1 /* 2 * Device driver for the via-pmu on Apple Powermacs. 3 * 4 * The VIA (versatile interface adapter) interfaces to the PMU, 5 * a 6805 microprocessor core whose primary function is to control 6 * battery charging and system power on the PowerBook 3400 and 2400. 7 * The PMU also controls the ADB (Apple Desktop Bus) which connects 8 * to the keyboard and mouse, as well as the non-volatile RAM 9 * and the RTC (real time clock) chip. 10 * 11 * Copyright (C) 1998 Paul Mackerras and Fabio Riccardi. 12 * Copyright (C) 2001-2002 Benjamin Herrenschmidt 13 * 14 * THIS DRIVER IS BECOMING A TOTAL MESS ! 15 * - Cleanup atomically disabling reply to PMU events after 16 * a sleep or a freq. switch 17 * - Move sleep code out of here to pmac_pm, merge into new 18 * common PM infrastructure 19 * - Move backlight code out as well 20 * - Save/Restore PCI space properly 21 * 22 */ 23 #include <stdarg.h> 24 #include <linux/types.h> 25 #include <linux/errno.h> 26 #include <linux/kernel.h> 27 #include <linux/delay.h> 28 #include <linux/sched.h> 29 #include <linux/miscdevice.h> 30 #include <linux/blkdev.h> 31 #include <linux/pci.h> 32 #include <linux/slab.h> 33 #include <linux/poll.h> 34 #include <linux/adb.h> 35 #include <linux/pmu.h> 36 #include <linux/cuda.h> 37 #include <linux/smp_lock.h> 38 #include <linux/module.h> 39 #include <linux/spinlock.h> 40 #include <linux/pm.h> 41 #include <linux/proc_fs.h> 42 #include <linux/init.h> 43 #include <linux/interrupt.h> 44 #include <linux/device.h> 45 #include <linux/sysdev.h> 46 #include <linux/suspend.h> 47 #include <linux/syscalls.h> 48 #include <linux/cpu.h> 49 #include <asm/prom.h> 50 #include <asm/machdep.h> 51 #include <asm/io.h> 52 #include <asm/pgtable.h> 53 #include <asm/system.h> 54 #include <asm/sections.h> 55 #include <asm/irq.h> 56 #include <asm/pmac_feature.h> 57 #include <asm/pmac_pfunc.h> 58 #include <asm/pmac_low_i2c.h> 59 #include <asm/uaccess.h> 60 #include <asm/mmu_context.h> 61 #include <asm/cputable.h> 62 #include <asm/time.h> 63 #ifdef CONFIG_PMAC_BACKLIGHT 64 #include <asm/backlight.h> 65 #endif 66 67 #include "via-pmu-event.h" 68 69 /* Some compile options */ 70 #undef SUSPEND_USES_PMU 71 #define DEBUG_SLEEP 72 #undef HACKED_PCI_SAVE 73 74 /* Misc minor number allocated for /dev/pmu */ 75 #define PMU_MINOR 154 76 77 /* How many iterations between battery polls */ 78 #define BATTERY_POLLING_COUNT 2 79 80 static volatile unsigned char __iomem *via; 81 82 /* VIA registers - spaced 0x200 bytes apart */ 83 #define RS 0x200 /* skip between registers */ 84 #define B 0 /* B-side data */ 85 #define A RS /* A-side data */ 86 #define DIRB (2*RS) /* B-side direction (1=output) */ 87 #define DIRA (3*RS) /* A-side direction (1=output) */ 88 #define T1CL (4*RS) /* Timer 1 ctr/latch (low 8 bits) */ 89 #define T1CH (5*RS) /* Timer 1 counter (high 8 bits) */ 90 #define T1LL (6*RS) /* Timer 1 latch (low 8 bits) */ 91 #define T1LH (7*RS) /* Timer 1 latch (high 8 bits) */ 92 #define T2CL (8*RS) /* Timer 2 ctr/latch (low 8 bits) */ 93 #define T2CH (9*RS) /* Timer 2 counter (high 8 bits) */ 94 #define SR (10*RS) /* Shift register */ 95 #define ACR (11*RS) /* Auxiliary control register */ 96 #define PCR (12*RS) /* Peripheral control register */ 97 #define IFR (13*RS) /* Interrupt flag register */ 98 #define IER (14*RS) /* Interrupt enable register */ 99 #define ANH (15*RS) /* A-side data, no handshake */ 100 101 /* Bits in B data register: both active low */ 102 #define TACK 0x08 /* Transfer acknowledge (input) */ 103 #define TREQ 0x10 /* Transfer request (output) */ 104 105 /* Bits in ACR */ 106 #define SR_CTRL 0x1c /* Shift register control bits */ 107 #define SR_EXT 0x0c /* Shift on external clock */ 108 #define SR_OUT 0x10 /* Shift out if 1 */ 109 110 /* Bits in IFR and IER */ 111 #define IER_SET 0x80 /* set bits in IER */ 112 #define IER_CLR 0 /* clear bits in IER */ 113 #define SR_INT 0x04 /* Shift register full/empty */ 114 #define CB2_INT 0x08 115 #define CB1_INT 0x10 /* transition on CB1 input */ 116 117 static volatile enum pmu_state { 118 idle, 119 sending, 120 intack, 121 reading, 122 reading_intr, 123 locked, 124 } pmu_state; 125 126 static volatile enum int_data_state { 127 int_data_empty, 128 int_data_fill, 129 int_data_ready, 130 int_data_flush 131 } int_data_state[2] = { int_data_empty, int_data_empty }; 132 133 static struct adb_request *current_req; 134 static struct adb_request *last_req; 135 static struct adb_request *req_awaiting_reply; 136 static unsigned char interrupt_data[2][32]; 137 static int interrupt_data_len[2]; 138 static int int_data_last; 139 static unsigned char *reply_ptr; 140 static int data_index; 141 static int data_len; 142 static volatile int adb_int_pending; 143 static volatile int disable_poll; 144 static struct device_node *vias; 145 static int pmu_kind = PMU_UNKNOWN; 146 static int pmu_fully_inited = 0; 147 static int pmu_has_adb; 148 static struct device_node *gpio_node; 149 static unsigned char __iomem *gpio_reg = NULL; 150 static int gpio_irq = NO_IRQ; 151 static int gpio_irq_enabled = -1; 152 static volatile int pmu_suspended = 0; 153 static spinlock_t pmu_lock; 154 static u8 pmu_intr_mask; 155 static int pmu_version; 156 static int drop_interrupts; 157 #if defined(CONFIG_PM) && defined(CONFIG_PPC32) 158 static int option_lid_wakeup = 1; 159 #endif /* CONFIG_PM && CONFIG_PPC32 */ 160 #if (defined(CONFIG_PM)&&defined(CONFIG_PPC32))||defined(CONFIG_PMAC_BACKLIGHT_LEGACY) 161 static int sleep_in_progress; 162 #endif 163 static unsigned long async_req_locks; 164 static unsigned int pmu_irq_stats[11]; 165 166 static struct proc_dir_entry *proc_pmu_root; 167 static struct proc_dir_entry *proc_pmu_info; 168 static struct proc_dir_entry *proc_pmu_irqstats; 169 static struct proc_dir_entry *proc_pmu_options; 170 static int option_server_mode; 171 172 int pmu_battery_count; 173 int pmu_cur_battery; 174 unsigned int pmu_power_flags; 175 struct pmu_battery_info pmu_batteries[PMU_MAX_BATTERIES]; 176 static int query_batt_timer = BATTERY_POLLING_COUNT; 177 static struct adb_request batt_req; 178 static struct proc_dir_entry *proc_pmu_batt[PMU_MAX_BATTERIES]; 179 180 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) 181 extern int disable_kernel_backlight; 182 #endif /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */ 183 184 int __fake_sleep; 185 int asleep; 186 BLOCKING_NOTIFIER_HEAD(sleep_notifier_list); 187 188 #ifdef CONFIG_ADB 189 static int adb_dev_map = 0; 190 static int pmu_adb_flags; 191 192 static int pmu_probe(void); 193 static int pmu_init(void); 194 static int pmu_send_request(struct adb_request *req, int sync); 195 static int pmu_adb_autopoll(int devs); 196 static int pmu_adb_reset_bus(void); 197 #endif /* CONFIG_ADB */ 198 199 static int init_pmu(void); 200 static void pmu_start(void); 201 static irqreturn_t via_pmu_interrupt(int irq, void *arg, struct pt_regs *regs); 202 static irqreturn_t gpio1_interrupt(int irq, void *arg, struct pt_regs *regs); 203 static int proc_get_info(char *page, char **start, off_t off, 204 int count, int *eof, void *data); 205 static int proc_get_irqstats(char *page, char **start, off_t off, 206 int count, int *eof, void *data); 207 static void pmu_pass_intr(unsigned char *data, int len); 208 static int proc_get_batt(char *page, char **start, off_t off, 209 int count, int *eof, void *data); 210 static int proc_read_options(char *page, char **start, off_t off, 211 int count, int *eof, void *data); 212 static int proc_write_options(struct file *file, const char __user *buffer, 213 unsigned long count, void *data); 214 215 #ifdef CONFIG_ADB 216 struct adb_driver via_pmu_driver = { 217 "PMU", 218 pmu_probe, 219 pmu_init, 220 pmu_send_request, 221 pmu_adb_autopoll, 222 pmu_poll_adb, 223 pmu_adb_reset_bus 224 }; 225 #endif /* CONFIG_ADB */ 226 227 extern void low_sleep_handler(void); 228 extern void enable_kernel_altivec(void); 229 extern void enable_kernel_fp(void); 230 231 #ifdef DEBUG_SLEEP 232 int pmu_polled_request(struct adb_request *req); 233 int pmu_wink(struct adb_request *req); 234 #endif 235 236 /* 237 * This table indicates for each PMU opcode: 238 * - the number of data bytes to be sent with the command, or -1 239 * if a length byte should be sent, 240 * - the number of response bytes which the PMU will return, or 241 * -1 if it will send a length byte. 242 */ 243 static const s8 pmu_data_len[256][2] = { 244 /* 0 1 2 3 4 5 6 7 */ 245 /*00*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, 246 /*08*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1}, 247 /*10*/ { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, 248 /*18*/ { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0, 0}, 249 /*20*/ {-1, 0},{ 0, 0},{ 2, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0}, 250 /*28*/ { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{ 0,-1}, 251 /*30*/ { 4, 0},{20, 0},{-1, 0},{ 3, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, 252 /*38*/ { 0, 4},{ 0,20},{ 2,-1},{ 2, 1},{ 3,-1},{-1,-1},{-1,-1},{ 4, 0}, 253 /*40*/ { 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, 254 /*48*/ { 0, 1},{ 0, 1},{-1,-1},{ 1, 0},{ 1, 0},{-1,-1},{-1,-1},{-1,-1}, 255 /*50*/ { 1, 0},{ 0, 0},{ 2, 0},{ 2, 0},{-1, 0},{ 1, 0},{ 3, 0},{ 1, 0}, 256 /*58*/ { 0, 1},{ 1, 0},{ 0, 2},{ 0, 2},{ 0,-1},{-1,-1},{-1,-1},{-1,-1}, 257 /*60*/ { 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, 258 /*68*/ { 0, 3},{ 0, 3},{ 0, 2},{ 0, 8},{ 0,-1},{ 0,-1},{-1,-1},{-1,-1}, 259 /*70*/ { 1, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, 260 /*78*/ { 0,-1},{ 0,-1},{-1,-1},{-1,-1},{-1,-1},{ 5, 1},{ 4, 1},{ 4, 1}, 261 /*80*/ { 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, 262 /*88*/ { 0, 5},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1}, 263 /*90*/ { 1, 0},{ 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, 264 /*98*/ { 0, 1},{ 0, 1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1}, 265 /*a0*/ { 2, 0},{ 2, 0},{ 2, 0},{ 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0}, 266 /*a8*/ { 1, 1},{ 1, 0},{ 3, 0},{ 2, 0},{-1,-1},{-1,-1},{-1,-1},{-1,-1}, 267 /*b0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, 268 /*b8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1}, 269 /*c0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, 270 /*c8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1}, 271 /*d0*/ { 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, 272 /*d8*/ { 1, 1},{ 1, 1},{-1,-1},{-1,-1},{ 0, 1},{ 0,-1},{-1,-1},{-1,-1}, 273 /*e0*/ {-1, 0},{ 4, 0},{ 0, 1},{-1, 0},{-1, 0},{ 4, 0},{-1, 0},{-1, 0}, 274 /*e8*/ { 3,-1},{-1,-1},{ 0, 1},{-1,-1},{ 0,-1},{-1,-1},{-1,-1},{ 0, 0}, 275 /*f0*/ {-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0}, 276 /*f8*/ {-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1},{-1,-1}, 277 }; 278 279 static char *pbook_type[] = { 280 "Unknown PowerBook", 281 "PowerBook 2400/3400/3500(G3)", 282 "PowerBook G3 Series", 283 "1999 PowerBook G3", 284 "Core99" 285 }; 286 287 int __init find_via_pmu(void) 288 { 289 u64 taddr; 290 u32 *reg; 291 292 if (via != 0) 293 return 1; 294 vias = of_find_node_by_name(NULL, "via-pmu"); 295 if (vias == NULL) 296 return 0; 297 298 reg = (u32 *)get_property(vias, "reg", NULL); 299 if (reg == NULL) { 300 printk(KERN_ERR "via-pmu: No \"reg\" property !