blob: 125cff57c759e40f50337fb1c5887f77c0c78090 [file] [log] [blame]
David Brownell2e55cc72005-08-31 09:53:10 -07001/*
2 * ASIX AX8817X based USB 2.0 Ethernet Devices
David Hollis933a27d2006-07-29 10:12:50 -04003 * Copyright (C) 2003-2006 David Hollis <dhollis@davehollis.com>
David Brownell2e55cc72005-08-31 09:53:10 -07004 * Copyright (C) 2005 Phil Chang <pchang23@sbcglobal.net>
David Hollis933a27d2006-07-29 10:12:50 -04005 * Copyright (C) 2006 James Painter <jamie.painter@iname.com>
David Brownell2e55cc72005-08-31 09:53:10 -07006 * Copyright (c) 2002-2003 TiVo Inc.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
Jeff Kirsher9cb00072013-12-06 06:28:46 -080019 * along with this program; if not, see <http://www.gnu.org/licenses/>.
David Brownell2e55cc72005-08-31 09:53:10 -070020 */
21
Christian Riesch607740b2012-07-13 05:26:30 +000022#include "asix.h"
David Brownell2e55cc72005-08-31 09:53:10 -070023
Christian Riesch607740b2012-07-13 05:26:30 +000024int asix_read_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
Robert Fossd9fe64e2016-08-29 09:32:15 -040025 u16 size, void *data, int in_pm)
David Brownell2e55cc72005-08-31 09:53:10 -070026{
Ming Lei0bc69ef2012-10-24 19:46:55 +000027 int ret;
Robert Fossd9fe64e2016-08-29 09:32:15 -040028 int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16);
Al Viro51bf2972007-12-22 17:42:36 +000029
Robert Fossd9fe64e2016-08-29 09:32:15 -040030 BUG_ON(!dev);
31
32 if (!in_pm)
33 fn = usbnet_read_cmd;
34 else
35 fn = usbnet_read_cmd_nopm;
36
37 ret = fn(dev, cmd, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
38 value, index, data, size);
39
40 if (unlikely(ret < 0))
41 netdev_warn(dev->net, "Failed to read reg index 0x%04x: %d\n",
42 index, ret);
43
Ming Lei0bc69ef2012-10-24 19:46:55 +000044 return ret;
David Brownell2e55cc72005-08-31 09:53:10 -070045}
46
Christian Riesch607740b2012-07-13 05:26:30 +000047int asix_write_cmd(struct usbnet *dev, u8 cmd, u16 value, u16 index,
Robert Fossd9fe64e2016-08-29 09:32:15 -040048 u16 size, void *data, int in_pm)
David Brownell2e55cc72005-08-31 09:53:10 -070049{
Robert Fossd9fe64e2016-08-29 09:32:15 -040050 int ret;
51 int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16);
52
53 BUG_ON(!dev);
54
55 if (!in_pm)
56 fn = usbnet_write_cmd;
57 else
58 fn = usbnet_write_cmd_nopm;
59
60 ret = fn(dev, cmd, USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
61 value, index, data, size);
62
63 if (unlikely(ret < 0))
64 netdev_warn(dev->net, "Failed to write reg index 0x%04x: %d\n",
65 index, ret);
66
67 return ret;
David Brownell2e55cc72005-08-31 09:53:10 -070068}
69
Christian Riesch607740b2012-07-13 05:26:30 +000070void asix_write_cmd_async(struct usbnet *dev, u8 cmd, u16 value, u16 index,
71 u16 size, void *data)
David Hollis48b1be62006-03-28 20:15:42 -050072{
Ming Lei0bc69ef2012-10-24 19:46:55 +000073 usbnet_write_cmd_async(dev, cmd,
74 USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
75 value, index, data, size);
David Hollis48b1be62006-03-28 20:15:42 -050076}
77
Lucas Stach8b5b6f52013-01-16 04:24:07 +000078int asix_rx_fixup_internal(struct usbnet *dev, struct sk_buff *skb,
79 struct asix_rx_fixup_info *rx)
David Hollis48b1be62006-03-28 20:15:42 -050080{
Eric Dumazeta9e0aca2012-03-14 20:18:32 +000081 int offset = 0;
Dean Jenkins7b0378f2015-10-02 14:29:04 +010082 u16 size;
David Hollis48b1be62006-03-28 20:15:42 -050083
Dean Jenkins3f30b152015-10-02 14:29:07 +010084 /* When an Ethernet frame spans multiple URB socket buffers,
85 * do a sanity test for the Data header synchronisation.
86 * Attempt to detect the situation of the previous socket buffer having
87 * been truncated or a socket buffer was missing. These situations
88 * cause a discontinuity in the data stream and therefore need to avoid
89 * appending bad data to the end of the current netdev socket buffer.
90 * Also avoid unnecessarily discarding a good current netdev socket
91 * buffer.
92 */
93 if (rx->remaining && (rx->remaining + sizeof(u32) <= skb->len)) {
John Stultzcd9e2e52016-05-16 20:36:15 -070094 offset = ((rx->remaining + 1) & 0xfffe);
Dean Jenkins3f30b152015-10-02 14:29:07 +010095 rx->header = get_unaligned_le32(skb->data + offset);
96 offset = 0;
97
98 size = (u16)(rx->header & 0x7ff);
99 if (size != ((~rx->header >> 16) & 0x7ff)) {
100 netdev_err(dev->net, "asix_rx_fixup() Data Header synchronisation was lost, remaining %d\n",
101 rx->remaining);
Dean Jenkins6a570812015-10-02 14:29:08 +0100102 if (rx->ax_skb) {
103 kfree_skb(rx->ax_skb);
104 rx->ax_skb = NULL;
105 /* Discard the incomplete netdev Ethernet frame
106 * and assume the Data header is at the start of
107 * the current URB socket buffer.
108 */
109 }
Dean Jenkins3f30b152015-10-02 14:29:07 +0100110 rx->remaining = 0;
111 }
112 }
113
Lucas Stach8b5b6f52013-01-16 04:24:07 +0000114 while (offset + sizeof(u16) <= skb->len) {
Dean Jenkins7b0378f2015-10-02 14:29:04 +0100115 u16 copy_length;
Lucas Stach8b5b6f52013-01-16 04:24:07 +0000116 unsigned char *data;
David Hollis48b1be62006-03-28 20:15:42 -0500117
Dean Jenkins7b0378f2015-10-02 14:29:04 +0100118 if (!rx->remaining) {
Dean Jenkins3bfc69a2015-10-02 14:29:05 +0100119 if (skb->len - offset == sizeof(u16)) {
120 rx->header = get_unaligned_le16(
121 skb->data + offset);
122 rx->split_head = true;
123 offset += sizeof(u16);
124 break;
125 }
126
127 if (rx->split_head == true) {
128 rx->header |= (get_unaligned_le16(
129 skb->data + offset) << 16);
130 rx->split_head = false;
131 offset += sizeof(u16);
Lucas Stach8b5b6f52013-01-16 04:24:07 +0000132 } else {
133 rx->header = get_unaligned_le32(skb->data +
134 offset);
135 offset += sizeof(u32);
136 }
Marek Vasutbc466e62011-07-26 16:44:46 +0000137
Dean Jenkins7b0378f2015-10-02 14:29:04 +0100138 /* take frame length from Data header 32-bit word */
139 size = (u16)(rx->header & 0x7ff);
140 if (size != ((~rx->header >> 16) & 0x7ff)) {
Lucas Stach8b5b6f52013-01-16 04:24:07 +0000141 netdev_err(dev->net, "asix_rx_fixup() Bad Header Length 0x%x, offset %d\n",
142 rx->header, offset);
Lucas Stach8b5b6f52013-01-16 04:24:07 +0000143 return 0;
144 }
Dean Jenkins9a5ccd82015-10-02 14:29:06 +0100145 if (size > dev->net->mtu + ETH_HLEN + VLAN_HLEN) {
stephen hemmingerb70183d2015-12-17 17:51:16 -0800146 netdev_dbg(dev->net, "asix_rx_fixup() Bad RX Length %d\n",
Dean Jenkins9a5ccd82015-10-02 14:29:06 +0100147 size);
148 return 0;
149 }
150
Dean Jenkins6a570812015-10-02 14:29:08 +0100151 /* Sometimes may fail to get a netdev socket buffer but
152 * continue to process the URB socket buffer so that
153 * synchronisation of the Ethernet frame Data header
154 * word is maintained.
155 */
Dean Jenkins7b0378f2015-10-02 14:29:04 +0100156 rx->ax_skb = netdev_alloc_skb_ip_align(dev->net, size);
Neil Jones3f78d1f2010-05-17 17:18:28 -0700157
Dean Jenkins9a5ccd82015-10-02 14:29:06 +0100158 rx->remaining = size;
David Hollis933a27d2006-07-29 10:12:50 -0400159 }
David Hollis933a27d2006-07-29 10:12:50 -0400160
Dean Jenkins7b0378f2015-10-02 14:29:04 +0100161 if (rx->remaining > skb->len - offset) {
162 copy_length = skb->len - offset;
163 rx->remaining -= copy_length;
164 } else {
165 copy_length = rx->remaining;
166 rx->remaining = 0;
Lucas Stach8b5b6f52013-01-16 04:24:07 +0000167 }
David Hollis933a27d2006-07-29 10:12:50 -0400168
Dean Jenkins6a570812015-10-02 14:29:08 +0100169 if (rx->ax_skb) {
170 data = skb_put(rx->ax_skb, copy_length);
171 memcpy(data, skb->data + offset, copy_length);
172 if (!rx->remaining)
173 usbnet_skb_return(dev, rx->ax_skb);
174 }
Lucas Stach8b5b6f52013-01-16 04:24:07 +0000175
Dean Jenkins7b0378f2015-10-02 14:29:04 +0100176 offset += (copy_length + 1) & 0xfffe;
David Hollis933a27d2006-07-29 10:12:50 -0400177 }
178
Eric Dumazeta9e0aca2012-03-14 20:18:32 +0000179 if (skb->len != offset) {
Lucas Stach8b5b6f52013-01-16 04:24:07 +0000180 netdev_err(dev->net, "asix_rx_fixup() Bad SKB Length %d, %d\n",
181 skb->len, offset);
David Hollis933a27d2006-07-29 10:12:50 -0400182 return 0;
183 }
Lucas Stach8b5b6f52013-01-16 04:24:07 +0000184
David Hollis933a27d2006-07-29 10:12:50 -0400185 return 1;
David Hollis48b1be62006-03-28 20:15:42 -0500186}
187
Lucas Stach8b5b6f52013-01-16 04:24:07 +0000188int asix_rx_fixup_common(struct usbnet *dev, struct sk_buff *skb)
189{
190 struct asix_common_private *dp = dev->driver_priv;
191 struct asix_rx_fixup_info *rx = &dp->rx_fixup_info;
192
193 return asix_rx_fixup_internal(dev, skb, rx);
194}
195
Christian Riesch607740b2012-07-13 05:26:30 +0000196struct sk_buff *asix_tx_fixup(struct usbnet *dev, struct sk_buff *skb,
197 gfp_t flags)
David Hollis48b1be62006-03-28 20:15:42 -0500198{
David Hollis933a27d2006-07-29 10:12:50 -0400199 int padlen;
200 int headroom = skb_headroom(skb);
201 int tailroom = skb_tailroom(skb);
202 u32 packet_len;
203 u32 padbytes = 0xffff0000;
David Hollis48b1be62006-03-28 20:15:42 -0500204
Ingo van Lil2a580942012-04-23 22:05:38 +0000205 padlen = ((skb->len + 4) & (dev->maxpacket - 1)) ? 0 : 4;
David Hollis48b1be62006-03-28 20:15:42 -0500206
Eric Dumazet95162d62012-07-05 04:31:01 +0000207 /* We need to push 4 bytes in front of frame (packet_len)
208 * and maybe add 4 bytes after the end (if padlen is 4)
209 *
210 * Avoid skb_copy_expand() expensive call, using following rules :
211 * - We are allowed to push 4 bytes in headroom if skb_header_cloned()
212 * is false (and if we have 4 bytes of headroom)
213 * - We are allowed to put 4 bytes at tail if skb_cloned()
214 * is false (and if we have 4 bytes of tailroom)
215 *
216 * TCP packets for example are cloned, but skb_header_release()
217 * was called in tcp stack, allowing us to use headroom for our needs.
218 */
219 if (!skb_header_cloned(skb) &&
220 !(padlen && skb_cloned(skb)) &&
221 headroom + tailroom >= 4 + padlen) {
222 /* following should not happen, but better be safe */
223 if (headroom < 4 ||
224 tailroom < padlen) {
David Hollis933a27d2006-07-29 10:12:50 -0400225 skb->data = memmove(skb->head + 4, skb->data, skb->len);
Arnaldo Carvalho de Melo27a884d2007-04-19 20:29:13 -0700226 skb_set_tail_pointer(skb, skb->len);
David Hollis933a27d2006-07-29 10:12:50 -0400227 }
228 } else {
229 struct sk_buff *skb2;
Eric Dumazet95162d62012-07-05 04:31:01 +0000230
David Hollis933a27d2006-07-29 10:12:50 -0400231 skb2 = skb_copy_expand(skb, 4, padlen, flags);
232 dev_kfree_skb_any(skb);
233 skb = skb2;
234 if (!skb)
235 return NULL;
236 }
237
Eric Dumazet95162d62012-07-05 04:31:01 +0000238 packet_len = ((skb->len ^ 0x0000ffff) << 16) + skb->len;
David Hollis933a27d2006-07-29 10:12:50 -0400239 skb_push(skb, 4);
David Hollis57e4f042007-02-05 12:03:03 -0500240 cpu_to_le32s(&packet_len);
Arnaldo Carvalho de Melo27d7ff42007-03-31 11:55:19 -0300241 skb_copy_to_linear_data(skb, &packet_len, sizeof(packet_len));
David Hollis933a27d2006-07-29 10:12:50 -0400242
Ingo van Lil2a580942012-04-23 22:05:38 +0000243 if (padlen) {
David Hollis57e4f042007-02-05 12:03:03 -0500244 cpu_to_le32s(&padbytes);
Arnaldo Carvalho de Melo27a884d2007-04-19 20:29:13 -0700245 memcpy(skb_tail_pointer(skb), &padbytes, sizeof(padbytes));
David Hollis933a27d2006-07-29 10:12:50 -0400246 skb_put(skb, sizeof(padbytes));
247 }
Ben Hutchings1e9e39f2015-02-26 19:34:37 +0000248
Ben Hutchings7a1e8902015-03-25 21:41:33 +0100249 usbnet_set_skb_tx_stats(skb, 1, 0);
David Hollis933a27d2006-07-29 10:12:50 -0400250 return skb;
David Hollis48b1be62006-03-28 20:15:42 -0500251}
252
Robert Fossd9fe64e2016-08-29 09:32:15 -0400253int asix_set_sw_mii(struct usbnet *dev, int in_pm)
David Brownell2e55cc72005-08-31 09:53:10 -0700254{
David Hollis933a27d2006-07-29 10:12:50 -0400255 int ret;
Robert Fossd9fe64e2016-08-29 09:32:15 -0400256 ret = asix_write_cmd(dev, AX_CMD_SET_SW_MII, 0x0000, 0, 0, NULL, in_pm);
257
David Hollis933a27d2006-07-29 10:12:50 -0400258 if (ret < 0)
Joe Perches60b86752010-02-17 10:30:23 +0000259 netdev_err(dev->net, "Failed to enable software MII access\n");
David Hollis933a27d2006-07-29 10:12:50 -0400260 return ret;
David Brownell2e55cc72005-08-31 09:53:10 -0700261}
262
Robert Fossd9fe64e2016-08-29 09:32:15 -0400263int asix_set_hw_mii(struct usbnet *dev, int in_pm)
David Hollis933a27d2006-07-29 10:12:50 -0400264{
265 int ret;
Robert Fossd9fe64e2016-08-29 09:32:15 -0400266 ret = asix_write_cmd(dev, AX_CMD_SET_HW_MII, 0x0000, 0, 0, NULL, in_pm);
David Hollis933a27d2006-07-29 10:12:50 -0400267 if (ret < 0)
Joe Perches60b86752010-02-17 10:30:23 +0000268 netdev_err(dev->net, "Failed to enable hardware MII access\n");
David Hollis933a27d2006-07-29 10:12:50 -0400269 return ret;
270}
271
Christian Riesch16626b02012-07-13 05:26:31 +0000272int asix_read_phy_addr(struct usbnet *dev, int internal)
David Hollis933a27d2006-07-29 10:12:50 -0400273{
Christian Riesch16626b02012-07-13 05:26:31 +0000274 int offset = (internal ? 1 : 0);
Al Viro51bf2972007-12-22 17:42:36 +0000275 u8 buf[2];
Robert Fossd9fe64e2016-08-29 09:32:15 -0400276 int ret = asix_read_cmd(dev, AX_CMD_READ_PHY_ID, 0, 0, 2, buf, 0);
David Hollis933a27d2006-07-29 10:12:50 -0400277
Joe Perches60b86752010-02-17 10:30:23 +0000278 netdev_dbg(dev->net, "asix_get_phy_addr()\n");
David Hollis933a27d2006-07-29 10:12:50 -0400279
Al Viro51bf2972007-12-22 17:42:36 +0000280 if (ret < 0) {
Joe Perches60b86752010-02-17 10:30:23 +0000281 netdev_err(dev->net, "Error reading PHYID register: %02x\n", ret);
Al Viro51bf2972007-12-22 17:42:36 +0000282 goto out;
David Hollis933a27d2006-07-29 10:12:50 -0400283 }
Joe Perches60b86752010-02-17 10:30:23 +0000284 netdev_dbg(dev->net, "asix_get_phy_addr() returning 0x%04x\n",
285 *((__le16 *)buf));
Christian Riesch16626b02012-07-13 05:26:31 +0000286 ret = buf[offset];
Al Viro51bf2972007-12-22 17:42:36 +0000287
288out:
David Hollis933a27d2006-07-29 10:12:50 -0400289 return ret;
290}
291
Christian Riesch16626b02012-07-13 05:26:31 +0000292int asix_get_phy_addr(struct usbnet *dev)
293{
294 /* return the address of the internal phy */
295 return asix_read_phy_addr(dev, 1);
296}
297
298
Robert Fossd9fe64e2016-08-29 09:32:15 -0400299int asix_sw_reset(struct usbnet *dev, u8 flags, int in_pm)
David Hollis933a27d2006-07-29 10:12:50 -0400300{
301 int ret;
302
Robert Fossd9fe64e2016-08-29 09:32:15 -0400303 ret = asix_write_cmd(dev, AX_CMD_SW_RESET, flags, 0, 0, NULL, in_pm);
David Hollis933a27d2006-07-29 10:12:50 -0400304 if (ret < 0)
Joe Perches60b86752010-02-17 10:30:23 +0000305 netdev_err(dev->net, "Failed to send software reset: %02x\n", ret);
David Hollis933a27d2006-07-29 10:12:50 -0400306
307 return ret;
308}
309
Robert Fossd9fe64e2016-08-29 09:32:15 -0400310u16 asix_read_rx_ctl(struct usbnet *dev, int in_pm)
David Hollis933a27d2006-07-29 10:12:50 -0400311{
Al Viro51bf2972007-12-22 17:42:36 +0000312 __le16 v;
Robert Fossd9fe64e2016-08-29 09:32:15 -0400313 int ret = asix_read_cmd(dev, AX_CMD_READ_RX_CTL, 0, 0, 2, &v, in_pm);
David Hollis933a27d2006-07-29 10:12:50 -0400314
Al Viro51bf2972007-12-22 17:42:36 +0000315 if (ret < 0) {
Joe Perches60b86752010-02-17 10:30:23 +0000316 netdev_err(dev->net, "Error reading RX_CTL register: %02x\n", ret);
Al Viro51bf2972007-12-22 17:42:36 +0000317 goto out;
David Hollis933a27d2006-07-29 10:12:50 -0400318 }
Al Viro51bf2972007-12-22 17:42:36 +0000319 ret = le16_to_cpu(v);
320out:
David Hollis933a27d2006-07-29 10:12:50 -0400321 return ret;
322}
323
Robert Fossd9fe64e2016-08-29 09:32:15 -0400324int asix_write_rx_ctl(struct usbnet *dev, u16 mode, int in_pm)
David Hollis933a27d2006-07-29 10:12:50 -0400325{
326 int ret;
327
Joe Perches60b86752010-02-17 10:30:23 +0000328 netdev_dbg(dev->net, "asix_write_rx_ctl() - mode = 0x%04x\n", mode);
Robert Fossd9fe64e2016-08-29 09:32:15 -0400329 ret = asix_write_cmd(dev, AX_CMD_WRITE_RX_CTL, mode, 0, 0, NULL, in_pm);
David Hollis933a27d2006-07-29 10:12:50 -0400330 if (ret < 0)
Joe Perches60b86752010-02-17 10:30:23 +0000331 netdev_err(dev->net, "Failed to write RX_CTL mode to 0x%04x: %02x\n",
332 mode, ret);
David Hollis933a27d2006-07-29 10:12:50 -0400333
334 return ret;
335}
336
Robert Fossd9fe64e2016-08-29 09:32:15 -0400337u16 asix_read_medium_status(struct usbnet *dev, int in_pm)
David Hollis933a27d2006-07-29 10:12:50 -0400338{
Al Viro51bf2972007-12-22 17:42:36 +0000339 __le16 v;
Robert Fossd9fe64e2016-08-29 09:32:15 -0400340 int ret = asix_read_cmd(dev, AX_CMD_READ_MEDIUM_STATUS,
341 0, 0, 2, &v, in_pm);
David Hollis933a27d2006-07-29 10:12:50 -0400342
Al Viro51bf2972007-12-22 17:42:36 +0000343 if (ret < 0) {
Joe Perches60b86752010-02-17 10:30:23 +0000344 netdev_err(dev->net, "Error reading Medium Status register: %02x\n",
345 ret);
Grant Grundler83e1b912011-10-04 09:55:18 +0000346 return ret; /* TODO: callers not checking for error ret */
David Hollis933a27d2006-07-29 10:12:50 -0400347 }
Grant Grundler83e1b912011-10-04 09:55:18 +0000348
349 return le16_to_cpu(v);
350
David Hollis933a27d2006-07-29 10:12:50 -0400351}
352
Robert Fossd9fe64e2016-08-29 09:32:15 -0400353int asix_write_medium_mode(struct usbnet *dev, u16 mode, int in_pm)
David Hollis933a27d2006-07-29 10:12:50 -0400354{
355 int ret;
356
Joe Perches60b86752010-02-17 10:30:23 +0000357 netdev_dbg(dev->net, "asix_write_medium_mode() - mode = 0x%04x\n", mode);
Robert Fossd9fe64e2016-08-29 09:32:15 -0400358 ret = asix_write_cmd(dev, AX_CMD_WRITE_MEDIUM_MODE,
359 mode, 0, 0, NULL, in_pm);
David Hollis933a27d2006-07-29 10:12:50 -0400360 if (ret < 0)
Joe Perches60b86752010-02-17 10:30:23 +0000361 netdev_err(dev->net, "Failed to write Medium Mode mode to 0x%04x: %02x\n",
362 mode, ret);
David Hollis933a27d2006-07-29 10:12:50 -0400363
364 return ret;
365}
366
Robert Fossd9fe64e2016-08-29 09:32:15 -0400367int asix_write_gpio(struct usbnet *dev, u16 value, int sleep, int in_pm)
David Hollis933a27d2006-07-29 10:12:50 -0400368{
369 int ret;
370
Joe Perches60b86752010-02-17 10:30:23 +0000371 netdev_dbg(dev->net, "asix_write_gpio() - value = 0x%04x\n", value);
