121 lines
3.1 KiB
C
121 lines
3.1 KiB
C
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/*! \file ngbde_procfs.c
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*
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* <description>
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*
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*/
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/*
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* $Copyright: Copyright 2018-2020 Broadcom. All rights reserved.
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* The term 'Broadcom' refers to Broadcom Inc. and/or its subsidiaries.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* A copy of the GNU General Public License version 2 (GPLv2) can
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* be found in the LICENSES folder.$
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*/
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#include <ngbde.h>
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static int
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proc_show(struct seq_file *m, void *v)
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{
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struct ngbde_dev_s *swdev;
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unsigned int num_swdev, idx;
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struct ngbde_dmamem_s *dmamem;
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unsigned int pool;
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unsigned int dma_pools;
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char *dma_str;
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ngbde_swdev_get_all(&swdev, &num_swdev);
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seq_printf(m, "Broadcom Device Enumerator (%s)\n", MOD_NAME);
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seq_printf(m, "Found %d switch device(s):\n", num_swdev);
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for (idx = 0; idx < num_swdev; idx++) {
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if (swdev->inactive) {
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seq_printf(m, "%d:removed\n", idx);
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continue;
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}
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seq_printf(m, "%d:%04x:%04x:%02x,%s(%d)\n", idx,
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swdev->vendor_id, swdev->device_id, swdev->revision,
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swdev->use_msi ? "MSI" : "IRQ", swdev->irq_line);
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}
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seq_printf(m, "DMA pools:\n");
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for (idx = 0; idx < num_swdev; idx++) {
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seq_printf(m, "%d", idx);
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dma_pools = 0;
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for (pool = 0; pool < NGBDE_NUM_DMAPOOL_MAX; pool++) {
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dmamem = &swdev[idx].dmapool[pool].dmamem;
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dma_str = "unknown";
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if (dmamem->type == NGBDE_DMA_T_NONE) {
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/* Skip empty DMA pools */
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continue;
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} else if (dmamem->type == NGBDE_DMA_T_KAPI) {
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dma_str = "kapi";
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} else if (dmamem->type == NGBDE_DMA_T_PGMEM) {
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dma_str = "pgmem";
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}
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seq_printf(m, ":%dMB@0x%08lx(%s)",
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(int)(dmamem->size / ONE_MB),
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(unsigned long)dmamem->baddr, dma_str);
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dma_pools++;
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}
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if (dma_pools == 0) {
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seq_printf(m, ":none");
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}
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seq_printf(m, "\n");
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}
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return 0;
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}
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static int
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proc_open(struct inode *inode, struct file *file)
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{
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return single_open(file, proc_show, NULL);
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}
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static int
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proc_release(struct inode *inode, struct file *file)
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{
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return single_release(inode, file);
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}
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static struct file_operations proc_fops = {
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owner: THIS_MODULE,
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open: proc_open,
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read: seq_read,
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llseek: seq_lseek,
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release: proc_release,
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};
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int
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ngbde_procfs_init(void)
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{
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struct proc_dir_entry *entry;
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PROC_CREATE(entry, MOD_NAME, 0666, NULL, &proc_fops);
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if (entry == NULL) {
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printk(KERN_ERR "ngbde: proc_create failed\n");
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return -1;
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}
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return 0;
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}
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int
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ngbde_procfs_cleanup(void)
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{
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remove_proc_entry(MOD_NAME, NULL);
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return 0;
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}
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