1 /**********************************************************************
2 * Author: Cavium Networks
4 * Contact: support@caviumnetworks.com
5 * This file is part of the OCTEON SDK
7 * Copyright (c) 2003-2007 Cavium Networks
9 * This file is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License, Version 2, as
11 * published by the Free Software Foundation.
13 * This file is distributed in the hope that it will be useful, but
14 * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
15 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
16 * NONINFRINGEMENT. See the GNU General Public License for more
19 * You should have received a copy of the GNU General Public License
20 * along with this file; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 * or visit http://www.gnu.org/licenses/.
24 * This file may also be available under a different license from Cavium.
25 * Contact Cavium Networks for more information
26 **********************************************************************/
27 #include <linux/platform_device.h>
28 #include <linux/kernel.h>
29 #include <linux/module.h>
30 #include <linux/netdevice.h>
31 #include <linux/etherdevice.h>
32 #include <linux/phy.h>
33 #include <linux/slab.h>
34 #include <linux/interrupt.h>
35 #include <linux/of_net.h>
39 #include <asm/octeon/octeon.h>
41 #include "ethernet-defines.h"
42 #include "octeon-ethernet.h"
43 #include "ethernet-mem.h"
44 #include "ethernet-rx.h"
45 #include "ethernet-tx.h"
46 #include "ethernet-mdio.h"
47 #include "ethernet-util.h"
49 #include <asm/octeon/cvmx-pip.h>
50 #include <asm/octeon/cvmx-pko.h>
51 #include <asm/octeon/cvmx-fau.h>
52 #include <asm/octeon/cvmx-ipd.h>
53 #include <asm/octeon/cvmx-helper.h>
55 #include <asm/octeon/cvmx-gmxx-defs.h>
56 #include <asm/octeon/cvmx-smix-defs.h>
58 static int num_packet_buffers = 1024;
59 module_param(num_packet_buffers, int, 0444);
60 MODULE_PARM_DESC(num_packet_buffers, "\n"
61 "\tNumber of packet buffers to allocate and store in the\n"
62 "\tFPA. By default, 1024 packet buffers are used.\n");
64 int pow_receive_group = 15;
65 module_param(pow_receive_group, int, 0444);
66 MODULE_PARM_DESC(pow_receive_group, "\n"
67 "\tPOW group to receive packets from. All ethernet hardware\n"
68 "\twill be configured to send incoming packets to this POW\n"
69 "\tgroup. Also any other software can submit packets to this\n"
70 "\tgroup for the kernel to process.");
72 int pow_send_group = -1;
73 module_param(pow_send_group, int, 0644);
74 MODULE_PARM_DESC(pow_send_group, "\n"
75 "\tPOW group to send packets to other software on. This\n"
76 "\tcontrols the creation of the virtual device pow0.\n"
77 "\talways_use_pow also depends on this value.");
80 module_param(always_use_pow, int, 0444);
81 MODULE_PARM_DESC(always_use_pow, "\n"
82 "\tWhen set, always send to the pow group. This will cause\n"
83 "\tpackets sent to real ethernet devices to be sent to the\n"
84 "\tPOW group instead of the hardware. Unless some other\n"
85 "\tapplication changes the config, packets will still be\n"
86 "\treceived from the low level hardware. Use this option\n"
87 "\tto allow a CVMX app to intercept all packets from the\n"
88 "\tlinux kernel. You must specify pow_send_group along with\n"
91 char pow_send_list[128] = "";
92 module_param_string(pow_send_list, pow_send_list, sizeof(pow_send_list), 0444);
93 MODULE_PARM_DESC(pow_send_list, "\n"
94 "\tComma separated list of ethernet devices that should use the\n"
95 "\tPOW for transmit instead of the actual ethernet hardware. This\n"
96 "\tis a per port version of always_use_pow. always_use_pow takes\n"
97 "\tprecedence over this list. For example, setting this to\n"
98 "\t\"eth2,spi3,spi7\" would cause these three devices to transmit\n"
99 "\tusing the pow_send_group.");
101 int rx_napi_weight = 32;
102 module_param(rx_napi_weight, int, 0444);
103 MODULE_PARM_DESC(rx_napi_weight, "The NAPI WEIGHT parameter.");
106 * cvm_oct_poll_queue - Workqueue for polling operations.
