Revision 8ef8286689c6b5bc76212437b85bdd2ba749ee44 authored by Christoph Lameter on 20 February 2007, 21:57:52 UTC, committed by Linus Torvalds on 21 February 2007, 01:10:13 UTC
The alien cache is a per cpu per node array allocated for every slab on the system. Currently we size this array for all nodes that the kernel does support. For IA64 this is 1024 nodes. So we allocate an array with 1024 objects even if we only boot a system with 4 nodes. This patch uses "nr_node_ids" to determine the number of possible nodes supported by a hardware configuration and only allocates an alien cache sized for possible nodes. The initialization of nr_node_ids occurred too late relative to the bootstrap of the slab allocator and so I moved the setup_nr_node_ids() into free_area_init_nodes(). Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent 53b8a31
highlevel.c
/*
* IEEE 1394 for Linux
*
* Copyright (C) 1999 Andreas E. Bombe
*
* This code is licensed under the GPL. See the file COPYING in the root
* directory of the kernel sources for details.
*
*
* Contributions:
*
* Christian Toegel <christian.toegel@gmx.at>
* unregister address space
*
* Manfred Weihs <weihs@ict.tuwien.ac.at>
* unregister address space
*
*/
#include <linux/slab.h>
#include <linux/list.h>
#include <linux/bitops.h>
#include "ieee1394.h"
#include "ieee1394_types.h"
#include "hosts.h"
#include "ieee1394_core.h"
#include "highlevel.h"
#include "nodemgr.h"
struct hl_host_info {
struct list_head list;
struct hpsb_host *host;
size_t size;
unsigned long key;
void *data;
};
static LIST_HEAD(hl_drivers);
static DECLARE_RWSEM(hl_drivers_sem);
static LIST_HEAD(hl_irqs);
static DEFINE_RWLOCK(hl_irqs_lock);
static DEFINE_RWLOCK(addr_space_lock);
/* addr_space list will have zero and max already included as bounds */
static struct hpsb_address_ops dummy_ops = { NULL, NULL, NULL, NULL };
static struct hpsb_address_serve dummy_zero_addr, dummy_max_addr;
static struct hl_host_info *hl_get_hostinfo(struct hpsb_highlevel *hl,
struct hpsb_host *host)
{
struct hl_host_info *hi = NULL;
if (!hl || !host)
return NULL;
read_lock(&hl->host_info_lock);
list_for_each_entry(hi, &hl->host_info_list, list) {
if (hi->host == host) {
read_unlock(&hl->host_info_lock);
return hi;
}
}
read_unlock(&hl->host_info_lock);
return NULL;
}
/* Returns a per host/driver data structure that was previously stored by
* hpsb_create_hostinfo. */
void *hpsb_get_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host)
{
struct hl_host_info *hi = hl_get_hostinfo(hl, host);
return hi ? hi->data : NULL;
}
/* If size is zero, then the return here is only valid for error checking */
void *hpsb_create_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host,
size_t data_size)
{
struct hl_host_info *hi;
void *data;
unsigned long flags;
hi = hl_get_hostinfo(hl, host);
if (hi) {
HPSB_ERR("%s called hpsb_create_hostinfo when hostinfo already"
" exists", hl->name);
return NULL;
}
hi = kzalloc(sizeof(*hi) + data_size, GFP_ATOMIC);
if (!hi)
return NULL;
if (data_size) {
data = hi->data = hi + 1;
hi->size = data_size;
} else
data = hi;
hi->host = host;
write_lock_irqsave(&hl->host_info_lock, flags);
