static int fimg2d_check_params(struct fimg2d_blit __user *u)
{
int w, h, i;
struct fimg2d_param *p = &u->param;
struct fimg2d_image *img, *buf[MAX_IMAGES] = image_table(u);
struct fimg2d_scale *scl;
struct fimg2d_clip *clp;
struct fimg2d_rect *r;
if (!u->dst)
return -1;
/* DST op makes no effect */
if (u->op < 0 || u->op == BLIT_OP_DST || u->op >= BLIT_OP_END)
return -1;
for (i = 0; i < MAX_IMAGES; i++) {
img = buf[i];
if (!img)
continue;
w = img->width;
h = img->height;
r = &img->rect;
/* 8000: max width & height */
if (w > 8000 || h > 8000 || r->x1 == r->x2 || r->y1 == r->y2)
return -1;
}
scl = &p->scaling;
if (scl->mode) {
img = buf[ISRC];
r = &img->rect;
/* src_w and src_h of scale must be the equal to src rect */
if (img->addr.type &&
((rect_w(r) != scl->src_w) ||
(rect_h(r) != scl->src_h)))
return -1;
if (!scl->src_w || !scl->src_h || !scl->dst_w || !scl->dst_h)
return -1;
}
clp = &p->clipping;
if (clp->enable) {
img = buf[IDST];
r = &img->rect;
/* clip rect must be within dst rect */
if (clp->x1 >= r->x2 || clp->x2 <= r->x1 ||
clp->y1 >= r->y2 || clp->y2 <= r->y1)
return -1;
}
return 0;
}
static mlval ml_image_table(mlval argument)
{
argument = image_table(argument);
if(argument == MLERROR)
switch(errno)
{
case EIMPL:
exn_raise_string(perv_exn_ref_save, "Image table not implemented");
case EIMAGEREAD:
exn_raise_string(perv_exn_ref_save, "Error reading opened image file");
case EIMAGEOPEN:
exn_raise_string(perv_exn_ref_save, "Unable to open image file");
default:
exn_raise_string(perv_exn_ref_save,
"Unexpected error from image_table()");
}
return(argument);
}
int fimg2d_add_command(struct fimg2d_control *info, struct fimg2d_context *ctx,
struct fimg2d_blit *blit)
{
int i, ret;
struct fimg2d_image *buf[MAX_IMAGES] = image_table(blit);
struct fimg2d_bltcmd *cmd;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (!cmd)
return -ENOMEM;
cmd->ctx = ctx;
cmd->op = blit->op;
cmd->sync = blit->sync;
cmd->seq_no = blit->seq_no;
memcpy(&cmd->param, &blit->param, sizeof(cmd->param));
for (i = 0; i < MAX_IMAGES; i++) {
if (!buf[i])
continue;
if (copy_from_user(&cmd->image[i], buf[i],
sizeof(struct fimg2d_image))) {
ret = -EFAULT;
goto err_user;
}
}
#ifdef CONFIG_VIDEO_FIMG2D_DEBUG
fimg2d_dump_command(cmd);
#endif
if (fimg2d_check_params(info, cmd)) {
printk(KERN_ERR "[%s] invalid params\n", __func__);
fimg2d_dump_command(cmd);
ret = -EINVAL;
goto err_user;
}
fimg2d_fixup_params(cmd);
ret = fimg2d_import_bufs(info, cmd);
if (ret)
goto err_user;
/* add command node and increase ncmd */
spin_lock(&info->bltlock);
if (atomic_read(&info->suspended)) {
fimg2d_debug("fimg2d suspended, do sw fallback\n");
spin_unlock(&info->bltlock);
ret = -EFAULT;
goto err_user;
}
atomic_inc(&ctx->ncmd);
fimg2d_enqueue(&cmd->node, &info->cmd_q);
fimg2d_debug("ctx %p ncmd(%d) seq_no(%u)\n",
cmd->ctx, atomic_read(&ctx->ncmd), cmd->seq_no);
spin_unlock(&info->bltlock);
return 0;
err_user:
kfree(cmd);
return ret;
}
int fimg2d_add_command(struct fimg2d_control *info, struct fimg2d_context *ctx,