108 struct workqueue_struct *cvm_oct_poll_queue;
111 * cvm_oct_poll_queue_stopping - flag to indicate polling should stop.
113 * Set to one right before cvm_oct_poll_queue is destroyed.
115 atomic_t cvm_oct_poll_queue_stopping = ATOMIC_INIT(0);
118 * Array of every ethernet device owned by this driver indexed by
119 * the ipd input port number.
121 struct net_device *cvm_oct_device[TOTAL_NUMBER_OF_PORTS];
123 u64 cvm_oct_tx_poll_interval;
125 static void cvm_oct_rx_refill_worker(struct work_struct *work);
126 static DECLARE_DELAYED_WORK(cvm_oct_rx_refill_work, cvm_oct_rx_refill_worker);
128 static void cvm_oct_rx_refill_worker(struct work_struct *work)
131 * FPA 0 may have been drained, try to refill it if we need
132 * more than num_packet_buffers / 2, otherwise normal receive
133 * processing will refill it. If it were drained, no packets
134 * could be received so cvm_oct_napi_poll would never be
135 * invoked to do the refill.
137 cvm_oct_rx_refill_pool(num_packet_buffers / 2);
139 if (!atomic_read(&cvm_oct_poll_queue_stopping))
140 queue_delayed_work(cvm_oct_poll_queue,
141 &cvm_oct_rx_refill_work, HZ);
144 static void cvm_oct_periodic_worker(struct work_struct *work)
146 struct octeon_ethernet *priv = container_of(work,
147 struct octeon_ethernet,
148 port_periodic_work.work);
151 priv->poll(cvm_oct_device[priv->port]);
153 cvm_oct_device[priv->port]->netdev_ops->ndo_get_stats(
154 cvm_oct_device[priv->port]);
156 if (!atomic_read(&cvm_oct_poll_queue_stopping))
157 queue_delayed_work(cvm_oct_poll_queue,
158 &priv->port_periodic_work, HZ);
161 static void cvm_oct_configure_common_hw(void)
165 cvm_oct_mem_fill_fpa(CVMX_FPA_PACKET_POOL, CVMX_FPA_PACKET_POOL_SIZE,
167 cvm_oct_mem_fill_fpa(CVMX_FPA_WQE_POOL, CVMX_FPA_WQE_POOL_SIZE,
169 if (CVMX_FPA_OUTPUT_BUFFER_POOL != CVMX_FPA_PACKET_POOL)
170 cvm_oct_mem_fill_fpa(CVMX_FPA_OUTPUT_BUFFER_POOL,
171 CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE, 128);
173 #ifdef __LITTLE_ENDIAN
175 union cvmx_ipd_ctl_status ipd_ctl_status;
176 ipd_ctl_status.u64 = cvmx_read_csr(CVMX_IPD_CTL_STATUS);
177 ipd_ctl_status.s.pkt_lend = 1;
178 ipd_ctl_status.s.wqe_lend = 1;
179 cvmx_write_csr(CVMX_IPD_CTL_STATUS, ipd_ctl_status.u64);
184 cvmx_helper_setup_red(num_packet_buffers / 4,
185 num_packet_buffers / 8);
190 * cvm_oct_free_work- Free a work queue entry
192 * @work_queue_entry: Work queue entry to free
194 * Returns Zero on success, Negative on failure.
