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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 | #include <linux/module.h> | |
28 | #include <linux/kernel.h> | |
29 | #include <linux/errno.h> | |
30 | #include <linux/string.h> | |
31 | #include <linux/mm.h> | |
32 | #include <linux/tty.h> | |
33 | #include <linux/slab.h> | |
34 | #include <linux/sysrq.h> | |
35 | #include <linux/delay.h> | |
36 | #include <linux/fb.h> | |
37 | #include <linux/init.h> | |
38 | #include <linux/screen_info.h> | |
39 | ||
40 | #include "drmP.h" | |
41 | #include "drm.h" | |
42 | #include "drm_crtc.h" | |
43 | #include "drm_crtc_helper.h" | |
44 | #include "drm_fb_helper.h" | |
45 | #include "nouveau_drv.h" | |
46 | #include "nouveau_drm.h" | |
47 | #include "nouveau_crtc.h" | |
48 | #include "nouveau_fb.h" | |
49 | #include "nouveau_fbcon.h" | |
50 | #include "nouveau_dma.h" | |
51 | ||
52 | static int | |
53 | nouveau_fbcon_sync(struct fb_info *info) | |
54 | { | |
55 | struct nouveau_fbcon_par *par = info->par; | |
56 | struct drm_device *dev = par->dev; | |
57 | struct drm_nouveau_private *dev_priv = dev->dev_private; | |
58 | struct nouveau_channel *chan = dev_priv->channel; | |
59 | int ret, i; | |
60 | ||
61 | if (!chan->accel_done || | |
62 | info->state != FBINFO_STATE_RUNNING || | |
63 | info->flags & FBINFO_HWACCEL_DISABLED) | |
64 | return 0; | |
65 | ||
66 | if (RING_SPACE(chan, 4)) { | |
67 | NV_ERROR(dev, "GPU lockup - switching to software fbcon\n"); | |
68 | info->flags |= FBINFO_HWACCEL_DISABLED; | |
69 | return 0; | |
70 | } | |
71 | ||
72 | BEGIN_RING(chan, 0, 0x0104, 1); | |
73 | OUT_RING(chan, 0); | |
74 | BEGIN_RING(chan, 0, 0x0100, 1); | |
75 | OUT_RING(chan, 0); | |
76 | nouveau_bo_wr32(chan->notifier_bo, chan->m2mf_ntfy + 3, 0xffffffff); | |
77 | FIRE_RING(chan); | |
78 | ||
79 | ret = -EBUSY; | |
80 | for (i = 0; i < 100000; i++) { | |
81 | if (!nouveau_bo_rd32(chan->notifier_bo, chan->m2mf_ntfy + 3)) { | |
82 | ret = 0; | |
83 | break; | |
84 | } | |
85 | DRM_UDELAY(1); | |
86 | } | |
87 | ||
88 | if (ret) { | |
89 | NV_ERROR(dev, "GPU lockup - switching to software fbcon\n"); | |
90 | info->flags |= FBINFO_HWACCEL_DISABLED; | |
91 | return 0; | |
92 | } | |
93 | ||
94 | chan->accel_done = false; | |
95 | return 0; | |
96 | } | |
97 | ||
98 | static struct fb_ops nouveau_fbcon_ops = { | |
99 | .owner = THIS_MODULE, | |
100 | .fb_check_var = drm_fb_helper_check_var, | |
101 | .fb_set_par = drm_fb_helper_set_par, | |
102 | .fb_setcolreg = drm_fb_helper_setcolreg, | |
103 | .fb_fillrect = cfb_fillrect, | |
104 | .fb_copyarea = cfb_copyarea, | |
105 | .fb_imageblit = cfb_imageblit, | |
106 | .fb_sync = nouveau_fbcon_sync, | |
107 | .fb_pan_display = drm_fb_helper_pan_display, | |
108 | .fb_blank = drm_fb_helper_blank, | |
109 | .fb_setcmap = drm_fb_helper_setcmap, | |
110 | }; | |
111 | ||
112 | static void nouveau_fbcon_gamma_set(struct drm_crtc *crtc, u16 red, u16 green, | |
113 | u16 blue, int regno) | |
114 | { | |
115 | struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc); | |
