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Commit b3967dc5 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] Prefetch mmap_sem in ia64_do_page_fault()
  [IA64] Failure to resume after INIT in user space
  [IA64] Pass more data to the MCA/INIT notify_die hooks
  [IA64] always map VGA framebuffer UC, even if it supports WB
  [IA64] fix bug in ia64 __mutex_fastpath_trylock
  [IA64] for_each_possible_cpu: ia64
  [IA64] update HP CSR space discovery via ACPI
  [IA64] Wire up new syscalls {set,get}_robust_list
  [IA64] 'msg' may be used uninitialized in xpc_initiate_allocate()
  [IA64] Wire up new syscall sync_file_range()
parents cde227af 0ffe9849

arch/ia64/kernel/acpi-ext.c

+71 −72
Original line number Diff line number Diff line 
/*

 * arch/ia64/kernel/acpi-ext.c

 * (c) Copyright 2003, 2006 Hewlett-Packard Development Company, L.P.

 *	Alex Williamson <alex.williamson@hp.com>

 *	Bjorn Helgaas <bjorn.helgaas@hp.com>

 *

 * Copyright (C) 2003 Hewlett-Packard

 * Copyright (C) Alex Williamson

 * Copyright (C) Bjorn Helgaas

 *

 * Vendor specific extensions to ACPI.

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 */



#include <linux/config.h>

#include <linux/module.h>

#include <linux/types.h>

#include <linux/acpi.h>

#include <linux/efi.h>



#include <asm/acpi-ext.h>



struct acpi_vendor_descriptor {

	u8 guid_id;

	efi_guid_t guid;

};

/*

 * Device CSRs that do not appear in PCI config space should be described

 * via ACPI.  This would normally be done with Address Space Descriptors

 * marked as "consumer-only," but old versions of Windows and Linux ignore

 * the producer/consumer flag, so HP invented a vendor-defined resource to

 * describe the location and size of CSR space.

 */



struct acpi_vendor_info {

	struct acpi_vendor_descriptor *descriptor;

	u8 *data;

	u32 length;

struct acpi_vendor_uuid hp_ccsr_uuid = {

	.subtype = 2,

	.data = { 0xf9, 0xad, 0xe9, 0x69, 0x4f, 0x92, 0x5f, 0xab, 0xf6, 0x4a,

	    0x24, 0xd2, 0x01, 0x37, 0x0e, 0xad },

};



acpi_status

acpi_vendor_resource_match(struct acpi_resource *resource, void *context)

static acpi_status hp_ccsr_locate(acpi_handle obj, u64 *base, u64 *length)

{

	struct acpi_vendor_info *info = (struct acpi_vendor_info *)context;

	struct acpi_resource_vendor *vendor;

	struct acpi_vendor_descriptor *descriptor;

	u32 byte_length;

	acpi_status status;

	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };

	struct acpi_resource *resource;

	struct acpi_resource_vendor_typed *vendor;



	if (resource->type != ACPI_RESOURCE_TYPE_VENDOR)

		return AE_OK;

	status = acpi_get_vendor_resource(obj, METHOD_NAME__CRS, &hp_ccsr_uuid,

		&buffer);



	vendor = (struct acpi_resource_vendor *)&resource->data;

	descriptor = (struct acpi_vendor_descriptor *)vendor->byte_data;

	if (vendor->byte_length <= sizeof(*info->descriptor) ||

	    descriptor->guid_id != info->descriptor->guid_id ||

	    efi_guidcmp(descriptor->guid, info->descriptor->guid))

		return AE_OK;

	resource = buffer.pointer;

	vendor = &resource->data.vendor_typed;



	byte_length = vendor->byte_length - sizeof(struct acpi_vendor_descriptor);

	info->data = acpi_os_allocate(byte_length);

	if (!info->data)

		return AE_NO_MEMORY;

	if (ACPI_FAILURE(status) || vendor->byte_length < 16) {

		status = AE_NOT_FOUND;

		goto exit;

	}



	memcpy(info->data,

	       vendor->byte_data + sizeof(struct acpi_vendor_descriptor),

	       byte_length);

	info->length = byte_length;

	return AE_CTRL_TERMINATE;

	memcpy(base, vendor->byte_data, sizeof(*base));

	memcpy(length, vendor->byte_data + 8, sizeof(*length));



  exit:

	acpi_os_free(buffer.pointer);

	return status;

}



acpi_status

acpi_find_vendor_resource(acpi_handle obj, struct acpi_vendor_descriptor * id,

			  u8 ** data, u32 * byte_length)

struct csr_space {

	u64	base;

	u64	length;

};



static acpi_status find_csr_space(struct acpi_resource *resource, void *data)