\n"); 301 goto fail; 302 } 303 taddr = of_translate_address(vias, reg); 304 if (taddr == OF_BAD_ADDR) { 305 printk(KERN_ERR "via-pmu: Can't translate address !\n"); 306 goto fail; 307 } 308 309 spin_lock_init(&pmu_lock); 310 311 pmu_has_adb = 1; 312 313 pmu_intr_mask = PMU_INT_PCEJECT | 314 PMU_INT_SNDBRT | 315 PMU_INT_ADB | 316 PMU_INT_TICK; 317 318 if (vias->parent->name && ((strcmp(vias->parent->name, "ohare") == 0) 319 || device_is_compatible(vias->parent, "ohare"))) 320 pmu_kind = PMU_OHARE_BASED; 321 else if (device_is_compatible(vias->parent, "paddington")) 322 pmu_kind = PMU_PADDINGTON_BASED; 323 else if (device_is_compatible(vias->parent, "heathrow")) 324 pmu_kind = PMU_HEATHROW_BASED; 325 else if (device_is_compatible(vias->parent, "Keylargo") 326 || device_is_compatible(vias->parent, "K2-Keylargo")) { 327 struct device_node *gpiop; 328 u64 gaddr = OF_BAD_ADDR; 329 330 pmu_kind = PMU_KEYLARGO_BASED; 331 pmu_has_adb = (find_type_devices("adb") != NULL); 332 pmu_intr_mask = PMU_INT_PCEJECT | 333 PMU_INT_SNDBRT | 334 PMU_INT_ADB | 335 PMU_INT_TICK | 336 PMU_INT_ENVIRONMENT; 337 338 gpiop = of_find_node_by_name(NULL, "gpio"); 339 if (gpiop) { 340 reg = (u32 *)get_property(gpiop, "reg", NULL); 341 if (reg) 342 gaddr = of_translate_address(gpiop, reg); 343 if (gaddr != OF_BAD_ADDR) 344 gpio_reg = ioremap(gaddr, 0x10); 345 } 346 if (gpio_reg == NULL) 347 printk(KERN_ERR "via-pmu: Can't find GPIO reg !\n"); 348 } else 349 pmu_kind = PMU_UNKNOWN; 350 351 via = ioremap(taddr, 0x2000); 352 if (via == NULL) { 353 printk(KERN_ERR "via-pmu: Can't map address !\n"); 354 goto fail; 355 } 356 357 out_8(&via[IER], IER_CLR | 0x7f); /* disable all intrs */ 358 out_8(&via[IFR], 0x7f); /* clear IFR */ 359 360 pmu_state = idle; 361 362 if (!init_pmu()) { 363 via = NULL; 364 return 0; 365 } 366 367 printk(KERN_INFO "PMU driver v%d initialized for %s, firmware: %02x\n", 368 PMU_DRIVER_VERSION, pbook_type[pmu_kind], pmu_version); 369 370 sys_ctrler = SYS_CTRLER_PMU; 371 372 return 1; 373 fail: 374 of_node_put(vias); 375 vias = NULL; 376 return 0; 377 } 378 379 #ifdef CONFIG_ADB 380 static int pmu_probe(void) 381 { 382 return vias == NULL? -ENODEV: 0; 383 } 384 385 static int __init pmu_init(void) 386 { 387 if (vias == NULL) 388 return -ENODEV; 389 return 0; 390 } 391 #endif /* CONFIG_ADB */ 392 393 /* 394 * We can't wait until pmu_init gets called, that happens too late. 395 * It happens after IDE and SCSI initialization, which can take a few 396 * seconds, and by that time the PMU could have given up on us and 397 * turned us off. 398 * Thus this is called with arch_initcall rather than device_initcall. 399 */ 400 static int __init via_pmu_start(void) 401 { 402 unsigned int irq; 403 404 if (vias == NULL) 405 return -ENODEV; 406 407 batt_req.complete = 1; 408 409 irq = irq_of_parse_and_map(vias, 0); 410 if (irq == NO_IRQ) { 411 printk(KERN_ERR "via-pmu: can't map interruptn"); 412 return -ENODEV; 413 } 414 if (request_irq(irq, via_pmu_interrupt, 0, "VIA-PMU", (void *)0)) { 415 printk(KERN_ERR "via-pmu: can't request irq %d\n", irq); 416 return -ENODEV; 417 } 418 419 if (pmu_kind == PMU_KEYLARGO_BASED) { 420 gpio_node = of_find_node_by_name(NULL, "extint-gpio1"); 421 if (gpio_node == NULL) 422 gpio_node = of_find_node_by_name(NULL, 423 "pmu-interrupt"); 424 if (gpio_node) 425 gpio_irq = irq_of_parse_and_map(gpio_node, 0); 426 427 if (gpio_irq != NO_IRQ) { 428 if (request_irq(gpio_irq, gpio1_interrupt, 0, 429 "GPIO1 ADB", (void *)0)) 430 printk(KERN_ERR "pmu: can't get irq %d" 431 " (GPIO1)\n", gpio_irq); 432 else 433 gpio_irq_enabled = 1; 434 } 435 } 436 437 /* Enable interrupts */ 438 out_8(&via[IER], IER_SET | SR_INT | CB1_INT); 439 440 pmu_fully_inited = 1; 441 442 /* Make sure PMU settle down before continuing. This is _very_ important 443 * since the IDE probe may shut interrupts down for quite a bit of time. If 444 * a PMU communication is pending while this happens, the PMU may timeout 445 * Not that on Core99 machines, the PMU keeps sending us environement 446 * messages, we should find a way to either fix IDE or make it call 447 * pmu_suspend() before masking interrupts. This can also happens while 448 * scolling with some fbdevs. 449 */ 450 do { 451 pmu_poll(); 452 } while (pmu_state != idle); 453 454 return 0; 455 } 456 457 arch_initcall(via_pmu_start); 458 459 /* 460 * This has to be done after pci_init, which is a subsys_initcall. 461 */ 462 static int __init via_pmu_dev_init(void) 463 { 464 if (vias == NULL) 465 return -ENODEV; 466 467 #ifdef CONFIG_PMAC_BACKLIGHT 468 /* Initialize backlight */ 469 pmu_backlight_init(vias); 470 #endif 471 472 #ifdef CONFIG_PPC32 473 if (machine_is_compatible("AAPL,3400/2400") || 474 machine_is_compatible("AAPL,3500")) { 475 int mb = pmac_call_feature(PMAC_FTR_GET_MB_INFO, 476 NULL, PMAC_MB_INFO_MODEL, 0); 477 pmu_battery_count = 1; 478 if (mb == PMAC_TYPE_COMET) 479 pmu_batteries[0].flags |= PMU_BATT_TYPE_COMET; 480 else 481 pmu_batteries[0].flags |= PMU_BATT_TYPE_HOOPER; 482 } else if (machine_is_compatible("AAPL,PowerBook1998") || 483 machine_is_compatible("PowerBook1,1")) { 484 pmu_battery_count = 2; 485 pmu_batteries[0].flags |= PMU_BATT_TYPE_SMART; 486 pmu_batteries[1].flags |= PMU_BATT_TYPE_SMART; 487 } else { 488 struct device_node* prim = find_devices("power-mgt"); 489 u32 *prim_info = NULL; 490 if (prim) 491 prim_info = (u32 *)get_property(prim, "prim-info", NULL); 492 if (prim_info) { 493 /* Other stuffs here yet unknown */ 494 pmu_battery_count = (prim_info[6] >> 16) & 0xff; 495 pmu_batteries[0].flags |= PMU_BATT_TYPE_SMART; 496 if (pmu_battery_count > 1) 497 pmu_batteries[1].flags |= PMU_BATT_TYPE_SMART; 498 } 499 } 500 #endif /* CONFIG_PPC32 */ 501 502 /* Create /proc/pmu */ 503 proc_pmu_root = proc_mkdir("pmu", NULL); 504 if (proc_pmu_root) { 505 long i; 506 507 for (i=0; i<pmu_battery_count; i++) { 508 char title[16]; 509 sprintf(title, "battery_%ld", i); 510 proc_pmu_batt[i] = create_proc_read_entry(title, 0, proc_pmu_root, 511 proc_get_batt, (void *)i); 512 } 513 514 proc_pmu_info = create_proc_read_entry("info", 0, proc_pmu_root, 515 proc_get_info, NULL); 516 proc_pmu_irqstats = create_proc_read_entry("interrupts", 0, proc_pmu_root, 517 proc_get_irqstats, NULL); 518 proc_pmu_options = create_proc_entry("options", 0600, proc_pmu_root); 519 if (proc_pmu_options) { 520 proc_pmu_options->nlink = 1; 521 proc_pmu_options->read_proc = proc_read_options; 522 proc_pmu_options->write_proc = proc_write_options; 523 } 524 } 525 return 0; 526 } 527 528 device_initcall(via_pmu_dev_init); 529 530 static int 531 init_pmu(void) 532 { 533 int timeout; 534 struct adb_request req; 535 536 out_8(&via[B], via[B] | TREQ); /* negate TREQ */ 537 out_8(&via[DIRB], (via[DIRB] | TREQ) & ~TACK); /* TACK in, TREQ out */ 538 539 pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask); 540 timeout = 100000; 541 while (!req.complete) { 542 if (--timeout < 0) { 543 printk(KERN_ERR "init_pmu: no response from PMU\n"); 544 return 0; 545 } 546 udelay(10); 547 pmu_poll(); 548 } 549 550 /* ack all pending interrupts */ 551 timeout = 100000; 552 interrupt_data[0][0] = 1; 553 while (interrupt_data[0][0] || pmu_state != idle) { 554 if (--timeout < 0) { 555 printk(KERN_ERR "init_pmu: timed out acking intrs\n"); 556 return 0; 557 } 558 if (pmu_state == idle) 559 adb_int_pending = 1; 560 via_pmu_interrupt(0, NULL, NULL); 561 udelay(10); 562 } 563 564 /* Tell PMU we are ready. */ 565 if (pmu_kind == PMU_KEYLARGO_BASED) { 566 pmu_request(&req, NULL, 2, PMU_SYSTEM_READY, 2); 567 while (!req.complete) 568 pmu_poll(); 569 } 570 571 /* Read PMU version */ 572 pmu_request(&req, NULL, 1, PMU_GET_VERSION); 573 pmu_wait_complete(&req); 574 if (req.reply_len > 0) 575 pmu_version = req.reply[0]; 576 577 /* Read server mode setting */ 578 if (pmu_kind == PMU_KEYLARGO_BASED) { 579 pmu_request(&req, NULL, 2, PMU_POWER_EVENTS, 580 PMU_PWR_GET_POWERUP_EVENTS); 581 pmu_wait_complete(&req); 582 if (req.reply_len == 2) { 583 if (req.reply[1] & PMU_PWR_WAKEUP_AC_INSERT) 584 option_server_mode = 1; 585 printk(KERN_INFO "via-pmu: Server Mode is %s\n", 586 option_server_mode ? "enabled" : "disabled"); 587 } 588 } 589 return 1; 590 } 591 592 int 593 pmu_get_model(void) 594 { 595 return pmu_kind; 596 } 597 598 static void pmu_set_server_mode(int server_mode) 599 { 600 struct adb_request req; 601 602 if (pmu_kind != PMU_KEYLARGO_BASED) 603 return; 604 605 option_server_mode = server_mode; 606 pmu_request(&req, NULL, 2, PMU_POWER_EVENTS, PMU_PWR_GET_POWERUP_EVENTS); 607 pmu_wait_complete(&req); 608 if (req.reply_len < 2) 609 return; 610 if (server_mode) 611 pmu_request(&req, NULL, 4, PMU_POWER_EVENTS, 612 PMU_PWR_SET_POWERUP_EVENTS, 613 req.reply[0], PMU_PWR_WAKEUP_AC_INSERT); 614 else 615 pmu_request(&req, NULL, 4, PMU_POWER_EVENTS, 616 PMU_PWR_CLR_POWERUP_EVENTS, 617 req.reply[0], PMU_PWR_WAKEUP_AC_INSERT); 618 pmu_wait_complete(&req); 619 } 620 621 /* This new version of the code for 2400/3400/3500 powerbooks 622 * is inspired from the implementation in gkrellm-pmu 623 */ 624 static void 625 done_battery_state_ohare(struct adb_request* req) 626 { 627 /* format: 628 * [0] : flags 629 * 0x01 : AC indicator 630 * 0x02 : charging 631 * 0x04 : battery exist 632 * 0x08 : 633 * 0x10 : 634 * 0x20 : full charged 635 * 0x40 : pcharge reset 636 * 0x80 : battery exist 637 * 638 * [1][2] : battery voltage 639 * [3] : CPU temperature 640 * [4] : battery temperature 641 * [5] : current 642 * [6][7] : pcharge 643 * --tkoba 644 */ 645 unsigned int bat_flags = PMU_BATT_TYPE_HOOPER; 646 long pcharge, charge, vb, vmax, lmax; 647 long vmax_charging, vmax_charged; 648 long amperage, voltage, time, max; 649 int mb = pmac_call_feature(PMAC_FTR_GET_MB_INFO, 650 NULL, PMAC_MB_INFO_MODEL, 0); 651 652 if (req->reply[0] & 0x01) 653 pmu_power_flags |= PMU_PWR_AC_PRESENT; 654 else 655 pmu_power_flags &= ~PMU_PWR_AC_PRESENT; 656 657 if (mb == PMAC_TYPE_COMET) { 658 vmax_charged = 189; 659 vmax_charging = 213; 660 lmax = 6500; 661 } else { 662 vmax_charged = 330; 663 vmax_charging = 330; 664 lmax = 6500; 665 } 666 vmax = vmax_charged; 667 668 /* If battery installed */ 669 if (req->reply[0] & 0x04) { 670 bat_flags |= PMU_BATT_PRESENT; 671 if (req->reply[0] & 0x02) 672 bat_flags |= PMU_BATT_CHARGING; 673 vb = (req->reply[1] << 8) | req->reply[2]; 674 voltage = (vb * 265 + 72665) / 10; 675 amperage = req->reply[5]; 676 if ((req->reply[0] & 0x01) == 0) { 677 if (amperage > 200) 678 vb += ((amperage - 200) * 15)/100; 679 } else if (req->reply[0] & 0x02) { 680 vb = (vb * 97) / 100; 681 vmax = vmax_charging; 682 } 683 charge = (100 * vb) / vmax; 684 if (req->reply[0] & 0x40) { 685 pcharge = (req->reply[6] << 8) + req->reply[7]; 686 if (pcharge > lmax) 687 pcharge = lmax; 688 pcharge *= 100; 689 pcharge = 100 - pcharge / lmax; 690 if (pcharge < charge) 691 charge = pcharge; 692 } 693 if (amperage > 0) 694 time = (charge * 16440) / amperage; 695 else 696 time = 0; 697 max = 100; 698 amperage = -amperage; 699 } else 700 charge = max = amperage = voltage = time = 0; 701 702 pmu_batteries[pmu_cur_battery].flags = bat_flags; 703 pmu_batteries[pmu_cur_battery].charge = charge; 704 pmu_batteries[pmu_cur_battery].max_charge = max; 705 pmu_batteries[pmu_cur_battery].amperage = amperage; 706 pmu_batteries[pmu_cur_battery].voltage = voltage; 707 pmu_batteries[pmu_cur_battery].time_remaining = time; 708 709 clear_bit(0, &async_req_locks); 710 } 711 712 static void 713 done_battery_state_smart(struct adb_request* req) 714 { 715 /* format: 716 * [0] : format of this structure (known: 3,4,5) 717 * [1] : flags 718 * 719 * format 3 & 4: 720 * 721 * [2] : charge 722 * [3] : max charge 723 * [4] : current 724 * [5] : voltage 725 * 726 * format 5: 727 * 728 * [2][3] : charge 729 * [4][5] : max charge 730 * [6][7] : current 731 * [8][9] : voltage 732 */ 733 734 unsigned int bat_flags = PMU_BATT_TYPE_SMART; 735 int amperage; 736 unsigned int capa, max, voltage; 737 738 if (req->reply[1] & 0x01) 739 pmu_power_flags |= PMU_PWR_AC_PRESENT; 740 else 741 pmu_power_flags &= ~PMU_PWR_AC_PRESENT; 742 743 744 capa = max = amperage = voltage = 0; 745 746 if (req->reply[1] & 0x04) { 747 bat_flags |= PMU_BATT_PRESENT; 748 switch(req->reply[0]) { 749 case 3: 750 case 4: capa = req->reply[2]; 751 max = req->reply[3]; 752 amperage = *((signed char *)&req->reply[4]); 753 voltage = req->reply[5]; 754 break; 755 case 5: capa = (req->reply[2] << 8) | req->reply[3]; 756 max = (req->reply[4] << 8) | req->reply[5]; 757 amperage = *((signed short *)&req->reply[6]); 758 voltage = (req->reply[8] << 8) | req->reply[9]; 759 break; 760 default: 761 printk(KERN_WARNING "pmu.c : unrecognized battery info, len: %d, %02x %02x %02x %02x\n", 762 req->reply_len, req->reply[0], req->reply[1], req->reply[2], req->reply[3]); 763 break; 764 } 765 } 766 767 if ((req->reply[1] & 0x01) && (amperage > 0)) 768 bat_flags |= PMU_BATT_CHARGING; 769 770 pmu_batteries[pmu_cur_battery].flags = bat_flags; 771 pmu_batteries[pmu_cur_battery].charge = capa; 772 pmu_batteries[pmu_cur_battery].max_charge = max; 773 pmu_batteries[pmu_cur_battery].amperage = amperage; 774 pmu_batteries[pmu_cur_battery].voltage = voltage; 775 if (amperage) { 776 if ((req->reply[1] & 0x01) && (amperage > 0)) 777 pmu_batteries[pmu_cur_battery].time_remaining 778 = ((max-capa) * 3600) / amperage; 779 else 780 pmu_batteries[pmu_cur_battery].time_remaining 781 = (capa * 3600) / (-amperage); 782 } else 783 pmu_batteries[pmu_cur_battery].time_remaining = 0; 784 785 pmu_cur_battery = (pmu_cur_battery + 1) % pmu_battery_count; 786 787 clear_bit(0, &async_req_locks); 788 } 789 790 static void 791 query_battery_state(void) 792 { 793 if (test_and_set_bit(0, &async_req_locks)) 794 return; 795 if (pmu_kind == PMU_OHARE_BASED) 796 pmu_request(&batt_req, done_battery_state_ohare, 797 1, PMU_BATTERY_STATE); 798 else 799 pmu_request(&batt_req, done_battery_state_smart, 800 2, PMU_SMART_BATTERY_STATE, pmu_cur_battery+1); 801 } 802 803 static int 804 proc_get_info(char *page, char **start, off_t off, 805 int count, int *eof, void *data) 806 { 807 char* p = page; 808 809 p += sprintf(p, "PMU driver version : %d\n", PMU_DRIVER_VERSION); 810 p += sprintf(p, "PMU firmware version : %02x\n", pmu_version); 811 p += sprintf(p, "AC Power : %d\n", 812 ((pmu_power_flags & PMU_PWR_AC_PRESENT) != 0) || pmu_battery_count == 0); 813 p += sprintf(p, "Battery count : %d\n", pmu_battery_count); 814 815 return p - page; 816 } 817 818 static int 819 proc_get_irqstats(char *page, char **start, off_t off, 820 int count, int *eof, void *data) 821 { 822 int i; 823 char* p = page; 824 static const char *irq_names[] = { 825 "Total CB1 triggered events", 826 "Total GPIO1 triggered events", 827 "PC-Card eject button", 828 "Sound/Brightness button", 829 "ADB message", 830 "Battery state change", 831 "Environment interrupt", 832 "Tick timer", 833 "Ghost interrupt (zero len)", 834 "Empty interrupt (empty mask)", 835 "Max irqs in a row" 836 }; 837 838 for (i=0; i<11; i++) { 839 p += sprintf(p, " %2u: %10u (%s)\n", 840 i, pmu_irq_stats[i], irq_names[i]); 841 } 842 return p - page; 843 } 844 845 static int 846 proc_get_batt(char *page, char **start, off_t off, 847 int count, int *eof, void *data) 848 { 849 long batnum = (long)data; 850 char *p = page; 851 852 p += sprintf(p, "\n"); 853 p += sprintf(p, "flags : %08x\n", 854 pmu_batteries[batnum].flags); 855 p += sprintf(p, "charge : %d\n", 856 pmu_batteries[batnum].charge); 857 p += sprintf(p, "max_charge : %d\n", 858 pmu_batteries[batnum].max_charge); 859 p += sprintf(p, "current : %d\n", 860 pmu_batteries[batnum].amperage); 861 p += sprintf(p, "voltage : %d\n", 862 pmu_batteries[batnum].voltage); 863 p += sprintf(p, "time rem. : %d\n", 864 pmu_batteries[batnum].time_remaining); 865 866 return p - page; 867 } 868 869 static int 870 proc_read_options(char *page, char **start, off_t off, 871 int count, int *eof, void *data) 872 { 873 char *p = page; 874 875 #if defined(CONFIG_PM) && defined(CONFIG_PPC32) 876 if (pmu_kind == PMU_KEYLARGO_BASED && 877 pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) >= 0) 878 p += sprintf(p, "lid_wakeup=%d\n", option_lid_wakeup); 879 #endif 880 if (pmu_kind == PMU_KEYLARGO_BASED) 881 p += sprintf(p, "server_mode=%d\n", option_server_mode); 882 883 return p - page; 884 } 885 886 static int 887 proc_write_options(struct file *file, const char __user *buffer, 888 unsigned long count, void *data) 889 { 890 char tmp[33]; 891 char *label, *val; 892 unsigned long fcount = count; 893 894 if (!count) 895 return -EINVAL; 896 if (count > 32) 897 count = 32; 898 if (copy_from_user(tmp, buffer, count)) 899 return -EFAULT; 900 tmp[count] = 0; 901 902 label = tmp; 903 while(*label == ' ') 904 label++; 905 val = label; 906 while(*val && (*val != '=')) { 907 if (*val == ' ') 908 *val = 0; 909 val++; 910 } 911 if ((*val) == 0) 912 return -EINVAL; 913 *(val++) = 0; 914 while(*val == ' ') 915 val++; 916 #if defined(CONFIG_PM) && defined(CONFIG_PPC32) 917 if (pmu_kind == PMU_KEYLARGO_BASED && 918 pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) >= 0) 919 if (!strcmp(label, "lid_wakeup")) 920 option_lid_wakeup = ((*val) == '1'); 921 #endif 922 if (pmu_kind == PMU_KEYLARGO_BASED && !strcmp(label, "server_mode")) { 923 int new_value; 924 new_value = ((*val) == '1'); 925 if (new_value != option_server_mode) 926 pmu_set_server_mode(new_value); 927 } 928 return fcount; 929 } 930 931 #ifdef CONFIG_ADB 932 /* Send an ADB command */ 933 static int 934 pmu_send_request(struct adb_request *req, int sync) 935 { 936 int i, ret; 937 938 if ((vias == NULL) || (!pmu_fully_inited)) { 939 req->complete = 1; 940 return -ENXIO; 941 } 942 943 ret = -EINVAL; 944 945 switch (req->data[0]) { 946 case PMU_PACKET: 947 for (i = 0; i < req->nbytes - 1; ++i) 948 req->data[i] = req->data[i+1]; 949 --req->nbytes; 950 if (pmu_data_len[req->data[0]][1] != 0) { 951 req->reply[0] = ADB_RET_OK; 952 req->reply_len = 1; 953 } else 954 req->reply_len = 0; 955 ret = pmu_queue_request(req); 956 break; 957 case CUDA_PACKET: 958 switch (req->data[1]) { 959 case CUDA_GET_TIME: 960 if (req->nbytes != 2) 961 break; 962 req->data[0] = PMU_READ_RTC; 963 req->nbytes = 1; 964 req->reply_len = 3; 965 req->reply[0] = CUDA_PACKET; 966 req->reply[1] = 0; 967 req->reply[2] = CUDA_GET_TIME; 968 ret = pmu_queue_request(req); 969 break; 970 case CUDA_SET_TIME: 971 if (req->nbytes != 6) 972 break; 973 req->data[0] = PMU_SET_RTC; 974 req->nbytes = 5; 975 for (i = 1; i <= 4; ++i) 976 req->data[i] = req->data[i+1]; 977 req->reply_len = 3; 978 req->reply[0] = CUDA_PACKET; 979 req->reply[1] = 0; 980 req->reply[2] = CUDA_SET_TIME; 981 ret = pmu_queue_request(req); 982 break; 983 } 984 break; 985 case ADB_PACKET: 986 if (!pmu_has_adb) 987 return -ENXIO; 988 for (i = req->nbytes - 1; i > 1; --i) 989 req->data[i+2] = req->data[i]; 990 req->data[3] = req->nbytes - 2; 991 req->data[2] = pmu_adb_flags; 992 /*req->data[1] = req->data[1];*/ 993 req->data[0] = PMU_ADB_CMD; 994 req->nbytes += 2; 995 req->reply_expected = 1; 996 req->reply_len = 0; 997 ret = pmu_queue_request(req); 998 break; 999 } 1000 if (ret) { 1001 req->complete = 1; 1002 return ret; 1003 } 1004 1005 if (sync) 1006 while (!req->complete) 1007 pmu_poll(); 1008 1009 return 0; 1010 } 1011 1012 /* Enable/disable autopolling */ 1013 static int 1014 pmu_adb_autopoll(int devs) 1015 { 1016 struct adb_request req; 1017 1018 if ((vias == NULL) || (!pmu_fully_inited) || !pmu_has_adb) 1019 return -ENXIO; 1020 1021 if (devs) { 1022 adb_dev_map = devs; 1023 pmu_request(&req, NULL, 5, PMU_ADB_CMD, 0, 0x86, 1024 adb_dev_map >> 8, adb_dev_map); 1025 pmu_adb_flags = 2; 1026 } else { 1027 pmu_request(&req, NULL, 1, PMU_ADB_POLL_OFF); 1028 pmu_adb_flags = 0; 1029 } 1030 while (!req.complete) 1031 pmu_poll(); 1032 return 0; 1033 } 1034 1035 /* Reset the ADB bus */ 1036 static int 1037 pmu_adb_reset_bus(void) 1038 { 1039 struct adb_request req; 1040 int save_autopoll = adb_dev_map; 1041 1042 if ((vias == NULL) || (!pmu_fully_inited) || !pmu_has_adb) 1043 return -ENXIO; 1044 1045 /* anyone got a better idea?? */ 1046 pmu_adb_autopoll(0); 1047 1048 req.nbytes = 5; 1049 req.done = NULL; 1050 req.data[0] = PMU_ADB_CMD; 1051 req.data[1] = 0; 1052 req.data[2] = ADB_BUSRESET; 1053 req.data[3] = 0; 1054 req.data[4] = 0; 1055 req.reply_len = 0; 1056 req.reply_expected = 1; 1057 if (pmu_queue_request(&req) != 0) { 1058 printk(KERN_ERR "pmu_adb_reset_bus: pmu_queue_request failed\n"); 1059 return -EIO; 1060 } 1061 pmu_wait_complete(&req); 1062 1063 if (save_autopoll != 0) 1064 pmu_adb_autopoll(save_autopoll); 1065 1066 return 0; 1067 } 1068 #endif /* CONFIG_ADB */ 1069 1070 /* Construct and send a pmu request */ 1071 int 1072 pmu_request(struct adb_request *req, void (*done)(struct adb_request *), 1073 int nbytes, ...) 1074 { 1075 va_list list; 1076 int i; 1077 1078 if (vias == NULL) 1079 return -ENXIO; 1080 1081 if (nbytes < 0 || nbytes > 32) { 1082 printk(KERN_ERR "pmu_request: bad nbytes (%d)\n", nbytes); 1083 req->complete = 1; 1084 return -EINVAL; 1085 } 1086 req->nbytes = nbytes; 1087 req->done = done; 1088 va_start(list, nbytes); 1089 for (i = 0; i < nbytes; ++i) 1090 req->data[i] = va_arg(list, int); 1091 va_end(list); 1092 req->reply_len = 0; 1093 req->reply_expected = 0; 1094 return pmu_queue_request(req); 1095 } 1096 1097 int 1098 pmu_queue_request(struct adb_request *req) 1099 { 1100 unsigned long flags; 1101 int nsend; 1102 1103 if (via == NULL) { 1104 req->complete = 1; 1105 return -ENXIO; 1106 } 1107 if (req->nbytes <= 0) { 1108 req->complete = 1; 1109 return 0; 1110 } 1111 nsend = pmu_data_len[req->data[0]][0]; 1112 if (nsend >= 0 && req->nbytes != nsend + 1) { 1113 req->complete = 1; 1114 return -EINVAL; 1115 } 1116 1117 req->next = NULL; 1118 req->sent = 0; 1119 req->complete = 0; 1120 1121 spin_lock_irqsave(&pmu_lock, flags); 1122 if (current_req != 0) { 1123 last_req->next = req; 1124 last_req = req; 1125 } else { 1126 current_req = req; 1127 last_req = req; 1128 if (pmu_state == idle) 1129 pmu_start(); 1130 } 1131 spin_unlock_irqrestore(&pmu_lock, flags); 1132 1133 return 0; 1134 } 1135 1136 static inline void 1137 wait_for_ack(void) 1138 { 1139 /* Sightly increased the delay, I had one occurrence of the message 1140 * reported 1141 */ 1142 int timeout = 4000; 1143 while ((in_8(&via[B]) & TACK) == 0) { 1144 if (--timeout < 0) { 1145 printk(KERN_ERR "PMU not responding (!ack)\n"); 1146 return; 1147 } 1148 udelay(10); 1149 } 1150 } 1151 1152 /* New PMU seems to be very sensitive to those timings, so we make sure 1153 * PCI is flushed immediately */ 1154 static inline void 1155 send_byte(int x) 1156 { 1157 volatile unsigned char __iomem *v = via; 1158 1159 out_8(&v[ACR], in_8(&v[ACR]) | SR_OUT | SR_EXT); 1160 out_8(&v[SR], x); 1161 out_8(&v[B], in_8(&v[B]) & ~TREQ); /* assert TREQ */ 1162 (void)in_8(&v[B]); 1163 } 1164 1165 static inline void 1166 recv_byte(void) 1167 { 1168 volatile unsigned char __iomem *v = via; 1169 1170 out_8(&v[ACR], (in_8(&v[ACR]) & ~SR_OUT) | SR_EXT); 1171 in_8(&v[SR]); /* resets SR */ 1172 out_8(&v[B], in_8(&v[B]) & ~TREQ); 1173 (void)in_8(&v[B]); 1174 } 1175 1176 static inline void 1177 pmu_done(struct adb_request *req) 1178 { 1179 void (*done)(struct adb_request *) = req->done; 1180 mb(); 1181 req->complete = 1; 1182 /* Here, we assume that if the request has a done member, the 1183 * struct request will survive to setting req->complete to 1 1184 */ 1185 if (done) 1186 (*done)(req); 1187 } 1188 1189 static void 1190 pmu_start(void) 1191 { 1192 struct adb_request *req; 1193 1194 /* assert pmu_state == idle */ 1195 /* get the packet to send */ 1196 req = current_req; 1197 if (req == 0 || pmu_state != idle 1198 || (/*req->reply_expected && */req_awaiting_reply)) 1199 return; 1200 1201 pmu_state = sending; 1202 data_index = 1; 1203 data_len = pmu_data_len[req->data[0]][0]; 1204 1205 /* Sounds safer to make sure ACK is high before writing. This helped 1206 * kill a problem with ADB and some iBooks 1207 */ 1208 wait_for_ack(); 1209 /* set the shift register to shift out and send a byte */ 1210 send_byte(req->data[0]); 1211 } 1212 1213 void 1214 pmu_poll(void) 1215 { 1216 if (!via) 1217 return; 1218 if (disable_poll) 1219 return; 1220 via_pmu_interrupt(0, NULL, NULL); 1221 } 1222 1223 void 1224 pmu_poll_adb(void) 1225 { 1226 if (!via) 1227 return; 1228 if (disable_poll) 1229 return; 1230 /* Kicks ADB read when PMU is suspended */ 1231 adb_int_pending = 1; 1232 do { 1233 via_pmu_interrupt(0, NULL, NULL); 1234 } while (pmu_suspended && (adb_int_pending || pmu_state != idle 1235 || req_awaiting_reply)); 1236 } 1237 1238 void 1239 pmu_wait_complete(struct adb_request *req) 1240 { 1241 if (!via) 1242 return; 1243 while((pmu_state != idle && pmu_state != locked) || !req->complete) 1244 via_pmu_interrupt(0, NULL, NULL); 1245 } 1246 1247 /* This function loops until the PMU is idle and prevents it from 1248 * anwsering to ADB interrupts. pmu_request can still be called. 1249 * This is done to avoid spurrious shutdowns when we know we'll have 1250 * interrupts switched off for a long time 1251 */ 1252 void 1253 pmu_suspend(void) 1254 { 1255 unsigned long flags; 1256 #ifdef SUSPEND_USES_PMU 1257 struct adb_request *req; 1258 #endif 1259 if (!via) 1260 return; 1261 1262 spin_lock_irqsave(&pmu_lock, flags); 1263 pmu_suspended++; 1264 if (pmu_suspended > 1) { 1265 spin_unlock_irqrestore(&pmu_lock, flags); 1266 return; 1267 } 1268 1269 do { 1270 spin_unlock_irqrestore(&pmu_lock, flags); 1271 if (req_awaiting_reply) 1272 adb_int_pending = 1; 1273 via_pmu_interrupt(0, NULL, NULL); 1274 spin_lock_irqsave(&pmu_lock, flags); 1275 if (!adb_int_pending && pmu_state == idle && !req_awaiting_reply) { 1276 #ifdef SUSPEND_USES_PMU 1277 pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, 0); 1278 spin_unlock_irqrestore(&pmu_lock, flags); 1279 while(!req.complete) 1280 pmu_poll(); 1281 #else /* SUSPEND_USES_PMU */ 1282 if (gpio_irq >= 0) 1283 disable_irq_nosync(gpio_irq); 1284 out_8(&via[IER], CB1_INT | IER_CLR); 1285 spin_unlock_irqrestore(&pmu_lock, flags); 1286 #endif /* SUSPEND_USES_PMU */ 1287 break; 1288 } 1289 } while (1); 1290 } 1291 1292 void 1293 pmu_resume(void) 1294 { 1295 unsigned long flags; 1296 1297 if (!via || (pmu_suspended < 1)) 1298 return; 1299 1300 spin_lock_irqsave(&pmu_lock, flags); 1301 pmu_suspended--; 1302 if (pmu_suspended > 0) { 1303 spin_unlock_irqrestore(&pmu_lock, flags); 1304 return; 1305 } 1306 adb_int_pending = 1; 1307 #ifdef SUSPEND_USES_PMU 1308 pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask); 1309 spin_unlock_irqrestore(&pmu_lock, flags); 1310 while(!req.complete) 1311 pmu_poll(); 1312 #else /* SUSPEND_USES_PMU */ 1313 if (gpio_irq >= 0) 1314 enable_irq(gpio_irq); 1315 out_8(&via[IER], CB1_INT | IER_SET); 1316 spin_unlock_irqrestore(&pmu_lock, flags); 1317 pmu_poll(); 1318 #endif /* SUSPEND_USES_PMU */ 1319 } 1320 1321 /* Interrupt data could be the result data from an ADB cmd */ 1322 static void 1323 pmu_handle_data(unsigned char *data, int len, struct pt_regs *regs) 1324 { 1325 unsigned char ints, pirq; 1326 int i = 0; 1327 1328 asleep = 0; 1329 if (drop_interrupts || len < 1) { 1330 adb_int_pending = 0; 1331 pmu_irq_stats[8]++; 1332 return; 1333 } 1334 1335 /* Get PMU interrupt mask */ 1336 ints = data[0]; 1337 1338 /* Record zero interrupts for stats */ 1339 if (ints == 0) 1340 pmu_irq_stats[9]++; 1341 1342 /* Hack to deal with ADB autopoll flag */ 1343 if (ints & PMU_INT_ADB) 1344 ints &= ~(PMU_INT_ADB_AUTO | PMU_INT_AUTO_SRQ_POLL); 1345 1346 next: 1347 1348 if (ints == 0) { 1349 if (i > pmu_irq_stats[10]) 1350 pmu_irq_stats[10] = i; 1351 return; 1352 } 1353 1354 for (pirq = 0; pirq < 8; pirq++) 1355 if (ints & (1 << pirq)) 1356 break; 1357 pmu_irq_stats[pirq]++; 1358 i++; 1359 ints &= ~(1 << pirq); 1360 1361 /* Note: for some reason, we get an interrupt with len=1, 1362 * data[0]==0 after each normal ADB interrupt, at least 1363 * on the Pismo. Still investigating... --BenH 1364 */ 1365 if ((1 << pirq) & PMU_INT_ADB) { 1366 if ((data[0] & PMU_INT_ADB_AUTO) == 0) { 1367 struct adb_request *req = req_awaiting_reply; 1368 if (req == 0) { 1369 printk(KERN_ERR "PMU: extra ADB reply\n"); 1370 return; 1371 } 1372 req_awaiting_reply = NULL; 1373 if (len <= 2) 1374 req->reply_len = 0; 1375 else { 1376 memcpy(req->reply, data + 1, len - 1); 1377 req->reply_len = len - 1; 1378 } 1379 pmu_done(req); 1380 } else { 1381 if (len == 4 && data[1] == 0x2c) { 1382 extern int xmon_wants_key, xmon_adb_keycode; 1383 if (xmon_wants_key) { 1384 xmon_adb_keycode = data[2]; 1385 return; 1386 } 1387 } 1388 #ifdef CONFIG_ADB 1389 /* 1390 * XXX On the [23]400 the PMU gives us an up 1391 * event for keycodes 0x74 or 0x75 when the PC 1392 * card eject buttons are released, so we 1393 * ignore those events. 