/*
|
* Copyright (C) 2013-2017 Oracle Corporation
|
* This file is based on ast_fb.c
|
* Copyright 2012 Red Hat Inc.
|
*
|
* 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, sub license, 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 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 NON-INFRINGEMENT. IN NO EVENT SHALL
|
* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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.
|
*
|
* The above copyright notice and this permission notice (including the
|
* next paragraph) shall be included in all copies or substantial portions
|
* of the Software.
|
*
|
* Authors: Dave Airlie <airlied@redhat.com>
|
* Michael Thayer <michael.thayer@oracle.com,
|
*/
|
#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 <drm/drmP.h>
|
#include <drm/drm_crtc.h>
|
#include <drm/drm_fb_helper.h>
|
#include <drm/drm_crtc_helper.h>
|
|
#include "vbox_drv.h"
|
#include "vboxvideo.h"
|
|
#ifdef CONFIG_DRM_KMS_FB_HELPER
|
static struct fb_deferred_io vbox_defio = {
|
.delay = HZ / 30,
|
.deferred_io = drm_fb_helper_deferred_io,
|
};
|
#endif
|
|
static struct fb_ops vboxfb_ops = {
|
.owner = THIS_MODULE,
|
.fb_check_var = drm_fb_helper_check_var,
|
.fb_set_par = drm_fb_helper_set_par,
|
.fb_fillrect = drm_fb_helper_sys_fillrect,
|
.fb_copyarea = drm_fb_helper_sys_copyarea,
|
.fb_imageblit = drm_fb_helper_sys_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 vboxfb_create_object(struct vbox_fbdev *fbdev,
|
struct DRM_MODE_FB_CMD *mode_cmd,
|
struct drm_gem_object **gobj_p)
|
{
|
struct drm_device *dev = fbdev->helper.dev;
|
u32 size;
|
struct drm_gem_object *gobj;
|
u32 pitch = mode_cmd->pitches[0];
|
int ret;
|
|
size = pitch * mode_cmd->height;
|
ret = vbox_gem_create(dev, size, true, &gobj);
|
if (ret)
|
return ret;
|
|
*gobj_p = gobj;
|
|
return 0;
|
}
|
|
static int vboxfb_create(struct drm_fb_helper *helper,
|
struct drm_fb_helper_surface_size *sizes)
|
{
|
struct vbox_fbdev *fbdev =
|
container_of(helper, struct vbox_fbdev, helper);
|
struct drm_device *dev = fbdev->helper.dev;
|
struct DRM_MODE_FB_CMD mode_cmd;
|
struct drm_framebuffer *fb;
|
struct fb_info *info;
|
struct drm_gem_object *gobj;
|
struct vbox_bo *bo;
|
int size, ret;
|
u32 pitch;
|
|
mode_cmd.width = sizes->surface_width;
|
mode_cmd.height = sizes->surface_height;
|
pitch = mode_cmd.width * ((sizes->surface_bpp + 7) / 8);
|
mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
|
sizes->surface_depth);
|
mode_cmd.pitches[0] = pitch;
|
|
size = pitch * mode_cmd.height;
|
|
ret = vboxfb_create_object(fbdev, &mode_cmd, &gobj);
|
if (ret) {
|
DRM_ERROR("failed to create fbcon backing object %d\n", ret);
|
return ret;
|
}
|
|
ret = vbox_framebuffer_init(dev, &fbdev->afb, &mode_cmd, gobj);
|
if (ret)
|
return ret;
|
|
bo = gem_to_vbox_bo(gobj);
|
|
ret = vbox_bo_reserve(bo, false);
|
if (ret)
|
return ret;
|
|
ret = vbox_bo_pin(bo, TTM_PL_FLAG_VRAM, NULL);
|
if (ret) {
|
vbox_bo_unreserve(bo);
|
return ret;
|
}
|
|
ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &bo->kmap);
|
vbox_bo_unreserve(bo);
|
if (ret) {
|
DRM_ERROR("failed to kmap fbcon\n");
|
return ret;
|
}
|
|
info = drm_fb_helper_alloc_fbi(helper);
|
if (IS_ERR(info))
|
return -PTR_ERR(info);
|
|
info->par = fbdev;
|
|
fbdev->size = size;
|
|
fb = &fbdev->afb.base;
|
fbdev->helper.fb = fb;
|
|
strcpy(info->fix.id, "vboxdrmfb");
|
|
/*
|
* The last flag forces a mode set on VT switches even if the kernel
|
* does not think it is needed.
