Stephen Hemminger | f8942e0 | 2010-09-08 14:46:36 -0700 | [diff] [blame] | 1 | #include "headers.h" |
| 2 | |
Stephen Hemminger | f8942e0 | 2010-09-08 14:46:36 -0700 | [diff] [blame] | 3 | |
| 4 | static void read_int_callback(struct urb *urb/*, struct pt_regs *regs*/) |
| 5 | { |
| 6 | int status = urb->status; |
| 7 | PS_INTERFACE_ADAPTER psIntfAdapter = (PS_INTERFACE_ADAPTER)urb->context; |
| 8 | PMINI_ADAPTER Adapter = psIntfAdapter->psAdapter ; |
| 9 | |
Stephen Hemminger | 9ec4475 | 2010-11-01 12:18:36 -0400 | [diff] [blame] | 10 | if (netif_msg_intr(Adapter)) |
| 11 | pr_info(PFX "%s: interrupt status %d\n", |
| 12 | Adapter->dev->name, status); |
| 13 | |
Stephen Hemminger | f8942e0 | 2010-09-08 14:46:36 -0700 | [diff] [blame] | 14 | if(Adapter->device_removed == TRUE) |
| 15 | { |
| 16 | BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"Device has Got Removed."); |
| 17 | return ; |
| 18 | } |
| 19 | |
| 20 | if(((Adapter->bPreparingForLowPowerMode == TRUE) && (Adapter->bDoSuspend == TRUE)) || |
| 21 | psIntfAdapter->bSuspended || |
| 22 | psIntfAdapter->bPreparingForBusSuspend) |
| 23 | { |
| 24 | BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"Interrupt call back is called while suspending the device"); |
| 25 | return ; |
| 26 | } |
| 27 | |
| 28 | //BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, NEXT_SEND, DBG_LVL_ALL, "interrupt urb status %d", status); |
| 29 | switch (status) { |
| 30 | /* success */ |
| 31 | case STATUS_SUCCESS: |
| 32 | if ( urb->actual_length ) |
| 33 | { |
| 34 | |
| 35 | if(psIntfAdapter->ulInterruptData[1] & 0xFF) |
| 36 | { |
| 37 | BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL, "Got USIM interrupt"); |
| 38 | } |
| 39 | |
| 40 | if(psIntfAdapter->ulInterruptData[1] & 0xFF00) |
| 41 | { |
| 42 | atomic_set(&Adapter->CurrNumFreeTxDesc, |
| 43 | (psIntfAdapter->ulInterruptData[1] & 0xFF00) >> 8); |
| 44 | atomic_set (&Adapter->uiMBupdate, TRUE); |
| 45 | BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL, "TX mailbox contains %d", |
| 46 | atomic_read(&Adapter->CurrNumFreeTxDesc)); |
| 47 | } |
| 48 | if(psIntfAdapter->ulInterruptData[1] >> 16) |
| 49 | { |
| 50 | Adapter->CurrNumRecvDescs= |
| 51 | (psIntfAdapter->ulInterruptData[1] >> 16); |
| 52 | BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"RX mailbox contains %d", |
| 53 | Adapter->CurrNumRecvDescs); |
| 54 | InterfaceRx(psIntfAdapter); |
| 55 | } |
| 56 | if(Adapter->fw_download_done && |
| 57 | !Adapter->downloadDDR && |
| 58 | atomic_read(&Adapter->CurrNumFreeTxDesc)) |
| 59 | { |
| 60 | psIntfAdapter->psAdapter->downloadDDR +=1; |
| 61 | wake_up(&Adapter->tx_packet_wait_queue); |
| 62 | } |
| 63 | if(FALSE == Adapter->waiting_to_fw_download_done) |
| 64 | { |
| 65 | Adapter->waiting_to_fw_download_done = TRUE; |
| 66 | wake_up(&Adapter->ioctl_fw_dnld_wait_queue); |
| 67 | } |
| 68 | if(!atomic_read(&Adapter->TxPktAvail)) |
| 69 | { |
| 70 | atomic_set(&Adapter->TxPktAvail, 1); |
| 71 | wake_up(&Adapter->tx_packet_wait_queue); |
| 72 | } |
| 73 | BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"Firing interrupt in URB"); |
| 74 | } |
| 75 | break; |
| 76 | case -ENOENT : |
| 77 | { |
| 78 | BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"URB has got disconnected ...."); |
| 79 | return ; |
| 80 | } |
| 81 | case -EINPROGRESS: |
| 82 | { |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 83 | //This situation may happened when URBunlink is used. for detail check usb_unlink_urb documentation. |
| 84 | BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"Impossibe condition has occurred... something very bad is going on"); |
