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Wed, 26 Feb 2025 14:04:27 -0800 (PST) From: Peter Griffin To: alim.akhtar@samsung.com, James.Bottomley@HansenPartnership.com, martin.petersen@oracle.com, krzk@kernel.org Cc: linux-scsi@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, willmcvicker@google.com, tudor.ambarus@linaro.org, andre.draszik@linaro.org, ebiggers@kernel.org, bvanassche@acm.org, kernel-team@android.com, Peter Griffin Subject: [PATCH 4/6] scsi: ufs: exynos: Enable PRDT pre-fetching with UFSHCD_CAP_CRYPTO Date: Wed, 26 Feb 2025 22:04:12 +0000 Message-ID: <20250226220414.343659-5-peter.griffin@linaro.org> X-Mailer: git-send-email 2.48.1.658.g4767266eb4-goog In-Reply-To: <20250226220414.343659-1-peter.griffin@linaro.org> References: <20250226220414.343659-1-peter.griffin@linaro.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" PRDT_PREFETCH_ENABLE[31] bit should be set when desctype field of fmpsecurity0 register is type2 (double file encryption) or type3 (file and disk excryption). Setting this bit enables PRDT pre-fetching on both TXPRDT and RXPRDT. Signed-off-by: Peter Griffin --- drivers/ufs/host/ufs-exynos.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/ufs/host/ufs-exynos.c b/drivers/ufs/host/ufs-exynos.c index 943cea569f66..27eb360458a7 100644 --- a/drivers/ufs/host/ufs-exynos.c +++ b/drivers/ufs/host/ufs-exynos.c @@ -1098,12 +1098,17 @@ static int exynos_ufs_post_link(struct ufs_hba *hba) struct exynos_ufs *ufs =3D ufshcd_get_variant(hba); struct phy *generic_phy =3D ufs->phy; struct exynos_ufs_uic_attr *attr =3D ufs->drv_data->uic_attr; + u32 val =3D ilog2(DATA_UNIT_SIZE); =20 exynos_ufs_establish_connt(ufs); exynos_ufs_fit_aggr_timeout(ufs); =20 hci_writel(ufs, 0xa, HCI_DATA_REORDER); - hci_writel(ufs, ilog2(DATA_UNIT_SIZE), HCI_TXPRDT_ENTRY_SIZE); + + if (hba->caps & UFSHCD_CAP_CRYPTO) + val |=3D PRDT_PREFECT_EN; + hci_writel(ufs, val, HCI_TXPRDT_ENTRY_SIZE); + hci_writel(ufs, ilog2(DATA_UNIT_SIZE), HCI_RXPRDT_ENTRY_SIZE); hci_writel(ufs, (1 << hba->nutrs) - 1, HCI_UTRL_NEXUS_TYPE); hci_writel(ufs, (1 << hba->nutmrs) - 1, HCI_UTMRL_NEXUS_TYPE); --=20 2.48.1.658.g4767266eb4-goog