From c139a814ab1735a8a1fa1b63cad71bd4f8dd8935 Mon Sep 17 00:00:00 2001 From: Pekka Enberg Date: Thu, 30 Oct 2008 19:04:53 +0200 Subject: [PATCH] Staging: w35und: make functions local to wb35rx.c static While there are no functional changes, the diff is quite large because we need to shuffle code around to avoid forward declarations. Acked-by: Pavel Machek Signed-off-by: Pekka Enberg Signed-off-by: Greg Kroah-Hartman --- drivers/staging/winbond/wb35rx.c | 425 +++++++++++++++++++------------------ drivers/staging/winbond/wb35rx_f.h | 6 - 2 files changed, 213 insertions(+), 218 deletions(-) diff --git a/drivers/staging/winbond/wb35rx.c b/drivers/staging/winbond/wb35rx.c index 85b861c..7f8b6d7 100644 --- a/drivers/staging/winbond/wb35rx.c +++ b/drivers/staging/winbond/wb35rx.c @@ -14,85 +14,150 @@ #include "sysdef.h" #include "wb35rx_f.h" -void Wb35Rx_start(struct ieee80211_hw *hw) +static void packet_came(struct ieee80211_hw *hw, char *pRxBufferAddress, int PacketSize) { struct wbsoft_priv *priv = hw->priv; - phw_data_t pHwData = &priv->sHwData; - PWB35RX pWb35Rx = &pHwData->Wb35Rx; + struct sk_buff *skb; + struct ieee80211_rx_status rx_status = {0}; - // 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); + 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); + +/* + rx_status.rate = 10; + rx_status.channel = 1; + rx_status.freq = 12345; + rx_status.phymode = MODE_IEEE80211B; +*/ + + ieee80211_rx_irqsafe(hw, skb, &rx_status); } -// This function cannot reentrain -void Wb35Rx(struct ieee80211_hw *hw) +static void Wb35Rx_adjust(PDESCRIPTOR 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; phw_data_t pHwData = &priv->sHwData; + DESCRIPTOR RxDes; PWB35RX pWb35Rx = &pHwData->Wb35Rx; - u8 * pRxBufferAddress; - struct urb *urb = pWb35Rx->RxUrb; - int retv; - u32 RxBufferId; + u8 * pRxBufferAddress; + u16 PacketSize; + u16 stmp, BufferSize, stmp2 = 0; + u32 RxBufferId; - // - // Issuing URB - // - if (pHwData->SurpriseRemove || pHwData->HwStop) - goto error; + // Only one thread be allowed to run into the following + do { + RxBufferId = pWb35Rx->RxProcessIndex; + if (pWb35Rx->RxOwner[ RxBufferId ]) //Owner by VM + break; - if (pWb35Rx->rx_halt) - goto error; + pWb35Rx->RxProcessIndex++; + pWb35Rx->RxProcessIndex %= MAX_USB_RX_BUFFER_NUMBER; - // Get RxBuffer's ID - RxBufferId = pWb35Rx->RxBufferId; - if (!pWb35Rx->RxOwner[RxBufferId]) { - // It's impossible to run here. - #ifdef _PE_RX_DUMP_ - WBDEBUG(("Rx driver fifo unavailable\n")); - #endif - goto error; - } + pRxBufferAddress = pWb35Rx->pDRx; + BufferSize = pWb35Rx->RxBufferSize[ RxBufferId ]; - // Update buffer point, then start to bulkin the data from USB - pWb35Rx->RxBufferId++; - pWb35Rx->RxBufferId %= MAX_USB_RX_BUFFER_NUMBER; + // Parse the bulkin buffer + while (BufferSize >= 4) { + if ((cpu_to_le32(*(u32 *)pRxBufferAddress) & 0x0fffffff) == RX_END_TAG) //Is ending? 