diff options
Diffstat (limited to 'kernel/drivers/misc/mic/scif/scif_debugfs.c')
| -rw-r--r-- | kernel/drivers/misc/mic/scif/scif_debugfs.c | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/kernel/drivers/misc/mic/scif/scif_debugfs.c b/kernel/drivers/misc/mic/scif/scif_debugfs.c new file mode 100644 index 000000000..6884dad97 --- /dev/null +++ b/kernel/drivers/misc/mic/scif/scif_debugfs.c @@ -0,0 +1,162 @@ +/* + * Intel MIC Platform Software Stack (MPSS) + * + * Copyright(c) 2014 Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License, version 2, as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * Intel SCIF driver. + * + */ +#include <linux/debugfs.h> +#include <linux/seq_file.h> + +#include "../common/mic_dev.h" +#include "scif_main.h" + +/* Debugfs parent dir */ +static struct dentry *scif_dbg; + +static int scif_dev_test(struct seq_file *s, void *unused) +{ + int node; + + seq_printf(s, "Total Nodes %d Self Node Id %d Maxid %d\n", + scif_info.total, scif_info.nodeid, + scif_info.maxid); + + if (!scif_dev) + return 0; + + seq_printf(s, "%-16s\t%-16s\n", "node_id", "state"); + + for (node = 0; node <= scif_info.maxid; node++) + seq_printf(s, "%-16d\t%-16s\n", scif_dev[node].node, + _scifdev_alive(&scif_dev[node]) ? + "Running" : "Offline"); + return 0; +} + +static int scif_dev_test_open(struct inode *inode, struct file *file) +{ + return single_open(file, scif_dev_test, inode->i_private); +} + +static int scif_dev_test_release(struct inode *inode, struct file *file) +{ + return single_release(inode, file); +} + +static const struct file_operations scif_dev_ops = { + .owner = THIS_MODULE, + .open = scif_dev_test_open, + .read = seq_read, + .llseek = seq_lseek, + .release = scif_dev_test_release +}; + +static void scif_display_window(struct scif_window *window, struct seq_file *s) +{ + int j; + struct scatterlist *sg; + scif_pinned_pages_t pin = window->pinned_pages; + + seq_printf(s, "window %p type %d temp %d offset 0x%llx ", + window, window->type, window->temp, window->offset); + seq_printf(s, "nr_pages 0x%llx nr_contig_chunks 0x%x prot %d ", + window->nr_pages, window->nr_contig_chunks, window->prot); + seq_printf(s, "ref_count %d magic 0x%llx peer_window 0x%llx ", + window->ref_count, window->magic, window->peer_window); + seq_printf(s, "unreg_state 0x%x va_for_temp 0x%lx\n", + window->unreg_state, window->va_for_temp); + + for (j = 0; j < window->nr_contig_chunks; j++) + seq_printf(s, "page[%d] dma_addr 0x%llx num_pages 0x%llx\n", j, + window->dma_addr[j], window->num_pages[j]); + + if (window->type == SCIF_WINDOW_SELF && pin) + for (j = 0; j < window->nr_pages; j++) + seq_printf(s, "page[%d] = pinned_pages %p address %p\n", + j, pin->pages[j], + page_address(pin->pages[j])); + + if (window->st) + for_each_sg(window->st->sgl, sg, window->st->nents, j) + seq_printf(s, "sg[%d] dma addr 0x%llx length 0x%x\n", + j, sg_dma_address(sg), sg_dma_len(sg)); +} + +static void scif_display_all_windows(struct list_head *head, struct seq_file *s) +{ + struct list_head *item; + struct scif_window *window; + + list_for_each(item, head) { + window = list_entry(item, struct scif_window, list); + scif_display_window(window, s); + } +} + +static int scif_rma_test(struct seq_file *s, void *unused) +{ + struct scif_endpt *ep; + struct list_head *pos; + + mutex_lock(&scif_info.connlock); + list_for_each(pos, &scif_info.connected) { + ep = list_entry(pos, struct scif_endpt, list); + seq_printf(s, "ep %p self windows\n", ep); + mutex_lock(&ep->rma_info.rma_lock); + scif_display_all_windows(&ep->rma_info.reg_list, s); + seq_printf(s, "ep %p remote windows\n", ep); + scif_display_all_windows(&ep->rma_info.remote_reg_list, s); + mutex_unlock(&ep->rma_info.rma_lock); + } + mutex_unlock(&scif_info.connlock); + return 0; +} + +static int scif_rma_test_open(struct inode *inode, struct file *file) +{ + return single_open(file, scif_rma_test, inode->i_private); +} + +static int scif_rma_test_release(struct inode *inode, struct file *file) +{ + return single_release(inode, file); +} + +static const struct file_operations scif_rma_ops = { + .owner = THIS_MODULE, + .open = scif_rma_test_open, + .read = seq_read, + .llseek = seq_lseek, + .release = scif_rma_test_release +}; + +void __init scif_init_debugfs(void) +{ + scif_dbg = debugfs_create_dir(KBUILD_MODNAME, NULL); + if (!scif_dbg) { + dev_err(scif_info.mdev.this_device, + "can't create debugfs dir scif\n"); + return; + } + + debugfs_create_file("scif_dev", 0444, scif_dbg, NULL, &scif_dev_ops); + debugfs_create_file("scif_rma", 0444, scif_dbg, NULL, &scif_rma_ops); + debugfs_create_u8("en_msg_log", 0666, scif_dbg, &scif_info.en_msg_log); + debugfs_create_u8("p2p_enable", 0666, scif_dbg, &scif_info.p2p_enable); +} + +void scif_exit_debugfs(void) +{ + debugfs_remove_recursive(scif_dbg); +} |