Author: cem
Date: Tue Jul 12 21:52:26 2016
New Revision: 302677
URL: https://svnweb.freebsd.org/changeset/base/302677
Log:
ioat(4): Print some more useful information about the ring from ddb "show
ioat"
Modified:
head/sys/dev/ioat/ioat.c
Modified: head/sys/dev/ioat/ioat.c
==============================================================================
--- head/sys/dev/ioat/ioat.c Tue Jul 12 21:49:08 2016 (r302676)
+++ head/sys/dev/ioat/ioat.c Tue Jul 12 21:52:26 2016 (r302677)
@@ -2203,7 +2203,7 @@ DB_SHOW_COMMAND(ioat, db_show_ioat)
if (!have_addr)
goto usage;
idx = (unsigned)addr;
- if (addr >= ioat_channel_index)
+ if (idx >= ioat_channel_index)
goto usage;
sc = ioat_channel[idx];
@@ -2251,6 +2251,35 @@ DB_SHOW_COMMAND(ioat, db_show_ioat)
db_printf(" last_seen: 0x%lx\n", sc->last_seen);
db_printf(" ring: %p\n", sc->ring);
+ db_printf(" ring[%u] (tail):\n", sc->tail %
+ (1 << sc->ring_size_order));
+ db_printf(" id: %u\n", ioat_get_ring_entry(sc, sc->tail)->id);
+ db_printf(" addr: 0x%lx\n",
+ ioat_get_ring_entry(sc, sc->tail)->hw_desc_bus_addr);
+ db_printf(" next: 0x%lx\n",
+ ioat_get_ring_entry(sc, sc->tail)->u.generic->next);
+
+ db_printf(" ring[%u] (head - 1):\n", (sc->head - 1) %
+ (1 << sc->ring_size_order));
+ db_printf(" id: %u\n", ioat_get_ring_entry(sc, sc->head - 1)->id);
+ db_printf(" addr: 0x%lx\n",
+ ioat_get_ring_entry(sc, sc->head - 1)->hw_desc_bus_addr);
+ db_printf(" next: 0x%lx\n",
+ ioat_get_ring_entry(sc, sc->head - 1)->u.generic->next);
+
+ db_printf(" ring[%u] (head):\n", (sc->head) %
+ (1 << sc->ring_size_order));
+ db_printf(" id: %u\n", ioat_get_ring_entry(sc, sc->head)->id);
+ db_printf(" addr: 0x%lx\n",
+ ioat_get_ring_entry(sc, sc->head)->hw_desc_bus_addr);
+ db_printf(" next: 0x%lx\n",
+ ioat_get_ring_entry(sc, sc->head)->u.generic->next);
+
+ for (idx = 0; idx < (1 << sc->ring_size_order); idx++)
+ if ((*sc->comp_update & IOAT_CHANSTS_COMPLETED_DESCRIPTOR_MASK)
+ == ioat_get_ring_entry(sc, idx)->hw_desc_bus_addr)
+ db_printf(" ring[%u] == hardware tail\n", idx);
+
db_printf(" cleanup_lock: ");
db_show_lock(&sc->cleanup_lock);
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