new file mode 100644
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright (c) 2022 Marvell.
+ */
+#ifndef __OCTEP_CP_VERSION_H__
+#define __OCTEP_CP_VERSION_H__
+
+#define OCTEP_CP_VERSION(a, b, c) ((((a) & 0xff) << 16) + \
+ (((b) & 0xff) << 8) + \
+ ((c) & 0xff))
+
+#endif /* __OCTEP_CP_VERSION_H__ */
@@ -37,7 +37,9 @@
#define OCTEP_CTRL_MBOX_INFO_MAGIC_NUM(m) (m)
#define OCTEP_CTRL_MBOX_INFO_BARMEM_SZ(m) ((m) + 8)
+#define OCTEP_CTRL_MBOX_INFO_HOST_VERSION(m) ((m) + 16)
#define OCTEP_CTRL_MBOX_INFO_HOST_STATUS(m) ((m) + 24)
+#define OCTEP_CTRL_MBOX_INFO_FW_VERSION(m) ((m) + 136)
#define OCTEP_CTRL_MBOX_INFO_FW_STATUS(m) ((m) + 144)
#define OCTEP_CTRL_MBOX_H2FQ_INFO(m) ((m) + OCTEP_CTRL_MBOX_INFO_SZ)
@@ -71,7 +73,7 @@ static u32 octep_ctrl_mbox_circq_depth(u32 pi, u32 ci, u32 sz)
int octep_ctrl_mbox_init(struct octep_ctrl_mbox *mbox)
{
- u64 magic_num, status;
+ u64 magic_num, status, fw_versions;
if (!mbox)
return -EINVAL;
@@ -93,6 +95,9 @@ int octep_ctrl_mbox_init(struct octep_ctrl_mbox *mbox)
return -EINVAL;
}
+ fw_versions = readq(OCTEP_CTRL_MBOX_INFO_FW_VERSION(mbox->barmem));
+ mbox->min_fw_version = ((fw_versions & 0xffffffff00000000ull) >> 32);
+ mbox->max_fw_version = (fw_versions & 0xffffffff);
mbox->barmem_sz = readl(OCTEP_CTRL_MBOX_INFO_BARMEM_SZ(mbox->barmem));
writeq(OCTEP_CTRL_MBOX_STATUS_INIT,
@@ -113,6 +118,7 @@ int octep_ctrl_mbox_init(struct octep_ctrl_mbox *mbox)
OCTEP_CTRL_MBOX_TOTAL_INFO_SZ +
mbox->h2fq.sz;
+ writeq(mbox->version, OCTEP_CTRL_MBOX_INFO_HOST_VERSION(mbox->barmem));
/* ensure ready state is seen after everything is initialized */
wmb();
writeq(OCTEP_CTRL_MBOX_STATUS_READY,
@@ -258,6 +264,7 @@ int octep_ctrl_mbox_uninit(struct octep_ctrl_mbox *mbox)
if (!mbox->barmem)
return -EINVAL;
+ writeq(0, OCTEP_CTRL_MBOX_INFO_HOST_VERSION(mbox->barmem));
writeq(OCTEP_CTRL_MBOX_STATUS_INVALID,
OCTEP_CTRL_MBOX_INFO_HOST_STATUS(mbox->barmem));
/* ensure uninit state is written before uninitialization */
@@ -121,6 +121,8 @@ struct octep_ctrl_mbox_q {
};
struct octep_ctrl_mbox {
+ /* control plane version */
+ u64 version;
/* size of bar memory */
u32 barmem_sz;
/* pointer to BAR memory */
@@ -133,6 +135,10 @@ struct octep_ctrl_mbox {
struct mutex h2fq_lock;
/* lock for f2hq */
struct mutex f2hq_lock;
+ /* Min control plane version supported by firmware */
+ u32 min_fw_version;
+ /* Max control plane version supported by firmware */
+ u32 max_fw_version;
};
/* Initialize control mbox.
