Linux 2.6.33-rc6
[cris-mirror.git] / drivers / gpu / drm / nouveau / nouveau_fbcon.c
blob0b05c869e0e7644c787b1abb54252f0351fb1f98
1 /*
2 * Copyright © 2007 David Airlie
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:
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.
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.
23 * Authors:
24 * David Airlie
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>
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"
52 static int
53 nouveau_fbcon_sync(struct fb_info *info)
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;
61 if (!chan || !chan->accel_done ||
62 info->state != FBINFO_STATE_RUNNING ||
63 info->flags & FBINFO_HWACCEL_DISABLED)
64 return 0;
66 if (RING_SPACE(chan, 4)) {
67 nouveau_fbcon_gpu_lockup(info);
68 return 0;
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);
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;
84 DRM_UDELAY(1);
87 if (ret) {
88 nouveau_fbcon_gpu_lockup(info);
89 return 0;
92 chan->accel_done = false;
93 return 0;
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_setcolreg = drm_fb_helper_setcolreg,
101 .fb_fillrect = cfb_fillrect,
102 .fb_copyarea = cfb_copyarea,
103 .fb_imageblit = cfb_imageblit,
104 .fb_sync = nouveau_fbcon_sync,
105 .fb_pan_display = drm_fb_helper_pan_display,
106 .fb_blank = drm_fb_helper_blank,
107 .fb_setcmap = drm_fb_helper_setcmap,
110 static void nouveau_fbcon_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
111 u16 blue, int regno)
113 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
115 nv_crtc->lut.r[regno] = red;
116 nv_crtc->lut.g[regno] = green;
117 nv_crtc->lut.b[regno] = blue;
120 static void nouveau_fbcon_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
121 u16 *blue, int regno)
123 struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
125 *red = nv_crtc->lut.r[regno];
126 *green = nv_crtc->lut.g[regno];
127 *blue = nv_crtc->lut.b[regno];
130 static struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
131 .gamma_set = nouveau_fbcon_gamma_set,
132 .gamma_get = nouveau_fbcon_gamma_get
135 #if defined(__i386__) || defined(__x86_64__)
136 static bool
137 nouveau_fbcon_has_vesafb_or_efifb(struct drm_device *dev)
139 struct pci_dev *pdev = dev->pdev;
140 int ramin;
142 if (screen_info.orig_video_isVGA != VIDEO_TYPE_VLFB &&
143 screen_info.orig_video_isVGA != VIDEO_TYPE_EFI)
144 return false;
146 if (screen_info.lfb_base < pci_resource_start(pdev, 1))
147 goto not_fb;
149 if (screen_info.lfb_base + screen_info.lfb_size >=
150 pci_resource_start(pdev, 1) + pci_resource_len(pdev, 1))
151 goto not_fb;
153 return true;
154 not_fb:
155 ramin = 2;
156 if (pci_resource_len(pdev, ramin) == 0) {
157 ramin = 3;
158 if (pci_resource_len(pdev, ramin) == 0)
159 return false;
162 if (screen_info.lfb_base < pci_resource_start(pdev, ramin))
163 return false;
165 if (screen_info.lfb_base + screen_info.lfb_size >=
166 pci_resource_start(pdev, ramin) + pci_resource_len(pdev, ramin))
167 return false;
169 return true;
171 #endif
173 void
174 nouveau_fbcon_zfill(struct drm_device *dev)
176 struct drm_nouveau_private *dev_priv = dev->dev_private;
177 struct fb_info *info = dev_priv->fbdev_info;
178 struct fb_fillrect rect;
180 /* Clear the entire fbcon. The drm will program every connector
181 * with it's preferred mode. If the sizes differ, one display will
182 * quite likely have garbage around the console.
