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// SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0-only)
/* Copyright(c) 2015 - 2021 Intel Corporation */
#include <linux/delay.h>
#include <linux/pci.h>
#include "adf_accel_devices.h"
#include "adf_pfvf_msg.h"
#include "adf_pfvf_pf_msg.h"
#include "adf_pfvf_pf_proto.h"
#define ADF_PF_WAIT_RESTARTING_COMPLETE_DELAY 100
#define ADF_VF_SHUTDOWN_RETRY 100
void adf_pf2vf_notify_restarting(struct adf_accel_dev *accel_dev)
{
struct adf_accel_vf_info *vf;
struct pfvf_message msg = { .type = ADF_PF2VF_MSGTYPE_RESTARTING };
int i, num_vfs = pci_num_vf(accel_to_pci_dev(accel_dev));
dev_dbg(&GET_DEV(accel_dev), "pf2vf notify restarting\n");
for (i = 0, vf = accel_dev->pf.vf_info; i < num_vfs; i++, vf++) {
vf->restarting = false;
if (!vf->init)
continue;
if (adf_send_pf2vf_msg(accel_dev, i, msg))
dev_err(&GET_DEV(accel_dev),
"Failed to send restarting msg to VF%d\n", i);
else if (vf->vf_compat_ver >= ADF_PFVF_COMPAT_FALLBACK)
vf->restarting = true;
}
}
void adf_pf2vf_wait_for_restarting_complete(struct adf_accel_dev *accel_dev)
{
int num_vfs = pci_num_vf(accel_to_pci_dev(accel_dev));
int i, retries = ADF_VF_SHUTDOWN_RETRY;
struct adf_accel_vf_info *vf;
bool vf_running;
dev_dbg(&GET_DEV(accel_dev), "pf2vf wait for restarting complete\n");
do {
vf_running = false;
for (i = 0, vf = accel_dev->pf.vf_info; i < num_vfs; i++, vf++)
if (vf->restarting)
vf_running = true;
if (!vf_running)
break;
msleep(ADF_PF_WAIT_RESTARTING_COMPLETE_DELAY);
} while (--retries);
if (vf_running)
dev_warn(&GET_DEV(accel_dev), "Some VFs are still running\n");
}
void adf_pf2vf_notify_restarted(struct adf_accel_dev *accel_dev)
{
struct pfvf_message msg = { .type = ADF_PF2VF_MSGTYPE_RESTARTED };
int i, num_vfs = pci_num_vf(accel_to_pci_dev(accel_dev));
struct adf_accel_vf_info *vf;
dev_dbg(&GET_DEV(accel_dev), "pf2vf notify restarted\n");
for (i = 0, vf = accel_dev->pf.vf_info; i < num_vfs; i++, vf++) {
if (vf->init && vf->vf_compat_ver >= ADF_PFVF_COMPAT_FALLBACK &&
adf_send_pf2vf_msg(accel_dev, i, msg))
dev_err(&GET_DEV(accel_dev),
"Failed to send restarted msg to VF%d\n", i);
}
}
void adf_pf2vf_notify_fatal_error(struct adf_accel_dev *accel_dev)
{
struct pfvf_message msg = { .type = ADF_PF2VF_MSGTYPE_FATAL_ERROR };
int i, num_vfs = pci_num_vf(accel_to_pci_dev(accel_dev));
struct adf_accel_vf_info *vf;
dev_dbg(&GET_DEV(accel_dev), "pf2vf notify fatal error\n");
for (i = 0, vf = accel_dev->pf.vf_info; i < num_vfs; i++, vf++) {
if (vf->init && vf->vf_compat_ver >= ADF_PFVF_COMPAT_FALLBACK &&
adf_send_pf2vf_msg(accel_dev, i, msg))
dev_err(&GET_DEV(accel_dev),
"Failed to send fatal error msg to VF%d\n", i);
}
}
int adf_pf_capabilities_msg_provider(struct adf_accel_dev *accel_dev,
u8 *buffer, u8 compat)
{
struct adf_hw_device_data *hw_data = accel_dev->hw_device;
struct capabilities_v2 caps_msg;
caps_msg.ext_dc_caps = hw_data->extended_dc_capabilities;
caps_msg.capabilities = hw_data->accel_capabilities_mask;
caps_msg.hdr.version = ADF_PFVF_CAPABILITIES_V2_VERSION;
caps_msg.hdr.payload_size =
ADF_PFVF_BLKMSG_PAYLOAD_SIZE(struct capabilities_v2);
memcpy(buffer, &caps_msg, sizeof(caps_msg));
return 0;
}
int adf_pf_ring_to_svc_msg_provider(struct adf_accel_dev *accel_dev,
u8 *buffer, u8 compat)
{
struct ring_to_svc_map_v1 rts_map_msg;
rts_map_msg.map = accel_dev->hw_device->ring_to_svc_map;
rts_map_msg.hdr.version = ADF_PFVF_RING_TO_SVC_VERSION;
rts_map_msg.hdr.payload_size = ADF_PFVF_BLKMSG_PAYLOAD_SIZE(rts_map_msg);
memcpy(buffer, &rts_map_msg, sizeof(rts_map_msg));
return 0;
}
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