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Message-Id: <20191023182426.13233-2-jeffrey.t.kirsher@intel.com>
Date: Wed, 23 Oct 2019 11:24:16 -0700
From: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To: davem@...emloft.net
Cc: Sylwia Wnuczko <sylwia.wnuczko@...el.com>, netdev@...r.kernel.org,
nhorman@...hat.com, sassmann@...hat.com,
Andrew Bowers <andrewx.bowers@...el.com>,
Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next 01/11] i40e: Fix for persistent lldp support
From: Sylwia Wnuczko <sylwia.wnuczko@...el.com>
This patch fixes 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@...el.com>
Tested-by: Andrew Bowers <andrewx.bowers@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
drivers/net/ethernet/intel/i40e/i40e_dcb.c | 4 +-
drivers/net/ethernet/intel/i40e/i40e_dcb.h | 3 +
drivers/net/ethernet/intel/i40e/i40e_nvm.c | 61 ++++++++++---------
.../net/ethernet/intel/i40e/i40e_prototype.h | 10 +--
4 files changed, 44 insertions(+), 34 deletions(-)
diff --git a/drivers/net/ethernet/intel/i40e/i40e_dcb.c b/drivers/net/ethernet/intel/i40e/i40e_dcb.c
index 200a1cb3b536..9de503c5f99b 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_dcb.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_dcb.c
@@ -889,7 +889,9 @@ i40e_status i40e_init_dcb(struct i40e_hw *hw, bool enable_mib_change)
ret = i40e_read_nvm_module_data(hw,
I40E_SR_EMP_SR_SETTINGS_PTR,
- offset, 1,
+ offset,
+ I40E_LLDP_CURRENT_STATUS_OFFSET,
+ I40E_LLDP_CURRENT_STATUS_SIZE,
&lldp_cfg.adminstatus);
} else {
ret = i40e_read_lldp_cfg(hw, &lldp_cfg);
diff --git a/drivers/net/ethernet/intel/i40e/i40e_dcb.h b/drivers/net/ethernet/intel/i40e/i40e_dcb.h
index 2a80c5daa376..ba86ad833bee 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_dcb.h
+++ b/drivers/net/ethernet/intel/i40e/i40e_dcb.h
@@ -32,6 +32,9 @@
#define I40E_CEE_MAX_FEAT_TYPE 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_TLV_LEN_SHIFT 0
#define I40E_LLDP_TLV_LEN_MASK (0x01FF << I40E_LLDP_TLV_LEN_SHIFT)
diff --git a/drivers/net/ethernet/intel/i40e/i40e_nvm.c b/drivers/net/ethernet/intel/i40e/i40e_nvm.c
index e4d8d20baf3b..7164f4ad8120 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_nvm.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_nvm.c
@@ -323,20 +323,24 @@ i40e_status i40e_read_nvm_word(struct i40e_hw *hw, u16 offset,
/**
* i40e_read_nvm_module_data - Reads NVM Buffer to specified memory location
- * @hw: pointer to the HW structure
+ * @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
+ * @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
**/
-i40e_status 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_module_data(struct i40e_hw *hw,
+ u8 module_ptr,
+ u16 module_offset,
+ u16 data_offset,
+ u16 words_data_size,
+ u16 *data_ptr)
{
i40e_status status;
+ u16 specific_ptr = 0;
u16 ptr_value = 0;
- u32 flat_offset;
+ u32 offset = 0;
if (module_ptr != 0) {
status = i40e_read_nvm_word(hw, module_ptr, &ptr_value);
@@ -352,36 +356,35 @@ i40e_status i40e_read_nvm_module_data(struct i40e_hw *hw,
/* Pointer not initialized */
if (ptr_value == I40E_NVM_INVALID_PTR_VAL ||
- ptr_value == I40E_NVM_INVALID_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 */
- ptr_value &= ~I40E_PTR_TYPE;
+ i40e_debug(hw, I40E_DEBUG_ALL,
+ "Reading nvm data failed. Pointer points outside of the Shared RAM mapped area.\n");
- /* 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) {
- 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_debug(hw, I40E_DEBUG_ALL,
- "Reading nvm aq failed.Error code: %d.\n",
- status);
- return I40E_ERR_NVM;
- }
- } else {
- return I40E_ERR_NVM;
- }
+ return I40E_ERR_PARAM;
} else {
/* Read from the Shadow RAM */
- status = i40e_read_nvm_buffer(hw, ptr_value + offset,
- &words_data_size, data_ptr);
+
+ status = i40e_read_nvm_word(hw, ptr_value + module_offset,
+ &specific_ptr);
+ if (status) {
+ 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_debug(hw, I40E_DEBUG_ALL,
"Reading nvm buffer failed.Error code: %d.\n",
diff --git a/drivers/net/ethernet/intel/i40e/i40e_prototype.h b/drivers/net/ethernet/intel/i40e/i40e_prototype.h
index 5250441bf75b..7effe5010e32 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_prototype.h
+++ b/drivers/net/ethernet/intel/i40e/i40e_prototype.h
@@ -315,10 +315,12 @@ i40e_status i40e_acquire_nvm(struct i40e_hw *hw,
void i40e_release_nvm(struct i40e_hw *hw);
i40e_status i40e_read_nvm_word(struct i40e_hw *hw, u16 offset,
u16 *data);
-i40e_status 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_module_data(struct i40e_hw *hw,
+ u8 module_ptr,
+ u16 module_offset,
+ u16 data_offset,
+ u16 words_data_size,
+ u16 *data_ptr);
i40e_status i40e_read_nvm_buffer(struct i40e_hw *hw, u16 offset,
u16 *words, u16 *data);
i40e_status i40e_update_nvm_checksum(struct i40e_hw *hw);
--
2.21.0
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