patch-2.4.8 linux/drivers/char/drm/mga_drv.c
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- Lines: 714
- Date:
Wed Aug 8 09:42:15 2001
- Orig file:
v2.4.7/linux/drivers/char/drm/mga_drv.c
- Orig date:
Thu Jan 4 14:06:18 2001
diff -u --recursive --new-file v2.4.7/linux/drivers/char/drm/mga_drv.c linux/drivers/char/drm/mga_drv.c
@@ -1,4 +1,4 @@
-/* mga_drv.c -- Matrox g200/g400 driver -*- linux-c -*-
+/* mga_drv.c -- Matrox G200/G400 driver -*- linux-c -*-
* Created: Mon Dec 13 01:56:22 1999 by jhartmann@precisioninsight.com
*
* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
@@ -19,647 +19,83 @@
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- *
- * Authors: Rickard E. (Rik) Faith <faith@valinux.com>
- * Jeff Hartmann <jhartmann@valinux.com>
- *
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
*
+ * Authors:
+ * Rickard E. (Rik) Faith <faith@valinux.com>
+ * Gareth Hughes <gareth@valinux.com>
*/
#include <linux/config.h>
+#include "mga.h"
#include "drmP.h"
#include "mga_drv.h"
-#define MGA_NAME "mga"
-#define MGA_DESC "Matrox G200/G400"
-#define MGA_DATE "20000928"
-#define MGA_MAJOR 2
-#define MGA_MINOR 0
-#define MGA_PATCHLEVEL 1
-
-static drm_device_t mga_device;
-drm_ctx_t mga_res_ctx;
-
-static struct file_operations mga_fops = {
-#if LINUX_VERSION_CODE >= 0x020400
- /* This started being used during 2.4.0-test */
- owner: THIS_MODULE,
-#endif
- open: mga_open,
- flush: drm_flush,
- release: mga_release,
- ioctl: mga_ioctl,
- mmap: drm_mmap,
- read: drm_read,
- fasync: drm_fasync,
- poll: drm_poll,
-};
-
-static struct miscdevice mga_misc = {
- minor: MISC_DYNAMIC_MINOR,
- name: MGA_NAME,
- fops: &mga_fops,
-};
-
-static drm_ioctl_desc_t mga_ioctls[] = {
- [DRM_IOCTL_NR(DRM_IOCTL_VERSION)] = { mga_version, 0, 0 },
- [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE)] = { drm_getunique, 0, 0 },
- [DRM_IOCTL_NR(DRM_IOCTL_GET_MAGIC)] = { drm_getmagic, 0, 0 },
- [DRM_IOCTL_NR(DRM_IOCTL_IRQ_BUSID)] = { drm_irq_busid, 0, 1 },
-
- [DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE)] = { drm_setunique, 1, 1 },
- [DRM_IOCTL_NR(DRM_IOCTL_BLOCK)] = { drm_block, 1, 1 },
- [DRM_IOCTL_NR(DRM_IOCTL_UNBLOCK)] = { drm_unblock, 1, 1 },
- [DRM_IOCTL_NR(DRM_IOCTL_CONTROL)] = { mga_control, 1, 1 },
- [DRM_IOCTL_NR(DRM_IOCTL_AUTH_MAGIC)] = { drm_authmagic, 1, 1 },
- [DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP)] = { drm_addmap, 1, 1 },
- [DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS)] = { mga_addbufs, 1, 1 },
- [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS)] = { mga_markbufs, 1, 1 },
- [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS)] = { mga_infobufs, 1, 0 },
- [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS)] = { mga_mapbufs, 1, 0 },
- [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS)] = { mga_freebufs, 1, 0 },
-
- [DRM_IOCTL_NR(DRM_IOCTL_ADD_CTX)] = { mga_addctx, 1, 1 },
- [DRM_IOCTL_NR(DRM_IOCTL_RM_CTX)] = { mga_rmctx, 1, 1 },
- [DRM_IOCTL_NR(DRM_IOCTL_MOD_CTX)] = { mga_modctx, 1, 1 },
- [DRM_IOCTL_NR(DRM_IOCTL_GET_CTX)] = { mga_getctx, 1, 0 },
- [DRM_IOCTL_NR(DRM_IOCTL_SWITCH_CTX)] = { mga_switchctx, 1, 1 },
- [DRM_IOCTL_NR(DRM_IOCTL_NEW_CTX)] = { mga_newctx, 1, 1 },
- [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX)] = { mga_resctx, 1, 0 },
- [DRM_IOCTL_NR(DRM_IOCTL_ADD_DRAW)] = { drm_adddraw, 1, 1 },
- [DRM_IOCTL_NR(DRM_IOCTL_RM_DRAW)] = { drm_rmdraw, 1, 1 },
-
- [DRM_IOCTL_NR(DRM_IOCTL_DMA)] = { mga_dma, 1, 0 },
-
- [DRM_IOCTL_NR(DRM_IOCTL_LOCK)] = { mga_lock, 1, 0 },
- [DRM_IOCTL_NR(DRM_IOCTL_UNLOCK)] = { mga_unlock, 1, 0 },
- [DRM_IOCTL_NR(DRM_IOCTL_FINISH)] = { drm_finish, 1, 0 },
-
- [DRM_IOCTL_NR(DRM_IOCTL_AGP_ACQUIRE)] = { drm_agp_acquire, 1, 1 },
- [DRM_IOCTL_NR(DRM_IOCTL_AGP_RELEASE)] = { drm_agp_release, 1, 1 },
- [DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE)] = { drm_agp_enable, 1, 1 },
- [DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO)] = { drm_agp_info, 1, 0 },
- [DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC)] = { drm_agp_alloc, 1, 1 },
- [DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE)] = { drm_agp_free, 1, 1 },
- [DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND)] = { drm_agp_bind, 1, 1 },
- [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND)] = { drm_agp_unbind, 1, 1 },
- [DRM_IOCTL_NR(DRM_IOCTL_MGA_INIT)] = { mga_dma_init, 1, 1 },
- [DRM_IOCTL_NR(DRM_IOCTL_MGA_SWAP)] = { mga_swap_bufs, 1, 0 },
- [DRM_IOCTL_NR(DRM_IOCTL_MGA_CLEAR)] = { mga_clear_bufs, 1, 0 },
- [DRM_IOCTL_NR(DRM_IOCTL_MGA_ILOAD)] = { mga_iload, 1, 0 },
- [DRM_IOCTL_NR(DRM_IOCTL_MGA_VERTEX)] = { mga_vertex, 1, 0 },
- [DRM_IOCTL_NR(DRM_IOCTL_MGA_FLUSH)] = { mga_flush_ioctl, 1, 0 },
- [DRM_IOCTL_NR(DRM_IOCTL_MGA_INDICES)] = { mga_indices, 1, 0 },
-};
-
-#define MGA_IOCTL_COUNT DRM_ARRAY_SIZE(mga_ioctls)
+#define DRIVER_AUTHOR "Gareth Hughes, VA Linux Systems Inc."
-#ifdef MODULE
-static char *mga = NULL;
-#endif
-
-MODULE_AUTHOR("VA Linux Systems, Inc.");
-MODULE_DESCRIPTION("Matrox G200/G400");
-MODULE_PARM(mga, "s");
+#define DRIVER_NAME "mga"
+#define DRIVER_DESC "Matrox G200/G400"
+#define DRIVER_DATE "20010321"
+
+#define DRIVER_MAJOR 3
+#define DRIVER_MINOR 0
+#define DRIVER_PATCHLEVEL 2
+
+#define DRIVER_IOCTLS \
+ [DRM_IOCTL_NR(DRM_IOCTL_DMA)] = { mga_dma_buffers, 1, 0 }, \
+ [DRM_IOCTL_NR(DRM_IOCTL_MGA_INIT)] = { mga_dma_init, 1, 1 }, \
+ [DRM_IOCTL_NR(DRM_IOCTL_MGA_FLUSH)] = { mga_dma_flush, 1, 0 }, \
+ [DRM_IOCTL_NR(DRM_IOCTL_MGA_RESET)] = { mga_dma_reset, 1, 0 }, \
+ [DRM_IOCTL_NR(DRM_IOCTL_MGA_SWAP)] = { mga_dma_swap, 1, 0 }, \
+ [DRM_IOCTL_NR(DRM_IOCTL_MGA_CLEAR)] = { mga_dma_clear, 1, 0 }, \
+ [DRM_IOCTL_NR(DRM_IOCTL_MGA_VERTEX)] = { mga_dma_vertex, 1, 0 }, \
+ [DRM_IOCTL_NR(DRM_IOCTL_MGA_INDICES)] = { mga_dma_indices, 1, 0 }, \
+ [DRM_IOCTL_NR(DRM_IOCTL_MGA_ILOAD)] = { mga_dma_iload, 1, 0 }, \
+ [DRM_IOCTL_NR(DRM_IOCTL_MGA_BLIT)] = { mga_dma_blit, 1, 0 },
+
+
+#define __HAVE_COUNTERS 3
+#define __HAVE_COUNTER6 _DRM_STAT_IRQ
+#define __HAVE_COUNTER7 _DRM_STAT_PRIMARY
+#define __HAVE_COUNTER8 _DRM_STAT_SECONDARY
+
+
+#include "drm_agpsupport.h"
+#include "drm_auth.h"
+#include "drm_bufs.h"
+#include "drm_context.h"
+#include "drm_dma.h"
+#include "drm_drawable.h"
+#include "drm_drv.h"
#ifndef MODULE
-/* mga_options is called by the kernel to parse command-line options passed
- * via the boot-loader (e.g., LILO). It calls the insmod option routine,
- * drm_parse_drm.
+/* DRM(options) is called by the kernel to parse command-line options
+ * passed via the boot-loader (e.g., LILO). It calls the insmod option
+ * routine, drm_parse_drm.
*/
-static int __init mga_options(char *str)
+/* JH- We have to hand expand the string ourselves because of the cpp. If
+ * anyone can think of a way that we can fit into the __setup macro without
+ * changing it, then please send the solution my way.
+ */
+static int __init mga_options( char *str )
{
- drm_parse_options(str);
+ DRM(parse_options)( str );
return 1;
}
-__setup("mga=", mga_options);
-#endif
-
-static int mga_setup(drm_device_t *dev)
-{
- int i;
-
- atomic_set(&dev->ioctl_count, 0);
- atomic_set(&dev->vma_count, 0);
- dev->buf_use = 0;
- atomic_set(&dev->buf_alloc, 0);
-
- drm_dma_setup(dev);
-
- atomic_set(&dev->total_open, 0);
- atomic_set(&dev->total_close, 0);
- atomic_set(&dev->total_ioctl, 0);
- atomic_set(&dev->total_irq, 0);
- atomic_set(&dev->total_ctx, 0);
- atomic_set(&dev->total_locks, 0);
- atomic_set(&dev->total_unlocks, 0);
- atomic_set(&dev->total_contends, 0);
- atomic_set(&dev->total_sleeps, 0);
-
- for (i = 0; i < DRM_HASH_SIZE; i++) {
- dev->magiclist[i].head = NULL;
- dev->magiclist[i].tail = NULL;
- }
- dev->maplist = NULL;
- dev->map_count = 0;
- dev->vmalist = NULL;
- dev->lock.hw_lock = NULL;
- init_waitqueue_head(&dev->lock.lock_queue);
- dev->queue_count = 0;
- dev->queue_reserved = 0;
- dev->queue_slots = 0;
- dev->queuelist = NULL;
- dev->irq = 0;
- dev->context_flag = 0;
