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bnx2x: Fan failure
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Setup fan failure for different PHY types or according to nvram settings

Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Eilon Greenstein authored and David S. Miller committed Jul 21, 2009
1 parent 279abdf commit fd4ef40
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Showing 2 changed files with 90 additions and 37 deletions.
15 changes: 15 additions & 0 deletions drivers/net/bnx2x_hsi.h
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Original file line number Diff line number Diff line change
Expand Up @@ -91,6 +91,21 @@ struct shared_hw_cfg { /* NVRAM Offset */

#define SHARED_HW_CFG_HIDE_PORT1 0x00002000

/* The fan failure mechanism is usually related to the PHY type
since the power consumption of the board is determined by the PHY.
Currently, fan is required for most designs with SFX7101, BCM8727
and BCM8481. If a fan is not required for a board which uses one
of those PHYs, this field should be set to "Disabled". If a fan is
required for a different PHY type, this option should be set to
"Enabled".
The fan failure indication is expected on
SPIO5 */
#define SHARED_HW_CFG_FAN_FAILURE_MASK 0x00180000
#define SHARED_HW_CFG_FAN_FAILURE_SHIFT 19
#define SHARED_HW_CFG_FAN_FAILURE_PHY_TYPE 0x00000000
#define SHARED_HW_CFG_FAN_FAILURE_DISABLED 0x00080000
#define SHARED_HW_CFG_FAN_FAILURE_ENABLED 0x00100000

u32 power_dissipated; /* 0x11c */
#define SHARED_HW_CFG_POWER_DIS_CMN_MASK 0xff000000
#define SHARED_HW_CFG_POWER_DIS_CMN_SHIFT 24
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112 changes: 75 additions & 37 deletions drivers/net/bnx2x_main.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2598,6 +2598,22 @@ static void bnx2x_attn_int_asserted(struct bnx2x *bp, u32 asserted)
}
}

static inline void bnx2x_fan_failure(struct bnx2x *bp)
{
int port = BP_PORT(bp);

/* mark the failure */
bp->link_params.ext_phy_config &= ~PORT_HW_CFG_XGXS_EXT_PHY_TYPE_MASK;
bp->link_params.ext_phy_config |= PORT_HW_CFG_XGXS_EXT_PHY_TYPE_FAILURE;
SHMEM_WR(bp, dev_info.port_hw_config[port].external_phy_config,
bp->link_params.ext_phy_config);

/* log the failure */
printk(KERN_ERR PFX "Fan Failure on Network Controller %s has caused"
" the driver to shutdown the card to prevent permanent"
" damage. Please contact Dell Support for assistance\n",
bp->dev->name);
}
static inline void bnx2x_attn_int_deasserted0(struct bnx2x *bp, u32 attn)
{
int port = BP_PORT(bp);
Expand All @@ -2615,36 +2631,21 @@ static inline void bnx2x_attn_int_deasserted0(struct bnx2x *bp, u32 attn)

BNX2X_ERR("SPIO5 hw attention\n");

/* Fan failure attention */
switch (XGXS_EXT_PHY_TYPE(bp->link_params.ext_phy_config)) {
case PORT_HW_CFG_XGXS_EXT_PHY_TYPE_SFX7101:
/* Fan failure attention */

/* The PHY reset is controlled by GPIO 1 */
bnx2x_set_gpio(bp, MISC_REGISTERS_GPIO_1,
MISC_REGISTERS_GPIO_OUTPUT_LOW, port);
/* Low power mode is controlled by GPIO 2 */
bnx2x_set_gpio(bp, MISC_REGISTERS_GPIO_2,
MISC_REGISTERS_GPIO_OUTPUT_LOW, port);
/* mark the failure */
bp->link_params.ext_phy_config &=
~PORT_HW_CFG_XGXS_EXT_PHY_TYPE_MASK;
bp->link_params.ext_phy_config |=
PORT_HW_CFG_XGXS_EXT_PHY_TYPE_FAILURE;
SHMEM_WR(bp,
dev_info.port_hw_config[port].
external_phy_config,
bp->link_params.ext_phy_config);
/* log the failure */
printk(KERN_ERR PFX "Fan Failure on Network"
" Controller %s has caused the driver to"
" shutdown the card to prevent permanent"
" damage. Please contact Dell Support for"
" assistance\n", bp->dev->name);
/* The PHY reset is controlled by GPIO 1 */
bnx2x_set_gpio(bp, MISC_REGISTERS_GPIO_1,
MISC_REGISTERS_GPIO_OUTPUT_LOW, port);
break;