Robert Fossd9fe64e2016-08-29 09:32:15 -0400372 ret = asix_write_cmd(dev, AX_CMD_WRITE_GPIOS, value, 0, 0, NULL, in_pm);
David Hollis933a27d2006-07-29 10:12:50 -0400373 if (ret < 0)
Joe Perches60b86752010-02-17 10:30:23 +0000374 netdev_err(dev->net, "Failed to write GPIO value 0x%04x: %02x\n",
375 value, ret);
David Hollis933a27d2006-07-29 10:12:50 -0400376
377 if (sleep)
378 msleep(sleep);
379
380 return ret;
381}
382
383/*
384 * AX88772 & AX88178 have a 16-bit RX_CTL value
385 */
Christian Riesch607740b2012-07-13 05:26:30 +0000386void asix_set_multicast(struct net_device *net)
David Brownell2e55cc72005-08-31 09:53:10 -0700387{
388 struct usbnet *dev = netdev_priv(net);
David Hollis48b1be62006-03-28 20:15:42 -0500389 struct asix_data *data = (struct asix_data *)&dev->data;
David Hollis933a27d2006-07-29 10:12:50 -0400390 u16 rx_ctl = AX_DEFAULT_RX_CTL;
David Brownell2e55cc72005-08-31 09:53:10 -0700391
392 if (net->flags & IFF_PROMISC) {
David Hollis933a27d2006-07-29 10:12:50 -0400393 rx_ctl |= AX_RX_CTL_PRO;
Joe Perches8e95a202009-12-03 07:58:21 +0000394 } else if (net->flags & IFF_ALLMULTI ||
Jiri Pirko4cd24ea2010-02-08 04:30:35 +0000395 netdev_mc_count(net) > AX_MAX_MCAST) {
David Hollis933a27d2006-07-29 10:12:50 -0400396 rx_ctl |= AX_RX_CTL_AMALL;
Jiri Pirko4cd24ea2010-02-08 04:30:35 +0000397 } else if (netdev_mc_empty(net)) {
David Brownell2e55cc72005-08-31 09:53:10 -0700398 /* just broadcast and directed */
399 } else {
400 /* We use the 20 byte dev->data
401 * for our 8 byte filter buffer
402 * to avoid allocating memory that
403 * is tricky to free later */
Jiri Pirko22bedad32010-04-01 21:22:57 +0000404 struct netdev_hw_addr *ha;
David Brownell2e55cc72005-08-31 09:53:10 -0700405 u32 crc_bits;
David Brownell2e55cc72005-08-31 09:53:10 -0700406
407 memset(data->multi_filter, 0, AX_MCAST_FILTER_SIZE);
408
409 /* Build the multicast hash filter. */
Jiri Pirko22bedad32010-04-01 21:22:57 +0000410 netdev_for_each_mc_addr(ha, net) {
411 crc_bits = ether_crc(ETH_ALEN, ha->addr) >> 26;
David Brownell2e55cc72005-08-31 09:53:10 -0700412 data->multi_filter[crc_bits >> 3] |=
413 1 << (crc_bits & 7);
David Brownell2e55cc72005-08-31 09:53:10 -0700414 }
415
David Hollis48b1be62006-03-28 20:15:42 -0500416 asix_write_cmd_async(dev, AX_CMD_WRITE_MULTI_FILTER, 0, 0,
David Brownell2e55cc72005-08-31 09:53:10 -0700417 AX_MCAST_FILTER_SIZE, data->multi_filter);
418
David Hollis933a27d2006-07-29 10:12:50 -0400419 rx_ctl |= AX_RX_CTL_AM;
David Brownell2e55cc72005-08-31 09:53:10 -0700420 }
421
David Hollis48b1be62006-03-28 20:15:42 -0500422 asix_write_cmd_async(dev, AX_CMD_WRITE_RX_CTL, rx_ctl, 0, 0, NULL);
David Brownell2e55cc72005-08-31 09:53:10 -0700423}
424
Christian Riesch607740b2012-07-13 05:26:30 +0000425int asix_mdio_read(struct net_device *netdev, int phy_id, int loc)
David Brownell2e55cc72005-08-31 09:53:10 -0700426{
427 struct usbnet *dev = netdev_priv(netdev);
Al Viro51bf2972007-12-22 17:42:36 +0000428 __le16 res;
Robert Fossd9fe64e2016-08-29 09:32:15 -0400429 u8 smsr;
430 int i = 0;
Robert Foss8a46f662016-08-29 09:32:16 -0400431 int ret;
David Brownell2e55cc72005-08-31 09:53:10 -0700432
Arnd Bergmanna9fc6332006-10-09 00:08:02 +0200433 mutex_lock(&dev->phy_mutex);
Robert Fossd9fe64e2016-08-29 09:32:15 -0400434 do {
Robert Foss8a46f662016-08-29 09:32:16 -0400435 ret = asix_set_sw_mii(dev, 0);
Guenter Roeck610df1d2016-10-13 16:43:16 -0700436 if (ret == -ENODEV || ret == -ETIMEDOUT)
Robert Foss8a46f662016-08-29 09:32:16 -0400437 break;
Robert Fossd9fe64e2016-08-29 09:32:15 -0400438 usleep_range(1000, 1100);
Robert Foss8a46f662016-08-29 09:32:16 -0400439 ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG,
440 0, 0, 1, &smsr, 0);
441 } while (!(smsr & AX_HOST_EN) && (i++ < 30) && (ret != -ENODEV));
Guenter Roeck610df1d2016-10-13 16:43:16 -0700442 if (ret == -ENODEV || ret == -ETIMEDOUT) {
Robert Foss8a46f662016-08-29 09:32:16 -0400443 mutex_unlock(&dev->phy_mutex);
444 return ret;
445 }
Robert Fossd9fe64e2016-08-29 09:32:15 -0400446