Stephen Hemminger | f8942e0 | 2010-09-08 14:46:36 -0700 | [diff] [blame] | 85 | break ; |
| 86 | //return; |
| 87 | } |
| 88 | case -EPIPE: |
| 89 | { |
| 90 | BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"Interrupt IN endPoint has got halted/stalled...need to clear this"); |
| 91 | Adapter->bEndPointHalted = TRUE ; |
| 92 | wake_up(&Adapter->tx_packet_wait_queue); |
Joe Perches | 859171c | 2010-11-14 19:04:48 -0800 | [diff] [blame] | 93 | urb->status = STATUS_SUCCESS ; |
Stephen Hemminger | f8942e0 | 2010-09-08 14:46:36 -0700 | [diff] [blame] | 94 | return; |
| 95 | } |
| 96 | /* software-driven interface shutdown */ |
| 97 | case -ECONNRESET: //URB got unlinked. |
| 98 | case -ESHUTDOWN: // hardware gone. this is the serious problem. |
| 99 | //Occurs only when something happens with the host controller device |
| 100 | case -ENODEV : //Device got removed |
| 101 | case -EINVAL : //Some thing very bad happened with the URB. No description is available. |
| 102 | BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"interrupt urb error %d", status); |
| 103 | urb->status = STATUS_SUCCESS ; |
| 104 | break ; |
| 105 | //return; |
| 106 | default: |
| 107 | //This is required to check what is the defaults conditions when it occurs.. |
| 108 | BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, NEXT_SEND, DBG_LVL_ALL,"GOT DEFAULT INTERRUPT URB STATUS :%d..Please Analyze it...", status); |
| 109 | break; |
| 110 | } |
| 111 | |
| 112 | StartInterruptUrb(psIntfAdapter); |
| 113 | |
| 114 | |
| 115 | } |
| 116 | |
| 117 | int CreateInterruptUrb(PS_INTERFACE_ADAPTER psIntfAdapter) |
| 118 | { |
| 119 | psIntfAdapter->psInterruptUrb = usb_alloc_urb(0, GFP_KERNEL); |
| 120 | if (!psIntfAdapter->psInterruptUrb) |
| 121 | { |
| 122 | BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"Cannot allocate interrupt urb"); |
| 123 | return -ENOMEM; |
| 124 | } |
| 125 | psIntfAdapter->psInterruptUrb->transfer_buffer = |
| 126 | psIntfAdapter->ulInterruptData; |
| 127 | psIntfAdapter->psInterruptUrb->transfer_buffer_length = |
| 128 | sizeof(psIntfAdapter->ulInterruptData); |
| 129 | |
| 130 | psIntfAdapter->sIntrIn.int_in_pipe = usb_rcvintpipe(psIntfAdapter->udev, |
| 131 | psIntfAdapter->sIntrIn.int_in_endpointAddr); |
| 132 | |
| 133 | usb_fill_int_urb(psIntfAdapter->psInterruptUrb, psIntfAdapter->udev, |
| 134 | psIntfAdapter->sIntrIn.int_in_pipe, |
| 135 | psIntfAdapter->psInterruptUrb->transfer_buffer, |
| 136 | psIntfAdapter->psInterruptUrb->transfer_buffer_length, |
| 137 | read_int_callback, psIntfAdapter, |
| 138 | psIntfAdapter->sIntrIn.int_in_interval); |
| 139 | |
| 140 | BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"Interrupt Interval: %d\n", |
| 141 | psIntfAdapter->sIntrIn.int_in_interval); |
| 142 | return 0; |
| 143 | } |
| 144 | |
| 145 | |
| 146 | INT StartInterruptUrb(PS_INTERFACE_ADAPTER psIntfAdapter) |
| 147 | { |
| 148 | INT status = 0; |
| 149 | |
| 150 | if( FALSE == psIntfAdapter->psAdapter->device_removed && |
| 151 | FALSE == psIntfAdapter->psAdapter->bEndPointHalted && |
| 152 | FALSE == psIntfAdapter->bSuspended && |
| 153 | FALSE == psIntfAdapter->bPreparingForBusSuspend && |
| 154 | FALSE == psIntfAdapter->psAdapter->StopAllXaction) |
| 155 | { |
| 156 | status = usb_submit_urb(psIntfAdapter->psInterruptUrb, GFP_ATOMIC); |
| 157 | if (status) |
| 158 | { |
| 159 | BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"Cannot send int urb %d\n", status); |
| 160 | if(status == -EPIPE) |
| 161 | { |
| 162 | psIntfAdapter->psAdapter->bEndPointHalted = TRUE ; |
| 163 | wake_up(&psIntfAdapter->psAdapter->tx_packet_wait_queue); |
| 164 | } |
| 165 | } |
| 166 | } |
| 167 | return status; |
| 168 | } |
| 169 | |