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Diffstat (limited to 'drivers/char/drm/gamma_dma.c')
-rw-r--r--drivers/char/drm/gamma_dma.c946
1 files changed, 0 insertions, 946 deletions
diff --git a/drivers/char/drm/gamma_dma.c b/drivers/char/drm/gamma_dma.c
deleted file mode 100644
index e486fb8..0000000
--- a/drivers/char/drm/gamma_dma.c
+++ /dev/null
@@ -1,946 +0,0 @@
-/* gamma_dma.c -- DMA support for GMX 2000 -*- linux-c -*-
- * Created: Fri Mar 19 14:30:16 1999 by faith@precisioninsight.com
- *
- * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
- * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
- * All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * 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
- * PRECISION INSIGHT 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>
- *
- */
-
-#include "gamma.h"
-#include "drmP.h"
-#include "drm.h"
-#include "gamma_drm.h"
-#include "gamma_drv.h"
-
-#include <linux/interrupt.h> /* For task queue support */
-#include <linux/delay.h>
-
-static inline void gamma_dma_dispatch(drm_device_t *dev, unsigned long address,
- unsigned long length)
-{
- drm_gamma_private_t *dev_priv =
- (drm_gamma_private_t *)dev->dev_private;
- mb();
- while ( GAMMA_READ(GAMMA_INFIFOSPACE) < 2)
- cpu_relax();
-
- GAMMA_WRITE(GAMMA_DMAADDRESS, address);
-
- while (GAMMA_READ(GAMMA_GCOMMANDSTATUS) != 4)
- cpu_relax();
-
- GAMMA_WRITE(GAMMA_DMACOUNT, length / 4);
-}
-
-void gamma_dma_quiescent_single(drm_device_t *dev)
-{
- drm_gamma_private_t *dev_priv =
- (drm_gamma_private_t *)dev->dev_private;
- while (GAMMA_READ(GAMMA_DMACOUNT))
- cpu_relax();
-
- while (GAMMA_READ(GAMMA_INFIFOSPACE) < 2)
- cpu_relax();
-
- GAMMA_WRITE(GAMMA_FILTERMODE, 1 << 10);
- GAMMA_WRITE(GAMMA_SYNC, 0);
-
- do {
- while (!GAMMA_READ(GAMMA_OUTFIFOWORDS))
- cpu_relax();
- } while (GAMMA_READ(GAMMA_OUTPUTFIFO) != GAMMA_SYNC_TAG);
-}
-
-void gamma_dma_quiescent_dual(drm_device_t *dev)
-{
- drm_gamma_private_t *dev_priv =
- (drm_gamma_private_t *)dev->dev_private;
- while (GAMMA_READ(GAMMA_DMACOUNT))
- cpu_relax();
-
- while (GAMMA_READ(GAMMA_INFIFOSPACE) < 3)
- cpu_relax();
-
- GAMMA_WRITE(GAMMA_BROADCASTMASK, 3);
- GAMMA_WRITE(GAMMA_FILTERMODE, 1 << 10);
- GAMMA_WRITE(GAMMA_SYNC, 0);
-
- /* Read from first MX */
- do {
- while (!GAMMA_READ(GAMMA_OUTFIFOWORDS))
- cpu_relax();
- } while (GAMMA_READ(GAMMA_OUTPUTFIFO) != GAMMA_SYNC_TAG);
-
- /* Read from second MX */
- do {
- while (!GAMMA_READ(GAMMA_OUTFIFOWORDS + 0x10000))
- cpu_relax();
- } while (GAMMA_READ(GAMMA_OUTPUTFIFO + 0x10000) != GAMMA_SYNC_TAG);
-}
-
-void gamma_dma_ready(drm_device_t *dev)
-{
- drm_gamma_private_t *dev_priv =
- (drm_gamma_private_t *)dev->dev_private;
- while (GAMMA_READ(GAMMA_DMACOUNT))
- cpu_relax();
-}
-
-static inline int gamma_dma_is_ready(drm_device_t *dev)
-{
- drm_gamma_private_t *dev_priv =
- (drm_gamma_private_t *)dev->dev_private;
- return (!GAMMA_READ(GAMMA_DMACOUNT));
-}
-
-irqreturn_t gamma_driver_irq_handler( DRM_IRQ_ARGS )
-{
- drm_device_t *dev = (drm_device_t *)arg;
- drm_device_dma_t *dma = dev->dma;
- drm_gamma_private_t *dev_priv =
- (drm_gamma_private_t *)dev->dev_private;
-
- /* FIXME: should check whether we're actually interested in the interrupt? */
- atomic_inc(&dev->counts[6]); /* _DRM_STAT_IRQ */
-
- while (GAMMA_READ(GAMMA_INFIFOSPACE) < 3)
- cpu_relax();
-
- GAMMA_WRITE(GAMMA_GDELAYTIMER, 0xc350/2); /* 0x05S */
- GAMMA_WRITE(GAMMA_GCOMMANDINTFLAGS, 8);
- GAMMA_WRITE(GAMMA_GINTFLAGS, 0x2001);
- if (gamma_dma_is_ready(dev)) {
- /* Free previous buffer */
- if (test_and_set_bit(0, &dev->dma_flag))
- return IRQ_HANDLED;
- if (dma->this_buffer) {
- gamma_free_buffer(dev, dma->this_buffer);
- dma->this_buffer = NULL;
- }
- clear_bit(0, &dev->dma_flag);
-
- /* Dispatch new buffer */
- schedule_work(&dev->work);
- }
- return IRQ_HANDLED;
-}
-
-/* Only called by gamma_dma_schedule. */
-static int gamma_do_dma(drm_device_t *dev, int locked)
-{
- unsigned long address;
- unsigned long length;
- drm_buf_t *buf;
- int retcode = 0;
- drm_device_dma_t *dma = dev->dma;
-
- if (test_and_set_bit(0, &dev->dma_flag)) return -EBUSY;
-
-
- if (!dma->next_buffer) {
- DRM_ERROR("No next_buffer\n");
- clear_bit(0, &dev->dma_flag);
- return -EINVAL;
- }
-
- buf = dma->next_buffer;
- /* WE NOW ARE ON LOGICAL PAGES!! - using page table setup in dma_init */
- /* So we pass the buffer index value into the physical page offset */
- address = buf->idx << 12;
- length = buf->used;
-
- DRM_DEBUG("context %d, buffer %d (%ld bytes)\n",
- buf->context, buf->idx, length);
-
- if (buf->list == DRM_LIST_RECLAIM) {
- gamma_clear_next_buffer(dev);
- gamma_free_buffer(dev, buf);
- clear_bit(0, &dev->dma_flag);
- return -EINVAL;
- }
-
- if (!length) {
- DRM_ERROR("0 length buffer\n");
- gamma_clear_next_buffer(dev);
- gamma_free_buffer(dev, buf);
- clear_bit(0, &dev->dma_flag);
- return 0;
- }
-
- if (!gamma_dma_is_ready(dev)) {
- clear_bit(0, &dev->dma_flag);
- return -EBUSY;
- }
-
- if (buf->while_locked) {
- if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)) {
- DRM_ERROR("Dispatching buffer %d from pid %d"
- " \"while locked\", but no lock held\n",
- buf->idx, current->pid);
- }
- } else {
- if (!locked && !gamma_lock_take(&dev->lock.hw_lock->lock,
- DRM_KERNEL_CONTEXT)) {
- clear_bit(0, &dev->dma_flag);
- return -EBUSY;
- }
- }
-
- if (dev->last_context != buf->context
- && !(dev->queuelist[buf->context]->flags
- & _DRM_CONTEXT_PRESERVED)) {
- /* PRE: dev->last_context != buf->context */
- if (DRM(context_switch)(dev, dev->last_context,
- buf->context)) {
- DRM(clear_next_buffer)(dev);
- DRM(free_buffer)(dev, buf);
- }
- retcode = -EBUSY;
- goto cleanup;
-
- /* POST: we will wait for the context
- switch and will dispatch on a later call
- when dev->last_context == buf->context.
