/** * igb_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 igb_get_hw_semaphore_i210(struct e1000_hw *hw)
{
u32 swsm;
s32 timeout = hw->nvm.word_size + 1;
s32 i = 0;
/* Get the SW semaphore */ while (i < timeout) {
swsm = rd32(E1000_SWSM); if (!(swsm & E1000_SWSM_SMBI)) break;
udelay(50);
i++;
}
if (i == timeout) { /* In rare circumstances, the SW semaphore may already be held * unintentionally. Clear the semaphore once before giving up.
*/ if (hw->dev_spec._82575.clear_semaphore_once) {
hw->dev_spec._82575.clear_semaphore_once = false;
igb_put_hw_semaphore(hw); for (i = 0; i < timeout; i++) {
swsm = rd32(E1000_SWSM); if (!(swsm & E1000_SWSM_SMBI)) break;
udelay(50);
}
}
/* If we do not have the semaphore here, we have to give up. */ if (i == timeout) {
hw_dbg("Driver can't access device - SMBI bit is set.\n"); return -E1000_ERR_NVM;
}
}
/* Get the FW semaphore. */ for (i = 0; i < timeout; i++) {
swsm = rd32(E1000_SWSM);
wr32(E1000_SWSM, swsm | E1000_SWSM_SWESMBI);
/* Semaphore acquired if bit latched */ if (rd32(E1000_SWSM) & E1000_SWSM_SWESMBI) break;
udelay(50);
}
if (i == timeout) { /* Release semaphores */
igb_put_hw_semaphore(hw);
hw_dbg("Driver can't access the NVM\n"); return -E1000_ERR_NVM;
}
return 0;
}
/** * igb_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 igb_acquire_nvm_i210(struct e1000_hw *hw)
{ return igb_acquire_swfw_sync_i210(hw, E1000_SWFW_EEP_SM);
}
/** * igb_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.
**/ staticvoid igb_release_nvm_i210(struct e1000_hw *hw)
{
igb_release_swfw_sync_i210(hw, E1000_SWFW_EEP_SM);
}
/** * igb_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 igb_acquire_swfw_sync_i210(struct e1000_hw *hw, u16 mask)
{
u32 swfw_sync;
u32 swmask = mask;
u32 fwmask = mask << 16;
s32 ret_val = 0;
s32 i = 0, timeout = 200; /* FIXME: find real value to use here */
while (i < timeout) { if (igb_get_hw_semaphore_i210(hw)) {
ret_val = -E1000_ERR_SWFW_SYNC; goto out;
}
swfw_sync = rd32(E1000_SW_FW_SYNC); if (!(swfw_sync & (fwmask | swmask))) break;
/* Firmware currently using resource (fwmask) */
igb_put_hw_semaphore(hw);
mdelay(5);
i++;
}
if (i == timeout) {
hw_dbg("Driver can't access resource, SW_FW_SYNC timeout.\n");
ret_val = -E1000_ERR_SWFW_SYNC; goto out;
}
/** * igb_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 igb_release_swfw_sync_i210(struct e1000_hw *hw, u16 mask)
{
u32 swfw_sync;
while (igb_get_hw_semaphore_i210(hw))
; /* Empty */
/** * igb_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.
**/ static s32 igb_read_nvm_srrd_i210(struct e1000_hw *hw, u16 offset, u16 words,
u16 *data)
{
s32 status = 0;
u16 i, count;
/* 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))) {
status = igb_read_nvm_eerd(hw, offset, count,
data + i);
hw->nvm.ops.release(hw);
} else {
status = E1000_ERR_SWFW_SYNC;
}
if (status) break;
}
return status;
}
/** * igb_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 igb_update_nvm_checksum is not called after this function , the * Shadow Ram will most likely contain an invalid checksum.
**/ static s32 igb_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 = 0;
/* 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)) {
hw_dbg("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;
wr32(E1000_SRWR, eewr);
for (k = 0; k < attempts; k++) { if (E1000_NVM_RW_REG_DONE &
rd32(E1000_SRWR)) {
ret_val = 0; break;
}
udelay(5);
}
/** * igb_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.
