kern/54959: sdmmc_mem_enable failed with error 60

[prlw1%cam.ac.uk@localhost]

>Number:         54959
>Category:       kern
>Synopsis:       sdmmc_mem_enable failed with error 60
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Feb 13 14:55:00 +0000 2020
>Originator:     Patrick Welche
>Release:        NetBSD-9.99.46 RPI kernel
>Organization:
>Environment:
>Description:
Essentially sdmmc1 is unhappy which means that useful things like bwfm
wireless interface can't attach. Apparently not a local problem:

https://mail-index.netbsd.org/port-arm/2020/02/13/msg006499.html

Oddly given below, the ld0 attached to sdmmc0 seems to behaving properly.

[   1.0400710] sdmmc0 at bcmsdhost0
[   1.0501180] sdhc0: SDHC 3.0, rev 153, platform DMA, 200000 kHz, HS 3.3V, re-tuning mode 1, 1024 byte blocks
[   1.0601610] sdmmc1 at sdhc0 slot 0
[   1.1917650] sdmmc0: direct I/O error 5, r=6 p=0xc96f8f24 write
[   1.2045570] sdmmc_io_send_op_cond: ocr = 0
[   1.2045570] sdmmc_io_send_op_cond: error = 5
[   1.2045570] sdmmc0: sdmmc_mem_send_op_cond: ocr=0
[   1.2177810] sdmmc0: sdmmc_mem_send_op_cond: error=0, ocr=0xff8000
[   1.2177810] sdmmc0: host_ocr 0x40300000
[   1.2278210] sdmmc0: card_ocr 0x00ff8000
[   1.2278210] sdmmc0: sdmmc_mem_send_if_cond: error=0, ocr=0x1aa
[   1.2278210] sdmmc0: sdmmc_mem_send_op_cond: ocr=0x40300000
[   1.2431540] sdhc0: cmd crc error
[   1.2566310] sdmmc_io_send_op_cond: ocr = 0
[   1.2566310] sdmmc0: sdmmc_mem_send_op_cond: error=0, ocr=0xc0ff8000
[   1.2666650] sdmmc_dump_data: CID
[   1.2666650] --------+--------------------------------------------------+------------------+
[   1.2781520] offset  | +0 +1 +2 +3 +4 +5 +6 +7  +8 +9 +a +b +c +d +e +f | data             |
[   1.2781520] --------+--------------------------------------------------+------------------+
[   1.2950730] 00000000| 2c 01 f5 14 d4 da 60 47  32 33 44 53 48 50 27 00 | ,.....`G23DSHP'. |
[   1.2950730] --------+--------------------------------------------------+------------------+
[   1.3119880] sdmmc0: couldn't read CID
[   1.3119880] sdmmc_dump_data: CSD
[   1.3119880] --------+--------------------------------------------------+------------------+
[   1.3277820] offset  | +0 +1 +2 +3 +4 +5 +6 +7  +8 +9 +a +b +c +d +e +f | data             |
[   1.3277820] --------+--------------------------------------------------+------------------+
[   1.3447060] 00000000| 00 40 0a 80 7f df e8 00  00 59 5b 32 00 0e 40 00 | .@.......Y[2..@. |
[   1.3447060] --------+--------------------------------------------------+------------------+
[   1.3616320] sdmmc0: SD Ver.2.0
[   1.3616320] sdmmc0: CID: mid=0x27 oid=0x5048 pnm="SD32G" rev=0x60 psn=0xdad414f5 mdt=12c
[   1.3729040] sdmmc0: sdmmc_mem_set_blocklen: read_bl_len=512 sector_size=512
[   1.3729040] sdhc0: cmd crc error
[   1.3932800] sdmmc_io_send_op_cond: error = 60
[   1.3932800] sdmmc0: sdmem_mem_send_scr: error = 0
[   1.3932800] sdmmc_dump_data: SCR
[   1.4050230] --------+--------------------------------------------------+------------------+
[   1.4050230] offset  | +0 +1 +2 +3 +4 +5 +6 +7  +8 +9 +a +b +c +d +e +f | data             |
[   1.4219430] --------+--------------------------------------------------+------------------+
[   1.4219430] 00000000| 02 05 80 83 01 00 00 00                          | ........         |
[   1.4326090] --------+--------------------------------------------------+------------------+
[   1.4473220] sdmmc0: sdmmc_mem_decode_scr: 0002058083010000 ver=0, spec=2, bus width=5
[   1.4473220] sdmmc0: change bus width
[   1.4588680] sdmmc0: switch func mode 0
[   1.4588680] sdhc0: cmd crc error
[   1.4588680] sdhc0: cmd timeout error
[   1.4795930] sdmmc1: sdmmc_mem_send_op_cond: ocr=0
[   1.4795930] sdmmc0: card supports mode Default/SDR12
[   1.4795930] sdmmc0: card supports mode High-Speed/SDR25
[   1.4939790] sdmmc0: using mode High-Speed/SDR25
[   1.4939790] sdmmc0: switch func mode 1(func=1)
[   1.4939790] sdhc0: cmd crc error
[   1.5163900] sdmmc1: sdmmc_mem_send_op_cond: error=60, ocr=0
[   1.5163900] sdmmc1: switch to MMC mode
[   1.5163900] sdmmc1: sdmmc_mem_send_op_cond: ocr=0
[   1.5299200] sdhc0: cmd crc error
[   1.5432470] sdmmc1: sdmmc_mem_send_op_cond: error=60, ocr=0
[   1.5432470] sdmmc1: couldn't read memory OCR
[   1.5432470] sdmmc1: sdmmc_mem_enable failed with error 60
[   1.5580110] sdmmc1: couldn't enable card: 60
[   1.5580110] sdmmc0: sdmem_mem_send_ssr: error = 0
[   1.5580110] sdmmc_dump_data: SSR
[   1.5703480] --------+--------------------------------------------------+------------------+
[   1.5703480] offset  | +0 +1 +2 +3 +4 +5 +6 +7  +8 +9 +a +b +c +d +e +f | data             |
[   1.5872630] --------+--------------------------------------------------+------------------+
[   1.5872630] 00000000| 00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00 | ................ |
[   1.5979280] 00000010| 00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00 | ................ |
[   1.6079730] 00000020| 00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00 | ................ |
[   1.6181080] 00000030| 00 19 33 01 00 90 03 04  00 00 00 05 00 00 00 80 | ..3............. |
[   1.6281590] --------+--------------------------------------------------+------------------+
[   1.6281590] sdmmc0: SD card status: 4-bit, C10, U1
[   1.6400650] ld0 at sdmmc0: <0x27:0x5048:SD32G:0x60:0xdad414f5:0x12c>
[   1.6501120] ld0: 29808 MB, 7570 cyl, 128 head, 63 sec, 512 bytes/sect x 61046784 sectors

>How-To-Repeat:
e.g. build earmv6hf release, dd rpi.img to a card, and boot a rpi 0 w.
Note lack of bwfm.
>Fix: