Commit 4c20e996 authored by Tom Rini's avatar Tom Rini

Merge

parents 989ff8b2 5dd133b7
......@@ -33,6 +33,7 @@
void* OpenPIC_Addr;
static volatile struct OpenPIC *OpenPIC = NULL;
/*
* We define OpenPIC_InitSenses table thusly:
* bit 0x1: sense, 0 for edge and 1 for level.
......@@ -261,32 +262,32 @@ static void openpic_safe_writefield_IPI(volatile u_int *addr, u_int mask, u_int
}
#endif /* CONFIG_SMP */
#if defined(CONFIG_EPIC_SERIAL_MODE) || defined(CONFIG_PMAC_PBOOK)
static void openpic_reset(void)
#ifdef CONFIG_EPIC_SERIAL_MODE
static void __init openpic_eicr_set_clk(u_int clkval)
{
openpic_setfield(&OpenPIC->Global.Global_Configuration0,
OPENPIC_CONFIG_RESET);
while (openpic_readfield(&OpenPIC->Global.Global_Configuration0,
OPENPIC_CONFIG_RESET))
mb();
openpic_writefield(&OpenPIC->Global.Global_Configuration1,
OPENPIC_EICR_S_CLK_MASK, (clkval << 28));
}
#endif
#ifdef CONFIG_EPIC_SERIAL_MODE
static void openpic_enable_sie(void)
static void __init openpic_enable_sie(void)
{
openpic_setfield(&OpenPIC->Global.Global_Configuration1,
OPENPIC_EICR_SIE);
OPENPIC_EICR_SIE);
}
#endif
static void openpic_eicr_set_clk(u_int clkval)
#if defined(CONFIG_EPIC_SERIAL_MODE) || defined(CONFIG_PMAC_PBOOK)
static void openpic_reset(void)
{
openpic_writefield(&OpenPIC->Global.Global_Configuration1,
OPENPIC_EICR_S_CLK_MASK, (clkval << 28));
openpic_setfield(&OpenPIC->Global.Global_Configuration0,
OPENPIC_CONFIG_RESET);
while (openpic_readfield(&OpenPIC->Global.Global_Configuration0,
OPENPIC_CONFIG_RESET))
mb();
}
#endif
void openpic_set_sources(int first_irq, int num_irqs, void *first_ISR)
void __init openpic_set_sources(int first_irq, int num_irqs, void *first_ISR)
{
volatile OpenPIC_Source *src = first_ISR;
int i, last_irq;
......@@ -300,7 +301,14 @@ void openpic_set_sources(int first_irq, int num_irqs, void *first_ISR)
ISR[i] = src;
}
void __init openpic_init(int linux_irq_offset)
/*
* The `offset' parameter defines where the interrupts handled by the
* OpenPIC start in the space of interrupt numbers that the kernel knows
* about. In other words, the OpenPIC's IRQ0 is numbered `offset' in the
* kernel's interrupt numbering scheme.
* We assume there is only one OpenPIC.
*/
void __init openpic_init(int offset)
{
u_int t, i;
u_int timerfreq;
......@@ -349,13 +357,13 @@ void __init openpic_init(int linux_irq_offset)
printk("OpenPIC timer frequency is %d.%06d MHz\n",
timerfreq / 1000000, timerfreq % 1000000);
open_pic_irq_offset = linux_irq_offset;
open_pic_irq_offset = offset;
/* Initialize timer interrupts */
if ( ppc_md.progress ) ppc_md.progress("openpic: timer",0x3ba);
for (i = 0; i < OPENPIC_NUM_TIMERS; i++) {
/* Disabled, Priority 0 */
openpic_inittimer(i, 0, OPENPIC_VEC_TIMER+i+linux_irq_offset);
openpic_inittimer(i, 0, OPENPIC_VEC_TIMER+i+offset);
/* No processor */
openpic_maptimer(i, 0);
}
......@@ -365,12 +373,10 @@ void __init openpic_init(int linux_irq_offset)
if ( ppc_md.progress ) ppc_md.progress("openpic: ipi",0x3bb);
for (i = 0; i < OPENPIC_NUM_IPI; i++) {
/* Disabled, Priority 10..13 */
openpic_initipi(i, 10+i, OPENPIC_VEC_IPI+i+linux_irq_offset);
openpic_initipi(i, 10+i, OPENPIC_VEC_IPI+i+offset);
/* IPIs are per-CPU */
irq_desc[OPENPIC_VEC_IPI+i+linux_irq_offset].status |=
IRQ_PER_CPU;
irq_desc[OPENPIC_VEC_IPI+i+linux_irq_offset].handler =
&open_pic_ipi;
irq_desc[OPENPIC_VEC_IPI+i+offset].status |= IRQ_PER_CPU;
irq_desc[OPENPIC_VEC_IPI+i+offset].handler = &open_pic_ipi;
}
#endif
......@@ -387,40 +393,36 @@ void __init openpic_init(int linux_irq_offset)
continue;
/* the bootloader may have left it enabled (bad !) */
openpic_disable_irq(i+linux_irq_offset);
openpic_disable_irq(i+offset);
/*
* We find the value from either the InitSenses table
* or assume a negative polarity level interrupt.
