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path: root/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
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Diffstat (limited to 'drivers/net/ethernet/intel/ixgbe/ixgbe_common.c')
-rw-r--r--drivers/net/ethernet/intel/ixgbe/ixgbe_common.c580
1 files changed, 241 insertions, 339 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
index 4e5385a2a465..b5f484bf3fda 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c
@@ -122,8 +122,7 @@ static s32 ixgbe_setup_fc(struct ixgbe_hw *hw)
*/
if (hw->fc.strict_ieee && hw->fc.requested_mode == ixgbe_fc_rx_pause) {
hw_dbg(hw, "ixgbe_fc_rx_pause not valid in strict IEEE mode\n");
- ret_val = IXGBE_ERR_INVALID_LINK_SETTINGS;
- goto out;
+ return IXGBE_ERR_INVALID_LINK_SETTINGS;
}
/*
@@ -143,7 +142,7 @@ static s32 ixgbe_setup_fc(struct ixgbe_hw *hw)
/* some MAC's need RMW protection on AUTOC */
ret_val = hw->mac.ops.prot_autoc_read(hw, &locked, &reg_bp);
if (ret_val)
- goto out;
+ return ret_val;
/* only backplane uses autoc so fall though */
case ixgbe_media_type_fiber:
@@ -214,9 +213,7 @@ static s32 ixgbe_setup_fc(struct ixgbe_hw *hw)
break;
default:
hw_dbg(hw, "Flow control param set incorrectly\n");
- ret_val = IXGBE_ERR_CONFIG;
- goto out;
- break;
+ return IXGBE_ERR_CONFIG;
}
if (hw->mac.type != ixgbe_mac_X540) {
@@ -247,7 +244,7 @@ static s32 ixgbe_setup_fc(struct ixgbe_hw *hw)
*/
ret_val = hw->mac.ops.prot_autoc_write(hw, reg_bp, locked);
if (ret_val)
- goto out;
+ return ret_val;
} else if ((hw->phy.media_type == ixgbe_media_type_copper) &&
ixgbe_device_supports_autoneg_fc(hw)) {
@@ -256,7 +253,6 @@ static s32 ixgbe_setup_fc(struct ixgbe_hw *hw)
}
hw_dbg(hw, "Set up FC; IXGBE_AUTOC = 0x%08X\n", reg);
-out:
return ret_val;
}
@@ -295,12 +291,11 @@ s32 ixgbe_start_hw_generic(struct ixgbe_hw *hw)
/* Setup flow control */
ret_val = ixgbe_setup_fc(hw);
if (!ret_val)
- goto out;
+ return 0;
/* Clear adapter stopped flag */
hw->adapter_stopped = false;
-out:
return ret_val;
}
@@ -837,20 +832,16 @@ s32 ixgbe_init_eeprom_params_generic(struct ixgbe_hw *hw)
s32 ixgbe_write_eeprom_buffer_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
u16 words, u16 *data)
{
- s32 status = 0;
+ s32 status;
u16 i, count;
hw->eeprom.ops.init_params(hw);
- if (words == 0) {
- status = IXGBE_ERR_INVALID_ARGUMENT;
- goto out;
- }
+ if (words == 0)
+ return IXGBE_ERR_INVALID_ARGUMENT;
- if (offset + words > hw->eeprom.word_size) {
- status = IXGBE_ERR_EEPROM;
- goto out;
- }
+ if (offset + words > hw->eeprom.word_size)
+ return IXGBE_ERR_EEPROM;
/*
* The EEPROM page size cannot be queried from the chip. We do lazy
@@ -875,7 +866,6 @@ s32 ixgbe_write_eeprom_buffer_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
break;
}
-out:
return status;
}
@@ -900,64 +890,61 @@ static s32 ixgbe_write_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
/* Prepare the EEPROM for writing */
status = ixgbe_acquire_eeprom(hw);
+ if (status)
+ return status;
- if (status == 0) {
- if (ixgbe_ready_eeprom(hw) != 0) {
- ixgbe_release_eeprom(hw);
- status = IXGBE_ERR_EEPROM;
- }
+ if (ixgbe_ready_eeprom(hw) != 0) {
+ ixgbe_release_eeprom(hw);
+ return IXGBE_ERR_EEPROM;
}
- if (status == 0) {
- for (i = 0; i < words; i++) {
- ixgbe_standby_eeprom(hw);
+ for (i = 0; i < words; i++) {
+ ixgbe_standby_eeprom(hw);
+
+ /* Send the WRITE ENABLE command (8 bit opcode) */
+ ixgbe_shift_out_eeprom_bits(hw,
+ IXGBE_EEPROM_WREN_OPCODE_SPI,
+ IXGBE_EEPROM_OPCODE_BITS);
- /* Send the WRITE ENABLE command (8 bit opcode ) */
- ixgbe_shift_out_eeprom_bits(hw,
- IXGBE_EEPROM_WREN_OPCODE_SPI,
- IXGBE_EEPROM_OPCODE_BITS);
+ ixgbe_standby_eeprom(hw);
- ixgbe_standby_eeprom(hw);
+ /* Some SPI eeproms use the 8th address bit embedded
+ * in the opcode
+ */
+ if ((hw->eeprom.address_bits == 8) &&
+ ((offset + i) >= 128))
+ write_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI;
- /*
- * Some SPI eeproms use the 8th address bit embedded
- * in the opcode
- */
- if ((hw->eeprom.address_bits == 8) &&
- ((offset + i) >= 128))
- write_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI;
-
- /* Send the Write command (8-bit opcode + addr) */
