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/init.h>
30 #include <linux/module.h>
31 #include <linux/netdevice.h>
32 #include <linux/etherdevice.h>
33 #include <linux/phy.h>
34 #include <linux/slab.h>
35 #include <linux/interrupt.h>
36 #include <linux/of_net.h>
40 #include <asm/octeon/octeon.h>
42 #include "ethernet-defines.h"
43 #include "octeon-ethernet.h"
44 #include "ethernet-mem.h"
45 #include "ethernet-rx.h"
46 #include "ethernet-tx.h"
47 #include "ethernet-mdio.h"
48 #include "ethernet-util.h"
50 #include <asm/octeon/cvmx-pip.h>
51 #include <asm/octeon/cvmx-pko.h>
52 #include <asm/octeon/cvmx-fau.h>
53 #include <asm/octeon/cvmx-ipd.h>
54 #include <asm/octeon/cvmx-helper.h>
56 #include <asm/octeon/cvmx-gmxx-defs.h>
57 #include <asm/octeon/cvmx-smix-defs.h>
59 #if defined(CONFIG_CAVIUM_OCTEON_NUM_PACKET_BUFFERS) \
60 && CONFIG_CAVIUM_OCTEON_NUM_PACKET_BUFFERS
61 int num_packet_buffers = CONFIG_CAVIUM_OCTEON_NUM_PACKET_BUFFERS;
63 int num_packet_buffers = 1024;
65 module_param(num_packet_buffers, int, 0444);
66 MODULE_PARM_DESC(num_packet_buffers, "\n"
67 "\tNumber of packet buffers to allocate and store in the\n"
68 "\tFPA. By default, 1024 packet buffers are used unless\n"
69 "\tCONFIG_CAVIUM_OCTEON_NUM_PACKET_BUFFERS is defined.");
71 int pow_receive_group = 15;
72 module_param(pow_receive_group, int, 0444);
73 MODULE_PARM_DESC(pow_receive_group, "\n"
74 "\tPOW group to receive packets from. All ethernet hardware\n"
75 "\twill be configured to send incoming packets to this POW\n"
76 "\tgroup. Also any other software can submit packets to this\n"
77 "\tgroup for the kernel to process.");
79 int pow_send_group = -1;
80 module_param(pow_send_group, int, 0644);
81 MODULE_PARM_DESC(pow_send_group, "\n"
82 "\tPOW group to send packets to other software on. This\n"
83 "\tcontrols the creation of the virtual device pow0.\n"
84 "\talways_use_pow also depends on this value.");
87 module_param(always_use_pow, int, 0444);
88 MODULE_PARM_DESC(always_use_pow, "\n"
89 "\tWhen set, always send to the pow group. This will cause\n"
90 "\tpackets sent to real ethernet devices to be sent to the\n"
91 "\tPOW group instead of the hardware. Unless some other\n"
92 "\tapplication changes the config, packets will still be\n"
93 "\treceived from the low level hardware. Use this option\n"
94 "\tto allow a CVMX app to intercept all packets from the\n"
95 "\tlinux kernel. You must specify pow_send_group along with\n"
98 char pow_send_list[128] = "";
99 module_param_string(pow_send_list, pow_send_list, sizeof(pow_send_list), 0444);
100 MODULE_PARM_DESC(pow_send_list, "\n"
101 "\tComma separated list of ethernet devices that should use the\n"
102 "\tPOW for transmit instead of the actual ethernet hardware. This\n"
103 "\tis a per port version of always_use_pow. always_use_pow takes\n"
104 "\tprecedence over this list. For example, setting this to\n"
105 "\t\"eth2,spi3,spi7\" would cause these three devices to transmit\n"
106 "\tusing the pow_send_group.");
108 int max_rx_cpus = -1;
109 module_param(max_rx_cpus, int, 0444);
110 MODULE_PARM_DESC(max_rx_cpus, "\n"
111 "\t\tThe maximum number of CPUs to use for packet reception.\n"
112 "\t\tUse -1 to use all available CPUs.");
114 int rx_napi_weight = 32;
115 module_param(rx_napi_weight, int, 0444);
116 MODULE_PARM_DESC(rx_napi_weight, "The NAPI WEIGHT parameter.");
119 * cvm_oct_poll_queue - Workqueue for polling operations.
121 struct workqueue_struct *cvm_oct_poll_queue;
124 * cvm_oct_poll_queue_stopping - flag to indicate polling should stop.
126 * Set to one right before cvm_oct_poll_queue is destroyed.
128 atomic_t cvm_oct_poll_queue_stopping = ATOMIC_INIT(0);
131 * Array of every ethernet device owned by this driver indexed by
132 * the ipd input port number.
134 struct net_device *cvm_oct_device[TOTAL_NUMBER_OF_PORTS];
136 u64 cvm_oct_tx_poll_interval;
138 static void cvm_oct_rx_refill_worker(struct work_struct *work);
139 static DECLARE_DELAYED_WORK(cvm_oct_rx_refill_work, cvm_oct_rx_refill_worker);
141 static void cvm_oct_rx_refill_worker(struct work_struct *work)
144 * FPA 0 may have been drained, try to refill it if we need
145 * more than num_packet_buffers / 2, otherwise normal receive
146 * processing will refill it. If it were drained, no packets
147 * could be received so cvm_oct_napi_poll would never be
148 * invoked to do the refill.
150 cvm_oct_rx_refill_pool(num_packet_buffers / 2);
152 if (!atomic_read(&cvm_oct_poll_queue_stopping))
153 queue_delayed_work(cvm_oct_poll_queue,
154 &cvm_oct_rx_refill_work, HZ);
157 static void cvm_oct_periodic_worker(struct work_struct *work)
159 struct octeon_ethernet *priv = container_of(work,
160 struct octeon_ethernet,
161 port_periodic_work.work);
164 priv->poll(cvm_oct_device[priv->port]);
166 cvm_oct_device[priv->port]->netdev_ops->ndo_get_stats(
167 cvm_oct_device[priv->port]);
169 if (!atomic_read(&cvm_oct_poll_queue_stopping))
170 queue_delayed_work(cvm_oct_poll_queue,
171 &priv->port_periodic_work, HZ);
174 static void cvm_oct_configure_common_hw(void)
178 cvm_oct_mem_fill_fpa(CVMX_FPA_PACKET_POOL, CVMX_FPA_PACKET_POOL_SIZE,
180 cvm_oct_mem_fill_fpa(CVMX_FPA_WQE_POOL, CVMX_FPA_WQE_POOL_SIZE,
182 if (CVMX_FPA_OUTPUT_BUFFER_POOL != CVMX_FPA_PACKET_POOL)
183 cvm_oct_mem_fill_fpa(CVMX_FPA_OUTPUT_BUFFER_POOL,
184 CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE, 128);
187 cvmx_helper_setup_red(num_packet_buffers / 4,
188 num_packet_buffers / 8);
193 * cvm_oct_free_work- Free a work queue entry
195 * @work_queue_entry: Work queue entry to free
197 * Returns Zero on success, Negative on failure.