196 int cvm_oct_free_work(void *work_queue_entry)
198 cvmx_wqe_t *work = work_queue_entry;
200 int segments = work->word2.s.bufs;
201 union cvmx_buf_ptr segment_ptr = work->packet_ptr;
204 union cvmx_buf_ptr next_ptr = *(union cvmx_buf_ptr *)
205 cvmx_phys_to_ptr(segment_ptr.s.addr - 8);
206 if (unlikely(!segment_ptr.s.i))
207 cvmx_fpa_free(cvm_oct_get_buffer_ptr(segment_ptr),
209 DONT_WRITEBACK(CVMX_FPA_PACKET_POOL_SIZE /
211 segment_ptr = next_ptr;
213 cvmx_fpa_free(work, CVMX_FPA_WQE_POOL, DONT_WRITEBACK(1));
217 EXPORT_SYMBOL(cvm_oct_free_work);
220 * cvm_oct_common_get_stats - get the low level ethernet statistics
221 * @dev: Device to get the statistics from
223 * Returns Pointer to the statistics
225 static struct net_device_stats *cvm_oct_common_get_stats(struct net_device *dev)
227 cvmx_pip_port_status_t rx_status;
228 cvmx_pko_port_status_t tx_status;
229 struct octeon_ethernet *priv = netdev_priv(dev);
231 if (priv->port < CVMX_PIP_NUM_INPUT_PORTS) {
232 if (octeon_is_simulation()) {
233 /* The simulator doesn't support statistics */
234 memset(&rx_status, 0, sizeof(rx_status));
235 memset(&tx_status, 0, sizeof(tx_status));
237 cvmx_pip_get_port_status(priv->port, 1, &rx_status);
238 cvmx_pko_get_port_status(priv->port, 1, &tx_status);
241 priv->stats.rx_packets += rx_status.inb_packets;
242 priv->stats.tx_packets += tx_status.packets;
243 priv->stats.rx_bytes += rx_status.inb_octets;
244 priv->stats.tx_bytes += tx_status.octets;
245 priv->stats.multicast += rx_status.multicast_packets;
246 priv->stats.rx_crc_errors += rx_status.inb_errors;
247 priv->stats.rx_frame_errors += rx_status.fcs_align_err_packets;
250 * The drop counter must be incremented atomically
251 * since the RX tasklet also increments it.
254 atomic64_add(rx_status.dropped_packets,
255 (atomic64_t *)&priv->stats.rx_dropped);
257 atomic_add(rx_status.dropped_packets,
258 (atomic_t *)&priv->stats.rx_dropped);
266 * cvm_oct_common_change_mtu - change the link MTU
267 * @dev: Device to change
268 * @new_mtu: The new MTU
270 * Returns Zero on success
272 static int cvm_oct_common_change_mtu(struct net_device *dev, int new_mtu)
274 struct octeon_ethernet *priv = netdev_priv(dev);
275 int interface = INTERFACE(priv->port);
276 int index = INDEX(priv->port);
277 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
284 * Limit the MTU to make sure the ethernet packets are between
285 * 64 bytes and 65535 bytes.
287 if ((new_mtu + 14 + 4 + vlan_bytes < 64)
288 || (new_mtu + 14 + 4 + vlan_bytes > 65392)) {
289 pr_err("MTU must be between %d and %d.\n",
290 64 - 14 - 4 - vlan_bytes, 65392 - 14 - 4 - vlan_bytes);
296 && (cvmx_helper_interface_get_mode(interface) !=
297 CVMX_HELPER_INTERFACE_MODE_SPI)) {
298 /* Add ethernet header and FCS, and VLAN if configured. */
299 int max_packet = new_mtu + 14 + 4 + vlan_bytes;
301 if (OCTEON_IS_MODEL(OCTEON_CN3XXX)
302 || OCTEON_IS_MODEL(OCTEON_CN58XX)) {
303 /* Signal errors on packets larger than the MTU */
304 cvmx_write_csr(CVMX_GMXX_RXX_FRM_MAX(index, interface),
308 * Set the hardware to truncate packets larger
309 * than the MTU and smaller the 64 bytes.
