diff options
Diffstat (limited to 'drivers/char/drm/via_map.c')
| -rw-r--r-- | drivers/char/drm/via_map.c | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/drivers/char/drm/via_map.c b/drivers/char/drm/via_map.c new file mode 100644 index 0000000..bb17113 --- /dev/null +++ b/drivers/char/drm/via_map.c @@ -0,0 +1,111 @@ +/* + * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved. + * Copyright 2001-2003 S3 Graphics, Inc. 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, sub license, + * 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 NON-INFRINGEMENT. IN NO EVENT SHALL + * VIA, S3 GRAPHICS, 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. + */ +#include "drmP.h" +#include "via_drm.h" +#include "via_drv.h" + +static int via_do_init_map(drm_device_t * dev, drm_via_init_t * init) +{ + drm_via_private_t *dev_priv; + + DRM_DEBUG("%s\n", __FUNCTION__); + + dev_priv = drm_alloc(sizeof(drm_via_private_t), DRM_MEM_DRIVER); + if (dev_priv == NULL) + return -ENOMEM; + + memset(dev_priv, 0, sizeof(drm_via_private_t)); + + DRM_GETSAREA(); + if (!dev_priv->sarea) { + DRM_ERROR("could not find sarea!\n"); + dev->dev_private = (void *)dev_priv; + via_do_cleanup_map(dev); + return -EINVAL; + } + + dev_priv->fb = drm_core_findmap(dev, init->fb_offset); + if (!dev_priv->fb) { + DRM_ERROR("could not find framebuffer!\n"); + dev->dev_private = (void *)dev_priv; + via_do_cleanup_map(dev); + return -EINVAL; + } + dev_priv->mmio = drm_core_findmap(dev, init->mmio_offset); + if (!dev_priv->mmio) { + DRM_ERROR("could not find mmio region!\n"); + dev->dev_private = (void *)dev_priv; + via_do_cleanup_map(dev); + return -EINVAL; + } + + dev_priv->sarea_priv = + (drm_via_sarea_t *) ((u8 *) dev_priv->sarea->handle + + init->sarea_priv_offset); + + dev_priv->agpAddr = init->agpAddr; + + via_init_futex( dev_priv ); + dev_priv->pro_group_a = (dev->pdev->device == 0x3118); + + dev->dev_private = (void *)dev_priv; + return 0; +} + +int via_do_cleanup_map(drm_device_t * dev) +{ + if (dev->dev_private) { + + drm_via_private_t *dev_priv = dev->dev_private; + + via_dma_cleanup(dev); + + drm_free(dev_priv, sizeof(drm_via_private_t), DRM_MEM_DRIVER); + dev->dev_private = NULL; + } + + return 0; +} + +int via_map_init(DRM_IOCTL_ARGS) +{ + DRM_DEVICE; + drm_via_init_t init; + + DRM_DEBUG("%s\n", __FUNCTION__); + + DRM_COPY_FROM_USER_IOCTL(init, (drm_via_init_t __user *) data, + sizeof(init)); + + switch (init.func) { + case VIA_INIT_MAP: + return via_do_init_map(dev, &init); + case VIA_CLEANUP_MAP: + return via_do_cleanup_map(dev); + } + + return -EINVAL; +} + + |