#include "biosvar.h" // GET_BDA
#include "config.h" // BUILD_BIOS_ADDR
+#include "e820map.h" // struct e820entry
#include "list.h" // hlist_node
#include "malloc.h" // _malloc
-#include "memmap.h" // struct e820entry
+#include "memmap.h" // PAGE_SIZE
#include "output.h" // dprintf
#include "stacks.h" // wait_preempt
#include "std/optionrom.h" // OPTION_ROM_ALIGN
// Information on a reserved area.
struct allocinfo_s {
struct hlist_node node;
- void *data, *dataend, *allocend;
+ u32 range_start, range_end, alloc_size;
};
// Information on a tracked memory allocation.
****************************************************************/
// Find and reserve space from a given zone
-static void *
-allocSpace(struct zone_s *zone, u32 size, u32 align, struct allocinfo_s *fill)
+static u32
+alloc_new(struct zone_s *zone, u32 size, u32 align, struct allocinfo_s *fill)
{
struct allocinfo_s *info;
hlist_for_each_entry(info, &zone->head, node) {
- void *dataend = info->dataend;
- void *allocend = info->allocend;
- void *newallocend = (void*)ALIGN_DOWN((u32)allocend - size, align);
- if (newallocend >= dataend && newallocend <= allocend) {
+ u32 alloc_end = info->range_start + info->alloc_size;
+ u32 range_end = info->range_end;
+ u32 new_range_end = ALIGN_DOWN(range_end - size, align);
+ if (new_range_end >= alloc_end && new_range_end <= range_end) {
// Found space - now reserve it.
- if (!fill)
- fill = newallocend;
- fill->data = newallocend;
- fill->dataend = newallocend + size;
- fill->allocend = allocend;
+ fill->range_start = new_range_end;
+ fill->range_end = range_end;
+ fill->alloc_size = size;
- info->allocend = newallocend;
+ info->range_end = new_range_end;
hlist_add_before(&fill->node, &info->node);
- return newallocend;
+ return new_range_end;
}
}
- return NULL;
+ return 0;
}
-// Release space allocated with allocSpace()
-static void
-freeSpace(struct allocinfo_s *info)
+// Reserve space for a 'struct allocdetail_s' and fill
+static struct allocdetail_s *
+alloc_new_detail(struct allocdetail_s *temp)
{
- struct allocinfo_s *next = container_of_or_null(
- info->node.next, struct allocinfo_s, node);
- if (next && next->allocend == info->data)
- next->allocend = info->allocend;
- hlist_del(&info->node);
+ u32 detail_addr = alloc_new(&ZoneTmpHigh, sizeof(struct allocdetail_s)
+ , MALLOC_MIN_ALIGN, &temp->detailinfo);
+ if (!detail_addr) {
+ detail_addr = alloc_new(&ZoneTmpLow, sizeof(struct allocdetail_s)
+ , MALLOC_MIN_ALIGN, &temp->detailinfo);
+ if (!detail_addr) {
+ warn_noalloc();
+ return NULL;
+ }
+ }
+ struct allocdetail_s *detail = memremap(detail_addr, sizeof(*detail));
+
+ // Fill final 'detail' allocation from data in 'temp'
+ memcpy(detail, temp, sizeof(*detail));
+ hlist_replace(&temp->detailinfo.node, &detail->detailinfo.node);
+ hlist_replace(&temp->datainfo.node, &detail->datainfo.node);
+ return detail;
}
// Add new memory to a zone
static void
-addSpace(struct zone_s *zone, void *start, void *end)
+alloc_add(struct zone_s *zone, u32 start, u32 end)
{
// Find position to add space
struct allocinfo_s *info;
struct hlist_node **pprev;
hlist_for_each_entry_pprev(info, pprev, &zone->head, node) {
- if (info->data < start)
+ if (info->range_start < start)
break;
}
// Add space using temporary allocation info.
struct allocdetail_s tempdetail;
- tempdetail.datainfo.data = tempdetail.datainfo.dataend = start;
- tempdetail.datainfo.allocend = end;
+ tempdetail.handle = MALLOC_DEFAULT_HANDLE;
+ tempdetail.datainfo.range_start = start;
+ tempdetail.datainfo.range_end = end;
+ tempdetail.datainfo.alloc_size = 0;
hlist_add(&tempdetail.datainfo.node, pprev);
// Allocate final allocation info.
