/*
* 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/slab.h>
#include <linux/sysrq.h>
#include <linux/delay.h>
#include <linux/fb.h>
#include <linux/init.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 intelfb_par {
struct drm_fb_helper helper;
struct intel_framebuffer *intel_fb;
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_setcolreg = drm_fb_helper_setcolreg,
.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 struct drm_fb_helper_funcs intel_fb_helper_funcs = {
.gamma_set = intel_crtc_fb_gamma_set,
.gamma_get = intel_crtc_fb_gamma_get,
};
/**
* Curretly it is assumed that the old framebuffer is reused.
*
* LOCKING
* caller should hold the mode config lock.
*
*/
int intelfb_resize(struct drm_device *dev, struct drm_crtc *crtc)
{
struct fb_info *info;
struct drm_framebuffer *fb;
struct drm_display_mode *mode = crtc->desired_mode;
fb = crtc->fb;
if (!fb)
return 1;
info = fb->fbdev;
if (!info)
return 1;
if (!mode)
return 1;
info->var.xres = mode->hdisplay;
info->var.right_margin = mode->hsync_start - mode->hdisplay;
info->var.hsync_len = mode->hsync_end - mode->hsync_start;
info->var.left_margin = mode->htotal - mode->hsync_end;
info->var.yres = mode->vdisplay;
info->var.lower_margin = mode->vsync_start - mode->vdisplay;
info->var.vsync_len = mode->vsync_end - mode->vsync_start;
info->var.upper_margin = mode->vtotal - mode->vsync_end;
info->var.pixclock = 10000000 / mode->htotal * 1000 / mode->vtotal * 100;
/* avoid overflow */
info->var.pixclock = info->var.pixclock * 1000 / mode->vrefresh;
return 0;
}
EXPORT_SYMBOL(intelfb_resize);
static int intelfb_create(struct drm_device *dev, uint32_t fb_width,
uint32_t fb_height, uint32_t surface_width,
uint32_t surface_height,
uint32_t surface_depth, uint32_t surface_bpp,
struct drm_framebuffer **fb_p)
{
struct fb_info *info;
struct intelfb_par *par;
struct drm_framebuffer *fb;
struct intel_framebuffer *intel_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 (surface_bpp == 24)
surface_bpp = 32;
mode_cmd.width = surface_width;
mode_cmd.height = surface_height;
mode_cmd.bpp = surface_bpp;
mode_cmd.pitch = ALIGN(mode_cmd.width * ((mode_cmd.bpp + 1) / 8), 64);
mode_cmd.depth = surface_depth;
size = mode_cmd.pitch * mode_cmd.height;
size = ALIGN(size, PAGE_SIZE);
fbo = drm_gem_object_alloc(dev, size);
if (!fbo) {
DRM_ERROR("failed to allocate framebuffer\n");
ret = -ENOMEM;
goto out;
}
obj_priv = fbo->driver_private;
mutex_lock(&dev->struct_mutex);
ret = i915_gem_object_pin(fbo, PAGE_SIZE);
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 */
i915_gem_object_set_to_gtt_domain(fbo, 1);
ret = intel_framebuffer_create(dev, &mode_cmd, &fb, fbo);
if (ret) {
DRM_ERROR("failed to allocate fb.\n");
goto out_unpin;
}
list_add(&fb->filp_head, &dev->mode_config.fb_kernel_list);
intel_fb = to_intel_framebuffer(fb);
*fb_p = fb;
info = framebuffer_alloc(sizeof(struct intelfb_par), device);
if (!info) {
ret = -ENOMEM;
goto out_unpin;
}
par = info->par;
par->helper.funcs = &intel_fb_helper_funcs;
par->helper.dev = dev;
ret = drm_fb_helper_init_crtc_count(&par->helper, 2,
INTELFB_CONN_LIMIT);
if (ret)
goto out_unref;
strcpy(info->fix.id, "inteldrmfb");
info->flags = FBINFO_DEFAULT;
info->fbops = &intelfb_ops;
/* setup aperture base/size for vesafb takeover */
info->aperture_base = dev->mode_config.fb_base;
if (IS_I9XX(dev))
info->aperture_size = pci_resource_len(dev->pdev, 2);
else
info->aperture_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;
}
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, fb, fb_width, 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;
fb->fbdev = info;
par->intel_fb = intel_fb;
/* To allow resizeing without swapping buffers */
DRM_DEBUG("allocated %dx%d fb: 0x%08x, bo %p\n", intel_fb->base.width,
intel_fb->base.height, obj_priv->gtt_offset, fbo);
mutex_unlock(&dev->struct_mutex);
return 0;
out_unpin:
i915_gem_object_unpin(fbo);
out_unref:
drm_gem_object_unreference(fbo);
mutex_unlock(&dev->struct_mutex);
out:
return ret;
}
int intelfb_probe(struct drm_device *dev)
{
int ret;
DRM_DEBUG("\n");
ret = drm_fb_helper_single_fb_probe(dev, 32, intelfb_create);
return ret;
}
EXPORT_SYMBOL(intelfb_probe);
int intelfb_remove(struct drm_device *dev, struct drm_framebuffer *fb)
{
struct fb_info *info;
if (!fb)
return -EINVAL;
info = fb->fbdev;
if (info) {
struct intelfb_par *par = info->par;
unregister_framebuffer(info);
iounmap(info->screen_base);
if (info->par)
drm_fb_helper_free(&par->helper);
framebuffer_release(info);
}
return 0;
}
EXPORT_SYMBOL(intelfb_remove);
MODULE_LICENSE("GPL and additional rights");
