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Merge tag 'mfd-fixes-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
[linux-2.6-block.git] / drivers / net / ethernet / sfc / mcdi_port.c
CommitLineData
afd4aea0 1/****************************************************************************
f7a6d2c4
BH		 2 * Driver for Solarflare network controllers and boards
3 * Copyright 2009-2013 Solarflare Communications Inc.
afd4aea0
BH		 4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published
7 * by the Free Software Foundation, incorporated herein by reference.
8 */
9
10/*
11 * Driver for PHY related operations via MCDI.
12 */
13
5a0e3ad6 14#include <linux/slab.h>
afd4aea0
BH		 15#include "efx.h"
16#include "phy.h"
17#include "mcdi.h"
18#include "mcdi_pcol.h"
affaf485
SH		 19#include "nic.h"
20#include "selftest.h"
afd4aea0 21
3bd93035 22struct efx_mcdi_phy_data {
afd4aea0
BH		 23 u32 flags;
24 u32 type;
25 u32 supported_cap;
26 u32 channel;
27 u32 port;
28 u32 stats_mask;
29 u8 name[20];
30 u32 media;
31 u32 mmd_mask;
32 u8 revision[20];
33 u32 forced_cap;
34};
35
36static int
3bd93035 37efx_mcdi_get_phy_cfg(struct efx_nic *efx, struct efx_mcdi_phy_data *cfg)
afd4aea0 38{
59cfc479 39 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_CFG_OUT_LEN);
afd4aea0
BH		 40 size_t outlen;
41 int rc;
42
43 BUILD_BUG_ON(MC_CMD_GET_PHY_CFG_IN_LEN != 0);
44 BUILD_BUG_ON(MC_CMD_GET_PHY_CFG_OUT_NAME_LEN != sizeof(cfg->name));
45
46 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_CFG, NULL, 0,
47 outbuf, sizeof(outbuf), &outlen);
48 if (rc)
49 goto fail;
50
51 if (outlen < MC_CMD_GET_PHY_CFG_OUT_LEN) {
00bbb4a5 52 rc = -EIO;
afd4aea0
BH		 53 goto fail;
54 }
55
56 cfg->flags = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_FLAGS);
57 cfg->type = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_TYPE);
58 cfg->supported_cap =
59 MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_SUPPORTED_CAP);
60 cfg->channel = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_CHANNEL);
61 cfg->port = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_PRT);
62 cfg->stats_mask = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_STATS_MASK);
63 memcpy(cfg->name, MCDI_PTR(outbuf, GET_PHY_CFG_OUT_NAME),
64 sizeof(cfg->name));
65 cfg->media = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_MEDIA_TYPE);
66 cfg->mmd_mask = MCDI_DWORD(outbuf, GET_PHY_CFG_OUT_MMD_MASK);
67 memcpy(cfg->revision, MCDI_PTR(outbuf, GET_PHY_CFG_OUT_REVISION),
68 sizeof(cfg->revision));
69
70 return 0;
71
72fail:
62776d03 73 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
afd4aea0
BH		 74 return rc;
75}
76
77static int efx_mcdi_set_link(struct efx_nic *efx, u32 capabilities,
78 u32 flags, u32 loopback_mode,
79 u32 loopback_speed)
80{
59cfc479 81 MCDI_DECLARE_BUF(inbuf, MC_CMD_SET_LINK_IN_LEN);
afd4aea0
BH		 82 int rc;
83
84 BUILD_BUG_ON(MC_CMD_SET_LINK_OUT_LEN != 0);
85
86 MCDI_SET_DWORD(inbuf, SET_LINK_IN_CAP, capabilities);
87 MCDI_SET_DWORD(inbuf, SET_LINK_IN_FLAGS, flags);
88 MCDI_SET_DWORD(inbuf, SET_LINK_IN_LOOPBACK_MODE, loopback_mode);
89 MCDI_SET_DWORD(inbuf, SET_LINK_IN_LOOPBACK_SPEED, loopback_speed);
90
91 rc = efx_mcdi_rpc(efx, MC_CMD_SET_LINK, inbuf, sizeof(inbuf),
92 NULL, 0, NULL);
afd4aea0
BH		 93 return rc;
94}
95
96static int efx_mcdi_loopback_modes(struct efx_nic *efx, u64 *loopback_modes)
97{
59cfc479 98 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LOOPBACK_MODES_OUT_LEN);
afd4aea0
BH		 99 size_t outlen;
100 int rc;
101
102 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LOOPBACK_MODES, NULL, 0,
103 outbuf, sizeof(outbuf), &outlen);
104 if (rc)
105 goto fail;
106
f2b0befd
BH		 107 if (outlen < (MC_CMD_GET_LOOPBACK_MODES_OUT_SUGGESTED_OFST +
108 MC_CMD_GET_LOOPBACK_MODES_OUT_SUGGESTED_LEN)) {
00bbb4a5 109 rc = -EIO;
afd4aea0
BH		 110 goto fail;
111 }
112
05a9320f 113 *loopback_modes = MCDI_QWORD(outbuf, GET_LOOPBACK_MODES_OUT_SUGGESTED);
afd4aea0
BH		 114
115 return 0;
116
117fail:
62776d03 118 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
afd4aea0
BH		 119 return rc;
120}
121
43f775b2
BH		 122static int efx_mcdi_mdio_read(struct net_device *net_dev,
123 int prtad, int devad, u16 addr)
afd4aea0 124{
43f775b2 125 struct efx_nic *efx = netdev_priv(net_dev);
59cfc479
BH		 126 MCDI_DECLARE_BUF(inbuf, MC_CMD_MDIO_READ_IN_LEN);
127 MCDI_DECLARE_BUF(outbuf, MC_CMD_MDIO_READ_OUT_LEN);
afd4aea0
BH		 128 size_t outlen;
129 int rc;
130
43f775b2 131 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_BUS, efx->mdio_bus);
afd4aea0