199 int cvm_oct_free_work(void *work_queue_entry)
201 cvmx_wqe_t *work = work_queue_entry;
203 int segments = work->word2.s.bufs;
204 union cvmx_buf_ptr segment_ptr = work->packet_ptr;
207 union cvmx_buf_ptr next_ptr = *(union cvmx_buf_ptr *)
208 cvmx_phys_to_ptr(segment_ptr.s.addr - 8);
209 if (unlikely(!segment_ptr.s.i))
210 cvmx_fpa_free(cvm_oct_get_buffer_ptr(segment_ptr),
212 DONT_WRITEBACK(CVMX_FPA_PACKET_POOL_SIZE /
214 segment_ptr = next_ptr;
216 cvmx_fpa_free(work, CVMX_FPA_WQE_POOL, DONT_WRITEBACK(1));
220 EXPORT_SYMBOL(cvm_oct_free_work);
223 * cvm_oct_common_get_stats - get the low level ethernet statistics
224 * @dev: Device to get the statistics from
226 * Returns Pointer to the statistics
228 static struct net_device_stats *cvm_oct_common_get_stats(struct net_device *dev)
230 cvmx_pip_port_status_t rx_status;
231 cvmx_pko_port_status_t tx_status;
232 struct octeon_ethernet *priv = netdev_priv(dev);
234 if (priv->port < CVMX_PIP_NUM_INPUT_PORTS) {
235 if (octeon_is_simulation()) {
236 /* The simulator doesn't support statistics */
237 memset(&rx_status, 0, sizeof(rx_status));
238 memset(&tx_status, 0, sizeof(tx_status));
240 cvmx_pip_get_port_status(priv->port, 1, &rx_status);
241 cvmx_pko_get_port_status(priv->port, 1, &tx_status);
244 priv->stats.rx_packets += rx_status.inb_packets;
245 priv->stats.tx_packets += tx_status.packets;
246 priv->stats.rx_bytes += rx_status.inb_octets;
247 priv->stats.tx_bytes += tx_status.octets;
248 priv->stats.multicast += rx_status.multicast_packets;
249 priv->stats.rx_crc_errors += rx_status.inb_errors;
250 priv->stats.rx_frame_errors += rx_status.fcs_align_err_packets;
253 * The drop counter must be incremented atomically
254 * since the RX tasklet also increments it.
257 atomic64_add(rx_status.dropped_packets,
258 (atomic64_t *)&priv->stats.rx_dropped);
260 atomic_add(rx_status.dropped_packets,
261 (atomic_t *)&priv->stats.rx_dropped);
269 * cvm_oct_common_change_mtu - change the link MTU
270 * @dev: Device to change
271 * @new_mtu: The new MTU
273 * Returns Zero on success
275 static int cvm_oct_common_change_mtu(struct net_device *dev, int new_mtu)
277 struct octeon_ethernet *priv = netdev_priv(dev);
278 int interface = INTERFACE(priv->port);
279 int index = INDEX(priv->port);
280 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
287 * Limit the MTU to make sure the ethernet packets are between
288 * 64 bytes and 65535 bytes.
290 if ((new_mtu + 14 + 4 + vlan_bytes < 64)
291 || (new_mtu + 14 + 4 + vlan_bytes > 65392)) {
292 pr_err("MTU must be between %d and %d.\n",
293 64 - 14 - 4 - vlan_bytes, 65392 - 14 - 4 - vlan_bytes);
299 && (cvmx_helper_interface_get_mode(interface) !=
300 CVMX_HELPER_INTERFACE_MODE_SPI)) {
301 /* Add ethernet header and FCS, and VLAN if configured. */
302 int max_packet = new_mtu + 14 + 4 + vlan_bytes;
304 if (OCTEON_IS_MODEL(OCTEON_CN3XXX)
305 || OCTEON_IS_MODEL(OCTEON_CN58XX)) {
306 /* Signal errors on packets larger than the MTU */
307 cvmx_write_csr(CVMX_GMXX_RXX_FRM_MAX(index, interface),
311 * Set the hardware to truncate packets larger
312 * than the MTU and smaller the 64 bytes.
314 union cvmx_pip_frm_len_chkx frm_len_chk;
316 frm_len_chk.s.minlen = 64;
317 frm_len_chk.s.maxlen = max_packet;
318 cvmx_write_csr(CVMX_PIP_FRM_LEN_CHKX(interface),
322 * Set the hardware to truncate packets larger than
323 * the MTU. The jabber register must be set to a
324 * multiple of 8 bytes, so round up.