{

	struct acpi_vendor_info info;

	struct csr_space *space = data;

	struct acpi_resource_address64 addr;

	acpi_status status;



	info.descriptor = id;

	info.data = NULL;

	status = acpi_resource_to_address64(resource, &addr);

	if (ACPI_SUCCESS(status) &&

	    addr.resource_type == ACPI_MEMORY_RANGE &&

	    addr.address_length &&

	    addr.producer_consumer == ACPI_CONSUMER) {

		space->base = addr.minimum;

		space->length = addr.address_length;

		return AE_CTRL_TERMINATE;

	}

	return AE_OK;		/* keep looking */

}



	acpi_walk_resources(obj, METHOD_NAME__CRS, acpi_vendor_resource_match,

			    &info);

	if (!info.data)

static acpi_status hp_crs_locate(acpi_handle obj, u64 *base, u64 *length)

{

	struct csr_space space = { 0, 0 };



	acpi_walk_resources(obj, METHOD_NAME__CRS, find_csr_space, &space);

	if (!space.length)

		return AE_NOT_FOUND;



	*data = info.data;

	*byte_length = info.length;

	*base = space.base;

	*length = space.length;

	return AE_OK;

}



struct acpi_vendor_descriptor hp_ccsr_descriptor = {

	.guid_id = 2,

	.guid =

	    EFI_GUID(0x69e9adf9, 0x924f, 0xab5f, 0xf6, 0x4a, 0x24, 0xd2, 0x01,

		     0x37, 0x0e, 0xad)

};



acpi_status hp_acpi_csr_space(acpi_handle obj, u64 *csr_base, u64 *csr_length)

{

	acpi_status status;

	u8 *data;

	u32 length;



	status =

	    acpi_find_vendor_resource(obj, &hp_ccsr_descriptor, &data, &length);



	if (ACPI_FAILURE(status) || length != 16)

		return AE_NOT_FOUND;



	memcpy(csr_base, data, sizeof(*csr_base));

	memcpy(csr_length, data + 8, sizeof(*csr_length));

	acpi_os_free(data);

	status = hp_ccsr_locate(obj, csr_base, csr_length);

	if (ACPI_SUCCESS(status))

		return status;



	return AE_OK;

	return hp_crs_locate(obj, csr_base, csr_length);

}



EXPORT_SYMBOL(hp_acpi_csr_space);

arch/ia64/kernel/entry.S

+3 −0
Original line number Diff line number Diff line
@@ -1606,5 +1606,8 @@ sys_call_table: 
	data8 sys_ni_syscall			// 1295 reserved for ppoll

	data8 sys_unshare

	data8 sys_splice

	data8 sys_set_robust_list

	data8 sys_get_robust_list

	data8 sys_sync_file_range		// 1300



	.org sys_call_table + 8*NR_syscalls	// guard against failures to increase NR_syscalls

arch/ia64/kernel/mca.c

+21 −12
Original line number Diff line number Diff line
@@ -581,10 +581,12 @@ ia64_mca_rendez_int_handler(int rendez_irq, void *arg, struct pt_regs *regs) 
{

	unsigned long flags;

	int cpu = smp_processor_id();

	struct ia64_mca_notify_die nd =

		{ .sos = NULL, .monarch_cpu = &monarch_cpu };



	/* Mask all interrupts */

	local_irq_save(flags);

	if (notify_die(DIE_MCA_RENDZVOUS_ENTER, "MCA", regs, 0, 0, 0)

	if (notify_die(DIE_MCA_RENDZVOUS_ENTER, "MCA", regs, (long)&nd, 0, 0)

			== NOTIFY_STOP)

		ia64_mca_spin(__FUNCTION__);
@@ -594,7 +596,7 @@ ia64_mca_rendez_int_handler(int rendez_irq, void *arg, struct pt_regs *regs) 
	 */

	ia64_sal_mc_rendez();



	if (notify_die(DIE_MCA_RENDZVOUS_PROCESS, "MCA", regs, 0, 0, 0)

	if (notify_die(DIE_MCA_RENDZVOUS_PROCESS, "MCA", regs, (long)&nd, 0, 0)

			== NOTIFY_STOP)

		ia64_mca_spin(__FUNCTION__);
@@ -602,7 +604,7 @@ ia64_mca_rendez_int_handler(int rendez_irq, void *arg, struct pt_regs *regs) 
	while (monarch_cpu != -1)

	       cpu_relax();	/* spin until monarch leaves */



	if (notify_die(DIE_MCA_RENDZVOUS_LEAVE, "MCA", regs, 0, 0, 0)

	if (notify_die(DIE_MCA_RENDZVOUS_LEAVE, "MCA", regs, (long)&nd, 0, 0)

			== NOTIFY_STOP)

		ia64_mca_spin(__FUNCTION__);
@@ -1023,6 +1025,8 @@ ia64_mca_handler(struct pt_regs *regs, struct switch_stack *sw, 
		&sos->proc_state_param;

	int recover, cpu = smp_processor_id();

	task_t *previous_current;

	struct ia64_mca_notify_die nd =

		{ .sos = sos, .monarch_cpu = &monarch_cpu };



	oops_in_progress = 1;	/* FIXME: make printk NMI/MCA/INIT safe */

	console_loglevel = 15;	/* make sure printks make it to console */
@@ -1031,7 +1035,7 @@ ia64_mca_handler(struct pt_regs *regs, struct switch_stack *sw, 


	previous_current = ia64_mca_modify_original_stack(regs, sw, sos, "MCA");

	monarch_cpu = cpu;

	if (notify_die(DIE_MCA_MONARCH_ENTER, "MCA", regs, 0, 0, 0)

	if (notify_die(DIE_MCA_MONARCH_ENTER, "MCA", regs, (long)&nd, 0, 0)

			== NOTIFY_STOP)

		ia64_mca_spin(__FUNCTION__);

	ia64_wait_for_slaves(cpu);
@@ -1043,7 +1047,7 @@ ia64_mca_handler(struct pt_regs *regs, struct switch_stack *sw, 
	 * spinning in SAL does not work.

	 */

	ia64_mca_wakeup_all();

	if (notify_die(DIE_MCA_MONARCH_PROCESS, "MCA", regs, 0, 0, 0)

	if (notify_die(DIE_MCA_MONARCH_PROCESS, "MCA", regs, (long)&nd, 0, 0)

			== NOTIFY_STOP)

		ia64_mca_spin(__FUNCTION__);
@@ -1064,7 +1068,7 @@ ia64_mca_handler(struct pt_regs *regs, struct switch_stack *sw, 
		ia64_sal_clear_state_info(SAL_INFO_TYPE_MCA);

		sos->os_status = IA64_MCA_CORRECTED;

	}

	if (notify_die(DIE_MCA_MONARCH_LEAVE, "MCA", regs, 0, 0, recover)

	if (notify_die(DIE_MCA_MONARCH_LEAVE, "MCA", regs, (long)&nd, 0, recover)

			== NOTIFY_STOP)

		ia64_mca_spin(__FUNCTION__);
@@ -1351,10 +1355,14 @@ ia64_init_handler(struct pt_regs *regs, struct switch_stack *sw, 
	static atomic_t monarchs;

	task_t *previous_current;

	int cpu = smp_processor_id();

	struct ia64_mca_notify_die nd =

		{ .sos = sos, .monarch_cpu = &monarch_cpu };



	oops_in_progress = 1;	/* FIXME: make printk NMI/MCA/INIT safe */

	console_loglevel = 15;	/* make sure printks make it to console */



	(void) notify_die(DIE_INIT_ENTER, "INIT", regs, (long)&nd, 0, 0);



	printk(KERN_INFO "Entered OS INIT handler. PSP=%lx cpu=%d monarch=%ld\n",

		sos->proc_state_param, cpu, sos->monarch);

	salinfo_log_wakeup(SAL_INFO_TYPE_INIT, NULL, 0, 0);
@@ -1390,15 +1398,15 @@ ia64_init_handler(struct pt_regs *regs, struct switch_stack *sw, 
		ia64_mc_info.imi_rendez_checkin[cpu] = IA64_MCA_RENDEZ_CHECKIN_INIT;

		while (monarch_cpu == -1)

		       cpu_relax();	/* spin until monarch enters */

		if (notify_die(DIE_INIT_SLAVE_ENTER, "INIT", regs, 0, 0, 0)

		if (notify_die(DIE_INIT_SLAVE_ENTER, "INIT", regs, (long)&nd, 0, 0)

				== NOTIFY_STOP)

			ia64_mca_spin(__FUNCTION__);

		if (notify_die(DIE_INIT_SLAVE_PROCESS, "INIT", regs, 0, 0, 0)

		if (notify_die(DIE_INIT_SLAVE_PROCESS, "INIT", regs, (long)&nd, 0, 0)

				== NOTIFY_STOP)

			ia64_mca_spin(__FUNCTION__);

		while (monarch_cpu != -1)

		       cpu_relax();	/* spin until monarch leaves */

		if (notify_die(DIE_INIT_SLAVE_LEAVE, "INIT", regs, 0, 0, 0)

		if (notify_die(DIE_INIT_SLAVE_LEAVE, "INIT", regs, (long)&nd, 0, 0)

				== NOTIFY_STOP)

			ia64_mca_spin(__FUNCTION__);

		printk("Slave on cpu %d returning to normal service.\n", cpu);
@@ -1409,7 +1417,7 @@ ia64_init_handler(struct pt_regs *regs, struct switch_stack *sw, 
	}



	monarch_cpu = cpu;

	if (notify_die(DIE_INIT_MONARCH_ENTER, "INIT", regs, 0, 0, 0)

	if (notify_die(DIE_INIT_MONARCH_ENTER, "INIT", regs, (long)&nd, 0, 0)

			== NOTIFY_STOP)

		ia64_mca_spin(__FUNCTION__);
@@ -1426,10 +1434,10 @@ ia64_init_handler(struct pt_regs *regs, struct switch_stack *sw, 
	 * to default_monarch_init_process() above and just print all the

	 * tasks.

