can_mcan.h

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/*
 * Copyright (c) 2023 Vestas Wind Systems A/S
 * Copyright (c) 2020 Alexander Wachter
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 */
 
#ifndef ZEPHYR_INCLUDE_DRIVERS_CAN_CAN_MCAN_H_
#define ZEPHYR_INCLUDE_DRIVERS_CAN_CAN_MCAN_H_
 
#include <zephyr/cache.h>
#include <zephyr/devicetree.h>
#include <zephyr/drivers/can.h>
#include <zephyr/kernel.h>
#include <zephyr/sys/sys_io.h>
#include <zephyr/sys/util.h>
 
/*
 * The Bosch M_CAN register definitions correspond to those found in the Bosch M_CAN Controller Area
 * Network User's Manual, Revision 3.3.0.
 */
 
/* Core Release register */
#define CAN_MCAN_CREL         0x000
#define CAN_MCAN_CREL_REL     GENMASK(31, 28)
#define CAN_MCAN_CREL_STEP    GENMASK(27, 24)
#define CAN_MCAN_CREL_SUBSTEP GENMASK(23, 20)
#define CAN_MCAN_CREL_YEAR    GENMASK(19, 16)
#define CAN_MCAN_CREL_MON     GENMASK(15, 8)
#define CAN_MCAN_CREL_DAY     GENMASK(7, 0)
 
/* Endian register */
#define CAN_MCAN_ENDN     0x004
#define CAN_MCAN_ENDN_ETV GENMASK(31, 0)
 
/* Customer register */
#define CAN_MCAN_CUST      0x008
#define CAN_MCAN_CUST_CUST GENMASK(31, 0)
 
/* Data Bit Timing & Prescaler register */
#define CAN_MCAN_DBTP        0x00C
#define CAN_MCAN_DBTP_TDC    BIT(23)
#define CAN_MCAN_DBTP_DBRP   GENMASK(20, 16)
#define CAN_MCAN_DBTP_DTSEG1 GENMASK(12, 8)
#define CAN_MCAN_DBTP_DTSEG2 GENMASK(7, 4)
#define CAN_MCAN_DBTP_DSJW   GENMASK(3, 0)
 
/* Test register */
#define CAN_MCAN_TEST       0x010
#define CAN_MCAN_TEST_SVAL  BIT(21)
#define CAN_MCAN_TEST_TXBNS GENMASK(20, 16)
#define CAN_MCAN_TEST_PVAL  BIT(13)
#define CAN_MCAN_TEST_TXBNP GENMASK(12, 8)
#define CAN_MCAN_TEST_RX    BIT(7)
#define CAN_MCAN_TEST_TX    GENMASK(6, 5)
#define CAN_MCAN_TEST_LBCK  BIT(4)
 
/* RAM Watchdog register */
#define CAN_MCAN_RWD     0x014
#define CAN_MCAN_RWD_WDV GENMASK(15, 8)
#define CAN_MCAN_RWD_WDC GENMASK(7, 0)
 
/* CC Control register */
#define CAN_MCAN_CCCR      0x018
#define CAN_MCAN_CCCR_NISO BIT(15)
#define CAN_MCAN_CCCR_TXP  BIT(14)
#define CAN_MCAN_CCCR_EFBI BIT(13)
#define CAN_MCAN_CCCR_PXHD BIT(12)
#define CAN_MCAN_CCCR_WMM  BIT(11)
#define CAN_MCAN_CCCR_UTSU BIT(10)
#define CAN_MCAN_CCCR_BRSE BIT(9)
#define CAN_MCAN_CCCR_FDOE BIT(8)
#define CAN_MCAN_CCCR_TEST BIT(7)
#define CAN_MCAN_CCCR_DAR  BIT(6)
#define CAN_MCAN_CCCR_MON  BIT(5)
#define CAN_MCAN_CCCR_CSR  BIT(4)
#define CAN_MCAN_CCCR_CSA  BIT(3)
#define CAN_MCAN_CCCR_ASM  BIT(2)
#define CAN_MCAN_CCCR_CCE  BIT(1)
#define CAN_MCAN_CCCR_INIT BIT(0)
 
/* Nominal Bit Timing & Prescaler register */
#define CAN_MCAN_NBTP        0x01C
#define CAN_MCAN_NBTP_NSJW   GENMASK(31, 25)
#define CAN_MCAN_NBTP_NBRP   GENMASK(24, 16)
#define CAN_MCAN_NBTP_NTSEG1 GENMASK(15, 8)
#define CAN_MCAN_NBTP_NTSEG2 GENMASK(6, 0)
 
/* Timestamp Counter Configuration register */
#define CAN_MCAN_TSCC     0x020
#define CAN_MCAN_TSCC_TCP GENMASK(19, 16)
#define CAN_MCAN_TSCC_TSS GENMASK(1, 0)
 
/* Timestamp Counter Value register */
#define CAN_MCAN_TSCV     0x024
#define CAN_MCAN_TSCV_TSC GENMASK(15, 0)
 
/* Timeout Counter Configuration register */
#define CAN_MCAN_TOCC      0x028
#define CAN_MCAN_TOCC_TOP  GENMASK(31, 16)
#define CAN_MCAN_TOCC_TOS  GENMASK(2, 1)
#define CAN_MCAN_TOCC_ETOC BIT(1)
 
/* Timeout Counter Value register */
#define CAN_MCAN_TOCV     0x02C
#define CAN_MCAN_TOCV_TOC GENMASK(15, 0)
 
/* Error Counter register */
#define CAN_MCAN_ECR     0x040
#define CAN_MCAN_ECR_CEL GENMASK(23, 16)
#define CAN_MCAN_ECR_RP  BIT(15)
#define CAN_MCAN_ECR_REC GENMASK(14, 8)
#define CAN_MCAN_ECR_TEC GENMASK(7, 0)
 
/* Protocol Status register */
#define CAN_MCAN_PSR      0x044
#define CAN_MCAN_PSR_TDCV GENMASK(22, 16)
#define CAN_MCAN_PSR_PXE  BIT(14)
#define CAN_MCAN_PSR_RFDF BIT(13)
#define CAN_MCAN_PSR_RBRS BIT(12)
#define CAN_MCAN_PSR_RESI BIT(11)
#define CAN_MCAN_PSR_DLEC GENMASK(10, 8)
#define CAN_MCAN_PSR_BO   BIT(7)
#define CAN_MCAN_PSR_EW   BIT(6)
#define CAN_MCAN_PSR_EP   BIT(5)
#define CAN_MCAN_PSR_ACT  GENMASK(4, 3)
#define CAN_MCAN_PSR_LEC  GENMASK(2, 0)
 
enum can_mcan_psr_lec {
        CAN_MCAN_PSR_LEC_NO_ERROR    = 0,
        CAN_MCAN_PSR_LEC_STUFF_ERROR = 1,
        CAN_MCAN_PSR_LEC_FORM_ERROR  = 2,
        CAN_MCAN_PSR_LEC_ACK_ERROR   = 3,
        CAN_MCAN_PSR_LEC_BIT1_ERROR  = 4,
        CAN_MCAN_PSR_LEC_BIT0_ERROR  = 5,
        CAN_MCAN_PSR_LEC_CRC_ERROR   = 6,
        CAN_MCAN_PSR_LEC_NO_CHANGE   = 7
};
 
