Imported Upstream version 16.07-rc1

Change-Id: I40a523e52f12e8496fdd69e902824b0226c303de
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>

1 files changed, 418 insertions, 0 deletions

diff --git a/drivers/net/thunderx/base/nicvf_mbox.c b/drivers/net/thunderx/base/nicvf_mbox.c
new file mode 100644
index 00000000..9c5cd834
--- /dev/null
+++ b/drivers/net/thunderx/base/nicvf_mbox.c
@@ -0,0 +1,418 @@
+/*
+ *   BSD LICENSE
+ *
+ *   Copyright (C) Cavium networks Ltd. 2016.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of Cavium networks nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <assert.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "nicvf_plat.h"
+
+#define NICVF_MBOX_PF_RESPONSE_DELAY_US   (1000)
+
+static const char *mbox_message[NIC_MBOX_MSG_MAX] =  {
+	[NIC_MBOX_MSG_INVALID]            = "NIC_MBOX_MSG_INVALID",
+	[NIC_MBOX_MSG_READY]              = "NIC_MBOX_MSG_READY",
+	[NIC_MBOX_MSG_ACK]                = "NIC_MBOX_MSG_ACK",
+	[NIC_MBOX_MSG_NACK]               = "NIC_MBOX_MSG_ACK",
+	[NIC_MBOX_MSG_QS_CFG]             = "NIC_MBOX_MSG_QS_CFG",
+	[NIC_MBOX_MSG_RQ_CFG]             = "NIC_MBOX_MSG_RQ_CFG",
+	[NIC_MBOX_MSG_SQ_CFG]             = "NIC_MBOX_MSG_SQ_CFG",
+	[NIC_MBOX_MSG_RQ_DROP_CFG]        = "NIC_MBOX_MSG_RQ_DROP_CFG",
+	[NIC_MBOX_MSG_SET_MAC]            = "NIC_MBOX_MSG_SET_MAC",
+	[NIC_MBOX_MSG_SET_MAX_FRS]        = "NIC_MBOX_MSG_SET_MAX_FRS",
+	[NIC_MBOX_MSG_CPI_CFG]            = "NIC_MBOX_MSG_CPI_CFG",
+	[NIC_MBOX_MSG_RSS_SIZE]           = "NIC_MBOX_MSG_RSS_SIZE",
+	[NIC_MBOX_MSG_RSS_CFG]            = "NIC_MBOX_MSG_RSS_CFG",
+	[NIC_MBOX_MSG_RSS_CFG_CONT]       = "NIC_MBOX_MSG_RSS_CFG_CONT",
+	[NIC_MBOX_MSG_RQ_BP_CFG]          = "NIC_MBOX_MSG_RQ_BP_CFG",
+	[NIC_MBOX_MSG_RQ_SW_SYNC]         = "NIC_MBOX_MSG_RQ_SW_SYNC",
+	[NIC_MBOX_MSG_BGX_LINK_CHANGE]    = "NIC_MBOX_MSG_BGX_LINK_CHANGE",
+	[NIC_MBOX_MSG_ALLOC_SQS]          = "NIC_MBOX_MSG_ALLOC_SQS",
+	[NIC_MBOX_MSG_LOOPBACK]           = "NIC_MBOX_MSG_LOOPBACK",
+	[NIC_MBOX_MSG_RESET_STAT_COUNTER] = "NIC_MBOX_MSG_RESET_STAT_COUNTER",
+	[NIC_MBOX_MSG_CFG_DONE]           = "NIC_MBOX_MSG_CFG_DONE",
+	[NIC_MBOX_MSG_SHUTDOWN]           = "NIC_MBOX_MSG_SHUTDOWN",
+};
+
+static inline const char * __attribute__((unused))
+nicvf_mbox_msg_str(int msg)
+{
+	assert(msg >= 0 && msg < NIC_MBOX_MSG_MAX);
+	/* undefined messages */
+	if (mbox_message[msg] == NULL)
+		msg = 0;
+	return mbox_message[msg];
+}
+
+static inline void
+nicvf_mbox_send_msg_to_pf_raw(struct nicvf *nic, struct nic_mbx *mbx)
+{
+	uint64_t *mbx_data;
+	uint64_t mbx_addr;
+	int i;
+
+	mbx_addr = NIC_VF_PF_MAILBOX_0_1;
+	mbx_data = (uint64_t *)mbx;
+	for (i = 0; i < NIC_PF_VF_MAILBOX_SIZE; i++) {
+		nicvf_reg_write(nic, mbx_addr, *mbx_data);
+		mbx_data++;
+		mbx_addr += sizeof(uint64_t);
+	}
+	nicvf_mbox_log("msg sent %s (VF%d)",
+			nicvf_mbox_msg_str(mbx->msg.msg), nic->vf_id);
+}
+
+static inline void
+nicvf_mbox_send_async_msg_to_pf(struct nicvf *nic, struct nic_mbx *mbx)
+{
+	nicvf_mbox_send_msg_to_pf_raw(nic, mbx);
+	/* Messages without ack are racy!*/
+	nicvf_delay_us(NICVF_MBOX_PF_RESPONSE_DELAY_US);
+}
+
+static inline int
+nicvf_mbox_send_msg_to_pf(struct nicvf *nic, struct nic_mbx *mbx)
+{
+	long timeout;
+	long sleep = 10;
+	int i, retry = 5;
+
+	for (i = 0; i < retry; i++) {
+		nic->pf_acked = false;
+		nic->pf_nacked = false;
+		nicvf_smp_wmb();
+
+		nicvf_mbox_send_msg_to_pf_raw(nic, mbx);
+		/* Give some time to get PF response */
+		nicvf_delay_us(NICVF_MBOX_PF_RESPONSE_DELAY_US);
+		timeout = NIC_MBOX_MSG_TIMEOUT;
+		while (timeout > 0) {
+			/* Periodic poll happens from nicvf_interrupt() */
+			nicvf_smp_rmb();
+
+			if (nic->pf_nacked)
+				return -EINVAL;
+			if (nic->pf_acked)
+				return 0;
+
+			nicvf_delay_us(NICVF_MBOX_PF_RESPONSE_DELAY_US);
+			timeout -= sleep;
+		}
+		nicvf_log_error("PF didn't ack to msg 0x%02x %s VF%d (%d/%d)",
+				mbx->msg.msg, nicvf_mbox_msg_str(mbx->msg.msg),
+				nic->vf_id, i, retry);
+	}
+	return -EBUSY;
+}
+
+
+int
+nicvf_handle_mbx_intr(struct nicvf *nic)
+{
+	struct nic_mbx mbx;
+	uint64_t *mbx_data = (uint64_t *)&mbx;
+	uint64_t mbx_addr = NIC_VF_PF_MAILBOX_0_1;
+	size_t i;
+
+	for (i = 0; i < NIC_PF_VF_MAILBOX_SIZE; i++) {
+		*mbx_data = nicvf_reg_read(nic, mbx_addr);
+		mbx_data++;
+		mbx_addr += sizeof(uint64_t);
+	}
+
+	/* Overwrite the message so we won't receive it again */
+	nicvf_reg_write(nic, NIC_VF_PF_MAILBOX_0_1, 0x0);
+
+	nicvf_mbox_log("msg received id=0x%hhx %s (VF%d)", mbx.msg.msg,
+			nicvf_mbox_msg_str(mbx.msg.msg), nic->vf_id);
+
+	switch (mbx.msg.msg) {
+	case NIC_MBOX_MSG_READY:
+		nic->vf_id = mbx.nic_cfg.vf_id & 0x7F;
+		nic->tns_mode = mbx.nic_cfg.tns_mode & 0x7F;
+		nic->node = mbx.nic_cfg.node_id;
+		nic->sqs_mode = mbx.nic_cfg.sqs_mode;
+		nic->loopback_supported = mbx.nic_cfg.loopback_supported;
+		ether_addr_copy((struct ether_addr *)mbx.nic_cfg.mac_addr,
+				(struct ether_addr *)nic->mac_addr);
+		nic->pf_acked = true;
+		break;
+	case NIC_MBOX_MSG_ACK:
+		nic->pf_acked = true;
+		break;
+	case NIC_MBOX_MSG_NACK:
+		nic->pf_nacked = true;
+		break;
+	case NIC_MBOX_MSG_RSS_SIZE:
+		nic->rss_info.rss_size = mbx.rss_size.ind_tbl_size;
+		nic->pf_acked = true;
+		break;
+	case NIC_MBOX_MSG_BGX_LINK_CHANGE:
+		nic->link_up = mbx.link_status.link_up;
+		nic->duplex = mbx.link_status.duplex;
+		nic->speed = mbx.link_status.speed;
+		nic->pf_acked = true;
+		break;
+	default:
+		nicvf_log_error("Invalid message from PF, msg_id=0x%hhx %s",
+				mbx.msg.msg, nicvf_mbox_msg_str(mbx.msg.msg));
+		break;
+	}
+	nicvf_smp_wmb();
+
+	return mbx.msg.msg;
+}
+
+/*
+ * Checks if VF is able to communicate with PF
+ * and also gets the VNIC number this VF is associated to.
