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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
1edb9ca6 SR |
2 | /* 10G controller driver for Samsung SoCs |
3 | * | |
4 | * Copyright (C) 2013 Samsung Electronics Co., Ltd. | |
5 | * http://www.samsung.com | |
6 | * | |
7 | * Author: Siva Reddy Kallam <siva.kallam@samsung.com> | |
1edb9ca6 SR |
8 | */ |
9 | ||
10 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
11 | ||
25f72a74 VP |
12 | #include <linux/clk.h> |
13 | #include <linux/interrupt.h> | |
1edb9ca6 SR |
14 | #include <linux/kernel.h> |
15 | #include <linux/netdevice.h> | |
25f72a74 | 16 | #include <linux/net_tstamp.h> |
1edb9ca6 | 17 | #include <linux/phy.h> |
25f72a74 | 18 | #include <linux/ptp_clock_kernel.h> |
1edb9ca6 SR |
19 | |
20 | #include "sxgbe_common.h" | |
25f72a74 VP |
21 | #include "sxgbe_reg.h" |
22 | #include "sxgbe_dma.h" | |
1edb9ca6 SR |
23 | |
24 | struct sxgbe_stats { | |
25 | char stat_string[ETH_GSTRING_LEN]; | |
26 | int sizeof_stat; | |
27 | int stat_offset; | |
28 | }; | |
29 | ||
30 | #define SXGBE_STAT(m) \ | |
31 | { \ | |
32 | #m, \ | |
c593642c | 33 | sizeof_field(struct sxgbe_extra_stats, m), \ |
1edb9ca6 SR |
34 | offsetof(struct sxgbe_priv_data, xstats.m) \ |
35 | } | |
36 | ||
37 | static const struct sxgbe_stats sxgbe_gstrings_stats[] = { | |
25f72a74 VP |
38 | /* TX/RX IRQ events */ |
39 | SXGBE_STAT(tx_process_stopped_irq), | |
40 | SXGBE_STAT(tx_ctxt_desc_err), | |
41 | SXGBE_STAT(tx_threshold), | |
42 | SXGBE_STAT(rx_threshold), | |
43 | SXGBE_STAT(tx_pkt_n), | |
44 | SXGBE_STAT(rx_pkt_n), | |
45 | SXGBE_STAT(normal_irq_n), | |
46 | SXGBE_STAT(tx_normal_irq_n), | |
47 | SXGBE_STAT(rx_normal_irq_n), | |
48 | SXGBE_STAT(napi_poll), | |
49 | SXGBE_STAT(tx_clean), | |
50 | SXGBE_STAT(tx_reset_ic_bit), | |
51 | SXGBE_STAT(rx_process_stopped_irq), | |
52 | SXGBE_STAT(rx_underflow_irq), | |
53 | ||
54 | /* Bus access errors */ | |
55 | SXGBE_STAT(fatal_bus_error_irq), | |
56 | SXGBE_STAT(tx_read_transfer_err), | |
57 | SXGBE_STAT(tx_write_transfer_err), | |
58 | SXGBE_STAT(tx_desc_access_err), | |
59 | SXGBE_STAT(tx_buffer_access_err), | |
60 | SXGBE_STAT(tx_data_transfer_err), | |
61 | SXGBE_STAT(rx_read_transfer_err), | |
62 | SXGBE_STAT(rx_write_transfer_err), | |
63 | SXGBE_STAT(rx_desc_access_err), | |
64 | SXGBE_STAT(rx_buffer_access_err), | |
65 | SXGBE_STAT(rx_data_transfer_err), | |
66 | ||
67 | /* EEE-LPI stats */ | |
acc18c14 G |
68 | SXGBE_STAT(tx_lpi_entry_n), |
69 | SXGBE_STAT(tx_lpi_exit_n), | |
70 | SXGBE_STAT(rx_lpi_entry_n), | |
71 | SXGBE_STAT(rx_lpi_exit_n), | |
72 | SXGBE_STAT(eee_wakeup_error_n), | |
25f72a74 VP |
73 | |
74 | /* RX specific */ | |
75 | /* L2 error */ | |
76 | SXGBE_STAT(rx_code_gmii_err), | |
77 | SXGBE_STAT(rx_watchdog_err), | |
