1 /****************************************************************************
2 * Driver for Solarflare Solarstorm network controllers and boards
3 * Copyright 2007-2008 Solarflare Communications Inc.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published
7 * by the Free Software Foundation, incorporated herein by reference.
10 #include "net_driver.h"
14 #include "workarounds.h"
16 /* Macros for unpacking the board revision */
17 /* The revision info is in host byte order. */
18 #define BOARD_TYPE(_rev) (_rev >> 8)
19 #define BOARD_MAJOR(_rev) ((_rev >> 4) & 0xf)
20 #define BOARD_MINOR(_rev) (_rev & 0xf)
22 /* Blink support. If the PHY has no auto-blink mode so we hang it off a timer */
23 #define BLINK_INTERVAL (HZ/2)
25 static void blink_led_timer(unsigned long context)
27 struct efx_nic *efx = (struct efx_nic *)context;
28 struct efx_blinker *bl = &efx->board_info.blinker;
29 efx->board_info.set_fault_led(efx, bl->state);
30 bl->state = !bl->state;
32 mod_timer(&bl->timer, jiffies + BLINK_INTERVAL);
35 static void board_blink(struct efx_nic *efx, bool blink)
37 struct efx_blinker *blinker = &efx->board_info.blinker;
39 /* The rtnl mutex serialises all ethtool ioctls, so
40 * nothing special needs doing here. */
42 blinker->resubmit = true;
43 blinker->state = false;
44 setup_timer(&blinker->timer, blink_led_timer,
46 mod_timer(&blinker->timer, jiffies + BLINK_INTERVAL);
48 blinker->resubmit = false;
49 if (blinker->timer.function)
50 del_timer_sync(&blinker->timer);
51 efx->board_info.set_fault_led(efx, false);
55 /*****************************************************************************
56 * Support for LM87 sensor chip used on several boards
58 #define LM87_REG_ALARMS1 0x41
59 #define LM87_REG_ALARMS2 0x42
60 #define LM87_IN_LIMITS(nr, _min, _max) \
61 0x2B + (nr) * 2, _max, 0x2C + (nr) * 2, _min
62 #define LM87_AIN_LIMITS(nr, _min, _max) \
63 0x3B + (nr), _max, 0x1A + (nr), _min
64 #define LM87_TEMP_INT_LIMITS(_min, _max) \
65 0x39, _max, 0x3A, _min
66 #define LM87_TEMP_EXT1_LIMITS(_min, _max) \
67 0x37, _max, 0x38, _min
69 #define LM87_ALARM_TEMP_INT 0x10
70 #define LM87_ALARM_TEMP_EXT1 0x20
72 #if defined(CONFIG_SENSORS_LM87) || defined(CONFIG_SENSORS_LM87_MODULE)
74 static int efx_init_lm87(struct efx_nic *efx, struct i2c_board_info *info,
77 struct i2c_client *client = i2c_new_device(&efx->i2c_adap, info);
84 u8 reg = *reg_values++;
85 u8 value = *reg_values++;
86 rc = i2c_smbus_write_byte_data(client, reg, value);
91 efx->board_info.hwmon_client = client;
95 i2c_unregister_device(client);
99 static void efx_fini_lm87(struct efx_nic *efx)
101 i2c_unregister_device(efx->board_info.hwmon_client);
104 static int efx_check_lm87(struct efx_nic *efx, unsigned mask)
106 struct i2c_client *client = efx->board_info.hwmon_client;
107 s32 alarms1, alarms2;
109 /* If link is up then do not monitor temperature */
110 if (EFX_WORKAROUND_7884(efx) && efx->link_up)
113 alarms1 = i2c_smbus_read_byte_data(client, LM87_REG_ALARMS1);
114 alarms2 = i2c_smbus_read_byte_data(client, LM87_REG_ALARMS2);
120 alarms2 &= mask >> 8;
121 if (alarms1 || alarms2) {
123 "LM87 detected a hardware failure (status %02x:%02x)"
126 (alarms1 & LM87_ALARM_TEMP_INT) ? " INTERNAL" : "",
127 (alarms1 & LM87_ALARM_TEMP_EXT1) ? " EXTERNAL" : "");
134 #else /* !CONFIG_SENSORS_LM87 */
137 efx_init_lm87(struct efx_nic *efx, struct i2c_board_info *info,
138 const u8 *reg_values)
142 static inline void efx_fini_lm87(struct efx_nic *efx)
145 static inline int efx_check_lm87(struct efx_nic *efx, unsigned mask)
150 #endif /* CONFIG_SENSORS_LM87 */
152 /*****************************************************************************
153 * Support for the SFE4002
156 static u8 sfe4002_lm87_channel = 0x03; /* use AIN not FAN inputs */
158 static const u8 sfe4002_lm87_regs[] = {
159 LM87_IN_LIMITS(0, 0x83, 0x91), /* 2.5V: 1.8V +/- 5% */
160 LM87_IN_LIMITS(1, 0x51, 0x5a), /* Vccp1: 1.2V +/- 5% */
161 LM87_IN_LIMITS(2, 0xb6, 0xca), /* 3.3V: 3.3V +/- 5% */
162 LM87_IN_LIMITS(3, 0xb0, 0xc9), /* 5V: 4.6-5.2V */
163 LM87_IN_LIMITS(4, 0xb0, 0xe0), /* 12V: 11-14V */
164 LM87_IN_LIMITS(5, 0x44, 0x4b), /* Vccp2: 1.0V +/- 5% */
165 LM87_AIN_LIMITS(0, 0xa0, 0xb2), /* AIN1: 1.66V +/- 5% */
166 LM87_AIN_LIMITS(1, 0x91, 0xa1), /* AIN2: 1.5V +/- 5% */
167 LM87_TEMP_INT_LIMITS(10, 60), /* board */
168 LM87_TEMP_EXT1_LIMITS(10, 70), /* Falcon */
172 static struct i2c_board_info sfe4002_hwmon_info = {
173 I2C_BOARD_INFO("lm87", 0x2e),
174 .platform_data = &sfe4002_lm87_channel,
178 /****************************************************************************/
179 /* LED allocations. Note that on rev A0 boards the schematic and the reality
180 * differ: red and green are swapped. Below is the fixed (A1) layout (there
181 * are only 3 A0 boards in existence, so no real reason to make this
184 #define SFE4002_FAULT_LED (2) /* Red */
185 #define SFE4002_RX_LED (0) /* Green */
186 #define SFE4002_TX_LED (1) /* Amber */
188 static int sfe4002_init_leds(struct efx_nic *efx)
190 /* Set the TX and RX LEDs to reflect status and activity, and the
192 xfp_set_led(efx, SFE4002_TX_LED,
193 QUAKE_LED_TXLINK | QUAKE_LED_LINK_ACTSTAT);
194 xfp_set_led(efx, SFE4002_RX_LED,
195 QUAKE_LED_RXLINK | QUAKE_LED_LINK_ACTSTAT);
196 xfp_set_led(efx, SFE4002_FAULT_LED, QUAKE_LED_OFF);
197 efx->board_info.blinker.led_num = SFE4002_FAULT_LED;
201 static void sfe4002_fault_led(struct efx_nic *efx, bool state)
203 xfp_set_led(efx, SFE4002_FAULT_LED, state ? QUAKE_LED_ON :
207 static int sfe4002_check_hw(struct efx_nic *efx)
209 /* A0 board rev. 4002s report a temperature fault the whole time
210 * (bad sensor) so we mask it out. */
211 unsigned alarm_mask =
212 (efx->board_info.major == 0 && efx->board_info.minor == 0) ?
213 ~LM87_ALARM_TEMP_EXT1 : ~0;
215 return efx_check_lm87(efx, alarm_mask);
218 static int sfe4002_init(struct efx_nic *efx)
220 int rc = efx_init_lm87(efx, &sfe4002_hwmon_info, sfe4002_lm87_regs);
223 efx->board_info.monitor = sfe4002_check_hw;
224 efx->board_info.init_leds = sfe4002_init_leds;
225 efx->board_info.set_fault_led = sfe4002_fault_led;
226 efx->board_info.blink = board_blink;
227 efx->board_info.fini = efx_fini_lm87;
231 /* This will get expanded as board-specific details get moved out of the
233 struct efx_board_data {
234 enum efx_board_type type;
235 const char *ref_model;
236 const char *gen_type;
237 int (*init) (struct efx_nic *nic);
241 static struct efx_board_data board_data[] = {
242 { EFX_BOARD_SFE4001, "SFE4001", "10GBASE-T adapter", sfe4001_init },
243 { EFX_BOARD_SFE4002, "SFE4002", "XFP adapter", sfe4002_init },
244 { EFX_BOARD_SFN4111T, "SFN4111T", "100/1000/10GBASE-T adapter",
248 void efx_set_board_info(struct efx_nic *efx, u16 revision_info)
250 struct efx_board_data *data = NULL;
253 efx->board_info.type = BOARD_TYPE(revision_info);
254 efx->board_info.major = BOARD_MAJOR(revision_info);
255 efx->board_info.minor = BOARD_MINOR(revision_info);
257 for (i = 0; i < ARRAY_SIZE(board_data); i++)
258 if (board_data[i].type == efx->board_info.type)
259 data = &board_data[i];
262 EFX_INFO(efx, "board is %s rev %c%d\n",
263 (efx->pci_dev->subsystem_vendor == EFX_VENDID_SFC)
264 ? data->ref_model : data->gen_type,
265 'A' + efx->board_info.major, efx->board_info.minor);
266 efx->board_info.init = data->init;
268 EFX_ERR(efx, "unknown board type %d\n", efx->board_info.type);