6 * Copyright (C) 1999-2004 Samuel Rydh (samuel@ibrium.se)
7 * Copyright (C) 2004 Stefan Reinauer
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation
16 #include "libopenbios/bindings.h"
17 #include "libopenbios/ofmem.h"
19 /* Default size of memory allocated for each of the MMU properties (in bytes) */
20 #define OFMEM_DEFAULT_PROP_SIZE 2048
23 * define OFMEM_FILL_RANGE to claim any unclaimed virtual and
24 * physical memory in the range for ofmem_map
26 * TODO: remove this macro and wrapped code if not needed by implementations
28 //#define OFMEM_FILL_RANGE
31 static inline size_t align_size(size_t x, size_t a)
33 return (x + a - 1) & ~(a - 1);
36 static inline phys_addr_t align_ptr(uintptr_t x, size_t a)
38 return (x + a - 1) & ~(a - 1);
41 static ucell get_ram_size( void )
43 ofmem_t *ofmem = ofmem_arch_get_private();
44 return ofmem->ramsize;
47 /************************************************************************/
49 /************************************************************************/
53 print_range( range_t *r, const char *str )
55 printk("--- Range %s ---\n", str );
57 printk("%p : " FMT_plx " - " FMT_plx "\n", r, r->start, r->start + r->size - 1);
62 print_phys_range(void)
64 ofmem_t *ofmem = ofmem_arch_get_private();
65 print_range( ofmem->phys_range, "phys" );
69 print_virt_range(void)
71 ofmem_t *ofmem = ofmem_arch_get_private();
72 print_range( ofmem->virt_range, "virt" );
78 ofmem_t *ofmem = ofmem_arch_get_private();
79 translation_t *t = ofmem->trans;
81 printk("--- Translations ---\n");
83 printk("%p : " FMT_ucellx " -> " FMT_plx " [size " FMT_ucellx "]\n", t, t->virt, t->phys, t->size);
88 /************************************************************************/
89 /* OF private allocations */
90 /************************************************************************/
92 int ofmem_posix_memalign( void **memptr, size_t alignment, size_t size )
94 ofmem_t *ofmem = ofmem_arch_get_private();
95 alloc_desc_t *d, **pp;
103 if( !ofmem->next_malloc )
104 ofmem->next_malloc = (char*)ofmem_arch_get_malloc_base();
106 size = align_size(size + sizeof(alloc_desc_t), alignment);
108 /* look in the freelist */
109 for( pp=&ofmem->mfree; *pp && (**pp).size < size; pp = &(**pp).next ) {
112 /* waste at most 4K by taking an entry from the freelist */
113 if( *pp && (**pp).size > size + 0x1000 ) {
114 /* Alignment should be on physical not virtual address */
115 pa = va2pa((uintptr_t)*pp + sizeof(alloc_desc_t));
116 pa = align_ptr(pa, alignment);
117 ret = (void *)pa2va(pa);
119 memset( ret, 0, (**pp).size - sizeof(alloc_desc_t) );
126 top = ofmem_arch_get_heap_top();
128 /* Alignment should be on physical not virtual address */
129 pa = va2pa((uintptr_t)ofmem->next_malloc + sizeof(alloc_desc_t));
130 pa = align_ptr(pa, alignment);
131 ret = (void *)pa2va(pa);
133 if( pointer2cell(ret) + size > top ) {
134 printk("out of malloc memory (%x)!\n", size );
138 d = (alloc_desc_t*)((uintptr_t)ret - sizeof(alloc_desc_t));
139 ofmem->next_malloc += size;
144 memset( ret, 0, size - sizeof(alloc_desc_t) );
150 void* ofmem_malloc( size_t size )
155 res = ofmem_posix_memalign( &memptr, CONFIG_OFMEM_MALLOC_ALIGN, size );
