1 // SPDX-License-Identifier: GPL-2.0
3 * This file is based on code from OCTEON SDK by Cavium Networks.
5 * Copyright (c) 2003-2007 Cavium Networks
8 #include <linux/platform_device.h>
9 #include <linux/kernel.h>
10 #include <linux/module.h>
11 #include <linux/netdevice.h>
12 #include <linux/etherdevice.h>
13 #include <linux/phy.h>
14 #include <linux/slab.h>
15 #include <linux/interrupt.h>
16 #include <linux/of_net.h>
17 #include <linux/if_ether.h>
18 #include <linux/if_vlan.h>
22 #include "octeon-ethernet.h"
23 #include "ethernet-defines.h"
24 #include "ethernet-mem.h"
25 #include "ethernet-rx.h"
26 #include "ethernet-tx.h"
27 #include "ethernet-mdio.h"
28 #include "ethernet-util.h"
30 #define OCTEON_MAX_MTU 65392
32 static int num_packet_buffers = 1024;
33 module_param(num_packet_buffers, int, 0444);
34 MODULE_PARM_DESC(num_packet_buffers, "\n"
35 "\tNumber of packet buffers to allocate and store in the\n"
36 "\tFPA. By default, 1024 packet buffers are used.\n");
38 static int pow_receive_group = 15;
39 module_param(pow_receive_group, int, 0444);
40 MODULE_PARM_DESC(pow_receive_group, "\n"
41 "\tPOW group to receive packets from. All ethernet hardware\n"
42 "\twill be configured to send incoming packets to this POW\n"
43 "\tgroup. Also any other software can submit packets to this\n"
44 "\tgroup for the kernel to process.");
46 static int receive_group_order;
47 module_param(receive_group_order, int, 0444);
48 MODULE_PARM_DESC(receive_group_order, "\n"
49 "\tOrder (0..4) of receive groups to take into use. Ethernet hardware\n"
50 "\twill be configured to send incoming packets to multiple POW\n"
51 "\tgroups. pow_receive_group parameter is ignored when multiple\n"
52 "\tgroups are taken into use and groups are allocated starting\n"
53 "\tfrom 0. By default, a single group is used.\n");
55 int pow_send_group = -1;
56 module_param(pow_send_group, int, 0644);
57 MODULE_PARM_DESC(pow_send_group, "\n"
58 "\tPOW group to send packets to other software on. This\n"
59 "\tcontrols the creation of the virtual device pow0.\n"
60 "\talways_use_pow also depends on this value.");
63 module_param(always_use_pow, int, 0444);
64 MODULE_PARM_DESC(always_use_pow, "\n"
65 "\tWhen set, always send to the pow group. This will cause\n"
66 "\tpackets sent to real ethernet devices to be sent to the\n"
67 "\tPOW group instead of the hardware. Unless some other\n"
68 "\tapplication changes the config, packets will still be\n"
69 "\treceived from the low level hardware. Use this option\n"
70 "\tto allow a CVMX app to intercept all packets from the\n"
71 "\tlinux kernel. You must specify pow_send_group along with\n"
74 char pow_send_list[128] = "";
75 module_param_string(pow_send_list, pow_send_list, sizeof(pow_send_list), 0444);
76 MODULE_PARM_DESC(pow_send_list, "\n"
77 "\tComma separated list of ethernet devices that should use the\n"
78 "\tPOW for transmit instead of the actual ethernet hardware. This\n"
79 "\tis a per port version of always_use_pow. always_use_pow takes\n"
80 "\tprecedence over this list. For example, setting this to\n"
81 "\t\"eth2,spi3,spi7\" would cause these three devices to transmit\n"
82 "\tusing the pow_send_group.");
84 int rx_napi_weight = 32;
85 module_param(rx_napi_weight, int, 0444);
86 MODULE_PARM_DESC(rx_napi_weight, "The NAPI WEIGHT parameter.");
88 /* Mask indicating which receive groups are in use. */
89 int pow_receive_groups;
92 * cvm_oct_poll_queue_stopping - flag to indicate polling should stop.
94 * Set to one right before cvm_oct_poll_queue is destroyed.
96 atomic_t cvm_oct_poll_queue_stopping = ATOMIC_INIT(0);
99 * Array of every ethernet device owned by this driver indexed by
100 * the ipd input port number.
