1 // SPDX-License-Identifier: GPL-2.0
2 /* Marvell OcteonTx2 CGX driver
4 * Copyright (C) 2018 Marvell.
8 #include <linux/acpi.h>
9 #include <linux/module.h>
10 #include <linux/interrupt.h>
11 #include <linux/pci.h>
12 #include <linux/netdevice.h>
13 #include <linux/etherdevice.h>
14 #include <linux/ethtool.h>
15 #include <linux/phy.h>
17 #include <linux/of_mdio.h>
18 #include <linux/of_net.h>
22 #include "lmac_common.h"
24 #define DRV_NAME "Marvell-CGX/RPM"
25 #define DRV_STRING "Marvell CGX/RPM Driver"
27 static LIST_HEAD(cgx_list);
29 /* Convert firmware speed encoding to user format(Mbps) */
30 static const u32 cgx_speed_mbps[CGX_LINK_SPEED_MAX] = {
33 [CGX_LINK_100M] = 100,
35 [CGX_LINK_2HG] = 2500,
37 [CGX_LINK_10G] = 10000,
38 [CGX_LINK_20G] = 20000,
39 [CGX_LINK_25G] = 25000,
40 [CGX_LINK_40G] = 40000,
41 [CGX_LINK_50G] = 50000,
42 [CGX_LINK_80G] = 80000,
43 [CGX_LINK_100G] = 100000,
46 /* Convert firmware lmac type encoding to string */
47 static const char *cgx_lmactype_string[LMAC_MODE_MAX] = {
48 [LMAC_MODE_SGMII] = "SGMII",
49 [LMAC_MODE_XAUI] = "XAUI",
50 [LMAC_MODE_RXAUI] = "RXAUI",
51 [LMAC_MODE_10G_R] = "10G_R",
52 [LMAC_MODE_40G_R] = "40G_R",
53 [LMAC_MODE_QSGMII] = "QSGMII",
54 [LMAC_MODE_25G_R] = "25G_R",
55 [LMAC_MODE_50G_R] = "50G_R",
56 [LMAC_MODE_100G_R] = "100G_R",
57 [LMAC_MODE_USXGMII] = "USXGMII",
60 /* CGX PHY management internal APIs */
61 static int cgx_fwi_link_change(struct cgx *cgx, int lmac_id, bool en);
63 /* Supported devices */
64 static const struct pci_device_id cgx_id_table[] = {
65 { PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVID_OCTEONTX2_CGX) },
66 { PCI_DEVICE(PCI_VENDOR_ID_CAVIUM, PCI_DEVID_CN10K_RPM) },
67 { 0, } /* end of table */
70 MODULE_DEVICE_TABLE(pci, cgx_id_table);
72 static bool is_dev_rpm(void *cgxd)
74 struct cgx *cgx = cgxd;
76 return (cgx->pdev->device == PCI_DEVID_CN10K_RPM);
79 bool is_lmac_valid(struct cgx *cgx, int lmac_id)
81 if (!cgx || lmac_id < 0 || lmac_id >= MAX_LMAC_PER_CGX)
83 return test_bit(lmac_id, &cgx->lmac_bmap);
86 /* Helper function to get sequential index
87 * given the enabled LMAC of a CGX
89 static int get_sequence_id_of_lmac(struct cgx *cgx, int lmac_id)
93 for_each_set_bit(tmp, &cgx->lmac_bmap, MAX_LMAC_PER_CGX) {
102 struct mac_ops *get_mac_ops(void *cgxd)
107 return ((struct cgx *)cgxd)->mac_ops;
110 void cgx_write(struct cgx *cgx, u64 lmac, u64 offset, u64 val)
112 writeq(val, cgx->reg_base + (lmac << cgx->mac_ops->lmac_offset) +
116 u64 cgx_read(struct cgx *cgx, u64 lmac, u64 offset)
118 return readq(cgx->reg_base + (lmac << cgx->mac_ops->lmac_offset) +
122 struct lmac *lmac_pdata(u8 lmac_id, struct cgx *cgx)
124 if (!cgx || lmac_id >= MAX_LMAC_PER_CGX)
127 return cgx->lmac_idmap[lmac_id];
130 int cgx_get_cgxcnt_max(void)
135 list_for_each_entry(cgx_dev, &cgx_list, cgx_list)
136 if (cgx_dev->cgx_id > idmax)
137 idmax = cgx_dev->cgx_id;
145 int cgx_get_lmac_cnt(void *cgxd)
147 struct cgx *cgx = cgxd;
152 return cgx->lmac_count;
155 void *cgx_get_pdata(int cgx_id)
159 list_for_each_entry(cgx_dev, &cgx_list, cgx_list) {
160 if (cgx_dev->cgx_id == cgx_id)
166 void cgx_lmac_write(int cgx_id, int lmac_id, u64 offset, u64 val)
168 struct cgx *cgx_dev = cgx_get_pdata(cgx_id);
170 cgx_write(cgx_dev, lmac_id, offset, val);
173 u64 cgx_lmac_read(int cgx_id, int lmac_id, u64 offset)
175 struct cgx *cgx_dev = cgx_get_pdata(cgx_id);
177 return cgx_read(cgx_dev, lmac_id, offset);
180 int cgx_get_cgxid(void *cgxd)
182 struct cgx *cgx = cgxd;
190 u8 cgx_lmac_get_p2x(int cgx_id, int lmac_id)
192 struct cgx *cgx_dev = cgx_get_pdata(cgx_id);
195 cfg = cgx_read(cgx_dev, lmac_id, CGXX_CMRX_CFG);
197 return (cfg & CMR_P2X_SEL_MASK) >> CMR_P2X_SEL_SHIFT;
200 /* Ensure the required lock for event queue(where asynchronous events are
201 * posted) is acquired before calling this API. Else an asynchronous event(with
202 * latest link status) can reach the destination before this function returns
203 * and could make the link status appear wrong.
