qeth: add OSA concurrent hardware trap
This patch improves FFDC (first failure data capture) by requesting
a hardware trace in case the device driver, the hardware or a user
detects an error.
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 4dffdbe..92e37f7 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -24,6 +24,7 @@
#include <asm/ebcdic.h>
#include <asm/io.h>
+#include <asm/sysinfo.h>
#include "qeth_core.h"
@@ -349,6 +350,8 @@
card->info.chpid);
netif_carrier_on(card->dev);
card->lan_online = 1;
+ if (card->info.hwtrap)
+ card->info.hwtrap = 2;
qeth_schedule_recovery(card);
return NULL;
case IPA_CMD_MODCCID:
@@ -2573,6 +2576,142 @@
}
EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
+static int qeth_query_ipassists_cb(struct qeth_card *card,
+ struct qeth_reply *reply, unsigned long data)
+{
+ struct qeth_ipa_cmd *cmd;
+
+ QETH_DBF_TEXT(SETUP, 2, "qipasscb");
+
+ cmd = (struct qeth_ipa_cmd *) data;
+ if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
+ card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
+ card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
+ } else {
+ card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
+ card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
+ }
+ QETH_DBF_TEXT(SETUP, 2, "suppenbl");
+ QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_supported);
+ QETH_DBF_TEXT_(SETUP, 2, "%x", cmd->hdr.ipa_enabled);
+ return 0;
+}
+
+int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
+{
+ int rc;
+ struct qeth_cmd_buffer *iob;
+
+ QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
+ iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
+ rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
+ return rc;
+}
+EXPORT_SYMBOL_GPL(qeth_query_ipassists);
+
+static int qeth_query_setdiagass_cb(struct qeth_card *card,
+ struct qeth_reply *reply, unsigned long data)
+{
+ struct qeth_ipa_cmd *cmd;
+ __u16 rc;
+
+ cmd = (struct qeth_ipa_cmd *)data;
+ rc = cmd->hdr.return_code;
+ if (rc)
+ QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
+ else
+ card->info.diagass_support = cmd->data.diagass.ext;
+ return 0;
+}
+
+static int qeth_query_setdiagass(struct qeth_card *card)
+{
+ struct qeth_cmd_buffer *iob;
+ struct qeth_ipa_cmd *cmd;
+
+ QETH_DBF_TEXT(SETUP, 2, "qdiagass");
+ iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
+ cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
+ cmd->data.diagass.subcmd_len = 16;
+ cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
+ return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
+}
+
+static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
+{
+ unsigned long info = get_zeroed_page(GFP_KERNEL);
+ struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
+ struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
+ struct ccw_dev_id ccwid;
+ int level, rc;
+
+ tid->chpid = card->info.chpid;
+ ccw_device_get_id(CARD_RDEV(card), &ccwid);
+ tid->ssid = ccwid.ssid;
+ tid->devno = ccwid.devno;
+ if (!info)
+ return;
+
+ rc = stsi(NULL, 0, 0, 0);
+ if (rc == -ENOSYS)
+ level = rc;
+ else
+ level = (((unsigned int) rc) >> 28);
+
+ if ((level >= 2) && (stsi(info222, 2, 2, 2) != -ENOSYS))
+ tid->lparnr = info222->lpar_number;
+
+ if ((level >= 3) && (stsi(info322, 3, 2, 2) != -ENOSYS)) {
+ EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
+ memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
+ }
+ free_page(info);
+ return;
+}
+
+static int qeth_hw_trap_cb(struct qeth_card *card,
+ struct qeth_reply *reply, unsigned long data)
+{
+ struct qeth_ipa_cmd *cmd;
+ __u16 rc;
+
+ cmd = (struct qeth_ipa_cmd *)data;
+ rc = cmd->hdr.return_code;
+ if (rc)
+ QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
+ return 0;
+}
+
+int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
+{
+ struct qeth_cmd_buffer *iob;
+ struct qeth_ipa_cmd *cmd;
+
+ QETH_DBF_TEXT(SETUP, 2, "diagtrap");
+ iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
+ cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE);
+ cmd->data.diagass.subcmd_len = 80;
+ cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
+ cmd->data.diagass.type = 1;
+ cmd->data.diagass.action = action;
+ switch (action) {
+ case QETH_DIAGS_TRAP_ARM:
+ cmd->data.diagass.options = 0x0003;
+ cmd->data.diagass.ext = 0x00010000 +
+ sizeof(struct qeth_trap_id);
+ qeth_get_trap_id(card,
+ (struct qeth_trap_id *)cmd->data.diagass.cdata);
+ break;
+ case QETH_DIAGS_TRAP_DISARM:
+ cmd->data.diagass.options = 0x0001;
+ break;
+ case QETH_DIAGS_TRAP_CAPTURE:
+ break;
+ }
+ return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
+}
+EXPORT_SYMBOL_GPL(qeth_hw_trap);
+
int qeth_check_qdio_errors(struct qeth_card *card, struct qdio_buffer *buf,
unsigned int qdio_error, const char *dbftext)
{
@@ -3983,6 +4122,15 @@
QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
goto out;
}
+
+ card->options.ipa4.supported_funcs = 0;
+ card->options.adp.supported_funcs = 0;
+ card->info.diagass_support = 0;
+ qeth_query_ipassists(card, QETH_PROT_IPV4);
+ if (qeth_is_supported(card, IPA_SETADAPTERPARMS))
+ qeth_query_setadapterparms(card);
+ if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST))
+ qeth_query_setdiagass(card);
return 0;
out:
dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "