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Message-ID: <4A5B3F1B.3040207@demig.de>
Date: Mon, 13 Jul 2009 14:05:15 +0000
From: Norbert Koch <nkoch@demig.de>
Organization: demig Prozessautomatisierung GmbH
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Subject: bus device driver
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X-List-Received-Date: Mon, 13 Jul 2009 14:32:42 -0000

Hello.

I just started to write a device
driver for a multi-function pci card.
This card replaces a number of
independant isa hardware devices.
This pci card contains memory, i/o
and interrupt sources.
I want my device driver to
serve as a bus driver between
the pci driver and the specific
device drivers.

Do I need more than the following (see below)?
Do I have to do any bookkeeping for allocated resources?

/*****************************************/
int mypci_probe (device_t dev)
{
  if (pci_get_vendor (dev) == MYVENDOR
     && pci_get_devid (dev) == MYDEVID) {
    device_set_desc (dev, "MYPCI bus");
    return 0;
  };
  return ENXIO;
}

static devclass_t mypci_devclass;

/* stolen from ISA/PCI brigde */
static device_method_t mypci_methods[] =
{
  /* device */
  DEVMETHOD (device_probe, mypci_probe),
  DEVMETHOD (device_attach, bus_generic_attach),
  DEVMETHOD (device_detach, bus_generic_detach),

  /* bus */
  DEVMETHOD (bus_print_child, bus_generic_print_child),
  DEVMETHOD (bus_alloc_resource, bus_generic_alloc_resource),
  DEVMETHOD (bus_release_resource, bus_generic_release_resource),
  DEVMETHOD (bus_activate_resource, bus_generic_activate_resource),
  DEVMETHOD (bus_deactivate_resource, bus_generic_deactivate_resource),
  DEVMETHOD (bus_setup_intr, bus_generic_setup_intr),
  DEVMETHOD (bus_teardown_intr, bus_generic_teardown_intr),

  {0, 0}
};

static driver_t mypci_driver = {
  "mypci",
  mypci_methods,
  0
};
/*****************************************/

Thank you for any help.
Norbert Koch