[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/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 <linux/console.h>

#include <drm/drmP.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_helper.h>

#include "nouveau_drm.h"
#include "nouveau_gem.h"
#include "nouveau_bo.h"
#include "nouveau_fbcon.h"
#include "nouveau_chan.h"

#include "nouveau_crtc.h"

#include <core/client.h>
#include <core/device.h>

#include <subdev/fb.h>

MODULE_PARM_DESC(nofbaccel, "Disable fbcon acceleration");
static int nouveau_nofbaccel = 0;
module_param_named(nofbaccel, nouveau_nofbaccel, int, 0400);

static void
nouveau_fbcon_fillrect(struct fb_info *info, const struct fb_fillrect *rect)
{
	struct nouveau_fbdev *fbcon = info->par;
	struct nouveau_drm *drm = nouveau_drm(fbcon->dev);
	struct nouveau_device *device = nv_device(drm->device);
	int ret;

	if (info->state != FBINFO_STATE_RUNNING)
		return;

	ret = -ENODEV;
	if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
	    mutex_trylock(&drm->client.mutex)) {
		if (device->card_type < NV_50)
			ret = nv04_fbcon_fillrect(info, rect);
		else
		if (device->card_type < NV_C0)
			ret = nv50_fbcon_fillrect(info, rect);
		else
			ret = nvc0_fbcon_fillrect(info, rect);
		mutex_unlock(&drm->client.mutex);
	}

	if (ret == 0)
		return;

	if (ret != -ENODEV)
		nouveau_fbcon_gpu_lockup(info);
	cfb_fillrect(info, rect);
}

static void
nouveau_fbcon_copyarea(struct fb_info *info, const struct fb_copyarea *image)
{
	struct nouveau_fbdev *fbcon = info->par;
	struct nouveau_drm *drm = nouveau_drm(fbcon->dev);
	struct nouveau_device *device = nv_device(drm->device);
	int ret;

	if (info->state != FBINFO_STATE_RUNNING)
		return;

	ret = -ENODEV;
	if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
	    mutex_trylock(&drm->client.mutex)) {
		if (device->card_type < NV_50)
			ret = nv04_fbcon_copyarea(info, image);
		else
		if (device->card_type < NV_C0)
			ret = nv50_fbcon_copyarea(info, image);
		else
			ret = nvc0_fbcon_copyarea(info, image);
		mutex_unlock(&drm->client.mutex);
	}

	if (ret == 0)
		return;

	if (ret != -ENODEV)
		nouveau_fbcon_gpu_lockup(info);
	cfb_copyarea(info, image);
}

static void
nouveau_fbcon_imageblit(struct fb_info *info, const struct fb_image *image)
{
	struct nouveau_fbdev *fbcon = info->par;
	struct nouveau_drm *drm = nouveau_drm(fbcon->dev);
	struct nouveau_device *device = nv_device(drm->device);
	int ret;

	if (info->state != FBINFO_STATE_RUNNING)
		return;

	ret = -ENODEV;
	if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
	    mutex_trylock(&drm->client.mutex)) {
		if (device->card_type < NV_50)
			ret = nv04_fbcon_imageblit(info, image);
		else
		if (device->card_type < NV_C0)
			ret = nv50_fbcon_imageblit(info, image);
		else
			ret = nvc0_fbcon_imageblit(info, image);
		mutex_unlock(&drm->client.mutex);
	}

	if (ret == 0)
		return;

	if (ret != -ENODEV)
		nouveau_fbcon_gpu_lockup(info);
	cfb_imageblit(info, image);
}

static int
nouveau_fbcon_sync(struct fb_info *info)
{
	struct nouveau_fbdev *fbcon = info->par;
	struct nouveau_drm *drm = nouveau_drm(fbcon->dev);
	struct nouveau_channel *chan = drm->channel;
	int ret;

	if (!chan || !chan->accel_done || in_interrupt() ||
	    info->state != FBINFO_STATE_RUNNING ||
	    info->flags & FBINFO_HWACCEL_DISABLED)
		return 0;

	if (!mutex_trylock(&drm->client.mutex))
		return 0;

	ret = nouveau_channel_idle(chan);
	mutex_unlock(&drm->client.mutex);
	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_fillrect = nouveau_fbcon_fillrect,
	.fb_copyarea = nouveau_fbcon_copyarea,
	.fb_imageblit = nouveau_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,
	.fb_debug_enter = drm_fb_helper_debug_enter,
	.fb_debug_leave = drm_fb_helper_debug_leave,
};

static struct fb_ops nouveau_fbcon_sw_ops = {
	.owner = THIS_MODULE,
	.fb_check_var = drm_fb_helper_check_var,
	.fb_set_par = drm_fb_helper_set_par,
	.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,
	.fb_debug_enter = drm_fb_helper_debug_enter,
	.fb_debug_leave = drm_fb_helper_debug_leave,
};

