/* * Oak Generic NCR5380 driver * * Copyright 1995-2002, Russell King */ #include <linux/module.h> #include <linux/signal.h> #include <linux/ioport.h> #include <linux/delay.h> #include <linux/blkdev.h> #include <linux/init.h> #include <asm/ecard.h> #include <asm/io.h> #include <asm/system.h> #include "../scsi.h" #include <scsi/scsi_host.h> #define AUTOSENSE /*#define PSEUDO_DMA*/ #define OAKSCSI_PUBLIC_RELEASE 1 #define priv(host) ((struct NCR5380_hostdata *)(host)->hostdata) #define NCR5380_local_declare() void __iomem *_base #define NCR5380_setup(host) _base = priv(host)->base #define NCR5380_read(reg) readb(_base + ((reg) << 2)) #define NCR5380_write(reg, value) writeb(value, _base + ((reg) << 2)) #define NCR5380_intr oakscsi_intr #define NCR5380_queue_command oakscsi_queue_command #define NCR5380_proc_info oakscsi_proc_info #define NCR5380_implementation_fields \ void __iomem *base #define BOARD_NORMAL 0 #define BOARD_NCR53C400 1 #include "../NCR5380.h" #undef START_DMA_INITIATOR_RECEIVE_REG #define START_DMA_INITIATOR_RECEIVE_REG (128 + 7) const char * oakscsi_info (struct Scsi_Host *spnt) { return ""; } #define STAT ((128 + 16) << 2) #define DATA ((128 + 8) << 2) static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *addr, int len) { void __iomem *base = priv(instance)->base; printk("writing %p len %d\n",addr, len); if(!len) return -1; while(1) { int status; while (((status = readw(base + STAT)) & 0x100)==0); } } static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *addr, int len) { void __iomem *base = priv(instance)->base; printk("reading %p len %d\n", addr, len); while(len > 0) { unsigned int status, timeout; unsigned long b; timeout = 0x01FFFFFF; while (((status = readw(base + STAT)) & 0x100)==0) { timeout--; if(status & 0x200 || !timeout) { printk("status = %08X\n", status); return 1; } } if(len >= 128) { readsw(base + DATA, addr, 128); addr += 128; len -= 128; } else { b = (unsigned long) readw(base + DATA); *addr ++ = b; len -= 1; if(len) *addr ++ = b>>8; len -= 1; } } return 0; } #undef STAT #undef DATA #include "../NCR5380.c" static struct scsi_host_template oakscsi_template = { .module = THIS_MODULE, .proc_info = oakscsi_proc_info, .name = "Oak 16-bit SCSI", .info = oakscsi_info, .queuecommand = oakscsi_queue_command, .eh_abort_handler = NCR5380_abort, .eh_bus_reset_handler = NCR5380_bus_reset, .can_queue = 16, .this_id = 7, .sg_tablesize = SG_ALL, .cmd_per_lun = 2, .use_clustering = DISABLE_CLUSTERING, .proc_name = "oakscsi", }; static int __devinit oakscsi_probe(struct expansion_card *ec, const struct ecard_id *id) { struct Scsi_Host *host; int ret = -ENOMEM; ret = ecard_request_resources(ec); if (ret) goto out; host = scsi_host_alloc(&oakscsi_template, sizeof(struct NCR5380_hostdata)); if (!host) { ret = -ENOMEM; goto release; } priv(host)->base = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC), ecard_resource_len(ec, ECARD_RES_MEMC)); if (!priv(host)->base) { ret = -ENOMEM; goto unreg; } host->irq = IRQ_NONE; host->n_io_port = 255; NCR5380_init(host, 0); printk("scsi%d: at port 0x%08lx irqs disabled", host->host_no, host->io_port); printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d", host->can_queue, host->cmd_per_lun, OAKSCSI_PUBLIC_RELEASE); printk("\nscsi%d:", host->host_no); NCR5380_print_options(host); printk("\n"); ret = scsi_add_host(host, &ec->dev); if (ret) goto out_unmap; scsi_scan_host(host); goto out; out_unmap: iounmap(priv(host)->base); unreg: scsi_host_put(host); release: ecard_release_resources(ec); out: return ret; } static void __devexit oakscsi_remove(struct expansion_card *ec) { struct Scsi_Host *host = ecard_get_drvdata(ec); ecard_set_drvdata(ec, NULL); scsi_remove_host(host); NCR5380_exit(host); iounmap(priv(host)->base); scsi_host_put(host); ecard_release_resources(ec); } static const struct ecard_id oakscsi_cids[] = { { MANU_OAK, PROD_OAK_SCSI }, { 0xffff, 0xffff } }; static struct ecard_driver oakscsi_driver = { .probe = oakscsi_probe, .remove = __devexit_p(oakscsi_remove), .id_table = oakscsi_cids, .drv = { .name = "oakscsi", }, }; static int __init oakscsi_init(void) { return ecard_register_driver(&oakscsi_driver); } static void __exit oakscsi_exit(void) { ecard_remove_driver(&oakscsi_driver); } module_init(oakscsi_init); module_exit(oakscsi_exit); MODULE_AUTHOR("Russell King"); MODULE_DESCRIPTION("Oak SCSI driver"); MODULE_LICENSE("GPL");