leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

i40e: set max limit for access polling

Browse Source 
Don't bother trying to set a smaller timeout on the polling,
just simplify the code and always use the max limit.  Also,
rename a variable for clarity and fix a comment.

Change-ID: I0300c3562ccc4fd5fa3088f8ae52db0c1eb33af5
Signed-off-by: Shannon Nelson <shannon.nelson@intel.com>
Acked-by: Michal Kosiarz <michal.kosiarz@intel.com>
Tested-by: Jim Young <jamesx.m.young@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Shannon Nelson 2014-11-13 08:23:19 +00:00 committed by Jeff Kirsher
parent 2a6d8c2f01
commit c509c1decb
3 changed files with 10 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
drivers/net/ethernet/intel/i40e/i40e_nvm.c
View File

@ -80,45 +80,40 @@ i40e_status i40e_acquire_nvm(struct i40e_hw *hw,
{
i40e_status ret_code = 0;
u64 gtime, timeout;
u64 time = 0;
u64 time_left = 0;
if (hw->nvm.blank_nvm_mode)
goto i40e_i40e_acquire_nvm_exit;
ret_code = i40e_aq_request_resource(hw, I40E_NVM_RESOURCE_ID, access,
0, &time, NULL);
0, &time_left, NULL);
/* Reading the Global Device Timer */
gtime = rd32(hw, I40E_GLVFGEN_TIMER);
/* Store the timeout */
hw->nvm.hw_semaphore_timeout = I40E_MS_TO_GTIME(time) + gtime;
hw->nvm.hw_semaphore_timeout = I40E_MS_TO_GTIME(time_left) + gtime;
if (ret_code) {
/* Set the polling timeout */
if (time > I40E_MAX_NVM_TIMEOUT)
timeout = I40E_MS_TO_GTIME(I40E_MAX_NVM_TIMEOUT)
+ gtime;
else
timeout = hw->nvm.hw_semaphore_timeout;
/* Poll until the current NVM owner timeouts */
timeout = I40E_MS_TO_GTIME(I40E_MAX_NVM_TIMEOUT) + gtime;
while (gtime < timeout) {
usleep_range(10000, 20000);
gtime = rd32(hw, I40E_GLVFGEN_TIMER);
ret_code = i40e_aq_request_resource(hw,
I40E_NVM_RESOURCE_ID,
access, 0, &time,
access, 0, &time_left,
NULL);
if (!ret_code) {
hw->nvm.hw_semaphore_timeout =
I40E_MS_TO_GTIME(time) + gtime;
I40E_MS_TO_GTIME(time_left) + gtime;
break;
}
gtime = rd32(hw, I40E_GLVFGEN_TIMER);
}
if (ret_code) {
hw->nvm.hw_semaphore_timeout = 0;
i40e_debug(hw, I40E_DEBUG_NVM,
"NVM acquire timed out, wait %llu ms before trying again.\n",
time);
time_left);
}
}

2
drivers/net/ethernet/intel/i40e/i40e_type.h
View File

@ -261,7 +261,7 @@ enum i40e_aq_resource_access_type {
};
struct i40e_nvm_info {
u64 hw_semaphore_timeout; /* 2usec global time (GTIME resolution) */
u64 hw_semaphore_timeout; /* usec global time (GTIME resolution) */
u32 timeout; /* [ms] */
u16 sr_size; /* Shadow RAM size in words */
bool blank_nvm_mode; /* is NVM empty (no FW present)*/

2
drivers/net/ethernet/intel/i40evf/i40e_type.h
View File

@ -260,7 +260,7 @@ enum i40e_aq_resource_access_type {
};
struct i40e_nvm_info {
u64 hw_semaphore_timeout; /* 2usec global time (GTIME resolution) */
u64 hw_semaphore_timeout; /* usec global time (GTIME resolution) */
u32 timeout; /* [ms] */
u16 sr_size; /* Shadow RAM size in words */
bool blank_nvm_mode; /* is NVM empty (no FW present)*/