patch-2.4.0-test9 linux/drivers/char/drm/tdfx_drv.c

• Lines: 253
• Date: Sun Oct 1 20:00:00 2000
• Orig file: v2.4.0-test8/linux/drivers/char/drm/tdfx_drv.c
• Orig date: Tue Aug 29 21:09:10 2000

diff -u --recursive --new-file v2.4.0-test8/linux/drivers/char/drm/tdfx_drv.c linux/drivers/char/drm/tdfx_drv.c
@@ -1,4 +1,4 @@
-/* tdfx.c -- tdfx driver -*- linux-c -*-
+/* tdfx_drv.c -- tdfx driver -*- linux-c -*-
  * Created: Thu Oct  7 10:38:32 1999 by faith@precisioninsight.com
  *
  * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
@@ -11,11 +11,11 @@
  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  * and/or sell copies of the Software, and to permit persons to whom the
  * Software is furnished to do so, subject to the following conditions:
- * 
+ *
  * The above copyright notice and this permission notice (including the next
  * paragraph) shall be included in all copies or substantial portions of the
  * Software.
- * 
+ *
  * 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
@@ -23,7 +23,7 @@
  * 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>
  *    Daryll Strauss <daryll@valinux.com>
@@ -36,7 +36,7 @@
 
 #define TDFX_NAME	 "tdfx"
 #define TDFX_DESC	 "3dfx Banshee/Voodoo3+"
-#define TDFX_DATE	 "20000719"
+#define TDFX_DATE	 "20000928"
 #define TDFX_MAJOR	 1
 #define TDFX_MINOR	 0
 #define TDFX_PATCHLEVEL  0
@@ -76,7 +76,7 @@
 	[DRM_IOCTL_NR(DRM_IOCTL_UNBLOCK)]    = { drm_unblock,	  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_CTX)]    = { tdfx_addctx,	  1, 1 },
 	[DRM_IOCTL_NR(DRM_IOCTL_RM_CTX)]     = { tdfx_rmctx,	  1, 1 },
 	[DRM_IOCTL_NR(DRM_IOCTL_MOD_CTX)]    = { tdfx_modctx,	  1, 1 },
@@ -128,7 +128,7 @@
 static int tdfx_setup(drm_device_t *dev)
 {
 	int i;
-	
+
 	atomic_set(&dev->ioctl_count, 0);
 	atomic_set(&dev->vma_count, 0);
 	dev->buf_use	  = 0;
@@ -170,7 +170,7 @@
 
 	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;
@@ -179,15 +179,15 @@
 	init_waitqueue_head(&dev->buf_writers);
 
 	tdfx_res_ctx.handle=-1;
-			
+
 	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;
 }
 
@@ -203,12 +203,12 @@
 
 	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;
@@ -227,7 +227,7 @@
 	if (dev->agp) {
 		drm_agp_mem_t *temp;
 		drm_agp_mem_t *temp_next;
-	   
+
 		temp = dev->agp->memory;
 		while(temp != NULL) {
 			temp_next = temp->next;
@@ -246,7 +246,7 @@
 		}
 		dev->vmalist = NULL;
 	}
-	
+
 				/* Clear map area and mtrr information */
 	if (dev->maplist) {
 		for (i = 0; i < dev->map_count; i++) {
@@ -284,14 +284,14 @@
 		dev->maplist   = NULL;
 		dev->map_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;
 }
 
@@ -308,7 +308,7 @@
 	memset((void *)dev, 0, sizeof(*dev));
 	dev->count_lock	  = SPIN_LOCK_UNLOCKED;
 	sema_init(&dev->struct_sem, 1);
-	
+
 #ifdef MODULE
 	drm_parse_options(tdfx);
 #endif
@@ -340,7 +340,7 @@
 		 TDFX_PATCHLEVEL,
 		 TDFX_DATE,
 		 tdfx_misc.minor);
-	
+
 	return 0;
 }
 
@@ -351,7 +351,7 @@
 	drm_device_t	      *dev = &tdfx_device;
 
 	DRM_DEBUG("\n");
-	
+
 	drm_proc_cleanup();
 	if (misc_deregister(&tdfx_misc)) {
 		DRM_ERROR("Cannot unload module\n");
@@ -412,7 +412,7 @@
 {
 	drm_device_t  *dev    = &tdfx_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
@@ -480,7 +480,7 @@
 	atomic_inc(&dev->ioctl_count);
 	atomic_inc(&dev->total_ioctl);
 	++priv->ioctl_count;
-	
+
 	DRM_DEBUG("pid = %d, cmd = 0x%02x, nr = 0x%02x, dev 0x%x, auth = %d\n",
 		  current->pid, cmd, nr, dev->device, priv->authenticated);
 
@@ -500,7 +500,7 @@
 			retcode = (func)(inode, filp, cmd, arg);
 		}
 	}
-	
+
 	atomic_dec(&dev->ioctl_count);
 	return retcode;
 }
@@ -538,7 +538,7 @@
         if (lock.context < 0 || lock.context >= dev->queue_count)
                 return -EINVAL;
 #endif
-        
+
         if (!ret) {
 #if 0
                 if (_DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock)
@@ -550,7 +550,7 @@
                                 /* Can't take lock if we just had it and
                                    there is contention. */
                                 DRM_DEBUG("%d (pid %d) delayed j=%d dev=%d jiffies=%d\n",
-					lock.context, current->pid, j, 
+					lock.context, current->pid, j,
 					dev->lock.lock_time, jiffies);
                                 current->state = TASK_INTERRUPTIBLE;
 				current->policy |= SCHED_YIELD;
@@ -561,6 +561,7 @@
 #endif
                 add_wait_queue(&dev->lock.lock_queue, &entry);
                 for (;;) {
+                        current->state = TASK_INTERRUPTIBLE;
                         if (!dev->lock.hw_lock) {
                                 /* Device has been unregistered */
                                 ret = -EINTR;
@@ -573,10 +574,9 @@
                                 atomic_inc(&dev->total_locks);
                                 break;  /* Got lock */
                         }
-                        
+
                                 /* Contention */
                         atomic_inc(&dev->total_sleeps);
-                        current->state = TASK_INTERRUPTIBLE;
 #if 1
 			current->policy |= SCHED_YIELD;
 #endif
@@ -648,7 +648,7 @@
 #if DRM_DMA_HISTOGRAM
         atomic_inc(&dev->histo.lacq[drm_histogram_slot(get_cycles() - start)]);
 #endif
-        
+
         return ret;
 }
 
@@ -662,7 +662,7 @@
 
 	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);
@@ -690,7 +690,7 @@
 		current->priority = DEF_PRIORITY;
 	}
 #endif
-	
+
 	unblock_all_signals();
 	return 0;
 }