KernelLand/Modules/Interfaces/UDI/management_agent.c

   1 /*
   2  * Acess2 UDI Layer
   3  * - By John Hodge (thePowersGang)
   4  *
   5  * management_agent.c
   6  * - Managment Agent
   7  */
   8 #define DEBUG   1
   9 #include <udi.h>
  10 #include <acess.h>
  11 #include <udi_internal.h>
  12 #include <udi_internal_ma.h>
  13
  14 // === CONSTANTS ===
  15
  16 // === PROTOTYPES ===
  17
  18 // === GLOBALS ===
  19 tUDI_DriverInstance     *gpUDI_ActiveInstances;
  20
  21 // === CODE ===
  22 tUDI_DriverInstance *UDI_MA_CreateInstance(tUDI_DriverModule *DriverModule,
  23         tUDI_DriverInstance *ParentInstance, tUDI_ChildBinding *ChildBinding)
  24 {
  25         tUDI_DriverInstance     *inst = NEW_wA(tUDI_DriverInstance, Regions, DriverModule->nRegions);
  26         udi_primary_init_t      *pri_init = DriverModule->InitInfo->primary_init_info;
  27         inst->Module = DriverModule;
  28         inst->Regions[0] = UDI_MA_InitRegion(inst, 0, 0, pri_init->rdata_size);
  29         udi_secondary_init_t    *sec_init = DriverModule->InitInfo->secondary_init_list;
  30         if( sec_init )
  31         {
  32                 for( int i = 0; sec_init[i].region_idx; i ++ )
  33                 {
  34                         inst->Regions[1+i] = UDI_MA_InitRegion(inst, i,
  35                                 sec_init[i].region_idx, sec_init[i].rdata_size);
  36                 }
  37         }
  38
  39         if( ParentInstance ) {
  40                 ASSERT(ChildBinding);
  41                 ChildBinding->BoundInstance = inst;
  42         }
  43         inst->Parent = ParentInstance;
  44         inst->ParentChildBinding = ChildBinding;
  45
  46         inst->ManagementChannel = UDI_CreateChannel_Blank(&cMetaLang_Management);
  47         UDI_BindChannel_Raw(inst->ManagementChannel, true,
  48                 inst, 0, 0, inst->Regions[0]->InitContext, pri_init->mgmt_ops);
  49 //      UDI_BindChannel_Raw(inst->ManagementChannel, false,
  50 //              NULL, 1, inst, &cUDI_MgmtOpsList);      // TODO: ops list for management agent?
  51
  52 //      for( int i = 0; i < DriverModule->nRegions; i ++ )
  53 //              Log("Rgn %i: %p", i, inst->Regions[i]);
  54
  55         LOG("Inst %s %p MA state =%i",
  56                 inst->Module->ModuleName, inst, UDI_MASTATE_USAGEIND);
  57         inst->CurState = UDI_MASTATE_USAGEIND;
  58         // Next State: _SECBIND
  59
  60         // Add to global list of active instances
  61         inst->Next = gpUDI_ActiveInstances;
  62         gpUDI_ActiveInstances = inst;
  63
  64         // Send usage indication
  65         udi_usage_cb_t *cb = (void*)udi_cb_alloc_internal_v(&cMetaLang_Management, UDI_MGMT_USAGE_CB_NUM,
  66                 0, pri_init->mgmt_scratch_requirement, inst->ManagementChannel
  67                 );
  68         UDI_GCB(cb)->initiator_context = inst;
  69         udi_usage_ind(cb, UDI_RESOURCES_NORMAL);
  70         // udi_usage_res causes next state transition
  71
  72         return inst;
  73 }
  74
  75 tUDI_DriverRegion *UDI_MA_InitRegion(tUDI_DriverInstance *Inst,
  76         udi_ubit16_t Index, udi_ubit16_t Type, size_t RDataSize)
  77 {
  78 //      ASSERTCR( RDataSize, <=, UDI_MIN_ALLOC_LIMIT, NULL );
