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| author | Chunfeng Yun <chunfeng.yun@mediatek.com> | 2023-08-30 15:28:19 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-10-02 17:32:18 +0300 |
| commit | ba6b83a910b6d8a9379bda55cbf06cb945473a96 (patch) | |
| tree | f288e5916ae55df894d9c24ef0c1bf3ebc939fb2 /drivers/usb/host/xhci-mtk.h | |
| parent | 0e650c94a422be51b1dbe3cb4598ab247adabb29 (diff) | |
| download | linux-ba6b83a910b6d8a9379bda55cbf06cb945473a96.tar.xz | |
usb: xhci-mtk: add a bandwidth budget table
In order to estimate when fs/ls transactions appear on a downstream bus,
the host must calculate a best case full-speed budget, use a table to
track how many bytes occure in each microframe.
This patch is prepared for introducing an improved bandwidth scheduling.
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/20230830122820.18859-1-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/xhci-mtk.h')
| -rw-r--r-- | drivers/usb/host/xhci-mtk.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/usb/host/xhci-mtk.h b/drivers/usb/host/xhci-mtk.h index faaaf05e36ce..ef8af20b5e88 100644 --- a/drivers/usb/host/xhci-mtk.h +++ b/drivers/usb/host/xhci-mtk.h @@ -58,7 +58,6 @@ struct mu3h_sch_bw_info { * @num_esit: number of @esit in a period * @num_budget_microframes: number of continuous uframes * (@repeat==1) scheduled within the interval - * @bw_cost_per_microframe: bandwidth cost per microframe * @hentry: hash table entry * @endpoint: linked into bandwidth domain which it belongs to * @tt_endpoint: linked into mu3h_sch_tt's list which it belongs to @@ -83,12 +82,12 @@ struct mu3h_sch_bw_info { * times; 1: distribute the (bMaxBurst+1)*(Mult+1) packets * according to @pkts and @repeat. normal mode is used by * default + * @bw_budget_table: table to record bandwidth budget per microframe */ struct mu3h_sch_ep_info { u32 esit; u32 num_esit; u32 num_budget_microframes; - u32 bw_cost_per_microframe; struct list_head endpoint; struct hlist_node hentry; struct list_head tt_endpoint; @@ -108,6 +107,7 @@ struct mu3h_sch_ep_info { u32 pkts; u32 cs_count; u32 burst_mode; + u32 bw_budget_table[]; }; #define MU3C_U3_PORT_MAX 4 |