1 files changed, 81 insertions, 4 deletions

diff --git a/drivers/misc/mic/scif/scif_debugfs.c b/drivers/misc/mic/scif/scif_debugfs.c
index 51f14e2a1196..6884dad97e17 100644
--- a/drivers/misc/mic/scif/scif_debugfs.c
+++ b/drivers/misc/mic/scif/scif_debugfs.c
@@ -62,10 +62,87 @@ static const struct file_operations scif_dev_ops = {
 	.release = scif_dev_test_release
 };
 
-void __init scif_init_debugfs(void)
+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 dentry *d;
+	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,
@@ -73,8 +150,8 @@ void __init scif_init_debugfs(void)
 		return;
 	}
 
-	d = debugfs_create_file("scif_dev", 0444, scif_dbg,
-				NULL, &scif_dev_ops);
+	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);
 }