diff --git a/sys/arm/arm/nexus.c b/sys/arm/arm/nexus.c index 3991ec91ed0d..c6c511b85fe3 100644 --- a/sys/arm/arm/nexus.c +++ b/sys/arm/arm/nexus.c @@ -1,467 +1,470 @@ /*- * Copyright 1998 Massachusetts Institute of Technology * * Permission to use, copy, modify, and distribute this software and * its documentation for any purpose and without fee is hereby * granted, provided that both the above copyright notice and this * permission notice appear in all copies, that both the above * copyright notice and this permission notice appear in all * supporting documentation, and that the name of M.I.T. not be used * in advertising or publicity pertaining to distribution of the * software without specific, written prior permission. M.I.T. makes * no representations about the suitability of this software for any * purpose. It is provided "as is" without express or implied * warranty. * * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT * SHALL M.I.T. 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. * */ /* * This code implements a `root nexus' for Arm Architecture * machines. The function of the root nexus is to serve as an * attachment point for both processors and buses, and to manage * resources which are common to all of them. In particular, * this code implements the core resource managers for interrupt * requests and I/O memory address space. */ #include "opt_platform.h" #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef FDT #include #include #include "ofw_bus_if.h" #endif static MALLOC_DEFINE(M_NEXUSDEV, "nexusdev", "Nexus device"); struct nexus_device { struct resource_list nx_resources; }; #define DEVTONX(dev) ((struct nexus_device *)device_get_ivars(dev)) static struct rman mem_rman; static struct rman irq_rman; static int nexus_probe(device_t); static int nexus_attach(device_t); static int nexus_print_child(device_t, device_t); static device_t nexus_add_child(device_t, u_int, const char *, int); static struct resource *nexus_alloc_resource(device_t, device_t, int, int *, rman_res_t, rman_res_t, rman_res_t, u_int); static int nexus_activate_resource(device_t, device_t, int, int, struct resource *); static int nexus_adjust_resource(device_t, device_t, int, struct resource *, rman_res_t, rman_res_t); static bus_space_tag_t nexus_get_bus_tag(device_t, device_t); static bus_dma_tag_t nexus_get_dma_tag(device_t dev, device_t child); #ifdef SMP static int nexus_bind_intr(device_t, device_t, struct resource *, int); #endif static int nexus_config_intr(device_t dev, int irq, enum intr_trigger trig, enum intr_polarity pol); static int nexus_describe_intr(device_t dev, device_t child, struct resource *irq, void *cookie, const char *descr); static int nexus_deactivate_resource(device_t, device_t, int, int, struct resource *); static int nexus_release_resource(device_t, device_t, int, int, struct resource *); static int nexus_setup_intr(device_t dev, device_t child, struct resource *res, int flags, driver_filter_t *filt, driver_intr_t *intr, void *arg, void **cookiep); static int nexus_teardown_intr(device_t, device_t, struct resource *, void *); #ifdef FDT static int nexus_ofw_map_intr(device_t dev, device_t child, phandle_t iparent, int icells, pcell_t *intr); #endif /* * Normally NULL (which results in defaults which are handled in * busdma_machdep), platform init code can use nexus_set_dma_tag() to set this * to a tag that will be inherited by all busses and devices on the platform. */ static bus_dma_tag_t nexus_dma_tag; static device_method_t nexus_methods[] = { /* Device interface */ DEVMETHOD(device_probe, nexus_probe), DEVMETHOD(device_attach, nexus_attach), /* Bus interface */ DEVMETHOD(bus_print_child, nexus_print_child), DEVMETHOD(bus_add_child, nexus_add_child), DEVMETHOD(bus_alloc_resource, nexus_alloc_resource), DEVMETHOD(bus_activate_resource, nexus_activate_resource), DEVMETHOD(bus_adjust_resource, nexus_adjust_resource), DEVMETHOD(bus_config_intr, nexus_config_intr), DEVMETHOD(bus_deactivate_resource, nexus_deactivate_resource), DEVMETHOD(bus_release_resource, nexus_release_resource), DEVMETHOD(bus_setup_intr, nexus_setup_intr), DEVMETHOD(bus_teardown_intr, nexus_teardown_intr), DEVMETHOD(bus_get_bus_tag, nexus_get_bus_tag), DEVMETHOD(bus_get_dma_tag, nexus_get_dma_tag), DEVMETHOD(bus_describe_intr, nexus_describe_intr), #ifdef SMP DEVMETHOD(bus_bind_intr, nexus_bind_intr), #endif #ifdef FDT DEVMETHOD(ofw_bus_map_intr, nexus_ofw_map_intr), #endif { 0, 0 } }; static devclass_t nexus_devclass; static driver_t nexus_driver = { "nexus", nexus_methods, 1 /* no softc */ }; EARLY_DRIVER_MODULE(nexus, root, nexus_driver, nexus_devclass, 0, 0, BUS_PASS_BUS + BUS_PASS_ORDER_EARLY); static int nexus_probe(device_t dev) { device_quiet(dev); /* suppress attach message for neatness */ return (BUS_PROBE_DEFAULT); } static int nexus_attach(device_t