mirror of
https://github.com/ipxe/ipxe
synced 2026-05-18 10:00:30 +03:00
Michael Brown
81da1a1b6c
Add DT_ROM() and DT_ID() macros following the pattern for PCI_ROM() and PCI_ID(), to allow for the possibility of including devicetree network devices within the "all-drivers" build of iPXE. Signed-off-by: Michael Brown <mcb30@ipxe.org>
132 lines
3.2 KiB
C
132 lines
3.2 KiB
C
/*
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* Copyright (C) 2025 Michael Brown <mbrown@fensystems.co.uk>.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*
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* You can also choose to distribute this program under the terms of
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* the Unmodified Binary Distribution Licence (as given in the file
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* COPYING.UBDL), provided that you have satisfied its requirements.
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*/
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FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <ipxe/timer.h>
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#include <ipxe/devtree.h>
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#include <ipxe/fdt.h>
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#include "dwusb.h"
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/** @file
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*
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* Synopsys DesignWare USB3 host controller driver
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*
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*/
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/**
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* Probe devicetree device
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*
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* @v dt Devicetree device
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* @v offset Starting node offset
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* @ret rc Return status code
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*/
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static int dwusb_probe ( struct dt_device *dt, unsigned int offset ) {
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struct xhci_device *xhci;
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uint32_t gctl;
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int rc;
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/* Allocate and initialise structure */
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xhci = zalloc ( sizeof ( *xhci ) );
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if ( ! xhci ) {
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rc = -ENOMEM;
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goto err_alloc;
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}
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xhci->dev = &dt->dev;
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xhci->dma = &dt->dma;
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/* Map registers */
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xhci->regs = dt_ioremap ( dt, offset, 0, 0 );
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if ( ! xhci->regs ) {
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rc = -ENODEV;
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goto err_ioremap;
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}
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/* Reset via global core control register */
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gctl = readl ( xhci->regs + DWUSB_GCTL );
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writel ( ( gctl | DWUSB_GCTL_RESET ), ( xhci->regs + DWUSB_GCTL ) );
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mdelay ( 100 );
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writel ( gctl, ( xhci->regs + DWUSB_GCTL ) );
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/* Configure as a host controller */
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gctl &= ~DWUSB_GCTL_PRTDIR_MASK;
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gctl |= DWUSB_GCTL_PRTDIR_HOST;
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writel ( gctl, ( xhci->regs + DWUSB_GCTL ) );
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/* Initialise xHCI device */
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xhci_init ( xhci );
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/* Register xHCI device */
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if ( ( rc = xhci_register ( xhci ) ) != 0 ) {
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DBGC ( xhci, "XHCI %s could not register: %s\n",
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xhci->name, strerror ( rc ) );
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goto err_register;
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}
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dt_set_drvdata ( dt, xhci );
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return 0;
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xhci_unregister ( xhci );
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err_register:
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iounmap ( xhci->regs );
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err_ioremap:
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free ( xhci );
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err_alloc:
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return rc;
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}
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/**
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* Remove devicetree device
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*
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* @v dt Devicetree device
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*/
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static void dwusb_remove ( struct dt_device *dt ) {
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struct xhci_device *xhci = dt_get_drvdata ( dt );
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/* Unregister xHCI device */
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xhci_unregister ( xhci );
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/* Unmap registers */
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iounmap ( xhci->regs );
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/* Free device */
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free ( xhci );
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}
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/** DesignWare USB3 compatible model identifiers */
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static const char * dwusb_ids[] = {
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DT_ID ( "snps,dwc3", "DesignWare USB3" ),
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};
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/** DesignWare USB3 devicetree driver */
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struct dt_driver dwusb_driver __dt_driver = {
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.name = "dwusb",
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.ids = dwusb_ids,
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.id_count = ( sizeof ( dwusb_ids ) / sizeof ( dwusb_ids[0] ) ),
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.probe = dwusb_probe,
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.remove = dwusb_remove,
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};
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