tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: MIT
2/*
3 * Copyright © 2022 Intel Corporation
4 */
5
6#include "xe_guc_log.h"
7
8#include <drm/drm_managed.h>
9
10#include "xe_bo.h"
11#include "xe_gt.h"
12#include "xe_map.h"
13#include "xe_module.h"
14
15static struct xe_gt *
16log_to_gt(struct xe_guc_log *log)
17{
18 return container_of(log, struct xe_gt, uc.guc.log);
19}
20
21static struct xe_device *
22log_to_xe(struct xe_guc_log *log)
23{
24 return gt_to_xe(log_to_gt(log));
25}
26
27static size_t guc_log_size(void)
28{
29 /*
30 * GuC Log buffer Layout
31 *
32 * +===============================+ 00B
33 * | Crash dump state header |
34 * +-------------------------------+ 32B
35 * | Debug state header |
36 * +-------------------------------+ 64B
37 * | Capture state header |
38 * +-------------------------------+ 96B
39 * | |
40 * +===============================+ PAGE_SIZE (4KB)
41 * | Crash Dump logs |
42 * +===============================+ + CRASH_SIZE
43 * | Debug logs |
44 * +===============================+ + DEBUG_SIZE
45 * | Capture logs |
46 * +===============================+ + CAPTURE_SIZE
47 */
48 return PAGE_SIZE + CRASH_BUFFER_SIZE + DEBUG_BUFFER_SIZE +
49 CAPTURE_BUFFER_SIZE;
50}
51
52void xe_guc_log_print(struct xe_guc_log *log, struct drm_printer *p)
53{
54 struct xe_device *xe = log_to_xe(log);
55 size_t size;
56 int i, j;
57
58 xe_assert(xe, log->bo);
59
60 size = log->bo->size;
61
62#define DW_PER_READ 128
63 xe_assert(xe, !(size % (DW_PER_READ * sizeof(u32))));
64 for (i = 0; i < size / sizeof(u32); i += DW_PER_READ) {
65 u32 read[DW_PER_READ];
66
67 xe_map_memcpy_from(xe, read, &log->bo->vmap, i * sizeof(u32),
68 DW_PER_READ * sizeof(u32));
69#define DW_PER_PRINT 4
70 for (j = 0; j < DW_PER_READ / DW_PER_PRINT; ++j) {
71 u32 *print = read + j * DW_PER_PRINT;
72
73 drm_printf(p, "0x%08x 0x%08x 0x%08x 0x%08x\n",
74 *(print + 0), *(print + 1),
75 *(print + 2), *(print + 3));
76 }
77 }
78}
79
80int xe_guc_log_init(struct xe_guc_log *log)
81{
82 struct xe_device *xe = log_to_xe(log);
83 struct xe_tile *tile = gt_to_tile(log_to_gt(log));
84 struct xe_bo *bo;
85
86 bo = xe_managed_bo_create_pin_map(xe, tile, guc_log_size(),
87 XE_BO_CREATE_SYSTEM_BIT |
88 XE_BO_CREATE_GGTT_BIT);
89 if (IS_ERR(bo))
90 return PTR_ERR(bo);
91
92 xe_map_memset(xe, &bo->vmap, 0, 0, guc_log_size());
93 log->bo = bo;
94 log->level = xe_modparam.guc_log_level;
95
96 return 0;
97}