// SPDX-License-Identifier: GPL-2.0 #include <linux/module.h> #include <linux/io.h> #include <linux/isa.h> #include <scsi/scsi_host.h> #include "fdomain.h" #define MAXBOARDS_PARAM 4 static int io[MAXBOARDS_PARAM] = { 0, 0, 0, 0 }; module_param_hw_array(io, int, ioport, NULL, 0); MODULE_PARM_DESC(io, "base I/O address of controller (0x140, 0x150, 0x160, 0x170)"); static int irq[MAXBOARDS_PARAM] = { 0, 0, 0, 0 }; module_param_hw_array(irq, int, irq, NULL, 0); MODULE_PARM_DESC(irq, "IRQ of controller (0=auto [default])"); static int scsi_id[MAXBOARDS_PARAM] = { 0, 0, 0, 0 }; module_param_hw_array(scsi_id, int, other, NULL, 0); MODULE_PARM_DESC(scsi_id, "SCSI ID of controller (default = 7)"); static unsigned long addresses[] = { 0xc8000, 0xca000, 0xce000, 0xde000, }; #define ADDRESS_COUNT ARRAY_SIZE(addresses) static unsigned short ports[] = { 0x140, 0x150, 0x160, 0x170 }; #define PORT_COUNT ARRAY_SIZE(ports) static unsigned short irqs[] = { 3, 5, 10, 11, 12, 14, 15, 0 }; /* This driver works *ONLY* for Future Domain cards using the TMC-1800, * TMC-18C50, or TMC-18C30 chip. This includes models TMC-1650, 1660, 1670, * and 1680. These are all 16-bit cards. * BIOS versions prior to 3.2 assigned SCSI ID 6 to SCSI adapter. * * The following BIOS signature signatures are for boards which do *NOT* * work with this driver (these TMC-8xx and TMC-9xx boards may work with the * Seagate driver): * * FUTURE DOMAIN CORP. (C) 1986-1988 V4.0I 03/16/88 * FUTURE DOMAIN CORP. (C) 1986-1989 V5.0C2/14/89 * FUTURE DOMAIN CORP. (C) 1986-1989 V6.0A7/28/89 * FUTURE DOMAIN CORP. (C) 1986-1990 V6.0105/31/90 * FUTURE DOMAIN CORP. (C) 1986-1990 V6.0209/18/90 * FUTURE DOMAIN CORP. (C) 1986-1990 V7.009/18/90 * FUTURE DOMAIN CORP. (C) 1992 V8.00.004/02/92 * * (The cards which do *NOT* work are all 8-bit cards -- although some of * them have a 16-bit form-factor, the upper 8-bits are used only for IRQs * and are *NOT* used for data. You can tell the difference by following * the tracings on the circuit board -- if only the IRQ lines are involved, * you have a "8-bit" card, and should *NOT* use this driver.) */ static struct signature { const char *signature; int offset; int length; int this_id; int base_offset; } signatures[] = { /* 1 2 3 4 5 6 */ /* 123456789012345678901234567890123456789012345678901234567890 */ { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.07/28/89", 5, 50, 6, 0x1fcc }, { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V1.07/28/89", 5, 50, 6, 0x1fcc }, { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.07/28/89", 72, 50, 6, 0x1fa2 }, { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.0", 73, 43, 6, 0x1fa2 }, { "FUTURE DOMAIN CORP. (C) 1991 1800-V2.0.", 72, 39, 6, 0x1fa3 }, { "FUTURE DOMAIN CORP. (C) 1992 V3.00.004/02/92", 5, 44, 6, 0 }, { "FUTURE DOMAIN TMC-18XX (C) 1993 V3.203/12/93", 5, 44, 7, 0 }, { "IBM F1 P2 BIOS v1.0011/09/92", 5, 28, 7, 0x1ff3 }, { "IBM F1 P2 BIOS v1.0104/29/93", 5, 28, 7, 0 }, { "Future Domain Corp. V1.0008/18/93", 5, 33, 7, 0 }, { "Future Domain Corp. V2.0108/18/93", 5, 33, 7, 0 }, { "FUTURE DOMAIN CORP. V3.5008/18/93", 5, 34, 7, 0 }, { "FUTURE DOMAIN 18c30/18c50/1800 (C) 1994 V3.5", 5, 44, 7, 0 }, { "FUTURE DOMAIN CORP. V3.6008/18/93", 5, 