![Guenter Roeck](/assets/img/avatar_default.png)
Check answers from USB stack and avoid re-sending the request multiple times if the device does not respond. This fixes the following problem, observed with a probably flaky adapter. [62108.732707] usb 1-3: new high-speed USB device number 5 using xhci_hcd [62108.914421] usb 1-3: New USB device found, idVendor=0b95, idProduct=7720 [62108.914463] usb 1-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [62108.914476] usb 1-3: Product: AX88x72A [62108.914486] usb 1-3: Manufacturer: ASIX Elec. Corp. [62108.914495] usb 1-3: SerialNumber: 000001 [62114.109109] asix 1-3:1.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -110 [62114.109139] asix 1-3:1.0 (unnamed net_device) (uninitialized): Failed to send software reset: ffffff92 [62119.109048] asix 1-3:1.0 (unnamed net_device) (uninitialized): Failed to write reg index 0x0000: -110 ... Since the USB timeout is 5 seconds, and the operation is retried 30 times, this results in [62278.180353] INFO: task mtpd:1725 blocked for more than 120 seconds. [62278.180373] Tainted: G W 3.18.0-13298-g94ace9e #1 [62278.180383] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. ... [62278.180957] kworker/2:0 D 0000000000000000 0 5744 2 0x00000000 [62278.180978] Workqueue: usb_hub_wq hub_event [62278.181029] ffff880177f833b8 0000000000000046 ffff88017fd00000 ffff88017b126d80 [62278.181048] ffff880177f83fd8 ffff880065a71b60 0000000000013340 ffff880065a71b60 [62278.181065] 0000000000000286 0000000103b1c199 0000000000001388 0000000000000002 [62278.181081] Call Trace: [62278.181092] [<ffffffff8e0971fd>] ? console_conditional_schedule+0x2c/0x2c [62278.181105] [<ffffffff8e094f7b>] schedule+0x69/0x6b [62278.181117] [<ffffffff8e0972e0>] schedule_timeout+0xe3/0x11d [62278.181133] [<ffffffff8daadb1b>] ? trace_timer_start+0x51/0x51 [62278.181146] [<ffffffff8e095a05>] do_wait_for_common+0x12f/0x16c [62278.181162] [<ffffffff8da856a7>] ? wake_up_process+0x39/0x39 [62278.181174] [<ffffffff8e095aee>] wait_for_common+0x52/0x6d [62278.181187] [<ffffffff8e095b3b>] wait_for_completion_timeout+0x13/0x15 [62278.181201] [<ffffffff8de676ce>] usb_start_wait_urb+0x93/0xf1 [62278.181214] [<ffffffff8de6780d>] usb_control_msg+0xe1/0x11d [62278.181230] [<ffffffffc037d629>] usbnet_write_cmd+0x9c/0xc6 [usbnet] [62278.181286] [<ffffffffc03af793>] asix_write_cmd+0x4e/0x7e [asix] [62278.181300] [<ffffffffc03afb41>] asix_set_sw_mii+0x25/0x4e [asix] [62278.181314] [<ffffffffc03b001d>] asix_mdio_read+0x51/0x109 [asix] ... Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: David S. Miller <davem@davemloft.net>
742 lines
19 KiB
C
742 lines
19 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, int in_pm)
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{
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int ret;
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int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16);
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BUG_ON(!dev);
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if (!in_pm)
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fn = usbnet_read_cmd;
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else
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fn = usbnet_read_cmd_nopm;
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ret = fn(dev, cmd, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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value, index, data, size);
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if (unlikely(ret < 0))
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netdev_warn(dev->net, "Failed to read reg index 0x%04x: %d\n",
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index, ret);
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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, int in_pm)
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{
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int ret;
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int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16);
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BUG_ON(!dev);
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if (!in_pm)
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fn = usbnet_write_cmd;
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else
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fn = usbnet_write_cmd_nopm;
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ret = fn(dev, cmd, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
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value, index, data, size);
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if (unlikely(ret < 0))
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netdev_warn(dev->net, "Failed to write reg index 0x%04x: %d\n",
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index, ret);
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return ret;
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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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u16 size;
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/* When an Ethernet frame spans multiple URB socket buffers,
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* do a sanity test for the Data header synchronisation.
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* Attempt to detect the situation of the previous socket buffer having
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* been truncated or a socket buffer was missing. These situations
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* cause a discontinuity in the data stream and therefore need to avoid
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* appending bad data to the end of the current netdev socket buffer.
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* Also avoid unnecessarily discarding a good current netdev socket
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* buffer.
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*/
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if (rx->remaining && (rx->remaining + sizeof(u32) <= skb->len)) {
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offset = ((rx->remaining + 1) & 0xfffe);
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rx->header = get_unaligned_le32(skb->data + offset);
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offset = 0;
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size = (u16)(rx->header & 0x7ff);
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if (size != ((~rx->header >> 16) & 0x7ff)) {
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netdev_err(dev->net, "asix_rx_fixup() Data Header synchronisation was lost, remaining %d\n",
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rx->remaining);
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if (rx->ax_skb) {
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kfree_skb(rx->ax_skb);
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rx->ax_skb = NULL;
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/* Discard the incomplete netdev Ethernet frame
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* and assume the Data header is at the start of
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* the current URB socket buffer.
