Date: Tue, 8 Jul 2003 22:21:57 -0700 (PDT) From: Marcel Moolenaar <marcel@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 34226 for review Message-ID: <200307090521.h695Lvip069462@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=34226 Change 34226 by marcel@marcel_nfs on 2003/07/08 22:21:21 Add OF_decode_addr(). This function traverses the OF device tree and translates an unit address to a physical address for use as bus handle. There's no header in which we can put the prototype without breaking the build. It's not important... Obtained from: tmm@ Affected files ... .. //depot/projects/uart/sparc64/sparc64/ofw_machdep.c#2 edit Differences ... ==== //depot/projects/uart/sparc64/sparc64/ofw_machdep.c#2 (text+ko) ==== @@ -36,9 +36,17 @@ #include <ofw/openfirm.h> +#include <machine/bus.h> #include <machine/idprom.h> #include <machine/ofw_machdep.h> +#include <machine/ofw_upa.h> +#include <machine/resource.h> +#include <sparc64/pci/ofw_pci.h> +#include <sparc64/isa/ofw_isa.h> + +int OF_decode_addr(phandle_t node, int *space, bus_addr_t *addr); + void OF_getetheraddr(device_t dev, u_char *addr) { @@ -50,3 +58,61 @@ panic("Could not determine the machine ethernet address"); bcopy(&idp.id_ether, addr, ETHER_ADDR_LEN); } + +int +OF_decode_addr(phandle_t node, int *space, bus_addr_t *addr) +{ + char name[32]; + struct isa_ranges ir[4]; + struct isa_regs reg; + struct upa_ranges ur[4]; + phandle_t bus, parent, pbus; + u_long child, dummy, phys; + int cs, i, rsz, type; + + parent = OF_parent(node); + if (parent == NULL) + return (ENXIO); + rsz = OF_getprop(parent, "ranges", ir, sizeof(ir)); + if (rsz == -1 || OF_getprop(node, "reg", ®, sizeof(reg)) == -1) + return (ENXIO); + phys = ISA_REG_PHYS(®); + dummy = phys + 1; + type = ofw_isa_map_iorange(ir, rsz / sizeof(*ir), &phys, &dummy); + if (type == SYS_RES_MEMORY) { + cs = PCI_CS_MEM32; + *space = PCI_MEMORY_BUS_SPACE; + } else { + cs = PCI_CS_IO; + *space = PCI_IO_BUS_SPACE; + } + bus = OF_parent(parent); + if (OF_getprop(bus, "name", name, sizeof(name)) == -1) + return (ENXIO); + name[sizeof(name) - 1] = '\0'; + if (strcmp(name, "pci") != 0) + return (ENXIO); + + /* Find the topmost PCI node (the host bridge) */ + while ((pbus = OF_parent(bus)) != 0) { + if (OF_getprop(pbus, "name", name, sizeof(name)) != -1) { + name[sizeof(name) - 1] = '\0'; + if (strcmp(name, "pci") != 0) + break; + } + bus = pbus; + } + if (pbus == 0) + return (ENXIO); + if ((rsz = OF_getprop(bus, "ranges", ur, sizeof(ur))) == -1) + return (ENXIO); + for (i = 0; i < (rsz / sizeof(ur[0])); i++) { + child = UPA_RANGE_CHILD(&ur[i]); + if (UPA_RANGE_CS(&ur[i]) == cs && phys >= child && + phys - child < UPA_RANGE_SIZE(&ur[i])) { + *addr = UPA_RANGE_PHYS(&ur[i]) + phys; + return (0); + } + } + return (ENXIO); +}help
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