dev) { mem_rman.rm_start = 0; mem_rman.rm_end = BUS_SPACE_MAXADDR; mem_rman.rm_type = RMAN_ARRAY; mem_rman.rm_descr = "I/O memory addresses"; if (rman_init(&mem_rman) || rman_manage_region(&mem_rman, 0, BUS_SPACE_MAXADDR)) panic("nexus_probe mem_rman"); irq_rman.rm_start = 0; irq_rman.rm_end = ~0; irq_rman.rm_type = RMAN_ARRAY; irq_rman.rm_descr = "Interrupts"; if (rman_init(&irq_rman) || rman_manage_region(&irq_rman, 0, ~0)) panic("nexus_attach irq_rman"); + /* First, add ofwbus0. */ + device_add_child(dev, "ofwbus", 0); + /* - * First, deal with the children we know about already + * Next, deal with the children we know about already. */ bus_generic_probe(dev); bus_generic_attach(dev); return (0); } static int nexus_print_child(device_t bus, device_t child) { int retval = 0; retval += bus_print_child_header(bus, child); retval += printf("\n"); return (retval); } static device_t nexus_add_child(device_t bus, u_int order, const char *name, int unit) { device_t child; struct nexus_device *ndev; ndev = malloc(sizeof(struct nexus_device), M_NEXUSDEV, M_NOWAIT|M_ZERO); if (!ndev) return (0); resource_list_init(&ndev->nx_resources); child = device_add_child_ordered(bus, order, name, unit); /* should we free this in nexus_child_detached? */ device_set_ivars(child, ndev); return (child); } /* * Allocate a resource on behalf of child. NB: child is usually going to be a * child of one of our descendants, not a direct child of nexus0. * (Exceptions include footbridge.) */ static struct resource * nexus_alloc_resource(device_t bus, device_t child, int type, int *rid, rman_res_t start, rman_res_t end, rman_res_t count, u_int flags) { struct resource *rv; struct rman *rm; int needactivate = flags & RF_ACTIVE; flags &= ~RF_ACTIVE; switch (type) { case SYS_RES_IRQ: rm = &irq_rman; break; case SYS_RES_MEMORY: case SYS_RES_IOPORT: rm = &mem_rman; break; default: return (NULL); } rv = rman_reserve_resource(rm, start, end, count, flags, child); if (rv == NULL) return (NULL); rman_set_rid(rv, *rid); if (needactivate) { if (bus_activate_resource(child, type, *rid, rv)) { rman_release_resource(rv); return (0); } } return (rv); } static int nexus_adjust_resource(device_t bus __unused, device_t child __unused, int type, struct resource *r, rman_res_t start, rman_res_t end) { struct rman *rm; switch (type) { case SYS_RES_IRQ: rm = &irq_rman; break; case SYS_RES_MEMORY: rm = &mem_rman; break; default: return (EINVAL); } if (rman_is_region_manager(r, rm) == 0) return (EINVAL); return (rman_adjust_resource(r, start, end)); } static int nexus_release_resource(device_t bus, device_t child, int type, int rid, struct resource *res) { int error; if (rman_get_flags(res) & RF_ACTIVE) { error = bus_deactivate_resource(child, type, rid, res); if (error) return (error); } return (rman_release_resource(res)); } static bus_space_tag_t nexus_get_bus_tag(device_t bus __unused, device_t child __unused) { #ifdef FDT return(fdtbus_bs_tag); #else return((void *)1); #endif } static bus_dma_tag_t nexus_get_dma_tag(device_t dev, device_t child) { return nexus_dma_tag; } void nexus_set_dma_tag(bus_dma_tag_t tag) { nexus_dma_tag = tag; } static int nexus_config_intr(device_t dev, int irq, enum intr_trigger trig, enum intr_polarity pol) { int ret = ENODEV; device_printf(dev, "bus_config_intr is obsolete and not supported!\n"); ret = EOPNOTSUPP; return (ret); } static int nexus_setup_intr(device_t dev, device_t child, struct resource *res, int flags, driver_filter_t *filt, driver_intr_t *intr, void *arg, void **cookiep) { if ((rman_get_flags(res) & RF_SHAREABLE) == 0) flags |= INTR_EXCL; return(intr_setup_irq(child, res, filt, intr, arg, flags, cookiep)); } static int nexus_teardown_intr(device_t dev, device_t child, struct resource *r, void *ih) { return (intr_teardown_irq(child, r, ih)); } static int nexus_describe_intr(device_t dev, device_t child, struct resource *irq, void *cookie, const char *descr) { return (intr_describe_irq(child, irq, cookie, descr)); } #ifdef SMP static int nexus_bind_intr(device_t dev, device_t child, struct resource *irq, int cpu) { return (intr_bind_irq(child, irq, cpu)); } #endif static int nexus_activate_resource(device_t bus, device_t child, int type, int rid, struct resource *r) { int err; bus_addr_t paddr; bus_size_t psize; bus_space_handle_t vaddr; if ((err = rman_activate_resource(r)) != 0) return (err); /* * If this is a memory resource, map it into the kernel. */ if (type == SYS_RES_MEMORY || type == SYS_RES_IOPORT) { paddr = (bus_addr_t)rman_get_start(r); psize = (bus_size_t)rman_get_size(r); #ifdef FDT err = bus_space_map(fdtbus_bs_tag, paddr, psize, 0, &vaddr); if (err != 0) { rman_deactivate_resource(r); return (err); } rman_set_bustag(r, fdtbus_bs_tag); #else vaddr = (bus_space_handle_t)pmap_mapdev((vm_offset_t)paddr, (vm_size_t)psize); if (vaddr == 0) { rman_deactivate_resource(r); return (ENOMEM); } rman_set_bustag(r, (void *)1); #endif rman_set_virtual(r, (void *)vaddr); rman_set_bushandle(r, vaddr); return (0); } else if (type == SYS_RES_IRQ) { err = intr_activate_irq(child, r); if (err != 0) { rman_deactivate_resource(r); return (err); } } return (0); } static int nexus_deactivate_resource(device_t bus, device_t child, int type, int rid, struct resource *r) { bus_size_t psize; bus_space_handle_t vaddr; if (type == SYS_RES_MEMORY || type == SYS_RES_IOPORT) { psize = (bus_size_t)rman_get_size(r); vaddr = rman_get_bushandle(r); if (vaddr != 0) { #ifdef FDT bus_space_unmap(fdtbus_bs_tag, vaddr, psize); #else pmap_unmapdev((vm_offset_t)vaddr, (vm_size_t)psize); #endif rman_set_virtual(r, NULL); rman_set_bushandle(r, 0); } } else if (type == SYS_RES_IRQ) { intr_deactivate_irq(child, r); } return (rman_deactivate_resource(r)); } #ifdef FDT static int nexus_ofw_map_intr(device_t dev, device_t child, phandle_t iparent, int icells, pcell_t *intr) { u_int irq; struct intr_map_data_fdt *fdt_data; size_t len; len = sizeof(*fdt_data) + icells * sizeof(pcell_t); fdt_data = (struct intr_map_data_fdt *)intr_alloc_map_data( INTR_MAP_DATA_FDT, len, M_WAITOK | M_ZERO); fdt_data->iparent = iparent; fdt_data->ncells = icells; memcpy(fdt_data->cells, intr, icells * sizeof(pcell_t)); irq = intr_map_irq(NULL, iparent, (struct intr_map_data *)fdt_data); return (irq); } #endif /* FDT */ diff --git a/sys/dev/ofw/ofwbus.c b/sys/dev/ofw/ofwbus.c index 4432f1704392..7660be8cec39 100644 --- a/sys/dev/ofw/ofwbus.c +++ b/sys/dev/ofw/ofwbus.c @@ -1,222 +1,201 @@ /*- * Copyright 1998 Massachusetts Institute of Technology * Copyright 2001 by Thomas Moestl . * Copyright 2006 by Marius Strobl . * All rights reserved. * * Permission to use, copy, modify, and distribute this software and * its documentation for any purpose and without fee is hereby * granted, provided that both the above copyright notice and this * permission notice appear in all copies, that both the above * copyright notice and this permission notice appear in all * supporting documentation, and that the name of M.I.T. not be used * in advertising or publicity pertaining to distribution of the * software without specific, written prior permission. M.I.T. makes * no representations about the suitability of this software for any * purpose. It is provided "as is" without express or implied * warranty. * * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT * SHALL M.I.T. 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. * * from: FreeBSD: src/sys/i386/i386/nexus.c,v 1.43 2001/02/09 */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #ifdef INTRNG #include #endif #include #include #include #include #include #include #include #include /* * The ofwbus (which is a pseudo-bus actually) iterates over the nodes that * hang from the Open Firmware root node and adds them as devices to this bus * (except some special nodes which are excluded) so that drivers can be - * attached to them. + * attached to them. There should be only one ofwbus in the system, added + * directly as a child of nexus0. */ -#ifndef __aarch64__ -static device_identify_t ofwbus_identify; -#endif static device_probe_t ofwbus_probe; static device_attach_t ofwbus_attach; static bus_alloc_resource_t ofwbus_alloc_resource; static bus_release_resource_t ofwbus_release_resource; static device_method_t ofwbus_methods[] = { /* Device interface */ -#ifndef __aarch64__ - DEVMETHOD(device_identify, ofwbus_identify), -#endif DEVMETHOD(device_probe, ofwbus_probe), DEVMETHOD(device_attach, ofwbus_attach), /* Bus interface */ DEVMETHOD(bus_alloc_resource, ofwbus_alloc_resource), DEVMETHOD(bus_adjust_resource, bus_generic_adjust_resource), DEVMETHOD(bus_release_resource, ofwbus_release_resource), DEVMETHOD_END }; DEFINE_CLASS_1(ofwbus, ofwbus_driver, ofwbus_methods, sizeof(struct simplebus_softc), simplebus_driver); static devclass_t ofwbus_devclass; EARLY_DRIVER_MODULE(ofwbus, nexus, ofwbus_driver, ofwbus_devclass, 0, 0, BUS_PASS_BUS + BUS_PASS_ORDER_MIDDLE); MODULE_VERSION(ofwbus, 1); -#ifndef __aarch64__ -static void -ofwbus_identify(driver_t *driver, device_t parent) -{ - - /* Check if Open Firmware has been instantiated */ - if (OF_peer(0) == 0) - return; - - if (device_find_child(parent, "ofwbus", -1) == NULL) - BUS_ADD_CHILD(parent, 0, "ofwbus", -1); -} -#endif - static int ofwbus_probe(device_t dev) { -#ifdef __aarch64__ if (OF_peer(0) == 0) return (ENXIO); -#endif device_set_desc(dev, "Open Firmware Device Tree"); return (BUS_PROBE_NOWILDCARD); } static int ofwbus_attach(device_t dev) { phandle_t node; struct ofw_bus_devinfo obd; node = OF_peer(0); /* * If no Open Firmware, bail early */ if (node == -1) return (ENXIO); /* * ofwbus bus starts on unamed node in FDT, so we cannot make * ofw_bus_devinfo from it. Pass node to simplebus_init