Spring MegaChange #1.

----

Make a device for each ISP- really usable only with devfs and add an ioctl
entry point (this can be used to (re)set debug levels, reset the HBA,
rescan the fabric, issue lips, etc).

----

Add in a kernel thread for Fibre Channel cards. The purpose of this
thread is to be woken up to clean up after Fibre Channel events
block things.  Basically, any FC event that casts doubt on the
location or identify of FC devices blocks the queues. When, and
if, we get the PORT DATABASE CHANGED or NAME SERVER DATABASE CHANGED
async event, we activate the kthread which will then, in full thread
context, re-evaluate the local loop and/or the fabric. When it's
satisfied that things are stable, it can then release the blocked
queues and let commands flow again.

The prior mechanism was a lazy evaluation. That is, the next command
to come down the pipe after change events would pay the full price
for re-evaluation. And if this was done off of a softcall, it really
could hang up the system.

These changes brings the FreeBSD port more in line with the Solaris,
Linux and NetBSD ports. It also, more importantly, gets us being
more proactive about topology changes which could then be reflected
upwards to CAM so that the periph driver can be informed sooner
rather than later when things arrive or depart.

---

Add in the (correct) usage of locking macros- we now have lock transition
macros which allow us to transition from holding the CAM lock (Giant)
and grabbing the softc lock and vice versa. Switch over to having this
HBA do real locking. Some folks claim this won't be a win. They're right.
But you have to start somewhere, and this will begin to teach us how
to DTRT for HBAs, etc.

--

Start putting in prototype 2300 support.  Add back in LIP
and Loop Reset as async events that each platform will handle.
Add in another int_bogus instrumentation point.

Do some more substantial target mode cleanups.

MFC after:	8 weeks

1 files changed, 7 insertions, 3 deletions

diff --git a/sys/dev/isp/isp_target.h b/sys/dev/isp/isp_target.h
index fde87ce..c94bda8 100644
--- a/sys/dev/isp/isp_target.h
+++ b/sys/dev/isp/isp_target.h
@@ -361,13 +361,16 @@ typedef struct {
 #define CT_INVAL	0x06	/* request for disabled lun */
 #define CT_NOPATH	0x07	/* invalid ITL nexus */
 #define	CT_INVRXID	0x08	/* (FC only) Invalid RX_ID */
+#define	CT_DATA_OVER	0x09	/* (FC only) Data Overrun */
 #define CT_RSELTMO	0x0A	/* reselection timeout after 2 tries */
 #define CT_TIMEOUT	0x0B	/* timed out */
 #define CT_RESET	0x0E	/* SCSI Bus Reset occurred */
 #define	CT_PARITY	0x0F	/* Uncorrectable Parity Error */
+#define	CT_BUS_ERROR	0x10	/* (FC Only) DMA PCI Error */
 #define	CT_PANIC	0x13	/* Unrecoverable Error */
 #define CT_PHASE_ERROR	0x14	/* Bus phase sequence error */
 #define CT_BDR_MSG	0x17	/* Bus Device Reset msg received */
+#define	CT_DATA_UNDER	0x15	/* (FC only) Data Underrun */
 #define CT_TERMINATED	0x19	/* due to Terminate Transfer mbox cmd */
 #define	CT_PORTNOTAVAIL	0x28	/* port not available */
 #define	CT_LOGOUT	0x29	/* port logout */
@@ -682,10 +685,11 @@ int isp_target_notify(struct ispsoftc *, void *, u_int16_t *);
 
 /*
  * Enable/Disable/Modify a logical unit.
+ * (softc, cmd, bus, tgt, lun, cmd_cnt, inotify_cnt, opaque)
  */
-#define	DFLT_CMD_CNT	32	/* XX */
-#define	DFLT_INOTIFY	(4)
-int isp_lun_cmd(struct ispsoftc *, int, int, int, int, u_int32_t);
+#define	DFLT_CMND_CNT	32
+#define	DFLT_INOT_CNT	4
+int isp_lun_cmd(struct ispsoftc *, int, int, int, int, int, int, u_int32_t);
 
 /*
  * General request queue 'put' routine for target mode entries.