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[SPARC64] IRQ: Use irq_desc->chip_data instead of irq_desc->handler_data

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Otherwise we can't use the generic MSI code.

Furthermore, properly use the {get,set}_irq_foo() abstracted
interfaces instead of direct accesses to irq_desc[]->foo.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2007-01-29 12:12:28 -08:00
parent cf69eab231
commit 68c9218694
1 changed files with 20 additions and 24 deletions
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44
arch/sparc64/kernel/irq.c
View file

@ -268,8 +268,7 @@ static int irq_choose_cpu(unsigned int virt_irq)
static void sun4u_irq_enable(unsigned int virt_irq)
{
irq_desc_t *desc = irq_desc + virt_irq;
struct irq_handler_data *data = desc->handler_data;
struct irq_handler_data *data = get_irq_chip_data(virt_irq);
if (likely(data)) {
unsigned long cpuid, imap;
@ -286,8 +285,7 @@ static void sun4u_irq_enable(unsigned int virt_irq)
static void sun4u_irq_disable(unsigned int virt_irq)
{
irq_desc_t *desc = irq_desc + virt_irq;
struct irq_handler_data *data = desc->handler_data;
struct irq_handler_data *data = get_irq_chip_data(virt_irq);
if (likely(data)) {
unsigned long imap = data->imap;
@ -300,8 +298,7 @@ static void sun4u_irq_disable(unsigned int virt_irq)
static void sun4u_irq_end(unsigned int virt_irq)
{
irq_desc_t *desc = irq_desc + virt_irq;
struct irq_handler_data *data = desc->handler_data;
struct irq_handler_data *data = get_irq_chip_data(virt_irq);
if (likely(data))
upa_writel(ICLR_IDLE, data->iclr);
@ -362,8 +359,7 @@ static void sun4v_irq_end(unsigned int virt_irq)
static void run_pre_handler(unsigned int virt_irq)
{
struct ino_bucket *bucket = virt_irq_to_bucket(virt_irq);
irq_desc_t *desc = irq_desc + virt_irq;
struct irq_handler_data *data = desc->handler_data;
struct irq_handler_data *data = get_irq_chip_data(virt_irq);
if (likely(data->pre_handler)) {
data->pre_handler(__irq_ino(__irq(bucket)),
@ -406,26 +402,27 @@ void irq_install_pre_handler(int virt_irq,
void (*func)(unsigned int, void *, void *),
void *arg1, void *arg2)
{
irq_desc_t *desc = irq_desc + virt_irq;
struct irq_handler_data *data = desc->handler_data;
struct irq_handler_data *data = get_irq_chip_data(virt_irq);
struct irq_chip *chip;
data->pre_handler = func;
data->pre_handler_arg1 = arg1;
data->pre_handler_arg2 = arg2;
if (desc->chip == &sun4u_irq_ack ||
desc->chip == &sun4v_irq_ack)
chip = get_irq_chip(virt_irq);
if (chip == &sun4u_irq_ack ||
chip == &sun4v_irq_ack)
return;
desc->chip = (desc->chip == &sun4u_irq ?
&sun4u_irq_ack : &sun4v_irq_ack);
chip = (chip == &sun4u_irq ?
&sun4u_irq_ack : &sun4v_irq_ack);
set_irq_chip(virt_irq, chip);
}
unsigned int build_irq(int inofixup, unsigned long iclr, unsigned long imap)
{
struct ino_bucket *bucket;
struct irq_handler_data *data;
irq_desc_t *desc;
int ino;
BUG_ON(tlb_type == hypervisor);
@ -434,11 +431,11 @@ unsigned int build_irq(int inofixup, unsigned long iclr, unsigned long imap)
bucket = &ivector_table[ino];
if (!bucket->virt_irq) {
bucket->virt_irq = virt_irq_alloc(__irq(bucket));
irq_desc[bucket->virt_irq].chip = &sun4u_irq;
set_irq_chip(bucket->virt_irq, &sun4u_irq);
}
desc = irq_desc + bucket->virt_irq;
if (unlikely(desc->handler_data))
data = get_irq_chip_data(bucket->virt_irq);
if (unlikely(data))
goto out;
data = kzalloc(sizeof(struct irq_handler_data), GFP_ATOMIC);
@ -446,7 +443,7 @@ unsigned int build_irq(int inofixup, unsigned long iclr, unsigned long imap)
prom_printf("IRQ: kzalloc(irq_handler_data) failed.\n");
prom_halt();
}
desc->handler_data = data;
set_irq_chip_data(bucket->virt_irq, data);
data->imap = imap;
data->iclr = iclr;
@ -460,7 +457,6 @@ unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino)
struct ino_bucket *bucket;
struct irq_handler_data *data;
unsigned long sysino;
irq_desc_t *desc;
BUG_ON(tlb_type != hypervisor);
@ -468,11 +464,11 @@ unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino)
bucket = &ivector_table[sysino];
if (!bucket->virt_irq) {
bucket->virt_irq = virt_irq_alloc(__irq(bucket));
irq_desc[bucket->virt_irq].chip = &sun4v_irq;
set_irq_chip(bucket->virt_irq, &sun4v_irq);
}
desc = irq_desc + bucket->virt_irq;
if (unlikely(desc->handler_data))
data = get_irq_chip_data(bucket->virt_irq);
if (unlikely(data))
goto out;
data = kzalloc(sizeof(struct irq_handler_data), GFP_ATOMIC);
@ -480,7 +476,7 @@ unsigned int sun4v_build_irq(u32 devhandle, unsigned int devino)
prom_printf("IRQ: kzalloc(irq_handler_data) failed.\n");
prom_halt();
}
desc->handler_data = data;
set_irq_chip_data(bucket->virt_irq, data);
/* Catch accidental accesses to these things. IMAP/ICLR handling
* is done by hypervisor calls on sun4v platforms, not by direct