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Linux 4.16.11
[linux/fpc-iii.git] / drivers / net / ethernet / apm / xgene / xgene_enet_sgmac.c
blobb1a83fdbefb8cbd2c47b62b807ca03c3df274f70
1 /* Applied Micro X-Gene SoC Ethernet Driver
2 *
3 * Copyright (c) 2014, Applied Micro Circuits Corporation
4 * Authors: Iyappan Subramanian <isubramanian@apm.com>
5 * Keyur Chudgar <kchudgar@apm.com>
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
19 */
20
21 #include "xgene_enet_main.h"
22 #include "xgene_enet_hw.h"
23 #include "xgene_enet_sgmac.h"
24 #include "xgene_enet_xgmac.h"
25
26 static void xgene_enet_wr_csr(struct xgene_enet_pdata *p, u32 offset, u32 val)
27 {
28 iowrite32(val, p->eth_csr_addr + offset);
29 }
30
31 static void xgene_enet_wr_clkrst_csr(struct xgene_enet_pdata *p, u32 offset,
32 u32 val)
33 {
34 iowrite32(val, p->base_addr + offset);
35 }
36
37 static void xgene_enet_wr_ring_if(struct xgene_enet_pdata *p,
38 u32 offset, u32 val)
39 {
40 iowrite32(val, p->eth_ring_if_addr + offset);
41 }
42
43 static void xgene_enet_wr_diag_csr(struct xgene_enet_pdata *p,
44 u32 offset, u32 val)
45 {
46 iowrite32(val, p->eth_diag_csr_addr + offset);
47 }
48
49 static void xgene_enet_wr_mcx_csr(struct xgene_enet_pdata *pdata,
50 u32 offset, u32 val)
51 {
52 void __iomem *addr = pdata->mcx_mac_csr_addr + offset;
53
54 iowrite32(val, addr);
55 }
56
57 static u32 xgene_enet_rd_csr(struct xgene_enet_pdata *p, u32 offset)
58 {
59 return ioread32(p->eth_csr_addr + offset);
60 }
61
62 static u32 xgene_enet_rd_diag_csr(struct xgene_enet_pdata *p, u32 offset)
63 {
64 return ioread32(p->eth_diag_csr_addr + offset);
65 }
66
67 static u32 xgene_enet_rd_mcx_csr(struct xgene_enet_pdata *p, u32 offset)
68 {
69 return ioread32(p->mcx_mac_csr_addr + offset);
70 }
71
72 static int xgene_enet_ecc_init(struct xgene_enet_pdata *p)
73 {
74 struct net_device *ndev = p->ndev;
75 u32 data, shutdown;
76 int i = 0;
77
78 shutdown = xgene_enet_rd_diag_csr(p, ENET_CFG_MEM_RAM_SHUTDOWN_ADDR);
79 data = xgene_enet_rd_diag_csr(p, ENET_BLOCK_MEM_RDY_ADDR);
80
81 if (!shutdown && data == ~0U) {
82 netdev_dbg(ndev, "+ ecc_init done, skipping\n");
83 return 0;
84 }
85
86 xgene_enet_wr_diag_csr(p, ENET_CFG_MEM_RAM_SHUTDOWN_ADDR, 0);
87 do {
88 usleep_range(100, 110);
89 data = xgene_enet_rd_diag_csr(p, ENET_BLOCK_MEM_RDY_ADDR);
90 if (data == ~0U)
91 return 0;
92 } while (++i < 10);
93
94 netdev_err(ndev, "Failed to release memory from shutdown\n");
95 return -ENODEV;
96 }
97
98 static void xgene_sgmac_get_drop_cnt(struct xgene_enet_pdata *pdata,
99 u32 *rx, u32 *tx)
100 {
101 u32 addr, count;
102
103 addr = (pdata->enet_id != XGENE_ENET1) ?
