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/pgtable.h> 35 #include <asm/irq.h> 36 #include <asm/hardware.h> 37 #include <asm/parisc-device.h> 38 #include <asm/delay.h> 39 40 #include <scsi/scsi_host.h> 41 #include <scsi/scsi_device.h> 42 #include <scsi/scsi_transport.h> 43 #include <scsi/scsi_transport_spi.h> 44 45 #include "53c700.h" 46 47 MODULE_AUTHOR("James Bottomley"); 48 MODULE_DESCRIPTION("lasi700 SCSI Driver"); 49 MODULE_LICENSE("GPL"); 50 51 #define LASI_700_SVERSION 0x00071 52 #define LASI_710_SVERSION 0x00082 53 54 #define LASI700_ID_TABLE { \ 55 .hw_type = HPHW_FIO, \ 56 .sversion = LASI_700_SVERSION, \ 57 .hversion = HVERSION_ANY_ID, \ 58 .hversion_rev = HVERSION_REV_ANY_ID, \ 59 } 60 61 #define LASI710_ID_TABLE { \ 62 .hw_type = HPHW_FIO, \ 63 .sversion = LASI_710_SVERSION, \ 64 .hversion = HVERSION_ANY_ID, \ 65 .hversion_rev = HVERSION_REV_ANY_ID, \ 66 } 67 68 #define LASI700_CLOCK 25 69 #define LASI710_CLOCK 40 70 #define LASI_SCSI_CORE_OFFSET 0x100 71 72 static const struct parisc_device_id lasi700_ids[] __initconst = { 73 LASI700_ID_TABLE, 74 LASI710_ID_TABLE, 75 { 0 } 76 }; 77 78 static struct scsi_host_template lasi700_template = { 79 .name = "LASI SCSI 53c700", 80 .proc_name = "lasi700", 81 .this_id = 7, 82 .module = THIS_MODULE, 83 }; 84 MODULE_DEVICE_TABLE(parisc, lasi700_ids); 85 86 static int __init 87 lasi700_probe(struct parisc_device *dev) 88 { 89 unsigned long base = dev->hpa.start + LASI_SCSI_CORE_OFFSET; 90 struct NCR_700_Host_Parameters *hostdata; 91 struct Scsi_Host *host; 92 93 hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL); 94 if (!hostdata) { 95 dev_printk(KERN_ERR, &dev->dev, "Failed to allocate host data\n"); 96 return -ENOMEM; 97 } 98 99 hostdata->dev = &dev->dev; 100 dma_set_mask(&dev->dev, DMA_BIT_MASK(32)); 101 hostdata->base = ioremap_nocache(base, 0x100); 102 hostdata->differential = 0; 103 104 if (dev->id.sversion == LASI_700_SVERSION) { 105 hostdata->clock = LASI700_CLOCK; 106 hostdata->force_le_on_be = 1; 107 } else { 108 hostdata->clock = LASI710_CLOCK; 109 hostdata->force_le_on_be = 0; 110 hostdata->chip710 = 1; 111 hostdata->dmode_extra = DMODE_FC2; 112 hostdata->burst_length = 8; 113 } 114 115 host = NCR_700_detect(&lasi700_template, hostdata, &dev->dev); 116 if (!host) 117 goto out_kfree; 118 host->this_id = 7; 119 host->base = base; 120 host->irq = dev->irq; 121 if(request_irq(dev->irq, NCR_700_intr, IRQF_SHARED, "lasi700", host)) { 122 printk(KERN_ERR "lasi700: request_irq failed!\n"); 123 goto out_put_host; 124 } 125 126 dev_set_drvdata(&dev->dev, host); 127 scsi_scan_host(host); 128 129 return 0; 130 131 out_put_host: 132 scsi_host_put(host); 133 out_kfree: 134 iounmap(hostdata->base); 135 kfree(hostdata); 136 return -ENODEV; 137 } 138 139 static int __exit 140 lasi700_driver_remove(struct parisc_device *dev) 141 { 142 struct Scsi_Host *host = dev_get_drvdata(&dev->dev); 143 struct NCR_700_Host_Parameters *hostdata = 144 (struct NCR_700_Host_Parameters *)host->hostdata[0]; 145 146 scsi_remove_host(host); 147 NCR_700_release(host); 148 free_irq(host->irq, host); 149 iounmap(hostdata->base); 150 kfree(hostdata); 151 152 return 0; 153 } 154 155 static struct parisc_driver lasi700_driver __refdata = { 156 .name = "lasi_scsi", 157 .id_table = lasi700_ids, 158 .probe = lasi700_probe, 159 .remove = __exit_p(lasi700_driver_remove), 160 }; 161 162 static int __init 163 lasi700_init(void) 164 { 165 return register_parisc_driver(&lasi700_driver); 166 } 167 168 static void __exit 169 lasi700_exit(void) 170 { 171 unregister_parisc_driver(&lasi700_driver); 172 } 173 174 module_init(lasi700_init); 175 module_exit(lasi700_exit); 176