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/irq.h> 32 #include <asm/delay.h> 33 34 #include <scsi/scsi_host.h> 35 #include <scsi/scsi_device.h> 36 #include <scsi/scsi_transport.h> 37 #include <scsi/scsi_transport_spi.h> 38 39 #include "53c700.h" 40 41 MODULE_AUTHOR("Thomas Bogendörfer"); 42 MODULE_DESCRIPTION("SNI RM 53c710 SCSI Driver"); 43 MODULE_LICENSE("GPL"); 44 MODULE_ALIAS("platform:snirm_53c710"); 45 46 #define SNIRM710_CLOCK 32 47 48 static struct scsi_host_template snirm710_template = { 49 .name = "SNI RM SCSI 53c710", 50 .proc_name = "snirm_53c710", 51 .this_id = 7, 52 .module = THIS_MODULE, 53 }; 54 55 static int snirm710_probe(struct platform_device *dev) 56 { 57 unsigned long base; 58 struct NCR_700_Host_Parameters *hostdata; 59 struct Scsi_Host *host; 60 struct resource *res; 61 62 res = platform_get_resource(dev, IORESOURCE_MEM, 0); 63 if (!res) 64 return -ENODEV; 65 66 base = res->start; 67 hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL); 68 if (!hostdata) 69 return -ENOMEM; 70 71 hostdata->dev = &dev->dev; 72 dma_set_mask(&dev->dev, DMA_BIT_MASK(32)); 73 hostdata->base = ioremap(base, 0x100); 74 hostdata->differential = 0; 75 76 hostdata->clock = SNIRM710_CLOCK; 77 hostdata->force_le_on_be = 1; 78 hostdata->chip710 = 1; 79 hostdata->burst_length = 4; 80 81 host = NCR_700_detect(&snirm710_template, hostdata, &dev->dev); 82 if (!host) 83 goto out_kfree; 84 host->this_id = 7; 85 host->base = base; 86 host->irq = platform_get_irq(dev, 0); 87 if(request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "snirm710", host)) { 88 printk(KERN_ERR "snirm710: request_irq failed!\n"); 89 goto out_put_host; 90 } 91 92 dev_set_drvdata(&dev->dev, host); 93 scsi_scan_host(host); 94 95 return 0; 96 97 out_put_host: 98 scsi_host_put(host); 99 out_kfree: 100 iounmap(hostdata->base); 101 kfree(hostdata); 102 return -ENODEV; 103 } 104 105 static int snirm710_driver_remove(struct platform_device *dev) 106 { 107 struct Scsi_Host *host = dev_get_drvdata(&dev->dev); 108 struct NCR_700_Host_Parameters *hostdata = 109 (struct NCR_700_Host_Parameters *)host->hostdata[0]; 110 111 scsi_remove_host(host); 112 NCR_700_release(host); 113 free_irq(host->irq, host); 114 iounmap(hostdata->base); 115 kfree(hostdata); 116 117 return 0; 118 } 119 120 static struct platform_driver snirm710_driver = { 121 .probe = snirm710_probe, 122 .remove = snirm710_driver_remove, 123 .driver = { 124 .name = "snirm_53c710", 125 }, 126 }; 127 module_platform_driver(snirm710_driver); 128