/*
* 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 <linux/screen_info.h>
#include "drmP.h"
#include "drm.h"
#include "drm_crtc.h"
#include "drm_crtc_helper.h"
#include "drm_fb_helper.h"
#include "nouveau_drv.h"
#include "nouveau_drm.h"
#include "nouveau_crtc.h"
#include "nouveau_fb.h"
#include "nouveau_fbcon.h"
#include "nouveau_dma.h"
static int
nouveau_fbcon_sync(struct fb_info *info)
{
struct nouveau_fbcon_par *par = info->par;
struct drm_device *dev = par->dev;
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct nouveau_channel *chan = dev_priv->channel;
int ret, i;
if (!chan->accel_done ||
info->state != FBINFO_STATE_RUNNING ||
info->flags & FBINFO_HWACCEL_DISABLED)
return 0;
if (RING_SPACE(chan, 4)) {
NV_ERROR(dev, "GPU lockup - switching to software fbcon\n");
info->flags |= FBINFO_HWACCEL_DISABLED;
return 0;
}
BEGIN_RING(chan, 0, 0x0104, 1);
OUT_RING(chan, 0);
BEGIN_RING(chan, 0, 0x0100, 1);
OUT_RING(chan, 0);
nouveau_bo_wr32(chan->notifier_bo, chan->m2mf_ntfy + 3, 0xffffffff);
FIRE_RING(chan);
ret = -EBUSY;
for (i = 0; i < 100000; i++) {
if (!nouveau_bo_rd32(chan->notifier_bo, chan->m2mf_ntfy + 3)) {
ret = 0;
break;
}
DRM_UDELAY(1);
}
if (ret) {
NV_ERROR(dev, "GPU lockup - switching to software fbcon\n");
info->flags |= FBINFO_HWACCEL_DISABLED;
return 0;
}
chan->accel_done = false;
return 0;
}
static struct fb_ops nouveau_fbcon_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_sync = nouveau_fbcon_sync,
.fb_pan_display = drm_fb_helper_pan_display,
.fb_blank = drm_fb_helper_blank,
.fb_setcmap = drm_fb_helper_setcmap,
};
static void nouveau_fbcon_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
u16 blue, int regno)
{
struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
nv_crtc->lut.r[regno] = red;
nv_crtc->lut.g[regno] = green;
nv_crtc->lut.b[regno] = blue;
}
static void nouveau_fbcon_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
u16 *blue, int regno)
{
struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
*red = nv_crtc->lut.r[regno];
*green = nv_crtc->lut.g[regno];
*blue = nv_crtc->lut.b[regno];
}
static struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
.gamma_set = nouveau_fbcon_gamma_set,
.gamma_get = nouveau_fbcon_gamma_get
};
#if defined(__i386__) || defined(__x86_64__)
static bool
nouveau_fbcon_has_vesafb_or_efifb(struct drm_device *dev)
{
struct pci_dev *pdev = dev->pdev;
int ramin;
if (screen_info.orig_video_isVGA != VIDEO_TYPE_VLFB &&
screen_info.orig_video_isVGA != VIDEO_TYPE_EFI)
return false;
if (screen_info.lfb_base < pci_resource_start(pdev, 1))
goto not_fb;
if (screen_info.lfb_base + screen_info.lfb_size >=
pci_resource_start(pdev, 1) + pci_resource_len(pdev, 1))
goto not_fb;
return true;
not_fb:
ramin = 2;
if (pci_resource_len(pdev, ramin) == 0) {
ramin = 3;
if (pci_resource_len(pdev, ramin) == 0)
return false;
}
if (screen_info.lfb_base < pci_resource_start(pdev, ramin))
return false;
if (screen_info.lfb_base + screen_info.lfb_size >=
pci_resource_start(pdev, ramin) + pci_resource_len(pdev, ramin))
return false;
return true;
}
#endif
void
nouveau_fbcon_zfill(struct drm_device *dev)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct fb_info *info = dev_priv->fbdev_info;
struct fb_fillrect rect;
/* Clear the entire fbcon. The drm will program every connector
* with it's preferred mode. If the sizes differ, one display will
* quite likely have garbage around the console.
