2 * This file is based on code from OCTEON SDK by Cavium Networks.
4 * Copyright (c) 2003-2007 Cavium Networks
6 * This file is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License, Version 2, as
8 * published by the Free Software Foundation.
11 #include <linux/platform_device.h>
12 #include <linux/kernel.h>
13 #include <linux/module.h>
14 #include <linux/netdevice.h>
15 #include <linux/etherdevice.h>
16 #include <linux/phy.h>
17 #include <linux/slab.h>
18 #include <linux/interrupt.h>
19 #include <linux/of_net.h>
23 #include <asm/octeon/octeon.h>
25 #include "ethernet-defines.h"
26 #include "octeon-ethernet.h"
27 #include "ethernet-mem.h"
28 #include "ethernet-rx.h"
29 #include "ethernet-tx.h"
30 #include "ethernet-mdio.h"
31 #include "ethernet-util.h"
33 #include <asm/octeon/cvmx-pip.h>
34 #include <asm/octeon/cvmx-pko.h>
35 #include <asm/octeon/cvmx-fau.h>
36 #include <asm/octeon/cvmx-ipd.h>
37 #include <asm/octeon/cvmx-helper.h>
39 #include <asm/octeon/cvmx-gmxx-defs.h>
40 #include <asm/octeon/cvmx-smix-defs.h>
42 static int num_packet_buffers = 1024;
43 module_param(num_packet_buffers, int, 0444);
44 MODULE_PARM_DESC(num_packet_buffers, "\n"
45 "\tNumber of packet buffers to allocate and store in the\n"
46 "\tFPA. By default, 1024 packet buffers are used.\n");
48 int pow_receive_group = 15;
49 module_param(pow_receive_group, int, 0444);
50 MODULE_PARM_DESC(pow_receive_group, "\n"
51 "\tPOW group to receive packets from. All ethernet hardware\n"
52 "\twill be configured to send incoming packets to this POW\n"
53 "\tgroup. Also any other software can submit packets to this\n"
54 "\tgroup for the kernel to process.");
56 int pow_send_group = -1;
57 module_param(pow_send_group, int, 0644);
58 MODULE_PARM_DESC(pow_send_group, "\n"
59 "\tPOW group to send packets to other software on. This\n"
60 "\tcontrols the creation of the virtual device pow0.\n"
61 "\talways_use_pow also depends on this value.");
64 module_param(always_use_pow, int, 0444);
65 MODULE_PARM_DESC(always_use_pow, "\n"
66 "\tWhen set, always send to the pow group. This will cause\n"
67 "\tpackets sent to real ethernet devices to be sent to the\n"
68 "\tPOW group instead of the hardware. Unless some other\n"
69 "\tapplication changes the config, packets will still be\n"
70 "\treceived from the low level hardware. Use this option\n"
71 "\tto allow a CVMX app to intercept all packets from the\n"
72 "\tlinux kernel. You must specify pow_send_group along with\n"
75 char pow_send_list[128] = "";
76 module_param_string(pow_send_list, pow_send_list, sizeof(pow_send_list), 0444);
77 MODULE_PARM_DESC(pow_send_list, "\n"
78 "\tComma separated list of ethernet devices that should use the\n"
79 "\tPOW for transmit instead of the actual ethernet hardware. This\n"
80 "\tis a per port version of always_use_pow. always_use_pow takes\n"
81 "\tprecedence over this list. For example, setting this to\n"
82 "\t\"eth2,spi3,spi7\" would cause these three devices to transmit\n"
83 "\tusing the pow_send_group.");
85 int rx_napi_weight = 32;
86 module_param(rx_napi_weight, int, 0444);
87 MODULE_PARM_DESC(rx_napi_weight, "The NAPI WEIGHT parameter.");
90 * cvm_oct_poll_queue - Workqueue for polling operations.
92 struct workqueue_struct *cvm_oct_poll_queue;
95 * cvm_oct_poll_queue_stopping - flag to indicate polling should stop.
97 * Set to one right before cvm_oct_poll_queue is destroyed.
99 atomic_t cvm_oct_poll_queue_stopping = ATOMIC_INIT(0);
102 * Array of every ethernet device owned by this driver indexed by
103 * the ipd input port number.
105 struct net_device *cvm_oct_device[TOTAL_NUMBER_OF_PORTS];
107 u64 cvm_oct_tx_poll_interval;
109 static void cvm_oct_rx_refill_worker(struct work_struct *work);
110 static DECLARE_DELAYED_WORK(cvm_oct_rx_refill_work, cvm_oct_rx_refill_worker);
112 static void cvm_oct_rx_refill_worker(struct work_struct *work)
115 * FPA 0 may have been drained, try to refill it if we need
116 * more than num_packet_buffers / 2, otherwise normal receive
117 * processing will refill it. If it were drained, no packets
118 * could be received so cvm_oct_napi_poll would never be
119 * invoked to do the refill.
121 cvm_oct_rx_refill_pool(num_packet_buffers / 2);
123 if (!atomic_read(&cvm_oct_poll_queue_stopping))
124 queue_delayed_work(cvm_oct_poll_queue,
125 &cvm_oct_rx_refill_work, HZ);
128 static void cvm_oct_periodic_worker(struct work_struct *work)
130 struct octeon_ethernet *priv = container_of(work,
131 struct octeon_ethernet,
132 port_periodic_work.work);
135 priv->poll(cvm_oct_device[priv->port]);
137 cvm_oct_device[priv->port]->netdev_ops->ndo_get_stats(
138 cvm_oct_device[priv->port]);
140 if (!atomic_read(&cvm_oct_poll_queue_stopping))
141 queue_delayed_work(cvm_oct_poll_queue,
142 &priv->port_periodic_work, HZ);
145 static void cvm_oct_configure_common_hw(void)
149 cvm_oct_mem_fill_fpa(CVMX_FPA_PACKET_POOL, CVMX_FPA_PACKET_POOL_SIZE,
151 cvm_oct_mem_fill_fpa(CVMX_FPA_WQE_POOL, CVMX_FPA_WQE_POOL_SIZE,
153 if (CVMX_FPA_OUTPUT_BUFFER_POOL != CVMX_FPA_PACKET_POOL)
154 cvm_oct_mem_fill_fpa(CVMX_FPA_OUTPUT_BUFFER_POOL,
155 CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE, 128);
157 #ifdef __LITTLE_ENDIAN
159 union cvmx_ipd_ctl_status ipd_ctl_status;
160 ipd_ctl_status.u64 = cvmx_read_csr(CVMX_IPD_CTL_STATUS);
161 ipd_ctl_status.s.pkt_lend = 1;
162 ipd_ctl_status.s.wqe_lend = 1;
163 cvmx_write_csr(CVMX_IPD_CTL_STATUS, ipd_ctl_status.u64);
167 cvmx_helper_setup_red(num_packet_buffers / 4, num_packet_buffers / 8);
171 * cvm_oct_free_work- Free a work queue entry
173 * @work_queue_entry: Work queue entry to free
175 * Returns Zero on success, Negative on failure.
177 int cvm_oct_free_work(void *work_queue_entry)
179 cvmx_wqe_t *work = work_queue_entry;
181 int segments = work->word2.s.bufs;
182 union cvmx_buf_ptr segment_ptr = work->packet_ptr;
185 union cvmx_buf_ptr next_ptr = *(union cvmx_buf_ptr *)
186 cvmx_phys_to_ptr(segment_ptr.s.addr - 8);
187 if (unlikely(!segment_ptr.s.i))
188 cvmx_fpa_free(cvm_oct_get_buffer_ptr(segment_ptr),
190 CVMX_FPA_PACKET_POOL_SIZE / 128);
191 segment_ptr = next_ptr;
193 cvmx_fpa_free(work, CVMX_FPA_WQE_POOL, 1);
197 EXPORT_SYMBOL(cvm_oct_free_work);
200 * cvm_oct_common_get_stats - get the low level ethernet statistics
201 * @dev: Device to get the statistics from
203 * Returns Pointer to the statistics
205 static struct net_device_stats *cvm_oct_common_get_stats(struct net_device *dev)
207 cvmx_pip_port_status_t rx_status;
208 cvmx_pko_port_status_t tx_status;
209 struct octeon_ethernet *priv = netdev_priv(dev);
211 if (priv->port < CVMX_PIP_NUM_INPUT_PORTS) {
212 if (octeon_is_simulation()) {
213 /* The simulator doesn't support statistics */
214 memset(&rx_status, 0, sizeof(rx_status));
215 memset(&tx_status, 0, sizeof(tx_status));
217 cvmx_pip_get_port_status(priv->port, 1, &rx_status);
218 cvmx_pko_get_port_status(priv->port, 1, &tx_status);
221 priv->stats.rx_packets += rx_status.inb_packets;
222 priv->stats.tx_packets += tx_status.packets;
223 priv->stats.rx_bytes += rx_status.inb_octets;
224 priv->stats.tx_bytes += tx_status.octets;
225 priv->stats.multicast += rx_status.multicast_packets;
226 priv->stats.rx_crc_errors += rx_status.inb_errors;
227 priv->stats.rx_frame_errors += rx_status.fcs_align_err_packets;
230 * The drop counter must be incremented atomically
231 * since the RX tasklet also increments it.
234 atomic64_add(rx_status.dropped_packets,
235 (atomic64_t *)&priv->stats.rx_dropped);
237 atomic_add(rx_status.dropped_packets,
238 (atomic_t *)&priv->stats.rx_dropped);
246 * cvm_oct_common_change_mtu - change the link MTU
247 * @dev: Device to change
248 * @new_mtu: The new MTU
250 * Returns Zero on success
252 static int cvm_oct_common_change_mtu(struct net_device *dev, int new_mtu)
254 struct octeon_ethernet *priv = netdev_priv(dev);
255 int interface = INTERFACE(priv->port);
256 int index = INDEX(priv->port);
257 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
264 * Limit the MTU to make sure the ethernet packets are between
265 * 64 bytes and 65535 bytes.
267 if ((new_mtu + 14 + 4 + vlan_bytes < 64)
268 || (new_mtu + 14 + 4 + vlan_bytes > 65392)) {
269 pr_err("MTU must be between %d and %d.\n",
270 64 - 14 - 4 - vlan_bytes, 65392 - 14 - 4 - vlan_bytes);
276 && (cvmx_helper_interface_get_mode(interface) !=
277 CVMX_HELPER_INTERFACE_MODE_SPI)) {
278 /* Add ethernet header and FCS, and VLAN if configured. */
279 int max_packet = new_mtu + 14 + 4 + vlan_bytes;
281 if (OCTEON_IS_MODEL(OCTEON_CN3XXX)
282 || OCTEON_IS_MODEL(OCTEON_CN58XX)) {
283 /* Signal errors on packets larger than the MTU */
284 cvmx_write_csr(CVMX_GMXX_RXX_FRM_MAX(index, interface),
288 * Set the hardware to truncate packets larger
289 * than the MTU and smaller the 64 bytes.
291 union cvmx_pip_frm_len_chkx frm_len_chk;
294 frm_len_chk.s.minlen = 64;
295 frm_len_chk.s.maxlen = max_packet;
296 cvmx_write_csr(CVMX_PIP_FRM_LEN_CHKX(interface),
300 * Set the hardware to truncate packets larger than
301 * the MTU. The jabber register must be set to a
302 * multiple of 8 bytes, so round up.
304 cvmx_write_csr(CVMX_GMXX_RXX_JABBER(index, interface),
305 (max_packet + 7) & ~7u);
311 * cvm_oct_common_set_multicast_list - set the multicast list
312 * @dev: Device to work on
314 static void cvm_oct_common_set_multicast_list(struct net_device *dev)
316 union cvmx_gmxx_prtx_cfg gmx_cfg;
317 struct octeon_ethernet *priv = netdev_priv(dev);
318 int interface = INTERFACE(priv->port);
319 int index = INDEX(priv->port);
322 && (cvmx_helper_interface_get_mode(interface) !=
323 CVMX_HELPER_INTERFACE_MODE_SPI)) {
324 union cvmx_gmxx_rxx_adr_ctl control;
327 control.s.bcst = 1; /* Allow broadcast MAC addresses */
329 if (!netdev_mc_empty(dev) || (dev->flags & IFF_ALLMULTI) ||
330 (dev->flags & IFF_PROMISC))
331 /* Force accept multicast packets */
334 /* Force reject multicast packets */
337 if (dev->flags & IFF_PROMISC)
339 * Reject matches if promisc. Since CAM is
340 * shut off, should accept everything.
342 control.s.cam_mode = 0;
344 /* Filter packets based on the CAM */
345 control.s.cam_mode = 1;
348 cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
349 cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface),
350 gmx_cfg.u64 & ~1ull);
352 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CTL(index, interface),
354 if (dev->flags & IFF_PROMISC)
355 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM_EN
356 (index, interface), 0);
358 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM_EN
359 (index, interface), 1);
361 cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface),
367 * cvm_oct_common_set_mac_address - set the hardware MAC address for a device
368 * @dev: The device in question.
369 * @addr: Address structure to change it too.
371 * Returns Zero on success
373 static int cvm_oct_set_mac_filter(struct net_device *dev)
375 struct octeon_ethernet *priv = netdev_priv(dev);
376 union cvmx_gmxx_prtx_cfg gmx_cfg;
377 int interface = INTERFACE(priv->port);
378 int index = INDEX(priv->port);
381 && (cvmx_helper_interface_get_mode(interface) !=
382 CVMX_HELPER_INTERFACE_MODE_SPI)) {
384 uint8_t *ptr = dev->dev_addr;
387 for (i = 0; i < 6; i++)
388 mac = (mac << 8) | (uint64_t)ptr[i];
391 cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
392 cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface),
393 gmx_cfg.u64 & ~1ull);
395 cvmx_write_csr(CVMX_GMXX_SMACX(index, interface), mac);
396 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM0(index, interface),
398 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM1(index, interface),
400 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM2(index, interface),
402 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM3(index, interface),
404 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM4(index, interface),
406 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM5(index, interface),
408 cvm_oct_common_set_multicast_list(dev);
409 cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface),
415 static int cvm_oct_common_set_mac_address(struct net_device *dev, void *addr)
417 int r = eth_mac_addr(dev, addr);
421 return cvm_oct_set_mac_filter(dev);
425 * cvm_oct_common_init - per network device initialization
426 * @dev: Device to initialize
428 * Returns Zero on success
430 int cvm_oct_common_init(struct net_device *dev)
432 struct octeon_ethernet *priv = netdev_priv(dev);
433 const u8 *mac = NULL;
436 mac = of_get_mac_address(priv->of_node);
439 ether_addr_copy(dev->dev_addr, mac);
441 eth_hw_addr_random(dev);
444 * Force the interface to use the POW send if always_use_pow
445 * was specified or it is in the pow send list.
447 if ((pow_send_group != -1)
448 && (always_use_pow || strstr(pow_send_list, dev->name)))
451 if (priv->queue != -1)
452 dev->features |= NETIF_F_SG | NETIF_F_IP_CSUM;
454 /* We do our own locking, Linux doesn't need to */
455 dev->features |= NETIF_F_LLTX;
456 dev->ethtool_ops = &cvm_oct_ethtool_ops;
458 cvm_oct_set_mac_filter(dev);
459 dev->netdev_ops->ndo_change_mtu(dev, dev->mtu);
462 * Zero out stats for port so we won't mistakenly show
463 * counters from the bootloader.
