linux/drivers/gpu/drm/nouveau/nouveau_fbcon.c
Marcin Kościelnicki 126b544056 drm/nouveau: Fix fbcon on mixed pre-NV50 + NV50 multicard.
We used single shared fbops struct and patched it at fb init time with
pointers to the right variant. On mixed multicard, this meant that
it was either sending NV50-style commands to all cards, or NV04-style
commands to all cards.

Signed-off-by: Marcin Kościelnicki <koriakin@0x04.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2010-02-09 12:50:14 +10:00

424 lines
11 KiB
C

/*
* 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 || !chan->accel_done ||
info->state != FBINFO_STATE_RUNNING ||
info->flags & FBINFO_HWACCEL_DISABLED)
return 0;
if (RING_SPACE(chan, 4)) {
nouveau_fbcon_gpu_lockup(info);
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) {
nouveau_fbcon_gpu_lockup(info);
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 struct fb_ops nv04_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 = nv04_fbcon_fillrect,
.fb_copyarea = nv04_fbcon_copyarea,
.fb_imageblit = nv04_fbcon_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 struct fb_ops nv50_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 = nv50_fbcon_fillrect,
.fb_copyarea = nv50_fbcon_copyarea,
.fb_imageblit = nv50_fbcon_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 = roundup(mode_cmd.pitch, 256);
mode_cmd.depth = surface_depth;
size = mode_cmd.pitch * mode_cmd.height;
size = roundup(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");
if (nouveau_nofbaccel)
info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_DISABLED;
else
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;
if (dev_priv->channel && !nouveau_nofbaccel) {
switch (dev_priv->card_type) {
case NV_50:
nv50_fbcon_accel_init(info);
info->fbops = &nv50_fbcon_ops;
break;
default:
nv04_fbcon_accel_init(info);
info->fbops = &nv04_fbcon_ops;
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;
}
void nouveau_fbcon_gpu_lockup(struct fb_info *info)
{
struct nouveau_fbcon_par *par = info->par;
struct drm_device *dev = par->dev;
NV_ERROR(dev, "GPU lockup - switching to software fbcon\n");
info->flags |= FBINFO_HWACCEL_DISABLED;
}