BH		 132 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_PRTAD, prtad);
133 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_DEVAD, devad);
134 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_ADDR, addr);
135
136 rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_READ, inbuf, sizeof(inbuf),
137 outbuf, sizeof(outbuf), &outlen);
138 if (rc)
1e0b8120 139 return rc;
afd4aea0 140
43f775b2
BH		 141 if (MCDI_DWORD(outbuf, MDIO_READ_OUT_STATUS) !=
142 MC_CMD_MDIO_STATUS_GOOD)
143 return -EIO;
144
145 return (u16)MCDI_DWORD(outbuf, MDIO_READ_OUT_VALUE);
afd4aea0
BH		 146}
147
43f775b2
BH		 148static int efx_mcdi_mdio_write(struct net_device *net_dev,
149 int prtad, int devad, u16 addr, u16 value)
afd4aea0 150{
43f775b2 151 struct efx_nic *efx = netdev_priv(net_dev);
59cfc479
BH		 152 MCDI_DECLARE_BUF(inbuf, MC_CMD_MDIO_WRITE_IN_LEN);
153 MCDI_DECLARE_BUF(outbuf, MC_CMD_MDIO_WRITE_OUT_LEN);
afd4aea0
BH		 154 size_t outlen;
155 int rc;
156
43f775b2 157 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_BUS, efx->mdio_bus);
afd4aea0
BH		 158 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_PRTAD, prtad);
159 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_DEVAD, devad);
160 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_ADDR, addr);
161 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_VALUE, value);
162
163 rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_WRITE, inbuf, sizeof(inbuf),
164 outbuf, sizeof(outbuf), &outlen);
165 if (rc)
1e0b8120 166 return rc;
afd4aea0 167
43f775b2
BH		 168 if (MCDI_DWORD(outbuf, MDIO_WRITE_OUT_STATUS) !=
169 MC_CMD_MDIO_STATUS_GOOD)
170 return -EIO;
171
afd4aea0 172 return 0;
afd4aea0
BH		 173}
174
175static u32 mcdi_to_ethtool_cap(u32 media, u32 cap)
176{
177 u32 result = 0;
178
179 switch (media) {
180 case MC_CMD_MEDIA_KX4:
181 result |= SUPPORTED_Backplane;
182 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN))
183 result |= SUPPORTED_1000baseKX_Full;
184 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN))
185 result |= SUPPORTED_10000baseKX4_Full;
ac331e94
EC		 186 if (cap & (1 << MC_CMD_PHY_CAP_40000FDX_LBN))
187 result |= SUPPORTED_40000baseKR4_Full;
afd4aea0
BH		 188 break;
189
190 case MC_CMD_MEDIA_XFP:
191 case MC_CMD_MEDIA_SFP_PLUS:
ac331e94
EC		 192 case MC_CMD_MEDIA_QSFP_PLUS:
193 result |= SUPPORTED_FIBRE;
3497ed8c
BK		 194 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN))
195 result |= SUPPORTED_1000baseT_Full;
196 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN))
197 result |= SUPPORTED_10000baseT_Full;
ac331e94
EC		 198 if (cap & (1 << MC_CMD_PHY_CAP_40000FDX_LBN))
199 result |= SUPPORTED_40000baseCR4_Full;
200 break;
201
afd4aea0
BH		 202 case MC_CMD_MEDIA_BASE_T:
203 result |= SUPPORTED_TP;
204 if (cap & (1 << MC_CMD_PHY_CAP_10HDX_LBN))
205 result |= SUPPORTED_10baseT_Half;
206 if (cap & (1 << MC_CMD_PHY_CAP_10FDX_LBN))
207 result |= SUPPORTED_10baseT_Full;
208 if (cap & (1 << MC_CMD_PHY_CAP_100HDX_LBN))
209 result |= SUPPORTED_100baseT_Half;
210 if (cap & (1 << MC_CMD_PHY_CAP_100FDX_LBN))
211 result |= SUPPORTED_100baseT_Full;
212 if (cap & (1 << MC_CMD_PHY_CAP_1000HDX_LBN))
213 result |= SUPPORTED_1000baseT_Half;
214 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN))
215 result |= SUPPORTED_1000baseT_Full;
216 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN))
217 result |= SUPPORTED_10000baseT_Full;
218 break;
219 }
220
221 if (cap & (1 << MC_CMD_PHY_CAP_PAUSE_LBN))
222 result |= SUPPORTED_Pause;
223 if (cap & (1 << MC_CMD_PHY_CAP_ASYM_LBN))
224 result |= SUPPORTED_Asym_Pause;
225 if (cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
226 result |= SUPPORTED_Autoneg;
227
228 return result;
229}
230
231static u32 ethtool_to_mcdi_cap(u32 cap)
232{
233 u32 result = 0;
234
235 if (cap & SUPPORTED_10baseT_Half)
236 result |= (1 << MC_CMD_PHY_CAP_10HDX_LBN);
237 if (cap & SUPPORTED_10baseT_Full)
238 result |= (1 << MC_CMD_PHY_CAP_10FDX_LBN);
239 if (cap & SUPPORTED_100baseT_Half)
240 result |= (1 << MC_CMD_PHY_CAP_100HDX_LBN);
241 if (cap & SUPPORTED_100baseT_Full)
242 result |= (1 << MC_CMD_PHY_CAP_100FDX_LBN);
243 if (cap & SUPPORTED_1000baseT_Half)
244 result |= (1 << MC_CMD_PHY_CAP_1000HDX_LBN);
245 if (cap & (SUPPORTED_1000baseT_Full | SUPPORTED_1000baseKX_Full))
246 result |= (1 << MC_CMD_PHY_CAP_1000FDX_LBN);
247 if (cap & (SUPPORTED_10000baseT_Full | SUPPORTED_10000baseKX4_Full))
248 result |= (1 << MC_CMD_PHY_CAP_10000FDX_LBN);
ac331e94
EC		 249 if (cap & (SUPPORTED_40000baseCR4_Full | SUPPORTED_40000baseKR4_Full))
