diff options
author | Adam Jackson <ajax@theobromine.nwnk.net> | 2006-07-19 16:19:25 -0400 |
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committer | Adam Jackson <ajax@theobromine.nwnk.net> | 2006-07-19 16:19:25 -0400 |
commit | 6677e2a10b820a5ccfd375cc627b8e41453a71da (patch) | |
tree | 2f7f388e3450f644d84f2ef4c083314aeb57e886 /shared/mga_dma.c | |
parent | af7b89d7246efbed7d05c38fcaa6a13c4b89db90 (diff) |
Delete the pre-core DRM code with extreme prejudice.
Diffstat (limited to 'shared/mga_dma.c')
-rw-r--r-- | shared/mga_dma.c | 829 |
1 files changed, 0 insertions, 829 deletions
diff --git a/shared/mga_dma.c b/shared/mga_dma.c deleted file mode 100644 index 0288f1c2..00000000 --- a/shared/mga_dma.c +++ /dev/null @@ -1,829 +0,0 @@ -/* mga_dma.c -- DMA support for mga g200/g400 -*- linux-c -*- - * Created: Mon Dec 13 01:50:01 1999 by jhartmann@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> - * Jeff Hartmann <jhartmann@valinux.com> - * Keith Whitwell <keith@tungstengraphics.com> - * - * Rewritten by: - * Gareth Hughes <gareth@valinux.com> - */ - -#include "mga.h" -#include "drmP.h" -#include "drm.h" -#include "mga_drm.h" -#include "mga_drv.h" - -#define MGA_DEFAULT_USEC_TIMEOUT 10000 -#define MGA_FREELIST_DEBUG 0 - - -/* ================================================================ - * Engine control - */ - -int mga_do_wait_for_idle( drm_mga_private_t *dev_priv ) -{ - u32 status = 0; - int i; - DRM_DEBUG( "\n" ); - - for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) { - status = MGA_READ( MGA_STATUS ) & MGA_ENGINE_IDLE_MASK; - if ( status == MGA_ENDPRDMASTS ) { - MGA_WRITE8( MGA_CRTC_INDEX, 0 ); - return 0; - } - DRM_UDELAY( 1 ); - } - -#if MGA_DMA_DEBUG - DRM_ERROR( "failed!\n" ); - DRM_INFO( " status=0x%08x\n", status ); -#endif - return DRM_ERR(EBUSY); -} - -int mga_do_dma_idle( drm_mga_private_t *dev_priv ) -{ - u32 status = 0; - int i; - DRM_DEBUG( "\n" ); - - for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) { - status = MGA_READ( MGA_STATUS ) & MGA_DMA_IDLE_MASK; - if ( status == MGA_ENDPRDMASTS ) return 0; - DRM_UDELAY( 1 ); - } - -#if MGA_DMA_DEBUG - DRM_ERROR( "failed! status=0x%08x\n", status ); -#endif - return DRM_ERR(EBUSY); -} - -int mga_do_dma_reset( drm_mga_private_t *dev_priv ) -{ - drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv; - drm_mga_primary_buffer_t *primary = &dev_priv->prim; - - DRM_DEBUG( "\n" ); - - /* The primary DMA stream should look like new right about now. - */ - primary->tail = 0; - primary->space = primary->size; - primary->last_flush = 0; - - sarea_priv->last_wrap = 0; - - /* FIXME: Reset counters, buffer ages etc... - */ - - /* FIXME: What else do we need to reinitialize? WARP stuff? - */ - - return 0; -} - -int mga_do_engine_reset( drm_mga_private_t *dev_priv ) -{ - DRM_DEBUG( "\n" ); - - /* Okay, so we've completely screwed up and locked the engine. - * How about we clean up after ourselves? - */ - MGA_WRITE( MGA_RST, MGA_SOFTRESET ); - DRM_UDELAY( 15 ); /* Wait at least 10 usecs */ - MGA_WRITE( MGA_RST, 0 ); - - /* Initialize