[dpdk-dev] [PATCH v3 23/36] net/i40e/base: add persistent lldp support
Xiaolong Ye
xiaolong.ye at intel.com
Mon Dec 16 03:43:23 CET 2019
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: Wnuczko Sylwia <sylwia.wnuczko at intel.com>
Signed-off-by: Xiaolong Ye <xiaolong.ye at intel.com>
---
drivers/net/i40e/base/i40e_dcb.c | 20 +++++++-
drivers/net/i40e/base/i40e_dcb.h | 5 ++
drivers/net/i40e/base/i40e_nvm.c | 71 ++++++++++++++++++++++++++
drivers/net/i40e/base/i40e_prototype.h | 3 ++
4 files changed, 98 insertions(+), 1 deletion(-)
diff --git a/drivers/net/i40e/base/i40e_dcb.c b/drivers/net/i40e/base/i40e_dcb.c
index f1465daa3..2ab5021ee 100644
--- a/drivers/net/i40e/base/i40e_dcb.c
+++ b/drivers/net/i40e/base/i40e_dcb.c
@@ -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;
diff --git a/drivers/net/i40e/base/i40e_dcb.h b/drivers/net/i40e/base/i40e_dcb.h
index 88fe405d7..520c7db73 100644
--- a/drivers/net/i40e/base/i40e_dcb.h
+++ b/drivers/net/i40e/base/i40e_dcb.h
@@ -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
diff --git a/drivers/net/i40e/base/i40e_nvm.c b/drivers/net/i40e/base/i40e_nvm.c
index c8b401cdd..fc24cc2ce 100644
--- a/drivers/net/i40e/base/i40e_nvm.c
+++ b/drivers/net/i40e/base/i40e_nvm.c
@@ -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
diff --git a/drivers/net/i40e/base/i40e_prototype.h b/drivers/net/i40e/base/i40e_prototype.h
index 43db2a6f3..afebf441d 100644
--- a/drivers/net/i40e/base/i40e_prototype.h
+++ b/drivers/net/i40e/base/i40e_prototype.h
@@ -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,
--
2.17.1
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