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m68k/mac: cleanup mac_irq_pending 

mac_irq_pending() has only one caller (mac_esp.c). Nothing tests for Baboon, PSC or OSS pending interrupts. Until that need arises, let's keep it simple and remove all the unused abstraction. Replace it with a routine to check for SCSI DRQ.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
This commit is contained in:
Finn Thain 2011-10-24 01:11:14 +11:00 committed by Geert Uytterhoeven
parent 56e63689fd
commit 30c0527d15
8 changed files with 11 additions and 101 deletions
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2
arch/m68k/include/asm/mac_via.h
View File

@ -254,6 +254,8 @@
extern volatile __u8 *via1,*via2;
extern int rbv_present,via_alt_mapping;
extern int via2_scsi_drq_pending(void);
static inline int rbv_set_video_bpp(int bpp)
{
char val = (bpp==1)?0:(bpp==2)?1:(bpp==4)?2:(bpp==8)?3:-1;

2
arch/m68k/include/asm/macintosh.h
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@ -11,7 +11,7 @@
extern void mac_reset(void);
extern void mac_poweroff(void);
extern void mac_init_IRQ(void);
extern int mac_irq_pending(unsigned int);
extern void mac_irq_enable(struct irq_data *data);
extern void mac_irq_disable(struct irq_data *data);

7
arch/m68k/mac/baboon.c
View File

@ -123,10 +123,3 @@ void baboon_irq_disable(int irq)
if (baboon_disabled)
mac_irq_disable(irq_get_irq_data(IRQ_NUBUS_C));
}
int baboon_irq_pending(int irq)
{
int irq_idx = IRQ_IDX(irq);
return baboon->mb_ifr & (1 << irq_idx);
}

32
arch/m68k/mac/macints.c
View File

@ -142,7 +142,6 @@ extern void via_register_interrupts(void);
extern void via_irq_enable(int);
extern void via_irq_disable(int);
extern void via_irq_clear(int);
extern int via_irq_pending(int);
/*
* OSS hooks
@ -152,7 +151,6 @@ extern void oss_register_interrupts(void);
extern void oss_irq_enable(int);
extern void oss_irq_disable(int);
extern void oss_irq_clear(int);
extern int oss_irq_pending(int);
/*
* PSC hooks
@ -162,7 +160,6 @@ extern void psc_register_interrupts(void);
extern void psc_irq_enable(int);
extern void psc_irq_disable(int);
extern void psc_irq_clear(int);
extern int psc_irq_pending(int);
/*
* IOP hooks
@ -239,7 +236,6 @@ void __init mac_init_IRQ(void)
/*
* mac_irq_enable - enable an interrupt source
* mac_irq_disable - disable an interrupt source
* mac_irq_pending - returns the pending status of an IRQ (nonzero = pending)
*
* These routines are just dispatchers to the VIA/OSS/PSC routines.
*/
@ -314,34 +310,6 @@ void mac_irq_disable(struct irq_data *data)
}
}
int mac_irq_pending(unsigned int irq)
{
switch(IRQ_SRC(irq)) {
case 1:
return via_irq_pending(irq);
case 2:
case 7:
if (oss_present)
return oss_irq_pending(irq);
else
return via_irq_pending(irq);
case 3:
case 5:
case 6:
if (psc_present)
return psc_irq_pending(irq);
else if (oss_present)
return oss_irq_pending(irq);
break;
case 4:
if (psc_present)
return psc_irq_pending(irq);
break;
}
return 0;
}
EXPORT_SYMBOL(mac_irq_pending);
static int num_debug[8];
irqreturn_t mac_debug_handler(int irq, void *dev_id)

29
arch/m68k/mac/oss.c
View File

@ -219,32 +219,3 @@ void oss_irq_disable(int irq) {
#endif
}
}
/*
* Check to see if a specific OSS interrupt is pending
*/
int oss_irq_pending(int irq)
{
switch(irq) {
case IRQ_MAC_SCC:
return oss->irq_pending & OSS_IP_IOPSCC;
break;
case IRQ_MAC_ADB:
return oss->irq_pending & OSS_IP_IOPISM;
break;
case IRQ_MAC_SCSI:
return oss->irq_pending & OSS_IP_SCSI;
break;
case IRQ_NUBUS_9:
case IRQ_NUBUS_A:
case IRQ_NUBUS_B:
case IRQ_NUBUS_C:
case IRQ_NUBUS_D:
case IRQ_NUBUS_E:
irq -= NUBUS_SOURCE_BASE;
return oss->irq_pending & (1 << irq);
break;
}
return 0;
}

9
arch/m68k/mac/psc.c
View File

@ -180,12 +180,3 @@ void psc_irq_disable(int irq) {
#endif
psc_write_byte(pIER, 1 << irq_idx);
}
int psc_irq_pending(int irq)
{
int irq_src = IRQ_SRC(irq);
int irq_idx = IRQ_IDX(irq);
int pIFR = pIERbase + (irq_src << 4);
return psc_read_byte(pIFR) & (1 << irq_idx);
}

28
arch/m68k/mac/via.c
View File

@ -585,28 +585,6 @@ void via_irq_disable(int irq) {
}
}
/*
* Returns nonzero if an interrupt is pending on the given
* VIA/IRQ combination.
*/
int via_irq_pending(int irq)
{
int irq_src = IRQ_SRC(irq);
int irq_idx = IRQ_IDX(irq);
int irq_bit = 1 << irq_idx;
if (irq_src == 1) {
return via1[vIFR] & irq_bit;
} else if (irq_src == 2) {
return via2[gIFR] & irq_bit;
} else if (irq_src == 7) {
/* Always 0 for MAC_VIA_QUADRA if the slot irq is disabled. */
return ~via2[gBufA] & irq_bit;
}
return 0;
}
void via1_set_head(int head)
{
if (head == 0)
@ -615,3 +593,9 @@ void via1_set_head(int head)
via1[vBufA] |= VIA1A_vHeadSel;
}
EXPORT_SYMBOL(via1_set_head);
int via2_scsi_drq_pending(void)
{
return via2[gIFR] & (1 << IRQ_IDX(IRQ_MAC_SCSIDRQ));
}
EXPORT_SYMBOL(via2_scsi_drq_pending);

3
drivers/scsi/mac_esp.c
View File

@ -25,6 +25,7 @@
#include <asm/dma.h>
#include <asm/macints.h>
#include <asm/macintosh.h>
#include <asm/mac_via.h>
#include <scsi/scsi_host.h>
@ -149,7 +150,7 @@ static inline int mac_esp_wait_for_dreq(struct esp *esp)
do {
if (mep->pdma_regs == NULL) {
if (mac_irq_pending(IRQ_MAC_SCSIDRQ))
if (via2_scsi_drq_pending())
return 0;
} else {
if (nubus_readl(mep->pdma_regs) & 0x200)