igbvf: fix issue w/ mapped_as_page being left set after unmap
[linux-2.6.git] / drivers / net / igbvf / ethtool.c
1 /*******************************************************************************
2
3   Intel(R) 82576 Virtual Function Linux driver
4   Copyright(c) 2009 Intel Corporation.
5
6   This program is free software; you can redistribute it and/or modify it
7   under the terms and conditions of the GNU General Public License,
8   version 2, as published by the Free Software Foundation.
9
10   This program is distributed in the hope it will be useful, but WITHOUT
11   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
13   more details.
14
15   You should have received a copy of the GNU General Public License along with
16   this program; if not, write to the Free Software Foundation, Inc.,
17   51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
18
19   The full GNU General Public License is included in this distribution in
20   the file called "COPYING".
21
22   Contact Information:
23   e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
24   Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25
26 *******************************************************************************/
27
28 /* ethtool support for igbvf */
29
30 #include <linux/netdevice.h>
31 #include <linux/ethtool.h>
32 #include <linux/pci.h>
33 #include <linux/vmalloc.h>
34 #include <linux/delay.h>
35
36 #include "igbvf.h"
37 #include <linux/if_vlan.h>
38
39
40 struct igbvf_stats {
41         char stat_string[ETH_GSTRING_LEN];
42         int sizeof_stat;
43         int stat_offset;
44         int base_stat_offset;
45 };
46
47 #define IGBVF_STAT(current, base) \
48                 sizeof(((struct igbvf_adapter *)0)->current), \
49                 offsetof(struct igbvf_adapter, current), \
50                 offsetof(struct igbvf_adapter, base)
51
52 static const struct igbvf_stats igbvf_gstrings_stats[] = {
53         { "rx_packets", IGBVF_STAT(stats.gprc, stats.base_gprc) },
54         { "tx_packets", IGBVF_STAT(stats.gptc, stats.base_gptc) },
55         { "rx_bytes", IGBVF_STAT(stats.gorc, stats.base_gorc) },
56         { "tx_bytes", IGBVF_STAT(stats.gotc, stats.base_gotc) },
57         { "multicast", IGBVF_STAT(stats.mprc, stats.base_mprc) },
58         { "lbrx_bytes", IGBVF_STAT(stats.gorlbc, stats.base_gorlbc) },
59         { "lbrx_packets", IGBVF_STAT(stats.gprlbc, stats.base_gprlbc) },
60         { "tx_restart_queue", IGBVF_STAT(restart_queue, zero_base) },
61         { "rx_long_byte_count", IGBVF_STAT(stats.gorc, stats.base_gorc) },
62         { "rx_csum_offload_good", IGBVF_STAT(hw_csum_good, zero_base) },
63         { "rx_csum_offload_errors", IGBVF_STAT(hw_csum_err, zero_base) },
64         { "rx_header_split", IGBVF_STAT(rx_hdr_split, zero_base) },
65         { "alloc_rx_buff_failed", IGBVF_STAT(alloc_rx_buff_failed, zero_base) },
66 };
67
68 #define IGBVF_GLOBAL_STATS_LEN ARRAY_SIZE(igbvf_gstrings_stats)
69
70 static const char igbvf_gstrings_test[][ETH_GSTRING_LEN] = {
71         "Link test   (on/offline)"
72 };
73
74 #define IGBVF_TEST_LEN ARRAY_SIZE(igbvf_gstrings_test)
75
76 static int igbvf_get_settings(struct net_device *netdev,
77                               struct ethtool_cmd *ecmd)
78 {
79         struct igbvf_adapter *adapter = netdev_priv(netdev);
80         struct e1000_hw *hw = &adapter->hw;
81         u32 status;
82
83         ecmd->supported   = SUPPORTED_1000baseT_Full;
84
85         ecmd->advertising = ADVERTISED_1000baseT_Full;
86
87         ecmd->port = -1;
88         ecmd->transceiver = XCVR_DUMMY1;
89
90         status = er32(STATUS);
91         if (status & E1000_STATUS_LU) {
92                 if (status & E1000_STATUS_SPEED_1000)
93                         ecmd->speed = 1000;
94                 else if (status & E1000_STATUS_SPEED_100)
95                         ecmd->speed = 100;
