patch-2.4.8 linux/drivers/char/drm/gamma_drv.c

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diff -u --recursive --new-file v2.4.7/linux/drivers/char/drm/gamma_drv.c linux/drivers/char/drm/gamma_drv.c
@@ -26,546 +26,69 @@
  *
  * Authors:
  *    Rickard E. (Rik) Faith <faith@valinux.com>
- *
+ *    Gareth Hughes <gareth@valinux.com>
  */
 
 #include <linux/config.h>
+#include "gamma.h"
 #include "drmP.h"
 #include "gamma_drv.h"
 
-#ifndef PCI_DEVICE_ID_3DLABS_GAMMA
-#define PCI_DEVICE_ID_3DLABS_GAMMA 0x0008
-#endif
-#ifndef PCI_DEVICE_ID_3DLABS_MX
-#define PCI_DEVICE_ID_3DLABS_MX 0x0006
-#endif
+#define DRIVER_AUTHOR		"VA Linux Systems Inc."
 
-#define GAMMA_NAME	 "gamma"
-#define GAMMA_DESC	 "3dlabs GMX 2000"
-#define GAMMA_DATE	 "20000910"
-#define GAMMA_MAJOR	 1
-#define GAMMA_MINOR	 0
-#define GAMMA_PATCHLEVEL 0
-
-static drm_device_t	      gamma_device;
-
-static struct file_operations gamma_fops = {
-#if LINUX_VERSION_CODE >= 0x020400
-				/* This started being used during 2.4.0-test */
-	owner:   THIS_MODULE,
-#endif
-	open:	 gamma_open,
-	flush:	 drm_flush,
-	release: gamma_release,
-	ioctl:	 gamma_ioctl,
-	mmap:	 drm_mmap,
-	read:	 drm_read,
-	fasync:	 drm_fasync,
-	poll:	 drm_poll,
-};
-
-static struct miscdevice      gamma_misc = {
-	minor: MISC_DYNAMIC_MINOR,
-	name:  GAMMA_NAME,
-	fops:  &gamma_fops,
-};
-
-static drm_ioctl_desc_t	      gamma_ioctls[] = {
-	[DRM_IOCTL_NR(DRM_IOCTL_VERSION)]    = { gamma_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)]    = { gamma_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)]   = { drm_addbufs,	  1, 1 },
-	[DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS)]  = { drm_markbufs,	  1, 1 },
-	[DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS)]  = { drm_infobufs,	  1, 0 },
-	[DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS)]   = { drm_mapbufs,	  1, 0 },
-	[DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS)]  = { drm_freebufs,	  1, 0 },
-
-	[DRM_IOCTL_NR(DRM_IOCTL_ADD_CTX)]    = { drm_addctx,	  1, 1 },
-	[DRM_IOCTL_NR(DRM_IOCTL_RM_CTX)]     = { drm_rmctx,	  1, 1 },
-	[DRM_IOCTL_NR(DRM_IOCTL_MOD_CTX)]    = { drm_modctx,	  1, 1 },
-	[DRM_IOCTL_NR(DRM_IOCTL_GET_CTX)]    = { drm_getctx,	  1, 0 },
-	[DRM_IOCTL_NR(DRM_IOCTL_SWITCH_CTX)] = { drm_switchctx,	  1, 1 },
-	[DRM_IOCTL_NR(DRM_IOCTL_NEW_CTX)]    = { drm_newctx,	  1, 1 },
-	[DRM_IOCTL_NR(DRM_IOCTL_RES_CTX)]    = { drm_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)]	     = { gamma_dma,	  1, 0 },
-	[DRM_IOCTL_NR(DRM_IOCTL_LOCK)]	     = { gamma_lock,	  1, 0 },
-	[DRM_IOCTL_NR(DRM_IOCTL_UNLOCK)]     = { gamma_unlock,	  1, 0 },
-	[DRM_IOCTL_NR(DRM_IOCTL_FINISH)]     = { drm_finish,	  1, 0 },
-};
-#define GAMMA_IOCTL_COUNT DRM_ARRAY_SIZE(gamma_ioctls)
-
-#ifdef MODULE
-static char		      *gamma = NULL;
-#endif
-static int 		      devices = 0;
+#define DRIVER_NAME		"gamma"
+#define DRIVER_DESC		"3DLabs gamma"
+#define DRIVER_DATE		"20010216"
+
+#define DRIVER_MAJOR		1
+#define DRIVER_MINOR		0
+#define DRIVER_PATCHLEVEL	0
+
+#define DRIVER_IOCTLS							  \
+	[DRM_IOCTL_NR(DRM_IOCTL_DMA)]	     = { gamma_dma,	  1, 0 }
+
+
+#define __HAVE_COUNTERS		5
+#define __HAVE_COUNTER6		_DRM_STAT_IRQ
+#define __HAVE_COUNTER7		_DRM_STAT_DMA
+#define __HAVE_COUNTER8		_DRM_STAT_PRIMARY
+#define __HAVE_COUNTER9		_DRM_STAT_SPECIAL
+#define __HAVE_COUNTER10	_DRM_STAT_MISSED
+
+
+#include "drm_auth.h"
+#include "drm_bufs.h"
+#include "drm_context.h"
+#include "drm_dma.h"
+#include "drm_drawable.h"
+#include "drm_drv.h"
 
