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 25 static 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 38 static 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 48 static 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 59 static 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 94 int 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 if (!idev->dev_cmd_regs) { 113 err = -ENXIO; 114 goto err_out; 115 } 116 117 buf_sz = sizeof(idev->dev_cmd_regs->data); 118 119 netdev_dbg(netdev, 120 "downloading firmware - size %d part_sz %d nparts %lu\n", 121 (int)fw->size, buf_sz, DIV_ROUND_UP(fw->size, buf_sz)); 122 123 offset = 0; 124 next_interval = 0; 125 while (offset < fw->size) { 126 if (offset >= next_interval) { 127 devlink_flash_update_status_notify(dl, "Downloading", NULL, 128 offset, fw->size); 129 next_interval = offset + (fw->size / IONIC_FW_INTERVAL_FRACTION); 130 } 131 132 copy_sz = min_t(unsigned int, buf_sz, fw->size - offset); 133 mutex_lock(&ionic->dev_cmd_lock); 134 memcpy_toio(&idev->dev_cmd_regs->data, fw->data + offset, copy_sz); 135 ionic_dev_cmd_firmware_download(idev, 136 offsetof(union ionic_dev_cmd_regs, data), 137 offset, copy_sz); 138 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); 139 mutex_unlock(&ionic->dev_cmd_lock); 140 if (err) { 141 netdev_err(netdev, 142 "download failed offset 0x%x addr 0x%lx len 0x%x\n", 143 offset, offsetof(union ionic_dev_cmd_regs, data), 144 copy_sz); 145 NL_SET_ERR_MSG_MOD(extack, "Segment download failed"); 146 goto err_out; 147 } 148 offset += copy_sz; 149 } 150 devlink_flash_update_status_notify(dl, "Downloading", NULL, 151 fw->size, fw->size); 152 153 devlink_flash_update_timeout_notify(dl, "Installing", NULL, 154 IONIC_FW_INSTALL_TIMEOUT); 155 156 mutex_lock(&ionic->dev_cmd_lock); 157 ionic_dev_cmd_firmware_install(idev); 158 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); 159 ionic_dev_cmd_comp(idev, (union ionic_dev_cmd_comp *)&comp); 160 fw_slot = comp.fw_control.slot; 161 mutex_unlock(&ionic->dev_cmd_lock); 162 if (err) { 163 NL_SET_ERR_MSG_MOD(extack, "Failed to start firmware install"); 164 goto err_out; 165 } 166 167 err = ionic_fw_status_long_wait(ionic, "Installing", 168 IONIC_FW_INSTALL_TIMEOUT, 169 IONIC_FW_INSTALL_STATUS, 170 extack); 171 if (err) 172 goto err_out; 173 174 devlink_flash_update_timeout_notify(dl, "Selecting", NULL, 175 IONIC_FW_SELECT_TIMEOUT); 176 177 mutex_lock(&ionic->dev_cmd_lock); 178 ionic_dev_cmd_firmware_activate(idev, fw_slot); 179 err = ionic_dev_cmd_wait(ionic, DEVCMD_TIMEOUT); 180 mutex_unlock(&ionic->dev_cmd_lock); 181 if (err) { 182 NL_SET_ERR_MSG_MOD(extack, "Failed to start firmware select"); 183 goto err_out; 184 } 185 186 err = ionic_fw_status_long_wait(ionic, "Selecting", 187 IONIC_FW_SELECT_TIMEOUT, 188 IONIC_FW_ACTIVATE_STATUS, 189 extack); 190 if (err) 191 goto err_out; 192 193 netdev_info(netdev, "Firmware update completed\n"); 194 195 err_out: 196 if (err) 197 devlink_flash_update_status_notify(dl, "Flash failed", NULL, 0, 0); 198 else 199 devlink_flash_update_status_notify(dl, "Flash done", NULL, 0, 0); 200 return err; 201 } 202