| Current Path : /usr/src/sys/dev/e1000/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //usr/src/sys/dev/e1000/e1000_i210.c |
/******************************************************************************
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/*$FreeBSD: release/9.1.0/sys/dev/e1000/e1000_i210.c 238262 2012-07-08 20:35:56Z jfv $*/
#include "e1000_api.h"
static s32 e1000_acquire_nvm_i210(struct e1000_hw *hw);
static void e1000_release_nvm_i210(struct e1000_hw *hw);
static s32 e1000_get_hw_semaphore_i210(struct e1000_hw *hw);
static void e1000_put_hw_semaphore_i210(struct e1000_hw *hw);
static s32 e1000_write_nvm_srwr(struct e1000_hw *hw, u16 offset, u16 words,
u16 *data);
static s32 e1000_pool_flash_update_done_i210(struct e1000_hw *hw);
static s32 e1000_valid_led_default_i210(struct e1000_hw *hw, u16 *data);
static s32 e1000_read_nvm_i211(struct e1000_hw *hw, u16 offset, u16 words,
u16 *data);
/**
* e1000_acquire_nvm_i210 - Request for access to EEPROM
* @hw: pointer to the HW structure
*
* Acquire the necessary semaphores for exclusive access to the EEPROM.
* Set the EEPROM access request bit and wait for EEPROM access grant bit.
* Return successful if access grant bit set, else clear the request for
* EEPROM access and return -E1000_ERR_NVM (-1).
**/
static s32 e1000_acquire_nvm_i210(struct e1000_hw *hw)
{
s32 ret_val;
DEBUGFUNC("e1000_acquire_nvm_i210");
ret_val = e1000_acquire_swfw_sync_i210(hw, E1000_SWFW_EEP_SM);
return ret_val;
}
/**
* e1000_release_nvm_i210 - Release exclusive access to EEPROM
* @hw: pointer to the HW structure
*
* Stop any current commands to the EEPROM and clear the EEPROM request bit,
* then release the semaphores acquired.
**/
static void e1000_release_nvm_i210(struct e1000_hw *hw)
{
DEBUGFUNC("e1000_release_nvm_i210");
e1000_release_swfw_sync_i210(hw, E1000_SWFW_EEP_SM);
}
/**
* e1000_acquire_swfw_sync_i210 - Acquire SW/FW semaphore
* @hw: pointer to the HW structure
* @mask: specifies which semaphore to acquire
*
* Acquire the SW/FW semaphore to access the PHY or NVM. The mask
* will also specify which port we're acquiring the lock for.
**/
s32 e1000_acquire_swfw_sync_i210(struct e1000_hw *hw, u16 mask)
{
u32 swfw_sync;
u32 swmask = mask;
u32 fwmask = mask << 16;
s32 ret_val = E1000_SUCCESS;
s32 i = 0, timeout = 200; /* FIXME: find real value to use here */
DEBUGFUNC("e1000_acquire_swfw_sync_i210");
while (i < timeout) {
if (e1000_get_hw_semaphore_i210(hw)) {
ret_val = -E1000_ERR_SWFW_SYNC;
goto out;
}
swfw_sync = E1000_READ_REG(hw, E1000_SW_FW_SYNC);
if (!(swfw_sync & fwmask))
break;
/*
* Firmware currently using resource (fwmask)
*/
e1000_put_hw_semaphore_i210(hw);
msec_delay_irq(5);
i++;
}
if (i == timeout) {
DEBUGOUT("Driver can't access resource, SW_FW_SYNC timeout.\n");
ret_val = -E1000_ERR_SWFW_SYNC;
goto out;
}
swfw_sync |= swmask;
E1000_WRITE_REG(hw, E1000_SW_FW_SYNC, swfw_sync);
e1000_put_hw_semaphore_i210(hw);
out:
return ret_val;
}
/**
* e1000_release_swfw_sync_i210 - Release SW/FW semaphore
* @hw: pointer to the HW structure
* @mask: specifies which semaphore to acquire
*
* Release the SW/FW semaphore used to access the PHY or NVM. The mask
* will also specify which port we're releasing the lock for.