165 void ofmem_free( void *ptr )
167 ofmem_t *ofmem = ofmem_arch_get_private();
168 alloc_desc_t **pp, *d;
170 /* it is legal to free NULL pointers (size zero allocations) */
174 d = (alloc_desc_t*)((char *)ptr - sizeof(alloc_desc_t));
175 d->next = ofmem->mfree;
177 /* insert in the (sorted) freelist */
178 for( pp=&ofmem->mfree; *pp && (**pp).size < d->size ; pp = &(**pp).next ) {
185 void* ofmem_realloc( void *ptr, size_t size )
187 alloc_desc_t *d = (alloc_desc_t*)((char *)ptr - sizeof(alloc_desc_t));
191 return malloc( size );
197 memcpy( p, ptr, MIN(d->size - sizeof(alloc_desc_t),size) );
203 /************************************************************************/
204 /* "translations" and "available" property tracking */
205 /************************************************************************/
207 static int trans_prop_size = 0, phys_range_prop_size = 0, virt_range_prop_size = 0;
208 static int trans_prop_used = 0, phys_range_prop_used = 0, virt_range_prop_used = 0;
209 static ucell *trans_prop, *phys_range_prop, *virt_range_prop;
212 ofmem_set_property( phandle_t ph, const char *name, const char *buf, int len )
214 /* This is very similar to set_property() in libopenbios/bindings.c but allows
215 us to set the property pointer directly, rather than having to copy it
216 into the Forth dictonary every time we update the memory properties */
218 printk("ofmem_set_property: NULL phandle\n");
221 PUSH(pointer2cell(buf));
225 fword("encode-property");
228 phandle_t s_phandle_memory = 0;
229 phandle_t s_phandle_mmu = 0;
231 static void ofmem_update_mmu_translations( void )
233 ofmem_t *ofmem = ofmem_arch_get_private();
235 int ncells, prop_used, prop_size;
237 if (s_phandle_mmu == 0)
240 for( t = ofmem->trans, ncells = 0; t ; t=t->next, ncells++ ) {
243 /* Get the current number of bytes required for the MMU translation property */
244 prop_used = ncells * sizeof(ucell) * ofmem_arch_get_translation_entry_size();
246 if (prop_used > trans_prop_size) {
248 /* The property doesn't fit within the existing space, so keep doubling it
250 prop_size = trans_prop_size;
251 while (prop_size < prop_used) {
255 /* Allocate the new memory and copy all of the existing information across */
256 trans_prop = realloc(trans_prop, prop_size);
257 trans_prop_size = prop_size;
258 trans_prop_used = prop_used;
261 if (trans_prop == NULL) {
263 printk("Unable to allocate memory for translations property!\n");
267 /* Call architecture-specific routines to generate translation entries */
268 for( t = ofmem->trans, ncells = 0 ; t ; t=t->next ) {
269 ofmem_arch_create_translation_entry(&trans_prop[ncells], t);
270 ncells += ofmem_arch_get_translation_entry_size();
273 ofmem_set_property(s_phandle_mmu, "translations",
274 (char*)trans_prop, ncells * sizeof(trans_prop[0]));
279 static void ofmem_update_memory_available( phandle_t ph, range_t *range,
280 ucell **mem_prop, int *mem_prop_size, int *mem_prop_used, u64 top_address )
283 int ncells, prop_used, prop_size;
287 if (s_phandle_memory == 0)
290 /* count phys_range list entries */
291 for( r = range, ncells = 0; r ; r=r->next, ncells++ ) {
