* OTHER DEALINGS IN THE SOFTWARE.
*/
-#ifndef __MUST_HAVE_AGP
-#define __MUST_HAVE_AGP 0
-#endif
-#ifndef __HAVE_CTX_BITMAP
-#define __HAVE_CTX_BITMAP 0
-#endif
-#ifndef __HAVE_IRQ
-#define __HAVE_IRQ 0
-#endif
-#ifndef __HAVE_DMA_QUEUE
-#define __HAVE_DMA_QUEUE 0
-#endif
-#ifndef __HAVE_MULTIPLE_DMA_QUEUES
-#define __HAVE_MULTIPLE_DMA_QUEUES 0
-#endif
-#ifndef __HAVE_DMA_SCHEDULE
-#define __HAVE_DMA_SCHEDULE 0
-#endif
-#ifndef __HAVE_DMA_FLUSH
-#define __HAVE_DMA_FLUSH 0
-#endif
-#ifndef __HAVE_DMA_READY
-#define __HAVE_DMA_READY 0
-#endif
-#ifndef __HAVE_DMA_QUIESCENT
-#define __HAVE_DMA_QUIESCENT 0
-#endif
-#ifndef __HAVE_RELEASE
-#define __HAVE_RELEASE 0
-#endif
-#ifndef __HAVE_COUNTERS
-#define __HAVE_COUNTERS 0
-#endif
-#ifndef __HAVE_SG
-#define __HAVE_SG 0
-#endif
-/* __HAVE_KERNEL_CTX_SWITCH isn't used by any of the drm modules in
- * the DRI cvs tree, but it is required by the kernel tree's sparc
- * driver.
- */
-#ifndef __HAVE_KERNEL_CTX_SWITCH
-#define __HAVE_KERNEL_CTX_SWITCH 0
-#endif
-#ifndef __HAVE_DRIVER_FOPS_READ
-#define __HAVE_DRIVER_FOPS_READ 0
-#endif
-#ifndef __HAVE_DRIVER_FOPS_POLL
-#define __HAVE_DRIVER_FOPS_POLL 0
-#endif
-
-#ifndef DRIVER_PREINIT
-#define DRIVER_PREINIT()
-#endif
-#ifndef DRIVER_POSTINIT
-#define DRIVER_POSTINIT()
-#endif
-#ifndef DRIVER_PRERELEASE
-#define DRIVER_PRERELEASE()
-#endif
-#ifndef DRIVER_PRETAKEDOWN
-#define DRIVER_PRETAKEDOWN()
-#endif
-#ifndef DRIVER_POSTCLEANUP
-#define DRIVER_POSTCLEANUP()
-#endif
-#ifndef DRIVER_PRESETUP
-#define DRIVER_PRESETUP()
-#endif
-#ifndef DRIVER_POSTSETUP
-#define DRIVER_POSTSETUP()
-#endif
#ifndef DRIVER_IOCTLS
#define DRIVER_IOCTLS
#endif
-#ifndef DRIVER_OPEN_HELPER
-#define DRIVER_OPEN_HELPER( priv, dev )
-#endif
-#ifndef DRIVER_FOPS
-#define DRIVER_FOPS \
-static struct file_operations DRM(fops) = { \
- .owner = THIS_MODULE, \
- .open = DRM(open), \
- .flush = DRM(flush), \
- .release = DRM(release), \
- .ioctl = DRM(ioctl), \
- .mmap = DRM(mmap), \
- .fasync = DRM(fasync), \
- .poll = DRM(poll), \
- .read = DRM(read), \
-}
-#endif
#ifndef MODULE
/** Use an additional macro to avoid preprocessor troubles */
static drm_device_t DRM(device)[MAX_DEVICES];
static int DRM(numdevs) = 0;
-DRIVER_FOPS;
+struct file_operations DRM(fops) = {
+ .owner = THIS_MODULE,
+ .open = DRM(open),
+ .flush = DRM(flush),
+ .release = DRM(release),
+ .ioctl = DRM(ioctl),
