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sparc: move of_device common code to of_device_common
This patch moves code common to of_device_32.c and of_device_64.c into of_device_common.h and of_device_common.c. The only functional difference is in sparc32 where of_bus_default_map is used in place of of_bus_sbus_map because they are equivelent. There is still room for further code consolidation with some minor refactoring. Boot tested on sparc32 and compile tested on sparc64. Signed-off-by: Robert Reif <reif@earthlink.net> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
d69864158e
commit
c9f5b7e77c
@ -37,6 +37,7 @@ obj-y += una_asm_$(BITS).o
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obj-$(CONFIG_SPARC32) += muldiv.o
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obj-y += prom_common.o
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obj-y += prom_$(BITS).o
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obj-y += of_device_common.o
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obj-y += of_device_$(BITS).o
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obj-$(CONFIG_SPARC64) += prom_irqtrans.o
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@ -6,159 +6,11 @@
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#include <linux/mod_devicetable.h>
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#include <linux/slab.h>
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#include <linux/errno.h>
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#include <linux/irq.h>
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#include <linux/of_device.h>
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#include <linux/of_platform.h>
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static int node_match(struct device *dev, void *data)
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{
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struct of_device *op = to_of_device(dev);
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struct device_node *dp = data;
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return (op->node == dp);
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}
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struct of_device *of_find_device_by_node(struct device_node *dp)
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{
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struct device *dev = bus_find_device(&of_platform_bus_type, NULL,
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dp, node_match);
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if (dev)
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return to_of_device(dev);
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return NULL;
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}
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EXPORT_SYMBOL(of_find_device_by_node);
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unsigned int irq_of_parse_and_map(struct device_node *node, int index)
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{
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struct of_device *op = of_find_device_by_node(node);
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if (!op || index >= op->num_irqs)
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return 0;
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return op->irqs[index];
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}
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EXPORT_SYMBOL(irq_of_parse_and_map);
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/* Take the archdata values for IOMMU, STC, and HOSTDATA found in
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* BUS and propagate to all child of_device objects.
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*/
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void of_propagate_archdata(struct of_device *bus)
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{
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struct dev_archdata *bus_sd = &bus->dev.archdata;
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struct device_node *bus_dp = bus->node;
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struct device_node *dp;
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for (dp = bus_dp->child; dp; dp = dp->sibling) {
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struct of_device *op = of_find_device_by_node(dp);
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op->dev.archdata.iommu = bus_sd->iommu;
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op->dev.archdata.stc = bus_sd->stc;
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op->dev.archdata.host_controller = bus_sd->host_controller;
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op->dev.archdata.numa_node = bus_sd->numa_node;
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if (dp->child)
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of_propagate_archdata(op);
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}
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}
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struct bus_type of_platform_bus_type;
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EXPORT_SYMBOL(of_platform_bus_type);
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static inline u64 of_read_addr(const u32 *cell, int size)
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{
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u64 r = 0;
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while (size--)
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r = (r << 32) | *(cell++);
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return r;
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}
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static void __init get_cells(struct device_node *dp,
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int *addrc, int *sizec)
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{
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if (addrc)
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*addrc = of_n_addr_cells(dp);
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if (sizec)
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*sizec = of_n_size_cells(dp);
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}
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/* Max address size we deal with */
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#define OF_MAX_ADDR_CELLS 4
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struct of_bus {
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const char *name;
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const char *addr_prop_name;
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int (*match)(struct device_node *parent);
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void (*count_cells)(struct device_node *child,
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int *addrc, int *sizec);
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int (*map)(u32 *addr, const u32 *range,
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int na, int ns, int pna);
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unsigned long (*get_flags)(const u32 *addr, unsigned long);
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};
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/*
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* Default translator (generic bus)
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*/
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static void of_bus_default_count_cells(struct device_node *dev,
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int *addrc, int *sizec)
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{
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get_cells(dev, addrc, sizec);
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}
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/* Make sure the least significant 64-bits are in-range. Even
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* for 3 or 4 cell values it is a good enough approximation.