- dev->interrupt_flag = 0;
- dev->dma_flag = 0;
- dev->last_context = 0;
- dev->last_switch = 0;
- dev->last_checked = 0;
- init_timer(&dev->timer);
- init_waitqueue_head(&dev->context_wait);
-
- dev->ctx_start = 0;
- dev->lck_start = 0;
-
- dev->buf_rp = dev->buf;
- dev->buf_wp = dev->buf;
- dev->buf_end = dev->buf + DRM_BSZ;
- dev->buf_async = NULL;
- init_waitqueue_head(&dev->buf_readers);
- init_waitqueue_head(&dev->buf_writers);
-
- DRM_DEBUG("\n");
-
- /* The kernel's context could be created here, but is now created
- in drm_dma_enqueue. This is more resource-efficient for
- hardware that does not do DMA, but may mean that
- drm_select_queue fails between the time the interrupt is
- initialized and the time the queues are initialized. */
-
- return 0;
-}
-
-
-static int mga_takedown(drm_device_t *dev)
-{
- int i;
- drm_magic_entry_t *pt, *next;
- drm_map_t *map;
- drm_vma_entry_t *vma, *vma_next;
-
- DRM_DEBUG("\n");
-
- if (dev->dev_private) mga_dma_cleanup(dev);
- if (dev->irq) mga_irq_uninstall(dev);
-
- down(&dev->struct_sem);
- del_timer(&dev->timer);
-
- if (dev->devname) {
- drm_free(dev->devname, strlen(dev->devname)+1, DRM_MEM_DRIVER);
- dev->devname = NULL;
- }
-
- if (dev->unique) {
- drm_free(dev->unique, strlen(dev->unique)+1, DRM_MEM_DRIVER);
- dev->unique = NULL;
- dev->unique_len = 0;
- }
- /* Clear pid list */
- for (i = 0; i < DRM_HASH_SIZE; i++) {
- for (pt = dev->magiclist[i].head; pt; pt = next) {
- next = pt->next;
- drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC);
- }
- dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
- }
- /* Clear AGP information */
- if (dev->agp) {
- drm_agp_mem_t *entry;
- drm_agp_mem_t *nexte;
-
- /* Remove AGP resources, but leave dev->agp
- intact until cleanup is called. */
- for (entry = dev->agp->memory; entry; entry = nexte) {
- nexte = entry->next;
- if (entry->bound) drm_unbind_agp(entry->memory);
- drm_free_agp(entry->memory, entry->pages);
- drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
- }
- dev->agp->memory = NULL;
-
- if (dev->agp->acquired) _drm_agp_release();
-
- dev->agp->acquired = 0;
- dev->agp->enabled = 0;
- }
- /* Clear vma list (only built for debugging) */
- if (dev->vmalist) {
- for (vma = dev->vmalist; vma; vma = vma_next) {
- vma_next = vma->next;
- drm_free(vma, sizeof(*vma), DRM_MEM_VMAS);
- }
- dev->vmalist = NULL;
- }
-
- /* Clear map area and mtrr information */
- if (dev->maplist) {
- for (i = 0; i < dev->map_count; i++) {
- map = dev->maplist[i];
- switch (map->type) {
- case _DRM_REGISTERS:
- case _DRM_FRAME_BUFFER:
-#ifdef CONFIG_MTRR
- if (map->mtrr >= 0) {
- int retcode;
- retcode = mtrr_del(map->mtrr,
- map->offset,
- map->size);
- DRM_DEBUG("mtrr_del = %d\n", retcode);
- }
-#endif
- drm_ioremapfree(map->handle, map->size);
- break;
- case _DRM_SHM:
- drm_free_pages((unsigned long)map->handle,
- drm_order(map->size)
- - PAGE_SHIFT,
- DRM_MEM_SAREA);
- break;
- case _DRM_AGP:
- break;
- }
- drm_free(map, sizeof(*map), DRM_MEM_MAPS);
- }
- drm_free(dev->maplist,
- dev->map_count * sizeof(*dev->maplist),