921002.9.a + break; - pWb35Rx->CurrentRxBufferId = RxBufferId; + // 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; - pWb35Rx->pDRx = kzalloc(MAX_USB_RX_BUFFER, GFP_ATOMIC); - if (!pWb35Rx->pDRx) { - printk("w35und: Rx memory alloc failed\n"); - goto error; - } - pRxBufferAddress = pWb35Rx->pDRx; + // Basic check for Rx length. Is length valid? + if (PacketSize > MAX_PACKET_SIZE) { + #ifdef _PE_RX_DUMP_ + WBDEBUG(("Serious ERROR : Rx data size too long, size =%d\n", PacketSize)); + #endif - usb_fill_bulk_urb(urb, pHwData->WbUsb.udev, - usb_rcvbulkpipe(pHwData->WbUsb.udev, 3), - pRxBufferAddress, MAX_USB_RX_BUFFER, - Wb35Rx_Complete, hw); + pWb35Rx->EP3vm_state = VM_STOP; + pWb35Rx->Ep3ErrorCount2++; + break; + } - pWb35Rx->EP3vm_state = VM_RUNNING; + // Start to process Rx buffer +// RxDes.Descriptor_ID = RxBufferId; // Due to synchronous indicate, the field doesn't necessary to use. + BufferSize -= 8; //subtract 8 byte for 35's USB header length + pRxBufferAddress += 8; - retv = usb_submit_urb(urb, GFP_ATOMIC); + 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); - if (retv != 0) { - printk("Rx URB sending error\n"); - goto error; - } - return; + packet_came(hw, pRxBufferAddress, PacketSize); -error: - // VM stop - pWb35Rx->EP3vm_state = VM_STOP; - atomic_dec(&pWb35Rx->RxFireCounter); + // 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; } -void Wb35Rx_Complete(struct urb *urb) +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; @@ -170,49 +235,86 @@ error: pWb35Rx->EP3vm_state = VM_STOP; } -//===================================================================================== -unsigned char Wb35Rx_initial(phw_data_t pHwData) +// This function cannot reentrain +static void Wb35Rx(struct ieee80211_hw *hw) { - PWB35RX pWb35Rx = &pHwData->Wb35Rx; - - // Initial the Buffer Queue - Wb35Rx_reset_descriptor( pHwData ); + struct wbsoft_priv *priv = hw->priv; + phw_data_t pHwData = &priv->sHwData; + PWB35RX pWb35Rx = &pHwData->Wb35Rx; + u8 * pRxBufferAddress; + struct urb *urb = pWb35Rx->RxUrb; + int retv; + u32 RxBufferId; - pWb35Rx->RxUrb = usb_alloc_urb(0, GFP_ATOMIC); - return (!!pWb35Rx->RxUrb); -} + // + // Issuing URB + // + if (pHwData->SurpriseRemove || pHwData->HwStop) + goto error; -void Wb35Rx_stop(phw_data_t pHwData) -{ - PWB35RX pWb35Rx = &pHwData->Wb35Rx; + if (pWb35Rx->rx_halt) + goto error; - // 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 + // Get RxBuffer's ID + RxBufferId = pWb35Rx->RxBufferId; + if (!pWb35Rx->RxOwner[RxBufferId]) { + // It's impossible to run here. #ifdef _PE_RX_DUMP_ - WBDEBUG(("EP3 Rx stop\n")); + WBDEBUG(("Rx driver fifo unavailable\n")); #endif + 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->WbUsb.udev, + usb_rcvbulkpipe(pHwData->WbUsb.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); } -// Needs process context -void Wb35Rx_destroy(phw_data_t pHwData) +void Wb35Rx_start(struct ieee80211_hw *hw) { + struct wbsoft_priv *priv = hw->priv; + phw_data_t pHwData = &priv->sHwData; PWB35RX pWb35Rx = &pHwData->Wb35Rx; - do { - msleep(10); // Delay for waiting function enter 940623.1.a - } while (pWb35Rx->EP3vm_state != VM_STOP); - msleep(10); // Delay for waiting function exit 940623.1.b - - if (pWb35Rx->RxUrb) - usb_free_urb( pWb35Rx->RxUrb ); - #ifdef _PE_RX_DUMP_ - WBDEBUG(("Wb35Rx_destroy OK\n")); - #endif + // 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); } -void Wb35Rx_reset_descriptor( phw_data_t pHwData ) +//===================================================================================== +static void Wb35Rx_reset_descriptor( phw_data_t pHwData ) { PWB35RX pWb35Rx = &pHwData->Wb35Rx; u32 i; @@ -228,145 +330,44 @@ void Wb35Rx_reset_descriptor( phw_data_t pHwData ) pWb35Rx->RxOwner[i] = 1; } -void Wb35Rx_adjust(PDESCRIPTOR