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1// SPDX-License-Identifier: GPL-2.0-only
2/****************************************************************************
3 * Driver for Solarflare network controllers and boards
4 * Copyright 2009-2013 Solarflare Communications Inc.
5 */
6
7/*
8 * Driver for PHY related operations via MCDI.
9 */
10
11#include <linux/slab.h>
12#include "efx.h"
13#include "mcdi_port.h"
14#include "mcdi.h"
15#include "mcdi_pcol.h"
16#include "nic.h"
17#include "selftest.h"
18#include "mcdi_port_common.h"
19
20static int efx_mcdi_mdio_read(struct net_device *net_dev,
21 int prtad, int devad, u16 addr)
22{
23 struct efx_nic *efx = efx_netdev_priv(net_dev);
24 MCDI_DECLARE_BUF(inbuf, MC_CMD_MDIO_READ_IN_LEN);
25 MCDI_DECLARE_BUF(outbuf, MC_CMD_MDIO_READ_OUT_LEN);
26 size_t outlen;
27 int rc;
28
29 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_BUS, efx->mdio_bus);
30 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_PRTAD, prtad);
31 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_DEVAD, devad);
32 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_ADDR, addr);
33
34 rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_READ, inbuf, sizeof(inbuf),
35 outbuf, sizeof(outbuf), &outlen);
36 if (rc)
37 return rc;
38
39 if (MCDI_DWORD(outbuf, MDIO_READ_OUT_STATUS) !=
40 MC_CMD_MDIO_STATUS_GOOD)
41 return -EIO;
42
43 return (u16)MCDI_DWORD(outbuf, MDIO_READ_OUT_VALUE);
44}
45
46static int efx_mcdi_mdio_write(struct net_device *net_dev,
47 int prtad, int devad, u16 addr, u16 value)
48{
49 struct efx_nic *efx = efx_netdev_priv(net_dev);
50 MCDI_DECLARE_BUF(inbuf, MC_CMD_MDIO_WRITE_IN_LEN);
51 MCDI_DECLARE_BUF(outbuf, MC_CMD_MDIO_WRITE_OUT_LEN);
52 size_t outlen;
53 int rc;
54
55 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_BUS, efx->mdio_bus);
56 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_PRTAD, prtad);
57 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_DEVAD, devad);
58 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_ADDR, addr);
59 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_VALUE, value);
60
61 rc = efx_mcdi_rpc(efx, MC_CMD_MDIO_WRITE, inbuf, sizeof(inbuf),
62 outbuf, sizeof(outbuf), &outlen);
63 if (rc)
64 return rc;
65
66 if (MCDI_DWORD(outbuf, MDIO_WRITE_OUT_STATUS) !=
67 MC_CMD_MDIO_STATUS_GOOD)
68 return -EIO;
69
70 return 0;
71}
72
73u32 efx_mcdi_phy_get_caps(struct efx_nic *efx)
74{
75 struct efx_mcdi_phy_data *phy_data = efx->phy_data;
76
77 return phy_data->supported_cap;
78}
79
80bool efx_mcdi_mac_check_fault(struct efx_nic *efx)
81{
82 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
83 size_t outlength;
84 int rc;
85
86 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
87
88 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
89 outbuf, sizeof(outbuf), &outlength);
90 if (rc)
91 return true;
92
93 return MCDI_DWORD(outbuf, GET_LINK_OUT_MAC_FAULT) != 0;
94}
95
96int efx_mcdi_port_probe(struct efx_nic *efx)
97{
98 int rc;
99
100 /* Set up MDIO structure for PHY */
101 efx->mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
102 efx->mdio.mdio_read = efx_mcdi_mdio_read;
103 efx->mdio.mdio_write = efx_mcdi_mdio_write;
104
105 /* Fill out MDIO structure, loopback modes, and initial link state */
106 rc = efx_mcdi_phy_probe(efx);
107 if (rc != 0)
108 return rc;
109
110 return efx_mcdi_mac_init_stats(efx);
111}
112
113void efx_mcdi_port_remove(struct efx_nic *efx)
114{
115 efx_mcdi_phy_remove(efx);
116 efx_mcdi_mac_fini_stats(efx);
117}
1/****************************************************************************
2 * Driver for Solarflare network controllers and boards
3 * Copyright 2009-2013 Solarflare Communications Inc.
