mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-23 11:33:32 +00:00
eb18742575
barno was mistakely readed from the target structure,
resulting in undefined behavious depending on the previous memory
content. fix that.
Fixes: bb41333782 ("pci_ep: add pci endpoint sandbox driver")
Signed-off-by: Ramon Fried <rfried.dev@gmail.com>
[trini: Drop unused bar_idx]
Signed-off-by: Tom Rini <trini@konsulko.com>
179 lines
3.5 KiB
C
179 lines
3.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (c) 2019 Ramon Fried <ramon.fried@gmail.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <errno.h>
|
|
#include <pci.h>
|
|
#include <pci_ep.h>
|
|
#include <asm/test.h>
|
|
|
|
/**
|
|
* struct sandbox_pci_ep_priv - private data for driver
|
|
* @hdr: Stores the EP device header
|
|
* @msix: required MSIx count;
|
|
* @msi: required MSI count;
|
|
*/
|
|
struct sandbox_pci_ep_priv {
|
|
struct pci_ep_header hdr;
|
|
struct pci_bar bars[6];
|
|
int msix;
|
|
int msi;
|
|
int irq_count;
|
|
};
|
|
|
|
/* Method exported for testing purposes */
|
|
int sandbox_get_pci_ep_irq_count(struct udevice *dev)
|
|
{
|
|
struct sandbox_pci_ep_priv *priv = dev_get_priv(dev);
|
|
|
|
return priv->irq_count;
|
|
}
|
|
|
|
static const struct udevice_id sandbox_pci_ep_ids[] = {
|
|
{ .compatible = "sandbox,pci_ep" },
|
|
{ }
|
|
};
|
|
|
|
static int sandbox_write_header(struct udevice *dev, uint fn,
|
|
struct pci_ep_header *hdr)
|
|
{
|
|
struct sandbox_pci_ep_priv *priv = dev_get_priv(dev);
|
|
|
|
if (fn > 0)
|
|
return -ENODEV;
|
|
|
|
memcpy(&priv->hdr, hdr, sizeof(*hdr));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sandbox_read_header(struct udevice *dev, uint fn,
|
|
struct pci_ep_header *hdr)
|
|
{
|
|
struct sandbox_pci_ep_priv *priv = dev_get_priv(dev);
|
|
|
|
if (fn > 0)
|
|
return -ENODEV;
|
|
|
|
memcpy(hdr, &priv->hdr, sizeof(*hdr));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sandbox_set_bar(struct udevice *dev, uint fn,
|
|
struct pci_bar *ep_bar)
|
|
{
|
|
struct sandbox_pci_ep_priv *priv = dev_get_priv(dev);
|
|
int bar_idx;
|
|
|
|
if (fn > 0)
|
|
return -ENODEV;
|
|
|
|
bar_idx = ep_bar->barno;
|
|
|
|
memcpy(&priv->bars[bar_idx], ep_bar, sizeof(*ep_bar));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sandbox_read_bar(struct udevice *dev, uint fn,
|
|
struct pci_bar *ep_bar, enum pci_barno barno)
|
|
{
|
|
struct sandbox_pci_ep_priv *priv = dev_get_priv(dev);
|
|
|
|
if (fn > 0)
|
|
return -ENODEV;
|
|
|
|
memcpy(ep_bar, &priv->bars[barno], sizeof(*ep_bar));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sandbox_set_msi(struct udevice *dev, uint fn, uint interrupts)
|
|
{
|
|
struct sandbox_pci_ep_priv *priv = dev_get_priv(dev);
|
|
|
|
if (fn > 0)
|
|
return -ENODEV;
|
|
|
|
priv->msi = interrupts;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sandbox_get_msi(struct udevice *dev, uint fn)
|
|
{
|
|
struct sandbox_pci_ep_priv *priv = dev_get_priv(dev);
|
|
|
|
if (fn > 0)
|
|
return -ENODEV;
|
|
|
|
return priv->msi;
|
|
}
|
|
|
|
static int sandbox_set_msix(struct udevice *dev, uint fn, uint interrupts)
|
|
{
|
|
struct sandbox_pci_ep_priv *priv = dev_get_priv(dev);
|
|
|
|
if (fn > 0)
|
|
return -ENODEV;
|
|
|
|
priv->msix = interrupts;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sandbox_get_msix(struct udevice *dev, uint fn)
|
|
{
|
|
struct sandbox_pci_ep_priv *priv = dev_get_priv(dev);
|
|
|
|
if (fn > 0)
|
|
return -ENODEV;
|
|
|
|
return priv->msix;
|
|
}
|
|
|
|
static int sandbox_raise_irq(struct udevice *dev, uint fn,
|
|
enum pci_ep_irq_type type, uint interrupt_num)
|
|
{
|
|
struct sandbox_pci_ep_priv *priv = dev_get_priv(dev);
|
|
|
|
if (fn > 0)
|
|
return -ENODEV;
|
|
|
|
priv->irq_count++;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int sandbox_pci_ep_probe(struct udevice *dev)
|
|
{
|
|
struct sandbox_pci_ep_priv *priv = dev_get_priv(dev);
|
|
|
|
memset(priv, 0, sizeof(*priv));
|
|
return 0;
|
|
}
|
|
|
|
static struct pci_ep_ops sandbox_pci_ep_ops = {
|
|
.write_header = sandbox_write_header,
|
|
.read_header = sandbox_read_header,
|
|
.set_bar = sandbox_set_bar,
|
|
.read_bar = sandbox_read_bar,
|
|
.set_msi = sandbox_set_msi,
|
|
.get_msi = sandbox_get_msi,
|
|
.set_msix = sandbox_set_msix,
|
|
.get_msix = sandbox_get_msix,
|
|
.raise_irq = sandbox_raise_irq,
|
|
};
|
|
|
|
U_BOOT_DRIVER(pci_ep_sandbox) = {
|
|
.name = "pci_ep_sandbox",
|
|
.id = UCLASS_PCI_EP,
|
|
.of_match = sandbox_pci_ep_ids,
|
|
.probe = sandbox_pci_ep_probe,
|
|
.ops = &sandbox_pci_ep_ops,
|
|
.priv_auto_alloc_size = sizeof(struct sandbox_pci_ep_priv),
|
|
};
|