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79e53945 JB |
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 | ||
39 | #include "drmP.h" | |
40 | #include "drm.h" | |
41 | #include "drm_crtc.h" | |
785b93ef | 42 | #include "drm_fb_helper.h" |
79e53945 JB |
43 | #include "intel_drv.h" |
44 | #include "i915_drm.h" | |
45 | #include "i915_drv.h" | |
46 | ||
47 | struct intelfb_par { | |
785b93ef | 48 | struct drm_fb_helper helper; |
79e53945 | 49 | struct intel_framebuffer *intel_fb; |
785b93ef | 50 | struct drm_display_mode *our_mode; |
79e53945 JB |
51 | }; |
52 | ||
79e53945 JB |
53 | static struct fb_ops intelfb_ops = { |
54 | .owner = THIS_MODULE, | |
785b93ef DA |
55 | .fb_check_var = drm_fb_helper_check_var, |
56 | .fb_set_par = drm_fb_helper_set_par, | |
57 | .fb_setcolreg = drm_fb_helper_setcolreg, | |
79e53945 JB |
58 | .fb_fillrect = cfb_fillrect, |
59 | .fb_copyarea = cfb_copyarea, | |
60 | .fb_imageblit = cfb_imageblit, | |
785b93ef DA |
61 | .fb_pan_display = drm_fb_helper_pan_display, |
62 | .fb_blank = drm_fb_helper_blank, | |
068143d3 | 63 | .fb_setcmap = drm_fb_helper_setcmap, |
79e53945 JB |
64 | }; |
65 | ||
785b93ef DA |
66 | static struct drm_fb_helper_funcs intel_fb_helper_funcs = { |
67 | .gamma_set = intel_crtc_fb_gamma_set, | |
b8c00ac5 | 68 | .gamma_get = intel_crtc_fb_gamma_get, |
785b93ef DA |
69 | }; |
70 | ||
71 | ||
79e53945 | 72 | /** |
af901ca1 | 73 | * Currently it is assumed that the old framebuffer is reused. |
79e53945 JB |
74 | * |
75 | * LOCKING | |
76 | * caller should hold the mode config lock. | |
77 | * | |
78 | */ | |
79 | int intelfb_resize(struct drm_device *dev, struct drm_crtc *crtc) | |
80 | { | |
81 | struct fb_info *info; | |
82 | struct drm_framebuffer *fb; | |
83 | struct drm_display_mode *mode = crtc->desired_mode; | |
84 | ||
85 | fb = crtc->fb; | |
86 | if (!fb) | |
87 | return 1; | |
88 | ||
89 | info = fb->fbdev; | |
90 | if (!info) | |
91 | return 1; | |
92 | ||
93 | if (!mode) | |
94 | return 1; | |
95 | ||
96 | info->var.xres = mode->hdisplay; | |
97 | info->var.right_margin = mode->hsync_start - mode->hdisplay; | |
98 | info->var.hsync_len = mode->hsync_end - mode->hsync_start; | |
99 | info->var.left_margin = mode->htotal - mode->hsync_end; | |
100 | info->var.yres = mode->vdisplay; | |
101 | info->var.lower_margin = mode->vsync_start - mode->vdisplay; | |
102 | info->var.vsync_len = mode->vsync_end - mode->vsync_start; | |
103 | info->var.upper_margin = mode->vtotal - mode->vsync_end; | |
104 | info->var.pixclock = 10000000 / mode->htotal * 1000 / mode->vtotal * 100; | |
105 | /* avoid overflow */ | |
106 | info->var.pixclock = info->var.pixclock * 1000 / mode->vrefresh; | |
107 | ||
108 | return 0; | |
109 | } | |
110 | EXPORT_SYMBOL(intelfb_resize); | |
111 | ||
b358d0a6 HE |
112 | static int intelfb_create(struct drm_device *dev, uint32_t fb_width, |
113 | uint32_t fb_height, uint32_t surface_width, | |
