]> git.karo-electronics.de Git - mv-sheeva.git/blob - drivers/gpu/drm/nouveau/nouveau_fbcon.c
Merge branch 'drm-fixes' of /home/airlied/kernel/linux-2.6 into drm-core-next
[mv-sheeva.git] / drivers / gpu / drm / nouveau / nouveau_fbcon.c
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/sysrq.h>
34 #include <linux/delay.h>
35 #include <linux/fb.h>
36 #include <linux/init.h>
37 #include <linux/screen_info.h>
38 #include <linux/vga_switcheroo.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_fbdev *nfbdev = info->par;
56         struct drm_device *dev = nfbdev->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 || !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                 nouveau_fbcon_gpu_lockup(info);
68                 return 0;
69         }
70
71         BEGIN_RING(chan, 0, 0x0104, 1);
72         OUT_RING(chan, 0);
73         BEGIN_RING(chan, 0, 0x0100, 1);
74         OUT_RING(chan, 0);
75         nouveau_bo_wr32(chan->notifier_bo, chan->m2mf_ntfy + 3, 0xffffffff);
76         FIRE_RING(chan);
77
78         ret = -EBUSY;
79         for (i = 0; i < 100000; i++) {
80                 if (!nouveau_bo_rd32(chan->notifier_bo, chan->m2mf_ntfy + 3)) {
81                         ret = 0;
82                         break;
83                 }
84                 DRM_UDELAY(1);
85         }
86
87         if (ret) {
88                 nouveau_fbcon_gpu_lockup(info);
89                 return 0;
90         }
91
92         chan->accel_done = false;
93         return 0;
94 }
95
96 static struct fb_ops nouveau_fbcon_ops = {
97         .owner = THIS_MODULE,
98         .fb_check_var = drm_fb_helper_check_var,
99         .fb_set_par = drm_fb_helper_set_par,
100         .fb_fillrect = cfb_fillrect,
101         .fb_copyarea = cfb_copyarea,
102         .fb_imageblit = cfb_imageblit,
103         .fb_sync = nouveau_fbcon_sync,
104         .fb_pan_display = drm_fb_helper_pan_display,
105         .fb_blank = drm_fb_helper_blank,
106         .fb_setcmap = drm_fb_helper_setcmap,
107         .fb_debug_enter = drm_fb_helper_debug_enter,
108         .fb_debug_leave = drm_fb_helper_debug_leave,
109 };
110
111 static struct fb_ops nv04_fbcon_ops = {
112         .owner = THIS_MODULE,
113         .fb_check_var = drm_fb_helper_check_var,
114         .fb_set_par = drm_fb_helper_set_par,
115         .fb_fillrect = nv04_fbcon_fillrect,
116         .fb_copyarea = nv04_fbcon_copyarea,
117         .fb_imageblit = nv04_fbcon_imageblit,
118         .fb_sync = nouveau_fbcon_sync,
119         .fb_pan_display = drm_fb_helper_pan_display,
120         .fb_blank = drm_fb_helper_blank,
121         .fb_setcmap = drm_fb_helper_setcmap,
122         .fb_debug_enter = drm_fb_helper_debug_enter,
123         .fb_debug_leave = drm_fb_helper_debug_leave,
124 };
125
126 static struct fb_ops nv50_fbcon_ops = {
127         .owner = THIS_MODULE,
128         .fb_check_var = drm_fb_helper_check_var,
129         .fb_set_par = drm_fb_helper_set_par,
130         .fb_fillrect = nv50_fbcon_fillrect,
131         .fb_copyarea = nv50_fbcon_copyarea,
132         .fb_imageblit = nv50_fbcon_imageblit,
133         .fb_sync = nouveau_fbcon_sync,
134         .fb_pan_display = drm_fb_helper_pan_display,
135         .fb_blank = drm_fb_helper_blank,
136         .fb_setcmap = drm_fb_helper_setcmap,
137         .fb_debug_enter = drm_fb_helper_debug_enter,
138         .fb_debug_leave = drm_fb_helper_debug_leave,
139 };
140
141 static void nouveau_fbcon_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
142                                     u16 blue, int regno)
143 {
144         struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
145
146         nv_crtc->lut.r[regno] = red;
147         nv_crtc->lut.g[regno] = green;
148         nv_crtc->lut.b[regno] = blue;
149 }
150
151 static void nouveau_fbcon_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
152                                     u16 *blue, int regno)
153 {
154         struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
155
156         *red = nv_crtc->lut.r[regno];
157         *green = nv_crtc->lut.g[regno];
158         *blue = nv_crtc->lut.b[regno];
159 }
160
161 static void
162 nouveau_fbcon_zfill(struct drm_device *dev, struct nouveau_fbdev *nfbdev)
163 {
164         struct fb_info *info = nfbdev->helper.fbdev;
165         struct fb_fillrect rect;
166
167         /* Clear the entire fbcon.  The drm will program every connector
168          * with it's preferred mode.  If the sizes differ, one display will
169          * quite likely have garbage around the console.