**/ static s32 igb_write_nvm_srwr_i210(struct e1000_hw *hw, u16 offset, u16 words,
u16 *data)
{
s32 status = 0;
u16 i, count;
/* 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))) {
status = igb_write_nvm_srwr(hw, offset, count,
data + i);
hw->nvm.ops.release(hw);
} else {
status = E1000_ERR_SWFW_SYNC;
}
if (status) break;
}
return status;
}
/** * igb_read_invm_word_i210 - 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.
**/ static s32 igb_read_invm_word_i210(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;
for (i = 0; i < E1000_INVM_SIZE; i++) {
invm_dword = rd32(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);
hw_dbg("Read INVM Word 0x%02x = %x\n",
address, *data);
status = 0; break;
}
}
} if (status)
hw_dbg("Requested word 0x%02x not found in OTP\n", address); return status;
}
/** * igb_read_invm_i210 - Read invm wrapper function for I210/I211 * @hw: pointer to the HW structure * @offset: offset to read from * @words: number of words to read (unused) * @data: pointer to the data read * * Wrapper function to return data formerly found in the NVM.
**/ static s32 igb_read_invm_i210(struct e1000_hw *hw, u16 offset,
u16 __always_unused words, u16 *data)
{
s32 ret_val = 0;
/* Only the MAC addr is required to be present in the iNVM */ switch (offset) { case NVM_MAC_ADDR:
ret_val = igb_read_invm_word_i210(hw, (u8)offset, &data[0]);
ret_val |= igb_read_invm_word_i210(hw, (u8)offset+1,
&data[1]);
ret_val |= igb_read_invm_word_i210(hw, (u8)offset+2,
&data[2]); if (ret_val)
hw_dbg("MAC Addr not found in iNVM\n"); break; case NVM_INIT_CTRL_2:
ret_val = igb_read_invm_word_i210(hw, (u8)offset, data); if (ret_val) {
*data = NVM_INIT_CTRL_2_DEFAULT_I211;
ret_val = 0;
} break; case NVM_INIT_CTRL_4:
ret_val = igb_read_invm_word_i210(hw, (u8)offset, data); if (ret_val) {
*data = NVM_INIT_CTRL_4_DEFAULT_I211;
ret_val = 0;
} break; case NVM_LED_1_CFG:
ret_val = igb_read_invm_word_i210(hw, (u8)offset, data); if (ret_val) {
*data = NVM_LED_1_CFG_DEFAULT_I211;
ret_val = 0;
} break; case NVM_LED_0_2_CFG:
ret_val = igb_read_invm_word_i210(hw, (u8)offset, data); if (ret_val) {
*data = NVM_LED_0_2_CFG_DEFAULT_I211;
ret_val = 0;
} break; case NVM_ID_LED_SETTINGS:
ret_val = igb_read_invm_word_i210(hw, (u8)offset, data); if (ret_val) {
*data = ID_LED_RESERVED_FFFF;
ret_val = 0;
} 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:
hw_dbg("NVM word 0x%02x is not mapped.\n", offset);
*data = NVM_RESERVED_WORD; break;
} return ret_val;
}
/** * igb_read_invm_version - Reads iNVM version and image type * @hw: pointer to the HW structure * @invm_ver: version structure for the version read * * Reads iNVM version and image type.
**/
s32 igb_read_invm_version(struct e1000_hw *hw, struct e1000_fw_version *invm_ver) {
u32 *record = NULL;
u32 *next_record = NULL;
u32 i = 0;
u32 invm_dword = 0;
u32 invm_blocks = E1000_INVM_SIZE - (E1000_INVM_ULT_BYTES_SIZE /
E1000_INVM_RECORD_SIZE_IN_BYTES);
u32 buffer[E1000_INVM_SIZE];
s32 status = -E1000_ERR_INVM_VALUE_NOT_FOUND;
u16 version = 0;
/* Read iNVM memory */ for (i = 0; i < E1000_INVM_SIZE; i++) {
invm_dword = rd32(E1000_INVM_DATA_REG(i));
buffer[i] = invm_dword;
}
/* Read version number */ for (i = 1; i < invm_blocks; i++) {
record = &buffer[invm_blocks - i];
next_record = &buffer[invm_blocks - i + 1];
/* Check if we have first version location used */ if ((i == 1) && ((*record & E1000_INVM_VER_FIELD_ONE) == 0)) {
version = 0;
status = 0; break;
} /* Check if we have second version location used */ elseif ((i == 1) &&
((*record & E1000_INVM_VER_FIELD_TWO) == 0)) {
version = FIELD_GET(E1000_INVM_VER_FIELD_ONE, *record);
status = 0; break;
} /* Check if we have odd version location * used and it is the last one used
*/ elseif ((((*record & E1000_INVM_VER_FIELD_ONE) == 0) &&
((*record & 0x3) == 0)) || (((*record & 0x3) != 0) &&
(i != 1))) {
version = FIELD_GET(E1000_INVM_VER_FIELD_TWO,
*next_record);
status = 0; break;
} /* Check if we have even version location * used and it is the last one used
*/ elseif (((*record & E1000_INVM_VER_FIELD_TWO) == 0) &&
((*record & 0x3) == 0)) {
version = FIELD_GET(E1000_INVM_VER_FIELD_ONE, *record);
status = 0; break;
}
}
if (!status) {
invm_ver->invm_major = FIELD_GET(E1000_INVM_MAJOR_MASK,
version);
invm_ver->invm_minor = version & E1000_INVM_MINOR_MASK;
} /* Read Image Type */ for (i = 1; i < invm_blocks; i++) {
record = &buffer[invm_blocks - i];
next_record = &buffer[invm_blocks - i + 1];
/* Check if we have image type in first location used */ if ((i == 1) && ((*record & E1000_INVM_IMGTYPE_FIELD) == 0)) {
invm_ver->invm_img_type = 0;
status = 0; break;
} /* Check if we have image type in first location used */ elseif ((((*record & 0x3) == 0) &&
((*record & E1000_INVM_IMGTYPE_FIELD) == 0)) ||
((((*record & 0x3) != 0) && (i != 1)))) {
invm_ver->invm_img_type =
FIELD_GET(E1000_INVM_IMGTYPE_FIELD,
*next_record);
status = 0; break;
}
} return status;
}
/** * igb_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.
**/ static s32 igb_validate_nvm_checksum_i210(struct e1000_hw *hw)
{
s32 status = 0;
s32 (*read_op_ptr)(struct e1000_hw *, u16, u16, u16 *);
if (!(hw->nvm.ops.acquire(hw))) {
/* 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 = igb_read_nvm_eerd;
status = igb_validate_nvm_checksum(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;
}
/** * igb_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.
**/ static s32 igb_update_nvm_checksum_i210(struct e1000_hw *hw)
{
s32 ret_val = 0;
u16 checksum = 0;
u16 i, nvm_data;
/* 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 = igb_read_nvm_eerd(hw, 0, 1, &nvm_data); if (ret_val) {
hw_dbg("EEPROM read failed\n"); goto out;
}
if (!(hw->nvm.ops.acquire(hw))) { /* 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 = igb_read_nvm_eerd(hw, i, 1, &nvm_data); if (ret_val) {
hw->nvm.ops.release(hw);
hw_dbg("NVM Read Error while updating checksum.\n"); goto out;
}
checksum += nvm_data;
}
checksum = (u16) NVM_SUM - checksum;
ret_val = igb_write_nvm_srwr(hw, NVM_CHECKSUM_REG, 1,
&checksum); if (ret_val) {
hw->nvm.ops.release(hw);
hw_dbg("NVM Write Error while updating checksum.\n"); goto out;
}
ret_val = igb_pool_flash_update_done_i210(hw); if (ret_val)
hw_dbg("Flash update time out\n"); else
hw_dbg("Flash update complete\n");
out: return ret_val;
}
/** * igb_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.