list_add_tail(&hi->list, &hl->host_info_list);
write_unlock_irqrestore(&hl->host_info_lock, flags);
return data;
}
int hpsb_set_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host,
void *data)
{
struct hl_host_info *hi;
hi = hl_get_hostinfo(hl, host);
if (hi) {
if (!hi->size && !hi->data) {
hi->data = data;
return 0;
} else
HPSB_ERR("%s called hpsb_set_hostinfo when hostinfo "
"already has data", hl->name);
} else
HPSB_ERR("%s called hpsb_set_hostinfo when no hostinfo exists",
hl->name);
return -EINVAL;
}
void hpsb_destroy_hostinfo(struct hpsb_highlevel *hl, struct hpsb_host *host)
{
struct hl_host_info *hi;
hi = hl_get_hostinfo(hl, host);
if (hi) {
unsigned long flags;
write_lock_irqsave(&hl->host_info_lock, flags);
list_del(&hi->list);
write_unlock_irqrestore(&hl->host_info_lock, flags);
kfree(hi);
}
return;
}
void hpsb_set_hostinfo_key(struct hpsb_highlevel *hl, struct hpsb_host *host,
unsigned long key)
{
struct hl_host_info *hi;
hi = hl_get_hostinfo(hl, host);
if (hi)
hi->key = key;
return;
}
void *hpsb_get_hostinfo_bykey(struct hpsb_highlevel *hl, unsigned long key)
{
struct hl_host_info *hi;
void *data = NULL;
if (!hl)
return NULL;
read_lock(&hl->host_info_lock);
list_for_each_entry(hi, &hl->host_info_list, list) {
if (hi->key == key) {
data = hi->data;
break;
}
}
read_unlock(&hl->host_info_lock);
return data;
}
static int highlevel_for_each_host_reg(struct hpsb_host *host, void *__data)
{
struct hpsb_highlevel *hl = __data;
hl->add_host(host);
if (host->update_config_rom && hpsb_update_config_rom_image(host) < 0)
HPSB_ERR("Failed to generate Configuration ROM image for host "
"%s-%d", hl->name, host->id);
return 0;
}
void hpsb_register_highlevel(struct hpsb_highlevel *hl)
{
unsigned long flags;
INIT_LIST_HEAD(&hl->addr_list);
INIT_LIST_HEAD(&hl->host_info_list);
rwlock_init(&hl->host_info_lock);
down_write(&hl_drivers_sem);
list_add_tail(&hl->hl_list, &hl_drivers);
up_write(&hl_drivers_sem);
write_lock_irqsave(&hl_irqs_lock, flags);
list_add_tail(&hl->irq_list, &hl_irqs);
write_unlock_irqrestore(&hl_irqs_lock, flags);
if (hl->add_host)
nodemgr_for_each_host(hl, highlevel_for_each_host_reg);
return;
}
static void __delete_addr(struct hpsb_address_serve *as)
{
list_del(&as->host_list);
list_del(&as->hl_list);
kfree(as);
}
static void __unregister_host(struct hpsb_highlevel *hl, struct hpsb_host *host,
int update_cr)
{
unsigned long flags;
struct list_head *lh, *next;
struct hpsb_address_serve *as;
/* First, let the highlevel driver unreg */
if (hl->remove_host)
hl->remove_host(host);
/* Remove any addresses that are matched for this highlevel driver
* and this particular host. */
write_lock_irqsave(&addr_space_lock, flags);
list_for_each_safe (lh, next, &hl->addr_list) {
as = list_entry(lh, struct hpsb_address_serve, hl_list);
if (as->host == host)
__delete_addr(as);
}
write_unlock_irqrestore(&addr_space_lock, flags);
/* Now update the config-rom to reflect anything removed by the
* highlevel driver. */
if (update_cr && host->update_config_rom &&
hpsb_update_config_rom_image(host) < 0)
HPSB_ERR("Failed to generate Configuration ROM image for host "
"%s-%d", hl->name, host->id);
/* Finally remove all the host info associated between these two. */
hpsb_destroy_hostinfo(hl, host);
}
static int highlevel_for_each_host_unreg(struct hpsb_host *host, void *__data)
{
struct hpsb_highlevel *hl = __data;
__unregister_host(hl, host, 1);
return 0;
}
void hpsb_unregister_highlevel(struct hpsb_highlevel *hl)
{
unsigned long flags;
write_lock_irqsave(&hl_irqs_lock, flags);
list_del(&hl->irq_list);
write_unlock_irqrestore(&hl_irqs_lock, flags);
down_write(&hl_drivers_sem);
list_del(&hl->hl_list);
up_write(&hl_drivers_sem);
nodemgr_for_each_host(hl, highlevel_for_each_host_unreg);
}
u64 hpsb_allocate_and_register_addrspace(struct hpsb_highlevel *hl,
struct hpsb_host *host,
struct hpsb_address_ops *ops,
u64 size, u64 alignment,
u64 start, u64 end)
{
struct hpsb_address_serve *as, *a1, *a2;
struct list_head *entry;
u64 retval = CSR1212_INVALID_ADDR_SPACE;
unsigned long flags;
u64 align_mask = ~(alignment - 1);
if ((alignment & 3) || (alignment > 0x800000000000ULL) ||
(hweight64(alignment) != 1)) {
HPSB_ERR("%s called with invalid alignment: 0x%048llx",
__FUNCTION__, (unsigned long long)alignment);
return retval;
}
/* default range,
* avoids controller's posted write area (see OHCI 1.1 clause 1.5) */
if (start == CSR1212_INVALID_ADDR_SPACE &&
end == CSR1212_INVALID_ADDR_SPACE) {
start = host->middle_addr_space;
end = CSR1212_ALL_SPACE_END;
}
if (((start|end) & ~align_mask) || (start >= end) ||
(end > CSR1212_ALL_SPACE_END)) {
HPSB_ERR("%s called with invalid addresses "
"(start = %012Lx end = %012Lx)", __FUNCTION__,
(unsigned long long)start,(unsigned long long)end);
return retval;
}
as = kmalloc(sizeof(*as), GFP_KERNEL);
if (!as)
return retval;
INIT_LIST_HEAD(&as->host_list);
INIT_LIST_HEAD(&as->hl_list);
as->op = ops;
as->host = host;
write_lock_irqsave(&addr_space_lock, flags);
list_for_each(entry, &host->addr_space) {
u64 a1sa, a1ea;
u64 a2sa, a2ea;
a1 = list_entry(entry, struct hpsb_address_serve, host_list);
a2 = list_entry(entry->next, struct hpsb_address_serve,
host_list);
a1sa = a1->start & align_mask;
a1ea = (a1->end + alignment -1) & align_mask;
a2sa = a2->start & align_mask;
a2ea = (a2->end + alignment -1) & align_mask;
if ((a2sa - a1ea >= size) && (a2sa - start >= size) &&
(a2sa > start)) {
as->start = max(start, a1ea);
as->end = as->start + size;
list_add(&as->host_list, entry);
list_add_tail(&as->hl_list, &hl->addr_list);
retval = as->start;
break;
}
}
write_unlock_irqrestore(&addr_space_lock, flags);
if (retval == CSR1212_INVALID_ADDR_SPACE)
kfree(as);
return retval;
}
int hpsb_register_addrspace(struct hpsb_highlevel *hl, struct hpsb_host *host,
struct hpsb_address_ops *ops, u64 start, u64 end)
{
struct hpsb_address_serve *as;
struct list_head *lh;
int retval = 0;
unsigned long flags;
if (((start|end) & 3) || (start >= end) ||
(end > CSR1212_ALL_SPACE_END)) {
HPSB_ERR("%s called with invalid addresses", __FUNCTION__);
return 0;
}
as = kmalloc(sizeof(*as), GFP_ATOMIC);
if (!as)
return 0;
INIT_LIST_HEAD(&as->host_list);
INIT_LIST_HEAD(&as->hl_list);
as->op = ops;
as->start = start;
as->end = end;
as->host = host;
write_lock_irqsave(&addr_space_lock, flags);
list_for_each(lh, &host->addr_space) {
struct hpsb_address_serve *as_this =
