Merge groveronline.com:/root/bk/linux-2.5

into groveronline.com:/root/bk/linux-acpi

Documentation/kernel-parameters.txt

@@ -516,6 +516,14 @@ running once the system is up.
 			[KNL,BOOT] Force usage of a specific region of memory
 			Region of memory to be used, from ss to ss+nn.
 
+	mem=nn[KMG]#ss[KMG]
+			[KNL,BOOT,ACPI] Mark specific memory as ACPI data.
+			Region of memory to be used, from ss to ss+nn.
+
+	mem=nn[KMG]$ss[KMG]
+			[KNL,BOOT,ACPI] Mark specific memory as reserved.
+			Region of memory to be used, from ss to ss+nn.
+
 	mem=nopentium	[BUGS=IA-32] Disable usage of 4MB pages for kernel
 			memory.
 

arch/i386/kernel/acpi/wakeup.S

@@ -319,6 +319,31 @@ ret_point:
 	pushl saved_context_eflags ; popfl
 	ret
 
+ENTRY(do_suspend_lowlevel_s4bios)
+	cmpl $0,4(%esp)
+	jne ret_point
+	call save_processor_state
+
+	movl %esp, saved_context_esp
+	movl %eax, saved_context_eax
+	movl %ebx, saved_context_ebx
+	movl %ecx, saved_context_ecx
+	movl %edx, saved_context_edx
+	movl %ebp, saved_context_ebp
+	movl %esi, saved_context_esi
+	movl %edi, saved_context_edi
+	pushfl ; popl saved_context_eflags
+
+	movl $ret_point,saved_eip
+	movl %esp,saved_esp
+	movl %ebp,saved_ebp
+	movl %ebx,saved_ebx
+	movl %edi,saved_edi
+	movl %esi,saved_esi
+
+	call acpi_enter_sleep_state_s4bios
+	ret
+
 ALIGN
 # saved registers
 saved_gdt:	.long	0,0

arch/i386/kernel/setup.c

@@ -552,6 +552,12 @@ static void __init parse_cmdline_early (char ** cmdline_p)
 				if (*from == '@') {
 					start_at = memparse(from+1, &from);
 					add_memory_region(start_at, mem_size, E820_RAM);
+				} else if (*from == '#') {
+					start_at = memparse(from+1, &from);
+					add_memory_region(start_at, mem_size, E820_ACPI);
+				} else if (*from == '$') {
+					start_at = memparse(from+1, &from);
+					add_memory_region(start_at, mem_size, E820_RESERVED);
 				} else {
 					limit_regions(mem_size);
 					userdef=1;

drivers/acpi/Kconfig

@@ -6,6 +6,7 @@ menu "ACPI Support"
 
 config ACPI
 	bool "ACPI Support" if X86
+	depends on !X86_VISWS
 	default y if IA64 && (!IA64_HP_SIM || IA64_SGI_SN)
 	---help---
 	  Advanced Configuration and Power Interface (ACPI) support for 

drivers/acpi/events/Makefile

@@ -4,6 +4,6 @@
 
 obj-y := evevent.o  evregion.o  evsci.o    evxfevnt.o \
 	 evmisc.o   evrgnini.o  evxface.o  evxfregn.o \
-	 evgpe.o
+	 evgpe.o    evgpeblk.o
 
 EXTRA_CFLAGS += $(ACPI_CFLAGS)

drivers/acpi/hardware/hwsleep.c

@@ -335,6 +335,51 @@ acpi_enter_sleep_state (
 	return_ACPI_STATUS (AE_OK);
 }
 
+
+/******************************************************************************
+ *
+ * FUNCTION:    acpi_enter_sleep_state_s4bios
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Perform a S4 bios request.
+ *              THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_enter_sleep_state_s4bios (
+	void)
+{
+	u32                             in_value;
+	acpi_status                     status;
+
+
+	ACPI_FUNCTION_TRACE ("acpi_enter_sleep_state_s4bios");
+
+	acpi_set_register (ACPI_BITREG_WAKE_STATUS, 1, ACPI_MTX_LOCK);
+	acpi_hw_clear_acpi_status();
+
+	acpi_hw_disable_non_wakeup_gpes();
+
+	ACPI_FLUSH_CPU_CACHE();
+
+	status = acpi_os_write_port (acpi_gbl_FADT->smi_cmd, (acpi_integer) acpi_gbl_FADT->S4bios_req, 8);
+
+	do {
+		acpi_os_stall(1000);
+		status = acpi_get_register (ACPI_BITREG_WAKE_STATUS, &in_value, ACPI_MTX_LOCK);
+		if (ACPI_FAILURE (status)) {
+			return_ACPI_STATUS (status);
+		}
+	} while (!in_value);
+
+	return_ACPI_STATUS (AE_OK);
+}
+
+
 /******************************************************************************
  *
  * FUNCTION:    acpi_leave_sleep_state

drivers/acpi/osl.c

@@ -514,10 +514,12 @@ acpi_os_write_pci_configuration (
 
 /* TODO: Change code to take advantage of driver model more */
 void
-acpi_os_derive_pci_id (
+acpi_os_derive_pci_id_2 (
 	acpi_handle		rhandle,        /* upper bound  */
 	acpi_handle		chandle,        /* current node */
-	struct acpi_pci_id	**id)
+	struct acpi_pci_id	**id,
+	int			*is_bridge,
+	u8			*bus_number)
 {
 	acpi_handle		handle;
 	struct acpi_pci_id	*pci_id = *id;
@@ -528,7 +530,7 @@ acpi_os_derive_pci_id (
 
 	acpi_get_parent(chandle, &handle);
 	if (handle != rhandle) {
-		acpi_os_derive_pci_id(rhandle, handle, &pci_id);
+		acpi_os_derive_pci_id_2(rhandle, handle, &pci_id, is_bridge, bus_number);
 
 		status = acpi_get_type(handle, &type);
 		if ( (ACPI_FAILURE(status)) || (type != ACPI_TYPE_DEVICE) )
@@ -539,17 +541,42 @@ acpi_os_derive_pci_id (
 			pci_id->device  = ACPI_HIWORD (ACPI_LODWORD (temp));
 			pci_id->function = ACPI_LOWORD (ACPI_LODWORD (temp));
 
+			if (*is_bridge)
+				pci_id->bus = *bus_number;
+
 			/* any nicer way to get bus number of bridge ? */
 			status = acpi_os_read_pci_configuration(pci_id, 0x0e, &tu8, 8);
-			if (ACPI_SUCCESS(status) && (tu8 & 0x7f) == 1) {
+			if (ACPI_SUCCESS(status) &&
+			    ((tu8 & 0x7f) == 1 || (tu8 & 0x7f) == 2)) {
+				status = acpi_os_read_pci_configuration(pci_id, 0x18, &tu8, 8);
+				if (!ACPI_SUCCESS(status)) {
+					/* Certainly broken...  FIX ME */
+					return;
+				}
+				*is_bridge = 1;
+				pci_id->bus = tu8;
 				status = acpi_os_read_pci_configuration(pci_id, 0x19, &tu8, 8);
-				if (ACPI_SUCCESS(status))
-					pci_id->bus = tu8;
-			}
+				if (ACPI_SUCCESS(status)) {
+					*bus_number = tu8;
+				}
+			} else
+				*is_bridge = 0;
 		}
 	}
 }
 
+void
+acpi_os_derive_pci_id (
+	acpi_handle		rhandle,        /* upper bound  */
+	acpi_handle		chandle,        /* current node */
+	struct acpi_pci_id	**id)
+{
+	int is_bridge = 1;
+	u8 bus_number = (*id)->bus;
+
+	acpi_os_derive_pci_id_2(rhandle, chandle, id, &is_bridge, &bus_number);
+}
+
 #else /*!CONFIG_ACPI_PCI*/
 
 acpi_status

drivers/acpi/processor.c

@@ -1560,7 +1560,7 @@ acpi_processor_get_info (
 	acpi_status		status = 0;
 	union acpi_object	object = {0};
 	struct acpi_buffer	buffer = {sizeof(union acpi_object), &object};
-	static int		cpu_count = 0;
+	static int		cpu_index = 0;
 
 	ACPI_FUNCTION_TRACE("acpi_processor_get_info");
 
@@ -1570,6 +1570,13 @@ acpi_processor_get_info (
 	if (num_online_cpus() > 1)
 		errata.smp = TRUE;
 
+	/*
+	 *  Extra Processor objects may be enumerated on MP systems with
+	 *  less than the max # of CPUs. They should be ignored.
+	 */
+	if ((cpu_index + 1) > num_online_cpus())
+		return_VALUE(-ENODEV);
+
 	acpi_processor_errata(pr);
 
 	/*
@@ -1601,7 +1608,7 @@ acpi_processor_get_info (
 	 * TBD: Synch processor ID (via LAPIC/LSAPIC structures) on SMP.
 	 *	>>> 'acpi_get_processor_id(acpi_id, &id)' in arch/xxx/acpi.c
 	 */
-	pr->id = cpu_count++;
+	pr->id = cpu_index++;
 	pr->acpi_id = object.processor.proc_id;
 