David Hollis48b1be62006-03-28 20:15:42 -0500447 asix_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id,
Robert Fossd9fe64e2016-08-29 09:32:15 -0400448 (__u16)loc, 2, &res, 0);
449 asix_set_hw_mii(dev, 0);
Arnd Bergmanna9fc6332006-10-09 00:08:02 +0200450 mutex_unlock(&dev->phy_mutex);
David Brownell2e55cc72005-08-31 09:53:10 -0700451
Joe Perches60b86752010-02-17 10:30:23 +0000452 netdev_dbg(dev->net, "asix_mdio_read() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n",
Robert Fossd9fe64e2016-08-29 09:32:15 -0400453 phy_id, loc, le16_to_cpu(res));
David Brownell2e55cc72005-08-31 09:53:10 -0700454
Al Viro51bf2972007-12-22 17:42:36 +0000455 return le16_to_cpu(res);
David Brownell2e55cc72005-08-31 09:53:10 -0700456}
457
Christian Riesch607740b2012-07-13 05:26:30 +0000458void asix_mdio_write(struct net_device *netdev, int phy_id, int loc, int val)
David Brownell2e55cc72005-08-31 09:53:10 -0700459{
460 struct usbnet *dev = netdev_priv(netdev);
Al Viro51bf2972007-12-22 17:42:36 +0000461 __le16 res = cpu_to_le16(val);
Robert Fossd9fe64e2016-08-29 09:32:15 -0400462 u8 smsr;
463 int i = 0;
Robert Foss8a46f662016-08-29 09:32:16 -0400464 int ret;
David Brownell2e55cc72005-08-31 09:53:10 -0700465
Joe Perches60b86752010-02-17 10:30:23 +0000466 netdev_dbg(dev->net, "asix_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n",
Robert Fossd9fe64e2016-08-29 09:32:15 -0400467 phy_id, loc, val);
468
Arnd Bergmanna9fc6332006-10-09 00:08:02 +0200469 mutex_lock(&dev->phy_mutex);
Robert Fossd9fe64e2016-08-29 09:32:15 -0400470 do {
Robert Foss8a46f662016-08-29 09:32:16 -0400471 ret = asix_set_sw_mii(dev, 0);
472 if (ret == -ENODEV)
473 break;
Robert Fossd9fe64e2016-08-29 09:32:15 -0400474 usleep_range(1000, 1100);
Robert Foss8a46f662016-08-29 09:32:16 -0400475 ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG,
476 0, 0, 1, &smsr, 0);
477 } while (!(smsr & AX_HOST_EN) && (i++ < 30) && (ret != -ENODEV));
478 if (ret == -ENODEV) {
479 mutex_unlock(&dev->phy_mutex);
480 return;
481 }
Robert Fossd9fe64e2016-08-29 09:32:15 -0400482
483 asix_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id,
484 (__u16)loc, 2, &res, 0);
485 asix_set_hw_mii(dev, 0);
486 mutex_unlock(&dev->phy_mutex);
487}
488
489int asix_mdio_read_nopm(struct net_device *netdev, int phy_id, int loc)
490{
491 struct usbnet *dev = netdev_priv(netdev);
492 __le16 res;
493 u8 smsr;
494 int i = 0;
Robert Foss8a46f662016-08-29 09:32:16 -0400495 int ret;
Robert Fossd9fe64e2016-08-29 09:32:15 -0400496
497 mutex_lock(&dev->phy_mutex);
498 do {
Robert Foss8a46f662016-08-29 09:32:16 -0400499 ret = asix_set_sw_mii(dev, 1);
Guenter Roeck610df1d2016-10-13 16:43:16 -0700500 if (ret == -ENODEV || ret == -ETIMEDOUT)
Robert Foss8a46f662016-08-29 09:32:16 -0400501 break;
Robert Fossd9fe64e2016-08-29 09:32:15 -0400502 usleep_range(1000, 1100);
Robert Foss8a46f662016-08-29 09:32:16 -0400503 ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG,
504 0, 0, 1, &smsr, 1);
505 } while (!(smsr & AX_HOST_EN) && (i++ < 30) && (ret != -ENODEV));
Guenter Roeck610df1d2016-10-13 16:43:16 -0700506 if (ret == -ENODEV || ret == -ETIMEDOUT) {
Robert Foss8a46f662016-08-29 09:32:16 -0400507 mutex_unlock(&dev->phy_mutex);
508 return ret;
509 }
Robert Fossd9fe64e2016-08-29 09:32:15 -0400510
511 asix_read_cmd(dev, AX_CMD_READ_MII_REG, phy_id,
512 (__u16)loc, 2, &res, 1);
513 asix_set_hw_mii(dev, 1);
514 mutex_unlock(&dev->phy_mutex);
515
516 netdev_dbg(dev->net, "asix_mdio_read_nopm() phy_id=0x%02x, loc=0x%02x, returns=0x%04x\n",
517 phy_id, loc, le16_to_cpu(res));
518
519 return le16_to_cpu(res);
520}
521
522void
523asix_mdio_write_nopm(struct net_device *netdev, int phy_id, int loc, int val)
524{
525 struct usbnet *dev = netdev_priv(netdev);
526 __le16 res = cpu_to_le16(val);
527 u8 smsr;
528 int i = 0;
Robert Foss8a46f662016-08-29 09:32:16 -0400529 int ret;
Robert Fossd9fe64e2016-08-29 09:32:15 -0400530
531 netdev_dbg(dev->net, "asix_mdio_write() phy_id=0x%02x, loc=0x%02x, val=0x%04x\n",
532 phy_id, loc, val);
533
534 mutex_lock(&dev->phy_mutex);
535 do {
