2894c6cd0e
This patch kills struct wb_usb which now only contains a pointer to struct usb_device. Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Pekka Enberg <penberg@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
351 lines
9.1 KiB
C
351 lines
9.1 KiB
C
/*
|
|
* ============================================================================
|
|
* Copyright (c) 1996-2002 Winbond Electronic Corporation
|
|
*
|
|
* Module Name:
|
|
* Wb35Rx.c
|
|
*
|
|
* Abstract:
|
|
* Processing the Rx message from down layer
|
|
*
|
|
* ============================================================================
|
|
*/
|
|
#include <linux/usb.h>
|
|
#include <linux/slab.h>
|
|
|
|
#include "core.h"
|
|
#include "wb35rx_f.h"
|
|
|
|
static void packet_came(struct ieee80211_hw *hw, char *pRxBufferAddress, int PacketSize)
|
|
{
|
|
struct wbsoft_priv *priv = hw->priv;
|
|
struct sk_buff *skb;
|
|
struct ieee80211_rx_status rx_status = {0};
|
|
|
|
if (!priv->enabled)
|
|
return;
|
|
|
|
skb = dev_alloc_skb(PacketSize);
|
|
if (!skb) {
|
|
printk("Not enough memory for packet, FIXME\n");
|
|
return;
|
|
}
|
|
|
|
memcpy(skb_put(skb, PacketSize), pRxBufferAddress, PacketSize);
|
|
|
|
memcpy(IEEE80211_SKB_RXCB(skb), &rx_status, sizeof(rx_status));
|
|
ieee80211_rx_irqsafe(hw, skb);
|
|
}
|
|
|
|
static void Wb35Rx_adjust(struct wb35_descriptor *pRxDes)
|
|
{
|
|
u32 *pRxBufferAddress;
|
|
u32 DecryptionMethod;
|
|
u32 i;
|
|
u16 BufferSize;
|
|
|
|
DecryptionMethod = pRxDes->R01.R01_decryption_method;
|
|
pRxBufferAddress = pRxDes->buffer_address[0];
|
|
BufferSize = pRxDes->buffer_size[0];
|
|
|
|
/* Adjust the last part of data. Only data left */
|
|
BufferSize -= 4; /* For CRC-32 */
|
|
if (DecryptionMethod)
|
|
BufferSize -= 4;
|
|
if (DecryptionMethod == 3) /* For CCMP */
|
|
BufferSize -= 4;
|
|
|
|
/* Adjust the IV field which after 802.11 header and ICV field. */
|
|
if (DecryptionMethod == 1) { /* For WEP */
|
|
for (i = 6; i > 0; i--)
|
|
pRxBufferAddress[i] = pRxBufferAddress[i - 1];
|
|
pRxDes->buffer_address[0] = pRxBufferAddress + 1;
|
|
BufferSize -= 4; /* 4 byte for IV */
|
|
} else if (DecryptionMethod) { /* For TKIP and CCMP */
|
|
for (i = 7; i > 1; i--)
|
|
pRxBufferAddress[i] = pRxBufferAddress[i - 2];
|
|
pRxDes->buffer_address[0] = pRxBufferAddress + 2; /* Update the descriptor, shift 8 byte */
|
|
BufferSize -= 8; /* 8 byte for IV + ICV */
|
|
}
|
|
pRxDes->buffer_size[0] = BufferSize;
|
|
}
|
|
|
|
static u16 Wb35Rx_indicate(struct ieee80211_hw *hw)
|
|
{
|
|
struct wbsoft_priv *priv = hw->priv;
|
|
struct hw_data *pHwData = &priv->sHwData;
|
|
struct wb35_descriptor RxDes;