78 | SXGBE_STAT(rx_crc_err), | |
79 | SXGBE_STAT(rx_gaint_pkt_err), | |
80 | SXGBE_STAT(ip_hdr_err), | |
81 | SXGBE_STAT(ip_payload_err), | |
82 | SXGBE_STAT(overflow_error), | |
83 | ||
84 | /* L2 Pkt type */ | |
85 | SXGBE_STAT(len_pkt), | |
86 | SXGBE_STAT(mac_ctl_pkt), | |
87 | SXGBE_STAT(dcb_ctl_pkt), | |
88 | SXGBE_STAT(arp_pkt), | |
89 | SXGBE_STAT(oam_pkt), | |
90 | SXGBE_STAT(untag_okt), | |
91 | SXGBE_STAT(other_pkt), | |
92 | SXGBE_STAT(svlan_tag_pkt), | |
93 | SXGBE_STAT(cvlan_tag_pkt), | |
94 | SXGBE_STAT(dvlan_ocvlan_icvlan_pkt), | |
95 | SXGBE_STAT(dvlan_osvlan_isvlan_pkt), | |
96 | SXGBE_STAT(dvlan_osvlan_icvlan_pkt), | |
97 | SXGBE_STAT(dvan_ocvlan_icvlan_pkt), | |
98 | ||
99 | /* L3/L4 Pkt type */ | |
100 | SXGBE_STAT(not_ip_pkt), | |
101 | SXGBE_STAT(ip4_tcp_pkt), | |
102 | SXGBE_STAT(ip4_udp_pkt), | |
103 | SXGBE_STAT(ip4_icmp_pkt), | |
104 | SXGBE_STAT(ip4_unknown_pkt), | |
105 | SXGBE_STAT(ip6_tcp_pkt), | |
106 | SXGBE_STAT(ip6_udp_pkt), | |
107 | SXGBE_STAT(ip6_icmp_pkt), | |
108 | SXGBE_STAT(ip6_unknown_pkt), | |
109 | ||
110 | /* Filter specific */ | |
111 | SXGBE_STAT(vlan_filter_match), | |
112 | SXGBE_STAT(sa_filter_fail), | |
113 | SXGBE_STAT(da_filter_fail), | |
114 | SXGBE_STAT(hash_filter_pass), | |
115 | SXGBE_STAT(l3_filter_match), | |
116 | SXGBE_STAT(l4_filter_match), | |
117 | ||
118 | /* RX context specific */ | |
119 | SXGBE_STAT(timestamp_dropped), | |
120 | SXGBE_STAT(rx_msg_type_no_ptp), | |
121 | SXGBE_STAT(rx_ptp_type_sync), | |
122 | SXGBE_STAT(rx_ptp_type_follow_up), | |
123 | SXGBE_STAT(rx_ptp_type_delay_req), | |
124 | SXGBE_STAT(rx_ptp_type_delay_resp), | |
125 | SXGBE_STAT(rx_ptp_type_pdelay_req), | |
126 | SXGBE_STAT(rx_ptp_type_pdelay_resp), | |
127 | SXGBE_STAT(rx_ptp_type_pdelay_follow_up), | |
128 | SXGBE_STAT(rx_ptp_announce), | |
129 | SXGBE_STAT(rx_ptp_mgmt), | |
130 | SXGBE_STAT(rx_ptp_signal), | |
131 | SXGBE_STAT(rx_ptp_resv_msg_type), | |
1edb9ca6 SR |
132 | }; |
133 | #define SXGBE_STATS_LEN ARRAY_SIZE(sxgbe_gstrings_stats) | |
134 | ||
acc18c14 G |
135 | static int sxgbe_get_eee(struct net_device *dev, |
136 | struct ethtool_eee *edata) | |
137 | { | |
138 | struct sxgbe_priv_data *priv = netdev_priv(dev); | |
139 | ||
140 | if (!priv->hw_cap.eee) | |
141 | return -EOPNOTSUPP; | |
142 | ||
143 | edata->eee_enabled = priv->eee_enabled; | |
144 | edata->eee_active = priv->eee_active; | |
145 | edata->tx_lpi_timer = priv->tx_lpi_timer; | |
146 | ||
2ebc440a | 147 | return phy_ethtool_get_eee(dev->phydev, edata); |
acc18c14 G |
148 | } |
149 | ||
150 | static int sxgbe_set_eee(struct net_device *dev, | |
151 | struct ethtool_eee *edata) | |
152 | { | |
153 | struct sxgbe_priv_data *priv = netdev_priv(dev); | |
154 | ||
155 | priv->eee_enabled = edata->eee_enabled; | |
156 | ||
