1 /* 2 * Oak Generic NCR5380 driver 3 * 4 * Copyright 1995-2002, Russell King 5 */ 6 7 #include <linux/module.h> 8 #include <linux/signal.h> 9 #include <linux/sched.h> 10 #include <linux/ioport.h> 11 #include <linux/delay.h> 12 #include <linux/blkdev.h> 13 #include <linux/init.h> 14 15 #include <asm/ecard.h> 16 #include <asm/io.h> 17 #include <asm/system.h> 18 19 #include "../scsi.h" 20 #include <scsi/scsi_host.h> 21 22 #define AUTOSENSE 23 /*#define PSEUDO_DMA*/ 24 25 #define OAKSCSI_PUBLIC_RELEASE 1 26 27 #define NCR5380_read(reg) oakscsi_read(_instance, reg) 28 #define NCR5380_write(reg, value) oakscsi_write(_instance, reg, value) 29 #define NCR5380_intr oakscsi_intr 30 #define NCR5380_queue_command oakscsi_queue_command 31 #define NCR5380_proc_info oakscsi_proc_info 32 33 #define NCR5380_implementation_fields int port, ctrl 34 #define NCR5380_local_declare() struct Scsi_Host *_instance 35 #define NCR5380_setup(instance) _instance = instance 36 37 #define BOARD_NORMAL 0 38 #define BOARD_NCR53C400 1 39 40 #include "../NCR5380.h" 41 42 #undef START_DMA_INITIATOR_RECEIVE_REG 43 #define START_DMA_INITIATOR_RECEIVE_REG (7 + 128) 44 45 const char * oakscsi_info (struct Scsi_Host *spnt) 46 { 47 return ""; 48 } 49 50 #define STAT(p) inw(p + 144) 51 extern void inswb(int from, void *to, int len); 52 53 static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *addr, 54 int len) 55 { 56 int iobase = instance->io_port; 57 printk("writing %p len %d\n",addr, len); 58 if(!len) return -1; 59 60 while(1) 61 { 62 int status; 63 while(((status = STAT(iobase)) & 0x100)==0); 64 } 65 } 66 67 static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *addr, 68 int len) 69 { 70 int iobase = instance->io_port; 71 printk("reading %p len %d\n", addr, len); 72 while(len > 0) 73 { 74 int status, timeout; 75 unsigned long b; 76 77 timeout = 0x01FFFFFF; 78 79 while(((status = STAT(iobase)) & 0x100)==0) 80 { 81 timeout--; 82 if(status & 0x200 || !timeout) 83 { 84 printk("status = %08X\n",status); 85 return 1; 86 } 87 } 88 if(len >= 128) 89 { 90 inswb(iobase + 136, addr, 128); 91 addr += 128; 92 len -= 128; 93 } 94 else 95 { 96 b = (unsigned long) inw(iobase + 136); 97 *addr ++ = b; 98 len -= 1; 99 if(len) 100 *addr ++ = b>>8; 101 len -= 1; 102 } 103 } 104 return 0; 105 } 106 107 #define oakscsi_read(instance,reg) (inb((instance)->io_port + (reg))) 108 #define oakscsi_write(instance,reg,val) (outb((val), (instance)->io_port + (reg))) 109 110 #undef STAT 111 112 #include "../NCR5380.c" 113 114 static Scsi_Host_Template oakscsi_template = { 115 .module = THIS_MODULE, 116 .proc_info = oakscsi_proc_info, 117 .name = "Oak 16-bit SCSI", 118 .info = oakscsi_info, 119 .queuecommand = oakscsi_queue_command, 120 .eh_abort_handler = NCR5380_abort, 121 .eh_device_reset_handler= NCR5380_device_reset, 122 .eh_bus_reset_handler = NCR5380_bus_reset, 123 .eh_host_reset_handler = NCR5380_host_reset, 124 .can_queue = 16, 125 .this_id = 7, 126 .sg_tablesize = SG_ALL, 127 .cmd_per_lun = 2, 128 .use_clustering = DISABLE_CLUSTERING, 129 .proc_name = "oakscsi", 130 }; 131 132 static int __devinit 133 oakscsi_probe(struct expansion_card *ec, const struct ecard_id *id) 134 { 135 struct Scsi_Host *host; 136 int ret = -ENOMEM; 137 138 host = scsi_host_alloc(&oakscsi_template, sizeof(struct NCR5380_hostdata)); 139 if (!host) 140 goto out; 141 142 host->io_port = ecard_address(ec, ECARD_MEMC, 0); 143 host->irq = IRQ_NONE; 144 host->n_io_port = 255; 145 146 ret = -EBUSY; 147 if (!request_region (host->io_port, host->n_io_port, "Oak SCSI")) 148 goto unreg; 149 150 NCR5380_init(host, 0); 151 152 printk("scsi%d: at port 0x%08lx irqs disabled", 153 host->host_no, host->io_port); 154 printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d", 155 host->can_queue, host->cmd_per_lun, OAKSCSI_PUBLIC_RELEASE); 156 printk("\nscsi%d:", host->host_no); 157 NCR5380_print_options(host); 158 printk("\n"); 159 160 ret = scsi_add_host(host, &ec->dev); 161 if (ret) 162 goto out_release; 163 164 scsi_scan_host(host); 165 goto out; 166 167 out_release: 168 release_region(host->io_port, host->n_io_port); 169 unreg: 170 scsi_host_put(host); 171 out: 172 return ret; 173 } 174 175 static void __devexit oakscsi_remove(struct expansion_card *ec) 176 { 177 struct Scsi_Host *host = ecard_get_drvdata(ec); 178 179 ecard_set_drvdata(ec, NULL); 180 scsi_remove_host(host); 181 182 NCR5380_exit(host); 183 release_region(host->io_port, host->n_io_port); 184 scsi_host_put(host); 185 } 186 187 static const struct ecard_id oakscsi_cids[] = { 188 { MANU_OAK, PROD_OAK_SCSI }, 189 { 0xffff, 0xffff } 190 }; 191 192 static struct ecard_driver oakscsi_driver = { 193 .probe = oakscsi_probe, 194 .remove = __devexit_p(oakscsi_remove), 195 .id_table = oakscsi_cids, 196 .drv = { 197 .name = "oakscsi", 198 }, 199 }; 200 201 static int __init oakscsi_init(void) 202 { 203 return ecard_register_driver(&oakscsi_driver); 204 } 205 206 static void __exit oakscsi_exit(void) 207 { 208 ecard_remove_driver(&oakscsi_driver); 209 } 210 211 module_init(oakscsi_init); 212 module_exit(oakscsi_exit); 213 214 MODULE_AUTHOR("Russell King"); 215 MODULE_DESCRIPTION("Oak SCSI driver"); 216 MODULE_LICENSE("GPL"); 217 218