This source file includes following definitions.
- msm_framebuffer_describe
- msm_framebuffer_prepare
- msm_framebuffer_cleanup
- msm_framebuffer_iova
- msm_framebuffer_bo
- msm_framebuffer_format
- msm_framebuffer_create
- msm_framebuffer_init
- msm_alloc_stolen_fb
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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
18 struct 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
24 static 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
27 static 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
34 void 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
51
52
53
54
55 int 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
71 void 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
80 uint32_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
88 struct drm_gem_object *msm_framebuffer_bo(struct drm_framebuffer *fb, int plane)
89 {
90 return drm_gem_fb_get_obj(fb, plane);
91 }
92
93 const 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
99 struct 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
124 out_unref:
125 for (i = 0; i < n; i++)
126 drm_gem_object_put_unlocked(bos[i]);
127 return ERR_PTR(ret);
128 }
129
130 static 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
200 fail:
201 kfree(msm_fb);
202
203 return ERR_PTR(ret);
204 }
205
206 struct drm_framebuffer *
207 msm_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
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
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
239
240
241 drm_gem_object_put_unlocked(bo);
242 return ERR_CAST(fb);
243 }
244
245 return fb;
246 }