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https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git
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ACPICA: Allow ACPI id to be u32 instead of u8.
Allow ACPI id to be u32 instead of u8. Requires drop of conversion tables with the acpiid as index. Signed-off-by: Len Brown <[email protected]>
This commit is contained in:
Alexey Starikovskiy
Len Brown
parent
5008740e27
commit
f18c5a08bf
6 changed files with 128 additions and 65 deletions
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@ -375,30 +375,126 @@ static int acpi_processor_remove_fs(struct acpi_device *device)
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}
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/* Use the acpiid in MADT to map cpus in case of SMP */
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#ifndef CONFIG_SMP
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#define convert_acpiid_to_cpu(acpi_id) (-1)
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#else
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static struct acpi_table_madt *madt;
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static int map_lapic_id(struct acpi_subtable_header *entry,
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u32 acpi_id, int *apic_id)
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{
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struct acpi_madt_local_apic *lapic =
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(struct acpi_madt_local_apic *)entry;
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if ((lapic->lapic_flags & ACPI_MADT_ENABLED) &&
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lapic->processor_id == acpi_id) {
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*apic_id = lapic->id;
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return 1;
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}
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return 0;
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}
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static int map_lsapic_id(struct acpi_subtable_header *entry,
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u32 acpi_id, int *apic_id)
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{
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struct acpi_madt_local_sapic *lsapic =
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(struct acpi_madt_local_sapic *)entry;
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/* Only check enabled APICs*/
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if (lsapic->lapic_flags & ACPI_MADT_ENABLED) {
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/* First check against id */
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if (lsapic->processor_id == acpi_id) {
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*apic_id = lsapic->id;
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return 1;
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/* Check against optional uid */
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} else if (entry->length >= 16 &&
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lsapic->uid == acpi_id) {
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*apic_id = lsapic->uid;
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return 1;
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}
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}
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return 0;
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}
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#ifdef CONFIG_IA64
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#define arch_acpiid_to_apicid ia64_acpiid_to_sapicid
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#define arch_cpu_to_apicid ia64_cpu_to_sapicid
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#define ARCH_BAD_APICID (0xffff)
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#else
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#define arch_acpiid_to_apicid x86_acpiid_to_apicid
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#define arch_cpu_to_apicid x86_cpu_to_apicid
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#define ARCH_BAD_APICID (0xff)
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#endif
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static int convert_acpiid_to_cpu(u8 acpi_id)
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static int map_madt_entry(u32 acpi_id)
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{
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unsigned long madt_end, entry;
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int apic_id = -1;
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if (!madt)
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return apic_id;
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entry = (unsigned long)madt;
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madt_end = entry + madt->header.length;
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/* Parse all entries looking for a match. */
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entry += sizeof(struct acpi_table_madt);
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while (entry + sizeof(struct acpi_subtable_header) < madt_end) {
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struct acpi_subtable_header *header =
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(struct acpi_subtable_header *)entry;
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if (header->type == ACPI_MADT_TYPE_LOCAL_APIC) {
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if (map_lapic_id(header, acpi_id, &apic_id))
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break;
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} else if (header->type == ACPI_MADT_TYPE_LOCAL_SAPIC) {
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if (map_lsapic_id(header, acpi_id, &apic_id))
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break;
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}
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entry += header->length;
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}
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return apic_id;
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}
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static int map_mat_entry(acpi_handle handle, u32 acpi_id)
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{
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struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
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union acpi_object *obj;
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struct acpi_subtable_header *header;
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int apic_id = -1;
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if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
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goto exit;
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if (!buffer.length || !buffer.pointer)
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goto exit;
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obj = buffer.pointer;
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if (obj->type != ACPI_TYPE_BUFFER ||
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obj->buffer.length < sizeof(struct acpi_subtable_header)) {
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goto exit;
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}
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header = (struct acpi_subtable_header *)obj->buffer.pointer;
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if (header->type == ACPI_MADT_TYPE_LOCAL_APIC) {
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map_lapic_id(header, acpi_id, &apic_id);
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} else if (header->type == ACPI_MADT_TYPE_LOCAL_SAPIC) {
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map_lsapic_id(header, acpi_id, &apic_id);
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}
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exit:
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if (buffer.pointer)
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kfree(buffer.pointer);
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return apic_id;
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}
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static int get_apic_id(acpi_handle handle, u32 acpi_id)
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{
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u16 apic_id;
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int i;
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int apic_id = -1;
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apic_id = arch_acpiid_to_apicid[acpi_id];
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if (apic_id == ARCH_BAD_APICID)
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return -1;
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apic_id = map_mat_entry(handle, acpi_id);
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if (apic_id == -1)
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apic_id = map_madt_entry(acpi_id);
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if (apic_id == -1)
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return apic_id;
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for (i = 0; i < NR_CPUS; i++) {
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for (i = 0; i < NR_CPUS; ++i) {
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if (arch_cpu_to_apicid[i] == apic_id)
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return i;
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}
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@ -456,7 +552,7 @@ static int acpi_processor_get_info(struct acpi_processor *pr)
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*/
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pr->acpi_id = object.processor.proc_id;
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cpu_index = convert_acpiid_to_cpu(pr->acpi_id);
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cpu_index = get_apic_id(pr->handle, pr->acpi_id);
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/* Handle UP system running SMP kernel, with no LAPIC in MADT */
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if (!cpu0_initialized && (cpu_index == -1) &&
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@ -473,7 +569,7 @@ static int acpi_processor_get_info(struct acpi_processor *pr)
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* less than the max # of CPUs. They should be ignored _iff
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* they are physically not present.
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*/
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if (cpu_index == -1) {
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if (pr->id == -1) {
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if (ACPI_FAILURE
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(acpi_processor_hotadd_init(pr->handle, &pr->id))) {
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return -ENODEV;
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@ -895,6 +991,12 @@ static int __init acpi_processor_init(void)
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memset(&processors, 0, sizeof(processors));
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memset(&errata, 0, sizeof(errata));
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#ifdef CONFIG_SMP
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if (ACPI_FAILURE(acpi_get_table(ACPI_SIG_MADT, 0,
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(struct acpi_table_header **)&madt)))
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madt = 0;
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#endif
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acpi_processor_dir = proc_mkdir(ACPI_PROCESSOR_CLASS, acpi_root_dir);
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if (!acpi_processor_dir)
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return -ENOMEM;
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