[dpdk-dev] [PATCH v3 02/30] i40e/base: acquire NVM, before issuing an AQ read nvm command

[Helin Zhang]

It needs to acquire the NVM before issuing an AQ read to the
X722 NVM otherwise it will get EBUSY from the FW. Also release
when done.

Signed-off-by: Helin Zhang <helin.zhang at intel.com>
---
 drivers/net/i40e/base/i40e_nvm.c | 35 +++++++++++++++++++++++++++++------
 1 file changed, 29 insertions(+), 6 deletions(-)

diff --git a/drivers/net/i40e/base/i40e_nvm.c b/drivers/net/i40e/base/i40e_nvm.c
index 60f2bb9..bfa3315 100644
--- a/drivers/net/i40e/base/i40e_nvm.c
+++ b/drivers/net/i40e/base/i40e_nvm.c
@@ -217,11 +217,22 @@ static enum i40e_status_code 
i40e_poll_sr_srctl_done_bit(struct i40e_hw *hw)
 enum i40e_status_code i40e_read_nvm_word(struct i40e_hw *hw, u16 offset,
                                         u16 *data)
 {
+       enum i40e_status_code ret_code = I40E_SUCCESS;
+
 #ifdef X722_SUPPORT
-       if (hw->mac.type == I40E_MAC_X722)
-               return i40e_read_nvm_word_aq(hw, offset, data);
+       if (hw->mac.type == I40E_MAC_X722) {
+               ret_code = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
+               if (!ret_code) {
+                       ret_code = i40e_read_nvm_word_aq(hw, offset, data);
+                       i40e_release_nvm(hw);
+               }
+       } else {
+               ret_code = i40e_read_nvm_word_srctl(hw, offset, data);
+       }
+#else
+       ret_code = i40e_read_nvm_word_srctl(hw, offset, data);
 #endif
-       return i40e_read_nvm_word_srctl(hw, offset, data);
+       return ret_code;
 }

 /**
@@ -309,11 +320,23 @@ enum i40e_status_code i40e_read_nvm_word_aq(struct 
i40e_hw *hw, u16 offset,
 enum i40e_status_code i40e_read_nvm_buffer(struct i40e_hw *hw, u16 offset,
                                           u16 *words, u16 *data)
 {
+       enum i40e_status_code ret_code = I40E_SUCCESS;
+
 #ifdef X722_SUPPORT
-       if (hw->mac.type == I40E_MAC_X722)
-               return i40e_read_nvm_buffer_aq(hw, offset, words, data);
+       if (hw->mac.type == I40E_MAC_X722) {
+               ret_code = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
+               if (!ret_code) {
+                       ret_code = i40e_read_nvm_buffer_aq(hw, offset, words,
+                                                          data);
+                       i40e_release_nvm(hw);
+               }
+       } else {
+               ret_code = i40e_read_nvm_buffer_srctl(hw, offset, words, data);
+       }
+#else
+       ret_code = i40e_read_nvm_buffer_srctl(hw, offset, words, data);
 #endif
-       return i40e_read_nvm_buffer_srctl(hw, offset, words, data);
+       return ret_code;
 }

 /**
-- 
2.5.0