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
14#include <linux/slab.h>
15#include "efx.h"
16#include "phy.h"
17#include "mcdi.h"
18#include "mcdi_pcol.h"
19#include "nic.h"
20#include "selftest.h"
21
22struct efx_mcdi_phy_data {
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
37efx_mcdi_get_phy_cfg(struct efx_nic *efx, struct efx_mcdi_phy_data *cfg)
38{
39 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_CFG_OUT_LEN);
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) {
52 rc = -EIO;
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:
73 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
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{
81 MCDI_DECLARE_BUF(inbuf, MC_CMD_SET_LINK_IN_LEN);
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);
93 return rc;
94}
95
96static int efx_mcdi_loopback_modes(struct efx_nic *efx, u64 *loopback_modes)
97{
98 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LOOPBACK_MODES_OUT_LEN);
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
107 if (outlen < (MC_CMD_GET_LOOPBACK_MODES_OUT_SUGGESTED_OFST +
108 MC_CMD_GET_LOOPBACK_MODES_OUT_SUGGESTED_LEN)) {
109 rc = -EIO;
110 goto fail;
111 }
112
113 *loopback_modes = MCDI_QWORD(outbuf, GET_LOOPBACK_MODES_OUT_SUGGESTED);
114
115 return 0;
116
117fail:
118 netif_err(efx, hw, efx->net_dev, "%s: failed rc=%d\n", __func__, rc);
119 return rc;
120}
121
122static int efx_mcdi_mdio_read(struct net_device *net_dev,
123 int prtad, int devad, u16 addr)
124{
125 struct efx_nic *efx = netdev_priv(net_dev);
126 MCDI_DECLARE_BUF(inbuf, MC_CMD_MDIO_READ_IN_LEN);
127 MCDI_DECLARE_BUF(outbuf, MC_CMD_MDIO_READ_OUT_LEN);
128 size_t outlen;
129 int rc;
130
131 MCDI_SET_DWORD(inbuf, MDIO_READ_IN_BUS, efx->mdio_bus);
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)
139 return rc;
140
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);
146}
147
148static int efx_mcdi_mdio_write(struct net_device *net_dev,
149 int prtad, int devad, u16 addr, u16 value)
150{
151 struct efx_nic *efx = netdev_priv(net_dev);
152 MCDI_DECLARE_BUF(inbuf, MC_CMD_MDIO_WRITE_IN_LEN);
153 MCDI_DECLARE_BUF(outbuf, MC_CMD_MDIO_WRITE_OUT_LEN);
154 size_t outlen;
155 int rc;
156
157 MCDI_SET_DWORD(inbuf, MDIO_WRITE_IN_BUS, efx->mdio_bus);
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)
166 return rc;
167
168 if (MCDI_DWORD(outbuf, MDIO_WRITE_OUT_STATUS) !=
169 MC_CMD_MDIO_STATUS_GOOD)
170 return -EIO;
171
172 return 0;
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;
186 break;
187
188 case MC_CMD_MEDIA_XFP:
189 case MC_CMD_MEDIA_SFP_PLUS:
190 result |= SUPPORTED_FIBRE;
191 break;
192
193 case MC_CMD_MEDIA_BASE_T:
194 result |= SUPPORTED_TP;
195 if (cap & (1 << MC_CMD_PHY_CAP_10HDX_LBN))
196 result |= SUPPORTED_10baseT_Half;
197 if (cap & (1 << MC_CMD_PHY_CAP_10FDX_LBN))
198 result |= SUPPORTED_10baseT_Full;
199 if (cap & (1 << MC_CMD_PHY_CAP_100HDX_LBN))
200 result |= SUPPORTED_100baseT_Half;
201 if (cap & (1 << MC_CMD_PHY_CAP_100FDX_LBN))
202 result |= SUPPORTED_100baseT_Full;
203 if (cap & (1 << MC_CMD_PHY_CAP_1000HDX_LBN))
204 result |= SUPPORTED_1000baseT_Half;
205 if (cap & (1 << MC_CMD_PHY_CAP_1000FDX_LBN))
206 result |= SUPPORTED_1000baseT_Full;
207 if (cap & (1 << MC_CMD_PHY_CAP_10000FDX_LBN))
208 result |= SUPPORTED_10000baseT_Full;
209 break;
210 }
211
212 if (cap & (1 << MC_CMD_PHY_CAP_PAUSE_LBN))
213 result |= SUPPORTED_Pause;
214 if (cap & (1 << MC_CMD_PHY_CAP_ASYM_LBN))
215 result |= SUPPORTED_Asym_Pause;
216 if (cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
217 result |= SUPPORTED_Autoneg;
218
219 return result;
220}
221
222static u32 ethtool_to_mcdi_cap(u32 cap)
223{
224 u32 result = 0;
225
226 if (cap & SUPPORTED_10baseT_Half)
227 result |= (1 << MC_CMD_PHY_CAP_10HDX_LBN);
228 if (cap & SUPPORTED_10baseT_Full)
229 result |= (1 << MC_CMD_PHY_CAP_10FDX_LBN);
230 if (cap & SUPPORTED_100baseT_Half)
231 result |= (1 << MC_CMD_PHY_CAP_100HDX_LBN);
232 if (cap & SUPPORTED_100baseT_Full)
233 result |= (1 << MC_CMD_PHY_CAP_100FDX_LBN);
234 if (cap & SUPPORTED_1000baseT_Half)
235 result |= (1 << MC_CMD_PHY_CAP_1000HDX_LBN);
236 if (cap & (SUPPORTED_1000baseT_Full | SUPPORTED_1000baseKX_Full))
237 result |= (1 << MC_CMD_PHY_CAP_1000FDX_LBN);