104 XG_MCX_ICM_ECM_DROP_COUNT_REG0_ADDR :
105 ICM_ECM_DROP_COUNT_REG0_ADDR + pdata->port_id * OFFSET_4;
106 count = xgene_enet_rd_mcx_csr(pdata, addr);
107 *rx = ICM_DROP_COUNT(count);
108 *tx = ECM_DROP_COUNT(count);
109 /* Errata: 10GE_4 - ICM_ECM_DROP_COUNT not clear-on-read */
110 addr = (pdata->enet_id != XGENE_ENET1) ?
111 XG_MCX_ECM_CONFIG0_REG_0_ADDR :
112 ECM_CONFIG0_REG_0_ADDR + pdata->port_id * OFFSET_4;
113 xgene_enet_rd_mcx_csr(pdata, addr);
114 }
115
116 static void xgene_enet_config_ring_if_assoc(struct xgene_enet_pdata *p)
117 {
118 u32 val;
119
120 val = (p->enet_id == XGENE_ENET1) ? 0xffffffff : 0;
121 xgene_enet_wr_ring_if(p, ENET_CFGSSQMIWQASSOC_ADDR, val);
122 xgene_enet_wr_ring_if(p, ENET_CFGSSQMIFPQASSOC_ADDR, val);
123 }
124
125 static void xgene_mii_phy_write(struct xgene_enet_pdata *p, u8 phy_id,
126 u32 reg, u16 data)
127 {
128 u32 addr, wr_data, done;
129 int i;
130
131 addr = PHY_ADDR(phy_id) | REG_ADDR(reg);
132 xgene_enet_wr_mac(p, MII_MGMT_ADDRESS_ADDR, addr);
133
134 wr_data = PHY_CONTROL(data);
135 xgene_enet_wr_mac(p, MII_MGMT_CONTROL_ADDR, wr_data);
136
137 for (i = 0; i < 10; i++) {
138 done = xgene_enet_rd_mac(p, MII_MGMT_INDICATORS_ADDR);
139 if (!(done & BUSY_MASK))
140 return;
141 usleep_range(10, 20);
142 }
143
144 netdev_err(p->ndev, "MII_MGMT write failed\n");
145 }
146
147 static u32 xgene_mii_phy_read(struct xgene_enet_pdata *p, u8 phy_id, u32 reg)
148 {
149 u32 addr, data, done;
150 int i;
151
152 addr = PHY_ADDR(phy_id) | REG_ADDR(reg);
153 xgene_enet_wr_mac(p, MII_MGMT_ADDRESS_ADDR, addr);
154 xgene_enet_wr_mac(p, MII_MGMT_COMMAND_ADDR, READ_CYCLE_MASK);
155
156 for (i = 0; i < 10; i++) {
157 done = xgene_enet_rd_mac(p, MII_MGMT_INDICATORS_ADDR);
158 if (!(done & BUSY_MASK)) {
159 data = xgene_enet_rd_mac(p, MII_MGMT_STATUS_ADDR);
160 xgene_enet_wr_mac(p, MII_MGMT_COMMAND_ADDR, 0);
161
162 return data;
163 }
164 usleep_range(10, 20);
165 }
166
167 netdev_err(p->ndev, "MII_MGMT read failed\n");
168
169 return 0;
170 }
171
172 static void xgene_sgmac_reset(struct xgene_enet_pdata *p)
173 {
174 xgene_enet_wr_mac(p, MAC_CONFIG_1_ADDR, SOFT_RESET1);
175 xgene_enet_wr_mac(p, MAC_CONFIG_1_ADDR, 0);
176 }
177
178 static void xgene_sgmac_set_mac_addr(struct xgene_enet_pdata *p)
179 {
180 u32 addr0, addr1;
181 u8 *dev_addr = p->ndev->dev_addr;
182
183 addr0 = (dev_addr[3] << 24) | (dev_addr[2] << 16) |
184 (dev_addr[1] << 8) | dev_addr[0];
185 xgene_enet_wr_mac(p, STATION_ADDR0_ADDR, addr0);
186
187 addr1 = xgene_enet_rd_mac(p, STATION_ADDR1_ADDR);
188 addr1 |= (dev_addr[5] << 24) | (dev_addr[4] << 16);
