@@ -8,4 +8,4 @@ ethtool_nl-y := netlink.o bitset.o strset.o linkinfo.o linkmodes.o rss.o \
linkstate.o debug.o wol.o features.o privflags.o rings.o \
channels.o coalesce.o pause.o eee.o tsinfo.o cabletest.o \
tunnels.o fec.o eeprom.o stats.o phc_vclocks.o mm.o \
- module.o cmis_cdb.o pse-pd.o plca.o mm.o
+ module.o cmis_fw_update.o cmis_cdb.o pse-pd.o plca.o mm.o
@@ -20,6 +20,12 @@ struct ethtool_cmis_cdb {
enum ethtool_cmis_cdb_cmd_id {
ETHTOOL_CMIS_CDB_CMD_QUERY_STATUS = 0x0000,
ETHTOOL_CMIS_CDB_CMD_MODULE_FEATURES = 0x0040,
+ ETHTOOL_CMIS_CDB_CMD_FW_MANAGMENT_FEATURES = 0x0041,
+ ETHTOOL_CMIS_CDB_CMD_START_FW_DOWNLOAD = 0x0101,
+ ETHTOOL_CMIS_CDB_CMD_WRITE_FW_BLOCK_LPL = 0x0103,
+ ETHTOOL_CMIS_CDB_CMD_COMPLETE_FW_DOWNLOAD = 0x0107,
+ ETHTOOL_CMIS_CDB_CMD_RUN_FW_IMAGE = 0x0109,
+ ETHTOOL_CMIS_CDB_CMD_COMMIT_FW_IMAGE = 0x010A,
};
/**
@@ -47,6 +53,7 @@ struct ethtool_cmis_cdb_request {
#define CDB_F_COMPLETION_VALID BIT(0)
#define CDB_F_STATUS_VALID BIT(1)
+#define CDB_F_MODULE_STATE_VALID BIT(2)
/**
* struct ethtool_cmis_cdb_cmd_args - CDB commands execution arguments
new file mode 100644
@@ -0,0 +1,371 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+#include <linux/ethtool.h>
+#include <linux/firmware.h>
+
+#include "common.h"
+#include "module_fw.h"
+#include "cmis.h"
+
+struct cmis_fw_update_fw_mng_features {
+ u8 start_cmd_payload_size;
+ u16 max_duration_start;
+ u16 max_duration_write;
+ u16 max_duration_complete;
+};
+
+/* See section 9.4.2 "CMD 0041h: Firmware Management Features" in CMIS standard
+ * revision 5.2.
+ * struct cmis_cdb_fw_mng_features_rpl is a structured layout of the flat
+ * array, ethtool_cmis_cdb_rpl::payload.
+ */
+struct cmis_cdb_fw_mng_features_rpl {
+ u8 resv1;
+ u8 resv2;
+ u8 start_cmd_payload_size;
+ u8 resv3;
+ u8 read_write_len_ext;
+ u8 write_mechanism;
+ u8 resv4;
+ u8 resv5;
+ __be16 max_duration_start;
+ __be16 resv6;
+ __be16 max_duration_write;
+ __be16 max_duration_complete;
+ __be16 resv7;
+};
+
+#define CMIS_CDB_FW_WRITE_MECHANISM_LPL 0x01
+
+static int
+cmis_fw_update_fw_mng_features_get(struct ethtool_cmis_cdb *cdb,
+ struct net_device *dev,
+ struct cmis_fw_update_fw_mng_features *fw_mng)
+{
+ struct cmis_cdb_fw_mng_features_rpl *rpl;
+ struct ethtool_cmis_cdb_cmd_args args;
+ u8 flags = CDB_F_STATUS_VALID;
+ int err;
+
+ ethtool_cmis_cdb_check_completion_flag(cdb->cmis_rev, &flags);
+ ethtool_cmis_cdb_compose_args(&args,
+ ETHTOOL_CMIS_CDB_CMD_FW_MANAGMENT_FEATURES,
+ NULL, 0, cdb->max_completion_time,
+ cdb->read_write_len_ext, sizeof(*rpl),
+ flags);
+
+ err = ethtool_cmis_cdb_execute_cmd(dev, &args);
+ if (err < 0) {
+ ethnl_module_fw_flash_ntf_err(dev,
+ "FW Management Features command failed");
+ return err;
+ }
+
+ rpl = (struct cmis_cdb_fw_mng_features_rpl *)args.req.payload;
+ if (!(rpl->write_mechanism & CMIS_CDB_FW_WRITE_MECHANISM_LPL)) {
+ ethnl_module_fw_flash_ntf_err(dev,
+ "Write LPL is not supported");
+ return -EOPNOTSUPP;
+ }
+
+ /* Above, we used read_write_len_ext that we got from CDB
+ * advertisement. Update it with the value that we got from module
+ * features query, which is specific for Firmware Management Commands
+ * (IDs 0100h-01FFh).
