1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * (C) COPYRIGHT 2019 ARM Limited. All rights reserved.
4 * Author: James.Qian.Wang <james.qian.wang@arm.com>
5 *
6 */
7 #include <drm/drm_atomic.h>
8 #include <drm/drm_print.h>
9
10 #include "komeda_dev.h"
11
12 struct komeda_str {
13 char *str;
14 u32 sz;
15 u32 len;
16 };
17
18 /* return 0 on success, < 0 on no space.
19 */
20 __printf(2, 3)
komeda_sprintf(struct komeda_str * str,const char * fmt,...)21 static int komeda_sprintf(struct komeda_str *str, const char *fmt, ...)
22 {
23 va_list args;
24 int num, free_sz;
25 int err;
26
27 free_sz = str->sz - str->len - 1;
28 if (free_sz <= 0)
29 return -ENOSPC;
30
31 va_start(args, fmt);
32
33 num = vsnprintf(str->str + str->len, free_sz, fmt, args);
34
35 va_end(args);
36
37 if (num < free_sz) {
38 str->len += num;
39 err = 0;
40 } else {
41 str->len = str->sz - 1;
42 err = -ENOSPC;
43 }
44
45 return err;
46 }
47
evt_sprintf(struct komeda_str * str,u64 evt,const char * msg)48 static void evt_sprintf(struct komeda_str *str, u64 evt, const char *msg)
49 {
50 if (evt)
51 komeda_sprintf(str, msg);
52 }
53
evt_str(struct komeda_str * str,u64 events)54 static void evt_str(struct komeda_str *str, u64 events)
55 {
56 if (events == 0ULL) {
57 komeda_sprintf(str, "None");
58 return;
59 }
60
61 evt_sprintf(str, events & KOMEDA_EVENT_VSYNC, "VSYNC|");
62 evt_sprintf(str, events & KOMEDA_EVENT_FLIP, "FLIP|");
63 evt_sprintf(str, events & KOMEDA_EVENT_EOW, "EOW|");
64 evt_sprintf(str, events & KOMEDA_EVENT_MODE, "OP-MODE|");
65
66 evt_sprintf(str, events & KOMEDA_EVENT_URUN, "UNDERRUN|");
67 evt_sprintf(str, events & KOMEDA_EVENT_OVR, "OVERRUN|");
68
69 /* GLB error */
70 evt_sprintf(str, events & KOMEDA_ERR_MERR, "MERR|");
71 evt_sprintf(str, events & KOMEDA_ERR_FRAMETO, "FRAMETO|");
72
73 /* DOU error */
74 evt_sprintf(str, events & KOMEDA_ERR_DRIFTTO, "DRIFTTO|");
75 evt_sprintf(str, events & KOMEDA_ERR_FRAMETO, "FRAMETO|");
76 evt_sprintf(str, events & KOMEDA_ERR_TETO, "TETO|");
77 evt_sprintf(str, events & KOMEDA_ERR_CSCE, "CSCE|");
78
79 /* LPU errors or events */
80 evt_sprintf(str, events & KOMEDA_EVENT_IBSY, "IBSY|");
81 evt_sprintf(str, events & KOMEDA_EVENT_EMPTY, "EMPTY|");
82 evt_sprintf(str, events & KOMEDA_EVENT_FULL, "FULL|");
83 evt_sprintf(str, events & KOMEDA_ERR_AXIE, "AXIE|");
84 evt_sprintf(str, events & KOMEDA_ERR_ACE0, "ACE0|");
85 evt_sprintf(str, events & KOMEDA_ERR_ACE1, "ACE1|");
86 evt_sprintf(str, events & KOMEDA_ERR_ACE2, "ACE2|");
87 evt_sprintf(str, events & KOMEDA_ERR_ACE3, "ACE3|");
88
89 /* LPU TBU errors*/
90 evt_sprintf(str, events & KOMEDA_ERR_TCF, "TCF|");
91 evt_sprintf(str, events & KOMEDA_ERR_TTNG, "TTNG|");
92 evt_sprintf(str, events & KOMEDA_ERR_TITR, "TITR|");
93 evt_sprintf(str, events & KOMEDA_ERR_TEMR, "TEMR|");
94 evt_sprintf(str, events & KOMEDA_ERR_TTF, "TTF|");
95
96 /* CU errors*/
97 evt_sprintf(str, events & KOMEDA_ERR_CPE, "COPROC|");
98 evt_sprintf(str, events & KOMEDA_ERR_ZME, "ZME|");
99 evt_sprintf(str, events & KOMEDA_ERR_CFGE, "CFGE|");
100 evt_sprintf(str, events & KOMEDA_ERR_TEMR, "TEMR|");
101
102 if (str->len > 0 && (str->str[str->len - 1] == '|')) {
103 str->str[str->len - 1] = 0;
104 str->len--;
105 }
106 }
107
is_new_frame(struct komeda_events * a)108 static bool is_new_frame(struct komeda_events *a)
109 {
110 return (a->pipes[0] | a->pipes[1]) &
111 (KOMEDA_EVENT_FLIP | KOMEDA_EVENT_EOW);
112 }
113
komeda_print_events(struct komeda_events * evts,struct drm_device * dev)114 void komeda_print_events(struct komeda_events *evts, struct drm_device *dev)
115 {
116 u64 print_evts = 0;
117 static bool en_print = true;
118 struct komeda_dev *mdev = dev->dev_private;
119 u16 const err_verbosity = mdev->err_verbosity;
120 u64 evts_mask = evts->global | evts->pipes[0] | evts->pipes[1];
121
122 /* reduce the same msg print, only print the first evt for one frame */
123 if (evts->global || is_new_frame(evts))
124 en_print = true;
125 if (!(err_verbosity & KOMEDA_DEV_PRINT_DISABLE_RATELIMIT) && !en_print)
126 return;
127
128 if (err_verbosity & KOMEDA_DEV_PRINT_ERR_EVENTS)
129 print_evts |= KOMEDA_ERR_EVENTS;
130 if (err_verbosity & KOMEDA_DEV_PRINT_WARN_EVENTS)
131 print_evts |= KOMEDA_WARN_EVENTS;
132 if (err_verbosity & KOMEDA_DEV_PRINT_INFO_EVENTS)
133 print_evts |= KOMEDA_INFO_EVENTS;
134
135 if (evts_mask & print_evts) {
136 char msg[256];
137 struct komeda_str str;
138 struct drm_printer p = drm_info_printer(dev->dev);
139
140 str.str = msg;
141 str.sz = sizeof(msg);
142 str.len = 0;
143
144 komeda_sprintf(&str, "gcu: ");
145 evt_str(&str, evts->global);
146 komeda_sprintf(&str, ", pipes[0]: ");
147 evt_str(&str, evts->pipes[0]);
148 komeda_sprintf(&str, ", pipes[1]: ");
149 evt_str(&str, evts->pipes[1]);
150
151 DRM_ERROR("err detect: %s\n", msg);
152 if ((err_verbosity & KOMEDA_DEV_PRINT_DUMP_STATE_ON_EVENT) &&
153 (evts_mask & (KOMEDA_ERR_EVENTS | KOMEDA_WARN_EVENTS)))
154 drm_state_dump(dev, &p);
155
156 en_print = false;
157 }
158 }
159