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/* $Id: sh-sci.h,v 1.4 2004/02/19 16:43:56 lethal Exp $
*
* linux/drivers/serial/sh-sci.h
*
* SuperH on-chip serial module support. (SCI with no FIFO / with FIFO)
* Copyright (C) 1999, 2000 Niibe Yutaka
* Copyright (C) 2000 Greg Banks
* Copyright (C) 2002, 2003 Paul Mundt
* Modified to support multiple serial ports. Stuart Menefy (May 2000).
* Modified to support SH7300(SH-Mobile) SCIF. Takashi Kusuda (Jun 2003).
* Modified to support H8/300 Series Yoshinori Sato (Feb 2004).
*/
#include <linux/config.h>
#include <linux/serial_core.h>
#if defined(__H8300H__) || defined(__H8300S__)
#include <asm/gpio.h>
#if defined(CONFIG_H83007) || defined(CONFIG_H83068)
#include <asm/regs306x.h>
#endif
#if defined(CONFIG_H8S2678)
#include <asm/regs267x.h>
#endif
#endif
/* Offsets into the sci_port->irqs array */
#define SCIx_ERI_IRQ 0
#define SCIx_RXI_IRQ 1
#define SCIx_TXI_IRQ 2
/* ERI, RXI, TXI, BRI */
#define SCI_IRQS { 23, 24, 25, 0 }
#define SH3_SCIF_IRQS { 56, 57, 59, 58 }
#define SH3_IRDA_IRQS { 52, 53, 55, 54 }
#define SH4_SCIF_IRQS { 40, 41, 43, 42 }
#define STB1_SCIF1_IRQS {23, 24, 26, 25 }
#define SH7760_SCIF0_IRQS { 52, 53, 55, 54 }
#define SH7760_SCIF1_IRQS { 72, 73, 75, 74 }
#define SH7760_SCIF2_IRQS { 76, 77, 79, 78 }
#define SH7300_SCIF0_IRQS {80, 80, 80, 80 }
#define SH73180_SCIF_IRQS {80, 81, 83, 82 }
#define H8300H_SCI_IRQS0 {52, 53, 54, 0 }
#define H8300H_SCI_IRQS1 {56, 57, 58, 0 }
#define H8300H_SCI_IRQS2 {60, 61, 62, 0 }
#define H8S_SCI_IRQS0 {88, 89, 90, 0 }
#define H8S_SCI_IRQS1 {92, 93, 94, 0 }
#define H8S_SCI_IRQS2 {96, 97, 98, 0 }
#define SH5_SCIF_IRQS {39, 40, 42, 0 }
#if defined(CONFIG_CPU_SUBTYPE_SH7708)
# define SCI_NPORTS 1
# define SCSPTR 0xffffff7c /* 8 bit */
# define SCSCR_INIT(port) 0x30 /* TIE=0,RIE=0,TE=1,RE=1 */
# define SCI_ONLY
#elif defined(CONFIG_CPU_SUBTYPE_SH7707) || defined(CONFIG_CPU_SUBTYPE_SH7709)
# define SCI_NPORTS 3
# define SCPCR 0xA4000116 /* 16 bit SCI and SCIF */
# define SCPDR 0xA4000136 /* 8 bit SCI and SCIF */
# define SCSCR_INIT(port) 0x30 /* TIE=0,RIE=0,TE=1,RE=1 */
# define SCI_AND_SCIF
#elif defined(CONFIG_CPU_SUBTYPE_SH7705)
# define SCIF0 0xA4400000
# define SCIF2 0xA4410000
# define SCSMR_Ir 0xA44A0000
# define IRDA_SCIF SCIF0
# define SCI_NPORTS 2
# define SCPCR 0xA4000116
# define SCPDR 0xA4000136
/* Set the clock source,
* SCIF2 (0xA4410000) -> External clock, SCK pin used as clock input
* SCIF0 (0xA4400000) -> Internal clock, SCK pin as serial clock output
*/
