From 1bd9b61222f3a81ffe770fc00b70ded6e760c42b Mon Sep 17 00:00:00 2001 From: Christian Ehrhardt Date: Fri, 1 Jun 2018 09:09:08 +0200 Subject: New upstream version 18.05 Change-Id: Icd4170ddc4f63aeae5d0559490e5195b5349f9c2 Signed-off-by: Christian Ehrhardt --- drivers/mempool/octeontx/octeontx_mbox.c | 214 ------------------------------- 1 file changed, 214 deletions(-) delete mode 100644 drivers/mempool/octeontx/octeontx_mbox.c (limited to 'drivers/mempool/octeontx/octeontx_mbox.c') diff --git a/drivers/mempool/octeontx/octeontx_mbox.c b/drivers/mempool/octeontx/octeontx_mbox.c deleted file mode 100644 index f8cb6a45..00000000 --- a/drivers/mempool/octeontx/octeontx_mbox.c +++ /dev/null @@ -1,214 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause - * Copyright(c) 2017 Cavium, Inc - */ - -#include - -#include -#include -#include -#include -#include - -#include "octeontx_mbox.h" -#include "octeontx_pool_logs.h" - -/* Mbox operation timeout in seconds */ -#define MBOX_WAIT_TIME_SEC 3 -#define MAX_RAM_MBOX_LEN ((SSOW_BAR4_LEN >> 1) - 8 /* Mbox header */) - -/* Mbox channel state */ -enum { - MBOX_CHAN_STATE_REQ = 1, - MBOX_CHAN_STATE_RES = 0, -}; - -/* Response messages */ -enum { - MBOX_RET_SUCCESS, - MBOX_RET_INVALID, - MBOX_RET_INTERNAL_ERR, -}; - -struct mbox { - int init_once; - uint8_t *ram_mbox_base; /* Base address of mbox message stored in ram */ - uint8_t *reg; /* Store to this register triggers PF mbox interrupt */ - uint16_t tag_own; /* Last tag which was written to own channel */ - rte_spinlock_t lock; -}; - -static struct mbox octeontx_mbox; - -/* - * Structure used for mbox synchronization - * This structure sits at the begin of Mbox RAM and used as main - * synchronization point for channel communication - */ -struct mbox_ram_hdr { - union { - uint64_t u64; - struct { - uint8_t chan_state : 1; - uint8_t coproc : 7; - uint8_t msg; - uint8_t vfid; - uint8_t res_code; - uint16_t tag; - uint16_t len; - }; - }; -}; - -static inline void -mbox_msgcpy(volatile uint8_t *d, volatile const uint8_t *s, uint16_t size) -{ - uint16_t i; - - for (i = 0; i < size; i++) - d[i] = s[i]; -} - -static inline void -mbox_send_request(struct mbox *m, struct octeontx_mbox_hdr *hdr, - const void *txmsg, uint16_t txsize) -{ - struct mbox_ram_hdr old_hdr; - struct mbox_ram_hdr new_hdr = { {0} }; - uint64_t *ram_mbox_hdr = (uint64_t *)m->ram_mbox_base; - uint8_t *ram_mbox_msg = m->ram_mbox_base + sizeof(struct mbox_ram_hdr); - - /* - * Initialize the channel with the tag left by last send. - * On success full mbox send complete, PF increments the tag by one. - * The sender can validate integrity of PF message with this scheme - */ - old_hdr.u64 = rte_read64(ram_mbox_hdr); - m->tag_own = (old_hdr.tag + 2) & (~0x1ul); /* next even number */ - - /* Copy msg body */ - if (txmsg) - mbox_msgcpy(ram_mbox_msg, txmsg, txsize); - - /* Prepare new hdr */ - new_hdr.chan_state = MBOX_CHAN_STATE_REQ; - new_hdr.coproc = hdr->coproc; - new_hdr.msg = hdr->msg; - new_hdr.vfid = hdr->vfid; - new_hdr.tag = m->tag_own; - new_hdr.len = txsize; - - /* Write the msg header */ - rte_write64(new_hdr.u64, ram_mbox_hdr); - rte_smp_wmb(); - /* Notify PF about the new msg - write to MBOX reg generates PF IRQ */ - rte_write64(0, m->reg); -} - -static inline int -mbox_wait_response(struct mbox *m, struct octeontx_mbox_hdr *hdr, - void *rxmsg, uint16_t rxsize) -{ - int res = 0, wait; - uint16_t len; - struct mbox_ram_hdr rx_hdr; - uint64_t *ram_mbox_hdr = (uint64_t *)m->ram_mbox_base; - uint8_t *ram_mbox_msg = m->ram_mbox_base + sizeof(struct mbox_ram_hdr); - - /* Wait for response */ - wait = MBOX_WAIT_TIME_SEC * 1000 * 10; - while (wait > 0) { - rte_delay_us(100); - rx_hdr.u64 = rte_read64(ram_mbox_hdr); - if (rx_hdr.chan_state == MBOX_CHAN_STATE_RES) - break; - --wait; - } - - hdr->res_code = rx_hdr.res_code; - m->tag_own++; - - /* Timeout */ - if (wait <= 0) { - res = -ETIMEDOUT; - goto error; - } - - /* Tag mismatch */ - if (m->tag_own != rx_hdr.tag) { - res = -EINVAL; - goto error; - } - - /* PF nacked the msg */ - if (rx_hdr.res_code != MBOX_RET_SUCCESS) { - res = -EBADMSG; - goto error; - } - - len = RTE_MIN(rx_hdr.len, rxsize); - if (rxmsg) - mbox_msgcpy(rxmsg, ram_mbox_msg, len); - - return len; - -error: - mbox_log_err("Failed to send mbox(%d/%d) coproc=%d msg=%d ret=(%d,%d)", - m->tag_own, rx_hdr.tag, hdr->coproc, hdr->msg, res, - hdr->res_code); - return res; -} - -static inline int -mbox_send(struct mbox *m, struct octeontx_mbox_hdr *hdr, const void *txmsg, - uint16_t txsize, void *rxmsg, uint16_t rxsize) -{ - int res = -EINVAL; - - if (m->init_once == 0 || hdr == NULL || - txsize > MAX_RAM_MBOX_LEN || rxsize > MAX_RAM_MBOX_LEN) { - mbox_log_err("Invalid init_once=%d hdr=%p txsz=%d rxsz=%d", - m->init_once, hdr, txsize, rxsize); - return res; - } - - rte_spinlock_lock(&m->lock); - - mbox_send_request(m, hdr, txmsg, txsize); - res = mbox_wait_response(m, hdr, rxmsg, rxsize); - - rte_spinlock_unlock(&m->lock); - return res; -} - -static inline int -mbox_setup(struct mbox *m) -{ - if (unlikely(m->init_once == 0)) { - rte_spinlock_init(&m->lock); - m->ram_mbox_base = octeontx_ssovf_bar(OCTEONTX_SSO_HWS, 0, 4); - m->reg = octeontx_ssovf_bar(OCTEONTX_SSO_GROUP, 0, 0); - m->reg += SSO_VHGRP_PF_MBOX(1); - - if (m->ram_mbox_base == NULL || m->reg == NULL) { - mbox_log_err("Invalid ram_mbox_base=%p or reg=%p", - m->ram_mbox_base, m->reg); - return -EINVAL; - } - m->init_once = 1; - } - return 0; -} - -int -octeontx_ssovf_mbox_send(struct octeontx_mbox_hdr *hdr, void *txdata, - uint16_t txlen, void *rxdata, uint16_t rxlen) -{ - struct mbox *m = &octeontx_mbox; - - RTE_BUILD_BUG_ON(sizeof(struct mbox_ram_hdr) != 8); - if (rte_eal_process_type() != RTE_PROC_PRIMARY || mbox_setup(m)) - return -EINVAL; - - return mbox_send(m, hdr, txdata, txlen, rxdata, rxlen); -} -- cgit 1.2.3-korg