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i40e/i40evf: add tracking to NVM busy state 

The NVM updates take some time and are asynchronous actions that signal
their completion with an AdminQ event.  This code tracks when there is
an NVM update outstanding and won't allow a new update command until a
completion event is received from the current update.

Change-ID: Ic132fe16bd9dc09b002ed38297a877c1a01553ce
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Acked-by: Mitch Williams <mitch.a.williams@intel.com>
Acked-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Kavindya Deegala <kavindya.s.deegala@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Shannon Nelson 2014-03-14 07:32:22 +00:00 committed by Jeff Kirsher
parent 7d54eb2c66
commit c9296ad2ad
4 changed files with 47 additions and 0 deletions
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23
drivers/net/ethernet/intel/i40e/i40e_adminq.c
View File

@ -32,6 +32,16 @@
static void i40e_resume_aq(struct i40e_hw *hw);
/**
* i40e_is_nvm_update_op - return true if this is an NVM update operation
* @desc: API request descriptor
**/
static inline bool i40e_is_nvm_update_op(struct i40e_aq_desc *desc)
{
return (desc->opcode == i40e_aqc_opc_nvm_erase) ||
(desc->opcode == i40e_aqc_opc_nvm_update);
}
/**
* i40e_adminq_init_regs - Initialize AdminQ registers
* @hw: pointer to the hardware structure
@ -585,6 +595,7 @@ i40e_status i40e_init_adminq(struct i40e_hw *hw)
/* pre-emptive resource lock release */
i40e_aq_release_resource(hw, I40E_NVM_RESOURCE_ID, 0, NULL);
hw->aq.nvm_busy = false;
ret_code = i40e_aq_set_hmc_resource_profile(hw,
I40E_HMC_PROFILE_DEFAULT,
@ -708,6 +719,12 @@ i40e_status i40e_asq_send_command(struct i40e_hw *hw,
goto asq_send_command_exit;
}
if (i40e_is_nvm_update_op(desc) && hw->aq.nvm_busy) {
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE, "AQTX: NVM busy.\n");
status = I40E_ERR_NVM;
goto asq_send_command_exit;
}
details = I40E_ADMINQ_DETAILS(hw->aq.asq, hw->aq.asq.next_to_use);
if (cmd_details) {
*details = *cmd_details;
@ -835,6 +852,9 @@ i40e_status i40e_asq_send_command(struct i40e_hw *hw,
hw->aq.asq_last_status = (enum i40e_admin_queue_err)retval;
}
if (i40e_is_nvm_update_op(desc))
hw->aq.nvm_busy = true;
/* update the error if time out occurred */
if ((!cmd_completed) &&
(!details->async && !details->postpone)) {
@ -929,6 +949,9 @@ i40e_status i40e_clean_arq_element(struct i40e_hw *hw,
e->msg_size);
}
if (i40e_is_nvm_update_op(&e->desc))
hw->aq.nvm_busy = false;
/* Restore the original datalen and buffer address in the desc,
* FW updates datalen to indicate the event message
* size

1
drivers/net/ethernet/intel/i40e/i40e_adminq.h
View File

@ -90,6 +90,7 @@ struct i40e_adminq_info {
u16 fw_min_ver; /* firmware minor version */
u16 api_maj_ver; /* api major version */
u16 api_min_ver; /* api minor version */
bool nvm_busy;
struct mutex asq_mutex; /* Send queue lock */
struct mutex arq_mutex; /* Receive queue lock */

22
drivers/net/ethernet/intel/i40evf/i40e_adminq.c
View File

@ -27,6 +27,16 @@
#include "i40e_adminq.h"
#include "i40e_prototype.h"
/**
* i40e_is_nvm_update_op - return true if this is an NVM update operation
* @desc: API request descriptor
**/
static inline bool i40e_is_nvm_update_op(struct i40e_aq_desc *desc)
{
return (desc->opcode == i40e_aqc_opc_nvm_erase) ||
(desc->opcode == i40e_aqc_opc_nvm_update);
}
/**
* i40e_adminq_init_regs - Initialize AdminQ registers
* @hw: pointer to the hardware structure
@ -659,6 +669,12 @@ i40e_status i40evf_asq_send_command(struct i40e_hw *hw,
goto asq_send_command_exit;
}
if (i40e_is_nvm_update_op(desc) && hw->aq.nvm_busy) {
i40e_debug(hw, I40E_DEBUG_AQ_MESSAGE, "AQTX: NVM busy.\n");
status = I40E_ERR_NVM;
goto asq_send_command_exit;
}
details = I40E_ADMINQ_DETAILS(hw->aq.asq, hw->aq.asq.next_to_use);
if (cmd_details) {
*details = *cmd_details;
@ -786,6 +802,9 @@ i40e_status i40evf_asq_send_command(struct i40e_hw *hw,
hw->aq.asq_last_status = (enum i40e_admin_queue_err)retval;
}
if (i40e_is_nvm_update_op(desc))
hw->aq.nvm_busy = true;
/* update the error if time out occurred */
if ((!cmd_completed) &&
(!details->async && !details->postpone)) {
@ -880,6 +899,9 @@ i40e_status i40evf_clean_arq_element(struct i40e_hw *hw,
e->msg_size);
}
if (i40e_is_nvm_update_op(&e->desc))
hw->aq.nvm_busy = false;
/* Restore the original datalen and buffer address in the desc,
* FW updates datalen to indicate the event message
* size

1
drivers/net/ethernet/intel/i40evf/i40e_adminq.h
View File

@ -87,6 +87,7 @@ struct i40e_adminq_info {
u16 fw_min_ver; /* firmware minor version */
u16 api_maj_ver; /* api major version */
u16 api_min_ver; /* api minor version */
bool nvm_busy;
struct mutex asq_mutex; /* Send queue lock */
struct mutex arq_mutex; /* Receive queue lock */