Edward Tomasz Napierala
220adb0416
Make sdhci(4) work after suspend/resume for chipsets that require
the frequency quirk. This makes it work on eg ThinkPad T420.
Without it, after resume one can see this:
mmc0: ACMD42 failed, RESULT: 4
mmcsd0: Error indicated: 1 Timeout
mmcsd0: Error indicated: 2 Bad CRC
mmcsd0: Error indicated: 2 Bad CRC
mmcsd0: Error indicated: 2 Bad CRC
mmcsd0: Error indicated: 2 Bad CRC
sdhci_pci0-slot0: Got data interrupt 0x00200000, but there is no active command.
sdhci_pci0-slot0: ============== REGISTER DUMP ==============
sdhci_pci0-slot0: Sys addr: 0x06317200 | Version: 0x00000502
sdhci_pci0-slot0: Blk size: 0x00000200 | Blk cnt: 0x00000010
sdhci_pci0-slot0: Argument: 0x00000200 | Trn mode: 0x00000037
sdhci_pci0-slot0: Present: 0x01ff0000 | Host ctl: 0x00000007
sdhci_pci0-slot0: Power: 0x0000000f | Blk gap: 0x00000000
sdhci_pci0-slot0: Wake-up: 0x00000000 | Clock: 0x00000007
sdhci_pci0-slot0: Timeout: 0x0000000d | Int stat: 0x00000000
sdhci_pci0-slot0: Int enab: 0x01ff00fb | Sig enab: 0x01ff00fb
sdhci_pci0-slot0: AC12 err: 0x00000000 | Slot int: 0x00000000
sdhci_pci0-slot0: Caps: 0x21e8c8b2 | Max curr: 0x00000040
sdhci_pci0-slot0: ===========================================
sdhci_pci0-slot0: Got data interrupt 0x00200000, but there is no active command.
sdhci_pci0-slot0: ============== REGISTER DUMP ==============
sdhci_pci0-slot0: Sys addr: 0x06317200 | Version: 0x00000502
sdhci_pci0-slot0: Blk size: 0x00000200 | Blk cnt: 0x00000001
sdhci_pci0-slot0: Argument: 0x00000040 | Trn mode: 0x00000013
sdhci_pci0-slot0: Present: 0x01ff0000 | Host ctl: 0x00000007
sdhci_pci0-slot0: Power: 0x0000000f | Blk gap: 0x00000000
sdhci_pci0-slot0: Wake-up: 0x00000000 | Clock: 0x00000007
sdhci_pci0-slot0: Timeout: 0x0000000d | Int stat: 0x00000000
autofs_flush: /net flushed
sdhci_pci0-slot0: Int enab: 0x01ff00fb | Sig enab: 0x01ff00fb
autofs_flush: /media flushed
sdhci_pci0-slot0: AC12 err: 0x00000000 | Slot int: 0x00000000
sdhci_pci0-slot0: Caps: 0x21e8c8b2 | Max curr: 0x00000040
sdhci_pci0-slot0: ===========================================
Afterwards all operations on /dev/mmcsd0 fail with EIO.
Reviewed by: jhb@
MFC after: 1 month
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D6265