# define SCSCR_INIT(port) (port->mapbase == SCIF2) ? 0xF3 : 0xF0
# define SCIF_ONLY
#elif defined(CONFIG_SH_RTS7751R2D)
# define SCI_NPORTS 1
# define SCSPTR1 0xffe0001c /* 8 bit SCI */
# define SCSPTR2 0xFFE80020 /* 16 bit SCIF */
# define SCIF_ORER 0x0001 /* overrun error bit */
# define SCSCR_INIT(port) 0x3a /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
# define SCIF_ONLY
#elif defined(CONFIG_CPU_SUBTYPE_SH7750) || defined(CONFIG_CPU_SUBTYPE_SH7751)
# define SCI_NPORTS 2
# define SCSPTR1 0xffe0001c /* 8 bit SCI */
# define SCSPTR2 0xFFE80020 /* 16 bit SCIF */
# define SCIF_ORER 0x0001 /* overrun error bit */
# define SCSCR_INIT(port) (((port)->type == PORT_SCI) ? \
0x30 /* TIE=0,RIE=0,TE=1,RE=1 */ : \
0x38 /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */ )
# define SCI_AND_SCIF
#elif defined(CONFIG_CPU_SUBTYPE_SH7760)
# define SCI_NPORTS 3
# define SCSPTR0 0xfe600000 /* 16 bit SCIF */
# define SCSPTR1 0xfe610000 /* 16 bit SCIF */
# define SCSPTR2 0xfe620000 /* 16 bit SCIF */
# define SCIF_ORER 0x0001 /* overrun error bit */
# define SCSCR_INIT(port) 0x38 /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
# define SCIF_ONLY
#elif defined(CONFIG_CPU_SUBTYPE_SH7300)
# define SCI_NPORTS 1
# define SCPCR 0xA4050116 /* 16 bit SCIF */
# define SCPDR 0xA4050136 /* 16 bit SCIF */
# define SCSCR_INIT(port) 0x0030 /* TIE=0,RIE=0,TE=1,RE=1 */
# define SCIF_ONLY
#elif defined(CONFIG_CPU_SUBTYPE_SH73180)
# define SCI_NPORTS 1
# define SCPDR 0xA4050138 /* 16 bit SCIF */
# define SCSPTR2 SCPDR
# define SCIF_ORER 0x0001 /* overrun error bit */
# define SCSCR_INIT(port) 0x0038 /* TIE=0,RIE=0,TE=1,RE=1 */
# define SCIF_ONLY
#elif defined(CONFIG_CPU_SUBTYPE_SH4_202)
# define SCI_NPORTS 1
# define SCSPTR2 0xffe80020 /* 16 bit SCIF */
# define SCIF_ORER 0x0001 /* overrun error bit */
# define SCSCR_INIT(port) 0x38 /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
# define SCIF_ONLY
#elif defined(CONFIG_CPU_SUBTYPE_ST40STB1)
# define SCI_NPORTS 2
# define SCSPTR1 0xffe00020 /* 16 bit SCIF */
# define SCSPTR2 0xffe80020 /* 16 bit SCIF */
# define SCIF_ORER 0x0001 /* overrun error bit */
# define SCSCR_INIT(port) 0x38 /* TIE=0,RIE=0,TE=1,RE=1,REIE=1 */
# define SCIF_ONLY
#elif defined(CONFIG_CPU_SUBTYPE_SH5_101) || defined(CONFIG_CPU_SUBTYPE_SH5_103)
# include <asm/hardware.h>
# define SCIF_BASE_ADDR 0x01030000
# define SCIF_ADDR_SH5 PHYS_PERIPHERAL_BLOCK+SCIF_BASE_ADDR
# define SCIF_PTR2_OFFS 0x0000020
# define SCIF_LSR2_OFFS 0x0000024
# define SCI_NPORTS 1
# define SCI_INIT { \
{ {}, PORT_SCIF, 0, \
SH5_SCIF_IRQS, sci_init_pins_scif } \