311 union cvmx_pip_frm_len_chkx frm_len_chk;
314 frm_len_chk.s.minlen = 64;
315 frm_len_chk.s.maxlen = max_packet;
316 cvmx_write_csr(CVMX_PIP_FRM_LEN_CHKX(interface),
320 * Set the hardware to truncate packets larger than
321 * the MTU. The jabber register must be set to a
322 * multiple of 8 bytes, so round up.
324 cvmx_write_csr(CVMX_GMXX_RXX_JABBER(index, interface),
325 (max_packet + 7) & ~7u);
331 * cvm_oct_common_set_multicast_list - set the multicast list
332 * @dev: Device to work on
334 static void cvm_oct_common_set_multicast_list(struct net_device *dev)
336 union cvmx_gmxx_prtx_cfg gmx_cfg;
337 struct octeon_ethernet *priv = netdev_priv(dev);
338 int interface = INTERFACE(priv->port);
339 int index = INDEX(priv->port);
342 && (cvmx_helper_interface_get_mode(interface) !=
343 CVMX_HELPER_INTERFACE_MODE_SPI)) {
344 union cvmx_gmxx_rxx_adr_ctl control;
347 control.s.bcst = 1; /* Allow broadcast MAC addresses */
349 if (!netdev_mc_empty(dev) || (dev->flags & IFF_ALLMULTI) ||
350 (dev->flags & IFF_PROMISC))
351 /* Force accept multicast packets */
354 /* Force reject multicast packets */
357 if (dev->flags & IFF_PROMISC)
359 * Reject matches if promisc. Since CAM is
360 * shut off, should accept everything.
362 control.s.cam_mode = 0;
364 /* Filter packets based on the CAM */
365 control.s.cam_mode = 1;
368 cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
369 cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface),
370 gmx_cfg.u64 & ~1ull);
372 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CTL(index, interface),
374 if (dev->flags & IFF_PROMISC)
375 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM_EN
376 (index, interface), 0);
378 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM_EN
379 (index, interface), 1);
381 cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface),
387 * cvm_oct_common_set_mac_address - set the hardware MAC address for a device
388 * @dev: The device in question.
389 * @addr: Address structure to change it too.
391 * Returns Zero on success
393 static int cvm_oct_set_mac_filter(struct net_device *dev)
395 struct octeon_ethernet *priv = netdev_priv(dev);
396 union cvmx_gmxx_prtx_cfg gmx_cfg;
397 int interface = INTERFACE(priv->port);
398 int index = INDEX(priv->port);
401 && (cvmx_helper_interface_get_mode(interface) !=
402 CVMX_HELPER_INTERFACE_MODE_SPI)) {
404 uint8_t *ptr = dev->dev_addr;
407 for (i = 0; i < 6; i++)
408 mac = (mac << 8) | (uint64_t)ptr[i];
411 cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
412 cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface),
413 gmx_cfg.u64 & ~1ull);
415 cvmx_write_csr(CVMX_GMXX_SMACX(index, interface), mac);
416 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM0(index, interface),
418 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM1(index, interface),
420 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM2(index, interface),
422 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM3(index, interface),
424 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM4(index, interface),
426 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM5(index, interface),
428 cvm_oct_common_set_multicast_list(dev);
429 cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface),
435 static int cvm_oct_common_set_mac_address(struct net_device *dev, void *addr)
437 int r = eth_mac_addr(dev, addr);
441 return cvm_oct_set_mac_filter(dev);
445 * cvm_oct_common_init - per network device initialization
446 * @dev: Device to initialize
448 * Returns Zero on success
450 int cvm_oct_common_init(struct net_device *dev)
452 struct octeon_ethernet *priv = netdev_priv(dev);
453 const u8 *mac = NULL;
456 mac = of_get_mac_address(priv->of_node);
459 ether_addr_copy(dev->dev_addr, mac);
461 eth_hw_addr_random(dev);
464 * Force the interface to use the POW send if always_use_pow
465 * was specified or it is in the pow send list.