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*/
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}
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rx->remaining = 0;
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}
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}
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while (offset + sizeof(u16) <= skb->len) {
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u16 copy_length;
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unsigned char *data;
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if (!rx->remaining) {
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if (skb->len - offset == sizeof(u16)) {
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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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}
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if (rx->split_head == true) {
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rx->header |= (get_unaligned_le16(
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skb->data + offset) << 16);
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rx->split_head = false;
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offset += sizeof(u16);
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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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/* take frame length from Data header 32-bit word */
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size = (u16)(rx->header & 0x7ff);
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if (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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return 0;
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}
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if (size > dev->net->mtu + ETH_HLEN + VLAN_HLEN) {
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netdev_dbg(dev->net, "asix_rx_fixup() Bad RX Length %d\n",
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size);
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return 0;
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}
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/* Sometimes may fail to get a netdev socket buffer but
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* continue to process the URB socket buffer so that
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* synchronisation of the Ethernet frame Data header
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* word is maintained.
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*/
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rx->ax_skb = netdev_alloc_skb_ip_align(dev->net, size);
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rx->remaining = size;
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}
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if (rx->remaining > skb->len - offset) {
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copy_length = skb->len - offset;
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rx->remaining -= copy_length;
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} else {
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copy_length = rx->remaining;
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rx->remaining = 0;
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}
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if (rx->ax_skb) {
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data = skb_put(rx->ax_skb, copy_length);
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memcpy(data, skb->data + offset, copy_length);
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if (!rx->remaining)
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usbnet_skb_return(dev, rx->ax_skb);
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}
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offset += (copy_length + 1) & 0xfffe;
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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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usbnet_set_skb_tx_stats(skb, 1, 0);
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return skb;
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}
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int asix_set_sw_mii(struct usbnet *dev, int in_pm)
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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, in_pm);
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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, int in_pm)
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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, in_pm);
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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, 0);
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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, int in_pm)
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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, in_pm);
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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, int in_pm)
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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, in_pm);
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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, int in_pm)
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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, in_pm);
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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, int in_pm)
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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,
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0, 0, 2, &v, in_pm);
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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, int in_pm)
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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,
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mode, 0, 0, NULL, in_pm);