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*/
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static int of_out_of_range(const u32 *addr, const u32 *base,
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const u32 *size, int na, int ns)
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{
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u64 a = of_read_addr(addr, na);
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u64 b = of_read_addr(base, na);
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if (a < b)
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return 1;
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b += of_read_addr(size, ns);
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if (a >= b)
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return 1;
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return 0;
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}
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static int of_bus_default_map(u32 *addr, const u32 *range,
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int na, int ns, int pna)
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{
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u32 result[OF_MAX_ADDR_CELLS];
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int i;
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if (ns > 2) {
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printk("of_device: Cannot handle size cells (%d) > 2.", ns);
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return -EINVAL;
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}
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if (of_out_of_range(addr, range, range + na + pna, na, ns))
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return -EINVAL;
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/* Start with the parent range base. */
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memcpy(result, range + na, pna * 4);
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/* Add in the child address offset. */
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for (i = 0; i < na; i++)
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result[pna - 1 - i] +=
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(addr[na - 1 - i] -
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range[na - 1 - i]);
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memcpy(addr, result, pna * 4);
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return 0;
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}
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static unsigned long of_bus_default_get_flags(const u32 *addr, unsigned long flags)
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{
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if (flags)
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return flags;
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return IORESOURCE_MEM;
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}
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#include "of_device_common.h"
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/*
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* PCI bus specific translator
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@ -240,47 +92,6 @@ static unsigned long of_bus_pci_get_flags(const u32 *addr, unsigned long flags)
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return flags;
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}
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/*
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* SBUS bus specific translator
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*/
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static int of_bus_sbus_match(struct device_node *np)
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{
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struct device_node *dp = np;
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while (dp) {
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if (!strcmp(dp->name, "sbus") ||
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!strcmp(dp->name, "sbi"))
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return 1;
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/* Have a look at use_1to1_mapping(). We're trying
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* to match SBUS if that's the top-level bus and we
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* don't have some intervening real bus that provides
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* ranges based translations.
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*/
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if (of_find_property(dp, "ranges", NULL) != NULL)
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break;
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dp = dp->parent;
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}
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return 0;
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}
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static void of_bus_sbus_count_cells(struct device_node *child,
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int *addrc, int *sizec)
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{
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if (addrc)
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*addrc = 2;
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if (sizec)
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*sizec = 1;
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}
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static int of_bus_sbus_map(u32 *addr, const u32 *range, int na, int ns, int pna)
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{
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return of_bus_default_map(addr, range, na, ns, pna);
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}
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static unsigned long of_bus_sbus_get_flags(const u32 *addr, unsigned long flags)
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{
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return IORESOURCE_MEM;
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@ -307,7 +118,7 @@ static struct of_bus of_busses[] = {
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.addr_prop_name = "reg",
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.match = of_bus_sbus_match,
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.count_cells = of_bus_sbus_count_cells,
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.map = of_bus_sbus_map,
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.map = of_bus_default_map,
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.get_flags = of_bus_sbus_get_flags,
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},
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/* Default */
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@ -10,6 +10,8 @@
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#include <linux/of_device.h>
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#include <linux/of_platform.h>
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#include "of_device_common.h"
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void __iomem *of_ioremap(struct resource *res, unsigned long offset, unsigned long size, char *name)
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{
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unsigned long ret = res->start + offset;
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@ -35,156 +37,6 @@ void of_iounmap(struct resource *res, void __iomem *base, unsigned long size)
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}
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EXPORT_SYMBOL(of_iounmap);
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static int node_match(struct device *dev, void *data)
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{
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struct of_device *op = to_of_device(dev);
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struct device_node *dp = data;
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return (op->node == dp);
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}
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struct of_device *of_find_device_by_node(struct device_node *dp)
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{
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struct device *dev = bus_find_device(&of_platform_bus_type, NULL,
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dp, node_match);
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if (dev)
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return to_of_device(dev);
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return NULL;
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}
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EXPORT_SYMBOL(of_find_device_by_node);
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unsigned int irq_of_parse_and_map(struct device_node *node, int index)
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{
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struct of_device *op = of_find_device_by_node(node);
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if (!op || index >= op->num_irqs)
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return 0;
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return op->irqs[index];
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}
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EXPORT_SYMBOL(irq_of_parse_and_map);
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/* Take the archdata values for IOMMU, STC, and HOSTDATA found in
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* BUS and propagate to all child of_device objects.
