2 * Copyright (c) 2005-2007 Chelsio, Inc. All rights reserved.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
36 * # of exact address filters. The first one is used for the station address,
37 * the rest are available for multicast addresses.
39 #define EXACT_ADDR_FILTERS 8
41 static inline int macidx(const struct cmac *mac)
43 return mac->offset / (XGMAC0_1_BASE_ADDR - XGMAC0_0_BASE_ADDR);
46 static void xaui_serdes_reset(struct cmac *mac)
48 static const unsigned int clear[] = {
49 F_PWRDN0 | F_PWRDN1, F_RESETPLL01, F_RESET0 | F_RESET1,
50 F_PWRDN2 | F_PWRDN3, F_RESETPLL23, F_RESET2 | F_RESET3
54 struct adapter *adap = mac->adapter;
55 u32 ctrl = A_XGM_SERDES_CTRL0 + mac->offset;
57 t3_write_reg(adap, ctrl, adap->params.vpd.xauicfg[macidx(mac)] |
58 F_RESET3 | F_RESET2 | F_RESET1 | F_RESET0 |
59 F_PWRDN3 | F_PWRDN2 | F_PWRDN1 | F_PWRDN0 |
60 F_RESETPLL23 | F_RESETPLL01);
61 t3_read_reg(adap, ctrl);
64 for (i = 0; i < ARRAY_SIZE(clear); i++) {
65 t3_set_reg_field(adap, ctrl, clear[i], 0);
70 void t3b_pcs_reset(struct cmac *mac)
72 t3_set_reg_field(mac->adapter, A_XGM_RESET_CTRL + mac->offset,
75 t3_set_reg_field(mac->adapter, A_XGM_RESET_CTRL + mac->offset, 0,
79 int t3_mac_reset(struct cmac *mac)
81 static const struct addr_val_pair mac_reset_avp[] = {
84 {A_XGM_RX_CFG, F_DISPAUSEFRAMES | F_EN1536BFRAMES |
85 F_RMFCS | F_ENJUMBO | F_ENHASHMCAST},
86 {A_XGM_RX_HASH_LOW, 0},
87 {A_XGM_RX_HASH_HIGH, 0},
88 {A_XGM_RX_EXACT_MATCH_LOW_1, 0},
89 {A_XGM_RX_EXACT_MATCH_LOW_2, 0},
90 {A_XGM_RX_EXACT_MATCH_LOW_3, 0},
91 {A_XGM_RX_EXACT_MATCH_LOW_4, 0},
92 {A_XGM_RX_EXACT_MATCH_LOW_5, 0},
93 {A_XGM_RX_EXACT_MATCH_LOW_6, 0},
94 {A_XGM_RX_EXACT_MATCH_LOW_7, 0},
95 {A_XGM_RX_EXACT_MATCH_LOW_8, 0},
96 {A_XGM_STAT_CTRL, F_CLRSTATS}
99 struct adapter *adap = mac->adapter;
100 unsigned int oft = mac->offset;
102 t3_write_reg(adap, A_XGM_RESET_CTRL + oft, F_MAC_RESET_);
103 t3_read_reg(adap, A_XGM_RESET_CTRL + oft); /* flush */
105 t3_write_regs(adap, mac_reset_avp, ARRAY_SIZE(mac_reset_avp), oft);
106 t3_set_reg_field(adap, A_XGM_RXFIFO_CFG + oft,
107 F_RXSTRFRWRD | F_DISERRFRAMES,
108 uses_xaui(adap) ? 0 : F_RXSTRFRWRD);
110 if (uses_xaui(adap)) {
111 if (adap->params.rev == 0) {
112 t3_set_reg_field(adap, A_XGM_SERDES_CTRL + oft, 0,
113 F_RXENABLE | F_TXENABLE);
114 if (t3_wait_op_done(adap, A_XGM_SERDES_STATUS1 + oft,
115 F_CMULOCK, 1, 5, 2)) {
117 "MAC %d XAUI SERDES CMU lock failed\n",
121 t3_set_reg_field(adap, A_XGM_SERDES_CTRL + oft, 0,
124 xaui_serdes_reset(mac);
127 if (adap->params.rev > 0)
128 t3_write_reg(adap, A_XGM_PAUSE_TIMER + oft, 0xf000);
133 else if (uses_xaui(adap))
134 val |= F_PCS_RESET_ | F_XG2G_RESET_;
136 val |= F_RGMII_RESET_ | F_XG2G_RESET_;
137 t3_write_reg(adap, A_XGM_RESET_CTRL + oft, val);
138 t3_read_reg(adap, A_XGM_RESET_CTRL + oft); /* flush */
139 if ((val & F_PCS_RESET_) && adap->params.rev) {
144 memset(&mac->stats, 0, sizeof(mac->stats));
149 * Set the exact match register 'idx' to recognize the given Ethernet address.