467 if ((pow_send_group != -1)
468 && (always_use_pow || strstr(pow_send_list, dev->name)))
471 if (priv->queue != -1) {
472 dev->features |= NETIF_F_SG;
473 if (USE_HW_TCPUDP_CHECKSUM)
474 dev->features |= NETIF_F_IP_CSUM;
477 /* We do our own locking, Linux doesn't need to */
478 dev->features |= NETIF_F_LLTX;
479 dev->ethtool_ops = &cvm_oct_ethtool_ops;
481 cvm_oct_set_mac_filter(dev);
482 dev->netdev_ops->ndo_change_mtu(dev, dev->mtu);
485 * Zero out stats for port so we won't mistakenly show
486 * counters from the bootloader.
488 memset(dev->netdev_ops->ndo_get_stats(dev), 0,
489 sizeof(struct net_device_stats));
494 void cvm_oct_common_uninit(struct net_device *dev)
496 struct octeon_ethernet *priv = netdev_priv(dev);
499 phy_disconnect(priv->phydev);
502 static const struct net_device_ops cvm_oct_npi_netdev_ops = {
503 .ndo_init = cvm_oct_common_init,
504 .ndo_uninit = cvm_oct_common_uninit,
505 .ndo_start_xmit = cvm_oct_xmit,
506 .ndo_set_rx_mode = cvm_oct_common_set_multicast_list,
507 .ndo_set_mac_address = cvm_oct_common_set_mac_address,
508 .ndo_do_ioctl = cvm_oct_ioctl,
509 .ndo_change_mtu = cvm_oct_common_change_mtu,
510 .ndo_get_stats = cvm_oct_common_get_stats,
511 #ifdef CONFIG_NET_POLL_CONTROLLER
512 .ndo_poll_controller = cvm_oct_poll_controller,
515 static const struct net_device_ops cvm_oct_xaui_netdev_ops = {
516 .ndo_init = cvm_oct_xaui_init,
517 .ndo_uninit = cvm_oct_xaui_uninit,
518 .ndo_open = cvm_oct_xaui_open,
519 .ndo_stop = cvm_oct_xaui_stop,
520 .ndo_start_xmit = cvm_oct_xmit,
521 .ndo_set_rx_mode = cvm_oct_common_set_multicast_list,
522 .ndo_set_mac_address = cvm_oct_common_set_mac_address,
523 .ndo_do_ioctl = cvm_oct_ioctl,
524 .ndo_change_mtu = cvm_oct_common_change_mtu,
525 .ndo_get_stats = cvm_oct_common_get_stats,
526 #ifdef CONFIG_NET_POLL_CONTROLLER
527 .ndo_poll_controller = cvm_oct_poll_controller,
530 static const struct net_device_ops cvm_oct_sgmii_netdev_ops = {
531 .ndo_init = cvm_oct_sgmii_init,
532 .ndo_uninit = cvm_oct_sgmii_uninit,
533 .ndo_open = cvm_oct_sgmii_open,
534 .ndo_stop = cvm_oct_sgmii_stop,
535 .ndo_start_xmit = cvm_oct_xmit,
536 .ndo_set_rx_mode = cvm_oct_common_set_multicast_list,
537 .ndo_set_mac_address = cvm_oct_common_set_mac_address,
538 .ndo_do_ioctl = cvm_oct_ioctl,
539 .ndo_change_mtu = cvm_oct_common_change_mtu,
540 .ndo_get_stats = cvm_oct_common_get_stats,
541 #ifdef CONFIG_NET_POLL_CONTROLLER
542 .ndo_poll_controller = cvm_oct_poll_controller,
545 static const struct net_device_ops cvm_oct_spi_netdev_ops = {
546 .ndo_init = cvm_oct_spi_init,
547 .ndo_uninit = cvm_oct_spi_uninit,
548 .ndo_start_xmit = cvm_oct_xmit,
549 .ndo_set_rx_mode = cvm_oct_common_set_multicast_list,
550 .ndo_set_mac_address = cvm_oct_common_set_mac_address,
