sfc: Rename Falcon-specific board code and types

Siena will require entirely different board code.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 333 insertions, 0 deletions

diff --git a/drivers/net/sfc/falcon_boards.c b/drivers/net/sfc/falcon_boards.c
new file mode 100644
index 00000000000..431b74c4a96
--- /dev/null
+++ b/drivers/net/sfc/falcon_boards.c
@@ -0,0 +1,333 @@
+/****************************************************************************
+ * Driver for Solarflare Solarstorm network controllers and boards
+ * Copyright 2007-2008 Solarflare Communications Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation, incorporated herein by reference.
+ */
+
+#include "net_driver.h"
+#include "phy.h"
+#include "boards.h"
+#include "efx.h"
+#include "workarounds.h"
+
+/* Macros for unpacking the board revision */
+/* The revision info is in host byte order. */
+#define FALCON_BOARD_TYPE(_rev) (_rev >> 8)
+#define FALCON_BOARD_MAJOR(_rev) ((_rev >> 4) & 0xf)
+#define FALCON_BOARD_MINOR(_rev) (_rev & 0xf)
+
+/* Board types */
+#define FALCON_BOARD_SFE4002 0x02
+#define FALCON_BOARD_SFN4111T 0x51
+#define FALCON_BOARD_SFN4112F 0x52
+
+/* Blink support. If the PHY has no auto-blink mode so we hang it off a timer */
+#define BLINK_INTERVAL (HZ/2)
+
+static void blink_led_timer(unsigned long context)
+{
+	struct efx_nic *efx = (struct efx_nic *)context;
+	struct efx_blinker *bl = &efx->board_info.blinker;
+	efx->board_info.set_id_led(efx, bl->state);
+	bl->state = !bl->state;
+	if (bl->resubmit)
+		mod_timer(&bl->timer, jiffies + BLINK_INTERVAL);
+}
+
+static void board_blink(struct efx_nic *efx, bool blink)
+{
+	struct efx_blinker *blinker = &efx->board_info.blinker;
+
+	/* The rtnl mutex serialises all ethtool ioctls, so
+	 * nothing special needs doing here. */
+	if (blink) {
+		blinker->resubmit = true;
+		blinker->state = false;
+		setup_timer(&blinker->timer, blink_led_timer,
+			    (unsigned long)efx);
+		mod_timer(&blinker->timer, jiffies + BLINK_INTERVAL);
+	} else {
+		blinker->resubmit = false;
+		if (blinker->timer.function)
+			del_timer_sync(&blinker->timer);
+		efx->board_info.init_leds(efx);
+	}
+}
+
+/*****************************************************************************
+ * Support for LM87 sensor chip used on several boards
+ */
+#define LM87_REG_ALARMS1		0x41
+#define LM87_REG_ALARMS2		0x42
+#define LM87_IN_LIMITS(nr, _min, _max)			\
+	0x2B + (nr) * 2, _max, 0x2C + (nr) * 2, _min
+#define LM87_AIN_LIMITS(nr, _min, _max)			\
+	0x3B + (nr), _max, 0x1A + (nr), _min
+#define LM87_TEMP_INT_LIMITS(_min, _max)		\
+	0x39, _max, 0x3A, _min
+#define LM87_TEMP_EXT1_LIMITS(_min, _max)		\
+	0x37, _max, 0x38, _min
+
+#define LM87_ALARM_TEMP_INT		0x10
+#define LM87_ALARM_TEMP_EXT1		0x20
+
+#if defined(CONFIG_SENSORS_LM87) || defined(CONFIG_SENSORS_LM87_MODULE)
+
+static int efx_init_lm87(struct efx_nic *efx, struct i2c_board_info *info,
+			 const u8 *reg_values)
+{
+	struct i2c_client *client = i2c_new_device(&efx->i2c_adap, info);
+	int rc;
+
+	if (!client)
+		return -EIO;
+
+	while (*reg_values) {
+		u8 reg = *reg_values++;
+		u8 value = *reg_values++;
+		rc = i2c_smbus_write_byte_data(client, reg, value);
+		if (rc)
+			goto err;
+	}
+
+	efx->board_info.hwmon_client = client;
+	return 0;
+
+err:
+	i2c_unregister_device(client);
+	return rc;
+}
+
+static void efx_fini_lm87(struct efx_nic *efx)
+{
+	i2c_unregister_device(efx->board_info.hwmon_client);
+}
+
+static int efx_check_lm87(struct efx_nic *efx, unsigned mask)
+{
+	struct i2c_client *client = efx->board_info.hwmon_client;
+	s32 alarms1, alarms2;
+
+	/* If link is up then do not monitor temperature */
+	if (EFX_WORKAROUND_7884(efx) && efx->link_up)
+		return 0;
+
+	alarms1 = i2c_smbus_read_byte_data(client, LM87_REG_ALARMS1);
+	alarms2 = i2c_smbus_read_byte_data(client, LM87_REG_ALARMS2);
+	if (alarms1 < 0)
+		return alarms1;
+	if (alarms2 < 0)
+		return alarms2;
+	alarms1 &= mask;
+	alarms2 &= mask >> 8;
+	if (alarms1 || alarms2) {
+		EFX_ERR(efx,
+			"LM87 detected a hardware failure (status %02x:%02x)"
+			"%s%s\n",
+			alarms1, alarms2,
+			(alarms1 & LM87_ALARM_TEMP_INT) ? " INTERNAL" : "",
+			(alarms1 & LM87_ALARM_TEMP_EXT1) ? " EXTERNAL" : "");
+		return -ERANGE;
+	}
+
+	return 0;
+}
+
+#else /* !CONFIG_SENSORS_LM87 */
+
+static inline int
+efx_init_lm87(struct efx_nic *efx, struct i2c_board_info *info,
+	      const u8 *reg_values)
+{
+	return 0;
+}
+static inline void efx_fini_lm87(struct efx_nic *efx)
+{
+}
+static inline int efx_check_lm87(struct efx_nic *efx, unsigned mask)
+{
+	return 0;
+}
+
+#endif /* CONFIG_SENSORS_LM87 */
+
+/*****************************************************************************
+ * Support for the SFE4002
+ *
+ */
+static u8 sfe4002_lm87_channel = 0x03; /* use AIN not FAN inputs */
+
+static const u8 sfe4002_lm87_regs[] = {
+	LM87_IN_LIMITS(0, 0x83, 0x91),		/* 2.5V:  1.8V +/- 5% */
+	LM87_IN_LIMITS(1, 0x51, 0x5a),		/* Vccp1: 1.2V +/- 5% */
+	LM87_IN_LIMITS(2, 0xb6, 0xca),		/* 3.3V:  3.3V +/- 5% */
+	LM87_IN_LIMITS(3, 0xb0, 0xc9),		/* 5V:    4.6-5.2V */
+	LM87_IN_LIMITS(4, 0xb0, 0xe0),		/* 12V:   11-14V */
+	LM87_IN_LIMITS(5, 0x44, 0x4b),		/* Vccp2: 1.0V +/- 5% */
+	LM87_AIN_LIMITS(0, 0xa0, 0xb2),		/* AIN1:  1.66V +/- 5% */
+	LM87_AIN_LIMITS(1, 0x91, 0xa1),		/* AIN2:  1.5V +/- 5% */
+	LM87_TEMP_INT_LIMITS(10, 60),		/* board */
+	LM87_TEMP_EXT1_LIMITS(10, 70),		/* Falcon */
+	0
+};
+
+static struct i2c_board_info sfe4002_hwmon_info = {
+	I2C_BOARD_INFO("lm87", 0x2e),
+	.platform_data	= &sfe4002_lm87_channel,
+};
+
+/****************************************************************************/
+/* LED allocations. Note that on rev A0 boards the schematic and the reality
+ * differ: red and green are swapped. Below is the fixed (A1) layout (there
+ * are only 3 A0 boards in existence, so no real reason to make this
+ * conditional).
+ */
+#define SFE4002_FAULT_LED (2)	/* Red */
+#define SFE4002_RX_LED    (0)	/* Green */
+#define SFE4002_TX_LED    (1)	/* Amber */
+
+static void sfe4002_init_leds(struct efx_nic *efx)
+{
+	/* Set the TX and RX LEDs to reflect status and activity, and the
+	 * fault LED off */
+	xfp_set_led(efx, SFE4002_TX_LED,
+		    QUAKE_LED_TXLINK | QUAKE_LED_LINK_ACTSTAT);
+	xfp_set_led(efx, SFE4002_RX_LED,
+		    QUAKE_LED_RXLINK | QUAKE_LED_LINK_ACTSTAT);
+	xfp_set_led(efx, SFE4002_FAULT_LED, QUAKE_LED_OFF);
+}
+
+static void sfe4002_set_id_led(struct efx_nic *efx, bool state)
+{
+	xfp_set_led(efx, SFE4002_FAULT_LED, state ? QUAKE_LED_ON :
+			QUAKE_LED_OFF);
+}
+
+static int sfe4002_check_hw(struct efx_nic *efx)
+{
+	/* A0 board rev. 4002s report a temperature fault the whole time
+	 * (bad sensor) so we mask it out. */
+	unsigned alarm_mask =
+		(efx->board_info.major == 0 && efx->board_info.minor == 0) ?
+		~LM87_ALARM_TEMP_EXT1 : ~0;
+
+	return efx_check_lm87(efx, alarm_mask);
+}
+
+static int sfe4002_init(struct efx_nic *efx)
+{
+	int rc = efx_init_lm87(efx, &sfe4002_hwmon_info, sfe4002_lm87_regs);
+	if (rc)
+		return rc;
+	efx->board_info.monitor = sfe4002_check_hw;
+	efx->board_info.init_leds = sfe4002_init_leds;
+	efx->board_info.set_id_led = sfe4002_set_id_led;
+	efx->board_info.blink = board_blink;
+	efx->board_info.fini = efx_fini_lm87;
+	return 0;
+}
+
+/*****************************************************************************
+ * Support for the SFN4112F
+ *
+ */
+static u8 sfn4112f_lm87_channel = 0x03; /* use AIN not FAN inputs */
+
+static const u8 sfn4112f_lm87_regs[] = {
+	LM87_IN_LIMITS(0, 0x83, 0x91),		/* 2.5V:  1.8V +/- 5% */
+	LM87_IN_LIMITS(1, 0x51, 0x5a),		/* Vccp1: 1.2V +/- 5% */
+	LM87_IN_LIMITS(2, 0xb6, 0xca),		/* 3.3V:  3.3V +/- 5% */
+	LM87_IN_LIMITS(4, 0xb0, 0xe0),		/* 12V:   11-14V */
+	LM87_IN_LIMITS(5, 0x44, 0x4b),		/* Vccp2: 1.0V +/- 5% */
+	LM87_AIN_LIMITS(1, 0x91, 0xa1),		/* AIN2:  1.5V +/- 5% */
+	LM87_TEMP_INT_LIMITS(10, 60),		/* board */
+	LM87_TEMP_EXT1_LIMITS(10, 70),		/* Falcon */
+	0
+};
+
+static struct i2c_board_info sfn4112f_hwmon_info = {
+	I2C_BOARD_INFO("lm87", 0x2e),
+	.platform_data	= &sfn4112f_lm87_channel,
+};
+
+#define SFN4112F_ACT_LED	0
+#define SFN4112F_LINK_LED	1
+
+static void sfn4112f_init_leds(struct efx_nic *efx)
+{
+	xfp_set_led(efx, SFN4112F_ACT_LED,
+		    QUAKE_LED_RXLINK | QUAKE_LED_LINK_ACT);
+	xfp_set_led(efx, SFN4112F_LINK_LED,
+		    QUAKE_LED_RXLINK | QUAKE_LED_LINK_STAT);
+}
+
+static void sfn4112f_set_id_led(struct efx_nic *efx, bool state)
+{
+	xfp_set_led(efx, SFN4112F_LINK_LED,
+		    state ? QUAKE_LED_ON : QUAKE_LED_OFF);
+}
+
+static int sfn4112f_check_hw(struct efx_nic *efx)
+{
+	/* Mask out unused sensors */
+	return efx_check_lm87(efx, ~0x48);
+}
+
+static int sfn4112f_init(struct efx_nic *efx)
+{
+	int rc = efx_init_lm87(efx, &sfn4112f_hwmon_info, sfn4112f_lm87_regs);
+	if (rc)
+		return rc;
+	efx->board_info.monitor = sfn4112f_check_hw;
+	efx->board_info.init_leds = sfn4112f_init_leds;
+	efx->board_info.set_id_led = sfn4112f_set_id_led;
+	efx->board_info.blink = board_blink;
+	efx->board_info.fini = efx_fini_lm87;
+	return 0;
+}
+
+/* This will get expanded as board-specific details get moved out of the
+ * PHY drivers. */
+struct falcon_board_data {
+	u8 type;
+	const char *ref_model;
+	const char *gen_type;
+	int (*init) (struct efx_nic *nic);
+};
+
+
+static struct falcon_board_data board_data[] = {
+	{ FALCON_BOARD_SFE4001, "SFE4001", "10GBASE-T adapter", sfe4001_init },
+	{ FALCON_BOARD_SFE4002, "SFE4002", "XFP adapter", sfe4002_init },
+	{ FALCON_BOARD_SFN4111T, "SFN4111T", "100/1000/10GBASE-T adapter",
+	  sfn4111t_init },
+	{ FALCON_BOARD_SFN4112F, "SFN4112F", "SFP+ adapter",
+	  sfn4112f_init },
+};
+
+void falcon_probe_board(struct efx_nic *efx, u16 revision_info)
+{
+	struct falcon_board_data *data = NULL;
+	int i;
+
+	efx->board_info.type = FALCON_BOARD_TYPE(revision_info);
+	efx->board_info.major = FALCON_BOARD_MAJOR(revision_info);
+	efx->board_info.minor = FALCON_BOARD_MINOR(revision_info);
+
+	for (i = 0; i < ARRAY_SIZE(board_data); i++)
+		if (board_data[i].type == efx->board_info.type)
+			data = &board_data[i];
+
+	if (data) {
+		EFX_INFO(efx, "board is %s rev %c%d\n",
+			 (efx->pci_dev->subsystem_vendor == EFX_VENDID_SFC)
+			 ? data->ref_model : data->gen_type,
+			 'A' + efx->board_info.major, efx->board_info.minor);
+		efx->board_info.init = data->init;
+	} else {
+		EFX_ERR(efx, "unknown board type %d\n", efx->board_info.type);
+	}
+}