FM / asm

/usr/src/linux-headers-5.15.0-181/arch/m68k/include/asm/

/usr/src/linux-headers-5.15.0-181/arch/m68k/include/asm

Name	Size	Mode	Actions
adb_iop.h	1188	0644	edit dl rm
amigahw.h	10737	0644	edit dl rm
amigaints.h	3583	0644	edit dl rm
amigayle.h	3271	0644	edit dl rm
amipcmcia.h	2568	0644	edit dl rm
apollohw.h	2410	0644	edit dl rm
asm-offsets.h	35	0644	edit dl rm
asm-prototypes.h	211	0644	edit dl rm
atarihw.h	20919	0644	edit dl rm
atariints.h	5691	0644	edit dl rm
atarikb.h	1434	0644	edit dl rm
atari_joystick.h	457	0644	edit dl rm
atari_stdma.h	514	0644	edit dl rm
atari_stram.h	528	0644	edit dl rm
atomic.h	5016	0644	edit dl rm
bitops.h	12827	0644	edit dl rm
blinken.h	641	0644	edit dl rm
bootinfo.h	783	0644	edit dl rm
bootstd.h	4747	0644	edit dl rm
bug.h	659	0644	edit dl rm
bvme6000hw.h	3529	0644	edit dl rm
cache.h	296	0644	edit dl rm
cacheflush.h	133	0644	edit dl rm
cacheflush_mm.h	7173	0644	edit dl rm
cacheflush_no.h	1884	0644	edit dl rm
checksum.h	3497	0644	edit dl rm
cmpxchg.h	3189	0644	edit dl rm
coldfire.h	1653	0644	edit dl rm
contregs.h	3390	0644	edit dl rm
current.h	580	0644	edit dl rm
delay.h	3504	0644	edit dl rm
div64.h	858	0644	edit dl rm
dma.h	17040	0644	edit dl rm
dsp56k.h	1269	0644	edit dl rm
dvma.h	9903	0644	edit dl rm
elf.h	3145	0644	edit dl rm
entry.h	5902	0644	edit dl rm
export.h	53	0644	edit dl rm
fb.h	921	0644	edit dl rm
fbio.h	10106	0644	edit dl rm
flat.h	333	0644	edit dl rm
floppy.h	5330	0644	edit dl rm
fpu.h	535	0644	edit dl rm
ftrace.h	12	0644	edit dl rm
gpio.h	2294	0644	edit dl rm
hash.h	2115	0644	edit dl rm
hp300hw.h	186	0644	edit dl rm
hwtest.h	467	0644	edit dl rm
ide.h	1708	0644	edit dl rm
idprom.h	725	0644	edit dl rm
intersil.h	1134	0644	edit dl rm
io.h	244	0644	edit dl rm
io_mm.h	13198	0644	edit dl rm
io_no.h	4196	0644	edit dl rm
irq.h	2634	0644	edit dl rm
irqflags.h	1652	0644	edit dl rm
Kbuild	165	0644	edit dl rm
kexec.h	732	0644	edit dl rm
kmap.h	1754	0644	edit dl rm
linkage.h	1583	0644	edit dl rm
m52xxacr.h	3660	0644	edit dl rm
m53xxacr.h	3683	0644	edit dl rm
m53xxsim.h	55262	0644	edit dl rm
m54xxacr.h	4934	0644	edit dl rm
m54xxgpt.h	3750	0644	edit dl rm
m54xxpci.h	6276	0644	edit dl rm
m54xxsim.h	3892	0644	edit dl rm
m520xsim.h	7323	0644	edit dl rm
m523xsim.h	7882	0644	edit dl rm
m525xsim.h	10822	0644	edit dl rm
m527xsim.h	13835	0644	edit dl rm
m528xsim.h	9599	0644	edit dl rm
m5206sim.h	6555	0644	edit dl rm
m5272sim.h	6199	0644	edit dl rm
m5307sim.h	7698	0644	edit dl rm
m5407sim.h	6289	0644	edit dl rm
m5441xsim.h	10294	0644	edit dl rm
machdep.h	1331	0644	edit dl rm
machines.h	3209	0644	edit dl rm
machw.h	588	0644	edit dl rm
macintosh.h	2438	0644	edit dl rm
