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Thu, 14 May 2020 00:52:58 +0000 (GMT) From: Alim Akhtar To: robh@kernel.org Subject: [PATCH v9 04/10] scsi: ufs: introduce UFSHCD_QUIRK_PRDT_BYTE_GRAN quirk Date: Thu, 14 May 2020 06:09:08 +0530 Message-Id: <20200514003914.26052-5-alim.akhtar@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200514003914.26052-1-alim.akhtar@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFmpmleLIzCtJLcpLzFFi42LZdlhTXTd32p44g+5nghYP5m1js3j58yqb xaf1y1gt5h85x2px/vwGdoubW46yWGx6fI3V4vKuOWwWM87vY7Lovr6DzWL58X9MFv/37GC3 WLr1JqMDr8flvl4mj02rOtk8Ni+p92g5uZ/F4+PTWywefVtWMXp83iTn0X6gmymAI4rLJiU1 J7MstUjfLoEr4+OfbcwF20UrZrRcZW9gvCvYxcjJISFgIrHz3FG2LkYuDiGB3YwS764cY4dw PjFKfD7ezwxSJSTwjVHixicmmI7F576zQhTtZZS49ewLI4TTwiQx/chMVpAqNgFtibvTt4B1 iAgISxz51sYIYjML3GCSeLDSBcQWFgiSaNrWzQJiswioSszdshhsG6+AjcTT+efYIbbJS6ze cAAszilgK7HlyzGwzRICnRwS677fhypykZi84RYLhC0s8er4Fqi4lMTL/jYgmwPIzpbo2WUM Ea6RWDrvGFS5vcSBK3NYQEqYBTQl1u/ShziTT6L39xMmiE5eiY42IYhqVYnmd1ehOqUlJnZ3 s0LYHhKnj65kgQTDBEaJ3R/uM05glJ2FMHUBI+MqRsnUguLc9NRi0wLDvNRyveLE3OLSvHS9 5PzcTYzgdKLluYPx7oMPeocYmTgYDzFKcDArifD6rd8dJ8SbklhZlVqUH19UmpNafIhRmoNF SZz3dNqWOCGB9MSS1OzU1ILUIpgsEwenVANTzK/1ga5H+v/yP4u+Xr06k3Nh/qzo2hctQTpT 6kJ2a/wzL8uUWMrHYlfR7Gpvef/31DmJGXOvVMnKtZ1uD8huXfb1cZ92dcbuCrnPoqLdshoN 04XF/blkH9csVPNwbJ3YILn/lrfUFiaDPKOiWB9lztz7/Y/azht67bH+F8JhtEzm3PeLq8sU b2v/84jNMz+oU3rQhjc+7uwjLYs266nRvncn+DbH+7pyK84ItTy72vVonP+dLI9zphtFPxnb 6G+3W3Nx/qJvAvxVj/9G+n7Oydhy4vI7t4cJK1cf2/UxTiR0y1ShlwlNC299MBE492pj9SMm uaLnCnu48y7flVgjxRJSvGBHlJ3wktMnFiuxFGckGmoxFxUnAgAKIhw5lgMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrMLMWRmVeSWpSXmKPExsWy7bCSvG7OtD1xBiumSFg8mLeNzeLlz6ts Fp/WL2O1mH/kHKvF+fMb2C1ubjnKYrHp8TVWi8u75rBZzDi/j8mi+/oONovlx/8xWfzfs4Pd YunWm4wOvB6X+3qZPDat6mTz2Lyk3qPl5H4Wj49Pb7F49G1ZxejxeZOcR/uBbqYAjigum5TU nMyy1CJ9uwSujI9/tjEXbBetmNFylb2B8a5gFyMnh4SAicTic99Zuxi5OIQEdjNKXLtwghUi IS1xfeMEdghbWGLlv+fsEEVNTBKX3j1hA0mwCWhL3J2+hQnEFgEqOvKtjRHEZhZ4xiRx6mEp iC0sECDxfe8isDiLgKrE3C2LmUFsXgEbiafzz0EtkJdYveEAWJxTwFZiy5djYEcIAdUsW7OM cQIj3wJGhlWMkqkFxbnpucWGBYZ5qeV6xYm5xaV56XrJ+bmbGMHhrKW5g3H7qg96hxiZOBgP MUpwMCuJ8Pqt3x0nxJuSWFmVWpQfX1Sak1p8iFGag0VJnPdG4cI4IYH0xJLU7NTUgtQimCwT B6dUA5Of/J0bJQk5Ez7p7cs5846tb+Hl1todZw+dSf+yl+mjiwJztfWBPYvs2qLjGhRMdv3a vtiv1OH8p40RoWL1U4Qm32o6NNuwyF5urm51R0Gh7USxDUvcv56IEY9WnmUn25KhV9J47cmB f0+6FoV8etqfI3L0GY/0nYaskL8tJk8kt+hz6W7ZfTHX8M+TZYHvLux62nPlab61vceTDxfy dqxa8komd4NTTGhFgU1J+on4OQXbdr27mqhz656E37VNUvb3zr62k/24zn3nBJ595dN6RPry /7yRzpN6fiC2Wi/lx/bXt7jz+DPvdiXcM83fxvniyDyboxZtOcKyLM80Xqi5V6T7Lp8te8LX J32Fu4QSS3FGoqEWc1FxIgAijn9D1gIAAA== X-CMS-MailID: 20200514005300epcas5p4ce7ba7fe62567e7ba0066c96473853b2 X-Msg-Generator: CA CMS-TYPE: 105P X-CMS-RootMailID: 20200514005300epcas5p4ce7ba7fe62567e7ba0066c96473853b2 References: <20200514003914.26052-1-alim.akhtar@samsung.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200513_175316_777449_334CC53F X-CRM114-Status: GOOD ( 18.32 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-scsi@vger.kernel.org, martin.petersen@oracle.com, linux-kernel@vger.kernel.org, krzk@kernel.org, kwmad.kim@samsung.com, avri.altman@wdc.com, cang@codeaurora.org, Alim Akhtar , stanley.chu@mediatek.com, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Some UFS host controllers like Exynos uses granularities of PRDT length and offset as bytes, whereas others uses actual segment count. Reviewed-by: Avri Altman Signed-off-by: Kiwoong Kim Signed-off-by: Alim Akhtar --- drivers/scsi/ufs/ufshcd.c | 30 +++++++++++++++++++++++------- drivers/scsi/ufs/ufshcd.h | 6 ++++++ 2 files changed, 29 insertions(+), 7 deletions(-) diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index ee30ed6cc805..ba093d0d0942 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -2151,8 +2151,14 @@ static int ufshcd_map_sg(struct ufs_hba *hba, struct ufshcd_lrb *lrbp) return sg_segments; if (sg_segments) { - lrbp->utr_descriptor_ptr->prd_table_length = - cpu_to_le16((u16)sg_segments); + + if (hba->quirks & UFSHCD_QUIRK_PRDT_BYTE_GRAN) + lrbp->utr_descriptor_ptr->prd_table_length = + cpu_to_le16((sg_segments * + sizeof(struct ufshcd_sg_entry))); + else + lrbp->utr_descriptor_ptr->prd_table_length = + cpu_to_le16((u16) (sg_segments)); prd_table = (struct ufshcd_sg_entry *)lrbp->ucd_prdt_ptr; @@ -3500,11 +3506,21 @@ static void ufshcd_host_memory_configure(struct ufs_hba *hba) cpu_to_le32(upper_32_bits(cmd_desc_element_addr)); /* Response upiu and prdt offset should be in double words */ - utrdlp[i].response_upiu_offset = - cpu_to_le16(response_offset >> 2); - utrdlp[i].prd_table_offset = cpu_to_le16(prdt_offset >> 2); - utrdlp[i].response_upiu_length = - cpu_to_le16(ALIGNED_UPIU_SIZE >> 2); + if (hba->quirks & UFSHCD_QUIRK_PRDT_BYTE_GRAN) { + utrdlp[i].response_upiu_offset = + cpu_to_le16(response_offset); + utrdlp[i].prd_table_offset = + cpu_to_le16(prdt_offset); + utrdlp[i].response_upiu_length = + cpu_to_le16(ALIGNED_UPIU_SIZE); + } else { + utrdlp[i].response_upiu_offset = + cpu_to_le16(response_offset >> 2); + utrdlp[i].prd_table_offset = + cpu_to_le16(prdt_offset >> 2); + utrdlp[i].response_upiu_length = + cpu_to_le16(ALIGNED_UPIU_SIZE >> 2); + } ufshcd_init_lrb(hba, &hba->lrb[i], i); } diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index f8d08cb9caf7..a9b9ace9fc72 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -535,6 +535,12 @@ enum ufshcd_quirks { * enabled via HCE register. */ UFSHCI_QUIRK_BROKEN_HCE = 1 << 8, + + /* + * This quirk needs to be enabled if the host controller regards + * resolution of the values of PRDTO and PRDTL in UTRD as byte. + */ + UFSHCD_QUIRK_PRDT_BYTE_GRAN = 1 << 9, }; enum ufshcd_caps { -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel