Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 237 insertions, 0 deletions

diff --git a/drivers/crypto/marvell/octeontx/otx_cptvf_mbox.c b/drivers/crypto/marvell/octeontx/otx_cptvf_mbox.c
new file mode 100644
index 0000000000..90fdafb7c4
--- /dev/null
+++ b/drivers/crypto/marvell/octeontx/otx_cptvf_mbox.c
@@ -0,0 +1,237 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Marvell OcteonTX CPT driver
+ *
+ * Copyright (C) 2019 Marvell International Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/delay.h>
+#include "otx_cptvf.h"
+
+#define CPT_MBOX_MSG_TIMEOUT 2000
+
+static char *get_mbox_opcode_str(int msg_opcode)
+{
+	char *str = "Unknown";
+
+	switch (msg_opcode) {
+	case OTX_CPT_MSG_VF_UP:
+		str = "UP";
+		break;
+
+	case OTX_CPT_MSG_VF_DOWN:
+		str = "DOWN";
+		break;
+
+	case OTX_CPT_MSG_READY:
+		str = "READY";
+		break;
+
+	case OTX_CPT_MSG_QLEN:
+		str = "QLEN";
+		break;
+
+	case OTX_CPT_MSG_QBIND_GRP:
+		str = "QBIND_GRP";
+		break;
+
+	case OTX_CPT_MSG_VQ_PRIORITY:
+		str = "VQ_PRIORITY";
+		break;
+
+	case OTX_CPT_MSG_PF_TYPE:
+		str = "PF_TYPE";
+		break;
+
+	case OTX_CPT_MSG_ACK:
+		str = "ACK";
+		break;
+
+	case OTX_CPT_MSG_NACK:
+		str = "NACK";
+		break;
+	}
+	return str;
+}
+
+static void dump_mbox_msg(struct otx_cpt_mbox *mbox_msg, int vf_id)
+{
+	char raw_data_str[OTX_CPT_MAX_MBOX_DATA_STR_SIZE];
+
+	hex_dump_to_buffer(mbox_msg, sizeof(struct otx_cpt_mbox), 16, 8,
+			   raw_data_str, OTX_CPT_MAX_MBOX_DATA_STR_SIZE, false);
+	if (vf_id >= 0)
+		pr_debug("MBOX msg %s received from VF%d raw_data %s",
+			 get_mbox_opcode_str(mbox_msg->msg), vf_id,
+			 raw_data_str);
+	else
+		pr_debug("MBOX msg %s received from PF raw_data %s",
+			 get_mbox_opcode_str(mbox_msg->msg), raw_data_str);
+}
+
+static void cptvf_send_msg_to_pf(struct otx_cptvf *cptvf,
+				     struct otx_cpt_mbox *mbx)
+{
+	/* Writing mbox(1) causes interrupt */
+	writeq(mbx->msg, cptvf->reg_base + OTX_CPT_VFX_PF_MBOXX(0, 0));
+	writeq(mbx->data, cptvf->reg_base + OTX_CPT_VFX_PF_MBOXX(0, 1));
+}
+
+/* Interrupt handler to handle mailbox messages from VFs */
+void otx_cptvf_handle_mbox_intr(struct otx_cptvf *cptvf)
+{
+	struct otx_cpt_mbox mbx = {};
+
+	/*
+	 * MBOX[0] contains msg
+	 * MBOX[1] contains data
+	 */
+	mbx.msg  = readq(cptvf->reg_base + OTX_CPT_VFX_PF_MBOXX(0, 0));
+	mbx.data = readq(cptvf->reg_base + OTX_CPT_VFX_PF_MBOXX(0, 1));
+
+	dump_mbox_msg(&mbx, -1);
+
+	switch (mbx.msg) {
+	case OTX_CPT_MSG_VF_UP:
+		cptvf->pf_acked = true;
+		cptvf->num_vfs = mbx.data;
+		break;
+	case OTX_CPT_MSG_READY:
+		cptvf->pf_acked = true;
+		cptvf->vfid = mbx.data;
+		dev_dbg(&cptvf->pdev->dev, "Received VFID %d\n", cptvf->vfid);
+		break;
+	case OTX_CPT_MSG_QBIND_GRP:
+		cptvf->pf_acked = true;
+		cptvf->vftype = mbx.data;
