1// SPDX-License-Identifier: GPL-2.0-or-later 2/* -*- mode: c; c-basic-offset: 8 -*- */ 3 4/* PARISC LASI driver for the 53c700 chip 5 * 6 * Copyright (C) 2001 by James.Bottomley@HansenPartnership.com 7**----------------------------------------------------------------------------- 8** 9** 10**----------------------------------------------------------------------------- 11 */ 12 13/* 14 * Many thanks to Richard Hirst <rhirst@linuxcare.com> for patiently 15 * debugging this driver on the parisc architecture and suggesting 16 * many improvements and bug fixes. 17 * 18 * Thanks also go to Linuxcare Inc. for providing several PARISC 19 * machines for me to debug the driver on. 20 */ 21 22#include <linux/kernel.h> 23#include <linux/module.h> 24#include <linux/init.h> 25#include <linux/types.h> 26#include <linux/stat.h> 27#include <linux/mm.h> 28#include <linux/blkdev.h> 29#include <linux/ioport.h> 30#include <linux/dma-mapping.h> 31#include <linux/slab.h> 32 33#include <asm/page.h> 34#include <asm/irq.h> 35#include <asm/hardware.h> 36#include <asm/parisc-device.h> 37#include <asm/delay.h> 38 39#include <scsi/scsi_host.h> 40#include <scsi/scsi_device.h> 41#include <scsi/scsi_transport.h> 42#include <scsi/scsi_transport_spi.h> 43 44#include "53c700.h" 45 46MODULE_AUTHOR("James Bottomley"); 47MODULE_DESCRIPTION("lasi700 SCSI Driver"); 48MODULE_LICENSE("GPL"); 49 50#define LASI_700_SVERSION 0x00071 51#define LASI_710_SVERSION 0x00082 52 53#define LASI700_ID_TABLE { \ 54 .hw_type = HPHW_FIO, \ 55 .sversion = LASI_700_SVERSION, \ 56 .hversion = HVERSION_ANY_ID, \ 57 .hversion_rev = HVERSION_REV_ANY_ID, \ 58} 59 60#define LASI710_ID_TABLE { \ 61 .hw_type = HPHW_FIO, \ 62 .sversion = LASI_710_SVERSION, \ 63 .hversion = HVERSION_ANY_ID, \ 64 .hversion_rev = HVERSION_REV_ANY_ID, \ 65} 66 67#define LASI700_CLOCK 25 68#define LASI710_CLOCK 40 69#define LASI_SCSI_CORE_OFFSET 0x100 70 71static const struct parisc_device_id lasi700_ids[] __initconst = { 72 LASI700_ID_TABLE, 73 LASI710_ID_TABLE, 74 { 0 } 75}; 76 77static struct scsi_host_template lasi700_template = { 78 .name = "LASI SCSI 53c700", 79 .proc_name = "lasi700", 80 .this_id = 7, 81 .module = THIS_MODULE, 82}; 83MODULE_DEVICE_TABLE(parisc, lasi700_ids); 84 85static int __init 86lasi700_probe(struct parisc_device *dev) 87{ 88 unsigned long base = dev->hpa.start + LASI_SCSI_CORE_OFFSET; 89 struct NCR_700_Host_Parameters *hostdata; 90 struct Scsi_Host *host; 91 92 hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL); 93 if (!hostdata) { 94 dev_printk(KERN_ERR, &dev->dev, "Failed to allocate host data\n"); 95 return -ENOMEM; 96 } 97 98 hostdata->dev = &dev->dev; 99 dma_set_mask(&dev->dev, DMA_BIT_MASK(32)); 100 hostdata->base = ioremap(base, 0x100); 101 hostdata->differential = 0; 102 103 if (dev->id.sversion == LASI_700_SVERSION) { 104 hostdata->clock = LASI700_CLOCK; 105 hostdata->force_le_on_be = 1; 106 } else { 107 hostdata->clock = LASI710_CLOCK; 108 hostdata->force_le_on_be = 0; 109 hostdata->chip710 = 1; 110 hostdata->dmode_extra = DMODE_FC2; 111 hostdata->burst_length = 8; 112 } 113 114 host = NCR_700_detect(&lasi700_template, hostdata, &dev->dev); 115 if (!host) 116 goto out_kfree; 117 host->this_id = 7; 118 host->base = base; 119 host->irq = dev->irq; 120 if(request_irq(dev->irq, NCR_700_intr, IRQF_SHARED, "lasi700", host)) { 121 printk(KERN_ERR "lasi700: request_irq failed!\n"); 122 goto out_put_host; 123 } 124 125 dev_set_drvdata(&dev->dev, host); 126 scsi_scan_host(host); 127 128 return 0; 129 130 out_put_host: 131 scsi_host_put(host); 132 out_kfree: 133 iounmap(hostdata->base); 134 kfree(hostdata); 135 return -ENODEV; 136} 137 138static int __exit 139lasi700_driver_remove(struct parisc_device *dev) 140{ 141 struct Scsi_Host *host = dev_get_drvdata(&dev->dev); 142 struct NCR_700_Host_Parameters *hostdata = 143 (struct NCR_700_Host_Parameters *)host->hostdata[0]; 144 145 scsi_remove_host(host); 146 NCR_700_release(host); 147 free_irq(host->irq, host); 148 iounmap(hostdata->base); 149 kfree(hostdata); 150 151 return 0; 152} 153 154static struct parisc_driver lasi700_driver __refdata = { 155 .name = "lasi_scsi", 156 .id_table = lasi700_ids, 157 .probe = lasi700_probe, 158 .remove = __exit_p(lasi700_driver_remove), 159}; 160 161static int __init 162lasi700_init(void) 163{ 164 return register_parisc_driver(&lasi700_driver); 165} 166 167static void __exit 168lasi700_exit(void) 169{ 170 unregister_parisc_driver(&lasi700_driver); 171} 172 173module_init(lasi700_init); 174module_exit(lasi700_exit); 175