From 17da9795c115dcfac49338ea044fa9413f5d0763 Mon Sep 17 00:00:00 2001 From: Siddharth Vadapalli Date: Mon, 30 Sep 2024 15:04:07 +0530 Subject: usb: gadget: cdns3: Fix missing cache operations for non-zero Endpoints Transfer initiation and completion for the non-zero Endpoints are handled by cdns3_ep_run_transfer() and cdns3_transfer_completed() respectively. Failing to flush the cache associated with the TRB Pool within cdns3_ep_run_transfer() results in the transfers never being initiated. Similarly, failing to invalidate the cache associated with the TRB pool within cdns3_transfer_completed() results in the transfers never being completed. Fix this. Fixes: 7e91f6ccdc84 ("usb: Add Cadence USB3 host and gadget driver") Signed-off-by: Siddharth Vadapalli Reviewed-by: Roger Quadros Reviewed-by: Marek Vasut --- drivers/usb/cdns3/gadget.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/usb/cdns3/gadget.c b/drivers/usb/cdns3/gadget.c index 32b2c41206..ac7e469469 100644 --- a/drivers/usb/cdns3/gadget.c +++ b/drivers/usb/cdns3/gadget.c @@ -965,6 +965,12 @@ int cdns3_ep_run_transfer(struct cdns3_endpoint *priv_ep, if (priv_dev->dev_ver <= DEV_VER_V2) cdns3_wa1_tray_restore_cycle_bit(priv_dev, priv_ep); + /* Flush TRBs */ + flush_dcache_range((unsigned long)priv_ep->trb_pool, + (unsigned long)priv_ep->trb_pool + + ROUND(sizeof(struct cdns3_trb) * priv_ep->num_trbs, + CONFIG_SYS_CACHELINE_SIZE)); + trace_cdns3_prepare_trb(priv_ep, priv_req->trb); /* @@ -1153,6 +1159,13 @@ static void cdns3_transfer_completed(struct cdns3_device *priv_dev, priv_ep->endpoint.desc->bEndpointAddress); #endif + /* Invalidate TRBs */ + invalidate_dcache_range((unsigned long)priv_ep->trb_pool, + (unsigned long)priv_ep->trb_pool + + ROUND(sizeof(struct cdns3_trb) * + priv_ep->num_trbs, + CONFIG_SYS_CACHELINE_SIZE)); + if (!cdns3_request_handled(priv_ep, priv_req)) goto prepare_next_td; -- cgit v1.2.3