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ioat(4): Add ddb "show ioat <unit>" debugger command

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Sponsored by:	EMC / Isilon Storage Division
This commit is contained in:
Conrad Meyer 2016-06-09 01:31:09 +00:00
parent 714ac00292
commit 0bb35deb07
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=301712
1 changed files with 99 additions and 0 deletions
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99
sys/dev/ioat/ioat.c
View file

@ -27,6 +27,8 @@
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_ddb.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
@ -48,6 +50,10 @@ __FBSDID("$FreeBSD$");
#include <machine/resource.h>
#include <machine/stdarg.h>
#ifdef DDB
#include <ddb/ddb.h>
#endif
#include "ioat.h"
#include "ioat_hw.h"
#include "ioat_internal.h"
@ -2090,3 +2096,96 @@ ioat_drain_locked(struct ioat_softc *ioat)
while (ioat->refcnt > 0)
msleep(IOAT_REFLK, IOAT_REFLK, 0, "ioat_drain", 0);
}
#ifdef DDB
#define _db_show_lock(lo) LOCK_CLASS(lo)->lc_ddb_show(lo)
#define db_show_lock(lk) _db_show_lock(&(lk)->lock_object)
DB_SHOW_COMMAND(ioat, db_show_ioat)
{
struct ioat_softc *sc;
unsigned idx;
if (!have_addr)
goto usage;
idx = (unsigned)addr;
if (addr >= ioat_channel_index)
goto usage;
sc = ioat_channel[idx];
db_printf("ioat softc at %p\n", sc);
if (sc == NULL)
return;
db_printf(" version: %d\n", sc->version);
db_printf(" chan_idx: %u\n", sc->chan_idx);
db_printf(" submit_lock: ");
db_show_lock(&sc->submit_lock);
db_printf(" capabilities: %b\n", (int)sc->capabilities,
IOAT_DMACAP_STR);
db_printf(" cached_intrdelay: %u\n", sc->cached_intrdelay);
db_printf(" *comp_update: 0x%jx\n", (uintmax_t)*sc->comp_update);
db_printf(" timer:\n");
db_printf(" c_time: %ju\n", (uintmax_t)sc->timer.c_time);
db_printf(" c_arg: %p\n", sc->timer.c_arg);
db_printf(" c_func: %p\n", sc->timer.c_func);
db_printf(" c_lock: %p\n", sc->timer.c_lock);
db_printf(" c_flags: 0x%x\n", (unsigned)sc->timer.c_flags);
db_printf(" quiescing: %d\n", (int)sc->quiescing);
db_printf(" destroying: %d\n", (int)sc->destroying);
db_printf(" is_resize_pending: %d\n", (int)sc->is_resize_pending);
db_printf(" is_completion_pending: %d\n", (int)sc->is_completion_pending);
db_printf(" is_reset_pending: %d\n", (int)sc->is_reset_pending);
db_printf(" is_channel_running: %d\n", (int)sc->is_channel_running);
db_printf(" intrdelay_supported: %d\n", (int)sc->intrdelay_supported);
db_printf(" head: %u\n", sc->head);
db_printf(" tail: %u\n", sc->tail);
db_printf(" hw_head: %u\n", sc->hw_head);
db_printf(" ring_size_order: %u\n", sc->ring_size_order);
db_printf(" last_seen: 0x%lx\n", sc->last_seen);
db_printf(" ring: %p\n", sc->ring);
db_printf(" cleanup_lock: ");
db_show_lock(&sc->cleanup_lock);
db_printf(" refcnt: %u\n", sc->refcnt);
#ifdef INVARIANTS
CTASSERT(IOAT_NUM_REF_KINDS == 2);
db_printf(" refkinds: [ENG=%u, DESCR=%u]\n", sc->refkinds[0],
sc->refkinds[1]);
#endif
db_printf(" stats:\n");
db_printf(" interrupts: %lu\n", sc->stats.interrupts);
db_printf(" descriptors_processed: %lu\n", sc->stats.descriptors_processed);
db_printf(" descriptors_error: %lu\n", sc->stats.descriptors_error);
db_printf(" descriptors_submitted: %lu\n", sc->stats.descriptors_submitted);
db_printf(" channel_halts: %u\n", sc->stats.channel_halts);
db_printf(" last_halt_chanerr: %u\n", sc->stats.last_halt_chanerr);
if (db_pager_quit)
return;
db_printf(" hw status:\n");
db_printf(" status: 0x%lx\n", ioat_get_chansts(sc));
db_printf(" chanctrl: 0x%x\n",
(unsigned)ioat_read_2(sc, IOAT_CHANCTRL_OFFSET));
db_printf(" chancmd: 0x%x\n",
(unsigned)ioat_read_1(sc, IOAT_CHANCMD_OFFSET));
db_printf(" dmacount: 0x%x\n",
(unsigned)ioat_read_2(sc, IOAT_DMACOUNT_OFFSET));
db_printf(" chainaddr: 0x%lx\n",
ioat_read_double_4(sc, IOAT_CHAINADDR_OFFSET_LOW));
db_printf(" chancmp: 0x%lx\n",
ioat_read_double_4(sc, IOAT_CHANCMP_OFFSET_LOW));
db_printf(" chanerr: %b\n",
(int)ioat_read_4(sc, IOAT_CHANERR_OFFSET), IOAT_CHANERR_STR);
return;
usage:
db_printf("usage: show ioat <0-%u>\n", ioat_channel_index);
return;
}
#endif /* DDB */