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/sysrq.h>
34 #include <linux/delay.h>
36 #include <linux/init.h>
37 #include <linux/vga_switcheroo.h>
42 #include "drm_fb_helper.h"
43 #include "intel_drv.h"
48 struct drm_fb_helper helper;
49 struct intel_framebuffer ifb;
50 struct list_head fbdev_list;
51 struct drm_display_mode *our_mode;
54 static struct fb_ops intelfb_ops = {
56 .fb_check_var = drm_fb_helper_check_var,
57 .fb_set_par = drm_fb_helper_set_par,
58 .fb_fillrect = cfb_fillrect,
59 .fb_copyarea = cfb_copyarea,
60 .fb_imageblit = cfb_imageblit,
61 .fb_pan_display = drm_fb_helper_pan_display,
62 .fb_blank = drm_fb_helper_blank,
63 .fb_setcmap = drm_fb_helper_setcmap,
64 .fb_debug_enter = drm_fb_helper_debug_enter,
65 .fb_debug_leave = drm_fb_helper_debug_leave,
68 static int intelfb_create(struct intel_fbdev *ifbdev,
69 struct drm_fb_helper_surface_size *sizes)
71 struct drm_device *dev = ifbdev->helper.dev;
73 struct drm_framebuffer *fb;
74 struct drm_mode_fb_cmd mode_cmd;
75 struct drm_gem_object *fbo = NULL;
76 struct drm_i915_gem_object *obj_priv;
77 struct device *device = &dev->pdev->dev;
78 int size, ret, mmio_bar = IS_I9XX(dev) ? 0 : 1;
80 /* we don't do packed 24bpp */
81 if (sizes->surface_bpp == 24)
82 sizes->surface_bpp = 32;
84 mode_cmd.width = sizes->surface_width;
85 mode_cmd.height = sizes->surface_height;
87 mode_cmd.bpp = sizes->surface_bpp;
88 mode_cmd.pitch = ALIGN(mode_cmd.width * ((mode_cmd.bpp + 1) / 8), 64);
89 mode_cmd.depth = sizes->surface_depth;
91 size = mode_cmd.pitch * mode_cmd.height;
92 size = ALIGN(size, PAGE_SIZE);
93 fbo = i915_gem_alloc_object(dev, size);
95 DRM_ERROR("failed to allocate framebuffer\n");
99 obj_priv = to_intel_bo(fbo);
101 mutex_lock(&dev->struct_mutex);
103 ret = intel_pin_and_fence_fb_obj(dev, fbo);
105 DRM_ERROR("failed to pin fb: %d\n", ret);
109 /* Flush everything out, we'll be doing GTT only from now on */
110 ret = i915_gem_object_set_to_gtt_domain(fbo, 1);
112 DRM_ERROR("failed to bind fb: %d.\n", ret);
116 info = framebuffer_alloc(0, device);
124 ret = intel_framebuffer_init(dev, &ifbdev->ifb, &mode_cmd, fbo);
128 fb = &ifbdev->ifb.base;
130 ifbdev->helper.fb = fb;
131 ifbdev->helper.fbdev = info;
133 strcpy(info->fix.id, "inteldrmfb");
135 info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT;
136 info->fbops = &intelfb_ops;
138 /* setup aperture base/size for vesafb takeover */
139 info->apertures = alloc_apertures(1);
140 if (!info->apertures) {
144 info->apertures->ranges[0].base = dev->mode_config.fb_base;
146 info->apertures->ranges[0].size = pci_resource_len(dev->pdev, 2);
148 info->apertures->ranges[0].size = pci_resource_len(dev->pdev, 0);
150 info->fix.smem_start = dev->mode_config.fb_base + obj_priv->gtt_offset;
151 info->fix.smem_len = size;
153 info->screen_base = ioremap_wc(dev->agp->base + obj_priv->gtt_offset,
155 if (!info->screen_base) {
160 ret = fb_alloc_cmap(&info->cmap, 256, 0);
165 info->screen_size = size;
167 // memset(info->screen_base, 0, size);
169 drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
170 drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height);
172 /* FIXME: we really shouldn't expose mmio space at all */
173 info->fix.mmio_start = pci_resource_start(dev->pdev, mmio_bar);
174 info->fix.mmio_len = pci_resource_len(dev->pdev, mmio_bar);
176 info->pixmap.size = 64*1024;
177 info->pixmap.buf_align = 8;
178 info->pixmap.access_align = 32;
179 info->pixmap.flags = FB_PIXMAP_SYSTEM;
180 info->pixmap.scan_align = 1;
182 DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08x, bo %p\n",
183 fb->width, fb->height,
184 obj_priv->gtt_offset, fbo);
187 mutex_unlock(&dev->struct_mutex);
188 vga_switcheroo_client_fb_set(dev->pdev, info);
192 i915_gem_object_unpin(fbo);
194 drm_gem_object_unreference(fbo);
195 mutex_unlock(&dev->struct_mutex);
200 static int intel_fb_find_or_create_single(struct drm_fb_helper *helper,
201 struct drm_fb_helper_surface_size *sizes)
203 struct intel_fbdev *ifbdev = (struct intel_fbdev *)helper;
208 ret = intelfb_create(ifbdev, sizes);
216 static struct drm_fb_helper_funcs intel_fb_helper_funcs = {
217 .gamma_set = intel_crtc_fb_gamma_set,
218 .gamma_get = intel_crtc_fb_gamma_get,
219 .fb_probe = intel_fb_find_or_create_single,
222 int intel_fbdev_destroy(struct drm_device *dev,
223 struct intel_fbdev *ifbdev)
225 struct fb_info *info;
226 struct intel_framebuffer *ifb = &ifbdev->ifb;
228 if (ifbdev->helper.fbdev) {
229 info = ifbdev->helper.fbdev;
230 unregister_framebuffer(info);
231 iounmap(info->screen_base);
233 fb_dealloc_cmap(&info->cmap);
234 framebuffer_release(info);
237 drm_fb_helper_fini(&ifbdev->helper);
239 drm_framebuffer_cleanup(&ifb->base);
241 drm_gem_object_unreference(ifb->obj);
248 int intel_fbdev_init(struct drm_device *dev)
250 struct intel_fbdev *ifbdev;
251 drm_i915_private_t *dev_priv = dev->dev_private;
254 ifbdev = kzalloc(sizeof(struct intel_fbdev), GFP_KERNEL);
258 dev_priv->fbdev = ifbdev;
259 ifbdev->helper.funcs = &intel_fb_helper_funcs;
261 ret = drm_fb_helper_init(dev, &ifbdev->helper,
269 drm_fb_helper_single_add_all_connectors(&ifbdev->helper);
270 drm_fb_helper_initial_config(&ifbdev->helper, 32);
274 void intel_fbdev_fini(struct drm_device *dev)
276 drm_i915_private_t *dev_priv = dev->dev_private;
277 if (!dev_priv->fbdev)
280 intel_fbdev_destroy(dev, dev_priv->fbdev);
281 kfree(dev_priv->fbdev);
282 dev_priv->fbdev = NULL;
284 MODULE_LICENSE("GPL and additional rights");
286 void intel_fb_output_poll_changed(struct drm_device *dev)
288 drm_i915_private_t *dev_priv = dev->dev_private;
289 drm_fb_helper_hotplug_event(&dev_priv->fbdev->helper);