diff options
| author | Ilya Yanok <ilya.yanok@cogentembedded.com> | 2012-07-15 04:43:53 +0000 |
|---|---|---|
| committer | Marek Vasut <marex@denx.de> | 2012-07-18 14:43:42 +0200 |
| commit | e3b31c8d757011cc862d5464217276c3bf5191d5 (patch) | |
| tree | 375065b44b3b429866647dfac6bb56bb7324bc9c /drivers/usb | |
| parent | 2af16f85f105ccb5a49f6a9decd3ff04b84819e3 (diff) | |
smsc95xx: align buffers to cache line size
Align buffers passed to the USB code to cache line size so
they can be DMAed safely.
Signed-off-by: Ilya Yanok <ilya.yanok@cogentembedded.com>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/eth/smsc95xx.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/usb/eth/smsc95xx.c b/drivers/usb/eth/smsc95xx.c index c7aebea4e39..c62a8c112eb 100644 --- a/drivers/usb/eth/smsc95xx.c +++ b/drivers/usb/eth/smsc95xx.c @@ -153,13 +153,15 @@ static int curr_eth_dev; /* index for name of next device detected */ static int smsc95xx_write_reg(struct ueth_data *dev, u32 index, u32 data) { int len; + ALLOC_CACHE_ALIGN_BUFFER(u32, tmpbuf, 1); cpu_to_le32s(&data); + tmpbuf[0] = data; len = usb_control_msg(dev->pusb_dev, usb_sndctrlpipe(dev->pusb_dev, 0), USB_VENDOR_REQUEST_WRITE_REGISTER, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE, - 00, index, &data, sizeof(data), USB_CTRL_SET_TIMEOUT); + 00, index, tmpbuf, sizeof(data), USB_CTRL_SET_TIMEOUT); if (len != sizeof(data)) { debug("smsc95xx_write_reg failed: index=%d, data=%d, len=%d", index, data, len); @@ -171,11 +173,13 @@ static int smsc95xx_write_reg(struct ueth_data *dev, u32 index, u32 data) static int smsc95xx_read_reg(struct ueth_data *dev, u32 index, u32 *data) { int len; + ALLOC_CACHE_ALIGN_BUFFER(u32, tmpbuf, 1); len = usb_control_msg(dev->pusb_dev, usb_rcvctrlpipe(dev->pusb_dev, 0), USB_VENDOR_REQUEST_READ_REGISTER, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE, - 00, index, data, sizeof(data), USB_CTRL_GET_TIMEOUT); + 00, index, tmpbuf, sizeof(data), USB_CTRL_GET_TIMEOUT); + *data = tmpbuf[0]; if (len != sizeof(data)) { debug("smsc95xx_read_reg failed: index=%d, len=%d", index, len); @@ -664,7 +668,8 @@ static int smsc95xx_send(struct eth_device *eth, void* packet, int length) int actual_len; u32 tx_cmd_a; u32 tx_cmd_b; - unsigned char msg[PKTSIZE + sizeof(tx_cmd_a) + sizeof(tx_cmd_b)]; + ALLOC_CACHE_ALIGN_BUFFER(unsigned char, msg, + PKTSIZE + sizeof(tx_cmd_a) + sizeof(tx_cmd_b)); debug("** %s(), len %d, buf %#x\n", __func__, length, (int)msg); if (length > PKTSIZE) @@ -695,7 +700,7 @@ static int smsc95xx_send(struct eth_device *eth, void* packet, int length) static int smsc95xx_recv(struct eth_device *eth) { struct ueth_data *dev = (struct ueth_data *)eth->priv; - static unsigned char recv_buf[AX_RX_URB_SIZE]; + DEFINE_CACHE_ALIGN_BUFFER(unsigned char, recv_buf, AX_RX_URB_SIZE); unsigned char *buf_ptr; int err; int actual_len; |