1394 */ 1395 if (!(pmu_kind == PMU_OHARE_BASED && len == 4 1396 && data[1] == 0x2c && data[3] == 0xff 1397 && (data[2] & ~1) == 0xf4)) 1398 adb_input(data+1, len-1, regs, 1); 1399 #endif /* CONFIG_ADB */ 1400 } 1401 } 1402 /* Sound/brightness button pressed */ 1403 else if ((1 << pirq) & PMU_INT_SNDBRT) { 1404 #ifdef CONFIG_PMAC_BACKLIGHT 1405 if (len == 3) 1406 #ifdef CONFIG_INPUT_ADBHID 1407 if (!disable_kernel_backlight) 1408 #endif /* CONFIG_INPUT_ADBHID */ 1409 pmac_backlight_set_legacy_brightness(data[1] >> 4); 1410 #endif /* CONFIG_PMAC_BACKLIGHT */ 1411 } 1412 /* Tick interrupt */ 1413 else if ((1 << pirq) & PMU_INT_TICK) { 1414 /* Environement or tick interrupt, query batteries */ 1415 if (pmu_battery_count) { 1416 if ((--query_batt_timer) == 0) { 1417 query_battery_state(); 1418 query_batt_timer = BATTERY_POLLING_COUNT; 1419 } 1420 } 1421 } 1422 else if ((1 << pirq) & PMU_INT_ENVIRONMENT) { 1423 if (pmu_battery_count) 1424 query_battery_state(); 1425 pmu_pass_intr(data, len); 1426 /* len == 6 is probably a bad check. But how do I 1427 * know what PMU versions send what events here? */ 1428 if (len == 6) { 1429 via_pmu_event(PMU_EVT_POWER, !!(data[1]&8)); 1430 via_pmu_event(PMU_EVT_LID, data[1]&1); 1431 } 1432 } else { 1433 pmu_pass_intr(data, len); 1434 } 1435 goto next; 1436 } 1437 1438 static struct adb_request* 1439 pmu_sr_intr(struct pt_regs *regs) 1440 { 1441 struct adb_request *req; 1442 int bite = 0; 1443 1444 if (via[B] & TREQ) { 1445 printk(KERN_ERR "PMU: spurious SR intr (%x)\n", via[B]); 1446 out_8(&via[IFR], SR_INT); 1447 return NULL; 1448 } 1449 /* The ack may not yet be low when we get the interrupt */ 1450 while ((in_8(&via[B]) & TACK) != 0) 1451 ; 1452 1453 /* if reading grab the byte, and reset the interrupt */ 1454 if (pmu_state == reading || pmu_state == reading_intr) 1455 bite = in_8(&via[SR]); 1456 1457 /* reset TREQ and wait for TACK to go high */ 1458 out_8(&via[B], in_8(&via[B]) | TREQ); 1459 wait_for_ack(); 1460 1461 switch (pmu_state) { 1462 case sending: 1463 req = current_req; 1464 if (data_len < 0) { 1465 data_len = req->nbytes - 1; 1466 send_byte(data_len); 1467 break; 1468 } 1469 if (data_index <= data_len) { 1470 send_byte(req->data[data_index++]); 1471 break; 1472 } 1473 req->sent = 1; 1474 data_len = pmu_data_len[req->data[0]][1]; 1475 if (data_len == 0) { 1476 pmu_state = idle; 1477 current_req = req->next; 1478 if (req->reply_expected) 1479 req_awaiting_reply = req; 1480 else 1481 return req; 1482 } else { 1483 pmu_state = reading; 1484 data_index = 0; 1485 reply_ptr = req->reply + req->reply_len; 1486 recv_byte(); 1487 } 1488 break; 1489 1490 case intack: 1491 data_index = 0; 1492 data_len = -1; 1493 pmu_state = reading_intr; 1494 reply_ptr = interrupt_data[int_data_last]; 1495 recv_byte(); 1496 if (gpio_irq >= 0 && !gpio_irq_enabled) { 1497 enable_irq(gpio_irq); 1498 gpio_irq_enabled = 1; 1499 } 1500 break; 1501 1502 case reading: 1503 case reading_intr: 1504 if (data_len == -1) { 1505 data_len = bite; 1506 if (bite > 32) 1507 printk(KERN_ERR "PMU: bad reply len %d\n", bite); 1508 } else if (data_index < 32) { 1509 reply_ptr[data_index++] = bite; 1510 } 1511 if (data_index < data_len) { 1512 recv_byte(); 1513 break; 1514 } 1515 1516 if (pmu_state == reading_intr) { 1517 pmu_state = idle; 1518 int_data_state[int_data_last] = int_data_ready; 1519 interrupt_data_len[int_data_last] = data_len; 1520 } else { 1521 req = current_req; 1522 /* 1523 * For PMU sleep and freq change requests, we lock the 1524 * PMU until it's explicitely unlocked. This avoids any 1525 * spurrious event polling getting in 1526 */ 1527 current_req = req->next; 1528 req->reply_len += data_index; 1529 if (req->data[0] == PMU_SLEEP || req->data[0] == PMU_CPU_SPEED) 1530 pmu_state = locked; 1531 else 1532 pmu_state = idle; 1533 return req; 1534 } 1535 break; 1536 1537 default: 1538 printk(KERN_ERR "via_pmu_interrupt: unknown state %d?\n", 1539 pmu_state); 1540 } 1541 return NULL; 1542 } 1543 1544 static irqreturn_t 1545 via_pmu_interrupt(int irq, void *arg, struct pt_regs *regs) 1546 { 1547 unsigned long flags; 1548 int intr; 1549 int nloop = 0; 1550 int int_data = -1; 1551 struct adb_request *req = NULL; 1552 int handled = 0; 1553 1554 /* This is a bit brutal, we can probably do better */ 1555 spin_lock_irqsave(&pmu_lock, flags); 1556 ++disable_poll; 1557 1558 for (;;) { 1559 intr = in_8(&via[IFR]) & (SR_INT | CB1_INT); 1560 if (intr == 0) 1561 break; 1562 handled = 1; 1563 if (++nloop > 1000) { 1564 printk(KERN_DEBUG "PMU: stuck in intr loop, " 1565 "intr=%x, ier=%x pmu_state=%d\n", 1566 intr, in_8(&via[IER]), pmu_state); 1567 break; 1568 } 1569 out_8(&via[IFR], intr); 1570 if (intr & CB1_INT) { 1571 adb_int_pending = 1; 1572 pmu_irq_stats[0]++; 1573 } 1574 if (intr & SR_INT) { 1575 req = pmu_sr_intr(regs); 1576 if (req) 1577 break; 1578 } 1579 } 1580 1581 recheck: 1582 if (pmu_state == idle) { 1583 if (adb_int_pending) { 1584 if (int_data_state[0] == int_data_empty) 1585 int_data_last = 0; 1586 else if (int_data_state[1] == int_data_empty) 1587 int_data_last = 1; 1588 else 1589 goto no_free_slot; 1590 pmu_state = intack; 1591 int_data_state[int_data_last] = int_data_fill; 1592 /* Sounds safer to make sure ACK is high before writing. 1593 * This helped kill a problem with ADB and some iBooks 1594 */ 1595 wait_for_ack(); 1596 send_byte(PMU_INT_ACK); 1597 adb_int_pending = 0; 1598 } else if (current_req) 1599 pmu_start(); 1600 } 1601 no_free_slot: 1602 /* Mark the oldest buffer for flushing */ 1603 if (int_data_state[!int_data_last] == int_data_ready) { 1604 int_data_state[!int_data_last] = int_data_flush; 1605 int_data = !int_data_last; 1606 } else if (int_data_state[int_data_last] == int_data_ready) { 1607 int_data_state[int_data_last] = int_data_flush; 1608 int_data = int_data_last; 1609 } 1610 --disable_poll; 1611 spin_unlock_irqrestore(&pmu_lock, flags); 1612 1613 /* Deal with completed PMU requests outside of the lock */ 1614 if (req) { 1615 pmu_done(req); 1616 req = NULL; 1617 } 1618 1619 /* Deal with interrupt datas outside of the lock */ 1620 if (int_data >= 0) { 1621 pmu_handle_data(interrupt_data[int_data], interrupt_data_len[int_data], regs); 1622 spin_lock_irqsave(&pmu_lock, flags); 1623 ++disable_poll; 1624 int_data_state[int_data] = int_data_empty; 1625 int_data = -1; 1626 goto recheck; 1627 } 1628 1629 return IRQ_RETVAL(handled); 1630 } 1631 1632 void 1633 pmu_unlock(void) 1634 { 1635 unsigned long flags; 1636 1637 spin_lock_irqsave(&pmu_lock, flags); 1638 if (pmu_state == locked) 1639 pmu_state = idle; 1640 adb_int_pending = 1; 1641 spin_unlock_irqrestore(&pmu_lock, flags); 1642 } 1643 1644 1645 static irqreturn_t 1646 gpio1_interrupt(int irq, void *arg, struct pt_regs *regs) 1647 { 1648 unsigned long flags; 1649 1650 if ((in_8(gpio_reg + 0x9) & 0x02) == 0) { 1651 spin_lock_irqsave(&pmu_lock, flags); 1652 if (gpio_irq_enabled > 0) { 1653 disable_irq_nosync(gpio_irq); 1654 gpio_irq_enabled = 0; 1655 } 1656 pmu_irq_stats[1]++; 1657 adb_int_pending = 1; 1658 spin_unlock_irqrestore(&pmu_lock, flags); 1659 via_pmu_interrupt(0, NULL, NULL); 1660 return IRQ_HANDLED; 1661 } 1662 return IRQ_NONE; 1663 } 1664 1665 void 1666 pmu_enable_irled(int on) 1667 { 1668 struct adb_request req; 1669 1670 if (vias == NULL) 1671 return ; 1672 if (pmu_kind == PMU_KEYLARGO_BASED) 1673 return ; 1674 1675 pmu_request(&req, NULL, 2, PMU_POWER_CTRL, PMU_POW_IRLED | 1676 (on ? PMU_POW_ON : PMU_POW_OFF)); 1677 pmu_wait_complete(&req); 1678 } 1679 1680 void 1681 pmu_restart(void) 1682 { 1683 struct adb_request req; 1684 1685 if (via == NULL) 1686 return; 1687 1688 local_irq_disable(); 1689 1690 drop_interrupts = 1; 1691 1692 if (pmu_kind != PMU_KEYLARGO_BASED) { 1693 pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, PMU_INT_ADB | 1694 PMU_INT_TICK ); 1695 while(!req.complete) 1696 pmu_poll(); 1697 } 1698 1699 pmu_request(&req, NULL, 1, PMU_RESET); 1700 pmu_wait_complete(&req); 1701 for (;;) 1702 ; 1703 } 1704 1705 void 1706 pmu_shutdown(void) 1707 { 1708 struct adb_request req; 1709 1710 if (via == NULL) 1711 return; 1712 1713 local_irq_disable(); 1714 1715 drop_interrupts = 1; 1716 1717 if (pmu_kind != PMU_KEYLARGO_BASED) { 1718 pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, PMU_INT_ADB | 1719 PMU_INT_TICK ); 1720 pmu_wait_complete(&req); 1721 } else { 1722 /* Disable server mode on shutdown or we'll just 1723 * wake up again 1724 */ 1725 pmu_set_server_mode(0); 1726 } 1727 1728 pmu_request(&req, NULL, 5, PMU_SHUTDOWN, 1729 'M', 'A', 'T', 'T'); 1730 pmu_wait_complete(&req); 1731 for (;;) 1732 ; 1733 } 1734 1735 int 1736 pmu_present(void) 1737 { 1738 return via != 0; 1739 } 1740 1741 #ifdef CONFIG_PM 1742 1743 static LIST_HEAD(sleep_notifiers); 1744 1745 int 1746 pmu_register_sleep_notifier(struct pmu_sleep_notifier *n) 1747 { 1748 struct list_head *list; 1749 struct pmu_sleep_notifier *notifier; 1750 1751 for (list = sleep_notifiers.next; list != &sleep_notifiers; 1752 list = list->next) { 1753 notifier = list_entry(list, struct pmu_sleep_notifier, list); 1754 if (n->priority > notifier->priority) 1755 break; 1756 } 1757 __list_add(&n->list, list->prev, list); 1758 return 0; 1759 } 1760 EXPORT_SYMBOL(pmu_register_sleep_notifier); 1761 1762 int 1763 pmu_unregister_sleep_notifier(struct pmu_sleep_notifier* n) 1764 { 1765 if (n->list.next == 0) 1766 return -ENOENT; 1767 list_del(&n->list); 1768 n->list.next = NULL; 1769 