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path: root/drivers/staging/bcm/InterfaceIsr.c
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-rw-r--r--drivers/staging/bcm/InterfaceIsr.c203
1 files changed, 203 insertions, 0 deletions
diff --git a/drivers/staging/bcm/InterfaceIsr.c b/drivers/staging/bcm/InterfaceIsr.c
new file mode 100644
index 00000000000..f928fe4d564
--- /dev/null
+++ b/drivers/staging/bcm/InterfaceIsr.c
@@ -0,0 +1,203 @@
1#include "headers.h"
2
3#ifndef BCM_SHM_INTERFACE
4
5static void read_int_callback(struct urb *urb/*, struct pt_regs *regs*/)
6{
7 int status = urb->status;
8 PS_INTERFACE_ADAPTER psIntfAdapter = (PS_INTERFACE_ADAPTER)urb->context;
9 PMINI_ADAPTER Adapter = psIntfAdapter->psAdapter ;
10
11 if(Adapter->device_removed == TRUE)
12 {
13 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"Device has Got Removed.");
14 return ;
15 }
16
17 if(((Adapter->bPreparingForLowPowerMode == TRUE) && (Adapter->bDoSuspend == TRUE)) ||
18 psIntfAdapter->bSuspended ||
19 psIntfAdapter->bPreparingForBusSuspend)
20 {
21 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"Interrupt call back is called while suspending the device");
22 return ;
23 }
24
25 //BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, NEXT_SEND, DBG_LVL_ALL, "interrupt urb status %d", status);
26 switch (status) {
27 /* success */
28 case STATUS_SUCCESS:
29 if ( urb->actual_length )
30 {
31
32 if(psIntfAdapter->ulInterruptData[1] & 0xFF)
33 {
34 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL, "Got USIM interrupt");
35 }
36
37 if(psIntfAdapter->ulInterruptData[1] & 0xFF00)
38 {
39 atomic_set(&Adapter->CurrNumFreeTxDesc,
40 (psIntfAdapter->ulInterruptData[1] & 0xFF00) >> 8);
41 atomic_set (&Adapter->uiMBupdate, TRUE);
42 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL, "TX mailbox contains %d",
43 atomic_read(&Adapter->CurrNumFreeTxDesc));
44 }
45 if(psIntfAdapter->ulInterruptData[1] >> 16)
46 {
47 Adapter->CurrNumRecvDescs=
48 (psIntfAdapter->ulInterruptData[1] >> 16);
49 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"RX mailbox contains %d",
50 Adapter->CurrNumRecvDescs);
51 InterfaceRx(psIntfAdapter);
52 }
53 if(Adapter->fw_download_done &&
54 !Adapter->downloadDDR &&
55 atomic_read(&Adapter->CurrNumFreeTxDesc))
56 {
57 psIntfAdapter->psAdapter->downloadDDR +=1;
58 wake_up(&Adapter->tx_packet_wait_queue);
59 }
60 if(FALSE == Adapter->waiting_to_fw_download_done)
61 {
62 Adapter->waiting_to_fw_download_done = TRUE;
63 wake_up(&Adapter->ioctl_fw_dnld_wait_queue);
64 }
65 if(!atomic_read(&Adapter->TxPktAvail))
66 {
67 atomic_set(&Adapter->TxPktAvail, 1);
68 wake_up(&Adapter->tx_packet_wait_queue);
69 }
70 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"Firing interrupt in URB");
71 }
72 break;
73 case -ENOENT :
74 {
75 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"URB has got disconnected ....");
76 return ;
77 }
78 case -EINPROGRESS:
79 {
80 //This situation may happend when URBunlink is used. for detail check usb_unlink_urb documentation.
81 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"Impossibe condition has occured... something very bad is going on");
82 break ;
83 //return;
84 }
85 case -EPIPE:
86 {
87 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"Interrupt IN endPoint has got halted/stalled...need to clear this");
88 Adapter->bEndPointHalted = TRUE ;
89 wake_up(&Adapter->tx_packet_wait_queue);
90 urb->status = STATUS_SUCCESS ;;
91 return;
92 }
93 /* software-driven interface shutdown */
94 case -ECONNRESET: //URB got unlinked.
95 case -ESHUTDOWN: // hardware gone. this is the serious problem.
