drivers/staging/bcm/InterfaceMisc.c

   1 #include "headers.h"
   2
   3 INT InterfaceRDM(PS_INTERFACE_ADAPTER psIntfAdapter,
   4                 UINT addr,
   5                 PVOID buff,
   6                 INT len)
   7 {
   8         int bytes;
   9         USHORT usRetries = 0;
  10
  11         if (psIntfAdapter == NULL) {
  12                 BCM_DEBUG_PRINT(psIntfAdapter->psAdapter, DBG_TYPE_PRINTK, 0, 0, "Interface Adapter is NULL");
  13                 return -EINVAL;
  14         }
  15
  16         if (psIntfAdapter->psAdapter->device_removed == TRUE) {
  17                 BCM_DEBUG_PRINT(psIntfAdapter->psAdapter, DBG_TYPE_PRINTK, 0, 0, "Device got removed");
  18                 return -ENODEV;
  19         }
  20
  21         if ((psIntfAdapter->psAdapter->StopAllXaction == TRUE) && (psIntfAdapter->psAdapter->chip_id >= T3LPB)) {
  22                 BCM_DEBUG_PRINT(psIntfAdapter->psAdapter, DBG_TYPE_OTHERS, RDM, DBG_LVL_ALL, "Currently Xaction is not allowed on the bus");
  23                 return -EACCES;
  24         }
  25
  26         if (psIntfAdapter->bSuspended == TRUE || psIntfAdapter->bPreparingForBusSuspend == TRUE) {
  27                 BCM_DEBUG_PRINT(psIntfAdapter->psAdapter, DBG_TYPE_OTHERS, RDM, DBG_LVL_ALL, "Bus is in suspended states hence RDM not allowed..");
  28                 return -EACCES;
  29         }
  30         psIntfAdapter->psAdapter->DeviceAccess = TRUE;
  31
  32         do {
  33                 bytes = usb_control_msg(psIntfAdapter->udev,
  34                                         usb_rcvctrlpipe(psIntfAdapter->udev, 0),
  35                                         0x02,
  36                                         0xC2,
  37                                         (addr & 0xFFFF),
  38                                         ((addr >> 16) & 0xFFFF),
  39                                         buff,
  40                                         len,
  41                                         5000);
  42
  43                 usRetries++;
  44                 if (-ENODEV == bytes) {
  45                         psIntfAdapter->psAdapter->device_removed = TRUE;
  46                         break;
  47                 }
  48
  49         } while ((bytes < 0) && (usRetries < MAX_RDM_WRM_RETIRES));
  50
  51         if (bytes < 0)
  52                 BCM_DEBUG_PRINT(psIntfAdapter->psAdapter, DBG_TYPE_OTHERS, RDM, DBG_LVL_ALL, "RDM failed status :%d, retires :%d", bytes, usRetries);
  53         else
  54                 BCM_DEBUG_PRINT(psIntfAdapter->psAdapter, DBG_TYPE_OTHERS, RDM, DBG_LVL_ALL, "RDM sent %d", bytes);
  55
  56         psIntfAdapter->psAdapter->DeviceAccess = FALSE;
  57         return bytes;
  58 }
  59
  60 INT InterfaceWRM(PS_INTERFACE_ADAPTER psIntfAdapter,
  61                 UINT addr,
  62                 PVOID buff,
  63                 INT len)
  64 {
  65         int retval = 0;
  66         USHORT usRetries = 0;
  67
  68         if (psIntfAdapter == NULL) {
  69                 BCM_DEBUG_PRINT(psIntfAdapter->psAdapter, DBG_TYPE_PRINTK, 0, 0, "Interface Adapter  is NULL");
  70                 return -EINVAL;
  71         }
  72
  73         if (psIntfAdapter->psAdapter->device_removed == TRUE) {
  74                 BCM_DEBUG_PRINT(psIntfAdapter->psAdapter, DBG_TYPE_PRINTK, 0, 0, "Device got removed");
  75                 return -ENODEV;
  76         }
  77
