1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* -*- mode: c; c-basic-offset: 8 -*- */ 3 4 /* SNI RM driver 5 * 6 * Copyright (C) 2001 by James.Bottomley@HansenPartnership.com 7 **----------------------------------------------------------------------------- 8 ** 9 ** 10 **----------------------------------------------------------------------------- 11 */ 12 13 /* 14 * Based on lasi700.c 15 */ 16 17 #include <linux/kernel.h> 18 #include <linux/module.h> 19 #include <linux/init.h> 20 #include <linux/types.h> 21 #include <linux/slab.h> 22 #include <linux/stat.h> 23 #include <linux/mm.h> 24 #include <linux/blkdev.h> 25 #include <linux/sched.h> 26 #include <linux/ioport.h> 27 #include <linux/dma-mapping.h> 28 #include <linux/platform_device.h> 29 30 #include <asm/page.h> 31 #include <asm/pgtable.h> 32 #include <asm/irq.h> 33 #include <asm/delay.h> 34 35 #include <scsi/scsi_host.h> 36 #include <scsi/scsi_device.h> 37 #include <scsi/scsi_transport.h> 38 #include <scsi/scsi_transport_spi.h> 39 40 #include "53c700.h" 41 42 MODULE_AUTHOR("Thomas Bogendörfer"); 43 MODULE_DESCRIPTION("SNI RM 53c710 SCSI Driver"); 44 MODULE_LICENSE("GPL"); 45 MODULE_ALIAS("platform:snirm_53c710"); 46 47 #define SNIRM710_CLOCK 32 48 49 static struct scsi_host_template snirm710_template = { 50 .name = "SNI RM SCSI 53c710", 51 .proc_name = "snirm_53c710", 52 .this_id = 7, 53 .module = THIS_MODULE, 54 }; 55 56 static int snirm710_probe(struct platform_device *dev) 57 { 58 unsigned long base; 59 struct NCR_700_Host_Parameters *hostdata; 60 struct Scsi_Host *host; 61 struct resource *res; 62 63 res = platform_get_resource(dev, IORESOURCE_MEM, 0); 64 if (!res) 65 return -ENODEV; 66 67 base = res->start; 68 hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL); 69 if (!hostdata) 70 return -ENOMEM; 71 72 hostdata->dev = &dev->dev; 73 dma_set_mask(&dev->dev, DMA_BIT_MASK(32)); 74 hostdata->base = ioremap_nocache(base, 0x100); 75 hostdata->differential = 0; 76 77 hostdata->clock = SNIRM710_CLOCK; 78 hostdata->force_le_on_be = 1; 79 hostdata->chip710 = 1; 80 hostdata->burst_length = 4; 81 82 host = NCR_700_detect(&snirm710_template, hostdata, &dev->dev); 83 if (!host) 84 goto out_kfree; 85 host->this_id = 7; 86 host->base = base; 87 host->irq = platform_get_irq(dev, 0); 88 if(request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "snirm710", host)) { 89 printk(KERN_ERR "snirm710: request_irq failed!\n"); 90 goto out_put_host; 91 } 92 93 dev_set_drvdata(&dev->dev, host); 94 scsi_scan_host(host); 95 96 return 0; 97 98 out_put_host: 99 scsi_host_put(host); 100 out_kfree: 101 iounmap(hostdata->base); 102 kfree(hostdata); 103 return -ENODEV; 104 } 105 106 static int snirm710_driver_remove(struct platform_device *dev) 107 { 108 struct Scsi_Host *host = dev_get_drvdata(&dev->dev); 109 struct NCR_700_Host_Parameters *hostdata = 110 (struct NCR_700_Host_Parameters *)host->hostdata[0]; 111 112 scsi_remove_host(host); 113 NCR_700_release(host); 114 free_irq(host->irq, host); 115 iounmap(hostdata->base); 116 kfree(hostdata); 117 118 return 0; 119 } 120 121 static struct platform_driver snirm710_driver = { 122 .probe = snirm710_probe, 123 .remove = snirm710_driver_remove, 124 .driver = { 125 .name = "snirm_53c710", 126 }, 127 }; 128 129 static int __init snirm710_init(void) 130 { 131 return platform_driver_register(&snirm710_driver); 132 } 133 134 static void __exit snirm710_exit(void) 135 { 136 platform_driver_unregister(&snirm710_driver); 137 } 138 139 module_init(snirm710_init); 140 module_exit(snirm710_exit); 141