  79         ASSERTCR( RDataSize, >=, sizeof(udi_init_context_t), NULL );
  80         tUDI_DriverRegion       *rgn = NEW(tUDI_DriverRegion,+RDataSize);
  81         rgn->InitContext = (void*)(rgn+1);
  82         rgn->InitContext->region_idx = Type;
  83 //      rgn->InitContext->limits
  84         return rgn;
  85 }
  86
  87 void UDI_MA_BeginEnumeration(tUDI_DriverInstance *Inst)
  88 {
  89         udi_primary_init_t *pri_init = Inst->Module->InitInfo->primary_init_info;
  90         udi_enumerate_cb_t      *ecb = (void*)udi_cb_alloc_internal_v(
  91                 &cMetaLang_Management, UDI_MGMT_ENUMERATE_CB_NUM,
  92                 0, pri_init->mgmt_scratch_requirement, Inst->ManagementChannel);
  93         UDI_GCB(ecb)->initiator_context = Inst;
  94         ecb->child_data = malloc(pri_init->child_data_size);
  95         ecb->attr_list = NEW(udi_instance_attr_list_t, *pri_init->enumeration_attr_list_length);
  96         ecb->attr_valid_length = 0;
  97         udi_enumerate_req(ecb, UDI_ENUMERATE_START);
  98         Threads_Yield();        // Yield to allow udi_enumerate_req to run
  99 }
 100
 101 /*
 102  * Returns number of matching attributes
 103  * If an attribute differs, returns 0
 104  */
 105 int UDI_MA_CheckDeviceMatch(int nDevAttr, udi_instance_attr_list_t *DevAttrs,
 106         int nEnumAttr, udi_instance_attr_list_t *EnumAttrs)
 107 {
 108         // TODO: Ask metalangauge instead
 109         int n_matches = 0;
 110         for( int i = 0; i < nDevAttr; i ++ )
 111         {
 112                 udi_instance_attr_list_t *dev_attr = &DevAttrs[i];
 113                 udi_instance_attr_list_t *enum_attr = NULL;
 114                 for( int j = 0; j < nEnumAttr; j ++ )
 115                 {
 116                         if( strcmp(dev_attr->attr_name, EnumAttrs[j].attr_name) == 0 ) {
 117                                 enum_attr = &EnumAttrs[j];
 118                                 break;
 119                         }
 120                 }
 121                 if( enum_attr )
 122                 {
 123                         //LOG("Match = '%s' (%i %x == %i %x)",
 124                         //      dev_attr->attr_name,
 125                         //      dev_attr->attr_length, UDI_ATTR32_GET(dev_attr->attr_value),
 126                         //      enum_attr->attr_length, UDI_ATTR32_GET(enum_attr->attr_value)
 127                         //      );
 128                         if( enum_attr->attr_length != dev_attr->attr_length )
 129                                 return 0;
 130                         if( memcmp(enum_attr->attr_value, dev_attr->attr_value, dev_attr->attr_length) != 0 )
 131                                 return 0;
 132                         n_matches ++;
 133                 }
 134                 else
 135                 {
 136                         // Attribute desired is missing, error?
 137                         LOG("attr '%s' missing", dev_attr->attr_name);
 138                 }
 139         }
 140         //LOG("n_matches = %i", n_matches);
 141         return n_matches;
 142 }
 143
 144 void UDI_MA_AddChild(udi_enumerate_cb_t *cb, udi_index_t ops_idx)
 145 {
 146         // Current side is MA, other is instance
 147         // TODO: Get region index too?