- DRM_MEM_MAPS);
- dev->maplist = NULL;
- dev->map_count = 0;
- }
-
- if (dev->queuelist) {
- for (i = 0; i < dev->queue_count; i++) {
- drm_waitlist_destroy(&dev->queuelist[i]->waitlist);
- if (dev->queuelist[i]) {
- drm_free(dev->queuelist[i],
- sizeof(*dev->queuelist[0]),
- DRM_MEM_QUEUES);
- dev->queuelist[i] = NULL;
- }
- }
- drm_free(dev->queuelist,
- dev->queue_slots * sizeof(*dev->queuelist),
- DRM_MEM_QUEUES);
- dev->queuelist = NULL;
- }
-
- drm_dma_takedown(dev);
-
- dev->queue_count = 0;
- if (dev->lock.hw_lock) {
- dev->lock.hw_lock = NULL; /* SHM removed */
- dev->lock.pid = 0;
- wake_up_interruptible(&dev->lock.lock_queue);
- }
- up(&dev->struct_sem);
-
- return 0;
-}
-
-/* mga_init is called via init_module at module load time, or via
- * linux/init/main.c (this is not currently supported). */
-
-static int __init mga_init(void)
-{
- int retcode;
- drm_device_t *dev = &mga_device;
-
- DRM_DEBUG("\n");
-
- memset((void *)dev, 0, sizeof(*dev));
- dev->count_lock = SPIN_LOCK_UNLOCKED;
- sema_init(&dev->struct_sem, 1);
-
-#ifdef MODULE
- drm_parse_options(mga);
-#endif
- if ((retcode = misc_register(&mga_misc))) {
- DRM_ERROR("Cannot register \"%s\"\n", MGA_NAME);
- return retcode;
- }
- dev->device = MKDEV(MISC_MAJOR, mga_misc.minor);
- dev->name = MGA_NAME;
-
- drm_mem_init();
- drm_proc_init(dev);
- dev->agp = drm_agp_init();
- if(dev->agp == NULL) {
- DRM_INFO("The mga drm module requires the agpgart module"
- " to function correctly\nPlease load the agpgart"
- " module before you load the mga module\n");
- drm_proc_cleanup();
- misc_deregister(&mga_misc);
- mga_takedown(dev);
- return -ENOMEM;
- }
-#ifdef CONFIG_MTRR
- dev->agp->agp_mtrr = mtrr_add(dev->agp->agp_info.aper_base,
- dev->agp->agp_info.aper_size * 1024 * 1024,
- MTRR_TYPE_WRCOMB,
- 1);
-#endif
- if((retcode = drm_ctxbitmap_init(dev))) {
- DRM_ERROR("Cannot allocate memory for context bitmap.\n");
- drm_proc_cleanup();
- misc_deregister(&mga_misc);
- mga_takedown(dev);
- return retcode;
- }
-
- DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
- MGA_NAME,
- MGA_MAJOR,
- MGA_MINOR,
- MGA_PATCHLEVEL,
- MGA_DATE,
- mga_misc.minor);
-
- return 0;
-}
-
-/* mga_cleanup is called via cleanup_module at module unload time. */
-
-static void __exit mga_cleanup(void)
-{
- drm_device_t *dev = &mga_device;
-
- DRM_DEBUG("\n");
-
- drm_proc_cleanup();
- if (misc_deregister(&mga_misc)) {
- DRM_ERROR("Cannot unload module\n");
- } else {
- DRM_INFO("Module unloaded\n");
- }
- drm_ctxbitmap_cleanup(dev);
-#ifdef CONFIG_MTRR
- if(dev->agp && dev->agp->agp_mtrr) {
- int retval;
- retval = mtrr_del(dev->agp->agp_mtrr,
- dev->agp->agp_info.aper_base,
- dev->agp->agp_info.aper_size * 1024*1024);
- DRM_DEBUG("mtrr_del = %d\n", retval);
- }
-#endif
-
- mga_takedown(dev);
- if (dev->agp) {
- drm_agp_uninit();
- drm_free(dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS);
- dev->agp = NULL;
- }
-}
-
-module_init(mga_init);
-module_exit(mga_cleanup);
-
-
-int mga_version(struct inode *inode, struct file *filp, unsigned int cmd,
- unsigned long arg)