465 memset(dev->netdev_ops->ndo_get_stats(dev), 0,
466 sizeof(struct net_device_stats));
468 if (dev->netdev_ops->ndo_stop)
469 dev->netdev_ops->ndo_stop(dev);
474 void cvm_oct_common_uninit(struct net_device *dev)
476 struct octeon_ethernet *priv = netdev_priv(dev);
479 phy_disconnect(priv->phydev);
482 int cvm_oct_common_open(struct net_device *dev,
483 void (*link_poll)(struct net_device *), bool poll_now)
485 union cvmx_gmxx_prtx_cfg gmx_cfg;
486 struct octeon_ethernet *priv = netdev_priv(dev);
487 int interface = INTERFACE(priv->port);
488 int index = INDEX(priv->port);
489 cvmx_helper_link_info_t link_info;
492 rv = cvm_oct_phy_setup_device(dev);
496 gmx_cfg.u64 = cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
498 cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface), gmx_cfg.u64);
500 if (octeon_is_simulation())
504 int r = phy_read_status(priv->phydev);
506 if (r == 0 && priv->phydev->link == 0)
507 netif_carrier_off(dev);
508 cvm_oct_adjust_link(dev);
510 link_info = cvmx_helper_link_get(priv->port);
511 if (!link_info.s.link_up)
512 netif_carrier_off(dev);
513 priv->poll = link_poll;
521 void cvm_oct_link_poll(struct net_device *dev)
523 struct octeon_ethernet *priv = netdev_priv(dev);
524 cvmx_helper_link_info_t link_info;
526 link_info = cvmx_helper_link_get(priv->port);
527 if (link_info.u64 == priv->link_info)
530 link_info = cvmx_helper_link_autoconf(priv->port);
531 priv->link_info = link_info.u64;
533 if (link_info.s.link_up) {
534 if (!netif_carrier_ok(dev))
535 netif_carrier_on(dev);
536 } else if (netif_carrier_ok(dev)) {
537 netif_carrier_off(dev);
539 cvm_oct_note_carrier(priv, link_info);
542 static const struct net_device_ops cvm_oct_npi_netdev_ops = {
543 .ndo_init = cvm_oct_common_init,
544 .ndo_uninit = cvm_oct_common_uninit,
545 .ndo_start_xmit = cvm_oct_xmit,
546 .ndo_set_rx_mode = cvm_oct_common_set_multicast_list,
547 .ndo_set_mac_address = cvm_oct_common_set_mac_address,
548 .ndo_do_ioctl = cvm_oct_ioctl,
549 .ndo_change_mtu = cvm_oct_common_change_mtu,
550 .ndo_get_stats = cvm_oct_common_get_stats,
551 #ifdef CONFIG_NET_POLL_CONTROLLER
552 .ndo_poll_controller = cvm_oct_poll_controller,
555 static const struct net_device_ops cvm_oct_xaui_netdev_ops = {
556 .ndo_init = cvm_oct_xaui_init,
557 .ndo_uninit = cvm_oct_common_uninit,
558 .ndo_open = cvm_oct_xaui_open,
559 .ndo_stop = cvm_oct_common_stop,
560 .ndo_start_xmit = cvm_oct_xmit,
561 .ndo_set_rx_mode = cvm_oct_common_set_multicast_list,
562 .ndo_set_mac_address = cvm_oct_common_set_mac_address,
563 .ndo_do_ioctl = cvm_oct_ioctl,
564 .ndo_change_mtu = cvm_oct_common_change_mtu,
565 .ndo_get_stats = cvm_oct_common_get_stats,
566 #ifdef CONFIG_NET_POLL_CONTROLLER
567 .ndo_poll_controller = cvm_oct_poll_controller,
570 static const struct net_device_ops cvm_oct_sgmii_netdev_ops = {
571 .ndo_init = cvm_oct_sgmii_init,
572 .ndo_uninit = cvm_oct_common_uninit,
573 .ndo_open = cvm_oct_sgmii_open,
574 .ndo_stop = cvm_oct_common_stop,
575 .ndo_start_xmit = cvm_oct_xmit,