	 */

	if (notify_die(DIE_INIT_MONARCH_PROCESS, "INIT", regs, 0, 0, 0)

	if (notify_die(DIE_INIT_MONARCH_PROCESS, "INIT", regs, (long)&nd, 0, 0)

			== NOTIFY_STOP)

		ia64_mca_spin(__FUNCTION__);

	if (notify_die(DIE_INIT_MONARCH_LEAVE, "INIT", regs, 0, 0, 0)

	if (notify_die(DIE_INIT_MONARCH_LEAVE, "INIT", regs, (long)&nd, 0, 0)

			== NOTIFY_STOP)

		ia64_mca_spin(__FUNCTION__);

	printk("\nINIT dump complete.  Monarch on cpu %d returning to normal service.\n", cpu);
@@ -1631,6 +1639,7 @@ ia64_mca_init(void) 
			printk(KERN_INFO "Increasing MCA rendezvous timeout from "

				"%ld to %ld milliseconds\n", timeout, isrv.v0);

			timeout = isrv.v0;

			(void) notify_die(DIE_MCA_NEW_TIMEOUT, "MCA", NULL, timeout, 0, 0);

			continue;

		}

		printk(KERN_ERR "Failed to register rendezvous interrupt "

arch/ia64/kernel/mca_asm.S

+5 −5
Original line number Diff line number Diff line
@@ -827,7 +827,7 @@ ia64_state_restore: 
	ld8 r9=[temp2],16	// sal_gp

	;;

	ld8 r22=[temp1],16	// pal_min_state, virtual

	ld8 r21=[temp2],16	// prev_IA64_KR_CURRENT

	ld8 r13=[temp2],16	// prev_IA64_KR_CURRENT

	;;

	ld8 r16=[temp1],16	// prev_IA64_KR_CURRENT_STACK

	ld8 r20=[temp2],16	// prev_task
@@ -848,7 +848,7 @@ ia64_state_restore: 
	mov cr.iim=temp3

	mov cr.iha=temp4

	dep r22=0,r22,62,1	// pal_min_state, physical, uncached

	mov IA64_KR(CURRENT)=r21

	mov IA64_KR(CURRENT)=r13

	ld8 r8=[temp1]		// os_status

	ld8 r10=[temp2]		// context
@@ -856,7 +856,7 @@ ia64_state_restore: 
	 * avoid any dependencies on the algorithm in ia64_switch_to(), just

	 * purge any existing CURRENT_STACK mapping and insert the new one.

	 *

	 * r16 contains prev_IA64_KR_CURRENT_STACK, r21 contains

	 * r16 contains prev_IA64_KR_CURRENT_STACK, r13 contains

	 * prev_IA64_KR_CURRENT, these values may have been changed by the C

	 * code.  Do not use r8, r9, r10, r22, they contain values ready for

	 * the return to SAL.
@@ -873,7 +873,7 @@ ia64_state_restore: 
	;;

	srlz.d



	extr.u r19=r21,61,3			// r21 = prev_IA64_KR_CURRENT

	extr.u r19=r13,61,3			// r13 = prev_IA64_KR_CURRENT

	shl r20=r16,IA64_GRANULE_SHIFT		// r16 = prev_IA64_KR_CURRENT_STACK

	movl r21=PAGE_KERNEL			// page properties

	;;
@@ -883,7 +883,7 @@ ia64_state_restore: 
(p6)	br.spnt 1f				// the dreaded cpu 0 idle task in region 5:(

	;;

	mov cr.itir=r18

	mov cr.ifa=r21

	mov cr.ifa=r13

	mov r20=IA64_TR_CURRENT_STACK

	;;

	itr.d dtr[r20]=r21

arch/ia64/kernel/module.c

+1 −1
Original line number Diff line number Diff line
@@ -947,7 +947,7 @@ void 
percpu_modcopy (void *pcpudst, const void *src, unsigned long size)

{

	unsigned int i;

	for_each_cpu(i) {

	for_each_possible_cpu(i) {

		memcpy(pcpudst + __per_cpu_offset[i], src, size);

	}

}