 	ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Processor [%d:%d]\n", pr->id, 
@@ -1609,21 +1616,17 @@ acpi_processor_get_info (
 
 	if (!object.processor.pblk_address)
 		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No PBLK (NULL address)\n"));
-	else if (object.processor.pblk_length < 4)
+	else if (object.processor.pblk_length != 6)
 		ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid PBLK length [%d]\n",
 			object.processor.pblk_length));
 	else {
 		pr->throttling.address = object.processor.pblk_address;
 		pr->throttling.duty_offset = acpi_fadt.duty_offset;
 		pr->throttling.duty_width = acpi_fadt.duty_width;
-
-		if (object.processor.pblk_length >= 5)
-			pr->power.states[ACPI_STATE_C2].address =
-				object.processor.pblk_address + 4;
-
-		if (object.processor.pblk_length >= 6)
-			pr->power.states[ACPI_STATE_C3].address =
-				object.processor.pblk_address + 5;
+		pr->power.states[ACPI_STATE_C2].address =
+			object.processor.pblk_address + 4;
+		pr->power.states[ACPI_STATE_C3].address =
+			object.processor.pblk_address + 5;
 	}
 
 	acpi_processor_get_power_info(pr);

drivers/acpi/tables.c

@@ -379,6 +379,7 @@ acpi_table_get_sdt (
 
 		sdt.pa = ((struct acpi20_table_rsdp*)rsdp)->xsdt_address;
 
+		/* map in just the header */
 		header = (struct acpi_table_header *)
 			__acpi_map_table(sdt.pa, sizeof(struct acpi_table_header));
 
@@ -387,6 +388,15 @@ acpi_table_get_sdt (
 			return -ENODEV;
 		}
 
+		/* remap in the entire table before processing */
+		mapped_xsdt = (struct acpi_table_xsdt *)
+			__acpi_map_table(sdt.pa, header->length);
+		if (!mapped_xsdt) {
+			printk(KERN_WARNING PREFIX "Unable to map XSDT\n");
+			return -ENODEV;
+		}
+		header = &mapped_xsdt->header;
+
 		if (strncmp(header->signature, "XSDT", 4)) {
 			printk(KERN_WARNING PREFIX "XSDT signature incorrect\n");
 			return -ENODEV;
@@ -404,15 +414,6 @@ acpi_table_get_sdt (
 			sdt.count = ACPI_MAX_TABLES;
 		}
 
-		mapped_xsdt = (struct acpi_table_xsdt *)
-			__acpi_map_table(sdt.pa, header->length);
-		if (!mapped_xsdt) {
-			printk(KERN_WARNING PREFIX "Unable to map XSDT\n");
-			return -ENODEV;
-		}
-
-		header = &mapped_xsdt->header;
-
 		for (i = 0; i < sdt.count; i++)
 			sdt.entry[i].pa = (unsigned long) mapped_xsdt->entry[i];
 	}
@@ -425,6 +426,7 @@ acpi_table_get_sdt (
 
 		sdt.pa = rsdp->rsdt_address;
 
+		/* map in just the header */
 		header = (struct acpi_table_header *)
 			__acpi_map_table(sdt.pa, sizeof(struct acpi_table_header));
 		if (!header) {
@@ -432,6 +434,15 @@ acpi_table_get_sdt (
 			return -ENODEV;
 		}
 
+		/* remap in the entire table before processing */
+		mapped_rsdt = (struct acpi_table_rsdt *)
+			__acpi_map_table(sdt.pa, header->length);
+		if (!mapped_rsdt) {
+			printk(KERN_WARNING PREFIX "Unable to map RSDT\n");
+			return -ENODEV;
+		}
+		header = &mapped_rsdt->header;
+
 		if (strncmp(header->signature, "RSDT", 4)) {
 			printk(KERN_WARNING PREFIX "RSDT signature incorrect\n");
 			return -ENODEV;
@@ -449,15 +460,6 @@ acpi_table_get_sdt (
 			sdt.count = ACPI_MAX_TABLES;
 		}
 
-		mapped_rsdt = (struct acpi_table_rsdt *)
-			__acpi_map_table(sdt.pa, header->length);
-		if (!mapped_rsdt) {
-			printk(KERN_WARNING PREFIX "Unable to map RSDT\n");
-			return -ENODEV;
-		}
-
-		header = &mapped_rsdt->header;
-
 		for (i = 0; i < sdt.count; i++)
 			sdt.entry[i].pa = (unsigned long) mapped_rsdt->entry[i];
 	}
@@ -471,12 +473,20 @@ acpi_table_get_sdt (
 
 	for (i = 0; i < sdt.count; i++) {
 
+		/* map in just the header */
 		header = (struct acpi_table_header *)
 			__acpi_map_table(sdt.entry[i].pa,
 				sizeof(struct acpi_table_header));
 		if (!header)
 			continue;
 
+		/* remap in the entire table before processing */
+		header = (struct acpi_table_header *)
+			__acpi_map_table(sdt.entry[i].pa,
+				header->length);
+		if (!header)
+			continue;
+	               
 		acpi_table_print(header, sdt.entry[i].pa);
 
 		if (acpi_table_compute_checksum(header, header->length)) {