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"
48 struct intel_kernel_fbdev {
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 drm_device *dev,
75 struct drm_fb_helper_surface_size *sizes,
76 struct intel_kernel_fbdev **ifbdev_p)
79 struct intel_kernel_fbdev *ifbdev;
80 struct drm_framebuffer *fb;
81 struct intel_framebuffer *intel_fb;
82 struct drm_mode_fb_cmd mode_cmd;
83 struct drm_gem_object *fbo = NULL;
84 struct drm_i915_gem_object *obj_priv;
85 struct device *device = &dev->pdev->dev;
86 int size, ret, mmio_bar = IS_I9XX(dev) ? 0 : 1;
88 /* we don't do packed 24bpp */
89 if (sizes->surface_bpp == 24)
90 sizes->surface_bpp = 32;
92 mode_cmd.width = sizes->surface_width;
93 mode_cmd.height = sizes->surface_height;
95 mode_cmd.bpp = sizes->surface_bpp;
96 mode_cmd.pitch = ALIGN(mode_cmd.width * ((mode_cmd.bpp + 1) / 8), 64);
97 mode_cmd.depth = sizes->surface_depth;
99 size = mode_cmd.pitch * mode_cmd.height;
100 size = ALIGN(size, PAGE_SIZE);
101 fbo = drm_gem_object_alloc(dev, size);
103 DRM_ERROR("failed to allocate framebuffer\n");
107 obj_priv = fbo->driver_private;
109 mutex_lock(&dev->struct_mutex);
111 ret = i915_gem_object_pin(fbo, 64*1024);
113 DRM_ERROR("failed to pin fb: %d\n", ret);
117 /* Flush everything out, we'll be doing GTT only from now on */
118 i915_gem_object_set_to_gtt_domain(fbo, 1);
120 info = framebuffer_alloc(sizeof(struct intel_kernel_fbdev), device);
127 intel_framebuffer_init(dev, &ifbdev->ifb, &mode_cmd, fbo);
129 fb = &ifbdev->ifb.base;
131 ifbdev->helper.fb = fb;
132 ifbdev->helper.fbdev = info;
133 ifbdev->helper.funcs = &intel_fb_helper_funcs;
134 ifbdev->helper.dev = dev;
138 ret = drm_fb_helper_init_crtc_count(&ifbdev->helper, 2,
143 strcpy(info->fix.id, "inteldrmfb");
145 info->flags = FBINFO_DEFAULT;
147 info->fbops = &intelfb_ops;
150 /* setup aperture base/size for vesafb takeover */
151 info->aperture_base = dev->mode_config.fb_base;
153 info->aperture_size = pci_resource_len(dev->pdev, 2);
155 info->aperture_size = pci_resource_len(dev->pdev, 0);
157 info->fix.smem_start = dev->mode_config.fb_base + obj_priv->gtt_offset;
158 info->fix.smem_len = size;
160 info->flags = FBINFO_DEFAULT;
162 info->screen_base = ioremap_wc(dev->agp->base + obj_priv->gtt_offset,
164 if (!info->screen_base) {
168 info->screen_size = size;
170 // memset(info->screen_base, 0, size);
172 drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
173 drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height);
175 /* FIXME: we really shouldn't expose mmio space at all */
176 info->fix.mmio_start = pci_resource_start(dev->pdev, mmio_bar);
177 info->fix.mmio_len = pci_resource_len(dev->pdev, mmio_bar);
179 info->pixmap.size = 64*1024;
180 info->pixmap.buf_align = 8;
181 info->pixmap.access_align = 32;
182 info->pixmap.flags = FB_PIXMAP_SYSTEM;
183 info->pixmap.scan_align = 1;
185 DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08x, bo %p\n",
186 intel_fb->base.width, intel_fb->base.height,
187 obj_priv->gtt_offset, fbo);
190 mutex_unlock(&dev->struct_mutex);
191 vga_switcheroo_client_fb_set(dev->pdev, info);
195 i915_gem_object_unpin(fbo);
197 drm_gem_object_unreference(fbo);
198 mutex_unlock(&dev->struct_mutex);
203 static int intel_fb_find_or_create_single(struct drm_device *dev,
204 struct drm_fb_helper_surface_size *sizes,
205 struct drm_fb_helper **fb_ptr)
207 drm_i915_private_t *dev_priv = dev->dev_private;
208 struct intel_kernel_fbdev *ifbdev = NULL;
212 if (!dev_priv->fbdev) {
213 ret = intelfb_create(dev, sizes,
218 dev_priv->fbdev = ifbdev;
221 ifbdev = dev_priv->fbdev;
222 if (ifbdev->ifb.base.width < sizes->surface_width ||
223 ifbdev->ifb.base.height < sizes->surface_height) {
224 DRM_ERROR("Framebuffer not large enough to scale console onto.\n");
229 *fb_ptr = &ifbdev->helper;
233 static int intelfb_probe(struct drm_device *dev)
238 ret = drm_fb_helper_single_fb_probe(dev, 32, intel_fb_find_or_create_single);
242 int intel_fbdev_destroy(struct drm_device *dev,
243 struct intel_kernel_fbdev *ifbdev)
245 struct fb_info *info;
246 struct intel_framebuffer *ifb = &ifbdev->ifb;
248 info = ifbdev->helper.fbdev;
250 unregister_framebuffer(info);
251 iounmap(info->screen_base);
252 drm_fb_helper_free(&ifbdev->helper);
254 drm_framebuffer_cleanup(&ifb->base);
255 drm_gem_object_unreference_unlocked(ifb->obj);
257 framebuffer_release(info);
262 int intel_fbdev_init(struct drm_device *dev)
264 drm_helper_initial_config(dev);
269 void intel_fbdev_fini(struct drm_device *dev)
271 drm_i915_private_t *dev_priv = dev->dev_private;
272 intel_fbdev_destroy(dev, dev_priv->fbdev);
273 dev_priv->fbdev = NULL;
275 MODULE_LICENSE("GPL and additional rights");