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serial-pci-multi: factor out multi_serial_get_port_count()

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Common function to be reused in next patch.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
This commit is contained in:
Marc-André Lureau 2019-10-21 23:31:20 +02:00
parent 1e419ee68f
commit 4305d4825c
1 changed files with 18 additions and 17 deletions
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35
hw/char/serial-pci-multi.c
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@ -77,33 +77,34 @@ static void multi_serial_irq_mux(void *opaque, int n, int level)
pci_set_irq(&pci->dev, pending); pci_set_irq(&pci->dev, pending);
} }
static size_t multi_serial_get_port_count(PCIDeviceClass *pc)
{
switch (pc->device_id) {
case 0x0003:
return 2;
case 0x0004:
return 4;
}
g_assert_not_reached();
}
static void multi_serial_pci_realize(PCIDevice *dev, Error **errp) static void multi_serial_pci_realize(PCIDevice *dev, Error **errp)
{ {
PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(dev); PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(dev);
PCIMultiSerialState *pci = DO_UPCAST(PCIMultiSerialState, dev, dev); PCIMultiSerialState *pci = DO_UPCAST(PCIMultiSerialState, dev, dev);
SerialState *s; SerialState *s;
Error *err = NULL; Error *err = NULL;
int i, nr_ports = 0; size_t i, nports = multi_serial_get_port_count(pc);
switch (pc->device_id) {
case 0x0003:
nr_ports = 2;
break;
case 0x0004:
nr_ports = 4;
break;
}
assert(nr_ports > 0);
assert(nr_ports <= PCI_SERIAL_MAX_PORTS);
pci->dev.config[PCI_CLASS_PROG] = pci->prog_if; pci->dev.config[PCI_CLASS_PROG] = pci->prog_if;
pci->dev.config[PCI_INTERRUPT_PIN] = 0x01; pci->dev.config[PCI_INTERRUPT_PIN] = 0x01;
memory_region_init(&pci->iobar, OBJECT(pci), "multiserial", 8 * nr_ports); memory_region_init(&pci->iobar, OBJECT(pci), "multiserial", 8 * nports);
pci_register_bar(&pci->dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &pci->iobar); pci_register_bar(&pci->dev, 0, PCI_BASE_ADDRESS_SPACE_IO, &pci->iobar);
pci->irqs = qemu_allocate_irqs(multi_serial_irq_mux, pci, pci->irqs = qemu_allocate_irqs(multi_serial_irq_mux, pci, nports);
nr_ports);
for (i = 0; i < nr_ports; i++) { for (i = 0; i < nports; i++) {
s = pci->state + i; s = pci->state + i;
s->baudbase = 115200; s->baudbase = 115200;
serial_realize_core(s, &err); serial_realize_core(s, &err);
@ -113,7 +114,7 @@ static void multi_serial_pci_realize(PCIDevice *dev, Error **errp)
return; return;
} }
s->irq = pci->irqs[i]; s->irq = pci->irqs[i];
pci->name[i] = g_strdup_printf("uart #%d", i + 1); pci->name[i] = g_strdup_printf("uart #%zu", i + 1);
memory_region_init_io(&s->io, OBJECT(pci), &serial_io_ops, s, memory_region_init_io(&s->io, OBJECT(pci), &serial_io_ops, s,
pci->name[i], 8); pci->name[i], 8);
memory_region_add_subregion(&pci->iobar, 8 * i, &s->io); memory_region_add_subregion(&pci->iobar, 8 * i, &s->io);