return 0; 1770 } 1771 EXPORT_SYMBOL(pmu_unregister_sleep_notifier); 1772 #endif /* CONFIG_PM */ 1773 1774 #if defined(CONFIG_PM) && defined(CONFIG_PPC32) 1775 1776 /* Sleep is broadcast last-to-first */ 1777 static int 1778 broadcast_sleep(int when, int fallback) 1779 { 1780 int ret = PBOOK_SLEEP_OK; 1781 struct list_head *list; 1782 struct pmu_sleep_notifier *notifier; 1783 1784 for (list = sleep_notifiers.prev; list != &sleep_notifiers; 1785 list = list->prev) { 1786 notifier = list_entry(list, struct pmu_sleep_notifier, list); 1787 ret = notifier->notifier_call(notifier, when); 1788 if (ret != PBOOK_SLEEP_OK) { 1789 printk(KERN_DEBUG "sleep %d rejected by %p (%p)\n", 1790 when, notifier, notifier->notifier_call); 1791 for (; list != &sleep_notifiers; list = list->next) { 1792 notifier = list_entry(list, struct pmu_sleep_notifier, list); 1793 notifier->notifier_call(notifier, fallback); 1794 } 1795 return ret; 1796 } 1797 } 1798 return ret; 1799 } 1800 1801 /* Wake is broadcast first-to-last */ 1802 static int 1803 broadcast_wake(void) 1804 { 1805 int ret = PBOOK_SLEEP_OK; 1806 struct list_head *list; 1807 struct pmu_sleep_notifier *notifier; 1808 1809 for (list = sleep_notifiers.next; list != &sleep_notifiers; 1810 list = list->next) { 1811 notifier = list_entry(list, struct pmu_sleep_notifier, list); 1812 notifier->notifier_call(notifier, PBOOK_WAKE); 1813 } 1814 return ret; 1815 } 1816 1817 /* 1818 * This struct is used to store config register values for 1819 * PCI devices which may get powered off when we sleep. 1820 */ 1821 static struct pci_save { 1822 #ifndef HACKED_PCI_SAVE 1823 u16 command; 1824 u16 cache_lat; 1825 u16 intr; 1826 u32 rom_address; 1827 #else 1828 u32 config[16]; 1829 #endif 1830 } *pbook_pci_saves; 1831 static int pbook_npci_saves; 1832 1833 static void 1834 pbook_alloc_pci_save(void) 1835 { 1836 int npci; 1837 struct pci_dev *pd = NULL; 1838 1839 npci = 0; 1840 while ((pd = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pd)) != NULL) { 1841 ++npci; 1842 } 1843 if (npci == 0) 1844 return; 1845 pbook_pci_saves = (struct pci_save *) 1846 kmalloc(npci * sizeof(struct pci_save), GFP_KERNEL); 1847 pbook_npci_saves = npci; 1848 } 1849 1850 static void 1851 pbook_free_pci_save(void) 1852 { 1853 if (pbook_pci_saves == NULL) 1854 return; 1855 kfree(pbook_pci_saves); 1856 pbook_pci_saves = NULL; 1857 pbook_npci_saves = 0; 1858 } 1859 1860 static void 1861 pbook_pci_save(void) 1862 { 1863 struct pci_save *ps = pbook_pci_saves; 1864 struct pci_dev *pd = NULL; 1865 int npci = pbook_npci_saves; 1866 1867 if (ps == NULL) 1868 return; 1869 1870 while ((pd = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pd)) != NULL) { 1871 if (npci-- == 0) 1872 return; 1873 #ifndef HACKED_PCI_SAVE 1874 pci_read_config_word(pd, PCI_COMMAND, &ps->command); 1875 pci_read_config_word(pd, PCI_CACHE_LINE_SIZE, &ps->cache_lat); 1876 pci_read_config_word(pd, PCI_INTERRUPT_LINE, &ps->intr); 1877 pci_read_config_dword(pd, PCI_ROM_ADDRESS, &ps->rom_address); 1878 #else 1879 int i; 1880 for (i=1;i<16;i++) 1881 pci_read_config_dword(pd, i<<4, &ps->config[i]); 1882 #endif 1883 ++ps; 1884 } 1885 } 1886 1887 /* For this to work, we must take care of a few things: If gmac was enabled 1888 * during boot, it will be in the pci dev list. If it's disabled at this point 1889 * (and it will probably be), then you can't access it's config space. 1890 */ 1891 static void 1892 pbook_pci_restore(void) 1893 { 1894 u16 cmd; 1895 struct pci_save *ps = pbook_pci_saves - 1; 1896 struct pci_dev *pd = NULL; 1897 int npci = pbook_npci_saves; 1898 int j; 1899 1900 while ((pd = pci_find_device(PCI_ANY_ID, PCI_ANY_ID, pd)) != NULL) { 1901 #ifdef HACKED_PCI_SAVE 1902 int i; 1903 if (npci-- == 0) 1904 return; 1905 ps++; 1906 for (i=2;i<16;i++) 1907 pci_write_config_dword(pd, i<<4, ps->config[i]); 1908 pci_write_config_dword(pd, 4, ps->config[1]); 1909 #else 1910 if (npci-- == 0) 1911 return; 1912 ps++; 1913 if (ps->command == 0) 1914 continue; 1915 pci_read_config_word(pd, PCI_COMMAND, &cmd); 1916 if ((ps->command & ~cmd) == 0) 1917 continue; 1918 switch (pd->hdr_type) { 1919 case PCI_HEADER_TYPE_NORMAL: 1920 for (j = 0; j < 6; ++j) 1921 pci_write_config_dword(pd, 1922 PCI_BASE_ADDRESS_0 + j*4, 1923 pd->resource[j].start); 1924 pci_write_config_dword(pd, PCI_ROM_ADDRESS, 1925 ps->rom_address); 1926 pci_write_config_word(pd, PCI_CACHE_LINE_SIZE, 1927 ps->cache_lat); 1928 pci_write_config_word(pd, PCI_INTERRUPT_LINE, 1929 ps->intr); 1930 pci_write_config_word(pd, PCI_COMMAND, ps->command); 1931 break; 1932 } 1933 #endif 1934 } 1935 } 1936 1937 #ifdef DEBUG_SLEEP 1938 /* N.B. This doesn't work on the 3400 */ 1939 void 1940 pmu_blink(int n) 1941 { 1942 struct adb_request req; 1943 1944 memset(&req, 0, sizeof(req)); 1945 1946 for (; n > 0; --n) { 1947 req.nbytes = 4; 1948 req.done = NULL; 1949 req.data[0] = 0xee; 1950 req.data[1] = 4; 1951 req.data[2] = 0; 1952 req.data[3] = 1; 1953 req.reply[0] = ADB_RET_OK; 1954 req.reply_len = 1; 1955 req.reply_expected = 0; 1956 pmu_polled_request(&req); 1957 mdelay(50); 1958 req.nbytes = 4; 1959 req.done = NULL; 1960 req.data[0] = 0xee; 1961 req.data[1] = 4; 1962 req.data[2] = 0; 1963 req.data[3] = 0; 1964 req.reply[0] = ADB_RET_OK; 1965 req.reply_len = 1; 1966 req.reply_expected = 0; 1967 pmu_polled_request(&req); 1968 mdelay(50); 1969 } 1970 mdelay(50); 1971 } 1972 #endif 1973 1974 /* 1975 * Put the powerbook to sleep. 1976 */ 1977 1978 static u32 save_via[8]; 1979 1980 static void 1981 save_via_state(void) 1982 { 1983 save_via[0] = in_8(&via[ANH]); 1984 save_via[1] = in_8(&via[DIRA]); 1985 save_via[2] = in_8(&via[B]); 1986 save_via[3] = in_8(&via[DIRB]); 1987 save_via[4] = in_8(&via[PCR]); 1988 save_via[5] = in_8(&via[ACR]); 1989 save_via[6] = in_8(&via[T1CL]); 1990 save_via[7] = in_8(&via[T1CH]); 1991 } 1992 static void 1993 restore_via_state(void) 1994 { 1995 out_8(&via[ANH], save_via[0]); 1996 out_8(&via[DIRA], save_via[1]); 1997 out_8(&via[B], save_via[2]); 1998 out_8(&via[DIRB], save_via[3]); 1999 out_8(&via[PCR], save_via[4]); 2000 out_8(&via[ACR], save_via[5]); 2001 out_8(&via[T1CL], save_via[6]); 2002 out_8(&via[T1CH], save_via[7]); 2003 out_8(&via[IER], IER_CLR | 0x7f); /* disable all intrs */ 2004 out_8(&via[IFR], 0x7f); /* clear IFR */ 2005 out_8(&via[IER], IER_SET | SR_INT | CB1_INT); 2006 } 2007 2008 static int 2009 pmac_suspend_devices(void) 2010 { 2011 int ret; 2012 2013 pm_prepare_console(); 2014 2015 /* Notify old-style device drivers & userland */ 2016 ret = broadcast_sleep(PBOOK_SLEEP_REQUEST, PBOOK_SLEEP_REJECT); 2017 if (ret != PBOOK_SLEEP_OK) { 2018 printk(KERN_ERR "Sleep rejected by drivers\n"); 2019 return -EBUSY; 2020 } 2021 2022 /* Sync the disks. */ 2023 /* XXX It would be nice to have some way to ensure that 2024 * nobody is dirtying any new buffers while we wait. That 2025 * could be achieved using the refrigerator for processes 2026 * that swsusp uses 2027 */ 2028 sys_sync(); 2029 2030 /* Sleep can fail now. May not be very robust but useful for debugging */ 2031 ret = broadcast_sleep(PBOOK_SLEEP_NOW, PBOOK_WAKE); 2032 if (ret != PBOOK_SLEEP_OK) { 2033 printk(KERN_ERR "Driver sleep failed\n"); 2034 return -EBUSY; 2035 } 2036 2037 /* Send suspend call to devices, hold the device core's dpm_sem */ 2038 ret = device_suspend(PMSG_SUSPEND); 2039 if (ret) { 2040 broadcast_wake(); 2041 printk(KERN_ERR "Driver sleep failed\n"); 2042 return -EBUSY; 2043 } 2044 2045 /* Call platform functions marked "on sleep" */ 2046 pmac_pfunc_i2c_suspend(); 2047 pmac_pfunc_base_suspend(); 2048 2049 /* Stop preemption */ 2050 preempt_disable(); 2051 2052 /* Make sure the decrementer won't interrupt us */ 2053 asm volatile("mtdec %0" : : "r" (0x7fffffff)); 2054 /* Make sure any pending DEC interrupt occurring while we did 2055 * the above didn't re-enable the DEC */ 2056 mb(); 2057 asm volatile("mtdec %0" : : "r" (0x7fffffff)); 2058 2059 /* We can now disable MSR_EE. This code of course works properly only 2060 * on UP machines... For SMP, if we ever implement sleep, we'll have to 2061 * stop the "other" CPUs way before we do all that stuff. 2062 */ 2063 local_irq_disable(); 2064 2065 /* Broadcast power down irq 2066 * This isn't that useful in most cases (only directly wired devices can 2067 * use this but still... This will take care of sysdev's as well, so 2068 * we exit from here with local irqs disabled and PIC off. 2069 */ 2070 ret = device_power_down(PMSG_SUSPEND); 2071 if (ret) { 2072 wakeup_decrementer(); 2073 local_irq_enable(); 2074 preempt_enable(); 2075 device_resume(); 2076 broadcast_wake(); 2077 printk(KERN_ERR "Driver powerdown failed\n"); 2078 return -EBUSY; 2079 } 2080 2081 /* Wait for completion of async requests */ 2082 while (!batt_req.complete) 2083 pmu_poll(); 2084 2085 /* Giveup the lazy FPU & vec so we don't have to back them 2086 * up from the low level code 2087 */ 2088 enable_kernel_fp(); 2089 2090 #ifdef CONFIG_ALTIVEC 2091 if (cpu_has_feature(CPU_FTR_ALTIVEC)) 2092 enable_kernel_altivec(); 2093 #endif /* CONFIG_ALTIVEC */ 2094 2095 return 0; 2096 } 2097 2098 static int 2099 pmac_wakeup_devices(void) 2100 { 2101 mdelay(100); 2102 2103 /* Power back up system devices (including the PIC) */ 2104 device_power_up(); 2105 2106 /* Force a poll of ADB interrupts */ 2107 adb_int_pending = 1; 2108 via_pmu_interrupt(0, NULL, NULL); 2109 2110 /* Restart jiffies & scheduling */ 2111 wakeup_decrementer(); 2112 2113 /* Re-enable local CPU interrupts */ 2114 local_irq_enable(); 2115 mdelay(10); 2116 preempt_enable(); 2117 2118 /* Call platform functions marked "on wake" */ 2119 pmac_pfunc_base_resume(); 2120 pmac_pfunc_i2c_resume(); 2121 2122 /* Resume devices */ 2123 device_resume(); 2124 2125 /* Notify old style drivers */ 2126 broadcast_wake(); 2127 2128 pm_restore_console(); 2129 2130 return 0; 2131 } 2132 2133 #define GRACKLE_PM (1<<7) 2134 #define GRACKLE_DOZE (1<<5) 2135 #define GRACKLE_NAP (1<<4) 2136 #define GRACKLE_SLEEP (1<<3) 2137 2138 static int powerbook_sleep_grackle(void) 2139 { 2140 unsigned long save_l2cr; 2141 unsigned short pmcr1; 2142 struct adb_request req; 2143 int ret; 2144 struct pci_dev *grackle; 2145 2146 grackle = pci_find_slot(0, 0); 2147 if (!grackle) 2148 return -ENODEV; 2149 2150 ret = pmac_suspend_devices(); 2151 if (ret) { 2152 printk(KERN_ERR "Sleep rejected by devices\n"); 2153 return ret; 2154 } 2155 2156 /* Turn off various things. Darwin does some retry tests here... */ 2157 pmu_request(&req, NULL, 2, PMU_POWER_CTRL0, PMU_POW0_OFF|PMU_POW0_HARD_DRIVE); 2158 pmu_wait_complete(&req); 2159 pmu_request(&req, NULL, 2, PMU_POWER_CTRL, 2160 PMU_POW_OFF|PMU_POW_BACKLIGHT|PMU_POW_IRLED|PMU_POW_MEDIABAY); 2161 pmu_wait_complete(&req); 2162 2163 /* For 750, save backside cache setting and disable it */ 2164 save_l2cr = _get_L2CR(); /* (returns -1 if not available) */ 2165 2166 if (!