- ixgbe_shift_out_eeprom_bits(hw, write_opcode,
- IXGBE_EEPROM_OPCODE_BITS);
- ixgbe_shift_out_eeprom_bits(hw, (u16)((offset + i) * 2),
- hw->eeprom.address_bits);
-
- page_size = hw->eeprom.word_page_size;
-
- /* Send the data in burst via SPI*/
- do {
- word = data[i];
- word = (word >> 8) | (word << 8);
- ixgbe_shift_out_eeprom_bits(hw, word, 16);
-
- if (page_size == 0)
- break;
-
- /* do not wrap around page */
- if (((offset + i) & (page_size - 1)) ==
- (page_size - 1))
- break;
- } while (++i < words);
-
- ixgbe_standby_eeprom(hw);
- usleep_range(10000, 20000);
- }
- /* Done with writing - release the EEPROM */
- ixgbe_release_eeprom(hw);
+ /* Send the Write command (8-bit opcode + addr) */
+ ixgbe_shift_out_eeprom_bits(hw, write_opcode,
+ IXGBE_EEPROM_OPCODE_BITS);
+ ixgbe_shift_out_eeprom_bits(hw, (u16)((offset + i) * 2),
+ hw->eeprom.address_bits);
+
+ page_size = hw->eeprom.word_page_size;
+
+ /* Send the data in burst via SPI */
+ do {
+ word = data[i];
+ word = (word >> 8) | (word << 8);
+ ixgbe_shift_out_eeprom_bits(hw, word, 16);
+
+ if (page_size == 0)
+ break;
+
+ /* do not wrap around page */
+ if (((offset + i) & (page_size - 1)) ==
+ (page_size - 1))
+ break;
+ } while (++i < words);
+
+ ixgbe_standby_eeprom(hw);
+ usleep_range(10000, 20000);
}
+ /* Done with writing - release the EEPROM */
+ ixgbe_release_eeprom(hw);
- return status;
+ return 0;
}
/**
@@ -971,19 +958,12 @@ static s32 ixgbe_write_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
**/
s32 ixgbe_write_eeprom_generic(struct ixgbe_hw *hw, u16 offset, u16 data)
{
- s32 status;
-
hw->eeprom.ops.init_params(hw);
- if (offset >= hw->eeprom.word_size) {
- status = IXGBE_ERR_EEPROM;
- goto out;
- }
-
- status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset, 1, &data);
+ if (offset >= hw->eeprom.word_size)
+ return IXGBE_ERR_EEPROM;
-out:
- return status;
+ return ixgbe_write_eeprom_buffer_bit_bang(hw, offset, 1, &data);
}
/**
@@ -998,20 +978,16 @@ out:
s32 ixgbe_read_eeprom_buffer_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
u16 words, u16 *data)
{
- s32 status = 0;
+ s32 status;
u16 i, count;
hw->eeprom.ops.init_params(hw);
- if (words == 0) {
- status = IXGBE_ERR_INVALID_ARGUMENT;
- goto out;
- }
+ if (words == 0)
+ return IXGBE_ERR_INVALID_ARGUMENT;
- if (offset + words > hw->eeprom.word_size) {
- status = IXGBE_ERR_EEPROM;
- goto out;
- }
+ if (offset + words > hw->eeprom.word_size)
+ return IXGBE_ERR_EEPROM;
/*
* We cannot hold synchronization semaphores for too long
@@ -1025,12 +1001,11 @@ s32 ixgbe_read_eeprom_buffer_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset + i,
count, &data[i]);
- if (status != 0)
- break;
+ if (status)
+ return status;
}
-out:
- return status;
+ return 0;
}
/**
@@ -1052,41 +1027,38 @@ static s32 ixgbe_read_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
/* Prepare the EEPROM for reading */
status = ixgbe_acquire_eeprom(hw);
+ if (status)
+ return status;
- if (status == 0) {
- if (ixgbe_ready_eeprom(hw) != 0) {
- ixgbe_release_eeprom(hw);
- status = IXGBE_ERR_EEPROM;
- }
+ if (ixgbe_ready_eeprom(hw) != 0) {
+ ixgbe_release_eeprom(hw);
+ return IXGBE_ERR_EEPROM;
}
- if (status == 0) {
- for (i = 0; i < words; i++) {
- ixgbe_standby_eeprom(hw);
- /*
- * Some SPI eeproms use the 8th address bit embedded
- * in the opcode
- */
- if ((hw->eeprom.address_bits == 8) &&
- ((offset + i) >= 128))
- read_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI;
-
- /* Send the READ command (opcode + addr) */
- ixgbe_shift_out_eeprom_bits(hw, read_opcode,
- IXGBE_EEPROM_OPCODE_BITS);
- ixgbe_shift_out_eeprom_bits(hw, (u16)((offset + i) * 2),
- hw->eeprom.address_bits);
-
- /* Read the data. */
- word_in = ixgbe_shift_in_eeprom_bits(hw, 16);
- data[i] = (word_in >> 8) | (word_in << 8);
- }
+ for (i = 0; i < words; i++) {
+ ixgbe_standby_eeprom(hw);
+ /* Some SPI eeproms use the 8th address bit embedded
+ * in the opcode
+ */
+ if ((hw->eeprom.address_bits == 8) &&
+ ((offset + i) >= 128))
+ read_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI;
- /* End this read operation */
- ixgbe_release_eeprom(hw);
+ /* Send the READ command (opcode + addr) */
