[deliverable/linux.git] / drivers / gpu / drm / nouveau / nouveau_fbcon.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 <linux/vga_switcheroo.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_fbdev *nfbdev = info->par;
	struct drm_device *dev = nfbdev->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

static void
nouveau_fbcon_zfill(struct drm_device *dev, struct nouveau_fbdev *nfbdev)
{
	struct fb_info *info = nfbdev->helper.fbdev;
	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 nouveau_fbdev *nfbdev,
		     struct drm_fb_helper_surface_size *sizes)
{
	struct drm_device *dev = nfbdev->dev;
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct fb_info *info;
	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 = sizes->surface_width;
	mode_cmd.height = sizes->surface_height;

	mode_cmd.bpp = sizes->surface_bpp;
	mode_cmd.pitch = mode_cmd.width * (mode_cmd.bpp >> 3);
	mode_cmd.pitch = roundup(mode_cmd.pitch, 256);
	mode_cmd.depth = sizes->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);

	info = framebuffer_alloc(0, device);
	if (!info) {
		ret = -ENOMEM;
		goto out_unref;
	}

	info->par = nfbdev;

	nouveau_framebuffer_init(dev, &nfbdev->nouveau_fb, &mode_cmd, nvbo);

	nouveau_fb = &nfbdev->nouveau_fb;
	fb = &nouveau_fb->base;

	/* setup helper */
	nfbdev->helper.fb = fb;
	nfbdev->helper.fbdev = info;
	nfbdev->helper.funcs = &nouveau_fbcon_helper_funcs;

	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, &nfbdev->helper, sizes->fb_width, sizes->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;

	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, nfbdev);

	/* 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);
	vga_switcheroo_client_fb_set(dev->pdev, info);
	return 0;

out_unref:
	mutex_unlock(&dev->struct_mutex);
out:
	return ret;
}

static int
nouveau_fbcon_find_or_create_single(struct drm_fb_helper *helper,
				    struct drm_fb_helper_surface_size *sizes)
{
	struct nouveau_fbdev *nfbdev = (struct nouveau_fbdev *)helper;
	int new_fb = 0;
	int ret;

	if (!helper->fb) {
		ret = nouveau_fbcon_create(nfbdev, sizes);
		if (ret)
			return ret;
		new_fb = 1;
	}
	return new_fb;
}

static int
nouveau_fbcon_probe(struct nouveau_fbdev *nfbdev)
{
	NV_DEBUG_KMS(nfbdev->dev, "\n");

	return drm_fb_helper_single_fb_probe(&nfbdev->helper, 32);
}

int
nouveau_fbcon_destroy(struct drm_device *dev, struct nouveau_fbdev *nfbdev)
{
	struct nouveau_framebuffer *nouveau_fb = &nfbdev->nouveau_fb;
	struct fb_info *info;

	if (nfbdev->helper.fbdev) {
		info = nfbdev->helper.fbdev;
		unregister_framebuffer(info);
		framebuffer_release(info);
	}

	if (nouveau_fb->nvbo) {
		nouveau_bo_unmap(nouveau_fb->nvbo);
		drm_gem_object_unreference_unlocked(nouveau_fb->nvbo->gem);
		nouveau_fb->nvbo = NULL;
	}
	drm_fb_helper_free(&nfbdev->helper);
	drm_framebuffer_cleanup(&nouveau_fb->base);
	return 0;
}

void nouveau_fbcon_gpu_lockup(struct fb_info *info)
{
	struct nouveau_fbdev *nfbdev = info->par;
	struct drm_device *dev = nfbdev->dev;

	NV_ERROR(dev, "GPU lockup - switching to software fbcon\n");
	info->flags |= FBINFO_HWACCEL_DISABLED;
}

int nouveau_fbcon_init(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_fbdev *nfbdev;

	nfbdev = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
	if (!nfbdev)
		return -ENOMEM;

	nfbdev->dev = dev;
	dev_priv->nfbdev = nfbdev;

	drm_fb_helper_init_crtc_count(dev, &nfbdev->helper,
				      2, 4);
	nfbdev->helper.fb_probe = nouveau_fbcon_find_or_create_single;
	drm_fb_helper_single_add_all_connectors(&nfbdev->helper);

	drm_fb_helper_initial_config(&nfbdev->helper);
	nouveau_fbcon_probe(nfbdev);
	return 0;
}

void nouveau_fbcon_fini(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;

	if (!dev_priv->nfbdev)
		return;