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 void
nouveau_fbcon_zfill(struct drm_device *dev, struct nouveau_fbdev *fbcon)
{
	struct fb_info *info = fbcon->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 drm_fb_helper *helper,
		     struct drm_fb_helper_surface_size *sizes)
{
	struct nouveau_fbdev *fbcon = (struct nouveau_fbdev *)helper;
	struct drm_device *dev = fbcon->dev;
	struct nouveau_drm *drm = nouveau_drm(dev);
	struct nouveau_device *device = nv_device(drm->device);
	struct fb_info *info;
	struct drm_framebuffer *fb;
	struct nouveau_framebuffer *nouveau_fb;
	struct nouveau_channel *chan;
	struct nouveau_bo *nvbo;
	struct drm_mode_fb_cmd2 mode_cmd;
	struct pci_dev *pdev = dev->pdev;
	int size, ret;

	mode_cmd.width = sizes->surface_width;
	mode_cmd.height = sizes->surface_height;

	mode_cmd.pitches[0] = mode_cmd.width * (sizes->surface_bpp >> 3);
	mode_cmd.pitches[0] = roundup(mode_cmd.pitches[0], 256);

	mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
							  sizes->surface_depth);

	size = mode_cmd.pitches[0] * mode_cmd.height;
	size = roundup(size, PAGE_SIZE);

	ret = nouveau_gem_new(dev, size, 0, NOUVEAU_GEM_DOMAIN_VRAM,
			      0, 0x0000, &nvbo);
	if (ret) {
		NV_ERROR(drm, "failed to allocate framebuffer\n");
		goto out;
	}

	ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM);
	if (ret) {
		NV_ERROR(drm, "failed to pin fb: %d\n", ret);
		nouveau_bo_ref(NULL, &nvbo);
		goto out;
	}

	ret = nouveau_bo_map(nvbo);
	if (ret) {
		NV_ERROR(drm, "failed to map fb: %d\n", ret);
		nouveau_bo_unpin(nvbo);
		nouveau_bo_ref(NULL, &nvbo);
		goto out;
	}

	chan = nouveau_nofbaccel ? NULL : drm->channel;
	if (chan && device->card_type >= NV_50) {
		ret = nouveau_bo_vma_add(nvbo, nv_client(chan->cli)->vm,
					&fbcon->nouveau_fb.vma);
		if (ret) {
			NV_ERROR(drm, "failed to map fb into chan: %d\n", ret);
			chan = NULL;
		}
	}

	mutex_lock(&dev->struct_mutex);

	info = framebuffer_alloc(0, &pdev->dev);
	if (!info) {
		ret = -ENOMEM;
		goto out_unref;
	}

	ret = fb_alloc_cmap(&info->cmap, 256, 0);
	if (ret) {
		ret = -ENOMEM;
		goto out_unref;
	}

	info->par = fbcon;

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

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

	/* setup helper */
	fbcon->helper.fb = fb;
	fbcon->helper.fbdev = 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->flags |= FBINFO_CAN_FORCE_OUTPUT;
	info->fbops = &nouveau_fbcon_sw_ops;
	info->fix.smem_start = nvbo->bo.mem.bus.base +
			       nvbo->bo.mem.bus.offset;
	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->pitches[0], fb->depth);
	drm_fb_helper_fill_var(info, &fbcon->helper, sizes->fb_width, sizes->fb_height);

	/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */

	mutex_unlock(&dev->struct_mutex);

	if (chan) {
		ret = -ENODEV;
		if (device->card_type < NV_50)
			ret = nv04_fbcon_accel_init(info);
		else
		if (device->card_type < NV_C0)
			ret = nv50_fbcon_accel_init(info);
		else
			ret = nvc0_fbcon_accel_init(info);

		if (ret == 0)
			info->fbops = &nouveau_fbcon_ops;
	}

	nouveau_fbcon_zfill(dev, fbcon);

	/* To allow resizeing without swapping buffers */
	NV_INFO(drm, "allocated %dx%d fb: 0x%lx, bo %p\n",
		nouveau_fb->base.width, nouveau_fb->base.height,
		nvbo->bo.offset, nvbo);

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

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

void
nouveau_fbcon_output_poll_changed(struct drm_device *dev)
{
	struct nouveau_drm *drm = nouveau_drm(dev);
	drm_fb_helper_hotplug_event(&drm->fbcon->helper);
}

