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acpi, acpi_piix, vt82c686: factor out PM1a EVT logic 

factor out ACPI PM1a EVT logic.
Later this will be used by ich9 acpi.

Cc: Blue Swirl <blauwirbel@gmail.com>
Cc: Huacai Chen <zltjiangshi@gmail.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Isaku Yamahata 2011-03-25 19:54:39 +09:00 committed by Aurelien Jarno
parent a54d41a8b9
commit 04dc308f68
4 changed files with 81 additions and 75 deletions
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37
hw/acpi.c
View File

@ -15,6 +15,7 @@
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>
*/
#include "sysemu.h"
#include "hw.h"
#include "pc.h"
#include "acpi.h"
@ -198,6 +199,42 @@ out:
return -1;
}
/* ACPI PM1a EVT */
uint16_t acpi_pm1_evt_get_sts(ACPIPM1EVT *pm1, int64_t overflow_time)
{
int64_t d = acpi_pm_tmr_get_clock();
if (d >= overflow_time) {
pm1->sts |= ACPI_BITMASK_TIMER_STATUS;
}
return pm1->sts;
}
void acpi_pm1_evt_write_sts(ACPIPM1EVT *pm1, ACPIPMTimer *tmr, uint16_t val)
{
uint16_t pm1_sts = acpi_pm1_evt_get_sts(pm1, tmr->overflow_time);
if (pm1_sts & val & ACPI_BITMASK_TIMER_STATUS) {
/* if TMRSTS is reset, then compute the new overflow time */
acpi_pm_tmr_calc_overflow_time(tmr);
}
pm1->sts &= ~val;
}
void acpi_pm1_evt_power_down(ACPIPM1EVT *pm1, ACPIPMTimer *tmr)
{
if (!pm1) {
qemu_system_shutdown_request();
} else if (pm1->en & ACPI_BITMASK_POWER_BUTTON_ENABLE) {
pm1->sts |= ACPI_BITMASK_POWER_BUTTON_STATUS;
tmr->update_sci(tmr);
}
}
void acpi_pm1_evt_reset(ACPIPM1EVT *pm1)
{
pm1->sts = 0;
pm1->en = 0;
}
/* ACPI PM_TMR */
void acpi_pm_tmr_update(ACPIPMTimer *tmr, bool enable)
{

13
hw/acpi.h
View File

@ -99,4 +99,17 @@ static inline int64_t acpi_pm_tmr_get_clock(void)
get_ticks_per_sec());
}
/* PM1a_EVT: piix and ich9 don't implement PM1b. */
struct ACPIPM1EVT
{
uint16_t sts;
uint16_t en;
};
typedef struct ACPIPM1EVT ACPIPM1EVT;
uint16_t acpi_pm1_evt_get_sts(ACPIPM1EVT *pm1, int64_t overflow_time);
void acpi_pm1_evt_write_sts(ACPIPM1EVT *pm1, ACPIPMTimer *tmr, uint16_t val);
void acpi_pm1_evt_power_down(ACPIPM1EVT *pm1, ACPIPMTimer *tmr);
void acpi_pm1_evt_reset(ACPIPM1EVT *pm1);
#endif /* !QEMU_HW_ACPI_H */