macints.h	3210	0644	edit dl rm
mac_asc.h	520	0644	edit dl rm
mac_baboon.h	999	0644	edit dl rm
mac_iop.h	5499	0644	edit dl rm
mac_oss.h	1873	0644	edit dl rm
mac_psc.h	7427	0644	edit dl rm
mac_via.h	11718	0644	edit dl rm
math-emu.h	6897	0644	edit dl rm
MC68EZ328.h	38650	0644	edit dl rm
MC68VZ328.h	42006	0644	edit dl rm
MC68328.h	38724	0644	edit dl rm
mc146818rtc.h	598	0644	edit dl rm
mcf8390.h	3844	0644	edit dl rm
mcfclk.h	961	0644	edit dl rm
mcfdma.h	6662	0644	edit dl rm
mcfgpio.h	8269	0644	edit dl rm
mcfintc.h	3161	0644	edit dl rm
mcfmmu.h	3761	0644	edit dl rm
mcfpit.h	2278	0644	edit dl rm
mcfqspi.h	1466	0644	edit dl rm
mcfsim.h	1531	0644	edit dl rm
mcfslt.h	1240	0644	edit dl rm
mcftimer.h	2357	0644	edit dl rm
mcfuart.h	7076	0644	edit dl rm
mcfwdebug.h	5106	0644	edit dl rm
mcf_pgalloc.h	2000	0644	edit dl rm
mcf_pgtable.h	8312	0644	edit dl rm
mmu.h	243	0644	edit dl rm
mmu_context.h	7207	0644	edit dl rm
module.h	847	0644	edit dl rm
module.lds.h	91	0644	edit dl rm
motorola_pgalloc.h	2146	0644	edit dl rm
motorola_pgtable.h	7610	0644	edit dl rm
movs.h	1472	0644	edit dl rm
mvme16xhw.h	2216	0644	edit dl rm
mvme147hw.h	2938	0644	edit dl rm
natfeat.h	533	0644	edit dl rm
nettel.h	3023	0644	edit dl rm
nubus.h	1262	0644	edit dl rm
openprom.h	8173	0644	edit dl rm
oplib.h	9768	0644	edit dl rm
page.h	1728	0644	edit dl rm
page_mm.h	3399	0644	edit dl rm
page_no.h	1322	0644	edit dl rm
page_offset.h	256	0644	edit dl rm
parport.h	837	0644	edit dl rm
pci.h	258	0644	edit dl rm
pgalloc.h	444	0644	edit dl rm
pgtable.h	127	0644	edit dl rm
pgtable_mm.h	4931	0644	edit dl rm
pgtable_no.h	1438	0644	edit dl rm
processor.h	4158	0644	edit dl rm
ptrace.h	643	0644	edit dl rm
q40ints.h	749	0644	edit dl rm
q40_master.h	2357	0644	edit dl rm
quicc_simple.h	1830	0644	edit dl rm
raw_io.h	12003	0644	edit dl rm
serial.h	1165	0644	edit dl rm
setup.h	9467	0644	edit dl rm
signal.h	1377	0644	edit dl rm
smp.h	32	0644	edit dl rm
string.h	1717	0644	edit dl rm
sun3-head.h	353	0644	edit dl rm
sun3ints.h	989	0644	edit dl rm
sun3mmu.h	5025	0644	edit dl rm
sun3x.h	868	0644	edit dl rm
sun3xflop.h	5757	0644	edit dl rm
sun3xprom.h	1343	0644	edit dl rm
sun3_pgalloc.h	1267	0644	edit dl rm
sun3_pgtable.h	6583	0644	edit dl rm
switch_to.h	1549	0644	edit dl rm
syscall.h	251	0644	edit dl rm
thread_info.h	2237	0644	edit dl rm
timex.h	974	0644	edit dl rm
tlb.h	135	0644	edit dl rm
tlbflush.h	5989	0644	edit dl rm
traps.h	8615	0644	edit dl rm
uaccess.h	12563	0644	edit dl rm
ucontext.h	570	0644	edit dl rm
unistd.h	993	0644	edit dl rm
user.h	3874	0644	edit dl rm
vga.h	902	0644	edit dl rm
virtconvert.h	834	0644	edit dl rm
vmalloc.h	90	0644	edit dl rm
zorro.h	1222	0644	edit dl rm

