Commit 66c312ea authored by Sunil Goutham's avatar Sunil Goutham Committed by David S. Miller
Browse files

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: default avatarSunil Goutham <sgoutham@marvell.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 18603683

drivers/net/ethernet/marvell/octeontx2/af/mbox.h

+9 −1
Original line number Diff line number Diff line
@@ -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

drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c

+33 −0
Original line number Diff line number Diff line
@@ -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;

}