/* * Copyright 2002 by Peter Grehan. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD$ */ /* * Driver for KeyLargo/Pangea, the MacPPC south bridge ASIC. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static MALLOC_DEFINE(M_MACIO, "macio", "macio device information"); static int macio_probe(device_t); static int macio_attach(device_t); static int macio_print_child(device_t dev, device_t child); static void macio_probe_nomatch(device_t, device_t); static int macio_read_ivar(device_t, device_t, int, uintptr_t *); static int macio_write_ivar(device_t, device_t, int, uintptr_t); static struct resource *macio_alloc_resource(device_t, device_t, int, int *, u_long, u_long, u_long, u_int); static int macio_activate_resource(device_t, device_t, int, int, struct resource *); static int macio_deactivate_resource(device_t, device_t, int, int, struct resource *); static int macio_release_resource(device_t, device_t, int, int, struct resource *); static struct resource_list *macio_get_resource_list (device_t, device_t); /* * Bus interface definition */ static device_method_t macio_methods[] = { /* Device interface */ DEVMETHOD(device_probe, macio_probe), DEVMETHOD(device_attach, macio_attach), DEVMETHOD(device_detach, bus_generic_detach), DEVMETHOD(device_shutdown, bus_generic_shutdown), DEVMETHOD(device_suspend, bus_generic_suspend), DEVMETHOD(device_resume, bus_generic_resume), /* Bus interface */ DEVMETHOD(bus_print_child, macio_print_child), DEVMETHOD(bus_probe_nomatch, macio_probe_nomatch), DEVMETHOD(bus_read_ivar, macio_read_ivar), DEVMETHOD(bus_write_ivar, macio_write_ivar), DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), DEVMETHOD(bus_alloc_resource, macio_alloc_resource), DEVMETHOD(bus_release_resource, macio_release_resource), DEVMETHOD(bus_activate_resource, macio_activate_resource), DEVMETHOD(bus_deactivate_resource, macio_deactivate_resource), DEVMETHOD(bus_get_resource_list, macio_get_resource_list), { 0, 0 } }; static driver_t macio_pci_driver = { "macio", macio_methods, sizeof(struct macio_softc) }; devclass_t macio_devclass; DRIVER_MODULE(macio, pci, macio_pci_driver, macio_devclass, 0, 0); /* * PCI ID search table */ static struct macio_pci_dev { u_int32_t mpd_devid; char *mpd_desc; } macio_pci_devlist[] = { { 0x0025106b, "Pangea I/O Controller" }, { 0x0022106b, "KeyLargo I/O Controller" }, { 0, NULL } }; /* * Devices to exclude from the probe * XXX some of these may be required in the future... */ #define MACIO_QUIRK_IGNORE 0x00000001 #define MACIO_QUIRK_CHILD_HAS_INTR 0x00000002 struct macio_quirk_entry { const char *mq_name; int mq_quirks; }; static struct macio_quirk_entry macio_quirks[] = { { "interrupt-controller", MACIO_QUIRK_IGNORE }, { "escc-legacy", MACIO_QUIRK_IGNORE }, { "timer", MACIO_QUIRK_IGNORE }, { "escc", MACIO_QUIRK_CHILD_HAS_INTR }, { NULL, 0 } }; static int macio_get_quirks(const char *name) { struct macio_quirk_entry *mqe; for (mqe = macio_quirks; mqe->mq_name != NULL; mqe++) if (strcmp(name, mqe->mq_name) == 0) return (mqe->mq_quirks); return (0); } /* * Add an interrupt to the dev's resource list if present */ static void macio_add_intr(phandle_t devnode, struct macio_devinfo *dinfo) { int intr; if (dinfo->mdi_ninterrupts >= 5) { printf("macio: device has more than 5 interrupts\n"); return; } if (OF_getprop(devnode, "interrupts", &intr, sizeof(intr)) == -1) { if (OF_getprop(devnode, "AAPL,interrupts", &intr, sizeof(intr)) == -1) return; } if (intr == -1) return; resource_list_add(&dinfo->mdi_resources, SYS_RES_IRQ, dinfo->mdi_ninterrupts, intr, intr, 1); dinfo->mdi_interrupts[dinfo->mdi_ninterrupts] = intr; dinfo->mdi_ninterrupts++; } static void macio_add_reg(phandle_t devnode, struct macio_devinfo *dinfo) { struct macio_reg *reg; int i, nreg; nreg = OF_getprop_alloc(devnode, "reg", sizeof(*reg), (void **)®); if (nreg == -1) return; dinfo->mdi_nregs = nreg; dinfo->mdi_regs = reg; for (i = 0; i < nreg; i++) { resource_list_add(&dinfo->mdi_resources, SYS_RES_MEMORY, i, reg[i].mr_base, reg[i].mr_base + reg[i].mr_size, reg[i].mr_size); } } /* * PCI probe */ static int macio_probe(device_t dev) { int i; u_int32_t devid; devid = pci_get_devid(dev); for (i = 0; macio_pci_devlist[i].mpd_desc != NULL; i++) { if (devid == macio_pci_devlist[i].mpd_devid) { device_set_desc(dev, macio_pci_devlist[i].mpd_desc); return (0); } } return (ENXIO); } /* * PCI attach: scan OpenFirmware child nodes, and attach these as children * of the macio bus */ static int macio_attach(device_t dev) { struct macio_softc *sc; struct macio_devinfo *dinfo; phandle_t root; phandle_t child; phandle_t subchild; device_t cdev; u_int reg[3]; char *name, *type; int quirks; sc = device_get_softc(dev); root = sc->sc_node = OF_finddevice("mac-io"); /* * Locate the device node and it's base address */ if (OF_getprop(root, "assigned-addresses", reg, sizeof(reg)) < sizeof(reg)) { return (ENXIO); } sc->sc_base = reg[2]; sc->sc_size = MACIO_REG_SIZE; sc->sc_mem_rman.rm_type = RMAN_ARRAY; sc->sc_mem_rman.rm_descr = "MacIO Device Memory"; if (rman_init(&sc->sc_mem_rman) != 0) { device_printf(dev, "failed to init mem range resources\n"); return (ENXIO); } rman_manage_region(&sc->sc_mem_rman, 0, sc->sc_size); /* * Iterate through the sub-devices */ for (child = OF_child(root); child != 0; child = OF_peer(child)) { OF_getprop_alloc(child, "name", 1, (void **)&name); OF_getprop_alloc(child, "device_type", 1, (void **)&type); quirks = macio_get_quirks(name); if ((quirks & MACIO_QUIRK_IGNORE) != 0) { free(name, M_OFWPROP); free(type, M_OFWPROP); continue; } cdev = device_add_child(dev, NULL, -1); if (cdev != NULL) { dinfo = malloc(sizeof(*dinfo), M_MACIO, 0); memset(dinfo, 0, sizeof(*dinfo)); resource_list_init(&dinfo->mdi_resources); dinfo->mdi_node = child; dinfo->mdi_name = name; dinfo->mdi_device_type = type; dinfo->mdi_ninterrupts = 0; macio_add_intr(child, dinfo); macio_add_reg(child, dinfo); if ((quirks & MACIO_QUIRK_CHILD_HAS_INTR) != 0) { for (subchild = OF_child(child); subchild != 0; subchild = OF_peer(subchild)) { macio_add_intr(subchild, dinfo); } } device_set_ivars(cdev, dinfo); } else { free(name, M_OFWPROP); free(type, M_OFWPROP); } } return (bus_generic_attach(dev)); } static int macio_print_child(device_t dev, device_t child) { struct macio_devinfo *dinfo; struct resource_list *rl; int retval = 0; dinfo = device_get_ivars(child); rl = &dinfo->mdi_resources; retval += bus_print_child_header(dev, child); retval += resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx"); retval += resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld"); retval += bus_print_child_footer(dev, child); return (retval); } static void macio_probe_nomatch(device_t dev, device_t child) { struct macio_devinfo *dinfo; struct resource_list *rl; if (bootverbose) { dinfo = device_get_ivars(child); rl = &dinfo->mdi_resources; device_printf(dev, "<%s, %s>", macio_get_devtype(child), macio_get_name(child)); resource_list_print_type(rl, "mem", SYS_RES_MEMORY, "%#lx"); resource_list_print_type(rl, "irq", SYS_RES_IRQ, "%ld"); printf(" (no driver attached)\n"); } } static int macio_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) { struct macio_devinfo *dinfo; if ((dinfo = device_get_ivars(child)) == 0) return (ENOENT); switch (which) { case MACIO_IVAR_NODE: *result = dinfo->mdi_node; break; case MACIO_IVAR_NAME: *result = (uintptr_t)dinfo->mdi_name; break; case MACIO_IVAR_DEVTYPE: *result = (uintptr_t)dinfo->mdi_device_type; break; case MACIO_IVAR_NREGS: *result = dinfo->mdi_nregs; break; case MACIO_IVAR_REGS: *result = (uintptr_t)dinfo->mdi_regs; break; default: return (ENOENT); } return (0); } static int macio_write_ivar(device_t dev, device_t child, int which, uintptr_t value) { return (EINVAL); } static struct resource * macio_alloc_resource(device_t bus, device_t child, int type, int *rid, u_long start, u_long end, u_long count, u_int flags) { struct macio_softc *sc; int needactivate; struct resource *rv; struct rman *rm; bus_space_tag_t tagval; u_long adjstart, adjend, adjcount; struct macio_devinfo *dinfo; struct resource_list_entry *rle; sc = device_get_softc(bus); dinfo = device_get_ivars(child); needactivate = flags & RF_ACTIVE; flags &= ~RF_ACTIVE; switch (type) { case SYS_RES_MEMORY: case SYS_RES_IOPORT: rle = resource_list_find(&dinfo->mdi_resources, SYS_RES_MEMORY, *rid); if (rle == NULL) { device_printf(bus, "no rle for %s memory %d\n", device_get_nameunit(child), *rid); return (NULL); } if (start < rle->start) adjstart = rle->start; else if (start > rle->end) adjstart = rle->end; else adjstart = start; if (end < rle->start) adjend = rle->start; else if (end > rle->end) adjend = rle->end; else adjend = end; adjcount = adjend - adjstart; rm = &sc->sc_mem_rman; tagval = PPC_BUS_SPACE_MEM; if (flags & PPC_BUS_SPARSE4) tagval |= 4; break; case SYS_RES_IRQ: rle = resource_list_find(&dinfo->mdi_resources, SYS_RES_IRQ, *rid); if (rle == NULL) { if (dinfo->mdi_ninterrupts >= 5) { device_printf(bus, "%s has more than 5 interrupts\n", device_get_nameunit(child)); return (NULL); } resource_list_add(&dinfo->mdi_resources, SYS_RES_IRQ, dinfo->mdi_ninterrupts, start, start, 1); dinfo->mdi_interrupts[dinfo->mdi_ninterrupts] = start; dinfo->mdi_ninterrupts++; } return (resource_list_alloc(&dinfo->mdi_resources, bus, child, type, rid, start, end, count, flags)); break; default: device_printf(bus, "unknown resource request from %s\n", device_get_nameunit(child)); return (NULL); } rv = rman_reserve_resource(rm, adjstart, adjend, adjcount, flags, child); if (rv == NULL) { device_printf(bus, "failed to reserve resource %#lx - %#lx (%#lx) for %s\n", adjstart, adjend, adjcount, device_get_nameunit(child)); return (NULL); } rman_set_bustag(rv, tagval); rman_set_bushandle(rv, rman_get_start(rv)); if (needactivate) { if (bus_activate_resource(child, type, *rid, rv) != 0) { device_printf(bus, "failed to activate resource for %s\n", device_get_nameunit(child)); rman_release_resource(rv); return (NULL); } } return (rv); } static int macio_release_resource(device_t bus, device_t child, int type, int rid, struct resource *res) { if (rman_get_flags(res) & RF_ACTIVE) { int error = bus_deactivate_resource(child, type, rid, res); if (error) return error; } return (rman_release_resource(res)); } static int macio_activate_resource(device_t bus, device_t child, int type, int rid, struct resource *res) { struct macio_softc *sc; void *p; sc = device_get_softc(bus); if (type == SYS_RES_IRQ) return (bus_activate_resource(bus, type, rid, res)); if ((type == SYS_RES_MEMORY) || (type == SYS_RES_IOPORT)) { p = pmap_mapdev((vm_offset_t)rman_get_start(res) + sc->sc_base, (vm_size_t)rman_get_size(res)); if (p == NULL) return (ENOMEM); rman_set_virtual(res, p); rman_set_bushandle(res, (u_long)p); } return (rman_activate_resource(res)); } static int macio_deactivate_resource(device_t bus, device_t child, int type, int rid, struct resource *res) { /* * If this is a memory resource, unmap it. */ if ((type == SYS_RES_MEMORY) || (type == SYS_RES_IOPORT)) { u_int32_t psize; psize = rman_get_size(res); pmap_unmapdev((vm_offset_t)rman_get_virtual(res), psize); } return (rman_deactivate_resource(res)); } static struct resource_list * macio_get_resource_list (device_t dev, device_t child) { struct macio_devinfo *dinfo = device_get_ivars(child); struct resource_list *rl = &dinfo->mdi_resources; if (!rl) return (NULL); return (rl); }