the registers that get clobbered by the soft - * reset. Many of the core register values survive a reset, - * but the drawing registers are basically all gone. - * - * 3D clients should probably die after calling this. The X - * server should reset the engine state to known values. - */ -#if 0 - MGA_WRITE( MGA_PRIMPTR, - virt_to_bus((void *)dev_priv->prim.status_page) | - MGA_PRIMPTREN0 | - MGA_PRIMPTREN1 ); -#endif - - MGA_WRITE( MGA_ICLEAR, MGA_SOFTRAPICLR ); - MGA_WRITE( MGA_IEN, MGA_SOFTRAPIEN ); - - /* The primary DMA stream should look like new right about now. - */ - mga_do_dma_reset( dev_priv ); - - /* This bad boy will never fail. - */ - return 0; -} - - -/* ================================================================ - * Primary DMA stream - */ - -void mga_do_dma_flush( drm_mga_private_t *dev_priv ) -{ - drm_mga_primary_buffer_t *primary = &dev_priv->prim; - u32 head, tail; - u32 status = 0; - int i; - DMA_LOCALS; - DRM_DEBUG( "\n" ); - - /* We need to wait so that we can do an safe flush */ - for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) { - status = MGA_READ( MGA_STATUS ) & MGA_ENGINE_IDLE_MASK; - if ( status == MGA_ENDPRDMASTS ) break; - DRM_UDELAY( 1 ); - } - - if ( primary->tail == primary->last_flush ) { - DRM_DEBUG( " bailing out...\n" ); - return; - } - - tail = primary->tail + dev_priv->primary->offset; - - /* We need to pad the stream between flushes, as the card - * actually (partially?) reads the first of these commands. - * See page 4-16 in the G400 manual, middle of the page or so. - */ - BEGIN_DMA( 1 ); - - DMA_BLOCK( MGA_DMAPAD, 0x00000000, - MGA_DMAPAD, 0x00000000, - MGA_DMAPAD, 0x00000000, - MGA_DMAPAD, 0x00000000 ); - - ADVANCE_DMA(); - - primary->last_flush = primary->tail; - - head = MGA_READ( MGA_PRIMADDRESS ); - - if ( head <= tail ) { - primary->space = primary->size - primary->tail; - } else { - primary->space = head - tail; - } - - DRM_DEBUG( " head = 0x%06lx\n", head - dev_priv->primary->offset ); - DRM_DEBUG( " tail = 0x%06lx\n", tail - dev_priv->primary->offset ); - DRM_DEBUG( " space = 0x%06x\n", primary->space ); - - mga_flush_write_combine(); - MGA_WRITE( MGA_PRIMEND, tail | MGA_PAGPXFER ); - - DRM_DEBUG( "done.\n" ); -} - -void mga_do_dma_wrap_start( drm_mga_private_t *dev_priv ) -{ - drm_mga_primary_buffer_t *primary = &dev_priv->prim; - u32 head, tail; - DMA_LOCALS; - DRM_DEBUG( "\n" ); - - BEGIN_DMA_WRAP(); - - DMA_BLOCK( MGA_DMAPAD, 0x00000000, - MGA_DMAPAD, 0x00000000, - MGA_DMAPAD, 0x00000000, - MGA_DMAPAD, 0x00000000 ); - - ADVANCE_DMA(); - - tail = primary->tail + dev_priv->primary->offset; - - primary->tail = 0; - primary->last_flush = 0; - primary->last_wrap++; - - head = MGA_READ( MGA_PRIMADDRESS ); - - if ( head == dev_priv->primary->offset ) { - primary->space = primary->size; - } else { - primary->space = head - dev_priv->primary->offset; - } - - DRM_DEBUG( " head = 0x%06lx\n", - head - dev_priv->primary->offset ); - DRM_DEBUG( " tail = 0x%06x\n", primary->tail ); - DRM_DEBUG( " wrap = %d\n", primary->last_wrap ); - DRM_DEBUG( " space = 0x%06x\n", primary->space ); - - mga_flush_write_combine(); - MGA_WRITE( MGA_PRIMEND, tail | MGA_PAGPXFER ); - - set_bit( 0, &primary->wrapped ); - DRM_DEBUG( "done.