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

	if (fbcon->helper.fbdev) {
		info = fbcon->helper.fbdev;
		unregister_framebuffer(info);
		if (info->cmap.len)
			fb_dealloc_cmap(&info->cmap);
		framebuffer_release(info);
	}

	if (nouveau_fb->nvbo) {
		nouveau_bo_unmap(nouveau_fb->nvbo);
		nouveau_bo_vma_del(nouveau_fb->nvbo, &nouveau_fb->vma);
		drm_gem_object_unreference_unlocked(nouveau_fb->nvbo->gem);
		nouveau_fb->nvbo = NULL;
	}
	drm_fb_helper_fini(&fbcon->helper);
	drm_framebuffer_unregister_private(&nouveau_fb->base);
	drm_framebuffer_cleanup(&nouveau_fb->base);
	return 0;
}

void nouveau_fbcon_gpu_lockup(struct fb_info *info)
{
	struct nouveau_fbdev *fbcon = info->par;
	struct nouveau_drm *drm = nouveau_drm(fbcon->dev);

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

static struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
	.gamma_set = nouveau_fbcon_gamma_set,
	.gamma_get = nouveau_fbcon_gamma_get,
	.fb_probe = nouveau_fbcon_create,
};


int
nouveau_fbcon_init(struct drm_device *dev)
{
	struct nouveau_drm *drm = nouveau_drm(dev);
	struct nouveau_fb *pfb = nouveau_fb(drm->device);
	struct nouveau_fbdev *fbcon;
	int preferred_bpp;
	int ret;

	if (!dev->mode_config.num_crtc)
		return 0;

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

	fbcon->dev = dev;
	drm->fbcon = fbcon;
	fbcon->helper.funcs = &nouveau_fbcon_helper_funcs;

	ret = drm_fb_helper_init(dev, &fbcon->helper,
				 dev->mode_config.num_crtc, 4);
	if (ret) {
		kfree(fbcon);
		return ret;
	}

	drm_fb_helper_single_add_all_connectors(&fbcon->helper);

	if (pfb->ram.size <= 32 * 1024 * 1024)
		preferred_bpp = 8;
	else
	if (pfb->ram.size <= 64 * 1024 * 1024)
		preferred_bpp = 16;
	else
		preferred_bpp = 32;

	/* disable all the possible outputs/crtcs before entering KMS mode */
	drm_helper_disable_unused_functions(dev);

	drm_fb_helper_initial_config(&fbcon->helper, preferred_bpp);
	return 0;
}

void
nouveau_fbcon_fini(struct drm_device *dev)
{
	struct nouveau_drm *drm = nouveau_drm(dev);

	if (!drm->fbcon)
		return;

	nouveau_fbcon_destroy(dev, drm->fbcon);
	kfree(drm->fbcon);
	drm->fbcon = NULL;
}

void nouveau_fbcon_save_disable_accel(struct drm_device *dev)
{
	struct nouveau_drm *drm = nouveau_drm(dev);

	drm->fbcon->saved_flags = drm->fbcon->helper.fbdev->flags;
	drm->fbcon->helper.fbdev->flags |= FBINFO_HWACCEL_DISABLED;
}

void nouveau_fbcon_restore_accel(struct drm_device *dev)
{
	struct nouveau_drm *drm = nouveau_drm(dev);
	drm->fbcon->helper.fbdev->flags = drm->fbcon->saved_flags;
}

void nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
{
	struct nouveau_drm *drm = nouveau_drm(dev);
	console_lock();
	if (state == 0)
		nouveau_fbcon_save_disable_accel(dev);
	fb_set_suspend(drm->fbcon->helper.fbdev, state);
	if (state == 1)
		nouveau_fbcon_restore_accel(dev);
	console_unlock();
}

