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1 | /* | |
2 | * Copyright © 2007 David Airlie | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a | |
5 | * copy of this software and associated documentation files (the "Software"), | |
6 | * to deal in the Software without restriction, including without limitation | |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
8 | * and/or sell copies of the Software, and to permit persons to whom the | |
9 | * Software is furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice (including the next | |
12 | * paragraph) shall be included in all copies or substantial portions of the | |
13 | * Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | |
21 | * DEALINGS IN THE SOFTWARE. | |
22 | * | |
23 | * Authors: | |
24 | * David Airlie | |
25 | */ | |
26 | /* | |
27 | * Modularization | |
28 | */ | |
29 | ||
30 | #include <linux/module.h> | |
31 | #include <linux/fb.h> | |
32 | ||
33 | #include "drmP.h" | |
34 | #include "drm.h" | |
35 | #include "drm_crtc.h" | |
36 | #include "drm_crtc_helper.h" | |
37 | #include "radeon_drm.h" | |
38 | #include "radeon.h" | |
39 | ||
40 | #include "drm_fb_helper.h" | |
41 | ||
42 | struct radeon_fb_device { | |
43 | struct drm_fb_helper helper; | |
44 | struct radeon_framebuffer *rfb; | |
45 | struct radeon_device *rdev; | |
46 | }; | |
47 | ||
48 | static struct fb_ops radeonfb_ops = { | |
49 | .owner = THIS_MODULE, | |
50 | .fb_check_var = drm_fb_helper_check_var, | |
51 | .fb_set_par = drm_fb_helper_set_par, | |
52 | .fb_setcolreg = drm_fb_helper_setcolreg, | |
53 | .fb_fillrect = cfb_fillrect, | |
54 | .fb_copyarea = cfb_copyarea, | |
55 | .fb_imageblit = cfb_imageblit, | |
56 | .fb_pan_display = drm_fb_helper_pan_display, | |
57 | .fb_blank = drm_fb_helper_blank, | |
58 | .fb_setcmap = drm_fb_helper_setcmap, | |
59 | }; | |
60 | ||
61 | /** | |
62 | * Currently it is assumed that the old framebuffer is reused. | |
63 | * | |
64 | * LOCKING | |
65 | * caller should hold the mode config lock. | |
66 | * | |
67 | */ | |
68 | int radeonfb_resize(struct drm_device *dev, struct drm_crtc *crtc) | |
69 | { | |
70 | struct fb_info *info; | |
71 | struct drm_framebuffer *fb; | |
72 | struct drm_display_mode *mode = crtc->desired_mode; | |
73 | ||
74 | fb = crtc->fb; | |
75 | if (fb == NULL) { | |
76 | return 1; | |
77 | } | |
78 | info = fb->fbdev; | |
79 | if (info == NULL) { | |
80 | return 1; | |
81 | } | |
82 | if (mode == NULL) { | |
83 | return 1; | |
84 | } | |
85 | info->var.xres = mode->hdisplay; | |
86 | info->var.right_margin = mode->hsync_start - mode->hdisplay; | |
87 | info->var.hsync_len = mode->hsync_end - mode->hsync_start; | |
88 | info->var.left_margin = mode->htotal - mode->hsync_end; | |
89 | info->var.yres = mode->vdisplay; | |
90 | info->var.lower_margin = mode->vsync_start - mode->vdisplay; | |
91 | info->var.vsync_len = mode->vsync_end - mode->vsync_start; | |
92 | info->var.upper_margin = mode->vtotal - mode->vsync_end; | |
93 | info->var.pixclock = 10000000 / mode->htotal * 1000 / mode->vtotal * 100; | |
94 | /* avoid overflow */ | |
95 | info->var.pixclock = info->var.pixclock * 1000 / mode->vrefresh; | |
96 | ||
97 | return 0; | |
98 | } | |
99 | EXPORT_SYMBOL(radeonfb_resize); | |
100 | ||
101 | static int radeon_align_pitch(struct radeon_device *rdev, int width, int bpp, bool tiled) | |
102 | { | |
103 | int aligned = width; | |
104 | int align_large = (ASIC_IS_AVIVO(rdev)) || tiled; | |
105 | int pitch_mask = 0; | |
106 | ||
107 | switch (bpp / 8) { | |
108 | case 1: | |
109 | pitch_mask = align_large ? 255 : 127; | |
110 | break; | |
111 | case 2: | |
112 | pitch_mask = align_large ? 127 : 31; | |
113 | break; | |
114 | case 3: | |
115 | case 4: | |
116 | pitch_mask = align_large ? 63 : 15; | |
117 | break; | |
118 | } | |
119 | ||
120 | aligned += pitch_mask; | |
