f224d35be9
DRC classes have an entity_sense method to determine (in a specific PAPR sense) the presence or absence of a device plugged into a DRC. However, we only have one implementation of the method, which explicitly tests for different DRC types. This changes it to instead have different method implementations for the two cases: "logical" and "physical" DRCs. While we're at it, the entity sense method always returns RTAS_OUT_SUCCESS, and the interesting value is returned via pass-by-reference. Simplify this to directly return the value we care about Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> Acked-by: Michael Roth <mdroth@linux.vnet.ibm.com>
247 lines
8.8 KiB
C
247 lines
8.8 KiB
C
/*
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* QEMU SPAPR Dynamic Reconfiguration Connector Implementation
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*
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* Copyright IBM Corp. 2014
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*
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* Authors:
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* Michael Roth <mdroth@linux.vnet.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#ifndef HW_SPAPR_DRC_H
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#define HW_SPAPR_DRC_H
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#include <libfdt.h>
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#include "qom/object.h"
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#include "hw/qdev.h"
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#define TYPE_SPAPR_DR_CONNECTOR "spapr-dr-connector"
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#define SPAPR_DR_CONNECTOR_GET_CLASS(obj) \
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OBJECT_GET_CLASS(sPAPRDRConnectorClass, obj, TYPE_SPAPR_DR_CONNECTOR)
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#define SPAPR_DR_CONNECTOR_CLASS(klass) \
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OBJECT_CLASS_CHECK(sPAPRDRConnectorClass, klass, \
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TYPE_SPAPR_DR_CONNECTOR)
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#define SPAPR_DR_CONNECTOR(obj) OBJECT_CHECK(sPAPRDRConnector, (obj), \
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TYPE_SPAPR_DR_CONNECTOR)
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#define TYPE_SPAPR_DRC_PHYSICAL "spapr-drc-physical"
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#define SPAPR_DRC_PHYSICAL_GET_CLASS(obj) \
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OBJECT_GET_CLASS(sPAPRDRConnectorClass, obj, TYPE_SPAPR_DRC_PHYSICAL)
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#define SPAPR_DRC_PHYSICAL_CLASS(klass) \
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OBJECT_CLASS_CHECK(sPAPRDRConnectorClass, klass, \
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TYPE_SPAPR_DRC_PHYSICAL)
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#define SPAPR_DRC_PHYSICAL(obj) OBJECT_CHECK(sPAPRDRConnector, (obj), \
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TYPE_SPAPR_DRC_PHYSICAL)
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#define TYPE_SPAPR_DRC_LOGICAL "spapr-drc-logical"
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#define SPAPR_DRC_LOGICAL_GET_CLASS(obj) \
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OBJECT_GET_CLASS(sPAPRDRConnectorClass, obj, TYPE_SPAPR_DRC_LOGICAL)
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#define SPAPR_DRC_LOGICAL_CLASS(klass) \
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OBJECT_CLASS_CHECK(sPAPRDRConnectorClass, klass, \
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TYPE_SPAPR_DRC_LOGICAL)
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#define SPAPR_DRC_LOGICAL(obj) OBJECT_CHECK(sPAPRDRConnector, (obj), \
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TYPE_SPAPR_DRC_LOGICAL)
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#define TYPE_SPAPR_DRC_CPU "spapr-drc-cpu"
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#define SPAPR_DRC_CPU_GET_CLASS(obj) \
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OBJECT_GET_CLASS(sPAPRDRConnectorClass, obj, TYPE_SPAPR_DRC_CPU)
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#define SPAPR_DRC_CPU_CLASS(klass) \
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OBJECT_CLASS_CHECK(sPAPRDRConnectorClass, klass, TYPE_SPAPR_DRC_CPU)
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#define SPAPR_DRC_CPU(obj) OBJECT_CHECK(sPAPRDRConnector, (obj), \
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TYPE_SPAPR_DRC_CPU)
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#define TYPE_SPAPR_DRC_PCI "spapr-drc-pci"
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#define SPAPR_DRC_PCI_GET_CLASS(obj) \
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OBJECT_GET_CLASS(sPAPRDRConnectorClass, obj, TYPE_SPAPR_DRC_PCI)
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#define SPAPR_DRC_PCI_CLASS(klass) \
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OBJECT_CLASS_CHECK(sPAPRDRConnectorClass, klass, TYPE_SPAPR_DRC_PCI)
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#define SPAPR_DRC_PCI(obj) OBJECT_CHECK(sPAPRDRConnector, (obj), \
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TYPE_SPAPR_DRC_PCI)
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#define TYPE_SPAPR_DRC_LMB "spapr-drc-lmb"
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#define SPAPR_DRC_LMB_GET_CLASS(obj) \
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OBJECT_GET_CLASS(sPAPRDRConnectorClass, obj, TYPE_SPAPR_DRC_LMB)
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#define SPAPR_DRC_LMB_CLASS(klass) \
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OBJECT_CLASS_CHECK(sPAPRDRConnectorClass, klass, TYPE_SPAPR_DRC_LMB)
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#define SPAPR_DRC_LMB(obj) OBJECT_CHECK(sPAPRDRConnector, (obj), \
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TYPE_SPAPR_DRC_LMB)
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/*
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* Various hotplug types managed by sPAPRDRConnector
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*
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* these are somewhat arbitrary, but to make things easier
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* when generating DRC indexes later we've aligned the bit
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* positions with the values used to assign DRC indexes on
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* pSeries. we use those values as bit shifts to allow for
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* the OR'ing of these values in various QEMU routines, but
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* for values exposed to the guest (via DRC indexes for
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* instance) we will use the shift amounts.