+ .mmap = DRM(mmap),
+ .fasync = DRM(fasync),
+ .poll = DRM(poll),
+ .read = DRM(read),
+};
/** Ioctl table */
-static drm_ioctl_desc_t DRM(ioctls)[] = {
+drm_ioctl_desc_t DRM(ioctls)[] = {
[DRM_IOCTL_NR(DRM_IOCTL_VERSION)] = { DRM(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 },
-#if __HAVE_IRQ
[DRM_IOCTL_NR(DRM_IOCTL_IRQ_BUSID)] = { DRM(irq_by_busid), 0, 1 },
-#endif
[DRM_IOCTL_NR(DRM_IOCTL_GET_MAP)] = { DRM(getmap), 0, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT)] = { DRM(getclient), 0, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_GET_STATS)] = { DRM(getstats), 0, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP)] = { DRM(addmap), 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_RM_MAP)] = { DRM(rmmap), 1, 0 },
-#if __HAVE_CTX_BITMAP
[DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX)] = { DRM(setsareactx), 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX)] = { DRM(getsareactx), 1, 0 },
-#endif
[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_LOCK)] = { DRM(lock), 1, 0 },
[DRM_IOCTL_NR(DRM_IOCTL_UNLOCK)] = { DRM(unlock), 1, 0 },
-#if __HAVE_DMA_FLUSH
- /* Gamma only, really */
- [DRM_IOCTL_NR(DRM_IOCTL_FINISH)] = { DRM(finish), 1, 0 },
-#else
[DRM_IOCTL_NR(DRM_IOCTL_FINISH)] = { DRM(noop), 1, 0 },
-#endif
-#if __HAVE_DMA
[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 },
/* The DRM_IOCTL_DMA ioctl should be defined by the driver. */
-#endif
-#if __HAVE_IRQ || __HAVE_DMA
+
[DRM_IOCTL_NR(DRM_IOCTL_CONTROL)] = { DRM(control), 1, 1 },
-#endif
-#if __REALLY_HAVE_AGP
+#if __OS_HAS_AGP
[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_UNBIND)] = { DRM(agp_unbind), 1, 1 },
#endif
-#if __HAVE_SG
[DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC)] = { DRM(sg_alloc), 1, 1 },
[DRM_IOCTL_NR(DRM_IOCTL_SG_FREE)] = { DRM(sg_free), 1, 1 },
-#endif
-#ifdef __HAVE_VBL_IRQ
[DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK)] = { DRM(wait_vblank), 0, 0 },
-#endif
DRIVER_IOCTLS
};
static int DRM(setup)( drm_device_t *dev )
{
int i;
+ int ret;
+
+ if (dev->fn_tbl.presetup)
+ {
+ ret=dev->fn_tbl.presetup(dev);
+ if (ret!=0)
+ return ret;
+ }
- DRIVER_PRESETUP();
atomic_set( &dev->ioctl_count, 0 );
atomic_set( &dev->vma_count, 0 );
dev->buf_use = 0;
atomic_set( &dev->buf_alloc, 0 );
-#if __HAVE_DMA
- i = DRM(dma_setup)( dev );
- if ( i < 0 )
- return i;
-#endif
-
