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/*
* Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*/
#include <linux/delay.h>
#include "gk20a/gk20a.h"
#include "gp10b/fb_gp10b.h"
#include <nvgpu/hw/gp106/hw_fb_gp106.h>
#define HW_SCRUB_TIMEOUT_DEFAULT 100 /* usec */
#define HW_SCRUB_TIMEOUT_MAX 2000000 /* usec */
static void gp106_fb_reset(struct gk20a *g)
{
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;
}
udelay(HW_SCRUB_TIMEOUT_DEFAULT);
} while (--retries);
}
void gp106_init_fb(struct gpu_ops *gops)
{
gp10b_init_fb(gops);
gops->fb.init_fs_state = NULL;
gops->fb.reset = gp106_fb_reset;
}
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