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Commit f18c5a08 authored by Alexey Starikovskiy's avatar Alexey Starikovskiy Committed by Len Brown
Browse files

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: default avatarLen Brown <len.brown@intel.com>
parent 5008740e

arch/i386/kernel/acpi/boot.c

+0 −17
Original line number Diff line number Diff line
@@ -92,11 +92,6 @@ static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE; 
#warning ACPI uses CMPXCHG, i486 and later hardware

#endif



#define MAX_MADT_ENTRIES	256

u8 x86_acpiid_to_apicid[MAX_MADT_ENTRIES] =

    {[0 ... MAX_MADT_ENTRIES - 1] = 0xff };

EXPORT_SYMBOL(x86_acpiid_to_apicid);



/* --------------------------------------------------------------------------

                              Boot-time Configuration

   -------------------------------------------------------------------------- */
@@ -253,10 +248,6 @@ acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end) 


	acpi_table_print_madt_entry(header);



	/* Record local apic id only when enabled */

	if (processor->lapic_flags & ACPI_MADT_ENABLED)

		x86_acpiid_to_apicid[processor->processor_id] = processor->id;



	/*

	 * We need to register disabled CPU as well to permit

	 * counting disabled CPUs. This allows us to size
@@ -563,14 +554,6 @@ EXPORT_SYMBOL(acpi_map_lsapic); 


int acpi_unmap_lsapic(int cpu)

{

	int i;



	for_each_possible_cpu(i) {

		if (x86_acpiid_to_apicid[i] == x86_cpu_to_apicid[cpu]) {

			x86_acpiid_to_apicid[i] = -1;

			break;

		}

	}

	x86_cpu_to_apicid[cpu] = -1;

	cpu_clear(cpu, cpu_present_map);

	num_processors--;

arch/ia64/kernel/acpi.c

+0 −16
Original line number Diff line number Diff line
@@ -67,11 +67,6 @@ EXPORT_SYMBOL(pm_power_off); 
unsigned int acpi_cpei_override;

unsigned int acpi_cpei_phys_cpuid;



#define MAX_SAPICS 256

u16 ia64_acpiid_to_sapicid[MAX_SAPICS] = {[0 ... MAX_SAPICS - 1] = -1 };



EXPORT_SYMBOL(ia64_acpiid_to_sapicid);



const char *acpi_get_sysname(void)

{

#ifdef CONFIG_IA64_GENERIC
@@ -200,8 +195,6 @@ acpi_parse_lsapic(struct acpi_subtable_header * header, const unsigned long end) 
		smp_boot_data.cpu_phys_id[available_cpus] =

		    (lsapic->id << 8) | lsapic->eid;

#endif

		ia64_acpiid_to_sapicid[lsapic->processor_id] =

		    (lsapic->id << 8) | lsapic->eid;

		++available_cpus;

	}
@@ -880,7 +873,6 @@ int acpi_map_lsapic(acpi_handle handle, int *pcpu) 


	cpu_set(cpu, cpu_present_map);

	ia64_cpu_to_sapicid[cpu] = physid;

	ia64_acpiid_to_sapicid[lsapic->processor_id] = ia64_cpu_to_sapicid[cpu];



	*pcpu = cpu;

	return (0);
@@ -890,14 +882,6 @@ EXPORT_SYMBOL(acpi_map_lsapic); 


int acpi_unmap_lsapic(int cpu)

{

	int i;



	for (i = 0; i < MAX_SAPICS; i++) {

		if (ia64_acpiid_to_sapicid[i] == ia64_cpu_to_sapicid[cpu]) {

			ia64_acpiid_to_sapicid[i] = -1;

			break;

		}

	}

	ia64_cpu_to_sapicid[cpu] = -1;

	cpu_clear(cpu, cpu_present_map);

drivers/acpi/processor_core.c

+114 −12
Original line number Diff line number Diff line
@@ -375,30 +375,126 @@ static int acpi_processor_remove_fs(struct acpi_device *device) 
}



/* Use the acpiid in MADT to map cpus in case of SMP */



#ifndef CONFIG_SMP

#define convert_acpiid_to_cpu(acpi_id) (-1)

#else



static struct acpi_table_madt *madt;



static int map_lapic_id(struct acpi_subtable_header *entry,

		 u32 acpi_id, int *apic_id)

{

	struct acpi_madt_local_apic *lapic =

		(struct acpi_madt_local_apic *)entry;

	if ((lapic->lapic_flags & ACPI_MADT_ENABLED) &&

	    lapic->processor_id == acpi_id) {

		*apic_id = lapic->id;

		return 1;

	}

	return 0;

}



static int map_lsapic_id(struct acpi_subtable_header *entry,

		  u32 acpi_id, int *apic_id)

{

	struct acpi_madt_local_sapic *lsapic =

		(struct acpi_madt_local_sapic *)entry;

	/* Only check enabled APICs*/

	if (lsapic->lapic_flags & ACPI_MADT_ENABLED) {

		/* First check against id */

		if (lsapic->processor_id == acpi_id) {

			*apic_id = lsapic->id;

			return 1;

		/* Check against optional uid */

		} else if (entry->length >= 16 &&

			lsapic->uid == acpi_id) {

			*apic_id = lsapic->uid;

			return 1;

		}

	}

	return 0;