- dev->counters = 6 + __HAVE_COUNTERS;
- dev->types[0] = _DRM_STAT_LOCK;
- dev->types[1] = _DRM_STAT_OPENS;
- dev->types[2] = _DRM_STAT_CLOSES;
- dev->types[3] = _DRM_STAT_IOCTLS;
- dev->types[4] = _DRM_STAT_LOCKS;
- dev->types[5] = _DRM_STAT_UNLOCKS;
-#ifdef __HAVE_COUNTER6
- dev->types[6] = __HAVE_COUNTER6;
-#endif
-#ifdef __HAVE_COUNTER7
- dev->types[7] = __HAVE_COUNTER7;
-#endif
-#ifdef __HAVE_COUNTER8
- dev->types[8] = __HAVE_COUNTER8;
-#endif
-#ifdef __HAVE_COUNTER9
- dev->types[9] = __HAVE_COUNTER9;
-#endif
-#ifdef __HAVE_COUNTER10
- dev->types[10] = __HAVE_COUNTER10;
-#endif
-#ifdef __HAVE_COUNTER11
- dev->types[11] = __HAVE_COUNTER11;
-#endif
-#ifdef __HAVE_COUNTER12
- dev->types[12] = __HAVE_COUNTER12;
-#endif
-#ifdef __HAVE_COUNTER13
- dev->types[13] = __HAVE_COUNTER13;
-#endif
-#ifdef __HAVE_COUNTER14
- dev->types[14] = __HAVE_COUNTER14;
-#endif
-#ifdef __HAVE_COUNTER15
- dev->types[14] = __HAVE_COUNTER14;
-#endif
+ if (drm_core_check_feature(dev, DRIVER_HAVE_DMA))
+ {
+ i = DRM(dma_setup)( dev );
+ if ( i < 0 )
+ return i;
+ }
for ( i = 0 ; i < DRM_ARRAY_SIZE(dev->counts) ; i++ )
atomic_set( &dev->counts[i], 0 );
* drm_select_queue fails between the time the interrupt is
* initialized and the time the queues are initialized.
*/
- DRIVER_POSTSETUP();
+ if (dev->fn_tbl.postsetup)
+ dev->fn_tbl.postsetup(dev);
+
return 0;
}
DRM_DEBUG( "\n" );
- DRIVER_PRETAKEDOWN();
-#if __HAVE_IRQ
+ if (dev->fn_tbl.pretakedown)
+ dev->fn_tbl.pretakedown(dev);
+
if ( dev->irq_enabled ) DRM(irq_uninstall)( dev );
-#endif
down( &dev->struct_sem );
del_timer( &dev->timer );
dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
}
-#if __REALLY_HAVE_AGP
/* Clear AGP information */
- if ( dev->agp ) {
+ if (drm_core_has_AGP(dev) && dev->agp) {
drm_agp_mem_t *entry;
drm_agp_mem_t *nexte;
dev->agp->acquired = 0;
dev->agp->enabled = 0;
}
-#endif
/* Clear vma list (only built for debugging) */
if ( dev->vmalist ) {
switch ( map->type ) {
case _DRM_REGISTERS:
case _DRM_FRAME_BUFFER:
-#if __REALLY_HAVE_MTRR
- if ( map->mtrr >= 0 ) {
- int retcode;
- retcode = mtrr_del( map->mtrr,
- map->offset,
- map->size );
- DRM_DEBUG( "mtrr_del=%d\n", retcode );
+ if (drm_core_has_MTRR(dev)) {
+ 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, dev );
break;
case _DRM_SHM:
*/
break;
case _DRM_SCATTER_GATHER:
- /* Handle it, but do nothing, if HAVE_SG
- * isn't defined.
