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GUI: Fix Tomato RAF theme for all builds. Compilation typo.
[tomato.git] / release / src-rt-6.x.4708 / linux / linux-2.6.36 / drivers / staging / octeon / ethernet.c
blob2078c5c08b15a28ed652100113f44adefd137579
1 /**********************************************************************
2 * Author: Cavium Networks
3 *
4 * Contact: support@caviumnetworks.com
5 * This file is part of the OCTEON SDK
6 *
7 * Copyright (c) 2003-2007 Cavium Networks
8 *
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.
12 *
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
17 * details.
18 *
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/.
23 *
24 * This file may also be available under a different license from Cavium.
25 * Contact Cavium Networks for more information
26 **********************************************************************/
27 #include <linux/kernel.h>
28 #include <linux/init.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
35 #include <net/dst.h>
36
37 #include <asm/octeon/octeon.h>
38
39 #include "ethernet-defines.h"
40 #include "octeon-ethernet.h"
41 #include "ethernet-mem.h"
42 #include "ethernet-rx.h"
43 #include "ethernet-tx.h"
44 #include "ethernet-mdio.h"
45 #include "ethernet-util.h"
46
47 #include "cvmx-pip.h"
48 #include "cvmx-pko.h"
49 #include "cvmx-fau.h"
50 #include "cvmx-ipd.h"
51 #include "cvmx-helper.h"
52
53 #include "cvmx-gmxx-defs.h"
54 #include "cvmx-smix-defs.h"
55
56 #if defined(CONFIG_CAVIUM_OCTEON_NUM_PACKET_BUFFERS) && \
57 CONFIG_CAVIUM_OCTEON_NUM_PACKET_BUFFERS
58 int num_packet_buffers = CONFIG_CAVIUM_OCTEON_NUM_PACKET_BUFFERS;
59 #else
60 int num_packet_buffers = 1024;
61 #endif
62 module_param(num_packet_buffers, int, 0444);
63 MODULE_PARM_DESC(num_packet_buffers, "\n"
64 "\tNumber of packet buffers to allocate and store in the\n"
65 "\tFPA. By default, 1024 packet buffers are used unless\n"
66 "\tCONFIG_CAVIUM_OCTEON_NUM_PACKET_BUFFERS is defined.");
67
68 int pow_receive_group = 15;
69 module_param(pow_receive_group, int, 0444);
70 MODULE_PARM_DESC(pow_receive_group, "\n"
71 "\tPOW group to receive packets from. All ethernet hardware\n"
72 "\twill be configured to send incomming packets to this POW\n"
73 "\tgroup. Also any other software can submit packets to this\n"
74 "\tgroup for the kernel to process.");
75
76 int pow_send_group = -1;
77 module_param(pow_send_group, int, 0644);
78 MODULE_PARM_DESC(pow_send_group, "\n"
79 "\tPOW group to send packets to other software on. This\n"
80 "\tcontrols the creation of the virtual device pow0.\n"
81 "\talways_use_pow also depends on this value.");
82
83 int always_use_pow;
84 module_param(always_use_pow, int, 0444);
85 MODULE_PARM_DESC(always_use_pow, "\n"
86 "\tWhen set, always send to the pow group. This will cause\n"
87 "\tpackets sent to real ethernet devices to be sent to the\n"
88 "\tPOW group instead of the hardware. Unless some other\n"
89 "\tapplication changes the config, packets will still be\n"
90 "\treceived from the low level hardware. Use this option\n"
91 "\tto allow a CVMX app to intercept all packets from the\n"
92 "\tlinux kernel. You must specify pow_send_group along with\n"
93 "\tthis option.");
94
95 char pow_send_list[128] = "";
96 module_param_string(pow_send_list, pow_send_list, sizeof(pow_send_list), 0444);
97 MODULE_PARM_DESC(pow_send_list, "\n"
98 "\tComma separated list of ethernet devices that should use the\n"
99 "\tPOW for transmit instead of the actual ethernet hardware. This\n"
100 "\tis a per port version of always_use_pow. always_use_pow takes\n"
101 "\tprecedence over this list. For example, setting this to\n"
102 "\t\"eth2,spi3,spi7\" would cause these three devices to transmit\n"
103 "\tusing the pow_send_group.");
104
105 int max_rx_cpus = -1;
106 module_param(max_rx_cpus, int, 0444);
107 MODULE_PARM_DESC(max_rx_cpus, "\n"
108 "\t\tThe maximum number of CPUs to use for packet reception.\n"
109 "\t\tUse -1 to use all available CPUs.");
110
111 int rx_napi_weight = 32;
112 module_param(rx_napi_weight, int, 0444);
113 MODULE_PARM_DESC(rx_napi_weight, "The NAPI WEIGHT parameter.");
114
115 /*
116 * The offset from mac_addr_base that should be used for the next port
117 * that is configured. By convention, if any mgmt ports exist on the
118 * chip, they get the first mac addresses, The ports controlled by
119 * this driver are numbered sequencially following any mgmt addresses
120 * that may exist.
