Release 4.14 arch/m68k/include/asm/floppy.h
/*
* 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;
}
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static __inline__ void release_dma_lock(unsigned long flags)
{
spin_unlock_irqrestore(&dma_spin_lock, flags);
}
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static __inline__ unsigned char fd_inb(int port)
{
if(MACH_IS_Q40)
return inb_p(port);
else if(MACH_IS_SUN3X)
return sun3x_82072_fd_inb(port);
return 0;
}
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| Linus Torvalds (pre-git) | 4 | 11.43% | 1 | 33.33% |
| Geert Uytterhoeven | 3 | 8.57% | 1 | 33.33% |
| Total | 35 | 100.00% | 3 | 100.00% |
static __inline__ void fd_outb(unsigned char value, int port)
{
if(MACH_IS_Q40)
outb_p(value, port);
else if(MACH_IS_SUN3X)
sun3x_82072_fd_outb(value, port);
}
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| Linus Torvalds | 33 | 89.19% | 1 | 50.00% |
| Linus Torvalds (pre-git) | 4 | 10.81% | 1 | 50.00% |
| Total | 37 | 100.00% | 2 | 100.00% |
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;
}
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| Linus Torvalds | 33 | 84.62% | 2 | 40.00% |
| Geert Uytterhoeven | 4 | 10.26% | 1 | 20.00% |
| Linus Torvalds (pre-git) | 1 | 2.56% | 1 | 20.00% |
| Michael Opdenacker | 1 | 2.56% | 1 | 20.00% |
| Total | 39 | 100.00% | 5 | 100.00% |
static void fd_free_irq(void)
{
if(MACH_IS_Q40)
free_irq(FLOPPY_IRQ, floppy_hardint);
}
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| Linus Torvalds | 19 | 100.00% | 2 | 100.00% |
| Total | 19 | 100.00% | 2 | 100.00% |
#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;
}
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| Linus Torvalds (pre-git) | 23 | 62.16% | 1 | 50.00% |
| Linus Torvalds | 14 | 37.84% | 1 | 50.00% |
| Total | 37 | 100.00% | 2 | 100.00% |
static int vdma_request_dma(unsigned int dmanr, const char * device_id)
{
return 0;
}
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| Linus Torvalds | 18 | 100.00% | 1 | 100.00% |
| Total | 18 | 100.00% | 1 | 100.00% |
static int vdma_get_dma_residue(unsigned int dummy)
{
return virtual_dma_count + virtual_dma_residue;
}
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| Linus Torvalds | 13 | 86.67% | 1 | 50.00% |
| Linus Torvalds (pre-git) | 2 | 13.33% | 1 | 50.00% |
| Total | 15 | 100.00% | 2 | 100.00% |
static unsigned long vdma_mem_alloc(unsigned long size)
{
return (unsigned long) vmalloc(size);
}
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| Linus Torvalds | 21 | 100.00% | 1 | 100.00% |
| Total | 21 | 100.00% | 1 | 100.00% |
static void _fd_dma_mem_free(unsigned long addr, unsigned long size)
{
vfree((void *)addr);
}
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| Total | 23 | 100.00% | 1 | 100.00% |
#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;
}
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| Linus Torvalds | 49 | 85.96% | 1 | 50.00% |
| Linus Torvalds (pre-git) | 8 | 14.04% | 1 | 50.00% |
| Total | 57 | 100.00% | 2 | 100.00% |
static void fd_disable_dma(void)
{
doing_pdma = 0;
virtual_dma_residue += virtual_dma_count;
virtual_dma_count=0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds | 14 | 70.00% | 1 | 50.00% |
| Linus Torvalds (pre-git) | 6 | 30.00% | 1 | 50.00% |
| Total | 20 | 100.00% | 2 | 100.00% |
/* 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+4) & 0xa0 ;
if(st != 0xa0)
break;
if(virtual_dma_mode)
outb_p(*lptr, virtual_dma_port+5);
else
*lptr = inb_p(virtual_dma_port+5);
}
virtual_dma_count = lcount;
virtual_dma_addr = lptr;
st = inb(virtual_dma_port+4);
}
#ifdef TRACE_FLPY_INT
calls++;
#endif
if(st == 0x20)
return IRQ_HANDLED;
if(!(st & 0x20)) {
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 254 | 94.78% | 1 | 33.33% |
| Geert Uytterhoeven | 14 | 5.22% | 2 | 66.67% |
| Total | 268 | 100.00% | 3 | 100.00% |
#define EXTRA_FLOPPY_PARAMS
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| Person | Tokens | Prop | Commits | CommitProp |
| Linus Torvalds (pre-git) | 441 | 55.12% | 2 | 20.00% |
| Linus Torvalds | 334 | 41.75% | 2 | 20.00% |
| Geert Uytterhoeven | 23 | 2.88% | 4 | 40.00% |
| Michael Opdenacker | 1 | 0.12% | 1 | 10.00% |
| Al Viro | 1 | 0.12% | 1 | 10.00% |
| Total | 800 | 100.00% | 10 | 100.00% |
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