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octeon_ep: support firmware notifications for VFs

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Notifications from firmware to vf has to pass through PF
control mbox and via PF-VF mailboxes. The notifications have to
be parsed out from the control mbox and passed to the
PF-VF mailbox in order to reach the corresponding VF.
Version compatibility should also be checked before messages
are passed to the mailboxes.

Signed-off-by: Shinas Rasheed <srasheed@marvell.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Shinas Rasheed 2023-12-15 10:14:25 -08:00 committed by Paolo Abeni
parent e28db8cbeb
commit 4ebb86a97c
3 changed files with 66 additions and 0 deletions
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6
drivers/net/ethernet/marvell/octeon_ep/octep_ctrl_net.c
View File

@ -13,6 +13,7 @@
#include "octep_config.h"
#include "octep_main.h"
#include "octep_ctrl_net.h"
#include "octep_pfvf_mbox.h"
/* Control plane version */
#define OCTEP_CP_VERSION_CURRENT OCTEP_CP_VERSION(1, 0, 0)
@ -329,6 +330,11 @@ static int process_mbox_notify(struct octep_device *oct,
octep_ctrl_net_f2h_cmd_versions[cmd] < OCTEP_CP_VERSION_CURRENT)
return -EOPNOTSUPP;
if (msg->hdr.s.is_vf) {
octep_pfvf_notify(oct, msg);
return 0;
}
switch (cmd) {
case OCTEP_CTRL_NET_F2H_CMD_LINK_STATUS:
if (netif_running(netdev)) {

58
drivers/net/ethernet/marvell/octeon_ep/octep_pfvf_mbox.c
View File

@ -21,6 +21,15 @@
#include "octep_pfvf_mbox.h"
#include "octep_ctrl_net.h"
/* When a new command is implemented, the below table should be updated
* with new command and it's version info.
*/
static u32 pfvf_cmd_versions[OCTEP_PFVF_MBOX_CMD_MAX] = {
[0 ... OCTEP_PFVF_MBOX_CMD_DEV_REMOVE] = OCTEP_PFVF_MBOX_VERSION_V1,
[OCTEP_PFVF_MBOX_CMD_GET_FW_INFO ... OCTEP_PFVF_MBOX_NOTIF_LINK_STATUS] =
OCTEP_PFVF_MBOX_VERSION_V2
};
static void octep_pfvf_validate_version(struct octep_device *oct, u32 vf_id,
union octep_pfvf_mbox_word cmd,
union octep_pfvf_mbox_word *rsp)
@ -87,6 +96,34 @@ static void octep_pfvf_set_rx_state(struct octep_device *oct, u32 vf_id,
rsp->s_link_state.type = OCTEP_PFVF_MBOX_TYPE_RSP_ACK;
}
static int octep_send_notification(struct octep_device *oct, u32 vf_id,
union octep_pfvf_mbox_word cmd)
{
u32 max_rings_per_vf, vf_mbox_queue;
struct octep_mbox *mbox;
/* check if VF PF Mailbox is compatible for this notification */
if (pfvf_cmd_versions[cmd.s.opcode] > oct->vf_info[vf_id].mbox_version) {
dev_dbg(&oct->pdev->dev, "VF Mbox doesn't support Notification:%d on VF ver:%d\n",
cmd.s.opcode, oct->vf_info[vf_id].mbox_version);
return -EOPNOTSUPP;
}
max_rings_per_vf = CFG_GET_MAX_RPVF(oct->conf);
vf_mbox_queue = vf_id * max_rings_per_vf;
if (!oct->mbox[vf_mbox_queue]) {
dev_err(&oct->pdev->dev, "Notif obtained for bad mbox vf %d\n", vf_id);
return -EINVAL;
}
mbox = oct->mbox[vf_mbox_queue];
mutex_lock(&mbox->lock);
writeq(cmd.u64, mbox->pf_vf_data_reg);
mutex_unlock(&mbox->lock);
return 0;
}
static void octep_pfvf_set_mtu(struct octep_device *oct, u32 vf_id,
union octep_pfvf_mbox_word cmd,
union octep_pfvf_mbox_word *rsp)
@ -326,6 +363,27 @@ static void octep_pfvf_pf_get_data(struct octep_device *oct,
}
}
void octep_pfvf_notify(struct octep_device *oct, struct octep_ctrl_mbox_msg *msg)
{
union octep_pfvf_mbox_word notif = { 0 };
struct octep_ctrl_net_f2h_req *req;
req = (struct octep_ctrl_net_f2h_req *)msg->sg_list[0].msg;
switch (req->hdr.s.cmd) {
case OCTEP_CTRL_NET_F2H_CMD_LINK_STATUS:
notif.s_link_status.opcode = OCTEP_PFVF_MBOX_NOTIF_LINK_STATUS;
notif.s_link_status.status = req->link.state;
break;
default:
pr_info("Unknown mbox notif for vf: %u\n",
req->hdr.s.cmd);
return;
}
notif.s.type = OCTEP_PFVF_MBOX_TYPE_CMD;
octep_send_notification(oct, msg->hdr.s.vf_idx, notif);
}
void octep_pfvf_mbox_work(struct work_struct *work)
{
struct octep_pfvf_mbox_wk *wk = container_of(work, struct octep_pfvf_mbox_wk, work);

2
drivers/net/ethernet/marvell/octeon_ep/octep_pfvf_mbox.h
View File

@ -37,6 +37,7 @@ enum octep_pfvf_mbox_opcode {
OCTEP_PFVF_MBOX_CMD_DEV_REMOVE,
OCTEP_PFVF_MBOX_CMD_GET_FW_INFO,
OCTEP_PFVF_MBOX_CMD_SET_OFFLOADS,
OCTEP_PFVF_MBOX_NOTIF_LINK_STATUS,
OCTEP_PFVF_MBOX_CMD_MAX,
};
@ -162,4 +163,5 @@ union octep_pfvf_mbox_word {
void octep_pfvf_mbox_work(struct work_struct *work);
int octep_setup_pfvf_mbox(struct octep_device *oct);
void octep_delete_pfvf_mbox(struct octep_device *oct);
void octep_pfvf_notify(struct octep_device *oct, struct octep_ctrl_mbox_msg *msg);
#endif