121 */
122 static unsigned int cvm_oct_mac_addr_offset;
123
124 /**
125 * cvm_oct_poll_queue - Workqueue for polling operations.
126 */
127 struct workqueue_struct *cvm_oct_poll_queue;
128
129 /**
130 * cvm_oct_poll_queue_stopping - flag to indicate polling should stop.
131 *
132 * Set to one right before cvm_oct_poll_queue is destroyed.
133 */
134 atomic_t cvm_oct_poll_queue_stopping = ATOMIC_INIT(0);
135
136 /**
137 * Array of every ethernet device owned by this driver indexed by
138 * the ipd input port number.
139 */
140 struct net_device *cvm_oct_device[TOTAL_NUMBER_OF_PORTS];
141
142 u64 cvm_oct_tx_poll_interval;
143
144 static void cvm_oct_rx_refill_worker(struct work_struct *work);
145 static DECLARE_DELAYED_WORK(cvm_oct_rx_refill_work, cvm_oct_rx_refill_worker);
146
147 static void cvm_oct_rx_refill_worker(struct work_struct *work)
148 {
149 /*
150 * FPA 0 may have been drained, try to refill it if we need
151 * more than num_packet_buffers / 2, otherwise normal receive
152 * processing will refill it. If it were drained, no packets
153 * could be received so cvm_oct_napi_poll would never be
154 * invoked to do the refill.
155 */
156 cvm_oct_rx_refill_pool(num_packet_buffers / 2);
157
158 if (!atomic_read(&cvm_oct_poll_queue_stopping))
159 queue_delayed_work(cvm_oct_poll_queue,
160 &cvm_oct_rx_refill_work, HZ);
161 }
162
163 static void cvm_oct_periodic_worker(struct work_struct *work)
164 {
165 struct octeon_ethernet *priv = container_of(work,
166 struct octeon_ethernet,
167 port_periodic_work.work);
168
169 if (priv->poll)
170 priv->poll(cvm_oct_device[priv->port]);
171
172 cvm_oct_device[priv->port]->netdev_ops->ndo_get_stats(cvm_oct_device[priv->port]);
173
174 if (!atomic_read(&cvm_oct_poll_queue_stopping))
175 queue_delayed_work(cvm_oct_poll_queue, &priv->port_periodic_work, HZ);
176 }
177
178 static __init void cvm_oct_configure_common_hw(void)
179 {
180 /* Setup the FPA */
181 cvmx_fpa_enable();
182 cvm_oct_mem_fill_fpa(CVMX_FPA_PACKET_POOL, CVMX_FPA_PACKET_POOL_SIZE,
183 num_packet_buffers);
184 cvm_oct_mem_fill_fpa(CVMX_FPA_WQE_POOL, CVMX_FPA_WQE_POOL_SIZE,
185 num_packet_buffers);
186 if (CVMX_FPA_OUTPUT_BUFFER_POOL != CVMX_FPA_PACKET_POOL)
187 cvm_oct_mem_fill_fpa(CVMX_FPA_OUTPUT_BUFFER_POOL,
188 CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE, 128);
189
190 if (USE_RED)
191 cvmx_helper_setup_red(num_packet_buffers / 4,
192 num_packet_buffers / 8);
193
194 }
195
196 /**
197 * cvm_oct_free_work- Free a work queue entry
198 *
199 * @work_queue_entry: Work queue entry to free
200 *
201 * Returns Zero on success, Negative on failure.