}
# define SCSPTR2 ((port->mapbase)+SCIF_PTR2_OFFS) /* 16 bit SCIF */
# define SCLSR2 ((port->mapbase)+SCIF_LSR2_OFFS) /* 16 bit SCIF */
# define SCSCR_INIT(port) 0x38 /* TIE=0,RIE=0,
TE=1,RE=1,REIE=1 */
# define SCIF_ONLY
#elif defined(CONFIG_H83007) || defined(CONFIG_H83068)
# define SCI_NPORTS 3
# define SCSCR_INIT(port) 0x30 /* TIE=0,RIE=0,TE=1,RE=1 */
# define SCI_ONLY
# define H8300_SCI_DR(ch) *(volatile char *)(P1DR + h8300_sci_pins[ch].port)
#elif defined(CONFIG_H8S2678)
# define SCI_NPORTS 3
# define SCSCR_INIT(port) 0x30 /* TIE=0,RIE=0,TE=1,RE=1 */
# define SCI_ONLY
# define H8300_SCI_DR(ch) *(volatile char *)(P1DR + h8300_sci_pins[ch].port)
#else
# error CPU subtype not defined
#endif
/* SCSCR */
#define SCI_CTRL_FLAGS_TIE 0x80 /* all */
#define SCI_CTRL_FLAGS_RIE 0x40 /* all */
#define SCI_CTRL_FLAGS_TE 0x20 /* all */
#define SCI_CTRL_FLAGS_RE 0x10 /* all */
#if defined(CONFIG_CPU_SUBTYPE_SH7750) || defined(CONFIG_CPU_SUBTYPE_SH7751)
#define SCI_CTRL_FLAGS_REIE 0x08 /* 7750 SCIF */
#else
#define SCI_CTRL_FLAGS_REIE 0
#endif
/* SCI_CTRL_FLAGS_MPIE 0x08 * 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
/* SCI_CTRL_FLAGS_TEIE 0x04 * 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
/* SCI_CTRL_FLAGS_CKE1 0x02 * all */
/* SCI_CTRL_FLAGS_CKE0 0x01 * 7707 SCI/SCIF, 7708 SCI, 7709 SCI/SCIF, 7750 SCI */
/* SCxSR SCI */
#define SCI_TDRE 0x80 /* 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
#define SCI_RDRF 0x40 /* 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
#define SCI_ORER 0x20 /* 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
#define SCI_FER 0x10 /* 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
#define SCI_PER 0x08 /* 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
#define SCI_TEND 0x04 /* 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
/* SCI_MPB 0x02 * 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
/* SCI_MPBT 0x01 * 7707 SCI, 7708 SCI, 7709 SCI, 7750 SCI */
#define SCI_ERRORS ( SCI_PER | SCI_FER | SCI_ORER)
/* SCxSR SCIF */
#define SCIF_ER 0x0080 /* 7705 SCIF, 7707 SCIF, 7709 SCIF, 7750 SCIF */
#define SCIF_TEND 0x0040 /* 7705 SCIF, 7707 SCIF, 7709 SCIF, 7750 SCIF */
#define SCIF_TDFE 0x0020 /* 7705 SCIF, 7707 SCIF, 7709 SCIF, 7750 SCIF */
#define SCIF_BRK 0x0010 /* 7705 SCIF, 7707 SCIF, 7709 SCIF, 7750 SCIF */
#define SCIF_FER 0x0008 /* 7705 SCIF, 7707 SCIF, 7709 SCIF, 7750 SCIF */
#define SCIF_PER 0x0004 /* 7705 SCIF, 7707 SCIF, 7709 SCIF, 7750 SCIF */
#define SCIF_RDF 0x0002 /* 7705 SCIF, 7707 SCIF, 7709 SCIF, 7750 SCIF */