170          */
171         rect.dx = rect.dy = 0;
172         rect.width = info->var.xres_virtual;
173         rect.height = info->var.yres_virtual;
174         rect.color = 0;
175         rect.rop = ROP_COPY;
176         info->fbops->fb_fillrect(info, &rect);
177 }
178
179 static int
180 nouveau_fbcon_create(struct nouveau_fbdev *nfbdev,
181                      struct drm_fb_helper_surface_size *sizes)
182 {
183         struct drm_device *dev = nfbdev->dev;
184         struct drm_nouveau_private *dev_priv = dev->dev_private;
185         struct fb_info *info;
186         struct drm_framebuffer *fb;
187         struct nouveau_framebuffer *nouveau_fb;
188         struct nouveau_bo *nvbo;
189         struct drm_mode_fb_cmd mode_cmd;
190         struct pci_dev *pdev = dev->pdev;
191         struct device *device = &pdev->dev;
192         int size, ret;
193
194         mode_cmd.width = sizes->surface_width;
195         mode_cmd.height = sizes->surface_height;
196
197         mode_cmd.bpp = sizes->surface_bpp;
198         mode_cmd.pitch = mode_cmd.width * (mode_cmd.bpp >> 3);
199         mode_cmd.pitch = roundup(mode_cmd.pitch, 256);
200         mode_cmd.depth = sizes->surface_depth;
201
202         size = mode_cmd.pitch * mode_cmd.height;
203         size = roundup(size, PAGE_SIZE);
204
205         ret = nouveau_gem_new(dev, dev_priv->channel, size, 0, TTM_PL_FLAG_VRAM,
206                               0, 0x0000, false, true, &nvbo);
207         if (ret) {
208                 NV_ERROR(dev, "failed to allocate framebuffer\n");
209                 goto out;
210         }
211
212         ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM);
213         if (ret) {
214                 NV_ERROR(dev, "failed to pin fb: %d\n", ret);
215                 nouveau_bo_ref(NULL, &nvbo);
216                 goto out;
217         }
218
219         ret = nouveau_bo_map(nvbo);
220         if (ret) {
221                 NV_ERROR(dev, "failed to map fb: %d\n", ret);
222                 nouveau_bo_unpin(nvbo);
223                 nouveau_bo_ref(NULL, &nvbo);
224                 goto out;
225         }
226
227         mutex_lock(&dev->struct_mutex);
228
229         info = framebuffer_alloc(0, device);
230         if (!info) {
231                 ret = -ENOMEM;
232                 goto out_unref;
233         }
234
235         ret = fb_alloc_cmap(&info->cmap, 256, 0);
236         if (ret) {
237                 ret = -ENOMEM;
238                 goto out_unref;
239         }
240
241         info->par = nfbdev;
242
243         nouveau_framebuffer_init(dev, &nfbdev->nouveau_fb, &mode_cmd, nvbo);
244
245         nouveau_fb = &nfbdev->nouveau_fb;
246         fb = &nouveau_fb->base;
247
248         /* setup helper */
249         nfbdev->helper.fb = fb;
250         nfbdev->helper.fbdev = info;
251
252         strcpy(info->fix.id, "nouveaufb");
253         if (nouveau_nofbaccel)
254                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_DISABLED;
255         else
256                 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA |
257                               FBINFO_HWACCEL_FILLRECT |
258                               FBINFO_HWACCEL_IMAGEBLIT;
259         info->flags |= FBINFO_CAN_FORCE_OUTPUT;
260         info->fbops = &nouveau_fbcon_ops;
261         info->fix.smem_start = dev->mode_config.fb_base + nvbo->bo.offset -
