Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/*
2 * Intel MIC Platform Software Stack (MPSS)
3 *
4 * Copyright(c) 2014 Intel Corporation.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License, version 2, as
8 * published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
14 *
15 * Intel SCIF driver.
16 *
17 */
18#include <linux/debugfs.h>
19#include <linux/seq_file.h>
20
21#include "../common/mic_dev.h"
22#include "scif_main.h"
23
24/* Debugfs parent dir */
25static struct dentry *scif_dbg;
26
27static int scif_dev_test(struct seq_file *s, void *unused)
28{
29 int node;
30
31 seq_printf(s, "Total Nodes %d Self Node Id %d Maxid %d\n",
32 scif_info.total, scif_info.nodeid,
33 scif_info.maxid);
34
35 if (!scif_dev)
36 return 0;
37
38 seq_printf(s, "%-16s\t%-16s\n", "node_id", "state");
39
40 for (node = 0; node <= scif_info.maxid; node++)
41 seq_printf(s, "%-16d\t%-16s\n", scif_dev[node].node,
42 _scifdev_alive(&scif_dev[node]) ?
43 "Running" : "Offline");
44 return 0;
45}
46
47static int scif_dev_test_open(struct inode *inode, struct file *file)
48{
49 return single_open(file, scif_dev_test, inode->i_private);
50}
51
52static int scif_dev_test_release(struct inode *inode, struct file *file)
53{
54 return single_release(inode, file);
55}
56
57static const struct file_operations scif_dev_ops = {
58 .owner = THIS_MODULE,
59 .open = scif_dev_test_open,
60 .read = seq_read,
61 .llseek = seq_lseek,
62 .release = scif_dev_test_release
63};
64
65static void scif_display_window(struct scif_window *window, struct seq_file *s)
66{
67 int j;
68 struct scatterlist *sg;
69 scif_pinned_pages_t pin = window->pinned_pages;
70
71 seq_printf(s, "window %p type %d temp %d offset 0x%llx ",
72 window, window->type, window->temp, window->offset);
73 seq_printf(s, "nr_pages 0x%llx nr_contig_chunks 0x%x prot %d ",
74 window->nr_pages, window->nr_contig_chunks, window->prot);
75 seq_printf(s, "ref_count %d magic 0x%llx peer_window 0x%llx ",
76 window->ref_count, window->magic, window->peer_window);
77 seq_printf(s, "unreg_state 0x%x va_for_temp 0x%lx\n",
78 window->unreg_state, window->va_for_temp);
79
80 for (j = 0; j < window->nr_contig_chunks; j++)
81 seq_printf(s, "page[%d] dma_addr 0x%llx num_pages 0x%llx\n", j,
82 window->dma_addr[j], window->num_pages[j]);
83
84 if (window->type == SCIF_WINDOW_SELF && pin)
85 for (j = 0; j < window->nr_pages; j++)
86 seq_printf(s, "page[%d] = pinned_pages %p address %p\n",
87 j, pin->pages[j],
88 page_address(pin->pages[j]));
89
90 if (window->st)
91 for_each_sg(window->st->sgl, sg, window->st->nents, j)
92 seq_printf(s, "sg[%d] dma addr 0x%llx length 0x%x\n",
93 j, sg_dma_address(sg), sg_dma_len(sg));
94}
95
96static void scif_display_all_windows(struct list_head *head, struct seq_file *s)
97{
98 struct list_head *item;
99 struct scif_window *window;
100
101 list_for_each(item, head) {
102 window = list_entry(item, struct scif_window, list);
103 scif_display_window(window, s);
104 }
105}
106
107static int scif_rma_test(struct seq_file *s, void *unused)
108{
109 struct scif_endpt *ep;
110 struct list_head *pos;
111
112 mutex_lock(&scif_info.connlock);
113 list_for_each(pos, &scif_info.connected) {
114 ep = list_entry(pos, struct scif_endpt, list);
115 seq_printf(s, "ep %p self windows\n", ep);
116 mutex_lock(&ep->rma_info.rma_lock);
117 scif_display_all_windows(&ep->rma_info.reg_list, s);
118 seq_printf(s, "ep %p remote windows\n", ep);
119 scif_display_all_windows(&ep->rma_info.remote_reg_list, s);
120 mutex_unlock(&ep->rma_info.rma_lock);
121 }
122 mutex_unlock(&scif_info.connlock);
123 return 0;
124}
125
126static int scif_rma_test_open(struct inode *inode, struct file *file)
127{
128 return single_open(file, scif_rma_test, inode->i_private);
129}
130
131static int scif_rma_test_release(struct inode *inode, struct file *file)
132{
133 return single_release(inode, file);
134}
135
136static const struct file_operations scif_rma_ops = {
137 .owner = THIS_MODULE,
138 .open = scif_rma_test_open,
139 .read = seq_read,
140 .llseek = seq_lseek,
141 .release = scif_rma_test_release
142};
143
144void __init scif_init_debugfs(void)
145{
146 scif_dbg = debugfs_create_dir(KBUILD_MODNAME, NULL);
147 if (!scif_dbg) {
148 dev_err(scif_info.mdev.this_device,
149 "can't create debugfs dir scif\n");
150 return;
151 }
152
153 debugfs_create_file("scif_dev", 0444, scif_dbg, NULL, &scif_dev_ops);
154 debugfs_create_file("scif_rma", 0444, scif_dbg, NULL, &scif_rma_ops);
155 debugfs_create_u8("en_msg_log", 0666, scif_dbg, &scif_info.en_msg_log);
156 debugfs_create_u8("p2p_enable", 0666, scif_dbg, &scif_info.p2p_enable);
157}
158
159void scif_exit_debugfs(void)
160{
161 debugfs_remove_recursive(scif_dbg);
162}