Hi, all. I have a question about a resource allocation at a child device of PCI device. I'm thinking about to write a CardBud device driver. CardBus is attached at PCI bus. So I think CardBus is a child device of PCI device. Before revision 1.122 of @src/sys/pci/pci.c, I can allocate a resouce when I set rid 0 and call bus_alloc_resource(). CardBus driver is a child of PCI driver, so bus_alloc_resource(), called at CardBus driver, call pci_alloc_resource(). When rid == 0, pci_alloc_resource() call an resource allocation method of parent bus. But revision 1.122 or later, pci_alloc_resource() was rewritten very simply. pci_alloc_resource() only call resource_list_alloc() and resource_list_alloc() returns 0 when requested resource is not registered nor reserved. It seems me new PCI driver assume all resources are assigned by BIOS. But a BIOS of my notebood, VAIO 818/Phoenix BIOS, does not assign a resource for a CardBus socket/ExCA base address register. #of cource, I set a BIOS as 'Plug & Play O/S: No'. I can't allocate a resource using bus_alloc_resource(). How to allocate a resource for a device which resources are not assigned by BIOS? What is a right way to allocate a resource in a new-bus device driver? Thanks, ------- YAMAMOTO Shigeru Internet Initiative Japan Inc. <[EMAIL PROTECTED]> Network Engineering Div. To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
