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Revision f2efc6e60089c99c342a6b7da47f1037e06c4296 authored by Shirish S on 30 October 2019, 08:50:46 UTC, committed by Alex Deucher on 06 November 2019, 20:26:53 UTC 
drm/amdgpu: dont schedule jobs while in reset
 
[Why]

doing kthread_park()/unpark() from drm_sched_entity_fini
while GPU reset is in progress defeats all the purpose of
drm_sched_stop->kthread_park.
If drm_sched_entity_fini->kthread_unpark() happens AFTER
drm_sched_stop->kthread_park nothing prevents from another
(third) thread to keep submitting job to HW which will be
picked up by the unparked scheduler thread and try to submit
to HW but fail because the HW ring is deactivated.

[How]
grab the reset lock before calling drm_sched_entity_fini()

Signed-off-by: Shirish S <shirish.s@amd.com>
Suggested-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
1 parent 576daab
Raw File
ecrdsa_defs.h 
/* SPDX-License-Identifier: GPL-2.0+ */
/*
 * Definitions of EC-RDSA Curve Parameters
 *
 * Copyright (c) 2019 Vitaly Chikunov <vt@altlinux.org>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 */

#ifndef _CRYTO_ECRDSA_DEFS_H
#define _CRYTO_ECRDSA_DEFS_H

#include "ecc.h"

#define ECRDSA_MAX_SIG_SIZE (2 * 512 / 8)
#define ECRDSA_MAX_DIGITS (512 / 64)

/*
 * EC-RDSA uses its own set of curves.
 *
 * cp256{a,b,c} curves first defined for GOST R 34.10-2001 in RFC 4357 (as
 * 256-bit {A,B,C}-ParamSet), but inherited for GOST R 34.10-2012 and
 * proposed for use in R 50.1.114-2016 and RFC 7836 as the 256-bit curves.
 */
/* OID_gostCPSignA 1.2.643.2.2.35.1 */
static u64 cp256a_g_x[] = {
	0x0000000000000001ull, 0x0000000000000000ull,
	0x0000000000000000ull, 0x0000000000000000ull, };
static u64 cp256a_g_y[] = {
	0x22ACC99C9E9F1E14ull, 0x35294F2DDF23E3B1ull,
	0x27DF505A453F2B76ull, 0x8D91E471E0989CDAull, };
static u64 cp256a_p[] = { /* p = 2^256 - 617 */
	0xFFFFFFFFFFFFFD97ull, 0xFFFFFFFFFFFFFFFFull,
	0xFFFFFFFFFFFFFFFFull, 0xFFFFFFFFFFFFFFFFull };
static u64 cp256a_n[] = {
	0x45841B09B761B893ull, 0x6C611070995AD100ull,
	0xFFFFFFFFFFFFFFFFull, 0xFFFFFFFFFFFFFFFFull };
static u64 cp256a_a[] = { /* a = p - 3 */
	0xFFFFFFFFFFFFFD94ull, 0xFFFFFFFFFFFFFFFFull,
	0xFFFFFFFFFFFFFFFFull, 0xFFFFFFFFFFFFFFFFull };
static u64 cp256a_b[] = {
	0x00000000000000a6ull, 0x0000000000000000ull,
	0x0000000000000000ull, 0x0000000000000000ull };

static struct ecc_curve gost_cp256a = {
	.name = "cp256a",
	.g = {
		.x = cp256a_g_x,
		.y = cp256a_g_y,
		.ndigits = 256 / 64,
	},
	.p = cp256a_p,
	.n = cp256a_n,
	.a = cp256a_a,
	.b = cp256a_b
};

/* OID_gostCPSignB 1.2.643.2.2.35.2 */
static u64 cp256b_g_x[] = {
	0x0000000000000001ull, 0x0000000000000000ull,
	0x0000000000000000ull, 0x0000000000000000ull, };
static u64 cp256b_g_y[] = {
	0x744BF8D717717EFCull, 0xC545C9858D03ECFBull,
	0xB83D1C3EB2C070E5ull, 0x3FA8124359F96680ull, };
static u64 cp256b_p[] = { /* p = 2^255 + 3225 */
	0x0000000000000C99ull, 0x0000000000000000ull,
	0x0000000000000000ull, 0x8000000000000000ull, };
static u64 cp256b_n[] = {
	0xE497161BCC8A198Full, 0x5F700CFFF1A624E5ull,
	0x0000000000000001ull, 0x8000000000000000ull, };
static u64 cp256b_a[] = { /* a = p - 3 */
	0x0000000000000C96ull, 0x0000000000000000ull,
	0x0000000000000000ull, 0x8000000000000000ull, };
static u64 cp256b_b[] = {
	0x2F49D4CE7E1BBC8Bull, 0xE979259373FF2B18ull,
	0x66A7D3C25C3DF80Aull, 0x3E1AF419A269A5F8ull, };

