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sparc32: Convert sun4d IRQ code to use generic device tree probing. 

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2008-08-27 02:50:57 -07:00
parent f1b6aa87b7
commit 71d3721189
1 changed files with 48 additions and 35 deletions
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83
arch/sparc/kernel/sun4d_irq.c
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@ -409,47 +409,55 @@ static void sun4d_set_udt(int cpu)
/* Setup IRQ distribution scheme. */
void __init sun4d_distribute_irqs(void)
{
struct device_node *dp;
#ifdef DISTRIBUTE_IRQS
struct sbus_bus *sbus;
unsigned long sbus_serving_map;
cpumask_t sbus_serving_map;
sbus_serving_map = cpu_present_map;
for_each_sbus(sbus) {
if ((sbus->board * 2) == boot_cpu_id && (cpu_present_map & (1 << (sbus->board * 2 + 1))))
sbus_tid[sbus->board] = (sbus->board * 2 + 1);
else if (cpu_present_map & (1 << (sbus->board * 2)))
sbus_tid[sbus->board] = (sbus->board * 2);
else if (cpu_present_map & (1 << (sbus->board * 2 + 1)))
sbus_tid[sbus->board] = (sbus->board * 2 + 1);
for_each_node_by_name(dp, "sbi") {
int board = of_getintprop_default(dp, "board#", 0);
if ((board * 2) == boot_cpu_id && cpu_isset(board * 2 + 1, cpu_present_map))
sbus_tid[board] = (board * 2 + 1);
else if (cpu_isset(board * 2, cpu_present_map))
sbus_tid[board] = (board * 2);
else if (cpu_isset(board * 2 + 1, cpu_present_map))
sbus_tid[board] = (board * 2 + 1);
else
sbus_tid[sbus->board] = 0xff;
if (sbus_tid[sbus->board] != 0xff)
sbus_serving_map &= ~(1 << sbus_tid[sbus->board]);
sbus_tid[board] = 0xff;
if (sbus_tid[board] != 0xff)
cpu_clear(sbus_tid[board], sbus_serving_map);
}
for_each_sbus(sbus)
if (sbus_tid[sbus->board] == 0xff) {
for_each_node_by_name(dp, "sbi") {
int board = of_getintprop_default(dp, "board#", 0);
if (sbus_tid[board] == 0xff) {
int i = 31;
if (!sbus_serving_map)
if (cpus_empty(sbus_serving_map))
sbus_serving_map = cpu_present_map;
while (!(sbus_serving_map & (1 << i)))
while (cpu_isset(i, sbus_serving_map))
i--;
sbus_tid[sbus->board] = i;
sbus_serving_map &= ~(1 << i);
sbus_tid[board] = i;
cpu_clear(i, sbus_serving_map);
}
for_each_sbus(sbus) {
printk("sbus%d IRQs directed to CPU%d\n", sbus->board, sbus_tid[sbus->board]);
set_sbi_tid(sbus->devid, sbus_tid[sbus->board] << 3);
}
for_each_node_by_name(dp, "sbi") {
int devid = of_getintprop_default(dp, "device-id", 0);
int board = of_getintprop_default(dp, "board#", 0);
printk("sbus%d IRQs directed to CPU%d\n", board, sbus_tid[board]);
set_sbi_tid(devid, sbus_tid[board] << 3);
}
#else
struct sbus_bus *sbus;
int cpuid = cpu_logical_map(1);
if (cpuid == -1)
cpuid = cpu_logical_map(0);
for_each_sbus(sbus) {
sbus_tid[sbus->board] = cpuid;
set_sbi_tid(sbus->devid, cpuid << 3);
for_each_node_by_name(dp, "sbi") {
int devid = of_getintprop_default(dp, "device-id", 0);
int board = of_getintprop_default(dp, "board#", 0);
sbus_tid[board] = cpuid;
set_sbi_tid(devid, cpuid << 3);
}
printk("All sbus IRQs directed to CPU%d\n", cpuid);
#endif
@ -541,29 +549,34 @@ static void __init sun4d_init_timers(irq_handler_t counter_fn)
void __init sun4d_init_sbi_irq(void)
{
struct sbus_bus *sbus;
unsigned mask;
struct device_node *dp;
nsbi = 0;
for_each_sbus(sbus)
for_each_node_by_name(dp, "sbi")
nsbi++;
sbus_actions = kzalloc (nsbi * 8 * 4 * sizeof(struct sbus_action), GFP_ATOMIC);
if (!sbus_actions) {
prom_printf("SUN4D: Cannot allocate sbus_actions, halting.\n");
prom_halt();
}
for_each_sbus(sbus) {
for_each_node_by_name(dp, "sbi") {
int devid = of_getintprop_default(dp, "device-id", 0);
int board = of_getintprop_default(dp, "board#", 0);
unsigned int mask;
#ifdef CONFIG_SMP
extern unsigned char boot_cpu_id;
{
extern unsigned char boot_cpu_id;
set_sbi_tid(sbus->devid, boot_cpu_id << 3);
sbus_tid[sbus->board] = boot_cpu_id;
set_sbi_tid(devid, boot_cpu_id << 3);
sbus_tid[board] = boot_cpu_id;
}
#endif
/* Get rid of pending irqs from PROM */
mask = acquire_sbi(sbus->devid, 0xffffffff);
mask = acquire_sbi(devid, 0xffffffff);
if (mask) {
printk ("Clearing pending IRQs %08x on SBI %d\n", mask, sbus->board);
release_sbi(sbus->devid, mask);
printk ("Clearing pending IRQs %08x on SBI %d\n", mask, board);
release_sbi(devid, mask);
}
}
}