Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /*====================================================================== |
| 2 | |
| 3 | Device driver for Databook TCIC-2 PCMCIA controller |
| 4 | |
| 5 | tcic.c 1.111 2000/02/15 04:13:12 |
| 6 | |
| 7 | The contents of this file are subject to the Mozilla Public |
| 8 | License Version 1.1 (the "License"); you may not use this file |
| 9 | except in compliance with the License. You may obtain a copy of |
| 10 | the License at http://www.mozilla.org/MPL/ |
| 11 | |
| 12 | Software distributed under the License is distributed on an "AS |
| 13 | IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or |
| 14 | implied. See the License for the specific language governing |
| 15 | rights and limitations under the License. |
| 16 | |
| 17 | The initial developer of the original code is David A. Hinds |
| 18 | <dahinds@users.sourceforge.net>. Portions created by David A. Hinds |
| 19 | are Copyright (C) 1999 David A. Hinds. All Rights Reserved. |
| 20 | |
| 21 | Alternatively, the contents of this file may be used under the |
| 22 | terms of the GNU General Public License version 2 (the "GPL"), in which |
| 23 | case the provisions of the GPL are applicable instead of the |
| 24 | above. If you wish to allow the use of your version of this file |
| 25 | only under the terms of the GPL and not to allow others to use |
| 26 | your version of this file under the MPL, indicate your decision |
| 27 | by deleting the provisions above and replace them with the notice |
| 28 | and other provisions required by the GPL. If you do not delete |
| 29 | the provisions above, a recipient may use your version of this |
| 30 | file under either the MPL or the GPL. |
| 31 | |
| 32 | ======================================================================*/ |
| 33 | |
| 34 | #include <linux/module.h> |
| 35 | #include <linux/moduleparam.h> |
| 36 | #include <linux/init.h> |
| 37 | #include <linux/types.h> |
| 38 | #include <linux/fcntl.h> |
| 39 | #include <linux/string.h> |
| 40 | #include <linux/errno.h> |
| 41 | #include <linux/interrupt.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #include <linux/timer.h> |
| 43 | #include <linux/ioport.h> |
| 44 | #include <linux/delay.h> |
| 45 | #include <linux/workqueue.h> |
Russell King | d052d1b | 2005-10-29 19:07:23 +0100 | [diff] [blame] | 46 | #include <linux/platform_device.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | #include <linux/bitops.h> |
| 48 | |
| 49 | #include <asm/io.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | #include <pcmcia/ss.h> |
| 52 | #include "tcic.h" |
| 53 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>"); |
| 55 | MODULE_DESCRIPTION("Databook TCIC-2 PCMCIA socket driver"); |
| 56 | MODULE_LICENSE("Dual MPL/GPL"); |
| 57 | |
| 58 | /*====================================================================*/ |
| 59 | |
| 60 | /* Parameters that can be set with 'insmod' */ |
| 61 | |
| 62 | /* The base port address of the TCIC-2 chip */ |
| 63 | static unsigned long tcic_base = TCIC_BASE; |
| 64 | |
| 65 | /* Specify a socket number to ignore */ |
| 66 | static int ignore = -1; |
| 67 | |
| 68 | /* Probe for safe interrupts? */ |
| 69 | static int do_scan = 1; |
| 70 | |
| 71 | /* Bit map of interrupts to choose from */ |
| 72 | static u_int irq_mask = 0xffff; |
| 73 | static int irq_list[16]; |
Al Viro | 64a6f95 | 2007-10-14 19:35:30 +0100 | [diff] [blame] | 74 | static unsigned int irq_list_count; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | |
| 76 | /* The card status change interrupt -- 0 means autoselect */ |
| 77 | static int cs_irq; |
| 78 | |
| 79 | /* Poll status interval -- 0 means default to interrupt */ |
| 80 | static int poll_interval; |
| 81 | |
| 82 | /* Delay for card status double-checking */ |
| 83 | static int poll_quick = HZ/20; |
| 84 | |
| 85 | /* CCLK external clock time, in nanoseconds. 70 ns = 14.31818 MHz */ |
| 86 | static int cycle_time = 70; |
| 87 | |
David Howells | 9149ba1 | 2017-04-04 16:54:27 +0100 | [diff] [blame] | 88 | module_param_hw(tcic_base, ulong, ioport, 0444); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | module_param(ignore, int, 0444); |