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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, int in_pm)
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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, in_pm);
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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;
|
|
u8 smsr;
|
|
int i = 0;
|
|
int ret;
|
|
|
|
mutex_lock(&dev->phy_mutex);
|
|
do {
|
|
ret = asix_set_sw_mii(dev, 0);
|
|
if (ret == -ENODEV || ret == -ETIMEDOUT)
|
|
break;
|
|
usleep_range(1000, 1100);
|
|
ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG,
|
|
0, 0, 1, &smsr, 0);
|
|
} while (!(smsr & AX_HOST_EN) && (i++ < 30) && (ret != -ENODEV));
|
|
if (ret == -ENODEV || ret == -ETIMEDOUT) {
|
|
mutex_unlock(&dev->phy_mutex);
|
|
return ret;
|
|
}
|
|
|
|
asix_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id,
|
|
(__u16)loc, 2, &res, 0);
|
|
asix_set_hw_mii(dev, 0);
|
|
mutex_unlock(&dev->phy_mutex);
|
|
|
|
netdev_dbg(dev->net, "asix_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n",
|
|
phy_id, loc, le16_to_cpu(res));
|
|
|
|
return le16_to_cpu(res);
|
|
}
|
|
|
|
void asix_mdio_write(struct net_device *netdev, int phy_id, int loc, int val)
|
|
{
|
|
struct usbnet *dev = netdev_priv(netdev);
|
|
__le16 res = cpu_to_le16(val);
|
|
u8 smsr;
|
|
int i = 0;
|
|
int ret;
|
|
|
|
netdev_dbg(dev->net, "asix_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n",
|
|
phy_id, loc, val);
|
|
|
|
mutex_lock(&dev->phy_mutex);
|
|
do {
|
|
ret = asix_set_sw_mii(dev, 0);
|
|
if (ret == -ENODEV)
|
|
break;
|
|
usleep_range(1000, 1100);
|
|
ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG,
|
|
0, 0, 1, &smsr, 0);
|
|
} while (!(smsr & AX_HOST_EN) && (i++ < 30) && (ret != -ENODEV));
|
|
if (ret == -ENODEV) {
|
|
mutex_unlock(&dev->phy_mutex);
|
|
return;
|
|
}
|
|
|
|
asix_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id,
|
|
(__u16)loc, 2, &res, 0);
|
|
asix_set_hw_mii(dev, 0);
|
|
mutex_unlock(&dev->phy_mutex);
|
|
}
|
|
|
|
int asix_mdio_read_nopm(struct net_device *netdev, int phy_id, int loc)
|
|
{
|
|
struct usbnet *dev = netdev_priv(netdev);
|
|
__le16 res;
|
|
u8 smsr;
|
|
int i = 0;
|
|
int ret;
|
|
|
|
mutex_lock(&dev->phy_mutex);
|
|
do {
|
|
ret = asix_set_sw_mii(dev, 1);
|
|
if (ret == -ENODEV || ret == -ETIMEDOUT)
|
|
break;
|
|
usleep_range(1000, 1100);
|
|
ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG,
|
|
0, 0, 1, &smsr, 1);
|
|
} while (!(smsr & AX_HOST_EN) && (i++ < 30) && (ret != -ENODEV));
|
|
if (ret == -ENODEV || ret == -ETIMEDOUT) {
|
|
mutex_unlock(&dev->phy_mutex);
|
|
return ret;
|
|
}
|
|
|
|
asix_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id,
|
|
(__u16)loc, 2, &res, 1);
|
|
asix_set_hw_mii(dev, 1);
|
|
mutex_unlock(&dev->phy_mutex);
|
|
|
|
netdev_dbg(dev->net, "asix_mdio_read_nopm() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n",
|
|
phy_id, loc, le16_to_cpu(res));
|
|
|
|
return le16_to_cpu(res);
|
|
}
|
|
|
|
void
|
|
asix_mdio_write_nopm(struct net_device *netdev, int phy_id, int loc, int val)
|
|
{
|
|
struct usbnet *dev = netdev_priv(netdev);
|
|
__le16 res = cpu_to_le16(val);
|
|
u8 smsr;
|
|
int i = 0;
|
|
int ret;
|
|
|
|
netdev_dbg(dev->net, "asix_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n",
|
|
phy_id, loc, val);
|
|
|
|
mutex_lock(&dev->phy_mutex);
|
|
do {
|
|
ret = asix_set_sw_mii(dev, 1);
|
|
if (ret == -ENODEV)
|
|
break;
|
|
usleep_range(1000, 1100);
|
|
ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG,
|
|
0, 0, 1, &smsr, 1);
|
|
} while (!(smsr & AX_HOST_EN) && (i++ < 30) && (ret != -ENODEV));
|
|
if (ret == -ENODEV) {
|
|
mutex_unlock(&dev->phy_mutex);
|
|
return;
|
|
}
|
|
|
|
asix_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id,
|
|
(__u16)loc, 2, &res, 1);
|
|
asix_set_hw_mii(dev, 1);
|
|
mutex_unlock(&dev->phy_mutex);
|
|
}
|
|
|
|
void asix_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
|
|
{
|
|
struct usbnet *dev = netdev_priv(net);
|
|
u8 opt;
|
|
|
|
if (asix_read_cmd(dev, AX_CMD_READ_MONITOR_MODE,
|
|
0, 0, 1, &opt, 0) < 0) {
|
|
wolinfo->supported = 0;
|
|
wolinfo->wolopts = 0;
|
|
return;
|
|
}
|
|
wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
|
|
wolinfo->wolopts = 0;
|
|
if (opt & AX_MONITOR_LINK)
|
|
wolinfo->wolopts |= WAKE_PHY;
|
|
if (opt & AX_MONITOR_MAGIC)
|
|
wolinfo->wolopts |= WAKE_MAGIC;
|
|
}
|
|
|
|
int asix_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
|
|
{
|
|
struct usbnet *dev = netdev_priv(net);
|
|
u8 opt = 0;
|
|
|
|
if (wolinfo->wolopts & WAKE_PHY)
|
|
opt |= AX_MONITOR_LINK;
|
|
if (wolinfo->wolopts & WAKE_MAGIC)
|
|
opt |= AX_MONITOR_MAGIC;
|
|
|
|
if (asix_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE,
|
|
opt, 0, 0, NULL, 0) < 0)
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int asix_get_eeprom_len(struct net_device *net)
|
|
{
|
|
return AX_EEPROM_LEN;
|
|
}
|
|
|
|
int asix_get_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
|
|
u8 *data)
|
|
{
|
|
struct usbnet *dev = netdev_priv(net);
|
|
u16 *eeprom_buff;
|
|
int first_word, last_word;
|
|
int i;
|
|
|
|
if (eeprom->len == 0)
|
|
return -EINVAL;
|
|
|
|
eeprom->magic = AX_EEPROM_MAGIC;
|
|
|
|
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;
|
|
|
|
/* ax8817x returns 2 bytes from eeprom on read */
|
|
for (i = first_word; i <= last_word; i++) {
|
|
if (asix_read_cmd(dev, AX_CMD_READ_EEPROM, i, 0, 2,
|
|
&eeprom_buff[i - first_word], 0) < 0) {
|
|
kfree(eeprom_buff);
|
|
return -EIO;
|
|
}
|
|
}
|
|
|
|
memcpy(data, (u8 *)eeprom_buff + (eeprom->offset & 1), eeprom->len);
|
|
kfree(eeprom_buff);
|
|
return 0;
|
|
}
|
|
|
|
int asix_set_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
|
|
u8 *data)
|
|
{
|
|
struct usbnet *dev = netdev_priv(net);
|
|
u16 *eeprom_buff;
|
|
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], 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], 0);
|
|
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, 0);
|
|
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, 0);
|
|
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, 0);
|
|
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));
|
|
}
|
|
|
|
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;
|
|
}
|