mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-20 17:08:52 +09:00
![Simon Glass](/assets/img/avatar_default.png)
At present this method uses a non-const udevice pointer, but the call should not modify the device. Use a const pointer. Signed-off-by: Simon Glass <sjg@chromium.org>
132 lines
2.9 KiB
C
132 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (c) 2014 Google, Inc
|
|
* Written by Simon Glass <sjg@chromium.org>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <fdtdec.h>
|
|
#include <linux/libfdt.h>
|
|
#include <pci.h>
|
|
#include <dm/lists.h>
|
|
|
|
struct sandbox_pci_emul_priv {
|
|
int dev_count;
|
|
};
|
|
|
|
int sandbox_pci_get_emul(const struct udevice *bus, pci_dev_t find_devfn,
|
|
struct udevice **containerp, struct udevice **emulp)
|
|
{
|
|
struct pci_emul_uc_priv *upriv;
|
|
struct udevice *dev;
|
|
int ret;
|
|
|
|
*containerp = NULL;
|
|
ret = pci_bus_find_devfn(bus, PCI_MASK_BUS(find_devfn), &dev);
|
|
if (ret) {
|
|
debug("%s: Could not find emulator for dev %x\n", __func__,
|
|
find_devfn);
|
|
return ret;
|
|
}
|
|
*containerp = dev;
|
|
|
|
ret = uclass_get_device_by_phandle(UCLASS_PCI_EMUL, dev, "sandbox,emul",
|
|
emulp);
|
|
if (!ret) {
|
|
upriv = dev_get_uclass_priv(*emulp);
|
|
|
|
upriv->client = dev;
|
|
} else if (device_get_uclass_id(dev) != UCLASS_PCI_GENERIC) {
|
|
/*
|
|
* See commit 4345998ae9df,
|
|
* "pci: sandbox: Support dynamically binding device driver"
|
|
*/
|
|
*emulp = dev;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int sandbox_pci_get_client(struct udevice *emul, struct udevice **devp)
|
|
{
|
|
struct pci_emul_uc_priv *upriv = dev_get_uclass_priv(emul);
|
|
|
|
if (!upriv->client)
|
|
return -ENOENT;
|
|
*devp = upriv->client;
|
|
|
|
return 0;
|
|
}
|
|
|
|
uint sandbox_pci_read_bar(u32 barval, int type, uint size)
|
|
{
|
|
u32 result;
|
|
|
|
result = barval;
|
|
if (result == 0xffffffff) {
|
|
if (type == PCI_BASE_ADDRESS_SPACE_IO) {
|
|
result = (~(size - 1) &
|
|
PCI_BASE_ADDRESS_IO_MASK) |
|
|
PCI_BASE_ADDRESS_SPACE_IO;
|
|
} else {
|
|
result = (~(size - 1) &
|
|
PCI_BASE_ADDRESS_MEM_MASK) |
|
|
PCI_BASE_ADDRESS_MEM_TYPE_32;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
static int sandbox_pci_emul_post_probe(struct udevice *dev)
|
|
{
|
|
struct sandbox_pci_emul_priv *priv = dev->uclass->priv;
|
|
|
|
priv->dev_count++;
|
|
sandbox_set_enable_pci_map(true);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sandbox_pci_emul_pre_remove(struct udevice *dev)
|
|
{
|
|
struct sandbox_pci_emul_priv *priv = dev->uclass->priv;
|
|
|
|
priv->dev_count--;
|
|
sandbox_set_enable_pci_map(priv->dev_count > 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
UCLASS_DRIVER(pci_emul) = {
|
|
.id = UCLASS_PCI_EMUL,
|
|
.name = "pci_emul",
|
|
.post_probe = sandbox_pci_emul_post_probe,
|
|
.pre_remove = sandbox_pci_emul_pre_remove,
|
|
.priv_auto_alloc_size = sizeof(struct sandbox_pci_emul_priv),
|
|
.per_device_auto_alloc_size = sizeof(struct pci_emul_uc_priv),
|
|
};
|
|
|
|
/*
|
|
* This uclass is a child of the pci bus. Its platdata is not defined here so
|
|
* is defined by its parent, UCLASS_PCI, which uses struct pci_child_platdata.
|
|
* See per_child_platdata_auto_alloc_size in UCLASS_DRIVER(pci).
|
|
*/
|
|
UCLASS_DRIVER(pci_emul_parent) = {
|
|
.id = UCLASS_PCI_EMUL_PARENT,
|
|
.name = "pci_emul_parent",
|
|
.post_bind = dm_scan_fdt_dev,
|
|
};
|
|
|
|
static const struct udevice_id pci_emul_parent_ids[] = {
|
|
{ .compatible = "sandbox,pci-emul-parent" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(pci_emul_parent_drv) = {
|
|
.name = "pci_emul_parent_drv",
|
|
.id = UCLASS_PCI_EMUL_PARENT,
|
|
.of_match = pci_emul_parent_ids,
|
|
};
|