Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 181 insertions, 0 deletions

diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_debugfs.c b/drivers/net/ethernet/netronome/nfp/nfp_net_debugfs.c
new file mode 100644
index 000000000..d8b735ccf
--- /dev/null
+++ b/drivers/net/ethernet/netronome/nfp/nfp_net_debugfs.c
@@ -0,0 +1,181 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/* Copyright (C) 2015-2019 Netronome Systems, Inc. */
+#include <linux/debugfs.h>
+#include <linux/module.h>
+#include <linux/rtnetlink.h>
+
+#include "nfp_net.h"
+#include "nfp_net_dp.h"
+
+static struct dentry *nfp_dir;
+
+static int nfp_rx_q_show(struct seq_file *file, void *data)
+{
+	struct nfp_net_r_vector *r_vec = file->private;
+	struct nfp_net_rx_ring *rx_ring;
+	int fl_rd_p, fl_wr_p, rxd_cnt;
+	struct nfp_net_rx_desc *rxd;
+	struct nfp_net *nn;
+	void *frag;
+	int i;
+
+	rtnl_lock();
+
+	if (!r_vec->nfp_net || !r_vec->rx_ring)
+		goto out;
+	nn = r_vec->nfp_net;
+	rx_ring = r_vec->rx_ring;
+	if (!nfp_net_running(nn))
+		goto out;
+
+	rxd_cnt = rx_ring->cnt;
+
+	fl_rd_p = nfp_qcp_rd_ptr_read(rx_ring->qcp_fl);
+	fl_wr_p = nfp_qcp_wr_ptr_read(rx_ring->qcp_fl);
+
+	seq_printf(file, "RX[%02d,%02d]: cnt=%u dma=%pad host=%p   H_RD=%u H_WR=%u FL_RD=%u FL_WR=%u\n",
+		   rx_ring->idx, rx_ring->fl_qcidx,
+		   rx_ring->cnt, &rx_ring->dma, rx_ring->rxds,
+		   rx_ring->rd_p, rx_ring->wr_p, fl_rd_p, fl_wr_p);
+
+	for (i = 0; i < rxd_cnt; i++) {
+		rxd = &rx_ring->rxds[i];
+		seq_printf(file, "%04d: 0x%08x 0x%08x", i,
+			   rxd->vals[0], rxd->vals[1]);
+
+		if (!r_vec->xsk_pool) {
+			frag = READ_ONCE(rx_ring->rxbufs[i].frag);
+			if (frag)
+				seq_printf(file, " frag=%p", frag);
+
+			if (rx_ring->rxbufs[i].dma_addr)
+				seq_printf(file, " dma_addr=%pad",
+					   &rx_ring->rxbufs[i].dma_addr);
+		} else {
+			if (rx_ring->xsk_rxbufs[i].dma_addr)
+				seq_printf(file, " dma_addr=%pad",
+					   &rx_ring->xsk_rxbufs[i].dma_addr);
+		}
+
+		if (i == rx_ring->rd_p % rxd_cnt)
+			seq_puts(file, " H_RD ");
+		if (i == rx_ring->wr_p % rxd_cnt)
+			seq_puts(file, " H_WR ");
+		if (i == fl_rd_p % rxd_cnt)
+			seq_puts(file, " FL_RD");
+		if (i == fl_wr_p % rxd_cnt)
+			seq_puts(file, " FL_WR");
+
+		seq_putc(file, '\n');
+	}
+out:
+	rtnl_unlock();
+	return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(nfp_rx_q);
+
+static int nfp_tx_q_show(struct seq_file *file, void *data);
+DEFINE_SHOW_ATTRIBUTE(nfp_tx_q);
+
+static int nfp_tx_q_show(struct seq_file *file, void *data)
+{
+	struct nfp_net_r_vector *r_vec = file->private;
