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 struct 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_bus_reset_handler = NCR5380_bus_reset, 122 .can_queue = 16, 123 .this_id = 7, 124 .sg_tablesize = SG_ALL, 125 .cmd_per_lun = 2, 126 .use_clustering = DISABLE_CLUSTERING, 127 .proc_name = "oakscsi", 128 }; 129 130 static int __devinit 131 oakscsi_probe(struct expansion_card *ec, const struct ecard_id *id) 132 { 133 struct Scsi_Host *host; 134 int ret = -ENOMEM; 135 136 host = scsi_host_alloc(&oakscsi_template, sizeof(struct NCR5380_hostdata)); 137 if (!host) 138 goto out; 139 140 host->io_port = ecard_address(ec, ECARD_MEMC, 0); 141 host->irq = IRQ_NONE; 142 host->n_io_port = 255; 143 144 ret = -EBUSY; 145 if (!request_region (host->io_port, host->n_io_port, "Oak SCSI")) 146 goto unreg; 147 148 NCR5380_init(host, 0); 149 150 printk("scsi%d: at port 0x%08lx irqs disabled", 151 host->host_no, host->io_port); 152 printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d", 153 host->can_queue, host->cmd_per_lun, OAKSCSI_PUBLIC_RELEASE); 154 printk("\nscsi%d:", host->host_no); 155 NCR5380_print_options(host); 156 printk("\n"); 157 158 ret = scsi_add_host(host, &ec->dev); 159 if (ret) 160 goto out_release; 161 162 scsi_scan_host(host); 163 goto out; 164 165 out_release: 166 release_region(host->io_port, host->n_io_port); 167 unreg: 168 scsi_host_put(host); 169 out: 170 return ret; 171 } 172 173 static void __devexit oakscsi_remove(struct expansion_card *ec) 174 { 175 struct Scsi_Host *host = ecard_get_drvdata(ec); 176 177 ecard_set_drvdata(ec, NULL); 178 scsi_remove_host(host); 179 180 NCR5380_exit(host); 181 release_region(host->io_port, host->n_io_port); 182 scsi_host_put(host); 183 } 184 185 static const struct ecard_id oakscsi_cids[] = { 186 { MANU_OAK, PROD_OAK_SCSI }, 187 { 0xffff, 0xffff } 188 }; 189 190 static struct ecard_driver oakscsi_driver = { 191 .probe = oakscsi_probe, 192 .remove = __devexit_p(oakscsi_remove), 193 .id_table = oakscsi_cids, 194 .drv = { 195 .name = "oakscsi", 196 }, 197 }; 198 199 static int __init oakscsi_init(void) 200 { 201 return ecard_register_driver(&oakscsi_driver); 202 } 203 204 static void __exit oakscsi_exit(void) 205 { 206 ecard_remove_driver(&oakscsi_driver); 207 } 208 209 module_init(oakscsi_init); 210 module_exit(oakscsi_exit); 211 212 MODULE_AUTHOR("Russell King"); 213 MODULE_DESCRIPTION("Oak SCSI driver"); 214 MODULE_LICENSE("GPL"); 215 216