189 xgene_enet_wr_mac(p, STATION_ADDR1_ADDR, addr1);
190 }
191
192 static u32 xgene_enet_link_status(struct xgene_enet_pdata *p)
193 {
194 u32 data;
195
196 data = xgene_mii_phy_read(p, INT_PHY_ADDR,
197 SGMII_BASE_PAGE_ABILITY_ADDR >> 2);
198
199 if (LINK_SPEED(data) == PHY_SPEED_1000)
200 p->phy_speed = SPEED_1000;
201 else if (LINK_SPEED(data) == PHY_SPEED_100)
202 p->phy_speed = SPEED_100;
203 else
204 p->phy_speed = SPEED_10;
205
206 return data & LINK_UP;
207 }
208
209 static void xgene_sgmii_configure(struct xgene_enet_pdata *p)
210 {
211 xgene_mii_phy_write(p, INT_PHY_ADDR, SGMII_TBI_CONTROL_ADDR >> 2,
212 0x8000);
213 xgene_mii_phy_write(p, INT_PHY_ADDR, SGMII_CONTROL_ADDR >> 2, 0x9000);
214 xgene_mii_phy_write(p, INT_PHY_ADDR, SGMII_TBI_CONTROL_ADDR >> 2, 0);
215 }
216
217 static void xgene_sgmii_tbi_control_reset(struct xgene_enet_pdata *p)
218 {
219 xgene_mii_phy_write(p, INT_PHY_ADDR, SGMII_TBI_CONTROL_ADDR >> 2,
220 0x8000);
221 xgene_mii_phy_write(p, INT_PHY_ADDR, SGMII_TBI_CONTROL_ADDR >> 2, 0);
222 }
223
224 static void xgene_sgmii_reset(struct xgene_enet_pdata *p)
225 {
226 u32 value;
227
228 if (p->phy_speed == SPEED_UNKNOWN)
229 return;
230
231 value = xgene_mii_phy_read(p, INT_PHY_ADDR,
232 SGMII_BASE_PAGE_ABILITY_ADDR >> 2);
233 if (!(value & LINK_UP))
234 xgene_sgmii_tbi_control_reset(p);
235 }
236
237 static void xgene_sgmac_set_speed(struct xgene_enet_pdata *p)
238 {
239 u32 icm0_addr, icm2_addr, debug_addr;
240 u32 icm0, icm2, intf_ctl;
241 u32 mc2, value;
242
243 xgene_sgmii_reset(p);
244
245 if (p->enet_id == XGENE_ENET1) {
246 icm0_addr = ICM_CONFIG0_REG_0_ADDR + p->port_id * OFFSET_8;
247 icm2_addr = ICM_CONFIG2_REG_0_ADDR + p->port_id * OFFSET_4;
248 debug_addr = DEBUG_REG_ADDR;
249 } else {
250 icm0_addr = XG_MCX_ICM_CONFIG0_REG_0_ADDR;
251 icm2_addr = XG_MCX_ICM_CONFIG2_REG_0_ADDR;
252 debug_addr = XG_DEBUG_REG_ADDR;
253 }
254
255 icm0 = xgene_enet_rd_mcx_csr(p, icm0_addr);
256 icm2 = xgene_enet_rd_mcx_csr(p, icm2_addr);
257 mc2 = xgene_enet_rd_mac(p, MAC_CONFIG_2_ADDR);
258 intf_ctl = xgene_enet_rd_mac(p, INTERFACE_CONTROL_ADDR);
259
260 switch (p->phy_speed) {
261 case SPEED_10:
262 ENET_INTERFACE_MODE2_SET(&mc2, 1);
263 intf_ctl &= ~(ENET_LHD_MODE | ENET_GHD_MODE);
264 CFG_MACMODE_SET(&icm0, 0);
265 CFG_WAITASYNCRD_SET(&icm2, 500);
266 break;
267 case SPEED_100:
268 ENET_INTERFACE_MODE2_SET(&mc2, 1);
269 intf_ctl &= ~ENET_GHD_MODE;
270 intf_ctl |= ENET_LHD_MODE;
271 CFG_MACMODE_SET(&icm0, 1);
272 CFG_WAITASYNCRD_SET(&icm2, 80);
273 break;
274 default:
275 ENET_INTERFACE_MODE2_SET(&mc2, 2);
276 intf_ctl &= ~ENET_LHD_MODE;
277 intf_ctl |= ENET_GHD_MODE;
278 CFG_MACMODE_SET(&icm0, 2);
279 CFG_WAITASYNCRD_SET(&icm2, 16);
280 value = xgene_enet_rd_csr(p, debug_addr);
281 value |= CFG_BYPASS_UNISEC_TX | CFG_BYPASS_UNISEC_RX;
282 xgene_enet_wr_csr(p, debug_addr, value);
283 break;
284 }
285
286 mc2 |= FULL_DUPLEX2 | PAD_CRC;
287 xgene_enet_wr_mac(p, MAC_CONFIG_2_ADDR, mc2);
288 xgene_enet_wr_mac(p, INTERFACE_CONTROL_ADDR, intf_ctl);
289 xgene_enet_wr_mcx_csr(p, icm0_addr, icm0);
290 xgene_enet_wr_mcx_csr(p, icm2_addr, icm2);
291 }
292
293 static void xgene_sgmac_set_frame_size(struct xgene_enet_pdata *pdata, int size)
294 {
295 xgene_enet_wr_mac(pdata, MAX_FRAME_LEN_ADDR, size);
296 }
297
298 static void xgene_sgmii_enable_autoneg(struct xgene_enet_pdata *p)
299 {
300 u32 data, loop = 10;
301
302 xgene_sgmii_configure(p);
303
304 while (loop--) {
305 data = xgene_mii_phy_read(p, INT_PHY_ADDR,
306 SGMII_STATUS_ADDR >> 2);
307 if ((data & AUTO_NEG_COMPLETE) && (data & LINK_STATUS))
308 break;
309 usleep_range(1000, 2000);
310 }
311 if (!(data & AUTO_NEG_COMPLETE) || !(data & LINK_STATUS))
312 netdev_err(p->ndev, "Auto-negotiation failed\n");
313 }
314
315 static void xgene_sgmac_rxtx(struct xgene_enet_pdata *p, u32 bits, bool set)
316 {
317 u32 data;
318
319 data = xgene_enet_rd_mac(p, MAC_CONFIG_1_ADDR);
320
321 if (set)
322 data |= bits;
323 else
324 data &= ~bits;
325
326 xgene_enet_wr_mac(p, MAC_CONFIG_1_ADDR, data);
327 }
328
329 static void xgene_sgmac_flowctl_tx(struct xgene_enet_pdata *p, bool enable)
330 {
331 xgene_sgmac_rxtx(p, TX_FLOW_EN, enable);
332
333 p->mac_ops->enable_tx_pause(p, enable);
334 }
335
336 static void xgene_sgmac_flowctl_rx(struct xgene_enet_pdata *pdata, bool enable)
337 {
338 xgene_sgmac_rxtx(pdata, RX_FLOW_EN, enable);
339 }
340
341 static void xgene_sgmac_init(struct xgene_enet_pdata *p)
342 {
343 u32 pause_thres_reg, pause_off_thres_reg;
344 u32 enet_spare_cfg_reg, rsif_config_reg;
345 u32 cfg_bypass_reg, rx_dv_gate_reg;
346 u32 data, data1, data2, offset;
347 u32 multi_dpf_reg;
348
349 if (!(p->enet_id == XGENE_ENET2 && p->mdio_driver))
350 xgene_sgmac_reset(p);
351
352 xgene_sgmii_enable_autoneg(p);
353 xgene_sgmac_set_speed(p);
354 xgene_sgmac_set_mac_addr(p);
355
356 if (p->enet_id == XGENE_ENET1) {
357 enet_spare_cfg_reg = ENET_SPARE_CFG_REG_ADDR;
358 rsif_config_reg = RSIF_CONFIG_REG_ADDR;
359 cfg_bypass_reg = CFG_BYPASS_ADDR;
360 offset = p->port_id * OFFSET_4;
361 rx_dv_gate_reg = SG_RX_DV_GATE_REG_0_ADDR + offset;
362 } else {
363 enet_spare_cfg_reg = XG_ENET_SPARE_CFG_REG_ADDR;
364 rsif_config_reg = XG_RSIF_CONFIG_REG_ADDR;
365 cfg_bypass_reg = XG_CFG_BYPASS_ADDR;
366 rx_dv_gate_reg = XG_MCX_RX_DV_GATE_REG_0_ADDR;
367 }
368
369 data = xgene_enet_rd_csr(p, enet_spare_cfg_reg);
370 data |= MPA_IDLE_WITH_QMI_EMPTY;
371 xgene_enet_wr_csr(p, enet_spare_cfg_reg, data);
372
373 /* Adjust MDC clock frequency */
374 data = xgene_enet_rd_mac(p, MII_MGMT_CONFIG_ADDR);
375 MGMT_CLOCK_SEL_SET(&data, 7);
376 xgene_enet_wr_mac(p, MII_MGMT_CONFIG_ADDR, data);
377
378 /* Enable drop if bufpool not available */
379 data = xgene_enet_rd_csr(p, rsif_config_reg);
380 data |= CFG_RSIF_FPBUFF_TIMEOUT_EN;
381 xgene_enet_wr_csr(p, rsif_config_reg, data);
382
383 /* Configure HW pause frame generation */
384 multi_dpf_reg = (p->enet_id == XGENE_ENET1) ? CSR_MULTI_DPF0_ADDR :
385 XG_MCX_MULTI_DPF0_ADDR;
386 data = xgene_enet_rd_mcx_csr(p, multi_dpf_reg);
387 data = (DEF_QUANTA << 16) | (data & 0xffff);
388 xgene_enet_wr_mcx_csr(p, multi_dpf_reg, data);
389
390 if (p->enet_id != XGENE_ENET1) {
391 data = xgene_enet_rd_mcx_csr(p, XG_MCX_MULTI_DPF1_ADDR);
392 data = (NORM_PAUSE_OPCODE << 16) | (data & 0xFFFF);
393 xgene_enet_wr_mcx_csr(p, XG_MCX_MULTI_DPF1_ADDR, data);
394 }
395
396 pause_thres_reg = (p->enet_id == XGENE_ENET1) ? RXBUF_PAUSE_THRESH :
397 XG_RXBUF_PAUSE_THRESH;
398 pause_off_thres_reg = (p->enet_id == XGENE_ENET1) ?
399 RXBUF_PAUSE_OFF_THRESH : 0;
400
401 if (p->enet_id == XGENE_ENET1) {
402 data1 = xgene_enet_rd_csr(p, pause_thres_reg);
403 data2 = xgene_enet_rd_csr(p, pause_off_thres_reg);
404
405 if (!(p->port_id % 2)) {
406 data1 = (data1 & 0xffff0000) | DEF_PAUSE_THRES;
407 data2 = (data2 & 0xffff0000) | DEF_PAUSE_OFF_THRES;
408 } else {
409 data1 = (data1 & 0xffff) | (DEF_PAUSE_THRES << 16);
410 data2 = (data2 & 0xffff) | (DEF_PAUSE_OFF_THRES << 16);
411 }
412
413 xgene_enet_wr_csr(p, pause_thres_reg, data1);
414 xgene_enet_wr_csr(p, pause_off_thres_reg, data2);
415 } else {
416 data = (DEF_PAUSE_OFF_THRES << 16) | DEF_PAUSE_THRES;
417 xgene_enet_wr_csr(p, pause_thres_reg, data);
418 }
419
420 xgene_sgmac_flowctl_tx(p, p->tx_pause);
421 xgene_sgmac_flowctl_rx(p, p->rx_pause);
422
423 /* Bypass traffic gating */
424 xgene_enet_wr_csr(p, XG_ENET_SPARE_CFG_REG_1_ADDR, 0x84);
425 xgene_enet_wr_csr(p, cfg_bypass_reg, RESUME_TX);
426 xgene_enet_wr_mcx_csr(p, rx_dv_gate_reg, RESUME_RX0);
427 }
428
429 static void xgene_sgmac_rx_enable(struct xgene_enet_pdata *p)
430 {
431 xgene_sgmac_rxtx(p, RX_EN, true);
432 }
433
434 static void xgene_sgmac_tx_enable(struct xgene_enet_pdata *p)
435 {