+ ixgbe_shift_out_eeprom_bits(hw, read_opcode,
+ IXGBE_EEPROM_OPCODE_BITS);
+ ixgbe_shift_out_eeprom_bits(hw, (u16)((offset + i) * 2),
+ hw->eeprom.address_bits);
+
+ /* Read the data. */
+ word_in = ixgbe_shift_in_eeprom_bits(hw, 16);
+ data[i] = (word_in >> 8) | (word_in << 8);
}
- return status;
+ /* End this read operation */
+ ixgbe_release_eeprom(hw);
+
+ return 0;
}
/**
@@ -1100,19 +1072,12 @@ static s32 ixgbe_read_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
s32 ixgbe_read_eeprom_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
u16 *data)
{
- s32 status;
-
hw->eeprom.ops.init_params(hw);
- if (offset >= hw->eeprom.word_size) {
- status = IXGBE_ERR_EEPROM;
- goto out;
- }
-
- status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset, 1, data);
+ if (offset >= hw->eeprom.word_size)
+ return IXGBE_ERR_EEPROM;
-out:
- return status;
+ return ixgbe_read_eeprom_buffer_bit_bang(hw, offset, 1, data);
}
/**
@@ -1128,20 +1093,16 @@ s32 ixgbe_read_eerd_buffer_generic(struct ixgbe_hw *hw, u16 offset,
u16 words, u16 *data)
{
u32 eerd;
- s32 status = 0;
+ s32 status;
u32 i;
hw->eeprom.ops.init_params(hw);
- if (words == 0) {
- status = IXGBE_ERR_INVALID_ARGUMENT;
- goto out;
- }
+ if (words == 0)
+ return IXGBE_ERR_INVALID_ARGUMENT;
- if (offset >= hw->eeprom.word_size) {
- status = IXGBE_ERR_EEPROM;
- goto out;
- }
+ if (offset >= hw->eeprom.word_size)
+ return IXGBE_ERR_EEPROM;
for (i = 0; i < words; i++) {
eerd = ((offset + i) << IXGBE_EEPROM_RW_ADDR_SHIFT) |
@@ -1155,11 +1116,11 @@ s32 ixgbe_read_eerd_buffer_generic(struct ixgbe_hw *hw, u16 offset,
IXGBE_EEPROM_RW_REG_DATA);
} else {
hw_dbg(hw, "Eeprom read timed out\n");
- goto out;
+ return status;
}
}
-out:
- return status;
+
+ return 0;
}
/**
@@ -1175,7 +1136,7 @@ static s32 ixgbe_detect_eeprom_page_size_generic(struct ixgbe_hw *hw,
u16 offset)
{
u16 data[IXGBE_EEPROM_PAGE_SIZE_MAX];
- s32 status = 0;
+ s32 status;
u16 i;
for (i = 0; i < IXGBE_EEPROM_PAGE_SIZE_MAX; i++)
@@ -1185,12 +1146,12 @@ static s32 ixgbe_detect_eeprom_page_size_generic(struct ixgbe_hw *hw,
status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset,
IXGBE_EEPROM_PAGE_SIZE_MAX, data);
hw->eeprom.word_page_size = 0;
- if (status != 0)
- goto out;
+ if (status)
+ return status;
status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset, 1, data);
- if (status != 0)
- goto out;
+ if (status)
+ return status;
/*
* When writing in burst more than the actual page size
@@ -1200,8 +1161,7 @@ static s32 ixgbe_detect_eeprom_page_size_generic(struct ixgbe_hw *hw,
hw_dbg(hw, "Detected EEPROM page size = %d words.\n",
hw->eeprom.word_page_size);
-out:
- return status;
+ return 0;
}
/**
@@ -1230,20 +1190,16 @@ s32 ixgbe_write_eewr_buffer_generic(struct ixgbe_hw *hw, u16 offset,
u16 words, u16 *data)
{
u32 eewr;
- s32 status = 0;
+ s32 status;
u16 i;
hw->eeprom.ops.init_params(hw);
- if (words == 0) {
- status = IXGBE_ERR_INVALID_ARGUMENT;
- goto out;
- }
+ if (words == 0)
+ return IXGBE_ERR_INVALID_ARGUMENT;
- if (offset >= hw->eeprom.word_size) {
- status = IXGBE_ERR_EEPROM;
- goto out;
- }
+ if (offset >= hw->eeprom.word_size)
+ return IXGBE_ERR_EEPROM;
for (i = 0; i < words; i++) {
eewr = ((offset + i) << IXGBE_EEPROM_RW_ADDR_SHIFT) |
@@ -1251,22 +1207,21 @@ s32 ixgbe_write_eewr_buffer_generic(struct ixgbe_hw *hw, u16 offset,
IXGBE_EEPROM_RW_REG_START;
status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_WRITE);
- if (status != 0) {
+ if (status) {
hw_dbg(hw, "Eeprom write EEWR timed out\n");
- goto out;
+ return status;
}
IXGBE_WRITE_REG(hw, IXGBE_EEWR, eewr);
status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_WRITE);
- if (status != 0) {
+ if (status) {
hw_dbg(hw, "Eeprom write EEWR timed out\n");
- goto out;
+ return status;
}
}
-out:
- return status;
+ return 0;
}
/**
@@ -1294,7 +1249,6 @@ static s32 ixgbe_poll_eerd_eewr_done(struct ixgbe_hw *hw, u32 ee_reg)
{
u32 i;
u32 reg;
- s32 status = IXGBE_ERR_EEPROM;
for (i = 0; i < IXGBE_EERD_EEWR_ATTEMPTS; i++) {
if (ee_reg == IXGBE_NVM_POLL_READ)
@@ -1303,12 +1257,11 @@ static s32 ixgbe_poll_eerd_eewr_done(struct ixgbe_hw *hw, u32 ee_reg)