202 */
203 int cvm_oct_free_work(void *work_queue_entry)
204 {
205 cvmx_wqe_t *work = work_queue_entry;
206
207 int segments = work->word2.s.bufs;
208 union cvmx_buf_ptr segment_ptr = work->packet_ptr;
209
210 while (segments--) {
211 union cvmx_buf_ptr next_ptr = *(union cvmx_buf_ptr *)
212 cvmx_phys_to_ptr(segment_ptr.s.addr - 8);
213 if (unlikely(!segment_ptr.s.i))
214 cvmx_fpa_free(cvm_oct_get_buffer_ptr(segment_ptr),
215 segment_ptr.s.pool,
216 DONT_WRITEBACK(CVMX_FPA_PACKET_POOL_SIZE /
217 128));
218 segment_ptr = next_ptr;
219 }
220 cvmx_fpa_free(work, CVMX_FPA_WQE_POOL, DONT_WRITEBACK(1));
221
222 return 0;
223 }
224 EXPORT_SYMBOL(cvm_oct_free_work);
225
226 /**
227 * cvm_oct_common_get_stats - get the low level ethernet statistics
228 * @dev: Device to get the statistics from
229 *
230 * Returns Pointer to the statistics
231 */
232 static struct net_device_stats *cvm_oct_common_get_stats(struct net_device *dev)
233 {
234 cvmx_pip_port_status_t rx_status;
235 cvmx_pko_port_status_t tx_status;
236 struct octeon_ethernet *priv = netdev_priv(dev);
237
238 if (priv->port < CVMX_PIP_NUM_INPUT_PORTS) {
239 if (octeon_is_simulation()) {
240 /* The simulator doesn't support statistics */
241 memset(&rx_status, 0, sizeof(rx_status));
242 memset(&tx_status, 0, sizeof(tx_status));
243 } else {
244 cvmx_pip_get_port_status(priv->port, 1, &rx_status);
245 cvmx_pko_get_port_status(priv->port, 1, &tx_status);
246 }
247
248 priv->stats.rx_packets += rx_status.inb_packets;
249 priv->stats.tx_packets += tx_status.packets;
250 priv->stats.rx_bytes += rx_status.inb_octets;
251 priv->stats.tx_bytes += tx_status.octets;
252 priv->stats.multicast += rx_status.multicast_packets;
253 priv->stats.rx_crc_errors += rx_status.inb_errors;
254 priv->stats.rx_frame_errors += rx_status.fcs_align_err_packets;
255
256 /*
257 * The drop counter must be incremented atomically
258 * since the RX tasklet also increments it.
259 */
260 #ifdef CONFIG_64BIT
261 atomic64_add(rx_status.dropped_packets,
262 (atomic64_t *)&priv->stats.rx_dropped);
263 #else
264 atomic_add(rx_status.dropped_packets,
265 (atomic_t *)&priv->stats.rx_dropped);
266 #endif
267 }
268
269 return &priv->stats;
270 }
271
272 /**
273 * cvm_oct_common_change_mtu - change the link MTU
274 * @dev: Device to change
275 * @new_mtu: The new MTU
276 *
277 * Returns Zero on success
278 */
279 static int cvm_oct_common_change_mtu(struct net_device *dev, int new_mtu)
280 {
281 struct octeon_ethernet *priv = netdev_priv(dev);
282 int interface = INTERFACE(priv->port);
283 int index = INDEX(priv->port);
284 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
285 int vlan_bytes = 4;
286 #else
287 int vlan_bytes = 0;
288 #endif
289
290 /*
291 * Limit the MTU to make sure the ethernet packets are between
292 * 64 bytes and 65535 bytes.
293 */
294 if ((new_mtu + 14 + 4 + vlan_bytes < 64)
295 || (new_mtu + 14 + 4 + vlan_bytes > 65392)) {
296 pr_err("MTU must be between %d and %d.\n",
297 64 - 14 - 4 - vlan_bytes, 65392 - 14 - 4 - vlan_bytes);
298 return -EINVAL;
299 }
300 dev->mtu = new_mtu;
301
302 if ((interface < 2)
303 && (cvmx_helper_interface_get_mode(interface) !=
304 CVMX_HELPER_INTERFACE_MODE_SPI)) {
305 /* Add ethernet header and FCS, and VLAN if configured. */
306 int max_packet = new_mtu + 14 + 4 + vlan_bytes;
307
308 if (OCTEON_IS_MODEL(OCTEON_CN3XXX)
309 || OCTEON_IS_MODEL(OCTEON_CN58XX)) {
310 /* Signal errors on packets larger than the MTU */
311 cvmx_write_csr(CVMX_GMXX_RXX_FRM_MAX(index, interface),
312 max_packet);
313 } else {
314 /*
315 * Set the hardware to truncate packets larger
316 * than the MTU and smaller the 64 bytes.
317 */
318 union cvmx_pip_frm_len_chkx frm_len_chk;
319 frm_len_chk.u64 = 0;
320 frm_len_chk.s.minlen = 64;
321 frm_len_chk.s.maxlen = max_packet;
322 cvmx_write_csr(CVMX_PIP_FRM_LEN_CHKX(interface),
323 frm_len_chk.u64);
324 }
325 /*
326 * Set the hardware to truncate packets larger than
327 * the MTU. The jabber register must be set to a
328 * multiple of 8 bytes, so round up.
