irq: Allocate IRQs individually

Allocate each IRQ individually on array allocations. This prepares for
QOMification of IRQs, where pointers to individual IRQs may be taken
and handed around for usage as QOM Links. The g_renew() scheme used here
is too fragile and would break all existing links should an IRQ list
be extended.

We now have to pass the IRQ count to qemu_free_irqs(). We have so few
call sites however, so this change is reasonably trivial.

Cc: agarcia@igalia.com
Cc: mst@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Alberto Garcia <agarcia@igalia.com>
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
This commit is contained in:
Peter Crosthwaite 2014-06-18 00:56:31 -07:00 committed by Andreas Färber
parent f3c7d0389f
commit f173d57a4c
5 changed files with 11 additions and 17 deletions

View File

@ -152,7 +152,7 @@ static void multi_serial_pci_exit(PCIDevice *dev)
g_free(pci->name[i]); g_free(pci->name[i]);
} }
memory_region_destroy(&pci->iobar); memory_region_destroy(&pci->iobar);
qemu_free_irqs(pci->irqs); qemu_free_irqs(pci->irqs, pci->ports);
} }
static const VMStateDescription vmstate_pci_serial = { static const VMStateDescription vmstate_pci_serial = {

View File

@ -42,23 +42,14 @@ qemu_irq *qemu_extend_irqs(qemu_irq *old, int n_old, qemu_irq_handler handler,
void *opaque, int n) void *opaque, int n)
{ {
qemu_irq *s; qemu_irq *s;
struct IRQState *p;
int i; int i;
if (!old) { if (!old) {
n_old = 0; n_old = 0;
} }
s = old ? g_renew(qemu_irq, old, n + n_old) : g_new(qemu_irq, n); s = old ? g_renew(qemu_irq, old, n + n_old) : g_new(qemu_irq, n);
p = old ? g_renew(struct IRQState, s[0], n + n_old) : for (i = n_old; i < n + n_old; i++) {
g_new(struct IRQState, n); s[i] = qemu_allocate_irq(handler, opaque, i);
for (i = 0; i < n + n_old; i++) {
if (i >= n_old) {
p->handler = handler;
p->opaque = opaque;
p->n = i;
}
s[i] = p;
p++;
} }
return s; return s;
} }
@ -80,9 +71,12 @@ qemu_irq qemu_allocate_irq(qemu_irq_handler handler, void *opaque, int n)
return irq; return irq;
} }
void qemu_free_irqs(qemu_irq *s) void qemu_free_irqs(qemu_irq *s, int n)
{ {
g_free(s[0]); int i;
for (i = 0; i < n; i++) {
qemu_free_irq(s[i]);
}
g_free(s); g_free(s);
} }

View File

@ -949,7 +949,7 @@ static void device_finalize(Object *obj)
QLIST_FOREACH_SAFE(ngl, &dev->gpios, node, next) { QLIST_FOREACH_SAFE(ngl, &dev->gpios, node, next) {
QLIST_REMOVE(ngl, node); QLIST_REMOVE(ngl, node);
qemu_free_irqs(ngl->in); qemu_free_irqs(ngl->in, ngl->num_in);
g_free(ngl->name); g_free(ngl->name);
g_free(ngl); g_free(ngl);
/* ngl->out irqs are owned by the other end and should not be freed /* ngl->out irqs are owned by the other end and should not be freed

View File

@ -66,7 +66,7 @@ static void ipack_device_unrealize(DeviceState *dev, Error **errp)
return; return;
} }
qemu_free_irqs(idev->irq); qemu_free_irqs(idev->irq, 2);
} }
static Property ipack_device_props[] = { static Property ipack_device_props[] = {

View File

@ -42,7 +42,7 @@ qemu_irq qemu_allocate_irq(qemu_irq_handler handler, void *opaque, int n);
qemu_irq *qemu_extend_irqs(qemu_irq *old, int n_old, qemu_irq_handler handler, qemu_irq *qemu_extend_irqs(qemu_irq *old, int n_old, qemu_irq_handler handler,
void *opaque, int n); void *opaque, int n);
void qemu_free_irqs(qemu_irq *s); void qemu_free_irqs(qemu_irq *s, int n);
void qemu_free_irq(qemu_irq irq); void qemu_free_irq(qemu_irq irq);
/* Returns a new IRQ with opposite polarity. */ /* Returns a new IRQ with opposite polarity. */