1e705c121SKalle Valo /****************************************************************************** 2e705c121SKalle Valo * 3e705c121SKalle Valo * This file is provided under a dual BSD/GPLv2 license. When using or 4e705c121SKalle Valo * redistributing this file, you may do so under either license. 5e705c121SKalle Valo * 6e705c121SKalle Valo * GPL LICENSE SUMMARY 7e705c121SKalle Valo * 8e705c121SKalle Valo * Copyright(c) 2015 Intel Mobile Communications GmbH 9d621d3c7SLuca Coelho * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 10fda1bd0dSMordechay Goodstein * Copyright(c) 2019 - 2020 Intel Corporation 11e705c121SKalle Valo * 12e705c121SKalle Valo * This program is free software; you can redistribute it and/or modify 13e705c121SKalle Valo * it under the terms of version 2 of the GNU General Public License as 14e705c121SKalle Valo * published by the Free Software Foundation. 15e705c121SKalle Valo * 16e705c121SKalle Valo * This program is distributed in the hope that it will be useful, but 17e705c121SKalle Valo * WITHOUT ANY WARRANTY; without even the implied warranty of 18e705c121SKalle Valo * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 19e705c121SKalle Valo * General Public License for more details. 20e705c121SKalle Valo * 21e705c121SKalle Valo * The full GNU General Public License is included in this distribution 22e705c121SKalle Valo * in the file called COPYING. 23e705c121SKalle Valo * 24e705c121SKalle Valo * Contact Information: 25d01c5366SEmmanuel Grumbach * Intel Linux Wireless <linuxwifi@intel.com> 26e705c121SKalle Valo * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 27e705c121SKalle Valo * 28e705c121SKalle Valo * BSD LICENSE 29e705c121SKalle Valo * 30e705c121SKalle Valo * Copyright(c) 2015 Intel Mobile Communications GmbH 31d621d3c7SLuca Coelho * Copyright(c) 2016 - 2017 Intel Deutschland GmbH 32fda1bd0dSMordechay Goodstein * Copyright(c) 2019 - 2020 Intel Corporation 33e705c121SKalle Valo * All rights reserved. 34e705c121SKalle Valo * 35e705c121SKalle Valo * Redistribution and use in source and binary forms, with or without 36e705c121SKalle Valo * modification, are permitted provided that the following conditions 37e705c121SKalle Valo * are met: 38e705c121SKalle Valo * 39e705c121SKalle Valo * * Redistributions of source code must retain the above copyright 40e705c121SKalle Valo * notice, this list of conditions and the following disclaimer. 41e705c121SKalle Valo * * Redistributions in binary form must reproduce the above copyright 42e705c121SKalle Valo * notice, this list of conditions and the following disclaimer in 43e705c121SKalle Valo * the documentation and/or other materials provided with the 44e705c121SKalle Valo * distribution. 45e705c121SKalle Valo * * Neither the name Intel Corporation nor the names of its 46e705c121SKalle Valo * contributors may be used to endorse or promote products derived 47e705c121SKalle Valo * from this software without specific prior written permission. 48e705c121SKalle Valo * 49e705c121SKalle Valo * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 50e705c121SKalle Valo * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 51e705c121SKalle Valo * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 52e705c121SKalle Valo * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 53e705c121SKalle Valo * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 54e705c121SKalle Valo * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 55e705c121SKalle Valo * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 56e705c121SKalle Valo * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 57e705c121SKalle Valo * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 58e705c121SKalle Valo * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 59e705c121SKalle Valo * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 60e705c121SKalle Valo * 61e705c121SKalle Valo *****************************************************************************/ 62e705c121SKalle Valo #include <linux/kernel.h> 6339bdb17eSSharon Dvir #include <linux/bsearch.h> 6439bdb17eSSharon Dvir 65fda1bd0dSMordechay Goodstein #include "fw/api/tx.h" 66e705c121SKalle Valo #include "iwl-trans.h" 6739bdb17eSSharon Dvir #include "iwl-drv.h" 683cd1980bSSara Sharon #include "iwl-fh.h" 69a26014e2SMordechay Goodstein #include <linux/dmapool.h> 70e705c121SKalle Valo 71e705c121SKalle Valo struct iwl_trans *iwl_trans_alloc(unsigned int priv_size, 72e705c121SKalle Valo struct device *dev, 73a89c72ffSJohannes Berg const struct iwl_trans_ops *ops, 74fda1bd0dSMordechay Goodstein const struct iwl_cfg_trans_params *cfg_trans) 75e705c121SKalle Valo { 76e705c121SKalle Valo struct iwl_trans *trans; 77fda1bd0dSMordechay Goodstein int txcmd_size, txcmd_align; 78e705c121SKalle Valo #ifdef CONFIG_LOCKDEP 79e705c121SKalle Valo static struct lock_class_key __key; 80e705c121SKalle Valo #endif 81e705c121SKalle Valo 825a41a86cSSharon Dvir trans = devm_kzalloc(dev, sizeof(*trans) + priv_size, GFP_KERNEL); 83e705c121SKalle Valo if (!trans) 84e705c121SKalle Valo return NULL; 85e705c121SKalle Valo 86fda1bd0dSMordechay Goodstein trans->trans_cfg = cfg_trans; 87fda1bd0dSMordechay Goodstein if (!cfg_trans->gen2) { 88fda1bd0dSMordechay Goodstein txcmd_size = sizeof(struct iwl_tx_cmd); 89fda1bd0dSMordechay Goodstein txcmd_align = sizeof(void *); 90fda1bd0dSMordechay Goodstein } else if (cfg_trans->device_family < IWL_DEVICE_FAMILY_AX210) { 91fda1bd0dSMordechay Goodstein txcmd_size = sizeof(struct iwl_tx_cmd_gen2); 92fda1bd0dSMordechay Goodstein txcmd_align = 64; 93fda1bd0dSMordechay Goodstein } else { 94fda1bd0dSMordechay Goodstein txcmd_size = sizeof(struct iwl_tx_cmd_gen3); 95fda1bd0dSMordechay Goodstein txcmd_align = 128; 96fda1bd0dSMordechay Goodstein } 97fda1bd0dSMordechay Goodstein 98fda1bd0dSMordechay Goodstein txcmd_size += sizeof(struct iwl_cmd_header); 99fda1bd0dSMordechay Goodstein txcmd_size += 36; /* biggest possible 802.11 header */ 100fda1bd0dSMordechay Goodstein 101fda1bd0dSMordechay Goodstein /* Ensure device TX cmd cannot reach/cross a page boundary in gen2 */ 102fda1bd0dSMordechay Goodstein if (WARN_ON(cfg_trans->gen2 && txcmd_size >= txcmd_align)) 103fda1bd0dSMordechay Goodstein return ERR_PTR(-EINVAL); 104fda1bd0dSMordechay Goodstein 105e705c121SKalle Valo #ifdef CONFIG_LOCKDEP 106e705c121SKalle Valo lockdep_init_map(&trans->sync_cmd_lockdep_map, "sync_cmd_lockdep_map", 107e705c121SKalle Valo &__key, 0); 108e705c121SKalle Valo #endif 109e705c121SKalle Valo 110e705c121SKalle Valo trans->dev = dev; 111e705c121SKalle Valo trans->ops = ops; 112e705c121SKalle Valo trans->num_rx_queues = 1; 113e705c121SKalle Valo 114a26014e2SMordechay Goodstein if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_AX210) 115a26014e2SMordechay Goodstein trans->txqs.bc_tbl_size = sizeof(struct iwl_gen3_bc_tbl); 116a26014e2SMordechay Goodstein else 117a26014e2SMordechay Goodstein trans->txqs.bc_tbl_size = sizeof(struct iwlagn_scd_bc_tbl); 118a26014e2SMordechay Goodstein /* 119a26014e2SMordechay Goodstein * For gen2 devices, we use a single allocation for each byte-count 120a26014e2SMordechay Goodstein * table, but they're pretty small (1k) so use a DMA pool that we 121a26014e2SMordechay Goodstein * allocate here. 122a26014e2SMordechay Goodstein */ 123a26014e2SMordechay Goodstein if (trans->trans_cfg->gen2) { 124a26014e2SMordechay Goodstein trans->txqs.bc_pool = dmam_pool_create("iwlwifi:bc", dev, 125a26014e2SMordechay Goodstein trans->txqs.bc_tbl_size, 126a26014e2SMordechay Goodstein 256, 0); 127a26014e2SMordechay Goodstein if (!trans->txqs.bc_pool) 128a26014e2SMordechay Goodstein return NULL; 129a26014e2SMordechay Goodstein } 130e705c121SKalle Valo snprintf(trans->dev_cmd_pool_name, sizeof(trans->dev_cmd_pool_name), 131e705c121SKalle Valo "iwl_cmd_pool:%s", dev_name(trans->dev)); 132e705c121SKalle Valo trans->dev_cmd_pool = 133e705c121SKalle Valo kmem_cache_create(trans->dev_cmd_pool_name, 134fda1bd0dSMordechay Goodstein txcmd_size, txcmd_align, 135a89c72ffSJohannes Berg SLAB_HWCACHE_ALIGN, NULL); 136e705c121SKalle Valo if (!trans->dev_cmd_pool) 1375a41a86cSSharon Dvir return NULL; 138e705c121SKalle Valo 139d6d517b7SSara Sharon WARN_ON(!ops->wait_txq_empty && !ops->wait_tx_queues_empty); 140d6d517b7SSara Sharon 141e705c121SKalle Valo return trans; 142e705c121SKalle Valo } 143e705c121SKalle Valo 144e705c121SKalle Valo void iwl_trans_free(struct iwl_trans *trans) 145e705c121SKalle Valo { 146e705c121SKalle Valo kmem_cache_destroy(trans->dev_cmd_pool); 147e705c121SKalle Valo } 14892fe8343SEmmanuel Grumbach 14992fe8343SEmmanuel Grumbach int iwl_trans_send_cmd(struct iwl_trans *trans, struct iwl_host_cmd *cmd) 15092fe8343SEmmanuel Grumbach { 15192fe8343SEmmanuel Grumbach int ret; 15292fe8343SEmmanuel Grumbach 15392fe8343SEmmanuel Grumbach if (unlikely(!(cmd->flags & CMD_SEND_IN_RFKILL) && 154326477e4SJohannes Berg test_bit(STATUS_RFKILL_OPMODE, &trans->status))) 15592fe8343SEmmanuel Grumbach return -ERFKILL; 15692fe8343SEmmanuel Grumbach 15792fe8343SEmmanuel Grumbach if (unlikely(test_bit(STATUS_FW_ERROR, &trans->status))) 15892fe8343SEmmanuel Grumbach return -EIO; 15992fe8343SEmmanuel Grumbach 16092fe8343SEmmanuel Grumbach if (unlikely(trans->state != IWL_TRANS_FW_ALIVE)) { 16192fe8343SEmmanuel Grumbach IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state); 16292fe8343SEmmanuel Grumbach return -EIO; 16392fe8343SEmmanuel Grumbach } 16492fe8343SEmmanuel Grumbach 16592fe8343SEmmanuel Grumbach if (WARN_ON((cmd->flags & CMD_WANT_ASYNC_CALLBACK) && 16692fe8343SEmmanuel Grumbach !(cmd->flags & CMD_ASYNC))) 16792fe8343SEmmanuel Grumbach return -EINVAL; 16892fe8343SEmmanuel Grumbach 16992fe8343SEmmanuel Grumbach if (!(cmd->flags & CMD_ASYNC)) 17092fe8343SEmmanuel Grumbach lock_map_acquire_read(&trans->sync_cmd_lockdep_map); 17192fe8343SEmmanuel Grumbach 1725b88792cSSara Sharon if (trans->wide_cmd_header && !iwl_cmd_groupid(cmd->id)) 1735b88792cSSara Sharon cmd->id = DEF_ID(cmd->id); 1745b88792cSSara Sharon 17592fe8343SEmmanuel Grumbach ret = trans->ops->send_cmd(trans, cmd); 17692fe8343SEmmanuel Grumbach 17792fe8343SEmmanuel Grumbach if (!(cmd->flags & CMD_ASYNC)) 17892fe8343SEmmanuel Grumbach lock_map_release(&trans->sync_cmd_lockdep_map); 17992fe8343SEmmanuel Grumbach 1800ec971fdSJohannes Berg if (WARN_ON((cmd->flags & CMD_WANT_SKB) && !ret && !cmd->resp_pkt)) 1810ec971fdSJohannes Berg return -EIO; 1820ec971fdSJohannes Berg 18392fe8343SEmmanuel Grumbach return ret; 18492fe8343SEmmanuel Grumbach } 18592fe8343SEmmanuel Grumbach IWL_EXPORT_SYMBOL(iwl_trans_send_cmd); 18639bdb17eSSharon Dvir 18739bdb17eSSharon Dvir /* Comparator for struct iwl_hcmd_names. 18839bdb17eSSharon Dvir * Used in the binary search over a list of host commands. 18939bdb17eSSharon Dvir * 19039bdb17eSSharon Dvir * @key: command_id that we're looking for. 19139bdb17eSSharon Dvir * @elt: struct iwl_hcmd_names candidate for match. 19239bdb17eSSharon Dvir * 19339bdb17eSSharon Dvir * @return 0 iff equal. 19439bdb17eSSharon Dvir */ 19539bdb17eSSharon Dvir static int iwl_hcmd_names_cmp(const void *key, const void *elt) 19639bdb17eSSharon Dvir { 19739bdb17eSSharon Dvir const struct iwl_hcmd_names *name = elt; 19839bdb17eSSharon Dvir u8 cmd1 = *(u8 *)key; 19939bdb17eSSharon Dvir u8 cmd2 = name->cmd_id; 20039bdb17eSSharon Dvir 20139bdb17eSSharon Dvir return (cmd1 - cmd2); 20239bdb17eSSharon Dvir } 20339bdb17eSSharon Dvir 20439bdb17eSSharon Dvir const char *iwl_get_cmd_string(struct iwl_trans *trans, u32 id) 20539bdb17eSSharon Dvir { 20639bdb17eSSharon Dvir u8 grp, cmd; 20739bdb17eSSharon Dvir struct iwl_hcmd_names *ret; 20839bdb17eSSharon Dvir const struct iwl_hcmd_arr *arr; 20939bdb17eSSharon Dvir size_t size = sizeof(struct iwl_hcmd_names); 21039bdb17eSSharon Dvir 21139bdb17eSSharon Dvir grp = iwl_cmd_groupid(id); 21239bdb17eSSharon Dvir cmd = iwl_cmd_opcode(id); 21339bdb17eSSharon Dvir 21439bdb17eSSharon Dvir if (!trans->command_groups || grp >= trans->command_groups_size || 21539bdb17eSSharon Dvir !trans->command_groups[grp].arr) 21639bdb17eSSharon Dvir return "UNKNOWN"; 21739bdb17eSSharon Dvir 21839bdb17eSSharon Dvir arr = &trans->command_groups[grp]; 21939bdb17eSSharon Dvir ret = bsearch(&cmd, arr->arr, arr->size, size, iwl_hcmd_names_cmp); 22039bdb17eSSharon Dvir if (!ret) 22139bdb17eSSharon Dvir return "UNKNOWN"; 22239bdb17eSSharon Dvir return ret->cmd_name; 22339bdb17eSSharon Dvir } 22439bdb17eSSharon Dvir IWL_EXPORT_SYMBOL(iwl_get_cmd_string); 22539bdb17eSSharon Dvir 22639bdb17eSSharon Dvir int iwl_cmd_groups_verify_sorted(const struct iwl_trans_config *trans) 22739bdb17eSSharon Dvir { 22839bdb17eSSharon Dvir int i, j; 22939bdb17eSSharon Dvir const struct iwl_hcmd_arr *arr; 23039bdb17eSSharon Dvir 23139bdb17eSSharon Dvir for (i = 0; i < trans->command_groups_size; i++) { 23239bdb17eSSharon Dvir arr = &trans->command_groups[i]; 23339bdb17eSSharon Dvir if (!arr->arr) 23439bdb17eSSharon Dvir continue; 23539bdb17eSSharon Dvir for (j = 0; j < arr->size - 1; j++) 23639bdb17eSSharon Dvir if (arr->arr[j].cmd_id > arr->arr[j + 1].cmd_id) 23739bdb17eSSharon Dvir return -1; 23839bdb17eSSharon Dvir } 23939bdb17eSSharon Dvir return 0; 24039bdb17eSSharon Dvir } 24139bdb17eSSharon Dvir IWL_EXPORT_SYMBOL(iwl_cmd_groups_verify_sorted); 242