void nouveau_fbcon_zfill_all(struct drm_device *dev)
{
	struct nouveau_drm *drm = nouveau_drm(dev);
	nouveau_fbcon_zfill(dev, drm->fbcon);
}
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>
6ee73861 BS	33	#include <linux/sysrq.h>
	34	#include <linux/delay.h>
	35	#include <linux/fb.h>
	36	#include <linux/init.h>
	37	#include <linux/screen_info.h>
6a9ee8af	38	#include <linux/vga_switcheroo.h>
cf41d53b	39	#include <linux/console.h>
6ee73861	40
760285e7 DH	41	#include <drm/drmP.h>
	42	#include <drm/drm_crtc.h>
	43	#include <drm/drm_crtc_helper.h>
	44	#include <drm/drm_fb_helper.h>
ebb945a9 BS	45
	46	#include "nouveau_drm.h"
	47	#include "nouveau_gem.h"
	48	#include "nouveau_bo.h"
6ee73861	49	#include "nouveau_fbcon.h"
ebb945a9 BS	50	#include "nouveau_chan.h"
	51
	52	#include "nouveau_crtc.h"
	53
	54	#include <core/client.h>
	55	#include <core/device.h>
	56
	57	#include <subdev/fb.h>
	58
	59	MODULE_PARM_DESC(nofbaccel, "Disable fbcon acceleration");
	60	static int nouveau_nofbaccel = 0;
	61	module_param_named(nofbaccel, nouveau_nofbaccel, int, 0400);
6ee73861	62
ceed5f30 BS	63	static void
	64	nouveau_fbcon_fillrect(struct fb_info info, const struct fb_fillrect rect)
	65	{
ebb945a9	66	struct nouveau_fbdev *fbcon = info->par;
77145f1c	67	struct nouveau_drm *drm = nouveau_drm(fbcon->dev);
ebb945a9	68	struct nouveau_device *device = nv_device(drm->device);
ceed5f30 BS	69	int ret;
	70
	71	if (info->state != FBINFO_STATE_RUNNING)
	72	return;
	73
	74	ret = -ENODEV;
9acc8100	75	if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
ebb945a9 BS	76	mutex_trylock(&drm->client.mutex)) {
ebb945a9 BS	77	if (device->card_type < NV_50)
ceed5f30 BS	78	ret = nv04_fbcon_fillrect(info, rect);
ceed5f30 BS	79	else
ebb945a9	80	if (device->card_type < NV_C0)
ceed5f30	81	ret = nv50_fbcon_fillrect(info, rect);
ddbaf79a BS	82	else
ddbaf79a BS	83	ret = nvc0_fbcon_fillrect(info, rect);
ebb945a9	84	mutex_unlock(&drm->client.mutex);
ceed5f30 BS	85	}
	86
	87	if (ret == 0)
	88	return;
	89
	90	if (ret != -ENODEV)
	91	nouveau_fbcon_gpu_lockup(info);
	92	cfb_fillrect(info, rect);
	93	}
	94
	95	static void
	96	nouveau_fbcon_copyarea(struct fb_info info, const struct fb_copyarea image)
	97	{
ebb945a9	98	struct nouveau_fbdev *fbcon = info->par;
77145f1c	99	struct nouveau_drm *drm = nouveau_drm(fbcon->dev);
ebb945a9	100	struct nouveau_device *device = nv_device(drm->device);
ceed5f30 BS	101	int ret;
	102
	103	if (info->state != FBINFO_STATE_RUNNING)
	104	return;
	105
	106	ret = -ENODEV;
9acc8100	107	if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
ebb945a9 BS	108	mutex_trylock(&drm->client.mutex)) {
ebb945a9 BS	109	if (device->card_type < NV_50)
ceed5f30 BS	110	ret = nv04_fbcon_copyarea(info, image);
ceed5f30 BS	111	else
ebb945a9	112	if (device->card_type < NV_C0)
ceed5f30	113	ret = nv50_fbcon_copyarea(info, image);
ddbaf79a BS	114	else
ddbaf79a BS	115	ret = nvc0_fbcon_copyarea(info, image);
ebb945a9	116	mutex_unlock(&drm->client.mutex);
ceed5f30 BS	117	}
	118
	119	if (ret == 0)
	120	return;
	121
	122	if (ret != -ENODEV)
	123	nouveau_fbcon_gpu_lockup(info);
	124	cfb_copyarea(info, image);
	125	}
	126
	127	static void
	128	nouveau_fbcon_imageblit(struct fb_info info, const struct fb_image image)
	129	{
ebb945a9	130	struct nouveau_fbdev *fbcon = info->par;
77145f1c	131	struct nouveau_drm *drm = nouveau_drm(fbcon->dev);
ebb945a9	132	struct nouveau_device *device = nv_device(drm->device);
ceed5f30 BS	133	int ret;
	134