102 struct net_device *cvm_oct_device[TOTAL_NUMBER_OF_PORTS];
104 u64 cvm_oct_tx_poll_interval;
106 static void cvm_oct_rx_refill_worker(struct work_struct *work);
107 static DECLARE_DELAYED_WORK(cvm_oct_rx_refill_work, cvm_oct_rx_refill_worker);
109 static void cvm_oct_rx_refill_worker(struct work_struct *work)
112 * FPA 0 may have been drained, try to refill it if we need
113 * more than num_packet_buffers / 2, otherwise normal receive
114 * processing will refill it. If it were drained, no packets
115 * could be received so cvm_oct_napi_poll would never be
116 * invoked to do the refill.
118 cvm_oct_rx_refill_pool(num_packet_buffers / 2);
120 if (!atomic_read(&cvm_oct_poll_queue_stopping))
121 schedule_delayed_work(&cvm_oct_rx_refill_work, HZ);
124 static void cvm_oct_periodic_worker(struct work_struct *work)
126 struct octeon_ethernet *priv = container_of(work,
127 struct octeon_ethernet,
128 port_periodic_work.work);
131 priv->poll(cvm_oct_device[priv->port]);
133 cvm_oct_device[priv->port]->netdev_ops->ndo_get_stats
134 (cvm_oct_device[priv->port]);
136 if (!atomic_read(&cvm_oct_poll_queue_stopping))
137 schedule_delayed_work(&priv->port_periodic_work, HZ);
140 static void cvm_oct_configure_common_hw(void)
144 cvm_oct_mem_fill_fpa(CVMX_FPA_PACKET_POOL, CVMX_FPA_PACKET_POOL_SIZE,
146 cvm_oct_mem_fill_fpa(CVMX_FPA_WQE_POOL, CVMX_FPA_WQE_POOL_SIZE,
148 if (CVMX_FPA_OUTPUT_BUFFER_POOL != CVMX_FPA_PACKET_POOL)
149 cvm_oct_mem_fill_fpa(CVMX_FPA_OUTPUT_BUFFER_POOL,
150 CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE, 1024);
152 #ifdef __LITTLE_ENDIAN
154 union cvmx_ipd_ctl_status ipd_ctl_status;
156 ipd_ctl_status.u64 = cvmx_read_csr(CVMX_IPD_CTL_STATUS);
157 ipd_ctl_status.s.pkt_lend = 1;
158 ipd_ctl_status.s.wqe_lend = 1;
159 cvmx_write_csr(CVMX_IPD_CTL_STATUS, ipd_ctl_status.u64);
163 cvmx_helper_setup_red(num_packet_buffers / 4, num_packet_buffers / 8);
167 * cvm_oct_free_work- Free a work queue entry
169 * @work_queue_entry: Work queue entry to free
171 * Returns Zero on success, Negative on failure.
173 int cvm_oct_free_work(void *work_queue_entry)
175 struct cvmx_wqe *work = work_queue_entry;
177 int segments = work->word2.s.bufs;
178 union cvmx_buf_ptr segment_ptr = work->packet_ptr;
181 union cvmx_buf_ptr next_ptr = *(union cvmx_buf_ptr *)
182 cvmx_phys_to_ptr(segment_ptr.s.addr - 8);
183 if (unlikely(!segment_ptr.s.i))
184 cvmx_fpa_free(cvm_oct_get_buffer_ptr(segment_ptr),
186 CVMX_FPA_PACKET_POOL_SIZE / 128);
187 segment_ptr = next_ptr;
189 cvmx_fpa_free(work, CVMX_FPA_WQE_POOL, 1);
193 EXPORT_SYMBOL(cvm_oct_free_work);
196 * cvm_oct_common_get_stats - get the low level ethernet statistics
197 * @dev: Device to get the statistics from
199 * Returns Pointer to the statistics
201 static struct net_device_stats *cvm_oct_common_get_stats(struct net_device *dev)
203 cvmx_pip_port_status_t rx_status;
204 cvmx_pko_port_status_t tx_status;
205 struct octeon_ethernet *priv = netdev_priv(dev);
207 if (priv->port < CVMX_PIP_NUM_INPUT_PORTS) {
208 if (octeon_is_simulation()) {
209 /* The simulator doesn't support statistics */
210 memset(&rx_status, 0, sizeof(rx_status));
211 memset(&tx_status, 0, sizeof(tx_status));
213 cvmx_pip_get_port_status(priv->port, 1, &rx_status);
214 cvmx_pko_get_port_status(priv->port, 1, &tx_status);
217 dev->stats.rx_packets += rx_status.inb_packets;
218 dev->stats.tx_packets += tx_status.packets;
219 dev->stats.rx_bytes += rx_status.inb_octets;
220 dev->stats.tx_bytes += tx_status.octets;
221 dev->stats.multicast += rx_status.multicast_packets;
222 dev->stats.rx_crc_errors += rx_status.inb_errors;
223 dev->stats.rx_frame_errors += rx_status.fcs_align_err_packets;
224 dev->stats.rx_dropped += rx_status.dropped_packets;
231 * cvm_oct_common_change_mtu - change the link MTU
232 * @dev: Device to change
233 * @new_mtu: The new MTU
235 * Returns Zero on success
237 static int cvm_oct_common_change_mtu(struct net_device *dev, int new_mtu)
239 struct octeon_ethernet *priv = netdev_priv(dev);