326 cvmx_write_csr(CVMX_GMXX_RXX_JABBER(index, interface),
327 (max_packet + 7) & ~7u);
333 * cvm_oct_common_set_multicast_list - set the multicast list
334 * @dev: Device to work on
336 static void cvm_oct_common_set_multicast_list(struct net_device *dev)
338 union cvmx_gmxx_prtx_cfg gmx_cfg;
339 struct octeon_ethernet *priv = netdev_priv(dev);
340 int interface = INTERFACE(priv->port);
341 int index = INDEX(priv->port);
344 && (cvmx_helper_interface_get_mode(interface) !=
345 CVMX_HELPER_INTERFACE_MODE_SPI)) {
346 union cvmx_gmxx_rxx_adr_ctl control;
348 control.s.bcst = 1; /* Allow broadcast MAC addresses */
350 if (!netdev_mc_empty(dev) || (dev->flags & IFF_ALLMULTI) ||
351 (dev->flags & IFF_PROMISC))
352 /* Force accept multicast packets */
355 /* Force reject multicast packets */
358 if (dev->flags & IFF_PROMISC)
360 * Reject matches if promisc. Since CAM is
361 * shut off, should accept everything.
363 control.s.cam_mode = 0;
365 /* Filter packets based on the CAM */
366 control.s.cam_mode = 1;
369 cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
370 cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface),
371 gmx_cfg.u64 & ~1ull);
373 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CTL(index, interface),
375 if (dev->flags & IFF_PROMISC)
376 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM_EN
377 (index, interface), 0);
379 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM_EN
380 (index, interface), 1);
382 cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface),
388 * cvm_oct_common_set_mac_address - set the hardware MAC address for a device
389 * @dev: The device in question.
390 * @addr: Address structure to change it too.
392 * Returns Zero on success
394 static int cvm_oct_set_mac_filter(struct net_device *dev)
396 struct octeon_ethernet *priv = netdev_priv(dev);
397 union cvmx_gmxx_prtx_cfg gmx_cfg;
398 int interface = INTERFACE(priv->port);
399 int index = INDEX(priv->port);
402 && (cvmx_helper_interface_get_mode(interface) !=
403 CVMX_HELPER_INTERFACE_MODE_SPI)) {
405 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);
458 if (mac && is_valid_ether_addr(mac))
459 memcpy(dev->dev_addr, mac, ETH_ALEN);
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 SET_ETHTOOL_OPS(dev, &cvm_oct_ethtool_ops);
481 cvm_oct_phy_setup_device(dev);
482 cvm_oct_set_mac_filter(dev);
483 dev->netdev_ops->ndo_change_mtu(dev, dev->mtu);
486 * Zero out stats for port so we won't mistakenly show
487 * counters from the bootloader.
489 memset(dev->netdev_ops->ndo_get_stats(dev), 0,
490 sizeof(struct net_device_stats));
495 void cvm_oct_common_uninit(struct net_device *dev)
497 struct octeon_ethernet *priv = netdev_priv(dev);
500 phy_disconnect(priv->phydev);
503 static const struct net_device_ops cvm_oct_npi_netdev_ops = {
504 .ndo_init = cvm_oct_common_init,
505 .ndo_uninit = cvm_oct_common_uninit,
506 .ndo_start_xmit = cvm_oct_xmit,
507 .ndo_set_rx_mode = cvm_oct_common_set_multicast_list,
508 .ndo_set_mac_address = cvm_oct_common_set_mac_address,
