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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// 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 = 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 = 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
73static int efx_mcdi_phy_probe(struct efx_nic *efx)
74{
75 struct efx_mcdi_phy_data *phy_data;
76 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
77 u32 caps;
78 int rc;
79
80 /* Initialise and populate phy_data */
81 phy_data = kzalloc(sizeof(*phy_data), GFP_KERNEL);
82 if (phy_data == NULL)
83 return -ENOMEM;
84
85 rc = efx_mcdi_get_phy_cfg(efx, phy_data);
86 if (rc != 0)
87 goto fail;
88
89 /* Read initial link advertisement */
90 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
91 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
92 outbuf, sizeof(outbuf), NULL);
93 if (rc)
94 goto fail;
95
96 /* Fill out nic state */
97 efx->phy_data = phy_data;
98 efx->phy_type = phy_data->type;
99
100 efx->mdio_bus = phy_data->channel;
101 efx->mdio.prtad = phy_data->port;
102 efx->mdio.mmds = phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22);
103 efx->mdio.mode_support = 0;
104 if (phy_data->mmd_mask & (1 << MC_CMD_MMD_CLAUSE22))
105 efx->mdio.mode_support |= MDIO_SUPPORTS_C22;
106 if (phy_data->mmd_mask & ~(1 << MC_CMD_MMD_CLAUSE22))
107 efx->mdio.mode_support |= MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
108
109 caps = MCDI_DWORD(outbuf, GET_LINK_OUT_CAP);
110 if (caps & (1 << MC_CMD_PHY_CAP_AN_LBN))
111 mcdi_to_ethtool_linkset(phy_data->media, caps,
112 efx->link_advertising);
113 else
114 phy_data->forced_cap = caps;
115
116 /* Assert that we can map efx -> mcdi loopback modes */
117 BUILD_BUG_ON(LOOPBACK_NONE != MC_CMD_LOOPBACK_NONE);
118 BUILD_BUG_ON(LOOPBACK_DATA != MC_CMD_LOOPBACK_DATA);
119 BUILD_BUG_ON(LOOPBACK_GMAC != MC_CMD_LOOPBACK_GMAC);
120 BUILD_BUG_ON(LOOPBACK_XGMII != MC_CMD_LOOPBACK_XGMII);
121 BUILD_BUG_ON(LOOPBACK_XGXS != MC_CMD_LOOPBACK_XGXS);
122 BUILD_BUG_ON(LOOPBACK_XAUI != MC_CMD_LOOPBACK_XAUI);
123 BUILD_BUG_ON(LOOPBACK_GMII != MC_CMD_LOOPBACK_GMII);
124 BUILD_BUG_ON(LOOPBACK_SGMII != MC_CMD_LOOPBACK_SGMII);
125 BUILD_BUG_ON(LOOPBACK_XGBR != MC_CMD_LOOPBACK_XGBR);
126 BUILD_BUG_ON(LOOPBACK_XFI != MC_CMD_LOOPBACK_XFI);
127 BUILD_BUG_ON(LOOPBACK_XAUI_FAR != MC_CMD_LOOPBACK_XAUI_FAR);
128 BUILD_BUG_ON(LOOPBACK_GMII_FAR != MC_CMD_LOOPBACK_GMII_FAR);
129 BUILD_BUG_ON(LOOPBACK_SGMII_FAR != MC_CMD_LOOPBACK_SGMII_FAR);
130 BUILD_BUG_ON(LOOPBACK_XFI_FAR != MC_CMD_LOOPBACK_XFI_FAR);
131 BUILD_BUG_ON(LOOPBACK_GPHY != MC_CMD_LOOPBACK_GPHY);
132 BUILD_BUG_ON(LOOPBACK_PHYXS != MC_CMD_LOOPBACK_PHYXS);
133 BUILD_BUG_ON(LOOPBACK_PCS != MC_CMD_LOOPBACK_PCS);
134 BUILD_BUG_ON(LOOPBACK_PMAPMD != MC_CMD_LOOPBACK_PMAPMD);
135 BUILD_BUG_ON(LOOPBACK_XPORT != MC_CMD_LOOPBACK_XPORT);
136 BUILD_BUG_ON(LOOPBACK_XGMII_WS != MC_CMD_LOOPBACK_XGMII_WS);
137 BUILD_BUG_ON(LOOPBACK_XAUI_WS != MC_CMD_LOOPBACK_XAUI_WS);
