Quelle iwl-fh.h
Sprache: C
/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
/*
* Copyright ( C ) 2005 - 2014 , 2018 - 2021 , 2023 - 2025 Intel Corporation
* Copyright ( C ) 2015 - 2017 Intel Deutschland GmbH
*/
#ifndef __iwl_fh_h__
#define __iwl_fh_h__
#include <linux/types.h>
#include <linux/bitfield.h>
#include "iwl-trans.h"
/****************************/
/* Flow Handler Definitions */
/****************************/
/*
* This I / O area is directly read / writable by driver ( e . g . Linux uses writel ( ) )
* Addresses are offsets from device ' s PCI hardware base address .
*/
#define FH_MEM_LOWER_BOUND (0 x1000)
#define FH_MEM_UPPER_BOUND (0 x2000)
#define FH_MEM_LOWER_BOUND_GEN2 (0 xa06000)
#define FH_MEM_UPPER_BOUND_GEN2 (0 xa08000)
/*
* Keep - Warm ( KW ) buffer base address .
*
* Driver must allocate a 4 KByte buffer that is for keeping the
* host DRAM powered on ( via dummy accesses to DRAM ) to maintain low - latency
* DRAM access when doing Txing or Rxing . The dummy accesses prevent host
* from going into a power - savings mode that would cause higher DRAM latency ,
* and possible data over / under - runs , before all Tx / Rx is complete .
*
* Driver loads FH_KW_MEM_ADDR_REG with the physical address ( bits 35 : 4 )
* of the buffer , which must be 4 K aligned . Once this is set up , the device
* automatically invokes keep - warm accesses when normal accesses might not
* be sufficient to maintain fast DRAM response .
*
* Bit fields :
* 31 - 0 : Keep - warm buffer physical base address [ 35 : 4 ] , must be 4 K aligned
*/
#define FH_KW_MEM_ADDR_REG (FH_MEM_LOWER_BOUND + 0 x97C)
/*
* TFD Circular Buffers Base ( CBBC ) addresses
*
* Device has 16 base pointer registers , one for each of 16 host - DRAM - resident
* circular buffers ( CBs / queues ) containing Transmit Frame Descriptors ( TFDs )
* ( see struct iwl_tfd_frame ) . These 16 pointer registers are offset by 0 x04
* bytes from one another . Each TFD circular buffer in DRAM must be 256 - byte
* aligned ( address bits 0 - 7 must be 0 ) .
* Later devices have 20 ( 5000 series ) or 30 ( higher ) queues , but the registers
* for them are in different places .
*
* Bit fields in each pointer register :
* 27 - 0 : TFD CB physical base address [ 35 : 8 ] , must be 256 - byte aligned
*/
#define FH_MEM_CBBC_0_15_LOWER_BOUND (FH_MEM_LOWER_BOUND + 0 x9D0)
#define FH_MEM_CBBC_0_15_UPPER_BOUND (FH_MEM_LOWER_BOUND + 0 xA10)
#define FH_MEM_CBBC_16_19_LOWER_BOUND (FH_MEM_LOWER_BOUND + 0 xBF0)
#define FH_MEM_CBBC_16_19_UPPER_BOUND (FH_MEM_LOWER_BOUND + 0 xC00)
#define FH_MEM_CBBC_20_31_LOWER_BOUND (FH_MEM_LOWER_BOUND + 0 xB20)
#define FH_MEM_CBBC_20_31_UPPER_BOUND (FH_MEM_LOWER_BOUND + 0 xB80)
/* 22000 TFD table address, 64 bit */
#define TFH_TFDQ_CBB_TABLE (0 x1C00)
/* Find TFD CB base pointer for given queue */
static inline unsigned int FH_MEM_CBBC_QUEUE(struct iwl_trans *trans,
unsigned int chnl)
{
if (trans->mac_cfg->gen2) {
WARN_ON_ONCE(chnl >= 64 );
return TFH_TFDQ_CBB_TABLE + 8 * chnl;
}
if (chnl < 16 )
return FH_MEM_CBBC_0_15_LOWER_BOUND + 4 * chnl;
if (chnl < 20 )
return FH_MEM_CBBC_16_19_LOWER_BOUND + 4 * (chnl - 16 );
WARN_ON_ONCE(chnl >= 32 );
return FH_MEM_CBBC_20_31_LOWER_BOUND + 4 * (chnl - 20 );
}
/* 22000 configuration registers */
/*
* TFH Configuration register .
*
* BIT fields :
*
* Bits 3 : 0 :
* Define the maximum number of pending read requests .
* Maximum configuration value allowed is 0 xC
* Bits 9 : 8 :
* Define the maximum transfer size . ( 64 / 128 / 256 )
* Bit 10 :
* When bit is set and transfer size is set to 128 B , the TFH will enable
* reading chunks of more than 64 B only if the read address is aligned to 128 B .
* In case of DRAM read address which is not aligned to 128 B , the TFH will
* enable transfer size which doesn ' t cross 64 B DRAM address boundary .
*/
#define TFH_TRANSFER_MODE (0 x1F40)
#define TFH_TRANSFER_MAX_PENDING_REQ 0 xc
#define TFH_CHUNK_SIZE_128 BIT(8 )
#define TFH_CHUNK_SPLIT_MODE BIT(10 )
/*
* Defines the offset address in dwords referring from the beginning of the
* Tx CMD which will be updated in DRAM .
