#include <linux/kernel.h> /* For printk. */
#include <linux/string.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
#include <linux/ipmi_msgdefs.h> /* for completion codes */
#include "ipmi_si_sm.h"
#define BT_DEBUG_ENABLE 1
#define BT_DEBUG_MSG 2
#define BT_DEBUG_STATES 4
+module_param(bt_debug, int, 0644);
+MODULE_PARM_DESC(bt_debug, "debug bitmask, 1=enable, 2=messages, 4=states");
/* Typical "Get BT Capabilities" values are 2-3 retries, 5-10 seconds,
and 64 byte buffers. However, one HP implementation wants 255 bytes of
Since the Open IPMI architecture is single-message oriented at this
stage, the queue depth of BT is of no concern. */
-#define BT_NORMAL_TIMEOUT 2000000 /* seconds in microseconds */
+#define BT_NORMAL_TIMEOUT 5000000 /* seconds in microseconds */
#define BT_RETRY_LIMIT 2
#define BT_RESET_DELAY 6000000 /* 6 seconds after warm reset */
msg_len = bt->read_count - 2; /* account for length & seq */
/* Always NetFn, Cmd, cCode */
if (msg_len < 3 || msg_len > IPMI_MAX_MSG_LENGTH) {
- printk(KERN_WARNING "BT results: bad msg_len = %d\n", msg_len);
+ printk(KERN_DEBUG "BT results: bad msg_len = %d\n", msg_len);
data[0] = bt->write_data[1] | 0x4; /* Kludge a response */
data[1] = bt->write_data[3];
data[2] = IPMI_ERR_UNSPECIFIED;
BT_CONTROL(BT_B_BUSY);
BT_CONTROL(BT_CLR_WR_PTR);
BT_CONTROL(BT_SMS_ATN);
-#ifdef DEVELOPMENT_ONLY_NOT_FOR_PRODUCTION
+
if (BT_STATUS & BT_B2H_ATN) {
int i;
BT_CONTROL(BT_H_BUSY);
BMC2HOST;
BT_CONTROL(BT_H_BUSY);
}
-#endif
}
static inline void write_all_bytes(struct si_sm_data *bt)
printk ("\n");
}
if (bt->seq != bt->write_data[2]) /* idiot check */
- printk(KERN_WARNING "BT: internal error: sequence mismatch\n");
+ printk(KERN_DEBUG "BT: internal error: sequence mismatch\n");
/* per the spec, the (NetFn, Seq, Cmd) tuples should match */
if ((bt->read_data[3] == bt->write_data[3]) && /* Cmd */
bt->timeout = BT_NORMAL_TIMEOUT; /* various places want to retry */
status = BT_STATUS;
- printk(KERN_WARNING "BT: %s in %s %s ", reason, STATE2TXT,
+ printk(KERN_DEBUG "BT: %s in %s %s\n", reason, STATE2TXT,
STATUS2TXT(buf));
(bt->error_retries)++;
if (bt->error_retries > BT_RETRY_LIMIT) {
- printk("retry limit (%d) exceeded\n", BT_RETRY_LIMIT);
+ printk(KERN_DEBUG "retry limit (%d) exceeded\n", BT_RETRY_LIMIT);
bt->state = BT_STATE_HOSED;
if (!bt->nonzero_status)
printk(KERN_ERR "IPMI: BT stuck, try power cycle\n");
- else if (bt->seq == FIRST_SEQ + BT_RETRY_LIMIT) {
- /* most likely during insmod */
- printk(KERN_WARNING "IPMI: BT reset (takes 5 secs)\n");
+ else if (bt->error_retries <= BT_RETRY_LIMIT + 1) {
+ printk(KERN_DEBUG "IPMI: BT reset (takes 5 secs)\n");
bt->state = BT_STATE_RESET1;
}
return;
/* Sometimes the BMC queues get in an "off-by-one" state...*/
if ((bt->state == BT_STATE_B2H_WAIT) && (status & BT_B2H_ATN)) {
- printk("retry B2H_WAIT\n");
+ printk(KERN_DEBUG "retry B2H_WAIT\n");
return;
}
- printk("restart command\n");
+ printk(KERN_DEBUG "restart command\n");
bt->state = BT_STATE_RESTART;
}
return SI_SM_HOSED;
if (bt->state != BT_STATE_IDLE) { /* do timeout test */
-
- /* Certain states, on error conditions, can lock up a CPU
- because they are effectively in an infinite loop with
- CALL_WITHOUT_DELAY (right back here with time == 0).
- Prevent infinite lockup by ALWAYS decrementing timeout. */
-
- /* FIXME: bt_event is sometimes called with time > BT_NORMAL_TIMEOUT
- (noticed in ipmi_smic_sm.c January 2004) */
-
- if ((time <= 0) || (time >= BT_NORMAL_TIMEOUT))
- time = 100;
bt->timeout -= time;
if ((bt->timeout < 0) && (bt->state < BT_STATE_RESET1)) {
error_recovery(bt, "timed out");
break;
case BT_STATE_RESTART: /* don't reset retries! */
+ reset_flags(bt);
bt->write_data[2] = ++bt->seq;
bt->read_count = 0;
bt->nonzero_status = 0;