| 90 | module_param(do_scan, int, 0444); |
David Howells | 9149ba1 | 2017-04-04 16:54:27 +0100 | [diff] [blame] | 91 | module_param_hw(irq_mask, int, other, 0444); |
| 92 | module_param_hw_array(irq_list, int, irq, &irq_list_count, 0444); |
| 93 | module_param_hw(cs_irq, int, irq, 0444); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | module_param(poll_interval, int, 0444); |
| 95 | module_param(poll_quick, int, 0444); |
| 96 | module_param(cycle_time, int, 0444); |
| 97 | |
| 98 | /*====================================================================*/ |
| 99 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 100 | static irqreturn_t tcic_interrupt(int irq, void *dev); |
Kees Cook | 41760d0 | 2017-10-21 12:09:17 -0700 | [diff] [blame] | 101 | static void tcic_timer(struct timer_list *unused); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | static struct pccard_operations tcic_operations; |
| 103 | |
| 104 | struct tcic_socket { |
| 105 | u_short psock; |
| 106 | u_char last_sstat; |
| 107 | u_char id; |
| 108 | struct pcmcia_socket socket; |
| 109 | }; |
| 110 | |
| 111 | static struct timer_list poll_timer; |
| 112 | static int tcic_timer_pending; |
| 113 | |
| 114 | static int sockets; |
| 115 | static struct tcic_socket socket_table[2]; |
| 116 | |
| 117 | /*====================================================================*/ |
| 118 | |
| 119 | /* Trick when selecting interrupts: the TCIC sktirq pin is supposed |
| 120 | to map to irq 11, but is coded as 0 or 1 in the irq registers. */ |
| 121 | #define TCIC_IRQ(x) ((x) ? (((x) == 11) ? 1 : (x)) : 15) |
| 122 | |
| 123 | #ifdef DEBUG_X |
| 124 | static u_char tcic_getb(u_char reg) |
| 125 | { |
| 126 | u_char val = inb(tcic_base+reg); |
| 127 | printk(KERN_DEBUG "tcic_getb(%#lx) = %#x\n", tcic_base+reg, val); |
| 128 | return val; |
| 129 | } |
| 130 | |
| 131 | static u_short tcic_getw(u_char reg) |
| 132 | { |
| 133 | u_short val = inw(tcic_base+reg); |
| 134 | printk(KERN_DEBUG "tcic_getw(%#lx) = %#x\n", tcic_base+reg, val); |
| 135 | return val; |
| 136 | } |
| 137 | |
| 138 | static void tcic_setb(u_char reg, u_char data) |
| 139 | { |
| 140 | printk(KERN_DEBUG "tcic_setb(%#lx, %#x)\n", tcic_base+reg, data); |
| 141 | outb(data, tcic_base+reg); |
| 142 | } |
| 143 | |
| 144 | static void tcic_setw(u_char reg, u_short data) |
| 145 | { |
| 146 | printk(KERN_DEBUG "tcic_setw(%#lx, %#x)\n", tcic_base+reg, data); |
| 147 | outw(data, tcic_base+reg); |
| 148 | } |
| 149 | #else |
| 150 | #define tcic_getb(reg) inb(tcic_base+reg) |
| 151 | #define tcic_getw(reg) inw(tcic_base+reg) |
| 152 | #define tcic_setb(reg, data) outb(data, tcic_base+reg) |
| 153 | #define tcic_setw(reg, data) outw(data, tcic_base+reg) |
| 154 | #endif |
| 155 | |
| 156 | static void tcic_setl(u_char reg, u_int data) |
| 157 | { |
| 158 | #ifdef DEBUG_X |
| 159 | printk(KERN_DEBUG "tcic_setl(%#x, %#lx)\n", tcic_base+reg, data); |
| 160 | #endif |
| 161 | outw(data & 0xffff, tcic_base+reg); |
| 162 | outw(data >> 16, tcic_base+reg+2); |
| 163 | } |
| 164 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | static void tcic_aux_setb(u_short reg, u_char data) |
| 166 | { |
| 167 | u_char mode = (tcic_getb(TCIC_MODE) & TCIC_MODE_PGMMASK) | reg; |
| 168 | tcic_setb(TCIC_MODE, mode); |
| 169 | tcic_setb(TCIC_AUX, data); |
| 170 | } |
| 171 | |
| 172 | static u_short tcic_aux_getw(u_short reg) |
| 173 | { |
| 174 | u_char mode = (tcic_getb(TCIC_MODE) & TCIC_MODE_PGMMASK) | reg; |
| 175 | tcic_setb(TCIC_MODE, mode); |
| 176 | return tcic_getw(TCIC_AUX); |
| 177 | } |
| 178 | |
| 179 | static void tcic_aux_setw(u_short reg, u_short data) |
| 180 | { |
| 181 | u_char mode = (tcic_getb(TCIC_MODE) & TCIC_MODE_PGMMASK) | reg; |
| 182 | tcic_setb(TCIC_MODE, mode); |
| 183 | tcic_setw(TCIC_AUX, data); |
| 184 | } |
| 185 | |
| 186 | /*====================================================================*/ |
| 187 | |
| 188 | /* Time conversion functions */ |
| 189 | |
| 190 | static int to_cycles(int ns) |
| 191 | { |
| 192 | if (ns < 14) |
| 193 | return 0; |
| 194 | else |
