/*- * Copyright (c) 2001 by Thomas Moestl . * Copyright (c) 2005 by Marius Strobl . * 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 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 OR CONTRIBUTORS 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 __FBSDID("$FreeBSD$"); /* * Some Open Firmware helper functions that are likely machine dependent. */ #include #include #include #include #include #include #include #include #include #include void OF_getetheraddr(device_t dev, u_char *addr) { char buf[sizeof("true")]; phandle_t node; struct idprom idp; if ((node = OF_finddevice("/options")) > 0 && OF_getprop(node, "local-mac-address?", buf, sizeof(buf)) > 0) { buf[sizeof(buf) - 1] = '\0'; if (strcmp(buf, "true") == 0 && (node = ofw_bus_get_node(dev)) > 0 && OF_getprop(node, "local-mac-address", addr, ETHER_ADDR_LEN) == ETHER_ADDR_LEN) return; } node = OF_peer(0); if (node <= 0 || OF_getprop(node, "idprom", &idp, sizeof(idp)) == -1) panic("Could not determine the machine ethernet address"); bcopy(&idp.id_ether, addr, ETHER_ADDR_LEN); } static __inline uint32_t phys_hi_mask_space(const char *bus, uint32_t phys_hi) { uint32_t space; space = phys_hi; if (strcmp(bus, "ebus") == 0 || strcmp(bus, "isa") == 0) space &= 0x1; else if (strcmp(bus, "pci") == 0) space &= OFW_PCI_PHYS_HI_SPACEMASK; /* The phys.hi cells of the other busses only contain space bits. */ return (space); } /* * Return the physical address and the bus space to use for a node * referenced by its package handle and the index of the register bank * to decode. Intended to be used to together with sparc64_fake_bustag() * by console drivers in early boot only. * Works by mapping the address of the node's bank given in the address * space of its parent upward in the device tree at each bridge along the * path. * Currently only really deals with max. 64-bit addresses, i.e. addresses * consisting of max. 2 phys cells (phys.hi and phys.lo). If we encounter * a 3 phys cells address (as with PCI addresses) we assume phys.hi can * be ignored except for the space bits (generally contained in phys.hi) * and treat phys.mid as phys.hi. */ int OF_decode_addr(phandle_t node, int bank, int *space, bus_addr_t *addr) { char name[32]; uint64_t cend, cstart, end, phys, sz, start; pcell_t addrc, szc, paddrc; phandle_t bus, lbus, pbus; uint32_t banks[10 * 5]; /* 10 PCI banks */ uint32_t cspace, spc; int i, j, nbank; /* * In general the addresses are contained in the "reg" property * of a node. The first address in the "reg" property of a PCI * node however is the address of its configuration registers in * the configuration space of the host bridge. Additional entries * denote the memory and I/O addresses. For relocatable addresses * the "reg" property contains the BAR, for non-relocatable * addresses it contains the absolute PCI address. The PCI-only * "assigned-addresses" property however always contains the * absolute PCI addresses. * The "assigned-addresses" and "reg" properties are arrays of * address structures consisting of #address-cells 32-bit phys * cells and #size-cells 32-bit size cells. If a parent lacks * the "#address-cells" or "#size-cells" property the default * for #address-cells to use is 2 and for #size-cells 1. */ bus = OF_parent(node); if (bus == 0) return (ENXIO); if (OF_getprop(bus, "name", name, sizeof(name)) == -1) return (ENXIO); name[sizeof(name) - 1] = '\0'; if (OF_getprop(bus, "#address-cells", &addrc, sizeof(addrc)) == -1) addrc = 2; if (OF_getprop(bus, "#size-cells", &szc, sizeof(szc)) == -1) szc = 1; if (addrc < 2 || addrc > 3 || szc < 1 || szc > 2) return (ENXIO); if (strcmp(name, "pci") == 0) { if (addrc > 3) return (ENXIO); nbank = OF_getprop(node, "assigned-addresses", &banks, sizeof(banks)); } else { if (addrc > 2) return (ENXIO); nbank = OF_getprop(node, "reg", &banks, sizeof(banks)); } if (nbank == -1) return (ENXIO); nbank /= sizeof(banks[0]) * (addrc + szc); if (bank < 0 || bank > nbank - 1) return (ENXIO); phys = 0; for (i = 0; i < MIN(2, addrc); i++) phys |= (uint64_t)banks[(addrc + szc) * bank + addrc - 2 + i] << 32 * (MIN(2, addrc) - i - 1); sz = 0; for (i = 0; i < szc; i++) sz |= (uint64_t)banks[(addrc + szc) * bank + addrc + i] << 32 * (szc - i - 1); start = phys; end = phys + sz - 1; spc = phys_hi_mask_space(name, banks[(addrc + szc) * bank]); /* * Map upward in the device tree at every bridge we encounter * using their "ranges" properties. * The "ranges" property of a bridge is an array of a structure * consisting of that bridge's #address-cells 32-bit child-phys * cells, its parent bridge #address-cells 32-bit parent-phys * cells and that bridge's #size-cells 32-bit size cells. * If a bridge doesn't have a "ranges" property no mapping is * necessary at that bridge. */ cspace = 0; lbus = bus; while ((pbus = OF_parent(bus)) != 0) { if (OF_getprop(pbus, "#address-cells", &paddrc, sizeof(paddrc)) == -1) paddrc = 2; if (paddrc < 2 || paddrc > 3) return (ENXIO); nbank = OF_getprop(bus, "ranges", &banks, sizeof(banks)); if (nbank == -1) { if (OF_getprop(pbus, "name", name, sizeof(name)) == -1) return (ENXIO); name[sizeof(name) - 1] = '\0'; goto skip; } if (lbus != bus) { if (OF_getprop(bus, "#size-cells", &szc, sizeof(szc)) == -1) szc = 1; if (szc < 1 || szc > 2) return (ENXIO); } nbank /= sizeof(banks[0]) * (addrc + paddrc + szc); for (i = 0; i < nbank; i++) { cspace = phys_hi_mask_space(name, banks[(addrc + paddrc + szc) * i]); if (cspace != spc) continue; phys = 0; for (j = 0; j < MIN(2, addrc); j++) phys |= (uint64_t)banks[ (addrc + paddrc + szc) * i + addrc - 2 + j] << 32 * (MIN(2, addrc) - j - 1); sz = 0; for (j = 0; j < szc; j++) sz |= (uint64_t)banks[ (addrc + paddrc + szc) * i + addrc + paddrc + j] << 32 * (szc - j - 1); cstart = phys; cend = phys + sz - 1; if (start < cstart || start > cend) continue; if (end < cstart || end > cend) return (ENXIO); phys = 0; for (j = 0; j < MIN(2, paddrc); j++) phys |= (uint64_t)banks[ (addrc + paddrc + szc) * i + addrc + paddrc - 2 + j] << 32 * (MIN(2, paddrc) - j - 1); start += phys - cstart; end += phys - cstart; if (OF_getprop(pbus, "name", name, sizeof(name)) == -1) return (ENXIO); name[sizeof(name) - 1] = '\0'; spc = phys_hi_mask_space(name, banks[(addrc + paddrc + szc) * i + addrc]); break; } if (i == nbank) return (ENXIO); skip: addrc = paddrc; lbus = bus; bus = pbus; } /* Done with mapping. Return the bus space as used by FreeBSD. */ *addr = start; if (OF_parent(lbus) == 0) { *space = NEXUS_BUS_SPACE; return (0); } if (OF_getprop(lbus, "name", name, sizeof(name)) == -1) return (ENXIO); name[sizeof(name) - 1] = '\0'; if (strcmp(name, "central") == 0 || strcmp(name, "upa") == 0) { *space = NEXUS_BUS_SPACE; return (0); } else if (strcmp(name, "pci") == 0) { switch (cspace) { case OFW_PCI_PHYS_HI_SPACE_IO: *space = PCI_IO_BUS_SPACE; return (0); case OFW_PCI_PHYS_HI_SPACE_MEM32: *space = PCI_MEMORY_BUS_SPACE; return (0); } } else if (strcmp(name, "sbus") == 0) { *space = SBUS_BUS_SPACE; return (0); } return (ENXIO); }