294 /* inverse of phys_range list could take 2 or more additional cells for the tail
295 For /memory, physical addresses may be wider than one ucell. */
296 prop_used = (ncells + 1) * sizeof(ucell) * ofmem_arch_get_available_entry_size(ph) + 1;
298 if (prop_used > *mem_prop_size) {
300 /* The property doesn't fit within the existing space, so keep doubling it
302 prop_size = *mem_prop_size;
303 while (prop_size < prop_used) {
307 /* Allocate the new memory and copy all of the existing information across */
308 *mem_prop = realloc(*mem_prop, prop_size);
309 *mem_prop_size = prop_size;
310 *mem_prop_used = prop_used;
313 if (*mem_prop == NULL) {
315 printk("Unable to allocate memory for memory range property!\n");
323 for (r = range; r; r=r->next) {
324 if (r->start >= top_address) {
328 size = r->start - start;
330 ofmem_arch_create_available_entry(ph, &prop[ncells], start, size);
331 ncells += ofmem_arch_get_available_entry_size(ph);
333 start = r->start + r->size;
337 if ((start - 1) < top_address) {
338 ofmem_arch_create_available_entry(ph, &prop[ncells], start, top_address - start + 1);
339 ncells += ofmem_arch_get_available_entry_size(ph);
342 ofmem_set_property(ph, "available",
343 (char*)prop, ncells * sizeof(prop[0]));
346 static void ofmem_update_translations( void )
348 ofmem_t *ofmem = ofmem_arch_get_private();
350 ofmem_update_memory_available(s_phandle_memory, ofmem->phys_range,
351 &phys_range_prop, &phys_range_prop_size, &phys_range_prop_used, get_ram_size() - 1);
352 ofmem_update_memory_available(s_phandle_mmu, ofmem->virt_range,
353 &virt_range_prop, &virt_range_prop_size, &virt_range_prop_used, (ucell)-1);
354 ofmem_update_mmu_translations();
358 /************************************************************************/
359 /* client interface */
360 /************************************************************************/
362 static int is_free( phys_addr_t ea, ucell size, range_t *r )
366 for( ; r ; r=r->next ) {
367 if( r->start + r->size - 1 >= ea && r->start <= ea )
369 if( r->start >= ea && r->start <= ea + size - 1 )
375 static void add_entry_( phys_addr_t ea, ucell size, range_t **r )
379 for( ; *r && (**r).start < ea; r=&(**r).next ) {
382 nr = (range_t*)malloc( sizeof(range_t) );
389 static int add_entry( phys_addr_t ea, ucell size, range_t **r )
391 if( !is_free( ea, size, *r ) ) {
392 OFMEM_TRACE("add_entry: range not free!\n");
395 add_entry_( ea, size, r );
399 #if defined(OFMEM_FILL_RANGE)
400 static void join_ranges( range_t **rr )
402 range_t *n, *r = *rr;
407 if( r->start + r->size - 1 >= n->start -1 ) {
408 int s = n->size + (n->start - r->start - r->size);
419 static void fill_range( phys_addr_t ea, ucell size, range_t **rr )
421 add_entry_( ea, size, rr );
426 static ucell find_area( ucell align, ucell size, range_t *r,
427 phys_addr_t min, phys_addr_t max, int reverse )
429 phys_addr_t base = min;
431 ucell old_align = align;
434 if( (align < PAGE_SIZE) ) {
436 /* Minimum alignment is page size */
439 OFMEM_TRACE("warning: bad alignment " FMT_ucellx " rounded up to " FMT_ucellx "\n", old_align, align);
442 if( (align & (align-1)) ) {
444 /* As per IEEE1275 specification, round up to the nearest power of 2 */
