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Merge branch 'x86/uv' into x86/devel

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This commit is contained in:
Ingo Molnar 2008-07-08 12:24:13 +02:00
commit e3ae0acf59
11 changed files with 1181 additions and 10 deletions
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2
arch/x86/kernel/Makefile
View file

@ -93,7 +93,7 @@ obj-$(CONFIG_OLPC) += olpc.o
###
# 64 bit specific files
ifeq ($(CONFIG_X86_64),y)
obj-y += genapic_64.o genapic_flat_64.o genx2apic_uv_x.o
obj-y += genapic_64.o genapic_flat_64.o genx2apic_uv_x.o tlb_uv.o
obj-$(CONFIG_X86_PM_TIMER) += pmtimer_64.o
obj-$(CONFIG_AUDIT) += audit_64.o

2
arch/x86/kernel/apic_32.c
View file

@ -1267,7 +1267,7 @@ int __init APIC_init_uniprocessor(void)
#ifdef CONFIG_CRASH_DUMP
boot_cpu_physical_apicid = GET_APIC_ID(read_apic_id());
#endif
phys_cpu_present_map = physid_mask_of_physid(boot_cpu_physical_apicid);
physid_set_mask_of_physid(boot_cpu_physical_apicid, &phys_cpu_present_map);
setup_local_APIC();

2
arch/x86/kernel/apic_64.c
View file

@ -918,7 +918,7 @@ int __init APIC_init_uniprocessor(void)
verify_local_APIC();
phys_cpu_present_map = physid_mask_of_physid(boot_cpu_physical_apicid);
physid_set_mask_of_physid(boot_cpu_physical_apicid, &phys_cpu_present_map);
apic_write(APIC_ID, SET_APIC_ID(boot_cpu_physical_apicid));
setup_local_APIC();

4
arch/x86/kernel/entry_64.S
View file

@ -719,6 +719,10 @@ ENTRY(apic_timer_interrupt)
apicinterrupt LOCAL_TIMER_VECTOR,smp_apic_timer_interrupt
END(apic_timer_interrupt)
ENTRY(uv_bau_message_intr1)
apicinterrupt 220,uv_bau_message_interrupt
END(uv_bau_message_intr1)
ENTRY(error_interrupt)
apicinterrupt ERROR_APIC_VECTOR,smp_error_interrupt
END(error_interrupt)

5
arch/x86/kernel/smpboot.c
View file

@ -1090,10 +1090,9 @@ static __init void disable_smp(void)
smpboot_clear_io_apic_irqs();
#endif
if (smp_found_config)
phys_cpu_present_map =
physid_mask_of_physid(boot_cpu_physical_apicid);
physid_set_mask_of_physid(boot_cpu_physical_apicid, &phys_cpu_present_map);
else
phys_cpu_present_map = physid_mask_of_physid(0);
physid_set_mask_of_physid(0, &phys_cpu_present_map);
map_cpu_to_logical_apicid();
cpu_set(0, per_cpu(cpu_sibling_map, 0));
cpu_set(0, per_cpu(cpu_core_map, 0));

5
arch/x86/kernel/tlb_64.c
View file

@ -15,6 +15,8 @@
#include <asm/proto.h>
#include <asm/apicdef.h>
#include <asm/idle.h>
#include <asm/uv/uv_hub.h>
#include <asm/uv/uv_bau.h>
#include <mach_ipi.h>
/*
@ -162,6 +164,9 @@ void native_flush_tlb_others(const cpumask_t *cpumaskp, struct mm_struct *mm,
union smp_flush_state *f;
cpumask_t cpumask = *cpumaskp;
if (is_uv_system() && uv_flush_tlb_others(&cpumask, mm, va))
return;
/* Caller has disabled preemption */
sender = smp_processor_id() % NUM_INVALIDATE_TLB_VECTORS;
f = &per_cpu(flush_state, sender);