default:
break;
}
bnx2x_fan_failure(bp);
}

if (attn & (AEU_INPUTS_ATTN_BITS_GPIO3_FUNCTION_0 |
Expand Down Expand Up @@ -5509,6 +5510,58 @@ static void bnx2x_reset_common(struct bnx2x *bp)
REG_WR(bp, GRCBASE_MISC + MISC_REGISTERS_RESET_REG_2_CLEAR, 0x1403);
}


static void bnx2x_setup_fan_failure_detection(struct bnx2x *bp)
{
u32 val;
u8 port;
u8 is_required = 0;

val = SHMEM_RD(bp, dev_info.shared_hw_config.config2) &
SHARED_HW_CFG_FAN_FAILURE_MASK;

if (val == SHARED_HW_CFG_FAN_FAILURE_ENABLED)
is_required = 1;

/*
* The fan failure mechanism is usually related to the PHY type since
* the power consumption of the board is affected by the PHY. Currently,
* fan is required for most designs with SFX7101, BCM8727 and BCM8481.
*/
else if (val == SHARED_HW_CFG_FAN_FAILURE_PHY_TYPE)
for (port = PORT_0; port < PORT_MAX; port++) {
u32 phy_type =
SHMEM_RD(bp, dev_info.port_hw_config[port].
external_phy_config) &
PORT_HW_CFG_XGXS_EXT_PHY_TYPE_MASK;
is_required |=
((phy_type ==
PORT_HW_CFG_XGXS_EXT_PHY_TYPE_SFX7101) ||
(phy_type ==
PORT_HW_CFG_XGXS_EXT_PHY_TYPE_BCM8481));
}

DP(NETIF_MSG_HW, "fan detection setting: %d\n", is_required);

if (is_required == 0)
return;

/* Fan failure is indicated by SPIO 5 */
bnx2x_set_spio(bp, MISC_REGISTERS_SPIO_5,
MISC_REGISTERS_SPIO_INPUT_HI_Z);

/* set to active low mode */
val = REG_RD(bp, MISC_REG_SPIO_INT);
val |= ((1 << MISC_REGISTERS_SPIO_5) <<
MISC_REGISTERS_SPIO_INT_OLD_SET_POS);
REG_WR(bp, MISC_REG_SPIO_INT, val);

/* enable interrupt to signal the IGU */
val = REG_RD(bp, MISC_REG_SPIO_EVENT_EN);
val |= (1 << MISC_REGISTERS_SPIO_5);
REG_WR(bp, MISC_REG_SPIO_EVENT_EN, val);
}

static int bnx2x_init_common(struct bnx2x *bp)
{
u32 val, i;
Expand Down Expand Up @@ -5738,27 +5791,12 @@ static int bnx2x_init_common(struct bnx2x *bp)
bp->port.need_hw_lock = 1;
break;

case PORT_HW_CFG_XGXS_EXT_PHY_TYPE_SFX7101:
/* Fan failure is indicated by SPIO 5 */
bnx2x_set_spio(bp, MISC_REGISTERS_SPIO_5,
MISC_REGISTERS_SPIO_INPUT_HI_Z);

/* set to active low mode */
val = REG_RD(bp, MISC_REG_SPIO_INT);
val |= ((1 << MISC_REGISTERS_SPIO_5) <<
MISC_REGISTERS_SPIO_INT_OLD_SET_POS);
REG_WR(bp, MISC_REG_SPIO_INT, val);

/* enable interrupt to signal the IGU */
val = REG_RD(bp, MISC_REG_SPIO_EVENT_EN);
val |= (1 << MISC_REGISTERS_SPIO_5);
REG_WR(bp, MISC_REG_SPIO_EVENT_EN, val);
break;

default:
break;
}

bnx2x_setup_fan_failure_detection(bp);

/* clear PXP2 attentions */
REG_RD(bp, PXP2_REG_PXP2_INT_STS_CLR_0);

Expand Down

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