/* Transmitter Delay Compensation register */
#define CAN_MCAN_TDCR      0x048
#define CAN_MCAN_TDCR_TDCO GENMASK(14, 8)
#define CAN_MCAN_TDCR_TDCF GENMASK(6, 0)
 
/* Interrupt register */
#define CAN_MCAN_IR      0x050
#define CAN_MCAN_IR_ARA  BIT(29)
#define CAN_MCAN_IR_PED  BIT(28)
#define CAN_MCAN_IR_PEA  BIT(27)
#define CAN_MCAN_IR_WDI  BIT(26)
#define CAN_MCAN_IR_BO   BIT(25)
#define CAN_MCAN_IR_EW   BIT(24)
#define CAN_MCAN_IR_EP   BIT(23)
#define CAN_MCAN_IR_ELO  BIT(22)
#define CAN_MCAN_IR_BEU  BIT(21)
#define CAN_MCAN_IR_BEC  BIT(20)
#define CAN_MCAN_IR_DRX  BIT(19)
#define CAN_MCAN_IR_TOO  BIT(18)
#define CAN_MCAN_IR_MRAF BIT(17)
#define CAN_MCAN_IR_TSW  BIT(16)
#define CAN_MCAN_IR_TEFL BIT(15)
#define CAN_MCAN_IR_TEFF BIT(14)
#define CAN_MCAN_IR_TEFW BIT(13)
#define CAN_MCAN_IR_TEFN BIT(12)
#define CAN_MCAN_IR_TFE  BIT(11)
#define CAN_MCAN_IR_TCF  BIT(10)
#define CAN_MCAN_IR_TC   BIT(9)
#define CAN_MCAN_IR_HPM  BIT(8)
#define CAN_MCAN_IR_RF1L BIT(7)
#define CAN_MCAN_IR_RF1F BIT(6)
#define CAN_MCAN_IR_RF1W BIT(5)
#define CAN_MCAN_IR_RF1N BIT(4)
#define CAN_MCAN_IR_RF0L BIT(3)
#define CAN_MCAN_IR_RF0F BIT(2)
#define CAN_MCAN_IR_RF0W BIT(1)
#define CAN_MCAN_IR_RF0N BIT(0)
 
/* Interrupt Enable register */
#define CAN_MCAN_IE       0x054
#define CAN_MCAN_IE_ARAE  BIT(29)
#define CAN_MCAN_IE_PEDE  BIT(28)
#define CAN_MCAN_IE_PEAE  BIT(27)
#define CAN_MCAN_IE_WDIE  BIT(26)
#define CAN_MCAN_IE_BOE   BIT(25)
#define CAN_MCAN_IE_EWE   BIT(24)
#define CAN_MCAN_IE_EPE   BIT(23)
#define CAN_MCAN_IE_ELOE  BIT(22)
#define CAN_MCAN_IE_BEUE  BIT(21)
#define CAN_MCAN_IE_BECE  BIT(20)
#define CAN_MCAN_IE_DRXE  BIT(19)
#define CAN_MCAN_IE_TOOE  BIT(18)
#define CAN_MCAN_IE_MRAFE BIT(17)
#define CAN_MCAN_IE_TSWE  BIT(16)
#define CAN_MCAN_IE_TEFLE BIT(15)
#define CAN_MCAN_IE_TEFFE BIT(14)
#define CAN_MCAN_IE_TEFWE BIT(13)
#define CAN_MCAN_IE_TEFNE BIT(12)
#define CAN_MCAN_IE_TFEE  BIT(11)
#define CAN_MCAN_IE_TCFE  BIT(10)
#define CAN_MCAN_IE_TCE   BIT(9)
#define CAN_MCAN_IE_HPME  BIT(8)
#define CAN_MCAN_IE_RF1LE BIT(7)
#define CAN_MCAN_IE_RF1FE BIT(6)
#define CAN_MCAN_IE_RF1WE BIT(5)
#define CAN_MCAN_IE_RF1NE BIT(4)
#define CAN_MCAN_IE_RF0LE BIT(3)
#define CAN_MCAN_IE_RF0FE BIT(2)
#define CAN_MCAN_IE_RF0WE BIT(1)
#define CAN_MCAN_IE_RF0NE BIT(0)
 
/* Interrupt Line Select register */
#define CAN_MCAN_ILS       0x058
#define CAN_MCAN_ILS_ARAL  BIT(29)
#define CAN_MCAN_ILS_PEDL  BIT(28)
#define CAN_MCAN_ILS_PEAL  BIT(27)
#define CAN_MCAN_ILS_WDIL  BIT(26)
#define CAN_MCAN_ILS_BOL   BIT(25)
#define CAN_MCAN_ILS_EWL   BIT(24)
#define CAN_MCAN_ILS_EPL   BIT(23)
#define CAN_MCAN_ILS_ELOL  BIT(22)
#define CAN_MCAN_ILS_BEUL  BIT(21)
#define CAN_MCAN_ILS_BECL  BIT(20)
#define CAN_MCAN_ILS_DRXL  BIT(19)
#define CAN_MCAN_ILS_TOOL  BIT(18)
#define CAN_MCAN_ILS_MRAFL BIT(17)
#define CAN_MCAN_ILS_TSWL  BIT(16)
#define CAN_MCAN_ILS_TEFLL BIT(15)
#define CAN_MCAN_ILS_TEFFL BIT(14)
#define CAN_MCAN_ILS_TEFWL BIT(13)
#define CAN_MCAN_ILS_TEFNL BIT(12)
#define CAN_MCAN_ILS_TFEL  BIT(11)
#define CAN_MCAN_ILS_TCFL  BIT(10)
#define CAN_MCAN_ILS_TCL   BIT(9)
#define CAN_MCAN_ILS_HPML  BIT(8)
#define CAN_MCAN_ILS_RF1LL BIT(7)
#define CAN_MCAN_ILS_RF1FL BIT(6)
#define CAN_MCAN_ILS_RF1WL BIT(5)
#define CAN_MCAN_ILS_RF1NL BIT(4)
#define CAN_MCAN_ILS_RF0LL BIT(3)
#define CAN_MCAN_ILS_RF0FL BIT(2)
#define CAN_MCAN_ILS_RF0WL BIT(1)
#define CAN_MCAN_ILS_RF0NL BIT(0)
 
