Date: Fri, 27 Dec 2019 01:50:25 +0000 From: <Shichun.Ma@dell.com> To: <hps@selasky.org>, <freebsd-usb@freebsd.org> Cc: <Shunchao.Hu@dell.com> Subject: Re: can not receive xfer interrupt after stop xfer is called intel XHCI Gemini Lake SOC Message-ID: <1577411424906.21267@Dell.com> In-Reply-To: <acc5ccc7-d76c-d9ff-f9d5-f63ac40227d6@selasky.org> References: <1577408331523.24347@Dell.com>, <acc5ccc7-d76c-d9ff-f9d5-f63ac40227d6@selasky.org>
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Hi HPS,=0A= XHCI spec just tells:=0A= The configure Endpoint command TRB evalutes the bandwidth and resouce reqir= ement of the endpoints selected by the command.=0A= So I don't think this command can be call to one endpoint several times. = =0A= How, I tried to call configure endpoint with DC (disable configure), it can= 't help.=0A= =0A= >From XHCI spec's view, "reset Endpoint command" is enough to stop xfer.=0A= =0A= Thanks & Regards,=0A= =0A= Shichun Ma=0A= Software Engineer=0A= Dell | Cloud Client Computing=0A= office +86 10 82862579, Mobile +86 13241851528=0A= shichun_ma@dell.com=0A= =0A= =0A= =0A= ________________________________________=0A= From: Hans Petter Selasky <hps@selasky.org>=0A= Sent: Friday, December 27, 2019 9:06 AM=0A= To: Ma, Horse; freebsd-usb@freebsd.org=0A= Subject: Re: can not receive xfer interrupt after stop xfer is called intel= XHCI Gemini Lake SOC=0A= =0A= [EXTERNAL EMAIL]=0A= =0A= On 2019-12-27 00:58, Shichun.Ma@dell.com wrote:=0A= > This issue can be avoided by do not call "xhci_cmd_configure_ep " in "xh= ci_configure_reset_endpoint"=0A= =0A= What does the XHCI specification say about this?=0A= =0A= Is the XHCI host controller broken?=0A= =0A= --HPS=0A=
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