luck/tmp_suning_uos_patched
1
0
Fork 1
Code Issues Pull Requests Packages Projects Releases Wiki Activity

[SPARC64]: Allocate and register the 4 sun4v mondo queues at bootup.

Browse Source 
Needs to occur before we enable PSTATE_IE in %pstate.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2006-02-08 00:08:23 -08:00
parent e088ad7ca3
commit ac29c11d4c
2 changed files with 59 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

48
arch/sparc64/kernel/irq.c
View File

@ -855,6 +855,51 @@ void init_irqwork_curcpu(void)
memset(__irq_work + cpu, 0, sizeof(struct irq_work_struct));
}
static void __cpuinit init_one_mondo(unsigned long *pa_ptr, unsigned long type)
{
register unsigned long func __asm__("%o0");
register unsigned long arg0 __asm__("%o1");
register unsigned long arg1 __asm__("%o2");
register unsigned long arg2 __asm__("%o3");
unsigned long page = get_zeroed_page(GFP_ATOMIC);
if (!page) {
prom_printf("SUN4V: Error, cannot allocate mondo queue.\n");
prom_halt();
}
*pa_ptr = __pa(page);
func = HV_FAST_CPU_QCONF;
arg0 = type;
arg1 = *pa_ptr;
arg2 = 128; /* XXX Implied by Niagara queue offsets. XXX */
__asm__ __volatile__("ta %8"
: "=&r" (func), "=&r" (arg0),
"=&r" (arg1), "=&r" (arg2)
: "0" (func), "1" (arg0),
"2" (arg1), "3" (arg2),
"i" (HV_FAST_TRAP));
if (func != HV_EOK) {
prom_printf("SUN4V: cpu_qconf(%lu) failed with error %lu\n",
type, func);
prom_halt();
}
}
/* Allocate and init the mondo queues for this cpu. */
void __cpuinit sun4v_init_mondo_queues(void)
{
int cpu = hard_smp_processor_id();
struct trap_per_cpu *tb = &trap_block[cpu];
init_one_mondo(&tb->cpu_mondo_pa, HV_CPU_QUEUE_CPU_MONDO);
init_one_mondo(&tb->dev_mondo_pa, HV_CPU_QUEUE_DEVICE_MONDO);
init_one_mondo(&tb->resum_mondo_pa, HV_CPU_QUEUE_RES_ERROR);
init_one_mondo(&tb->nonresum_mondo_pa, HV_CPU_QUEUE_NONRES_ERROR);
}
/* Only invoked on boot processor. */
void __init init_IRQ(void)
{
@ -862,6 +907,9 @@ void __init init_IRQ(void)
kill_prom_timer();
memset(&ivector_table[0], 0, sizeof(ivector_table));
if (tlb_type == hypervisor)
sun4v_init_mondo_queues();
/* We need to clear any IRQ's pending in the soft interrupt
* registers, a spurious one could be left around from the
* PROM timer which we just disabled.

12
arch/sparc64/kernel/trampoline.S
View File

@ -309,7 +309,17 @@ do_unlock:
call init_irqwork_curcpu
nop
call init_cur_cpu_trap
sethi %hi(tlb_type), %g3
lduw [%g3 + %lo(tlb_type)], %g2
cmp %g2, 3
bne,pt %icc, 1f
nop
call sun4v_init_mondo_queues
nop
1: call init_cur_cpu_trap
nop
/* Start using proper page size encodings in ctx register. */