138 BUILD_BUG_ON(LOOPBACK_XAUI_WS_FAR != MC_CMD_LOOPBACK_XAUI_WS_FAR);
139 BUILD_BUG_ON(LOOPBACK_XAUI_WS_NEAR != MC_CMD_LOOPBACK_XAUI_WS_NEAR);
140 BUILD_BUG_ON(LOOPBACK_GMII_WS != MC_CMD_LOOPBACK_GMII_WS);
141 BUILD_BUG_ON(LOOPBACK_XFI_WS != MC_CMD_LOOPBACK_XFI_WS);
142 BUILD_BUG_ON(LOOPBACK_XFI_WS_FAR != MC_CMD_LOOPBACK_XFI_WS_FAR);
143 BUILD_BUG_ON(LOOPBACK_PHYXS_WS != MC_CMD_LOOPBACK_PHYXS_WS);
144
145 rc = efx_mcdi_loopback_modes(efx, &efx->loopback_modes);
146 if (rc != 0)
147 goto fail;
148 /* The MC indicates that LOOPBACK_NONE is a valid loopback mode,
149 * but by convention we don't */
150 efx->loopback_modes &= ~(1 << LOOPBACK_NONE);
151
152 /* Set the initial link mode */
153 efx_mcdi_phy_decode_link(
154 efx, &efx->link_state,
155 MCDI_DWORD(outbuf, GET_LINK_OUT_LINK_SPEED),
156 MCDI_DWORD(outbuf, GET_LINK_OUT_FLAGS),
157 MCDI_DWORD(outbuf, GET_LINK_OUT_FCNTL));
158
159 /* Record the initial FEC configuration (or nearest approximation
160 * representable in the ethtool configuration space)
161 */
162 efx->fec_config = mcdi_fec_caps_to_ethtool(caps,
163 efx->link_state.speed == 25000 ||
164 efx->link_state.speed == 50000);
165
166 /* Default to Autonegotiated flow control if the PHY supports it */
167 efx->wanted_fc = EFX_FC_RX | EFX_FC_TX;
168 if (phy_data->supported_cap & (1 << MC_CMD_PHY_CAP_AN_LBN))
169 efx->wanted_fc |= EFX_FC_AUTO;
170 efx_link_set_wanted_fc(efx, efx->wanted_fc);
171
172 return 0;
173
174fail:
175 kfree(phy_data);
176 return rc;
177}
178
179static void efx_mcdi_phy_remove(struct efx_nic *efx)
180{
181 struct efx_mcdi_phy_data *phy_data = efx->phy_data;
182
183 efx->phy_data = NULL;
184 kfree(phy_data);
185}
186
187static void efx_mcdi_phy_get_link_ksettings(struct efx_nic *efx,
188 struct ethtool_link_ksettings *cmd)
189{
190 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
191 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
192 int rc;
193
194 cmd->base.speed = efx->link_state.speed;
195 cmd->base.duplex = efx->link_state.fd;
196 cmd->base.port = mcdi_to_ethtool_media(phy_cfg->media);
197 cmd->base.phy_address = phy_cfg->port;
198 cmd->base.autoneg = !!(efx->link_advertising[0] & ADVERTISED_Autoneg);
199 cmd->base.mdio_support = (efx->mdio.mode_support &
200 (MDIO_SUPPORTS_C45 | MDIO_SUPPORTS_C22));
201
202 mcdi_to_ethtool_linkset(phy_cfg->media, phy_cfg->supported_cap,
203 cmd->link_modes.supported);
204 memcpy(cmd->link_modes.advertising, efx->link_advertising,
205 sizeof(__ETHTOOL_DECLARE_LINK_MODE_MASK()));
206
207 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
208 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
209 outbuf, sizeof(outbuf), NULL);
210 if (rc)
211 return;
212 mcdi_to_ethtool_linkset(phy_cfg->media,
213 MCDI_DWORD(outbuf, GET_LINK_OUT_LP_CAP),
214 cmd->link_modes.lp_advertising);
215}
216
217static int
218efx_mcdi_phy_set_link_ksettings(struct efx_nic *efx,
