diff options
Diffstat (limited to 'drivers/gpu/drm/arm/display/komeda/komeda_event.c')
| -rw-r--r-- | drivers/gpu/drm/arm/display/komeda/komeda_event.c | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_event.c b/drivers/gpu/drm/arm/display/komeda/komeda_event.c new file mode 100644 index 000000000..53f944e66 --- /dev/null +++ b/drivers/gpu/drm/arm/display/komeda/komeda_event.c @@ -0,0 +1,158 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * (C) COPYRIGHT 2019 ARM Limited. All rights reserved. + * Author: James.Qian.Wang <james.qian.wang@arm.com> + * + */ +#include <drm/drm_atomic.h> +#include <drm/drm_print.h> + +#include "komeda_dev.h" + +struct komeda_str { + char *str; + u32 sz; + u32 len; +}; + +/* return 0 on success, < 0 on no space. + */ +__printf(2, 3) +static int komeda_sprintf(struct komeda_str *str, const char *fmt, ...) +{ + va_list args; + int num, free_sz; + int err; + + free_sz = str->sz - str->len - 1; + if (free_sz <= 0) + return -ENOSPC; + + va_start(args, fmt); + + num = vsnprintf(str->str + str->len, free_sz, fmt, args); + + va_end(args); + + if (num < free_sz) { + str->len += num; + err = 0; + } else { + str->len = str->sz - 1; + err = -ENOSPC; + } + + return err; +} + +static void evt_sprintf(struct komeda_str *str, u64 evt, const char *msg) +{ + if (evt) + komeda_sprintf(str, msg); +} + +static void evt_str(struct komeda_str *str, u64 events) +{ + if (events == 0ULL) { + komeda_sprintf(str, "None"); + return; + } + + evt_sprintf(str, events & KOMEDA_EVENT_VSYNC, "VSYNC|"); + evt_sprintf(str, events & KOMEDA_EVENT_FLIP, "FLIP|"); + evt_sprintf(str, events & KOMEDA_EVENT_EOW, "EOW|"); + evt_sprintf(str, events & KOMEDA_EVENT_MODE, "OP-MODE|"); + + evt_sprintf(str, events & KOMEDA_EVENT_URUN, "UNDERRUN|"); + evt_sprintf(str, events & KOMEDA_EVENT_OVR, "OVERRUN|"); + + /* GLB error */ + evt_sprintf(str, events & KOMEDA_ERR_MERR, "MERR|"); + evt_sprintf(str, events & KOMEDA_ERR_FRAMETO, "FRAMETO|"); + + /* DOU error */ + evt_sprintf(str, events & KOMEDA_ERR_DRIFTTO, "DRIFTTO|"); + evt_sprintf(str, events & KOMEDA_ERR_FRAMETO, "FRAMETO|"); + evt_sprintf(str, events & KOMEDA_ERR_TETO, "TETO|"); + evt_sprintf(str, events & KOMEDA_ERR_CSCE, "CSCE|"); + + /* LPU errors or events */ + evt_sprintf(str, events & KOMEDA_EVENT_IBSY, "IBSY|"); + evt_sprintf(str, events & KOMEDA_EVENT_EMPTY, "EMPTY|"); + evt_sprintf(str, events & KOMEDA_EVENT_FULL, "FULL|"); + evt_sprintf(str, events & KOMEDA_ERR_AXIE, "AXIE|"); + evt_sprintf(str, events & KOMEDA_ERR_ACE0, "ACE0|"); + evt_sprintf(str, events & KOMEDA_ERR_ACE1, "ACE1|"); + evt_sprintf(str, events & KOMEDA_ERR_ACE2, "ACE2|"); + evt_sprintf(str, events & KOMEDA_ERR_ACE3, "ACE3|"); + + /* LPU TBU errors*/ + evt_sprintf(str, events & KOMEDA_ERR_TCF, "TCF|"); + evt_sprintf(str, events & KOMEDA_ERR_TTNG, "TTNG|"); + evt_sprintf(str, events & KOMEDA_ERR_TITR, "TITR|"); + evt_sprintf(str, events & KOMEDA_ERR_TEMR, "TEMR|"); + evt_sprintf(str, events & KOMEDA_ERR_TTF, "TTF|"); + + /* CU errors*/ + evt_sprintf(str, events & KOMEDA_ERR_CPE, "COPROC|"); + evt_sprintf(str, events & KOMEDA_ERR_ZME, "ZME|"); + evt_sprintf(str, events & KOMEDA_ERR_CFGE, "CFGE|"); + evt_sprintf(str, events & KOMEDA_ERR_TEMR, "TEMR|"); + + if (str->len > 0 && (str->str[str->len - 1] == '|')) { + str->str[str->len - 1] = 0; + str->len--; + } +} + +static bool is_new_frame(struct komeda_events *a) +{ + return (a->pipes[0] | a->pipes[1]) & + (KOMEDA_EVENT_FLIP | KOMEDA_EVENT_EOW); +} + +void komeda_print_events(struct komeda_events *evts, struct drm_device *dev) +{ + u64 print_evts = 0; + static bool en_print = true; + struct komeda_dev *mdev = dev->dev_private; + u16 const err_verbosity = mdev->err_verbosity; + u64 evts_mask = evts->global | evts->pipes[0] | evts->pipes[1]; + + /* reduce the same msg print, only print the first evt for one frame */ + if (evts->global || is_new_frame(evts)) + en_print = true; + if (!(err_verbosity & KOMEDA_DEV_PRINT_DISABLE_RATELIMIT) && !en_print) + return; + + if (err_verbosity & KOMEDA_DEV_PRINT_ERR_EVENTS) + print_evts |= KOMEDA_ERR_EVENTS; + if (err_verbosity & KOMEDA_DEV_PRINT_WARN_EVENTS) + print_evts |= KOMEDA_WARN_EVENTS; + if (err_verbosity & KOMEDA_DEV_PRINT_INFO_EVENTS) + print_evts |= KOMEDA_INFO_EVENTS; + + if (evts_mask & print_evts) { + char msg[256]; + struct komeda_str str; + struct drm_printer p = drm_info_printer(dev->dev); + + str.str = msg; + str.sz = sizeof(msg); + str.len = 0; + + komeda_sprintf(&str, "gcu: "); + evt_str(&str, evts->global); + komeda_sprintf(&str, ", pipes[0]: "); + evt_str(&str, evts->pipes[0]); + komeda_sprintf(&str, ", pipes[1]: "); + evt_str(&str, evts->pipes[1]); + + DRM_ERROR("err detect: %s\n", msg); + if ((err_verbosity & KOMEDA_DEV_PRINT_DUMP_STATE_ON_EVENT) && + (evts_mask & (KOMEDA_ERR_EVENTS | KOMEDA_WARN_EVENTS))) + drm_state_dump(dev, &p); + + en_print = false; + } +} |