| 0,0 → 1,292 |
|---|
| /* |
| * Copyright © 2007 David Airlie |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the next |
| * paragraph) shall be included in all copies or substantial portions of the |
| * Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| * DEALINGS IN THE SOFTWARE. |
| * |
| * Authors: |
| * David Airlie |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/kernel.h> |
| #include <linux/errno.h> |
| #include <linux/string.h> |
| //#include <linux/mm.h> |
| //#include <linux/tty.h> |
| #include <linux/sysrq.h> |
| //#include <linux/delay.h> |
| #include <linux/fb.h> |
| //#include <linux/init.h> |
| //#include <linux/vga_switcheroo.h> |
| |
| #include <drm/drmP.h> |
| #include <drm/drm_crtc.h> |
| #include <drm/drm_fb_helper.h> |
| #include "intel_drv.h" |
| #include <drm/i915_drm.h> |
| #include "i915_drv.h" |
| |
| |
| struct fb_info *framebuffer_alloc(size_t size, struct device *dev) |
| { |
| #define BYTES_PER_LONG (BITS_PER_LONG/8) |
| #define PADDING (BYTES_PER_LONG - (sizeof(struct fb_info) % BYTES_PER_LONG)) |
| int fb_info_size = sizeof(struct fb_info); |
| struct fb_info *info; |
| char *p; |
| |
| if (size) |
| fb_info_size += PADDING; |
| |
| p = kzalloc(fb_info_size + size, GFP_KERNEL); |
| |
| if (!p) |
| return NULL; |
| |
| info = (struct fb_info *) p; |
| |
| if (size) |
| info->par = p + fb_info_size; |
| |
| return info; |
| #undef PADDING |
| #undef BYTES_PER_LONG |
| } |
| |
| |
| static struct fb_ops intelfb_ops = { |
| .owner = THIS_MODULE, |
| .fb_check_var = drm_fb_helper_check_var, |
| .fb_set_par = drm_fb_helper_set_par, |
| // .fb_fillrect = cfb_fillrect, |
| // .fb_copyarea = cfb_copyarea, |
| // .fb_imageblit = cfb_imageblit, |
| // .fb_pan_display = drm_fb_helper_pan_display, |
| .fb_blank = drm_fb_helper_blank, |
| // .fb_setcmap = drm_fb_helper_setcmap, |
| // .fb_debug_enter = drm_fb_helper_debug_enter, |
| // .fb_debug_leave = drm_fb_helper_debug_leave, |
| }; |
| |
| static int intelfb_alloc(struct drm_fb_helper *helper, |
| struct drm_fb_helper_surface_size *sizes) |
| { |
| struct intel_fbdev *ifbdev = |
| container_of(helper, struct intel_fbdev, helper); |
| struct drm_device *dev = helper->dev; |
| struct drm_mode_fb_cmd2 mode_cmd = {}; |
| struct drm_i915_gem_object *obj; |
| int size, ret; |
| |
| /* we don't do packed 24bpp */ |
| if (sizes->surface_bpp == 24) |
| sizes->surface_bpp = 32; |
| |
| mode_cmd.width = sizes->surface_width; |
| mode_cmd.height = sizes->surface_height; |
| |
| mode_cmd.pitches[0] = ALIGN(mode_cmd.width * ((sizes->surface_bpp + 7) / |
| 8), 512); |
| mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp, |
| sizes->surface_depth); |
| |
| size = mode_cmd.pitches[0] * mode_cmd.height; |
| size = ALIGN(size, PAGE_SIZE); |
| obj = main_fb_obj; |
| if (!obj) { |
| DRM_ERROR("failed to allocate framebuffer\n"); |
| ret = -ENOMEM; |
| goto out; |
| } |
| obj->has_global_gtt_mapping = 0; |
| obj->stride = mode_cmd.pitches[0]; |
| |
| /* Flush everything out, we'll be doing GTT only from now on */ |
| ret = intel_pin_and_fence_fb_obj(dev, obj, NULL); |
| if (ret) { |
| DRM_ERROR("failed to pin fb: %d\n", ret); |
| goto out_unref; |
| } |
| |
| ret = intel_framebuffer_init(dev, &ifbdev->ifb, &mode_cmd, obj); |
| if (ret) |
| goto out_unpin; |
| |
| return 0; |
| |
| out_unpin: |
| i915_gem_object_unpin(obj); |
| out_unref: |
| drm_gem_object_unreference(&obj->base); |
| out: |
| return ret; |
| } |
| |
| static int intelfb_create(struct drm_fb_helper *helper, |
| struct drm_fb_helper_surface_size *sizes) |
| { |
| struct intel_fbdev *ifbdev = |
| container_of(helper, struct intel_fbdev, helper); |
| struct intel_framebuffer *intel_fb = &ifbdev->ifb; |
| struct drm_device *dev = helper->dev; |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| struct fb_info *info; |
