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ofw_bus.h
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ofw_bus_if.m
(5.32 KB)
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ofw_bus_subr.c
(24.04 KB)
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ofw_bus_subr.h
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ofw_console.c
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ofw_cpu.c
(10.56 KB)
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ofw_cpu.h
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ofw_disk.c
(4.95 KB)
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ofw_fdt.c
(12.09 KB)
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ofw_graph.c
(4.68 KB)
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ofw_graph.h
(1.93 KB)
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ofw_if.m
(6.74 KB)
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ofw_pci.h
(3.57 KB)
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ofw_standard.c
(16.62 KB)
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ofw_subr.c
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ofw_subr.h
(2.29 KB)
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ofwbus.c
(7.77 KB)
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ofwpci.c
(17.52 KB)
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ofwpci.h
(2.53 KB)
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ofwvar.h
(2.75 KB)
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openfirm.c
(18.85 KB)
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openfirm.h
(7.47 KB)
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openfirmio.c
(7.59 KB)
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openfirmio.h
(3.7 KB)
Editing: openfirm.c
/* $NetBSD: Locore.c,v 1.7 2000/08/20 07:04:59 tsubai Exp $ */ /*- * SPDX-License-Identifier: BSD-4-Clause * * Copyright (C) 1995, 1996 Wolfgang Solfrank. * Copyright (C) 1995, 1996 TooLs GmbH. * 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. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by TooLs GmbH. * 4. The name of TooLs GmbH may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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. */ /*- * Copyright (C) 2000 Benno Rice. * 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. * * THIS SOFTWARE IS PROVIDED BY Benno Rice ``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 TOOLS GMBH 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. */ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); #include "opt_platform.h" #include <sys/param.h> #include <sys/kernel.h> #include <sys/lock.h> #include <sys/malloc.h> #include <sys/mutex.h> #include <sys/queue.h> #include <sys/systm.h> #include <sys/endian.h> #include <machine/stdarg.h> #include <dev/ofw/ofwvar.h> #include <dev/ofw/openfirm.h> #include "ofw_if.h" static void OF_putchar(int c, void *arg); MALLOC_DEFINE(M_OFWPROP, "openfirm", "Open Firmware properties"); static ihandle_t stdout; static ofw_def_t *ofw_def_impl = NULL; static ofw_t ofw_obj; static struct ofw_kobj ofw_kernel_obj; static struct kobj_ops ofw_kernel_kops; struct xrefinfo { phandle_t xref; phandle_t node; device_t dev; SLIST_ENTRY(xrefinfo) next_entry; }; static SLIST_HEAD(, xrefinfo) xreflist = SLIST_HEAD_INITIALIZER(xreflist); static struct mtx xreflist_lock; static boolean_t xref_init_done; #define FIND_BY_XREF 0 #define FIND_BY_NODE 1 #define FIND_BY_DEV 2 /* * xref-phandle-device lookup helper routines. * * As soon as we are able to use malloc(), walk the node tree and build a list * of info that