static int
e1000_link_test(struct e1000_adapter *adapter, uint64_t *data)
{
*data = 0;
if (adapter->hw.media_type == e1000_media_type_internal_serdes) {
int i = 0;
adapter->hw.serdes_link_down = TRUE;
/* On some blade server designs, link establishment
* could take as long as 2-3 minutes */
do {
e1000_check_for_link(&adapter->hw);
if (adapter->hw.serdes_link_down == FALSE)
return *data;
msec_delay(20);
} while (i++ < 3750);
*data = 1;
} else {
e1000_check_for_link(&adapter->hw);
if(adapter->hw.autoneg) /* if auto_neg is set wait for it */
msec_delay(4000);
if(!(E1000_READ_REG(&adapter->hw, STATUS) & E1000_STATUS_LU)) {
*data = 1;
}
}
return *data;
}
/**
* e1000_reset_hw_82540 - Reset hardware
* @hw: pointer to the HW structure
*
* This resets the hardware into a known state.
**/
static s32 e1000_reset_hw_82540(struct e1000_hw *hw)
{
u32 ctrl, manc;
s32 ret_val = E1000_SUCCESS;
DEBUGFUNC("e1000_reset_hw_82540");
DEBUGOUT("Masking off all interrupts\n");
E1000_WRITE_REG(hw, E1000_IMC, 0xFFFFFFFF);
E1000_WRITE_REG(hw, E1000_RCTL, 0);
E1000_WRITE_REG(hw, E1000_TCTL, E1000_TCTL_PSP);
E1000_WRITE_FLUSH(hw);
/*
* Delay to allow any outstanding PCI transactions to complete
* before resetting the device.
*/
msec_delay(10);
ctrl = E1000_READ_REG(hw, E1000_CTRL);
DEBUGOUT("Issuing a global reset to 82540/82545/82546 MAC\n");
switch (hw->mac.type) {
case e1000_82545_rev_3:
case e1000_82546_rev_3:
E1000_WRITE_REG(hw, E1000_CTRL_DUP, ctrl | E1000_CTRL_RST);
break;
default:
/*
* These controllers can't ack the 64-bit write when
* issuing the reset, so we use IO-mapping as a
* workaround to issue the reset.
*/
E1000_WRITE_REG_IO(hw, E1000_CTRL, ctrl | E1000_CTRL_RST);
break;
}
/* Wait for EEPROM reload */
msec_delay(5);
/* Disable HW ARPs on ASF enabled adapters */
manc = E1000_READ_REG(hw, E1000_MANC);
manc &= ~E1000_MANC_ARP_EN;
E1000_WRITE_REG(hw, E1000_MANC, manc);
E1000_WRITE_REG(hw, E1000_IMC, 0xffffffff);
E1000_READ_REG(hw, E1000_ICR);
return ret_val;
}
/**
* e1000_reset_hw_82543 - Reset hardware
* @hw: pointer to the HW structure
*
* This resets the hardware into a known state.
**/
static s32 e1000_reset_hw_82543(struct e1000_hw *hw)
{
u32 ctrl;
s32 ret_val = E1000_SUCCESS;
DEBUGFUNC("e1000_reset_hw_82543");
DEBUGOUT("Masking off all interrupts\n");
E1000_WRITE_REG(hw, E1000_IMC, 0xffffffff);
E1000_WRITE_REG(hw, E1000_RCTL, 0);
E1000_WRITE_REG(hw, E1000_TCTL, E1000_TCTL_PSP);
E1000_WRITE_FLUSH(hw);
e1000_set_tbi_sbp_82543(hw, FALSE);
/*
* Delay to allow any outstanding PCI transactions to complete before
* resetting the device
*/
msec_delay(10);
ctrl = E1000_READ_REG(hw, E1000_CTRL);
DEBUGOUT("Issuing a global reset to 82543/82544 MAC\n");
if (hw->mac.type == e1000_82543) {
E1000_WRITE_REG(hw, E1000_CTRL, ctrl | E1000_CTRL_RST);
} else {
/*
* The 82544 can't ACK the 64-bit write when issuing the
* reset, so use IO-mapping as a workaround.
*/
E1000_WRITE_REG_IO(hw, E1000_CTRL, ctrl | E1000_CTRL_RST);
}
/*
* After MAC reset, force reload of NVM to restore power-on
* settings to device.
*/
hw->nvm.ops.reload(hw);
msec_delay(2);
/* Masking off and clearing any pending interrupts */
E1000_WRITE_REG(hw, E1000_IMC, 0xffffffff);
E1000_READ_REG(hw, E1000_ICR);
return ret_val;
}
static int
e1000_run_loopback_test(struct e1000_adapter *adapter)
{
struct e1000_desc_ring *txdr = &adapter->test_tx_ring;
struct e1000_desc_ring *rxdr = &adapter->test_rx_ring;
struct pci_dev *pdev = adapter->pdev;
int i;
E1000_WRITE_REG(&adapter->hw, RDT, rxdr->count - 1);
for(i = 0; i < 64; i++) {
e1000_create_lbtest_frame(txdr->buffer_info[i].skb, 1024);
pci_dma_sync_single_for_device(pdev, txdr->buffer_info[i].dma,
txdr->buffer_info[i].length,
PCI_DMA_TODEVICE);
}
E1000_WRITE_REG(&adapter->hw, TDT, i);
msec_delay(200);
i = 0;
do {
pci_dma_sync_single_for_cpu(pdev, rxdr->buffer_info[i].dma,
rxdr->buffer_info[i].length,
PCI_DMA_FROMDEVICE);
if (!e1000_check_lbtest_frame(rxdr->buffer_info[i++].skb, 1024))
return 0;
} while (i < 64);
return 13;
}
/**
* ixgbe_blink_led_start_82598 - Blink LED based on index.
* @hw: pointer to hardware structure
* @index: led number to blink
**/
int32_t ixgbe_blink_led_start_82598(struct ixgbe_hw *hw, uint32_t index)
{
ixgbe_link_speed speed = 0;
int link_up = 0;
uint32_t autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
uint32_t led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
/*
* Link must be up to auto-blink the LEDs on the 82598EB MAC;
* force it if link is down.
