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// SPDX-License-Identifier: GPL-2.0
/* Copyright(c) 2020 Pensando Systems, Inc */
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/firmware.h>
#include "ionic.h"
#include "ionic_dev.h"
#include "ionic_lif.h"
#include "ionic_devlink.h"
/* The worst case wait for the install activity is about 25 minutes when
* installing a new CPLD, which is very seldom. Normal is about 30-35
* seconds. Since the driver can't tell if a CPLD update will happen we
* set the timeout for the ugly case.
*/
#define IONIC_FW_INSTALL_TIMEOUT (25 * 60)
#define IONIC_FW_SELECT_TIMEOUT 30
/* Number of periodic log updates during fw file download */
#define IONIC_FW_INTERVAL_FRACTION 32
static void ionic_dev_cmd_firmware_download(struct ionic_dev *idev, u64 addr,
u32 offset, u32 length)
{
union ionic_dev_cmd cmd = {
.fw_download.opcode = IONIC_CMD_FW_DOWNLOAD,
.fw_download.offset = offset,
.fw_download.addr = addr,
.fw_download.length = length
};
ionic_dev_cmd_go(idev, &cmd);
}
static void ionic_dev_cmd_firmware_install(struct ionic_dev *idev)
{
union ionic_dev_cmd cmd = {
.fw_control.opcode = IONIC_CMD_FW_CONTROL,
.fw_control.oper = IONIC_FW_INSTALL_ASYNC
};
ionic_dev_cmd_go(idev, &cmd);
}
static void ionic_dev_cmd_firmware_activate(struct ionic_dev *idev, u8 slot)
{
union ionic_dev_cmd cmd = {
.fw_control.opcode = IONIC_CMD_FW_CONTROL,
.fw_control.oper = IONIC_FW_ACTIVATE_ASYNC,
.fw_control.slot = slot
};
ionic_dev_cmd_go(idev, &cmd);
}
static int ionic_fw_status_long_wait(struct ionic *ionic,
const char *label,
unsigned long timeout,
u8 fw_cmd,
struct netlink_ext_ack *extack)
{
union ionic_dev_cmd cmd = {
.fw_control.opcode = IONIC_CMD_FW_CONTROL,
.fw_control.oper = fw_cmd,
};
unsigned long start_time;
unsigned long end_time;
int err;
start_time = jiffies;
end_time = start_time + (timeout * HZ);
do {
mutex_lock(&ionic->dev_cmd_lock);
ionic_dev_cmd_go(&ionic->idev, &cmd);
err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
mutex_unlock(&ionic->dev_cmd_lock);
msleep(20);
} while (time_before(jiffies, end_time) && (err == -EAGAIN || err == -ETIMEDOUT));
if (err == -EAGAIN || err == -ETIMEDOUT) {
NL_SET_ERR_MSG_MOD(extack, "Firmware wait timed out");
dev_err(ionic->dev, "DEV_CMD firmware wait %s timed out\n", label);
} else if (err) {
NL_SET_ERR_MSG_MOD(extack, "Firmware wait failed");
}
return err;
}
int ionic_firmware_update(struct ionic_lif *lif, const char *fw_name,
struct netlink_ext_ack *extack)
{
struct ionic_dev *idev = &lif->ionic->idev;
struct net_device *netdev = lif->netdev;
struct ionic *ionic = lif->ionic;
union ionic_dev_cmd_comp comp;
u32 buf_sz, copy_sz, offset;
const struct firmware *fw;
struct devlink *dl;
int next_interval;
int err = 0;
u8 fw_slot;
netdev_info(netdev, "Installing firmware %s\n", fw_name);
dl = priv_to_devlink(ionic);
devlink_flash_update_begin_notify(dl);
devlink_flash_update_status_notify(dl, "Preparing to flash", NULL, 0, 0);
err = request_firmware(&fw, fw_name, ionic->dev);
if (err) {
NL_SET_ERR_MSG_MOD(extack, "Unable to find firmware file");
goto err_out;
}
buf_sz = sizeof(idev->dev_cmd_regs->data);
netdev_dbg(netdev,
"downloading firmware - size %d part_sz %d nparts %lu\n",
(int)fw->size, buf_sz, DIV_ROUND_UP(fw->size, buf_sz));
offset = 0;
next_interval = 0;
while (offset < fw->size) {
if (offset >= next_interval) {
devlink_flash_update_status_notify(dl, "Downloading", NULL,
offset, fw->size);
next_interval = offset + (fw->size / IONIC_FW_INTERVAL_FRACTION);
}
copy_sz = min_t(unsigned int, buf_sz, fw->size - offset);
mutex_lock(&ionic->dev_cmd_lock);
memcpy_toio(&idev->dev_cmd_regs->data, fw->data + offset, copy_sz);
ionic_dev_cmd_firmware_download(idev,
offsetof(union ionic_dev_cmd_regs, data),
offset, copy_sz);
err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
mutex_unlock(&ionic->dev_cmd_lock);
if (err) {
netdev_err(netdev,
"download failed offset 0x%x addr 0x%lx len 0x%x\n",
offset, offsetof(union ionic_dev_cmd_regs, data),
copy_sz);
NL_SET_ERR_MSG_MOD(extack, "Segment download failed");
goto err_out;
}
offset += copy_sz;
}
devlink_flash_update_status_notify(dl, "Downloading", NULL,
fw->size, fw->size);
devlink_flash_update_timeout_notify(dl, "Installing", NULL,
IONIC_FW_INSTALL_TIMEOUT);
mutex_lock(&ionic->dev_cmd_lock);
ionic_dev_cmd_firmware_install(idev);
err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
ionic_dev_cmd_comp(idev, (union ionic_dev_cmd_comp *)&comp);
fw_slot = comp.fw_control.slot;
mutex_unlock(&ionic->dev_cmd_lock);
if (err) {
NL_SET_ERR_MSG_MOD(extack, "Failed to start firmware install");
goto err_out;
}
err = ionic_fw_status_long_wait(ionic, "Installing",
IONIC_FW_INSTALL_TIMEOUT,
IONIC_FW_INSTALL_STATUS,
extack);
if (err)
goto err_out;
devlink_flash_update_timeout_notify(dl, "Selecting", NULL,
IONIC_FW_SELECT_TIMEOUT);
mutex_lock(&ionic->dev_cmd_lock);
ionic_dev_cmd_firmware_activate(idev, fw_slot);
err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT);
mutex_unlock(&ionic->dev_cmd_lock);
if (err) {
NL_SET_ERR_MSG_MOD(extack, "Failed to start firmware select");
goto err_out;
}
err = ionic_fw_status_long_wait(ionic, "Selecting",
IONIC_FW_SELECT_TIMEOUT,
IONIC_FW_ACTIVATE_STATUS,
extack);
if (err)
goto err_out;
netdev_info(netdev, "Firmware update completed\n");
err_out:
if (err)
devlink_flash_update_status_notify(dl, "Flash failed", NULL, 0, 0);
else
devlink_flash_update_status_notify(dl, "Flash done", NULL, 0, 0);
release_firmware(fw);
devlink_flash_update_end_notify(dl);
return err;
}
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