diff options
Diffstat (limited to 'drivers/net/ethernet/intel/i40e/i40e_nvm.c')
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_nvm.c | 77 |
1 files changed, 21 insertions, 56 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_nvm.c b/drivers/net/ethernet/intel/i40e/i40e_nvm.c index 97e1bb30ef8a..73f95b081927 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_nvm.c +++ b/drivers/net/ethernet/intel/i40e/i40e_nvm.c @@ -1,7 +1,7 @@ /******************************************************************************* * * Intel Ethernet Controller XL710 Family Linux Driver - * Copyright(c) 2013 Intel Corporation. + * Copyright(c) 2013 - 2014 Intel Corporation. * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, @@ -12,9 +12,8 @@ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. + * You should have received a copy of the GNU General Public License along + * with this program. If not, see <http://www.gnu.org/licenses/>. * * The full GNU General Public License is included in this distribution in * the file called "COPYING". @@ -166,15 +165,15 @@ static i40e_status i40e_poll_sr_srctl_done_bit(struct i40e_hw *hw) } /** - * i40e_read_nvm_srctl - Reads Shadow RAM. + * i40e_read_nvm_word - Reads Shadow RAM * @hw: pointer to the HW structure. * @offset: offset of the Shadow RAM word to read (0x000000 - 0x001FFF). * @data: word read from the Shadow RAM. * * Reads 16 bit word from the Shadow RAM using the GLNVM_SRCTL register. **/ -static i40e_status i40e_read_nvm_srctl(struct i40e_hw *hw, u16 offset, - u16 *data) +i40e_status i40e_read_nvm_word(struct i40e_hw *hw, u16 offset, + u16 *data) { i40e_status ret_code = I40E_ERR_TIMEOUT; u32 sr_reg; @@ -211,29 +210,6 @@ read_nvm_exit: } /** - * i40e_read_nvm_word - Reads Shadow RAM word. - * @hw: pointer to the HW structure. - * @offset: offset of the Shadow RAM word to read (0x000000 - 0x001FFF). - * @data: word read from the Shadow RAM. - * - * Reads 16 bit word from the Shadow RAM. Each read is preceded - * with the NVM ownership taking and followed by the release. - **/ -i40e_status i40e_read_nvm_word(struct i40e_hw *hw, u16 offset, - u16 *data) -{ - i40e_status ret_code = 0; - - ret_code = i40e_acquire_nvm(hw, I40E_RESOURCE_READ); - if (!ret_code) { - ret_code = i40e_read_nvm_srctl(hw, offset, data); - i40e_release_nvm(hw); - } - - return ret_code; -} - -/** * i40e_read_nvm_buffer - Reads Shadow RAM buffer. * @hw: pointer to the HW structure. * @offset: offset of the Shadow RAM word to read (0x000000 - 0x001FFF). @@ -250,36 +226,25 @@ i40e_status i40e_read_nvm_buffer(struct i40e_hw *hw, u16 offset, { i40e_status ret_code = 0; u16 index, word; - u32 time; - ret_code = i40e_acquire_nvm(hw, I40E_RESOURCE_READ); - if (!ret_code) { - /* Loop thru the selected region. */ - for (word = 0; word < *words; word++) { - index = offset + word; - ret_code = i40e_read_nvm_srctl(hw, index, &data[word]); - if (ret_code) - break; - /* Check if we didn't exceeded the semaphore timeout. */ - time = rd32(hw, I40E_GLVFGEN_TIMER); - if (time >= hw->nvm.hw_semaphore_timeout) { - ret_code = I40E_ERR_TIMEOUT; - hw_dbg(hw, "NVM read error: timeout.\n"); - break; - } - } - /* Update the number of words read from the Shadow RAM. */ - *words = word; - /* Release the NVM ownership. */ - i40e_release_nvm(hw); + /* Loop thru the selected region. */ + for (word = 0; word < *words; word++) { + index = offset + word; + ret_code = i40e_read_nvm_word(hw, index, &data[word]); + if (ret_code) + break; } + /* Update the number of words read from the Shadow RAM. */ + *words = word; + return ret_code; } /** * i40e_calc_nvm_checksum - Calculates and returns the checksum * @hw: pointer to hardware structure + * @checksum: pointer to the checksum * * This function calculate SW Checksum that covers the whole 64kB shadow RAM * except the VPD and PCIe ALT Auto-load modules. The structure and size of VPD @@ -297,14 +262,14 @@ static i40e_status i40e_calc_nvm_checksum(struct i40e_hw *hw, u32 i = 0; /* read pointer to VPD area */ - ret_code = i40e_read_nvm_srctl(hw, I40E_SR_VPD_PTR, &vpd_module); + ret_code = i40e_read_nvm_word(hw, I40E_SR_VPD_PTR, &vpd_module); if (ret_code) { ret_code = I40E_ERR_NVM_CHECKSUM; goto i40e_calc_nvm_checksum_exit; } /* read pointer to PCIe Alt Auto-load module */ - ret_code = i40e_read_nvm_srctl(hw, I40E_SR_PCIE_ALT_AUTO_LOAD_PTR, + ret_code = i40e_read_nvm_word(hw, I40E_SR_PCIE_ALT_AUTO_LOAD_PTR, &pcie_alt_module); if (ret_code) { ret_code = I40E_ERR_NVM_CHECKSUM; @@ -331,7 +296,7 @@ static i40e_status i40e_calc_nvm_checksum(struct i40e_hw *hw, break; } - ret_code = i40e_read_nvm_srctl(hw, (u16)i, &word); + ret_code = i40e_read_nvm_word(hw, (u16)i, &word); if (ret_code) { ret_code = I40E_ERR_NVM_CHECKSUM; goto i40e_calc_nvm_checksum_exit; @@ -358,7 +323,7 @@ i40e_status i40e_validate_nvm_checksum(struct i40e_hw *hw, { i40e_status ret_code = 0; u16 checksum_sr = 0; - u16 checksum_local; + u16 checksum_local = 0; ret_code = i40e_acquire_nvm(hw, I40E_RESOURCE_READ); if (ret_code) @@ -371,7 +336,7 @@ i40e_status i40e_validate_nvm_checksum(struct i40e_hw *hw, /* Do not use i40e_read_nvm_word() because we do not want to take * the synchronization semaphores twice here. */ - i40e_read_nvm_srctl(hw, I40E_SR_SW_CHECKSUM_WORD, &checksum_sr); + i40e_read_nvm_word(hw, I40E_SR_SW_CHECKSUM_WORD, &checksum_sr); /* Verify read checksum from EEPROM is the same as * calculated checksum |