238 if (cap & (SUPPORTED_10000baseT_Full | SUPPORTED_10000baseKX4_Full))
239 result |= (1 << MC_CMD_PHY_CAP_10000FDX_LBN);
240 if (cap & SUPPORTED_Pause)
241 result |= (1 << MC_CMD_PHY_CAP_PAUSE_LBN);
242 if (cap & SUPPORTED_Asym_Pause)
243 result |= (1 << MC_CMD_PHY_CAP_ASYM_LBN);
244 if (cap & SUPPORTED_Autoneg)
245 result |= (1 << MC_CMD_PHY_CAP_AN_LBN);
246
247 return result;
248}
249
250static u32 efx_get_mcdi_phy_flags(struct efx_nic *efx)
251{
252 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
253 enum efx_phy_mode mode, supported;
254 u32 flags;
255
256 /* TODO: Advertise the capabilities supported by this PHY */
257 supported = 0;
258 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_TXDIS_LBN))
259 supported |= PHY_MODE_TX_DISABLED;
260 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_LOWPOWER_LBN))
261 supported |= PHY_MODE_LOW_POWER;
262 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_POWEROFF_LBN))
263 supported |= PHY_MODE_OFF;
264
265 mode = efx->phy_mode & supported;
266
267 flags = 0;
268 if (mode & PHY_MODE_TX_DISABLED)
269 flags |= (1 << MC_CMD_SET_LINK_IN_TXDIS_LBN);
270 if (mode & PHY_MODE_LOW_POWER)
271 flags |= (1 << MC_CMD_SET_LINK_IN_LOWPOWER_LBN);
272 if (mode & PHY_MODE_OFF)
273 flags |= (1 << MC_CMD_SET_LINK_IN_POWEROFF_LBN);
274
275 return flags;
276}
277
278static u32 mcdi_to_ethtool_media(u32 media)
279{
280 switch (media) {
281 case MC_CMD_MEDIA_XAUI:
282 case MC_CMD_MEDIA_CX4:
283 case MC_CMD_MEDIA_KX4:
284 return PORT_OTHER;
285
286 case MC_CMD_MEDIA_XFP:
287 case MC_CMD_MEDIA_SFP_PLUS:
288 return PORT_FIBRE;
289
290 case MC_CMD_MEDIA_BASE_T:
291 return PORT_TP;
292
293 default:
294 return PORT_OTHER;
295 }
296}
297
298static void efx_mcdi_phy_decode_link(struct efx_nic *efx,
299 struct efx_link_state *link_state,
300 u32 speed, u32 flags, u32 fcntl)
301{
302 switch (fcntl) {
303 case MC_CMD_FCNTL_AUTO:
304 WARN_ON(1); /* This is not a link mode */
305 link_state->fc = EFX_FC_AUTO | EFX_FC_TX | EFX_FC_RX;
306 break;
307 case MC_CMD_FCNTL_BIDIR:
308 link_state->fc = EFX_FC_TX | EFX_FC_RX;
309 break;
310 case MC_CMD_FCNTL_RESPOND:
311 link_state->fc = EFX_FC_RX;
312 break;
313 default:
314 WARN_ON(1);
315 case MC_CMD_FCNTL_OFF:
316 link_state->fc = 0;
317 break;
318 }
319
320 link_state->up = !!(flags & (1 << MC_CMD_GET_LINK_OUT_LINK_UP_LBN));
321 link_state->fd = !!(flags & (1 << MC_CMD_GET_LINK_OUT_FULL_DUPLEX_LBN));
322 link_state->speed = speed;
323}
324
325static int efx_mcdi_phy_probe(struct efx_nic *efx)
326{
327 struct efx_mcdi_phy_data *phy_data;
328 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
329 u32 caps;
330 int rc;
331
332 /* Initialise and populate phy_data */
333 phy_data = kzalloc(sizeof(*phy_data), GFP_KERNEL);
334 if (phy_data == NULL)
335 return -ENOMEM;
336
337 rc = efx_mcdi_get_phy_cfg(efx, phy_data);
338 if (rc != 0)
339 goto fail;
340
341 /* Read initial link advertisement */
342 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
343 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
344 outbuf, sizeof(outbuf), NULL);
345 if (rc)
346 goto fail;
347
348 /* Fill out nic state */
349 efx->phy_data = phy_data;
350 efx->phy_type = phy_data->type;
351
352 efx->mdio_bus = phy_data->channel;
353 efx->mdio.prtad = phy_data->port;
354 efx->mdio.mmds = phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22);
355 efx->mdio.mode_support = 0;
356 if (phy_data->mmd_mask & (1 << MC_CMD_MMD_CLAUSE22))
357 efx->mdio.mode_support |= MDIO_SUPPORTS_C22;
358 if (phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22))
359 efx->mdio.mode_support |= MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
360
361 caps = MCDI_DWORD(outbuf, GET_LINK_OUT_CAP);
362 if (caps & (1 << MC_CMD_PHY_CAP_AN_LBN))
363 efx->link_advertising =
364 mcdi_to_ethtool_cap(phy_data->media, caps);
365 else
366 phy_data->forced_cap = caps;
367
368 /* Assert that we can map efx -> mcdi loopback modes */
369 BUILD_BUG_ON(LOOPBACK_NONE != MC_CMD_LOOPBACK_NONE);
370 BUILD_BUG_ON(LOOPBACK_DATA != MC_CMD_LOOPBACK_DATA);
371 BUILD_BUG_ON(LOOPBACK_GMAC != MC_CMD_LOOPBACK_GMAC);
372 BUILD_BUG_ON(LOOPBACK_XGMII != MC_CMD_LOOPBACK_XGMII);
373 BUILD_BUG_ON(LOOPBACK_XGXS != MC_CMD_LOOPBACK_XGXS);