- struct allocdetail_s *detail = allocSpace(
- &ZoneTmpHigh, sizeof(*detail), MALLOC_MIN_ALIGN, NULL);
- if (!detail) {
- detail = allocSpace(&ZoneTmpLow, sizeof(*detail)
- , MALLOC_MIN_ALIGN, NULL);
- if (!detail) {
- hlist_del(&tempdetail.datainfo.node);
- warn_noalloc();
- return;
- }
- }
+ struct allocdetail_s *detail = alloc_new_detail(&tempdetail);
+ if (!detail)
+ hlist_del(&tempdetail.datainfo.node);
+}
- // Replace temp alloc space with final alloc space
- pprev = tempdetail.datainfo.node.pprev;
- hlist_del(&tempdetail.datainfo.node);
- memcpy(&detail->datainfo, &tempdetail.datainfo, sizeof(detail->datainfo));
- detail->handle = MALLOC_DEFAULT_HANDLE;
- hlist_add(&detail->datainfo.node, pprev);
+// Release space allocated with alloc_new()
+static void
+alloc_free(struct allocinfo_s *info)
+{
+ struct allocinfo_s *next = container_of_or_null(
+ info->node.next, struct allocinfo_s, node);
+ if (next && next->range_end == info->range_start)
+ next->range_end = info->range_end;
+ hlist_del(&info->node);
}
-// Search all zones for an allocation obtained from allocSpace()
+// Search all zones for an allocation obtained from alloc_new()
static struct allocinfo_s *
-findAlloc(void *data)
+alloc_find(u32 data)
{
int i;
for (i=0; i<ARRAY_SIZE(Zones); i++) {
struct allocinfo_s *info;
hlist_for_each_entry(info, &Zones[i]->head, node) {
- if (info->data == data)
+ if (info->range_start == data)
return info;
}
}
return NULL;
}
-// Return the last sentinal node of a zone
+// Find the lowest memory range added by alloc_add()
static struct allocinfo_s *
-findLast(struct zone_s *zone)
+alloc_find_lowest(struct zone_s *zone)
{
struct allocinfo_s *info, *last = NULL;
hlist_for_each_entry(info, &zone->head, node) {
}
// Support expanding the ZoneLow dynamically.
-static void *
+static u32
zonelow_expand(u32 size, u32 align, struct allocinfo_s *fill)
{
// Make sure to not move ebda while an optionrom is running.
if (unlikely(wait_preempt())) {
- void *data = allocSpace(&ZoneLow, size, align, fill);
+ u32 data = alloc_new(&ZoneLow, size, align, fill);
if (data)
return data;
}
- struct allocinfo_s *info = findLast(&ZoneLow);
+ struct allocinfo_s *info = alloc_find_lowest(&ZoneLow);
if (!info)
- return NULL;
- u32 oldpos = (u32)info->allocend;
+ return 0;
+ u32 oldpos = info->range_end;
u32 newpos = ALIGN_DOWN(oldpos - size, align);
- u32 bottom = (u32)info->dataend;
+ u32 bottom = info->range_start + info->alloc_size;
if (newpos >= bottom && newpos <= oldpos)
// Space already present.
- return allocSpace(&ZoneLow, size, align, fill);
+ return alloc_new(&ZoneLow, size, align, fill);
u16 ebda_seg = get_ebda_seg();
u32 ebda_pos = (u32)MAKE_FLATPTR(ebda_seg, 0);
u8 ebda_size = GET_EBDA(ebda_seg, size);
u32 newebda = ALIGN_DOWN(newbottom - ebda_size * 1024, 1024);
if (newebda < BUILD_EBDA_MINIMUM)
// Not enough space.
