Date: Mon, 11 Jul 2016 23:01:58 +0000 (UTC) From: Nathan Whitehorn <nwhitehorn@FreeBSD.org> To: src-committers@freebsd.org, svn-src-projects@freebsd.org Subject: svn commit: r302598 - projects/powernv/powerpc/powernv Message-ID: <201607112301.u6BN1wYD018493@repo.freebsd.org>
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Author: nwhitehorn Date: Mon Jul 11 23:01:58 2016 New Revision: 302598 URL: https://svnweb.freebsd.org/changeset/base/302598 Log: Forward interrupts on OPAL-owned devices to OPAL. Modified: projects/powernv/powerpc/powernv/opal_dev.c Modified: projects/powernv/powerpc/powernv/opal_dev.c ============================================================================== --- projects/powernv/powerpc/powernv/opal_dev.c Mon Jul 11 22:53:22 2016 (r302597) +++ projects/powernv/powerpc/powernv/opal_dev.c Mon Jul 11 23:01:58 2016 (r302598) @@ -59,6 +59,7 @@ static const struct ofw_bus_devinfo *opa device_t child); static void opal_shutdown(void *arg, int howto); +static void opal_intr(void *); static device_method_t opaldev_methods[] = { /* Device interface */ @@ -93,6 +94,8 @@ DRIVER_MODULE(opaldev, ofwbus, opaldev_d static int opaldev_probe(device_t dev) { + pcell_t *irqs; + int i, n_irqs; if (!ofw_bus_is_compatible(dev, "ibm,opal-v3")) return (ENXIO); @@ -100,6 +103,20 @@ opaldev_probe(device_t dev) return (ENXIO); device_set_desc(dev, "OPAL Abstraction Firmware"); + + /* Manually add IRQs before attaching */ + if (OF_hasprop(ofw_bus_get_node(dev), "opal-interrupts")) { + n_irqs = OF_getproplen(ofw_bus_get_node(dev), + "opal-interrupts") / sizeof(*irqs); + irqs = malloc(n_irqs * sizeof(*irqs), M_DEVBUF, M_WAITOK); + OF_getencprop(ofw_bus_get_node(dev), "opal-interrupts", irqs, + n_irqs * sizeof(*irqs)); + for (i = 0; i < n_irqs; i++) + bus_set_resource(dev, SYS_RES_IRQ, i, irqs[i], 1); + free(irqs, M_DEVBUF); + } + + return (BUS_PROBE_SPECIFIC); } @@ -109,8 +126,9 @@ opaldev_attach(device_t dev) phandle_t child; device_t cdev; uint64_t junk; - int rv; + int i, rv; struct ofw_bus_devinfo *dinfo; + struct resource *irq; /* Test for RTC support and register clock if it works */ rv = opal_call(OPAL_RTC_READ, vtophys(&junk), vtophys(&junk)); @@ -126,6 +144,13 @@ opaldev_attach(device_t dev) EVENTHANDLER_REGISTER(shutdown_final, opal_shutdown, NULL, SHUTDOWN_PRI_LAST); + /* Bind to interrupts */ + for (i = 0; (irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &i, + RF_ACTIVE)) != NULL; i++) + bus_setup_intr(dev, irq, INTR_TYPE_TTY | INTR_MPSAFE | + INTR_ENTROPY, NULL, opal_intr, (void *)rman_get_start(irq), + NULL); + for (child = OF_child(ofw_bus_get_node(dev)); child != 0; child = OF_peer(child)) { dinfo = malloc(sizeof(*dinfo), M_DEVBUF, M_WAITOK | M_ZERO); @@ -217,3 +242,14 @@ opal_shutdown(void *arg, int howto) opal_call(OPAL_CEC_REBOOT); } +static void +opal_intr(void *xintr) +{ + uint64_t events = 0; + + opal_call(OPAL_HANDLE_INTERRUPT, (uint32_t)(uint64_t)xintr, + vtophys(&events)); + /* XXX: do something useful with this information */ + +} +
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