// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) Meta Platforms, Inc. and affiliates. */
#include <linux/unaligned.h>
#include <linux/pci.h>
#include <linux/pldmfw.h>
#include <linux/types.h>
#include <net/devlink.h>
#include "fbnic.h"
#include "fbnic_tlv.h"
#define FBNIC_SN_STR_LEN 24
static int fbnic_version_running_put(struct devlink_info_req *req,
struct fbnic_fw_ver *fw_ver,
char *ver_name)
{
char running_ver[FBNIC_FW_VER_MAX_SIZE];
int err;
fbnic_mk_fw_ver_str(fw_ver->version, running_ver);
err = devlink_info_version_running_put(req, ver_name, running_ver);
if (err)
return err;
if (strlen(fw_ver->commit) > 0) {
char commit_name[FBNIC_SN_STR_LEN];
snprintf(commit_name, FBNIC_SN_STR_LEN, "%s.commit" , ver_name);
err = devlink_info_version_running_put(req, commit_name,
fw_ver->commit);
if (err)
return err;
}
return 0;
}
static int fbnic_version_stored_put(struct devlink_info_req *req,
struct fbnic_fw_ver *fw_ver,
char *ver_name)
{
char stored_ver[FBNIC_FW_VER_MAX_SIZE];
int err;
fbnic_mk_fw_ver_str(fw_ver->version, stored_ver);
err = devlink_info_version_stored_put(req, ver_name, stored_ver);
if (err)
return err;
if (strlen(fw_ver->commit) > 0) {
char commit_name[FBNIC_SN_STR_LEN];
snprintf(commit_name, FBNIC_SN_STR_LEN, "%s.commit" , ver_name);
err = devlink_info_version_stored_put(req, commit_name,
fw_ver->commit);
if (err)
return err;
}
return 0;
}
static int fbnic_devlink_info_get(struct devlink *devlink,
struct devlink_info_req *req,
struct netlink_ext_ack *extack)
{
struct fbnic_dev *fbd = devlink_priv(devlink);
int err;
err = fbnic_version_running_put(req, &fbd->fw_cap.running.mgmt,
DEVLINK_INFO_VERSION_GENERIC_FW);
if (err)
return err;
err = fbnic_version_running_put(req, &fbd->fw_cap.running.bootloader,
DEVLINK_INFO_VERSION_GENERIC_FW_BOOTLOADER);
if (err)
return err;
err = fbnic_version_stored_put(req, &fbd->fw_cap.stored.mgmt,
DEVLINK_INFO_VERSION_GENERIC_FW);
if (err)
return err;
err = fbnic_version_stored_put(req, &fbd->fw_cap.stored.bootloader,
DEVLINK_INFO_VERSION_GENERIC_FW_BOOTLOADER);
if (err)
return err;
err = fbnic_version_stored_put(req, &fbd->fw_cap.stored.undi,
DEVLINK_INFO_VERSION_GENERIC_FW_UNDI);
if (err)
return err;
if (fbd->dsn) {
unsigned char serial[FBNIC_SN_STR_LEN];
u8 dsn[8];
put_unaligned_be64(fbd->dsn, dsn);
err = snprintf(serial, FBNIC_SN_STR_LEN, "%8phD" , dsn);
if (err < 0)
return err;
err = devlink_info_serial_number_put(req, serial);
if (err)
return err;
}
return 0;
}
static bool
fbnic_pldm_match_record(struct pldmfw *context, struct pldmfw_record *record)
{
struct pldmfw_desc_tlv *desc;
u32 anti_rollback_ver = 0;
struct devlink *devlink;
struct fbnic_dev *fbd;
struct pci_dev *pdev;
/* First, use the standard PCI matching function */
if (!pldmfw_op_pci_match_record(context, record))
return false ;
pdev = to_pci_dev(context->dev);
fbd = pci_get_drvdata(pdev);
devlink = priv_to_devlink(fbd);
/* If PCI match is successful, check for vendor-specific descriptors */
list_for_each_entry(desc, &record->descs, entry) {
if (desc->type != PLDM_DESC_ID_VENDOR_DEFINED)
continue ;
if (desc->size < 21 || desc->data[0] != 1 ||
desc->data[1] != 15)
continue ;
if (memcmp(desc->data + 2, "AntiRollbackVer" , 15) != 0)
continue ;
anti_rollback_ver = get_unaligned_le32(desc->data + 17);
break ;
}
/* Compare versions and return error if they do not match */
if (anti_rollback_ver < fbd->fw_cap.anti_rollback_version) {
char buf[128];
snprintf(buf, sizeof (buf),
"New firmware anti-rollback version (0x%x) is older than device version (0x%x)!" ,
anti_rollback_ver, fbd->fw_cap.anti_rollback_version);
devlink_flash_update_status_notify(devlink, buf,
"Anti-Rollback" , 0, 0);
return false ;
}
return true ;
}
static int
fbnic_flash_start(struct fbnic_dev *fbd, struct pldmfw_component *component)
{
struct fbnic_fw_completion *cmpl;
int err;
cmpl = fbnic_fw_alloc_cmpl(FBNIC_TLV_MSG_ID_FW_START_UPGRADE_REQ);
if (!cmpl)
return -ENOMEM;
err = fbnic_fw_xmit_fw_start_upgrade(fbd, cmpl,
component->identifier,
component->component_size);
if (err)
goto cmpl_free;
/* Wait for firmware to ack firmware upgrade start */
if (wait_for_completion_timeout(&cmpl->done, 10 * HZ))
err = cmpl->result;
else
err = -ETIMEDOUT;
fbnic_mbx_clear_cmpl(fbd, cmpl);
cmpl_free:
fbnic_fw_put_cmpl(cmpl);
return err;
}
static int
fbnic_flash_component(struct pldmfw *context,
struct pldmfw_component *component)
{
const u8 *data = component->component_data;
const u32 size = component->component_size;
struct fbnic_fw_completion *cmpl;
const char *component_name;
struct devlink *devlink;
struct fbnic_dev *fbd;
struct pci_dev *pdev;
u32 offset = 0;
u32 length = 0;
char buf[32];
int err;
pdev = to_pci_dev(context->dev);
fbd = pci_get_drvdata(pdev);
devlink = priv_to_devlink(fbd);
switch (component->identifier) {
case QSPI_SECTION_CMRT:
component_name = "boot1" ;
break ;
case QSPI_SECTION_CONTROL_FW:
component_name = "boot2" ;
break ;
case QSPI_SECTION_OPTION_ROM:
component_name = "option-rom" ;
break ;
default :
snprintf(buf, sizeof (buf), "Unknown component ID %u!" ,
component->identifier);
devlink_flash_update_status_notify(devlink, buf, NULL, 0,
size);
return -EINVAL;
}
/* Once firmware receives the request to start upgrading it responds
* with two messages:
* 1. An ACK that it received the message and possible error code
* indicating that an upgrade is not currently possible.
* 2. A request for the first chunk of data
*
* Setup completions for write before issuing the start message so
* the driver can catch both messages.
*/
cmpl = fbnic_fw_alloc_cmpl(FBNIC_TLV_MSG_ID_FW_WRITE_CHUNK_REQ);
if (!cmpl)
return -ENOMEM;
err = fbnic_mbx_set_cmpl(fbd, cmpl);
if (err)
goto cmpl_free;
devlink_flash_update_timeout_notify(devlink, "Initializing" ,
component_name, 15);
err = fbnic_flash_start(fbd, component);
if (err)
goto err_no_msg;
while (offset < size) {
if (!wait_for_completion_timeout(&cmpl->done, 15 * HZ)) {
err = -ETIMEDOUT;
break ;
}
err = cmpl->result;
if (err)
break ;
/* Verify firmware is requesting the next chunk in the seq. */
if (cmpl->u.fw_update.offset != offset + length) {
err = -EFAULT;
break ;
}
offset = cmpl->u.fw_update.offset;
length = cmpl->u.fw_update.length;
if (length > TLV_MAX_DATA || offset + length > size) {
err = -EFAULT;
break ;
}
devlink_flash_update_status_notify(devlink, "Flashing" ,
component_name,
offset, size);
/* Mailbox will set length to 0 once it receives the finish
* message.
*/
if (!length)
continue ;
reinit_completion(&cmpl->done);
err = fbnic_fw_xmit_fw_write_chunk(fbd, data, offset, length,
0);
if (err)
break ;
}
if (err) {
fbnic_fw_xmit_fw_write_chunk(fbd, NULL, 0, 0, err);
err_no_msg:
snprintf(buf, sizeof (buf), "Mailbox encountered error %d!" ,
err);
devlink_flash_update_status_notify(devlink, buf,
component_name, 0, 0);
}
fbnic_mbx_clear_cmpl(fbd, cmpl);
cmpl_free:
fbnic_fw_put_cmpl(cmpl);
return err;
}
static const struct pldmfw_ops fbnic_pldmfw_ops = {
.match_record = fbnic_pldm_match_record,
.flash_component = fbnic_flash_component,
};
static int
fbnic_devlink_flash_update(struct devlink *devlink,
struct devlink_flash_update_params *params,
struct netlink_ext_ack *extack)
{
struct fbnic_dev *fbd = devlink_priv(devlink);
const struct firmware *fw = params->fw;
struct device *dev = fbd->dev;
struct pldmfw context;
char *err_msg;
int err;
context.ops = &fbnic_pldmfw_ops;
context.dev = dev;
err = pldmfw_flash_image(&context, fw);
if (err) {
switch (err) {
case -EINVAL:
err_msg = "Invalid image" ;
break ;
case -EOPNOTSUPP:
err_msg = "Unsupported image" ;
break ;
case -ENOMEM:
err_msg = "Out of memory" ;
break ;
case -EFAULT:
err_msg = "Invalid header" ;
break ;
case -ENOENT:
err_msg = "No matching record" ;
break ;
case -ENODEV:
err_msg = "No matching device" ;
break ;
case -ETIMEDOUT:
err_msg = "Timed out waiting for reply" ;
break ;
default :
err_msg = "Unknown error" ;
break ;
}
NL_SET_ERR_MSG_FMT_MOD(extack,
"Failed to flash PLDM Image: %s (error: %d)" ,
err_msg, err);
}
return err;
}
static const struct devlink_ops fbnic_devlink_ops = {
.info_get = fbnic_devlink_info_get,
.flash_update = fbnic_devlink_flash_update,
};
void fbnic_devlink_free(struct fbnic_dev *fbd)
{
struct devlink *devlink = priv_to_devlink(fbd);
devlink_free(devlink);
}
struct fbnic_dev *fbnic_devlink_alloc(struct pci_dev *pdev)
{
void __iomem * const *iomap_table;
struct devlink *devlink;
struct fbnic_dev *fbd;
devlink = devlink_alloc(&fbnic_devlink_ops, sizeof (struct fbnic_dev),
&pdev->dev);
if (!devlink)
return NULL;
fbd = devlink_priv(devlink);
pci_set_drvdata(pdev, fbd);
fbd->dev = &pdev->dev;
iomap_table = pcim_iomap_table(pdev);
fbd->uc_addr0 = iomap_table[0];
fbd->uc_addr4 = iomap_table[4];
fbd->dsn = pci_get_dsn(pdev);
fbd->mps = pcie_get_mps(pdev);
fbd->readrq = pcie_get_readrq(pdev);
fbd->mac_addr_boundary = FBNIC_RPC_TCAM_MACDA_DEFAULT_BOUNDARY;
return fbd;
}
void fbnic_devlink_register(struct fbnic_dev *fbd)
{
struct devlink *devlink = priv_to_devlink(fbd);
devlink_register(devlink);
}
void fbnic_devlink_unregister(struct fbnic_dev *fbd)
{
struct devlink *devlink = priv_to_devlink(fbd);
devlink_unregister(devlink);
}
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