/** * igc_reset_hw_base - Reset hardware * @hw: pointer to the HW structure * * This resets the hardware into a known state. This is a * function pointer entry point called by the api module.
*/ static s32 igc_reset_hw_base(struct igc_hw *hw)
{
s32 ret_val;
u32 ctrl;
/* Prevent the PCI-E bus from sticking if there is no TLP connection * on the last TLP read/write transaction when MAC is reset.
*/
ret_val = igc_disable_pcie_master(hw); if (ret_val)
hw_dbg("PCI-E Master disable polling has failed\n");
hw_dbg("Masking off all interrupts\n");
wr32(IGC_IMC, 0xffffffff);
hw_dbg("Issuing a global reset to MAC\n");
wr32(IGC_CTRL, ctrl | IGC_CTRL_RST);
ret_val = igc_get_auto_rd_done(hw); if (ret_val) { /* When auto config read does not complete, do not * return with an error. This can happen in situations * where there is no eeprom and prevents getting link.
*/
hw_dbg("Auto Read Done did not complete\n");
}
/* Clear any pending interrupt events. */
wr32(IGC_IMC, 0xffffffff);
rd32(IGC_ICR);
if (nvm->word_size == BIT(15))
nvm->page_size = 128;
return 0;
}
/** * igc_setup_copper_link_base - Configure copper link settings * @hw: pointer to the HW structure * * Configures the link for auto-neg or forced speed and duplex. Then we check * for link, once link is established calls to configure collision distance * and flow control are called.
*/ static s32 igc_setup_copper_link_base(struct igc_hw *hw)
{
s32 ret_val = 0;
u32 ctrl;
/* set lan id */
hw->bus.func = FIELD_GET(IGC_STATUS_FUNC_MASK, rd32(IGC_STATUS));
/* Make sure the PHY is in a good state. Several people have reported * firmware leaving the PHY's page select register set to something * other than the default of zero, which causes the PHY ID read to * access something other than the intended register.
*/
ret_val = hw->phy.ops.reset(hw); if (ret_val) {
hw_dbg("Error resetting the PHY\n"); goto out;
}
ret_val = igc_get_phy_id(hw); if (ret_val) return ret_val;
switch (hw->device_id) { case IGC_DEV_ID_I225_LM: case IGC_DEV_ID_I225_V: case IGC_DEV_ID_I225_I: case IGC_DEV_ID_I220_V: case IGC_DEV_ID_I225_K: case IGC_DEV_ID_I225_K2: case IGC_DEV_ID_I226_K: case IGC_DEV_ID_I225_LMVP: case IGC_DEV_ID_I226_LMVP: case IGC_DEV_ID_I225_IT: case IGC_DEV_ID_I226_LM: case IGC_DEV_ID_I226_V: case IGC_DEV_ID_I226_IT: case IGC_DEV_ID_I221_V: case IGC_DEV_ID_I226_BLANK_NVM: case IGC_DEV_ID_I225_BLANK_NVM:
mac->type = igc_i225; break; default: return -IGC_ERR_MAC_INIT;
}
hw->phy.media_type = igc_media_type_copper;
/* mac initialization and operations */
ret_val = igc_init_mac_params_base(hw); if (ret_val) goto out;
/** * igc_acquire_phy_base - Acquire rights to access PHY * @hw: pointer to the HW structure * * Acquire access rights to the correct PHY. This is a * function pointer entry point called by the api module.
*/ static s32 igc_acquire_phy_base(struct igc_hw *hw)
{
u16 mask = IGC_SWFW_PHY0_SM;
return hw->mac.ops.acquire_swfw_sync(hw, mask);
}
/** * igc_release_phy_base - Release rights to access PHY * @hw: pointer to the HW structure * * A wrapper to release access rights to the correct PHY. This is a * function pointer entry point called by the api module.
*/ staticvoid igc_release_phy_base(struct igc_hw *hw)
{
u16 mask = IGC_SWFW_PHY0_SM;
hw->mac.ops.release_swfw_sync(hw, mask);
}
/** * igc_init_hw_base - Initialize hardware * @hw: pointer to the HW structure * * This inits the hardware readying it for operation.