792
arch/x86/kernel/tlb_uv.c Normal file
View file

@ -0,0 +1,792 @@
/*
* SGI UltraViolet TLB flush routines.
*
* (c) 2008 Cliff Wickman <cpw@sgi.com>, SGI.
*
* This code is released under the GNU General Public License version 2 or
* later.
*/
#include <linux/mc146818rtc.h>
#include <linux/proc_fs.h>
#include <linux/kernel.h>
#include <asm/mmu_context.h>
#include <asm/uv/uv_mmrs.h>
#include <asm/uv/uv_hub.h>
#include <asm/uv/uv_bau.h>
#include <asm/genapic.h>
#include <asm/idle.h>
#include <asm/tsc.h>
#include <mach_apic.h>
static struct bau_control **uv_bau_table_bases __read_mostly;
static int uv_bau_retry_limit __read_mostly;
/* position of pnode (which is nasid>>1): */
static int uv_nshift __read_mostly;
static unsigned long uv_mmask __read_mostly;
static DEFINE_PER_CPU(struct ptc_stats, ptcstats);
static DEFINE_PER_CPU(struct bau_control, bau_control);
/*
* Free a software acknowledge hardware resource by clearing its Pending
* bit. This will return a reply to the sender.
* If the message has timed out, a reply has already been sent by the
* hardware but the resource has not been released. In that case our
* clear of the Timeout bit (as well) will free the resource. No reply will
* be sent (the hardware will only do one reply per message).
*/
static void uv_reply_to_message(int resource,
struct bau_payload_queue_entry *msg,
struct bau_msg_status *msp)
{
unsigned long dw;
dw = (1 << (resource + UV_SW_ACK_NPENDING)) | (1 << resource);
msg->replied_to = 1;
msg->sw_ack_vector = 0;
if (msp)
msp->seen_by.bits = 0;
uv_write_local_mmr(UVH_LB_BAU_INTD_SOFTWARE_ACKNOWLEDGE_ALIAS, dw);
}
/*
* Do all the things a cpu should do for a TLB shootdown message.
* Other cpu's may come here at the same time for this message.
*/
static void uv_bau_process_message(struct bau_payload_queue_entry *msg,
int msg_slot, int sw_ack_slot)
{
unsigned long this_cpu_mask;
struct bau_msg_status *msp;
int cpu;
msp = __get_cpu_var(bau_control).msg_statuses + msg_slot;
cpu = uv_blade_processor_id();
msg->number_of_cpus =
uv_blade_nr_online_cpus(uv_node_to_blade_id(numa_node_id()));
this_cpu_mask = 1UL << cpu;
if (msp->seen_by.bits & this_cpu_mask)
return;
atomic_or_long(&msp->seen_by.bits, this_cpu_mask);
if (msg->replied_to == 1)
return;
if (msg->address == TLB_FLUSH_ALL) {
local_flush_tlb();
__get_cpu_var(ptcstats).alltlb++;
} else {
__flush_tlb_one(msg->address);
__get_cpu_var(ptcstats).onetlb++;
}
__get_cpu_var(ptcstats).requestee++;
atomic_inc_short(&msg->acknowledge_count);
if (msg->number_of_cpus == msg->acknowledge_count)
uv_reply_to_message(sw_ack_slot, msg, msp);
}
/*
* Examine the payload queue on one distribution node to see
* which messages have not been seen, and which cpu(s) have not seen them.
*
* Returns the number of cpu's that have not responded.
*/
static int uv_examine_destination(struct bau_control *bau_tablesp, int sender)
{
struct bau_payload_queue_entry *msg;
struct bau_msg_status *msp;
int count = 0;
int i;
int j;
for (msg = bau_tablesp->va_queue_first, i = 0; i < DEST_Q_SIZE;
msg++, i++) {
if ((msg->sending_cpu == sender) && (!msg->replied_to)) {
msp = bau_tablesp->msg_statuses + i;
printk(KERN_DEBUG
"blade %d: address:%#lx %d of %d, not cpu(s): ",
i, msg->address, msg->acknowledge_count,
msg->number_of_cpus);
for (j = 0; j < msg->number_of_cpus; j++) {
if (!((1L << j) & msp->seen_by.bits)) {
count++;
printk("%d ", j);
}
}
printk("\n");
}
}
return count;
}
/*
* Examine the payload queue on all the distribution nodes to see
* which messages have not been seen, and which cpu(s) have not seen them.
*
* Returns the number of cpu's that have not responded.
*/
static int uv_examine_destinations(struct bau_target_nodemask *distribution)
{
int sender;
int i;
int count = 0;
sender = smp_processor_id();
for (i = 0; i < sizeof(struct bau_target_nodemask) * BITSPERBYTE; i++) {
if (!bau_node_isset(i, distribution))
continue;
count += uv_examine_destination(uv_bau_table_bases[i], sender);
}
return count;
}
/*
* wait for completion of a broadcast message
*
* return COMPLETE, RETRY or GIVEUP
*/
static int uv_wait_completion(struct bau_desc *bau_desc,
unsigned long mmr_offset, int right_shift)
{
int exams = 0;
long destination_timeouts = 0;
long source_timeouts = 0;
unsigned long descriptor_status;
while ((descriptor_status = (((unsigned long)
uv_read_local_mmr(mmr_offset) >>
right_shift) & UV_ACT_STATUS_MASK)) !=
DESC_STATUS_IDLE) {
if (descriptor_status == DESC_STATUS_SOURCE_TIMEOUT) {
source_timeouts++;
if (source_timeouts > SOURCE_TIMEOUT_LIMIT)
source_timeouts = 0;
__get_cpu_var(ptcstats).s_retry++;
return FLUSH_RETRY;
}
/*
* spin here looking for progress at the destinations
*/
if (descriptor_status == DESC_STATUS_DESTINATION_TIMEOUT) {
destination_timeouts++;
if (destination_timeouts > DESTINATION_TIMEOUT_LIMIT) {
/*
* returns number of cpus not responding
*/
if (uv_examine_destinations
(&bau_desc->distribution) == 0) {
__get_cpu_var(ptcstats).d_retry++;
return FLUSH_RETRY;