/* Interrupt Line Enable register */
#define CAN_MCAN_ILE       0x05C
#define CAN_MCAN_ILE_EINT1 BIT(1)
#define CAN_MCAN_ILE_EINT0 BIT(0)
 
/* Global filter configuration register */
#define CAN_MCAN_GFC      0x080
#define CAN_MCAN_GFC_ANFS GENMASK(5, 4)
#define CAN_MCAN_GFC_ANFE GENMASK(3, 2)
#define CAN_MCAN_GFC_RRFS BIT(1)
#define CAN_MCAN_GFC_RRFE BIT(0)
 
/* Standard ID Filter Configuration register */
#define CAN_MCAN_SIDFC       0x084
#define CAN_MCAN_SIDFC_LSS   GENMASK(23, 16)
#define CAN_MCAN_SIDFC_FLSSA GENMASK(15, 2)
 
/* Extended ID Filter Configuration register */
#define CAN_MCAN_XIDFC       0x088
#define CAN_MCAN_XIDFC_LSS   GENMASK(22, 16)
#define CAN_MCAN_XIDFC_FLESA GENMASK(15, 2)
 
/* Extended ID AND Mask register */
#define CAN_MCAN_XIDAM      0x090
#define CAN_MCAN_XIDAM_EIDM GENMASK(28, 0)
 
/* High Priority Message Status register */
#define CAN_MCAN_HPMS      0x094
#define CAN_MCAN_HPMS_FLST BIT(15)
#define CAN_MCAN_HPMS_FIDX GENMASK(14, 8)
#define CAN_MCAN_HPMS_MSI  GENMASK(7, 6)
#define CAN_MCAN_HPMS_BIDX GENMASK(5, 0)
 
/* New Data 1 register */
#define CAN_MCAN_NDAT1    0x098
#define CAN_MCAN_NDAT1_ND GENMASK(31, 0)
 
/* New Data 2 register */
#define CAN_MCAN_NDAT2    0x09C
#define CAN_MCAN_NDAT2_ND GENMASK(31, 0)
 
/* Rx FIFO 0 Configuration register */
#define CAN_MCAN_RXF0C      0x0A0
#define CAN_MCAN_RXF0C_F0OM BIT(31)
#define CAN_MCAN_RXF0C_F0WM GENMASK(30, 24)
#define CAN_MCAN_RXF0C_F0S  GENMASK(22, 16)
#define CAN_MCAN_RXF0C_F0SA GENMASK(15, 2)
 
/* Rx FIFO 0 Status register */
#define CAN_MCAN_RXF0S      0x0A4
#define CAN_MCAN_RXF0S_RF0L BIT(25)
#define CAN_MCAN_RXF0S_F0F  BIT(24)
#define CAN_MCAN_RXF0S_F0PI GENMASK(21, 16)
#define CAN_MCAN_RXF0S_F0GI GENMASK(13, 8)
#define CAN_MCAN_RXF0S_F0FL GENMASK(6, 0)
 
/* Rx FIFO 0 Acknowledge register */
#define CAN_MCAN_RXF0A      0x0A8
#define CAN_MCAN_RXF0A_F0AI GENMASK(5, 0)
 
/* Rx Buffer Configuration register */
#define CAN_MCAN_RXBC      0x0AC
#define CAN_MCAN_RXBC_RBSA GENMASK(15, 2)
 
/* Rx FIFO 1 Configuration register */
#define CAN_MCAN_RXF1C      0x0B0
#define CAN_MCAN_RXF1C_F1OM BIT(31)
#define CAN_MCAN_RXF1C_F1WM GENMASK(30, 24)
#define CAN_MCAN_RXF1C_F1S  GENMASK(22, 16)
#define CAN_MCAN_RXF1C_F1SA GENMASK(15, 2)
 
/* Rx FIFO 1 Status register */
#define CAN_MCAN_RXF1S      0x0B4
#define CAN_MCAN_RXF1S_RF1L BIT(25)
#define CAN_MCAN_RXF1S_F1F  BIT(24)
#define CAN_MCAN_RXF1S_F1PI GENMASK(21, 16)
#define CAN_MCAN_RXF1S_F1GI GENMASK(13, 8)
#define CAN_MCAN_RXF1S_F1FL GENMASK(6, 0)
 
/* Rx FIFO 1 Acknowledge register */
#define CAN_MCAN_RXF1A      0x0B8
#define CAN_MCAN_RXF1A_F1AI GENMASK(5, 0)
 
/* Rx Buffer/FIFO Element Size Configuration register */
#define CAN_MCAN_RXESC      0x0BC
#define CAN_MCAN_RXESC_RBDS GENMASK(10, 8)
#define CAN_MCAN_RXESC_F1DS GENMASK(6, 4)
#define CAN_MCAN_RXESC_F0DS GENMASK(2, 0)
 
/* Tx Buffer Configuration register */
#define CAN_MCAN_TXBC      0x0C0
#define CAN_MCAN_TXBC_TFQM BIT(30)
#define CAN_MCAN_TXBC_TFQS GENMASK(29, 24)
#define CAN_MCAN_TXBC_NDTB GENMASK(21, 16)
#define CAN_MCAN_TXBC_TBSA GENMASK(15, 2)
 
/* Tx FIFO/Queue Status register */
#define CAN_MCAN_TXFQS       0x0C4
#define CAN_MCAN_TXFQS_TFQF  BIT(21)
#define CAN_MCAN_TXFQS_TFQPI GENMASK(20, 16)
#define CAN_MCAN_TXFQS_TFGI  GENMASK(12, 8)
#define CAN_MCAN_TXFQS_TFFL  GENMASK(5, 0)
 
/* Tx Buffer Element Size Configuration register */
#define CAN_MCAN_TXESC      0x0C8
#define CAN_MCAN_TXESC_TBDS GENMASK(2, 0)
 
/* Tx Buffer Request Pending register */
#define CAN_MCAN_TXBRP     0x0CC
#define CAN_MCAN_TXBRP_TRP GENMASK(31, 0)
 
/* Tx Buffer Add Request register */
#define CAN_MCAN_TXBAR    0x0D0
#define CAN_MCAN_TXBAR_AR GENMASK(31, 0)
 
/* Tx Buffer Cancellation Request register */
#define CAN_MCAN_TXBCR    0x0D4
#define CAN_MCAN_TXBCR_CR GENMASK(31, 0)
 
/* Tx Buffer Transmission Occurred register */
#define CAN_MCAN_TXBTO    0x0D8
#define CAN_MCAN_TXBTO_TO GENMASK(31, 0)
 
/* Tx Buffer Cancellation Finished register */
#define CAN_MCAN_TXBCF    0x0DC
#define CAN_MCAN_TXBCF_CF GENMASK(31, 0)
 