250 result |= (1 << MC_CMD_PHY_CAP_40000FDX_LBN);
afd4aea0
BH		 251 if (cap & SUPPORTED_Pause)
252 result |= (1 << MC_CMD_PHY_CAP_PAUSE_LBN);
253 if (cap & SUPPORTED_Asym_Pause)
254 result |= (1 << MC_CMD_PHY_CAP_ASYM_LBN);
255 if (cap & SUPPORTED_Autoneg)
256 result |= (1 << MC_CMD_PHY_CAP_AN_LBN);
257
258 return result;
259}
260
261static u32 efx_get_mcdi_phy_flags(struct efx_nic *efx)
262{
3bd93035 263 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
afd4aea0
BH		 264 enum efx_phy_mode mode, supported;
265 u32 flags;
266
267 /* TODO: Advertise the capabilities supported by this PHY */
268 supported = 0;
05a9320f 269 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_TXDIS_LBN))
afd4aea0 270 supported |= PHY_MODE_TX_DISABLED;
05a9320f 271 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_LOWPOWER_LBN))
afd4aea0 272 supported |= PHY_MODE_LOW_POWER;
05a9320f 273 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_POWEROFF_LBN))
afd4aea0
BH		 274 supported |= PHY_MODE_OFF;
275
276 mode = efx->phy_mode & supported;
277
278 flags = 0;
279 if (mode & PHY_MODE_TX_DISABLED)
05a9320f 280 flags |= (1 << MC_CMD_SET_LINK_IN_TXDIS_LBN);
afd4aea0 281 if (mode & PHY_MODE_LOW_POWER)
05a9320f 282 flags |= (1 << MC_CMD_SET_LINK_IN_LOWPOWER_LBN);
afd4aea0 283 if (mode & PHY_MODE_OFF)
05a9320f 284 flags |= (1 << MC_CMD_SET_LINK_IN_POWEROFF_LBN);
afd4aea0
BH		 285
286 return flags;
287}
288
289static u32 mcdi_to_ethtool_media(u32 media)
290{
291 switch (media) {
292 case MC_CMD_MEDIA_XAUI:
293 case MC_CMD_MEDIA_CX4:
294 case MC_CMD_MEDIA_KX4:
295 return PORT_OTHER;
296
297 case MC_CMD_MEDIA_XFP:
298 case MC_CMD_MEDIA_SFP_PLUS:
ac331e94 299 case MC_CMD_MEDIA_QSFP_PLUS:
afd4aea0
BH		 300 return PORT_FIBRE;
301
302 case MC_CMD_MEDIA_BASE_T:
303 return PORT_TP;
304
305 default:
306 return PORT_OTHER;
307 }
308}
309
43f775b2
BH		 310static void efx_mcdi_phy_decode_link(struct efx_nic *efx,
311 struct efx_link_state *link_state,
312 u32 speed, u32 flags, u32 fcntl)
313{
314 switch (fcntl) {
315 case MC_CMD_FCNTL_AUTO:
316 WARN_ON(1); /* This is not a link mode */
317 link_state->fc = EFX_FC_AUTO | EFX_FC_TX | EFX_FC_RX;
318 break;
319 case MC_CMD_FCNTL_BIDIR:
320 link_state->fc = EFX_FC_TX | EFX_FC_RX;
321 break;
322 case MC_CMD_FCNTL_RESPOND:
323 link_state->fc = EFX_FC_RX;
324 break;
325 default:
326 WARN_ON(1);
327 case MC_CMD_FCNTL_OFF:
328 link_state->fc = 0;
329 break;
330 }
331
332 link_state->up = !!(flags & (1 << MC_CMD_GET_LINK_OUT_LINK_UP_LBN));
333 link_state->fd = !!(flags & (1 << MC_CMD_GET_LINK_OUT_FULL_DUPLEX_LBN));
334 link_state->speed = speed;
335}
336
afd4aea0
BH		 337static int efx_mcdi_phy_probe(struct efx_nic *efx)
338{
3bd93035 339 struct efx_mcdi_phy_data *phy_data;
59cfc479 340 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
ff3b00a0 341 u32 caps;
afd4aea0
BH		 342 int rc;
343
ff3b00a0
SH		 344 /* Initialise and populate phy_data */
345 phy_data = kzalloc(sizeof(*phy_data), GFP_KERNEL);
346 if (phy_data == NULL)
347 return -ENOMEM;
348
349 rc = efx_mcdi_get_phy_cfg(efx, phy_data);
afd4aea0
BH		 350 if (rc != 0)
351 goto fail;
352
ff3b00a0
SH		 353 /* Read initial link advertisement */
354 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
355 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
356 outbuf, sizeof(outbuf), NULL);
357 if (rc)
358 goto fail;
359
360 /* Fill out nic state */
361 efx->phy_data = phy_data;
362 efx->phy_type = phy_data->type;
afd4aea0 363
ff3b00a0
SH		 364 efx->mdio_bus = phy_data->channel;
365 efx->mdio.prtad = phy_data->port;
366 efx->mdio.mmds = phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22);
afd4aea0 367 efx->mdio.mode_support = 0;
ff3b00a0 368 if (phy_data->mmd_mask & (1 << MC_CMD_MMD_CLAUSE22))
afd4aea0 369 efx->mdio.mode_support |= MDIO_SUPPORTS_C22;
ff3b00a0 370 if (phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22))
afd4aea0
BH		 371 efx->mdio.mode_support |= MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
372
ff3b00a0
SH		 373 caps = MCDI_DWORD(outbuf, GET_LINK_OUT_CAP);
374 if (caps & (1 << MC_CMD_PHY_CAP_AN_LBN))
375 efx->link_advertising =
376 mcdi_to_ethtool_cap(phy_data->media, caps);
377 else
378 phy_data->forced_cap = caps;
379
afd4aea0
BH		 380 /* Assert that we can map efx -> mcdi loopback modes */
381 BUILD_BUG_ON(LOOPBACK_NONE != MC_CMD_LOOPBACK_NONE);
382 BUILD_BUG_ON(LOOPBACK_DATA != MC_CMD_LOOPBACK_DATA);
383 BUILD_BUG_ON(LOOPBACK_GMAC != MC_CMD_LOOPBACK_GMAC);
384 BUILD_BUG_ON(LOOPBACK_XGMII != MC_CMD_LOOPBACK_XGMII);
385 BUILD_BUG_ON(LOOPBACK_XGXS != MC_CMD_LOOPBACK_XGXS);