**/
void e1000_release_swfw_sync_i210(struct e1000_hw *hw, u16 mask)
{
u32 swfw_sync;
DEBUGFUNC("e1000_release_swfw_sync_i210");
while (e1000_get_hw_semaphore_i210(hw) != E1000_SUCCESS)
; /* Empty */
swfw_sync = E1000_READ_REG(hw, E1000_SW_FW_SYNC);
swfw_sync &= ~mask;
E1000_WRITE_REG(hw, E1000_SW_FW_SYNC, swfw_sync);
e1000_put_hw_semaphore_i210(hw);
}
/**
* e1000_get_hw_semaphore_i210 - Acquire hardware semaphore
* @hw: pointer to the HW structure
*
* Acquire the HW semaphore to access the PHY or NVM
**/
static s32 e1000_get_hw_semaphore_i210(struct e1000_hw *hw)
{
u32 swsm;
s32 ret_val = E1000_SUCCESS;
s32 timeout = hw->nvm.word_size + 1;
s32 i = 0;
DEBUGFUNC("e1000_get_hw_semaphore_i210");
/* Get the FW semaphore. */
for (i = 0; i < timeout; i++) {
swsm = E1000_READ_REG(hw, E1000_SWSM);
E1000_WRITE_REG(hw, E1000_SWSM, swsm | E1000_SWSM_SWESMBI);
/* Semaphore acquired if bit latched */
if (E1000_READ_REG(hw, E1000_SWSM) & E1000_SWSM_SWESMBI)
break;
usec_delay(50);
}
if (i == timeout) {
/* Release semaphores */
e1000_put_hw_semaphore_generic(hw);
DEBUGOUT("Driver can't access the NVM\n");
ret_val = -E1000_ERR_NVM;
goto out;
}
out:
return ret_val;
}
/**
* e1000_put_hw_semaphore_i210 - Release hardware semaphore
* @hw: pointer to the HW structure
*
* Release hardware semaphore used to access the PHY or NVM
**/
static void e1000_put_hw_semaphore_i210(struct e1000_hw *hw)
{
u32 swsm;
DEBUGFUNC("e1000_put_hw_semaphore_i210");
swsm = E1000_READ_REG(hw, E1000_SWSM);
swsm &= ~E1000_SWSM_SWESMBI;
E1000_WRITE_REG(hw, E1000_SWSM, swsm);
}
/**
* e1000_read_nvm_srrd_i210 - Reads Shadow Ram using EERD register
* @hw: pointer to the HW structure
* @offset: offset of word in the Shadow Ram to read
* @words: number of words to read
* @data: word read from the Shadow Ram
*
* Reads a 16 bit word from the Shadow Ram using the EERD register.
* Uses necessary synchronization semaphores.
**/
s32 e1000_read_nvm_srrd_i210(struct e1000_hw *hw, u16 offset, u16 words,
u16 *data)
{
s32 status = E1000_SUCCESS;
u16 i, count;
DEBUGFUNC("e1000_read_nvm_srrd_i210");
/* We cannot hold synchronization semaphores for too long,
* because of forceful takeover procedure. However it is more efficient
* to read in bursts than synchronizing access for each word. */
for (i = 0; i < words; i += E1000_EERD_EEWR_MAX_COUNT) {
count = (words - i) / E1000_EERD_EEWR_MAX_COUNT > 0 ?
E1000_EERD_EEWR_MAX_COUNT : (words - i);
if (hw->nvm.ops.acquire(hw) == E1000_SUCCESS) {
status = e1000_read_nvm_eerd(hw, offset, count,
data + i);
hw->nvm.ops.release(hw);
} else {
status = E1000_ERR_SWFW_SYNC;
}
if (status != E1000_SUCCESS)
break;
}
return status;
}
/**
* e1000_write_nvm_srwr_i210 - Write to Shadow RAM using EEWR
* @hw: pointer to the HW structure
* @offset: offset within the Shadow RAM to be written to
* @words: number of words to write
* @data: 16 bit word(s) to be written to the Shadow RAM
*
* Writes data to Shadow RAM at offset using EEWR register.
*
* If e1000_update_nvm_checksum is not called after this function , the
* data will not be committed to FLASH and also Shadow RAM will most likely
* contain an invalid checksum.
*
* If error code is returned, data and Shadow RAM may be inconsistent - buffer
* partially written.
**/
s32 e1000_write_nvm_srwr_i210(struct e1000_hw *hw, u16 offset, u16 words,
u16 *data)
{
s32 status = E1000_SUCCESS;
u16 i, count;
DEBUGFUNC("e1000_write_nvm_srwr_i210");
/* We cannot hold synchronization semaphores for too long,
* because of forceful takeover procedure. However it is more efficient
* to write in bursts than synchronizing access for each word. */
for (i = 0; i < words; i += E1000_EERD_EEWR_MAX_COUNT) {
count = (words - i) / E1000_EERD_EEWR_MAX_COUNT > 0 ?
E1000_EERD_EEWR_MAX_COUNT : (words - i);
if (hw->nvm.ops.acquire(hw) == E1000_SUCCESS) {
status = e1000_write_nvm_srwr(hw, offset, count,
data + i);
hw->nvm.ops.release(hw);
} else {
status = E1000_ERR_SWFW_SYNC;
}
if (status != E1000_SUCCESS)
break;
}
return status;
}
/**
* e1000_write_nvm_srwr - Write to Shadow Ram using EEWR
* @hw: pointer to the HW structure
* @offset: offset within the Shadow Ram to be written to
* @words: number of words to write
* @data: 16 bit word(s) to be written to the Shadow Ram
*
* Writes data to Shadow Ram at offset using EEWR register.
*
* If e1000_update_nvm_checksum is not called after this function , the
* Shadow Ram will most likely contain an invalid checksum.
**/
static s32 e1000_write_nvm_srwr(struct e1000_hw *hw, u16 offset, u16 words,
u16 *data)
{
struct e1000_nvm_info *nvm = &hw->nvm;
u32 i, k, eewr = 0;
u32 attempts = 100000;
s32 ret_val = E1000_SUCCESS;
DEBUGFUNC("e1000_write_nvm_srwr");
/*
* A check for invalid values: offset too large, too many words,
* too many words for the offset, and not enough words.
*/
if ((offset >= nvm->word_size) || (words > (nvm->word_size - offset)) ||
(words == 0)) {
DEBUGOUT("nvm parameter(s) out of bounds\n");
ret_val = -E1000_ERR_NVM;
goto out;
}
for (i = 0; i < words; i++) {
eewr = ((offset+i) << E1000_NVM_RW_ADDR_SHIFT) |
(data[i] << E1000_NVM_RW_REG_DATA) |
E1000_NVM_RW_REG_START;
E1000_WRITE_REG(hw, E1000_SRWR, eewr);
for (k = 0; k < attempts; k++) {
if (E1000_NVM_RW_REG_DONE &
E1000_READ_REG(hw, E1000_SRWR)) {
ret_val = E1000_SUCCESS;
break;
}
usec_delay(5);
}
if (ret_val != E1000_SUCCESS) {
DEBUGOUT("Shadow RAM write EEWR timed out\n");
break;
}
}
out:
return ret_val;
}
/**
* e1000_read_nvm_i211 - Read NVM wrapper function for I211
* @hw: pointer to the HW structure
* @address: the word address (aka eeprom offset) to read
* @data: pointer to the data read
*
* Wrapper function to return data formerly found in the NVM.