| struct drm_framebuffer *fb; |
| struct drm_i915_gem_object *obj; |
| int size, ret; |
| |
| mutex_lock(&dev->struct_mutex); |
| |
| if (!intel_fb->obj) { |
| DRM_DEBUG_KMS("no BIOS fb, allocating a new one\n"); |
| ret = intelfb_alloc(helper, sizes); |
| if (ret) |
| goto out_unlock; |
| } else { |
| DRM_DEBUG_KMS("re-using BIOS fb\n"); |
| sizes->fb_width = intel_fb->base.width; |
| sizes->fb_height = intel_fb->base.height; |
| } |
| |
| obj = intel_fb->obj; |
| size = obj->base.size; |
| |
| info = framebuffer_alloc(0, &dev->pdev->dev); |
| if (!info) { |
| ret = -ENOMEM; |
| goto out_unpin; |
| } |
| |
| info->par = helper; |
| |
| fb = &ifbdev->ifb.base; |
| |
| ifbdev->helper.fb = fb; |
| ifbdev->helper.fbdev = info; |
| |
| strcpy(info->fix.id, "inteldrmfb"); |
| |
| info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT; |
| info->fbops = &intelfb_ops; |
| |
| /* setup aperture base/size for vesafb takeover */ |
| info->apertures = alloc_apertures(1); |
| if (!info->apertures) { |
| ret = -ENOMEM; |
| goto out_unpin; |
| } |
| info->apertures->ranges[0].base = dev->mode_config.fb_base; |
| info->apertures->ranges[0].size = dev_priv->gtt.mappable_end; |
| |
| |
| info->screen_base = (void*) 0xFE000000; |
| info->screen_size = size; |
| |
| /* This driver doesn't need a VT switch to restore the mode on resume */ |
| info->skip_vt_switch = true; |
| |
| drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth); |
| drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height); |
| |
| /* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */ |
| |
| DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08lx, bo %p\n", |
| fb->width, fb->height, |
| i915_gem_obj_ggtt_offset(obj), obj); |
| |
| mutex_unlock(&dev->struct_mutex); |
| return 0; |
| |
| out_unpin: |
| i915_gem_object_unpin(obj); |
| drm_gem_object_unreference(&obj->base); |
| out_unlock: |
| mutex_unlock(&dev->struct_mutex); |
| return ret; |
| } |
| |
| /** Sets the color ramps on behalf of RandR */ |
| static void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green, |
| u16 blue, int regno) |
| { |
| struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
| |
| intel_crtc->lut_r[regno] = red >> 8; |
| intel_crtc->lut_g[regno] = green >> 8; |
| intel_crtc->lut_b[regno] = blue >> 8; |
| } |
| |
| static void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green, |
| u16 *blue, int regno) |
| { |
| struct intel_crtc *intel_crtc = to_intel_crtc(crtc); |
| |
| *red = intel_crtc->lut_r[regno] << 8; |
| *green = intel_crtc->lut_g[regno] << 8; |
| *blue = intel_crtc->lut_b[regno] << 8; |
| } |
| |
| static struct drm_fb_helper_funcs intel_fb_helper_funcs = { |
| .gamma_set = intel_crtc_fb_gamma_set, |
| .gamma_get = intel_crtc_fb_gamma_get, |
| .fb_probe = intelfb_create, |
| }; |
| |
| |
| int intel_fbdev_init(struct drm_device *dev) |
| { |
| struct intel_fbdev *ifbdev; |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| int ret; |
| |
| ifbdev = kzalloc(sizeof(*ifbdev), GFP_KERNEL); |
| if (!ifbdev) |
| return -ENOMEM; |
| |
| dev_priv->fbdev = ifbdev; |
| ifbdev->helper.funcs = &intel_fb_helper_funcs; |
| |
| ret = drm_fb_helper_init(dev, &ifbdev->helper, |
| INTEL_INFO(dev)->num_pipes, |
| 4); |
| if (ret) { |
| kfree(ifbdev); |
| return ret; |
| } |
| |
| drm_fb_helper_single_add_all_connectors(&ifbdev->helper); |
| |
| return 0; |
| } |
| |
| void intel_fbdev_initial_config(struct drm_device *dev) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| |
| /* Due to peculiar init order wrt to hpd handling this is separate. */ |
| drm_fb_helper_initial_config(&dev_priv->fbdev->helper, 32); |
| } |
| |
| |
| void intel_fbdev_output_poll_changed(struct drm_device *dev) |
| { |
| struct drm_i915_private *dev_priv = dev->dev_private; |
| drm_fb_helper_hotplug_event(&dev_priv->fbdev->helper); |
| } |