On 2/11/20 4:54 pm, Ulf Hansson wrote: > + cqhci maintainers > > On Sat, 31 Oct 2020 at 13:54, Peter Geis <pgwipeout@xxxxxxxxx> wrote: >> >> Good Morning, >> >> We are seeing an issue on the rk3399 with certain Foresee emmc modules >> where the module reports it supports command queuing but fails in actual >> implementation. >> >> Unfortunately there doesn't seem to be any method for the mmc core code >> to detect this situation and disable command queue automatically. >> There also appears to be no way to disable it at runtime. Since v5.5, if you know how to use SDHCI debug quirks there is SDHCI_QUIRK_BROKEN_CQE e.g. kernel command line option sdhci.debug_quirks=0x0x2020000 >> >> Certain modified kernels have added a patch to enable runtime disable of >> command queue entirely, but this will affect mmc core as a whole and not >> just the buggy card. >> >> Does anyone have any insight into this issue? >> Thank you for your time. > > Unfortunate, not me personally. I assume the issue is either be card > specific or host specific. Before looking at a disable option, we need > to know more about what goes wrong, I think. > > Kind regards > Uffe > >> >> Very Respectfully, >> Peter Geis >> >> [ 64.472882] mmc2: cqhci: timeout for tag 2 >> [ 64.473349] mmc2: cqhci: ============ CQHCI REGISTER DUMP =========== >> [ 64.474057] mmc2: cqhci: Caps: 0x00000000 | Version: 0x00000510 >> [ 64.474763] mmc2: cqhci: Config: 0x00000000 | Control: 0x00000000 >> [ 64.475468] mmc2: cqhci: Int stat: 0x00000000 | Int enab: 0x00000000 >> [ 64.476172] mmc2: cqhci: Int sig: 0x00000000 | Int Coal: 0x00000000 >> [ 64.476875] mmc2: cqhci: TDL base: 0x00000000 | TDL up32: 0x00000000 TDL base cannot be zero, so the register values have been lost. Could be a reset issue like this one but for sdhci-of-arasan.c : https://lore.kernel.org/linux-mmc/20200819121848.16967-1-adrian.hunter@xxxxxxxxx/ >> [ 64.477578] mmc2: cqhci: Doorbell: 0x00000000 | TCN: 0x00000000 >> [ 64.478281] mmc2: cqhci: Dev queue: 0x00000000 | Dev Pend: 0x00000000 >> [ 64.478984] mmc2: cqhci: Task clr: 0x00000000 | SSC1: 0x00011000 >> [ 64.479687] mmc2: cqhci: SSC2: 0x00000000 | DCMD rsp: 0x00000000 >> [ 64.489785] mmc2: cqhci: RED mask: 0xfdf9a080 | TERRI: 0x00000000 >> [ 64.499774] mmc2: cqhci: Resp idx: 0x00000000 | Resp arg: 0x00000000 >> [ 64.509687] mmc2: sdhci: ============ SDHCI REGISTER DUMP =========== >> [ 64.519597] mmc2: sdhci: Sys addr: 0x00000000 | Version: 0x00001002 >> [ 64.529521] mmc2: sdhci: Blk size: 0x00007200 | Blk cnt: 0x00000000 >> [ 64.539440] mmc2: sdhci: Argument: 0x00010000 | Trn mode: 0x00000010 >> [ 64.549352] mmc2: sdhci: Present: 0x1fff0000 | Host ctl: 0x00000034 >> [ 64.559277] mmc2: sdhci: Power: 0x0000000b | Blk gap: 0x00000080 >> [ 64.569214] mmc2: sdhci: Wake-up: 0x00000000 | Clock: 0x00000007 >> [ 64.579061] mmc2: sdhci: Timeout: 0x0000000e | Int stat: 