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[Qemu-devel] [PATCH v4 11/15] s390-bios: cio error handling
From: |
Jason J. Herne |
Subject: |
[Qemu-devel] [PATCH v4 11/15] s390-bios: cio error handling |
Date: |
Mon, 11 Mar 2019 11:21:29 -0400 |
Add verbose error output for when unexpected i/o errors happen. This eases the
burden of debugging and reporting i/o errors. No error information is printed
in the success case, here is an example of what is output on error:
cio device error
ssid : 0x0000000000000000
cssid : 0x0000000000000000
sch_no: 0x0000000000000000
Interrupt Response Block Data:
Function Ctrl : [Start]
Activity Ctrl : [Start-Pending]
Status Ctrl : [Alert] [Primary] [Secondary] [Status-Pending]
Device Status : [Unit-Check]
Channel Status :
cpa=: 0x000000007f8d6038
prev_ccw=: 0x0000000000000000
this_ccw=: 0x0000000000000000
Eckd Dasd Sense Data (fmt 32-bytes):
Sense Condition Flags :
Residual Count =: 0x0000000000000000
Phys Drive ID =: 0x000000000000009e
low cyl address =: 0x0000000000000000
head addr & hi cyl =: 0x0000000000000000
format/message =: 0x0000000000000008
fmt-dependent[0-7] =: 0x0000000000000004
fmt-dependent[8-15]=: 0xe561282305082fff
prog action code =: 0x0000000000000016
Configuration info =: 0x00000000000040e0
mcode / hi-cyl =: 0x0000000000000000
cyl & head addr [0]=: 0x0000000000000000
cyl & head addr [1]=: 0x0000000000000000
cyl & head addr [2]=: 0x0000000000000000
Signed-off-by: Jason J. Herne <address@hidden>
---
pc-bios/s390-ccw/cio.c | 237 +++++++++++++++++++++++++++++++++++++++++++++++-
pc-bios/s390-ccw/libc.h | 11 +++
2 files changed, 247 insertions(+), 1 deletion(-)
diff --git a/pc-bios/s390-ccw/cio.c b/pc-bios/s390-ccw/cio.c
index 58f63e4..54fd6ad 100644
--- a/pc-bios/s390-ccw/cio.c
+++ b/pc-bios/s390-ccw/cio.c
@@ -85,6 +85,228 @@ static bool irb_error(Irb *irb)
return irb->scsw.dstat != (SCSW_DSTAT_DEVEND | SCSW_DSTAT_CHEND);
}
+static void print_eckd_dasd_sense_data(SenseDataEckdDasd *sd)
+{
+ char msgline[512];
+
+ if (sd->config_info & 0x8000) {
+ sclp_print("Eckd Dasd Sense Data (fmt 24-bytes):\n");
+ } else {
+ sclp_print("Eckd Dasd Sense Data (fmt 32-bytes):\n");
+ }
+
+ strcat(msgline, " Sense Condition Flags :");
+ if (sd->status[0] & SNS_STAT0_CMD_REJECT) {
+ strcat(msgline, " [Cmd-Reject]");
+ }
+ if (sd->status[0] & SNS_STAT0_INTERVENTION_REQ) {
+ strcat(msgline, " [Intervention-Required]");
+ }
+ if (sd->status[0] & SNS_STAT0_BUS_OUT_CHECK) {
+ strcat(msgline, " [Bus-Out-Parity-Check]");
+ }
+ if (sd->status[0] & SNS_STAT0_EQUIPMENT_CHECK) {
+ strcat(msgline, " [Equipment-Check]");
+ }
+ if (sd->status[0] & SNS_STAT0_DATA_CHECK) {
+ strcat(msgline, " [Data-Check]");
+ }
+ if (sd->status[0] & SNS_STAT0_OVERRUN) {
+ strcat(msgline, " [Overrun]");
+ }
+ if (sd->status[0] & SNS_STAT0_INCOMPL_DOMAIN) {
+ strcat(msgline, " [Incomplete-Domain]");
