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1da177e4 LT |
1 | /* |
2 | * drivers/net/gianfar_ethtool.c | |
3 | * | |
4 | * Gianfar Ethernet Driver | |
5 | * Ethtool support for Gianfar Enet | |
6 | * Based on e1000 ethtool support | |
7 | * | |
8 | * Author: Andy Fleming | |
4c8d3d99 | 9 | * Maintainer: Kumar Gala |
a12f801d | 10 | * Modifier: Sandeep Gopalpet <sandeep.kumar@freescale.com> |
1da177e4 | 11 | * |
6c43e046 | 12 | * Copyright 2003-2006, 2008-2009, 2011 Freescale Semiconductor, Inc. |
1da177e4 | 13 | * |
6aa20a22 JG |
14 | * This software may be used and distributed according to |
15 | * the terms of the GNU Public License, Version 2, incorporated herein | |
1da177e4 LT |
16 | * by reference. |
17 | */ | |
18 | ||
59deab26 JP |
19 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
20 | ||
1da177e4 | 21 | #include <linux/kernel.h> |
1da177e4 LT |
22 | #include <linux/string.h> |
23 | #include <linux/errno.h> | |
1da177e4 LT |
24 | #include <linux/interrupt.h> |
25 | #include <linux/init.h> | |
26 | #include <linux/delay.h> | |
27 | #include <linux/netdevice.h> | |
28 | #include <linux/etherdevice.h> | |
29 | #include <linux/skbuff.h> | |
30 | #include <linux/spinlock.h> | |
31 | #include <linux/mm.h> | |
32 | ||
33 | #include <asm/io.h> | |
34 | #include <asm/irq.h> | |
35 | #include <asm/uaccess.h> | |
36 | #include <linux/module.h> | |
1da177e4 LT |
37 | #include <linux/crc32.h> |
38 | #include <asm/types.h> | |
1da177e4 | 39 | #include <linux/ethtool.h> |
bb40dcbb AF |
40 | #include <linux/mii.h> |
41 | #include <linux/phy.h> | |
4aa3a715 | 42 | #include <linux/sort.h> |
380b153c | 43 | #include <linux/if_vlan.h> |
1da177e4 LT |
44 | |
45 | #include "gianfar.h" | |
46 | ||
0bbaf069 | 47 | extern void gfar_start(struct net_device *dev); |
a12f801d | 48 | extern int gfar_clean_rx_ring(struct gfar_priv_rx_q *rx_queue, int rx_work_limit); |
1da177e4 | 49 | |
bb40dcbb AF |
50 | #define GFAR_MAX_COAL_USECS 0xffff |
51 | #define GFAR_MAX_COAL_FRAMES 0xff | |
0bbaf069 | 52 | static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy, |
1da177e4 | 53 | u64 * buf); |
0bbaf069 KG |
54 | static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf); |
55 | static int gfar_gcoalesce(struct net_device *dev, struct ethtool_coalesce *cvals); | |
56 | static int gfar_scoalesce(struct net_device *dev, struct ethtool_coalesce *cvals); | |
57 | static void gfar_gringparam(struct net_device *dev, struct ethtool_ringparam *rvals); | |
58 | static int gfar_sringparam(struct net_device *dev, struct ethtool_ringparam *rvals); | |
59 | static void gfar_gdrvinfo(struct net_device *dev, struct ethtool_drvinfo *drvinfo); | |
1da177e4 LT |
60 | |
61 | static char stat_gstrings[][ETH_GSTRING_LEN] = { | |
62 | "rx-dropped-by-kernel", | |
63 | "rx-large-frame-errors", | |
64 | "rx-short-frame-errors", | |
65 | "rx-non-octet-errors", | |
66 | "rx-crc-errors", | |
67 | "rx-overrun-errors", | |
68 | "rx-busy-errors", | |
69 | "rx-babbling-errors", | |
70 | "rx-truncated-frames", | |
71 | "ethernet-bus-error", | |
72 | "tx-babbling-errors", | |
73 | "tx-underrun-errors", | |
74 | "rx-skb-missing-errors", | |
75 | "tx-timeout-errors", | |
76 | "tx-rx-64-frames", | |
77 | "tx-rx-65-127-frames", | |
78 | "tx-rx-128-255-frames", | |
79 | "tx-rx-256-511-frames", | |
80 | "tx-rx-512-1023-frames", | |
81 | "tx-rx-1024-1518-frames", | |
82 | "tx-rx-1519-1522-good-vlan", | |
83 | "rx-bytes", | |
84 | "rx-packets", | |
85 | "rx-fcs-errors", | |
86 | "receive-multicast-packet", | |
87 | "receive-broadcast-packet", | |
88 | "rx-control-frame-packets", | |
89 | "rx-pause-frame-packets", | |
90 | "rx-unknown-op-code", | |
91 | "rx-alignment-error", | |
92 | "rx-frame-length-error", | |
93 | "rx-code-error", | |
94 | "rx-carrier-sense-error", | |
95 | "rx-undersize-packets", | |
96 | "rx-oversize-packets", | |
97 | "rx-fragmented-frames", | |
98 | "rx-jabber-frames", | |
99 | "rx-dropped-frames", | |
100 | "tx-byte-counter", | |
101 | "tx-packets", | |
102 | "tx-multicast-packets", | |
103 | "tx-broadcast-packets", | |
104 | "tx-pause-control-frames", | |
105 | "tx-deferral-packets", | |
106 | "tx-excessive-deferral-packets", | |
107 | "tx-single-collision-packets", | |
108 | "tx-multiple-collision-packets", | |
109 | "tx-late-collision-packets", | |
110 | "tx-excessive-collision-packets", | |
111 | "tx-total-collision", | |
112 | "reserved", | |
113 | "tx-dropped-frames", | |
114 | "tx-jabber-frames", | |
115 | "tx-fcs-errors", | |
116 | "tx-control-frames", | |
117 | "tx-oversize-frames", | |
118 | "tx-undersize-frames", | |
119 | "tx-fragmented-frames", | |
120 | }; | |
121 | ||
0bbaf069 KG |
122 | /* Fill in a buffer with the strings which correspond to the |
123 | * stats */ | |
124 | static void gfar_gstrings(struct net_device *dev, u32 stringset, u8 * buf) | |
125 | { | |
126 | struct gfar_private *priv = netdev_priv(dev); | |
7f7f5316 | 127 | |
b31a1d8b | 128 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) |
0bbaf069 KG |
129 | memcpy(buf, stat_gstrings, GFAR_STATS_LEN * ETH_GSTRING_LEN); |
130 | else | |
131 | memcpy(buf, stat_gstrings, | |
132 | GFAR_EXTRA_STATS_LEN * ETH_GSTRING_LEN); | |
133 | } | |
134 | ||
1da177e4 LT |
135 | /* Fill in an array of 64-bit statistics from various sources. |
136 | * This array will be appended to the end of the ethtool_stats | |
137 | * structure, and returned to user space | |
138 | */ | |
0bbaf069 | 139 | static void gfar_fill_stats(struct net_device *dev, struct ethtool_stats *dummy, u64 * buf) |
1da177e4 LT |
140 | { |
141 | int i; | |
142 | struct gfar_private *priv = netdev_priv(dev); | |
46ceb60c | 143 | struct gfar __iomem *regs = priv->gfargrp[0].regs; |
1da177e4 | 144 | u64 *extra = (u64 *) & priv->extra_stats; |
1da177e4 | 145 | |
b31a1d8b | 146 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) { |
f4983704 | 147 | u32 __iomem *rmon = (u32 __iomem *) ®s->rmon; |
0bbaf069 | 148 | struct gfar_stats *stats = (struct gfar_stats *) buf; |
1da177e4 | 149 | |
0bbaf069 | 150 | for (i = 0; i < GFAR_RMON_LEN; i++) |
cc8c6e37 | 151 | stats->rmon[i] = (u64) gfar_read(&rmon[i]); |
1da177e4 | 152 | |
0bbaf069 KG |
153 | for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++) |
154 | stats->extra[i] = extra[i]; | |
155 | } else | |
156 | for (i = 0; i < GFAR_EXTRA_STATS_LEN; i++) | |
157 | buf[i] = extra[i]; | |
1da177e4 LT |
158 | } |
159 | ||
b9f2c044 | 160 | static int gfar_sset_count(struct net_device *dev, int sset) |
1da177e4 | 161 | { |
1da177e4 | 162 | struct gfar_private *priv = netdev_priv(dev); |
1da177e4 | 163 | |
b9f2c044 JG |
164 | switch (sset) { |
165 | case ETH_SS_STATS: | |
b31a1d8b | 166 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_RMON) |
b9f2c044 JG |
167 | return GFAR_STATS_LEN; |
168 | else | |
169 | return GFAR_EXTRA_STATS_LEN; | |
170 | default: | |
171 | return -EOPNOTSUPP; | |
172 | } | |
1da177e4 LT |
173 | } |
174 | ||
1da177e4 | 175 | /* Fills in the drvinfo structure with some basic info */ |
0bbaf069 | 176 | static void gfar_gdrvinfo(struct net_device *dev, struct |
1da177e4 LT |
177 | ethtool_drvinfo *drvinfo) |
178 | { | |
179 | strncpy(drvinfo->driver, DRV_NAME, GFAR_INFOSTR_LEN); | |
180 | strncpy(drvinfo->version, gfar_driver_version, GFAR_INFOSTR_LEN); | |
181 | strncpy(drvinfo->fw_version, "N/A", GFAR_INFOSTR_LEN); | |
182 | strncpy(drvinfo->bus_info, "N/A", GFAR_INFOSTR_LEN); | |
1da177e4 LT |
183 | drvinfo->regdump_len = 0; |
184 | drvinfo->eedump_len = 0; | |
185 | } | |
186 | ||
bb40dcbb AF |
187 | |
188 | static int gfar_ssettings(struct net_device *dev, struct ethtool_cmd *cmd) | |
189 | { | |
190 | struct gfar_private *priv = netdev_priv(dev); | |
191 | struct phy_device *phydev = priv->phydev; | |
192 | ||
193 | if (NULL == phydev) | |
194 | return -ENODEV; | |
195 | ||
196 | return phy_ethtool_sset(phydev, cmd); | |
197 | } | |
198 | ||
199 | ||
1da177e4 | 200 | /* Return the current settings in the ethtool_cmd structure */ |
0bbaf069 | 201 | static int gfar_gsettings(struct net_device *dev, struct ethtool_cmd *cmd) |
1da177e4 LT |
202 | { |
203 | struct gfar_private *priv = netdev_priv(dev); | |
bb40dcbb | 204 | struct phy_device *phydev = priv->phydev; |
a12f801d SG |
205 | struct gfar_priv_rx_q *rx_queue = NULL; |
206 | struct gfar_priv_tx_q *tx_queue = NULL; | |
bb40dcbb AF |
207 | |
208 | if (NULL == phydev) | |
209 | return -ENODEV; | |
fba4ed03 SG |
210 | tx_queue = priv->tx_queue[0]; |
211 | rx_queue = priv->rx_queue[0]; | |
6aa20a22 | 212 | |
fba4ed03 SG |
213 | /* etsec-1.7 and older versions have only one txic |
214 | * and rxic regs although they support multiple queues */ | |
a12f801d SG |
215 | cmd->maxtxpkt = get_icft_value(tx_queue->txic); |
216 | cmd->maxrxpkt = get_icft_value(rx_queue->rxic); | |
1da177e4 | 217 | |
bb40dcbb | 218 | return phy_ethtool_gset(phydev, cmd); |
1da177e4 LT |
219 | } |
220 | ||
221 | /* Return the length of the register structure */ | |
0bbaf069 | 222 | static int gfar_reglen(struct net_device *dev) |
1da177e4 LT |
223 | { |
224 | return sizeof (struct gfar); | |
225 | } | |
226 | ||
227 | /* Return a dump of the GFAR register space */ | |
0bbaf069 | 228 | static void gfar_get_regs(struct net_device *dev, struct ethtool_regs *regs, void *regbuf) |
1da177e4 LT |
229 | { |
230 | int i; | |
231 | struct gfar_private *priv = netdev_priv(dev); | |
46ceb60c | 232 | u32 __iomem *theregs = (u32 __iomem *) priv->gfargrp[0].regs; |
1da177e4 LT |
233 | u32 *buf = (u32 *) regbuf; |
234 | ||
235 | for (i = 0; i < sizeof (struct gfar) / sizeof (u32); i++) | |
cc8c6e37 | 236 | buf[i] = gfar_read(&theregs[i]); |
1da177e4 LT |
237 | } |
238 | ||
1da177e4 LT |
239 | /* Convert microseconds to ethernet clock ticks, which changes |
240 | * depending on what speed the controller is running at */ | |
241 | static unsigned int gfar_usecs2ticks(struct gfar_private *priv, unsigned int usecs) | |
242 | { | |
243 | unsigned int count; | |
244 | ||
245 | /* The timer is different, depending on the interface speed */ | |
bb40dcbb AF |
246 | switch (priv->phydev->speed) { |
247 | case SPEED_1000: | |
1da177e4 LT |
248 | count = GFAR_GBIT_TIME; |
249 | break; | |
bb40dcbb | 250 | case SPEED_100: |
1da177e4 LT |
251 | count = GFAR_100_TIME; |
252 | break; | |
bb40dcbb | 253 | case SPEED_10: |
1da177e4 LT |
254 | default: |
255 | count = GFAR_10_TIME; | |
256 | break; | |
257 | } | |
258 | ||
259 | /* Make sure we return a number greater than 0 | |
260 | * if usecs > 0 */ | |
807540ba | 261 | return (usecs * 1000 + count - 1) / count; |
1da177e4 LT |
262 | } |
263 | ||
264 | /* Convert ethernet clock ticks to microseconds */ | |
265 | static unsigned int gfar_ticks2usecs(struct gfar_private *priv, unsigned int ticks) | |
266 | { | |
267 | unsigned int count; | |
268 | ||
269 | /* The timer is different, depending on the interface speed */ | |
bb40dcbb AF |
270 | switch (priv->phydev->speed) { |
271 | case SPEED_1000: | |
1da177e4 LT |
272 | count = GFAR_GBIT_TIME; |
273 | break; | |
bb40dcbb | 274 | case SPEED_100: |
1da177e4 LT |
275 | count = GFAR_100_TIME; |
276 | break; | |
bb40dcbb | 277 | case SPEED_10: |
1da177e4 LT |
278 | default: |
279 | count = GFAR_10_TIME; | |
280 | break; | |
281 | } | |
282 | ||
283 | /* Make sure we return a number greater than 0 */ | |
284 | /* if ticks is > 0 */ | |
807540ba | 285 | return (ticks * count) / 1000; |
1da177e4 LT |
286 | } |
287 | ||
288 | /* Get the coalescing parameters, and put them in the cvals | |
289 | * structure. */ | |
0bbaf069 | 290 | static int gfar_gcoalesce(struct net_device *dev, struct ethtool_coalesce *cvals) |
1da177e4 LT |
291 | { |
292 | struct gfar_private *priv = netdev_priv(dev); | |
a12f801d SG |
293 | struct gfar_priv_rx_q *rx_queue = NULL; |
294 | struct gfar_priv_tx_q *tx_queue = NULL; | |
b46a8454 DH |
295 | unsigned long rxtime; |
296 | unsigned long rxcount; | |
297 | unsigned long txtime; | |
298 | unsigned long txcount; | |
6aa20a22 | 299 | |
b31a1d8b | 300 | if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE)) |
0bbaf069 | 301 | return -EOPNOTSUPP; |
1da177e4 | 302 | |
bb40dcbb AF |
303 | if (NULL == priv->phydev) |
304 | return -ENODEV; | |
305 | ||
fba4ed03 SG |
306 | rx_queue = priv->rx_queue[0]; |
307 | tx_queue = priv->tx_queue[0]; | |
a12f801d SG |
308 | |
309 | rxtime = get_ictt_value(rx_queue->rxic); | |
310 | rxcount = get_icft_value(rx_queue->rxic); | |
311 | txtime = get_ictt_value(tx_queue->txic); | |
312 | txcount = get_icft_value(tx_queue->txic); | |
b46a8454 DH |
313 | cvals->rx_coalesce_usecs = gfar_ticks2usecs(priv, rxtime); |
314 | cvals->rx_max_coalesced_frames = rxcount; | |
1da177e4 | 315 | |
b46a8454 DH |
316 | cvals->tx_coalesce_usecs = gfar_ticks2usecs(priv, txtime); |
317 | cvals->tx_max_coalesced_frames = txcount; | |
1da177e4 LT |
318 | |
319 | cvals->use_adaptive_rx_coalesce = 0; | |
320 | cvals->use_adaptive_tx_coalesce = 0; | |
321 | ||
322 | cvals->pkt_rate_low = 0; | |
323 | cvals->rx_coalesce_usecs_low = 0; | |
324 | cvals->rx_max_coalesced_frames_low = 0; | |
325 | cvals->tx_coalesce_usecs_low = 0; | |
326 | cvals->tx_max_coalesced_frames_low = 0; | |
327 | ||
328 | /* When the packet rate is below pkt_rate_high but above | |
329 | * pkt_rate_low (both measured in packets per second) the | |
330 | * normal {rx,tx}_* coalescing parameters are used. | |
331 | */ | |
332 | ||
333 | /* When the packet rate is (measured in packets per second) | |
334 | * is above pkt_rate_high, the {rx,tx}_*_high parameters are | |
335 | * used. | |
336 | */ | |
337 | cvals->pkt_rate_high = 0; | |
338 | cvals->rx_coalesce_usecs_high = 0; | |
339 | cvals->rx_max_coalesced_frames_high = 0; | |
340 | cvals->tx_coalesce_usecs_high = 0; | |
341 | cvals->tx_max_coalesced_frames_high = 0; | |
342 | ||
343 | /* How often to do adaptive coalescing packet rate sampling, | |
344 | * measured in seconds. Must not be zero. | |
345 | */ | |
346 | cvals->rate_sample_interval = 0; | |
347 | ||
348 | return 0; | |
349 | } | |
350 | ||
351 | /* Change the coalescing values. | |
352 | * Both cvals->*_usecs and cvals->*_frames have to be > 0 | |
353 | * in order for coalescing to be active | |
354 | */ | |
0bbaf069 | 355 | static int gfar_scoalesce(struct net_device *dev, struct ethtool_coalesce *cvals) |
1da177e4 LT |
356 | { |
357 | struct gfar_private *priv = netdev_priv(dev); | |
46ceb60c | 358 | int i = 0; |
1da177e4 | 359 | |
b31a1d8b | 360 | if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_COALESCE)) |
0bbaf069 KG |
361 | return -EOPNOTSUPP; |
362 | ||
1da177e4 | 363 | /* Set up rx coalescing */ |
46ceb60c SG |
364 | /* As of now, we will enable/disable coalescing for all |
365 | * queues together in case of eTSEC2, this will be modified | |
366 | * along with the ethtool interface */ | |
1da177e4 | 367 | if ((cvals->rx_coalesce_usecs == 0) || |
46ceb60c SG |
368 | (cvals->rx_max_coalesced_frames == 0)) { |
369 | for (i = 0; i < priv->num_rx_queues; i++) | |
370 | priv->rx_queue[i]->rxcoalescing = 0; | |
371 | } else { | |
372 | for (i = 0; i < priv->num_rx_queues; i++) | |
373 | priv->rx_queue[i]->rxcoalescing = 1; | |
374 | } | |
1da177e4 | 375 | |
bb40dcbb AF |
376 | if (NULL == priv->phydev) |
377 | return -ENODEV; | |
378 | ||
379 | /* Check the bounds of the values */ | |
380 | if (cvals->rx_coalesce_usecs > GFAR_MAX_COAL_USECS) { | |
381 | pr_info("Coalescing is limited to %d microseconds\n", | |
59deab26 | 382 | GFAR_MAX_COAL_USECS); |
bb40dcbb AF |
383 | return -EINVAL; |
384 | } | |
385 | ||
386 | if (cvals->rx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) { | |
387 | pr_info("Coalescing is limited to %d frames\n", | |
59deab26 | 388 | GFAR_MAX_COAL_FRAMES); |
bb40dcbb AF |
389 | return -EINVAL; |
390 | } | |
391 | ||
46ceb60c SG |
392 | for (i = 0; i < priv->num_rx_queues; i++) { |
393 | priv->rx_queue[i]->rxic = mk_ic_value( | |
394 | cvals->rx_max_coalesced_frames, | |
395 | gfar_usecs2ticks(priv, cvals->rx_coalesce_usecs)); | |
396 | } | |
1da177e4 LT |
397 | |
398 | /* Set up tx coalescing */ | |
399 | if ((cvals->tx_coalesce_usecs == 0) || | |
46ceb60c SG |
400 | (cvals->tx_max_coalesced_frames == 0)) { |
401 | for (i = 0; i < priv->num_tx_queues; i++) | |
402 | priv->tx_queue[i]->txcoalescing = 0; | |
403 | } else { | |
404 | for (i = 0; i < priv->num_tx_queues; i++) | |
405 | priv->tx_queue[i]->txcoalescing = 1; | |
406 | } | |
1da177e4 | 407 | |
bb40dcbb AF |
408 | /* Check the bounds of the values */ |
409 | if (cvals->tx_coalesce_usecs > GFAR_MAX_COAL_USECS) { | |
410 | pr_info("Coalescing is limited to %d microseconds\n", | |
