patch-2.4.23 linux-2.4.23/arch/i386/kernel/acpitable.c

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diff -urN linux-2.4.22/arch/i386/kernel/acpitable.c linux-2.4.23/arch/i386/kernel/acpitable.c
@@ -1,553 +0,0 @@
-/*
- *  acpitable.c - IA32-specific ACPI boot-time initialization (Revision: 1)
- *
- *  Copyright (C) 1999 Andrew Henroid
- *  Copyright (C) 2001 Richard Schaal
- *  Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
- *  Copyright (C) 2001 Jun Nakajima <jun.nakajima@intel.com>
- *  Copyright (C) 2001 Arjan van de Ven <arjanv@redhat.com>
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
- * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- *
- * $Id: acpitable.c,v 1.7 2001/11/04 12:21:18 fenrus Exp $
- */
-#include <linux/config.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/types.h>
-#include <linux/stddef.h>
-#include <linux/slab.h>
-#include <linux/pci.h>
-#include <asm/mpspec.h>
-#include <asm/io.h>
-#include <asm/apic.h>
-#include <asm/apicdef.h>
-#include <asm/page.h>
-#include <asm/pgtable.h>
-
-#include "acpitable.h"
-
-static acpi_table_handler acpi_boot_ops[ACPI_TABLE_COUNT];
-
-int acpi_lapic;
-
-static unsigned char __init
-acpi_checksum(void *buffer, int length)
-{
-	int i;
-	unsigned char *bytebuffer;
-	unsigned char sum = 0;
-
-	if (!buffer || length <= 0)
-		return 0;
-
-	bytebuffer = (unsigned char *) buffer;
-
-	for (i = 0; i < length; i++)
-		sum += *(bytebuffer++);
-
-	return sum;
-}
-
-static void __init
-acpi_print_table_header(acpi_table_header * header)
-{
-	if (!header)
-		return;
-
-	printk(KERN_INFO "ACPI table found: %.4s v%d [%.6s %.8s %d.%d]\n",
-	       header->signature, header->revision, header->oem_id,
-	       header->oem_table_id, header->oem_revision >> 16,
-	       header->oem_revision & 0xffff);
-
-	return;
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_tb_scan_memory_for_rsdp
- *
- * PARAMETERS:  address       - Starting pointer for search
- *              length        - Maximum length to search
- *
- * RETURN:      Pointer to the RSDP if found and valid, otherwise NULL.
- *
- * DESCRIPTION: Search a block of memory for the RSDP signature
- *
- ******************************************************************************/
-
-static void *__init
-acpi_tb_scan_memory_for_rsdp(void *address, int length)
-{
-	int offset;
-
-	if (length <= 0)
-		return NULL;
-
-	/* Search from given start addr for the requested length  */
-
-	offset = 0;
-
-	while (offset < length) {
-		/* The signature must match and the checksum must be correct */
-		if (strncmp(address, RSDP_SIG, sizeof(RSDP_SIG) - 1) == 0 &&
-		    acpi_checksum(address, RSDP_CHECKSUM_LENGTH) == 0) {
-			/* If so, we have found the RSDP */
-			printk(KERN_INFO "ACPI: RSDP located at physical address %p\n",
-			       address);
-			return address;
-		}
-		offset += RSDP_SCAN_STEP;
-		address += RSDP_SCAN_STEP;
-	}
-
-	/* Searched entire block, no RSDP was found */
-	dprintk(KERN_INFO "ACPI: Searched entire block 0x%x:0x%x, no RSDP was found.\n",
-		(int)address, (int)address + length);
-	return NULL;
-}
-
-/*******************************************************************************
- *
- * FUNCTION:    acpi_find_root_pointer
- *
- * PARAMETERS:  none
- *
- * RETURN:      physical address of the RSDP 
- *
- * DESCRIPTION: Search lower 1_mbyte of memory for the root system descriptor
- *              pointer structure.  If it is found, set *RSDP to point to it.
- *
- *              NOTE: The RSDP must be either in the first 1_k of the Extended
- *              BIOS Data Area or between E0000 and FFFFF (ACPI 1.0 section
- *              5.2.2; assertion #421).
- *
- ******************************************************************************/
-
-static struct acpi_table_rsdp * __init
-acpi_find_root_pointer(void)
-{
-	struct acpi_table_rsdp * rsdp;
-
-	/*
-	 * Physical address is given
-	 */
-	/*
-	 * Region 1) Search EBDA (low memory) paragraphs
-	 */
-	rsdp = acpi_tb_scan_memory_for_rsdp(__va(LO_RSDP_WINDOW_BASE),
-					 LO_RSDP_WINDOW_SIZE);
-
-	if (rsdp)
-		return rsdp;
-
-	/*
-	 * Region 2) Search upper memory: 16-byte boundaries in E0000h-F0000h
-	 */
-	rsdp = acpi_tb_scan_memory_for_rsdp(__va(HI_RSDP_WINDOW_BASE),
-					       HI_RSDP_WINDOW_SIZE);
-
-	
-					     
-	if (rsdp)
-		return rsdp;
-
-	printk(KERN_ERR "ACPI: System description tables not found\n");
-	return NULL;
-}
-
-
-/*
- * Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END,
- * to map the target physical address. The problem is that set_fixmap()
- * provides a single page, and it is possible that the page is not
- * sufficient.
- * By using this area, we can map up to MAX_IO_APICS pages temporarily,
- * i.e. until the next __va_range() call.
- *
- * Important Safety Note:  The fixed I/O APIC page numbers are *subtracted*
- * from the fixed base.  That's why we start at FIX_IO_APIC_BASE_END and
- * count idx down while incrementing the phys address.
- */
-static __init char *
-__va_range(unsigned long phys, unsigned long size)
-{
-	unsigned long base, offset, mapped_size;
-	int idx;
-
-	offset = phys & (PAGE_SIZE - 1);
-	mapped_size = PAGE_SIZE - offset;
-	set_fixmap(FIX_IO_APIC_BASE_END, phys);
-	base = fix_to_virt(FIX_IO_APIC_BASE_END);
-	dprintk("__va_range(0x%lx, 0x%lx): idx=%d mapped at %lx\n", phys, size,
-		FIX_IO_APIC_BASE_END, base);
-
-	/*
-	 * Most cases can be covered by the below.
-	 */
-	idx = FIX_IO_APIC_BASE_END;
-	while (mapped_size < size) {
-		if (--idx < FIX_IO_APIC_BASE_0)
-			return 0;	/* cannot handle this */
-		phys += PAGE_SIZE;
-		set_fixmap(idx, phys);
-		mapped_size += PAGE_SIZE;
-	}
-
-	return ((unsigned char *) base + offset);
-}
-
-static int __init acpi_tables_init(void)
-{
-	int result = -ENODEV;
-	acpi_table_header *header = NULL;
-	struct acpi_table_rsdp *rsdp = NULL;
-	struct acpi_table_rsdt *rsdt = NULL;
-	struct acpi_table_rsdt saved_rsdt;
-	int tables = 0;
-	int type = 0;
-	int i = 0;
-
-
-	rsdp = (struct acpi_table_rsdp *) acpi_find_root_pointer();
-
-	if (!rsdp)
-		return -ENODEV;
-		
-	printk(KERN_INFO "%.8s v%d [%.6s]\n", rsdp->signature, rsdp->revision,
-	       rsdp->oem_id);
-	       
-	if (strncmp(rsdp->signature, RSDP_SIG,strlen(RSDP_SIG))) {
-		printk(KERN_WARNING "RSDP table signature incorrect\n");
-		return -EINVAL;
-	}
-
-	rsdt = (struct acpi_table_rsdt *)
-	    __va_range(rsdp->rsdt_address, sizeof(struct acpi_table_rsdt));
-
-	if (!rsdt) {
-		printk(KERN_WARNING "ACPI: Invalid root system description tables (RSDT)\n");
-		return -ENODEV;
-	}
-	
-	header = & rsdt->header;
-	acpi_print_table_header(header);
-	
-	if (strncmp(header->signature, RSDT_SIG, strlen(RSDT_SIG))) {
-		printk(KERN_WARNING "ACPI: RSDT signature incorrect\n");
-		return -ENODEV;
-	}
-		
-	/* 
-	 * The number of tables is computed by taking the 
-	 * size of all entries (header size minus total 
-	 * size of RSDT) divided by the size of each entry
-	 * (4-byte table pointers).
-	 */
-	tables = (header->length - sizeof(acpi_table_header)) / 4;
-		    
-	memcpy(&saved_rsdt, rsdt, sizeof(saved_rsdt));
-
-	if (saved_rsdt.header.length > sizeof(saved_rsdt)) {
-		printk(KERN_WARNING "ACPI: Too big length in RSDT: %d\n", saved_rsdt.header.length);
-		return -ENODEV;
-	}
-
-	for (i = 0; i < tables; i++) {
-		/* Map in header, then map in full table length. */
-		header = (acpi_table_header *)
-			    __va_range(saved_rsdt.entry[i],
-				       sizeof(acpi_table_header));
-		if (!header)
-			break;
-		header = (acpi_table_header *)
-			    __va_range(saved_rsdt.entry[i], header->length);
-		if (!header)
-			break;
-
-		acpi_print_table_header(header);
-		
-		if (acpi_checksum(header,header->length)) {
-			printk(KERN_WARNING "ACPI %s has invalid checksum\n", 
-				acpi_table_signatures[i]);
-			continue;
-		}
-		
-		for (type = 0; type < ACPI_TABLE_COUNT; type++)
-			if (!strncmp((char *) &header->signature,
-			     acpi_table_signatures[type],strlen(acpi_table_signatures[type])))
-				break;
-
-		if (type >= ACPI_TABLE_COUNT) {
-			printk(KERN_WARNING "ACPI: Unsupported table %.4s\n",
-			       header->signature);
-			continue;
-		}
-
-
-		if (!acpi_boot_ops[type])
-			continue;
-			
-		result = acpi_boot_ops[type] (header,
-						 (unsigned long) saved_rsdt.
