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| author | Asutosh Das <quic_asutoshd@quicinc.com> | 2023-01-13 21:48:38 +0100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2023-01-14 03:03:36 +0100 |
| commit | 6e1d850acff9477ae4c18a73c19ef52841ac2010 (patch) | |
| tree | bb064933b0063e722eb8b9a788c624e09fcb9b50 /include/ufs/ufshci.h | |
| parent | scsi: uapi: Replace 0-length array with flexible array (diff) | |
| download | linux-6e1d850acff9477ae4c18a73c19ef52841ac2010.tar.xz linux-6e1d850acff9477ae4c18a73c19ef52841ac2010.zip | |
scsi: ufs: core: Probe for EXT_IID support
Task Tag is limited to 8 bits and this restricts the number of active I/Os
to 255. In multi-circular queue mode, this may not be enough. The
specification provides EXT_IID which can be used to increase the number of
I/Os if the UFS device and UFSHC support it. This patch adds support to
probe for EXT_IID support in UFS device and UFSHC.
Co-developed-by: Can Guo <quic_cang@quicinc.com>
Signed-off-by: Can Guo <quic_cang@quicinc.com>
Signed-off-by: Asutosh Das <quic_asutoshd@quicinc.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Reviewed-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'include/ufs/ufshci.h')
| -rw-r--r-- | include/ufs/ufshci.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/ufs/ufshci.h b/include/ufs/ufshci.h index 9346efea3eb3..f41bc7b03092 100644 --- a/include/ufs/ufshci.h +++ b/include/ufs/ufshci.h @@ -22,6 +22,7 @@ enum { /* UFSHCI Registers */ enum { REG_CONTROLLER_CAPABILITIES = 0x00, + REG_MCQCAP = 0x04, REG_UFS_VERSION = 0x08, REG_CONTROLLER_DEV_ID = 0x10, REG_CONTROLLER_PROD_ID = 0x14, @@ -69,6 +70,12 @@ enum { MASK_OUT_OF_ORDER_DATA_DELIVERY_SUPPORT = 0x02000000, MASK_UIC_DME_TEST_MODE_SUPPORT = 0x04000000, MASK_CRYPTO_SUPPORT = 0x10000000, + MASK_MCQ_SUPPORT = 0x40000000, +}; + +/* MCQ capability mask */ +enum { + MASK_EXT_IID_SUPPORT = 0x00000400, }; #define UFS_MASK(mask, offset) ((mask) << (offset)) |