	nouveau_fbcon_destroy(dev, dev_priv->nfbdev);
	kfree(dev_priv->nfbdev);
	dev_priv->nfbdev = NULL;
}

void nouveau_fbcon_save_disable_accel(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;

	dev_priv->nfbdev->saved_flags = dev_priv->nfbdev->helper.fbdev->flags;
	dev_priv->nfbdev->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
}

void nouveau_fbcon_restore_accel(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	dev_priv->nfbdev->helper.fbdev->flags = dev_priv->nfbdev->saved_flags;
}

void nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	fb_set_suspend(dev_priv->nfbdev->helper.fbdev, state);
}

void nouveau_fbcon_zfill_all(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	nouveau_fbcon_zfill(dev, dev_priv->nfbdev);
}
Commit	Line	Data
6ee73861 BS	1	/*
	2	* Copyright © 2007 David Airlie
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining a
	5	* copy of this software and associated documentation files (the "Software"),
	6	* to deal in the Software without restriction, including without limitation
	7	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	8	* and/or sell copies of the Software, and to permit persons to whom the
	9	* Software is furnished to do so, subject to the following conditions:
	10	*
	11	* The above copyright notice and this permission notice (including the next
	12	* paragraph) shall be included in all copies or substantial portions of the
	13	* Software.
	14	*
	15	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	16	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	17	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	18	* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
	19	* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
	20	* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
	21	* DEALINGS IN THE SOFTWARE.
	22	*
	23	* Authors:
	24	* David Airlie
	25	*/
	26
	27	#include <linux/module.h>
	28	#include <linux/kernel.h>
	29	#include <linux/errno.h>
	30	#include <linux/string.h>
	31	#include <linux/mm.h>
	32	#include <linux/tty.h>
	33	#include <linux/slab.h>
	34	#include <linux/sysrq.h>
	35	#include <linux/delay.h>
	36	#include <linux/fb.h>
	37	#include <linux/init.h>
	38	#include <linux/screen_info.h>
6a9ee8af	39	#include <linux/vga_switcheroo.h>
6ee73861 BS	40
	41	#include "drmP.h"
	42	#include "drm.h"
	43	#include "drm_crtc.h"
	44	#include "drm_crtc_helper.h"
	45	#include "drm_fb_helper.h"
	46	#include "nouveau_drv.h"
	47	#include "nouveau_drm.h"
	48	#include "nouveau_crtc.h"
	49	#include "nouveau_fb.h"
	50	#include "nouveau_fbcon.h"
	51	#include "nouveau_dma.h"
	52
	53	static int
	54	nouveau_fbcon_sync(struct fb_info *info)
	55	{
8be48d92 DA	56	struct nouveau_fbdev *nfbdev = info->par;
8be48d92 DA	57	struct drm_device *dev = nfbdev->dev;
6ee73861 BS	58	struct drm_nouveau_private *dev_priv = dev->dev_private;
	59	struct nouveau_channel *chan = dev_priv->channel;
	60	int ret, i;
	61
0735f62e	62	if (!chan \|\| !chan->accel_done \|\|
6ee73861 BS	63	info->state != FBINFO_STATE_RUNNING \|\|
	64	info->flags & FBINFO_HWACCEL_DISABLED)
	65	return 0;
	66
	67	if (RING_SPACE(chan, 4)) {
846975a9	68	nouveau_fbcon_gpu_lockup(info);
6ee73861 BS	69	return 0;
	70	}
	71
	72	BEGIN_RING(chan, 0, 0x0104, 1);
	73	OUT_RING(chan, 0);
	74	BEGIN_RING(chan, 0, 0x0100, 1);
	75	OUT_RING(chan, 0);
