diff options
Diffstat (limited to 'drivers/crypto/marvell/octeontx2/otx2_cptvf_mbox.c')
| -rw-r--r-- | drivers/crypto/marvell/octeontx2/otx2_cptvf_mbox.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/drivers/crypto/marvell/octeontx2/otx2_cptvf_mbox.c b/drivers/crypto/marvell/octeontx2/otx2_cptvf_mbox.c index 5d73b711cba6..02cb9e44afd8 100644 --- a/drivers/crypto/marvell/octeontx2/otx2_cptvf_mbox.c +++ b/drivers/crypto/marvell/octeontx2/otx2_cptvf_mbox.c @@ -5,6 +5,48 @@ #include "otx2_cptvf.h" #include <rvu_reg.h> +int otx2_cpt_mbox_bbuf_init(struct otx2_cptvf_dev *cptvf, struct pci_dev *pdev) +{ + struct otx2_mbox_dev *mdev; + struct otx2_mbox *otx2_mbox; + + cptvf->bbuf_base = devm_kmalloc(&pdev->dev, MBOX_SIZE, GFP_KERNEL); + if (!cptvf->bbuf_base) + return -ENOMEM; + /* + * Overwrite mbox mbase to point to bounce buffer, so that PF/VF + * prepare all mbox messages in bounce buffer instead of directly + * in hw mbox memory. + */ + otx2_mbox = &cptvf->pfvf_mbox; + mdev = &otx2_mbox->dev[0]; + mdev->mbase = cptvf->bbuf_base; + + return 0; +} + +static void otx2_cpt_sync_mbox_bbuf(struct otx2_mbox *mbox, int devid) +{ + u16 msgs_offset = ALIGN(sizeof(struct mbox_hdr), MBOX_MSG_ALIGN); + void *hw_mbase = mbox->hwbase + (devid * MBOX_SIZE); + struct otx2_mbox_dev *mdev = &mbox->dev[devid]; + struct mbox_hdr *hdr; + u64 msg_size; + + if (mdev->mbase == hw_mbase) + return; + + hdr = hw_mbase + mbox->rx_start; + msg_size = hdr->msg_size; + + if (msg_size > mbox->rx_size - msgs_offset) + msg_size = mbox->rx_size - msgs_offset; + + /* Copy mbox messages from mbox memory to bounce buffer */ + memcpy(mdev->mbase + mbox->rx_start, + hw_mbase + mbox->rx_start, msg_size + msgs_offset); +} + irqreturn_t otx2_cptvf_pfvf_mbox_intr(int __always_unused irq, void *arg) { struct otx2_cptvf_dev *cptvf = arg; @@ -106,6 +148,7 @@ void otx2_cptvf_pfvf_mbox_handler(struct work_struct *work) cptvf = container_of(work, struct otx2_cptvf_dev, pfvf_mbox_work); pfvf_mbox = &cptvf->pfvf_mbox; + otx2_cpt_sync_mbox_bbuf(pfvf_mbox, 0); mdev = &pfvf_mbox->dev[0]; rsp_hdr = (struct mbox_hdr *)(mdev->mbase + pfvf_mbox->rx_start); if (rsp_hdr->num_msgs == 0) |