From c63b0968946b2d72178a92793bcc9439e19b385f Mon Sep 17 00:00:00 2001 From: Sudarsana Reddy Kalluru Date: Wed, 30 Oct 2019 01:39:58 -0700 Subject: 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 Signed-off-by: Ariel Elior Signed-off-by: David S. Miller --- drivers/net/ethernet/qlogic/qed/qed_main.c | 27 +++++++++++++++++++++------ 1 file 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, -- cgit v1.2.3-59-g8ed1b