mirror of
https://github.com/smaeul/u-boot.git
synced 2025-11-04 05:50:17 +00:00
2635e3b50f
Add a mask parameter to control the lookup of the PCI region from which the mapping can be made. Signed-off-by: Andrew Scull <ascull@google.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
127 lines
2.6 KiB
C
127 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (c) 2015, Google, Inc
|
|
* Written by Simon Glass <sjg@chromium.org>
|
|
* All rights reserved.
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <dm/device_compat.h>
|
|
#include <init.h>
|
|
#include <log.h>
|
|
#include <pci.h>
|
|
#include <reset.h>
|
|
#include <usb.h>
|
|
#include <usb/xhci.h>
|
|
|
|
struct xhci_pci_plat {
|
|
struct reset_ctl reset;
|
|
};
|
|
|
|
static int xhci_pci_init(struct udevice *dev, struct xhci_hccr **ret_hccr,
|
|
struct xhci_hcor **ret_hcor)
|
|
{
|
|
struct xhci_hccr *hccr;
|
|
struct xhci_hcor *hcor;
|
|
u32 cmd;
|
|
|
|
hccr = (struct xhci_hccr *)dm_pci_map_bar(dev,
|
|
PCI_BASE_ADDRESS_0, 0, 0, PCI_REGION_TYPE,
|
|
PCI_REGION_MEM);
|
|
if (!hccr) {
|
|
printf("xhci-pci init cannot map PCI mem bar\n");
|
|
return -EIO;
|
|
}
|
|
|
|
hcor = (struct xhci_hcor *)((uintptr_t) hccr +
|
|
HC_LENGTH(xhci_readl(&hccr->cr_capbase)));
|
|
|
|
debug("XHCI-PCI init hccr %p and hcor %p hc_length %d\n",
|
|
hccr, hcor, (u32)HC_LENGTH(xhci_readl(&hccr->cr_capbase)));
|
|
|
|
*ret_hccr = hccr;
|
|
*ret_hcor = hcor;
|
|
|
|
/* enable busmaster */
|
|
dm_pci_read_config32(dev, PCI_COMMAND, &cmd);
|
|
cmd |= PCI_COMMAND_MASTER;
|
|
dm_pci_write_config32(dev, PCI_COMMAND, cmd);
|
|
return 0;
|
|
}
|
|
|
|
static int xhci_pci_probe(struct udevice *dev)
|
|
{
|
|
struct xhci_pci_plat *plat = dev_get_plat(dev);
|
|
struct xhci_hccr *hccr;
|
|
struct xhci_hcor *hcor;
|
|
int ret;
|
|
|
|
ret = reset_get_by_index(dev, 0, &plat->reset);
|
|
if (ret && ret != -ENOENT && ret != -ENOTSUPP) {
|
|
dev_err(dev, "failed to get reset\n");
|
|
return ret;
|
|
}
|
|
|
|
if (reset_valid(&plat->reset)) {
|
|
ret = reset_assert(&plat->reset);
|
|
if (ret)
|
|
goto err_reset;
|
|
|
|
ret = reset_deassert(&plat->reset);
|
|
if (ret)
|
|
goto err_reset;
|
|
}
|
|
|
|
ret = xhci_pci_init(dev, &hccr, &hcor);
|
|
if (ret)
|
|
goto err_reset;
|
|
|
|
ret = xhci_register(dev, hccr, hcor);
|
|
if (ret)
|
|
goto err_reset;
|
|
|
|
return 0;
|
|
|
|
err_reset:
|
|
if (reset_valid(&plat->reset))
|
|
reset_free(&plat->reset);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int xhci_pci_remove(struct udevice *dev)
|
|
{
|
|
struct xhci_pci_plat *plat = dev_get_plat(dev);
|
|
|
|
xhci_deregister(dev);
|
|
if (reset_valid(&plat->reset))
|
|
reset_free(&plat->reset);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct udevice_id xhci_pci_ids[] = {
|
|
{ .compatible = "xhci-pci" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(xhci_pci) = {
|
|
.name = "xhci_pci",
|
|
.id = UCLASS_USB,
|
|
.probe = xhci_pci_probe,
|
|
.remove = xhci_pci_remove,
|
|
.of_match = xhci_pci_ids,
|
|
.ops = &xhci_usb_ops,
|
|
.plat_auto = sizeof(struct xhci_pci_plat),
|
|
.priv_auto = sizeof(struct xhci_ctrl),
|
|
.flags = DM_FLAG_OS_PREPARE | DM_FLAG_ALLOC_PRIV_DMA,
|
|
};
|
|
|
|
static struct pci_device_id xhci_pci_supported[] = {
|
|
{ PCI_DEVICE_CLASS(PCI_CLASS_SERIAL_USB_XHCI, ~0) },
|
|
{},
|
|
};
|
|
|
|
U_BOOT_PCI_DEVICE(xhci_pci, xhci_pci_supported);
|