551 .ndo_do_ioctl = cvm_oct_ioctl,
552 .ndo_change_mtu = cvm_oct_common_change_mtu,
553 .ndo_get_stats = cvm_oct_common_get_stats,
554 #ifdef CONFIG_NET_POLL_CONTROLLER
555 .ndo_poll_controller = cvm_oct_poll_controller,
558 static const struct net_device_ops cvm_oct_rgmii_netdev_ops = {
559 .ndo_init = cvm_oct_rgmii_init,
560 .ndo_uninit = cvm_oct_rgmii_uninit,
561 .ndo_open = cvm_oct_rgmii_open,
562 .ndo_stop = cvm_oct_rgmii_stop,
563 .ndo_start_xmit = cvm_oct_xmit,
564 .ndo_set_rx_mode = cvm_oct_common_set_multicast_list,
565 .ndo_set_mac_address = cvm_oct_common_set_mac_address,
566 .ndo_do_ioctl = cvm_oct_ioctl,
567 .ndo_change_mtu = cvm_oct_common_change_mtu,
568 .ndo_get_stats = cvm_oct_common_get_stats,
569 #ifdef CONFIG_NET_POLL_CONTROLLER
570 .ndo_poll_controller = cvm_oct_poll_controller,
573 static const struct net_device_ops cvm_oct_pow_netdev_ops = {
574 .ndo_init = cvm_oct_common_init,
575 .ndo_start_xmit = cvm_oct_xmit_pow,
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,
586 static struct device_node *cvm_oct_of_get_child(
587 const struct device_node *parent, int reg_val)
589 struct device_node *node = NULL;
594 node = of_get_next_child(parent, node);
597 addr = of_get_property(node, "reg", &size);
598 if (addr && (be32_to_cpu(*addr) == reg_val))
604 static struct device_node *cvm_oct_node_for_port(struct device_node *pip,
605 int interface, int port)
607 struct device_node *ni, *np;
609 ni = cvm_oct_of_get_child(pip, interface);
613 np = cvm_oct_of_get_child(ni, port);
619 static int cvm_oct_probe(struct platform_device *pdev)
623 int fau = FAU_NUM_PACKET_BUFFERS_TO_FREE;
625 struct device_node *pip;
627 octeon_mdiobus_force_mod_depencency();
628 pr_notice("cavium-ethernet %s\n", OCTEON_ETHERNET_VERSION);
630 pip = pdev->dev.of_node;
632 pr_err("Error: No 'pip' in /aliases\n");
636 cvm_oct_poll_queue = create_singlethread_workqueue("octeon-ethernet");
637 if (cvm_oct_poll_queue == NULL) {
638 pr_err("octeon-ethernet: Cannot create workqueue");
642 cvm_oct_configure_common_hw();
644 cvmx_helper_initialize_packet_io_global();
646 /* Change the input group for all ports before input is enabled */
647 num_interfaces = cvmx_helper_get_number_of_interfaces();
648 for (interface = 0; interface < num_interfaces; interface++) {
649 int num_ports = cvmx_helper_ports_on_interface(interface);
652 for (port = cvmx_helper_get_ipd_port(interface, 0);
653 port < cvmx_helper_get_ipd_port(interface, num_ports);
655 union cvmx_pip_prt_tagx pip_prt_tagx;
658 cvmx_read_csr(CVMX_PIP_PRT_TAGX(port));
659 pip_prt_tagx.s.grp = pow_receive_group;
660 cvmx_write_csr(CVMX_PIP_PRT_TAGX(port),
665 cvmx_helper_ipd_and_packet_input_enable();
667 memset(cvm_oct_device, 0, sizeof(cvm_oct_device));
