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[Qemu-devel] [PATCH v6 03/15] spapr_rtas: add get/set-power-level RTAS i
From: |
Michael Roth |
Subject: |
[Qemu-devel] [PATCH v6 03/15] spapr_rtas: add get/set-power-level RTAS interfaces |
Date: |
Thu, 26 Feb 2015 21:11:03 -0600 |
From: Nathan Fontenot <address@hidden>
These interfaces manage the power domains that guest devices are
assigned to and are used to power on/off devices. Currently we
only utilize 1 power domain, the 'live-insertion' domain, which
automates power management of plugged/unplugged devices, essentially
making these calls no-ops, but the RTAS interfaces are still required
by guest hotplug code and PAPR+.
See docs/specs/ppc-spapr-hotplug.txt for a complete description of
these interfaces.
Signed-off-by: Nathan Fontenot <address@hidden>
Signed-off-by: Michael Roth <address@hidden>
Reviewed-by: David Gibson <address@hidden>
---
hw/ppc/spapr_rtas.c | 54 +++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 54 insertions(+)
diff --git a/hw/ppc/spapr_rtas.c b/hw/ppc/spapr_rtas.c
index 0f1ae55..d7694cd 100644
--- a/hw/ppc/spapr_rtas.c
+++ b/hw/ppc/spapr_rtas.c
@@ -245,6 +245,56 @@ static void rtas_ibm_os_term(PowerPCCPU *cpu,
rtas_st(rets, 0, ret);
}
+static void rtas_set_power_level(PowerPCCPU *cpu, sPAPREnvironment *spapr,
+ uint32_t token, uint32_t nargs,
+ target_ulong args, uint32_t nret,
+ target_ulong rets)
+{
+ int32_t power_domain;
+
+ if (nargs != 2 || nret != 2) {
+ rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
+ return;
+ }
+
+ /* we currently only use a single, "live insert" powerdomain for
+ * hotplugged/dlpar'd resources, so the power is always live/full (100)
+ */
+ power_domain = rtas_ld(args, 0);
+ if (power_domain != -1) {
+ rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED);
+ return;
+ }
+
+ rtas_st(rets, 0, RTAS_OUT_SUCCESS);
+ rtas_st(rets, 1, 100);
+}
+
+static void rtas_get_power_level(PowerPCCPU *cpu, sPAPREnvironment *spapr,
+ uint32_t token, uint32_t nargs,
+ target_ulong args, uint32_t nret,
+ target_ulong rets)
+{
+ int32_t power_domain;
+
+ if (nargs != 1 || nret != 2) {
+ rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
+ return;
+ }
+
+ /* we currently only use a single, "live insert" powerdomain for
+ * hotplugged/dlpar'd resources, so the power is always live/full (100)
+ */
+ power_domain = rtas_ld(args, 0);
+ if (power_domain != -1) {
+ rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED);
+ return;
+ }
+
+ rtas_st(rets, 0, RTAS_OUT_SUCCESS);
+ rtas_st(rets, 1, 100);
+}
+
static struct rtas_call {
const char *name;
spapr_rtas_fn fn;
@@ -370,6 +420,10 @@ static void core_rtas_register_types(void)
rtas_ibm_set_system_parameter);
spapr_rtas_register(RTAS_IBM_OS_TERM, "ibm,os-term",
rtas_ibm_os_term);
+ spapr_rtas_register(RTAS_SET_POWER_LEVEL, "set-power-level",
+ rtas_set_power_level);
+ spapr_rtas_register(RTAS_GET_POWER_LEVEL, "get-power-level",
+ rtas_get_power_level);
}
type_init(core_rtas_register_types)
--
1.9.1
- [Qemu-devel] [PATCH v6 11/15] spapr_pci: add dynamic-reconfiguration option for spapr-pci-host-bridge, (continued)
- [Qemu-devel] [PATCH v6 11/15] spapr_pci: add dynamic-reconfiguration option for spapr-pci-host-bridge, Michael Roth, 2015/02/26
- [Qemu-devel] [PATCH v6 12/15] spapr_pci: create DRConnectors for each PCI slot during PHB realize, Michael Roth, 2015/02/26
- [Qemu-devel] [PATCH v6 01/15] docs: add sPAPR hotplug/dynamic-reconfiguration documentation, Michael Roth, 2015/02/26
- [Qemu-devel] [PATCH v6 02/15] spapr_drc: initial implementation of sPAPRDRConnector device, Michael Roth, 2015/02/26
- [Qemu-devel] [PATCH v6 14/15] spapr_pci: enable basic hotplug operations, Michael Roth, 2015/02/26
- [Qemu-devel] [PATCH v6 04/15] spapr_rtas: add set-indicator RTAS interface, Michael Roth, 2015/02/26
- [Qemu-devel] [PATCH v6 15/15] spapr_pci: emit hotplug add/remove events during hotplug, Michael Roth, 2015/02/26
- [Qemu-devel] [PATCH v6 03/15] spapr_rtas: add get/set-power-level RTAS interfaces,
Michael Roth <=
- [Qemu-devel] [PATCH v6 05/15] spapr_rtas: add get-sensor-state RTAS interface, Michael Roth, 2015/02/26
- [Qemu-devel] [PATCH v6 06/15] spapr: add rtas_st_buffer_direct() helper, Michael Roth, 2015/02/26
- [Qemu-devel] [PATCH v6 07/15] spapr_rtas: add ibm, configure-connector RTAS interface, Michael Roth, 2015/02/26
- [Qemu-devel] [PATCH v6 08/15] spapr_events: re-use EPOW event infrastructure for hotplug events, Michael Roth, 2015/02/26