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/* SPDX-License-Identifier: GPL-2.0 */
/* sunsab.h: Register Definitions for the Siemens SAB82532 DUSCC
*
* Copyright (C) 1997 Eddie C. Dost (ecd@skynet.be)
*/
#ifndef _SUNSAB_H
#define _SUNSAB_H
struct sab82532_async_rd_regs {
u8 rfifo[0x20]; /* Receive FIFO */
u8 star; /* Status Register */
u8 __pad1;
u8 mode; /* Mode Register */
u8 timr; /* Timer Register */
u8 xon; /* XON Character */
u8 xoff; /* XOFF Character */
u8 tcr; /* Termination Character Register */
u8 dafo; /* Data Format */
u8 rfc; /* RFIFO Control Register */
u8 __pad2;
u8 rbcl; /* Receive Byte Count Low */
u8 rbch; /* Receive Byte Count High */
u8 ccr0; /* Channel Configuration Register 0 */
u8 ccr1; /* Channel Configuration Register 1 */
u8 ccr2; /* Channel Configuration Register 2 */
u8 ccr3; /* Channel Configuration Register 3 */
u8 __pad3[4];
u8 vstr; /* Version Status Register */
u8 __pad4[3];
u8 gis; /* Global Interrupt Status */
u8 ipc; /* Interrupt Port Configuration */
u8 isr0; /* Interrupt Status 0 */
u8 isr1; /* Interrupt Status 1 */
u8 pvr; /* Port Value Register */
u8 pis; /* Port Interrupt Status */
u8 pcr; /* Port Configuration Register */
u8 ccr4; /* Channel Configuration Register 4 */
};
struct sab82532_async_wr_regs {
u8 xfifo[0x20]; /* Transmit FIFO */
u8 cmdr; /* Command Register */
u8 __pad1;
u8 mode;
u8 timr;
u8 xon;
u8 xoff;
u8 tcr;
u8 dafo;
u8 rfc;
u8 __pad2;
u8 xbcl; /* Transmit Byte Count Low */
u8 xbch; /* Transmit Byte Count High */
u8 ccr0;
u8 ccr1;
u8 ccr2;
u8 ccr3;
u8 tsax; /* Time-Slot Assignment Reg. Transmit */
u8 tsar; /* Time-Slot Assignment Reg. Receive */
u8 xccr; /* Transmit Channel Capacity Register */
u8 rccr; /* Receive Channel Capacity Register */
u8 bgr; /* Baud Rate Generator Register */
u8 tic; /* Transmit Immediate Character */
u8 mxn; /* Mask XON Character */
u8 mxf; /* Mask XOFF Character */
u8 iva; /* Interrupt Vector Address */
u8 ipc;
u8 imr0; /* Interrupt Mask Register 0 */
u8 imr1; /* Interrupt Mask Register 1 */
u8 pvr;
u8 pim; /* Port Interrupt Mask */
u8 pcr;
u8 ccr4;
};
struct sab82532_async_rw_regs { /* Read/Write registers */
u8 __pad1[0x20];
u8 __pad2;
u8 __pad3;
u8 mode;
u8 timr;
u8 xon;
u8 xoff;
u8 tcr;
u8 dafo;
u8 rfc;
u8 __pad4;
u8 __pad5;
u8 __pad6;
u8 ccr0;
u8 ccr1;
u8 ccr2;
u8 ccr3;
u8 __pad7;
u8 __pad8;
u8 __pad9;
u8 __pad10;
u8 __pad11;
u8 __pad12;
u8 __pad13;
u8 __pad14;
u8 __pad15;
u8 ipc;
u8 __pad16;
u8 __pad17;
u8 pvr;
u8 __pad18;
u8 pcr;
u8 ccr4;
};
union sab82532_async_regs {
__volatile__ struct sab82532_async_rd_regs r;
__volatile__ struct sab82532_async_wr_regs w;
__volatile__ struct sab82532_async_rw_regs rw;
};
union sab82532_irq_status {
unsigned short stat;
struct {
unsigned char isr0;
unsigned char isr1;
} sreg;
};
/* irqflags bits */
#define SAB82532_ALLS 0x00000001