+	struct nfp_net_tx_ring *tx_ring;
+	struct nfp_net *nn;
+	int d_rd_p, d_wr_p;
+
+	rtnl_lock();
+
+	if (debugfs_real_fops(file->file) == &nfp_tx_q_fops)
+		tx_ring = r_vec->tx_ring;
+	else
+		tx_ring = r_vec->xdp_ring;
+	if (!r_vec->nfp_net || !tx_ring)
+		goto out;
+	nn = r_vec->nfp_net;
+	if (!nfp_net_running(nn))
+		goto out;
+
+	d_rd_p = nfp_qcp_rd_ptr_read(tx_ring->qcp_q);
+	d_wr_p = nfp_qcp_wr_ptr_read(tx_ring->qcp_q);
+
+	seq_printf(file, "TX[%02d,%02d%s]: cnt=%u dma=%pad host=%p   H_RD=%u H_WR=%u D_RD=%u D_WR=%u",
+		   tx_ring->idx, tx_ring->qcidx,
+		   tx_ring == r_vec->tx_ring ? "" : "xdp",
+		   tx_ring->cnt, &tx_ring->dma, tx_ring->txds,
+		   tx_ring->rd_p, tx_ring->wr_p, d_rd_p, d_wr_p);
+	if (tx_ring->txrwb)
+		seq_printf(file, " TXRWB=%llu", *tx_ring->txrwb);
+	seq_putc(file, '\n');
+
+	nfp_net_debugfs_print_tx_descs(file, &nn->dp, r_vec, tx_ring,
+				       d_rd_p, d_wr_p);
+out:
+	rtnl_unlock();
+	return 0;
+}
+
+static int nfp_xdp_q_show(struct seq_file *file, void *data)
+{
+	return nfp_tx_q_show(file, data);
+}
+DEFINE_SHOW_ATTRIBUTE(nfp_xdp_q);
+
+void nfp_net_debugfs_vnic_add(struct nfp_net *nn, struct dentry *ddir)
+{
+	struct dentry *queues, *tx, *rx, *xdp;
+	char name[20];
+	int i;
+
+	if (IS_ERR_OR_NULL(nfp_dir))
+		return;
+
+	if (nfp_net_is_data_vnic(nn))
+		sprintf(name, "vnic%d", nn->id);
+	else
+		strcpy(name, "ctrl-vnic");
+	nn->debugfs_dir = debugfs_create_dir(name, ddir);
+
+	/* Create queue debugging sub-tree */
+	queues = debugfs_create_dir("queue", nn->debugfs_dir);
+
+	rx = debugfs_create_dir("rx", queues);
+	tx = debugfs_create_dir("tx", queues);
+	xdp = debugfs_create_dir("xdp", queues);
+
+	for (i = 0; i < min(nn->max_rx_rings, nn->max_r_vecs); i++) {
+		sprintf(name, "%d", i);
+		debugfs_create_file(name, 0400, rx,
+				    &nn->r_vecs[i], &nfp_rx_q_fops);
+		debugfs_create_file(name, 0400, xdp,
+				    &nn->r_vecs[i], &nfp_xdp_q_fops);
+	}
+
+	for (i = 0; i < min(nn->max_tx_rings, nn->max_r_vecs); i++) {
+		sprintf(name, "%d", i);
+		debugfs_create_file(name, 0400, tx,
+				    &nn->r_vecs[i], &nfp_tx_q_fops);
+	}
+}
+
+struct dentry *nfp_net_debugfs_device_add(struct pci_dev *pdev)
+{
+	return debugfs_create_dir(pci_name(pdev), nfp_dir);
+}
+
+void nfp_net_debugfs_dir_clean(struct dentry **dir)
+{
+	debugfs_remove_recursive(*dir);
+	*dir = NULL;
+}
+
+void nfp_net_debugfs_create(void)
+{
+	nfp_dir = debugfs_create_dir("nfp_net", NULL);
+}
+
+void nfp_net_debugfs_destroy(void)
+{
+	debugfs_remove_recursive(nfp_dir);
+	nfp_dir = NULL;
+}