Ondrej Zary | e5207cf | 2019-05-14 19:23:09 +0200 | [diff] [blame] | 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); |
Sergey Shtylyov | 255937d | 2020-08-29 23:19:42 +0300 | [diff] [blame] | 114 | if (base) { |
Ondrej Zary | e5207cf | 2019-05-14 19:23:09 +0200 | [diff] [blame] | 115 | dev_info(dev, "BIOS at 0x%lx specifies I/O base 0x%x\n", |
| 116 | bios_base, base); |
Sergey Shtylyov | 255937d | 2020-08-29 23:19:42 +0300 | [diff] [blame] | 117 | } else { /* no I/O base in BIOS area */ |
Ondrej Zary | e5207cf | 2019-05-14 19:23:09 +0200 | [diff] [blame] | 118 | dev_info(dev, "BIOS at 0x%lx\n", bios_base); |
Ondrej Zary | e5207cf | 2019-05-14 19:23:09 +0200 | [diff] [blame] | 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 | |
Sergei Shtylyov | 22d5aa3 | 2019-07-16 23:41:54 +0300 | [diff] [blame] | 133 | irq = irqs[(inb(base + REG_CFG1) & CFG1_IRQ_MASK) >> 1]; |
Ondrej Zary | e5207cf | 2019-05-14 19:23:09 +0200 | [diff] [blame] | 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) |
Sergei Shtylyov | 22d5aa3 | 2019-07-16 23:41:54 +0300 | [diff] [blame] | 165 | irq_ = irqs[(inb(io[ndev] + REG_CFG1) & CFG1_IRQ_MASK) >> 1]; |
Ondrej Zary | e5207cf | 2019-05-14 19:23:09 +0200 | [diff] [blame] | 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 | |
Uwe Kleine-König | 30e88d0 | 2021-01-22 10:24:49 +0100 | [diff] [blame] | 178 | static void fdomain_isa_remove(struct device *dev, unsigned int ndev) |
Ondrej Zary | e5207cf | 2019-05-14 19:23:09 +0200 | [diff] [blame] | 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); |
Ondrej Zary | e5207cf | 2019-05-14 19:23:09 +0200 | [diff] [blame] | 186 | } |
| 187 | |
| 188 | static 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 | |
| 197 | static 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 | |
| 209 | static void __exit fdomain_isa_exit(void) |
| 210 | { |
| 211 | isa_unregister_driver(&fdomain_isa_driver); |
| 212 | } |
| 213 | |
| 214 | module_init(fdomain_isa_init); |
| 215 | module_exit(fdomain_isa_exit); |
| 216 | |
| 217 | MODULE_AUTHOR("Ondrej Zary, Rickard E. Faith"); |
| 218 | MODULE_DESCRIPTION("Future Domain TMC-16x0 ISA SCSI driver"); |
| 219 | MODULE_LICENSE("GPL"); |