* Note that the TFH offset address for Tx CMD update is always referring to
* the start of the TFD first TB .
* In case of a DRAM Tx CMD update the TFH will update PN and Key ID
*/
#define TFH_TXCMD_UPDATE_CFG (0 x1F48)
/*
* Controls TX DMA operation
*
* BIT fields :
*
* Bits 31 : 30 : Enable the SRAM DMA channel .
* Turning on bit 31 will kick the SRAM2DRAM DMA .
* Note that the sram2dram may be enabled only after configuring the DRAM and
* SRAM addresses registers and the byte count register .
* Bits 25 : 24 : Defines the interrupt target upon dram2sram transfer done . When
* set to 1 - interrupt is sent to the driver
* Bit 0 : Indicates the snoop configuration
*/
#define TFH_SRV_DMA_CHNL0_CTRL (0 x1F60)
#define TFH_SRV_DMA_SNOOP BIT(0 )
#define TFH_SRV_DMA_TO_DRIVER BIT(24 )
#define TFH_SRV_DMA_START BIT(31 )
/* Defines the DMA SRAM write start address to transfer a data block */
#define TFH_SRV_DMA_CHNL0_SRAM_ADDR (0 x1F64)
/* Defines the 64bits DRAM start address to read the DMA data block from */
#define TFH_SRV_DMA_CHNL0_DRAM_ADDR (0 x1F68)
/*
* Defines the number of bytes to transfer from DRAM to SRAM .
* Note that this register may be configured with non - dword aligned size .
*/
#define TFH_SRV_DMA_CHNL0_BC (0 x1F70)
/*
* Rx SRAM Control and Status Registers ( RSCSR )
*
* These registers provide handshake between driver and device for the Rx queue
* ( this queue handles * all * command responses , notifications , Rx data , etc .
* sent from uCode to host driver ) . Unlike Tx , there is only one Rx
* queue , and only one Rx DMA / FIFO channel . Also unlike Tx , which can
* concatenate up to 20 DRAM buffers to form a Tx frame , each Receive Buffer
* Descriptor ( RBD ) points to only one Rx Buffer ( RB ) ; there is a 1 : 1
* mapping between RBDs and RBs .
*
* Driver must allocate host DRAM memory for the following , and set the
* physical address of each into device registers :
*
* 1 ) Receive Buffer Descriptor ( RBD ) circular buffer ( CB ) , typically with 256
* entries ( although any power of 2 , up to 4096 , is selectable by driver ) .
* Each entry ( 1 dword ) points to a receive buffer ( RB ) of consistent size
* ( typically 4 K , although 8 K or 16 K are also selectable by driver ) .
* Driver sets up RB size and number of RBDs in the CB via Rx config
* register FH_MEM_RCSR_CHNL0_CONFIG_REG .
*
* Bit fields within one RBD :
* 27 - 0 : Receive Buffer physical address bits [ 35 : 8 ] , 256 - byte aligned
*
* Driver sets physical address [ 35 : 8 ] of base of RBD circular buffer
* into FH_RSCSR_CHNL0_RBDCB_BASE_REG [ 27 : 0 ] .
*
* 2 ) Rx status buffer , 8 bytes , in which uCode indicates which Rx Buffers
* ( RBs ) have been filled , via a " write pointer " , actually the index of
* the RB ' s corresponding RBD within the circular buffer . Driver sets
* physical address [ 35 : 4 ] into FH_RSCSR_CHNL0_STTS_WPTR_REG [ 31 : 0 ] .
*
* Bit fields in lower dword of Rx status buffer ( upper dword not used
* by driver :
* 31 - 12 : Not used by driver
* 11 - 0 : Index of last filled Rx buffer descriptor
* ( device writes , driver reads this value )
*
* As the driver prepares Receive Buffers ( RBs ) for device to fill , driver must
* enter pointers to these RBs into contiguous RBD circular buffer entries ,
* and update the device ' s " write " index register ,
* FH_RSCSR_CHNL0_RBDCB_WPTR_REG .
*
* This " write " index corresponds to the * next * RBD that the driver will make
* available , i . e . one RBD past the tail of the ready - to - fill RBDs within
* the circular buffer . This value should initially be 0 ( before preparing any
* RBs ) , should be 8 after preparing the first 8 RBs ( for example ) , and must
* wrap back to 0 at the end of the circular buffer ( but don ' t wrap before
* " read " index has advanced past 1 ! See below ) .
* NOTE : DEVICE EXPECTS THE WRITE INDEX TO BE INCREMENTED IN MULTIPLES OF 8 .
*
* As the device fills RBs ( referenced from contiguous RBDs within the circular
* buffer ) , it updates the Rx status buffer in host DRAM , 2 ) described above ,
* to tell the driver the index of the latest filled RBD . The driver must
* read this " read " index from DRAM after receiving an Rx interrupt from device
*
* The driver must also internally keep track of a third index , which is the
* next RBD to process . When receiving an Rx interrupt , driver should process
* all filled but unprocessed RBs up to , but not including , the RB
* corresponding to the " read " index . For example , if " read " index becomes " 1 " ,
* driver may process the RB pointed to by RBD 0 . Depending on volume of
* traffic , there may be many RBs to process .
