1 /* -*- mode: c; c-basic-offset: 8 -*- */ 2 3 /* PARISC LASI driver for the 53c700 chip 4 * 5 * Copyright (C) 2001 by James.Bottomley@HansenPartnership.com 6 **----------------------------------------------------------------------------- 7 ** 8 ** This program is free software; you can redistribute it and/or modify 9 ** it under the terms of the GNU General Public License as published by 10 ** the Free Software Foundation; either version 2 of the License, or 11 ** (at your option) any later version. 12 ** 13 ** This program is distributed in the hope that it will be useful, 14 ** but WITHOUT ANY WARRANTY; without even the implied warranty of 15 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 ** GNU General Public License for more details. 17 ** 18 ** You should have received a copy of the GNU General Public License 19 ** along with this program; if not, write to the Free Software 20 ** Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 21 ** 22 **----------------------------------------------------------------------------- 23 */ 24 25 /* 26 * Many thanks to Richard Hirst <rhirst@linuxcare.com> for patiently 27 * debugging this driver on the parisc architecture and suggesting 28 * many improvements and bug fixes. 29 * 30 * Thanks also go to Linuxcare Inc. for providing several PARISC 31 * machines for me to debug the driver on. 32 */ 33 34 #include <linux/kernel.h> 35 #include <linux/module.h> 36 #include <linux/init.h> 37 #include <linux/types.h> 38 #include <linux/stat.h> 39 #include <linux/mm.h> 40 #include <linux/blkdev.h> 41 #include <linux/ioport.h> 42 #include <linux/dma-mapping.h> 43 44 #include <asm/page.h> 45 #include <asm/pgtable.h> 46 #include <asm/irq.h> 47 #include <asm/hardware.h> 48 #include <asm/parisc-device.h> 49 #include <asm/delay.h> 50 51 #include <scsi/scsi_host.h> 52 #include <scsi/scsi_device.h> 53 #include <scsi/scsi_transport.h> 54 #include <scsi/scsi_transport_spi.h> 55 56 #include "53c700.h" 57 58 MODULE_AUTHOR("James Bottomley"); 59 MODULE_DESCRIPTION("lasi700 SCSI Driver"); 60 MODULE_LICENSE("GPL"); 61 62 #define LASI_700_SVERSION 0x00071 63 #define LASI_710_SVERSION 0x00082 64 65 #define LASI700_ID_TABLE { \ 66 .hw_type = HPHW_FIO, \ 67 .sversion = LASI_700_SVERSION, \ 68 .hversion = HVERSION_ANY_ID, \ 69 .hversion_rev = HVERSION_REV_ANY_ID, \ 70 } 71 72 #define LASI710_ID_TABLE { \ 73 .hw_type = HPHW_FIO, \ 74 .sversion = LASI_710_SVERSION, \ 75 .hversion = HVERSION_ANY_ID, \ 76 .hversion_rev = HVERSION_REV_ANY_ID, \ 77 } 78 79 #define LASI700_CLOCK 25 80 #define LASI710_CLOCK 40 81 #define LASI_SCSI_CORE_OFFSET 0x100 82 83 static struct parisc_device_id lasi700_ids[] = { 84 LASI700_ID_TABLE, 85 LASI710_ID_TABLE, 86 { 0 } 87 }; 88 89 static struct scsi_host_template lasi700_template = { 90 .name = "LASI SCSI 53c700", 91 .proc_name = "lasi700", 92 .this_id = 7, 93 .module = THIS_MODULE, 94 }; 95 MODULE_DEVICE_TABLE(parisc, lasi700_ids); 96 97 static int __init 98 lasi700_probe(struct parisc_device *dev) 99 { 100 unsigned long base = dev->hpa.start + LASI_SCSI_CORE_OFFSET; 101 struct NCR_700_Host_Parameters *hostdata; 102 struct Scsi_Host *host; 103 104 hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL); 105 if (!hostdata) { 106 dev_printk(KERN_ERR, &dev->dev, "Failed to allocate host data\n"); 107 return -ENOMEM; 108 } 109 110 hostdata->dev = &dev->dev; 111 dma_set_mask(&dev->dev, DMA_BIT_MASK(32)); 112 hostdata->base = ioremap_nocache(base, 0x100); 113 hostdata->differential = 0; 114 115 if (dev->id.sversion == LASI_700_SVERSION) { 116 hostdata->clock = LASI700_CLOCK; 117 hostdata->force_le_on_be = 1; 118 } else { 119 hostdata->clock = LASI710_CLOCK; 120 hostdata->force_le_on_be = 0; 121 hostdata->chip710 = 1; 122 hostdata->dmode_extra = DMODE_FC2; 123 hostdata->burst_length = 8; 124 } 125 126 host = NCR_700_detect(&lasi700_template, hostdata, &dev->dev); 127 if (!host) 128 goto out_kfree; 129 host->this_id = 7; 130 host->base = base; 131 host->irq = dev->irq; 132 if(request_irq(dev->irq, NCR_700_intr, IRQF_SHARED, "lasi700", host)) { 133 printk(KERN_ERR "lasi700: request_irq failed!\n"); 134 goto out_put_host; 135 } 136 137 dev_set_drvdata(&dev->dev, host); 138 scsi_scan_host(host); 139 140 return 0; 141 142 out_put_host: 143 scsi_host_put(host); 144 out_kfree: 145 iounmap(hostdata->base); 146 kfree(hostdata); 147 return -ENODEV; 148 } 149 150 static int __exit 151 lasi700_driver_remove(struct parisc_device *dev) 152 { 153 struct Scsi_Host *host = dev_get_drvdata(&dev->dev); 154 struct NCR_700_Host_Parameters *hostdata = 155 (struct NCR_700_Host_Parameters *)host->hostdata[0]; 156 157 scsi_remove_host(host); 158 NCR_700_release(host); 159 free_irq(host->irq, host); 160 iounmap(hostdata->base); 161 kfree(hostdata); 162 163 return 0; 164 } 165 166 static struct parisc_driver lasi700_driver = { 167 .name = "lasi_scsi", 168 .id_table = lasi700_ids, 169 .probe = lasi700_probe, 170 .remove = __devexit_p(lasi700_driver_remove), 171 }; 172 173 static int __init 174 lasi700_init(void) 175 { 176 return register_parisc_driver(&lasi700_driver); 177 } 178 179 static void __exit 180 lasi700_exit(void) 181 { 182 unregister_parisc_driver(&lasi700_driver); 183 } 184 185 module_init(lasi700_init); 186 module_exit(lasi700_exit); 187