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[src/trunk]: src/sys/dev/i2c Re-enable the intr / mask / softint / unmask dan...
details: https://anonhg.NetBSD.org/src/rev/441c4f7521bf
branches: trunk
changeset: 467004:441c4f7521bf
user: thorpej <thorpej%NetBSD.org@localhost>
date: Thu Jan 09 04:04:01 2020 +0000
description:
Re-enable the intr / mask / softint / unmask dance now that the x86
interrupt issue is fixed. Verified working by ryoon@ (thanks!).
diffstat:
sys/dev/i2c/ihidev.c | 171 +++++++++++++++++++++++++++++++++++++++-----------
sys/dev/i2c/ihidev.h | 4 +-
2 files changed, 136 insertions(+), 39 deletions(-)
diffs (281 lines):
diff -r 0a47a2aa96b3 -r 441c4f7521bf sys/dev/i2c/ihidev.c
--- a/sys/dev/i2c/ihidev.c Thu Jan 09 02:55:41 2020 +0000
+++ b/sys/dev/i2c/ihidev.c Thu Jan 09 04:04:01 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: ihidev.c,v 1.11 2019/12/25 01:19:56 thorpej Exp $ */
+/* $NetBSD: ihidev.c,v 1.12 2020/01/09 04:04:01 thorpej Exp $ */
/* $OpenBSD ihidev.c,v 1.13 2017/04/08 02:57:23 deraadt Exp $ */
/*-
@@ -54,7 +54,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ihidev.c,v 1.11 2019/12/25 01:19:56 thorpej Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ihidev.c,v 1.12 2020/01/09 04:04:01 thorpej Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -71,6 +71,7 @@
# include "acpica.h"
#endif
#if NACPICA > 0
+#include <dev/acpi/acpivar.h>
#include <dev/acpi/acpi_intr.h>
#endif
@@ -109,10 +110,14 @@
CFATTACH_DECL_NEW(ihidev, sizeof(struct ihidev_softc),
ihidev_match, ihidev_attach, ihidev_detach, NULL);
+static bool ihiddev_intr_init(struct ihidev_softc *);
+static void ihiddev_intr_fini(struct ihidev_softc *);
+
static bool ihidev_suspend(device_t, const pmf_qual_t *);
static bool ihidev_resume(device_t, const pmf_qual_t *);
static int ihidev_hid_command(struct ihidev_softc *, int, void *, bool);
static int ihidev_intr(void *);
+static void ihidev_softintr(void *);
static int ihidev_reset(struct ihidev_softc *, bool);
static int ihidev_hid_desc_parse(struct ihidev_softc *);
@@ -200,20 +205,9 @@
repsz));
}
sc->sc_ibuf = kmem_zalloc(sc->sc_isize, KM_SLEEP);
-#if NACPICA > 0
- {
- char buf[100];
-
- sc->sc_ih = acpi_intr_establish(self, sc->sc_phandle, IPL_TTY,
- false, ihidev_intr, sc, device_xname(self));
- if (sc->sc_ih == NULL) {
- aprint_error_dev(self, "can't establish interrupt\n");
- return;
- }
- aprint_normal_dev(self, "interrupting at %s\n",
- acpi_intr_string(sc->sc_ih, buf, sizeof(buf)));
+ if (! ihiddev_intr_init(sc)) {
+ return;
}
-#endif
iha.iaa = ia;
iha.parent = sc;
@@ -260,10 +254,7 @@
struct ihidev_softc *sc = device_private(self);
mutex_enter(&sc->sc_intr_lock);
-#if NACPICA > 0
- if (sc->sc_ih != NULL)
- acpi_intr_disestablish(sc->sc_ih);
-#endif
+ ihiddev_intr_fini(sc);
if (ihidev_hid_command(sc, I2C_HID_CMD_SET_POWER,
&I2C_HID_POWER_OFF, true))
aprint_error_dev(sc->sc_dev, "failed to power down\n");
@@ -649,31 +640,131 @@
return (0);
}
+static bool
+ihiddev_intr_init(struct ihidev_softc *sc)
+{
+#if NACPICA > 0
+ ACPI_HANDLE hdl = (void *)(uintptr_t)sc->sc_phandle;
+ struct acpi_resources res;
+ ACPI_STATUS rv;
+ char buf[100];
+
+ rv = acpi_resource_parse(sc->sc_dev, hdl, "_CRS", &res,
+ &acpi_resource_parse_ops_quiet);
+ if (ACPI_FAILURE(rv)) {
+ aprint_error_dev(sc->sc_dev, "can't parse '_CRS'\n");
+ return false;
+ }
+
+ const struct acpi_irq * const irq = acpi_res_irq(&res, 0);
+ if (irq == NULL) {
+ aprint_error_dev(sc->sc_dev, "no IRQ resource\n");
+ acpi_resource_cleanup(&res);
+ return false;
+ }
+
+ sc->sc_intr_type =
+ irq->ar_type == ACPI_EDGE_SENSITIVE ? IST_EDGE : IST_LEVEL;
+
+ acpi_resource_cleanup(&res);
+
+ sc->sc_ih = acpi_intr_establish(sc->sc_dev, sc->sc_phandle, IPL_TTY,
+ false, ihidev_intr, sc, device_xname(sc->sc_dev));
+ if (sc->sc_ih == NULL) {