205 int cgx_get_link_info(void *cgxd, int lmac_id,
206 struct cgx_link_user_info *linfo)
208 struct lmac *lmac = lmac_pdata(lmac_id, cgxd);
213 *linfo = lmac->link_info;
217 static u64 mac2u64 (u8 *mac_addr)
222 for (index = ETH_ALEN - 1; index >= 0; index--)
223 mac |= ((u64)*mac_addr++) << (8 * index);
227 static void cfg2mac(u64 cfg, u8 *mac_addr)
231 for (i = ETH_ALEN - 1; i >= 0; i--, index++)
232 mac_addr[i] = (cfg >> (8 * index)) & 0xFF;
235 int cgx_lmac_addr_set(u8 cgx_id, u8 lmac_id, u8 *mac_addr)
237 struct cgx *cgx_dev = cgx_get_pdata(cgx_id);
238 struct lmac *lmac = lmac_pdata(lmac_id, cgx_dev);
239 struct mac_ops *mac_ops;
243 /* access mac_ops to know csr_offset */
244 mac_ops = cgx_dev->mac_ops;
246 /* copy 6bytes from macaddr */
247 /* memcpy(&cfg, mac_addr, 6); */
249 cfg = mac2u64 (mac_addr);
251 id = get_sequence_id_of_lmac(cgx_dev, lmac_id);
253 index = id * lmac->mac_to_index_bmap.max;
255 cgx_write(cgx_dev, 0, (CGXX_CMRX_RX_DMAC_CAM0 + (index * 0x8)),
256 cfg | CGX_DMAC_CAM_ADDR_ENABLE | ((u64)lmac_id << 49));
258 cfg = cgx_read(cgx_dev, lmac_id, CGXX_CMRX_RX_DMAC_CTL0);
259 cfg |= (CGX_DMAC_CTL0_CAM_ENABLE | CGX_DMAC_BCAST_MODE |
260 CGX_DMAC_MCAST_MODE);
261 cgx_write(cgx_dev, lmac_id, CGXX_CMRX_RX_DMAC_CTL0, cfg);
266 u64 cgx_read_dmac_ctrl(void *cgxd, int lmac_id)
268 struct mac_ops *mac_ops;
269 struct cgx *cgx = cgxd;
271 if (!cgxd || !is_lmac_valid(cgxd, lmac_id))
275 /* Get mac_ops to know csr offset */
276 mac_ops = cgx->mac_ops;
278 return cgx_read(cgxd, lmac_id, CGXX_CMRX_RX_DMAC_CTL0);
281 u64 cgx_read_dmac_entry(void *cgxd, int index)
283 struct mac_ops *mac_ops;
290 mac_ops = cgx->mac_ops;
291 return cgx_read(cgx, 0, (CGXX_CMRX_RX_DMAC_CAM0 + (index * 8)));
294 int cgx_lmac_addr_add(u8 cgx_id, u8 lmac_id, u8 *mac_addr)
296 struct cgx *cgx_dev = cgx_get_pdata(cgx_id);
297 struct lmac *lmac = lmac_pdata(lmac_id, cgx_dev);
298 struct mac_ops *mac_ops;
306 mac_ops = cgx_dev->mac_ops;
307 /* Get available index where entry is to be installed */
308 idx = rvu_alloc_rsrc(&lmac->mac_to_index_bmap);
312 id = get_sequence_id_of_lmac(cgx_dev, lmac_id);
314 index = id * lmac->mac_to_index_bmap.max + idx;
316 cfg = mac2u64 (mac_addr);
317 cfg |= CGX_DMAC_CAM_ADDR_ENABLE;
318 cfg |= ((u64)lmac_id << 49);
319 cgx_write(cgx_dev, 0, (CGXX_CMRX_RX_DMAC_CAM0 + (index * 0x8)), cfg);
321 cfg = cgx_read(cgx_dev, lmac_id, CGXX_CMRX_RX_DMAC_CTL0);
322 cfg |= (CGX_DMAC_BCAST_MODE | CGX_DMAC_CAM_ACCEPT);
324 if (is_multicast_ether_addr(mac_addr)) {
325 cfg &= ~GENMASK_ULL(2, 1);
326 cfg |= CGX_DMAC_MCAST_MODE_CAM;
327 lmac->mcast_filters_count++;
328 } else if (!lmac->mcast_filters_count) {
329 cfg |= CGX_DMAC_MCAST_MODE;
332 cgx_write(cgx_dev, lmac_id, CGXX_CMRX_RX_DMAC_CTL0, cfg);
337 int cgx_lmac_addr_reset(u8 cgx_id, u8 lmac_id)
339 struct cgx *cgx_dev = cgx_get_pdata(cgx_id);
340 struct lmac *lmac = lmac_pdata(lmac_id, cgx_dev);
341 struct mac_ops *mac_ops;
348 mac_ops = cgx_dev->mac_ops;
349 /* Restore index 0 to its default init value as done during
352 set_bit(0, lmac->mac_to_index_bmap.bmap);
354 id = get_sequence_id_of_lmac(cgx_dev, lmac_id);
356 index = id * lmac->mac_to_index_bmap.max + index;
357 cgx_write(cgx_dev, 0, (CGXX_CMRX_RX_DMAC_CAM0 + (index * 0x8)), 0);
359 /* Reset CGXX_CMRX_RX_DMAC_CTL0 register to default state */
360 cfg = cgx_read(cgx_dev, lmac_id, CGXX_CMRX_RX_DMAC_CTL0);
361 cfg &= ~CGX_DMAC_CAM_ACCEPT;
362 cfg |= (CGX_DMAC_BCAST_MODE | CGX_DMAC_MCAST_MODE);
363 cgx_write(cgx_dev, lmac_id, CGXX_CMRX_RX_DMAC_CTL0, cfg);
368 /* Allows caller to change macaddress associated with index
369 * in dmac filter table including index 0 reserved for
370 * interface mac address
372 int cgx_lmac_addr_update(u8 cgx_id, u8 lmac_id, u8 *mac_addr, u8 index)
374 struct cgx *cgx_dev = cgx_get_pdata(cgx_id);
375 struct mac_ops *mac_ops;
380 lmac = lmac_pdata(lmac_id, cgx_dev);
384 mac_ops = cgx_dev->mac_ops;
385 /* Validate the index */
386 if (index >= lmac->mac_to_index_bmap.max)
389 /* ensure index is already set */
390 if (!test_bit(index, lmac->mac_to_index_bmap.bmap))
393 id = get_sequence_id_of_lmac(cgx_dev, lmac_id);
395 index = id * lmac->mac_to_index_bmap.max + index;
397 cfg = cgx_read(cgx_dev, 0, (CGXX_CMRX_RX_DMAC_CAM0 + (index * 0x8)));
398 cfg &= ~CGX_RX_DMAC_ADR_MASK;
399 cfg |= mac2u64 (mac_addr);
401 cgx_write(cgx_dev, 0, (CGXX_CMRX_RX_DMAC_CAM0 + (index * 0x8)), cfg);
405 int cgx_lmac_addr_del(u8 cgx_id, u8 lmac_id, u8 index)
407 struct cgx *cgx_dev = cgx_get_pdata(cgx_id);
408 struct lmac *lmac = lmac_pdata(lmac_id, cgx_dev);
409 struct mac_ops *mac_ops;
417 mac_ops = cgx_dev->mac_ops;
418 /* Validate the index */
419 if (index >= lmac->mac_to_index_bmap.max)
422 /* Skip deletion for reserved index i.e. index 0 */