\n" ); -} - -void mga_do_dma_wrap_end( drm_mga_private_t *dev_priv ) -{ - drm_mga_primary_buffer_t *primary = &dev_priv->prim; - drm_mga_sarea_t *sarea_priv = dev_priv->sarea_priv; - u32 head = dev_priv->primary->offset; - DRM_DEBUG( "\n" ); - - sarea_priv->last_wrap++; - DRM_DEBUG( " wrap = %d\n", sarea_priv->last_wrap ); - - mga_flush_write_combine(); - MGA_WRITE( MGA_PRIMADDRESS, head | MGA_DMA_GENERAL ); - - clear_bit( 0, &primary->wrapped ); - DRM_DEBUG( "done.\n" ); -} - - -/* ================================================================ - * Freelist management - */ - -#define MGA_BUFFER_USED ~0 -#define MGA_BUFFER_FREE 0 - -#if MGA_FREELIST_DEBUG -static void mga_freelist_print( drm_device_t *dev ) -{ - drm_mga_private_t *dev_priv = dev->dev_private; - drm_mga_freelist_t *entry; - - DRM_INFO( "\n" ); - DRM_INFO( "current dispatch: last=0x%x done=0x%x\n", - dev_priv->sarea_priv->last_dispatch, - (unsigned int)(MGA_READ( MGA_PRIMADDRESS ) - - dev_priv->primary->offset) ); - DRM_INFO( "current freelist:\n" ); - - for ( entry = dev_priv->head->next ; entry ; entry = entry->next ) { - DRM_INFO( " %p idx=%2d age=0x%x 0x%06lx\n", - entry, entry->buf->idx, entry->age.head, - entry->age.head - dev_priv->primary->offset ); - } - DRM_INFO( "\n" ); -} -#endif - -static int mga_freelist_init( drm_device_t *dev, drm_mga_private_t *dev_priv ) -{ - drm_device_dma_t *dma = dev->dma; - drm_buf_t *buf; - drm_mga_buf_priv_t *buf_priv; - drm_mga_freelist_t *entry; - int i; - DRM_DEBUG( "count=%d\n", dma->buf_count ); - - dev_priv->head = DRM(alloc)( sizeof(drm_mga_freelist_t), - DRM_MEM_DRIVER ); - if ( dev_priv->head == NULL ) - return DRM_ERR(ENOMEM); - - memset( dev_priv->head, 0, sizeof(drm_mga_freelist_t) ); - SET_AGE( &dev_priv->head->age, MGA_BUFFER_USED, 0 ); - - for ( i = 0 ; i < dma->buf_count ; i++ ) { - buf = dma->buflist[i]; - buf_priv = buf->dev_private; - - entry = DRM(alloc)( sizeof(drm_mga_freelist_t), - DRM_MEM_DRIVER ); - if ( entry == NULL ) - return DRM_ERR(ENOMEM); - - memset( entry, 0, sizeof(drm_mga_freelist_t) ); - - entry->next = dev_priv->head->next; - entry->prev = dev_priv->head; - SET_AGE( &entry->age, MGA_BUFFER_FREE, 0 ); - entry->buf = buf; - - if ( dev_priv->head->next != NULL ) - dev_priv->head->next->prev = entry; - if ( entry->next == NULL ) - dev_priv->tail = entry; - - buf_priv->list_entry = entry; - buf_priv->discard = 0; - buf_priv->dispatched = 0; - - dev_priv->head->next = entry; - } - - return 0; -} - -static void mga_freelist_cleanup( drm_device_t *dev ) -{ - drm_mga_private_t *dev_priv = dev->dev_private; - drm_mga_freelist_t *entry; - drm_mga_freelist_t *next; - DRM_DEBUG( "\n" ); - - entry = dev_priv->head; - while ( entry ) { - next = entry->next; - DRM(free)( entry, sizeof(drm_mga_freelist_t), DRM_MEM_DRIVER ); - entry = next; - } - - dev_priv->head = dev_priv->tail = NULL; -} - -#if 0 -/* FIXME: Still needed? - */ -static void mga_freelist_reset( drm_device_t *dev ) -{ - drm_device_dma_t *dma = dev->dma; - drm_buf_t *buf; - drm_mga_buf_priv_t *buf_priv; - int i; - - for ( i = 0 ; i < dma->buf_count ; i++ ) { - buf = dma->buflist[i]; - buf_priv = buf->dev_private; - SET_AGE( &buf_priv->list_entry->age, - MGA_BUFFER_FREE, 0 ); - } -} -#endif - -static drm_buf_t *mga_freelist_get( drm_device_t *dev ) -{ - drm_mga_private_t *dev_priv = dev->dev_private; - drm_mga_freelist_t *next; - drm_mga_freelist_t *prev; - drm_mga_freelist_t *tail = dev_priv->tail; - u32 head, wrap; - DRM_DEBUG( "\n" ); - - head = MGA_READ( MGA_PRIMADDRESS ); - wrap = dev_priv->sarea_priv->last_wrap; - - DRM_DEBUG( " tail=0x%06lx %d\n", - tail->age.head ? - tail->age.head - dev_priv->primary->offset : 0, - tail->age.wrap ); - DRM_DEBUG( " head=0x%06lx %d\n", - head - dev_priv->primary->offset, wrap ); - - if ( TEST_AGE( &tail->age, head, wrap ) ) { - prev = dev_priv->tail->prev; - next = dev_priv->tail; - prev->next = NULL; - next->prev = next->next = NULL; - dev_priv->tail = prev; - SET_AGE( &next->age, MGA_BUFFER_USED, 0 ); - return next->buf; - } - - DRM_DEBUG( "returning NULL!\n" ); - return NULL; -} - -int mga_freelist_put( drm_device_t *dev, drm_buf_t *buf ) -{ - drm_mga_private_t *dev_priv = dev->dev_private; - drm_mga_buf_priv_t *buf_priv = buf->dev_private; - drm_mga_freelist_t *head, *entry, *prev; - - DRM_DEBUG( "age=0x%06lx wrap=%d\n", - buf_priv->list_entry->age.head - - dev_priv->primary->offset, - buf_priv->list_entry->age.wrap ); - - entry = buf_priv->list_entry; - head = dev_priv->head; - - if ( buf_priv->list_entry->age.head == MGA_BUFFER_USED ) { - SET_AGE( &entry->age, MGA_BUFFER_FREE, 0 ); - prev = dev_priv->tail; - prev->next = entry; - entry->prev = prev; - entry->next = NULL; - } else { - prev = head->next; - head->next = entry; - prev->prev = entry; - entry->prev = head; - entry->next = prev; - } - - return 0; -} - - -/* ================================================================ - * DMA initialization, cleanup - */ - -static int mga_do_init_dma( drm_device_t *dev, drm_mga_init_t *init ) -{ - drm_mga_private_t *dev_priv; - int ret; - DRM_DEBUG( "\n" ); - - dev_priv = DRM(alloc)( sizeof(drm_mga_private_t), DRM_MEM_DRIVER ); - if ( !dev_priv ) - return DRM_ERR(ENOMEM); - - memset( dev_priv, 0, sizeof(drm_mga_private_t) ); - - dev_priv->chipset = init->chipset; - - dev_priv->usec_timeout = MGA_DEFAULT_USEC_TIMEOUT; - - if ( init->sgram ) { - dev_priv->clear_cmd = MGA_DWGCTL_CLEAR | MGA_ATYPE_BLK; - } else { - dev_priv->clear_cmd = MGA_DWGCTL_CLEAR | MGA_ATYPE_RSTR; - } - dev_priv->maccess = init->maccess; - - dev_priv->fb_cpp = init->fb_cpp; - dev_priv->front_offset = init->front_offset; - dev_priv->front_pitch = init->front_pitch; - dev_priv->back_offset = init->back_offset; - dev_priv->back_pitch = init->back_pitch; - - dev_priv->depth_cpp = init->depth_cpp; - dev_priv->depth_offset = init->depth_offset; - dev_priv->depth_pitch = init->depth_pitch; - - /* FIXME: Need to support AGP textures... - */ - dev_priv->texture_offset = init->texture_offset[0]; - dev_priv->texture_size = init->texture_size[0]; - - DRM_GETSAREA(); - - if(!dev_priv->sarea) { - DRM_ERROR( "failed to find sarea!