Date: Sun, 31 Jan 2010 14:25:29 +0000 (UTC) From: Robert Noland <rnoland@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r203287 - in head/sys: conf dev/drm modules/drm/drm Message-ID: <201001311425.o0VEPTEo049344@svn.freebsd.org>
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Author: rnoland Date: Sun Jan 31 14:25:29 2010 New Revision: 203287 URL: http://svn.freebsd.org/changeset/base/203287 Log: Import simple drm memory manager. This is required for the VIA driver and at least some parts are needed for GEM. MFC after: 2 weeks Added: head/sys/dev/drm/drm_hashtab.c (contents, props changed) head/sys/dev/drm/drm_hashtab.h (contents, props changed) head/sys/dev/drm/drm_mm.c (contents, props changed) head/sys/dev/drm/drm_mm.h (contents, props changed) head/sys/dev/drm/drm_sman.c (contents, props changed) head/sys/dev/drm/drm_sman.h (contents, props changed) Modified: head/sys/conf/files head/sys/dev/drm/drmP.h head/sys/dev/drm/drm_linux_list.h head/sys/dev/drm/drm_memory.c head/sys/dev/drm/i915_drv.c head/sys/dev/drm/i915_drv.h head/sys/modules/drm/drm/Makefile Modified: head/sys/conf/files ============================================================================== --- head/sys/conf/files Sun Jan 31 14:25:09 2010 (r203286) +++ head/sys/conf/files Sun Jan 31 14:25:29 2010 (r203287) @@ -839,12 +839,15 @@ dev/drm/drm_dma.c optional drm dev/drm/drm_drawable.c optional drm dev/drm/drm_drv.c optional drm dev/drm/drm_fops.c optional drm +dev/drm/drm_hashtab.c optional drm dev/drm/drm_ioctl.c optional drm dev/drm/drm_irq.c optional drm dev/drm/drm_lock.c optional drm dev/drm/drm_memory.c optional drm +dev/drm/drm_mm.c optional drm dev/drm/drm_pci.c optional drm dev/drm/drm_scatter.c optional drm +dev/drm/drm_sman.c optional drm dev/drm/drm_sysctl.c optional drm dev/drm/drm_vm.c optional drm dev/drm/i915_dma.c optional i915drm Modified: head/sys/dev/drm/drmP.h ============================================================================== --- head/sys/dev/drm/drmP.h Sun Jan 31 14:25:09 2010 (r203286) +++ head/sys/dev/drm/drmP.h Sun Jan 31 14:25:29 2010 (r203287) @@ -91,9 +91,9 @@ struct drm_file; #include <sys/bus.h> #include "dev/drm/drm.h" -#include "dev/drm/drm_linux_list.h" #include "dev/drm/drm_atomic.h" #include "dev/drm/drm_internal.h" +#include "dev/drm/drm_linux_list.h" #include <opt_drm.h> #ifdef DRM_DEBUG @@ -147,6 +147,8 @@ MALLOC_DECLARE(DRM_MEM_AGPLISTS); MALLOC_DECLARE(DRM_MEM_CTXBITMAP); MALLOC_DECLARE(DRM_MEM_SGLISTS); MALLOC_DECLARE(DRM_MEM_DRAWABLE); +MALLOC_DECLARE(DRM_MEM_MM); +MALLOC_DECLARE(DRM_MEM_HASHTAB); SYSCTL_DECL(_hw_drm); @@ -193,6 +195,11 @@ typedef void irqreturn_t; #define IRQ_HANDLED /* nothing */ #define IRQ_NONE /* nothing */ +#define unlikely(x) __builtin_expect(!!(x), 0) +#define container_of(ptr, type, member) ({ \ + __typeof( ((type *)0)->member ) *__mptr = (ptr); \ + (type *)( (char *)__mptr - offsetof(type,member) );}) + enum { DRM_IS_NOT_AGP, DRM_IS_AGP, Added: head/sys/dev/drm/drm_hashtab.c ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/sys/dev/drm/drm_hashtab.c Sun Jan 31 14:25:29 2010 (r203287) @@ -0,0 +1,180 @@ +/************************************************************************** + * + * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND. USA. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE + * USE OR OTHER DEALINGS IN THE SOFTWARE. + * + * + **************************************************************************/ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +/* + * Simple open hash tab implementation. + * + * Authors: + * Thomas Hellström <thomas-at-tungstengraphics-dot-com> + */ + +#include "dev/drm/drmP.h" +#include "dev/drm/drm_hashtab.h" + +#include <sys/hash.h> + +int drm_ht_create(struct drm_open_hash *ht, unsigned int order) +{ + ht->size = 1 << order; + ht->order = order; + ht->table = NULL; + ht->table = hashinit(ht->size, DRM_MEM_HASHTAB, &ht->mask); + if (!ht->table) { + DRM_ERROR("Out of memory for hash table\n"); + return -ENOMEM; + } + return 0; +} + +void drm_ht_verbose_list(struct drm_open_hash *ht, unsigned long key) +{ + struct drm_hash_item *entry; + struct drm_hash_item_list *h_list; + unsigned int hashed_key; + int count = 0; + + hashed_key = hash32_buf(&key, sizeof(key), ht->order); + DRM_DEBUG("Key is 0x%08lx, Hashed key is 0x%08x\n", key, hashed_key); + h_list = &ht->table[hashed_key & ht->mask]; + LIST_FOREACH(entry, h_list, head) + DRM_DEBUG("count %d, key: 0x%08lx\n", count++, entry->key); +} + +static struct drm_hash_item * +drm_ht_find_key(struct drm_open_hash *ht, unsigned long key) +{ + struct drm_hash_item *entry; + struct drm_hash_item_list *h_list; + unsigned int hashed_key; + + hashed_key = hash32_buf(&key, sizeof(key), ht->order); + h_list = &ht->table[hashed_key & ht->mask]; + LIST_FOREACH(entry, h_list, head) { + if (entry->key == key) + return entry; + if (entry->key > key) + break; + } + return NULL; +} + + +int drm_ht_insert_item(struct drm_open_hash *ht, struct drm_hash_item *item) +{ + struct drm_hash_item *entry, *parent; + struct drm_hash_item_list *h_list; + unsigned int hashed_key; + unsigned long key = item->key; + + hashed_key = hash32_buf(&key, sizeof(key), ht->order); + h_list = &ht->table[hashed_key & ht->mask]; + parent = NULL; + LIST_FOREACH(entry, h_list, head) { + if (entry->key == key) + return -EINVAL; + if (entry->key > key) + break; + parent = entry; + } + if (parent) { + LIST_INSERT_AFTER(parent, item, head); + } else { + LIST_INSERT_HEAD(h_list, item, head); + } + return 0; +} + +/* + * Just insert an item and return any "bits" bit key that hasn't been + * used before. + */ +int drm_ht_just_insert_please(struct drm_open_hash *ht, struct drm_hash_item *item, + unsigned long seed, int bits, int shift, + unsigned long add) +{ + int ret; + unsigned long mask = (1 << bits) - 1; + unsigned long first, unshifted_key = 0; + + unshifted_key = hash32_buf(&seed, sizeof(seed), unshifted_key); + first = unshifted_key; + do { + item->key = (unshifted_key << shift) + add; + ret = drm_ht_insert_item(ht, item); + if (ret) + unshifted_key = (unshifted_key + 1) & mask; + } while(ret && (unshifted_key != first)); + + if (ret) { + DRM_ERROR("Available key bit space exhausted\n"); + return -EINVAL; + } + return 0; +} + +int drm_ht_find_item(struct drm_open_hash *ht, unsigned long key, + struct drm_hash_item **item) +{ + struct drm_hash_item *entry; + + entry = drm_ht_find_key(ht, key); + if (!entry) + return -EINVAL; + + *item = entry; + return 0; +} + +int drm_ht_remove_key(struct drm_open_hash *ht, unsigned long key) +{ + struct drm_hash_item *entry; + + entry = drm_ht_find_key(ht, key); + if (entry) { + LIST_REMOVE(entry, head); + return 0; + } + return -EINVAL; +} + +int drm_ht_remove_item(struct drm_open_hash *ht, struct drm_hash_item *item) +{ + LIST_REMOVE(item, head); + return 0; +} + +void drm_ht_remove(struct drm_open_hash *ht) +{ + if (ht->table) { + hashdestroy(ht->table, DRM_MEM_HASHTAB, ht->mask); + ht->table = NULL; + } +} Added: head/sys/dev/drm/drm_hashtab.h ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/sys/dev/drm/drm_hashtab.h Sun Jan 31 14:25:29 2010 (r203287) @@ -0,0 +1,68 @@ +/************************************************************************** + * + * Copyright 2006 Tungsten Graphics, Inc., Bismack, ND. USA. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE + * USE OR OTHER DEALINGS IN THE SOFTWARE. + * + * + **************************************************************************/ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +/* + * Simple open hash tab implementation. + * + * Authors: + * Thomas Hellström <thomas-at-tungstengraphics-dot-com> + */ + +#ifndef DRM_HASHTAB_H +#define DRM_HASHTAB_H + +#define drm_hash_entry(_ptr, _type, _member) container_of(_ptr, _type, _member) + +struct drm_hash_item { + LIST_ENTRY(drm_hash_item) head; + unsigned long key; +}; + +struct drm_open_hash { + LIST_HEAD(drm_hash_item_list, drm_hash_item) *table; + unsigned int size; + unsigned int order; + unsigned long mask; +}; + +extern int drm_ht_create(struct drm_open_hash *ht, unsigned int order); +extern int drm_ht_insert_item(struct drm_open_hash *ht, struct drm_hash_item *item); +extern int drm_ht_just_insert_please(struct drm_open_hash *ht, struct drm_hash_item *item, + unsigned long seed, int bits, int shift, + unsigned long add); +extern int drm_ht_find_item(struct drm_open_hash *ht, unsigned long key, struct drm_hash_item **item); + +extern void drm_ht_verbose_list(struct drm_open_hash *ht, unsigned long key); +extern int drm_ht_remove_key(struct drm_open_hash *ht, unsigned long key); +extern int drm_ht_remove_item(struct drm_open_hash *ht, struct drm_hash_item *item); +extern void drm_ht_remove(struct drm_open_hash *ht); + +#endif Modified: head/sys/dev/drm/drm_linux_list.h ============================================================================== --- head/sys/dev/drm/drm_linux_list.h Sun Jan 31 14:25:09 2010 (r203286) +++ head/sys/dev/drm/drm_linux_list.h Sun Jan 31 14:25:29 2010 (r203287) @@ -32,12 +32,15 @@ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); +#ifndef _DRM_LINUX_LIST_H_ +#define _DRM_LINUX_LIST_H_ + struct list_head { struct list_head *next, *prev; }; -/* Cheat, assume the list_head is at the start of the struct */ -#define list_entry(entry, type, member) (type *)(entry) +#define list_entry(ptr, type, member) container_of(ptr,type,member) +#define hlist_entry(ptr, type, member) container_of(ptr,type,member) static __inline__ void INIT_LIST_HEAD(struct list_head *head) { @@ -51,6 +54,14 @@ list_empty(struct list_head *head) { } static __inline__ void +list_add(struct list_head *new, struct list_head *head) { + (head)->next->prev = new; + (new)->next = (head)->next; + (new)->prev = head; + (head)->next = new; +} + +static __inline__ void list_add_tail(struct list_head *entry, struct list_head *head) { (entry)->prev = (head)->prev; (entry)->next = head; @@ -64,6 +75,13 @@ list_del(struct list_head *entry) { (entry)->prev->next = (entry)->next; } +static __inline__ void +list_del_init(struct list_head *entry) { + (entry)->next->prev = (entry)->prev; + (entry)->prev->next = (entry)->next; + INIT_LIST_HEAD(entry); +} + #define list_for_each(entry, head) \ for (entry = (head)->next; entry != head; entry = (entry)->next) @@ -76,3 +94,17 @@ list_del(struct list_head *entry) { entry != head; \ entry = temp, temp = entry->next) +/** + * list_for_each_entry_safe - iterate over list of given type safe against removal of list entry + * @pos: the type * to use as a loop cursor. + * @n: another type * to use as temporary storage + * @head: the head for your list. + * @member: the name of the list_struct within the struct. + */ +#define list_for_each_entry_safe(pos, n, head, member) \ + for (pos = list_entry((head)->next, __typeof(*pos), member), \ + n = list_entry(pos->member.next, __typeof(*pos), member); \ + &pos->member != (head); \ + pos = n, n = list_entry(n->member.next, __typeof(*n), member)) + +#endif /* _DRM_LINUX_LIST_H_ */ Modified: head/sys/dev/drm/drm_memory.c ============================================================================== --- head/sys/dev/drm/drm_memory.c Sun Jan 31 14:25:09 2010 (r203286) +++ head/sys/dev/drm/drm_memory.c Sun Jan 31 14:25:29 2010 (r203287) @@ -60,6 +60,8 @@ MALLOC_DEFINE(DRM_MEM_CTXBITMAP, "drm_ct "DRM CTXBITMAP Data Structures"); MALLOC_DEFINE(DRM_MEM_SGLISTS, "drm_sglists", "DRM SGLISTS Data Structures"); MALLOC_DEFINE(DRM_MEM_DRAWABLE, "drm_drawable", "DRM DRAWABLE Data Structures"); +MALLOC_DEFINE(DRM_MEM_MM, "drm_sman", "DRM MEMORY MANAGER Data Structures"); +MALLOC_DEFINE(DRM_MEM_HASHTAB, "drm_hashtab", "DRM HASHTABLE Data Structures"); void drm_mem_init(void) { Added: head/sys/dev/drm/drm_mm.c ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/sys/dev/drm/drm_mm.c Sun Jan 31 14:25:29 2010 (r203287) @@ -0,0 +1,368 @@ +/************************************************************************** + * + * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE + * USE OR OTHER DEALINGS IN THE SOFTWARE. + * + * + **************************************************************************/ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +/* + * Generic simple memory manager implementation. Intended to be used as a base + * class implementation for more advanced memory managers. + * + * Note that the algorithm used is quite simple and there might be substantial + * performance gains if a smarter free list is implemented. Currently it is just an + * unordered stack of free regions. This could easily be improved if an RB-tree + * is used instead. At least if we expect heavy fragmentation. + * + * Aligned allocations can also see improvement. + * + * Authors: + * Thomas Hellström <thomas-at-tungstengraphics-dot-com> + */ + +#include "dev/drm/drmP.h" +#include "dev/drm/drm_mm.h" + +#define MM_UNUSED_TARGET 4 + +unsigned long drm_mm_tail_space(struct drm_mm *mm) +{ + struct list_head *tail_node; + struct drm_mm_node *entry; + + tail_node = mm->ml_entry.prev; + entry = list_entry(tail_node, struct drm_mm_node, ml_entry); + if (!entry->free) + return 0; + + return entry->size; +} + +int drm_mm_remove_space_from_tail(struct drm_mm *mm, unsigned long size) +{ + struct list_head *tail_node; + struct drm_mm_node *entry; + + tail_node = mm->ml_entry.prev; + entry = list_entry(tail_node, struct drm_mm_node, ml_entry); + if (!entry->free) + return -ENOMEM; + + if (entry->size <= size) + return -ENOMEM; + + entry->size -= size; + return 0; +} + +static struct drm_mm_node *drm_mm_kmalloc(struct drm_mm *mm, int atomic) +{ + struct drm_mm_node *child; + + if (atomic) + child = malloc(sizeof(*child), DRM_MEM_MM, M_NOWAIT); + else + child = malloc(sizeof(*child), DRM_MEM_MM, M_WAITOK); + + if (unlikely(child == NULL)) { + mtx_lock(&mm->unused_lock); + if (list_empty(&mm->unused_nodes)) + child = NULL; + else { + child = + list_entry(mm->unused_nodes.next, + struct drm_mm_node, fl_entry); + list_del(&child->fl_entry); + --mm->num_unused; + } + mtx_unlock(&mm->unused_lock); + } + return child; +} + +int drm_mm_pre_get(struct drm_mm *mm) +{ + struct drm_mm_node *node; + + mtx_lock(&mm->unused_lock); + while (mm->num_unused < MM_UNUSED_TARGET) { + mtx_unlock(&mm->unused_lock); + node = malloc(sizeof(*node), DRM_MEM_MM, M_WAITOK); + mtx_lock(&mm->unused_lock); + + if (unlikely(node == NULL)) { + int ret = (mm->num_unused < 2) ? -ENOMEM : 0; + mtx_unlock(&mm->unused_lock); + return ret; + } + ++mm->num_unused; + list_add_tail(&node->fl_entry, &mm->unused_nodes); + } + mtx_unlock(&mm->unused_lock); + return 0; +} + +static int drm_mm_create_tail_node(struct drm_mm *mm, + unsigned long start, + unsigned long size, int atomic) +{ + struct drm_mm_node *child; + + child = drm_mm_kmalloc(mm, atomic); + if (unlikely(child == NULL)) + return -ENOMEM; + + child->free = 1; + child->size = size; + child->start = start; + child->mm = mm; + + list_add_tail(&child->ml_entry, &mm->ml_entry); + list_add_tail(&child->fl_entry, &mm->fl_entry); + + return 0; +} + +int drm_mm_add_space_to_tail(struct drm_mm *mm, unsigned long size, int atomic) +{ + struct list_head *tail_node; + struct drm_mm_node *entry; + + tail_node = mm->ml_entry.prev; + entry = list_entry(tail_node, struct drm_mm_node, ml_entry); + if (!entry->free) { + return drm_mm_create_tail_node(mm, entry->start + entry->size, + size, atomic); + } + entry->size += size; + return 0; +} + +static struct drm_mm_node *drm_mm_split_at_start(struct drm_mm_node *parent, + unsigned long size, + int atomic) +{ + struct drm_mm_node *child; + + child = drm_mm_kmalloc(parent->mm, atomic); + if (unlikely(child == NULL)) + return NULL; + + INIT_LIST_HEAD(&child->fl_entry); + + child->free = 0; + child->size = size; + child->start = parent->start; + child->mm = parent->mm; + + list_add_tail(&child->ml_entry, &parent->ml_entry); + INIT_LIST_HEAD(&child->fl_entry); + + parent->size -= size; + parent->start += size; + return child; +} + + +struct drm_mm_node *drm_mm_get_block_generic(struct drm_mm_node *node, + unsigned long size, + unsigned alignment, + int atomic) +{ + + struct drm_mm_node *align_splitoff = NULL; + unsigned tmp = 0; + + if (alignment) + tmp = node->start % alignment; + + if (tmp) { + align_splitoff = + drm_mm_split_at_start(node, alignment - tmp, atomic); + if (unlikely(align_splitoff == NULL)) + return NULL; + } + + if (node->size == size) { + list_del_init(&node->fl_entry); + node->free = 0; + } else { + node = drm_mm_split_at_start(node, size, atomic); + } + + if (align_splitoff) + drm_mm_put_block(align_splitoff); + + return node; +} + +/* + * Put a block. Merge with the previous and / or next block if they are free. + * Otherwise add to the free stack. + */ + +void drm_mm_put_block(struct drm_mm_node *cur) +{ + + struct drm_mm *mm = cur->mm; + struct list_head *cur_head = &cur->ml_entry; + struct list_head *root_head = &mm->ml_entry; + struct drm_mm_node *prev_node = NULL; + struct drm_mm_node *next_node; + + int merged = 0; + + if (cur_head->prev != root_head) { + prev_node = + list_entry(cur_head->prev, struct drm_mm_node, ml_entry); + if (prev_node->free) { + prev_node->size += cur->size; + merged = 1; + } + } + if (cur_head->next != root_head) { + next_node = + list_entry(cur_head->next, struct drm_mm_node, ml_entry); + if (next_node->free) { + if (merged) { + prev_node->size += next_node->size; + list_del(&next_node->ml_entry); + list_del(&next_node->fl_entry); + if (mm->num_unused < MM_UNUSED_TARGET) { + list_add(&next_node->fl_entry, + &mm->unused_nodes); + ++mm->num_unused; + } else + free(next_node, DRM_MEM_MM); + } else { + next_node->size += cur->size; + next_node->start = cur->start; + merged = 1; + } + } + } + if (!merged) { + cur->free = 1; + list_add(&cur->fl_entry, &mm->fl_entry); + } else { + list_del(&cur->ml_entry); + if (mm->num_unused < MM_UNUSED_TARGET) { + list_add(&cur->fl_entry, &mm->unused_nodes); + ++mm->num_unused; + } else + free(cur, DRM_MEM_MM); + } +} + +struct drm_mm_node *drm_mm_search_free(const struct drm_mm *mm, + unsigned long size, + unsigned alignment, int best_match) +{ + struct list_head *list; + const struct list_head *free_stack = &mm->fl_entry; + struct drm_mm_node *entry; + struct drm_mm_node *best; + unsigned long best_size; + unsigned wasted; + + best = NULL; + best_size = ~0UL; + + list_for_each(list, free_stack) { + entry = list_entry(list, struct drm_mm_node, fl_entry); + wasted = 0; + + if (entry->size < size) + continue; + + if (alignment) { + register unsigned tmp = entry->start % alignment; + if (tmp) + wasted += alignment - tmp; + } + + if (entry->size >= size + wasted) { + if (!best_match) + return entry; + if (size < best_size) { + best = entry; + best_size = entry->size; + } + } + } + + return best; +} + +int drm_mm_clean(struct drm_mm * mm) +{ + struct list_head *head = &mm->ml_entry; + + return (head->next->next == head); +} + +int drm_mm_init(struct drm_mm * mm, unsigned long start, unsigned long size) +{ + INIT_LIST_HEAD(&mm->ml_entry); + INIT_LIST_HEAD(&mm->fl_entry); + INIT_LIST_HEAD(&mm->unused_nodes); + mm->num_unused = 0; + mtx_init(&mm->unused_lock, "drm_unused", NULL, MTX_DEF); + + return drm_mm_create_tail_node(mm, start, size, 0); +} + +void drm_mm_takedown(struct drm_mm * mm) +{ + struct list_head *bnode = mm->fl_entry.next; + struct drm_mm_node *entry; + struct drm_mm_node *next; + + entry = list_entry(bnode, struct drm_mm_node, fl_entry); + + if (entry->ml_entry.next != &mm->ml_entry || + entry->fl_entry.next != &mm->fl_entry) { + DRM_ERROR("Memory manager not clean. Delaying takedown\n"); + return; + } + + list_del(&entry->fl_entry); + list_del(&entry->ml_entry); + free(entry, DRM_MEM_MM); + + mtx_lock(&mm->unused_lock); + list_for_each_entry_safe(entry, next, &mm->unused_nodes, fl_entry) { + list_del(&entry->fl_entry); + free(entry, DRM_MEM_MM); + --mm->num_unused; + } + mtx_unlock(&mm->unused_lock); + + mtx_destroy(&mm->unused_lock); + + KASSERT(mm->num_unused == 0, ("num_unused != 0")); +} Added: head/sys/dev/drm/drm_mm.h ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/sys/dev/drm/drm_mm.h Sun Jan 31 14:25:29 2010 (r203287) @@ -0,0 +1,100 @@ +/************************************************************************** + * + * Copyright 2006-2008 Tungsten Graphics, Inc., Cedar Park, TX. USA. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE + * USE OR OTHER DEALINGS IN THE SOFTWARE. + * + * + **************************************************************************/ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +/* + * Authors: + * Thomas Hellstrom <thomas-at-tungstengraphics-dot-com> + */ + +#ifndef _DRM_MM_H_ +#define _DRM_MM_H_ + +#include "dev/drm/drm_linux_list.h" + +struct drm_mm_node { + struct list_head fl_entry; + struct list_head ml_entry; + int free; + unsigned long start; + unsigned long size; + struct drm_mm *mm; + void *private; +}; + +struct drm_mm { + struct list_head fl_entry; + struct list_head ml_entry; + struct list_head unused_nodes; + int num_unused; + struct mtx unused_lock; +}; + +/* + * Basic range manager support (drm_mm.c) + */ +extern struct drm_mm_node *drm_mm_get_block_generic(struct drm_mm_node *node, + unsigned long size, + unsigned alignment, + int atomic); +static inline struct drm_mm_node *drm_mm_get_block(struct drm_mm_node *parent, + unsigned long size, + unsigned alignment) +{ + return drm_mm_get_block_generic(parent, size, alignment, 0); +} +static inline struct drm_mm_node *drm_mm_get_block_atomic(struct drm_mm_node *parent, + unsigned long size, + unsigned alignment) +{ + return drm_mm_get_block_generic(parent, size, alignment, 1); +} +extern void drm_mm_put_block(struct drm_mm_node *cur); +extern struct drm_mm_node *drm_mm_search_free(const struct drm_mm *mm, + unsigned long size, + unsigned alignment, + int best_match); +extern int drm_mm_init(struct drm_mm *mm, unsigned long start, + unsigned long size); +extern void drm_mm_takedown(struct drm_mm *mm); +extern int drm_mm_clean(struct drm_mm *mm); +extern unsigned long drm_mm_tail_space(struct drm_mm *mm); +extern int drm_mm_remove_space_from_tail(struct drm_mm *mm, + unsigned long