	135	if (info->state != FBINFO_STATE_RUNNING)
	136	return;
	137
	138	ret = -ENODEV;
9acc8100	139	if (!in_interrupt() && !(info->flags & FBINFO_HWACCEL_DISABLED) &&
ebb945a9 BS	140	mutex_trylock(&drm->client.mutex)) {
ebb945a9 BS	141	if (device->card_type < NV_50)
ceed5f30 BS	142	ret = nv04_fbcon_imageblit(info, image);
ceed5f30 BS	143	else
ebb945a9	144	if (device->card_type < NV_C0)
ceed5f30	145	ret = nv50_fbcon_imageblit(info, image);
ddbaf79a BS	146	else
ddbaf79a BS	147	ret = nvc0_fbcon_imageblit(info, image);
ebb945a9	148	mutex_unlock(&drm->client.mutex);
ceed5f30 BS	149	}
	150
	151	if (ret == 0)
	152	return;
	153
	154	if (ret != -ENODEV)
	155	nouveau_fbcon_gpu_lockup(info);
	156	cfb_imageblit(info, image);
	157	}
	158
6ee73861 BS	159	static int
	160	nouveau_fbcon_sync(struct fb_info *info)
	161	{
ebb945a9	162	struct nouveau_fbdev *fbcon = info->par;
77145f1c	163	struct nouveau_drm *drm = nouveau_drm(fbcon->dev);
ebb945a9	164	struct nouveau_channel *chan = drm->channel;
78df3a1c	165	int ret;
6ee73861	166
6a6b73f2	167	if (!chan \|\| !chan->accel_done \|\| in_interrupt() \|\|
6ee73861 BS	168	info->state != FBINFO_STATE_RUNNING \|\|
	169	info->flags & FBINFO_HWACCEL_DISABLED)
	170	return 0;
	171
ebb945a9	172	if (!mutex_trylock(&drm->client.mutex))
9acc8100 BS	173	return 0;
9acc8100 BS	174
78df3a1c	175	ret = nouveau_channel_idle(chan);
ebb945a9	176	mutex_unlock(&drm->client.mutex);
6ee73861	177	if (ret) {
846975a9	178	nouveau_fbcon_gpu_lockup(info);
6ee73861 BS	179	return 0;
	180	}
	181
	182	chan->accel_done = false;
	183	return 0;
	184	}
	185
	186	static struct fb_ops nouveau_fbcon_ops = {
	187	.owner = THIS_MODULE,
	188	.fb_check_var = drm_fb_helper_check_var,
	189	.fb_set_par = drm_fb_helper_set_par,
ceed5f30 BS	190	.fb_fillrect = nouveau_fbcon_fillrect,
	191	.fb_copyarea = nouveau_fbcon_copyarea,
	192	.fb_imageblit = nouveau_fbcon_imageblit,
6ee73861 BS	193	.fb_sync = nouveau_fbcon_sync,
	194	.fb_pan_display = drm_fb_helper_pan_display,
	195	.fb_blank = drm_fb_helper_blank,
	196	.fb_setcmap = drm_fb_helper_setcmap,
be64c2bb CB	197	.fb_debug_enter = drm_fb_helper_debug_enter,
be64c2bb CB	198	.fb_debug_leave = drm_fb_helper_debug_leave,
6ee73861 BS	199	};
6ee73861 BS	200
ceed5f30	201	static struct fb_ops nouveau_fbcon_sw_ops = {
126b5440 MK	202	.owner = THIS_MODULE,
	203	.fb_check_var = drm_fb_helper_check_var,
	204	.fb_set_par = drm_fb_helper_set_par,
ceed5f30 BS	205	.fb_fillrect = cfb_fillrect,
	206	.fb_copyarea = cfb_copyarea,
	207	.fb_imageblit = cfb_imageblit,
126b5440 MK	208	.fb_pan_display = drm_fb_helper_pan_display,
	209	.fb_blank = drm_fb_helper_blank,
	210	.fb_setcmap = drm_fb_helper_setcmap,
be64c2bb CB	211	.fb_debug_enter = drm_fb_helper_debug_enter,
be64c2bb CB	212	.fb_debug_leave = drm_fb_helper_debug_leave,
126b5440 MK	213	};
126b5440 MK	214
6ee73861 BS	215	static void nouveau_fbcon_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
	216	u16 blue, int regno)
	217	{
	218	struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
	219
	220	nv_crtc->lut.r[regno] = red;
	221	nv_crtc->lut.g[regno] = green;
	222	nv_crtc->lut.b[regno] = blue;
	223	}
	224
	225	static void nouveau_fbcon_gamma_get(struct drm_crtc crtc, u16 red, u16 *green,
	226	u16 *blue, int regno)
	227	{
	228	struct nouveau_crtc *nv_crtc = nouveau_crtc(crtc);
	229
	230	*red = nv_crtc->lut.r[regno];
	231	*green = nv_crtc->lut.g[regno];
	232	*blue = nv_crtc->lut.b[regno];
	233	}
	234
38651674	235	static void
