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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2018 Cavium, Inc
*/
#include <unistd.h>
#include "otx_cryptodev_hw_access.h"
#include "otx_cryptodev_mbox.h"
void
otx_cpt_handle_mbox_intr(struct cpt_vf *cptvf)
{
struct cpt_mbox mbx = {0, 0};
/*
* MBOX[0] contains msg
* MBOX[1] contains data
*/
mbx.msg = CPT_READ_CSR(CPT_CSR_REG_BASE(cptvf),
CPTX_VFX_PF_MBOXX(0, 0, 0));
mbx.data = CPT_READ_CSR(CPT_CSR_REG_BASE(cptvf),
CPTX_VFX_PF_MBOXX(0, 0, 1));
CPT_LOG_DP_DEBUG("%s: Mailbox msg 0x%lx from PF",
cptvf->dev_name, (unsigned int long)mbx.msg);
switch (mbx.msg) {
case OTX_CPT_MSG_READY:
{
otx_cpt_chipid_vfid_t cid;
cid.u64 = mbx.data;
cptvf->pf_acked = true;
cptvf->vfid = cid.s.vfid;
CPT_LOG_DP_DEBUG("%s: Received VFID %d chip_id %d",
cptvf->dev_name,
cptvf->vfid, cid.s.chip_id);
}
break;
case OTX_CPT_MSG_QBIND_GRP:
cptvf->pf_acked = true;
cptvf->vftype = mbx.data;
CPT_LOG_DP_DEBUG("%s: VF %d type %s group %d",
cptvf->dev_name, cptvf->vfid,
((mbx.data == SE_TYPE) ? "SE" : "AE"),
cptvf->vfgrp);
break;
case OTX_CPT_MBOX_MSG_TYPE_ACK:
cptvf->pf_acked = true;
break;
case OTX_CPT_MBOX_MSG_TYPE_NACK:
cptvf->pf_nacked = true;
break;
default:
CPT_LOG_DP_DEBUG("%s: Invalid msg from PF, msg 0x%lx",
cptvf->dev_name, (unsigned int long)mbx.msg);
break;
}
}
/* Send a mailbox message to PF
* @vf: vf from which this message to be sent
* @mbx: Message to be sent
*/
static void
otx_cpt_send_msg_to_pf(struct cpt_vf *cptvf, struct cpt_mbox *mbx)
{
/* Writing mbox(1) causes interrupt */
CPT_WRITE_CSR(CPT_CSR_REG_BASE(cptvf),
CPTX_VFX_PF_MBOXX(0, 0, 0), mbx->msg);
CPT_WRITE_CSR(CPT_CSR_REG_BASE(cptvf),
CPTX_VFX_PF_MBOXX(0, 0, 1), mbx->data);
}
static int32_t
otx_cpt_send_msg_to_pf_timeout(struct cpt_vf *cptvf, struct cpt_mbox *mbx)
{
int timeout = OTX_CPT_MBOX_MSG_TIMEOUT;
int sleep_ms = 10;
cptvf->pf_acked = false;
cptvf->pf_nacked = false;
otx_cpt_send_msg_to_pf(cptvf, mbx);
/* Wait for previous message to be acked, timeout 2sec */
while (!cptvf->pf_acked) {
if (cptvf->pf_nacked)
return -EINVAL;
usleep(sleep_ms * 1000);
otx_cpt_poll_misc(cptvf);
if (cptvf->pf_acked)
break;
timeout -= sleep_ms;
if (!timeout) {
CPT_LOG_ERR("%s: PF didn't ack mbox msg %lx(vfid %u)",
cptvf->dev_name,
(unsigned int long)(mbx->msg & 0xFF),
cptvf->vfid);
return -EBUSY;
}
}
return 0;
}
int
otx_cpt_check_pf_ready(struct cpt_vf *cptvf)
{
struct cpt_mbox mbx = {0, 0};
mbx.msg = OTX_CPT_MSG_READY;
if (otx_cpt_send_msg_to_pf_timeout(cptvf, &mbx)) {
CPT_LOG_ERR("%s: PF didn't respond to READY msg",
cptvf->dev_name);
return 1;
}
return 0;
}
int
otx_cpt_send_vq_size_msg(struct cpt_vf *cptvf)
{
struct cpt_mbox mbx = {0, 0};
mbx.msg = OTX_CPT_MSG_QLEN;
mbx.data = cptvf->qsize;
if (otx_cpt_send_msg_to_pf_timeout(cptvf, &mbx)) {
CPT_LOG_ERR("%s: PF didn't respond to vq_size msg",
cptvf->dev_name);
return 1;
}
return 0;
}
int
otx_cpt_send_vf_grp_msg(struct cpt_vf *cptvf, uint32_t group)
{
struct cpt_mbox mbx = {0, 0};
mbx.msg = OTX_CPT_MSG_QBIND_GRP;
/* Convey group of the VF */
mbx.data = group;
if (otx_cpt_send_msg_to_pf_timeout(cptvf, &mbx)) {
CPT_LOG_ERR("%s: PF didn't respond to vf_type msg",
cptvf->dev_name);
return 1;
}
return 0;
}
int
otx_cpt_send_vf_up(struct cpt_vf *cptvf)
{
struct cpt_mbox mbx = {0, 0};
mbx.msg = OTX_CPT_MSG_VF_UP;
if (otx_cpt_send_msg_to_pf_timeout(cptvf, &mbx)) {
CPT_LOG_ERR("%s: PF didn't respond to UP msg",
cptvf->dev_name);
return 1;
}
return 0;
}
int
otx_cpt_send_vf_down(struct cpt_vf *cptvf)
{
struct cpt_mbox mbx = {0, 0};
mbx.msg = OTX_CPT_MSG_VF_DOWN;
if (otx_cpt_send_msg_to_pf_timeout(cptvf, &mbx)) {
CPT_LOG_ERR("%s: PF didn't respond to DOWN msg",
cptvf->dev_name);
return 1;
}
return 0;
}
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