1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later
2*4882a593Smuzhiyun /* Hisilicon Hibmc SoC drm driver
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * Based on the bochs drm driver.
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun * Copyright (c) 2016 Huawei Limited.
7*4882a593Smuzhiyun *
8*4882a593Smuzhiyun * Author:
9*4882a593Smuzhiyun * Rongrong Zou <zourongrong@huawei.com>
10*4882a593Smuzhiyun * Rongrong Zou <zourongrong@gmail.com>
11*4882a593Smuzhiyun * Jianhua Li <lijianhua@huawei.com>
12*4882a593Smuzhiyun */
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun #include <linux/pci.h>
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun #include <drm/drm_atomic_helper.h>
17*4882a593Smuzhiyun #include <drm/drm_gem.h>
18*4882a593Smuzhiyun #include <drm/drm_gem_framebuffer_helper.h>
19*4882a593Smuzhiyun #include <drm/drm_gem_vram_helper.h>
20*4882a593Smuzhiyun #include <drm/drm_print.h>
21*4882a593Smuzhiyun
22*4882a593Smuzhiyun #include "hibmc_drm_drv.h"
23*4882a593Smuzhiyun
hibmc_mm_init(struct hibmc_drm_private * hibmc)24*4882a593Smuzhiyun int hibmc_mm_init(struct hibmc_drm_private *hibmc)
25*4882a593Smuzhiyun {
26*4882a593Smuzhiyun struct drm_vram_mm *vmm;
27*4882a593Smuzhiyun int ret;
28*4882a593Smuzhiyun struct drm_device *dev = hibmc->dev;
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun vmm = drm_vram_helper_alloc_mm(dev,
31*4882a593Smuzhiyun pci_resource_start(dev->pdev, 0),
32*4882a593Smuzhiyun hibmc->fb_size);
33*4882a593Smuzhiyun if (IS_ERR(vmm)) {
34*4882a593Smuzhiyun ret = PTR_ERR(vmm);
35*4882a593Smuzhiyun drm_err(dev, "Error initializing VRAM MM; %d\n", ret);
36*4882a593Smuzhiyun return ret;
37*4882a593Smuzhiyun }
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun return 0;
40*4882a593Smuzhiyun }
41*4882a593Smuzhiyun
hibmc_mm_fini(struct hibmc_drm_private * hibmc)42*4882a593Smuzhiyun void hibmc_mm_fini(struct hibmc_drm_private *hibmc)
43*4882a593Smuzhiyun {
44*4882a593Smuzhiyun if (!hibmc->dev->vram_mm)
45*4882a593Smuzhiyun return;
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun drm_vram_helper_release_mm(hibmc->dev);
48*4882a593Smuzhiyun }
49*4882a593Smuzhiyun
hibmc_dumb_create(struct drm_file * file,struct drm_device * dev,struct drm_mode_create_dumb * args)50*4882a593Smuzhiyun int hibmc_dumb_create(struct drm_file *file, struct drm_device *dev,
51*4882a593Smuzhiyun struct drm_mode_create_dumb *args)
52*4882a593Smuzhiyun {
53*4882a593Smuzhiyun return drm_gem_vram_fill_create_dumb(file, dev, 0, 128, args);
54*4882a593Smuzhiyun }
55*4882a593Smuzhiyun
56*4882a593Smuzhiyun const struct drm_mode_config_funcs hibmc_mode_funcs = {
57*4882a593Smuzhiyun .mode_valid = drm_vram_helper_mode_valid,
58*4882a593Smuzhiyun .atomic_check = drm_atomic_helper_check,
59*4882a593Smuzhiyun .atomic_commit = drm_atomic_helper_commit,
60*4882a593Smuzhiyun .fb_create = drm_gem_fb_create,
61*4882a593Smuzhiyun };
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