Robert Foss8a46f662016-08-29 09:32:16 -0400536 ret = asix_set_sw_mii(dev, 1);
537 if (ret == -ENODEV)
538 break;
Robert Fossd9fe64e2016-08-29 09:32:15 -0400539 usleep_range(1000, 1100);
Robert Foss8a46f662016-08-29 09:32:16 -0400540 ret = asix_read_cmd(dev, AX_CMD_STATMNGSTS_REG,
541 0, 0, 1, &smsr, 1);
542 } while (!(smsr & AX_HOST_EN) && (i++ < 30) && (ret != -ENODEV));
543 if (ret == -ENODEV) {
544 mutex_unlock(&dev->phy_mutex);
545 return;
546 }
Robert Fossd9fe64e2016-08-29 09:32:15 -0400547
548 asix_write_cmd(dev, AX_CMD_WRITE_MII_REG, phy_id,
549 (__u16)loc, 2, &res, 1);
550 asix_set_hw_mii(dev, 1);
Arnd Bergmanna9fc6332006-10-09 00:08:02 +0200551 mutex_unlock(&dev->phy_mutex);
David Brownell2e55cc72005-08-31 09:53:10 -0700552}
553
Christian Riesch607740b2012-07-13 05:26:30 +0000554void asix_get_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
David Brownell2e55cc72005-08-31 09:53:10 -0700555{
556 struct usbnet *dev = netdev_priv(net);
557 u8 opt;
558
Robert Fossd9fe64e2016-08-29 09:32:15 -0400559 if (asix_read_cmd(dev, AX_CMD_READ_MONITOR_MODE,
560 0, 0, 1, &opt, 0) < 0) {
David Brownell2e55cc72005-08-31 09:53:10 -0700561 wolinfo->supported = 0;
562 wolinfo->wolopts = 0;
563 return;
564 }
565 wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
566 wolinfo->wolopts = 0;
allanf87ce5b2011-12-22 20:38:51 +0000567 if (opt & AX_MONITOR_LINK)
568 wolinfo->wolopts |= WAKE_PHY;
569 if (opt & AX_MONITOR_MAGIC)
570 wolinfo->wolopts |= WAKE_MAGIC;
David Brownell2e55cc72005-08-31 09:53:10 -0700571}
572
Christian Riesch607740b2012-07-13 05:26:30 +0000573int asix_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
David Brownell2e55cc72005-08-31 09:53:10 -0700574{
575 struct usbnet *dev = netdev_priv(net);
576 u8 opt = 0;
David Brownell2e55cc72005-08-31 09:53:10 -0700577
578 if (wolinfo->wolopts & WAKE_PHY)
579 opt |= AX_MONITOR_LINK;
580 if (wolinfo->wolopts & WAKE_MAGIC)
581 opt |= AX_MONITOR_MAGIC;
David Brownell2e55cc72005-08-31 09:53:10 -0700582
David Hollis48b1be62006-03-28 20:15:42 -0500583 if (asix_write_cmd(dev, AX_CMD_WRITE_MONITOR_MODE,
Robert Fossd9fe64e2016-08-29 09:32:15 -0400584 opt, 0, 0, NULL, 0) < 0)
David Brownell2e55cc72005-08-31 09:53:10 -0700585 return -EINVAL;
586
587 return 0;
588}
589
Christian Riesch607740b2012-07-13 05:26:30 +0000590int asix_get_eeprom_len(struct net_device *net)
David Brownell2e55cc72005-08-31 09:53:10 -0700591{
Christian Rieschceb02c92012-07-19 00:23:06 +0000592 return AX_EEPROM_LEN;
David Brownell2e55cc72005-08-31 09:53:10 -0700593}
594
Christian Riesch607740b2012-07-13 05:26:30 +0000595int asix_get_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
596 u8 *data)
David Brownell2e55cc72005-08-31 09:53:10 -0700597{
598 struct usbnet *dev = netdev_priv(net);
Christian Rieschceb02c92012-07-19 00:23:06 +0000599 u16 *eeprom_buff;
600 int first_word, last_word;
David Brownell2e55cc72005-08-31 09:53:10 -0700601 int i;
602
Christian Rieschceb02c92012-07-19 00:23:06 +0000603 if (eeprom->len == 0)
David Brownell2e55cc72005-08-31 09:53:10 -0700604 return -EINVAL;
605
606 eeprom->magic = AX_EEPROM_MAGIC;
607
Christian Rieschceb02c92012-07-19 00:23:06 +0000608 first_word = eeprom->offset >> 1;
609 last_word = (eeprom->offset + eeprom->len - 1) >> 1;
610
611 eeprom_buff = kmalloc(sizeof(u16) * (last_word - first_word + 1),
612 GFP_KERNEL);
613 if (!eeprom_buff)
614 return -ENOMEM;
615
David Brownell2e55cc72005-08-31 09:53:10 -0700616 /* ax8817x returns 2 bytes from eeprom on read */
Christian Rieschceb02c92012-07-19 00:23:06 +0000617 for (i = first_word; i <= last_word; i++) {
618 if (asix_read_cmd(dev, AX_CMD_READ_EEPROM, i, 0, 2,
Robert Fossd9fe64e2016-08-29 09:32:15 -0400619 &eeprom_buff[i - first_word], 0) < 0) {
Christian Rieschceb02c92012-07-19 00:23:06 +0000620 kfree(eeprom_buff);
621 return -EIO;
622 }
David Brownell2e55cc72005-08-31 09:53:10 -0700623 }
Christian Rieschceb02c92012-07-19 00:23:06 +0000624
625 memcpy(data, (u8 *)eeprom_buff + (eeprom->offset & 1), eeprom->len);
626 kfree(eeprom_buff);
David Brownell2e55cc72005-08-31 09:53:10 -0700627 return 0;
628}
629
Christian Rieschcb7b24c2012-07-19 00:23:07 +0000630int asix_set_eeprom(struct net_device *net, struct ethtool_eeprom *eeprom,
631 u8 *data)
632{
633 struct usbnet *dev = netdev_priv(net);
634 u16 *eeprom_buff;
635 int first_word, last_word;
636 int i;
637 int ret;
638
639 netdev_dbg(net, "write EEPROM len %d, offset %d, magic 0x%x\n",
640 eeprom->len, eeprom->offset, eeprom->magic);
641
642 if (eeprom->len == 0)
643 return -EINVAL;
644
645 if (eeprom->magic != AX_EEPROM_MAGIC)
646 return -EINVAL;
647
648 first_word = eeprom->offset >> 1;
649 last_word = (eeprom->offset + eeprom->len - 1) >> 1;
650
651 eeprom_buff = kmalloc(sizeof(u16) * (last_word - first_word + 1),
652 GFP_KERNEL);
653 if (!eeprom_buff)
654 return -ENOMEM;
655
656 /* align data to 16 bit boundaries, read the missing data from
657 the EEPROM */
658 if (eeprom->offset & 1) {
659 ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, first_word, 0, 2,
Robert Fossd9fe64e2016-08-29 09:32:15 -0400660 &eeprom_buff[0], 0);
Christian Rieschcb7b24c2012-07-19 00:23:07 +0000661 if (ret < 0) {
662 netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", first_word);
663 goto free;
664 }
665 }
666
667 if ((eeprom->offset + eeprom->len) & 1) {
668 ret = asix_read_cmd(dev, AX_CMD_READ_EEPROM, last_word, 0, 2,
Robert Fossd9fe64e2016-08-29 09:32:15 -0400669 &eeprom_buff[last_word - first_word], 0);
Christian Rieschcb7b24c2012-07-19 00:23:07 +0000670 if (ret < 0) {
671 netdev_err(net, "Failed to read EEPROM at offset 0x%02x.\n", last_word);
672 goto free;
673 }
674 }
675
676 memcpy((u8 *)eeprom_buff + (eeprom->offset & 1), data, eeprom->len);
677
678 /* write data to EEPROM */
Robert Fossd9fe64e2016-08-29 09:32:15 -0400679 ret = asix_write_cmd(dev, AX_CMD_WRITE_ENABLE, 0x0000, 0, 0, NULL, 0);
Christian Rieschcb7b24c2012-07-19 00:23:07 +0000680 if (ret < 0) {
681 netdev_err(net, "Failed to enable EEPROM write\n");
682 goto free;
683 }
684 msleep(20);
685
686 for (i = first_word; i <= last_word; i++) {
687 netdev_dbg(net, "write to EEPROM at offset 0x%02x, data 0x%04x\n",
688 i, eeprom_buff[i - first_word]);
689 ret = asix_write_cmd(dev, AX_CMD_WRITE_EEPROM, i,
Robert Fossd9fe64e2016-08-29 09:32:15 -0400690 eeprom_buff[i - first_word], 0, NULL, 0);
Christian Rieschcb7b24c2012-07-19 00:23:07 +0000691 if (ret < 0) {
692 netdev_err(net, "Failed to write EEPROM at offset 0x%02x.\n",
693 i);
694 goto free;
695 }
696 msleep(20);
697 }
698
Robert Fossd9fe64e2016-08-29 09:32:15 -0400699 ret = asix_write_cmd(dev, AX_CMD_WRITE_DISABLE, 0x0000, 0, 0, NULL, 0);
Christian Rieschcb7b24c2012-07-19 00:23:07 +0000700 if (ret < 0) {
701 netdev_err(net, "Failed to disable EEPROM write\n");
702 goto free;
703 }
704
705 ret = 0;
706free:
707 kfree(eeprom_buff);
708 return ret;
709}
710
Christian Riesch607740b2012-07-13 05:26:30 +0000711void asix_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *info)
David Brownell2e55cc72005-08-31 09:53:10 -0700712{
713 /* Inherit standard device info */
714 usbnet_get_drvinfo(net, info);
Jiri Pirko7826d432013-01-06 00:44:26 +0000715 strlcpy(info->driver, DRIVER_NAME, sizeof(info->driver));
716 strlcpy(info->version, DRIVER_VERSION, sizeof(info->version));
David Brownell2e55cc72005-08-31 09:53:10 -0700717}
718
Christian Riesch607740b2012-07-13 05:26:30 +0000719int asix_set_mac_address(struct net_device *net, void *p)
Jussi Kivilinna7f29a3b2010-03-09 12:24:38 +0000720{
721 struct usbnet *dev = netdev_priv(net);
722 struct asix_data *data = (struct asix_data *)&dev->data;
723 struct sockaddr *addr = p;
724
725 if (netif_running(net))
726 return -EBUSY;
727 if (!is_valid_ether_addr(addr->sa_data))
728 return -EADDRNOTAVAIL;
729
730 memcpy(net->dev_addr, addr->sa_data, ETH_ALEN);
731
732 /* We use the 20 byte dev->data
733 * for our 6 byte mac buffer
734 * to avoid allocating memory that
735 * is tricky to free later */
736 memcpy(data->mac_addr, addr->sa_data, ETH_ALEN);
737 asix_write_cmd_async(dev, AX_CMD_WRITE_NODE_ID, 0, 0, ETH_ALEN,
738 data->mac_addr);
739
740 return 0;
741}