151 static void set_addr_filter(struct cmac *mac, int idx, const u8 * addr)
153 u32 addr_lo, addr_hi;
154 unsigned int oft = mac->offset + idx * 8;
156 addr_lo = (addr[3] << 24) | (addr[2] << 16) | (addr[1] << 8) | addr[0];
157 addr_hi = (addr[5] << 8) | addr[4];
159 t3_write_reg(mac->adapter, A_XGM_RX_EXACT_MATCH_LOW_1 + oft, addr_lo);
160 t3_write_reg(mac->adapter, A_XGM_RX_EXACT_MATCH_HIGH_1 + oft, addr_hi);
163 /* Set one of the station's unicast MAC addresses. */
164 int t3_mac_set_address(struct cmac *mac, unsigned int idx, u8 addr[6])
166 if (idx >= mac->nucast)
168 set_addr_filter(mac, idx, addr);
173 * Specify the number of exact address filters that should be reserved for
174 * unicast addresses. Caller should reload the unicast and multicast addresses
175 * after calling this.
177 int t3_mac_set_num_ucast(struct cmac *mac, int n)
179 if (n > EXACT_ADDR_FILTERS)
185 /* Calculate the RX hash filter index of an Ethernet address */
186 static int hash_hw_addr(const u8 * addr)
188 int hash = 0, octet, bit, i = 0, c;
190 for (octet = 0; octet < 6; ++octet)
191 for (c = addr[octet], bit = 0; bit < 8; c >>= 1, ++bit) {
192 hash ^= (c & 1) << i;
199 int t3_mac_set_rx_mode(struct cmac *mac, struct t3_rx_mode *rm)
201 u32 val, hash_lo, hash_hi;
202 struct adapter *adap = mac->adapter;
203 unsigned int oft = mac->offset;
205 val = t3_read_reg(adap, A_XGM_RX_CFG + oft) & ~F_COPYALLFRAMES;
206 if (rm->dev->flags & IFF_PROMISC)
207 val |= F_COPYALLFRAMES;
208 t3_write_reg(adap, A_XGM_RX_CFG + oft, val);
210 if (rm->dev->flags & IFF_ALLMULTI)
211 hash_lo = hash_hi = 0xffffffff;
214 int exact_addr_idx = mac->nucast;
216 hash_lo = hash_hi = 0;
217 while ((addr = t3_get_next_mcaddr(rm)))
218 if (exact_addr_idx < EXACT_ADDR_FILTERS)
219 set_addr_filter(mac, exact_addr_idx++, addr);
221 int hash = hash_hw_addr(addr);
224 hash_lo |= (1 << hash);
226 hash_hi |= (1 << (hash - 32));
230 t3_write_reg(adap, A_XGM_RX_HASH_LOW + oft, hash_lo);
231 t3_write_reg(adap, A_XGM_RX_HASH_HIGH + oft, hash_hi);
235 int t3_mac_set_mtu(struct cmac *mac, unsigned int mtu)
238 unsigned int thres, v;
239 struct adapter *adap = mac->adapter;
242 * MAX_FRAME_SIZE inludes header + FCS, mtu doesn't. The HW max
243 * packet size register includes header, but not FCS.
246 if (mtu > MAX_FRAME_SIZE - 4)
248 t3_write_reg(adap, A_XGM_RX_MAX_PKT_SIZE + mac->offset, mtu);
251 * Adjust the PAUSE frame watermarks. We always set the LWM, and the
252 * HWM only if flow-control is enabled.