/* Tx Buffer Transmission Interrupt Enable register */
#define CAN_MCAN_TXBTIE     0x0E0
#define CAN_MCAN_TXBTIE_TIE GENMASK(31, 0)
 
/* Tx Buffer Cancellation Finished Interrupt Enable register */
#define CAN_MCAN_TXBCIE      0x0E4
#define CAN_MCAN_TXBCIE_CFIE GENMASK(31, 0)
 
/* Tx Event FIFO Configuration register */
#define CAN_MCAN_TXEFC      0x0F0
#define CAN_MCAN_TXEFC_EFWM GENMASK(29, 24)
#define CAN_MCAN_TXEFC_EFS  GENMASK(21, 16)
#define CAN_MCAN_TXEFC_EFSA GENMASK(15, 2)
 
/* Tx Event FIFO Status register */
#define CAN_MCAN_TXEFS      0x0F4
#define CAN_MCAN_TXEFS_TEFL BIT(25)
#define CAN_MCAN_TXEFS_EFF  BIT(24)
#define CAN_MCAN_TXEFS_EFPI GENMASK(20, 16)
#define CAN_MCAN_TXEFS_EFGI GENMASK(12, 8)
#define CAN_MCAN_TXEFS_EFFL GENMASK(5, 0)
 
/* Tx Event FIFO Acknowledge register */
#define CAN_MCAN_TXEFA      0x0F8
#define CAN_MCAN_TXEFA_EFAI GENMASK(4, 0)
 
#define CAN_MCAN_MRAM_CFG_OFFSET        0
#define CAN_MCAN_MRAM_CFG_STD_FILTER    1
#define CAN_MCAN_MRAM_CFG_EXT_FILTER    2
#define CAN_MCAN_MRAM_CFG_RX_FIFO0      3
#define CAN_MCAN_MRAM_CFG_RX_FIFO1      4
#define CAN_MCAN_MRAM_CFG_RX_BUFFER     5
#define CAN_MCAN_MRAM_CFG_TX_EVENT_FIFO 6
#define CAN_MCAN_MRAM_CFG_TX_BUFFER     7
#define CAN_MCAN_MRAM_CFG_NUM_CELLS     8
 
#define CAN_MCAN_DT_MRAM_OFFSET(node_id)                                                           \
        DT_PROP_BY_IDX(node_id, bosch_mram_cfg, CAN_MCAN_MRAM_CFG_OFFSET)
 
#define CAN_MCAN_DT_MRAM_STD_FILTER_ELEMENTS(node_id)                                              \
        DT_PROP_BY_IDX(node_id, bosch_mram_cfg, CAN_MCAN_MRAM_CFG_STD_FILTER)
 
#define CAN_MCAN_DT_MRAM_EXT_FILTER_ELEMENTS(node_id)                                              \
        DT_PROP_BY_IDX(node_id, bosch_mram_cfg, CAN_MCAN_MRAM_CFG_EXT_FILTER)
 
#define CAN_MCAN_DT_MRAM_RX_FIFO0_ELEMENTS(node_id)                                                \
        DT_PROP_BY_IDX(node_id, bosch_mram_cfg, CAN_MCAN_MRAM_CFG_RX_FIFO0)
 
#define CAN_MCAN_DT_MRAM_RX_FIFO1_ELEMENTS(node_id)                                                \
        DT_PROP_BY_IDX(node_id, bosch_mram_cfg, CAN_MCAN_MRAM_CFG_RX_FIFO1)
 
#define CAN_MCAN_DT_MRAM_RX_BUFFER_ELEMENTS(node_id)                                               \
        DT_PROP_BY_IDX(node_id, bosch_mram_cfg, CAN_MCAN_MRAM_CFG_RX_BUFFER)
 
#define CAN_MCAN_DT_MRAM_TX_EVENT_FIFO_ELEMENTS(node_id)                                           \
        DT_PROP_BY_IDX(node_id, bosch_mram_cfg, CAN_MCAN_MRAM_CFG_TX_EVENT_FIFO)
 
#define CAN_MCAN_DT_MRAM_TX_BUFFER_ELEMENTS(node_id)                                               \
        DT_PROP_BY_IDX(node_id, bosch_mram_cfg, CAN_MCAN_MRAM_CFG_TX_BUFFER)
 
#define CAN_MCAN_DT_MRAM_STD_FILTER_OFFSET(node_id) (0U)
 
#define CAN_MCAN_DT_MRAM_EXT_FILTER_OFFSET(node_id)                                                \
        (CAN_MCAN_DT_MRAM_STD_FILTER_OFFSET(node_id) +                                             \
         CAN_MCAN_DT_MRAM_STD_FILTER_ELEMENTS(node_id) * sizeof(struct can_mcan_std_filter))
 
#define CAN_MCAN_DT_MRAM_RX_FIFO0_OFFSET(node_id)                                                  \
        (CAN_MCAN_DT_MRAM_EXT_FILTER_OFFSET(node_id) +                                             \
         CAN_MCAN_DT_MRAM_EXT_FILTER_ELEMENTS(node_id) * sizeof(struct can_mcan_ext_filter))
 
#define CAN_MCAN_DT_MRAM_RX_FIFO1_OFFSET(node_id)                                                  \
        (CAN_MCAN_DT_MRAM_RX_FIFO0_OFFSET(node_id) +                                               \
         CAN_MCAN_DT_MRAM_RX_FIFO0_ELEMENTS(node_id) * sizeof(struct can_mcan_rx_fifo))
 
#define CAN_MCAN_DT_MRAM_RX_BUFFER_OFFSET(node_id)                                                 \
        (CAN_MCAN_DT_MRAM_RX_FIFO1_OFFSET(node_id) +                                               \
         CAN_MCAN_DT_MRAM_RX_FIFO1_ELEMENTS(node_id) * sizeof(struct can_mcan_rx_fifo))
 
#define CAN_MCAN_DT_MRAM_TX_EVENT_FIFO_OFFSET(node_id)                                             \
        (CAN_MCAN_DT_MRAM_RX_BUFFER_OFFSET(node_id) +                                              \
         CAN_MCAN_DT_MRAM_RX_BUFFER_ELEMENTS(node_id) * sizeof(struct can_mcan_rx_fifo))
 
#define CAN_MCAN_DT_MRAM_TX_BUFFER_OFFSET(node_id)                                                 \
        (CAN_MCAN_DT_MRAM_TX_EVENT_FIFO_OFFSET(node_id) +                                          \
         CAN_MCAN_DT_MRAM_TX_EVENT_FIFO_ELEMENTS(node_id) * sizeof(struct can_mcan_tx_event_fifo))
 