576 .ndo_set_rx_mode = cvm_oct_common_set_multicast_list,
577 .ndo_set_mac_address = cvm_oct_common_set_mac_address,
578 .ndo_do_ioctl = cvm_oct_ioctl,
579 .ndo_change_mtu = cvm_oct_common_change_mtu,
580 .ndo_get_stats = cvm_oct_common_get_stats,
581 #ifdef CONFIG_NET_POLL_CONTROLLER
582 .ndo_poll_controller = cvm_oct_poll_controller,
585 static const struct net_device_ops cvm_oct_spi_netdev_ops = {
586 .ndo_init = cvm_oct_spi_init,
587 .ndo_uninit = cvm_oct_spi_uninit,
588 .ndo_start_xmit = cvm_oct_xmit,
589 .ndo_set_rx_mode = cvm_oct_common_set_multicast_list,
590 .ndo_set_mac_address = cvm_oct_common_set_mac_address,
591 .ndo_do_ioctl = cvm_oct_ioctl,
592 .ndo_change_mtu = cvm_oct_common_change_mtu,
593 .ndo_get_stats = cvm_oct_common_get_stats,
594 #ifdef CONFIG_NET_POLL_CONTROLLER
595 .ndo_poll_controller = cvm_oct_poll_controller,
598 static const struct net_device_ops cvm_oct_rgmii_netdev_ops = {
599 .ndo_init = cvm_oct_rgmii_init,
600 .ndo_uninit = cvm_oct_rgmii_uninit,
601 .ndo_open = cvm_oct_rgmii_open,
602 .ndo_stop = cvm_oct_common_stop,
603 .ndo_start_xmit = cvm_oct_xmit,
604 .ndo_set_rx_mode = cvm_oct_common_set_multicast_list,
605 .ndo_set_mac_address = cvm_oct_common_set_mac_address,
606 .ndo_do_ioctl = cvm_oct_ioctl,
607 .ndo_change_mtu = cvm_oct_common_change_mtu,
608 .ndo_get_stats = cvm_oct_common_get_stats,
609 #ifdef CONFIG_NET_POLL_CONTROLLER
610 .ndo_poll_controller = cvm_oct_poll_controller,
613 static const struct net_device_ops cvm_oct_pow_netdev_ops = {
614 .ndo_init = cvm_oct_common_init,
615 .ndo_start_xmit = cvm_oct_xmit_pow,
616 .ndo_set_rx_mode = cvm_oct_common_set_multicast_list,
617 .ndo_set_mac_address = cvm_oct_common_set_mac_address,
618 .ndo_do_ioctl = cvm_oct_ioctl,
619 .ndo_change_mtu = cvm_oct_common_change_mtu,
620 .ndo_get_stats = cvm_oct_common_get_stats,
621 #ifdef CONFIG_NET_POLL_CONTROLLER
622 .ndo_poll_controller = cvm_oct_poll_controller,
626 static struct device_node *cvm_oct_of_get_child(
627 const struct device_node *parent, int reg_val)
629 struct device_node *node = NULL;
634 node = of_get_next_child(parent, node);
637 addr = of_get_property(node, "reg", &size);
638 if (addr && (be32_to_cpu(*addr) == reg_val))
644 static struct device_node *cvm_oct_node_for_port(struct device_node *pip,
645 int interface, int port)
647 struct device_node *ni, *np;
649 ni = cvm_oct_of_get_child(pip, interface);
653 np = cvm_oct_of_get_child(ni, port);
659 static int cvm_oct_probe(struct platform_device *pdev)
663 int fau = FAU_NUM_PACKET_BUFFERS_TO_FREE;
665 struct device_node *pip;
667 octeon_mdiobus_force_mod_depencency();
669 pip = pdev->dev.of_node;
671 pr_err("Error: No 'pip' in /aliases\n");
675 cvm_oct_poll_queue = create_singlethread_workqueue("octeon-ethernet");
676 if (cvm_oct_poll_queue == NULL) {
677 pr_err("octeon-ethernet: Cannot create workqueue");
681 cvm_oct_configure_common_hw();
683 cvmx_helper_initialize_packet_io_global();
685 /* Change the input group for all ports before input is enabled */
686 num_interfaces = cvmx_helper_get_number_of_interfaces();
