3 /*this is transmit call-back(BULK OUT)*/
4 static void write_bulk_callback(struct urb *urb/*, struct pt_regs *regs*/)
6 PUSB_TCB pTcb= (PUSB_TCB)urb->context;
7 PS_INTERFACE_ADAPTER psIntfAdapter = pTcb->psIntfAdapter;
8 CONTROL_MESSAGE *pControlMsg = (CONTROL_MESSAGE *)urb->transfer_buffer;
9 PMINI_ADAPTER psAdapter = psIntfAdapter->psAdapter ;
10 BOOLEAN bpowerDownMsg = FALSE ;
11 PMINI_ADAPTER Adapter = GET_BCM_ADAPTER(gblpnetdev);
13 if (unlikely(netif_msg_tx_done(Adapter)))
14 pr_info(PFX "%s: transmit status %d\n", Adapter->dev->name, urb->status);
16 if(urb->status != STATUS_SUCCESS)
18 if(urb->status == -EPIPE)
20 psIntfAdapter->psAdapter->bEndPointHalted = TRUE ;
21 wake_up(&psIntfAdapter->psAdapter->tx_packet_wait_queue);
25 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, NEXT_SEND, DBG_LVL_ALL,"Tx URB has got cancelled. status :%d", urb->status);
30 atomic_dec(&psIntfAdapter->uNumTcbUsed);
34 if(TRUE == psAdapter->bPreparingForLowPowerMode)
37 if(((pControlMsg->szData[0] == GO_TO_IDLE_MODE_PAYLOAD) &&
38 (pControlMsg->szData[1] == TARGET_CAN_GO_TO_IDLE_MODE)))
41 bpowerDownMsg = TRUE ;
42 //This covers the bus err while Idle Request msg sent down.
43 if(urb->status != STATUS_SUCCESS)
45 psAdapter->bPreparingForLowPowerMode = FALSE ;
46 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, NEXT_SEND, DBG_LVL_ALL,"Idle Mode Request msg failed to reach to Modem");
47 //Signalling the cntrl pkt path in Ioctl
48 wake_up(&psAdapter->lowpower_mode_wait_queue);
49 StartInterruptUrb(psIntfAdapter);
53 if(psAdapter->bDoSuspend == FALSE)
55 psAdapter->IdleMode = TRUE;
56 //since going in Idle mode completed hence making this var false;
57 psAdapter->bPreparingForLowPowerMode = FALSE ;
59 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, NEXT_SEND, DBG_LVL_ALL, "Host Entered in Idle Mode State...");
60 //Signalling the cntrl pkt path in Ioctl
61 wake_up(&psAdapter->lowpower_mode_wait_queue);
65 else if((pControlMsg->Leader.Status == LINK_UP_CONTROL_REQ) &&
66 (pControlMsg->szData[0] == LINK_UP_ACK) &&
67 (pControlMsg->szData[1] == LINK_SHUTDOWN_REQ_FROM_FIRMWARE) &&
68 (pControlMsg->szData[2] == SHUTDOWN_ACK_FROM_DRIVER))
70 //This covers the bus err while shutdown Request msg sent down.
