[Qemu-devel] [PATCH 08/20] apci: switch evt to memory api

[Gerd Hoffmann <kraxel@redhat.com>]

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 hw/acpi.c       |   49 +++++++++++++++++++++++++++++++++++++++++++++++--
 hw/acpi.h       |    6 ++++--
 hw/acpi_piix4.c |   18 +-----------------
 hw/vt82c686.c   |   18 +-----------------
 4 files changed, 53 insertions(+), 38 deletions(-)

diff --git a/hw/acpi.c b/hw/acpi.c
index 956db95..e58e45f 100644
--- a/hw/acpi.c
+++ b/hw/acpi.c
@@ -275,7 +275,7 @@ uint16_t acpi_pm1_evt_get_sts(ACPIREGS *ar)
     return ar->pm1.evt.sts;
 }
 
-void acpi_pm1_evt_write_sts(ACPIREGS *ar, uint16_t val)
+static void acpi_pm1_evt_write_sts(ACPIREGS *ar, uint16_t val)
 {
     uint16_t pm1_sts = acpi_pm1_evt_get_sts(ar);
     if (pm1_sts & val & ACPI_BITMASK_TIMER_STATUS) {
@@ -285,7 +285,7 @@ void acpi_pm1_evt_write_sts(ACPIREGS *ar, uint16_t val)
     ar->pm1.evt.sts &= ~val;
 }
 
-void acpi_pm1_evt_write_en(ACPIREGS *ar, uint16_t val)
+static void acpi_pm1_evt_write_en(ACPIREGS *ar, uint16_t val)
 {
     ar->pm1.evt.en = val;
     qemu_system_wakeup_enable(QEMU_WAKEUP_REASON_RTC,
@@ -310,6 +310,51 @@ void acpi_pm1_evt_reset(ACPIREGS *ar)
     qemu_system_wakeup_enable(QEMU_WAKEUP_REASON_PMTIMER, 0);
 }
 
+static uint64_t acpi_pm_evt_read(void *opaque, hwaddr addr, unsigned width)
+{
+    ACPIREGS *ar = opaque;
+    switch (addr) {
+    case 0:
+        return acpi_pm1_evt_get_sts(ar);
+    case 2:
+        return ar->pm1.evt.en;
+    default:
+        return 0;
+    }
+}
+
+static void acpi_pm_evt_write(void *opaque, hwaddr addr, uint64_t val,
+                              unsigned width)
+{
+    ACPIREGS *ar = opaque;
+    switch (addr) {
+    case 0:
+        acpi_pm1_evt_write_sts(ar, val);
+        ar->pm1.evt.update_sci(ar);
+        break;
+    case 2:
+        acpi_pm1_evt_write_en(ar, val);
+        ar->pm1.evt.update_sci(ar);
+        break;
+    }
+}
+
+static const MemoryRegionOps acpi_pm_evt_ops = {
+    .read = acpi_pm_evt_read,
+    .write = acpi_pm_evt_write,
+    .valid.min_access_size = 2,
+    .valid.max_access_size = 2,
+    .endianness = DEVICE_LITTLE_ENDIAN,
+};
+
+void acpi_pm1_evt_init(ACPIREGS *ar, acpi_update_sci_fn update_sci,
+                       MemoryRegion *parent)
+{
+    ar->pm1.evt.update_sci = update_sci;
+    memory_region_init_io(&ar->pm1.evt.io, &acpi_pm_evt_ops, ar, "acpi-evt", 4);
+    memory_region_add_subregion(parent, 0, &ar->pm1.evt.io);
+}
+
 /* ACPI PM_TMR */
 void acpi_pm_tmr_update(ACPIREGS *ar, bool enable)
 {
diff --git a/hw/acpi.h b/hw/acpi.h
index 97aaab8..918d7f5 100644
--- a/hw/acpi.h
+++ b/hw/acpi.h
@@ -91,8 +91,10 @@ struct ACPIPMTimer {
 };
 
 struct ACPIPM1EVT {
+    MemoryRegion io;
     uint16_t sts;
     uint16_t en;
+    acpi_update_sci_fn update_sci;
 };
 
 struct ACPIPM1CNT {
@@ -135,10 +137,10 @@ static inline int64_t acpi_pm_tmr_get_clock(void)
 
