2ec0cba393
http://us.fixstars.com/products/gigaaccel/ This build will create zImage suitable for TFTP boot image. * v2 - add axonram device driver - switch to 2.6.30.1 Signed-off-by: Akinobu Mita <mita@fixstars.com> SVN-Revision: 16860
108 lines
4.0 KiB
Diff
108 lines
4.0 KiB
Diff
commit 5a2642f620eb6e40792822fa0eafe23046fbb55e
|
|
Author: Benjamin Herrenschmidt <benh@kernel.crashing.org>
|
|
Date: Mon Jun 22 16:47:59 2009 +0000
|
|
|
|
powerpc/mpic: Fix mapping of "DCR" based MPIC variants
|
|
|
|
Commit 31207dab7d2e63795eb15823947bd2f7025b08e2
|
|
"Fix incorrect allocation of interrupt rev-map"
|
|
introduced a regression crashing on boot on machines using
|
|
a "DCR" based MPIC, such as the Cell blades.
|
|
|
|
The reason is that the irq host data structure is initialized
|
|
much later as a result of that patch, causing our calls to
|
|
mpic_map() do be done before we have a host setup.
|
|
|
|
Unfortunately, this breaks _mpic_map_dcr() which uses the
|
|
mpic->irqhost to get to the device node.
|
|
|
|
This fixes it by, instead, passing the device node explicitely
|
|
to mpic_map().
|
|
|
|
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
|
|
Acked-by: Akira Tsukamoto <akirat@rd.scei.sony.co.jp>
|
|
|
|
diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
|
|
index 9c3af50..32a2e95 100644
|
|
--- a/arch/powerpc/sysdev/mpic.c
|
|
+++ b/arch/powerpc/sysdev/mpic.c
|
|
@@ -279,28 +279,29 @@ 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 mpic_reg_bank *rb,
|
|
+static void _mpic_map_dcr(struct mpic *mpic, struct device_node *node,
|
|
+ struct mpic_reg_bank *rb,
|
|
unsigned int offset, unsigned int size)
|
|
{
|
|
const u32 *dbasep;
|
|
|
|
- dbasep = of_get_property(mpic->irqhost->of_node, "dcr-reg", NULL);
|
|
+ dbasep = of_get_property(node, "dcr-reg", NULL);
|
|
|
|
- rb->dhost = dcr_map(mpic->irqhost->of_node, *dbasep + offset, size);
|
|
+ rb->dhost = dcr_map(node, *dbasep + offset, size);
|
|
BUG_ON(!DCR_MAP_OK(rb->dhost));
|
|
}
|
|
|
|
-static inline void mpic_map(struct mpic *mpic, phys_addr_t phys_addr,
|
|
- struct mpic_reg_bank *rb, unsigned int offset,
|
|
- unsigned int size)
|
|
+static inline void mpic_map(struct mpic *mpic, struct device_node *node,
|
|
+ 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, rb, offset, size);
|
|
+ _mpic_map_dcr(mpic, node, rb, offset, size);
|
|
else
|
|
_mpic_map_mmio(mpic, phys_addr, rb, offset, size);
|
|
}
|
|
#else /* CONFIG_PPC_DCR */
|
|
-#define mpic_map(m,p,b,o,s) _mpic_map_mmio(m,p,b,o,s)
|
|
+#define mpic_map(m,n,p,b,o,s) _mpic_map_mmio(m,p,b,o,s)
|
|
#endif /* !CONFIG_PPC_DCR */
|
|
|
|
|
|
@@ -1152,8 +1153,8 @@ struct mpic * __init mpic_alloc(struct device_node *node,
|
|
}
|
|
|
|
/* Map the global registers */
|
|
- mpic_map(mpic, paddr, &mpic->gregs, MPIC_INFO(GREG_BASE), 0x1000);
|
|
- mpic_map(mpic, paddr, &mpic->tmregs, MPIC_INFO(TIMER_BASE), 0x1000);
|
|
+ mpic_map(mpic, node, paddr, &mpic->gregs, MPIC_INFO(GREG_BASE), 0x1000);
|
|
+ mpic_map(mpic, node, paddr, &mpic->tmregs, MPIC_INFO(TIMER_BASE), 0x1000);
|
|
|
|
/* Reset */
|
|
if (flags & MPIC_WANTS_RESET) {
|
|
@@ -1194,7 +1195,7 @@ struct mpic * __init mpic_alloc(struct device_node *node,
|
|
|
|
/* Map the per-CPU registers */
|
|
for (i = 0; i < mpic->num_cpus; i++) {
|
|
- mpic_map(mpic, paddr, &mpic->cpuregs[i],
|
|
+ mpic_map(mpic, node, paddr, &mpic->cpuregs[i],
|
|
MPIC_INFO(CPU_BASE) + i * MPIC_INFO(CPU_STRIDE),
|
|
0x1000);
|
|
}
|
|
@@ -1202,7 +1203,7 @@ 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, paddr, &mpic->isus[0],
|
|
+ mpic_map(mpic, node, paddr, &mpic->isus[0],
|
|
MPIC_INFO(IRQ_BASE), MPIC_INFO(IRQ_STRIDE) * mpic->isu_size);
|
|
}
|
|
mpic->isu_shift = 1 + __ilog2(mpic->isu_size - 1);
|
|
@@ -1256,8 +1257,10 @@ void __init mpic_assign_isu(struct mpic *mpic, unsigned int isu_num,
|
|
|
|
BUG_ON(isu_num >= MPIC_MAX_ISU);
|
|
|
|
- mpic_map(mpic, paddr, &mpic->isus[isu_num], 0,
|
|
+ mpic_map(mpic, mpic->irqhost->of_node,
|
|
+ paddr, &mpic->isus[isu_num], 0,
|
|
MPIC_INFO(IRQ_STRIDE) * mpic->isu_size);
|
|
+
|
|
if ((isu_first + mpic->isu_size) > mpic->num_sources)
|
|
mpic->num_sources = isu_first + mpic->isu_size;
|
|
}
|