426 rvu_free_rsrc(&lmac->mac_to_index_bmap, index);
428 id = get_sequence_id_of_lmac(cgx_dev, lmac_id);
430 index = id * lmac->mac_to_index_bmap.max + index;
432 /* Read MAC address to check whether it is ucast or mcast */
433 cfg = cgx_read(cgx_dev, 0, (CGXX_CMRX_RX_DMAC_CAM0 + (index * 0x8)));
436 if (is_multicast_ether_addr(mac))
437 lmac->mcast_filters_count--;
439 if (!lmac->mcast_filters_count) {
440 cfg = cgx_read(cgx_dev, lmac_id, CGXX_CMRX_RX_DMAC_CTL0);
441 cfg &= ~GENMASK_ULL(2, 1);
442 cfg |= CGX_DMAC_MCAST_MODE;
443 cgx_write(cgx_dev, lmac_id, CGXX_CMRX_RX_DMAC_CTL0, cfg);
446 cgx_write(cgx_dev, 0, (CGXX_CMRX_RX_DMAC_CAM0 + (index * 0x8)), 0);
451 int cgx_lmac_addr_max_entries_get(u8 cgx_id, u8 lmac_id)
453 struct cgx *cgx_dev = cgx_get_pdata(cgx_id);
454 struct lmac *lmac = lmac_pdata(lmac_id, cgx_dev);
457 return lmac->mac_to_index_bmap.max;
462 u64 cgx_lmac_addr_get(u8 cgx_id, u8 lmac_id)
464 struct cgx *cgx_dev = cgx_get_pdata(cgx_id);
465 struct lmac *lmac = lmac_pdata(lmac_id, cgx_dev);
466 struct mac_ops *mac_ops;
471 mac_ops = cgx_dev->mac_ops;
473 id = get_sequence_id_of_lmac(cgx_dev, lmac_id);
475 index = id * lmac->mac_to_index_bmap.max;
477 cfg = cgx_read(cgx_dev, 0, CGXX_CMRX_RX_DMAC_CAM0 + index * 0x8);
478 return cfg & CGX_RX_DMAC_ADR_MASK;
481 int cgx_set_pkind(void *cgxd, u8 lmac_id, int pkind)
483 struct cgx *cgx = cgxd;
485 if (!is_lmac_valid(cgx, lmac_id))
488 cgx_write(cgx, lmac_id, CGXX_CMRX_RX_ID_MAP, (pkind & 0x3F));
492 static u8 cgx_get_lmac_type(void *cgxd, int lmac_id)
494 struct cgx *cgx = cgxd;
497 cfg = cgx_read(cgx, lmac_id, CGXX_CMRX_CFG);
498 return (cfg >> CGX_LMAC_TYPE_SHIFT) & CGX_LMAC_TYPE_MASK;
501 /* Configure CGX LMAC in internal loopback mode */
502 int cgx_lmac_internal_loopback(void *cgxd, int lmac_id, bool enable)
504 struct cgx *cgx = cgxd;
508 if (!is_lmac_valid(cgx, lmac_id))
511 lmac_type = cgx->mac_ops->get_lmac_type(cgx, lmac_id);
512 if (lmac_type == LMAC_MODE_SGMII || lmac_type == LMAC_MODE_QSGMII) {
513 cfg = cgx_read(cgx, lmac_id, CGXX_GMP_PCS_MRX_CTL);
515 cfg |= CGXX_GMP_PCS_MRX_CTL_LBK;
517 cfg &= ~CGXX_GMP_PCS_MRX_CTL_LBK;
518 cgx_write(cgx, lmac_id, CGXX_GMP_PCS_MRX_CTL, cfg);
520 cfg = cgx_read(cgx, lmac_id, CGXX_SPUX_CONTROL1);
522 cfg |= CGXX_SPUX_CONTROL1_LBK;
524 cfg &= ~CGXX_SPUX_CONTROL1_LBK;
525 cgx_write(cgx, lmac_id, CGXX_SPUX_CONTROL1, cfg);
530 void cgx_lmac_promisc_config(int cgx_id, int lmac_id, bool enable)
532 struct cgx *cgx = cgx_get_pdata(cgx_id);
533 struct lmac *lmac = lmac_pdata(lmac_id, cgx);
534 u16 max_dmac = lmac->mac_to_index_bmap.max;
535 struct mac_ops *mac_ops;
543 id = get_sequence_id_of_lmac(cgx, lmac_id);
545 mac_ops = cgx->mac_ops;
547 /* Enable promiscuous mode on LMAC */
548 cfg = cgx_read(cgx, lmac_id, CGXX_CMRX_RX_DMAC_CTL0);
549 cfg &= ~CGX_DMAC_CAM_ACCEPT;
550 cfg |= (CGX_DMAC_BCAST_MODE | CGX_DMAC_MCAST_MODE);
551 cgx_write(cgx, lmac_id, CGXX_CMRX_RX_DMAC_CTL0, cfg);
553 for (i = 0; i < max_dmac; i++) {
554 index = id * max_dmac + i;
555 cfg = cgx_read(cgx, 0,
556 (CGXX_CMRX_RX_DMAC_CAM0 + index * 0x8));
557 cfg &= ~CGX_DMAC_CAM_ADDR_ENABLE;
559 (CGXX_CMRX_RX_DMAC_CAM0 + index * 0x8), cfg);
562 /* Disable promiscuous mode */
563 cfg = cgx_read(cgx, lmac_id, CGXX_CMRX_RX_DMAC_CTL0);
564 cfg |= CGX_DMAC_CAM_ACCEPT | CGX_DMAC_MCAST_MODE;
565 cgx_write(cgx, lmac_id, CGXX_CMRX_RX_DMAC_CTL0, cfg);
566 for (i = 0; i < max_dmac; i++) {
567 index = id * max_dmac + i;
568 cfg = cgx_read(cgx, 0,
569 (CGXX_CMRX_RX_DMAC_CAM0 + index * 0x8));
570 if ((cfg & CGX_RX_DMAC_ADR_MASK) != 0) {
571 cfg |= CGX_DMAC_CAM_ADDR_ENABLE;
573 (CGXX_CMRX_RX_DMAC_CAM0 +
581 /* Enable or disable forwarding received pause frames to Tx block */
582 void cgx_lmac_enadis_rx_pause_fwding(void *cgxd, int lmac_id, bool enable)
584 struct cgx *cgx = cgxd;
591 cfg = cgx_read(cgx, lmac_id, CGXX_GMP_GMI_RXX_FRM_CTL);
592 cfg |= CGX_GMP_GMI_RXX_FRM_CTL_CTL_BCK;
593 cgx_write(cgx, lmac_id, CGXX_GMP_GMI_RXX_FRM_CTL, cfg);
595 cfg = cgx_read(cgx, lmac_id, CGXX_SMUX_RX_FRM_CTL);
596 cfg |= CGX_SMUX_RX_FRM_CTL_CTL_BCK;
597 cgx_write(cgx, lmac_id, CGXX_SMUX_RX_FRM_CTL, cfg);
599 cfg = cgx_read(cgx, lmac_id, CGXX_GMP_GMI_RXX_FRM_CTL);
600 cfg &= ~CGX_GMP_GMI_RXX_FRM_CTL_CTL_BCK;
601 cgx_write(cgx, lmac_id, CGXX_GMP_GMI_RXX_FRM_CTL, cfg);
603 cfg = cgx_read(cgx, lmac_id, CGXX_SMUX_RX_FRM_CTL);
604 cfg &= ~CGX_SMUX_RX_FRM_CTL_CTL_BCK;
605 cgx_write(cgx, lmac_id, CGXX_SMUX_RX_FRM_CTL, cfg);
609 int cgx_get_rx_stats(void *cgxd, int lmac_id, int idx, u64 *rx_stat)
611 struct cgx *cgx = cgxd;
613 if (!is_lmac_valid(cgx, lmac_id))
615 *rx_stat = cgx_read(cgx, lmac_id, CGXX_CMRX_RX_STAT0 + (idx * 8));
619 int cgx_get_tx_stats(void *cgxd, int lmac_id, int idx, u64 *tx_stat)