96                 else
97                         ecmd->speed = 10;
98
99                 if (status & E1000_STATUS_FD)
100                         ecmd->duplex = DUPLEX_FULL;
101                 else
102                         ecmd->duplex = DUPLEX_HALF;
103         } else {
104                 ecmd->speed = -1;
105                 ecmd->duplex = -1;
106         }
107
108         ecmd->autoneg = AUTONEG_DISABLE;
109
110         return 0;
111 }
112
113 static u32 igbvf_get_link(struct net_device *netdev)
114 {
115         return netif_carrier_ok(netdev);
116 }
117
118 static int igbvf_set_settings(struct net_device *netdev,
119                               struct ethtool_cmd *ecmd)
120 {
121         return -EOPNOTSUPP;
122 }
123
124 static void igbvf_get_pauseparam(struct net_device *netdev,
125                                  struct ethtool_pauseparam *pause)
126 {
127         return;
128 }
129
130 static int igbvf_set_pauseparam(struct net_device *netdev,
131                                 struct ethtool_pauseparam *pause)
132 {
133         return -EOPNOTSUPP;
134 }
135
136 static u32 igbvf_get_rx_csum(struct net_device *netdev)
137 {
138         struct igbvf_adapter *adapter = netdev_priv(netdev);
139         return !(adapter->flags & IGBVF_FLAG_RX_CSUM_DISABLED);
140 }
141
142 static int igbvf_set_rx_csum(struct net_device *netdev, u32 data)
143 {
144         struct igbvf_adapter *adapter = netdev_priv(netdev);
145
146         if (data)
147                 adapter->flags &= ~IGBVF_FLAG_RX_CSUM_DISABLED;
148         else
149                 adapter->flags |= IGBVF_FLAG_RX_CSUM_DISABLED;
150
151         return 0;
152 }
153
154 static u32 igbvf_get_tx_csum(struct net_device *netdev)
155 {
156         return ((netdev->features & NETIF_F_IP_CSUM) != 0);
157 }
158
159 static int igbvf_set_tx_csum(struct net_device *netdev, u32 data)
160 {
161         if (data)
162                 netdev->features |= (NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
163         else
164                 netdev->features &= ~(NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM);
165         return 0;
166 }
167
168 static int igbvf_set_tso(struct net_device *netdev, u32 data)
169 {
170         struct igbvf_adapter *adapter = netdev_priv(netdev);
171
172         if (data) {
173                 netdev->features |= NETIF_F_TSO;
174                 netdev->features |= NETIF_F_TSO6;
175         } else {
176                 netdev->features &= ~NETIF_F_TSO;
177                 netdev->features &= ~NETIF_F_TSO6;
178         }
179
180         dev_info(&adapter->pdev->dev, "TSO is %s\n",
181                  data ? "Enabled" : "Disabled");
182         return 0;
183 }
184
185 static u32 igbvf_get_msglevel(struct net_device *netdev)
186 {
187         struct igbvf_adapter *adapter = netdev_priv(netdev);
188         return adapter->msg_enable;
189 }
190
191 static void igbvf_set_msglevel(struct net_device *netdev, u32 data)
192 {
193         struct igbvf_adapter *adapter = netdev_priv(netdev);
194         adapter->msg_enable = data;
195 }
196
197 static int igbvf_get_regs_len(struct net_device *netdev)
198 {
199 #define IGBVF_REGS_LEN 8
200         return IGBVF_REGS_LEN * sizeof(u32);
201 }
202
203 static void igbvf_get_regs(struct net_device *netdev,
204                            struct ethtool_regs *regs, void *p)
205 {
206         struct igbvf_adapter *adapter = netdev_priv(netdev);
207         struct e1000_hw *hw = &adapter->hw;
208         u32 *regs_buff = p;
209         u8 revision_id;
210
211         memset(p, 0, IGBVF_REGS_LEN * sizeof(u32));
212
213         pci_read_config_byte(adapter->pdev, PCI_REVISION_ID, &revision_id);
214
215         regs->version = (1 << 24) | (revision_id << 16) | adapter->pdev->device;
216
217         regs_buff[0] = er32(CTRL);
218         regs_buff[1] = er32(STATUS);
219
