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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Detection routine for the NCR53c710 based BVME6000 SCSI Controllers for Linux.4 *5 * Based on work by Alan Hourihane and Kars de Jong6 *7 * Rewritten to use 53c700.c by Richard Hirst <richard@sleepie.demon.co.uk>8 */9 10#include <linux/module.h>11#include <linux/blkdev.h>12#include <linux/device.h>13#include <linux/platform_device.h>14#include <linux/init.h>15#include <linux/interrupt.h>16#include <linux/slab.h>17#include <asm/bvme6000hw.h>18#include <scsi/scsi_host.h>19#include <scsi/scsi_device.h>20#include <scsi/scsi_transport.h>21#include <scsi/scsi_transport_spi.h>22 23#include "53c700.h"24 25MODULE_AUTHOR("Richard Hirst <richard@sleepie.demon.co.uk>");26MODULE_DESCRIPTION("BVME6000 NCR53C710 driver");27MODULE_LICENSE("GPL");28 29static struct scsi_host_template bvme6000_scsi_driver_template = {30 .name = "BVME6000 NCR53c710 SCSI",31 .proc_name = "BVME6000",32 .this_id = 7,33 .module = THIS_MODULE,34};35 36static struct platform_device *bvme6000_scsi_device;37 38static int39bvme6000_probe(struct platform_device *dev)40{41 struct Scsi_Host *host;42 struct NCR_700_Host_Parameters *hostdata;43 44 if (!MACH_IS_BVME6000)45 goto out;46 47 hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);48 if (!hostdata) {49 printk(KERN_ERR "bvme6000-scsi: "50 "Failed to allocate host data\n");51 goto out;52 }53 54 /* Fill in the required pieces of hostdata */55 hostdata->base = (void __iomem *)BVME_NCR53C710_BASE;56 hostdata->clock = 40; /* XXX - depends on the CPU clock! */57 hostdata->chip710 = 1;58 hostdata->dmode_extra = DMODE_FC2;59 hostdata->dcntl_extra = EA_710;60 hostdata->ctest7_extra = CTEST7_TT1;61 62 /* and register the chip */63 host = NCR_700_detect(&bvme6000_scsi_driver_template, hostdata,64 &dev->dev);65 if (!host) {66 printk(KERN_ERR "bvme6000-scsi: No host detected; "67 "board configuration problem?\n");68 goto out_free;69 }70 host->base = BVME_NCR53C710_BASE;71 host->this_id = 7;72 host->irq = BVME_IRQ_SCSI;73 if (request_irq(BVME_IRQ_SCSI, NCR_700_intr, 0, "bvme6000-scsi",74 host)) {75 printk(KERN_ERR "bvme6000-scsi: request_irq failed\n");76 goto out_put_host;77 }78 79 platform_set_drvdata(dev, host);80 scsi_scan_host(host);81 82 return 0;83 84 out_put_host:85 scsi_host_put(host);86 out_free:87 kfree(hostdata);88 out:89 return -ENODEV;90}91 92static void93bvme6000_device_remove(struct platform_device *dev)94{95 struct Scsi_Host *host = platform_get_drvdata(dev);96 struct NCR_700_Host_Parameters *hostdata = shost_priv(host);97 98 scsi_remove_host(host);99 NCR_700_release(host);100 kfree(hostdata);101 free_irq(host->irq, host);102}103 104static struct platform_driver bvme6000_scsi_driver = {105 .driver = {106 .name = "bvme6000-scsi",107 },108 .probe = bvme6000_probe,109 .remove_new = bvme6000_device_remove,110};111 112static int __init bvme6000_scsi_init(void)113{114 int err;115 116 err = platform_driver_register(&bvme6000_scsi_driver);117 if (err)118 return err;119 120 bvme6000_scsi_device = platform_device_register_simple("bvme6000-scsi",121 -1, NULL, 0);122 if (IS_ERR(bvme6000_scsi_device)) {123 platform_driver_unregister(&bvme6000_scsi_driver);124 return PTR_ERR(bvme6000_scsi_device);125 }126 127 return 0;128}129 130static void __exit bvme6000_scsi_exit(void)131{132 platform_device_unregister(bvme6000_scsi_device);133 platform_driver_unregister(&bvme6000_scsi_driver);134}135 136module_init(bvme6000_scsi_init);137module_exit(bvme6000_scsi_exit);138