1 /* 2 * QEMU SPAPR Dynamic Reconfiguration Connector Implementation 3 * 4 * Copyright IBM Corp. 2014 5 * 6 * Authors: 7 * Michael Roth <mdroth@linux.vnet.ibm.com> 8 * 9 * This work is licensed under the terms of the GNU GPL, version 2 or later. 10 * See the COPYING file in the top-level directory. 11 */ 12 13 #ifndef HW_SPAPR_DRC_H 14 #define HW_SPAPR_DRC_H 15 16 #include <libfdt.h> 17 #include "qom/object.h" 18 #include "hw/qdev.h" 19 20 #define TYPE_SPAPR_DR_CONNECTOR "spapr-dr-connector" 21 #define SPAPR_DR_CONNECTOR_GET_CLASS(obj) \ 22 OBJECT_GET_CLASS(sPAPRDRConnectorClass, obj, TYPE_SPAPR_DR_CONNECTOR) 23 #define SPAPR_DR_CONNECTOR_CLASS(klass) \ 24 OBJECT_CLASS_CHECK(sPAPRDRConnectorClass, klass, \ 25 TYPE_SPAPR_DR_CONNECTOR) 26 #define SPAPR_DR_CONNECTOR(obj) OBJECT_CHECK(sPAPRDRConnector, (obj), \ 27 TYPE_SPAPR_DR_CONNECTOR) 28 29 #define TYPE_SPAPR_DRC_PHYSICAL "spapr-drc-physical" 30 #define SPAPR_DRC_PHYSICAL_GET_CLASS(obj) \ 31 OBJECT_GET_CLASS(sPAPRDRConnectorClass, obj, TYPE_SPAPR_DRC_PHYSICAL) 32 #define SPAPR_DRC_PHYSICAL_CLASS(klass) \ 33 OBJECT_CLASS_CHECK(sPAPRDRConnectorClass, klass, \ 34 TYPE_SPAPR_DRC_PHYSICAL) 35 #define SPAPR_DRC_PHYSICAL(obj) OBJECT_CHECK(sPAPRDRConnector, (obj), \ 36 TYPE_SPAPR_DRC_PHYSICAL) 37 38 #define TYPE_SPAPR_DRC_LOGICAL "spapr-drc-logical" 39 #define SPAPR_DRC_LOGICAL_GET_CLASS(obj) \ 40 OBJECT_GET_CLASS(sPAPRDRConnectorClass, obj, TYPE_SPAPR_DRC_LOGICAL) 41 #define SPAPR_DRC_LOGICAL_CLASS(klass) \ 42 OBJECT_CLASS_CHECK(sPAPRDRConnectorClass, klass, \ 43 TYPE_SPAPR_DRC_LOGICAL) 44 #define SPAPR_DRC_LOGICAL(obj) OBJECT_CHECK(sPAPRDRConnector, (obj), \ 45 TYPE_SPAPR_DRC_LOGICAL) 46 47 #define TYPE_SPAPR_DRC_CPU "spapr-drc-cpu" 48 #define SPAPR_DRC_CPU_GET_CLASS(obj) \ 49 OBJECT_GET_CLASS(sPAPRDRConnectorClass, obj, TYPE_SPAPR_DRC_CPU) 50 #define SPAPR_DRC_CPU_CLASS(klass) \ 51 OBJECT_CLASS_CHECK(sPAPRDRConnectorClass, klass, TYPE_SPAPR_DRC_CPU) 52 #define SPAPR_DRC_CPU(obj) OBJECT_CHECK(sPAPRDRConnector, (obj), \ 53 TYPE_SPAPR_DRC_CPU) 54 55 #define TYPE_SPAPR_DRC_PCI "spapr-drc-pci" 56 #define SPAPR_DRC_PCI_GET_CLASS(obj) \ 57 OBJECT_GET_CLASS(sPAPRDRConnectorClass, obj, TYPE_SPAPR_DRC_PCI) 58 #define SPAPR_DRC_PCI_CLASS(klass) \ 59 OBJECT_CLASS_CHECK(sPAPRDRConnectorClass, klass, TYPE_SPAPR_DRC_PCI) 60 #define SPAPR_DRC_PCI(obj) OBJECT_CHECK(sPAPRDRConnector, (obj), \ 61 TYPE_SPAPR_DRC_PCI) 62 63 #define TYPE_SPAPR_DRC_LMB "spapr-drc-lmb" 64 #define SPAPR_DRC_LMB_GET_CLASS(obj) \ 65 OBJECT_GET_CLASS(sPAPRDRConnectorClass, obj, TYPE_SPAPR_DRC_LMB) 66 #define SPAPR_DRC_LMB_CLASS(klass) \ 67 OBJECT_CLASS_CHECK(sPAPRDRConnectorClass, klass, TYPE_SPAPR_DRC_LMB) 68 #define SPAPR_DRC_LMB(obj) OBJECT_CHECK(sPAPRDRConnector, (obj), \ 69 TYPE_SPAPR_DRC_LMB) 70 71 /* 72 * Various hotplug types managed by sPAPRDRConnector 73 * 74 * these are somewhat arbitrary, but to make things easier 75 * when generating DRC indexes later we've aligned the bit 76 * positions with the values used to assign DRC indexes on 77 * pSeries. we use those values as bit shifts to allow for 78 * the OR'ing of these values in various QEMU routines, but 79 * for values exposed to the guest (via DRC indexes for 80 * instance) we will use the shift amounts. 