*/ static s32 igc_init_hw_base(struct igc_hw *hw)
{ struct igc_mac_info *mac = &hw->mac;
u16 i, rar_count = mac->rar_entry_count;
s32 ret_val = 0;
/* Setup the receive address */
igc_init_rx_addrs(hw, rar_count);
/* Zero out the Multicast HASH table */
hw_dbg("Zeroing the MTA\n"); for (i = 0; i < mac->mta_reg_count; i++)
array_wr32(IGC_MTA, i, 0);
/* Zero out the Unicast HASH table */
hw_dbg("Zeroing the UTA\n"); for (i = 0; i < mac->uta_reg_count; i++)
array_wr32(IGC_UTA, i, 0);
/* Setup link and flow control */
ret_val = igc_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.
*/
igc_clear_hw_cntrs_base(hw);
return ret_val;
}
/** * igc_power_down_phy_copper_base - Remove link during PHY power down * @hw: pointer to the HW structure * * In the case of a PHY power down to save power, or to turn off link during a * driver unload, or wake on lan is not enabled, remove the link.
*/ void igc_power_down_phy_copper_base(struct igc_hw *hw)
{ /* If the management interface is not enabled, then power down */ if (!(igc_enable_mng_pass_thru(hw) || igc_check_reset_block(hw)))
igc_power_down_phy_copper(hw);
}
/** * igc_rx_fifo_flush_base - Clean rx fifo after Rx enable * @hw: pointer to the HW structure * * After Rx enable, if manageability is enabled then there is likely some * bad data at the start of the fifo and possibly in the DMA fifo. This * function clears the fifos and flushes any packets that came in as rx was * being enabled.
*/ void igc_rx_fifo_flush_base(struct igc_hw *hw)
{
u32 rctl, rlpml, rxdctl[4], rfctl, temp_rctl, rx_enabled; int i, ms_wait;
/* disable IPv6 options as per hardware errata */
rfctl = rd32(IGC_RFCTL);
rfctl |= IGC_RFCTL_IPV6_EX_DIS;
wr32(IGC_RFCTL, rfctl);
if (!(rd32(IGC_MANC) & IGC_MANC_RCV_TCO_EN)) return;
/* Disable all Rx queues */ for (i = 0; i < 4; i++) {
rxdctl[i] = rd32(IGC_RXDCTL(i));
wr32(IGC_RXDCTL(i),
rxdctl[i] & ~IGC_RXDCTL_QUEUE_ENABLE);
} /* Poll all queues to verify they have shut down */ for (ms_wait = 0; ms_wait < 10; ms_wait++) {
usleep_range(1000, 2000);
rx_enabled = 0; for (i = 0; i < 4; i++)
rx_enabled |= rd32(IGC_RXDCTL(i)); if (!(rx_enabled & IGC_RXDCTL_QUEUE_ENABLE)) break;
}
if (ms_wait == 10)
hw_dbg("Queue disable timed out after 10ms\n");
/* Clear RLPML, RCTL.SBP, RFCTL.LEF, and set RCTL.LPE so that all * incoming packets are rejected. Set enable and wait 2ms so that * any packet that was coming in as RCTL.EN was set is flushed
*/
wr32(IGC_RFCTL, rfctl & ~IGC_RFCTL_LEF);
/* Enable Rx queues that were previously enabled and restore our * previous state
*/ for (i = 0; i < 4; i++)
wr32(IGC_RXDCTL(i), rxdctl[i]);
wr32(IGC_RCTL, rctl);
wrfl();
bool igc_is_device_id_i225(struct igc_hw *hw)
{ switch (hw->device_id) { case IGC_DEV_ID_I225_LM: case IGC_DEV_ID_I225_V: case IGC_DEV_ID_I225_I: case IGC_DEV_ID_I225_K: case IGC_DEV_ID_I225_K2: case IGC_DEV_ID_I225_LMVP: case IGC_DEV_ID_I225_IT: returntrue; default: returnfalse;
}
}
bool igc_is_device_id_i226(struct igc_hw *hw)
{ switch (hw->device_id) { case IGC_DEV_ID_I226_LM: case IGC_DEV_ID_I226_V: case IGC_DEV_ID_I226_K: case IGC_DEV_ID_I226_IT: returntrue; default: returnfalse;
}
}
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