|
|
struct wb35_rx *pWb35Rx = &pHwData->Wb35Rx;
|
|
u8 *pRxBufferAddress;
|
|
u16 PacketSize;
|
|
u16 stmp, BufferSize, stmp2 = 0;
|
|
u32 RxBufferId;
|
|
|
|
/* Only one thread be allowed to run into the following */
|
|
do {
|
|
RxBufferId = pWb35Rx->RxProcessIndex;
|
|
if (pWb35Rx->RxOwner[RxBufferId]) /* Owner by VM */
|
|
break;
|
|
|
|
pWb35Rx->RxProcessIndex++;
|
|
pWb35Rx->RxProcessIndex %= MAX_USB_RX_BUFFER_NUMBER;
|
|
|
|
pRxBufferAddress = pWb35Rx->pDRx;
|
|
BufferSize = pWb35Rx->RxBufferSize[RxBufferId];
|
|
|
|
/* Parse the bulkin buffer */
|
|
while (BufferSize >= 4) {
|
|
if ((cpu_to_le32(*(u32 *)pRxBufferAddress) & 0x0fffffff) == RX_END_TAG) /* Is ending? */
|
|
break;
|
|
|
|
/* Get the R00 R01 first */
|
|
RxDes.R00.value = le32_to_cpu(*(u32 *)pRxBufferAddress);
|
|
PacketSize = (u16)RxDes.R00.R00_receive_byte_count;
|
|
RxDes.R01.value = le32_to_cpu(*((u32 *)(pRxBufferAddress + 4)));
|
|
/* For new DMA 4k */
|
|
if ((PacketSize & 0x03) > 0)
|
|
PacketSize -= 4;
|
|
|
|
/* Basic check for Rx length. Is length valid? */
|
|
if (PacketSize > MAX_PACKET_SIZE) {
|
|
pr_debug("Serious ERROR : Rx data size too long, size =%d\n", PacketSize);
|
|
pWb35Rx->EP3vm_state = VM_STOP;
|
|
pWb35Rx->Ep3ErrorCount2++;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Wb35Rx_indicate() is called synchronously so it isn't
|
|
* necessary to set "RxDes.Desctriptor_ID = RxBufferID;"
|
|
*/
|
|
BufferSize -= 8; /* subtract 8 byte for 35's USB header length */
|
|
pRxBufferAddress += 8;
|
|
|
|
RxDes.buffer_address[0] = pRxBufferAddress;
|
|
RxDes.buffer_size[0] = PacketSize;
|
|
RxDes.buffer_number = 1;
|
|
RxDes.buffer_start_index = 0;
|
|
RxDes.buffer_total_size = RxDes.buffer_size[0];
|
|
Wb35Rx_adjust(&RxDes);
|
|
|
|
packet_came(hw, pRxBufferAddress, PacketSize);
|
|
|
|
/* Move RxBuffer point to the next */
|
|
stmp = PacketSize + 3;
|
|
stmp &= ~0x03; /* 4n alignment */
|
|
pRxBufferAddress += stmp;
|
|
BufferSize -= stmp;
|
|
stmp2 += stmp;
|
|
}
|
|
|
|
/* Reclaim resource */
|
|
pWb35Rx->RxOwner[RxBufferId] = 1;
|
|
} while (true);
|
|
return stmp2;
|
|
}
|
|
|
|
static void Wb35Rx(struct ieee80211_hw *hw);
|
|
|
|
static void Wb35Rx_Complete(struct urb *urb)
|
|
{
|
|
struct ieee80211_hw *hw = urb->context;
|
|
struct wbsoft_priv *priv = hw->priv;
|
|
struct hw_data *pHwData = &priv->sHwData;
|
|
struct wb35_rx *pWb35Rx = &pHwData->Wb35Rx;
|
|
u8 *pRxBufferAddress;
|
|
u32 SizeCheck;
|
|
u16 BulkLength;
|
|
u32 RxBufferId;
|
|
struct R00_descriptor R00;
|
|
|
|
/* Variable setting */
|
|
pWb35Rx->EP3vm_state = VM_COMPLETED;
|
|