*
* If read index = = write index , device thinks there is no room to put new data .
* Due to this , the maximum number of filled RBs is 255 , instead of 256 . To
* be safe , make sure that there is a gap of at least 2 RBDs between " write "
* and " read " indexes ; that is , make sure that there are no more than 254
* buffers waiting to be filled .
*/
#define FH_MEM_RSCSR_LOWER_BOUND (FH_MEM_LOWER_BOUND + 0 xBC0)
#define FH_MEM_RSCSR_UPPER_BOUND (FH_MEM_LOWER_BOUND + 0 xC00)
#define FH_MEM_RSCSR_CHNL0 (FH_MEM_RSCSR_LOWER_BOUND)
/*
* Physical base address of 8 - byte Rx Status buffer .
* Bit fields :
* 31 - 0 : Rx status buffer physical base address [ 35 : 4 ] , must 16 - byte aligned .
*/
#define FH_RSCSR_CHNL0_STTS_WPTR_REG (FH_MEM_RSCSR_CHNL0)
/*
* Physical base address of Rx Buffer Descriptor Circular Buffer .
* Bit fields :
* 27 - 0 : RBD CD physical base address [ 35 : 8 ] , must be 256 - byte aligned .
*/
#define FH_RSCSR_CHNL0_RBDCB_BASE_REG (FH_MEM_RSCSR_CHNL0 + 0 x004)
/*
* Rx write pointer ( index , really ! ) .
* Bit fields :
* 11 - 0 : Index of driver ' s most recent prepared - to - be - filled RBD , + 1 .
* NOTE : For 256 - entry circular buffer , use only bits [ 7 : 0 ] .
*/
#define FH_RSCSR_CHNL0_RBDCB_WPTR_REG (FH_MEM_RSCSR_CHNL0 + 0 x008)
#define FH_RSCSR_CHNL0_WPTR (FH_RSCSR_CHNL0_RBDCB_WPTR_REG)
#define FW_RSCSR_CHNL0_RXDCB_RDPTR_REG (FH_MEM_RSCSR_CHNL0 + 0 x00c)
#define FH_RSCSR_CHNL0_RDPTR FW_RSCSR_CHNL0_RXDCB_RDPTR_REG
/*
* Rx Config / Status Registers ( RCSR )
* Rx Config Reg for channel 0 ( only channel used )
*
* Driver must initialize FH_MEM_RCSR_CHNL0_CONFIG_REG as follows for
* normal operation ( see bit fields ) .
*
* Clearing FH_MEM_RCSR_CHNL0_CONFIG_REG to 0 turns off Rx DMA .
* Driver should poll FH_MEM_RSSR_RX_STATUS_REG for
* FH_RSSR_CHNL0_RX_STATUS_CHNL_IDLE ( bit 24 ) before continuing .
*
* Bit fields :
* 31 - 30 : Rx DMA channel enable : ' 00 ' off / pause , ' 01 ' pause at end of frame ,
* ' 10 ' operate normally
* 29 - 24 : reserved
* 23 - 20 : # RBDs in circular buffer = 2 ^ value ; use " 8 " for 256 RBDs ( normal ) ,
* min " 5 " for 32 RBDs , max " 12 " for 4096 RBDs .
* 19 - 18 : reserved
* 17 - 16 : size of each receive buffer ; ' 00 ' 4 K ( normal ) , ' 01 ' 8 K ,
* ' 10 ' 12 K , ' 11 ' 16 K .
* 15 - 14 : reserved
* 13 - 12 : IRQ destination ; ' 00 ' none , ' 01 ' host driver ( normal operation )
* 11 - 4 : timeout for closing Rx buffer and interrupting host ( units 32 usec )
* typical value 0 x10 ( about 1 / 2 msec )
* 3 - 0 : reserved
*/
#define FH_MEM_RCSR_LOWER_BOUND (FH_MEM_LOWER_BOUND + 0 xC00)
#define FH_MEM_RCSR_UPPER_BOUND (FH_MEM_LOWER_BOUND + 0 xCC0)
#define FH_MEM_RCSR_CHNL0 (FH_MEM_RCSR_LOWER_BOUND)
#define FH_MEM_RCSR_CHNL0_CONFIG_REG (FH_MEM_RCSR_CHNL0)
#define FH_MEM_RCSR_CHNL0_RBDCB_WPTR (FH_MEM_RCSR_CHNL0 + 0 x8)
#define FH_MEM_RCSR_CHNL0_FLUSH_RB_REQ (FH_MEM_RCSR_CHNL0 + 0 x10)
#define FH_RCSR_CHNL0_RX_CONFIG_RB_TIMEOUT_MSK (0 x00000FF0) /* bits 4-11 */
#define FH_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_MSK (0 x00001000) /* bits 12 */
#define FH_RCSR_CHNL0_RX_CONFIG_SINGLE_FRAME_MSK (0 x00008000) /* bit 15 */
#define FH_RCSR_CHNL0_RX_CONFIG_RB_SIZE_MSK (0 x00030000) /* bits 16-17 */
#define FH_RCSR_CHNL0_RX_CONFIG_RBDBC_SIZE_MSK (0 x00F00000) /* bits 20-23 */
#define FH_RCSR_CHNL0_RX_CONFIG_DMA_CHNL_EN_MSK (0 xC0000000) /* bits 30-31*/
#define FH_RCSR_RX_CONFIG_RBDCB_SIZE_POS (20 )
#define FH_RCSR_RX_CONFIG_REG_IRQ_RBTH_POS (4 )
#define RX_RB_TIMEOUT (0 x11)
#define FH_RCSR_RX_CONFIG_CHNL_EN_PAUSE_VAL (0 x00000000)
#define FH_RCSR_RX_CONFIG_CHNL_EN_PAUSE_EOF_VAL (0 x40000000)
#define FH_RCSR_RX_CONFIG_CHNL_EN_ENABLE_VAL (0 x80000000)
#define FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_4K (0 x00000000)
#define FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_8K (0 x00010000)
#define FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_12K (0 x00020000)
#define FH_RCSR_RX_CONFIG_REG_VAL_RB_SIZE_16K (0 x00030000)
#define FH_RCSR_CHNL0_RX_IGNORE_RXF_EMPTY (0 x00000004)
#define FH_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_NO_INT_VAL (0 x00000000)
#define FH_RCSR_CHNL0_RX_CONFIG_IRQ_DEST_INT_HOST_VAL (0 x00001000)
/*
* Rx Shared Status Registers ( RSSR )
*
* After stopping Rx DMA channel ( writing 0 to
* FH_MEM_RCSR_CHNL0_CONFIG_REG ) , driver must poll
* FH_MEM_RSSR_RX_STATUS_REG until Rx channel is idle .