374 BUILD_BUG_ON(LOOPBACK_XAUI != MC_CMD_LOOPBACK_XAUI);
375 BUILD_BUG_ON(LOOPBACK_GMII != MC_CMD_LOOPBACK_GMII);
376 BUILD_BUG_ON(LOOPBACK_SGMII != MC_CMD_LOOPBACK_SGMII);
377 BUILD_BUG_ON(LOOPBACK_XGBR != MC_CMD_LOOPBACK_XGBR);
378 BUILD_BUG_ON(LOOPBACK_XFI != MC_CMD_LOOPBACK_XFI);
379 BUILD_BUG_ON(LOOPBACK_XAUI_FAR != MC_CMD_LOOPBACK_XAUI_FAR);
380 BUILD_BUG_ON(LOOPBACK_GMII_FAR != MC_CMD_LOOPBACK_GMII_FAR);
381 BUILD_BUG_ON(LOOPBACK_SGMII_FAR != MC_CMD_LOOPBACK_SGMII_FAR);
382 BUILD_BUG_ON(LOOPBACK_XFI_FAR != MC_CMD_LOOPBACK_XFI_FAR);
383 BUILD_BUG_ON(LOOPBACK_GPHY != MC_CMD_LOOPBACK_GPHY);
384 BUILD_BUG_ON(LOOPBACK_PHYXS != MC_CMD_LOOPBACK_PHYXS);
385 BUILD_BUG_ON(LOOPBACK_PCS != MC_CMD_LOOPBACK_PCS);
386 BUILD_BUG_ON(LOOPBACK_PMAPMD != MC_CMD_LOOPBACK_PMAPMD);
387 BUILD_BUG_ON(LOOPBACK_XPORT != MC_CMD_LOOPBACK_XPORT);
388 BUILD_BUG_ON(LOOPBACK_XGMII_WS != MC_CMD_LOOPBACK_XGMII_WS);
389 BUILD_BUG_ON(LOOPBACK_XAUI_WS != MC_CMD_LOOPBACK_XAUI_WS);
390 BUILD_BUG_ON(LOOPBACK_XAUI_WS_FAR != MC_CMD_LOOPBACK_XAUI_WS_FAR);
391 BUILD_BUG_ON(LOOPBACK_XAUI_WS_NEAR != MC_CMD_LOOPBACK_XAUI_WS_NEAR);
392 BUILD_BUG_ON(LOOPBACK_GMII_WS != MC_CMD_LOOPBACK_GMII_WS);
393 BUILD_BUG_ON(LOOPBACK_XFI_WS != MC_CMD_LOOPBACK_XFI_WS);
394 BUILD_BUG_ON(LOOPBACK_XFI_WS_FAR != MC_CMD_LOOPBACK_XFI_WS_FAR);
395 BUILD_BUG_ON(LOOPBACK_PHYXS_WS != MC_CMD_LOOPBACK_PHYXS_WS);
396
397 rc = efx_mcdi_loopback_modes(efx, &efx->loopback_modes);
398 if (rc != 0)
399 goto fail;
400 /* The MC indicates that LOOPBACK_NONE is a valid loopback mode,
401 * but by convention we don't */
402 efx->loopback_modes &= ~(1 << LOOPBACK_NONE);
403
404 /* Set the initial link mode */
405 efx_mcdi_phy_decode_link(
406 efx, &efx->link_state,
407 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED),
408 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS),
409 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL));
410
411 /* Default to Autonegotiated flow control if the PHY supports it */
412 efx->wanted_fc = EFX_FC_RX | EFX_FC_TX;
413 if (phy_data->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
414 efx->wanted_fc |= EFX_FC_AUTO;
415 efx_link_set_wanted_fc(efx, efx->wanted_fc);
416
417 return 0;
418
419fail:
420 kfree(phy_data);
421 return rc;
422}
423
424int efx_mcdi_port_reconfigure(struct efx_nic *efx)
425{
426 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
427 u32 caps = (efx->link_advertising ?
428 ethtool_to_mcdi_cap(efx->link_advertising) :
429 phy_cfg->forced_cap);
430
431 return efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx),
432 efx->loopback_mode, 0);
433}
434
435/* Verify that the forced flow control settings (!EFX_FC_AUTO) are
436 * supported by the link partner. Warn the user if this isn't the case
437 */
438static void efx_mcdi_phy_check_fcntl(struct efx_nic *efx, u32 lpa)
439{
440 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
441 u32 rmtadv;
442
443 /* The link partner capabilities are only relevant if the
444 * link supports flow control autonegotiation */
445 if (~phy_cfg->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
446 return;
447
448 /* If flow control autoneg is supported and enabled, then fine */
449 if (efx->wanted_fc & EFX_FC_AUTO)
450 return;
451
452 rmtadv = 0;
453 if (lpa & (1 << MC_CMD_PHY_CAP_PAUSE_LBN))
454 rmtadv |= ADVERTISED_Pause;
455 if (lpa & (1 << MC_CMD_PHY_CAP_ASYM_LBN))
456 rmtadv |= ADVERTISED_Asym_Pause;
457
458 if ((efx->wanted_fc & EFX_FC_TX) && rmtadv == ADVERTISED_Asym_Pause)
459 netif_err(efx, link, efx->net_dev,
460 "warning: link partner doesn't support pause frames");
461}
462
463static bool efx_mcdi_phy_poll(struct efx_nic *efx)
464{
465 struct efx_link_state old_state = efx->link_state;
466 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
467 int rc;
468
469 WARN_ON(!mutex_is_locked(&efx->mac_lock));
470
471 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
472
473 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
474 outbuf, sizeof(outbuf), NULL);
475 if (rc)
476 efx->link_state.up = false;
477 else
478 efx_mcdi_phy_decode_link(
479 efx, &efx->link_state,
480 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED),
481 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS),