59deab26 | 411 | GFAR_MAX_COAL_USECS); |
bb40dcbb AF |
412 | return -EINVAL; |
413 | } | |
414 | ||
415 | if (cvals->tx_max_coalesced_frames > GFAR_MAX_COAL_FRAMES) { | |
416 | pr_info("Coalescing is limited to %d frames\n", | |
59deab26 | 417 | GFAR_MAX_COAL_FRAMES); |
bb40dcbb AF |
418 | return -EINVAL; |
419 | } | |
420 | ||
46ceb60c SG |
421 | for (i = 0; i < priv->num_tx_queues; i++) { |
422 | priv->tx_queue[i]->txic = mk_ic_value( | |
423 | cvals->tx_max_coalesced_frames, | |
424 | gfar_usecs2ticks(priv, cvals->tx_coalesce_usecs)); | |
425 | } | |
1da177e4 | 426 | |
46ceb60c | 427 | gfar_configure_coalescing(priv, 0xFF, 0xFF); |
1da177e4 LT |
428 | |
429 | return 0; | |
430 | } | |
431 | ||
432 | /* Fills in rvals with the current ring parameters. Currently, | |
433 | * rx, rx_mini, and rx_jumbo rings are the same size, as mini and | |
434 | * jumbo are ignored by the driver */ | |
0bbaf069 | 435 | static void gfar_gringparam(struct net_device *dev, struct ethtool_ringparam *rvals) |
1da177e4 LT |
436 | { |
437 | struct gfar_private *priv = netdev_priv(dev); | |
a12f801d SG |
438 | struct gfar_priv_tx_q *tx_queue = NULL; |
439 | struct gfar_priv_rx_q *rx_queue = NULL; | |
440 | ||
fba4ed03 SG |
441 | tx_queue = priv->tx_queue[0]; |
442 | rx_queue = priv->rx_queue[0]; | |
1da177e4 LT |
443 | |
444 | rvals->rx_max_pending = GFAR_RX_MAX_RING_SIZE; | |
445 | rvals->rx_mini_max_pending = GFAR_RX_MAX_RING_SIZE; | |
446 | rvals->rx_jumbo_max_pending = GFAR_RX_MAX_RING_SIZE; | |
447 | rvals->tx_max_pending = GFAR_TX_MAX_RING_SIZE; | |
448 | ||
449 | /* Values changeable by the user. The valid values are | |
450 | * in the range 1 to the "*_max_pending" counterpart above. | |
451 | */ | |
a12f801d SG |
452 | rvals->rx_pending = rx_queue->rx_ring_size; |
453 | rvals->rx_mini_pending = rx_queue->rx_ring_size; | |
454 | rvals->rx_jumbo_pending = rx_queue->rx_ring_size; | |
455 | rvals->tx_pending = tx_queue->tx_ring_size; | |
1da177e4 LT |
456 | } |
457 | ||
458 | /* Change the current ring parameters, stopping the controller if | |
459 | * necessary so that we don't mess things up while we're in | |
460 | * motion. We wait for the ring to be clean before reallocating | |
461 | * the rings. */ | |
0bbaf069 | 462 | static int gfar_sringparam(struct net_device *dev, struct ethtool_ringparam *rvals) |
1da177e4 | 463 | { |
1da177e4 | 464 | struct gfar_private *priv = netdev_priv(dev); |
fba4ed03 | 465 | int err = 0, i = 0; |
1da177e4 LT |
466 | |
467 | if (rvals->rx_pending > GFAR_RX_MAX_RING_SIZE) | |
468 | return -EINVAL; | |
469 | ||
470 | if (!is_power_of_2(rvals->rx_pending)) { | |
59deab26 | 471 | netdev_err(dev, "Ring sizes must be a power of 2\n"); |
1da177e4 LT |
472 | return -EINVAL; |
473 | } | |
474 | ||
475 | if (rvals->tx_pending > GFAR_TX_MAX_RING_SIZE) | |
476 | return -EINVAL; | |
477 | ||
478 | if (!is_power_of_2(rvals->tx_pending)) { | |
59deab26 | 479 | netdev_err(dev, "Ring sizes must be a power of 2\n"); |
1da177e4 LT |
480 | return -EINVAL; |
481 | } | |
482 | ||
a12f801d | 483 | |
0bbaf069 KG |
484 | if (dev->flags & IFF_UP) { |
485 | unsigned long flags; | |
1da177e4 | 486 | |
0bbaf069 KG |
487 | /* Halt TX and RX, and process the frames which |
488 | * have already been received */ | |
fba4ed03 SG |
489 | local_irq_save(flags); |
490 | lock_tx_qs(priv); | |
491 | lock_rx_qs(priv); | |
fef6108d | 492 | |
0bbaf069 | 493 | gfar_halt(dev); |
fef6108d | 494 | |
fba4ed03 SG |
495 | unlock_rx_qs(priv); |
496 | unlock_tx_qs(priv); | |
497 | local_irq_restore(flags); | |
1da177e4 | 498 | |
fba4ed03 SG |
499 | for (i = 0; i < priv->num_rx_queues; i++) |
500 | gfar_clean_rx_ring(priv->rx_queue[i], | |
501 | priv->rx_queue[i]->rx_ring_size); | |
12dea57b | 502 | |
0bbaf069 KG |
503 | /* Now we take down the rings to rebuild them */ |
504 | stop_gfar(dev); | |
505 | } | |
1da177e4 | 506 | |
0bbaf069 | 507 | /* Change the size */ |
fba4ed03 SG |
508 | for (i = 0; i < priv->num_rx_queues; i++) { |
509 | priv->rx_queue[i]->rx_ring_size = rvals->rx_pending; | |
510 | priv->tx_queue[i]->tx_ring_size = rvals->tx_pending; | |
511 | priv->tx_queue[i]->num_txbdfree = priv->tx_queue[i]->tx_ring_size; | |
512 | } | |
1da177e4 | 513 | |
0bbaf069 | 514 | /* Rebuild the rings with the new size */ |
12dea57b | 515 | if (dev->flags & IFF_UP) { |
0bbaf069 | 516 | err = startup_gfar(dev); |
fba4ed03 | 517 | netif_tx_wake_all_queues(dev); |
12dea57b | 518 | } |
0bbaf069 KG |
519 | return err; |
520 | } | |
1da177e4 | 521 | |
c8f44aff | 522 | int gfar_set_features(struct net_device *dev, netdev_features_t features) |
0bbaf069 KG |
523 | { |
524 | struct gfar_private *priv = netdev_priv(dev); | |
d87eb127 | 525 | unsigned long flags; |
fba4ed03 | 526 | int err = 0, i = 0; |
c8f44aff | 527 | netdev_features_t changed = dev->features ^ features; |
1da177e4 | 528 | |
87c288c6 JP |
529 | if (changed & (NETIF_F_HW_VLAN_TX|NETIF_F_HW_VLAN_RX)) |
530 | gfar_vlan_mode(dev, features); | |
531 | ||
8b3afe95 MM |
532 | if (!(changed & NETIF_F_RXCSUM)) |
533 | return 0; | |
a12f801d | 534 | |
0bbaf069 | 535 | if (dev->flags & IFF_UP) { |
0bbaf069 KG |
536 | /* Halt TX and RX, and process the frames which |
537 | * have already been received */ | |
fba4ed03 SG |
538 | local_irq_save(flags); |
539 | lock_tx_qs(priv); | |
540 | lock_rx_qs(priv); | |
fef6108d | 541 | |
0bbaf069 | 542 | gfar_halt(dev); |
fef6108d | 543 | |
fba4ed03 SG |
544 | unlock_tx_qs(priv); |
545 | unlock_rx_qs(priv); | |
9756403b | 546 | local_irq_restore(flags); |
0bbaf069 | 547 | |
fba4ed03 SG |
548 | for (i = 0; i < priv->num_rx_queues; i++) |
549 | gfar_clean_rx_ring(priv->rx_queue[i], | |
550 | priv->rx_queue[i]->rx_ring_size); | |
12dea57b | 551 | |
0bbaf069 | 552 | /* Now we take down the rings to rebuild them */ |
1da177e4 | 553 | stop_gfar(dev); |
1da177e4 | 554 | |
8b3afe95 | 555 | dev->features = features; |
1da177e4 | 556 | |
1da177e4 | 557 | err = startup_gfar(dev); |
fba4ed03 | 558 | netif_tx_wake_all_queues(dev); |
12dea57b | 559 | } |
1da177e4 LT |
560 | return err; |
561 | } | |
562 | ||
0bbaf069 | 563 | static uint32_t gfar_get_msglevel(struct net_device *dev) |
6aa20a22 | 564 | { |
0bbaf069 KG |
565 | struct gfar_private *priv = netdev_priv(dev); |
566 | return priv->msg_enable; | |
6aa20a22 JG |
567 | } |
568 | ||
0bbaf069 | 569 | static void gfar_set_msglevel(struct net_device *dev, uint32_t data) |
6aa20a22 | 570 | { |
0bbaf069 KG |
571 | struct gfar_private *priv = netdev_priv(dev); |
572 | priv->msg_enable = data; | |
573 | } | |
574 | ||
d87eb127 SW |
575 | #ifdef CONFIG_PM |
576 | static void gfar_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol) | |
577 | { | |
578 | struct gfar_private *priv = netdev_priv(dev); | |
579 | ||
b31a1d8b | 580 | if (priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) { |
d87eb127 SW |
581 | wol->supported = WAKE_MAGIC; |
582 | wol->wolopts = priv->wol_en ? WAKE_MAGIC : 0; | |
583 | } else { | |
584 | wol->supported = wol->wolopts = 0; | |
585 | } | |
586 | } | |
587 | ||
588 | static int gfar_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) | |
589 | { | |
590 | struct gfar_private *priv = netdev_priv(dev); | |
591 | unsigned long flags; | |
592 | ||
b31a1d8b | 593 | if (!(priv->device_flags & FSL_GIANFAR_DEV_HAS_MAGIC_PACKET) && |
d87eb127 SW |
594 | wol->wolopts != 0) |
595 | return -EINVAL; | |
596 | ||
597 | if (wol->wolopts & ~WAKE_MAGIC) | |
598 | return -EINVAL; | |
599 | ||
6c4f1994 RW |
600 | device_set_wakeup_enable(&dev->dev, wol->wolopts & WAKE_MAGIC); |
601 | ||
d87eb127 | 602 | spin_lock_irqsave(&priv->bflock, flags); |
6c4f1994 | 603 | priv->wol_en = !!device_may_wakeup(&dev->dev); |
d87eb127 SW |
604 | spin_unlock_irqrestore(&priv->bflock, flags); |
605 | ||
606 | return 0; | |
607 | } | |
608 | #endif | |
0bbaf069 | 609 | |
7a8b3372 SG |
610 | static void ethflow_to_filer_rules (struct gfar_private *priv, u64 ethflow) |
611 | { | |
612 | u32 fcr = 0x0, fpr = FPR_FILER_MASK; | |
613 | ||
614 | if (ethflow & RXH_L2DA) { | |
615 | fcr = RQFCR_PID_DAH |RQFCR_CMP_NOMATCH | | |
616 | RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0; | |
6c43e046 WJB |
617 | priv->ftp_rqfpr[priv->cur_filer_idx] = fpr; |
618 | priv->ftp_rqfcr[priv->cur_filer_idx] = fcr; | |
