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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 | /* Broadcom NetXtreme-C/E network driver. * * Copyright (c) 2017-2018 Broadcom Limited * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation. */ #include <linux/debugfs.h> #include <linux/module.h> #include <linux/pci.h> #include "bnxt_hsi.h" #include <linux/dim.h> #include "bnxt.h" #include "bnxt_debugfs.h" static struct dentry *bnxt_debug_mnt; static ssize_t debugfs_dim_read(struct file *filep, char __user *buffer, size_t count, loff_t *ppos) { struct dim *dim = filep->private_data; int len; char *buf; if (*ppos) return 0; if (!dim) return -ENODEV; buf = kasprintf(GFP_KERNEL, "state = %d\n" \ "profile_ix = %d\n" \ "mode = %d\n" \ "tune_state = %d\n" \ "steps_right = %d\n" \ "steps_left = %d\n" \ "tired = %d\n", dim->state, dim->profile_ix, dim->mode, dim->tune_state, dim->steps_right, dim->steps_left, dim->tired); if (!buf) return -ENOMEM; if (count < strlen(buf)) { kfree(buf); return -ENOSPC; } len = simple_read_from_buffer(buffer, count, ppos, buf, strlen(buf)); kfree(buf); return len; } static const struct file_operations debugfs_dim_fops = { .owner = THIS_MODULE, .open = simple_open, .read = debugfs_dim_read, }; static void debugfs_dim_ring_init(struct dim *dim, int ring_idx, struct dentry *dd) { static char qname[16]; snprintf(qname, 10, "%d", ring_idx); debugfs_create_file(qname, 0600, dd, dim, &debugfs_dim_fops); } void bnxt_debug_dev_init(struct bnxt *bp) { const char *pname = pci_name(bp->pdev); struct dentry *dir; int i; bp->debugfs_pdev = debugfs_create_dir(pname, bnxt_debug_mnt); dir = debugfs_create_dir("dim", bp->debugfs_pdev); /* create files for each rx ring */ for (i = 0; i < bp->cp_nr_rings; i++) { struct bnxt_cp_ring_info *cpr = &bp->bnapi[i]->cp_ring; if (cpr && bp->bnapi[i]->rx_ring) debugfs_dim_ring_init(&cpr->dim, i, dir); } } void bnxt_debug_dev_exit(struct bnxt *bp) { if (bp) { debugfs_remove_recursive(bp->debugfs_pdev); bp->debugfs_pdev = NULL; } } void bnxt_debug_init(void) { bnxt_debug_mnt = debugfs_create_dir("bnxt_en", NULL); } void bnxt_debug_exit(void) { debugfs_remove_recursive(bnxt_debug_mnt); } |