linux-kernel - [PATCH v3 2/3] ufs: core: mcq: Add Event Specific Interrupt enable and config functions

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-Id: <1671073583-10065-3-git-send-email-quic_cang@quicinc.com>
Date:   Wed, 14 Dec 2022 19:06:21 -0800
From:   Can Guo <quic_cang@...cinc.com>
To:     quic_asutoshd@...cinc.com, bvanassche@....org, mani@...nel.org,
        stanley.chu@...iatek.com, adrian.hunter@...el.com,
        beanhuo@...ron.com, avri.altman@....com, junwoo80.lee@...sung.com,
        martin.petersen@...cle.com
Cc:     linux-scsi@...r.kernel.org, Can Guo <quic_cang@...cinc.com>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        Keoseong Park <keosung.park@...sung.com>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        Kiwoong Kim <kwmad.kim@...sung.com>,
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v3 2/3] ufs: core: mcq: Add Event Specific Interrupt enable and config functions

Add and export two functions to enable ESI and config ESI base addresses.
The calls to these exported functions will be added by the next patch in
this series.

Signed-off-by: Can Guo <quic_cang@...cinc.com>
Reviewed-by: Bart Van Assche <bvanassche@....org>
---
 drivers/ufs/core/ufs-mcq.c | 16 ++++++++++++++++
 include/ufs/ufshcd.h       |  6 ++++++
 include/ufs/ufshci.h       |  2 ++
 3 files changed, 24 insertions(+)

diff --git a/drivers/ufs/core/ufs-mcq.c b/drivers/ufs/core/ufs-mcq.c
index f99c912..c81e424 100644
--- a/drivers/ufs/core/ufs-mcq.c
+++ b/drivers/ufs/core/ufs-mcq.c
@@ -246,6 +246,7 @@ void ufshcd_mcq_write_cqis(struct ufs_hba *hba, u32 val, int i)
 {
 	writel(val, mcq_opr_base(hba, OPR_CQIS, i) + REG_CQIS);
 }
+EXPORT_SYMBOL_GPL(ufshcd_mcq_write_cqis);
 
 /*
  * Current MCQ specification doesn't provide a Task Tag or its equivalent in
@@ -293,6 +294,7 @@ unsigned long ufshcd_mcq_poll_cqe_nolock(struct ufs_hba *hba,
 
 	return completed_reqs;
 }
+EXPORT_SYMBOL_GPL(ufshcd_mcq_poll_cqe_nolock);
 
 unsigned long ufshcd_mcq_poll_cqe_lock(struct ufs_hba *hba,
 				       struct ufs_hw_queue *hwq)
@@ -370,6 +372,20 @@ void ufshcd_mcq_make_queues_operational(struct ufs_hba *hba)
 	}
 }
 
+void ufshcd_mcq_enable_esi(struct ufs_hba *hba)
+{
+	ufshcd_writel(hba, ufshcd_readl(hba, REG_UFS_MEM_CFG) | 0x2,
+		      REG_UFS_MEM_CFG);
+}
+EXPORT_SYMBOL_GPL(ufshcd_mcq_enable_esi);
+
+void ufshcd_mcq_config_esi(struct ufs_hba *hba, struct msi_msg *msg)
+{
+	ufshcd_writel(hba, msg->address_lo, REG_UFS_ESILBA);
+	ufshcd_writel(hba, msg->address_hi, REG_UFS_ESIUBA);
+}
+EXPORT_SYMBOL_GPL(ufshcd_mcq_config_esi);
+
 int ufshcd_mcq_init(struct ufs_hba *hba)
 {
 	struct Scsi_Host *host = hba->host;
diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h
index 7f0139b..660ccd3 100644
--- a/include/ufs/ufshcd.h
+++ b/include/ufs/ufshcd.h
@@ -16,6 +16,7 @@
 #include <linux/blk-crypto-profile.h>
 #include <linux/blk-mq.h>
 #include <linux/devfreq.h>
+#include <linux/msi.h>
 #include <linux/pm_runtime.h>
 #include <scsi/scsi_device.h>
 #include <ufs/unipro.h>
@@ -1201,6 +1202,11 @@ void ufshcd_parse_dev_ref_clk_freq(struct ufs_hba *hba, struct clk *refclk);
 void ufshcd_update_evt_hist(struct ufs_hba *hba, u32 id, u32 val);
 void ufshcd_hba_stop(struct ufs_hba *hba);
 void ufshcd_schedule_eh_work(struct ufs_hba *hba);
+void ufshcd_mcq_write_cqis(struct ufs_hba *hba, u32 val, int i);
+unsigned long ufshcd_mcq_poll_cqe_nolock(struct ufs_hba *hba,
+					 struct ufs_hw_queue *hwq);
+void ufshcd_mcq_enable_esi(struct ufs_hba *hba);
+void ufshcd_mcq_config_esi(struct ufs_hba *hba, struct msi_msg *msg);
 
 /**
  * ufshcd_set_variant - set variant specific data to the hba
diff --git a/include/ufs/ufshci.h b/include/ufs/ufshci.h
index 1df8425..9b74194 100644
--- a/include/ufs/ufshci.h
+++ b/include/ufs/ufshci.h
@@ -59,6 +59,8 @@ enum {
 
 	REG_UFS_MEM_CFG				= 0x300,
 	REG_UFS_MCQ_CFG				= 0x380,
+	REG_UFS_ESILBA				= 0x384,
+	REG_UFS_ESIUBA				= 0x388,
 	UFSHCI_CRYPTO_REG_SPACE_SIZE		= 0x400,
 };
 
-- 
2.7.4