34, 7, 0 }, { "FUTURE DOMAIN CORP. V3.6108/18/93", 5, 34, 7, 0 }, }; #define SIGNATURE_COUNT ARRAY_SIZE(signatures) static int fdomain_isa_match(struct device *dev, unsigned int ndev) { struct Scsi_Host *sh; int i, base = 0, irq = 0; unsigned long bios_base = 0; struct signature *sig = NULL; void __iomem *p; static struct signature *saved_sig; int this_id = 7; if (ndev < ADDRESS_COUNT) { /* scan supported ISA BIOS addresses */ p = ioremap(addresses[ndev], FDOMAIN_BIOS_SIZE); if (!p) return 0; for (i = 0; i < SIGNATURE_COUNT; i++) if (check_signature(p + signatures[i].offset, signatures[i].signature, signatures[i].length)) break; if (i == SIGNATURE_COUNT) /* no signature found */ goto fail_unmap; sig = &signatures[i]; bios_base = addresses[ndev]; /* read I/O base from BIOS area */ if (sig->base_offset) base = readb(p + sig->base_offset) + (readb(p + sig->base_offset + 1) << 8); iounmap(p); if (base) dev_info(dev, "BIOS at 0x%lx specifies I/O base 0x%x\n", bios_base, base); else dev_info(dev, "BIOS at 0x%lx\n", bios_base); if (!base) { /* no I/O base in BIOS area */ /* save BIOS signature for later use in port probing */ saved_sig = sig; return 0; } } else /* scan supported I/O ports */ base = ports[ndev - ADDRESS_COUNT]; /* use saved BIOS signature if present */ if (!sig && saved_sig) sig = saved_sig; if (!request_region(base, FDOMAIN_REGION_SIZE, "fdomain_isa")) return 0; irq = irqs[(inb(base + REG_CFG1) & 0x0e) >> 1]; if (sig) this_id = sig->this_id; sh = fdomain_create(base, irq, this_id, dev); if (!sh) { release_region(base, FDOMAIN_REGION_SIZE); return 0; } dev_set_drvdata(dev, sh); return 1; fail_unmap: iounmap(p); return 0; } static int fdomain_isa_param_match(struct device *dev, unsigned int ndev) { struct Scsi_Host *sh; int irq_ = irq[ndev]; if (!io[ndev]) return 0; if (!request_region(io[ndev], FDOMAIN_REGION_SIZE, "fdomain_isa")) { dev_err(dev, "base 0x%x already in use", io[ndev]); return 0; } if (irq_ <= 0) irq_ = irqs[(inb(io[ndev] + REG_CFG1) & 0x0e) >> 1]; sh = fdomain_create(io[ndev], irq_, scsi_id[ndev], dev); if (!sh) { dev_err(dev, "controller not found at base 0x%x", io[ndev]); release_region(io[ndev], FDOMAIN_REGION_SIZE); return 0; } dev_set_drvdata(dev, sh); return 1; } static int fdomain_isa_remove(struct device *dev, unsigned int ndev) { struct Scsi_Host *sh = dev_get_drvdata(dev); int base = sh->io_port; fdomain_destroy(sh); release_region(base, FDOMAIN_REGION_SIZE); dev_set_drvdata(dev, NULL); return 0; } static struct isa_driver fdomain_isa_driver = { .match = fdomain_isa_match, .remove = fdomain_isa_remove, .driver = { .name = "fdomain_isa", .pm = FDOMAIN_PM_OPS, }, }; static int __init fdomain_isa_init(void) { int isa_probe_count = ADDRESS_COUNT + PORT_COUNT; if (io[0]) { /* use module parameters if present */ fdomain_isa_driver.match = fdomain_isa_param_match; isa_probe_count = MAXBOARDS_PARAM; } return isa_register_driver(&fdomain_isa_driver, isa_probe_count); } static void __exit fdomain_isa_exit(void) { isa_unregister_driver(&fdomain_isa_driver); } module_init(fdomain_isa_init); module_exit(fdomain_isa_exit); MODULE_AUTHOR("Ondrej Zary, Rickard E. Faith"); MODULE_DESCRIPTION("Future Domain TMC-16x0 ISA SCSI driver"); MODULE_LICENSE("GPL");