482 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL));
483
484 return !efx_link_state_equal(&efx->link_state, &old_state);
485}
486
487static void efx_mcdi_phy_remove(struct efx_nic *efx)
488{
489 struct efx_mcdi_phy_data *phy_data = efx->phy_data;
490
491 efx->phy_data = NULL;
492 kfree(phy_data);
493}
494
495static void efx_mcdi_phy_get_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd)
496{
497 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
498 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
499 int rc;
500
501 ecmd->supported =
502 mcdi_to_ethtool_cap(phy_cfg->media, phy_cfg->supported_cap);
503 ecmd->advertising = efx->link_advertising;
504 ethtool_cmd_speed_set(ecmd, efx->link_state.speed);
505 ecmd->duplex = efx->link_state.fd;
506 ecmd->port = mcdi_to_ethtool_media(phy_cfg->media);
507 ecmd->phy_address = phy_cfg->port;
508 ecmd->transceiver = XCVR_INTERNAL;
509 ecmd->autoneg = !!(efx->link_advertising & ADVERTISED_Autoneg);
510 ecmd->mdio_support = (efx->mdio.mode_support &
511 (MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22));
512
513 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
514 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
515 outbuf, sizeof(outbuf), NULL);
516 if (rc)
517 return;
518 ecmd->lp_advertising =
519 mcdi_to_ethtool_cap(phy_cfg->media,
520 MCDI_DWORD(outbuf, GET_LINK_OUT_LP_CAP));
521}
522
523static int efx_mcdi_phy_set_settings(struct efx_nic *efx, struct ethtool_cmd *ecmd)
524{
525 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
526 u32 caps;
527 int rc;
528
529 if (ecmd->autoneg) {
530 caps = (ethtool_to_mcdi_cap(ecmd->advertising) |
531 1 << MC_CMD_PHY_CAP_AN_LBN);
532 } else if (ecmd->duplex) {
533 switch (ethtool_cmd_speed(ecmd)) {
534 case 10: caps = 1 << MC_CMD_PHY_CAP_10FDX_LBN; break;
535 case 100: caps = 1 << MC_CMD_PHY_CAP_100FDX_LBN; break;
536 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000FDX_LBN; break;
537 case 10000: caps = 1 << MC_CMD_PHY_CAP_10000FDX_LBN; break;
538 case 40000: caps = 1 << MC_CMD_PHY_CAP_40000FDX_LBN; break;
539 default: return -EINVAL;
540 }
541 } else {
542 switch (ethtool_cmd_speed(ecmd)) {
543 case 10: caps = 1 << MC_CMD_PHY_CAP_10HDX_LBN; break;
544 case 100: caps = 1 << MC_CMD_PHY_CAP_100HDX_LBN; break;
545 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000HDX_LBN; break;
546 default: return -EINVAL;
547 }
548 }
549
550 rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx),
551 efx->loopback_mode, 0);
552 if (rc)
553 return rc;
554
555 if (ecmd->autoneg) {
556 efx_link_set_advertising(
557 efx, ecmd->advertising | ADVERTISED_Autoneg);
558 phy_cfg->forced_cap = 0;
559 } else {
560 efx_link_set_advertising(efx, 0);
561 phy_cfg->forced_cap = caps;
562 }
563 return 0;
564}
565
566static int efx_mcdi_phy_test_alive(struct efx_nic *efx)
567{
568 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_STATE_OUT_LEN);
569 size_t outlen;
570 int rc;
571
572 BUILD_BUG_ON(MC_CMD_GET_PHY_STATE_IN_LEN != 0);
573
574 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_STATE, NULL, 0,
575 outbuf, sizeof(outbuf), &outlen);
576 if (rc)
577 return rc;
578
579 if (outlen < MC_CMD_GET_PHY_STATE_OUT_LEN)
580 return -EIO;
581 if (MCDI_DWORD(outbuf, GET_PHY_STATE_OUT_STATE) != MC_CMD_PHY_STATE_OK)
582 return -EINVAL;
583
584 return 0;
585}
586
587static const char *const mcdi_sft9001_cable_diag_names[] = {
588 "cable.pairA.length",
589 "cable.pairB.length",
590 "cable.pairC.length",
591 "cable.pairD.length",
592 "cable.pairA.status",
593 "cable.pairB.status",
594 "cable.pairC.status",
595 "cable.pairD.status",
596};
597
598static int efx_mcdi_bist(struct efx_nic *efx, unsigned int bist_mode,
599 int *results)
600{
601 unsigned int retry, i, count = 0;
602 size_t outlen;
603 u32 status;
604 MCDI_DECLARE_BUF(inbuf, MC_CMD_START_BIST_IN_LEN);
605 MCDI_DECLARE_BUF(outbuf, MC_CMD_POLL_BIST_OUT_SFT9001_LEN);
606 u8 *ptr;
607 int rc;
608
609 BUILD_BUG_ON(MC_CMD_START_BIST_OUT_LEN != 0);
610 MCDI_SET_DWORD(inbuf, START_BIST_IN_TYPE, bist_mode);
611 rc = efx_mcdi_rpc(efx, MC_CMD_START_BIST,
612 inbuf, MC_CMD_START_BIST_IN_LEN, NULL, 0, NULL);
613 if (rc)
614 goto out;
615
616 /* Wait up to 10s for BIST to finish */
