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805 lines
19 KiB
805 lines
19 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* ASIX AX8817X based USB 2.0 Ethernet Devices |
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* Copyright (C) 2003-2006 David Hollis <[email protected]> |
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* Copyright (C) 2005 Phil Chang <[email protected]> |
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* Copyright (C) 2006 James Painter <[email protected]> |
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* Copyright (c) 2002-2003 TiVo Inc. |
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*/ |
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|
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#include "asix.h" |
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|
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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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static int asix_check_host_enable(struct usbnet *dev, int in_pm) |
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{ |
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int i, ret; |
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u8 smsr; |
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for (i = 0; i < 30; ++i) { |
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ret = asix_set_sw_mii(dev, in_pm); |
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if (ret == -ENODEV || ret == -ETIMEDOUT) |
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break; |
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usleep_range(1000, 1100); |
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ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG, |
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0, 0, 1, &smsr, in_pm); |
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if (ret == -ENODEV) |
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break; |
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else if (ret < 0) |
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continue; |
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else if (smsr & AX_HOST_EN) |
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break; |
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} |
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return ret; |
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} |
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static void reset_asix_rx_fixup_info(struct asix_rx_fixup_info *rx) |
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{ |
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/* Reset the variables that have a lifetime outside of |
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* asix_rx_fixup_internal() so that future processing starts from a |
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* known set of initial conditions. |
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*/ |
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if (rx->ax_skb) { |
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/* Discard any incomplete Ethernet frame in the netdev buffer */ |
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kfree_skb(rx->ax_skb); |
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rx->ax_skb = NULL; |
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} |
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/* Assume the Data header 32-bit word is at the start of the current |
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* or next URB socket buffer so reset all the state variables. |
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*/ |
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rx->remaining = 0; |
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rx->split_head = false; |
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rx->header = 0; |
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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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|
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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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reset_asix_rx_fixup_info(rx); |
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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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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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reset_asix_rx_fixup_info(rx); |
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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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reset_asix_rx_fixup_info(rx); |
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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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skb_put_data(rx->ax_skb, skb->data + offset, |
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copy_length); |
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if (!rx->remaining) { |
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usbnet_skb_return(dev, rx->ax_skb); |
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rx->ax_skb = NULL; |
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} |
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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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reset_asix_rx_fixup_info(rx); |
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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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void asix_rx_fixup_common_free(struct asix_common_private *dp) |
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{ |
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struct asix_rx_fixup_info *rx; |
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if (!dp) |
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return; |
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rx = &dp->rx_fixup_info; |
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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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} |
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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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void *ptr; |
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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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ptr = skb_push(skb, 4); |
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put_unaligned_le32(packet_len, ptr); |
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if (padlen) { |
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put_unaligned_le32(padbytes, skb_tail_pointer(skb)); |
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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, bool internal) |
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{ |
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int ret, offset; |
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u8 buf[2]; |
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ret = asix_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf, 0); |
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if (ret < 0) |
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goto error; |
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if (ret < 2) { |
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ret = -EIO; |
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goto error; |
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} |
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offset = (internal ? 1 : 0); |
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ret = buf[offset]; |
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netdev_dbg(dev->net, "%s PHY address 0x%x\n", |
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internal ? "internal" : "external", ret); |
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return ret; |
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error: |
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netdev_err(dev->net, "Error reading PHY_ID register: %02x\n", ret); |
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return ret; |
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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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/* set MAC link settings according to information from phylib */ |
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void asix_adjust_link(struct net_device *netdev) |
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{ |
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struct phy_device *phydev = netdev->phydev; |
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struct usbnet *dev = netdev_priv(netdev); |
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u16 mode = 0; |
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if (phydev->link) { |
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mode = AX88772_MEDIUM_DEFAULT; |
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if (phydev->duplex == DUPLEX_HALF) |
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mode &= ~AX_MEDIUM_FD; |
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if (phydev->speed != SPEED_100) |
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mode &= ~AX_MEDIUM_PS; |
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} |
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asix_write_medium_mode(dev, mode, 0); |
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phy_print_status(phydev); |
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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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|
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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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|
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memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE); |
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|
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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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int ret; |
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|
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mutex_lock(&dev->phy_mutex); |
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|
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ret = asix_check_host_enable(dev, 0); |
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if (ret == -ENODEV || ret == -ETIMEDOUT) { |
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mutex_unlock(&dev->phy_mutex); |
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return ret; |
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} |
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|
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ret = asix_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id, (__u16)loc, 2, |
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&res, 0); |
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if (ret < 0) |
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goto out; |
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ret = asix_set_hw_mii(dev, 0); |
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out: |
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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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|
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return ret < 0 ? ret : le16_to_cpu(res); |
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} |
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|
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static int __asix_mdio_write(struct net_device *netdev, int phy_id, int loc, |
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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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int ret; |
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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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|
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mutex_lock(&dev->phy_mutex); |
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|
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ret = asix_check_host_enable(dev, 0); |
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if (ret == -ENODEV) |
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goto out; |
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|
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ret = asix_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id, (__u16)loc, 2, |
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&res, 0); |
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if (ret < 0) |
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goto out; |
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|
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ret = asix_set_hw_mii(dev, 0); |
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out: |
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mutex_unlock(&dev->phy_mutex); |
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|
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return ret < 0 ? ret : 0; |
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} |
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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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__asix_mdio_write(netdev, phy_id, loc, val); |
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} |
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|
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/* MDIO read and write wrappers for phylib */ |
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int asix_mdio_bus_read(struct mii_bus *bus, int phy_id, int regnum) |
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{ |
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struct usbnet *priv = bus->priv; |
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|
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return asix_mdio_read(priv->net, phy_id, regnum); |
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} |
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|
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int asix_mdio_bus_write(struct mii_bus *bus, int phy_id, int regnum, u16 val) |
|
{ |
|
struct usbnet *priv = bus->priv; |
|
|
|
return __asix_mdio_write(priv->net, phy_id, regnum, val); |
|
} |
|
|
|
int asix_mdio_read_nopm(struct net_device *netdev, int phy_id, int loc) |
|
{ |
|
struct usbnet *dev = netdev_priv(netdev); |
|
__le16 res; |
|
int ret; |
|
|
|
mutex_lock(&dev->phy_mutex); |
|
|
|
ret = asix_check_host_enable(dev, 1); |
|
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); |
|
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); |
|
|
|
ret = asix_check_host_enable(dev, 1); |
|
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 | WAKE_MAGIC)) |
|
return -EINVAL; |
|
|
|
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_array(last_word - first_word + 1, sizeof(u16), |
|
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_array(last_word - first_word + 1, sizeof(u16), |
|
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; |
|
}
|
|
|