 /* PM1a_EVT: piix and ich9 don't implement PM1b. */
 uint16_t acpi_pm1_evt_get_sts(ACPIREGS *ar);
-void acpi_pm1_evt_write_sts(ACPIREGS *ar, uint16_t val);
-void acpi_pm1_evt_write_en(ACPIREGS *ar, uint16_t val);
 void acpi_pm1_evt_power_down(ACPIREGS *ar);
 void acpi_pm1_evt_reset(ACPIREGS *ar);
+void acpi_pm1_evt_init(ACPIREGS *ar, acpi_update_sci_fn update_sci,
+                       MemoryRegion *parent);
 
 /* PM1a_CNT: piix and ich9 don't implement PM1b CNT. */
 void acpi_pm1_cnt_init(ACPIREGS *ar, MemoryRegion *parent);
diff --git a/hw/acpi_piix4.c b/hw/acpi_piix4.c
index c68a0e7..e4fe6f1 100644
--- a/hw/acpi_piix4.c
+++ b/hw/acpi_piix4.c
@@ -113,22 +113,12 @@ static void pm_tmr_timer(ACPIREGS *ar)
 static void pm_ioport_write(void *opaque, hwaddr addr, uint64_t val,
                             unsigned width)
 {
-    PIIX4PMState *s = opaque;
-
     if (width != 2) {
         PIIX4_DPRINTF("PM write port=0x%04x width=%d val=0x%08x\n",
                       (unsigned)addr, width, (unsigned)val);
     }
 
     switch(addr) {
-    case 0x00:
-        acpi_pm1_evt_write_sts(&s->ar, val);
-        pm_update_sci(s);
-        break;
-    case 0x02:
-        acpi_pm1_evt_write_en(&s->ar, val);
-        pm_update_sci(s);
-        break;
     default:
         break;
     }
@@ -138,16 +128,9 @@ static void pm_ioport_write(void *opaque, hwaddr addr, uint64_t val,
 
 static uint64_t pm_ioport_read(void *opaque, hwaddr addr, unsigned width)
 {
-    PIIX4PMState *s = opaque;
     uint32_t val;
 
     switch(addr) {
-    case 0x00:
-        val = acpi_pm1_evt_get_sts(&s->ar);
-        break;
-    case 0x02:
-        val = s->ar.pm1.evt.en;
-        break;
     default:
         val = 0;
         break;
@@ -456,6 +439,7 @@ static int piix4_pm_initfn(PCIDevice *dev)
 
     memory_region_init_io(&s->io, &pm_io_ops, s, "piix4-pm", 64);
     acpi_pm_tmr_init(&s->ar, pm_tmr_timer, &s->io);
+    acpi_pm1_evt_init(&s->ar, pm_tmr_timer, &s->io);
     acpi_pm1_cnt_init(&s->ar, &s->io);
     acpi_gpe_init(&s->ar, GPE_LEN);
 
diff --git a/hw/vt82c686.c b/hw/vt82c686.c
index b8f9c19..86ff7f9 100644
--- a/hw/vt82c686.c
+++ b/hw/vt82c686.c
@@ -199,18 +199,8 @@ static void pm_tmr_timer(ACPIREGS *ar)
 
 static void pm_ioport_writew(void *opaque, uint32_t addr, uint32_t val)
 {
-    VT686PMState *s = opaque;
-
     addr &= 0x0f;
     switch (addr) {
-    case 0x00:
-        acpi_pm1_evt_write_sts(&s->ar, val);
-        pm_update_sci(s);
-        break;
-    case 0x02:
-        acpi_pm1_evt_write_en(&s->ar, val);
-        pm_update_sci(s);
-        break;
     default:
         break;
     }
@@ -219,17 +209,10 @@ static void pm_ioport_writew(void *opaque, uint32_t addr, uint32_t val)
 
 static uint32_t pm_ioport_readw(void *opaque, uint32_t addr)
 {
-    VT686PMState *s = opaque;
     uint32_t val;
 
     addr &= 0x0f;
     switch (addr) {
-    case 0x00:
-        val = acpi_pm1_evt_get_sts(&s->ar);
-        break;
-    case 0x02:
-        val = s->ar.pm1.evt.en;
-        break;
     default:
         val = 0;
         break;
@@ -438,6 +421,7 @@ static int vt82c686b_pm_initfn(PCIDevice *dev)
 
     memory_region_init_io(&s->io, &pm_io_ops, s, "vt82c686-pm", 64);
     acpi_pm_tmr_init(&s->ar, pm_tmr_timer, &s->io);
+    acpi_pm1_evt_init(&s->ar, pm_tmr_timer, &s->io);
     acpi_pm1_cnt_init(&s->ar, &s->io);
 
     pm_smbus_init(&s->dev.qdev, &s->smb);
-- 
1.7.1