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Add isa_reserve_irq().

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Introduce isa_reserve_irq() which marks an irq reserved and returns
the appropriate qemu_irq entry from the i8259 table.

isa_reserve_irq() is a temporary interface to be used to allocate ISA
IRQs for devices which have not yet been converted to qdev, and for
special cases which are not suited for qdev conversions, such as the
'ferr'.

This patch goes on top of Gerd Hoffmann's which makes isa-bus.c own
the ISA irq table.

[ added isa-bus.o to some targets to fix build failures  -- kraxel ]

Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Jes Sorensen 2009-08-14 11:36:15 +02:00 • committed by Anthony Liguori
parent 2091ba23e8
commit 3a38d437ca
7 changed files with 60 additions and 34 deletions
Download patch file Download diff file Expand all files Collapse all files

12
hw/cs4231a.c
View file

@ -60,10 +60,9 @@ static struct {
typedef struct CSState {
QEMUSoundCard card;
qemu_irq *pic;
qemu_irq pic;
uint32_t regs[CS_REGS];
uint8_t dregs[CS_DREGS];
int irq;
int dma;
int port;
int shift;
@ -483,7 +482,7 @@ IO_WRITE_PROTO (cs_write)
case Alternate_Feature_Status:
if ((s->dregs[iaddr] & PI) && !(val & PI)) {
/* XXX: TI CI */
qemu_irq_lower (s->pic[s->irq]);
qemu_irq_lower (s->pic);
s->regs[Status] &= ~INT;
}
s->dregs[iaddr] = val;
@ -503,7 +502,7 @@ IO_WRITE_PROTO (cs_write)
case Status:
if (s->regs[Status] & INT) {
qemu_irq_lower (s->pic[s->irq]);
qemu_irq_lower (s->pic);
}
s->regs[Status] &= ~INT;
s->dregs[Alternate_Feature_Status] &= ~(PI | CI | TI);
@ -588,7 +587,7 @@ static int cs_dma_read (void *opaque, int nchan, int dma_pos, int dma_len)
s->regs[Status] |= INT;
s->dregs[Alternate_Feature_Status] |= PI;
s->transferred = 0;
qemu_irq_raise (s->pic[s->irq]);
qemu_irq_raise (s->pic);
}
else {
s->transferred += written;
@ -643,8 +642,7 @@ int cs4231a_init (qemu_irq *pic)
s = qemu_mallocz (sizeof (*s));
s->pic = pic;
s->irq = conf.irq;
s->pic = isa_reserve_irq(conf.irq);
s->dma = conf.dma;
s->port = conf.port;