52
hw/acpi_piix4.c
View File

@ -54,8 +54,7 @@ struct pci_status {
typedef struct PIIX4PMState {
PCIDevice dev;
IORange ioport;
uint16_t pmsts;
uint16_t pmen;
ACPIPM1EVT pm1a;
uint16_t pmcntrl;
APMState apm;
@ -81,20 +80,12 @@ static void piix4_acpi_system_hot_add_init(PCIBus *bus, PIIX4PMState *s);
#define ACPI_ENABLE 0xf1
#define ACPI_DISABLE 0xf0
static int get_pmsts(PIIX4PMState *s)
{
int64_t d = acpi_pm_tmr_get_clock();
if (d >= s->tmr.overflow_time)
s->pmsts |= ACPI_BITMASK_TIMER_STATUS;
return s->pmsts;
}
static void pm_update_sci(PIIX4PMState *s)
{
int sci_level, pmsts;
pmsts = get_pmsts(s);
sci_level = (((pmsts & s->pmen) &
pmsts = acpi_pm1_evt_get_sts(&s->pm1a, s->tmr.overflow_time);
sci_level = (((pmsts & s->pm1a.en) &
(ACPI_BITMASK_RT_CLOCK_ENABLE |
ACPI_BITMASK_POWER_BUTTON_ENABLE |
ACPI_BITMASK_GLOBAL_LOCK_ENABLE |
@ -103,7 +94,7 @@ static void pm_update_sci(PIIX4PMState *s)
qemu_set_irq(s->irq, sci_level);
/* schedule a timer interruption if needed */
acpi_pm_tmr_update(&s->tmr, (s->pmen & ACPI_BITMASK_TIMER_ENABLE) &&
acpi_pm_tmr_update(&s->tmr, (s->pm1a.en & ACPI_BITMASK_TIMER_ENABLE) &&
!(pmsts & ACPI_BITMASK_TIMER_STATUS));
}
@ -125,19 +116,11 @@ static void pm_ioport_write(IORange *ioport, uint64_t addr, unsigned width,
switch(addr) {
case 0x00:
{
int pmsts;
pmsts = get_pmsts(s);
if (pmsts & val & ACPI_BITMASK_TIMER_STATUS) {
/* if TMRSTS is reset, then compute the new overflow time */
acpi_pm_tmr_calc_overflow_time(&s->tmr);
}
s->pmsts &= ~val;
pm_update_sci(s);
}
acpi_pm1_evt_write_sts(&s->pm1a, &s->tmr, val);
pm_update_sci(s);
break;
case 0x02:
s->pmen = val;
s->pm1a.en = val;
pm_update_sci(s);
break;
case 0x04:
@ -154,8 +137,8 @@ static void pm_ioport_write(IORange *ioport, uint64_t addr, unsigned width,
case 1:
/* ACPI_BITMASK_WAKE_STATUS should be set on resume.
Pretend that resume was caused by power button */
s->pmsts |= (ACPI_BITMASK_WAKE_STATUS |
ACPI_BITMASK_POWER_BUTTON_STATUS);
s->pm1a.sts |= (ACPI_BITMASK_WAKE_STATUS |
ACPI_BITMASK_POWER_BUTTON_STATUS);
qemu_system_reset_request();
if (s->cmos_s3) {
qemu_irq_raise(s->cmos_s3);
@ -181,10 +164,10 @@ static void pm_ioport_read(IORange *ioport, uint64_t addr, unsigned width,
switch(addr) {
case 0x00:
val = get_pmsts(s);
val = acpi_pm1_evt_get_sts(&s->pm1a, s->tmr.overflow_time);
break;
case 0x02:
val = s->pmen;
val = s->pm1a.en;
break;
case 0x04:
val = s->pmcntrl;
@ -291,8 +274,8 @@ static const VMStateDescription vmstate_acpi = {
.post_load = vmstate_acpi_post_load,
.fields = (VMStateField []) {
VMSTATE_PCI_DEVICE(dev, PIIX4PMState),
VMSTATE_UINT16(pmsts, PIIX4PMState),
VMSTATE_UINT16(pmen, PIIX4PMState),
VMSTATE_UINT16(pm1a.sts, PIIX4PMState),
VMSTATE_UINT16(pm1a.en, PIIX4PMState),
VMSTATE_UINT16(pmcntrl, PIIX4PMState),
VMSTATE_STRUCT(apm, PIIX4PMState, 0, vmstate_apm, APMState),
VMSTATE_TIMER(tmr.timer, PIIX4PMState),
@ -343,13 +326,10 @@ static void piix4_reset(void *opaque)
static void piix4_powerdown(void *opaque, int irq, int power_failing)
{
PIIX4PMState *s = opaque;
ACPIPM1EVT *pm1a = s? &s->pm1a: NULL;
ACPIPMTimer *tmr = s? &s->tmr: NULL;
if (!s) {
qemu_system_shutdown_request();
} else if (s->pmen & ACPI_BITMASK_POWER_BUTTON_ENABLE) {
s->pmsts |= ACPI_BITMASK_POWER_BUTTON_STATUS;
pm_update_sci(s);
}
acpi_pm1_evt_power_down(pm1a, tmr);
}
static int piix4_pm_initfn(PCIDevice *dev)

