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171 lines
4.0 KiB
171 lines
4.0 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* PARISC LASI driver for the 53c700 chip |
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* |
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* Copyright (C) 2001 by [email protected] |
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**----------------------------------------------------------------------------- |
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** |
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** |
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**----------------------------------------------------------------------------- |
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*/ |
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/* |
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* Many thanks to Richard Hirst <[email protected]> for patiently |
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* debugging this driver on the parisc architecture and suggesting |
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* many improvements and bug fixes. |
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* |
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* Thanks also go to Linuxcare Inc. for providing several PARISC |
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* machines for me to debug the driver on. |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/init.h> |
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#include <linux/types.h> |
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#include <linux/stat.h> |
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#include <linux/mm.h> |
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#include <linux/blkdev.h> |
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#include <linux/ioport.h> |
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#include <linux/dma-mapping.h> |
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#include <linux/slab.h> |
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#include <asm/page.h> |
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#include <asm/irq.h> |
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#include <asm/hardware.h> |
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#include <asm/parisc-device.h> |
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#include <asm/delay.h> |
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#include <scsi/scsi_host.h> |
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#include <scsi/scsi_device.h> |
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#include <scsi/scsi_transport.h> |
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#include <scsi/scsi_transport_spi.h> |
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#include "53c700.h" |
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MODULE_AUTHOR("James Bottomley"); |
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MODULE_DESCRIPTION("lasi700 SCSI Driver"); |
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MODULE_LICENSE("GPL"); |
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#define LASI_700_SVERSION 0x00071 |
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#define LASI_710_SVERSION 0x00082 |
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#define LASI700_ID_TABLE { \ |
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.hw_type = HPHW_FIO, \ |
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.sversion = LASI_700_SVERSION, \ |
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.hversion = HVERSION_ANY_ID, \ |
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.hversion_rev = HVERSION_REV_ANY_ID, \ |
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} |
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#define LASI710_ID_TABLE { \ |
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.hw_type = HPHW_FIO, \ |
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.sversion = LASI_710_SVERSION, \ |
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.hversion = HVERSION_ANY_ID, \ |
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.hversion_rev = HVERSION_REV_ANY_ID, \ |
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} |
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#define LASI700_CLOCK 25 |
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#define LASI710_CLOCK 40 |
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#define LASI_SCSI_CORE_OFFSET 0x100 |
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static const struct parisc_device_id lasi700_ids[] __initconst = { |
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LASI700_ID_TABLE, |
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LASI710_ID_TABLE, |
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{ 0 } |
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}; |
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static struct scsi_host_template lasi700_template = { |
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.name = "LASI SCSI 53c700", |
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.proc_name = "lasi700", |
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.this_id = 7, |
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.module = THIS_MODULE, |
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}; |
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MODULE_DEVICE_TABLE(parisc, lasi700_ids); |
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static int __init |
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lasi700_probe(struct parisc_device *dev) |
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{ |
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unsigned long base = dev->hpa.start + LASI_SCSI_CORE_OFFSET; |
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struct NCR_700_Host_Parameters *hostdata; |
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struct Scsi_Host *host; |
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hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL); |
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if (!hostdata) { |
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dev_printk(KERN_ERR, &dev->dev, "Failed to allocate host data\n"); |
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return -ENOMEM; |
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} |
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hostdata->dev = &dev->dev; |
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dma_set_mask(&dev->dev, DMA_BIT_MASK(32)); |
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hostdata->base = ioremap(base, 0x100); |
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hostdata->differential = 0; |
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if (dev->id.sversion == LASI_700_SVERSION) { |
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hostdata->clock = LASI700_CLOCK; |
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hostdata->force_le_on_be = 1; |
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} else { |
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hostdata->clock = LASI710_CLOCK; |
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hostdata->force_le_on_be = 0; |
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hostdata->chip710 = 1; |
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hostdata->dmode_extra = DMODE_FC2; |
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hostdata->burst_length = 8; |
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} |
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host = NCR_700_detect(&lasi700_template, hostdata, &dev->dev); |
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if (!host) |
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goto out_kfree; |
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host->this_id = 7; |
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host->base = base; |
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host->irq = dev->irq; |
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if(request_irq(dev->irq, NCR_700_intr, IRQF_SHARED, "lasi700", host)) { |
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printk(KERN_ERR "lasi700: request_irq failed!\n"); |
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goto out_put_host; |
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} |
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dev_set_drvdata(&dev->dev, host); |
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scsi_scan_host(host); |
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return 0; |
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out_put_host: |
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scsi_host_put(host); |
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out_kfree: |
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iounmap(hostdata->base); |
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kfree(hostdata); |
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return -ENODEV; |
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} |
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static void __exit |
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lasi700_driver_remove(struct parisc_device *dev) |
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{ |
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struct Scsi_Host *host = dev_get_drvdata(&dev->dev); |
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struct NCR_700_Host_Parameters *hostdata = |
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(struct NCR_700_Host_Parameters *)host->hostdata[0]; |
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scsi_remove_host(host); |
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NCR_700_release(host); |
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free_irq(host->irq, host); |
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iounmap(hostdata->base); |
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kfree(hostdata); |
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} |
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static struct parisc_driver lasi700_driver __refdata = { |
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.name = "lasi_scsi", |
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.id_table = lasi700_ids, |
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.probe = lasi700_probe, |
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.remove = __exit_p(lasi700_driver_remove), |
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}; |
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static int __init |
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lasi700_init(void) |
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{ |
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return register_parisc_driver(&lasi700_driver); |
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} |
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static void __exit |
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lasi700_exit(void) |
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{ |
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unregister_parisc_driver(&lasi700_driver); |
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} |
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module_init(lasi700_init); |
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module_exit(lasi700_exit);
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