7a8b3372 SG |
619 | gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr); |
620 | priv->cur_filer_idx = priv->cur_filer_idx - 1; | |
621 | ||
622 | fcr = RQFCR_PID_DAL | RQFCR_AND | RQFCR_CMP_NOMATCH | | |
623 | RQFCR_HASH | RQFCR_AND | RQFCR_HASHTBL_0; | |
6c43e046 WJB |
624 | priv->ftp_rqfpr[priv->cur_filer_idx] = fpr; |
625 | priv->ftp_rqfcr[priv->cur_filer_idx] = fcr; | |
7a8b3372 SG |
626 | gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr); |
627 | priv->cur_filer_idx = priv->cur_filer_idx - 1; | |
628 | } | |
629 | ||
630 | if (ethflow & RXH_VLAN) { | |
631 | fcr = RQFCR_PID_VID | RQFCR_CMP_NOMATCH | RQFCR_HASH | | |
632 | RQFCR_AND | RQFCR_HASHTBL_0; | |
633 | gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr); | |
6c43e046 WJB |
634 | priv->ftp_rqfpr[priv->cur_filer_idx] = fpr; |
635 | priv->ftp_rqfcr[priv->cur_filer_idx] = fcr; | |
7a8b3372 SG |
636 | priv->cur_filer_idx = priv->cur_filer_idx - 1; |
637 | } | |
638 | ||
639 | if (ethflow & RXH_IP_SRC) { | |
640 | fcr = RQFCR_PID_SIA | RQFCR_CMP_NOMATCH | RQFCR_HASH | | |
641 | RQFCR_AND | RQFCR_HASHTBL_0; | |
6c43e046 WJB |
642 | priv->ftp_rqfpr[priv->cur_filer_idx] = fpr; |
643 | priv->ftp_rqfcr[priv->cur_filer_idx] = fcr; | |
7a8b3372 SG |
644 | gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr); |
645 | priv->cur_filer_idx = priv->cur_filer_idx - 1; | |
646 | } | |
647 | ||
648 | if (ethflow & (RXH_IP_DST)) { | |
649 | fcr = RQFCR_PID_DIA | RQFCR_CMP_NOMATCH | RQFCR_HASH | | |
650 | RQFCR_AND | RQFCR_HASHTBL_0; | |
6c43e046 WJB |
651 | priv->ftp_rqfpr[priv->cur_filer_idx] = fpr; |
652 | priv->ftp_rqfcr[priv->cur_filer_idx] = fcr; | |
7a8b3372 SG |
653 | gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr); |
654 | priv->cur_filer_idx = priv->cur_filer_idx - 1; | |
655 | } | |
656 | ||
657 | if (ethflow & RXH_L3_PROTO) { | |
658 | fcr = RQFCR_PID_L4P | RQFCR_CMP_NOMATCH | RQFCR_HASH | | |
659 | RQFCR_AND | RQFCR_HASHTBL_0; | |
6c43e046 WJB |
660 | priv->ftp_rqfpr[priv->cur_filer_idx] = fpr; |
661 | priv->ftp_rqfcr[priv->cur_filer_idx] = fcr; | |
7a8b3372 SG |
662 | gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr); |
663 | priv->cur_filer_idx = priv->cur_filer_idx - 1; | |
664 | } | |
665 | ||
666 | if (ethflow & RXH_L4_B_0_1) { | |
667 | fcr = RQFCR_PID_SPT | RQFCR_CMP_NOMATCH | RQFCR_HASH | | |
668 | RQFCR_AND | RQFCR_HASHTBL_0; | |
6c43e046 WJB |
669 | priv->ftp_rqfpr[priv->cur_filer_idx] = fpr; |
670 | priv->ftp_rqfcr[priv->cur_filer_idx] = fcr; | |
7a8b3372 SG |
671 | gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr); |
672 | priv->cur_filer_idx = priv->cur_filer_idx - 1; | |
673 | } | |
674 | ||
675 | if (ethflow & RXH_L4_B_2_3) { | |
676 | fcr = RQFCR_PID_DPT | RQFCR_CMP_NOMATCH | RQFCR_HASH | | |
677 | RQFCR_AND | RQFCR_HASHTBL_0; | |
6c43e046 WJB |
678 | priv->ftp_rqfpr[priv->cur_filer_idx] = fpr; |
679 | priv->ftp_rqfcr[priv->cur_filer_idx] = fcr; | |
7a8b3372 SG |
680 | gfar_write_filer(priv, priv->cur_filer_idx, fcr, fpr); |
681 | priv->cur_filer_idx = priv->cur_filer_idx - 1; | |
682 | } | |
683 | } | |
684 | ||
685 | static int gfar_ethflow_to_filer_table(struct gfar_private *priv, u64 ethflow, u64 class) | |
686 | { | |
687 | unsigned int last_rule_idx = priv->cur_filer_idx; | |
688 | unsigned int cmp_rqfpr; | |
588dc911 WS |
689 | unsigned int *local_rqfpr; |
690 | unsigned int *local_rqfcr; | |
7a8b3372 SG |
691 | int i = 0x0, k = 0x0; |
692 | int j = MAX_FILER_IDX, l = 0x0; | |
588dc911 WS |
693 | int ret = 1; |
694 | ||
695 | local_rqfpr = kmalloc(sizeof(unsigned int) * (MAX_FILER_IDX + 1), | |
696 | GFP_KERNEL); | |
697 | local_rqfcr = kmalloc(sizeof(unsigned int) * (MAX_FILER_IDX + 1), | |
698 | GFP_KERNEL); | |
699 | if (!local_rqfpr || !local_rqfcr) { | |
700 | pr_err("Out of memory\n"); | |
701 | ret = 0; | |
702 | goto err; | |
703 | } | |
7a8b3372 SG |
704 | |
705 | switch (class) { | |
706 | case TCP_V4_FLOW: | |
707 | cmp_rqfpr = RQFPR_IPV4 |RQFPR_TCP; | |
708 | break; | |
709 | case UDP_V4_FLOW: | |
710 | cmp_rqfpr = RQFPR_IPV4 |RQFPR_UDP; | |
711 | break; | |
712 | case TCP_V6_FLOW: | |
713 | cmp_rqfpr = RQFPR_IPV6 |RQFPR_TCP; | |
714 | break; | |
715 | case UDP_V6_FLOW: | |
716 | cmp_rqfpr = RQFPR_IPV6 |RQFPR_UDP; | |
717 | break; | |
7a8b3372 | 718 | default: |
59deab26 | 719 | pr_err("Right now this class is not supported\n"); |
588dc911 WS |
720 | ret = 0; |
721 | goto err; | |
7a8b3372 SG |
722 | } |
723 | ||
724 | for (i = 0; i < MAX_FILER_IDX + 1; i++) { | |
6c43e046 WJB |
725 | local_rqfpr[j] = priv->ftp_rqfpr[i]; |
726 | local_rqfcr[j] = priv->ftp_rqfcr[i]; | |
7a8b3372 | 727 | j--; |
6c43e046 | 728 | if ((priv->ftp_rqfcr[i] == (RQFCR_PID_PARSE | |
7a8b3372 | 729 | RQFCR_CLE |RQFCR_AND)) && |
6c43e046 | 730 | (priv->ftp_rqfpr[i] == cmp_rqfpr)) |
7a8b3372 SG |
731 | break; |
732 | } | |
733 | ||
734 | if (i == MAX_FILER_IDX + 1) { | |
59deab26 | 735 | pr_err("No parse rule found, can't create hash rules\n"); |
588dc911 WS |
736 | ret = 0; |
737 | goto err; | |
7a8b3372 SG |
738 | } |
739 | ||
740 | /* If a match was found, then it begins the starting of a cluster rule | |
741 | * if it was already programmed, we need to overwrite these rules | |
742 | */ | |
743 | for (l = i+1; l < MAX_FILER_IDX; l++) { | |
6c43e046 WJB |
744 | if ((priv->ftp_rqfcr[l] & RQFCR_CLE) && |
745 | !(priv->ftp_rqfcr[l] & RQFCR_AND)) { | |
746 | priv->ftp_rqfcr[l] = RQFCR_CLE | RQFCR_CMP_EXACT | | |
7a8b3372 | 747 | RQFCR_HASHTBL_0 | RQFCR_PID_MASK; |
6c43e046 WJB |
748 | priv->ftp_rqfpr[l] = FPR_FILER_MASK; |
749 | gfar_write_filer(priv, l, priv->ftp_rqfcr[l], | |
750 | priv->ftp_rqfpr[l]); | |
7a8b3372 SG |
751 | break; |
752 | } | |
753 | ||
6c43e046 WJB |
754 | if (!(priv->ftp_rqfcr[l] & RQFCR_CLE) && |
755 | (priv->ftp_rqfcr[l] & RQFCR_AND)) | |
7a8b3372 SG |
756 | continue; |
757 | else { | |
6c43e046 WJB |
758 | local_rqfpr[j] = priv->ftp_rqfpr[l]; |
759 | local_rqfcr[j] = priv->ftp_rqfcr[l]; | |
7a8b3372 SG |
760 | j--; |
761 | } | |
762 | } | |
763 | ||
764 | priv->cur_filer_idx = l - 1; | |
765 | last_rule_idx = l; | |
766 | ||
767 | /* hash rules */ | |
768 | ethflow_to_filer_rules(priv, ethflow); | |
769 | ||
770 | /* Write back the popped out rules again */ | |
771 | for (k = j+1; k < MAX_FILER_IDX; k++) { | |
6c43e046 WJB |
772 | priv->ftp_rqfpr[priv->cur_filer_idx] = local_rqfpr[k]; |
773 | priv->ftp_rqfcr[priv->cur_filer_idx] = local_rqfcr[k]; | |
7a8b3372 SG |
774 | gfar_write_filer(priv, priv->cur_filer_idx, |
775 | local_rqfcr[k], local_rqfpr[k]); | |
776 | if (!priv->cur_filer_idx) | |
777 | break; | |
778 | priv->cur_filer_idx = priv->cur_filer_idx - 1; | |
779 | } | |
780 | ||
588dc911 WS |
781 | err: |
782 | kfree(local_rqfcr); | |
783 | kfree(local_rqfpr); | |
784 | return ret; | |
7a8b3372 SG |
785 | } |
786 | ||
787 | static int gfar_set_hash_opts(struct gfar_private *priv, struct ethtool_rxnfc *cmd) | |
788 | { | |
7a8b3372 SG |
789 | /* write the filer rules here */ |
790 | if (!gfar_ethflow_to_filer_table(priv, cmd->data, cmd->flow_type)) | |
bde3528f | 791 | return -EINVAL; |
7a8b3372 SG |
792 | |
793 | return 0; | |
794 | } | |
795 | ||
4aa3a715 SP |
796 | static int gfar_check_filer_hardware(struct gfar_private *priv) |
797 | { | |
798 | struct gfar __iomem *regs = NULL; | |
799 | u32 i; | |
800 | ||
801 | regs = priv->gfargrp[0].regs; | |
802 | ||
803 | /* Check if we are in FIFO mode */ | |
804 | i = gfar_read(®s->ecntrl); | |
805 | i &= ECNTRL_FIFM; | |
806 | if (i == ECNTRL_FIFM) { | |
807 | netdev_notice(priv->ndev, "Interface in FIFO mode\n"); | |
808 | i = gfar_read(®s->rctrl); | |
809 | i &= RCTRL_PRSDEP_MASK | RCTRL_PRSFM; | |
810 | if (i == (RCTRL_PRSDEP_MASK | RCTRL_PRSFM)) { | |
811 | netdev_info(priv->ndev, | |
812 | "Receive Queue Filtering enabled\n"); | |
813 | } else { | |
814 | netdev_warn(priv->ndev, | |
815 | "Receive Queue Filtering disabled\n"); | |
816 | return -EOPNOTSUPP; | |
817 | } | |
818 | } | |
819 | /* Or in standard mode */ | |
820 | else { | |
821 | i = gfar_read(®s->rctrl); | |
822 | i &= RCTRL_PRSDEP_MASK; | |
823 | if (i == RCTRL_PRSDEP_MASK) { | |
824 | netdev_info(priv->ndev, | |
825 | "Receive Queue Filtering enabled\n"); | |
826 | } else { | |
827 | netdev_warn(priv->ndev, | |
828 | "Receive Queue Filtering disabled\n"); | |