220         regs_buff[2] = er32(RDLEN(0));
221         regs_buff[3] = er32(RDH(0));
222         regs_buff[4] = er32(RDT(0));
223
224         regs_buff[5] = er32(TDLEN(0));
225         regs_buff[6] = er32(TDH(0));
226         regs_buff[7] = er32(TDT(0));
227 }
228
229 static int igbvf_get_eeprom_len(struct net_device *netdev)
230 {
231         return 0;
232 }
233
234 static int igbvf_get_eeprom(struct net_device *netdev,
235                             struct ethtool_eeprom *eeprom, u8 *bytes)
236 {
237         return -EOPNOTSUPP;
238 }
239
240 static int igbvf_set_eeprom(struct net_device *netdev,
241                             struct ethtool_eeprom *eeprom, u8 *bytes)
242 {
243         return -EOPNOTSUPP;
244 }
245
246 static void igbvf_get_drvinfo(struct net_device *netdev,
247                               struct ethtool_drvinfo *drvinfo)
248 {
249         struct igbvf_adapter *adapter = netdev_priv(netdev);
250         char firmware_version[32] = "N/A";
251
252         strncpy(drvinfo->driver,  igbvf_driver_name, 32);
253         strncpy(drvinfo->version, igbvf_driver_version, 32);
254         strncpy(drvinfo->fw_version, firmware_version, 32);
255         strncpy(drvinfo->bus_info, pci_name(adapter->pdev), 32);
256         drvinfo->regdump_len = igbvf_get_regs_len(netdev);
257         drvinfo->eedump_len = igbvf_get_eeprom_len(netdev);
258 }
259
260 static void igbvf_get_ringparam(struct net_device *netdev,
261                                 struct ethtool_ringparam *ring)
262 {
263         struct igbvf_adapter *adapter = netdev_priv(netdev);
264         struct igbvf_ring *tx_ring = adapter->tx_ring;
265         struct igbvf_ring *rx_ring = adapter->rx_ring;
266
267         ring->rx_max_pending = IGBVF_MAX_RXD;
268         ring->tx_max_pending = IGBVF_MAX_TXD;
269         ring->rx_mini_max_pending = 0;
270         ring->rx_jumbo_max_pending = 0;
271         ring->rx_pending = rx_ring->count;
272         ring->tx_pending = tx_ring->count;
273         ring->rx_mini_pending = 0;
274         ring->rx_jumbo_pending = 0;
275 }
276
277 static int igbvf_set_ringparam(struct net_device *netdev,
278                                struct ethtool_ringparam *ring)
279 {
280         struct igbvf_adapter *adapter = netdev_priv(netdev);
281         struct igbvf_ring *temp_ring;
282         int err = 0;
283         u32 new_rx_count, new_tx_count;
284
285         if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
286                 return -EINVAL;
287
288         new_rx_count = max(ring->rx_pending, (u32)IGBVF_MIN_RXD);
289         new_rx_count = min(new_rx_count, (u32)IGBVF_MAX_RXD);
290         new_rx_count = ALIGN(new_rx_count, REQ_RX_DESCRIPTOR_MULTIPLE);
291
292         new_tx_count = max(ring->tx_pending, (u32)IGBVF_MIN_TXD);
293         new_tx_count = min(new_tx_count, (u32)IGBVF_MAX_TXD);
294         new_tx_count = ALIGN(new_tx_count, REQ_TX_DESCRIPTOR_MULTIPLE);
295
296         if ((new_tx_count == adapter->tx_ring->count) &&
297             (new_rx_count == adapter->rx_ring->count)) {
298                 /* nothing to do */
299                 return 0;
300         }
301
302         while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state))
303                 msleep(1);
304
305         if (!netif_running(adapter->netdev)) {
306                 adapter->tx_ring->count = new_tx_count;
307                 adapter->rx_ring->count = new_rx_count;
308                 goto clear_reset;
309         }
310
311         temp_ring = vmalloc(sizeof(struct igbvf_ring));
312         if (!temp_ring) {
313                 err = -ENOMEM;
314                 goto clear_reset;
315         }
316
317         igbvf_down(adapter);
318
319         /*
320          * We can't just free everything and then setup again,
321          * because the ISRs in MSI-X mode get passed pointers
322          * to the tx and rx ring structs.