81 */ 82 typedef enum { 83 SPAPR_DR_CONNECTOR_TYPE_SHIFT_CPU = 1, 84 SPAPR_DR_CONNECTOR_TYPE_SHIFT_PHB = 2, 85 SPAPR_DR_CONNECTOR_TYPE_SHIFT_VIO = 3, 86 SPAPR_DR_CONNECTOR_TYPE_SHIFT_PCI = 4, 87 SPAPR_DR_CONNECTOR_TYPE_SHIFT_LMB = 8, 88 } sPAPRDRConnectorTypeShift; 89 90 typedef enum { 91 SPAPR_DR_CONNECTOR_TYPE_ANY = ~0, 92 SPAPR_DR_CONNECTOR_TYPE_CPU = 1 << SPAPR_DR_CONNECTOR_TYPE_SHIFT_CPU, 93 SPAPR_DR_CONNECTOR_TYPE_PHB = 1 << SPAPR_DR_CONNECTOR_TYPE_SHIFT_PHB, 94 SPAPR_DR_CONNECTOR_TYPE_VIO = 1 << SPAPR_DR_CONNECTOR_TYPE_SHIFT_VIO, 95 SPAPR_DR_CONNECTOR_TYPE_PCI = 1 << SPAPR_DR_CONNECTOR_TYPE_SHIFT_PCI, 96 SPAPR_DR_CONNECTOR_TYPE_LMB = 1 << SPAPR_DR_CONNECTOR_TYPE_SHIFT_LMB, 97 } sPAPRDRConnectorType; 98 99 /* 100 * set via set-indicator RTAS calls 101 * as documented by PAPR+ 2.7 13.5.3.4, Table 177 102 * 103 * isolated: put device under firmware control 104 * unisolated: claim OS control of device (may or may not be in use) 105 */ 106 typedef enum { 107 SPAPR_DR_ISOLATION_STATE_ISOLATED = 0, 108 SPAPR_DR_ISOLATION_STATE_UNISOLATED = 1 109 } sPAPRDRIsolationState; 110 111 /* 112 * set via set-indicator RTAS calls 113 * as documented by PAPR+ 2.7 13.5.3.4, Table 177 114 * 115 * unusable: mark device as unavailable to OS 116 * usable: mark device as available to OS 117 * exchange: (currently unused) 118 * recover: (currently unused) 119 */ 120 typedef enum { 121 SPAPR_DR_ALLOCATION_STATE_UNUSABLE = 0, 122 SPAPR_DR_ALLOCATION_STATE_USABLE = 1, 123 SPAPR_DR_ALLOCATION_STATE_EXCHANGE = 2, 124 SPAPR_DR_ALLOCATION_STATE_RECOVER = 3 125 } sPAPRDRAllocationState; 126 127 /* 128 * DR-indicator (LED/visual indicator) 129 * 130 * set via set-indicator RTAS calls 131 * as documented by PAPR+ 2.7 13.5.3.4, Table 177, 132 * and PAPR+ 2.7 13.5.4.1, Table 180 133 * 134 * inactive: hotpluggable entity inactive and safely removable 135 * active: hotpluggable entity in use and not safely removable 136 * identify: (currently unused) 137 * action: (currently unused) 138 */ 139 typedef enum { 140 SPAPR_DR_INDICATOR_INACTIVE = 0, 141 SPAPR_DR_INDICATOR_ACTIVE = 1, 142 SPAPR_DR_INDICATOR_IDENTIFY = 2, 143 SPAPR_DR_INDICATOR_ACTION = 3, 144 } sPAPRDRIndicatorState; 145 146 /* 147 * returned via get-sensor-state RTAS calls 148 * as documented by PAPR+ 2.7 13.5.3.3, Table 175: 149 * 150 * empty: connector slot empty (e.g. empty hotpluggable PCI slot) 151 * present: connector slot populated and device available to OS 