/*
 * Copyright (c) 2016-2017, NVIDIA CORPORATION.  All rights reserved.
 *
 * 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 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.
 */

#include "gk20a/gk20a.h"
#include "gp10b/fb_gp10b.h"

#include "fb_gp106.h"

#include <nvgpu/hw/gp106/hw_fb_gp106.h>

#define HW_SCRUB_TIMEOUT_DEFAULT	100 /* usec */
#define HW_SCRUB_TIMEOUT_MAX		2000000 /* usec */

void gp106_fb_reset(struct gk20a *g)
{
	u32 val;

	int retries = HW_SCRUB_TIMEOUT_MAX / HW_SCRUB_TIMEOUT_DEFAULT;
	/* wait for memory to be accessible */
	do {
		u32 w = gk20a_readl(g, fb_niso_scrub_status_r());
		if (fb_niso_scrub_status_flag_v(w)) {
			gk20a_dbg_fn("done");
			break;
		}
		nvgpu_udelay(HW_SCRUB_TIMEOUT_DEFAULT);
	} while (--retries);

	val = gk20a_readl(g, fb_mmu_priv_level_mask_r());
	val &= ~fb_mmu_priv_level_mask_write_violation_m();
	gk20a_writel(g, fb_mmu_priv_level_mask_r(), val);
}