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*/
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typedef enum {
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SPAPR_DR_CONNECTOR_TYPE_SHIFT_CPU = 1,
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SPAPR_DR_CONNECTOR_TYPE_SHIFT_PHB = 2,
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SPAPR_DR_CONNECTOR_TYPE_SHIFT_VIO = 3,
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SPAPR_DR_CONNECTOR_TYPE_SHIFT_PCI = 4,
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SPAPR_DR_CONNECTOR_TYPE_SHIFT_LMB = 8,
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} sPAPRDRConnectorTypeShift;
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typedef enum {
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SPAPR_DR_CONNECTOR_TYPE_ANY = ~0,
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SPAPR_DR_CONNECTOR_TYPE_CPU = 1 << SPAPR_DR_CONNECTOR_TYPE_SHIFT_CPU,
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SPAPR_DR_CONNECTOR_TYPE_PHB = 1 << SPAPR_DR_CONNECTOR_TYPE_SHIFT_PHB,
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SPAPR_DR_CONNECTOR_TYPE_VIO = 1 << SPAPR_DR_CONNECTOR_TYPE_SHIFT_VIO,
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SPAPR_DR_CONNECTOR_TYPE_PCI = 1 << SPAPR_DR_CONNECTOR_TYPE_SHIFT_PCI,
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SPAPR_DR_CONNECTOR_TYPE_LMB = 1 << SPAPR_DR_CONNECTOR_TYPE_SHIFT_LMB,
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} sPAPRDRConnectorType;
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/*
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* set via set-indicator RTAS calls
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* as documented by PAPR+ 2.7 13.5.3.4, Table 177
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*
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* isolated: put device under firmware control
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* unisolated: claim OS control of device (may or may not be in use)
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*/
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typedef enum {
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SPAPR_DR_ISOLATION_STATE_ISOLATED = 0,
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SPAPR_DR_ISOLATION_STATE_UNISOLATED = 1
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} sPAPRDRIsolationState;
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/*
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* set via set-indicator RTAS calls
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* as documented by PAPR+ 2.7 13.5.3.4, Table 177
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*
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* unusable: mark device as unavailable to OS
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* usable: mark device as available to OS
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* exchange: (currently unused)
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* recover: (currently unused)
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*/
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typedef enum {
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SPAPR_DR_ALLOCATION_STATE_UNUSABLE = 0,
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SPAPR_DR_ALLOCATION_STATE_USABLE = 1,
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SPAPR_DR_ALLOCATION_STATE_EXCHANGE = 2,
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SPAPR_DR_ALLOCATION_STATE_RECOVER = 3
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} sPAPRDRAllocationState;
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/*
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* LED/visual indicator state
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*
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* set via set-indicator RTAS calls
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* as documented by PAPR+ 2.7 13.5.3.4, Table 177,
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* and PAPR+ 2.7 13.5.4.1, Table 180
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*
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* inactive: hotpluggable entity inactive and safely removable
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* active: hotpluggable entity in use and not safely removable
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* identify: (currently unused)
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* action: (currently unused)
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*/
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typedef enum {
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SPAPR_DR_INDICATOR_STATE_INACTIVE = 0,
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SPAPR_DR_INDICATOR_STATE_ACTIVE = 1,
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SPAPR_DR_INDICATOR_STATE_IDENTIFY = 2,
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SPAPR_DR_INDICATOR_STATE_ACTION = 3,
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} sPAPRDRIndicatorState;
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/*
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* returned via get-sensor-state RTAS calls
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* as documented by PAPR+ 2.7 13.5.3.3, Table 175:
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*
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* empty: connector slot empty (e.g. empty hotpluggable PCI slot)
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* present: connector slot populated and device available to OS
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* unusable: device not currently available to OS
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* exchange: (currently unused)
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* recover: (currently unused)
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*/
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typedef enum {
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SPAPR_DR_ENTITY_SENSE_EMPTY = 0,
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SPAPR_DR_ENTITY_SENSE_PRESENT = 1,
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SPAPR_DR_ENTITY_SENSE_UNUSABLE = 2,