617 for (retry = 0; retry < 100; ++retry) {
618 BUILD_BUG_ON(MC_CMD_POLL_BIST_IN_LEN != 0);
619 rc = efx_mcdi_rpc(efx, MC_CMD_POLL_BIST, NULL, 0,
620 outbuf, sizeof(outbuf), &outlen);
621 if (rc)
622 goto out;
623
624 status = MCDI_DWORD(outbuf, POLL_BIST_OUT_RESULT);
625 if (status != MC_CMD_POLL_BIST_RUNNING)
626 goto finished;
627
628 msleep(100);
629 }
630
631 rc = -ETIMEDOUT;
632 goto out;
633
634finished:
635 results[count++] = (status == MC_CMD_POLL_BIST_PASSED) ? 1 : -1;
636
637 /* SFT9001 specific cable diagnostics output */
638 if (efx->phy_type == PHY_TYPE_SFT9001B &&
639 (bist_mode == MC_CMD_PHY_BIST_CABLE_SHORT ||
640 bist_mode == MC_CMD_PHY_BIST_CABLE_LONG)) {
641 ptr = MCDI_PTR(outbuf, POLL_BIST_OUT_SFT9001_CABLE_LENGTH_A);
642 if (status == MC_CMD_POLL_BIST_PASSED &&
643 outlen >= MC_CMD_POLL_BIST_OUT_SFT9001_LEN) {
644 for (i = 0; i < 8; i++) {
645 results[count + i] =
646 EFX_DWORD_FIELD(((efx_dword_t *)ptr)[i],
647 EFX_DWORD_0);
648 }
649 }
650 count += 8;
651 }
652 rc = count;
653
654out:
655 return rc;
656}
657
658static int efx_mcdi_phy_run_tests(struct efx_nic *efx, int *results,
659 unsigned flags)
660{
661 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
662 u32 mode;
663 int rc;
664
665 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) {
666 rc = efx_mcdi_bist(efx, MC_CMD_PHY_BIST, results);
667 if (rc < 0)
668 return rc;
669
670 results += rc;
671 }
672
673 /* If we support both LONG and SHORT, then run each in response to
674 * break or not. Otherwise, run the one we support */
675 mode = 0;
676 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN)) {
677 if ((flags & ETH_TEST_FL_OFFLINE) &&
678 (phy_cfg->flags &
679 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN)))
680 mode = MC_CMD_PHY_BIST_CABLE_LONG;
681 else
682 mode = MC_CMD_PHY_BIST_CABLE_SHORT;
683 } else if (phy_cfg->flags &
684 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))
685 mode = MC_CMD_PHY_BIST_CABLE_LONG;
686
687 if (mode != 0) {
688 rc = efx_mcdi_bist(efx, mode, results);
689 if (rc < 0)
690 return rc;
691 results += rc;
692 }
693
694 return 0;
695}
696
697static const char *efx_mcdi_phy_test_name(struct efx_nic *efx,
698 unsigned int index)
699{
700 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
701
702 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) {
703 if (index == 0)
704 return "bist";
705 --index;
706 }
707
708 if (phy_cfg->flags & ((1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN) |
709 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))) {
710 if (index == 0)
711 return "cable";
712 --index;
713
714 if (efx->phy_type == PHY_TYPE_SFT9001B) {
715 if (index < ARRAY_SIZE(mcdi_sft9001_cable_diag_names))
716 return mcdi_sft9001_cable_diag_names[index];
717 index -= ARRAY_SIZE(mcdi_sft9001_cable_diag_names);
718 }
719 }
720
721 return NULL;
722}
723
724#define SFP_PAGE_SIZE 128
725#define SFP_NUM_PAGES 2
726static int efx_mcdi_phy_get_module_eeprom(struct efx_nic *efx,
727 struct ethtool_eeprom *ee, u8 *data)
728{
729 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_MEDIA_INFO_OUT_LENMAX);
730 MCDI_DECLARE_BUF(inbuf, MC_CMD_GET_PHY_MEDIA_INFO_IN_LEN);
731 size_t outlen;
732 int rc;
733 unsigned int payload_len;
734 unsigned int space_remaining = ee->len;
735 unsigned int page;
736 unsigned int page_off;
737 unsigned int to_copy;
738 u8 *user_data = data;
739
740 BUILD_BUG_ON(SFP_PAGE_SIZE * SFP_NUM_PAGES != ETH_MODULE_SFF_8079_LEN);
741
742 page_off = ee->offset % SFP_PAGE_SIZE;
743 page = ee->offset / SFP_PAGE_SIZE;
744
745 while (space_remaining && (page < SFP_NUM_PAGES)) {
746 MCDI_SET_DWORD(inbuf, GET_PHY_MEDIA_INFO_IN_PAGE, page);
747
748 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PHY_MEDIA_INFO,
749 inbuf, sizeof(inbuf),
750 outbuf, sizeof(outbuf),
751 &outlen);
752 if (rc)
753 return rc;
754
755 if (outlen < (MC_CMD_GET_PHY_MEDIA_INFO_OUT_DATA_OFST +
756 SFP_PAGE_SIZE))
757 return -EIO;
758
759 payload_len = MCDI_DWORD(outbuf,
760 GET_PHY_MEDIA_INFO_OUT_DATALEN);
761 if (payload_len != SFP_PAGE_SIZE)
762 return -EIO;
763
764 /* Copy as much as we can into data */
765 payload_len -= page_off;
766 to_copy = (space_remaining < payload_len) ?
