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Diffstat (limited to 'include/asm-x86/floppy.h')
-rw-r--r--include/asm-x86/floppy.h93
1 files changed, 48 insertions, 45 deletions
diff --git a/include/asm-x86/floppy.h b/include/asm-x86/floppy.h
index a48d7153c097..dbe82a5c5eac 100644
--- a/include/asm-x86/floppy.h
+++ b/include/asm-x86/floppy.h
@@ -20,20 +20,21 @@
* driver otherwise. It doesn't matter much for performance anyway, as most
* floppy accesses go through the track buffer.
*/
-#define _CROSS_64KB(a,s,vdma) \
-(!(vdma) && ((unsigned long)(a)/K_64 != ((unsigned long)(a) + (s) - 1) / K_64))
+#define _CROSS_64KB(a, s, vdma) \
+ (!(vdma) && \
+ ((unsigned long)(a)/K_64 != ((unsigned long)(a) + (s) - 1) / K_64))
-#define CROSS_64KB(a,s) _CROSS_64KB(a,s,use_virtual_dma & 1)
+#define CROSS_64KB(a, s) _CROSS_64KB(a, s, use_virtual_dma & 1)
-#define SW fd_routine[use_virtual_dma&1]
+#define SW fd_routine[use_virtual_dma & 1]
#define CSW fd_routine[can_use_virtual_dma & 1]
#define fd_inb(port) inb_p(port)
-#define fd_outb(value,port) outb_p(value,port)
+#define fd_outb(value, port) outb_p(value, port)
-#define fd_request_dma() CSW._request_dma(FLOPPY_DMA,"floppy")
+#define fd_request_dma() CSW._request_dma(FLOPPY_DMA, "floppy")
#define fd_free_dma() CSW._free_dma(FLOPPY_DMA)
#define fd_enable_irq() enable_irq(FLOPPY_IRQ)
#define fd_disable_irq() disable_irq(FLOPPY_IRQ)
@@ -52,64 +53,64 @@ static int doing_pdma;
static irqreturn_t floppy_hardint(int irq, void *dev_id)
{
- register unsigned char st;
+ unsigned char st;
#undef TRACE_FLPY_INT
#ifdef TRACE_FLPY_INT
- static int calls=0;
- static int bytes=0;
- static int dma_wait=0;
+ static int calls;
+ static int bytes;
+ static int dma_wait;
#endif
if (!doing_pdma)
return floppy_interrupt(irq, dev_id);
#ifdef TRACE_FLPY_INT
- if(!calls)
+ if (!calls)
bytes = virtual_dma_count;
#endif
{
- register int lcount;
- register char *lptr;
+ int lcount;
+ char *lptr;
st = 1;
- for(lcount=virtual_dma_count, lptr=virtual_dma_addr;
- lcount; lcount--, lptr++) {
- st=inb(virtual_dma_port+4) & 0xa0 ;
- if(st != 0xa0)
+ 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);
+ if (virtual_dma_mode)
+ outb_p(*lptr, virtual_dma_port + 5);
else
- *lptr = inb_p(virtual_dma_port+5);
+ *lptr = inb_p(virtual_dma_port + 5);
}
virtual_dma_count = lcount;
virtual_dma_addr = lptr;
- st = inb(virtual_dma_port+4);
+ st = inb(virtual_dma_port + 4);
}
#ifdef TRACE_FLPY_INT
calls++;
#endif
- if(st == 0x20)
+ if (st == 0x20)
return IRQ_HANDLED;
- if(!(st & 0x20)) {
+ if (!(st & 0x20)) {
virtual_dma_residue += virtual_dma_count;
- virtual_dma_count=0;
+ virtual_dma_count = 0;
#ifdef TRACE_FLPY_INT
printk("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;
+ dma_wait = 0;
#endif
doing_pdma = 0;
floppy_interrupt(irq, dev_id);
return IRQ_HANDLED;
}
#ifdef TRACE_FLPY_INT
- if(!virtual_dma_count)
+ if (!virtual_dma_count)
dma_wait++;
#endif
return IRQ_HANDLED;
@@ -117,14 +118,14 @@ static irqreturn_t floppy_hardint(int irq, void *dev_id)
static void fd_disable_dma(void)
{
- if(! (can_use_virtual_dma & 1))
+ if (!(can_use_virtual_dma & 1))
disable_dma(FLOPPY_DMA);
doing_pdma = 0;
virtual_dma_residue += virtual_dma_count;
- virtual_dma_count=0;
+ virtual_dma_count = 0;
}
-static int vdma_request_dma(unsigned int dmanr, const char * device_id)
