Bug 257389

Summary:	MMCCAM : aliases are not correctly created for eMMC
Product:	Base System	Reporter:	Emmanuel Vadot <manu>
Component:	kern	Assignee:	freebsd-bugs (Nobody) <bugs>
Status:	New ---
Severity:	Affects Only Me
Priority:	---
Version:	CURRENT
Hardware:	Any
OS:	Any
Bug Depends on:
Bug Blocks:	257385

Description Emmanuel Vadot freebsd_committer

2021-07-24 17:55:46 UTC

In a MMCCAM enabled kernel we make some "mmcsd" aliases so we are backward compatible with non-MMCCAM kernel.
This seems to fail for eMMC.

Logs :

(pass0:sdhci_slot0:0:0:0): XPT info: CLK 399193, ...
(sdda0:sdhci_slot0:0:0:0): Periph created
(sdda0:sdhci_slot0:0:0:0): Capacity: 62537072640, sectors: 122142720
(sdda0:sdhci_slot0:0:0:0): Set SD freq to 52 MHz (min out of host f=198 MHz and card f=52 MHz)
sdhci_fdt0-slot0: Divider 2 for freq 49500000 (base 198000000)
(sdda0:sdhci_slot0:0:0:0): Set bus width to 8-bit (min of host 8-bit and card 8-bit)
(sdda0:sdhci_slot0:0:0:0): Partition type 'default', size 62537072640 
(sdda0:sdhci_slot0:0:0:0): Partition type 'boot0', size 4194304 
GEOM: new disk sdda0
(sdda0:sdhci_slot0:0:0:0): Partition type 'boot1', size 4194304 
(sdda0:sdhci_slot0:0:0:0): Partition type 'RPMB', size 4194304 
(sdda0:sdhci_slot0:0:0:0): Don't know what to do with RPMB partitions yet
sdda0 at sdhci_slot0 bus 0 scbus0 target 0 lun 0
sdda0: Relative addr: 00000002
Card features: <MMC Memory High-Capacity>
Card memory OCR: 40ff8080
sdda0: Serial Number 1A61E8CB
(sdda0:sdhci_slot0:0:0:0): XPT info: CLK 49500000, ...
sdda0: MMCHC DF4064 0.1 SN 1A61E8CB MFG 08/2001 by 69 0x0000
GEOM: new disk sdda0boot0
GEOM: new disk sdda0boot1
(sdda0:sdhci_slot0:0:0:0): Partition  0 -> 1
g_dev_taste: make_dev_alias_p() failed (name=mmcsd0, error=17)
(sdda0:sdhci_slot0:0:0:0): Partition  1 -> 2
(sdda0:sdhci_slot0:0:0:0): Partition  2 -> 0

This might be related to boot partitions but needs to be checked more.