| 195 | return 2*(ns-14)/cycle_time; |
| 196 | } |
| 197 | |
| 198 | /*====================================================================*/ |
| 199 | |
| 200 | static volatile u_int irq_hits; |
| 201 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 202 | static irqreturn_t __init tcic_irq_count(int irq, void *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | { |
| 204 | irq_hits++; |
| 205 | return IRQ_HANDLED; |
| 206 | } |
| 207 | |
| 208 | static u_int __init try_irq(int irq) |
| 209 | { |
| 210 | u_short cfg; |
| 211 | |
| 212 | irq_hits = 0; |
| 213 | if (request_irq(irq, tcic_irq_count, 0, "irq scan", tcic_irq_count) != 0) |
| 214 | return -1; |
| 215 | mdelay(10); |
| 216 | if (irq_hits) { |
| 217 | free_irq(irq, tcic_irq_count); |
| 218 | return -1; |
| 219 | } |
| 220 | |
| 221 | /* Generate one interrupt */ |
| 222 | cfg = TCIC_SYSCFG_AUTOBUSY | 0x0a00; |
| 223 | tcic_aux_setw(TCIC_AUX_SYSCFG, cfg | TCIC_IRQ(irq)); |
| 224 | tcic_setb(TCIC_IENA, TCIC_IENA_ERR | TCIC_IENA_CFG_HIGH); |
| 225 | tcic_setb(TCIC_ICSR, TCIC_ICSR_ERR | TCIC_ICSR_JAM); |
| 226 | |
| 227 | udelay(1000); |
| 228 | free_irq(irq, tcic_irq_count); |
| 229 | |
| 230 | /* Turn off interrupts */ |
| 231 | tcic_setb(TCIC_IENA, TCIC_IENA_CFG_OFF); |
| 232 | while (tcic_getb(TCIC_ICSR)) |
| 233 | tcic_setb(TCIC_ICSR, TCIC_ICSR_JAM); |
| 234 | tcic_aux_setw(TCIC_AUX_SYSCFG, cfg); |
| 235 | |
| 236 | return (irq_hits != 1); |
| 237 | } |
| 238 | |
| 239 | static u_int __init irq_scan(u_int mask0) |
| 240 | { |
| 241 | u_int mask1; |
| 242 | int i; |
| 243 | |
| 244 | #ifdef __alpha__ |
| 245 | #define PIC 0x4d0 |
| 246 | /* Don't probe level-triggered interrupts -- reserved for PCI */ |
| 247 | int level_mask = inb_p(PIC) | (inb_p(PIC+1) << 8); |
| 248 | if (level_mask) |
| 249 | mask0 &= ~level_mask; |
| 250 | #endif |
| 251 | |
| 252 | mask1 = 0; |
| 253 | if (do_scan) { |
| 254 | for (i = 0; i < 16; i++) |
| 255 | if ((mask0 & (1 << i)) && (try_irq(i) == 0)) |
| 256 | mask1 |= (1 << i); |
| 257 | for (i = 0; i < 16; i++) |
| 258 | if ((mask1 & (1 << i)) && (try_irq(i) != 0)) { |
| 259 | mask1 ^= (1 << i); |
| 260 | } |
| 261 | } |
| 262 | |
| 263 | if (mask1) { |
| 264 | printk("scanned"); |
| 265 | } else { |
| 266 | /* Fallback: just find interrupts that aren't in use */ |
| 267 | for (i = 0; i < 16; i++) |
| 268 | if ((mask0 & (1 << i)) && |
| 269 | (request_irq(i, tcic_irq_count, 0, "x", tcic_irq_count) == 0)) { |
| 270 | mask1 |= (1 << i); |
| 271 | free_irq(i, tcic_irq_count); |
| 272 | } |
| 273 | printk("default"); |
| 274 | } |
| 275 | |
| 276 | printk(") = "); |
| 277 | for (i = 0; i < 16; i++) |
| 278 | if (mask1 & (1<<i)) |
| 279 | printk("%s%d", ((mask1 & ((1<<i)-1)) ? "," : ""), i); |
| 280 | printk(" "); |
| 281 | |
| 282 | return mask1; |
| 283 | } |
| 284 | |
| 285 | /*====================================================================== |
| 286 | |
| 287 | See if a card is present, powered up, in IO mode, and already |
| 288 | bound to a (non-PCMCIA) Linux driver. |
| 289 | |
| 290 | We make an exception for cards that look like serial devices. |
| 291 | |
| 292 | ======================================================================*/ |
| 293 | |
| 294 | static int __init is_active(int s) |
| 295 | { |
| 296 | u_short scf1, ioctl, base, num; |
| 297 | u_char pwr, sstat; |
| 298 | u_int addr; |
| 299 | |
| 300 | tcic_setl(TCIC_ADDR, (s << TCIC_ADDR_SS_SHFT) |
| 301 | | TCIC_ADDR_INDREG | TCIC_SCF1(s)); |
| 302 | scf1 = tcic_getw(TCIC_DATA); |
| 303 | pwr = tcic_getb(TCIC_PWR); |
| 304 | sstat = tcic_getb(TCIC_SSTAT); |
| 305 | addr = TCIC_IWIN(s, 0); |
| 306 | tcic_setw(TCIC_ADDR, addr + TCIC_IBASE_X); |
| 307 | base = tcic_getw(TCIC_DATA); |
| 308 | tcic_setw(TCIC_ADDR, addr + TCIC_ICTL_X); |
| 309 | ioctl = tcic_getw(TCIC_DATA); |
| 310 | |
| 311 | if (ioctl & TCIC_ICTL_TINY) |
| 312 | num = 1; |
| 313 | else { |
| 314 | num = (base ^ (base-1)); |
| 315 | base = base & (base-1); |
| 316 | } |
| 317 | |
| 318 | if ((sstat & TCIC_SSTAT_CD) && (pwr & TCIC_PWR_VCC(s)) && |
| 319 | (scf1 & TCIC_SCF1_IOSTS) && (ioctl & TCIC_ICTL_ENA) && |
| 320 | ((base & 0xfeef) != 0x02e8)) { |