+ aprint_error_dev(sc->sc_dev, "can't establish interrupt\n");
+ return false;
+ }
+ aprint_normal_dev(sc->sc_dev, "interrupting at %s\n",
+ acpi_intr_string(sc->sc_ih, buf, sizeof(buf)));
+
+ sc->sc_sih = softint_establish(SOFTINT_SERIAL, ihidev_softintr, sc);
+ if (sc->sc_sih == NULL) {
+ aprint_error_dev(sc->sc_dev,
+ "can't establish soft interrupt\n");
+ return false;
+ }
+
+ return true;
+#else
+ aprint_error_dev(sc->sc_dev, "can't establish interrupt\n");
+ return false;
+#endif
+}
+
+static void
+ihiddev_intr_fini(struct ihidev_softc *sc)
+{
+#if NACPICA > 0
+ if (sc->sc_ih != NULL) {
+ acpi_intr_disestablish(sc->sc_ih);
+ }
+ if (sc->sc_sih != NULL) {
+ softint_disestablish(sc->sc_sih);
+ }
+#endif
+}
+
+static void
+ihidev_intr_mask(struct ihidev_softc * const sc)
+{
+
+ if (sc->sc_intr_type == IST_LEVEL) {
+#if NACPICA > 0
+ acpi_intr_mask(sc->sc_ih);
+#endif
+ }
+}
+
+static void
+ihidev_intr_unmask(struct ihidev_softc * const sc)
+{
+
+ if (sc->sc_intr_type == IST_LEVEL) {
+#if NACPICA > 0
+ acpi_intr_unmask(sc->sc_ih);
+#endif
+ }
+}
+
static int
ihidev_intr(void *arg)
{
- struct ihidev_softc *sc = arg;
+ struct ihidev_softc * const sc = arg;
+
+ mutex_enter(&sc->sc_intr_lock);
+
+ /*
+ * Schedule our soft interrupt handler. If we're using a level-
+ * triggered interrupt, we have to mask it off while we wait
+ * for service.
+ */
+ softint_schedule(sc->sc_sih);
+ ihidev_intr_mask(sc);
+
+ mutex_exit(&sc->sc_intr_lock);
+
+ return 1;
+}
+
+static void
+ihidev_softintr(void *arg)
+{
+ struct ihidev_softc * const sc = arg;
struct ihidev *scd;
u_int psize;
int res, i;
u_char *p;
u_int rep = 0;
- /*
- * XXX: force I2C_F_POLL for now to avoid dwiic interrupting
- * while we are interrupting
- */
-
mutex_enter(&sc->sc_intr_lock);
- iic_acquire_bus(sc->sc_tag, I2C_F_POLL);
+ iic_acquire_bus(sc->sc_tag, 0);
+ res = iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP, sc->sc_addr, NULL, 0,
+ sc->sc_ibuf, sc->sc_isize, 0);
+ iic_release_bus(sc->sc_tag, 0);
+ mutex_exit(&sc->sc_intr_lock);
- res = iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP, sc->sc_addr, NULL, 0,
- sc->sc_ibuf, sc->sc_isize, I2C_F_POLL);
-
- iic_release_bus(sc->sc_tag, I2C_F_POLL);
- mutex_exit(&sc->sc_intr_lock);
if (res != 0)
- return 1;
+ goto out;
/*
* 6.1.1 - First two bytes are the packet length, which must be less
@@ -683,7 +774,7 @@
if (!psize || psize > sc->sc_isize) {
DPRINTF(("%s: %s: invalid packet size (%d vs. %d)\n",
sc->sc_dev.dv_xname, __func__, psize, sc->sc_isize));
- return (1);
+ goto out;
}
/* 3rd byte is the report id */
@@ -695,22 +786,26 @@
if (rep >= sc->sc_nrepid) {
aprint_error_dev(sc->sc_dev, "%s: bad report id %d\n",
__func__, rep);
- return (1);
+ goto out;
}
- DPRINTF(("%s: ihidev_intr: hid input (rep %d):", sc->sc_dev.dv_xname,
- rep));
+ DPRINTF(("%s: %s: hid input (rep %d):", sc->sc_dev.dv_xname,
+ __func__, rep));
for (i = 0; i < sc->sc_isize; i++)
DPRINTF((" %.2x", sc->sc_ibuf[i]));
DPRINTF(("\n"));
scd = sc->sc_subdevs[rep];
if (scd == NULL || !(scd->sc_state & IHIDEV_OPEN))
- return (1);
+ goto out;
scd->sc_intr(scd, p, psize);
- return 1;
+ out:
+ /*
+ * If our interrupt is level-triggered, re-enable it now.
+ */
+ ihidev_intr_unmask(sc);
}
static int
diff -r 0a47a2aa96b3 -r 441c4f7521bf sys/dev/i2c/ihidev.h
--- a/sys/dev/i2c/ihidev.h Thu Jan 09 02:55:41 2020 +0000
+++ b/sys/dev/i2c/ihidev.h Thu Jan 09 04:04:01 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: ihidev.h,v 1.3 2019/12/25 01:19:56 thorpej Exp $ */
+/* $NetBSD: ihidev.h,v 1.4 2020/01/09 04:04:01 thorpej Exp $ */
/* $OpenBSD ihidev.h,v 1.4 2016/01/31 18:24:35 jcs Exp $ */
/*-
@@ -100,7 +100,9 @@
uint64_t sc_phandle;
void * sc_ih;
+ void * sc_sih;
kmutex_t sc_intr_lock;
+ int sc_intr_type;
u_int sc_hid_desc_addr;
union {
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