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