+ */
+ cdb->read_write_len_ext = rpl->read_write_len_ext;
+ fw_mng->start_cmd_payload_size = rpl->start_cmd_payload_size;
+ fw_mng->max_duration_start = be16_to_cpu(rpl->max_duration_start);
+ fw_mng->max_duration_write = be16_to_cpu(rpl->max_duration_write);
+ fw_mng->max_duration_complete = be16_to_cpu(rpl->max_duration_complete);
+
+ return 0;
+}
+
+/* See section 9.7.2 "CMD 0101h: Start Firmware Download" in CMIS standard
+ * revision 5.2.
+ * struct cmis_cdb_start_fw_download_pl is a structured layout of the
+ * flat array, ethtool_cmis_cdb_request::payload.
+ */
+struct cmis_cdb_start_fw_download_pl {
+ __struct_group(cmis_cdb_start_fw_download_pl_h, head, /* no attrs */,
+ __be32 image_size;
+ __be32 resv1;
+ );
+ u8 vendor_data[ETHTOOL_CMIS_CDB_LPL_MAX_PL_LENGTH -
+ sizeof(struct cmis_cdb_start_fw_download_pl_h)];
+};
+
+static int
+cmis_fw_update_start_download(struct ethtool_cmis_cdb *cdb,
+ struct ethtool_module_fw_flash *module_fw,
+ struct cmis_fw_update_fw_mng_features *fw_mng)
+{
+ u8 vendor_data_size = fw_mng->start_cmd_payload_size;
+ struct cmis_cdb_start_fw_download_pl pl = {};
+ struct ethtool_cmis_cdb_cmd_args args;
+ u8 lpl_len;
+ int err;
+
+ pl.image_size = cpu_to_be32(module_fw->fw->size);
+ memcpy(pl.vendor_data, module_fw->fw->data, vendor_data_size);
+
+ lpl_len = offsetof(struct cmis_cdb_start_fw_download_pl,
+ vendor_data[vendor_data_size]);
+
+ ethtool_cmis_cdb_compose_args(&args,
+ ETHTOOL_CMIS_CDB_CMD_START_FW_DOWNLOAD,
+ (u8 *)&pl, lpl_len,
+ fw_mng->max_duration_start,
+ cdb->read_write_len_ext, 0,
+ CDB_F_COMPLETION_VALID | CDB_F_STATUS_VALID);
+
+ err = ethtool_cmis_cdb_execute_cmd(module_fw->dev, &args);
+ if (err < 0)
+ ethnl_module_fw_flash_ntf_err(module_fw->dev,
+ "Start FW download command failed");
+
+ return err;
+}
+
+/* See section 9.7.4 "CMD 0103h: Write Firmware Block LPL" in CMIS standard
+ * revision 5.2.
+ * struct cmis_cdb_write_fw_block_lpl_pl is a structured layout of the
+ * flat array, ethtool_cmis_cdb_request::payload.
