X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/0c530ab8987f0ae6a1a3d9284f40182b88852816..d26ffc64f583ab2d29df48f13518685602bc8832:/osfmk/i386/hpet.c?ds=sidebyside diff --git a/osfmk/i386/hpet.c b/osfmk/i386/hpet.c index c6eec35ab..f8fd9832d 100644 --- a/osfmk/i386/hpet.c +++ b/osfmk/i386/hpet.c @@ -1,23 +1,29 @@ /* * Copyright (c) 2005-2006 Apple Computer, Inc. All rights reserved. * - * @APPLE_LICENSE_HEADER_START@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * - * The contents of this file constitute Original Code as defined in and - * are subject to the Apple Public Source License Version 1.1 (the - * "License"). You may not use this file except in compliance with the - * License. Please obtain a copy of the License at - * http://www.apple.com/publicsource and read it before using this file. + * This file contains Original Code and/or Modifications of Original Code + * as defined in and that are subject to the Apple Public Source License + * Version 2.0 (the 'License'). You may not use this file except in + * compliance with the License. The rights granted to you under the License + * may not be used to create, or enable the creation or redistribution of, + * unlawful or unlicensed copies of an Apple operating system, or to + * circumvent, violate, or enable the circumvention or violation of, any + * terms of an Apple operating system software license agreement. * - * This Original Code and all software distributed under the License are - * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER + * Please obtain a copy of the License at + * http://www.opensource.apple.com/apsl/ and read it before using this file. + * + * The Original Code and all software distributed under the License are + * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the - * License for the specific language governing rights and limitations - * under the License. + * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. + * Please see the License for the specific language governing rights and + * limitations under the License. * - * @APPLE_LICENSE_HEADER_END@ + * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ #include @@ -36,12 +42,12 @@ #include #include #include -#include -#include #include -#include #include +#include #include +#include +#include #include #include #include @@ -49,17 +55,9 @@ #include #include #include +#include +#include #include -#if MACH_KDB -#include -#include -#include -#include -#include -#include -#include -#endif /* MACH_KDB */ -#include /* Decimal powers: */ #define kilo (1000ULL) @@ -68,7 +66,7 @@ #define Tera (kilo * Giga) #define Peta (kilo * Tera) -uint32_t hpetArea = 0; +vm_offset_t hpetArea = 0; uint32_t hpetAreap = 0; uint64_t hpetFemto = 0; uint64_t hpetFreq = 0; @@ -80,15 +78,111 @@ uint64_t hpet2tsc = 0; uint64_t bus2hpet = 0; uint64_t hpet2bus = 0; -uint32_t rcbaArea = 0; +vm_offset_t rcbaArea = 0; uint32_t rcbaAreap = 0; +static int (*hpet_req)(uint32_t apicid, void *arg, hpetRequest_t *hpet) = NULL; +static void *hpet_arg = NULL; + #if DEBUG #define DBG(x...) kprintf("DBG: " x) #else #define DBG(x...) #endif +int +hpet_register_callback(int (*hpet_reqst)(uint32_t apicid, + void *arg, + hpetRequest_t *hpet), + void *arg) +{ + hpet_req = hpet_reqst; + hpet_arg = arg; + return(0); +} + +/* + * This routine is called to obtain an HPET and have it assigned + * to a CPU. It returns 0 if successful and non-zero if one could + * not be assigned. + */ +int +hpet_request(uint32_t cpu) +{ + hpetRequest_t hpetReq; + int rc; + x86_lcpu_t *lcpu; + x86_core_t *core; + x86_pkg_t *pkg; + boolean_t enabled; + + if (hpet_req == NULL) { + return(-1); + } + + /* + * Deal with the case where the CPU # passed in is past the + * value specified in cpus=n in boot-args. + */ + if (cpu >= real_ncpus) { + enabled = ml_set_interrupts_enabled(FALSE); + lcpu = cpu_to_lcpu(cpu); + if (lcpu != NULL) { + core = lcpu->core; + pkg = core->package; + + if (lcpu->primary) { + pkg->flags |= X86PKG_FL_HAS_HPET; + } + } + + ml_set_interrupts_enabled(enabled); + return(0); + } + + rc = (*hpet_req)(ml_get_apicid(cpu), hpet_arg, &hpetReq); + if (rc != 0) { + return(rc); + } + + enabled = ml_set_interrupts_enabled(FALSE); + lcpu = cpu_to_lcpu(cpu); + core = lcpu->core; + pkg = core->package; + + /* + * Compute the address of the HPET. + */ + core->Hpet = (hpetTimer_t *)((uint8_t *)hpetArea + hpetReq.hpetOffset); + core->HpetVec = hpetReq.hpetVector; + + /* + * Enable interrupts + */ + core->Hpet->Config |= Tn_INT_ENB_CNF; + + /* + * Save the configuration + */ + core->HpetCfg = core->Hpet->Config; + core->HpetCmp = 0; + + /* + * If the CPU is the "primary" for the package, then + * add the HPET to the package too. + */ + if (lcpu->primary) { + pkg->Hpet = core->Hpet; + pkg->HpetCfg = core->HpetCfg; + pkg->HpetCmp = core->HpetCmp; + pkg->flags |= X86PKG_FL_HAS_HPET; + } + + ml_set_interrupts_enabled(enabled); + + return(0); +} + /* * Map the RCBA area. */ @@ -101,7 +195,7 @@ map_rcbaArea(void) outl(cfgAdr, lpcCfg | (0xF0 & 0xFC)); rcbaAreap = inl(cfgDat | (0xF0 & 0x03)); rcbaArea = io_map_spec(rcbaAreap & -4096, PAGE_SIZE * 4, VM_WIMG_IO); - kprintf("RCBA: vaddr = %08X, paddr = %08X\n", rcbaArea, rcbaAreap); + kprintf("RCBA: vaddr = %lX, paddr = %08X\n", (unsigned long)rcbaArea, rcbaAreap); } /* @@ -111,8 +205,6 @@ void hpet_init(void) { unsigned int *xmod; - uint64_t now; - uint64_t initialHPET; map_rcbaArea(); @@ -134,7 +226,7 @@ hpet_init(void) */ hpetAreap = hpetAddr | ((hptc & 3) << 12); hpetArea = io_map_spec(hpetAreap & -4096, PAGE_SIZE * 4, VM_WIMG_IO); - kprintf("HPET: vaddr = %08X, paddr = %08X\n", hpetArea, hpetAreap); + kprintf("HPET: vaddr = %lX, paddr = %08X\n", (unsigned long)hpetArea, hpetAreap); /* * Extract the HPET tick rate. @@ -194,28 +286,6 @@ hpet_init(void) hpet2bus = tmrCvt(hpetCvtt2n, busFCvtn2t); DBG(" CVT: HPET to BUS = %08X.%08X\n", (uint32_t)(hpet2bus >> 32), (uint32_t)hpet2bus); - - /* Make sure the counter is off in the HPET configuration flags */ - uint64_t hpetcon = ((hpetReg_t *)hpetArea)->GEN_CONF; - hpetcon = hpetcon & ~1; - ((hpetReg_t *)hpetArea)->GEN_CONF = hpetcon; - - /* - * Convert current TSC to HPET value, - * set it, and start it ticking. - */ - now = mach_absolute_time(); - initialHPET = tmrCvt(now, hpetCvtn2t); - ((hpetReg_t *)hpetArea)->MAIN_CNT = initialHPET; - hpetcon = hpetcon | 1; - ((hpetReg_t *)hpetArea)->GEN_CONF = hpetcon; - kprintf("HPET started: now = %08X.