*/
hw->mac.ops.check_link(hw, &speed, &link_up, FALSE);
if (!link_up) {
autoc_reg |= IXGBE_AUTOC_FLU;
IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg);
msec_delay(10);
}
led_reg &= ~IXGBE_LED_MODE_MASK(index);
led_reg |= IXGBE_LED_BLINK(index);
IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
IXGBE_WRITE_FLUSH(hw);
return IXGBE_SUCCESS;
}
IOReturn AtherosL1Ethernet::disable(IONetworkInterface *netif)
{
DbgPrint("disable()\n");
at_adapter *adapter=&adapter_;
setLinkStatus(kIONetworkLinkValid, 0);
transmitQueue_->flush();
transmitQueue_->stop();
transmitQueue_->setCapacity(0);
/* reset MAC to disable all RX/TX */
at_reset_hw(&adapter->hw);
adapter->cmb.cmb->int_stats = 0;
msec_delay(1);
at_irq_disable(adapter);
adapter->link_speed = SPEED_0;
adapter->link_duplex = -1;
at_clean_tx_ring(adapter);
at_clean_rx_ring(adapter);
if (adapter->pdev && adapter->pdev->isOpen () ) adapter->pdev->close(this);
return kIOReturnSuccess;
}
/**
* e1000_phy_hw_reset_82543 - PHY hardware reset
* @hw: pointer to the HW structure
*
* Sets the PHY_RESET_DIR bit in the extended device control register
* to put the PHY into a reset and waits for completion. Once the reset
* has been accomplished, clear the PHY_RESET_DIR bit to take the PHY out
* of reset.
**/
static s32 e1000_phy_hw_reset_82543(struct e1000_hw *hw)
{
u32 ctrl_ext;
s32 ret_val;
DEBUGFUNC("e1000_phy_hw_reset_82543");
/*
* Read the Extended Device Control Register, assert the PHY_RESET_DIR
* bit to put the PHY into reset...
*/
ctrl_ext = E1000_READ_REG(hw, E1000_CTRL_EXT);
ctrl_ext |= E1000_CTRL_EXT_SDP4_DIR;
ctrl_ext &= ~E1000_CTRL_EXT_SDP4_DATA;
E1000_WRITE_REG(hw, E1000_CTRL_EXT, ctrl_ext);
E1000_WRITE_FLUSH(hw);
msec_delay(10);
/* ...then take it out of reset. */
ctrl_ext |= E1000_CTRL_EXT_SDP4_DATA;
E1000_WRITE_REG(hw, E1000_CTRL_EXT, ctrl_ext);
E1000_WRITE_FLUSH(hw);
usec_delay(150);
if (!(hw->phy.ops.get_cfg_done))
return E1000_SUCCESS;
ret_val = hw->phy.ops.get_cfg_done(hw);
return ret_val;
}
/**
* e1000_pll_workaround_i210
* @hw: pointer to the HW structure
*
* Works around an errata in the PLL circuit where it occasionally
* provides the wrong clock frequency after power up.
**/
static s32 e1000_pll_workaround_i210(struct e1000_hw *hw)
{
s32 ret_val;
u32 wuc, mdicnfg, ctrl, ctrl_ext, reg_val;
u16 nvm_word, phy_word, pci_word, tmp_nvm;
int i;
/* Get and set needed register values */
wuc = E1000_READ_REG(hw, E1000_WUC);
mdicnfg = E1000_READ_REG(hw, E1000_MDICNFG);
reg_val = mdicnfg & ~E1000_MDICNFG_EXT_MDIO;
E1000_WRITE_REG(hw, E1000_MDICNFG, reg_val);
/* Get data from NVM, or set default */
ret_val = e1000_read_invm_word_i210(hw, E1000_INVM_AUTOLOAD,
&nvm_word);
if (ret_val != E1000_SUCCESS)
nvm_word = E1000_INVM_DEFAULT_AL;
tmp_nvm = nvm_word | E1000_INVM_PLL_WO_VAL;
for (i = 0; i < E1000_MAX_PLL_TRIES; i++) {
/* check current state directly from internal PHY */
e1000_read_phy_reg_gs40g(hw, (E1000_PHY_PLL_FREQ_PAGE |
E1000_PHY_PLL_FREQ_REG), &phy_word);
if ((phy_word & E1000_PHY_PLL_UNCONF)
!= E1000_PHY_PLL_UNCONF) {
ret_val = E1000_SUCCESS;
break;
} else {
ret_val = -E1000_ERR_PHY;
}
/* directly reset the internal PHY */
ctrl = E1000_READ_REG(hw, E1000_CTRL);
E1000_WRITE_REG(hw, E1000_CTRL, ctrl|E1000_CTRL_PHY_RST);
ctrl_ext = E1000_READ_REG(hw, E1000_CTRL_EXT);
ctrl_ext |= (E1000_CTRL_EXT_PHYPDEN | E1000_CTRL_EXT_SDLPE);
E1000_WRITE_REG(hw, E1000_CTRL_EXT, ctrl_ext);
E1000_WRITE_REG(hw, E1000_WUC, 0);
reg_val = (E1000_INVM_AUTOLOAD << 4) | (tmp_nvm << 16);
E1000_WRITE_REG(hw, E1000_EEARBC_I210, reg_val);
e1000_read_pci_cfg(hw, E1000_PCI_PMCSR, &pci_word);
pci_word |= E1000_PCI_PMCSR_D3;
e1000_write_pci_cfg(hw, E1000_PCI_PMCSR, &pci_word);
msec_delay(1);
pci_word &= ~E1000_PCI_PMCSR_D3;
e1000_write_pci_cfg(hw, E1000_PCI_PMCSR, &pci_word);
reg_val = (E1000_INVM_AUTOLOAD << 4) | (nvm_word << 16);
E1000_WRITE_REG(hw, E1000_EEARBC_I210, reg_val);
/* restore WUC register */
E1000_WRITE_REG(hw, E1000_WUC, wuc);
}
/* restore MDICNFG setting */
E1000_WRITE_REG(hw, E1000_MDICNFG, mdicnfg);
return ret_val;
}
STATIC void
ifcvf_reset(struct ifcvf_hw *hw)
{
ifcvf_set_status(hw, 0);
/* flush status write */
while (ifcvf_get_status(hw))
msec_delay(1);
}
/**
* e1000_reset_hw_82542 - Reset hardware
* @hw: pointer to the HW structure
*
* This resets the hardware into a known state.
**/
static s32 e1000_reset_hw_82542(struct e1000_hw *hw)
{
struct e1000_bus_info *bus = &hw->bus;
s32 ret_val = E1000_SUCCESS;
u32 ctrl;
DEBUGFUNC("e1000_reset_hw_82542");
if (hw->revision_id == E1000_REVISION_2) {
DEBUGOUT("Disabling MWI on 82542 rev 2\n");
e1000_pci_clear_mwi(hw);
}
DEBUGOUT("Masking off all interrupts\n");
E1000_WRITE_REG(hw, E1000_IMC, 0xffffffff);
E1000_WRITE_REG(hw, E1000_RCTL, 0);
E1000_WRITE_REG(hw, E1000_TCTL, E1000_TCTL_PSP);
E1000_WRITE_FLUSH(hw);
/*
* Delay to allow any outstanding PCI transactions to complete before
* resetting the device
*/
msec_delay(10);
ctrl = E1000_READ_REG(hw, E1000_CTRL);
DEBUGOUT("Issuing a global reset to 82542/82543 MAC\n");
E1000_WRITE_REG(hw, E1000_CTRL, ctrl | E1000_CTRL_RST);
hw->nvm.ops.reload(hw);
msec_delay(2);
E1000_WRITE_REG(hw, E1000_IMC, 0xffffffff);
E1000_READ_REG(hw, E1000_ICR);
if (hw->revision_id == E1000_REVISION_2) {
if (bus->pci_cmd_word & CMD_MEM_WRT_INVALIDATE)
e1000_pci_set_mwi(hw);
}
return ret_val;
}
/**
* e1000_setup_fiber_link_82543 - Setup link for fiber
* @hw: pointer to the HW structure
*
* Configures collision distance and flow control for fiber links. Upon
* successful setup, poll for link.