*
* Bit fields :
* 24 : 1 = Channel 0 is idle
*
* FH_MEM_RSSR_SHARED_CTRL_REG and FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV
* contain default values that should not be altered by the driver .
*/
#define FH_MEM_RSSR_LOWER_BOUND (FH_MEM_LOWER_BOUND + 0 xC40)
#define FH_MEM_RSSR_UPPER_BOUND (FH_MEM_LOWER_BOUND + 0 xD00)
#define FH_MEM_RSSR_SHARED_CTRL_REG (FH_MEM_RSSR_LOWER_BOUND)
#define FH_MEM_RSSR_RX_STATUS_REG (FH_MEM_RSSR_LOWER_BOUND + 0 x004)
#define FH_MEM_RSSR_RX_ENABLE_ERR_IRQ2DRV\
(FH_MEM_RSSR_LOWER_BOUND + 0 x008)
#define FH_RSSR_CHNL0_RX_STATUS_CHNL_IDLE (0 x01000000)
#define FH_MEM_TFDIB_REG1_ADDR_BITSHIFT 28
#define FH_MEM_TB_MAX_LENGTH (0 x00020000)
/* 9000 rx series registers */
#define RFH_Q0_FRBDCB_BA_LSB 0 xA08000 /* 64 bit address */
#define RFH_Q_FRBDCB_BA_LSB(q) (RFH_Q0_FRBDCB_BA_LSB + (q) * 8 )
/* Write index table */
#define RFH_Q0_FRBDCB_WIDX 0 xA08080
#define RFH_Q_FRBDCB_WIDX(q) (RFH_Q0_FRBDCB_WIDX + (q) * 4 )
/* Write index table - shadow registers */
#define RFH_Q0_FRBDCB_WIDX_TRG 0 x1C80
#define RFH_Q_FRBDCB_WIDX_TRG(q) (RFH_Q0_FRBDCB_WIDX_TRG + (q) * 4 )
/* Read index table */
#define RFH_Q0_FRBDCB_RIDX 0 xA080C0
#define RFH_Q_FRBDCB_RIDX(q) (RFH_Q0_FRBDCB_RIDX + (q) * 4 )
/* Used list table */
#define RFH_Q0_URBDCB_BA_LSB 0 xA08100 /* 64 bit address */
#define RFH_Q_URBDCB_BA_LSB(q) (RFH_Q0_URBDCB_BA_LSB + (q) * 8 )
/* Write index table */
#define RFH_Q0_URBDCB_WIDX 0 xA08180
#define RFH_Q_URBDCB_WIDX(q) (RFH_Q0_URBDCB_WIDX + (q) * 4 )
#define RFH_Q0_URBDCB_VAID 0 xA081C0
#define RFH_Q_URBDCB_VAID(q) (RFH_Q0_URBDCB_VAID + (q) * 4 )
/* stts */
#define RFH_Q0_URBD_STTS_WPTR_LSB 0 xA08200 /*64 bits address */
#define RFH_Q_URBD_STTS_WPTR_LSB(q) (RFH_Q0_URBD_STTS_WPTR_LSB + (q) * 8 )
#define RFH_Q0_ORB_WPTR_LSB 0 xA08280
#define RFH_Q_ORB_WPTR_LSB(q) (RFH_Q0_ORB_WPTR_LSB + (q) * 8 )
#define RFH_RBDBUF_RBD0_LSB 0 xA08300
#define RFH_RBDBUF_RBD_LSB(q) (RFH_RBDBUF_RBD0_LSB + (q) * 8 )
/*
* RFH Status Register
*
* Bit fields :
*
* Bit 29 : RBD_FETCH_IDLE
* This status flag is set by the RFH when there is no active RBD fetch from
* DRAM .