%08X, HPET = %08X.%08X\n", - (uint32_t)(now >> 32), (uint32_t)now, - (uint32_t)(initialHPET >> 32), (uint32_t)initialHPET); - -#if MACH_KDB - db_display_hpet((hpetReg_t *)hpetArea); /* (BRINGUP) */ -#endif } /* @@ -232,63 +302,99 @@ hpet_get_info(hpetInfo_t *info) info->hpet2tsc = hpet2tsc; info->bus2hpet = bus2hpet; info->hpet2bus = hpet2bus; - info->rcbaArea = rcbaArea; - info->rcbaAreap = rcbaAreap; + /* + * XXX + * We're repurposing the rcbaArea so we can use the HPET. + * Eventually we'll rename this correctly. + */ + info->rcbaArea = hpetArea; + info->rcbaAreap = hpetAreap; } /* * This routine is called by the HPET driver - * when it assigns an HPET timer to a processor + * when it assigns an HPET timer to a processor. + * + * XXX with the new callback into the HPET driver, + * this routine will be deprecated. */ - void ml_hpet_cfg(uint32_t cpu, uint32_t hpetVect) { - uint64_t *hpetVaddr; - uint64_t hpetcnf; + uint64_t *hpetVaddr; + hpetTimer_t *hpet; + x86_lcpu_t *lcpu; + x86_core_t *core; + x86_pkg_t *pkg; + boolean_t enabled; if(cpu > 1) { panic("ml_hpet_cfg: invalid cpu = %d\n", cpu); } + lcpu = cpu_to_lcpu(cpu); + core = lcpu->core; + pkg = core->package; + + /* + * Only deal with the primary CPU for the package. + */ + if (!lcpu->primary) + return; + + enabled = ml_set_interrupts_enabled(FALSE); + /* Calculate address of the HPET for this processor */ - hpetVaddr = (uint64_t *)(((uint32_t)&(((hpetReg_t *)hpetArea)->TIM1_CONF)) + (cpu << 5)); + hpetVaddr = (uint64_t *)(((uintptr_t)&(((hpetReg_t *)hpetArea)->TIM1_CONF)) + (cpu << 5)); + hpet = (hpetTimer_t *)hpetVaddr; - DBG("ml_hpet_cfg: HPET for cpu %d at %08X, vector = %d\n", + DBG("ml_hpet_cfg: HPET for cpu %d at %p, vector = %d\n", cpu, hpetVaddr, hpetVect); - + /* Save the address and vector of the HPET for this processor */ - cpu_data_ptr[cpu]->cpu_pmHpet = (uint64_t *)hpetVaddr; - cpu_data_ptr[cpu]->cpu_pmHpetVec = hpetVect; + core->Hpet = hpet; + core->HpetVec = hpetVect; - /* Enable the interruptions now that we have a vector */ - hpetcnf = *hpetVaddr; - hpetcnf = hpetcnf | Tn_INT_ENB_CNF; - *hpetVaddr = hpetcnf; + /* + * Enable interrupts + */ + core->Hpet->Config |= Tn_INT_ENB_CNF; /* Save the configuration */ - cpu_data_ptr[cpu]->cpu_pmStats.pmHpetCfg = hpetcnf; - cpu_data_ptr[cpu]->cpu_pmStats.pmHpetCmp = 0; + core->HpetCfg = core->Hpet->Config; + core->HpetCmp = 0; - /* See if nap policy has changed now */ - machine_nap_policy(); + /* + * We're only doing this for the primary CPU, so go + * ahead and add the HPET to the package too. + */ + pkg->Hpet = core->Hpet; + pkg->HpetVec = core->HpetVec; + pkg->HpetCfg = core->HpetCfg; + pkg->HpetCmp = core->HpetCmp; + pkg->flags |= X86PKG_FL_HAS_HPET; + ml_set_interrupts_enabled(enabled); } /* * This is the HPET interrupt handler. * - * We really don't want to be here, but so far, I haven't figured out - * a way to cancel the interrupt. Hopefully, some day we will figure out - * how to do that or switch all timers to the HPET. + * It just hands off to the power management code so that the + * appropriate things get done there. */ int HPETInterrupt(void) { /* All we do here is to bump the count */ - current_cpu_datap()->cpu_pmStats.pmHPETRupt++; + x86_package()->HpetInt++; + + /* + * Let power management do it's thing. + */ + pmHPETInterrupt(); /* Return and show that the 'rupt has been handled... */ return 1; @@ -297,7 +403,8 @@ HPETInterrupt(void) static hpetReg_t saved_hpet; -void hpet_save( void ) +void +hpet_save(void) { hpetReg_t *from = (hpetReg_t *) hpetArea; hpetReg_t *to = &saved_hpet; @@ -312,7 +419,8 @@ void hpet_save( void ) to->MAIN_CNT = from->MAIN_CNT; } -void hpet_restore( void ) +void +hpet_restore(void) { hpetReg_t *from = &saved_hpet; hpetReg_t *to = (hpetReg_t *) hpetArea; @@ -338,7 +446,7 @@ void hpet_restore( void ) to->TIM2_CONF = from->TIM2_CONF; to->TIM2_COMP = from->TIM2_COMP; to->GINTR_STA = -1ULL; - to->MAIN_CNT = tmrCvt(mach_absolute_time(), hpetCvtn2t); + to->MAIN_CNT = from->MAIN_CNT; to->GEN_CONF = from->GEN_CONF; } @@ -362,69 +470,3 @@ rdHPET(void) return (((uint64_t) high) << 32) | low; } - -#if MACH_KDB - -#define HI32(x) ((uint32_t)(((x) >> 32) & 0xFFFFFFFF)) -#define LO32(x) ((uint32_t)((x) & 0xFFFFFFFF)) - -/* - * Displays HPET memory mapped area - * hp - */ -void -db_hpet(__unused db_expr_t addr, __unused int have_addr, __unused db_expr_t count, __unused char *modif) -{ - - db_display_hpet((hpetReg_t *) hpetArea); /* Dump out the HPET - * stuff */ - return; -} - -void -db_display_hpet(hpetReg_t * hpt) -{ - - uint64_t cmain; - - cmain = hpt->MAIN_CNT; /* Get the main timer */ - - /* General capabilities */ - db_printf(" GCAP_ID = %08X.%08X\n", - HI32(hpt->GCAP_ID), LO32(hpt->GCAP_ID)); - /* General configuration */ - db_printf(" GEN_CONF = %08X.%08X\n", - HI32(hpt->GEN_CONF), LO32(hpt->GEN_CONF)); - /* General Interrupt status */ - db_printf("GINTR_STA = %08X.%08X\n", - HI32(hpt->GINTR_STA), LO32(hpt->GINTR_STA)); - /* Main counter */ - db_printf(" MAIN_CNT = %08X.%08X\n", - HI32(cmain), LO32(cmain)); - /* Timer 0 config and cap */ - db_printf("TIM0_CONF = %08X.%08X\n", - HI32(hpt->TIM0_CONF), LO32(hpt->TIM0_CONF)); - /* Timer 0 comparator */ - db_printf("TIM0_COMP = %08X.%08X\n", - HI32(hpt->TIM0_COMP), LO32(hpt->TIM0_COMP)); - /* Timer 1 config and cap */ - db_printf("TIM0_CONF = %08X.%08X\n", - HI32(hpt->TIM1_CONF), LO32(hpt->TIM1_CONF)); - /* Timer 1 comparator */ - db_printf("TIM1_COMP = %08X.%08X\n", - HI32(hpt->TIM1_COMP), LO32(hpt->TIM1_COMP)); - /* Timer 2 config and cap */ - db_printf("TIM2_CONF = %08X.%08X\n", - HI32(hpt->TIM2_CONF), LO32(hpt->TIM2_CONF)); - /* Timer 2 comparator */ - db_printf("TIM2_COMP = %08X.%08X\n", - HI32(hpt->TIM2_COMP), LO32(hpt->TIM2_COMP)); - - db_printf("\nHPET Frequency = %d.%05dMHz\n", - (uint32_t) (hpetFreq / 1000000), (uint32_t) (hpetFreq % 1000000)); - - return; - -} - -#endif