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*/
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void of_propagate_archdata(struct of_device *bus)
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{
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struct dev_archdata *bus_sd = &bus->dev.archdata;
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struct device_node *bus_dp = bus->node;
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struct device_node *dp;
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for (dp = bus_dp->child; dp; dp = dp->sibling) {
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struct of_device *op = of_find_device_by_node(dp);
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op->dev.archdata.iommu = bus_sd->iommu;
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op->dev.archdata.stc = bus_sd->stc;
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op->dev.archdata.host_controller = bus_sd->host_controller;
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op->dev.archdata.numa_node = bus_sd->numa_node;
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if (dp->child)
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of_propagate_archdata(op);
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}
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}
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struct bus_type of_platform_bus_type;
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EXPORT_SYMBOL(of_platform_bus_type);
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static inline u64 of_read_addr(const u32 *cell, int size)
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{
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u64 r = 0;
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while (size--)
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r = (r << 32) | *(cell++);
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return r;
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}
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static void get_cells(struct device_node *dp, int *addrc, int *sizec)
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{
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if (addrc)
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*addrc = of_n_addr_cells(dp);
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if (sizec)
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*sizec = of_n_size_cells(dp);
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}
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/* Max address size we deal with */
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#define OF_MAX_ADDR_CELLS 4
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struct of_bus {
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const char *name;
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const char *addr_prop_name;
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int (*match)(struct device_node *parent);
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void (*count_cells)(struct device_node *child,
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int *addrc, int *sizec);
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int (*map)(u32 *addr, const u32 *range,
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int na, int ns, int pna);
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unsigned long (*get_flags)(const u32 *addr, unsigned long);
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};
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/*
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* Default translator (generic bus)
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*/
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static void of_bus_default_count_cells(struct device_node *dev,
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int *addrc, int *sizec)
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{
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get_cells(dev, addrc, sizec);
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}
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/* Make sure the least significant 64-bits are in-range. Even
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* for 3 or 4 cell values it is a good enough approximation.
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*/
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static int of_out_of_range(const u32 *addr, const u32 *base,
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const u32 *size, int na, int ns)
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{
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u64 a = of_read_addr(addr, na);
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u64 b = of_read_addr(base, na);
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if (a < b)
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return 1;
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b += of_read_addr(size, ns);
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if (a >= b)
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return 1;
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return 0;
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}
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static int of_bus_default_map(u32 *addr, const u32 *range,
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int na, int ns, int pna)
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{
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u32 result[OF_MAX_ADDR_CELLS];
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int i;
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if (ns > 2) {
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printk("of_device: Cannot handle size cells (%d) > 2.", ns);
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return -EINVAL;
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}
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if (of_out_of_range(addr, range, range + na + pna, na, ns))
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return -EINVAL;
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/* Start with the parent range base. */
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memcpy(result, range + na, pna * 4);
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/* Add in the child address offset. */
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for (i = 0; i < na; i++)
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result[pna - 1 - i] +=
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(addr[na - 1 - i] -
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range[na - 1 - i]);
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memcpy(addr, result, pna * 4);
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return 0;
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}
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static unsigned long of_bus_default_get_flags(const u32 *addr, unsigned long flags)
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{
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if (flags)
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return flags;
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return IORESOURCE_MEM;
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}
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/*
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* PCI bus specific translator
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*/
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@ -294,42 +146,6 @@ static unsigned long of_bus_pci_get_flags(const u32 *addr, unsigned long flags)
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return flags;
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}
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/*
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* SBUS bus specific translator
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*/
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static int of_bus_sbus_match(struct device_node *np)
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{
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struct device_node *dp = np;
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while (dp) {
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if (!strcmp(dp->name, "sbus") ||
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!strcmp(dp->name, "sbi"))
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return 1;
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/* Have a look at use_1to1_mapping(). We're trying
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* to match SBUS if that's the top-level bus and we
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* don't have some intervening real bus that provides
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* ranges based translations.