670 * Initialize the FAU used for counting packet buffers that
673 cvmx_fau_atomic_write32(FAU_NUM_PACKET_BUFFERS_TO_FREE, 0);
675 /* Initialize the FAU used for counting tx SKBs that need to be freed */
676 cvmx_fau_atomic_write32(FAU_TOTAL_TX_TO_CLEAN, 0);
678 if ((pow_send_group != -1)) {
679 struct net_device *dev;
681 pr_info("\tConfiguring device for POW only access\n");
682 dev = alloc_etherdev(sizeof(struct octeon_ethernet));
684 /* Initialize the device private structure. */
685 struct octeon_ethernet *priv = netdev_priv(dev);
687 dev->netdev_ops = &cvm_oct_pow_netdev_ops;
688 priv->imode = CVMX_HELPER_INTERFACE_MODE_DISABLED;
689 priv->port = CVMX_PIP_NUM_INPUT_PORTS;
691 strcpy(dev->name, "pow%d");
692 for (qos = 0; qos < 16; qos++)
693 skb_queue_head_init(&priv->tx_free_list[qos]);
695 if (register_netdev(dev) < 0) {
696 pr_err("Failed to register ethernet device for POW\n");
699 cvm_oct_device[CVMX_PIP_NUM_INPUT_PORTS] = dev;
700 pr_info("%s: POW send group %d, receive group %d\n",
701 dev->name, pow_send_group,
705 pr_err("Failed to allocate ethernet device for POW\n");
709 num_interfaces = cvmx_helper_get_number_of_interfaces();
710 for (interface = 0; interface < num_interfaces; interface++) {
711 cvmx_helper_interface_mode_t imode =
712 cvmx_helper_interface_get_mode(interface);
713 int num_ports = cvmx_helper_ports_on_interface(interface);
718 port = cvmx_helper_get_ipd_port(interface, 0);
719 port < cvmx_helper_get_ipd_port(interface, num_ports);
720 port_index++, port++) {
721 struct octeon_ethernet *priv;
722 struct net_device *dev =
723 alloc_etherdev(sizeof(struct octeon_ethernet));
725 pr_err("Failed to allocate ethernet device for port %d\n",
730 /* Initialize the device private structure. */
731 priv = netdev_priv(dev);
733 priv->of_node = cvm_oct_node_for_port(pip, interface,
736 INIT_DELAYED_WORK(&priv->port_periodic_work,
737 cvm_oct_periodic_worker);
740 priv->queue = cvmx_pko_get_base_queue(priv->port);
741 priv->fau = fau - cvmx_pko_get_num_queues(port) * 4;
742 for (qos = 0; qos < 16; qos++)
743 skb_queue_head_init(&priv->tx_free_list[qos]);
744 for (qos = 0; qos < cvmx_pko_get_num_queues(port);
746 cvmx_fau_atomic_write32(priv->fau + qos * 4, 0);
748 switch (priv->imode) {
750 /* These types don't support ports to IPD/PKO */
751 case CVMX_HELPER_INTERFACE_MODE_DISABLED:
752 case CVMX_HELPER_INTERFACE_MODE_PCIE:
753 case CVMX_HELPER_INTERFACE_MODE_PICMG:
756 case CVMX_HELPER_INTERFACE_MODE_NPI:
757 dev->netdev_ops = &cvm_oct_npi_netdev_ops;
758 strcpy(dev->name, "npi%d");
761 case CVMX_HELPER_INTERFACE_MODE_XAUI:
762 dev->netdev_ops = &cvm_oct_xaui_netdev_ops;
763 strcpy(dev->name, "xaui%d");
766 case CVMX_HELPER_INTERFACE_MODE_LOOP:
767 dev->netdev_ops = &cvm_oct_npi_netdev_ops;
