drivers/staging/bcm/InterfaceIdleMode.c

   1 #include "headers.h"
   2
   3 /*
   4 Function:                               InterfaceIdleModeWakeup
   5
   6 Description:                    This is the hardware specific Function for waking up HW device from Idle mode.
   7                                                 A software abort pattern is written to the device to wake it and necessary power state
   8                                                 transitions from host are performed here.
   9
  10 Input parameters:               IN PMINI_ADAPTER Adapter   - Miniport Adapter Context
  11
  12
  13 Return:                         BCM_STATUS_SUCCESS - If Wakeup of the HW Interface was successful.
  14                                                 Other           - If an error occurred.
  15 */
  16
  17
  18 /*
  19 Function:                               InterfaceIdleModeRespond
  20
  21 Description:                    This is the hardware specific Function for responding to Idle mode request from target.
  22                                                 Necessary power state transitions from host for idle mode or other device specific
  23                                                 initializations are performed here.
  24
  25 Input parameters:               IN PMINI_ADAPTER Adapter   - Miniport Adapter Context
  26
  27
  28 Return:                         BCM_STATUS_SUCCESS - If Idle mode response related HW configuration was successful.
  29                                                 Other           - If an error occurred.
  30 */
  31
  32 /*
  33 "dmem bfc02f00  100" tells how many time device went in Idle mode.
  34 this value will be at address bfc02fa4.just before value d0ea1dle.
  35
  36 Set time value by writing at bfc02f98 7d0
  37
  38 checking the Ack timer expire on kannon by running command
  39 d qcslog .. if it shows e means host has not send response to f/w with in 200 ms. Response should be
  40 send to f/w with in 200 ms after the Idle/Shutdown req issued
  41
  42 */
  43
  44
  45 int InterfaceIdleModeRespond(PMINI_ADAPTER Adapter, unsigned int* puiBuffer)
  46 {
  47         int     status = STATUS_SUCCESS;
  48         unsigned int    uiRegRead = 0;
  49         int bytes;
  50
  51         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, IDLE_MODE, DBG_LVL_ALL,"SubType of Message :0x%X", ntohl(*puiBuffer));
  52
  53         if(ntohl(*puiBuffer) == GO_TO_IDLE_MODE_PAYLOAD)
  54         {
  55                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, IDLE_MODE, DBG_LVL_ALL," Got GO_TO_IDLE_MODE_PAYLOAD(210) Msg Subtype");
  56                 if(ntohl(*(puiBuffer+1)) == 0 )
  57                 {
  58                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, IDLE_MODE, DBG_LVL_ALL,"Got IDLE MODE WAKE UP Response From F/W");
  59
  60                         status = wrmalt (Adapter,SW_ABORT_IDLEMODE_LOC, &uiRegRead, sizeof(uiRegRead));
  61                         if(status)
  62                         {
  63                                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0, "wrm failed while clearing Idle Mode Reg");
  64                                 return status;
  65                         }
  66
  67                         if(Adapter->ulPowerSaveMode == DEVICE_POWERSAVE_MODE_AS_MANUAL_CLOCK_GATING)
  68                         {
  69                                 uiRegRead = 0x00000000 ;
  70                                 status = wrmalt (Adapter,DEBUG_INTERRUPT_GENERATOR_REGISTOR, &uiRegRead, sizeof(uiRegRead));
  71                                 if(status)
  72                                 {
  73                                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0, "wrm failed while clearing Idle Mode     Reg");
  74                                         return status;
  75                                 }
  76                         }
  77                         //Below Register should not br read in case of Manual and Protocol Idle mode.
  78                         else if(Adapter->ulPowerSaveMode != DEVICE_POWERSAVE_MODE_AS_PROTOCOL_IDLE_MODE)
  79                         {
  80                                 //clear on read Register
  81                                 bytes = rdmalt(Adapter, DEVICE_INT_OUT_EP_REG0, &uiRegRead, sizeof(uiRegRead));
  82                                 if (bytes < 0) {
  83                                         status = bytes;
  84                                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0, "rdm failed while clearing H/W Abort Reg0");
  85                                         return status;
  86                                 }
  87                                 //clear on read Register
  88                                 bytes = rdmalt(Adapter, DEVICE_INT_OUT_EP_REG1, &uiRegRead, sizeof(uiRegRead));
  89                                 if (bytes < 0) {
  90                                         status = bytes;
  91                                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0, "rdm failed while clearing H/W Abort     Reg1");
  92                                         return status;
  93                                 }
  94                         }
  95                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, IDLE_MODE, DBG_LVL_ALL, "Device Up from Idle Mode");
  96
  97                         // Set Idle Mode Flag to False and Clear IdleMode reg.