static struct ecc_curve gost_cp256b = {
	.name = "cp256b",
	.g = {
		.x = cp256b_g_x,
		.y = cp256b_g_y,
		.ndigits = 256 / 64,
	},
	.p = cp256b_p,
	.n = cp256b_n,
	.a = cp256b_a,
	.b = cp256b_b
};

/* OID_gostCPSignC 1.2.643.2.2.35.3 */
static u64 cp256c_g_x[] = {
	0x0000000000000000ull, 0x0000000000000000ull,
	0x0000000000000000ull, 0x0000000000000000ull, };
static u64 cp256c_g_y[] = {
	0x366E550DFDB3BB67ull, 0x4D4DC440D4641A8Full,
	0x3CBF3783CD08C0EEull, 0x41ECE55743711A8Cull, };
static u64 cp256c_p[] = {
	0x7998F7B9022D759Bull, 0xCF846E86789051D3ull,
	0xAB1EC85E6B41C8AAull, 0x9B9F605F5A858107ull,
	/* pre-computed value for Barrett's reduction */
	0xedc283cdd217b5a2ull, 0xbac48fc06398ae59ull,
	0x405384d55f9f3b73ull, 0xa51f176161f1d734ull,
	0x0000000000000001ull, };
static u64 cp256c_n[] = {
	0xF02F3A6598980BB9ull, 0x582CA3511EDDFB74ull,
	0xAB1EC85E6B41C8AAull, 0x9B9F605F5A858107ull, };
static u64 cp256c_a[] = { /* a = p - 3 */
	0x7998F7B9022D7598ull, 0xCF846E86789051D3ull,
	0xAB1EC85E6B41C8AAull, 0x9B9F605F5A858107ull, };
static u64 cp256c_b[] = {
	0x000000000000805aull, 0x0000000000000000ull,
	0x0000000000000000ull, 0x0000000000000000ull, };

static struct ecc_curve gost_cp256c = {
	.name = "cp256c",
	.g = {
		.x = cp256c_g_x,
		.y = cp256c_g_y,
		.ndigits = 256 / 64,
	},
	.p = cp256c_p,
	.n = cp256c_n,
	.a = cp256c_a,
	.b = cp256c_b
};

