u32 adv_sym, u32 adv_asm, u32 lp_sym, u32 lp_asm);
static s32 ixgbe_setup_fc(struct ixgbe_hw *hw, s32 packetbuf_num);
static s32 ixgbe_poll_eerd_eewr_done(struct ixgbe_hw *hw, u32 ee_reg);
+static s32 ixgbe_read_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
+ u16 words, u16 *data);
+static s32 ixgbe_write_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
+ u16 words, u16 *data);
+static s32 ixgbe_detect_eeprom_page_size_generic(struct ixgbe_hw *hw,
+ u16 offset);
/**
* ixgbe_start_hw_generic - Prepare hardware for Tx/Rx
/* Set default semaphore delay to 10ms which is a well
* tested value */
eeprom->semaphore_delay = 10;
+ /* Clear EEPROM page size, it will be initialized as needed */
+ eeprom->word_page_size = 0;
/*
* Check for EEPROM present first.
}
/**
- * ixgbe_write_eeprom_generic - Writes 16 bit value to EEPROM
+ * ixgbe_write_eeprom_buffer_bit_bang_generic - Write EEPROM using bit-bang
* @hw: pointer to hardware structure
- * @offset: offset within the EEPROM to be written to
- * @data: 16 bit word to be written to the EEPROM
+ * @offset: offset within the EEPROM to write
+ * @words: number of words
+ * @data: 16 bit word(s) to write to EEPROM
*
- * If ixgbe_eeprom_update_checksum is not called after this function, the
- * EEPROM will most likely contain an invalid checksum.
+ * Reads 16 bit word(s) from EEPROM through bit-bang method
**/
-s32 ixgbe_write_eeprom_generic(struct ixgbe_hw *hw, u16 offset, u16 data)
+s32 ixgbe_write_eeprom_buffer_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
+ u16 words, u16 *data)
{
- s32 status;
- u8 write_opcode = IXGBE_EEPROM_WRITE_OPCODE_SPI;
+ s32 status = 0;
+ u16 i, count;
hw->eeprom.ops.init_params(hw);
- if (offset >= hw->eeprom.word_size) {
+ if (words == 0) {
+ status = IXGBE_ERR_INVALID_ARGUMENT;
+ goto out;
+ }
+
+ if (offset + words > hw->eeprom.word_size) {
status = IXGBE_ERR_EEPROM;
goto out;
}
+ /*
+ * The EEPROM page size cannot be queried from the chip. We do lazy
+ * initialization. It is worth to do that when we write large buffer.
+ */
+ if ((hw->eeprom.word_page_size == 0) &&
+ (words > IXGBE_EEPROM_PAGE_SIZE_MAX))
+ ixgbe_detect_eeprom_page_size_generic(hw, offset);
+
+ /*
+ * We cannot hold synchronization semaphores for too long
+ * to avoid other entity starvation. However it is more efficient
+ * to read in bursts than synchronizing access for each word.
+ */
+ for (i = 0; i < words; i += IXGBE_EEPROM_RD_BUFFER_MAX_COUNT) {
+ count = (words - i) / IXGBE_EEPROM_RD_BUFFER_MAX_COUNT > 0 ?
+ IXGBE_EEPROM_RD_BUFFER_MAX_COUNT : (words - i);
+ status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset + i,
+ count, &data[i]);
+
+ if (status != 0)
+ break;
+ }
+
+out:
+ return status;
+}
+
+/**
+ * ixgbe_write_eeprom_buffer_bit_bang - Writes 16 bit word(s) to EEPROM
+ * @hw: pointer to hardware structure
+ * @offset: offset within the EEPROM to be written to
+ * @words: number of word(s)
+ * @data: 16 bit word(s) to be written to the EEPROM
+ *
+ * If ixgbe_eeprom_update_checksum is not called after this function, the
+ * EEPROM will most likely contain an invalid checksum.
