;
int if_version;
- retv.drm_di_major = DRM_IF_MAJOR;
- retv.drm_di_minor = DRM_IF_MINOR;
- retv.drm_dd_major = dev->driver.major;
- retv.drm_dd_minor = dev->driver.minor;
-
- if (sv->drm_di_major != -1) {
- if (sv->drm_di_major != DRM_IF_MAJOR ||
- sv->drm_di_minor < 0 || sv->drm_di_minor > DRM_IF_MINOR) {
+ /* Save the incoming data, and set the response before continuing
+ * any further.
+ */
+ ver = *sv;
+ sv->drm_di_major = DRM_IF_MAJOR;
+ sv->drm_di_minor = DRM_IF_MINOR;
+ sv->drm_dd_major = dev->driver.major;
+ sv->drm_dd_minor = dev->driver.minor;
+
+ if (ver.drm_di_major != -1) {
+ if (ver.drm_di_major != DRM_IF_MAJOR ||
+ ver.drm_di_minor < 0 || ver.drm_di_minor > DRM_IF_MINOR) {
return EINVAL;
}
- if_version = DRM_IF_VERSION(sv->drm_di_major,
- sv->drm_dd_minor);
+ if_version = DRM_IF_VERSION(ver.drm_di_major,
+ ver.drm_dd_minor);
dev->if_version = DRM_MAX(if_version, dev->if_version);
- if (sv->drm_di_minor >= 1) {
+ if (ver.drm_di_minor >= 1) {
/*
* Version 1.1 includes tying of DRM to specific device
*/
@@ -254,10 +260,10 @@ int drm_setversion(drm_device_t *dev, void *data, struct drm_file *file_priv)
}
}
- if (sv->drm_dd_major != -1) {
- if (sv->drm_dd_major != dev->driver.major ||
- sv->drm_dd_minor < 0 ||
- sv->drm_dd_minor > dev->driver.minor)
+ if (ver.drm_dd_major != -1) {
+ if (ver.drm_dd_major != dev->driver.major ||
+ ver.drm_dd_minor < 0 ||
+ ver.drm_dd_minor > dev->driver.minor)
{
return EINVAL;
}
diff --git a/bsd-core/drm_irq.c b/bsd-core/drm_irq.c
index 9c437e9d..0772445a 100644
--- a/bsd-core/drm_irq.c
+++ b/bsd-core/drm_irq.c
@@ -1,6 +1,3 @@
-/* drm_irq.c -- IRQ IOCTL and function support
- * Created: Fri Oct 18 2003 by anholt@FreeBSD.org
- */
/*-
* Copyright 2003 Eric Anholt
* All Rights Reserved.
@@ -28,6 +25,11 @@
*
*/
+/** @file drm_irq.c
+ * Support code for handling setup/teardown of interrupt handlers and
+ * handing interrupt handlers off to the drivers.
+ */
+
#include "drmP.h"
#include "drm.h"
diff --git a/bsd-core/drm_lock.c b/bsd-core/drm_lock.c
index 5acb13d3..fb86fc68 100644
--- a/bsd-core/drm_lock.c
+++ b/bsd-core/drm_lock.c
@@ -1,6 +1,3 @@
-/* lock.c -- IOCTLs for locking -*- linux-c -*-
- * Created: Tue Feb 2 08:37:54 1999 by faith@valinux.com
- */
/*-
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
@@ -31,6 +28,25 @@
*
*/
+/** @file drm_lock.c
+ * Implementation of the ioctls and other support code for dealing with the
+ * hardware lock.
+ *
+ * The DRM hardware lock is a shared structure between the kernel and userland.
+ *
+ * On uncontended access where the new context was the last context, the
+ * client may take the lock without dropping down into the kernel, using atomic
+ * compare-and-set.
+ *
+ * If the client finds during compare-and-set that it was not the last owner
+ * of the lock, it calls the DRM lock ioctl, which may sleep waiting for the
+ * lock, and may have side-effects of kernel-managed context switching.
+ *
+ * When the client releases the lock, if the lock is marked as being contended
+ * by another client, then the DRM unlock ioctl is called so that the
+ * contending client may be woken up.