152 * unusable: device not currently available to OS 153 * exchange: (currently unused) 154 * recover: (currently unused) 155 */ 156 typedef enum { 157 SPAPR_DR_ENTITY_SENSE_EMPTY = 0, 158 SPAPR_DR_ENTITY_SENSE_PRESENT = 1, 159 SPAPR_DR_ENTITY_SENSE_UNUSABLE = 2, 160 SPAPR_DR_ENTITY_SENSE_EXCHANGE = 3, 161 SPAPR_DR_ENTITY_SENSE_RECOVER = 4, 162 } sPAPRDREntitySense; 163 164 typedef enum { 165 SPAPR_DR_CC_RESPONSE_NEXT_SIB = 1, /* currently unused */ 166 SPAPR_DR_CC_RESPONSE_NEXT_CHILD = 2, 167 SPAPR_DR_CC_RESPONSE_NEXT_PROPERTY = 3, 168 SPAPR_DR_CC_RESPONSE_PREV_PARENT = 4, 169 SPAPR_DR_CC_RESPONSE_SUCCESS = 0, 170 SPAPR_DR_CC_RESPONSE_ERROR = -1, 171 SPAPR_DR_CC_RESPONSE_CONTINUE = -2, 172 SPAPR_DR_CC_RESPONSE_NOT_CONFIGURABLE = -9003, 173 } sPAPRDRCCResponse; 174 175 /* rtas-configure-connector state */ 176 typedef struct sPAPRConfigureConnectorState { 177 int fdt_offset; 178 int fdt_depth; 179 } sPAPRConfigureConnectorState; 180 181 typedef struct sPAPRDRConnector { 182 /*< private >*/ 183 DeviceState parent; 184 185 uint32_t id; 186 Object *owner; 187 188 /* DR-indicator */ 189 uint32_t dr_indicator; 190 191 /* sensor/indicator states */ 192 uint32_t isolation_state; 193 uint32_t allocation_state; 194 195 /* configure-connector state */ 196 void *fdt; 197 int fdt_start_offset; 198 bool configured; 199 sPAPRConfigureConnectorState *ccs; 200 201 bool awaiting_release; 202 bool awaiting_allocation; 203 204 /* device pointer, via link property */ 205 DeviceState *dev; 206 } sPAPRDRConnector; 207 208 typedef struct sPAPRDRConnectorClass { 209 /*< private >*/ 210 DeviceClass parent; 211 212 /*< public >*/ 213 sPAPRDRConnectorTypeShift typeshift; 214 const char *typename; /* used in device tree, PAPR 13.5.2.6 & C.6.1 */ 215 const char *drc_name_prefix; /* used other places in device tree */ 216 217 sPAPRDREntitySense (*dr_entity_sense)(sPAPRDRConnector *drc); 218 uint32_t (*isolate)(sPAPRDRConnector *drc); 219 uint32_t (*unisolate)(sPAPRDRConnector *drc); 220 221 /* QEMU interfaces for managing hotplug operations */ 222 bool (*release_pending)(sPAPRDRConnector *drc); 223 } sPAPRDRConnectorClass; 224 225 uint32_t spapr_drc_index(sPAPRDRConnector *drc); 226 sPAPRDRConnectorType spapr_drc_type(sPAPRDRConnector *drc); 227 228 sPAPRDRConnector *spapr_dr_connector_new(Object *owner, const char *type, 229 uint32_t id); 230 sPAPRDRConnector *spapr_drc_by_index(uint32_t index); 231 sPAPRDRConnector *spapr_drc_by_id(const char *type, uint32_t id); 232 int spapr_drc_populate_dt(void *fdt, int fdt_offset, Object *owner, 233 uint32_t drc_type_mask); 234 235 void spapr_drc_attach(sPAPRDRConnector *drc, DeviceState *d, void *fdt, 236 int fdt_start_offset, bool coldplug, Error **errp); 237 void spapr_drc_detach(sPAPRDRConnector *drc, DeviceState *d, Error **errp); 238 239 #endif /* HW_SPAPR_DRC_H */ 240