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Merge remote branch 'kumar/next' into next

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This commit is contained in:
Benjamin Herrenschmidt
2011-05-20 13:43:47 +10:00
parent 593adf317c bbfff72ee3
commit 3d07f0e83d
32 changed files with 1954 additions and 1378 deletions
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129
arch/powerpc/sysdev/mpic.c
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@ -6,6 +6,7 @@
* with various broken implementations of this HW.
*
* Copyright (C) 2004 Benjamin Herrenschmidt, IBM Corp.
* Copyright 2010-2011 Freescale Semiconductor, Inc.
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive
@ -218,6 +219,28 @@ static inline void _mpic_ipi_write(struct mpic *mpic, unsigned int ipi, u32 valu
_mpic_write(mpic->reg_type, &mpic->gregs, offset, value);
}
static inline u32 _mpic_tm_read(struct mpic *mpic, unsigned int tm)
{
unsigned int offset = MPIC_INFO(TIMER_VECTOR_PRI) +
((tm & 3) * MPIC_INFO(TIMER_STRIDE));
if (tm >= 4)
offset += 0x1000 / 4;
return _mpic_read(mpic->reg_type, &mpic->tmregs, offset);
}
static inline void _mpic_tm_write(struct mpic *mpic, unsigned int tm, u32 value)
{
unsigned int offset = MPIC_INFO(TIMER_VECTOR_PRI) +
((tm & 3) * MPIC_INFO(TIMER_STRIDE));
if (tm >= 4)
offset += 0x1000 / 4;
_mpic_write(mpic->reg_type, &mpic->tmregs, offset, value);
}
static inline u32 _mpic_cpu_read(struct mpic *mpic, unsigned int reg)
{
unsigned int cpu = mpic_processor_id(mpic);
@ -268,6 +291,8 @@ static inline void _mpic_irq_write(struct mpic *mpic, unsigned int src_no,
#define mpic_write(b,r,v) _mpic_write(mpic->reg_type,&(b),(r),(v))
#define mpic_ipi_read(i) _mpic_ipi_read(mpic,(i))
#define mpic_ipi_write(i,v) _mpic_ipi_write(mpic,(i),(v))
#define mpic_tm_read(i) _mpic_tm_read(mpic,(i))
#define mpic_tm_write(i,v) _mpic_tm_write(mpic,(i),(v))
#define mpic_cpu_read(i) _mpic_cpu_read(mpic,(i))
#define mpic_cpu_write(i,v) _mpic_cpu_write(mpic,(i),(v))
#define mpic_irq_read(s,r) _mpic_irq_read(mpic,(s),(r))
@ -624,6 +649,13 @@ static unsigned int mpic_is_ipi(struct mpic *mpic, unsigned int irq)
return (src >= mpic->ipi_vecs[0] && src <= mpic->ipi_vecs[3]);
}
/* Determine if the linux irq is a timer */
static unsigned int mpic_is_tm(struct mpic *mpic, unsigned int irq)
{
unsigned int src = virq_to_hw(irq);
return (src >= mpic->timer_vecs[0] && src <= mpic->timer_vecs[7]);
}
/* Convert a cpu mask from logical to physical cpu numbers. */
static inline u32 mpic_physmask(u32 cpumask)
@ -810,6 +842,25 @@ static void mpic_end_ipi(struct irq_data *d)
#endif /* CONFIG_SMP */
static void mpic_unmask_tm(struct irq_data *d)
{
struct mpic *mpic = mpic_from_irq_data(d);
unsigned int src = virq_to_hw(d->irq) - mpic->timer_vecs[0];
DBG("%s: enable_tm: %d (tm %d)\n", mpic->name, irq, src);
mpic_tm_write(src, mpic_tm_read(src) & ~MPIC_VECPRI_MASK);
mpic_tm_read(src);
}
static void mpic_mask_tm(struct irq_data *d)
{
struct mpic *mpic = mpic_from_irq_data(d);
unsigned int src = virq_to_hw(d->irq) - mpic->timer_vecs[0];
mpic_tm_write(src, mpic_tm_read(src) | MPIC_VECPRI_MASK);
mpic_tm_read(src);
}
int mpic_set_affinity(struct irq_data *d, const struct cpumask *cpumask,
bool force)
{
@ -936,6 +987,12 @@ static struct irq_chip mpic_ipi_chip = {
};
#endif /* CONFIG_SMP */
static struct irq_chip mpic_tm_chip = {
.irq_mask = mpic_mask_tm,
.irq_unmask = mpic_unmask_tm,
.irq_eoi = mpic_end_irq,
};
#ifdef CONFIG_MPIC_U3_HT_IRQS
static struct irq_chip mpic_irq_ht_chip = {
.irq_startup = mpic_startup_ht_irq,
@ -979,6 +1036,16 @@ static int mpic_host_map(struct irq_host *h, unsigned int virq,
}
#endif /* CONFIG_SMP */
if (hw >= mpic->timer_vecs[0] && hw <= mpic->timer_vecs[7]) {
WARN_ON(!(mpic->flags & MPIC_PRIMARY));
DBG("mpic: mapping as timer\n");
irq_set_chip_data(virq, mpic);
irq_set_chip_and_handler(virq, &mpic->hc_tm,
handle_fasteoi_irq);
return 0;
}
if (hw >= mpic->irq_count)
return -EINVAL;
@ -1019,6 +1086,7 @@ static int mpic_host_xlate(struct irq_host *h, struct device_node *ct,
irq_hw_number_t *out_hwirq, unsigned int *out_flags)
{
struct mpic *mpic = h->host_data;
static unsigned char map_mpic_senses[4] = {
IRQ_TYPE_EDGE_RISING,
IRQ_TYPE_LEVEL_LOW,
@ -1027,7 +1095,38 @@ static int mpic_host_xlate(struct irq_host *h, struct device_node *ct,
};
*out_hwirq = intspec[0];
if (intsize > 1) {
if (intsize >= 4 && (mpic->flags & MPIC_FSL)) {
/*
* Freescale MPIC with extended intspec:
* First two cells are as usual. Third specifies
* an "interrupt type". Fourth is type-specific data.