__fake_sleep) { 2167 /* Ask the PMU to put us to sleep */ 2168 pmu_request(&req, NULL, 5, PMU_SLEEP, 'M', 'A', 'T', 'T'); 2169 pmu_wait_complete(&req); 2170 } 2171 2172 /* The VIA is supposed not to be restored correctly*/ 2173 save_via_state(); 2174 /* We shut down some HW */ 2175 pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,1); 2176 2177 pci_read_config_word(grackle, 0x70, &pmcr1); 2178 /* Apparently, MacOS uses NAP mode for Grackle ??? */ 2179 pmcr1 &= ~(GRACKLE_DOZE|GRACKLE_SLEEP); 2180 pmcr1 |= GRACKLE_PM|GRACKLE_NAP; 2181 pci_write_config_word(grackle, 0x70, pmcr1); 2182 2183 /* Call low-level ASM sleep handler */ 2184 if (__fake_sleep) 2185 mdelay(5000); 2186 else 2187 low_sleep_handler(); 2188 2189 /* We're awake again, stop grackle PM */ 2190 pci_read_config_word(grackle, 0x70, &pmcr1); 2191 pmcr1 &= ~(GRACKLE_PM|GRACKLE_DOZE|GRACKLE_SLEEP|GRACKLE_NAP); 2192 pci_write_config_word(grackle, 0x70, pmcr1); 2193 2194 /* Make sure the PMU is idle */ 2195 pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,0); 2196 restore_via_state(); 2197 2198 /* Restore L2 cache */ 2199 if (save_l2cr != 0xffffffff && (save_l2cr & L2CR_L2E) != 0) 2200 _set_L2CR(save_l2cr); 2201 2202 /* Restore userland MMU context */ 2203 set_context(current->active_mm->context.id, current->active_mm->pgd); 2204 2205 /* Power things up */ 2206 pmu_unlock(); 2207 pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask); 2208 pmu_wait_complete(&req); 2209 pmu_request(&req, NULL, 2, PMU_POWER_CTRL0, 2210 PMU_POW0_ON|PMU_POW0_HARD_DRIVE); 2211 pmu_wait_complete(&req); 2212 pmu_request(&req, NULL, 2, PMU_POWER_CTRL, 2213 PMU_POW_ON|PMU_POW_BACKLIGHT|PMU_POW_CHARGER|PMU_POW_IRLED|PMU_POW_MEDIABAY); 2214 pmu_wait_complete(&req); 2215 2216 pmac_wakeup_devices(); 2217 2218 return 0; 2219 } 2220 2221 static int 2222 powerbook_sleep_Core99(void) 2223 { 2224 unsigned long save_l2cr; 2225 unsigned long save_l3cr; 2226 struct adb_request req; 2227 int ret; 2228 2229 if (pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) < 0) { 2230 printk(KERN_ERR "Sleep mode not supported on this machine\n"); 2231 return -ENOSYS; 2232 } 2233 2234 if (num_online_cpus() > 1 || cpu_is_offline(0)) 2235 return -EAGAIN; 2236 2237 ret = pmac_suspend_devices(); 2238 if (ret) { 2239 printk(KERN_ERR "Sleep rejected by devices\n"); 2240 return ret; 2241 } 2242 2243 /* Stop environment and ADB interrupts */ 2244 pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, 0); 2245 pmu_wait_complete(&req); 2246 2247 /* Tell PMU what events will wake us up */ 2248 pmu_request(&req, NULL, 4, PMU_POWER_EVENTS, PMU_PWR_CLR_WAKEUP_EVENTS, 2249 0xff, 0xff); 2250 pmu_wait_complete(&req); 2251 pmu_request(&req, NULL, 4, PMU_POWER_EVENTS, PMU_PWR_SET_WAKEUP_EVENTS, 2252 0, PMU_PWR_WAKEUP_KEY | 2253 (option_lid_wakeup ? PMU_PWR_WAKEUP_LID_OPEN : 0)); 2254 pmu_wait_complete(&req); 2255 2256 /* Save the state of the L2 and L3 caches */ 2257 save_l3cr = _get_L3CR(); /* (returns -1 if not available) */ 2258 save_l2cr = _get_L2CR(); /* (returns -1 if not available) */ 2259 2260 if (!__fake_sleep) { 2261 /* Ask the PMU to put us to sleep */ 2262 pmu_request(&req, NULL, 5, PMU_SLEEP, 'M', 'A', 'T', 'T'); 2263 pmu_wait_complete(&req); 2264 } 2265 2266 /* The VIA is supposed not to be restored correctly*/ 2267 save_via_state(); 2268 2269 /* Shut down various ASICs. There's a chance that we can no longer 2270 * talk to the PMU after this, so I moved it to _after_ sending the 2271 * sleep command to it. Still need to be checked. 2272 */ 2273 pmac_call_feature(PMAC_FTR_SLEEP_STATE, NULL, 0, 1); 2274 2275 /* Call low-level ASM sleep handler */ 2276 if (__fake_sleep) 2277 mdelay(5000); 2278 else 2279 low_sleep_handler(); 2280 2281 /* Restore Apple core ASICs state */ 2282 pmac_call_feature(PMAC_FTR_SLEEP_STATE, NULL, 0, 0); 2283 2284 /* Restore VIA */ 2285 restore_via_state(); 2286 2287 /* tweak LPJ before cpufreq is there */ 2288 loops_per_jiffy *= 2; 2289 2290 /* Restore video */ 2291 pmac_call_early_video_resume(); 2292 2293 /* Restore L2 cache */ 2294 if (save_l2cr != 0xffffffff && (save_l2cr & L2CR_L2E) != 0) 2295 _set_L2CR(save_l2cr); 2296 /* Restore L3 cache */ 2297 if (save_l3cr != 0xffffffff && (save_l3cr & L3CR_L3E) != 0) 2298 _set_L3CR(save_l3cr); 2299 2300 /* Restore userland MMU context */ 2301 set_context(current->active_mm->context.id, current->active_mm->pgd); 2302 2303 /* Tell PMU we are ready */ 2304 pmu_unlock(); 2305 pmu_request(&req, NULL, 2, PMU_SYSTEM_READY, 2); 2306 pmu_wait_complete(&req); 2307 pmu_request(&req, NULL, 2, PMU_SET_INTR_MASK, pmu_intr_mask); 2308 pmu_wait_complete(&req); 2309 2310 /* Restore LPJ, cpufreq will adjust the cpu frequency */ 2311 loops_per_jiffy /= 2; 2312 2313 pmac_wakeup_devices(); 2314 2315 return 0; 2316 } 2317 2318 #define PB3400_MEM_CTRL 0xf8000000 2319 #define PB3400_MEM_CTRL_SLEEP 0x70 2320 2321 static int 2322 powerbook_sleep_3400(void) 2323 { 2324 int ret, i, x; 2325 unsigned int hid0; 2326 unsigned long p; 2327 struct adb_request sleep_req; 2328 void __iomem *mem_ctrl; 2329 unsigned int __iomem *mem_ctrl_sleep; 2330 2331 /* first map in the memory controller registers */ 2332 mem_ctrl = ioremap(PB3400_MEM_CTRL, 0x100); 2333 if (mem_ctrl == NULL) { 2334 printk("powerbook_sleep_3400: ioremap failed\n"); 2335 return -ENOMEM; 2336 } 2337 mem_ctrl_sleep = mem_ctrl + PB3400_MEM_CTRL_SLEEP; 2338 2339 /* Allocate room for PCI save */ 2340 pbook_alloc_pci_save(); 2341 2342 ret = pmac_suspend_devices(); 2343 if (ret) { 2344 pbook_free_pci_save(); 2345 printk(KERN_ERR "Sleep rejected by devices\n"); 2346 return ret; 2347 } 2348 2349 /* Save the state of PCI config space for some slots */ 2350 pbook_pci_save(); 2351 2352 /* Set the memory controller to keep the memory refreshed 2353 while we're asleep */ 2354 for (i = 0x403f; i >= 0x4000; --i) { 2355 out_be32(mem_ctrl_sleep, i); 2356 do { 2357 x = (in_be32(mem_ctrl_sleep) >> 16) & 0x3ff; 2358 } while (x == 0); 2359 if (x >= 0x100) 2360 break; 2361 } 2362 2363 /* Ask the PMU to put us to sleep */ 2364 pmu_request(&sleep_req, NULL, 5, PMU_SLEEP, 'M', 'A', 'T', 'T'); 2365 while (!sleep_req.complete) 2366 mb(); 2367 2368 pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,1); 2369 2370 /* displacement-flush the L2 cache - necessary? */ 2371 for (p = KERNELBASE; p < KERNELBASE + 0x100000; p += 0x1000) 2372 i = *(volatile int *)p; 2373 asleep = 1; 2374 2375 /* Put the CPU into sleep mode */ 2376 hid0 = mfspr(SPRN_HID0); 2377 hid0 = (hid0 & ~(HID0_NAP | HID0_DOZE)) | HID0_SLEEP; 2378 mtspr(SPRN_HID0, hid0); 2379 mtmsr(mfmsr() | MSR_POW | MSR_EE); 2380 udelay(10); 2381 2382 /* OK, we're awake again, start restoring things */ 2383 out_be32(mem_ctrl_sleep, 0x3f); 2384 pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,0); 2385 pbook_pci_restore(); 2386 pmu_unlock(); 2387 2388 /* wait for the PMU interrupt sequence to complete */ 2389 while (asleep) 2390 mb(); 2391 2392 pmac_wakeup_devices(); 2393 pbook_free_pci_save(); 2394 iounmap(mem_ctrl); 2395 2396 return 0; 2397 } 2398 2399 #endif /* CONFIG_PM && CONFIG_PPC32 */ 2400 2401 /* 2402 * Support for /dev/pmu device 2403 */ 2404 #define RB_SIZE 0x10 2405 struct pmu_private { 2406 struct list_head list; 2407 int rb_get; 2408 int rb_put; 2409 struct rb_entry { 2410 unsigned short len; 2411 unsigned char data[16]; 2412 } rb_buf[RB_SIZE]; 2413 wait_queue_head_t wait; 2414 spinlock_t lock; 2415 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) 2416 int backlight_locker; 2417 #endif /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */ 2418 }; 2419 2420 static LIST_HEAD(all_pmu_pvt); 2421 static DEFINE_SPINLOCK(all_pvt_lock); 2422 2423 static void 2424 pmu_pass_intr(unsigned char *data, int len) 2425 { 2426 struct pmu_private *pp; 2427 struct list_head *list; 2428 int i; 2429 unsigned long flags; 2430 2431 if (len > sizeof(pp->rb_buf[0].data)) 2432 len = sizeof(pp->rb_buf[0].data); 2433 spin_lock_irqsave(&all_pvt_lock, flags); 2434 for (list = &all_pmu_pvt; (list = list->next) != &all_pmu_pvt; ) { 2435 pp = list_entry(list, struct pmu_private, list); 2436 spin_lock(&pp->lock); 2437 i = pp->rb_put + 1; 2438 if (i >= RB_SIZE) 2439 i = 0; 2440 if (i != pp->rb_get) { 2441 struct rb_entry *rp = &pp->rb_buf[pp->rb_put]; 2442 rp->len = len; 2443 memcpy(rp->data, data, len); 2444 pp->rb_put = i; 2445 wake_up_interruptible(&pp->wait); 2446 } 2447 spin_unlock(&pp->lock); 2448 } 2449 spin_unlock_irqrestore(&all_pvt_lock, flags); 2450 } 2451 2452 static int 2453 pmu_open(struct inode *inode, struct file *file) 2454 { 2455 struct pmu_private *pp; 2456 unsigned long flags; 2457 2458 pp = kmalloc(sizeof(struct pmu_private), GFP_KERNEL); 2459 if (pp == 0) 2460 return -ENOMEM; 2461 pp->rb_get = pp->rb_put = 0; 2462 spin_lock_init(&pp->lock); 2463 init_waitqueue_head(&pp->wait); 2464 spin_lock_irqsave(&all_pvt_lock, flags); 2465 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) 2466 pp->backlight_locker = 0; 2467 #endif /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */ 2468 list_add(&pp->list, &all_pmu_pvt); 2469 spin_unlock_irqrestore(&all_pvt_lock, flags); 2470 file->private_data = pp; 2471 return 0; 2472 } 2473 2474 static ssize_t 2475 pmu_read(struct file *file, char __user *buf, 2476 size_t count, loff_t *ppos) 2477 { 2478 struct pmu_private *pp = file->private_data; 2479 DECLARE_WAITQUEUE(wait, current); 2480 unsigned long flags; 2481 int ret = 0; 2482 2483 if (count < 1 || pp == 0) 2484 return -EINVAL; 2485 if (!access_ok(VERIFY_WRITE, buf, count)) 2486 return -EFAULT; 2487 2488 spin_lock_irqsave(&pp->lock, flags); 2489 add_wait_queue(&pp->wait, &wait); 2490 current->state = TASK_INTERRUPTIBLE; 2491 2492 for (;;) { 2493 ret = -EAGAIN; 2494 if (pp->rb_get != pp->rb_put) { 2495 int i = pp->rb_get; 2496 struct rb_entry *rp = &pp->rb_buf[i]; 2497 ret = rp->len; 2498 spin_unlock_irqrestore(&pp->lock, flags); 2499 if (ret > count) 2500 ret = count; 2501 if (ret > 0 && copy_to_user(buf, rp->data, ret)) 2502 ret = -EFAULT; 2503 if (++i >= RB_SIZE) 2504 i = 0; 2505 spin_lock_irqsave(&pp->lock, flags); 2506 pp->rb_get = i; 2507 } 2508 if (ret >= 0) 2509 break; 2510 if (file->f_flags & O_NONBLOCK) 2511 break; 2512 ret = -ERESTARTSYS; 2513 if (signal_pending(current)) 2514 break; 2515 spin_unlock_irqrestore(&pp->lock, flags); 2516 schedule(); 2517 spin_lock_irqsave(&pp->lock, flags); 2518 } 2519 current->state = TASK_RUNNING; 2520 remove_wait_queue(&pp->wait, &wait); 2521 spin_unlock_irqrestore(&pp->lock, flags); 2522 2523 return ret; 2524 } 2525 2526 static ssize_t 2527 pmu_write(struct file *file, const char __user *buf, 2528 size_t count, loff_t *ppos) 2529 { 2530 return 0; 2531 } 2532 2533 static unsigned int 2534 pmu_fpoll(struct file *filp, poll_table *wait) 2535 { 2536 struct pmu_private *pp = filp->private_data; 2537 unsigned int mask = 0; 2538 unsigned long flags; 2539 2540 if (pp == 0) 2541 return 0; 2542 poll_wait(filp, &pp->wait, wait); 2543 spin_lock_irqsave(&pp->lock, flags); 2544 if (pp->rb_get != pp->rb_put) 2545 mask |= POLLIN; 2546 spin_unlock_irqrestore(&pp->lock, flags); 2547 return mask; 2548 } 2549 2550 static int 2551 pmu_release(struct inode *inode, struct file *file) 2552 { 2553 struct pmu_private *pp = file->private_data; 2554 unsigned long flags; 2555 2556 lock_kernel(); 2557 if (pp != 0) { 2558 file->private_data = NULL; 2559 spin_lock_irqsave(&all_pvt_lock, flags); 2560 list_del(&pp->list); 2561 spin_unlock_irqrestore(&all_pvt_lock, flags); 2562 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) 2563 if (pp->backlight_locker) { 2564 spin_lock_irqsave(&pmu_lock, flags); 2565 disable_kernel_backlight--; 2566 spin_unlock_irqrestore(&pmu_lock, flags); 2567 } 2568 #endif /* defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT) */ 2569 kfree(pp); 2570 } 2571 unlock_kernel(); 2572 return 0; 2573 } 2574 2575 static int 2576 pmu_ioctl(struct inode * inode, struct file *filp, 2577 u_int cmd, u_long arg) 2578 { 2579 __u32 __user *argp = (__u32 __user *)arg; 2580 int error = -EINVAL; 2581 2582 switch (cmd) { 2583 #if defined(CONFIG_PM) && defined(CONFIG_PPC32) 2584 case PMU_IOC_SLEEP: 2585 if (!capable(CAP_SYS_ADMIN)) 2586 return -EACCES; 2587 if (sleep_in_progress) 2588 return -EBUSY; 2589 sleep_in_progress = 1; 2590 switch (pmu_kind) { 2591 case PMU_OHARE_BASED: 2592 error = powerbook_sleep_3400(); 2593 break; 2594 case PMU_HEATHROW_BASED: 2595 case PMU_PADDINGTON_BASED: 2596 error = powerbook_sleep_grackle(); 2597 break; 2598 case PMU_KEYLARGO_BASED: 2599 error = powerbook_sleep_Core99(); 2600 break; 2601 default: 2602 error = -ENOSYS; 2603 } 2604 sleep_in_progress = 0; 2605 break; 2606 case PMU_IOC_CAN_SLEEP: 2607 if (pmac_call_feature(PMAC_FTR_SLEEP_STATE,NULL,0,-1) < 0) 2608 return put_user(0, argp); 2609 else 2610 return put_user(1, argp); 2611 #endif /* CONFIG_PM && CONFIG_PPC32 */ 2612 2613 #ifdef CONFIG_PMAC_BACKLIGHT_LEGACY 2614 /* Compatibility ioctl's for backlight */ 2615 case PMU_IOC_GET_BACKLIGHT: 2616 { 2617 int brightness; 2618 2619 if (sleep_in_progress) 2620 return -EBUSY; 2621 2622 brightness = pmac_backlight_get_legacy_brightness(); 2623 if (brightness < 0) 2624 return brightness; 2625 else 2626 return put_user(brightness, argp); 2627 2628 } 2629 case PMU_IOC_SET_BACKLIGHT: 2630 { 2631 int brightness; 2632 2633 if (sleep_in_progress) 2634 return -EBUSY; 2635 2636 error = get_user(brightness, argp); 2637 if (error) 2638 return error; 2639 2640 return pmac_backlight_set_legacy_brightness(brightness); 2641 } 2642 #ifdef CONFIG_INPUT_ADBHID 2643 case PMU_IOC_GRAB_BACKLIGHT: { 2644 struct pmu_private *pp = filp->private_data; 2645 unsigned long flags; 2646 2647 if (pp->backlight_locker) 2648 return 0; 2649 pp->backlight_locker = 1; 2650 spin_lock_irqsave(&pmu_lock, flags); 2651 disable_kernel_backlight++; 2652 spin_unlock_irqrestore(&pmu_lock, flags); 2653 return 0; 2654 } 2655 #endif /* CONFIG_INPUT_ADBHID */ 2656 #endif /* CONFIG_PMAC_BACKLIGHT_LEGACY */ 2657 case PMU_IOC_GET_MODEL: 2658 return put_user(pmu_kind, argp); 2659 case PMU_IOC_HAS_ADB: 2660 return put_user(pmu_has_adb, argp); 2661 } 2662 return error; 2663 } 2664 2665 static struct file_operations pmu_device_fops = { 2666 .read = pmu_read, 2667 .write = pmu_write, 2668 .poll = pmu_fpoll, 2669 .ioctl = pmu_ioctl, 2670 .open = pmu_open, 2671 .release = pmu_release, 2672 }; 2673 2674 static struct miscdevice pmu_device = { 2675 PMU_MINOR, "pmu", &pmu_device_fops 2676 }; 2677 2678 static int pmu_device_init(void) 2679 { 2680 if (!via) 2681 return 0; 2682 if (misc_register(&pmu_device) < 0) 2683 printk(KERN_ERR "via-pmu: cannot register misc device.\n"); 2684 return 0; 2685 } 2686 device_initcall(pmu_device_init); 2687 2688 2689 #ifdef DEBUG_SLEEP 2690 static inline void 2691 polled_handshake(volatile unsigned char __iomem *via) 2692 { 2693 via[B] &= ~TREQ; eieio(); 2694 while ((via[B] & TACK) != 0) 2695 ; 2696 via[B] |= TREQ; eieio(); 2697 while ((via[B] & TACK) == 0) 2698 ; 2699 } 2700 2701 static inline void 2702 polled_send_byte(volatile unsigned char __iomem *via, int x) 2703 { 2704 via[ACR] |= SR_OUT | SR_EXT; eieio(); 2705 via[SR] = x; eieio(); 2706 polled_handshake(via); 2707 } 2708 2709 static inline int 2710 polled_recv_byte(volatile unsigned char __iomem *via) 2711 { 2712 int x; 2713 2714 via[ACR] = (via[ACR] & ~SR_OUT) | SR_EXT; eieio(); 2715 x = via[SR]; eieio(); 2716 polled_handshake(via); 2717 x = via[SR]; eieio(); 2718 return x; 2719 } 2720 2721 int 2722 pmu_polled_request(struct adb_request *req) 2723 { 2724 unsigned long flags; 2725 int i, l, c; 2726 volatile unsigned char __iomem *v = via; 2727 2728 req->complete = 1; 2729 c = req->data[0]; 2730 l = pmu_data_len[c][0]; 2731 if (l >= 0 && req->nbytes != l + 1) 2732 return -EINVAL; 2733 2734 local_irq_save(flags); 2735 while (pmu_state != idle) 2736 pmu_poll(); 2737 2738 while ((via[B] & TACK) == 0) 2739 ; 2740 polled_send_byte(v, c); 2741 if (l < 0) { 2742 l = req->nbytes - 1; 2743 polled_send_byte(v, l); 2744 } 2745 for (i = 1; i <= l; ++i) 2746 polled_send_byte(v, req->data[i]); 2747 2748 l = pmu_data_len[c][1]; 2749 if (l < 0) 2750 l = polled_recv_byte(v); 2751 for (i = 0; i < l; ++i) 2752 req->reply[i + req->reply_len] = polled_recv_byte(v); 2753 2754 if (req->done) 2755 (*req->done)(req); 2756 2757 local_irq_restore(flags); 2758 return 0; 2759 } 2760 #endif /* DEBUG_SLEEP */ 2761 2762 2763 /* FIXME: This is a temporary set of callbacks to enable us 2764 * to do suspend-to-disk. 2765 */ 2766 2767 #if defined(CONFIG_PM) && defined(CONFIG_PPC32) 2768 2769 static int pmu_sys_suspended = 0; 2770 2771 static int pmu_sys_suspend(struct sys_device *sysdev, pm_message_t state) 2772 { 2773 if (state.event != PM_EVENT_SUSPEND || pmu_sys_suspended) 2774 return 0; 2775 2776 /* Suspend PMU event interrupts */ 2777 pmu_suspend(); 2778 2779 pmu_sys_suspended = 1; 2780 return 0; 2781 } 2782 2783 static int pmu_sys_resume(struct sys_device *sysdev) 2784 { 2785 struct adb_request req; 2786 2787 if (!pmu_sys_suspended) 2788 return 0; 2789 2790 /* Tell PMU we are ready */ 2791 pmu_request(&req, NULL, 2, PMU_SYSTEM_READY, 2); 2792 pmu_wait_complete(&req); 2793 2794 /* Resume PMU event interrupts */ 2795 pmu_resume(); 2796 2797 pmu_sys_suspended = 0; 2798 2799 return 0; 2800 } 2801 2802 #endif /* CONFIG_PM && CONFIG_PPC32 */ 2803 2804 static struct sysdev_class pmu_sysclass = { 2805 set_kset_name("pmu"), 2806 }; 2807 2808 static struct sys_device device_pmu = { 2809 .id = 0, 2810 .cls = &pmu_sysclass, 2811 }; 2812 2813 static struct sysdev_driver driver_pmu = { 2814 #if defined(CONFIG_PM) && defined(CONFIG_PPC32) 2815 .suspend = &pmu_sys_suspend, 2816 .resume = &pmu_sys_resume, 2817 #endif /* CONFIG_PM && CONFIG_PPC32 */ 2818 }; 2819 2820 static int __init init_pmu_sysfs(void) 2821 { 2822 int rc; 2823 2824 rc = sysdev_class_register(&pmu_sysclass); 2825 if (rc) { 2826 printk(KERN_ERR "Failed registering PMU sys class\n"); 2827 return -ENODEV; 2828 } 2829 rc = sysdev_register(&device_pmu); 2830 if (rc) { 2831 printk(KERN_ERR "Failed registering PMU sys device\n"); 2832 return -ENODEV; 2833 } 2834 rc = sysdev_driver_register(&pmu_sysclass, &driver_pmu); 2835 if (rc) { 2836 printk(KERN_ERR "Failed registering PMU sys driver\n"); 2837 return -ENODEV; 2838 } 2839 return 0; 2840 } 2841 2842 subsys_initcall(init_pmu_sysfs); 2843 2844 EXPORT_SYMBOL(pmu_request); 2845 EXPORT_SYMBOL(pmu_queue_request); 2846 EXPORT_SYMBOL(pmu_poll); 2847 EXPORT_SYMBOL(pmu_poll_adb); 2848 EXPORT_SYMBOL(pmu_wait_complete); 2849 EXPORT_SYMBOL(pmu_suspend); 2850 EXPORT_SYMBOL(pmu_resume); 2851 EXPORT_SYMBOL(pmu_unlock); 2852 #if defined(CONFIG_PM) && defined(CONFIG_PPC32) 2853 EXPORT_SYMBOL(pmu_enable_irled); 2854 EXPORT_SYMBOL(pmu_battery_count); 2855 EXPORT_SYMBOL(pmu_batteries); 2856 EXPORT_SYMBOL(pmu_power_flags); 2857 #endif /* CONFIG_PM && CONFIG_PPC32 */ 2858 2859