ionic_fw.c (5581B)
1// SPDX-License-Identifier: GPL-2.0 2/* Copyright(c) 2020 Pensando Systems, Inc */ 3 4#include <linux/kernel.h> 5#include <linux/types.h> 6#include <linux/errno.h> 7#include <linux/firmware.h> 8 9#include "ionic.h" 10#include "ionic_dev.h" 11#include "ionic_lif.h" 12#include "ionic_devlink.h" 13 14/* The worst case wait for the install activity is about 25 minutes when 15 * installing a new CPLD, which is very seldom. Normal is about 30-35 16 * seconds. Since the driver can't tell if a CPLD update will happen we 17 * set the timeout for the ugly case. 18 */ 19#define IONIC_FW_INSTALL_TIMEOUT (25 * 60) 20#define IONIC_FW_SELECT_TIMEOUT 30 21 22/* Number of periodic log updates during fw file download */ 23#define IONIC_FW_INTERVAL_FRACTION 32 24 25static void ionic_dev_cmd_firmware_download(struct ionic_dev *idev, u64 addr, 26 u32 offset, u32 length) 27{ 28 union ionic_dev_cmd cmd = { 29 .fw_download.opcode = IONIC_CMD_FW_DOWNLOAD, 30 .fw_download.offset = cpu_to_le32(offset), 31 .fw_download.addr = cpu_to_le64(addr), 32 .fw_download.length = cpu_to_le32(length), 33 }; 34 35 ionic_dev_cmd_go(idev, &cmd); 36} 37 38static void ionic_dev_cmd_firmware_install(struct ionic_dev *idev) 39{ 40 union ionic_dev_cmd cmd = { 41 .fw_control.opcode = IONIC_CMD_FW_CONTROL, 42 .fw_control.oper = IONIC_FW_INSTALL_ASYNC 43 }; 44 45 ionic_dev_cmd_go(idev, &cmd); 46} 47 48static void ionic_dev_cmd_firmware_activate(struct ionic_dev *idev, u8 slot) 49{ 50 union ionic_dev_cmd cmd = { 51 .fw_control.opcode = IONIC_CMD_FW_CONTROL, 52 .fw_control.oper = IONIC_FW_ACTIVATE_ASYNC, 53 .fw_control.slot = slot 54 }; 55 56 ionic_dev_cmd_go(idev, &cmd); 57} 58 59static int ionic_fw_status_long_wait(struct ionic *ionic, 60 const char *label, 61 unsigned long timeout, 62 u8 fw_cmd, 63 struct netlink_ext_ack *extack) 64{ 65 union ionic_dev_cmd cmd = { 66 .fw_control.opcode = IONIC_CMD_FW_CONTROL, 67 .fw_control.oper = fw_cmd, 68 }; 69 unsigned long start_time; 70 unsigned long end_time; 71 int err; 72 73 start_time = jiffies; 74 end_time = start_time + (timeout * HZ); 75 do { 76 mutex_lock(&ionic->dev_cmd_lock); 77 ionic_dev_cmd_go(&ionic->idev, &cmd); 78 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); 79 mutex_unlock(&ionic->dev_cmd_lock); 80 81 msleep(20); 82 } while (time_before(jiffies, end_time) && (err == -EAGAIN || err == -ETIMEDOUT)); 83 84 if (err == -EAGAIN || err == -ETIMEDOUT) { 85 NL_SET_ERR_MSG_MOD(extack, "Firmware wait timed out"); 86 dev_err(ionic->dev, "DEV_CMD firmware wait %s timed out\n", label); 87 } else if (err) { 88 NL_SET_ERR_MSG_MOD(extack, "Firmware wait failed"); 89 } 90 91 return err; 92} 93 94int ionic_firmware_update(struct ionic_lif *lif, const struct firmware *fw, 95 struct netlink_ext_ack *extack) 96{ 97 struct ionic_dev *idev = &lif->ionic->idev; 98 struct net_device *netdev = lif->netdev; 99 struct ionic *ionic = lif->ionic; 100 union ionic_dev_cmd_comp comp; 101 u32 