329 */
330 cvmx_write_csr(CVMX_GMXX_RXX_JABBER(index, interface),
331 (max_packet + 7) & ~7u);
332 }
333 return 0;
334 }
335
336 /**
337 * cvm_oct_common_set_multicast_list - set the multicast list
338 * @dev: Device to work on
339 */
340 static void cvm_oct_common_set_multicast_list(struct net_device *dev)
341 {
342 union cvmx_gmxx_prtx_cfg gmx_cfg;
343 struct octeon_ethernet *priv = netdev_priv(dev);
344 int interface = INTERFACE(priv->port);
345 int index = INDEX(priv->port);
346
347 if ((interface < 2)
348 && (cvmx_helper_interface_get_mode(interface) !=
349 CVMX_HELPER_INTERFACE_MODE_SPI)) {
350 union cvmx_gmxx_rxx_adr_ctl control;
351 control.u64 = 0;
352 control.s.bcst = 1; /* Allow broadcast MAC addresses */
353
354 if (!netdev_mc_empty(dev) || (dev->flags & IFF_ALLMULTI) ||
355 (dev->flags & IFF_PROMISC))
356 /* Force accept multicast packets */
357 control.s.mcst = 2;
358 else
359 /* Force reject multicat packets */
360 control.s.mcst = 1;
361
362 if (dev->flags & IFF_PROMISC)
363 /*
364 * Reject matches if promisc. Since CAM is
365 * shut off, should accept everything.
366 */
367 control.s.cam_mode = 0;
368 else
369 /* Filter packets based on the CAM */
370 control.s.cam_mode = 1;
371
372 gmx_cfg.u64 =
373 cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
374 cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface),
375 gmx_cfg.u64 & ~1ull);
376
377 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CTL(index, interface),
378 control.u64);
379 if (dev->flags & IFF_PROMISC)
380 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM_EN
381 (index, interface), 0);
382 else
383 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM_EN
384 (index, interface), 1);
385
386 cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface),
387 gmx_cfg.u64);
388 }
389 }
390
391 /**
392 * cvm_oct_common_set_mac_address - set the hardware MAC address for a device
393 * @dev: The device in question.
394 * @addr: Address structure to change it too.
395
396 * Returns Zero on success
397 */
398 static int cvm_oct_common_set_mac_address(struct net_device *dev, void *addr)
399 {
400 struct octeon_ethernet *priv = netdev_priv(dev);
401 union cvmx_gmxx_prtx_cfg gmx_cfg;
402 int interface = INTERFACE(priv->port);
403 int index = INDEX(priv->port);
404
405 memcpy(dev->dev_addr, addr + 2, 6);
406
407 if ((interface < 2)
408 && (cvmx_helper_interface_get_mode(interface) !=
409 CVMX_HELPER_INTERFACE_MODE_SPI)) {
410 int i;
411 uint8_t *ptr = addr;
412 uint64_t mac = 0;
413 for (i = 0; i < 6; i++)
414 mac = (mac << 8) | (uint64_t) (ptr[i + 2]);
415
416 gmx_cfg.u64 =
417 cvmx_read_csr(CVMX_GMXX_PRTX_CFG(index, interface));
418 cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface),
419 gmx_cfg.u64 & ~1ull);
420
421 cvmx_write_csr(CVMX_GMXX_SMACX(index, interface), mac);
422 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM0(index, interface),
423 ptr[2]);
424 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM1(index, interface),
425 ptr[3]);
426 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM2(index, interface),
427 ptr[4]);
428 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM3(index, interface),
429 ptr[5]);
430 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM4(index, interface),
431 ptr[6]);
432 cvmx_write_csr(CVMX_GMXX_RXX_ADR_CAM5(index, interface),
433 ptr[7]);
434 cvm_oct_common_set_multicast_list(dev);
435 cvmx_write_csr(CVMX_GMXX_PRTX_CFG(index, interface),
436 gmx_cfg.u64);
437 }
438 return 0;
439 }
440
441 /**