**/
s32 igb_valid_led_default_i210(struct e1000_hw *hw, u16 *data)
{
s32 ret_val;
/** * __igb_access_xmdio_reg - Read/write XMDIO register * @hw: pointer to the HW structure * @address: XMDIO address to program * @dev_addr: device address to program * @data: pointer to value to read/write from/to the XMDIO address * @read: boolean flag to indicate read or write
**/ static s32 __igb_access_xmdio_reg(struct e1000_hw *hw, u16 address,
u8 dev_addr, u16 *data, bool read)
{
s32 ret_val = 0;
ret_val = hw->phy.ops.write_reg(hw, E1000_MMDAC, dev_addr); if (ret_val) return ret_val;
ret_val = hw->phy.ops.write_reg(hw, E1000_MMDAAD, address); if (ret_val) return ret_val;
if (read)
ret_val = hw->phy.ops.read_reg(hw, E1000_MMDAAD, data); else
ret_val = hw->phy.ops.write_reg(hw, E1000_MMDAAD, *data); if (ret_val) return ret_val;
/* Recalibrate the device back to 0 */
ret_val = hw->phy.ops.write_reg(hw, E1000_MMDAC, 0); if (ret_val) return ret_val;
return ret_val;
}
/** * igb_read_xmdio_reg - Read XMDIO register * @hw: pointer to the HW structure * @addr: XMDIO address to program * @dev_addr: device address to program * @data: value to be read from the EMI address
**/
s32 igb_read_xmdio_reg(struct e1000_hw *hw, u16 addr, u8 dev_addr, u16 *data)
{ return __igb_access_xmdio_reg(hw, addr, dev_addr, data, true);
}
/** * igb_write_xmdio_reg - Write XMDIO register * @hw: pointer to the HW structure * @addr: XMDIO address to program * @dev_addr: device address to program * @data: value to be written to the XMDIO address
**/
s32 igb_write_xmdio_reg(struct e1000_hw *hw, u16 addr, u8 dev_addr, u16 data)
{ return __igb_access_xmdio_reg(hw, addr, dev_addr, &data, false);
}
/** * igb_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.
**/
s32 igb_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 = rd32(E1000_WUC);
mdicnfg = rd32(E1000_MDICNFG);
reg_val = mdicnfg & ~E1000_MDICNFG_EXT_MDIO;
wr32(E1000_MDICNFG, reg_val);
/* Get data from NVM, or set default */
ret_val = igb_read_invm_word_i210(hw, E1000_INVM_AUTOLOAD,
&nvm_word); if (ret_val)
nvm_word = E1000_INVM_DEFAULT_AL;
tmp_nvm = nvm_word | E1000_INVM_PLL_WO_VAL;
igb_write_phy_reg_82580(hw, I347AT4_PAGE_SELECT, E1000_PHY_PLL_FREQ_PAGE);
phy_word = E1000_PHY_PLL_UNCONF; for (i = 0; i < E1000_MAX_PLL_TRIES; i++) { /* check current state directly from internal PHY */
igb_read_phy_reg_82580(hw, E1000_PHY_PLL_FREQ_REG, &phy_word); if ((phy_word & E1000_PHY_PLL_UNCONF)
!= E1000_PHY_PLL_UNCONF) {
ret_val = 0; break;
} else {
ret_val = -E1000_ERR_PHY;
} /* directly reset the internal PHY */
ctrl = rd32(E1000_CTRL);
wr32(E1000_CTRL, ctrl|E1000_CTRL_PHY_RST);
/** * igb_get_cfg_done_i210 - Read config done bit * @hw: pointer to the HW structure * * Read the management control register for the config done bit for * completion status. NOTE: silicon which is EEPROM-less will fail trying * to read the config done bit, so an error is *ONLY* logged and returns * 0. If we were to return with error, EEPROM-less silicon * would not be able to be reset or change link.
**/
s32 igb_get_cfg_done_i210(struct e1000_hw *hw)
{
s32 timeout = PHY_CFG_TIMEOUT;
u32 mask = E1000_NVM_CFG_DONE_PORT_0;
while (timeout) { if (rd32(E1000_EEMNGCTL_I210) & mask) break;
usleep_range(1000, 2000);
timeout--;
} if (!timeout)
hw_dbg("MNG configuration cycle has not completed.\n");
return 0;
}
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