+ }
+
+ if (sd->status[1] & SNS_STAT1_PERM_ERR) {
+ strcat(msgline, " [Permanent-Error]");
+ }
+ if (sd->status[1] & SNS_STAT1_INV_TRACK_FORMAT) {
+ strcat(msgline, " [Invalid-Track-Fmt]");
+ }
+ if (sd->status[1] & SNS_STAT1_EOC) {
+ strcat(msgline, " [End-of-Cyl]");
+ }
+ if (sd->status[1] & SNS_STAT1_MESSAGE_TO_OPER) {
+ strcat(msgline, " [Operator-Msg]");
+ }
+ if (sd->status[1] & SNS_STAT1_NO_REC_FOUND) {
+ strcat(msgline, " [No-Record-Found]");
+ }
+ if (sd->status[1] & SNS_STAT1_FILE_PROTECTED) {
+ strcat(msgline, " [File-Protected]");
+ }
+ if (sd->status[1] & SNS_STAT1_WRITE_INHIBITED) {
+ strcat(msgline, " [Write-Inhibited]");
+ }
+ if (sd->status[1] & SNS_STAT1_IMPRECISE_END) {
+ strcat(msgline, " [Imprecise-Ending]");
+ }
+
+ if (sd->status[2] & SNS_STAT2_REQ_INH_WRITE) {
+ strcat(msgline, " [Req-Inhibit-Write]");
+ }
+ if (sd->status[2] & SNS_STAT2_CORRECTABLE) {
+ strcat(msgline, " [Correctable-Data-Check]");
+ }
+ if (sd->status[2] & SNS_STAT2_FIRST_LOG_ERR) {
+ strcat(msgline, " [First-Error-Log]");
+ }
+ if (sd->status[2] & SNS_STAT2_ENV_DATA_PRESENT) {
+ strcat(msgline, " [Env-Data-Present]");
+ }
+ if (sd->status[2] & SNS_STAT2_IMPRECISE_END) {
+ strcat(msgline, " [Imprecise-End]");
+ }
+ strcat(msgline, "\n");
+ sclp_print(msgline);
+
+ print_int(" Residual Count =", sd->res_count);
+ print_int(" Phys Drive ID =", sd->phys_drive_id);
+ print_int(" low cyl address =", sd->low_cyl_addr);
+ print_int(" head addr & hi cyl =", sd->head_high_cyl_addr);
+ print_int(" format/message =", sd->fmt_msg);
+ print_int(" fmt-dependent[0-7] =", sd->fmt_dependent_info[0]);
+ print_int(" fmt-dependent[8-15]=", sd->fmt_dependent_info[1]);
+ print_int(" prog action code =", sd->program_action_code);
+ print_int(" Configuration info =", sd->config_info);
+ print_int(" mcode / hi-cyl =", sd->mcode_hicyl);
+ print_int(" cyl & head addr [0]=", sd->cyl_head_addr[0]);
+ print_int(" cyl & head addr [1]=", sd->cyl_head_addr[1]);
+ print_int(" cyl & head addr [2]=", sd->cyl_head_addr[2]);
+}
+
+static void print_irb_err(Irb *irb)
+{
+ uint64_t this_ccw = *(uint64_t *)u32toptr(irb->scsw.cpa);
+ uint64_t prev_ccw = *(uint64_t *)u32toptr(irb->scsw.cpa - 8);
+ char msgline[256];
+
+ sclp_print("Interrupt Response Block Data:\n");
+
+ strcat(msgline, " Function Ctrl :");
+ if (irb->scsw.ctrl & SCSW_FCTL_START_FUNC) {
+ strcat(msgline, " [Start]");
+ }
+ if (irb->scsw.ctrl & SCSW_FCTL_HALT_FUNC) {
+ strcat(msgline, " [Halt]");
+ }
+ if (irb->scsw.ctrl & SCSW_FCTL_CLEAR_FUNC) {
+ strcat(msgline, " [Clear]");
+ }
+ strcat(msgline, "\n");
+ sclp_print(msgline);
+
+ msgline[0] = '\0';
+ strcat(msgline, " Activity Ctrl :");
+ if (irb->scsw.ctrl & SCSW_ACTL_RESUME_PEND) {
+ strcat(msgline, " [Resume-Pending]");
+ }
+ if (irb->scsw.ctrl & SCSW_ACTL_START_PEND) {
+ strcat(msgline, " [Start-Pending]");
+ }
+ if (irb->scsw.ctrl & SCSW_ACTL_HALT_PEND) {
+ strcat(msgline, " [Halt-Pending]");
+ }
+ if (irb->scsw.ctrl & SCSW_ACTL_CLEAR_PEND) {
+ strcat(msgline, " [Clear-Pending]");
+ }
+ if (irb->scsw.ctrl & SCSW_ACTL_CH_ACTIVE) {
+ strcat(msgline, " [Channel-Active]");
+ }
+ if (irb->scsw.ctrl & SCSW_ACTL_DEV_ACTIVE) {
+ strcat(msgline, " [Device-Active]");
+ }
+ if (irb->scsw.ctrl & SCSW_ACTL_SUSPENDED) {
+ strcat(msgline, " [Suspended]");
+ }
+ strcat(msgline, "\n");
+ sclp_print(msgline);
+
+ msgline[0] = '\0';
+ strcat(msgline, " Status Ctrl :");
+ if (irb->scsw.ctrl & SCSW_SCTL_ALERT) {
+ strcat(msgline, " [Alert]");
+ }
+ if (irb->scsw.ctrl & SCSW_SCTL_INTERMED) {
+ strcat(msgline, " [Intermediate]");
+ }
+ if (irb->scsw.ctrl & SCSW_SCTL_PRIMARY) {
+ strcat(msgline, " [Primary]");
+ }
+ if (irb->scsw.ctrl & SCSW_SCTL_SECONDARY) {
+ strcat(msgline, " [Secondary]");
+ }
+ if (irb->scsw.ctrl & SCSW_SCTL_STATUS_PEND) {
+ strcat(msgline, " [Status-Pending]");
+ }
+
+ strcat(msgline, "\n");
+ sclp_print(msgline);
+
+ msgline[0] = '\0';
+ strcat(msgline, " Device Status :");
+ if (irb->scsw.dstat & SCSW_DSTAT_ATTN) {
+ strcat(msgline, " [Attention]");
+ }
+ if (irb->scsw.dstat & SCSW_DSTAT_STATMOD) {
+ strcat(msgline, " [Status-Modifier]");
+ }
+ if (irb->scsw.dstat & SCSW_DSTAT_CUEND) {
+ strcat(msgline, " [Ctrl-Unit-End]");
+ }
+ if (irb->scsw.dstat & SCSW_DSTAT_BUSY) {
+ strcat(msgline, " [Busy]");
+ }
+ if (irb->scsw.dstat & SCSW_DSTAT_CHEND) {
+ strcat(msgline, " [Channel-End]");
+ }
+ if (irb->scsw.dstat & SCSW_DSTAT_DEVEND) {
+ strcat(msgline, " [Device-End]");
+ }
+ if (irb->scsw.dstat & SCSW_DSTAT_UCHK) {
+ strcat(msgline, " [Unit-Check]");
+ }
+ if (irb->scsw.dstat & SCSW_DSTAT_UEXCP) {
+ strcat(msgline, " [Unit-Exception]");
+ }
+ strcat(msgline, "\n");
+ sclp_print(msgline);
+
+ msgline[0] = '\0';
+ strcat(msgline, " Channel Status :");
+ if (irb->scsw.cstat & SCSW_CSTAT_PCINT) {
+ strcat(msgline, " [Program-Ctrl-Interruption]");
+ }
+ if (irb->scsw.cstat & SCSW_CSTAT_BADLEN) {
+ strcat(msgline, " [Incorrect-Length]");
+ }
+ if (irb->scsw.cstat & SCSW_CSTAT_PROGCHK) {
+ strcat(msgline, " [Program-Check]");
+ }
+ if (irb->scsw.cstat & SCSW_CSTAT_PROTCHK) {
+ strcat(msgline, " [Protection-Check]");
+ }
+ if (irb->scsw.cstat & SCSW_CSTAT_CHDCHK) {
+ strcat(msgline, " [Channel-Data-Check]");
+ }
+ if (irb->scsw.cstat & SCSW_CSTAT_CHCCHK) {
+ strcat(msgline, " [Channel-Ctrl-Check]");
+ }
+ if (irb->scsw.cstat & SCSW_CSTAT_ICCHK) {
+ strcat(msgline, " [Interface-Ctrl-Check]");
+ }
+ if (irb->scsw.cstat & SCSW_CSTAT_CHAINCHK) {
+ strcat(msgline, " [Chaining-Check]");
+ }
+ strcat(msgline, "\n");
+ sclp_print(msgline);
+
+ print_int(" cpa=", irb->scsw.cpa);
+ print_int(" prev_ccw=", prev_ccw);
+ print_int(" this_ccw=", this_ccw);
+}
+
/*
* Handles executing ssch, tsch and returns the irb obtained from tsch.
