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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] x86, hvm: cleanup hpet.c vcpu handling same as i8254.c/rtc.c
# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1246972127 -3600
# Node ID 2fadef1b008f8db66b69cd01cadac1629421f1fa
# Parent 7ce4f3675c9bc4478d71ec28a837a3bba08b5d52
x86,hvm: cleanup hpet.c vcpu handling same as i8254.c/rtc.c
- introduce macros: domain_vhpet, vcpu_vhpet, vhpet_domain, vhpet_vcpu
- remove *vcpu field from struct HPETState
- modify guest_time_hpet() takes *vhpet instead of *vcpu as 1st
- argument
Signed-off-by: Kouya Shimura <kouya@xxxxxxxxxxxxxx>
---
xen/arch/x86/hvm/hpet.c | 36 +++++++++++++++++++++---------------
xen/include/asm-x86/hvm/vpt.h | 1 -
2 files changed, 21 insertions(+), 16 deletions(-)
diff -r 7ce4f3675c9b -r 2fadef1b008f xen/arch/x86/hvm/hpet.c
--- a/xen/arch/x86/hvm/hpet.c Tue Jul 07 14:07:08 2009 +0100
+++ b/xen/arch/x86/hvm/hpet.c Tue Jul 07 14:08:47 2009 +0100
@@ -24,6 +24,12 @@
#include <xen/sched.h>
#include <xen/event.h>
+#define domain_vhpet(d) (&(d)->arch.hvm_domain.pl_time.vhpet)
+#define vcpu_vhpet(vcpu) (domain_vhpet((vcpu)->domain))
+#define vhpet_domain(hpet) (container_of((hpet), struct domain, \
+ arch.hvm_domain.pl_time.vhpet))
+#define vhpet_vcpu(hpet) (vhpet_domain(hpet)->vcpu[0])
+
#define HPET_BASE_ADDRESS 0xfed00000ULL
#define HPET_MMAP_SIZE 1024
#define S_TO_NS 1000000000ULL /* 1s = 10^9 ns */
@@ -31,7 +37,8 @@
/* Frequency_of_Xen_systeme_time / frequency_of_HPET = 16 */
#define STIME_PER_HPET_TICK 16
-#define guest_time_hpet(v) (hvm_get_guest_time(v) / STIME_PER_HPET_TICK)
+#define guest_time_hpet(hpet) \
+ (hvm_get_guest_time(vhpet_vcpu(hpet)) / STIME_PER_HPET_TICK)
#define HPET_ID 0x000
#define HPET_PERIOD 0x004
@@ -94,7 +101,7 @@ static inline uint64_t hpet_read_maincou
ASSERT(spin_is_locked(&h->lock));
if ( hpet_enabled(h) )
- return guest_time_hpet(h->vcpu) + h->mc_offset;
+ return guest_time_hpet(h) + h->mc_offset;
else
return h->hpet.mc64;
}
@@ -176,7 +183,7 @@ static int hpet_read(
struct vcpu *v, unsigned long addr, unsigned long length,
unsigned long *pval)
{
- HPETState *h = &v->domain->arch.hvm_domain.pl_time.vhpet;
+ HPETState *h = vcpu_vhpet(v);
unsigned long result;
uint64_t val;
@@ -230,7 +237,7 @@ static void hpet_set_timer(HPETState *h,
{
/* HPET specification requires PIT shouldn't generate
* interrupts if LegacyReplacementRoute is set for timer0 */
- PITState *pit = &h->vcpu->domain->arch.hvm_domain.pl_time.vpit;
+ PITState *pit = &vhpet_domain(h)->arch.hvm_domain.pl_time.vpit;
pit_stop_channel0_irq(pit);
}
@@ -272,7 +279,7 @@ static void hpet_set_timer(HPETState *h,
* being enabled (now).