- */
-#if __HAVE_SG
- if(dev->sg) {
+ /* Handle it */
+ if (drm_core_check_feature(dev, DRIVER_SG) && dev->sg) {
DRM(sg_cleanup)(dev->sg);
dev->sg = NULL;
}
-#endif
break;
}
DRM(free)(map, sizeof(*map), DRM_MEM_MAPS);
dev->maplist = NULL;
}
-#if __HAVE_DMA_QUEUE || __HAVE_MULTIPLE_DMA_QUEUES
- if ( dev->queuelist ) {
+ if (drm_core_check_feature(dev, DRIVER_DMA_QUEUE) && dev->queuelist ) {
for ( i = 0 ; i < dev->queue_count ; i++ ) {
-#if __HAVE_DMA_WAITLIST
- DRM(waitlist_destroy)( &dev->queuelist[i]->waitlist );
-#endif
if ( dev->queuelist[i] ) {
DRM(free)( dev->queuelist[i],
sizeof(*dev->queuelist[0]),
dev->queuelist = NULL;
}
dev->queue_count = 0;
-#endif
-#if __HAVE_DMA
- DRM(dma_takedown)( dev );
-#endif
+ if (drm_core_check_feature(dev, DRIVER_HAVE_DMA))
+ DRM(dma_takedown)( dev );
+
if ( dev->lock.hw_lock ) {
dev->sigdata.lock = dev->lock.hw_lock = NULL; /* SHM removed */
dev->lock.filp = NULL;
return 0;
}
+static void DRM(init_fn_table)(struct drm_device *dev)
+{
+ dev->fn_tbl.reclaim_buffers = DRM(core_reclaim_buffers);
+ dev->fn_tbl.get_map_ofs = DRM(core_get_map_ofs);
+ dev->fn_tbl.get_reg_ofs = DRM(core_get_reg_ofs);
+}
+
#include "drm_pciids.h"
static struct pci_device_id DRM(pciidlist)[] = {
static int DRM(probe)(struct pci_dev *pdev)
{
drm_device_t *dev;
-#if __HAVE_CTX_BITMAP
int retcode;
-#endif
int i;
int is_compat = 0;
if (DRM(numdevs) >= MAX_DEVICES)
return -ENODEV;
+ if ((retcode=pci_enable_device(pdev)))
+ return retcode;
+
dev = &(DRM(device)[DRM(numdevs)]);
memset( (void *)dev, 0, sizeof(*dev) );
dev->pci_func = PCI_FUNC(pdev->devfn);
dev->irq = pdev->irq;
- DRIVER_PREINIT();
+ /* dev_priv_size can be changed by a driver in driver_register_fns */
+ dev->dev_priv_size = sizeof(u32);
-#if __REALLY_HAVE_AGP
- dev->agp = DRM(agp_init)();
-#if __MUST_HAVE_AGP
- if ( dev->agp == NULL ) {
- DRM_ERROR( "Cannot initialize the agpgart module.\n" );
- DRM(stub_unregister)(dev->minor);
- DRM(takedown)( dev );
- return -EINVAL;
+ /* the DRM has 6 basic counters - drivers add theirs in register_fns */
+ dev->counters = 6;
+ dev->types[0] = _DRM_STAT_LOCK;
+ dev->types[1] = _DRM_STAT_OPENS;
+ dev->types[2] = _DRM_STAT_CLOSES;
+ dev->types[3] = _DRM_STAT_IOCTLS;
+ dev->types[4] = _DRM_STAT_LOCKS;
+ dev->types[5] = _DRM_STAT_UNLOCKS;
+
+ DRM(init_fn_table)(dev);
+
+ DRM(driver_register_fns)(dev);
+
+ if (dev->fn_tbl.preinit)
+ dev->fn_tbl.preinit(dev);
+
+ if (drm_core_has_AGP(dev))
+ {
+ dev->agp = DRM(agp_init)();
+ if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) && (dev->agp == NULL)) {
+ DRM_ERROR( "Cannot initialize the agpgart module.\n" );
+ DRM(stub_unregister)(dev->minor);
+ DRM(takedown)( dev );
+ return -EINVAL;
+ }
+ if (drm_core_has_MTRR(dev)) {
+ if (dev->agp)
+ 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 __REALLY_HAVE_MTRR
- if (dev->agp)
- 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
-#endif
-#if __HAVE_CTX_BITMAP
retcode = DRM(ctxbitmap_init)( dev );
if( retcode ) {
DRM_ERROR( "Cannot allocate memory for context bitmap.\n" );
DRM(stub_unregister)(dev->minor);
DRM(takedown)( dev );
return retcode;
- }
-#endif
+ }
+
DRM(numdevs)++; /* no errors, mark it reserved */
DRM_INFO( "Initialized %s %d.%d.%d %s on minor %d: %s\n",
dev->minor,
pci_pretty_name(pdev));
- DRIVER_POSTINIT();
+ if (dev->fn_tbl.postinit)
+ dev->fn_tbl.postinit(dev);
return 0;
}
DRM_INFO( "Module unloaded\n" );
}
}
-#if __HAVE_CTX_BITMAP
+
DRM(ctxbitmap_cleanup)( dev );
-#endif
-#if __REALLY_HAVE_AGP && __REALLY_HAVE_MTRR
- if ( dev->agp && dev->agp->agp_mtrr >= 0) {
+ if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) &&
+ dev->agp && dev->agp->agp_mtrr >= 0) {
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
DRM(takedown)( dev );
-#if __REALLY_HAVE_AGP
- if ( dev->agp ) {
+ if (drm_core_has_AGP(dev) && dev->agp ) {
DRM(agp_uninit)();
DRM(free)( dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS );
dev->agp = NULL;
}
-#endif
+
+ if (dev->fn_tbl.postcleanup)
+ dev->fn_tbl.postcleanup(dev);
+
}
- DRIVER_POSTCLEANUP();
DRM(numdevs) = 0;
}
DRM_DEBUG( "open_count = %d\n", dev->open_count );
- DRIVER_PRERELEASE();
+ if (dev->fn_tbl.prerelease)
+ dev->fn_tbl.prerelease(dev, filp);
/* ========================================================
* Begin inline drm_release
DRM_DEBUG( "File %p released, freeing lock for context %d\n",
filp,
_DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock) );
-#if __HAVE_RELEASE
- DRIVER_RELEASE();
-#endif
+
+ if (dev->fn_tbl.release)
+ dev->fn_tbl.release(dev, filp);
+
DRM(lock_free)( dev, &dev->lock.hw_lock->lock,
_DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock) );
processed via a callback to the X
server. */
}
-#if __HAVE_RELEASE
- else if ( priv->lock_count && dev->lock.hw_lock ) {
+ else if ( dev->fn_tbl.release && priv->lock_count && 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;
+ __set_current_state(TASK_INTERRUPTIBLE);
if ( !dev->lock.hw_lock ) {
/* Device has been unregistered */
retcode = -EINTR;
break;
}
}
- current->state = TASK_RUNNING;
+ __set_current_state(TASK_RUNNING);
remove_wait_queue( &dev->lock.lock_queue, &entry );
if( !retcode ) {
- DRIVER_RELEASE();
+ if (dev->fn_tbl.release)
+ dev->fn_tbl.release(dev, filp);
DRM(lock_free)( dev, &dev->lock.hw_lock->lock,
DRM_KERNEL_CONTEXT );
}
}
-#elif __HAVE_DMA
- DRM(reclaim_buffers)( filp );
-#endif
+
+ if (drm_core_check_feature(dev, DRIVER_HAVE_DMA))
+ {
+ dev->fn_tbl.reclaim_buffers(filp);
+ }
DRM(fasync)( -1, filp, 0 );
list_for_each_entry_safe( pos, n, &dev->ctxlist->head, head ) {
if ( pos->tag == priv &&
pos->handle != DRM_KERNEL_CONTEXT ) {
-#ifdef DRIVER_CTX_DTOR
- DRIVER_CTX_DTOR(pos->handle);
-#endif
-#if __HAVE_CTX_BITMAP
+ if (dev->fn_tbl.context_dtor)
