diff options
Diffstat (limited to 'arch/powerpc/kernel/prom_parse.c')
| -rw-r--r-- | arch/powerpc/kernel/prom_parse.c | 924 |
1 files changed, 1 insertions, 923 deletions
diff --git a/arch/powerpc/kernel/prom_parse.c b/arch/powerpc/kernel/prom_parse.c index 8362620..88334af 100644 --- a/arch/powerpc/kernel/prom_parse.c +++ b/arch/powerpc/kernel/prom_parse.c @@ -6,232 +6,11 @@ #include <linux/module.h> #include <linux/ioport.h> #include <linux/etherdevice.h> +#include <linux/of_address.h> #include <asm/prom.h> #include <asm/pci-bridge.h> -#ifdef DEBUG -#define DBG(fmt...) do { printk(fmt); } while(0) -#else -#define DBG(fmt...) do { } while(0) -#endif - -#ifdef CONFIG_PPC64 -#define PRu64 "%lx" -#else -#define PRu64 "%llx" -#endif - -/* Max address size we deal with */ -#define OF_MAX_ADDR_CELLS 4 -#define OF_CHECK_COUNTS(na, ns) ((na) > 0 && (na) <= OF_MAX_ADDR_CELLS && \ - (ns) > 0) - -static struct of_bus *of_match_bus(struct device_node *np); -static int __of_address_to_resource(struct device_node *dev, - const u32 *addrp, u64 size, unsigned int flags, - struct resource *r); - - -/* Debug utility */ -#ifdef DEBUG -static void of_dump_addr(const char *s, const u32 *addr, int na) -{ - printk("%s", s); - while(na--) - printk(" %08x", *(addr++)); - printk("\n"); -} -#else -static void of_dump_addr(const char *s, const u32 *addr, int na) { } -#endif - - -/* Callbacks for bus specific translators */ -struct of_bus { - const char *name; - const char *addresses; - int (*match)(struct device_node *parent); - void (*count_cells)(struct device_node *child, - int *addrc, int *sizec); - u64 (*map)(u32 *addr, const u32 *range, - int na, int ns, int pna); - int (*translate)(u32 *addr, u64 offset, int na); - unsigned int (*get_flags)(const u32 *addr); -}; - - -/* - * Default translator (generic bus) - */ - -static void of_bus_default_count_cells(struct device_node *dev, - int *addrc, int *sizec) -{ - if (addrc) - *addrc = of_n_addr_cells(dev); - if (sizec) - *sizec = of_n_size_cells(dev); -} - -static u64 of_bus_default_map(u32 *addr, const u32 *range, - int na, int ns, int pna) -{ - u64 cp, s, da; - - cp = of_read_number(range, na); - s = of_read_number(range + na + pna, ns); - da = of_read_number(addr, na); - - DBG("OF: default map, cp="PRu64", s="PRu64", da="PRu64"\n", - cp, s, da); - - if (da < cp || da >= (cp + s)) - return OF_BAD_ADDR; - return da - cp; -} - -static int of_bus_default_translate(u32 *addr, u64 offset, int na) -{ - u64 a = of_read_number(addr, na); - memset(addr, 0, na * 4); - a += offset; - if (na > 1) - addr[na - 2] = a >> 32; - addr[na - 1] = a & 0xffffffffu; - - return 0; -} - -static unsigned int of_bus_default_get_flags(const u32 *addr) -{ - return IORESOURCE_MEM; -} - - #ifdef CONFIG_PCI -/* - * PCI bus specific translator - */ - -static int of_bus_pci_match(struct device_node *np) -{ - /* "vci" is for the /chaos bridge on 1st-gen PCI powermacs */ - return !strcmp(np->type, "pci") || !strcmp(np->type, "vci"); -} - -static void of_bus_pci_count_cells(struct device_node *np, - int *addrc, int *sizec) -{ - if (addrc) - *addrc = 3; - if (sizec) - *sizec = 2; -} - -static unsigned int of_bus_pci_get_flags(const u32 *addr) -{ - unsigned int flags = 0; - u32 w = addr[0]; - - switch((w >> 24) & 0x03) { - case 0x01: - flags |= IORESOURCE_IO; - break; - case 0x02: /* 32 bits */ - case 0x03: /* 64 bits */ - flags |= IORESOURCE_MEM; - break; - } - if (w & 0x40000000) - flags |= IORESOURCE_PREFETCH; - return flags; -} - -static