From: Manivannan Sadhasivam <mani@kernel.org>
To: Asutosh Das <quic_asutoshd@quicinc.com>
Cc: quic_cang@quicinc.com, martin.petersen@oracle.com,
linux-scsi@vger.kernel.org, quic_nguyenb@quicinc.com,
quic_xiaosenh@quicinc.com, stanley.chu@mediatek.com,
eddie.huang@mediatek.com, daejun7.park@samsung.com,
bvanassche@acm.org, avri.altman@wdc.com, beanhuo@micron.com,
linux-arm-msm@vger.kernel.org,
Alim Akhtar <alim.akhtar@samsung.com>,
"James E.J. Bottomley" <jejb@linux.ibm.com>,
Jinyoung Choi <j-young.choi@samsung.com>,
open list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v5 03/16] ufs: core: Introduce Multi-circular queue capability
Date: Mon, 28 Nov 2022 19:59:04 +0530 [thread overview]
Message-ID: <20221128142904.GC62721@thinkpad> (raw)
In-Reply-To: <1a84dab482956b19cb513dc46e9689e07316e357.1669176158.git.quic_asutoshd@quicinc.com>
On Tue, Nov 22, 2022 at 08:10:16PM -0800, Asutosh Das wrote:
> Add support to check for MCQ capability in the UFSHC.
> Add a module parameter to disable MCQ if needed.
>
> 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>
Couple of nitpicks below, with those addressed:
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
> ---
> drivers/ufs/core/ufshcd.c | 31 +++++++++++++++++++++++++++++++
> include/ufs/ufshcd.h | 2 ++
> 2 files changed, 33 insertions(+)
>
> diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
> index 66b797f..08be8ad 100644
> --- a/drivers/ufs/core/ufshcd.c
> +++ b/drivers/ufs/core/ufshcd.c
> @@ -89,6 +89,33 @@
> /* Polling time to wait for fDeviceInit */
> #define FDEVICEINIT_COMPL_TIMEOUT 1500 /* millisecs */
>
> +/* UFSHC 4.0 compliant HC support this mode, refer param_set_mcq_mode() */
> +static bool use_mcq_mode = true;
> +
> +static inline bool is_mcq_supported(struct ufs_hba *hba)
Please get rid of inline keyword and let the compiler handle it.
> +{
> + return hba->mcq_sup && use_mcq_mode;
> +}
> +
> +static int param_set_mcq_mode(const char *val, const struct kernel_param *kp)
> +{
> + int ret;
> +
> + ret = param_set_bool(val, kp);
> + if (ret)
> + return ret;
> +
> + return 0;
> +}
> +
> +static const struct kernel_param_ops mcq_mode_ops = {
> + .set = param_set_mcq_mode,
> + .get = param_get_bool,
> +};
> +
> +module_param_cb(use_mcq_mode, &mcq_mode_ops, &use_mcq_mode, 0644);
> +MODULE_PARM_DESC(mcq_mode, "Control MCQ mode for UFSHCI 4.0 controllers");
Is it ok to mention only 4.0? What about future revisions?