116 | ||
117 | nv_crtc->lut.r[regno] = red; | |
118 | nv_crtc->lut.g[regno] = green; | |
119 | nv_crtc->lut.b[regno] = blue; | |
120 | } | |
121 | ||
122 | static void nouveau_fbcon_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green, | |
123 | u16 *blue, int regno) | |
124 | { | |
125 | struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc); | |
126 | ||
127 | *red = nv_crtc->lut.r[regno]; | |
128 | *green = nv_crtc->lut.g[regno]; | |
129 | *blue = nv_crtc->lut.b[regno]; | |
130 | } | |
131 | ||
132 | static struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = { | |
133 | .gamma_set = nouveau_fbcon_gamma_set, | |
134 | .gamma_get = nouveau_fbcon_gamma_get | |
135 | }; | |
136 | ||
137 | #if defined(__i386__) || defined(__x86_64__) | |
138 | static bool | |
139 | nouveau_fbcon_has_vesafb_or_efifb(struct drm_device *dev) | |
140 | { | |
141 | struct pci_dev *pdev = dev->pdev; | |
142 | int ramin; | |
143 | ||
144 | if (screen_info.orig_video_isVGA != VIDEO_TYPE_VLFB && | |
145 | screen_info.orig_video_isVGA != VIDEO_TYPE_EFI) | |
146 | return false; | |
147 | ||
148 | if (screen_info.lfb_base < pci_resource_start(pdev, 1)) | |
149 | goto not_fb; | |
150 | ||
151 | if (screen_info.lfb_base + screen_info.lfb_size >= | |
152 | pci_resource_start(pdev, 1) + pci_resource_len(pdev, 1)) | |
153 | goto not_fb; | |
154 | ||
155 | return true; | |
156 | not_fb: | |
157 | ramin = 2; | |
158 | if (pci_resource_len(pdev, ramin) == 0) { | |
159 | ramin = 3; | |
160 | if (pci_resource_len(pdev, ramin) == 0) | |
161 | return false; | |
162 | } | |
163 | ||
164 | if (screen_info.lfb_base < pci_resource_start(pdev, ramin)) | |
165 | return false; | |
166 | ||
167 | if (screen_info.lfb_base + screen_info.lfb_size >= | |
168 | pci_resource_start(pdev, ramin) + pci_resource_len(pdev, ramin)) | |
169 | return false; | |
170 | ||
171 | return true; | |
172 | } | |
173 | #endif | |
174 | ||
175 | void | |
176 | nouveau_fbcon_zfill(struct drm_device *dev) | |
177 | { | |
178 | struct drm_nouveau_private *dev_priv = dev->dev_private; | |
179 | struct fb_info *info = dev_priv->fbdev_info; | |
180 | struct fb_fillrect rect; | |
181 | ||
182 | /* Clear the entire fbcon. The drm will program every connector | |
183 | * with it's preferred mode. If the sizes differ, one display will | |
184 | * quite likely have garbage around the console. | |
185 | */ | |
186 | rect.dx = rect.dy = 0; | |
187 | rect.width = info->var.xres_virtual; | |
188 | rect.height = info->var.yres_virtual; | |
189 | rect.color = 0; | |
190 | rect.rop = ROP_COPY; | |
191 | info->fbops->fb_fillrect(info, &rect); | |
192 | } | |
193 | ||
194 | static int | |
195 | nouveau_fbcon_create(struct drm_device *dev, uint32_t fb_width, | |
196 | uint32_t fb_height, uint32_t surface_width, | |
197 | uint32_t surface_height, uint32_t surface_depth, | |
198 | uint32_t surface_bpp, struct drm_framebuffer **pfb) | |
199 | { | |
200 | struct drm_nouveau_private *dev_priv = dev->dev_private; | |
201 | struct fb_info *info; | |
