diff options
| author | David S. Miller <davem@sunset.davemloft.net> | 2006-02-08 16:41:20 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-03-20 01:12:02 -0800 |
| commit | 1d2f1f90a1e004b0c1b8a73ed4394a93f09104b3 (patch) | |
| tree | 2fcc0840b52218631020311d7b6d785e9a15db6a /arch/sparc64/kernel/irq.c | |
| parent | 5b0c0572fcd6204675c5f7ddfa572b5017f817dd (diff) | |
[SPARC64]: Sun4v cross-call sending support.
Technically the hypervisor call supports sending in a list
of all cpus to get the cross-call, but I only pass in one
cpu at a time for now.
The multi-cpu support is there, just ifdef'd out so it's easy to
enable or delete it later.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/kernel/irq.c')
| -rw-r--r-- | arch/sparc64/kernel/irq.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/sparc64/kernel/irq.c b/arch/sparc64/kernel/irq.c index ff201c007e0..c80d2531ec4 100644 --- a/arch/sparc64/kernel/irq.c +++ b/arch/sparc64/kernel/irq.c @@ -900,6 +900,24 @@ static void __cpuinit init_one_kbuf(unsigned long *pa_ptr) *pa_ptr = __pa(page); } +static void __cpuinit init_cpu_send_mondo_info(struct trap_per_cpu *tb) +{ +#ifdef CONFIG_SMP + unsigned long page; + + BUILD_BUG_ON((NR_CPUS * sizeof(u16)) > (PAGE_SIZE - 64)); + + page = get_zeroed_page(GFP_ATOMIC); + if (!page) { + prom_printf("SUN4V: Error, cannot allocate cpu mondo page.\n"); + prom_halt(); + } + + tb->cpu_mondo_block_pa = __pa(page); + tb->cpu_list_pa = __pa(page + 64); +#endif +} + /* Allocate and init the mondo and error queues for this cpu. */ void __cpuinit sun4v_init_mondo_queues(void) { @@ -908,10 +926,14 @@ void __cpuinit sun4v_init_mondo_queues(void) 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_kbuf(&tb->resum_kernel_buf_pa); + init_one_mondo(&tb->nonresum_mondo_pa, HV_CPU_QUEUE_NONRES_ERROR); init_one_kbuf(&tb->nonresum_kernel_buf_pa); + + init_cpu_send_mondo_info(tb); } /* Only invoked on boot processor. */ |