- return NULL;
+ return 0;
// Move ebda
int ret = relocate_ebda(newebda, ebda_pos, ebda_size);
if (ret)
- return NULL;
+ return 0;
// Update zone
- if (ebda_end == bottom) {
- info->data = (void*)newbottom;
- info->dataend = (void*)newbottom;
- } else
- addSpace(&ZoneLow, (void*)newbottom, (void*)ebda_end);
+ if (ebda_end == bottom)
+ info->range_start = newbottom;
+ else
+ alloc_add(&ZoneLow, newbottom, ebda_end);
- return allocSpace(&ZoneLow, size, align, fill);
+ return alloc_new(&ZoneLow, size, align, fill);
}
* tracked memory allocations
****************************************************************/
-// Allocate memory from the given zone and track it as a PMM allocation
-void * __malloc
-_malloc(struct zone_s *zone, u32 size, u32 align)
+// Allocate physical memory from the given zone and track it as a PMM allocation
+u32
+malloc_palloc(struct zone_s *zone, u32 size, u32 align)
{
ASSERT32FLAT();
if (!size)
- return NULL;
-
- // Find and reserve space for bookkeeping.
- struct allocdetail_s *detail = allocSpace(
- &ZoneTmpHigh, sizeof(*detail), MALLOC_MIN_ALIGN, NULL);
- if (!detail) {
- detail = allocSpace(&ZoneTmpLow, sizeof(*detail)
- , MALLOC_MIN_ALIGN, NULL);
- if (!detail)
- return NULL;
- }
- detail->handle = MALLOC_DEFAULT_HANDLE;
+ return 0;
// Find and reserve space for main allocation
- void *data = allocSpace(zone, size, align, &detail->datainfo);
+ struct allocdetail_s tempdetail;
+ tempdetail.handle = MALLOC_DEFAULT_HANDLE;
+ u32 data = alloc_new(zone, size, align, &tempdetail.datainfo);
if (!CONFIG_MALLOC_UPPERMEMORY && !data && zone == &ZoneLow)
- data = zonelow_expand(size, align, &detail->datainfo);
- if (!data) {
- freeSpace(&detail->detailinfo);
- return NULL;
+ data = zonelow_expand(size, align, &tempdetail.datainfo);
+ if (!data)
+ return 0;
+
+ // Find and reserve space for bookkeeping.
+ struct allocdetail_s *detail = alloc_new_detail(&tempdetail);
+ if (!detail) {
+ alloc_free(&tempdetail.datainfo);
+ return 0;
}
- dprintf(8, "_malloc zone=%p size=%d align=%x ret=%p (detail=%p)\n"
+ dprintf(8, "phys_alloc zone=%p size=%d align=%x ret=%x (detail=%p)\n"
, zone, size, align, data, detail);
return data;
}
-// Free a data block allocated with _malloc
+// Allocate virtual memory from the given zone
+void * __malloc
+_malloc(struct zone_s *zone, u32 size, u32 align)
+{
+ return memremap(malloc_palloc(zone, size, align), size);
+}
+
+// Free a data block allocated with phys_alloc
int
-_free(void *data)
+malloc_pfree(u32 data)
{
ASSERT32FLAT();
- struct allocinfo_s *info = findAlloc(data);
- if (!info || data == (void*)info || data == info->dataend)
+ struct allocinfo_s *info = alloc_find(data);
+ if (!info || data == virt_to_phys(info) || !info->alloc_size)
return -1;
struct allocdetail_s *detail = container_of(
info, struct allocdetail_s, datainfo);
- dprintf(8, "_free %p (detail=%p)\n", data, detail);
- freeSpace(info);
- freeSpace(&detail->detailinfo);
+ dprintf(8, "phys_free %x (detail=%p)\n", data, detail);
+ alloc_free(info);
+ alloc_free(&detail->detailinfo);
return 0;
}
+void
+free(void *data)
+{
+ if (!data)
+ return;
+ int ret = malloc_pfree(virt_to_phys(data));
+ if (ret)
+ warn_internalerror();
+}
+
// Find the amount of free space in a given zone.
u32
malloc_getspace(struct zone_s *zone)
u32 maxspace = 0;
struct allocinfo_s *info;
hlist_for_each_entry(info, &zone->head, node) {
- u32 space = info->allocend - info->dataend;
+ u32 space = info->range_end - info->range_start - info->alloc_size;
if (space > maxspace)
maxspace = space;
}
// Set a handle associated with an allocation.
void
-malloc_sethandle(void *data, u32 handle)
+malloc_sethandle(u32 data, u32 handle)
{
ASSERT32FLAT();
- struct allocinfo_s *info = findAlloc(data);
- if (!info || data == (void*)info || data == info->dataend)
+ struct allocinfo_s *info = alloc_find(data);
+ if (!info || data == virt_to_phys(info) || !info->alloc_size)
return;
struct allocdetail_s *detail = container_of(
info, struct allocdetail_s, datainfo);
detail->handle = handle;
}
-// Find the data block allocated with _malloc with a given handle.
