[SPARC64]: of_device layer IRQ resolution

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>

3 files changed, 14 insertions, 2 deletions

diff --git a/include/asm-sparc64/of_device.h b/include/asm-sparc64/of_device.h
index 37c5856fae12..a62c7b997d66 100644
--- a/include/asm-sparc64/of_device.h
+++ b/include/asm-sparc64/of_device.h
@@ -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);
 
diff --git a/include/asm-sparc64/pbm.h b/include/asm-sparc64/pbm.h
index 83b3c26cd063..dcfa7629358c 100644
--- a/include/asm-sparc64/pbm.h
+++ b/include/asm-sparc64/pbm.h
@@ -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];
diff --git a/include/asm-sparc64/prom.h b/include/asm-sparc64/prom.h
index aad16c2aa5e8..99671ed6625d 100644
--- a/include/asm-sparc64/prom.h
+++ b/include/asm-sparc64/prom.h
@@ -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 */