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/* SPDX-License-Identifier: GPL-2.0 */
/*
 * I/O Processor (IOP) defines and structures, mostly snagged from A/UX
 * header files.
 *
 * The original header from which this was taken is copyrighted. I've done some
 * rewriting (in fact my changes make this a bit more readable, IMHO) but some
 * more should be done.
 */

/*
 * This is the base address of the IOPs. Use this as the address of
 * a "struct iop" (see below) to see where the actual registers fall.
 */

#define SCC_IOP_BASE_IIFX	(0x50F04000)
#define ISM_IOP_BASE_IIFX	(0x50F12000)

#define SCC_IOP_BASE_QUADRA	(0x50F0C000)
#define ISM_IOP_BASE_QUADRA	(0x50F1E000)

/* IOP status/control register bits: */

#define	IOP_BYPASS	0x01	/* bypass-mode hardware access */
#define	IOP_AUTOINC	0x02	/* allow autoincrement of ramhi/lo */
#define	IOP_RUN		0x04	/* set to 0 to reset IOP chip */
#define	IOP_IRQ		0x08	/* generate IRQ to IOP if 1 */
#define	IOP_INT0	0x10	/* intr priority from IOP to host */
#define	IOP_INT1	0x20	/* intr priority from IOP to host */
#define	IOP_HWINT	0x40	/* IRQ from hardware; bypass mode only */
#define	IOP_DMAINACTIVE	0x80	/* no DMA request active; bypass mode only */

#define NUM_IOPS	2
#define NUM_IOP_CHAN	7
#define NUM_IOP_MSGS	NUM_IOP_CHAN*8
#define IOP_MSG_LEN	32

/* IOP reference numbers, used by the globally-visible iop_xxx functions */

#define IOP_NUM_SCC	0
#define IOP_NUM_ISM	1

/* IOP channel states */

#define IOP_MSG_IDLE		0       /* idle                         */
#define IOP_MSG_NEW		1       /* new message sent             */
#define IOP_MSG_RCVD		2       /* message received; processing */
#define IOP_MSG_COMPLETE	3       /* message processing complete  */

/* IOP message status codes */

#define IOP_MSGSTATUS_UNUSED	0	/* Unused message structure        */
#define IOP_MSGSTATUS_WAITING	1	/* waiting for channel             */
#define IOP_MSGSTATUS_SENT	2	/* message sent, awaiting reply    */
#define IOP_MSGSTATUS_COMPLETE	3	/* message complete and reply rcvd */
#define IOP_MSGSTATUS_UNSOL	6	/* message is unsolicited          */

/* IOP memory addresses of the members of the mac_iop_kernel structure. */

#define IOP_ADDR_MAX_SEND_CHAN	0x0200
#define IOP_ADDR_SEND_STATE	0x0201
#define IOP_ADDR_PATCH_CTRL	0x021F
#define IOP_ADDR_SEND_MSG	0x0220
#define IOP_ADDR_MAX_RECV_CHAN	0x0300
#define IOP_ADDR_RECV_STATE	0x0301
#define IOP_ADDR_ALIVE		0x031F
#define IOP_ADDR_RECV_MSG	0x0320

#ifndef __ASSEMBLY__

/*
 * IOP Control registers, staggered because in usual Apple style they were
 * too lazy to decode the A0 bit. This structure is assumed to begin at
 * one of the xxx_IOP_BASE addresses given above.
 */

struct mac_iop {
    __u8	ram_addr_hi;	/* shared RAM address hi byte */
    __u8	pad0;
    __u8	ram_addr_lo;	/* shared RAM address lo byte */
    __u8	pad1;
    __u8	status_ctrl;	/* status/control register */
    __u8	pad2[3];
    __u8	ram_data;	/* RAM data byte at ramhi/lo */

    __u8	pad3[23];

    /* Bypass-mode hardware access registers */

    union {
	struct {		/* SCC registers */
	    __u8 sccb_cmd;	/* SCC B command reg */
	    __u8 pad4;
	    __u8 scca_cmd;	/* SCC A command reg */
	    __u8 pad5;
	    __u8 sccb_data;	/* SCC B data */
	    __u8 pad6;
	    __u8 scca_data;	/* SCC A data */
	} scc_regs;