| 321 | struct resource *res = request_region(base, num, "tcic-2"); |
| 322 | if (!res) /* region is busy */ |
| 323 | return 1; |
| 324 | release_region(base, num); |
| 325 | } |
| 326 | |
| 327 | return 0; |
| 328 | } |
| 329 | |
| 330 | /*====================================================================== |
| 331 | |
| 332 | This returns the revision code for the specified socket. |
| 333 | |
| 334 | ======================================================================*/ |
| 335 | |
| 336 | static int __init get_tcic_id(void) |
| 337 | { |
| 338 | u_short id; |
| 339 | |
| 340 | tcic_aux_setw(TCIC_AUX_TEST, TCIC_TEST_DIAG); |
| 341 | id = tcic_aux_getw(TCIC_AUX_ILOCK); |
| 342 | id = (id & TCIC_ILOCKTEST_ID_MASK) >> TCIC_ILOCKTEST_ID_SH; |
| 343 | tcic_aux_setw(TCIC_AUX_TEST, 0); |
| 344 | return id; |
| 345 | } |
| 346 | |
| 347 | /*====================================================================*/ |
| 348 | |
Ming Lei | 7a192ec | 2009-02-06 23:40:12 +0800 | [diff] [blame] | 349 | static struct platform_driver tcic_driver = { |
| 350 | .driver = { |
| 351 | .name = "tcic-pcmcia", |
Ming Lei | 7a192ec | 2009-02-06 23:40:12 +0800 | [diff] [blame] | 352 | }, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | }; |
| 354 | |
| 355 | static struct platform_device tcic_device = { |
| 356 | .name = "tcic-pcmcia", |
| 357 | .id = 0, |
| 358 | }; |
| 359 | |
| 360 | |
| 361 | static int __init init_tcic(void) |
| 362 | { |
| 363 | int i, sock, ret = 0; |
| 364 | u_int mask, scan; |
| 365 | |
Ming Lei | 7a192ec | 2009-02-06 23:40:12 +0800 | [diff] [blame] | 366 | if (platform_driver_register(&tcic_driver)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | return -1; |
| 368 | |
| 369 | printk(KERN_INFO "Databook TCIC-2 PCMCIA probe: "); |
| 370 | sock = 0; |
| 371 | |
| 372 | if (!request_region(tcic_base, 16, "tcic-2")) { |
| 373 | printk("could not allocate ports,\n "); |
Ming Lei | 7a192ec | 2009-02-06 23:40:12 +0800 | [diff] [blame] | 374 | platform_driver_unregister(&tcic_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | return -ENODEV; |
| 376 | } |
| 377 | else { |
| 378 | tcic_setw(TCIC_ADDR, 0); |
| 379 | if (tcic_getw(TCIC_ADDR) == 0) { |
| 380 | tcic_setw(TCIC_ADDR, 0xc3a5); |
| 381 | if (tcic_getw(TCIC_ADDR) == 0xc3a5) sock = 2; |
| 382 | } |
| 383 | if (sock == 0) { |
| 384 | /* See if resetting the controller does any good */ |
| 385 | tcic_setb(TCIC_SCTRL, TCIC_SCTRL_RESET); |
| 386 | tcic_setb(TCIC_SCTRL, 0); |
| 387 | tcic_setw(TCIC_ADDR, 0); |
| 388 | if (tcic_getw(TCIC_ADDR) == 0) { |
| 389 | tcic_setw(TCIC_ADDR, 0xc3a5); |
| 390 | if (tcic_getw(TCIC_ADDR) == 0xc3a5) sock = 2; |
| 391 | } |
| 392 | } |
| 393 | } |
| 394 | if (sock == 0) { |
| 395 | printk("not found.\n"); |
| 396 | release_region(tcic_base, 16); |
Ming Lei | 7a192ec | 2009-02-06 23:40:12 +0800 | [diff] [blame] | 397 | platform_driver_unregister(&tcic_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | return -ENODEV; |
| 399 | } |
| 400 | |
| 401 | sockets = 0; |
| 402 | for (i = 0; i < sock; i++) { |
| 403 | if ((i == ignore) || is_active(i)) continue; |
| 404 | socket_table[sockets].psock = i; |
| 405 | socket_table[sockets].id = get_tcic_id(); |
| 406 | |
| 407 | socket_table[sockets].socket.owner = THIS_MODULE; |
| 408 | /* only 16-bit cards, memory windows must be size-aligned */ |
| 409 | /* No PCI or CardBus support */ |
| 410 | socket_table[sockets].socket.features = SS_CAP_PCCARD | SS_CAP_MEM_ALIGN; |
| 411 | /* irq 14, 11, 10, 7, 6, 5, 4, 3 */ |
| 412 | socket_table[sockets].socket.irq_mask = 0x4cf8; |
| 413 | /* 4K minimum window size */ |
| 414 | socket_table[sockets].socket.map_size = 0x1000; |
| 415 | sockets++; |
| 416 | } |
| 417 | |
| 418 | switch (socket_table[0].id) { |
| 419 | case TCIC_ID_DB86082: |
| 420 | printk("DB86082"); break; |
| 421 | case TCIC_ID_DB86082A: |
| 422 | printk("DB86082A"); break; |
| 423 | case TCIC_ID_DB86084: |
| 424 | printk("DB86084"); break; |
| 425 | case TCIC_ID_DB86084A: |
| 426 | printk("DB86084A"); break; |
| 427 | case TCIC_ID_DB86072: |
| 428 | printk("DB86072"); break; |
| 429 | case TCIC_ID_DB86184: |
