/*
* 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
*/
/*
* Modularization
*/
#include <linux/module.h>
#include <linux/fb.h>
#include "drmP.h"
#include "drm.h"
#include "drm_crtc.h"
#include "drm_crtc_helper.h"
#include "radeon_drm.h"
#include "radeon.h"
#include "drm_fb_helper.h"
struct radeon_fb_device {
struct drm_fb_helper helper;
struct radeon_framebuffer *rfb;
struct radeon_device *rdev;
};
static struct fb_ops radeonfb_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,
};
/**
* Curretly it is assumed that the old framebuffer is reused.
*
* LOCKING
* caller should hold the mode config lock.
*
*/
int radeonfb_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 == NULL) {
return 1;
}
info = fb->fbdev;
if (info == NULL) {
return 1;
}
if (mode == NULL) {
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(radeonfb_resize);
static int radeon_align_pitch(struct radeon_device *rdev, int width, int bpp, bool tiled)
{
int aligned = width;
int align_large = (ASIC_IS_AVIVO(rdev)) || tiled;
int pitch_mask = 0;
switch (bpp / 8) {
case 1:
pitch_mask = align_large ? 255 : 127;
break;
case 2:
pitch_mask = align_large ? 127 : 31;
break;
case 3:
case 4:
pitch_mask = align_large ? 63 : 15;
break;
}
aligned += pitch_mask;
aligned &= ~pitch_mask;
return aligned;
}
static struct drm_fb_helper_funcs radeon_fb_helper_funcs = {
.gamma_set = radeon_crtc_fb_gamma_set,
};
int radeonfb_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 radeon_device *rdev = dev->dev_private;
struct fb_info *info;
struct radeon_fb_device *rfbdev;
struct drm_framebuffer *fb = NULL;
struct radeon_framebuffer *rfb;
struct drm_mode_fb_cmd mode_cmd;
struct drm_gem_object *gobj = NULL;
struct radeon_object *robj = NULL;
struct device *device = &rdev->pdev->dev;
int size, aligned_size, ret;
u64 fb_gpuaddr;
void *fbptr = NULL;
unsigned long tmp;
bool fb_tiled = false; /* useful for testing */
u32 tiling_flags = 0;
int crtc_count;
mode_cmd.width = surface_width;
mode_cmd.height = surface_height;
mode_cmd.bpp = surface_bpp;
/* need to align pitch with crtc limits */
mode_cmd.pitch = radeon_align_pitch(rdev, mode_cmd.width, mode_cmd.bpp, fb_tiled) * ((mode_cmd.bpp + 1) / 8);
mode_cmd.depth = surface_depth;
size = mode_cmd.pitch * mode_cmd.height;
aligned_size = ALIGN(size, PAGE_SIZE);
ret = radeon_gem_object_create(rdev, aligned_size, 0,
RADEON_GEM_DOMAIN_VRAM,
false, ttm_bo_type_kernel,
false, &gobj);
if (ret) {
printk(KERN_ERR "failed to allocate framebuffer (%d %d)\n",
surface_width, surface_height);
ret = -ENOMEM;
goto out;
}
robj = gobj->driver_private;
if (fb_tiled)
tiling_flags = RADEON_TILING_MACRO;
#ifdef __BIG_ENDIAN
switch (mode_cmd.bpp) {
case 32:
tiling_flags |= RADEON_TILING_SWAP_32BIT;
break;
case 16:
tiling_flags |= RADEON_TILING_SWAP_16BIT;
default:
break;
}
#endif
if (tiling_flags)
radeon_object_set_tiling_flags(robj, tiling_flags | RADEON_TILING_SURFACE, mode_cmd.pitch);
mutex_lock(&rdev->ddev->struct_mutex);
fb = radeon_framebuffer_create(rdev->ddev, &mode_cmd, gobj);
if (fb == NULL) {
DRM_ERROR("failed to allocate fb.\n");
ret = -ENOMEM;
goto out_unref;
}
ret = radeon_object_pin(robj, RADEON_GEM_DOMAIN_VRAM, &fb_gpuaddr);
