Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 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" |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame^] | 42 | #include "drm_fb_helper.h" |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 43 | #include "intel_drv.h" |
| 44 | #include "i915_drm.h" |
| 45 | #include "i915_drv.h" |
| 46 | |
| 47 | struct intelfb_par { |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame^] | 48 | struct drm_fb_helper helper; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 49 | struct intel_framebuffer *intel_fb; |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame^] | 50 | struct drm_display_mode *our_mode; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 51 | }; |
| 52 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 53 | static struct fb_ops intelfb_ops = { |
| 54 | .owner = THIS_MODULE, |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame^] | 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, |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 58 | .fb_fillrect = cfb_fillrect, |
| 59 | .fb_copyarea = cfb_copyarea, |
| 60 | .fb_imageblit = cfb_imageblit, |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame^] | 61 | .fb_pan_display = drm_fb_helper_pan_display, |
| 62 | .fb_blank = drm_fb_helper_blank, |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 63 | }; |
| 64 | |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame^] | 65 | static struct drm_fb_helper_funcs intel_fb_helper_funcs = { |
| 66 | .gamma_set = intel_crtc_fb_gamma_set, |
| 67 | }; |
| 68 | |
| 69 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 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 | |
Hannes Eder | b358d0a | 2008-12-18 21:18:47 +0100 | [diff] [blame] | 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, |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame^] | 113 | struct drm_framebuffer **fb_p) |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 114 | { |
| 115 | struct fb_info *info; |
| 116 | struct intelfb_par *par; |
| 117 | struct drm_framebuffer *fb; |
| 118 | struct intel_framebuffer *intel_fb; |
| 119 | struct drm_mode_fb_cmd mode_cmd; |
| 120 | struct drm_gem_object *fbo = NULL; |
| 121 | struct drm_i915_gem_object *obj_priv; |
| 122 | struct device *device = &dev->pdev->dev; |
| 123 | int size, ret, mmio_bar = IS_I9XX(dev) ? 0 : 1; |
| 124 | |
| 125 | mode_cmd.width = surface_width; |
| 126 | mode_cmd.height = surface_height; |
| 127 | |
| 128 | mode_cmd.bpp = 32; |
Eric Anholt | e7da40f | 2008-12-10 17:23:00 -0800 | [diff] [blame] | 129 | mode_cmd.pitch = ALIGN(mode_cmd.width * ((mode_cmd.bpp + 1) / 8), 64); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 130 | mode_cmd.depth = 24; |
| 131 | |
| 132 | size = mode_cmd.pitch * mode_cmd.height; |
| 133 | size = ALIGN(size, PAGE_SIZE); |
| 134 | fbo = drm_gem_object_alloc(dev, size); |
| 135 | if (!fbo) { |
Keith Packard | 1ae8c0a | 2009-06-28 15:42:17 -0700 | [diff] [blame] | 136 | DRM_ERROR("failed to allocate framebuffer\n"); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 137 | ret = -ENOMEM; |
| 138 | goto out; |
| 139 | } |
| 140 | obj_priv = fbo->driver_private; |
| 141 | |
| 142 | mutex_lock(&dev->struct_mutex); |
| 143 | |
| 144 | ret = i915_gem_object_pin(fbo, PAGE_SIZE); |
| 145 | if (ret) { |
| 146 | DRM_ERROR("failed to pin fb: %d\n", ret); |
| 147 | goto out_unref; |
| 148 | } |
| 149 | |
| 150 | /* Flush everything out, we'll be doing GTT only from now on */ |
| 151 | i915_gem_object_set_to_gtt_domain(fbo, 1); |
| 152 | |
| 153 | ret = intel_framebuffer_create(dev, &mode_cmd, &fb, fbo); |
| 154 | if (ret) { |
| 155 | DRM_ERROR("failed to allocate fb.\n"); |
Chris Wilson | b4476f5 | 2009-02-11 14:26:36 +0000 | [diff] [blame] | 156 | goto out_unpin; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 157 | } |
| 158 | |
| 159 | list_add(&fb->filp_head, &dev->mode_config.fb_kernel_list); |
| 160 | |
| 161 | intel_fb = to_intel_framebuffer(fb); |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame^] | 162 | *fb_p = fb; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 163 | |
| 164 | info = framebuffer_alloc(sizeof(struct intelfb_par), device); |
| 165 | if (!info) { |
| 166 | ret = -ENOMEM; |
Chris Wilson | b4476f5 | 2009-02-11 14:26:36 +0000 | [diff] [blame] | 167 | goto out_unpin; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 168 | } |
| 169 | |
| 170 | par = info->par; |
