From: Chunfeng Yun <chunfeng.yun@xxxxxxxxxxxx> [ Upstream commit d3997fce189fc4423169c51a81ba5ca01144d886 ] This patch is used to relax bandwidth schedule by allowing multiple Start-Split in the same microframe. Reviewed-and-Tested-by: Ikjoon Jang <ikjn@xxxxxxxxxxxx> Signed-off-by: Chunfeng Yun <chunfeng.yun@xxxxxxxxxxxx> Link: https://lore.kernel.org/r/1623995165-25759-1-git-send-email-chunfeng.yun@xxxxxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> Stable-dep-of: 548011957d1d ("usb: xhci-mtk: relax TT periodic bandwidth allocation") Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/usb/host/xhci-mtk-sch.c | 18 ------------------ drivers/usb/host/xhci-mtk.h | 2 -- 2 files changed, 20 deletions(-) diff --git a/drivers/usb/host/xhci-mtk-sch.c b/drivers/usb/host/xhci-mtk-sch.c index a6ec75bf2def..f048af9c5335 100644 --- a/drivers/usb/host/xhci-mtk-sch.c +++ b/drivers/usb/host/xhci-mtk-sch.c @@ -430,11 +430,9 @@ static int check_fs_bus_bw(struct mu3h_sch_ep_info *sch_ep, int offset) static int check_sch_tt(struct usb_device *udev, struct mu3h_sch_ep_info *sch_ep, u32 offset) { - struct mu3h_sch_tt *tt = sch_ep->sch_tt; u32 extra_cs_count; u32 start_ss, last_ss; u32 start_cs, last_cs; - int i; start_ss = offset % 8; @@ -448,10 +446,6 @@ static int check_sch_tt(struct usb_device *udev, if (!(start_ss == 7 || last_ss < 6)) return -ESCH_SS_Y6; - for (i = 0; i < sch_ep->cs_count; i++) - if (test_bit(offset + i, tt->ss_bit_map)) - return -ESCH_SS_OVERLAP; - } else { u32 cs_count = DIV_ROUND_UP(sch_ep->maxpkt, FS_PAYLOAD_MAX); @@ -478,9 +472,6 @@ static int check_sch_tt(struct usb_device *udev, if (cs_count > 7) cs_count = 7; /* HW limit */ - if (test_bit(offset, tt->ss_bit_map)) - return -ESCH_SS_OVERLAP; - sch_ep->cs_count = cs_count; /* one for ss, the other for idle */ sch_ep->num_budget_microframes = cs_count + 2; @@ -502,11 +493,9 @@ static void update_sch_tt(struct usb_device *udev, struct mu3h_sch_tt *tt = sch_ep->sch_tt; u32 base, num_esit; int bw_updated; - int bits; int i, j; num_esit = XHCI_MTK_MAX_ESIT / sch_ep->esit; - bits = (sch_ep->ep_type == ISOC_OUT_EP) ? sch_ep->cs_count : 1; if (used) bw_updated = sch_ep->bw_cost_per_microframe; @@ -516,13 +505,6 @@ static void update_sch_tt(struct usb_device *udev, for (i = 0; i < num_esit; i++) { base = sch_ep->offset + i * sch_ep->esit; - for (j = 0; j < bits; j++) { - if (used) - set_bit(base + j, tt->ss_bit_map); - else - clear_bit(base + j, tt->ss_bit_map); - } - for (j = 0; j < sch_ep->cs_count; j++) tt->fs_bus_bw[base + j] += bw_updated; } diff --git a/drivers/usb/host/xhci-mtk.h b/drivers/usb/host/xhci-mtk.h index 2fc0568ba054..3e2c607b5d64 100644 --- a/drivers/usb/host/xhci-mtk.h +++ b/drivers/usb/host/xhci-mtk.h @@ -20,14 +20,12 @@ #define XHCI_MTK_MAX_ESIT 64 /** - * @ss_bit_map: used to avoid start split microframes overlay * @fs_bus_bw: array to keep track of bandwidth already used for FS * @ep_list: Endpoints using this TT * @usb_tt: usb TT related * @tt_port: TT port number */ struct mu3h_sch_tt { - DECLARE_BITMAP(ss_bit_map, XHCI_MTK_MAX_ESIT); u32 fs_bus_bw[XHCI_MTK_MAX_ESIT]; struct list_head ep_list; struct usb_tt *usb_tt; -- 2.35.1
