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rtkit: Add basic crashlog support

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Signed-off-by: Hector Martin <marcan@marcan.st>
This commit is contained in:
Hector Martin 2022-01-17 04:27:20 +09:00
parent 9b5cb569e4
commit 15bce29775
1 changed files with 58 additions and 1 deletions
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59
src/rtkit.c
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@ -96,6 +96,8 @@ struct rtkit_dev {
struct rtkit_buffer ioreport_bfr;
u32 syslog_cnt, syslog_size;
bool crashed;
};
struct syslog_log {
@ -105,6 +107,22 @@ struct syslog_log {
char msg[];
};
struct crashlog_hdr {
u32 type;
u32 ver;
u32 total_size;
u32 flags;
u8 _padding[16];
};
struct crashlog_entry {
u32 type;
u32 _padding;
u32 flags;
u32 len;
u8 payload[];
};
rtkit_dev_t *rtkit_init(const char *name, asc_dev_t *asc, dart_dev_t *dart,
iova_domain_t *dart_iovad, sart_dev_t *sart)
{
@ -293,10 +311,41 @@ error:
return false;
}
static void rtkit_crashed(rtkit_dev_t *rtk)
{
struct crashlog_hdr *hdr = rtk->crashlog_bfr.bfr;
rtk->crashed = true;
rtkit_printf("IOP crashed!\n");
if (hdr->type != 'CLHE') {
rtkit_printf("bad crashlog header 0x%x @ %p\n", hdr->type, hdr);
return;
}
struct crashlog_entry *p = (void *)(hdr + 1);
rtkit_printf("== CRASH INFO ==\n");
while (p->type != 'CLHE') {
switch (p->type) {
case 'Cstr':
rtkit_printf(" Message %d: %s\n", p->payload[0], &p->payload[4]);
break;
default:
rtkit_printf(" 0x%x\n", p->type);
break;
}
p = ((void *)p) + p->len;
}
}
bool rtkit_recv(rtkit_dev_t *rtk, struct rtkit_message *msg)
{
struct asc_message asc_msg;
if (rtk->crashed)
return -1;
while (asc_recv(rtk->asc, &asc_msg)) {
if (asc_msg.msg1 >= 0x100) {
rtkit_printf("WARNING: received message for invalid endpoint %x >= 0x100\n",
@ -353,7 +402,12 @@ bool rtkit_recv(rtkit_dev_t *rtk, struct rtkit_message *msg)
case RTKIT_EP_CRASHLOG:
switch (msgtype) {
case MSG_BUFFER_REQUEST:
rtkit_handle_buffer_request(rtk, msg, &rtk->crashlog_bfr);
if (!rtk->crashlog_bfr.bfr) {
rtkit_handle_buffer_request(rtk, msg, &rtk->crashlog_bfr);
} else {
rtkit_crashed(rtk);
return false;
}
break;
default:
rtkit_printf("unknown crashlog message %x\n", msgtype);
@ -574,6 +628,9 @@ bool rtkit_shutdown(rtkit_dev_t *rtk)
{
struct asc_message msg;
if (rtk->crashed)
return false;
msg.msg0 =
FIELD_PREP(MGMT_TYPE, MGMT_MSG_AP_PWR_STATE) | FIELD_PREP(MGMT_PWR_STATE, RTKIT_POWER_IDLE);
msg.msg1 = RTKIT_EP_MGMT;