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gerrit-public.fairphone.software / fp2-dev / kernel / msm / 0191b625ca5a46206d2fb862bb08f36f2fcb3b31 / . / drivers / net / sfc / falcon_gmac.c
blob: 8865eae20ac51ef0c40b6032ff38906e3f46b16d [file] [log] [blame]
Ben Hutchings177dfcd2008-12-12 21:50:08 -0800[diff] [blame]1/****************************************************************************
2 * Driver for Solarflare Solarstorm network controllers and boards
3 * Copyright 2005-2006 Fen Systems Ltd.
4 * Copyright 2006-2008 Solarflare Communications Inc.
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 as published
8 * by the Free Software Foundation, incorporated herein by reference.
9 */
10
11#include <linux/delay.h>
12#include "net_driver.h"
13#include "efx.h"
14#include "falcon.h"
15#include "mac.h"
16#include "falcon_hwdefs.h"
17#include "falcon_io.h"
18#include "gmii.h"
19
20/**************************************************************************
21 *
22 * MAC operations
23 *
24 *************************************************************************/
25
26static void falcon_reconfigure_gmac(struct efx_nic *efx)
27{
28 bool loopback, tx_fc, rx_fc, bytemode;
29 int if_mode;
30 unsigned int max_frame_len;
31 efx_oword_t reg;
32
33 /* Configuration register 1 */
Ben Hutchings04cc8ca2008-12-12 21:50:46 -0800[diff] [blame]34 tx_fc = (efx->link_fc & EFX_FC_TX) || !efx->link_fd;
35 rx_fc = !!(efx->link_fc & EFX_FC_RX);
Ben Hutchings177dfcd2008-12-12 21:50:08 -0800[diff] [blame]36 loopback = (efx->loopback_mode == LOOPBACK_GMAC);
37 bytemode = (efx->link_speed == 1000);
38
39 EFX_POPULATE_OWORD_5(reg,
40 GM_LOOP, loopback,
41 GM_TX_EN, 1,
42 GM_TX_FC_EN, tx_fc,
43 GM_RX_EN, 1,
44 GM_RX_FC_EN, rx_fc);
45 falcon_write(efx, &reg, GM_CFG1_REG);
46 udelay(10);
47
48 /* Configuration register 2 */
49 if_mode = (bytemode) ? 2 : 1;
50 EFX_POPULATE_OWORD_5(reg,
51 GM_IF_MODE, if_mode,
52 GM_PAD_CRC_EN, 1,
53 GM_LEN_CHK, 1,
54 GM_FD, efx->link_fd,
55 GM_PAMBL_LEN, 0x7/*datasheet recommended */);
56
57 falcon_write(efx, &reg, GM_CFG2_REG);
58 udelay(10);
59
60 /* Max frame len register */
61 max_frame_len = EFX_MAX_FRAME_LEN(efx->net_dev->mtu);
62 EFX_POPULATE_OWORD_1(reg, GM_MAX_FLEN, max_frame_len);
63 falcon_write(efx, &reg, GM_MAX_FLEN_REG);
64 udelay(10);
65
66 /* FIFO configuration register 0 */
67 EFX_POPULATE_OWORD_5(reg,
68 GMF_FTFENREQ, 1,
69 GMF_STFENREQ, 1,
70 GMF_FRFENREQ, 1,
71 GMF_SRFENREQ, 1,
72 GMF_WTMENREQ, 1);
73 falcon_write(efx, &reg, GMF_CFG0_REG);
74 udelay(10);
75
76 /* FIFO configuration register 1 */
77 EFX_POPULATE_OWORD_2(reg,
78 GMF_CFGFRTH, 0x12,
79 GMF_CFGXOFFRTX, 0xffff);
80 falcon_write(efx, &reg, GMF_CFG1_REG);
81 udelay(10);
82
83 /* FIFO configuration register 2 */
84 EFX_POPULATE_OWORD_2(reg,
85 GMF_CFGHWM, 0x3f,
86 GMF_CFGLWM, 0xa);
87 falcon_write(efx, &reg, GMF_CFG2_REG);
88 udelay(10);
89
90 /* FIFO configuration register 3 */
91 EFX_POPULATE_OWORD_2(reg,
