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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aic7770_osm.c (4415B)

      1/*
      2 * Linux driver attachment glue for aic7770 based controllers.
      3 *
      4 * Copyright (c) 2000-2003 Adaptec Inc.
      5 * All rights reserved.
      6 *
      7 * Redistribution and use in source and binary forms, with or without
      8 * modification, are permitted provided that the following conditions
      9 * are met:
     10 * 1. Redistributions of source code must retain the above copyright
     11 *    notice, this list of conditions, and the following disclaimer,
     12 *    without modification.
     13 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
     14 *    substantially similar to the "NO WARRANTY" disclaimer below
     15 *    ("Disclaimer") and any redistribution must be conditioned upon
     16 *    including a substantially similar Disclaimer requirement for further
     17 *    binary redistribution.
     18 * 3. Neither the names of the above-listed copyright holders nor the names
     19 *    of any contributors may be used to endorse or promote products derived
     20 *    from this software without specific prior written permission.
     21 *
     22 * Alternatively, this software may be distributed under the terms of the
     23 * GNU General Public License ("GPL") version 2 as published by the Free
     24 * Software Foundation.
     25 *
     26 * NO WARRANTY
     27 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     28 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     29 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
     30 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     31 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     35 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
     36 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     37 * POSSIBILITY OF SUCH DAMAGES.
     38 *
     39 * $Id: //depot/aic7xxx/linux/drivers/scsi/aic7xxx/aic7770_osm.c#14 $
     40 */
     41
     42#include "aic7xxx_osm.h"
     43
     44#include <linux/device.h>
     45#include <linux/eisa.h>
     46
     47int
     48aic7770_map_registers(struct ahc_softc *ahc, u_int port)
     49{
     50	/*
     51	 * Lock out other contenders for our i/o space.
     52	 */
     53	if (!request_region(port, AHC_EISA_IOSIZE, "aic7xxx"))
     54		return (ENOMEM);
     55	ahc->tag = BUS_SPACE_PIO;
     56	ahc->bsh.ioport = port;
     57	return (0);
     58}
     59
     60int
     61aic7770_map_int(struct ahc_softc *ahc, u_int irq)
     62{
     63	int error;
     64	int shared;
     65
     66	shared = 0;
     67	if ((ahc->flags & AHC_EDGE_INTERRUPT) == 0)
     68		shared = IRQF_SHARED;
     69
     70	error = request_irq(irq, ahc_linux_isr, shared, "aic7xxx", ahc);
     71	if (error == 0)
     72		ahc->platform_data->irq = irq;
     73	
     74	return (-error);
     75}
     76
     77static int
     78aic7770_probe(struct device *dev)
     79{
     80	struct eisa_device *edev = to_eisa_device(dev);
     81	u_int eisaBase = edev->base_addr+AHC_EISA_SLOT_OFFSET;
     82	struct	ahc_softc *ahc;
     83	char	buf[80];
     84	char   *name;
     85	int	error;
     86
     87	sprintf(buf, "ahc_eisa:%d", eisaBase >> 12);
     88	name = kstrdup(buf, GFP_ATOMIC);
     89	if (name == NULL)
     90		return (ENOMEM);
     91	ahc = ahc_alloc(&aic7xxx_driver_template, name);
     92	if (ahc == NULL)
     93		return (ENOMEM);
     94	ahc->dev = dev;
     95	error = aic7770_config(ahc, aic7770_ident_table + edev->id.driver_data,
     96			       eisaBase);
     97	if (error != 0) {
     98		ahc->bsh.ioport = 0;
     99		ahc_free(ahc);
    100		return (error);
    101	}
    102
    103 	dev_set_drvdata(dev, ahc);
    104
    105	error = ahc_linux_register_host(ahc, &aic7xxx_driver_template);
    106	return (error);
    107}
    108
    109static int
    110aic7770_remove(struct device *dev)
    111{
    112	struct ahc_softc *ahc = dev_get_drvdata(dev);
    113	u_long s;
    114
    115	if (ahc->platform_data && ahc->platform_data->host)
    116			scsi_remove_host(ahc->platform_data->host);
    117
    118	ahc_lock(ahc, &s);
    119	ahc_intr_enable(ahc, FALSE);
    120	ahc_unlock(ahc, &s);
    121
    122	ahc_free(ahc);
    123	return 0;
    124}
    125 
    126static struct eisa_device_id aic7770_ids[] = {
    127	{ "ADP7771", 0 }, /* AHA 274x */
    128	{ "ADP7756", 1 }, /* AHA 284x BIOS enabled */
    129	{ "ADP7757", 2 }, /* AHA 284x BIOS disabled */
    130	{ "ADP7782", 3 }, /* AHA 274x Olivetti OEM */
    131	{ "ADP7783", 4 }, /* AHA 274x Olivetti OEM (Differential) */
    132	{ "ADP7770", 5 }, /* AIC7770 generic */
    133	{ "" }
    134};
    135MODULE_DEVICE_TABLE(eisa, aic7770_ids);
    136
    137static struct eisa_driver aic7770_driver = {
    138	.id_table	= aic7770_ids,
    139	.driver = {
    140		.name   = "aic7xxx",
    141		.probe  = aic7770_probe,
    142		.remove = aic7770_remove,
    143	}
    144};
    145  
    146int
    147ahc_linux_eisa_init(void)
    148{
    149	return eisa_driver_register(&aic7770_driver);
    150}
    151  
    152void
    153ahc_linux_eisa_exit(void)
    154{
    155	eisa_driver_unregister(&aic7770_driver);
    156}