cross-references node handles, xref handles, and device_t * instances. This list exists primarily to allow association of a device_t * with an xref handle, but it is also used to speed up translation between xref * and node handles. Before malloc() is available we have to recursively search * the node tree each time we want to translate between a node and xref handle. * Afterwards we can do the translations by searching this much shorter list. */ static void xrefinfo_create(phandle_t node) { struct xrefinfo * xi; phandle_t child, xref; /* * Recursively descend from parent, looking for nodes with a property * named either "phandle", "ibm,phandle", or "linux,phandle". For each * such node found create an entry in the xreflist. */ for (child = OF_child(node); child != 0; child = OF_peer(child)) { xrefinfo_create(child); if (OF_getencprop(child, "phandle", &xref, sizeof(xref)) == -1 && OF_getencprop(child, "ibm,phandle", &xref, sizeof(xref)) == -1 && OF_getencprop(child, "linux,phandle", &xref, sizeof(xref)) == -1) continue; xi = malloc(sizeof(*xi), M_OFWPROP, M_WAITOK | M_ZERO); xi->node = child; xi->xref = xref; SLIST_INSERT_HEAD(&xreflist, xi, next_entry); } } static void xrefinfo_init(void *unsed) { /* * There is no locking during this init because it runs much earlier * than any of the clients/consumers of the xref list data, but we do * initialize the mutex that will be used for access later. */ mtx_init(&xreflist_lock, "OF xreflist lock", NULL, MTX_DEF); xrefinfo_create(OF_peer(0)); xref_init_done = true; } SYSINIT(xrefinfo, SI_SUB_KMEM, SI_ORDER_ANY, xrefinfo_init, NULL); static struct xrefinfo * xrefinfo_find(uintptr_t key, int find_by) { struct xrefinfo *rv, *xi; rv = NULL; mtx_lock(&xreflist_lock); SLIST_FOREACH(xi, &xreflist, next_entry) { if ((find_by == FIND_BY_XREF && (phandle_t)key == xi->xref) || (find_by == FIND_BY_NODE && (phandle_t)key == xi->node) || (find_by == FIND_BY_DEV && key == (uintptr_t)xi->dev)) { rv = xi; break; } } mtx_unlock(&xreflist_lock); return (rv); } static struct xrefinfo * xrefinfo_add(phandle_t node, phandle_t xref, device_t dev) { struct xrefinfo *xi; xi = malloc(sizeof(*xi), M_OFWPROP, M_WAITOK); xi->node = node; xi->xref = xref; xi->dev = dev; mtx_lock(&xreflist_lock); SLIST_INSERT_HEAD(&xreflist, xi, next_entry); mtx_unlock(&xreflist_lock); return (xi); } /* * OFW install routines. Highest priority wins, equal priority also * overrides allowing last-set to win. */ SET_DECLARE(ofw_set, ofw_def_t); boolean_t OF_install(char *name, int prio) { ofw_def_t *ofwp, **ofwpp; static int curr_prio = 0; /* Allow OF layer to be uninstalled */ if (name == NULL) { ofw_def_impl = NULL; return (FALSE); } /* * Try and locate the OFW kobj corresponding to the name. */ SET_FOREACH(ofwpp, ofw_set) { ofwp = *ofwpp; if (ofwp->name && !strcmp(ofwp->name, name) && prio >= curr_prio) { curr_prio = prio; ofw_def_impl = ofwp; return (TRUE); } } return (FALSE); } /* Initializer */ int OF_init(void *cookie) { phandle_t chosen; int rv; if (ofw_def_impl == NULL) return (-1); ofw_obj = &ofw_kernel_obj; /* * Take care of compiling the selected class, and * then statically initialize the OFW object. */ kobj_class_compile_static(ofw_def_impl, &ofw_kernel_kops); kobj_init_static((kobj_t)ofw_obj, ofw_def_impl); rv = OFW_INIT(ofw_obj, cookie); if ((chosen = OF_finddevice("/chosen")) != -1) if (OF_getencprop(chosen, "stdout", &stdout, sizeof(stdout)) == -1) stdout = -1; return (rv); } static void OF_putchar(int c, void *arg __unused) { char cbuf; if (c == '\n') { cbuf = '\r'; OF_write(stdout, &cbuf, 1); } cbuf = c; OF_write(stdout, &cbuf, 1); } void OF_printf(const char *fmt, ...) { va_list va; va_start(va, fmt); (void)kvprintf(fmt, OF_putchar, NULL, 10, va); va_end(va); } /* * Generic functions */ /* Test to see if a service exists. */ int OF_test(const char *name) { if (ofw_def_impl == NULL) return (-1); return (OFW_TEST(ofw_obj, name)); } int OF_interpret(const char *cmd, int nreturns, ...) { va_list ap; cell_t slots[16]; int i = 0; int status; if (ofw_def_impl == NULL) return (-1); status = OFW_INTERPRET(ofw_obj, cmd, nreturns, slots); if (status == -1) return (status); va_start(ap, nreturns); while (i < nreturns) *va_arg(ap, cell_t *) = slots[i++]; va_end(ap); return (status); } /* * Device tree functions */ /* Return the next sibling of this node or 0. */ phandle_t OF_peer(phandle_t node) { if (ofw_def_impl == NULL) return (0); return (OFW_PEER(ofw_obj, node)); } /* Return the first child of this node or 0. */ phandle_t OF_child(phandle_t node) { if (ofw_def_impl == NULL) return (0); return (OFW_CHILD(ofw_obj, node)); } /* Return the parent of this node or 0. */ phandle_t OF_parent(phandle_t node) { if (ofw_def_impl == NULL) return (0); return (OFW_PARENT(ofw_obj, node)); } /* Return the package handle that corresponds to an instance handle. */ phandle_t OF_instance_to_package(ihandle_t instance) { if (ofw_def_impl == NULL) return (-1); return (OFW_INSTANCE_TO_PACKAGE(ofw_obj, instance)); } /* Get the length of a property of a package. */ ssize_t OF_getproplen(phandle_t package, const char *propname) { if (ofw_def_impl == NULL) return (-1); return (OFW_GETPROPLEN(ofw_obj, package, propname)); } /* Check existence of a property of a package. */ int OF_hasprop(phandle_t package, const char *propname) { return (OF_getproplen(package, propname) >= 0 ? 1 : 0); } /* Get the value of a property of a package. */ ssize_t OF_getprop(phandle_t package, const char *propname, void *buf, size_t buflen) { if (ofw_def_impl == NULL) return (-1); return (OFW_GETPROP(ofw_obj, package, propname, buf, buflen)); } ssize_t OF_getencprop(phandle_t node, const char *propname, pcell_t *buf, size_t len) { ssize_t retval; int i; KASSERT(len % 4 == 0, ("Need a multiple of 4 bytes")); retval = OF_getprop(node, propname, buf, len); if (retval <= 0) return (retval); for (i = 0; i < len/4; i++) buf[i] = be32toh(buf[i]); return (retval); } /* * Recursively search the node and its parent for the given property, working * downward from the node to the device tree root. Returns the value of the * first match. */ ssize_t OF_searchprop(phandle_t node, const char *propname, void *buf, size_t len) { ssize_t rv; for (; node != 0; node = OF_parent(node)) if ((rv = OF_getprop(node, propname, buf, len)) != -1) return (rv); return (-1); } ssize_t OF_searchencprop(phandle_t node, const char *propname, pcell_t *buf, size_t len) { ssize_t rv; for (; node != 0; node = OF_parent(node)) if ((rv = OF_getencprop(node, propname, buf, len)) != -1) return (rv); return (-1); } /* * Store the value of a property of a package into newly allocated memory * (using the M_OFWPROP malloc pool and M_WAITOK). */ ssize_t OF_getprop_alloc(phandle_t package, const char *propname, void **buf) { int len; *buf = NULL; if ((len = OF_getproplen(package, propname)) == -1) return (-1); if (len > 0) { *buf = malloc(len, M_OFWPROP, M_WAITOK); if (OF_getprop(package, propname, *buf, len) == -1) { free(*buf, M_OFWPROP); *buf = NULL; return (-1); } } return (len); } /* * Store the value of a property of a package into newly allocated memory * (using the M_OFWPROP malloc pool and M_WAITOK). elsz is the size of a * single