| Message ID | 1623995165-25759-1-git-send-email-chunfeng.yun@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v2] usb: xhci-mtk: allow multiple Start-Split in a microframe | expand |
On Fri, Jun 18, 2021 at 1:46 PM Chunfeng Yun <chunfeng.yun@mediatek.com> wrote: > > This patch is used to relax bandwidth schedule by allowing multiple > Start-Split in the same microframe. > > Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Reviewed-and-Tested-by: Ikjoon Jang <ikjn@chromium.org> > --- > v2: fix build warning unused-but-set-variable > --- > 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 c07411d9b16f..cffcaf4dfa9f 100644 > --- a/drivers/usb/host/xhci-mtk-sch.c > +++ b/drivers/usb/host/xhci-mtk-sch.c > @@ -470,11 +470,9 @@ static int check_fs_bus_bw(struct mu3h_sch_ep_info *sch_ep, int offset) > > static int check_sch_tt(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; > > if (!sch_ep->sch_tt) > return 0; > @@ -491,10 +489,6 @@ static int check_sch_tt(struct mu3h_sch_ep_info *sch_ep, u32 offset) > 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); > > @@ -521,9 +515,6 @@ static int check_sch_tt(struct mu3h_sch_ep_info *sch_ep, u32 offset) > 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; > @@ -544,11 +535,9 @@ static void update_sch_tt(struct mu3h_sch_ep_info *sch_ep, bool used) > 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; > @@ -558,13 +547,6 @@ static void update_sch_tt(struct mu3h_sch_ep_info *sch_ep, bool used) > 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 cd3a37bb73e6..390cb5a86082 100644 > --- a/drivers/usb/host/xhci-mtk.h > +++ b/drivers/usb/host/xhci-mtk.h > @@ -24,12 +24,10 @@ > #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 > */ > 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; > }; > -- > 2.18.0 >
diff --git a/drivers/usb/host/xhci-mtk-sch.c b/drivers/usb/host/xhci-mtk-sch.c index c07411d9b16f..cffcaf4dfa9f 100644 --- a/drivers/usb/host/xhci-mtk-sch.c +++ b/drivers/usb/host/xhci-mtk-sch.c @@ -470,11 +470,9 @@ static int check_fs_bus_bw(struct mu3h_sch_ep_info *sch_ep, int offset) static int check_sch_tt(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; if (!sch_ep->sch_tt) return 0; @@ -491,10 +489,6 @@ static int check_sch_tt(struct mu3h_sch_ep_info *sch_ep, u32 offset) 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); @@ -521,9 +515,6 @@ static int check_sch_tt(struct mu3h_sch_ep_info *sch_ep, u32 offset) 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; @@ -544,11 +535,9 @@ static void update_sch_tt(struct mu3h_sch_ep_info *sch_ep, bool used) 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; @@ -558,13 +547,6 @@ static void update_sch_tt(struct mu3h_sch_ep_info *sch_ep, bool used) 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 cd3a37bb73e6..390cb5a86082 100644 --- a/drivers/usb/host/xhci-mtk.h +++ b/drivers/usb/host/xhci-mtk.h @@ -24,12 +24,10 @@ #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 */ 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; };
This patch is used to relax bandwidth schedule by allowing multiple Start-Split in the same microframe. Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> --- v2: fix build warning unused-but-set-variable --- drivers/usb/host/xhci-mtk-sch.c | 18 ------------------ drivers/usb/host/xhci-mtk.h | 2 -- 2 files changed, 20 deletions(-)