list_entry(lh, struct hpsb_address_serve, host_list);
struct hpsb_address_serve *as_next =
list_entry(lh->next, struct hpsb_address_serve,
host_list);
if (as_this->end > as->start)
break;
if (as_next->start >= as->end) {
list_add(&as->host_list, lh);
list_add_tail(&as->hl_list, &hl->addr_list);
retval = 1;
break;
}
}
write_unlock_irqrestore(&addr_space_lock, flags);
if (retval == 0)
kfree(as);
return retval;
}
int hpsb_unregister_addrspace(struct hpsb_highlevel *hl, struct hpsb_host *host,
u64 start)
{
int retval = 0;
struct hpsb_address_serve *as;
struct list_head *lh, *next;
unsigned long flags;
write_lock_irqsave(&addr_space_lock, flags);
list_for_each_safe (lh, next, &hl->addr_list) {
as = list_entry(lh, struct hpsb_address_serve, hl_list);
if (as->start == start && as->host == host) {
__delete_addr(as);
retval = 1;
break;
}
}
write_unlock_irqrestore(&addr_space_lock, flags);
return retval;
}
int hpsb_listen_channel(struct hpsb_highlevel *hl, struct hpsb_host *host,
unsigned int channel)
{
if (channel > 63) {
HPSB_ERR("%s called with invalid channel", __FUNCTION__);
return -EINVAL;
}
if (host->iso_listen_count[channel]++ == 0)
return host->driver->devctl(host, ISO_LISTEN_CHANNEL, channel);
return 0;
}
void hpsb_unlisten_channel(struct hpsb_highlevel *hl, struct hpsb_host *host,
unsigned int channel)
{
if (channel > 63) {
HPSB_ERR("%s called with invalid channel", __FUNCTION__);
return;
}
if (--host->iso_listen_count[channel] == 0)
host->driver->devctl(host, ISO_UNLISTEN_CHANNEL, channel);
}
static void init_hpsb_highlevel(struct hpsb_host *host)
{
INIT_LIST_HEAD(&dummy_zero_addr.host_list);
INIT_LIST_HEAD(&dummy_zero_addr.hl_list);
INIT_LIST_HEAD(&dummy_max_addr.host_list);
INIT_LIST_HEAD(&dummy_max_addr.hl_list);
dummy_zero_addr.op = dummy_max_addr.op = &dummy_ops;
dummy_zero_addr.start = dummy_zero_addr.end = 0;
dummy_max_addr.start = dummy_max_addr.end = ((u64) 1) << 48;
list_add_tail(&dummy_zero_addr.host_list, &host->addr_space);
list_add_tail(&dummy_max_addr.host_list, &host->addr_space);
}
void highlevel_add_host(struct hpsb_host *host)
{
struct hpsb_highlevel *hl;
init_hpsb_highlevel(host);
down_read(&hl_drivers_sem);
list_for_each_entry(hl, &hl_drivers, hl_list) {
if (hl->add_host)
hl->add_host(host);
}
up_read(&hl_drivers_sem);
if (host->update_config_rom && hpsb_update_config_rom_image(host) < 0)
HPSB_ERR("Failed to generate Configuration ROM image for host "
"%s-%d", hl->name, host->id);
}
void highlevel_remove_host(struct hpsb_host *host)
{
struct hpsb_highlevel *hl;
down_read(&hl_drivers_sem);
list_for_each_entry(hl, &hl_drivers, hl_list)
__unregister_host(hl, host, 0);
up_read(&hl_drivers_sem);
}
void highlevel_host_reset(struct hpsb_host *host)
{
unsigned long flags;
struct hpsb_highlevel *hl;
read_lock_irqsave(&hl_irqs_lock, flags);
list_for_each_entry(hl, &hl_irqs, irq_list) {
if (hl->host_reset)
hl->host_reset(host);
}
read_unlock_irqrestore(&hl_irqs_lock, flags);
}
void highlevel_iso_receive(struct hpsb_host *host, void *data, size_t length)
{
unsigned long flags;
struct hpsb_highlevel *hl;
int channel = (((quadlet_t *)data)[0] >> 8) & 0x3f;
read_lock_irqsave(&hl_irqs_lock, flags);