- NOTE WE HOLD THE LOCK THROUGHOUT THIS
- TIME! */
- }
-
- gamma_clear_next_buffer(dev);
- buf->pending = 1;
- buf->waiting = 0;
- buf->list = DRM_LIST_PEND;
-
- /* WE NOW ARE ON LOGICAL PAGES!!! - overriding address */
- address = buf->idx << 12;
-
- gamma_dma_dispatch(dev, address, length);
- gamma_free_buffer(dev, dma->this_buffer);
- dma->this_buffer = buf;
-
- atomic_inc(&dev->counts[7]); /* _DRM_STAT_DMA */
- atomic_add(length, &dev->counts[8]); /* _DRM_STAT_PRIMARY */
-
- if (!buf->while_locked && !dev->context_flag && !locked) {
- if (gamma_lock_free(dev, &dev->lock.hw_lock->lock,
- DRM_KERNEL_CONTEXT)) {
- DRM_ERROR("\n");
- }
- }
-cleanup:
-
- clear_bit(0, &dev->dma_flag);
-
-
- return retcode;
-}
-
-static void gamma_dma_timer_bh(unsigned long dev)
-{
- gamma_dma_schedule((drm_device_t *)dev, 0);
-}
-
-void gamma_irq_immediate_bh(void *dev)
-{
- gamma_dma_schedule(dev, 0);
-}
-
-int gamma_dma_schedule(drm_device_t *dev, int locked)
-{
- int next;
- drm_queue_t *q;
- drm_buf_t *buf;
- int retcode = 0;
- int processed = 0;
- int missed;
- int expire = 20;
- drm_device_dma_t *dma = dev->dma;
-
- if (test_and_set_bit(0, &dev->interrupt_flag)) {
- /* Not reentrant */
- atomic_inc(&dev->counts[10]); /* _DRM_STAT_MISSED */
- return -EBUSY;
- }
- missed = atomic_read(&dev->counts[10]);
-
-
-again:
- if (dev->context_flag) {
- clear_bit(0, &dev->interrupt_flag);
- return -EBUSY;
- }
- if (dma->next_buffer) {
- /* Unsent buffer that was previously
- selected, but that couldn't be sent
- because the lock could not be obtained
- or the DMA engine wasn't ready. Try
- again. */
- if (!(retcode = gamma_do_dma(dev, locked))) ++processed;
- } else {
- do {
- next = gamma_select_queue(dev, gamma_dma_timer_bh);
- if (next >= 0) {
- q = dev->queuelist[next];
- buf = gamma_waitlist_get(&q->waitlist);
- dma->next_buffer = buf;
- dma->next_queue = q;
- if (buf && buf->list == DRM_LIST_RECLAIM) {
- gamma_clear_next_buffer(dev);
- gamma_free_buffer(dev, buf);
- }
- }
- } while (next >= 0 && !dma->next_buffer);
- if (dma->next_buffer) {
- if (!(retcode = gamma_do_dma(dev, locked))) {
- ++processed;
- }
- }
- }
-
- if (--expire) {
- if (missed != atomic_read(&dev->counts[10])) {
- if (gamma_dma_is_ready(dev)) goto again;
- }
- if (processed && gamma_dma_is_ready(dev)) {
- processed = 0;
- goto again;
- }
- }
-
- clear_bit(0, &dev->interrupt_flag);
-
- return retcode;
-}
-
-static int gamma_dma_priority(struct file *filp,
- drm_device_t *dev, drm_dma_t *d)
-{
- unsigned long address;
- unsigned long length;
- int must_free = 0;
- int retcode = 0;
- int i;
- int idx;
- drm_buf_t *buf;
- drm_buf_t *last_buf = NULL;
- drm_device_dma_t *dma = dev->dma;
- int *send_indices = NULL;
- int *send_sizes = NULL;
