root/drivers/crypto/marvell/octeontx2/otx2_cpt_mbox_common.c
// SPDX-License-Identifier: GPL-2.0-only
/* Copyright (C) 2020 Marvell. */

#include "otx2_cpt_common.h"
#include "otx2_cptlf.h"

int otx2_cpt_send_mbox_msg(struct otx2_mbox *mbox, struct pci_dev *pdev)
{
        int ret;

        otx2_mbox_msg_send(mbox, 0);
        ret = otx2_mbox_wait_for_rsp(mbox, 0);
        if (ret == -EIO) {
                dev_err(&pdev->dev, "RVU MBOX timeout.\n");
                return ret;
        } else if (ret) {
                dev_err(&pdev->dev, "RVU MBOX error: %d.\n", ret);
                return -EFAULT;
        }
        return ret;
}
EXPORT_SYMBOL_NS_GPL(otx2_cpt_send_mbox_msg, "CRYPTO_DEV_OCTEONTX2_CPT");

int otx2_cpt_send_ready_msg(struct otx2_mbox *mbox, struct pci_dev *pdev)
{
        struct mbox_msghdr *req;

        req = otx2_mbox_alloc_msg_rsp(mbox, 0, sizeof(*req),
                                      sizeof(struct ready_msg_rsp));
        if (req == NULL) {
                dev_err(&pdev->dev, "RVU MBOX failed to get message.\n");
                return -EFAULT;
        }
        req->id = MBOX_MSG_READY;
        req->sig = OTX2_MBOX_REQ_SIG;
        req->pcifunc = 0;

        return otx2_cpt_send_mbox_msg(mbox, pdev);
}
EXPORT_SYMBOL_NS_GPL(otx2_cpt_send_ready_msg, "CRYPTO_DEV_OCTEONTX2_CPT");

int otx2_cpt_send_af_reg_requests(struct otx2_mbox *mbox, struct pci_dev *pdev)
{
        return otx2_cpt_send_mbox_msg(mbox, pdev);
}
EXPORT_SYMBOL_NS_GPL(otx2_cpt_send_af_reg_requests, "CRYPTO_DEV_OCTEONTX2_CPT");

static int otx2_cpt_add_read_af_reg(struct otx2_mbox *mbox,
                                    struct pci_dev *pdev, u64 reg,
                                    u64 *val, int blkaddr)
{
        struct cpt_rd_wr_reg_msg *reg_msg;

        reg_msg = (struct cpt_rd_wr_reg_msg *)
                        otx2_mbox_alloc_msg_rsp(mbox, 0, sizeof(*reg_msg),
                                                sizeof(*reg_msg));
        if (reg_msg == NULL) {
                dev_err(&pdev->dev, "RVU MBOX failed to get message.\n");
                return -EFAULT;
        }

        reg_msg->hdr.id = MBOX_MSG_CPT_RD_WR_REGISTER;
        reg_msg->hdr.sig = OTX2_MBOX_REQ_SIG;
        reg_msg->hdr.pcifunc = 0;

        reg_msg->is_write = 0;
        reg_msg->reg_offset = reg;
        reg_msg->ret_val = val;
        reg_msg->blkaddr = blkaddr;

        return 0;
}

int otx2_cpt_add_write_af_reg(struct otx2_mbox *mbox, struct pci_dev *pdev,
                              u64 reg, u64 val, int blkaddr)
{
        struct cpt_rd_wr_reg_msg *reg_msg;

        reg_msg = (struct cpt_rd_wr_reg_msg *)
                        otx2_mbox_alloc_msg_rsp(mbox, 0, sizeof(*reg_msg),
                                                sizeof(*reg_msg));
        if (reg_msg == NULL) {
                dev_err(&pdev->dev, "RVU MBOX failed to get message.\n");
                return -EFAULT;
        }

        reg_msg->hdr.id = MBOX_MSG_CPT_RD_WR_REGISTER;
        reg_msg->hdr.sig = OTX2_MBOX_REQ_SIG;
        reg_msg->hdr.pcifunc = 0;