-						 entry[i]);
-	}
-
-	return result;
-}
-
-static int total_cpus __initdata = 0;
-int have_acpi_tables;
-
-extern void __init MP_processor_info(struct mpc_config_processor *);
-
-static void __init
-acpi_parse_lapic(struct acpi_table_lapic *local_apic)
-{
-	struct mpc_config_processor proc_entry;
-	int ix = 0;
-
-	if (!local_apic)
-		return;
-
-	printk(KERN_INFO "LAPIC (acpi_id[0x%04x] id[0x%x] enabled[%d])\n",
-		local_apic->acpi_id, local_apic->id, local_apic->flags.enabled);
-
-	printk(KERN_INFO "CPU %d (0x%02x00)", total_cpus, local_apic->id);
-
-	if (local_apic->flags.enabled) {
-		printk(" enabled\n");
-		ix = local_apic->id;
-		if (ix >= MAX_APICS) {
-			printk(KERN_WARNING
-			       "Processor #%d INVALID - (Max ID: %d).\n", ix,
-			       MAX_APICS);
-			return;
-		}
-		/* 
-		 * Fill in the info we want to save.  Not concerned about 
-		 * the processor ID.  Processor features aren't present in 
-		 * the table.
-		 */
-		proc_entry.mpc_type = MP_PROCESSOR;
-		proc_entry.mpc_apicid = local_apic->id;
-		proc_entry.mpc_cpuflag = CPU_ENABLED;
-		if (proc_entry.mpc_apicid == boot_cpu_physical_apicid) {
-			printk(" (BSP)");
-			proc_entry.mpc_cpuflag |= CPU_BOOTPROCESSOR;
-		}
-		proc_entry.mpc_cpufeature =
-		    (boot_cpu_data.x86 << 8) | 
-		    (boot_cpu_data.x86_model << 4) | 
-		     boot_cpu_data.x86_mask;
-		proc_entry.mpc_featureflag = boot_cpu_data.x86_capability[0];
-		proc_entry.mpc_reserved[0] = 0;
-		proc_entry.mpc_reserved[1] = 0;
-		proc_entry.mpc_apicver = 0x10;	/* integrated APIC */
-		MP_processor_info(&proc_entry);
-	} else {
-		printk(" disabled\n");
-	}
-
-	total_cpus++;
-	return;
-}
-
-static void __init
-acpi_parse_ioapic(struct acpi_table_ioapic *ioapic)
-{
-
-	if (!ioapic)
-		return;
-
-	printk(KERN_INFO
-	       "IOAPIC (id[0x%x] address[0x%x] global_irq_base[0x%x])\n",
-	       ioapic->id, ioapic->address, ioapic->global_irq_base);
-
-	if (nr_ioapics >= MAX_IO_APICS) {
-		printk(KERN_WARNING
-		       "Max # of I/O APICs (%d) exceeded (found %d).\n",
-		       MAX_IO_APICS, nr_ioapics);
-/*		panic("Recompile kernel with bigger MAX_IO_APICS!\n");   */
-	}
-}
-
-
-/* Interrupt source overrides inform the machine about exceptions
-   to the normal "PIC" mode interrupt routing */
-   
-static void __init
-acpi_parse_int_src_ovr(struct acpi_table_int_src_ovr *intsrc)
-{
-	if (!intsrc)
-		return;
-
-	printk(KERN_INFO
-	       "INT_SRC_OVR (bus[%d] irq[0x%x] global_irq[0x%x] polarity[0x%x] trigger[0x%x])\n",
-	       intsrc->bus, intsrc->bus_irq, intsrc->global_irq,
-	       intsrc->flags.polarity, intsrc->flags.trigger);
-}
-
-/*
- * At this point, we look at the interrupt assignment entries in the MPS
- * table.