  98                         Adapter->IdleMode = FALSE;
  99                         Adapter->bTriedToWakeUpFromlowPowerMode = FALSE;
 100
 101                         wake_up(&Adapter->lowpower_mode_wait_queue);
 102
 103                 }
 104                 else
 105                 {
 106                         if(TRUE == Adapter->IdleMode)
 107                         {
 108                                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, IDLE_MODE, DBG_LVL_ALL,"Device is already in Idle mode....");
 109                                 return status ;
 110                         }
 111
 112                         uiRegRead = 0;
 113                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, IDLE_MODE, DBG_LVL_ALL, "Got Req from F/W to go in IDLE mode \n");
 114
 115                         if (Adapter->chip_id== BCS220_2 ||
 116                                 Adapter->chip_id == BCS220_2BC ||
 117                                         Adapter->chip_id== BCS250_BC ||
 118                                         Adapter->chip_id== BCS220_3)
 119                         {
 120
 121                                 bytes = rdmalt(Adapter, HPM_CONFIG_MSW, &uiRegRead, sizeof(uiRegRead));
 122                                 if (bytes < 0) {
 123                                         status = bytes;
 124                                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, IDLE_MODE, DBG_LVL_ALL, "rdm failed while Reading HPM_CONFIG_LDO145 Reg 0\n");
 125                                         return status;
 126                                 }
 127
 128
 129                                 uiRegRead |= (1<<17);
 130
 131                                 status = wrmalt (Adapter,HPM_CONFIG_MSW, &uiRegRead, sizeof(uiRegRead));
 132                                 if(status)
 133                                 {
 134                                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0, "wrm failed while clearing Idle Mode Reg\n");
 135                                         return status;
 136                                 }
 137
 138                         }
 139                         SendIdleModeResponse(Adapter);
 140                 }
 141         }
 142         else if(ntohl(*puiBuffer) == IDLE_MODE_SF_UPDATE_MSG)
 143         {
 144                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, IDLE_MODE, DBG_LVL_ALL, "OverRiding Service Flow Params");
 145                 OverrideServiceFlowParams(Adapter,puiBuffer);
 146         }
 147         return status;
 148 }
 149
 150 static int InterfaceAbortIdlemode(PMINI_ADAPTER Adapter, unsigned int Pattern)
 151 {
 152         int     status = STATUS_SUCCESS;
 153         unsigned int value;
 154         unsigned int chip_id ;
 155         unsigned long timeout = 0 ,itr = 0;
 156
 157         int     lenwritten = 0;
 158         unsigned char aucAbortPattern[8]={0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF};
 159         PS_INTERFACE_ADAPTER psInterfaceAdapter = Adapter->pvInterfaceAdapter;
 160
 161         //Abort Bus suspend if its already suspended
 162         if((TRUE == psInterfaceAdapter->bSuspended) && (TRUE == Adapter->bDoSuspend))
 163         {
 164                 status = usb_autopm_get_interface(psInterfaceAdapter->interface);
 165                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, IDLE_MODE, DBG_LVL_ALL,"Bus got wakeup..Aborting Idle mode... status:%d \n",status);
 166
 167         }
 168
 169         if((Adapter->ulPowerSaveMode == DEVICE_POWERSAVE_MODE_AS_MANUAL_CLOCK_GATING)
 170                                                                         ||
 171            (Adapter->ulPowerSaveMode == DEVICE_POWERSAVE_MODE_AS_PROTOCOL_IDLE_MODE))
 172         {
 173                 //write the SW abort pattern.
 174                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, IDLE_MODE, DBG_LVL_ALL, "Writing pattern<%d> to SW_ABORT_IDLEMODE_LOC\n", Pattern);
 175                 status = wrmalt(Adapter,SW_ABORT_IDLEMODE_LOC, &Pattern, sizeof(Pattern));
 176                 if(status)
 177                 {
 178                                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, IDLE_MODE, DBG_LVL_ALL,"WRM to Register SW_ABORT_IDLEMODE_LOC failed..");
 179                                 return status;
 180                 }
 181         }
 182
 183         if(Adapter->ulPowerSaveMode == DEVICE_POWERSAVE_MODE_AS_MANUAL_CLOCK_GATING)
 184         {
 185                 value = 0x80000000;
 186                 status = wrmalt(Adapter,DEBUG_INTERRUPT_GENERATOR_REGISTOR, &value, sizeof(value));
 187                 if(status)
 188                 {
 189                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, IDLE_MODE, DBG_LVL_ALL,"WRM to DEBUG_INTERRUPT_GENERATOR_REGISTOR Register failed");
 190                         return status;
 191                 }
 192         }
 193         else if(Adapter->ulPowerSaveMode != DEVICE_POWERSAVE_MODE_AS_PROTOCOL_IDLE_MODE)
 194         {
 195                 /*
 196                  * Get a Interrupt Out URB and send 8 Bytes Down
 197                  * To be Done in Thread Context.
