From: Bart Van Assche <bvanassche@acm.org>
To: Asutosh Das <quic_asutoshd@quicinc.com>,
mani@kernel.org, quic_nguyenb@quicinc.com,
quic_xiaosenh@quicinc.com, quic_cang@quicinc.com,
quic_nitirawa@quicinc.com, quic_rampraka@quicinc.com,
quic_richardp@quicinc.com, stanley.chu@mediatek.com,
adrian.hunter@intel.com, avri.altman@wdc.com, beanhuo@micron.com,
martin.petersen@oracle.com
Cc: linux-scsi@vger.kernel.org, Alim Akhtar <alim.akhtar@samsung.com>,
"James E.J. Bottomley" <jejb@linux.ibm.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
Jinyoung Choi <j-young.choi@samsung.com>,
Kiwoong Kim <kwmad.kim@samsung.com>,
open list <linux-kernel@vger.kernel.org>,
"moderated list:ARM/Mediatek SoC support"
<linux-arm-kernel@lists.infradead.org>,
"moderated list:ARM/Mediatek SoC support"
<linux-mediatek@lists.infradead.org>
Subject: Re: [PATCH v1 01/16] ufs: core: Probe for ext_iid support
Date: Fri, 30 Sep 2022 11:23:13 -0700 [thread overview]
Message-ID: <2f5a8742-b25d-d6b3-c6a4-1c119a94d569@acm.org> (raw)
In-Reply-To: <ff7cdcdef82f6c9d709e2b6ed5d91e255327b780.1663894792.git.quic_asutoshd@quicinc.com>
On 9/22/22 18:05, Asutosh Das wrote:
> + hba->mcq_capabilities = ufshcd_readl(hba, REG_MCQCAP);
What value is reported when reading the REG_MCQCAP register on an UFSHCI
3.0 controller? -1 or 0?
> + hba->ext_iid_sup = (hba->mcq_capabilities & MASK_EXT_IID_SUPPORT) >>
> + EXT_IID_CAP_SHIFT;
[ ... ]
> + if (dev_info->wspecversion < 0x400)
> + goto out;
Isn't this version check superfluous? Only UFSHCI 4.0 controllers should
support the extended IID feature.
> + ext_ufs_feature = get_unaligned_be32(desc_buf + DEVICE_DESC_PARAM_EXT_UFS_FEATURE_SUP);
The above change introduces a third instance of this code. Please
introduce a helper function that does something like the following and
replace the above line with a call to that helper function:
if (hba->desc_size[QUERY_DESC_IDN_DEVICE] <
DEVICE_DESC_PARAM_EXT_UFS_FEATURE_SUP + 4)
return 0;
return get_unaligned_be32(desc_buf +
DEVICE_DESC_PARAM_EXT_UFS_FEATURE_SUP);
> +out:
> + dev_info->b_ext_iid_en = !!ext_iid_en;
Please remove "!!". This conversion happens implicitly when assigning to
a boolean variable.
Thanks,
Bart.
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next prev parent reply other threads:[~2022-09-30 18:24 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-23 1:05 [PATCH v1 00/16] Add Multi Circular Queue Support Asutosh Das
2022-09-23 1:05 ` [PATCH v1 01/16] ufs: core: Probe for ext_iid support Asutosh Das
2022-09-26 14:08 ` Manivannan Sadhasivam
2022-09-30 18:23 ` Bart Van Assche [this message]
2022-10-04 22:09 ` Asutosh Das
2022-09-23 1:05 ` [PATCH v1 02/16] ufs: core: Introduce Multi-circular queue capability Asutosh Das
2022-09-24 8:13 ` Avri Altman
2022-09-26 21:34 ` Asutosh Das
2022-09-26 14:27 ` Manivannan Sadhasivam
2022-09-23 1:05 ` [PATCH v1 03/16] ufs: core: Defer adding host to scsi if mcq is supported Asutosh Das
2022-09-30 18:32 ` Bart Van Assche
2022-10-04 18:51 ` Asutosh Das
2022-09-23 1:05 ` [PATCH v1 04/16] ufs: core: mcq: Introduce Multi Circular Queue Asutosh Das
2022-09-26 14:49 ` Manivannan Sadhasivam
2022-09-26 21:32 ` Asutosh Das
2022-09-30 18:37 ` Bart Van Assche
2022-09-23 1:05 ` [PATCH v1 05/16] ufs: core: mcq: Configure resource regions Asutosh Das
2022-09-26 15:07 ` Manivannan Sadhasivam
2022-09-30 18:42 ` Bart Van Assche
2022-09-23 1:05 ` [PATCH v1 06/16] ufs: core: mcq: Calculate queue depth Asutosh Das
2022-09-26 15:22 ` Manivannan Sadhasivam
2022-09-26 21:23 ` Asutosh Das
2022-09-23 1:05 ` [PATCH v1 07/16] ufs: core: mcq: Allocate memory for mcq mode Asutosh Das
2022-09-26 15:45 ` Manivannan Sadhasivam
2022-10-03 20:25 ` Asutosh Das
2022-09-23 1:05 ` [PATCH v1 08/16] ufs: core: mcq: Configure operation and runtime interface Asutosh Das
2022-09-23 1:05 ` [PATCH v1 09/16] ufs: core: mcq: Use shared tags for MCQ mode Asutosh Das
2022-09-23 1:05 ` [PATCH v1 10/16] ufs: core: Prepare ufshcd_send_command for mcq Asutosh Das
2022-09-23 1:05 ` [PATCH v1 11/16] ufs: core: mcq: Find hardware queue to queue request Asutosh Das
2022-09-23 1:05 ` [PATCH v1 12/16] ufs: core: Prepare for completion in mcq Asutosh Das
2022-09-30 20:43 ` Bart Van Assche
2022-09-23 1:05 ` [PATCH v1 13/16] ufs: mcq: Add completion support of a cqe Asutosh Das
2022-09-30 20:41 ` Bart Van Assche
2022-09-23 1:05 ` [PATCH v1 14/16] ufs: core: mcq: Add completion support in poll Asutosh Das
2022-09-23 1:05 ` [PATCH v1 15/16] ufs: core: mcq: Enable Multi Circular Queue Asutosh Das
2022-09-30 20:32 ` Bart Van Assche
2022-09-23 1:05 ` [PATCH v1 16/16] ufs: qcom-host: Enable multi circular queue capability Asutosh Das
2022-09-26 13:49 ` [PATCH v1 00/16] Add Multi Circular Queue Support Manivannan Sadhasivam
2022-09-26 18:55 ` Asutosh Das
2022-09-30 20:44 ` Bart Van Assche
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