pRxDes) +unsigned char Wb35Rx_initial(phw_data_t pHwData) { - u32 * pRxBufferAddress; - u32 DecryptionMethod; - u32 i; - u16 BufferSize; - - DecryptionMethod = pRxDes->R01.R01_decryption_method; - pRxBufferAddress = pRxDes->buffer_address[0]; - BufferSize = pRxDes->buffer_size[0]; + PWB35RX pWb35Rx = &pHwData->Wb35Rx; - // 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; + // Initial the Buffer Queue + Wb35Rx_reset_descriptor( pHwData ); - // 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; + pWb35Rx->RxUrb = usb_alloc_urb(0, GFP_ATOMIC); + return (!!pWb35Rx->RxUrb); } -static void packet_came(struct ieee80211_hw *hw, char *pRxBufferAddress, int PacketSize) +void Wb35Rx_stop(phw_data_t pHwData) { - struct wbsoft_priv *priv = hw->priv; - struct sk_buff *skb; - struct ieee80211_rx_status rx_status = {0}; - - if (!priv->enabled) - return; + PWB35RX pWb35Rx = &pHwData->Wb35Rx; - skb = dev_alloc_skb(PacketSize); - if (!skb) { - printk("Not enough memory for packet, FIXME\n"); - return; + // 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 + #ifdef _PE_RX_DUMP_ + WBDEBUG(("EP3 Rx stop\n")); + #endif } - - memcpy(skb_put(skb, PacketSize), - pRxBufferAddress, - PacketSize); - -/* - rx_status.rate = 10; - rx_status.channel = 1; - rx_status.freq = 12345; - rx_status.phymode = MODE_IEEE80211B; -*/ - - ieee80211_rx_irqsafe(hw, skb, &rx_status); } -u16 Wb35Rx_indicate(struct ieee80211_hw *hw) +// Needs process context +void Wb35Rx_destroy(phw_data_t pHwData) { - struct wbsoft_priv *priv = hw->priv; - phw_data_t pHwData = &priv->sHwData; - DESCRIPTOR RxDes; - PWB35RX pWb35Rx = &pHwData->Wb35Rx; - u8 * pRxBufferAddress; - u16 PacketSize; - u16 stmp, BufferSize, stmp2 = 0; - u32 RxBufferId; + PWB35RX pWb35Rx = &pHwData->Wb35Rx; - // 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? 921002.9.a - 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) { - #ifdef _PE_RX_DUMP_ - WBDEBUG(("Serious ERROR : Rx data size too long, size =%d\n", PacketSize)); - #endif - - pWb35Rx->EP3vm_state = VM_STOP; - pWb35Rx->Ep3ErrorCount2++; - break; - } - - // Start to process Rx buffer -// RxDes.Descriptor_ID = RxBufferId; // Due to synchronous indicate, the field doesn't necessary to use. - 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); + msleep(10); // Delay for waiting function enter 940623.1.a + } while (pWb35Rx->EP3vm_state != VM_STOP); + msleep(10); // Delay for waiting function exit 940623.1.b - return stmp2; + if (pWb35Rx->RxUrb) + usb_free_urb( pWb35Rx->RxUrb ); + #ifdef _PE_RX_DUMP_ + WBDEBUG(("Wb35Rx_destroy OK\n")); + #endif } - diff --git a/drivers/staging/winbond/wb35rx_f.h b/drivers/staging/winbond/wb35rx_f.h index 5585b55..d993041 100644 --- a/drivers/staging/winbond/wb35rx_f.h +++ b/drivers/staging/winbond/wb35rx_f.h @@ -7,15 +7,9 @@ //==================================== // Interface function declare //==================================== -void Wb35Rx_reset_descriptor( phw_data_t pHwData ); unsigned char Wb35Rx_initial( phw_data_t pHwData ); void Wb35Rx_destroy( phw_data_t pHwData ); void Wb35Rx_stop( phw_data_t pHwData ); -u16 Wb35Rx_indicate(struct ieee80211_hw *hw); -void Wb35Rx_adjust( PDESCRIPTOR pRxDes ); void Wb35Rx_start(struct ieee80211_hw *hw); -void Wb35Rx(struct ieee80211_hw *hw); -void Wb35Rx_Complete(struct urb *urb); - #endif -- 2.7.4