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Commit 8f601b2d authored by Jesse Brandeburg's avatar Jesse Brandeburg Committed by David S. Miller
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e1000: drop unused functionality for eeprom write/read 

eerd and eewr don't exist on pre PCIe devices
Signed-off-by: default avatarJesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: default avatarDon Skidmore <donald.c.skidmore@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 120a5d0d
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Showing with 3 additions and 120 deletions
drivers/net/e1000/e1000_hw.c
View file @ 8f601b2d
......@@ -49,11 +49,6 @@ static s32 e1000_id_led_init(struct e1000_hw *hw);
static void e1000_init_rx_addrs(struct e1000_hw *hw);
static s32 e1000_phy_igp_get_info(struct e1000_hw *hw,
struct e1000_phy_info *phy_info);
static s32 e1000_read_eeprom_eerd(struct e1000_hw *hw, u16 offset, u16 words,
u16 *data);
static s32 e1000_write_eeprom_eewr(struct e1000_hw *hw, u16 offset, u16 words,
u16 *data);
static s32 e1000_poll_eerd_eewr_done(struct e1000_hw *hw, int eerd);
static s32 e1000_phy_m88_get_info(struct e1000_hw *hw,
struct e1000_phy_info *phy_info);
static s32 e1000_set_d3_lplu_state(struct e1000_hw *hw, bool active);
......@@ -3339,8 +3334,6 @@ s32 e1000_init_eeprom_params(struct e1000_hw *hw)
eeprom->opcode_bits = 3;
eeprom->address_bits = 6;
eeprom->delay_usec = 50;
eeprom->use_eerd = false;
eeprom->use_eewr = false;
break;
case e1000_82540:
case e1000_82545:
......@@ -3357,8 +3350,6 @@ s32 e1000_init_eeprom_params(struct e1000_hw *hw)
eeprom->word_size = 64;
eeprom->address_bits = 6;
}
eeprom->use_eerd = false;
eeprom->use_eewr = false;
break;
case e1000_82541:
case e1000_82541_rev_2:
......@@ -3387,8 +3378,6 @@ s32 e1000_init_eeprom_params(struct e1000_hw *hw)
eeprom->address_bits = 6;
}
}
eeprom->use_eerd = false;
eeprom->use_eewr = false;
break;
default:
break;
......@@ -3773,15 +3762,9 @@ static s32 e1000_do_read_eeprom(struct e1000_hw *hw, u16 offset, u16 words,
* directly. In this case, we need to acquire the EEPROM so that
* FW or other port software does not interrupt.
*/
if (!hw->eeprom.use_eerd) {
/* Prepare the EEPROM for bit-bang reading */
if (e1000_acquire_eeprom(hw) != E1000_SUCCESS)
return -E1000_ERR_EEPROM;
}
/* Eerd register EEPROM access requires no eeprom aquire/release */
if (eeprom->use_eerd)
return e1000_read_eeprom_eerd(hw, offset, words, data);
/* Prepare the EEPROM for bit-bang reading */
if (e1000_acquire_eeprom(hw) != E1000_SUCCESS)
return -E1000_ERR_EEPROM;
/* Set up the SPI or Microwire EEPROM for bit-bang reading. We have
* acquired the EEPROM at this point, so any returns should release it */
......@@ -3836,101 +3819,6 @@ static s32 e1000_do_read_eeprom(struct e1000_hw *hw, u16 offset, u16 words,
return E1000_SUCCESS;
}
/**
* Reads a 16 bit word from the EEPROM using the EERD register.
*
* @hw: Struct containing variables accessed by shared code
* offset - offset of word in the EEPROM to read
* data - word read from the EEPROM
* words - number of words to read
*/
static s32 e1000_read_eeprom_eerd(struct e1000_hw *hw, u16 offset, u16 words,
u16 *data)
{
u32 i, eerd = 0;
s32 error = 0;
for (i = 0; i < words; i++) {
eerd = ((offset + i) << E1000_EEPROM_RW_ADDR_SHIFT) +
E1000_EEPROM_RW_REG_START;
ew32(EERD, eerd);
error = e1000_poll_eerd_eewr_done(hw, E1000_EEPROM_POLL_READ);
if (error) {
break;
}
data[i] = (er32(EERD) >> E1000_EEPROM_RW_REG_DATA);
}
return error;
}
/**
* Writes a 16 bit word from the EEPROM using the EEWR register.
*
* @hw: Struct containing variables accessed by shared code
* offset - offset of word in the EEPROM to read
* data - word read from the EEPROM
* words - number of words to read
*/
static s32 e1000_write_eeprom_eewr(struct e1000_hw *hw, u16 offset, u16 words,
u16 *data)
{
u32 register_value = 0;
u32 i = 0;
s32 error = 0;
for (i = 0; i < words; i++) {
register_value = (data[i] << E1000_EEPROM_RW_REG_DATA) |
((offset + i) << E1000_EEPROM_RW_ADDR_SHIFT) |
E1000_EEPROM_RW_REG_START;
error = e1000_poll_eerd_eewr_done(hw, E1000_EEPROM_POLL_WRITE);
if (error) {
break;
}
ew32(EEWR, register_value);
error = e1000_poll_eerd_eewr_done(hw, E1000_EEPROM_POLL_WRITE);
if (error) {
break;
}
}
return error;
}
/**
* Polls the status bit (bit 1) of the EERD to determine when the read is done.
*
* @hw: Struct containing variables accessed by shared code
*/
static s32 e1000_poll_eerd_eewr_done(struct e1000_hw *hw, int eerd)
{
u32 attempts = 100000;
u32 i, reg = 0;
s32 done = E1000_ERR_EEPROM;
for (i = 0; i < attempts; i++) {
if (eerd == E1000_EEPROM_POLL_READ)
reg = er32(EERD);
else
reg = er32(EEWR);
if (reg & E1000_EEPROM_RW_REG_DONE) {
done = E1000_SUCCESS;
break;
}
udelay(5);
}
return done;
}
/**
* e1000_validate_eeprom_checksum - Verifies that the EEPROM has a valid checksum
* @hw: Struct containing variables accessed by shared code
......@@ -4031,9 +3919,6 @@ static s32 e1000_do_write_eeprom(struct e1000_hw *hw, u16 offset, u16 words,
return -E1000_ERR_EEPROM;
}
if (eeprom->use_eewr)
return e1000_write_eeprom_eewr(hw, offset, words, data);
/* Prepare the EEPROM for writing */
if (e1000_acquire_eeprom(hw) != E1000_SUCCESS)
return -E1000_ERR_EEPROM;
......
drivers/net/e1000/e1000_hw.h
View file @ 8f601b2d
......@@ -256,8 +256,6 @@ struct e1000_eeprom_info {
u16 address_bits;
u16 delay_usec;
u16 page_size;
bool use_eerd;
bool use_eewr;
};
/* Flex ASF Information */
......
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