size); +extern int drm_mm_add_space_to_tail(struct drm_mm *mm, + unsigned long size, int atomic); +extern int drm_mm_pre_get(struct drm_mm *mm); + +static inline struct drm_mm *drm_get_mm(struct drm_mm_node *block) +{ + return block->mm; +} + +#endif Added: head/sys/dev/drm/drm_sman.c ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/sys/dev/drm/drm_sman.c Sun Jan 31 14:25:29 2010 (r203287) @@ -0,0 +1,352 @@ +/************************************************************************** + * + * Copyright 2006 Tungsten Graphics, Inc., Bismarck., ND., USA. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE + * USE OR OTHER DEALINGS IN THE SOFTWARE. + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * + **************************************************************************/ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +/* + * Simple memory manager interface that keeps track on allocate regions on a + * per "owner" basis. All regions associated with an "owner" can be released + * with a simple call. Typically if the "owner" exists. The owner is any + * "unsigned long" identifier. Can typically be a pointer to a file private + * struct or a context identifier. + * + * Authors: + * Thomas Hellström <thomas-at-tungstengraphics-dot-com> + */ + +#include "dev/drm/drmP.h" +#include "dev/drm/drm_sman.h" + +struct drm_owner_item { + struct drm_hash_item owner_hash; + struct list_head sman_list; + struct list_head mem_blocks; +}; + +void drm_sman_takedown(struct drm_sman * sman) +{ + drm_ht_remove(&sman->user_hash_tab); + drm_ht_remove(&sman->owner_hash_tab); + if (sman->mm) + drm_free(sman->mm, sman->num_managers * sizeof(*sman->mm), + DRM_MEM_MM); +} + +int +drm_sman_init(struct drm_sman * sman, unsigned int num_managers, + unsigned int user_order, unsigned int owner_order) +{ + int ret = 0; + + sman->mm = (struct drm_sman_mm *) drm_calloc(num_managers, + sizeof(*sman->mm), DRM_MEM_MM); + if (!sman->mm) { + ret = -ENOMEM; + goto out; + } + sman->num_managers = num_managers; + INIT_LIST_HEAD(&sman->owner_items); + ret = drm_ht_create(&sman->owner_hash_tab, owner_order); + if (ret) + goto out1; + ret = drm_ht_create(&sman->user_hash_tab, user_order); + if (!ret) + goto out; + + drm_ht_remove(&sman->owner_hash_tab); +out1: + drm_free(sman->mm, num_managers * sizeof(*sman->mm), DRM_MEM_MM); +out: + return ret; +} + +static void *drm_sman_mm_allocate(void *private, unsigned long size, + unsigned alignment) +{ + struct drm_mm *mm = (struct drm_mm *) private; + struct drm_mm_node *tmp; + + tmp = drm_mm_search_free(mm, size, alignment, 1); + if (!tmp) { + return NULL; + } + tmp = drm_mm_get_block(tmp, size, alignment); + return tmp; +} + +static void drm_sman_mm_free(void *private, void *ref) +{ + struct drm_mm_node *node = (struct drm_mm_node *) ref; + + drm_mm_put_block(node); +} + +static void drm_sman_mm_destroy(void *private) +{ + struct drm_mm *mm = (struct drm_mm *) private; + drm_mm_takedown(mm); + drm_free(mm, sizeof(*mm), DRM_MEM_MM); +} + +static unsigned long drm_sman_mm_offset(void *private, void *ref) +{ + struct drm_mm_node *node = (struct drm_mm_node *) ref; + return node->start; +} + +int +drm_sman_set_range(struct drm_sman * sman, unsigned int manager, + unsigned long start, unsigned long size) +{ + struct drm_sman_mm *sman_mm; + struct drm_mm *mm; + int ret; + + KASSERT(manager < sman->num_managers, ("Invalid manager")); + + sman_mm = &sman->mm[manager]; + mm = malloc(sizeof(*mm), DRM_MEM_MM, M_WAITOK | M_ZERO); + if (!mm) { + return -ENOMEM; + } + sman_mm->private = mm; + ret = drm_mm_init(mm, start, size); *** DIFF OUTPUT TRUNCATED AT 1000 LINES ***
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