* Once the RFH RBD controller starts fetching ( or when there is a pending
* RBD read response from DRAM ) , this flag is immediately turned off .
*
* Bit 30 : SRAM_DMA_IDLE
* This status flag is set by the RFH when there is no active transaction from
* SRAM to DRAM .
* Once the SRAM to DRAM DMA is active , this flag is immediately turned off .
*
* Bit 31 : RXF_DMA_IDLE
* This status flag is set by the RFH when there is no active transaction from
* RXF to DRAM .
* Once the RXF - to - DRAM DMA is active , this flag is immediately turned off .
*/
#define RFH_GEN_STATUS 0 xA09808
#define RFH_GEN_STATUS_AX210 0 xA07824
#define RBD_FETCH_IDLE BIT(29 )
#define SRAM_DMA_IDLE BIT(30 )
#define RXF_DMA_IDLE BIT(31 )
/* DMA configuration */
#define RFH_RXF_DMA_CFG 0 xA09820
#define RFH_RXF_DMA_CFG_AX210 0 xA07880
/* RB size */
#define RFH_RXF_DMA_RB_SIZE_MASK (0 x000F0000) /* bits 16-19 */
#define RFH_RXF_DMA_RB_SIZE_POS 16
#define RFH_RXF_DMA_RB_SIZE_1K (0 x1 << RFH_RXF_DMA_RB_SIZE_POS)
#define RFH_RXF_DMA_RB_SIZE_2K (0 x2 << RFH_RXF_DMA_RB_SIZE_POS)
#define RFH_RXF_DMA_RB_SIZE_4K (0 x4 << RFH_RXF_DMA_RB_SIZE_POS)
#define RFH_RXF_DMA_RB_SIZE_8K (0 x8 << RFH_RXF_DMA_RB_SIZE_POS)
#define RFH_RXF_DMA_RB_SIZE_12K (0 x9 << RFH_RXF_DMA_RB_SIZE_POS)
#define RFH_RXF_DMA_RB_SIZE_16K (0 xA << RFH_RXF_DMA_RB_SIZE_POS)
#define RFH_RXF_DMA_RB_SIZE_20K (0 xB << RFH_RXF_DMA_RB_SIZE_POS)
#define RFH_RXF_DMA_RB_SIZE_24K (0 xC << RFH_RXF_DMA_RB_SIZE_POS)
#define RFH_RXF_DMA_RB_SIZE_28K (0 xD << RFH_RXF_DMA_RB_SIZE_POS)
#define RFH_RXF_DMA_RB_SIZE_32K (0 xE << RFH_RXF_DMA_RB_SIZE_POS)
/* RB Circular Buffer size:defines the table sizes in RBD units */
#define RFH_RXF_DMA_RBDCB_SIZE_MASK (0 x00F00000) /* bits 20-23 */
#define RFH_RXF_DMA_RBDCB_SIZE_POS 20
#define RFH_RXF_DMA_RBDCB_SIZE_8 (0 x3 << RFH_RXF_DMA_RBDCB_SIZE_POS)
#define RFH_RXF_DMA_RBDCB_SIZE_16 (0 x4 << RFH_RXF_DMA_RBDCB_SIZE_POS)
#define RFH_RXF_DMA_RBDCB_SIZE_32 (0 x5 << RFH_RXF_DMA_RBDCB_SIZE_POS)
#define RFH_RXF_DMA_RBDCB_SIZE_64 (0 x7 << RFH_RXF_DMA_RBDCB_SIZE_POS)
#define RFH_RXF_DMA_RBDCB_SIZE_128 (0 x7 << RFH_RXF_DMA_RBDCB_SIZE_POS)
#define RFH_RXF_DMA_RBDCB_SIZE_256 (0 x8 << RFH_RXF_DMA_RBDCB_SIZE_POS)
#define RFH_RXF_DMA_RBDCB_SIZE_512 (0 x9 << RFH_RXF_DMA_RBDCB_SIZE_POS)
#define RFH_RXF_DMA_RBDCB_SIZE_1024 (0 xA << RFH_RXF_DMA_RBDCB_SIZE_POS)
#define RFH_RXF_DMA_RBDCB_SIZE_2048 (0 xB << RFH_RXF_DMA_RBDCB_SIZE_POS)
#define RFH_RXF_DMA_MIN_RB_SIZE_MASK (0 x03000000) /* bit 24-25 */
#define RFH_RXF_DMA_MIN_RB_SIZE_POS 24
#define RFH_RXF_DMA_MIN_RB_4_8 (3 << RFH_RXF_DMA_MIN_RB_SIZE_POS)
#define RFH_RXF_DMA_DROP_TOO_LARGE_MASK (0 x04000000) /* bit 26 */
#define RFH_RXF_DMA_SINGLE_FRAME_MASK (0 x20000000) /* bit 29 */
#define RFH_DMA_EN_MASK (0 xC0000000) /* bits 30-31*/
#define RFH_DMA_EN_ENABLE_VAL BIT(31 )
#define RFH_RXF_RXQ_ACTIVE 0 xA0980C
#define RFH_GEN_CFG 0 xA09800
#define RFH_GEN_CFG_SERVICE_DMA_SNOOP BIT(0 )
#define RFH_GEN_CFG_RFH_DMA_SNOOP BIT(1 )
#define RFH_GEN_CFG_RB_CHUNK_SIZE BIT(4 )
#define RFH_GEN_CFG_RB_CHUNK_SIZE_128 1
#define RFH_GEN_CFG_RB_CHUNK_SIZE_64 0
/* the driver assumes everywhere that the default RXQ is 0 */
#define RFH_GEN_CFG_DEFAULT_RXQ_NUM 0 xF00
#define RFH_GEN_CFG_VAL(_n, _v) FIELD_PREP(RFH_GEN_CFG_ ## _n, _v)
/* end of 9000 rx series registers */