121 | aligned &= ~pitch_mask; | |
122 | return aligned; | |
123 | } | |
124 | ||
125 | static struct drm_fb_helper_funcs radeon_fb_helper_funcs = { | |
126 | .gamma_set = radeon_crtc_fb_gamma_set, | |
127 | .gamma_get = radeon_crtc_fb_gamma_get, | |
128 | }; | |
129 | ||
130 | int radeonfb_create(struct drm_device *dev, | |
131 | uint32_t fb_width, uint32_t fb_height, | |
132 | uint32_t surface_width, uint32_t surface_height, | |
133 | uint32_t surface_depth, uint32_t surface_bpp, | |
134 | struct drm_framebuffer **fb_p) | |
135 | { | |
136 | struct radeon_device *rdev = dev->dev_private; | |
137 | struct fb_info *info; | |
138 | struct radeon_fb_device *rfbdev; | |
139 | struct drm_framebuffer *fb = NULL; | |
140 | struct radeon_framebuffer *rfb; | |
141 | struct drm_mode_fb_cmd mode_cmd; | |
142 | struct drm_gem_object *gobj = NULL; | |
143 | struct radeon_object *robj = NULL; | |
144 | struct device *device = &rdev->pdev->dev; | |
145 | int size, aligned_size, ret; | |
146 | u64 fb_gpuaddr; | |
147 | void *fbptr = NULL; | |
148 | unsigned long tmp; | |
149 | bool fb_tiled = false; /* useful for testing */ | |
150 | u32 tiling_flags = 0; | |
151 | int crtc_count; | |
152 | ||
153 | mode_cmd.width = surface_width; | |
154 | mode_cmd.height = surface_height; | |
155 | ||
156 | /* avivo can't scanout real 24bpp */ | |
157 | if ((surface_bpp == 24) && ASIC_IS_AVIVO(rdev)) | |
158 | surface_bpp = 32; | |
159 | ||
160 | mode_cmd.bpp = surface_bpp; | |
161 | /* need to align pitch with crtc limits */ | |
162 | mode_cmd.pitch = radeon_align_pitch(rdev, mode_cmd.width, mode_cmd.bpp, fb_tiled) * ((mode_cmd.bpp + 1) / 8); | |
163 | mode_cmd.depth = surface_depth; | |
164 | ||
165 | size = mode_cmd.pitch * mode_cmd.height; | |
166 | aligned_size = ALIGN(size, PAGE_SIZE); | |
167 | ||
168 | ret = radeon_gem_object_create(rdev, aligned_size, 0, | |
169 | RADEON_GEM_DOMAIN_VRAM, | |
170 | false, ttm_bo_type_kernel, | |
171 | false, &gobj); | |
172 | if (ret) { | |
173 | printk(KERN_ERR "failed to allocate framebuffer (%d %d)\n", | |
174 | surface_width, surface_height); | |
175 | ret = -ENOMEM; | |
176 | goto out; | |
177 | } | |
178 | robj = gobj->driver_private; | |
179 | ||
180 | if (fb_tiled) | |
181 | tiling_flags = RADEON_TILING_MACRO; | |
182 | ||
183 | #ifdef __BIG_ENDIAN | |
184 | switch (mode_cmd.bpp) { | |
185 | case 32: | |
186 | tiling_flags |= RADEON_TILING_SWAP_32BIT; | |
187 | break; | |
188 | case 16: | |
189 | tiling_flags |= RADEON_TILING_SWAP_16BIT; | |
190 | default: | |
191 | break; | |
192 | } | |
193 | #endif | |
194 | ||
195 | if (tiling_flags) | |
196 | radeon_object_set_tiling_flags(robj, tiling_flags | RADEON_TILING_SURFACE, mode_cmd.pitch); | |
197 | mutex_lock(&rdev->ddev->struct_mutex); | |
198 | fb = radeon_framebuffer_create(rdev->ddev, &mode_cmd, gobj); | |
199 | if (fb == NULL) { | |
200 | DRM_ERROR("failed to allocate fb.\n"); | |
201 | ret = -ENOMEM; | |
202 | goto out_unref; | |
203 | } | |
204 | ret = radeon_object_pin(robj, RADEON_GEM_DOMAIN_VRAM, &fb_gpuaddr); | |
205 | if (ret) { | |
206 | printk(KERN_ERR "failed to pin framebuffer\n"); | |
207 | ret = -ENOMEM; | |
208 | goto out_unref; | |
209 | } | |
210 | ||
211 | list_add(&fb->filp_head, &rdev->ddev->mode_config.fb_kernel_list); | |
212 | ||
213 | *fb_p = fb; | |
214 | rfb = to_radeon_framebuffer(fb); | |
215 | rdev->fbdev_rfb = rfb; | |
216 | rdev->fbdev_robj = robj; | |
217 | ||
218 | info = framebuffer_alloc(sizeof(struct radeon_fb_device), device); | |
219 | if (info == NULL) { | |
220 | ret = -ENOMEM; | |
221 | goto out_unref; | |
222 | } | |
223 | ||
224 | rdev->fbdev_info = info; | |
225 | rfbdev = info->par; | |
226 | rfbdev->helper.funcs = &radeon_fb_helper_funcs; | |
227 | rfbdev->helper.dev = dev; | |
228 | if (rdev->flags & RADEON_SINGLE_CRTC) | |
229 | crtc_count = 1; | |
230 | else | |
