cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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fdomain_cs.c (2568B)

      1// SPDX-License-Identifier: (GPL-2.0 OR MPL-1.1)
      2/*
      3 * Driver for Future Domain-compatible PCMCIA SCSI cards
      4 * Copyright 2019 Ondrej Zary
      5 *
      6 * The initial developer of the original code is David A. Hinds
      7 * <dahinds@users.sourceforge.net>.  Portions created by David A. Hinds
      8 * are Copyright (C) 1999 David A. Hinds.  All Rights Reserved.
      9 */
     10
     11#include <linux/module.h>
     12#include <linux/init.h>
     13#include <scsi/scsi_host.h>
     14#include <pcmcia/cistpl.h>
     15#include <pcmcia/ds.h>
     16#include "fdomain.h"
     17
     18MODULE_AUTHOR("Ondrej Zary, David Hinds");
     19MODULE_DESCRIPTION("Future Domain PCMCIA SCSI driver");
     20MODULE_LICENSE("Dual MPL/GPL");
     21
     22static int fdomain_config_check(struct pcmcia_device *p_dev, void *priv_data)
     23{
     24	p_dev->io_lines = 10;
     25	p_dev->resource[0]->end = FDOMAIN_REGION_SIZE;
     26	p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH;
     27	p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
     28	return pcmcia_request_io(p_dev);
     29}
     30
     31static int fdomain_probe(struct pcmcia_device *link)
     32{
     33	int ret;
     34	struct Scsi_Host *sh;
     35
     36	link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO;
     37	link->config_regs = PRESENT_OPTION;
     38
     39	ret = pcmcia_loop_config(link, fdomain_config_check, NULL);
     40	if (ret)
     41		return ret;
     42
     43	ret = pcmcia_enable_device(link);
     44	if (ret)
     45		goto fail_disable;
     46
     47	if (!request_region(link->resource[0]->start, FDOMAIN_REGION_SIZE,
     48			    "fdomain_cs")) {
     49		ret = -EBUSY;
     50		goto fail_disable;
     51	}
     52
     53	sh = fdomain_create(link->resource[0]->start, link->irq, 7, &link->dev);
     54	if (!sh) {
     55		dev_err(&link->dev, "Controller initialization failed");
     56		ret = -ENODEV;
     57		goto fail_release;
     58	}
     59
     60	link->priv = sh;
     61
     62	return 0;
     63
     64fail_release:
     65	release_region(link->resource[0]->start, FDOMAIN_REGION_SIZE);
     66fail_disable:
     67	pcmcia_disable_device(link);
     68	return ret;
     69}
     70
     71static void fdomain_remove(struct pcmcia_device *link)
     72{
     73	fdomain_destroy(link->priv);
     74	release_region(link->resource[0]->start, FDOMAIN_REGION_SIZE);
     75	pcmcia_disable_device(link);
     76}
     77
     78static const struct pcmcia_device_id fdomain_ids[] = {
     79	PCMCIA_DEVICE_PROD_ID12("IBM Corp.", "SCSI PCMCIA Card", 0xe3736c88,
     80				0x859cad20),
     81	PCMCIA_DEVICE_PROD_ID1("SCSI PCMCIA Adapter Card", 0x8dacb57e),
     82	PCMCIA_DEVICE_PROD_ID12(" SIMPLE TECHNOLOGY Corporation",
     83				"SCSI PCMCIA Credit Card Controller",
     84				0x182bdafe, 0xc80d106f),
     85	PCMCIA_DEVICE_NULL,
     86};
     87MODULE_DEVICE_TABLE(pcmcia, fdomain_ids);
     88
     89static struct pcmcia_driver fdomain_cs_driver = {
     90	.owner		= THIS_MODULE,
     91	.name		= "fdomain_cs",
     92	.probe		= fdomain_probe,
     93	.remove		= fdomain_remove,
     94	.id_table       = fdomain_ids,
     95};
     96
     97module_pcmcia_driver(fdomain_cs_driver);