Edit: /usr/src/linux-headers-5.15.0-181/arch/m68k/include/asm/floppy.h (5330B)

/*
 * Implementation independent bits of the Floppy driver.
 *
 * much of this file is derived from what was originally the Q40 floppy driver.
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 1999, 2000, 2001
 *
 * Sun3x support added 2/4/2000 Sam Creasey (sammy@sammy.net)
 *
 */

#include <asm/io.h>

#include <linux/vmalloc.h>

asmlinkage irqreturn_t floppy_hardint(int irq, void *dev_id);

/* constants... */

#undef MAX_DMA_ADDRESS
#define MAX_DMA_ADDRESS   0x00  /* nothing like that */

/*
 * Again, the CMOS information doesn't work on m68k..
 */
#define FLOPPY0_TYPE (MACH_IS_Q40 ? 6 : 4)
#define FLOPPY1_TYPE 0

/* basically PC init + set use_virtual_dma */
#define  FDC1 m68k_floppy_init()

#define N_FDC 1
#define N_DRIVE 8

/* vdma globals adapted from asm-i386/floppy.h */

static int virtual_dma_count=0;
static int virtual_dma_residue=0;
static char *virtual_dma_addr=NULL;
static int virtual_dma_mode=0;
static int doing_pdma=0;

#include <asm/sun3xflop.h>

extern spinlock_t  dma_spin_lock;

static __inline__ unsigned long claim_dma_lock(void)
{
	unsigned long flags;
	spin_lock_irqsave(&dma_spin_lock, flags);
	return flags;
}

static __inline__ void release_dma_lock(unsigned long flags)
{
	spin_unlock_irqrestore(&dma_spin_lock, flags);
}

static __inline__ unsigned char fd_inb(int base, int reg)
{
	if(MACH_IS_Q40)
		return inb_p(base + reg);
	else if(MACH_IS_SUN3X)
		return sun3x_82072_fd_inb(base + reg);
	return 0;
}

static __inline__ void fd_outb(unsigned char value, int base, int reg)
{
	if(MACH_IS_Q40)
		outb_p(value, base + reg);
	else if(MACH_IS_SUN3X)
		sun3x_82072_fd_outb(value, base + reg);
}

static int fd_request_irq(void)
{
	if(MACH_IS_Q40)
		return request_irq(FLOPPY_IRQ, floppy_hardint,
				   0, "floppy", floppy_hardint);
	else if(MACH_IS_SUN3X)
		return sun3xflop_request_irq();
	return -ENXIO;
}

static void fd_free_irq(void)
{
	if(MACH_IS_Q40)
		free_irq(FLOPPY_IRQ, floppy_hardint);
}

#define fd_request_dma()        vdma_request_dma(FLOPPY_DMA,"floppy")
#define fd_get_dma_residue()    vdma_get_dma_residue(FLOPPY_DMA)
#define fd_dma_mem_alloc(size)	vdma_mem_alloc(size)
#define fd_dma_setup(addr, size, mode, io) vdma_dma_setup(addr, size, mode, io)

#define fd_enable_irq()           /* nothing... */
#define fd_disable_irq()          /* nothing... */

