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1/*
2 * Copyright (C) 2013 Red Hat
3 * Author: Rob Clark <robdclark@gmail.com>
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published by
7 * the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program. If not, see <http://www.gnu.org/licenses/>.
16 */
17
18#include "msm_drv.h"
19#include "msm_kms.h"
20
21#include "drm_crtc.h"
22#include "drm_crtc_helper.h"
23
24struct msm_framebuffer {
25 struct drm_framebuffer base;
26 const struct msm_format *format;
27 struct drm_gem_object *planes[MAX_PLANE];
28};
29#define to_msm_framebuffer(x) container_of(x, struct msm_framebuffer, base)
30
31
32static int msm_framebuffer_create_handle(struct drm_framebuffer *fb,
33 struct drm_file *file_priv,
34 unsigned int *handle)
35{
36 struct msm_framebuffer *msm_fb = to_msm_framebuffer(fb);
37 return drm_gem_handle_create(file_priv,
38 msm_fb->planes[0], handle);
39}
40
41static void msm_framebuffer_destroy(struct drm_framebuffer *fb)
42{
43 struct msm_framebuffer *msm_fb = to_msm_framebuffer(fb);
44 int i, n = drm_format_num_planes(fb->pixel_format);
45
46 DBG("destroy: FB ID: %d (%p)", fb->base.id, fb);
47
48 drm_framebuffer_cleanup(fb);
49
50 for (i = 0; i < n; i++) {
51 struct drm_gem_object *bo = msm_fb->planes[i];
52 if (bo)
53 drm_gem_object_unreference_unlocked(bo);
54 }
55
56 kfree(msm_fb);
57}
58
59static int msm_framebuffer_dirty(struct drm_framebuffer *fb,
60 struct drm_file *file_priv, unsigned flags, unsigned color,
61 struct drm_clip_rect *clips, unsigned num_clips)
62{
63 return 0;
64}
65
66static const struct drm_framebuffer_funcs msm_framebuffer_funcs = {
67 .create_handle = msm_framebuffer_create_handle,
68 .destroy = msm_framebuffer_destroy,
69 .dirty = msm_framebuffer_dirty,
70};
71
72#ifdef CONFIG_DEBUG_FS
73void msm_framebuffer_describe(struct drm_framebuffer *fb, struct seq_file *m)
74{
75 struct msm_framebuffer *msm_fb = to_msm_framebuffer(fb);
76 int i, n = drm_format_num_planes(fb->pixel_format);
77
78 seq_printf(m, "fb: %dx%d@%4.4s (%2d, ID:%d)\n",
79 fb->width, fb->height, (char *)&fb->pixel_format,
80 fb->refcount.refcount.counter, fb->base.id);
81
82 for (i = 0; i < n; i++) {
83 seq_printf(m, " %d: offset=%d pitch=%d, obj: ",
84 i, fb->offsets[i], fb->pitches[i]);
85 msm_gem_describe(msm_fb->planes[i], m);
86 }
87}
88#endif
89
90/* prepare/pin all the fb's bo's for scanout. Note that it is not valid
91 * to prepare an fb more multiple different initiator 'id's. But that
92 * should be fine, since only the scanout (mdpN) side of things needs
93 * this, the gpu doesn't care about fb's.