386 BUILD_BUG_ON(LOOPBACK_XAUI != MC_CMD_LOOPBACK_XAUI);
387 BUILD_BUG_ON(LOOPBACK_GMII != MC_CMD_LOOPBACK_GMII);
388 BUILD_BUG_ON(LOOPBACK_SGMII != MC_CMD_LOOPBACK_SGMII);
389 BUILD_BUG_ON(LOOPBACK_XGBR != MC_CMD_LOOPBACK_XGBR);
390 BUILD_BUG_ON(LOOPBACK_XFI != MC_CMD_LOOPBACK_XFI);
391 BUILD_BUG_ON(LOOPBACK_XAUI_FAR != MC_CMD_LOOPBACK_XAUI_FAR);
392 BUILD_BUG_ON(LOOPBACK_GMII_FAR != MC_CMD_LOOPBACK_GMII_FAR);
393 BUILD_BUG_ON(LOOPBACK_SGMII_FAR != MC_CMD_LOOPBACK_SGMII_FAR);
394 BUILD_BUG_ON(LOOPBACK_XFI_FAR != MC_CMD_LOOPBACK_XFI_FAR);
395 BUILD_BUG_ON(LOOPBACK_GPHY != MC_CMD_LOOPBACK_GPHY);
396 BUILD_BUG_ON(LOOPBACK_PHYXS != MC_CMD_LOOPBACK_PHYXS);
397 BUILD_BUG_ON(LOOPBACK_PCS != MC_CMD_LOOPBACK_PCS);
398 BUILD_BUG_ON(LOOPBACK_PMAPMD != MC_CMD_LOOPBACK_PMAPMD);
399 BUILD_BUG_ON(LOOPBACK_XPORT != MC_CMD_LOOPBACK_XPORT);
400 BUILD_BUG_ON(LOOPBACK_XGMII_WS != MC_CMD_LOOPBACK_XGMII_WS);
401 BUILD_BUG_ON(LOOPBACK_XAUI_WS != MC_CMD_LOOPBACK_XAUI_WS);
402 BUILD_BUG_ON(LOOPBACK_XAUI_WS_FAR != MC_CMD_LOOPBACK_XAUI_WS_FAR);
403 BUILD_BUG_ON(LOOPBACK_XAUI_WS_NEAR != MC_CMD_LOOPBACK_XAUI_WS_NEAR);
404 BUILD_BUG_ON(LOOPBACK_GMII_WS != MC_CMD_LOOPBACK_GMII_WS);
405 BUILD_BUG_ON(LOOPBACK_XFI_WS != MC_CMD_LOOPBACK_XFI_WS);
406 BUILD_BUG_ON(LOOPBACK_XFI_WS_FAR != MC_CMD_LOOPBACK_XFI_WS_FAR);
407 BUILD_BUG_ON(LOOPBACK_PHYXS_WS != MC_CMD_LOOPBACK_PHYXS_WS);
408
409 rc = efx_mcdi_loopback_modes(efx, &efx->loopback_modes);
410 if (rc != 0)
411 goto fail;
412 /* The MC indicates that LOOPBACK_NONE is a valid loopback mode,
413 * but by convention we don't */
414 efx->loopback_modes &= ~(1 << LOOPBACK_NONE);
415
7a6b8f6f
SH		 416 /* Set the initial link mode */
417 efx_mcdi_phy_decode_link(
418 efx, &efx->link_state,
419 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED),
420 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS),
421 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL));
422
423 /* Default to Autonegotiated flow control if the PHY supports it */
424 efx->wanted_fc = EFX_FC_RX | EFX_FC_TX;
425 if (phy_data->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
426 efx->wanted_fc |= EFX_FC_AUTO;
cffe9d4c 427 efx_link_set_wanted_fc(efx, efx->wanted_fc);
7a6b8f6f 428
afd4aea0
BH		 429 return 0;
430
431fail:
432 kfree(phy_data);
433 return rc;
434}
435
43f775b2 436int efx_mcdi_port_reconfigure(struct efx_nic *efx)
afd4aea0 437{
3bd93035 438 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
afd4aea0
BH		 439 u32 caps = (efx->link_advertising ?
440 ethtool_to_mcdi_cap(efx->link_advertising) :
441 phy_cfg->forced_cap);
442
443 return efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx),
444 efx->loopback_mode, 0);
445}
446
afd4aea0
BH		 447/* Verify that the forced flow control settings (!EFX_FC_AUTO) are
448 * supported by the link partner. Warn the user if this isn't the case
449 */
43f775b2 450static void efx_mcdi_phy_check_fcntl(struct efx_nic *efx, u32 lpa)
afd4aea0 451{
3bd93035 452 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
afd4aea0
BH		 453 u32 rmtadv;
454
25985edc 455 /* The link partner capabilities are only relevant if the
afd4aea0 456 * link supports flow control autonegotiation */
7a6b8f6f 457 if (~phy_cfg->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
afd4aea0
BH		 458 return;
459
460 /* If flow control autoneg is supported and enabled, then fine */
461 if (efx->wanted_fc & EFX_FC_AUTO)
462 return;
463
464 rmtadv = 0;
465 if (lpa & (1 << MC_CMD_PHY_CAP_PAUSE_LBN))
466 rmtadv |= ADVERTISED_Pause;
467 if (lpa & (1 << MC_CMD_PHY_CAP_ASYM_LBN))
468 rmtadv |= ADVERTISED_Asym_Pause;
469
470 if ((efx->wanted_fc & EFX_FC_TX) && rmtadv == ADVERTISED_Asym_Pause)
62776d03
BH		 471 netif_err(efx, link, efx->net_dev,
472 "warning: link partner doesn't support pause frames");
afd4aea0
BH		 473}
474
475static bool efx_mcdi_phy_poll(struct efx_nic *efx)
476{
477 struct efx_link_state old_state = efx->link_state;
59cfc479 478 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
afd4aea0
BH		 479 int rc;
480
481 WARN_ON(!mutex_is_locked(&efx->mac_lock));
482
483 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
484
485 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
486 outbuf, sizeof(outbuf), NULL);
1e0b8120 487 if (rc)
afd4aea0 488 efx->link_state.up = false;
1e0b8120 489 else
afd4aea0
BH		 490 efx_mcdi_phy_decode_link(
491 efx, &efx->link_state,
492 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED),
493 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS),