Thanks,
Mani
> +
> #define ufshcd_toggle_vreg(_dev, _vreg, _on) \
> ({ \
> int _ret; \
> @@ -2258,6 +2285,10 @@ static inline int ufshcd_hba_capabilities(struct ufs_hba *hba)
> if (err)
> dev_err(hba->dev, "crypto setup failed\n");
>
> + hba->mcq_sup = FIELD_GET(MASK_MCQ_SUPPORT, hba->capabilities);
> + if (!hba->mcq_sup)
> + return err;
> +
> hba->mcq_capabilities = ufshcd_readl(hba, REG_MCQCAP);
> hba->ext_iid_sup = FIELD_GET(MASK_EXT_IID_SUPPORT,
> hba->mcq_capabilities);
> diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h
> index aec37cb9..70c0f9f 100644
> --- a/include/ufs/ufshcd.h
> +++ b/include/ufs/ufshcd.h
> @@ -832,6 +832,7 @@ struct ufs_hba_monitor {
> * @complete_put: whether or not to call ufshcd_rpm_put() from inside
> * ufshcd_resume_complete()
> * @ext_iid_sup: is EXT_IID is supported by UFSHC
> + * @mcq_sup: is mcq supported by UFSHC
> */
> struct ufs_hba {
> void __iomem *mmio_base;
> @@ -982,6 +983,7 @@ struct ufs_hba {
> u32 luns_avail;
> bool complete_put;
> bool ext_iid_sup;
> + bool mcq_sup;
> };
>
> /* Returns true if clocks can be gated. Otherwise false */
> --
> 2.7.4
>
--
மணிவண்ணன் சதாசிவம்
next prev parent reply other threads:[~2022-11-28 14:29 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <cover.1669176158.git.quic_asutoshd@quicinc.com>
2022-11-23 4:10 ` [PATCH v5 01/16] ufs: core: Optimize duplicate code to read extended feature Asutosh Das
2022-11-28 12:20 ` Manivannan Sadhasivam
2022-11-23 4:10 ` [PATCH v5 02/16] ufs: core: Probe for ext_iid support Asutosh Das
2022-11-28 12:53 ` Manivannan Sadhasivam
2022-11-23 4:10 ` [PATCH v5 03/16] ufs: core: Introduce Multi-circular queue capability Asutosh Das
2022-11-26 0:20 ` Bart Van Assche
2022-11-28 14:29 ` Manivannan Sadhasivam [this message]
2022-11-23 4:10 ` [PATCH v5 04/16] ufs: core: Defer adding host to scsi if mcq is supported Asutosh Das
2022-11-26 0:28 ` Bart Van Assche
2022-11-28 14:42 ` Manivannan Sadhasivam
2022-11-28 17:50 ` Asutosh Das
2022-11-23 4:10 ` [PATCH v5 05/16] ufs: core: mcq: Add Multi Circular Queue support Asutosh Das
2022-11-26 0:52 ` Bart Van Assche
2022-11-28 14:53 ` Manivannan Sadhasivam
2022-11-23 4:10 ` [PATCH v5 06/16] ufs: core: mcq: Configure resource regions Asutosh Das
2022-11-26 1:10 ` Bart Van Assche
2022-11-23 4:10 ` [PATCH v5 07/16] ufs: core: mcq: Calculate queue depth Asutosh Das
2022-11-26 1:14 ` Bart Van Assche
2022-11-28 15:15 ` Manivannan Sadhasivam
2022-11-28 19:54 ` Asutosh Das
2022-11-28 20:33 ` Bart Van Assche
2022-11-23 4:10 ` [PATCH v5 08/16] ufs: core: mcq: Allocate memory for mcq mode Asutosh Das
2022-11-26 1:20 ` Bart Van Assche
2022-11-28 15:48 ` Manivannan Sadhasivam
2022-11-23 4:10 ` [PATCH v5 09/16] ufs: core: mcq: Configure operation and runtime interface Asutosh Das
2022-11-26 1:28 ` Bart Van Assche
2022-11-28 22:08 ` Asutosh Das
2022-11-28 22:50 ` Bart Van Assche
2022-11-28 15:55 ` Manivannan Sadhasivam
2022-11-23 4:10 ` [PATCH v5 10/16] ufs: core: mcq: Use shared tags for MCQ mode Asutosh Das
2022-11-28 15:59 ` Manivannan Sadhasivam
2022-11-23 4:10 ` [PATCH v5 11/16] ufs: core: Prepare ufshcd_send_command for mcq Asutosh Das
2022-11-28 16:05 ` Manivannan Sadhasivam
2022-11-23 4:10 ` [PATCH v5 12/16] ufs: core: mcq: Find hardware queue to queue request Asutosh Das
2022-11-28 16:08 ` Manivannan Sadhasivam
2022-11-23 4:10 ` [PATCH v5 13/16] ufs: core: Prepare for completion in mcq Asutosh Das
2022-11-28 16:11 ` Manivannan Sadhasivam
2022-11-23 4:10 ` [PATCH v5 14/16] ufs: mcq: Add completion support of a cqe Asutosh Das
2022-11-28 17:00 ` Manivannan Sadhasivam
2022-11-28 17:47 ` Bart Van Assche
2022-11-23 4:10 ` [PATCH v5 15/16] ufs: core: mcq: Add completion support in poll Asutosh Das
2022-11-28 17:02 ` Manivannan Sadhasivam
2022-11-23 4:10 ` [PATCH v5 16/16] ufs: core: mcq: Enable Multi Circular Queue Asutosh Das
2022-11-28 17:03 ` Manivannan Sadhasivam
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