| 430 | printk("DB86184"); break; |
| 431 | case TCIC_ID_DB86082B: |
| 432 | printk("DB86082B"); break; |
| 433 | default: |
| 434 | printk("Unknown ID 0x%02x", socket_table[0].id); |
| 435 | } |
| 436 | |
| 437 | /* Set up polling */ |
Kees Cook | 41760d0 | 2017-10-21 12:09:17 -0700 | [diff] [blame] | 438 | timer_setup(&poll_timer, &tcic_timer, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | |
| 440 | /* Build interrupt mask */ |
Joe Perches | ad361c9 | 2009-07-06 13:05:40 -0700 | [diff] [blame] | 441 | printk(KERN_CONT ", %d sockets\n", sockets); |
| 442 | printk(KERN_INFO " irq list ("); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | if (irq_list_count == 0) |
| 444 | mask = irq_mask; |
| 445 | else |
| 446 | for (i = mask = 0; i < irq_list_count; i++) |
| 447 | mask |= (1<<irq_list[i]); |
| 448 | |
| 449 | /* irq 14, 11, 10, 7, 6, 5, 4, 3 */ |
| 450 | mask &= 0x4cf8; |
| 451 | /* Scan interrupts */ |
| 452 | mask = irq_scan(mask); |
| 453 | for (i=0;i<sockets;i++) |
| 454 | socket_table[i].socket.irq_mask = mask; |
| 455 | |
| 456 | /* Check for only two interrupts available */ |
| 457 | scan = (mask & (mask-1)); |
| 458 | if (((scan & (scan-1)) == 0) && (poll_interval == 0)) |
| 459 | poll_interval = HZ; |
| 460 | |
| 461 | if (poll_interval == 0) { |
| 462 | /* Avoid irq 12 unless it is explicitly requested */ |
| 463 | u_int cs_mask = mask & ((cs_irq) ? (1<<cs_irq) : ~(1<<12)); |
| 464 | for (i = 15; i > 0; i--) |
| 465 | if ((cs_mask & (1 << i)) && |
| 466 | (request_irq(i, tcic_interrupt, 0, "tcic", |
| 467 | tcic_interrupt) == 0)) |
| 468 | break; |
| 469 | cs_irq = i; |
| 470 | if (cs_irq == 0) poll_interval = HZ; |
| 471 | } |
| 472 | |
| 473 | if (socket_table[0].socket.irq_mask & (1 << 11)) |
| 474 | printk("sktirq is irq 11, "); |
| 475 | if (cs_irq != 0) |
| 476 | printk("status change on irq %d\n", cs_irq); |
| 477 | else |
| 478 | printk("polled status, interval = %d ms\n", |
| 479 | poll_interval * 1000 / HZ); |
| 480 | |
| 481 | for (i = 0; i < sockets; i++) { |
| 482 | tcic_setw(TCIC_ADDR+2, socket_table[i].psock << TCIC_SS_SHFT); |
| 483 | socket_table[i].last_sstat = tcic_getb(TCIC_SSTAT); |
| 484 | } |
| 485 | |
| 486 | /* jump start interrupt handler, if needed */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 487 | tcic_interrupt(0, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 488 | |
| 489 | platform_device_register(&tcic_device); |
| 490 | |
| 491 | for (i = 0; i < sockets; i++) { |
| 492 | socket_table[i].socket.ops = &tcic_operations; |
| 493 | socket_table[i].socket.resource_ops = &pccard_nonstatic_ops; |
Greg Kroah-Hartman | 8737331 | 2006-09-12 17:00:10 +0200 | [diff] [blame] | 494 | socket_table[i].socket.dev.parent = &tcic_device.dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | ret = pcmcia_register_socket(&socket_table[i].socket); |
| 496 | if (ret && i) |
| 497 | pcmcia_unregister_socket(&socket_table[0].socket); |
| 498 | } |
| 499 | |
| 500 | return ret; |
| 501 | |
| 502 | return 0; |
| 503 | |
| 504 | } /* init_tcic */ |
| 505 | |
| 506 | /*====================================================================*/ |
| 507 | |
| 508 | static void __exit exit_tcic(void) |
| 509 | { |
| 510 | int i; |
| 511 | |
| 512 | del_timer_sync(&poll_timer); |
| 513 | if (cs_irq != 0) { |
| 514 | tcic_aux_setw(TCIC_AUX_SYSCFG, TCIC_SYSCFG_AUTOBUSY|0x0a00); |
| 515 | free_irq(cs_irq, tcic_interrupt); |
| 516 | } |
| 517 | release_region(tcic_base, 16); |
| 518 | |
| 519 | for (i = 0; i < sockets; i++) { |
| 520 | pcmcia_unregister_socket(&socket_table[i].socket); |
| 521 | } |
| 522 | |
| 523 | platform_device_unregister(&tcic_device); |
Ming Lei | 7a192ec | 2009-02-06 23:40:12 +0800 | [diff] [blame] | 524 | platform_driver_unregister(&tcic_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 525 | } /* exit_tcic */ |
| 526 | |
| 527 | /*====================================================================*/ |
| 528 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 529 | static irqreturn_t tcic_interrupt(int irq, void *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | { |
| 531 | int i, quick = 0; |
| 532 | u_char latch, sstat; |
