4.115
Line | |
---|
1 | /* PCI Help function, iterate all PCI device children of PCI bus. |
---|
2 | * |
---|
3 | * COPYRIGHT (c) 2010. |
---|
4 | * Cobham Gaisler AB. |
---|
5 | * |
---|
6 | * The license and distribution terms for this file may be |
---|
7 | * found in the file LICENSE in this distribution or at |
---|
8 | * http://www.rtems.com/license/LICENSE. |
---|
9 | */ |
---|
10 | |
---|
11 | #include <pci/cfg.h> |
---|
12 | |
---|
13 | /* Iterate over all PCI devices on a bus (not child buses) and call func(), |
---|
14 | * iteration is stopped if a non-zero value is returned by func(). |
---|
15 | * |
---|
16 | * search options: 0 (no child buses), 1 (depth first), 2 (breadth first) |
---|
17 | */ |
---|
18 | int pci_for_each_child( |
---|
19 | struct pci_bus *bus, |
---|
20 | int (*func)(struct pci_dev *, void *arg), |
---|
21 | void *arg, |
---|
22 | int search) |
---|
23 | { |
---|
24 | struct pci_dev *dev = bus->devs; |
---|
25 | int ret; |
---|
26 | |
---|
27 | while (dev) { |
---|
28 | ret = func(dev, arg); |
---|
29 | if (ret) |
---|
30 | return ret; |
---|
31 | if (search == SEARCH_DEPTH && (dev->flags & PCI_DEV_BRIDGE)) { |
---|
32 | ret = pci_for_each_child((struct pci_bus *)dev, |
---|
33 | func, arg, search); |
---|
34 | if (ret) |
---|
35 | return ret; |
---|
36 | } |
---|
37 | dev = dev->next; |
---|
38 | } |
---|
39 | |
---|
40 | return 0; |
---|
41 | } |
---|
Note: See
TracBrowser
for help on using the repository browser.