**/
static s32 e1000_setup_fiber_link_82543(struct e1000_hw *hw)
{
u32 ctrl;
s32 ret_val;
DEBUGFUNC("e1000_setup_fiber_link_82543");
ctrl = E1000_READ_REG(hw, E1000_CTRL);
/* Take the link out of reset */
ctrl &= ~E1000_CTRL_LRST;
e1000_config_collision_dist_generic(hw);
ret_val = e1000_commit_fc_settings_generic(hw);
if (ret_val)
goto out;
DEBUGOUT("Auto-negotiation enabled\n");
E1000_WRITE_REG(hw, E1000_CTRL, ctrl);
E1000_WRITE_FLUSH(hw);
msec_delay(1);
/*
* For these adapters, the SW definable pin 1 is cleared when the
* optics detect a signal. If we have a signal, then poll for a
* "Link-Up" indication.
*/
if (!(E1000_READ_REG(hw, E1000_CTRL) & E1000_CTRL_SWDPIN1)) {
ret_val = e1000_poll_fiber_serdes_link_generic(hw);
} else {
DEBUGOUT("No signal detected\n");
}
out:
return ret_val;
}
/**
* ixgbe_setup_mac_link_multispeed_fixed_fiber - Set MAC link speed
* @hw: pointer to hardware structure
* @speed: new link speed
* @autoneg: true if autonegotiation enabled
* @autoneg_wait_to_complete: true when waiting for completion is needed
*
* Set the link speed in the AUTOC register and restarts link.
**/
static s32
ixgbe_setup_mac_link_multispeed_fixed_fiber(struct ixgbe_hw *hw,
ixgbe_link_speed speed, bool autoneg,
bool autoneg_wait_to_complete)
{
s32 status = IXGBE_SUCCESS;
ixgbe_link_speed link_speed = IXGBE_LINK_SPEED_UNKNOWN;
ixgbe_link_speed highest_link_speed = IXGBE_LINK_SPEED_UNKNOWN;
u32 speedcnt = 0;
u32 esdp_reg = IXGBE_READ_REG(hw, IXGBE_ESDP);
u32 i = 0;
bool link_up = false;
bool negotiation;
DEBUGFUNC("");
/* Mask off requested but non-supported speeds */
status = ixgbe_get_link_capabilities(hw, &link_speed, &negotiation);
if (status != IXGBE_SUCCESS)
return status;
speed &= link_speed;
/*
* Try each speed one by one, highest priority first. We do this in
* software because 10gb fiber doesn't support speed autonegotiation.
*/
if (speed & IXGBE_LINK_SPEED_10GB_FULL) {
speedcnt++;
highest_link_speed = IXGBE_LINK_SPEED_10GB_FULL;
/* If we already have link at this speed, just jump out */
status = ixgbe_check_link(hw, &link_speed, &link_up, false);
if (status != IXGBE_SUCCESS)
return status;
if ((link_speed == IXGBE_LINK_SPEED_10GB_FULL) && link_up)
goto out;
/* Set the module link speed */
ixgbe_set_fiber_fixed_speed(hw, IXGBE_LINK_SPEED_10GB_FULL);
/* Set the module link speed */
esdp_reg |= (IXGBE_ESDP_SDP5_DIR | IXGBE_ESDP_SDP5);
IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp_reg);
IXGBE_WRITE_FLUSH(hw);
/* Allow module to change analog characteristics (1G->10G) */
msec_delay(40);
status = ixgbe_setup_mac_link_82599(hw,
IXGBE_LINK_SPEED_10GB_FULL,
autoneg,
autoneg_wait_to_complete);
if (status != IXGBE_SUCCESS)
return status;
/* Flap the tx laser if it has not already been done */
ixgbe_flap_tx_laser(hw);
/*
* Wait for the controller to acquire link. Per IEEE 802.3ap,
* Section 73.10.2, we may have to wait up to 500ms if KR is
* attempted. 82599 uses the same timing for 10g SFI.
*/
for (i = 0; i < 5; i++) {
/* Wait for the link partner to also set speed */
msec_delay(100);
/* If we have link, just jump out */
status = ixgbe_check_link(hw, &link_speed,
&link_up, false);
if (status != IXGBE_SUCCESS)
return status;
if (link_up)
goto out;
}
}
if (speed & IXGBE_LINK_SPEED_1GB_FULL) {
speedcnt++;
if (highest_link_speed == IXGBE_LINK_SPEED_UNKNOWN)
highest_link_speed = IXGBE_LINK_SPEED_1GB_FULL;
/* If we already have link at this speed, just jump out */
status = ixgbe_check_link(hw, &link_speed, &link_up, false);
if (status != IXGBE_SUCCESS)
return status;
if ((link_speed == IXGBE_LINK_SPEED_1GB_FULL) && link_up)
goto out;
/* Set the module link speed */
ixgbe_set_fiber_fixed_speed(hw, IXGBE_LINK_SPEED_1GB_FULL);
/* Allow module to change analog characteristics (10G->1G) */
msec_delay(40);
status = ixgbe_setup_mac_link_82599(hw,
IXGBE_LINK_SPEED_1GB_FULL,
autoneg,
autoneg_wait_to_complete);
if (status != IXGBE_SUCCESS)
return status;
/* Flap the tx laser if it has not already been done */
ixgbe_flap_tx_laser(hw);
/* Wait for the link partner to also set speed */
msec_delay(100);
/* If we have link, just jump out */
status = ixgbe_check_link(hw, &link_speed, &link_up, false);
if (status != IXGBE_SUCCESS)
return status;
if (link_up)
goto out;
}
/*
* We didn't get link. Configure back to the highest speed we tried,
* (if there was more than one). We call ourselves back with just the
* single highest speed that the user requested.
*/
if (speedcnt > 1)
status = ixgbe_setup_mac_link_multispeed_fixed_fiber(hw,
highest_link_speed, autoneg, autoneg_wait_to_complete);
out:
/* Set autoneg_advertised value based on input link speed */
hw->phy.autoneg_advertised = 0;
if (speed & IXGBE_LINK_SPEED_10GB_FULL)
hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_10GB_FULL;
if (speed & IXGBE_LINK_SPEED_1GB_FULL)
hw->phy.autoneg_advertised |= IXGBE_LINK_SPEED_1GB_FULL;
return status;
}
/**
* ixgbe_reset_hw_X540 - Perform hardware reset
* @hw: pointer to hardware structure
*
* Resets the hardware by resetting the transmit and receive units, masks
* and clears all interrupts, and perform a reset.
