1 // SPDX-License-Identifier: GPL-2.0-only
2 /* Copyright (C) 2020 Marvell. */
4 #include "otx2_cpt_common.h"
5 #include "otx2_cptvf.h"
8 irqreturn_t otx2_cptvf_pfvf_mbox_intr(int __always_unused irq, void *arg)
10 struct otx2_cptvf_dev *cptvf = arg;
13 /* Read the interrupt bits */
14 intr = otx2_cpt_read64(cptvf->reg_base, BLKADDR_RVUM, 0,
18 /* Schedule work queue function to process the MBOX request */
19 queue_work(cptvf->pfvf_mbox_wq, &cptvf->pfvf_mbox_work);
20 /* Clear and ack the interrupt */
21 otx2_cpt_write64(cptvf->reg_base, BLKADDR_RVUM, 0,
22 OTX2_RVU_VF_INT, 0x1ULL);
27 static void process_pfvf_mbox_mbox_msg(struct otx2_cptvf_dev *cptvf,
28 struct mbox_msghdr *msg)
30 struct otx2_cptlfs_info *lfs = &cptvf->lfs;
31 struct otx2_cpt_kvf_limits_rsp *rsp_limits;
32 struct otx2_cpt_egrp_num_rsp *rsp_grp;
33 struct cpt_rd_wr_reg_msg *rsp_reg;
34 struct msix_offset_rsp *rsp_msix;
37 if (msg->id >= MBOX_MSG_MAX) {
38 dev_err(&cptvf->pdev->dev,
39 "MBOX msg with unknown ID %d\n", msg->id);
42 if (msg->sig != OTX2_MBOX_RSP_SIG) {
43 dev_err(&cptvf->pdev->dev,
44 "MBOX msg with wrong signature %x, ID %d\n",
50 cptvf->vf_id = ((msg->pcifunc >> RVU_PFVF_FUNC_SHIFT)
51 & RVU_PFVF_FUNC_MASK) - 1;
53 case MBOX_MSG_ATTACH_RESOURCES:
54 /* Check if resources were successfully attached */
56 lfs->are_lfs_attached = 1;
58 case MBOX_MSG_DETACH_RESOURCES:
59 /* Check if resources were successfully detached */
61 lfs->are_lfs_attached = 0;
63 case MBOX_MSG_MSIX_OFFSET:
64 rsp_msix = (struct msix_offset_rsp *) msg;
65 for (i = 0; i < rsp_msix->cptlfs; i++)
66 lfs->lf[i].msix_offset = rsp_msix->cptlf_msixoff[i];
68 case MBOX_MSG_CPT_RD_WR_REGISTER:
69 rsp_reg = (struct cpt_rd_wr_reg_msg *) msg;
71 dev_err(&cptvf->pdev->dev,
72 "Reg %llx rd/wr(%d) failed %d\n",
73 rsp_reg->reg_offset, rsp_reg->is_write,
77 if (!rsp_reg->is_write)
78 *rsp_reg->ret_val = rsp_reg->val;
80 case MBOX_MSG_GET_ENG_GRP_NUM:
81 rsp_grp = (struct otx2_cpt_egrp_num_rsp *) msg;
82 cptvf->lfs.kcrypto_eng_grp_num = rsp_grp->eng_grp_num;
84 case MBOX_MSG_GET_KVF_LIMITS:
85 rsp_limits = (struct otx2_cpt_kvf_limits_rsp *) msg;
86 cptvf->lfs.kvf_limits = rsp_limits->kvf_limits;
89 dev_err(&cptvf->pdev->dev, "Unsupported msg %d received.\n",
95 void otx2_cptvf_pfvf_mbox_handler(struct work_struct *work)
97 struct otx2_cptvf_dev *cptvf;
98 struct otx2_mbox *pfvf_mbox;
99 struct otx2_mbox_dev *mdev;
100 struct mbox_hdr *rsp_hdr;
101 struct mbox_msghdr *msg;
104 /* sync with mbox memory region */
107 cptvf = container_of(work, struct otx2_cptvf_dev, pfvf_mbox_work);
108 pfvf_mbox = &cptvf->pfvf_mbox;
109 mdev = &pfvf_mbox->dev[0];
110 rsp_hdr = (struct mbox_hdr *)(mdev->mbase + pfvf_mbox->rx_start);
111 if (rsp_hdr->num_msgs == 0)
113 offset = ALIGN(sizeof(struct mbox_hdr), MBOX_MSG_ALIGN);
115 for (i = 0; i < rsp_hdr->num_msgs; i++) {
116 msg = (struct mbox_msghdr *)(mdev->mbase + pfvf_mbox->rx_start +
118 process_pfvf_mbox_mbox_msg(cptvf, msg);
119 offset = msg->next_msgoff;
122 otx2_mbox_reset(pfvf_mbox, 0);
125 int otx2_cptvf_send_eng_grp_num_msg(struct otx2_cptvf_dev *cptvf, int eng_type)
127 struct otx2_mbox *mbox = &cptvf->pfvf_mbox;
128 struct pci_dev *pdev = cptvf->pdev;
129 struct otx2_cpt_egrp_num_msg *req;
131 req = (struct otx2_cpt_egrp_num_msg *)
132 otx2_mbox_alloc_msg_rsp(mbox, 0, sizeof(*req),
133 sizeof(struct otx2_cpt_egrp_num_rsp));
135 dev_err(&pdev->dev, "RVU MBOX failed to get message.\n");
138 req->hdr.id = MBOX_MSG_GET_ENG_GRP_NUM;
139 req->hdr.sig = OTX2_MBOX_REQ_SIG;
140 req->hdr.pcifunc = OTX2_CPT_RVU_PFFUNC(cptvf->vf_id, 0);
141 req->eng_type = eng_type;
143 return otx2_cpt_send_mbox_msg(mbox, pdev);
146 int otx2_cptvf_send_kvf_limits_msg(struct otx2_cptvf_dev *cptvf)
148 struct otx2_mbox *mbox = &cptvf->pfvf_mbox;
149 struct pci_dev *pdev = cptvf->pdev;
150 struct mbox_msghdr *req;
153 req = (struct mbox_msghdr *)
154 otx2_mbox_alloc_msg_rsp(mbox, 0, sizeof(*req),
155 sizeof(struct otx2_cpt_kvf_limits_rsp));
157 dev_err(&pdev->dev, "RVU MBOX failed to get message.\n");
160 req->id = MBOX_MSG_GET_KVF_LIMITS;
161 req->sig = OTX2_MBOX_REQ_SIG;
162 req->pcifunc = OTX2_CPT_RVU_PFFUNC(cptvf->vf_id, 0);
164 ret = otx2_cpt_send_mbox_msg(mbox, pdev);