240 int interface = INTERFACE(priv->port);
241 #if IS_ENABLED(CONFIG_VLAN_8021Q)
242 int vlan_bytes = VLAN_HLEN;
246 int mtu_overhead = ETH_HLEN + ETH_FCS_LEN + vlan_bytes;
250 if ((interface < 2) &&
251 (cvmx_helper_interface_get_mode(interface) !=
252 CVMX_HELPER_INTERFACE_MODE_SPI)) {
253 int index = INDEX(priv->port);
254 /* Add ethernet header and FCS, and VLAN if configured. */
255 int max_packet = new_mtu + mtu_overhead;
257 if (OCTEON_IS_MODEL(OCTEON_CN3XXX) ||
258 OCTEON_IS_MODEL(OCTEON_CN58XX)) {
259 /* Signal errors on packets larger than the MTU */
260 cvmx_write_csr(CVMX_GMXX_RXX_FRM_MAX(index, interface),
264 * Set the hardware to truncate packets larger
265 * than the MTU and smaller the 64 bytes.
267 union cvmx_pip_frm_len_chkx frm_len_chk;
270 frm_len_chk.s.minlen = VLAN_ETH_ZLEN;
271 frm_len_chk.s.maxlen = max_packet;
272 cvmx_write_csr(CVMX_PIP_FRM_LEN_CHKX(interface),
276 * Set the hardware to truncate packets larger than
277 * the MTU. The jabber register must be set to a
278 * multiple of 8 bytes, so round up.
280 cvmx_write_csr(CVMX_GMXX_RXX_JABBER(index, interface),
281 (max_packet + 7) & ~7u);
287 * cvm_oct_common_set_multicast_list - set the multicast list
288 * @dev: Device to work on
290 static void cvm_oct_common_set_multicast_list(struct net_device *dev)
292 union cvmx_gmxx_prtx_cfg gmx_cfg;
293 struct octeon_ethernet *priv = netdev_priv(dev);
294 int interface = INTERFACE(priv->port);
296 if ((interface < 2) &&
297 (cvmx_helper_interface_get_mode(interface) !=
298 CVMX_HELPER_INTERFACE_MODE_SPI)) {
299 union cvmx_gmxx_rxx_adr_ctl control;
300 int index = INDEX(priv->port);
303 control.s.bcst = 1; /* Allow broadcast MAC addresses */
305 if (!netdev_mc_empty(dev) || (dev->flags & IFF_ALLMULTI) ||
306 (dev->flags & IFF_PROMISC))
307 /* Force accept multicast packets */
310 /* Force reject multicast packets */
313 if (dev->flags & IFF_PROMISC)
315 * Reject matches if promisc. Since CAM is
316 * shut off, should accept everything.
318 control.s.cam_mode = 0;
320 /* Filter packets based on the CAM */
321 control.s.cam_mode = 1;
324 cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
325 cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface),
326 gmx_cfg.u64 & ~1ull);
328 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CTL(index, interface),
330 if (dev->flags & IFF_PROMISC)
331 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM_EN
332 (index, interface), 0);
334 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM_EN
335 (index, interface), 1);
337 cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface),
342 static int cvm_oct_set_mac_filter(struct net_device *dev)
344 struct octeon_ethernet *priv = netdev_priv(dev);
345 union cvmx_gmxx_prtx_cfg gmx_cfg;
346 int interface = INTERFACE(priv->port);
348 if ((interface < 2) &&
349 (cvmx_helper_interface_get_mode(interface) !=
350 CVMX_HELPER_INTERFACE_MODE_SPI)) {
352 u8 *ptr = dev->dev_addr;
354 int index = INDEX(priv->port);
356 for (i = 0; i < 6; i++)
357 mac = (mac << 8) | (u64)ptr[i];
360 cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
361 cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface),
362 gmx_cfg.u64 & ~1ull);
364 cvmx_write_csr(CVMX_GMXX_SMACX(index, interface), mac);
365 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM0(index, interface),
367 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM1(index, interface),
369 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM2(index, interface),
371 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM3(index, interface),
373 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM4(index, interface),
375 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM5(index, interface),
377 cvm_oct_common_set_multicast_list(dev);
378 cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface),
385 * cvm_oct_common_set_mac_address - set the hardware MAC address for a device
386 * @dev: The device in question.