829 | return -EOPNOTSUPP; | |
830 | } | |
831 | } | |
832 | ||
833 | /* Sets the properties for arbitrary filer rule | |
834 | * to the first 4 Layer 4 Bytes */ | |
835 | regs->rbifx = 0xC0C1C2C3; | |
836 | return 0; | |
837 | } | |
838 | ||
839 | static int gfar_comp_asc(const void *a, const void *b) | |
840 | { | |
841 | return memcmp(a, b, 4); | |
842 | } | |
843 | ||
844 | static int gfar_comp_desc(const void *a, const void *b) | |
845 | { | |
846 | return -memcmp(a, b, 4); | |
847 | } | |
848 | ||
849 | static void gfar_swap(void *a, void *b, int size) | |
850 | { | |
851 | u32 *_a = a; | |
852 | u32 *_b = b; | |
853 | ||
854 | swap(_a[0], _b[0]); | |
855 | swap(_a[1], _b[1]); | |
856 | swap(_a[2], _b[2]); | |
857 | swap(_a[3], _b[3]); | |
858 | } | |
859 | ||
860 | /* Write a mask to filer cache */ | |
861 | static void gfar_set_mask(u32 mask, struct filer_table *tab) | |
862 | { | |
863 | tab->fe[tab->index].ctrl = RQFCR_AND | RQFCR_PID_MASK | RQFCR_CMP_EXACT; | |
864 | tab->fe[tab->index].prop = mask; | |
865 | tab->index++; | |
866 | } | |
867 | ||
868 | /* Sets parse bits (e.g. IP or TCP) */ | |
869 | static void gfar_set_parse_bits(u32 value, u32 mask, struct filer_table *tab) | |
870 | { | |
871 | gfar_set_mask(mask, tab); | |
872 | tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_PID_PARSE | |
873 | | RQFCR_AND; | |
874 | tab->fe[tab->index].prop = value; | |
875 | tab->index++; | |
876 | } | |
877 | ||
878 | static void gfar_set_general_attribute(u32 value, u32 mask, u32 flag, | |
879 | struct filer_table *tab) | |
880 | { | |
881 | gfar_set_mask(mask, tab); | |
882 | tab->fe[tab->index].ctrl = RQFCR_CMP_EXACT | RQFCR_AND | flag; | |
883 | tab->fe[tab->index].prop = value; | |
884 | tab->index++; | |
885 | } | |
886 | ||
887 | /* | |
888 | * For setting a tuple of value and mask of type flag | |
889 | * Example: | |
890 | * IP-Src = 10.0.0.0/255.0.0.0 | |
891 | * value: 0x0A000000 mask: FF000000 flag: RQFPR_IPV4 | |
892 | * | |
893 | * Ethtool gives us a value=0 and mask=~0 for don't care a tuple | |
894 | * For a don't care mask it gives us a 0 | |
895 | * | |
896 | * The check if don't care and the mask adjustment if mask=0 is done for VLAN | |
897 | * and MAC stuff on an upper level (due to missing information on this level). | |
898 | * For these guys we can discard them if they are value=0 and mask=0. | |
899 | * | |
900 | * Further the all masks are one-padded for better hardware efficiency. | |
901 | */ | |
902 | static void gfar_set_attribute(u32 value, u32 mask, u32 flag, | |
903 | struct filer_table *tab) | |
904 | { | |
905 | switch (flag) { | |
380b153c | 906 | /* 3bit */ |
4aa3a715 SP |
907 | case RQFCR_PID_PRI: |
908 | if (!(value | mask)) | |
909 | return; | |
910 | mask |= RQFCR_PID_PRI_MASK; | |
911 | break; | |
912 | /* 8bit */ | |
913 | case RQFCR_PID_L4P: | |
914 | case RQFCR_PID_TOS: | |
915 | if (!~(mask | RQFCR_PID_L4P_MASK)) | |
916 | return; | |
917 | if (!mask) | |
918 | mask = ~0; | |
919 | else | |
920 | mask |= RQFCR_PID_L4P_MASK; | |
921 | break; | |
922 | /* 12bit */ | |
923 | case RQFCR_PID_VID: | |
924 | if (!(value | mask)) | |
925 | return; | |
926 | mask |= RQFCR_PID_VID_MASK; | |
927 | break; | |
928 | /* 16bit */ | |
929 | case RQFCR_PID_DPT: | |
930 | case RQFCR_PID_SPT: | |
931 | case RQFCR_PID_ETY: | |
932 | if (!~(mask | RQFCR_PID_PORT_MASK)) | |
933 | return; | |
934 | if (!mask) | |
935 | mask = ~0; | |
936 | else | |
937 | mask |= RQFCR_PID_PORT_MASK; | |
938 | break; | |
939 | /* 24bit */ | |
940 | case RQFCR_PID_DAH: | |
941 | case RQFCR_PID_DAL: | |
942 | case RQFCR_PID_SAH: | |
943 | case RQFCR_PID_SAL: | |
944 | if (!(value | mask)) | |
945 | return; | |
946 | mask |= RQFCR_PID_MAC_MASK; | |
947 | break; | |
948 | /* for all real 32bit masks */ | |
949 | default: | |
950 | if (!~mask) | |
951 | return; | |
952 | if (!mask) | |
953 | mask = ~0; | |
954 | break; | |
955 | } | |
956 | gfar_set_general_attribute(value, mask, flag, tab); | |
957 | } | |
958 | ||
959 | /* Translates value and mask for UDP, TCP or SCTP */ | |
960 | static void gfar_set_basic_ip(struct ethtool_tcpip4_spec *value, | |
961 | struct ethtool_tcpip4_spec *mask, struct filer_table *tab) | |
962 | { | |
963 | gfar_set_attribute(value->ip4src, mask->ip4src, RQFCR_PID_SIA, tab); | |
964 | gfar_set_attribute(value->ip4dst, mask->ip4dst, RQFCR_PID_DIA, tab); | |
965 | gfar_set_attribute(value->pdst, mask->pdst, RQFCR_PID_DPT, tab); | |
966 | gfar_set_attribute(value->psrc, mask->psrc, RQFCR_PID_SPT, tab); | |
967 | gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab); | |
968 | } | |
969 | ||
970 | /* Translates value and mask for RAW-IP4 */ | |
971 | static void gfar_set_user_ip(struct ethtool_usrip4_spec *value, | |
972 | struct ethtool_usrip4_spec *mask, struct filer_table *tab) | |
973 | { | |
974 | gfar_set_attribute(value->ip4src, mask->ip4src, RQFCR_PID_SIA, tab); | |
975 | gfar_set_attribute(value->ip4dst, mask->ip4dst, RQFCR_PID_DIA, tab); | |
976 | gfar_set_attribute(value->tos, mask->tos, RQFCR_PID_TOS, tab); | |
977 | gfar_set_attribute(value->proto, mask->proto, RQFCR_PID_L4P, tab); | |
978 | gfar_set_attribute(value->l4_4_bytes, mask->l4_4_bytes, RQFCR_PID_ARB, | |
979 | tab); | |
980 | ||
981 | } | |
982 | ||
983 | /* Translates value and mask for ETHER spec */ | |
984 | static void gfar_set_ether(struct ethhdr *value, struct ethhdr *mask, | |
985 | struct filer_table *tab) | |
986 | { | |
987 | u32 upper_temp_mask = 0; | |
988 | u32 lower_temp_mask = 0; | |
989 | /* Source address */ | |
990 | if (!is_broadcast_ether_addr(mask->h_source)) { | |
991 | ||
992 | if (is_zero_ether_addr(mask->h_source)) { | |
993 | upper_temp_mask = 0xFFFFFFFF; | |
994 | lower_temp_mask = 0xFFFFFFFF; | |
995 | } else { | |
996 | upper_temp_mask = mask->h_source[0] << 16 | |
997 | | mask->h_source[1] << 8 | |
998 | | mask->h_source[2]; | |
999 | lower_temp_mask = mask->h_source[3] << 16 | |
1000 | | mask->h_source[4] << 8 | |
1001 | | mask->h_source[5]; | |
1002 | } | |
1003 | /* Upper 24bit */ | |
1004 | gfar_set_attribute( | |
1005 | value->h_source[0] << 16 | value->h_source[1] | |
1006 | << 8 | value->h_source[2], | |
1007 | upper_temp_mask, RQFCR_PID_SAH, tab); | |
1008 | /* And the same for the lower part */ | |
1009 | gfar_set_attribute( | |
1010 | value->h_source[3] << 16 | value->h_source[4] | |
1011 | << 8 | value->h_source[5], | |
1012 | lower_temp_mask, RQFCR_PID_SAL, tab); | |
1013 | } | |
1014 | /* Destination address */ | |
1015 | if (!is_broadcast_ether_addr(mask->h_dest)) { | |
1016 | ||
1017 | /* Special for destination is limited broadcast */ | |
1018 | if ((is_broadcast_ether_addr(value->h_dest) | |
1019 | && is_zero_ether_addr(mask->h_dest))) { | |
1020 | gfar_set_parse_bits(RQFPR_EBC, RQFPR_EBC, tab); | |
1021 | } else { | |
1022 | ||
1023 | if (is_zero_ether_addr(mask->h_dest)) { | |
1024 | upper_temp_mask = 0xFFFFFFFF; | |
1025 | lower_temp_mask = 0xFFFFFFFF; | |
1026 | } else { | |
1027 | upper_temp_mask = mask->h_dest[0] << 16 | |
1028 | | mask->h_dest[1] << 8 | |
1029 | | mask->h_dest[2]; | |
1030 | lower_temp_mask = mask->h_dest[3] << 16 | |
1031 | | mask->h_dest[4] << 8 | |
1032 | | mask->h_dest[5]; | |
1033 | } | |
1034 | ||
1035 | /* Upper 24bit */ | |
1036 | gfar_set_attribute( | |
1037 | value->h_dest[0] << 16 | |
1038 | | value->h_dest[1] << 8 | |
1039 | | value->h_dest[2], | |
1040 | upper_temp_mask, RQFCR_PID_DAH, tab); | |
1041 | /* And the same for the lower part */ | |
1042 | gfar_set_attribute( | |
1043 | value->h_dest[3] << 16 | |
1044 | | value->h_dest[4] << 8 | |
1045 | | value->h_dest[5], | |
1046 | lower_temp_mask, RQFCR_PID_DAL, tab); | |
1047 | } | |
1048 | } | |
1049 | ||
1050 | gfar_set_attribute(value->h_proto, mask->h_proto, RQFCR_PID_ETY, tab); | |
1051 | ||
1052 | } | |
1053 | ||
1054 | /* Convert a rule to binary filter format of gianfar */ | |
1055 | static int gfar_convert_to_filer(struct ethtool_rx_flow_spec *rule, | |
1056 | struct filer_table *tab) | |
1057 | { | |
1058 | u32 vlan = 0, vlan_mask = 0; | |
1059 | u32 id = 0, id_mask = 0; | |
1060 | u32 cfi = 0, cfi_mask = 0; | |
1061 | u32 prio = 0, prio_mask = 0; | |
1062 | ||
1063 | u32 old_index = tab->index; | |
1064 | ||
1065 | /* Check if vlan is wanted */ | |
