drivers/staging/bcm/InterfaceMisc.c

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