621 struct cgx *cgx = cgxd;
623 if (!is_lmac_valid(cgx, lmac_id))
625 *tx_stat = cgx_read(cgx, lmac_id, CGXX_CMRX_TX_STAT0 + (idx * 8));
629 u64 cgx_features_get(void *cgxd)
631 return ((struct cgx *)cgxd)->hw_features;
634 static int cgx_set_fec_stats_count(struct cgx_link_user_info *linfo)
639 switch (linfo->lmac_type_id) {
640 case LMAC_MODE_SGMII:
642 case LMAC_MODE_RXAUI:
643 case LMAC_MODE_QSGMII:
645 case LMAC_MODE_10G_R:
646 case LMAC_MODE_25G_R:
647 case LMAC_MODE_100G_R:
648 case LMAC_MODE_USXGMII:
650 case LMAC_MODE_40G_R:
652 case LMAC_MODE_50G_R:
653 if (linfo->fec == OTX2_FEC_BASER)
662 int cgx_get_fec_stats(void *cgxd, int lmac_id, struct cgx_fec_stats_rsp *rsp)
664 int stats, fec_stats_count = 0;
665 int corr_reg, uncorr_reg;
666 struct cgx *cgx = cgxd;
668 if (!cgx || lmac_id >= cgx->lmac_count)
671 cgx_set_fec_stats_count(&cgx->lmac_idmap[lmac_id]->link_info);
672 if (cgx->lmac_idmap[lmac_id]->link_info.fec == OTX2_FEC_BASER) {
673 corr_reg = CGXX_SPUX_LNX_FEC_CORR_BLOCKS;
674 uncorr_reg = CGXX_SPUX_LNX_FEC_UNCORR_BLOCKS;
676 corr_reg = CGXX_SPUX_RSFEC_CORR;
677 uncorr_reg = CGXX_SPUX_RSFEC_UNCORR;
679 for (stats = 0; stats < fec_stats_count; stats++) {
680 rsp->fec_corr_blks +=
681 cgx_read(cgx, lmac_id, corr_reg + (stats * 8));
682 rsp->fec_uncorr_blks +=
683 cgx_read(cgx, lmac_id, uncorr_reg + (stats * 8));
688 int cgx_lmac_rx_tx_enable(void *cgxd, int lmac_id, bool enable)
690 struct cgx *cgx = cgxd;
693 if (!is_lmac_valid(cgx, lmac_id))
696 cfg = cgx_read(cgx, lmac_id, CGXX_CMRX_CFG);
698 cfg |= CMR_EN | DATA_PKT_RX_EN | DATA_PKT_TX_EN;
700 cfg &= ~(CMR_EN | DATA_PKT_RX_EN | DATA_PKT_TX_EN);
701 cgx_write(cgx, lmac_id, CGXX_CMRX_CFG, cfg);
705 int cgx_lmac_tx_enable(void *cgxd, int lmac_id, bool enable)
707 struct cgx *cgx = cgxd;
710 if (!is_lmac_valid(cgx, lmac_id))
713 cfg = cgx_read(cgx, lmac_id, CGXX_CMRX_CFG);
716 cfg |= DATA_PKT_TX_EN;
718 cfg &= ~DATA_PKT_TX_EN;
721 cgx_write(cgx, lmac_id, CGXX_CMRX_CFG, cfg);
722 return !!(last & DATA_PKT_TX_EN);
725 static int cgx_lmac_get_pause_frm_status(void *cgxd, int lmac_id,
726 u8 *tx_pause, u8 *rx_pause)
728 struct cgx *cgx = cgxd;
734 if (!is_lmac_valid(cgx, lmac_id))
737 cfg = cgx_read(cgx, lmac_id, CGXX_SMUX_RX_FRM_CTL);
738 *rx_pause = !!(cfg & CGX_SMUX_RX_FRM_CTL_CTL_BCK);
740 cfg = cgx_read(cgx, lmac_id, CGXX_SMUX_TX_CTL);
741 *tx_pause = !!(cfg & CGX_SMUX_TX_CTL_L2P_BP_CONV);
745 static int cgx_lmac_enadis_pause_frm(void *cgxd, int lmac_id,
746 u8 tx_pause, u8 rx_pause)
748 struct cgx *cgx = cgxd;
754 if (!is_lmac_valid(cgx, lmac_id))
757 cfg = cgx_read(cgx, lmac_id, CGXX_SMUX_RX_FRM_CTL);
758 cfg &= ~CGX_SMUX_RX_FRM_CTL_CTL_BCK;
759 cfg |= rx_pause ? CGX_SMUX_RX_FRM_CTL_CTL_BCK : 0x0;
760 cgx_write(cgx, lmac_id, CGXX_SMUX_RX_FRM_CTL, cfg);
762 cfg = cgx_read(cgx, lmac_id, CGXX_SMUX_TX_CTL);
763 cfg &= ~CGX_SMUX_TX_CTL_L2P_BP_CONV;
764 cfg |= tx_pause ? CGX_SMUX_TX_CTL_L2P_BP_CONV : 0x0;
765 cgx_write(cgx, lmac_id, CGXX_SMUX_TX_CTL, cfg);
767 cfg = cgx_read(cgx, 0, CGXX_CMR_RX_OVR_BP);
769 cfg &= ~CGX_CMR_RX_OVR_BP_EN(lmac_id);
771 cfg |= CGX_CMR_RX_OVR_BP_EN(lmac_id);
772 cfg &= ~CGX_CMR_RX_OVR_BP_BP(lmac_id);
774 cgx_write(cgx, 0, CGXX_CMR_RX_OVR_BP, cfg);
778 static void cgx_lmac_pause_frm_config(void *cgxd, int lmac_id, bool enable)
780 struct cgx *cgx = cgxd;
783 if (!is_lmac_valid(cgx, lmac_id))
786 /* Enable receive pause frames */
787 cfg = cgx_read(cgx, lmac_id, CGXX_SMUX_RX_FRM_CTL);
788 cfg |= CGX_SMUX_RX_FRM_CTL_CTL_BCK;
789 cgx_write(cgx, lmac_id, CGXX_SMUX_RX_FRM_CTL, cfg);
791 cfg = cgx_read(cgx, lmac_id, CGXX_GMP_GMI_RXX_FRM_CTL);
792 cfg |= CGX_GMP_GMI_RXX_FRM_CTL_CTL_BCK;
793 cgx_write(cgx, lmac_id, CGXX_GMP_GMI_RXX_FRM_CTL, cfg);
795 /* Enable pause frames transmission */
796 cfg = cgx_read(cgx, lmac_id, CGXX_SMUX_TX_CTL);
797 cfg |= CGX_SMUX_TX_CTL_L2P_BP_CONV;
798 cgx_write(cgx, lmac_id, CGXX_SMUX_TX_CTL, cfg);
800 /* Set pause time and interval */
801 cgx_write(cgx, lmac_id, CGXX_SMUX_TX_PAUSE_PKT_TIME,
803 cfg = cgx_read(cgx, lmac_id, CGXX_SMUX_TX_PAUSE_PKT_INTERVAL);
805 cgx_write(cgx, lmac_id, CGXX_SMUX_TX_PAUSE_PKT_INTERVAL,
806 cfg | (DEFAULT_PAUSE_TIME / 2));
808 cgx_write(cgx, lmac_id, CGXX_GMP_GMI_TX_PAUSE_PKT_TIME,
811 cfg = cgx_read(cgx, lmac_id,
812 CGXX_GMP_GMI_TX_PAUSE_PKT_INTERVAL);
814 cgx_write(cgx, lmac_id, CGXX_GMP_GMI_TX_PAUSE_PKT_INTERVAL,
815 cfg | (DEFAULT_PAUSE_TIME / 2));
817 /* ALL pause frames received are completely ignored */
818 cfg = cgx_read(cgx, lmac_id, CGXX_SMUX_RX_FRM_CTL);
819 cfg &= ~CGX_SMUX_RX_FRM_CTL_CTL_BCK;
820 cgx_write(cgx, lmac_id, CGXX_SMUX_RX_FRM_CTL, cfg);
822 cfg = cgx_read(cgx, lmac_id, CGXX_GMP_GMI_RXX_FRM_CTL);
823 cfg &= ~CGX_GMP_GMI_RXX_FRM_CTL_CTL_BCK;
824 cgx_write(cgx, lmac_id, CGXX_GMP_GMI_RXX_FRM_CTL, cfg);
