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1// SPDX-License-Identifier: GPL-2.0-or-later2 3/* PARISC LASI driver for the 53c700 chip4 *5 * Copyright (C) 2001 by James.Bottomley@HansenPartnership.com6**-----------------------------------------------------------------------------7** 8**9**-----------------------------------------------------------------------------10 */11 12/*13 * Many thanks to Richard Hirst <rhirst@linuxcare.com> for patiently14 * debugging this driver on the parisc architecture and suggesting15 * many improvements and bug fixes.16 *17 * Thanks also go to Linuxcare Inc. for providing several PARISC18 * machines for me to debug the driver on.19 */20 21#include <linux/kernel.h>22#include <linux/module.h>23#include <linux/init.h>24#include <linux/types.h>25#include <linux/stat.h>26#include <linux/mm.h>27#include <linux/blkdev.h>28#include <linux/ioport.h>29#include <linux/dma-mapping.h>30#include <linux/slab.h>31 32#include <asm/page.h>33#include <asm/irq.h>34#include <asm/hardware.h>35#include <asm/parisc-device.h>36#include <asm/delay.h>37 38#include <scsi/scsi_host.h>39#include <scsi/scsi_device.h>40#include <scsi/scsi_transport.h>41#include <scsi/scsi_transport_spi.h>42 43#include "53c700.h"44 45MODULE_AUTHOR("James Bottomley");46MODULE_DESCRIPTION("lasi700 SCSI Driver");47MODULE_LICENSE("GPL");48 49#define LASI_700_SVERSION 0x0007150#define LASI_710_SVERSION 0x0008251 52#define LASI700_ID_TABLE { \53 .hw_type = HPHW_FIO, \54 .sversion = LASI_700_SVERSION, \55 .hversion = HVERSION_ANY_ID, \56 .hversion_rev = HVERSION_REV_ANY_ID, \57}58 59#define LASI710_ID_TABLE { \60 .hw_type = HPHW_FIO, \61 .sversion = LASI_710_SVERSION, \62 .hversion = HVERSION_ANY_ID, \63 .hversion_rev = HVERSION_REV_ANY_ID, \64}65 66#define LASI700_CLOCK 2567#define LASI710_CLOCK 4068#define LASI_SCSI_CORE_OFFSET 0x10069 70static const struct parisc_device_id lasi700_ids[] __initconst = {71 LASI700_ID_TABLE,72 LASI710_ID_TABLE,73 { 0 }74};75 76static struct scsi_host_template lasi700_template = {77 .name = "LASI SCSI 53c700",78 .proc_name = "lasi700",79 .this_id = 7,80 .module = THIS_MODULE,81};82MODULE_DEVICE_TABLE(parisc, lasi700_ids);83 84static int __init85lasi700_probe(struct parisc_device *dev)86{87 unsigned long base = dev->hpa.start + LASI_SCSI_CORE_OFFSET;88 struct NCR_700_Host_Parameters *hostdata;89 struct Scsi_Host *host;90 91 hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL);92 if (!hostdata) {93 dev_printk(KERN_ERR, &dev->dev, "Failed to allocate host data\n");94 return -ENOMEM;95 }96 97 hostdata->dev = &dev->dev;98 dma_set_mask(&dev->dev, DMA_BIT_MASK(32));99 hostdata->base = ioremap(base, 0x100);100 hostdata->differential = 0;101 102 if (dev->id.sversion == LASI_700_SVERSION) {103 hostdata->clock = LASI700_CLOCK;104 hostdata->force_le_on_be = 1;105 } else {106 hostdata->clock = LASI710_CLOCK;107 hostdata->force_le_on_be = 0;108 hostdata->chip710 = 1;109 hostdata->dmode_extra = DMODE_FC2;110 hostdata->burst_length = 8;111 }112 113 host = NCR_700_detect(&lasi700_template, hostdata, &dev->dev);114 if (!host)115 goto out_kfree;116 host->this_id = 7;117 host->base = base;118 host->irq = dev->irq;119 if(request_irq(dev->irq, NCR_700_intr, IRQF_SHARED, "lasi700", host)) {120 printk(KERN_ERR "lasi700: request_irq failed!\n");121 goto out_put_host;122 }123 124 dev_set_drvdata(&dev->dev, host);125 scsi_scan_host(host);126 127 return 0;128 129 out_put_host:130 scsi_host_put(host);131 out_kfree:132 iounmap(hostdata->base);133 kfree(hostdata);134 return -ENODEV;135}136 137static void __exit138lasi700_driver_remove(struct parisc_device *dev)139{140 struct Scsi_Host *host = dev_get_drvdata(&dev->dev);141 struct NCR_700_Host_Parameters *hostdata = 142 (struct NCR_700_Host_Parameters *)host->hostdata[0];143 144 scsi_remove_host(host);145 NCR_700_release(host);146 free_irq(host->irq, host);147 iounmap(hostdata->base);148 kfree(hostdata);149}150 151static struct parisc_driver lasi700_driver __refdata = {152 .name = "lasi_scsi",153 .id_table = lasi700_ids,154 .probe = lasi700_probe,155 .remove = __exit_p(lasi700_driver_remove),156};157 158static int __init159lasi700_init(void)160{161 return register_parisc_driver(&lasi700_driver);162}163 164static void __exit165lasi700_exit(void)166{167 unregister_parisc_driver(&lasi700_driver);168}169 170module_init(lasi700_init);171module_exit(lasi700_exit);172