254 hwm = max(MAC_RXFIFO_SIZE - 3 * mtu, MAC_RXFIFO_SIZE / 2U);
255 hwm = min(hwm, 3 * MAC_RXFIFO_SIZE / 4 + 1024);
257 v = t3_read_reg(adap, A_XGM_RXFIFO_CFG + mac->offset);
258 v &= ~V_RXFIFOPAUSELWM(M_RXFIFOPAUSELWM);
259 v |= V_RXFIFOPAUSELWM(lwm / 8);
260 if (G_RXFIFOPAUSEHWM(v))
261 v = (v & ~V_RXFIFOPAUSEHWM(M_RXFIFOPAUSEHWM)) |
262 V_RXFIFOPAUSEHWM(hwm / 8);
263 t3_write_reg(adap, A_XGM_RXFIFO_CFG + mac->offset, v);
265 /* Adjust the TX FIFO threshold based on the MTU */
266 thres = (adap->params.vpd.cclk * 1000) / 15625;
267 thres = (thres * mtu) / 1000;
270 thres = mtu > thres ? (mtu - thres + 7) / 8 : 0;
271 thres = max(thres, 8U); /* need at least 8 */
272 t3_set_reg_field(adap, A_XGM_TXFIFO_CFG + mac->offset,
273 V_TXFIFOTHRESH(M_TXFIFOTHRESH), V_TXFIFOTHRESH(thres));
277 int t3_mac_set_speed_duplex_fc(struct cmac *mac, int speed, int duplex, int fc)
280 struct adapter *adap = mac->adapter;
281 unsigned int oft = mac->offset;
283 if (duplex >= 0 && duplex != DUPLEX_FULL)
286 if (speed == SPEED_10)
287 val = V_PORTSPEED(0);
288 else if (speed == SPEED_100)
289 val = V_PORTSPEED(1);
290 else if (speed == SPEED_1000)
291 val = V_PORTSPEED(2);
292 else if (speed == SPEED_10000)
293 val = V_PORTSPEED(3);
297 t3_set_reg_field(adap, A_XGM_PORT_CFG + oft,
298 V_PORTSPEED(M_PORTSPEED), val);
301 val = t3_read_reg(adap, A_XGM_RXFIFO_CFG + oft);
302 val &= ~V_RXFIFOPAUSEHWM(M_RXFIFOPAUSEHWM);
304 val |= V_RXFIFOPAUSEHWM(G_RXFIFOPAUSELWM(val) + 128); /* +1KB */
305 t3_write_reg(adap, A_XGM_RXFIFO_CFG + oft, val);
307 t3_set_reg_field(adap, A_XGM_TX_CFG + oft, F_TXPAUSEEN,
308 (fc & PAUSE_RX) ? F_TXPAUSEEN : 0);
312 int t3_mac_enable(struct cmac *mac, int which)
314 int idx = macidx(mac);
315 struct adapter *adap = mac->adapter;
316 unsigned int oft = mac->offset;
318 if (which & MAC_DIRECTION_TX) {
319 t3_write_reg(adap, A_XGM_TX_CTRL + oft, F_TXEN);
320 t3_write_reg(adap, A_TP_PIO_ADDR, A_TP_TX_DROP_CFG_CH0 + idx);
321 t3_write_reg(adap, A_TP_PIO_DATA, 0xbf000001);
322 t3_write_reg(adap, A_TP_PIO_ADDR, A_TP_TX_DROP_MODE);
323 t3_set_reg_field(adap, A_TP_PIO_DATA, 1 << idx, 1 << idx);
325 if (which & MAC_DIRECTION_RX)
326 t3_write_reg(adap, A_XGM_RX_CTRL + oft, F_RXEN);
330 int t3_mac_disable(struct cmac *mac, int which)
332 int idx = macidx(mac);
333 struct adapter *adap = mac->adapter;
335 if (which & MAC_DIRECTION_TX) {
336 t3_write_reg(adap, A_XGM_TX_CTRL + mac->offset, 0);
337 t3_write_reg(adap, A_TP_PIO_ADDR, A_TP_TX_DROP_CFG_CH0 + idx);
338 t3_write_reg(adap, A_TP_PIO_DATA, 0xc000001f);
339 t3_write_reg(adap, A_TP_PIO_ADDR, A_TP_TX_DROP_MODE);
340 t3_set_reg_field(adap, A_TP_PIO_DATA, 1 << idx, 0);
342 if (which & MAC_DIRECTION_RX)
343 t3_write_reg(adap, A_XGM_RX_CTRL + mac->offset, 0);
348 * This function is called periodically to accumulate the current values of the
349 * RMON counters into the port statistics. Since the packet counters are only
350 * 32 bits they can overflow in ~286 secs at 10G, so the function should be
351 * called more frequently than that. The byte counters are 45-bit wide, they
352 * would overflow in ~7.8 hours.