184 rect.dx = rect.dy = 0;
185 rect.width = info->var.xres_virtual;
186 rect.height = info->var.yres_virtual;
187 rect.color = 0;
188 rect.rop = ROP_COPY;
189 info->fbops->fb_fillrect(info, &rect);
192 static int
193 nouveau_fbcon_create(struct drm_device *dev, uint32_t fb_width,
194 uint32_t fb_height, uint32_t surface_width,
195 uint32_t surface_height, uint32_t surface_depth,
196 uint32_t surface_bpp, struct drm_framebuffer **pfb)
198 struct drm_nouveau_private *dev_priv = dev->dev_private;
199 struct fb_info *info;
200 struct nouveau_fbcon_par *par;
201 struct drm_framebuffer *fb;
202 struct nouveau_framebuffer *nouveau_fb;
203 struct nouveau_bo *nvbo;
204 struct drm_mode_fb_cmd mode_cmd;
205 struct device *device = &dev->pdev->dev;
206 int size, ret;
208 mode_cmd.width = surface_width;
209 mode_cmd.height = surface_height;
211 mode_cmd.bpp = surface_bpp;
212 mode_cmd.pitch = mode_cmd.width * (mode_cmd.bpp >> 3);
213 mode_cmd.pitch = roundup(mode_cmd.pitch, 256);
214 mode_cmd.depth = surface_depth;
216 size = mode_cmd.pitch * mode_cmd.height;
217 size = roundup(size, PAGE_SIZE);
219 ret = nouveau_gem_new(dev, dev_priv->channel, size, 0, TTM_PL_FLAG_VRAM,
220 0, 0x0000, false, true, &nvbo);
221 if (ret) {
222 NV_ERROR(dev, "failed to allocate framebuffer\n");
223 goto out;
226 ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM);
227 if (ret) {
228 NV_ERROR(dev, "failed to pin fb: %d\n", ret);
229 nouveau_bo_ref(NULL, &nvbo);
230 goto out;
233 ret = nouveau_bo_map(nvbo);
234 if (ret) {
235 NV_ERROR(dev, "failed to map fb: %d\n", ret);
236 nouveau_bo_unpin(nvbo);
237 nouveau_bo_ref(NULL, &nvbo);
238 goto out;
241 mutex_lock(&dev->struct_mutex);
243 fb = nouveau_framebuffer_create(dev, nvbo, &mode_cmd);
244 if (!fb) {
245 ret = -ENOMEM;
246 NV_ERROR(dev, "failed to allocate fb.\n");
247 goto out_unref;
250 list_add(&fb->filp_head, &dev->mode_config.fb_kernel_list);
252 nouveau_fb = nouveau_framebuffer(fb);
253 *pfb = fb;
255 info = framebuffer_alloc(sizeof(struct nouveau_fbcon_par), device);
256 if (!info) {
257 ret = -ENOMEM;
258 goto out_unref;
261 par = info->par;
262 par->helper.funcs = &nouveau_fbcon_helper_funcs;
263 par->helper.dev = dev;
264 ret = drm_fb_helper_init_crtc_count(&par->helper, 2, 4);
265 if (ret)
266 goto out_unref;
267 dev_priv->fbdev_info = info;
269 strcpy(info->fix.id, "nouveaufb");
270 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA |
271 FBINFO_HWACCEL_FILLRECT | FBINFO_HWACCEL_IMAGEBLIT;
272 info->fbops = &nouveau_fbcon_ops;
273 info->fix.smem_start = dev->mode_config.fb_base + nvbo->bo.offset -
274 dev_priv->vm_vram_base;
275 info->fix.smem_len = size;
277 info->screen_base = nvbo_kmap_obj_iovirtual(nouveau_fb->nvbo);
278 info->screen_size = size;
280 drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
281 drm_fb_helper_fill_var(info, fb, fb_width, fb_height);
283 /* FIXME: we really shouldn't expose mmio space at all */
284 info->fix.mmio_start = pci_resource_start(dev->pdev, 1);
285 info->fix.mmio_len = pci_resource_len(dev->pdev, 1);
287 /* Set aperture base/size for vesafb takeover */
288 #if defined(__i386__) || defined(__x86_64__)
289 if (nouveau_fbcon_has_vesafb_or_efifb(dev)) {
290 /* Some NVIDIA VBIOS' are stupid and decide to put the
291 * framebuffer in the middle of the PRAMIN BAR for
292 * whatever reason. We need to know the exact lfb_base
293 * to get vesafb kicked off, and the only reliable way
294 * we have left is to find out lfb_base the same way
295 * vesafb did.
297 info->aperture_base = screen_info.lfb_base;
298 info->aperture_size = screen_info.lfb_size;
299 if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB)
300 info->aperture_size *= 65536;
301 } else
302 #endif
304 info->aperture_base = info->fix.mmio_start;
305 info->aperture_size = info->fix.mmio_len;
308 info->pixmap.size = 64*1024;
309 info->pixmap.buf_align = 8;
310 info->pixmap.access_align = 32;
311 info->pixmap.flags = FB_PIXMAP_SYSTEM;
312 info->pixmap.scan_align = 1;
314 fb->fbdev = info;
316 par->nouveau_fb = nouveau_fb;
317 par->dev = dev;
319 if (dev_priv->channel) {
320 switch (dev_priv->card_type) {
321 case NV_50:
322 nv50_fbcon_accel_init(info);
323 break;
324 default:
325 nv04_fbcon_accel_init(info);
326 break;
330 nouveau_fbcon_zfill(dev);
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);
338 mutex_unlock(&dev->struct_mutex);
339 return 0;
341 out_unref:
342 mutex_unlock(&dev->struct_mutex);
343 out:
344 return ret;
348 nouveau_fbcon_probe(struct drm_device *dev)
350 NV_DEBUG_KMS(dev, "\n");
352 return drm_fb_helper_single_fb_probe(dev, 32, nouveau_fbcon_create);
356 nouveau_fbcon_remove(struct drm_device *dev, struct drm_framebuffer *fb)
358 struct nouveau_framebuffer *nouveau_fb = nouveau_framebuffer(fb);
359 struct fb_info *info;
361 if (!fb)
362 return -EINVAL;
364 info = fb->fbdev;
365 if (info) {
366 struct nouveau_fbcon_par *par = info->par;
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);
379 return 0;
382 void nouveau_fbcon_gpu_lockup(struct fb_info *info)
384 struct nouveau_fbcon_par *par = info->par;
385 struct drm_device *dev = par->dev;
387 NV_ERROR(dev, "GPU lockup - switching to software fbcon\n");
388 info->flags |= FBINFO_HWACCEL_DISABLED;