reg = IXGBE_READ_REG(hw, IXGBE_EEWR);
if (reg & IXGBE_EEPROM_RW_REG_DONE) {
- status = 0;
- break;
+ return 0;
}
udelay(5);
}
- return status;
+ return IXGBE_ERR_EEPROM;
}
/**
@@ -1320,47 +1273,42 @@ static s32 ixgbe_poll_eerd_eewr_done(struct ixgbe_hw *hw, u32 ee_reg)
**/
static s32 ixgbe_acquire_eeprom(struct ixgbe_hw *hw)
{
- s32 status = 0;
u32 eec;
u32 i;
if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) != 0)
- status = IXGBE_ERR_SWFW_SYNC;
-
- if (status == 0) {
- eec = IXGBE_READ_REG(hw, IXGBE_EEC);
+ return IXGBE_ERR_SWFW_SYNC;
- /* Request EEPROM Access */
- eec |= IXGBE_EEC_REQ;
- IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
+ eec = IXGBE_READ_REG(hw, IXGBE_EEC);
- for (i = 0; i < IXGBE_EEPROM_GRANT_ATTEMPTS; i++) {
- eec = IXGBE_READ_REG(hw, IXGBE_EEC);
- if (eec & IXGBE_EEC_GNT)
- break;
- udelay(5);
- }
+ /* Request EEPROM Access */
+ eec |= IXGBE_EEC_REQ;
+ IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
- /* Release if grant not acquired */
- if (!(eec & IXGBE_EEC_GNT)) {
- eec &= ~IXGBE_EEC_REQ;
- IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
- hw_dbg(hw, "Could not acquire EEPROM grant\n");
+ for (i = 0; i < IXGBE_EEPROM_GRANT_ATTEMPTS; i++) {
+ eec = IXGBE_READ_REG(hw, IXGBE_EEC);
+ if (eec & IXGBE_EEC_GNT)
+ break;
+ udelay(5);
+ }
- hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
- status = IXGBE_ERR_EEPROM;
- }
+ /* Release if grant not acquired */
+ if (!(eec & IXGBE_EEC_GNT)) {
+ eec &= ~IXGBE_EEC_REQ;
+ IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
+ hw_dbg(hw, "Could not acquire EEPROM grant\n");
- /* Setup EEPROM for Read/Write */
- if (status == 0) {
- /* Clear CS and SK */
- eec &= ~(IXGBE_EEC_CS | IXGBE_EEC_SK);
- IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
- IXGBE_WRITE_FLUSH(hw);
- udelay(1);
- }
+ hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
+ return IXGBE_ERR_EEPROM;
}
- return status;
+
+ /* Setup EEPROM for Read/Write */
+ /* Clear CS and SK */
+ eec &= ~(IXGBE_EEC_CS | IXGBE_EEC_SK);
+ IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
+ IXGBE_WRITE_FLUSH(hw);
+ udelay(1);
+ return 0;
}
/**
@@ -1371,7 +1319,6 @@ static s32 ixgbe_acquire_eeprom(struct ixgbe_hw *hw)
**/
static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw)
{
- s32 status = IXGBE_ERR_EEPROM;
u32 timeout = 2000;
u32 i;
u32 swsm;
@@ -1383,68 +1330,60 @@ static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw)
* set and we have the semaphore
*/
swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
- if (!(swsm & IXGBE_SWSM_SMBI)) {
- status = 0;
+ if (!(swsm & IXGBE_SWSM_SMBI))
break;
- }
- udelay(50);
+ usleep_range(50, 100);
}
if (i == timeout) {
hw_dbg(hw, "Driver can't access the Eeprom - SMBI Semaphore not granted.\n");
- /*
- * this release is particularly important because our attempts
+ /* this release is particularly important because our attempts
* above to get the semaphore may have succeeded, and if there
* was a timeout, we should unconditionally clear the semaphore
* bits to free the driver to make progress
*/
ixgbe_release_eeprom_semaphore(hw);
- udelay(50);
- /*
- * one last try
+ usleep_range(50, 100);
+ /* one last try
* If the SMBI bit is 0 when we read it, then the bit will be
* set and we have the semaphore
*/
swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
- if (!(swsm & IXGBE_SWSM_SMBI))
- status = 0;
+ if (swsm & IXGBE_SWSM_SMBI) {
+ hw_dbg(hw, "Software semaphore SMBI between device drivers not granted.\n");
+ return IXGBE_ERR_EEPROM;
+ }
}
/* Now get the semaphore between SW/FW through the SWESMBI bit */
- if (status == 0) {
- for (i = 0; i < timeout; i++) {
- swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
+ for (i = 0; i < timeout; i++) {
+ swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
- /* Set the SW EEPROM semaphore bit to request access */
- swsm |= IXGBE_SWSM_SWESMBI;
- IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm);
+ /* Set the SW EEPROM semaphore bit to request access */
+ swsm |= IXGBE_SWSM_SWESMBI;
+ IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm);
- /*
- * If we set the bit successfully then we got the
- * semaphore.
