220 lines · c
1// SPDX-License-Identifier: GPL-2.02 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 410static int io[MAXBOARDS_PARAM] = { 0, 0, 0, 0 };11module_param_hw_array(io, int, ioport, NULL, 0);12MODULE_PARM_DESC(io, "base I/O address of controller (0x140, 0x150, 0x160, 0x170)");13 14static int irq[MAXBOARDS_PARAM] = { 0, 0, 0, 0 };15module_param_hw_array(irq, int, irq, NULL, 0);16MODULE_PARM_DESC(irq, "IRQ of controller (0=auto [default])");17 18static int scsi_id[MAXBOARDS_PARAM] = { 0, 0, 0, 0 };19module_param_hw_array(scsi_id, int, other, NULL, 0);20MODULE_PARM_DESC(scsi_id, "SCSI ID of controller (default = 7)");21 22static unsigned long addresses[] = {23 0xc8000,24 0xca000,25 0xce000,26 0xde000,27};28#define ADDRESS_COUNT ARRAY_SIZE(addresses)29 30static unsigned short ports[] = { 0x140, 0x150, 0x160, 0x170 };31#define PORT_COUNT ARRAY_SIZE(ports)32 33static 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 the42 * Seagate driver):43 *44 * FUTURE DOMAIN CORP. (C) 1986-1988 V4.0I 03/16/8845 * FUTURE DOMAIN CORP. (C) 1986-1989 V5.0C2/14/8946 * FUTURE DOMAIN CORP. (C) 1986-1989 V6.0A7/28/8947 * FUTURE DOMAIN CORP. (C) 1986-1990 V6.0105/31/9048 * FUTURE DOMAIN CORP. (C) 1986-1990 V6.0209/18/9049 * FUTURE DOMAIN CORP. (C) 1986-1990 V7.009/18/9050 * FUTURE DOMAIN CORP. (C) 1992 V8.00.004/02/9251 *52 * (The cards which do *NOT* work are all 8-bit cards -- although some of53 * them have a 16-bit form-factor, the upper 8-bits are used only for IRQs54 * and are *NOT* used for data. You can tell the difference by following55 * 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 59static 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 86static 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;146fail_unmap:147 iounmap(p);148 return 0;149}150 151static 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 178static void 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}187 188static struct isa_driver fdomain_isa_driver = {189 .match = fdomain_isa_match,190 .remove = fdomain_isa_remove,191 .driver = {192 .name = "fdomain_isa",193 .pm = FDOMAIN_PM_OPS,194 },195};196 197static int __init fdomain_isa_init(void)198{199 int isa_probe_count = ADDRESS_COUNT + PORT_COUNT;200 201 if (io[0]) { /* use module parameters if present */202 fdomain_isa_driver.match = fdomain_isa_param_match;203 isa_probe_count = MAXBOARDS_PARAM;204 }205 206 return isa_register_driver(&fdomain_isa_driver, isa_probe_count);207}208 209static void __exit fdomain_isa_exit(void)210{211 isa_unregister_driver(&fdomain_isa_driver);212}213 214module_init(fdomain_isa_init);215module_exit(fdomain_isa_exit);216 217MODULE_AUTHOR("Ondrej Zary, Rickard E. Faith");218MODULE_DESCRIPTION("Future Domain TMC-16x0 ISA SCSI driver");219MODULE_LICENSE("GPL");220