}
exams++;
if (exams >= uv_bau_retry_limit) {
printk(KERN_DEBUG
"uv_flush_tlb_others");
printk("giving up on cpu %d\n",
smp_processor_id());
return FLUSH_GIVEUP;
}
/*
* delays can hang the simulator
udelay(1000);
*/
destination_timeouts = 0;
}
}
}
return FLUSH_COMPLETE;
}
/**
* uv_flush_send_and_wait
*
* Send a broadcast and wait for a broadcast message to complete.
*
* The cpumaskp mask contains the cpus the broadcast was sent to.
*
* Returns 1 if all remote flushing was done. The mask is zeroed.
* Returns 0 if some remote flushing remains to be done. The mask is left
* unchanged.
*/
int uv_flush_send_and_wait(int cpu, int this_blade, struct bau_desc *bau_desc,
cpumask_t *cpumaskp)
{
int completion_status = 0;
int right_shift;
int tries = 0;
int blade;
int bit;
unsigned long mmr_offset;
unsigned long index;
cycles_t time1;
cycles_t time2;
if (cpu < UV_CPUS_PER_ACT_STATUS) {
mmr_offset = UVH_LB_BAU_SB_ACTIVATION_STATUS_0;
right_shift = cpu * UV_ACT_STATUS_SIZE;
} else {
mmr_offset = UVH_LB_BAU_SB_ACTIVATION_STATUS_1;
right_shift =
((cpu - UV_CPUS_PER_ACT_STATUS) * UV_ACT_STATUS_SIZE);
}
time1 = get_cycles();
do {
tries++;
index = (1UL << UVH_LB_BAU_SB_ACTIVATION_CONTROL_PUSH_SHFT) |
cpu;
uv_write_local_mmr(UVH_LB_BAU_SB_ACTIVATION_CONTROL, index);
completion_status = uv_wait_completion(bau_desc, mmr_offset,
right_shift);
} while (completion_status == FLUSH_RETRY);
time2 = get_cycles();
__get_cpu_var(ptcstats).sflush += (time2 - time1);
if (tries > 1)
__get_cpu_var(ptcstats).retriesok++;
if (completion_status == FLUSH_GIVEUP) {
/*
* Cause the caller to do an IPI-style TLB shootdown on
* the cpu's, all of which are still in the mask.
*/
__get_cpu_var(ptcstats).ptc_i++;
return 0;
}
/*
* Success, so clear the remote cpu's from the mask so we don't
* use the IPI method of shootdown on them.
*/
for_each_cpu_mask(bit, *cpumaskp) {
blade = uv_cpu_to_blade_id(bit);
if (blade == this_blade)
continue;
cpu_clear(bit, *cpumaskp);
}
if (!cpus_empty(*cpumaskp))
return 0;
return 1;
}
/**
* uv_flush_tlb_others - globally purge translation cache of a virtual
* address or all TLB's
* @cpumaskp: mask of all cpu's in which the address is to be removed
* @mm: mm_struct containing virtual address range
* @va: virtual address to be removed (or TLB_FLUSH_ALL for all TLB's on cpu)
*
* This is the entry point for initiating any UV global TLB shootdown.
*
* Purges the translation caches of all specified processors of the given
* virtual address, or purges all TLB's on specified processors.
*
* The caller has derived the cpumaskp from the mm_struct and has subtracted
* the local cpu from the mask. This function is called only if there
* are bits set in the mask. (e.g. flush_tlb_page())
*
* The cpumaskp is converted into a nodemask of the nodes containing
* the cpus.
*
* Returns 1 if all remote flushing was done.
* Returns 0 if some remote flushing remains to be done.
*/
int uv_flush_tlb_others(cpumask_t *cpumaskp, struct mm_struct *mm,
unsigned long va)
{
int i;
int bit;
int blade;
int cpu;
int this_blade;
int locals = 0;
struct bau_desc *bau_desc;
cpu = uv_blade_processor_id();
this_blade = uv_numa_blade_id();
bau_desc = __get_cpu_var(bau_control).descriptor_base;
bau_desc += UV_ITEMS_PER_DESCRIPTOR * cpu;
bau_nodes_clear(&bau_desc->distribution, UV_DISTRIBUTION_SIZE);
i = 0;
for_each_cpu_mask(bit, *cpumaskp) {
blade = uv_cpu_to_blade_id(bit);
BUG_ON(blade > (UV_DISTRIBUTION_SIZE - 1));
if (blade == this_blade) {
locals++;
continue;
}
bau_node_set(blade, &bau_desc->distribution);
i++;
}
if (i == 0) {
/*
* no off_node flushing; return status for local node
*/
if (locals)
return 0;
else
return 1;
}
__get_cpu_var(ptcstats).requestor++;
__get_cpu_var(ptcstats).ntargeted += i;
bau_desc->payload.address = va;
bau_desc->payload.sending_cpu = smp_processor_id();
return uv_flush_send_and_wait(cpu, this_blade, bau_desc, cpumaskp);
}
/*
* The BAU message interrupt comes here. (registered by set_intr_gate)
* See entry_64.S
*
* We received a broadcast assist message.
*
* Interrupts may have been disabled; this interrupt could represent
* the receipt of several messages.
*
* All cores/threads on this node get this interrupt.
* The last one to see it does the s/w ack.
* (the resource will not be freed until noninterruptable cpus see this
* interrupt; hardware will timeout the s/w ack and reply ERROR)
*/
void uv_bau_message_interrupt(struct pt_regs *regs)
{
struct bau_payload_queue_entry *va_queue_first;
struct bau_payload_queue_entry *va_queue_last;
struct bau_payload_queue_entry *msg;
struct pt_regs *old_regs = set_irq_regs(regs);
cycles_t time1;
cycles_t time2;
int msg_slot;
int sw_ack_slot;
int fw;
int count = 0;
unsigned long local_pnode;
ack_APIC_irq();
exit_idle();
irq_enter();
time1 = get_cycles();
local_pnode = uv_blade_to_pnode(uv_numa_blade_id());
va_queue_first = __get_cpu_var(bau_control).va_queue_first;
va_queue_last = __get_cpu_var(bau_control).va_queue_last;