\n" ); - /* Assign dev_private so we can do cleanup. */ - dev->dev_private = (void *)dev_priv; - mga_do_cleanup_dma( dev ); - return DRM_ERR(EINVAL); - } - - dev_priv->mmio = drm_core_findmap(dev, init->mmio_offset); - if(!dev_priv->mmio) { - DRM_ERROR( "failed to find mmio region!\n" ); - /* Assign dev_private so we can do cleanup. */ - dev->dev_private = (void *)dev_priv; - mga_do_cleanup_dma( dev ); - return DRM_ERR(EINVAL); - } - dev_priv->status = drm_core_findmap(dev, init->status_offset); - if(!dev_priv->status) { - DRM_ERROR( "failed to find status page!\n" ); - /* Assign dev_private so we can do cleanup. */ - dev->dev_private = (void *)dev_priv; - mga_do_cleanup_dma( dev ); - return DRM_ERR(EINVAL); - } - dev_priv->warp = drm_core_findmap(dev, init->warp_offset); - if(!dev_priv->warp) { - DRM_ERROR( "failed to find warp microcode region!\n" ); - /* Assign dev_private so we can do cleanup. */ - dev->dev_private = (void *)dev_priv; - mga_do_cleanup_dma( dev ); - return DRM_ERR(EINVAL); - } - dev_priv->primary = drm_core_findmap(dev, init->primary_offset); - if(!dev_priv->primary) { - DRM_ERROR( "failed to find primary dma region!\n" ); - /* Assign dev_private so we can do cleanup. */ - dev->dev_private = (void *)dev_priv; - mga_do_cleanup_dma( dev ); - return DRM_ERR(EINVAL); - } - dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset); - if(!dev->agp_buffer_map) { - DRM_ERROR( "failed to find dma buffer region!\n" ); - /* Assign dev_private so we can do cleanup. */ - dev->dev_private = (void *)dev_priv; - mga_do_cleanup_dma( dev ); - return DRM_ERR(EINVAL); - } - - dev_priv->sarea_priv = - (drm_mga_sarea_t *)((u8 *)dev_priv->sarea->handle + - init->sarea_priv_offset); - - drm_core_ioremap( dev_priv->warp, dev ); - drm_core_ioremap( dev_priv->primary, dev ); - drm_core_ioremap( dev->agp_buffer_map, dev ); - - if(!dev_priv->warp->handle || - !dev_priv->primary->handle || - !dev->agp_buffer_map->handle ) { - DRM_ERROR( "failed to ioremap agp regions!\n" ); - /* Assign dev_private so we can do cleanup. */ - dev->dev_private = (void *)dev_priv; - mga_do_cleanup_dma( dev ); - return DRM_ERR(ENOMEM); - } - - ret = mga_warp_install_microcode( dev_priv ); - if ( ret < 0 ) { - DRM_ERROR( "failed to install WARP ucode!\n" ); - /* Assign dev_private so we can do cleanup. */ - dev->dev_private = (void *)dev_priv; - mga_do_cleanup_dma( dev ); - return ret; - } - - ret = mga_warp_init( dev_priv ); - if ( ret < 0 ) { - DRM_ERROR( "failed to init WARP engine!