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![Jeff Kirsher](/assets/img/avatar_default.png)
Several files refer to an old address for the Free Software Foundation in the file header comment. Resolve by replacing the address with the URL <http://www.gnu.org/licenses/> so that we do not have to keep updating the header comments anytime the address changes. CC: Oliver Neukum <oliver@neukum.org> CC: Steve Glendinning <steve.glendinning@shawell.net> CC: Oliver Neukum <oneukum@suse.de> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
582 lines
15 KiB
C
582 lines
15 KiB
C
/*
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* ASIX AX8817X based USB 2.0 Ethernet Devices
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* Copyright (C) 2003-2006 David Hollis <dhollis@davehollis.com>
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* Copyright (C) 2005 Phil Chang <pchang23@sbcglobal.net>
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* Copyright (C) 2006 James Painter <jamie.painter@iname.com>
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* Copyright (c) 2002-2003 TiVo Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "asix.h"
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int asix_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
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u16 size, void *data)
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{
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int ret;
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ret = usbnet_read_cmd(dev, cmd,
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USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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value, index, data, size);
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if (ret != size && ret >= 0)
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return -EINVAL;
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return ret;
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}
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int asix_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
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u16 size, void *data)
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{
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return usbnet_write_cmd(dev, cmd,
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USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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value, index, data, size);
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}
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void asix_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value, u16 index,
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u16 size, void *data)
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{
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usbnet_write_cmd_async(dev, cmd,
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USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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value, index, data, size);
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}
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int asix_rx_fixup_internal(struct usbnet *dev, struct sk_buff *skb,
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struct asix_rx_fixup_info *rx)
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{
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int offset = 0;
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while (offset + sizeof(u16) <= skb->len) {
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u16 remaining = 0;
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unsigned char *data;
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if (!rx->size) {
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if ((skb->len - offset == sizeof(u16)) ||
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rx->split_head) {
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if(!rx->split_head) {
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rx->header = get_unaligned_le16(
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skb->data + offset);
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rx->split_head = true;
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offset += sizeof(u16);
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break;
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} else {
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rx->header |= (get_unaligned_le16(
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skb->data + offset)
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<< 16);
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rx->split_head = false;
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offset += sizeof(u16);
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}
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} else {
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rx->header = get_unaligned_le32(skb->data +
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offset);
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offset += sizeof(u32);
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}
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/* get the packet length */
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rx->size = (u16) (rx->header & 0x7ff);
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if (rx->size != ((~rx->header >> 16) & 0x7ff)) {
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netdev_err(dev->net, "asix_rx_fixup() Bad Header Length 0x%x, offset %d\n",
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rx->header, offset);
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rx->size = 0;
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return 0;
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}
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rx->ax_skb = netdev_alloc_skb_ip_align(dev->net,
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rx->size);
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if (!rx->ax_skb)
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return 0;
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}
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if (rx->size > dev->net->mtu + ETH_HLEN + VLAN_HLEN) {
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netdev_err(dev->net, "asix_rx_fixup() Bad RX Length %d\n",
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rx->size);
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kfree_skb(rx->ax_skb);
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rx->ax_skb = NULL;
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rx->size = 0U;
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return 0;
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}
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if (rx->size > skb->len - offset) {
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remaining = rx->size - (skb->len - offset);
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rx->size = skb->len - offset;
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}
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data = skb_put(rx->ax_skb, rx->size);
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memcpy(data, skb->data + offset, rx->size);
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if (!remaining)
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usbnet_skb_return(dev, rx->ax_skb);
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offset += (rx->size + 1) & 0xfffe;
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rx->size = remaining;
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}
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if (skb->len != offset) {
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netdev_err(dev->net, "asix_rx_fixup() Bad SKB Length %d, %d\n",
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skb->len, offset);
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return 0;
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}
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return 1;
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}
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int asix_rx_fixup_common(struct usbnet *dev, struct sk_buff *skb)
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{
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struct asix_common_private *dp = dev->driver_priv;
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struct asix_rx_fixup_info *rx = &dp->rx_fixup_info;
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return asix_rx_fixup_internal(dev, skb, rx);
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}
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struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
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gfp_t flags)
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{
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int padlen;
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int headroom = skb_headroom(skb);
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int tailroom = skb_tailroom(skb);
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u32 packet_len;
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u32 padbytes = 0xffff0000;
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padlen = ((skb->len + 4) & (dev->maxpacket - 1)) ? 0 : 4;
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/* We need to push 4 bytes in front of frame (packet_len)
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* and maybe add 4 bytes after the end (if padlen is 4)
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*
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* Avoid skb_copy_expand() expensive call, using following rules :
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* - We are allowed to push 4 bytes in headroom if skb_header_cloned()
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* is false (and if we have 4 bytes of headroom)
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* - We are allowed to put 4 bytes at tail if skb_cloned()
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* is false (and if we have 4 bytes of tailroom)
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*
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* TCP packets for example are cloned, but skb_header_release()
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* was called in tcp stack, allowing us to use headroom for our needs.
