[36/69] net/i40e/base: add persistent lldp support
diff mbox series

Message ID 20191202074935.97629-37-xiaolong.ye@intel.com
State New
Delegated to: xiaolong ye
Headers show
Series
  • update for i40e base code
Related show

Checks

Context Check Description
ci/Intel-compilation success Compilation OK
ci/checkpatch success coding style OK

Commit Message

Ye Xiaolong Dec. 2, 2019, 7:49 a.m. UTC
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@intel.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Reviewed-by: Kirsher Jeffrey T <jeffrey.t.kirsher@intel.com>
Reviewed-by: Galazka Krzysztof <krzysztof.galazka@intel.com>
Reviewed-by: Grzegorz Siwik <grzegorz.siwik@intel.com>
Reviewed-by: Michael Alice <alice.michael@intel.com>
Signed-off-by: Xiaolong Ye <xiaolong.ye@intel.com>
---
 drivers/net/i40e/base/i40e_dcb.c       | 18 ++++++-
 drivers/net/i40e/base/i40e_dcb.h       |  2 +
 drivers/net/i40e/base/i40e_nvm.c       | 71 ++++++++++++++++++++++++++
 drivers/net/i40e/base/i40e_prototype.h |  4 ++
 4 files changed, 94 insertions(+), 1 deletion(-)

Patch
diff mbox series

diff --git a/drivers/net/i40e/base/i40e_dcb.c b/drivers/net/i40e/base/i40e_dcb.c
index 96d2f05df..38a1284c9 100644
--- a/drivers/net/i40e/base/i40e_dcb.c
+++ b/drivers/net/i40e/base/i40e_dcb.c
@@ -877,7 +877,23 @@  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, 1,
+						&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 6805bc8fb..f33507081 100644
--- a/drivers/net/i40e/base/i40e_dcb.h
+++ b/drivers/net/i40e/base/i40e_dcb.h
@@ -39,6 +39,8 @@ 
 #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
 /* 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..6a55d59b4 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
+ * @offset: offset in words from module 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 offset,
+						u16 words_data_size,
+						u16 *data_ptr)
+{
+	enum i40e_status_code status;
+	u16 ptr_value = 0;
+	u32 flat_offset;
+
+	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)
+		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 */
+		ptr_value &= ~I40E_PTR_TYPE;
+
+		/* PtrValue in 4kB units, need to convert to words */
+		ptr_value /= 2;
+		flat_offset = ((u32)ptr_value * 0x1000) + (u32)offset;
+		status = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
+		if (status == I40E_SUCCESS) {
+			status = i40e_aq_read_nvm(hw, 0, 2 * flat_offset,
+						  2 * words_data_size,
+						  data_ptr, true, NULL);
+			i40e_release_nvm(hw);
+			if (status != I40E_SUCCESS) {
+				i40e_debug(hw, I40E_DEBUG_ALL,
+					   "Reading nvm aq failed.Error code: %d.\n",
+					   status);
+				return I40E_ERR_NVM;
+			}
+		} else {
+			return I40E_ERR_NVM;
+		}
+	} else {
+		/* Read from the Shadow RAM */
+		status = i40e_read_nvm_buffer(hw, ptr_value + 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 b01dff439..a85c00b3b 100644
--- a/drivers/net/i40e/base/i40e_prototype.h
+++ b/drivers/net/i40e/base/i40e_prototype.h
@@ -456,6 +456,10 @@  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 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,