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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright 2018 Gaëtan Rivet
*/
#include <rte_bus.h>
#include <rte_bus_pci.h>
#include <rte_dev.h>
#include <rte_errno.h>
#include <rte_kvargs.h>
#include <rte_pci.h>
#include "private.h"
enum pci_params {
RTE_PCI_PARAM_ADDR,
RTE_PCI_PARAM_MAX,
};
static const char * const pci_params_keys[] = {
[RTE_PCI_PARAM_ADDR] = "addr",
[RTE_PCI_PARAM_MAX] = NULL,
};
static int
pci_addr_kv_cmp(const char *key __rte_unused,
const char *value,
void *_addr2)
{
struct rte_pci_addr _addr1;
struct rte_pci_addr *addr1 = &_addr1;
struct rte_pci_addr *addr2 = _addr2;
if (rte_pci_addr_parse(value, addr1))
return -1;
return -abs(rte_pci_addr_cmp(addr1, addr2));
}
static int
pci_dev_match(const struct rte_device *dev,
const void *_kvlist)
{
const struct rte_kvargs *kvlist = _kvlist;
const struct rte_pci_device *pdev;
if (kvlist == NULL)
/* Empty string matches everything. */
return 0;
pdev = RTE_DEV_TO_PCI_CONST(dev);
/* if any field does not match. */
if (rte_kvargs_process(kvlist, pci_params_keys[RTE_PCI_PARAM_ADDR],
&pci_addr_kv_cmp,
(void *)(intptr_t)&pdev->addr))
return 1;
return 0;
}
void *
rte_pci_dev_iterate(const void *start,
const char *str,
const struct rte_dev_iterator *it __rte_unused)
{
rte_bus_find_device_t find_device;
struct rte_kvargs *kvargs = NULL;
struct rte_device *dev;
if (str != NULL) {
kvargs = rte_kvargs_parse(str, pci_params_keys);
if (kvargs == NULL) {
RTE_LOG(ERR, EAL, "cannot parse argument list\n");
rte_errno = EINVAL;
return NULL;
}
}
find_device = rte_pci_bus.bus.find_device;
dev = find_device(start, pci_dev_match, kvargs);
rte_kvargs_free(kvargs);
return dev;
}
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