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https://github.com/brain-hackers/u-boot-brain
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caa4daa2ae
We use 'priv' for private data but often use 'platdata' for platform data. We can't really use 'pdata' since that is ambiguous (it could mean private or platform data). Rename some of the latter variables to end with 'plat' for consistency. Signed-off-by: Simon Glass <sjg@chromium.org>
133 lines
2.9 KiB
C
133 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2014 Google, Inc
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* Written by Simon Glass <sjg@chromium.org>
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*/
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#include <common.h>
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#include <dm.h>
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#include <fdtdec.h>
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#include <log.h>
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#include <linux/libfdt.h>
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#include <pci.h>
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#include <dm/lists.h>
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struct sandbox_pci_emul_priv {
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int dev_count;
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};
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int sandbox_pci_get_emul(const struct udevice *bus, pci_dev_t find_devfn,
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struct udevice **containerp, struct udevice **emulp)
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{
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struct pci_emul_uc_priv *upriv;
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struct udevice *dev;
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int ret;
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*containerp = NULL;
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ret = pci_bus_find_devfn(bus, PCI_MASK_BUS(find_devfn), &dev);
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if (ret) {
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debug("%s: Could not find emulator for dev %x\n", __func__,
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find_devfn);
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return ret;
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}
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*containerp = dev;
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ret = uclass_get_device_by_phandle(UCLASS_PCI_EMUL, dev, "sandbox,emul",
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emulp);
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if (!ret) {
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upriv = dev_get_uclass_priv(*emulp);
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upriv->client = dev;
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} else if (device_get_uclass_id(dev) != UCLASS_PCI_GENERIC) {
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/*
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* See commit 4345998ae9df,
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* "pci: sandbox: Support dynamically binding device driver"
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*/
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*emulp = dev;
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}
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return 0;
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}
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int sandbox_pci_get_client(struct udevice *emul, struct udevice **devp)
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{
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struct pci_emul_uc_priv *upriv = dev_get_uclass_priv(emul);
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if (!upriv->client)
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return -ENOENT;
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*devp = upriv->client;
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return 0;
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}
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uint sandbox_pci_read_bar(u32 barval, int type, uint size)
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{
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u32 result;
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result = barval;
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if (result == 0xffffffff) {
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if (type == PCI_BASE_ADDRESS_SPACE_IO) {
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result = (~(size - 1) &
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PCI_BASE_ADDRESS_IO_MASK) |
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PCI_BASE_ADDRESS_SPACE_IO;
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} else {
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result = (~(size - 1) &
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PCI_BASE_ADDRESS_MEM_MASK) |
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PCI_BASE_ADDRESS_MEM_TYPE_32;
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}
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}
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return result;
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}
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static int sandbox_pci_emul_post_probe(struct udevice *dev)
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{
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struct sandbox_pci_emul_priv *priv = dev->uclass->priv;
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priv->dev_count++;
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sandbox_set_enable_pci_map(true);
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return 0;
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}
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static int sandbox_pci_emul_pre_remove(struct udevice *dev)
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{
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struct sandbox_pci_emul_priv *priv = dev->uclass->priv;
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priv->dev_count--;
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sandbox_set_enable_pci_map(priv->dev_count > 0);
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return 0;
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}
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UCLASS_DRIVER(pci_emul) = {
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.id = UCLASS_PCI_EMUL,
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.name = "pci_emul",
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.post_probe = sandbox_pci_emul_post_probe,
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.pre_remove = sandbox_pci_emul_pre_remove,
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.priv_auto = sizeof(struct sandbox_pci_emul_priv),
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.per_device_auto = sizeof(struct pci_emul_uc_priv),
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};
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/*
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* This uclass is a child of the pci bus. Its plat is not defined here so
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* is defined by its parent, UCLASS_PCI, which uses struct pci_child_platdata.
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* See per_child_plat_auto in UCLASS_DRIVER(pci).
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*/
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UCLASS_DRIVER(pci_emul_parent) = {
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.id = UCLASS_PCI_EMUL_PARENT,
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.name = "pci_emul_parent",
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.post_bind = dm_scan_fdt_dev,
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};
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static const struct udevice_id pci_emul_parent_ids[] = {
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{ .compatible = "sandbox,pci-emul-parent" },
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{ }
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};
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U_BOOT_DRIVER(pci_emul_parent_drv) = {
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.name = "pci_emul_parent_drv",
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.id = UCLASS_PCI_EMUL_PARENT,
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.of_match = pci_emul_parent_ids,
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};
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