msg = __get_cpu_var(bau_control).bau_msg_head;
while (msg->sw_ack_vector) {
count++;
fw = msg->sw_ack_vector;
msg_slot = msg - va_queue_first;
sw_ack_slot = ffs(fw) - 1;
uv_bau_process_message(msg, msg_slot, sw_ack_slot);
msg++;
if (msg > va_queue_last)
msg = va_queue_first;
__get_cpu_var(bau_control).bau_msg_head = msg;
}
if (!count)
__get_cpu_var(ptcstats).nomsg++;
else if (count > 1)
__get_cpu_var(ptcstats).multmsg++;
time2 = get_cycles();
__get_cpu_var(ptcstats).dflush += (time2 - time1);
irq_exit();
set_irq_regs(old_regs);
}
static void uv_enable_timeouts(void)
{
int i;
int blade;
int last_blade;
int pnode;
int cur_cpu = 0;
unsigned long apicid;
last_blade = -1;
for_each_online_node(i) {
blade = uv_node_to_blade_id(i);
if (blade == last_blade)
continue;
last_blade = blade;
apicid = per_cpu(x86_cpu_to_apicid, cur_cpu);
pnode = uv_blade_to_pnode(blade);
cur_cpu += uv_blade_nr_possible_cpus(i);
}
}
static void *uv_ptc_seq_start(struct seq_file *file, loff_t *offset)
{
if (*offset < num_possible_cpus())
return offset;
return NULL;
}
static void *uv_ptc_seq_next(struct seq_file *file, void *data, loff_t *offset)
{
(*offset)++;
if (*offset < num_possible_cpus())
return offset;
return NULL;
}
static void uv_ptc_seq_stop(struct seq_file *file, void *data)
{
}
/*
* Display the statistics thru /proc
* data points to the cpu number
*/
static int uv_ptc_seq_show(struct seq_file *file, void *data)
{
struct ptc_stats *stat;
int cpu;
cpu = *(loff_t *)data;
if (!cpu) {
seq_printf(file,
"# cpu requestor requestee one all sretry dretry ptc_i ");
seq_printf(file,
"sw_ack sflush dflush sok dnomsg dmult starget\n");
}
if (cpu < num_possible_cpus() && cpu_online(cpu)) {
stat = &per_cpu(ptcstats, cpu);
seq_printf(file, "cpu %d %ld %ld %ld %ld %ld %ld %ld ",
cpu, stat->requestor,
stat->requestee, stat->onetlb, stat->alltlb,
stat->s_retry, stat->d_retry, stat->ptc_i);
seq_printf(file, "%lx %ld %ld %ld %ld %ld %ld\n",
uv_read_global_mmr64(uv_blade_to_pnode
(uv_cpu_to_blade_id(cpu)),
UVH_LB_BAU_INTD_SOFTWARE_ACKNOWLEDGE),
stat->sflush, stat->dflush,
stat->retriesok, stat->nomsg,
stat->multmsg, stat->ntargeted);
}
return 0;
}
/*
* 0: display meaning of the statistics
* >0: retry limit
*/
static ssize_t uv_ptc_proc_write(struct file *file, const char __user *user,
size_t count, loff_t *data)
{
long newmode;
char optstr[64];
if (count == 0 || count > sizeof(optstr))
return -EINVAL;
if (copy_from_user(optstr, user, count))
return -EFAULT;
optstr[count - 1] = '\0';
if (strict_strtoul(optstr, 10, &newmode) < 0) {
printk(KERN_DEBUG "%s is invalid\n", optstr);
return -EINVAL;
}
if (newmode == 0) {
printk(KERN_DEBUG "# cpu: cpu number\n");
printk(KERN_DEBUG
"requestor: times this cpu was the flush requestor\n");
printk(KERN_DEBUG
"requestee: times this cpu was requested to flush its TLBs\n");
printk(KERN_DEBUG
"one: times requested to flush a single address\n");
printk(KERN_DEBUG
"all: times requested to flush all TLB's\n");
printk(KERN_DEBUG
"sretry: number of retries of source-side timeouts\n");
printk(KERN_DEBUG
"dretry: number of retries of destination-side timeouts\n");
printk(KERN_DEBUG
"ptc_i: times UV fell through to IPI-style flushes\n");
printk(KERN_DEBUG
"sw_ack: image of UVH_LB_BAU_INTD_SOFTWARE_ACKNOWLEDGE\n");
printk(KERN_DEBUG
"sflush_us: cycles spent in uv_flush_tlb_others()\n");
printk(KERN_DEBUG
"dflush_us: cycles spent in handling flush requests\n");
printk(KERN_DEBUG "sok: successes on retry\n");
printk(KERN_DEBUG "dnomsg: interrupts with no message\n");
printk(KERN_DEBUG
"dmult: interrupts with multiple messages\n");
printk(KERN_DEBUG "starget: nodes targeted\n");
} else {
uv_bau_retry_limit = newmode;
printk(KERN_DEBUG "timeout retry limit:%d\n",
uv_bau_retry_limit);
}
return count;
}
static const struct seq_operations uv_ptc_seq_ops = {
.start = uv_ptc_seq_start,
.next = uv_ptc_seq_next,
.stop = uv_ptc_seq_stop,
.show = uv_ptc_seq_show
};
static int uv_ptc_proc_open(struct inode *inode, struct file *file)
{
return seq_open(file, &uv_ptc_seq_ops);
}
static const struct file_operations proc_uv_ptc_operations = {
.open = uv_ptc_proc_open,
.read = seq_read,
.write = uv_ptc_proc_write,
.llseek = seq_lseek,
.release = seq_release,
};
static int __init uv_ptc_init(void)
{
struct proc_dir_entry *proc_uv_ptc;
if (!is_uv_system())
return 0;
if (!proc_mkdir("sgi_uv", NULL))
return -EINVAL;
proc_uv_ptc = create_proc_entry(UV_PTC_BASENAME, 0444, NULL);
if (!proc_uv_ptc) {
printk(KERN_ERR "unable to create %s proc entry\n",
UV_PTC_BASENAME);
remove_proc_entry("sgi_uv", NULL);
return -EINVAL;
}
proc_uv_ptc->proc_fops = &proc_uv_ptc_operations;
return 0;
}
/*
* begin the initialization of the per-blade control structures
*/
static struct bau_control * __init uv_table_bases_init(int blade, int node)
{
int i;
int *ip;
struct bau_msg_status *msp;
struct bau_control *bau_tabp;
bau_tabp =
kmalloc_node(sizeof(struct bau_control), GFP_KERNEL, node);
BUG_ON(!bau_tabp);
bau_tabp->msg_statuses =