 148         tUDI_DriverInstance *inst = UDI_int_ChannelGetInstance( UDI_GCB(cb), true, NULL );
 149         //LOG("inst = %p", inst);
 150
 151         // Search for existing child with same child_ID and ops
 152         for( tUDI_ChildBinding *child = inst->FirstChild; child; child = child->Next )
 153         {
 154                 if( child->ChildID == cb->child_ID && child->Ops->ops_idx == ops_idx ) {
 155                         LOG("duplicate, not creating");
 156                         return;
 157                 }
 158         }
 159
 160         // Create a new child
 161         tUDI_ChildBinding *child = NEW_wA(tUDI_ChildBinding, Attribs, cb->attr_valid_length);
 162         child->Next = NULL;
 163         child->ChildID = cb->child_ID;
 164         child->Ops = UDI_int_GetOps(inst, ops_idx);
 165         child->BoundInstance = NULL;    // currently unbound
 166         child->BindOps = NULL;
 167         child->nAttribs = cb->attr_valid_length;
 168         memcpy(child->Attribs, cb->attr_list, sizeof(cb->attr_list[0])*cb->attr_valid_length);
 169
 170         // - Locate child_bind_ops definition
 171         for( int i = 0; i < inst->Module->nChildBindOps; i ++ )
 172         {
 173                 if( inst->Module->ChildBindOps[i].ops_idx == ops_idx ) {
 174                         child->BindOps = &inst->Module->ChildBindOps[i];
 175                         break;
 176                 }
 177         }
 178         if( !child->BindOps ) {
 179                 Log_Error("UDI", "Driver '%s' doesn't have a 'child_bind_ops' for %i",
 180                         inst->Module->ModuleName, ops_idx);
 181                 free(child);
 182                 return ;
 183         }
 184
 185         child->Next = inst->FirstChild;
 186         inst->FirstChild = child;
 187
 188         // and search for a handler
 189         tUDI_MetaLang   *metalang = UDI_int_GetMetaLang(inst->Module, child->Ops->meta_idx);
 190          int    best_level = 0;
 191         tUDI_DriverModule *best_module = NULL;
 192         for( tUDI_DriverModule *module = gpUDI_LoadedModules; module; module = module->Next )
 193         {
 194                 for( int i = 0; i < module->nDevices; i ++ )
 195                 {
 196                         //LOG("%s:%i %p ?== %p",
 197                         //      module->ModuleName, i,
 198                         //      module->Devices[i]->Metalang, metalang);
 199                         if( module->Devices[i]->Metalang != metalang )
 200                                 continue ;
 201
 202                         int level = UDI_MA_CheckDeviceMatch(
 203                                 module->Devices[i]->nAttribs, module->Devices[i]->Attribs,
 204                                 child->nAttribs, child->Attribs
 205                                 );
 206                         if( level > best_level ) {
 207                                 best_level = level;
 208                                 best_module = module;
 209                         }
 210                 }
 211         }
 212         if( best_module != NULL )
 213         {
 214                 UDI_MA_CreateInstance(best_module, inst, child);
 215         }
 216 }
 217
 218 void UDI_MA_BindParents(tUDI_DriverModule *Module)
 219 {
 220         // Scan active instances for enumerated children that can be handled by this module
 221         for( int i = 0; i < Module->nDevices; i ++ )
 222         {
 223                 // TODO: Have list of unbound enumerated children
 224                 for( tUDI_DriverInstance *inst = gpUDI_ActiveInstances; inst; inst = inst->Next )
 225                 {
 226                         // Loop children
 227                         for( tUDI_ChildBinding *child = inst->FirstChild; child; child = child->Next )
 228                         {
 229                                 if( child->BoundInstance )
 230                                         continue ;
 231                                 // TODO: Check metalangs
 232                                 // Check for match
 233                                 int level = UDI_MA_CheckDeviceMatch(
 234                                         Module->Devices[i]->nAttribs, Module->Devices[i]->Attribs,
 235                                         child->nAttribs, child->Attribs
 236                                         );
 237                                 // No match: Continue
 238                                 if( level == 0 )
 239                                         continue ;
 240                                 // Found a match, so create an instance (binding happens async)