}



#ifdef CONFIG_IA64

#define arch_acpiid_to_apicid 	ia64_acpiid_to_sapicid

#define arch_cpu_to_apicid 	ia64_cpu_to_sapicid

#define ARCH_BAD_APICID		(0xffff)

#else

#define arch_acpiid_to_apicid 	x86_acpiid_to_apicid

#define arch_cpu_to_apicid 	x86_cpu_to_apicid

#define ARCH_BAD_APICID		(0xff)

#endif



static int convert_acpiid_to_cpu(u8 acpi_id)

static int map_madt_entry(u32 acpi_id)

{

	unsigned long madt_end, entry;

	int apic_id = -1;



	if (!madt)

		return apic_id;



	entry = (unsigned long)madt;

	madt_end = entry + madt->header.length;



	/* Parse all entries looking for a match. */



	entry += sizeof(struct acpi_table_madt);

	while (entry + sizeof(struct acpi_subtable_header) < madt_end) {

		struct acpi_subtable_header *header =

			(struct acpi_subtable_header *)entry;

		if (header->type == ACPI_MADT_TYPE_LOCAL_APIC) {

			if (map_lapic_id(header, acpi_id, &apic_id))

				break;

		} else if (header->type == ACPI_MADT_TYPE_LOCAL_SAPIC) {

			if (map_lsapic_id(header, acpi_id, &apic_id))

				break;

		}

		entry += header->length;

	}

	return apic_id;

}



static int map_mat_entry(acpi_handle handle, u32 acpi_id)

{

	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };

	union acpi_object *obj;

	struct acpi_subtable_header *header;

	int apic_id = -1;



	if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))

		goto exit;



	if (!buffer.length || !buffer.pointer)

		goto exit;



	obj = buffer.pointer;

	if (obj->type != ACPI_TYPE_BUFFER ||

	    obj->buffer.length < sizeof(struct acpi_subtable_header)) {

		goto exit;

	}



	header = (struct acpi_subtable_header *)obj->buffer.pointer;

	if (header->type == ACPI_MADT_TYPE_LOCAL_APIC) {

		map_lapic_id(header, acpi_id, &apic_id);

	} else if (header->type == ACPI_MADT_TYPE_LOCAL_SAPIC) {

		map_lsapic_id(header, acpi_id, &apic_id);

	}



exit:

	if (buffer.pointer)

		kfree(buffer.pointer);

	return apic_id;

}



static int get_apic_id(acpi_handle handle, u32 acpi_id)

{

	u16 apic_id;

	int i;

	int apic_id = -1;



	apic_id = arch_acpiid_to_apicid[acpi_id];

	if (apic_id == ARCH_BAD_APICID)

		return -1;

	apic_id = map_mat_entry(handle, acpi_id);

	if (apic_id == -1)

		apic_id = map_madt_entry(acpi_id);

	if (apic_id == -1)

		return apic_id;



	for (i = 0; i < NR_CPUS; i++) {

	for (i = 0; i < NR_CPUS; ++i) {

		if (arch_cpu_to_apicid[i] == apic_id)

			return i;

	}
@@ -456,7 +552,7 @@ static int acpi_processor_get_info(struct acpi_processor *pr) 
	 */

	pr->acpi_id = object.processor.proc_id;



	cpu_index = convert_acpiid_to_cpu(pr->acpi_id);

	cpu_index = get_apic_id(pr->handle, pr->acpi_id);



	/* Handle UP system running SMP kernel, with no LAPIC in MADT */

	if (!cpu0_initialized && (cpu_index == -1) &&
@@ -473,7 +569,7 @@ static int acpi_processor_get_info(struct acpi_processor *pr) 
	 *  less than the max # of CPUs. They should be ignored _iff

	 *  they are physically not present.

	 */

	if (cpu_index == -1) {

	if (pr->id == -1) {

		if (ACPI_FAILURE

		    (acpi_processor_hotadd_init(pr->handle, &pr->id))) {

			return -ENODEV;
@@ -895,6 +991,12 @@ static int __init acpi_processor_init(void) 
	memset(&processors, 0, sizeof(processors));

	memset(&errata, 0, sizeof(errata));



#ifdef CONFIG_SMP

	if (ACPI_FAILURE(acpi_get_table(ACPI_SIG_MADT, 0,

				(struct acpi_table_header **)&madt)))

		madt = 0;

#endif



	acpi_processor_dir = proc_mkdir(ACPI_PROCESSOR_CLASS, acpi_root_dir);

	if (!acpi_processor_dir)

		return -ENOMEM;

include/asm-i386/acpi.h

+7 −9
Original line number Diff line number Diff line
@@ -144,8 +144,6 @@ extern void acpi_reserve_bootmem(void); 


#endif /*CONFIG_ACPI_SLEEP*/



extern u8 x86_acpiid_to_apicid[];



#define ARCH_HAS_POWER_INIT	1



#endif /*__KERNEL__*/

include/asm-ia64/acpi.h

+0 −2
Original line number Diff line number Diff line
@@ -119,8 +119,6 @@ extern int __devinitdata pxm_to_nid_map[MAX_PXM_DOMAINS]; 
extern int __initdata nid_to_pxm_map[MAX_NUMNODES];

#endif



extern u16 ia64_acpiid_to_sapicid[];



/*

 * Refer Intel ACPI _PDC support document for bit definitions

 */