768 strcpy(dev->name, "loop%d");
771 case CVMX_HELPER_INTERFACE_MODE_SGMII:
772 dev->netdev_ops = &cvm_oct_sgmii_netdev_ops;
773 strcpy(dev->name, "eth%d");
776 case CVMX_HELPER_INTERFACE_MODE_SPI:
777 dev->netdev_ops = &cvm_oct_spi_netdev_ops;
778 strcpy(dev->name, "spi%d");
781 case CVMX_HELPER_INTERFACE_MODE_RGMII:
782 case CVMX_HELPER_INTERFACE_MODE_GMII:
783 dev->netdev_ops = &cvm_oct_rgmii_netdev_ops;
784 strcpy(dev->name, "eth%d");
788 if (!dev->netdev_ops) {
790 } else if (register_netdev(dev) < 0) {
791 pr_err("Failed to register ethernet device for interface %d, port %d\n",
792 interface, priv->port);
795 cvm_oct_device[priv->port] = dev;
797 cvmx_pko_get_num_queues(priv->port) *
799 queue_delayed_work(cvm_oct_poll_queue,
800 &priv->port_periodic_work, HZ);
805 cvm_oct_tx_initialize();
806 cvm_oct_rx_initialize();
809 * 150 uS: about 10 1500-byte packets at 1GE.
811 cvm_oct_tx_poll_interval = 150 * (octeon_get_clock_rate() / 1000000);
813 queue_delayed_work(cvm_oct_poll_queue, &cvm_oct_rx_refill_work, HZ);
818 static int cvm_oct_remove(struct platform_device *pdev)
822 /* Disable POW interrupt */
823 cvmx_write_csr(CVMX_POW_WQ_INT_THRX(pow_receive_group), 0);
827 /* Free the interrupt handler */
828 free_irq(OCTEON_IRQ_WORKQ0 + pow_receive_group, cvm_oct_device);
830 atomic_inc_return(&cvm_oct_poll_queue_stopping);
831 cancel_delayed_work_sync(&cvm_oct_rx_refill_work);
833 cvm_oct_rx_shutdown();
834 cvm_oct_tx_shutdown();
838 /* Free the ethernet devices */
839 for (port = 0; port < TOTAL_NUMBER_OF_PORTS; port++) {
840 if (cvm_oct_device[port]) {
841 struct net_device *dev = cvm_oct_device[port];
842 struct octeon_ethernet *priv = netdev_priv(dev);
844 cancel_delayed_work_sync(&priv->port_periodic_work);
846 cvm_oct_tx_shutdown_dev(dev);
847 unregister_netdev(dev);
849 cvm_oct_device[port] = NULL;
853 destroy_workqueue(cvm_oct_poll_queue);
859 /* Free the HW pools */
860 cvm_oct_mem_empty_fpa(CVMX_FPA_PACKET_POOL, CVMX_FPA_PACKET_POOL_SIZE,
862 cvm_oct_mem_empty_fpa(CVMX_FPA_WQE_POOL, CVMX_FPA_WQE_POOL_SIZE,
864 if (CVMX_FPA_OUTPUT_BUFFER_POOL != CVMX_FPA_PACKET_POOL)
865 cvm_oct_mem_empty_fpa(CVMX_FPA_OUTPUT_BUFFER_POOL,
866 CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE, 128);
870 static const struct of_device_id cvm_oct_match[] = {
872 .compatible = "cavium,octeon-3860-pip",
876 MODULE_DEVICE_TABLE(of, cvm_oct_match);
878 static struct platform_driver cvm_oct_driver = {
879 .probe = cvm_oct_probe,
880 .remove = cvm_oct_remove,
882 .name = KBUILD_MODNAME,
883 .of_match_table = cvm_oct_match,
887 module_platform_driver(cvm_oct_driver);
889 MODULE_LICENSE("GPL");
890 MODULE_AUTHOR("Cavium Networks <support@caviumnetworks.com>");
891 MODULE_DESCRIPTION("Cavium Networks Octeon ethernet driver.");