494 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL));
afd4aea0
BH		 495
496 return !efx_link_state_equal(&efx->link_state, &old_state);
497}
498
ff3b00a0 499static void efx_mcdi_phy_remove(struct efx_nic *efx)
afd4aea0
BH		 500{
501 struct efx_mcdi_phy_data *phy_data = efx->phy_data;
502
503 efx->phy_data = NULL;
504 kfree(phy_data);
505}
506
507static void efx_mcdi_phy_get_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd)
508{
3bd93035 509 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
59cfc479 510 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
afd4aea0
BH		 511 int rc;
512
513 ecmd->supported =
514 mcdi_to_ethtool_cap(phy_cfg->media, phy_cfg->supported_cap);
515 ecmd->advertising = efx->link_advertising;
70739497 516 ethtool_cmd_speed_set(ecmd, efx->link_state.speed);
afd4aea0
BH		 517 ecmd->duplex = efx->link_state.fd;
518 ecmd->port = mcdi_to_ethtool_media(phy_cfg->media);
519 ecmd->phy_address = phy_cfg->port;
520 ecmd->transceiver = XCVR_INTERNAL;
521 ecmd->autoneg = !!(efx->link_advertising & ADVERTISED_Autoneg);
522 ecmd->mdio_support = (efx->mdio.mode_support &
523 (MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22));
524
525 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
526 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
527 outbuf, sizeof(outbuf), NULL);
1e0b8120 528 if (rc)
afd4aea0 529 return;
afd4aea0
BH		 530 ecmd->lp_advertising =
531 mcdi_to_ethtool_cap(phy_cfg->media,
532 MCDI_DWORD(outbuf, GET_LINK_OUT_LP_CAP));
533}
534
535static int efx_mcdi_phy_set_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd)
536{
3bd93035 537 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
afd4aea0
BH		 538 u32 caps;
539 int rc;
540
541 if (ecmd->autoneg) {
542 caps = (ethtool_to_mcdi_cap(ecmd->advertising) |
543 1 << MC_CMD_PHY_CAP_AN_LBN);
544 } else if (ecmd->duplex) {
25db0338 545 switch (ethtool_cmd_speed(ecmd)) {
afd4aea0
BH		 546 case 10: caps = 1 << MC_CMD_PHY_CAP_10FDX_LBN; break;
547 case 100: caps = 1 << MC_CMD_PHY_CAP_100FDX_LBN; break;
548 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000FDX_LBN; break;
549 case 10000: caps = 1 << MC_CMD_PHY_CAP_10000FDX_LBN; break;
9a12a306 550 case 40000: caps = 1 << MC_CMD_PHY_CAP_40000FDX_LBN; break;
afd4aea0
BH		 551 default: return -EINVAL;
552 }
553 } else {
25db0338 554 switch (ethtool_cmd_speed(ecmd)) {
afd4aea0
BH		 555 case 10: caps = 1 << MC_CMD_PHY_CAP_10HDX_LBN; break;
556 case 100: caps = 1 << MC_CMD_PHY_CAP_100HDX_LBN; break;
557 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000HDX_LBN; break;
558 default: return -EINVAL;
559 }
560 }
561
562 rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx),
563 efx->loopback_mode, 0);
564 if (rc)
565 return rc;
566
567 if (ecmd->autoneg) {
568 efx_link_set_advertising(
569 efx, ecmd->advertising | ADVERTISED_Autoneg);
570 phy_cfg->forced_cap = 0;
571 } else {
572 efx_link_set_advertising(efx, 0);
573 phy_cfg->forced_cap = caps;
574 }
575 return 0;
576}
577
4f16c073
BH		 578static int efx_mcdi_phy_test_alive(struct efx_nic *efx)
579{
59cfc479 580 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_STATE_OUT_LEN);
4f16c073
BH		 581 size_t outlen;
582 int rc;
583
584 BUILD_BUG_ON(MC_CMD_GET_PHY_STATE_IN_LEN != 0);
585
586 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_STATE, NULL, 0,
587 outbuf, sizeof(outbuf), &outlen);
588 if (rc)
589 return rc;
590
591 if (outlen < MC_CMD_GET_PHY_STATE_OUT_LEN)
00bbb4a5 592 return -EIO;
05a9320f 593 if (MCDI_DWORD(outbuf, GET_PHY_STATE_OUT_STATE) != MC_CMD_PHY_STATE_OK)
4f16c073
BH		 594 return -EINVAL;
595
596 return 0;
597}
598
affaf485
SH		 599static const char *const mcdi_sft9001_cable_diag_names[] = {
600 "cable.pairA.length",
601 "cable.pairB.length",
602 "cable.pairC.length",
603 "cable.pairD.length",
604 "cable.pairA.status",
605 "cable.pairB.status",
606 "cable.pairC.status",
607 "cable.pairD.status",
608};
609
610static int efx_mcdi_bist(struct efx_nic *efx, unsigned int bist_mode,
611 int *results)
612{
613 unsigned int retry, i, count = 0;
614 size_t outlen;
615 u32 status;
c5bb0e98
BH		 616 MCDI_DECLARE_BUF(inbuf, MC_CMD_START_BIST_IN_LEN);
617 MCDI_DECLARE_BUF(outbuf, MC_CMD_POLL_BIST_OUT_SFT9001_LEN);
618 u8 *ptr;
affaf485
SH		 619 int rc;
620
affaf485 621 BUILD_BUG_ON(MC_CMD_START_BIST_OUT_LEN != 0);
c5bb0e98
BH		 622 MCDI_SET_DWORD(inbuf, START_BIST_IN_TYPE, bist_mode);
623 rc = efx_mcdi_rpc(efx, MC_CMD_START_BIST,
624 inbuf, MC_CMD_START_BIST_IN_LEN, NULL, 0, NULL);
affaf485
SH		 625 if (rc)
626 goto out;
627
628 /* Wait up to 10s for BIST to finish */
