From: Chunfeng Yun <chunfeng.yun@mediatek.com>
To: Mathias Nyman <mathias.nyman@intel.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Ikjoon Jang <ikjn@chromium.org>
Cc: Chunfeng Yun <chunfeng.yun@mediatek.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
<linux-usb@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-mediatek@lists.infradead.org>,
<linux-kernel@vger.kernel.org>,
Nicolas Boichat <drinkcat@chromium.org>,
Eddie Hung <eddie.hung@mediatek.com>,
Sergei Shtylyov <sergei.shtylyov@gmail.com>,
Alan Stern <stern@rowland.harvard.edu>
Subject: [PATCH v2 03/18] usb: xhci-mtk: get the microframe boundary for ESIT
Date: Mon, 8 Mar 2021 10:51:52 +0800 [thread overview]
Message-ID: <49e5a269a47984f3126a70c3fb471b0c2874b8c2.1615170625.git.chunfeng.yun@mediatek.com> (raw)
In-Reply-To: <d287899e6beb2fc1bfb8900c75a872f628ecde55.1615170625.git.chunfeng.yun@mediatek.com>
Tune the boundary for FS/LS ESIT due to CS:
For ISOC out-ep, the controller starts transfer data after
the first SS; for others, the data is already transferred
before the last CS.
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---
v2: fix typo and use ++/-- suggested by Sergei
---
drivers/usb/host/xhci-mtk-sch.c | 24 +++++++++++++++++++-----
1 file changed, 19 insertions(+), 5 deletions(-)
diff --git a/drivers/usb/host/xhci-mtk-sch.c b/drivers/usb/host/xhci-mtk-sch.c
index 8950d1f10a7f..450fa22b7dc7 100644
--- a/drivers/usb/host/xhci-mtk-sch.c
+++ b/drivers/usb/host/xhci-mtk-sch.c
@@ -513,22 +513,35 @@ static void update_sch_tt(struct usb_device *udev,
list_del(&sch_ep->tt_endpoint);
}
+static u32 get_esit_boundary(struct mu3h_sch_ep_info *sch_ep)
+{
+ u32 boundary = sch_ep->esit;
+
+ if (sch_ep->sch_tt) { /* LS/FS with TT */
+ /* tune for CS */
+ if (sch_ep->ep_type != ISOC_OUT_EP)
+ boundary++;
+ else if (boundary > 1) /* normally esit >= 8 for FS/LS */
+ boundary--;
+ }
+
+ return boundary;
+}
+
static int check_sch_bw(struct usb_device *udev,
struct mu3h_sch_bw_info *sch_bw, struct mu3h_sch_ep_info *sch_ep)
{
u32 offset;
- u32 esit;
u32 min_bw;
u32 min_index;
u32 worst_bw;
u32 bw_boundary;
+ u32 esit_boundary;
u32 min_num_budget;
u32 min_cs_count;
bool tt_offset_ok = false;
int ret;
- esit = sch_ep->esit;
-
/*
* Search through all possible schedule microframes.
* and find a microframe where its worst bandwidth is minimum.
@@ -537,7 +550,8 @@ static int check_sch_bw(struct usb_device *udev,
min_index = 0;
min_cs_count = sch_ep->cs_count;
min_num_budget = sch_ep->num_budget_microframes;
- for (offset = 0; offset < esit; offset++) {
+ esit_boundary = get_esit_boundary(sch_ep);
+ for (offset = 0; offset < sch_ep->esit; offset++) {
if (is_fs_or_ls(udev->speed)) {
ret = check_sch_tt(udev, sch_ep, offset);
if (ret)
@@ -546,7 +560,7 @@ static int check_sch_bw(struct usb_device *udev,
tt_offset_ok = true;
}
- if ((offset + sch_ep->num_budget_microframes) > sch_ep->esit)
+ if ((offset + sch_ep->num_budget_microframes) > esit_boundary)
break;
worst_bw = get_max_bw(sch_bw, sch_ep, offset);
--
2.18.0
next prev parent reply other threads:[~2021-03-08 2:53 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-08 2:51 [PATCH v2 01/18] usb: xhci-mtk: remove or operator for setting schedule parameters Chunfeng Yun
2021-03-08 2:51 ` [PATCH v2 02/18] usb: xhci-mtk: improve bandwidth scheduling with TT Chunfeng Yun
2021-03-08 2:51 ` Chunfeng Yun [this message]
2021-03-08 2:51 ` [PATCH v2 04/18] usb: xhci-mtk: add only one extra CS for FS/LS INTR Chunfeng Yun
2021-03-08 2:51 ` [PATCH v2 05/18] usb: xhci-mtk: use @sch_tt to check whether need do TT schedule Chunfeng Yun
2021-03-08 2:51 ` [PATCH v2 06/18] usb: xhci-mtk: add a function to (un)load bandwidth info Chunfeng Yun
2021-03-08 2:51 ` [PATCH v2 07/18] usb: xhci-mtk: add a function to get bandwidth boundary Chunfeng Yun
2021-03-08 2:51 ` [PATCH v2 08/18] usb: xhci-mtk: remove unnecessary members of mu3h_sch_tt struct Chunfeng Yun
2021-03-08 2:51 ` [PATCH v2 09/18] usb: xhci-mtk: use clear type instead of void Chunfeng Yun
2021-03-08 2:51 ` [PATCH v2 10/18] usb: xhci-mtk: add a member @speed in mu3h_sch_ep_info struct Chunfeng Yun
2021-03-08 2:52 ` [PATCH v2 11/18] usb: xhci-mtk: use @tt_info to check the FS/LS device is under a HS hub Chunfeng Yun
2021-03-08 2:52 ` [PATCH v2 12/18] usb: xhci-mtk: rebuild the way to get bandwidth domain Chunfeng Yun
2021-03-08 2:52 ` [PATCH v2 13/18] usb: xhci-mtk: add some schedule error number Chunfeng Yun
2021-03-08 2:52 ` [PATCH v2 14/18] usb: xhci-mtk: remove declaration of xhci_mtk_setup() Chunfeng Yun
2021-03-08 2:52 ` [PATCH v2 15/18] usb: xhci-mtk: support to build xhci-mtk-hcd.ko Chunfeng Yun
2021-03-08 11:06 ` Mathias Nyman
2021-03-08 2:52 ` [PATCH v2 16/18] usb: common: add function to get interval expressed in us unit Chunfeng Yun
2021-03-08 16:22 ` Alan Stern
2021-03-08 2:52 ` [PATCH v2 17/18] usb: xhci-mtk: print debug info of endpoint interval Chunfeng Yun
2021-03-08 2:52 ` [PATCH v2 18/18] usb: common: move function's kerneldoc next to its definition Chunfeng Yun
2021-03-08 13:25 ` Greg Kroah-Hartman
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