-
- DECLARE_WAITQUEUE(entry, current);
-
- /* Turn off interrupt handling */
- while (test_and_set_bit(0, &dev->interrupt_flag)) {
- schedule();
- if (signal_pending(current)) return -EINTR;
- }
- if (!(d->flags & _DRM_DMA_WHILE_LOCKED)) {
- while (!gamma_lock_take(&dev->lock.hw_lock->lock,
- DRM_KERNEL_CONTEXT)) {
- schedule();
- if (signal_pending(current)) {
- clear_bit(0, &dev->interrupt_flag);
- return -EINTR;
- }
- }
- ++must_free;
- }
-
- send_indices = DRM(alloc)(d->send_count * sizeof(*send_indices),
- DRM_MEM_DRIVER);
- if (send_indices == NULL)
- return -ENOMEM;
- if (copy_from_user(send_indices, d->send_indices,
- d->send_count * sizeof(*send_indices))) {
- retcode = -EFAULT;
- goto cleanup;
- }
-
- send_sizes = DRM(alloc)(d->send_count * sizeof(*send_sizes),
- DRM_MEM_DRIVER);
- if (send_sizes == NULL)
- return -ENOMEM;
- if (copy_from_user(send_sizes, d->send_sizes,
- d->send_count * sizeof(*send_sizes))) {
- retcode = -EFAULT;
- goto cleanup;
- }
-
- for (i = 0; i < d->send_count; i++) {
- idx = send_indices[i];
- if (idx < 0 || idx >= dma->buf_count) {
- DRM_ERROR("Index %d (of %d max)\n",
- send_indices[i], dma->buf_count - 1);
- continue;
- }
- buf = dma->buflist[ idx ];
- if (buf->filp != filp) {
- DRM_ERROR("Process %d using buffer not owned\n",
- current->pid);
- retcode = -EINVAL;
- goto cleanup;
- }
- if (buf->list != DRM_LIST_NONE) {
- DRM_ERROR("Process %d using buffer on list %d\n",
- current->pid, buf->list);
- retcode = -EINVAL;
- goto cleanup;
- }
- /* This isn't a race condition on
- buf->list, since our concern is the
- buffer reclaim during the time the
- process closes the /dev/drm? handle, so
- it can't also be doing DMA. */
- buf->list = DRM_LIST_PRIO;
- buf->used = send_sizes[i];
- buf->context = d->context;
- buf->while_locked = d->flags & _DRM_DMA_WHILE_LOCKED;
- address = (unsigned long)buf->address;
- length = buf->used;
- if (!length) {
- DRM_ERROR("0 length buffer\n");
- }
- if (buf->pending) {
- DRM_ERROR("Sending pending buffer:"
- " buffer %d, offset %d\n",
- send_indices[i], i);
- retcode = -EINVAL;
- goto cleanup;
- }
- if (buf->waiting) {
- DRM_ERROR("Sending waiting buffer:"
- " buffer %d, offset %d\n",
- send_indices[i], i);
- retcode = -EINVAL;
- goto cleanup;
- }
- buf->pending = 1;
-
- if (dev->last_context != buf->context
- && !(dev->queuelist[buf->context]->flags
- & _DRM_CONTEXT_PRESERVED)) {
- add_wait_queue(&dev->context_wait, &entry);
- current->state = TASK_INTERRUPTIBLE;
- /* PRE: dev->last_context != buf->context */
- DRM(context_switch)(dev, dev->last_context,
- buf->context);
- /* POST: we will wait for the context
- switch and will dispatch on a later call
- when dev->last_context == buf->context.