1066 | if ((rule->flow_type & FLOW_EXT) && (rule->m_ext.vlan_tci != 0xFFFF)) { | |
1067 | if (!rule->m_ext.vlan_tci) | |
1068 | rule->m_ext.vlan_tci = 0xFFFF; | |
1069 | ||
1070 | vlan = RQFPR_VLN; | |
1071 | vlan_mask = RQFPR_VLN; | |
1072 | ||
1073 | /* Separate the fields */ | |
380b153c SP |
1074 | id = rule->h_ext.vlan_tci & VLAN_VID_MASK; |
1075 | id_mask = rule->m_ext.vlan_tci & VLAN_VID_MASK; | |
1076 | cfi = rule->h_ext.vlan_tci & VLAN_CFI_MASK; | |
1077 | cfi_mask = rule->m_ext.vlan_tci & VLAN_CFI_MASK; | |
1078 | prio = (rule->h_ext.vlan_tci & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT; | |
1079 | prio_mask = (rule->m_ext.vlan_tci & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT; | |
1080 | ||
1081 | if (cfi == VLAN_TAG_PRESENT && cfi_mask == VLAN_TAG_PRESENT) { | |
4aa3a715 SP |
1082 | vlan |= RQFPR_CFI; |
1083 | vlan_mask |= RQFPR_CFI; | |
380b153c | 1084 | } else if (cfi != VLAN_TAG_PRESENT && cfi_mask == VLAN_TAG_PRESENT) { |
4aa3a715 SP |
1085 | vlan_mask |= RQFPR_CFI; |
1086 | } | |
1087 | } | |
1088 | ||
1089 | switch (rule->flow_type & ~FLOW_EXT) { | |
1090 | case TCP_V4_FLOW: | |
1091 | gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_TCP | vlan, | |
1092 | RQFPR_IPV4 | RQFPR_TCP | vlan_mask, tab); | |
1093 | gfar_set_basic_ip(&rule->h_u.tcp_ip4_spec, | |
1094 | &rule->m_u.tcp_ip4_spec, tab); | |
1095 | break; | |
1096 | case UDP_V4_FLOW: | |
1097 | gfar_set_parse_bits(RQFPR_IPV4 | RQFPR_UDP | vlan, | |
1098 | RQFPR_IPV4 | RQFPR_UDP | vlan_mask, tab); | |
1099 | gfar_set_basic_ip(&rule->h_u.udp_ip4_spec, | |
1100 | &rule->m_u.udp_ip4_spec, tab); | |
1101 | break; | |
1102 | case SCTP_V4_FLOW: | |
1103 | gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask, | |
1104 | tab); | |
1105 | gfar_set_attribute(132, 0, RQFCR_PID_L4P, tab); | |
1106 | gfar_set_basic_ip((struct ethtool_tcpip4_spec *) &rule->h_u, | |
1107 | (struct ethtool_tcpip4_spec *) &rule->m_u, tab); | |
1108 | break; | |
1109 | case IP_USER_FLOW: | |
1110 | gfar_set_parse_bits(RQFPR_IPV4 | vlan, RQFPR_IPV4 | vlan_mask, | |
1111 | tab); | |
1112 | gfar_set_user_ip((struct ethtool_usrip4_spec *) &rule->h_u, | |
1113 | (struct ethtool_usrip4_spec *) &rule->m_u, tab); | |
1114 | break; | |
1115 | case ETHER_FLOW: | |
1116 | if (vlan) | |
1117 | gfar_set_parse_bits(vlan, vlan_mask, tab); | |
1118 | gfar_set_ether((struct ethhdr *) &rule->h_u, | |
1119 | (struct ethhdr *) &rule->m_u, tab); | |
1120 | break; | |
1121 | default: | |
1122 | return -1; | |
1123 | } | |
1124 | ||
1125 | /* Set the vlan attributes in the end */ | |
1126 | if (vlan) { | |
1127 | gfar_set_attribute(id, id_mask, RQFCR_PID_VID, tab); | |
1128 | gfar_set_attribute(prio, prio_mask, RQFCR_PID_PRI, tab); | |
1129 | } | |
1130 | ||
1131 | /* If there has been nothing written till now, it must be a default */ | |
1132 | if (tab->index == old_index) { | |
1133 | gfar_set_mask(0xFFFFFFFF, tab); | |
1134 | tab->fe[tab->index].ctrl = 0x20; | |
1135 | tab->fe[tab->index].prop = 0x0; | |
1136 | tab->index++; | |
1137 | } | |
1138 | ||
1139 | /* Remove last AND */ | |
1140 | tab->fe[tab->index - 1].ctrl &= (~RQFCR_AND); | |
1141 | ||
1142 | /* Specify which queue to use or to drop */ | |
1143 | if (rule->ring_cookie == RX_CLS_FLOW_DISC) | |
1144 | tab->fe[tab->index - 1].ctrl |= RQFCR_RJE; | |
1145 | else | |
1146 | tab->fe[tab->index - 1].ctrl |= (rule->ring_cookie << 10); | |
1147 | ||
1148 | /* Only big enough entries can be clustered */ | |
1149 | if (tab->index > (old_index + 2)) { | |
1150 | tab->fe[old_index + 1].ctrl |= RQFCR_CLE; | |
1151 | tab->fe[tab->index - 1].ctrl |= RQFCR_CLE; | |
1152 | } | |
1153 | ||
1154 | /* In rare cases the cache can be full while there is free space in hw */ | |
1155 | if (tab->index > MAX_FILER_CACHE_IDX - 1) | |
1156 | return -EBUSY; | |
1157 | ||
1158 | return 0; | |
1159 | } | |
1160 | ||
1161 | /* Copy size filer entries */ | |
1162 | static void gfar_copy_filer_entries(struct gfar_filer_entry dst[0], | |
1163 | struct gfar_filer_entry src[0], s32 size) | |
1164 | { | |
1165 | while (size > 0) { | |
1166 | size--; | |
1167 | dst[size].ctrl = src[size].ctrl; | |
1168 | dst[size].prop = src[size].prop; | |
1169 | } | |
1170 | } | |
1171 | ||
1172 | /* Delete the contents of the filer-table between start and end | |
1173 | * and collapse them */ | |
1174 | static int gfar_trim_filer_entries(u32 begin, u32 end, struct filer_table *tab) | |
1175 | { | |
1176 | int length; | |
1177 | if (end > MAX_FILER_CACHE_IDX || end < begin) | |
1178 | return -EINVAL; | |
1179 | ||
1180 | end++; | |
1181 | length = end - begin; | |
1182 | ||
1183 | /* Copy */ | |
1184 | while (end < tab->index) { | |
1185 | tab->fe[begin].ctrl = tab->fe[end].ctrl; | |
1186 | tab->fe[begin++].prop = tab->fe[end++].prop; | |
1187 | ||
1188 | } | |
1189 | /* Fill up with don't cares */ | |
1190 | while (begin < tab->index) { | |
1191 | tab->fe[begin].ctrl = 0x60; | |
1192 | tab->fe[begin].prop = 0xFFFFFFFF; | |
1193 | begin++; | |
1194 | } | |
1195 | ||
1196 | tab->index -= length; | |
1197 | return 0; | |
1198 | } | |
1199 | ||
1200 | /* Make space on the wanted location */ | |
1201 | static int gfar_expand_filer_entries(u32 begin, u32 length, | |
1202 | struct filer_table *tab) | |
1203 | { | |
1204 | if (length == 0 || length + tab->index > MAX_FILER_CACHE_IDX || begin | |
1205 | > MAX_FILER_CACHE_IDX) | |
1206 | return -EINVAL; | |
1207 | ||
1208 | gfar_copy_filer_entries(&(tab->fe[begin + length]), &(tab->fe[begin]), | |
1209 | tab->index - length + 1); | |
1210 | ||
1211 | tab->index += length; | |
1212 | return 0; | |
1213 | } | |
1214 | ||
1215 | static int gfar_get_next_cluster_start(int start, struct filer_table *tab) | |
1216 | { | |
1217 | for (; (start < tab->index) && (start < MAX_FILER_CACHE_IDX - 1); start++) { | |
1218 | if ((tab->fe[start].ctrl & (RQFCR_AND | RQFCR_CLE)) | |
1219 | == (RQFCR_AND | RQFCR_CLE)) | |
1220 | return start; | |
1221 | } | |
1222 | return -1; | |
1223 | } | |
1224 | ||
1225 | static int gfar_get_next_cluster_end(int start, struct filer_table *tab) | |
1226 | { | |
1227 | for (; (start < tab->index) && (start < MAX_FILER_CACHE_IDX - 1); start++) { | |
1228 | if ((tab->fe[start].ctrl & (RQFCR_AND | RQFCR_CLE)) | |
1229 | == (RQFCR_CLE)) | |
1230 | return start; | |
1231 | } | |
1232 | return -1; | |
1233 | } | |
1234 | ||
1235 | /* | |
1236 | * Uses hardwares clustering option to reduce | |
1237 | * the number of filer table entries | |
1238 | */ | |
1239 | static void gfar_cluster_filer(struct filer_table *tab) | |
1240 | { | |
1241 | s32 i = -1, j, iend, jend; | |
1242 | ||
1243 | while ((i = gfar_get_next_cluster_start(++i, tab)) != -1) { | |
1244 | j = i; | |
1245 | while ((j = gfar_get_next_cluster_start(++j, tab)) != -1) { | |
1246 | /* | |
1247 | * The cluster entries self and the previous one | |
1248 | * (a mask) must be identical! | |
1249 | */ | |
1250 | if (tab->fe[i].ctrl != tab->fe[j].ctrl) | |
1251 | break; | |
1252 | if (tab->fe[i].prop != tab->fe[j].prop) | |
1253 | break; | |
1254 | if (tab->fe[i - 1].ctrl != tab->fe[j - 1].ctrl) | |
1255 | break; | |
1256 | if (tab->fe[i - 1].prop != tab->fe[j - 1].prop) | |
1257 | break; | |
1258 | iend = gfar_get_next_cluster_end(i, tab); | |
1259 | jend = gfar_get_next_cluster_end(j, tab); | |
1260 | if (jend == -1 || iend == -1) | |
1261 | break; | |
1262 | /* | |
1263 | * First we make some free space, where our cluster | |
1264 | * element should be. Then we copy it there and finally | |
1265 | * delete in from its old location. | |
1266 | */ | |
1267 | ||
1268 | if (gfar_expand_filer_entries(iend, (jend - j), tab) | |
1269 | == -EINVAL) | |
1270 | break; | |
1271 | ||
1272 | gfar_copy_filer_entries(&(tab->fe[iend + 1]), | |
1273 | &(tab->fe[jend + 1]), jend - j); | |
1274 | ||
1275 | if (gfar_trim_filer_entries(jend - 1, | |
1276 | jend + (jend - j), tab) == -EINVAL) | |
1277 | return; | |
1278 | ||
1279 | /* Mask out cluster bit */ | |
1280 | tab->fe[iend].ctrl &= ~(RQFCR_CLE); | |
1281 | } | |
1282 | } | |
1283 | } | |
1284 | ||
380b153c SP |
1285 | /* Swaps the masked bits of a1<>a2 and b1<>b2 */ |
1286 | static void gfar_swap_bits(struct gfar_filer_entry *a1, | |
4aa3a715 | 1287 | struct gfar_filer_entry *a2, struct gfar_filer_entry *b1, |