202 | struct nouveau_fbcon_par *par; | |
203 | struct drm_framebuffer *fb; | |
204 | struct nouveau_framebuffer *nouveau_fb; | |
205 | struct nouveau_bo *nvbo; | |
206 | struct drm_mode_fb_cmd mode_cmd; | |
207 | struct device *device = &dev->pdev->dev; | |
208 | int size, ret; | |
209 | ||
210 | mode_cmd.width = surface_width; | |
211 | mode_cmd.height = surface_height; | |
212 | ||
213 | mode_cmd.bpp = surface_bpp; | |
214 | mode_cmd.pitch = mode_cmd.width * (mode_cmd.bpp >> 3); | |
215 | mode_cmd.pitch = ALIGN(mode_cmd.pitch, 256); | |
216 | mode_cmd.depth = surface_depth; | |
217 | ||
218 | size = mode_cmd.pitch * mode_cmd.height; | |
219 | size = ALIGN(size, PAGE_SIZE); | |
220 | ||
221 | ret = nouveau_gem_new(dev, dev_priv->channel, size, 0, TTM_PL_FLAG_VRAM, | |
222 | 0, 0x0000, false, true, &nvbo); | |
223 | if (ret) { | |
224 | NV_ERROR(dev, "failed to allocate framebuffer\n"); | |
225 | goto out; | |
226 | } | |
227 | ||
228 | ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM); | |
229 | if (ret) { | |
230 | NV_ERROR(dev, "failed to pin fb: %d\n", ret); | |
231 | nouveau_bo_ref(NULL, &nvbo); | |
232 | goto out; | |
233 | } | |
234 | ||
235 | ret = nouveau_bo_map(nvbo); | |
236 | if (ret) { | |
237 | NV_ERROR(dev, "failed to map fb: %d\n", ret); | |
238 | nouveau_bo_unpin(nvbo); | |
239 | nouveau_bo_ref(NULL, &nvbo); | |
240 | goto out; | |
241 | } | |
242 | ||
243 | mutex_lock(&dev->struct_mutex); | |
244 | ||
245 | fb = nouveau_framebuffer_create(dev, nvbo, &mode_cmd); | |
246 | if (!fb) { | |
247 | ret = -ENOMEM; | |
248 | NV_ERROR(dev, "failed to allocate fb.\n"); | |
249 | goto out_unref; | |
250 | } | |
251 | ||
252 | list_add(&fb->filp_head, &dev->mode_config.fb_kernel_list); | |
253 | ||
254 | nouveau_fb = nouveau_framebuffer(fb); | |
255 | *pfb = fb; | |
256 | ||
257 | info = framebuffer_alloc(sizeof(struct nouveau_fbcon_par), device); | |
258 | if (!info) { | |
259 | ret = -ENOMEM; | |
260 | goto out_unref; | |
261 | } | |
262 | ||
263 | par = info->par; | |
264 | par->helper.funcs = &nouveau_fbcon_helper_funcs; | |
265 | par->helper.dev = dev; | |
266 | ret = drm_fb_helper_init_crtc_count(&par->helper, 2, 4); | |
267 | if (ret) | |
268 | goto out_unref; | |
269 | dev_priv->fbdev_info = info; | |
270 | ||
271 | strcpy(info->fix.id, "nouveaufb"); | |
272 | info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA | | |
273 | FBINFO_HWACCEL_FILLRECT | FBINFO_HWACCEL_IMAGEBLIT; | |
274 | info->fbops = &nouveau_fbcon_ops; | |
275 | info->fix.smem_start = dev->mode_config.fb_base + nvbo->bo.offset - | |
276 | dev_priv->vm_vram_base; | |
277 | info->fix.smem_len = size; | |
278 | ||
279 | info->screen_base = nvbo_kmap_obj_iovirtual(nouveau_fb->nvbo); | |
280 | info->screen_size = size; | |
281 | ||
282 | drm_fb_helper_fill_fix(info, fb->pitch, fb->depth); | |
283 | drm_fb_helper_fill_var(info, fb, fb_width, fb_height); | |
284 | ||
285 | /* FIXME: we really shouldn't expose mmio space at all */ | |
286 | info->fix.mmio_start = pci_resource_start(dev->pdev, 1); | |