#define SAB82532_XPR 0x00000002
#define SAB82532_REGS_PENDING 0x00000004
/* RFIFO Status Byte */
#define SAB82532_RSTAT_PE 0x80
#define SAB82532_RSTAT_FE 0x40
#define SAB82532_RSTAT_PARITY 0x01
/* Status Register (STAR) */
#define SAB82532_STAR_XDOV 0x80
#define SAB82532_STAR_XFW 0x40
#define SAB82532_STAR_RFNE 0x20
#define SAB82532_STAR_FCS 0x10
#define SAB82532_STAR_TEC 0x08
#define SAB82532_STAR_CEC 0x04
#define SAB82532_STAR_CTS 0x02
/* Command Register (CMDR) */
#define SAB82532_CMDR_RMC 0x80
#define SAB82532_CMDR_RRES 0x40
#define SAB82532_CMDR_RFRD 0x20
#define SAB82532_CMDR_STI 0x10
#define SAB82532_CMDR_XF 0x08
#define SAB82532_CMDR_XRES 0x01
/* Mode Register (MODE) */
#define SAB82532_MODE_FRTS 0x40
#define SAB82532_MODE_FCTS 0x20
#define SAB82532_MODE_FLON 0x10
#define SAB82532_MODE_RAC 0x08
#define SAB82532_MODE_RTS 0x04
#define SAB82532_MODE_TRS 0x02
#define SAB82532_MODE_TLP 0x01
/* Timer Register (TIMR) */
#define SAB82532_TIMR_CNT_MASK 0xe0
#define SAB82532_TIMR_VALUE_MASK 0x1f
/* Data Format (DAFO) */
#define SAB82532_DAFO_XBRK 0x40
#define SAB82532_DAFO_STOP 0x20
#define SAB82532_DAFO_PAR_SPACE 0x00
#define SAB82532_DAFO_PAR_ODD 0x08
#define SAB82532_DAFO_PAR_EVEN 0x10
#define SAB82532_DAFO_PAR_MARK 0x18
#define SAB82532_DAFO_PARE 0x04
#define SAB82532_DAFO_CHL8 0x00
#define SAB82532_DAFO_CHL7 0x01
#define SAB82532_DAFO_CHL6 0x02
#define SAB82532_DAFO_CHL5 0x03
/* RFIFO Control Register (RFC) */
#define SAB82532_RFC_DPS 0x40
#define SAB82532_RFC_DXS 0x20
#define SAB82532_RFC_RFDF 0x10
#define SAB82532_RFC_RFTH_1 0x00
#define SAB82532_RFC_RFTH_4 0x04
#define SAB82532_RFC_RFTH_16 0x08
#define SAB82532_RFC_RFTH_32 0x0c
#define SAB82532_RFC_TCDE 0x01
/* Received Byte Count High (RBCH) */
#define SAB82532_RBCH_DMA 0x80
#define SAB82532_RBCH_CAS 0x20
/* Transmit Byte Count High (XBCH) */
#define SAB82532_XBCH_DMA 0x80
#define SAB82532_XBCH_CAS 0x20
#define SAB82532_XBCH_XC 0x10
/* Channel Configuration Register 0 (CCR0) */
#define SAB82532_CCR0_PU 0x80
#define SAB82532_CCR0_MCE 0x40
#define SAB82532_CCR0_SC_NRZ 0x00
#define SAB82532_CCR0_SC_NRZI 0x08
#define SAB82532_CCR0_SC_FM0 0x10
#define SAB82532_CCR0_SC_FM1 0x14
#define SAB82532_CCR0_SC_MANCH 0x18
#define SAB82532_CCR0_SM_HDLC 0x00
#define SAB82532_CCR0_SM_SDLC_LOOP 0x01
#define SAB82532_CCR0_SM_BISYNC 0x02
#define SAB82532_CCR0_SM_ASYNC 0x03
/* Channel Configuration Register 1 (CCR1) */
#define SAB82532_CCR1_ODS 0x10
#define SAB82532_CCR1_BCR 0x08
#define SAB82532_CCR1_CM_MASK 0x07
/* Channel Configuration Register 2 (CCR2) */
#define SAB82532_CCR2_SOC1 0x80
#define SAB82532_CCR2_SOC0 0x40
#define SAB82532_CCR2_BR9 0x80
#define SAB82532_CCR2_BR8 0x40
#define SAB82532_CCR2_BDF 0x20
#define SAB82532_CCR2_SSEL 0x10
#define SAB82532_CCR2_XCS0 0x20
#define SAB82532_CCR2_RCS0 0x10
#define SAB82532_CCR2_TOE 0x08
#define SAB82532_CCR2_RWX 0x04