 241                                 UDI_MA_CreateInstance(Module, inst, child);
 242                         }
 243                 }
 244         }
 245 }
 246
 247 void UDI_MA_TransitionState(tUDI_DriverInstance *Inst, enum eUDI_MAState Src, enum eUDI_MAState Dst)
 248 {
 249         ASSERT(Inst);
 250         if( Inst->CurState != Src )
 251                 return ;
 252
 253         LOG("Inst %s %p MA state %i->%i",
 254                 Inst->Module->ModuleName, Inst, Src, Dst);
 255
 256         switch(Dst)
 257         {
 258         case UDI_MASTATE_USAGEIND:
 259                 ASSERT(Dst != UDI_MASTATE_USAGEIND);
 260                 break;
 261         case UDI_MASTATE_SECBIND:
 262                 Inst->CurState = UDI_MASTATE_SECBIND;
 263                 for( int i = 1; i < Inst->Module->nRegions; i ++ )
 264                 {
 265                         // TODO: Bind secondaries to primary
 266                         Log_Warning("UDI", "TODO: Bind secondary channels");
 267                         //inst->Regions[i]->PriChannel = UDI_CreateChannel_Blank(
 268                 }
 269                 //UDI_MA_TransitionState(Inst, UDI_MASTATE_SECBIND, UDI_MASTATE_PARENTBIND);
 270                 //break;
 271         case UDI_MASTATE_PARENTBIND:
 272                 Inst->CurState = UDI_MASTATE_PARENTBIND;
 273                 if( Inst->Parent )
 274                 {
 275                         tUDI_DriverModule       *Module = Inst->Module;
 276                         tUDI_ChildBinding       *parent_bind = Inst->ParentChildBinding;
 277                         // TODO: Handle multi-parent drivers
 278                         ASSERTC(Module->nParents, ==, 1);
 279
 280                         // Bind to parent
 281                         tUDI_BindOps    *parent = &Module->Parents[0];
 282                         udi_channel_t channel = UDI_CreateChannel_Blank(UDI_int_GetMetaLang(Inst->Module, parent->meta_idx));
 283
 284                         UDI_BindChannel(channel,true,  Inst, parent->ops_idx, parent->region_idx, NULL,false,0);
 285                         UDI_BindChannel(channel,false,
 286                                 Inst->Parent, parent_bind->Ops->ops_idx, parent_bind->BindOps->region_idx,
 287                                 NULL, true, parent_bind->ChildID);
 288
 289                         udi_cb_t        *bind_cb;
 290                         if( parent->bind_cb_idx == 0 )
 291                                 bind_cb = NULL;
 292                         else {
 293                                 bind_cb = udi_cb_alloc_internal(Inst, parent->bind_cb_idx, channel);
 294                                 if( !bind_cb ) {
 295                                         Log_Warning("UDI", "Bind CB index is invalid");
 296                                         break;
 297                                 }
 298                                 UDI_int_ChannelFlip( bind_cb );
 299                         }
 300
 301                          int    n_handles = Module->InitInfo->primary_init_info->per_parent_paths;
 302                         udi_buf_path_t  handles[n_handles];
 303                         for( int i = 0; i < n_handles; i ++ ) {
 304                                 //handles[i] = udi_buf_path_alloc_internal(Inst);
 305                                 handles[i] = 0;
 306                         }
 307
 308                         udi_channel_event_cb_t *ev_cb = (void*)udi_cb_alloc_internal_v(&cMetaLang_Management,
 309                                 UDI_MGMT_CHANNEL_EVENT_CB_NUM, 0, 0, channel);
 310                         UDI_GCB(ev_cb)->initiator_context = Inst;
 311                         ev_cb->event = UDI_CHANNEL_BOUND;
 312                         ev_cb->params.parent_bound.bind_cb = bind_cb;
 313                         ev_cb->params.parent_bound.parent_ID = 1;
 314                         ev_cb->params.parent_bound.path_handles = handles;
 315
 316                         udi_channel_event_ind(ev_cb);
 317                         break;
 318                 }
 319                 //UDI_MA_TransitionState(Inst, UDI_MASTATE_PARENTBIND, UDI_MASTATE_ENUMCHILDREN);
 320                 //break;
 321         case UDI_MASTATE_ENUMCHILDREN:
 322                 Inst->CurState = UDI_MASTATE_ENUMCHILDREN;
 323                 UDI_MA_BeginEnumeration(Inst);
 324                 break;
 325         case UDI_MASTATE_ACTIVE:
 326                 Inst->CurState = UDI_MASTATE_ACTIVE;
 327                 Log_Log("UDI", "Driver instance %s %p entered active state",
 328                         Inst->Module->ModuleName, Inst);
 329                 break;
 330         }
 331 }
 332