442 * cvm_oct_common_init - per network device initialization
443 * @dev: Device to initialize
444 *
445 * Returns Zero on success
446 */
447 int cvm_oct_common_init(struct net_device *dev)
448 {
449 struct octeon_ethernet *priv = netdev_priv(dev);
450 struct sockaddr sa;
451 u64 mac = ((u64)(octeon_bootinfo->mac_addr_base[0] & 0xff) << 40) |
452 ((u64)(octeon_bootinfo->mac_addr_base[1] & 0xff) << 32) |
453 ((u64)(octeon_bootinfo->mac_addr_base[2] & 0xff) << 24) |
454 ((u64)(octeon_bootinfo->mac_addr_base[3] & 0xff) << 16) |
455 ((u64)(octeon_bootinfo->mac_addr_base[4] & 0xff) << 8) |
456 (u64)(octeon_bootinfo->mac_addr_base[5] & 0xff);
457
458 mac += cvm_oct_mac_addr_offset;
459 sa.sa_data[0] = (mac >> 40) & 0xff;
460 sa.sa_data[1] = (mac >> 32) & 0xff;
461 sa.sa_data[2] = (mac >> 24) & 0xff;
462 sa.sa_data[3] = (mac >> 16) & 0xff;
463 sa.sa_data[4] = (mac >> 8) & 0xff;
464 sa.sa_data[5] = mac & 0xff;
465
466 if (cvm_oct_mac_addr_offset >= octeon_bootinfo->mac_addr_count)
467 printk(KERN_DEBUG "%s: Using MAC outside of the assigned range:"
468 " %02x:%02x:%02x:%02x:%02x:%02x\n", dev->name,
469 sa.sa_data[0] & 0xff, sa.sa_data[1] & 0xff,
470 sa.sa_data[2] & 0xff, sa.sa_data[3] & 0xff,
471 sa.sa_data[4] & 0xff, sa.sa_data[5] & 0xff);
472 cvm_oct_mac_addr_offset++;
473
474 /*
475 * Force the interface to use the POW send if always_use_pow
476 * was specified or it is in the pow send list.
477 */
478 if ((pow_send_group != -1)
479 && (always_use_pow || strstr(pow_send_list, dev->name)))
480 priv->queue = -1;
481
482 if (priv->queue != -1) {
483 dev->features |= NETIF_F_SG;
484 if (USE_HW_TCPUDP_CHECKSUM)
485 dev->features |= NETIF_F_IP_CSUM;
486 }
487
488 /* We do our own locking, Linux doesn't need to */
489 dev->features |= NETIF_F_LLTX;
490 SET_ETHTOOL_OPS(dev, &cvm_oct_ethtool_ops);
491
492 cvm_oct_phy_setup_device(dev);
493 dev->netdev_ops->ndo_set_mac_address(dev, &sa);
494 dev->netdev_ops->ndo_change_mtu(dev, dev->mtu);
495
496 /*
497 * Zero out stats for port so we won't mistakenly show
498 * counters from the bootloader.
499 */
500 memset(dev->netdev_ops->ndo_get_stats(dev), 0,
501 sizeof(struct net_device_stats));
502
503 return 0;
504 }
505
506 void cvm_oct_common_uninit(struct net_device *dev)
507 {
508 struct octeon_ethernet *priv = netdev_priv(dev);
509
510 if (priv->phydev)
511 phy_disconnect(priv->phydev);
512 }
513
514 static const struct net_device_ops cvm_oct_npi_netdev_ops = {
515 .ndo_init = cvm_oct_common_init,
516 .ndo_uninit = cvm_oct_common_uninit,
517 .ndo_start_xmit = cvm_oct_xmit,
518 .ndo_set_multicast_list = cvm_oct_common_set_multicast_list,
519 .ndo_set_mac_address = cvm_oct_common_set_mac_address,
520 .ndo_do_ioctl = cvm_oct_ioctl,
521 .ndo_change_mtu = cvm_oct_common_change_mtu,
522 .ndo_get_stats = cvm_oct_common_get_stats,
523 #ifdef CONFIG_NET_POLL_CONTROLLER
524 .ndo_poll_controller = cvm_oct_poll_controller,
525 #endif
526 };
527 static const struct net_device_ops cvm_oct_xaui_netdev_ops = {
528 .ndo_init = cvm_oct_xaui_init,
529 .ndo_uninit = cvm_oct_xaui_uninit,
530 .ndo_open = cvm_oct_xaui_open,
531 .ndo_stop = cvm_oct_xaui_stop,
532 .ndo_start_xmit = cvm_oct_xmit,
533 .ndo_set_multicast_list = cvm_oct_common_set_multicast_list,
534 .ndo_set_mac_address = cvm_oct_common_set_mac_address,
535 .ndo_do_ioctl = cvm_oct_ioctl,
536 .ndo_change_mtu = cvm_oct_common_change_mtu,
537 .ndo_get_stats = cvm_oct_common_get_stats,
538 #ifdef CONFIG_NET_POLL_CONTROLLER
539 .ndo_poll_controller = cvm_oct_poll_controller,