71 if(urb->status != STATUS_SUCCESS)
73 psAdapter->bPreparingForLowPowerMode = FALSE ;
74 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, NEXT_SEND, DBG_LVL_ALL,"Shutdown Request Msg failed to reach to Modem");
75 //Signalling the cntrl pkt path in Ioctl
76 wake_up(&psAdapter->lowpower_mode_wait_queue);
77 StartInterruptUrb(psIntfAdapter);
81 bpowerDownMsg = TRUE ;
82 if(psAdapter->bDoSuspend == FALSE)
84 psAdapter->bShutStatus = TRUE;
85 //since going in shutdown mode completed hence making this var false;
86 psAdapter->bPreparingForLowPowerMode = FALSE ;
87 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, NEXT_SEND, DBG_LVL_ALL,"Host Entered in shutdown Mode State...");
88 //Signalling the cntrl pkt path in Ioctl
89 wake_up(&psAdapter->lowpower_mode_wait_queue);
93 if(psAdapter->bDoSuspend && bpowerDownMsg)
95 //issuing bus suspend request
96 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, NEXT_SEND, DBG_LVL_ALL,"Issuing the Bus suspend request to USB stack");
97 psIntfAdapter->bPreparingForBusSuspend = TRUE;
98 schedule_work(&psIntfAdapter->usbSuspendWork);
105 #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 35)
106 usb_buffer_free(urb->dev, urb->transfer_buffer_length,
107 urb->transfer_buffer, urb->transfer_dma);
109 usb_free_coherent(urb->dev, urb->transfer_buffer_length,
110 urb->transfer_buffer, urb->transfer_dma);
115 static PUSB_TCB GetBulkOutTcb(PS_INTERFACE_ADAPTER psIntfAdapter)
117 PUSB_TCB pTcb = NULL;
120 if((atomic_read(&psIntfAdapter->uNumTcbUsed) < MAXIMUM_USB_TCB) &&
121 (psIntfAdapter->psAdapter->StopAllXaction ==FALSE))
123 index = atomic_read(&psIntfAdapter->uCurrTcb);
124 pTcb = &psIntfAdapter->asUsbTcb[index];
126 pTcb->psIntfAdapter= psIntfAdapter;
127 BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_TX, NEXT_SEND, DBG_LVL_ALL, "Got Tx desc %d used %d",
128 index, atomic_read(&psIntfAdapter->uNumTcbUsed));
129 index = (index + 1) % MAXIMUM_USB_TCB;
130 atomic_set(&psIntfAdapter->uCurrTcb, index);
131 atomic_inc(&psIntfAdapter->uNumTcbUsed);
136 static int TransmitTcb(PS_INTERFACE_ADAPTER psIntfAdapter, PUSB_TCB pTcb, PVOID data, int len)
139 struct urb *urb = pTcb->urb;
142 #if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 35)
143 urb->transfer_buffer = usb_buffer_alloc(psIntfAdapter->udev, len,
144 GFP_ATOMIC, &urb->transfer_dma);
146 urb->transfer_buffer = usb_alloc_coherent(psIntfAdapter->udev, len,
147 GFP_ATOMIC, &urb->transfer_dma);
150 if (!urb->transfer_buffer)
152 BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_PRINTK, 0, 0, "Error allocating memory\n");
155 memcpy(urb->transfer_buffer, data, len);
156 urb->transfer_buffer_length = len;
158 BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_TX, NEXT_SEND, DBG_LVL_ALL, "Sending Bulk out packet\n");
159 //For T3B,INT OUT end point will be used as bulk out end point
160 if((psIntfAdapter->psAdapter->chip_id == T3B) && (psIntfAdapter->bHighSpeedDevice == TRUE))
162 usb_fill_int_urb(urb, psIntfAdapter->udev,
163 psIntfAdapter->sBulkOut.bulk_out_pipe,
164 urb->transfer_buffer, len, write_bulk_callback, pTcb,
165 psIntfAdapter->sBulkOut.int_out_interval);
169 usb_fill_bulk_urb(urb, psIntfAdapter->udev,
170 psIntfAdapter->sBulkOut.bulk_out_pipe,
171 urb->transfer_buffer, len, write_bulk_callback, pTcb);
173 urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; /* For DMA transfer */
175 if(FALSE == psIntfAdapter->psAdapter->device_removed &&
176 FALSE == psIntfAdapter->psAdapter->bEndPointHalted &&
177 FALSE == psIntfAdapter->bSuspended &&
178 FALSE == psIntfAdapter->bPreparingForBusSuspend)
180 retval = usb_submit_urb(urb, GFP_ATOMIC);
183 BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_TX, NEXT_SEND, DBG_LVL_ALL, "failed submitting write urb, error %d", retval);
186 psIntfAdapter->psAdapter->bEndPointHalted = TRUE ;
187 wake_up(&psIntfAdapter->psAdapter->tx_packet_wait_queue);
194 int InterfaceTransmitPacket(PVOID arg, PVOID data, UINT len)
198 PS_INTERFACE_ADAPTER psIntfAdapter = (PS_INTERFACE_ADAPTER)arg;
199 pTcb= GetBulkOutTcb(psIntfAdapter);
202 BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_PRINTK, 0, 0, "No URB to transmit packet, dropping packet");
205 return TransmitTcb(psIntfAdapter, pTcb, data, len);