| 533 | u_short psock; |
| 534 | u_int events; |
| 535 | static volatile int active = 0; |
| 536 | |
| 537 | if (active) { |
| 538 | printk(KERN_NOTICE "tcic: reentered interrupt handler!\n"); |
| 539 | return IRQ_NONE; |
| 540 | } else |
| 541 | active = 1; |
| 542 | |
Dominik Brodowski | c9f50dd | 2009-10-23 12:56:46 +0200 | [diff] [blame] | 543 | pr_debug("tcic_interrupt()\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | |
| 545 | for (i = 0; i < sockets; i++) { |
| 546 | psock = socket_table[i].psock; |
| 547 | tcic_setl(TCIC_ADDR, (psock << TCIC_ADDR_SS_SHFT) |
| 548 | | TCIC_ADDR_INDREG | TCIC_SCF1(psock)); |
| 549 | sstat = tcic_getb(TCIC_SSTAT); |
| 550 | latch = sstat ^ socket_table[psock].last_sstat; |
| 551 | socket_table[i].last_sstat = sstat; |
| 552 | if (tcic_getb(TCIC_ICSR) & TCIC_ICSR_CDCHG) { |
| 553 | tcic_setb(TCIC_ICSR, TCIC_ICSR_CLEAR); |
| 554 | quick = 1; |
| 555 | } |
| 556 | if (latch == 0) |
| 557 | continue; |
| 558 | events = (latch & TCIC_SSTAT_CD) ? SS_DETECT : 0; |
| 559 | events |= (latch & TCIC_SSTAT_WP) ? SS_WRPROT : 0; |
| 560 | if (tcic_getw(TCIC_DATA) & TCIC_SCF1_IOSTS) { |
| 561 | events |= (latch & TCIC_SSTAT_LBAT1) ? SS_STSCHG : 0; |
| 562 | } else { |
| 563 | events |= (latch & TCIC_SSTAT_RDY) ? SS_READY : 0; |
| 564 | events |= (latch & TCIC_SSTAT_LBAT1) ? SS_BATDEAD : 0; |
| 565 | events |= (latch & TCIC_SSTAT_LBAT2) ? SS_BATWARN : 0; |
| 566 | } |
| 567 | if (events) { |
| 568 | pcmcia_parse_events(&socket_table[i].socket, events); |
| 569 | } |
| 570 | } |
| 571 | |
| 572 | /* Schedule next poll, if needed */ |
| 573 | if (((cs_irq == 0) || quick) && (!tcic_timer_pending)) { |
| 574 | poll_timer.expires = jiffies + (quick ? poll_quick : poll_interval); |
| 575 | add_timer(&poll_timer); |
| 576 | tcic_timer_pending = 1; |
| 577 | } |
| 578 | active = 0; |
| 579 | |
Dominik Brodowski | c9f50dd | 2009-10-23 12:56:46 +0200 | [diff] [blame] | 580 | pr_debug("interrupt done\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | return IRQ_HANDLED; |
| 582 | } /* tcic_interrupt */ |
| 583 | |
Kees Cook | 41760d0 | 2017-10-21 12:09:17 -0700 | [diff] [blame] | 584 | static void tcic_timer(struct timer_list *unused) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | { |
Dominik Brodowski | c9f50dd | 2009-10-23 12:56:46 +0200 | [diff] [blame] | 586 | pr_debug("tcic_timer()\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | tcic_timer_pending = 0; |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 588 | tcic_interrupt(0, NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | } /* tcic_timer */ |
| 590 | |
| 591 | /*====================================================================*/ |
| 592 | |
| 593 | static int tcic_get_status(struct pcmcia_socket *sock, u_int *value) |
| 594 | { |
| 595 | u_short psock = container_of(sock, struct tcic_socket, socket)->psock; |
| 596 | u_char reg; |
| 597 | |
| 598 | tcic_setl(TCIC_ADDR, (psock << TCIC_ADDR_SS_SHFT) |
| 599 | | TCIC_ADDR_INDREG | TCIC_SCF1(psock)); |
| 600 | reg = tcic_getb(TCIC_SSTAT); |
| 601 | *value = (reg & TCIC_SSTAT_CD) ? SS_DETECT : 0; |
| 602 | *value |= (reg & TCIC_SSTAT_WP) ? SS_WRPROT : 0; |
| 603 | if (tcic_getw(TCIC_DATA) & TCIC_SCF1_IOSTS) { |
| 604 | *value |= (reg & TCIC_SSTAT_LBAT1) ? SS_STSCHG : 0; |
| 605 | } else { |
| 606 | *value |= (reg & TCIC_SSTAT_RDY) ? SS_READY : 0; |
| 607 | *value |= (reg & TCIC_SSTAT_LBAT1) ? SS_BATDEAD : 0; |
| 608 | *value |= (reg & TCIC_SSTAT_LBAT2) ? SS_BATWARN : 0; |
| 609 | } |
| 610 | reg = tcic_getb(TCIC_PWR); |
| 611 | if (reg & (TCIC_PWR_VCC(psock)|TCIC_PWR_VPP(psock))) |
| 612 | *value |= SS_POWERON; |
Dominik Brodowski | c9f50dd | 2009-10-23 12:56:46 +0200 | [diff] [blame] | 613 | dev_dbg(&sock->dev, "GetStatus(%d) = %#2.2x\n", psock, *value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | return 0; |
| 615 | } /* tcic_get_status */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | |
| 617 | /*====================================================================*/ |
| 618 | |
| 619 | static int tcic_set_socket(struct pcmcia_socket *sock, socket_state_t *state) |
| 620 | { |
