/* * Copyright (c) 2014 Google, Inc * Written by Simon Glass <sjg@chromium.org> * * SPDX-License-Identifier: GPL-2.0+ */ #include <common.h> #include <dm.h> #include <fdtdec.h> #include <libfdt.h> #include <pci.h> #include <dm/lists.h> DECLARE_GLOBAL_DATA_PTR; struct sandbox_pci_priv { int dev_count; }; int sandbox_pci_get_emul(struct udevice *bus, pci_dev_t find_devfn, struct udevice **emulp) { struct udevice *dev; int ret; ret = pci_bus_find_devfn(bus, find_devfn, &dev); if (ret) { debug("%s: Could not find emulator for dev %x\n", __func__, find_devfn); return ret; } ret = device_find_first_child(dev, emulp); if (ret) return ret; return *emulp ? 0 : -ENODEV; } static int sandbox_pci_emul_post_probe(struct udevice *dev) { struct sandbox_pci_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_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_priv), };