kmalloc_node(sizeof(struct bau_msg_status) *
DEST_Q_SIZE, GFP_KERNEL, node);
BUG_ON(!bau_tabp->msg_statuses);
for (i = 0, msp = bau_tabp->msg_statuses; i < DEST_Q_SIZE; i++, msp++)
bau_cpubits_clear(&msp->seen_by, (int)
uv_blade_nr_possible_cpus(blade));
bau_tabp->watching =
kmalloc_node(sizeof(int) * DEST_NUM_RESOURCES, GFP_KERNEL, node);
BUG_ON(!bau_tabp->watching);
for (i = 0, ip = bau_tabp->watching; i < DEST_Q_SIZE; i++, ip++)
*ip = 0;
uv_bau_table_bases[blade] = bau_tabp;
return bau_tabp;
}
/*
* finish the initialization of the per-blade control structures
*/
static void __init
uv_table_bases_finish(int blade, int node, int cur_cpu,
struct bau_control *bau_tablesp,
struct bau_desc *adp)
{
struct bau_control *bcp;
int i;
for (i = cur_cpu; i < cur_cpu + uv_blade_nr_possible_cpus(blade); i++) {
bcp = (struct bau_control *)&per_cpu(bau_control, i);
bcp->bau_msg_head = bau_tablesp->va_queue_first;
bcp->va_queue_first = bau_tablesp->va_queue_first;
bcp->va_queue_last = bau_tablesp->va_queue_last;
bcp->watching = bau_tablesp->watching;
bcp->msg_statuses = bau_tablesp->msg_statuses;
bcp->descriptor_base = adp;
}
}
/*
* initialize the sending side's sending buffers
*/
static struct bau_desc * __init
uv_activation_descriptor_init(int node, int pnode)
{
int i;
unsigned long pa;
unsigned long m;
unsigned long n;
unsigned long mmr_image;
struct bau_desc *adp;
struct bau_desc *ad2;
adp = (struct bau_desc *)
kmalloc_node(16384, GFP_KERNEL, node);
BUG_ON(!adp);
pa = __pa((unsigned long)adp);
n = pa >> uv_nshift;
m = pa & uv_mmask;
mmr_image = uv_read_global_mmr64(pnode, UVH_LB_BAU_SB_DESCRIPTOR_BASE);
if (mmr_image) {
uv_write_global_mmr64(pnode, (unsigned long)
UVH_LB_BAU_SB_DESCRIPTOR_BASE,
(n << UV_DESC_BASE_PNODE_SHIFT | m));
}
for (i = 0, ad2 = adp; i < UV_ACTIVATION_DESCRIPTOR_SIZE; i++, ad2++) {
memset(ad2, 0, sizeof(struct bau_desc));
ad2->header.sw_ack_flag = 1;
ad2->header.base_dest_nodeid =
uv_blade_to_pnode(uv_cpu_to_blade_id(0));
ad2->header.command = UV_NET_ENDPOINT_INTD;
ad2->header.int_both = 1;
/*
* all others need to be set to zero:
* fairness chaining multilevel count replied_to
*/
}
return adp;
}
/*
* initialize the destination side's receiving buffers
*/
static struct bau_payload_queue_entry * __init
uv_payload_queue_init(int node, int pnode, struct bau_control *bau_tablesp)
{
struct bau_payload_queue_entry *pqp;
char *cp;
pqp = (struct bau_payload_queue_entry *) kmalloc_node(
(DEST_Q_SIZE + 1) * sizeof(struct bau_payload_queue_entry),
GFP_KERNEL, node);
BUG_ON(!pqp);
cp = (char *)pqp + 31;
pqp = (struct bau_payload_queue_entry *)(((unsigned long)cp >> 5) << 5);
bau_tablesp->va_queue_first = pqp;
uv_write_global_mmr64(pnode,
UVH_LB_BAU_INTD_PAYLOAD_QUEUE_FIRST,
((unsigned long)pnode <<
UV_PAYLOADQ_PNODE_SHIFT) |
uv_physnodeaddr(pqp));
uv_write_global_mmr64(pnode, UVH_LB_BAU_INTD_PAYLOAD_QUEUE_TAIL,
uv_physnodeaddr(pqp));
bau_tablesp->va_queue_last = pqp + (DEST_Q_SIZE - 1);
uv_write_global_mmr64(pnode, UVH_LB_BAU_INTD_PAYLOAD_QUEUE_LAST,
(unsigned long)
uv_physnodeaddr(bau_tablesp->va_queue_last));
memset(pqp, 0, sizeof(struct bau_payload_queue_entry) * DEST_Q_SIZE);
return pqp;
}
/*
* Initialization of each UV blade's structures
*/
static int __init uv_init_blade(int blade, int node, int cur_cpu)
{
int pnode;
unsigned long pa;
unsigned long apicid;
struct bau_desc *adp;
struct bau_payload_queue_entry *pqp;
struct bau_control *bau_tablesp;
bau_tablesp = uv_table_bases_init(blade, node);
pnode = uv_blade_to_pnode(blade);
adp = uv_activation_descriptor_init(node, pnode);
pqp = uv_payload_queue_init(node, pnode, bau_tablesp);
uv_table_bases_finish(blade, node, cur_cpu, bau_tablesp, adp);
/*
* the below initialization can't be in firmware because the
* messaging IRQ will be determined by the OS
*/
apicid = per_cpu(x86_cpu_to_apicid, cur_cpu);
pa = uv_read_global_mmr64(pnode, UVH_BAU_DATA_CONFIG);
if ((pa & 0xff) != UV_BAU_MESSAGE) {
uv_write_global_mmr64(pnode, UVH_BAU_DATA_CONFIG,
((apicid << 32) | UV_BAU_MESSAGE));
}
return 0;
}
/*
* Initialization of BAU-related structures
*/
static int __init uv_bau_init(void)
{
int blade;
int node;
int nblades;
int last_blade;
int cur_cpu = 0;
if (!is_uv_system())
return 0;
uv_bau_retry_limit = 1;
uv_nshift = uv_hub_info->n_val;
uv_mmask = (1UL << uv_hub_info->n_val) - 1;
nblades = 0;
last_blade = -1;
for_each_online_node(node) {
blade = uv_node_to_blade_id(node);
if (blade == last_blade)
continue;
last_blade = blade;
nblades++;
}
uv_bau_table_bases = (struct bau_control **)
kmalloc(nblades * sizeof(struct bau_control *), GFP_KERNEL);
BUG_ON(!uv_bau_table_bases);
last_blade = -1;
for_each_online_node(node) {
blade = uv_node_to_blade_id(node);
if (blade == last_blade)
continue;
last_blade = blade;
uv_init_blade(blade, node, cur_cpu);
cur_cpu += uv_blade_nr_possible_cpus(blade);
}
set_intr_gate(UV_BAU_MESSAGE, uv_bau_message_intr1);
uv_enable_timeouts();
return 0;
}
__initcall(uv_bau_init);
__initcall(uv_ptc_init);