94 */
95int msm_framebuffer_prepare(struct drm_framebuffer *fb, int id)
96{
97 struct msm_framebuffer *msm_fb = to_msm_framebuffer(fb);
98 int ret, i, n = drm_format_num_planes(fb->pixel_format);
99 uint32_t iova;
100
101 for (i = 0; i < n; i++) {
102 ret = msm_gem_get_iova(msm_fb->planes[i], id, &iova);
103 DBG("FB[%u]: iova[%d]: %08x (%d)", fb->base.id, i, iova, ret);
104 if (ret)
105 return ret;
106 }
107
108 return 0;
109}
110
111void msm_framebuffer_cleanup(struct drm_framebuffer *fb, int id)
112{
113 struct msm_framebuffer *msm_fb = to_msm_framebuffer(fb);
114 int i, n = drm_format_num_planes(fb->pixel_format);
115
116 for (i = 0; i < n; i++)
117 msm_gem_put_iova(msm_fb->planes[i], id);
118}
119
120uint32_t msm_framebuffer_iova(struct drm_framebuffer *fb, int id, int plane)
121{
122 struct msm_framebuffer *msm_fb = to_msm_framebuffer(fb);
123 if (!msm_fb->planes[plane])
124 return 0;
125 return msm_gem_iova(msm_fb->planes[plane], id) + fb->offsets[plane];
126}
127
128struct drm_gem_object *msm_framebuffer_bo(struct drm_framebuffer *fb, int plane)
129{
130 struct msm_framebuffer *msm_fb = to_msm_framebuffer(fb);
131 return msm_fb->planes[plane];
132}
133
134const struct msm_format *msm_framebuffer_format(struct drm_framebuffer *fb)
135{
136 struct msm_framebuffer *msm_fb = to_msm_framebuffer(fb);
137 return msm_fb->format;
138}
139
140struct drm_framebuffer *msm_framebuffer_create(struct drm_device *dev,
141 struct drm_file *file, const struct drm_mode_fb_cmd2 *mode_cmd)
142{
143 struct drm_gem_object *bos[4] = {0};
144 struct drm_framebuffer *fb;
145 int ret, i, n = drm_format_num_planes(mode_cmd->pixel_format);
146
147 for (i = 0; i < n; i++) {
148 bos[i] = drm_gem_object_lookup(dev, file,
149 mode_cmd->handles[i]);
150 if (!bos[i]) {
151 ret = -ENXIO;
152 goto out_unref;
153 }
154 }
155
156 fb = msm_framebuffer_init(dev, mode_cmd, bos);
157 if (IS_ERR(fb)) {
158 ret = PTR_ERR(fb);
159 goto out_unref;
160 }
161
162 return fb;
163
164out_unref:
165 for (i = 0; i < n; i++)
166 drm_gem_object_unreference_unlocked(bos[i]);
167 return ERR_PTR(ret);
168}
169
170struct drm_framebuffer *msm_framebuffer_init(struct drm_device *dev,
171 const struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object **bos)
172{
173 struct msm_drm_private *priv = dev->dev_private;
174 struct msm_kms *kms = priv->kms;
175 struct msm_framebuffer *msm_fb = NULL;
176 struct drm_framebuffer *fb;
177 const struct msm_format *format;
178 int ret, i, n;
179 unsigned int hsub, vsub;
180
181 DBG("create framebuffer: dev=%p, mode_cmd=%p (%dx%d@%4.4s)",
182 dev, mode_cmd, mode_cmd->width, mode_cmd->height,
183 (char *)&mode_cmd->pixel_format);
184
185 n = drm_format_num_planes(mode_cmd->pixel_format);
186 hsub = drm_format_horz_chroma_subsampling(mode_cmd->pixel_format);
187 vsub = drm_format_vert_chroma_subsampling(mode_cmd->pixel_format);
188
189 format = kms->funcs->get_format(kms, mode_cmd->pixel_format);
190 if (!format) {
191 dev_err(dev->dev, "unsupported pixel format: %4.4s\n",
192 (char *)&mode_cmd->pixel_format);
193 ret = -EINVAL;
194 goto fail;
195 }
196
197 msm_fb = kzalloc(sizeof(*msm_fb), GFP_KERNEL);
198 if (!msm_fb) {
199 ret = -ENOMEM;
200 goto fail;
201 }
202
203 fb = &msm_fb->base;
204
205 msm_fb->format = format;
206
207 if (n > ARRAY_SIZE(msm_fb->planes)) {
208 ret = -EINVAL;
209 goto fail;
210 }
211
212 for (i = 0; i < n; i++) {
213 unsigned int width = mode_cmd->width / (i ? hsub : 1);
214 unsigned int height = mode_cmd->height / (i ? vsub : 1);
215 unsigned int min_size;
216
217 min_size = (height - 1) * mode_cmd->pitches[i]
218 + width * drm_format_plane_cpp(mode_cmd->pixel_format, i)
