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[Qemu-devel] [PULL 23/40] spapr_rtas: add get-sensor-state RTAS interfac
From: |
Alexander Graf |
Subject: |
[Qemu-devel] [PULL 23/40] spapr_rtas: add get-sensor-state RTAS interface |
Date: |
Wed, 3 Jun 2015 23:45:24 +0200 |
From: Mike Day <address@hidden>
This interface allows a guest to read various platform/device sensors.
initially, we only implement support necessary to support hotplug:
reading of the dr-entity-sense sensor, which communicates the state of
a hotplugged resource/device to the guest (EMPTY/PRESENT/UNUSABLE).
See docs/specs/ppc-spapr-hotplug.txt for a complete description of
this interface.
Signed-off-by: Mike Day <address@hidden>
Signed-off-by: Michael Roth <address@hidden>
Reviewed-by: David Gibson <address@hidden>
Signed-off-by: David Gibson <address@hidden>
Signed-off-by: Alexander Graf <address@hidden>
---
hw/ppc/spapr_rtas.c | 43 +++++++++++++++++++++++++++++++++++++++++++
1 file changed, 43 insertions(+)
diff --git a/hw/ppc/spapr_rtas.c b/hw/ppc/spapr_rtas.c
index 6c741fa..f80beb2 100644
--- a/hw/ppc/spapr_rtas.c
+++ b/hw/ppc/spapr_rtas.c
@@ -377,6 +377,47 @@ out_unimplemented:
rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED);
}
+static void rtas_get_sensor_state(PowerPCCPU *cpu, sPAPREnvironment *spapr,
+ uint32_t token, uint32_t nargs,
+ target_ulong args, uint32_t nret,
+ target_ulong rets)
+{
+ uint32_t sensor_type;
+ uint32_t sensor_index;
+ sPAPRDRConnector *drc;
+ sPAPRDRConnectorClass *drck;
+ uint32_t entity_sense;
+
+ if (nargs != 2 || nret != 2) {
+ rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
+ return;
+ }
+
+ sensor_type = rtas_ld(args, 0);
+ sensor_index = rtas_ld(args, 1);
+
+ if (sensor_type != RTAS_SENSOR_TYPE_ENTITY_SENSE) {
+ /* currently only DR-related sensors are implemented */
+ DPRINTF("rtas_get_sensor_state: sensor/indicator not implemented:
%d\n",
+ sensor_type);
+ rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED);
+ return;
+ }
+
+ drc = spapr_dr_connector_by_index(sensor_index);
+ if (!drc) {
+ DPRINTF("rtas_get_sensor_state: invalid sensor/DRC index: %xh\n",
+ sensor_index);
+ rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
+ return;
+ }
+ drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc);
+ entity_sense = drck->entity_sense(drc);
+
+ rtas_st(rets, 0, RTAS_OUT_SUCCESS);
+ rtas_st(rets, 1, entity_sense);
+}
+
static struct rtas_call {
const char *name;
spapr_rtas_fn fn;
@@ -508,6 +549,8 @@ static void core_rtas_register_types(void)
rtas_get_power_level);
spapr_rtas_register(RTAS_SET_INDICATOR, "set-indicator",
rtas_set_indicator);
+ spapr_rtas_register(RTAS_GET_SENSOR_STATE, "get-sensor-state",
+ rtas_get_sensor_state);
}
type_init(core_rtas_register_types)
--
1.8.1.4
- [Qemu-devel] [PULL 00/40] ppc patch queue 2015-06-03, Alexander Graf, 2015/06/03
- [Qemu-devel] [PULL 02/40] dtc: Update dtc / libfdt submodule to version 1.4.0, Alexander Graf, 2015/06/03
- [Qemu-devel] [PULL 03/40] configure: Check for libfdt version 1.4.0, Alexander Graf, 2015/06/03
- [Qemu-devel] [PULL 01/40] macio: Convert to realize(), Alexander Graf, 2015/06/03
- [Qemu-devel] [PULL 10/40] spapr_iommu: Add separate trace points for PCI DMA operations, Alexander Graf, 2015/06/03
- [Qemu-devel] [PULL 23/40] spapr_rtas: add get-sensor-state RTAS interface,
Alexander Graf <=
- [Qemu-devel] [PULL 31/40] pci: make pci_bar useable outside pci.c, Alexander Graf, 2015/06/03
- [Qemu-devel] [PULL 05/40] spapr_iommu: Disable in-kernel IOMMU tables for >4GB windows, Alexander Graf, 2015/06/03
- [Qemu-devel] [PULL 33/40] spapr_pci: emit hotplug add/remove events during hotplug, Alexander Graf, 2015/06/03
- [Qemu-devel] [PULL 04/40] spapr_pci: Fix unsafe signed/unsigned comparisons, Alexander Graf, 2015/06/03
- [Qemu-devel] [PULL 30/40] spapr_pci: create DRConnectors for each PCI slot during PHB realize, Alexander Graf, 2015/06/03
- [Qemu-devel] [PULL 15/40] hw/ppc/spapr_iommu: Fix the check for invalid upper bits in liobn, Alexander Graf, 2015/06/03
- [Qemu-devel] [PULL 24/40] spapr: add rtas_st_buffer_direct() helper, Alexander Graf, 2015/06/03
- [Qemu-devel] [PULL 12/40] spapr_iommu: Make spapr_tce_find_by_liobn() public, Alexander Graf, 2015/06/03
- [Qemu-devel] [PULL 08/40] spapr_vio: Introduce a liobn number generating macros, Alexander Graf, 2015/06/03
- [Qemu-devel] [PULL 06/40] spapr_iommu: Make H_PUT_TCE_INDIRECT endian-safe, Alexander Graf, 2015/06/03