1 // SPDX-License-Identifier: GPL-2.0-or-later 2 3 /* SNI RM driver 4 * 5 * Copyright (C) 2001 by James.Bottomley@HansenPartnership.com 6 **----------------------------------------------------------------------------- 7 ** 8 ** 9 **----------------------------------------------------------------------------- 10 */ 11 12 /* 13 * Based on lasi700.c 14 */ 15 16 #include <linux/kernel.h> 17 #include <linux/module.h> 18 #include <linux/init.h> 19 #include <linux/types.h> 20 #include <linux/slab.h> 21 #include <linux/stat.h> 22 #include <linux/mm.h> 23 #include <linux/blkdev.h> 24 #include <linux/sched.h> 25 #include <linux/ioport.h> 26 #include <linux/dma-mapping.h> 27 #include <linux/platform_device.h> 28 29 #include <asm/page.h> 30 #include <asm/irq.h> 31 #include <asm/delay.h> 32 33 #include <scsi/scsi_host.h> 34 #include <scsi/scsi_device.h> 35 #include <scsi/scsi_transport.h> 36 #include <scsi/scsi_transport_spi.h> 37 38 #include "53c700.h" 39 40 MODULE_AUTHOR("Thomas Bogendörfer"); 41 MODULE_DESCRIPTION("SNI RM 53c710 SCSI Driver"); 42 MODULE_LICENSE("GPL"); 43 MODULE_ALIAS("platform:snirm_53c710"); 44 45 #define SNIRM710_CLOCK 32 46 47 static struct scsi_host_template snirm710_template = { 48 .name = "SNI RM SCSI 53c710", 49 .proc_name = "snirm_53c710", 50 .this_id = 7, 51 .module = THIS_MODULE, 52 }; 53 54 static int snirm710_probe(struct platform_device *dev) 55 { 56 unsigned long base; 57 struct NCR_700_Host_Parameters *hostdata; 58 struct Scsi_Host *host; 59 struct resource *res; 60 int rc; 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 = rc = platform_get_irq(dev, 0); 87 if (rc < 0) 88 goto out_put_host; 89 if(request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "snirm710", host)) { 90 printk(KERN_ERR "snirm710: request_irq failed!\n"); 91 goto out_put_host; 92 } 93 94 dev_set_drvdata(&dev->dev, host); 95 scsi_scan_host(host); 96 97 return 0; 98 99 out_put_host: 100 scsi_host_put(host); 101 out_kfree: 102 iounmap(hostdata->base); 103 kfree(hostdata); 104 return -ENODEV; 105 } 106 107 static int snirm710_driver_remove(struct platform_device *dev) 108 { 109 struct Scsi_Host *host = dev_get_drvdata(&dev->dev); 110 struct NCR_700_Host_Parameters *hostdata = 111 (struct NCR_700_Host_Parameters *)host->hostdata[0]; 112 113 scsi_remove_host(host); 114 NCR_700_release(host); 115 free_irq(host->irq, host); 116 iounmap(hostdata->base); 117 kfree(hostdata); 118 119 return 0; 120 } 121 122 static struct platform_driver snirm710_driver = { 123 .probe = snirm710_probe, 124 .remove = snirm710_driver_remove, 125 .driver = { 126 .name = "snirm_53c710", 127 }, 128 }; 129 module_platform_driver(snirm710_driver); 130