54
hw/vt82c686.c
View File

@ -156,8 +156,7 @@ static void vt82c686b_write_config(PCIDevice * d, uint32_t address,
typedef struct VT686PMState {
PCIDevice dev;
uint16_t pmsts;
uint16_t pmen;
ACPIPM1EVT pm1a;
uint16_t pmcntrl;
APMState apm;
ACPIPMTimer tmr;
@ -173,34 +172,19 @@ typedef struct VT686MC97State {
PCIDevice dev;
} VT686MC97State;
#define RTC_EN (1 << 10)
#define PWRBTN_EN (1 << 8)
#define GBL_EN (1 << 5)
#define TMROF_EN (1 << 0)
#define SUS_EN (1 << 13)
#define ACPI_ENABLE 0xf1
#define ACPI_DISABLE 0xf0
static int get_pmsts(VT686PMState *s)
{
int64_t d = acpi_pm_tmr_get_clock();
if (d >= s->tmr.overflow_time) {
s->pmsts |= ACPI_BITMASK_TIMER_STATUS;
}
return s->pmsts;
}
static void pm_update_sci(VT686PMState *s)
{
int sci_level, pmsts;
pmsts = get_pmsts(s);
sci_level = (((pmsts & s->pmen) &
(RTC_EN | PWRBTN_EN | GBL_EN | TMROF_EN)) != 0);
pmsts = acpi_pm1_evt_get_sts(&s->pm1a, s->tmr.overflow_time);
sci_level = (((pmsts & s->pm1a.en) &
(ACPI_BITMASK_RT_CLOCK_ENABLE |
ACPI_BITMASK_POWER_BUTTON_ENABLE |
ACPI_BITMASK_GLOBAL_LOCK_ENABLE |
ACPI_BITMASK_TIMER_ENABLE)) != 0);
qemu_set_irq(s->dev.irq[0], sci_level);
/* schedule a timer interruption if needed */
acpi_pm_tmr_update(&s->tmr, (s->pmen & ACPI_BITMASK_TIMER_ENABLE) &&
acpi_pm_tmr_update(&s->tmr, (s->pm1a.en & ACPI_BITMASK_TIMER_ENABLE) &&
!(pmsts & ACPI_BITMASK_TIMER_STATUS));
}
@ -217,19 +201,11 @@ static void pm_ioport_writew(void *opaque, uint32_t addr, uint32_t val)
addr &= 0x0f;
switch (addr) {
case 0x00:
{
int pmsts;
pmsts = get_pmsts(s);
if (pmsts & val & TMROF_EN) {
/* if TMRSTS is reset, then compute the new overflow time */
acpi_pm_tmr_calc_overflow_time(&s->tmr);
}
s->pmsts &= ~val;
pm_update_sci(s);
}
acpi_pm1_evt_write_sts(&s->pm1a, &s->tmr, val);
pm_update_sci(s);
break;
case 0x02:
s->pmen = val;
s->pm1a.en = val;
pm_update_sci(s);
break;
case 0x04:
@ -263,10 +239,10 @@ static uint32_t pm_ioport_readw(void *opaque, uint32_t addr)
addr &= 0x0f;
switch (addr) {
case 0x00:
val = get_pmsts(s);
val = acpi_pm1_evt_get_sts(&s->pm1a, s->tmr.overflow_time);
break;
case 0x02:
val = s->pmen;
val = s->pm1a.en;
break;
case 0x04:
val = s->pmcntrl;
@ -344,8 +320,8 @@ static const VMStateDescription vmstate_acpi = {
.post_load = vmstate_acpi_post_load,
.fields = (VMStateField []) {
VMSTATE_PCI_DEVICE(dev, VT686PMState),
VMSTATE_UINT16(pmsts, VT686PMState),
VMSTATE_UINT16(pmen, VT686PMState),
VMSTATE_UINT16(pm1a.sts, VT686PMState),
VMSTATE_UINT16(pm1a.en, VT686PMState),
VMSTATE_UINT16(pmcntrl, VT686PMState),
VMSTATE_STRUCT(apm, VT686PMState, 0, vmstate_apm, APMState),
VMSTATE_TIMER(tmr.timer, VT686PMState),