buf_sz, copy_sz, offset; 102 struct devlink *dl; 103 int next_interval; 104 int err = 0; 105 u8 fw_slot; 106 107 netdev_info(netdev, "Installing firmware\n"); 108 109 dl = priv_to_devlink(ionic); 110 devlink_flash_update_status_notify(dl, "Preparing to flash", NULL, 0, 0); 111 112 buf_sz = sizeof(idev->dev_cmd_regs->data); 113 114 netdev_dbg(netdev, 115 "downloading firmware - size %d part_sz %d nparts %lu\n", 116 (int)fw->size, buf_sz, DIV_ROUND_UP(fw->size, buf_sz)); 117 118 offset = 0; 119 next_interval = 0; 120 while (offset < fw->size) { 121 if (offset >= next_interval) { 122 devlink_flash_update_status_notify(dl, "Downloading", NULL, 123 offset, fw->size); 124 next_interval = offset + (fw->size / IONIC_FW_INTERVAL_FRACTION); 125 } 126 127 copy_sz = min_t(unsigned int, buf_sz, fw->size - offset); 128 mutex_lock(&ionic->dev_cmd_lock); 129 memcpy_toio(&idev->dev_cmd_regs->data, fw->data + offset, copy_sz); 130 ionic_dev_cmd_firmware_download(idev, 131 offsetof(union ionic_dev_cmd_regs, data), 132 offset, copy_sz); 133 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); 134 mutex_unlock(&ionic->dev_cmd_lock); 135 if (err) { 136 netdev_err(netdev, 137 "download failed offset 0x%x addr 0x%lx len 0x%x\n", 138 offset, offsetof(union ionic_dev_cmd_regs, data), 139 copy_sz); 140 NL_SET_ERR_MSG_MOD(extack, "Segment download failed"); 141 goto err_out; 142 } 143 offset += copy_sz; 144 } 145 devlink_flash_update_status_notify(dl, "Downloading", NULL, 146 fw->size, fw->size); 147 148 devlink_flash_update_timeout_notify(dl, "Installing", NULL, 149 IONIC_FW_INSTALL_TIMEOUT); 150 151 mutex_lock(&ionic->dev_cmd_lock); 152 ionic_dev_cmd_firmware_install(idev); 153 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); 154 ionic_dev_cmd_comp(idev, (union ionic_dev_cmd_comp *)&comp); 155 fw_slot = comp.fw_control.slot; 156 mutex_unlock(&ionic->dev_cmd_lock); 157 if (err) { 158 NL_SET_ERR_MSG_MOD(extack, "Failed to start firmware install"); 159 goto err_out; 160 } 161 162 err = ionic_fw_status_long_wait(ionic, "Installing", 163 IONIC_FW_INSTALL_TIMEOUT, 164 IONIC_FW_INSTALL_STATUS, 165 extack); 166 if (err) 167 goto err_out; 168 169 devlink_flash_update_timeout_notify(dl, "Selecting", NULL, 170 IONIC_FW_SELECT_TIMEOUT); 171 172 mutex_lock(&ionic->dev_cmd_lock); 173 ionic_dev_cmd_firmware_activate(idev, fw_slot); 174 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); 175 mutex_unlock(&ionic->dev_cmd_lock); 176 if (err) { 177 NL_SET_ERR_MSG_MOD(extack, "Failed to start firmware select"); 178 goto err_out; 179 } 180 181 err = ionic_fw_status_long_wait(ionic, "Selecting", 182 IONIC_FW_SELECT_TIMEOUT, 183 IONIC_FW_ACTIVATE_STATUS, 184 extack); 185 if (err) 186 goto err_out; 187 188 netdev_info(netdev, "Firmware update completed\n"); 189 190err_out: 191 if (err) 192 devlink_flash_update_status_notify(dl, "Flash failed", NULL, 0, 0); 193 else 194 devlink_flash_update_status_notify(dl, "Flash done", NULL, 0, 0); 195 return err; 196}