| // SPDX-License-Identifier: GPL-2.0-or-later |
| /* |
| * Copyright (C) 2008, cozybit Inc. |
| * Copyright (C) 2003-2006, Marvell International Ltd. |
| */ |
| #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| |
| #include <linux/hardirq.h> |
| #include <linux/slab.h> |
| #include <linux/export.h> |
| |
| #include "libertas_tf.h" |
| |
| static const struct channel_range channel_ranges[] = { |
| { LBTF_REGDOMAIN_US, 1, 12 }, |
| { LBTF_REGDOMAIN_CA, 1, 12 }, |
| { LBTF_REGDOMAIN_EU, 1, 14 }, |
| { LBTF_REGDOMAIN_JP, 1, 14 }, |
| { LBTF_REGDOMAIN_SP, 1, 14 }, |
| { LBTF_REGDOMAIN_FR, 1, 14 }, |
| }; |
| |
| static u16 lbtf_region_code_to_index[MRVDRV_MAX_REGION_CODE] = |
| { |
| LBTF_REGDOMAIN_US, LBTF_REGDOMAIN_CA, LBTF_REGDOMAIN_EU, |
| LBTF_REGDOMAIN_SP, LBTF_REGDOMAIN_FR, LBTF_REGDOMAIN_JP, |
| }; |
| |
| static struct cmd_ctrl_node *lbtf_get_cmd_ctrl_node(struct lbtf_private *priv); |
| |
| |
| /** |
| * lbtf_cmd_copyback - Simple callback that copies response back into command |
| * |
| * @priv A pointer to struct lbtf_private structure |
| * @extra A pointer to the original command structure for which |
| * 'resp' is a response |
| * @resp A pointer to the command response |
| * |
| * Returns: 0 on success, error on failure |
| */ |
| int lbtf_cmd_copyback(struct lbtf_private *priv, unsigned long extra, |
| struct cmd_header *resp) |
| { |
| struct cmd_header *buf = (void *)extra; |
| uint16_t copy_len; |
| |
| copy_len = min(le16_to_cpu(buf->size), le16_to_cpu(resp->size)); |
| memcpy(buf, resp, copy_len); |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(lbtf_cmd_copyback); |
| |
| #define CHAN_TO_IDX(chan) ((chan) - 1) |
| |
| static void lbtf_geo_init(struct lbtf_private *priv) |
| { |
| const struct channel_range *range = channel_ranges; |
| u8 ch; |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(channel_ranges); i++) |
| if (channel_ranges[i].regdomain == priv->regioncode) { |
| range = &channel_ranges[i]; |
| break; |
| } |
| |
| for (ch = priv->range.start; ch < priv->range.end; ch++) |
| priv->channels[CHAN_TO_IDX(ch)].flags = 0; |
| } |
| |
| /** |
| * lbtf_update_hw_spec: Updates the hardware details. |
| * |
| * @priv A pointer to struct lbtf_private structure |
| * |
| * Returns: 0 on success, error on failure |
| */ |
| int lbtf_update_hw_spec(struct lbtf_private *priv) |
| { |
| struct cmd_ds_get_hw_spec cmd; |
| int ret = -1; |
| u32 i; |
| |
| lbtf_deb_enter(LBTF_DEB_CMD); |
| |
| memset(&cmd, 0, sizeof(cmd)); |
| cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
| memcpy(cmd.permanentaddr, priv->current_addr, ETH_ALEN); |
| ret = lbtf_cmd_with_response(priv, CMD_GET_HW_SPEC, &cmd); |
| if (ret) |
| goto out; |
| |
| priv->fwcapinfo = le32_to_cpu(cmd.fwcapinfo); |
| |
| /* The firmware release is in an interesting format: the patch |
