106 lines
2.4 KiB
C
106 lines
2.4 KiB
C
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#include <ddk.h>
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#include <linux/errno.h>
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#include <mutex.h>
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#include <pci.h>
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#include <syscall.h>
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#include "acpi.h"
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#include "acpi_bus.h"
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#define PREFIX "ACPI: "
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static int acpi_pci_unbind(struct acpi_device *device)
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{
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struct pci_dev *dev;
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dev = acpi_get_pci_dev(device->handle);
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if (!dev)
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goto out;
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// device_set_run_wake(&dev->dev, false);
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// pci_acpi_remove_pm_notifier(device);
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if (!dev->subordinate)
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goto out;
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// acpi_pci_irq_del_prt(dev->subordinate);
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device->ops.bind = NULL;
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device->ops.unbind = NULL;
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out:
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// pci_dev_put(dev);
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return 0;
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}
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static int acpi_pci_bind(struct acpi_device *device)
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{
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ACPI_STATUS status;
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ACPI_HANDLE handle;
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struct pci_bus *bus;
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struct pci_dev *dev;
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dev = acpi_get_pci_dev(device->handle);
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if (!dev)
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return 0;
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device->pci_dev = dev;
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dev->acpi_dev = device;
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dbgprintf("bind ACPI %s PCI_%x_%x\n", device->pnp.bus_id,
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dev->vendor, dev->device);
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// pci_acpi_add_pm_notifier(device, dev);
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// if (device->wakeup.flags.run_wake)
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// device_set_run_wake(&dev->dev, true);
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/*
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* Install the 'bind' function to facilitate callbacks for
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* children of the P2P bridge.
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*/
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if (dev->subordinate) {
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ACPI_DEBUG_PRINT((ACPI_DB_INFO,
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"Device %04x:%02x:%02x.%d is a PCI bridge\n",
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pci_domain_nr(dev->bus), dev->bus->number,
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PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn)));
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device->ops.bind = acpi_pci_bind;
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device->ops.unbind = acpi_pci_unbind;
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}
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/*
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* Evaluate and parse _PRT, if exists. This code allows parsing of
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* _PRT objects within the scope of non-bridge devices. Note that
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* _PRTs within the scope of a PCI bridge assume the bridge's
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* subordinate bus number.
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*
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* TBD: Can _PRTs exist within the scope of non-bridge PCI devices?
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*/
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status = AcpiGetHandle(device->handle, METHOD_NAME__PRT, &handle);
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if (ACPI_FAILURE(status))
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goto out;
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if (dev->subordinate)
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bus = dev->subordinate;
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else
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bus = dev->bus;
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acpi_pci_irq_add_prt(device->handle, bus);
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out:
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// pci_dev_put(dev);
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return 0;
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}
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int acpi_pci_bind_root(struct acpi_device *device)
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{
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device->ops.bind = acpi_pci_bind;
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device->ops.unbind = acpi_pci_unbind;
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return 0;
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}
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