[SPARC64]: Allow floppy driver to build modular.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/asm-sparc64/floppy.h b/include/asm-sparc64/floppy.h
index f8d57bb..b591d0e 100644
--- a/include/asm-sparc64/floppy.h
+++ b/include/asm-sparc64/floppy.h
@@ -208,7 +208,55 @@
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)
{