**/
s32 ixgbe_reset_hw_X540(struct ixgbe_hw *hw)
{
s32 status;
u32 ctrl, i;
DEBUGFUNC("ixgbe_reset_hw_X540");
/* Call adapter stop to disable tx/rx and clear interrupts */
status = hw->mac.ops.stop_adapter(hw);
if (status != IXGBE_SUCCESS)
goto reset_hw_out;
/* flush pending Tx transactions */
ixgbe_clear_tx_pending(hw);
mac_reset_top:
ctrl = IXGBE_CTRL_RST;
ctrl |= IXGBE_READ_REG(hw, IXGBE_CTRL);
IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl);
IXGBE_WRITE_FLUSH(hw);
/* Poll for reset bit to self-clear indicating reset is complete */
for (i = 0; i < 10; i++) {
usec_delay(1);
ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
if (!(ctrl & IXGBE_CTRL_RST_MASK))
break;
}
if (ctrl & IXGBE_CTRL_RST_MASK) {
status = IXGBE_ERR_RESET_FAILED;
ERROR_REPORT1(IXGBE_ERROR_POLLING,
"Reset polling failed to complete.\n");
}
msec_delay(100);
/*
* Double resets are required for recovery from certain error
* conditions. Between resets, it is necessary to stall to allow time
* for any pending HW events to complete.
*/
if (hw->mac.flags & IXGBE_FLAGS_DOUBLE_RESET_REQUIRED) {
hw->mac.flags &= ~IXGBE_FLAGS_DOUBLE_RESET_REQUIRED;
goto mac_reset_top;
}
/* Set the Rx packet buffer size. */
IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(0), 384 << IXGBE_RXPBSIZE_SHIFT);
/* Store the permanent mac address */
hw->mac.ops.get_mac_addr(hw, hw->mac.perm_addr);
/*
* Store MAC address from RAR0, clear receive address registers, and
* clear the multicast table. Also reset num_rar_entries to 128,
* since we modify this value when programming the SAN MAC address.
*/
hw->mac.num_rar_entries = 128;
hw->mac.ops.init_rx_addrs(hw);
/* Store the permanent SAN mac address */
hw->mac.ops.get_san_mac_addr(hw, hw->mac.san_addr);
/* Add the SAN MAC address to the RAR only if it's a valid address */
if (ixgbe_validate_mac_addr(hw->mac.san_addr) == 0) {
hw->mac.ops.set_rar(hw, hw->mac.num_rar_entries - 1,
hw->mac.san_addr, 0, IXGBE_RAH_AV);
/* Save the SAN MAC RAR index */
hw->mac.san_mac_rar_index = hw->mac.num_rar_entries - 1;
/* Reserve the last RAR for the SAN MAC address */
hw->mac.num_rar_entries--;
}
/* Store the alternative WWNN/WWPN prefix */
hw->mac.ops.get_wwn_prefix(hw, &hw->mac.wwnn_prefix,
&hw->mac.wwpn_prefix);
reset_hw_out:
return status;
}
/**
* ixgbe_setup_mac_link_82598 - Configures MAC link settings
* @hw: pointer to hardware structure
*
* Configures link settings based on values in the ixgbe_hw struct.
* Restarts the link. Performs autonegotiation if needed.
**/
int32_t ixgbe_setup_mac_link_82598(struct ixgbe_hw *hw)
{
ixgbe_link_speed speed;
int link_up;
uint32_t autoc_reg;
uint32_t links_reg;
uint32_t i;
int32_t status = IXGBE_SUCCESS;
autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
if (hw->mac.link_settings_loaded) {
autoc_reg &= ~IXGBE_AUTOC_LMS_ATTACH_TYPE;
autoc_reg &= ~IXGBE_AUTOC_LMS_MASK;
autoc_reg |= hw->mac.link_attach_type;
autoc_reg |= hw->mac.link_mode_select;
IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg);
IXGBE_WRITE_FLUSH(hw);
msec_delay(50);
}
/* Restart link */
autoc_reg |= IXGBE_AUTOC_AN_RESTART;
IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg);
/* Only poll for autoneg to complete if specified to do so */
if (hw->phy.autoneg_wait_to_complete) {
if (hw->mac.link_mode_select == IXGBE_AUTOC_LMS_KX4_AN ||
hw->mac.link_mode_select == IXGBE_AUTOC_LMS_KX4_AN_1G_AN) {
links_reg = 0; /* Just in case Autoneg time = 0 */
for (i = 0; i < IXGBE_AUTO_NEG_TIME; i++) {
links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
if (links_reg & IXGBE_LINKS_KX_AN_COMP)
break;
msec_delay(100);
}
if (!(links_reg & IXGBE_LINKS_KX_AN_COMP)) {
status = IXGBE_ERR_AUTONEG_NOT_COMPLETE;
DEBUGOUT("Autonegotiation did not complete.\n");
}
}
}
/*
* We want to save off the original Flow Control configuration just in
* case we get disconnected and then reconnected into a different hub
* or switch with different Flow Control capabilities.
*/
hw->fc.original_type = hw->fc.type;
/*
* Set up the SerDes link if in 1Gb mode, otherwise just set up
* 10Gb flow control.
*/
hw->mac.ops.check_link(hw, &speed, &link_up, FALSE);
if (speed == IXGBE_LINK_SPEED_1GB_FULL)
status = ixgbe_setup_fiber_serdes_link_82598(hw);
else
ixgbe_setup_fc_82598(hw, 0);
/* Add delay to filter out noises during initial link setup */
msec_delay(50);
return status;
}
/**
* ixgbe_check_mac_link_82598 - Get link/speed status
* @hw: pointer to hardware structure
* @speed: pointer to link speed
* @link_up: TRUE is link is up, FALSE otherwise
* @link_up_wait_to_complete: int used to wait for link up or not
*
* Reads the links register to determine if link is up and the current speed
**/
int32_t ixgbe_check_mac_link_82598(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
int *link_up, int link_up_wait_to_complete)
{
uint32_t links_reg;
uint32_t i;
uint16_t link_reg, adapt_comp_reg;
if (hw->phy.type == ixgbe_phy_nl) {
hw->phy.ops.read_reg(hw, 1, IXGBE_TWINAX_DEV, &link_reg);
hw->phy.ops.read_reg(hw, 1, IXGBE_TWINAX_DEV, &link_reg);
hw->phy.ops.read_reg(hw, 0xC00C, IXGBE_TWINAX_DEV,
&adapt_comp_reg);
if (link_up_wait_to_complete) {
for (i = 0; i < IXGBE_LINK_UP_TIME; i++) {
if ((link_reg & (1 << 2)) &&
((adapt_comp_reg & 1) == 0)) {
*link_up = TRUE;
break;
} else {
*link_up = FALSE;
}
msec_delay(100);
hw->phy.ops.read_reg(hw, 1, IXGBE_TWINAX_DEV,
&link_reg);
hw->phy.ops.read_reg(hw, 0xC00C,
IXGBE_TWINAX_DEV,
&adapt_comp_reg);
}
} else {
if ((link_reg & (1 << 2)) &&
((adapt_comp_reg & 1) == 0))
*link_up = TRUE;
else
*link_up = FALSE;
}
if (*link_up == FALSE)
goto out;
}
links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
if (link_up_wait_to_complete) {
for (i = 0; i < IXGBE_LINK_UP_TIME; i++) {
if (links_reg & IXGBE_LINKS_UP) {
*link_up = TRUE;
break;
} else {
*link_up = FALSE;
}
msec_delay(100);
links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
}
} else {
if (links_reg & IXGBE_LINKS_UP)
*link_up = TRUE;
else
*link_up = FALSE;
}
if (links_reg & IXGBE_LINKS_SPEED)
*speed = IXGBE_LINK_SPEED_10GB_FULL;
else
*speed = IXGBE_LINK_SPEED_1GB_FULL;
out:
return IXGBE_SUCCESS;
}
/**
* e1000_init_phy_params_82543 - Init PHY func ptrs.