#define CAN_MCAN_DT_MCAN_ADDR(node_id)                                                             \
        COND_CODE_1(DT_NUM_REGS(node_id), ((mm_reg_t)DT_REG_ADDR(node_id)),                        \
                    ((mm_reg_t)DT_REG_ADDR_BY_NAME(node_id, m_can)))
 
#define CAN_MCAN_DT_MRBA(node_id)                                                                  \
        (mem_addr_t)DT_REG_ADDR_BY_NAME(node_id, message_ram)
 
#define CAN_MCAN_DT_MRAM_ADDR(node_id)                                                             \
        (mem_addr_t)(CAN_MCAN_DT_MRBA(node_id) + CAN_MCAN_DT_MRAM_OFFSET(node_id))
 
#define CAN_MCAN_DT_MRAM_SIZE(node_id)                                                             \
        (mem_addr_t)(DT_REG_SIZE_BY_NAME(node_id, message_ram) - CAN_MCAN_DT_MRAM_OFFSET(node_id))
 
#define CAN_MCAN_DT_MRAM_ELEMENTS_SIZE(node_id)                                                    \
        (CAN_MCAN_DT_MRAM_TX_BUFFER_OFFSET(node_id) +                                              \
         CAN_MCAN_DT_MRAM_TX_BUFFER_ELEMENTS(node_id) * sizeof(struct can_mcan_tx_buffer))
 
#define CAN_MCAN_DT_MRAM_DEFINE(node_id, _name)                                                    \
        BUILD_ASSERT(CAN_MCAN_DT_MRAM_OFFSET(node_id) == 0, "offset must be 0");                   \
        static char __nocache_noinit __aligned(4) _name[CAN_MCAN_DT_MRAM_ELEMENTS_SIZE(node_id)];
 
#define CAN_MCAN_DT_BUILD_ASSERT_MRAM_CFG(node_id)                                                 \
        BUILD_ASSERT(CAN_MCAN_DT_MRAM_STD_FILTER_ELEMENTS(node_id) <= 128,                         \
                     "Maximum Standard filter elements exceeded");                                 \
        BUILD_ASSERT(CAN_MCAN_DT_MRAM_EXT_FILTER_ELEMENTS(node_id) <= 64,                          \
                     "Maximum Extended filter elements exceeded");                                 \
        BUILD_ASSERT(CAN_MCAN_DT_MRAM_RX_FIFO0_ELEMENTS(node_id) <= 64,                            \
                     "Maximum Rx FIFO 0 elements exceeded");                                       \
        BUILD_ASSERT(CAN_MCAN_DT_MRAM_RX_FIFO1_ELEMENTS(node_id) <= 64,                            \
                     "Maximum Rx FIFO 1 elements exceeded");                                       \
        BUILD_ASSERT(CAN_MCAN_DT_MRAM_RX_BUFFER_ELEMENTS(node_id) <= 64,                           \
                     "Maximum Rx Buffer elements exceeded");                                       \
        BUILD_ASSERT(CAN_MCAN_DT_MRAM_TX_EVENT_FIFO_ELEMENTS(node_id) <= 32,                       \
                     "Maximum Tx Buffer elements exceeded");                                       \
        BUILD_ASSERT(CAN_MCAN_DT_MRAM_TX_BUFFER_ELEMENTS(node_id) <= 32,                           \
                     "Maximum Tx Buffer elements exceeded");
 
#define CAN_MCAN_DT_INST_MRAM_OFFSET(inst) CAN_MCAN_DT_MRAM_OFFSET(DT_DRV_INST(inst))
 
#define CAN_MCAN_DT_INST_MRAM_STD_FILTER_ELEMENTS(inst)                                            \
        CAN_MCAN_DT_MRAM_STD_FILTER_ELEMENTS(DT_DRV_INST(inst))
 
#define CAN_MCAN_DT_INST_MRAM_EXT_FILTER_ELEMENTS(inst)                                            \
        CAN_MCAN_DT_MRAM_EXT_FILTER_ELEMENTS(DT_DRV_INST(inst))
 
#define CAN_MCAN_DT_INST_MRAM_RX_FIFO0_ELEMENTS(inst)                                              \
        CAN_MCAN_DT_MRAM_RX_FIFO0_ELEMENTS(DT_DRV_INST(inst))
 
#define CAN_MCAN_DT_INST_MRAM_RX_FIFO1_ELEMENTS(inst)                                              \
        CAN_MCAN_DT_MRAM_RX_FIFO1_ELEMENTS(DT_DRV_INST(inst))
 
#define CAN_MCAN_DT_INST_MRAM_RX_BUFFER_ELEMENTS(inst)                                             \
        CAN_MCAN_DT_MRAM_RX_BUFFER_ELEMENTS(DT_DRV_INST(inst))
 
#define CAN_MCAN_DT_INST_MRAM_TX_EVENT_FIFO_ELEMENTS(inst)                                         \
        CAN_MCAN_DT_MRAM_TX_EVENT_FIFO_ELEMENTS(DT_DRV_INST(inst))
 
#define CAN_MCAN_DT_INST_MRAM_TX_BUFFER_ELEMENTS(inst)                                             \
        CAN_MCAN_DT_MRAM_TX_BUFFER_ELEMENTS(DT_DRV_INST(inst))
 
#define CAN_MCAN_DT_INST_MRAM_STD_FILTER_OFFSET(inst)                                              \
        CAN_MCAN_DT_MRAM_STD_FILTER_OFFSET(DT_DRV_INST(inst))
 
#define CAN_MCAN_DT_INST_MRAM_EXT_FILTER_OFFSET(inst)                                              \
        CAN_MCAN_DT_MRAM_EXT_FILTER_OFFSET(DT_DRV_INST(inst))
 
#define CAN_MCAN_DT_INST_MRAM_RX_FIFO0_OFFSET(inst)                                                \
        CAN_MCAN_DT_MRAM_RX_FIFO0_OFFSET(DT_DRV_INST(inst))
 
#define CAN_MCAN_DT_INST_MRAM_RX_FIFO1_OFFSET(inst)                                                \
        CAN_MCAN_DT_MRAM_RX_FIFO1_OFFSET(DT_DRV_INST(inst))
 
#define CAN_MCAN_DT_INST_MRAM_RX_BUFFER_OFFSET(inst)                                               \
        CAN_MCAN_DT_MRAM_RX_BUFFER_OFFSET(DT_DRV_INST(inst))
 
#define CAN_MCAN_DT_INST_MRAM_TX_EVENT_FIFO_OFFSET(inst)                                           \
        CAN_MCAN_DT_MRAM_TX_EVENT_FIFO_OFFSET(DT_DRV_INST(inst))
 
#define CAN_MCAN_DT_INST_MRAM_TX_BUFFER_OFFSET(inst)                                               \
        CAN_MCAN_DT_MRAM_TX_BUFFER_OFFSET(DT_DRV_INST(inst))
 
