diff options
Diffstat (limited to 'usr/src/uts/i86pc/io/cpu_acpi.c')
| -rw-r--r-- | usr/src/uts/i86pc/io/cpu_acpi.c | 519 |
1 files changed, 0 insertions, 519 deletions
diff --git a/usr/src/uts/i86pc/io/cpu_acpi.c b/usr/src/uts/i86pc/io/cpu_acpi.c deleted file mode 100644 index 11fe37561f..0000000000 --- a/usr/src/uts/i86pc/io/cpu_acpi.c +++ /dev/null @@ -1,519 +0,0 @@ -/* - * CDDL HEADER START - * - * The contents of this file are subject to the terms of the - * Common Development and Distribution License (the "License"). - * You may not use this file except in compliance with the License. - * - * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE - * or http://www.opensolaris.org/os/licensing. - * See the License for the specific language governing permissions - * and limitations under the License. - * - * When distributing Covered Code, include this CDDL HEADER in each - * file and include the License file at usr/src/OPENSOLARIS.LICENSE. - * If applicable, add the following below this CDDL HEADER, with the - * fields enclosed by brackets "[]" replaced with your own identifying - * information: Portions Copyright [yyyy] [name of copyright owner] - * - * CDDL HEADER END - */ -/* - * Copyright 2008 Sun Microsystems, Inc. All rights reserved. - * Use is subject to license terms. - */ - -#pragma ident "%Z%%M% %I% %E% SMI" - -#include <sys/cpu_acpi.h> - -#define CPU_ACPI_PSTATES_SIZE(cnt) (cnt * sizeof (cpu_acpi_pstate_t)) -#define CPU_ACPI_PSS_SIZE (sizeof (cpu_acpi_pstate_t) / sizeof (uint32_t)) - -/* - * Map the dip to an ACPI handle for the device. - */ -cpu_acpi_handle_t -cpu_acpi_init(dev_info_t *dip) -{ - cpu_acpi_handle_t handle; - - handle = kmem_zalloc(sizeof (cpu_acpi_state_t), KM_SLEEP); - - if (ACPI_FAILURE(acpica_get_handle(dip, &handle->cs_handle))) { - kmem_free(handle, sizeof (cpu_acpi_state_t)); - return (NULL); - } - handle->cs_dip = dip; - return (handle); -} - -/* - * Free any resources. - */ -void -cpu_acpi_fini(cpu_acpi_handle_t handle) -{ - if (handle->cs_pstates != NULL) { - if (CPU_ACPI_PSTATES(handle) != NULL) - kmem_free(CPU_ACPI_PSTATES(handle), - CPU_ACPI_PSTATES_SIZE( - CPU_ACPI_PSTATES_COUNT(handle))); - kmem_free(handle->cs_pstates, sizeof (cpu_acpi_pstates_t)); - } - kmem_free(handle, sizeof (cpu_acpi_state_t)); -} - -/* - * Cache the ACPI _PCT data. The _PCT data defines the interface to use - * when making power level transitions (i.e., system IO ports, fixed - * hardware port, etc). - */ -int -cpu_acpi_cache_pct(cpu_acpi_handle_t handle) -{ - ACPI_BUFFER abuf; - ACPI_OBJECT *obj; - AML_RESOURCE_GENERIC_REGISTER *greg; - cpu_acpi_pct_t *pct; - int ret = -1; - int i; - - /* - * Fetch the _PCT (if present) for the CPU node. Since the PCT is - * optional, non-existence is not a failure (we just consider - * it a fixed hardware case). - */ - CPU_ACPI_OBJ_IS_NOT_CACHED(handle, CPU_ACPI_PCT_CACHED); - abuf.Length = ACPI_ALLOCATE_BUFFER; - abuf.Pointer = NULL; - if (ACPI_FAILURE(AcpiEvaluateObjectTyped(handle->cs_handle, "_PCT", - NULL, &abuf, ACPI_TYPE_PACKAGE))) { - CPU_ACPI_PCT(handle)[0].pc_addrspace_id = - ACPI_ADR_SPACE_FIXED_HARDWARE; - CPU_ACPI_PCT(handle)[1].pc_addrspace_id = - ACPI_ADR_SPACE_FIXED_HARDWARE; - return (1); - } - - obj = abuf.Pointer; - if (obj->Package.Count != 2) { - cmn_err(CE_NOTE, "!cpu_acpi: _PCT package bad count %d.", - obj->Package.Count); - goto out; - } - - /* - * Does the package look coherent? - */ - for (i = 0; i < obj->Package.Count; i++) { - if (obj->Package.Elements[i].Type != ACPI_TYPE_BUFFER) { - cmn_err(CE_NOTE, "!cpu_acpi: " - "Unexpected data in _PCT package."); - goto out; - } - - greg = (AML_RESOURCE_GENERIC_REGISTER *) - obj->Package.Elements[i].Buffer.Pointer; - if (greg->DescriptorType != - ACPI_RESOURCE_NAME_GENERIC_REGISTER) { - cmn_err(CE_NOTE, "!cpu_acpi: " - "_PCT package has format error."); - goto out; - } - if (greg->ResourceLength != - ACPI_AML_SIZE_LARGE(AML_RESOURCE_GENERIC_REGISTER)) { - cmn_err(CE_NOTE, "!cpu_acpi: " - "_PCT package not right size."); - goto out; - } - if (greg->AddressSpaceId != ACPI_ADR_SPACE_FIXED_HARDWARE && - greg->AddressSpaceId != ACPI_ADR_SPACE_SYSTEM_IO) { - cmn_err(CE_NOTE, "!cpu_apci: _PCT contains unsupported " - "address space type %x", greg->AddressSpaceId); - goto out; - } - } - - /* - * Looks good! - */ - for (i = 0; i < obj->Package.Count; i++) { - greg = (AML_RESOURCE_GENERIC_REGISTER *) - obj->Package.Elements[i].Buffer.Pointer; - pct = &CPU_ACPI_PCT(handle)[i]; - pct->pc_addrspace_id = greg->AddressSpaceId; - pct->pc_width = greg->BitWidth; - pct->pc_offset = greg->BitOffset; - pct->pc_asize = greg->AccessSize; - pct->pc_address = greg->Address; - } - CPU_ACPI_OBJ_IS_CACHED(handle, CPU_ACPI_PCT_CACHED); - ret = 0; -out: - AcpiOsFree(abuf.Pointer); - return (ret); -} - -/* - * Cache the ACPI _PSD data. The _PSD data defines CPU dependencies - * (think CPU domains). - */ -int -cpu_acpi_cache_psd(cpu_acpi_handle_t handle) -{ - ACPI_BUFFER abuf; - ACPI_OBJECT *pkg, *elements; - cpu_acpi_psd_t *psd; - int ret = -1; - - /* - * Fetch the _PSD (if present) for the CPU node. Since the PSD is - * optional, non-existence is not a failure (it's up to the caller - * to determine how to handle non-existence). - */ - CPU_ACPI_OBJ_IS_NOT_CACHED(handle, CPU_ACPI_PSD_CACHED); - abuf.Length = ACPI_ALLOCATE_BUFFER; - abuf.Pointer = NULL; - if (ACPI_FAILURE(AcpiEvaluateObjectTyped(handle->cs_handle, "_PSD", - NULL, &abuf, ACPI_TYPE_PACKAGE))) { - return (1); - } - - pkg = abuf.Pointer; - if (pkg->Package.Count != 1) { - cmn_err(CE_NOTE, "!cpu_acpi: _PSD unsupported package " - "count %d.", pkg->Package.Count); - goto out; - } - - if (pkg->Package.Elements[0].Type != ACPI_TYPE_PACKAGE || - pkg->Package.Elements[0].Package.Count != 5) { - cmn_err(CE_NOTE, "!cpu_acpi: Unexpected data in _PSD package."); - goto out; - } - elements = pkg->Package.Elements[0].Package.Elements; - if (elements[0].Integer.Value != 5 || elements[1].Integer.Value != 0) { - cmn_err(CE_NOTE, "!cpu_acpi: Unexpected _PSD revision."); - goto out; - } - psd = &CPU_ACPI_PSD(handle); - - psd->pd_entries = elements[0].Integer.Value; - psd->pd_revision = elements[1].Integer.Value; - psd->pd_domain = elements[2].Integer.Value; - psd->pd_type = elements[3].Integer.Value; - psd->pd_num = elements[4].Integer.Value; - CPU_ACPI_OBJ_IS_CACHED(handle, CPU_ACPI_PSD_CACHED); - ret = 0; -out: - AcpiOsFree(abuf.Pointer); - return (ret); -} - -/* - * Cache the _PSS data. The _PSS data defines the different power levels - * supported by the CPU and the attributes associated with each power level - * (i.e., frequency, voltage, etc.). The power levels are number from - * highest to lowest. That is, the highest power level is _PSS entry 0 - * and the lowest power level is the last _PSS entry. - */ -int -cpu_acpi_cache_pstates(cpu_acpi_handle_t handle) -{ - ACPI_BUFFER abuf; - ACPI_OBJECT *obj, *q, *l; - cpu_acpi_pstate_t *pstate; - boolean_t eot = B_FALSE; - int ret = -1; - int cnt; - int i, j; - - /* - * Fetch the _PSS (if present) for the CPU node. If there isn't - * one, then CPU power management will not be possible. - */ - CPU_ACPI_OBJ_IS_NOT_CACHED(handle, CPU_ACPI_PSS_CACHED); - abuf.Length = ACPI_ALLOCATE_BUFFER; - abuf.Pointer = NULL; - if (ACPI_FAILURE(AcpiEvaluateObjectTyped(handle->cs_handle, "_PSS", - NULL, &abuf, ACPI_TYPE_PACKAGE))) { - cmn_err(CE_NOTE, "!cpu_acpi: _PSS package not found."); - return (1); - } - obj = abuf.Pointer; - if (obj->Package.Count < 2) { - cmn_err(CE_NOTE, "!cpu_acpi: _PSS package bad count %d.", - obj->Package.Count); - goto out; - } - - /* - * Does the package look coherent? - */ - cnt = 0; - for (i = 0, l = NULL; i < obj->Package.Count; i++, l = q) { - if (obj->Package.Elements[i].Type != ACPI_TYPE_PACKAGE || - obj->Package.Elements[i].Package.Count != - CPU_ACPI_PSS_SIZE) { - cmn_err(CE_NOTE, "!cpu_acpi: " - "Unexpected data in _PSS package."); - goto out; - } - - q = obj->Package.Elements[i].Package.Elements; - for (j = 0; j < CPU_ACPI_PSS_SIZE; j++) { - if (q[j].Type != ACPI_TYPE_INTEGER) { - cmn_err(CE_NOTE, "!cpu_acpi: " - "_PSS element invalid (type)"); - goto out; - } - } - - /* - * Ignore duplicate entries. - */ - if (l != NULL && l[0].Integer.Value == q[0].Integer.Value) - continue; - - /* - * Some _PSS tables are larger than required - * and unused elements are filled with patterns - * of 0xff. Simply check here for frequency = 0xffff - * and stop counting if found. - */ - if (q[0].Integer.Value == 0xffff) { - eot = B_TRUE; - continue; - } - - /* - * We should never find a valid entry after we've hit - * an end-of-table entry. - */ - if (eot) { - cmn_err(CE_NOTE, "!cpu_acpi: " - "Unexpected data in _PSS package after eot."); - goto out; - } - - /* - * pstates must be defined in order from highest to lowest. - */ - if (l != NULL && l[0].Integer.Value < q[0].Integer.Value) { - cmn_err(CE_NOTE, "!cpu_acpi: " - "_PSS package pstate definitions out of order."); - goto out; - } - - /* - * This entry passes. - */ - cnt++; - } - if (cnt == 0) - goto out; - - /* - * Yes, fill in pstate structure. - */ - handle->cs_pstates = kmem_zalloc(sizeof (cpu_acpi_pstates_t), KM_SLEEP); - CPU_ACPI_PSTATES_COUNT(handle) = cnt; - CPU_ACPI_PSTATES(handle) = kmem_zalloc(CPU_ACPI_PSTATES_SIZE(cnt), - KM_SLEEP); - pstate = CPU_ACPI_PSTATES(handle); - for (i = 0, l = NULL; i < obj->Package.Count && cnt > 0; i++, l = q) { - uint32_t *up; - - q = obj->Package.Elements[i].Package.Elements; - - /* - * Skip duplicate entries. - */ - if (l != NULL && l[0].Integer.Value == q[0].Integer.Value) - continue; - - up = (uint32_t *)pstate; - for (j = 0; j < CPU_ACPI_PSS_SIZE; j++) - up[j] = q[j].Integer.Value; - pstate++; - cnt--; - } - CPU_ACPI_OBJ_IS_CACHED(handle, CPU_ACPI_PSS_CACHED); - ret = 0; -out: - AcpiOsFree(abuf.Pointer); - return (ret); -} - -/* - * Cache the _PPC data. The _PPC simply contains an integer value which - * represents the highest power level that a CPU should transition to. - * That is, it's an index into the array of _PSS entries and will be - * greater than or equal to zero. - */ -void -cpu_acpi_cache_ppc(cpu_acpi_handle_t handle) -{ - ACPI_BUFFER abuf; - ACPI_OBJECT *obj; - - /* - * Fetch the _PPC (if present) for the CPU node. Since the PPC is - * optional (I think), non-existence is not a failure. - */ - CPU_ACPI_OBJ_IS_NOT_CACHED(handle, CPU_ACPI_PPC_CACHED); - abuf.Length = ACPI_ALLOCATE_BUFFER; - abuf.Pointer = NULL; - if (ACPI_FAILURE(AcpiEvaluateObject(handle->cs_handle, "_PPC", - NULL, &abuf))) { - CPU_ACPI_PPC(handle) = 0; - return; - } - - obj = (ACPI_OBJECT *)abuf.Pointer; - CPU_ACPI_PPC(handle) = obj->Integer.Value; - CPU_ACPI_OBJ_IS_CACHED(handle, CPU_ACPI_PPC_CACHED); - AcpiOsFree(abuf.Pointer); -} - -/* - * Cache the _PCT, _PSS, _PSD and _PPC data. - */ -int -cpu_acpi_cache_data(cpu_acpi_handle_t handle) -{ - if (cpu_acpi_cache_pct(handle) < 0) { - cmn_err(CE_WARN, "!cpu_acpi: error parsing _PCT for " - "CPU instance %d", ddi_get_instance(handle->cs_dip)); - return (-1); - } - - if (cpu_acpi_cache_pstates(handle) != 0) { - cmn_err(CE_WARN, "!cpu_acpi: error parsing _PSS for " - "CPU instance %d", ddi_get_instance(handle->cs_dip)); - return (-1); - } - - if (cpu_acpi_cache_psd(handle) < 0) { - cmn_err(CE_WARN, "!cpu_acpi: error parsing _PSD for " - "CPU instance %d", ddi_get_instance(handle->cs_dip)); - return (-1); - } - - cpu_acpi_cache_ppc(handle); - - return (0); -} - -/* - * Register a handler for _PPC change notifications. The _PPC - * change notification is the means by which _P - */ -void -cpu_acpi_install_ppc_handler(cpu_acpi_handle_t handle, - ACPI_NOTIFY_HANDLER handler, dev_info_t *dip) -{ - char path[MAXNAMELEN]; - if (ACPI_FAILURE(AcpiInstallNotifyHandler(handle->cs_handle, - ACPI_DEVICE_NOTIFY, handler, dip))) - cmn_err(CE_NOTE, "!cpu_acpi: Unable to register _PPC " - "notify handler for %s", ddi_pathname(dip, path)); -} - -/* - * Write _PDC. - */ -int -cpu_acpi_write_pdc(cpu_acpi_handle_t handle, uint32_t revision, uint32_t count, - uint32_t *capabilities) -{ - ACPI_OBJECT obj; - ACPI_OBJECT_LIST list = { 1, &obj}; - uint32_t *buffer; - uint32_t *bufptr; - uint32_t bufsize; - int i; - - bufsize = (count + 2) * sizeof (uint32_t); - buffer = kmem_zalloc(bufsize, KM_SLEEP); - buffer[0] = revision; - buffer[1] = count; - bufptr = &buffer[2]; - for (i = 0; i < count; i++) - *bufptr++ = *capabilities++; - - obj.Type = ACPI_TYPE_BUFFER; - obj.Buffer.Length = bufsize; - obj.Buffer.Pointer = (void *)buffer; - - /* - * _PDC is optional, so don't log failure. - */ - if (ACPI_FAILURE(AcpiEvaluateObject(handle->cs_handle, "_PDC", - &list, NULL))) { - kmem_free(buffer, bufsize); - return (-1); - } - - kmem_free(buffer, bufsize); - return (0); -} - -/* - * Write to system IO port. - */ -int -cpu_acpi_write_port(ACPI_IO_ADDRESS address, uint32_t value, uint32_t width) -{ - if (ACPI_FAILURE(AcpiOsWritePort(address, value, width))) { - cmn_err(CE_NOTE, "cpu_acpi: error writing system IO port " - "%lx.", (long)address); - return (-1); - } - return (0); -} - -/* - * Read from a system IO port. - */ -int -cpu_acpi_read_port(ACPI_IO_ADDRESS address, uint32_t *value, uint32_t width) -{ - if (ACPI_FAILURE(AcpiOsReadPort(address, value, width))) { - cmn_err(CE_NOTE, "cpu_acpi: error reading system IO port " - "%lx.", (long)address); - return (-1); - } - return (0); -} - -/* - * Return supported frequencies. - */ -uint_t -cpu_acpi_get_speeds(cpu_acpi_handle_t handle, int **speeds) -{ - cpu_acpi_pstate_t *pstate; - int *hspeeds; - uint_t nspeeds; - int i; - - nspeeds = CPU_ACPI_PSTATES_COUNT(handle); - hspeeds = kmem_zalloc(nspeeds * sizeof (int), KM_SLEEP); - for (i = 0; i < nspeeds; i++) { - pstate = CPU_ACPI_PSTATE(handle, i); - hspeeds[i] = CPU_ACPI_FREQ(pstate); - } - *speeds = hspeeds; - return (nspeeds); -} - -/* - * Free resources allocated by cpu_acpi_get_speeds(). - */ -void -cpu_acpi_free_speeds(int *speeds, uint_t nspeeds) -{ - kmem_free(speeds, nspeeds * sizeof (int)); -} |