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[src/trunk]: src/sys/dev/i2c Revert previous until issues can be sorted out.



details:   https://anonhg.NetBSD.org/src/rev/a7ae8e1c0896
branches:  trunk
changeset: 967870:a7ae8e1c0896
user:      thorpej <thorpej%NetBSD.org@localhost>
date:      Wed Dec 25 01:19:56 2019 +0000

description:
Revert previous until issues can be sorted out.

diffstat:

 sys/dev/i2c/ihidev.c |  156 ++++++++++++--------------------------------------
 sys/dev/i2c/ihidev.h |    4 +-
 2 files changed, 40 insertions(+), 120 deletions(-)

diffs (265 lines):

diff -r 63d837fe580b -r a7ae8e1c0896 sys/dev/i2c/ihidev.c
--- a/sys/dev/i2c/ihidev.c      Wed Dec 25 00:44:45 2019 +0000
+++ b/sys/dev/i2c/ihidev.c      Wed Dec 25 01:19:56 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: ihidev.c,v 1.10 2019/12/22 16:44:35 thorpej Exp $ */
+/* $NetBSD: ihidev.c,v 1.11 2019/12/25 01:19:56 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 1.10 2019/12/22 16:44:35 thorpej Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ihidev.c,v 1.11 2019/12/25 01:19:56 thorpej Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -71,7 +71,6 @@
 #  include "acpica.h"
 #endif
 #if NACPICA > 0
-#include <dev/acpi/acpivar.h>
 #include <dev/acpi/acpi_intr.h>
 #endif
 
@@ -110,14 +109,10 @@
 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 *);
 
@@ -205,9 +200,20 @@
                    repsz));
        }
        sc->sc_ibuf = kmem_zalloc(sc->sc_isize, KM_SLEEP);
-       if (! ihiddev_intr_init(sc)) {
-               return;
+#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)));
        }
+#endif
 
        iha.iaa = ia;
        iha.parent = sc;
@@ -254,7 +260,10 @@
        struct ihidev_softc *sc = device_private(self);
 
        mutex_enter(&sc->sc_intr_lock);
-       ihiddev_intr_fini(sc);
+#if NACPICA > 0
+       if (sc->sc_ih != NULL)
+               acpi_intr_disestablish(sc->sc_ih);
+#endif
        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");
@@ -640,110 +649,31 @@
        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 int
 ihidev_intr(void *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);
-       if (sc->sc_intr_type == IST_LEVEL) {
-#if NACPICA > 0
-               acpi_intr_mask(sc->sc_ih);
-#endif
-       }
-
-       mutex_exit(&sc->sc_intr_lock);
-
-       return 1;
-}
-
-static void
-ihidev_softintr(void *arg)
-{
-       struct ihidev_softc * const sc = arg;
+       struct ihidev_softc *sc = arg;
        struct ihidev *scd;
        u_int psize;
        int res, i;
        u_char *p;
        u_int rep = 0;
 
-       iic_acquire_bus(sc->sc_tag, 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);
+
        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);
+           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)
-               goto out;
+               return 1;
 
        /*
         * 6.1.1 - First two bytes are the packet length, which must be less
@@ -753,7 +683,7 @@
        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));
-               goto out;
+               return (1);
        }
 
        /* 3rd byte is the report id */
@@ -765,30 +695,22 @@
        if (rep >= sc->sc_nrepid) {
                aprint_error_dev(sc->sc_dev, "%s: bad report id %d\n",
                    __func__, rep);
-               goto out;
+               return (1);
        }
 
-       DPRINTF(("%s: %s: hid input (rep %d):", sc->sc_dev.dv_xname,
-           __func__, rep));
+       DPRINTF(("%s: ihidev_intr: hid input (rep %d):", sc->sc_dev.dv_xname,
+           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))
-               goto out;
+               return (1);
 
        scd->sc_intr(scd, p, psize);
 
- out:
-       /*
-        * If our interrupt is level-triggered, re-enable it now.
-        */
-       if (sc->sc_intr_type == IST_LEVEL) {
-#if NACPICA > 0
-               acpi_intr_unmask(sc->sc_ih);
-#endif
-       }
+       return 1;
 }
 
 static int
diff -r 63d837fe580b -r a7ae8e1c0896 sys/dev/i2c/ihidev.h
--- a/sys/dev/i2c/ihidev.h      Wed Dec 25 00:44:45 2019 +0000
+++ b/sys/dev/i2c/ihidev.h      Wed Dec 25 01:19:56 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: ihidev.h,v 1.2 2019/12/22 16:44:35 thorpej Exp $ */
+/* $NetBSD: ihidev.h,v 1.3 2019/12/25 01:19:56 thorpej Exp $ */
 /* $OpenBSD ihidev.h,v 1.4 2016/01/31 18:24:35 jcs Exp $ */
 
 /*-
@@ -100,9 +100,7 @@
        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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