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/*
* 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);
}
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