+ */
+struct cmis_cdb_write_fw_block_lpl_pl {
+ __be32 block_address;
+ u8 fw_block[ETHTOOL_CMIS_CDB_LPL_MAX_PL_LENGTH - sizeof(__be32)];
+};
+
+static int
+cmis_fw_update_write_image(struct ethtool_cmis_cdb *cdb,
+ struct ethtool_module_fw_flash *module_fw,
+ struct cmis_fw_update_fw_mng_features *fw_mng)
+{
+ u8 start = fw_mng->start_cmd_payload_size;
+ u32 image_size = module_fw->fw->size;
+ u32 offset, block_size, lpl_len;
+ int err;
+
+ lpl_len = ethtool_cmis_get_max_payload_size(cdb->read_write_len_ext);
+ block_size =
+ lpl_len - sizeof_field(struct cmis_cdb_write_fw_block_lpl_pl,
+ block_address);
+
+ for (offset = start; offset < image_size; offset += block_size) {
+ struct cmis_cdb_write_fw_block_lpl_pl pl = {
+ .block_address = cpu_to_be32(offset - start),
+ };
+ struct ethtool_cmis_cdb_cmd_args args;
+
+ ethnl_module_fw_flash_ntf_in_progress(module_fw->dev,
+ offset - start,
+ image_size);
+
+ memcpy(pl.fw_block, &module_fw->fw->data[offset],
+ min(block_size, image_size - offset));
+
+ ethtool_cmis_cdb_compose_args(&args,
+ ETHTOOL_CMIS_CDB_CMD_WRITE_FW_BLOCK_LPL,
+ (u8 *)&pl,
+ min_t(u32, lpl_len, sizeof(pl)),
+ fw_mng->max_duration_write,
+ cdb->read_write_len_ext, 0,
+ CDB_F_COMPLETION_VALID | CDB_F_STATUS_VALID);
+
+ err = ethtool_cmis_cdb_execute_cmd(module_fw->dev, &args);
+ if (err < 0) {
+ ethnl_module_fw_flash_ntf_err(module_fw->dev,
+ "Write FW block LPL command failed");
+ return err;
+ }
+ }
+
+ return 0;
+}
+
+static int
+cmis_fw_update_complete_download(struct ethtool_cmis_cdb *cdb,
+ struct net_device *dev,
+ struct cmis_fw_update_fw_mng_features *fw_mng)
+{
+ struct ethtool_cmis_cdb_cmd_args args;
+ int err;
+
+ ethtool_cmis_cdb_compose_args(&args,
+ ETHTOOL_CMIS_CDB_CMD_COMPLETE_FW_DOWNLOAD,
+ NULL, 0, fw_mng->max_duration_complete,
+ cdb->read_write_len_ext, 0,
+ CDB_F_COMPLETION_VALID | CDB_F_STATUS_VALID);
+
+ err = ethtool_cmis_cdb_execute_cmd(dev, &args);
+ if (err < 0)
+ ethnl_module_fw_flash_ntf_err(dev,
+ "Complete FW download command failed");
+
+ return err;
+}
+
+static int
+cmis_fw_update_download_image(struct ethtool_cmis_cdb *cdb,
+ struct ethtool_module_fw_flash *module_fw,
+ struct cmis_fw_update_fw_mng_features *fw_mng)
+{
+ int err;
+
+ err = cmis_fw_update_start_download(cdb, module_fw, fw_mng);
+ if (err < 0)
+ return err;
+
+ err = cmis_fw_update_write_image(cdb, module_fw, fw_mng);
+ if (err < 0)
+ return err;
+
+ err = cmis_fw_update_complete_download(cdb, module_fw->dev, fw_mng);
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+enum {
+ CMIS_MODULE_LOW_PWR = 1,
+ CMIS_MODULE_READY = 3,
+};
+
+static bool module_is_ready(u8 data)
+{
+ u8 state = (data >> 1) & 7;
+
+ return state == CMIS_MODULE_READY || state == CMIS_MODULE_LOW_PWR;
+}
+
+#define CMIS_MODULE_READY_MAX_DURATION_USEC 1000
+#define CMIS_MODULE_STATE_OFFSET 3
+
+static int
+cmis_fw_update_wait_for_module_state(struct ethtool_module_fw_flash *module_fw,
+ u8 flags)
+{
+ return ethtool_cmis_wait_for_cond(module_fw->dev, flags,
+ CDB_F_MODULE_STATE_VALID,
+ CMIS_MODULE_READY_MAX_DURATION_USEC,
+ CMIS_MODULE_STATE_OFFSET,
+ module_is_ready, NULL);
+}
+
+/* See section 9.7.10 "CMD 0109h: Run Firmware Image" in CMIS standard
+ * revision 5.2.
+ * struct cmis_cdb_run_fw_image_pl is a structured layout of the flat
+ * array, ethtool_cmis_cdb_request::payload.
+ */
+struct cmis_cdb_run_fw_image_pl {
+ u8 resv1;
+ u8 image_to_run;
+ u16 delay_to_reset;
+};
+
+static int cmis_fw_update_run_image(struct ethtool_cmis_cdb *cdb,
+ struct ethtool_module_fw_flash *module_fw)
+{
+ struct cmis_cdb_run_fw_image_pl pl = {0};
+ struct ethtool_cmis_cdb_cmd_args args;
+ int err;
+
+ ethtool_cmis_cdb_compose_args(&args, ETHTOOL_CMIS_CDB_CMD_RUN_FW_IMAGE,
+ (u8 *)&pl, sizeof(pl),
+ cdb->max_completion_time,
+ cdb->read_write_len_ext, 0,
+ CDB_F_MODULE_STATE_VALID);
+
+ err = ethtool_cmis_cdb_execute_cmd(module_fw->dev, &args);
+ if (err < 0) {
+ ethnl_module_fw_flash_ntf_err(module_fw->dev,
+ "Run image command failed");
+ return err;
+ }
+
+ return cmis_fw_update_wait_for_module_state(module_fw, args.flags);
+}
+
+static int
+cmis_fw_update_commit_image(struct ethtool_cmis_cdb *cdb,
+ struct ethtool_module_fw_flash *module_fw)
+{
+ struct ethtool_cmis_cdb_cmd_args args;
+ int err;
+
+ ethtool_cmis_cdb_compose_args(&args,
+ ETHTOOL_CMIS_CDB_CMD_COMMIT_FW_IMAGE,
+ NULL, 0, cdb->max_completion_time,
+ cdb->read_write_len_ext, 0,
+ CDB_F_COMPLETION_VALID | CDB_F_STATUS_VALID);
+
+ err = ethtool_cmis_cdb_execute_cmd(module_fw->dev, &args);
+ if (err < 0)
+ ethnl_module_fw_flash_ntf_err(module_fw->dev,
+ "Commit image command failed");
+
+ return err;
+}
+
+void ethtool_cmis_fw_update(struct work_struct *work)
+{
+ struct cmis_fw_update_fw_mng_features fw_mng = {0};
+ struct ethtool_module_fw_flash *module_fw;
+ struct ethtool_cmis_cdb *cdb;
+ int err;
+
+ module_fw = container_of(work, struct ethtool_module_fw_flash, work);
+
+ cdb = ethtool_cmis_cdb_init(module_fw->dev, &module_fw->params);
+ if (IS_ERR(cdb))
+ goto err_cdb_init;
+
+ ethnl_module_fw_flash_ntf_start(module_fw->dev);
+
+ err = cmis_fw_update_fw_mng_features_get(cdb, module_fw->dev, &fw_mng);
+ if (err < 0)
+ goto err_fw_mng_features_get;
+
+ err = cmis_fw_update_download_image(cdb, module_fw, &fw_mng);
+ if (err < 0)
+ goto err_download_image;
+
+ err = cmis_fw_update_run_image(cdb, module_fw);
+ if (err < 0)
+ goto err_run_image;
+
+ /* The CDB command "Run Firmware Image" resets the firmware, so the new
+ * one might have different settings.
+ * Free the old CDB instance, and init a new one.
+ */
+ ethtool_cmis_cdb_fini(cdb);
+
+ cdb = ethtool_cmis_cdb_init(module_fw->dev, &module_fw->params);
+ if (IS_ERR(cdb))
+ goto err_cdb_init;
+
+ err = cmis_fw_update_commit_image(cdb, module_fw);
+ if (err < 0)
+ goto err_commit_image;
+
+ ethnl_module_fw_flash_ntf_complete(module_fw->dev);
+ ethtool_cmis_cdb_fini(cdb);
+ goto out;
+
+err_commit_image:
+err_run_image:
+err_download_image:
+err_fw_mng_features_get:
+ ethtool_cmis_cdb_fini(cdb);
+err_cdb_init:
+ ethnl_module_fw_flash_ntf_err(module_fw->dev, NULL);
+out:
+ netdev_put(module_fw->dev, &module_fw->dev_tracker);
+ module_fw->dev->module_fw_flash_in_progress = false;
+ release_firmware(module_fw->fw);
+ kfree(module_fw);
+}
+EXPORT_SYMBOL_GPL(ethtool_cmis_fw_update);
@@ -9,6 +9,8 @@ void ethnl_module_fw_flash_ntf_complete(struct net_device *dev);
void ethnl_module_fw_flash_ntf_in_progress(struct net_device *dev, u64 done,
u64 total);
+void ethtool_cmis_fw_update(struct work_struct *work);
+
/**
* struct ethtool_module_fw_flash_params - module firmware flashing parameters
* @file_name: Firmware image file name.
@@ -20,3 +22,19 @@ struct ethtool_module_fw_flash_params {
u32 password;
u8 password_valid:1;
};
+
+/**
+ * struct ethtool_module_fw_flash - module firmware flashing
+ * @dev: Pointer to the net_device to be flashed.
+ * @dev_tracker: Refcount tracker for @dev.
+ * @params: Module firmware flashing parameters.
+ * @work: The flashing firmware work.
+ * @fw: Firmware to flash.
+ */
+struct ethtool_module_fw_flash {
+ struct net_device *dev;
+ netdevice_tracker dev_tracker;
+ struct ethtool_module_fw_flash_params params;
+ struct work_struct work;
+ const struct firmware *fw;
+};