	76	nouveau_bo_wr32(chan->notifier_bo, chan->m2mf_ntfy + 3, 0xffffffff);
	77	FIRE_RING(chan);
	78
	79	ret = -EBUSY;
	80	for (i = 0; i < 100000; i++) {
	81	if (!nouveau_bo_rd32(chan->notifier_bo, chan->m2mf_ntfy + 3)) {
	82	ret = 0;
	83	break;
	84	}
	85	DRM_UDELAY(1);
	86	}
	87
	88	if (ret) {
846975a9	89	nouveau_fbcon_gpu_lockup(info);
6ee73861 BS	90	return 0;
	91	}
	92
	93	chan->accel_done = false;
	94	return 0;
	95	}
	96
	97	static struct fb_ops nouveau_fbcon_ops = {
	98	.owner = THIS_MODULE,
	99	.fb_check_var = drm_fb_helper_check_var,
	100	.fb_set_par = drm_fb_helper_set_par,
	101	.fb_setcolreg = drm_fb_helper_setcolreg,
	102	.fb_fillrect = cfb_fillrect,
	103	.fb_copyarea = cfb_copyarea,
	104	.fb_imageblit = cfb_imageblit,
	105	.fb_sync = nouveau_fbcon_sync,
	106	.fb_pan_display = drm_fb_helper_pan_display,
	107	.fb_blank = drm_fb_helper_blank,
	108	.fb_setcmap = drm_fb_helper_setcmap,
	109	};
	110
126b5440 MK	111	static struct fb_ops nv04_fbcon_ops = {
	112	.owner = THIS_MODULE,
	113	.fb_check_var = drm_fb_helper_check_var,
	114	.fb_set_par = drm_fb_helper_set_par,
	115	.fb_setcolreg = drm_fb_helper_setcolreg,
	116	.fb_fillrect = nv04_fbcon_fillrect,
	117	.fb_copyarea = nv04_fbcon_copyarea,
	118	.fb_imageblit = nv04_fbcon_imageblit,
	119	.fb_sync = nouveau_fbcon_sync,
	120	.fb_pan_display = drm_fb_helper_pan_display,
	121	.fb_blank = drm_fb_helper_blank,
	122	.fb_setcmap = drm_fb_helper_setcmap,
	123	};
	124
	125	static struct fb_ops nv50_fbcon_ops = {
	126	.owner = THIS_MODULE,
	127	.fb_check_var = drm_fb_helper_check_var,
	128	.fb_set_par = drm_fb_helper_set_par,
	129	.fb_setcolreg = drm_fb_helper_setcolreg,
	130	.fb_fillrect = nv50_fbcon_fillrect,
	131	.fb_copyarea = nv50_fbcon_copyarea,
	132	.fb_imageblit = nv50_fbcon_imageblit,
	133	.fb_sync = nouveau_fbcon_sync,
	134	.fb_pan_display = drm_fb_helper_pan_display,
	135	.fb_blank = drm_fb_helper_blank,
	136	.fb_setcmap = drm_fb_helper_setcmap,
	137	};
	138
6ee73861 BS	139	static void nouveau_fbcon_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
	140	u16 blue, int regno)
	141	{
	142	struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
	143
	144	nv_crtc->lut.r[regno] = red;
	145	nv_crtc->lut.g[regno] = green;
	146	nv_crtc->lut.b[regno] = blue;
	147	}
	148
	149	static void nouveau_fbcon_gamma_get(struct drm_crtc crtc, u16 red, u16 *green,
	150	u16 *blue, int regno)
	151	{
	152	struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
	153
	154	*red = nv_crtc->lut.r[regno];
	155	*green = nv_crtc->lut.g[regno];
	156	*blue = nv_crtc->lut.b[regno];
	157	}
	158
	159	static struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
	160	.gamma_set = nouveau_fbcon_gamma_set,
	161	.gamma_get = nouveau_fbcon_gamma_get
	162	};
	163
	164	#if defined(__i386__) \|\| defined(__x86_64__)
	165	static bool
	166	nouveau_fbcon_has_vesafb_or_efifb(struct drm_device *dev)
	167	{
	168	struct pci_dev *pdev = dev->pdev;
	169	int ramin;
	170
	171	if (screen_info.orig_video_isVGA != VIDEO_TYPE_VLFB &&
	172	screen_info.orig_video_isVGA != VIDEO_TYPE_EFI)
	173	return false;
	174
	175	if (screen_info.lfb_base < pci_resource_start(pdev, 1))
	176	goto not_fb;
	177
	178	if (screen_info.lfb_base + screen_info.lfb_size >=
	179	pci_resource_start(pdev, 1) + pci_resource_len(pdev, 1))
	180	goto not_fb;
	181
	182	return true;