*/
rect.dx = rect.dy = 0;
rect.width = info->var.xres_virtual;
rect.height = info->var.yres_virtual;
rect.color = 0;
rect.rop = ROP_COPY;
info->fbops->fb_fillrect(info, &rect);
}
static int
nouveau_fbcon_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 **pfb)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
struct fb_info *info;
struct nouveau_fbcon_par *par;
struct drm_framebuffer *fb;
struct nouveau_framebuffer *nouveau_fb;
struct nouveau_bo *nvbo;
struct drm_mode_fb_cmd mode_cmd;
struct device *device = &dev->pdev->dev;
int size, ret;
mode_cmd.width = surface_width;
mode_cmd.height = surface_height;
mode_cmd.bpp = surface_bpp;
mode_cmd.pitch = mode_cmd.width * (mode_cmd.bpp >> 3);
mode_cmd.pitch = ALIGN(mode_cmd.pitch, 256);
mode_cmd.depth = surface_depth;
size = mode_cmd.pitch * mode_cmd.height;
size = ALIGN(size, PAGE_SIZE);
ret = nouveau_gem_new(dev, dev_priv->channel, size, 0, TTM_PL_FLAG_VRAM,
0, 0x0000, false, true, &nvbo);
if (ret) {
NV_ERROR(dev, "failed to allocate framebuffer\n");
goto out;
}
ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM);
if (ret) {
NV_ERROR(dev, "failed to pin fb: %d\n", ret);
nouveau_bo_ref(NULL, &nvbo);
goto out;
}
ret = nouveau_bo_map(nvbo);
if (ret) {
NV_ERROR(dev, "failed to map fb: %d\n", ret);
nouveau_bo_unpin(nvbo);
nouveau_bo_ref(NULL, &nvbo);
goto out;
}
mutex_lock(&dev->struct_mutex);
fb = nouveau_framebuffer_create(dev, nvbo, &mode_cmd);
if (!fb) {
ret = -ENOMEM;
NV_ERROR(dev, "failed to allocate fb.\n");
goto out_unref;
}
list_add(&fb->filp_head, &dev->mode_config.fb_kernel_list);
nouveau_fb = nouveau_framebuffer(fb);
*pfb = fb;
info = framebuffer_alloc(sizeof(struct nouveau_fbcon_par), device);
if (!info) {
ret = -ENOMEM;
goto out_unref;
}
par = info->par;
par->helper.funcs = &nouveau_fbcon_helper_funcs;
par->helper.dev = dev;
ret = drm_fb_helper_init_crtc_count(&par->helper, 2, 4);
if (ret)
goto out_unref;
dev_priv->fbdev_info = info;
strcpy(info->fix.id, "nouveaufb");
info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA |
FBINFO_HWACCEL_FILLRECT | FBINFO_HWACCEL_IMAGEBLIT;
info->fbops = &nouveau_fbcon_ops;
info->fix.smem_start = dev->mode_config.fb_base + nvbo->bo.offset -
dev_priv->vm_vram_base;
info->fix.smem_len = size;
info->screen_base = nvbo_kmap_obj_iovirtual(nouveau_fb->nvbo);
info->screen_size = 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, 1);
info->fix.mmio_len = pci_resource_len(dev->pdev, 1);
/* Set aperture base/size for vesafb takeover */
#if defined(__i386__) || defined(__x86_64__)
if (nouveau_fbcon_has_vesafb_or_efifb(dev)) {
/* Some NVIDIA VBIOS' are stupid and decide to put the
* framebuffer in the middle of the PRAMIN BAR for
* whatever reason. We need to know the exact lfb_base
* to get vesafb kicked off, and the only reliable way
* we have left is to find out lfb_base the same way
* vesafb did.
*/
info->aperture_base = screen_info.lfb_base;
info->aperture_size = screen_info.lfb_size;
if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB)
info->aperture_size *= 65536;
} else
#endif
{
info->aperture_base = info->fix.mmio_start;
info->aperture_size = info->fix.mmio_len;
}
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->nouveau_fb = nouveau_fb;
par->dev = dev;
switch (dev_priv->card_type) {
case NV_50:
nv50_fbcon_accel_init(info);
break;
default:
nv04_fbcon_accel_init(info);
break;
};
nouveau_fbcon_zfill(dev);
/* To allow resizeing without swapping buffers */
NV_INFO(dev, "allocated %dx%d fb: 0x%lx, bo %p\n",
nouveau_fb->base.width,
nouveau_fb->base.height,
nvbo->bo.offset, nvbo);
mutex_unlock(&dev->struct_mutex);
return 0;
out_unref:
mutex_unlock(&dev->struct_mutex);
out:
return ret;
}
int
nouveau_fbcon_probe(struct drm_device *dev)
{
NV_DEBUG_KMS(dev, "\n");
return drm_fb_helper_single_fb_probe(dev, 32, nouveau_fbcon_create);
}
int
nouveau_fbcon_remove(struct drm_device *dev, struct drm_framebuffer *fb)
{
struct nouveau_framebuffer *nouveau_fb = nouveau_framebuffer(fb);
struct fb_info *info;
if (!fb)
return -EINVAL;
info = fb->fbdev;
if (info) {
struct nouveau_fbcon_par *par = info->par;
unregister_framebuffer(info);
nouveau_bo_unmap(nouveau_fb->nvbo);
mutex_lock(&dev->struct_mutex);
drm_gem_object_unreference(nouveau_fb->nvbo->gem);
nouveau_fb->nvbo = NULL;
mutex_unlock(&dev->struct_mutex);
if (par)
drm_fb_helper_free(&par->helper);
framebuffer_release(info);
}
return 0;
}
