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) 2007 - 2014 Intel Corporation. All rights reserved. 9e705c121SKalle Valo * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 10e705c121SKalle Valo * 11e705c121SKalle Valo * This program is free software; you can redistribute it and/or modify 12e705c121SKalle Valo * it under the terms of version 2 of the GNU General Public License as 13e705c121SKalle Valo * published by the Free Software Foundation. 14e705c121SKalle Valo * 15e705c121SKalle Valo * This program is distributed in the hope that it will be useful, but 16e705c121SKalle Valo * WITHOUT ANY WARRANTY; without even the implied warranty of 17e705c121SKalle Valo * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18e705c121SKalle Valo * General Public License for more details. 19e705c121SKalle Valo * 20e705c121SKalle Valo * You should have received a copy of the GNU General Public License 21e705c121SKalle Valo * along with this program; if not, write to the Free Software 22e705c121SKalle Valo * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, 23e705c121SKalle Valo * USA 24e705c121SKalle Valo * 25e705c121SKalle Valo * The full GNU General Public License is included in this distribution 26e705c121SKalle Valo * in the file called COPYING. 27e705c121SKalle Valo * 28e705c121SKalle Valo * Contact Information: 29e705c121SKalle Valo * Intel Linux Wireless <ilw@linux.intel.com> 30e705c121SKalle Valo * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 31e705c121SKalle Valo * 32e705c121SKalle Valo * BSD LICENSE 33e705c121SKalle Valo * 34e705c121SKalle Valo * Copyright(c) 2005 - 2014 Intel Corporation. All rights reserved. 35e705c121SKalle Valo * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH 36e705c121SKalle Valo * All rights reserved. 37e705c121SKalle Valo * 38e705c121SKalle Valo * Redistribution and use in source and binary forms, with or without 39e705c121SKalle Valo * modification, are permitted provided that the following conditions 40e705c121SKalle Valo * are met: 41e705c121SKalle Valo * 42e705c121SKalle Valo * * Redistributions of source code must retain the above copyright 43e705c121SKalle Valo * notice, this list of conditions and the following disclaimer. 44e705c121SKalle Valo * * Redistributions in binary form must reproduce the above copyright 45e705c121SKalle Valo * notice, this list of conditions and the following disclaimer in 46e705c121SKalle Valo * the documentation and/or other materials provided with the 47e705c121SKalle Valo * distribution. 48e705c121SKalle Valo * * Neither the name Intel Corporation nor the names of its 49e705c121SKalle Valo * contributors may be used to endorse or promote products derived 50e705c121SKalle Valo * from this software without specific prior written permission. 51e705c121SKalle Valo * 52e705c121SKalle Valo * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 53e705c121SKalle Valo * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 54e705c121SKalle Valo * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 55e705c121SKalle Valo * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 56e705c121SKalle Valo * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 57e705c121SKalle Valo * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 58e705c121SKalle Valo * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 59e705c121SKalle Valo * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 60e705c121SKalle Valo * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 61e705c121SKalle Valo * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 62e705c121SKalle Valo * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 63e705c121SKalle Valo * 64e705c121SKalle Valo *****************************************************************************/ 65e705c121SKalle Valo #ifndef __iwl_trans_h__ 66e705c121SKalle Valo #define __iwl_trans_h__ 67e705c121SKalle Valo 68e705c121SKalle Valo #include <linux/ieee80211.h> 69e705c121SKalle Valo #include <linux/mm.h> /* for page_address */ 70e705c121SKalle Valo #include <linux/lockdep.h> 71e705c121SKalle Valo 72e705c121SKalle Valo #include "iwl-debug.h" 73e705c121SKalle Valo #include "iwl-config.h" 74e705c121SKalle Valo #include "iwl-fw.h" 75e705c121SKalle Valo #include "iwl-op-mode.h" 76e705c121SKalle Valo 77e705c121SKalle Valo /** 78e705c121SKalle Valo * DOC: Transport layer - what is it ? 79e705c121SKalle Valo * 80e705c121SKalle Valo * The transport layer is the layer that deals with the HW directly. It provides 81e705c121SKalle Valo * an abstraction of the underlying HW to the upper layer. The transport layer 82e705c121SKalle Valo * doesn't provide any policy, algorithm or anything of this kind, but only 83e705c121SKalle Valo * mechanisms to make the HW do something. It is not completely stateless but 84e705c121SKalle Valo * close to it. 85e705c121SKalle Valo * We will have an implementation for each different supported bus. 86e705c121SKalle Valo */ 87e705c121SKalle Valo 88e705c121SKalle Valo /** 89e705c121SKalle Valo * DOC: Life cycle of the transport layer 90e705c121SKalle Valo * 91e705c121SKalle Valo * The transport layer has a very precise life cycle. 92e705c121SKalle Valo * 93e705c121SKalle Valo * 1) A helper function is called during the module initialization and 94e705c121SKalle Valo * registers the bus driver's ops with the transport's alloc function. 95e705c121SKalle Valo * 2) Bus's probe calls to the transport layer's allocation functions. 96e705c121SKalle Valo * Of course this function is bus specific. 97e705c121SKalle Valo * 3) This allocation functions will spawn the upper layer which will 98e705c121SKalle Valo * register mac80211. 99e705c121SKalle Valo * 100e705c121SKalle Valo * 4) At some point (i.e. mac80211's start call), the op_mode will call 101e705c121SKalle Valo * the following sequence: 102e705c121SKalle Valo * start_hw 103e705c121SKalle Valo * start_fw 104e705c121SKalle Valo * 105e705c121SKalle Valo * 5) Then when finished (or reset): 106e705c121SKalle Valo * stop_device 107e705c121SKalle Valo * 108e705c121SKalle Valo * 6) Eventually, the free function will be called. 109e705c121SKalle Valo */ 110e705c121SKalle Valo 111e705c121SKalle Valo /** 112e705c121SKalle Valo * DOC: Host command section 113e705c121SKalle Valo * 114e705c121SKalle Valo * A host command is a command issued by the upper layer to the fw. There are 115e705c121SKalle Valo * several versions of fw that have several APIs. The transport layer is 116e705c121SKalle Valo * completely agnostic to these differences. 117e705c121SKalle Valo * The transport does provide helper functionality (i.e. SYNC / ASYNC mode), 118e705c121SKalle Valo */ 119e705c121SKalle Valo #define SEQ_TO_QUEUE(s) (((s) >> 8) & 0x1f) 120e705c121SKalle Valo #define QUEUE_TO_SEQ(q) (((q) & 0x1f) << 8) 121e705c121SKalle Valo #define SEQ_TO_INDEX(s) ((s) & 0xff) 122e705c121SKalle Valo #define INDEX_TO_SEQ(i) ((i) & 0xff) 123e705c121SKalle Valo #define SEQ_RX_FRAME cpu_to_le16(0x8000) 124e705c121SKalle Valo 125e705c121SKalle Valo /* 126e705c121SKalle Valo * those functions retrieve specific information from 127e705c121SKalle Valo * the id field in the iwl_host_cmd struct which contains 128e705c121SKalle Valo * the command id, the group id and the version of the command 129e705c121SKalle Valo * and vice versa 130e705c121SKalle Valo */ 131e705c121SKalle Valo static inline u8 iwl_cmd_opcode(u32 cmdid) 132e705c121SKalle Valo { 133e705c121SKalle Valo return cmdid & 0xFF; 134e705c121SKalle Valo } 135e705c121SKalle Valo 136e705c121SKalle Valo static inline u8 iwl_cmd_groupid(u32 cmdid) 137e705c121SKalle Valo { 138e705c121SKalle Valo return ((cmdid & 0xFF00) >> 8); 139e705c121SKalle Valo } 140e705c121SKalle Valo 141e705c121SKalle Valo static inline u8 iwl_cmd_version(u32 cmdid) 142e705c121SKalle Valo { 143e705c121SKalle Valo return ((cmdid & 0xFF0000) >> 16); 144e705c121SKalle Valo } 145e705c121SKalle Valo 146e705c121SKalle Valo static inline u32 iwl_cmd_id(u8 opcode, u8 groupid, u8 version) 147e705c121SKalle Valo { 148e705c121SKalle Valo return opcode + (groupid << 8) + (version << 16); 149e705c121SKalle Valo } 150e705c121SKalle Valo 151e705c121SKalle Valo /* make u16 wide id out of u8 group and opcode */ 152e705c121SKalle Valo #define WIDE_ID(grp, opcode) ((grp << 8) | opcode) 153e705c121SKalle Valo 154e705c121SKalle Valo /* due to the conversion, this group is special; new groups 155e705c121SKalle Valo * should be defined in the appropriate fw-api header files 156e705c121SKalle Valo */ 157e705c121SKalle Valo #define IWL_ALWAYS_LONG_GROUP 1 158e705c121SKalle Valo 159e705c121SKalle Valo /** 160e705c121SKalle Valo * struct iwl_cmd_header 161e705c121SKalle Valo * 162e705c121SKalle Valo * This header format appears in the beginning of each command sent from the 163e705c121SKalle Valo * driver, and each response/notification received from uCode. 164e705c121SKalle Valo */ 165e705c121SKalle Valo struct iwl_cmd_header { 166e705c121SKalle Valo u8 cmd; /* Command ID: REPLY_RXON, etc. */ 167e705c121SKalle Valo u8 group_id; 168e705c121SKalle Valo /* 169e705c121SKalle Valo * The driver sets up the sequence number to values of its choosing. 170e705c121SKalle Valo * uCode does not use this value, but passes it back to the driver 171e705c121SKalle Valo * when sending the response to each driver-originated command, so 172e705c121SKalle Valo * the driver can match the response to the command. Since the values 173e705c121SKalle Valo * don't get used by uCode, the driver may set up an arbitrary format. 174e705c121SKalle Valo * 175e705c121SKalle Valo * There is one exception: uCode sets bit 15 when it originates 176e705c121SKalle Valo * the response/notification, i.e. when the response/notification 177e705c121SKalle Valo * is not a direct response to a command sent by the driver. For 178e705c121SKalle Valo * example, uCode issues REPLY_RX when it sends a received frame 179e705c121SKalle Valo * to the driver; it is not a direct response to any driver command. 180e705c121SKalle Valo * 181e705c121SKalle Valo * The Linux driver uses the following format: 182e705c121SKalle Valo * 183e705c121SKalle Valo * 0:7 tfd index - position within TX queue 184e705c121SKalle Valo * 8:12 TX queue id 185e705c121SKalle Valo * 13:14 reserved 186e705c121SKalle Valo * 15 unsolicited RX or uCode-originated notification 187e705c121SKalle Valo */ 188e705c121SKalle Valo __le16 sequence; 189e705c121SKalle Valo } __packed; 190e705c121SKalle Valo 191e705c121SKalle Valo /** 192e705c121SKalle Valo * struct iwl_cmd_header_wide 193e705c121SKalle Valo * 194e705c121SKalle Valo * This header format appears in the beginning of each command sent from the 195e705c121SKalle Valo * driver, and each response/notification received from uCode. 196e705c121SKalle Valo * this is the wide version that contains more information about the command 197e705c121SKalle Valo * like length, version and command type 198e705c121SKalle Valo */ 199e705c121SKalle Valo struct iwl_cmd_header_wide { 200e705c121SKalle Valo u8 cmd; 201e705c121SKalle Valo u8 group_id; 202e705c121SKalle Valo __le16 sequence; 203e705c121SKalle Valo __le16 length; 204e705c121SKalle Valo u8 reserved; 205e705c121SKalle Valo u8 version; 206e705c121SKalle Valo } __packed; 207e705c121SKalle Valo 208e705c121SKalle Valo #define FH_RSCSR_FRAME_SIZE_MSK 0x00003FFF /* bits 0-13 */ 209e705c121SKalle Valo #define FH_RSCSR_FRAME_INVALID 0x55550000 210e705c121SKalle Valo #define FH_RSCSR_FRAME_ALIGN 0x40 211e705c121SKalle Valo 212e705c121SKalle Valo struct iwl_rx_packet { 213e705c121SKalle Valo /* 214e705c121SKalle Valo * The first 4 bytes of the RX frame header contain both the RX frame 215e705c121SKalle Valo * size and some flags. 216e705c121SKalle Valo * Bit fields: 217e705c121SKalle Valo * 31: flag flush RB request 218e705c121SKalle Valo * 30: flag ignore TC (terminal counter) request 219e705c121SKalle Valo * 29: flag fast IRQ request 220e705c121SKalle Valo * 28-14: Reserved 221e705c121SKalle Valo * 13-00: RX frame size 222e705c121SKalle Valo */ 223e705c121SKalle Valo __le32 len_n_flags; 224e705c121SKalle Valo struct iwl_cmd_header hdr; 225e705c121SKalle Valo u8 data[]; 226e705c121SKalle Valo } __packed; 227e705c121SKalle Valo 228e705c121SKalle Valo static inline u32 iwl_rx_packet_len(const struct iwl_rx_packet *pkt) 229e705c121SKalle Valo { 230e705c121SKalle Valo return le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK; 231e705c121SKalle Valo } 232e705c121SKalle Valo 233e705c121SKalle Valo static inline u32 iwl_rx_packet_payload_len(const struct iwl_rx_packet *pkt) 234e705c121SKalle Valo { 235e705c121SKalle Valo return iwl_rx_packet_len(pkt) - sizeof(pkt->hdr); 236e705c121SKalle Valo } 237e705c121SKalle Valo 238e705c121SKalle Valo /** 239e705c121SKalle Valo * enum CMD_MODE - how to send the host commands ? 240e705c121SKalle Valo * 241e705c121SKalle Valo * @CMD_ASYNC: Return right away and don't wait for the response 242e705c121SKalle Valo * @CMD_WANT_SKB: Not valid with CMD_ASYNC. The caller needs the buffer of 243e705c121SKalle Valo * the response. The caller needs to call iwl_free_resp when done. 244e705c121SKalle Valo * @CMD_HIGH_PRIO: The command is high priority - it goes to the front of the 245e705c121SKalle Valo * command queue, but after other high priority commands. Valid only 246e705c121SKalle Valo * with CMD_ASYNC. 247e705c121SKalle Valo * @CMD_SEND_IN_IDLE: The command should be sent even when the trans is idle. 248e705c121SKalle Valo * @CMD_MAKE_TRANS_IDLE: The command response should mark the trans as idle. 249e705c121SKalle Valo * @CMD_WAKE_UP_TRANS: The command response should wake up the trans 250e705c121SKalle Valo * (i.e. mark it as non-idle). 251e705c121SKalle Valo * @CMD_TB_BITMAP_POS: Position of the first bit for the TB bitmap. We need to 252e705c121SKalle Valo * check that we leave enough room for the TBs bitmap which needs 20 bits. 253e705c121SKalle Valo */ 254e705c121SKalle Valo enum CMD_MODE { 255e705c121SKalle Valo CMD_ASYNC = BIT(0), 256e705c121SKalle Valo CMD_WANT_SKB = BIT(1), 257e705c121SKalle Valo CMD_SEND_IN_RFKILL = BIT(2), 258e705c121SKalle Valo CMD_HIGH_PRIO = BIT(3), 259e705c121SKalle Valo CMD_SEND_IN_IDLE = BIT(4), 260e705c121SKalle Valo CMD_MAKE_TRANS_IDLE = BIT(5), 261e705c121SKalle Valo CMD_WAKE_UP_TRANS = BIT(6), 262e705c121SKalle Valo 263e705c121SKalle Valo CMD_TB_BITMAP_POS = 11, 264e705c121SKalle Valo }; 265e705c121SKalle Valo 266e705c121SKalle Valo #define DEF_CMD_PAYLOAD_SIZE 320 267e705c121SKalle Valo 268e705c121SKalle Valo /** 269e705c121SKalle Valo * struct iwl_device_cmd 270e705c121SKalle Valo * 271e705c121SKalle Valo * For allocation of the command and tx queues, this establishes the overall 272e705c121SKalle Valo * size of the largest command we send to uCode, except for commands that 273e705c121SKalle Valo * aren't fully copied and use other TFD space. 274e705c121SKalle Valo */ 275e705c121SKalle Valo struct iwl_device_cmd { 276e705c121SKalle Valo union { 277e705c121SKalle Valo struct { 278e705c121SKalle Valo struct iwl_cmd_header hdr; /* uCode API */ 279e705c121SKalle Valo u8 payload[DEF_CMD_PAYLOAD_SIZE]; 280e705c121SKalle Valo }; 281e705c121SKalle Valo struct { 282e705c121SKalle Valo struct iwl_cmd_header_wide hdr_wide; 283e705c121SKalle Valo u8 payload_wide[DEF_CMD_PAYLOAD_SIZE - 284e705c121SKalle Valo sizeof(struct iwl_cmd_header_wide) + 285e705c121SKalle Valo sizeof(struct iwl_cmd_header)]; 286e705c121SKalle Valo }; 287e705c121SKalle Valo }; 288e705c121SKalle Valo } __packed; 289e705c121SKalle Valo 290e705c121SKalle Valo #define TFD_MAX_PAYLOAD_SIZE (sizeof(struct iwl_device_cmd)) 291e705c121SKalle Valo 292e705c121SKalle Valo /* 293e705c121SKalle Valo * number of transfer buffers (fragments) per transmit frame descriptor; 294e705c121SKalle Valo * this is just the driver's idea, the hardware supports 20 295e705c121SKalle Valo */ 296e705c121SKalle Valo #define IWL_MAX_CMD_TBS_PER_TFD 2 297e705c121SKalle Valo 298e705c121SKalle Valo /** 299e705c121SKalle Valo * struct iwl_hcmd_dataflag - flag for each one of the chunks of the command 300e705c121SKalle Valo * 301e705c121SKalle Valo * @IWL_HCMD_DFL_NOCOPY: By default, the command is copied to the host command's 302e705c121SKalle Valo * ring. The transport layer doesn't map the command's buffer to DMA, but 303e705c121SKalle Valo * rather copies it to a previously allocated DMA buffer. This flag tells 304e705c121SKalle Valo * the transport layer not to copy the command, but to map the existing 305e705c121SKalle Valo * buffer (that is passed in) instead. This saves the memcpy and allows 306e705c121SKalle Valo * commands that are bigger than the fixed buffer to be submitted. 307e705c121SKalle Valo * Note that a TFD entry after a NOCOPY one cannot be a normal copied one. 308e705c121SKalle Valo * @IWL_HCMD_DFL_DUP: Only valid without NOCOPY, duplicate the memory for this 309e705c121SKalle Valo * chunk internally and free it again after the command completes. This 310e705c121SKalle Valo * can (currently) be used only once per command. 311e705c121SKalle Valo * Note that a TFD entry after a DUP one cannot be a normal copied one. 312e705c121SKalle Valo */ 313e705c121SKalle Valo enum iwl_hcmd_dataflag { 314e705c121SKalle Valo IWL_HCMD_DFL_NOCOPY = BIT(0), 315e705c121SKalle Valo IWL_HCMD_DFL_DUP = BIT(1), 316e705c121SKalle Valo }; 317e705c121SKalle Valo 318e705c121SKalle Valo /** 319e705c121SKalle Valo * struct iwl_host_cmd - Host command to the uCode 320e705c121SKalle Valo * 321e705c121SKalle Valo * @data: array of chunks that composes the data of the host command 322e705c121SKalle Valo * @resp_pkt: response packet, if %CMD_WANT_SKB was set 323e705c121SKalle Valo * @_rx_page_order: (internally used to free response packet) 324e705c121SKalle Valo * @_rx_page_addr: (internally used to free response packet) 325e705c121SKalle Valo * @flags: can be CMD_* 326e705c121SKalle Valo * @len: array of the lengths of the chunks in data 327e705c121SKalle Valo * @dataflags: IWL_HCMD_DFL_* 328e705c121SKalle Valo * @id: command id of the host command, for wide commands encoding the 329e705c121SKalle Valo * version and group as well 330e705c121SKalle Valo */ 331e705c121SKalle Valo struct iwl_host_cmd { 332e705c121SKalle Valo const void *data[IWL_MAX_CMD_TBS_PER_TFD]; 333e705c121SKalle Valo struct iwl_rx_packet *resp_pkt; 334e705c121SKalle Valo unsigned long _rx_page_addr; 335e705c121SKalle Valo u32 _rx_page_order; 336e705c121SKalle Valo 337e705c121SKalle Valo u32 flags; 338e705c121SKalle Valo u32 id; 339e705c121SKalle Valo u16 len[IWL_MAX_CMD_TBS_PER_TFD]; 340e705c121SKalle Valo u8 dataflags[IWL_MAX_CMD_TBS_PER_TFD]; 341e705c121SKalle Valo }; 342e705c121SKalle Valo 343e705c121SKalle Valo static inline void iwl_free_resp(struct iwl_host_cmd *cmd) 344e705c121SKalle Valo { 345e705c121SKalle Valo free_pages(cmd->_rx_page_addr, cmd->_rx_page_order); 346e705c121SKalle Valo } 347e705c121SKalle Valo 348e705c121SKalle Valo struct iwl_rx_cmd_buffer { 349e705c121SKalle Valo struct page *_page; 350e705c121SKalle Valo int _offset; 351e705c121SKalle Valo bool _page_stolen; 352e705c121SKalle Valo u32 _rx_page_order; 353e705c121SKalle Valo unsigned int truesize; 354e705c121SKalle Valo }; 355e705c121SKalle Valo 356e705c121SKalle Valo static inline void *rxb_addr(struct iwl_rx_cmd_buffer *r) 357e705c121SKalle Valo { 358e705c121SKalle Valo return (void *)((unsigned long)page_address(r->_page) + r->_offset); 359e705c121SKalle Valo } 360e705c121SKalle Valo 361e705c121SKalle Valo static inline int rxb_offset(struct iwl_rx_cmd_buffer *r) 362e705c121SKalle Valo { 363e705c121SKalle Valo return r->_offset; 364e705c121SKalle Valo } 365e705c121SKalle Valo 366e705c121SKalle Valo static inline struct page *rxb_steal_page(struct iwl_rx_cmd_buffer *r) 367e705c121SKalle Valo { 368e705c121SKalle Valo r->_page_stolen = true; 369e705c121SKalle Valo get_page(r->_page); 370e705c121SKalle Valo return r->_page; 371e705c121SKalle Valo } 372e705c121SKalle Valo 373e705c121SKalle Valo static inline void iwl_free_rxb(struct iwl_rx_cmd_buffer *r) 374e705c121SKalle Valo { 375e705c121SKalle Valo __free_pages(r->_page, r->_rx_page_order); 376e705c121SKalle Valo } 377e705c121SKalle Valo 378e705c121SKalle Valo #define MAX_NO_RECLAIM_CMDS 6 379e705c121SKalle Valo 380e705c121SKalle Valo #define IWL_MASK(lo, hi) ((1 << (hi)) | ((1 << (hi)) - (1 << (lo)))) 381e705c121SKalle Valo 382e705c121SKalle Valo /* 383e705c121SKalle Valo * Maximum number of HW queues the transport layer 384e705c121SKalle Valo * currently supports 385e705c121SKalle Valo */ 386e705c121SKalle Valo #define IWL_MAX_HW_QUEUES 32 387e705c121SKalle Valo #define IWL_MAX_TID_COUNT 8 388e705c121SKalle Valo #define IWL_FRAME_LIMIT 64 389e705c121SKalle Valo #define IWL_MAX_RX_HW_QUEUES 16 390e705c121SKalle Valo 391e705c121SKalle Valo /** 392e705c121SKalle Valo * enum iwl_wowlan_status - WoWLAN image/device status 393e705c121SKalle Valo * @IWL_D3_STATUS_ALIVE: firmware is still running after resume 394e705c121SKalle Valo * @IWL_D3_STATUS_RESET: device was reset while suspended 395e705c121SKalle Valo */ 396e705c121SKalle Valo enum iwl_d3_status { 397e705c121SKalle Valo IWL_D3_STATUS_ALIVE, 398e705c121SKalle Valo IWL_D3_STATUS_RESET, 399e705c121SKalle Valo }; 400e705c121SKalle Valo 401e705c121SKalle Valo /** 402e705c121SKalle Valo * enum iwl_trans_status: transport status flags 403e705c121SKalle Valo * @STATUS_SYNC_HCMD_ACTIVE: a SYNC command is being processed 404e705c121SKalle Valo * @STATUS_DEVICE_ENABLED: APM is enabled 405e705c121SKalle Valo * @STATUS_TPOWER_PMI: the device might be asleep (need to wake it up) 406e705c121SKalle Valo * @STATUS_INT_ENABLED: interrupts are enabled 407e705c121SKalle Valo * @STATUS_RFKILL: the HW RFkill switch is in KILL position 408e705c121SKalle Valo * @STATUS_FW_ERROR: the fw is in error state 409e705c121SKalle Valo * @STATUS_TRANS_GOING_IDLE: shutting down the trans, only special commands 410e705c121SKalle Valo * are sent 411e705c121SKalle Valo * @STATUS_TRANS_IDLE: the trans is idle - general commands are not to be sent 412e705c121SKalle Valo * @STATUS_TRANS_DEAD: trans is dead - avoid any read/write operation 413e705c121SKalle Valo */ 414e705c121SKalle Valo enum iwl_trans_status { 415e705c121SKalle Valo STATUS_SYNC_HCMD_ACTIVE, 416e705c121SKalle Valo STATUS_DEVICE_ENABLED, 417e705c121SKalle Valo STATUS_TPOWER_PMI, 418e705c121SKalle Valo STATUS_INT_ENABLED, 419e705c121SKalle Valo STATUS_RFKILL, 420e705c121SKalle Valo STATUS_FW_ERROR, 421e705c121SKalle Valo STATUS_TRANS_GOING_IDLE, 422e705c121SKalle Valo STATUS_TRANS_IDLE, 423e705c121SKalle Valo STATUS_TRANS_DEAD, 424e705c121SKalle Valo }; 425e705c121SKalle Valo 4266c4fbcbcSEmmanuel Grumbach static inline int 4276c4fbcbcSEmmanuel Grumbach iwl_trans_get_rb_size_order(enum iwl_amsdu_size rb_size) 4286c4fbcbcSEmmanuel Grumbach { 4296c4fbcbcSEmmanuel Grumbach switch (rb_size) { 4306c4fbcbcSEmmanuel Grumbach case IWL_AMSDU_4K: 4316c4fbcbcSEmmanuel Grumbach return get_order(4 * 1024); 4326c4fbcbcSEmmanuel Grumbach case IWL_AMSDU_8K: 4336c4fbcbcSEmmanuel Grumbach return get_order(8 * 1024); 4346c4fbcbcSEmmanuel Grumbach case IWL_AMSDU_12K: 4356c4fbcbcSEmmanuel Grumbach return get_order(12 * 1024); 4366c4fbcbcSEmmanuel Grumbach default: 4376c4fbcbcSEmmanuel Grumbach WARN_ON(1); 4386c4fbcbcSEmmanuel Grumbach return -1; 4396c4fbcbcSEmmanuel Grumbach } 4406c4fbcbcSEmmanuel Grumbach } 4416c4fbcbcSEmmanuel Grumbach 442e705c121SKalle Valo /** 443e705c121SKalle Valo * struct iwl_trans_config - transport configuration 444e705c121SKalle Valo * 445e705c121SKalle Valo * @op_mode: pointer to the upper layer. 446e705c121SKalle Valo * @cmd_queue: the index of the command queue. 447e705c121SKalle Valo * Must be set before start_fw. 448e705c121SKalle Valo * @cmd_fifo: the fifo for host commands 449e705c121SKalle Valo * @cmd_q_wdg_timeout: the timeout of the watchdog timer for the command queue. 450e705c121SKalle Valo * @no_reclaim_cmds: Some devices erroneously don't set the 451e705c121SKalle Valo * SEQ_RX_FRAME bit on some notifications, this is the 452e705c121SKalle Valo * list of such notifications to filter. Max length is 453e705c121SKalle Valo * %MAX_NO_RECLAIM_CMDS. 454e705c121SKalle Valo * @n_no_reclaim_cmds: # of commands in list 4556c4fbcbcSEmmanuel Grumbach * @rx_buf_size: RX buffer size needed for A-MSDUs 456e705c121SKalle Valo * if unset 4k will be the RX buffer size 457e705c121SKalle Valo * @bc_table_dword: set to true if the BC table expects the byte count to be 458e705c121SKalle Valo * in DWORD (as opposed to bytes) 459e705c121SKalle Valo * @scd_set_active: should the transport configure the SCD for HCMD queue 460e705c121SKalle Valo * @wide_cmd_header: firmware supports wide host command header 461e705c121SKalle Valo * @command_names: array of command names, must be 256 entries 462e705c121SKalle Valo * (one for each command); for debugging only 463e705c121SKalle Valo * @sdio_adma_addr: the default address to set for the ADMA in SDIO mode until 464e705c121SKalle Valo * we get the ALIVE from the uCode 465e705c121SKalle Valo */ 466e705c121SKalle Valo struct iwl_trans_config { 467e705c121SKalle Valo struct iwl_op_mode *op_mode; 468e705c121SKalle Valo 469e705c121SKalle Valo u8 cmd_queue; 470e705c121SKalle Valo u8 cmd_fifo; 471e705c121SKalle Valo unsigned int cmd_q_wdg_timeout; 472e705c121SKalle Valo const u8 *no_reclaim_cmds; 473e705c121SKalle Valo unsigned int n_no_reclaim_cmds; 474e705c121SKalle Valo 4756c4fbcbcSEmmanuel Grumbach enum iwl_amsdu_size rx_buf_size; 476e705c121SKalle Valo bool bc_table_dword; 477e705c121SKalle Valo bool scd_set_active; 478e705c121SKalle Valo bool wide_cmd_header; 479e705c121SKalle Valo const char *const *command_names; 480e705c121SKalle Valo 481e705c121SKalle Valo u32 sdio_adma_addr; 482e705c121SKalle Valo }; 483e705c121SKalle Valo 484e705c121SKalle Valo struct iwl_trans_dump_data { 485e705c121SKalle Valo u32 len; 486e705c121SKalle Valo u8 data[]; 487e705c121SKalle Valo }; 488e705c121SKalle Valo 489e705c121SKalle Valo struct iwl_trans; 490e705c121SKalle Valo 491e705c121SKalle Valo struct iwl_trans_txq_scd_cfg { 492e705c121SKalle Valo u8 fifo; 493e705c121SKalle Valo s8 sta_id; 494e705c121SKalle Valo u8 tid; 495e705c121SKalle Valo bool aggregate; 496e705c121SKalle Valo int frame_limit; 497e705c121SKalle Valo }; 498e705c121SKalle Valo 499e705c121SKalle Valo /** 500e705c121SKalle Valo * struct iwl_trans_ops - transport specific operations 501e705c121SKalle Valo * 502e705c121SKalle Valo * All the handlers MUST be implemented 503e705c121SKalle Valo * 504e705c121SKalle Valo * @start_hw: starts the HW. If low_power is true, the NIC needs to be taken 505e705c121SKalle Valo * out of a low power state. From that point on, the HW can send 506e705c121SKalle Valo * interrupts. May sleep. 507e705c121SKalle Valo * @op_mode_leave: Turn off the HW RF kill indication if on 508e705c121SKalle Valo * May sleep 509e705c121SKalle Valo * @start_fw: allocates and inits all the resources for the transport 510e705c121SKalle Valo * layer. Also kick a fw image. 511e705c121SKalle Valo * May sleep 512e705c121SKalle Valo * @fw_alive: called when the fw sends alive notification. If the fw provides 513e705c121SKalle Valo * the SCD base address in SRAM, then provide it here, or 0 otherwise. 514e705c121SKalle Valo * May sleep 515e705c121SKalle Valo * @stop_device: stops the whole device (embedded CPU put to reset) and stops 516e705c121SKalle Valo * the HW. If low_power is true, the NIC will be put in low power state. 517e705c121SKalle Valo * From that point on, the HW will be stopped but will still issue an 518e705c121SKalle Valo * interrupt if the HW RF kill switch is triggered. 519e705c121SKalle Valo * This callback must do the right thing and not crash even if %start_hw() 520e705c121SKalle Valo * was called but not &start_fw(). May sleep. 521e705c121SKalle Valo * @d3_suspend: put the device into the correct mode for WoWLAN during 522e705c121SKalle Valo * suspend. This is optional, if not implemented WoWLAN will not be 523e705c121SKalle Valo * supported. This callback may sleep. 524e705c121SKalle Valo * @d3_resume: resume the device after WoWLAN, enabling the opmode to 525e705c121SKalle Valo * talk to the WoWLAN image to get its status. This is optional, if not 526e705c121SKalle Valo * implemented WoWLAN will not be supported. This callback may sleep. 527e705c121SKalle Valo * @send_cmd:send a host command. Must return -ERFKILL if RFkill is asserted. 528e705c121SKalle Valo * If RFkill is asserted in the middle of a SYNC host command, it must 529e705c121SKalle Valo * return -ERFKILL straight away. 530e705c121SKalle Valo * May sleep only if CMD_ASYNC is not set 531e705c121SKalle Valo * @tx: send an skb 532e705c121SKalle Valo * Must be atomic 533e705c121SKalle Valo * @reclaim: free packet until ssn. Returns a list of freed packets. 534e705c121SKalle Valo * Must be atomic 535e705c121SKalle Valo * @txq_enable: setup a queue. To setup an AC queue, use the 536e705c121SKalle Valo * iwl_trans_ac_txq_enable wrapper. fw_alive must have been called before 537e705c121SKalle Valo * this one. The op_mode must not configure the HCMD queue. The scheduler 538e705c121SKalle Valo * configuration may be %NULL, in which case the hardware will not be 539e705c121SKalle Valo * configured. May sleep. 540e705c121SKalle Valo * @txq_disable: de-configure a Tx queue to send AMPDUs 541e705c121SKalle Valo * Must be atomic 542e705c121SKalle Valo * @wait_tx_queue_empty: wait until tx queues are empty. May sleep. 543e705c121SKalle Valo * @freeze_txq_timer: prevents the timer of the queue from firing until the 544e705c121SKalle Valo * queue is set to awake. Must be atomic. 5450cd58eaaSEmmanuel Grumbach * @block_txq_ptrs: stop updating the write pointers of the Tx queues. Note 5460cd58eaaSEmmanuel Grumbach * that the transport needs to refcount the calls since this function 5470cd58eaaSEmmanuel Grumbach * will be called several times with block = true, and then the queues 5480cd58eaaSEmmanuel Grumbach * need to be unblocked only after the same number of calls with 5490cd58eaaSEmmanuel Grumbach * block = false. 550e705c121SKalle Valo * @write8: write a u8 to a register at offset ofs from the BAR 551e705c121SKalle Valo * @write32: write a u32 to a register at offset ofs from the BAR 552e705c121SKalle Valo * @read32: read a u32 register at offset ofs from the BAR 553e705c121SKalle Valo * @read_prph: read a DWORD from a periphery register 554e705c121SKalle Valo * @write_prph: write a DWORD to a periphery register 555e705c121SKalle Valo * @read_mem: read device's SRAM in DWORD 556e705c121SKalle Valo * @write_mem: write device's SRAM in DWORD. If %buf is %NULL, then the memory 557e705c121SKalle Valo * will be zeroed. 