1 /* -*- mode: c; c-basic-offset: 8 -*- */ 2 3 /* SNI RM driver 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 * Based on lasi700.c 27 */ 28 29 #include <linux/kernel.h> 30 #include <linux/module.h> 31 #include <linux/init.h> 32 #include <linux/types.h> 33 #include <linux/slab.h> 34 #include <linux/stat.h> 35 #include <linux/mm.h> 36 #include <linux/blkdev.h> 37 #include <linux/sched.h> 38 #include <linux/ioport.h> 39 #include <linux/dma-mapping.h> 40 #include <linux/platform_device.h> 41 42 #include <asm/page.h> 43 #include <asm/pgtable.h> 44 #include <asm/irq.h> 45 #include <asm/delay.h> 46 47 #include <scsi/scsi_host.h> 48 #include <scsi/scsi_device.h> 49 #include <scsi/scsi_transport.h> 50 #include <scsi/scsi_transport_spi.h> 51 52 #include "53c700.h" 53 54 MODULE_AUTHOR("Thomas Bogendörfer"); 55 MODULE_DESCRIPTION("SNI RM 53c710 SCSI Driver"); 56 MODULE_LICENSE("GPL"); 57 MODULE_ALIAS("platform:snirm_53c710"); 58 59 #define SNIRM710_CLOCK 32 60 61 static struct scsi_host_template snirm710_template = { 62 .name = "SNI RM SCSI 53c710", 63 .proc_name = "snirm_53c710", 64 .this_id = 7, 65 .module = THIS_MODULE, 66 }; 67 68 static int snirm710_probe(struct platform_device *dev) 69 { 70 unsigned long base; 71 struct NCR_700_Host_Parameters *hostdata; 72 struct Scsi_Host *host; 73 struct resource *res; 74 75 res = platform_get_resource(dev, IORESOURCE_MEM, 0); 76 if (!res) 77 return -ENODEV; 78 79 base = res->start; 80 hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL); 81 if (!hostdata) { 82 dev_printk(KERN_ERR, dev, "Failed to allocate host data\n"); 83 return -ENOMEM; 84 } 85 86 hostdata->dev = &dev->dev; 87 dma_set_mask(&dev->dev, DMA_BIT_MASK(32)); 88 hostdata->base = ioremap_nocache(base, 0x100); 89 hostdata->differential = 0; 90 91 hostdata->clock = SNIRM710_CLOCK; 92 hostdata->force_le_on_be = 1; 93 hostdata->chip710 = 1; 94 hostdata->burst_length = 4; 95 96 host = NCR_700_detect(&snirm710_template, hostdata, &dev->dev); 97 if (!host) 98 goto out_kfree; 99 host->this_id = 7; 100 host->base = base; 101 host->irq = platform_get_irq(dev, 0); 102 if(request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "snirm710", host)) { 103 printk(KERN_ERR "snirm710: request_irq failed!\n"); 104 goto out_put_host; 105 } 106 107 dev_set_drvdata(&dev->dev, host); 108 scsi_scan_host(host); 109 110 return 0; 111 112 out_put_host: 113 scsi_host_put(host); 114 out_kfree: 115 iounmap(hostdata->base); 116 kfree(hostdata); 117 return -ENODEV; 118 } 119 120 static int __exit snirm710_driver_remove(struct platform_device *dev) 121 { 122 struct Scsi_Host *host = dev_get_drvdata(&dev->dev); 123 struct NCR_700_Host_Parameters *hostdata = 124 (struct NCR_700_Host_Parameters *)host->hostdata[0]; 125 126 scsi_remove_host(host); 127 NCR_700_release(host); 128 free_irq(host->irq, host); 129 iounmap(hostdata->base); 130 kfree(hostdata); 131 132 return 0; 133 } 134 135 static struct platform_driver snirm710_driver = { 136 .probe = snirm710_probe, 137 .remove = snirm710_driver_remove, 138 .driver = { 139 .name = "snirm_53c710", 140 }, 141 }; 142 143 static int __init snirm710_init(void) 144 { 145 return platform_driver_register(&snirm710_driver); 146 } 147 148 static void __exit snirm710_exit(void) 149 { 150 platform_driver_unregister(&snirm710_driver); 151 } 152 153 module_init(snirm710_init); 154 module_exit(snirm710_exit); 155