octeontx2-af: add mbox for CPT LF reset

On OcteonTX2 SoC, the admin function (AF) is the only one with all
priviliges to configure HW and alloc resources, PFs and it's VFs
have to request AF via mailbox for all their needs.
This patch adds a new mailbox for CPT VFs to request for CPT LF
reset.

Signed-off-by: Srujana Challa <schalla@marvell.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
index 94e743b5b545e710da37d5c229835a04ce903a0f..9eac73bfc9cbcfdee42b7d44a45182a0de77b97a 100644 (file)
--- a/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
+++ b/drivers/net/ethernet/marvell/octeontx2/af/mbox.h
@@ -195,6 +195,7 @@ M(CPT_STATS,            0xA05, cpt_sts, cpt_sts_req, cpt_sts_rsp)   \
 M(CPT_RXC_TIME_CFG,     0xA06, cpt_rxc_time_cfg, cpt_rxc_time_cfg_req,  \
                               msg_rsp)                                 \
 M(CPT_CTX_CACHE_SYNC,   0xA07, cpt_ctx_cache_sync, msg_req, msg_rsp)    \
+M(CPT_LF_RESET,         0xA08, cpt_lf_reset, cpt_lf_rst_req, msg_rsp)  \
 /* SDP mbox IDs (range 0x1000 - 0x11FF) */                             \
 M(SET_SDP_CHAN_INFO, 0x1000, set_sdp_chan_info, sdp_chan_info_msg, msg_rsp) \
 M(GET_SDP_CHAN_INFO, 0x1001, get_sdp_chan_info, msg_req, sdp_get_chan_info_msg) \
@@ -1696,6 +1697,13 @@ struct cpt_inst_lmtst_req {
        u64 rsvd;
 };
 
+/* Mailbox message format to request for CPT LF reset */
+struct cpt_lf_rst_req {
+       struct mbox_msghdr hdr;
+       u32 slot;
+       u32 rsvd;
+};
+
 struct sdp_node_info {
        /* Node to which this PF belons to */
        u8 node_id;

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
index 1ed16ce515bb10285264733976c04e2c716f653b..1cd34914cb86bd5ec1899c537b64becbc09dcb76 100644 (file)
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_cpt.c
@@ -851,6 +851,39 @@ int rvu_mbox_handler_cpt_ctx_cache_sync(struct rvu *rvu, struct msg_req *req,
        return rvu_cpt_ctx_flush(rvu, req->hdr.pcifunc);
 }
 
+int rvu_mbox_handler_cpt_lf_reset(struct rvu *rvu, struct cpt_lf_rst_req *req,
+                                 struct msg_rsp *rsp)
+{
+       u16 pcifunc = req->hdr.pcifunc;
+       struct rvu_block *block;
+       int cptlf, blkaddr, ret;
+       u16 actual_slot;
+       u64 ctl, ctl2;
+
+       blkaddr = rvu_get_blkaddr_from_slot(rvu, BLKTYPE_CPT, pcifunc,
+                                           req->slot, &actual_slot);
+       if (blkaddr < 0)
+               return CPT_AF_ERR_LF_INVALID;
+
+       block = &rvu->hw->block[blkaddr];
+
+       cptlf = rvu_get_lf(rvu, block, pcifunc, actual_slot);
+       if (cptlf < 0)
+               return CPT_AF_ERR_LF_INVALID;
+       ctl = rvu_read64(rvu, blkaddr, CPT_AF_LFX_CTL(cptlf));
+       ctl2 = rvu_read64(rvu, blkaddr, CPT_AF_LFX_CTL2(cptlf));
+
+       ret = rvu_lf_reset(rvu, block, cptlf);
+       if (ret)
+               dev_err(rvu->dev, "Failed to reset blkaddr %d LF%d\n",
+                       block->addr, cptlf);
+
+       rvu_write64(rvu, blkaddr, CPT_AF_LFX_CTL(cptlf), ctl);
+       rvu_write64(rvu, blkaddr, CPT_AF_LFX_CTL2(cptlf), ctl2);
+
+       return 0;
+}
+
 static void cpt_rxc_teardown(struct rvu *rvu, int blkaddr)
 {
        struct cpt_rxc_time_cfg_req req;