-MODULE_AUTHOR("VA Linux Systems, Inc.");
-MODULE_DESCRIPTION("3dlabs GMX 2000");
-MODULE_PARM(gamma, "s");
-MODULE_PARM(devices, "i");
-MODULE_PARM_DESC(devices,
-		 "devices=x, where x is the number of MX chips on card\n");
 #ifndef MODULE
-/* gamma_options is called by the kernel to parse command-line options
+/* 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_options.
+ * routine, drm_parse_drm.
  */
 
-
-static int __init gamma_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 gamma_options( char *str )
 {
-	drm_parse_options(str);
+	DRM(parse_options)( str );
 	return 1;
 }
 
-__setup("gamma=", gamma_options);
-#endif
-
-static int gamma_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);
-#if DRM_DMA_HISTO
-	memset(&dev->histo, 0, sizeof(dev->histo));
-#endif
-	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 gamma_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->irq) gamma_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 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:
-				/* Do nothing here, because this is all
-                                   handled in the AGP/GART driver. */
-				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;
-}
-
-int gamma_found(void)
-{
-	return devices;
-}
-
-int gamma_find_devices(void)
-{
-	struct pci_dev *d = NULL, *one = NULL, *two = NULL;
-
-	d = pci_find_device(PCI_VENDOR_ID_3DLABS,PCI_DEVICE_ID_3DLABS_GAMMA,d);
-	if (!d) return 0;
-
-	one = pci_find_device(PCI_VENDOR_ID_3DLABS,PCI_DEVICE_ID_3DLABS_MX,d);
-	if (!one) return 0;
-
-	/* Make sure it's on the same card, if not - no MX's found */
-	if (PCI_SLOT(d->devfn) != PCI_SLOT(one->devfn)) return 0;
-
-	two = pci_find_device(PCI_VENDOR_ID_3DLABS,PCI_DEVICE_ID_3DLABS_MX,one);
-	if (!two) return 1;
-
-	/* Make sure it's on the same card, if not - only 1 MX found */
-	if (PCI_SLOT(d->devfn) != PCI_SLOT(two->devfn)) return 1;
-
-	/* Two MX's found - we don't currently support more than 2 */
-	return 2;
-}
-
-/* gamma_init is called via init_module at module load time, or via
- * linux/init/main.c (this is not currently supported). */
-
-static int __init gamma_init(void)
-{
-	int		      retcode;
-	drm_device_t	      *dev = &gamma_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(gamma);
-#endif
-	devices = gamma_find_devices();
-	if (devices == 0) return -1;
-
-	if ((retcode = misc_register(&gamma_misc))) {
-		DRM_ERROR("Cannot register \"%s\"\n", GAMMA_NAME);
-		return retcode;
-	}
-	dev->device = MKDEV(MISC_MAJOR, gamma_misc.minor);
-	dev->name   = GAMMA_NAME;
-
-	drm_mem_init();
-	drm_proc_init(dev);
-
-	DRM_INFO("Initialized %s %d.%d.%d %s on minor %d with %d MX devices\n",
-		 GAMMA_NAME,
-		 GAMMA_MAJOR,
-		 GAMMA_MINOR,
-		 GAMMA_PATCHLEVEL,
-		 GAMMA_DATE,
-		 gamma_misc.minor,
-		 devices);
-
-	return 0;
-}
-
-/* gamma_cleanup is called via cleanup_module at module unload time. */
