drivers/scsi/sni_53c710.c

0001 // SPDX-License-Identifier: GPL-2.0-or-later
0002
0003 /* SNI RM driver
0004  *
0005  * Copyright (C) 2001 by James.Bottomley@HansenPartnership.com
0006 **-----------------------------------------------------------------------------
0007 **
0008 **
0009 **-----------------------------------------------------------------------------
0010  */
0011
0012 /*
0013  * Based on lasi700.c
0014  */
0015
0016 #include <linux/kernel.h>
0017 #include <linux/module.h>
0018 #include <linux/init.h>
0019 #include <linux/types.h>
0020 #include <linux/slab.h>
0021 #include <linux/stat.h>
0022 #include <linux/mm.h>
0023 #include <linux/blkdev.h>
0024 #include <linux/sched.h>
0025 #include <linux/ioport.h>
0026 #include <linux/dma-mapping.h>
0027 #include <linux/platform_device.h>
0028
0029 #include <asm/page.h>
0030 #include <asm/irq.h>
0031 #include <asm/delay.h>
0032
0033 #include <scsi/scsi_host.h>
0034 #include <scsi/scsi_device.h>
0035 #include <scsi/scsi_transport.h>
0036 #include <scsi/scsi_transport_spi.h>
0037
0038 #include "53c700.h"
0039
0040 MODULE_AUTHOR("Thomas Bogendörfer");
0041 MODULE_DESCRIPTION("SNI RM 53c710 SCSI Driver");
0042 MODULE_LICENSE("GPL");
0043 MODULE_ALIAS("platform:snirm_53c710");
0044
0045 #define SNIRM710_CLOCK  32
0046
0047 static struct scsi_host_template snirm710_template = {
0048     .name       = "SNI RM SCSI 53c710",
0049     .proc_name  = "snirm_53c710",
0050     .this_id    = 7,
0051     .module     = THIS_MODULE,
0052 };
0053
0054 static int snirm710_probe(struct platform_device *dev)
0055 {
0056     unsigned long base;
0057     struct NCR_700_Host_Parameters *hostdata;
0058     struct Scsi_Host *host;
0059     struct  resource *res;
0060     int rc;
0061
0062     res = platform_get_resource(dev, IORESOURCE_MEM, 0);
0063     if (!res)
0064         return -ENODEV;
0065
0066     base = res->start;
0067     hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL);
0068     if (!hostdata)
0069         return -ENOMEM;
0070
0071     hostdata->dev = &dev->dev;
0072     dma_set_mask(&dev->dev, DMA_BIT_MASK(32));
0073     hostdata->base = ioremap(base, 0x100);
0074     hostdata->differential = 0;
0075
0076     hostdata->clock = SNIRM710_CLOCK;
0077     hostdata->force_le_on_be = 1;
0078     hostdata->chip710 = 1;
0079     hostdata->burst_length = 4;
0080
0081     host = NCR_700_detect(&snirm710_template, hostdata, &dev->dev);
0082     if (!host)
0083         goto out_kfree;
0084     host->this_id = 7;
0085     host->base = base;
0086     host->irq = rc = platform_get_irq(dev, 0);
0087     if (rc < 0)
0088         goto out_put_host;
0089     if(request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "snirm710", host)) {
0090         printk(KERN_ERR "snirm710: request_irq failed!\n");
0091         goto out_put_host;
0092     }
0093
0094     dev_set_drvdata(&dev->dev, host);
0095     scsi_scan_host(host);
0096
0097     return 0;
0098
0099  out_put_host:
0100     scsi_host_put(host);
0101  out_kfree:
0102     iounmap(hostdata->base);
0103     kfree(hostdata);
0104     return -ENODEV;
0105 }
0106
0107 static int snirm710_driver_remove(struct platform_device *dev)
0108 {
0109     struct Scsi_Host *host = dev_get_drvdata(&dev->dev);
0110     struct NCR_700_Host_Parameters *hostdata =
0111         (struct NCR_700_Host_Parameters *)host->hostdata[0];
0112
0113     scsi_remove_host(host);
0114     NCR_700_release(host);
0115     free_irq(host->irq, host);
0116     iounmap(hostdata->base);
0117     kfree(hostdata);
0118
0119     return 0;
0120 }
0121
0122 static struct platform_driver snirm710_driver = {
0123     .probe  = snirm710_probe,
0124     .remove = snirm710_driver_remove,
0125     .driver = {
0126         .name   = "snirm_53c710",
0127     },
0128 };
0129 module_platform_driver(snirm710_driver);