-void *
+// Find the data block allocated with phys_alloc with a given handle.
+u32
malloc_findhandle(u32 handle)
{
int i;
for (i=0; i<ARRAY_SIZE(Zones); i++) {
struct allocinfo_s *info;
hlist_for_each_entry(info, &Zones[i]->head, node) {
- if (info->data != (void*)info)
+ if (info->range_start != virt_to_phys(info))
continue;
struct allocdetail_s *detail = container_of(
info, struct allocdetail_s, detailinfo);
if (detail->handle == handle)
- return detail->datainfo.data;
+ return detail->datainfo.range_start;
}
}
- return NULL;
+ return 0;
}
rom_get_max(void)
{
if (CONFIG_MALLOC_UPPERMEMORY)
- return ALIGN_DOWN((u32)RomBase->allocend - OPROM_HEADER_RESERVE
+ return ALIGN_DOWN(RomBase->range_end - OPROM_HEADER_RESERVE
, OPTION_ROM_ALIGN);
- extern u8 final_readonly_start[];
- return (u32)final_readonly_start;
+ return SYMBOL(final_readonly_start);
}
// Return the end of the last deployed option rom.
if (newend > rom_get_max())
return NULL;
if (CONFIG_MALLOC_UPPERMEMORY) {
- if (newend < (u32)zonelow_base)
- newend = (u32)zonelow_base;
- RomBase->data = RomBase->dataend = (void*)newend + OPROM_HEADER_RESERVE;
+ if (newend < SYMBOL(zonelow_base))
+ newend = SYMBOL(zonelow_base);
+ RomBase->range_start = newend + OPROM_HEADER_RESERVE;
}
return (void*)RomEnd;
}
dprintf(3, "malloc preinit\n");
// Don't declare any memory between 0xa0000 and 0x100000
- add_e820(BUILD_LOWRAM_END, BUILD_BIOS_ADDR-BUILD_LOWRAM_END, E820_HOLE);
+ e820_remove(BUILD_LOWRAM_END, BUILD_BIOS_ADDR-BUILD_LOWRAM_END);
// Mark known areas as reserved.
- add_e820(BUILD_BIOS_ADDR, BUILD_BIOS_SIZE, E820_RESERVED);
+ e820_add(BUILD_BIOS_ADDR, BUILD_BIOS_SIZE, E820_RESERVED);
// Populate temp high ram
u32 highram = 0;
e = newe;
}
}
- addSpace(&ZoneTmpHigh, (void*)s, (void*)e);
+ alloc_add(&ZoneTmpHigh, s, e);
}
// Populate regions
- addSpace(&ZoneTmpLow, (void*)BUILD_STACK_ADDR, (void*)BUILD_EBDA_MINIMUM);
+ alloc_add(&ZoneTmpLow, BUILD_STACK_ADDR, BUILD_EBDA_MINIMUM);
if (highram) {
- addSpace(&ZoneHigh, (void*)highram
- , (void*)highram + BUILD_MAX_HIGHTABLE);
- add_e820(highram, BUILD_MAX_HIGHTABLE, E820_RESERVED);
+ alloc_add(&ZoneHigh, highram, highram + BUILD_MAX_HIGHTABLE);
+ e820_add(highram, BUILD_MAX_HIGHTABLE, E820_RESERVED);
}
}
void
-csm_malloc_preinit(u32 low_pmm, u32 low_pmm_size, u32 hi_pmm, u32 hi_pmm_size)
+malloc_csm_preinit(u32 low_pmm, u32 low_pmm_size, u32 hi_pmm, u32 hi_pmm_size)
{
ASSERT32FLAT();
if (hi_pmm_size > BUILD_MAX_HIGHTABLE) {
- void *hi_pmm_end = (void *)hi_pmm + hi_pmm_size;
- addSpace(&ZoneTmpHigh, (void *)hi_pmm, hi_pmm_end - BUILD_MAX_HIGHTABLE);
- addSpace(&ZoneHigh, hi_pmm_end - BUILD_MAX_HIGHTABLE, hi_pmm_end);
+ u32 hi_pmm_end = hi_pmm + hi_pmm_size;
+ alloc_add(&ZoneTmpHigh, hi_pmm, hi_pmm_end - BUILD_MAX_HIGHTABLE);
+ alloc_add(&ZoneHigh, hi_pmm_end - BUILD_MAX_HIGHTABLE, hi_pmm_end);
} else {
- addSpace(&ZoneTmpHigh, (void *)hi_pmm, (void *)hi_pmm + hi_pmm_size);
+ alloc_add(&ZoneTmpHigh, hi_pmm, hi_pmm + hi_pmm_size);
}
- addSpace(&ZoneTmpLow, (void *)low_pmm, (void *)low_pmm + low_pmm_size);
+ alloc_add(&ZoneTmpLow, low_pmm, low_pmm + low_pmm_size);
}
u32 LegacyRamSize VARFSEG;
}
// Initialize low-memory region
- extern u8 varlow_start[], varlow_end[], final_varlow_start[];
- memmove(final_varlow_start, varlow_start, varlow_end - varlow_start);
+ memmove(VSYMBOL(final_varlow_start), VSYMBOL(varlow_start)
+ , SYMBOL(varlow_end) - SYMBOL(varlow_start));
if (CONFIG_MALLOC_UPPERMEMORY) {
- addSpace(&ZoneLow, zonelow_base + OPROM_HEADER_RESERVE
- , final_varlow_start);
- RomBase = findLast(&ZoneLow);
+ alloc_add(&ZoneLow, SYMBOL(zonelow_base) + OPROM_HEADER_RESERVE
+ , SYMBOL(final_varlow_start));
+ RomBase = alloc_find_lowest(&ZoneLow);
} else {
- addSpace(&ZoneLow, (void*)ALIGN_DOWN((u32)final_varlow_start, 1024)
- , final_varlow_start);
+ alloc_add(&ZoneLow, ALIGN_DOWN(SYMBOL(final_varlow_start), 1024)
+ , SYMBOL(final_varlow_start));
}
// Add space available in f-segment to ZoneFSeg
- extern u8 zonefseg_start[], zonefseg_end[];
- memset(zonefseg_start, 0, zonefseg_end - zonefseg_start);
- addSpace(&ZoneFSeg, zonefseg_start, zonefseg_end);
+ memset(VSYMBOL(zonefseg_start), 0
+ , SYMBOL(zonefseg_end) - SYMBOL(zonefseg_start));
+ alloc_add(&ZoneFSeg, SYMBOL(zonefseg_start), SYMBOL(zonefseg_end));
calcRamSize();
}
// Reserve more low-mem if needed.
u32 endlow = GET_BDA(mem_size_kb)*1024;
- add_e820(endlow, BUILD_LOWRAM_END-endlow, E820_RESERVED);
+ e820_add(endlow, BUILD_LOWRAM_END-endlow, E820_RESERVED);
// Clear unused f-seg ram.
- struct allocinfo_s *info = findLast(&ZoneFSeg);
- memset(info->dataend, 0, info->allocend - info->dataend);
+ struct allocinfo_s *info = alloc_find_lowest(&ZoneFSeg);
+ u32 size = info->range_end - info->range_start;
+ memset(memremap(info->range_start, size), 0, size);
dprintf(1, "Space available for UMB: %x-%x, %x-%x\n"
- , RomEnd, base, (u32)info->dataend, (u32)info->allocend);
+ , RomEnd, base, info->range_start, info->range_end);
// Give back unused high ram.
- info = findLast(&ZoneHigh);
+ info = alloc_find_lowest(&ZoneHigh);
if (info) {
- u32 giveback = ALIGN_DOWN(info->allocend - info->dataend, PAGE_SIZE);
- add_e820((u32)info->dataend, giveback, E820_RAM);
+ u32 giveback = ALIGN_DOWN(info->range_end-info->range_start, PAGE_SIZE);
+ e820_add(info->range_start, giveback, E820_RAM);
dprintf(1, "Returned %d bytes of ZoneHigh\n", giveback);
}
Code Review / kvmfornfv.git / blobdiff