509 .ndo_do_ioctl = cvm_oct_ioctl,
510 .ndo_change_mtu = cvm_oct_common_change_mtu,
511 .ndo_get_stats = cvm_oct_common_get_stats,
512 #ifdef CONFIG_NET_POLL_CONTROLLER
513 .ndo_poll_controller = cvm_oct_poll_controller,
516 static const struct net_device_ops cvm_oct_xaui_netdev_ops = {
517 .ndo_init = cvm_oct_xaui_init,
518 .ndo_uninit = cvm_oct_xaui_uninit,
519 .ndo_open = cvm_oct_xaui_open,
520 .ndo_stop = cvm_oct_xaui_stop,
521 .ndo_start_xmit = cvm_oct_xmit,
522 .ndo_set_rx_mode = cvm_oct_common_set_multicast_list,
523 .ndo_set_mac_address = cvm_oct_common_set_mac_address,
524 .ndo_do_ioctl = cvm_oct_ioctl,
525 .ndo_change_mtu = cvm_oct_common_change_mtu,
526 .ndo_get_stats = cvm_oct_common_get_stats,
527 #ifdef CONFIG_NET_POLL_CONTROLLER
528 .ndo_poll_controller = cvm_oct_poll_controller,
531 static const struct net_device_ops cvm_oct_sgmii_netdev_ops = {
532 .ndo_init = cvm_oct_sgmii_init,
533 .ndo_uninit = cvm_oct_sgmii_uninit,
534 .ndo_open = cvm_oct_sgmii_open,
535 .ndo_stop = cvm_oct_sgmii_stop,
536 .ndo_start_xmit = cvm_oct_xmit,
537 .ndo_set_rx_mode = cvm_oct_common_set_multicast_list,
538 .ndo_set_mac_address = cvm_oct_common_set_mac_address,
539 .ndo_do_ioctl = cvm_oct_ioctl,
540 .ndo_change_mtu = cvm_oct_common_change_mtu,
541 .ndo_get_stats = cvm_oct_common_get_stats,
542 #ifdef CONFIG_NET_POLL_CONTROLLER
543 .ndo_poll_controller = cvm_oct_poll_controller,
546 static const struct net_device_ops cvm_oct_spi_netdev_ops = {
547 .ndo_init = cvm_oct_spi_init,
548 .ndo_uninit = cvm_oct_spi_uninit,
549 .ndo_start_xmit = cvm_oct_xmit,
550 .ndo_set_rx_mode = cvm_oct_common_set_multicast_list,
551 .ndo_set_mac_address = cvm_oct_common_set_mac_address,
552 .ndo_do_ioctl = cvm_oct_ioctl,
553 .ndo_change_mtu = cvm_oct_common_change_mtu,
554 .ndo_get_stats = cvm_oct_common_get_stats,
555 #ifdef CONFIG_NET_POLL_CONTROLLER
556 .ndo_poll_controller = cvm_oct_poll_controller,
559 static const struct net_device_ops cvm_oct_rgmii_netdev_ops = {
560 .ndo_init = cvm_oct_rgmii_init,
561 .ndo_uninit = cvm_oct_rgmii_uninit,
562 .ndo_open = cvm_oct_rgmii_open,
563 .ndo_stop = cvm_oct_rgmii_stop,
564 .ndo_start_xmit = cvm_oct_xmit,
565 .ndo_set_rx_mode = cvm_oct_common_set_multicast_list,
566 .ndo_set_mac_address = cvm_oct_common_set_mac_address,
567 .ndo_do_ioctl = cvm_oct_ioctl,
568 .ndo_change_mtu = cvm_oct_common_change_mtu,
569 .ndo_get_stats = cvm_oct_common_get_stats,
570 #ifdef CONFIG_NET_POLL_CONTROLLER
571 .ndo_poll_controller = cvm_oct_poll_controller,
574 static const struct net_device_ops cvm_oct_pow_netdev_ops = {
575 .ndo_init = cvm_oct_common_init,
576 .ndo_start_xmit = cvm_oct_xmit_pow,
577 .ndo_set_rx_mode = cvm_oct_common_set_multicast_list,
578 .ndo_set_mac_address = cvm_oct_common_set_mac_address,
579 .ndo_do_ioctl = cvm_oct_ioctl,
580 .ndo_change_mtu = cvm_oct_common_change_mtu,
581 .ndo_get_stats = cvm_oct_common_get_stats,
582 #ifdef CONFIG_NET_POLL_CONTROLLER
583 .ndo_poll_controller = cvm_oct_poll_controller,
587 extern void octeon_mdiobus_force_mod_depencency(void);
