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[SPARC64]: Fill holes in hypervisor APIs and fix KTSB registry.

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Several interfaces were missing and others misnumbered or
improperly documented.

Also, make sure to check the return value when registering
the kernel TSBs with the hypervisor.  This helped to find
the 4MB kernel TSB alignment bug fixed in a previous changeset.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2007-05-29 02:22:14 -07:00
parent 2d9e2763c2
commit 7db35f31cb
4 changed files with 1163 additions and 110 deletions
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32
arch/sparc64/kernel/time.c
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@@ -680,22 +680,14 @@ static int starfire_set_time(u32 val)
static u32 hypervisor_get_time(void)
{
register unsigned long func asm("%o5");
register unsigned long arg0 asm("%o0");
register unsigned long arg1 asm("%o1");
unsigned long ret, time;
int retries = 10000;
retry:
func = HV_FAST_TOD_GET;
arg0 = 0;
arg1 = 0;
__asm__ __volatile__("ta %6"
: "=&r" (func), "=&r" (arg0), "=&r" (arg1)
: "0" (func), "1" (arg0), "2" (arg1),
"i" (HV_FAST_TRAP));
if (arg0 == HV_EOK)
return arg1;
if (arg0 == HV_EWOULDBLOCK) {
ret = sun4v_tod_get(&time);
if (ret == HV_EOK)
return time;
if (ret == HV_EWOULDBLOCK) {
if (--retries > 0) {
udelay(100);
goto retry;
@@ -709,20 +701,14 @@ retry:
static int hypervisor_set_time(u32 secs)
{
register unsigned long func asm("%o5");
register unsigned long arg0 asm("%o0");
unsigned long ret;
int retries = 10000;
retry:
func = HV_FAST_TOD_SET;
arg0 = secs;
__asm__ __volatile__("ta %4"
: "=&r" (func), "=&r" (arg0)
: "0" (func), "1" (arg0),
"i" (HV_FAST_TRAP));
if (arg0 == HV_EOK)
ret = sun4v_tod_set(secs);
if (ret == HV_EOK)
return 0;
if (arg0 == HV_EWOULDBLOCK) {
if (ret == HV_EWOULDBLOCK) {
if (--retries > 0) {
udelay(100);
goto retry;