540 #endif
541 };
542 static const struct net_device_ops cvm_oct_sgmii_netdev_ops = {
543 .ndo_init = cvm_oct_sgmii_init,
544 .ndo_uninit = cvm_oct_sgmii_uninit,
545 .ndo_open = cvm_oct_sgmii_open,
546 .ndo_stop = cvm_oct_sgmii_stop,
547 .ndo_start_xmit = cvm_oct_xmit,
548 .ndo_set_multicast_list = cvm_oct_common_set_multicast_list,
549 .ndo_set_mac_address = cvm_oct_common_set_mac_address,
550 .ndo_do_ioctl = cvm_oct_ioctl,
551 .ndo_change_mtu = cvm_oct_common_change_mtu,
552 .ndo_get_stats = cvm_oct_common_get_stats,
553 #ifdef CONFIG_NET_POLL_CONTROLLER
554 .ndo_poll_controller = cvm_oct_poll_controller,
555 #endif
556 };
557 static const struct net_device_ops cvm_oct_spi_netdev_ops = {
558 .ndo_init = cvm_oct_spi_init,
559 .ndo_uninit = cvm_oct_spi_uninit,
560 .ndo_start_xmit = cvm_oct_xmit,
561 .ndo_set_multicast_list = 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,
568 #endif
569 };
570 static const struct net_device_ops cvm_oct_rgmii_netdev_ops = {
571 .ndo_init = cvm_oct_rgmii_init,
572 .ndo_uninit = cvm_oct_rgmii_uninit,
573 .ndo_open = cvm_oct_rgmii_open,
574 .ndo_stop = cvm_oct_rgmii_stop,
575 .ndo_start_xmit = cvm_oct_xmit,
576 .ndo_set_multicast_list = 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,
583 #endif
584 };
585 static const struct net_device_ops cvm_oct_pow_netdev_ops = {
586 .ndo_init = cvm_oct_common_init,
587 .ndo_start_xmit = cvm_oct_xmit_pow,
588 .ndo_set_multicast_list = cvm_oct_common_set_multicast_list,
589 .ndo_set_mac_address = cvm_oct_common_set_mac_address,
590 .ndo_do_ioctl = cvm_oct_ioctl,
591 .ndo_change_mtu = cvm_oct_common_change_mtu,
592 .ndo_get_stats = cvm_oct_common_get_stats,
593 #ifdef CONFIG_NET_POLL_CONTROLLER
594 .ndo_poll_controller = cvm_oct_poll_controller,
595 #endif
596 };
597
598 extern void octeon_mdiobus_force_mod_depencency(void);
599
600 static int __init cvm_oct_init_module(void)
601 {
602 int num_interfaces;
603 int interface;
604 int fau = FAU_NUM_PACKET_BUFFERS_TO_FREE;
605 int qos;
606
607 octeon_mdiobus_force_mod_depencency();
608 pr_notice("cavium-ethernet %s\n", OCTEON_ETHERNET_VERSION);
609
610 if (OCTEON_IS_MODEL(OCTEON_CN52XX))
611 cvm_oct_mac_addr_offset = 2; /* First two are the mgmt ports. */
612 else if (OCTEON_IS_MODEL(OCTEON_CN56XX))
613 cvm_oct_mac_addr_offset = 1; /* First one is the mgmt port. */
614 else
615 cvm_oct_mac_addr_offset = 0;
616
617 cvm_oct_poll_queue = create_singlethread_workqueue("octeon-ethernet");
618 if (cvm_oct_poll_queue == NULL) {
619 pr_err("octeon-ethernet: Cannot create workqueue");
620 return -ENOMEM;
621 }
622
623 cvm_oct_configure_common_hw();
624
625 cvmx_helper_initialize_packet_io_global();
626
627 /* Change the input group for all ports before input is enabled */
628 num_interfaces = cvmx_helper_get_number_of_interfaces();
629 for (interface = 0; interface < num_interfaces; interface++) {
630 int num_ports = cvmx_helper_ports_on_interface(interface);
631 int port;
632
633 for (port = cvmx_helper_get_ipd_port(interface, 0);
634 port < cvmx_helper_get_ipd_port(interface, num_ports);
635 port++) {
636 union cvmx_pip_prt_tagx pip_prt_tagx;
637 pip_prt_tagx.u64 =
638 cvmx_read_csr(CVMX_PIP_PRT_TAGX(port));
639 pip_prt_tagx.s.grp = pow_receive_group;
640 cvmx_write_csr(CVMX_PIP_PRT_TAGX(port),
641 pip_prt_tagx.u64);
642 }
643 }
644
645 cvmx_helper_ipd_and_packet_input_enable();
646
647 memset(cvm_oct_device, 0, sizeof(cvm_oct_device));
648
649 /*
650 * Initialize the FAU used for counting packet buffers that
651 * need to be freed.
