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chapter.c
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/***************************************************************************
*
* Copyright (c) 1997, 1998 Timpanogas Research Group, Inc. All Rights
* Reserved.
*
* AUTHOR : Darren Major & Merrill Teemant
* FILE : CHAPTER.C
* DESCRIP : Multi-Processing Memory Manager for MANOS v1.0
* DATE : January 26, 1998
*
*
***************************************************************************/
/********************************** header files ************************************/
#include "stdarg.h"
#include "stdio.h"
#include "stdlib.h"
#include "emit.h"
#include "os.h"
#include "kernel.h"
#include "types.h"
#include "globals.h"
/********************************** #defines ****************************************/
#define CCB_ELEMENTS 0x45424343
/********************************** structures **************************************/
/********************************** typedefs ****************************************/
extern page_node physical_chapter_manager;
byte_node *vm256_manager;
page_node vmpage_manager;
byte_node *vm64_manager;
uint32 vm256_special_list_head[4];
uint32 *vmpage;
/********************************** Global Variables ********************************/
/***************************************************************************
*
* FUNCTION : generic_page_map_entry(
* table_entry **entry,
* uint32 p_index,
* chapter_manager *c_manager)
*
* USAGE : map a page in the chapter manager
*
* RETURN VALUE : 0 - SUCCESS
* -1 - FAILURE
*
***************************************************************************/
void chapter_map_entry(
quad_entry **entry,
uint32 p_index,
chapter_node *chapter)
{
if (chapter->page_index_table[(p_index & 0x3FF) >> 5] != 0)
{
*entry = &chapter->page_index_table[(p_index & 0x3FF) >> 5][p_index & 0x1F];
return;
}
vmdbg panic("invalide entry passed to chapter_map_entry");
}
/***************************************************************************
*
* FUNCTION : generic_chapter_return(
* chapter_control_block *ccb)
*
* USAGE : return a page in the chapter manager
*
* RETURN VALUE : 0 - SUCCESS
* -2 - ERROR
*
***************************************************************************/
uint32 generic_chapter_return(
chapter_node *ccb)
{
chapter_destroy(ccb);
return(0);
}
/***************************************************************************
*
* FUNCTION : generic_page_alloc(
* uint32 **page_ptr,
* chapter_manager *c_manager)
*
* USAGE : alloc a page in the chapter manager
*
* RETURN VALUE : 0 - SUCCESS
* -1 - FAILURE
*
***************************************************************************/
uint32 generic_chapter_alloc(
uint32 **page_ptr,
uint32 page_count,
uint32 chapter_flags)
{
register uint32 retCode;
uint32 phy_pte;
uint32 i, j;
uint32 *pte;
uint32 p_index;
quad_entry *p_entry;
quad_entry *l_entry;
uint32 logical_page;
uint32 ccode;
chapter_node *chapter;
uint32 chapter_count;
uint32 temp_page_count;
uint32 flags = get_flags_no_cli();
if (chapter_create(&chapter, &physical_chapter_manager, chapter_flags, page_count, -1) == 0)
{
if ((chapter_flags & CHAPTER_ALLOC_IMMEDIATE_BIT) != 0)
{
chapter_count = (page_count + PHYSICAL_CHAPTER_PAGE_SIZE - 1) >> PHYSICAL_CHAPTER_PAGE_SHIFT;
logical_page = (uint32) chapter->base_address;
for (i=0; i<chapter_count; i++)
{
new_mat_lookup_ccb(&chapter, (uint32 *) logical_page);
temp_page_count = ((i+1) < chapter_count) ? PHYSICAL_CHAPTER_PAGE_SIZE : page_count - (i * PHYSICAL_CHAPTER_PAGE_SIZE);
// alock_write_lock(chapter->rwlock);
cli();
spin_lock((uint32 *) chapter->rwlock);
for (j=0; j<temp_page_count; j++, logical_page += LOGICAL_PAGE_SIZE)
{
chapter_map_entry(&l_entry, logical_page >> LOGICAL_PAGE_SHIFT, chapter);
l_entry->low_entry = 0;
l_entry->high_entry = ALLOCATED_STAMP;
if ((chapter_flags & CHAPTER_SYSTEM_MEMORY) == 0)
ccode = mpt_alloc_page(&p_index, ((uint32) chapter >> 4) | MPT_ASSIGNED_BIT, logical_page);
else
ccode = mpt_system_alloc_page(&p_index, ((uint32) chapter >> 4) | MPT_NONMOVABLE_PAGE_BIT, logical_page);
if (ccode != 0)
{
panic("error returned from mpt_alloc_page or mpt_system_alloc_page");
}
MMU_page_map(logical_page >> 12, p_index, 0);
}
// alock_write_unlock(chapter->rwlock);
spin_unlock((uint32 *) chapter->rwlock);
set_flags(flags);
}
}
*page_ptr = chapter->base_address;
set_flags(flags);
return(0);
}
set_flags(flags);
return(-1);
}
/***************************************************************************
*
* FUNCTION : generic_page_expand(
* chapter_manager *c_manager)
*
* USAGE : get a new page in the chapter manager, get a new chapter
* if necessary
*
* RETURN VALUE : 0 - SUCCESS
* -1 - FAILURE
*
***************************************************************************/
/*
uint32 chapter_index_expand(
page_node *p_manager)
{
uint32 i, j, k, l;
uint32 base;
uint32 table_count;
uint32 ccode;
uint32 *page_ptr;
uint32 flags = get_flags_no_cli();
quad_entry *table;
chapter_node *chapter;
book_node *book;
if ((chapter = p_manager->chapter_list_head) != 0)
{
do
{
if (chapter->base_mask != (LONG) -1)
{
ccode = (chapter->chapter_flags & CHAPTER_SPECIAL_BIT) ? vm256_special_alloc((uint32 **) &table) : vm256_alloc((uint32 **) &table);
if (ccode != 0)
{
// p_manager->page_extension_flag = 0;
return(-1);
}
// alock_write_lock(chapter->rwlock);
cli();
spin_lock((uint32 *) chapter->rwlock);
for (i=0; i<32; i++)
{
if ((chapter->base_mask & (1 << i)) == 0)
break;
}
if (i < 32)
{
chapter->page_count = (i+1) * 32;
chapter->base_mask |= 1 << i;
chapter->page_index_table[i] = table;
base = (chapter->chapter_index << 10) + (i * 32);
SetDataD((uint32 *) table, C_ENTRY_OUT_OF_BOUNDS, 64);
for (j=0; j<=32-p_manager->page_size; j+=p_manager->page_skip)
{
p_manager->total_page_count ++;
for (k=1; k<p_manager->page_size; k++)
{
table[j + k].low_entry = C_ENTRY_LIST_EXTENSION;
table[j + k].high_entry = 0;
}
table[j].low_entry = C_ENTRY_LIST_ENTRY;
table[j].high_entry = 0;
if ((i + j) != 0)
new_index_return(chapter->index_list_head, 0, base + j, chapter_map_entry, chapter);
else
{
table[j].low_entry = -1;
table[j].high_entry = -1;
}
}
// alock_write_unlock(chapter->rwlock);
spin_unlock((uint32 *) chapter->rwlock);
set_flags(flags);
// p_manager->page_extension_flag = 0;
return(0);
}
else
{
if (chapter->chapter_flags & CHAPTER_SPECIAL_BIT)
vm256_special_return((uint32 *) table);
else
vm256_return((uint32 *) table);
}
// alock_write_unlock(chapter->rwlock);
spin_unlock((uint32 *) chapter->rwlock);
set_flags(flags);
}
chapter = chapter->page_next_link;
} while (chapter != p_manager->chapter_list_head);
}
// p_manager->page_extension_flag = 0;
return(-1);