	183	not_fb:
	184	ramin = 2;
	185	if (pci_resource_len(pdev, ramin) == 0) {
	186	ramin = 3;
	187	if (pci_resource_len(pdev, ramin) == 0)
	188	return false;
	189	}
	190
	191	if (screen_info.lfb_base < pci_resource_start(pdev, ramin))
	192	return false;
	193
	194	if (screen_info.lfb_base + screen_info.lfb_size >=
	195	pci_resource_start(pdev, ramin) + pci_resource_len(pdev, ramin))
	196	return false;
	197
	198	return true;
	199	}
	200	#endif
	201
38651674	202	static void
8be48d92	203	nouveau_fbcon_zfill(struct drm_device dev, struct nouveau_fbdev nfbdev)
6ee73861	204	{
8be48d92	205	struct fb_info *info = nfbdev->helper.fbdev;
6ee73861 BS	206	struct fb_fillrect rect;
	207
	208	/* Clear the entire fbcon. The drm will program every connector
	209	* with it's preferred mode. If the sizes differ, one display will
	210	* quite likely have garbage around the console.
	211	*/
	212	rect.dx = rect.dy = 0;
	213	rect.width = info->var.xres_virtual;
	214	rect.height = info->var.yres_virtual;
	215	rect.color = 0;
	216	rect.rop = ROP_COPY;
	217	info->fbops->fb_fillrect(info, &rect);
	218	}
	219
	220	static int
8be48d92 DA	221	nouveau_fbcon_create(struct nouveau_fbdev *nfbdev,
8be48d92 DA	222	struct drm_fb_helper_surface_size *sizes)
6ee73861	223	{
8be48d92	224	struct drm_device *dev = nfbdev->dev;
6ee73861 BS	225	struct drm_nouveau_private *dev_priv = dev->dev_private;
6ee73861 BS	226	struct fb_info *info;
6ee73861 BS	227	struct drm_framebuffer *fb;
	228	struct nouveau_framebuffer *nouveau_fb;
	229	struct nouveau_bo *nvbo;
	230	struct drm_mode_fb_cmd mode_cmd;
	231	struct device *device = &dev->pdev->dev;
	232	int size, ret;
	233
38651674 DA	234	mode_cmd.width = sizes->surface_width;
38651674 DA	235	mode_cmd.height = sizes->surface_height;
6ee73861	236
38651674	237	mode_cmd.bpp = sizes->surface_bpp;
6ee73861	238	mode_cmd.pitch = mode_cmd.width * (mode_cmd.bpp >> 3);
1c7059e4	239	mode_cmd.pitch = roundup(mode_cmd.pitch, 256);
38651674	240	mode_cmd.depth = sizes->surface_depth;
6ee73861 BS	241
6ee73861 BS	242	size = mode_cmd.pitch * mode_cmd.height;
1c7059e4	243	size = roundup(size, PAGE_SIZE);
6ee73861 BS	244
	245	ret = nouveau_gem_new(dev, dev_priv->channel, size, 0, TTM_PL_FLAG_VRAM,
	246	0, 0x0000, false, true, &nvbo);
	247	if (ret) {
	248	NV_ERROR(dev, "failed to allocate framebuffer\n");
	249	goto out;
	250	}
	251
	252	ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM);
	253	if (ret) {
	254	NV_ERROR(dev, "failed to pin fb: %d\n", ret);
	255	nouveau_bo_ref(NULL, &nvbo);
	256	goto out;
	257	}
	258
	259	ret = nouveau_bo_map(nvbo);
	260	if (ret) {
	261	NV_ERROR(dev, "failed to map fb: %d\n", ret);
	262	nouveau_bo_unpin(nvbo);
	263	nouveau_bo_ref(NULL, &nvbo);
	264	goto out;
	265	}
	266
	267	mutex_lock(&dev->struct_mutex);
	268
8be48d92	269	info = framebuffer_alloc(0, device);
6ee73861 BS	270	if (!info) {
	271	ret = -ENOMEM;
	272	goto out_unref;
	273	}
	274
8be48d92	275	info->par = nfbdev;
38651674	276
8be48d92	277	nouveau_framebuffer_init(dev, &nfbdev->nouveau_fb, &mode_cmd, nvbo);
38651674	278
8be48d92 DA	279	nouveau_fb = &nfbdev->nouveau_fb;
8be48d92 DA	280	fb = &nouveau_fb->base;
38651674	281
8be48d92 DA	282	/* setup helper */
	283	nfbdev->helper.fb = fb;
	284	nfbdev->helper.fbdev = info;
	285	nfbdev->helper.funcs = &nouveau_fbcon_helper_funcs;
6ee73861 BS	286
