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Miller" , Udit Tiwari , Daniel Perez-Zoghbi , Md Sadre Alam , Dmitry Baryshkov , Peter Ujfalusi , Michal Simek Cc: dmaengine@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-crypto@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Bartosz Golaszewski , Bartosz Golaszewski X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=4424; i=bartosz.golaszewski@oss.qualcomm.com; h=from:subject:message-id; bh=RSOjSpLnp8hi/ybwzozpW3l6rKGzZUMhQm0FWWcI8KA=; b=owEBbQKS/ZANAwAKAQWdLsv/NoTDAcsmYgBpRSQWPM7l/1lxH1CHPiAiUivnAjDvIqDU2EKcd 9WfR0ByfmyJAjMEAAEKAB0WIQSR5RMt5bVGHXuiZfwFnS7L/zaEwwUCaUUkFgAKCRAFnS7L/zaE w7tBD/93y0Vezj07ev44/k1PnOo5R6g+0U3UsZXM3EyOhGQ6tKFjY8j9VB2pGGYBnj6889zxNzA ZJyXzIrrPNrHBSFoXOw2sXRhngdqFnKWAVhv6ZDfIV9mnMKAZ0fHAAqa2jVoHtfCodf22IEB3at QrNhIgtk7J70l5uPLN4cEpCqYEerjH2VBGzCIFq1y+jsJHIAQi9lUaJDf/7Znntk6v0sKRK8KF8 r6pQUwNji1+xCr5HZW214hMkzi39bMW+ZxILe0Elksoq6DKxvPNjA4n0wovcld++EojDdCQPJos i/eT7it5Pm1fgy0kB7WqMo/zTAedD22Ul5vbDTZr9XNbUuxW0ahd2UGEZlB09QYngJN5JqJpZF8 Ya+djp9ZSSQsJ8MzvrA8UycCb2gVvPAzUGYZYXHNsDB+7nk1fNI+LBFdwqrtioPuJHmS1cC/t77 KmCw1nlpLP9dNS2ok64KVZQYnGWOX74iO129aN/mQPz39zk373B/938cKXXOIpzdqZlb49RSL7j yk18DjlzMtK2oZ2favstKMmsobPCZ8pndKnoKfvX5fGbNhKXUmdK7J93o1w4dbiktbdAAYFTk3F uG42EiO/AcPi7p7BYd09al3gutN/dyDmEjgcpQkI6zlFVkIUp0o0EOqmt4Z3+ybWSPsc1uZEqq2 2Pq3PS9sgsIhWuA== X-Developer-Key: i=bartosz.golaszewski@oss.qualcomm.com; a=openpgp; fpr=169DEB6C0BC3C46013D2C79F11A72EA01471D772 X-Authority-Analysis: v=2.4 cv=AcG83nXG c=1 sm=1 tr=0 ts=6945242b cx=c_pps a=mPf7EqFMSY9/WdsSgAYMbA==:117 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=wP3pNCr1ah4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=KKAkSRfTAAAA:8 a=EUspDBNiAAAA:8 a=E80RO7-gMyMBa8V4svAA:9 a=QEXdDO2ut3YA:10 a=dawVfQjAaf238kedN5IG:22 a=cvBusfyB2V15izCimMoJ:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMjE5MDA4MyBTYWx0ZWRfX/iWkFmofbVuS eclddMLw//hVelNOF3n3uBqspht0DoelSUEWE7e2G2UC6GuuTKTLHZtF9QThx0RndF5GIQkFxRf lWVa7MqcMI4Ji4AmIM0MraQdWmLUWHrZuu0MS5esONcAykYTXdtzfOZlTUyCfd+YUF4y7vL+dZv 9CdNtOkSFwZ7r77hgL8CcC2a+LANF8ejXgTfICfHJZwqrQZrYuV22kv3UKUPXmLC8VGYljnJqeC iqq7U7XQyhNCBcNw66YIWBY9nG2lrp49OoCQD9rDYWdg5VJdYZsDePKqZW/QqMVwGNm7kUPWb+N gPDRk8jqbmUChKEq0jBRH76IC6gcw6yiE+GOqFunMlBKB+qJiTIwS97AMEy1gkeQUauogAEIfi2 zmfF2RxKFc20/+h7VyS1FstPfcq+DezdiPaiogj+AudpHd/gzc5B4VxLJ8cC0tjTlcdDxcnAmrV jgVIR1SutDscLWuZhWA== X-Proofpoint-GUID: C2u-qwtJ2e96VtAeWI3d6JRqy-GgJgmy X-Proofpoint-ORIG-GUID: C2u-qwtJ2e96VtAeWI3d6JRqy-GgJgmy X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2025-12-19_03,2025-12-17_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 spamscore=0 impostorscore=0 lowpriorityscore=0 clxscore=1015 priorityscore=1501 adultscore=0 phishscore=0 bulkscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2512120000 definitions=main-2512190083 From: Bartosz Golaszewski Implement the infrastructure for using the new DMA controller lock/unlock feature of the BAM driver. No functional change for now. Signed-off-by: Bartosz Golaszewski Signed-off-by: Bartosz Golaszewski --- drivers/crypto/qce/common.c | 18 ++++++++++++++++++ drivers/crypto/qce/dma.c | 39 ++++++++++++++++++++++++++++++++++----- drivers/crypto/qce/dma.h | 4 ++++ 3 files changed, 56 insertions(+), 5 deletions(-) diff --git a/drivers/crypto/qce/common.c b/drivers/crypto/qce/common.c index 04253a8d33409a2a51db527435d09ae85a7880af..292fb3c7bbd3d6f096bbdc3c66d= 37d11e9ea109a 100644 --- a/drivers/crypto/qce/common.c +++ b/drivers/crypto/qce/common.c @@ -593,3 +593,21 @@ void qce_get_version(struct qce_device *qce, u32 *majo= r, u32 *minor, u32 *step) *minor =3D (val & CORE_MINOR_REV_MASK) >> CORE_MINOR_REV_SHIFT; *step =3D (val & CORE_STEP_REV_MASK) >> CORE_STEP_REV_SHIFT; } + +int qce_bam_lock(struct qce_device *qce) +{ + qce_clear_bam_transaction(qce); + /* Dummy write to acquire the lock on the BAM pipe. */ + qce_write(qce, REG_VERSION, 0); + + return qce_submit_cmd_desc_lock(qce); +} + +int qce_bam_unlock(struct qce_device *qce) +{ + qce_clear_bam_transaction(qce); + /* Dummy write to release the lock on the BAM pipe. */ + qce_write(qce, REG_VERSION, 0); + + return qce_submit_cmd_desc_unlock(qce); +} diff --git a/drivers/crypto/qce/dma.c b/drivers/crypto/qce/dma.c index ba7a52fd4c6349d59c075c346f75741defeb6034..885053955ac3dc95efefef54190= 7f57844b60a3d 100644 --- a/drivers/crypto/qce/dma.c +++ b/drivers/crypto/qce/dma.c @@ -41,7 +41,7 @@ void qce_clear_bam_transaction(struct qce_device *qce) bam_txn->pre_bam_ce_idx =3D 0; } =20 -int qce_submit_cmd_desc(struct qce_device *qce) +static int qce_do_submit_cmd_desc(struct qce_device *qce, struct bam_desc_= metadata *meta) { struct qce_desc_info *qce_desc =3D qce->dma.bam_txn->desc; struct qce_bam_transaction *bam_txn =3D qce->dma.bam_txn; @@ -50,7 +50,7 @@ int qce_submit_cmd_desc(struct qce_device *qce) unsigned long attrs =3D DMA_PREP_CMD; dma_cookie_t cookie; unsigned int mapped; - int ret; + int ret =3D -ENOMEM; =20 mapped =3D dma_map_sg_attrs(qce->dev, bam_txn->wr_sgl, bam_txn->wr_sgl_cn= t, DMA_TO_DEVICE, attrs); @@ -59,9 +59,15 @@ int qce_submit_cmd_desc(struct qce_device *qce) =20 dma_desc =3D dmaengine_prep_slave_sg(chan, bam_txn->wr_sgl, bam_txn->wr_s= gl_cnt, DMA_MEM_TO_DEV, attrs); - if (!dma_desc) { - dma_unmap_sg(qce->dev, bam_txn->wr_sgl, bam_txn->wr_sgl_cnt, DMA_TO_DEVI= CE); - return -ENOMEM; + if (!dma_desc) + goto err_out; + + if (meta) { + meta->chan =3D chan; + + ret =3D dmaengine_desc_attach_metadata(dma_desc, meta, 0); + if (ret) + goto err_out; } =20 qce_desc->dma_desc =3D dma_desc; @@ -74,6 +80,29 @@ int qce_submit_cmd_desc(struct qce_device *qce) qce_dma_issue_pending(&qce->dma); =20 return 0; + +err_out: + dma_unmap_sg(qce->dev, bam_txn->wr_sgl, bam_txn->wr_sgl_cnt, DMA_TO_DEVIC= E); + return ret; +} + +int qce_submit_cmd_desc(struct qce_device *qce) +{ + return qce_do_submit_cmd_desc(qce, NULL); +} + +int qce_submit_cmd_desc_lock(struct qce_device *qce) +{ + struct bam_desc_metadata meta =3D { .op =3D BAM_META_CMD_LOCK, }; + + return qce_do_submit_cmd_desc(qce, &meta); +} + +int qce_submit_cmd_desc_unlock(struct qce_device *qce) +{ + struct bam_desc_metadata meta =3D { .op =3D BAM_META_CMD_UNLOCK }; + + return qce_do_submit_cmd_desc(qce, &meta); } =20 static void qce_prep_dma_cmd_desc(struct qce_device *qce, struct qce_dma_d= ata *dma, diff --git a/drivers/crypto/qce/dma.h b/drivers/crypto/qce/dma.h index f05dfa9e6b25bd60e32f45079a8bc7e6a4cf81f9..4b3ee17db72e29b9f417994477a= d8a0ec2294db1 100644 --- a/drivers/crypto/qce/dma.h +++ b/drivers/crypto/qce/dma.h @@ -47,6 +47,10 @@ qce_sgtable_add(struct sg_table *sgt, struct scatterlist= *sg_add, unsigned int max_len); void qce_write_dma(struct qce_device *qce, unsigned int offset, u32 val); int qce_submit_cmd_desc(struct qce_device *qce); +int qce_submit_cmd_desc_lock(struct qce_device *qce); +int qce_submit_cmd_desc_unlock(struct qce_device *qce); void qce_clear_bam_transaction(struct qce_device *qce); +int qce_bam_lock(struct qce_device *qce); +int qce_bam_unlock(struct qce_device *qce); =20 #endif /* _DMA_H_ */ --=20 2.47.3