linux-kernel - [PATCH] xhci: debugfs: Add virt endpoint state to xhci debugfs

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Message-ID: <63B520E210CBE3F6+20240920051159.1363806-1-wangyuli@uniontech.com>
Date: Fri, 20 Sep 2024 13:11:59 +0800
From: WangYuli <wangyuli@...ontech.com>
To: mathias.nyman@...el.com,
	gregkh@...uxfoundation.org,
	raoxu@...ontech.com,
	wangyuli@...ontech.com
Cc: linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	guanwentao@...ontech.com,
	zhanjun@...ontech.com
Subject: [PATCH] xhci: debugfs: Add virt endpoint state to xhci debugfs

The ring data structure of each xHCI endpoint might stop sending
data due to the virt endpoint state.

Show the virt endpoint state within the endpoint context via debugfs
to facilitate debugging.

Co-developed-by: Xu Rao <raoxu@...ontech.com>
Signed-off-by: Xu Rao <raoxu@...ontech.com>
Signed-off-by: WangYuli <wangyuli@...ontech.com>
---
 drivers/usb/host/xhci-debugfs.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/host/xhci-debugfs.c b/drivers/usb/host/xhci-debugfs.c
index f8ba15e7c225..35247cd50c74 100644
--- a/drivers/usb/host/xhci-debugfs.c
+++ b/drivers/usb/host/xhci-debugfs.c
@@ -291,12 +291,13 @@ static int xhci_endpoint_context_show(struct seq_file *s, void *unused)
 	for (ep_index = 0; ep_index < 31; ep_index++) {
 		ep_ctx = xhci_get_ep_ctx(xhci, dev->out_ctx, ep_index);
 		dma = dev->out_ctx->dma + (ep_index + 1) * CTX_SIZE(xhci->hcc_params);
-		seq_printf(s, "%pad: %s\n", &dma,
+		seq_printf(s, "%pad: %s, virt_state:%#x\n", &dma,
 			   xhci_decode_ep_context(str,
 						  le32_to_cpu(ep_ctx->ep_info),
 						  le32_to_cpu(ep_ctx->ep_info2),
 						  le64_to_cpu(ep_ctx->deq),
-						  le32_to_cpu(ep_ctx->tx_info)));
+						  le32_to_cpu(ep_ctx->tx_info)),
+						  dev->eps[ep_index].ep_state);
 	}
 
 	return 0;
-- 
2.45.2