directly. */ simplebus_init(dev, node); /* * Allow devices to identify. */ bus_generic_probe(dev); /* * Now walk the OFW tree and attach top-level devices. */ for (node = OF_child(node); node > 0; node = OF_peer(node)) { if (ofw_bus_gen_setup_devinfo(&obd, node) != 0) continue; simplebus_add_device(dev, node, 0, NULL, -1, NULL); ofw_bus_gen_destroy_devinfo(&obd); } return (bus_generic_attach(dev)); } static struct resource * ofwbus_alloc_resource(device_t bus, device_t child, int type, int *rid, rman_res_t start, rman_res_t end, rman_res_t count, u_int flags) { struct resource *rv; struct resource_list_entry *rle; bool isdefault, passthrough; isdefault = RMAN_IS_DEFAULT_RANGE(start, end); passthrough = (device_get_parent(child) != bus); rle = NULL; if (!passthrough && isdefault) { rle = resource_list_find(BUS_GET_RESOURCE_LIST(bus, child), type, *rid); if (rle == NULL) { if (bootverbose) device_printf(bus, "no default resources for " "rid = %d, type = %d\n", *rid, type); return (NULL); } start = rle->start; count = ummax(count, rle->count); end = ummax(rle->end, start + count - 1); } /* Let nexus handle the allocation. */ rv = bus_generic_alloc_resource(bus, child, type, rid, start, end, count, flags); if (rv == NULL) return (NULL); if (!passthrough && rle != NULL) { rle->res = rv; rle->start = rman_get_start(rv); rle->end = rman_get_end(rv); rle->count = rle->end - rle->start + 1; } return (rv); } static int ofwbus_release_resource(device_t bus, device_t child, int type, int rid, struct resource *r) { struct resource_list_entry *rle; bool passthrough; passthrough = (device_get_parent(child) != bus); if (!passthrough) { /* Clean resource list entry */ rle = resource_list_find(BUS_GET_RESOURCE_LIST(bus, child), type, rid); if (rle != NULL) rle->res = NULL; } /* Let nexus handle the release. */ return (bus_generic_release_resource(bus, child, type, rid, r)); } diff --git a/sys/powerpc/powerpc/nexus.c b/sys/powerpc/powerpc/nexus.c index 6edc7f258d39..78bcf6363d60 100644 --- a/sys/powerpc/powerpc/nexus.c +++ b/sys/powerpc/powerpc/nexus.c @@ -1,436 +1,440 @@ /*- * Copyright 1998 Massachusetts Institute of Technology * Copyright 2001 by Thomas Moestl . * Copyright 2006 by Marius Strobl . * All rights reserved. * * Permission to use, copy, modify, and distribute this software and * its documentation for any purpose and without fee is hereby * granted, provided that both the above copyright notice and this * permission notice appear in all copies, that both the above * copyright notice and this permission notice appear in all * supporting documentation, and that the name of M.I.T. not be used * in advertising or publicity pertaining to distribution of the * software without specific, written prior permission. M.I.T. makes * no representations about the suitability of this software for any * purpose. It is provided "as is" without express or implied * warranty. * * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT * SHALL M.I.T. 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. * * from: FreeBSD: src/sys/i386/i386/nexus.c,v 1.43 2001/02/09 */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* * The nexus handles root-level resource allocation requests and interrupt * mapping. All direct subdevices of nexus are attached by DEVICE_IDENTIFY(). */ static struct rman intr_rman; static struct rman mem_rman; static device_probe_t nexus_probe; static device_attach_t nexus_attach; static bus_setup_intr_t nexus_setup_intr; static bus_teardown_intr_t nexus_teardown_intr; static bus_alloc_resource_t nexus_alloc_resource; static bus_activate_resource_t nexus_activate_resource; static bus_deactivate_resource_t nexus_deactivate_resource; static bus_adjust_resource_t nexus_adjust_resource; static bus_release_resource_t nexus_release_resource; static int nexus_map_resource(device_t bus, device_t child, int type, struct resource *r, struct resource_map_request *argsp, struct resource_map *map); static int nexus_unmap_resource(device_t bus, device_t child, int type, struct resource *r, struct resource_map *map); static bus_space_tag_t nexus_get_bus_tag(device_t, device_t); #ifdef SMP static bus_bind_intr_t nexus_bind_intr; #endif static bus_config_intr_t nexus_config_intr; static ofw_bus_map_intr_t nexus_ofw_map_intr; static device_method_t nexus_methods[] = { /* Device interface */ DEVMETHOD(device_probe, nexus_probe), DEVMETHOD(device_attach, nexus_attach), /* Bus interface */ DEVMETHOD(bus_add_child, bus_generic_add_child), DEVMETHOD(bus_alloc_resource, nexus_alloc_resource), DEVMETHOD(bus_activate_resource, nexus_activate_resource), DEVMETHOD(bus_deactivate_resource, nexus_deactivate_resource), DEVMETHOD(bus_adjust_resource, nexus_adjust_resource), DEVMETHOD(bus_release_resource, nexus_release_resource), DEVMETHOD(bus_map_resource, nexus_map_resource), DEVMETHOD(bus_unmap_resource, nexus_unmap_resource), DEVMETHOD(bus_setup_intr, nexus_setup_intr), DEVMETHOD(bus_teardown_intr, nexus_teardown_intr), #ifdef