1506c7bbcSKars de Jong /* 2506c7bbcSKars de Jong * Detection routine for the NCR53c710 based MVME16x SCSI Controllers for Linux. 3506c7bbcSKars de Jong * 4506c7bbcSKars de Jong * Based on work by Alan Hourihane 5506c7bbcSKars de Jong * 6506c7bbcSKars de Jong * Rewritten to use 53c700.c by Kars de Jong <jongk@linux-m68k.org> 7506c7bbcSKars de Jong */ 8506c7bbcSKars de Jong 9506c7bbcSKars de Jong #include <linux/module.h> 10506c7bbcSKars de Jong #include <linux/blkdev.h> 11506c7bbcSKars de Jong #include <linux/device.h> 12506c7bbcSKars de Jong #include <linux/platform_device.h> 13506c7bbcSKars de Jong #include <linux/init.h> 14506c7bbcSKars de Jong #include <linux/interrupt.h> 15506c7bbcSKars de Jong #include <asm/mvme16xhw.h> 16506c7bbcSKars de Jong #include <scsi/scsi_host.h> 17506c7bbcSKars de Jong #include <scsi/scsi_device.h> 18506c7bbcSKars de Jong #include <scsi/scsi_transport.h> 19506c7bbcSKars de Jong #include <scsi/scsi_transport_spi.h> 20506c7bbcSKars de Jong 21506c7bbcSKars de Jong #include "53c700.h" 22506c7bbcSKars de Jong 23506c7bbcSKars de Jong MODULE_AUTHOR("Kars de Jong <jongk@linux-m68k.org>"); 24506c7bbcSKars de Jong MODULE_DESCRIPTION("MVME16x NCR53C710 driver"); 25506c7bbcSKars de Jong MODULE_LICENSE("GPL"); 26506c7bbcSKars de Jong 27506c7bbcSKars de Jong static struct scsi_host_template mvme16x_scsi_driver_template = { 28506c7bbcSKars de Jong .name = "MVME16x NCR53c710 SCSI", 29506c7bbcSKars de Jong .proc_name = "MVME16x", 30506c7bbcSKars de Jong .this_id = 7, 31506c7bbcSKars de Jong .module = THIS_MODULE, 32506c7bbcSKars de Jong }; 33506c7bbcSKars de Jong 34506c7bbcSKars de Jong static struct platform_device *mvme16x_scsi_device; 35506c7bbcSKars de Jong 36506c7bbcSKars de Jong static __devinit int 377a192ec3SMing Lei mvme16x_probe(struct platform_device *dev) 38506c7bbcSKars de Jong { 39506c7bbcSKars de Jong struct Scsi_Host * host = NULL; 40506c7bbcSKars de Jong struct NCR_700_Host_Parameters *hostdata; 41506c7bbcSKars de Jong 42506c7bbcSKars de Jong if (!MACH_IS_MVME16x) 43506c7bbcSKars de Jong goto out; 44506c7bbcSKars de Jong 45506c7bbcSKars de Jong if (mvme16x_config & MVME16x_CONFIG_NO_SCSICHIP) { 46506c7bbcSKars de Jong printk(KERN_INFO "mvme16x-scsi: detection disabled, " 47506c7bbcSKars de Jong "SCSI chip not present\n"); 48506c7bbcSKars de Jong goto out; 49506c7bbcSKars de Jong } 50506c7bbcSKars de Jong 51bbfbbbc1SMariusz Kozlowski hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL); 52506c7bbcSKars de Jong if (hostdata == NULL) { 53506c7bbcSKars de Jong printk(KERN_ERR "mvme16x-scsi: " 54506c7bbcSKars de Jong "Failed to allocate host data\n"); 55506c7bbcSKars de Jong goto out; 56506c7bbcSKars de Jong } 57506c7bbcSKars de Jong 58506c7bbcSKars de Jong /* Fill in the required pieces of hostdata */ 59506c7bbcSKars de Jong hostdata->base = (void __iomem *)0xfff47000UL; 60506c7bbcSKars de Jong hostdata->clock = 50; /* XXX - depends on the CPU clock! */ 61506c7bbcSKars de Jong hostdata->chip710 = 1; 62506c7bbcSKars de Jong hostdata->dmode_extra = DMODE_FC2; 63506c7bbcSKars de Jong hostdata->dcntl_extra = EA_710; 64506c7bbcSKars de Jong hostdata->ctest7_extra = CTEST7_TT1; 65506c7bbcSKars de Jong 66506c7bbcSKars de Jong /* and register the chip */ 67506c7bbcSKars de Jong host = NCR_700_detect(&mvme16x_scsi_driver_template, hostdata, dev); 68506c7bbcSKars de Jong if (!host) { 69506c7bbcSKars de Jong printk(KERN_ERR "mvme16x-scsi: No host detected; " 70506c7bbcSKars de Jong "board configuration problem?