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authorDavid S. Miller <davem@sunset.davemloft.net>2006-06-25 04:32:25 -0400
committerDavid S. Miller <davem@sunset.davemloft.net>2006-06-26 02:15:01 -0400
commit350559961593a9680244b22b32733a49e21f25d6 (patch)
tree587baa8873bfede50fb9d7fdf06176001f2f947f
parent698539187aee83ea6843e29875dde70b473f8bc1 (diff)
[SPARC64]: Allow floppy driver to build modular.
Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--arch/sparc64/kernel/irq.c61
-rw-r--r--include/asm-sparc64/floppy.h50
2 files changed, 49 insertions, 62 deletions
diff --git a/arch/sparc64/kernel/irq.c b/arch/sparc64/kernel/irq.c
index 31e0fbb0d82c..cc89b06d0178 100644
--- a/arch/sparc64/kernel/irq.c
+++ b/arch/sparc64/kernel/irq.c
@@ -563,67 +563,6 @@ void handler_irq(int irq, struct pt_regs *regs)
563 irq_exit(); 563 irq_exit();
564} 564}
565 565
566#ifdef CONFIG_BLK_DEV_FD
567extern irqreturn_t floppy_interrupt(int, void *, struct pt_regs *);
568
569/* XXX No easy way to include asm/floppy.h XXX */
570extern unsigned char *pdma_vaddr;
571extern unsigned long pdma_size;
572extern volatile int doing_pdma;
573extern unsigned long fdc_status;
574
575irqreturn_t sparc_floppy_irq(int irq, void *dev_cookie, struct pt_regs *regs)
576{
577 if (likely(doing_pdma)) {
578 void __iomem *stat = (void __iomem *) fdc_status;
579 unsigned char *vaddr = pdma_vaddr;
580 unsigned long size = pdma_size;
581 u8 val;
582
583 while (size) {
584 val = readb(stat);
585 if (unlikely(!(val & 0x80))) {
586 pdma_vaddr = vaddr;
587 pdma_size = size;
588 return IRQ_HANDLED;
589 }
590 if (unlikely(!(val & 0x20))) {
591 pdma_vaddr = vaddr;
592 pdma_size = size;
593 doing_pdma = 0;
594 goto main_interrupt;
595 }
596 if (val & 0x40) {
597 /* read */
598 *vaddr++ = readb(stat + 1);
599 } else {
600 unsigned char data = *vaddr++;
601
602 /* write */
603 writeb(data, stat + 1);
604 }
605 size--;
606 }
607
608 pdma_vaddr = vaddr;
609 pdma_size = size;
610
611 /* Send Terminal Count pulse to floppy controller. */
612 val = readb(auxio_register);
613 val |= AUXIO_AUX1_FTCNT;
614 writeb(val, auxio_register);
615 val &= ~AUXIO_AUX1_FTCNT;
616 writeb(val, auxio_register);
617
618 doing_pdma = 0;
619 }
620
621main_interrupt:
622 return floppy_interrupt(irq, dev_cookie, regs);
623}
624EXPORT_SYMBOL(sparc_floppy_irq);
625#endif
626
627struct sun5_timer { 566struct sun5_timer {
628 u64 count0; 567 u64 count0;
629 u64 limit0; 568 u64 limit0;
diff --git a/include/asm-sparc64/floppy.h b/include/asm-sparc64/floppy.h
index f8d57bb5570c..b591d0e8d8f0 100644
--- a/include/asm-sparc64/floppy.h
+++ b/include/asm-sparc64/floppy.h
@@ -208,7 +208,55 @@ static void sun_fd_enable_dma(void)
208 pdma_areasize = pdma_size; 208 pdma_areasize = pdma_size;
209} 209}
210 210
211extern irqreturn_t sparc_floppy_irq(int, void *, struct pt_regs *); 211irqreturn_t sparc_floppy_irq(int irq, void *dev_cookie, struct pt_regs *regs)
212{
213 if (likely(doing_pdma)) {
214 void __iomem *stat = (void __iomem *) fdc_status;
215 unsigned char *vaddr = pdma_vaddr;
216 unsigned long size = pdma_size;
217 u8 val;
218
219 while (size) {
220 val = readb(stat);
221 if (unlikely(!(val & 0x80))) {
222 pdma_vaddr = vaddr;
223 pdma_size = size;
224 return IRQ_HANDLED;
225 }
226 if (unlikely(!(val & 0x20))) {
227 pdma_vaddr = vaddr;
228 pdma_size = size;
229 doing_pdma = 0;
230 goto main_interrupt;
231 }
232 if (val & 0x40) {
233 /* read */
234 *vaddr++ = readb(stat + 1);
235 } else {
236 unsigned char data = *vaddr++;
237
238 /* write */
239 writeb(data, stat + 1);
240 }
241 size--;
242 }
243
244 pdma_vaddr = vaddr;
245 pdma_size = size;
246
247 /* Send Terminal Count pulse to floppy controller. */
248 val = readb(auxio_register);
249 val |= AUXIO_AUX1_FTCNT;
250 writeb(val, auxio_register);
251 val &= ~AUXIO_AUX1_FTCNT;
252 writeb(val, auxio_register);
253
254 doing_pdma = 0;
255 }
256
257main_interrupt:
258 return floppy_interrupt(irq, dev_cookie, regs);
259}
212 260
213static int sun_fd_request_irq(void) 261static int sun_fd_request_irq(void)
214{ 262{