- */
- swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
- if (swsm & IXGBE_SWSM_SWESMBI)
- break;
+ /* If we set the bit successfully then we got the
+ * semaphore.
+ */
+ swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
+ if (swsm & IXGBE_SWSM_SWESMBI)
+ break;
- udelay(50);
- }
+ usleep_range(50, 100);
+ }
- /*
- * Release semaphores and return error if SW EEPROM semaphore
- * was not granted because we don't have access to the EEPROM
- */
- if (i >= timeout) {
- hw_dbg(hw, "SWESMBI Software EEPROM semaphore not granted.\n");
- ixgbe_release_eeprom_semaphore(hw);
- status = IXGBE_ERR_EEPROM;
- }
- } else {
- hw_dbg(hw, "Software semaphore SMBI between device drivers not granted.\n");
+ /* Release semaphores and return error if SW EEPROM semaphore
+ * was not granted because we don't have access to the EEPROM
+ */
+ if (i >= timeout) {
+ hw_dbg(hw, "SWESMBI Software EEPROM semaphore not granted.\n");
+ ixgbe_release_eeprom_semaphore(hw);
+ return IXGBE_ERR_EEPROM;
}
- return status;
+ return 0;
}
/**
@@ -1471,7 +1410,6 @@ static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw)
**/
static s32 ixgbe_ready_eeprom(struct ixgbe_hw *hw)
{
- s32 status = 0;
u16 i;
u8 spi_stat_reg;
@@ -1498,10 +1436,10 @@ static s32 ixgbe_ready_eeprom(struct ixgbe_hw *hw)
*/
if (i >= IXGBE_EEPROM_MAX_RETRY_SPI) {
hw_dbg(hw, "SPI EEPROM Status error\n");
- status = IXGBE_ERR_EEPROM;
+ return IXGBE_ERR_EEPROM;
}
- return status;
+ return 0;
}
/**
@@ -2100,17 +2038,14 @@ s32 ixgbe_disable_mc_generic(struct ixgbe_hw *hw)
**/
s32 ixgbe_fc_enable_generic(struct ixgbe_hw *hw)
{
- s32 ret_val = 0;
u32 mflcn_reg, fccfg_reg;
u32 reg;
u32 fcrtl, fcrth;
int i;
/* Validate the water mark configuration. */
- if (!hw->fc.pause_time) {
- ret_val = IXGBE_ERR_INVALID_LINK_SETTINGS;
- goto out;
- }
+ if (!hw->fc.pause_time)
+ return IXGBE_ERR_INVALID_LINK_SETTINGS;
/* Low water mark of zero causes XOFF floods */
for (i = 0; i < MAX_TRAFFIC_CLASS; i++) {
@@ -2119,8 +2054,7 @@ s32 ixgbe_fc_enable_generic(struct ixgbe_hw *hw)
if (!hw->fc.low_water[i] ||
hw->fc.low_water[i] >= hw->fc.high_water[i]) {
hw_dbg(hw, "Invalid water mark configuration\n");
- ret_val = IXGBE_ERR_INVALID_LINK_SETTINGS;
- goto out;
+ return IXGBE_ERR_INVALID_LINK_SETTINGS;
}
}
}
@@ -2177,9 +2111,7 @@ s32 ixgbe_fc_enable_generic(struct ixgbe_hw *hw)
break;
default:
hw_dbg(hw, "Flow control param set incorrectly\n");
- ret_val = IXGBE_ERR_CONFIG;
- goto out;
- break;
+ return IXGBE_ERR_CONFIG;
}
/* Set 802.3x based flow control settings. */
@@ -2215,8 +2147,7 @@ s32 ixgbe_fc_enable_generic(struct ixgbe_hw *hw)
IXGBE_WRITE_REG(hw, IXGBE_FCRTV, hw->fc.pause_time / 2);
-out:
- return ret_val;
+ return 0;
}
/**
@@ -2277,7 +2208,7 @@ static s32 ixgbe_negotiate_fc(struct ixgbe_hw *hw, u32 adv_reg, u32 lp_reg,
static s32 ixgbe_fc_autoneg_fiber(struct ixgbe_hw *hw)
{
u32 pcs_anadv_reg, pcs_lpab_reg, linkstat;
- s32 ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED;
+ s32 ret_val;
/*
* On multispeed fiber at 1g, bail out if
@@ -2288,7 +2219,7 @@ static s32 ixgbe_fc_autoneg_fiber(struct ixgbe_hw *hw)
linkstat = IXGBE_READ_REG(hw, IXGBE_PCS1GLSTA);
if ((!!(linkstat & IXGBE_PCS1GLSTA_AN_COMPLETE) == 0) ||
(!!(linkstat & IXGBE_PCS1GLSTA_AN_TIMED_OUT) == 1))
- goto out;
+ return IXGBE_ERR_FC_NOT_NEGOTIATED;
pcs_anadv_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANA);
pcs_lpab_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANLP);
@@ -2299,7 +2230,6 @@ static s32 ixgbe_fc_autoneg_fiber(struct ixgbe_hw *hw)
IXGBE_PCS1GANA_SYM_PAUSE,
IXGBE_PCS1GANA_ASM_PAUSE);
-out:
return ret_val;
}
@@ -2312,7 +2242,7 @@ out:
static s32 ixgbe_fc_autoneg_backplane(struct ixgbe_hw *hw)
{