SMP DEVMETHOD(bus_bind_intr, nexus_bind_intr), #endif DEVMETHOD(bus_config_intr, nexus_config_intr), DEVMETHOD(bus_get_bus_tag, nexus_get_bus_tag), /* ofw_bus interface */ DEVMETHOD(ofw_bus_map_intr, nexus_ofw_map_intr), DEVMETHOD_END }; static devclass_t nexus_devclass; DEFINE_CLASS_0(nexus, nexus_driver, nexus_methods, 1); EARLY_DRIVER_MODULE(nexus, root, nexus_driver, nexus_devclass, 0, 0, BUS_PASS_BUS); MODULE_VERSION(nexus, 1); static int nexus_probe(device_t dev) { device_quiet(dev); /* suppress attach message for neatness */ return (BUS_PROBE_DEFAULT); } static int nexus_attach(device_t dev) { intr_rman.rm_type = RMAN_ARRAY; intr_rman.rm_descr = "Interrupts"; mem_rman.rm_type = RMAN_ARRAY; mem_rman.rm_descr = "I/O memory addresses"; if (rman_init(&intr_rman) != 0 || rman_init(&mem_rman) != 0 || rman_manage_region(&intr_rman, 0, ~0) != 0 || rman_manage_region(&mem_rman, 0, BUS_SPACE_MAXADDR) != 0) panic("%s: failed to set up rmans.", __func__); + /* Add ofwbus0. */ + device_add_child(dev, "ofwbus", 0); + + /* Now, probe children. */ bus_generic_probe(dev); bus_generic_attach(dev); return (0); } static int nexus_setup_intr(device_t bus __unused, device_t child, struct resource *r, int flags, driver_filter_t *filt, driver_intr_t *intr, void *arg, void **cookiep) { int error, domain; if (r == NULL) panic("%s: NULL interrupt resource!", __func__); if (cookiep != NULL) *cookiep = NULL; if ((rman_get_flags(r) & RF_SHAREABLE) == 0) flags |= INTR_EXCL; /* We depend here on rman_activate_resource() being idempotent. */ error = rman_activate_resource(r); if (error) return (error); if (bus_get_domain(child, &domain) != 0) { if(bootverbose) device_printf(child, "no domain found\n"); domain = 0; } error = powerpc_setup_intr(device_get_nameunit(child), rman_get_start(r), filt, intr, arg, flags, cookiep, domain); return (error); } static int nexus_teardown_intr(device_t bus __unused, device_t child __unused, struct resource *r, void *ih) { if (r == NULL) return (EINVAL); return (powerpc_teardown_intr(ih)); } static bus_space_tag_t nexus_get_bus_tag(device_t bus __unused, device_t child __unused) { #if BYTE_ORDER == LITTLE_ENDIAN return(&bs_le_tag); #else return(&bs_be_tag); #endif } #ifdef SMP static int nexus_bind_intr(device_t bus __unused, device_t child __unused, struct resource *r, int cpu) { return (powerpc_bind_intr(rman_get_start(r), cpu)); } #endif static int nexus_config_intr(device_t dev, int irq, enum intr_trigger trig, enum intr_polarity pol) { return (powerpc_config_intr(irq, trig, pol)); } static int nexus_ofw_map_intr(device_t dev, device_t child, phandle_t iparent, int icells, pcell_t *irq) { u_int intr = MAP_IRQ(iparent, irq[0]); if (icells > 1) powerpc_fw_config_intr(intr, irq[1]); return (intr); } /* * Allocate a resource on behalf of child. NB: child is usually going to be a * child of one of our descendants, not a direct child of nexus0. */ static struct resource * nexus_alloc_resource(device_t bus, device_t child, int type, int *rid, rman_res_t start, rman_res_t end, rman_res_t count, u_int flags) { struct rman *rm; struct resource *rv; switch (type) { case SYS_RES_IRQ: rm = &intr_rman; break; case SYS_RES_MEMORY: rm = &mem_rman; break; default: return (NULL); } rv = rman_reserve_resource(rm, start, end, count, flags & ~RF_ACTIVE, child); if (rv == NULL) return (NULL); rman_set_rid(rv, *rid); if ((flags & RF_ACTIVE) != 0) { if (bus_activate_resource(child, type, *rid, rv) != 0) { rman_release_resource(rv); return (NULL); } } return (rv); } static int nexus_activate_resource(device_t bus __unused, device_t child __unused, int type, int rid __unused, struct resource *r) { if (type == SYS_RES_MEMORY) { vm_paddr_t start; void *p; start = (vm_paddr_t) rman_get_start(r); if (bootverbose) printf("nexus mapdev: start %jx, len %jd\n", (uintmax_t)start, rman_get_size(r)); p = pmap_mapdev(start, (vm_size_t) rman_get_size(r)); if (p == NULL) return (ENOMEM); rman_set_virtual(r, p); rman_set_bustag(r, &bs_be_tag); rman_set_bushandle(r, (u_long)p); } return (rman_activate_resource(r)); } static int nexus_deactivate_resource(device_t bus __unused, device_t child __unused, int type __unused, int rid __unused, struct resource *r) { /* * If this is a memory resource, unmap it. */ if ((type == SYS_RES_MEMORY) || (type == SYS_RES_IOPORT)) { bus_size_t psize; psize = rman_get_size(r); pmap_unmapdev((vm_offset_t)rman_get_virtual(r), psize); } return (rman_deactivate_resource(r)); } static int nexus_adjust_resource(device_t bus, device_t child __unused, int type, struct resource *r, rman_res_t start, rman_res_t end) { struct rman *rm; switch (type) { case SYS_RES_IRQ: rm = &intr_rman; break; case SYS_RES_MEMORY: rm = &mem_rman; break; default: return (EINVAL); } if (rm == NULL) return (ENXIO); if (rman_is_region_manager(r, rm) == 0) return (EINVAL); return (rman_adjust_resource(r, start, end)); } static int nexus_release_resource(device_t bus, device_t child, int type, int rid, struct resource *r) { int error; if ((rman_get_flags(r) & RF_ACTIVE) != 0) { error = bus_deactivate_resource(child, type, rid, r); if (error) return (error); } return (rman_release_resource(r)); } static int nexus_map_resource(device_t bus, device_t child, int type, struct resource *r, struct resource_map_request *argsp, struct resource_map *map) { struct resource_map_request args; rman_res_t end, length, start; /* Resources must be active to be mapped. */ if (!