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*/
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if (of_find_property(dp, "ranges", NULL) != NULL)
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break;
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dp = dp->parent;
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}
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return 0;
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}
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static void of_bus_sbus_count_cells(struct device_node *child,
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int *addrc, int *sizec)
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{
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if (addrc)
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*addrc = 2;
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if (sizec)
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*sizec = 1;
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}
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/*
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* FHC/Central bus specific translator.
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*
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174
arch/sparc/kernel/of_device_common.c
Normal file
174
arch/sparc/kernel/of_device_common.c
Normal file
@ -0,0 +1,174 @@
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#include <linux/string.h>
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#include <linux/kernel.h>
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#include <linux/of.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/mod_devicetable.h>
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#include <linux/slab.h>
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#include <linux/errno.h>
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#include <linux/irq.h>
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#include <linux/of_device.h>
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#include <linux/of_platform.h>
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#include "of_device_common.h"
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static int node_match(struct device *dev, void *data)
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{
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struct of_device *op = to_of_device(dev);
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struct device_node *dp = data;
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return (op->node == dp);
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}
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struct of_device *of_find_device_by_node(struct device_node *dp)
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{
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struct device *dev = bus_find_device(&of_platform_bus_type, NULL,
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dp, node_match);
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if (dev)
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return to_of_device(dev);
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return NULL;
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}
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EXPORT_SYMBOL(of_find_device_by_node);
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unsigned int irq_of_parse_and_map(struct device_node *node, int index)
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{
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struct of_device *op = of_find_device_by_node(node);
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if (!op || index >= op->num_irqs)
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return 0;
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return op->irqs[index];
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}
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EXPORT_SYMBOL(irq_of_parse_and_map);
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/* Take the archdata values for IOMMU, STC, and HOSTDATA found in
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* BUS and propagate to all child of_device objects.
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*/
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void of_propagate_archdata(struct of_device *bus)
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{
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struct dev_archdata *bus_sd = &bus->dev.archdata;
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struct device_node *bus_dp = bus->node;
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struct device_node *dp;
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for (dp = bus_dp->child; dp; dp = dp->sibling) {
|
||||
struct of_device *op = of_find_device_by_node(dp);
|
||||
|
||||
op->dev.archdata.iommu = bus_sd->iommu;
|
||||
op->dev.archdata.stc = bus_sd->stc;
|
||||
op->dev.archdata.host_controller = bus_sd->host_controller;
|
||||
op->dev.archdata.numa_node = bus_sd->numa_node;
|
||||
|
||||
if (dp->child)
|
||||
of_propagate_archdata(op);
|
||||
}
|
||||
}
|
||||
|
||||
struct bus_type of_platform_bus_type;
|
||||
EXPORT_SYMBOL(of_platform_bus_type);
|
||||
|
||||
static void get_cells(struct device_node *dp, int *addrc, int *sizec)
|
||||
{
|
||||
if (addrc)
|
||||
*addrc = of_n_addr_cells(dp);
|
||||
if (sizec)
|
||||
*sizec = of_n_size_cells(dp);
|
||||
}
|
||||
|
||||
/*
|
||||
* Default translator (generic bus)
|
||||
*/
|
||||
|
||||
void of_bus_default_count_cells(struct device_node *dev, int *addrc, int *sizec)
|
||||
{
|
||||
get_cells(dev, addrc, sizec);
|
||||
}
|
||||
|
||||
/* Make sure the least significant 64-bits are in-range. Even
|
||||
* for 3 or 4 cell values it is a good enough approximation.