-{
- drm_version_t version;
- int len;
-
- if (copy_from_user(&version,
- (drm_version_t *)arg,
- sizeof(version)))
- return -EFAULT;
-
-#define DRM_COPY(name,value) \
- len = strlen(value); \
- if (len > name##_len) len = name##_len; \
- name##_len = strlen(value); \
- if (len && name) { \
- if (copy_to_user(name, value, len)) \
- return -EFAULT; \
- }
-
- version.version_major = MGA_MAJOR;
- version.version_minor = MGA_MINOR;
- version.version_patchlevel = MGA_PATCHLEVEL;
-
- DRM_COPY(version.name, MGA_NAME);
- DRM_COPY(version.date, MGA_DATE);
- DRM_COPY(version.desc, MGA_DESC);
-
- if (copy_to_user((drm_version_t *)arg,
- &version,
- sizeof(version)))
- return -EFAULT;
- return 0;
-}
-
-int mga_open(struct inode *inode, struct file *filp)
-{
- drm_device_t *dev = &mga_device;
- int retcode = 0;
-
- DRM_DEBUG("open_count = %d\n", dev->open_count);
- if (!(retcode = drm_open_helper(inode, filp, dev))) {
-#if LINUX_VERSION_CODE < 0x020333
- MOD_INC_USE_COUNT; /* Needed before Linux 2.3.51 */
-#endif
- atomic_inc(&dev->total_open);
- spin_lock(&dev->count_lock);
- if (!dev->open_count++) {
- spin_unlock(&dev->count_lock);
- return mga_setup(dev);
- }
- spin_unlock(&dev->count_lock);
- }
- return retcode;
-}
-
-int mga_release(struct inode *inode, struct file *filp)
-{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev;
- int retcode = 0;
-
- lock_kernel();
- dev = priv->dev;
- DRM_DEBUG("pid = %d, device = 0x%x, open_count = %d\n",
- current->pid, dev->device, dev->open_count);
-
- if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)
- && dev->lock.pid == current->pid) {
- mga_reclaim_buffers(dev, priv->pid);
- DRM_INFO("Process %d dead (ctx %d, d_s = 0x%02lx)\n",
- current->pid,
- _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock),
- dev->dev_private ?
- ((drm_mga_private_t *)dev->dev_private)
- ->dispatch_status
- : 0);
-
- if (dev->dev_private)
- ((drm_mga_private_t *)dev->dev_private)
- ->dispatch_status &= MGA_IN_DISPATCH;
-
- drm_lock_free(dev,
- &dev->lock.hw_lock->lock,
- _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
- } else if (dev->lock.hw_lock) {
- /* The lock is required to reclaim buffers */
- DECLARE_WAITQUEUE(entry, current);
- add_wait_queue(&dev->lock.lock_queue, &entry);
- for (;;) {
- current->state = TASK_INTERRUPTIBLE;
- if (!dev->lock.hw_lock) {
- /* Device has been unregistered */
- retcode = -EINTR;
- break;
- }
- if (drm_lock_take(&dev->lock.hw_lock->lock,
- DRM_KERNEL_CONTEXT)) {
- dev->lock.pid = priv->pid;
- dev->lock.lock_time = jiffies;
- atomic_inc(&dev->total_locks);
- break; /* Got lock */
- }
- /* Contention */
- atomic_inc(&dev->total_sleeps);
- schedule();
- if (signal_pending(current)) {
- retcode = -ERESTARTSYS;
- break;
- }
- }
- current->state = TASK_RUNNING;
- remove_wait_queue(&dev->lock.lock_queue, &entry);
- if(!retcode) {
- mga_reclaim_buffers(dev, priv->pid);
- if (dev->dev_private)
- ((drm_mga_private_t *)dev->dev_private)
- ->dispatch_status &= MGA_IN_DISPATCH;
- drm_lock_free(dev, &dev->lock.hw_lock->lock,
- DRM_KERNEL_CONTEXT);
