From 604f202bc9ebf9d8a96caec3375a7ba3bcf149b2 Mon Sep 17 00:00:00 2001 From: Anantha Prabhu Date: Tue, 23 Sep 2025 11:56:56 +0530 Subject: [PATCH] RDMA/bnxt_re: Add debugfs info entry for device and resource information Add a new debugfs info entry that displays device information and non-statistics data using the seq_file interface. This entry shows: - Resource watermarks (peak usage tracking) - Operational counters (CQ resize count) - Doorbell pacing information Link: https://patch.msgid.link/r/20250923062657.981487-2-kalesh-anakkur.purayil@broadcom.com Signed-off-by: Anantha Prabhu Signed-off-by: Kalesh AP Signed-off-by: Jason Gunthorpe --- drivers/infiniband/hw/bnxt_re/debugfs.c | 37 +++++++++++++++++++++++++ 1 file changed, 37 insertions(+) diff --git a/drivers/infiniband/hw/bnxt_re/debugfs.c b/drivers/infiniband/hw/bnxt_re/debugfs.c index e632f1661b929..be5e9b5ca2f06 100644 --- a/drivers/infiniband/hw/bnxt_re/debugfs.c +++ b/drivers/infiniband/hw/bnxt_re/debugfs.c @@ -8,6 +8,7 @@ #include #include +#include #include #include "bnxt_ulp.h" @@ -314,6 +315,40 @@ static const struct file_operations bnxt_re_cc_config_ops = { .write = bnxt_re_cc_config_set, }; +static int info_show(struct seq_file *m, void *unused) +{ + struct bnxt_re_dev *rdev = m->private; + struct bnxt_re_res_cntrs *res_s = &rdev->stats.res; + + seq_puts(m, "Info:\n"); + seq_printf(m, "Device Name\t\t: %s\n", dev_name(&rdev->ibdev.dev)); + seq_printf(m, "PD Watermark\t\t: %llu\n", res_s->pd_watermark); + seq_printf(m, "AH Watermark\t\t: %llu\n", res_s->ah_watermark); + seq_printf(m, "QP Watermark\t\t: %llu\n", res_s->qp_watermark); + seq_printf(m, "RC QP Watermark\t\t: %llu\n", res_s->rc_qp_watermark); + seq_printf(m, "UD QP Watermark\t\t: %llu\n", res_s->ud_qp_watermark); + seq_printf(m, "SRQ Watermark\t\t: %llu\n", res_s->srq_watermark); + seq_printf(m, "CQ Watermark\t\t: %llu\n", res_s->cq_watermark); + seq_printf(m, "MR Watermark\t\t: %llu\n", res_s->mr_watermark); + seq_printf(m, "MW Watermark\t\t: %llu\n", res_s->mw_watermark); + seq_printf(m, "CQ Resize Count\t\t: %d\n", atomic_read(&res_s->resize_count)); + if (rdev->pacing.dbr_pacing) { + seq_printf(m, "DB Pacing Reschedule\t: %llu\n", rdev->stats.pacing.resched); + seq_printf(m, "DB Pacing Complete\t: %llu\n", rdev->stats.pacing.complete); + seq_printf(m, "DB Pacing Alerts\t: %llu\n", rdev->stats.pacing.alerts); + seq_printf(m, "DB FIFO Register\t: 0x%x\n", + readl(rdev->en_dev->bar0 + rdev->pacing.dbr_db_fifo_reg_off)); + } + + return 0; +} +DEFINE_SHOW_ATTRIBUTE(info); + +static void bnxt_re_debugfs_add_info(struct bnxt_re_dev *rdev) +{ + debugfs_create_file("info", 0400, rdev->dbg_root, rdev, &info_fops); +} + void bnxt_re_debugfs_add_pdev(struct bnxt_re_dev *rdev) { struct pci_dev *pdev = rdev->en_dev->pdev; @@ -325,6 +360,8 @@ void bnxt_re_debugfs_add_pdev(struct bnxt_re_dev *rdev) rdev->qp_debugfs = debugfs_create_dir("QPs", rdev->dbg_root); rdev->cc_config = debugfs_create_dir("cc_config", rdev->dbg_root); + bnxt_re_debugfs_add_info(rdev); + rdev->cc_config_params = kzalloc(sizeof(*cc_params), GFP_KERNEL); for (i = 0; i < BNXT_RE_CC_PARAM_GEN0; i++) { -- 2.47.3