}
*/
uint32 chapter_expand(
page_node *p_manager)
{
chapter_node *chapter;
while (1)
{
if (p_manager->page_extension_flag == 0)
{
spin_lock(&p_manager->page_mutex);
if (p_manager->page_extension_flag == 0)
break;
spin_unlock(&p_manager->page_mutex);
}
thread_switch();
}
p_manager->page_extension_flag = (uint32) get_running_process();
spin_unlock(&p_manager->page_mutex);
if (chapter_create(&chapter, p_manager, p_manager->page_flags, PHYSICAL_CHAPTER_PAGE_SIZE, -1) == 0)
{
p_manager->page_extension_flag = 0;
return(0);
}
p_manager->page_extension_flag = 0;
return(-1);
}
uint32 special_chapter_expand(
page_node *p_manager)
{
chapter_node *chapter;
uint32 p_index;
uint32 *logical_page;
uint32 i, j, *table;
uint32 base;
while (1)
{
if (p_manager->page_extension_flag == 0)
{
spin_lock(&p_manager->page_mutex);
if (p_manager->page_extension_flag == 0)
break;
spin_unlock(&p_manager->page_mutex);
}
thread_switch();
}
p_manager->page_extension_flag = (uint32) get_running_process();
spin_unlock(&p_manager->page_mutex);
mat_alloc(p_manager->book_link, (chapter_node *) RESERVED_CCB, &logical_page, 1);
if (mpt_system_alloc_page(&p_index, MPT_CCB_PAGE, MPT_CCB_PAGE) == 0)
{
MMU_page_map((uint32) logical_page >> 12, p_index, 0);
for (i=0; i<LOGICAL_PAGE_SIZE; i+= 256)
vm256_special_return(&logical_page[i/4]);
if (chapter_create(&chapter, p_manager, p_manager->page_flags, PHYSICAL_CHAPTER_PAGE_SIZE, (uint32) logical_page) == 0)
{
p_manager->page_extension_flag = 0;
return(0);
}
p_manager->page_extension_flag = 0;
return(-1);
}
p_manager->page_extension_flag = 0;
return(-1);
}
/***************************************************************************
*
* FUNCTION : generic_control_block_init(
* page_map_entry(
* table_entry **entry,
* uint32 p_index,
* chapter_manager *c_manager)
*
* USAGE : map a page in the chapter manager
*
* RETURN VALUE : 0 - SUCCESS
* -1 - FAILURE
*
***************************************************************************/
uint32 chapter_create(
chapter_node **new_chapter,
page_node *p_manager,
uint32 chapter_flags,
uint32 page_count,
uint32 logical_base)
{
uint32 i, j, ccode;
uint32 chapter_count;
uint32 *base_address;
book_node *book;
chapter_node *head;
chapter_node *chapter = 0;
*new_chapter = 0;
chapter_count = (page_count + PHYSICAL_CHAPTER_PAGE_SIZE - 1) >> PHYSICAL_CHAPTER_PAGE_SHIFT;
if (logical_base == (uint32) -1)
mat_alloc(p_manager->book_link, (chapter_node *) RESERVED_CCB, &base_address, chapter_count);
else
base_address = (uint32 *) logical_base;
for (i=0; i<chapter_count; i++)
{
ccode = (chapter_flags & CHAPTER_SPECIAL_BIT) ? vm256_special_alloc((uint32 **) &chapter) : vm256_alloc((uint32 **) &chapter);
if (ccode != 0)
{
while (i > 1)
{
BREAK();
}
*new_chapter = 0;
return(-1);
}
chapter->base_address = &base_address[(i << LOGICAL_CHAPTER_SHIFT)/4];
chapter->chapter_index = (uint32) chapter->base_address >> LOGICAL_CHAPTER_SHIFT;
book = p_manager->book_link;
chapter->page_link = p_manager;
chapter->book_link = book;
chapter->chapter_flags = chapter_flags;
chapter->page_count = ((i+1) < chapter_count) ? 1024 : ((page_count-1) & 0x3FF) + 1;
chapter->base_mask = 0;
chapter->chapter_type = p_manager->page_type;
chapter->chapter_stamp = CHAPTER_CONTROL_BLOCK_STAMP;
chapter->pte = 0;
if ((chapter_flags & CHAPTER_PHYSICAL_MAH) == 0)
{
mah_alloc(&chapter->rwlock_mah, &chapter->rwlock);
mah_alloc(&chapter->index_list_head_mah, &chapter->index_list_head);
mah_alloc(&chapter->special_unmap_list_head_mah, &chapter->special_unmap_list_head);
mah_alloc(&chapter->special_index_list_head_mah, &chapter->special_index_list_head);
}
else
{
pmah_alloc(&chapter->rwlock_mah, &chapter->rwlock);
pmah_alloc(&chapter->index_list_head_mah, &chapter->index_list_head);
pmah_alloc(&chapter->special_unmap_list_head_mah, &chapter->special_unmap_list_head);
pmah_alloc(&chapter->special_index_list_head_mah, &chapter->special_index_list_head);
}
cli();
spin_lock(&book->book_mutex);
book->chapter_hash_size ++;
if ((head = book->chapter_hash_table[chapter->chapter_index & 0xFF]) == 0)
{
chapter->book_next_link = chapter;
chapter->book_last_link = chapter;
book->chapter_hash_table[chapter->chapter_index & 0xFF] = chapter;
}
else
{
chapter->book_last_link = head->book_last_link;
chapter->book_next_link = head;
head->book_last_link->book_next_link = chapter;
head->book_last_link = chapter;
}
if ((head = p_manager->chapter_list_head) == 0)
{
chapter->page_next_link = chapter;
chapter->page_last_link = chapter;
p_manager->chapter_list_head = chapter;
}
else
{
chapter->page_last_link = head->page_last_link;
chapter->page_next_link = head;
head->page_last_link->page_next_link = chapter;
head->page_last_link = chapter;
}
chapter->chapter_logical_index = p_manager->chapter_logical_index ++;
spin_unlock(&book->book_mutex);
sti();
mat_set_ccb(book, chapter, chapter->base_address);
if (chapter_count > 1)
{
chapter->chapter_flags |= CHAPTER_EXTENSION_GROUP_BIT;
if ((i+1) < chapter_count)
chapter->chapter_flags |= CHAPTER_EXTENSION_BIT;
}
if (*new_chapter == 0)
*new_chapter = chapter;
if ((chapter->chapter_flags & CHAPTER_NOT_SPARSE_BIT) != 0)
{
for (j=0; j<32; j++)
{
if ((j * 32) < chapter->page_count)
{
ccode = (chapter_flags & CHAPTER_SPECIAL_BIT) ? vm256_special_alloc((uint32 **) &chapter->page_index_table[j]) : vm256_alloc((uint32 **) &chapter->page_index_table[j]);
if (ccode != 0)
break;
chapter->base_mask |= 1 << j;
SetDataD((uint32 *) chapter->page_index_table[j], (chapter->chapter_flags & PAGE_PHYSICAL_EQUALS_LOGICAL_BIT) ? C_ENTRY_MAPPED : C_ENTRY_ALLOCATED, 256 / 4);
}
}
}
}
return(0);
}
/***************************************************************************
*
* FUNCTION : generic_control_block_uninit(
* page_map_entry(
* table_entry **entry,
* uint32 p_index,
* chapter_manager *c_manager)
*
* USAGE : map a page in the chapter manager
*
* RETURN VALUE : 0 - SUCCESS
* -1 - FAILURE
*
***************************************************************************/
void chapter_destroy(
chapter_node *new_chapter)
{
uint32 j, k;
uint32 t_index;
uint32 done_flag = 1;
uint32 chapter_count;
uint32 *base_address;
uint32 flags = get_flags_no_cli();
quad_entry *l_entry;
book_node *book;
page_node *p_manager;
chapter_node *chapter;
p_manager = new_chapter->page_link;
book = new_chapter->book_link;
new_chapter->pte = 0;
// if ((p_manager->page_flags & PAGE_PHYSICAL_EQUALS_LOGICAL_BIT) == 0)
// as_chapter_out((uint32) chapter->base_address >> 12);
base_address = new_chapter->base_address;
while (done_flag != 0)
{
if (new_mat_lookup_ccb(&chapter, base_address) == 0)
{
cli();
// alock_write_lock(chapter->rwlock);
cli();
spin_lock((uint32 *) chapter->rwlock);
spin_lock(&book->book_mutex);
chapter->book_next_link->book_last_link = chapter->book_last_link;
chapter->book_last_link->book_next_link = chapter->book_next_link;
if (book->chapter_hash_table[chapter->chapter_index & 0xFF] == chapter)
{
if (chapter->book_next_link == chapter)
book->chapter_hash_table[chapter->chapter_index & 0xFF] = 0;
else
book->chapter_hash_table[chapter->chapter_index & 0xFF] = chapter->book_next_link;
}
chapter->page_next_link->page_last_link = chapter->page_last_link;
chapter->page_last_link->page_next_link = chapter->page_next_link;
if (p_manager->chapter_list_head == chapter)
{
if (chapter->page_next_link == chapter)
p_manager->chapter_list_head = 0;
else
p_manager->chapter_list_head = chapter->page_next_link;
}
spin_unlock(&book->book_mutex);
sti();
if ((chapter->chapter_flags & CHAPTER_PHYSICAL_MAH) == 0)
{
mah_return(chapter->rwlock_mah);
mah_return(chapter->index_list_head_mah);
mah_return(chapter->special_unmap_list_head_mah);
mah_return(chapter->special_index_list_head_mah);
}
for (j=0; j<32; j++)
{
if ((l_entry = chapter->page_index_table[j]) != 0)
{
for (k=0; k<32; k++, l_entry ++)
{
if ((l_entry->low_entry & C_ENTRY_MASK) == C_ENTRY_MAPPED)
{
MMU_page_unmap((uint32) &chapter->base_address[((j * 32) + k) * LONGS_PER_PAGE] >> LOGICAL_PAGE_SHIFT, &t_index, 0);
if ((t_index >> 12) != 0)
mpt_return_page(t_index >> 12);
}
}
vm256_return((uint32 *) chapter->page_index_table[j]);
}
}
// alock_write_unlock(chapter->rwlock);
// spin_unlock((uint32 *) chapter->rwlock); already returned
set_flags(flags);
vm256_return((uint32 *) chapter);
mat_return(book, chapter, base_address, 1);
}
if ((chapter->chapter_flags & CHAPTER_EXTENSION_BIT) == 0)
done_flag = 0;
base_address += (LOGICAL_CHAPTER_SIZE/4);
}
cli();
if (VMFlushTLB() != 0)
panic("FlushTLB returned an error ");
sti();
}
uint32 funny_retry_counter = 0;
uint32 chapter_index_alloc_backoff_counter = 0;
uint32 chapter_index_alloc(
uint32 **logical_address,
page_node *p_manager,
uint32 owner_id)
{
uint32 i, j, k;
uint32 l_index;
uint32 t_index;
uint32 retry_flag = 1;
uint32 processor_id = 0;
uint32 max_processor_id;
uint32 max_count;
uint32 ccode;
uint32 base;
uint32 flags = get_flags_no_cli();
quad_entry *table;
quad_entry *l_entry;
chapter_node *chapter;
if ((chapter = p_manager->chapter_list_head) == 0)
{
set_flags(flags);
return(PAGE_LOGICAL_ALLOCATION_ERROR);
}
while (retry_flag != 0)
{
retry_flag = 0;
vmdbg if (((uint32) chapter & 0x000000FF) != 0)
vmdbg panic("integrity check in chapter_index_alloc");
do
{
// alock_read_lock(chapter->rwlock, &processor_id);
cli();
spin_lock((uint32 *) chapter->rwlock);
if (new_index_alloc(chapter->index_list_head, processor_id, &l_index, &l_entry, chapter_map_entry, chapter) == 0)
{
if ((p_manager->page_flags & PAGE_ALLOC_IMMEDIATE_BIT) != 0)
{
for (i=0; i<p_manager->page_size; i++, l_entry ++)
{
if ((p_manager->page_flags & PAGE_SYSTEM_MEMORY) != 0)
ccode = mpt_system_alloc_page(&t_index, ((uint32) chapter >> 4) | MPT_NONMOVABLE_PAGE_BIT, (l_index + i) << LOGICAL_PAGE_SHIFT);
else
ccode = mpt_alloc_page(&t_index, ((uint32) chapter >> 4) | MPT_ASSIGNED_BIT, (l_index + i) << LOGICAL_PAGE_SHIFT);
if (ccode != 0)
{
while (i > 0)
{
i--;
l_entry--;
l_entry->low_entry = C_ENTRY_LIST_EXTENSION;
l_entry->high_entry = 0;
MMU_page_unmap(l_index + i, &t_index, 0);
if ((t_index >> 12) != 0)
