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author | Mike Day <ncmike@ncultra.org> | 2015-05-07 15:33:45 +1000 |
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committer | Alexander Graf <agraf@suse.de> | 2015-06-03 23:56:53 +0200 |
commit | 8c8639df32f19d5ca9bf6a823ac83e298a188fd1 (patch) | |
tree | bcf911302cf04c8a271802fa38e3868f29a72029 /hw/ppc | |
parent | 094d20585ecdcd31959b1b88a390b4d2c4cfeab7 (diff) | |
download | hqemu-8c8639df32f19d5ca9bf6a823ac83e298a188fd1.zip hqemu-8c8639df32f19d5ca9bf6a823ac83e298a188fd1.tar.gz |
spapr_rtas: add set-indicator RTAS interface
This interface allows a guest to control various platform/device
sensors. Initially, we only implement support necessary to control
sensors that are required for hotplug: DR connector indicators/LEDs,
resource allocation state, and resource isolation state.
See docs/specs/ppc-spapr-hotplug.txt for a complete description of
this interface.
Signed-off-by: Mike Day <ncmike@ncultra.org>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'hw/ppc')
-rw-r--r-- | hw/ppc/spapr_rtas.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/hw/ppc/spapr_rtas.c b/hw/ppc/spapr_rtas.c index d7694cd..6c741fa 100644 --- a/hw/ppc/spapr_rtas.c +++ b/hw/ppc/spapr_rtas.c @@ -35,6 +35,18 @@ #include "qapi-event.h" #include <libfdt.h> +#include "hw/ppc/spapr_drc.h" + +/* #define DEBUG_SPAPR */ + +#ifdef DEBUG_SPAPR +#define DPRINTF(fmt, ...) \ + do { fprintf(stderr, fmt, ## __VA_ARGS__); } while (0) +#else +#define DPRINTF(fmt, ...) \ + do { } while (0) +#endif + static void rtas_display_character(PowerPCCPU *cpu, sPAPREnvironment *spapr, uint32_t token, uint32_t nargs, @@ -295,6 +307,76 @@ static void rtas_get_power_level(PowerPCCPU *cpu, sPAPREnvironment *spapr, rtas_st(rets, 1, 100); } +static bool sensor_type_is_dr(uint32_t sensor_type) +{ + switch (sensor_type) { + case RTAS_SENSOR_TYPE_ISOLATION_STATE: + case RTAS_SENSOR_TYPE_DR: + case RTAS_SENSOR_TYPE_ALLOCATION_STATE: + return true; + } + + return false; +} + +static void rtas_set_indicator(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; + uint32_t sensor_state; + sPAPRDRConnector *drc; + sPAPRDRConnectorClass *drck; + + if (nargs != 3 || nret != 1) { + rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); + return; + } + + sensor_type = rtas_ld(args, 0); + sensor_index = rtas_ld(args, 1); + sensor_state = rtas_ld(args, 2); + + if (!sensor_type_is_dr(sensor_type)) { + goto out_unimplemented; + } + + /* if this is a DR sensor we can assume sensor_index == drc_index */ + drc = spapr_dr_connector_by_index(sensor_index); + if (!drc) { + DPRINTF("rtas_set_indicator: invalid sensor/DRC index: %xh\n", + sensor_index); + rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); + return; + } + drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); + + switch (sensor_type) { + case RTAS_SENSOR_TYPE_ISOLATION_STATE: + drck->set_isolation_state(drc, sensor_state); + break; + case RTAS_SENSOR_TYPE_DR: + drck->set_indicator_state(drc, sensor_state); + break; + case RTAS_SENSOR_TYPE_ALLOCATION_STATE: + drck->set_allocation_state(drc, sensor_state); + break; + default: + goto out_unimplemented; + } + + rtas_st(rets, 0, RTAS_OUT_SUCCESS); + return; + +out_unimplemented: + /* currently only DR-related sensors are implemented */ + DPRINTF("rtas_set_indicator: sensor/indicator not implemented: %d\n", + sensor_type); + rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED); +} + static struct rtas_call { const char *name; spapr_rtas_fn fn; @@ -424,6 +506,8 @@ static void core_rtas_register_types(void) rtas_set_power_level); spapr_rtas_register(RTAS_GET_POWER_LEVEL, "get-power-level", rtas_get_power_level); + spapr_rtas_register(RTAS_SET_INDICATOR, "set-indicator", + rtas_set_indicator); } type_init(core_rtas_register_types) |