767 space_remaining : payload_len;
768
769 memcpy(user_data,
770 MCDI_PTR(outbuf, GET_PHY_MEDIA_INFO_OUT_DATA) + page_off,
771 to_copy);
772
773 space_remaining -= to_copy;
774 user_data += to_copy;
775 page_off = 0;
776 page++;
777 }
778
779 return 0;
780}
781
782static int efx_mcdi_phy_get_module_info(struct efx_nic *efx,
783 struct ethtool_modinfo *modinfo)
784{
785 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
786
787 switch (phy_cfg->media) {
788 case MC_CMD_MEDIA_SFP_PLUS:
789 modinfo->type = ETH_MODULE_SFF_8079;
790 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
791 return 0;
792 default:
793 return -EOPNOTSUPP;
794 }
795}
796
797static const struct efx_phy_operations efx_mcdi_phy_ops = {
798 .probe = efx_mcdi_phy_probe,
799 .init = efx_port_dummy_op_int,
800 .reconfigure = efx_mcdi_port_reconfigure,
801 .poll = efx_mcdi_phy_poll,
802 .fini = efx_port_dummy_op_void,
803 .remove = efx_mcdi_phy_remove,
804 .get_settings = efx_mcdi_phy_get_settings,
805 .set_settings = efx_mcdi_phy_set_settings,
806 .test_alive = efx_mcdi_phy_test_alive,
807 .run_tests = efx_mcdi_phy_run_tests,
808 .test_name = efx_mcdi_phy_test_name,
809 .get_module_eeprom = efx_mcdi_phy_get_module_eeprom,
810 .get_module_info = efx_mcdi_phy_get_module_info,
811};
812
813u32 efx_mcdi_phy_get_caps(struct efx_nic *efx)
814{
815 struct efx_mcdi_phy_data *phy_data = efx->phy_data;
816
817 return phy_data->supported_cap;
818}
819
820static unsigned int efx_mcdi_event_link_speed[] = {
821 [MCDI_EVENT_LINKCHANGE_SPEED_100M] = 100,
822 [MCDI_EVENT_LINKCHANGE_SPEED_1G] = 1000,
823 [MCDI_EVENT_LINKCHANGE_SPEED_10G] = 10000,
824 [MCDI_EVENT_LINKCHANGE_SPEED_40G] = 40000,
825};
826
827void efx_mcdi_process_link_change(struct efx_nic *efx, efx_qword_t *ev)
828{
829 u32 flags, fcntl, speed, lpa;
830
831 speed = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_SPEED);
832 EFX_BUG_ON_PARANOID(speed >= ARRAY_SIZE(efx_mcdi_event_link_speed));
833 speed = efx_mcdi_event_link_speed[speed];
834
835 flags = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LINK_FLAGS);
836 fcntl = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_FCNTL);
837 lpa = EFX_QWORD_FIELD(*ev, MCDI_EVENT_LINKCHANGE_LP_CAP);
838
839 /* efx->link_state is only modified by efx_mcdi_phy_get_link(),
840 * which is only run after flushing the event queues. Therefore, it
841 * is safe to modify the link state outside of the mac_lock here.
842 */
843 efx_mcdi_phy_decode_link(efx, &efx->link_state, speed, flags, fcntl);
844
845 efx_mcdi_phy_check_fcntl(efx, lpa);
846
847 efx_link_status_changed(efx);
848}
849
850int efx_mcdi_set_mac(struct efx_nic *efx)
851{
852 u32 fcntl;
853 MCDI_DECLARE_BUF(cmdbytes, MC_CMD_SET_MAC_IN_LEN);
854
855 BUILD_BUG_ON(MC_CMD_SET_MAC_OUT_LEN != 0);
856
857 ether_addr_copy(MCDI_PTR(cmdbytes, SET_MAC_IN_ADDR),
858 efx->net_dev->dev_addr);
859
860 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_MTU,
861 EFX_MAX_FRAME_LEN(efx->net_dev->mtu));
862 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_DRAIN, 0);
863
864 /* Set simple MAC filter for Siena */
865 MCDI_POPULATE_DWORD_1(cmdbytes, SET_MAC_IN_REJECT,
866 SET_MAC_IN_REJECT_UNCST, efx->unicast_filter);
867
868 switch (efx->wanted_fc) {
869 case EFX_FC_RX | EFX_FC_TX:
870 fcntl = MC_CMD_FCNTL_BIDIR;
871 break;
872 case EFX_FC_RX:
873 fcntl = MC_CMD_FCNTL_RESPOND;
874 break;
875 default:
876 fcntl = MC_CMD_FCNTL_OFF;
877 break;
878 }
879 if (efx->wanted_fc & EFX_FC_AUTO)
880 fcntl = MC_CMD_FCNTL_AUTO;
881 if (efx->fc_disable)
882 fcntl = MC_CMD_FCNTL_OFF;
883
884 MCDI_SET_DWORD(cmdbytes, SET_MAC_IN_FCNTL, fcntl);
885
886 return efx_mcdi_rpc(efx, MC_CMD_SET_MAC, cmdbytes, sizeof(cmdbytes),
887 NULL, 0, NULL);
888}
889
890bool efx_mcdi_mac_check_fault(struct efx_nic *efx)
891{
892 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
893 size_t outlength;
894 int rc;
895
896 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
897
898 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
899 outbuf, sizeof(outbuf), &outlength);
900 if (rc)
901 return true;
902
903 return MCDI_DWORD(outbuf, GET_LINK_OUT_MAC_FAULT) != 0;
904}
905
906enum efx_stats_action {
907 EFX_STATS_ENABLE,
908 EFX_STATS_DISABLE,
909 EFX_STATS_PULL,
910};
911
912static int efx_mcdi_mac_stats(struct efx_nic *efx,
913 enum efx_stats_action action, int clear)
914{
915 MCDI_DECLARE_BUF(inbuf, MC_CMD_MAC_STATS_IN_LEN);
916 int rc;
917 int change = action == EFX_STATS_PULL ? 0 : 1;
918 int enable = action == EFX_STATS_ENABLE ? 1 : 0;
919 int period = action == EFX_STATS_ENABLE ? 1000 : 0;
920 dma_addr_t dma_addr = efx->stats_buffer.dma_addr;
921 u32 dma_len = action != EFX_STATS_DISABLE ?
922 MC_CMD_MAC_NSTATS * sizeof(u64) : 0;
923
924 BUILD_BUG_ON(MC_CMD_MAC_STATS_OUT_DMA_LEN != 0);
925
926 MCDI_SET_QWORD(inbuf, MAC_STATS_IN_DMA_ADDR, dma_addr);
927 MCDI_POPULATE_DWORD_7(inbuf, MAC_STATS_IN_CMD,
928 MAC_STATS_IN_DMA, !!enable,
929 MAC_STATS_IN_CLEAR, clear,
930 MAC_STATS_IN_PERIODIC_CHANGE, change,
931 MAC_STATS_IN_PERIODIC_ENABLE, enable,
932 MAC_STATS_IN_PERIODIC_CLEAR, 0,
933 MAC_STATS_IN_PERIODIC_NOEVENT, 1,
934 MAC_STATS_IN_PERIOD_MS, period);
935 MCDI_SET_DWORD(inbuf, MAC_STATS_IN_DMA_LEN, dma_len);
936
937 rc = efx_mcdi_rpc(efx, MC_CMD_MAC_STATS, inbuf, sizeof(inbuf),
938 NULL, 0, NULL);
939 return rc;
940}
941
942void efx_mcdi_mac_start_stats(struct efx_nic *efx)
943{
944 __le64 *dma_stats = efx->stats_buffer.addr;
945
946 dma_stats[MC_CMD_MAC_GENERATION_END] = EFX_MC_STATS_GENERATION_INVALID;
947
948 efx_mcdi_mac_stats(efx, EFX_STATS_ENABLE, 0);
949}
950
951void efx_mcdi_mac_stop_stats(struct efx_nic *efx)
952{
953 efx_mcdi_mac_stats(efx, EFX_STATS_DISABLE, 0);
954}
955
956#define EFX_MAC_STATS_WAIT_US 100
957#define EFX_MAC_STATS_WAIT_ATTEMPTS 10
958
959void efx_mcdi_mac_pull_stats(struct efx_nic *efx)
960{
961 __le64 *dma_stats = efx->stats_buffer.addr;
962 int attempts = EFX_MAC_STATS_WAIT_ATTEMPTS;
963
964 dma_stats[MC_CMD_MAC_GENERATION_END] = EFX_MC_STATS_GENERATION_INVALID;
965 efx_mcdi_mac_stats(efx, EFX_STATS_PULL, 0);
966
967 while (dma_stats[MC_CMD_MAC_GENERATION_END] ==
968 EFX_MC_STATS_GENERATION_INVALID &&
969 attempts-- != 0)
970 udelay(EFX_MAC_STATS_WAIT_US);
971}
972
973int efx_mcdi_port_probe(struct efx_nic *efx)
974{
975 int rc;
976
977 /* Hook in PHY operations table */
978 efx->phy_op = &efx_mcdi_phy_ops;
979
980 /* Set up MDIO structure for PHY */
981 efx->mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
982 efx->mdio.mdio_read = efx_mcdi_mdio_read;
983 efx->mdio.mdio_write = efx_mcdi_mdio_write;
984
985 /* Fill out MDIO structure, loopback modes, and initial link state */
986 rc = efx->phy_op->probe(efx);
987 if (rc != 0)
988 return rc;
989
990 /* Allocate buffer for stats */
991 rc = efx_nic_alloc_buffer(efx, &efx->stats_buffer,
992 MC_CMD_MAC_NSTATS * sizeof(u64), GFP_KERNEL);
993 if (rc)
994 return rc;
995 netif_dbg(efx, probe, efx->net_dev,
996 "stats buffer at %llx (virt %p phys %llx)\n",
997 (u64)efx->stats_buffer.dma_addr,
998 efx->stats_buffer.addr,
999 (u64)virt_to_phys(efx->stats_buffer.addr));
1000
1001 efx_mcdi_mac_stats(efx, EFX_STATS_DISABLE, 1);
1002
1003 return 0;
1004}
1005
1006void efx_mcdi_port_remove(struct efx_nic *efx)
1007{
1008 efx->phy_op->remove(efx);
1009 efx_nic_free_buffer(efx, &efx->stats_buffer);
1010}
1011
1012/* Get physical port number (EF10 only; on Siena it is same as PF number) */
1013int efx_mcdi_port_get_number(struct efx_nic *efx)
1014{
1015 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PORT_ASSIGNMENT_OUT_LEN);
1016 int rc;
1017
1018 rc = efx_mcdi_rpc(efx, MC_CMD_GET_PORT_ASSIGNMENT, NULL, 0,
1019 outbuf, sizeof(outbuf), NULL);
1020 if (rc)
1021 return rc;
1022
1023 return MCDI_DWORD(outbuf, GET_PORT_ASSIGNMENT_OUT_PORT);
1024}