KernelLand/Modules/USB/Core/usb_devinit.c

   1 /*
   2  * Acess 2 USB Stack
   3  * - By John Hodge (thePowersGang)
   4  *
   5  * usb_devinit.c
   6  * - USB Device Initialisation
   7  */
   8 #define DEBUG   1
   9
  10 #include <acess.h>
  11 #include <vfs.h>
  12 #include <drv_pci.h>
  13 #include "usb.h"
  14 #include "usb_proto.h"
  15 #include "usb_lowlevel.h"
  16
  17 // === PROTOTYPES ===
  18 void    USB_DeviceConnected(tUSBHub *Hub, int Port);
  19 void    USB_DeviceDisconnected(tUSBHub *Hub, int Port);
  20 void    *USB_GetDeviceDataPtr(tUSBInterface *Dev);
  21 void    USB_SetDeviceDataPtr(tUSBInterface *Dev, void *Ptr);
  22  int    USB_int_AllocateAddress(tUSBHost *Host);
  23
  24 // === CODE ===
  25 void USB_DeviceConnected(tUSBHub *Hub, int Port)
  26 {
  27         tUSBDevice      tmpdev;
  28         tUSBDevice      *dev = &tmpdev;
  29         if( Port >= Hub->nPorts )       return ;
  30         if( Hub->Devices[Port] )        return ;
  31
  32         ENTER("pHub iPort", Hub, Port);
  33
  34         // Device should be in 'Default' state
  35
  36         // Create structure
  37         dev->ParentHub = Hub;
  38         dev->Host = Hub->Interface->Dev->Host;
  39         dev->Address = 0;
  40
  41         // 1. Assign an address
  42         dev->Address = USB_int_AllocateAddress(dev->Host);
  43         if(dev->Address == 0) {
  44                 Log_Error("USB", "No addresses avaliable on host %p", dev->Host);
  45                 free(dev);
  46                 LEAVE('-');
  47                 return ;
  48         }
  49         USB_int_SendSetupSetAddress(dev->Host, dev->Address);
  50         LOG("Assigned address %i", dev->Address);
  51
  52         // 2. Get device information
  53         {
  54                 struct sDescriptor_Device       desc;
  55                 LOG("Getting device descriptor");
  56                 // Endpoint 0, Desc Type 1, Index 0
  57                 USB_int_ReadDescriptor(dev, 0, 1, 0, sizeof(desc), &desc);
  58
  59                 LOG("Device Descriptor = {");
  60                 LOG(" .Length = %i", desc.Length);
  61                 LOG(" .Type = %i", desc.Type);
  62                 LOG(" .USBVersion = 0x%04x", desc.USBVersion);
  63                 LOG(" .DeviceClass = 0x%02x", desc.DeviceClass);
  64                 LOG(" .DeviceSubClass = 0x%02x", desc.DeviceSubClass);
  65                 LOG(" .DeviceProtocol = 0x%02x", desc.DeviceProtocol);
  66                 LOG(" .MaxPacketSize = 0x%02x", desc.MaxPacketSize);
  67                 LOG(" .VendorID = 0x%04x", desc.VendorID);
  68                 LOG(" .ProductID = 0x%04x", desc.ProductID);
  69                 LOG(" .DeviceID = 0x%04x", desc.DeviceID);
  70                 LOG(" .ManufacturerStr = Str %i", desc.ManufacturerStr);
  71                 LOG(" .ProductStr = Str %i", desc.ProductStr);
  72                 LOG(" .SerialNumberStr = Str %i", desc.SerialNumberStr);
  73                 LOG(" .NumConfigurations = %i", desc.SerialNumberStr);
  74                 LOG("}");
  75
  76                 #if DEBUG
  77                 if( desc.ManufacturerStr )
  78                 {
  79                         char    *tmp = USB_int_GetDeviceString(dev, 0, desc.ManufacturerStr);
  80                         if( tmp ) {
  81                                 LOG("ManufacturerStr = '%s'", tmp);
  82                                 free(tmp);
  83                         }
  84                 }
  85                 if( desc.ProductStr )
  86                 {
  87                         char    *tmp = USB_int_GetDeviceString(dev, 0, desc.ProductStr);
  88                         if( tmp ) {
  89                                 LOG("ProductStr = '%s'", tmp);
  90                                 free(tmp);
  91                         }
  92                 }
  93                 if( desc.SerialNumberStr )
  94                 {
  95                         char    *tmp = USB_int_GetDeviceString(dev, 0, desc.SerialNumberStr);
  96                         if( tmp ) {
  97                                 LOG("SerialNumbertStr = '%s'", tmp);
  98                                 free(tmp);
  99                         }
 100                 }
 101                 #endif
 102         }
 103
 104         // TODO: Support alternate configurations
 105
 106         // 3. Get configurations
 107         for( int i = 0; i < 1; i ++ )
 108         {
 109                 struct sDescriptor_Configuration        desc;
 110                 Uint8   *full_buf;
 111                 size_t  ptr_ofs = 0;
 112                 size_t  total_length;
 113
 114                 USB_int_ReadDescriptor(dev, 0, 2, i, sizeof(desc), &desc);
 115                 LOG("Configuration Descriptor %i = {", i);
 116                 LOG(" .Length = %i", desc.Length);
 117                 LOG(" .Type = %i", desc.Type);