(rman_get_flags(r) & RF_ACTIVE)) return (ENXIO); /* Mappings are only supported on I/O and memory resources. */ switch (type) { case SYS_RES_IOPORT: case SYS_RES_MEMORY: break; default: return (EINVAL); } resource_init_map_request(&args); if (argsp != NULL) bcopy(argsp, &args, imin(argsp->size, args.size)); start = rman_get_start(r) + args.offset; if (args.length == 0) length = rman_get_size(r); else length = args.length; end = start + length - 1; if (start > rman_get_end(r) || start < rman_get_start(r)) return (EINVAL); if (end > rman_get_end(r) || end < start) return (EINVAL); /* * If this is a memory resource, map it into the kernel. */ switch (type) { case SYS_RES_IOPORT: panic("%s:%d SYS_RES_IOPORT handling not implemented", __func__, __LINE__); /* XXX: untested map->r_bushandle = start; map->r_bustag = nexus_get_bus_tag(NULL, NULL); map->r_size = length; map->r_vaddr = NULL; */ break; case SYS_RES_MEMORY: map->r_vaddr = pmap_mapdev_attr(start, length, args.memattr); map->r_bustag = nexus_get_bus_tag(NULL, NULL); map->r_size = length; map->r_bushandle = (bus_space_handle_t)map->r_vaddr; break; } return (0); } static int nexus_unmap_resource(device_t bus, device_t child, int type, struct resource *r, struct resource_map *map) { /* * If this is a memory resource, unmap it. */ switch (type) { case SYS_RES_MEMORY: pmap_unmapdev((vm_offset_t)map->r_vaddr, map->r_size); /* FALLTHROUGH */ case SYS_RES_IOPORT: break; default: return (EINVAL); } return (0); } diff --git a/sys/riscv/riscv/nexus.c b/sys/riscv/riscv/nexus.c index 9cafb90fd34a..0333c851af2c 100644 --- a/sys/riscv/riscv/nexus.c +++ b/sys/riscv/riscv/nexus.c @@ -1,495 +1,499 @@ /*- * Copyright 1998 Massachusetts Institute of Technology * * Permission to use, copy, modify, and distribute this software and * its documentation for any purpose and without fee is hereby * granted, provided that both the above copyright notice and this * permission notice appear in all copies, that both the above * copyright notice and this permission notice appear in all * supporting documentation, and that the name of M.I.T. not be used * in advertising or publicity pertaining to distribution of the * software without specific, written prior permission. M.I.T. makes * no representations about the suitability of this software for any * purpose. It is provided "as is" without express or implied * warranty. * * THIS SOFTWARE IS PROVIDED BY M.I.T. ``AS IS''. M.I.T. DISCLAIMS * ALL EXPRESS OR IMPLIED WARRANTIES WITH REGARD TO THIS SOFTWARE, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT * SHALL M.I.T. 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. * */ /* * This code implements a `root nexus' for RISC-V Architecture * machines. The function of the root nexus is to serve as an * attachment point for both processors and buses, and to manage * resources which are common to all of them. In particular, * this code implements the core resource managers for interrupt * requests and I/O memory address space. */ #include "opt_platform.h" #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef FDT #include #include #include "ofw_bus_if.h" #endif extern struct bus_space memmap_bus; static MALLOC_DEFINE(M_NEXUSDEV, "nexusdev", "Nexus device"); struct nexus_device { struct resource_list nx_resources; }; #define DEVTONX(dev) ((struct nexus_device *)device_get_ivars(dev)) static struct rman mem_rman; static struct rman irq_rman; static device_probe_t nexus_fdt_probe; static int nexus_attach(device_t); static int nexus_print_child(device_t, device_t); static device_t nexus_add_child(device_t, u_int, const char *, int); static struct resource *nexus_alloc_resource(device_t, device_t, int, int *, rman_res_t, rman_res_t, rman_res_t, u_int); static int nexus_activate_resource(device_t, device_t, int, int, struct resource *); static int nexus_adjust_resource(device_t, device_t, int, struct resource *, rman_res_t, rman_res_t); static int nexus_map_resource(device_t, device_t, int, struct resource *, struct resource_map_request *, struct resource_map *); static int nexus_config_intr(device_t dev, int irq, enum intr_trigger trig, enum intr_polarity