26
include/asm-x86/atomic_64.h
View file

@ -425,6 +425,32 @@ static inline int atomic64_add_unless(atomic64_t *v, long a, long u)
return c != (u);
}
/**
* atomic_inc_short - increment of a short integer
* @v: pointer to type int
*
* Atomically adds 1 to @v
* Returns the new value of @u
*/
static inline short int atomic_inc_short(short int *v)
{
asm(LOCK_PREFIX "addw $1, %0" : "+m" (*v));
return *v;
}
/**
* atomic_or_long - OR of two long integers
* @v1: pointer to type unsigned long
* @v2: pointer to type unsigned long
*
* Atomically ORs @v1 and @v2
* Returns the result of the OR
*/
static inline void atomic_or_long(unsigned long *v1, unsigned long v2)
{
asm(LOCK_PREFIX "orq %1, %0" : "+m" (*v1) : "r" (v2));
}
#define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0)
/* These are x86-specific, used by some header files */

7
include/asm-x86/mpspec.h
View file

@ -122,6 +122,7 @@ typedef struct physid_mask physid_mask_t;
__physid_mask; \
})
/* Note: will create very large stack frames if physid_mask_t is big */
#define physid_mask_of_physid(physid) \
({ \
physid_mask_t __physid_mask = PHYSID_MASK_NONE; \
@ -129,6 +130,12 @@ typedef struct physid_mask physid_mask_t;
__physid_mask; \
})
static inline void physid_set_mask_of_physid(int physid, physid_mask_t *map)
{
physids_clear(*map);
physid_set(physid, *map);
}
#define PHYSID_MASK_ALL { {[0 ... PHYSID_ARRAY_SIZE-1] = ~0UL} }
#define PHYSID_MASK_NONE { {[0 ... PHYSID_ARRAY_SIZE-1] = 0UL} }

9
include/asm-x86/mpspec_def.h
View file

@ -17,10 +17,11 @@
# define MAX_MPC_ENTRY 1024
# define MAX_APICS 256
#else
/*
* A maximum of 255 APICs with the current APIC ID architecture.
*/
# define MAX_APICS 255
# if NR_CPUS <= 255
# define MAX_APICS 255
# else
# define MAX_APICS 32768
# endif
#endif
struct intel_mp_floating {