157 | if (!priv->eee_enabled) { | |
158 | sxgbe_disable_eee_mode(priv); | |
159 | } else { | |
160 | /* We are asking for enabling the EEE but it is safe | |
161 | * to verify all by invoking the eee_init function. | |
162 | * In case of failure it will return an error. | |
163 | */ | |
164 | priv->eee_enabled = sxgbe_eee_init(priv); | |
165 | if (!priv->eee_enabled) | |
166 | return -EOPNOTSUPP; | |
167 | ||
168 | /* Do not change tx_lpi_timer in case of failure */ | |
169 | priv->tx_lpi_timer = edata->tx_lpi_timer; | |
170 | } | |
171 | ||
2ebc440a | 172 | return phy_ethtool_set_eee(dev->phydev, edata); |
acc18c14 G |
173 | } |
174 | ||
25f72a74 VP |
175 | static void sxgbe_getdrvinfo(struct net_device *dev, |
176 | struct ethtool_drvinfo *info) | |
177 | { | |
178 | strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver)); | |
179 | strlcpy(info->version, DRV_VERSION, sizeof(info->version)); | |
180 | } | |
181 | ||
25f72a74 VP |
182 | static u32 sxgbe_getmsglevel(struct net_device *dev) |
183 | { | |
184 | struct sxgbe_priv_data *priv = netdev_priv(dev); | |
185 | return priv->msg_enable; | |
186 | } | |
187 | ||
188 | static void sxgbe_setmsglevel(struct net_device *dev, u32 level) | |
189 | { | |
190 | struct sxgbe_priv_data *priv = netdev_priv(dev); | |
191 | priv->msg_enable = level; | |
192 | } | |
193 | ||
194 | static void sxgbe_get_strings(struct net_device *dev, u32 stringset, u8 *data) | |
195 | { | |
196 | int i; | |
197 | u8 *p = data; | |
198 | ||
199 | switch (stringset) { | |
200 | case ETH_SS_STATS: | |
201 | for (i = 0; i < SXGBE_STATS_LEN; i++) { | |
202 | memcpy(p, sxgbe_gstrings_stats[i].stat_string, | |
203 | ETH_GSTRING_LEN); | |
204 | p += ETH_GSTRING_LEN; | |
205 | } | |
206 | break; | |
207 | default: | |
208 | WARN_ON(1); | |
209 | break; | |
210 | } | |
211 | } | |
212 | ||
213 | static int sxgbe_get_sset_count(struct net_device *netdev, int sset) | |
214 | { | |
215 | int len; | |
216 | ||
217 | switch (sset) { | |
218 | case ETH_SS_STATS: | |
219 | len = SXGBE_STATS_LEN; | |
220 | return len; | |
221 | default: | |
222 | return -EINVAL; | |
223 | } | |
224 | } | |
225 | ||
226 | static void sxgbe_get_ethtool_stats(struct net_device *dev, | |
227 | struct ethtool_stats *dummy, u64 *data) | |
228 | { | |
229 | struct sxgbe_priv_data *priv = netdev_priv(dev); | |
230 | int i; | |
231 | char *p; | |
232 | ||
233 | if (priv->eee_enabled) { | |
2ebc440a | 234 | int val = phy_get_eee_err(dev->phydev); |
25f72a74 VP |
235 | |
236 | if (val) | |
237 | priv->xstats.eee_wakeup_error_n = val; | |
238 | } | |
239 | ||
240 | for (i = 0; i < SXGBE_STATS_LEN; i++) { | |
241 | p = (char *)priv + sxgbe_gstrings_stats[i].stat_offset; | |
242 | data[i] = (sxgbe_gstrings_stats[i].sizeof_stat == sizeof(u64)) | |
243 | ? (*(u64 *)p) : (*(u32 *)p); | |