**/
static s32 e1000_read_nvm_i211(struct e1000_hw *hw, u16 offset, u16 words,
u16 *data)
{
s32 ret_val = E1000_SUCCESS;
DEBUGFUNC("e1000_read_nvm_i211");
/* Only the MAC addr is required to be present in the iNVM */
switch (offset) {
case NVM_MAC_ADDR:
ret_val = e1000_read_invm_i211(hw, (u8)offset, &data[0]);
ret_val |= e1000_read_invm_i211(hw, (u8)offset+1, &data[1]);
ret_val |= e1000_read_invm_i211(hw, (u8)offset+2, &data[2]);
if (ret_val != E1000_SUCCESS)
DEBUGOUT("MAC Addr not found in iNVM\n");
break;
case NVM_ID_LED_SETTINGS:
case NVM_INIT_CTRL_2:
case NVM_INIT_CTRL_4:
case NVM_LED_1_CFG:
case NVM_LED_0_2_CFG:
e1000_read_invm_i211(hw, (u8)offset, data);
break;
case NVM_COMPAT:
*data = ID_LED_DEFAULT_I210;
break;
case NVM_SUB_DEV_ID:
*data = hw->subsystem_device_id;
break;
case NVM_SUB_VEN_ID:
*data = hw->subsystem_vendor_id;
break;
case NVM_DEV_ID:
*data = hw->device_id;
break;
case NVM_VEN_ID:
*data = hw->vendor_id;
break;
default:
DEBUGOUT1("NVM word 0x%02x is not mapped.\n", offset);
*data = NVM_RESERVED_WORD;
break;
}
return ret_val;
}
/**
* e1000_read_invm_i211 - Reads OTP
* @hw: pointer to the HW structure
* @address: the word address (aka eeprom offset) to read
* @data: pointer to the data read
*
* Reads 16-bit words from the OTP. Return error when the word is not
* stored in OTP.
**/
s32 e1000_read_invm_i211(struct e1000_hw *hw, u8 address, u16 *data)
{
s32 status = -E1000_ERR_INVM_VALUE_NOT_FOUND;
u32 invm_dword;
u16 i;
u8 record_type, word_address;
DEBUGFUNC("e1000_read_invm_i211");
for (i = 0; i < E1000_INVM_SIZE; i++) {
invm_dword = E1000_READ_REG(hw, E1000_INVM_DATA_REG(i));
/* Get record type */
record_type = INVM_DWORD_TO_RECORD_TYPE(invm_dword);
if (record_type == E1000_INVM_UNINITIALIZED_STRUCTURE)
break;
if (record_type == E1000_INVM_CSR_AUTOLOAD_STRUCTURE)
i += E1000_INVM_CSR_AUTOLOAD_DATA_SIZE_IN_DWORDS;
if (record_type == E1000_INVM_RSA_KEY_SHA256_STRUCTURE)
i += E1000_INVM_RSA_KEY_SHA256_DATA_SIZE_IN_DWORDS;
if (record_type == E1000_INVM_WORD_AUTOLOAD_STRUCTURE) {
word_address = INVM_DWORD_TO_WORD_ADDRESS(invm_dword);
if (word_address == address) {
*data = INVM_DWORD_TO_WORD_DATA(invm_dword);
DEBUGOUT2("Read INVM Word 0x%02x = %x",
address, *data);
status = E1000_SUCCESS;
break;
}
}
}
if (status != E1000_SUCCESS)
DEBUGOUT1("Requested word 0x%02x not found in OTP\n", address);
return status;
}
/**
* e1000_validate_nvm_checksum_i210 - Validate EEPROM checksum
* @hw: pointer to the HW structure
*
* Calculates the EEPROM checksum by reading/adding each word of the EEPROM
* and then verifies that the sum of the EEPROM is equal to 0xBABA.
**/
s32 e1000_validate_nvm_checksum_i210(struct e1000_hw *hw)
{
s32 status = E1000_SUCCESS;
s32 (*read_op_ptr)(struct e1000_hw *, u16, u16, u16 *);
DEBUGFUNC("e1000_validate_nvm_checksum_i210");
if (hw->nvm.ops.acquire(hw) == E1000_SUCCESS) {
/*
* Replace the read function with semaphore grabbing with
* the one that skips this for a while.
* We have semaphore taken already here.