387 * @addr: Socket address.
389 * Returns Zero on success
391 static int cvm_oct_common_set_mac_address(struct net_device *dev, void *addr)
393 int r = eth_mac_addr(dev, addr);
397 return cvm_oct_set_mac_filter(dev);
401 * cvm_oct_common_init - per network device initialization
402 * @dev: Device to initialize
404 * Returns Zero on success
406 int cvm_oct_common_init(struct net_device *dev)
408 struct octeon_ethernet *priv = netdev_priv(dev);
409 const u8 *mac = NULL;
412 mac = of_get_mac_address(priv->of_node);
414 if (!IS_ERR_OR_NULL(mac))
415 ether_addr_copy(dev->dev_addr, mac);
417 eth_hw_addr_random(dev);
420 * Force the interface to use the POW send if always_use_pow
421 * was specified or it is in the pow send list.
423 if ((pow_send_group != -1) &&
424 (always_use_pow || strstr(pow_send_list, dev->name)))
427 if (priv->queue != -1)
428 dev->features |= NETIF_F_SG | NETIF_F_IP_CSUM;
430 /* We do our own locking, Linux doesn't need to */
431 dev->features |= NETIF_F_LLTX;
432 dev->ethtool_ops = &cvm_oct_ethtool_ops;
434 cvm_oct_set_mac_filter(dev);
435 dev_set_mtu(dev, dev->mtu);
438 * Zero out stats for port so we won't mistakenly show
439 * counters from the bootloader.
441 memset(dev->netdev_ops->ndo_get_stats(dev), 0,
442 sizeof(struct net_device_stats));
444 if (dev->netdev_ops->ndo_stop)
445 dev->netdev_ops->ndo_stop(dev);
450 void cvm_oct_common_uninit(struct net_device *dev)
453 phy_disconnect(dev->phydev);
456 int cvm_oct_common_open(struct net_device *dev,
457 void (*link_poll)(struct net_device *))
459 union cvmx_gmxx_prtx_cfg gmx_cfg;
460 struct octeon_ethernet *priv = netdev_priv(dev);
461 int interface = INTERFACE(priv->port);
462 int index = INDEX(priv->port);
463 union cvmx_helper_link_info link_info;
466 rv = cvm_oct_phy_setup_device(dev);
470 gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
472 if (octeon_has_feature(OCTEON_FEATURE_PKND))
473 gmx_cfg.s.pknd = priv->port;
474 cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64);
476 if (octeon_is_simulation())
480 int r = phy_read_status(dev->phydev);
482 if (r == 0 && dev->phydev->link == 0)
483 netif_carrier_off(dev);
484 cvm_oct_adjust_link(dev);
486 link_info = cvmx_helper_link_get(priv->port);
487 if (!link_info.s.link_up)
488 netif_carrier_off(dev);
489 priv->poll = link_poll;
496 void cvm_oct_link_poll(struct net_device *dev)
498 struct octeon_ethernet *priv = netdev_priv(dev);
499 union cvmx_helper_link_info link_info;
501 link_info = cvmx_helper_link_get(priv->port);
502 if (link_info.u64 == priv->link_info)
505 if (cvmx_helper_link_set(priv->port, link_info))
506 link_info.u64 = priv->link_info;
508 priv->link_info = link_info.u64;
510 if (link_info.s.link_up) {
511 if (!netif_carrier_ok(dev))
512 netif_carrier_on(dev);
513 } else if (netif_carrier_ok(dev)) {
514 netif_carrier_off(dev);
516 cvm_oct_note_carrier(priv, link_info);
519 static int cvm_oct_xaui_open(struct net_device *dev)
521 return cvm_oct_common_open(dev, cvm_oct_link_poll);
524 static const struct net_device_ops cvm_oct_npi_netdev_ops = {
525 .ndo_init = cvm_oct_common_init,
526 .ndo_uninit = cvm_oct_common_uninit,
527 .ndo_start_xmit = cvm_oct_xmit,
528 .ndo_set_rx_mode = cvm_oct_common_set_multicast_list,
529 .ndo_set_mac_address = cvm_oct_common_set_mac_address,
530 .ndo_do_ioctl = cvm_oct_ioctl,
531 .ndo_change_mtu = cvm_oct_common_change_mtu,
532 .ndo_get_stats = cvm_oct_common_get_stats,
533 #ifdef CONFIG_NET_POLL_CONTROLLER
534 .ndo_poll_controller = cvm_oct_poll_controller,
