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cxgbe(4): Count and clear interrupts generated at the software's request.

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An interrupt can be requested by setting the F_SWINT bit in PL_PF_CTL.

MFC after:	1 week
Sponsored by:	Chelsio Communications
This commit is contained in:
Navdeep Parhar 2019-03-28 21:22:28 +00:00
parent 841613dcdc
commit dd3b96ecec
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=345660
3 changed files with 12 additions and 0 deletions
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2
sys/dev/cxgbe/adapter.h
View File

@ -895,6 +895,8 @@ struct adapter {
const char *last_op;
const void *last_op_thr;
int last_op_flags;
int swintr;
};
#define ADAPTER_LOCK(sc) mtx_lock(&(sc)->sc_lock)

3
sys/dev/cxgbe/t4_main.c
View File

@ -6031,6 +6031,9 @@ t4_sysctls(struct adapter *sc)
CTLTYPE_STRING | CTLFLAG_RD, sc, INTR_CPUS,
sysctl_cpus, "A", "preferred CPUs for interrupts");
SYSCTL_ADD_INT(ctx, children, OID_AUTO, "swintr", CTLFLAG_RW,
&sc->swintr, 0, "software triggered interrupts");
/*
* dev.t4nex.X.misc. Marked CTLFLAG_SKIP to avoid information overload.
*/

7
sys/dev/cxgbe/t4_sge.c
View File

@ -1394,11 +1394,18 @@ void
t4_intr_err(void *arg)
{
struct adapter *sc = arg;
uint32_t v;
const bool verbose = (sc->debug_flags & DF_VERBOSE_SLOWINTR) != 0;
if (sc->flags & ADAP_ERR)
return;
v = t4_read_reg(sc, MYPF_REG(A_PL_PF_INT_CAUSE));
if (v & F_PFSW) {
sc->swintr++;
t4_write_reg(sc, MYPF_REG(A_PL_PF_INT_CAUSE), v);
}
t4_slow_intr_handler(sc, verbose);
}