826 /* Disable pause frames transmission */
827 cfg = cgx_read(cgx, lmac_id, CGXX_SMUX_TX_CTL);
828 cfg &= ~CGX_SMUX_TX_CTL_L2P_BP_CONV;
829 cgx_write(cgx, lmac_id, CGXX_SMUX_TX_CTL, cfg);
833 void cgx_lmac_ptp_config(void *cgxd, int lmac_id, bool enable)
835 struct cgx *cgx = cgxd;
845 /* Enable inbound PTP timestamping */
846 cfg = cgx_read(cgx, lmac_id, CGXX_GMP_GMI_RXX_FRM_CTL);
847 cfg |= CGX_GMP_GMI_RXX_FRM_CTL_PTP_MODE;
848 cgx_write(cgx, lmac_id, CGXX_GMP_GMI_RXX_FRM_CTL, cfg);
850 cfg = cgx_read(cgx, lmac_id, CGXX_SMUX_RX_FRM_CTL);
851 cfg |= CGX_SMUX_RX_FRM_CTL_PTP_MODE;
852 cgx_write(cgx, lmac_id, CGXX_SMUX_RX_FRM_CTL, cfg);
854 /* Disable inbound PTP stamping */
855 cfg = cgx_read(cgx, lmac_id, CGXX_GMP_GMI_RXX_FRM_CTL);
856 cfg &= ~CGX_GMP_GMI_RXX_FRM_CTL_PTP_MODE;
857 cgx_write(cgx, lmac_id, CGXX_GMP_GMI_RXX_FRM_CTL, cfg);
859 cfg = cgx_read(cgx, lmac_id, CGXX_SMUX_RX_FRM_CTL);
860 cfg &= ~CGX_SMUX_RX_FRM_CTL_PTP_MODE;
861 cgx_write(cgx, lmac_id, CGXX_SMUX_RX_FRM_CTL, cfg);
865 /* CGX Firmware interface low level support */
866 int cgx_fwi_cmd_send(u64 req, u64 *resp, struct lmac *lmac)
868 struct cgx *cgx = lmac->cgx;
873 /* Ensure no other command is in progress */
874 err = mutex_lock_interruptible(&lmac->cmd_lock);
878 /* Ensure command register is free */
879 cmd = cgx_read(cgx, lmac->lmac_id, CGX_COMMAND_REG);
880 if (FIELD_GET(CMDREG_OWN, cmd) != CGX_CMD_OWN_NS) {
885 /* Update ownership in command request */
886 req = FIELD_SET(CMDREG_OWN, CGX_CMD_OWN_FIRMWARE, req);
888 /* Mark this lmac as pending, before we start */
889 lmac->cmd_pend = true;
891 /* Start command in hardware */
892 cgx_write(cgx, lmac->lmac_id, CGX_COMMAND_REG, req);
894 /* Ensure command is completed without errors */
895 if (!wait_event_timeout(lmac->wq_cmd_cmplt, !lmac->cmd_pend,
896 msecs_to_jiffies(CGX_CMD_TIMEOUT))) {
897 dev = &cgx->pdev->dev;
898 dev_err(dev, "cgx port %d:%d cmd timeout\n",
899 cgx->cgx_id, lmac->lmac_id);
904 /* we have a valid command response */
905 smp_rmb(); /* Ensure the latest updates are visible */
909 mutex_unlock(&lmac->cmd_lock);
914 int cgx_fwi_cmd_generic(u64 req, u64 *resp, struct cgx *cgx, int lmac_id)
919 lmac = lmac_pdata(lmac_id, cgx);
923 err = cgx_fwi_cmd_send(req, resp, lmac);
925 /* Check for valid response */
927 if (FIELD_GET(EVTREG_STAT, *resp) == CGX_STAT_FAIL)
936 static int cgx_link_usertable_index_map(int speed)
942 return CGX_LINK_100M;
962 return CGX_LINK_100G;
964 return CGX_LINK_NONE;
966 return CGX_LINK_NONE;
969 static void set_mod_args(struct cgx_set_link_mode_args *args,
970 u32 speed, u8 duplex, u8 autoneg, u64 mode)
972 /* Fill default values incase of user did not pass
975 if (args->duplex == DUPLEX_UNKNOWN)
976 args->duplex = duplex;
977 if (args->speed == SPEED_UNKNOWN)
979 if (args->an == AUTONEG_UNKNOWN)
985 static void otx2_map_ethtool_link_modes(u64 bitmask,
986 struct cgx_set_link_mode_args *args)
989 case ETHTOOL_LINK_MODE_10baseT_Half_BIT:
990 set_mod_args(args, 10, 1, 1, BIT_ULL(CGX_MODE_SGMII));
992 case ETHTOOL_LINK_MODE_10baseT_Full_BIT:
993 set_mod_args(args, 10, 0, 1, BIT_ULL(CGX_MODE_SGMII));
995 case ETHTOOL_LINK_MODE_100baseT_Half_BIT:
996 set_mod_args(args, 100, 1, 1, BIT_ULL(CGX_MODE_SGMII));
998 case ETHTOOL_LINK_MODE_100baseT_Full_BIT:
999 set_mod_args(args, 100, 0, 1, BIT_ULL(CGX_MODE_SGMII));
1001 case ETHTOOL_LINK_MODE_1000baseT_Half_BIT:
1002 set_mod_args(args, 1000, 1, 1, BIT_ULL(CGX_MODE_SGMII));
1004 case ETHTOOL_LINK_MODE_1000baseT_Full_BIT:
1005 set_mod_args(args, 1000, 0, 1, BIT_ULL(CGX_MODE_SGMII));
1007 case ETHTOOL_LINK_MODE_1000baseX_Full_BIT:
1008 set_mod_args(args, 1000, 0, 0, BIT_ULL(CGX_MODE_1000_BASEX));
1010 case ETHTOOL_LINK_MODE_10000baseT_Full_BIT:
1011 set_mod_args(args, 1000, 0, 1, BIT_ULL(CGX_MODE_QSGMII));
1013 case ETHTOOL_LINK_MODE_10000baseSR_Full_BIT:
1014 set_mod_args(args, 10000, 0, 0, BIT_ULL(CGX_MODE_10G_C2C));
1016 case ETHTOOL_LINK_MODE_10000baseLR_Full_BIT:
1017 set_mod_args(args, 10000, 0, 0, BIT_ULL(CGX_MODE_10G_C2M));
1019 case ETHTOOL_LINK_MODE_10000baseKR_Full_BIT:
1020 set_mod_args(args, 10000, 0, 1, BIT_ULL(CGX_MODE_10G_KR));
1022 case ETHTOOL_LINK_MODE_25000baseSR_Full_BIT:
1023 set_mod_args(args, 25000, 0, 0, BIT_ULL(CGX_MODE_25G_C2C));
1025 case ETHTOOL_LINK_MODE_25000baseCR_Full_BIT:
1026 set_mod_args(args, 25000, 0, 1, BIT_ULL(CGX_MODE_25G_CR));
1028 case ETHTOOL_LINK_MODE_25000baseKR_Full_BIT:
1029 set_mod_args(args, 25000, 0, 1, BIT_ULL(CGX_MODE_25G_KR));
1031 case ETHTOOL_LINK_MODE_40000baseSR4_Full_BIT:
1032 set_mod_args(args, 40000, 0, 0, BIT_ULL(CGX_MODE_40G_C2C));
1034 case ETHTOOL_LINK_MODE_40000baseLR4_Full_BIT:
1035 set_mod_args(args, 40000, 0, 0, BIT_ULL(CGX_MODE_40G_C2M));
