via_map.c

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/*
 * 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 <drm/drmP.h>
#include <drm/via_drm.h>
#include "via_drv.h"

static int via_do_init_map(struct drm_device *dev, drm_via_init_t *init)
{
    drm_via_private_t *dev_priv = dev->dev_private;

    DRM_DEBUG("\n");

    dev_priv->sarea = drm_getsarea(dev);
    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);

    via_init_dmablit(dev);

    dev->dev_private = (void *)dev_priv;
    return 0;
}

int via_do_cleanup_map(struct drm_device *dev)
{
    via_dma_cleanup(dev);

    return 0;
}

int via_map_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
{
    drm_via_init_t *init = data;

    DRM_DEBUG("\n");

    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;
}

int via_driver_load(struct drm_device *dev, unsigned long chipset)
{
    drm_via_private_t *dev_priv;
    int ret = 0;

    dev_priv = kzalloc(sizeof(drm_via_private_t), GFP_KERNEL);
    if (dev_priv == NULL)
        return -ENOMEM;

    idr_init(&dev_priv->object_idr);
    dev->dev_private = (void *)dev_priv;

    dev_priv->chipset = chipset;

    pci_set_master(dev->pdev);

    ret = drm_vblank_init(dev, 1);
    if (ret) {
        kfree(dev_priv);
        return ret;
    }

    return 0;
}

int via_driver_unload(struct drm_device *dev)
{
    drm_via_private_t *dev_priv = dev->dev_private;

    idr_remove_all(&dev_priv->object_idr);
    idr_destroy(&dev_priv->object_idr);

    kfree(dev_priv);

    return 0;
}