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*/
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if (!skb_header_cloned(skb) &&
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!(padlen && skb_cloned(skb)) &&
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headroom + tailroom >= 4 + padlen) {
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/* following should not happen, but better be safe */
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if (headroom < 4 ||
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tailroom < padlen) {
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skb->data = memmove(skb->head + 4, skb->data, skb->len);
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skb_set_tail_pointer(skb, skb->len);
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}
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} else {
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struct sk_buff *skb2;
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skb2 = skb_copy_expand(skb, 4, padlen, flags);
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dev_kfree_skb_any(skb);
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skb = skb2;
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if (!skb)
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return NULL;
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}
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packet_len = ((skb->len ^ 0x0000ffff) << 16) + skb->len;
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skb_push(skb, 4);
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cpu_to_le32s(&packet_len);
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skb_copy_to_linear_data(skb, &packet_len, sizeof(packet_len));
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if (padlen) {
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cpu_to_le32s(&padbytes);
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memcpy(skb_tail_pointer(skb), &padbytes, sizeof(padbytes));
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skb_put(skb, sizeof(padbytes));
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}
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return skb;
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}
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int asix_set_sw_mii(struct usbnet *dev)
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{
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int ret;
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ret = asix_write_cmd(dev, AX_CMD_SET_SW_MII, 0x0000, 0, 0, NULL);
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if (ret < 0)
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netdev_err(dev->net, "Failed to enable software MII access\n");
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return ret;
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}
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int asix_set_hw_mii(struct usbnet *dev)
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{
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int ret;
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ret = asix_write_cmd(dev, AX_CMD_SET_HW_MII, 0x0000, 0, 0, NULL);
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if (ret < 0)
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netdev_err(dev->net, "Failed to enable hardware MII access\n");
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return ret;
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}
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int asix_read_phy_addr(struct usbnet *dev, int internal)
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{
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int offset = (internal ? 1 : 0);
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u8 buf[2];
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int ret = asix_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf);
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netdev_dbg(dev->net, "asix_get_phy_addr()\n");
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if (ret < 0) {
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netdev_err(dev->net, "Error reading PHYID register: %02x\n", ret);
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goto out;
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}
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netdev_dbg(dev->net, "asix_get_phy_addr() returning 0x%04x\n",
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*((__le16 *)buf));
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ret = buf[offset];
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out:
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return ret;
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}
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int asix_get_phy_addr(struct usbnet *dev)
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{
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/* return the address of the internal phy */
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return asix_read_phy_addr(dev, 1);
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}
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int asix_sw_reset(struct usbnet *dev, u8 flags)
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{
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int ret;
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ret = asix_write_cmd(dev, AX_CMD_SW_RESET, flags, 0, 0, NULL);
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if (ret < 0)
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netdev_err(dev->net, "Failed to send software reset: %02x\n", ret);
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return ret;
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}
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u16 asix_read_rx_ctl(struct usbnet *dev)
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{
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__le16 v;