436 xgene_sgmac_rxtx(p, TX_EN, true);
437 }
438
439 static void xgene_sgmac_rx_disable(struct xgene_enet_pdata *p)
440 {
441 xgene_sgmac_rxtx(p, RX_EN, false);
442 }
443
444 static void xgene_sgmac_tx_disable(struct xgene_enet_pdata *p)
445 {
446 xgene_sgmac_rxtx(p, TX_EN, false);
447 }
448
449 static int xgene_enet_reset(struct xgene_enet_pdata *p)
450 {
451 struct device *dev = &p->pdev->dev;
452
453 if (!xgene_ring_mgr_init(p))
454 return -ENODEV;
455
456 if (p->mdio_driver && p->enet_id == XGENE_ENET2) {
457 xgene_enet_config_ring_if_assoc(p);
458 return 0;
459 }
460
461 if (p->enet_id == XGENE_ENET2)
462 xgene_enet_wr_clkrst_csr(p, XGENET_CONFIG_REG_ADDR, SGMII_EN);
463
464 if (dev->of_node) {
465 if (!IS_ERR(p->clk)) {
466 clk_prepare_enable(p->clk);
467 udelay(5);
468 clk_disable_unprepare(p->clk);
469 udelay(5);
470 clk_prepare_enable(p->clk);
471 udelay(5);
472 }
473 } else {
474 #ifdef CONFIG_ACPI
475 if (acpi_has_method(ACPI_HANDLE(&p->pdev->dev), "_RST"))
476 acpi_evaluate_object(ACPI_HANDLE(&p->pdev->dev),
477 "_RST", NULL, NULL);
478 else if (acpi_has_method(ACPI_HANDLE(&p->pdev->dev), "_INI"))
479 acpi_evaluate_object(ACPI_HANDLE(&p->pdev->dev),
480 "_INI", NULL, NULL);
481 #endif
482 }
483
484 if (!p->port_id) {
485 xgene_enet_ecc_init(p);
486 xgene_enet_config_ring_if_assoc(p);
487 }
488
489 return 0;
490 }
491
492 static void xgene_enet_cle_bypass(struct xgene_enet_pdata *p,
493 u32 dst_ring_num, u16 bufpool_id,
494 u16 nxtbufpool_id)
495 {
496 u32 cle_bypass_reg0, cle_bypass_reg1;
497 u32 offset = p->port_id * MAC_OFFSET;
498 u32 data, fpsel, nxtfpsel;
499
500 if (p->enet_id == XGENE_ENET1) {
501 cle_bypass_reg0 = CLE_BYPASS_REG0_0_ADDR;
502 cle_bypass_reg1 = CLE_BYPASS_REG1_0_ADDR;
503 } else {
504 cle_bypass_reg0 = XCLE_BYPASS_REG0_ADDR;
505 cle_bypass_reg1 = XCLE_BYPASS_REG1_ADDR;
506 }
507
508 data = CFG_CLE_BYPASS_EN0;
509 xgene_enet_wr_csr(p, cle_bypass_reg0 + offset, data);
510
511 fpsel = xgene_enet_get_fpsel(bufpool_id);
512 nxtfpsel = xgene_enet_get_fpsel(nxtbufpool_id);
513 data = CFG_CLE_DSTQID0(dst_ring_num) | CFG_CLE_FPSEL0(fpsel) |
514 CFG_CLE_NXTFPSEL0(nxtfpsel);
515 xgene_enet_wr_csr(p, cle_bypass_reg1 + offset, data);
516 }
517
518 static void xgene_enet_clear(struct xgene_enet_pdata *pdata,
519 struct xgene_enet_desc_ring *ring)
520 {
521 u32 addr, data;
522
523 if (xgene_enet_is_bufpool(ring->id)) {
524 addr = ENET_CFGSSQMIFPRESET_ADDR;
525 data = BIT(xgene_enet_get_fpsel(ring->id));
526 } else {
527 addr = ENET_CFGSSQMIWQRESET_ADDR;
528 data = BIT(xgene_enet_ring_bufnum(ring->id));