558e705c121SKalle Valo * @configure: configure parameters required by the transport layer from 559e705c121SKalle Valo * the op_mode. May be called several times before start_fw, can't be 560e705c121SKalle Valo * called after that. 561e705c121SKalle Valo * @set_pmi: set the power pmi state 562e705c121SKalle Valo * @grab_nic_access: wake the NIC to be able to access non-HBUS regs. 563e705c121SKalle Valo * Sleeping is not allowed between grab_nic_access and 564e705c121SKalle Valo * release_nic_access. 565e705c121SKalle Valo * @release_nic_access: let the NIC go to sleep. The "flags" parameter 566e705c121SKalle Valo * must be the same one that was sent before to the grab_nic_access. 567e705c121SKalle Valo * @set_bits_mask - set SRAM register according to value and mask. 568e705c121SKalle Valo * @ref: grab a reference to the transport/FW layers, disallowing 569e705c121SKalle Valo * certain low power states 570e705c121SKalle Valo * @unref: release a reference previously taken with @ref. Note that 571e705c121SKalle Valo * initially the reference count is 1, making an initial @unref 572e705c121SKalle Valo * necessary to allow low power states. 573e705c121SKalle Valo * @dump_data: return a vmalloc'ed buffer with debug data, maybe containing last 574e705c121SKalle Valo * TX'ed commands and similar. The buffer will be vfree'd by the caller. 575e705c121SKalle Valo * Note that the transport must fill in the proper file headers. 576e705c121SKalle Valo */ 577e705c121SKalle Valo struct iwl_trans_ops { 578e705c121SKalle Valo 579e705c121SKalle Valo int (*start_hw)(struct iwl_trans *iwl_trans, bool low_power); 580e705c121SKalle Valo void (*op_mode_leave)(struct iwl_trans *iwl_trans); 581e705c121SKalle Valo int (*start_fw)(struct iwl_trans *trans, const struct fw_img *fw, 582e705c121SKalle Valo bool run_in_rfkill); 583e705c121SKalle Valo int (*update_sf)(struct iwl_trans *trans, 584e705c121SKalle Valo struct iwl_sf_region *st_fwrd_space); 585e705c121SKalle Valo void (*fw_alive)(struct iwl_trans *trans, u32 scd_addr); 586e705c121SKalle Valo void (*stop_device)(struct iwl_trans *trans, bool low_power); 587e705c121SKalle Valo 588e705c121SKalle Valo void (*d3_suspend)(struct iwl_trans *trans, bool test); 589e705c121SKalle Valo int (*d3_resume)(struct iwl_trans *trans, enum iwl_d3_status *status, 590e705c121SKalle Valo bool test); 591e705c121SKalle Valo 592e705c121SKalle Valo int (*send_cmd)(struct iwl_trans *trans, struct iwl_host_cmd *cmd); 593e705c121SKalle Valo 594e705c121SKalle Valo int (*tx)(struct iwl_trans *trans, struct sk_buff *skb, 595e705c121SKalle Valo struct iwl_device_cmd *dev_cmd, int queue); 596e705c121SKalle Valo void (*reclaim)(struct iwl_trans *trans, int queue, int ssn, 597e705c121SKalle Valo struct sk_buff_head *skbs); 598e705c121SKalle Valo 599e705c121SKalle Valo void (*txq_enable)(struct iwl_trans *trans, int queue, u16 ssn, 600e705c121SKalle Valo const struct iwl_trans_txq_scd_cfg *cfg, 601e705c121SKalle Valo unsigned int queue_wdg_timeout); 602e705c121SKalle Valo void (*txq_disable)(struct iwl_trans *trans, int queue, 603e705c121SKalle Valo bool configure_scd); 604e705c121SKalle Valo 605e705c121SKalle Valo int (*wait_tx_queue_empty)(struct iwl_trans *trans, u32 txq_bm); 606e705c121SKalle Valo void (*freeze_txq_timer)(struct iwl_trans *trans, unsigned long txqs, 607e705c121SKalle Valo bool freeze); 6080cd58eaaSEmmanuel Grumbach void (*block_txq_ptrs)(struct iwl_trans *trans, bool block); 609e705c121SKalle Valo 610e705c121SKalle Valo void (*write8)(struct iwl_trans *trans, u32 ofs, u8 val); 611e705c121SKalle Valo void (*write32)(struct iwl_trans *trans, u32 ofs, u32 val); 612e705c121SKalle Valo u32 (*read32)(struct iwl_trans *trans, u32 ofs); 613e705c121SKalle Valo u32 (*read_prph)(struct iwl_trans *trans, u32 ofs); 614e705c121SKalle Valo void (*write_prph)(struct iwl_trans *trans, u32 ofs, u32 val); 615e705c121SKalle Valo int (*read_mem)(struct iwl_trans *trans, u32 addr, 616e705c121SKalle Valo void *buf, int dwords); 617e705c121SKalle Valo int (*write_mem)(struct iwl_trans *trans, u32 addr, 618e705c121SKalle Valo const void *buf, int dwords); 619e705c121SKalle Valo void (*configure)(struct iwl_trans *trans, 620e705c121SKalle Valo const struct iwl_trans_config *trans_cfg); 621e705c121SKalle Valo void (*set_pmi)(struct iwl_trans *trans, bool state); 622e705c121SKalle Valo bool (*grab_nic_access)(struct iwl_trans *trans, bool silent, 623e705c121SKalle Valo unsigned long *flags); 624e705c121SKalle Valo void (*release_nic_access)(struct iwl_trans *trans, 625e705c121SKalle Valo unsigned long *flags); 626e705c121SKalle Valo void (*set_bits_mask)(struct iwl_trans *trans, u32 reg, u32 mask, 627e705c121SKalle Valo u32 value); 628e705c121SKalle Valo void (*ref)(struct iwl_trans *trans); 629e705c121SKalle Valo void (*unref)(struct iwl_trans *trans); 630e705c121SKalle Valo int (*suspend)(struct iwl_trans *trans); 631e705c121SKalle Valo void (*resume)(struct iwl_trans *trans); 632e705c121SKalle Valo 633e705c121SKalle Valo struct iwl_trans_dump_data *(*dump_data)(struct iwl_trans *trans, 634e705c121SKalle Valo struct iwl_fw_dbg_trigger_tlv 635e705c121SKalle Valo *trigger); 636e705c121SKalle Valo }; 637e705c121SKalle Valo 638e705c121SKalle Valo /** 639e705c121SKalle Valo * enum iwl_trans_state - state of the transport layer 640e705c121SKalle Valo * 641e705c121SKalle Valo * @IWL_TRANS_NO_FW: no fw has sent an alive response 642e705c121SKalle Valo * @IWL_TRANS_FW_ALIVE: a fw has sent an alive response 643e705c121SKalle Valo */ 644e705c121SKalle Valo enum iwl_trans_state { 645e705c121SKalle Valo IWL_TRANS_NO_FW = 0, 646e705c121SKalle Valo IWL_TRANS_FW_ALIVE = 1, 647e705c121SKalle Valo }; 648e705c121SKalle Valo 649e705c121SKalle Valo /** 650e705c121SKalle Valo * enum iwl_d0i3_mode - d0i3 mode 651e705c121SKalle Valo * 652e705c121SKalle Valo * @IWL_D0I3_MODE_OFF - d0i3 is disabled 653e705c121SKalle Valo * @IWL_D0I3_MODE_ON_IDLE - enter d0i3 when device is idle 654e705c121SKalle Valo * (e.g. no active references) 655e705c121SKalle Valo * @IWL_D0I3_MODE_ON_SUSPEND - enter d0i3 only on suspend 656e705c121SKalle Valo * (in case of 'any' trigger) 657e705c121SKalle Valo */ 658e705c121SKalle Valo enum iwl_d0i3_mode { 659e705c121SKalle Valo IWL_D0I3_MODE_OFF = 0, 660e705c121SKalle Valo IWL_D0I3_MODE_ON_IDLE, 661e705c121SKalle Valo IWL_D0I3_MODE_ON_SUSPEND, 662e705c121SKalle Valo }; 663e705c121SKalle Valo 664e705c121SKalle Valo /** 665e705c121SKalle Valo * struct iwl_trans - transport common data 666e705c121SKalle Valo * 667e705c121SKalle Valo * @ops - pointer to iwl_trans_ops 668e705c121SKalle Valo * @op_mode - pointer to the op_mode 669e705c121SKalle Valo * @cfg - pointer to the configuration 670e705c121SKalle Valo * @status: a bit-mask of transport status flags 671e705c121SKalle Valo * @dev - pointer to struct device * that represents the device 672e705c121SKalle Valo * @max_skb_frags: maximum number of fragments an SKB can have when transmitted. 673e705c121SKalle Valo * 0 indicates that frag SKBs (NETIF_F_SG) aren't supported. 674e705c121SKalle Valo * @hw_id: a u32 with the ID of the device / sub-device. 675e705c121SKalle Valo * Set during transport allocation. 676e705c121SKalle Valo * @hw_id_str: a string with info about HW ID. Set during transport allocation. 677e705c121SKalle Valo * @pm_support: set to true in start_hw if link pm is supported 678e705c121SKalle Valo * @ltr_enabled: set to true if the LTR is enabled 679e705c121SKalle Valo * @num_rx_queues: number of RX queues allocated by the transport; 680e705c121SKalle Valo * the transport must set this before calling iwl_drv_start() 681e705c121SKalle Valo * @dev_cmd_pool: pool for Tx cmd allocation - for internal use only. 682e705c121SKalle Valo * The user should use iwl_trans_{alloc,free}_tx_cmd. 683e705c121SKalle Valo * @dev_cmd_headroom: room needed for the transport's private use before the 684e705c121SKalle Valo * device_cmd for Tx - for internal use only 685e705c121SKalle Valo * The user should use iwl_trans_{alloc,free}_tx_cmd. 686e705c121SKalle Valo * @rx_mpdu_cmd: MPDU RX command ID, must be assigned by opmode before 687e705c121SKalle Valo * starting the firmware, used for tracing 688e705c121SKalle Valo * @rx_mpdu_cmd_hdr_size: used for tracing, amount of data before the 689e705c121SKalle Valo * start of the 802.11 header in the @rx_mpdu_cmd 690e705c121SKalle Valo * @dflt_pwr_limit: default power limit fetched from the platform (ACPI) 691e705c121SKalle Valo * @dbg_dest_tlv: points to the destination TLV for debug 692e705c121SKalle Valo * @dbg_conf_tlv: array of pointers to configuration TLVs for debug 693e705c121SKalle Valo * @dbg_trigger_tlv: array of pointers to triggers TLVs for debug 694e705c121SKalle Valo * @dbg_dest_reg_num: num of reg_ops in %dbg_dest_tlv 695e705c121SKalle Valo * @paging_req_addr: The location were the FW will upload / download the pages 696e705c121SKalle Valo * from. The address is set by the opmode 697e705c121SKalle Valo * @paging_db: Pointer to the opmode paging data base, the pointer is set by 698e705c121SKalle Valo * the opmode. 699e705c121SKalle Valo * @paging_download_buf: Buffer used for copying all of the pages before 700e705c121SKalle Valo * downloading them to the FW. The buffer is allocated in the opmode 701e705c121SKalle Valo */ 702e705c121SKalle Valo struct iwl_trans { 703e705c121SKalle Valo const struct iwl_trans_ops *ops; 704e705c121SKalle Valo struct iwl_op_mode *op_mode; 705e705c121SKalle Valo const struct iwl_cfg *cfg; 706e705c121SKalle Valo enum iwl_trans_state state; 707e705c121SKalle Valo unsigned long status; 708e705c121SKalle Valo 709e705c121SKalle Valo struct device *dev; 710e705c121SKalle Valo u32 max_skb_frags; 711e705c121SKalle Valo u32 hw_rev; 712e705c121SKalle Valo u32 hw_id; 713e705c121SKalle Valo char hw_id_str[52]; 714e705c121SKalle Valo 715e705c121SKalle Valo u8 rx_mpdu_cmd, rx_mpdu_cmd_hdr_size; 716e705c121SKalle Valo 717e705c121SKalle Valo bool pm_support; 718e705c121SKalle Valo bool ltr_enabled; 719e705c121SKalle Valo 720e705c121SKalle Valo u8 num_rx_queues; 721e705c121SKalle Valo 722e705c121SKalle Valo /* The following fields are internal only */ 723e705c121SKalle Valo struct kmem_cache *dev_cmd_pool; 724e705c121SKalle Valo size_t dev_cmd_headroom; 725e705c121SKalle Valo char dev_cmd_pool_name[50]; 726e705c121SKalle Valo 727e705c121SKalle Valo struct dentry *dbgfs_dir; 728e705c121SKalle Valo 729e705c121SKalle Valo #ifdef CONFIG_LOCKDEP 730e705c121SKalle Valo struct lockdep_map sync_cmd_lockdep_map; 731e705c121SKalle Valo #endif 732e705c121SKalle Valo 733e705c121SKalle Valo u64 dflt_pwr_limit; 734e705c121SKalle Valo 735e705c121SKalle Valo const struct iwl_fw_dbg_dest_tlv *dbg_dest_tlv; 736e705c121SKalle Valo const struct iwl_fw_dbg_conf_tlv *dbg_conf_tlv[FW_DBG_CONF_MAX]; 737e705c121SKalle Valo struct iwl_fw_dbg_trigger_tlv * const *dbg_trigger_tlv; 738e705c121SKalle Valo u8 dbg_dest_reg_num; 739e705c121SKalle Valo 740e705c121SKalle Valo /* 741e705c121SKalle Valo * Paging parameters - All of the parameters should be set by the 742e705c121SKalle Valo * opmode when paging is enabled 743e705c121SKalle Valo */ 744e705c121SKalle Valo u32 paging_req_addr; 745e705c121SKalle Valo struct iwl_fw_paging *paging_db; 746e705c121SKalle Valo void *paging_download_buf; 747e705c121SKalle Valo 748e705c121SKalle Valo enum iwl_d0i3_mode d0i3_mode; 749e705c121SKalle Valo 750e705c121SKalle Valo bool wowlan_d0i3; 751e705c121SKalle Valo 752e705c121SKalle Valo /* pointer to trans specific struct */ 753e705c121SKalle Valo /*Ensure that this pointer will always be aligned to sizeof pointer */ 754e705c121SKalle Valo char trans_specific[0] __aligned(sizeof(void *)); 755e705c121SKalle Valo }; 756e705c121SKalle Valo 757e705c121SKalle Valo static inline void iwl_trans_configure(struct iwl_trans *trans, 758e705c121SKalle Valo const struct iwl_trans_config *trans_cfg) 759e705c121SKalle Valo { 760e705c121SKalle Valo trans->op_mode = trans_cfg->op_mode; 761e705c121SKalle Valo 762e705c121SKalle Valo trans->ops->configure(trans, trans_cfg); 763e705c121SKalle Valo } 764e705c121SKalle Valo 765e705c121SKalle Valo static inline int _iwl_trans_start_hw(struct iwl_trans *trans, bool low_power) 766e705c121SKalle Valo { 767e705c121SKalle Valo might_sleep(); 768e705c121SKalle Valo 769e705c121SKalle Valo return trans->ops->start_hw(trans, low_power); 770e705c121SKalle Valo } 771e705c121SKalle Valo 772e705c121SKalle Valo static inline int iwl_trans_start_hw(struct iwl_trans *trans) 773e705c121SKalle Valo { 774e705c121SKalle Valo return trans->ops->start_hw(trans, true); 775e705c121SKalle Valo } 776e705c121SKalle Valo 777e705c121SKalle Valo static inline void iwl_trans_op_mode_leave(struct iwl_trans *trans) 778e705c121SKalle Valo { 779e705c121SKalle Valo might_sleep(); 780e705c121SKalle Valo 781e705c121SKalle Valo if (trans->ops->op_mode_leave) 782e705c121SKalle Valo trans->ops->op_mode_leave(trans); 783e705c121SKalle Valo 784e705c121SKalle Valo trans->op_mode = NULL; 785e705c121SKalle Valo 786e705c121SKalle Valo trans->state = IWL_TRANS_NO_FW; 787e705c121SKalle Valo } 788e705c121SKalle Valo 789e705c121SKalle Valo static inline void iwl_trans_fw_alive(struct iwl_trans *trans, u32 scd_addr) 790e705c121SKalle Valo { 791e705c121SKalle Valo might_sleep(); 792e705c121SKalle Valo 793e705c121SKalle Valo trans->state = IWL_TRANS_FW_ALIVE; 794e705c121SKalle Valo 795e705c121SKalle Valo trans->ops->fw_alive(trans, scd_addr); 796e705c121SKalle Valo } 797e705c121SKalle Valo 798e705c121SKalle Valo static inline int iwl_trans_start_fw(struct iwl_trans *trans, 799e705c121SKalle Valo const struct fw_img *fw, 800e705c121SKalle Valo bool run_in_rfkill) 801e705c121SKalle Valo { 802e705c121SKalle Valo might_sleep(); 803e705c121SKalle Valo 804e705c121SKalle Valo WARN_ON_ONCE(!trans->rx_mpdu_cmd); 805e705c121SKalle Valo 806e705c121SKalle Valo clear_bit(STATUS_FW_ERROR, &trans->status); 807e705c121SKalle Valo return trans->ops->start_fw(trans, fw, run_in_rfkill); 808e705c121SKalle Valo } 809e705c121SKalle Valo 810e705c121SKalle Valo static inline int iwl_trans_update_sf(struct iwl_trans *trans, 811e705c121SKalle Valo struct iwl_sf_region *st_fwrd_space) 812e705c121SKalle Valo { 813e705c121SKalle Valo might_sleep(); 814e705c121SKalle Valo 815e705c121SKalle Valo if (trans->ops->update_sf) 816e705c121SKalle Valo return trans->ops->update_sf(trans, st_fwrd_space); 817e705c121SKalle Valo 818e705c121SKalle Valo return 0; 819e705c121SKalle Valo } 820e705c121SKalle Valo 821e705c121SKalle Valo static inline void _iwl_trans_stop_device(struct iwl_trans *trans, 822e705c121SKalle Valo bool low_power) 823e705c121SKalle Valo { 824e705c121SKalle Valo might_sleep(); 825e705c121SKalle Valo 826e705c121SKalle Valo trans->ops->stop_device(trans, low_power); 827e705c121SKalle Valo 828e705c121SKalle Valo trans->state = IWL_TRANS_NO_FW; 829e705c121SKalle Valo } 830e705c121SKalle Valo 831e705c121SKalle Valo static inline void iwl_trans_stop_device(struct iwl_trans *trans) 832e705c121SKalle Valo { 833e705c121SKalle Valo _iwl_trans_stop_device(trans, true); 834e705c121SKalle Valo } 835e705c121SKalle Valo 836e705c121SKalle Valo static inline void iwl_trans_d3_suspend(struct iwl_trans *trans, bool test) 837e705c121SKalle Valo { 838e705c121SKalle Valo might_sleep(); 839e705c121SKalle Valo if (trans->ops->d3_suspend) 840e705c121SKalle Valo trans->ops->d3_suspend(trans, test); 841e705c121SKalle Valo } 842e705c121SKalle Valo 843e705c121SKalle Valo static inline int iwl_trans_d3_resume(struct iwl_trans *trans, 844e705c121SKalle Valo enum iwl_d3_status *status, 845e705c121SKalle Valo bool test) 846e705c121SKalle Valo { 847e705c121SKalle Valo might_sleep(); 848e705c121SKalle Valo if (!trans->ops->d3_resume) 849e705c121SKalle Valo return 0; 850e705c121SKalle Valo 851e705c121SKalle Valo return trans->ops->d3_resume(trans, status, test); 852e705c121SKalle Valo } 853e705c121SKalle Valo 854e705c121SKalle Valo static inline void iwl_trans_ref(struct iwl_trans *trans) 855e705c121SKalle Valo { 856e705c121SKalle Valo if (trans->ops->ref) 857e705c121SKalle Valo trans->ops->ref(trans); 858e705c121SKalle Valo } 859e705c121SKalle Valo 860e705c121SKalle Valo static inline void iwl_trans_unref(struct iwl_trans *trans) 861e705c121SKalle Valo { 862e705c121SKalle Valo if (trans->ops->unref) 863e705c121SKalle Valo trans->ops->unref(trans); 864e705c121SKalle Valo } 865e705c121SKalle Valo 866e705c121SKalle Valo static inline int iwl_trans_suspend(struct iwl_trans *trans) 867e705c121SKalle Valo { 868e705c121SKalle Valo if (!trans->ops->suspend) 869e705c121SKalle Valo return 0; 870e705c121SKalle Valo 871e705c121SKalle Valo return trans->ops->suspend(trans); 872e705c121SKalle Valo } 873e705c121SKalle Valo 874e705c121SKalle Valo static inline void iwl_trans_resume(struct iwl_trans *trans) 875e705c121SKalle Valo { 876e705c121SKalle Valo if (trans->ops->resume) 877e705c121SKalle Valo trans->ops->resume(trans); 878e705c121SKalle Valo } 879e705c121SKalle Valo 880e705c121SKalle Valo static inline struct iwl_trans_dump_data * 881e705c121SKalle Valo iwl_trans_dump_data(struct iwl_trans *trans, 882e705c121SKalle Valo struct iwl_fw_dbg_trigger_tlv *trigger) 883e705c121SKalle Valo { 884e705c121SKalle Valo if (!trans->ops->dump_data) 885e705c121SKalle Valo return NULL; 886e705c121SKalle Valo return trans->ops->dump_data(trans, trigger); 887e705c121SKalle Valo } 888e705c121SKalle Valo 889e705c121SKalle Valo static inline int iwl_trans_send_cmd(struct iwl_trans *trans, 890e705c121SKalle Valo struct iwl_host_cmd *cmd) 891e705c121SKalle Valo { 892e705c121SKalle Valo int ret; 893e705c121SKalle Valo 894e705c121SKalle Valo if (unlikely(!(cmd->flags & CMD_SEND_IN_RFKILL) && 895e705c121SKalle Valo test_bit(STATUS_RFKILL, &trans->status))) 896e705c121SKalle Valo return -ERFKILL; 897e705c121SKalle Valo 898e705c121SKalle Valo if (unlikely(test_bit(STATUS_FW_ERROR, &trans->status))) 899e705c121SKalle Valo return -EIO; 900e705c121SKalle Valo 901e705c121SKalle Valo if (unlikely(trans->state != IWL_TRANS_FW_ALIVE)) { 902e705c121SKalle Valo IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state); 903e705c121SKalle Valo return -EIO; 904e705c121SKalle Valo } 905e705c121SKalle Valo 906e705c121SKalle Valo if (!(cmd->flags & CMD_ASYNC)) 907e705c121SKalle Valo lock_map_acquire_read(&trans->sync_cmd_lockdep_map); 908e705c121SKalle Valo 909e705c121SKalle Valo ret = trans->ops->send_cmd(trans, cmd); 910e705c121SKalle Valo 911e705c121SKalle Valo if (!(cmd->flags & CMD_ASYNC)) 912e705c121SKalle Valo lock_map_release(&trans->sync_cmd_lockdep_map); 913e705c121SKalle Valo 914e705c121SKalle Valo return ret; 915e705c121SKalle Valo } 916e705c121SKalle Valo 917e705c121SKalle Valo static inline struct iwl_device_cmd * 918e705c121SKalle Valo iwl_trans_alloc_tx_cmd(struct iwl_trans *trans) 919e705c121SKalle Valo { 920e705c121SKalle Valo u8 *dev_cmd_ptr = kmem_cache_alloc(trans->dev_cmd_pool, GFP_ATOMIC); 921e705c121SKalle Valo 922e705c121SKalle Valo if (unlikely(dev_cmd_ptr == NULL)) 923e705c121SKalle Valo return NULL; 924e705c121SKalle Valo 925e705c121SKalle Valo return (struct iwl_device_cmd *) 926e705c121SKalle Valo (dev_cmd_ptr + trans->dev_cmd_headroom); 927e705c121SKalle Valo } 928e705c121SKalle Valo 929e705c121SKalle Valo static inline void iwl_trans_free_tx_cmd(struct iwl_trans *trans, 930e705c121SKalle Valo struct iwl_device_cmd *dev_cmd) 931e705c121SKalle Valo { 932e705c121SKalle Valo u8 *dev_cmd_ptr = (u8 *)dev_cmd - trans->dev_cmd_headroom; 933e705c121SKalle Valo 934e705c121SKalle Valo kmem_cache_free(trans->dev_cmd_pool, dev_cmd_ptr); 935e705c121SKalle Valo } 936e705c121SKalle Valo 937e705c121SKalle Valo static inline int iwl_trans_tx(struct iwl_trans *trans, struct sk_buff *skb, 938e705c121SKalle Valo struct iwl_device_cmd *dev_cmd, int queue) 939e705c121SKalle Valo { 940e705c121SKalle Valo if (unlikely(test_bit(STATUS_FW_ERROR, &trans->status))) 941e705c121SKalle Valo return -EIO; 942e705c121SKalle Valo 943e705c121SKalle Valo if (unlikely(trans->state != IWL_TRANS_FW_ALIVE)) 944e705c121SKalle Valo IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state); 945e705c121SKalle Valo 946e705c121SKalle Valo return trans->ops->tx(trans, skb, dev_cmd, queue); 947e705c121SKalle Valo } 948e705c121SKalle Valo 949e705c121SKalle Valo static inline void iwl_trans_reclaim(struct iwl_trans *trans, int queue, 950e705c121SKalle Valo int ssn, struct sk_buff_head *skbs) 951e705c121SKalle Valo { 952e705c121SKalle Valo if (unlikely(trans->state != IWL_TRANS_FW_ALIVE)) 953e705c121SKalle Valo IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state); 954e705c121SKalle Valo 955e705c121SKalle Valo trans->ops->reclaim(trans, queue, ssn, skbs); 956e705c121SKalle Valo } 957e705c121SKalle Valo 958e705c121SKalle Valo static inline void iwl_trans_txq_disable(struct iwl_trans *trans, int queue, 959e705c121SKalle Valo bool configure_scd) 960e705c121SKalle Valo { 961e705c121SKalle Valo trans->ops->txq_disable(trans, queue, configure_scd); 962e705c121SKalle Valo } 963e705c121SKalle Valo 964e705c121SKalle Valo static inline void 965e705c121SKalle Valo iwl_trans_txq_enable_cfg(struct iwl_trans *trans, int queue, u16 ssn, 966e705c121SKalle Valo const struct iwl_trans_txq_scd_cfg *cfg, 967e705c121SKalle Valo unsigned int queue_wdg_timeout) 968e705c121SKalle Valo { 969e705c121SKalle Valo might_sleep(); 970e705c121SKalle Valo 971e705c121SKalle Valo if (unlikely((trans->state != IWL_TRANS_FW_ALIVE))) 972e705c121SKalle Valo IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state); 973e705c121SKalle Valo 974e705c121SKalle Valo trans->ops->txq_enable(trans, queue, ssn, cfg, queue_wdg_timeout); 975e705c121SKalle Valo } 976e705c121SKalle Valo 977e705c121SKalle Valo static inline void iwl_trans_txq_enable(struct iwl_trans *trans, int queue, 978e705c121SKalle Valo int fifo, int sta_id, int tid, 979e705c121SKalle Valo int frame_limit, u16 ssn, 980e705c121SKalle Valo unsigned int queue_wdg_timeout) 981e705c121SKalle Valo { 982e705c121SKalle Valo struct iwl_trans_txq_scd_cfg cfg = { 983e705c121SKalle Valo .fifo = fifo, 984e705c121SKalle Valo .sta_id = sta_id, 985e705c121SKalle Valo .tid = tid, 986e705c121SKalle Valo .frame_limit = frame_limit, 987e705c121SKalle Valo .aggregate = sta_id >= 0, 988e705c121SKalle Valo }; 989e705c121SKalle Valo 990e705c121SKalle Valo iwl_trans_txq_enable_cfg(trans, queue, ssn, &cfg, queue_wdg_timeout); 991e705c121SKalle Valo } 992e705c121SKalle Valo 993e705c121SKalle Valo static inline 994e705c121SKalle Valo void iwl_trans_ac_txq_enable(struct iwl_trans *trans, int queue, int fifo, 995e705c121SKalle Valo unsigned int queue_wdg_timeout) 996e705c121SKalle Valo { 997e705c121SKalle Valo struct iwl_trans_txq_scd_cfg cfg = { 998e705c121SKalle Valo .fifo = fifo, 999e705c121SKalle Valo .sta_id = -1, 1000e705c121SKalle Valo .tid = IWL_MAX_TID_COUNT, 1001e705c121SKalle Valo .frame_limit = IWL_FRAME_LIMIT, 1002e705c121SKalle Valo .aggregate = false, 1003e705c121SKalle Valo }; 1004e705c121SKalle Valo 1005e705c121SKalle Valo iwl_trans_txq_enable_cfg(trans, queue, 0, &cfg, queue_wdg_timeout); 1006e705c121SKalle Valo } 1007e705c121SKalle Valo 1008e705c121SKalle Valo static inline void iwl_trans_freeze_txq_timer(struct iwl_trans *trans, 1009e705c121SKalle Valo unsigned long txqs, 1010e705c121SKalle Valo bool freeze) 1011e705c121SKalle Valo { 1012e705c121SKalle Valo if (unlikely(trans->state != IWL_TRANS_FW_ALIVE)) 1013e705c121SKalle Valo IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state); 1014e705c121SKalle Valo 1015e705c121SKalle Valo if (trans->ops->freeze_txq_timer) 1016e705c121SKalle Valo trans->ops->freeze_txq_timer(trans, txqs, freeze); 1017e705c121SKalle Valo } 1018e705c121SKalle Valo 10190cd58eaaSEmmanuel Grumbach static inline void iwl_trans_block_txq_ptrs(struct iwl_trans *trans, 10200cd58eaaSEmmanuel Grumbach bool block) 10210cd58eaaSEmmanuel Grumbach { 10220cd58eaaSEmmanuel Grumbach if (unlikely(trans->state != IWL_TRANS_FW_ALIVE)) 10230cd58eaaSEmmanuel Grumbach IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state); 10240cd58eaaSEmmanuel Grumbach 10250cd58eaaSEmmanuel Grumbach if (trans->ops->block_txq_ptrs) 10260cd58eaaSEmmanuel Grumbach trans->ops->block_txq_ptrs(trans, block); 10270cd58eaaSEmmanuel Grumbach } 10280cd58eaaSEmmanuel Grumbach 1029e705c121SKalle Valo static inline int iwl_trans_wait_tx_queue_empty(struct iwl_trans *trans, 1030e705c121SKalle Valo u32 txqs) 1031e705c121SKalle Valo { 1032e705c121SKalle Valo if (unlikely(trans->state != IWL_TRANS_FW_ALIVE)) 1033e705c121SKalle Valo IWL_ERR(trans, "%s bad state = %d\n", __func__, trans->state); 1034e705c121SKalle Valo 1035e705c121SKalle Valo return trans->ops->wait_tx_queue_empty(trans, txqs); 1036e705c121SKalle Valo } 1037e705c121SKalle Valo 1038e705c121SKalle Valo static inline void iwl_trans_write8(struct iwl_trans *trans, u32 ofs, u8 val) 1039e705c121SKalle Valo { 1040e705c121SKalle Valo trans->ops->write8(trans, ofs, val); 1041e705c121SKalle Valo } 1042e705c121SKalle Valo 1043e705c121SKalle Valo static inline void iwl_trans_write32(struct iwl_trans *trans, u32 ofs, u32 val) 1044e705c121SKalle Valo { 1045e705c121SKalle Valo trans->ops->write32(trans, ofs, val); 1046e705c121SKalle Valo } 1047e705c121SKalle Valo 1048e705c121SKalle Valo static inline u32 iwl_trans_read32(struct iwl_trans *trans, u32 ofs) 1049e705c121SKalle Valo { 1050e705c121SKalle Valo return trans->ops->read32(trans, ofs); 1051e705c121SKalle Valo } 1052e705c121SKalle Valo 1053e705c121SKalle Valo static inline u32 iwl_trans_read_prph(struct iwl_trans *trans, u32 ofs) 1054e705c121SKalle Valo { 1055e705c121SKalle Valo return trans->ops->read_prph(trans, ofs); 1056e705c121SKalle Valo } 1057e705c121SKalle Valo 1058e705c121SKalle Valo static inline void iwl_trans_write_prph(struct iwl_trans *trans, u32 ofs, 1059e705c121SKalle Valo u32 val) 1060e705c121SKalle Valo { 1061e705c121SKalle Valo return trans->ops->write_prph(trans, ofs, val); 1062e705c121SKalle Valo } 1063e705c121SKalle Valo 1064e705c121SKalle Valo static inline int iwl_trans_read_mem(struct iwl_trans *trans, u32 addr, 1065e705c121SKalle Valo void *buf, int dwords) 1066e705c121SKalle Valo { 1067e705c121SKalle Valo return trans->ops->read_mem(trans, addr, buf, dwords); 1068e705c121SKalle Valo } 1069e705c121SKalle Valo 1070e705c121SKalle Valo #define iwl_trans_read_mem_bytes(trans, addr, buf, bufsize) \ 1071e705c121SKalle Valo do { \ 1072e705c121SKalle Valo if (__builtin_constant_p(bufsize)) \ 1073e705c121SKalle Valo BUILD_BUG_ON((bufsize) % sizeof(u32)); \ 1074e705c121SKalle Valo iwl_trans_read_mem(trans, addr, buf, (bufsize) / sizeof(u32));\ 1075e705c121SKalle Valo } while (0) 1076e705c121SKalle Valo 1077e705c121SKalle Valo static inline u32 iwl_trans_read_mem32(struct iwl_trans *trans, u32 addr) 1078e705c121SKalle Valo { 1079e705c121SKalle Valo u32 value; 1080e705c121SKalle Valo 1081e705c121SKalle Valo if (WARN_ON(iwl_trans_read_mem(trans, addr, &value, 1))) 1082e705c121SKalle Valo return 0xa5a5a5a5; 1083e705c121SKalle Valo 1084e705c121SKalle Valo return value; 1085e705c121SKalle Valo } 1086e705c121SKalle Valo 1087e705c121SKalle Valo static inline int iwl_trans_write_mem(struct iwl_trans *trans, u32 addr, 1088e705c121SKalle Valo const void *buf, int dwords) 1089e705c121SKalle Valo { 1090e705c121SKalle Valo return trans->ops->write_mem(trans, addr, buf, dwords); 1091e705c121SKalle Valo } 1092e705c121SKalle Valo 1093e705c121SKalle Valo static inline u32 iwl_trans_write_mem32(struct iwl_trans *trans, u32 addr, 1094e705c121SKalle Valo u32 val) 1095e705c121SKalle Valo { 1096e705c121SKalle Valo return iwl_trans_write_mem(trans, addr, &val, 1); 1097e705c121SKalle Valo } 1098e705c121SKalle Valo 1099e705c121SKalle Valo static inline void iwl_trans_set_pmi(struct iwl_trans *trans, bool state) 1100e705c121SKalle Valo { 1101e705c121SKalle Valo if (trans->ops->set_pmi) 1102e705c121SKalle Valo trans->ops->set_pmi(trans, state); 1103e705c121SKalle Valo } 1104e705c121SKalle Valo 1105e705c121SKalle Valo static inline void 1106e705c121SKalle Valo iwl_trans_set_bits_mask(struct iwl_trans *trans, u32 reg, u32 mask, u32 value) 1107e705c121SKalle Valo { 1108e705c121SKalle Valo trans->ops->set_bits_mask(trans, reg, mask, value); 1109e705c121SKalle Valo } 1110e705c121SKalle Valo 1111e705c121SKalle Valo #define iwl_trans_grab_nic_access(trans, silent, flags) \ 1112e705c121SKalle Valo __cond_lock(nic_access, \ 1113e705c121SKalle Valo likely((trans)->ops->grab_nic_access(trans, silent, flags))) 1114e705c121SKalle Valo 1115e705c121SKalle Valo static inline void __releases(nic_access) 1116e705c121SKalle Valo iwl_trans_release_nic_access(struct iwl_trans *trans, unsigned long *flags) 1117e705c121SKalle Valo { 1118e705c121SKalle Valo trans->ops->release_nic_access(trans, flags); 1119e705c121SKalle Valo __release(nic_access); 1120e705c121SKalle Valo } 1121e705c121SKalle Valo 1122e705c121SKalle Valo static inline void iwl_trans_fw_error(struct iwl_trans *trans) 1123e705c121SKalle Valo { 1124e705c121SKalle Valo if (WARN_ON_ONCE(!trans->op_mode)) 1125e705c121SKalle Valo return; 1126e705c121SKalle Valo 1127e705c121SKalle Valo /* prevent double restarts due to the same erroneous FW */ 1128e705c121SKalle Valo if (!test_and_set_bit(STATUS_FW_ERROR, &trans->status)) 1129e705c121SKalle Valo iwl_op_mode_nic_error(trans->op_mode); 1130e705c121SKalle Valo } 1131e705c121SKalle Valo 1132e705c121SKalle Valo /***************************************************** 1133e705c121SKalle Valo * transport helper functions 1134e705c121SKalle Valo *****************************************************/ 1135e705c121SKalle Valo struct iwl_trans *iwl_trans_alloc(unsigned int priv_size, 1136e705c121SKalle Valo struct device *dev, 1137e705c121SKalle Valo const struct iwl_cfg *cfg, 1138e705c121SKalle Valo const struct iwl_trans_ops *ops, 1139e705c121SKalle Valo size_t dev_cmd_headroom); 1140e705c121SKalle Valo void iwl_trans_free(struct iwl_trans *trans); 1141e705c121SKalle Valo 1142e705c121SKalle Valo /***************************************************** 1143e705c121SKalle Valo * driver (transport) register/unregister functions 1144e705c121SKalle Valo ******************************************************/ 1145e705c121SKalle Valo int __must_check iwl_pci_register_driver(void); 1146e705c121SKalle Valo void iwl_pci_unregister_driver(void); 1147e705c121SKalle Valo 1148e705c121SKalle Valo #endif /* __iwl_trans_h__ */ 1149