* @hw: pointer to the HW structure
**/
static s32 e1000_init_phy_params_82543(struct e1000_hw *hw)
{
struct e1000_phy_info *phy = &hw->phy;
s32 ret_val = E1000_SUCCESS;
DEBUGFUNC("e1000_init_phy_params_82543");
if (hw->phy.media_type != e1000_media_type_copper) {
phy->type = e1000_phy_none;
goto out;
} else {
phy->ops.power_up = e1000_power_up_phy_copper;
phy->ops.power_down = e1000_power_down_phy_copper;
}
phy->addr = 1;
phy->autoneg_mask = AUTONEG_ADVERTISE_SPEED_DEFAULT;
phy->reset_delay_us = 10000;
phy->type = e1000_phy_m88;
/* Function Pointers */
phy->ops.check_polarity = e1000_check_polarity_m88;
phy->ops.commit = e1000_phy_sw_reset_generic;
phy->ops.force_speed_duplex = e1000_phy_force_speed_duplex_82543;
phy->ops.get_cable_length = e1000_get_cable_length_m88;
phy->ops.get_cfg_done = e1000_get_cfg_done_generic;
phy->ops.read_reg = (hw->mac.type == e1000_82543)
? e1000_read_phy_reg_82543
: e1000_read_phy_reg_m88;
phy->ops.reset = (hw->mac.type == e1000_82543)
? e1000_phy_hw_reset_82543
: e1000_phy_hw_reset_generic;
phy->ops.write_reg = (hw->mac.type == e1000_82543)
? e1000_write_phy_reg_82543
: e1000_write_phy_reg_m88;
phy->ops.get_info = e1000_get_phy_info_m88;
/*
* The external PHY of the 82543 can be in a funky state.
* Resetting helps us read the PHY registers for acquiring
* the PHY ID.
*/
if (!e1000_init_phy_disabled_82543(hw)) {
ret_val = phy->ops.reset(hw);
if (ret_val) {
DEBUGOUT("Resetting PHY during init failed.\n");
goto out;
}
msec_delay(20);
}
ret_val = e1000_get_phy_id(hw);
if (ret_val)
goto out;
/* Verify phy id */
switch (hw->mac.type) {
case e1000_82543:
if (phy->id != M88E1000_E_PHY_ID) {
ret_val = -E1000_ERR_PHY;
goto out;
}
break;
case e1000_82544:
if (phy->id != M88E1000_I_PHY_ID) {
ret_val = -E1000_ERR_PHY;
goto out;
}
break;
default:
ret_val = -E1000_ERR_PHY;
goto out;
break;
}
out:
return ret_val;
}
/**
* e1000_host_interface_command - Writes buffer to host interface
* @hw: pointer to the HW structure
* @buffer: contains a command to write
* @length: the byte length of the buffer, must be multiple of 4 bytes
*
* Writes a buffer to the Host Interface. Upon success, returns E1000_SUCCESS
* else returns E1000_ERR_HOST_INTERFACE_COMMAND.
**/
s32 e1000_host_interface_command(struct e1000_hw *hw, u8 *buffer, u32 length)
{
u32 hicr, i;
s32 ret_val = E1000_SUCCESS;
DEBUGFUNC("e1000_host_interface_command");
if (!(hw->mac.arc_subsystem_valid)) {
DEBUGOUT("Hardware doesn't support host interface command.\n");
goto out;
}
if (!hw->mac.asf_firmware_present) {
DEBUGOUT("Firmware is not present.\n");
goto out;
}
if (length == 0 || length & 0x3 ||
length > E1000_HI_MAX_BLOCK_BYTE_LENGTH) {
DEBUGOUT("Buffer length failure.\n");
ret_val = -E1000_ERR_HOST_INTERFACE_COMMAND;
goto out;
}
/* Check that the host interface is enabled. */
hicr = E1000_READ_REG(hw, E1000_HICR);
if ((hicr & E1000_HICR_EN) == 0) {
DEBUGOUT("E1000_HOST_EN bit disabled.\n");
ret_val = -E1000_ERR_HOST_INTERFACE_COMMAND;
goto out;
}
/* Calculate length in DWORDs */
length >>= 2;
/*
* The device driver writes the relevant command block
* into the ram area.
*/
for (i = 0; i < length; i++)
E1000_WRITE_REG_ARRAY_DWORD(hw, E1000_HOST_IF, i,
*((u32 *)buffer + i));
/* Setting this bit tells the ARC that a new command is pending. */
E1000_WRITE_REG(hw, E1000_HICR, hicr | E1000_HICR_C);
for (i = 0; i < E1000_HI_COMMAND_TIMEOUT; i++) {
hicr = E1000_READ_REG(hw, E1000_HICR);
if (!(hicr & E1000_HICR_C))
break;
msec_delay(1);
}
/* Check command successful completion. */
if (i == E1000_HI_COMMAND_TIMEOUT ||
(!(E1000_READ_REG(hw, E1000_HICR) & E1000_HICR_SV))) {
DEBUGOUT("Command has failed with no status valid.\n");
ret_val = -E1000_ERR_HOST_INTERFACE_COMMAND;
goto out;
}
for (i = 0; i < length; i++)
*((u32 *)buffer + i) = E1000_READ_REG_ARRAY_DWORD(hw,
E1000_HOST_IF,
i);
out:
return ret_val;
}
/**
* ixgbe_configure_fiber_serdes_fc_82598 - Configure fiber flow control
* @hw: pointer to hardware structure
*
* Reads PCS registers and sets flow control settings, based on
* link-partner's abilities.
