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Tue, 11 Mar 2025 02:25:46 -0700 (PDT) Received: from [127.0.1.1] ([2a01:cb1d:dc:7e00:5946:3143:114d:3f3]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-43cea8076fcsm107436465e9.15.2025.03.11.02.25.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 11 Mar 2025 02:25:46 -0700 (PDT) From: Bartosz Golaszewski Date: Tue, 11 Mar 2025 10:25:34 +0100 Subject: [PATCH v7 3/8] dmaengine: qcom: bam_dma: add bam_pipe_lock flag support Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250311-qce-cmd-descr-v7-3-db613f5d9c9f@linaro.org> References: <20250311-qce-cmd-descr-v7-0-db613f5d9c9f@linaro.org> In-Reply-To: <20250311-qce-cmd-descr-v7-0-db613f5d9c9f@linaro.org> To: Thara Gopinath , Herbert Xu , "David S. Miller" , Vinod Koul , Jonathan Corbet , Md Sadre Alam , Srinivas Kandagatla Cc: linux-crypto@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org, linux-doc@vger.kernel.org, Bartosz Golaszewski X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=openpgp-sha256; l=2188; i=bartosz.golaszewski@linaro.org; h=from:subject:message-id; bh=q/3RP4DiTyaxTRnIH/tALxp3dBkxS3/vcvd9GKBezPM=; b=owEBbQKS/ZANAwAKARGnLqAUcddyAcsmYgBn0AGVUBvjeQRh7H7aAx1rE8T2VzvFTVozUiuqz vf1B0ns0RSJAjMEAAEKAB0WIQQWnetsC8PEYBPSx58Rpy6gFHHXcgUCZ9ABlQAKCRARpy6gFHHX cjelEACN3/JUgds8V7OXUaqnsGAgQkUwmon/d9kX8vT1YYVYYguRoqUrSTNeC9njYmcKrucjs5K k2k1oWasiHuafyOeEVIAqLtsXUL6sYz2cSKDl3j4dnfK1HSRE9Uh/ESR3JawYqwT4JI/cZXI6A/ JOPdtRb2ik4iGtUSxn3Uz4rEGv7zfeCKzfUTl+VimkvHv8coNAghD9bI5NsaN3Xo59kB4KesWQb j75ftmhE7WcPw6L6k0H0Y5C394+rKmt4xoFpDczUY/Lbqxbqh9tM3zjFV8H8XNqkE4OWujEkwG6 flbnLqZNiwDxXZg6bRFG24STnKsv/TsTlc54mnt3w9N2nurVJCEI0I6HoWgrv1bNaeySWOb6GS0 hdsCEU9sdYkts4FjT38yi81tbluPpvbOkfn6XOTaynYBMbqoKG0CB8TSjmM5yT58vXEDHqWME1/ r6KKVRQT+1ySkn/cXyBHRT7U3iE3jbWhjp63WTx9zGNmKVuyr1m1jXJRIa6iOHOrqmKDa4sZivJ szseRtVCJsUJ7iUeQSa5RcgQ6rtLTx0MXlxpdjTBuTUmrXvWlo3Qf5rQC/T+oyAUqiZ2+GFPPcT FH5+7j4YRP29sYKuIE0FRl+7zF4fPmhTHyohLVoDmGrF6jrQUPh5arOPMJv7tADVTNJDiX9gFPf tSS4tBeYqPZmF/Q== X-Developer-Key: i=bartosz.golaszewski@linaro.org; a=openpgp; fpr=169DEB6C0BC3C46013D2C79F11A72EA01471D772 From: Bartosz Golaszewski Extend the device match data with a flag indicating whether the IP supports the BAM lock/unlock feature. Set it to true on BAM IP versions 1.4.0 and above. Co-developed-by: Md Sadre Alam Signed-off-by: Md Sadre Alam Signed-off-by: Bartosz Golaszewski --- drivers/dma/qcom/bam_dma.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/drivers/dma/qcom/bam_dma.c b/drivers/dma/qcom/bam_dma.c index 8861245314b1..737fce396c2e 100644 --- a/drivers/dma/qcom/bam_dma.c +++ b/drivers/dma/qcom/bam_dma.c @@ -58,6 +58,8 @@ struct bam_desc_hw { #define DESC_FLAG_EOB BIT(13) #define DESC_FLAG_NWD BIT(12) #define DESC_FLAG_CMD BIT(11) +#define DESC_FLAG_LOCK BIT(10) +#define DESC_FLAG_UNLOCK BIT(9) struct bam_async_desc { struct virt_dma_desc vd; @@ -113,6 +115,7 @@ struct reg_offset_data { struct bam_device_data { const struct reg_offset_data *reg_info; + bool bam_pipe_lock; }; static const struct reg_offset_data bam_v1_3_reg_info[] = { @@ -179,6 +182,7 @@ static const struct reg_offset_data bam_v1_4_reg_info[] = { static const struct bam_device_data bam_v1_4_data = { .reg_info = bam_v1_4_reg_info, + .bam_pipe_lock = true, }; static const struct reg_offset_data bam_v1_7_reg_info[] = { @@ -212,6 +216,7 @@ static const struct reg_offset_data bam_v1_7_reg_info[] = { static const struct bam_device_data bam_v1_7_data = { .reg_info = bam_v1_7_reg_info, + .bam_pipe_lock = true, }; /* BAM CTRL */ @@ -707,8 +712,15 @@ static struct dma_async_tx_descriptor *bam_prep_slave_sg(struct dma_chan *chan, unsigned int curr_offset = 0; do { - if (flags & DMA_PREP_CMD) + if (flags & DMA_PREP_CMD) { desc->flags |= cpu_to_le16(DESC_FLAG_CMD); + if (bdev->dev_data->bam_pipe_lock) { + if (flags & DMA_PREP_LOCK) + desc->flags |= cpu_to_le16(DESC_FLAG_LOCK); + else if (flags & DMA_PREP_UNLOCK) + desc->flags |= cpu_to_le16(DESC_FLAG_UNLOCK); + } + } desc->addr = cpu_to_le32(sg_dma_address(sg) + curr_offset);