+ **/
+static s32 ixgbe_write_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
+ u16 words, u16 *data)
+{
+ s32 status;
+ u16 word;
+ u16 page_size;
+ u16 i;
+ u8 write_opcode = IXGBE_EEPROM_WRITE_OPCODE_SPI;
+
/* Prepare the EEPROM for writing */
status = ixgbe_acquire_eeprom(hw);
}
if (status == 0) {
- 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 >= 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*2),
- hw->eeprom.address_bits);
+ return status;
+}
- /* Send the data */
- data = (data >> 8) | (data << 8);
- ixgbe_shift_out_eeprom_bits(hw, data, 16);
- ixgbe_standby_eeprom(hw);
+/**
+ * ixgbe_write_eeprom_generic - Writes 16 bit value to EEPROM
+ * @hw: pointer to hardware structure
+ * @offset: offset within the EEPROM to be written to
+ * @data: 16 bit word to be written to the EEPROM
+ *
+ * If ixgbe_eeprom_update_checksum is not called after this function, the
+ * EEPROM will most likely contain an invalid checksum.
+ **/
+s32 ixgbe_write_eeprom_generic(struct ixgbe_hw *hw, u16 offset, u16 data)
+{
+ s32 status;
- /* Done with writing - release the EEPROM */
- ixgbe_release_eeprom(hw);
+ 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);
+
out:
return status;
}
/**
- * ixgbe_read_eeprom_bit_bang_generic - Read EEPROM word using bit-bang
+ * ixgbe_read_eeprom_buffer_bit_bang_generic - Read EEPROM using bit-bang
* @hw: pointer to hardware structure
* @offset: offset within the EEPROM to be read
- * @data: read 16 bit value from EEPROM
+ * @words: number of word(s)
+ * @data: read 16 bit words(s) from EEPROM
*
- * Reads 16 bit value from EEPROM through bit-bang method
+ * Reads 16 bit word(s) from EEPROM through bit-bang method
**/
-s32 ixgbe_read_eeprom_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
- u16 *data)
+s32 ixgbe_read_eeprom_buffer_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
+ u16 words, u16 *data)
{
- s32 status;
- u16 word_in;
- u8 read_opcode = IXGBE_EEPROM_READ_OPCODE_SPI;
+ s32 status = 0;
+ u16 i, count;
hw->eeprom.ops.init_params(hw);
- if (offset >= hw->eeprom.word_size) {
+ if (words == 0) {
+ status = IXGBE_ERR_INVALID_ARGUMENT;
+ goto out;
+ }
+
+ if (offset + words > hw->eeprom.word_size) {
status = IXGBE_ERR_EEPROM;
goto out;
}
+ /*
+ * We cannot hold synchronization semaphores for too long
+ * to avoid other entity starvation. However it is more efficient
+ * to read in bursts than synchronizing access for each word.
+ */
+ for (i = 0; i < words; i += IXGBE_EEPROM_RD_BUFFER_MAX_COUNT) {
+ count = (words - i) / IXGBE_EEPROM_RD_BUFFER_MAX_COUNT > 0 ?
+ IXGBE_EEPROM_RD_BUFFER_MAX_COUNT : (words - i);
+
+ status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset + i,
+ count, &data[i]);
+
+ if (status != 0)
+ break;
+ }
+
+out:
+ return status;
+}
+
+/**
+ * ixgbe_read_eeprom_buffer_bit_bang - Read EEPROM using bit-bang
+ * @hw: pointer to hardware structure
+ * @offset: offset within the EEPROM to be read
+ * @words: number of word(s)
+ * @data: read 16 bit word(s) from EEPROM
+ *
+ * Reads 16 bit word(s) from EEPROM through bit-bang method
+ **/
+static s32 ixgbe_read_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
+ u16 words, u16 *data)
+{
+ s32 status;
+ u16 word_in;
+ u8 read_opcode = IXGBE_EEPROM_READ_OPCODE_SPI;
+ u16 i;
+
/* Prepare the EEPROM for reading */
status = ixgbe_acquire_eeprom(hw);
}
if (status == 0) {
- ixgbe_standby_eeprom(hw);
+ 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);
+ }
- /*
- * Some SPI eeproms use the 8th address bit embedded in the
- * opcode
- */
- if ((hw->eeprom.address_bits == 8) && (offset >= 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*2),
- hw->eeprom.address_bits);
+ return status;
+}
- /* Read the data. */
- word_in = ixgbe_shift_in_eeprom_bits(hw, 16);
- *data = (word_in >> 8) | (word_in << 8);
+/**
+ * ixgbe_read_eeprom_bit_bang_generic - Read EEPROM word using bit-bang
+ * @hw: pointer to hardware structure
+ * @offset: offset within the EEPROM to be read
+ * @data: read 16 bit value from EEPROM
+ *
+ * Reads 16 bit value from EEPROM through bit-bang method
+ **/
+s32 ixgbe_read_eeprom_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
+ u16 *data)
+{
+ s32 status;
- /* End this read operation */
- ixgbe_release_eeprom(hw);
+ 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);
+
out:
return status;
}
/**
- * ixgbe_read_eerd_generic - Read EEPROM word using EERD
+ * ixgbe_read_eerd_buffer_generic - Read EEPROM word(s) using EERD
* @hw: pointer to hardware structure
- * @offset: offset of word in the EEPROM to read
- * @data: word read from the EEPROM
+ * @offset: offset of word in the EEPROM to read
+ * @words: number of word(s)
+ * @data: 16 bit word(s) from the EEPROM
*
- * Reads a 16 bit word from the EEPROM using the EERD register.
+ * Reads a 16 bit word(s) from the EEPROM using the EERD register.
**/
-s32 ixgbe_read_eerd_generic(struct ixgbe_hw *hw, u16 offset, u16 *data)
+s32 ixgbe_read_eerd_buffer_generic(struct ixgbe_hw *hw, u16 offset,
+ u16 words, u16 *data)
{
u32 eerd;
- s32 status;
+ s32 status = 0;
+ u32 i;
hw->eeprom.ops.init_params(hw);
+ if (words == 0) {
+ status = IXGBE_ERR_INVALID_ARGUMENT;
+ goto out;
+ }
+
if (offset >= hw->eeprom.word_size) {
status = IXGBE_ERR_EEPROM;
goto out;
}
- eerd = (offset << IXGBE_EEPROM_RW_ADDR_SHIFT) +
- IXGBE_EEPROM_RW_REG_START;
+ for (i = 0; i < words; i++) {
+ eerd = ((offset + i) << IXGBE_EEPROM_RW_ADDR_SHIFT) +
+ IXGBE_EEPROM_RW_REG_START;
- IXGBE_WRITE_REG(hw, IXGBE_EERD, eerd);
- status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_READ);
+ IXGBE_WRITE_REG(hw, IXGBE_EERD, eerd);
+ status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_READ);
- if (status == 0)
- *data = (IXGBE_READ_REG(hw, IXGBE_EERD) >>
- IXGBE_EEPROM_RW_REG_DATA);
- else
- hw_dbg(hw, "Eeprom read timed out\n");
+ if (status == 0) {
+ data[i] = (IXGBE_READ_REG(hw, IXGBE_EERD) >>
+ IXGBE_EEPROM_RW_REG_DATA);
+ } else {
+ hw_dbg(hw, "Eeprom read timed out\n");
+ goto out;
+ }
+ }
+out:
+ return status;
+}
+/**
+ * ixgbe_detect_eeprom_page_size_generic - Detect EEPROM page size
+ * @hw: pointer to hardware structure
+ * @offset: offset within the EEPROM to be used as a scratch pad
+ *
+ * Discover EEPROM page size by writing marching data at given offset.
+ * This function is called only when we are writing a new large buffer
+ * at given offset so the data would be overwritten anyway.
+ **/
+static s32 ixgbe_detect_eeprom_page_size_generic(struct ixgbe_hw *hw,
+ u16 offset)
+{
+ u16 data[IXGBE_EEPROM_PAGE_SIZE_MAX];
+ s32 status = 0;
+ u16 i;
+
+ for (i = 0; i < IXGBE_EEPROM_PAGE_SIZE_MAX; i++)
+ data[i] = i;
+
+ hw->eeprom.word_page_size = IXGBE_EEPROM_PAGE_SIZE_MAX;
+ 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;
+
+ status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset, 1, data);
+ if (status != 0)
+ goto out;
+
+ /*
+ * When writing in burst more than the actual page size
+ * EEPROM address wraps around current page.
+ */
+ hw->eeprom.word_page_size = IXGBE_EEPROM_PAGE_SIZE_MAX - data[0];
+
+ hw_dbg(hw, "Detected EEPROM page size = %d words.",
+ hw->eeprom.word_page_size);
out:
return status;
}
/**
- * ixgbe_write_eewr_generic - Write EEPROM word using EEWR
+ * ixgbe_read_eerd_generic - Read EEPROM word using EERD
+ * @hw: pointer to hardware structure
+ * @offset: offset of word in the EEPROM to read
+ * @data: word read from the EEPROM
+ *
+ * Reads a 16 bit word from the EEPROM using the EERD register.
+ **/
+s32 ixgbe_read_eerd_generic(struct ixgbe_hw *hw, u16 offset, u16 *data)
+{
+ return ixgbe_read_eerd_buffer_generic(hw, offset, 1, data);
+}
+
+/**
+ * ixgbe_write_eewr_buffer_generic - Write EEPROM word(s) using EEWR
* @hw: pointer to hardware structure
* @offset: offset of word in the EEPROM to write
- * @data: word write to the EEPROM
+ * @words: number of words
+ * @data: word(s) write to the EEPROM
*
- * Write a 16 bit word to the EEPROM using the EEWR register.
+ * Write a 16 bit word(s) to the EEPROM using the EEWR register.
**/
-s32 ixgbe_write_eewr_generic(struct ixgbe_hw *hw, u16 offset, u16 data)
+s32 ixgbe_write_eewr_buffer_generic(struct ixgbe_hw *hw, u16 offset,
+ u16 words, u16 *data)
{
u32 eewr;
- s32 status;
+ s32 status = 0;
+ u16 i;
hw->eeprom.ops.init_params(hw);
+ if (words == 0) {
+ status = IXGBE_ERR_INVALID_ARGUMENT;
+ goto out;
+ }
+
if (offset >= hw->eeprom.word_size) {
status = IXGBE_ERR_EEPROM;
goto out;
}
- eewr = (offset << IXGBE_EEPROM_RW_ADDR_SHIFT) |
- (data << IXGBE_EEPROM_RW_REG_DATA) | IXGBE_EEPROM_RW_REG_START;
+ for (i = 0; i < words; i++) {
+ eewr = ((offset + i) << IXGBE_EEPROM_RW_ADDR_SHIFT) |
+ (data[i] << IXGBE_EEPROM_RW_REG_DATA) |
+ IXGBE_EEPROM_RW_REG_START;
- status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_WRITE);
- if (status != 0) {
- hw_dbg(hw, "Eeprom write EEWR timed out\n");
- goto out;
- }
+ status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_WRITE);
+ if (status != 0) {
+ hw_dbg(hw, "Eeprom write EEWR timed out\n");
+ goto out;
+ }
- IXGBE_WRITE_REG(hw, IXGBE_EEWR, eewr);
+ IXGBE_WRITE_REG(hw, IXGBE_EEWR, eewr);
- status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_WRITE);
- if (status != 0) {
- hw_dbg(hw, "Eeprom write EEWR timed out\n");
- goto out;
+ status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_WRITE);
+ if (status != 0) {
+ hw_dbg(hw, "Eeprom write EEWR timed out\n");
+ goto out;
+ }
}
out:
return status;
}
+/**
+ * ixgbe_write_eewr_generic - Write EEPROM word using EEWR
+ * @hw: pointer to hardware structure
+ * @offset: offset of word in the EEPROM to write
+ * @data: word write to the EEPROM
+ *
+ * Write a 16 bit word to the EEPROM using the EEWR register.
+ **/
+s32 ixgbe_write_eewr_generic(struct ixgbe_hw *hw, u16 offset, u16 data)
+{
+ return ixgbe_write_eewr_buffer_generic(hw, offset, 1, &data);
+}
+
/**
* ixgbe_poll_eerd_eewr_done - Poll EERD read or EEWR write status
* @hw: pointer to hardware structure
projects / ~shefty / rdma-dev.git / commitdiff