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 04/16] ufs: core: Defer adding host to scsi if mcq is supported
Date: Mon, 28 Nov 2022 20:12:22 +0530 [thread overview]
Message-ID: <20221128144222.GD62721@thinkpad> (raw)
In-Reply-To: <b75e35e1c23b428a6c55396c0fcda5ea22b4e33e.1669176158.git.quic_asutoshd@quicinc.com>
On Tue, Nov 22, 2022 at 08:10:17PM -0800, Asutosh Das wrote:
> If MCQ support is present, enabling it after MCQ support
> has been configured would require reallocating tags and memory.
> It would also free up the already allocated memory in
> Single Doorbell Mode. So defer invoking scsi_add_host() until
> MCQ is configured.
Why cannot we do it for non MCQ case as well?
Thanks,
Mani
>
> 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>
> ---
> drivers/ufs/core/ufshcd.c | 19 +++++++++++++++----
> 1 file changed, 15 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c
> index 08be8ad..42c49ce 100644
> --- a/drivers/ufs/core/ufshcd.c
> +++ b/drivers/ufs/core/ufshcd.c
> @@ -8208,6 +8208,7 @@ static int ufshcd_probe_hba(struct ufs_hba *hba, bool init_dev_params)
> int ret;
> unsigned long flags;
> ktime_t start = ktime_get();
> + struct Scsi_Host *host = hba->host;
>
> hba->ufshcd_state = UFSHCD_STATE_RESET;
>
> @@ -8242,6 +8243,14 @@ static int ufshcd_probe_hba(struct ufs_hba *hba, bool init_dev_params)
> ret = ufshcd_device_params_init(hba);
> if (ret)
> goto out;
> +
> + if (is_mcq_supported(hba)) {
> + ret = scsi_add_host(host, hba->dev);
> + if (ret) {
> + dev_err(hba->dev, "scsi_add_host failed\n");
> + goto out;
> + }
> + }
> }
>
> ufshcd_tune_unipro_params(hba);
> @@ -9838,10 +9847,12 @@ int ufshcd_init(struct ufs_hba *hba, void __iomem *mmio_base, unsigned int irq)
> hba->is_irq_enabled = true;
> }
>
> - err = scsi_add_host(host, hba->dev);
> - if (err) {
> - dev_err(hba->dev, "scsi_add_host failed\n");
> - goto out_disable;
> + if (!is_mcq_supported(hba)) {
> + err = scsi_add_host(host, hba->dev);
> + if (err) {
> + dev_err(hba->dev, "scsi_add_host failed\n");
> + goto out_disable;
> + }
> }
>
> hba->tmf_tag_set = (struct blk_mq_tag_set) {
> --
> 2.7.4
>
--
மணிவண்ணன் சதாசிவம்
next prev parent reply other threads:[~2022-11-28 14:43 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
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 [this message]
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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