337
include/asm-x86/uv/uv_bau.h Normal file
View file

@ -0,0 +1,337 @@
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* SGI UV Broadcast Assist Unit definitions
*
* Copyright (C) 2008 Silicon Graphics, Inc. All rights reserved.
*/
#ifndef __ASM_X86_UV_BAU__
#define __ASM_X86_UV_BAU__
#include <linux/bitmap.h>
#define BITSPERBYTE 8
/*
* Broadcast Assist Unit messaging structures
*
* Selective Broadcast activations are induced by software action
* specifying a particular 8-descriptor "set" via a 6-bit index written
* to an MMR.
* Thus there are 64 unique 512-byte sets of SB descriptors - one set for
* each 6-bit index value. These descriptor sets are mapped in sequence
* starting with set 0 located at the address specified in the
* BAU_SB_DESCRIPTOR_BASE register, set 1 is located at BASE + 512,
* set 2 is at BASE + 2*512, set 3 at BASE + 3*512, and so on.
*
* We will use 31 sets, one for sending BAU messages from each of the 32
* cpu's on the node.
*
* TLB shootdown will use the first of the 8 descriptors of each set.
* Each of the descriptors is 64 bytes in size (8*64 = 512 bytes in a set).
*/
#define UV_ITEMS_PER_DESCRIPTOR 8
#define UV_CPUS_PER_ACT_STATUS 32
#define UV_ACT_STATUS_MASK 0x3
#define UV_ACT_STATUS_SIZE 2
#define UV_ACTIVATION_DESCRIPTOR_SIZE 32
#define UV_DISTRIBUTION_SIZE 256
#define UV_SW_ACK_NPENDING 8
#define UV_BAU_MESSAGE 200
/*
* Messaging irq; see irq_64.h and include/asm-x86/hw_irq_64.h
* To be dynamically allocated in the future
*/
#define UV_NET_ENDPOINT_INTD 0x38
#define UV_DESC_BASE_PNODE_SHIFT 49
#define UV_PAYLOADQ_PNODE_SHIFT 49
#define UV_PTC_BASENAME "sgi_uv/ptc_statistics"
#define uv_physnodeaddr(x) ((__pa((unsigned long)(x)) & uv_mmask))
/*
* bits in UVH_LB_BAU_SB_ACTIVATION_STATUS_0/1
*/
#define DESC_STATUS_IDLE 0
#define DESC_STATUS_ACTIVE 1
#define DESC_STATUS_DESTINATION_TIMEOUT 2
#define DESC_STATUS_SOURCE_TIMEOUT 3
/*
* source side threshholds at which message retries print a warning
*/
#define SOURCE_TIMEOUT_LIMIT 20
#define DESTINATION_TIMEOUT_LIMIT 20
/*
* number of entries in the destination side payload queue
*/
#define DEST_Q_SIZE 17
/*
* number of destination side software ack resources
*/
#define DEST_NUM_RESOURCES 8
#define MAX_CPUS_PER_NODE 32
/*
* completion statuses for sending a TLB flush message
*/
#define FLUSH_RETRY 1
#define FLUSH_GIVEUP 2
#define FLUSH_COMPLETE 3
/*
* Distribution: 32 bytes (256 bits) (bytes 0-0x1f of descriptor)
* If the 'multilevel' flag in the header portion of the descriptor
* has been set to 0, then endpoint multi-unicast mode is selected.
* The distribution specification (32 bytes) is interpreted as a 256-bit
* distribution vector. Adjacent bits correspond to consecutive even numbered
* nodeIDs. The result of adding the index of a given bit to the 15-bit
* 'base_dest_nodeid' field of the header corresponds to the
* destination nodeID associated with that specified bit.
*/
struct bau_target_nodemask {
unsigned long bits[BITS_TO_LONGS(256)];
};
/*
* mask of cpu's on a node
* (during initialization we need to check that unsigned long has
* enough bits for max. cpu's per node)
*/
struct bau_local_cpumask {
unsigned long bits;
};
/*
* Payload: 16 bytes (128 bits) (bytes 0x20-0x2f of descriptor)
* only 12 bytes (96 bits) of the payload area are usable.
* An additional 3 bytes (bits 27:4) of the header address are carried
* to the next bytes of the destination payload queue.
* And an additional 2 bytes of the header Suppl_A field are also
* carried to the destination payload queue.
* But the first byte of the Suppl_A becomes bits 127:120 (the 16th byte)
* of the destination payload queue, which is written by the hardware
* with the s/w ack resource bit vector.
* [ effective message contents (16 bytes (128 bits) maximum), not counting
* the s/w ack bit vector ]
*/
/*
* The payload is software-defined for INTD transactions
*/
struct bau_msg_payload {
unsigned long address; /* signifies a page or all TLB's
of the cpu */
/* 64 bits */
unsigned short sending_cpu; /* filled in by sender */
/* 16 bits */
unsigned short acknowledge_count;/* filled in by destination */
/* 16 bits */
unsigned int reserved1:32; /* not usable */
};
/*
* Message header: 16 bytes (128 bits) (bytes 0x30-0x3f of descriptor)
* see table 4.2.3.0.1 in broacast_assist spec.
*/
struct bau_msg_header {
int dest_subnodeid:6; /* must be zero */
/* bits 5:0 */
int base_dest_nodeid:15; /* nasid>>1 (pnode) of first bit in node_map */
/* bits 20:6 */
int command:8; /* message type */
/* bits 28:21 */
/* 0x38: SN3net EndPoint Message */
int rsvd_1:3; /* must be zero */
/* bits 31:29 */
/* int will align on 32 bits */
int rsvd_2:9; /* must be zero */
/* bits 40:32 */
/* Suppl_A is 56-41 */
int payload_2a:8; /* becomes byte 16 of msg */
/* bits 48:41 */ /* not currently using */
int payload_2b:8; /* becomes byte 17 of msg */
/* bits 56:49 */ /* not currently using */
/* Address field (96:57) is never used as an
address (these are address bits 42:3) */
int rsvd_3:1; /* must be zero */
/* bit 57 */
/* address bits 27:4 are payload */
/* these 24 bits become bytes 12-14 of msg */
int replied_to:1; /* sent as 0 by the source to byte 12 */
/* bit 58 */