*/
read_op_ptr = hw->nvm.ops.read;
hw->nvm.ops.read = e1000_read_nvm_eerd;
status = e1000_validate_nvm_checksum_generic(hw);
/* Revert original read operation. */
hw->nvm.ops.read = read_op_ptr;
hw->nvm.ops.release(hw);
} else {
status = E1000_ERR_SWFW_SYNC;
}
return status;
}
/**
* e1000_update_nvm_checksum_i210 - Update EEPROM checksum
* @hw: pointer to the HW structure
*
* Updates the EEPROM checksum by reading/adding each word of the EEPROM
* up to the checksum. Then calculates the EEPROM checksum and writes the
* value to the EEPROM. Next commit EEPROM data onto the Flash.
**/
s32 e1000_update_nvm_checksum_i210(struct e1000_hw *hw)
{
s32 ret_val = E1000_SUCCESS;
u16 checksum = 0;
u16 i, nvm_data;
DEBUGFUNC("e1000_update_nvm_checksum_i210");
/*
* Read the first word from the EEPROM. If this times out or fails, do
* not continue or we could be in for a very long wait while every
* EEPROM read fails
*/
ret_val = e1000_read_nvm_eerd(hw, 0, 1, &nvm_data);
if (ret_val != E1000_SUCCESS) {
DEBUGOUT("EEPROM read failed\n");
goto out;
}
if (hw->nvm.ops.acquire(hw) == E1000_SUCCESS) {
/*
* Do not use hw->nvm.ops.write, hw->nvm.ops.read
* because we do not want to take the synchronization
* semaphores twice here.
*/
for (i = 0; i < NVM_CHECKSUM_REG; i++) {
ret_val = e1000_read_nvm_eerd(hw, i, 1, &nvm_data);
if (ret_val) {
hw->nvm.ops.release(hw);
DEBUGOUT("NVM Read Error while updating checksum.\n");
goto out;
}
checksum += nvm_data;
}
checksum = (u16) NVM_SUM - checksum;
ret_val = e1000_write_nvm_srwr(hw, NVM_CHECKSUM_REG, 1,
&checksum);
if (ret_val != E1000_SUCCESS) {
hw->nvm.ops.release(hw);
DEBUGOUT("NVM Write Error while updating checksum.\n");
goto out;
}
hw->nvm.ops.release(hw);
ret_val = e1000_update_flash_i210(hw);
} else {
ret_val = E1000_ERR_SWFW_SYNC;
}
out:
return ret_val;
}
/**
* e1000_get_flash_presence_i210 - Check if flash device is detected.
* @hw: pointer to the HW structure
*
**/
static bool e1000_get_flash_presence_i210(struct e1000_hw *hw)
{
u32 eec = 0;
bool ret_val = FALSE;
DEBUGFUNC("e1000_get_flash_presence_i210");
eec = E1000_READ_REG(hw, E1000_EECD);
if (eec & E1000_EECD_FLASH_DETECTED_I210)
ret_val = TRUE;
return ret_val;
}
/**
* e1000_update_flash_i210 - Commit EEPROM to the flash
* @hw: pointer to the HW structure
*
**/
s32 e1000_update_flash_i210(struct e1000_hw *hw)
{
s32 ret_val = E1000_SUCCESS;
u32 flup;
DEBUGFUNC("e1000_update_flash_i210");
ret_val = e1000_pool_flash_update_done_i210(hw);
if (ret_val == -E1000_ERR_NVM) {
DEBUGOUT("Flash update time out\n");
goto out;
}
flup = E1000_READ_REG(hw, E1000_EECD) | E1000_EECD_FLUPD_I210;
E1000_WRITE_REG(hw, E1000_EECD, flup);
ret_val = e1000_pool_flash_update_done_i210(hw);
if (ret_val == E1000_SUCCESS)
DEBUGOUT("Flash update complete\n");
else
DEBUGOUT("Flash update time out\n");
out:
return ret_val;
}
/**
* e1000_pool_flash_update_done_i210 - Pool FLUDONE status.
