Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* -*- mode: c; c-basic-offset: 8 -*- */ |
| 2 | |
| 3 | /* PARISC LASI driver for the 53c700 chip |
| 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 | * Many thanks to Richard Hirst <rhirst@linuxcare.com> for patiently |
| 27 | * debugging this driver on the parisc architecture and suggesting |
| 28 | * many improvements and bug fixes. |
| 29 | * |
| 30 | * Thanks also go to Linuxcare Inc. for providing several PARISC |
| 31 | * machines for me to debug the driver on. |
| 32 | */ |
| 33 | |
| 34 | #include <linux/kernel.h> |
| 35 | #include <linux/module.h> |
| 36 | #include <linux/init.h> |
| 37 | #include <linux/types.h> |
| 38 | #include <linux/stat.h> |
| 39 | #include <linux/mm.h> |
| 40 | #include <linux/blkdev.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | #include <linux/ioport.h> |
| 42 | #include <linux/dma-mapping.h> |
| 43 | |
| 44 | #include <asm/page.h> |
| 45 | #include <asm/pgtable.h> |
| 46 | #include <asm/irq.h> |
| 47 | #include <asm/hardware.h> |
| 48 | #include <asm/parisc-device.h> |
| 49 | #include <asm/delay.h> |
| 50 | |
| 51 | #include <scsi/scsi_host.h> |
| 52 | #include <scsi/scsi_device.h> |
| 53 | #include <scsi/scsi_transport.h> |
| 54 | #include <scsi/scsi_transport_spi.h> |
| 55 | |
| 56 | #include "53c700.h" |
| 57 | |
| 58 | MODULE_AUTHOR("James Bottomley"); |
| 59 | MODULE_DESCRIPTION("lasi700 SCSI Driver"); |
| 60 | MODULE_LICENSE("GPL"); |
| 61 | |
| 62 | #define LASI_700_SVERSION 0x00071 |
| 63 | #define LASI_710_SVERSION 0x00082 |
| 64 | |
| 65 | #define LASI700_ID_TABLE { \ |
| 66 | .hw_type = HPHW_FIO, \ |
| 67 | .sversion = LASI_700_SVERSION, \ |
| 68 | .hversion = HVERSION_ANY_ID, \ |
| 69 | .hversion_rev = HVERSION_REV_ANY_ID, \ |
| 70 | } |
| 71 | |
| 72 | #define LASI710_ID_TABLE { \ |
| 73 | .hw_type = HPHW_FIO, \ |
| 74 | .sversion = LASI_710_SVERSION, \ |
| 75 | .hversion = HVERSION_ANY_ID, \ |
| 76 | .hversion_rev = HVERSION_REV_ANY_ID, \ |
| 77 | } |
| 78 | |
| 79 | #define LASI700_CLOCK 25 |
| 80 | #define LASI710_CLOCK 40 |
| 81 | #define LASI_SCSI_CORE_OFFSET 0x100 |
| 82 | |
| 83 | static struct parisc_device_id lasi700_ids[] = { |
| 84 | LASI700_ID_TABLE, |
| 85 | LASI710_ID_TABLE, |
| 86 | { 0 } |
| 87 | }; |
| 88 | |
| 89 | static struct scsi_host_template lasi700_template = { |
| 90 | .name = "LASI SCSI 53c700", |
| 91 | .proc_name = "lasi700", |
| 92 | .this_id = 7, |
| 93 | .module = THIS_MODULE, |
| 94 | }; |
| 95 | MODULE_DEVICE_TABLE(parisc, lasi700_ids); |
| 96 | |
| 97 | static int __init |
| 98 | lasi700_probe(struct parisc_device *dev) |
| 99 | { |
Matthew Wilcox | 53f01bb | 2005-10-21 22:36:40 -0400 | [diff] [blame] | 100 | unsigned long base = dev->hpa.start + LASI_SCSI_CORE_OFFSET; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | struct NCR_700_Host_Parameters *hostdata; |
| 102 | struct Scsi_Host *host; |
| 103 | |
| 104 | hostdata = kmalloc(sizeof(*hostdata), GFP_KERNEL); |
| 105 | if (!hostdata) { |
| 106 | printk(KERN_ERR "%s: Failed to allocate host data\n", |
| 107 | dev->dev.bus_id); |
