static int
legacy_pcib_alloc_msix(device_t pcib, device_t dev, int *irq)
{
device_t bus;
bus = device_get_parent(pcib);
return (PCIB_ALLOC_MSIX(device_get_parent(bus), dev, irq));
}
static int
acpi_pcib_alloc_msix(device_t pcib, device_t dev, int *irq, int cpuid)
{
device_t bus;
bus = device_get_parent(pcib);
return (PCIB_ALLOC_MSIX(device_get_parent(bus), dev, irq, cpuid));
}
static int
dmar_alloc_irq(device_t dev, struct dmar_unit *unit, int idx)
{
device_t pcib;
struct dmar_msi_data *dmd;
uint64_t msi_addr;
uint32_t msi_data;
int error;
dmd = &unit->intrs[idx];
pcib = device_get_parent(device_get_parent(dev)); /* Really not pcib */
error = PCIB_ALLOC_MSIX(pcib, dev, &dmd->irq);
if (error != 0) {
device_printf(dev, "cannot allocate %s interrupt, %d\n",
dmd->name, error);
goto err1;
}
error = bus_set_resource(dev, SYS_RES_IRQ, dmd->irq_rid,
dmd->irq, 1);
if (error != 0) {
device_printf(dev, "cannot set %s interrupt resource, %d\n",
dmd->name, error);
goto err2;
}
dmd->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
&dmd->irq_rid, RF_ACTIVE);
if (dmd->irq_res == NULL) {
device_printf(dev,
"cannot allocate resource for %s interrupt\n", dmd->name);
error = ENXIO;
goto err3;
}
error = bus_setup_intr(dev, dmd->irq_res, INTR_TYPE_MISC,
dmd->handler, NULL, unit, &dmd->intr_handle);
if (error != 0) {
device_printf(dev, "cannot setup %s interrupt, %d\n",
dmd->name, error);
goto err4;
}
bus_describe_intr(dev, dmd->irq_res, dmd->intr_handle, "%s", dmd->name);
error = PCIB_MAP_MSI(pcib, dev, dmd->irq, &msi_addr, &msi_data);
if (error != 0) {
device_printf(dev, "cannot map %s interrupt, %d\n",
dmd->name, error);
goto err5;
}
dmar_write4(unit, dmd->msi_data_reg, msi_data);
dmar_write4(unit, dmd->msi_addr_reg, msi_addr);
/* Only for xAPIC mode */
dmar_write4(unit, dmd->msi_uaddr_reg, msi_addr >> 32);
return (0);
err5:
bus_teardown_intr(dev, dmd->irq_res, dmd->intr_handle);
err4:
bus_release_resource(dev, SYS_RES_IRQ, dmd->irq_rid, dmd->irq_res);
err3:
bus_delete_resource(dev, SYS_RES_IRQ, dmd->irq_rid);
err2:
PCIB_RELEASE_MSIX(pcib, dev, dmd->irq);
dmd->irq = -1;
err1:
return (error);
}
