arch/m68k/include/asm/amigayle.h

Source file repositories/reference/linux-study-clean/arch/m68k/include/asm/amigayle.h

File Facts

System
Linux kernel
Corpus path
arch/m68k/include/asm/amigayle.h
Extension
.h
Size
3271 bytes
Lines
114
Domain
Architecture Layer
Bucket
arch/m68k
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

struct GAYLE {
	u_char cardstatus;
	u_char pad0[0x1000-1];

	u_char intreq;
	u_char pad1[0x1000-1];

	u_char inten;
	u_char pad2[0x1000-1];

	u_char config;
	u_char pad3[0x1000-1];
};

#define GAYLE_ADDRESS	(0xda8000)	/* gayle main registers base address */

#define GAYLE_RESET	(0xa40000)	/* write 0x00 to start reset,
                                           read 1 byte to stop reset */

#define gayle (*(volatile struct GAYLE *)(zTwoBase+GAYLE_ADDRESS))
#define gayle_reset (*(volatile u_char *)(zTwoBase+GAYLE_RESET))

#define gayle_attribute ((volatile u_char *)(GAYLE_ATTRIBUTE))

#if 0
#define gayle_inb(a) readb( GAYLE_IO+(a)+(((a)&1)*GAYLE_ODD) )
#define gayle_outb(v,a) writeb( v, GAYLE_IO+(a)+(((a)&1)*GAYLE_ODD) )

#define gayle_inw(a) readw( GAYLE_IO+(a) )
#define gayle_outw(v,a) writew( v, GAYLE_IO+(a) )
#endif

/* GAYLE_CARDSTATUS bit def */

#define GAYLE_CS_CCDET		0x40	/* credit card detect */
#define GAYLE_CS_BVD1		0x20	/* battery voltage detect 1 */
#define GAYLE_CS_SC		0x20	/* credit card status change */
#define GAYLE_CS_BVD2		0x10	/* battery voltage detect 2 */
#define GAYLE_CS_DA		0x10	/* digital audio */
#define GAYLE_CS_WR		0x08	/* write enable (1 == enabled) */
#define GAYLE_CS_BSY		0x04	/* credit card busy */
#define GAYLE_CS_IRQ		0x04	/* interrupt request */

/* GAYLE_IRQ bit def */

#define GAYLE_IRQ_IDE		0x80
#define GAYLE_IRQ_CCDET		0x40
#define GAYLE_IRQ_BVD1		0x20
#define GAYLE_IRQ_SC		0x20
#define GAYLE_IRQ_BVD2		0x10
#define GAYLE_IRQ_DA		0x10
#define GAYLE_IRQ_WR		0x08
#define GAYLE_IRQ_BSY		0x04
#define GAYLE_IRQ_IRQ		0x04
#define GAYLE_IRQ_IDEACK1	0x02
#define GAYLE_IRQ_IDEACK0	0x01

/* GAYLE_CONFIG bit def
   (bit 0-1 for program voltage, bit 2-3 for access speed */

#define GAYLE_CFG_0V		0x00
#define GAYLE_CFG_5V		0x01
#define GAYLE_CFG_12V		0x02

#define GAYLE_CFG_100NS		0x08
#define GAYLE_CFG_150NS		0x04
#define GAYLE_CFG_250NS		0x00
#define GAYLE_CFG_720NS		0x0c

struct gayle_ide_platform_data {
	unsigned long base;
	unsigned long irqport;
	int explicit_ack;	/* A1200 IDE needs explicit ack */
};

#endif /* asm-m68k/amigayle.h */

Annotation

Implementation Notes