| 621 | u_short psock = container_of(sock, struct tcic_socket, socket)->psock; |
| 622 | u_char reg; |
| 623 | u_short scf1, scf2; |
| 624 | |
Dominik Brodowski | c9f50dd | 2009-10-23 12:56:46 +0200 | [diff] [blame] | 625 | dev_dbg(&sock->dev, "SetSocket(%d, flags %#3.3x, Vcc %d, Vpp %d, " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 626 | "io_irq %d, csc_mask %#2.2x)\n", psock, state->flags, |
| 627 | state->Vcc, state->Vpp, state->io_irq, state->csc_mask); |
| 628 | tcic_setw(TCIC_ADDR+2, (psock << TCIC_SS_SHFT) | TCIC_ADR2_INDREG); |
| 629 | |
| 630 | reg = tcic_getb(TCIC_PWR); |
| 631 | reg &= ~(TCIC_PWR_VCC(psock) | TCIC_PWR_VPP(psock)); |
| 632 | |
| 633 | if (state->Vcc == 50) { |
| 634 | switch (state->Vpp) { |
| 635 | case 0: reg |= TCIC_PWR_VCC(psock) | TCIC_PWR_VPP(psock); break; |
| 636 | case 50: reg |= TCIC_PWR_VCC(psock); break; |
| 637 | case 120: reg |= TCIC_PWR_VPP(psock); break; |
| 638 | default: return -EINVAL; |
| 639 | } |
| 640 | } else if (state->Vcc != 0) |
| 641 | return -EINVAL; |
| 642 | |
| 643 | if (reg != tcic_getb(TCIC_PWR)) |
| 644 | tcic_setb(TCIC_PWR, reg); |
| 645 | |
| 646 | reg = TCIC_ILOCK_HOLD_CCLK | TCIC_ILOCK_CWAIT; |
| 647 | if (state->flags & SS_OUTPUT_ENA) { |
| 648 | tcic_setb(TCIC_SCTRL, TCIC_SCTRL_ENA); |
| 649 | reg |= TCIC_ILOCK_CRESENA; |
| 650 | } else |
| 651 | tcic_setb(TCIC_SCTRL, 0); |
| 652 | if (state->flags & SS_RESET) |
| 653 | reg |= TCIC_ILOCK_CRESET; |
| 654 | tcic_aux_setb(TCIC_AUX_ILOCK, reg); |
| 655 | |
| 656 | tcic_setw(TCIC_ADDR, TCIC_SCF1(psock)); |
| 657 | scf1 = TCIC_SCF1_FINPACK; |
| 658 | scf1 |= TCIC_IRQ(state->io_irq); |
| 659 | if (state->flags & SS_IOCARD) { |
| 660 | scf1 |= TCIC_SCF1_IOSTS; |
| 661 | if (state->flags & SS_SPKR_ENA) |
| 662 | scf1 |= TCIC_SCF1_SPKR; |
| 663 | if (state->flags & SS_DMA_MODE) |
| 664 | scf1 |= TCIC_SCF1_DREQ2 << TCIC_SCF1_DMA_SHIFT; |
| 665 | } |
| 666 | tcic_setw(TCIC_DATA, scf1); |
| 667 | |
| 668 | /* Some general setup stuff, and configure status interrupt */ |
| 669 | reg = TCIC_WAIT_ASYNC | TCIC_WAIT_SENSE | to_cycles(250); |
| 670 | tcic_aux_setb(TCIC_AUX_WCTL, reg); |
| 671 | tcic_aux_setw(TCIC_AUX_SYSCFG, TCIC_SYSCFG_AUTOBUSY|0x0a00| |
| 672 | TCIC_IRQ(cs_irq)); |
| 673 | |
| 674 | /* Card status change interrupt mask */ |
| 675 | tcic_setw(TCIC_ADDR, TCIC_SCF2(psock)); |
| 676 | scf2 = TCIC_SCF2_MALL; |
| 677 | if (state->csc_mask & SS_DETECT) scf2 &= ~TCIC_SCF2_MCD; |
| 678 | if (state->flags & SS_IOCARD) { |
| 679 | if (state->csc_mask & SS_STSCHG) reg &= ~TCIC_SCF2_MLBAT1; |
| 680 | } else { |
| 681 | if (state->csc_mask & SS_BATDEAD) reg &= ~TCIC_SCF2_MLBAT1; |
| 682 | if (state->csc_mask & SS_BATWARN) reg &= ~TCIC_SCF2_MLBAT2; |
| 683 | if (state->csc_mask & SS_READY) reg &= ~TCIC_SCF2_MRDY; |
| 684 | } |
| 685 | tcic_setw(TCIC_DATA, scf2); |
| 686 | /* For the ISA bus, the irq should be active-high totem-pole */ |
| 687 | tcic_setb(TCIC_IENA, TCIC_IENA_CDCHG | TCIC_IENA_CFG_HIGH); |
| 688 | |
| 689 | return 0; |
| 690 | } /* tcic_set_socket */ |
| 691 | |
| 692 | /*====================================================================*/ |
| 693 | |
| 694 | static int tcic_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io) |
| 695 | { |
| 696 | u_short psock = container_of(sock, struct tcic_socket, socket)->psock; |
| 697 | u_int addr; |
| 698 | u_short base, len, ioctl; |
| 699 | |
Dominik Brodowski | c9f50dd | 2009-10-23 12:56:46 +0200 | [diff] [blame] | 700 | dev_dbg(&sock->dev, "SetIOMap(%d, %d, %#2.2x, %d ns, " |
Randy Dunlap | 0137304 | 2009-10-11 18:50:09 -0700 | [diff] [blame] | 701 | "%#llx-%#llx)\n", psock, io->map, io->flags, io->speed, |
| 702 | (unsigned long long)io->start, (unsigned long long)io->stop); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 703 | if ((io->map > 1) || (io->start > 0xffff) || (io->stop > 0xffff) || |
| 704 | (io->stop < io->start)) return -EINVAL; |
| 705 | tcic_setw(TCIC_ADDR+2, TCIC_ADR2_INDREG | (psock << TCIC_SS_SHFT)); |
| 706 | addr = TCIC_IWIN(psock, io->map); |
| 707 | |
| 708 | base = io->start; len = io->stop - io->start; |
| 709 | /* Check to see that len+1 is power of two, etc */ |