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int ret = asix_read_cmd(dev, AX_CMD_READ_RX_CTL, 0, 0, 2, &v);
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if (ret < 0) {
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netdev_err(dev->net, "Error reading RX_CTL register: %02x\n", ret);
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goto out;
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}
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ret = le16_to_cpu(v);
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out:
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return ret;
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}
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int asix_write_rx_ctl(struct usbnet *dev, u16 mode)
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{
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int ret;
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netdev_dbg(dev->net, "asix_write_rx_ctl() - mode = 0x%04x\n", mode);
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ret = asix_write_cmd(dev, AX_CMD_WRITE_RX_CTL, mode, 0, 0, NULL);
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if (ret < 0)
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netdev_err(dev->net, "Failed to write RX_CTL mode to 0x%04x: %02x\n",
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mode, ret);
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return ret;
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}
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u16 asix_read_medium_status(struct usbnet *dev)
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{
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__le16 v;
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int ret = asix_read_cmd(dev, AX_CMD_READ_MEDIUM_STATUS, 0, 0, 2, &v);
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if (ret < 0) {
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netdev_err(dev->net, "Error reading Medium Status register: %02x\n",
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ret);
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return ret; /* TODO: callers not checking for error ret */
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}
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return le16_to_cpu(v);
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}
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int asix_write_medium_mode(struct usbnet *dev, u16 mode)
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{
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int ret;
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netdev_dbg(dev->net, "asix_write_medium_mode() - mode = 0x%04x\n", mode);
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ret = asix_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE, mode, 0, 0, NULL);
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if (ret < 0)
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netdev_err(dev->net, "Failed to write Medium Mode mode to 0x%04x: %02x\n",
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mode, ret);
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return ret;
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}
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int asix_write_gpio(struct usbnet *dev, u16 value, int sleep)
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{
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int ret;
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netdev_dbg(dev->net, "asix_write_gpio() - value = 0x%04x\n", value);
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ret = asix_write_cmd(dev, AX_CMD_WRITE_GPIOS, value, 0, 0, NULL);
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if (ret < 0)
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netdev_err(dev->net, "Failed to write GPIO value 0x%04x: %02x\n",
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value, ret);
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if (sleep)
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msleep(sleep);
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return ret;
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}
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/*
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* AX88772 & AX88178 have a 16-bit RX_CTL value
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*/
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void asix_set_multicast(struct net_device *net)
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{
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struct usbnet *dev = netdev_priv(net);
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struct asix_data *data = (struct asix_data *)&dev->data;
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u16 rx_ctl = AX_DEFAULT_RX_CTL;
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if (net->flags & IFF_PROMISC) {
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rx_ctl |= AX_RX_CTL_PRO;
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} else if (net->flags & IFF_ALLMULTI ||
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netdev_mc_count(net) > AX_MAX_MCAST) {
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rx_ctl |= AX_RX_CTL_AMALL;
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} else if (netdev_mc_empty(net)) {
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/* just broadcast and directed */
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} else {
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/* We use the 20 byte dev->data
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* for our 8 byte filter buffer
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* to avoid allocating memory that
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* is tricky to free later */
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struct netdev_hw_addr *ha;
