/**
* e1000_init_hw_82543 - Initialize hardware
* @hw: pointer to the HW structure
*
* This inits the hardware readying it for operation.
**/
static s32 e1000_init_hw_82543(struct e1000_hw *hw)
{
struct e1000_mac_info *mac = &hw->mac;
struct e1000_dev_spec_82543 *dev_spec = &hw->dev_spec._82543;
u32 ctrl;
s32 ret_val;
u16 i;
DEBUGFUNC("e1000_init_hw_82543");
/* Disabling VLAN filtering */
E1000_WRITE_REG(hw, E1000_VET, 0);
mac->ops.clear_vfta(hw);
/* Setup the receive address. */
e1000_init_rx_addrs_generic(hw, mac->rar_entry_count);
/* Zero out the Multicast HASH table */
DEBUGOUT("Zeroing the MTA\n");
for (i = 0; i < mac->mta_reg_count; i++) {
E1000_WRITE_REG_ARRAY(hw, E1000_MTA, i, 0);
E1000_WRITE_FLUSH(hw);
}
/*
* Set the PCI priority bit correctly in the CTRL register. This
* determines if the adapter gives priority to receives, or if it
* gives equal priority to transmits and receives.
*/
if (hw->mac.type == e1000_82543 && dev_spec->dma_fairness) {
ctrl = E1000_READ_REG(hw, E1000_CTRL);
E1000_WRITE_REG(hw, E1000_CTRL, ctrl | E1000_CTRL_PRIOR);
}
e1000_pcix_mmrbc_workaround_generic(hw);
/* Setup link and flow control */
ret_val = mac->ops.setup_link(hw);
/*
* Clear all of the statistics registers (clear on read). It is
* important that we do this after we have tried to establish link
* because the symbol error count will increment wildly if there
* is no link.
*/
e1000_clear_hw_cntrs_82543(hw);
return ret_val;
}
/**
* e1000_init_hw_82540 - Initialize hardware
* @hw: pointer to the HW structure
*
* This inits the hardware readying it for operation.
**/
static s32 e1000_init_hw_82540(struct e1000_hw *hw)
{
struct e1000_mac_info *mac = &hw->mac;
u32 txdctl, ctrl_ext;
s32 ret_val;
u16 i;
DEBUGFUNC("e1000_init_hw_82540");
/* Initialize identification LED */
ret_val = mac->ops.id_led_init(hw);
if (ret_val) {
DEBUGOUT("Error initializing identification LED\n");
/* This is not fatal and we should not stop init due to this */
}
/* Disabling VLAN filtering */
DEBUGOUT("Initializing the IEEE VLAN\n");
if (mac->type < e1000_82545_rev_3)
E1000_WRITE_REG(hw, E1000_VET, 0);
mac->ops.clear_vfta(hw);
/* Setup the receive address. */
e1000_init_rx_addrs_generic(hw, mac->rar_entry_count);
/* Zero out the Multicast HASH table */
DEBUGOUT("Zeroing the MTA\n");
for (i = 0; i < mac->mta_reg_count; i++) {
E1000_WRITE_REG_ARRAY(hw, E1000_MTA, i, 0);
/*
* Avoid back to back register writes by adding the register
* read (flush). This is to protect against some strange
* bridge configurations that may issue Memory Write Block
* (MWB) to our register space. The *_rev_3 hardware at
* least doesn't respond correctly to every other dword in an
* MWB to our register space.
*/
E1000_WRITE_FLUSH(hw);
}
if (mac->type < e1000_82545_rev_3)
e1000_pcix_mmrbc_workaround_generic(hw);
/* Setup link and flow control */
ret_val = mac->ops.setup_link(hw);
txdctl = E1000_READ_REG(hw, E1000_TXDCTL(0));
txdctl = (txdctl & ~E1000_TXDCTL_WTHRESH) |
E1000_TXDCTL_FULL_TX_DESC_WB;
E1000_WRITE_REG(hw, E1000_TXDCTL(0), txdctl);
/*
* Clear all of the statistics registers (clear on read). It is
* important that we do this after we have tried to establish link
* because the symbol error count will increment wildly if there
* is no link.
*/
e1000_clear_hw_cntrs_82540(hw);
if ((hw->device_id == E1000_DEV_ID_82546GB_QUAD_COPPER) ||
(hw->device_id == E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3)) {
ctrl_ext = E1000_READ_REG(hw, E1000_CTRL_EXT);
/*
* Relaxed ordering must be disabled to avoid a parity
* error crash in a PCI slot.
*/
ctrl_ext |= E1000_CTRL_EXT_RO_DIS;
E1000_WRITE_REG(hw, E1000_CTRL_EXT, ctrl_ext);
}
return ret_val;
}