*
* See Documentation/devicetree/bindings/powerpc/fsl/mpic.txt
*/
switch (intspec[2]) {
case 0:
case 1: /* no EISR/EIMR support for now, treat as shared IRQ */
break;
case 2:
if (intspec[0] >= ARRAY_SIZE(mpic->ipi_vecs))
return -EINVAL;
*out_hwirq = mpic->ipi_vecs[intspec[0]];
break;
case 3:
if (intspec[0] >= ARRAY_SIZE(mpic->timer_vecs))
return -EINVAL;
*out_hwirq = mpic->timer_vecs[intspec[0]];
break;
default:
pr_debug("%s: unknown irq type %u\n",
__func__, intspec[2]);
return -EINVAL;
}
*out_flags = map_mpic_senses[intspec[1] & 3];
} else if (intsize > 1) {
u32 mask = 0x3;
/* Apple invented a new race of encoding on machines with
@ -1103,6 +1202,9 @@ struct mpic * __init mpic_alloc(struct device_node *node,
mpic->hc_ipi.name = name;
#endif /* CONFIG_SMP */
mpic->hc_tm = mpic_tm_chip;
mpic->hc_tm.name = name;
mpic->flags = flags;
mpic->isu_size = isu_size;
mpic->irq_count = irq_count;
@ -1113,10 +1215,14 @@ struct mpic * __init mpic_alloc(struct device_node *node,
else
intvec_top = 255;
mpic->timer_vecs[0] = intvec_top - 8;
mpic->timer_vecs[1] = intvec_top - 7;
mpic->timer_vecs[2] = intvec_top - 6;
mpic->timer_vecs[3] = intvec_top - 5;
mpic->timer_vecs[0] = intvec_top - 12;
mpic->timer_vecs[1] = intvec_top - 11;
mpic->timer_vecs[2] = intvec_top - 10;
mpic->timer_vecs[3] = intvec_top - 9;
mpic->timer_vecs[4] = intvec_top - 8;
mpic->timer_vecs[5] = intvec_top - 7;
mpic->timer_vecs[6] = intvec_top - 6;
mpic->timer_vecs[7] = intvec_top - 5;
mpic->ipi_vecs[0] = intvec_top - 4;
mpic->ipi_vecs[1] = intvec_top - 3;
mpic->ipi_vecs[2] = intvec_top - 2;
@ -1126,6 +1232,8 @@ struct mpic * __init mpic_alloc(struct device_node *node,
/* Check for "big-endian" in device-tree */
if (node && of_get_property(node, "big-endian", NULL) != NULL)
mpic->flags |= MPIC_BIG_ENDIAN;
if (node && of_device_is_compatible(node, "fsl,mpic"))
mpic->flags |= MPIC_FSL;
/* Look for protected sources */
if (node) {
@ -1317,15 +1425,17 @@ void __init mpic_init(struct mpic *mpic)
/* Set current processor priority to max */
mpic_cpu_write(MPIC_INFO(CPU_CURRENT_TASK_PRI), 0xf);
/* Initialize timers: just disable them all */
/* Initialize timers to our reserved vectors and mask them for now */
for (i = 0; i < 4; i++) {
mpic_write(mpic->tmregs,
i * MPIC_INFO(TIMER_STRIDE) +
MPIC_INFO(TIMER_DESTINATION), 0);
MPIC_INFO(TIMER_DESTINATION),
1 << hard_smp_processor_id());
mpic_write(mpic->tmregs,
i * MPIC_INFO(TIMER_STRIDE) +
MPIC_INFO(TIMER_VECTOR_PRI),
MPIC_VECPRI_MASK |
(9 << MPIC_VECPRI_PRIORITY_SHIFT) |
(mpic->timer_vecs[0] + i));
}
@ -1434,6 +1544,11 @@ void mpic_irq_set_priority(unsigned int irq, unsigned int pri)
~MPIC_VECPRI_PRIORITY_MASK;
mpic_ipi_write(src - mpic->ipi_vecs[0],
reg | (pri << MPIC_VECPRI_PRIORITY_SHIFT));
} else if (mpic_is_tm(mpic, irq)) {
reg = mpic_tm_read(src - mpic->timer_vecs[0]) &
~MPIC_VECPRI_PRIORITY_MASK;
mpic_tm_write(src - mpic->timer_vecs[0],
reg | (pri << MPIC_VECPRI_PRIORITY_SHIFT));
} else {
reg = mpic_irq_read(src, MPIC_INFO(IRQ_VECTOR_PRI))
& ~MPIC_VECPRI_PRIORITY_MASK;