262                                dev_priv->vm_vram_base;
263         info->fix.smem_len = size;
264
265         info->screen_base = nvbo_kmap_obj_iovirtual(nouveau_fb->nvbo);
266         info->screen_size = size;
267
268         drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
269         drm_fb_helper_fill_var(info, &nfbdev->helper, sizes->fb_width, sizes->fb_height);
270
271         /* FIXME: we really shouldn't expose mmio space at all */
272         info->fix.mmio_start = pci_resource_start(pdev, 1);
273         info->fix.mmio_len = pci_resource_len(pdev, 1);
274
275         /* Set aperture base/size for vesafb takeover */
276         info->apertures = dev_priv->apertures;
277         if (!info->apertures) {
278                 ret = -ENOMEM;
279                 goto out_unref;
280         }
281
282         info->pixmap.size = 64*1024;
283         info->pixmap.buf_align = 8;
284         info->pixmap.access_align = 32;
285         info->pixmap.flags = FB_PIXMAP_SYSTEM;
286         info->pixmap.scan_align = 1;
287
288         if (dev_priv->channel && !nouveau_nofbaccel) {
289                 switch (dev_priv->card_type) {
290                 case NV_C0:
291                         break;
292                 case NV_50:
293                         nv50_fbcon_accel_init(info);
294                         info->fbops = &nv50_fbcon_ops;
295                         break;
296                 default:
297                         nv04_fbcon_accel_init(info);
298                         info->fbops = &nv04_fbcon_ops;
299                         break;
300                 };
301         }
302
303         nouveau_fbcon_zfill(dev, nfbdev);
304
305         /* To allow resizeing without swapping buffers */
306         NV_INFO(dev, "allocated %dx%d fb: 0x%lx, bo %p\n",
307                                                 nouveau_fb->base.width,
308                                                 nouveau_fb->base.height,
309                                                 nvbo->bo.offset, nvbo);
310
311         mutex_unlock(&dev->struct_mutex);
312         vga_switcheroo_client_fb_set(dev->pdev, info);
313         return 0;
314
315 out_unref:
316         mutex_unlock(&dev->struct_mutex);
317 out:
318         return ret;
319 }
320
321 static int
322 nouveau_fbcon_find_or_create_single(struct drm_fb_helper *helper,
323                                     struct drm_fb_helper_surface_size *sizes)
324 {
325         struct nouveau_fbdev *nfbdev = (struct nouveau_fbdev *)helper;
326         int new_fb = 0;
327         int ret;
328
329         if (!helper->fb) {
330                 ret = nouveau_fbcon_create(nfbdev, sizes);
331                 if (ret)
332                         return ret;
333                 new_fb = 1;
334         }
335         return new_fb;
336 }
337
338 void
339 nouveau_fbcon_output_poll_changed(struct drm_device *dev)
340 {
341         struct drm_nouveau_private *dev_priv = dev->dev_private;
342         drm_fb_helper_hotplug_event(&dev_priv->nfbdev->helper);
343 }
344
345 static int
346 nouveau_fbcon_destroy(struct drm_device *dev, struct nouveau_fbdev *nfbdev)
347 {
348         struct nouveau_framebuffer *nouveau_fb = &nfbdev->nouveau_fb;
349         struct fb_info *info;
350
351         if (nfbdev->helper.fbdev) {
352                 info = nfbdev->helper.fbdev;
353                 unregister_framebuffer(info);
354                 if (info->cmap.len)
355                         fb_dealloc_cmap(&info->cmap);
356                 framebuffer_release(info);
357         }
358
359         if (nouveau_fb->nvbo) {
360                 nouveau_bo_unmap(nouveau_fb->nvbo);
361                 drm_gem_object_unreference_unlocked(nouveau_fb->nvbo->gem);
362                 nouveau_fb->nvbo = NULL;
363         }
364         drm_fb_helper_fini(&nfbdev->helper);
365         drm_framebuffer_cleanup(&nouveau_fb->base);
366         return 0;
367 }
368
369 void nouveau_fbcon_gpu_lockup(struct fb_info *info)
370 {
371         struct nouveau_fbdev *nfbdev = info->par;
372         struct drm_device *dev = nfbdev->dev;
373
374         NV_ERROR(dev, "GPU lockup - switching to software fbcon\n");
375         info->flags |= FBINFO_HWACCEL_DISABLED;
376 }
377
378 static struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
379         .gamma_set = nouveau_fbcon_gamma_set,
380         .gamma_get = nouveau_fbcon_gamma_get,
381         .fb_probe = nouveau_fbcon_find_or_create_single,
382 };
383
384
385 int nouveau_fbcon_init(struct drm_device *dev)
386 {
387         struct drm_nouveau_private *dev_priv = dev->dev_private;
388         struct nouveau_fbdev *nfbdev;
389         int ret;
390
391         nfbdev = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
392         if (!nfbdev)
393                 return -ENOMEM;
394
395         nfbdev->dev = dev;
396         dev_priv->nfbdev = nfbdev;
397         nfbdev->helper.funcs = &nouveau_fbcon_helper_funcs;
398
399         ret = drm_fb_helper_init(dev, &nfbdev->helper,
400                                  nv_two_heads(dev) ? 2 : 1, 4);
401         if (ret) {
402                 kfree(nfbdev);
403                 return ret;
404         }
405
406         drm_fb_helper_single_add_all_connectors(&nfbdev->helper);
407         drm_fb_helper_initial_config(&nfbdev->helper, 32);
408         return 0;
409 }
410
411 void nouveau_fbcon_fini(struct drm_device *dev)
412 {
413         struct drm_nouveau_private *dev_priv = dev->dev_private;
414
415         if (!dev_priv->nfbdev)
416                 return;
417
418         nouveau_fbcon_destroy(dev, dev_priv->nfbdev);
419         kfree(dev_priv->nfbdev);
420         dev_priv->nfbdev = NULL;
421 }
422
423 void nouveau_fbcon_save_disable_accel(struct drm_device *dev)
424 {
425         struct drm_nouveau_private *dev_priv = dev->dev_private;
426
427         dev_priv->nfbdev->saved_flags = dev_priv->nfbdev->helper.fbdev->flags;
428         dev_priv->nfbdev->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
429 }
430
431 void nouveau_fbcon_restore_accel(struct drm_device *dev)
432 {
433         struct drm_nouveau_private *dev_priv = dev->dev_private;
434         dev_priv->nfbdev->helper.fbdev->flags = dev_priv->nfbdev->saved_flags;
435 }
436
437 void nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
438 {
439         struct drm_nouveau_private *dev_priv = dev->dev_private;
440         fb_set_suspend(dev_priv->nfbdev->helper.fbdev, state);
441 }
442
443 void nouveau_fbcon_zfill_all(struct drm_device *dev)
444 {
445         struct drm_nouveau_private *dev_priv = dev->dev_private;
446         nouveau_fbcon_zfill(dev, dev_priv->nfbdev);
447 }