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u32 crc_bits;
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memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE);
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/* Build the multicast hash filter. */
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netdev_for_each_mc_addr(ha, net) {
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crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;
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data->multi_filter[crc_bits >> 3] |=
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1 << (crc_bits & 7);
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}
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asix_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0,
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AX_MCAST_FILTER_SIZE, data->multi_filter);
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rx_ctl |= AX_RX_CTL_AM;
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}
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asix_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);
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}
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int asix_mdio_read(struct net_device *netdev, int phy_id, int loc)
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{
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struct usbnet *dev = netdev_priv(netdev);
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__le16 res;
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mutex_lock(&dev->phy_mutex);
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asix_set_sw_mii(dev);
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asix_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id,
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(__u16)loc, 2, &res);
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asix_set_hw_mii(dev);
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mutex_unlock(&dev->phy_mutex);
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netdev_dbg(dev->net, "asix_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n",
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phy_id, loc, le16_to_cpu(res));
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return le16_to_cpu(res);
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}
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void asix_mdio_write(struct net_device *netdev, int phy_id, int loc, int val)
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{
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struct usbnet *dev = netdev_priv(netdev);
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__le16 res = cpu_to_le16(val);
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netdev_dbg(dev->net, "asix_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n",
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phy_id, loc, val);
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mutex_lock(&dev->phy_mutex);
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asix_set_sw_mii(dev);
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asix_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id, (__u16)loc, 2, &res);
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asix_set_hw_mii(dev);
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mutex_unlock(&dev->phy_mutex);
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}
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void asix_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
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{
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struct usbnet *dev = netdev_priv(net);
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u8 opt;
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if (asix_read_cmd(dev, AX_CMD_READ_MONITOR_MODE, 0, 0, 1, &opt) < 0) {
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wolinfo->supported = 0;
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wolinfo->wolopts = 0;
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return;
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}
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wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
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wolinfo->wolopts = 0;
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if (opt & AX_MONITOR_LINK)
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wolinfo->wolopts |= WAKE_PHY;
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if (opt & AX_MONITOR_MAGIC)
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wolinfo->wolopts |= WAKE_MAGIC;
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}
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int asix_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
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{
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struct usbnet *dev = netdev_priv(net);
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u8 opt = 0;
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if (wolinfo->wolopts & WAKE_PHY)
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opt |= AX_MONITOR_LINK;
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if (wolinfo->wolopts & WAKE_MAGIC)
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opt |= AX_MONITOR_MAGIC;
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if (asix_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE,
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opt, 0, 0, NULL) < 0)
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return -EINVAL;
|
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|
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return 0;
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}
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|
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int asix_get_eeprom_len(struct net_device *net)
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{