+ */
+int
+nicvf_mbox_check_pf_ready(struct nicvf *nic)
+{
+	struct nic_mbx mbx = { .msg = {.msg = NIC_MBOX_MSG_READY} };
+
+	return nicvf_mbox_send_msg_to_pf(nic, &mbx);
+}
+
+int
+nicvf_mbox_set_mac_addr(struct nicvf *nic,
+			const uint8_t mac[NICVF_MAC_ADDR_SIZE])
+{
+	struct nic_mbx mbx = { .msg = {0} };
+	int i;
+
+	mbx.msg.msg = NIC_MBOX_MSG_SET_MAC;
+	mbx.mac.vf_id = nic->vf_id;
+	for (i = 0; i < 6; i++)
+		mbx.mac.mac_addr[i] = mac[i];
+
+	return nicvf_mbox_send_msg_to_pf(nic, &mbx);
+}
+
+int
+nicvf_mbox_config_cpi(struct nicvf *nic, uint32_t qcnt)
+{
+	struct nic_mbx mbx = { .msg = { 0 } };
+
+	mbx.msg.msg = NIC_MBOX_MSG_CPI_CFG;
+	mbx.cpi_cfg.vf_id = nic->vf_id;
+	mbx.cpi_cfg.cpi_alg = nic->cpi_alg;
+	mbx.cpi_cfg.rq_cnt = qcnt;
+
+	return nicvf_mbox_send_msg_to_pf(nic, &mbx);
+}
+
+int
+nicvf_mbox_get_rss_size(struct nicvf *nic)
+{
+	struct nic_mbx mbx = { .msg = { 0 } };
+
+	mbx.msg.msg = NIC_MBOX_MSG_RSS_SIZE;
+	mbx.rss_size.vf_id = nic->vf_id;
+
+	/* Result will be stored in nic->rss_info.rss_size */
+	return nicvf_mbox_send_msg_to_pf(nic, &mbx);
+}
+
+int
+nicvf_mbox_config_rss(struct nicvf *nic)
+{
+	struct nic_mbx mbx = { .msg = { 0 } };
+	struct nicvf_rss_reta_info *rss = &nic->rss_info;
+	size_t tot_len = rss->rss_size;
+	size_t cur_len;
+	size_t cur_idx = 0;
+	size_t i;
+
+	mbx.rss_cfg.vf_id = nic->vf_id;
+	mbx.rss_cfg.hash_bits = rss->hash_bits;
+	mbx.rss_cfg.tbl_len = 0;
+	mbx.rss_cfg.tbl_offset = 0;
+
+	while (cur_idx < tot_len) {
+		cur_len = nicvf_min(tot_len - cur_idx,
+				(size_t)RSS_IND_TBL_LEN_PER_MBX_MSG);
+		mbx.msg.msg = (cur_idx > 0) ?
+			NIC_MBOX_MSG_RSS_CFG_CONT : NIC_MBOX_MSG_RSS_CFG;
+		mbx.rss_cfg.tbl_offset = cur_idx;
+		mbx.rss_cfg.tbl_len = cur_len;
+		for (i = 0; i < cur_len; i++)
+			mbx.rss_cfg.ind_tbl[i] = rss->ind_tbl[cur_idx++];
+
+		if (nicvf_mbox_send_msg_to_pf(nic, &mbx))
+			return NICVF_ERR_RSS_TBL_UPDATE;
+	}
+
+	return 0;
+}
+
+int
+nicvf_mbox_rq_config(struct nicvf *nic, uint16_t qidx,
+		     struct pf_rq_cfg *pf_rq_cfg)
+{
+	struct nic_mbx mbx = { .msg = { 0 } };
+
+	mbx.msg.msg = NIC_MBOX_MSG_RQ_CFG;
+	mbx.rq.qs_num = nic->vf_id;
+	mbx.rq.rq_num = qidx;
+	mbx.rq.cfg = pf_rq_cfg->value;
+	return nicvf_mbox_send_msg_to_pf(nic, &mbx);
+}
+
+int
+nicvf_mbox_sq_config(struct nicvf *nic, uint16_t qidx)
+{
+	struct nic_mbx mbx = { .msg = { 0 } };
+
+	mbx.msg.msg = NIC_MBOX_MSG_SQ_CFG;
+	mbx.sq.qs_num = nic->vf_id;
+	mbx.sq.sq_num = qidx;
+	mbx.sq.sqs_mode = nic->sqs_mode;
+	mbx.sq.cfg = (nic->vf_id << 3) | qidx;
+	return nicvf_mbox_send_msg_to_pf(nic, &mbx);
+}
+
+int
+nicvf_mbox_qset_config(struct nicvf *nic, struct pf_qs_cfg *qs_cfg)
+{
+	struct nic_mbx mbx = { .msg = { 0 } };
+
+#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+	qs_cfg->be = 1;