+ dev->fn_tbl.context_dtor(dev, pos->handle);
+
DRM(ctxbitmap_free)( dev, pos->handle );
-#endif
+
list_del( &pos->head );
DRM(free)( pos, sizeof(*pos), DRM_MEM_CTXLIST );
+ --dev->ctx_count;
}
}
}
}
up( &dev->struct_sem );
+ if (dev->fn_tbl.free_filp_priv)
+ dev->fn_tbl.free_filp_priv(dev, priv);
+
DRM(free)( priv, sizeof(*priv), DRM_MEM_FILES );
/* ========================================================
DECLARE_WAITQUEUE( entry, current );
drm_lock_t lock;
int ret = 0;
-#if __HAVE_MULTIPLE_DMA_QUEUES
- drm_queue_t *q;
-#endif
++priv->lock_count;
lock.context, current->pid,
dev->lock.hw_lock->lock, lock.flags );
-#if __HAVE_DMA_QUEUE
- if ( lock.context < 0 )
- return -EINVAL;
-#elif __HAVE_MULTIPLE_DMA_QUEUES
- if ( lock.context < 0 || lock.context >= dev->queue_count )
- return -EINVAL;
- q = dev->queuelist[lock.context];
-#endif
+ if (drm_core_check_feature(dev, DRIVER_DMA_QUEUE))
+ if ( lock.context < 0 )
+ return -EINVAL;
-#if __HAVE_DMA_FLUSH
- ret = DRM(flush_block_and_flush)( dev, lock.context, lock.flags );
-#endif
- if ( !ret ) {
- add_wait_queue( &dev->lock.lock_queue, &entry );
- for (;;) {
- current->state = TASK_INTERRUPTIBLE;
- if ( !dev->lock.hw_lock ) {
- /* Device has been unregistered */
- ret = -EINTR;
- break;
- }
- if ( DRM(lock_take)( &dev->lock.hw_lock->lock,
- lock.context ) ) {
- dev->lock.filp = filp;
- dev->lock.lock_time = jiffies;
- atomic_inc( &dev->counts[_DRM_STAT_LOCKS] );
- break; /* Got lock */
- }
-
- /* Contention */
- schedule();
- if ( signal_pending( current ) ) {
- ret = -ERESTARTSYS;
- break;
- }
- }
- current->state = TASK_RUNNING;
- remove_wait_queue( &dev->lock.lock_queue, &entry );
- }
-
-#if __HAVE_DMA_FLUSH
- DRM(flush_unblock)( dev, lock.context, lock.flags ); /* cleanup phase */
-#endif
-
- if ( !ret ) {
- sigemptyset( &dev->sigmask );
- sigaddset( &dev->sigmask, SIGSTOP );
- sigaddset( &dev->sigmask, SIGTSTP );
- sigaddset( &dev->sigmask, SIGTTIN );
- sigaddset( &dev->sigmask, SIGTTOU );
- dev->sigdata.context = lock.context;
- dev->sigdata.lock = dev->lock.hw_lock;
- block_all_signals( DRM(notifier),
- &dev->sigdata, &dev->sigmask );
-
-#if __HAVE_DMA_READY
- if ( lock.flags & _DRM_LOCK_READY ) {
- DRIVER_DMA_READY();
+ add_wait_queue( &dev->lock.lock_queue, &entry );
+ for (;;) {
+ __set_current_state(TASK_INTERRUPTIBLE);
+ if ( !dev->lock.hw_lock ) {
+ /* Device has been unregistered */
+ ret = -EINTR;
+ break;
}
-#endif
-#if __HAVE_DMA_QUIESCENT
- if ( lock.flags & _DRM_LOCK_QUIESCENT ) {
- DRIVER_DMA_QUIESCENT();
+ if ( DRM(lock_take)( &dev->lock.hw_lock->lock,
+ lock.context ) ) {
+ dev->lock.filp = filp;
+ dev->lock.lock_time = jiffies;
+ atomic_inc( &dev->counts[_DRM_STAT_LOCKS] );
+ break; /* Got lock */
}
-#endif
- /* __HAVE_KERNEL_CTX_SWITCH isn't used by any of the
- * drm modules in the DRI cvs tree, but it is required
- * by the Sparc driver.
