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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sni_53c710.c (2937B)

      1// SPDX-License-Identifier: GPL-2.0-or-later
      2
      3/* SNI RM driver
      4 *
      5 * Copyright (C) 2001 by James.Bottomley@HansenPartnership.com
      6**-----------------------------------------------------------------------------
      7**
      8**
      9**-----------------------------------------------------------------------------
     10 */
     11
     12/*
     13 * Based on lasi700.c
     14 */
     15
     16#include <linux/kernel.h>
     17#include <linux/module.h>
     18#include <linux/init.h>
     19#include <linux/types.h>
     20#include <linux/slab.h>
     21#include <linux/stat.h>
     22#include <linux/mm.h>
     23#include <linux/blkdev.h>
     24#include <linux/sched.h>
     25#include <linux/ioport.h>
     26#include <linux/dma-mapping.h>
     27#include <linux/platform_device.h>
     28
     29#include <asm/page.h>
     30#include <asm/irq.h>
     31#include <asm/delay.h>
     32
     33#include <scsi/scsi_host.h>
     34#include <scsi/scsi_device.h>
     35#include <scsi/scsi_transport.h>
     36#include <scsi/scsi_transport_spi.h>
     37
     38#include "53c700.h"
     39
     40MODULE_AUTHOR("Thomas Bogendörfer");
     41MODULE_DESCRIPTION("SNI RM 53c710 SCSI Driver");
     42MODULE_LICENSE("GPL");
     43MODULE_ALIAS("platform:snirm_53c710");
     44
     45#define SNIRM710_CLOCK	32
     46
     47static struct scsi_host_template snirm710_template = {
     48	.name		= "SNI RM SCSI 53c710",
     49	.proc_name	= "snirm_53c710",
     50	.this_id	= 7,
     51	.module		= THIS_MODULE,
     52};
     53
     54static int snirm710_probe(struct platform_device *dev)
     55{
     56	unsigned long base;
     57	struct NCR_700_Host_Parameters *hostdata;
     58	struct Scsi_Host *host;
     59	struct  resource *res;
     60	int rc;
     61
     62	res = platform_get_resource(dev, IORESOURCE_MEM, 0);
     63	if (!res)
     64		return -ENODEV;
     65
     66	base = res->start;
     67	hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL);
     68	if (!hostdata)
     69		return -ENOMEM;
     70
     71	hostdata->dev = &dev->dev;
     72	dma_set_mask(&dev->dev, DMA_BIT_MASK(32));
     73	hostdata->base = ioremap(base, 0x100);
     74	hostdata->differential = 0;
     75
     76	hostdata->clock = SNIRM710_CLOCK;
     77	hostdata->force_le_on_be = 1;
     78	hostdata->chip710 = 1;
     79	hostdata->burst_length = 4;
     80
     81	host = NCR_700_detect(&snirm710_template, hostdata, &dev->dev);
     82	if (!host)
     83		goto out_kfree;
     84	host->this_id = 7;
     85	host->base = base;
     86	host->irq = rc = platform_get_irq(dev, 0);
     87	if (rc < 0)
     88		goto out_put_host;
     89	if(request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "snirm710", host)) {
     90		printk(KERN_ERR "snirm710: request_irq failed!\n");
     91		goto out_put_host;
     92	}
     93
     94	dev_set_drvdata(&dev->dev, host);
     95	scsi_scan_host(host);
     96
     97	return 0;
     98
     99 out_put_host:
    100	scsi_host_put(host);
    101 out_kfree:
    102	iounmap(hostdata->base);
    103	kfree(hostdata);
    104	return -ENODEV;
    105}
    106
    107static int snirm710_driver_remove(struct platform_device *dev)
    108{
    109	struct Scsi_Host *host = dev_get_drvdata(&dev->dev);
    110	struct NCR_700_Host_Parameters *hostdata =
    111		(struct NCR_700_Host_Parameters *)host->hostdata[0];
    112
    113	scsi_remove_host(host);
    114	NCR_700_release(host);
    115	free_irq(host->irq, host);
    116	iounmap(hostdata->base);
    117	kfree(hostdata);
    118
    119	return 0;
    120}
    121
    122static struct platform_driver snirm710_driver = {
    123	.probe	= snirm710_probe,
    124	.remove	= snirm710_driver_remove,
    125	.driver	= {
    126		.name	= "snirm_53c710",
    127	},
    128};
    129module_platform_driver(snirm710_driver);