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125 lines
3.2 KiB
125 lines
3.2 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Detection routine for the NCR53c710 based Amiga SCSI Controllers for Linux. |
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* Amiga Technologies A4000T SCSI controller. |
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* |
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* Written 1997 by Alan Hourihane <[email protected]> |
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* plus modifications of the 53c7xx.c driver to support the Amiga. |
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* |
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* Rewritten to use 53c700.c by Kars de Jong <[email protected]> |
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*/ |
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#include <linux/module.h> |
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#include <linux/platform_device.h> |
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#include <linux/init.h> |
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#include <linux/interrupt.h> |
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#include <linux/slab.h> |
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#include <asm/amigahw.h> |
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#include <asm/amigaints.h> |
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#include <scsi/scsi_host.h> |
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#include <scsi/scsi_transport_spi.h> |
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#include "53c700.h" |
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static struct scsi_host_template a4000t_scsi_driver_template = { |
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.name = "A4000T builtin SCSI", |
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.proc_name = "A4000t", |
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.this_id = 7, |
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.module = THIS_MODULE, |
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}; |
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#define A4000T_SCSI_OFFSET 0x40 |
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static int __init amiga_a4000t_scsi_probe(struct platform_device *pdev) |
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{ |
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struct resource *res; |
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phys_addr_t scsi_addr; |
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struct NCR_700_Host_Parameters *hostdata; |
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struct Scsi_Host *host; |
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
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if (!res) |
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return -ENODEV; |
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if (!request_mem_region(res->start, resource_size(res), |
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"A4000T builtin SCSI")) |
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return -EBUSY; |
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hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters), |
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GFP_KERNEL); |
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if (!hostdata) { |
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dev_err(&pdev->dev, "Failed to allocate host data\n"); |
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goto out_release; |
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} |
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scsi_addr = res->start + A4000T_SCSI_OFFSET; |
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/* Fill in the required pieces of hostdata */ |
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hostdata->base = ZTWO_VADDR(scsi_addr); |
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hostdata->clock = 50; |
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hostdata->chip710 = 1; |
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hostdata->dmode_extra = DMODE_FC2; |
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hostdata->dcntl_extra = EA_710; |
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/* and register the chip */ |
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host = NCR_700_detect(&a4000t_scsi_driver_template, hostdata, |
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&pdev->dev); |
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if (!host) { |
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dev_err(&pdev->dev, |
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"No host detected; board configuration problem?\n"); |
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goto out_free; |
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} |
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host->this_id = 7; |
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host->base = scsi_addr; |
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host->irq = IRQ_AMIGA_PORTS; |
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if (request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "a4000t-scsi", |
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host)) { |
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dev_err(&pdev->dev, "request_irq failed\n"); |
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goto out_put_host; |
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} |
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platform_set_drvdata(pdev, 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_free: |
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kfree(hostdata); |
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out_release: |
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release_mem_region(res->start, resource_size(res)); |
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return -ENODEV; |
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} |
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static int __exit amiga_a4000t_scsi_remove(struct platform_device *pdev) |
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{ |
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struct Scsi_Host *host = platform_get_drvdata(pdev); |
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struct NCR_700_Host_Parameters *hostdata = shost_priv(host); |
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struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
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scsi_remove_host(host); |
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NCR_700_release(host); |
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kfree(hostdata); |
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free_irq(host->irq, host); |
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release_mem_region(res->start, resource_size(res)); |
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return 0; |
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} |
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static struct platform_driver amiga_a4000t_scsi_driver = { |
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.remove = __exit_p(amiga_a4000t_scsi_remove), |
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.driver = { |
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.name = "amiga-a4000t-scsi", |
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}, |
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}; |
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module_platform_driver_probe(amiga_a4000t_scsi_driver, amiga_a4000t_scsi_probe); |
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MODULE_AUTHOR("Alan Hourihane <[email protected]> / " |
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"Kars de Jong <[email protected]>"); |
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MODULE_DESCRIPTION("Amiga A4000T NCR53C710 driver"); |
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MODULE_LICENSE("GPL"); |
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MODULE_ALIAS("platform:amiga-a4000t-scsi");
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