- NOTE WE HOLD THE LOCK THROUGHOUT THIS
- TIME! */
- schedule();
- current->state = TASK_RUNNING;
- remove_wait_queue(&dev->context_wait, &entry);
- if (signal_pending(current)) {
- retcode = -EINTR;
- goto cleanup;
- }
- if (dev->last_context != buf->context) {
- DRM_ERROR("Context mismatch: %d %d\n",
- dev->last_context,
- buf->context);
- }
- }
-
- gamma_dma_dispatch(dev, address, length);
- atomic_inc(&dev->counts[9]); /* _DRM_STAT_SPECIAL */
- atomic_add(length, &dev->counts[8]); /* _DRM_STAT_PRIMARY */
-
- if (last_buf) {
- gamma_free_buffer(dev, last_buf);
- }
- last_buf = buf;
- }
-
-
-cleanup:
- if (last_buf) {
- gamma_dma_ready(dev);
- gamma_free_buffer(dev, last_buf);
- }
- if (send_indices)
- DRM(free)(send_indices, d->send_count * sizeof(*send_indices),
- DRM_MEM_DRIVER);
- if (send_sizes)
- DRM(free)(send_sizes, d->send_count * sizeof(*send_sizes),
- DRM_MEM_DRIVER);
-
- if (must_free && !dev->context_flag) {
- if (gamma_lock_free(dev, &dev->lock.hw_lock->lock,
- DRM_KERNEL_CONTEXT)) {
- DRM_ERROR("\n");
- }
- }
- clear_bit(0, &dev->interrupt_flag);
- return retcode;
-}
-
-static int gamma_dma_send_buffers(struct file *filp,
- drm_device_t *dev, drm_dma_t *d)
-{
- DECLARE_WAITQUEUE(entry, current);
- drm_buf_t *last_buf = NULL;
- int retcode = 0;
- drm_device_dma_t *dma = dev->dma;
- int send_index;
-
- if (get_user(send_index, &d->send_indices[d->send_count-1]))
- return -EFAULT;
-
- if (d->flags & _DRM_DMA_BLOCK) {
- last_buf = dma->buflist[send_index];
- add_wait_queue(&last_buf->dma_wait, &entry);
- }
-
- if ((retcode = gamma_dma_enqueue(filp, d))) {
- if (d->flags & _DRM_DMA_BLOCK)
- remove_wait_queue(&last_buf->dma_wait, &entry);
- return retcode;
- }
-
- gamma_dma_schedule(dev, 0);
-
- if (d->flags & _DRM_DMA_BLOCK) {
- DRM_DEBUG("%d waiting\n", current->pid);
- for (;;) {
- current->state = TASK_INTERRUPTIBLE;
- if (!last_buf->waiting && !last_buf->pending)
- break; /* finished */
- schedule();
- if (signal_pending(current)) {
- retcode = -EINTR; /* Can't restart */
- break;
- }
- }
- current->state = TASK_RUNNING;
- DRM_DEBUG("%d running\n", current->pid);
- remove_wait_queue(&last_buf->dma_wait, &entry);
- if (!retcode
- || (last_buf->list==DRM_LIST_PEND && !last_buf->pending)) {
- if (!waitqueue_active(&last_buf->dma_wait)) {
- gamma_free_buffer(dev, last_buf);
- }
- }
- if (retcode) {
- DRM_ERROR("ctx%d w%d p%d c%ld i%d l%d pid:%d\n",
- d->context,
- last_buf->waiting,
- last_buf->pending,
- (long)DRM_WAITCOUNT(dev, d->context),
- last_buf->idx,
- last_buf->list,
- current->pid);
- }
- }
- return retcode;
-}
-
-int gamma_dma(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_device_dma_t *dma = dev->dma;
- int retcode = 0;
- drm_dma_t __user *argp = (void __user *)arg;
- drm_dma_t d;
-
- if (copy_from_user(&d, argp, sizeof(d)))
- return -EFAULT;
-
- if (d.send_count < 0 || d.send_count > dma->buf_count) {
- DRM_ERROR("Process %d trying to send %d buffers (of %d max)\n",
- current->pid, d.send_count, dma->buf_count);
- return -EINVAL;
- }
-