mpt_return_page(t_index >> 12);
}
l_entry->low_entry = C_ENTRY_LIST_ENTRY;
l_entry->high_entry = 0;
new_index_return(chapter->index_list_head, processor_id, l_index, chapter_map_entry, chapter);
// alock_read_unlock(chapter->rwlock, processor_id);
spin_unlock((uint32 *) chapter->rwlock);
set_flags(flags);
return(PAGE_PHYSICAL_ALLOCATION_ERROR);
}
l_entry->low_entry = t_index + C_ENTRY_MAPPED;
l_entry->high_entry = 0;
MMU_page_map(l_index + i, t_index, 0);
}
if ((p_manager->page_flags & PAGE_SUB_OWNER_BIT) != 0)
{
l_entry->low_entry = (owner_id >> 4) + C_ENTRY_SUB_OWNER_ID;
l_entry->high_entry = 0;
}
// alock_read_unlock(chapter->rwlock, processor_id);
spin_unlock((uint32 *) chapter->rwlock);
set_flags(flags);
if ((p_manager->page_flags & PAGE_INITIALIZE_DATA_BIT) != 0)
SetDataD((uint32 *) (l_index << LOGICAL_PAGE_SHIFT), p_manager->page_initialization_value, (p_manager->page_size * 4096)/4);
*logical_address = (uint32 *) (l_index << LOGICAL_PAGE_SHIFT);
return(0);
}
for (i=0; i<p_manager->page_size; i++, l_entry ++)
{
l_entry->low_entry = C_ENTRY_ALLOCATED;
l_entry->high_entry = 0;
}
if ((p_manager->page_flags & PAGE_SUB_OWNER_BIT) != 0)
{
l_entry->low_entry = (owner_id >> 4) + C_ENTRY_SUB_OWNER_ID;
l_entry->high_entry = 0;
}
// alock_read_unlock(chapter->rwlock, processor_id);
spin_unlock((uint32 *) chapter->rwlock);
set_flags(flags);
*logical_address = (uint32 *) (l_index << LOGICAL_PAGE_SHIFT);
return(0);
}
// alock_read_unlock(chapter->rwlock, processor_id);
spin_unlock((uint32 *) chapter->rwlock);
set_flags(flags);
/*
// if ((chapter->index_list_head[0 * QUADS_PER_PAGE].high_entry +
// chapter->index_list_head[1 * QUADS_PER_PAGE].high_entry +
// chapter->index_list_head[2 * QUADS_PER_PAGE].high_entry +
// chapter->index_list_head[3 * QUADS_PER_PAGE].high_entry) != 0)
// {
max_count = 0;
for (i=0; i<4; i++)
{
if (chapter->index_list_head[i * QUADS_PER_PAGE].high_entry > max_count)
{
max_count = chapter->index_list_head[i * QUADS_PER_PAGE].high_entry;
max_processor_id = i;
}
}
if (max_count > 0)
{
alock_write_lock(chapter->rwlock);
while (alock_read_check(chapter->rwlock, max_processor_id) != 0)
chapter_index_alloc_backoff_counter ++;
if (new_index_alloc(chapter->index_list_head, max_processor_id, &l_index, &l_entry, chapter_map_entry, chapter) == 0)
{
if ((p_manager->page_flags & PAGE_ALLOC_IMMEDIATE_BIT) != 0)
{
for (i=0; i<p_manager->page_size; i++, l_entry ++)
{
if ((p_manager->page_flags & PAGE_SYSTEM_MEMORY) != 0)
ccode = mpt_system_alloc_page(&t_index, ((uint32) chapter >> 4) | MPT_NONMOVABLE_PAGE_BIT, (l_index + i) << LOGICAL_PAGE_SHIFT);
else
ccode = mpt_alloc_page(&t_index, ((uint32) chapter >> 4) | MPT_ASSIGNED_BIT, (l_index + i) << LOGICAL_PAGE_SHIFT);
if (ccode != 0)
{
while (i > 0)
{
i--;
l_entry --;
l_entry->low_entry = C_ENTRY_LIST_EXTENSION;
l_entry->high_entry = 0;
MMU_page_unmap(l_index + i, &t_index, 0);
if ((t_index >> 12) != 0)
mpt_return_page(t_index >> 12);
}
l_entry->low_entry = C_ENTRY_LIST_ENTRY;
l_entry->high_entry = 0;
new_index_return(chapter->index_list_head, processor_id, l_index, chapter_map_entry, chapter);
alock_write_unlock(chapter->rwlock);
return(PAGE_PHYSICAL_ALLOCATION_ERROR);
}
l_entry->low_entry = t_index + C_ENTRY_MAPPED;
l_entry->high_entry = 0;
MMU_page_map(l_index + i, t_index, 0);
}
if ((p_manager->page_flags & PAGE_INITIALIZE_DATA_BIT) != 0)