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return AX_EEPROM_LEN;
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}
|
|
|
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int asix_get_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
|
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u8 *data)
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{
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struct usbnet *dev = netdev_priv(net);
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u16 *eeprom_buff;
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int first_word, last_word;
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int i;
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if (eeprom->len == 0)
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return -EINVAL;
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|
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eeprom->magic = AX_EEPROM_MAGIC;
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first_word = eeprom->offset >> 1;
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last_word = (eeprom->offset + eeprom->len - 1) >> 1;
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eeprom_buff = kmalloc(sizeof(u16) * (last_word - first_word + 1),
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GFP_KERNEL);
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if (!eeprom_buff)
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return -ENOMEM;
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/* ax8817x returns 2 bytes from eeprom on read */
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for (i = first_word; i <= last_word; i++) {
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if (asix_read_cmd(dev, AX_CMD_READ_EEPROM, i, 0, 2,
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&(eeprom_buff[i - first_word])) < 0) {
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kfree(eeprom_buff);
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return -EIO;
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}
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}
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memcpy(data, (u8 *)eeprom_buff + (eeprom->offset & 1), eeprom->len);
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kfree(eeprom_buff);
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return 0;
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}
|
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|
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int asix_set_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
|
|
u8 *data)
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|
{
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struct usbnet *dev = netdev_priv(net);
|
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u16 *eeprom_buff;
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int first_word, last_word;
|
|
int i;
|
|
int ret;
|
|
|
|
netdev_dbg(net, "write EEPROM len %d, offset %d, magic 0x%x\n",
|
|
eeprom->len, eeprom->offset, eeprom->magic);
|
|
|
|
if (eeprom->len == 0)
|
|
return -EINVAL;
|
|
|
|
if (eeprom->magic != AX_EEPROM_MAGIC)
|
|
return -EINVAL;
|
|
|
|
first_word = eeprom->offset >> 1;
|
|
last_word = (eeprom->offset + eeprom->len - 1) >> 1;
|
|
|
|
eeprom_buff = kmalloc(sizeof(u16) * (last_word - first_word + 1),
|
|
GFP_KERNEL);
|
|
if (!eeprom_buff)
|
|
return -ENOMEM;
|
|
|
|
/* align data to 16 bit boundaries, read the missing data from
|
|
the EEPROM */
|
|
if (eeprom->offset & 1) {
|
|
ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, first_word, 0, 2,
|
|
&(eeprom_buff[0]));
|
|
if (ret < 0) {
|
|
netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", first_word);
|
|
goto free;
|
|
}
|
|
}
|
|
|
|
if ((eeprom->offset + eeprom->len) & 1) {
|
|
ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, last_word, 0, 2,
|
|
&(eeprom_buff[last_word - first_word]));
|
|
if (ret < 0) {
|
|
netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", last_word);
|
|
goto free;
|
|
}
|
|
}
|
|
|
|
memcpy((u8 *)eeprom_buff + (eeprom->offset & 1), data, eeprom->len);
|
|
|
|
/* write data to EEPROM */
|
|
ret = asix_write_cmd(dev, AX_CMD_WRITE_ENABLE, 0x0000, 0, 0, NULL);
|
|
if (ret < 0) {
|
|
netdev_err(net, "Failed to enable EEPROM write\n");
|
|
goto free;
|
|
}
|
|
msleep(20);
|
|
|
|
for (i = first_word; i <= last_word; i++) {
|
|
netdev_dbg(net, "write to EEPROM at offset 0x%02x, data 0x%04x\n",
|
|
i, eeprom_buff[i - first_word]);
|
|
ret = asix_write_cmd(dev, AX_CMD_WRITE_EEPROM, i,
|
|
eeprom_buff[i - first_word], 0, NULL);
|
|
if (ret < 0) {
|
|
netdev_err(net, "Failed to write EEPROM at offset 0x%02x.\n",
|
|
i);
|
|
goto free;
|
|
}
|
|
msleep(20);
|
|
}
|
|
|
|
ret = asix_write_cmd(dev, AX_CMD_WRITE_DISABLE, 0x0000, 0, 0, NULL);
|
|
if (ret < 0) {
|
|
netdev_err(net, "Failed to disable EEPROM write\n");
|
|
goto free;
|
|
}
|
|
|
|
ret = 0;
|
|
free:
|
|
kfree(eeprom_buff);
|
|
return ret;
|
|
}
|
|
|
|
void asix_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *info)
|
|
{
|
|
/* Inherit standard device info */
|
|
usbnet_get_drvinfo(net, info);
|
|
strlcpy(info->driver, DRIVER_NAME, sizeof(info->driver));
|
|
strlcpy(info->version, DRIVER_VERSION, sizeof(info->version));
|
|
info->eedump_len = AX_EEPROM_LEN;
|
|
}
|
|
|
|
int asix_set_mac_address(struct net_device *net, void *p)
|
|
{
|
|
struct usbnet *dev = netdev_priv(net);
|
|
struct asix_data *data = (struct asix_data *)&dev->data;
|
|
struct sockaddr *addr = p;
|
|
|
|
if (netif_running(net))
|
|
return -EBUSY;
|
|
if (!is_valid_ether_addr(addr->sa_data))
|
|
return -EADDRNOTAVAIL;
|
|
|
|
memcpy(net->dev_addr, addr->sa_data, ETH_ALEN);
|
|
|
|
/* We use the 20 byte dev->data
|
|
* for our 6 byte mac buffer
|
|
* to avoid allocating memory that
|
|
* is tricky to free later */
|
|
memcpy(data->mac_addr, addr->sa_data, ETH_ALEN);
|
|
asix_write_cmd_async(dev, AX_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,
|
|
data->mac_addr);
|
|
|
|
return 0;
|
|
}
|