u32 links2, anlp1_reg, autoc_reg, links;
- s32 ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED;
+ s32 ret_val;
/*
* On backplane, bail out if
@@ -2321,12 +2251,12 @@ static s32 ixgbe_fc_autoneg_backplane(struct ixgbe_hw *hw)
*/
links = IXGBE_READ_REG(hw, IXGBE_LINKS);
if ((links & IXGBE_LINKS_KX_AN_COMP) == 0)
- goto out;
+ return IXGBE_ERR_FC_NOT_NEGOTIATED;
if (hw->mac.type == ixgbe_mac_82599EB) {
links2 = IXGBE_READ_REG(hw, IXGBE_LINKS2);
if ((links2 & IXGBE_LINKS2_AN_SUPPORTED) == 0)
- goto out;
+ return IXGBE_ERR_FC_NOT_NEGOTIATED;
}
/*
* Read the 10g AN autoc and LP ability registers and resolve
@@ -2339,7 +2269,6 @@ static s32 ixgbe_fc_autoneg_backplane(struct ixgbe_hw *hw)
anlp1_reg, IXGBE_AUTOC_SYM_PAUSE, IXGBE_AUTOC_ASM_PAUSE,
IXGBE_ANLP1_SYM_PAUSE, IXGBE_ANLP1_ASM_PAUSE);
-out:
return ret_val;
}
@@ -2485,7 +2414,6 @@ static u32 ixgbe_pcie_timeout_poll(struct ixgbe_hw *hw)
**/
static s32 ixgbe_disable_pcie_master(struct ixgbe_hw *hw)
{
- s32 status = 0;
u32 i, poll;
u16 value;
@@ -2495,13 +2423,13 @@ static s32 ixgbe_disable_pcie_master(struct ixgbe_hw *hw)
/* Exit if master requests are blocked */
if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO) ||
ixgbe_removed(hw->hw_addr))
- goto out;
+ return 0;
/* Poll for master request bit to clear */
for (i = 0; i < IXGBE_PCI_MASTER_DISABLE_TIMEOUT; i++) {
udelay(100);
if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO))
- goto out;
+ return 0;
}
/*
@@ -2524,16 +2452,13 @@ static s32 ixgbe_disable_pcie_master(struct ixgbe_hw *hw)
udelay(100);
value = ixgbe_read_pci_cfg_word(hw, IXGBE_PCI_DEVICE_STATUS);
if (ixgbe_removed(hw->hw_addr))
- goto out;
+ return 0;
if (!(value & IXGBE_PCI_DEVICE_STATUS_TRANSACTION_PENDING))
- goto out;
+ return 0;
}
hw_dbg(hw, "PCIe transaction pending bit also did not clear.\n");
- status = IXGBE_ERR_MASTER_REQUESTS_PENDING;
-
-out:
- return status;
+ return IXGBE_ERR_MASTER_REQUESTS_PENDING;
}
/**
@@ -2708,8 +2633,8 @@ s32 ixgbe_blink_led_start_generic(struct ixgbe_hw *hw, u32 index)
bool link_up = false;
u32 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
- s32 ret_val = 0;
bool locked = false;
+ s32 ret_val;
/*
* Link must be up to auto-blink the LEDs;
@@ -2720,14 +2645,14 @@ s32 ixgbe_blink_led_start_generic(struct ixgbe_hw *hw, u32 index)
if (!link_up) {
ret_val = hw->mac.ops.prot_autoc_read(hw, &locked, &autoc_reg);
if (ret_val)
- goto out;
+ return ret_val;
autoc_reg |= IXGBE_AUTOC_AN_RESTART;
autoc_reg |= IXGBE_AUTOC_FLU;
ret_val = hw->mac.ops.prot_autoc_write(hw, autoc_reg, locked);
if (ret_val)
- goto out;
+ return ret_val;
IXGBE_WRITE_FLUSH(hw);
@@ -2739,8 +2664,7 @@ s32 ixgbe_blink_led_start_generic(struct ixgbe_hw *hw, u32 index)
IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
IXGBE_WRITE_FLUSH(hw);
-out:
- return ret_val;
+ return 0;
}
/**
@@ -2752,19 +2676,19 @@ s32 ixgbe_blink_led_stop_generic(struct ixgbe_hw *hw, u32 index)
{
u32 autoc_reg = 0;
u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
- s32 ret_val = 0;
bool locked = false;
+ s32 ret_val;
ret_val = hw->mac.ops.prot_autoc_read(hw, &locked, &autoc_reg);
if (ret_val)
- goto out;
+ return ret_val;
autoc_reg &= ~IXGBE_AUTOC_FLU;
autoc_reg |= IXGBE_AUTOC_AN_RESTART;
ret_val = hw->mac.ops.prot_autoc_write(hw, autoc_reg, locked);
if (ret_val)
- goto out;
+ return ret_val;
led_reg &= ~IXGBE_LED_MODE_MASK(index);
led_reg &= ~IXGBE_LED_BLINK(index);
@@ -2772,8 +2696,7 @@ s32 ixgbe_blink_led_stop_generic(struct ixgbe_hw *hw, u32 index)
IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
IXGBE_WRITE_FLUSH(hw);
-out:
- return ret_val;
+ return 0;
}
/**
@@ -2865,7 +2788,7 @@ san_mac_addr_clr:
**/
u16 ixgbe_get_pcie_msix_count_generic(struct ixgbe_hw *hw)
{