#define SCIF_DR 0x0001 /* 7705 SCIF, 7707 SCIF, 7709 SCIF, 7750 SCIF */
#if defined(CONFIG_CPU_SUBTYPE_SH7300) || defined(CONFIG_CPU_SUBTYPE_SH7705)
#define SCIF_ORER 0x0200
#define SCIF_ERRORS ( SCIF_PER | SCIF_FER | SCIF_ER | SCIF_BRK | SCIF_ORER)
#define SCIF_RFDC_MASK 0x007f
#define SCIF_TXROOM_MAX 64
#else
#define SCIF_ERRORS ( SCIF_PER | SCIF_FER | SCIF_ER | SCIF_BRK)
#define SCIF_RFDC_MASK 0x001f
#define SCIF_TXROOM_MAX 16
#endif
#if defined(SCI_ONLY)
# define SCxSR_TEND(port) SCI_TEND
# define SCxSR_ERRORS(port) SCI_ERRORS
# define SCxSR_RDxF(port) SCI_RDRF
# define SCxSR_TDxE(port) SCI_TDRE
# define SCxSR_ORER(port) SCI_ORER
# define SCxSR_FER(port) SCI_FER
# define SCxSR_PER(port) SCI_PER
# define SCxSR_BRK(port) 0x00
# define SCxSR_RDxF_CLEAR(port) 0xbc
# define SCxSR_ERROR_CLEAR(port) 0xc4
# define SCxSR_TDxE_CLEAR(port) 0x78
# define SCxSR_BREAK_CLEAR(port) 0xc4
#elif defined(SCIF_ONLY)
# define SCxSR_TEND(port) SCIF_TEND
# define SCxSR_ERRORS(port) SCIF_ERRORS
# define SCxSR_RDxF(port) SCIF_RDF
# define SCxSR_TDxE(port) SCIF_TDFE
#if defined(CONFIG_CPU_SUBTYPE_SH7300) || defined(CONFIG_CPU_SUBTYPE_SH7705)
# define SCxSR_ORER(port) SCIF_ORER
#else
# define SCxSR_ORER(port) 0x0000
#endif
# define SCxSR_FER(port) SCIF_FER
# define SCxSR_PER(port) SCIF_PER
# define SCxSR_BRK(port) SCIF_BRK
#if defined(CONFIG_CPU_SUBTYPE_SH7300) || defined(CONFIG_CPU_SUBTYPE_SH7705)
# define SCxSR_RDxF_CLEAR(port) (sci_in(port,SCxSR)&0xfffc)
# define SCxSR_ERROR_CLEAR(port) (sci_in(port,SCxSR)&0xfd73)
# define SCxSR_TDxE_CLEAR(port) (sci_in(port,SCxSR)&0xffdf)
# define SCxSR_BREAK_CLEAR(port) (sci_in(port,SCxSR)&0xffe3)
#else
/* SH7705 can also use this, clearing is same between 7705 and 7709 and 7300 */
# define SCxSR_RDxF_CLEAR(port) 0x00fc
# define SCxSR_ERROR_CLEAR(port) 0x0073
# define SCxSR_TDxE_CLEAR(port) 0x00df
# define SCxSR_BREAK_CLEAR(port) 0x00e3
#endif
#else
# define SCxSR_TEND(port) (((port)->type == PORT_SCI) ? SCI_TEND : SCIF_TEND)
# define SCxSR_ERRORS(port) (((port)->type == PORT_SCI) ? SCI_ERRORS : SCIF_ERRORS)
# define SCxSR_RDxF(port) (((port)->type == PORT_SCI) ? SCI_RDRF : SCIF_RDF)
# define SCxSR_TDxE(port) (((port)->type == PORT_SCI) ? SCI_TDRE : SCIF_TDFE)
# define SCxSR_ORER(port) (((port)->type == PORT_SCI) ? SCI_ORER : 0x0000)
# define SCxSR_FER(port) (((port)->type == PORT_SCI) ? SCI_FER : SCIF_FER)
# define SCxSR_PER(port) (((port)->type == PORT_SCI) ? SCI_PER : SCIF_PER)
# define SCxSR_BRK(port) (((port)->type == PORT_SCI) ? 0x00 : SCIF_BRK)
# define SCxSR_RDxF_CLEAR(port) (((port)->type == PORT_SCI) ? 0xbc : 0x00fc)
# define SCxSR_ERROR_CLEAR(port) (((port)->type == PORT_SCI) ? 0xc4 : 0x0073)
# define SCxSR_TDxE_CLEAR(port) (((port)->type == PORT_SCI) ? 0x78 : 0x00df)
# define SCxSR_BREAK_CLEAR(port) (((port)->type == PORT_SCI) ? 0xc4 : 0x00e3)
#endif