+#endif
+	/* Send a mailbox msg to PF to config Qset */
+	mbx.msg.msg = NIC_MBOX_MSG_QS_CFG;
+	mbx.qs.num = nic->vf_id;
+	mbx.qs.cfg = qs_cfg->value;
+	return nicvf_mbox_send_msg_to_pf(nic, &mbx);
+}
+
+int
+nicvf_mbox_rq_drop_config(struct nicvf *nic, uint16_t qidx, bool enable)
+{
+	struct nic_mbx mbx = { .msg = { 0 } };
+	struct pf_rq_drop_cfg *drop_cfg;
+
+	/* Enable CQ drop to reserve sufficient CQEs for all tx packets */
+	mbx.msg.msg = NIC_MBOX_MSG_RQ_DROP_CFG;
+	mbx.rq.qs_num = nic->vf_id;
+	mbx.rq.rq_num = qidx;
+	drop_cfg = (struct pf_rq_drop_cfg *)&mbx.rq.cfg;
+	drop_cfg->value = 0;
+	if (enable) {
+		drop_cfg->cq_red = 1;
+		drop_cfg->cq_drop = 2;
+	}
+	return nicvf_mbox_send_msg_to_pf(nic, &mbx);
+}
+
+int
+nicvf_mbox_update_hw_max_frs(struct nicvf *nic, uint16_t mtu)
+{
+	struct nic_mbx mbx = { .msg = { 0 } };
+
+	mbx.msg.msg = NIC_MBOX_MSG_SET_MAX_FRS;
+	mbx.frs.max_frs = mtu;
+	mbx.frs.vf_id = nic->vf_id;
+	return nicvf_mbox_send_msg_to_pf(nic, &mbx);
+}
+
+int
+nicvf_mbox_rq_sync(struct nicvf *nic)
+{
+	struct nic_mbx mbx = { .msg = { 0 } };
+
+	/* Make sure all packets in the pipeline are written back into mem */
+	mbx.msg.msg = NIC_MBOX_MSG_RQ_SW_SYNC;
+	mbx.rq.cfg = 0;
+	return nicvf_mbox_send_msg_to_pf(nic, &mbx);
+}
+
+int
+nicvf_mbox_rq_bp_config(struct nicvf *nic, uint16_t qidx, bool enable)
+{
+	struct nic_mbx mbx = { .msg = { 0 } };
+
+	mbx.msg.msg = NIC_MBOX_MSG_RQ_BP_CFG;
+	mbx.rq.qs_num = nic->vf_id;
+	mbx.rq.rq_num = qidx;
+	mbx.rq.cfg = 0;
+	if (enable)
+		mbx.rq.cfg = (1ULL << 63) | (1ULL << 62) | (nic->vf_id << 0);
+	return nicvf_mbox_send_msg_to_pf(nic, &mbx);
+}
+
+int
+nicvf_mbox_loopback_config(struct nicvf *nic, bool enable)
+{
+	struct nic_mbx mbx = { .msg = { 0 } };
+
+	mbx.lbk.msg = NIC_MBOX_MSG_LOOPBACK;
+	mbx.lbk.vf_id = nic->vf_id;
+	mbx.lbk.enable = enable;
+	return nicvf_mbox_send_msg_to_pf(nic, &mbx);
+}
+
+int
+nicvf_mbox_reset_stat_counters(struct nicvf *nic, uint16_t rx_stat_mask,
+			       uint8_t tx_stat_mask, uint16_t rq_stat_mask,
+			       uint16_t sq_stat_mask)
+{
+	struct nic_mbx mbx = { .msg = { 0 } };
+
+	mbx.reset_stat.msg = NIC_MBOX_MSG_RESET_STAT_COUNTER;
+	mbx.reset_stat.rx_stat_mask = rx_stat_mask;
+	mbx.reset_stat.tx_stat_mask = tx_stat_mask;
+	mbx.reset_stat.rq_stat_mask = rq_stat_mask;
+	mbx.reset_stat.sq_stat_mask = sq_stat_mask;
+	return nicvf_mbox_send_msg_to_pf(nic, &mbx);
+}
+
+void
+nicvf_mbox_shutdown(struct nicvf *nic)
+{
+	struct nic_mbx mbx = { .msg = { 0 } };
+
+	mbx.msg.msg = NIC_MBOX_MSG_SHUTDOWN;
+	nicvf_mbox_send_msg_to_pf(nic, &mbx);
+}
+
+void
+nicvf_mbox_cfg_done(struct nicvf *nic)
+{
+	struct nic_mbx mbx = { .msg = { 0 } };
+
+	mbx.msg.msg = NIC_MBOX_MSG_CFG_DONE;
+	nicvf_mbox_send_async_msg_to_pf(nic, &mbx);
+}