446 for (i = 1; i < sizeof(ucell) * 8; i<<=1) {
451 OFMEM_TRACE("warning: bad alignment " FMT_ucellx " rounded up to " FMT_ucellx "\n", old_align, align);
454 base = reverse ? max - size : min;
455 r2 = reverse ? NULL : r;
459 base = (base + align - 1) & ~(align-1);
462 if( base + size - 1 >= max -1 )
465 if( base > max - size )
467 base -= base & (align-1);
469 if( is_free( base, size, r ) )
475 base = r2->start + r2->size;
480 for( rp=r; rp && rp->next != r2 ; rp=rp->next ) {
486 base = r2->start - size;
492 static phys_addr_t ofmem_claim_phys_( phys_addr_t phys, ucell size, ucell align,
493 phys_addr_t min, phys_addr_t max, int reverse )
495 ofmem_t *ofmem = ofmem_arch_get_private();
497 if( !is_free( phys, size, ofmem->phys_range ) ) {
498 OFMEM_TRACE("Non-free physical memory claimed!\n");
501 add_entry( phys, size, &ofmem->phys_range );
502 ofmem_update_translations();
505 phys = find_area( align, size, ofmem->phys_range, min, max, reverse );
507 printk("ofmem_claim_phys - out of space (failed request for " FMT_ucellx " bytes)\n", size);
510 add_entry( phys, size, &ofmem->phys_range );
512 ofmem_update_translations();
517 /* if align != 0, phys is ignored. Returns -1 on error */
518 phys_addr_t ofmem_claim_phys( phys_addr_t phys, ucell size, ucell align )
520 OFMEM_TRACE("ofmem_claim_phys phys=" FMT_plx " size=" FMT_ucellx
521 " align=" FMT_ucellx "\n",
524 return ofmem_claim_phys_( phys, size, align, 0, get_ram_size(), 1 );
527 static ucell ofmem_claim_virt_( ucell virt, ucell size, ucell align,
528 ucell min, ucell max, int reverse )
530 ofmem_t *ofmem = ofmem_arch_get_private();
532 if( !is_free( virt, size, ofmem->virt_range ) ) {
533 OFMEM_TRACE("Non-free virtual memory claimed!\n");
536 add_entry( virt, size, &ofmem->virt_range );
537 ofmem_update_translations();
541 virt = find_area( align, size, ofmem->virt_range, min, max, reverse );
543 printk("ofmem_claim_virt - out of space (failed request for " FMT_ucellx " bytes)\n", size);
546 add_entry( virt, size, &ofmem->virt_range );
548 ofmem_update_translations();
553 ucell ofmem_claim_virt( ucell virt, ucell size, ucell align )
555 OFMEM_TRACE("ofmem_claim_virt virt=" FMT_ucellx " size=" FMT_ucellx
556 " align=" FMT_ucellx "\n",
559 /* printk("+ ofmem_claim virt %08lx %lx %ld\n", virt, size, align ); */
560 return ofmem_claim_virt_( virt, size, align,
561 get_ram_size(), ofmem_arch_get_virt_top(), 1 );
564 static ucell ofmem_claim_io_( ucell virt, ucell size, ucell align,
565 ucell min, ucell max, int reverse )
567 ofmem_t *ofmem = ofmem_arch_get_private();
569 if( !is_free( virt, size, ofmem->io_range ) ) {
570 OFMEM_TRACE("Non-free I/O memory claimed!\n");
573 add_entry( virt, size, &ofmem->io_range );
577 virt = find_area( align, size, ofmem->io_range, min, max, reverse );
579 printk("ofmem_claim_io - out of space (failed request for " FMT_ucellx " bytes)\n", size);
582 add_entry( virt, size, &ofmem->io_range );
586 ucell ofmem_claim_io( ucell virt, ucell size, ucell align )
588 /* Claim a section of memory from the I/O range */
589 return ofmem_claim_io_( virt, size, align,
590 ofmem_arch_get_iomem_base(), ofmem_arch_get_iomem_top(), 0 );
593 /* if align != 0, phys is ignored. Returns -1 on error */
594 phys_addr_t ofmem_retain( phys_addr_t phys, ucell size, ucell align )
596 retain_t *retained = ofmem_arch_get_retained();
597 phys_addr_t retain_phys;
599 OFMEM_TRACE("ofmem_retain phys=" FMT_plx " size=" FMT_ucellx
600 " align=" FMT_ucellx "\n",
603 retain_phys = ofmem_claim_phys_( phys, size, align, 0, get_ram_size(), 1 /* reverse */ );
605 /* Add to the retain_phys_range list */
606 retained->retain_phys_range[retained->numentries].next = NULL;
607 retained->retain_phys_range[retained->numentries].start = retain_phys;
608 retained->retain_phys_range[retained->numentries].size = size;
609 retained->numentries++;
614 /* allocate both physical and virtual space and add a translation */
615 ucell ofmem_claim( ucell addr, ucell size, ucell align )
617 ofmem_t *ofmem = ofmem_arch_get_private();
620 ucell offs = addr & (PAGE_SIZE - 1);
622 OFMEM_TRACE("ofmem_claim " FMT_ucellx " " FMT_ucellx " " FMT_ucellx "\n", addr, size, align );
625 if( is_free(addr, size, ofmem->virt_range) &&
626 is_free(addr, size, ofmem->phys_range) ) {
627 ofmem_claim_phys_( addr, size, 0, 0, 0, 0 );
628 ofmem_claim_virt_( addr, size, 0, 0, 0, 0 );
631 OFMEM_TRACE("**** ofmem_claim failure ***!\n");
635 if( align < PAGE_SIZE )
637 phys = ofmem_claim_phys_( -1, size, align, 0, get_ram_size(), 1 /* reverse */ );
638 virt = ofmem_claim_virt_( phys, size, 0, 0, 0, 0 );
639 if( phys == -1 || virt == -1 ) {
640 OFMEM_TRACE("ofmem_claim failed\n");
643 /* printk("...phys = %08lX, virt = %08lX, size = %08lX\n", phys, virt, size ); */
647 if( phys & (PAGE_SIZE - 1) ) {
648 size += (phys & (PAGE_SIZE - 1));
649 virt -= (phys & (PAGE_SIZE - 1));
652 if( size & (PAGE_SIZE - 1) )
653 size = (size + (PAGE_SIZE - 1)) & PAGE_MASK;
655 /* printk("...free memory found... phys: %08lX, virt: %08lX, size %lX\n", phys, virt, size ); */
656 ofmem_map( phys, virt, size, -1 );
661 /************************************************************************/
662 /* keep track of ea -> phys translations */
663 /************************************************************************/
665 static void split_trans( ucell virt )
667 ofmem_t *ofmem = ofmem_arch_get_private();
668 translation_t *t, *t2;
670 for( t=ofmem->trans; t; t=t->next ) {
671 if( virt > t->virt && virt < t->virt + t->size-1 ) {
672 t2 = (translation_t*)malloc( sizeof(translation_t) );
674 t2->size = t->size - (virt - t->virt);
675 t->size = virt - t->virt;
676 t2->phys = t->phys + t->size;
684 int ofmem_map_page_range( phys_addr_t phys, ucell virt, ucell size, ucell mode )
686 ofmem_t *ofmem = ofmem_arch_get_private();
687 translation_t *t, **tt;
689 OFMEM_TRACE("ofmem_map_page_range " FMT_ucellx
690 " -> " FMT_plx " " FMT_ucellx " mode " FMT_ucellx "\n",
691 virt, phys, size, mode );
694 split_trans( virt + size );
696 /* detect remappings */
697 for( t=ofmem->trans; t; ) {
698 if( virt == t->virt || (virt < t->virt && virt + size > t->virt )) {
699 if( t->phys + virt - t->virt != phys ) {
700 OFMEM_TRACE("mapping altered virt=" FMT_ucellx ")\n", t->virt );
701 } else if( t->mode != mode ){
702 OFMEM_TRACE("mapping mode altered virt=" FMT_ucellx
703 " old mode=" FMT_ucellx " new mode=" FMT_ucellx "\n",
704 t->virt, t->mode, mode);
707 for( tt=&ofmem->trans; *tt != t ; tt=&(**tt).next ) {
712 /* really unmap these pages */
713 ofmem_arch_unmap_pages(t->virt, t->size);
724 for( tt=&ofmem->trans; *tt && (**tt).virt < virt ; tt=&(**tt).next ) {
727 t = (translation_t*)malloc( sizeof(translation_t) );
735 ofmem_update_translations();
740 static int unmap_page_range( ucell virt, ucell size )
742 ofmem_t *ofmem = ofmem_arch_get_private();
743 translation_t **plink;
745 /* make sure there is exactly one matching translation entry */
748 split_trans( virt + size );
750 /* find and unlink entries in range */
751 plink = &ofmem->trans;
753 while (*plink && (*plink)->virt < virt+size) {
754 translation_t **plinkentry = plink;
755 translation_t *t = *plink;
760 if (t->virt >= virt && t->virt + t->size <= virt+size) {
763 *plinkentry = t->next;
765 OFMEM_TRACE("unmap_page_range found "
766 FMT_ucellx " -> " FMT_plx " " FMT_ucellx
767 " mode " FMT_ucellx "\n",
768 t->virt, t->phys, t->size, t->mode );
770 // really map these pages
771 ofmem_arch_unmap_pages(t->virt, t->size);
777 ofmem_update_translations();
782 int ofmem_map( phys_addr_t phys, ucell virt, ucell size, ucell mode )
784 /* printk("+ofmem_map: %08lX --> %08lX (size %08lX, mode 0x%02X)\n",
785 virt, phys, size, mode ); */
787 if( (phys & (PAGE_SIZE - 1)) || (virt & (PAGE_SIZE - 1)) || (size & (PAGE_SIZE - 1)) ) {
789 OFMEM_TRACE("ofmem_map: Bad parameters ("
790 FMT_plx " " FMT_ucellx " " FMT_ucellx ")\n",
795 size = (size + (PAGE_SIZE - 1)) & PAGE_MASK;
798 #if defined(OFMEM_FILL_RANGE)
800 ofmem_t *ofmem = ofmem_arch_get_private();
801 /* claim any unclaimed virtual memory in the range */
802 fill_range( virt, size, &ofmem->virt_range );
803 /* hmm... we better claim the physical range too */
804 fill_range( phys, size, &ofmem->phys_range );
809 mode = ofmem_arch_default_translation_mode(phys);
812 /* install translations */
813 ofmem_map_page_range(phys, virt, size, mode);
815 /* allow arch to map the pages */
816 ofmem_arch_map_pages(phys, virt, size, mode);
821 int ofmem_unmap( ucell virt, ucell size )
823 OFMEM_TRACE("ofmem_unmap " FMT_ucellx " " FMT_ucellx "\n",
826 if( (virt & (PAGE_SIZE - 1)) || (size & (PAGE_SIZE - 1)) ) {
827 /* printk("ofmem_unmap: Bad parameters (%08lX %08lX)\n",
830 size = (size + (PAGE_SIZE - 1)) & PAGE_MASK;
833 /* remove translations and unmap pages */
834 unmap_page_range(virt, size);
839 ucell ofmem_map_io( phys_addr_t phys, ucell size )
841 /* Claim virtual memory from the I/O range and map the page-aligned
842 physical address phys to it, returning the newly allocated
848 off = phys & (PAGE_SIZE - 1);
849 npages = (off + size - 1) / PAGE_SIZE + 1;
850 phys &= ~(PAGE_SIZE - 1);
852 virt = ofmem_claim_io(-1, npages * PAGE_SIZE, PAGE_SIZE);
854 mode = ofmem_arch_io_translation_mode(off);
856 ofmem_map_page_range(phys, virt, npages * PAGE_SIZE, mode);
857 ofmem_arch_map_pages(phys, virt, npages * PAGE_SIZE, mode);
862 /* virtual -> physical. */
863 phys_addr_t ofmem_translate( ucell virt, ucell *mode )
865 ofmem_t *ofmem = ofmem_arch_get_private();
868 for( t=ofmem->trans; t && t->virt <= virt ; t=t->next ) {
870 if( t->virt + t->size - 1 < virt )
872 offs = virt - t->virt;
874 return t->phys + offs;
877 /*printk("ofmem_translate: no translation defined (%08lx)\n", virt);*/
882 static void remove_range_( phys_addr_t ea, ucell size, range_t **r )
886 /* If not an exact match then split the range */
887 for (t = r; *t; t = &(**t).next) {
888 if (ea > (**t).start && ea < (**t).start + (**t).size - 1) {
889 u = (range_t*)malloc(sizeof(range_t));
892 u->next = (**t).next;
894 OFMEM_TRACE("remove_range_ splitting range with addr=" FMT_plx
895 " size=" FMT_ucellx " -> addr=" FMT_plx " size=" FMT_ucellx ", "
896 "addr=" FMT_plx " size=" FMT_ucellx "\n",
897 (**t).start, (**t).size, (**t).start, (**t).size - size,
900 (**t).size = (**t).size - size;
905 for (t = r; *t; t = &(**t).next) {
906 if (ea >= (**t).start && ea + size <= (**t).start + (**t).size) {
907 OFMEM_TRACE("remove_range_ freeing range with addr=" FMT_plx
908 " size=" FMT_ucellx "\n", (**t).start, (**t).size);
917 static int remove_range( phys_addr_t ea, ucell size, range_t **r )
919 if( is_free( ea, size, *r ) ) {
920 OFMEM_TRACE("remove_range: range isn't occupied\n");
923 remove_range_( ea, size, r );
927 /* release memory allocated by ofmem_claim_phys */
928 void ofmem_release_phys( phys_addr_t phys, ucell size )
930 OFMEM_TRACE("ofmem_release_phys addr=" FMT_plx " size=" FMT_ucellx "\n",
933 ofmem_t *ofmem = ofmem_arch_get_private();
934 remove_range(phys, size, &ofmem->phys_range);
937 /* release memory allocated by ofmem_claim_virt */
938 void ofmem_release_virt( ucell virt, ucell size )
940 OFMEM_TRACE("ofmem_release_virt addr=" FMT_ucellx " size=" FMT_ucellx "\n",
943 ofmem_t *ofmem = ofmem_arch_get_private();
944 remove_range(virt, size, &ofmem->virt_range);
947 /* release memory allocated by ofmem_claim_io */
948 void ofmem_release_io( ucell virt, ucell size )
950 OFMEM_TRACE("ofmem_release_io addr=" FMT_ucellx " size=" FMT_ucellx "\n",
953 ofmem_t *ofmem = ofmem_arch_get_private();
954 remove_range(virt, size, &ofmem->io_range);
957 /* release memory allocated by ofmem_claim - 6.3.2.4 */
958 void ofmem_release( ucell virt, ucell size )
960 OFMEM_TRACE("%s addr=" FMT_ucellx " size=" FMT_ucellx "\n",
961 __func__, virt, size);
964 phys_addr_t phys = ofmem_translate(virt, &mode);
965 if (phys == (phys_addr_t)-1) {
966 OFMEM_TRACE("%s: no mapping\n", __func__);
969 ofmem_unmap(virt, size);
970 ofmem_release_virt(virt, size);
971 ofmem_release_phys(phys, size);
974 /************************************************************************/
976 /************************************************************************/
978 void ofmem_register( phandle_t ph_memory, phandle_t ph_mmu )
980 s_phandle_memory = ph_memory;
981 s_phandle_mmu = ph_mmu;
983 /* Initialise some default property sizes */
984 trans_prop_size = phys_range_prop_size = virt_range_prop_size = OFMEM_DEFAULT_PROP_SIZE;
985 trans_prop = malloc(trans_prop_size);
986 phys_range_prop = malloc(phys_range_prop_size);
987 virt_range_prop = malloc(virt_range_prop_size);
989 ofmem_update_translations();