	struct {		/* ISM registers */
	    __u8 wdata;		/* write a data byte */
	    __u8 pad7;
	    __u8 wmark;		/* write a mark byte */
	    __u8 pad8;
	    __u8 wcrc;		/* write 2-byte crc to disk */
	    __u8 pad9;
	    __u8 wparams;	/* write the param regs */
	    __u8 pad10;
	    __u8 wphase;	/* write the phase states & dirs */
	    __u8 pad11;
	    __u8 wsetup;	/* write the setup register */
	    __u8 pad12;
	    __u8 wzeroes;	/* mode reg: 1's clr bits, 0's are x */
	    __u8 pad13;
	    __u8 wones;		/* mode reg: 1's set bits, 0's are x */
	    __u8 pad14;
	    __u8 rdata;		/* read a data byte */
	    __u8 pad15;
	    __u8 rmark;		/* read a mark byte */
	    __u8 pad16;
	    __u8 rerror;	/* read the error register */
	    __u8 pad17;
	    __u8 rparams;	/* read the param regs */
	    __u8 pad18;
	    __u8 rphase;	/* read the phase states & dirs */
	    __u8 pad19;
	    __u8 rsetup;	/* read the setup register */
	    __u8 pad20;
	    __u8 rmode;		/* read the mode register */
	    __u8 pad21;
	    __u8 rhandshake;	/* read the handshake register */
	} ism_regs;
    } b;
};

/* This structure is used to track IOP messages in the Linux kernel */

struct iop_msg {
	struct iop_msg	*next;		/* next message in queue or NULL     */
	uint	iop_num;		/* IOP number                        */
	uint	channel;		/* channel number                    */
	void	*caller_priv;		/* caller private data               */
	int	status;			/* status of this message            */
	__u8	message[IOP_MSG_LEN];	/* the message being sent/received   */
	__u8	reply[IOP_MSG_LEN];	/* the reply to the message          */
	void	(*handler)(struct iop_msg *);
					/* function to call when reply recvd */
};

extern int iop_scc_present,iop_ism_present;

extern int iop_listen(uint, uint,
			void (*handler)(struct iop_msg *),
			const char *);
extern int iop_send_message(uint, uint, void *, uint, __u8 *,
			    void (*)(struct iop_msg *));
extern void iop_complete_message(struct iop_msg *);
extern void iop_upload_code(uint, __u8 *, uint, __u16);
extern void iop_download_code(uint, __u8 *, uint, __u16);
extern __u8 *iop_compare_code(uint, __u8 *, uint, __u16);
extern void iop_ism_irq_poll(uint);

extern void iop_register_interrupts(void);

