From: Sunil Goutham <sgoutham@marvell.com>
Date: Wed, 25 Aug 2021 17:48:46 +0530
Subject: octeontx2-af: Add mbox to retrieve bandwidth profile free count
Patch-mainline: v5.15-rc1
Git-commit: 66c312ea1d3749783440f12e8dfb6db45512ea14
References: jsc#SLE-24682
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 <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/marvell/octeontx2/af/mbox.h | 10 +++++-
drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c | 33 ++++++++++++++++++++
2 files changed, 42 insertions(+), 1 deletion(-)
--- 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_in
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
--- 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(str
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;
+}