AuxXxilium/linux_dsm_epyc7002
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qed: Optimize execution time for nvm attributes configuration.

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Current implementation for nvm_attr configuration instructs the management
FW to load/unload the nvm-cfg image for each user-provided attribute in
the input file. This consumes lot of cycles even for few tens of
attributes.
This patch updates the implementation to perform load/commit of the config
for every 50 attributes. After loading the nvm-image, MFW expects that
config should be committed in a predefined timer value (5 sec), hence it's
not possible to write large number of attributes in a single load/commit
window. Hence performing the commits in chunks.

Fixes: 0dabbe1bb3 ("qed: Add driver API for flashing the config attributes.")
Signed-off-by: Sudarsana Reddy Kalluru <skalluru@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sudarsana Reddy Kalluru 2019-10-30 01:39:58 -07:00 committed by David S. Miller
parent c6761cf521
commit c63b096894
1 changed files with 21 additions and 6 deletions
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27
drivers/net/ethernet/qlogic/qed/qed_main.c
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@ -67,10 +67,9 @@
#define QED_ROCE_QPS (8192)
#define QED_ROCE_DPIS (8)
#define QED_RDMA_SRQS QED_ROCE_QPS
#define QED_NVM_CFG_SET_FLAGS 0xE
#define QED_NVM_CFG_SET_PF_FLAGS 0x1E
#define QED_NVM_CFG_GET_FLAGS 0xA
#define QED_NVM_CFG_GET_PF_FLAGS 0x1A
#define QED_NVM_CFG_MAX_ATTRS 50
static char version[] =
"QLogic FastLinQ 4xxxx Core Module qed " DRV_MODULE_VERSION "\n";
@ -2255,6 +2254,7 @@ static int qed_nvm_flash_cfg_write(struct qed_dev *cdev, const u8 **data)
{
struct qed_hwfn *hwfn = QED_LEADING_HWFN(cdev);
u8 entity_id, len, buf[32];
bool need_nvm_init = true;
struct qed_ptt *ptt;
u16 cfg_id, count;
int rc = 0, i;
@ -2271,8 +2271,10 @@ static int qed_nvm_flash_cfg_write(struct qed_dev *cdev, const u8 **data)
DP_VERBOSE(cdev, NETIF_MSG_DRV,
"Read config ids: num_attrs = %0d\n", count);
/* NVM CFG ID attributes */
for (i = 0; i < count; i++) {
/* NVM CFG ID attributes. Start loop index from 1 to avoid additional
* arithmetic operations in the implementation.
*/
for (i = 1; i <= count; i++) {
cfg_id = *((u16 *)*data);
*data += 2;
entity_id = **data;
@ -2282,8 +2284,21 @@ static int qed_nvm_flash_cfg_write(struct qed_dev *cdev, const u8 **data)
memcpy(buf, *data, len);
*data += len;
flags = entity_id ? QED_NVM_CFG_SET_PF_FLAGS :
QED_NVM_CFG_SET_FLAGS;
flags = 0;
if (need_nvm_init) {
flags |= QED_NVM_CFG_OPTION_INIT;
need_nvm_init = false;
}
/* Commit to flash and free the resources */
if (!(i % QED_NVM_CFG_MAX_ATTRS) || i == count) {
flags |= QED_NVM_CFG_OPTION_COMMIT |
QED_NVM_CFG_OPTION_FREE;
need_nvm_init = true;
}
if (entity_id)
flags |= QED_NVM_CFG_OPTION_ENTITY_SEL;
DP_VERBOSE(cdev, NETIF_MSG_DRV,
"cfg_id = %d entity = %d len = %d\n", cfg_id,