287 | info->fix.mmio_len = pci_resource_len(dev->pdev, 1); | |
288 | ||
289 | /* Set aperture base/size for vesafb takeover */ | |
290 | #if defined(__i386__) || defined(__x86_64__) | |
291 | if (nouveau_fbcon_has_vesafb_or_efifb(dev)) { | |
292 | /* Some NVIDIA VBIOS' are stupid and decide to put the | |
293 | * framebuffer in the middle of the PRAMIN BAR for | |
294 | * whatever reason. We need to know the exact lfb_base | |
295 | * to get vesafb kicked off, and the only reliable way | |
296 | * we have left is to find out lfb_base the same way | |
297 | * vesafb did. | |
298 | */ | |
299 | info->aperture_base = screen_info.lfb_base; | |
300 | info->aperture_size = screen_info.lfb_size; | |
301 | if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB) | |
302 | info->aperture_size *= 65536; | |
303 | } else | |
304 | #endif | |
305 | { | |
306 | info->aperture_base = info->fix.mmio_start; | |
307 | info->aperture_size = info->fix.mmio_len; | |
308 | } | |
309 | ||
310 | info->pixmap.size = 64*1024; | |
311 | info->pixmap.buf_align = 8; | |
312 | info->pixmap.access_align = 32; | |
313 | info->pixmap.flags = FB_PIXMAP_SYSTEM; | |
314 | info->pixmap.scan_align = 1; | |
315 | ||
316 | fb->fbdev = info; | |
317 | ||
318 | par->nouveau_fb = nouveau_fb; | |
319 | par->dev = dev; | |
320 | ||
321 | switch (dev_priv->card_type) { | |
322 | case NV_50: | |
323 | nv50_fbcon_accel_init(info); | |
324 | break; | |
325 | default: | |
326 | nv04_fbcon_accel_init(info); | |
327 | break; | |
328 | }; | |
329 | ||
330 | nouveau_fbcon_zfill(dev); | |
331 | ||
332 | /* To allow resizeing without swapping buffers */ | |
333 | NV_INFO(dev, "allocated %dx%d fb: 0x%lx, bo %p\n", | |
334 | nouveau_fb->base.width, | |
335 | nouveau_fb->base.height, | |
336 | nvbo->bo.offset, nvbo); | |
337 | ||
338 | mutex_unlock(&dev->struct_mutex); | |
339 | return 0; | |
340 | ||
341 | out_unref: | |
342 | mutex_unlock(&dev->struct_mutex); | |
343 | out: | |
344 | return ret; | |
345 | } | |
346 | ||
347 | int | |
348 | nouveau_fbcon_probe(struct drm_device *dev) | |
349 | { | |
ef2bb506 | 350 | NV_DEBUG_KMS(dev, "\n"); |
6ee73861 BS |
351 | |
352 | return drm_fb_helper_single_fb_probe(dev, 32, nouveau_fbcon_create); | |
353 | } | |
354 | ||
355 | int | |
356 | nouveau_fbcon_remove(struct drm_device *dev, struct drm_framebuffer *fb) | |
357 | { | |
358 | struct nouveau_framebuffer *nouveau_fb = nouveau_framebuffer(fb); | |
359 | struct fb_info *info; | |
360 | ||
361 | if (!fb) | |
362 | return -EINVAL; | |
363 | ||
364 | info = fb->fbdev; | |
365 | if (info) { | |
366 | struct nouveau_fbcon_par *par = info->par; | |
367 | ||
368 | unregister_framebuffer(info); | |
369 | nouveau_bo_unmap(nouveau_fb->nvbo); | |
370 | mutex_lock(&dev->struct_mutex); | |
371 | drm_gem_object_unreference(nouveau_fb->nvbo->gem); | |
372 | nouveau_fb->nvbo = NULL; | |
373 | mutex_unlock(&dev->struct_mutex); | |
374 | if (par) | |
375 | drm_fb_helper_free(&par->helper); | |
376 | framebuffer_release(info); | |
377 | } | |
378 | ||
379 | return 0; | |
380 | } |