6ee73861 BS	287	strcpy(info->fix.id, "nouveaufb");
a32ed69d MK	288	if (nouveau_nofbaccel)
	289	info->flags = FBINFO_DEFAULT \| FBINFO_HWACCEL_DISABLED;
	290	else
	291	info->flags = FBINFO_DEFAULT \| FBINFO_HWACCEL_COPYAREA \|
	292	FBINFO_HWACCEL_FILLRECT \|
	293	FBINFO_HWACCEL_IMAGEBLIT;
6ee73861 BS	294	info->fbops = &nouveau_fbcon_ops;
	295	info->fix.smem_start = dev->mode_config.fb_base + nvbo->bo.offset -
	296	dev_priv->vm_vram_base;
	297	info->fix.smem_len = size;
	298
	299	info->screen_base = nvbo_kmap_obj_iovirtual(nouveau_fb->nvbo);
	300	info->screen_size = size;
	301
	302	drm_fb_helper_fill_fix(info, fb->pitch, fb->depth);
8be48d92	303	drm_fb_helper_fill_var(info, &nfbdev->helper, sizes->fb_width, sizes->fb_height);
6ee73861 BS	304
	305	/* FIXME: we really shouldn't expose mmio space at all */
	306	info->fix.mmio_start = pci_resource_start(dev->pdev, 1);
	307	info->fix.mmio_len = pci_resource_len(dev->pdev, 1);
	308
	309	/* Set aperture base/size for vesafb takeover */
	310	#if defined(__i386__) \|\| defined(__x86_64__)
	311	if (nouveau_fbcon_has_vesafb_or_efifb(dev)) {
	312	/* Some NVIDIA VBIOS' are stupid and decide to put the
	313	* framebuffer in the middle of the PRAMIN BAR for
	314	* whatever reason. We need to know the exact lfb_base
	315	* to get vesafb kicked off, and the only reliable way
	316	* we have left is to find out lfb_base the same way
	317	* vesafb did.
	318	*/
	319	info->aperture_base = screen_info.lfb_base;
	320	info->aperture_size = screen_info.lfb_size;
	321	if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB)
	322	info->aperture_size *= 65536;
	323	} else
	324	#endif
	325	{
	326	info->aperture_base = info->fix.mmio_start;
	327	info->aperture_size = info->fix.mmio_len;
	328	}
	329
	330	info->pixmap.size = 64*1024;
	331	info->pixmap.buf_align = 8;
	332	info->pixmap.access_align = 32;
	333	info->pixmap.flags = FB_PIXMAP_SYSTEM;
	334	info->pixmap.scan_align = 1;
	335
a32ed69d	336	if (dev_priv->channel && !nouveau_nofbaccel) {
0735f62e BS	337	switch (dev_priv->card_type) {
	338	case NV_50:
	339	nv50_fbcon_accel_init(info);
126b5440	340	info->fbops = &nv50_fbcon_ops;
0735f62e BS	341	break;
	342	default:
	343	nv04_fbcon_accel_init(info);
126b5440	344	info->fbops = &nv04_fbcon_ops;
0735f62e BS	345	break;
	346	};
	347	}
6ee73861	348
8be48d92	349	nouveau_fbcon_zfill(dev, nfbdev);
6ee73861 BS	350
	351	/* To allow resizeing without swapping buffers */
	352	NV_INFO(dev, "allocated %dx%d fb: 0x%lx, bo %p\n",
	353	nouveau_fb->base.width,
	354	nouveau_fb->base.height,
	355	nvbo->bo.offset, nvbo);
	356
	357	mutex_unlock(&dev->struct_mutex);
6a9ee8af	358	vga_switcheroo_client_fb_set(dev->pdev, info);
6ee73861 BS	359	return 0;
	360
	361	out_unref:
	362	mutex_unlock(&dev->struct_mutex);
	363	out:
	364	return ret;
	365	}
	366
38651674	367	static int
8be48d92 DA	368	nouveau_fbcon_find_or_create_single(struct drm_fb_helper *helper,
8be48d92 DA	369	struct drm_fb_helper_surface_size *sizes)
38651674	370	{
8be48d92	371	struct nouveau_fbdev nfbdev = (struct nouveau_fbdev )helper;
38651674 DA	372	int new_fb = 0;
	373	int ret;
	374
8be48d92 DA	375	if (!helper->fb) {
8be48d92 DA	376	ret = nouveau_fbcon_create(nfbdev, sizes);
38651674 DA	377	if (ret)
38651674 DA	378	return ret;
38651674	379	new_fb = 1;
38651674	380	}
38651674 DA	381	return new_fb;