 118                 LOG(" .TotalLength = 0x%x", LittleEndian16(desc.TotalLength));
 119                 LOG(" .NumInterfaces = %i", desc.NumInterfaces);
 120                 LOG(" .ConfigurationValue = %i", desc.ConfigurationValue);
 121                 LOG(" .ConfigurationStr = %i", desc.ConfigurationStr);
 122                 LOG(" .AttributesBmp = 0b%b", desc.AttributesBmp);
 123                 LOG(" .MaxPower = %i (*2mA)", desc.MaxPower);
 124                 LOG("}");
 125                 if( desc.ConfigurationStr ) {
 126                         char    *tmp = USB_int_GetDeviceString(dev, 0, desc.ConfigurationStr);
 127                         LOG("ConfigurationStr = '%s'", tmp);
 128                         free(tmp);
 129                 }
 130
 131                 // TODO: Split here and allow some method of selection
 132
 133                 // Allocate device now that we have the configuration
 134                 dev = malloc(sizeof(tUSBDevice) + desc.NumInterfaces * sizeof(void*));
 135                 memcpy(dev, &tmpdev, sizeof(tUSBDevice));
 136                 dev->nInterfaces = desc.NumInterfaces;
 137
 138                 // Allocate a temp buffer for config info
 139                 total_length = LittleEndian16(desc.TotalLength);
 140                 full_buf = malloc( total_length );
 141                 USB_int_ReadDescriptor(dev, 0, 2, i, total_length, full_buf);
 142
 143                 ptr_ofs += desc.Length;
 144
 145                 // TODO: Interfaces
 146                 for( int j = 0; ptr_ofs < total_length && j < desc.NumInterfaces; j ++ )
 147                 {
 148                         struct sDescriptor_Interface *iface;
 149                         tUSBInterface   *dev_if;
 150                         size_t  iface_base_ofs;
 151
 152                         iface = (void*)(full_buf + ptr_ofs);
 153                         if( iface->Length == 0 ) {
 154                                 Log_Warning("USB", "Bad USB descriptor (length = 0)");
 155                                 break ;
 156                         }
 157                         ptr_ofs += iface->Length;
 158                         if( ptr_ofs > total_length ) {
 159                                 // Sanity fail
 160                                 break;
 161                         }
 162                         iface_base_ofs = ptr_ofs;
 163                         // Check type
 164                         if( iface->Type != 4 ) {
 165                                 LOG("Not an interface (type = %i)", iface->Type);
 166                                 j --;   // Counteract j++ in loop
 167                                 continue ;
 168                         }
 169
 170                         LOG("Interface %i/%i = {", i, j);
 171                         LOG(" .InterfaceNum = %i", iface->InterfaceNum);
 172                         LOG(" .NumEndpoints = %i", iface->NumEndpoints);
 173                         LOG(" .InterfaceClass = 0x%x", iface->InterfaceClass);
 174                         LOG(" .InterfaceSubClass = 0x%x", iface->InterfaceSubClass);
 175                         LOG(" .InterfaceProcol = 0x%x", iface->InterfaceProtocol);
 176                         #if DEBUG
 177                         if( iface->InterfaceStr ) {
 178                                 char    *tmp = USB_int_GetDeviceString(dev, 0, iface->InterfaceStr);
 179                                 LOG(" .InterfaceStr = %i '%s'", iface->InterfaceStr, tmp);
 180                                 free(tmp);
 181                         }
 182                         #endif
 183                         LOG("}");
 184
 185                         dev_if = malloc(sizeof(tUSBInterface) + iface->NumEndpoints*sizeof(dev_if->Endpoints[0]));
 186                         dev_if->Dev = dev;
 187                         dev_if->Driver = NULL;
 188                         dev_if->Data = NULL;
 189                         dev_if->nEndpoints = iface->NumEndpoints;
 190                         dev->Interfaces[j] = dev_if;
 191
 192                         // Copy interface data
 193                         for( int k = 0; ptr_ofs < total_length && k < iface->NumEndpoints; k ++ )
 194                         {
 195                                 struct sDescriptor_Endpoint *endpt;
 196
 197                                 endpt = (void*)(full_buf + ptr_ofs);
 198                                 ptr_ofs += endpt->Length;
 199                                 if( ptr_ofs > total_length ) {
 200                                         // Sanity fail
 201                                         break;
 202                                 }
 203
 204                                 // Check type
 205                                 if( endpt->Type != 5 ) {
 206                                         // Oops?