#define fd_free_dma()             /* nothing */

/* No 64k boundary crossing problems on Q40 - no DMA at all */
#define CROSS_64KB(a,s) (0)

#define DMA_MODE_READ  0x44    /* i386 look-alike */
#define DMA_MODE_WRITE 0x48

static int m68k_floppy_init(void)
{
  use_virtual_dma =1;
  can_use_virtual_dma = 1;

if (MACH_IS_Q40)
	  return 0x3f0;
  else if(MACH_IS_SUN3X)
	  return sun3xflop_init();
  else
    return -1;
}

static int vdma_request_dma(unsigned int dmanr, const char * device_id)
{
	return 0;
}

static int vdma_get_dma_residue(unsigned int dummy)
{
	return virtual_dma_count + virtual_dma_residue;
}

static unsigned long vdma_mem_alloc(unsigned long size)
{
	return (unsigned long) vmalloc(size);

}

static void _fd_dma_mem_free(unsigned long addr, unsigned long size)
{
        vfree((void *)addr);
}
#define fd_dma_mem_free(addr,size) _fd_dma_mem_free(addr, size)

/* choose_dma_mode ???*/

static int vdma_dma_setup(char *addr, unsigned long size, int mode, int io)
{
	doing_pdma = 1;
	virtual_dma_port = (MACH_IS_Q40 ? io : 0);
	virtual_dma_mode = (mode  == DMA_MODE_WRITE);
	virtual_dma_addr = addr;
	virtual_dma_count = size;
	virtual_dma_residue = 0;
	return 0;
}

static void fd_disable_dma(void)
{
	doing_pdma = 0;
	virtual_dma_residue += virtual_dma_count;
	virtual_dma_count=0;
}

/* this is the only truly Q40 specific function */

asmlinkage irqreturn_t floppy_hardint(int irq, void *dev_id)
{
	register unsigned char st;

#undef TRACE_FLPY_INT
#define NO_FLOPPY_ASSEMBLER

#ifdef TRACE_FLPY_INT
	static int calls=0;
	static int bytes=0;
	static int dma_wait=0;
#endif
	if(!doing_pdma) {
		floppy_interrupt(irq, dev_id);
		return IRQ_HANDLED;
	}

#ifdef TRACE_FLPY_INT
	if(!calls)
		bytes = virtual_dma_count;
#endif

{
		register int lcount;
		register char *lptr;

/* serve 1st byte fast: */

st=1;
		for(lcount=virtual_dma_count, lptr=virtual_dma_addr;
		    lcount; lcount--, lptr++) {
			st = inb(virtual_dma_port + FD_STATUS);
			st &= STATUS_DMA | STATUS_READY;
			if (st != (STATUS_DMA | STATUS_READY))
				break;
			if(virtual_dma_mode)
				outb_p(*lptr, virtual_dma_port + FD_DATA);
			else
				*lptr = inb_p(virtual_dma_port + FD_DATA);
		}

virtual_dma_count = lcount;
		virtual_dma_addr = lptr;
		st = inb(virtual_dma_port + FD_STATUS);
	}

#ifdef TRACE_FLPY_INT
	calls++;
#endif
	if (st == STATUS_DMA)
		return IRQ_HANDLED;
	if (!(st & STATUS_DMA)) {
		virtual_dma_residue += virtual_dma_count;
		virtual_dma_count=0;
#ifdef TRACE_FLPY_INT
		pr_info("count=%x, residue=%x calls=%d bytes=%d dma_wait=%d\n",
			virtual_dma_count, virtual_dma_residue, calls, bytes,
			dma_wait);
		calls = 0;
		dma_wait=0;
#endif
		doing_pdma = 0;
		floppy_interrupt(irq, dev_id);
		return IRQ_HANDLED;
	}
#ifdef TRACE_FLPY_INT
	if(!virtual_dma_count)
		dma_wait++;
#endif
	return IRQ_HANDLED;
}

#define EXTRA_FLOPPY_PARAMS

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