diff options
Diffstat (limited to 'drivers/crypto/octeontx/otx_cryptodev_mbox.c')
| -rw-r--r-- | drivers/crypto/octeontx/otx_cryptodev_mbox.c | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/drivers/crypto/octeontx/otx_cryptodev_mbox.c b/drivers/crypto/octeontx/otx_cryptodev_mbox.c new file mode 100644 index 00000000..a8e51a8e --- /dev/null +++ b/drivers/crypto/octeontx/otx_cryptodev_mbox.c @@ -0,0 +1,178 @@ +/* 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; +} |