629 for (retry = 0; retry < 100; ++retry) {
630 BUILD_BUG_ON(MC_CMD_POLL_BIST_IN_LEN != 0);
631 rc = efx_mcdi_rpc(efx, MC_CMD_POLL_BIST, NULL, 0,
c5bb0e98 632 outbuf, sizeof(outbuf), &outlen);
affaf485
SH		 633 if (rc)
634 goto out;
635
c5bb0e98 636 status = MCDI_DWORD(outbuf, POLL_BIST_OUT_RESULT);
affaf485
SH		 637 if (status != MC_CMD_POLL_BIST_RUNNING)
638 goto finished;
639
640 msleep(100);
641 }
642
643 rc = -ETIMEDOUT;
644 goto out;
645
646finished:
647 results[count++] = (status == MC_CMD_POLL_BIST_PASSED) ? 1 : -1;
648
649 /* SFT9001 specific cable diagnostics output */
650 if (efx->phy_type == PHY_TYPE_SFT9001B &&
651 (bist_mode == MC_CMD_PHY_BIST_CABLE_SHORT ||
652 bist_mode == MC_CMD_PHY_BIST_CABLE_LONG)) {
c5bb0e98 653 ptr = MCDI_PTR(outbuf, POLL_BIST_OUT_SFT9001_CABLE_LENGTH_A);
affaf485
SH		 654 if (status == MC_CMD_POLL_BIST_PASSED &&
655 outlen >= MC_CMD_POLL_BIST_OUT_SFT9001_LEN) {
656 for (i = 0; i < 8; i++) {
657 results[count + i] =
658 EFX_DWORD_FIELD(((efx_dword_t *)ptr)[i],
659 EFX_DWORD_0);
660 }
661 }
662 count += 8;
663 }
664 rc = count;
665
666out:
affaf485
SH		 667 return rc;
668}
669
670static int efx_mcdi_phy_run_tests(struct efx_nic *efx, int *results,
671 unsigned flags)
672{
3bd93035 673 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
affaf485
SH		 674 u32 mode;
675 int rc;
676
05a9320f 677 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) {
affaf485
SH		 678 rc = efx_mcdi_bist(efx, MC_CMD_PHY_BIST, results);
679 if (rc < 0)
680 return rc;
681
682 results += rc;
683 }
684
685 /* If we support both LONG and SHORT, then run each in response to
686 * break or not. Otherwise, run the one we support */
687 mode = 0;
05a9320f 688 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN)) {
affaf485
SH		 689 if ((flags & ETH_TEST_FL_OFFLINE) &&
690 (phy_cfg->flags &
05a9320f 691 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN)))
affaf485
SH		 692 mode = MC_CMD_PHY_BIST_CABLE_LONG;
693 else
694 mode = MC_CMD_PHY_BIST_CABLE_SHORT;
695 } else if (phy_cfg->flags &
05a9320f 696 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))
affaf485
SH		 697 mode = MC_CMD_PHY_BIST_CABLE_LONG;
698
699 if (mode != 0) {
700 rc = efx_mcdi_bist(efx, mode, results);
701 if (rc < 0)
702 return rc;
703 results += rc;
704 }
705
706 return 0;
707}
708
d215697f 709static const char *efx_mcdi_phy_test_name(struct efx_nic *efx,
710 unsigned int index)
affaf485 711{
3bd93035 712 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
affaf485 713
05a9320f 714 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) {
affaf485
SH		 715 if (index == 0)
716 return "bist";
717 --index;
718 }
719
05a9320f
BH		 720 if (phy_cfg->flags & ((1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN) |
721 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))) {
affaf485
SH		 722 if (index == 0)
723 return "cable";
724 --index;
725
726 if (efx->phy_type == PHY_TYPE_SFT9001B) {
727 if (index < ARRAY_SIZE(mcdi_sft9001_cable_diag_names))
728 return mcdi_sft9001_cable_diag_names[index];
729 index -= ARRAY_SIZE(mcdi_sft9001_cable_diag_names);
730 }
731 }
732
733 return NULL;
734}
735
c087bd2c
SH		 736#define SFP_PAGE_SIZE 128
737#define SFP_NUM_PAGES 2
738static int efx_mcdi_phy_get_module_eeprom(struct efx_nic *efx,
739 struct ethtool_eeprom *ee, u8 *data)
740{
59cfc479
BH		 741 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_MEDIA_INFO_OUT_LENMAX);
742 MCDI_DECLARE_BUF(inbuf, MC_CMD_GET_PHY_MEDIA_INFO_IN_LEN);
c087bd2c
SH		 743 size_t outlen;
744 int rc;
745 unsigned int payload_len;
746 unsigned int space_remaining = ee->len;
747 unsigned int page;
748 unsigned int page_off;
749 unsigned int to_copy;
750 u8 *user_data = data;
751
752 BUILD_BUG_ON(SFP_PAGE_SIZE * SFP_NUM_PAGES != ETH_MODULE_SFF_8079_LEN);
753
754 page_off = ee->offset % SFP_PAGE_SIZE;
755 page = ee->offset / SFP_PAGE_SIZE;
756
757 while (space_remaining && (page < SFP_NUM_PAGES)) {
758 MCDI_SET_DWORD(inbuf, GET_PHY_MEDIA_INFO_IN_PAGE, page);
759
760 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_MEDIA_INFO,
761 inbuf, sizeof(inbuf),
762 outbuf, sizeof(outbuf),
763 &outlen);
764 if (rc)
765 return rc;
766
767 if (outlen < (MC_CMD_GET_PHY_MEDIA_INFO_OUT_DATA_OFST +
768 SFP_PAGE_SIZE))
769 return -EIO;
770
771 payload_len = MCDI_DWORD(outbuf,
772 GET_PHY_MEDIA_INFO_OUT_DATALEN);
773 if (payload_len != SFP_PAGE_SIZE)
774 return -EIO;
775
776 /* Copy as much as we can into data */
777 payload_len -= page_off;
778 to_copy = (space_remaining < payload_len) ?