*/
sense = (i < OpenPIC_NumInitSenses)? OpenPIC_InitSenses[i]: 1;
sense = (i < OpenPIC_NumInitSenses)? OpenPIC_InitSenses[i]: \
(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE);
if ((sense & IRQ_SENSE_MASK) == 1)
irq_desc[i+linux_irq_offset].status = IRQ_LEVEL;
if (sense & IRQ_SENSE_MASK)
irq_desc[i+offset].status = IRQ_LEVEL;
/* Enabled, Priority 8 */
openpic_initirq(i, 8, i + linux_irq_offset,
(sense & IRQ_POLARITY_MASK),
openpic_initirq(i, 8, i+offset, (sense & IRQ_POLARITY_MASK),
(sense & IRQ_SENSE_MASK));
/* Processor 0 */
openpic_mapirq(i, 1<<0, 0);
}
/* Init descriptors */
for (i = linux_irq_offset; i < NumSources + linux_irq_offset; i++)
for (i = offset; i < NumSources + offset; i++)
irq_desc[i].handler = &open_pic;
/* Initialize the spurious interrupt */
if (ppc_md.progress) ppc_md.progress("openpic: spurious",0x3bd);
openpic_set_spurious(OPENPIC_VEC_SPURIOUS+linux_irq_offset);
openpic_set_spurious(OPENPIC_VEC_SPURIOUS+offset);
/* Initialize the cascade */
if (linux_irq_offset) {
if (request_irq(linux_irq_offset, no_action, SA_INTERRUPT,
if (offset) {
if (request_irq(offset, no_action, SA_INTERRUPT,
"82c59 cascade", NULL))
printk("Unable to get OpenPIC IRQ 0 for cascade\n");
}
openpic_disable_8259_pass_through();
openpic_disable_8259_pass_through();
#ifdef CONFIG_EPIC_SERIAL_MODE
openpic_eicr_set_clk(7); /* Slowest value until we know better */
openpic_enable_sie();
......@@ -479,7 +481,7 @@ static u_int openpic_get_priority(void)
}
#endif /* notused */
static void openpic_set_priority(u_int pri)
static void __init openpic_set_priority(u_int pri)
{
DECL_THIS_CPU;
......@@ -656,29 +658,18 @@ static void __init openpic_maptimer(u_int timer, u_int cpumask)
}
/*
* Initalize the interrupt source which will generate an NMI (and disable it).
* Initalize the interrupt source which will generate an NMI.
* This raises the interrupt's priority from 8 to 9.
*
* irq: The logical IRQ which generates an NMI.
*/
void __init
openpic_init_nmi_irq(u_int irq)
{
int sense;
/* If this wasn't given, assume a level, negative polarity interrupt. */
sense = (irq < OpenPIC_NumInitSenses) ? OpenPIC_InitSenses[irq] :
(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE);
openpic_safe_writefield(&ISR[irq]->Vector_Priority,
OPENPIC_PRIORITY_MASK | OPENPIC_VECTOR_MASK |
OPENPIC_SENSE_MASK | OPENPIC_POLARITY_MASK,
(9 << OPENPIC_PRIORITY_SHIFT) |
(irq + open_pic_irq_offset) |
((sense & IRQ_POLARITY_MASK) ?
OPENPIC_POLARITY_POSITIVE :
OPENPIC_POLARITY_NEGATIVE) |
((sense & IRQ_SENSE_MASK) ? OPENPIC_SENSE_LEVEL
: OPENPIC_SENSE_EDGE));
check_arg_irq(irq);
openpic_safe_writefield(&ISR[irq - open_pic_irq_offset]->Vector_Priority,
OPENPIC_PRIORITY_MASK,
9 << OPENPIC_PRIORITY_SHIFT);
}
/*
......@@ -752,7 +743,8 @@ void openpic_disable_ipi(u_int irq)
* pol: polarity (1 for positive, 0 for negative)
* sense: 1 for level, 0 for edge
*/
static void openpic_initirq(u_int irq, u_int pri, u_int vec, int pol, int sense)
static void __init
openpic_initirq(u_int irq, u_int pri, u_int vec, int pol, int sense)
{
openpic_safe_writefield(&ISR[irq]->Vector_Priority,
OPENPIC_PRIORITY_MASK | OPENPIC_VECTOR_MASK |
......
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