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-rw-r--r--arch/powerpc/include/asm/mpic.h3
-rw-r--r--arch/powerpc/sysdev/mpic.c33
2 files changed, 19 insertions, 17 deletions
diff --git a/arch/powerpc/include/asm/mpic.h b/arch/powerpc/include/asm/mpic.h
index b9d2c0fb0492..67b4d9837236 100644
--- a/arch/powerpc/include/asm/mpic.h
+++ b/arch/powerpc/include/asm/mpic.h
@@ -251,6 +251,9 @@ struct mpic_irq_save {
/* The instance data of a given MPIC */
struct mpic
{
+ /* The OpenFirmware dt node for this MPIC */
+ struct device_node *node;
+
/* The remapper for this MPIC */
struct irq_host *irqhost;
diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index 3240bbabc2f9..76110608543a 100644
--- a/arch/powerpc/sysdev/mpic.c
+++ b/arch/powerpc/sysdev/mpic.c
@@ -315,26 +315,25 @@ static void _mpic_map_mmio(struct mpic *mpic, phys_addr_t phys_addr,
}
#ifdef CONFIG_PPC_DCR
-static void _mpic_map_dcr(struct mpic *mpic, struct device_node *node,
- struct mpic_reg_bank *rb,
+static void _mpic_map_dcr(struct mpic *mpic, struct mpic_reg_bank *rb,
unsigned int offset, unsigned int size)
{
- phys_addr_t phys_addr = dcr_resource_start(node, 0);
+ phys_addr_t phys_addr = dcr_resource_start(mpic->node, 0);
rb->dhost = dcr_map(mpic->node, phys_addr + offset, size);
BUG_ON(!DCR_MAP_OK(rb->dhost));
}
-static inline void mpic_map(struct mpic *mpic, struct device_node *node,
+static inline void mpic_map(struct mpic *mpic,
phys_addr_t phys_addr, struct mpic_reg_bank *rb,
unsigned int offset, unsigned int size)
{
if (mpic->flags & MPIC_USES_DCR)
- _mpic_map_dcr(mpic, node, rb, offset, size);
+ _mpic_map_dcr(mpic, rb, offset, size);
else
_mpic_map_mmio(mpic, phys_addr, rb, offset, size);
}
#else /* CONFIG_PPC_DCR */
-#define mpic_map(m,n,p,b,o,s) _mpic_map_mmio(m,p,b,o,s)
+#define mpic_map(m,p,b,o,s) _mpic_map_mmio(m,p,b,o,s)
#endif /* !CONFIG_PPC_DCR */
@@ -1172,6 +1171,7 @@ struct mpic * __init mpic_alloc(struct device_node *node,
goto err_of_node_put;
mpic->name = name;
+ mpic->node = node;
mpic->paddr = phys_addr;
mpic->hc_irq = mpic_irq_chip;
@@ -1218,13 +1218,13 @@ struct mpic * __init mpic_alloc(struct device_node *node,
mpic->spurious_vec = intvec_top;
/* Check for "big-endian" in device-tree */
- if (of_get_property(node, "big-endian", NULL) != NULL)
+ if (of_get_property(mpic->node, "big-endian", NULL) != NULL)
mpic->flags |= MPIC_BIG_ENDIAN;
- if (of_device_is_compatible(node, "fsl,mpic"))
+ if (of_device_is_compatible(mpic->node, "fsl,mpic"))
mpic->flags |= MPIC_FSL;
/* Look for protected sources */
- psrc = of_get_property(node, "protected-sources", &psize);
+ psrc = of_get_property(mpic->node, "protected-sources", &psize);
if (psrc) {
/* Allocate a bitmap with one bit per interrupt */
unsigned int mapsize = BITS_TO_LONGS(intvec_top + 1);
@@ -1259,15 +1259,15 @@ struct mpic * __init mpic_alloc(struct device_node *node,
#endif
/* Map the global registers */
- mpic_map(mpic, node, mpic->paddr, &mpic->gregs, MPIC_INFO(GREG_BASE), 0x1000);
- mpic_map(mpic, node, mpic->paddr, &mpic->tmregs, MPIC_INFO(TIMER_BASE), 0x1000);
+ mpic_map(mpic, mpic->paddr, &mpic->gregs, MPIC_INFO(GREG_BASE), 0x1000);
+ mpic_map(mpic, mpic->paddr, &mpic->tmregs, MPIC_INFO(TIMER_BASE), 0x1000);
/* Reset */
/* When using a device-node, reset requests are only honored if the MPIC
* is allowed to reset.
*/
- if (of_get_property(node, "pic-no-reset", NULL))
+ if (of_get_property(mpic->node, "pic-no-reset", NULL))
mpic->flags |= MPIC_NO_RESET;
if ((flags & MPIC_WANTS_RESET) && !(mpic->flags & MPIC_NO_RESET)) {
@@ -1315,7 +1315,7 @@ struct mpic * __init mpic_alloc(struct device_node *node,
for_each_possible_cpu(i) {
unsigned int cpu = get_hard_smp_processor_id(i);
- mpic_map(mpic, node, mpic->paddr, &mpic->cpuregs[cpu],
+ mpic_map(mpic, mpic->paddr, &mpic->cpuregs[cpu],
MPIC_INFO(CPU_BASE) + cpu * MPIC_INFO(CPU_STRIDE),
0x1000);
}
@@ -1323,13 +1323,13 @@ struct mpic * __init mpic_alloc(struct device_node *node,
/* Initialize main ISU if none provided */
if (mpic->isu_size == 0) {
mpic->isu_size = mpic->num_sources;
- mpic_map(mpic, node, mpic->paddr, &mpic->isus[0],
+ mpic_map(mpic, mpic->paddr, &mpic->isus[0],
MPIC_INFO(IRQ_BASE), MPIC_INFO(IRQ_STRIDE) * mpic->isu_size);
}
mpic->isu_shift = 1 + __ilog2(mpic->isu_size - 1);
mpic->isu_mask = (1 << mpic->isu_shift) - 1;
- mpic->irqhost = irq_alloc_host(node, IRQ_HOST_MAP_LINEAR,
+ mpic->irqhost = irq_alloc_host(mpic->node, IRQ_HOST_MAP_LINEAR,
isu_size ? isu_size : mpic->num_sources,
&mpic_host_ops,
flags & MPIC_LARGE_VECTORS ? 2048 : 256);
@@ -1372,7 +1372,6 @@ struct mpic * __init mpic_alloc(struct device_node *node,
irq_set_default_host(mpic->irqhost);
}
- of_node_put(node);
return mpic;
err_of_node_put:
@@ -1387,7 +1386,7 @@ void __init mpic_assign_isu(struct mpic *mpic, unsigned int isu_num,
BUG_ON(isu_num >= MPIC_MAX_ISU);
- mpic_map(mpic, mpic->irqhost->of_node,
+ mpic_map(mpic,
paddr, &mpic->isus[isu_num], 0,
MPIC_INFO(IRQ_STRIDE) * mpic->isu_size);