thanks，see the attachment for detailed log. if there 's any question，feel free to contact me. Best Regards ‘ Runa
________________________________ 发件人: Kevin O'Connor <ke...@koconnor.net> 发送时间: 2020年8月10日 23:46 收件人: RunaGuo-oc; Gerd Hoffmann 抄送: seabios@seabios.org 主题: Re: [SeaBIOS] [PATCH] AHCI: The attached ATA device cannot be detected when binding AHCI controller to Virtual Machine On Tue, Aug 04, 2020 at 11:17:05AM -0000, runaguo...@zhaoxin.com wrote: > When binding AHCI controller to virtual machine, the attached ATA device > cannot be recognized for the following reason: > The first Identify PACKET CMD will be failed without dobut which will lead > PORT_IRQ_TF_ERR be set in PxIS due to ERR bit set to 1 in D2H Register > FIS(PxTFD.STS.ERR=1). In this case, the first CMD will be timeout for seabios > only polling PORT_IRQ_D2H_REG_FIS & PORT_IRQ_PIOS_FIS before triggering error > handling which leads AHCI controller is an error state, then the second > IDENTIFY CMD cannot be issued by AHCI controller, no ATA device will be > detected. > > In AHCI spec HBA Port State Machine section(5.3.8.1 and 5.3.16.5), we can > see this sequence: RegFIS:Entry --> ERR:FatalTaskfile (PxTFD.STS.ERR=1) --> > ERR:WaitForClear, no entry for PORT_IRQ_D2H_REG_FIS/PORT_IRQ_PIOS_FIS to be > set at this time. > > May be we can also add PORT_IRQ_TF_ERR bit check when polling command > completion status? Thanks. Gerd wrote the AHCI support. (As well as the XHCI support referenced in your other report.) Hopefully he'll be able to comment. -Kevin
seriallog.log
Description: seriallog.log
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