From: Prakash Brahmajyosyula Date: Thu, 14 Nov 2019 05:26:20 +0000 (+0530) Subject: octeontx2-af: Add CGX LMAC stats to debugfs X-Git-Tag: v5.10.7~3838^2~97^2~13 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c57211b53682c6681d94137f6733dff3e6ea317e;p=platform%2Fkernel%2Flinux-rpi.git octeontx2-af: Add CGX LMAC stats to debugfs This patch adds CGX LMAC physical interface or serdes Rx/Tx packet stats to debugfs. 'cat cgx/lmac/stats' dumps the current interface link status and Rx/Tx stats. Stats include pkt received/transmitted, dropped, pause frames etc etc. Signed-off-by: Prakash Brahmajyosyula Signed-off-by: Linu Cherian Signed-off-by: Sunil Goutham Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h index 269c43f..2fb871d 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.h +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.h @@ -44,6 +44,9 @@ struct dump_ctx { struct rvu_debugfs { struct dentry *root; + struct dentry *cgx_root; + struct dentry *cgx; + struct dentry *lmac; struct dentry *npa; struct dentry *nix; struct dump_ctx npa_aura_ctx; diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c index 581b611..c01a85e 100644 --- a/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c +++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c @@ -18,9 +18,69 @@ #include "rvu_struct.h" #include "rvu_reg.h" #include "rvu.h" +#include "cgx.h" #define DEBUGFS_DIR_NAME "octeontx2" +enum { + CGX_STAT0, + CGX_STAT1, + CGX_STAT2, + CGX_STAT3, + CGX_STAT4, + CGX_STAT5, + CGX_STAT6, + CGX_STAT7, + CGX_STAT8, + CGX_STAT9, + CGX_STAT10, + CGX_STAT11, + CGX_STAT12, + CGX_STAT13, + CGX_STAT14, + CGX_STAT15, + CGX_STAT16, + CGX_STAT17, + CGX_STAT18, +}; + +static char *cgx_rx_stats_fields[] = { + [CGX_STAT0] = "Received packets", + [CGX_STAT1] = "Octets of received packets", + [CGX_STAT2] = "Received PAUSE packets", + [CGX_STAT3] = "Received PAUSE and control packets", + [CGX_STAT4] = "Filtered DMAC0 (NIX-bound) packets", + [CGX_STAT5] = "Filtered DMAC0 (NIX-bound) octets", + [CGX_STAT6] = "Packets dropped due to RX FIFO full", + [CGX_STAT7] = "Octets dropped due to RX FIFO full", + [CGX_STAT8] = "Error packets", + [CGX_STAT9] = "Filtered DMAC1 (NCSI-bound) packets", + [CGX_STAT10] = "Filtered DMAC1 (NCSI-bound) octets", + [CGX_STAT11] = "NCSI-bound packets dropped", + [CGX_STAT12] = "NCSI-bound octets dropped", +}; + +static char *cgx_tx_stats_fields[] = { + [CGX_STAT0] = "Packets dropped due to excessive collisions", + [CGX_STAT1] = "Packets dropped due to excessive deferral", + [CGX_STAT2] = "Multiple collisions before successful transmission", + [CGX_STAT3] = "Single collisions before successful transmission", + [CGX_STAT4] = "Total octets sent on the interface", + [CGX_STAT5] = "Total frames sent on the interface", + [CGX_STAT6] = "Packets sent with an octet count < 64", + [CGX_STAT7] = "Packets sent with an octet count == 64", + [CGX_STAT8] = "Packets sent with an octet count of 65–127", + [CGX_STAT9] = "Packets sent with an octet count of 128-255", + [CGX_STAT10] = "Packets sent with an octet count of 256-511", + [CGX_STAT11] = "Packets sent with an octet count of 512-1023", + [CGX_STAT12] = "Packets sent with an octet count of 1024-1518", + [CGX_STAT13] = "Packets sent with an octet count of > 1518", + [CGX_STAT14] = "Packets sent to a broadcast DMAC", + [CGX_STAT15] = "Packets sent to the multicast DMAC", + [CGX_STAT16] = "Transmit underflow and were truncated", + [CGX_STAT17] = "Control/PAUSE packets sent", +}; + #define NDC_MAX_BANK(rvu, blk_addr) (rvu_read64(rvu, \ blk_addr, NDC_AF_CONST) & 0xFF) @@ -1269,6 +1329,105 @@ create_failed: debugfs_remove_recursive(rvu->rvu_dbg.npa); } +static int cgx_print_stats(struct seq_file *s, int lmac_id) +{ + struct cgx_link_user_info linfo; + void *cgxd = s->private; + int stat = 0, err = 0; + u64 tx_stat, rx_stat; + + /* Link status */ + seq_puts(s, "\n=======Link Status======\n\n"); + err = cgx_get_link_info(cgxd, lmac_id, &linfo); + if (err) + seq_puts(s, "Failed to read link status\n"); + seq_printf(s, "\nLink is %s %d Mbps\n\n", + linfo.link_up ? "UP" : "DOWN", linfo.speed); + + /* Rx stats */ + seq_puts(s, "\n=======CGX RX_STATS======\n\n"); + while (stat < CGX_RX_STATS_COUNT) { + err = cgx_get_rx_stats(cgxd, lmac_id, stat, &rx_stat); + if (err) + return err; + seq_printf(s, "%s: %llu\n", cgx_rx_stats_fields[stat], rx_stat); + stat++; + } + + /* Tx stats */ + stat = 0; + seq_puts(s, "\n=======CGX TX_STATS======\n\n"); + while (stat < CGX_TX_STATS_COUNT) { + err = cgx_get_tx_stats(cgxd, lmac_id, stat, &tx_stat); + if (err) + return err; + seq_printf(s, "%s: %llu\n", cgx_tx_stats_fields[stat], tx_stat); + stat++; + } + + return err; +} + +static int rvu_dbg_cgx_stat_display(struct seq_file *filp, void *unused) +{ + struct dentry *current_dir; + int err, lmac_id; + char *buf; + + current_dir = filp->file->f_path.dentry->d_parent; + buf = strrchr(current_dir->d_name.name, 'c'); + if (!buf) + return -EINVAL; + + err = kstrtoint(buf + 1, 10, &lmac_id); + if (!err) { + err = cgx_print_stats(filp, lmac_id); + if (err) + return err; + } + return err; +} + +RVU_DEBUG_SEQ_FOPS(cgx_stat, cgx_stat_display, NULL); + +static void rvu_dbg_cgx_init(struct rvu *rvu) +{ + const struct device *dev = &rvu->pdev->dev; + struct dentry *pfile; + int i, lmac_id; + char dname[20]; + void *cgx; + + rvu->rvu_dbg.cgx_root = debugfs_create_dir("cgx", rvu->rvu_dbg.root); + + for (i = 0; i < cgx_get_cgxcnt_max(); i++) { + cgx = rvu_cgx_pdata(i, rvu); + if (!cgx) + continue; + /* cgx debugfs dir */ + sprintf(dname, "cgx%d", i); + rvu->rvu_dbg.cgx = debugfs_create_dir(dname, + rvu->rvu_dbg.cgx_root); + for (lmac_id = 0; lmac_id < cgx_get_lmac_cnt(cgx); lmac_id++) { + /* lmac debugfs dir */ + sprintf(dname, "lmac%d", lmac_id); + rvu->rvu_dbg.lmac = + debugfs_create_dir(dname, rvu->rvu_dbg.cgx); + + pfile = debugfs_create_file("stats", 0600, + rvu->rvu_dbg.lmac, cgx, + &rvu_dbg_cgx_stat_fops); + if (!pfile) + goto create_failed; + } + } + return; + +create_failed: + dev_err(dev, "Failed to create debugfs dir/file for CGX\n"); + debugfs_remove_recursive(rvu->rvu_dbg.cgx_root); +} + void rvu_dbg_init(struct rvu *rvu) { struct device *dev = &rvu->pdev->dev; @@ -1286,6 +1445,7 @@ void rvu_dbg_init(struct rvu *rvu) rvu_dbg_npa_init(rvu); rvu_dbg_nix_init(rvu); + rvu_dbg_cgx_init(rvu); return;