/* TFDB Area - TFDs buffer table */
#define FH_MEM_TFDIB_DRAM_ADDR_LSB_MSK (0 xFFFFFFFF)
#define FH_TFDIB_LOWER_BOUND (FH_MEM_LOWER_BOUND + 0 x900)
#define FH_TFDIB_UPPER_BOUND (FH_MEM_LOWER_BOUND + 0 x958)
#define FH_TFDIB_CTRL0_REG(_chnl) (FH_TFDIB_LOWER_BOUND + 0 x8 * (_chnl))
#define FH_TFDIB_CTRL1_REG(_chnl) (FH_TFDIB_LOWER_BOUND + 0 x8 * (_chnl) + 0 x4)
/*
* Transmit DMA Channel Control / Status Registers ( TCSR )
*
* Device has one configuration register for each of 8 Tx DMA / FIFO channels
* supported in hardware ( don ' t confuse these with the 16 Tx queues in DRAM ,
* which feed the DMA / FIFO channels ) ; config regs are separated by 0 x20 bytes .
*
* To use a Tx DMA channel , driver must initialize its
* FH_TCSR_CHNL_TX_CONFIG_REG ( chnl ) with :
*
* FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE |
* FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE_VAL
*
* All other bits should be 0 .
*
* Bit fields :
* 31 - 30 : Tx DMA channel enable : ' 00 ' off / pause , ' 01 ' pause at end of frame ,
* ' 10 ' operate normally
* 29 - 4 : Reserved , set to " 0 "
* 3 : Enable internal DMA requests ( 1 , normal operation ) , disable ( 0 )
* 2 - 0 : Reserved , set to " 0 "
*/
#define FH_TCSR_LOWER_BOUND (FH_MEM_LOWER_BOUND + 0 xD00)
#define FH_TCSR_UPPER_BOUND (FH_MEM_LOWER_BOUND + 0 xE60)
/* Find Control/Status reg for given Tx DMA/FIFO channel */
#define FH_TCSR_CHNL_NUM (8 )
/* TCSR: tx_config register values */
#define FH_TCSR_CHNL_TX_CONFIG_REG(_chnl) \
(FH_TCSR_LOWER_BOUND + 0 x20 * (_chnl))
#define FH_TCSR_CHNL_TX_CREDIT_REG(_chnl) \
(FH_TCSR_LOWER_BOUND + 0 x20 * (_chnl) + 0 x4)
#define FH_TCSR_CHNL_TX_BUF_STS_REG(_chnl) \
(FH_TCSR_LOWER_BOUND + 0 x20 * (_chnl) + 0 x8)
#define FH_TCSR_TX_CONFIG_REG_VAL_MSG_MODE_TXF (0 x00000000)
#define FH_TCSR_TX_CONFIG_REG_VAL_MSG_MODE_DRV (0 x00000001)
#define FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_DISABLE (0 x00000000)
#define FH_TCSR_TX_CONFIG_REG_VAL_DMA_CREDIT_ENABLE (0 x00000008)
#define FH_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_NOINT (0 x00000000)
#define FH_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_ENDTFD (0 x00100000)
#define FH_TCSR_TX_CONFIG_REG_VAL_CIRQ_HOST_IFTFD (0 x00200000)
#define FH_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_NOINT (0 x00000000)
#define FH_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_ENDTFD (0 x00400000)
#define FH_TCSR_TX_CONFIG_REG_VAL_CIRQ_RTC_IFTFD (0 x00800000)
#define FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_PAUSE (0 x00000000)
#define FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_PAUSE_EOF (0 x40000000)
#define FH_TCSR_TX_CONFIG_REG_VAL_DMA_CHNL_ENABLE (0 x80000000)
#define FH_TCSR_CHNL_TX_BUF_STS_REG_VAL_TFDB_EMPTY (0 x00000000)
#define FH_TCSR_CHNL_TX_BUF_STS_REG_VAL_TFDB_WAIT (0 x00002000)
#define FH_TCSR_CHNL_TX_BUF_STS_REG_VAL_TFDB_VALID (0 x00000003)
#define FH_TCSR_CHNL_TX_BUF_STS_REG_POS_TB_NUM (20 )
#define FH_TCSR_CHNL_TX_BUF_STS_REG_POS_TB_IDX (12 )
/*
* Tx Shared Status Registers ( TSSR )
*
* After stopping Tx DMA channel ( writing 0 to
* FH_TCSR_CHNL_TX_CONFIG_REG ( chnl ) ) , driver must poll
* FH_TSSR_TX_STATUS_REG until selected Tx channel is idle
* ( channel ' s buffers empty | no pending requests ) .
*
* Bit fields :
* 31 - 24 : 1 = Channel buffers empty ( channel 7 : 0 )
* 23 - 16 : 1 = No pending requests ( channel 7 : 0 )
*/
#define FH_TSSR_LOWER_BOUND (FH_MEM_LOWER_BOUND + 0 xEA0)
#define FH_TSSR_UPPER_BOUND (FH_MEM_LOWER_BOUND + 0 xEC0)
#define FH_TSSR_TX_STATUS_REG (FH_TSSR_LOWER_BOUND + 0 x010)
/*
* Bit fields for TSSR ( Tx Shared Status & Control ) error status register :
* 31 : Indicates an address error when accessed to internal memory
* uCode / driver must write " 1 " in order to clear this flag
* 30 : Indicates that Host did not send the expected number of dwords to FH
* uCode / driver must write " 1 " in order to clear this flag
* 16 - 9 : Each status bit is for one channel . Indicates that an ( Error ) ActDMA
* command was received from the scheduler while the TRB was already full
* with previous command
* uCode / driver must write " 1 " in order to clear this flag
* 7 - 0 : Each status bit indicates a channel ' s TxCredit error . When an error
* bit is set , it indicates that the FH has received a full indication
* from the RTC TxFIFO and the current value of the TxCredit counter was
* not equal to zero . This mean that the credit mechanism was not
* synchronized to the TxFIFO status
* uCode / driver must write " 1 " in order to clear this flag
*/
#define FH_TSSR_TX_ERROR_REG (FH_TSSR_LOWER_BOUND + 0 x018)
#define FH_TSSR_TX_MSG_CONFIG_REG (FH_TSSR_LOWER_BOUND + 0 x008)
#define FH_TSSR_TX_STATUS_REG_MSK_CHNL_IDLE(_chnl) ((1 << (_chnl)) << 16 )
/* Tx service channels */
#define FH_SRVC_CHNL (9 )
#define FH_SRVC_LOWER_BOUND (FH_MEM_LOWER_BOUND + 0 x9C8)
#define FH_SRVC_UPPER_BOUND (FH_MEM_LOWER_BOUND + 0 x9D0)
#define FH_SRVC_CHNL_SRAM_ADDR_REG(_chnl) \
(FH_SRVC_LOWER_BOUND + ((_chnl) - 9 ) * 0 x4)
#define FH_TX_CHICKEN_BITS_REG (FH_MEM_LOWER_BOUND + 0 xE98)
#define FH_TX_TRB_REG(_chan) (FH_MEM_LOWER_BOUND + 0 x958 + (_chan) * 4 )
/* Instruct FH to increment the retry count of a packet when
* it is brought from the memory to TX - FIFO
*/
#define FH_TX_CHICKEN_BITS_SCD_AUTO_RETRY_EN (0 x00000002)
#define RX_POOL_SIZE(rbds) ((rbds) - 1 + \
IWL_MAX_RX_HW_QUEUES * \
(RX_CLAIM_REQ_ALLOC - RX_POST_REQ_ALLOC))
/* cb size is the exponent */
#define RX_QUEUE_CB_SIZE(x) ilog2(x)
#define RX_QUEUE_SIZE 256
#define RX_QUEUE_MASK 255
#define RX_QUEUE_SIZE_LOG 8
#define IWL_DEFAULT_RX_QUEUE 0
/**
* struct iwl_rb_status - reserve buffer status
* host memory mapped FH registers
* @ closed_rb_num : [ 0 : 11 ] Indicates the index of the RB which was closed
* @ closed_fr_num : [ 0 : 11 ] Indicates the index of the RX Frame which was closed
* @ finished_rb_num : [ 0 : 11 ] Indicates the index of the current RB
* in which the last frame was written to
* @ finished_fr_num : [ 0 : 11 ] Indicates the index of the RX Frame
* which was transferred
* @ _ _ spare : reserved
*/
struct iwl_rb_status {
__le16 closed_rb_num;
__le16 closed_fr_num;
__le16 finished_rb_num;
__le16 finished_fr_num;
__le32 __spare;
} __packed;
#define TFD_QUEUE_SIZE_MAX (256 )
/* cb size is the exponent - 3 */
#define TFD_QUEUE_CB_SIZE(x) (ilog2(x) - 3 )
#define TFD_QUEUE_SIZE_BC_DUP (64 )
#define TFD_QUEUE_BC_SIZE (TFD_QUEUE_SIZE_MAX + TFD_QUEUE_SIZE_BC_DUP)
#define TFD_QUEUE_BC_SIZE_AX210 1024
#define TFD_QUEUE_BC_SIZE_BZ (1024 * 4 )
#define IWL_TX_DMA_MASK DMA_BIT_MASK(36 )
#define IWL_NUM_OF_TBS 20
#define IWL_TFH_NUM_TBS 25
/* IMR DMA registers */
#define IMR_TFH_SRV_DMA_CHNL0_CTRL 0 x00a0a51c
#define IMR_TFH_SRV_DMA_CHNL0_SRAM_ADDR 0 x00a0a520
#define IMR_TFH_SRV_DMA_CHNL0_DRAM_ADDR_LSB 0 x00a0a524
#define IMR_TFH_SRV_DMA_CHNL0_DRAM_ADDR_MSB 0 x00a0a528
#define IMR_TFH_SRV_DMA_CHNL0_BC 0 x00a0a52c
#define TFH_SRV_DMA_CHNL0_LEFT_BC 0 x00a0a530
/* RFH S2D DMA registers */
#define IMR_RFH_GEN_CFG_SERVICE_DMA_RS_MSK 0 x0000000c