652 */
653 cvmx_fau_atomic_write32(FAU_NUM_PACKET_BUFFERS_TO_FREE, 0);
654
655 /* Initialize the FAU used for counting tx SKBs that need to be freed */
656 cvmx_fau_atomic_write32(FAU_TOTAL_TX_TO_CLEAN, 0);
657
658 if ((pow_send_group != -1)) {
659 struct net_device *dev;
660 pr_info("\tConfiguring device for POW only access\n");
661 dev = alloc_etherdev(sizeof(struct octeon_ethernet));
662 if (dev) {
663 /* Initialize the device private structure. */
664 struct octeon_ethernet *priv = netdev_priv(dev);
665
666 dev->netdev_ops = &cvm_oct_pow_netdev_ops;
667 priv->imode = CVMX_HELPER_INTERFACE_MODE_DISABLED;
668 priv->port = CVMX_PIP_NUM_INPUT_PORTS;
669 priv->queue = -1;
670 strcpy(dev->name, "pow%d");
671 for (qos = 0; qos < 16; qos++)
672 skb_queue_head_init(&priv->tx_free_list[qos]);
673
674 if (register_netdev(dev) < 0) {
675 pr_err("Failed to register ethernet device for POW\n");
676 kfree(dev);
677 } else {
678 cvm_oct_device[CVMX_PIP_NUM_INPUT_PORTS] = dev;
679 pr_info("%s: POW send group %d, receive group %d\n",
680 dev->name, pow_send_group,
681 pow_receive_group);
682 }
683 } else {
684 pr_err("Failed to allocate ethernet device for POW\n");
685 }
686 }
687
688 num_interfaces = cvmx_helper_get_number_of_interfaces();
689 for (interface = 0; interface < num_interfaces; interface++) {
690 cvmx_helper_interface_mode_t imode =
691 cvmx_helper_interface_get_mode(interface);
692 int num_ports = cvmx_helper_ports_on_interface(interface);
693 int port;
694
695 for (port = cvmx_helper_get_ipd_port(interface, 0);
696 port < cvmx_helper_get_ipd_port(interface, num_ports);
697 port++) {
698 struct octeon_ethernet *priv;
699 struct net_device *dev =
700 alloc_etherdev(sizeof(struct octeon_ethernet));
701 if (!dev) {
702 pr_err("Failed to allocate ethernet device for port %d\n", port);
703 continue;
704 }
705
706 /* Initialize the device private structure. */
707 priv = netdev_priv(dev);
708
709 INIT_DELAYED_WORK(&priv->port_periodic_work,
710 cvm_oct_periodic_worker);
711 priv->imode = imode;
712 priv->port = port;
713 priv->queue = cvmx_pko_get_base_queue(priv->port);
714 priv->fau = fau - cvmx_pko_get_num_queues(port) * 4;
715 for (qos = 0; qos < 16; qos++)
716 skb_queue_head_init(&priv->tx_free_list[qos]);
717 for (qos = 0; qos < cvmx_pko_get_num_queues(port);
718 qos++)
719 cvmx_fau_atomic_write32(priv->fau + qos * 4, 0);
720
721 switch (priv->imode) {
722
723 /* These types don't support ports to IPD/PKO */
724 case CVMX_HELPER_INTERFACE_MODE_DISABLED:
725 case CVMX_HELPER_INTERFACE_MODE_PCIE:
726 case CVMX_HELPER_INTERFACE_MODE_PICMG:
727 break;
728
729 case CVMX_HELPER_INTERFACE_MODE_NPI:
730 dev->netdev_ops = &cvm_oct_npi_netdev_ops;
731 strcpy(dev->name, "npi%d");
732 break;
733
734 case CVMX_HELPER_INTERFACE_MODE_XAUI:
735 dev->netdev_ops = &cvm_oct_xaui_netdev_ops;
736 strcpy(dev->name, "xaui%d");
737 break;
738
739 case CVMX_HELPER_INTERFACE_MODE_LOOP:
740 dev->netdev_ops = &cvm_oct_npi_netdev_ops;