pWb35Rx->EP3VM_status = urb->status; /* Store the last result of Irp */
|
|
|
|
RxBufferId = pWb35Rx->CurrentRxBufferId;
|
|
|
|
pRxBufferAddress = pWb35Rx->pDRx;
|
|
BulkLength = (u16)urb->actual_length;
|
|
|
|
/* The IRP is completed */
|
|
pWb35Rx->EP3vm_state = VM_COMPLETED;
|
|
|
|
if (pHwData->SurpriseRemove) /* Must be here, or RxBufferId is invalid */
|
|
goto error;
|
|
|
|
if (pWb35Rx->rx_halt)
|
|
goto error;
|
|
|
|
/* Start to process the data only in successful condition */
|
|
pWb35Rx->RxOwner[RxBufferId] = 0; /* Set the owner to driver */
|
|
R00.value = le32_to_cpu(*(u32 *)pRxBufferAddress);
|
|
|
|
/* The URB is completed, check the result */
|
|
if (pWb35Rx->EP3VM_status != 0) {
|
|
pr_debug("EP3 IoCompleteRoutine return error\n");
|
|
pWb35Rx->EP3vm_state = VM_STOP;
|
|
goto error;
|
|
}
|
|
|
|
/* For recovering. check if operating in single USB mode */
|
|
if (!HAL_USB_MODE_BURST(pHwData)) {
|
|
SizeCheck = R00.R00_receive_byte_count;
|
|
if ((SizeCheck & 0x03) > 0)
|
|
SizeCheck -= 4;
|
|
SizeCheck = (SizeCheck + 3) & ~0x03;
|
|
SizeCheck += 12; /* 8 + 4 badbeef */
|
|
if ((BulkLength > 1600) ||
|
|
(SizeCheck > 1600) ||
|
|
(BulkLength != SizeCheck) ||
|
|
(BulkLength == 0)) { /* Add for fail Urb */
|
|
pWb35Rx->EP3vm_state = VM_STOP;
|
|
pWb35Rx->Ep3ErrorCount2++;
|
|
}
|
|
}
|
|
|
|
/* Indicating the receiving data */
|
|
pWb35Rx->ByteReceived += BulkLength;
|
|
pWb35Rx->RxBufferSize[RxBufferId] = BulkLength;
|
|
|
|
if (!pWb35Rx->RxOwner[RxBufferId])
|
|
Wb35Rx_indicate(hw);
|
|
|
|
kfree(pWb35Rx->pDRx);
|
|
/* Do the next receive */
|
|
Wb35Rx(hw);
|
|
return;
|
|
|
|
error:
|
|
pWb35Rx->RxOwner[RxBufferId] = 1; /* Set the owner to hardware */
|
|
atomic_dec(&pWb35Rx->RxFireCounter);
|
|
pWb35Rx->EP3vm_state = VM_STOP;
|
|
}
|
|
|
|
/* This function cannot reentrain */
|
|
static void Wb35Rx(struct ieee80211_hw *hw)
|
|
{
|
|
struct wbsoft_priv *priv = hw->priv;
|
|
struct hw_data *pHwData = &priv->sHwData;
|
|
struct wb35_rx *pWb35Rx = &pHwData->Wb35Rx;
|
|
u8 *pRxBufferAddress;
|
|
struct urb *urb = pWb35Rx->RxUrb;
|
|
int retv;
|
|
u32 RxBufferId;
|
|
|
|
/* Issuing URB */
|
|
if (pHwData->SurpriseRemove)
|
|
goto error;
|
|
|
|
if (pWb35Rx->rx_halt)
|
|
goto error;
|
|
|
|
/* Get RxBuffer's ID */
|
|
RxBufferId = pWb35Rx->RxBufferId;
|
|
if (!pWb35Rx->RxOwner[RxBufferId]) {
|
|
/* It's impossible to run here. */
|
|
pr_debug("Rx driver fifo unavailable\n");
|
|
goto error;
|
|
}
|
|
|
|
/* Update buffer point, then start to bulkin the data from USB */
|
|
pWb35Rx->RxBufferId++;
|
|
pWb35Rx->RxBufferId %= MAX_USB_RX_BUFFER_NUMBER;
|
|
|
|
pWb35Rx->CurrentRxBufferId = RxBufferId;
|
|
|
|
pWb35Rx->pDRx = kzalloc(MAX_USB_RX_BUFFER, GFP_ATOMIC);
|
|
if (!pWb35Rx->pDRx) {
|
|
printk("w35und: Rx memory alloc failed\n");
|
|
goto error;
|
|
}
|
|
pRxBufferAddress = pWb35Rx->pDRx;
|
|
|
|
usb_fill_bulk_urb(urb, pHwData->udev,
|
|
usb_rcvbulkpipe(pHwData->udev, 3),
|
|
pRxBufferAddress, MAX_USB_RX_BUFFER,
|
|
Wb35Rx_Complete, hw);
|
|
|
|
pWb35Rx->EP3vm_state = VM_RUNNING;
|
|
|
|
retv = usb_submit_urb(urb, GFP_ATOMIC);
|
|
|
|
if (retv != 0) {
|
|
printk("Rx URB sending error\n");
|
|
goto error;
|
|
}
|
|
return;
|
|
|
|
error:
|
|
/* VM stop */
|
|
pWb35Rx->EP3vm_state = VM_STOP;
|
|
atomic_dec(&pWb35Rx->RxFireCounter);
|
|
}
|
|
|
|
void Wb35Rx_start(struct ieee80211_hw *hw)
|
|
{
|
|
struct wbsoft_priv *priv = hw->priv;
|
|
struct hw_data *pHwData = &priv->sHwData;
|
|
struct wb35_rx *pWb35Rx = &pHwData->Wb35Rx;
|
|
|
|
/* Allow only one thread to run into the Wb35Rx() function */
|
|
if (atomic_inc_return(&pWb35Rx->RxFireCounter) == 1) {
|
|
pWb35Rx->EP3vm_state = VM_RUNNING;
|
|
Wb35Rx(hw);
|
|
} else
|
|
atomic_dec(&pWb35Rx->RxFireCounter);
|
|
}
|
|
|
|
static void Wb35Rx_reset_descriptor(struct hw_data *pHwData)
|
|
{
|
|
struct wb35_rx *pWb35Rx = &pHwData->Wb35Rx;
|
|
u32 i;
|
|
|
|
pWb35Rx->ByteReceived = 0;
|
|
pWb35Rx->RxProcessIndex = 0;
|
|
pWb35Rx->RxBufferId = 0;
|
|
pWb35Rx->EP3vm_state = VM_STOP;
|
|
pWb35Rx->rx_halt = 0;
|
|
|
|
/* Initial the Queue. The last buffer is reserved for used if the Rx resource is unavailable. */
|
|
for (i = 0; i < MAX_USB_RX_BUFFER_NUMBER; i++)
|
|
pWb35Rx->RxOwner[i] = 1;
|
|
}
|
|
|
|
unsigned char Wb35Rx_initial(struct hw_data *pHwData)
|
|
{
|
|
struct wb35_rx *pWb35Rx = &pHwData->Wb35Rx;
|
|
|
|
/* Initial the Buffer Queue */
|
|
Wb35Rx_reset_descriptor(pHwData);
|
|
|
|
pWb35Rx->RxUrb = usb_alloc_urb(0, GFP_ATOMIC);
|
|
return !!pWb35Rx->RxUrb;
|
|
}
|
|
|
|
void Wb35Rx_stop(struct hw_data *pHwData)
|
|
{
|
|
struct wb35_rx *pWb35Rx = &pHwData->Wb35Rx;
|
|
|
|
/* Canceling the Irp if already sends it out. */
|
|
if (pWb35Rx->EP3vm_state == VM_RUNNING) {
|
|
usb_unlink_urb(pWb35Rx->RxUrb); /* Only use unlink, let Wb35Rx_destroy to free them */
|
|
pr_debug("EP3 Rx stop\n");
|
|
}
|
|
}
|
|
|
|
/* Needs process context */
|
|
void Wb35Rx_destroy(struct hw_data *pHwData)
|
|
{
|
|
struct wb35_rx *pWb35Rx = &pHwData->Wb35Rx;
|
|
|
|
do {
|
|
msleep(10); /* Delay for waiting function enter */
|
|
} while (pWb35Rx->EP3vm_state != VM_STOP);
|
|
msleep(10); /* Delay for waiting function exit */
|
|
|
|
if (pWb35Rx->RxUrb)
|
|
usb_free_urb(pWb35Rx->RxUrb);
|
|
pr_debug("Wb35Rx_destroy OK\n");
|
|
}
|
|
|