323          */
324         if (new_tx_count != adapter->tx_ring->count) {
325                 memcpy(temp_ring, adapter->tx_ring, sizeof(struct igbvf_ring));
326
327                 temp_ring->count = new_tx_count;
328                 err = igbvf_setup_tx_resources(adapter, temp_ring);
329                 if (err)
330                         goto err_setup;
331
332                 igbvf_free_tx_resources(adapter->tx_ring);
333
334                 memcpy(adapter->tx_ring, temp_ring, sizeof(struct igbvf_ring));
335         }
336
337         if (new_rx_count != adapter->rx_ring->count) {
338                 memcpy(temp_ring, adapter->rx_ring, sizeof(struct igbvf_ring));
339
340                 temp_ring->count = new_rx_count;
341                 err = igbvf_setup_rx_resources(adapter, temp_ring);
342                 if (err)
343                         goto err_setup;
344
345                 igbvf_free_rx_resources(adapter->rx_ring);
346
347                 memcpy(adapter->rx_ring, temp_ring,sizeof(struct igbvf_ring));
348         }
349 err_setup:
350         igbvf_up(adapter);
351         vfree(temp_ring);
352 clear_reset:
353         clear_bit(__IGBVF_RESETTING, &adapter->state);
354         return err;
355 }
356
357 static int igbvf_link_test(struct igbvf_adapter *adapter, u64 *data)
358 {
359         struct e1000_hw *hw = &adapter->hw;
360         *data = 0;
361
362         hw->mac.ops.check_for_link(hw);
363
364         if (!(er32(STATUS) & E1000_STATUS_LU))
365                 *data = 1;
366
367         return *data;
368 }
369
370 static void igbvf_diag_test(struct net_device *netdev,
371                             struct ethtool_test *eth_test, u64 *data)
372 {
373         struct igbvf_adapter *adapter = netdev_priv(netdev);
374
375         set_bit(__IGBVF_TESTING, &adapter->state);
376
377         /*
378          * Link test performed before hardware reset so autoneg doesn't
379          * interfere with test result
380          */
381         if (igbvf_link_test(adapter, &data[0]))
382                 eth_test->flags |= ETH_TEST_FL_FAILED;
383
384         clear_bit(__IGBVF_TESTING, &adapter->state);
385         msleep_interruptible(4 * 1000);
386 }
387
388 static void igbvf_get_wol(struct net_device *netdev,
389                           struct ethtool_wolinfo *wol)
390 {
391         wol->supported = 0;
392         wol->wolopts = 0;
393
394         return;
395 }
396
397 static int igbvf_set_wol(struct net_device *netdev,
398                          struct ethtool_wolinfo *wol)
399 {
400         return -EOPNOTSUPP;
401 }
402
403 static int igbvf_phys_id(struct net_device *netdev, u32 data)
404 {
405         return 0;
406 }
407
408 static int igbvf_get_coalesce(struct net_device *netdev,
409                               struct ethtool_coalesce *ec)
410 {
411         struct igbvf_adapter *adapter = netdev_priv(netdev);
412
413         if (adapter->itr_setting <= 3)
414                 ec->rx_coalesce_usecs = adapter->itr_setting;
415         else
416                 ec->rx_coalesce_usecs = adapter->itr_setting >> 2;
417
418         return 0;
419 }
420
421 static int igbvf_set_coalesce(struct net_device *netdev,
422                               struct ethtool_coalesce *ec)
423 {
424         struct igbvf_adapter *adapter = netdev_priv(netdev);
425         struct e1000_hw *hw = &adapter->hw;
426
427         if ((ec->rx_coalesce_usecs > IGBVF_MAX_ITR_USECS) ||
428             ((ec->rx_coalesce_usecs > 3) &&
429              (ec->rx_coalesce_usecs < IGBVF_MIN_ITR_USECS)) ||
430             (ec->rx_coalesce_usecs == 2))
431                 return -EINVAL;
432
433         /* convert to rate of irq's per second */
434         if (ec->rx_coalesce_usecs && ec->rx_coalesce_usecs <= 3) {
435                 adapter->itr = IGBVF_START_ITR;
436                 adapter->itr_setting = ec->rx_coalesce_usecs;
437         } else {
438                 adapter->itr = ec->rx_coalesce_usecs << 2;
439                 adapter->itr_setting = adapter->itr;
440         }
441
442         writel(adapter->itr,
443                hw->hw_addr + adapter->rx_ring[0].itr_register);
444
445         return 0;
446 }
447
448 static int igbvf_nway_reset(struct net_device *netdev)
449 {