u64 of_bus_pci_map(u32 *addr, const u32 *range, int na, int ns, int pna) -{ - u64 cp, s, da; - unsigned int af, rf; - - af = of_bus_pci_get_flags(addr); - rf = of_bus_pci_get_flags(range); - - /* Check address type match */ - if ((af ^ rf) & (IORESOURCE_MEM | IORESOURCE_IO)) - return OF_BAD_ADDR; - - /* Read address values, skipping high cell */ - cp = of_read_number(range + 1, na - 1); - s = of_read_number(range + na + pna, ns); - da = of_read_number(addr + 1, na - 1); - - DBG("OF: PCI map, cp="PRu64", s="PRu64", da="PRu64"\n", cp, s, da); - - if (da < cp || da >= (cp + s)) - return OF_BAD_ADDR; - return da - cp; -} - -static int of_bus_pci_translate(u32 *addr, u64 offset, int na) -{ - return of_bus_default_translate(addr + 1, offset, na - 1); -} - -const u32 *of_get_pci_address(struct device_node *dev, int bar_no, u64 *size, - unsigned int *flags) -{ - const u32 *prop; - unsigned int psize; - struct device_node *parent; - struct of_bus *bus; - int onesize, i, na, ns; - - /* Get parent & match bus type */ - parent = of_get_parent(dev); - if (parent == NULL) - return NULL; - bus = of_match_bus(parent); - if (strcmp(bus->name, "pci")) { - of_node_put(parent); - return NULL; - } - bus->count_cells(dev, &na, &ns); - of_node_put(parent); - if (!OF_CHECK_COUNTS(na, ns)) - return NULL; - - /* Get "reg" or "assigned-addresses" property */ - prop = of_get_property(dev, bus->addresses, &psize); - if (prop == NULL) - return NULL; - psize /= 4; - - onesize = na + ns; - for (i = 0; psize >= onesize; psize -= onesize, prop += onesize, i++) - if ((prop[0] & 0xff) == ((bar_no * 4) + PCI_BASE_ADDRESS_0)) { - if (size) - *size = of_read_number(prop + na, ns); - if (flags) - *flags = bus->get_flags(prop); - return prop; - } - return NULL; -} -EXPORT_SYMBOL(of_get_pci_address); - -int of_pci_address_to_resource(struct device_node *dev, int bar, - struct resource *r) -{ - const u32 *addrp; - u64 size; - unsigned int flags; - - addrp = of_get_pci_address(dev, bar, &size, &flags); - if (addrp == NULL) - return -EINVAL; - return __of_address_to_resource(dev, addrp, size, flags, r); -} -EXPORT_SYMBOL_GPL(of_pci_address_to_resource); - int of_irq_map_pci(struct pci_dev *pdev, struct of_irq *out_irq) { struct device_node *dn, *ppnode; @@ -313,345 +92,6 @@ int of_irq_map_pci(struct pci_dev *pdev, struct of_irq *out_irq) EXPORT_SYMBOL_GPL(of_irq_map_pci); #endif /* CONFIG_PCI */ -/* - * ISA bus specific translator - */ - -static int of_bus_isa_match(struct device_node *np) -{ - return !strcmp(np->name, "isa"); -} - -static void of_bus_isa_count_cells(struct device_node *child, - int *addrc, int *sizec) -{ - if (addrc) - *addrc = 2; - if (sizec) - *sizec = 1; -} - -static u64 of_bus_isa_map(u32 *addr, const u32 *range, int na, int ns, int pna) -{ - u64 cp, s, da; - - /* Check address type match */ - if ((addr[0] ^ range[0]) & 0x00000001) - return OF_BAD_ADDR; - - /* Read address values, skipping high cell */ - cp = of_read_number(range + 1, na - 1); - s = of_read_number(range + na + pna, ns); - da = of_read_number(addr + 1, na - 1); - - DBG("OF: ISA map, cp="PRu64", s="PRu64", da="PRu64"\n", cp, s, da); - - if (da < cp || da >= (cp + s)) - return OF_BAD_ADDR; - return da - cp; -} - -static int of_bus_isa_translate(u32 *addr, u64 offset, int na) -{ - return of_bus_default_translate(addr + 1, offset, na - 1); -} - -static unsigned int of_bus_isa_get_flags(const u32 *addr) -{ - unsigned int flags = 0; - u32 w = addr[0]; - - if (w & 1) - flags |= IORESOURCE_IO; - else - flags |= IORESOURCE_MEM; - return flags; -} - - -/* - * Array of bus specific translators - */ - -static struct of_bus of_busses[] = { -#ifdef CONFIG_PCI - /* PCI */ - { - .name = "pci", - .addresses = "assigned-addresses", - .match = of_bus_pci_match, - .count_cells = of_bus_pci_count_cells, - .map = of_bus_pci_map, - .translate = of_bus_pci_translate, - .get_flags = of_bus_pci_get_flags, - }, -#endif /* CONFIG_PCI */ - /* ISA */ - { - .name = "isa", - .addresses = "reg", - .match = of_bus_isa_match, - .count_cells = of_bus_isa_count_cells, - .map = of_bus_isa_map, - .translate = of_bus_isa_translate, - .get_flags = of_bus_isa_get_flags, - }, - /* Default */ - { - .name = "default", - .addresses = "reg", - .match = NULL, - .count_cells = of_bus_default_count_cells, - .map = of_bus_default_map, - .translate = of_bus_default_translate, - .get_flags = of_bus_default_get_flags, - }, -}; - -static struct of_bus *of_match_bus(struct device_node *np) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(of_busses); i ++) - if (!of_busses[i].match || of_busses[i].match(np)) - return &of_busses[i]; - BUG(); - return NULL; -} - -static int of_translate_one(struct device_node *parent, struct of_bus *bus, - struct of_bus *pbus, u32 *addr, - int na, int ns, int pna, const char *rprop) -{ - const u32 *ranges; - unsigned int rlen; - int rone; - u64 offset = OF_BAD_ADDR; - - /* Normally, an absence of a "ranges" property means we are - * crossing a non-translatable boundary, and thus the addresses - * below the current not cannot be converted to CPU physical ones. - * Unfortunately, while this is very clear in the spec, it's not - * what Apple understood, and they do have things like /uni-n or - * /ht nodes with no "ranges" property and a lot of perfectly - * useable mapped devices below them. Thus we treat the absence of - * "ranges" as equivalent to an empty "ranges" property which means - * a 1:1 translation at that level. It's up to the caller not to try - * to translate addresses that aren't supposed to be translated in - * the first place. --BenH. - */ - ranges = of_get_property(parent, rprop, &rlen); - if (ranges == NULL || rlen == 0) { - offset = of_read_number(addr, na); - memset(addr, 0, pna * 4); - DBG("OF: no ranges, 1:1 translation\n"); - goto finish; - } - - DBG("OF: walking ranges...\n"); - - /* Now walk through the ranges */ - rlen /= 4; - rone = na + pna + ns; - for (; rlen >= rone; rlen -= rone, ranges += rone) { - offset = bus->map(addr, ranges, na, ns, pna); - if (offset != OF_BAD_ADDR) - break; - } - if (offset == OF_BAD_ADDR) { - DBG("OF: not found !\n"); - return 1; - } - memcpy(addr, ranges + na, 4 * pna); - - finish: - of_dump_addr("OF: parent translation for:", addr, pna); - DBG("OF: with offset: "PRu64"\n", offset); - - /* Translate it into parent bus space */ - return pbus->translate(addr, offset, pna); -} - - -/* - * Translate an address from the device-tree into a CPU physical address, - * this walks up the tree and applies the various bus mappings on the - * way. - * - * Note: We consider that crossing any level with #size-cells == 0 to mean - * that translation is impossible (that is we are not dealing with a value - * that can be mapped to a cpu physical address). This is not really specified - * that way, but this is traditionally the way IBM at least do things - */ -u64 __of_translate_address(struct device_node *dev, const u32 *in_addr, - const char *rprop) -{ - struct device_node *parent = NULL; - struct of_bus *bus, *pbus; - u32 addr[OF_MAX_ADDR_CELLS]; - int na, ns, pna, pns; - u64 result = OF_BAD_ADDR; - - DBG("OF: ** translation for device %s **\n", dev->full_name); - - /* Increase refcount at current level */ - of_node_get(dev); - - /* Get parent & match bus type */ - parent = of_get_parent(dev); - if (parent == NULL) - goto bail; - bus = of_match_bus(parent); - - /* Cound address cells & copy address locally */ - bus->count_cells(dev, &na, &ns); - if (!OF_CHECK_COUNTS(na, ns)) { - printk(KERN_ERR "prom_parse: Bad cell count for %s\n", - dev->full_name); - goto bail; - } - memcpy(addr, in_addr, na * 4); - - DBG("OF: bus is %s (na=%d, ns=%d) on %s\n", - bus->name, na, ns, parent->full_name); - of_dump_addr("OF: translating address:", addr, na); - - /* Translate */ - for (;;) { - /* Switch to parent bus */ - of_node_put(dev); - dev = parent; - parent = of_get_parent(dev); - - /* If root, we have finished */ - if (parent == NULL) { - DBG("OF: reached root node\n"); - result = of_read_number(addr, na); - break; - } - - /* Get new parent bus and counts */ - pbus = of_match_bus(parent); - pbus->count_cells(dev, &pna, &pns); - if (!OF_CHECK_COUNTS(pna, pns)) { - printk(KERN_ERR "prom_parse: Bad cell count for %s\n", - dev->full_name); - break; - } - - DBG("OF: parent bus is %s (na=%d, ns=%d) on %s\n", - pbus->name, pna, pns, parent->full_name); - - /* Apply bus translation */ - if (of_translate_one(dev, bus, pbus, addr, na, ns, pna, rprop)) - break; - - /* Complete the move up one level */ - na = pna; - ns = pns; - bus = pbus; - - of_dump_addr("OF: one level translation:", addr, na); - } - bail: - of_node_put(parent); - of_node_put(dev); - - return result; -} - -u64 of_translate_address(struct device_node *dev, const u32 *in_addr) -{ - return __of_translate_address(dev, in_addr, "ranges"); -} -EXPORT_SYMBOL(of_translate_address); - -u64 of_translate_dma_address(struct device_node *dev, const u32 *in_addr) -{ - return __of_translate_address(dev, in_addr, "dma-ranges"); -} -EXPORT_SYMBOL(of_translate_dma_address); - -const u32 *of_get_address(struct device_node *dev, int index, u64 *size, - unsigned int *flags) -{ - const u32 *prop; - unsigned int psize; - struct device_node *parent; - struct of_bus *bus; - int onesize, i, na, ns; - - /* Get parent & match bus type */ - parent = of_get_parent(dev); - if (parent == NULL) - return NULL; - bus = of_match_bus(parent); - bus->count_cells(dev, &na, &ns); - of_node_put(parent); - if (!OF_CHECK_COUNTS(na, ns)) - return NULL; - - /* Get "reg" or "assigned-addresses" property */ - prop = of_get_property(dev, bus->addresses, &psize); - if (prop == NULL) - return NULL; - psize /= 4; - - onesize = na + ns; - for (i = 0; psize >= onesize; psize -= onesize, prop += onesize, i++) - if (i == index) { - if (size) - *size = of_read_number(prop + na, ns); - if (flags) - *flags = bus->get_flags(prop); - return prop; - } - return NULL; -} -EXPORT_SYMBOL(of_get_address); - -static int __of_address_to_resource(struct device_node *dev, const u32 *addrp, - u64 size, unsigned int flags, - struct resource *r) -{ - u64 taddr; - - if ((flags & (IORESOURCE_IO | IORESOURCE_MEM)) == 0) - return -EINVAL; - taddr = of_translate_address(dev, addrp); - if (taddr == OF_BAD_ADDR) - return -EINVAL; - memset(r, 0, sizeof(struct resource)); - if (flags & IORESOURCE_IO) { - unsigned long port; - port = pci_address_to_pio(taddr); - if (port == (unsigned long)-1) - return -EINVAL; - r->start = port; - r->end = port + size - 1; - } else { - r->start = taddr; - r->end = taddr + size - 1; - } - r->flags = flags; - r->name = dev->name; - return 0; -} - -int of_address_to_resource(struct device_node *dev, int index, - struct resource *r) -{ - const u32 *addrp; - u64 size; - unsigned int flags; - - addrp = of_get_address(dev, index, &size, &flags); - if (addrp == NULL) - return -EINVAL; - return __of_address_to_resource(dev, addrp, size, flags, r); -} -EXPORT_SYMBOL_GPL(of_address_to_resource); - void of_parse_dma_window(struct device_node *dn, const void *dma_window_prop, unsigned long *busno, unsigned long *phys, unsigned long *size) { @@ -678,342 +118,6 @@ void of_parse_dma_window(struct device_node *dn, const void *dma_window_prop, *size = of_read_number(dma_window, cells); } -/* - * Interrupt remapper - */ - -static unsigned int of_irq_workarounds; -static struct device_node *of_irq_dflt_pic; - -static struct device_node *of_irq_find_parent(struct device_node *child) -{ - struct device_node *p; - const phandle *parp; - - if (!of_node_get(child)) - return NULL; - - do { - parp = of_get_property(child, "interrupt-parent", NULL); - if (parp == NULL) - p = of_get_parent(child); - else { - if (of_irq_workarounds & OF_IMAP_NO_PHANDLE) - p = of_node_get(of_irq_dflt_pic); - else - p = of_find_node_by_phandle(*parp); - } - of_node_put(child); - child = p; - } while (p && of_get_property(p, "#interrupt-cells", NULL) == NULL); - - return p; -} - -/* This doesn't need to be called if you don't have any special workaround - * flags to pass - */ -void of_irq_map_init(unsigned int flags) -{ - of_irq_workarounds = flags; - - /* OldWorld, don't bother looking at other things */ - if (flags & OF_IMAP_OLDWORLD_MAC) - return; - - /* If we don't have phandles, let's try to locate a default interrupt - * controller (happens when booting with BootX). We do a first match - * here, hopefully, that only ever happens on machines with one - * controller. - */ - if (flags & OF_IMAP_NO_PHANDLE) { - struct device_node *np; - - for_each_node_with_property(np, "interrupt-controller") { - /* Skip /chosen/interrupt-controller */ - if (strcmp(np->name, "chosen") == 0) - continue; - /* It seems like at least one person on this planet wants - * to use BootX on a machine with an AppleKiwi controller - * which happens to pretend to be an interrupt - * controller too. - */ - if (strcmp(np->name, "AppleKiwi") == 0) - continue; - /* I think we found one ! */ - of_irq_dflt_pic = np; - break; - } - } - -} - -int of_irq_map_raw(struct device_node *parent, const u32 *intspec, u32 ointsize, - const u32 *addr, struct of_irq *out_irq) -{ - struct device_node *ipar, *tnode, *old = NULL, *newpar = NULL; - const u32 *tmp, *imap, *imask; - u32 intsize = 1, addrsize, newintsize = 0, newaddrsize = 0; - int imaplen, match, i; - - DBG("of_irq_map_raw: par=%s,intspec=[0x%08x 0x%08x...],ointsize=%d\n", - parent->full_name, intspec[0], intspec[1], ointsize); - - ipar = of_node_get(parent); - - /* First get the #interrupt-cells property of the current cursor - * that tells us how to interpret the passed-in intspec. If there - * is none, we are nice and just walk up the tree - */ - do { - tmp = of_get_property(ipar, "#interrupt-cells", NULL); - if (tmp != NULL) { - intsize = *tmp; - break; - } - tnode = ipar; - ipar = of_irq_find_parent(ipar); - of_node_put(tnode); - } while (ipar); - if (ipar == NULL) { - DBG(" -> no parent found !