* Returns 0 on success, -1 if unexpected status pending and we need to retry,
@@ -142,7 +364,7 @@ static int __do_cio(SubChannelId schid, uint32_t ccw_addr,
int fmt, Irb *irb)
* cpus are generating or receiving I/O interrupts. So either run it in a
* single-cpu environment or make sure all other cpus are not doing I/O and
* have I/O interrupts masked off. We also assume that only one device is
- * active (generating i/o interrupts).
+ * active (generating i/o interrupts).
*
* Returns non-zero on error.
*/
@@ -180,6 +402,19 @@ int do_cio(SubChannelId schid, uint16_t cutype, uint32_t
ccw_addr, int fmt)
continue;
}
+ sclp_print("cio device error\n");
+ print_int(" ssid ", schid.ssid);
+ print_int(" cssid ", schid.cssid);
+ print_int(" sch_no", schid.sch_no);
+ print_int(" ctrl-unit type", cutype);
+ sclp_print("\n");
+ print_irb_err(&irb);
+ if (cutype == CU_TYPE_DASD_3990 || cutype == CU_TYPE_DASD_2107 ||
+ cutype == CU_TYPE_UNKNOWN) {
+ if (!basic_sense(schid, cutype, &sd, sizeof(sd))) {
+ print_eckd_dasd_sense_data(&sd);
+ }
+ }
rc = -1;
break;
}
diff --git a/pc-bios/s390-ccw/libc.h b/pc-bios/s390-ccw/libc.h
index 818517f..bcdc457 100644
--- a/pc-bios/s390-ccw/libc.h
+++ b/pc-bios/s390-ccw/libc.h
@@ -67,6 +67,17 @@ static inline size_t strlen(const char *str)
return i;
}
+static inline char *strcat(char *dest, const char *src)
+{
+ int i;
+ char *dest_end = dest + strlen(dest);
+
+ for (i = 0; i <= strlen(src); i++) {
+ dest_end[i] = src[i];
+ }
+ return dest;
+}
+
static inline int isdigit(int c)
{
return (c >= '0') && (c <= '9');
--
2.7.4
- [Qemu-devel] [PATCH v4 00/15] s390: vfio-ccw dasd ipl support, Jason J. Herne, 2019/03/11
- [Qemu-devel] [PATCH v4 10/15] s390-bios: Support for running format-0/1 channel programs, Jason J. Herne, 2019/03/11
- [Qemu-devel] [PATCH v4 07/15] s390-bios: Decouple channel i/o logic from virtio, Jason J. Herne, 2019/03/11
- [Qemu-devel] [PATCH v4 11/15] s390-bios: cio error handling,
Jason J. Herne <=
- [Qemu-devel] [PATCH v4 13/15] s390-bios: Use control unit type to determine boot method, Jason J. Herne, 2019/03/11
- [Qemu-devel] [PATCH v4 03/15] s390-bios: decouple common boot logic from virtio, Jason J. Herne, 2019/03/11
- [Qemu-devel] [PATCH v4 08/15] s390-bios: Map low core memory, Jason J. Herne, 2019/03/11
- [Qemu-devel] [PATCH v4 04/15] s390-bios: Extend find_dev() for non-virtio devices, Jason J. Herne, 2019/03/11
- [Qemu-devel] [PATCH v4 15/15] s390-bios: Support booting from real dasd device, Jason J. Herne, 2019/03/11
- [Qemu-devel] [PATCH v4 14/15] s390-bios: Add channel command codes/structs needed for dasd-ipl, Jason J. Herne, 2019/03/11
- [Qemu-devel] [PATCH v4 12/15] s390-bios: Refactor virtio to run channel programs via cio, Jason J. Herne, 2019/03/11