779 space_remaining : payload_len;
780
781 memcpy(user_data,
c5bb0e98 782 MCDI_PTR(outbuf, GET_PHY_MEDIA_INFO_OUT_DATA) + page_off,
c087bd2c
SH		 783 to_copy);
784
785 space_remaining -= to_copy;
786 user_data += to_copy;
787 page_off = 0;
788 page++;
789 }
790
791 return 0;
792}
793
794static int efx_mcdi_phy_get_module_info(struct efx_nic *efx,
795 struct ethtool_modinfo *modinfo)
796{
797 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
798
799 switch (phy_cfg->media) {
800 case MC_CMD_MEDIA_SFP_PLUS:
801 modinfo->type = ETH_MODULE_SFF_8079;
802 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
803 return 0;
804 default:
805 return -EOPNOTSUPP;
806 }
807}
808
43f775b2 809static const struct efx_phy_operations efx_mcdi_phy_ops = {
afd4aea0 810 .probe = efx_mcdi_phy_probe,
9c636baf 811 .init = efx_port_dummy_op_int,
43f775b2 812 .reconfigure = efx_mcdi_port_reconfigure,
afd4aea0 813 .poll = efx_mcdi_phy_poll,
ff3b00a0
SH		 814 .fini = efx_port_dummy_op_void,
815 .remove = efx_mcdi_phy_remove,
afd4aea0
BH		 816 .get_settings = efx_mcdi_phy_get_settings,
817 .set_settings = efx_mcdi_phy_set_settings,
4f16c073 818 .test_alive = efx_mcdi_phy_test_alive,
affaf485
SH		 819 .run_tests = efx_mcdi_phy_run_tests,
820 .test_name = efx_mcdi_phy_test_name,
c087bd2c
SH		 821 .get_module_eeprom = efx_mcdi_phy_get_module_eeprom,
822 .get_module_info = efx_mcdi_phy_get_module_info,
afd4aea0 823};
43f775b2 824
8127d661
BH		 825u32 efx_mcdi_phy_get_caps(struct efx_nic *efx)
826{
827 struct efx_mcdi_phy_data *phy_data = efx->phy_data;
828
829 return phy_data->supported_cap;
830}
831
43f775b2
BH		 832static unsigned int efx_mcdi_event_link_speed[] = {
833 [MCDI_EVENT_LINKCHANGE_SPEED_100M] = 100,
834 [MCDI_EVENT_LINKCHANGE_SPEED_1G] = 1000,
835 [MCDI_EVENT_LINKCHANGE_SPEED_10G] = 10000,
9a12a306 836 [MCDI_EVENT_LINKCHANGE_SPEED_40G] = 40000,
43f775b2
BH		 837};
838
839void efx_mcdi_process_link_change(struct efx_nic *efx, efx_qword_t *ev)
840{
841 u32 flags, fcntl, speed, lpa;
842
843 speed = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_SPEED);
844 EFX_BUG_ON_PARANOID(speed >= ARRAY_SIZE(efx_mcdi_event_link_speed));
845 speed = efx_mcdi_event_link_speed[speed];
846
847 flags = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LINK_FLAGS);
848 fcntl = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_FCNTL);
849 lpa = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LP_CAP);
850
851 /* efx->link_state is only modified by efx_mcdi_phy_get_link(),
852 * which is only run after flushing the event queues. Therefore, it
853 * is safe to modify the link state outside of the mac_lock here.
854 */
855 efx_mcdi_phy_decode_link(efx, &efx->link_state, speed, flags, fcntl);
856
857 efx_mcdi_phy_check_fcntl(efx, lpa);
858
859 efx_link_status_changed(efx);
860}
861
862int efx_mcdi_set_mac(struct efx_nic *efx)
863{
964e6135 864 u32 fcntl;
43f775b2
BH		 865 MCDI_DECLARE_BUF(cmdbytes, MC_CMD_SET_MAC_IN_LEN);
866
867 BUILD_BUG_ON(MC_CMD_SET_MAC_OUT_LEN != 0);
868
910c8789 869 /* This has no effect on EF10 */
cd84ff4d
EC		 870 ether_addr_copy(MCDI_PTR(cmdbytes, SET_MAC_IN_ADDR),
871 efx->net_dev->dev_addr);
43f775b2
BH		 872
873 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_MTU,
874 EFX_MAX_FRAME_LEN(efx->net_dev->mtu));
875 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_DRAIN, 0);
876
964e6135
BH		 877 /* Set simple MAC filter for Siena */
878 MCDI_POPULATE_DWORD_1(cmdbytes, SET_MAC_IN_REJECT,
879 SET_MAC_IN_REJECT_UNCST, efx->unicast_filter);
43f775b2
BH		 880
881 switch (efx->wanted_fc) {
882 case EFX_FC_RX | EFX_FC_TX:
883 fcntl = MC_CMD_FCNTL_BIDIR;
884 break;
885 case EFX_FC_RX:
886 fcntl = MC_CMD_FCNTL_RESPOND;
887 break;
888 default:
889 fcntl = MC_CMD_FCNTL_OFF;
890 break;
891 }
892 if (efx->wanted_fc & EFX_FC_AUTO)
893 fcntl = MC_CMD_FCNTL_AUTO;
894 if (efx->fc_disable)
895 fcntl = MC_CMD_FCNTL_OFF;
896
897 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_FCNTL, fcntl);
898
899 return efx_mcdi_rpc(efx, MC_CMD_SET_MAC, cmdbytes, sizeof(cmdbytes),
900 NULL, 0, NULL);
901}
902
903bool efx_mcdi_mac_check_fault(struct efx_nic *efx)
904{
905 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
906 size_t outlength;
907 int rc;
908
909 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
910
911 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
912 outbuf, sizeof(outbuf), &outlength);
1e0b8120 913 if (rc)
43f775b2 914 return true;
43f775b2
BH		 915
916 return MCDI_DWORD(outbuf, GET_LINK_OUT_MAC_FAULT) != 0;
917}
918
f8f3b5ae
JC		 919enum efx_stats_action {
920 EFX_STATS_ENABLE,
921 EFX_STATS_DISABLE,
922 EFX_STATS_PULL,
923};
924
925static int efx_mcdi_mac_stats(struct efx_nic *efx,
926 enum efx_stats_action action, int clear)
43f775b2 927{
0a2ab4d9 928 struct efx_ef10_nic_data *nic_data = efx->nic_data;
43f775b2
BH		 929 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAC_STATS_IN_LEN);
930 int rc;
f8f3b5ae
JC		 931 int change = action == EFX_STATS_PULL ? 0 : 1;
932 int enable = action == EFX_STATS_ENABLE ? 1 : 0;
933 int period = action == EFX_STATS_ENABLE ? 1000 : 0;
934 dma_addr_t dma_addr = efx->stats_buffer.dma_addr;
935 u32 dma_len = action != EFX_STATS_DISABLE ?
