redonkable/alistair23-linux
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[SPARC64]: Register kernel TSB with hypervisor.

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We do this right after we take over the trap table from OBP.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2006-02-11 14:41:18 -08:00
parent 459b6e621e
commit 490384e752
3 changed files with 73 additions and 2 deletions
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4
arch/sparc64/kernel/smp.c
View file

@ -122,8 +122,10 @@ void __init smp_callin(void)
__local_per_cpu_offset = __per_cpu_offset(cpuid);
if (tlb_type == hypervisor)
if (tlb_type == hypervisor) {
sun4v_register_fault_status();
sun4v_ktsb_register();
}
__flush_tlb_all();

70
arch/sparc64/mm/init.c
View file

@ -1109,6 +1109,69 @@ static void __init tsb_phys_patch(void)
}
}
/* Don't mark as init, we give this to the Hypervisor. */
static struct hv_tsb_descr ktsb_descr[2];
extern struct tsb swapper_tsb[KERNEL_TSB_NENTRIES];
static void __init sun4v_ktsb_init(void)
{
unsigned long ktsb_pa;
ktsb_pa = kern_base + ((unsigned long)&swapper_tsb[0] - KERNBASE);
switch (PAGE_SIZE) {
case 8 * 1024:
default:
ktsb_descr[0].pgsz_idx = HV_PGSZ_IDX_8K;
ktsb_descr[0].pgsz_mask = HV_PGSZ_MASK_8K;
break;
case 64 * 1024:
ktsb_descr[0].pgsz_idx = HV_PGSZ_IDX_64K;
ktsb_descr[0].pgsz_mask = HV_PGSZ_MASK_64K;
break;
case 512 * 1024:
ktsb_descr[0].pgsz_idx = HV_PGSZ_IDX_512K;
ktsb_descr[0].pgsz_mask = HV_PGSZ_MASK_512K;
break;
case 4 * 1024 * 1024:
ktsb_descr[0].pgsz_idx = HV_PGSZ_IDX_4MB;
ktsb_descr[0].pgsz_mask = HV_PGSZ_MASK_4MB;
break;
};
ktsb_descr[0].assoc = 0;
ktsb_descr[0].num_ttes = KERNEL_TSB_NENTRIES;
ktsb_descr[0].ctx_idx = 0;
ktsb_descr[0].tsb_base = ktsb_pa;
ktsb_descr[0].resv = 0;
/* XXX When we have a kernel large page size TSB, describe
* XXX it in ktsb_descr[1] here.
*/
}
void __cpuinit sun4v_ktsb_register(void)
{
register unsigned long func asm("%o5");
register unsigned long arg0 asm("%o0");
register unsigned long arg1 asm("%o1");
unsigned long pa;
pa = kern_base + ((unsigned long)&ktsb_descr[0] - KERNBASE);
func = HV_FAST_MMU_TSB_CTX0;
/* XXX set arg0 to 2 when we use ktsb_descr[1], see above XXX */
arg0 = 1;
arg1 = pa;
__asm__ __volatile__("ta %6"
: "=&r" (func), "=&r" (arg0), "=&r" (arg1)
: "0" (func), "1" (arg0), "2" (arg1),
"i" (HV_FAST_TRAP));
}
/* paging_init() sets up the page tables */
extern void cheetah_ecache_flush_init(void);
@ -1129,8 +1192,10 @@ void __init paging_init(void)
tlb_type == hypervisor)
tsb_phys_patch();
if (tlb_type == hypervisor)
if (tlb_type == hypervisor) {
sun4v_patch_tlb_handlers();
sun4v_ktsb_init();
}
/* Find available physical memory... */
read_obp_memory("available", &pavail[0], &pavail_ents);
@ -1171,6 +1236,9 @@ void __init paging_init(void)
__flush_tlb_all();
if (tlb_type == hypervisor)
sun4v_ktsb_register();
/* Setup bootmem... */
pages_avail = 0;
last_valid_pfn = end_pfn = bootmem_init(&pages_avail);

1
include/asm-sparc64/pgtable.h
View file

@ -438,6 +438,7 @@ extern unsigned long get_fb_unmapped_area(struct file *filp, unsigned long,
extern void pgtable_cache_init(void);
extern void sun4v_register_fault_status(void);
extern void sun4v_ktsb_register(void);
#endif /* !(__ASSEMBLY__) */