219 const struct ethtool_link_ksettings *cmd)
220{
221 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
222 u32 caps;
223 int rc;
224
225 if (cmd->base.autoneg) {
226 caps = (ethtool_linkset_to_mcdi_cap(cmd->link_modes.advertising) |
227 1 << MC_CMD_PHY_CAP_AN_LBN);
228 } else if (cmd->base.duplex) {
229 switch (cmd->base.speed) {
230 case 10: caps = 1 << MC_CMD_PHY_CAP_10FDX_LBN; break;
231 case 100: caps = 1 << MC_CMD_PHY_CAP_100FDX_LBN; break;
232 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000FDX_LBN; break;
233 case 10000: caps = 1 << MC_CMD_PHY_CAP_10000FDX_LBN; break;
234 case 40000: caps = 1 << MC_CMD_PHY_CAP_40000FDX_LBN; break;
235 case 100000: caps = 1 << MC_CMD_PHY_CAP_100000FDX_LBN; break;
236 case 25000: caps = 1 << MC_CMD_PHY_CAP_25000FDX_LBN; break;
237 case 50000: caps = 1 << MC_CMD_PHY_CAP_50000FDX_LBN; break;
238 default: return -EINVAL;
239 }
240 } else {
241 switch (cmd->base.speed) {
242 case 10: caps = 1 << MC_CMD_PHY_CAP_10HDX_LBN; break;
243 case 100: caps = 1 << MC_CMD_PHY_CAP_100HDX_LBN; break;
244 case 1000: caps = 1 << MC_CMD_PHY_CAP_1000HDX_LBN; break;
245 default: return -EINVAL;
246 }
247 }
248
249 caps |= ethtool_fec_caps_to_mcdi(efx->fec_config);
250
251 rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx),
252 efx->loopback_mode, 0);
253 if (rc)
254 return rc;
255
256 if (cmd->base.autoneg) {
257 efx_link_set_advertising(efx, cmd->link_modes.advertising);
258 phy_cfg->forced_cap = 0;
259 } else {
260 efx_link_clear_advertising(efx);
261 phy_cfg->forced_cap = caps;
262 }
263 return 0;
264}
265
266static int efx_mcdi_phy_set_fecparam(struct efx_nic *efx,
267 const struct ethtool_fecparam *fec)
268{
269 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
270 u32 caps;
271 int rc;
272
273 /* Work out what efx_mcdi_phy_set_link_ksettings() would produce from
274 * saved advertising bits
275 */
276 if (test_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, efx->link_advertising))
277 caps = (ethtool_linkset_to_mcdi_cap(efx->link_advertising) |
278 1 << MC_CMD_PHY_CAP_AN_LBN);
279 else
280 caps = phy_cfg->forced_cap;
281
282 caps |= ethtool_fec_caps_to_mcdi(fec->fec);
283 rc = efx_mcdi_set_link(efx, caps, efx_get_mcdi_phy_flags(efx),
284 efx->loopback_mode, 0);
285 if (rc)
286 return rc;
287
288 /* Record the new FEC setting for subsequent set_link calls */
289 efx->fec_config = fec->fec;
290 return 0;
291}
292
293static const char *const mcdi_sft9001_cable_diag_names[] = {
294 "cable.pairA.length",
295 "cable.pairB.length",
296 "cable.pairC.length",
297 "cable.pairD.length",
298 "cable.pairA.status",
299 "cable.pairB.status",
300 "cable.pairC.status",
301 "cable.pairD.status",
302};
303
304static int efx_mcdi_bist(struct efx_nic *efx, unsigned int bist_mode,
305 int *results)
306{
307 unsigned int retry, i, count = 0;
308 size_t outlen;
309 u32 status;
310 MCDI_DECLARE_BUF(inbuf, MC_CMD_START_BIST_IN_LEN);
311 MCDI_DECLARE_BUF(outbuf, MC_CMD_POLL_BIST_OUT_SFT9001_LEN);
312 u8 *ptr;
313 int rc;
314
315 BUILD_BUG_ON(MC_CMD_START_BIST_OUT_LEN != 0);
316 MCDI_SET_DWORD(inbuf, START_BIST_IN_TYPE, bist_mode);
317 rc = efx_mcdi_rpc(efx, MC_CMD_START_BIST,
318 inbuf, MC_CMD_START_BIST_IN_LEN, NULL, 0, NULL);
319 if (rc)
320 goto out;
321
322 /* Wait up to 10s for BIST to finish */
323 for (retry = 0; retry < 100; ++retry) {
324 BUILD_BUG_ON(MC_CMD_POLL_BIST_IN_LEN != 0);
325 rc = efx_mcdi_rpc(efx, MC_CMD_POLL_BIST, NULL, 0,
326 outbuf, sizeof(outbuf), &outlen);
327 if (rc)
328 goto out;
329
330 status = MCDI_DWORD(outbuf, POLL_BIST_OUT_RESULT);
331 if (status != MC_CMD_POLL_BIST_RUNNING)
332 goto finished;
333
334 msleep(100);
335 }
336
337 rc = -ETIMEDOUT;
338 goto out;
339
340finished:
341 results[count++] = (status == MC_CMD_POLL_BIST_PASSED) ? 1 : -1;
342
343 /* SFT9001 specific cable diagnostics output */
344 if (efx->phy_type == PHY_TYPE_SFT9001B &&
345 (bist_mode == MC_CMD_PHY_BIST_CABLE_SHORT ||
346 bist_mode == MC_CMD_PHY_BIST_CABLE_LONG)) {
347 ptr = MCDI_PTR(outbuf, POLL_BIST_OUT_SFT9001_CABLE_LENGTH_A);
348 if (status == MC_CMD_POLL_BIST_PASSED &&
349 outlen >= MC_CMD_POLL_BIST_OUT_SFT9001_LEN) {
350 for (i = 0; i < 8; i++) {
351 results[count + i] =
352 EFX_DWORD_FIELD(((efx_dword_t *)ptr)[i],
353 EFX_DWORD_0);
354 }
355 }
356 count += 8;
357 }
358 rc = count;
359
360out:
361 return rc;
362}
363
364static int efx_mcdi_phy_run_tests(struct efx_nic *efx, int *results,
365 unsigned flags)
366{
367 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
368 u32 mode;
369 int rc;
370
371 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) {
372 rc = efx_mcdi_bist(efx, MC_CMD_PHY_BIST, results);
373 if (rc < 0)
374 return rc;
375
376 results += rc;
377 }
378
379 /* If we support both LONG and SHORT, then run each in response to
380 * break or not. Otherwise, run the one we support */
381 mode = 0;
382 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN)) {
383 if ((flags & ETH_TEST_FL_OFFLINE) &&
384 (phy_cfg->flags &
385 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN)))
386 mode = MC_CMD_PHY_BIST_CABLE_LONG;
387 else
388 mode = MC_CMD_PHY_BIST_CABLE_SHORT;
389 } else if (phy_cfg->flags &
390 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))
391 mode = MC_CMD_PHY_BIST_CABLE_LONG;
392
393 if (mode != 0) {
394 rc = efx_mcdi_bist(efx, mode, results);
395 if (rc < 0)
396 return rc;
397 results += rc;
398 }
399
400 return 0;
401}
402
403static const char *efx_mcdi_phy_test_name(struct efx_nic *efx,
404 unsigned int index)
405{
406 struct efx_mcdi_phy_data *phy_cfg = efx->phy_data;
407
408 if (phy_cfg->flags & (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_LBN)) {
409 if (index == 0)
410 return "bist";
411 --index;
412 }
413
414 if (phy_cfg->flags & ((1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_SHORT_LBN) |
415 (1 << MC_CMD_GET_PHY_CFG_OUT_BIST_CABLE_LONG_LBN))) {
416 if (index == 0)
417 return "cable";