 198                  * Not using Asynchronous Mechanism.
 199                  */
 200                 status = usb_interrupt_msg (psInterfaceAdapter->udev,
 201                         usb_sndintpipe(psInterfaceAdapter->udev,
 202                         psInterfaceAdapter->sIntrOut.int_out_endpointAddr),
 203                         aucAbortPattern,
 204                         8,
 205                         &lenwritten,
 206                         5000);
 207                 if(status)
 208                 {
 209                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, IDLE_MODE, DBG_LVL_ALL, "Sending Abort pattern down fails with status:%d..\n",status);
 210                         return status;
 211                 }
 212                 else
 213                 {
 214                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, IDLE_MODE, DBG_LVL_ALL, "NOB Sent down :%d", lenwritten);
 215                 }
 216
 217                 //mdelay(25);
 218
 219                 timeout= jiffies +  msecs_to_jiffies(50) ;
 220                 while( timeout > jiffies )
 221                 {
 222                         itr++ ;
 223                         rdmalt(Adapter, CHIP_ID_REG, &chip_id, sizeof(UINT));
 224                         if(0xbece3200==(chip_id&~(0xF0)))
 225                         {
 226                                 chip_id = chip_id&~(0xF0);
 227                         }
 228                         if(chip_id == Adapter->chip_id)
 229                                 break;
 230                 }
 231                 if(timeout < jiffies )
 232                 {
 233                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, IDLE_MODE, DBG_LVL_ALL,"Not able to read chip-id even after 25 msec");
 234                 }
 235                 else
 236                 {
 237                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, IDLE_MODE, DBG_LVL_ALL,"Number of completed iteration to read chip-id :%lu", itr);
 238                 }
 239
 240                 status = wrmalt(Adapter,SW_ABORT_IDLEMODE_LOC, &Pattern, sizeof(status));
 241                 if(status)
 242                 {
 243                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0,"WRM to Register SW_ABORT_IDLEMODE_LOC failed..");
 244                         return status;
 245                 }
 246         }
 247         return status;
 248 }
 249 int InterfaceIdleModeWakeup(PMINI_ADAPTER Adapter)
 250 {
 251         ULONG   Status = 0;
 252         if(Adapter->bTriedToWakeUpFromlowPowerMode)
 253         {
 254                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, IDLE_MODE, DBG_LVL_ALL, "Wake up already attempted.. ignoring\n");
 255         }
 256         else
 257         {
 258                 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, IDLE_MODE, DBG_LVL_ALL,"Writing Low Power Mode Abort pattern to the Device\n");
 259                 Adapter->bTriedToWakeUpFromlowPowerMode = TRUE;
 260                 InterfaceAbortIdlemode(Adapter, Adapter->usIdleModePattern);
 261
 262         }
 263         return Status;
 264 }
 265
 266 void InterfaceHandleShutdownModeWakeup(PMINI_ADAPTER Adapter)
 267 {
 268         unsigned int uiRegVal = 0;
 269         INT Status = 0;
 270         int bytes;
 271
 272         if(Adapter->ulPowerSaveMode == DEVICE_POWERSAVE_MODE_AS_MANUAL_CLOCK_GATING)
 273         {
 274                 // clear idlemode interrupt.
 275                 uiRegVal = 0;
 276                 Status =wrmalt(Adapter,DEBUG_INTERRUPT_GENERATOR_REGISTOR, &uiRegVal, sizeof(uiRegVal));
 277                 if(Status)
 278                 {
 279                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0,"WRM to DEBUG_INTERRUPT_GENERATOR_REGISTOR Failed with err :%d", Status);
 280                         return;
 281                 }
 282         }
 283
 284     else
 285         {
 286
 287         //clear Interrupt EP registers.
 288                 bytes = rdmalt(Adapter,DEVICE_INT_OUT_EP_REG0, &uiRegVal, sizeof(uiRegVal));
 289                 if (bytes < 0) {
 290                         Status = bytes;
 291                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0,"RDM of DEVICE_INT_OUT_EP_REG0 failed with Err :%d", Status);
 292                         return;
 293                 }
 294
 295                 bytes = rdmalt(Adapter,DEVICE_INT_OUT_EP_REG1, &uiRegVal, sizeof(uiRegVal));
 296                 if (bytes < 0) {
 297                         Status = bytes;
 298                         BCM_DEBUG_PRINT(Adapter,DBG_TYPE_PRINTK, 0, 0,"RDM of DEVICE_INT_OUT_EP_REG1 failed with Err :%d", Status);
 299                         return;
 300                 }
 301         }
 302 }
 303