- if (d.request_count < 0 || d.request_count > dma->buf_count) {
- DRM_ERROR("Process %d trying to get %d buffers (of %d max)\n",
- current->pid, d.request_count, dma->buf_count);
- return -EINVAL;
- }
-
- if (d.send_count) {
- if (d.flags & _DRM_DMA_PRIORITY)
- retcode = gamma_dma_priority(filp, dev, &d);
- else
- retcode = gamma_dma_send_buffers(filp, dev, &d);
- }
-
- d.granted_count = 0;
-
- if (!retcode && d.request_count) {
- retcode = gamma_dma_get_buffers(filp, &d);
- }
-
- DRM_DEBUG("%d returning, granted = %d\n",
- current->pid, d.granted_count);
- if (copy_to_user(argp, &d, sizeof(d)))
- return -EFAULT;
-
- return retcode;
-}
-
-/* =============================================================
- * DMA initialization, cleanup
- */
-
-static int gamma_do_init_dma( drm_device_t *dev, drm_gamma_init_t *init )
-{
- drm_gamma_private_t *dev_priv;
- drm_device_dma_t *dma = dev->dma;
- drm_buf_t *buf;
- int i;
- struct list_head *list;
- unsigned long *pgt;
-
- DRM_DEBUG( "%s\n", __FUNCTION__ );
-
- dev_priv = DRM(alloc)( sizeof(drm_gamma_private_t),
- DRM_MEM_DRIVER );
- if ( !dev_priv )
- return -ENOMEM;
-
- dev->dev_private = (void *)dev_priv;
-
- memset( dev_priv, 0, sizeof(drm_gamma_private_t) );
-
- dev_priv->num_rast = init->num_rast;
-
- list_for_each(list, &dev->maplist->head) {
- drm_map_list_t *r_list = list_entry(list, drm_map_list_t, head);
- if( r_list->map &&
- r_list->map->type == _DRM_SHM &&
- r_list->map->flags & _DRM_CONTAINS_LOCK ) {
- dev_priv->sarea = r_list->map;
- break;
- }
- }
-
- dev_priv->mmio0 = drm_core_findmap(dev, init->mmio0);
- dev_priv->mmio1 = drm_core_findmap(dev, init->mmio1);
- dev_priv->mmio2 = drm_core_findmap(dev, init->mmio2);
- dev_priv->mmio3 = drm_core_findmap(dev, init->mmio3);
-
- dev_priv->sarea_priv = (drm_gamma_sarea_t *)
- ((u8 *)dev_priv->sarea->handle +
- init->sarea_priv_offset);
-
- if (init->pcimode) {
- buf = dma->buflist[GLINT_DRI_BUF_COUNT];
- pgt = buf->address;
-
- for (i = 0; i < GLINT_DRI_BUF_COUNT; i++) {
- buf = dma->buflist[i];
- *pgt = virt_to_phys((void*)buf->address) | 0x07;
- pgt++;
- }
-
- buf = dma->buflist[GLINT_DRI_BUF_COUNT];
- } else {
- dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset);
- drm_core_ioremap( dev->agp_buffer_map, dev);
-
- buf = dma->buflist[GLINT_DRI_BUF_COUNT];
- pgt = buf->address;
-
- for (i = 0; i < GLINT_DRI_BUF_COUNT; i++) {
- buf = dma->buflist[i];
- *pgt = (unsigned long)buf->address + 0x07;
- pgt++;
- }
-
- buf = dma->buflist[GLINT_DRI_BUF_COUNT];
-
- while (GAMMA_READ(GAMMA_INFIFOSPACE) < 1);
- GAMMA_WRITE( GAMMA_GDMACONTROL, 0xe);
- }
- while (GAMMA_READ(GAMMA_INFIFOSPACE) < 2);
- GAMMA_WRITE( GAMMA_PAGETABLEADDR, virt_to_phys((void*)buf->address) );
- GAMMA_WRITE( GAMMA_PAGETABLELENGTH, 2 );
-
- return 0;
-}
-
-int gamma_do_cleanup_dma( drm_device_t *dev )
-{
- DRM_DEBUG( "%s\n", __FUNCTION__ );
-
- /* Make sure interrupts are disabled here because the uninstall ioctl
- * may not have been called from userspace and after dev_private
- * is freed, it's too late.