1037 case ETHTOOL_LINK_MODE_40000baseCR4_Full_BIT:
1038 set_mod_args(args, 40000, 0, 1, BIT_ULL(CGX_MODE_40G_CR4));
1040 case ETHTOOL_LINK_MODE_40000baseKR4_Full_BIT:
1041 set_mod_args(args, 40000, 0, 1, BIT_ULL(CGX_MODE_40G_KR4));
1043 case ETHTOOL_LINK_MODE_50000baseSR_Full_BIT:
1044 set_mod_args(args, 50000, 0, 0, BIT_ULL(CGX_MODE_50G_C2C));
1046 case ETHTOOL_LINK_MODE_50000baseLR_ER_FR_Full_BIT:
1047 set_mod_args(args, 50000, 0, 0, BIT_ULL(CGX_MODE_50G_C2M));
1049 case ETHTOOL_LINK_MODE_50000baseCR_Full_BIT:
1050 set_mod_args(args, 50000, 0, 1, BIT_ULL(CGX_MODE_50G_CR));
1052 case ETHTOOL_LINK_MODE_50000baseKR_Full_BIT:
1053 set_mod_args(args, 50000, 0, 1, BIT_ULL(CGX_MODE_50G_KR));
1055 case ETHTOOL_LINK_MODE_100000baseSR4_Full_BIT:
1056 set_mod_args(args, 100000, 0, 0, BIT_ULL(CGX_MODE_100G_C2C));
1058 case ETHTOOL_LINK_MODE_100000baseLR4_ER4_Full_BIT:
1059 set_mod_args(args, 100000, 0, 0, BIT_ULL(CGX_MODE_100G_C2M));
1061 case ETHTOOL_LINK_MODE_100000baseCR4_Full_BIT:
1062 set_mod_args(args, 100000, 0, 1, BIT_ULL(CGX_MODE_100G_CR4));
1064 case ETHTOOL_LINK_MODE_100000baseKR4_Full_BIT:
1065 set_mod_args(args, 100000, 0, 1, BIT_ULL(CGX_MODE_100G_KR4));
1068 set_mod_args(args, 0, 1, 0, BIT_ULL(CGX_MODE_MAX));
1073 static inline void link_status_user_format(u64 lstat,
1074 struct cgx_link_user_info *linfo,
1075 struct cgx *cgx, u8 lmac_id)
1077 const char *lmac_string;
1079 linfo->link_up = FIELD_GET(RESP_LINKSTAT_UP, lstat);
1080 linfo->full_duplex = FIELD_GET(RESP_LINKSTAT_FDUPLEX, lstat);
1081 linfo->speed = cgx_speed_mbps[FIELD_GET(RESP_LINKSTAT_SPEED, lstat)];
1082 linfo->an = FIELD_GET(RESP_LINKSTAT_AN, lstat);
1083 linfo->fec = FIELD_GET(RESP_LINKSTAT_FEC, lstat);
1084 linfo->lmac_type_id = cgx_get_lmac_type(cgx, lmac_id);
1085 lmac_string = cgx_lmactype_string[linfo->lmac_type_id];
1086 strncpy(linfo->lmac_type, lmac_string, LMACTYPE_STR_LEN - 1);
1089 /* Hardware event handlers */
1090 static inline void cgx_link_change_handler(u64 lstat,
1093 struct cgx_link_user_info *linfo;
1094 struct cgx *cgx = lmac->cgx;
1095 struct cgx_link_event event;
1099 dev = &cgx->pdev->dev;
1101 link_status_user_format(lstat, &event.link_uinfo, cgx, lmac->lmac_id);
1102 err_type = FIELD_GET(RESP_LINKSTAT_ERRTYPE, lstat);
1104 event.cgx_id = cgx->cgx_id;
1105 event.lmac_id = lmac->lmac_id;
1107 /* update the local copy of link status */
1108 lmac->link_info = event.link_uinfo;
1109 linfo = &lmac->link_info;
1111 if (err_type == CGX_ERR_SPEED_CHANGE_INVALID)
1114 /* Ensure callback doesn't get unregistered until we finish it */
1115 spin_lock(&lmac->event_cb_lock);
1117 if (!lmac->event_cb.notify_link_chg) {
1118 dev_dbg(dev, "cgx port %d:%d Link change handler null",
1119 cgx->cgx_id, lmac->lmac_id);
1120 if (err_type != CGX_ERR_NONE) {
1121 dev_err(dev, "cgx port %d:%d Link error %d\n",
1122 cgx->cgx_id, lmac->lmac_id, err_type);
1124 dev_info(dev, "cgx port %d:%d Link is %s %d Mbps\n",
1125 cgx->cgx_id, lmac->lmac_id,
1126 linfo->link_up ? "UP" : "DOWN", linfo->speed);
1130 if (lmac->event_cb.notify_link_chg(&event, lmac->event_cb.data))
1131 dev_err(dev, "event notification failure\n");
1133 spin_unlock(&lmac->event_cb_lock);
1136 static inline bool cgx_cmdresp_is_linkevent(u64 event)
1140 id = FIELD_GET(EVTREG_ID, event);
1141 if (id == CGX_CMD_LINK_BRING_UP ||
1142 id == CGX_CMD_LINK_BRING_DOWN ||
1143 id == CGX_CMD_MODE_CHANGE)
1149 static inline bool cgx_event_is_linkevent(u64 event)
1151 if (FIELD_GET(EVTREG_ID, event) == CGX_EVT_LINK_CHANGE)
1157 static irqreturn_t cgx_fwi_event_handler(int irq, void *data)
1159 u64 event, offset, clear_bit;
1160 struct lmac *lmac = data;
1165 /* Clear SW_INT for RPM and CMR_INT for CGX */
1166 offset = cgx->mac_ops->int_register;
1167 clear_bit = cgx->mac_ops->int_ena_bit;
1169 event = cgx_read(cgx, lmac->lmac_id, CGX_EVENT_REG);
1171 if (!FIELD_GET(EVTREG_ACK, event))
1174 switch (FIELD_GET(EVTREG_EVT_TYPE, event)) {
1175 case CGX_EVT_CMD_RESP:
1176 /* Copy the response. Since only one command is active at a
1177 * time, there is no way a response can get overwritten
1180 /* Ensure response is updated before thread context starts */
1183 /* There wont be separate events for link change initiated from
1184 * software; Hence report the command responses as events
1186 if (cgx_cmdresp_is_linkevent(event))
1187 cgx_link_change_handler(event, lmac);
1189 /* Release thread waiting for completion */
1190 lmac->cmd_pend = false;
1191 wake_up_interruptible(&lmac->wq_cmd_cmplt);
1194 if (cgx_event_is_linkevent(event))
1195 cgx_link_change_handler(event, lmac);
1199 /* Any new event or command response will be posted by firmware
1200 * only after the current status is acked.
1201 * Ack the interrupt register as well.
