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Wed, 2 Aug 2023 10:38:52 +0900 (KST) Received: from epsmtrp2.samsung.com (unknown [182.195.40.14]) by epcas2p2.samsung.com (KnoxPortal) with ESMTPA id 20230802013852epcas2p2334d33036d7d1a0bdbefaf5bb844928e~3bUXxWJJw0899308993epcas2p2p; Wed, 2 Aug 2023 01:38:52 +0000 (GMT) Received: from epsmgms1p2new.samsung.com (unknown [182.195.42.42]) by epsmtrp2.samsung.com (KnoxPortal) with ESMTP id 20230802013852epsmtrp2e05a35e0d4183772cb2d420996e2a11d~3bUXwe5-Y1331913319epsmtrp2H; Wed, 2 Aug 2023 01:38:52 +0000 (GMT) X-AuditID: b6c32a43-5f9ff7000000c342-df-64c9b3ac0181 Received: from epsmtip2.samsung.com ( [182.195.34.31]) by epsmgms1p2new.samsung.com (Symantec Messaging Gateway) with SMTP id E5.DD.30535.CA3B9C46; Wed, 2 Aug 2023 10:38:52 +0900 (KST) Received: from ubuntu.dsn.sec.samsung.com (unknown [10.229.95.128]) by epsmtip2.samsung.com (KnoxPortal) with ESMTPA id 20230802013852epsmtip22f4387cc888d17bc1d6714c205f46d6e~3bUXh3_Er0113401134epsmtip26; Wed, 2 Aug 2023 01:38:52 +0000 (GMT) From: Kiwoong Kim To: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, alim.akhtar@samsung.com, avri.altman@wdc.com, bvanassche@acm.org, jejb@linux.ibm.com, martin.petersen@oracle.com, beanhuo@micron.com, adrian.hunter@intel.com, sc.suh@samsung.com, hy50.seo@samsung.com, sh425.lee@samsung.com, kwangwon.min@samsung.com, junwoo80.lee@samsung.com, wkon.kim@samsung.com Cc: Kiwoong Kim Subject: [RESEND PATCH v3 2/2] ufs: poll HCS.UCRDY before issuing a UIC command Date: Wed, 2 Aug 2023 10:28:33 +0900 Message-Id: <9c7ccbfb8fe05c29ab3e31d9cd14e6b91065b8b0.1690939662.git.kwmad.kim@samsung.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: In-Reply-To: X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrEJsWRmVeSWpSXmKPExsWy7bCmqe6azSdTDI636lucfLKGzeLBvG1s Fi9/XmWzOPiwk8Vi2oefzBarFz9gsVh0YxuTxa6/zUwWW2/sZLG4ueUoi8XlXXPYLLqv72Cz WH78H5NF190bjBZL/71lsdh86RuLg4DH5SveHov3vGTymLDoAKPH9/UdbB4fn95i8ejbsorR 4/MmOY/2A91MARxR2TYZqYkpqUUKqXnJ+SmZeem2St7B8c7xpmYGhrqGlhbmSgp5ibmptkou PgG6bpk5QB8oKZQl5pQChQISi4uV9O1sivJLS1IVMvKLS2yVUgtScgrMC/SKE3OLS/PS9fJS S6wMDQyMTIEKE7Iz5h29w16wnqfi8Mlm5gbGuVxdjJwcEgImEt+Wv2TpYuTiEBLYwSgxa8cx ZgjnE6PEpcsLoJxvjBJHdr1hg2np2djMDmILCexllPi5RgOi6AejRP/2fSwgCTYBTYmnN6cy gSREBD4wSfxfvo0RJMEsoC6xa8IJJhBbWCBQ4tab42CTWARUJRZNeAlWwysQLXHg7GkmiG1y EjfPdTKD2JwClhIXeraxoLK5gGoWckhc7j3CDNHgInHn5j4oW1ji1fEt7BC2lMTnd3uBXuAA srMl9iwUgwhXSCye9pYFwjaWmPWsnRGkhBnogfW79CGqlSWO3GKBuJ5PouPwX3aIMK9ER5sQ RKOyxK9JkxkhbEmJmTfvQO30kDi18gITJHh6GCUmr7vBOoFRfhbCggWMjKsYxVILinPTU5ON CgzhkZecn7uJEZxYtZx3MF6Z/0/vECMTB+MhRgkOZiURXunfx1OEeFMSK6tSi/Lji0pzUosP MZoCg3Eis5Rocj4wteeVxBuaWBqYmJkZmhuZGpgrifPea52bIiSQnliSmp2aWpBaBNPHxMEp 1cC0xywwdM/PZ5r25hyr2p2PVvjIhczxPb241z2ANfyIs+S5U0dvNqh2bNVfcIs96sN3fV6P 8kN6fJ82m8Ztjd+oLt76qSNetuuiQNhz+6Y01kPWehd5t114/W5Cy9J1Z0u5XzmFbBcO3pnW c45n30ObwH6OeBtek5AMc4eX7rzxl6/+nPvFbeGX55U/5obZJ+f6NxU/WHzo1tXL/N0HXq/9 Z6235t2+YyWet0/uXFGcc1pzav2viEPr96ZsmTvpfI6vdsY+yy1P5JinvNKM8z8WVKWV/LJR 512D+Vfeuz8cy96urf7/wqV50kzHCGfjwn9nJlzvOf9H7YrizpW/7wSrpIksWXTwtIrCxwWL GvjslViKMxINtZiLihMBUsavtTUEAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrNLMWRmVeSWpSXmKPExsWy7bCSvO6azSdTDPac4rA4+WQNm8WDedvY LF7+vMpmcfBhJ4vFtA8/mS1WL37AYrHoxjYmi11/m5kstt7YyWJxc8tRFovLu+awWXRf38Fm sfz4PyaLrrs3GC2W/nvLYrH50jcWBwGPy1e8PRbvecnkMWHRAUaP7+s72Dw+Pr3F4tG3ZRWj x+dNch7tB7qZAjiiuGxSUnMyy1KL9O0SuDLmHb3DXrCep+LwyWbmBsa5XF2MnBwSAiYSPRub 2bsYuTiEBHYzSvzatYkJIiEpcWLnc0YIW1jifssRVoiib4wSq7beZQVJsAloSjy9OZUJJCEi 0MQscWn2dBaQBLOAusSuCSfAJgkL+Euc2N0GFmcRUJVYNOEl2FRegWiJA2dPQ22Tk7h5rpMZ xOYUsJS40LMNrF5IwELi/OYt7LjEJzAKLGBkWMUomVpQnJueW2xYYJSXWq5XnJhbXJqXrpec n7uJERwfWlo7GPes+qB3iJGJg/EQowQHs5IIr/Tv4ylCvCmJlVWpRfnxRaU5qcWHGKU5WJTE eb+97k0REkhPLEnNTk0tSC2CyTJxcEo1MGlGTHne5Xqm99ykyHcvy/PE/v6c8sPZaOme7e7S sj0WfrWpm14uelOsPGmBmopDp0Hz2zKzR53Kizj6GLSi1hzx+lK3JKux+OPRV0kzGqYJRly+ bVnJv2abTsObpCOmn6u2urYqdZpHshxcYLgjqL+1yfwC9wVm/YC9042sfTfvmLs+XVnw66/5 zR+/1i7f9/PiG7P3L0R3lmXvibc8yRn+JSKrKrpkTrqh3eZDmWYm30+tl0zzibF7qs5/zPPe TAdl/2NpB5gXLHhZPtXNsbl82cnd//uYPz3e0+nqEf76VtyqPdW77jMrpsvdqtL2/KyTdiOU KcErSC3lJKvcme3Z4geOHA1ZoOl63SVohxJLcUaioRZzUXEiAAILymf+AgAA X-CMS-MailID: 20230802013852epcas2p2334d33036d7d1a0bdbefaf5bb844928e X-Msg-Generator: CA X-Sendblock-Type: AUTO_CONFIDENTIAL CMS-TYPE: 102P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20230802013852epcas2p2334d33036d7d1a0bdbefaf5bb844928e References: Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org With auto hibern8 enabled, UIC could be working for a while to process a hibern8 operation and HCI reports UIC not ready for a short term through HCS.UCRDY. And UFS driver can't recognize the operation. UFSHCI spec specifies UCRDY like this: whether the host controller is ready to process UIC COMMAND The 'ready' could be seen as many different meanings. If the meaning includes not processing any request from HCI, processing a hibern8 operation can be 'not ready'. In this situation, the driver needs to wait until the operations is completed. Signed-off-by: Kiwoong Kim Reviewed-by: Adrian Hunter --- drivers/ufs/core/ufshcd.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index a89d39a..10ccc85 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -22,6 +22,7 @@ #include #include #include +#include #include #include #include @@ -2365,7 +2366,11 @@ static inline int ufshcd_hba_capabilities(struct ufs_hba *hba) */ static inline bool ufshcd_ready_for_uic_cmd(struct ufs_hba *hba) { - return ufshcd_readl(hba, REG_CONTROLLER_STATUS) & UIC_COMMAND_READY; + u32 val; + int ret = read_poll_timeout(ufshcd_readl, val, val & UIC_COMMAND_READY, + 500, UIC_CMD_TIMEOUT * 1000, false, hba, + REG_CONTROLLER_STATUS); + return ret == 0 ? true : false; } /**