**/
int32_t ixgbe_configure_fiber_serdes_fc_82598(struct ixgbe_hw *hw)
{
int32_t ret_val = IXGBE_SUCCESS;
uint32_t pcs_anadv_reg, pcs_lpab_reg, pcs_lstat_reg, i;
DEBUGFUNC("ixgbe_configure_fiber_serdes_fc_82598");
/* Check that autonegotiation has completed */
for (i = 0; i < FIBER_LINK_UP_LIMIT; i++) {
msec_delay(10);
pcs_lstat_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GLSTA);
if (pcs_lstat_reg & IXGBE_PCS1GLSTA_LINK_OK) {
if (pcs_lstat_reg & IXGBE_PCS1GLSTA_AN_COMPLETE) {
if (!(pcs_lstat_reg &
(IXGBE_PCS1GLSTA_AN_TIMED_OUT)))
hw->mac.autoneg_failed = 0;
else
hw->mac.autoneg_failed = 1;
break;
} else {
hw->mac.autoneg_failed = 1;
break;
}
}
}
if (hw->mac.autoneg_failed) {
/*
* AutoNeg failed to achieve a link, so we will turn
* flow control off.
*/
hw->fc.type = ixgbe_fc_none;
DEBUGOUT("Flow Control = NONE.\n");
ret_val = ixgbe_setup_fc_82598(hw, 0);
goto out;
}
/*
* Read the AN advertisement and LP ability registers and resolve
* local flow control settings accordingly
*/
pcs_anadv_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANA);
pcs_lpab_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANLP);
if ((pcs_anadv_reg & IXGBE_PCS1GANA_SYM_PAUSE) &&
(pcs_lpab_reg & IXGBE_PCS1GANA_SYM_PAUSE)) {
/*
* Now we need to check if the user selected Rx ONLY
* of pause frames. In this case, we had to advertise
* FULL flow control because we could not advertise RX
* ONLY. Hence, we must now check to see if we need to
* turn OFF the TRANSMISSION of PAUSE frames.
*/
if (hw->fc.original_type == ixgbe_fc_full) {
hw->fc.type = ixgbe_fc_full;
DEBUGOUT("Flow Control = FULL.\n");
} else {
hw->fc.type = ixgbe_fc_rx_pause;
DEBUGOUT("Flow Control = RX PAUSE frames only.\n");
}
} else if (!(pcs_anadv_reg & IXGBE_PCS1GANA_SYM_PAUSE) &&
(pcs_anadv_reg & IXGBE_PCS1GANA_ASM_PAUSE) &&
(pcs_lpab_reg & IXGBE_PCS1GANA_SYM_PAUSE) &&
(pcs_lpab_reg & IXGBE_PCS1GANA_ASM_PAUSE)) {
hw->fc.type = ixgbe_fc_tx_pause;
DEBUGOUT("Flow Control = TX PAUSE frames only.\n");
} else if ((pcs_anadv_reg & IXGBE_PCS1GANA_SYM_PAUSE) &&
(pcs_anadv_reg & IXGBE_PCS1GANA_ASM_PAUSE) &&
!(pcs_lpab_reg & IXGBE_PCS1GANA_SYM_PAUSE) &&
(pcs_lpab_reg & IXGBE_PCS1GANA_ASM_PAUSE)) {
hw->fc.type = ixgbe_fc_rx_pause;
DEBUGOUT("Flow Control = RX PAUSE frames only.\n");
} else {
hw->fc.type = ixgbe_fc_none;
DEBUGOUT("Flow Control = NONE.\n");
}
ret_val = ixgbe_setup_fc_82598(hw, 0);
if (ret_val) {
DEBUGOUT("Error forcing flow control settings\n");
goto out;
}
out:
return ret_val;
}
/**
* e1000_init_hw_82542 - Initialize hardware
* @hw: pointer to the HW structure
*
* This inits the hardware readying it for operation.
**/
static s32 e1000_init_hw_82542(struct e1000_hw *hw)
{
struct e1000_mac_info *mac = &hw->mac;
struct e1000_dev_spec_82542 *dev_spec = &hw->dev_spec._82542;
s32 ret_val = E1000_SUCCESS;
u32 ctrl;
u16 i;
DEBUGFUNC("e1000_init_hw_82542");
/* Disabling VLAN filtering */
E1000_WRITE_REG(hw, E1000_VET, 0);
mac->ops.clear_vfta(hw);
/* For 82542 (rev 2.0), disable MWI and put the receiver into reset */
if (hw->revision_id == E1000_REVISION_2) {
DEBUGOUT("Disabling MWI on 82542 rev 2.0\n");
e1000_pci_clear_mwi(hw);
E1000_WRITE_REG(hw, E1000_RCTL, E1000_RCTL_RST);
E1000_WRITE_FLUSH(hw);
msec_delay(5);
}
/* Setup the receive address. */
e1000_init_rx_addrs_generic(hw, mac->rar_entry_count);
/* For 82542 (rev 2.0), take the receiver out of reset and enable MWI */
if (hw->revision_id == E1000_REVISION_2) {
E1000_WRITE_REG(hw, E1000_RCTL, 0);
E1000_WRITE_FLUSH(hw);
msec_delay(1);
if (hw->bus.pci_cmd_word & CMD_MEM_WRT_INVALIDATE)
e1000_pci_set_mwi(hw);
}
/* 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);
/*
* 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 (dev_spec->dma_fairness) {
ctrl = E1000_READ_REG(hw, E1000_CTRL);
E1000_WRITE_REG(hw, E1000_CTRL, ctrl | E1000_CTRL_PRIOR);
}
/* Setup link and flow control */
ret_val = e1000_setup_link_82542(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_82542(hw);
return ret_val;
}
/**
* ixgbe_reset_hw_rev_0_82598 - Performs hardware reset
* @hw: pointer to hardware structure
*
* Resets the hardware by resetting the transmit and receive units, masks and
* clears all interrupts, performing a PHY reset, and performing a link (MAC)
* reset.
**/
int32_t ixgbe_reset_hw_rev_0_82598(struct ixgbe_hw *hw)
{
int32_t status = IXGBE_SUCCESS;
uint32_t ctrl;
uint32_t gheccr;
uint32_t autoc;
uint32_t i;
uint32_t resets;
/* Call adapter stop to disable tx/rx and clear interrupts */
hw->mac.ops.stop_adapter(hw);
/* Reset PHY */
hw->phy.ops.reset(hw);
for (resets = 0; resets < 10; resets++) {
/*
* Prevent the PCI-E bus from from hanging by disabling PCI-E
* master access and verify no pending requests before reset
*/
if (ixgbe_disable_pcie_master(hw) != IXGBE_SUCCESS) {
status = IXGBE_ERR_MASTER_REQUESTS_PENDING;
DEBUGOUT("PCI-E Master disable polling has failed.\n");
}
/*
* Issue global reset to the MAC. This needs to be a SW reset.
* If link reset is used, it might reset the MAC when mng is
* using it.