 207                                         LOG("Not endpoint, Type = %i", endpt->Type);
 208                                         k --;
 209                                         continue ;
 210                                 }
 211
 212                                 LOG("Endpoint %i/%i/%i = {", i, j, k);
 213                                 LOG(" .Address = 0x%2x", endpt->Address);
 214                                 LOG(" .Attributes = 0b%8b", endpt->Attributes);
 215                                 LOG(" .MaxPacketSize = %i", LittleEndian16(endpt->MaxPacketSize));
 216                                 LOG(" .PollingInterval = %i", endpt->PollingInterval);
 217                                 LOG("}");
 218
 219                                 dev_if->Endpoints[k].Next = NULL;
 220                                 dev_if->Endpoints[k].Interface = dev_if;
 221                                 dev_if->Endpoints[k].EndpointIdx = k;
 222                                 dev_if->Endpoints[k].EndpointNum = endpt->Address & 0x7F;
 223                                 dev_if->Endpoints[k].PollingPeriod = endpt->PollingInterval;
 224                                 dev_if->Endpoints[k].MaxPacketSize = LittleEndian16(endpt->MaxPacketSize);
 225                                 dev_if->Endpoints[k].Type = endpt->Attributes | (endpt->Address & 0x80);
 226                                 dev_if->Endpoints[k].PollingAtoms = 0;
 227                                 dev_if->Endpoints[k].InputData = NULL;
 228                         }
 229
 230                         // Initialise driver
 231                         dev_if->Driver = USB_int_FindDriverByClass(
 232                                  ((int)iface->InterfaceClass << 16)
 233                                 |((int)iface->InterfaceSubClass << 8)
 234                                 |((int)iface->InterfaceProtocol << 0)
 235                                 );
 236                         if(!dev_if->Driver) {
 237                                 Log_Notice("USB", "No driver for Class %02x:%02x:%02x",
 238                                         iface->InterfaceClass, iface->InterfaceSubClass, iface->InterfaceProtocol
 239                                         );
 240                         }
 241                         else {
 242                                 dev_if->Driver->Connected(
 243                                         dev_if,
 244                                         full_buf + iface_base_ofs, ptr_ofs - iface_base_ofs
 245                                         );
 246                         //      dev_if->Driver->Connected( dev_if );
 247                         }
 248                 }
 249
 250                 free(full_buf);
 251         }
 252
 253         // Done.
 254         LEAVE('-');
 255 }
 256
 257 void USB_DeviceDisconnected(tUSBHub *Hub, int Port)
 258 {
 259
 260 }
 261
 262 void *USB_GetDeviceDataPtr(tUSBInterface *Dev) { return Dev->Data; }
 263 void USB_SetDeviceDataPtr(tUSBInterface *Dev, void *Ptr) { Dev->Data = Ptr; }
 264
 265 int USB_int_AllocateAddress(tUSBHost *Host)
 266 {
 267          int    i;
 268         for( i = 1; i < 128; i ++ )
 269         {
 270                 if(Host->AddressBitmap[i/8] & (1 << (i%8)))
 271                         continue ;
 272                 Host->AddressBitmap[i/8] |= 1 << (i%8);
 273                 return i;
 274         }
 275         return 0;
 276 }
 277
 278 void USB_int_DeallocateAddress(tUSBHost *Host, int Address)
 279 {
 280         Host->AddressBitmap[Address/8] &= ~(1 << (Address%8));
 281 }
 282