pol); static struct resource_list *nexus_get_reslist(device_t, device_t); static int nexus_set_resource(device_t, device_t, int, int, rman_res_t, rman_res_t); static int nexus_deactivate_resource(device_t, device_t, int, int, struct resource *); static int nexus_release_resource(device_t, device_t, int, int, struct resource *); static int nexus_setup_intr(device_t dev, device_t child, struct resource *res, int flags, driver_filter_t *filt, driver_intr_t *intr, void *arg, void **cookiep); static int nexus_teardown_intr(device_t, device_t, struct resource *, void *); static bus_space_tag_t nexus_get_bus_tag(device_t, device_t); static int nexus_ofw_map_intr(device_t dev, device_t child, phandle_t iparent, int icells, pcell_t *intr); static device_method_t nexus_methods[] = { /* Device interface */ DEVMETHOD(device_probe, nexus_fdt_probe), DEVMETHOD(device_attach, nexus_attach), /* OFW interface */ DEVMETHOD(ofw_bus_map_intr, nexus_ofw_map_intr), /* Bus interface */ DEVMETHOD(bus_print_child, nexus_print_child), DEVMETHOD(bus_add_child, nexus_add_child), DEVMETHOD(bus_alloc_resource, nexus_alloc_resource), DEVMETHOD(bus_activate_resource, nexus_activate_resource), DEVMETHOD(bus_adjust_resource, nexus_adjust_resource), DEVMETHOD(bus_map_resource, nexus_map_resource), DEVMETHOD(bus_config_intr, nexus_config_intr), DEVMETHOD(bus_get_resource_list, nexus_get_reslist), DEVMETHOD(bus_set_resource, nexus_set_resource), DEVMETHOD(bus_deactivate_resource, nexus_deactivate_resource), DEVMETHOD(bus_release_resource, nexus_release_resource), DEVMETHOD(bus_setup_intr, nexus_setup_intr), DEVMETHOD(bus_teardown_intr, nexus_teardown_intr), DEVMETHOD(bus_get_bus_tag, nexus_get_bus_tag), { 0, 0 } }; static driver_t nexus_fdt_driver = { "nexus", nexus_methods, 1 /* no softc */ }; static int nexus_fdt_probe(device_t dev) { device_quiet(dev); return (BUS_PROBE_DEFAULT); } static int nexus_attach(device_t dev) { mem_rman.rm_start = 0; mem_rman.rm_end = BUS_SPACE_MAXADDR; mem_rman.rm_type = RMAN_ARRAY; mem_rman.rm_descr = "I/O memory addresses"; if (rman_init(&mem_rman) || rman_manage_region(&mem_rman, 0, BUS_SPACE_MAXADDR)) panic("nexus_attach mem_rman"); irq_rman.rm_start = 0; irq_rman.rm_end = ~0; irq_rman.rm_type = RMAN_ARRAY; irq_rman.rm_descr = "Interrupts"; if (rman_init(&irq_rman) || rman_manage_region(&irq_rman, 0, ~0)) panic("nexus_attach irq_rman"); - nexus_add_child(dev, 8, "timer", 0); - nexus_add_child(dev, 9, "rcons", 0); - nexus_add_child(dev, 10, "ofwbus", 0); + /* + * Add direct children of nexus. Devices will be probed and attached + * through ofwbus0. + */ + nexus_add_child(dev, 0, "timer", 0); + nexus_add_child(dev, 1, "rcons", 0); + nexus_add_child(dev, 2, "ofwbus", 0); bus_generic_probe(dev); bus_generic_attach(dev); return (0); } static int nexus_print_child(device_t bus, device_t child) { int retval = 0; retval += bus_print_child_header(bus, child); retval += printf("\n"); return (retval); } static device_t nexus_add_child(device_t bus, u_int order, const char *name, int unit) { device_t child; struct nexus_device *ndev; ndev = malloc(sizeof(struct nexus_device), M_NEXUSDEV, M_NOWAIT|M_ZERO); if (!ndev) return (0); resource_list_init(&ndev->nx_resources); child = device_add_child_ordered(bus, order, name, unit); /* should we free this in nexus_child_detached? */ device_set_ivars(child, ndev); return (child); } /* * Allocate a resource on behalf of child. NB: child is usually going to be a * child of one of our descendants, not a direct child of nexus0. * (Exceptions include footbridge.) */ static struct resource * nexus_alloc_resource(device_t bus, device_t child, int type, int *rid, rman_res_t start, rman_res_t end, rman_res_t count, u_int flags) { struct nexus_device *ndev = DEVTONX(child); struct resource *rv; struct resource_list_entry *rle; struct rman *rm; int needactivate = flags & RF_ACTIVE; /* * If this is an allocation of the "default" range for a given * RID, and we know what the resources for this device are * (ie. they aren't maintained by a child bus), then work out * the start/end values. */ if (RMAN_IS_DEFAULT_RANGE(start, end) && (count == 1)) { if (device_get_parent(child) != bus || ndev == NULL) return(NULL); rle = resource_list_find(&ndev->nx_resources, type, *rid); if (rle == NULL) return(NULL); start = rle->start; end = rle->end; count = rle->count; } switch (type) { case SYS_RES_IRQ: rm = &irq_rman; break; case SYS_RES_MEMORY: case SYS_RES_IOPORT: rm = &mem_rman; break; default: return (NULL); } rv = rman_reserve_resource(rm, start, end, count, flags, child); if (rv == NULL) return (NULL); rman_set_rid(rv, *rid); rman_set_bushandle(rv, rman_get_start(rv)); if (needactivate) { if (bus_activate_resource(child, type, *rid, rv)) { rman_release_resource(rv); return (NULL); } } return (rv); } static int nexus_adjust_resource(device_t bus __unused, device_t