*/
ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
IXGBE_WRITE_REG(hw, IXGBE_CTRL, (ctrl | IXGBE_CTRL_RST));
IXGBE_WRITE_FLUSH(hw);
/*
* Poll for reset bit to self-clear indicating reset is
* complete
*/
for (i = 0; i < 10; i++) {
usec_delay(1);
ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
if (!(ctrl & IXGBE_CTRL_RST))
break;
}
if (ctrl & IXGBE_CTRL_RST) {
status = IXGBE_ERR_RESET_FAILED;
DEBUGOUT("Reset polling failed to complete.\n");
}
}
msec_delay(50);
gheccr = IXGBE_READ_REG(hw, IXGBE_GHECCR);
gheccr &= ~((1 << 21) | (1 << 18) | (1 << 9) | (1 << 6));
IXGBE_WRITE_REG(hw, IXGBE_GHECCR, gheccr);
/*
* AUTOC register which stores link settings gets cleared
* and reloaded from EEPROM after reset. We need to restore
* our stored value from init in case SW changed the attach
* type or speed. If this is the first time and link settings
* have not been stored, store default settings from AUTOC.
*/
autoc = IXGBE_READ_REG(hw, IXGBE_AUTOC);
if (hw->mac.link_settings_loaded) {
autoc &= ~(IXGBE_AUTOC_LMS_ATTACH_TYPE);
autoc &= ~(IXGBE_AUTOC_LMS_MASK);
autoc |= hw->mac.link_attach_type;
autoc |= hw->mac.link_mode_select;
IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc);
} else {
hw->mac.link_attach_type =
(autoc & IXGBE_AUTOC_LMS_ATTACH_TYPE);
hw->mac.link_mode_select = (autoc & IXGBE_AUTOC_LMS_MASK);
hw->mac.link_settings_loaded = TRUE;
}
/* Store the permanent mac address */
hw->mac.ops.get_mac_addr(hw, hw->mac.perm_addr);
return status;
}
/**
* ixgbe_reset_hw_82598 - Performs hardware reset
* @hw: pointer to hardware structure
*
* Resets the hardware by resetting the transmit and receive units, masks and
* clears all interrupts, performing a PHY reset, and performing a link (MAC)
* reset.
**/
int32_t ixgbe_reset_hw_82598(struct ixgbe_hw *hw)
{
int32_t status = IXGBE_SUCCESS;
uint32_t ctrl;
uint32_t gheccr;
uint32_t i;
uint32_t autoc;
uint8_t analog_val;
/* Call adapter stop to disable tx/rx and clear interrupts */
hw->mac.ops.stop_adapter(hw);
/*
* Power up the Atlas Tx lanes if they are currently powered down.
* Atlas Tx lanes are powered down for MAC loopback tests, but
* they are not automatically restored on reset.
*/
hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_LPBK, &analog_val);
if (analog_val & IXGBE_ATLAS_PDN_TX_REG_EN) {
/* Enable Tx Atlas so packets can be transmitted again */
hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_LPBK,
&analog_val);
analog_val &= ~IXGBE_ATLAS_PDN_TX_REG_EN;
hw->mac.ops.write_analog_reg8(hw, IXGBE_ATLAS_PDN_LPBK,
analog_val);
hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_10G,
&analog_val);
analog_val &= ~ IXGBE_ATLAS_PDN_TX_10G_QL_ALL;
hw->mac.ops.write_analog_reg8(hw, IXGBE_ATLAS_PDN_10G,
analog_val);
hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_1G,
&analog_val);
analog_val &= ~IXGBE_ATLAS_PDN_TX_1G_QL_ALL;
hw->mac.ops.write_analog_reg8(hw, IXGBE_ATLAS_PDN_1G,
analog_val);
hw->mac.ops.read_analog_reg8(hw, IXGBE_ATLAS_PDN_AN,
&analog_val);
analog_val &= ~IXGBE_ATLAS_PDN_TX_AN_QL_ALL;
hw->mac.ops.write_analog_reg8(hw, IXGBE_ATLAS_PDN_AN,
analog_val);
}
/* Reset PHY */
if (hw->phy.reset_disable == FALSE)
hw->phy.ops.reset(hw);
/*
* Prevent the PCI-E bus from from hanging by disabling PCI-E master
* access and verify no pending requests before reset
*/
if (ixgbe_disable_pcie_master(hw) != IXGBE_SUCCESS) {
status = IXGBE_ERR_MASTER_REQUESTS_PENDING;
DEBUGOUT("PCI-E Master disable polling has failed.\n");
}
/*
* Issue global reset to the MAC. This needs to be a SW reset.
* If link reset is used, it might reset the MAC when mng is using it
*/
ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
IXGBE_WRITE_REG(hw, IXGBE_CTRL, (ctrl | IXGBE_CTRL_RST));
IXGBE_WRITE_FLUSH(hw);
/* Poll for reset bit to self-clear indicating reset is complete */
for (i = 0; i < 10; i++) {
usec_delay(1);
ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
if (!(ctrl & IXGBE_CTRL_RST))
break;
}
if (ctrl & IXGBE_CTRL_RST) {
status = IXGBE_ERR_RESET_FAILED;
DEBUGOUT("Reset polling failed to complete.\n");
}
msec_delay(50);
gheccr = IXGBE_READ_REG(hw, IXGBE_GHECCR);
gheccr &= ~((1 << 21) | (1 << 18) | (1 << 9) | (1 << 6));
IXGBE_WRITE_REG(hw, IXGBE_GHECCR, gheccr);
/*
* AUTOC register which stores link settings gets cleared
* and reloaded from EEPROM after reset. We need to restore
* our stored value from init in case SW changed the attach
* type or speed. If this is the first time and link settings
* have not been stored, store default settings from AUTOC.
*/
autoc = IXGBE_READ_REG(hw, IXGBE_AUTOC);
if (hw->mac.link_settings_loaded) {
autoc &= ~(IXGBE_AUTOC_LMS_ATTACH_TYPE);
autoc &= ~(IXGBE_AUTOC_LMS_MASK);
autoc |= hw->mac.link_attach_type;
autoc |= hw->mac.link_mode_select;
IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc);
} else {
hw->mac.link_attach_type =
(autoc & IXGBE_AUTOC_LMS_ATTACH_TYPE);
hw->mac.link_mode_select = (autoc & IXGBE_AUTOC_LMS_MASK);
hw->mac.link_settings_loaded = TRUE;
}
/* Store the permanent mac address */
hw->mac.ops.get_mac_addr(hw, hw->mac.perm_addr);
return status;
}
static int
e1000_intr_test(struct e1000_adapter *adapter, uint64_t *data)
{
struct net_device *netdev = adapter->netdev;
uint32_t mask, i=0, shared_int = TRUE;
uint32_t irq = adapter->pdev->irq;
*data = 0;
/* Hook up test interrupt handler just for this test */
if(!request_irq(irq, &e1000_test_intr, 0, netdev->name, netdev)) {
shared_int = FALSE;
} else if(request_irq(irq, &e1000_test_intr, SA_SHIRQ,
netdev->name, netdev)){
*data = 1;
return -1;
}
/* Disable all the interrupts */
E1000_WRITE_REG(&adapter->hw, IMC, 0xFFFFFFFF);
msec_delay(10);
/* Test each interrupt */
for(; i < 10; i++) {
/* Interrupt to test */
mask = 1 << i;
if(!shared_int) {
/* Disable the interrupt to be reported in
* the cause register and then force the same
* interrupt and see if one gets posted. If
* an interrupt was posted to the bus, the
* test failed.