* @hw: pointer to the HW structure
*
**/
s32 e1000_pool_flash_update_done_i210(struct e1000_hw *hw)
{
s32 ret_val = -E1000_ERR_NVM;
u32 i, reg;
DEBUGFUNC("e1000_pool_flash_update_done_i210");
for (i = 0; i < E1000_FLUDONE_ATTEMPTS; i++) {
reg = E1000_READ_REG(hw, E1000_EECD);
if (reg & E1000_EECD_FLUDONE_I210) {
ret_val = E1000_SUCCESS;
break;
}
usec_delay(5);
}
return ret_val;
}
/**
* e1000_init_nvm_params_i210 - Initialize i210 NVM function pointers
* @hw: pointer to the HW structure
*
* Initialize the i210 NVM parameters and function pointers.
**/
static s32 e1000_init_nvm_params_i210(struct e1000_hw *hw)
{
s32 ret_val = E1000_SUCCESS;
struct e1000_nvm_info *nvm = &hw->nvm;
DEBUGFUNC("e1000_init_nvm_params_i210");
ret_val = e1000_init_nvm_params_82575(hw);
nvm->ops.acquire = e1000_acquire_nvm_i210;
nvm->ops.release = e1000_release_nvm_i210;
nvm->ops.read = e1000_read_nvm_srrd_i210;
nvm->ops.write = e1000_write_nvm_srwr_i210;
nvm->ops.valid_led_default = e1000_valid_led_default_i210;
nvm->ops.validate = e1000_validate_nvm_checksum_i210;
nvm->ops.update = e1000_update_nvm_checksum_i210;
return ret_val;
}
/**
* e1000_init_nvm_params_i211 - Initialize i211 NVM function pointers
* @hw: pointer to the HW structure
*
* Initialize the NVM parameters and function pointers for i211.
**/
static s32 e1000_init_nvm_params_i211(struct e1000_hw *hw)
{
struct e1000_nvm_info *nvm = &hw->nvm;
DEBUGFUNC("e1000_init_nvm_params_i211");
nvm->ops.acquire = e1000_acquire_nvm_i210;
nvm->ops.release = e1000_release_nvm_i210;
nvm->ops.read = e1000_read_nvm_i211;
nvm->ops.valid_led_default = e1000_valid_led_default_i210;
nvm->ops.write = e1000_null_write_nvm;
nvm->ops.validate = e1000_null_ops_generic;
nvm->ops.update = e1000_null_ops_generic;
return E1000_SUCCESS;
}
/**
* e1000_init_function_pointers_i210 - Init func ptrs.
* @hw: pointer to the HW structure
*
* Called to initialize all function pointers and parameters.
**/
void e1000_init_function_pointers_i210(struct e1000_hw *hw)
{
e1000_init_function_pointers_82575(hw);
switch (hw->mac.type) {
case e1000_i210:
if (e1000_get_flash_presence_i210(hw))
hw->nvm.ops.init_params = e1000_init_nvm_params_i210;
else
hw->nvm.ops.init_params = e1000_init_nvm_params_i211;
break;
case e1000_i211:
hw->nvm.ops.init_params = e1000_init_nvm_params_i211;
break;
default:
break;
}
return;
}
/**
* e1000_valid_led_default_i210 - Verify a valid default LED config
* @hw: pointer to the HW structure
* @data: pointer to the NVM (EEPROM)
*
* Read the EEPROM for the current default LED configuration. If the
* LED configuration is not valid, set to a valid LED configuration.
**/
static s32 e1000_valid_led_default_i210(struct e1000_hw *hw, u16 *data)
{
s32 ret_val;
DEBUGFUNC("e1000_valid_led_default_i210");
ret_val = hw->nvm.ops.read(hw, NVM_ID_LED_SETTINGS, 1, data);
if (ret_val) {
DEBUGOUT("NVM Read Error\n");
goto out;
}
if (*data == ID_LED_RESERVED_0000 || *data == ID_LED_RESERVED_FFFF) {
switch (hw->phy.media_type) {
case e1000_media_type_internal_serdes:
*data = ID_LED_DEFAULT_I210_SERDES;
break;
case e1000_media_type_copper:
default:
*data = ID_LED_DEFAULT_I210;
break;
}
}
out:
return ret_val;
}