+static int vdma_request_dma(unsigned int dmanr, const char *device_id)
{
return 0;
}
@@ -142,7 +143,7 @@ static int vdma_get_dma_residue(unsigned int dummy)
static int fd_request_irq(void)
{
- if(can_use_virtual_dma)
+ if (can_use_virtual_dma)
return request_irq(FLOPPY_IRQ, floppy_hardint,
IRQF_DISABLED, "floppy", NULL);
else
@@ -152,13 +153,13 @@ static int fd_request_irq(void)
static unsigned long dma_mem_alloc(unsigned long size)
{
- return __get_dma_pages(GFP_KERNEL|__GFP_NORETRY,get_order(size));
+ return __get_dma_pages(GFP_KERNEL|__GFP_NORETRY, get_order(size));
}
static unsigned long vdma_mem_alloc(unsigned long size)
{
- return (unsigned long) vmalloc(size);
+ return (unsigned long)vmalloc(size);
}
@@ -166,7 +167,7 @@ static unsigned long vdma_mem_alloc(unsigned long size)
static void _fd_dma_mem_free(unsigned long addr, unsigned long size)
{
- if((unsigned long) addr >= (unsigned long) high_memory)
+ if ((unsigned long)addr >= (unsigned long)high_memory)
vfree((void *)addr);
else
free_pages(addr, get_order(size));
@@ -176,10 +177,10 @@ static void _fd_dma_mem_free(unsigned long addr, unsigned long size)
static void _fd_chose_dma_mode(char *addr, unsigned long size)
{
- if(can_use_virtual_dma == 2) {
- if((unsigned long) addr >= (unsigned long) high_memory ||
- isa_virt_to_bus(addr) >= 0x1000000 ||
- _CROSS_64KB(addr, size, 0))
+ if (can_use_virtual_dma == 2) {
+ if ((unsigned long)addr >= (unsigned long)high_memory ||
+ isa_virt_to_bus(addr) >= 0x1000000 ||
+ _CROSS_64KB(addr, size, 0))
use_virtual_dma = 1;
else
use_virtual_dma = 0;
@@ -195,7 +196,7 @@ static int vdma_dma_setup(char *addr, unsigned long size, int mode, int io)
{
doing_pdma = 1;
virtual_dma_port = io;
- virtual_dma_mode = (mode == DMA_MODE_WRITE);
+ virtual_dma_mode = (mode == DMA_MODE_WRITE);
virtual_dma_addr = addr;
virtual_dma_count = size;
virtual_dma_residue = 0;
@@ -213,18 +214,18 @@ static int hard_dma_setup(char *addr, unsigned long size, int mode, int io)
/* actual, physical DMA */
doing_pdma = 0;
clear_dma_ff(FLOPPY_DMA);
- set_dma_mode(FLOPPY_DMA,mode);
- set_dma_addr(FLOPPY_DMA,isa_virt_to_bus(addr));
- set_dma_count(FLOPPY_DMA,size);
+ set_dma_mode(FLOPPY_DMA, mode);
+ set_dma_addr(FLOPPY_DMA, isa_virt_to_bus(addr));
+ set_dma_count(FLOPPY_DMA, size);
enable_dma(FLOPPY_DMA);
return 0;
}
static struct fd_routine_l {
- int (*_request_dma)(unsigned int dmanr, const char * device_id);
+ int (*_request_dma)(unsigned int dmanr, const char *device_id);
void (*_free_dma)(unsigned int dmanr);
int (*_get_dma_residue)(unsigned int dummy);
- unsigned long (*_dma_mem_alloc) (unsigned long size);
+ unsigned long (*_dma_mem_alloc)(unsigned long size);
int (*_dma_setup)(char *addr, unsigned long size, int mode, int io);
} fd_routine[] = {
{
@@ -252,7 +253,8 @@ static int FDC2 = -1;
* is needed to prevent corrupted CMOS RAM in case "insmod floppy"
* coincides with another rtc CMOS user. Paul G.
*/
-#define FLOPPY0_TYPE ({ \
+#define FLOPPY0_TYPE \
+({ \
unsigned long flags; \
unsigned char val; \
spin_lock_irqsave(&rtc_lock, flags); \
@@ -261,7 +263,8 @@ static int FDC2 = -1;
val; \
})
-#define FLOPPY1_TYPE ({ \
+#define FLOPPY1_TYPE \
+({ \
unsigned long flags; \
unsigned char val; \
spin_lock_irqsave(&rtc_lock, flags); \
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.