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[SPARC64]: of_device layer IRQ resolution

Browse source 
Do IRQ determination generically by parsing the PROM properties,
and using IRQ controller drivers for final resolution.

One immediate positive effect is that all of the IRQ frobbing
in the EBUS, ISA, and PCI controller layers has been eliminated.
We just look up the of_device and use the properly computed
value.

The PCI controller irq_build() routines are gone and no longer
used.  Unfortunately sbus_build_irq() has to remain as there is
a direct reference to this in the sunzilog driver.  That can be
killed off once the sparc32 side of this is written and the
sunzilog driver is transformed into an "of" bus driver.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2006-06-29 15:07:37 -07:00 • committed by David S. Miller
commit 2b1e597871
13 changed files with 1105 additions and 1050 deletions
Download patch file Download diff file Expand all files Collapse all files

5
include/asm-sparc64/of_device.h
View file

@ -22,7 +22,8 @@ struct of_device
struct device_node *node;
struct device dev;
struct resource resource[PROMREG_MAX];
unsigned int irq;
unsigned int irqs[PROMINTR_MAX];
int num_irqs;
void *sysdata;
@ -35,6 +36,8 @@ struct of_device
extern void __iomem *of_ioremap(struct resource *res, unsigned long offset, unsigned long size, char *name);
extern void of_iounmap(void __iomem *base, unsigned long size);
extern struct of_device *of_find_device_by_node(struct device_node *);
extern const struct of_device_id *of_match_device(
const struct of_device_id *matches, const struct of_device *dev);

3
include/asm-sparc64/pbm.h
View file

@ -16,6 +16,7 @@
#include <asm/page.h>
#include <asm/oplib.h>
#include <asm/prom.h>
#include <asm/of_device.h>
#include <asm/iommu.h>
/* The abstraction used here is that there are PCI controllers,
@ -209,7 +210,6 @@ struct pci_controller_info {
/* Operations which are controller specific. */
void (*scan_bus)(struct pci_controller_info *);
unsigned int (*irq_build)(struct pci_pbm_info *, struct pci_dev *, unsigned int);
void (*base_address_update)(struct pci_dev *, int);
void (*resource_adjust)(struct pci_dev *, struct resource *, struct resource *);
@ -226,6 +226,7 @@ struct pci_controller_info {
struct pcidev_cookie {
struct pci_pbm_info *pbm;
struct device_node *prom_node;
struct of_device *op;
struct linux_prom_pci_registers prom_regs[PROMREG_MAX];
int num_prom_regs;
struct linux_prom_pci_registers prom_assignments[PROMREG_MAX];

8
include/asm-sparc64/prom.h
View file

@ -34,6 +34,7 @@ struct property {
unsigned int unique_id;
};
struct of_irq_controller;
struct device_node {
char *name;
char *type;
@ -53,6 +54,13 @@ struct device_node {
unsigned long _flags;
void *data;
unsigned int unique_id;
struct of_irq_controller *irq_trans;
};
struct of_irq_controller {
unsigned int (*irq_build)(struct device_node *, unsigned int, void *);
void *data;
};
/* flag descriptions */