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/**************************************************************************
*
* Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
* 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
* THE COPYRIGHT HOLDERS, AUTHORS 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.
*
**************************************************************************/
#define HAVE_STDINT_H
#define _FILE_OFFSET_BITS 64
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "internal.h"
#include <sys/mman.h>
#include <sys/ioctl.h>
#include "xf86drm.h"
#include "i915_drm.h"
struct dumb_bo
{
struct kms_bo base;
unsigned map_count;
};
static int
dumb_get_prop(struct kms_driver *kms, unsigned key, unsigned *out)
{
switch (key) {
case KMS_BO_TYPE:
*out = KMS_BO_TYPE_SCANOUT_X8R8G8B8 | KMS_BO_TYPE_CURSOR_64X64_A8R8G8B8;
break;
default:
return -EINVAL;
}
return 0;
}
static int
dumb_destroy(struct kms_driver *kms)
{
free(kms);
return 0;
}
static int
dumb_bo_create(struct kms_driver *kms,
const unsigned width, const unsigned height,
const enum kms_bo_type type, const unsigned *attr,
struct kms_bo **out)
{
struct drm_mode_create_dumb arg;
struct dumb_bo *bo;
int i, ret;
for (i = 0; attr[i]; i += 2) {
switch (attr[i]) {
case KMS_WIDTH:
case KMS_HEIGHT:
break;
case KMS_BO_TYPE:
break;
default:
return -EINVAL;
}
}
bo = calloc(1, sizeof(*bo));
if (!bo)
return -ENOMEM;
memset(&arg, 0, sizeof(arg));
arg.bpp = 16;
arg.width = width;
arg.height = height;
ret = drmIoctl(kms->fd, DRM_IOCTL_MODE_CREATE_DUMB, &arg);
if (ret)
goto err_free;
bo->base.kms = kms;
bo->base.handle = arg.handle;
bo->base.size = arg.size;
bo->base.pitch = arg.pitch;
*out = &bo->base;
return 0;
err_free:
free(bo);
return ret;
}
static int
dumb_bo_get_prop(struct kms_bo *bo, unsigned key, unsigned *out)
{
switch (key) {
default:
return -EINVAL;
}
}
static int
dumb_bo_map(struct kms_bo *_bo, void **out)
{
struct dumb_bo *bo = (struct dumb_bo *)_bo;
struct drm_mode_map_dumb arg;
void *map = NULL;
int ret;
if (bo->base.ptr) {
bo->map_count++;
*out = bo->base.ptr;
return 0;
}
memset(&arg, 0, sizeof(arg));
arg.handle = bo->base.handle;
ret = drmIoctl(bo->base.kms->fd, DRM_IOCTL_MODE_MAP_DUMB, &arg);
if (ret)
return ret;
map = mmap(0, bo->base.size, PROT_READ | PROT_WRITE, MAP_SHARED, bo->base.kms->fd, arg.offset);
if (map == MAP_FAILED)
return -errno;
bo->base.ptr = map;
bo->map_count++;
*out = bo->base.ptr;
return 0;
}
static int
dumb_bo_unmap(struct kms_bo *_bo)
{
struct dumb_bo *bo = (struct dumb_bo *)_bo;
bo->map_count--;
return 0;
}
static int
dumb_bo_destroy(struct kms_bo *_bo)
{
struct dumb_bo *bo = (struct dumb_bo *)_bo;
struct drm_mode_destroy_dumb arg;
int ret;
if (bo->base.ptr) {
/* XXX Sanity check map_count */
munmap(bo->base.ptr, bo->base.size);
bo->base.ptr = NULL;
}
memset(&arg, 0, sizeof(arg));
arg.handle = bo->base.handle;
ret = drmIoctl(bo->base.kms->fd, DRM_IOCTL_MODE_DESTROY_DUMB, &arg);
if (ret)
return -errno;
free(bo);
return 0;
}
int
dumb_create(int fd, struct kms_driver **out)
{
struct kms_driver *kms;
int ret;
uint64_t cap = 0;
ret = drmGetCap(fd, DRM_CAP_DUMB_BUFFER, &cap);
if (ret || cap == 0)
return -EINVAL;
kms = calloc(1, sizeof(*kms));
if (!kms)
return -ENOMEM;
kms->fd = fd;
kms->bo_create = dumb_bo_create;
kms->bo_map = dumb_bo_map;
kms->bo_unmap = dumb_bo_unmap;
kms->bo_get_prop = dumb_bo_get_prop;
kms->bo_destroy = dumb_bo_destroy;
kms->get_prop = dumb_get_prop;
kms->destroy = dumb_destroy;
*out = kms;
return 0;
}
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