219 + mode_cmd->offsets[i];
220
221 if (bos[i]->size < min_size) {
222 ret = -EINVAL;
223 goto fail;
224 }
225
226 msm_fb->planes[i] = bos[i];
227 }
228
229 drm_helper_mode_fill_fb_struct(fb, mode_cmd);
230
231 ret = drm_framebuffer_init(dev, fb, &msm_framebuffer_funcs);
232 if (ret) {
233 dev_err(dev->dev, "framebuffer init failed: %d\n", ret);
234 goto fail;
235 }
236
237 DBG("create: FB ID: %d (%p)", fb->base.id, fb);
238
239 return fb;
240
241fail:
242 kfree(msm_fb);
243
244 return ERR_PTR(ret);
245}
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2013 Red Hat
4 * Author: Rob Clark <robdclark@gmail.com>
5 */
6
7#include <drm/drm_crtc.h>
8#include <drm/drm_damage_helper.h>
9#include <drm/drm_file.h>
10#include <drm/drm_fourcc.h>
11#include <drm/drm_gem_framebuffer_helper.h>
12#include <drm/drm_probe_helper.h>
13
14#include "msm_drv.h"
15#include "msm_kms.h"
16#include "msm_gem.h"
17
18struct msm_framebuffer {
19 struct drm_framebuffer base;
20 const struct msm_format *format;
21};
22#define to_msm_framebuffer(x) container_of(x, struct msm_framebuffer, base)
23
24static struct drm_framebuffer *msm_framebuffer_init(struct drm_device *dev,
25 const struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object **bos);
26
27static const struct drm_framebuffer_funcs msm_framebuffer_funcs = {
28 .create_handle = drm_gem_fb_create_handle,
29 .destroy = drm_gem_fb_destroy,
30 .dirty = drm_atomic_helper_dirtyfb,
31};
32
33#ifdef CONFIG_DEBUG_FS
34void msm_framebuffer_describe(struct drm_framebuffer *fb, struct seq_file *m)
35{
36 int i, n = fb->format->num_planes;
37
38 seq_printf(m, "fb: %dx%d@%4.4s (%2d, ID:%d)\n",
39 fb->width, fb->height, (char *)&fb->format->format,
40 drm_framebuffer_read_refcount(fb), fb->base.id);
41
42 for (i = 0; i < n; i++) {
43 seq_printf(m, " %d: offset=%d pitch=%d, obj: ",
44 i, fb->offsets[i], fb->pitches[i]);
45 msm_gem_describe(fb->obj[i], m);
46 }
47}
48#endif
49
50/* prepare/pin all the fb's bo's for scanout. Note that it is not valid
51 * to prepare an fb more multiple different initiator 'id's. But that
52 * should be fine, since only the scanout (mdpN) side of things needs
53 * this, the gpu doesn't care about fb's.
54 */
55int msm_framebuffer_prepare(struct drm_framebuffer *fb,
56 struct msm_gem_address_space *aspace)
57{
58 int ret, i, n = fb->format->num_planes;
59 uint64_t iova;
60
61 for (i = 0; i < n; i++) {
62 ret = msm_gem_get_and_pin_iova(fb->obj[i], aspace, &iova);
63 DBG("FB[%u]: iova[%d]: %08llx (%d)", fb->base.id, i, iova, ret);
64 if (ret)
65 return ret;
66 }
67
68 return 0;
69}
70
71void msm_framebuffer_cleanup(struct drm_framebuffer *fb,
72 struct msm_gem_address_space *aspace)
73{
74 int i, n = fb->format->num_planes;
75
76 for (i = 0; i < n; i++)
77 msm_gem_unpin_iova(fb->obj[i], aspace);
78}
79
80uint32_t msm_framebuffer_iova(struct drm_framebuffer *fb,
81 struct msm_gem_address_space *aspace, int plane)
82{
83 if (!fb->obj[plane])
84 return 0;
85 return msm_gem_iova(fb->obj[plane], aspace) + fb->offsets[plane];
86}
87
88struct drm_gem_object *msm_framebuffer_bo(struct drm_framebuffer *fb, int plane)
89{
90 return drm_gem_fb_get_obj(fb, plane);
91}
92
93const struct msm_format *msm_framebuffer_format(struct drm_framebuffer *fb)
94{
95 struct msm_framebuffer *msm_fb = to_msm_framebuffer(fb);
96 return msm_fb->format;
97}
98
99struct drm_framebuffer *msm_framebuffer_create(struct drm_device *dev,
100 struct drm_file *file, const struct drm_mode_fb_cmd2 *mode_cmd)
101{
102 const struct drm_format_info *info = drm_get_format_info(dev,
103 mode_cmd);
104 struct drm_gem_object *bos[4] = {0};
105 struct drm_framebuffer *fb;