450         struct igbvf_adapter *adapter = netdev_priv(netdev);
451         if (netif_running(netdev))
452                 igbvf_reinit_locked(adapter);
453         return 0;
454 }
455
456
457 static void igbvf_get_ethtool_stats(struct net_device *netdev,
458                                     struct ethtool_stats *stats,
459                                     u64 *data)
460 {
461         struct igbvf_adapter *adapter = netdev_priv(netdev);
462         int i;
463
464         igbvf_update_stats(adapter);
465         for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) {
466                 char *p = (char *)adapter +
467                           igbvf_gstrings_stats[i].stat_offset;
468                 char *b = (char *)adapter +
469                           igbvf_gstrings_stats[i].base_stat_offset;
470                 data[i] = ((igbvf_gstrings_stats[i].sizeof_stat ==
471                             sizeof(u64)) ? (*(u64 *)p - *(u64 *)b) :
472                             (*(u32 *)p - *(u32 *)b));
473         }
474
475 }
476
477 static int igbvf_get_sset_count(struct net_device *dev, int stringset)
478 {
479         switch(stringset) {
480         case ETH_SS_TEST:
481                 return IGBVF_TEST_LEN;
482         case ETH_SS_STATS:
483                 return IGBVF_GLOBAL_STATS_LEN;
484         default:
485                 return -EINVAL;
486         }
487 }
488
489 static void igbvf_get_strings(struct net_device *netdev, u32 stringset,
490                               u8 *data)
491 {
492         u8 *p = data;
493         int i;
494
495         switch (stringset) {
496         case ETH_SS_TEST:
497                 memcpy(data, *igbvf_gstrings_test, sizeof(igbvf_gstrings_test));
498                 break;
499         case ETH_SS_STATS:
500                 for (i = 0; i < IGBVF_GLOBAL_STATS_LEN; i++) {
501                         memcpy(p, igbvf_gstrings_stats[i].stat_string,
502                                ETH_GSTRING_LEN);
503                         p += ETH_GSTRING_LEN;
504                 }
505                 break;
506         }
507 }
508
509 static const struct ethtool_ops igbvf_ethtool_ops = {
510         .get_settings           = igbvf_get_settings,
511         .set_settings           = igbvf_set_settings,
512         .get_drvinfo            = igbvf_get_drvinfo,
513         .get_regs_len           = igbvf_get_regs_len,
514         .get_regs               = igbvf_get_regs,
515         .get_wol                = igbvf_get_wol,
516         .set_wol                = igbvf_set_wol,
517         .get_msglevel           = igbvf_get_msglevel,
518         .set_msglevel           = igbvf_set_msglevel,
519         .nway_reset             = igbvf_nway_reset,
520         .get_link               = igbvf_get_link,
521         .get_eeprom_len         = igbvf_get_eeprom_len,
522         .get_eeprom             = igbvf_get_eeprom,
523         .set_eeprom             = igbvf_set_eeprom,
524         .get_ringparam          = igbvf_get_ringparam,
525         .set_ringparam          = igbvf_set_ringparam,
526         .get_pauseparam         = igbvf_get_pauseparam,
527         .set_pauseparam         = igbvf_set_pauseparam,
528         .get_rx_csum            = igbvf_get_rx_csum,
529         .set_rx_csum            = igbvf_set_rx_csum,
530         .get_tx_csum            = igbvf_get_tx_csum,
531         .set_tx_csum            = igbvf_set_tx_csum,
532         .get_sg                 = ethtool_op_get_sg,
533         .set_sg                 = ethtool_op_set_sg,
534         .get_tso                = ethtool_op_get_tso,
535         .set_tso                = igbvf_set_tso,
536         .self_test              = igbvf_diag_test,
537         .get_sset_count         = igbvf_get_sset_count,
538         .get_strings            = igbvf_get_strings,
539         .phys_id                = igbvf_phys_id,
540         .get_ethtool_stats      = igbvf_get_ethtool_stats,
541         .get_coalesce           = igbvf_get_coalesce,
542         .set_coalesce           = igbvf_set_coalesce,
543 };
544
545 void igbvf_set_ethtool_ops(struct net_device *netdev)
546 {
547         /* have to "undeclare" const on this struct to remove warnings */
548         SET_ETHTOOL_OPS(netdev, (struct ethtool_ops *)&igbvf_ethtool_ops);
549 }