529 }
530
531 xgene_enet_wr_ring_if(pdata, addr, data);
532 }
533
534 static void xgene_enet_shutdown(struct xgene_enet_pdata *p)
535 {
536 struct device *dev = &p->pdev->dev;
537
538 if (dev->of_node) {
539 if (!IS_ERR(p->clk))
540 clk_disable_unprepare(p->clk);
541 }
542 }
543
544 static void xgene_enet_link_state(struct work_struct *work)
545 {
546 struct xgene_enet_pdata *p = container_of(to_delayed_work(work),
547 struct xgene_enet_pdata, link_work);
548 struct net_device *ndev = p->ndev;
549 u32 link, poll_interval;
550
551 link = xgene_enet_link_status(p);
552 if (link) {
553 if (!netif_carrier_ok(ndev)) {
554 netif_carrier_on(ndev);
555 xgene_sgmac_set_speed(p);
556 xgene_sgmac_rx_enable(p);
557 xgene_sgmac_tx_enable(p);
558 netdev_info(ndev, "Link is Up - %dMbps\n",
559 p->phy_speed);
560 }
561 poll_interval = PHY_POLL_LINK_ON;
562 } else {
563 if (netif_carrier_ok(ndev)) {
564 xgene_sgmac_rx_disable(p);
565 xgene_sgmac_tx_disable(p);
566 netif_carrier_off(ndev);
567 netdev_info(ndev, "Link is Down\n");
568 }
569 poll_interval = PHY_POLL_LINK_OFF;
570 }
571
572 schedule_delayed_work(&p->link_work, poll_interval);
573 }
574
575 static void xgene_sgmac_enable_tx_pause(struct xgene_enet_pdata *p, bool enable)
576 {
577 u32 data, ecm_cfg_addr;
578
579 if (p->enet_id == XGENE_ENET1) {
580 ecm_cfg_addr = (!(p->port_id % 2)) ? CSR_ECM_CFG_0_ADDR :
581 CSR_ECM_CFG_1_ADDR;
582 } else {
583 ecm_cfg_addr = XG_MCX_ECM_CFG_0_ADDR;
584 }
585
586 data = xgene_enet_rd_mcx_csr(p, ecm_cfg_addr);
587 if (enable)
588 data |= MULTI_DPF_AUTOCTRL | PAUSE_XON_EN;
589 else
590 data &= ~(MULTI_DPF_AUTOCTRL | PAUSE_XON_EN);
591 xgene_enet_wr_mcx_csr(p, ecm_cfg_addr, data);
592 }
593
594 const struct xgene_mac_ops xgene_sgmac_ops = {
595 .init = xgene_sgmac_init,
596 .reset = xgene_sgmac_reset,
597 .rx_enable = xgene_sgmac_rx_enable,
598 .tx_enable = xgene_sgmac_tx_enable,
599 .rx_disable = xgene_sgmac_rx_disable,
600 .tx_disable = xgene_sgmac_tx_disable,
601 .get_drop_cnt = xgene_sgmac_get_drop_cnt,
602 .set_speed = xgene_sgmac_set_speed,
603 .set_mac_addr = xgene_sgmac_set_mac_addr,
604 .set_framesize = xgene_sgmac_set_frame_size,
605 .link_state = xgene_enet_link_state,
606 .enable_tx_pause = xgene_sgmac_enable_tx_pause,
607 .flowctl_tx = xgene_sgmac_flowctl_tx,
608 .flowctl_rx = xgene_sgmac_flowctl_rx
609 };
610
611 const struct xgene_port_ops xgene_sgport_ops = {
612 .reset = xgene_enet_reset,
613 .clear = xgene_enet_clear,
614 .cle_bypass = xgene_enet_cle_bypass,
615 .shutdown = xgene_enet_shutdown
616 };
Linux with added FPC-III support