-
-static void __exit gamma_cleanup(void)
-{
-	drm_device_t	      *dev = &gamma_device;
-
-	DRM_DEBUG("\n");
-
-	drm_proc_cleanup();
-	if (misc_deregister(&gamma_misc)) {
-		DRM_ERROR("Cannot unload module\n");
-	} else {
-		DRM_INFO("Module unloaded\n");
-	}
-	gamma_takedown(dev);
-}
-
-module_init(gamma_init);
-module_exit(gamma_cleanup);
-
-
-int gamma_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	   = GAMMA_MAJOR;
-	version.version_minor	   = GAMMA_MINOR;
-	version.version_patchlevel = GAMMA_PATCHLEVEL;
-
-	DRM_COPY(version.name, GAMMA_NAME);
-	DRM_COPY(version.date, GAMMA_DATE);
-	DRM_COPY(version.desc, GAMMA_DESC);
-
-	if (copy_to_user((drm_version_t *)arg,
-			 &version,
-			 sizeof(version)))
-		return -EFAULT;
-	return 0;
-}
-
-int gamma_open(struct inode *inode, struct file *filp)
-{
-	drm_device_t  *dev    = &gamma_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 */
+__setup( DRIVER_NAME "=", gamma_options );
 #endif
-		atomic_inc(&dev->total_open);
-		spin_lock(&dev->count_lock);
-		if (!dev->open_count++) {
-			spin_unlock(&dev->count_lock);
-			return gamma_setup(dev);
-		}
-		spin_unlock(&dev->count_lock);
-	}
-	return retcode;
-}
-
-int gamma_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("open_count = %d\n", dev->open_count);
-	if (!(retcode = drm_release(inode, filp))) {
-#if LINUX_VERSION_CODE < 0x020333
-		MOD_DEC_USE_COUNT; /* Needed before Linux 2.3.51 */
-#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 gamma_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 gamma_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;
-
-	DRM_DEBUG("pid = %d, cmd = 0x%02x, nr = 0x%02x, dev 0x%x, auth = %d\n",
-		  current->pid, cmd, nr, dev->device, priv->authenticated);
-
-	if (nr >= GAMMA_IOCTL_COUNT) {
-		retcode = -EINVAL;
-	} else {
-		ioctl	  = &gamma_ioctls[nr];
-		func	  = ioctl->func;
-
-		if (!func) {
-			DRM_DEBUG("no function\n");
-			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 gamma_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;
-	}
-
-	DRM_DEBUG("%d frees lock (%d holds)\n",
-		  lock.context,
-		  _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
-	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);
-	gamma_dma_schedule(dev, 1);
-	if (!dev->context_flag) {
-		if (drm_lock_free(dev, &dev->lock.hw_lock->lock,
-				  DRM_KERNEL_CONTEXT)) {
-			DRM_ERROR("\n");
-		}
-	}
-#if DRM_DMA_HISTOGRAM
-	atomic_inc(&dev->histo.lhld[drm_histogram_slot(get_cycles()
-						       - dev->lck_start)]);
-#endif
-
-	unblock_all_signals();
-	return 0;
-}
+#include "drm_fops.h"
+#include "drm_init.h"
+#include "drm_ioctl.h"
+#include "drm_lists.h"
+#include "drm_lock.h"
+#include "drm_memory.h"
+#include "drm_proc.h"
+#include "drm_vm.h"
+#include "drm_stub.h"
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