| * level is in the most significant nibble ... so fix that: */ |
| priv->fwrelease = le32_to_cpu(cmd.fwrelease); |
| priv->fwrelease = (priv->fwrelease << 8) | |
| (priv->fwrelease >> 24 & 0xff); |
| |
| printk(KERN_INFO "libertastf: %pM, fw %u.%u.%up%u, cap 0x%08x\n", |
| cmd.permanentaddr, |
| priv->fwrelease >> 24 & 0xff, |
| priv->fwrelease >> 16 & 0xff, |
| priv->fwrelease >> 8 & 0xff, |
| priv->fwrelease & 0xff, |
| priv->fwcapinfo); |
| lbtf_deb_cmd("GET_HW_SPEC: hardware interface 0x%x, hardware spec 0x%04x\n", |
| cmd.hwifversion, cmd.version); |
| |
| /* Clamp region code to 8-bit since FW spec indicates that it should |
| * only ever be 8-bit, even though the field size is 16-bit. Some |
| * firmware returns non-zero high 8 bits here. |
| */ |
| priv->regioncode = le16_to_cpu(cmd.regioncode) & 0xFF; |
| |
| for (i = 0; i < MRVDRV_MAX_REGION_CODE; i++) { |
| /* use the region code to search for the index */ |
| if (priv->regioncode == lbtf_region_code_to_index[i]) |
| break; |
| } |
| |
| /* if it's unidentified region code, use the default (USA) */ |
| if (i >= MRVDRV_MAX_REGION_CODE) { |
| priv->regioncode = 0x10; |
| pr_info("unidentified region code; using the default (USA)\n"); |
| } |
| |
| if (priv->current_addr[0] == 0xff) |
| memmove(priv->current_addr, cmd.permanentaddr, ETH_ALEN); |
| |
| SET_IEEE80211_PERM_ADDR(priv->hw, priv->current_addr); |
| |
| lbtf_geo_init(priv); |
| out: |
| lbtf_deb_leave(LBTF_DEB_CMD); |
| return ret; |
| } |
| |
| /** |
| * lbtf_set_channel: Set the radio channel |
| * |
| * @priv A pointer to struct lbtf_private structure |
| * @channel The desired channel, or 0 to clear a locked channel |
| * |
| * Returns: 0 on success, error on failure |
| */ |
| int lbtf_set_channel(struct lbtf_private *priv, u8 channel) |
| { |
| int ret = 0; |
| struct cmd_ds_802_11_rf_channel cmd; |
| |
| lbtf_deb_enter(LBTF_DEB_CMD); |
| |
| cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
| cmd.action = cpu_to_le16(CMD_OPT_802_11_RF_CHANNEL_SET); |
| cmd.channel = cpu_to_le16(channel); |
| |
| ret = lbtf_cmd_with_response(priv, CMD_802_11_RF_CHANNEL, &cmd); |
| lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", ret); |
| return ret; |
| } |
| |
| int lbtf_beacon_set(struct lbtf_private *priv, struct sk_buff *beacon) |
| { |
| struct cmd_ds_802_11_beacon_set cmd; |
| int size; |
| |
| lbtf_deb_enter(LBTF_DEB_CMD); |
| |
| if (beacon->len > MRVL_MAX_BCN_SIZE) { |
| lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", -1); |
| return -1; |
| } |
| size = sizeof(cmd) - sizeof(cmd.beacon) + beacon->len; |
| cmd.hdr.size = cpu_to_le16(size); |
| cmd.len = cpu_to_le16(beacon->len); |
| memcpy(cmd.beacon, (u8 *) beacon->data, beacon->len); |
| |
| lbtf_cmd_async(priv, CMD_802_11_BEACON_SET, &cmd.hdr, size); |
| |
| lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", 0); |
| return 0; |
| } |
| |
| int lbtf_beacon_ctrl(struct lbtf_private *priv, bool beacon_enable, |
| int beacon_int) |
| { |
| struct cmd_ds_802_11_beacon_control cmd; |
| lbtf_deb_enter(LBTF_DEB_CMD); |
| |
| cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
| cmd.action = cpu_to_le16(CMD_ACT_SET); |
| cmd.beacon_enable = cpu_to_le16(beacon_enable); |
| cmd.beacon_period = cpu_to_le16(beacon_int); |
| |
| lbtf_cmd_async(priv, CMD_802_11_BEACON_CTRL, &cmd.hdr, sizeof(cmd)); |
| |
| lbtf_deb_leave(LBTF_DEB_CMD); |
| return 0; |
| } |
| |
| static void lbtf_queue_cmd(struct lbtf_private *priv, |
| struct cmd_ctrl_node *cmdnode) |
| { |
| unsigned long flags; |
| lbtf_deb_enter(LBTF_DEB_HOST); |
| |
| if (!cmdnode) { |
| lbtf_deb_host("QUEUE_CMD: cmdnode is NULL\n"); |
| goto qcmd_done; |
| } |
| |
| if (!cmdnode->cmdbuf->size) { |
| lbtf_deb_host("DNLD_CMD: cmd size is zero\n"); |
| goto qcmd_done; |
| } |
| |
| cmdnode->result = 0; |
| spin_lock_irqsave(&priv->driver_lock, flags); |
| list_add_tail(&cmdnode->list, &priv->cmdpendingq); |
| spin_unlock_irqrestore(&priv->driver_lock, flags); |
| |
| lbtf_deb_host("QUEUE_CMD: inserted command 0x%04x into cmdpendingq\n", |
| le16_to_cpu(cmdnode->cmdbuf->command)); |
| |
| qcmd_done: |
| lbtf_deb_leave(LBTF_DEB_HOST); |
| } |
| |
| static void lbtf_submit_command(struct lbtf_private *priv, |
| struct cmd_ctrl_node *cmdnode) |
| { |
| unsigned long flags; |
| struct cmd_header *cmd; |
| uint16_t cmdsize; |
| uint16_t command; |
| int timeo = 5 * HZ; |
| int ret; |
| |
| lbtf_deb_enter(LBTF_DEB_HOST); |
| |
| cmd = cmdnode->cmdbuf; |
| |
| spin_lock_irqsave(&priv->driver_lock, flags); |
| priv->cur_cmd = cmdnode; |
| cmdsize = le16_to_cpu(cmd->size); |
| command = le16_to_cpu(cmd->command); |
| |
| lbtf_deb_cmd("DNLD_CMD: command 0x%04x, seq %d, size %d\n", |
| command, le16_to_cpu(cmd->seqnum), cmdsize); |
| lbtf_deb_hex(LBTF_DEB_CMD, "DNLD_CMD", (void *) cmdnode->cmdbuf, cmdsize); |
| |
| ret = priv->ops->hw_host_to_card(priv, MVMS_CMD, (u8 *)cmd, cmdsize); |
| spin_unlock_irqrestore(&priv->driver_lock, flags); |
| |
| if (ret) { |
| pr_info("DNLD_CMD: hw_host_to_card failed: %d\n", ret); |
| /* Let the timer kick in and retry, and potentially reset |
| the whole thing if the condition persists */ |
| timeo = HZ; |
| } |
| |
| /* Setup the timer after transmit command */ |
| mod_timer(&priv->command_timer, jiffies + timeo); |
| |
| lbtf_deb_leave(LBTF_DEB_HOST); |
| } |
| |
| /** |
| * This function inserts command node to cmdfreeq |
| * after cleans it. Requires priv->driver_lock held. |
| */ |
| static void __lbtf_cleanup_and_insert_cmd(struct lbtf_private *priv, |
| struct cmd_ctrl_node *cmdnode) |
| { |
| lbtf_deb_enter(LBTF_DEB_HOST); |
| |
| if (!cmdnode) |
| goto cl_ins_out; |
| |
| cmdnode->callback = NULL; |
| cmdnode->callback_arg = 0; |
| |
| memset(cmdnode->cmdbuf, 0, LBS_CMD_BUFFER_SIZE); |
| |
| list_add_tail(&cmdnode->list, &priv->cmdfreeq); |
| |
| cl_ins_out: |
| lbtf_deb_leave(LBTF_DEB_HOST); |
| } |
| |
| static void lbtf_cleanup_and_insert_cmd(struct lbtf_private *priv, |
| struct cmd_ctrl_node *ptempcmd) |
| { |
| unsigned long flags; |
| |
| spin_lock_irqsave(&priv->driver_lock, flags); |
| __lbtf_cleanup_and_insert_cmd(priv, ptempcmd); |
| spin_unlock_irqrestore(&priv->driver_lock, flags); |
| } |
| |
| void lbtf_complete_command(struct lbtf_private *priv, struct cmd_ctrl_node *cmd, |
| int result) |
| { |
| cmd->result = result; |
| cmd->cmdwaitqwoken = 1; |
| wake_up_interruptible(&cmd->cmdwait_q); |
| |
| if (!cmd->callback) |
| __lbtf_cleanup_and_insert_cmd(priv, cmd); |
| priv->cur_cmd = NULL; |
| } |
| |
| int lbtf_cmd_set_mac_multicast_addr(struct lbtf_private *priv) |
| { |
| struct cmd_ds_mac_multicast_addr cmd; |
| |
| lbtf_deb_enter(LBTF_DEB_CMD); |
| |
| cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
| cmd.action = cpu_to_le16(CMD_ACT_SET); |
| |
| cmd.nr_of_adrs = cpu_to_le16((u16) priv->nr_of_multicastmacaddr); |
| |
| lbtf_deb_cmd("MULTICAST_ADR: setting %d addresses\n", cmd.nr_of_adrs); |
| |
| memcpy(cmd.maclist, priv->multicastlist, |
| priv->nr_of_multicastmacaddr * ETH_ALEN); |
| |
| lbtf_cmd_async(priv, CMD_MAC_MULTICAST_ADR, &cmd.hdr, sizeof(cmd)); |
| |
| lbtf_deb_leave(LBTF_DEB_CMD); |
| return 0; |
| } |
| |
| void lbtf_set_mode(struct lbtf_private *priv, enum lbtf_mode mode) |
| { |
| struct cmd_ds_set_mode cmd; |
| lbtf_deb_enter(LBTF_DEB_WEXT); |
| |
| cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
| cmd.mode = cpu_to_le16(mode); |
| lbtf_deb_wext("Switching to mode: 0x%x\n", mode); |
| lbtf_cmd_async(priv, CMD_802_11_SET_MODE, &cmd.hdr, sizeof(cmd)); |
| |
| lbtf_deb_leave(LBTF_DEB_WEXT); |
| } |
| |
| void lbtf_set_bssid(struct lbtf_private *priv, bool activate, const u8 *bssid) |
| { |
| struct cmd_ds_set_bssid cmd; |
| lbtf_deb_enter(LBTF_DEB_CMD); |
| |
| cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
| cmd.activate = activate ? 1 : 0; |
| if (activate) |
| memcpy(cmd.bssid, bssid, ETH_ALEN); |
| |
| lbtf_cmd_async(priv, CMD_802_11_SET_BSSID, &cmd.hdr, sizeof(cmd)); |
| lbtf_deb_leave(LBTF_DEB_CMD); |
| } |
| |
| int lbtf_set_mac_address(struct lbtf_private *priv, uint8_t *mac_addr) |
| { |
| struct cmd_ds_802_11_mac_address cmd; |
| lbtf_deb_enter(LBTF_DEB_CMD); |
| |
| cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
| cmd.action = cpu_to_le16(CMD_ACT_SET); |
| |
| memcpy(cmd.macadd, mac_addr, ETH_ALEN); |
| |
| lbtf_cmd_async(priv, CMD_802_11_MAC_ADDRESS, &cmd.hdr, sizeof(cmd)); |
| lbtf_deb_leave(LBTF_DEB_CMD); |
| return 0; |
| } |
| |
| int lbtf_set_radio_control(struct lbtf_private *priv) |
| { |
| int ret = 0; |
| struct cmd_ds_802_11_radio_control cmd; |
| |
| lbtf_deb_enter(LBTF_DEB_CMD); |
| |
| cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
| cmd.action = cpu_to_le16(CMD_ACT_SET); |
| |
| switch (priv->preamble) { |
| case CMD_TYPE_SHORT_PREAMBLE: |
| cmd.control = cpu_to_le16(SET_SHORT_PREAMBLE); |
| break; |
| |
| case CMD_TYPE_LONG_PREAMBLE: |
| cmd.control = cpu_to_le16(SET_LONG_PREAMBLE); |
| break; |
| |
| case CMD_TYPE_AUTO_PREAMBLE: |
| default: |
| cmd.control = cpu_to_le16(SET_AUTO_PREAMBLE); |
| break; |
| } |
| |
| if (priv->radioon) |
| cmd.control |= cpu_to_le16(TURN_ON_RF); |
| else |
| cmd.control &= cpu_to_le16(~TURN_ON_RF); |
| |
| lbtf_deb_cmd("RADIO_SET: radio %d, preamble %d\n", priv->radioon, |
| priv->preamble); |
| |
| ret = lbtf_cmd_with_response(priv, CMD_802_11_RADIO_CONTROL, &cmd); |
| |
| lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", ret); |
| return ret; |
| } |
| |
| void lbtf_set_mac_control(struct lbtf_private *priv) |
| { |
| struct cmd_ds_mac_control cmd; |
| lbtf_deb_enter(LBTF_DEB_CMD); |
| |
| cmd.hdr.size = cpu_to_le16(sizeof(cmd)); |
| cmd.action = cpu_to_le16(priv->mac_control); |
| cmd.reserved = 0; |
| |
| lbtf_cmd_async(priv, CMD_MAC_CONTROL, |
| &cmd.hdr, sizeof(cmd)); |
| |
| lbtf_deb_leave(LBTF_DEB_CMD); |
| } |
| |
| /** |
| * lbtf_allocate_cmd_buffer - Allocates cmd buffer, links it to free cmd queue |
| * |
| * @priv A pointer to struct lbtf_private structure |
| * |
| * Returns: 0 on success. |
| */ |
| int lbtf_allocate_cmd_buffer(struct lbtf_private *priv) |
| { |
| int ret = 0; |
| u32 bufsize; |
| u32 i; |
| struct cmd_ctrl_node *cmdarray; |
| |
| lbtf_deb_enter(LBTF_DEB_HOST); |
| |
| /* Allocate and initialize the command array */ |
| bufsize = sizeof(struct cmd_ctrl_node) * LBS_NUM_CMD_BUFFERS; |
| cmdarray = kzalloc(bufsize, GFP_KERNEL); |
| if (!cmdarray) { |
| lbtf_deb_host("ALLOC_CMD_BUF: tempcmd_array is NULL\n"); |
| ret = -1; |
| goto done; |
| } |
| priv->cmd_array = cmdarray; |
| |
| /* Allocate and initialize each command buffer in the command array */ |
| for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) { |
| cmdarray[i].cmdbuf = kzalloc(LBS_CMD_BUFFER_SIZE, GFP_KERNEL); |
| if (!cmdarray[i].cmdbuf) { |
| lbtf_deb_host("ALLOC_CMD_BUF: ptempvirtualaddr is NULL\n"); |
| ret = -1; |
| goto done; |
| } |
| } |
| |
| for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) { |
| init_waitqueue_head(&cmdarray[i].cmdwait_q); |
| lbtf_cleanup_and_insert_cmd(priv, &cmdarray[i]); |
| } |
| |
| ret = 0; |
| |
| done: |
| lbtf_deb_leave_args(LBTF_DEB_HOST, "ret %d", ret); |
| return ret; |
| } |
| |
| /** |
| * lbtf_free_cmd_buffer - Frees the cmd buffer. |
| * |
| * @priv A pointer to struct lbtf_private structure |
| * |
| * Returns: 0 |
| */ |
| int lbtf_free_cmd_buffer(struct lbtf_private *priv) |
| { |
| struct cmd_ctrl_node *cmdarray; |
| unsigned int i; |
| |
| lbtf_deb_enter(LBTF_DEB_HOST); |
| |
| /* need to check if cmd array is allocated or not */ |
| if (priv->cmd_array == NULL) { |
| lbtf_deb_host("FREE_CMD_BUF: cmd_array is NULL\n"); |
| goto done; |
| } |
| |
| cmdarray = priv->cmd_array; |
| |
| /* Release shared memory buffers */ |
| for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) { |
| kfree(cmdarray[i].cmdbuf); |
| cmdarray[i].cmdbuf = NULL; |
| } |
| |
| /* Release cmd_ctrl_node */ |
| kfree(priv->cmd_array); |
| priv->cmd_array = NULL; |
| |
| done: |
| lbtf_deb_leave(LBTF_DEB_HOST); |
| return 0; |
| } |
| |
| /** |
| * lbtf_get_cmd_ctrl_node - Gets free cmd node from free cmd queue. |
| * |
| * @priv A pointer to struct lbtf_private structure |
| * |
| * Returns: pointer to a struct cmd_ctrl_node or NULL if none available. |
| */ |
| static struct cmd_ctrl_node *lbtf_get_cmd_ctrl_node(struct lbtf_private *priv) |
| { |
| struct cmd_ctrl_node *tempnode; |
| unsigned long flags; |
| |
| lbtf_deb_enter(LBTF_DEB_HOST); |
| |
| if (!priv) |
| return NULL; |
| |
| spin_lock_irqsave(&priv->driver_lock, flags); |
| |
| if (!list_empty(&priv->cmdfreeq)) { |
| tempnode = list_first_entry(&priv->cmdfreeq, |
| struct cmd_ctrl_node, list); |
| list_del(&tempnode->list); |
| } else { |
| lbtf_deb_host("GET_CMD_NODE: cmd_ctrl_node is not available\n"); |
| tempnode = NULL; |
| } |
| |
| spin_unlock_irqrestore(&priv->driver_lock, flags); |
| |
| lbtf_deb_leave(LBTF_DEB_HOST); |
| return tempnode; |
| } |
| |
| /** |
| * lbtf_execute_next_command: execute next command in cmd pending queue. |
| * |
| * @priv A pointer to struct lbtf_private structure |
| * |
| * Returns: 0 on success. |
| */ |
| int lbtf_execute_next_command(struct lbtf_private *priv) |
| { |
| struct cmd_ctrl_node *cmdnode = NULL; |
| struct cmd_header *cmd; |
| unsigned long flags; |
| int ret = 0; |
| |
| /* Debug group is lbtf_deb_THREAD and not lbtf_deb_HOST, because the |
| * only caller to us is lbtf_thread() and we get even when a |
| * data packet is received */ |
| lbtf_deb_enter(LBTF_DEB_THREAD); |
| |
| spin_lock_irqsave(&priv->driver_lock, flags); |
| |
| if (priv->cur_cmd) { |
| pr_alert("EXEC_NEXT_CMD: already processing command!\n"); |
| spin_unlock_irqrestore(&priv->driver_lock, flags); |
| ret = -1; |
| goto done; |
| } |
| |
| if (!list_empty(&priv->cmdpendingq)) { |
| cmdnode = list_first_entry(&priv->cmdpendingq, |
| struct cmd_ctrl_node, list); |
| } |
| |
| if (cmdnode) { |
| cmd = cmdnode->cmdbuf; |
| |
| list_del(&cmdnode->list); |
| lbtf_deb_host("EXEC_NEXT_CMD: sending command 0x%04x\n", |
| le16_to_cpu(cmd->command)); |
| spin_unlock_irqrestore(&priv->driver_lock, flags); |
| lbtf_submit_command(priv, cmdnode); |
| } else |
| spin_unlock_irqrestore(&priv->driver_lock, flags); |
| |
| ret = 0; |
| done: |
| lbtf_deb_leave(LBTF_DEB_THREAD); |
| return ret; |
| } |
| |
| static struct cmd_ctrl_node *__lbtf_cmd_async(struct lbtf_private *priv, |
| uint16_t command, struct cmd_header *in_cmd, int in_cmd_size, |
| int (*callback)(struct lbtf_private *, unsigned long, |
| struct cmd_header *), |
| unsigned long callback_arg) |
| { |
| struct cmd_ctrl_node *cmdnode; |
| |
| lbtf_deb_enter(LBTF_DEB_HOST); |
| |
| if (priv->surpriseremoved) { |
| lbtf_deb_host("PREP_CMD: card removed\n"); |
| cmdnode = ERR_PTR(-ENOENT); |
| goto done; |
| } |
| |
| cmdnode = lbtf_get_cmd_ctrl_node(priv); |
| if (cmdnode == NULL) { |
| lbtf_deb_host("PREP_CMD: cmdnode is NULL\n"); |
| |
| /* Wake up main thread to execute next command */ |
| queue_work(lbtf_wq, &priv->cmd_work); |
| cmdnode = ERR_PTR(-ENOBUFS); |
| goto done; |
| } |
| |
| cmdnode->callback = callback; |
| cmdnode->callback_arg = callback_arg; |
| |
| /* Copy the incoming command to the buffer */ |
| memcpy(cmdnode->cmdbuf, in_cmd, in_cmd_size); |
| |
| /* Set sequence number, clean result, move to buffer */ |
| priv->seqnum++; |
| cmdnode->cmdbuf->command = cpu_to_le16(command); |
| cmdnode->cmdbuf->size = cpu_to_le16(in_cmd_size); |
| cmdnode->cmdbuf->seqnum = cpu_to_le16(priv->seqnum); |
| cmdnode->cmdbuf->result = 0; |
| |
| lbtf_deb_host("PREP_CMD: command 0x%04x\n", command); |
| |
| cmdnode->cmdwaitqwoken = 0; |
| lbtf_queue_cmd(priv, cmdnode); |
| queue_work(lbtf_wq, &priv->cmd_work); |
| |
| done: |
| lbtf_deb_leave_args(LBTF_DEB_HOST, "ret %p", cmdnode); |
| return cmdnode; |
| } |
| |
| void lbtf_cmd_async(struct lbtf_private *priv, uint16_t command, |
| struct cmd_header *in_cmd, int in_cmd_size) |
| { |
| lbtf_deb_enter(LBTF_DEB_CMD); |
| __lbtf_cmd_async(priv, command, in_cmd, in_cmd_size, NULL, 0); |
| lbtf_deb_leave(LBTF_DEB_CMD); |
| } |
| |
| int __lbtf_cmd(struct lbtf_private *priv, uint16_t command, |
| struct cmd_header *in_cmd, int in_cmd_size, |
| int (*callback)(struct lbtf_private *, |
| unsigned long, struct cmd_header *), |
| unsigned long callback_arg) |
| { |
| struct cmd_ctrl_node *cmdnode; |
| unsigned long flags; |
| int ret = 0; |
| |
| lbtf_deb_enter(LBTF_DEB_HOST); |
| |
| cmdnode = __lbtf_cmd_async(priv, command, in_cmd, in_cmd_size, |
| callback, callback_arg); |
| if (IS_ERR(cmdnode)) { |
| ret = PTR_ERR(cmdnode); |
| goto done; |
| } |
| |
| might_sleep(); |
| ret = wait_event_interruptible(cmdnode->cmdwait_q, |
| cmdnode->cmdwaitqwoken); |
| if (ret) { |
| pr_info("PREP_CMD: command 0x%04x interrupted by signal: %d\n", |
| command, ret); |
| goto done; |
| } |
| |
| spin_lock_irqsave(&priv->driver_lock, flags); |
| ret = cmdnode->result; |
| if (ret) |
| pr_info("PREP_CMD: command 0x%04x failed: %d\n", |
| command, ret); |
| |
| __lbtf_cleanup_and_insert_cmd(priv, cmdnode); |
| spin_unlock_irqrestore(&priv->driver_lock, flags); |
| |
| done: |
