1 // SPDX-License-Identifier: GPL-2.0-or-later 2 3 /* PARISC LASI driver for the 53c700 chip 4 * 5 * Copyright (C) 2001 by James.Bottomley@HansenPartnership.com 6 **----------------------------------------------------------------------------- 7 ** 8 ** 9 **----------------------------------------------------------------------------- 10 */ 11 12 /* 13 * Many thanks to Richard Hirst <rhirst@linuxcare.com> for patiently 14 * debugging this driver on the parisc architecture and suggesting 15 * many improvements and bug fixes. 16 * 17 * Thanks also go to Linuxcare Inc. for providing several PARISC 18 * machines for me to debug the driver on. 19 */ 20 21 #include <linux/kernel.h> 22 #include <linux/module.h> 23 #include <linux/init.h> 24 #include <linux/types.h> 25 #include <linux/stat.h> 26 #include <linux/mm.h> 27 #include <linux/blkdev.h> 28 #include <linux/ioport.h> 29 #include <linux/dma-mapping.h> 30 #include <linux/slab.h> 31 32 #include <asm/page.h> 33 #include <asm/irq.h> 34 #include <asm/hardware.h> 35 #include <asm/parisc-device.h> 36 #include <asm/delay.h> 37 38 #include <scsi/scsi_host.h> 39 #include <scsi/scsi_device.h> 40 #include <scsi/scsi_transport.h> 41 #include <scsi/scsi_transport_spi.h> 42 43 #include "53c700.h" 44 45 MODULE_AUTHOR("James Bottomley"); 46 MODULE_DESCRIPTION("lasi700 SCSI Driver"); 47 MODULE_LICENSE("GPL"); 48 49 #define LASI_700_SVERSION 0x00071 50 #define LASI_710_SVERSION 0x00082 51 52 #define LASI700_ID_TABLE { \ 53 .hw_type = HPHW_FIO, \ 54 .sversion = LASI_700_SVERSION, \ 55 .hversion = HVERSION_ANY_ID, \ 56 .hversion_rev = HVERSION_REV_ANY_ID, \ 57 } 58 59 #define LASI710_ID_TABLE { \ 60 .hw_type = HPHW_FIO, \ 61 .sversion = LASI_710_SVERSION, \ 62 .hversion = HVERSION_ANY_ID, \ 63 .hversion_rev = HVERSION_REV_ANY_ID, \ 64 } 65 66 #define LASI700_CLOCK 25 67 #define LASI710_CLOCK 40 68 #define LASI_SCSI_CORE_OFFSET 0x100 69 70 static const struct parisc_device_id lasi700_ids[] __initconst = { 71 LASI700_ID_TABLE, 72 LASI710_ID_TABLE, 73 { 0 } 74 }; 75 76 static struct scsi_host_template lasi700_template = { 77 .name = "LASI SCSI 53c700", 78 .proc_name = "lasi700", 79 .this_id = 7, 80 .module = THIS_MODULE, 81 }; 82 MODULE_DEVICE_TABLE(parisc, lasi700_ids); 83 84 static int __init 85 lasi700_probe(struct parisc_device *dev) 86 { 87 unsigned long base = dev->hpa.start + LASI_SCSI_CORE_OFFSET; 88 struct NCR_700_Host_Parameters *hostdata; 89 struct Scsi_Host *host; 90 91 hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL); 92 if (!hostdata) { 93 dev_printk(KERN_ERR, &dev->dev, "Failed to allocate host data\n"); 94 return -ENOMEM; 95 } 96 97 hostdata->dev = &dev->dev; 98 dma_set_mask(&dev->dev, DMA_BIT_MASK(32)); 99 hostdata->base = ioremap(base, 0x100); 100 hostdata->differential = 0; 101 102 if (dev->id.sversion == LASI_700_SVERSION) { 103 hostdata->clock = LASI700_CLOCK; 104 hostdata->force_le_on_be = 1; 105 } else { 106 hostdata->clock = LASI710_CLOCK; 107 hostdata->force_le_on_be = 0; 108 hostdata->chip710 = 1; 109 hostdata->dmode_extra = DMODE_FC2; 110 hostdata->burst_length = 8; 111 } 112 113 host = NCR_700_detect(&lasi700_template, hostdata, &dev->dev); 114 if (!host) 115 goto out_kfree; 116 host->this_id = 7; 117 host->base = base; 118 host->irq = dev->irq; 119 if(request_irq(dev->irq, NCR_700_intr, IRQF_SHARED, "lasi700", host)) { 120 printk(KERN_ERR "lasi700: request_irq failed!\n"); 121 goto out_put_host; 122 } 123 124 dev_set_drvdata(&dev->dev, host); 125 scsi_scan_host(host); 126 127 return 0; 128 129 out_put_host: 130 scsi_host_put(host); 131 out_kfree: 132 iounmap(hostdata->base); 133 kfree(hostdata); 134 return -ENODEV; 135 } 136 137 static void __exit 138 lasi700_driver_remove(struct parisc_device *dev) 139 { 140 struct Scsi_Host *host = dev_get_drvdata(&dev->dev); 141 struct NCR_700_Host_Parameters *hostdata = 142 (struct NCR_700_Host_Parameters *)host->hostdata[0]; 143 144 scsi_remove_host(host); 145 NCR_700_release(host); 146 free_irq(host->irq, host); 147 iounmap(hostdata->base); 148 kfree(hostdata); 149 } 150 151 static struct parisc_driver lasi700_driver __refdata = { 152 .name = "lasi_scsi", 153 .id_table = lasi700_ids, 154 .probe = lasi700_probe, 155 .remove = __exit_p(lasi700_driver_remove), 156 }; 157 158 static int __init 159 lasi700_init(void) 160 { 161 return register_parisc_driver(&lasi700_driver); 162 } 163 164 static void __exit 165 lasi700_exit(void) 166 { 167 unregister_parisc_driver(&lasi700_driver); 168 } 169 170 module_init(lasi700_init); 171 module_exit(lasi700_exit); 172