ebb945a9	236	nouveau_fbcon_zfill(struct drm_device dev, struct nouveau_fbdev fbcon)
6ee73861	237	{
ebb945a9	238	struct fb_info *info = fbcon->helper.fbdev;
6ee73861 BS	239	struct fb_fillrect rect;
	240
	241	/* Clear the entire fbcon. The drm will program every connector
	242	* with it's preferred mode. If the sizes differ, one display will
	243	* quite likely have garbage around the console.
	244	*/
	245	rect.dx = rect.dy = 0;
	246	rect.width = info->var.xres_virtual;
	247	rect.height = info->var.yres_virtual;
	248	rect.color = 0;
	249	rect.rop = ROP_COPY;
	250	info->fbops->fb_fillrect(info, &rect);
	251	}
	252
	253	static int
cd5428a5	254	nouveau_fbcon_create(struct drm_fb_helper *helper,
8be48d92	255	struct drm_fb_helper_surface_size *sizes)
6ee73861	256	{
cd5428a5	257	struct nouveau_fbdev fbcon = (struct nouveau_fbdev )helper;
ebb945a9	258	struct drm_device *dev = fbcon->dev;
77145f1c	259	struct nouveau_drm *drm = nouveau_drm(dev);
ebb945a9	260	struct nouveau_device *device = nv_device(drm->device);
6ee73861	261	struct fb_info *info;
6ee73861 BS	262	struct drm_framebuffer *fb;
6ee73861 BS	263	struct nouveau_framebuffer *nouveau_fb;
45143cb5	264	struct nouveau_channel *chan;
6ee73861	265	struct nouveau_bo *nvbo;
308e5bcb	266	struct drm_mode_fb_cmd2 mode_cmd;
1471ca9a	267	struct pci_dev *pdev = dev->pdev;
6ee73861 BS	268	int size, ret;
6ee73861 BS	269
38651674 DA	270	mode_cmd.width = sizes->surface_width;
38651674 DA	271	mode_cmd.height = sizes->surface_height;
6ee73861	272
308e5bcb JB	273	mode_cmd.pitches[0] = mode_cmd.width * (sizes->surface_bpp >> 3);
308e5bcb JB	274	mode_cmd.pitches[0] = roundup(mode_cmd.pitches[0], 256);
6ee73861	275
308e5bcb JB	276	mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
	277	sizes->surface_depth);
	278
	279	size = mode_cmd.pitches[0] * mode_cmd.height;
1c7059e4	280	size = roundup(size, PAGE_SIZE);
6ee73861	281
f6d4e621 BS	282	ret = nouveau_gem_new(dev, size, 0, NOUVEAU_GEM_DOMAIN_VRAM,
f6d4e621 BS	283	0, 0x0000, &nvbo);
6ee73861	284	if (ret) {
ebb945a9	285	NV_ERROR(drm, "failed to allocate framebuffer\n");
6ee73861 BS	286	goto out;
	287	}
	288
	289	ret = nouveau_bo_pin(nvbo, TTM_PL_FLAG_VRAM);
	290	if (ret) {
ebb945a9	291	NV_ERROR(drm, "failed to pin fb: %d\n", ret);
6ee73861 BS	292	nouveau_bo_ref(NULL, &nvbo);
	293	goto out;
	294	}
	295
	296	ret = nouveau_bo_map(nvbo);
	297	if (ret) {
ebb945a9	298	NV_ERROR(drm, "failed to map fb: %d\n", ret);
6ee73861 BS	299	nouveau_bo_unpin(nvbo);
	300	nouveau_bo_ref(NULL, &nvbo);
	301	goto out;
	302	}
	303
ebb945a9 BS	304	chan = nouveau_nofbaccel ? NULL : drm->channel;
	305	if (chan && device->card_type >= NV_50) {
	306	ret = nouveau_bo_vma_add(nvbo, nv_client(chan->cli)->vm,
	307	&fbcon->nouveau_fb.vma);
45143cb5	308	if (ret) {
ebb945a9	309	NV_ERROR(drm, "failed to map fb into chan: %d\n", ret);
45143cb5 BS	310	chan = NULL;
	311	}
	312	}
	313
6ee73861 BS	314	mutex_lock(&dev->struct_mutex);
6ee73861 BS	315
ebb945a9	316	info = framebuffer_alloc(0, &pdev->dev);
6ee73861	317	if (!info) {
6ee73861	318	ret = -ENOMEM;
6ee73861 BS	319	goto out_unref;
	320	}
	321
4abe3520 DA	322	ret = fb_alloc_cmap(&info->cmap, 256, 0);
4abe3520 DA	323	if (ret) {
6ee73861 BS	324	ret = -ENOMEM;
	325	goto out_unref;
	326	}
	327
ebb945a9	328	info->par = fbcon;
38651674	329
ebb945a9	330	nouveau_framebuffer_init(dev, &fbcon->nouveau_fb, &mode_cmd, nvbo);
38651674	331
ebb945a9	332	nouveau_fb = &fbcon->nouveau_fb;
8be48d92	333	fb = &nouveau_fb->base;