/* SCFCR */
#define SCFCR_RFRST 0x0002
#define SCFCR_TFRST 0x0004
#define SCFCR_TCRST 0x4000
#define SCFCR_MCE 0x0008
#define SCI_MAJOR 204
#define SCI_MINOR_START 8
/* Generic serial flags */
#define SCI_RX_THROTTLE 0x0000001
#define SCI_MAGIC 0xbabeface
/*
* Events are used to schedule things to happen at timer-interrupt
* time, instead of at rs interrupt time.
*/
#define SCI_EVENT_WRITE_WAKEUP 0
struct sci_port {
struct uart_port port;
int type;
unsigned char irqs[4]; /* ERI, RXI, TXI, BRI */
void (*init_pins)(struct uart_port *port, unsigned int cflag);
int break_flag;
struct timer_list break_timer;
};
#define SCI_IN(size, offset) \
unsigned int addr = port->mapbase + (offset); \
if ((size) == 8) { \
return ctrl_inb(addr); \
} else { \
return ctrl_inw(addr); \
}
#define SCI_OUT(size, offset, value) \
unsigned int addr = port->mapbase + (offset); \
if ((size) == 8) { \
ctrl_outb(value, addr); \
} else { \
ctrl_outw(value, addr); \
}
#define CPU_SCIx_FNS(name, sci_offset, sci_size, scif_offset, scif_size)\
static inline unsigned int sci_##name##_in(struct uart_port *port) \
{ \
if (port->type == PORT_SCI) { \
SCI_IN(sci_size, sci_offset) \
} else { \
SCI_IN(scif_size, scif_offset); \
} \
} \
static inline void sci_##name##_out(struct uart_port *port, unsigned int value) \
{ \
if (port->type == PORT_SCI) { \
SCI_OUT(sci_size, sci_offset, value) \
} else { \
SCI_OUT(scif_size, scif_offset, value); \
} \
}
#define CPU_SCIF_FNS(name, scif_offset, scif_size) \
static inline unsigned int sci_##name##_in(struct uart_port *port) \
{ \
SCI_IN(scif_size, scif_offset); \
} \
static inline void sci_##name##_out(struct uart_port *port, unsigned int value) \
{ \
SCI_OUT(scif_size, scif_offset, value); \
}
#define CPU_SCI_FNS(name, sci_offset, sci_size) \
static inline unsigned int sci_##name##_in(struct uart_port* port) \
{ \
SCI_IN(sci_size, sci_offset); \
} \
static inline void sci_##name##_out(struct uart_port* port, unsigned int value) \
{ \
SCI_OUT(sci_size, sci_offset, value); \
}
#ifdef CONFIG_CPU_SH3
#if defined(CONFIG_CPU_SUBTYPE_SH7300) || defined(CONFIG_CPU_SUBTYPE_SH7705)
#define SCIF_FNS(name, scif_offset, scif_size) \
CPU_SCIF_FNS(name, scif_offset, scif_size)
#else
#define SCIx_FNS(name, sh3_sci_offset, sh3_sci_size, sh4_sci_offset, sh4_sci_size, \
sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size, \
h8_sci_offset, h8_sci_size) \
CPU_SCIx_FNS(name, sh3_sci_offset, sh3_sci_size, sh3_scif_offset, sh3_scif_size)
#define SCIF_FNS(name, sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size) \
CPU_SCIF_FNS(name, sh3_scif_offset, sh3_scif_size)
#endif
#elif defined(__H8300H__) || defined(__H8300S__)
#define SCIx_FNS(name, sh3_sci_offset, sh3_sci_size, sh4_sci_offset, sh4_sci_size, \
sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size, \
h8_sci_offset, h8_sci_size) \
CPU_SCI_FNS(name, h8_sci_offset, h8_sci_size)
#define SCIF_FNS(name, sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size)
#else
#define SCIx_FNS(name, sh3_sci_offset, sh3_sci_size, sh4_sci_offset, sh4_sci_size, \
sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size, \
h8_sci_offset, h8_sci_size) \
CPU_SCIx_FNS(name, sh4_sci_offset, sh4_sci_size, sh4_scif_offset, sh4_scif_size)
#define SCIF_FNS(name, sh3_scif_offset, sh3_scif_size, sh4_scif_offset, sh4_scif_size) \
CPU_SCIF_FNS(name, sh4_scif_offset, sh4_scif_size)
#endif
#if defined(CONFIG_CPU_SUBTYPE_SH7300) || defined(CONFIG_CPU_SUBTYPE_SH7705)
SCIF_FNS(SCSMR, 0x00, 16)
SCIF_FNS(SCBRR, 0x04, 8)
SCIF_FNS(SCSCR, 0x08, 16)
SCIF_FNS(SCTDSR, 0x0c, 8)
SCIF_FNS(SCFER, 0x10, 16)
SCIF_FNS(SCxSR, 0x14, 16)
SCIF_FNS(SCFCR, 0x18, 16)
SCIF_FNS(SCFDR, 0x1c, 16)
SCIF_FNS(SCxTDR, 0x20, 8)
SCIF_FNS(SCxRDR, 0x24, 8)
SCIF_FNS(SCLSR, 0x24, 16)
#else
/* reg SCI/SH3 SCI/SH4 SCIF/SH3 SCIF/SH4 SCI/H8*/
/* name off sz off sz off sz off sz off sz*/
SCIx_FNS(SCSMR, 0x00, 8, 0x00, 8, 0x00, 8, 0x00, 16, 0x00, 8)
SCIx_FNS(SCBRR, 0x02, 8, 0x04, 8, 0x02, 8, 0x04, 8, 0x01, 8)
SCIx_FNS(SCSCR, 0x04, 8, 0x08, 8, 0x04, 8, 0x08, 16, 0x02, 8)
SCIx_FNS(SCxTDR, 0x06, 8, 0x0c, 8, 0x06, 8, 0x0C, 8, 0x03, 8)
SCIx_FNS(SCxSR, 0x08, 8, 0x10, 8, 0x08, 16, 0x10, 16, 0x04, 8)
SCIx_FNS(SCxRDR, 0x0a, 8, 0x14, 8, 0x0A, 8, 0x14, 8, 0x05, 8)
SCIF_FNS(SCFCR, 0x0c, 8, 0x18, 16)
SCIF_FNS(SCFDR, 0x0e, 16, 0x1C, 16)
SCIF_FNS(SCSPTR, 0, 0, 0x20, 16)
SCIF_FNS(SCLSR, 0, 0, 0x24, 16)
#endif
#define sci_in(port, reg) sci_##reg##_in(port)
#define sci_out(port, reg, value) sci_##reg##_out(port, value)
/* H8/300 series SCI pins assignment */
#if defined(__H8300H__) || defined(__H8300S__)
static const struct __attribute__((packed)) {
int port; /* GPIO port no */
unsigned short rx,tx; /* GPIO bit no */
} h8300_sci_pins[] = {
#if defined(CONFIG_H83007) || defined(CONFIG_H83068)
{ /* SCI0 */
.port =
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