2 * Copyright (c) 2014 Google, Inc
3 * Written by Simon Glass <sjg@chromium.org>
5 * SPDX-License-Identifier: GPL-2.0+
14 DECLARE_GLOBAL_DATA_PTR
;
16 static int sandbox_pci_write_config(struct udevice
*bus
, pci_dev_t devfn
,
17 uint offset
, ulong value
,
20 struct dm_pci_emul_ops
*ops
;
24 ret
= sandbox_pci_get_emul(bus
, devfn
, &emul
);
26 return ret
== -ENODEV
? 0 : ret
;
27 ops
= pci_get_emul_ops(emul
);
28 if (!ops
|| !ops
->write_config
)
31 return ops
->write_config(emul
, offset
, value
, size
);
34 static int sandbox_pci_read_config(struct udevice
*bus
, pci_dev_t devfn
,
35 uint offset
, ulong
*valuep
,
38 struct dm_pci_emul_ops
*ops
;
42 /* Prepare the default response */
43 *valuep
= pci_get_ff(size
);
44 ret
= sandbox_pci_get_emul(bus
, devfn
, &emul
);
46 return ret
== -ENODEV
? 0 : ret
;
47 ops
= pci_get_emul_ops(emul
);
48 if (!ops
|| !ops
->read_config
)
51 return ops
->read_config(emul
, offset
, valuep
, size
);
54 static const struct dm_pci_ops sandbox_pci_ops
= {
55 .read_config
= sandbox_pci_read_config
,
56 .write_config
= sandbox_pci_write_config
,
59 static const struct udevice_id sandbox_pci_ids
[] = {
60 { .compatible
= "sandbox,pci" },
64 U_BOOT_DRIVER(pci_sandbox
) = {
65 .name
= "pci_sandbox",
67 .of_match
= sandbox_pci_ids
,
68 .ops
= &sandbox_pci_ops
,
70 /* Attach an emulator if we can */
71 .child_post_bind
= dm_scan_fdt_dev
,
72 .per_child_platdata_auto_alloc_size
=
73 sizeof(struct pci_child_platdata
),