cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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corec37d.c (5399B)


      1/*
      2 * Copyright 2018 Red Hat Inc.
      3 *
      4 * Permission is hereby granted, free of charge, to any person obtaining a
      5 * copy of this software and associated documentation files (the "Software"),
      6 * to deal in the Software without restriction, including without limitation
      7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
      8 * and/or sell copies of the Software, and to permit persons to whom the
      9 * Software is furnished to do so, subject to the following conditions:
     10 *
     11 * The above copyright notice and this permission notice shall be included in
     12 * all copies or substantial portions of the Software.
     13 *
     14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     20 * OTHER DEALINGS IN THE SOFTWARE.
     21 */
     22#include "core.h"
     23#include "head.h"
     24
     25#include <nvif/class.h>
     26#include <nvif/pushc37b.h>
     27#include <nvif/timer.h>
     28
     29#include <nvhw/class/clc37d.h>
     30
     31#include <nouveau_bo.h>
     32
     33int
     34corec37d_wndw_owner(struct nv50_core *core)
     35{
     36	struct nvif_push *push = core->chan.push;
     37	const u32 windows = 8; /*XXX*/
     38	int ret, i;
     39
     40	if ((ret = PUSH_WAIT(push, windows * 2)))
     41		return ret;
     42
     43	for (i = 0; i < windows; i++) {
     44		PUSH_MTHD(push, NVC37D, WINDOW_SET_CONTROL(i),
     45			  NVDEF(NVC37D, WINDOW_SET_CONTROL, OWNER, HEAD(i >> 1)));
     46	}
     47
     48	return 0;
     49}
     50
     51int
     52corec37d_update(struct nv50_core *core, u32 *interlock, bool ntfy)
     53{
     54	struct nvif_push *push = core->chan.push;
     55	int ret;
     56
     57	if ((ret = PUSH_WAIT(push, (ntfy ? 2 * 2 : 0) + 5)))
     58		return ret;
     59
     60	if (ntfy) {
     61		PUSH_MTHD(push, NVC37D, SET_NOTIFIER_CONTROL,
     62			  NVDEF(NVC37D, SET_NOTIFIER_CONTROL, MODE, WRITE) |
     63			  NVVAL(NVC37D, SET_NOTIFIER_CONTROL, OFFSET, NV50_DISP_CORE_NTFY >> 4) |
     64			  NVDEF(NVC37D, SET_NOTIFIER_CONTROL, NOTIFY, ENABLE));
     65	}
     66
     67	PUSH_MTHD(push, NVC37D, SET_INTERLOCK_FLAGS, interlock[NV50_DISP_INTERLOCK_CURS],
     68				SET_WINDOW_INTERLOCK_FLAGS, interlock[NV50_DISP_INTERLOCK_WNDW]);
     69	PUSH_MTHD(push, NVC37D, UPDATE, 0x00000001 |
     70		  NVDEF(NVC37D, UPDATE, SPECIAL_HANDLING, NONE) |
     71		  NVDEF(NVC37D, UPDATE, INHIBIT_INTERRUPTS, FALSE));
     72
     73	if (ntfy) {
     74		PUSH_MTHD(push, NVC37D, SET_NOTIFIER_CONTROL,
     75			  NVDEF(NVC37D, SET_NOTIFIER_CONTROL, NOTIFY, DISABLE));
     76	}
     77
     78	return PUSH_KICK(push);
     79}
     80
     81int
     82corec37d_ntfy_wait_done(struct nouveau_bo *bo, u32 offset,
     83			struct nvif_device *device)
     84{
     85	s64 time = nvif_msec(device, 2000ULL,
     86		if (NVBO_TD32(bo, offset, NV_DISP_NOTIFIER, _0, STATUS, ==, FINISHED))
     87			break;
     88		usleep_range(1, 2);
     89	);
     90	return time < 0 ? time : 0;
     91}
     92
     93void