92 GMF_CFGHWMFT, 0x1c,
93 GMF_CFGFTTH, 0x08);
94 falcon_write(efx, &reg, GMF_CFG3_REG);
95 udelay(10);
96
97 /* FIFO configuration register 4 */
98 EFX_POPULATE_OWORD_1(reg, GMF_HSTFLTRFRM_PAUSE, 1);
99 falcon_write(efx, &reg, GMF_CFG4_REG);
100 udelay(10);
101
102 /* FIFO configuration register 5 */
103 falcon_read(efx, &reg, GMF_CFG5_REG);
104 EFX_SET_OWORD_FIELD(reg, GMF_CFGBYTMODE, bytemode);
105 EFX_SET_OWORD_FIELD(reg, GMF_CFGHDPLX, !efx->link_fd);
106 EFX_SET_OWORD_FIELD(reg, GMF_HSTDRPLT64, !efx->link_fd);
107 EFX_SET_OWORD_FIELD(reg, GMF_HSTFLTRFRMDC_PAUSE, 0);
108 falcon_write(efx, &reg, GMF_CFG5_REG);
109 udelay(10);
110
111 /* MAC address */
112 EFX_POPULATE_OWORD_4(reg,
113 GM_HWADDR_5, efx->net_dev->dev_addr[5],
114 GM_HWADDR_4, efx->net_dev->dev_addr[4],
115 GM_HWADDR_3, efx->net_dev->dev_addr[3],
116 GM_HWADDR_2, efx->net_dev->dev_addr[2]);
117 falcon_write(efx, &reg, GM_ADR1_REG);
118 udelay(10);
119 EFX_POPULATE_OWORD_2(reg,
120 GM_HWADDR_1, efx->net_dev->dev_addr[1],
121 GM_HWADDR_0, efx->net_dev->dev_addr[0]);
122 falcon_write(efx, &reg, GM_ADR2_REG);
123 udelay(10);
124
125 falcon_reconfigure_mac_wrapper(efx);
126}
127
128static void falcon_update_stats_gmac(struct efx_nic *efx)
129{
130 struct efx_mac_stats *mac_stats = &efx->mac_stats;
131 unsigned long old_rx_pause, old_tx_pause;
132 unsigned long new_rx_pause, new_tx_pause;
133 int rc;
134
135 rc = falcon_dma_stats(efx, GDmaDone_offset);
136 if (rc)
137 return;
138
139 /* Pause frames are erroneously counted as errors (SFC bug 3269) */
140 old_rx_pause = mac_stats->rx_pause;
141 old_tx_pause = mac_stats->tx_pause;
142
143 /* Update MAC stats from DMAed values */
144 FALCON_STAT(efx, GRxGoodOct, rx_good_bytes);
145 FALCON_STAT(efx, GRxBadOct, rx_bad_bytes);
146 FALCON_STAT(efx, GRxMissPkt, rx_missed);
147 FALCON_STAT(efx, GRxFalseCRS, rx_false_carrier);
148 FALCON_STAT(efx, GRxPausePkt, rx_pause);
149 FALCON_STAT(efx, GRxBadPkt, rx_bad);
150 FALCON_STAT(efx, GRxUcastPkt, rx_unicast);
151 FALCON_STAT(efx, GRxMcastPkt, rx_multicast);
152 FALCON_STAT(efx, GRxBcastPkt, rx_broadcast);
153 FALCON_STAT(efx, GRxGoodLt64Pkt, rx_good_lt64);
154 FALCON_STAT(efx, GRxBadLt64Pkt, rx_bad_lt64);
155 FALCON_STAT(efx, GRx64Pkt, rx_64);
156 FALCON_STAT(efx, GRx65to127Pkt, rx_65_to_127);
157 FALCON_STAT(efx, GRx128to255Pkt, rx_128_to_255);
158 FALCON_STAT(efx, GRx256to511Pkt, rx_256_to_511);
159 FALCON_STAT(efx, GRx512to1023Pkt, rx_512_to_1023);
160 FALCON_STAT(efx, GRx1024to15xxPkt, rx_1024_to_15xx);
161 FALCON_STAT(efx, GRx15xxtoJumboPkt, rx_15xx_to_jumbo);
162 FALCON_STAT(efx, GRxGtJumboPkt, rx_gtjumbo);
163 FALCON_STAT(efx, GRxFcsErr64to15xxPkt, rx_bad_64_to_15xx);
164 FALCON_STAT(efx, GRxFcsErr15xxtoJumboPkt, rx_bad_15xx_to_jumbo);
165 FALCON_STAT(efx, GRxFcsErrGtJumboPkt, rx_bad_gtjumbo);
166 FALCON_STAT(efx, GTxGoodBadOct, tx_bytes);
167 FALCON_STAT(efx, GTxGoodOct, tx_good_bytes);
168 FALCON_STAT(efx, GTxSglColPkt, tx_single_collision);
