1 /* -*- mode: c; c-basic-offset: 8 -*- */
3 /* PARISC LASI driver for the 53c700 chip
5 * Copyright (C) 2001 by James.Bottomley@HansenPartnership.com
6 **-----------------------------------------------------------------------------
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.
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.
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.
22 **-----------------------------------------------------------------------------
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.
30 * Thanks also go to Linuxcare Inc. for providing several PARISC
31 * machines for me to debug the driver on.
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>
40 #include <linux/blkdev.h>
41 #include <linux/ioport.h>
42 #include <linux/dma-mapping.h>
45 #include <asm/pgtable.h>
47 #include <asm/hardware.h>
48 #include <asm/parisc-device.h>
49 #include <asm/delay.h>
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>
58 MODULE_AUTHOR("James Bottomley");
59 MODULE_DESCRIPTION("lasi700 SCSI Driver");
60 MODULE_LICENSE("GPL");
62 #define LASI_700_SVERSION 0x00071
63 #define LASI_710_SVERSION 0x00082
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, \
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, \
79 #define LASI700_CLOCK 25
80 #define LASI710_CLOCK 40
81 #define LASI_SCSI_CORE_OFFSET 0x100
83 static struct parisc_device_id lasi700_ids[] = {
89 static struct scsi_host_template lasi700_template = {
90 .name = "LASI SCSI 53c700",
91 .proc_name = "lasi700",
93 .module = THIS_MODULE,
95 MODULE_DEVICE_TABLE(parisc, lasi700_ids);
98 lasi700_probe(struct parisc_device *dev)
100 unsigned long base = dev->hpa.start + LASI_SCSI_CORE_OFFSET;
101 struct NCR_700_Host_Parameters *hostdata;
102 struct Scsi_Host *host;
104 hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL);
106 dev_printk(KERN_ERR, dev, "Failed to allocate host data\n");
110 hostdata->dev = &dev->dev;
111 dma_set_mask(&dev->dev, DMA_32BIT_MASK);
112 hostdata->base = ioremap_nocache(base, 0x100);
113 hostdata->differential = 0;
115 if (dev->id.sversion == LASI_700_SVERSION) {
116 hostdata->clock = LASI700_CLOCK;
117 hostdata->force_le_on_be = 1;
119 hostdata->clock = LASI710_CLOCK;
120 hostdata->force_le_on_be = 0;
121 hostdata->chip710 = 1;
122 hostdata->dmode_extra = DMODE_FC2;
123 hostdata->burst_length = 8;
126 host = NCR_700_detect(&lasi700_template, hostdata, &dev->dev);
131 host->irq = dev->irq;
132 if(request_irq(dev->irq, NCR_700_intr, IRQF_SHARED, "lasi700", host)) {
133 printk(KERN_ERR "lasi700: request_irq failed!\n");
137 dev_set_drvdata(&dev->dev, host);
138 scsi_scan_host(host);
145 iounmap(hostdata->base);
151 lasi700_driver_remove(struct parisc_device *dev)
153 struct Scsi_Host *host = dev_get_drvdata(&dev->dev);
154 struct NCR_700_Host_Parameters *hostdata =
155 (struct NCR_700_Host_Parameters *)host->hostdata[0];
157 scsi_remove_host(host);
158 NCR_700_release(host);
159 free_irq(host->irq, host);
160 iounmap(hostdata->base);
166 static struct parisc_driver lasi700_driver = {
168 .id_table = lasi700_ids,
169 .probe = lasi700_probe,
170 .remove = __devexit_p(lasi700_driver_remove),
176 return register_parisc_driver(&lasi700_driver);
182 unregister_parisc_driver(&lasi700_driver);
185 module_init(lasi700_init);
186 module_exit(lasi700_exit);