+ */
+
#include "drmP.h"
int drm_lock_take(__volatile__ unsigned int *lock, unsigned int context)
@@ -157,6 +173,12 @@ int drm_unlock(drm_device_t *dev, void *data, struct drm_file *file_priv)
DRM_CURRENTPID, lock->context);
return EINVAL;
}
+ /* Check that the context unlock being requested actually matches
+ * who currently holds the lock.
+ */
+ if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock) ||
+ _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock) != lock->context)
+ return EINVAL;
atomic_inc(&dev->counts[_DRM_STAT_UNLOCKS]);
diff --git a/bsd-core/drm_memory.c b/bsd-core/drm_memory.c
index 6d467e98..1f1f7f4b 100644
--- a/bsd-core/drm_memory.c
+++ b/bsd-core/drm_memory.c
@@ -1,6 +1,3 @@
-/* drm_memory.h -- Memory management wrappers for DRM -*- linux-c -*-
- * Created: Thu Feb 4 14:00:34 1999 by faith@valinux.com
- */
/*-
*Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
@@ -31,6 +28,14 @@
*
*/
+/** @file drm_memory.c
+ * Wrappers for kernel memory allocation routines, and MTRR management support.
+ *
+ * This file previously implemented a memory consumption tracking system using
+ * the "area" argument for various different types of allocations, but that
+ * has been stripped out for now.
+ */
+
#include "drmP.h"
MALLOC_DEFINE(M_DRM, "drm", "DRM Data Structures");
diff --git a/bsd-core/drm_pci.c b/bsd-core/drm_pci.c
index a33f5f9c..6ec6b983 100644
--- a/bsd-core/drm_pci.c
+++ b/bsd-core/drm_pci.c
@@ -1,10 +1,3 @@
-/**
- * \file drm_pci.h
- * \brief PCI consistent, DMA-accessible memory functions.
- *
- * \author Eric Anholt <anholt@FreeBSD.org>
- */
-
/*-
* Copyright 2003 Eric Anholt.
* All Rights Reserved.
@@ -28,6 +21,13 @@
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
+/**
+ * \file drm_pci.h
+ * \brief PCI consistent, DMA-accessible memory allocation.
+ *
+ * \author Eric Anholt <anholt@FreeBSD.org>
+ */
+
#include "drmP.h"
/**********************************************************************/
diff --git a/bsd-core/drm_scatter.c b/bsd-core/drm_scatter.c
index 91c3c6c5..92e715e0 100644
--- a/bsd-core/drm_scatter.c
+++ b/bsd-core/drm_scatter.c
@@ -1,5 +1,3 @@
-/* drm_scatter.h -- IOCTLs to manage scatter/gather memory -*- linux-c -*-
- * Created: Mon Dec 18 23:20:54 2000 by gareth@valinux.com */
/*-
* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
* All Rights Reserved.
@@ -29,6 +27,13 @@
*
*/
+/** @file drm_scatter.c
+ * Allocation of memory for scatter-gather mappings by the graphics chip.
+ *
+ * The memory allocated here is then made into an aperture in the card
+ * by drm_ati_pcigart_init().
+ */
+
#include "drmP.h"
#define DEBUG_SCATTER 0
diff --git a/bsd-core/drm_sysctl.c b/bsd-core/drm_sysctl.c
index b2d0cc0c..3de5b8ae 100644
--- a/bsd-core/drm_sysctl.c
+++ b/bsd-core/drm_sysctl.c
@@ -21,6 +21,11 @@
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
+/** @file drm_sysctl.c
+ * Implementation of various sysctls for controlling DRM behavior and reporting
+ * debug information.
+ */
+
#include "drmP.h"
#include "drm.h"
diff --git a/bsd-core/drm_vm.c b/bsd-core/drm_vm.c
index af1dbaa8..fea31f52 100644
--- a/bsd-core/drm_vm.c
+++ b/bsd-core/drm_vm.c
@@ -21,6 +21,10 @@
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
+/** @file drm_vm.c
+ * Support code for mmaping of DRM maps.
+ */
+
#include "drmP.h"
#include "drm.h"
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-31 04:11:49 +0000