38651674	334
8be48d92	335	/* setup helper */
ebb945a9 BS	336	fbcon->helper.fb = fb;
ebb945a9 BS	337	fbcon->helper.fbdev = info;
6ee73861 BS	338
6ee73861 BS	339	strcpy(info->fix.id, "nouveaufb");
a32ed69d MK	340	if (nouveau_nofbaccel)
	341	info->flags = FBINFO_DEFAULT \| FBINFO_HWACCEL_DISABLED;
	342	else
	343	info->flags = FBINFO_DEFAULT \| FBINFO_HWACCEL_COPYAREA \|
	344	FBINFO_HWACCEL_FILLRECT \|
	345	FBINFO_HWACCEL_IMAGEBLIT;
8fd4bd22	346	info->flags \|= FBINFO_CAN_FORCE_OUTPUT;
ceed5f30	347	info->fbops = &nouveau_fbcon_sw_ops;
f01a9720 BS	348	info->fix.smem_start = nvbo->bo.mem.bus.base +
f01a9720 BS	349	nvbo->bo.mem.bus.offset;
6ee73861 BS	350	info->fix.smem_len = size;
	351
	352	info->screen_base = nvbo_kmap_obj_iovirtual(nouveau_fb->nvbo);
	353	info->screen_size = size;
	354
01f2c773	355	drm_fb_helper_fill_fix(info, fb->pitches[0], fb->depth);
ebb945a9	356	drm_fb_helper_fill_var(info, &fbcon->helper, sizes->fb_width, sizes->fb_height);
1471ca9a	357
fb2a99e1	358	/* Use default scratch pixmap (info->pixmap.flags = FB_PIXMAP_SYSTEM) */
6ee73861	359
6a6b73f2 BS	360	mutex_unlock(&dev->struct_mutex);
6a6b73f2 BS	361
ebb945a9	362	if (chan) {
ceed5f30	363	ret = -ENODEV;
ebb945a9	364	if (device->card_type < NV_50)
ceed5f30 BS	365	ret = nv04_fbcon_accel_init(info);
ceed5f30 BS	366	else
ebb945a9	367	if (device->card_type < NV_C0)
ceed5f30	368	ret = nv50_fbcon_accel_init(info);
ddbaf79a BS	369	else
ddbaf79a BS	370	ret = nvc0_fbcon_accel_init(info);
ceed5f30 BS	371
	372	if (ret == 0)
	373	info->fbops = &nouveau_fbcon_ops;
0735f62e	374	}
6ee73861	375
ebb945a9	376	nouveau_fbcon_zfill(dev, fbcon);
6ee73861 BS	377
6ee73861 BS	378	/* To allow resizeing without swapping buffers */
ebb945a9 BS	379	NV_INFO(drm, "allocated %dx%d fb: 0x%lx, bo %p\n",
	380	nouveau_fb->base.width, nouveau_fb->base.height,
	381	nvbo->bo.offset, nvbo);
6ee73861	382
6a9ee8af	383	vga_switcheroo_client_fb_set(dev->pdev, info);
6ee73861 BS	384	return 0;
	385
	386	out_unref:
	387	mutex_unlock(&dev->struct_mutex);
	388	out:
	389	return ret;
	390	}
	391
eb1f8e4f DA	392	void
eb1f8e4f DA	393	nouveau_fbcon_output_poll_changed(struct drm_device *dev)
6ee73861	394	{
77145f1c	395	struct nouveau_drm *drm = nouveau_drm(dev);
ebb945a9	396	drm_fb_helper_hotplug_event(&drm->fbcon->helper);
6ee73861 BS	397	}
6ee73861 BS	398
6e86e041	399	static int
ebb945a9	400	nouveau_fbcon_destroy(struct drm_device dev, struct nouveau_fbdev fbcon)
6ee73861	401	{
ebb945a9	402	struct nouveau_framebuffer *nouveau_fb = &fbcon->nouveau_fb;
6ee73861 BS	403	struct fb_info *info;
6ee73861 BS	404
ebb945a9 BS	405	if (fbcon->helper.fbdev) {
ebb945a9 BS	406	info = fbcon->helper.fbdev;
6ee73861	407	unregister_framebuffer(info);
4abe3520 DA	408	if (info->cmap.len)
4abe3520 DA	409	fb_dealloc_cmap(&info->cmap);
8be48d92 DA	410	framebuffer_release(info);
8be48d92 DA	411	}
6ee73861	412
8be48d92	413	if (nouveau_fb->nvbo) {
6ee73861	414	nouveau_bo_unmap(nouveau_fb->nvbo);
45143cb5	415	nouveau_bo_vma_del(nouveau_fb->nvbo, &nouveau_fb->vma);
bc9025bd	416	drm_gem_object_unreference_unlocked(nouveau_fb->nvbo->gem);
6ee73861	417	nouveau_fb->nvbo = NULL;
6ee73861	418	}
ebb945a9	419	drm_fb_helper_fini(&fbcon->helper);
36206361	420	drm_framebuffer_unregister_private(&nouveau_fb->base);
38651674	421	drm_framebuffer_cleanup(&nouveau_fb->base);
6ee73861 BS	422	return 0;
6ee73861 BS	423	}
846975a9 MS	424
	425	void nouveau_fbcon_gpu_lockup(struct fb_info *info)
	426	{