*/
oneshot = !timer_is_periodic(h, tn);
- create_periodic_time(h->vcpu, &h->pt[tn],
+ create_periodic_time(vhpet_vcpu(h), &h->pt[tn],
hpet_tick_to_ns(h, diff),
oneshot ? 0 : hpet_tick_to_ns(h, h->hpet.period[tn]),
irq, NULL, NULL);
@@ -290,7 +297,7 @@ static int hpet_write(
struct vcpu *v, unsigned long addr,
unsigned long length, unsigned long val)
{
- HPETState *h = &v->domain->arch.hvm_domain.pl_time.vhpet;
+ HPETState *h = vcpu_vhpet(v);
uint64_t old_val, new_val;
int tn, i;
@@ -323,7 +330,7 @@ static int hpet_write(
if ( !(old_val & HPET_CFG_ENABLE) && (new_val & HPET_CFG_ENABLE) )
{
/* Enable main counter and interrupt generation. */
- h->mc_offset = h->hpet.mc64 - guest_time_hpet(h->vcpu);
+ h->mc_offset = h->hpet.mc64 - guest_time_hpet(h);
for ( i = 0; i < HPET_TIMER_NUM; i++ )
{
h->hpet.comparator64[i] =
@@ -337,7 +344,7 @@ static int hpet_write(
else if ( (old_val & HPET_CFG_ENABLE) && !(new_val & HPET_CFG_ENABLE) )
{
/* Halt main counter and disable interrupt generation. */
- h->hpet.mc64 = h->mc_offset + guest_time_hpet(h->vcpu);
+ h->hpet.mc64 = h->mc_offset + guest_time_hpet(h);
for ( i = 0; i < HPET_TIMER_NUM; i++ )
if ( timer_enabled(h, i) )
set_stop_timer(i);
@@ -487,13 +494,13 @@ struct hvm_mmio_handler hpet_mmio_handle
static int hpet_save(struct domain *d, hvm_domain_context_t *h)
{
- HPETState *hp = &d->arch.hvm_domain.pl_time.vhpet;
+ HPETState *hp = domain_vhpet(d);
int rc;
spin_lock(&hp->lock);
/* Write the proper value into the main counter */
- hp->hpet.mc64 = hp->mc_offset + guest_time_hpet(hp->vcpu);
+ hp->hpet.mc64 = hp->mc_offset + guest_time_hpet(hp);
/* Save the HPET registers */
rc = _hvm_init_entry(h, HVM_SAVE_CODE(HPET), 0, HVM_SAVE_LENGTH(HPET));
@@ -531,7 +538,7 @@ static int hpet_save(struct domain *d, h
static int hpet_load(struct domain *d, hvm_domain_context_t *h)
{
- HPETState *hp = &d->arch.hvm_domain.pl_time.vhpet;
+ HPETState *hp = domain_vhpet(d);
struct hvm_hw_hpet *rec;
uint64_t cmp;
int i;
@@ -572,7 +579,7 @@ static int hpet_load(struct domain *d, h
#undef C
/* Recalculate the offset between the main counter and guest time */
- hp->mc_offset = hp->hpet.mc64 - guest_time_hpet(hp->vcpu);
+ hp->mc_offset = hp->hpet.mc64 - guest_time_hpet(hp);
/* restart all timers */
@@ -590,14 +597,13 @@ HVM_REGISTER_SAVE_RESTORE(HPET, hpet_sav
void hpet_init(struct vcpu *v)
{
- HPETState *h = &v->domain->arch.hvm_domain.pl_time.vhpet;
+ HPETState *h = vcpu_vhpet(v);
int i;
memset(h, 0, sizeof(HPETState));
spin_lock_init(&h->lock);
- h->vcpu = v;
h->stime_freq = S_TO_NS;
h->hpet_to_ns_scale = ((S_TO_NS * STIME_PER_HPET_TICK) << 10) /
h->stime_freq;
@@ -622,7 +628,7 @@ void hpet_deinit(struct domain *d)
void hpet_deinit(struct domain *d)
{
int i;
- HPETState *h = &d->arch.hvm_domain.pl_time.vhpet;
+ HPETState *h = domain_vhpet(d);
spin_lock(&h->lock);
diff -r 7ce4f3675c9b -r 2fadef1b008f xen/include/asm-x86/hvm/vpt.h
--- a/xen/include/asm-x86/hvm/vpt.h Tue Jul 07 14:07:08 2009 +0100
+++ b/xen/include/asm-x86/hvm/vpt.h Tue Jul 07 14:08:47 2009 +0100
@@ -92,7 +92,6 @@ struct hpet_registers {
typedef struct HPETState {
struct hpet_registers hpet;
- struct vcpu *vcpu;
uint64_t stime_freq;
uint64_t hpet_to_ns_scale; /* hpet ticks to ns (multiplied by 2^10) */
uint64_t hpet_to_ns_limit; /* max hpet ticks convertable to ns */
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