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>
42 #include "drm_fb_helper.h"
43 #include "intel_drv.h"
48 struct drm_fb_helper helper;
49 struct intel_framebuffer *intel_fb;
50 struct drm_display_mode *our_mode;
53 static struct fb_ops intelfb_ops = {
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,
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,
66 static struct drm_fb_helper_funcs intel_fb_helper_funcs = {
67 .gamma_set = intel_crtc_fb_gamma_set,
72 * Curretly it is assumed that the old framebuffer is reused.
75 * caller should hold the mode config lock.
78 int intelfb_resize(struct drm_device *dev, struct drm_crtc *crtc)
81 struct drm_framebuffer *fb;
82 struct drm_display_mode *mode = crtc->desired_mode;
95 info->var.xres = mode->hdisplay;
96 info->var.right_margin = mode->hsync_start - mode->hdisplay;
97 info->var.hsync_len = mode->hsync_end - mode->hsync_start;
98 info->var.left_margin = mode->htotal - mode->hsync_end;
99 info->var.yres = mode->vdisplay;
100 info->var.lower_margin = mode->vsync_start - mode->vdisplay;
101 info->var.vsync_len = mode->vsync_end - mode->vsync_start;
102 info->var.upper_margin = mode->vtotal - mode->vsync_end;
103 info->var.pixclock = 10000000 / mode->htotal * 1000 / mode->vtotal * 100;
105 info->var.pixclock = info->var.pixclock * 1000 / mode->vrefresh;
109 EXPORT_SYMBOL(intelfb_resize);
111 static int intelfb_create(struct drm_device *dev, uint32_t fb_width,
112 uint32_t fb_height, uint32_t surface_width,
113 uint32_t surface_height,
114 uint32_t surface_depth, uint32_t surface_bpp,
115 struct drm_framebuffer **fb_p)
117 struct fb_info *info;
118 struct intelfb_par *par;
119 struct drm_framebuffer *fb;
120 struct intel_framebuffer *intel_fb;
121 struct drm_mode_fb_cmd mode_cmd;
122 struct drm_gem_object *fbo = NULL;
123 struct drm_i915_gem_object *obj_priv;
124 struct device *device = &dev->pdev->dev;
125 int size, ret, mmio_bar = IS_I9XX(dev) ? 0 : 1;
127 mode_cmd.width = surface_width;
128 mode_cmd.height = surface_height;
130 mode_cmd.bpp = surface_bpp;
131 mode_cmd.pitch = ALIGN(mode_cmd.width * ((mode_cmd.bpp + 1) / 8), 64);
132 mode_cmd.depth = surface_depth;
134 size = mode_cmd.pitch * mode_cmd.height;
135 size = ALIGN(size, PAGE_SIZE);
136 fbo = drm_gem_object_alloc(dev, size);
138 DRM_ERROR("failed to allocate framebuffer\n");
142 obj_priv = fbo->driver_private;
144 mutex_lock(&dev->struct_mutex);
146 ret = i915_gem_object_pin(fbo, PAGE_SIZE);
148 DRM_ERROR("failed to pin fb: %d\n", ret);
152 /* Flush everything out, we'll be doing GTT only from now on */
153 i915_gem_object_set_to_gtt_domain(fbo, 1);
155 ret = intel_framebuffer_create(dev, &mode_cmd, &fb, fbo);
157 DRM_ERROR("failed to allocate fb.\n");
161 list_add(&fb->filp_head, &dev->mode_config.fb_kernel_list);
163 intel_fb = to_intel_framebuffer(fb);
166 info = framebuffer_alloc(sizeof(struct intelfb_par), device);
174 par->helper.funcs = &intel_fb_helper_funcs;
175 par->helper.dev = dev;
176 ret = drm_fb_helper_init_crtc_count(&par->helper, 2,
181 strcpy(info->fix.id, "inteldrmfb");
183 info->flags = FBINFO_DEFAULT;
185 info->fbops = &intelfb_ops;
188 /* setup aperture base/size for vesafb takeover */
189 info->aperture_base = dev->mode_config.fb_base;
191 info->aperture_size = pci_resource_len(dev->pdev, 2);
193 info->aperture_size = pci_resource_len(dev->pdev, 0);
195 info->fix.smem_start = dev->mode_config.fb_base + obj_priv->gtt_offset;
196 info->fix.smem_len = size;
198 info->flags = FBINFO_DEFAULT;
200 info->screen_base = ioremap_wc(dev->agp->base + obj_priv->gtt_offset,
202 if (!info->screen_base) {
206 info->screen_size = size;
208 // memset(info->screen_base, 0, size);
210 drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
211 drm_fb_helper_fill_var(info, fb, fb_width, fb_height);
213 /* FIXME: we really shouldn't expose mmio space at all */
214 info->fix.mmio_start = pci_resource_start(dev->pdev, mmio_bar);
215 info->fix.mmio_len = pci_resource_len(dev->pdev, mmio_bar);
217 info->pixmap.size = 64*1024;
218 info->pixmap.buf_align = 8;
219 info->pixmap.access_align = 32;
220 info->pixmap.flags = FB_PIXMAP_SYSTEM;
221 info->pixmap.scan_align = 1;
225 par->intel_fb = intel_fb;
227 /* To allow resizeing without swapping buffers */
228 DRM_DEBUG("allocated %dx%d fb: 0x%08x, bo %p\n", intel_fb->base.width,
229 intel_fb->base.height, obj_priv->gtt_offset, fbo);
231 mutex_unlock(&dev->struct_mutex);
235 i915_gem_object_unpin(fbo);
237 drm_gem_object_unreference(fbo);
238 mutex_unlock(&dev->struct_mutex);
243 int intelfb_probe(struct drm_device *dev)
248 ret = drm_fb_helper_single_fb_probe(dev, intelfb_create);
251 EXPORT_SYMBOL(intelfb_probe);
253 int intelfb_remove(struct drm_device *dev, struct drm_framebuffer *fb)
255 struct fb_info *info;
263 struct intelfb_par *par = info->par;
264 unregister_framebuffer(info);
265 iounmap(info->screen_base);
267 drm_fb_helper_free(&par->helper);
268 framebuffer_release(info);
273 EXPORT_SYMBOL(intelfb_remove);
274 MODULE_LICENSE("GPL and additional rights");