- u16 msix_count = 1;
+ u16 msix_count;
u16 max_msix_count;
u16 pcie_offset;
@@ -2880,7 +2803,7 @@ u16 ixgbe_get_pcie_msix_count_generic(struct ixgbe_hw *hw)
max_msix_count = IXGBE_MAX_MSIX_VECTORS_82599;
break;
default:
- return msix_count;
+ return 1;
}
msix_count = ixgbe_read_pci_cfg_word(hw, pcie_offset);
@@ -2918,10 +2841,10 @@ s32 ixgbe_clear_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
mpsar_hi = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar));
if (ixgbe_removed(hw->hw_addr))
- goto done;
+ return 0;
if (!mpsar_lo && !mpsar_hi)
- goto done;
+ return 0;
if (vmdq == IXGBE_CLEAR_VMDQ_ALL) {
if (mpsar_lo) {
@@ -2943,7 +2866,6 @@ s32 ixgbe_clear_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
/* was that the last pool using this rar? */
if (mpsar_lo == 0 && mpsar_hi == 0 && rar != 0)
hw->mac.ops.clear_rar(hw, rar);
-done:
return 0;
}
@@ -3312,14 +3234,14 @@ s32 ixgbe_get_wwn_prefix_generic(struct ixgbe_hw *hw, u16 *wwnn_prefix,
if ((alt_san_mac_blk_offset == 0) ||
(alt_san_mac_blk_offset == 0xFFFF))
- goto wwn_prefix_out;
+ return 0;
/* check capability in alternative san mac address block */
offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_CAPS_OFFSET;
if (hw->eeprom.ops.read(hw, offset, &caps))
goto wwn_prefix_err;
if (!(caps & IXGBE_ALT_SAN_MAC_ADDR_CAPS_ALTWWN))
- goto wwn_prefix_out;
+ return 0;
/* get the corresponding prefix for WWNN/WWPN */
offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWNN_OFFSET;
@@ -3330,7 +3252,6 @@ s32 ixgbe_get_wwn_prefix_generic(struct ixgbe_hw *hw, u16 *wwnn_prefix,
if (hw->eeprom.ops.read(hw, offset, wwpn_prefix))
goto wwn_prefix_err;
-wwn_prefix_out:
return 0;
wwn_prefix_err:
@@ -3524,21 +3445,17 @@ static s32 ixgbe_host_interface_command(struct ixgbe_hw *hw, u32 *buffer,
u32 hdr_size = sizeof(struct ixgbe_hic_hdr);
u8 buf_len, dword_len;
- s32 ret_val = 0;
-
if (length == 0 || length & 0x3 ||
length > IXGBE_HI_MAX_BLOCK_BYTE_LENGTH) {
hw_dbg(hw, "Buffer length failure.\n");
- ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
- goto out;
+ return IXGBE_ERR_HOST_INTERFACE_COMMAND;
}
/* Check that the host interface is enabled. */
hicr = IXGBE_READ_REG(hw, IXGBE_HICR);
if ((hicr & IXGBE_HICR_EN) == 0) {
hw_dbg(hw, "IXGBE_HOST_EN bit disabled.\n");
- ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
- goto out;
+ return IXGBE_ERR_HOST_INTERFACE_COMMAND;
}
/* Calculate length in DWORDs */
@@ -3566,8 +3483,7 @@ static s32 ixgbe_host_interface_command(struct ixgbe_hw *hw, u32 *buffer,
if (i == IXGBE_HI_COMMAND_TIMEOUT ||
(!(IXGBE_READ_REG(hw, IXGBE_HICR) & IXGBE_HICR_SV))) {
hw_dbg(hw, "Command has failed with no status valid.\n");
- ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
- goto out;
+ return IXGBE_ERR_HOST_INTERFACE_COMMAND;
}
/* Calculate length in DWORDs */
@@ -3582,12 +3498,11 @@ static s32 ixgbe_host_interface_command(struct ixgbe_hw *hw, u32 *buffer,
/* If there is any thing in data position pull it in */
buf_len = ((struct ixgbe_hic_hdr *)buffer)->buf_len;
if (buf_len == 0)
- goto out;
+ return 0;
if (length < (buf_len + hdr_size)) {
hw_dbg(hw, "Buffer not large enough for reply message.\n");
- ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
- goto out;
+ return IXGBE_ERR_HOST_INTERFACE_COMMAND;
}
/* Calculate length in DWORDs, add 3 for odd lengths */
@@ -3599,8 +3514,7 @@ static s32 ixgbe_host_interface_command(struct ixgbe_hw *hw, u32 *buffer,
le32_to_cpus(&buffer[bi]);
}
-out:
- return ret_val;
+ return 0;
}
/**
@@ -3621,12 +3535,10 @@ s32 ixgbe_set_fw_drv_ver_generic(struct ixgbe_hw *hw, u8 maj, u8 min,
{
struct ixgbe_hic_drv_info fw_cmd;
int i;
- s32 ret_val = 0;
+ s32 ret_val;
- if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_SW_MNG_SM) != 0) {