687 for (interface = 0; interface < num_interfaces; interface++) {
688 int num_ports = cvmx_helper_ports_on_interface(interface);
691 for (port = cvmx_helper_get_ipd_port(interface, 0);
692 port < cvmx_helper_get_ipd_port(interface, num_ports);
694 union cvmx_pip_prt_tagx pip_prt_tagx;
697 cvmx_read_csr(CVMX_PIP_PRT_TAGX(port));
698 pip_prt_tagx.s.grp = pow_receive_group;
699 cvmx_write_csr(CVMX_PIP_PRT_TAGX(port),
704 cvmx_helper_ipd_and_packet_input_enable();
706 memset(cvm_oct_device, 0, sizeof(cvm_oct_device));
709 * Initialize the FAU used for counting packet buffers that
712 cvmx_fau_atomic_write32(FAU_NUM_PACKET_BUFFERS_TO_FREE, 0);
714 /* Initialize the FAU used for counting tx SKBs that need to be freed */
715 cvmx_fau_atomic_write32(FAU_TOTAL_TX_TO_CLEAN, 0);
717 if ((pow_send_group != -1)) {
718 struct net_device *dev;
720 pr_info("\tConfiguring device for POW only access\n");
721 dev = alloc_etherdev(sizeof(struct octeon_ethernet));
723 /* Initialize the device private structure. */
724 struct octeon_ethernet *priv = netdev_priv(dev);
726 dev->netdev_ops = &cvm_oct_pow_netdev_ops;
727 priv->imode = CVMX_HELPER_INTERFACE_MODE_DISABLED;
728 priv->port = CVMX_PIP_NUM_INPUT_PORTS;
730 strcpy(dev->name, "pow%d");
731 for (qos = 0; qos < 16; qos++)
732 skb_queue_head_init(&priv->tx_free_list[qos]);
734 if (register_netdev(dev) < 0) {
735 pr_err("Failed to register ethernet device for POW\n");
738 cvm_oct_device[CVMX_PIP_NUM_INPUT_PORTS] = dev;
739 pr_info("%s: POW send group %d, receive group %d\n",
740 dev->name, pow_send_group,
744 pr_err("Failed to allocate ethernet device for POW\n");
748 num_interfaces = cvmx_helper_get_number_of_interfaces();
749 for (interface = 0; interface < num_interfaces; interface++) {
750 cvmx_helper_interface_mode_t imode =
751 cvmx_helper_interface_get_mode(interface);
752 int num_ports = cvmx_helper_ports_on_interface(interface);
757 port = cvmx_helper_get_ipd_port(interface, 0);
758 port < cvmx_helper_get_ipd_port(interface, num_ports);
759 port_index++, port++) {
760 struct octeon_ethernet *priv;
761 struct net_device *dev =
762 alloc_etherdev(sizeof(struct octeon_ethernet));
764 pr_err("Failed to allocate ethernet device for port %d\n",
769 /* Initialize the device private structure. */
770 priv = netdev_priv(dev);
772 priv->of_node = cvm_oct_node_for_port(pip, interface,
775 INIT_DELAYED_WORK(&priv->port_periodic_work,
776 cvm_oct_periodic_worker);
779 priv->queue = cvmx_pko_get_base_queue(priv->port);
780 priv->fau = fau - cvmx_pko_get_num_queues(port) * 4;
781 for (qos = 0; qos < 16; qos++)
782 skb_queue_head_init(&priv->tx_free_list[qos]);
783 for (qos = 0; qos < cvmx_pko_get_num_queues(port);
785 cvmx_fau_atomic_write32(priv->fau + qos * 4, 0);
787 switch (priv->imode) {
789 /* These types don't support ports to IPD/PKO */
790 case CVMX_HELPER_INTERFACE_MODE_DISABLED:
791 case CVMX_HELPER_INTERFACE_MODE_PCIE:
792 case CVMX_HELPER_INTERFACE_MODE_PICMG:
795 case CVMX_HELPER_INTERFACE_MODE_NPI:
796 dev->netdev_ops = &cvm_oct_npi_netdev_ops;
797 strcpy(dev->name, "npi%d");
800 case CVMX_HELPER_INTERFACE_MODE_XAUI:
801 dev->netdev_ops = &cvm_oct_xaui_netdev_ops;
802 strcpy(dev->name, "xaui%d");
805 case CVMX_HELPER_INTERFACE_MODE_LOOP:
806 dev->netdev_ops = &cvm_oct_npi_netdev_ops;
807 strcpy(dev->name, "loop%d");
810 case CVMX_HELPER_INTERFACE_MODE_SGMII:
811 dev->netdev_ops = &cvm_oct_sgmii_netdev_ops;
812 strcpy(dev->name, "eth%d");
815 case CVMX_HELPER_INTERFACE_MODE_SPI:
816 dev->netdev_ops = &cvm_oct_spi_netdev_ops;
817 strcpy(dev->name, "spi%d");
820 case CVMX_HELPER_INTERFACE_MODE_RGMII:
821 case CVMX_HELPER_INTERFACE_MODE_GMII:
822 dev->netdev_ops = &cvm_oct_rgmii_netdev_ops;
823 strcpy(dev->name, "eth%d");
827 if (!dev->netdev_ops) {
829 } else if (register_netdev(dev) < 0) {
830 pr_err("Failed to register ethernet device for interface %d, port %d\n",
831 interface, priv->port);
834 cvm_oct_device[priv->port] = dev;
836 cvmx_pko_get_num_queues(priv->port) *
838 queue_delayed_work(cvm_oct_poll_queue,
839 &priv->port_periodic_work, HZ);
844 cvm_oct_tx_initialize();
845 cvm_oct_rx_initialize();
848 * 150 uS: about 10 1500-byte packets at 1GE.
850 cvm_oct_tx_poll_interval = 150 * (octeon_get_clock_rate() / 1000000);
852 queue_delayed_work(cvm_oct_poll_queue, &cvm_oct_rx_refill_work, HZ);
857 static int cvm_oct_remove(struct platform_device *pdev)
861 /* Disable POW interrupt */
862 cvmx_write_csr(CVMX_POW_WQ_INT_THRX(pow_receive_group), 0);
866 /* Free the interrupt handler */
867 free_irq(OCTEON_IRQ_WORKQ0 + pow_receive_group, cvm_oct_device);
869 atomic_inc_return(&cvm_oct_poll_queue_stopping);
870 cancel_delayed_work_sync(&cvm_oct_rx_refill_work);
872 cvm_oct_rx_shutdown();
873 cvm_oct_tx_shutdown();
877 /* Free the ethernet devices */
878 for (port = 0; port < TOTAL_NUMBER_OF_PORTS; port++) {
879 if (cvm_oct_device[port]) {
880 struct net_device *dev = cvm_oct_device[port];
881 struct octeon_ethernet *priv = netdev_priv(dev);
883 cancel_delayed_work_sync(&priv->port_periodic_work);
885 cvm_oct_tx_shutdown_dev(dev);
886 unregister_netdev(dev);
888 cvm_oct_device[port] = NULL;
892 destroy_workqueue(cvm_oct_poll_queue);
898 /* Free the HW pools */
899 cvm_oct_mem_empty_fpa(CVMX_FPA_PACKET_POOL, CVMX_FPA_PACKET_POOL_SIZE,
901 cvm_oct_mem_empty_fpa(CVMX_FPA_WQE_POOL, CVMX_FPA_WQE_POOL_SIZE,
903 if (CVMX_FPA_OUTPUT_BUFFER_POOL != CVMX_FPA_PACKET_POOL)
904 cvm_oct_mem_empty_fpa(CVMX_FPA_OUTPUT_BUFFER_POOL,
905 CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE, 128);
909 static const struct of_device_id cvm_oct_match[] = {
911 .compatible = "cavium,octeon-3860-pip",
915 MODULE_DEVICE_TABLE(of, cvm_oct_match);
917 static struct platform_driver cvm_oct_driver = {
918 .probe = cvm_oct_probe,
919 .remove = cvm_oct_remove,
921 .name = KBUILD_MODNAME,
922 .of_match_table = cvm_oct_match,
926 module_platform_driver(cvm_oct_driver);
928 MODULE_LICENSE("GPL");
929 MODULE_AUTHOR("Cavium Networks <support@caviumnetworks.com>");
930 MODULE_DESCRIPTION("Cavium Networks Octeon ethernet driver.");