- }
- }
- drm_fasync(-1, filp, 0);
-
- down(&dev->struct_sem);
- if (priv->remove_auth_on_close == 1) {
- drm_file_t *temp = dev->file_first;
- while(temp) {
- temp->authenticated = 0;
- temp = temp->next;
- }
- }
- if (priv->prev) priv->prev->next = priv->next;
- else dev->file_first = priv->next;
- if (priv->next) priv->next->prev = priv->prev;
- else dev->file_last = priv->prev;
- up(&dev->struct_sem);
-
- drm_free(priv, sizeof(*priv), DRM_MEM_FILES);
-#if LINUX_VERSION_CODE < 0x020333
- MOD_DEC_USE_COUNT; /* Needed before Linux 2.3.51 */
+__setup( DRIVER_NAME "=", mga_options );
#endif
- atomic_inc(&dev->total_close);
- spin_lock(&dev->count_lock);
- if (!--dev->open_count) {
- if (atomic_read(&dev->ioctl_count) || dev->blocked) {
- DRM_ERROR("Device busy: %d %d\n",
- atomic_read(&dev->ioctl_count),
- dev->blocked);
- spin_unlock(&dev->count_lock);
- unlock_kernel();
- return -EBUSY;
- }
- spin_unlock(&dev->count_lock);
- unlock_kernel();
- return mga_takedown(dev);
- }
- spin_unlock(&dev->count_lock);
- unlock_kernel();
- return retcode;
-}
-/* drm_ioctl is called whenever a process performs an ioctl on /dev/drm. */
-
-int mga_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
- unsigned long arg)
-{
- int nr = DRM_IOCTL_NR(cmd);
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->dev;
- int retcode = 0;
- drm_ioctl_desc_t *ioctl;
- drm_ioctl_t *func;
-
- atomic_inc(&dev->ioctl_count);
- atomic_inc(&dev->total_ioctl);
- ++priv->ioctl_count;
-
- if (nr >= MGA_IOCTL_COUNT) {
- retcode = -EINVAL;
- } else {
- ioctl = &mga_ioctls[nr];
- func = ioctl->func;
-
- if (!func) {
- DRM_DEBUG("no function: pid = %d, cmd = 0x%02x,"
- " nr = 0x%02x, dev 0x%x, auth = %d\n",
- current->pid, cmd, nr, dev->device,
- priv->authenticated);
- retcode = -EINVAL;
- } else if ((ioctl->root_only && !capable(CAP_SYS_ADMIN))
- || (ioctl->auth_needed && !priv->authenticated)) {
- retcode = -EACCES;
- } else {
- retcode = (func)(inode, filp, cmd, arg);
- }
- }
-
- atomic_dec(&dev->ioctl_count);
- return retcode;
-}
-
-int mga_unlock(struct inode *inode, struct file *filp, unsigned int cmd,
- unsigned long arg)
-{
- drm_file_t *priv = filp->private_data;
- drm_device_t *dev = priv->dev;
- drm_lock_t lock;
-
- if (copy_from_user(&lock, (drm_lock_t *)arg, sizeof(lock)))
- return -EFAULT;
-
- if (lock.context == DRM_KERNEL_CONTEXT) {
- DRM_ERROR("Process %d using kernel context %d\n",
- current->pid, lock.context);
- return -EINVAL;
- }
-
- atomic_inc(&dev->total_unlocks);
- if (_DRM_LOCK_IS_CONT(dev->lock.hw_lock->lock))
- atomic_inc(&dev->total_contends);
- drm_lock_transfer(dev, &dev->lock.hw_lock->lock, DRM_KERNEL_CONTEXT);
- mga_dma_schedule(dev, 1);
-
- if (drm_lock_free(dev, &dev->lock.hw_lock->lock,
- DRM_KERNEL_CONTEXT)) DRM_ERROR("\n");
-
- unblock_all_signals();
- return 0;
-}
+#include "drm_fops.h"
+#include "drm_init.h"
+#include "drm_ioctl.h"
+#include "drm_lock.h"
+#include "drm_memory.h"
+#include "drm_proc.h"
+#include "drm_vm.h"
+#include "drm_stub.h"
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)