589 static struct device_node *cvm_oct_of_get_child(
590 const struct device_node *parent, int reg_val)
592 struct device_node *node = NULL;
597 node = of_get_next_child(parent, node);
600 addr = of_get_property(node, "reg", &size);
601 if (addr && (be32_to_cpu(*addr) == reg_val))
607 static struct device_node *cvm_oct_node_for_port(struct device_node *pip,
608 int interface, int port)
610 struct device_node *ni, *np;
612 ni = cvm_oct_of_get_child(pip, interface);
616 np = cvm_oct_of_get_child(ni, port);
622 static int cvm_oct_probe(struct platform_device *pdev)
626 int fau = FAU_NUM_PACKET_BUFFERS_TO_FREE;
628 struct device_node *pip;
630 octeon_mdiobus_force_mod_depencency();
631 pr_notice("cavium-ethernet %s\n", OCTEON_ETHERNET_VERSION);
633 pip = pdev->dev.of_node;
635 pr_err("Error: No 'pip' in /aliases\n");
639 cvm_oct_poll_queue = create_singlethread_workqueue("octeon-ethernet");
640 if (cvm_oct_poll_queue == NULL) {
641 pr_err("octeon-ethernet: Cannot create workqueue");
645 cvm_oct_configure_common_hw();
647 cvmx_helper_initialize_packet_io_global();
649 /* Change the input group for all ports before input is enabled */
650 num_interfaces = cvmx_helper_get_number_of_interfaces();
651 for (interface = 0; interface < num_interfaces; interface++) {
652 int num_ports = cvmx_helper_ports_on_interface(interface);
655 for (port = cvmx_helper_get_ipd_port(interface, 0);
656 port < cvmx_helper_get_ipd_port(interface, num_ports);
658 union cvmx_pip_prt_tagx pip_prt_tagx;
660 cvmx_read_csr(CVMX_PIP_PRT_TAGX(port));
661 pip_prt_tagx.s.grp = pow_receive_group;
662 cvmx_write_csr(CVMX_PIP_PRT_TAGX(port),
667 cvmx_helper_ipd_and_packet_input_enable();
669 memset(cvm_oct_device, 0, sizeof(cvm_oct_device));
672 * Initialize the FAU used for counting packet buffers that
675 cvmx_fau_atomic_write32(FAU_NUM_PACKET_BUFFERS_TO_FREE, 0);
677 /* Initialize the FAU used for counting tx SKBs that need to be freed */
678 cvmx_fau_atomic_write32(FAU_TOTAL_TX_TO_CLEAN, 0);
680 if ((pow_send_group != -1)) {
681 struct net_device *dev;
682 pr_info("\tConfiguring device for POW only access\n");
683 dev = alloc_etherdev(sizeof(struct octeon_ethernet));
685 /* Initialize the device private structure. */
686 struct octeon_ethernet *priv = netdev_priv(dev);
688 dev->netdev_ops = &cvm_oct_pow_netdev_ops;
689 priv->imode = CVMX_HELPER_INTERFACE_MODE_DISABLED;
690 priv->port = CVMX_PIP_NUM_INPUT_PORTS;
692 strcpy(dev->name, "pow%d");
693 for (qos = 0; qos < 16; qos++)
694 skb_queue_head_init(&priv->tx_free_list[qos]);
696 if (register_netdev(dev) < 0) {
697 pr_err("Failed to register ethernet device for POW\n");
700 cvm_oct_device[CVMX_PIP_NUM_INPUT_PORTS] = dev;
701 pr_info("%s: POW send group %d, receive group %d\n",
702 dev->name, pow_send_group,
706 pr_err("Failed to allocate ethernet device for POW\n");
710 num_interfaces = cvmx_helper_get_number_of_interfaces();
711 for (interface = 0; interface < num_interfaces; interface++) {
712 cvmx_helper_interface_mode_t imode =
713 cvmx_helper_interface_get_mode(interface);