380b153c | 1288 | struct gfar_filer_entry *b2, u32 mask) |
4aa3a715 SP |
1289 | { |
1290 | u32 temp[4]; | |
380b153c SP |
1291 | temp[0] = a1->ctrl & mask; |
1292 | temp[1] = a2->ctrl & mask; | |
1293 | temp[2] = b1->ctrl & mask; | |
1294 | temp[3] = b2->ctrl & mask; | |
4aa3a715 | 1295 | |
380b153c SP |
1296 | a1->ctrl &= ~mask; |
1297 | a2->ctrl &= ~mask; | |
1298 | b1->ctrl &= ~mask; | |
1299 | b2->ctrl &= ~mask; | |
4aa3a715 SP |
1300 | |
1301 | a1->ctrl |= temp[1]; | |
1302 | a2->ctrl |= temp[0]; | |
1303 | b1->ctrl |= temp[3]; | |
1304 | b2->ctrl |= temp[2]; | |
1305 | } | |
1306 | ||
1307 | /* | |
1308 | * Generate a list consisting of masks values with their start and | |
1309 | * end of validity and block as indicator for parts belonging | |
1310 | * together (glued by ANDs) in mask_table | |
1311 | */ | |
1312 | static u32 gfar_generate_mask_table(struct gfar_mask_entry *mask_table, | |
1313 | struct filer_table *tab) | |
1314 | { | |
1315 | u32 i, and_index = 0, block_index = 1; | |
1316 | ||
1317 | for (i = 0; i < tab->index; i++) { | |
1318 | ||
1319 | /* LSByte of control = 0 sets a mask */ | |
1320 | if (!(tab->fe[i].ctrl & 0xF)) { | |
1321 | mask_table[and_index].mask = tab->fe[i].prop; | |
1322 | mask_table[and_index].start = i; | |
1323 | mask_table[and_index].block = block_index; | |
1324 | if (and_index >= 1) | |
1325 | mask_table[and_index - 1].end = i - 1; | |
1326 | and_index++; | |
1327 | } | |
380b153c | 1328 | /* cluster starts and ends will be separated because they should |
4aa3a715 SP |
1329 | * hold their position */ |
1330 | if (tab->fe[i].ctrl & RQFCR_CLE) | |
1331 | block_index++; | |
1332 | /* A not set AND indicates the end of a depended block */ | |
1333 | if (!(tab->fe[i].ctrl & RQFCR_AND)) | |
1334 | block_index++; | |
1335 | ||
1336 | } | |
1337 | ||
1338 | mask_table[and_index - 1].end = i - 1; | |
1339 | ||
1340 | return and_index; | |
1341 | } | |
1342 | ||
1343 | /* | |
1344 | * Sorts the entries of mask_table by the values of the masks. | |
1345 | * Important: The 0xFF80 flags of the first and last entry of a | |
1346 | * block must hold their position (which queue, CLusterEnable, ReJEct, | |
1347 | * AND) | |
1348 | */ | |
1349 | static void gfar_sort_mask_table(struct gfar_mask_entry *mask_table, | |
1350 | struct filer_table *temp_table, u32 and_index) | |
1351 | { | |
1352 | /* Pointer to compare function (_asc or _desc) */ | |
1353 | int (*gfar_comp)(const void *, const void *); | |
1354 | ||
1355 | u32 i, size = 0, start = 0, prev = 1; | |
1356 | u32 old_first, old_last, new_first, new_last; | |
1357 | ||
1358 | gfar_comp = &gfar_comp_desc; | |
1359 | ||
1360 | for (i = 0; i < and_index; i++) { | |
1361 | ||
1362 | if (prev != mask_table[i].block) { | |
1363 | old_first = mask_table[start].start + 1; | |
1364 | old_last = mask_table[i - 1].end; | |
1365 | sort(mask_table + start, size, | |
1366 | sizeof(struct gfar_mask_entry), | |
1367 | gfar_comp, &gfar_swap); | |
1368 | ||
1369 | /* Toggle order for every block. This makes the | |
1370 | * thing more efficient! */ | |
1371 | if (gfar_comp == gfar_comp_desc) | |
1372 | gfar_comp = &gfar_comp_asc; | |
1373 | else | |
1374 | gfar_comp = &gfar_comp_desc; | |
1375 | ||
1376 | new_first = mask_table[start].start + 1; | |
1377 | new_last = mask_table[i - 1].end; | |
1378 | ||
380b153c | 1379 | gfar_swap_bits(&temp_table->fe[new_first], |
4aa3a715 SP |
1380 | &temp_table->fe[old_first], |
1381 | &temp_table->fe[new_last], | |
380b153c SP |
1382 | &temp_table->fe[old_last], |
1383 | RQFCR_QUEUE | RQFCR_CLE | | |
1384 | RQFCR_RJE | RQFCR_AND | |
1385 | ); | |
4aa3a715 SP |
1386 | |
1387 | start = i; | |
1388 | size = 0; | |
1389 | } | |
1390 | size++; | |
1391 | prev = mask_table[i].block; | |
1392 | } | |
1393 | ||
1394 | } | |
1395 | ||
1396 | /* | |
1397 | * Reduces the number of masks needed in the filer table to save entries | |
1398 | * This is done by sorting the masks of a depended block. A depended block is | |
1399 | * identified by gluing ANDs or CLE. The sorting order toggles after every | |
1400 | * block. Of course entries in scope of a mask must change their location with | |
1401 | * it. | |
1402 | */ | |
1403 | static int gfar_optimize_filer_masks(struct filer_table *tab) | |
1404 | { | |
1405 | struct filer_table *temp_table; | |
1406 | struct gfar_mask_entry *mask_table; | |
1407 | ||
1408 | u32 and_index = 0, previous_mask = 0, i = 0, j = 0, size = 0; | |
1409 | s32 ret = 0; | |
1410 | ||
1411 | /* We need a copy of the filer table because | |
1412 | * we want to change its order */ | |
b8ffdbd0 | 1413 | temp_table = kmemdup(tab, sizeof(*temp_table), GFP_KERNEL); |
4aa3a715 SP |
1414 | if (temp_table == NULL) |
1415 | return -ENOMEM; | |
4aa3a715 SP |
1416 | |
1417 | mask_table = kcalloc(MAX_FILER_CACHE_IDX / 2 + 1, | |
1418 | sizeof(struct gfar_mask_entry), GFP_KERNEL); | |
1419 | ||
1420 | if (mask_table == NULL) { | |
1421 | ret = -ENOMEM; | |
1422 | goto end; | |
1423 | } | |
1424 | ||
1425 | and_index = gfar_generate_mask_table(mask_table, tab); | |
1426 | ||
1427 | gfar_sort_mask_table(mask_table, temp_table, and_index); | |
1428 | ||
1429 | /* Now we can copy the data from our duplicated filer table to | |
1430 | * the real one in the order the mask table says */ | |
1431 | for (i = 0; i < and_index; i++) { | |
1432 | size = mask_table[i].end - mask_table[i].start + 1; | |
1433 | gfar_copy_filer_entries(&(tab->fe[j]), | |
1434 | &(temp_table->fe[mask_table[i].start]), size); | |
1435 | j += size; | |
1436 | } | |
1437 | ||
1438 | /* And finally we just have to check for duplicated masks and drop the | |
1439 | * second ones */ | |
1440 | for (i = 0; i < tab->index && i < MAX_FILER_CACHE_IDX; i++) { | |
1441 | if (tab->fe[i].ctrl == 0x80) { | |
1442 | previous_mask = i++; | |
1443 | break; | |
1444 | } | |
1445 | } | |
1446 | for (; i < tab->index && i < MAX_FILER_CACHE_IDX; i++) { | |
1447 | if (tab->fe[i].ctrl == 0x80) { | |
1448 | if (tab->fe[i].prop == tab->fe[previous_mask].prop) { | |
1449 | /* Two identical ones found! | |
1450 | * So drop the second one! */ | |
1451 | gfar_trim_filer_entries(i, i, tab); | |
1452 | } else | |
1453 | /* Not identical! */ | |
1454 | previous_mask = i; | |
1455 | } | |
1456 | } | |
1457 | ||
1458 | kfree(mask_table); | |
1459 | end: kfree(temp_table); | |
1460 | return ret; | |
1461 | } | |
1462 | ||
1463 | /* Write the bit-pattern from software's buffer to hardware registers */ | |
1464 | static int gfar_write_filer_table(struct gfar_private *priv, | |
1465 | struct filer_table *tab) | |
1466 | { | |
1467 | u32 i = 0; | |
1468 | if (tab->index > MAX_FILER_IDX - 1) | |
1469 | return -EBUSY; | |
1470 | ||
1471 | /* Avoid inconsistent filer table to be processed */ | |
1472 | lock_rx_qs(priv); | |
1473 | ||
1474 | /* Fill regular entries */ | |
1475 | for (; i < MAX_FILER_IDX - 1 && (tab->fe[i].ctrl | tab->fe[i].ctrl); i++) | |
1476 | gfar_write_filer(priv, i, tab->fe[i].ctrl, tab->fe[i].prop); | |
1477 | /* Fill the rest with fall-troughs */ | |
1478 | for (; i < MAX_FILER_IDX - 1; i++) | |
1479 | gfar_write_filer(priv, i, 0x60, 0xFFFFFFFF); | |
1480 | /* Last entry must be default accept | |
1481 | * because that's what people expect */ | |
1482 | gfar_write_filer(priv, i, 0x20, 0x0); | |
1483 | ||
1484 | unlock_rx_qs(priv); | |
1485 | ||
1486 | return 0; | |
1487 | } | |
1488 | ||
1489 | static int gfar_check_capability(struct ethtool_rx_flow_spec *flow, | |
1490 | struct gfar_private *priv) | |
1491 | { | |
1492 | ||
1493 | if (flow->flow_type & FLOW_EXT) { | |
1494 | if (~flow->m_ext.data[0] || ~flow->m_ext.data[1]) | |
1495 | netdev_warn(priv->ndev, | |
1496 | "User-specific data not supported!\n"); | |
1497 | if (~flow->m_ext.vlan_etype) | |
1498 | netdev_warn(priv->ndev, | |
1499 | "VLAN-etype not supported!\n"); | |
1500 | } | |
1501 | if (flow->flow_type == IP_USER_FLOW) | |
1502 | if (flow->h_u.usr_ip4_spec.ip_ver != ETH_RX_NFC_IP4) | |
1503 | netdev_warn(priv->ndev, | |
1504 | "IP-Version differing from IPv4 not supported!\n"); | |
1505 | ||
1506 | return 0; | |
1507 | } | |
1508 | ||
1509 | static int gfar_process_filer_changes(struct gfar_private *priv) | |
1510 | { | |
1511 | struct ethtool_flow_spec_container *j; | |
1512 | struct filer_table *tab; | |
1513 | s32 i = 0; | |
1514 | s32 ret = 0; | |
1515 | ||
1516 | /* So index is set to zero, too! */ | |
1517 | tab = kzalloc(sizeof(*tab), GFP_KERNEL); | |
1518 | if (tab == NULL) | |
1519 | return -ENOMEM; | |
1520 | ||
1521 | /* Now convert the existing filer data from flow_spec into | |
1522 | * filer tables binary format */ | |
1523 | list_for_each_entry(j, &priv->rx_list.list, list) { | |
1524 | ret = gfar_convert_to_filer(&j->fs, tab); | |
1525 | if (ret == -EBUSY) { | |
1526 | netdev_err(priv->ndev, "Rule not added: No free space!\n"); | |
1527 | goto end; | |
1528 | } | |
1529 | if (ret == -1) { | |
1530 | netdev_err(priv->ndev, "Rule not added: Unsupported Flow-type!\n"); | |
1531 | goto end; | |
1532 | } | |
1533 | } | |
1534 | ||
1535 | i = tab->index; | |
1536 | ||
1537 | /* Optimizations to save entries */ | |
1538 | gfar_cluster_filer(tab); | |
1539 | gfar_optimize_filer_masks(tab); | |
1540 | ||
1541 | pr_debug("\n\tSummary:\n" | |
1542 | "\tData on hardware: %d\n" | |
1543 | "\tCompression rate: %d%%\n", | |
1544 | tab->index, 100 - (100 * tab->index) / i); | |
1545 | ||
1546 | /* Write everything to hardware */ | |
1547 | ret = gfar_write_filer_table(priv, tab); | |
1548 | if (ret == -EBUSY) { | |
1549 | netdev_err(priv->ndev, "Rule not added: No free space!\n"); | |
1550 | goto end; | |
1551 | } | |
1552 | ||
1553 | end: kfree(tab); | |
1554 | return ret; | |
1555 | } | |
1556 | ||
1557 | static void gfar_invert_masks(struct ethtool_rx_flow_spec *flow) | |
1558 | { | |
1559 | u32 i = 0; | |
1560 | ||
1561 | for (i = 0; i < sizeof(flow->m_u); i++) | |
1562 | flow->m_u.hdata[i] ^= 0xFF; | |
1563 | ||
1564 | flow->m_ext.vlan_etype ^= 0xFFFF; | |
1565 | flow->m_ext.vlan_tci ^= 0xFFFF; | |
1566 | flow->m_ext.data[0] ^= ~0; | |
1567 | flow->m_ext.data[1] ^= ~0; | |
1568 | } | |
1569 | ||
1570 | static int gfar_add_cls(struct gfar_private *priv, | |
1571 | struct ethtool_rx_flow_spec *flow) | |
1572 | { | |
1573 | struct ethtool_flow_spec_container *temp, *comp; | |
1574 | int ret = 0; | |
1575 | ||
1576 | temp = kmalloc(sizeof(*temp), GFP_KERNEL); | |
1577 | if (temp == NULL) | |
1578 | return -ENOMEM; | |
1579 | memcpy(&temp->fs, flow, sizeof(temp->fs)); | |
1580 | ||
1581 | gfar_invert_masks(&temp->fs); | |
1582 | ret = gfar_check_capability(&temp->fs, priv); | |
1583 | if (ret) | |
1584 | goto clean_mem; | |
1585 | /* Link in the new element at the right @location */ | |
1586 | if (list_empty(&priv->rx_list.list)) { | |
1587 | ret = gfar_check_filer_hardware(priv); | |
1588 | if (ret != 0) | |
1589 | goto clean_mem; | |
1590 | list_add(&temp->list, &priv->rx_list.list); | |
1591 | goto process; | |
1592 | } else { | |
1593 | ||
1594 | list_for_each_entry(comp, &priv->rx_list.list, list) { | |
1595 | if (comp->fs.location > flow->location) { | |
1596 | list_add_tail(&temp->list, &comp->list); | |
1597 | goto process; | |
1598 | } | |
1599 | if (comp->fs.location == flow->location) { | |
1600 | netdev_err(priv->ndev, | |
1601 | "Rule not added: ID %d not free!\n", | |
1602 | flow->location); | |
1603 | ret = -EBUSY; | |
1604 | goto clean_mem; | |
1605 | } | |
1606 | } | |
1607 | list_add_tail(&temp->list, &priv->rx_list.list); | |
1608 | } | |
1609 | ||
1610 | process: | |
1611 | ret = gfar_process_filer_changes(priv); | |
1612 | if (ret) | |
1613 | goto clean_list; | |
1614 | priv->rx_list.count++; | |
1615 | return ret; | |
1616 | ||
1617 | clean_list: | |
1618 | list_del(&temp->list); | |
1619 | clean_mem: | |
1620 | kfree(temp); | |
1621 | return ret; | |
1622 | } | |
1623 | ||
1624 | static int gfar_del_cls(struct gfar_private *priv, u32 loc) | |
1625 | { | |
1626 | struct ethtool_flow_spec_container *comp; | |
1627 | u32 ret = -EINVAL; | |
1628 | ||
1629 | if (list_empty(&priv->rx_list.list)) | |
1630 | return ret; | |
1631 | ||
1632 | list_for_each_entry(comp, &priv->rx_list.list, list) { | |
1633 | if (comp->fs.location == loc) { | |
1634 | list_del(&comp->list); | |
1635 | kfree(comp); | |
1636 | priv->rx_list.count--; | |
1637 | gfar_process_filer_changes(priv); | |
1638 | ret = 0; | |
1639 | break; | |
1640 | } | |
1641 | } | |
1642 | ||
1643 | return ret; | |
1644 | ||
1645 | } | |
1646 | ||
1647 | static int gfar_get_cls(struct gfar_private *priv, struct ethtool_rxnfc *cmd) | |
1648 | { | |
1649 | struct ethtool_flow_spec_container *comp; | |
1650 | u32 ret = -EINVAL; | |
1651 | ||
1652 | list_for_each_entry(comp, &priv->rx_list.list, list) { | |
1653 | if (comp->fs.location == cmd->fs.location) { | |
1654 | memcpy(&cmd->fs, &comp->fs, sizeof(cmd->fs)); | |
1655 | gfar_invert_masks(&cmd->fs); | |
1656 | ret = 0; | |
1657 | break; | |
1658 | } | |
1659 | } | |
1660 | ||
1661 | return ret; | |
1662 | } | |
1663 | ||
1664 | static int gfar_get_cls_all(struct gfar_private *priv, | |
1665 | struct ethtool_rxnfc *cmd, u32 *rule_locs) | |
1666 | { | |
1667 | struct ethtool_flow_spec_container *comp; | |
1668 | u32 i = 0; | |
1669 | ||
1670 | list_for_each_entry(comp, &priv->rx_list.list, list) { | |
710778ff BH |
1671 | if (i == cmd->rule_cnt) |
1672 | return -EMSGSIZE; | |
1673 | rule_locs[i] = comp->fs.location; | |
1674 | i++; | |
4aa3a715 SP |
1675 | } |
1676 | ||
1677 | cmd->data = MAX_FILER_IDX; | |
473e64ee | 1678 | cmd->rule_cnt = i; |
4aa3a715 SP |
1679 | |
1680 | return 0; | |
1681 | } | |
1682 | ||
7a8b3372 SG |
1683 | static int gfar_set_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd) |
1684 | { | |
1685 | struct gfar_private *priv = netdev_priv(dev); | |
1686 | int ret = 0; | |
1687 | ||
4aa3a715 SP |
1688 | mutex_lock(&priv->rx_queue_access); |
1689 | ||
1690 | switch (cmd->cmd) { | |
7a8b3372 SG |
1691 | case ETHTOOL_SRXFH: |
1692 | ret = gfar_set_hash_opts(priv, cmd); | |
1693 | break; | |
4aa3a715 | 1694 | case ETHTOOL_SRXCLSRLINS: |
3a73e49c BH |
1695 | if ((cmd->fs.ring_cookie != RX_CLS_FLOW_DISC && |
1696 | cmd->fs.ring_cookie >= priv->num_rx_queues) || | |
1697 | cmd->fs.location >= MAX_FILER_IDX) { | |
4aa3a715 SP |
1698 | ret = -EINVAL; |
1699 | break; | |
1700 | } | |
1701 | ret = gfar_add_cls(priv, &cmd->fs); | |
1702 | break; | |
1703 | case ETHTOOL_SRXCLSRLDEL: | |
1704 | ret = gfar_del_cls(priv, cmd->fs.location); | |
1705 | break; | |
7a8b3372 SG |
1706 | default: |
1707 | ret = -EINVAL; | |
1708 | } | |
1709 | ||
4aa3a715 SP |
1710 | mutex_unlock(&priv->rx_queue_access); |
1711 | ||
1712 | return ret; | |
1713 | } | |
1714 | ||
1715 | static int gfar_get_nfc(struct net_device *dev, struct ethtool_rxnfc *cmd, | |
815c7db5 | 1716 | u32 *rule_locs) |
4aa3a715 SP |
1717 | { |
1718 | struct gfar_private *priv = netdev_priv(dev); | |
1719 | int ret = 0; | |
1720 | ||
1721 | switch (cmd->cmd) { | |
1722 | case ETHTOOL_GRXRINGS: | |
1723 | cmd->data = priv->num_rx_queues; | |
1724 | break; | |
1725 | case ETHTOOL_GRXCLSRLCNT: | |
1726 | cmd->rule_cnt = priv->rx_list.count; | |
1727 | break; | |
1728 | case ETHTOOL_GRXCLSRULE: | |
1729 | ret = gfar_get_cls(priv, cmd); | |
1730 | break; | |
1731 | case ETHTOOL_GRXCLSRLALL: | |
815c7db5 | 1732 | ret = gfar_get_cls_all(priv, cmd, rule_locs); |
4aa3a715 SP |
1733 | break; |
1734 | default: | |
1735 | ret = -EINVAL; | |
1736 | break; | |
1737 | } | |
1738 | ||
7a8b3372 SG |
1739 | return ret; |
1740 | } | |
1741 | ||
7282d491 | 1742 | const struct ethtool_ops gfar_ethtool_ops = { |
1da177e4 | 1743 | .get_settings = gfar_gsettings, |
bb40dcbb | 1744 | .set_settings = gfar_ssettings, |
1da177e4 LT |
1745 | .get_drvinfo = gfar_gdrvinfo, |
1746 | .get_regs_len = gfar_reglen, | |
1747 | .get_regs = gfar_get_regs, | |
1748 | .get_link = ethtool_op_get_link, | |
1749 | .get_coalesce = gfar_gcoalesce, | |
1750 | .set_coalesce = gfar_scoalesce, | |
1751 | .get_ringparam = gfar_gringparam, | |
1752 | .set_ringparam = gfar_sringparam, | |
1753 | .get_strings = gfar_gstrings, | |
b9f2c044 | 1754 | .get_sset_count = gfar_sset_count, |
1da177e4 | 1755 | .get_ethtool_stats = gfar_fill_stats, |
0bbaf069 KG |
1756 | .get_msglevel = gfar_get_msglevel, |
1757 | .set_msglevel = gfar_set_msglevel, | |
d87eb127 SW |
1758 | #ifdef CONFIG_PM |
1759 | .get_wol = gfar_get_wol, | |
1760 | .set_wol = gfar_set_wol, | |
1761 | #endif | |
7a8b3372 | 1762 | .set_rxnfc = gfar_set_nfc, |
4aa3a715 | 1763 | .get_rxnfc = gfar_get_nfc, |
1da177e4 | 1764 | }; |