1 // SPDX-License-Identifier: GPL-2.0 2 3 #include <linux/module.h> 4 #include <linux/io.h> 5 #include <linux/isa.h> 6 #include <scsi/scsi_host.h> 7 #include "fdomain.h" 8 9 #define MAXBOARDS_PARAM 4 10 static int io[MAXBOARDS_PARAM] = { 0, 0, 0, 0 }; 11 module_param_hw_array(io, int, ioport, NULL, 0); 12 MODULE_PARM_DESC(io, "base I/O address of controller (0x140, 0x150, 0x160, 0x170)"); 13 14 static int irq[MAXBOARDS_PARAM] = { 0, 0, 0, 0 }; 15 module_param_hw_array(irq, int, irq, NULL, 0); 16 MODULE_PARM_DESC(irq, "IRQ of controller (0=auto [default])"); 17 18 static int scsi_id[MAXBOARDS_PARAM] = { 0, 0, 0, 0 }; 19 module_param_hw_array(scsi_id, int, other, NULL, 0); 20 MODULE_PARM_DESC(scsi_id, "SCSI ID of controller (default = 7)"); 21 22 static unsigned long addresses[] = { 23 0xc8000, 24 0xca000, 25 0xce000, 26 0xde000, 27 }; 28 #define ADDRESS_COUNT ARRAY_SIZE(addresses) 29 30 static unsigned short ports[] = { 0x140, 0x150, 0x160, 0x170 }; 31 #define PORT_COUNT ARRAY_SIZE(ports) 32 33 static unsigned short irqs[] = { 3, 5, 10, 11, 12, 14, 15, 0 }; 34 35 /* This driver works *ONLY* for Future Domain cards using the TMC-1800, 36 * TMC-18C50, or TMC-18C30 chip. This includes models TMC-1650, 1660, 1670, 37 * and 1680. These are all 16-bit cards. 38 * BIOS versions prior to 3.2 assigned SCSI ID 6 to SCSI adapter. 39 * 40 * The following BIOS signature signatures are for boards which do *NOT* 41 * work with this driver (these TMC-8xx and TMC-9xx boards may work with the 42 * Seagate driver): 43 * 44 * FUTURE DOMAIN CORP. (C) 1986-1988 V4.0I 03/16/88 45 * FUTURE DOMAIN CORP. (C) 1986-1989 V5.0C2/14/89 46 * FUTURE DOMAIN CORP. (C) 1986-1989 V6.0A7/28/89 47 * FUTURE DOMAIN CORP. (C) 1986-1990 V6.0105/31/90 48 * FUTURE DOMAIN CORP. (C) 1986-1990 V6.0209/18/90 49 * FUTURE DOMAIN CORP. (C) 1986-1990 V7.009/18/90 50 * FUTURE DOMAIN CORP. (C) 1992 V8.00.004/02/92 51 * 52 * (The cards which do *NOT* work are all 8-bit cards -- although some of 53 * them have a 16-bit form-factor, the upper 8-bits are used only for IRQs 54 * and are *NOT* used for data. You can tell the difference by following 55 * the tracings on the circuit board -- if only the IRQ lines are involved, 56 * you have a "8-bit" card, and should *NOT* use this driver.) 57 */ 58 59 static struct signature { 60 const char *signature; 61 int offset; 62 int length; 63 int this_id; 64 int base_offset; 65 } signatures[] = { 66 /* 1 2 3 4 5 6 */ 67 /* 123456789012345678901234567890123456789012345678901234567890 */ 68 { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.07/28/89", 5, 50, 6, 0x1fcc }, 69 { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V1.07/28/89", 5, 50, 6, 0x1fcc }, 70 { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.07/28/89", 72, 50, 6, 0x1fa2 }, 71 { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.0", 73, 43, 6, 0x1fa2 }, 72 { "FUTURE DOMAIN CORP. (C) 1991 1800-V2.0.", 72, 39, 6, 0x1fa3 }, 73 { "FUTURE DOMAIN CORP. (C) 1992 V3.00.004/02/92", 5, 44, 6, 0 }, 74 { "FUTURE DOMAIN TMC-18XX (C) 1993 V3.203/12/93", 5, 44, 7, 0 }, 75 { "IBM F1 P2 BIOS v1.0011/09/92", 5, 28, 7, 0x1ff3 }, 76 { "IBM F1 P2 BIOS v1.0104/29/93", 5, 28, 7, 0 }, 77 { "Future Domain Corp. V1.0008/18/93", 5, 33, 7, 0 }, 78 { "Future Domain Corp. V2.0108/18/93", 5, 33, 7, 0 }, 79 { "FUTURE DOMAIN CORP. V3.5008/18/93", 5, 34, 7, 0 }, 80 { "FUTURE DOMAIN 18c30/18c50/1800 (C) 1994 V3.5", 5, 44, 7, 0 }, 81 { "FUTURE DOMAIN CORP. V3.6008/18/93", 5, 34, 7, 0 }, 82 { "FUTURE DOMAIN CORP. V3.6108/18/93", 5, 34, 7, 0 }, 83 }; 84 #define SIGNATURE_COUNT ARRAY_SIZE(signatures) 85 86 static int fdomain_isa_match(struct device *dev, unsigned int ndev) 87 { 88 struct Scsi_Host *sh; 89 int i, base = 0, irq = 0; 90 unsigned long bios_base = 0; 91 struct signature *sig = NULL; 92 void __iomem *p; 93 static struct signature *saved_sig; 94 int this_id = 7; 95 96 if (ndev < ADDRESS_COUNT) { /* scan supported ISA BIOS addresses */ 97 p = ioremap(addresses[ndev], FDOMAIN_BIOS_SIZE); 98 if (!p) 99 return 0; 100 for (i = 0; i < SIGNATURE_COUNT; i++) 101 if (check_signature(p + signatures[i].offset, 102 signatures[i].signature, 103 signatures[i].length)) 104 break; 105 if (i == SIGNATURE_COUNT) /* no signature found */ 106 goto fail_unmap; 107 sig = &signatures[i]; 108 bios_base = addresses[ndev]; 109 /* read I/O base from BIOS area */ 110 if (sig->base_offset) 111 base = readb(p + sig->base_offset) + 112 (readb(p + sig->base_offset + 1) << 8); 113 iounmap(p); 114 if (base) { 115 dev_info(dev, "BIOS at 0x%lx specifies I/O base 0x%x\n", 116 bios_base, base); 117 } else { /* no I/O base in BIOS area */ 118 dev_info(dev, "BIOS at 0x%lx\n", bios_base); 119 /* save BIOS signature for later use in port probing */ 120 saved_sig = sig; 121 return 0; 122 } 123 } else /* scan supported I/O ports */ 124 base = ports[ndev - ADDRESS_COUNT]; 125 126 /* use saved BIOS signature if present */ 127 if (!sig && saved_sig) 128 sig = saved_sig; 129 130 if (!request_region(base, FDOMAIN_REGION_SIZE, "fdomain_isa")) 131 return 0; 132 133 irq = irqs[(inb(base + REG_CFG1) & CFG1_IRQ_MASK) >> 1]; 134 135 if (sig) 136 this_id = sig->this_id; 137 138 sh = fdomain_create(base, irq, this_id, dev); 139 if (!sh) { 140 release_region(base, FDOMAIN_REGION_SIZE); 141 return 0; 142 } 143 144 dev_set_drvdata(dev, sh); 145 return 1; 146 fail_unmap: 147 iounmap(p); 148 return 0; 149 } 150 151 static int fdomain_isa_param_match(struct device *dev, unsigned int ndev) 152 { 153 struct Scsi_Host *sh; 154 int irq_ = irq[ndev]; 155 156 if (!io[ndev]) 157 return 0; 158 159 if (!request_region(io[ndev], FDOMAIN_REGION_SIZE, "fdomain_isa")) { 160 dev_err(dev, "base 0x%x already in use", io[ndev]); 161 return 0; 162 } 163 164 if (irq_ <= 0) 165 irq_ = irqs[(inb(io[ndev] + REG_CFG1) & CFG1_IRQ_MASK) >> 1]; 166 167 sh = fdomain_create(io[ndev], irq_, scsi_id[ndev], dev); 168 if (!sh) { 169 dev_err(dev, "controller not found at base 0x%x", io[ndev]); 170 release_region(io[ndev], FDOMAIN_REGION_SIZE); 171 return 0; 172 } 173 174 dev_set_drvdata(dev, sh); 175 return 1; 176 } 177 178 static int fdomain_isa_remove(struct device *dev, unsigned int ndev) 179 { 180 struct Scsi_Host *sh = dev_get_drvdata(dev); 181 int base = sh->io_port; 182 183 fdomain_destroy(sh); 184 release_region(base, FDOMAIN_REGION_SIZE); 185 dev_set_drvdata(dev, NULL); 186 return 0; 187 } 188 189 static struct isa_driver fdomain_isa_driver = { 190 .match = fdomain_isa_match, 191 .remove = fdomain_isa_remove, 192 .driver = { 193 .name = "fdomain_isa", 194 .pm = FDOMAIN_PM_OPS, 195 }, 196 }; 197 198 static int __init fdomain_isa_init(void) 199 { 200 int isa_probe_count = ADDRESS_COUNT + PORT_COUNT; 201 202 if (io[0]) { /* use module parameters if present */ 203 fdomain_isa_driver.match = fdomain_isa_param_match; 204 isa_probe_count = MAXBOARDS_PARAM; 205 } 206 207 return isa_register_driver(&fdomain_isa_driver, isa_probe_count); 208 } 209 210 static void __exit fdomain_isa_exit(void) 211 { 212 isa_unregister_driver(&fdomain_isa_driver); 213 } 214 215 module_init(fdomain_isa_init); 216 module_exit(fdomain_isa_exit); 217 218 MODULE_AUTHOR("Ondrej Zary, Rickard E. Faith"); 219 MODULE_DESCRIPTION("Future Domain TMC-16x0 ISA SCSI driver"); 220 MODULE_LICENSE("GPL"); 221