\n"); - goto fail; - } - - DBG("of_irq_map_raw: ipar=%s, size=%d\n", ipar->full_name, intsize); - - if (ointsize != intsize) - return -EINVAL; - - /* Look for this #address-cells. We have to implement the old linux - * trick of looking for the parent here as some device-trees rely on it - */ - old = of_node_get(ipar); - do { - tmp = of_get_property(old, "#address-cells", NULL); - tnode = of_get_parent(old); - of_node_put(old); - old = tnode; - } while(old && tmp == NULL); - of_node_put(old); - old = NULL; - addrsize = (tmp == NULL) ? 2 : *tmp; - - DBG(" -> addrsize=%d\n", addrsize); - - /* Now start the actual "proper" walk of the interrupt tree */ - while (ipar != NULL) { - /* Now check if cursor is an interrupt-controller and if it is - * then we are done - */ - if (of_get_property(ipar, "interrupt-controller", NULL) != - NULL) { - DBG(" -> got it !\n"); - memcpy(out_irq->specifier, intspec, - intsize * sizeof(u32)); - out_irq->size = intsize; - out_irq->controller = ipar; - of_node_put(old); - return 0; - } - - /* Now look for an interrupt-map */ - imap = of_get_property(ipar, "interrupt-map", &imaplen); - /* No interrupt map, check for an interrupt parent */ - if (imap == NULL) { - DBG(" -> no map, getting parent\n"); - newpar = of_irq_find_parent(ipar); - goto skiplevel; - } - imaplen /= sizeof(u32); - - /* Look for a mask */ - imask = of_get_property(ipar, "interrupt-map-mask", NULL); - - /* If we were passed no "reg" property and we attempt to parse - * an interrupt-map, then #address-cells must be 0. - * Fail if it's not. - */ - if (addr == NULL && addrsize != 0) { - DBG(" -> no reg passed in when needed !\n"); - goto fail; - } - - /* Parse interrupt-map */ - match = 0; - while (imaplen > (addrsize + intsize + 1) && !match) { - /* Compare specifiers */ - match = 1; - for (i = 0; i < addrsize && match; ++i) { - u32 mask = imask ? imask[i] : 0xffffffffu; - match = ((addr[i] ^ imap[i]) & mask) == 0; - } - for (; i < (addrsize + intsize) && match; ++i) { - u32 mask = imask ? imask[i] : 0xffffffffu; - match = - ((intspec[i-addrsize] ^ imap[i]) & mask) == 0; - } - imap += addrsize + intsize; - imaplen -= addrsize + intsize; - - DBG(" -> match=%d (imaplen=%d)\n", match, imaplen); - - /* Get the interrupt parent */ - if (of_irq_workarounds & OF_IMAP_NO_PHANDLE) - newpar = of_node_get(of_irq_dflt_pic); - else - newpar = of_find_node_by_phandle((phandle)*imap); - imap++; - --imaplen; - - /* Check if not found */ - if (newpar == NULL) { - DBG(" -> imap parent not found !\n"); - goto fail; - } - - /* Get #interrupt-cells and #address-cells of new - * parent - */ - tmp = of_get_property(newpar, "#interrupt-cells", NULL); - if (tmp == NULL) { - DBG(" -> parent lacks #interrupt-cells !\n"); - goto fail; - } - newintsize = *tmp; - tmp = of_get_property(newpar, "#address-cells", NULL); - newaddrsize = (tmp == NULL) ? 0 : *tmp; - - DBG(" -> newintsize=%d, newaddrsize=%d\n", - newintsize, newaddrsize); - - /* Check for malformed properties */ - if (imaplen < (newaddrsize + newintsize)) - goto fail; - - imap += newaddrsize + newintsize; - imaplen -= newaddrsize + newintsize; - - DBG(" -> imaplen=%d\n", imaplen); - } - if (!match) - goto fail; - - of_node_put(old); - old = of_node_get(newpar); - addrsize = newaddrsize; - intsize = newintsize; - intspec = imap - intsize; - addr = intspec - addrsize; - - skiplevel: - /* Iterate again with new parent */ - DBG(" -> new parent: %s\n", newpar ? newpar->full_name : "<>"); - of_node_put(ipar); - ipar = newpar; - newpar = NULL; - } - fail: - of_node_put(ipar); - of_node_put(old); - of_node_put(newpar); - - return -EINVAL; -} -EXPORT_SYMBOL_GPL(of_irq_map_raw); - -#if defined(CONFIG_PPC_PMAC) && defined(CONFIG_PPC32) -static int of_irq_map_oldworld(struct device_node *device, int index, - struct of_irq *out_irq) -{ - const u32 *ints = NULL; - int intlen; - - /* - * Old machines just have a list of interrupt numbers - * and no interrupt-controller nodes. We also have dodgy - * cases where the APPL,interrupts property is completely - * missing behind pci-pci bridges and we have to get it - * from the parent (the bridge itself, as apple just wired - * everything together on these) - */ - while (device) { - ints = of_get_property(device, "AAPL,interrupts", &intlen); - if (ints != NULL) - break; - device = device->parent; - if (device && strcmp(device->type, "pci") != 0) - break; - } - if (ints == NULL) - return -EINVAL; - intlen /= sizeof(u32); - - if (index >= intlen) - return -EINVAL; - - out_irq->controller = NULL; - out_irq->specifier[0] = ints[index]; - out_irq->size = 1; - - return 0; -} -#else /* defined(CONFIG_PPC_PMAC) && defined(CONFIG_PPC32) */ -static int of_irq_map_oldworld(struct device_node *device, int index, - struct of_irq *out_irq) -{ - return -EINVAL; -} -#endif /* !(defined(CONFIG_PPC_PMAC) && defined(CONFIG_PPC32)) */ - -int of_irq_map_one(struct device_node *device, int index, struct of_irq *out_irq) -{ - struct device_node *p; - const u32 *intspec, *tmp, *addr; - u32 intsize, intlen; - int res = -EINVAL; - - DBG("of_irq_map_one: dev=%s, index=%d\n", device->full_name, index); - - /* OldWorld mac stuff is "special", handle out of line */ - if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC) - return of_irq_map_oldworld(device, index, out_irq); - - /* Get the interrupts property */ - intspec = of_get_property(device, "interrupts", &intlen); - if (intspec == NULL) - return -EINVAL; - intlen /= sizeof(u32); - - /* Get the reg property (if any) */ - addr = of_get_property(device, "reg", NULL); - - /* Look for the interrupt parent. */ - p = of_irq_find_parent(device); - if (p == NULL) - return -EINVAL; - - /* Get size of interrupt specifier */ - tmp = of_get_property(p, "#interrupt-cells", NULL); - if (tmp == NULL) - goto out; - intsize = *tmp; - - DBG(" intsize=%d intlen=%d\n", intsize, intlen); - - /* Check index */ - if ((index + 1) * intsize > intlen) - goto out; - - /* Get new specifier and map it */ - res = of_irq_map_raw(p, intspec + index * intsize, intsize, - addr, out_irq); -out: - of_node_put(p); - return res; -} -EXPORT_SYMBOL_GPL(of_irq_map_one); - /** * Search the device tree for the best MAC address to use. 'mac-address' is * checked first, because that is supposed to contain to "most recent" MAC @@ -1051,29 +155,3 @@ const void *of_get_mac_address(struct device_node *np) return NULL; } EXPORT_SYMBOL(of_get_mac_address); - -int of_irq_to_resource(struct device_node *dev, int index, struct resource *r) -{ - int irq = irq_of_parse_and_map(dev, index); - - /* Only dereference the resource if both the - * resource and the irq are valid. */ - if (r && irq != NO_IRQ) { - r->start = r->end = irq; - r->flags = IORESOURCE_IRQ; - } - - return irq; -} -EXPORT_SYMBOL_GPL(of_irq_to_resource); - -void __iomem *of_iomap(struct device_node *np, int index) -{ - struct resource res; - - if (of_address_to_resource(np, index, &res)) - return NULL; - - return ioremap(res.start, 1 + res.end - res.start); -} -EXPORT_SYMBOL(of_iomap); |