#define CAN_MCAN_DT_INST_MCAN_ADDR(inst) CAN_MCAN_DT_MCAN_ADDR(DT_DRV_INST(inst))
 
#define CAN_MCAN_DT_INST_MRBA(inst) CAN_MCAN_DT_MRBA(DT_DRV_INST(inst))
 
#define CAN_MCAN_DT_INST_MRAM_ADDR(inst) CAN_MCAN_DT_MRAM_ADDR(DT_DRV_INST(inst))
 
#define CAN_MCAN_DT_INST_MRAM_SIZE(inst) CAN_MCAN_DT_MRAM_SIZE(DT_DRV_INST(inst))
 
#define CAN_MCAN_DT_INST_MRAM_ELEMENTS_SIZE(inst) CAN_MCAN_DT_MRAM_ELEMENTS_SIZE(DT_DRV_INST(inst))
 
#define CAN_MCAN_DT_INST_MRAM_DEFINE(inst, _name) CAN_MCAN_DT_MRAM_DEFINE(DT_DRV_INST(inst), _name)
 
#define CAN_MCAN_TIMING_MIN_INITIALIZER                                                            \
        {                                                                                          \
                .sjw = 1,                                                                          \
                .prop_seg = 0,                                                                     \
                .phase_seg1 = 2,                                                                   \
                .phase_seg2 = 2,                                                                   \
                .prescaler = 1                                                                     \
        }
 
#define CAN_MCAN_TIMING_MAX_INITIALIZER                                                            \
        {                                                                                          \
                .sjw = 128,                                                                        \
                .prop_seg = 0,                                                                     \
                .phase_seg1 = 256,                                                                 \
                .phase_seg2 = 128,                                                                 \
                .prescaler = 512                                                                   \
        }
 
#define CAN_MCAN_TIMING_DATA_MIN_INITIALIZER                                                       \
        {                                                                                          \
                .sjw = 1,                                                                          \
                .prop_seg = 0,                                                                     \
                .phase_seg1 = 1,                                                                   \
                .phase_seg2 = 1,                                                                   \
                .prescaler = 1                                                                     \
        }
 
#define CAN_MCAN_TIMING_DATA_MAX_INITIALIZER                                                       \
        {                                                                                          \
                .sjw = 16,                                                                         \
                .prop_seg = 0,                                                                     \
                .phase_seg1 = 32,                                                                  \
                .phase_seg2 = 16,                                                                  \
                .prescaler = 32                                                                    \
        }
 
#define CAN_MCAN_DT_INST_BUILD_ASSERT_MRAM_CFG(inst)                                               \
        CAN_MCAN_DT_BUILD_ASSERT_MRAM_CFG(DT_DRV_INST(inst))
 
struct can_mcan_rx_fifo_hdr {
        union {
                struct {
                        uint32_t ext_id: 29;
                        uint32_t rtr: 1;
                        uint32_t xtd: 1;
                        uint32_t esi: 1;
                };
                struct {
                        uint32_t pad1: 18;
                        uint32_t std_id: 11;
                        uint32_t pad2: 3;
                };
        };
        uint32_t rxts: 16;
        uint32_t dlc: 4;
        uint32_t brs: 1;
        uint32_t fdf: 1;
        uint32_t res: 2;
        uint32_t fidx: 7;
        uint32_t anmf: 1;
} __packed __aligned(4);
 
struct can_mcan_rx_fifo {
        struct can_mcan_rx_fifo_hdr hdr;
        union {
                uint8_t data[64];
                uint32_t data_32[16];
        };
} __packed __aligned(4);
 
struct can_mcan_tx_buffer_hdr {
        union {
                struct {
                        uint32_t ext_id: 29;
                        uint32_t rtr: 1;
                        uint32_t xtd: 1;
                        uint32_t esi: 1;
                };
                struct {
                        uint32_t pad1: 18;
                        uint32_t std_id: 11;
                        uint32_t pad2: 3;
                };
        };
        uint16_t res1;
        uint8_t dlc: 4;
        uint8_t brs: 1;
        uint8_t fdf: 1;
        uint8_t tsce: 1;
        uint8_t efc: 1;
        uint8_t mm;
} __packed __aligned(4);
 
struct can_mcan_tx_buffer {
        struct can_mcan_tx_buffer_hdr hdr;
        union {
                uint8_t data[64];
                uint32_t data_32[16];
        };
} __packed __aligned(4);
 
struct can_mcan_tx_event_fifo {
        union {
                struct {
                        uint32_t ext_id: 29;
                        uint32_t rtr: 1;
                        uint32_t xtd: 1;
                        uint32_t esi: 1;
                };
                struct {
                        uint32_t pad1: 18;
                        uint32_t std_id: 11;
                        uint32_t pad2: 3;
                };
        };
        uint16_t txts;
        uint8_t dlc: 4;
        uint8_t brs: 1;
        uint8_t fdf: 1;
        uint8_t et: 2;
        uint8_t mm;
} __packed __aligned(4);
 
/* Bosch M_CAN Standard/Extended Filter Element Configuration (SFEC/EFEC) */
#define CAN_MCAN_XFEC_DISABLE    0x0
#define CAN_MCAN_XFEC_FIFO0      0x1
#define CAN_MCAN_XFEC_FIFO1      0x2
#define CAN_MCAN_XFEC_REJECT     0x3
#define CAN_MCAN_XFEC_PRIO       0x4
#define CAN_MCAN_XFEC_PRIO_FIFO0 0x5
#define CAN_MCAN_XFEC_PRIO_FIFO1 0x7
 
/* Bosch M_CAN Standard Filter Type (SFT) */
#define CAN_MCAN_SFT_RANGE    0x0
#define CAN_MCAN_SFT_DUAL     0x1
#define CAN_MCAN_SFT_CLASSIC  0x2
#define CAN_MCAN_SFT_DISABLED 0x3
 
struct can_mcan_std_filter {
        uint32_t sfid2: 11;
        uint32_t res: 5;
        uint32_t sfid1: 11;
        uint32_t sfec: 3;
        uint32_t sft: 2;
} __packed __aligned(4);
 
/* Bosch M_CAN Extended Filter Type (EFT) */
#define CAN_MCAN_EFT_RANGE_XIDAM 0x0
#define CAN_MCAN_EFT_DUAL        0x1
#define CAN_MCAN_EFT_CLASSIC     0x2
#define CAN_MCAN_EFT_RANGE       0x3
 
struct can_mcan_ext_filter {
        uint32_t efid1: 29;
        uint32_t efec: 3;
        uint32_t efid2: 29;
        uint32_t esync: 1;
        uint32_t eft: 2;
} __packed __aligned(4);
 
struct can_mcan_data {
        struct can_driver_data common;
        struct k_mutex lock;
        struct k_sem tx_sem;
        struct k_mutex tx_mtx;
        void *custom;
} __aligned(4);
 
typedef int (*can_mcan_read_reg_t)(const struct device *dev, uint16_t reg, uint32_t *val);
 
typedef int (*can_mcan_write_reg_t)(const struct device *dev, uint16_t reg, uint32_t val);
 
typedef int (*can_mcan_read_mram_t)(const struct device *dev, uint16_t offset, void *dst,
                                    size_t len);
 
typedef int (*can_mcan_write_mram_t)(const struct device *dev, uint16_t offset, const void *src,
                                     size_t len);
 
typedef int (*can_mcan_clear_mram_t)(const struct device *dev, uint16_t offset, size_t len);
 
struct can_mcan_ops {
        can_mcan_read_reg_t read_reg;
        can_mcan_write_reg_t write_reg;
        can_mcan_read_mram_t read_mram;
        can_mcan_write_mram_t write_mram;
        can_mcan_clear_mram_t clear_mram;
};
 
struct can_mcan_tx_callback {
        can_tx_callback_t function;
        void *user_data;
};
 
struct can_mcan_rx_callback {
        can_rx_callback_t function;
        void *user_data;
};
 
struct can_mcan_callbacks {
        struct can_mcan_tx_callback *tx;
        struct can_mcan_rx_callback *std;
        struct can_mcan_rx_callback *ext;
        uint8_t num_tx;
        uint8_t num_std;
        uint8_t num_ext;
};
 
#define CAN_MCAN_CALLBACKS_DEFINE(_name, _tx, _std, _ext)                                          \
        static struct can_mcan_tx_callback _name##_tx_cbs[_tx];                                    \
        static struct can_mcan_rx_callback _name##_std_cbs[_std];                                  \
        static struct can_mcan_rx_callback _name##_ext_cbs[_ext];                                  \
        static const struct can_mcan_callbacks _name = {                                           \
                .tx = _name##_tx_cbs,                                                              \
                .std = _name##_std_cbs,                                                            \
                .ext = _name##_ext_cbs,                                                            \
                .num_tx = _tx,                                                                     \
                .num_std = _std,                                                                   \
                .num_ext = _ext,                                                                   \
        }
 
#define CAN_MCAN_DT_CALLBACKS_DEFINE(node_id, _name)                                               \
        CAN_MCAN_CALLBACKS_DEFINE(_name, CAN_MCAN_DT_MRAM_TX_BUFFER_ELEMENTS(node_id),             \
                                  CAN_MCAN_DT_MRAM_STD_FILTER_ELEMENTS(node_id),                   \
                                  CAN_MCAN_DT_MRAM_EXT_FILTER_ELEMENTS(node_id))
 
#define CAN_MCAN_DT_INST_CALLBACKS_DEFINE(inst, _name)                                             \
        CAN_MCAN_DT_CALLBACKS_DEFINE(DT_DRV_INST(inst), _name)
 
struct can_mcan_config {
        const struct can_driver_config common;
        const struct can_mcan_ops *ops;
        const struct can_mcan_callbacks *callbacks;
        uint16_t mram_elements[CAN_MCAN_MRAM_CFG_NUM_CELLS];
        uint16_t mram_offsets[CAN_MCAN_MRAM_CFG_NUM_CELLS];
        size_t mram_size;
        const void *custom;
};
 
#define CAN_MCAN_DT_MRAM_ELEMENTS_GET(node_id)                                                     \
        {                                                                                          \
                0, /* offset cell */                                                               \
                        CAN_MCAN_DT_MRAM_STD_FILTER_ELEMENTS(node_id),                             \
                        CAN_MCAN_DT_MRAM_EXT_FILTER_ELEMENTS(node_id),                             \
                        CAN_MCAN_DT_MRAM_RX_FIFO0_ELEMENTS(node_id),                               \
                        CAN_MCAN_DT_MRAM_RX_FIFO1_ELEMENTS(node_id),                               \
                        CAN_MCAN_DT_MRAM_RX_BUFFER_ELEMENTS(node_id),                              \
                        CAN_MCAN_DT_MRAM_TX_EVENT_FIFO_ELEMENTS(node_id),                          \
                        CAN_MCAN_DT_MRAM_TX_BUFFER_ELEMENTS(node_id)                               \
        }
 
#define CAN_MCAN_DT_MRAM_OFFSETS_GET(node_id)                                                      \
        {                                                                                          \
                0, /* offset cell */                                                               \
                        CAN_MCAN_DT_MRAM_STD_FILTER_OFFSET(node_id),                               \
                        CAN_MCAN_DT_MRAM_EXT_FILTER_OFFSET(node_id),                               \
                        CAN_MCAN_DT_MRAM_RX_FIFO0_OFFSET(node_id),                                 \
                        CAN_MCAN_DT_MRAM_RX_FIFO1_OFFSET(node_id),                                 \
                        CAN_MCAN_DT_MRAM_RX_BUFFER_OFFSET(node_id),                                \
                        CAN_MCAN_DT_MRAM_TX_EVENT_FIFO_OFFSET(node_id),                            \
                        CAN_MCAN_DT_MRAM_TX_BUFFER_OFFSET(node_id)                                 \
        }
 
#ifdef CONFIG_CAN_FD_MODE
#define CAN_MCAN_DT_CONFIG_GET(node_id, _custom, _ops, _cbs)                                       \
        {                                                                                          \
                .common = CAN_DT_DRIVER_CONFIG_GET(node_id, 0, 8000000),                           \
                .ops = _ops,                                                                       \
                .callbacks = _cbs,                                                                 \
                .mram_elements = CAN_MCAN_DT_MRAM_ELEMENTS_GET(node_id),                           \
                .mram_offsets = CAN_MCAN_DT_MRAM_OFFSETS_GET(node_id),                             \
                .mram_size = CAN_MCAN_DT_MRAM_ELEMENTS_SIZE(node_id),                              \
                .custom = _custom,                                                                 \
        }
#else /* CONFIG_CAN_FD_MODE */
#define CAN_MCAN_DT_CONFIG_GET(node_id, _custom, _ops, _cbs)                                       \
        {                                                                                          \
                .common = CAN_DT_DRIVER_CONFIG_GET(node_id, 0, 1000000),                           \
                .ops = _ops,                                                                       \
                .callbacks = _cbs,                                                                 \
                .mram_elements = CAN_MCAN_DT_MRAM_ELEMENTS_GET(node_id),                           \
                .mram_offsets = CAN_MCAN_DT_MRAM_OFFSETS_GET(node_id),                             \
                .mram_size = CAN_MCAN_DT_MRAM_ELEMENTS_SIZE(node_id),                              \
                .custom = _custom,                                                                 \
        }
#endif /* !CONFIG_CAN_FD_MODE */
 