@@ -14,6 +14,9 @@
#include "octep_main.h"
#include "octep_ctrl_net.h"
+/* Control plane version */
+#define OCTEP_CP_VERSION_CURRENT OCTEP_CP_VERSION(1, 0, 0)
+
static const u32 req_hdr_sz = sizeof(union octep_ctrl_net_req_hdr);
static const u32 mtu_sz = sizeof(struct octep_ctrl_net_h2f_req_cmd_mtu);
static const u32 mac_sz = sizeof(struct octep_ctrl_net_h2f_req_cmd_mac);
@@ -21,6 +24,18 @@ static const u32 state_sz = sizeof(struct octep_ctrl_net_h2f_req_cmd_state);
static const u32 link_info_sz = sizeof(struct octep_ctrl_net_link_info);
static atomic_t ctrl_net_msg_id;
+/* Control plane version in which OCTEP_CTRL_NET_H2F_CMD was added */
+static const u32 octep_ctrl_net_h2f_cmd_versions[OCTEP_CTRL_NET_H2F_CMD_MAX] = {
+ [OCTEP_CTRL_NET_H2F_CMD_INVALID ... OCTEP_CTRL_NET_H2F_CMD_LINK_INFO] =
+ OCTEP_CP_VERSION(1, 0, 0)
+};
+
+/* Control plane version in which OCTEP_CTRL_NET_F2H_CMD was added */
+static const u32 octep_ctrl_net_f2h_cmd_versions[OCTEP_CTRL_NET_F2H_CMD_MAX] = {
+ [OCTEP_CTRL_NET_F2H_CMD_INVALID ... OCTEP_CTRL_NET_F2H_CMD_LINK_STATUS] =
+ OCTEP_CP_VERSION(1, 0, 0)
+};
+
static void init_send_req(struct octep_ctrl_mbox_msg *msg, void *buf,
u16 sz, int vfid)
{
@@ -41,7 +56,13 @@ static int octep_send_mbox_req(struct octep_device *oct,
struct octep_ctrl_net_wait_data *d,
bool wait_for_response)
{
- int err, ret;
+ int err, ret, cmd;
+
+ /* check if firmware is compatible for this request */
+ cmd = d->data.req.hdr.s.cmd;
+ if (octep_ctrl_net_h2f_cmd_versions[cmd] > oct->ctrl_mbox.max_fw_version ||
+ octep_ctrl_net_h2f_cmd_versions[cmd] < oct->ctrl_mbox.min_fw_version)
+ return -EOPNOTSUPP;
err = octep_ctrl_mbox_send(&oct->ctrl_mbox, &d->msg);
if (err < 0)
@@ -84,12 +105,16 @@ int octep_ctrl_net_init(struct octep_device *oct)
/* Initialize control mbox */
ctrl_mbox = &oct->ctrl_mbox;
+ ctrl_mbox->version = OCTEP_CP_VERSION_CURRENT;
ctrl_mbox->barmem = CFG_GET_CTRL_MBOX_MEM_ADDR(oct->conf);
ret = octep_ctrl_mbox_init(ctrl_mbox);
if (ret) {
dev_err(&pdev->dev, "Failed to initialize control mbox\n");
return ret;
}
+ dev_info(&pdev->dev, "Control plane versions host: %llx, firmware: %x:%x\n",
+ ctrl_mbox->version, ctrl_mbox->min_fw_version,
+ ctrl_mbox->max_fw_version);
oct->ctrl_mbox_ifstats_offset = ctrl_mbox->barmem_sz;
return 0;
@@ -273,9 +298,17 @@ static int process_mbox_notify(struct octep_device *oct,
{
struct net_device *netdev = oct->netdev;
struct octep_ctrl_net_f2h_req *req;
+ int cmd;
req = (struct octep_ctrl_net_f2h_req *)msg->sg_list[0].msg;
- switch (req->hdr.s.cmd) {
+ cmd = req->hdr.s.cmd;
+
+ /* check if we support this command */
+ if (octep_ctrl_net_f2h_cmd_versions[cmd] > OCTEP_CP_VERSION_CURRENT ||
+ octep_ctrl_net_f2h_cmd_versions[cmd] < OCTEP_CP_VERSION_CURRENT)
+ return -EOPNOTSUPP;
+
+ switch (cmd) {
case OCTEP_CTRL_NET_F2H_CMD_LINK_STATUS:
if (netif_running(netdev)) {
if (req->link.state) {
@@ -7,6 +7,8 @@
#ifndef __OCTEP_CTRL_NET_H__
#define __OCTEP_CTRL_NET_H__
+#include "octep_cp_version.h"
+
#define OCTEP_CTRL_NET_INVALID_VFID (-1)
/* Supported commands */
@@ -39,12 +41,14 @@ enum octep_ctrl_net_h2f_cmd {
OCTEP_CTRL_NET_H2F_CMD_LINK_STATUS,
OCTEP_CTRL_NET_H2F_CMD_RX_STATE,
OCTEP_CTRL_NET_H2F_CMD_LINK_INFO,
+ OCTEP_CTRL_NET_H2F_CMD_MAX
};
/* Supported fw to host commands */
enum octep_ctrl_net_f2h_cmd {
OCTEP_CTRL_NET_F2H_CMD_INVALID = 0,
OCTEP_CTRL_NET_F2H_CMD_LINK_STATUS,
+ OCTEP_CTRL_NET_F2H_CMD_MAX
};
union octep_ctrl_net_req_hdr {