418 --index;
419
420 if (efx->phy_type == PHY_TYPE_SFT9001B) {
421 if (index < ARRAY_SIZE(mcdi_sft9001_cable_diag_names))
422 return mcdi_sft9001_cable_diag_names[index];
423 index -= ARRAY_SIZE(mcdi_sft9001_cable_diag_names);
424 }
425 }
426
427 return NULL;
428}
429
430#define SFP_PAGE_SIZE 128
431#define SFF_DIAG_TYPE_OFFSET 92
432#define SFF_DIAG_ADDR_CHANGE BIT(2)
433#define SFF_8079_NUM_PAGES 2
434#define SFF_8472_NUM_PAGES 4
435#define SFF_8436_NUM_PAGES 5
436#define SFF_DMT_LEVEL_OFFSET 94
437
438/** efx_mcdi_phy_get_module_eeprom_page() - Get a single page of module eeprom
439 * @efx: NIC context
440 * @page: EEPROM page number
441 * @data: Destination data pointer
442 * @offset: Offset in page to copy from in to data
443 * @space: Space available in data
444 *
445 * Return:
446 * >=0 - amount of data copied
447 * <0 - error
448 */
449static int efx_mcdi_phy_get_module_eeprom_page(struct efx_nic *efx,
450 unsigned int page,
451 u8 *data, ssize_t offset,
452 ssize_t space)
453{
454 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_PHY_MEDIA_INFO_OUT_LENMAX);
455 MCDI_DECLARE_BUF(inbuf, MC_CMD_GET_PHY_MEDIA_INFO_IN_LEN);
456 size_t outlen;
457 unsigned int payload_len;
458 unsigned int to_copy;
459 int rc;
460
461 if (offset > SFP_PAGE_SIZE)
462 return -EINVAL;
463
464 to_copy = min(space, SFP_PAGE_SIZE - offset);
465
466 MCDI_SET_DWORD(inbuf, GET_PHY_MEDIA_INFO_IN_PAGE, page);
467 rc = efx_mcdi_rpc_quiet(efx, MC_CMD_GET_PHY_MEDIA_INFO,
468 inbuf, sizeof(inbuf),
469 outbuf, sizeof(outbuf),
470 &outlen);
471
472 if (rc)
473 return rc;
474
475 if (outlen < (MC_CMD_GET_PHY_MEDIA_INFO_OUT_DATA_OFST +
476 SFP_PAGE_SIZE))
477 return -EIO;
478
479 payload_len = MCDI_DWORD(outbuf, GET_PHY_MEDIA_INFO_OUT_DATALEN);
480 if (payload_len != SFP_PAGE_SIZE)
481 return -EIO;
482
483 memcpy(data, MCDI_PTR(outbuf, GET_PHY_MEDIA_INFO_OUT_DATA) + offset,
484 to_copy);
485
486 return to_copy;
487}
488
489static int efx_mcdi_phy_get_module_eeprom_byte(struct efx_nic *efx,
490 unsigned int page,
491 u8 byte)
492{
493 int rc;
494 u8 data;
495
496 rc = efx_mcdi_phy_get_module_eeprom_page(efx, page, &data, byte, 1);
497 if (rc == 1)
498 return data;
499
500 return rc;
501}
502
503static int efx_mcdi_phy_diag_type(struct efx_nic *efx)
504{
505 /* Page zero of the EEPROM includes the diagnostic type at byte 92. */
506 return efx_mcdi_phy_get_module_eeprom_byte(efx, 0,
507 SFF_DIAG_TYPE_OFFSET);
508}
509
510static int efx_mcdi_phy_sff_8472_level(struct efx_nic *efx)
511{
512 /* Page zero of the EEPROM includes the DMT level at byte 94. */
513 return efx_mcdi_phy_get_module_eeprom_byte(efx, 0,
514 SFF_DMT_LEVEL_OFFSET);
515}
516
517static u32 efx_mcdi_phy_module_type(struct efx_nic *efx)
518{
519 struct efx_mcdi_phy_data *phy_data = efx->phy_data;
520
521 if (phy_data->media != MC_CMD_MEDIA_QSFP_PLUS)
522 return phy_data->media;
523
524 /* A QSFP+ NIC may actually have an SFP+ module attached.