714 int num_ports = cvmx_helper_ports_on_interface(interface);
719 port = cvmx_helper_get_ipd_port(interface, 0);
720 port < cvmx_helper_get_ipd_port(interface, num_ports);
721 port_index++, port++) {
722 struct octeon_ethernet *priv;
723 struct net_device *dev =
724 alloc_etherdev(sizeof(struct octeon_ethernet));
726 pr_err("Failed to allocate ethernet device for port %d\n", port);
730 /* Initialize the device private structure. */
731 priv = netdev_priv(dev);
732 priv->of_node = cvm_oct_node_for_port(pip, interface,
735 INIT_DELAYED_WORK(&priv->port_periodic_work,
736 cvm_oct_periodic_worker);
739 priv->queue = cvmx_pko_get_base_queue(priv->port);
740 priv->fau = fau - cvmx_pko_get_num_queues(port) * 4;
741 for (qos = 0; qos < 16; qos++)
742 skb_queue_head_init(&priv->tx_free_list[qos]);
743 for (qos = 0; qos < cvmx_pko_get_num_queues(port);
745 cvmx_fau_atomic_write32(priv->fau + qos * 4, 0);
747 switch (priv->imode) {
749 /* These types don't support ports to IPD/PKO */
750 case CVMX_HELPER_INTERFACE_MODE_DISABLED:
751 case CVMX_HELPER_INTERFACE_MODE_PCIE:
752 case CVMX_HELPER_INTERFACE_MODE_PICMG:
755 case CVMX_HELPER_INTERFACE_MODE_NPI:
756 dev->netdev_ops = &cvm_oct_npi_netdev_ops;
757 strcpy(dev->name, "npi%d");
760 case CVMX_HELPER_INTERFACE_MODE_XAUI:
761 dev->netdev_ops = &cvm_oct_xaui_netdev_ops;
762 strcpy(dev->name, "xaui%d");
765 case CVMX_HELPER_INTERFACE_MODE_LOOP:
766 dev->netdev_ops = &cvm_oct_npi_netdev_ops;
767 strcpy(dev->name, "loop%d");
770 case CVMX_HELPER_INTERFACE_MODE_SGMII:
771 dev->netdev_ops = &cvm_oct_sgmii_netdev_ops;
772 strcpy(dev->name, "eth%d");
775 case CVMX_HELPER_INTERFACE_MODE_SPI:
776 dev->netdev_ops = &cvm_oct_spi_netdev_ops;
777 strcpy(dev->name, "spi%d");
780 case CVMX_HELPER_INTERFACE_MODE_RGMII:
781 case CVMX_HELPER_INTERFACE_MODE_GMII:
782 dev->netdev_ops = &cvm_oct_rgmii_netdev_ops;
783 strcpy(dev->name, "eth%d");
787 if (!dev->netdev_ops) {
789 } else if (register_netdev(dev) < 0) {
790 pr_err("Failed to register ethernet device "
791 "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 packtes 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);
843 cancel_delayed_work_sync(&priv->port_periodic_work);
845 cvm_oct_tx_shutdown_dev(dev);
846 unregister_netdev(dev);
848 cvm_oct_device[port] = NULL;
852 destroy_workqueue(cvm_oct_poll_queue);
858 /* Free the HW pools */
859 cvm_oct_mem_empty_fpa(CVMX_FPA_PACKET_POOL, CVMX_FPA_PACKET_POOL_SIZE,
861 cvm_oct_mem_empty_fpa(CVMX_FPA_WQE_POOL, CVMX_FPA_WQE_POOL_SIZE,
863 if (CVMX_FPA_OUTPUT_BUFFER_POOL != CVMX_FPA_PACKET_POOL)
864 cvm_oct_mem_empty_fpa(CVMX_FPA_OUTPUT_BUFFER_POOL,
865 CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE, 128);
869 static struct of_device_id cvm_oct_match[] = {
871 .compatible = "cavium,octeon-3860-pip",
875 MODULE_DEVICE_TABLE(of, cvm_oct_match);
877 static struct platform_driver cvm_oct_driver = {
878 .probe = cvm_oct_probe,
879 .remove = cvm_oct_remove,
881 .owner = THIS_MODULE,
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.");