1203 cgx_write(lmac->cgx, lmac->lmac_id, CGX_EVENT_REG, 0);
1204 cgx_write(lmac->cgx, lmac->lmac_id, offset, clear_bit);
1209 /* APIs for PHY management using CGX firmware interface */
1211 /* callback registration for hardware events like link change */
1212 int cgx_lmac_evh_register(struct cgx_event_cb *cb, void *cgxd, int lmac_id)
1214 struct cgx *cgx = cgxd;
1217 lmac = lmac_pdata(lmac_id, cgx);
1221 lmac->event_cb = *cb;
1226 int cgx_lmac_evh_unregister(void *cgxd, int lmac_id)
1229 unsigned long flags;
1230 struct cgx *cgx = cgxd;
1232 lmac = lmac_pdata(lmac_id, cgx);
1236 spin_lock_irqsave(&lmac->event_cb_lock, flags);
1237 lmac->event_cb.notify_link_chg = NULL;
1238 lmac->event_cb.data = NULL;
1239 spin_unlock_irqrestore(&lmac->event_cb_lock, flags);
1244 int cgx_get_fwdata_base(u64 *base)
1251 cgx = list_first_entry_or_null(&cgx_list, struct cgx, cgx_list);
1255 first_lmac = find_first_bit(&cgx->lmac_bmap, MAX_LMAC_PER_CGX);
1256 req = FIELD_SET(CMDREG_ID, CGX_CMD_GET_FWD_BASE, req);
1257 err = cgx_fwi_cmd_generic(req, &resp, cgx, first_lmac);
1259 *base = FIELD_GET(RESP_FWD_BASE, resp);
1264 int cgx_set_link_mode(void *cgxd, struct cgx_set_link_mode_args args,
1265 int cgx_id, int lmac_id)
1267 struct cgx *cgx = cgxd;
1274 otx2_map_ethtool_link_modes(args.mode, &args);
1275 if (!args.speed && args.duplex && !args.an)
1278 req = FIELD_SET(CMDREG_ID, CGX_CMD_MODE_CHANGE, req);
1279 req = FIELD_SET(CMDMODECHANGE_SPEED,
1280 cgx_link_usertable_index_map(args.speed), req);
1281 req = FIELD_SET(CMDMODECHANGE_DUPLEX, args.duplex, req);
1282 req = FIELD_SET(CMDMODECHANGE_AN, args.an, req);
1283 req = FIELD_SET(CMDMODECHANGE_PORT, args.ports, req);
1284 req = FIELD_SET(CMDMODECHANGE_FLAGS, args.mode, req);
1286 return cgx_fwi_cmd_generic(req, &resp, cgx, lmac_id);
1288 int cgx_set_fec(u64 fec, int cgx_id, int lmac_id)
1294 cgx = cgx_get_pdata(cgx_id);
1298 req = FIELD_SET(CMDREG_ID, CGX_CMD_SET_FEC, req);
1299 req = FIELD_SET(CMDSETFEC, fec, req);
1300 err = cgx_fwi_cmd_generic(req, &resp, cgx, lmac_id);
1304 cgx->lmac_idmap[lmac_id]->link_info.fec =
1305 FIELD_GET(RESP_LINKSTAT_FEC, resp);
1306 return cgx->lmac_idmap[lmac_id]->link_info.fec;
1309 int cgx_get_phy_fec_stats(void *cgxd, int lmac_id)
1311 struct cgx *cgx = cgxd;
1317 req = FIELD_SET(CMDREG_ID, CGX_CMD_GET_PHY_FEC_STATS, req);
1318 return cgx_fwi_cmd_generic(req, &resp, cgx, lmac_id);
1321 static int cgx_fwi_link_change(struct cgx *cgx, int lmac_id, bool enable)
1327 req = FIELD_SET(CMDREG_ID, CGX_CMD_LINK_BRING_UP, req);
1329 req = FIELD_SET(CMDREG_ID, CGX_CMD_LINK_BRING_DOWN, req);
1331 return cgx_fwi_cmd_generic(req, &resp, cgx, lmac_id);
1334 static inline int cgx_fwi_read_version(u64 *resp, struct cgx *cgx)
1336 int first_lmac = find_first_bit(&cgx->lmac_bmap, MAX_LMAC_PER_CGX);
1339 req = FIELD_SET(CMDREG_ID, CGX_CMD_GET_FW_VER, req);
1340 return cgx_fwi_cmd_generic(req, resp, cgx, first_lmac);
1343 static int cgx_lmac_verify_fwi_version(struct cgx *cgx)
1345 struct device *dev = &cgx->pdev->dev;
1346 int major_ver, minor_ver;
1350 if (!cgx->lmac_count)
1353 err = cgx_fwi_read_version(&resp, cgx);
1357 major_ver = FIELD_GET(RESP_MAJOR_VER, resp);
1358 minor_ver = FIELD_GET(RESP_MINOR_VER, resp);
1359 dev_dbg(dev, "Firmware command interface version = %d.%d\n",
1360 major_ver, minor_ver);
1361 if (major_ver != CGX_FIRMWARE_MAJOR_VER)
1367 static void cgx_lmac_linkup_work(struct work_struct *work)
1369 struct cgx *cgx = container_of(work, struct cgx, cgx_cmd_work);
1370 struct device *dev = &cgx->pdev->dev;
1373 /* Do Link up for all the enabled lmacs */
1374 for_each_set_bit(i, &cgx->lmac_bmap, MAX_LMAC_PER_CGX) {
1375 err = cgx_fwi_link_change(cgx, i, true);
1377 dev_info(dev, "cgx port %d:%d Link up command failed\n",
1382 int cgx_lmac_linkup_start(void *cgxd)
1384 struct cgx *cgx = cgxd;
1389 queue_work(cgx->cgx_cmd_workq, &cgx->cgx_cmd_work);
1394 static void cgx_lmac_get_fifolen(struct cgx *cgx)
1398 cfg = cgx_read(cgx, 0, CGX_CONST);
1399 cgx->mac_ops->fifo_len = FIELD_GET(CGX_CONST_RXFIFO_SIZE, cfg);
1402 static int cgx_configure_interrupt(struct cgx *cgx, struct lmac *lmac,
1403 int cnt, bool req_free)
1405 struct mac_ops *mac_ops = cgx->mac_ops;
1406 u64 offset, ena_bit;
1410 irq = pci_irq_vector(cgx->pdev, mac_ops->lmac_fwi +
1411 cnt * mac_ops->irq_offset);
1412 offset = mac_ops->int_set_reg;
1413 ena_bit = mac_ops->int_ena_bit;
1416 free_irq(irq, lmac);
1420 err = request_irq(irq, cgx_fwi_event_handler, 0, lmac->name, lmac);
1424 /* Enable interrupt */
1425 cgx_write(cgx, lmac->lmac_id, offset, ena_bit);
1429 int cgx_get_nr_lmacs(void *cgxd)
1431 struct cgx *cgx = cgxd;
1433 return cgx_read(cgx, 0, CGXX_CMRX_RX_LMACS) & 0x7ULL;
1436 u8 cgx_get_lmacid(void *cgxd, u8 lmac_index)
1438 struct cgx *cgx = cgxd;
1440 return cgx->lmac_idmap[lmac_index]->lmac_id;
1443 unsigned long cgx_get_lmac_bmap(void *cgxd)
1445 struct cgx *cgx = cgxd;
1447 return cgx->lmac_bmap;
1450 static int cgx_lmac_init(struct cgx *cgx)