	382	}
	383
	384	static int
8be48d92	385	nouveau_fbcon_probe(struct nouveau_fbdev *nfbdev)
6ee73861	386	{
8be48d92	387	NV_DEBUG_KMS(nfbdev->dev, "\n");
6ee73861	388
8be48d92	389	return drm_fb_helper_single_fb_probe(&nfbdev->helper, 32);
6ee73861 BS	390	}
	391
	392	int
8be48d92	393	nouveau_fbcon_destroy(struct drm_device dev, struct nouveau_fbdev nfbdev)
6ee73861	394	{
8be48d92	395	struct nouveau_framebuffer *nouveau_fb = &nfbdev->nouveau_fb;
6ee73861 BS	396	struct fb_info *info;
6ee73861 BS	397
8be48d92 DA	398	if (nfbdev->helper.fbdev) {
	399	info = nfbdev->helper.fbdev;
	400	unregister_framebuffer(info);
	401	framebuffer_release(info);
	402	}
6ee73861	403
8be48d92 DA	404	if (nouveau_fb->nvbo) {
	405	nouveau_bo_unmap(nouveau_fb->nvbo);
	406	drm_gem_object_unreference_unlocked(nouveau_fb->nvbo->gem);
	407	nouveau_fb->nvbo = NULL;
	408	}
	409	drm_fb_helper_free(&nfbdev->helper);
38651674	410	drm_framebuffer_cleanup(&nouveau_fb->base);
6ee73861 BS	411	return 0;
6ee73861 BS	412	}
846975a9 MS	413
	414	void nouveau_fbcon_gpu_lockup(struct fb_info *info)
	415	{
8be48d92 DA	416	struct nouveau_fbdev *nfbdev = info->par;
8be48d92 DA	417	struct drm_device *dev = nfbdev->dev;
846975a9 MS	418
	419	NV_ERROR(dev, "GPU lockup - switching to software fbcon\n");
	420	info->flags \|= FBINFO_HWACCEL_DISABLED;
	421	}
38651674 DA	422
	423	int nouveau_fbcon_init(struct drm_device *dev)
	424	{
8be48d92 DA	425	struct drm_nouveau_private *dev_priv = dev->dev_private;
	426	struct nouveau_fbdev *nfbdev;
	427
	428	nfbdev = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
	429	if (!nfbdev)
	430	return -ENOMEM;
	431
	432	nfbdev->dev = dev;
	433	dev_priv->nfbdev = nfbdev;
	434
	435	drm_fb_helper_init_crtc_count(dev, &nfbdev->helper,
	436	2, 4);
	437	nfbdev->helper.fb_probe = nouveau_fbcon_find_or_create_single;
0b4c0f3f DA	438	drm_fb_helper_single_add_all_connectors(&nfbdev->helper);
0b4c0f3f DA	439
8be48d92 DA	440	drm_fb_helper_initial_config(&nfbdev->helper);
8be48d92 DA	441	nouveau_fbcon_probe(nfbdev);
38651674 DA	442	return 0;
	443	}
	444
	445	void nouveau_fbcon_fini(struct drm_device *dev)
	446	{
	447	struct drm_nouveau_private *dev_priv = dev->dev_private;
8be48d92 DA	448
	449	if (!dev_priv->nfbdev)
	450	return;
	451
38651674	452	nouveau_fbcon_destroy(dev, dev_priv->nfbdev);
8be48d92	453	kfree(dev_priv->nfbdev);
38651674 DA	454	dev_priv->nfbdev = NULL;
	455	}
	456
	457	void nouveau_fbcon_save_disable_accel(struct drm_device *dev)
	458	{
	459	struct drm_nouveau_private *dev_priv = dev->dev_private;
	460
	461	dev_priv->nfbdev->saved_flags = dev_priv->nfbdev->helper.fbdev->flags;
	462	dev_priv->nfbdev->helper.fbdev->flags \|= FBINFO_HWACCEL_DISABLED;
	463	}
	464
	465	void nouveau_fbcon_restore_accel(struct drm_device *dev)
	466	{
	467	struct drm_nouveau_private *dev_priv = dev->dev_private;
	468	dev_priv->nfbdev->helper.fbdev->flags = dev_priv->nfbdev->saved_flags;
	469	}
	470
	471	void nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
	472	{
	473	struct drm_nouveau_private *dev_priv = dev->dev_private;
	474	fb_set_suspend(dev_priv->nfbdev->helper.fbdev, state);
	475	}
	476
	477	void nouveau_fbcon_zfill_all(struct drm_device *dev)
	478	{
	479	struct drm_nouveau_private *dev_priv = dev->dev_private;
	480	nouveau_fbcon_zfill(dev, dev_priv->nfbdev);
	481	}