- */
- if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ))
- if ( dev->irq_enabled )
- DRM(irq_uninstall)(dev);
-
- if ( dev->dev_private ) {
-
- if ( dev->agp_buffer_map != NULL )
- drm_core_ioremapfree( dev->agp_buffer_map, dev );
-
- DRM(free)( dev->dev_private, sizeof(drm_gamma_private_t),
- DRM_MEM_DRIVER );
- dev->dev_private = NULL;
- }
-
- return 0;
-}
-
-int gamma_dma_init( 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_gamma_init_t init;
-
- LOCK_TEST_WITH_RETURN( dev, filp );
-
- if ( copy_from_user( &init, (drm_gamma_init_t __user *)arg, sizeof(init) ) )
- return -EFAULT;
-
- switch ( init.func ) {
- case GAMMA_INIT_DMA:
- return gamma_do_init_dma( dev, &init );
- case GAMMA_CLEANUP_DMA:
- return gamma_do_cleanup_dma( dev );
- }
-
- return -EINVAL;
-}
-
-static int gamma_do_copy_dma( drm_device_t *dev, drm_gamma_copy_t *copy )
-{
- drm_device_dma_t *dma = dev->dma;
- unsigned int *screenbuf;
-
- DRM_DEBUG( "%s\n", __FUNCTION__ );
-
- /* We've DRM_RESTRICTED this DMA buffer */
-
- screenbuf = dma->buflist[ GLINT_DRI_BUF_COUNT + 1 ]->address;
-
-#if 0
- *buffer++ = 0x180; /* Tag (FilterMode) */
- *buffer++ = 0x200; /* Allow FBColor through */
- *buffer++ = 0x53B; /* Tag */
- *buffer++ = copy->Pitch;
- *buffer++ = 0x53A; /* Tag */
- *buffer++ = copy->SrcAddress;
- *buffer++ = 0x539; /* Tag */
- *buffer++ = copy->WidthHeight; /* Initiates transfer */
- *buffer++ = 0x53C; /* Tag - DMAOutputAddress */
- *buffer++ = virt_to_phys((void*)screenbuf);
- *buffer++ = 0x53D; /* Tag - DMAOutputCount */
- *buffer++ = copy->Count; /* Reads HostOutFifo BLOCKS until ..*/
-
- /* Data now sitting in dma->buflist[ GLINT_DRI_BUF_COUNT + 1 ] */
- /* Now put it back to the screen */
-
- *buffer++ = 0x180; /* Tag (FilterMode) */
- *buffer++ = 0x400; /* Allow Sync through */
- *buffer++ = 0x538; /* Tag - DMARectangleReadTarget */
- *buffer++ = 0x155; /* FBSourceData | count */
- *buffer++ = 0x537; /* Tag */
- *buffer++ = copy->Pitch;
- *buffer++ = 0x536; /* Tag */
- *buffer++ = copy->DstAddress;
- *buffer++ = 0x535; /* Tag */
- *buffer++ = copy->WidthHeight; /* Initiates transfer */
- *buffer++ = 0x530; /* Tag - DMAAddr */
- *buffer++ = virt_to_phys((void*)screenbuf);
- *buffer++ = 0x531;
- *buffer++ = copy->Count; /* initiates DMA transfer of color data */
-#endif
-
- /* need to dispatch it now */
-
- return 0;
-}
-
-int gamma_dma_copy( 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_gamma_copy_t copy;
-
- if ( copy_from_user( &copy, (drm_gamma_copy_t __user *)arg, sizeof(copy) ) )
- return -EFAULT;
-
- return gamma_do_copy_dma( dev, &copy );
-}
-
-/* =============================================================
- * Per Context SAREA Support
- */
-
-int gamma_getsareactx(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_ctx_priv_map_t __user *argp = (void __user *)arg;
- drm_ctx_priv_map_t request;
- drm_map_t *map;
-
- if (copy_from_user(&request, argp, sizeof(request)))
- return -EFAULT;
-
- down(&dev->struct_sem);
- if ((int)request.ctx_id >= dev->max_context) {
- up(&dev->struct_sem);
- return -EINVAL;
- }
-
- map = dev->context_sareas[request.ctx_id];
- up(&dev->struct_sem);
-
- request.handle = map->handle;
- if (copy_to_user(argp, &request, sizeof(request)))