741 strcpy(dev->name, "loop%d");
742 break;
743
744 case CVMX_HELPER_INTERFACE_MODE_SGMII:
745 dev->netdev_ops = &cvm_oct_sgmii_netdev_ops;
746 strcpy(dev->name, "eth%d");
747 break;
748
749 case CVMX_HELPER_INTERFACE_MODE_SPI:
750 dev->netdev_ops = &cvm_oct_spi_netdev_ops;
751 strcpy(dev->name, "spi%d");
752 break;
753
754 case CVMX_HELPER_INTERFACE_MODE_RGMII:
755 case CVMX_HELPER_INTERFACE_MODE_GMII:
756 dev->netdev_ops = &cvm_oct_rgmii_netdev_ops;
757 strcpy(dev->name, "eth%d");
758 break;
759 }
760
761 if (!dev->netdev_ops) {
762 kfree(dev);
763 } else if (register_netdev(dev) < 0) {
764 pr_err("Failed to register ethernet device "
765 "for interface %d, port %d\n",
766 interface, priv->port);
767 kfree(dev);
768 } else {
769 cvm_oct_device[priv->port] = dev;
770 fau -=
771 cvmx_pko_get_num_queues(priv->port) *
772 sizeof(uint32_t);
773 queue_delayed_work(cvm_oct_poll_queue,
774 &priv->port_periodic_work, HZ);
775 }
776 }
777 }
778
779 cvm_oct_tx_initialize();
780 cvm_oct_rx_initialize();
781
782 /*
783 * 150 uS: about 10 1500-byte packtes at 1GE.
784 */
785 cvm_oct_tx_poll_interval = 150 * (octeon_get_clock_rate() / 1000000);
786
787 queue_delayed_work(cvm_oct_poll_queue, &cvm_oct_rx_refill_work, HZ);
788
789 return 0;
790 }
791
792 static void __exit cvm_oct_cleanup_module(void)
793 {
794 int port;
795
796 /* Disable POW interrupt */
797 cvmx_write_csr(CVMX_POW_WQ_INT_THRX(pow_receive_group), 0);
798
799 cvmx_ipd_disable();
800
801 /* Free the interrupt handler */
802 free_irq(OCTEON_IRQ_WORKQ0 + pow_receive_group, cvm_oct_device);
803
804 atomic_inc_return(&cvm_oct_poll_queue_stopping);
805 cancel_delayed_work_sync(&cvm_oct_rx_refill_work);
806
807 cvm_oct_rx_shutdown();
808 cvm_oct_tx_shutdown();
809
810 cvmx_pko_disable();
811
812 /* Free the ethernet devices */
813 for (port = 0; port < TOTAL_NUMBER_OF_PORTS; port++) {
814 if (cvm_oct_device[port]) {
815 struct net_device *dev = cvm_oct_device[port];
816 struct octeon_ethernet *priv = netdev_priv(dev);
817 cancel_delayed_work_sync(&priv->port_periodic_work);
818
819 cvm_oct_tx_shutdown_dev(dev);
820 unregister_netdev(dev);
821 kfree(dev);
822 cvm_oct_device[port] = NULL;
823 }
824 }
825
826 destroy_workqueue(cvm_oct_poll_queue);
827
828 cvmx_pko_shutdown();
829
830 cvmx_ipd_free_ptr();
831
832 /* Free the HW pools */
833 cvm_oct_mem_empty_fpa(CVMX_FPA_PACKET_POOL, CVMX_FPA_PACKET_POOL_SIZE,
834 num_packet_buffers);
835 cvm_oct_mem_empty_fpa(CVMX_FPA_WQE_POOL, CVMX_FPA_WQE_POOL_SIZE,
836 num_packet_buffers);
837 if (CVMX_FPA_OUTPUT_BUFFER_POOL != CVMX_FPA_PACKET_POOL)
838 cvm_oct_mem_empty_fpa(CVMX_FPA_OUTPUT_BUFFER_POOL,
839 CVMX_FPA_OUTPUT_BUFFER_POOL_SIZE, 128);
840 }
841
842 MODULE_LICENSE("GPL");
843 MODULE_AUTHOR("Cavium Networks <support@caviumnetworks.com>");
844 MODULE_DESCRIPTION("Cavium Networks Octeon ethernet driver.");
845 module_init(cvm_oct_init_module);
846 module_exit(cvm_oct_cleanup_module);
Tomato firmware and modifications.