child __unused, int type, struct resource *r, rman_res_t start, rman_res_t end) { struct rman *rm; switch (type) { case SYS_RES_IRQ: rm = &irq_rman; break; case SYS_RES_MEMORY: rm = &mem_rman; break; default: return (EINVAL); } if (rman_is_region_manager(r, rm) == 0) return (EINVAL); return (rman_adjust_resource(r, start, end)); } static int nexus_release_resource(device_t bus, device_t child, int type, int rid, struct resource *res) { int error; if (rman_get_flags(res) & RF_ACTIVE) { error = bus_deactivate_resource(child, type, rid, res); if (error) return (error); } return (rman_release_resource(res)); } static int nexus_config_intr(device_t dev, int irq, enum intr_trigger trig, enum intr_polarity pol) { return (EOPNOTSUPP); } static int nexus_setup_intr(device_t dev, device_t child, struct resource *res, int flags, driver_filter_t *filt, driver_intr_t *intr, void *arg, void **cookiep) { int error; if ((rman_get_flags(res) & RF_SHAREABLE) == 0) flags |= INTR_EXCL; /* We depend here on rman_activate_resource() being idempotent. */ error = rman_activate_resource(res); if (error) return (error); error = intr_setup_irq(child, res, filt, intr, arg, flags, cookiep); return (error); } static int nexus_teardown_intr(device_t dev, device_t child, struct resource *r, void *ih) { return (intr_teardown_irq(child, r, ih)); } static bus_space_tag_t nexus_get_bus_tag(device_t bus __unused, device_t child __unused) { return (&memmap_bus); } static int nexus_activate_resource(device_t bus, device_t child, int type, int rid, struct resource *r) { struct resource_map map; int err; if ((err = rman_activate_resource(r)) != 0) return (err); /* * If this is a memory resource, map it into the kernel. */ switch (type) { case SYS_RES_IOPORT: case SYS_RES_MEMORY: if ((rman_get_flags(r) & RF_UNMAPPED) == 0) { err = nexus_map_resource(bus, child, type, r, NULL, &map); if (err != 0) { rman_deactivate_resource(r); return (err); } rman_set_mapping(r, &map); } break; case SYS_RES_IRQ: err = intr_activate_irq(child, r); if (err != 0) { rman_deactivate_resource(r); return (err); } } return (0); } static struct resource_list * nexus_get_reslist(device_t dev, device_t child) { struct nexus_device *ndev = DEVTONX(child); return (&ndev->nx_resources); } static int nexus_set_resource(device_t dev, device_t child, int type, int rid, rman_res_t start, rman_res_t count) { struct nexus_device *ndev = DEVTONX(child); struct resource_list *rl = &ndev->nx_resources; /* XXX this should return a success/failure indicator */ resource_list_add(rl, type, rid, start, start + count - 1, count); return(0); } static int nexus_deactivate_resource(device_t bus, device_t child, int type, int rid, struct resource *r) { bus_size_t psize; bus_space_handle_t vaddr; if (type == SYS_RES_MEMORY || type == SYS_RES_IOPORT) { psize = (bus_size_t)rman_get_size(r); vaddr = rman_get_bushandle(r); if (vaddr != 0) { bus_space_unmap(&memmap_bus, vaddr, psize); rman_set_virtual(r, NULL); rman_set_bushandle(r, 0); } } else if (type == SYS_RES_IRQ) { intr_deactivate_irq(child, r); } return (rman_deactivate_resource(r)); } static int nexus_map_resource(device_t bus, device_t child, int type, struct resource *r, struct resource_map_request *argsp, struct resource_map *map) { struct resource_map_request args; rman_res_t end, length, start; /* Resources must be active to be mapped. */ if ((rman_get_flags(r) & RF_ACTIVE) == 0) return (ENXIO); /* Mappings are only supported on I/O and memory resources. */ switch (type) { case SYS_RES_IOPORT: case SYS_RES_MEMORY: break; default: return (EINVAL); } resource_init_map_request(&args); if (argsp != NULL) bcopy(argsp, &args, imin(argsp->size, args.size)); start = rman_get_start(r) + args.offset; if (args.length == 0) length = rman_get_size(r); else length = args.length; end = start + length - 1; if (start > rman_get_end(r) || start < rman_get_start(r)) return (EINVAL); if (end > rman_get_end(r) || end < start) return (EINVAL); map->r_vaddr = pmap_mapdev(start, length); map->r_bustag = &memmap_bus; map->r_size = length; /* * The handle is the virtual address. */ map->r_bushandle = (bus_space_handle_t)map->r_vaddr; return (0); } static devclass_t nexus_fdt_devclass; EARLY_DRIVER_MODULE(nexus_fdt, root, nexus_fdt_driver, nexus_fdt_devclass, 0, 0, BUS_PASS_BUS + BUS_PASS_ORDER_FIRST); static int nexus_ofw_map_intr(device_t dev, device_t child, phandle_t iparent, int icells, pcell_t *intr) { struct intr_map_data_fdt *fdt_data; size_t len; u_int irq; len = sizeof(*fdt_data) + icells * sizeof(pcell_t); fdt_data = (struct intr_map_data_fdt *)intr_alloc_map_data( INTR_MAP_DATA_FDT, len, M_WAITOK | M_ZERO); fdt_data->iparent = iparent; fdt_data->ncells = icells; memcpy(fdt_data->cells, intr, icells * sizeof(pcell_t)); irq = intr_map_irq(NULL, iparent, (struct intr_map_data *)fdt_data); return (irq); }