- return -EFAULT;
- return 0;
-}
-
-int gamma_setsareactx(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_ctx_priv_map_t request;
- drm_map_t *map = NULL;
- drm_map_list_t *r_list;
- struct list_head *list;
-
- if (copy_from_user(&request,
- (drm_ctx_priv_map_t __user *)arg,
- sizeof(request)))
- return -EFAULT;
-
- down(&dev->struct_sem);
- r_list = NULL;
- list_for_each(list, &dev->maplist->head) {
- r_list = list_entry(list, drm_map_list_t, head);
- if(r_list->map &&
- r_list->map->handle == request.handle) break;
- }
- if (list == &(dev->maplist->head)) {
- up(&dev->struct_sem);
- return -EINVAL;
- }
- map = r_list->map;
- up(&dev->struct_sem);
-
- if (!map) return -EINVAL;
-
- down(&dev->struct_sem);
- if ((int)request.ctx_id >= dev->max_context) {
- up(&dev->struct_sem);
- return -EINVAL;
- }
- dev->context_sareas[request.ctx_id] = map;
- up(&dev->struct_sem);
- return 0;
-}
-
-void gamma_driver_irq_preinstall( drm_device_t *dev ) {
- drm_gamma_private_t *dev_priv =
- (drm_gamma_private_t *)dev->dev_private;
-
- while(GAMMA_READ(GAMMA_INFIFOSPACE) < 2)
- cpu_relax();
-
- GAMMA_WRITE( GAMMA_GCOMMANDMODE, 0x00000004 );
- GAMMA_WRITE( GAMMA_GDMACONTROL, 0x00000000 );
-}
-
-void gamma_driver_irq_postinstall( drm_device_t *dev ) {
- drm_gamma_private_t *dev_priv =
- (drm_gamma_private_t *)dev->dev_private;
-
- while(GAMMA_READ(GAMMA_INFIFOSPACE) < 3)
- cpu_relax();
-
- GAMMA_WRITE( GAMMA_GINTENABLE, 0x00002001 );
- GAMMA_WRITE( GAMMA_COMMANDINTENABLE, 0x00000008 );
- GAMMA_WRITE( GAMMA_GDELAYTIMER, 0x00039090 );
-}
-
-void gamma_driver_irq_uninstall( drm_device_t *dev ) {
- drm_gamma_private_t *dev_priv =
- (drm_gamma_private_t *)dev->dev_private;
- if (!dev_priv)
- return;
-
- while(GAMMA_READ(GAMMA_INFIFOSPACE) < 3)
- cpu_relax();
-
- GAMMA_WRITE( GAMMA_GDELAYTIMER, 0x00000000 );
- GAMMA_WRITE( GAMMA_COMMANDINTENABLE, 0x00000000 );
- GAMMA_WRITE( GAMMA_GINTENABLE, 0x00000000 );
-}
-
-extern drm_ioctl_desc_t DRM(ioctls)[];
-
-static int gamma_driver_preinit(drm_device_t *dev)
-{
- /* reset the finish ioctl */
- DRM(ioctls)[DRM_IOCTL_NR(DRM_IOCTL_FINISH)].func = DRM(finish);
- return 0;
-}
-
-static void gamma_driver_pretakedown(drm_device_t *dev)
-{
- gamma_do_cleanup_dma(dev);
-}
-
-static void gamma_driver_dma_ready(drm_device_t *dev)
-{
- gamma_dma_ready(dev);
-}
-
-static int gamma_driver_dma_quiescent(drm_device_t *dev)
-{
- drm_gamma_private_t *dev_priv = (
- drm_gamma_private_t *)dev->dev_private;
- if (dev_priv->num_rast == 2)
- gamma_dma_quiescent_dual(dev);
- else gamma_dma_quiescent_single(dev);
- return 0;
-}
-
-void gamma_driver_register_fns(drm_device_t *dev)
-{
- dev->driver_features = DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_PCI_DMA | DRIVER_HAVE_DMA | DRIVER_HAVE_IRQ;
- DRM(fops).read = gamma_fops_read;
- DRM(fops).poll = gamma_fops_poll;
- dev->driver.preinit = gamma_driver_preinit;
- dev->driver.pretakedown = gamma_driver_pretakedown;
- dev->driver.dma_ready = gamma_driver_dma_ready;
- dev->driver.dma_quiescent = gamma_driver_dma_quiescent;
- dev->driver.dma_flush_block_and_flush = gamma_flush_block_and_flush;
- dev->driver.dma_flush_unblock = gamma_flush_unblock;
-}
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