diff options
Diffstat (limited to 'drivers/char/drm/mga_dma.c')
| -rw-r--r-- | drivers/char/drm/mga_dma.c | 602 |
1 files changed, 494 insertions, 108 deletions
diff --git a/drivers/char/drm/mga_dma.c b/drivers/char/drm/mga_dma.c index 832eaf8a5068..567b425b784f 100644 --- a/drivers/char/drm/mga_dma.c +++ b/drivers/char/drm/mga_dma.c @@ -23,18 +23,21 @@ * 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> + */ + +/** + * \file mga_dma.c + * DMA support for MGA G200 / G400. + * + * \author Rickard E. (Rik) Faith <faith@valinux.com> + * \author Jeff Hartmann <jhartmann@valinux.com> + * \author Keith Whitwell <keith@tungstengraphics.com> + * \author Gareth Hughes <gareth@valinux.com> */ #include "drmP.h" #include "drm.h" +#include "drm_sarea.h" #include "mga_drm.h" #include "mga_drv.h" @@ -148,7 +151,7 @@ void mga_do_dma_flush( drm_mga_private_t *dev_priv ) DRM_DEBUG( " space = 0x%06x\n", primary->space ); mga_flush_write_combine(); - MGA_WRITE( MGA_PRIMEND, tail | MGA_PAGPXFER ); + MGA_WRITE(MGA_PRIMEND, tail | dev_priv->dma_access); DRM_DEBUG( "done.\n" ); } @@ -190,7 +193,7 @@ void mga_do_dma_wrap_start( drm_mga_private_t *dev_priv ) DRM_DEBUG( " space = 0x%06x\n", primary->space ); mga_flush_write_combine(); - MGA_WRITE( MGA_PRIMEND, tail | MGA_PAGPXFER ); + MGA_WRITE(MGA_PRIMEND, tail | dev_priv->dma_access); set_bit( 0, &primary->wrapped ); DRM_DEBUG( "done.\n" ); @@ -396,23 +399,383 @@ int mga_freelist_put( drm_device_t *dev, drm_buf_t *buf ) * DMA initialization, cleanup */ + +int mga_driver_preinit(drm_device_t *dev, unsigned long flags) +{ + drm_mga_private_t * dev_priv; + + dev_priv = drm_alloc(sizeof(drm_mga_private_t), DRM_MEM_DRIVER); + if (!dev_priv) + return DRM_ERR(ENOMEM); + + dev->dev_private = (void *)dev_priv; + memset(dev_priv, 0, sizeof(drm_mga_private_t)); + + dev_priv->usec_timeout = MGA_DEFAULT_USEC_TIMEOUT; + dev_priv->chipset = flags; + + return 0; +} + +/** + * Bootstrap the driver for AGP DMA. + * + * \todo + * Investigate whether there is any benifit to storing the WARP microcode in + * AGP memory. If not, the microcode may as well always be put in PCI + * memory. + * + * \todo + * This routine needs to set dma_bs->agp_mode to the mode actually configured + * in the hardware. Looking just at the Linux AGP driver code, I don't see + * an easy way to determine this. + * + * \sa mga_do_dma_bootstrap, mga_do_pci_dma_bootstrap + */ +static int mga_do_agp_dma_bootstrap(drm_device_t * dev, + drm_mga_dma_bootstrap_t * dma_bs) +{ + drm_mga_private_t * const dev_priv = (drm_mga_private_t *) dev->dev_private; + const unsigned int warp_size = mga_warp_microcode_size(dev_priv); + int err; + unsigned offset; + const unsigned secondary_size = dma_bs->secondary_bin_count + * dma_bs->secondary_bin_size; + const unsigned agp_size = (dma_bs->agp_size << 20); + drm_buf_desc_t req; + drm_agp_mode_t mode; + drm_agp_info_t info; + + + /* Acquire AGP. */ + err = drm_agp_acquire(dev); + if (err) { + DRM_ERROR("Unable to acquire AGP\n"); + return err; + } + + err = drm_agp_info(dev, &info); + if (err) { + DRM_ERROR("Unable to get AGP info\n"); + return err; + } + + mode.mode = (info.mode & ~0x07) | dma_bs->agp_mode; + err = drm_agp_enable(dev, mode); + if (err) { + DRM_ERROR("Unable to enable AGP (mode = 0x%lx)\n", mode.mode); + return err; + } + + + /* In addition to the usual AGP mode configuration, the G200 AGP cards + * need to have the AGP mode "manually" set. + */ + + if (dev_priv->chipset == MGA_CARD_TYPE_G200) { + if (mode.mode & 0x02) { + MGA_WRITE(MGA_AGP_PLL, MGA_AGP2XPLL_ENABLE); + } + else { + MGA_WRITE(MGA_AGP_PLL, MGA_AGP2XPLL_DISABLE); + } + } + + + /* Allocate and bind AGP memory. */ + dev_priv->agp_pages = agp_size / PAGE_SIZE; + dev_priv->agp_mem = drm_alloc_agp( dev, dev_priv->agp_pages, 0 ); + if (dev_priv->agp_mem == NULL) { + dev_priv->agp_pages = 0; + DRM_ERROR("Unable to allocate %uMB AGP memory\n", + dma_bs->agp_size); + return DRM_ERR(ENOMEM); + } + + err = drm_bind_agp( dev_priv->agp_mem, 0 ); + if (err) { + DRM_ERROR("Unable to bind AGP memory\n"); + return err; + } + + offset = 0; + err = drm_addmap( dev, offset, warp_size, + _DRM_AGP, _DRM_READ_ONLY, & dev_priv->warp ); + if (err) { + DRM_ERROR("Unable to map WARP microcode\n"); + return err; + } + + offset += warp_size; + err = drm_addmap( dev, offset, dma_bs->primary_size, + _DRM_AGP, _DRM_READ_ONLY, & dev_priv->primary ); + if (err) { + DRM_ERROR("Unable to map primary DMA region\n"); + return err; + } + + offset += dma_bs->primary_size; + err = drm_addmap( dev, offset, secondary_size, + _DRM_AGP, 0, & dev->agp_buffer_map ); + if (err) { + DRM_ERROR("Unable to map secondary DMA region\n"); + return err; + } + + (void) memset( &req, 0, sizeof(req) ); + req.count = dma_bs->secondary_bin_count; + req.size = dma_bs->secondary_bin_size; + req.flags = _DRM_AGP_BUFFER; + req.agp_start = offset; + + err = drm_addbufs_agp( dev, & req ); + if (err) { + DRM_ERROR("Unable to add secondary DMA buffers\n"); + return err; + } + + offset += secondary_size; + err = drm_addmap( dev, offset, agp_size - offset, + _DRM_AGP, 0, & dev_priv->agp_textures ); + if (err) { + DRM_ERROR("Unable to map AGP texture region\n"); + return err; + } + + 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! (%p, %p, %p)\n", + dev_priv->warp->handle, dev_priv->primary->handle, + dev->agp_buffer_map->handle); + return DRM_ERR(ENOMEM); + } + + dev_priv->dma_access = MGA_PAGPXFER; + dev_priv->wagp_enable = MGA_WAGP_ENABLE; + + DRM_INFO("Initialized card for AGP DMA.\n"); + return 0; +} + +/** + * Bootstrap the driver for PCI DMA. + * + * \todo + * The algorithm for decreasing the size of the primary DMA buffer could be + * better. The size should be rounded up to the nearest page size, then + * decrease the request size by a single page each pass through the loop. + * + * \todo + * Determine whether the maximum address passed to drm_pci_alloc is correct. + * The same goes for drm_addbufs_pci. + * + * \sa mga_do_dma_bootstrap, mga_do_agp_dma_bootstrap + */ +static int mga_do_pci_dma_bootstrap(drm_device_t * dev, + drm_mga_dma_bootstrap_t * dma_bs) +{ + drm_mga_private_t * const dev_priv = (drm_mga_private_t *) dev->dev_private; + const unsigned int warp_size = mga_warp_microcode_size(dev_priv); + unsigned int primary_size; + unsigned int