int payload_1a:5; /* not currently used */
/* bits 63:59 */
int payload_1b:8; /* not currently used */
/* bits 71:64 */
int payload_1c:8; /* not currently used */
/* bits 79:72 */
int payload_1d:2; /* not currently used */
/* bits 81:80 */
int rsvd_4:7; /* must be zero */
/* bits 88:82 */
int sw_ack_flag:1; /* software acknowledge flag */
/* bit 89 */
/* INTD trasactions at destination are to
wait for software acknowledge */
int rsvd_5:6; /* must be zero */
/* bits 95:90 */
int rsvd_6:5; /* must be zero */
/* bits 100:96 */
int int_both:1; /* if 1, interrupt both sockets on the blade */
/* bit 101*/
int fairness:3; /* usually zero */
/* bits 104:102 */
int multilevel:1; /* multi-level multicast format */
/* bit 105 */
/* 0 for TLB: endpoint multi-unicast messages */
int chaining:1; /* next descriptor is part of this activation*/
/* bit 106 */
int rsvd_7:21; /* must be zero */
/* bits 127:107 */
};
/*
* The activation descriptor:
* The format of the message to send, plus all accompanying control
* Should be 64 bytes
*/
struct bau_desc {
struct bau_target_nodemask distribution;
/*
* message template, consisting of header and payload:
*/
struct bau_msg_header header;
struct bau_msg_payload payload;
};
/*
* -payload-- ---------header------
* bytes 0-11 bits 41-56 bits 58-81
* A B (2) C (3)
*
* A/B/C are moved to:
* A C B
* bytes 0-11 bytes 12-14 bytes 16-17 (byte 15 filled in by hw as vector)
* ------------payload queue-----------
*/
/*
* The payload queue on the destination side is an array of these.
* With BAU_MISC_CONTROL set for software acknowledge mode, the messages
* are 32 bytes (2 micropackets) (256 bits) in length, but contain only 17
* bytes of usable data, including the sw ack vector in byte 15 (bits 127:120)
* (12 bytes come from bau_msg_payload, 3 from payload_1, 2 from
* sw_ack_vector and payload_2)
* "Enabling Software Acknowledgment mode (see Section 4.3.3 Software
* Acknowledge Processing) also selects 32 byte (17 bytes usable) payload
* operation."
*/
struct bau_payload_queue_entry {
unsigned long address; /* signifies a page or all TLB's
of the cpu */
/* 64 bits, bytes 0-7 */
unsigned short sending_cpu; /* cpu that sent the message */
/* 16 bits, bytes 8-9 */
unsigned short acknowledge_count; /* filled in by destination */
/* 16 bits, bytes 10-11 */
unsigned short replied_to:1; /* sent as 0 by the source */
/* 1 bit */
unsigned short unused1:7; /* not currently using */
/* 7 bits: byte 12) */
unsigned char unused2[2]; /* not currently using */
/* bytes 13-14 */
unsigned char sw_ack_vector; /* filled in by the hardware */
/* byte 15 (bits 127:120) */
unsigned char unused4[3]; /* not currently using bytes 17-19 */
/* bytes 17-19 */
int number_of_cpus; /* filled in at destination */
/* 32 bits, bytes 20-23 (aligned) */
unsigned char unused5[8]; /* not using */
/* bytes 24-31 */
};
/*
* one for every slot in the destination payload queue
*/
struct bau_msg_status {
struct bau_local_cpumask seen_by; /* map of cpu's */
};
/*
* one for every slot in the destination software ack resources
*/
struct bau_sw_ack_status {
struct bau_payload_queue_entry *msg; /* associated message */
int watcher; /* cpu monitoring, or -1 */
};
/*
* one on every node and per-cpu; to locate the software tables
*/
struct bau_control {
struct bau_desc *descriptor_base;
struct bau_payload_queue_entry *bau_msg_head;
struct bau_payload_queue_entry *va_queue_first;
struct bau_payload_queue_entry *va_queue_last;
struct bau_msg_status *msg_statuses;
int *watching; /* pointer to array */
};
/*
* This structure is allocated per_cpu for UV TLB shootdown statistics.
*/
struct ptc_stats {
unsigned long ptc_i; /* number of IPI-style flushes */
unsigned long requestor; /* number of nodes this cpu sent to */
unsigned long requestee; /* times cpu was remotely requested */
unsigned long alltlb; /* times all tlb's on this cpu were flushed */
unsigned long onetlb; /* times just one tlb on this cpu was flushed */
unsigned long s_retry; /* retries on source side timeouts */
unsigned long d_retry; /* retries on destination side timeouts */
unsigned long sflush; /* cycles spent in uv_flush_tlb_others */
unsigned long dflush; /* cycles spent on destination side */
unsigned long retriesok; /* successes on retries */
unsigned long nomsg; /* interrupts with no message */
unsigned long multmsg; /* interrupts with multiple messages */
unsigned long ntargeted;/* nodes targeted */
};
static inline int bau_node_isset(int node, struct bau_target_nodemask *dstp)
{
return constant_test_bit(node, &dstp->bits[0]);
}
static inline void bau_node_set(int node, struct bau_target_nodemask *dstp)
{
__set_bit(node, &dstp->bits[0]);
}
static inline void bau_nodes_clear(struct bau_target_nodemask *dstp, int nbits)
{
bitmap_zero(&dstp->bits[0], nbits);
}
static inline void bau_cpubits_clear(struct bau_local_cpumask *dstp, int nbits)
{
bitmap_zero(&dstp->bits, nbits);
}
#define cpubit_isset(cpu, bau_local_cpumask) \
test_bit((cpu), (bau_local_cpumask).bits)
extern int uv_flush_tlb_others(cpumask_t *, struct mm_struct *, unsigned long);
extern void uv_bau_message_intr1(void);
extern void uv_bau_timeout_intr1(void);
#endif /* __ASM_X86_UV_BAU__ */