The current driver APIs to send messages to the firmware allow only one outstanding message in flight. There is only one buffer for the firmware response for each firmware channel. To send a firmware message, all callers must take a mutex and it is released after the firmware response has been read. This scheme does not allow multiple firmware messages in flight. Firmware may take a long time to respond to some messages (e.g. NVRAM related ones) and this causes the mutex to be held for a long time, blocking other callers. This patchset intoduces the new driver APIs to address the above shortcomings. All callers are then updated to use the new APIs. Edwin Peer (11): bnxt_en: remove DMA mapping for KONG response bnxt_en: Refactor the HWRM_VER_GET firmware calls bnxt_en: move HWRM API implementation into separate file bnxt_en: introduce new firmware message API based on DMA pools bnxt_en: discard out of sequence HWRM responses bnxt_en: add HWRM request assignment API bnxt_en: add support for HWRM request slices bnxt_en: use link_lock instead of hwrm_cmd_lock to protect link_info bnxt_en: update all firmware calls to use the new APIs bnxt_en: remove legacy HWRM interface bnxt_en: support multiple HWRM commands in flight drivers/net/ethernet/broadcom/bnxt/Makefile | 2 +- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 2129 ++++++++--------- drivers/net/ethernet/broadcom/bnxt/bnxt.h | 101 +- drivers/net/ethernet/broadcom/bnxt/bnxt_dcb.c | 185 +- .../net/ethernet/broadcom/bnxt/bnxt_devlink.c | 81 +- .../net/ethernet/broadcom/bnxt/bnxt_ethtool.c | 548 +++-- .../net/ethernet/broadcom/bnxt/bnxt_hwrm.c | 763 ++++++ .../net/ethernet/broadcom/bnxt/bnxt_hwrm.h | 145 ++ drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.c | 130 +- .../net/ethernet/broadcom/bnxt/bnxt_sriov.c | 457 ++-- drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c | 264 +- drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c | 31 +- drivers/net/ethernet/broadcom/bnxt/bnxt_vfr.c | 62 +- 13 files changed, 2901 insertions(+), 1997 deletions(-) create mode 100644 drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.c create mode 100644 drivers/net/ethernet/broadcom/bnxt/bnxt_hwrm.h -- 2.18.1