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RDMA/nes: Add additional SFP+ PHY uC status check and PHY reset 

Add additional PHY uC status check in case PHY firmware is not running
properly with heartbeat.  Add a hard PHY reset if uC status is 0x0
after initial reset.

Signed-off-by: Chien Tung <chien.tin.tung@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Chien Tung 2009-12-09 15:21:56 -08:00 committed by Roland Dreier
parent e293a26fe9
commit a276510328
1 changed files with 22 additions and 6 deletions
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28
drivers/infiniband/hw/nes/nes_hw.c
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@ -1356,6 +1356,8 @@ int nes_init_phy(struct nes_device *nesdev)
}
if ((phy_type == NES_PHY_TYPE_ARGUS) ||
(phy_type == NES_PHY_TYPE_SFP_D)) {
u32 first_time = 1;
/* Check firmware heartbeat */
nes_read_10G_phy_reg(nesdev, phy_index, 0x3, 0xd7ee);
temp_phy_data = (u16)nes_read_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL);
@ -1363,8 +1365,13 @@ int nes_init_phy(struct nes_device *nesdev)
nes_read_10G_phy_reg(nesdev, phy_index, 0x3, 0xd7ee);
temp_phy_data2 = (u16)nes_read_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL);
if (temp_phy_data != temp_phy_data2)
return 0;
if (temp_phy_data != temp_phy_data2) {
nes_read_10G_phy_reg(nesdev, phy_index, 0x3, 0xd7fd);
temp_phy_data = (u16)nes_read_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL);
if ((temp_phy_data & 0xff) > 0x20)
return 0;
printk(PFX "Reinitializing PHY\n");
}
/* no heartbeat, configure the PHY */
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0x0000, 0x8000);
@ -1400,7 +1407,7 @@ int nes_init_phy(struct nes_device *nesdev)
temp_phy_data = (u16)nes_read_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL);
do {
if (counter++ > 150) {
nes_debug(NES_DBG_PHY, "No PHY heartbeat\n");
printk(PFX "No PHY heartbeat\n");
break;
}
mdelay(1);
@ -1414,11 +1421,20 @@ int nes_init_phy(struct nes_device *nesdev)
nes_read_10G_phy_reg(nesdev, phy_index, 0x3, 0xd7fd);
temp_phy_data = (u16)nes_read_indexed(nesdev, NES_IDX_MAC_MDIO_CONTROL);
if (counter++ > 300) {
nes_debug(NES_DBG_PHY, "PHY did not track\n");
break;
if (((temp_phy_data & 0xff) == 0x0) && first_time) {
first_time = 0;
counter = 0;
/* reset AMCC PHY and try again */
nes_write_10G_phy_reg(nesdev, phy_index, 0x3, 0xe854, 0x00c0);
nes_write_10G_phy_reg(nesdev, phy_index, 0x3, 0xe854, 0x0040);
continue;
} else {
printk(PFX "PHY did not track\n");
break;
}
}
mdelay(10);
} while (((temp_phy_data & 0xff) != 0x50) && ((temp_phy_data & 0xff) != 0x70));
} while ((temp_phy_data & 0xff) < 0x30);
/* setup signal integrity */
nes_write_10G_phy_reg(nesdev, phy_index, 0x1, 0xd003, 0x0000);