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authorSudarsana Reddy Kalluru <skalluru@marvell.com>2019-10-30 01:39:58 -0700
committerDavid S. Miller <davem@davemloft.net>2019-10-30 11:57:14 -0700
commitc63b0968946b2d72178a92793bcc9439e19b385f (patch)
tree4540a2a91a2e35b660452f994dafcd75f6534eef
parentvxlan: fix unexpected failure of vxlan_changelink() (diff)
downloadlinux-dev-c63b0968946b2d72178a92793bcc9439e19b385f.tar.xz
linux-dev-c63b0968946b2d72178a92793bcc9439e19b385f.zip
qed: Optimize execution time for nvm attributes configuration.
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: 0dabbe1bb3a4 ("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>
-rw-r--r--drivers/net/ethernet/qlogic/qed/qed_main.c27
1 files changed, 21 insertions, 6 deletions
diff --git a/drivers/net/ethernet/qlogic/qed/qed_main.c b/drivers/net/ethernet/qlogic/qed/qed_main.c
index 2ce70097d018..38f7f40b3a4d 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_main.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_main.c
@@ -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,