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Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
105 lines
2.5 KiB
C
105 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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** hppb.c:
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** HP-PB bus driver for the NOVA and K-Class systems.
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**
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** (c) Copyright 2002 Ryan Bradetich
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** (c) Copyright 2002 Hewlett-Packard Company
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**
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**
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*/
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#include <linux/types.h>
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#include <linux/init.h>
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#include <linux/mm.h>
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#include <linux/slab.h>
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#include <linux/dma-mapping.h>
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#include <linux/ioport.h>
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#include <asm/io.h>
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#include <asm/hardware.h>
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#include <asm/parisc-device.h>
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#include "iommu.h"
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struct hppb_card {
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unsigned long hpa;
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struct resource mmio_region;
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struct hppb_card *next;
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};
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static struct hppb_card hppb_card_head = {
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.hpa = 0,
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.next = NULL,
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};
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#define IO_IO_LOW offsetof(struct bc_module, io_io_low)
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#define IO_IO_HIGH offsetof(struct bc_module, io_io_high)
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/**
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* hppb_probe - Determine if the hppb driver should claim this device.
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* @dev: The device which has been found
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*
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* Determine if hppb driver should claim this chip (return 0) or not
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* (return 1). If so, initialize the chip and tell other partners in crime
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* they have work to do.
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*/
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static int __init hppb_probe(struct parisc_device *dev)
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{
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int status;
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struct hppb_card *card = &hppb_card_head;
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while(card->next) {
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card = card->next;
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}
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if(card->hpa) {
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card->next = kzalloc(sizeof(struct hppb_card), GFP_KERNEL);
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if(!card->next) {
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printk(KERN_ERR "HP-PB: Unable to allocate memory.\n");
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return 1;
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}
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card = card->next;
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}
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printk(KERN_INFO "Found GeckoBoa at 0x%llx\n",
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(unsigned long long) dev->hpa.start);
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card->hpa = dev->hpa.start;
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card->mmio_region.name = "HP-PB Bus";
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card->mmio_region.flags = IORESOURCE_MEM;
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card->mmio_region.start = gsc_readl(dev->hpa.start + IO_IO_LOW);
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card->mmio_region.end = gsc_readl(dev->hpa.start + IO_IO_HIGH) - 1;
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status = ccio_request_resource(dev, &card->mmio_region);
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if(status < 0) {
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printk(KERN_ERR "%s: failed to claim HP-PB bus space (%pR)\n",
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__FILE__, &card->mmio_region);
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}
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return 0;
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}
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static const struct parisc_device_id hppb_tbl[] __initconst = {
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{ HPHW_BCPORT, HVERSION_REV_ANY_ID, 0x500, 0xc }, /* E25 and K */
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{ HPHW_BCPORT, 0x0, 0x501, 0xc }, /* E35 */
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{ HPHW_BCPORT, 0x0, 0x502, 0xc }, /* E45 */
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{ HPHW_BCPORT, 0x0, 0x503, 0xc }, /* E55 */
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{ 0, }
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};
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static struct parisc_driver hppb_driver __refdata = {
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.name = "gecko_boa",
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.id_table = hppb_tbl,
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.probe = hppb_probe,
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};
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/**
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* hppb_init - HP-PB bus initialization procedure.
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*
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* Register this driver.
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*/
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void __init hppb_init(void)
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{
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register_parisc_driver(&hppb_driver);
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}
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