|
*/
|
info->flags = FBINFO_DEFAULT | FBINFO_CAN_FORCE_OUTPUT |
|
FBINFO_MISC_ALWAYS_SETPAR;
|
info->fbops = &vboxfb_ops;
|
|
/*
|
* This seems to be done for safety checking that the framebuffer
|
* is not registered twice by different drivers.
|
*/
|
info->apertures->ranges[0].base = pci_resource_start(dev->pdev, 0);
|
info->apertures->ranges[0].size = pci_resource_len(dev->pdev, 0);
|
|
drm_fb_helper_fill_fix(info, fb->pitches[0], fb->format->depth);
|
drm_fb_helper_fill_var(info, &fbdev->helper, sizes->fb_width,
|
sizes->fb_height);
|
|
info->screen_base = (char __iomem *)bo->kmap.virtual;
|
info->screen_size = size;
|
|
#ifdef CONFIG_DRM_KMS_FB_HELPER
|
info->fbdefio = &vbox_defio;
|
fb_deferred_io_init(info);
|
#endif
|
|
info->pixmap.flags = FB_PIXMAP_SYSTEM;
|
|
DRM_DEBUG_KMS("allocated %dx%d\n", fb->width, fb->height);
|
|
return 0;
|
}
|
|
static struct drm_fb_helper_funcs vbox_fb_helper_funcs = {
|
.fb_probe = vboxfb_create,
|
};
|
|
void vbox_fbdev_fini(struct drm_device *dev)
|
{
|
struct vbox_private *vbox = dev->dev_private;
|
struct vbox_fbdev *fbdev = vbox->fbdev;
|
struct vbox_framebuffer *afb = &fbdev->afb;
|
|
#ifdef CONFIG_DRM_KMS_FB_HELPER
|
if (fbdev->helper.fbdev && fbdev->helper.fbdev->fbdefio)
|
fb_deferred_io_cleanup(fbdev->helper.fbdev);
|
#endif
|
|
drm_fb_helper_unregister_fbi(&fbdev->helper);
|
|
if (afb->obj) {
|
struct vbox_bo *bo = gem_to_vbox_bo(afb->obj);
|
|
if (!vbox_bo_reserve(bo, false)) {
|
if (bo->kmap.virtual)
|
ttm_bo_kunmap(&bo->kmap);
|
/*
|
* QXL does this, but is it really needed before
|
* freeing?
|
*/
|
if (bo->pin_count)
|
vbox_bo_unpin(bo);
|
vbox_bo_unreserve(bo);
|
}
|
drm_gem_object_put_unlocked(afb->obj);
|
afb->obj = NULL;
|
}
|
drm_fb_helper_fini(&fbdev->helper);
|
|
drm_framebuffer_unregister_private(&afb->base);
|
drm_framebuffer_cleanup(&afb->base);
|
}
|
|
int vbox_fbdev_init(struct drm_device *dev)
|
{
|
struct vbox_private *vbox = dev->dev_private;
|
struct vbox_fbdev *fbdev;
|
int ret;
|
|
fbdev = devm_kzalloc(dev->dev, sizeof(*fbdev), GFP_KERNEL);
|
if (!fbdev)
|
return -ENOMEM;
|
|
vbox->fbdev = fbdev;
|
spin_lock_init(&fbdev->dirty_lock);
|
|
drm_fb_helper_prepare(dev, &fbdev->helper, &vbox_fb_helper_funcs);
|
ret = drm_fb_helper_init(dev, &fbdev->helper, vbox->num_crtcs);
|
if (ret)
|
return ret;
|
|
ret = drm_fb_helper_single_add_all_connectors(&fbdev->helper);
|
if (ret)
|
goto err_fini;
|
|
/* disable all the possible outputs/crtcs before entering KMS mode */
|
drm_helper_disable_unused_functions(dev);
|
|
ret = drm_fb_helper_initial_config(&fbdev->helper, 32);
|
if (ret)
|
goto err_fini;
|
|
return 0;
|
|
err_fini:
|
drm_fb_helper_fini(&fbdev->helper);
|
return ret;
|
}
|
|
void vbox_fbdev_set_base(struct vbox_private *vbox, unsigned long gpu_addr)
|
{
|
struct fb_info *fbdev = vbox->fbdev->helper.fbdev;
|
|
fbdev->fix.smem_start = fbdev->apertures->ranges[0].base + gpu_addr;
|
fbdev->fix.smem_len = vbox->available_vram_size - gpu_addr;
|
}
|