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SPAPR_DR_ENTITY_SENSE_EXCHANGE = 3,
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SPAPR_DR_ENTITY_SENSE_RECOVER = 4,
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} sPAPRDREntitySense;
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typedef enum {
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SPAPR_DR_CC_RESPONSE_NEXT_SIB = 1, /* currently unused */
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SPAPR_DR_CC_RESPONSE_NEXT_CHILD = 2,
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SPAPR_DR_CC_RESPONSE_NEXT_PROPERTY = 3,
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SPAPR_DR_CC_RESPONSE_PREV_PARENT = 4,
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SPAPR_DR_CC_RESPONSE_SUCCESS = 0,
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SPAPR_DR_CC_RESPONSE_ERROR = -1,
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SPAPR_DR_CC_RESPONSE_CONTINUE = -2,
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SPAPR_DR_CC_RESPONSE_NOT_CONFIGURABLE = -9003,
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} sPAPRDRCCResponse;
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/* rtas-configure-connector state */
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typedef struct sPAPRConfigureConnectorState {
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int fdt_offset;
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int fdt_depth;
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} sPAPRConfigureConnectorState;
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typedef struct sPAPRDRConnector {
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/*< private >*/
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DeviceState parent;
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uint32_t id;
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Object *owner;
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const char *name;
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/* sensor/indicator states */
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uint32_t isolation_state;
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uint32_t allocation_state;
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uint32_t indicator_state;
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/* configure-connector state */
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void *fdt;
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int fdt_start_offset;
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bool configured;
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sPAPRConfigureConnectorState *ccs;
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bool awaiting_release;
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bool signalled;
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bool awaiting_allocation;
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bool awaiting_allocation_skippable;
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/* device pointer, via link property */
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DeviceState *dev;
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} sPAPRDRConnector;
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typedef struct sPAPRDRConnectorClass {
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/*< private >*/
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DeviceClass parent;
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/*< public >*/
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sPAPRDRConnectorTypeShift typeshift;
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const char *typename; /* used in device tree, PAPR 13.5.2.6 & C.6.1 */
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sPAPRDREntitySense (*dr_entity_sense)(sPAPRDRConnector *drc);
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/* accessors for guest-visible (generally via RTAS) DR state */
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uint32_t (*set_isolation_state)(sPAPRDRConnector *drc,
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sPAPRDRIsolationState state);
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uint32_t (*set_indicator_state)(sPAPRDRConnector *drc,
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sPAPRDRIndicatorState state);
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uint32_t (*set_allocation_state)(sPAPRDRConnector *drc,
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sPAPRDRAllocationState state);
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const char *(*get_name)(sPAPRDRConnector *drc);
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/* QEMU interfaces for managing hotplug operations */
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void (*attach)(sPAPRDRConnector *drc, DeviceState *d, void *fdt,
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int fdt_start_offset, bool coldplug, Error **errp);
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void (*detach)(sPAPRDRConnector *drc, DeviceState *d, Error **errp);
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bool (*release_pending)(sPAPRDRConnector *drc);
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void (*set_signalled)(sPAPRDRConnector *drc);
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} sPAPRDRConnectorClass;
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uint32_t spapr_drc_index(sPAPRDRConnector *drc);
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sPAPRDRConnectorType spapr_drc_type(sPAPRDRConnector *drc);
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sPAPRDRConnector *spapr_dr_connector_new(Object *owner, const char *type,
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uint32_t id);
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sPAPRDRConnector *spapr_drc_by_index(uint32_t index);
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sPAPRDRConnector *spapr_drc_by_id(const char *type, uint32_t id);
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int spapr_drc_populate_dt(void *fdt, int fdt_offset, Object *owner,
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uint32_t drc_type_mask);
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#endif /* HW_SPAPR_DRC_H */
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