|
@@ -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);
|