114 | uint32_t surface_height, | |
d50ba256 | 115 | uint32_t surface_depth, uint32_t surface_bpp, |
785b93ef | 116 | struct drm_framebuffer **fb_p) |
79e53945 JB |
117 | { |
118 | struct fb_info *info; | |
119 | struct intelfb_par *par; | |
120 | struct drm_framebuffer *fb; | |
121 | struct intel_framebuffer *intel_fb; | |
122 | struct drm_mode_fb_cmd mode_cmd; | |
123 | struct drm_gem_object *fbo = NULL; | |
124 | struct drm_i915_gem_object *obj_priv; | |
125 | struct device *device = &dev->pdev->dev; | |
126 | int size, ret, mmio_bar = IS_I9XX(dev) ? 0 : 1; | |
127 | ||
b8c00ac5 DA |
128 | /* we don't do packed 24bpp */ |
129 | if (surface_bpp == 24) | |
130 | surface_bpp = 32; | |
131 | ||
79e53945 JB |
132 | mode_cmd.width = surface_width; |
133 | mode_cmd.height = surface_height; | |
134 | ||
d50ba256 | 135 | mode_cmd.bpp = surface_bpp; |
e7da40f0 | 136 | mode_cmd.pitch = ALIGN(mode_cmd.width * ((mode_cmd.bpp + 1) / 8), 64); |
d50ba256 | 137 | mode_cmd.depth = surface_depth; |
79e53945 JB |
138 | |
139 | size = mode_cmd.pitch * mode_cmd.height; | |
140 | size = ALIGN(size, PAGE_SIZE); | |
141 | fbo = drm_gem_object_alloc(dev, size); | |
142 | if (!fbo) { | |
1ae8c0a5 | 143 | DRM_ERROR("failed to allocate framebuffer\n"); |
79e53945 JB |
144 | ret = -ENOMEM; |
145 | goto out; | |
146 | } | |
147 | obj_priv = fbo->driver_private; | |
148 | ||
149 | mutex_lock(&dev->struct_mutex); | |
150 | ||
151 | ret = i915_gem_object_pin(fbo, PAGE_SIZE); | |
152 | if (ret) { | |
153 | DRM_ERROR("failed to pin fb: %d\n", ret); | |
154 | goto out_unref; | |
155 | } | |
156 | ||
157 | /* Flush everything out, we'll be doing GTT only from now on */ | |
158 | i915_gem_object_set_to_gtt_domain(fbo, 1); | |
159 | ||
160 | ret = intel_framebuffer_create(dev, &mode_cmd, &fb, fbo); | |
161 | if (ret) { | |
162 | DRM_ERROR("failed to allocate fb.\n"); | |
b4476f52 | 163 | goto out_unpin; |
79e53945 JB |
164 | } |
165 | ||
166 | list_add(&fb->filp_head, &dev->mode_config.fb_kernel_list); | |
167 | ||
168 | intel_fb = to_intel_framebuffer(fb); | |
785b93ef | 169 | *fb_p = fb; |
79e53945 JB |
170 | |
171 | info = framebuffer_alloc(sizeof(struct intelfb_par), device); | |
172 | if (!info) { | |
173 | ret = -ENOMEM; | |
b4476f52 | 174 | goto out_unpin; |
79e53945 JB |
175 | } |
176 | ||
177 | par = info->par; | |
178 | ||
785b93ef DA |
179 | par->helper.funcs = &intel_fb_helper_funcs; |
180 | par->helper.dev = dev; | |
181 | ret = drm_fb_helper_init_crtc_count(&par->helper, 2, | |
182 | INTELFB_CONN_LIMIT); | |
183 | if (ret) | |
184 | goto out_unref; | |
185 | ||
79e53945 | 186 | strcpy(info->fix.id, "inteldrmfb"); |
79e53945 JB |
187 | |
188 | info->flags = FBINFO_DEFAULT; | |
189 | ||
190 | info->fbops = &intelfb_ops; | |
191 | ||
4410f391 DA |
192 | |
193 | /* setup aperture base/size for vesafb takeover */ | |
194 | info->aperture_base = dev->mode_config.fb_base; | |
195 | if (IS_I9XX(dev)) | |
196 | info->aperture_size = pci_resource_len(dev->pdev, 2); | |
197 | else | |
198 | info->aperture_size = pci_resource_len(dev->pdev, 0); | |
199 | ||
79e53945 JB |
200 | info->fix.smem_start = dev->mode_config.fb_base + obj_priv->gtt_offset; |
201 | info->fix.smem_len = size; | |
202 | ||
203 | info->flags = FBINFO_DEFAULT; | |
204 | ||
205 | info->screen_base = ioremap_wc(dev->agp->base + obj_priv->gtt_offset, | |
206 | size); | |
207 | if (!info->screen_base) { | |
208 | ret = -ENOSPC; | |
b4476f52 | 209 | goto out_unpin; |
79e53945 JB |
210 | } |
211 | info->screen_size = size; | |
212 | ||
213 | // memset(info->screen_base, 0, size); | |
214 | ||
068143d3 | 215 | drm_fb_helper_fill_fix(info, fb->pitch, fb->depth); |
785b93ef | 216 | drm_fb_helper_fill_var(info, fb, fb_width, fb_height); |
79e53945 JB |
217 | |
218 | /* FIXME: we really shouldn't expose mmio space at all */ | |
219 | info->fix.mmio_start = pci_resource_start(dev->pdev, mmio_bar); | |
220 | info->fix.mmio_len = pci_resource_len(dev->pdev, mmio_bar); | |
221 | ||
222 | info->pixmap.size = 64*1024; | |
223 | info->pixmap.buf_align = 8; | |
224 | info->pixmap.access_align = 32; | |
225 | info->pixmap.flags = FB_PIXMAP_SYSTEM; | |
226 | info->pixmap.scan_align = 1; | |
227 | ||
79e53945 JB |
228 | fb->fbdev = info; |
229 | ||
230 | par->intel_fb = intel_fb; | |
79e53945 JB |
231 | |
232 | /* To allow resizeing without swapping buffers */ | |
1ae8c0a5 KP |
233 | DRM_DEBUG("allocated %dx%d fb: 0x%08x, bo %p\n", intel_fb->base.width, |
234 | intel_fb->base.height, obj_priv->gtt_offset, fbo); | |
79e53945 JB |
235 | |
236 | mutex_unlock(&dev->struct_mutex); | |
237 | return 0; | |
238 | ||
b4476f52 CW |
239 | out_unpin: |
240 | i915_gem_object_unpin(fbo); | |
79e53945 JB |
241 | out_unref: |
242 | drm_gem_object_unreference(fbo); | |
243 | mutex_unlock(&dev->struct_mutex); | |
244 | out: | |
245 | return ret; | |
246 | } | |
247 | ||
79e53945 JB |
248 | int intelfb_probe(struct drm_device *dev) |
249 | { | |
250 | int ret; | |
251 | ||
252 | DRM_DEBUG("\n"); | |
b8c00ac5 | 253 | ret = drm_fb_helper_single_fb_probe(dev, 32, intelfb_create); |
79e53945 JB |
254 | return ret; |
255 | } | |
256 | EXPORT_SYMBOL(intelfb_probe); | |
257 | ||
258 | int intelfb_remove(struct drm_device *dev, struct drm_framebuffer *fb) | |
259 | { | |
260 | struct fb_info *info; | |
261 | ||
262 | if (!fb) | |
263 | return -EINVAL; | |
264 | ||
265 | info = fb->fbdev; | |
266 | ||
267 | if (info) { | |
785b93ef | 268 | struct intelfb_par *par = info->par; |
79e53945 JB |
269 | unregister_framebuffer(info); |
270 | iounmap(info->screen_base); | |
785b93ef DA |
271 | if (info->par) |
272 | drm_fb_helper_free(&par->helper); | |
79e53945 JB |
273 | framebuffer_release(info); |
274 | } | |
275 | ||
79e53945 JB |
276 | return 0; |
277 | } | |
278 | EXPORT_SYMBOL(intelfb_remove); | |
279 | MODULE_LICENSE("GPL and additional rights"); |