#define IMR_RFH_GEN_CFG_SERVICE_DMA_SNOOP_MSK 0 x00000002
/* TFH D2S DMA registers */
#define IMR_UREG_CHICK_HALT_UMAC_PERMANENTLY_MSK 0 x80000000
#define IMR_UREG_CHICK 0 x00d05c00
#define IMR_TFH_SRV_DMA_CHNL0_CTRL_D2S_IRQ_TARGET_POS 0 x00800000
#define IMR_TFH_SRV_DMA_CHNL0_CTRL_D2S_RS_MSK 0 x00000030
#define IMR_TFH_SRV_DMA_CHNL0_CTRL_D2S_DMA_EN_POS 0 x80000000
static inline u8 iwl_get_dma_hi_addr(dma_addr_t addr)
{
return (sizeof (addr) > sizeof (u32) ? upper_32_bits(addr) : 0 ) & 0 xF;
}
/**
* enum iwl_tfd_tb_hi_n_len - TB hi_n_len bits
* @ TB_HI_N_LEN_ADDR_HI_MSK : high 4 bits ( to make it 36 ) of DMA address
* @ TB_HI_N_LEN_LEN_MSK : length of the TB
*/
enum iwl_tfd_tb_hi_n_len {
TB_HI_N_LEN_ADDR_HI_MSK = 0 xf,
TB_HI_N_LEN_LEN_MSK = 0 xfff0,
};
/**
* struct iwl_tfd_tb - transmit buffer descriptor within transmit frame descriptor
*
* This structure contains dma address and length of transmission address
*
* @ lo : low [ 31 : 0 ] portion of the dma address of TX buffer
* every even is unaligned on 16 bit boundary
* @ hi_n_len : & enum iwl_tfd_tb_hi_n_len
*/
struct iwl_tfd_tb {
__le32 lo;
__le16 hi_n_len;
} __packed;
/**
* struct iwl_tfh_tb - transmit buffer descriptor within transmit frame descriptor
*
* This structure contains dma address and length of transmission address
*
* @ tb_len : length of the tx buffer
* @ addr : 64 bits dma address
*/
struct iwl_tfh_tb {
__le16 tb_len;
__le64 addr;
} __packed;
/*
* Each Tx queue uses a circular buffer of 256 TFDs stored in host DRAM .
* Both driver and device share these circular buffers , each of which must be
* contiguous 256 TFDs .
* For pre 22000 HW it is 256 x 128 bytes - per - TFD = 32 KBytes
* For 22000 HW and on it is 256 x 256 bytes - per - TFD = 65 KBytes
*
* Driver must indicate the physical address of the base of each
* circular buffer via the FH_MEM_CBBC_QUEUE registers .
*
* Each TFD contains pointer / size information for up to 20 / 25 data buffers
* in host DRAM . These buffers collectively contain the ( one ) frame described
* by the TFD . Each buffer must be a single contiguous block of memory within
* itself , but buffers may be scattered in host DRAM . Each buffer has max size
* of ( 4 K - 4 ) . The concatenates all of a TFD ' s buffers into a single
* Tx frame , up to 8 KBytes in size .
*
* A maximum of 255 ( not 256 ! ) TFDs may be on a queue waiting for Tx .
*/
/**
* struct iwl_tfd - Transmit Frame Descriptor ( TFD )
* @ _ _ reserved1 : reserved
* @ num_tbs :
* 0 - 4 number of active tbs
* 5 reserved
* 6 - 7 padding ( not used )
* @ tbs : transmit frame buffer descriptors
* @ _ _ pad : padding
*/
struct iwl_tfd {
u8 __reserved1[3 ];
u8 num_tbs;
struct iwl_tfd_tb tbs[IWL_NUM_OF_TBS];
__le32 __pad;
} __packed;
/**
* struct iwl_tfh_tfd - Transmit Frame Descriptor ( TFD )
* @ num_tbs :
* 0 - 4 number of active tbs
* 5 - 15 reserved
* @ tbs : transmit frame buffer descriptors
* @ _ _ pad : padding
*/
struct iwl_tfh_tfd {
__le16 num_tbs;
struct iwl_tfh_tb tbs[IWL_TFH_NUM_TBS];
__le32 __pad;
} __packed;
/* Keep Warm Size */
#define IWL_KW_SIZE 0 x1000 /* 4k */
/* Fixed (non-configurable) rx data from phy */
/**
* struct iwl_bc_tbl_entry - scheduler byte count table entry
* base physical address provided by SCD_DRAM_BASE_ADDR
* For devices up to 22000 :
* @ tfd_offset :
* For devices up to 22000 :
* 0 - 12 - tx command byte count
* 12 - 16 - station index
* For 22000 and on :
* 0 - 12 - tx command byte count
* 12 - 13 - number of 64 byte chunks
* 14 - 16 - reserved
*/
struct iwl_bc_tbl_entry {
__le16 tfd_offset;
} __packed;
#endif /* !__iwl_fh_h__ */
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*© Formatika GbR, Deutschland
2026-10-11
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