354 const struct mac_stats *t3_mac_update_stats(struct cmac *mac)
356 #define RMON_READ(mac, addr) t3_read_reg(mac->adapter, addr + mac->offset)
357 #define RMON_UPDATE(mac, name, reg) \
358 (mac)->stats.name += (u64)RMON_READ(mac, A_XGM_STAT_##reg)
359 #define RMON_UPDATE64(mac, name, reg_lo, reg_hi) \
360 (mac)->stats.name += RMON_READ(mac, A_XGM_STAT_##reg_lo) + \
361 ((u64)RMON_READ(mac, A_XGM_STAT_##reg_hi) << 32)
365 RMON_UPDATE64(mac, rx_octets, RX_BYTES_LOW, RX_BYTES_HIGH);
366 RMON_UPDATE64(mac, rx_frames, RX_FRAMES_LOW, RX_FRAMES_HIGH);
367 RMON_UPDATE(mac, rx_mcast_frames, RX_MCAST_FRAMES);
368 RMON_UPDATE(mac, rx_bcast_frames, RX_BCAST_FRAMES);
369 RMON_UPDATE(mac, rx_fcs_errs, RX_CRC_ERR_FRAMES);
370 RMON_UPDATE(mac, rx_pause, RX_PAUSE_FRAMES);
371 RMON_UPDATE(mac, rx_jabber, RX_JABBER_FRAMES);
372 RMON_UPDATE(mac, rx_short, RX_SHORT_FRAMES);
373 RMON_UPDATE(mac, rx_symbol_errs, RX_SYM_CODE_ERR_FRAMES);
375 RMON_UPDATE(mac, rx_too_long, RX_OVERSIZE_FRAMES);
376 mac->stats.rx_too_long += RMON_READ(mac, A_XGM_RX_MAX_PKT_SIZE_ERR_CNT);
378 RMON_UPDATE(mac, rx_frames_64, RX_64B_FRAMES);
379 RMON_UPDATE(mac, rx_frames_65_127, RX_65_127B_FRAMES);
380 RMON_UPDATE(mac, rx_frames_128_255, RX_128_255B_FRAMES);
381 RMON_UPDATE(mac, rx_frames_256_511, RX_256_511B_FRAMES);
382 RMON_UPDATE(mac, rx_frames_512_1023, RX_512_1023B_FRAMES);
383 RMON_UPDATE(mac, rx_frames_1024_1518, RX_1024_1518B_FRAMES);
384 RMON_UPDATE(mac, rx_frames_1519_max, RX_1519_MAXB_FRAMES);
386 RMON_UPDATE64(mac, tx_octets, TX_BYTE_LOW, TX_BYTE_HIGH);
387 RMON_UPDATE64(mac, tx_frames, TX_FRAME_LOW, TX_FRAME_HIGH);
388 RMON_UPDATE(mac, tx_mcast_frames, TX_MCAST);
389 RMON_UPDATE(mac, tx_bcast_frames, TX_BCAST);
390 RMON_UPDATE(mac, tx_pause, TX_PAUSE);
391 /* This counts error frames in general (bad FCS, underrun, etc). */
392 RMON_UPDATE(mac, tx_underrun, TX_ERR_FRAMES);
394 RMON_UPDATE(mac, tx_frames_64, TX_64B_FRAMES);
395 RMON_UPDATE(mac, tx_frames_65_127, TX_65_127B_FRAMES);
396 RMON_UPDATE(mac, tx_frames_128_255, TX_128_255B_FRAMES);
397 RMON_UPDATE(mac, tx_frames_256_511, TX_256_511B_FRAMES);
398 RMON_UPDATE(mac, tx_frames_512_1023, TX_512_1023B_FRAMES);
399 RMON_UPDATE(mac, tx_frames_1024_1518, TX_1024_1518B_FRAMES);
400 RMON_UPDATE(mac, tx_frames_1519_max, TX_1519_MAXB_FRAMES);
402 /* The next stat isn't clear-on-read. */
403 t3_write_reg(mac->adapter, A_TP_MIB_INDEX, mac->offset ? 51 : 50);
404 v = t3_read_reg(mac->adapter, A_TP_MIB_RDATA);
405 lo = (u32) mac->stats.rx_cong_drops;
406 mac->stats.rx_cong_drops += (u64) (v - lo);