169 FALCON_STAT(efx, GTxMultColPkt, tx_multiple_collision);
170 FALCON_STAT(efx, GTxExColPkt, tx_excessive_collision);
171 FALCON_STAT(efx, GTxDefPkt, tx_deferred);
172 FALCON_STAT(efx, GTxLateCol, tx_late_collision);
173 FALCON_STAT(efx, GTxExDefPkt, tx_excessive_deferred);
174 FALCON_STAT(efx, GTxPausePkt, tx_pause);
175 FALCON_STAT(efx, GTxBadPkt, tx_bad);
176 FALCON_STAT(efx, GTxUcastPkt, tx_unicast);
177 FALCON_STAT(efx, GTxMcastPkt, tx_multicast);
178 FALCON_STAT(efx, GTxBcastPkt, tx_broadcast);
179 FALCON_STAT(efx, GTxLt64Pkt, tx_lt64);
180 FALCON_STAT(efx, GTx64Pkt, tx_64);
181 FALCON_STAT(efx, GTx65to127Pkt, tx_65_to_127);
182 FALCON_STAT(efx, GTx128to255Pkt, tx_128_to_255);
183 FALCON_STAT(efx, GTx256to511Pkt, tx_256_to_511);
184 FALCON_STAT(efx, GTx512to1023Pkt, tx_512_to_1023);
185 FALCON_STAT(efx, GTx1024to15xxPkt, tx_1024_to_15xx);
186 FALCON_STAT(efx, GTx15xxtoJumboPkt, tx_15xx_to_jumbo);
187 FALCON_STAT(efx, GTxGtJumboPkt, tx_gtjumbo);
188 FALCON_STAT(efx, GTxNonTcpUdpPkt, tx_non_tcpudp);
189 FALCON_STAT(efx, GTxMacSrcErrPkt, tx_mac_src_error);
190 FALCON_STAT(efx, GTxIpSrcErrPkt, tx_ip_src_error);
191
192 /* Pause frames are erroneously counted as errors (SFC bug 3269) */
193 new_rx_pause = mac_stats->rx_pause;
194 new_tx_pause = mac_stats->tx_pause;
195 mac_stats->rx_bad -= (new_rx_pause - old_rx_pause);
196 mac_stats->tx_bad -= (new_tx_pause - old_tx_pause);
197
198 /* Derive stats that the MAC doesn't provide directly */
199 mac_stats->tx_bad_bytes =
200 mac_stats->tx_bytes - mac_stats->tx_good_bytes;
201 mac_stats->tx_packets =
202 mac_stats->tx_lt64 + mac_stats->tx_64 +
203 mac_stats->tx_65_to_127 + mac_stats->tx_128_to_255 +
204 mac_stats->tx_256_to_511 + mac_stats->tx_512_to_1023 +
205 mac_stats->tx_1024_to_15xx + mac_stats->tx_15xx_to_jumbo +
206 mac_stats->tx_gtjumbo;
207 mac_stats->tx_collision =
208 mac_stats->tx_single_collision +
209 mac_stats->tx_multiple_collision +
210 mac_stats->tx_excessive_collision +
211 mac_stats->tx_late_collision;
212 mac_stats->rx_bytes =
213 mac_stats->rx_good_bytes + mac_stats->rx_bad_bytes;
214 mac_stats->rx_packets =
215 mac_stats->rx_good_lt64 + mac_stats->rx_bad_lt64 +
216 mac_stats->rx_64 + mac_stats->rx_65_to_127 +
217 mac_stats->rx_128_to_255 + mac_stats->rx_256_to_511 +
218 mac_stats->rx_512_to_1023 + mac_stats->rx_1024_to_15xx +
219 mac_stats->rx_15xx_to_jumbo + mac_stats->rx_gtjumbo;
220 mac_stats->rx_good = mac_stats->rx_packets - mac_stats->rx_bad;
221 mac_stats->rx_lt64 = mac_stats->rx_good_lt64 + mac_stats->rx_bad_lt64;
222}
223
Ben Hutchings177dfcd2008-12-12 21:50:08 -0800[diff] [blame]224struct efx_mac_operations falcon_gmac_operations = {
225 .reconfigure = falcon_reconfigure_gmac,
226 .update_stats = falcon_update_stats_gmac,
Ben Hutchings766ca0f2008-12-12 21:59:24 -0800[diff] [blame]227 .irq = efx_port_dummy_op_void,
228 .poll = efx_port_dummy_op_void,
Ben Hutchings177dfcd2008-12-12 21:50:08 -0800[diff] [blame]229};