244 | } | |
245 | } | |
246 | ||
247 | static void sxgbe_get_channels(struct net_device *dev, | |
248 | struct ethtool_channels *channel) | |
249 | { | |
250 | channel->max_rx = SXGBE_MAX_RX_CHANNELS; | |
251 | channel->max_tx = SXGBE_MAX_TX_CHANNELS; | |
252 | channel->rx_count = SXGBE_RX_QUEUES; | |
253 | channel->tx_count = SXGBE_TX_QUEUES; | |
254 | } | |
255 | ||
256 | static u32 sxgbe_riwt2usec(u32 riwt, struct sxgbe_priv_data *priv) | |
257 | { | |
258 | unsigned long clk = clk_get_rate(priv->sxgbe_clk); | |
259 | ||
260 | if (!clk) | |
261 | return 0; | |
262 | ||
263 | return (riwt * 256) / (clk / 1000000); | |
264 | } | |
265 | ||
266 | static u32 sxgbe_usec2riwt(u32 usec, struct sxgbe_priv_data *priv) | |
267 | { | |
268 | unsigned long clk = clk_get_rate(priv->sxgbe_clk); | |
269 | ||
270 | if (!clk) | |
271 | return 0; | |
272 | ||
273 | return (usec * (clk / 1000000)) / 256; | |
274 | } | |
275 | ||
276 | static int sxgbe_get_coalesce(struct net_device *dev, | |
277 | struct ethtool_coalesce *ec) | |
278 | { | |
279 | struct sxgbe_priv_data *priv = netdev_priv(dev); | |
280 | ||
281 | if (priv->use_riwt) | |
282 | ec->rx_coalesce_usecs = sxgbe_riwt2usec(priv->rx_riwt, priv); | |
283 | ||
284 | return 0; | |
285 | } | |
286 | ||
287 | static int sxgbe_set_coalesce(struct net_device *dev, | |
288 | struct ethtool_coalesce *ec) | |
289 | { | |
290 | struct sxgbe_priv_data *priv = netdev_priv(dev); | |
291 | unsigned int rx_riwt; | |
292 | ||
293 | if (!ec->rx_coalesce_usecs) | |
294 | return -EINVAL; | |
295 | ||
296 | rx_riwt = sxgbe_usec2riwt(ec->rx_coalesce_usecs, priv); | |
297 | ||
298 | if ((rx_riwt > SXGBE_MAX_DMA_RIWT) || (rx_riwt < SXGBE_MIN_DMA_RIWT)) | |
299 | return -EINVAL; | |
300 | else if (!priv->use_riwt) | |
301 | return -EOPNOTSUPP; | |
302 | ||
303 | priv->rx_riwt = rx_riwt; | |
304 | priv->hw->dma->rx_watchdog(priv->ioaddr, priv->rx_riwt); | |
305 | ||
306 | return 0; | |
307 | } | |
308 | ||
309 | static int sxgbe_get_rss_hash_opts(struct sxgbe_priv_data *priv, | |
310 | struct ethtool_rxnfc *cmd) | |
311 | { | |
312 | cmd->data = 0; | |
313 | ||
314 | /* Report default options for RSS on sxgbe */ | |
315 | switch (cmd->flow_type) { | |
316 | case TCP_V4_FLOW: | |
317 | case UDP_V4_FLOW: | |
318 | cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3; | |
4e50ffcf | 319 | /* Fall through */ |
25f72a74 VP |
320 | case SCTP_V4_FLOW: |
321 | case AH_ESP_V4_FLOW: | |
322 | case AH_V4_FLOW: | |
323 | case ESP_V4_FLOW: | |
324 | case IPV4_FLOW: | |
325 | cmd->data |= RXH_IP_SRC | RXH_IP_DST; | |
326 | break; | |
327 | case TCP_V6_FLOW: | |
328 | case UDP_V6_FLOW: | |
329 | cmd->data |= RXH_L4_B_0_1 | RXH_L4_B_2_3; | |
4e50ffcf | 330 | /* Fall through */ |
25f72a74 VP |
331 | case SCTP_V6_FLOW: |