ebb945a9	427	struct nouveau_fbdev *fbcon = info->par;
77145f1c	428	struct nouveau_drm *drm = nouveau_drm(fbcon->dev);
846975a9	429
ebb945a9	430	NV_ERROR(drm, "GPU lockup - switching to software fbcon\n");
846975a9 MS	431	info->flags \|= FBINFO_HWACCEL_DISABLED;
846975a9 MS	432	}
38651674	433
4abe3520 DA	434	static struct drm_fb_helper_funcs nouveau_fbcon_helper_funcs = {
	435	.gamma_set = nouveau_fbcon_gamma_set,
	436	.gamma_get = nouveau_fbcon_gamma_get,
cd5428a5	437	.fb_probe = nouveau_fbcon_create,
4abe3520 DA	438	};
	439
	440
ebb945a9 BS	441	int
ebb945a9 BS	442	nouveau_fbcon_init(struct drm_device *dev)
38651674	443	{
77145f1c	444	struct nouveau_drm *drm = nouveau_drm(dev);
ebb945a9 BS	445	struct nouveau_fb *pfb = nouveau_fb(drm->device);
ebb945a9 BS	446	struct nouveau_fbdev *fbcon;
1e482f75	447	int preferred_bpp;
5a79395b	448	int ret;
8be48d92	449
ebb945a9 BS	450	if (!dev->mode_config.num_crtc)
	451	return 0;
	452
	453	fbcon = kzalloc(sizeof(struct nouveau_fbdev), GFP_KERNEL);
	454	if (!fbcon)
8be48d92 DA	455	return -ENOMEM;
8be48d92 DA	456
ebb945a9 BS	457	fbcon->dev = dev;
	458	drm->fbcon = fbcon;
	459	fbcon->helper.funcs = &nouveau_fbcon_helper_funcs;
8be48d92	460
ebb945a9	461	ret = drm_fb_helper_init(dev, &fbcon->helper,
9bd0c15f	462	dev->mode_config.num_crtc, 4);
5a79395b	463	if (ret) {
ebb945a9	464	kfree(fbcon);
5a79395b CW	465	return ret;
	466	}
	467
ebb945a9	468	drm_fb_helper_single_add_all_connectors(&fbcon->helper);
1e482f75	469
ebb945a9	470	if (pfb->ram.size <= 32 * 1024 * 1024)
1e482f75	471	preferred_bpp = 8;
ebb945a9 BS	472	else
ebb945a9 BS	473	if (pfb->ram.size <= 64 * 1024 * 1024)
1e482f75 MS	474	preferred_bpp = 16;
	475	else
	476	preferred_bpp = 32;
	477
76a39dbf DV	478	/* disable all the possible outputs/crtcs before entering KMS mode */
	479	drm_helper_disable_unused_functions(dev);
	480
ebb945a9	481	drm_fb_helper_initial_config(&fbcon->helper, preferred_bpp);
38651674 DA	482	return 0;
	483	}
	484
ebb945a9 BS	485	void
ebb945a9 BS	486	nouveau_fbcon_fini(struct drm_device *dev)
38651674	487	{
77145f1c	488	struct nouveau_drm *drm = nouveau_drm(dev);
8be48d92	489
ebb945a9	490	if (!drm->fbcon)
8be48d92 DA	491	return;
8be48d92 DA	492
ebb945a9 BS	493	nouveau_fbcon_destroy(dev, drm->fbcon);
	494	kfree(drm->fbcon);
	495	drm->fbcon = NULL;
38651674 DA	496	}
	497
	498	void nouveau_fbcon_save_disable_accel(struct drm_device *dev)
	499	{
77145f1c	500	struct nouveau_drm *drm = nouveau_drm(dev);
38651674	501
ebb945a9 BS	502	drm->fbcon->saved_flags = drm->fbcon->helper.fbdev->flags;
ebb945a9 BS	503	drm->fbcon->helper.fbdev->flags \|= FBINFO_HWACCEL_DISABLED;
38651674 DA	504	}
	505
	506	void nouveau_fbcon_restore_accel(struct drm_device *dev)
	507	{
77145f1c	508	struct nouveau_drm *drm = nouveau_drm(dev);
ebb945a9	509	drm->fbcon->helper.fbdev->flags = drm->fbcon->saved_flags;
38651674 DA	510	}
	511
	512	void nouveau_fbcon_set_suspend(struct drm_device *dev, int state)
	513	{
77145f1c	514	struct nouveau_drm *drm = nouveau_drm(dev);
cf41d53b BS	515	console_lock();
	516	if (state == 0)
	517	nouveau_fbcon_save_disable_accel(dev);
ebb945a9	518	fb_set_suspend(drm->fbcon->helper.fbdev, state);
cf41d53b BS	519	if (state == 1)
	520	nouveau_fbcon_restore_accel(dev);
	521	console_unlock();
38651674 DA	522	}
	523
	524	void nouveau_fbcon_zfill_all(struct drm_device *dev)
	525	{
77145f1c	526	struct nouveau_drm *drm = nouveau_drm(dev);
ebb945a9	527	nouveau_fbcon_zfill(dev, drm->fbcon);
38651674	528	}