525 * The ID is page 0, byte 0.
526 */
527 switch (efx_mcdi_phy_get_module_eeprom_byte(efx, 0, 0)) {
528 case 0x3:
529 return MC_CMD_MEDIA_SFP_PLUS;
530 case 0xc:
531 case 0xd:
532 return MC_CMD_MEDIA_QSFP_PLUS;
533 default:
534 return 0;
535 }
536}
537
538static int efx_mcdi_phy_get_module_eeprom(struct efx_nic *efx,
539 struct ethtool_eeprom *ee, u8 *data)
540{
541 int rc;
542 ssize_t space_remaining = ee->len;
543 unsigned int page_off;
544 bool ignore_missing;
545 int num_pages;
546 int page;
547
548 switch (efx_mcdi_phy_module_type(efx)) {
549 case MC_CMD_MEDIA_SFP_PLUS:
550 num_pages = efx_mcdi_phy_sff_8472_level(efx) > 0 ?
551 SFF_8472_NUM_PAGES : SFF_8079_NUM_PAGES;
552 page = 0;
553 ignore_missing = false;
554 break;
555 case MC_CMD_MEDIA_QSFP_PLUS:
556 num_pages = SFF_8436_NUM_PAGES;
557 page = -1; /* We obtain the lower page by asking for -1. */
558 ignore_missing = true; /* Ignore missing pages after page 0. */
559 break;
560 default:
561 return -EOPNOTSUPP;
562 }
563
564 page_off = ee->offset % SFP_PAGE_SIZE;
565 page += ee->offset / SFP_PAGE_SIZE;
566
567 while (space_remaining && (page < num_pages)) {
568 rc = efx_mcdi_phy_get_module_eeprom_page(efx, page,
569 data, page_off,
570 space_remaining);
571
572 if (rc > 0) {
573 space_remaining -= rc;
574 data += rc;
575 page_off = 0;
576 page++;
577 } else if (rc == 0) {
578 space_remaining = 0;
579 } else if (ignore_missing && (page > 0)) {
580 int intended_size = SFP_PAGE_SIZE - page_off;
581
582 space_remaining -= intended_size;
583 if (space_remaining < 0) {
584 space_remaining = 0;
585 } else {
586 memset(data, 0, intended_size);
587 data += intended_size;
588 page_off = 0;
589 page++;
590 rc = 0;
591 }
592 } else {
593 return rc;
594 }
595 }
596
597 return 0;
598}
599
600static int efx_mcdi_phy_get_module_info(struct efx_nic *efx,
601 struct ethtool_modinfo *modinfo)
602{
603 int sff_8472_level;
604 int diag_type;
605
606 switch (efx_mcdi_phy_module_type(efx)) {
607 case MC_CMD_MEDIA_SFP_PLUS:
608 sff_8472_level = efx_mcdi_phy_sff_8472_level(efx);
609
610 /* If we can't read the diagnostics level we have none. */
611 if (sff_8472_level < 0)
612 return -EOPNOTSUPP;
613
614 /* Check if this module requires the (unsupported) address
615 * change operation.
