forked from KolibriOS/kolibrios
265 lines
7.1 KiB
C
265 lines
7.1 KiB
C
/*
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* Copyright © 2007 David Airlie
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Authors:
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* David Airlie
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/string.h>
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//#include <linux/mm.h>
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//#include <linux/tty.h>
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#include <linux/sysrq.h>
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//#include <linux/delay.h>
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#include <linux/fb.h>
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//#include <linux/init.h>
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//#include <linux/vga_switcheroo.h>
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#include <drm/drmP.h>
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#include <drm/drm_crtc.h>
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#include <drm/drm_fb_helper.h>
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#include "intel_drv.h"
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#include <drm/i915_drm.h>
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#include "i915_drv.h"
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struct fb_info *framebuffer_alloc(size_t size, struct device *dev)
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{
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#define BYTES_PER_LONG (BITS_PER_LONG/8)
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#define PADDING (BYTES_PER_LONG - (sizeof(struct fb_info) % BYTES_PER_LONG))
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int fb_info_size = sizeof(struct fb_info);
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struct fb_info *info;
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char *p;
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if (size)
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fb_info_size += PADDING;
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p = kzalloc(fb_info_size + size, GFP_KERNEL);
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if (!p)
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return NULL;
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info = (struct fb_info *) p;
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if (size)
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info->par = p + fb_info_size;
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return info;
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#undef PADDING
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#undef BYTES_PER_LONG
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}
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static struct fb_ops intelfb_ops = {
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.owner = THIS_MODULE,
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.fb_check_var = drm_fb_helper_check_var,
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.fb_set_par = drm_fb_helper_set_par,
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// .fb_fillrect = cfb_fillrect,
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// .fb_copyarea = cfb_copyarea,
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// .fb_imageblit = cfb_imageblit,
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// .fb_pan_display = drm_fb_helper_pan_display,
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.fb_blank = drm_fb_helper_blank,
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// .fb_setcmap = drm_fb_helper_setcmap,
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// .fb_debug_enter = drm_fb_helper_debug_enter,
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// .fb_debug_leave = drm_fb_helper_debug_leave,
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};
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static int intelfb_create(struct intel_fbdev *ifbdev,
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struct drm_fb_helper_surface_size *sizes)
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{
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struct drm_device *dev = ifbdev->helper.dev;
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struct drm_i915_private *dev_priv = dev->dev_private;
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struct fb_info *info;
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struct drm_framebuffer *fb;
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struct drm_mode_fb_cmd2 mode_cmd = {};
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struct drm_i915_gem_object *obj;
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struct device *device = &dev->pdev->dev;
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int size, ret;
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/* we don't do packed 24bpp */
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if (sizes->surface_bpp == 24)
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sizes->surface_bpp = 32;
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mode_cmd.width = sizes->surface_width;
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mode_cmd.height = sizes->surface_height;
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mode_cmd.pitches[0] = ALIGN(mode_cmd.width * ((sizes->surface_bpp + 7) /
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8), 64);
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mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
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sizes->surface_depth);
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size = mode_cmd.pitches[0] * mode_cmd.height;
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size = ALIGN(size, PAGE_SIZE);
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obj = i915_gem_alloc_object(dev, size);
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if (!obj) {
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DRM_ERROR("failed to allocate framebuffer\n");
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ret = -ENOMEM;
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goto out;
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}
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mutex_lock(&dev->struct_mutex);
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#if 0
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// skip this part and use existing framebiffer
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/* Flush everything out, we'll be doing GTT only from now on */
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ret = intel_pin_and_fence_fb_obj(dev, obj, false);
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if (ret) {
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DRM_ERROR("failed to pin fb: %d\n", ret);
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goto out_unref;
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}
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#endif
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/***********************************************************************/
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{
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#define LFB_SIZE 0xC00000
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static struct drm_mm_node lfb_vm_node;
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lfb_vm_node.size = LFB_SIZE;
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lfb_vm_node.start = 0;
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lfb_vm_node.mm = NULL;
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obj->gtt_space = &lfb_vm_node;
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obj->gtt_offset = 0;
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obj->pin_count = 2;
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}
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/***********************************************************************/
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info = framebuffer_alloc(0, device);
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if (!info) {
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ret = -ENOMEM;
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goto out_unpin;
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}
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info->par = ifbdev;
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ret = intel_framebuffer_init(dev, &ifbdev->ifb, &mode_cmd, obj);
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if (ret)
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goto out_unpin;
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fb = &ifbdev->ifb.base;
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ifbdev->helper.fb = fb;
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ifbdev->helper.fbdev = info;
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strcpy(info->fix.id, "inteldrmfb");
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info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT;
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info->fbops = &intelfb_ops;
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/* setup aperture base/size for vesafb takeover */
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info->apertures = alloc_apertures(1);
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if (!info->apertures) {
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ret = -ENOMEM;
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goto out_unpin;
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}
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info->apertures->ranges[0].base = dev->mode_config.fb_base;
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info->apertures->ranges[0].size =
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dev_priv->mm.gtt->gtt_mappable_entries << PAGE_SHIFT;
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info->fix.smem_start = dev->mode_config.fb_base + obj->gtt_offset;
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info->fix.smem_len = size;
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info->screen_base = 0xFE000000;
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info->screen_size = size;
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// memset(info->screen_base, 0, size);
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drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
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drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height);
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/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
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DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08x, bo %p\n",
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fb->width, fb->height,
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obj->gtt_offset, obj);
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mutex_unlock(&dev->struct_mutex);
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// vga_switcheroo_client_fb_set(dev->pdev, info);
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return 0;
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out_unpin:
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i915_gem_object_unpin(obj);
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out_unref:
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drm_gem_object_unreference(&obj->base);
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mutex_unlock(&dev->struct_mutex);
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out:
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return ret;
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}
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static int intel_fb_find_or_create_single(struct drm_fb_helper *helper,
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struct drm_fb_helper_surface_size *sizes)
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{
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struct intel_fbdev *ifbdev = (struct intel_fbdev *)helper;
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int new_fb = 0;
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int ret;
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if (!helper->fb) {
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ret = intelfb_create(ifbdev, sizes);
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if (ret)
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return ret;
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new_fb = 1;
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}
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return new_fb;
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}
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static struct drm_fb_helper_funcs intel_fb_helper_funcs = {
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.gamma_set = intel_crtc_fb_gamma_set,
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.gamma_get = intel_crtc_fb_gamma_get,
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.fb_probe = intel_fb_find_or_create_single,
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};
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int intel_fbdev_init(struct drm_device *dev)
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{
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struct intel_fbdev *ifbdev;
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drm_i915_private_t *dev_priv = dev->dev_private;
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int ret;
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ifbdev = kzalloc(sizeof(struct intel_fbdev), GFP_KERNEL);
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if (!ifbdev)
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return -ENOMEM;
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dev_priv->fbdev = ifbdev;
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ifbdev->helper.funcs = &intel_fb_helper_funcs;
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ret = drm_fb_helper_init(dev, &ifbdev->helper,
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dev_priv->num_pipe,
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INTELFB_CONN_LIMIT);
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if (ret) {
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kfree(ifbdev);
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return ret;
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}
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drm_fb_helper_single_add_all_connectors(&ifbdev->helper);
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drm_fb_helper_initial_config(&ifbdev->helper, 32);
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return 0;
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}
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