\n"); 71506c7bbcSKars de Jong goto out_free; 72506c7bbcSKars de Jong } 73506c7bbcSKars de Jong host->this_id = 7; 74506c7bbcSKars de Jong host->base = 0xfff47000UL; 75506c7bbcSKars de Jong host->irq = MVME16x_IRQ_SCSI; 76506c7bbcSKars de Jong if (request_irq(host->irq, NCR_700_intr, 0, "mvme16x-scsi", host)) { 77506c7bbcSKars de Jong printk(KERN_ERR "mvme16x-scsi: request_irq failed\n"); 78506c7bbcSKars de Jong goto out_put_host; 79506c7bbcSKars de Jong } 80506c7bbcSKars de Jong 81506c7bbcSKars de Jong /* Enable scsi chip ints */ 82506c7bbcSKars de Jong { 83506c7bbcSKars de Jong volatile unsigned long v; 84506c7bbcSKars de Jong 85506c7bbcSKars de Jong /* Enable scsi interrupts at level 4 in PCCchip2 */ 86506c7bbcSKars de Jong v = in_be32(0xfff4202c); 87506c7bbcSKars de Jong v = (v & ~0xff) | 0x10 | 4; 88506c7bbcSKars de Jong out_be32(0xfff4202c, v); 89506c7bbcSKars de Jong } 90506c7bbcSKars de Jong 917a192ec3SMing Lei platform_set_drvdata(dev, host); 92506c7bbcSKars de Jong scsi_scan_host(host); 93506c7bbcSKars de Jong 94506c7bbcSKars de Jong return 0; 95506c7bbcSKars de Jong 96506c7bbcSKars de Jong out_put_host: 97506c7bbcSKars de Jong scsi_host_put(host); 98506c7bbcSKars de Jong out_free: 99506c7bbcSKars de Jong kfree(hostdata); 100506c7bbcSKars de Jong out: 101506c7bbcSKars de Jong return -ENODEV; 102506c7bbcSKars de Jong } 103506c7bbcSKars de Jong 104506c7bbcSKars de Jong static __devexit int 1057a192ec3SMing Lei mvme16x_device_remove(struct platform_device *dev) 106506c7bbcSKars de Jong { 1077a192ec3SMing Lei struct Scsi_Host *host = platform_get_drvdata(dev); 108506c7bbcSKars de Jong struct NCR_700_Host_Parameters *hostdata = shost_priv(host); 109506c7bbcSKars de Jong 110506c7bbcSKars de Jong /* Disable scsi chip ints */ 111506c7bbcSKars de Jong { 112506c7bbcSKars de Jong volatile unsigned long v; 113506c7bbcSKars de Jong 114506c7bbcSKars de Jong v = in_be32(0xfff4202c); 115506c7bbcSKars de Jong v &= ~0x10; 116506c7bbcSKars de Jong out_be32(0xfff4202c, v); 117506c7bbcSKars de Jong } 118506c7bbcSKars de Jong scsi_remove_host(host); 119506c7bbcSKars de Jong NCR_700_release(host); 120506c7bbcSKars de Jong kfree(hostdata); 121506c7bbcSKars de Jong free_irq(host->irq, host); 122506c7bbcSKars de Jong 123506c7bbcSKars de Jong return 0; 124506c7bbcSKars de Jong } 125506c7bbcSKars de Jong 1267a192ec3SMing Lei static struct platform_driver mvme16x_scsi_driver = { 1277a192ec3SMing Lei .driver = { 128506c7bbcSKars de Jong .name = "mvme16x-scsi", 1297a192ec3SMing Lei .owner = THIS_MODULE, 1307a192ec3SMing Lei }, 131506c7bbcSKars de Jong .probe = mvme16x_probe, 132506c7bbcSKars de Jong .remove = __devexit_p(mvme16x_device_remove), 133506c7bbcSKars de Jong }; 134506c7bbcSKars de Jong 135506c7bbcSKars de Jong static int __init mvme16x_scsi_init(void) 136506c7bbcSKars de Jong { 137506c7bbcSKars de Jong int err; 138506c7bbcSKars de Jong 1397a192ec3SMing Lei err = platform_driver_register(&mvme16x_scsi_driver); 140506c7bbcSKars de Jong if (err) 141506c7bbcSKars de Jong return err; 142506c7bbcSKars de Jong 143506c7bbcSKars de Jong mvme16x_scsi_device = platform_device_register_simple("mvme16x-scsi", 144506c7bbcSKars de Jong -1, NULL, 0); 145506c7bbcSKars de Jong if (IS_ERR(mvme16x_scsi_device)) { 1467a192ec3SMing Lei platform_driver_unregister(&mvme16x_scsi_driver); 147506c7bbcSKars de Jong return PTR_ERR(mvme16x_scsi_device); 148506c7bbcSKars de Jong } 149506c7bbcSKars de Jong 150506c7bbcSKars de Jong return 0; 151506c7bbcSKars de Jong } 152506c7bbcSKars de Jong 153506c7bbcSKars de Jong static void __exit mvme16x_scsi_exit(void) 154506c7bbcSKars de Jong { 155506c7bbcSKars de Jong platform_device_unregister(mvme16x_scsi_device); 1567a192ec3SMing Lei platform_driver_unregister(&mvme16x_scsi_driver); 157506c7bbcSKars de Jong } 158506c7bbcSKars de Jong 159506c7bbcSKars de Jong module_init(mvme16x_scsi_init); 160506c7bbcSKars de Jong module_exit(mvme16x_scsi_exit); 161