bin_count; + int err; + drm_buf_desc_t req; + + + if (dev->dma == NULL) { + DRM_ERROR("dev->dma is NULL\n"); + return DRM_ERR(EFAULT); + } + + /* The proper alignment is 0x100 for this mapping */ + err = drm_addmap(dev, 0, warp_size, _DRM_CONSISTENT, + _DRM_READ_ONLY, &dev_priv->warp); + if (err != 0) { + DRM_ERROR("Unable to create mapping for WARP microcode\n"); + return err; + } + + /* Other than the bottom two bits being used to encode other + * information, there don't appear to be any restrictions on the + * alignment of the primary or secondary DMA buffers. + */ + + for ( primary_size = dma_bs->primary_size + ; primary_size != 0 + ; primary_size >>= 1 ) { + /* The proper alignment for this mapping is 0x04 */ + err = drm_addmap(dev, 0, primary_size, _DRM_CONSISTENT, + _DRM_READ_ONLY, &dev_priv->primary); + if (!err) + break; + } + + if (err != 0) { + DRM_ERROR("Unable to allocate primary DMA region\n"); + return DRM_ERR(ENOMEM); + } + + if (dev_priv->primary->size != dma_bs->primary_size) { + DRM_INFO("Primary DMA buffer size reduced from %u to %u.\n", + dma_bs->primary_size, + (unsigned) dev_priv->primary->size); + dma_bs->primary_size = dev_priv->primary->size; + } + + for ( bin_count = dma_bs->secondary_bin_count + ; bin_count > 0 + ; bin_count-- ) { + (void) memset( &req, 0, sizeof(req) ); + req.count = bin_count; + req.size = dma_bs->secondary_bin_size; + + err = drm_addbufs_pci( dev, & req ); + if (!err) { + break; + } + } + + if (bin_count == 0) { + DRM_ERROR("Unable to add secondary DMA buffers\n"); + return err; + } + + if (bin_count != dma_bs->secondary_bin_count) { + DRM_INFO("Secondary PCI DMA buffer bin count reduced from %u " + "to %u.\n", dma_bs->secondary_bin_count, bin_count); + + dma_bs->secondary_bin_count = bin_count; + } + + dev_priv->dma_access = 0; + dev_priv->wagp_enable = 0; + + dma_bs->agp_mode = 0; + + DRM_INFO("Initialized card for PCI DMA.\n"); + return 0; +} + + +static int mga_do_dma_bootstrap(drm_device_t * dev, + drm_mga_dma_bootstrap_t * dma_bs) +{ + const int is_agp = (dma_bs->agp_mode != 0) && drm_device_is_agp(dev); + int err; + drm_mga_private_t * const dev_priv = + (drm_mga_private_t *) dev->dev_private; + + + dev_priv->used_new_dma_init = 1; + + /* The first steps are the same for both PCI and AGP based DMA. Map + * the cards MMIO registers and map a status page. + */ + err = drm_addmap( dev, dev_priv->mmio_base, dev_priv->mmio_size, + _DRM_REGISTERS, _DRM_READ_ONLY, & dev_priv->mmio ); + if (err) { + DRM_ERROR("Unable to map MMIO region\n"); + return err; + } + + + err = drm_addmap( dev, 0, SAREA_MAX, _DRM_SHM, + _DRM_READ_ONLY | _DRM_LOCKED | _DRM_KERNEL, + & dev_priv->status ); + if (err) { + DRM_ERROR("Unable to map status region\n"); + return err; + } + + + /* The DMA initialization procedure is slightly different for PCI and + * AGP cards. AGP cards just allocate a large block of AGP memory and + * carve off portions of it for internal uses. The remaining memory + * is returned to user-mode to be used for AGP textures. + */ + + if (is_agp) { + err = mga_do_agp_dma_bootstrap(dev, dma_bs); + } + + /* If we attempted to initialize the card for AGP DMA but failed, + * clean-up any mess that may have been created. + */ + + if (err) { + mga_do_cleanup_dma(dev); + } + + + /* Not only do we want to try and initialized PCI cards for PCI DMA, + * but we also try to initialized AGP cards that could not be + * initialized for AGP DMA. This covers the case where we have an AGP + * card in a system with an unsupported AGP chipset. In that case the + * card will be detected as AGP, but we won't be able to allocate any + * AGP memory, etc. + */ + + if (!is_agp || err) { + err = mga_do_pci_dma_bootstrap(dev, dma_bs); + } + + + return err; +} + +int mga_dma_bootstrap(DRM_IOCTL_ARGS) +{ + DRM_DEVICE; + drm_mga_dma_bootstrap_t bootstrap; + int err; + + + DRM_COPY_FROM_USER_IOCTL(bootstrap, + (drm_mga_dma_bootstrap_t __user *) data, + sizeof(bootstrap)); + + err = mga_do_dma_bootstrap(dev, & bootstrap); + if (! err) { + static const int modes[] = { 0, 1, 2, 2, 4, 4, 4, 4 }; + const drm_mga_private_t * const dev_priv = + (drm_mga_private_t *) dev->dev_private; + + if (dev_priv->agp_textures != NULL) { + bootstrap.texture_handle = dev_priv->agp_textures->offset; + bootstrap.texture_size = dev_priv->agp_textures->size; + } + else { + bootstrap.texture_handle = 0; + bootstrap.texture_size = 0; + } + + bootstrap.agp_mode = modes[ bootstrap.agp_mode & 0x07 ]; + if (DRM_COPY_TO_USER( (void __user *) data, & bootstrap, + sizeof(bootstrap))) { + err = DRM_ERR(EFAULT); + } + } + else { + mga_do_cleanup_dma(dev); + } + + return err; +} + 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 = dev->dev_private; - dev_priv->usec_timeout = MGA_DEFAULT_USEC_TIMEOUT; - - if ( init->sgram ) { + if (init->sgram) { dev_priv->clear_cmd = MGA_DWGCTL_CLEAR | MGA_ATYPE_BLK; } else { dev_priv->clear_cmd = MGA_DWGCTL_CLEAR | MGA_ATYPE_RSTR; @@ -436,88 +799,66 @@ static int mga_do_init_dma( drm_device_t *dev, drm_mga_init_t *init ) 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 ); + if (!dev_priv->sarea) { + DRM_ERROR("failed to find sarea!\n"); 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); + if (! dev_priv->used_new_dma_init) { + dev_priv->status = drm_core_findmap(dev, init->status_offset); + if (!dev_priv->status) { + DRM_ERROR("failed to find status page!\n"); + 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"); + 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"); + 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"); + return DRM_ERR(EINVAL); + } + dev->agp_buffer_token = init->buffers_offset; + 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"); + return DRM_ERR(EINVAL); + } + + drm_core_ioremap(dev_priv->warp, dev); + drm_core_ioremap(dev_priv->primary, dev); + drm_core_ioremap(dev->agp_buffer_map, dev); } 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 ); + if (!dev_priv->warp->handle || + !dev_priv->primary->handle || + ((dev_priv->dma_access != 0) && + ((dev->agp_buffer_map == NULL) || + (dev->agp_buffer_map->handle == NULL)))) { + DRM_ERROR("failed to ioremap agp regions!\n"); 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 ); + ret = mga_warp_install_microcode(dev_priv); + if (ret < 0) { + DRM_ERROR("failed to install WARP ucode!