616 */
617 diag_type = efx_mcdi_phy_diag_type(efx);
618
619 if ((sff_8472_level == 0) ||
620 (diag_type & SFF_DIAG_ADDR_CHANGE)) {
621 modinfo->type = ETH_MODULE_SFF_8079;
622 modinfo->eeprom_len = ETH_MODULE_SFF_8079_LEN;
623 } else {
624 modinfo->type = ETH_MODULE_SFF_8472;
625 modinfo->eeprom_len = ETH_MODULE_SFF_8472_LEN;
626 }
627 break;
628
629 case MC_CMD_MEDIA_QSFP_PLUS:
630 modinfo->type = ETH_MODULE_SFF_8436;
631 modinfo->eeprom_len = ETH_MODULE_SFF_8436_LEN;
632 break;
633
634 default:
635 return -EOPNOTSUPP;
636 }
637
638 return 0;
639}
640
641static const struct efx_phy_operations efx_mcdi_phy_ops = {
642 .probe = efx_mcdi_phy_probe,
643 .init = efx_port_dummy_op_int,
644 .reconfigure = efx_mcdi_port_reconfigure,
645 .poll = efx_mcdi_phy_poll,
646 .fini = efx_port_dummy_op_void,
647 .remove = efx_mcdi_phy_remove,
648 .get_link_ksettings = efx_mcdi_phy_get_link_ksettings,
649 .set_link_ksettings = efx_mcdi_phy_set_link_ksettings,
650 .get_fecparam = efx_mcdi_phy_get_fecparam,
651 .set_fecparam = efx_mcdi_phy_set_fecparam,
652 .test_alive = efx_mcdi_phy_test_alive,
653 .run_tests = efx_mcdi_phy_run_tests,
654 .test_name = efx_mcdi_phy_test_name,
655 .get_module_eeprom = efx_mcdi_phy_get_module_eeprom,
656 .get_module_info = efx_mcdi_phy_get_module_info,
657};
658
659u32 efx_mcdi_phy_get_caps(struct efx_nic *efx)
660{
661 struct efx_mcdi_phy_data *phy_data = efx->phy_data;
662
663 return phy_data->supported_cap;
664}
665
666bool efx_mcdi_mac_check_fault(struct efx_nic *efx)
667{
668 MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_LINK_OUT_LEN);
669 size_t outlength;
670 int rc;
671
672 BUILD_BUG_ON(MC_CMD_GET_LINK_IN_LEN != 0);
673
674 rc = efx_mcdi_rpc(efx, MC_CMD_GET_LINK, NULL, 0,
675 outbuf, sizeof(outbuf), &outlength);
676 if (rc)
677 return true;
678
679 return MCDI_DWORD(outbuf, GET_LINK_OUT_MAC_FAULT) != 0;
680}
681
682int efx_mcdi_port_probe(struct efx_nic *efx)
683{
684 int rc;
685
686 /* Hook in PHY operations table */
687 efx->phy_op = &efx_mcdi_phy_ops;
688
689 /* Set up MDIO structure for PHY */
690 efx->mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22;
691 efx->mdio.mdio_read = efx_mcdi_mdio_read;
692 efx->mdio.mdio_write = efx_mcdi_mdio_write;
693
694 /* Fill out MDIO structure, loopback modes, and initial link state */
695 rc = efx->phy_op->probe(efx);
696 if (rc != 0)
697 return rc;
698
699 return efx_mcdi_mac_init_stats(efx);
700}
701
702void efx_mcdi_port_remove(struct efx_nic *efx)
703{
704 efx->phy_op->remove(efx);
705 efx_mcdi_mac_fini_stats(efx);
706}