538 static const struct net_device_ops cvm_oct_xaui_netdev_ops = {
539 .ndo_init = cvm_oct_common_init,
540 .ndo_uninit = cvm_oct_common_uninit,
541 .ndo_open = cvm_oct_xaui_open,
542 .ndo_stop = cvm_oct_common_stop,
543 .ndo_start_xmit = cvm_oct_xmit,
544 .ndo_set_rx_mode = cvm_oct_common_set_multicast_list,
545 .ndo_set_mac_address = cvm_oct_common_set_mac_address,
546 .ndo_do_ioctl = cvm_oct_ioctl,
547 .ndo_change_mtu = cvm_oct_common_change_mtu,
548 .ndo_get_stats = cvm_oct_common_get_stats,
549 #ifdef CONFIG_NET_POLL_CONTROLLER
550 .ndo_poll_controller = cvm_oct_poll_controller,
554 static const struct net_device_ops cvm_oct_sgmii_netdev_ops = {
555 .ndo_init = cvm_oct_sgmii_init,
556 .ndo_uninit = cvm_oct_common_uninit,
557 .ndo_open = cvm_oct_sgmii_open,
558 .ndo_stop = cvm_oct_common_stop,
559 .ndo_start_xmit = cvm_oct_xmit,
560 .ndo_set_rx_mode = cvm_oct_common_set_multicast_list,
561 .ndo_set_mac_address = cvm_oct_common_set_mac_address,
562 .ndo_do_ioctl = cvm_oct_ioctl,
563 .ndo_change_mtu = cvm_oct_common_change_mtu,
564 .ndo_get_stats = cvm_oct_common_get_stats,
565 #ifdef CONFIG_NET_POLL_CONTROLLER
566 .ndo_poll_controller = cvm_oct_poll_controller,
570 static const struct net_device_ops cvm_oct_spi_netdev_ops = {
571 .ndo_init = cvm_oct_spi_init,
572 .ndo_uninit = cvm_oct_spi_uninit,
573 .ndo_start_xmit = cvm_oct_xmit,
574 .ndo_set_rx_mode = cvm_oct_common_set_multicast_list,
575 .ndo_set_mac_address = cvm_oct_common_set_mac_address,
576 .ndo_do_ioctl = cvm_oct_ioctl,
577 .ndo_change_mtu = cvm_oct_common_change_mtu,
578 .ndo_get_stats = cvm_oct_common_get_stats,
579 #ifdef CONFIG_NET_POLL_CONTROLLER
580 .ndo_poll_controller = cvm_oct_poll_controller,
584 static const struct net_device_ops cvm_oct_rgmii_netdev_ops = {
585 .ndo_init = cvm_oct_common_init,
586 .ndo_uninit = cvm_oct_common_uninit,
587 .ndo_open = cvm_oct_rgmii_open,
588 .ndo_stop = cvm_oct_common_stop,
589 .ndo_start_xmit = cvm_oct_xmit,
590 .ndo_set_rx_mode = cvm_oct_common_set_multicast_list,
591 .ndo_set_mac_address = cvm_oct_common_set_mac_address,
592 .ndo_do_ioctl = cvm_oct_ioctl,
593 .ndo_change_mtu = cvm_oct_common_change_mtu,
594 .ndo_get_stats = cvm_oct_common_get_stats,
595 #ifdef CONFIG_NET_POLL_CONTROLLER
596 .ndo_poll_controller = cvm_oct_poll_controller,
600 static const struct net_device_ops cvm_oct_pow_netdev_ops = {
601 .ndo_init = cvm_oct_common_init,
602 .ndo_start_xmit = cvm_oct_xmit_pow,
603 .ndo_set_rx_mode = cvm_oct_common_set_multicast_list,
604 .ndo_set_mac_address = cvm_oct_common_set_mac_address,
605 .ndo_do_ioctl = cvm_oct_ioctl,
606 .ndo_change_mtu = cvm_oct_common_change_mtu,
607 .ndo_get_stats = cvm_oct_common_get_stats,
608 #ifdef CONFIG_NET_POLL_CONTROLLER
609 .ndo_poll_controller = cvm_oct_poll_controller,
613 static struct device_node *cvm_oct_of_get_child
614 (const struct device_node *parent, int reg_val)
616 struct device_node *node = NULL;
621 node = of_get_next_child(parent, node);
624 addr = of_get_property(node, "reg", &size);
625 if (addr && (be32_to_cpu(*addr) == reg_val))
631 static struct device_node *cvm_oct_node_for_port(struct device_node *pip,
632 int interface, int port)
634 struct device_node *ni, *np;
636 ni = cvm_oct_of_get_child(pip, interface);
640 np = cvm_oct_of_get_child(ni, port);
646 static void cvm_set_rgmii_delay(struct octeon_ethernet *priv, int iface,
649 struct device_node *np = priv->of_node;
654 /* By default, both RX/TX delay is enabled in
655 * __cvmx_helper_rgmii_enable().
660 if (!of_property_read_u32(np, "rx-delay", &delay_value)) {
661 cvmx_write_csr(CVMX_ASXX_RX_CLK_SETX(port, iface), delay_value);
662 rx_delay = delay_value > 0;
664 if (!of_property_read_u32(np, "tx-delay", &delay_value)) {
665 cvmx_write_csr(CVMX_ASXX_TX_CLK_SETX(port, iface), delay_value);
666 tx_delay = delay_value > 0;
669 if (!rx_delay && !tx_delay)
670 priv->phy_mode = PHY_INTERFACE_MODE_RGMII_ID;
672 priv->phy_mode = PHY_INTERFACE_MODE_RGMII_RXID;
674 priv->phy_mode = PHY_INTERFACE_MODE_RGMII_TXID;
676 priv->phy_mode = PHY_INTERFACE_MODE_RGMII;
679 static int cvm_oct_probe(struct platform_device *pdev)
683 int fau = FAU_NUM_PACKET_BUFFERS_TO_FREE;
685 struct device_node *pip;
686 int mtu_overhead = ETH_HLEN + ETH_FCS_LEN;
688 #if IS_ENABLED(CONFIG_VLAN_8021Q)
689 mtu_overhead += VLAN_HLEN;
692 pip = pdev->dev.of_node;
694 pr_err("Error: No 'pip' in /aliases\n");
698 cvm_oct_configure_common_hw();
700 cvmx_helper_initialize_packet_io_global();
702 if (receive_group_order) {
703 if (receive_group_order > 4)
704 receive_group_order = 4;
705 pow_receive_groups = (1 << (1 << receive_group_order)) - 1;
707 pow_receive_groups = BIT(pow_receive_group);
710 /* Change the input group for all ports before input is enabled */
711 num_interfaces = cvmx_helper_get_number_of_interfaces();
712 for (interface = 0; interface < num_interfaces; interface++) {
713 int num_ports = cvmx_helper_ports_on_interface(interface);
716 for (port = cvmx_helper_get_ipd_port(interface, 0);
717 port < cvmx_helper_get_ipd_port(interface, num_ports);
719 union cvmx_pip_prt_tagx pip_prt_tagx;
722 cvmx_read_csr(CVMX_PIP_PRT_TAGX(port));
724 if (receive_group_order) {
727 /* We support only 16 groups at the moment, so
728 * always disable the two additional "hidden"
729 * tag_mask bits on CN68XX.