|
||||
*/
|
||||
int of_out_of_range(const u32 *addr, const u32 *base,
|
||||
const u32 *size, int na, int ns)
|
||||
{
|
||||
u64 a = of_read_addr(addr, na);
|
||||
u64 b = of_read_addr(base, na);
|
||||
|
||||
if (a < b)
|
||||
return 1;
|
||||
|
||||
b += of_read_addr(size, ns);
|
||||
if (a >= b)
|
||||
return 1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int of_bus_default_map(u32 *addr, const u32 *range, int na, int ns, int pna)
|
||||
{
|
||||
u32 result[OF_MAX_ADDR_CELLS];
|
||||
int i;
|
||||
|
||||
if (ns > 2) {
|
||||
printk("of_device: Cannot handle size cells (%d) > 2.", ns);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (of_out_of_range(addr, range, range + na + pna, na, ns))
|
||||
return -EINVAL;
|
||||
|
||||
/* Start with the parent range base. */
|
||||
memcpy(result, range + na, pna * 4);
|
||||
|
||||
/* Add in the child address offset. */
|
||||
for (i = 0; i < na; i++)
|
||||
result[pna - 1 - i] +=
|
||||
(addr[na - 1 - i] -
|
||||
range[na - 1 - i]);
|
||||
|
||||
memcpy(addr, result, pna * 4);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
unsigned long of_bus_default_get_flags(const u32 *addr, unsigned long flags)
|
||||
{
|
||||
if (flags)
|
||||
return flags;
|
||||
return IORESOURCE_MEM;
|
||||
}
|
||||
|
||||
/*
|
||||
* SBUS bus specific translator
|
||||
*/
|
||||
|
||||
int of_bus_sbus_match(struct device_node *np)
|
||||
{
|
||||
struct device_node *dp = np;
|
||||
|
||||
while (dp) {
|
||||
if (!strcmp(dp->name, "sbus") ||
|
||||
!strcmp(dp->name, "sbi"))
|
||||
return 1;
|
||||
|
||||
/* Have a look at use_1to1_mapping(). We're trying
|
||||
* to match SBUS if that's the top-level bus and we
|
||||
* don't have some intervening real bus that provides
|
||||
* ranges based translations.
|
||||
*/
|
||||
if (of_find_property(dp, "ranges", NULL) != NULL)
|
||||
break;
|
||||
|
||||
dp = dp->parent;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void of_bus_sbus_count_cells(struct device_node *child, int *addrc, int *sizec)
|
||||
{
|
||||
if (addrc)
|
||||
*addrc = 2;
|
||||
if (sizec)
|
||||
*sizec = 1;
|
||||
}
|
36
arch/sparc/kernel/of_device_common.h
Normal file
36
arch/sparc/kernel/of_device_common.h
Normal file
@ -0,0 +1,36 @@
|
||||
#ifndef _OF_DEVICE_COMMON_H
|
||||
#define _OF_DEVICE_COMMON_H
|
||||
|
||||
static inline u64 of_read_addr(const u32 *cell, int size)
|
||||
{
|
||||
u64 r = 0;
|
||||
while (size--)
|
||||
r = (r << 32) | *(cell++);
|
||||
return r;
|
||||
}
|
||||
|
||||
void of_bus_default_count_cells(struct device_node *dev, int *addrc,
|
||||
int *sizec);
|
||||
int of_out_of_range(const u32 *addr, const u32 *base,
|
||||
const u32 *size, int na, int ns);
|
||||
int of_bus_default_map(u32 *addr, const u32 *range, int na, int ns, int pna);
|
||||
unsigned long of_bus_default_get_flags(const u32 *addr, unsigned long flags);
|
||||
|
||||
int of_bus_sbus_match(struct device_node *np);
|
||||
void of_bus_sbus_count_cells(struct device_node *child, int *addrc, int *sizec);
|
||||
|
||||
/* Max address size we deal with */
|
||||
#define OF_MAX_ADDR_CELLS 4
|
||||
|
||||
struct of_bus {
|
||||
const char *name;
|
||||
const char *addr_prop_name;
|
||||
int (*match)(struct device_node *parent);
|
||||
void (*count_cells)(struct device_node *child,
|
||||
int *addrc, int *sizec);
|
||||
int (*map)(u32 *addr, const u32 *range,
|
||||
int na, int ns, int pna);
|
||||
unsigned long (*get_flags)(const u32 *addr, unsigned long);
|
||||
};
|
||||
|
||||
#endif /* _OF_DEVICE_COMMON_H */
|
Loading…
Reference in New Issue
Block a user