\n" ); - /* Assign dev_private so we can do cleanup. */ - dev->dev_private = (void *)dev_priv; - mga_do_cleanup_dma( dev ); - return ret; - } - - dev_priv->prim.status = (u32 *)dev_priv->status->handle; - - mga_do_wait_for_idle( dev_priv ); - - /* Init the primary DMA registers. - */ - MGA_WRITE( MGA_PRIMADDRESS, - dev_priv->primary->offset | MGA_DMA_GENERAL ); -#if 0 - MGA_WRITE( MGA_PRIMPTR, - virt_to_bus((void *)dev_priv->prim.status) | - MGA_PRIMPTREN0 | /* Soft trap, SECEND, SETUPEND */ - MGA_PRIMPTREN1 ); /* DWGSYNC */ -#endif - - dev_priv->prim.start = (u8 *)dev_priv->primary->handle; - dev_priv->prim.end = ((u8 *)dev_priv->primary->handle - + dev_priv->primary->size); - dev_priv->prim.size = dev_priv->primary->size; - - dev_priv->prim.tail = 0; - dev_priv->prim.space = dev_priv->prim.size; - dev_priv->prim.wrapped = 0; - - dev_priv->prim.last_flush = 0; - dev_priv->prim.last_wrap = 0; - - dev_priv->prim.high_mark = 256 * DMA_BLOCK_SIZE; - - dev_priv->prim.status[0] = dev_priv->primary->offset; - dev_priv->prim.status[1] = 0; - - dev_priv->sarea_priv->last_wrap = 0; - dev_priv->sarea_priv->last_frame.head = 0; - dev_priv->sarea_priv->last_frame.wrap = 0; - - if ( mga_freelist_init( dev, dev_priv ) < 0 ) { - DRM_ERROR( "could not initialize freelist\n" ); - /* Assign dev_private so we can do cleanup. */ - dev->dev_private = (void *)dev_priv; - mga_do_cleanup_dma( dev ); - return DRM_ERR(ENOMEM); - } - - /* Make dev_private visable to others. */ - dev->dev_private = (void *)dev_priv; - return 0; -} - -int mga_do_cleanup_dma( drm_device_t *dev ) -{ - DRM_DEBUG( "\n" ); - - /* 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 ( dev->irq_enabled ) DRM(irq_uninstall)(dev); - - if ( dev->dev_private ) { - drm_mga_private_t *dev_priv = dev->dev_private; - - if ( dev_priv->warp != NULL ) - drm_core_ioremapfree( dev_priv->warp, dev ); - if ( dev_priv->primary != NULL ) - drm_core_ioremapfree( dev_priv->primary, dev ); - if ( dev->agp_buffer_map != NULL ) { - drm_core_ioremapfree( dev->agp_buffer_map, dev ); - dev->agp_buffer_map = NULL; - } - - if ( dev_priv->head != NULL ) { - mga_freelist_cleanup( dev ); - } - - DRM(free)( dev->dev_private, sizeof(drm_mga_private_t), - DRM_MEM_DRIVER ); - dev->dev_private = NULL; - } - - return 0; -} - -int mga_dma_init( DRM_IOCTL_ARGS ) -{ - DRM_DEVICE; - drm_mga_init_t init; - - LOCK_TEST_WITH_RETURN( dev, filp ); - - DRM_COPY_FROM_USER_IOCTL( init, (drm_mga_init_t __user *)data, sizeof(init) ); - - switch ( init.func ) { - case MGA_INIT_DMA: - return mga_do_init_dma( dev, &init ); - case MGA_CLEANUP_DMA: - return mga_do_cleanup_dma( dev ); - } - - return DRM_ERR(EINVAL); -} - - -/* ================================================================ - * Primary DMA stream management - */ - -int mga_dma_flush( DRM_IOCTL_ARGS ) -{ - DRM_DEVICE; - drm_mga_private_t *dev_priv = (drm_mga_private_t *)dev->dev_private; - drm_lock_t lock; - - LOCK_TEST_WITH_RETURN( dev, filp ); - - DRM_COPY_FROM_USER_IOCTL( lock, (drm_lock_t __user *)data, sizeof(lock) ); - - DRM_DEBUG( "%s%s%s\n", - (lock.flags & _DRM_LOCK_FLUSH) ? "flush, " : "", - (lock.flags & _DRM_LOCK_FLUSH_ALL) ? "flush all, " : "", - (lock.flags & _DRM_LOCK_QUIESCENT) ? "idle, " : "" ); - - WRAP_WAIT_WITH_RETURN( dev_priv ); - - if ( lock.flags & (_DRM_LOCK_FLUSH | _DRM_LOCK_FLUSH_ALL) ) { - mga_do_dma_flush( dev_priv ); - } - - if ( lock.flags & _DRM_LOCK_QUIESCENT ) { -#if