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Add (virtual) interrupt to PAPR virtual tty device

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Now that we have implemented the PAPR "xics" virtualized interrupt
controller, we can add interrupts in PAPR VIO devices.  This patch adds
interrupt support to the PAPR virtual tty/console device.

Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
David Gibson 2011-04-01 15:15:27 +11:00 • committed by Alexander Graf
parent 00dc738d8a
commit 0201e2da65
3 changed files with 16 additions and 4 deletions
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11
hw/spapr_vty.c
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@ -24,6 +24,10 @@ static void vty_receive(void *opaque, const uint8_t *buf, int size)
VIOsPAPRVTYDevice *dev = (VIOsPAPRVTYDevice *)opaque;
int i;
if ((dev->in == dev->out) && size) {
/* toggle line to simulate edge interrupt */
qemu_irq_pulse(dev->sdev.qirq);
}
for (i = 0; i < size; i++) {
assert((dev->in - dev->out) < VTERM_BUFSIZE);
dev->buf[dev->in++ % VTERM_BUFSIZE] = buf[i];
@ -112,14 +116,19 @@ static target_ulong h_get_term_char(CPUState *env, sPAPREnvironment *spapr,
}
void spapr_vty_create(VIOsPAPRBus *bus,
uint32_t reg, CharDriverState *chardev)
uint32_t reg, CharDriverState *chardev,
qemu_irq qirq, uint32_t vio_irq_num)
{
DeviceState *dev;
VIOsPAPRDevice *sdev;
dev = qdev_create(&bus->bus, "spapr-vty");
qdev_prop_set_uint32(dev, "reg", reg);
qdev_prop_set_chr(dev, "chardev", chardev);
qdev_init_nofail(dev);
sdev = (VIOsPAPRDevice *)dev;
sdev->qirq = qirq;
sdev->vio_irq_num = vio_irq_num;
}
static void vty_hcalls(VIOsPAPRBus *bus)