ACPICA: Add support for multiple notify handlers

This change adds support to allow multiple notify handlers on
Device, ThermalZone, and Processor objects. Also re-worked
and restructured the entire notify support code for handler
installation, handler removal, notify event queuing, and notify
dispatch to handler.

Extends and updates original commit 3f0be67("ACPI / ACPICA: Multiple
system notify handlers per device") by Rafael Wysocki.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 15 insertions, 10 deletions

diff --git a/drivers/acpi/acpica/exdump.c b/drivers/acpi/acpica/exdump.c
index 836fe76e65d0..26c56545804d 100644
--- a/drivers/acpi/acpica/exdump.c
+++ b/drivers/acpi/acpica/exdump.c
@@ -109,9 +109,9 @@ static struct acpi_exdump_info acpi_ex_dump_package[5] = {
 static struct acpi_exdump_info acpi_ex_dump_device[4] = {
         {ACPI_EXD_INIT, ACPI_EXD_TABLE_SIZE(acpi_ex_dump_device), NULL},
         {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(device.handler), "Handler"},
-        {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(device.system_notify),
+        {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(device.notify_list[0]),
          "System Notify"},
-        {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(device.device_notify),
+        {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(device.notify_list[1]),
          "Device Notify"}
 };
 
@@ -158,9 +158,9 @@ static struct acpi_exdump_info acpi_ex_dump_power[5] = {
          "System Level"},
         {ACPI_EXD_UINT32, ACPI_EXD_OFFSET(power_resource.resource_order),
          "Resource Order"},
-        {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(power_resource.system_notify),
+        {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(power_resource.notify_list[0]),
          "System Notify"},
-        {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(power_resource.device_notify),
+        {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(power_resource.notify_list[1]),
          "Device Notify"}
 };
 
@@ -169,18 +169,18 @@ static struct acpi_exdump_info acpi_ex_dump_processor[7] = {
         {ACPI_EXD_UINT8, ACPI_EXD_OFFSET(processor.proc_id), "Processor ID"},
         {ACPI_EXD_UINT8, ACPI_EXD_OFFSET(processor.length), "Length"},
         {ACPI_EXD_ADDRESS, ACPI_EXD_OFFSET(processor.address), "Address"},
-        {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(processor.system_notify),
+        {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(processor.notify_list[0]),
          "System Notify"},
-        {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(processor.device_notify),
+        {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(processor.notify_list[1]),
          "Device Notify"},
         {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(processor.handler), "Handler"}
 };
 
 static struct acpi_exdump_info acpi_ex_dump_thermal[4] = {
         {ACPI_EXD_INIT, ACPI_EXD_TABLE_SIZE(acpi_ex_dump_thermal), NULL},
-        {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(thermal_zone.system_notify),
+        {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(thermal_zone.notify_list[0]),
          "System Notify"},
-        {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(thermal_zone.device_notify),
+        {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(thermal_zone.notify_list[1]),
          "Device Notify"},
         {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(thermal_zone.handler), "Handler"}
 };
@@ -241,10 +241,15 @@ static struct acpi_exdump_info acpi_ex_dump_address_handler[6] = {
         {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(address_space.context), "Context"}
 };
 
-static struct acpi_exdump_info acpi_ex_dump_notify[3] = {
+static struct acpi_exdump_info acpi_ex_dump_notify[7] = {
         {ACPI_EXD_INIT, ACPI_EXD_TABLE_SIZE(acpi_ex_dump_notify), NULL},
         {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(notify.node), "Node"},
-        {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(notify.context), "Context"}
+        {ACPI_EXD_UINT32, ACPI_EXD_OFFSET(notify.handler_type), "Handler Type"},
+        {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(notify.handler), "Handler"},
+        {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(notify.context), "Context"},
+        {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(notify.next[0]),
+         "Next System Notify"},
+        {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(notify.next[1]), "Next Device Notify"}
 };
 
 /* Miscellaneous tables */