list_for_each_entry(hl, &hl_irqs, irq_list) {
if (hl->iso_receive)
hl->iso_receive(host, channel, data, length);
}
read_unlock_irqrestore(&hl_irqs_lock, flags);
}
void highlevel_fcp_request(struct hpsb_host *host, int nodeid, int direction,
void *data, size_t length)
{
unsigned long flags;
struct hpsb_highlevel *hl;
int cts = ((quadlet_t *)data)[0] >> 4;
read_lock_irqsave(&hl_irqs_lock, flags);
list_for_each_entry(hl, &hl_irqs, irq_list) {
if (hl->fcp_request)
hl->fcp_request(host, nodeid, direction, cts, data,
length);
}
read_unlock_irqrestore(&hl_irqs_lock, flags);
}
int highlevel_read(struct hpsb_host *host, int nodeid, void *data, u64 addr,
unsigned int length, u16 flags)
{
struct hpsb_address_serve *as;
unsigned int partlength;
int rcode = RCODE_ADDRESS_ERROR;
read_lock(&addr_space_lock);
list_for_each_entry(as, &host->addr_space, host_list) {
if (as->start > addr)
break;
if (as->end > addr) {
partlength = min(as->end - addr, (u64) length);
if (as->op->read)
rcode = as->op->read(host, nodeid, data,
addr, partlength, flags);
else
rcode = RCODE_TYPE_ERROR;
data += partlength;
length -= partlength;
addr += partlength;
if ((rcode != RCODE_COMPLETE) || !length)
break;
}
}
read_unlock(&addr_space_lock);
if (length && (rcode == RCODE_COMPLETE))
rcode = RCODE_ADDRESS_ERROR;
return rcode;
}
int highlevel_write(struct hpsb_host *host, int nodeid, int destid, void *data,
u64 addr, unsigned int length, u16 flags)
{
struct hpsb_address_serve *as;
unsigned int partlength;
int rcode = RCODE_ADDRESS_ERROR;
read_lock(&addr_space_lock);
list_for_each_entry(as, &host->addr_space, host_list) {
if (as->start > addr)
break;
if (as->end > addr) {
partlength = min(as->end - addr, (u64) length);
if (as->op->write)
rcode = as->op->write(host, nodeid, destid,
data, addr, partlength,
flags);
else
rcode = RCODE_TYPE_ERROR;
data += partlength;
length -= partlength;
addr += partlength;
if ((rcode != RCODE_COMPLETE) || !length)
break;
}
}
read_unlock(&addr_space_lock);
if (length && (rcode == RCODE_COMPLETE))
rcode = RCODE_ADDRESS_ERROR;
return rcode;
}
int highlevel_lock(struct hpsb_host *host, int nodeid, quadlet_t *store,
u64 addr, quadlet_t data, quadlet_t arg, int ext_tcode,
u16 flags)
{
struct hpsb_address_serve *as;
int rcode = RCODE_ADDRESS_ERROR;
read_lock(&addr_space_lock);
list_for_each_entry(as, &host->addr_space, host_list) {
if (as->start > addr)
break;
if (as->end > addr) {
if (as->op->lock)
rcode = as->op->lock(host, nodeid, store, addr,
data, arg, ext_tcode,
flags);
else
rcode = RCODE_TYPE_ERROR;
break;
}
}
read_unlock(&addr_space_lock);
return rcode;
}
int highlevel_lock64(struct hpsb_host *host, int nodeid, octlet_t *store,
u64 addr, octlet_t data, octlet_t arg, int ext_tcode,
u16 flags)
{
struct hpsb_address_serve *as;
int rcode = RCODE_ADDRESS_ERROR;
read_lock(&addr_space_lock);
list_for_each_entry(as, &host->addr_space, host_list) {
if (as->start > addr)
break;
if (as->end > addr) {
if (as->op->lock64)
rcode = as->op->lock64(host, nodeid, store,
addr, data, arg,
ext_tcode, flags);
else
rcode = RCODE_TYPE_ERROR;
break;
}
}
read_unlock(&addr_space_lock);
return rcode;
}
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