- */
-#if __HAVE_KERNEL_CTX_SWITCH
- if ( dev->last_context != lock.context ) {
- DRM(context_switch)(dev, dev->last_context,
- lock.context);
+
+ /* Contention */
+ schedule();
+ if ( signal_pending( current ) ) {
+ ret = -ERESTARTSYS;
+ break;
}
-#endif
- }
-
+ }
+ __set_current_state(TASK_RUNNING);
+ remove_wait_queue( &dev->lock.lock_queue, &entry );
+
+ sigemptyset( &dev->sigmask );
+ sigaddset( &dev->sigmask, SIGSTOP );
+ sigaddset( &dev->sigmask, SIGTSTP );
+ sigaddset( &dev->sigmask, SIGTTIN );
+ sigaddset( &dev->sigmask, SIGTTOU );
+ dev->sigdata.context = lock.context;
+ dev->sigdata.lock = dev->lock.hw_lock;
+ block_all_signals( DRM(notifier),
+ &dev->sigdata, &dev->sigmask );
+
+ if (dev->fn_tbl.dma_ready && (lock.flags & _DRM_LOCK_READY))
+ dev->fn_tbl.dma_ready(dev);
+
+ if ( dev->fn_tbl.dma_quiescent && (lock.flags & _DRM_LOCK_QUIESCENT ))
+ return dev->fn_tbl.dma_quiescent(dev);
+
+ /* dev->fn_tbl.kernel_context_switch isn't used by any of the x86
+ * drivers but is used by the Sparc driver.
+ */
+
+ if (dev->fn_tbl.kernel_context_switch &&
+ dev->last_context != lock.context) {
+ dev->fn_tbl.kernel_context_switch(dev, dev->last_context,
+ lock.context);
+ }
DRM_DEBUG( "%d %s\n", lock.context, ret ? "interrupted" : "has lock" );
return ret;
atomic_inc( &dev->counts[_DRM_STAT_UNLOCKS] );
- /* __HAVE_KERNEL_CTX_SWITCH isn't used by any of the drm
- * modules in the DRI cvs tree, but it is required by the
- * Sparc driver.
- */
-#if __HAVE_KERNEL_CTX_SWITCH
- /* We no longer really hold it, but if we are the next
- * agent to request it then we should just be able to
- * take it immediately and not eat the ioctl.
+ /* kernel_context_switch isn't used by any of the x86 drm
+ * modules but is required by the Sparc driver.
*/
- dev->lock.filp = NULL;
- {
- __volatile__ unsigned int *plock = &dev->lock.hw_lock->lock;
- unsigned int old, new, prev, ctx;
-
- ctx = lock.context;
- do {
- old = *plock;
- new = ctx;
- prev = cmpxchg(plock, old, new);
- } while (prev != old);
- }
- wake_up_interruptible(&dev->lock.lock_queue);
-#else
- DRM(lock_transfer)( dev, &dev->lock.hw_lock->lock,
- DRM_KERNEL_CONTEXT );
-#if __HAVE_DMA_SCHEDULE
- DRM(dma_schedule)( dev, 1 );
-#endif
-
- if ( DRM(lock_free)( dev, &dev->lock.hw_lock->lock,
- DRM_KERNEL_CONTEXT ) ) {
- DRM_ERROR( "\n" );
+ if (dev->fn_tbl.kernel_context_switch_unlock)
+ dev->fn_tbl.kernel_context_switch_unlock(dev, &lock);
+ else {
+ DRM(lock_transfer)( dev, &dev->lock.hw_lock->lock,
+ DRM_KERNEL_CONTEXT );
+
+ if ( DRM(lock_free)( dev, &dev->lock.hw_lock->lock,
+ DRM_KERNEL_CONTEXT ) ) {
+ DRM_ERROR( "\n" );
+ }
}
-#endif /* !__HAVE_KERNEL_CTX_SWITCH */
unblock_all_signals();
return 0;
git://git.onelab.eu / linux-2.6.git / blobdiff