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68a594774e
New ThunderX firmware incorporates modified DTB that presents different device hierarchy. In the new device tree, MDIO devices are below two additional buses that oddly hang on PCI bridge. Obtained from: Semihalf Sponsored by: Cavium Differential Revision: https://reviews.freebsd.org/D5069
112 lines
3.2 KiB
C
112 lines
3.2 KiB
C
/*-
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* Copyright (c) 2015 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Semihalf under
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* the sponsorship of the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/* Common PCIe functions for Cavium Thunder SOC */
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <sys/bus.h>
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#include <sys/rman.h>
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#include <machine/bus.h>
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#include <machine/cpu.h>
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#include <machine/intr.h>
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#include "thunder_pcie_common.h"
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MALLOC_DEFINE(M_THUNDER_PCIE, "Thunder PCIe driver", "Thunder PCIe driver memory");
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uint32_t
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range_addr_is_pci(struct pcie_range *ranges, uint64_t addr, uint64_t size)
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{
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struct pcie_range *r;
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int tuple;
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for (tuple = 0; tuple < RANGES_TUPLES_MAX; tuple++) {
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r = &ranges[tuple];
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if (addr >= r->pci_base &&
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addr < (r->pci_base + r->size) &&
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size < r->size) {
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/* Address is within PCI range */
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return (1);
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}
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}
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/* Address is outside PCI range */
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return (0);
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}
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uint32_t
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range_addr_is_phys(struct pcie_range *ranges, uint64_t addr, uint64_t size)
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{
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struct pcie_range *r;
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int tuple;
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for (tuple = 0; tuple < RANGES_TUPLES_MAX; tuple++) {
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r = &ranges[tuple];
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if (addr >= r->phys_base &&
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addr < (r->phys_base + r->size) &&
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size < r->size) {
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/* Address is within Physical range */
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return (1);
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}
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}
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/* Address is outside Physical range */
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return (0);
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}
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uint64_t
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range_addr_pci_to_phys(struct pcie_range *ranges, uint64_t pci_addr)
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{
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struct pcie_range *r;
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uint64_t offset;
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int tuple;
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/* Find physical address corresponding to given bus address */
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for (tuple = 0; tuple < RANGES_TUPLES_MAX; tuple++) {
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r = &ranges[tuple];
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if (pci_addr >= r->pci_base &&
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pci_addr < (r->pci_base + r->size)) {
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/* Given pci addr is in this range.
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* Translate bus addr to phys addr.
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*/
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offset = pci_addr - r->pci_base;
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return (r->phys_base + offset);
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}
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}
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return (0);
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}
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