From f2e664ad503d4e5ce7c42a0862ab164331a0ef37 Mon Sep 17 00:00:00 2001 From: Rakesh Babu Saladi Date: Mon, 5 Dec 2022 12:35:18 +0530 Subject: octeontx2-af: Support variable number of lmacs Most of the code in CGX/RPM driver assumes that max lmacs per given MAC as always, 4 and the number of MAC blocks also as 4. With this assumption, the max number of interfaces supported is hardcoded to 16. This creates a problem as next gen CN10KB silicon MAC supports 8 lmacs per MAC block. This patch solves the problem by using "max lmac per MAC block" value from constant csrs and uses cgx_cnt_max value which is populated based number of MAC blocks supported by silicon. Signed-off-by: Rakesh Babu Saladi Signed-off-by: Hariprasad Kelam Signed-off-by: Sunil Kovvuri Goutham Signed-off-by: Paolo Abeni --- drivers/net/ethernet/marvell/octeontx2/af/cgx.c | 35 +++++++++++-------------- 1 file changed, 15 insertions(+), 20 deletions(-) (limited to 'drivers/net/ethernet/marvell/octeontx2/af/cgx.c') diff --git a/drivers/net/ethernet/marvell/octeontx2/af/cgx.c b/drivers/net/ethernet/marvell/octeontx2/af/cgx.c index c8724bfa86b0..fa5a1e88cb84 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/cgx.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/cgx.c @@ -78,7 +78,7 @@ static bool is_dev_rpm(void *cgxd) bool is_lmac_valid(struct cgx *cgx, int lmac_id) { - if (!cgx || lmac_id < 0 || lmac_id >= MAX_LMAC_PER_CGX) + if (!cgx || lmac_id < 0 || lmac_id >= cgx->max_lmac_per_mac) return false; return test_bit(lmac_id, &cgx->lmac_bmap); } @@ -90,7 +90,7 @@ static int get_sequence_id_of_lmac(struct cgx *cgx, int lmac_id) { int tmp, id = 0; - for_each_set_bit(tmp, &cgx->lmac_bmap, MAX_LMAC_PER_CGX) { + for_each_set_bit(tmp, &cgx->lmac_bmap, cgx->max_lmac_per_mac) { if (tmp == lmac_id) break; id++; @@ -121,7 +121,7 @@ u64 cgx_read(struct cgx *cgx, u64 lmac, u64 offset) struct lmac *lmac_pdata(u8 lmac_id, struct cgx *cgx) { - if (!cgx || lmac_id >= MAX_LMAC_PER_CGX) + if (!cgx || lmac_id >= cgx->max_lmac_per_mac) return NULL; return cgx->lmac_idmap[lmac_id]; @@ -1395,7 +1395,7 @@ int cgx_get_fwdata_base(u64 *base) if (!cgx) return -ENXIO; - first_lmac = find_first_bit(&cgx->lmac_bmap, MAX_LMAC_PER_CGX); + first_lmac = find_first_bit(&cgx->lmac_bmap, cgx->max_lmac_per_mac); req = FIELD_SET(CMDREG_ID, CGX_CMD_GET_FWD_BASE, req); err = cgx_fwi_cmd_generic(req, &resp, cgx, first_lmac); if (!err) @@ -1484,7 +1484,7 @@ static int cgx_fwi_link_change(struct cgx *cgx, int lmac_id, bool enable) static inline int cgx_fwi_read_version(u64 *resp, struct cgx *cgx) { - int first_lmac = find_first_bit(&cgx->lmac_bmap, MAX_LMAC_PER_CGX); + int first_lmac = find_first_bit(&cgx->lmac_bmap, cgx->max_lmac_per_mac); u64 req = 0; req = FIELD_SET(CMDREG_ID, CGX_CMD_GET_FW_VER, req); @@ -1522,7 +1522,7 @@ static void cgx_lmac_linkup_work(struct work_struct *work) int i, err; /* Do Link up for all the enabled lmacs */ - for_each_set_bit(i, &cgx->lmac_bmap, MAX_LMAC_PER_CGX) { + for_each_set_bit(i, &cgx->lmac_bmap, cgx->max_lmac_per_mac) { err = cgx_fwi_link_change(cgx, i, true); if (err) dev_info(dev, "cgx port %d:%d Link up command failed\n", @@ -1542,14 +1542,6 @@ int cgx_lmac_linkup_start(void *cgxd) return 0; } -static void cgx_lmac_get_fifolen(struct cgx *cgx) -{ - u64 cfg; - - cfg = cgx_read(cgx, 0, CGX_CONST); - cgx->mac_ops->fifo_len = FIELD_GET(CGX_CONST_RXFIFO_SIZE, cfg); -} - static int cgx_configure_interrupt(struct cgx *cgx, struct lmac *lmac, int cnt, bool req_free) { @@ -1604,17 +1596,14 @@ static int cgx_lmac_init(struct cgx *cgx) u64 lmac_list; int i, err; - cgx_lmac_get_fifolen(cgx); - - cgx->lmac_count = cgx->mac_ops->get_nr_lmacs(cgx); /* lmac_list specifies which lmacs are enabled * when bit n is set to 1, LMAC[n] is enabled */ if (cgx->mac_ops->non_contiguous_serdes_lane) lmac_list = cgx_read(cgx, 0, CGXX_CMRX_RX_LMACS) & 0xFULL; - if (cgx->lmac_count > MAX_LMAC_PER_CGX) - cgx->lmac_count = MAX_LMAC_PER_CGX; + if (cgx->lmac_count > cgx->max_lmac_per_mac) + cgx->lmac_count = cgx->max_lmac_per_mac; for (i = 0; i < cgx->lmac_count; i++) { lmac = kzalloc(sizeof(struct lmac), GFP_KERNEL); @@ -1692,7 +1681,7 @@ static int cgx_lmac_exit(struct cgx *cgx) } /* Free all lmac related resources */ - for_each_set_bit(i, &cgx->lmac_bmap, MAX_LMAC_PER_CGX) { + for_each_set_bit(i, &cgx->lmac_bmap, cgx->max_lmac_per_mac) { lmac = cgx->lmac_idmap[i]; if (!lmac) continue; @@ -1708,6 +1697,12 @@ static int cgx_lmac_exit(struct cgx *cgx) static void cgx_populate_features(struct cgx *cgx) { + u64 cfg; + + cfg = cgx_read(cgx, 0, CGX_CONST); + cgx->mac_ops->fifo_len = FIELD_GET(CGX_CONST_RXFIFO_SIZE, cfg); + cgx->max_lmac_per_mac = FIELD_GET(CGX_CONST_MAX_LMACS, cfg); + if (is_dev_rpm(cgx)) cgx->hw_features = (RVU_LMAC_FEAT_DMACF | RVU_MAC_RPM | RVU_LMAC_FEAT_FC | RVU_LMAC_FEAT_PTP); -- cgit