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Bottomley" , "open list" Subject: [PATCH v3 03/17] ufs: core: Introduce Multi-circular queue capability Date: Thu, 20 Oct 2022 11:03:32 -0700 Message-ID: <1718196085461c37138c194c49146efa5c5503dc.1666288432.git.quic_asutoshd@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: References: MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nasanex01a.na.qualcomm.com (10.52.223.231) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: 0POcqdq33VyLsn9Biasy7DYf6Vz9ZUgF X-Proofpoint-ORIG-GUID: 0POcqdq33VyLsn9Biasy7DYf6Vz9ZUgF X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2022-10-20_09,2022-10-20_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 malwarescore=0 spamscore=0 lowpriorityscore=0 priorityscore=1501 mlxlogscore=999 impostorscore=0 bulkscore=0 clxscore=1015 mlxscore=0 adultscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2209130000 definitions=main-2210200108 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Add support to check for MCQ capability in the UFSHC. This capability can be used by host drivers to control MCQ enablement. Co-developed-by: Can Guo Signed-off-by: Can Guo Signed-off-by: Asutosh Das --- drivers/ufs/core/ufshcd.c | 4 ++++ include/ufs/ufshcd.h | 13 +++++++++++++ 2 files changed, 17 insertions(+) diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index e2be3f4..8d93797 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -2250,6 +2250,10 @@ 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 c29f4c8..e779bc6 100644 --- a/include/ufs/ufshcd.h +++ b/include/ufs/ufshcd.h @@ -660,6 +660,12 @@ enum ufshcd_caps { * notification if it is supported by the UFS device. */ UFSHCD_CAP_TEMP_NOTIF = 1 << 11, + + /* + * This capability allows the host controller driver to turn on/off + * MCQ mode. MCQ mode may be used to increase performance. + */ + UFSHCD_CAP_MCQ_EN = 1 << 12, }; struct ufs_hba_variant_params { @@ -820,6 +826,7 @@ 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; @@ -969,8 +976,14 @@ struct ufs_hba { u32 luns_avail; bool complete_put; bool ext_iid_sup; + bool mcq_sup; }; +static inline bool is_mcq_supported(struct ufs_hba *hba) +{ + return hba->mcq_sup && (hba->caps & UFSHCD_CAP_MCQ_EN); +} + /* Returns true if clocks can be gated. Otherwise false */ static inline bool ufshcd_is_clkgating_allowed(struct ufs_hba *hba) {