| lbtf_deb_leave_args(LBTF_DEB_HOST, "ret %d", ret); |
| return ret; |
| } |
| EXPORT_SYMBOL_GPL(__lbtf_cmd); |
| |
| /* Call holding driver_lock */ |
| void lbtf_cmd_response_rx(struct lbtf_private *priv) |
| { |
| priv->cmd_response_rxed = 1; |
| queue_work(lbtf_wq, &priv->cmd_work); |
| } |
| EXPORT_SYMBOL_GPL(lbtf_cmd_response_rx); |
| |
| int lbtf_process_rx_command(struct lbtf_private *priv) |
| { |
| uint16_t respcmd, curcmd; |
| struct cmd_header *resp; |
| int ret = 0; |
| unsigned long flags; |
| uint16_t result; |
| |
| lbtf_deb_enter(LBTF_DEB_CMD); |
| |
| mutex_lock(&priv->lock); |
| spin_lock_irqsave(&priv->driver_lock, flags); |
| |
| if (!priv->cur_cmd) { |
| ret = -1; |
| spin_unlock_irqrestore(&priv->driver_lock, flags); |
| goto done; |
| } |
| |
| resp = (void *)priv->cmd_resp_buff; |
| curcmd = le16_to_cpu(priv->cur_cmd->cmdbuf->command); |
| respcmd = le16_to_cpu(resp->command); |
| result = le16_to_cpu(resp->result); |
| |
| lbtf_deb_cmd("libertastf: cmd response 0x%04x, seq %d, size %d\n", |
| respcmd, le16_to_cpu(resp->seqnum), |
| le16_to_cpu(resp->size)); |
| |
| if (resp->seqnum != priv->cur_cmd->cmdbuf->seqnum) { |
| spin_unlock_irqrestore(&priv->driver_lock, flags); |
| ret = -1; |
| goto done; |
| } |
| if (respcmd != CMD_RET(curcmd)) { |
| spin_unlock_irqrestore(&priv->driver_lock, flags); |
| ret = -1; |
| goto done; |
| } |
| |
| if (resp->result == cpu_to_le16(0x0004)) { |
| /* 0x0004 means -EAGAIN. Drop the response, let it time out |
| and be resubmitted */ |
| spin_unlock_irqrestore(&priv->driver_lock, flags); |
| ret = -1; |
| goto done; |
| } |
| |
| /* Now we got response from FW, cancel the command timer */ |
| del_timer(&priv->command_timer); |
| priv->cmd_timed_out = 0; |
| if (priv->nr_retries) |
| priv->nr_retries = 0; |
| |
| /* If the command is not successful, cleanup and return failure */ |
| if ((result != 0 || !(respcmd & 0x8000))) { |
| /* |
| * Handling errors here |
| */ |
| switch (respcmd) { |
| case CMD_RET(CMD_GET_HW_SPEC): |
| case CMD_RET(CMD_802_11_RESET): |
| pr_info("libertastf: reset failed\n"); |
| break; |
| |
| } |
| lbtf_complete_command(priv, priv->cur_cmd, result); |
| spin_unlock_irqrestore(&priv->driver_lock, flags); |
| |
| ret = -1; |
| goto done; |
| } |
| |
| spin_unlock_irqrestore(&priv->driver_lock, flags); |
| |
| if (priv->cur_cmd && priv->cur_cmd->callback) { |
| ret = priv->cur_cmd->callback(priv, priv->cur_cmd->callback_arg, |
| resp); |
| } |
| spin_lock_irqsave(&priv->driver_lock, flags); |
| |
| if (priv->cur_cmd) { |
| /* Clean up and Put current command back to cmdfreeq */ |
| lbtf_complete_command(priv, priv->cur_cmd, result); |
| } |
| spin_unlock_irqrestore(&priv->driver_lock, flags); |
| |
| done: |
| mutex_unlock(&priv->lock); |
| lbtf_deb_leave_args(LBTF_DEB_CMD, "ret %d", ret); |
| return ret; |
| } |