| 171 | |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame^] | 172 | par->helper.funcs = &intel_fb_helper_funcs; |
| 173 | par->helper.dev = dev; |
| 174 | ret = drm_fb_helper_init_crtc_count(&par->helper, 2, |
| 175 | INTELFB_CONN_LIMIT); |
| 176 | if (ret) |
| 177 | goto out_unref; |
| 178 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 179 | strcpy(info->fix.id, "inteldrmfb"); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 180 | |
| 181 | info->flags = FBINFO_DEFAULT; |
| 182 | |
| 183 | info->fbops = &intelfb_ops; |
| 184 | |
Dave Airlie | 4410f39 | 2009-06-16 15:34:38 -0700 | [diff] [blame] | 185 | |
| 186 | /* setup aperture base/size for vesafb takeover */ |
| 187 | info->aperture_base = dev->mode_config.fb_base; |
| 188 | if (IS_I9XX(dev)) |
| 189 | info->aperture_size = pci_resource_len(dev->pdev, 2); |
| 190 | else |
| 191 | info->aperture_size = pci_resource_len(dev->pdev, 0); |
| 192 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 193 | info->fix.smem_start = dev->mode_config.fb_base + obj_priv->gtt_offset; |
| 194 | info->fix.smem_len = size; |
| 195 | |
| 196 | info->flags = FBINFO_DEFAULT; |
| 197 | |
| 198 | info->screen_base = ioremap_wc(dev->agp->base + obj_priv->gtt_offset, |
| 199 | size); |
| 200 | if (!info->screen_base) { |
| 201 | ret = -ENOSPC; |
Chris Wilson | b4476f5 | 2009-02-11 14:26:36 +0000 | [diff] [blame] | 202 | goto out_unpin; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 203 | } |
| 204 | info->screen_size = size; |
| 205 | |
| 206 | // memset(info->screen_base, 0, size); |
| 207 | |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame^] | 208 | drm_fb_helper_fill_fix(info, fb->depth); |
| 209 | drm_fb_helper_fill_var(info, fb, fb_width, fb_height); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 210 | |
| 211 | /* FIXME: we really shouldn't expose mmio space at all */ |
| 212 | info->fix.mmio_start = pci_resource_start(dev->pdev, mmio_bar); |
| 213 | info->fix.mmio_len = pci_resource_len(dev->pdev, mmio_bar); |
| 214 | |
| 215 | info->pixmap.size = 64*1024; |
| 216 | info->pixmap.buf_align = 8; |
| 217 | info->pixmap.access_align = 32; |
| 218 | info->pixmap.flags = FB_PIXMAP_SYSTEM; |
| 219 | info->pixmap.scan_align = 1; |
| 220 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 221 | fb->fbdev = info; |
| 222 | |
| 223 | par->intel_fb = intel_fb; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 224 | |
| 225 | /* To allow resizeing without swapping buffers */ |
Keith Packard | 1ae8c0a | 2009-06-28 15:42:17 -0700 | [diff] [blame] | 226 | DRM_DEBUG("allocated %dx%d fb: 0x%08x, bo %p\n", intel_fb->base.width, |
| 227 | intel_fb->base.height, obj_priv->gtt_offset, fbo); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 228 | |
| 229 | mutex_unlock(&dev->struct_mutex); |
| 230 | return 0; |
| 231 | |
Chris Wilson | b4476f5 | 2009-02-11 14:26:36 +0000 | [diff] [blame] | 232 | out_unpin: |
| 233 | i915_gem_object_unpin(fbo); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 234 | out_unref: |
| 235 | drm_gem_object_unreference(fbo); |
| 236 | mutex_unlock(&dev->struct_mutex); |
| 237 | out: |
| 238 | return ret; |
| 239 | } |
| 240 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 241 | int intelfb_probe(struct drm_device *dev) |
| 242 | { |
| 243 | int ret; |
| 244 | |
| 245 | DRM_DEBUG("\n"); |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame^] | 246 | ret = drm_fb_helper_single_fb_probe(dev, intelfb_create); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 247 | return ret; |
| 248 | } |
| 249 | EXPORT_SYMBOL(intelfb_probe); |
| 250 | |
| 251 | int intelfb_remove(struct drm_device *dev, struct drm_framebuffer *fb) |
| 252 | { |
| 253 | struct fb_info *info; |
| 254 | |
| 255 | if (!fb) |
| 256 | return -EINVAL; |
| 257 | |
| 258 | info = fb->fbdev; |
| 259 | |
| 260 | if (info) { |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame^] | 261 | struct intelfb_par *par = info->par; |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 262 | unregister_framebuffer(info); |
| 263 | iounmap(info->screen_base); |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame^] | 264 | if (info->par) |
| 265 | drm_fb_helper_free(&par->helper); |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 266 | framebuffer_release(info); |
| 267 | } |
| 268 | |
Jesse Barnes | 79e5394 | 2008-11-07 14:24:08 -0800 | [diff] [blame] | 269 | return 0; |
| 270 | } |
| 271 | EXPORT_SYMBOL(intelfb_remove); |
| 272 | MODULE_LICENSE("GPL and additional rights"); |