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
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.
27 #include <linux/module.h>
28 #include <linux/kernel.h>
29 #include <linux/errno.h>
30 #include <linux/string.h>
32 #include <linux/tty.h>
33 #include <linux/slab.h>
34 #include <linux/sysrq.h>
35 #include <linux/delay.h>
37 #include <linux/init.h>
38 #include <linux/vga_switcheroo.h>
43 #include "drm_fb_helper.h"
44 #include "intel_drv.h"
49 struct drm_fb_helper helper;
50 struct intel_framebuffer ifb;
51 struct list_head fbdev_list;
52 struct drm_display_mode *our_mode;
55 static struct fb_ops intelfb_ops = {
57 .fb_check_var = drm_fb_helper_check_var,
58 .fb_set_par = drm_fb_helper_set_par,
59 .fb_setcolreg = drm_fb_helper_setcolreg,
60 .fb_fillrect = cfb_fillrect,
61 .fb_copyarea = cfb_copyarea,
62 .fb_imageblit = cfb_imageblit,
63 .fb_pan_display = drm_fb_helper_pan_display,
64 .fb_blank = drm_fb_helper_blank,
65 .fb_setcmap = drm_fb_helper_setcmap,
68 static struct drm_fb_helper_funcs intel_fb_helper_funcs = {
69 .gamma_set = intel_crtc_fb_gamma_set,
70 .gamma_get = intel_crtc_fb_gamma_get,
74 static int intelfb_create(struct intel_fbdev *ifbdev,
75 struct drm_fb_helper_surface_size *sizes)
77 struct drm_device *dev = ifbdev->helper.dev;
79 struct drm_framebuffer *fb;
80 struct drm_mode_fb_cmd mode_cmd;
81 struct drm_gem_object *fbo = NULL;
82 struct drm_i915_gem_object *obj_priv;
83 struct device *device = &dev->pdev->dev;
84 int size, ret, mmio_bar = IS_I9XX(dev) ? 0 : 1;
86 /* we don't do packed 24bpp */
87 if (sizes->surface_bpp == 24)
88 sizes->surface_bpp = 32;
90 mode_cmd.width = sizes->surface_width;
91 mode_cmd.height = sizes->surface_height;
93 mode_cmd.bpp = sizes->surface_bpp;
94 mode_cmd.pitch = ALIGN(mode_cmd.width * ((mode_cmd.bpp + 1) / 8), 64);
95 mode_cmd.depth = sizes->surface_depth;
97 size = mode_cmd.pitch * mode_cmd.height;
98 size = ALIGN(size, PAGE_SIZE);
99 fbo = drm_gem_object_alloc(dev, size);
101 DRM_ERROR("failed to allocate framebuffer\n");
105 obj_priv = fbo->driver_private;
107 mutex_lock(&dev->struct_mutex);
109 ret = i915_gem_object_pin(fbo, 64*1024);
111 DRM_ERROR("failed to pin fb: %d\n", ret);
115 /* Flush everything out, we'll be doing GTT only from now on */
116 i915_gem_object_set_to_gtt_domain(fbo, 1);
118 info = framebuffer_alloc(0, device);
126 intel_framebuffer_init(dev, &ifbdev->ifb, &mode_cmd, fbo);
128 fb = &ifbdev->ifb.base;
130 ifbdev->helper.fb = fb;
131 ifbdev->helper.fbdev = info;
132 ifbdev->helper.funcs = &intel_fb_helper_funcs;
134 strcpy(info->fix.id, "inteldrmfb");
136 info->flags = FBINFO_DEFAULT;
137 info->fbops = &intelfb_ops;
139 /* setup aperture base/size for vesafb takeover */
140 info->aperture_base = dev->mode_config.fb_base;
142 info->aperture_size = pci_resource_len(dev->pdev, 2);
144 info->aperture_size = pci_resource_len(dev->pdev, 0);
146 info->fix.smem_start = dev->mode_config.fb_base + obj_priv->gtt_offset;
147 info->fix.smem_len = size;
149 info->flags = FBINFO_DEFAULT;
151 info->screen_base = ioremap_wc(dev->agp->base + obj_priv->gtt_offset,
153 if (!info->screen_base) {
157 info->screen_size = size;
159 // memset(info->screen_base, 0, size);
161 drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
162 drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height);
164 /* FIXME: we really shouldn't expose mmio space at all */
165 info->fix.mmio_start = pci_resource_start(dev->pdev, mmio_bar);
166 info->fix.mmio_len = pci_resource_len(dev->pdev, mmio_bar);
168 info->pixmap.size = 64*1024;
169 info->pixmap.buf_align = 8;
170 info->pixmap.access_align = 32;
171 info->pixmap.flags = FB_PIXMAP_SYSTEM;
172 info->pixmap.scan_align = 1;
174 DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08x, bo %p\n",
175 fb->width, fb->height,
176 obj_priv->gtt_offset, fbo);
179 mutex_unlock(&dev->struct_mutex);
180 vga_switcheroo_client_fb_set(dev->pdev, info);
184 i915_gem_object_unpin(fbo);
186 drm_gem_object_unreference(fbo);
187 mutex_unlock(&dev->struct_mutex);
192 static int intel_fb_find_or_create_single(struct drm_fb_helper *helper,
193 struct drm_fb_helper_surface_size *sizes)
195 struct intel_fbdev *ifbdev = (struct intel_fbdev *)helper;
200 ret = intelfb_create(ifbdev, sizes);
208 static int intelfb_probe(struct intel_fbdev *ifbdev)
213 ret = drm_fb_helper_single_fb_probe(&ifbdev->helper, 32);
217 int intel_fbdev_destroy(struct drm_device *dev,
218 struct intel_fbdev *ifbdev)
220 struct fb_info *info;
221 struct intel_framebuffer *ifb = &ifbdev->ifb;
223 if (ifbdev->helper.fbdev) {
224 info = ifbdev->helper.fbdev;
225 unregister_framebuffer(info);
226 iounmap(info->screen_base);
227 framebuffer_release(info);
230 drm_fb_helper_free(&ifbdev->helper);
232 drm_framebuffer_cleanup(&ifb->base);
234 drm_gem_object_unreference_unlocked(ifb->obj);
239 int intel_fbdev_init(struct drm_device *dev)
241 struct intel_fbdev *ifbdev;
242 drm_i915_private_t *dev_priv = dev->dev_private;
244 ifbdev = kzalloc(sizeof(struct intel_fbdev), GFP_KERNEL);
248 dev_priv->fbdev = ifbdev;
250 drm_fb_helper_init_crtc_count(dev, &ifbdev->helper, 2,
252 ifbdev->helper.fb_probe = intel_fb_find_or_create_single;
253 drm_fb_helper_initial_config(&ifbdev->helper);
254 intelfb_probe(ifbdev);
258 void intel_fbdev_fini(struct drm_device *dev)
260 drm_i915_private_t *dev_priv = dev->dev_private;
261 if (!dev_priv->fbdev)
264 intel_fbdev_destroy(dev, dev_priv->fbdev);
265 kfree(dev_priv->fbdev);
266 dev_priv->fbdev = NULL;
268 MODULE_LICENSE("GPL and additional rights");