struct fimg2d_blit __user *u)
{
int i;
struct fimg2d_bltcmd *cmd;
struct fimg2d_image *buf[MAX_IMAGES] = image_table(u);
#ifdef CONFIG_VIDEO_FIMG2D_DEBUG
fimg2d_print_params(u);
#endif
if (info->err) {
printk(KERN_ERR "[%s] device error, do sw fallback\n", __func__);
return -EFAULT;
}
if (fimg2d_check_params(u)) {
printk(KERN_ERR "[%s] invalid params\n", __func__);
fimg2d_print_params(u);
return -EINVAL;
}
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (!cmd)
return -ENOMEM;
cmd->ctx = ctx;
cmd->op = u->op;
cmd->seq_no = u->seq_no;
cmd->sync = u->sync;
if (copy_from_user(&cmd->param, &u->param, sizeof(cmd->param)))
goto err_user;
for (i = 0; i < MAX_IMAGES; i++) {
if (!buf[i])
continue;
if (copy_from_user(&cmd->image[i], buf[i],
sizeof(cmd->image[i])))
goto err_user;
}
fimg2d_fixup_params(cmd);
if (fimg2d_check_dma_sync(cmd))
goto err_user;
/* add command node and increase ncmd */
spin_lock(&info->bltlock);
if (atomic_read(&info->suspended)) {
fimg2d_debug("fimg2d suspended, do sw fallback\n");
spin_unlock(&info->bltlock);
goto err_user;
}
atomic_inc(&ctx->ncmd);
fimg2d_enqueue(&cmd->node, &info->cmd_q);
fimg2d_debug("ctx %p pgd %p ncmd(%d) seq_no(%u)\n",
cmd->ctx, (unsigned long *)cmd->ctx->mm->pgd,
atomic_read(&ctx->ncmd), cmd->seq_no);
spin_unlock(&info->bltlock);
return 0;
err_user:
kfree(cmd);
return -EFAULT;
}
int fimg2d_add_command(struct fimg2d_control *info, struct fimg2d_context *ctx,
struct fimg2d_blit *blit)
{
int i, ret;
struct fimg2d_image *buf[MAX_IMAGES] = image_table(blit);
struct fimg2d_bltcmd *cmd;
struct fimg2d_image dst;
if (blit->dst)
if (copy_from_user(&dst, (void *)blit->dst, sizeof(dst)))
return -EFAULT;
if ((blit->dst) && (dst.addr.type == ADDR_USER))
up_write(&page_alloc_slow_rwsem);
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if ((blit->dst) && (dst.addr.type == ADDR_USER))
down_write(&page_alloc_slow_rwsem);
if (!cmd)
return -ENOMEM;
for (i = 0; i < MAX_IMAGES; i++) {
if (!buf[i])
continue;
if (copy_from_user(&cmd->image[i], buf[i],
sizeof(struct fimg2d_image))) {
ret = -EFAULT;
goto err_user;
}
}
cmd->ctx = ctx;
cmd->op = blit->op;
cmd->sync = blit->sync;
cmd->seq_no = blit->seq_no;
memcpy(&cmd->param, &blit->param, sizeof(cmd->param));
#ifdef CONFIG_VIDEO_FIMG2D_DEBUG
fimg2d_dump_command(cmd);
#endif
if (fimg2d_check_params(cmd)) {
printk(KERN_ERR "[%s] invalid params\n", __func__);
fimg2d_dump_command(cmd);
ret = -EINVAL;
goto err_user;
}
fimg2d_fixup_params(cmd);
if (fimg2d_check_dma_sync(cmd)) {
ret = -EFAULT;
goto err_user;
}
/* add command node and increase ncmd */
spin_lock(&info->bltlock);
if (atomic_read(&info->suspended)) {
fimg2d_debug("fimg2d suspended, do sw fallback\n");
spin_unlock(&info->bltlock);
ret = -EFAULT;
goto err_user;
}
atomic_inc(&ctx->ncmd);
fimg2d_enqueue(&cmd->node, &info->cmd_q);
fimg2d_debug("ctx %p pgd %p ncmd(%d) seq_no(%u)\n",
cmd->ctx, (unsigned long *)cmd->ctx->mm->pgd,
atomic_read(&ctx->ncmd), cmd->seq_no);
spin_unlock(&info->bltlock);
return 0;
err_user:
kfree(cmd);
return ret;
}