diff options
Diffstat (limited to 'drivers/char/drm/gamma_dma.c')
| -rw-r--r-- | drivers/char/drm/gamma_dma.c | 946 |
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( ©, (drm_gamma_copy_t __user *)arg, sizeof(copy) ) ) - return -EFAULT; - - return gamma_do_copy_dma( dev, © ); -} - -/* ============================================================= - * 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; -} |
