From 3a858ba392c3b19986c40a4c170ddc37b144115f Mon Sep 17 00:00:00 2001 From: Anirudh Venkataramanan Date: Tue, 20 Mar 2018 07:58:11 -0700 Subject: ice: Add support for VSI allocation and deallocation This patch introduces data structures and functions to alloc/free VSIs. The driver represents a VSI using the ice_vsi structure. Some noteworthy points about VSI allocation: 1) A VSI is allocated in the firmware using the "add VSI" admin queue command (implemented as ice_aq_add_vsi). The firmware returns an identifier for the allocated VSI. The VSI context is used to program certain aspects (loopback, queue map, etc.) of the VSI's configuration. 2) A VSI is deleted using the "free VSI" admin queue command (implemented as ice_aq_free_vsi). 3) The driver represents a VSI using struct ice_vsi. This is allocated and initialized as part of the ice_vsi_alloc flow, and deallocated as part of the ice_vsi_delete flow. 4) Once the VSI is created, a netdev is allocated and associated with it. The VSI's ring and vector related data structures are also allocated and initialized. 5) A VSI's queues can either be contiguous or scattered. To do this, the driver maintains a bitmap (vsi->avail_txqs) which is kept in sync with the firmware's VSI queue allocation imap. If the VSI can't get a contiguous queue allocation, it will fallback to scatter. This is implemented in ice_vsi_get_qs which is called as part of the VSI setup flow. In the release flow, the VSI's queues are released and the bitmap is updated to reflect this by ice_vsi_put_qs. CC: Shannon Nelson Signed-off-by: Anirudh Venkataramanan Acked-by: Shannon Nelson Tested-by: Tony Brelinski Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/ice/ice_switch.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) (limited to 'drivers/net/ethernet/intel/ice/ice_switch.h') diff --git a/drivers/net/ethernet/intel/ice/ice_switch.h b/drivers/net/ethernet/intel/ice/ice_switch.h index b98cb978a129..bb8612d8e07b 100644 --- a/drivers/net/ethernet/intel/ice/ice_switch.h +++ b/drivers/net/ethernet/intel/ice/ice_switch.h @@ -9,6 +9,27 @@ #define ICE_SW_CFG_MAX_BUF_LEN 2048 #define ICE_DFLT_VSI_INVAL 0xff +/* VSI context structure for add/get/update/free operations */ +struct ice_vsi_ctx { + u16 vsi_num; + u16 vsis_allocd; + u16 vsis_unallocated; + u16 flags; + struct ice_aqc_vsi_props info; + bool alloc_from_pool; +}; + +/* VSI related commands */ +enum ice_status +ice_aq_add_vsi(struct ice_hw *hw, struct ice_vsi_ctx *vsi_ctx, + struct ice_sq_cd *cd); +enum ice_status +ice_aq_update_vsi(struct ice_hw *hw, struct ice_vsi_ctx *vsi_ctx, + struct ice_sq_cd *cd); +enum ice_status +ice_aq_free_vsi(struct ice_hw *hw, struct ice_vsi_ctx *vsi_ctx, + bool keep_vsi_alloc, struct ice_sq_cd *cd); + enum ice_status ice_get_initial_sw_cfg(struct ice_hw *hw); #endif /* _ICE_SWITCH_H_ */ -- cgit v1.2.3-59-g8ed1b