SetDataD((uint32 *) (l_index << LOGICAL_PAGE_SHIFT), p_manager->page_initialization_value, (p_manager->page_size * 4096)/4);
*logical_address = (uint32 *) (l_index << LOGICAL_PAGE_SHIFT);
}
else
{
for (i=0; i<p_manager->page_size; i++, l_entry ++)
{
l_entry->low_entry = C_ENTRY_ALLOCATED;
l_entry->high_entry = 0;
}
}
if ((p_manager->page_flags & PAGE_SUB_OWNER_BIT) != 0)
{
l_entry->low_entry = (owner_id >> 4) + C_ENTRY_SUB_OWNER_ID;
l_entry->high_entry = 0;
}
for (i=0; i<((max_count + 1) / 2); i++)
{
if (new_index_alloc(chapter->index_list_head, max_processor_id, &l_index, &l_entry, chapter_map_entry, chapter) != 0)
break;
new_index_return(chapter->index_list_head, processor_id, l_index, chapter_map_entry, chapter);
}
alock_write_unlock(chapter->rwlock);
return(0);
}
alock_write_unlock(chapter->rwlock);
}
// }
else
{
chapter = chapter->page_next_link;
}
} while (chapter != p_manager->chapter_list_head);
do
{
for (i=0; i<32; i++)
{
if ((l_entry = chapter->page_index_table[i]) != 0)
{
for (j=0; j<32; j++)
{
if ((l_entry[j].low_entry & C_ENTRY_MASK) == C_ENTRY_LIST_ENTRY)
{
funny_retry = 1;
funny_retry_counter ++;
break;
}
}
if (j != 32)
break;
}
}
if (i != 32)
break;
*/
chapter = chapter->page_next_link;
} while (chapter != p_manager->chapter_list_head);
do
{
if (chapter->base_mask != (LONG) -1)
{
retry_flag = 1;
ccode = (chapter->chapter_flags & CHAPTER_SPECIAL_BIT) ? vm256_special_alloc((uint32 **) &table) : vm256_alloc((uint32 **) &table);
if (ccode != 0)
{
vmdbg panic("error returned from vm256_alloc");
set_flags(flags);
return(-1);
}
// alock_write_lock(chapter->rwlock);
cli();
spin_lock((uint32 *) chapter->rwlock);
for (i=0; i<32; i++)
{
if ((chapter->base_mask & (1 << i)) == 0)
break;
}
if (i < 32)
{
chapter->page_count = (i+1) * 32;
chapter->base_mask |= 1 << i;
chapter->page_index_table[i] = table;
base = (chapter->chapter_index << 10) + (i * 32);
SetDataD((uint32 *) table, C_ENTRY_OUT_OF_BOUNDS, 64);
for (j=0; j<=32-p_manager->page_size; j+=p_manager->page_skip)
{
p_manager->total_page_count ++;
for (k=1; k<p_manager->page_size; k++)
{
table[j + k].low_entry = C_ENTRY_LIST_EXTENSION;
table[j + k].high_entry = 0;
}
table[j].low_entry = C_ENTRY_LIST_ENTRY;
table[j].high_entry = 0;
if ((i + j) != 0)
new_index_return(chapter->index_list_head, 0, base + j, chapter_map_entry, chapter);
else
{
table[j].low_entry = -1;
table[j].high_entry = -1;
}
}
}
else
{
if (chapter->chapter_flags & CHAPTER_SPECIAL_BIT)
vm256_special_return((uint32 *) table);
else
vm256_return((uint32 *) table);
}
// alock_write_unlock(chapter->rwlock);
spin_unlock((uint32 *) chapter->rwlock);
}
chapter = chapter->page_next_link;
} while (chapter != p_manager->chapter_list_head);
}
set_flags(flags);
return(PAGE_LOGICAL_ALLOCATION_ERROR);
}
uint32 chapter_unmap_temp_counter_1 = 0;
uint32 chapter_unmap_temp_counter_2 = 0;
uint32 chapter_unmap_backoff_counter = 0;
void chapter_unmap_queued_pages(
page_node *p_manager)
{
uint32 i, j, k;
uint32 c_index;
uint32 l_index;
uint32 list_count;
uint32 *logical_address;
uint32 *base_address;
uint32 flags = get_flags_no_cli();
quad_entry *l_entry;
chapter_node *chapter;
if ((chapter = p_manager->chapter_list_head) != 0)
{
do
{
new_list_list_count(chapter->special_unmap_list_head, &list_count);
if (list_count > 0)
{
// alock_write_lock(chapter->rwlock);