#endif /* __ASSEMBLY__ */

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Name Type Size Permission Actions
Kbuild File 599 B 0644
MC68328.h File 37.82 KB 0644
MC68EZ328.h File 37.74 KB 0644
MC68VZ328.h File 41.02 KB 0644
a.out-core.h File 1.98 KB 0644
adb_iop.h File 1.09 KB 0644
amigahw.h File 10.49 KB 0644
amigaints.h File 3.5 KB 0644
amigayle.h File 3.19 KB 0644
amipcmcia.h File 2.51 KB 0644
apollohw.h File 2.35 KB 0644
asm-offsets.h File 35 B 0644
asm-prototypes.h File 211 B 0644
atafd.h File 300 B 0644
atafdreg.h File 2.68 KB 0644
atari_joystick.h File 457 B 0644
atari_stdma.h File 514 B 0644
atari_stram.h File 528 B 0644
atarihw.h File 20.3 KB 0644
atariints.h File 5.56 KB 0644
atarikb.h File 1.4 KB 0644
atomic.h File 4.86 KB 0644
bitops.h File 12.19 KB 0644
blinken.h File 641 B 0644
bootinfo.h File 783 B 0644
bootstd.h File 4.64 KB 0644
bug.h File 659 B 0644
bugs.h File 369 B 0644
bvme6000hw.h File 3.45 KB 0644
cache.h File 296 B 0644
cacheflush.h File 133 B 0644
cacheflush_mm.h File 6.92 KB 0644
cacheflush_no.h File 2.61 KB 0644
checksum.h File 3.4 KB 0644
cmpxchg.h File 3.34 KB 0644
coldfire.h File 1.61 KB 0644
contregs.h File 3.31 KB 0644
current.h File 580 B 0644
delay.h File 3.43 KB 0644
div64.h File 858 B 0644
dma-mapping.h File 291 B 0644
dma.h File 16.65 KB 0644
dsp56k.h File 1.24 KB 0644
dvma.h File 9.67 KB 0644
elf.h File 3.07 KB 0644
entry.h File 5.76 KB 0644
export.h File 74 B 0644
fb.h File 921 B 0644
fbio.h File 9.87 KB 0644
flat.h File 1.02 KB 0644
floppy.h File 5.06 KB 0644
fpu.h File 535 B 0644
ftrace.h File 12 B 0644
gpio.h File 2.64 KB 0644
hardirq.h File 594 B 0644
hash.h File 2.07 KB 0644
hp300hw.h File 186 B 0644
hwtest.h File 467 B 0644
ide.h File 1.67 KB 0644
idprom.h File 725 B 0644
intersil.h File 1.11 KB 0644
io.h File 383 B 0644
io_mm.h File 16.19 KB 0644
io_no.h File 5.26 KB 0644
irq.h File 2.57 KB 0644
irqflags.h File 1.61 KB 0644
kexec.h File 732 B 0644
linkage.h File 1.55 KB 0644
m5206sim.h File 6.4 KB 0644
m520xsim.h File 7.15 KB 0644
m523xsim.h File 7.7 KB 0644
m525xsim.h File 10.57 KB 0644
m5272sim.h File 6.05 KB 0644
m527xsim.h File 13.51 KB 0644
m528xsim.h File 9.37 KB 0644
m52xxacr.h File 3.57 KB 0644
m5307sim.h File 7.52 KB 0644
m53xxacr.h File 3.6 KB 0644
m53xxsim.h File 53.97 KB 0644
m5407sim.h File 6.14 KB 0644
m5441xsim.h File 8.5 KB 0644
m54xxacr.h File 4.82 KB 0644
m54xxgpt.h File 3.66 KB 0644
m54xxpci.h File 6.13 KB 0644
m54xxsim.h File 3.8 KB 0644
mac_asc.h File 520 B 0644
mac_baboon.h File 999 B 0644
mac_iop.h File 5.37 KB 0644
mac_oss.h File 1.83 KB 0644
mac_psc.h File 7.25 KB 0644
mac_via.h File 11.44 KB 0644
machdep.h File 1.34 KB 0644
machines.h File 3.13 KB 0644
machw.h File 588 B 0644
macintosh.h File 2.02 KB 0644
macints.h File 3.28 KB 0644
math-emu.h File 6.74 KB 0644
mc146818rtc.h File 598 B 0644
mcf8390.h File 3.75 KB 0644
mcf_pgalloc.h File 2.37 KB 0644
mcf_pgtable.h File 9.89 KB 0644
mcfclk.h File 1.01 KB 0644
mcfdma.h File 6.51 KB 0644
mcfgpio.h File 8.48 KB 0644
mcfintc.h File 3.09 KB 0644
mcfmmu.h File 3.67 KB 0644
mcfpit.h File 2.22 KB 0644
mcfqspi.h File 1.82 KB 0644
mcfsim.h File 1.5 KB 0644
mcfslt.h File 1.21 KB 0644
mcftimer.h File 2.3 KB 0644
mcfuart.h File 6.91 KB 0644
mcfwdebug.h File 4.99 KB 0644
mmu.h File 243 B 0644
mmu_context.h File 7.2 KB 0644
mmzone.h File 264 B 0644
module.h File 847 B 0644
motorola_pgalloc.h File 2.26 KB 0644
motorola_pgtable.h File 9.2 KB 0644
movs.h File 1.44 KB 0644
mvme147hw.h File 2.81 KB 0644
mvme16xhw.h File 2.16 KB 0644
natfeat.h File 533 B 0644
nettel.h File 2.95 KB 0644
nubus.h File 1.21 KB 0644
openprom.h File 7.98 KB 0644
oplib.h File 9.54 KB 0644
page.h File 1.47 KB 0644
page_mm.h File 4.06 KB 0644
page_no.h File 1.28 KB 0644
page_offset.h File 256 B 0644
parport.h File 837 B 0644
pci.h File 458 B 0644
pgalloc.h File 444 B 0644
pgtable.h File 127 B 0644
pgtable_mm.h File 4.84 KB 0644
pgtable_no.h File 1.57 KB 0644
processor.h File 3.59 KB 0644
ptrace.h File 643 B 0644
q40_master.h File 2.28 KB 0644
q40ints.h File 749 B 0644
quicc_simple.h File 1.79 KB 0644
raw_io.h File 11.41 KB 0644
segment.h File 1.42 KB 0644
serial.h File 1.14 KB 0644
setup.h File 9.25 KB 0644
signal.h File 1.34 KB 0644
smp.h File 32 B 0644
string.h File 1.68 KB 0644
sun3-head.h File 353 B 0644
sun3_pgalloc.h File 2.26 KB 0644
sun3_pgtable.h File 7.65 KB 0644
sun3ints.h File 989 B 0644
sun3mmu.h File 4.91 KB 0644
sun3x.h File 868 B 0644
sun3xflop.h File 5.62 KB 0644
sun3xprom.h File 1.31 KB 0644
switch_to.h File 1.51 KB 0644
thread_info.h File 2.02 KB 0644
timex.h File 974 B 0644
tlb.h File 486 B 0644
tlbflush.h File 5.95 KB 0644
traps.h File 8.33 KB 0644
uaccess.h File 152 B 0644
uaccess_mm.h File 10.31 KB 0644
uaccess_no.h File 3.69 KB 0644
ucontext.h File 570 B 0644
unaligned.h File 600 B 0644
unistd.h File 952 B 0644
user.h File 3.78 KB 0644
vga.h File 651 B 0644
virtconvert.h File 947 B 0644
zorro.h File 1.17 KB 0644