731 if (OCTEON_IS_MODEL(OCTEON_CN68XX))
732 pip_prt_tagx.u64 |= 0x3ull << 44;
734 tag_mask = ~((1 << receive_group_order) - 1);
735 pip_prt_tagx.s.grptagbase = 0;
736 pip_prt_tagx.s.grptagmask = tag_mask;
737 pip_prt_tagx.s.grptag = 1;
738 pip_prt_tagx.s.tag_mode = 0;
739 pip_prt_tagx.s.inc_prt_flag = 1;
740 pip_prt_tagx.s.ip6_dprt_flag = 1;
741 pip_prt_tagx.s.ip4_dprt_flag = 1;
742 pip_prt_tagx.s.ip6_sprt_flag = 1;
743 pip_prt_tagx.s.ip4_sprt_flag = 1;
744 pip_prt_tagx.s.ip6_dst_flag = 1;
745 pip_prt_tagx.s.ip4_dst_flag = 1;
746 pip_prt_tagx.s.ip6_src_flag = 1;
747 pip_prt_tagx.s.ip4_src_flag = 1;
748 pip_prt_tagx.s.grp = 0;
750 pip_prt_tagx.s.grptag = 0;
751 pip_prt_tagx.s.grp = pow_receive_group;
754 cvmx_write_csr(CVMX_PIP_PRT_TAGX(port),
759 cvmx_helper_ipd_and_packet_input_enable();
761 memset(cvm_oct_device, 0, sizeof(cvm_oct_device));
764 * Initialize the FAU used for counting packet buffers that
767 cvmx_fau_atomic_write32(FAU_NUM_PACKET_BUFFERS_TO_FREE, 0);
769 /* Initialize the FAU used for counting tx SKBs that need to be freed */
770 cvmx_fau_atomic_write32(FAU_TOTAL_TX_TO_CLEAN, 0);
772 if ((pow_send_group != -1)) {
773 struct net_device *dev;
775 dev = alloc_etherdev(sizeof(struct octeon_ethernet));
777 /* Initialize the device private structure. */
778 struct octeon_ethernet *priv = netdev_priv(dev);
780 SET_NETDEV_DEV(dev, &pdev->dev);
781 dev->netdev_ops = &cvm_oct_pow_netdev_ops;
782 priv->imode = CVMX_HELPER_INTERFACE_MODE_DISABLED;
783 priv->port = CVMX_PIP_NUM_INPUT_PORTS;
785 strscpy(dev->name, "pow%d", sizeof(dev->name));
786 for (qos = 0; qos < 16; qos++)
787 skb_queue_head_init(&priv->tx_free_list[qos]);
788 dev->min_mtu = VLAN_ETH_ZLEN - mtu_overhead;
789 dev->max_mtu = OCTEON_MAX_MTU - mtu_overhead;
791 if (register_netdev(dev) < 0) {
792 pr_err("Failed to register ethernet device for POW\n");
795 cvm_oct_device[CVMX_PIP_NUM_INPUT_PORTS] = dev;
796 pr_info("%s: POW send group %d, receive group %d\n",
797 dev->name, pow_send_group,
801 pr_err("Failed to allocate ethernet device for POW\n");
805 num_interfaces = cvmx_helper_get_number_of_interfaces();
806 for (interface = 0; interface < num_interfaces; interface++) {
807 cvmx_helper_interface_mode_t imode =
808 cvmx_helper_interface_get_mode(interface);
809 int num_ports = cvmx_helper_ports_on_interface(interface);
814 port = cvmx_helper_get_ipd_port(interface, 0);
815 port < cvmx_helper_get_ipd_port(interface, num_ports);
816 port_index++, port++) {
817 struct octeon_ethernet *priv;
818 struct net_device *dev =
819 alloc_etherdev(sizeof(struct octeon_ethernet));
821 pr_err("Failed to allocate ethernet device for port %d\n",
826 /* Initialize the device private structure. */
827 SET_NETDEV_DEV(dev, &pdev->dev);
828 priv = netdev_priv(dev);
830 priv->of_node = cvm_oct_node_for_port(pip, interface,
833 INIT_DELAYED_WORK(&priv->port_periodic_work,
834 cvm_oct_periodic_worker);
837 priv->queue = cvmx_pko_get_base_queue(priv->port);
838 priv->fau = fau - cvmx_pko_get_num_queues(port) * 4;
839 priv->phy_mode = PHY_INTERFACE_MODE_NA;
840 for (qos = 0; qos < 16; qos++)
841 skb_queue_head_init(&priv->tx_free_list[qos]);
842 for (qos = 0; qos < cvmx_pko_get_num_queues(port);
844 cvmx_fau_atomic_write32(priv->fau + qos * 4, 0);
845 dev->min_mtu = VLAN_ETH_ZLEN - mtu_overhead;
846 dev->max_mtu = OCTEON_MAX_MTU - mtu_overhead;
848 switch (priv->imode) {