+		dev_dbg(&cptvf->pdev->dev, "VF %d type %s group %d\n",
+			cptvf->vfid,
+			((mbx.data == OTX_CPT_SE_TYPES) ? "SE" : "AE"),
+			cptvf->vfgrp);
+		break;
+	case OTX_CPT_MSG_ACK:
+		cptvf->pf_acked = true;
+		break;
+	case OTX_CPT_MSG_NACK:
+		cptvf->pf_nacked = true;
+		break;
+	default:
+		dev_err(&cptvf->pdev->dev, "Invalid msg from PF, msg 0x%llx\n",
+			mbx.msg);
+		break;
+	}
+}
+
+static int cptvf_send_msg_to_pf_timeout(struct otx_cptvf *cptvf,
+					struct otx_cpt_mbox *mbx)
+{
+	int timeout = CPT_MBOX_MSG_TIMEOUT;
+	int sleep = 10;
+
+	cptvf->pf_acked = false;
+	cptvf->pf_nacked = false;
+	cptvf_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;
+		msleep(sleep);
+		if (cptvf->pf_acked)
+			break;
+		timeout -= sleep;
+		if (!timeout) {
+			dev_err(&cptvf->pdev->dev,
+				"PF didn't ack to mbox msg %llx from VF%u\n",
+				mbx->msg, cptvf->vfid);
+			return -EBUSY;
+		}
+	}
+	return 0;
+}
+
+/*
+ * Checks if VF is able to comminicate with PF
+ * and also gets the CPT number this VF is associated to.
+ */
+int otx_cptvf_check_pf_ready(struct otx_cptvf *cptvf)
+{
+	struct otx_cpt_mbox mbx = {};
+
+	mbx.msg = OTX_CPT_MSG_READY;
+
+	return cptvf_send_msg_to_pf_timeout(cptvf, &mbx);
+}
+
+/*
+ * Communicate VQs size to PF to program CPT(0)_PF_Q(0-15)_CTL of the VF.
+ * Must be ACKed.
+ */
+int otx_cptvf_send_vq_size_msg(struct otx_cptvf *cptvf)
+{
+	struct otx_cpt_mbox mbx = {};
+
+	mbx.msg = OTX_CPT_MSG_QLEN;
+	mbx.data = cptvf->qsize;
+
+	return cptvf_send_msg_to_pf_timeout(cptvf, &mbx);
+}
+
+/*
+ * Communicate VF group required to PF and get the VQ binded to that group
+ */
+int otx_cptvf_send_vf_to_grp_msg(struct otx_cptvf *cptvf, int group)
+{
+	struct otx_cpt_mbox mbx = {};
+	int ret;
+
+	mbx.msg = OTX_CPT_MSG_QBIND_GRP;
+	/* Convey group of the VF */
+	mbx.data = group;
+	ret = cptvf_send_msg_to_pf_timeout(cptvf, &mbx);
+	if (ret)
+		return ret;
+	cptvf->vfgrp = group;
+
+	return 0;
+}
+
+/*
+ * Communicate VF group required to PF and get the VQ binded to that group
+ */
+int otx_cptvf_send_vf_priority_msg(struct otx_cptvf *cptvf)
+{
+	struct otx_cpt_mbox mbx = {};
+
+	mbx.msg = OTX_CPT_MSG_VQ_PRIORITY;
+	/* Convey group of the VF */
+	mbx.data = cptvf->priority;
+
+	return cptvf_send_msg_to_pf_timeout(cptvf, &mbx);
+}
+
+/*
+ * Communicate to PF that VF is UP and running
+ */
+int otx_cptvf_send_vf_up(struct otx_cptvf *cptvf)
+{
+	struct otx_cpt_mbox mbx = {};
+
+	mbx.msg = OTX_CPT_MSG_VF_UP;
+
+	return cptvf_send_msg_to_pf_timeout(cptvf, &mbx);
+}
+
+/*
+ * Communicate to PF that VF is DOWN and running
+ */
+int otx_cptvf_send_vf_down(struct otx_cptvf *cptvf)
+{
+	struct otx_cpt_mbox mbx = {};
+
+	mbx.msg = OTX_CPT_MSG_VF_DOWN;
+
+	return cptvf_send_msg_to_pf_timeout(cptvf, &mbx);
+}