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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, | |
79e53945 JB |
63 | }; |
64 | ||
785b93ef DA |
65 | static struct drm_fb_helper_funcs intel_fb_helper_funcs = { |
66 | .gamma_set = intel_crtc_fb_gamma_set, | |
67 | }; | |
68 | ||
69 | ||
79e53945 JB |
70 | /** |
71 | * Curretly it is assumed that the old framebuffer is reused. | |
72 | * | |
73 | * LOCKING | |
74 | * caller should hold the mode config lock. | |
75 | * | |
76 | */ | |
77 | int intelfb_resize(struct drm_device *dev, struct drm_crtc *crtc) | |
78 | { | |
79 | struct fb_info *info; | |
80 | struct drm_framebuffer *fb; | |
81 | struct drm_display_mode *mode = crtc->desired_mode; | |
82 | ||
83 | fb = crtc->fb; | |
84 | if (!fb) | |
85 | return 1; | |
86 | ||
87 | info = fb->fbdev; | |
88 | if (!info) | |
89 | return 1; | |
90 | ||
91 | if (!mode) | |
92 | return 1; | |
93 | ||
94 | info->var.xres = mode->hdisplay; | |
95 | info->var.right_margin = mode->hsync_start - mode->hdisplay; | |
96 | info->var.hsync_len = mode->hsync_end - mode->hsync_start; | |
97 | info->var.left_margin = mode->htotal - mode->hsync_end; | |
98 | info->var.yres = mode->vdisplay; | |
99 | info->var.lower_margin = mode->vsync_start - mode->vdisplay; | |
100 | info->var.vsync_len = mode->vsync_end - mode->vsync_start; | |
101 | info->var.upper_margin = mode->vtotal - mode->vsync_end; | |
102 | info->var.pixclock = 10000000 / mode->htotal * 1000 / mode->vtotal * 100; | |
103 | /* avoid overflow */ | |
104 | info->var.pixclock = info->var.pixclock * 1000 / mode->vrefresh; | |
105 | ||
106 | return 0; | |
107 | } | |
108 | EXPORT_SYMBOL(intelfb_resize); | |
109 | ||
b358d0a6 HE |
110 | static int intelfb_create(struct drm_device *dev, uint32_t fb_width, |
111 | uint32_t fb_height, uint32_t surface_width, | |
112 | uint32_t surface_height, | |
d50ba256 | 113 | uint32_t surface_depth, uint32_t surface_bpp, |
785b93ef | 114 | struct drm_framebuffer **fb_p) |
79e53945 JB |
115 | { |
116 | struct fb_info *info; | |
117 | struct intelfb_par *par; | |
118 | struct drm_framebuffer *fb; | |
119 | struct intel_framebuffer *intel_fb; | |
120 | struct drm_mode_fb_cmd mode_cmd; | |
121 | struct drm_gem_object *fbo = NULL; | |
122 | struct drm_i915_gem_object *obj_priv; | |
123 | struct device *device = &dev->pdev->dev; | |
124 | int size, ret, mmio_bar = IS_I9XX(dev) ? 0 : 1; | |
125 | ||
126 | mode_cmd.width = surface_width; | |
127 | mode_cmd.height = surface_height; | |
128 | ||
d50ba256 | 129 | mode_cmd.bpp = surface_bpp; |
e7da40f0 | 130 | mode_cmd.pitch = ALIGN(mode_cmd.width * ((mode_cmd.bpp + 1) / 8), 64); |
d50ba256 | 131 | mode_cmd.depth = surface_depth; |
79e53945 JB |
132 | |
133 | size = mode_cmd.pitch * mode_cmd.height; | |
134 | size = ALIGN(size, PAGE_SIZE); | |
135 | fbo = drm_gem_object_alloc(dev, size); | |
136 | if (!fbo) { | |
1ae8c0a5 | 137 | DRM_ERROR("failed to allocate framebuffer\n"); |
79e53945 JB |
138 | ret = -ENOMEM; |
139 | goto out; | |
140 | } | |
141 | obj_priv = fbo->driver_private; | |
142 | ||
143 | mutex_lock(&dev->struct_mutex); | |
144 | ||
145 | ret = i915_gem_object_pin(fbo, PAGE_SIZE); | |
146 | if (ret) { | |
147 | DRM_ERROR("failed to pin fb: %d\n", ret); | |
148 | goto out_unref; | |
149 | } | |
150 | ||
151 | /* Flush everything out, we'll be doing GTT only from now on */ | |
152 | i915_gem_object_set_to_gtt_domain(fbo, 1); | |
153 | ||
154 | ret = intel_framebuffer_create(dev, &mode_cmd, &fb, fbo); | |
155 | if (ret) { | |
156 | DRM_ERROR("failed to allocate fb.\n"); | |
b4476f52 | 157 | goto out_unpin; |
79e53945 JB |
158 | } |
159 | ||
160 | list_add(&fb->filp_head, &dev->mode_config.fb_kernel_list); | |
161 | ||
162 | intel_fb = to_intel_framebuffer(fb); | |
785b93ef | 163 | *fb_p = fb; |
79e53945 JB |
164 | |
165 | info = framebuffer_alloc(sizeof(struct intelfb_par), device); | |
166 | if (!info) { | |
167 | ret = -ENOMEM; | |
b4476f52 | 168 | goto out_unpin; |
79e53945 JB |
169 | } |
170 | ||
171 | par = info->par; | |
172 | ||
785b93ef DA |
173 | par->helper.funcs = &intel_fb_helper_funcs; |
174 | par->helper.dev = dev; | |
175 | ret = drm_fb_helper_init_crtc_count(&par->helper, 2, | |
176 | INTELFB_CONN_LIMIT); | |
177 | if (ret) | |
178 | goto out_unref; | |
179 | ||
79e53945 | 180 | strcpy(info->fix.id, "inteldrmfb"); |
79e53945 JB |
181 | |
182 | info->flags = FBINFO_DEFAULT; | |
183 | ||
184 | info->fbops = &intelfb_ops; | |
185 | ||
4410f391 DA |
186 | |
187 | /* setup aperture base/size for vesafb takeover */ | |
188 | info->aperture_base = dev->mode_config.fb_base; | |
189 | if (IS_I9XX(dev)) | |
190 | info->aperture_size = pci_resource_len(dev->pdev, 2); | |
191 | else | |
192 | info->aperture_size = pci_resource_len(dev->pdev, 0); | |
193 | ||
79e53945 JB |
194 | info->fix.smem_start = dev->mode_config.fb_base + obj_priv->gtt_offset; |
195 | info->fix.smem_len = size; | |
196 | ||
197 | info->flags = FBINFO_DEFAULT; | |
198 | ||
199 | info->screen_base = ioremap_wc(dev->agp->base + obj_priv->gtt_offset, | |
200 | size); | |
201 | if (!info->screen_base) { | |
202 | ret = -ENOSPC; | |
b4476f52 | 203 | goto out_unpin; |
79e53945 JB |
204 | } |
205 | info->screen_size = size; | |
206 | ||
207 | // memset(info->screen_base, 0, size); | |
208 | ||
3420e742 | 209 | drm_fb_helper_fill_fix(info, fb->pitch); |
785b93ef | 210 | drm_fb_helper_fill_var(info, fb, fb_width, fb_height); |
79e53945 JB |
211 | |
212 | /* FIXME: we really shouldn't expose mmio space at all */ | |
213 | info->fix.mmio_start = pci_resource_start(dev->pdev, mmio_bar); | |
214 | info->fix.mmio_len = pci_resource_len(dev->pdev, mmio_bar); | |
215 | ||
216 | info->pixmap.size = 64*1024; | |
217 | info->pixmap.buf_align = 8; | |
218 | info->pixmap.access_align = 32; | |
219 | info->pixmap.flags = FB_PIXMAP_SYSTEM; | |
220 | info->pixmap.scan_align = 1; | |
221 | ||
79e53945 JB |
222 | fb->fbdev = info; |
223 | ||
224 | par->intel_fb = intel_fb; | |
79e53945 JB |
225 | |
226 | /* To allow resizeing without swapping buffers */ | |
1ae8c0a5 KP |
227 | DRM_DEBUG("allocated %dx%d fb: 0x%08x, bo %p\n", intel_fb->base.width, |
228 | intel_fb->base.height, obj_priv->gtt_offset, fbo); | |
79e53945 JB |
229 | |
230 | mutex_unlock(&dev->struct_mutex); | |
231 | return 0; | |
232 | ||
b4476f52 CW |
233 | out_unpin: |
234 | i915_gem_object_unpin(fbo); | |
79e53945 JB |
235 | out_unref: |
236 | drm_gem_object_unreference(fbo); | |
237 | mutex_unlock(&dev->struct_mutex); | |
238 | out: | |
239 | return ret; | |
240 | } | |
241 | ||
79e53945 JB |
242 | int intelfb_probe(struct drm_device *dev) |
243 | { | |
244 | int ret; | |
245 | ||
246 | DRM_DEBUG("\n"); | |
785b93ef | 247 | ret = drm_fb_helper_single_fb_probe(dev, intelfb_create); |
79e53945 JB |
248 | return ret; |
249 | } | |
250 | EXPORT_SYMBOL(intelfb_probe); | |
251 | ||
252 | int intelfb_remove(struct drm_device *dev, struct drm_framebuffer *fb) | |
253 | { | |
254 | struct fb_info *info; | |
255 | ||
256 | if (!fb) | |
257 | return -EINVAL; | |
258 | ||
259 | info = fb->fbdev; | |
260 | ||
261 | if (info) { | |
785b93ef | 262 | struct intelfb_par *par = info->par; |
79e53945 JB |
263 | unregister_framebuffer(info); |
264 | iounmap(info->screen_base); | |
785b93ef DA |
265 | if (info->par) |
266 | drm_fb_helper_free(&par->helper); | |
79e53945 JB |
267 | framebuffer_release(info); |
268 | } | |
269 | ||
79e53945 JB |
270 | return 0; |
271 | } | |
272 | EXPORT_SYMBOL(intelfb_remove); | |
273 | MODULE_LICENSE("GPL and additional rights"); |