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ANDROID: scsi: ufs: Add quirk bit for controllers that don't play well with inline crypto

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A number of devices (hikey960 and db845c at least) don't work
well with the inline crypto enablement, causing them to crash in
early boot.

In order to allow those boards to continue booting, add a
BROKEN_CRYPTO quirk flag that the drivers can enable until we
sort out how/if they can be fixed.

Bug: 137270441
Change-Id: I9f2c3d75412e0aaa22fe6e7c9929cd18b1efa9ba
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Satya Tangirala <satyat@google.com>
This commit is contained in:
John Stultz 2019-11-08 04:42:58 +00:00 committed by Alistair Delva
parent d2e05e75f6
commit 86739e75ac
2 changed files with 9 additions and 1 deletions
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3
drivers/scsi/ufs/ufshcd-crypto.c
View File

@ -313,7 +313,8 @@ int ufshcd_hba_init_crypto_spec(struct ufs_hba *hba,
hba->caps &= ~UFSHCD_CAP_CRYPTO;
/* Return 0 if crypto support isn't present */
if (!(hba->capabilities & MASK_CRYPTO_SUPPORT))
if (!(hba->capabilities & MASK_CRYPTO_SUPPORT) ||
(hba->quirks & UFSHCD_QUIRK_BROKEN_CRYPTO))
goto out;
/*

7
drivers/scsi/ufs/ufshcd.h
View File

@ -647,6 +647,13 @@ struct ufs_hba {
* enabled via HCE register.
*/
#define UFSHCI_QUIRK_BROKEN_HCE 0x400
/*
* This quirk needs to be enabled if the host controller advertises
* inline encryption support but it doesn't work correctly.
*/
#define UFSHCD_QUIRK_BROKEN_CRYPTO 0x800
unsigned int quirks; /* Deviations from standard UFSHCI spec. */
/* Device deviations from standard UFS device spec. */