From c025e1d5c5232e9975a1d04708463437bb975900 Mon Sep 17 00:00:00 2001 From: Sunil Goutham Date: Wed, 25 Aug 2021 17:48:46 +0530 Subject: [PATCH] octeontx2-af: Add mbox to retrieve bandwidth profile free count Added mbox for PF/VF drivers to retrieve current ingress bandwidth profile free count. Also added current policer timeunit configuration info based on which ratelimiting decisions can be taken by PF/VF drivers. Signed-off-by: Sunil Goutham Signed-off-by: David S. Miller --- .../net/ethernet/marvell/octeontx2/af/mbox.h | 10 +++++- .../ethernet/marvell/octeontx2/af/rvu_nix.c | 33 +++++++++++++++++++ 2 files changed, 42 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h index bc9cd1de2872a..ef3c41cf34136 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h +++ b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h @@ -279,7 +279,9 @@ M(NIX_GET_HW_INFO, 0x801c, nix_get_hw_info, msg_req, nix_hw_info) \ M(NIX_BANDPROF_ALLOC, 0x801d, nix_bandprof_alloc, nix_bandprof_alloc_req, \ nix_bandprof_alloc_rsp) \ M(NIX_BANDPROF_FREE, 0x801e, nix_bandprof_free, nix_bandprof_free_req, \ - msg_rsp) + msg_rsp) \ +M(NIX_BANDPROF_GET_HWINFO, 0x801f, nix_bandprof_get_hwinfo, msg_req, \ + nix_bandprof_get_hwinfo_rsp) /* Messages initiated by AF (range 0xC00 - 0xDFF) */ #define MBOX_UP_CGX_MESSAGES \ @@ -1101,6 +1103,12 @@ struct nix_bandprof_free_req { u16 prof_idx[BAND_PROF_NUM_LAYERS][MAX_BANDPROF_PER_PFFUNC]; }; +struct nix_bandprof_get_hwinfo_rsp { + struct mbox_msghdr hdr; + u16 prof_count[BAND_PROF_NUM_LAYERS]; + u32 policer_timeunit; +}; + /* NPC mbox message structs */ #define NPC_MCAM_ENTRY_INVALID 0xFFFF diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c index c2eb3b0c2f53d..dfa933c5fcd18 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c @@ -5173,3 +5173,36 @@ static void nix_clear_ratelimit_aggr(struct rvu *rvu, struct nix_hw *nix_hw, rvu_free_rsrc(&ipolicer->band_prof, mid_prof); } } + +int rvu_mbox_handler_nix_bandprof_get_hwinfo(struct rvu *rvu, struct msg_req *req, + struct nix_bandprof_get_hwinfo_rsp *rsp) +{ + struct nix_ipolicer *ipolicer; + int blkaddr, layer, err; + struct nix_hw *nix_hw; + u64 tu; + + if (!rvu->hw->cap.ipolicer) + return NIX_AF_ERR_IPOLICER_NOTSUPP; + + err = nix_get_struct_ptrs(rvu, req->hdr.pcifunc, &nix_hw, &blkaddr); + if (err) + return err; + + /* Return number of bandwidth profiles free at each layer */ + mutex_lock(&rvu->rsrc_lock); + for (layer = 0; layer < BAND_PROF_NUM_LAYERS; layer++) { + if (layer == BAND_PROF_INVAL_LAYER) + continue; + + ipolicer = &nix_hw->ipolicer[layer]; + rsp->prof_count[layer] = rvu_rsrc_free_count(&ipolicer->band_prof); + } + mutex_unlock(&rvu->rsrc_lock); + + /* Set the policer timeunit in nanosec */ + tu = rvu_read64(rvu, blkaddr, NIX_AF_PL_TS) & GENMASK_ULL(9, 0); + rsp->policer_timeunit = (tu + 1) * 100; + + return 0; +} -- 2.39.5