#define CAN_MCAN_DT_CONFIG_INST_GET(inst, _custom, _ops, _cbs)                                     \
        CAN_MCAN_DT_CONFIG_GET(DT_DRV_INST(inst), _custom, _ops, _cbs)
 
#define CAN_MCAN_DATA_INITIALIZER(_custom)                                                         \
        {                                                                                          \
                .custom = _custom,                                                                 \
        }
 
static inline int can_mcan_sys_read_reg(mm_reg_t base, uint16_t reg, uint32_t *val)
{
        *val = sys_read32(base + reg);
 
        return 0;
}
 
static inline int can_mcan_sys_write_reg(mm_reg_t base, uint16_t reg, uint32_t val)
{
        sys_write32(val, base + reg);
 
        return 0;
}
 
static inline int can_mcan_sys_read_mram(mem_addr_t base, uint16_t offset, void *dst, size_t len)
{
        volatile uint32_t *src32 = (volatile uint32_t *)(base + offset);
        uint32_t *dst32 = (uint32_t *)dst;
        size_t len32 = len / sizeof(uint32_t);
 
        __ASSERT(base % 4U == 0U, "base must be a multiple of 4");
        __ASSERT(offset % 4U == 0U, "offset must be a multiple of 4");
        __ASSERT(POINTER_TO_UINT(dst) % 4U == 0U, "dst must be 32-bit aligned");
        __ASSERT(len % 4U == 0U, "len must be a multiple of 4");
 
#if defined(CONFIG_CACHE_MANAGEMENT) && defined(CONFIG_DCACHE)
        int err;
 
        err = sys_cache_data_invd_range((void *)(base + offset), len);
        if (err != 0) {
                return err;
        }
#endif /* !defined(CONFIG_CACHE_MANAGEMENT) && defined(CONFIG_DCACHE) */
 
        while (len32-- > 0) {
                *dst32++ = *src32++;
        }
 
        return 0;
}
 
static inline int can_mcan_sys_write_mram(mem_addr_t base, uint16_t offset, const void *src,
                                          size_t len)
{
        volatile uint32_t *dst32 = (volatile uint32_t *)(base + offset);
        const uint32_t *src32 = (const uint32_t *)src;
        size_t len32 = len / sizeof(uint32_t);
 
        __ASSERT(base % 4U == 0U, "base must be a multiple of 4");
        __ASSERT(offset % 4U == 0U, "offset must be a multiple of 4");
        __ASSERT(POINTER_TO_UINT(src) % 4U == 0U, "src must be 32-bit aligned");
        __ASSERT(len % 4U == 0U, "len must be a multiple of 4");
 
        while (len32-- > 0) {
                *dst32++ = *src32++;
        }
 
#if defined(CONFIG_CACHE_MANAGEMENT) && defined(CONFIG_DCACHE)
        return sys_cache_data_flush_range((void *)(base + offset), len);
#else /* defined(CONFIG_CACHE_MANAGEMENT) && defined(CONFIG_DCACHE) */
        return 0;
#endif /* !defined(CONFIG_CACHE_MANAGEMENT) && defined(CONFIG_DCACHE) */
}
 
static inline int can_mcan_sys_clear_mram(mem_addr_t base, uint16_t offset, size_t len)
{
        volatile uint32_t *dst32 = (volatile uint32_t *)(base + offset);
        size_t len32 = len / sizeof(uint32_t);
 
        __ASSERT(base % 4U == 0U, "base must be a multiple of 4");
        __ASSERT(offset % 4U == 0U, "offset must be a multiple of 4");
        __ASSERT(len % 4U == 0U, "len must be a multiple of 4");
 
        while (len32-- > 0) {
                *dst32++ = 0U;
        }
 
#if defined(CONFIG_CACHE_MANAGEMENT) && defined(CONFIG_DCACHE)
        return sys_cache_data_flush_range((void *)(base + offset), len);
#else /* defined(CONFIG_CACHE_MANAGEMENT) && defined(CONFIG_DCACHE) */
        return 0;
#endif /* !defined(CONFIG_CACHE_MANAGEMENT) && defined(CONFIG_DCACHE) */
}
 
int can_mcan_read_reg(const struct device *dev, uint16_t reg, uint32_t *val);
 
int can_mcan_write_reg(const struct device *dev, uint16_t reg, uint32_t val);
 
static inline int can_mcan_read_mram(const struct device *dev, uint16_t offset, void *dst,
                                     size_t len)
{
        const struct can_mcan_config *config = dev->config;
 
        return config->ops->read_mram(dev, offset, dst, len);
}
 
static inline int can_mcan_write_mram(const struct device *dev, uint16_t offset, const void *src,
                                      size_t len)
{
        const struct can_mcan_config *config = dev->config;
 
        return config->ops->write_mram(dev, offset, src, len);
}
 
static inline int can_mcan_clear_mram(const struct device *dev, uint16_t offset, size_t len)
{
        const struct can_mcan_config *config = dev->config;
 
        return config->ops->clear_mram(dev, offset, len);
}
 
int can_mcan_configure_mram(const struct device *dev, uintptr_t mrba, uintptr_t mram);
 
int can_mcan_init(const struct device *dev);
 
void can_mcan_line_0_isr(const struct device *dev);
 
void can_mcan_line_1_isr(const struct device *dev);
 
void can_mcan_enable_configuration_change(const struct device *dev);
 
int can_mcan_get_capabilities(const struct device *dev, can_mode_t *cap);
 
int can_mcan_start(const struct device *dev);
 
int can_mcan_stop(const struct device *dev);
 
int can_mcan_set_mode(const struct device *dev, can_mode_t mode);
 
int can_mcan_set_timing(const struct device *dev, const struct can_timing *timing);
 
int can_mcan_set_timing_data(const struct device *dev, const struct can_timing *timing_data);
 
#ifdef CONFIG_CAN_MANUAL_RECOVERY_MODE
int can_mcan_recover(const struct device *dev, k_timeout_t timeout);
#endif /* CONFIG_CAN_MANUAL_RECOVERY_MODE */
 
int can_mcan_send(const struct device *dev, const struct can_frame *frame, k_timeout_t timeout,
                  can_tx_callback_t callback, void *user_data);
 
int can_mcan_get_max_filters(const struct device *dev, bool ide);
 
int can_mcan_add_rx_filter(const struct device *dev, can_rx_callback_t callback, void *user_data,
                           const struct can_filter *filter);
 
void can_mcan_remove_rx_filter(const struct device *dev, int filter_id);
 
int can_mcan_get_state(const struct device *dev, enum can_state *state,
                       struct can_bus_err_cnt *err_cnt);
 
void can_mcan_set_state_change_callback(const struct device *dev,
                                        can_state_change_callback_t callback, void *user_data);
 
#endif /* ZEPHYR_INCLUDE_DRIVERS_CAN_CAN_MCAN_H_ */