        reg_msg->is_write = 1;
        reg_msg->reg_offset = reg;
        reg_msg->val = val;
        reg_msg->blkaddr = blkaddr;

        return 0;
}
EXPORT_SYMBOL_NS_GPL(otx2_cpt_add_write_af_reg, "CRYPTO_DEV_OCTEONTX2_CPT");

int otx2_cpt_read_af_reg(struct otx2_mbox *mbox, struct pci_dev *pdev,
                         u64 reg, u64 *val, int blkaddr)
{
        int ret;

        ret = otx2_cpt_add_read_af_reg(mbox, pdev, reg, val, blkaddr);
        if (ret)
                return ret;

        return otx2_cpt_send_mbox_msg(mbox, pdev);
}
EXPORT_SYMBOL_NS_GPL(otx2_cpt_read_af_reg, "CRYPTO_DEV_OCTEONTX2_CPT");

int otx2_cpt_write_af_reg(struct otx2_mbox *mbox, struct pci_dev *pdev,
                          u64 reg, u64 val, int blkaddr)
{
        int ret;

        ret = otx2_cpt_add_write_af_reg(mbox, pdev, reg, val, blkaddr);
        if (ret)
                return ret;

        return otx2_cpt_send_mbox_msg(mbox, pdev);
}
EXPORT_SYMBOL_NS_GPL(otx2_cpt_write_af_reg, "CRYPTO_DEV_OCTEONTX2_CPT");

int otx2_cpt_attach_rscrs_msg(struct otx2_cptlfs_info *lfs)
{
        struct otx2_mbox *mbox = lfs->mbox;
        struct rsrc_attach *req;
        int ret;

        req = (struct rsrc_attach *)
                        otx2_mbox_alloc_msg_rsp(mbox, 0, sizeof(*req),
                                                sizeof(struct msg_rsp));
        if (req == NULL) {
                dev_err(&lfs->pdev->dev, "RVU MBOX failed to get message.\n");
                return -EFAULT;
        }

        req->hdr.id = MBOX_MSG_ATTACH_RESOURCES;
        req->hdr.sig = OTX2_MBOX_REQ_SIG;
        req->hdr.pcifunc = 0;
        req->cptlfs = lfs->lfs_num;
        req->cpt_blkaddr = lfs->blkaddr;
        req->modify = 1;
        ret = otx2_cpt_send_mbox_msg(mbox, lfs->pdev);
        if (ret)
                return ret;

        if (!lfs->are_lfs_attached)
                ret = -EINVAL;

        return ret;
}

int otx2_cpt_detach_rsrcs_msg(struct otx2_cptlfs_info *lfs)
{
        struct otx2_mbox *mbox = lfs->mbox;
        struct rsrc_detach *req;
        int ret;

        req = (struct rsrc_detach *)
                                otx2_mbox_alloc_msg_rsp(mbox, 0, sizeof(*req),
                                                        sizeof(struct msg_rsp));
        if (req == NULL) {
                dev_err(&lfs->pdev->dev, "RVU MBOX failed to get message.\n");
                return -EFAULT;
        }

        req->hdr.id = MBOX_MSG_DETACH_RESOURCES;
        req->hdr.sig = OTX2_MBOX_REQ_SIG;
        req->hdr.pcifunc = 0;
        req->cptlfs = 1;
        ret = otx2_cpt_send_mbox_msg(mbox, lfs->pdev);
        if (ret)
                return ret;

        if (lfs->are_lfs_attached)
                ret = -EINVAL;

        return ret;
}
EXPORT_SYMBOL_NS_GPL(otx2_cpt_detach_rsrcs_msg, "CRYPTO_DEV_OCTEONTX2_CPT");

int otx2_cpt_msix_offset_msg(struct otx2_cptlfs_info *lfs)
{
        struct otx2_mbox *mbox = lfs->mbox;
        struct pci_dev *pdev = lfs->pdev;
        struct mbox_msghdr *req;
        int ret, i;

