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net/i40e/base: support persistent LLDP

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This patch adds a function to read NVM module data and uses it to
read current LLDP agent configuration from NVM API version 1.8.

Signed-off-by: Sylwia Wnuczko <sylwia.wnuczko@intel.com>
Signed-off-by: Xiaolong Ye <xiaolong.ye@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>
Acked-by: Beilei Xing <beilei.xing@intel.com>
This commit is contained in:
Xiaolong Ye 2020-01-13 10:39:35 +08:00 committed by Ferruh Yigit
parent 48c0aef5b9
commit a8e84b22bd
4 changed files with 98 additions and 1 deletions
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20
drivers/net/i40e/base/i40e_dcb.c
View File

@ -877,7 +877,25 @@ enum i40e_status_code i40e_init_dcb(struct i40e_hw *hw, bool enable_mib_change)
return I40E_NOT_SUPPORTED;
/* Read LLDP NVM area */
ret = i40e_read_lldp_cfg(hw, &lldp_cfg);
if (hw->flags & I40E_HW_FLAG_FW_LLDP_PERSISTENT) {
u8 offset = 0;
if (hw->mac.type == I40E_MAC_XL710)
offset = I40E_LLDP_CURRENT_STATUS_XL710_OFFSET;
else if (hw->mac.type == I40E_MAC_X722)
offset = I40E_LLDP_CURRENT_STATUS_X722_OFFSET;
else
return I40E_NOT_SUPPORTED;
ret = i40e_read_nvm_module_data(hw,
I40E_SR_EMP_SR_SETTINGS_PTR,
offset,
I40E_LLDP_CURRENT_STATUS_OFFSET,
I40E_LLDP_CURRENT_STATUS_SIZE,
&lldp_cfg.adminstatus);
} else {
ret = i40e_read_lldp_cfg(hw, &lldp_cfg);
}
if (ret)
return I40E_ERR_NOT_READY;

5
drivers/net/i40e/base/i40e_dcb.h
View File

@ -39,6 +39,11 @@
#define I40E_LLDP_ADMINSTATUS_ENABLED_TX 2
#define I40E_LLDP_ADMINSTATUS_ENABLED_RXTX 3
#define I40E_LLDP_CURRENT_STATUS_XL710_OFFSET 0x2B
#define I40E_LLDP_CURRENT_STATUS_X722_OFFSET 0x31
#define I40E_LLDP_CURRENT_STATUS_OFFSET 1
#define I40E_LLDP_CURRENT_STATUS_SIZE 1
/* Defines for LLDP TLV header */
#define I40E_LLDP_MIB_HLEN 14
#define I40E_LLDP_TLV_LEN_SHIFT 0

71
drivers/net/i40e/base/i40e_nvm.c
View File

@ -337,6 +337,77 @@ enum i40e_status_code i40e_read_nvm_word(struct i40e_hw *hw, u16 offset,
return ret_code;
}
/**
* i40e_read_nvm_module_data - Reads NVM Buffer to specified memory location
* @hw: Pointer to the HW structure
* @module_ptr: Pointer to module in words with respect to NVM beginning
* @module_offset: Offset in words from module start
* @data_offset: Offset in words from reading data area start
* @words_data_size: Words to read from NVM
* @data_ptr: Pointer to memory location where resulting buffer will be stored
**/
enum i40e_status_code
i40e_read_nvm_module_data(struct i40e_hw *hw, u8 module_ptr, u16 module_offset,
u16 data_offset, u16 words_data_size, u16 *data_ptr)
{
enum i40e_status_code status;
u16 specific_ptr = 0;
u16 ptr_value = 0;
u16 offset = 0;
if (module_ptr != 0) {
status = i40e_read_nvm_word(hw, module_ptr, &ptr_value);
if (status != I40E_SUCCESS) {
i40e_debug(hw, I40E_DEBUG_ALL,
"Reading nvm word failed.Error code: %d.\n",
status);
return I40E_ERR_NVM;
}
}
#define I40E_NVM_INVALID_PTR_VAL 0x7FFF
#define I40E_NVM_INVALID_VAL 0xFFFF
/* Pointer not initialized */
if (ptr_value == I40E_NVM_INVALID_PTR_VAL ||
ptr_value == I40E_NVM_INVALID_VAL) {
i40e_debug(hw, I40E_DEBUG_ALL, "Pointer not initialized.\n");
return I40E_ERR_BAD_PTR;
}
/* Check whether the module is in SR mapped area or outside */
if (ptr_value & I40E_PTR_TYPE) {
/* Pointer points outside of the Shared RAM mapped area */
i40e_debug(hw, I40E_DEBUG_ALL,
"Reading nvm data failed. Pointer points outside of the Shared RAM mapped area.\n");
return I40E_ERR_PARAM;
} else {
/* Read from the Shadow RAM */
status = i40e_read_nvm_word(hw, ptr_value + module_offset,
&specific_ptr);
if (status != I40E_SUCCESS) {
i40e_debug(hw, I40E_DEBUG_ALL,
"Reading nvm word failed.Error code: %d.\n",
status);
return I40E_ERR_NVM;
}
offset = ptr_value + module_offset + specific_ptr +
data_offset;
status = i40e_read_nvm_buffer(hw, offset, &words_data_size,
data_ptr);
if (status != I40E_SUCCESS) {
i40e_debug(hw, I40E_DEBUG_ALL,
"Reading nvm buffer failed.Error code: %d.\n",
status);
}
}
return status;
}
/**
* i40e_read_nvm_buffer_srctl - Reads Shadow RAM buffer via SRCTL register
* @hw: pointer to the HW structure

3
drivers/net/i40e/base/i40e_prototype.h
View File

@ -442,6 +442,9 @@ enum i40e_status_code i40e_acquire_nvm(struct i40e_hw *hw,
void i40e_release_nvm(struct i40e_hw *hw);
enum i40e_status_code i40e_read_nvm_word(struct i40e_hw *hw, u16 offset,
u16 *data);
enum i40e_status_code
i40e_read_nvm_module_data(struct i40e_hw *hw, u8 module_ptr, u16 module_offset,
u16 data_offset, u16 words_data_size, u16 *data_ptr);
enum i40e_status_code i40e_read_nvm_buffer(struct i40e_hw *hw, u16 offset,
u16 *words, u16 *data);
enum i40e_status_code i40e_write_nvm_aq(struct i40e_hw *hw, u8 module,