- ret_val = IXGBE_ERR_SWFW_SYNC;
- goto out;
- }
+ if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_SW_MNG_SM))
+ return IXGBE_ERR_SWFW_SYNC;
fw_cmd.hdr.cmd = FW_CEM_CMD_DRIVER_INFO;
fw_cmd.hdr.buf_len = FW_CEM_CMD_DRIVER_INFO_LEN;
@@ -3658,7 +3570,6 @@ s32 ixgbe_set_fw_drv_ver_generic(struct ixgbe_hw *hw, u8 maj, u8 min,
}
hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_SW_MNG_SM);
-out:
return ret_val;
}
@@ -3727,28 +3638,23 @@ static const u8 ixgbe_emc_therm_limit[4] = {
static s32 ixgbe_get_ets_data(struct ixgbe_hw *hw, u16 *ets_cfg,
u16 *ets_offset)
{
- s32 status = 0;
+ s32 status;
status = hw->eeprom.ops.read(hw, IXGBE_ETS_CFG, ets_offset);
if (status)
- goto out;
+ return status;
- if ((*ets_offset == 0x0000) || (*ets_offset == 0xFFFF)) {
- status = IXGBE_NOT_IMPLEMENTED;
- goto out;
- }
+ if ((*ets_offset == 0x0000) || (*ets_offset == 0xFFFF))
+ return IXGBE_NOT_IMPLEMENTED;
status = hw->eeprom.ops.read(hw, *ets_offset, ets_cfg);
if (status)
- goto out;
+ return status;
- if ((*ets_cfg & IXGBE_ETS_TYPE_MASK) != IXGBE_ETS_TYPE_EMC_SHIFTED) {
- status = IXGBE_NOT_IMPLEMENTED;
- goto out;
- }
+ if ((*ets_cfg & IXGBE_ETS_TYPE_MASK) != IXGBE_ETS_TYPE_EMC_SHIFTED)
+ return IXGBE_NOT_IMPLEMENTED;
-out:
- return status;
+ return 0;
}
/**
@@ -3759,7 +3665,7 @@ out:
**/
s32 ixgbe_get_thermal_sensor_data_generic(struct ixgbe_hw *hw)
{
- s32 status = 0;
+ s32 status;
u16 ets_offset;
u16 ets_cfg;
u16 ets_sensor;
@@ -3768,14 +3674,12 @@ s32 ixgbe_get_thermal_sensor_data_generic(struct ixgbe_hw *hw)
struct ixgbe_thermal_sensor_data *data = &hw->mac.thermal_sensor_data;
/* Only support thermal sensors attached to physical port 0 */
- if ((IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1)) {
- status = IXGBE_NOT_IMPLEMENTED;
- goto out;
- }
+ if ((IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1))
+ return IXGBE_NOT_IMPLEMENTED;
status = ixgbe_get_ets_data(hw, &ets_cfg, &ets_offset);
if (status)
- goto out;
+ return status;
num_sensors = (ets_cfg & IXGBE_ETS_NUM_SENSORS_MASK);
if (num_sensors > IXGBE_MAX_SENSORS)
@@ -3788,7 +3692,7 @@ s32 ixgbe_get_thermal_sensor_data_generic(struct ixgbe_hw *hw)
status = hw->eeprom.ops.read(hw, (ets_offset + 1 + i),
&ets_sensor);
if (status)
- goto out;
+ return status;
sensor_index = ((ets_sensor & IXGBE_ETS_DATA_INDEX_MASK) >>
IXGBE_ETS_DATA_INDEX_SHIFT);
@@ -3801,11 +3705,11 @@ s32 ixgbe_get_thermal_sensor_data_generic(struct ixgbe_hw *hw)
IXGBE_I2C_THERMAL_SENSOR_ADDR,
&data->sensor[i].temp);
if (status)
- goto out;
+ return status;
}
}
-out:
- return status;
+
+ return 0;
}
/**
@@ -3817,7 +3721,7 @@ out:
**/
s32 ixgbe_init_thermal_sensor_thresh_generic(struct ixgbe_hw *hw)
{
- s32 status = 0;
+ s32 status;
u16 ets_offset;
u16 ets_cfg;
u16 ets_sensor;
@@ -3830,14 +3734,12 @@ s32 ixgbe_init_thermal_sensor_thresh_generic(struct ixgbe_hw *hw)
memset(data, 0, sizeof(struct ixgbe_thermal_sensor_data));
/* Only support thermal sensors attached to physical port 0 */
- if ((IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1)) {
- status = IXGBE_NOT_IMPLEMENTED;
- goto out;
- }
+ if ((IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_LAN_ID_1))
+ return IXGBE_NOT_IMPLEMENTED;
status = ixgbe_get_ets_data(hw, &ets_cfg, &ets_offset);
if (status)
- goto out;
+ return status;
low_thresh_delta = ((ets_cfg & IXGBE_ETS_LTHRES_DELTA_MASK) >>
IXGBE_ETS_LTHRES_DELTA_SHIFT);
@@ -3871,7 +3773,7 @@ s32 ixgbe_init_thermal_sensor_thresh_generic(struct ixgbe_hw *hw)
data->sensor[i].caution_thresh = therm_limit;
data->sensor[i].max_op_thresh = therm_limit - low_thresh_delta;
}
-out:
- return status;
+
+ return 0;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.