     94corec37d_ntfy_init(struct nouveau_bo *bo, u32 offset)
     95{
     96	NVBO_WR32(bo, offset, NV_DISP_NOTIFIER, _0,
     97			NVDEF(NV_DISP_NOTIFIER, _0, STATUS, NOT_BEGUN));
     98	NVBO_WR32(bo, offset, NV_DISP_NOTIFIER, _1, 0);
     99	NVBO_WR32(bo, offset, NV_DISP_NOTIFIER, _2, 0);
    100	NVBO_WR32(bo, offset, NV_DISP_NOTIFIER, _3, 0);
    101}
    102
    103int corec37d_caps_init(struct nouveau_drm *drm, struct nv50_disp *disp)
    104{
    105	int ret;
    106
    107	ret = nvif_object_ctor(&disp->disp->object, "dispCaps", 0,
    108			       GV100_DISP_CAPS, NULL, 0, &disp->caps);
    109	if (ret) {
    110		NV_ERROR(drm,
    111			 "Failed to init notifier caps region: %d\n",
    112			 ret);
    113		return ret;
    114	}
    115
    116	ret = nvif_object_map(&disp->caps, NULL, 0);
    117	if (ret) {
    118		NV_ERROR(drm,
    119			 "Failed to map notifier caps region: %d\n",
    120			 ret);
    121		return ret;
    122	}
    123
    124	return 0;
    125}
    126
    127static int
    128corec37d_init(struct nv50_core *core)
    129{
    130	struct nvif_push *push = core->chan.push;
    131	const u32 windows = 8; /*XXX*/
    132	int ret, i;
    133
    134	if ((ret = PUSH_WAIT(push, 2 + windows * 5)))
    135		return ret;
    136
    137	PUSH_MTHD(push, NVC37D, SET_CONTEXT_DMA_NOTIFIER, core->chan.sync.handle);
    138
    139	for (i = 0; i < windows; i++) {
    140		PUSH_MTHD(push, NVC37D, WINDOW_SET_WINDOW_FORMAT_USAGE_BOUNDS(i),
    141			  NVDEF(NVC37D, WINDOW_SET_WINDOW_FORMAT_USAGE_BOUNDS, RGB_PACKED1BPP, TRUE) |
    142			  NVDEF(NVC37D, WINDOW_SET_WINDOW_FORMAT_USAGE_BOUNDS, RGB_PACKED2BPP, TRUE) |
    143			  NVDEF(NVC37D, WINDOW_SET_WINDOW_FORMAT_USAGE_BOUNDS, RGB_PACKED4BPP, TRUE) |
    144			  NVDEF(NVC37D, WINDOW_SET_WINDOW_FORMAT_USAGE_BOUNDS, RGB_PACKED8BPP, TRUE) |
    145			  NVDEF(NVC37D, WINDOW_SET_WINDOW_FORMAT_USAGE_BOUNDS, YUV_PACKED422, TRUE),
    146
    147					WINDOW_SET_WINDOW_ROTATED_FORMAT_USAGE_BOUNDS(i), 0x00000000);
    148
    149		PUSH_MTHD(push, NVC37D, WINDOW_SET_WINDOW_USAGE_BOUNDS(i),
    150			  NVVAL(NVC37D, WINDOW_SET_WINDOW_USAGE_BOUNDS, MAX_PIXELS_FETCHED_PER_LINE, 0x7fff) |
    151			  NVDEF(NVC37D, WINDOW_SET_WINDOW_USAGE_BOUNDS, INPUT_LUT, USAGE_1025) |
    152			  NVDEF(NVC37D, WINDOW_SET_WINDOW_USAGE_BOUNDS, INPUT_SCALER_TAPS, TAPS_2) |
    153			  NVDEF(NVC37D, WINDOW_SET_WINDOW_USAGE_BOUNDS, UPSCALING_ALLOWED, FALSE));
    154	}
    155
    156	core->assign_windows = true;
    157	return PUSH_KICK(push);
    158}
    159
    160static const struct nv50_core_func
    161corec37d = {
    162	.init = corec37d_init,
    163	.ntfy_init = corec37d_ntfy_init,
    164	.caps_init = corec37d_caps_init,
    165	.ntfy_wait_done = corec37d_ntfy_wait_done,
    166	.update = corec37d_update,
    167	.wndw.owner = corec37d_wndw_owner,
    168	.head = &headc37d,
    169	.sor = &sorc37d,
    170#if IS_ENABLED(CONFIG_DEBUG_FS)
    171	.crc = &crcc37d,
    172#endif
    173};
    174
    175int
    176corec37d_new(struct nouveau_drm *drm, s32 oclass, struct nv50_core **pcore)
    177{
    178	return core507d_new_(&corec37d, drm, oclass, pcore);
    179}