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[SPARC64]: Allow floppy driver to build modular.

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Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2006-06-25 01:32:25 -07:00
parent 698539187a
commit 3505599615
2 changed files with 49 additions and 62 deletions
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61
arch/sparc64/kernel/irq.c
View file

@ -563,67 +563,6 @@ void handler_irq(int irq, struct pt_regs *regs)
irq_exit();
}
#ifdef CONFIG_BLK_DEV_FD
extern irqreturn_t floppy_interrupt(int, void *, struct pt_regs *);
/* XXX No easy way to include asm/floppy.h XXX */
extern unsigned char *pdma_vaddr;
extern unsigned long pdma_size;
extern volatile int doing_pdma;
extern unsigned long fdc_status;
irqreturn_t sparc_floppy_irq(int irq, void *dev_cookie, struct pt_regs *regs)
{
if (likely(doing_pdma)) {
void __iomem *stat = (void __iomem *) fdc_status;
unsigned char *vaddr = pdma_vaddr;
unsigned long size = pdma_size;
u8 val;
while (size) {
val = readb(stat);
if (unlikely(!(val & 0x80))) {
pdma_vaddr = vaddr;
pdma_size = size;
return IRQ_HANDLED;
}
if (unlikely(!(val & 0x20))) {
pdma_vaddr = vaddr;
pdma_size = size;
doing_pdma = 0;
goto main_interrupt;
}
if (val & 0x40) {
/* read */
*vaddr++ = readb(stat + 1);
} else {
unsigned char data = *vaddr++;
/* write */
writeb(data, stat + 1);
}
size--;
}
pdma_vaddr = vaddr;
pdma_size = size;
/* Send Terminal Count pulse to floppy controller. */
val = readb(auxio_register);
val |= AUXIO_AUX1_FTCNT;
writeb(val, auxio_register);
val &= ~AUXIO_AUX1_FTCNT;
writeb(val, auxio_register);
doing_pdma = 0;
}
main_interrupt:
return floppy_interrupt(irq, dev_cookie, regs);
}
EXPORT_SYMBOL(sparc_floppy_irq);
#endif
struct sun5_timer {
u64 count0;
u64 limit0;

50
include/asm-sparc64/floppy.h
View file

@ -208,7 +208,55 @@ static void sun_fd_enable_dma(void)
pdma_areasize = pdma_size;
}
extern irqreturn_t sparc_floppy_irq(int, void *, struct pt_regs *);
irqreturn_t sparc_floppy_irq(int irq, void *dev_cookie, struct pt_regs *regs)
{
if (likely(doing_pdma)) {
void __iomem *stat = (void __iomem *) fdc_status;
unsigned char *vaddr = pdma_vaddr;
unsigned long size = pdma_size;
u8 val;
while (size) {
val = readb(stat);
if (unlikely(!(val & 0x80))) {
pdma_vaddr = vaddr;
pdma_size = size;
return IRQ_HANDLED;
}
if (unlikely(!(val & 0x20))) {
pdma_vaddr = vaddr;
pdma_size = size;
doing_pdma = 0;
goto main_interrupt;
}
if (val & 0x40) {
/* read */
*vaddr++ = readb(stat + 1);
} else {
unsigned char data = *vaddr++;
/* write */
writeb(data, stat + 1);
}
size--;
}
pdma_vaddr = vaddr;
pdma_size = size;
/* Send Terminal Count pulse to floppy controller. */
val = readb(auxio_register);
val |= AUXIO_AUX1_FTCNT;
writeb(val, auxio_register);
val &= ~AUXIO_AUX1_FTCNT;
writeb(val, auxio_register);
doing_pdma = 0;
}
main_interrupt:
return floppy_interrupt(irq, dev_cookie, regs);
}
static int sun_fd_request_irq(void)
{