*/
adapter->test_icr = 0;
E1000_WRITE_REG(&adapter->hw, IMC, mask);
E1000_WRITE_REG(&adapter->hw, ICS, mask);
msec_delay(10);
if(adapter->test_icr & mask) {
*data = 3;
break;
}
}
/* Enable the interrupt to be reported in
* the cause register and then force the same
* interrupt and see if one gets posted. If
* an interrupt was not posted to the bus, the
* test failed.
*/
adapter->test_icr = 0;
E1000_WRITE_REG(&adapter->hw, IMS, mask);
E1000_WRITE_REG(&adapter->hw, ICS, mask);
msec_delay(10);
if(!(adapter->test_icr & mask)) {
*data = 4;
break;
}
if(!shared_int) {
/* Disable the other interrupts to be reported in
* the cause register and then force the other
* interrupts and see if any get posted. If
* an interrupt was posted to the bus, the
* test failed.
*/
adapter->test_icr = 0;
E1000_WRITE_REG(&adapter->hw, IMC,
(~mask & 0x00007FFF));
E1000_WRITE_REG(&adapter->hw, ICS,
(~mask & 0x00007FFF));
msec_delay(10);
if(adapter->test_icr) {
*data = 5;
break;
}
}
}
/* Disable all the interrupts */
E1000_WRITE_REG(&adapter->hw, IMC, 0xFFFFFFFF);
msec_delay(10);
/* Unhook test interrupt handler */
free_irq(irq, netdev);
return *data;
}
static int
e1000_intr_test(struct e1000_adapter *adapter, uint64_t *data)
{
struct net_device *netdev = adapter->netdev;
uint32_t icr, mask, i=0;
*data = 0;
/* Hook up test interrupt handler just for this test */
if(request_irq
(netdev->irq, &e1000_test_intr, SA_SHIRQ, netdev->name, netdev)) {
*data = 1;
return -1;
}
/* Disable all the interrupts */
E1000_WRITE_REG(&adapter->hw, IMC, 0xFFFFFFFF);
msec_delay(10);
/* Interrupts are disabled, so read interrupt cause
* register (icr) twice to verify that there are no interrupts
* pending. icr is clear on read.
*/
icr = E1000_READ_REG(&adapter->hw, ICR);
icr = E1000_READ_REG(&adapter->hw, ICR);
if(icr != 0) {
/* if icr is non-zero, there is no point
* running other interrupt tests.
*/
*data = 2;
i = 10;
}
/* Test each interrupt */
for(; i < 10; i++) {
/* Interrupt to test */
mask = 1 << i;
/* Disable the interrupt to be reported in
* the cause register and then force the same
* interrupt and see if one gets posted. If
* an interrupt was posted to the bus, the
* test failed.
*/
adapter->test_icr = 0;
E1000_WRITE_REG(&adapter->hw, IMC, mask);
E1000_WRITE_REG(&adapter->hw, ICS, mask);
msec_delay(10);
if(adapter->test_icr & mask) {
*data = 3;
break;
}
/* Enable the interrupt to be reported in
* the cause register and then force the same
* interrupt and see if one gets posted. If
* an interrupt was not posted to the bus, the
* test failed.
*/
adapter->test_icr = 0;
E1000_WRITE_REG(&adapter->hw, IMS, mask);
E1000_WRITE_REG(&adapter->hw, ICS, mask);
msec_delay(10);
if(!(adapter->test_icr & mask)) {
*data = 4;
break;
}
/* Disable the other interrupts to be reported in
* the cause register and then force the other
* interrupts and see if any get posted. If
* an interrupt was posted to the bus, the
* test failed.
*/
adapter->test_icr = 0;
E1000_WRITE_REG(&adapter->hw, IMC, ~mask);
E1000_WRITE_REG(&adapter->hw, ICS, ~mask);
msec_delay(10);
if(adapter->test_icr) {
*data = 5;
break;
}
}
/* Disable all the interrupts */
E1000_WRITE_REG(&adapter->hw, IMC, 0xFFFFFFFF);
msec_delay(10);
/* Unhook test interrupt handler */
free_irq(netdev->irq, netdev);
return *data;
}
static int
e1000_run_loopback_test(struct e1000_adapter *adapter)
{
struct e1000_desc_ring *txdr = &adapter->test_tx_ring;
struct e1000_desc_ring *rxdr = &adapter->test_rx_ring;
struct pci_dev *pdev = adapter->pdev;
int i, j, k, l, lc, good_cnt, ret_val=0;
unsigned long time;
E1000_WRITE_REG(&adapter->hw, RDT, rxdr->count - 1);
/* Calculate the loop count based on the largest descriptor ring
* The idea is to wrap the largest ring a number of times using 64
* send/receive pairs during each loop
*/
if(rxdr->count <= txdr->count)
lc = ((txdr->count / 64) * 2) + 1;
else
lc = ((rxdr->count / 64) * 2) + 1;
k = l = 0;
for(j = 0; j <= lc; j++) { /* loop count loop */
for(i = 0; i < 64; i++) { /* send the packets */
e1000_create_lbtest_frame(txdr->buffer_info[i].skb,
1024);
pci_dma_sync_single_for_device(pdev,
txdr->buffer_info[k].dma,
txdr->buffer_info[k].length,
PCI_DMA_TODEVICE);
if(unlikely(++k == txdr->count)) k = 0;
}
E1000_WRITE_REG(&adapter->hw, TDT, k);
msec_delay(200);
time = jiffies; /* set the start time for the receive */
good_cnt = 0;
do { /* receive the sent packets */
pci_dma_sync_single_for_cpu(pdev,
rxdr->buffer_info[l].dma,
rxdr->buffer_info[l].length,
PCI_DMA_FROMDEVICE);
ret_val = e1000_check_lbtest_frame(
rxdr->buffer_info[l].skb,
1024);
if(!ret_val)
good_cnt++;
if(unlikely(++l == rxdr->count)) l = 0;
/* time + 20 msecs (200 msecs on 2.4) is more than
* enough time to complete the receives, if it's
* exceeded, break and error off
*/
} while (good_cnt < 64 && jiffies < (time + 20));
if(good_cnt != 64) {
ret_val = 13; /* ret_val is the same as mis-compare */
break;
}
if(jiffies >= (time + 2)) {
ret_val = 14; /* error code for time out error */
break;
}
} /* end loop count loop */
return ret_val;
}