#define SAB82532_CCR2_DIV 0x01
/* Channel Configuration Register 3 (CCR3) */
#define SAB82532_CCR3_PSD 0x01
/* Time Slot Assignment Register Transmit (TSAX) */
#define SAB82532_TSAX_TSNX_MASK 0xfc
#define SAB82532_TSAX_XCS2 0x02 /* see also CCR2 */
#define SAB82532_TSAX_XCS1 0x01
/* Time Slot Assignment Register Receive (TSAR) */
#define SAB82532_TSAR_TSNR_MASK 0xfc
#define SAB82532_TSAR_RCS2 0x02 /* see also CCR2 */
#define SAB82532_TSAR_RCS1 0x01
/* Version Status Register (VSTR) */
#define SAB82532_VSTR_CD 0x80
#define SAB82532_VSTR_DPLA 0x40
#define SAB82532_VSTR_VN_MASK 0x0f
#define SAB82532_VSTR_VN_1 0x00
#define SAB82532_VSTR_VN_2 0x01
#define SAB82532_VSTR_VN_3_2 0x02
/* Global Interrupt Status Register (GIS) */
#define SAB82532_GIS_PI 0x80
#define SAB82532_GIS_ISA1 0x08
#define SAB82532_GIS_ISA0 0x04
#define SAB82532_GIS_ISB1 0x02
#define SAB82532_GIS_ISB0 0x01
/* Interrupt Vector Address (IVA) */
#define SAB82532_IVA_MASK 0xf1
/* Interrupt Port Configuration (IPC) */
#define SAB82532_IPC_VIS 0x80
#define SAB82532_IPC_SLA1 0x10
#define SAB82532_IPC_SLA0 0x08
#define SAB82532_IPC_CASM 0x04
#define SAB82532_IPC_IC_OPEN_DRAIN 0x00
#define SAB82532_IPC_IC_ACT_LOW 0x01
#define SAB82532_IPC_IC_ACT_HIGH 0x03
/* Interrupt Status Register 0 (ISR0) */
#define SAB82532_ISR0_TCD 0x80
#define SAB82532_ISR0_TIME 0x40
#define SAB82532_ISR0_PERR 0x20
#define SAB82532_ISR0_FERR 0x10
#define SAB82532_ISR0_PLLA 0x08
#define SAB82532_ISR0_CDSC 0x04
#define SAB82532_ISR0_RFO 0x02
#define SAB82532_ISR0_RPF 0x01
/* Interrupt Status Register 1 (ISR1) */
#define SAB82532_ISR1_BRK 0x80
#define SAB82532_ISR1_BRKT 0x40
#define SAB82532_ISR1_ALLS 0x20
#define SAB82532_ISR1_XOFF 0x10
#define SAB82532_ISR1_TIN 0x08
#define SAB82532_ISR1_CSC 0x04
#define SAB82532_ISR1_XON 0x02
#define SAB82532_ISR1_XPR 0x01
/* Interrupt Mask Register 0 (IMR0) */
#define SAB82532_IMR0_TCD 0x80
#define SAB82532_IMR0_TIME 0x40
#define SAB82532_IMR0_PERR 0x20
#define SAB82532_IMR0_FERR 0x10
#define SAB82532_IMR0_PLLA 0x08
#define SAB82532_IMR0_CDSC 0x04
#define SAB82532_IMR0_RFO 0x02
#define SAB82532_IMR0_RPF 0x01
/* Interrupt Mask Register 1 (IMR1) */
#define SAB82532_IMR1_BRK 0x80
#define SAB82532_IMR1_BRKT 0x40
#define SAB82532_IMR1_ALLS 0x20
#define SAB82532_IMR1_XOFF 0x10
#define SAB82532_IMR1_TIN 0x08
#define SAB82532_IMR1_CSC 0x04
#define SAB82532_IMR1_XON 0x02
#define SAB82532_IMR1_XPR 0x01
/* Port Interrupt Status Register (PIS) */
#define SAB82532_PIS_SYNC_B 0x08
#define SAB82532_PIS_DTR_B 0x04
#define SAB82532_PIS_DTR_A 0x02
#define SAB82532_PIS_SYNC_A 0x01
/* Channel Configuration Register 4 (CCR4) */
#define SAB82532_CCR4_MCK4 0x80
#define SAB82532_CCR4_EBRG 0x40
#define SAB82532_CCR4_TST1 0x20
#define SAB82532_CCR4_ICD 0x10
#endif /* !(_SUNSAB_H) */
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