-/**
- * ixgbe_get_cs4227_status - Return CS4227 status
- * @hw: pointer to hardware structure
- *
- * Performs a diagnostic on the CS4227 chip. Returns an error if it is
- * not operating correctly.
- * This function assumes that the caller has acquired the proper semaphore.
- **/
-STATIC s32 ixgbe_get_cs4227_status(struct ixgbe_hw *hw)
-{
- s32 status;
- u16 value = 0;
- u16 reg_slice, reg_val;
- u8 retry;
-
- /* Check register reads. */
- for (retry = 0; retry < IXGBE_CS4227_RETRIES; ++retry) {
- status = ixgbe_read_cs4227(hw, IXGBE_CS4227_GLOBAL_ID_LSB,
- &value);
- if (status != IXGBE_SUCCESS)
- return status;
- if (value == IXGBE_CS4227_GLOBAL_ID_VALUE)
- break;
- msec_delay(IXGBE_CS4227_CHECK_DELAY);
- }
- if (value != IXGBE_CS4227_GLOBAL_ID_VALUE)
- return IXGBE_ERR_PHY;
-
- status = ixgbe_read_cs4227(hw, IXGBE_CS4227_SCRATCH, &value);
- if (status != IXGBE_SUCCESS)
- return status;
-
- /* If this is the first time after power-on, check the ucode.
- * Otherwise, this will disrupt link on all ports. Because we
- * can only do this the first time, we must check all ports,
- * not just our own.
- * While we are at it, set the LINE side to 10G SR, which is
- * what it needs to be regardless of the actual link.
- */
- if (value != IXGBE_CS4227_SCRATCH_VALUE) {
- reg_slice = IXGBE_CS4227_LINE_SPARE22_MSB;
- reg_val = IXGBE_CS4227_SPEED_10G;
- status = ixgbe_write_cs4227(hw, reg_slice, reg_val);
- if (status != IXGBE_SUCCESS)
- return status;
-
- reg_slice = IXGBE_CS4227_LINE_SPARE24_LSB;
- reg_val = (IXGBE_CS4227_EDC_MODE_SR << 1) | 0x1;
- status = ixgbe_write_cs4227(hw, reg_slice, reg_val);
- if (status != IXGBE_SUCCESS)
- return status;
-
- reg_slice = IXGBE_CS4227_HOST_SPARE24_LSB;
- reg_val = (IXGBE_CS4227_EDC_MODE_CX1 << 1) | 0x1;
- status = ixgbe_write_cs4227(hw, reg_slice, reg_val);
- if (status != IXGBE_SUCCESS)
- return status;
-
- reg_slice = IXGBE_CS4227_LINE_SPARE22_MSB + (1 << 12);
- reg_val = IXGBE_CS4227_SPEED_10G;
- status = ixgbe_write_cs4227(hw, reg_slice, reg_val);
- if (status != IXGBE_SUCCESS)
- return status;
-
- reg_slice = IXGBE_CS4227_LINE_SPARE24_LSB + (1 << 12);
- reg_val = (IXGBE_CS4227_EDC_MODE_SR << 1) | 0x1;
- status = ixgbe_write_cs4227(hw, reg_slice, reg_val);
- if (status != IXGBE_SUCCESS)
- return status;
-
- reg_slice = IXGBE_CS4227_HOST_SPARE24_LSB + (1 << 12);
- reg_val = (IXGBE_CS4227_EDC_MODE_CX1 << 1) | 0x1;
- status = ixgbe_write_cs4227(hw, reg_slice, reg_val);
- if (status != IXGBE_SUCCESS)
- return status;
-
- msec_delay(10);
- }
-
- /* Verify that the ucode is operational on all ports. */
- reg_slice = IXGBE_CS4227_LINE_SPARE24_LSB;
- reg_val = 0xFFFF;
- status = ixgbe_read_cs4227(hw, reg_slice, ®_val);
- if (status != IXGBE_SUCCESS)
- return status;
- if (reg_val != 0)
- return IXGBE_ERR_PHY;
-
- reg_slice = IXGBE_CS4227_HOST_SPARE24_LSB;
- reg_val = 0xFFFF;
- status = ixgbe_read_cs4227(hw, reg_slice, ®_val);
- if (status != IXGBE_SUCCESS)
- return status;
- if (reg_val != 0)
- return IXGBE_ERR_PHY;
-
- reg_slice = IXGBE_CS4227_LINE_SPARE24_LSB + (1 << 12);
- reg_val = 0xFFFF;
- status = ixgbe_read_cs4227(hw, reg_slice, ®_val);
- if (status != IXGBE_SUCCESS)
- return status;
- if (reg_val != 0)
- return IXGBE_ERR_PHY;
-
- reg_slice = IXGBE_CS4227_HOST_SPARE24_LSB + (1 << 12);
- reg_val = 0xFFFF;
- status = ixgbe_read_cs4227(hw, reg_slice, ®_val);
- if (status != IXGBE_SUCCESS)
- return status;
- if (reg_val != 0)
- return IXGBE_ERR_PHY;
-
- /* Set scratch indicating that the diagnostic was successful. */
- status = ixgbe_write_cs4227(hw, IXGBE_CS4227_SCRATCH,
- IXGBE_CS4227_SCRATCH_VALUE);
- if (status != IXGBE_SUCCESS)
- return status;
- status = ixgbe_read_cs4227(hw, IXGBE_CS4227_SCRATCH, &value);
- if (status != IXGBE_SUCCESS)
- return status;
- if (value != IXGBE_CS4227_SCRATCH_VALUE)
- return IXGBE_ERR_PHY;
-
- return IXGBE_SUCCESS;
-}
-