\n"); 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 ); + ret = mga_warp_init(dev_priv); + if (ret < 0) { + DRM_ERROR("failed to init WARP engine!\n"); return ret; } @@ -557,22 +898,18 @@ static int mga_do_init_dma( drm_device_t *dev, drm_mga_init_t *init ) 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 ); + if (mga_freelist_init(dev, dev_priv) < 0) { + DRM_ERROR("could not initialize freelist\n"); return DRM_ERR(ENOMEM); } - /* Make dev_private visable to others. */ - dev->dev_private = (void *)dev_priv; return 0; } static int mga_do_cleanup_dma( drm_device_t *dev ) { - DRM_DEBUG( "\n" ); + int err = 0; + DRM_DEBUG("\n"); /* Make sure interrupts are disabled here because the uninstall ioctl * may not have been called from userspace and after dev_private @@ -583,20 +920,49 @@ static int mga_do_cleanup_dma( drm_device_t *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 ); + if ((dev_priv->warp != NULL) + && (dev_priv->mmio->type != _DRM_CONSISTENT)) + drm_core_ioremapfree(dev_priv->warp, dev); + + if ((dev_priv->primary != NULL) + && (dev_priv->primary->type != _DRM_CONSISTENT)) + drm_core_ioremapfree(dev_priv->primary, dev); - if ( dev_priv->head != NULL ) { - mga_freelist_cleanup( dev ); + if (dev->agp_buffer_map != NULL) + drm_core_ioremapfree(dev->agp_buffer_map, dev); + + if (dev_priv->used_new_dma_init) { + if (dev_priv->agp_mem != NULL) { + dev_priv->agp_textures = NULL; + drm_unbind_agp(dev_priv->agp_mem); + + drm_free_agp(dev_priv->agp_mem, dev_priv->agp_pages); + dev_priv->agp_pages = 0; + dev_priv->agp_mem = NULL; + } + + if ((dev->agp != NULL) && dev->agp->acquired) { + err = drm_agp_release(dev); + } + + dev_priv->used_new_dma_init = 0; } - drm_free( dev->dev_private, sizeof(drm_mga_private_t), - DRM_MEM_DRIVER ); - dev->dev_private = NULL; + dev_priv->warp = NULL; + dev_priv->primary = NULL; + dev_priv->mmio = NULL; + dev_priv->status = NULL; + dev_priv->sarea = NULL; + dev_priv->sarea_priv = NULL; + dev->agp_buffer_map = NULL; + + memset(&dev_priv->prim, 0, sizeof(dev_priv->prim)); + dev_priv->warp_pipe = 0; + memset(dev_priv->warp_pipe_phys, 0, sizeof(dev_priv->warp_pipe_phys)); + + if (dev_priv->head != NULL) { + mga_freelist_cleanup(dev); + } } return 0; @@ -606,14 +972,20 @@ int mga_dma_init( DRM_IOCTL_ARGS ) { DRM_DEVICE; drm_mga_init_t init; + int err; LOCK_TEST_WITH_RETURN( dev, filp ); - DRM_COPY_FROM_USER_IOCTL( init, (drm_mga_init_t __user *)data, sizeof(init) ); + 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 ); + err = mga_do_init_dma(dev, &init); + if (err) { + (void) mga_do_cleanup_dma(dev); + } + return err; case MGA_CLEANUP_DMA: return mga_do_cleanup_dma( dev ); } @@ -742,7 +1114,21 @@ int mga_dma_buffers( DRM_IOCTL_ARGS ) return ret; } -void mga_driver_pretakedown(drm_device_t *dev) +/** + * Called just before the module is unloaded. + */ +int mga_driver_postcleanup(drm_device_t * dev) +{ + drm_free(dev->dev_private, sizeof(drm_mga_private_t), DRM_MEM_DRIVER); + dev->dev_private = NULL; + + return 0; +} + +/** + * Called when the last opener of the device is closed. + */ +void mga_driver_pretakedown(drm_device_t * dev) { mga_do_cleanup_dma( dev ); } |