96 //Occurs only when something happens with the host controller device
97 case -ENODEV : //Device got removed
98 case -EINVAL : //Some thing very bad happened with the URB. No description is available.
99 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"interrupt urb error %d", status);
100 urb->status = STATUS_SUCCESS ;
101 break ;
102 //return;
103 default:
104 //This is required to check what is the defaults conditions when it occurs..
105 BCM_DEBUG_PRINT(Adapter,DBG_TYPE_TX, NEXT_SEND, DBG_LVL_ALL,"GOT DEFAULT INTERRUPT URB STATUS :%d..Please Analyze it...", status);
106 break;
107 }
108
109 StartInterruptUrb(psIntfAdapter);
110
111
112}
113
114int CreateInterruptUrb(PS_INTERFACE_ADAPTER psIntfAdapter)
115{
116 psIntfAdapter->psInterruptUrb = usb_alloc_urb(0, GFP_KERNEL);
117 if (!psIntfAdapter->psInterruptUrb)
118 {
119 BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"Cannot allocate interrupt urb");
120 return -ENOMEM;
121 }
122 psIntfAdapter->psInterruptUrb->transfer_buffer =
123 psIntfAdapter->ulInterruptData;
124 psIntfAdapter->psInterruptUrb->transfer_buffer_length =
125 sizeof(psIntfAdapter->ulInterruptData);
126
127 psIntfAdapter->sIntrIn.int_in_pipe = usb_rcvintpipe(psIntfAdapter->udev,
128 psIntfAdapter->sIntrIn.int_in_endpointAddr);
129
130 usb_fill_int_urb(psIntfAdapter->psInterruptUrb, psIntfAdapter->udev,
131 psIntfAdapter->sIntrIn.int_in_pipe,
132 psIntfAdapter->psInterruptUrb->transfer_buffer,
133 psIntfAdapter->psInterruptUrb->transfer_buffer_length,
134 read_int_callback, psIntfAdapter,
135 psIntfAdapter->sIntrIn.int_in_interval);
136
137 BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"Interrupt Interval: %d\n",
138 psIntfAdapter->sIntrIn.int_in_interval);
139 return 0;
140}
141
142
143INT StartInterruptUrb(PS_INTERFACE_ADAPTER psIntfAdapter)
144{
145 INT status = 0;
146
147 if( FALSE == psIntfAdapter->psAdapter->device_removed &&
148 FALSE == psIntfAdapter->psAdapter->bEndPointHalted &&
149 FALSE == psIntfAdapter->bSuspended &&
150 FALSE == psIntfAdapter->bPreparingForBusSuspend &&
151 FALSE == psIntfAdapter->psAdapter->StopAllXaction)
152 {
153 status = usb_submit_urb(psIntfAdapter->psInterruptUrb, GFP_ATOMIC);
154 if (status)
155 {
156 BCM_DEBUG_PRINT(psIntfAdapter->psAdapter,DBG_TYPE_OTHERS, INTF_INIT, DBG_LVL_ALL,"Cannot send int urb %d\n", status);
157 if(status == -EPIPE)
158 {
159 psIntfAdapter->psAdapter->bEndPointHalted = TRUE ;
160 wake_up(&psIntfAdapter->psAdapter->tx_packet_wait_queue);
161 }
162 }
163 }
164 return status;
165}
166
167/*
168Function: InterfaceEnableInterrupt
169
170Description: This is the hardware specific Function for configuring
171 and enabling the interrupts on the device.
172
173Input parameters: IN PMINI_ADAPTER Adapter - Miniport Adapter Context
174
175
176Return: BCM_STATUS_SUCCESS - If configuring the interrupts was successful.
177 Other - If an error occured.
178*/
179
180void InterfaceEnableInterrupt(PMINI_ADAPTER Adapter)
181{
182
183}
184
185/*
186Function: InterfaceDisableInterrupt
187
188Description: This is the hardware specific Function for disabling the interrupts on the device.
189
190Input parameters: IN PMINI_ADAPTER Adapter - Miniport Adapter Context
191
192
193Return: BCM_STATUS_SUCCESS - If disabling the interrupts was successful.
194 Other - If an error occured.
195*/
196
197void InterfaceDisableInterrupt(PMINI_ADAPTER Adapter)
198{
199
200}
201
202#endif
203
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