element, the number of elements is return in number. */ ssize_t OF_getprop_alloc_multi(phandle_t package, const char *propname, int elsz, void **buf) { int len; *buf = NULL; if ((len = OF_getproplen(package, propname)) == -1 || len % elsz != 0) return (-1); if (len > 0) { *buf = malloc(len, M_OFWPROP, M_WAITOK); if (OF_getprop(package, propname, *buf, len) == -1) { free(*buf, M_OFWPROP); *buf = NULL; return (-1); } } return (len / elsz); } ssize_t OF_getencprop_alloc(phandle_t package, const char *name, void **buf) { ssize_t ret; ret = OF_getencprop_alloc_multi(package, name, sizeof(pcell_t), buf); if (ret < 0) return (ret); else return (ret * sizeof(pcell_t)); } ssize_t OF_getencprop_alloc_multi(phandle_t package, const char *name, int elsz, void **buf) { ssize_t retval; pcell_t *cell; int i; retval = OF_getprop_alloc_multi(package, name, elsz, buf); if (retval == -1) return (-1); cell = *buf; for (i = 0; i < retval * elsz / 4; i++) cell[i] = be32toh(cell[i]); return (retval); } /* Free buffer allocated by OF_getencprop_alloc or OF_getprop_alloc */ void OF_prop_free(void *buf) { free(buf, M_OFWPROP); } /* Get the next property of a package. */ int OF_nextprop(phandle_t package, const char *previous, char *buf, size_t size) { if (ofw_def_impl == NULL) return (-1); return (OFW_NEXTPROP(ofw_obj, package, previous, buf, size)); } /* Set the value of a property of a package. */ int OF_setprop(phandle_t package, const char *propname, const void *buf, size_t len) { if (ofw_def_impl == NULL) return (-1); return (OFW_SETPROP(ofw_obj, package, propname, buf,len)); } /* Convert a device specifier to a fully qualified pathname. */ ssize_t OF_canon(const char *device, char *buf, size_t len) { if (ofw_def_impl == NULL) return (-1); return (OFW_CANON(ofw_obj, device, buf, len)); } /* Return a package handle for the specified device. */ phandle_t OF_finddevice(const char *device) { if (ofw_def_impl == NULL) return (-1); return (OFW_FINDDEVICE(ofw_obj, device)); } /* Return the fully qualified pathname corresponding to an instance. */ ssize_t OF_instance_to_path(ihandle_t instance, char *buf, size_t len) { if (ofw_def_impl == NULL) return (-1); return (OFW_INSTANCE_TO_PATH(ofw_obj, instance, buf, len)); } /* Return the fully qualified pathname corresponding to a package. */ ssize_t OF_package_to_path(phandle_t package, char *buf, size_t len) { if (ofw_def_impl == NULL) return (-1); return (OFW_PACKAGE_TO_PATH(ofw_obj, package, buf, len)); } /* Look up effective phandle (see FDT/PAPR spec) */ static phandle_t OF_child_xref_phandle(phandle_t parent, phandle_t xref) { phandle_t child, rxref; /* * Recursively descend from parent, looking for a node with a property * named either "phandle", "ibm,phandle", or "linux,phandle" that * matches the xref we are looking for. */ for (child = OF_child(parent); child != 0; child = OF_peer(child)) { rxref = OF_child_xref_phandle(child, xref); if (rxref != -1) return (rxref); if (OF_getencprop(child, "phandle", &rxref, sizeof(rxref)) == -1 && OF_getencprop(child, "ibm,phandle", &rxref, sizeof(rxref)) == -1 && OF_getencprop(child, "linux,phandle", &rxref, sizeof(rxref)) == -1) continue; if (rxref == xref) return (child); } return (-1); } phandle_t OF_node_from_xref(phandle_t xref) { struct xrefinfo *xi; phandle_t node; if (xref_init_done) { if ((xi = xrefinfo_find(xref, FIND_BY_XREF)) == NULL) return (xref); return (xi->node); } if ((node = OF_child_xref_phandle(OF_peer(0), xref)) == -1) return (xref); return (node); } phandle_t OF_xref_from_node(phandle_t node) { struct xrefinfo *xi; phandle_t xref; if (xref_init_done) { if ((xi = xrefinfo_find(node, FIND_BY_NODE)) == NULL) return (node); return (xi->xref); } if (OF_getencprop(node, "phandle", &xref, sizeof(xref)) == -1 && OF_getencprop(node, "ibm,phandle", &xref, sizeof(xref)) == -1 && OF_getencprop(node, "linux,phandle", &xref, sizeof(xref)) == -1) return (node); return (xref); } device_t OF_device_from_xref(phandle_t xref) { struct xrefinfo *xi; if (xref_init_done) { if ((xi = xrefinfo_find(xref, FIND_BY_XREF)) == NULL) return (NULL); return (xi->dev); } panic("Attempt to find device before xreflist_init"); } phandle_t OF_xref_from_device(device_t dev) { struct xrefinfo *xi; if (xref_init_done) { if ((xi = xrefinfo_find((uintptr_t)dev, FIND_BY_DEV)) == NULL) return (0); return (xi->xref); } panic("Attempt to find xref before xreflist_init"); } int OF_device_register_xref(phandle_t xref, device_t dev) { struct xrefinfo *xi; /* * If the given xref handle doesn't already exist in the list then we * add a list entry. In theory this can only happen on a system where * nodes don't contain phandle properties and xref and node handles are * synonymous, so the xref handle is added as the node handle as well. */ if (xref_init_done) { if ((xi = xrefinfo_find(xref, FIND_BY_XREF)) == NULL) xrefinfo_add(xref, xref, dev); else xi->dev = dev; return (0); } panic("Attempt to register device before xreflist_init"); } /* Call the method in the scope of a given instance. */ int OF_call_method(const char *method, ihandle_t instance, int nargs, int nreturns, ...) { va_list ap; cell_t args_n_results[12]; int n, status; if (nargs > 6 || ofw_def_impl == NULL) return (-1); va_start(ap, nreturns); for (n = 0; n < nargs; n++) args_n_results[n] = va_arg(ap, cell_t); status = OFW_CALL_METHOD(ofw_obj, instance, method, nargs, nreturns, args_n_results); if (status != 0) return (status); for (; n < nargs + nreturns; n++) *va_arg(ap, cell_t *) = args_n_results[n]; va_end(ap); return (0); } /* * Device I/O functions */ /* Open an instance for a device. */ ihandle_t OF_open(const char *device) { if (ofw_def_impl == NULL) return (0); return (OFW_OPEN(ofw_obj, device)); } /* Close an instance. */ void OF_close(ihandle_t instance) { if (ofw_def_impl == NULL) return; OFW_CLOSE(ofw_obj, instance); } /* Read from an instance. */ ssize_t OF_read(ihandle_t instance, void *addr, size_t len) { if (ofw_def_impl == NULL) return (-1); return (OFW_READ(ofw_obj, instance, addr, len)); } /* Write to an instance. */ ssize_t OF_write(ihandle_t instance, const void *addr, size_t len) { if (ofw_def_impl == NULL) return (-1); return (OFW_WRITE(ofw_obj, instance, addr, len)); } /* Seek to a position. */ int OF_seek(ihandle_t instance, uint64_t pos) { if (ofw_def_impl == NULL) return (-1); return (OFW_SEEK(ofw_obj, instance, pos)); } /* * Memory functions */ /* Claim an area of memory. */ void * OF_claim(void *virt, size_t size, u_int align) { if (ofw_def_impl == NULL) return ((void *)-1); return (OFW_CLAIM(ofw_obj, virt, size, align)); } /* Release an area of memory. */ void OF_release(void *virt, size_t size) { if (ofw_def_impl == NULL) return; OFW_RELEASE(ofw_obj, virt, size); } /* * Control transfer functions */ /* Suspend and drop back to the Open Firmware interface. */ void OF_enter() { if (ofw_def_impl == NULL) return; OFW_ENTER(ofw_obj); } /* Shut down and drop back to the Open Firmware interface. */ void OF_exit() { if (ofw_def_impl == NULL) panic("OF_exit: Open Firmware not available"); /* Should not return */ OFW_EXIT(ofw_obj); for (;;) /* just in case */ ; }
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