/* tc512{a,b} curves first recommended in 2013 and then standardized in
 * R 50.1.114-2016 and RFC 7836 for use with GOST R 34.10-2012 (as TC26
 * 512-bit ParamSet{A,B}).
 */
/* OID_gostTC26Sign512A 1.2.643.7.1.2.1.2.1 */
static u64 tc512a_g_x[] = {
	0x0000000000000003ull, 0x0000000000000000ull,
	0x0000000000000000ull, 0x0000000000000000ull,
	0x0000000000000000ull, 0x0000000000000000ull,
	0x0000000000000000ull, 0x0000000000000000ull, };
static u64 tc512a_g_y[] = {
	0x89A589CB5215F2A4ull, 0x8028FE5FC235F5B8ull,
	0x3D75E6A50E3A41E9ull, 0xDF1626BE4FD036E9ull,
	0x778064FDCBEFA921ull, 0xCE5E1C93ACF1ABC1ull,
	0xA61B8816E25450E6ull, 0x7503CFE87A836AE3ull, };
static u64 tc512a_p[] = { /* p = 2^512 - 569 */
	0xFFFFFFFFFFFFFDC7ull, 0xFFFFFFFFFFFFFFFFull,
	0xFFFFFFFFFFFFFFFFull, 0xFFFFFFFFFFFFFFFFull,
	0xFFFFFFFFFFFFFFFFull, 0xFFFFFFFFFFFFFFFFull,
	0xFFFFFFFFFFFFFFFFull, 0xFFFFFFFFFFFFFFFFull, };
static u64 tc512a_n[] = {
	0xCACDB1411F10B275ull, 0x9B4B38ABFAD2B85Dull,
	0x6FF22B8D4E056060ull, 0x27E69532F48D8911ull,
	0xFFFFFFFFFFFFFFFFull, 0xFFFFFFFFFFFFFFFFull,
	0xFFFFFFFFFFFFFFFFull, 0xFFFFFFFFFFFFFFFFull, };
static u64 tc512a_a[] = { /* a = p - 3 */
	0xFFFFFFFFFFFFFDC4ull, 0xFFFFFFFFFFFFFFFFull,
	0xFFFFFFFFFFFFFFFFull, 0xFFFFFFFFFFFFFFFFull,
	0xFFFFFFFFFFFFFFFFull, 0xFFFFFFFFFFFFFFFFull,
	0xFFFFFFFFFFFFFFFFull, 0xFFFFFFFFFFFFFFFFull, };
static u64 tc512a_b[] = {
	0x503190785A71C760ull, 0x862EF9D4EBEE4761ull,
	0x4CB4574010DA90DDull, 0xEE3CB090F30D2761ull,
	0x79BD081CFD0B6265ull, 0x34B82574761CB0E8ull,
	0xC1BD0B2B6667F1DAull, 0xE8C2505DEDFC86DDull, };

static struct ecc_curve gost_tc512a = {
	.name = "tc512a",
	.g = {
		.x = tc512a_g_x,
		.y = tc512a_g_y,
		.ndigits = 512 / 64,
	},
	.p = tc512a_p,
	.n = tc512a_n,
	.a = tc512a_a,
	.b = tc512a_b
};

/* OID_gostTC26Sign512B 1.2.643.7.1.2.1.2.2 */
static u64 tc512b_g_x[] = {
	0x0000000000000002ull, 0x0000000000000000ull,
	0x0000000000000000ull, 0x0000000000000000ull,
	0x0000000000000000ull, 0x0000000000000000ull,
	0x0000000000000000ull, 0x0000000000000000ull, };
static u64 tc512b_g_y[] = {
	0x7E21340780FE41BDull, 0x28041055F94CEEECull,
	0x152CBCAAF8C03988ull, 0xDCB228FD1EDF4A39ull,
	0xBE6DD9E6C8EC7335ull, 0x3C123B697578C213ull,
	0x2C071E3647A8940Full, 0x1A8F7EDA389B094Cull, };
static u64 tc512b_p[] = { /* p = 2^511 + 111 */
	0x000000000000006Full, 0x0000000000000000ull,
	0x0000000000000000ull, 0x0000000000000000ull,
	0x0000000000000000ull, 0x0000000000000000ull,
	0x0000000000000000ull, 0x8000000000000000ull, };
static u64 tc512b_n[] = {
	0xC6346C54374F25BDull, 0x8B996712101BEA0Eull,
	0xACFDB77BD9D40CFAull, 0x49A1EC142565A545ull,
	0x0000000000000001ull, 0x0000000000000000ull,
	0x0000000000000000ull, 0x8000000000000000ull, };
static u64 tc512b_a[] = { /* a = p - 3 */
	0x000000000000006Cull, 0x0000000000000000ull,
	0x0000000000000000ull, 0x0000000000000000ull,
	0x0000000000000000ull, 0x0000000000000000ull,
	0x0000000000000000ull, 0x8000000000000000ull, };
static u64 tc512b_b[] = {
	0xFB8CCBC7C5140116ull, 0x50F78BEE1FA3106Eull,
	0x7F8B276FAD1AB69Cull, 0x3E965D2DB1416D21ull,
	0xBF85DC806C4B289Full, 0xB97C7D614AF138BCull,
	0x7E3E06CF6F5E2517ull, 0x687D1B459DC84145ull, };

static struct ecc_curve gost_tc512b = {
	.name = "tc512b",
	.g = {
		.x = tc512b_g_x,
		.y = tc512b_g_y,
		.ndigits = 512 / 64,
	},
	.p = tc512b_p,
	.n = tc512b_n,
	.a = tc512b_a,
	.b = tc512b_b
};

#endif
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