From c897f535e3a7899a4cbe0cdaaa8ba88761b95038 Mon Sep 17 00:00:00 2001 From: Qi Zhang Date: Tue, 15 Dec 2020 10:29:16 +0800 Subject: [PATCH] net/ice/base: allow flash read with arbitrary size Refactor ice_read_flash_module so that it takes a size and a length value, rather than always reading in 2-byte increments. The ice_read_nvm_module and ice_read_orom_module wrapper functions will still read a u16 with the byte-swapping enabled. This will be used in a future change to implement reading of the CIVD data from the Option ROM module. Signed-off-by: Jacob Keller Signed-off-by: Qi Zhang Acked-by: Qiming Yang --- drivers/net/ice/base/ice_nvm.c | 32 ++++++++++++++++++++++---------- 1 file changed, 22 insertions(+), 10 deletions(-) diff --git a/drivers/net/ice/base/ice_nvm.c b/drivers/net/ice/base/ice_nvm.c index 4c709fd866..e2c9068bc5 100644 --- a/drivers/net/ice/base/ice_nvm.c +++ b/drivers/net/ice/base/ice_nvm.c @@ -285,8 +285,9 @@ static u32 ice_get_flash_bank_offset(struct ice_hw *hw, enum ice_bank_select ban * @hw: pointer to the HW structure * @bank: which bank of the module to read * @module: the module to read - * @offset: the offset into the module in words + * @offset: the offset into the module in bytes * @data: storage for the word read from the flash + * @length: bytes of data to read * * Read data from the specified flash module. The bank parameter indicates * whether or not to read from the active bank or the inactive bank of that @@ -298,11 +299,9 @@ static u32 ice_get_flash_bank_offset(struct ice_hw *hw, enum ice_bank_select ban */ static enum ice_status ice_read_flash_module(struct ice_hw *hw, enum ice_bank_select bank, u16 module, - u32 offset, u16 *data) + u32 offset, u8 *data, u32 length) { - u32 bytes = sizeof(u16); enum ice_status status; - __le16 data_local; u32 start; ice_debug(hw, ICE_DBG_TRACE, "%s\n", __func__); @@ -318,10 +317,7 @@ ice_read_flash_module(struct ice_hw *hw, enum ice_bank_select bank, u16 module, if (status) return status; - status = ice_read_flat_nvm(hw, start + offset * sizeof(u16), &bytes, - (_FORCE_ u8 *)&data_local, false); - if (!status) - *data = LE16_TO_CPU(data_local); + status = ice_read_flat_nvm(hw, start + offset, &length, data, false); ice_release_nvm(hw); @@ -341,7 +337,15 @@ ice_read_flash_module(struct ice_hw *hw, enum ice_bank_select bank, u16 module, static enum ice_status ice_read_nvm_module(struct ice_hw *hw, enum ice_bank_select bank, u32 offset, u16 *data) { - return ice_read_flash_module(hw, bank, ICE_SR_1ST_NVM_BANK_PTR, offset, data); + enum ice_status status; + __le16 data_local; + + status = ice_read_flash_module(hw, bank, ICE_SR_1ST_NVM_BANK_PTR, offset * sizeof(u16), + (_FORCE_ u8 *)&data_local, sizeof(u16)); + if (!status) + *data = LE16_TO_CPU(data_local); + + return status; } /** @@ -358,7 +362,15 @@ ice_read_nvm_module(struct ice_hw *hw, enum ice_bank_select bank, u32 offset, u1 static enum ice_status ice_read_orom_module(struct ice_hw *hw, enum ice_bank_select bank, u32 offset, u16 *data) { - return ice_read_flash_module(hw, bank, ICE_SR_1ST_OROM_BANK_PTR, offset, data); + enum ice_status status; + __le16 data_local; + + status = ice_read_flash_module(hw, bank, ICE_SR_1ST_OROM_BANK_PTR, offset * sizeof(u16), + (_FORCE_ u8 *)&data_local, sizeof(u16)); + if (!status) + *data = LE16_TO_CPU(data_local); + + return status; } /**