if (ret) {
printk(KERN_ERR "failed to pin framebuffer\n");
ret = -ENOMEM;
goto out_unref;
}
list_add(&fb->filp_head, &rdev->ddev->mode_config.fb_kernel_list);
*fb_p = fb;
rfb = to_radeon_framebuffer(fb);
rdev->fbdev_rfb = rfb;
rdev->fbdev_robj = robj;
info = framebuffer_alloc(sizeof(struct radeon_fb_device), device);
if (info == NULL) {
ret = -ENOMEM;
goto out_unref;
}
rdev->fbdev_info = info;
rfbdev = info->par;
rfbdev->helper.funcs = &radeon_fb_helper_funcs;
rfbdev->helper.dev = dev;
if (rdev->flags & RADEON_SINGLE_CRTC)
crtc_count = 1;
else
crtc_count = 2;
ret = drm_fb_helper_init_crtc_count(&rfbdev->helper, crtc_count,
RADEONFB_CONN_LIMIT);
if (ret)
goto out_unref;
if (fb_tiled)
radeon_object_check_tiling(robj, 0, 0);
ret = radeon_object_kmap(robj, &fbptr);
if (ret) {
goto out_unref;
}
memset_io(fbptr, 0, aligned_size);
strcpy(info->fix.id, "radeondrmfb");
drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
info->flags = FBINFO_DEFAULT;
info->fbops = &radeonfb_ops;
tmp = fb_gpuaddr - rdev->mc.vram_location;
info->fix.smem_start = rdev->mc.aper_base + tmp;
info->fix.smem_len = size;
info->screen_base = fbptr;
info->screen_size = size;
drm_fb_helper_fill_var(info, fb, fb_width, fb_height);
/* setup aperture base/size for vesafb takeover */
info->aperture_base = rdev->ddev->mode_config.fb_base;
info->aperture_size = rdev->mc.real_vram_size;
info->fix.mmio_start = 0;
info->fix.mmio_len = 0;
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;
if (info->screen_base == NULL) {
ret = -ENOSPC;
goto out_unref;
}
DRM_INFO("fb mappable at 0x%lX\n", info->fix.smem_start);
DRM_INFO("vram apper at 0x%lX\n", (unsigned long)rdev->mc.aper_base);
DRM_INFO("size %lu\n", (unsigned long)size);
DRM_INFO("fb depth is %d\n", fb->depth);
DRM_INFO(" pitch is %d\n", fb->pitch);
fb->fbdev = info;
rfbdev->rfb = rfb;
rfbdev->rdev = rdev;
mutex_unlock(&rdev->ddev->struct_mutex);
return 0;
out_unref:
if (robj) {
radeon_object_kunmap(robj);
}
if (fb && ret) {
list_del(&fb->filp_head);
drm_gem_object_unreference(gobj);
drm_framebuffer_cleanup(fb);
kfree(fb);
}
drm_gem_object_unreference(gobj);
mutex_unlock(&rdev->ddev->struct_mutex);
out:
return ret;
}
static char *mode_option;
int radeon_parse_options(char *options)
{
char *this_opt;
if (!options || !*options)
return 0;
while ((this_opt = strsep(&options, ",")) != NULL) {
if (!*this_opt)
continue;
mode_option = this_opt;
}
return 0;
}
int radeonfb_probe(struct drm_device *dev)
{
return drm_fb_helper_single_fb_probe(dev, &radeonfb_create);
}
int radeonfb_remove(struct drm_device *dev, struct drm_framebuffer *fb)
{
struct fb_info *info;
struct radeon_framebuffer *rfb = to_radeon_framebuffer(fb);
struct radeon_object *robj;
if (!fb) {
return -EINVAL;
}
info = fb->fbdev;
if (info) {
struct radeon_fb_device *rfbdev = info->par;
robj = rfb->obj->driver_private;
unregister_framebuffer(info);
radeon_object_kunmap(robj);
radeon_object_unpin(robj);
drm_fb_helper_free(&rfbdev->helper);
framebuffer_release(info);
}
printk(KERN_INFO "unregistered panic notifier\n");
return 0;
}
EXPORT_SYMBOL(radeonfb_remove);
MODULE_LICENSE("GPL");
