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27 March 2024, 02:37:15 UTC
Revision 3d18e33735a02b1a90aecf14410bf3edbfd4d3dc authored by Lyude on 11 May 2017, 23:31:12 UTC, committed by Alex Deucher on 24 May 2017, 20:46:43 UTC 
drm/radeon: Unbreak HPD handling for r600+
 
We end up reading the interrupt register for HPD5, and then writing it
to HPD6 which on systems without anything using HPD5 results in
permanently disabling hotplug on one of the display outputs after the
first time we acknowledge a hotplug interrupt from the GPU.

This code is really bad. But for now, let's just fix this. I will
hopefully have a large patch series to refactor all of this soon.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Lyude <lyude@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
1 parent 2275a3a
Raw File
Tip revision: 3d18e33735a02b1a90aecf14410bf3edbfd4d3dc authored by Lyude on 11 May 2017, 23:31:12 UTC
drm/radeon: Unbreak HPD handling for r600+
Tip revision: 3d18e33
ecc_curve_defs.h 
#ifndef _CRYTO_ECC_CURVE_DEFS_H
#define _CRYTO_ECC_CURVE_DEFS_H

struct ecc_point {
	u64 *x;
	u64 *y;
	u8 ndigits;
};

struct ecc_curve {
	char *name;
	struct ecc_point g;
	u64 *p;
	u64 *n;
};

/* NIST P-192 */
static u64 nist_p192_g_x[] = { 0xF4FF0AFD82FF1012ull, 0x7CBF20EB43A18800ull,
				0x188DA80EB03090F6ull };
static u64 nist_p192_g_y[] = { 0x73F977A11E794811ull, 0x631011ED6B24CDD5ull,
				0x07192B95FFC8DA78ull };
static u64 nist_p192_p[] = { 0xFFFFFFFFFFFFFFFFull, 0xFFFFFFFFFFFFFFFEull,
				0xFFFFFFFFFFFFFFFFull };
static u64 nist_p192_n[] = { 0x146BC9B1B4D22831ull, 0xFFFFFFFF99DEF836ull,
				0xFFFFFFFFFFFFFFFFull };
static struct ecc_curve nist_p192 = {
	.name = "nist_192",
	.g = {
		.x = nist_p192_g_x,
		.y = nist_p192_g_y,
		.ndigits = 3,
	},
	.p = nist_p192_p,
	.n = nist_p192_n
};

/* NIST P-256 */
static u64 nist_p256_g_x[] = { 0xF4A13945D898C296ull, 0x77037D812DEB33A0ull,
				0xF8BCE6E563A440F2ull, 0x6B17D1F2E12C4247ull };
static u64 nist_p256_g_y[] = { 0xCBB6406837BF51F5ull, 0x2BCE33576B315ECEull,
				0x8EE7EB4A7C0F9E16ull, 0x4FE342E2FE1A7F9Bull };
static u64 nist_p256_p[] = { 0xFFFFFFFFFFFFFFFFull, 0x00000000FFFFFFFFull,
				0x0000000000000000ull, 0xFFFFFFFF00000001ull };
static u64 nist_p256_n[] = { 0xF3B9CAC2FC632551ull, 0xBCE6FAADA7179E84ull,
				0xFFFFFFFFFFFFFFFFull, 0xFFFFFFFF00000000ull };
static struct ecc_curve nist_p256 = {
	.name = "nist_256",
	.g = {
		.x = nist_p256_g_x,
		.y = nist_p256_g_y,
		.ndigits = 4,
	},
	.p = nist_p256_p,
	.n = nist_p256_n
};

#endif
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