| 710 | if ((len & (len+1)) || (base & len)) return -EINVAL; |
| 711 | base |= (len+1)>>1; |
| 712 | tcic_setw(TCIC_ADDR, addr + TCIC_IBASE_X); |
| 713 | tcic_setw(TCIC_DATA, base); |
| 714 | |
| 715 | ioctl = (psock << TCIC_ICTL_SS_SHFT); |
| 716 | ioctl |= (len == 0) ? TCIC_ICTL_TINY : 0; |
| 717 | ioctl |= (io->flags & MAP_ACTIVE) ? TCIC_ICTL_ENA : 0; |
| 718 | ioctl |= to_cycles(io->speed) & TCIC_ICTL_WSCNT_MASK; |
| 719 | if (!(io->flags & MAP_AUTOSZ)) { |
| 720 | ioctl |= TCIC_ICTL_QUIET; |
| 721 | ioctl |= (io->flags & MAP_16BIT) ? TCIC_ICTL_BW_16 : TCIC_ICTL_BW_8; |
| 722 | } |
| 723 | tcic_setw(TCIC_ADDR, addr + TCIC_ICTL_X); |
| 724 | tcic_setw(TCIC_DATA, ioctl); |
| 725 | |
| 726 | return 0; |
| 727 | } /* tcic_set_io_map */ |
| 728 | |
| 729 | /*====================================================================*/ |
| 730 | |
| 731 | static int tcic_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem) |
| 732 | { |
| 733 | u_short psock = container_of(sock, struct tcic_socket, socket)->psock; |
| 734 | u_short addr, ctl; |
| 735 | u_long base, len, mmap; |
| 736 | |
Dominik Brodowski | c9f50dd | 2009-10-23 12:56:46 +0200 | [diff] [blame] | 737 | dev_dbg(&sock->dev, "SetMemMap(%d, %d, %#2.2x, %d ns, " |
Greg Kroah-Hartman | 490ab72 | 2006-06-12 15:17:34 -0700 | [diff] [blame] | 738 | "%#llx-%#llx, %#x)\n", psock, mem->map, mem->flags, |
| 739 | mem->speed, (unsigned long long)mem->res->start, |
| 740 | (unsigned long long)mem->res->end, mem->card_start); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | if ((mem->map > 3) || (mem->card_start > 0x3ffffff) || |
| 742 | (mem->res->start > 0xffffff) || (mem->res->end > 0xffffff) || |
| 743 | (mem->res->start > mem->res->end) || (mem->speed > 1000)) |
| 744 | return -EINVAL; |
| 745 | tcic_setw(TCIC_ADDR+2, TCIC_ADR2_INDREG | (psock << TCIC_SS_SHFT)); |
| 746 | addr = TCIC_MWIN(psock, mem->map); |
| 747 | |
| 748 | base = mem->res->start; len = mem->res->end - mem->res->start; |
| 749 | if ((len & (len+1)) || (base & len)) return -EINVAL; |
| 750 | if (len == 0x0fff) |
| 751 | base = (base >> TCIC_MBASE_HA_SHFT) | TCIC_MBASE_4K_BIT; |
| 752 | else |
| 753 | base = (base | (len+1)>>1) >> TCIC_MBASE_HA_SHFT; |
| 754 | tcic_setw(TCIC_ADDR, addr + TCIC_MBASE_X); |
| 755 | tcic_setw(TCIC_DATA, base); |
| 756 | |
| 757 | mmap = mem->card_start - mem->res->start; |
| 758 | mmap = (mmap >> TCIC_MMAP_CA_SHFT) & TCIC_MMAP_CA_MASK; |
| 759 | if (mem->flags & MAP_ATTRIB) mmap |= TCIC_MMAP_REG; |
| 760 | tcic_setw(TCIC_ADDR, addr + TCIC_MMAP_X); |
| 761 | tcic_setw(TCIC_DATA, mmap); |
| 762 | |
| 763 | ctl = TCIC_MCTL_QUIET | (psock << TCIC_MCTL_SS_SHFT); |
| 764 | ctl |= to_cycles(mem->speed) & TCIC_MCTL_WSCNT_MASK; |
| 765 | ctl |= (mem->flags & MAP_16BIT) ? 0 : TCIC_MCTL_B8; |
| 766 | ctl |= (mem->flags & MAP_WRPROT) ? TCIC_MCTL_WP : 0; |
| 767 | ctl |= (mem->flags & MAP_ACTIVE) ? TCIC_MCTL_ENA : 0; |
| 768 | tcic_setw(TCIC_ADDR, addr + TCIC_MCTL_X); |
| 769 | tcic_setw(TCIC_DATA, ctl); |
| 770 | |
| 771 | return 0; |
| 772 | } /* tcic_set_mem_map */ |
| 773 | |
| 774 | /*====================================================================*/ |
| 775 | |
| 776 | static int tcic_init(struct pcmcia_socket *s) |
| 777 | { |
| 778 | int i; |
| 779 | struct resource res = { .start = 0, .end = 0x1000 }; |
| 780 | pccard_io_map io = { 0, 0, 0, 0, 1 }; |
| 781 | pccard_mem_map mem = { .res = &res, }; |
| 782 | |
| 783 | for (i = 0; i < 2; i++) { |
| 784 | io.map = i; |
| 785 | tcic_set_io_map(s, &io); |
| 786 | } |
| 787 | for (i = 0; i < 5; i++) { |
| 788 | mem.map = i; |
| 789 | tcic_set_mem_map(s, &mem); |
| 790 | } |
| 791 | return 0; |
| 792 | } |
| 793 | |
| 794 | static struct pccard_operations tcic_operations = { |
| 795 | .init = tcic_init, |
| 796 | .get_status = tcic_get_status, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 797 | .set_socket = tcic_set_socket, |
| 798 | .set_io_map = tcic_set_io_map, |
| 799 | .set_mem_map = tcic_set_mem_map, |
| 800 | }; |
| 801 | |
| 802 | /*====================================================================*/ |
| 803 | |
| 804 | module_init(init_tcic); |
| 805 | module_exit(exit_tcic); |