        req = otx2_mbox_alloc_msg_rsp(mbox, 0, sizeof(*req),
                                      sizeof(struct msix_offset_rsp));
        if (req == NULL) {
                dev_err(&pdev->dev, "RVU MBOX failed to get message.\n");
                return -EFAULT;
        }

        req->id = MBOX_MSG_MSIX_OFFSET;
        req->sig = OTX2_MBOX_REQ_SIG;
        req->pcifunc = 0;
        ret = otx2_cpt_send_mbox_msg(mbox, pdev);
        if (ret)
                return ret;

        for (i = 0; i < lfs->lfs_num; i++) {
                if (lfs->lf[i].msix_offset == MSIX_VECTOR_INVALID) {
                        dev_err(&pdev->dev,
                                "Invalid msix offset %d for LF %d\n",
                                lfs->lf[i].msix_offset, i);
                        return -EINVAL;
                }
        }
        return ret;
}
EXPORT_SYMBOL_NS_GPL(otx2_cpt_msix_offset_msg, "CRYPTO_DEV_OCTEONTX2_CPT");

int otx2_cpt_sync_mbox_msg(struct otx2_mbox *mbox)
{
        int err;

        if (!otx2_mbox_nonempty(mbox, 0))
                return 0;
        otx2_mbox_msg_send(mbox, 0);
        err = otx2_mbox_wait_for_rsp(mbox, 0);
        if (err)
                return err;

        return otx2_mbox_check_rsp_msgs(mbox, 0);
}
EXPORT_SYMBOL_NS_GPL(otx2_cpt_sync_mbox_msg, "CRYPTO_DEV_OCTEONTX2_CPT");

int otx2_cpt_lf_reset_msg(struct otx2_cptlfs_info *lfs, int slot)
{
        struct otx2_mbox *mbox = lfs->mbox;
        struct pci_dev *pdev = lfs->pdev;
        struct cpt_lf_rst_req *req;
        int ret;

        req = (struct cpt_lf_rst_req *)otx2_mbox_alloc_msg_rsp(mbox, 0, sizeof(*req),
                                                               sizeof(struct msg_rsp));
        if (!req) {
                dev_err(&pdev->dev, "RVU MBOX failed to get message.\n");
                return -EFAULT;
        }

        req->hdr.id = MBOX_MSG_CPT_LF_RESET;
        req->hdr.sig = OTX2_MBOX_REQ_SIG;
        req->hdr.pcifunc = 0;
        req->slot = slot;
        ret = otx2_cpt_send_mbox_msg(mbox, pdev);
        if (ret)
                return ret;

        return ret;
}
EXPORT_SYMBOL_NS_GPL(otx2_cpt_lf_reset_msg, "CRYPTO_DEV_OCTEONTX2_CPT");

int otx2_cpt_lmtst_tbl_setup_msg(struct otx2_cptlfs_info *lfs)
{
        struct otx2_mbox *mbox = lfs->mbox;
        struct pci_dev *pdev = lfs->pdev;
        struct lmtst_tbl_setup_req *req;

        req = (struct lmtst_tbl_setup_req *)
               otx2_mbox_alloc_msg_rsp(mbox, 0, sizeof(*req),
                                       sizeof(struct msg_rsp));
        if (!req) {
                dev_err(&pdev->dev, "RVU MBOX failed to alloc message.\n");
                return -EFAULT;
        }

        req->hdr.id = MBOX_MSG_LMTST_TBL_SETUP;
        req->hdr.sig = OTX2_MBOX_REQ_SIG;
        req->hdr.pcifunc = 0;

        req->use_local_lmt_region = true;
        req->lmt_iova = lfs->lmt_info.iova;

        return otx2_cpt_send_mbox_msg(mbox, pdev);
}
EXPORT_SYMBOL_NS_GPL(otx2_cpt_lmtst_tbl_setup_msg, "CRYPTO_DEV_OCTEONTX2_CPT");