  78         if ((psIntfAdapter->psAdapter->StopAllXaction == TRUE) && (psIntfAdapter->psAdapter->chip_id >= T3LPB)) {
  79                 BCM_DEBUG_PRINT(psIntfAdapter->psAdapter, DBG_TYPE_OTHERS, WRM, DBG_LVL_ALL, "Currently Xaction is not allowed on the bus...");
  80                 return -EACCES;
  81         }
  82
  83         if (psIntfAdapter->bSuspended == TRUE || psIntfAdapter->bPreparingForBusSuspend == TRUE) {
  84                 BCM_DEBUG_PRINT(psIntfAdapter->psAdapter, DBG_TYPE_OTHERS, WRM, DBG_LVL_ALL, "Bus is in suspended states hence RDM not allowed..");
  85                 return -EACCES;
  86         }
  87
  88         psIntfAdapter->psAdapter->DeviceAccess = TRUE;
  89
  90         do {
  91                 retval = usb_control_msg(psIntfAdapter->udev,
  92                                         usb_sndctrlpipe(psIntfAdapter->udev, 0),
  93                                         0x01,
  94                                         0x42,
  95                                         (addr & 0xFFFF),
  96                                         ((addr >> 16) & 0xFFFF),
  97                                         buff,
  98                                         len,
  99                                         5000);
 100
 101                 usRetries++;
 102                 if (-ENODEV == retval) {
 103                         psIntfAdapter->psAdapter->device_removed = TRUE;
 104                         break;
 105                 }
 106
 107         } while ((retval < 0) && (usRetries < MAX_RDM_WRM_RETIRES));
 108
 109         if (retval < 0) {
 110                 BCM_DEBUG_PRINT(psIntfAdapter->psAdapter, DBG_TYPE_OTHERS, WRM, DBG_LVL_ALL, "WRM failed status :%d, retires :%d", retval, usRetries);
 111                 psIntfAdapter->psAdapter->DeviceAccess = FALSE;
 112                 return retval;
 113         } else {
 114                 psIntfAdapter->psAdapter->DeviceAccess = FALSE;
 115                 BCM_DEBUG_PRINT(psIntfAdapter->psAdapter, DBG_TYPE_OTHERS, WRM, DBG_LVL_ALL, "WRM sent %d", retval);
 116                 return STATUS_SUCCESS;
 117         }
 118 }
 119
 120 INT BcmRDM(PVOID arg,
 121         UINT addr,
 122         PVOID buff,
 123         INT len)
 124 {
 125         return InterfaceRDM((PS_INTERFACE_ADAPTER)arg, addr, buff, len);
 126 }
 127
 128 INT BcmWRM(PVOID arg,
 129         UINT addr,
 130         PVOID buff,
 131         INT len)
 132 {
 133         return InterfaceWRM((PS_INTERFACE_ADAPTER)arg, addr, buff, len);
 134 }
 135
 136 INT Bcm_clear_halt_of_endpoints(PMINI_ADAPTER Adapter)
 137 {
 138         PS_INTERFACE_ADAPTER psIntfAdapter = (PS_INTERFACE_ADAPTER)(Adapter->pvInterfaceAdapter);
 139         INT status = STATUS_SUCCESS;
 140
 141         /*
 142          * usb_clear_halt - tells device to clear endpoint halt/stall condition
 143          * @dev: device whose endpoint is halted
 144          * @pipe: endpoint "pipe" being cleared
 145          * @ Context: !in_interrupt ()
 146          *
 147          * usb_clear_halt is the synchrnous call and returns 0 on success else returns with error code.
 148          * This is used to clear halt conditions for bulk and interrupt endpoints only.
 149          * Control and isochronous endpoints never halts.
 150          *
 151          * Any URBs  queued for such an endpoint should normally be unlinked by the driver
 152          * before clearing the halt condition.
 153          *
 154          */
 155
 156         /* Killing all the submitted urbs to different end points. */
 157         Bcm_kill_all_URBs(psIntfAdapter);
 158
 159         /* clear the halted/stalled state for every end point */
 160         status = usb_clear_halt(psIntfAdapter->udev, psIntfAdapter->sIntrIn.int_in_pipe);
 161         if (status != STATUS_SUCCESS)
 162                 BCM_DEBUG_PRINT(Adapter, DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL, "Unable to Clear Halt of Interrupt IN end point. :%d ", status);
 163
 164         status = usb_clear_halt(psIntfAdapter->udev, psIntfAdapter->sBulkIn.bulk_in_pipe);
 165         if (status != STATUS_SUCCESS)
 166                 BCM_DEBUG_PRINT(Adapter, DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL, "Unable to Clear Halt of Bulk IN end point. :%d ", status);
 167
 168         status = usb_clear_halt(psIntfAdapter->udev, psIntfAdapter->sBulkOut.bulk_out_pipe);
 169         if (status != STATUS_SUCCESS)
 170                 BCM_DEBUG_PRINT(Adapter, DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL, "Unable to Clear Halt of Bulk OUT end point. :%d ", status);
 171
 172         return status;
 173 }
 174
 175 VOID Bcm_kill_all_URBs(PS_INTERFACE_ADAPTER psIntfAdapter)
 176 {
 177         struct urb *tempUrb = NULL;
 178         UINT i;
 179
 180         /*
 181          * usb_kill_urb - cancel a transfer request and wait for it to finish
 182          * @urb: pointer to URB describing a previously submitted request,
 183          * returns nothing as it is void returned API.
 184          *
 185          * This routine cancels an in-progress request. It is guaranteed that
 186          * upon return all completion handlers will have finished and the URB
 187          * will be totally idle and available for reuse
 188          *
 189          * This routine may not be used in an interrupt context (such as a bottom
 190          * half or a completion handler), or when holding a spinlock, or in other
 191          * situations where the caller can't schedule().
 192          *
 193          */
 194
 195         /* Cancel submitted Interrupt-URB's */
 196         if (psIntfAdapter->psInterruptUrb != NULL) {
 197                 if (psIntfAdapter->psInterruptUrb->status == -EINPROGRESS)
 198                         usb_kill_urb(psIntfAdapter->psInterruptUrb);
 199         }
 200
 201         /* Cancel All submitted TX URB's */
 202         for (i = 0; i < MAXIMUM_USB_TCB; i++) {
 203                 tempUrb = psIntfAdapter->asUsbTcb[i].urb;
 204                 if (tempUrb) {
 205                         if (tempUrb->status == -EINPROGRESS)
 206                                 usb_kill_urb(tempUrb);
 207                 }
 208         }
 209
 210         for (i = 0; i < MAXIMUM_USB_RCB; i++) {
 211                 tempUrb = psIntfAdapter->asUsbRcb[i].urb;
 212                 if (tempUrb) {
 213                         if (tempUrb->status == -EINPROGRESS)
 214                                 usb_kill_urb(tempUrb);
 215                 }
 216         }
 217
 218         atomic_set(&psIntfAdapter->uNumTcbUsed, 0);
 219         atomic_set(&psIntfAdapter->uCurrTcb, 0);
 220
 221         atomic_set(&psIntfAdapter->uNumRcbUsed, 0);
 222         atomic_set(&psIntfAdapter->uCurrRcb, 0);
 223 }
 224
 225 VOID putUsbSuspend(struct work_struct *work)
 226 {
 227         PS_INTERFACE_ADAPTER psIntfAdapter = NULL;
 228         struct usb_interface *intf = NULL;
 229         psIntfAdapter = container_of(work, S_INTERFACE_ADAPTER, usbSuspendWork);
 230         intf = psIntfAdapter->interface;
 231
 232         if (psIntfAdapter->bSuspended == FALSE)
 233                 usb_autopm_put_interface(intf);
 234 }
 235