0x00000000 >> [ 64.588842] mmc2: sdhci: Int enab: 0x02ff4000 | Sig enab: 0x02ff4000 >> [ 64.598671] mmc2: sdhci: ACmd stat: 0x00000000 | Slot int: 0x00000000 >> [ 64.608446] mmc2: sdhci: Caps: 0x44edc880 | Caps_1: 0x800020f7 >> [ 64.618161] mmc2: sdhci: Cmd: 0x00000d1a | Max curr: 0x00000000 >> [ 64.627801] mmc2: sdhci: Resp[0]: 0x00000900 | Resp[1]: 0x642017d7 >> [ 64.637376] mmc2: sdhci: Resp[2]: 0x4e436172 | Resp[3]: 0x00880103 >> [ 64.646855] mmc2: sdhci: Host ctl2: 0x00000083 >> [ 64.656080] mmc2: sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0xf0628208 >> [ 64.665445] mmc2: sdhci: ============================================ >> [ 64.674998] mmc2: running CQE recovery >> >> [ 125.912941] mmc2: cqhci: timeout for tag 3 >> [ 125.921978] mmc2: cqhci: ============ CQHCI REGISTER DUMP =========== >> [ 125.931200] mmc2: cqhci: Caps: 0x00000000 | Version: 0x00000510 >> [ 125.940389] mmc2: cqhci: Config: 0x00000001 | Control: 0x00000000 >> [ 125.949499] mmc2: cqhci: Int stat: 0x00000000 | Int enab: 0x00000006 >> [ 125.958527] mmc2: cqhci: Int sig: 0x00000006 | Int Coal: 0x00000000 >> [ 125.967486] mmc2: cqhci: TDL base: 0x00000000 | TDL up32: 0x00000000 >> [ 125.976260] mmc2: cqhci: Doorbell: 0x00000000 | TCN: 0x00000000 >> [ 125.985065] mmc2: cqhci: Dev queue: 0x00000000 | Dev Pend: 0x00000000 >> [ 125.993698] mmc2: cqhci: Task clr: 0x00000000 | SSC1: 0x00011000 >> [ 126.002244] mmc2: cqhci: SSC2: 0x00000000 | DCMD rsp: 0x00000000 >> [ 126.010716] mmc2: cqhci: RED mask: 0xfdf9a080 | TERRI: 0x00000000 >> [ 126.019159] mmc2: cqhci: Resp idx: 0x00000000 | Resp arg: 0x00000000 >> [ 126.027525] mmc2: sdhci: ============ SDHCI REGISTER DUMP =========== >> [ 126.035955] mmc2: sdhci: Sys addr: 0x00000000 | Version: 0x00001002 >> [ 126.044258] mmc2: sdhci: Blk size: 0x00007200 | Blk cnt: 0x00000000 >> [ 126.052396] mmc2: sdhci: Argument: 0x00000001 | Trn mode: 0x00000010 >> [ 126.060370] mmc2: sdhci: Present: 0x1fff0000 | Host ctl: 0x00000034 >> [ 126.068241] mmc2: sdhci: Power: 0x0000000b | Blk gap: 0x00000080 >> [ 126.075978] mmc2: sdhci: Wake-up: 0x00000000 | Clock: 0x00000007 >> [ 126.083552] mmc2: sdhci: Timeout: 0x0000000e | Int stat: 0x00000000 >> [ 126.090937] mmc2: sdhci: Int enab: 0x02ff4000 | Sig enab: 0x02ff4000 >> [ 126.098219] mmc2: sdhci: ACmd stat: 0x00000000 | Slot int: 0x00000000 >> [ 126.105403] mmc2: sdhci: Caps: 0x44edc880 | Caps_1: 0x800020f7 >> [ 126.112649] mmc2: sdhci: Cmd: 0x00003013 | Max curr: 0x00000000 >> [ 126.119700] mmc2: sdhci: Resp[0]: 0x00400800 | Resp[1]: 0x642017d7 >> [ 126.126594] mmc2: sdhci: Resp[2]: 0x4e436172 | Resp[3]: 0x00880103 >> [ 126.133334] mmc2: sdhci: Host ctl2: 0x00000083 >> [ 126.139652] mmc2: sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0xf0628208 >> [ 126.146008] mmc2: sdhci: ============================================ >> [ 126.152361] mmc2: running CQE recovery >> >>
