^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Detection routine for the NCR53c710 based Amiga SCSI Controllers for Linux.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Amiga Technologies A4000T SCSI controller.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Written 1997 by Alan Hourihane <alanh@fairlite.demon.co.uk>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * plus modifications of the 53c7xx.c driver to support the Amiga.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Rewritten to use 53c700.c by Kars de Jong <jongk@linux-m68k.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <asm/amigahw.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <asm/amigaints.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <scsi/scsi_host.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <scsi/scsi_transport_spi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include "53c700.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) static struct scsi_host_template a4000t_scsi_driver_template = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) .name = "A4000T builtin SCSI",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) .proc_name = "A4000t",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) .this_id = 7,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) .module = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define A4000T_SCSI_OFFSET 0x40
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) static int __init amiga_a4000t_scsi_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) struct resource *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) phys_addr_t scsi_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) struct NCR_700_Host_Parameters *hostdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) struct Scsi_Host *host;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) if (!res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) if (!request_mem_region(res->start, resource_size(res),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) "A4000T builtin SCSI"))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) return -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) if (!hostdata) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) dev_err(&pdev->dev, "Failed to allocate host data\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) goto out_release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) scsi_addr = res->start + A4000T_SCSI_OFFSET;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) /* Fill in the required pieces of hostdata */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) hostdata->base = ZTWO_VADDR(scsi_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) hostdata->clock = 50;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) hostdata->chip710 = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) hostdata->dmode_extra = DMODE_FC2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) hostdata->dcntl_extra = EA_710;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) /* and register the chip */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) host = NCR_700_detect(&a4000t_scsi_driver_template, hostdata,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) &pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) if (!host) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) dev_err(&pdev->dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) "No host detected; board configuration problem?\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) host->this_id = 7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) host->base = scsi_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) host->irq = IRQ_AMIGA_PORTS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) if (request_irq(host->irq, NCR_700_intr, IRQF_SHARED, "a4000t-scsi",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) host)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) dev_err(&pdev->dev, "request_irq failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) goto out_put_host;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) platform_set_drvdata(pdev, host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) scsi_scan_host(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) out_put_host:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) scsi_host_put(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) out_free:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) kfree(hostdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) out_release:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) release_mem_region(res->start, resource_size(res));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) static int __exit amiga_a4000t_scsi_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) struct Scsi_Host *host = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) struct NCR_700_Host_Parameters *hostdata = shost_priv(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) scsi_remove_host(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) NCR_700_release(host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) kfree(hostdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) free_irq(host->irq, host);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) release_mem_region(res->start, resource_size(res));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) static struct platform_driver amiga_a4000t_scsi_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) .remove = __exit_p(amiga_a4000t_scsi_remove),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) .name = "amiga-a4000t-scsi",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) module_platform_driver_probe(amiga_a4000t_scsi_driver, amiga_a4000t_scsi_probe);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) MODULE_AUTHOR("Alan Hourihane <alanh@fairlite.demon.co.uk> / "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) "Kars de Jong <jongk@linux-m68k.org>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) MODULE_DESCRIPTION("Amiga A4000T NCR53C710 driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) MODULE_ALIAS("platform:amiga-a4000t-scsi");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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