231 | crtc_count = 2; | |
232 | ret = drm_fb_helper_init_crtc_count(&rfbdev->helper, crtc_count, | |
233 | RADEONFB_CONN_LIMIT); | |
234 | if (ret) | |
235 | goto out_unref; | |
236 | ||
237 | if (fb_tiled) | |
238 | radeon_object_check_tiling(robj, 0, 0); | |
239 | ||
240 | ret = radeon_object_kmap(robj, &fbptr); | |
241 | if (ret) { | |
242 | goto out_unref; | |
243 | } | |
244 | ||
245 | memset_io(fbptr, 0, aligned_size); | |
246 | ||
247 | strcpy(info->fix.id, "radeondrmfb"); | |
248 | ||
249 | drm_fb_helper_fill_fix(info, fb->pitch, fb->depth); | |
250 | ||
251 | info->flags = FBINFO_DEFAULT; | |
252 | info->fbops = &radeonfb_ops; | |
253 | ||
254 | tmp = fb_gpuaddr - rdev->mc.vram_location; | |
255 | info->fix.smem_start = rdev->mc.aper_base + tmp; | |
256 | info->fix.smem_len = size; | |
257 | info->screen_base = fbptr; | |
258 | info->screen_size = size; | |
259 | ||
260 | drm_fb_helper_fill_var(info, fb, fb_width, fb_height); | |
261 | ||
262 | /* setup aperture base/size for vesafb takeover */ | |
263 | info->aperture_base = rdev->ddev->mode_config.fb_base; | |
264 | info->aperture_size = rdev->mc.real_vram_size; | |
265 | ||
266 | info->fix.mmio_start = 0; | |
267 | info->fix.mmio_len = 0; | |
268 | info->pixmap.size = 64*1024; | |
269 | info->pixmap.buf_align = 8; | |
270 | info->pixmap.access_align = 32; | |
271 | info->pixmap.flags = FB_PIXMAP_SYSTEM; | |
272 | info->pixmap.scan_align = 1; | |
273 | if (info->screen_base == NULL) { | |
274 | ret = -ENOSPC; | |
275 | goto out_unref; | |
276 | } | |
277 | DRM_INFO("fb mappable at 0x%lX\n", info->fix.smem_start); | |
278 | DRM_INFO("vram apper at 0x%lX\n", (unsigned long)rdev->mc.aper_base); | |
279 | DRM_INFO("size %lu\n", (unsigned long)size); | |
280 | DRM_INFO("fb depth is %d\n", fb->depth); | |
281 | DRM_INFO(" pitch is %d\n", fb->pitch); | |
282 | ||
283 | fb->fbdev = info; | |
284 | rfbdev->rfb = rfb; | |
285 | rfbdev->rdev = rdev; | |
286 | ||
287 | mutex_unlock(&rdev->ddev->struct_mutex); | |
288 | return 0; | |
289 | ||
290 | out_unref: | |
291 | if (robj) { | |
292 | radeon_object_kunmap(robj); | |
293 | } | |
294 | if (fb && ret) { | |
295 | list_del(&fb->filp_head); | |
296 | drm_gem_object_unreference(gobj); | |
297 | drm_framebuffer_cleanup(fb); | |
298 | kfree(fb); | |
299 | } | |
300 | drm_gem_object_unreference(gobj); | |
301 | mutex_unlock(&rdev->ddev->struct_mutex); | |
302 | out: | |
303 | return ret; | |
304 | } | |
305 | ||
306 | static char *mode_option; | |
307 | int radeon_parse_options(char *options) | |
308 | { | |
309 | char *this_opt; | |
310 | ||
311 | if (!options || !*options) | |
312 | return 0; | |
313 | ||
314 | while ((this_opt = strsep(&options, ",")) != NULL) { | |
315 | if (!*this_opt) | |
316 | continue; | |
317 | mode_option = this_opt; | |
318 | } | |
319 | return 0; | |
320 | } | |
321 | ||
322 | int radeonfb_probe(struct drm_device *dev) | |
323 | { | |
324 | return drm_fb_helper_single_fb_probe(dev, 32, &radeonfb_create); | |
325 | } | |
326 | ||
327 | int radeonfb_remove(struct drm_device *dev, struct drm_framebuffer *fb) | |
328 | { | |
329 | struct fb_info *info; | |
330 | struct radeon_framebuffer *rfb = to_radeon_framebuffer(fb); | |
331 | struct radeon_object *robj; | |
332 | ||
333 | if (!fb) { | |
334 | return -EINVAL; | |
335 | } | |
336 | info = fb->fbdev; | |
337 | if (info) { | |
338 | struct radeon_fb_device *rfbdev = info->par; | |
339 | robj = rfb->obj->driver_private; | |
340 | unregister_framebuffer(info); | |
341 | radeon_object_kunmap(robj); | |
342 | radeon_object_unpin(robj); | |
343 | drm_fb_helper_free(&rfbdev->helper); | |
344 | framebuffer_release(info); | |
345 | } | |
346 | ||
347 | printk(KERN_INFO "unregistered panic notifier\n"); | |
348 | ||
349 | return 0; | |
350 | } | |
351 | EXPORT_SYMBOL(radeonfb_remove); | |
352 | MODULE_LICENSE("GPL"); |