xref: /src/sys/dev/pci/pci_stub.c

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: pci_stub.c,v 1.1.30.2 2015/12/27 12:09:50 skrll Exp $");

#ifdef _KERNEL_OPT
#include "opt_pci.h"
#endif

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kmem.h>

#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>

int default_pci_bus_devorder(pci_chipset_tag_t, int, uint8_t *, int);
int default_pci_chipset_tag_create(pci_chipset_tag_t, uint64_t,
    const struct pci_overrides *, void *, pci_chipset_tag_t *);
void default_pci_chipset_tag_destroy(pci_chipset_tag_t);
pci_intr_type_t default_pci_intr_type(pci_intr_handle_t);
int default_pci_intr_alloc(const struct pci_attach_args *,
    pci_intr_handle_t **, int *, pci_intr_type_t);
void default_pci_intr_release(pci_chipset_tag_t, pci_intr_handle_t *, int);
void *default_pci_intr_establish_xname(pci_chipset_tag_t, pci_intr_handle_t,
    int, int (*)(void *), void *, const char *);

__strict_weak_alias(pci_bus_devorder, default_pci_bus_devorder);
__strict_weak_alias(pci_chipset_tag_create, default_pci_chipset_tag_create);
__strict_weak_alias(pci_chipset_tag_destroy, default_pci_chipset_tag_destroy);

__strict_weak_alias(pci_intr_type, default_pci_intr_type);
__strict_weak_alias(pci_intr_alloc, default_pci_intr_alloc);
__strict_weak_alias(pci_intr_release, default_pci_intr_release);
__strict_weak_alias(pci_intr_establish_xname, default_pci_intr_establish_xname);

int
default_pci_bus_devorder(pci_chipset_tag_t pc, int bus, uint8_t *devs,
    int maxdevs)
{
	int i, n;

	n = MIN(pci_bus_maxdevs(pc, bus), maxdevs);
	for (i = 0; i < n; i++)
		devs[i] = i;

	return n;
}

void
default_pci_chipset_tag_destroy(pci_chipset_tag_t pc)
{
}

int
default_pci_chipset_tag_create(pci_chipset_tag_t opc, const uint64_t present,
    const struct pci_overrides *ov, void *ctx, pci_chipset_tag_t *pcp)
{
	return EOPNOTSUPP;
}

pci_intr_type_t
default_pci_intr_type(pci_intr_handle_t ih)
{

	return PCI_INTR_TYPE_INTX;
}

int
default_pci_intr_alloc(const struct pci_attach_args *pa,
    pci_intr_handle_t **ihps, int *counts, pci_intr_type_t max_type)
{
	pci_intr_handle_t *ihp;

	if (counts != NULL && counts[PCI_INTR_TYPE_INTX] == 0)
		return EINVAL;

	ihp = kmem_alloc(sizeof(*ihp), KM_SLEEP);
	if (ihp == NULL)
		return ENOMEM;

	if (pci_intr_map(pa, ihp)) {
		kmem_free(ihp, sizeof(*ihp));
		return EINVAL;
	}

	ihps[0] = ihp;
	return 0;
}

void
default_pci_intr_release(pci_chipset_tag_t pc, pci_intr_handle_t *pih,
    int count)
{

	kmem_free(pih, sizeof(*pih));
}

void *
default_pci_intr_establish_xname(pci_chipset_tag_t pc, pci_intr_handle_t ih,
    int level, int (*func)(void *), void *arg, const char *__nouse)
{

	return pci_intr_establish(pc, ih, level, func, arg);
}