849 /* These types don't support ports to IPD/PKO */
850 case CVMX_HELPER_INTERFACE_MODE_DISABLED:
851 case CVMX_HELPER_INTERFACE_MODE_PCIE:
852 case CVMX_HELPER_INTERFACE_MODE_PICMG:
855 case CVMX_HELPER_INTERFACE_MODE_NPI:
856 dev->netdev_ops = &cvm_oct_npi_netdev_ops;
857 strscpy(dev->name, "npi%d", sizeof(dev->name));
860 case CVMX_HELPER_INTERFACE_MODE_XAUI:
861 dev->netdev_ops = &cvm_oct_xaui_netdev_ops;
862 strscpy(dev->name, "xaui%d", sizeof(dev->name));
865 case CVMX_HELPER_INTERFACE_MODE_LOOP:
866 dev->netdev_ops = &cvm_oct_npi_netdev_ops;
867 strscpy(dev->name, "loop%d", sizeof(dev->name));
870 case CVMX_HELPER_INTERFACE_MODE_SGMII:
871 priv->phy_mode = PHY_INTERFACE_MODE_SGMII;
872 dev->netdev_ops = &cvm_oct_sgmii_netdev_ops;
873 strscpy(dev->name, "eth%d", sizeof(dev->name));
876 case CVMX_HELPER_INTERFACE_MODE_SPI:
877 dev->netdev_ops = &cvm_oct_spi_netdev_ops;
878 strscpy(dev->name, "spi%d", sizeof(dev->name));
881 case CVMX_HELPER_INTERFACE_MODE_GMII:
882 priv->phy_mode = PHY_INTERFACE_MODE_GMII;
883 dev->netdev_ops = &cvm_oct_rgmii_netdev_ops;
884 strscpy(dev->name, "eth%d", sizeof(dev->name));
887 case CVMX_HELPER_INTERFACE_MODE_RGMII:
888 dev->netdev_ops = &cvm_oct_rgmii_netdev_ops;
889 strscpy(dev->name, "eth%d", sizeof(dev->name));
890 cvm_set_rgmii_delay(priv, interface,
895 if (!dev->netdev_ops) {
897 } else if (register_netdev(dev) < 0) {
898 pr_err("Failed to register ethernet device for interface %d, port %d\n",
899 interface, priv->port);
902 cvm_oct_device[priv->port] = dev;
904 cvmx_pko_get_num_queues(priv->port) *
906 schedule_delayed_work(&priv->port_periodic_work,
912 cvm_oct_tx_initialize();
913 cvm_oct_rx_initialize();
916 * 150 uS: about 10 1500-byte packets at 1GE.
918 cvm_oct_tx_poll_interval = 150 * (octeon_get_clock_rate() / 1000000);
920 schedule_delayed_work(&cvm_oct_rx_refill_work, HZ);
925 static int cvm_oct_remove(struct platform_device *pdev)
931 atomic_inc_return(&cvm_oct_poll_queue_stopping);
932 cancel_delayed_work_sync(&cvm_oct_rx_refill_work);
934 cvm_oct_rx_shutdown();
935 cvm_oct_tx_shutdown();
939 /* Free the ethernet devices */
940 for (port = 0; port < TOTAL_NUMBER_OF_PORTS; port++) {
941 if (cvm_oct_device[port]) {
942 struct net_device *dev = cvm_oct_device[port];
943 struct octeon_ethernet *priv = netdev_priv(dev);
945 cancel_delayed_work_sync(&priv->port_periodic_work);
947 cvm_oct_tx_shutdown_dev(dev);
948 unregister_netdev(dev);
950 cvm_oct_device[port] = NULL;
958 /* Free the HW pools */
959 cvm_oct_mem_empty_fpa(CVMX_FPA_PACKET_POOL, CVMX_FPA_PACKET_POOL_SIZE,
961 cvm_oct_mem_empty_fpa(CVMX_FPA_WQE_POOL, CVMX_FPA_WQE_POOL_SIZE,
963 if (CVMX_FPA_OUTPUT_BUFFER_POOL != CVMX_FPA_PACKET_POOL)
964 cvm_oct_mem_empty_fpa(CVMX_FPA_OUTPUT_BUFFER_POOL,
965 CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE, 128);
969 static const struct of_device_id cvm_oct_match[] = {
971 .compatible = "cavium,octeon-3860-pip",
975 MODULE_DEVICE_TABLE(of, cvm_oct_match);
977 static struct platform_driver cvm_oct_driver = {
978 .probe = cvm_oct_probe,
979 .remove = cvm_oct_remove,
981 .name = KBUILD_MODNAME,
982 .of_match_table = cvm_oct_match,
986 module_platform_driver(cvm_oct_driver);
988 MODULE_SOFTDEP("pre: mdio-cavium");
989 MODULE_LICENSE("GPL");
990 MODULE_AUTHOR("Cavium Networks <support@caviumnetworks.com>");
991 MODULE_DESCRIPTION("Cavium Networks Octeon ethernet driver.");