1456 cgx_lmac_get_fifolen(cgx);
1458 cgx->lmac_count = cgx->mac_ops->get_nr_lmacs(cgx);
1459 /* lmac_list specifies which lmacs are enabled
1460 * when bit n is set to 1, LMAC[n] is enabled
1462 if (cgx->mac_ops->non_contiguous_serdes_lane)
1463 lmac_list = cgx_read(cgx, 0, CGXX_CMRX_RX_LMACS) & 0xFULL;
1465 if (cgx->lmac_count > MAX_LMAC_PER_CGX)
1466 cgx->lmac_count = MAX_LMAC_PER_CGX;
1468 for (i = 0; i < cgx->lmac_count; i++) {
1469 lmac = kzalloc(sizeof(struct lmac), GFP_KERNEL);
1472 lmac->name = kcalloc(1, sizeof("cgx_fwi_xxx_yyy"), GFP_KERNEL);
1477 sprintf(lmac->name, "cgx_fwi_%d_%d", cgx->cgx_id, i);
1478 if (cgx->mac_ops->non_contiguous_serdes_lane) {
1479 lmac->lmac_id = __ffs64(lmac_list);
1480 lmac_list &= ~BIT_ULL(lmac->lmac_id);
1486 lmac->mac_to_index_bmap.max =
1487 MAX_DMAC_ENTRIES_PER_CGX / cgx->lmac_count;
1488 err = rvu_alloc_bitmap(&lmac->mac_to_index_bmap);
1492 /* Reserve first entry for default MAC address */
1493 set_bit(0, lmac->mac_to_index_bmap.bmap);
1495 init_waitqueue_head(&lmac->wq_cmd_cmplt);
1496 mutex_init(&lmac->cmd_lock);
1497 spin_lock_init(&lmac->event_cb_lock);
1498 err = cgx_configure_interrupt(cgx, lmac, lmac->lmac_id, false);
1503 cgx->lmac_idmap[lmac->lmac_id] = lmac;
1504 set_bit(lmac->lmac_id, &cgx->lmac_bmap);
1505 cgx->mac_ops->mac_pause_frm_config(cgx, lmac->lmac_id, true);
1508 return cgx_lmac_verify_fwi_version(cgx);
1517 static int cgx_lmac_exit(struct cgx *cgx)
1522 if (cgx->cgx_cmd_workq) {
1523 flush_workqueue(cgx->cgx_cmd_workq);
1524 destroy_workqueue(cgx->cgx_cmd_workq);
1525 cgx->cgx_cmd_workq = NULL;
1528 /* Free all lmac related resources */
1529 for_each_set_bit(i, &cgx->lmac_bmap, MAX_LMAC_PER_CGX) {
1530 lmac = cgx->lmac_idmap[i];
1533 cgx->mac_ops->mac_pause_frm_config(cgx, lmac->lmac_id, false);
1534 cgx_configure_interrupt(cgx, lmac, lmac->lmac_id, true);
1535 kfree(lmac->mac_to_index_bmap.bmap);
1543 static void cgx_populate_features(struct cgx *cgx)
1545 if (is_dev_rpm(cgx))
1546 cgx->hw_features = (RVU_MAC_RPM | RVU_LMAC_FEAT_FC);
1548 cgx->hw_features = (RVU_LMAC_FEAT_FC | RVU_LMAC_FEAT_PTP);
1551 static struct mac_ops cgx_mac_ops = {
1555 .int_register = CGXX_CMRX_INT,
1556 .int_set_reg = CGXX_CMRX_INT_ENA_W1S,
1558 .int_ena_bit = FW_CGX_INT,
1559 .lmac_fwi = CGX_LMAC_FWI,
1560 .non_contiguous_serdes_lane = false,
1563 .get_nr_lmacs = cgx_get_nr_lmacs,
1564 .get_lmac_type = cgx_get_lmac_type,
1565 .mac_lmac_intl_lbk = cgx_lmac_internal_loopback,
1566 .mac_get_rx_stats = cgx_get_rx_stats,
1567 .mac_get_tx_stats = cgx_get_tx_stats,
1568 .mac_enadis_rx_pause_fwding = cgx_lmac_enadis_rx_pause_fwding,
1569 .mac_get_pause_frm_status = cgx_lmac_get_pause_frm_status,
1570 .mac_enadis_pause_frm = cgx_lmac_enadis_pause_frm,
1571 .mac_pause_frm_config = cgx_lmac_pause_frm_config,
1574 static int cgx_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1576 struct device *dev = &pdev->dev;
1580 cgx = devm_kzalloc(dev, sizeof(*cgx), GFP_KERNEL);
1585 pci_set_drvdata(pdev, cgx);
1587 /* Use mac_ops to get MAC specific features */
1588 if (pdev->device == PCI_DEVID_CN10K_RPM)
1589 cgx->mac_ops = rpm_get_mac_ops();
1591 cgx->mac_ops = &cgx_mac_ops;
1593 err = pci_enable_device(pdev);
1595 dev_err(dev, "Failed to enable PCI device\n");
1596 pci_set_drvdata(pdev, NULL);
1600 err = pci_request_regions(pdev, DRV_NAME);
1602 dev_err(dev, "PCI request regions failed 0x%x\n", err);
1603 goto err_disable_device;
1606 /* MAP configuration registers */
1607 cgx->reg_base = pcim_iomap(pdev, PCI_CFG_REG_BAR_NUM, 0);
1608 if (!cgx->reg_base) {
1609 dev_err(dev, "CGX: Cannot map CSR memory space, aborting\n");
1611 goto err_release_regions;
1614 nvec = pci_msix_vec_count(cgx->pdev);
1615 err = pci_alloc_irq_vectors(pdev, nvec, nvec, PCI_IRQ_MSIX);
1616 if (err < 0 || err != nvec) {
1617 dev_err(dev, "Request for %d msix vectors failed, err %d\n",
1619 goto err_release_regions;
1622 cgx->cgx_id = (pci_resource_start(pdev, PCI_CFG_REG_BAR_NUM) >> 24)
1625 /* init wq for processing linkup requests */
1626 INIT_WORK(&cgx->cgx_cmd_work, cgx_lmac_linkup_work);
1627 cgx->cgx_cmd_workq = alloc_workqueue("cgx_cmd_workq", 0, 0);
1628 if (!cgx->cgx_cmd_workq) {
1629 dev_err(dev, "alloc workqueue failed for cgx cmd");
1631 goto err_free_irq_vectors;
1634 list_add(&cgx->cgx_list, &cgx_list);
1637 cgx_populate_features(cgx);
1639 mutex_init(&cgx->lock);
1641 err = cgx_lmac_init(cgx);
1643 goto err_release_lmac;
1649 list_del(&cgx->cgx_list);
1650 err_free_irq_vectors:
1651 pci_free_irq_vectors(pdev);
1652 err_release_regions:
1653 pci_release_regions(pdev);
1655 pci_disable_device(pdev);
1656 pci_set_drvdata(pdev, NULL);
1660 static void cgx_remove(struct pci_dev *pdev)
1662 struct cgx *cgx = pci_get_drvdata(pdev);
1666 list_del(&cgx->cgx_list);
1668 pci_free_irq_vectors(pdev);
1669 pci_release_regions(pdev);
1670 pci_disable_device(pdev);
1671 pci_set_drvdata(pdev, NULL);
1674 struct pci_driver cgx_driver = {
1676 .id_table = cgx_id_table,
1678 .remove = cgx_remove,