| 108 | return -ENOMEM; |
| 109 | } |
| 110 | memset(hostdata, 0, sizeof(struct NCR_700_Host_Parameters)); |
| 111 | |
| 112 | hostdata->dev = &dev->dev; |
| 113 | dma_set_mask(&dev->dev, DMA_32BIT_MASK); |
Helge Deller | 5076c15 | 2006-03-27 12:52:15 -0700 | [diff] [blame] | 114 | hostdata->base = ioremap_nocache(base, 0x100); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 115 | hostdata->differential = 0; |
| 116 | |
| 117 | if (dev->id.sversion == LASI_700_SVERSION) { |
| 118 | hostdata->clock = LASI700_CLOCK; |
| 119 | hostdata->force_le_on_be = 1; |
| 120 | } else { |
| 121 | hostdata->clock = LASI710_CLOCK; |
| 122 | hostdata->force_le_on_be = 0; |
| 123 | hostdata->chip710 = 1; |
| 124 | hostdata->dmode_extra = DMODE_FC2; |
Thomas Bogendoerfer | f67a9c1 | 2006-12-25 21:30:08 +0100 | [diff] [blame] | 125 | hostdata->burst_length = 8; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | } |
| 127 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | host = NCR_700_detect(&lasi700_template, hostdata, &dev->dev); |
| 129 | if (!host) |
| 130 | goto out_kfree; |
| 131 | host->this_id = 7; |
| 56fece2 | 2005-04-03 03:57:48 -0600 | [diff] [blame] | 132 | host->base = base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | host->irq = dev->irq; |
Thomas Gleixner | 1d6f359 | 2006-07-01 19:29:42 -0700 | [diff] [blame] | 134 | if(request_irq(dev->irq, NCR_700_intr, IRQF_SHARED, "lasi700", host)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | printk(KERN_ERR "lasi700: request_irq failed!\n"); |
| 136 | goto out_put_host; |
| 137 | } |
| 138 | |
| 139 | dev_set_drvdata(&dev->dev, host); |
| 140 | scsi_scan_host(host); |
| 141 | |
| 142 | return 0; |
| 143 | |
| 144 | out_put_host: |
| 145 | scsi_host_put(host); |
| 146 | out_kfree: |
| 147 | iounmap(hostdata->base); |
| 148 | kfree(hostdata); |
| 149 | return -ENODEV; |
| 150 | } |
| 151 | |
| 152 | static int __exit |
| 153 | lasi700_driver_remove(struct parisc_device *dev) |
| 154 | { |
| 155 | struct Scsi_Host *host = dev_get_drvdata(&dev->dev); |
| 156 | struct NCR_700_Host_Parameters *hostdata = |
| 157 | (struct NCR_700_Host_Parameters *)host->hostdata[0]; |
| 158 | |
| 159 | scsi_remove_host(host); |
| 160 | NCR_700_release(host); |
| 161 | free_irq(host->irq, host); |
| 162 | iounmap(hostdata->base); |
| 163 | kfree(hostdata); |
| 164 | |
| 165 | return 0; |
| 166 | } |
| 167 | |
| 168 | static struct parisc_driver lasi700_driver = { |
Matthew Wilcox | bdad1f8 | 2005-10-21 22:36:23 -0400 | [diff] [blame] | 169 | .name = "lasi_scsi", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | .id_table = lasi700_ids, |
| 171 | .probe = lasi700_probe, |
| 172 | .remove = __devexit_p(lasi700_driver_remove), |
| 173 | }; |
| 174 | |
| 175 | static int __init |
| 176 | lasi700_init(void) |
| 177 | { |
| 178 | return register_parisc_driver(&lasi700_driver); |
| 179 | } |
| 180 | |
| 181 | static void __exit |
| 182 | lasi700_exit(void) |
| 183 | { |
| 184 | unregister_parisc_driver(&lasi700_driver); |
| 185 | } |
| 186 | |
| 187 | module_init(lasi700_init); |
| 188 | module_exit(lasi700_exit); |