- */ 
- 
-static void __init acpi_parse_nmi_src(struct acpi_table_nmi_src *nmisrc)
-{
-	if (!nmisrc)
-		return;
-
-	printk(KERN_INFO
-	       "NMI_SRC (polarity[0x%x] trigger[0x%x] global_irq[0x%x])\n",
-	       nmisrc->flags.polarity, nmisrc->flags.trigger,
-	       nmisrc->global_irq);
-
-}
-static void __init
-acpi_parse_lapic_nmi(struct acpi_table_lapic_nmi *localnmi)
-{
-	if (!localnmi)
-		return;
-
-	printk(KERN_INFO
-	       "LAPIC_NMI (acpi_id[0x%04x] polarity[0x%x] trigger[0x%x] lint[0x%x])\n",
-	       localnmi->acpi_id, localnmi->flags.polarity,
-	       localnmi->flags.trigger, localnmi->lint);
-}
-static void __init
-acpi_parse_lapic_addr_ovr(struct acpi_table_lapic_addr_ovr *lapic_addr_ovr)
-{
-	if (!lapic_addr_ovr)
-		return;
-
-	printk(KERN_INFO "LAPIC_ADDR_OVR (address[0x%lx])\n",
-	       (unsigned long) lapic_addr_ovr->address);
-
-}
-
-static void __init
-acpi_parse_plat_int_src(struct acpi_table_plat_int_src *plintsrc)
-{
-	if (!plintsrc)
-		return;
-
-	printk(KERN_INFO
-	       "PLAT_INT_SRC (polarity[0x%x] trigger[0x%x] type[0x%x] id[0x%04x] eid[0x%x] iosapic_vector[0x%x] global_irq[0x%x]\n",
-	       plintsrc->flags.polarity, plintsrc->flags.trigger,
-	       plintsrc->type, plintsrc->id, plintsrc->eid,
-	       plintsrc->iosapic_vector, plintsrc->global_irq);
-}
-static int __init
-acpi_parse_madt(acpi_table_header * header, unsigned long phys)
-{
-
-	struct acpi_table_madt *madt;	    
-	acpi_madt_entry_header *entry_header;
-	int table_size;
-	
-	madt = (struct acpi_table_madt *) __va_range(phys, header->length);
-
-	if (!madt)
-		return -EINVAL;
-
-	table_size = (int) (header->length - sizeof(*madt));
-	entry_header =
-	    (acpi_madt_entry_header *) ((void *) madt + sizeof(*madt));
-
-	while (entry_header && (table_size > 0)) {
-		switch (entry_header->type) {
-		case ACPI_MADT_LAPIC:
-			acpi_parse_lapic((struct acpi_table_lapic *)
-					 entry_header);
-			break;
-		case ACPI_MADT_IOAPIC:
-			acpi_parse_ioapic((struct acpi_table_ioapic *)
-					  entry_header);
-			break;
-		case ACPI_MADT_INT_SRC_OVR:
-			acpi_parse_int_src_ovr((struct acpi_table_int_src_ovr *)
-					       entry_header);
-			break;
-		case ACPI_MADT_NMI_SRC:
-			acpi_parse_nmi_src((struct acpi_table_nmi_src *)
-					   entry_header);
-			break;
-		case ACPI_MADT_LAPIC_NMI:
-			acpi_parse_lapic_nmi((struct acpi_table_lapic_nmi *)
-					     entry_header);
-			break;
-		case ACPI_MADT_LAPIC_ADDR_OVR:
-			acpi_parse_lapic_addr_ovr((struct
-						   acpi_table_lapic_addr_ovr *)
-						  entry_header);
-			break;
-		case ACPI_MADT_PLAT_INT_SRC:
-			acpi_parse_plat_int_src((struct acpi_table_plat_int_src
-						 *) entry_header);
-			break;
-		default:
-			printk(KERN_WARNING
-			       "Unsupported MADT entry type 0x%x\n",
-			       entry_header->type);
-			break;
-		}
-		table_size -= entry_header->length;
-		entry_header =
-		    (acpi_madt_entry_header *) ((void *) entry_header +
-						entry_header->length);
-	}
-
-	if (!total_cpus) {
-		printk("ACPI: No Processors found in the APCI table.\n");
-		return -EINVAL;
-	}
-
-	printk(KERN_INFO "%d CPUs total\n", total_cpus);
-
-	if (madt->lapic_address)
-		mp_lapic_addr = madt->lapic_address;
-	else
-		mp_lapic_addr = APIC_DEFAULT_PHYS_BASE;
-
-	printk(KERN_INFO "Local APIC address %x\n", madt->lapic_address);
-
-	return 0;
-}
-
-
-/*
- * Configure the processor info using MADT in the ACPI tables. If we fail to
- * configure that, then we use the MPS tables.
- */
-void __init
-acpi_boot_init(void)
-{
-
-	memset(&acpi_boot_ops, 0, sizeof(acpi_boot_ops));
-	acpi_boot_ops[ACPI_APIC] = acpi_parse_madt;
-
-	/*
-	 * Only do this when requested, either because of CPU/Bios type or from the command line
-	 */
-
-	if (!acpi_tables_init())
-		acpi_lapic = 1;
-}
-
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