106 int ret, i, n = info->num_planes;
107
108 for (i = 0; i < n; i++) {
109 bos[i] = drm_gem_object_lookup(file, mode_cmd->handles[i]);
110 if (!bos[i]) {
111 ret = -ENXIO;
112 goto out_unref;
113 }
114 }
115
116 fb = msm_framebuffer_init(dev, mode_cmd, bos);
117 if (IS_ERR(fb)) {
118 ret = PTR_ERR(fb);
119 goto out_unref;
120 }
121
122 return fb;
123
124out_unref:
125 for (i = 0; i < n; i++)
126 drm_gem_object_put(bos[i]);
127 return ERR_PTR(ret);
128}
129
130static struct drm_framebuffer *msm_framebuffer_init(struct drm_device *dev,
131 const struct drm_mode_fb_cmd2 *mode_cmd, struct drm_gem_object **bos)
132{
133 const struct drm_format_info *info = drm_get_format_info(dev,
134 mode_cmd);
135 struct msm_drm_private *priv = dev->dev_private;
136 struct msm_kms *kms = priv->kms;
137 struct msm_framebuffer *msm_fb = NULL;
138 struct drm_framebuffer *fb;
139 const struct msm_format *format;
140 int ret, i, n;
141
142 DBG("create framebuffer: dev=%p, mode_cmd=%p (%dx%d@%4.4s)",
143 dev, mode_cmd, mode_cmd->width, mode_cmd->height,
144 (char *)&mode_cmd->pixel_format);
145
146 n = info->num_planes;
147 format = kms->funcs->get_format(kms, mode_cmd->pixel_format,
148 mode_cmd->modifier[0]);
149 if (!format) {
150 DRM_DEV_ERROR(dev->dev, "unsupported pixel format: %4.4s\n",
151 (char *)&mode_cmd->pixel_format);
152 ret = -EINVAL;
153 goto fail;
154 }
155
156 msm_fb = kzalloc(sizeof(*msm_fb), GFP_KERNEL);
157 if (!msm_fb) {
158 ret = -ENOMEM;
159 goto fail;
160 }
161
162 fb = &msm_fb->base;
163
164 msm_fb->format = format;
165
166 if (n > ARRAY_SIZE(fb->obj)) {
167 ret = -EINVAL;
168 goto fail;
169 }
170
171 for (i = 0; i < n; i++) {
172 unsigned int width = mode_cmd->width / (i ? info->hsub : 1);
173 unsigned int height = mode_cmd->height / (i ? info->vsub : 1);
174 unsigned int min_size;
175
176 min_size = (height - 1) * mode_cmd->pitches[i]
177 + width * info->cpp[i]
178 + mode_cmd->offsets[i];
179
180 if (bos[i]->size < min_size) {
181 ret = -EINVAL;
182 goto fail;
183 }
184
185 msm_fb->base.obj[i] = bos[i];
186 }
187
188 drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd);
189
190 ret = drm_framebuffer_init(dev, fb, &msm_framebuffer_funcs);
191 if (ret) {
192 DRM_DEV_ERROR(dev->dev, "framebuffer init failed: %d\n", ret);
193 goto fail;
194 }
195
196 DBG("create: FB ID: %d (%p)", fb->base.id, fb);
197
198 return fb;
199
200fail:
201 kfree(msm_fb);
202
203 return ERR_PTR(ret);
204}
205
206struct drm_framebuffer *
207msm_alloc_stolen_fb(struct drm_device *dev, int w, int h, int p, uint32_t format)
208{
209 struct drm_mode_fb_cmd2 mode_cmd = {
210 .pixel_format = format,
211 .width = w,
212 .height = h,
213 .pitches = { p },
214 };
215 struct drm_gem_object *bo;
216 struct drm_framebuffer *fb;
217 int size;
218
219 /* allocate backing bo */
220 size = mode_cmd.pitches[0] * mode_cmd.height;
221 DBG("allocating %d bytes for fb %d", size, dev->primary->index);
222 bo = msm_gem_new(dev, size, MSM_BO_SCANOUT | MSM_BO_WC | MSM_BO_STOLEN);
223 if (IS_ERR(bo)) {
224 dev_warn(dev->dev, "could not allocate stolen bo\n");
225 /* try regular bo: */
226 bo = msm_gem_new(dev, size, MSM_BO_SCANOUT | MSM_BO_WC);
227 }
228 if (IS_ERR(bo)) {
229 DRM_DEV_ERROR(dev->dev, "failed to allocate buffer object\n");
230 return ERR_CAST(bo);
231 }
232
233 msm_gem_object_set_name(bo, "stolenfb");
234
235 fb = msm_framebuffer_init(dev, &mode_cmd, &bo);
236 if (IS_ERR(fb)) {
237 DRM_DEV_ERROR(dev->dev, "failed to allocate fb\n");
238 /* note: if fb creation failed, we can't rely on fb destroy
239 * to unref the bo:
240 */
241 drm_gem_object_put(bo);
242 return ERR_CAST(fb);
243 }
244
245 return fb;
246}