/*
* 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 "drmP.h"
#include "drm.h"
#include "drm_crtc.h"
#include "drm_fb_helper.h"
#include "intel_drv.h"
#include "i915_drm.h"
#include "i915_drv.h"
struct intel_fbdev {
struct drm_fb_helper helper;
struct intel_framebuffer ifb;
struct list_head fbdev_list;
struct drm_display_mode *our_mode;
};
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,
};
static int intelfb_create(struct intel_fbdev *ifbdev,
struct drm_fb_helper_surface_size *sizes)
{
struct drm_device *dev = ifbdev->helper.dev;
struct fb_info *info;
struct drm_framebuffer *fb;
struct drm_mode_fb_cmd mode_cmd;
struct drm_gem_object *fbo = NULL;
struct drm_i915_gem_object *obj_priv;
struct device *device = &dev->pdev->dev;
int size, ret, mmio_bar = IS_I9XX(dev) ? 0 : 1;
/* 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.bpp = sizes->surface_bpp;
mode_cmd.pitch = ALIGN(mode_cmd.width * ((mode_cmd.bpp + 1) / 8), 64);
mode_cmd.depth = sizes->surface_depth;
size = mode_cmd.pitch * mode_cmd.height;
size = ALIGN(size, PAGE_SIZE);
fbo = i915_gem_alloc_object(dev, size);
if (!fbo) {
DRM_ERROR("failed to allocate framebuffer\n");
ret = -ENOMEM;
goto out;
}
obj_priv = to_intel_bo(fbo);
mutex_lock(&dev->struct_mutex);
ret = i915_gem_object_pin(fbo, 64*1024);
if (ret) {
DRM_ERROR("failed to pin fb: %d\n", ret);
goto out_unref;
}
/* Flush everything out, we'll be doing GTT only from now on */
ret = i915_gem_object_set_to_gtt_domain(fbo, 1);
if (ret) {
DRM_ERROR("failed to bind fb: %d.\n", ret);
goto out_unpin;
}
info = framebuffer_alloc(0, device);
if (!info) {
ret = -ENOMEM;
goto out_unpin;
}
info->par = ifbdev;
intel_framebuffer_init(dev, &ifbdev->ifb, &mode_cmd, fbo);
fb = &ifbdev->ifb.base;
ifbdev->helper.fb = fb;
ifbdev->helper.fbdev = info;
strcpy(info->fix.id, "inteldrmfb");
info->flags = FBINFO_DEFAULT;
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;
if (IS_I9XX(dev))
info->apertures->ranges[0].size = pci_resource_len(dev->pdev, 2);
else
info->apertures->ranges[0].size = pci_resource_len(dev->pdev, 0);
info->fix.smem_start = dev->mode_config.fb_base + obj_priv->gtt_offset;
info->fix.smem_len = size;
info->flags = FBINFO_DEFAULT;
info->screen_base = ioremap_wc(dev->agp->base + obj_priv->gtt_offset,
size);
if (!info->screen_base) {
ret = -ENOSPC;
goto out_unpin;
}
ret = fb_alloc_cmap(&info->cmap, 256, 0);
if (ret) {
ret = -ENOMEM;
goto out_unpin;
}
info->screen_size = size;
// memset(info->screen_base, 0, size);
drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
drm_fb_helper_fill_var(info, &ifbdev->helper, sizes->fb_width, sizes->fb_height);
/* FIXME: we really shouldn't expose mmio space at all */
info->fix.mmio_start = pci_resource_start(dev->pdev, mmio_bar);
info->fix.mmio_len = pci_resource_len(dev->pdev, mmio_bar);
info->pixmap.size = 64*1024;
info->pixmap.buf_align = 8;
info->pixmap.access_align = 32;
info->pixmap.flags = FB_PIXMAP_SYSTEM;
info->pixmap.scan_align = 1;
DRM_DEBUG_KMS("allocated %dx%d fb: 0x%08x, bo %p\n",
fb->width, fb->height,
obj_priv->gtt_offset, fbo);
mutex_unlock(&dev->struct_mutex);
vga_switcheroo_client_fb_set(dev->pdev, info);
return 0;
out_unpin:
i915_gem_object_unpin(fbo);
out_unref:
drm_gem_object_unreference(fbo);
mutex_unlock(&dev->struct_mutex);
out:
return ret;
}
static int intel_fb_find_or_create_single(struct drm_fb_helper *helper,
struct drm_fb_helper_surface_size *sizes)
{
struct intel_fbdev *ifbdev = (struct intel_fbdev *)helper;
int new_fb = 0;
int ret;
if (!helper->fb) {
ret = intelfb_create(ifbdev, sizes);
if (ret)
return ret;
new_fb = 1;
}
return new_fb;
}
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 = intel_fb_find_or_create_single,
};
int intel_fbdev_destroy(struct drm_device *dev,
struct intel_fbdev *ifbdev)
{
struct fb_info *info;
struct intel_framebuffer *ifb = &ifbdev->ifb;
if (ifbdev->helper.fbdev) {
info = ifbdev->helper.fbdev;
unregister_framebuffer(info);
iounmap(info->screen_base);
if (info->cmap.len)
fb_dealloc_cmap(&info->cmap);
framebuffer_release(info);
}
drm_fb_helper_fini(&ifbdev->helper);
drm_framebuffer_cleanup(&ifb->base);
if (ifb->obj)
drm_gem_object_unreference_unlocked(ifb->obj);
return 0;
}
int intel_fbdev_init(struct drm_device *dev)
{
struct intel_fbdev *ifbdev;
drm_i915_private_t *dev_priv = dev->dev_private;
int ret;
ifbdev = kzalloc(sizeof(struct intel_fbdev), 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,
dev_priv->num_pipe,
INTELFB_CONN_LIMIT);
if (ret) {
kfree(ifbdev);
return ret;
}
drm_fb_helper_single_add_all_connectors(&ifbdev->helper);
drm_fb_helper_initial_config(&ifbdev->helper, 32);
return 0;
}
void intel_fbdev_fini(struct drm_device *dev)
{
drm_i915_private_t *dev_priv = dev->dev_private;
if (!dev_priv->fbdev)
return;
intel_fbdev_destroy(dev, dev_priv->fbdev);
kfree(dev_priv->fbdev);
dev_priv->fbdev = NULL;
}
MODULE_LICENSE("GPL and additional rights");
void intel_fb_output_poll_changed(struct drm_device *dev)
{
drm_i915_private_t *dev_priv = dev->dev_private;
drm_fb_helper_hotplug_event(&dev_priv->fbdev->helper);
}