332 | case AH_ESP_V6_FLOW: | |
333 | case AH_V6_FLOW: | |
334 | case ESP_V6_FLOW: | |
335 | case IPV6_FLOW: | |
336 | cmd->data |= RXH_IP_SRC | RXH_IP_DST; | |
337 | break; | |
338 | default: | |
339 | return -EINVAL; | |
340 | } | |
341 | ||
342 | return 0; | |
343 | } | |
344 | ||
345 | static int sxgbe_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd, | |
346 | u32 *rule_locs) | |
347 | { | |
348 | struct sxgbe_priv_data *priv = netdev_priv(dev); | |
349 | int ret = -EOPNOTSUPP; | |
350 | ||
351 | switch (cmd->cmd) { | |
352 | case ETHTOOL_GRXFH: | |
353 | ret = sxgbe_get_rss_hash_opts(priv, cmd); | |
354 | break; | |
355 | default: | |
356 | break; | |
357 | } | |
358 | ||
359 | return ret; | |
360 | } | |
361 | ||
362 | static int sxgbe_set_rss_hash_opt(struct sxgbe_priv_data *priv, | |
363 | struct ethtool_rxnfc *cmd) | |
364 | { | |
365 | u32 reg_val = 0; | |
366 | ||
367 | /* RSS does not support anything other than hashing | |
368 | * to queues on src and dst IPs and ports | |
369 | */ | |
370 | if (cmd->data & ~(RXH_IP_SRC | RXH_IP_DST | | |
371 | RXH_L4_B_0_1 | RXH_L4_B_2_3)) | |
372 | return -EINVAL; | |
373 | ||
374 | switch (cmd->flow_type) { | |
375 | case TCP_V4_FLOW: | |
376 | case TCP_V6_FLOW: | |
377 | if (!(cmd->data & RXH_IP_SRC) || | |
378 | !(cmd->data & RXH_IP_DST) || | |
379 | !(cmd->data & RXH_L4_B_0_1) || | |
380 | !(cmd->data & RXH_L4_B_2_3)) | |
381 | return -EINVAL; | |
382 | reg_val = SXGBE_CORE_RSS_CTL_TCP4TE; | |
383 | break; | |
384 | case UDP_V4_FLOW: | |
385 | case UDP_V6_FLOW: | |
386 | if (!(cmd->data & RXH_IP_SRC) || | |
387 | !(cmd->data & RXH_IP_DST) || | |
388 | !(cmd->data & RXH_L4_B_0_1) || | |
389 | !(cmd->data & RXH_L4_B_2_3)) | |
390 | return -EINVAL; | |
391 | reg_val = SXGBE_CORE_RSS_CTL_UDP4TE; | |
392 | break; | |
393 | case SCTP_V4_FLOW: | |
394 | case AH_ESP_V4_FLOW: | |
395 | case AH_V4_FLOW: | |
396 | case ESP_V4_FLOW: | |
397 | case AH_ESP_V6_FLOW: | |
398 | case AH_V6_FLOW: | |
399 | case ESP_V6_FLOW: | |
400 | case SCTP_V6_FLOW: | |
401 | case IPV4_FLOW: | |
402 | case IPV6_FLOW: | |
403 | if (!(cmd->data & RXH_IP_SRC) || | |
404 | !(cmd->data & RXH_IP_DST) || | |
405 | (cmd->data & RXH_L4_B_0_1) || | |
406 | (cmd->data & RXH_L4_B_2_3)) | |
407 | return -EINVAL; | |
408 | reg_val = SXGBE_CORE_RSS_CTL_IP2TE; | |
409 | break; | |
410 | default: | |
411 | return -EINVAL; | |
412 | } | |
413 | ||
414 | /* Read SXGBE RSS control register and update */ | |
415 | reg_val |= readl(priv->ioaddr + SXGBE_CORE_RSS_CTL_REG); | |
416 | writel(reg_val, priv->ioaddr + SXGBE_CORE_RSS_CTL_REG); | |
417 | readl(priv->ioaddr + SXGBE_CORE_RSS_CTL_REG); | |
418 | ||
419 | return 0; | |
420 | } | |
421 | ||
422 | static int sxgbe_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd) | |
423 | { | |
424 | struct sxgbe_priv_data *priv = netdev_priv(dev); | |
425 | int ret = -EOPNOTSUPP; | |
426 | ||
427 | switch (cmd->cmd) { | |
428 | case ETHTOOL_SRXFH: | |
429 | ret = sxgbe_set_rss_hash_opt(priv, cmd); | |
430 | break; | |
431 | default: | |
432 | break; | |
433 | } | |
434 | ||
435 | return ret; | |
436 | } | |
437 | ||
438 | static void sxgbe_get_regs(struct net_device *dev, | |
439 | struct ethtool_regs *regs, void *space) | |
440 | { | |
441 | struct sxgbe_priv_data *priv = netdev_priv(dev); | |
442 | u32 *reg_space = (u32 *)space; | |
443 | int reg_offset; | |
444 | int reg_ix = 0; | |
445 | void __iomem *ioaddr = priv->ioaddr; | |
446 | ||
447 | memset(reg_space, 0x0, REG_SPACE_SIZE); | |
448 | ||
449 | /* MAC registers */ | |
450 | for (reg_offset = START_MAC_REG_OFFSET; | |
451 | reg_offset <= MAX_MAC_REG_OFFSET; reg_offset += 4) { | |
452 | reg_space[reg_ix] = readl(ioaddr + reg_offset); | |
453 | reg_ix++; | |
454 | } | |
455 | ||
456 | /* MTL registers */ | |
457 | for (reg_offset = START_MTL_REG_OFFSET; | |
458 | reg_offset <= MAX_MTL_REG_OFFSET; reg_offset += 4) { | |
459 | reg_space[reg_ix] = readl(ioaddr + reg_offset); | |
460 | reg_ix++; | |
461 | } | |
462 | ||
463 | /* DMA registers */ | |
464 | for (reg_offset = START_DMA_REG_OFFSET; | |
465 | reg_offset <= MAX_DMA_REG_OFFSET; reg_offset += 4) { | |
466 | reg_space[reg_ix] = readl(ioaddr + reg_offset); | |
467 | reg_ix++; | |
468 | } | |
469 | ||
470 | BUG_ON(reg_ix * 4 > REG_SPACE_SIZE); | |
471 | } | |
472 | ||
473 | static int sxgbe_get_regs_len(struct net_device *dev) | |
474 | { | |
475 | return REG_SPACE_SIZE; | |
476 | } | |
477 | ||
1edb9ca6 | 478 | static const struct ethtool_ops sxgbe_ethtool_ops = { |
25f72a74 | 479 | .get_drvinfo = sxgbe_getdrvinfo, |
25f72a74 VP |
480 | .get_msglevel = sxgbe_getmsglevel, |
481 | .set_msglevel = sxgbe_setmsglevel, | |
482 | .get_link = ethtool_op_get_link, | |
483 | .get_strings = sxgbe_get_strings, | |
484 | .get_ethtool_stats = sxgbe_get_ethtool_stats, | |
485 | .get_sset_count = sxgbe_get_sset_count, | |
486 | .get_channels = sxgbe_get_channels, | |
487 | .get_coalesce = sxgbe_get_coalesce, | |
488 | .set_coalesce = sxgbe_set_coalesce, | |
489 | .get_rxnfc = sxgbe_get_rxnfc, | |
490 | .set_rxnfc = sxgbe_set_rxnfc, | |
491 | .get_regs = sxgbe_get_regs, | |
492 | .get_regs_len = sxgbe_get_regs_len, | |
acc18c14 G |
493 | .get_eee = sxgbe_get_eee, |
494 | .set_eee = sxgbe_set_eee, | |
13e4c230 PR |
495 | .get_link_ksettings = phy_ethtool_get_link_ksettings, |
496 | .set_link_ksettings = phy_ethtool_set_link_ksettings, | |
1edb9ca6 SR |
497 | }; |
498 | ||
499 | void sxgbe_set_ethtool_ops(struct net_device *netdev) | |
500 | { | |
7ad24ea4 | 501 | netdev->ethtool_ops = &sxgbe_ethtool_ops; |
1edb9ca6 | 502 | } |