MGA_DMA_DEBUG - int ret = mga_do_wait_for_idle( dev_priv ); - if ( ret < 0 ) - DRM_INFO( "%s: -EBUSY\n", __FUNCTION__ ); - return ret; -#else - return mga_do_wait_for_idle( dev_priv ); -#endif - } else { - return 0; - } -} - -int mga_dma_reset( DRM_IOCTL_ARGS ) -{ - DRM_DEVICE; - drm_mga_private_t *dev_priv = (drm_mga_private_t *)dev->dev_private; - - LOCK_TEST_WITH_RETURN( dev, filp ); - - return mga_do_dma_reset( dev_priv ); -} - - -/* ================================================================ - * DMA buffer management - */ - -static int mga_dma_get_buffers( DRMFILE filp, - drm_device_t *dev, drm_dma_t *d ) -{ - drm_buf_t *buf; - int i; - - for ( i = d->granted_count ; i < d->request_count ; i++ ) { - buf = mga_freelist_get( dev ); - if ( !buf ) return DRM_ERR(EAGAIN); - - buf->filp = filp; - - if ( DRM_COPY_TO_USER( &d->request_indices[i], - &buf->idx, sizeof(buf->idx) ) ) - return DRM_ERR(EFAULT); - if ( DRM_COPY_TO_USER( &d->request_sizes[i], - &buf->total, sizeof(buf->total) ) ) - return DRM_ERR(EFAULT); - - d->granted_count++; - } - return 0; -} - -int mga_dma_buffers( DRM_IOCTL_ARGS ) -{ - DRM_DEVICE; - drm_device_dma_t *dma = dev->dma; - drm_mga_private_t *dev_priv = (drm_mga_private_t *)dev->dev_private; - drm_dma_t __user *argp = (void __user *)data; - drm_dma_t d; - int ret = 0; - - LOCK_TEST_WITH_RETURN( dev, filp ); - - DRM_COPY_FROM_USER_IOCTL( d, argp, sizeof(d) ); - - /* Please don't send us buffers. - */ - if ( d.send_count != 0 ) { - DRM_ERROR( "Process %d trying to send %d buffers via drmDMA\n", - DRM_CURRENTPID, d.send_count ); - return DRM_ERR(EINVAL); - } - - /* We'll send you buffers. - */ - if ( d.request_count < 0 || d.request_count > dma->buf_count ) { - DRM_ERROR( "Process %d trying to get %d buffers (of %d max)\n", - DRM_CURRENTPID, d.request_count, dma->buf_count ); - return DRM_ERR(EINVAL); - } - - WRAP_TEST_WITH_RETURN( dev_priv ); - - d.granted_count = 0; - - if ( d.request_count ) { - ret = mga_dma_get_buffers( filp, dev, &d ); - } - - DRM_COPY_TO_USER_IOCTL( argp, d, sizeof(d) ); - - return ret; -} - -static void mga_driver_pretakedown(drm_device_t *dev) -{ - mga_do_cleanup_dma( dev ); -} - -static int mga_driver_dma_quiescent(drm_device_t *dev) -{ - drm_mga_private_t *dev_priv = dev->dev_private; - return mga_do_wait_for_idle( dev_priv ); -} - -void mga_driver_register_fns(drm_device_t *dev) -{ - dev->driver_features = DRIVER_USE_AGP | DRIVER_REQUIRE_AGP | DRIVER_USE_MTRR | DRIVER_HAVE_DMA | DRIVER_HAVE_IRQ | DRIVER_IRQ_SHARED | DRIVER_IRQ_VBL; - dev->fn_tbl.pretakedown = mga_driver_pretakedown; - dev->fn_tbl.dma_quiescent = mga_driver_dma_quiescent; - dev->fn_tbl.vblank_wait = mga_driver_vblank_wait; - dev->fn_tbl.irq_preinstall = mga_driver_irq_preinstall; - dev->fn_tbl.irq_postinstall = mga_driver_irq_postinstall; - dev->fn_tbl.irq_uninstall = mga_driver_irq_uninstall; - dev->fn_tbl.irq_handler = mga_driver_irq_handler; - - dev->counters += 3; - dev->types[6] = _DRM_STAT_IRQ; - dev->types[7] = _DRM_STAT_PRIMARY; - dev->types[8] = _DRM_STAT_SECONDARY; -} |