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 #include <linux/slab.h> 44 45 #include <asm/page.h> 46 #include <asm/pgtable.h> 47 #include <asm/irq.h> 48 #include <asm/hardware.h> 49 #include <asm/parisc-device.h> 50 #include <asm/delay.h> 51 52 #include <scsi/scsi_host.h> 53 #include <scsi/scsi_device.h> 54 #include <scsi/scsi_transport.h> 55 #include <scsi/scsi_transport_spi.h> 56 57 #include "53c700.h" 58 59 MODULE_AUTHOR("James Bottomley"); 60 MODULE_DESCRIPTION("lasi700 SCSI Driver"); 61 MODULE_LICENSE("GPL"); 62 63 #define LASI_700_SVERSION 0x00071 64 #define LASI_710_SVERSION 0x00082 65 66 #define LASI700_ID_TABLE { \ 67 .hw_type = HPHW_FIO, \ 68 .sversion = LASI_700_SVERSION, \ 69 .hversion = HVERSION_ANY_ID, \ 70 .hversion_rev = HVERSION_REV_ANY_ID, \ 71 } 72 73 #define LASI710_ID_TABLE { \ 74 .hw_type = HPHW_FIO, \ 75 .sversion = LASI_710_SVERSION, \ 76 .hversion = HVERSION_ANY_ID, \ 77 .hversion_rev = HVERSION_REV_ANY_ID, \ 78 } 79 80 #define LASI700_CLOCK 25 81 #define LASI710_CLOCK 40 82 #define LASI_SCSI_CORE_OFFSET 0x100 83 84 static const struct parisc_device_id lasi700_ids[] __initconst = { 85 LASI700_ID_TABLE, 86 LASI710_ID_TABLE, 87 { 0 } 88 }; 89 90 static struct scsi_host_template lasi700_template = { 91 .name = "LASI SCSI 53c700", 92 .proc_name = "lasi700", 93 .this_id = 7, 94 .module = THIS_MODULE, 95 }; 96 MODULE_DEVICE_TABLE(parisc, lasi700_ids); 97 98 static int __init 99 lasi700_probe(struct parisc_device *dev) 100 { 101 unsigned long base = dev->hpa.start + LASI_SCSI_CORE_OFFSET; 102 struct NCR_700_Host_Parameters *hostdata; 103 struct Scsi_Host *host; 104 105 hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL); 106 if (!hostdata) { 107 dev_printk(KERN_ERR, &dev->dev, "Failed to allocate host data\n"); 108 return -ENOMEM; 109 } 110 111 hostdata->dev = &dev->dev; 112 dma_set_mask(&dev->dev, DMA_BIT_MASK(32)); 113 hostdata->base = ioremap_nocache(base, 0x100); 114 hostdata->differential = 0; 115 116 if (dev->id.sversion == LASI_700_SVERSION) { 117 hostdata->clock = LASI700_CLOCK; 118 hostdata->force_le_on_be = 1; 119 } else { 120 hostdata->clock = LASI710_CLOCK; 121 hostdata->force_le_on_be = 0; 122 hostdata->chip710 = 1; 123 hostdata->dmode_extra = DMODE_FC2; 124 hostdata->burst_length = 8; 125 } 126 127 host = NCR_700_detect(&lasi700_template, hostdata, &dev->dev); 128 if (!host) 129 goto out_kfree; 130 host->this_id = 7; 131 host->base = base; 132 host->irq = dev->irq; 133 if(request_irq(dev->irq, NCR_700_intr, IRQF_SHARED, "lasi700", host)) { 134 printk(KERN_ERR "lasi700: request_irq failed!\n"); 135 goto out_put_host; 136 } 137 138 dev_set_drvdata(&dev->dev, host); 139 scsi_scan_host(host); 140 141 return 0; 142 143 out_put_host: 144 scsi_host_put(host); 145 out_kfree: 146 iounmap(hostdata->base); 147 kfree(hostdata); 148 return -ENODEV; 149 } 150 151 static int __exit 152 lasi700_driver_remove(struct parisc_device *dev) 153 { 154 struct Scsi_Host *host = dev_get_drvdata(&dev->dev); 155 struct NCR_700_Host_Parameters *hostdata = 156 (struct NCR_700_Host_Parameters *)host->hostdata[0]; 157 158 scsi_remove_host(host); 159 NCR_700_release(host); 160 free_irq(host->irq, host); 161 iounmap(hostdata->base); 162 kfree(hostdata); 163 164 return 0; 165 } 166 167 static struct parisc_driver lasi700_driver __refdata = { 168 .name = "lasi_scsi", 169 .id_table = lasi700_ids, 170 .probe = lasi700_probe, 171 .remove = __exit_p(lasi700_driver_remove), 172 }; 173 174 static int __init 175 lasi700_init(void) 176 { 177 return register_parisc_driver(&lasi700_driver); 178 } 179 180 static void __exit 181 lasi700_exit(void) 182 { 183 unregister_parisc_driver(&lasi700_driver); 184 } 185 186 module_init(lasi700_init); 187 module_exit(lasi700_exit); 188