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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>
This commit is contained in:
Mike Day 2015-05-07 15:33:45 +10:00 committed by Alexander Graf
parent 094d20585e
commit 8c8639df32
2 changed files with 95 additions and 0 deletions
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84
hw/ppc/spapr_rtas.c
View File

@ -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)

11
include/hw/ppc/spapr.h
View File

@ -430,6 +430,17 @@ int spapr_allocate_irq_block(int num, bool lsi, bool msi);
#define RTAS_SYSPARM_DIAGNOSTICS_RUN_MODE 42
#define RTAS_SYSPARM_UUID 48
/* RTAS indicator/sensor types
*
* as defined by PAPR+ 2.7 7.3.5.4, Table 41
*
* NOTE: currently only DR-related sensors are implemented here
*/
#define RTAS_SENSOR_TYPE_ISOLATION_STATE 9001
#define RTAS_SENSOR_TYPE_DR 9002
#define RTAS_SENSOR_TYPE_ALLOCATION_STATE 9003
#define RTAS_SENSOR_TYPE_ENTITY_SENSE RTAS_SENSOR_TYPE_ALLOCATION_STATE
/* Possible values for the platform-processor-diagnostics-run-mode parameter
* of the RTAS ibm,get-system-parameter call.
*/