936 MC_CMD_MAC_NSTATS * sizeof(u64) : 0;
43f775b2
BH		 937
938 BUILD_BUG_ON(MC_CMD_MAC_STATS_OUT_DMA_LEN != 0);
939
940 MCDI_SET_QWORD(inbuf, MAC_STATS_IN_DMA_ADDR, dma_addr);
f5253d92
BH		 941 MCDI_POPULATE_DWORD_7(inbuf, MAC_STATS_IN_CMD,
942 MAC_STATS_IN_DMA, !!enable,
943 MAC_STATS_IN_CLEAR, clear,
f8f3b5ae
JC		 944 MAC_STATS_IN_PERIODIC_CHANGE, change,
945 MAC_STATS_IN_PERIODIC_ENABLE, enable,
f5253d92
BH		 946 MAC_STATS_IN_PERIODIC_CLEAR, 0,
947 MAC_STATS_IN_PERIODIC_NOEVENT, 1,
948 MAC_STATS_IN_PERIOD_MS, period);
43f775b2 949 MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_LEN, dma_len);
0a2ab4d9 950 MCDI_SET_DWORD(inbuf, MAC_STATS_IN_PORT_ID, nic_data->vport_id);
43f775b2 951
6dd4859b
DP		 952 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_MAC_STATS, inbuf, sizeof(inbuf),
953 NULL, 0, NULL);
954 /* Expect ENOENT if DMA queues have not been set up */
955 if (rc && (rc != -ENOENT || atomic_read(&efx->active_queues)))
956 efx_mcdi_display_error(efx, MC_CMD_MAC_STATS, sizeof(inbuf),
957 NULL, 0, rc);
43f775b2
BH		 958 return rc;
959}
960
961void efx_mcdi_mac_start_stats(struct efx_nic *efx)
962{
963 __le64 *dma_stats = efx->stats_buffer.addr;
964
965 dma_stats[MC_CMD_MAC_GENERATION_END] = EFX_MC_STATS_GENERATION_INVALID;
966
f8f3b5ae 967 efx_mcdi_mac_stats(efx, EFX_STATS_ENABLE, 0);
43f775b2
BH		 968}
969
970void efx_mcdi_mac_stop_stats(struct efx_nic *efx)
971{
f8f3b5ae
JC		 972 efx_mcdi_mac_stats(efx, EFX_STATS_DISABLE, 0);
973}
974
975#define EFX_MAC_STATS_WAIT_US 100
976#define EFX_MAC_STATS_WAIT_ATTEMPTS 10
977
978void efx_mcdi_mac_pull_stats(struct efx_nic *efx)
979{
980 __le64 *dma_stats = efx->stats_buffer.addr;
981 int attempts = EFX_MAC_STATS_WAIT_ATTEMPTS;
982
983 dma_stats[MC_CMD_MAC_GENERATION_END] = EFX_MC_STATS_GENERATION_INVALID;
984 efx_mcdi_mac_stats(efx, EFX_STATS_PULL, 0);
985
986 while (dma_stats[MC_CMD_MAC_GENERATION_END] ==
987 EFX_MC_STATS_GENERATION_INVALID &&
988 attempts-- != 0)
989 udelay(EFX_MAC_STATS_WAIT_US);
43f775b2
BH		 990}
991
992int efx_mcdi_port_probe(struct efx_nic *efx)
993{
994 int rc;
995
996 /* Hook in PHY operations table */
997 efx->phy_op = &efx_mcdi_phy_ops;
998
999 /* Set up MDIO structure for PHY */
1000 efx->mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
1001 efx->mdio.mdio_read = efx_mcdi_mdio_read;
1002 efx->mdio.mdio_write = efx_mcdi_mdio_write;
1003
1004 /* Fill out MDIO structure, loopback modes, and initial link state */
1005 rc = efx->phy_op->probe(efx);
1006 if (rc != 0)
1007 return rc;
1008
1009 /* Allocate buffer for stats */
1010 rc = efx_nic_alloc_buffer(efx, &efx->stats_buffer,
0d19a540 1011 MC_CMD_MAC_NSTATS * sizeof(u64), GFP_KERNEL);
43f775b2
BH		 1012 if (rc)
1013 return rc;
1014 netif_dbg(efx, probe, efx->net_dev,
1015 "stats buffer at %llx (virt %p phys %llx)\n",
1016 (u64)efx->stats_buffer.dma_addr,
1017 efx->stats_buffer.addr,
1018 (u64)virt_to_phys(efx->stats_buffer.addr));
1019
f8f3b5ae 1020 efx_mcdi_mac_stats(efx, EFX_STATS_DISABLE, 1);
43f775b2
BH		 1021
1022 return 0;
1023}
1024
1025void efx_mcdi_port_remove(struct efx_nic *efx)
1026{
1027 efx->phy_op->remove(efx);
1028 efx_nic_free_buffer(efx, &efx->stats_buffer);
1029}
8127d661
BH		 1030
1031/* Get physical port number (EF10 only; on Siena it is same as PF number) */
1032int efx_mcdi_port_get_number(struct efx_nic *efx)
1033{
1034 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PORT_ASSIGNMENT_OUT_LEN);
1035 int rc;
1036
1037 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PORT_ASSIGNMENT, NULL, 0,
1038 outbuf, sizeof(outbuf), NULL);
1039 if (rc)
1040 return rc;
1041
1042 return MCDI_DWORD(outbuf, GET_PORT_ASSIGNMENT_OUT_PORT);
1043}
Linux 6.x block layer and io_uring tree(s)