cli();
spin_lock((uint32 *) chapter->rwlock);
for (i=0; i<active_processor_count; i++)
{
// while (alock_read_check(chapter->rwlock, i) != 0)
// chapter_unmap_backoff_counter ++;
while (new_list_alloc(chapter->special_unmap_list_head, i, &logical_address) == 0)
{
logical_address -= 32;
c_index = ((uint32) logical_address >> LOGICAL_PAGE_SHIFT) & 0x3FF;
vmdbg if (chapter->page_index_table[c_index >> 5] == 0)
vmdbg panic("integrity check in chaper_unmap_queued_pages 1");
l_entry = &chapter->page_index_table[c_index >> 5][c_index & 0x1F];
for (k=0; k<p_manager->page_size; k++, l_entry++)
{
if ((l_entry->low_entry & C_ENTRY_MASK) == C_ENTRY_MAPPED)
{
MMU_page_unmap((uint32)&logical_address[k * 1024] >> 12, &c_index, 0);
vmdbg if ((c_index >> 12) == 0)
vmdbg panic("integrity check in chaper_unmap_queued_pages 2");
mpt_return_page(c_index >> 12);
}
if (k==0)
{
l_entry->low_entry = C_ENTRY_LIST_TEMPORARY;
l_entry->high_entry = chapter->special_index_list_head->low_entry;
chapter->special_index_list_head->low_entry = (uint32) logical_address >> LOGICAL_PAGE_SHIFT;
}
else
{
l_entry->low_entry = C_ENTRY_LIST_EXTENSION;
l_entry->high_entry = 0;
}
}
if (p_manager->page_flags & PAGE_SUB_OWNER_BIT)
{
l_entry->low_entry = C_ENTRY_OUT_OF_BOUNDS;
l_entry->high_entry = 0;
}
}
}
cli();
if (VMFlushTLB() != 0)
panic("FlushTLB failure");
sti();
if (chapter->special_index_list_head->low_entry != 0)
{
while ((l_index = chapter->special_index_list_head->low_entry) != 0)
// while (new_index_alloc(chapter->special_index_list_head, 0, &p_index, &p_entry, chapter_map_entry, chapter) == 0)
{
chapter_map_entry(&l_entry, l_index, chapter);
chapter->special_index_list_head->low_entry = l_entry->high_entry;
l_entry->low_entry = C_ENTRY_LIST_ENTRY;
l_entry->high_entry = 0;
chapter_unmap_temp_counter_2 ++;
new_index_return(chapter->index_list_head, 0, l_index, chapter_map_entry, chapter);
}
}
// alock_write_unlock(chapter->rwlock);
// alock_write_lock(chapter->rwlock);
// alock_write_unlock(chapter->rwlock);
spin_unlock((uint32 *) chapter->rwlock);
set_flags(flags);
}
chapter = chapter->page_next_link;
} while (chapter != p_manager->chapter_list_head);
}
}
uint32 chapter_queue_unmap_page(
uint32 *logical_address,
page_node *p_manager)
{
uint32 processor_id = 0;
uint32 flags = get_flags_no_cli();
chapter_node *chapter;
if (new_mat_lookup_ccb(&chapter, logical_address) == 0)
{
vmdbg if (chapter->page_link != p_manager)
vmdbg panic("integrity check in chapter_queue_unmap_page");
SetDataD(logical_address, 0x17853548, 64);
// alock_read_lock(chapter->rwlock, &processor_id);
cli();
spin_lock((uint32 *) chapter->rwlock);
new_list_return(chapter->special_unmap_list_head, processor_id, (uint32 *) &logical_address[32]);
// alock_read_unlock(chapter->rwlock, processor_id);
spin_unlock((uint32 *) chapter->rwlock);
set_flags(flags);
return(0);
}
vmdbg panic("invalid address passed to chapter_queue_unmap_page");
set_flags(flags);
return(-1);
}
uint32 chapter_index_return(
uint32 *logical_address,
page_node *p_manager)
{
uint32 k;
uint32 c_index;
uint32 processor_id = 0;
uint32 flags = get_flags_no_cli();
quad_entry *l_entry;
chapter_node *chapter;
if (new_mat_lookup_ccb(&chapter, logical_address) == 0)
{
c_index = ((uint32) logical_address >> LOGICAL_PAGE_SHIFT) & 0x3FF;
// alock_read_lock(chapter->rwlock, &processor_id);