From e2fb373038654133267f564e9b15f6f82e8d248e Mon Sep 17 00:00:00 2001 From: Rakesh Babu Date: Thu, 29 Oct 2020 10:45:49 +0530 Subject: [PATCH] octeontx2-af: Display CGX, NIX and PF map in debugfs. Unlike earlier silicon variants, OcteonTx2 98xx silicon has 2 NIX blocks and each of the CGX is mapped to either of the NIX blocks. Each NIX block supports 100G. Mapping btw NIX blocks and CGX is done by firmware based on CGX speed config to have a maximum possible network bandwidth. Since the mapping is not fixed, it's difficult for a user to figure out. Hence added a debugfs entry which displays mapping between CGX LMAC, NIX block and RVU PF. Sample result of this entry :: ~# cat /sys/kernel/debug/octeontx2/rvu_pf_cgx_map PCI dev RVU PF Func NIX block CGX LMAC 0002:02:00.0 0x400 NIX0 CGX0 LMAC0 Signed-off-by: Rakesh Babu Signed-off-by: Sunil Goutham Signed-off-by: Subbaraya Sundeep Signed-off-by: Jakub Kicinski --- .../ethernet/marvell/octeontx2/af/rvu_debugfs.c | 47 ++++++++++++++++++++++ 1 file changed, 47 insertions(+) diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c index b1b54cbc979f..b7b6b6f8865a 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c @@ -224,6 +224,48 @@ static ssize_t rvu_dbg_rsrc_attach_status(struct file *filp, RVU_DEBUG_FOPS(rsrc_status, rsrc_attach_status, NULL); +static int rvu_dbg_rvu_pf_cgx_map_display(struct seq_file *filp, void *unused) +{ + struct rvu *rvu = filp->private; + struct pci_dev *pdev = NULL; + char cgx[10], lmac[10]; + struct rvu_pfvf *pfvf; + int pf, domain, blkid; + u8 cgx_id, lmac_id; + u16 pcifunc; + + domain = 2; + seq_puts(filp, "PCI dev\t\tRVU PF Func\tNIX block\tCGX\tLMAC\n"); + for (pf = 0; pf < rvu->hw->total_pfs; pf++) { + if (!is_pf_cgxmapped(rvu, pf)) + continue; + + pdev = pci_get_domain_bus_and_slot(domain, pf + 1, 0); + if (!pdev) + continue; + + cgx[0] = 0; + lmac[0] = 0; + pcifunc = pf << 10; + pfvf = rvu_get_pfvf(rvu, pcifunc); + + if (pfvf->nix_blkaddr == BLKADDR_NIX0) + blkid = 0; + else + blkid = 1; + + rvu_get_cgx_lmac_id(rvu->pf2cgxlmac_map[pf], &cgx_id, + &lmac_id); + sprintf(cgx, "CGX%d", cgx_id); + sprintf(lmac, "LMAC%d", lmac_id); + seq_printf(filp, "%s\t0x%x\t\tNIX%d\t\t%s\t%s\n", + dev_name(&pdev->dev), pcifunc, blkid, cgx, lmac); + } + return 0; +} + +RVU_DEBUG_SEQ_FOPS(rvu_pf_cgx_map, rvu_pf_cgx_map_display, NULL); + static bool rvu_dbg_is_valid_lf(struct rvu *rvu, int blkaddr, int lf, u16 *pcifunc) { @@ -1769,6 +1811,11 @@ void rvu_dbg_init(struct rvu *rvu) if (!pfile) goto create_failed; + pfile = debugfs_create_file("rvu_pf_cgx_map", 0444, rvu->rvu_dbg.root, + rvu, &rvu_dbg_rvu_pf_cgx_map_fops); + if (!pfile) + goto create_failed; + rvu_dbg_npa_init(rvu); rvu_dbg_nix_init(rvu, BLKADDR_NIX0); -- 2.11.0