26491a388c
Provide a constructor that takes the base address in addition to the PC-specific one. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-id: 1372254743-15808-12-git-send-email-armbru@redhat.com Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
72 lines
1.3 KiB
C
72 lines
1.3 KiB
C
/*
|
|
* libqos malloc support for PC
|
|
*
|
|
* Copyright IBM, Corp. 2012-2013
|
|
*
|
|
* Authors:
|
|
* Anthony Liguori <aliguori@us.ibm.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2 or later.
|
|
* See the COPYING file in the top-level directory.
|
|
*/
|
|
|
|
#include "libqos/malloc-pc.h"
|
|
#include "libqos/fw_cfg.h"
|
|
|
|
#define NO_QEMU_PROTOS
|
|
#include "hw/nvram/fw_cfg.h"
|
|
|
|
#include "qemu-common.h"
|
|
#include <glib.h>
|
|
|
|
#define PAGE_SIZE (4096)
|
|
|
|
typedef struct PCAlloc
|
|
{
|
|
QGuestAllocator alloc;
|
|
|
|
uint64_t start;
|
|
uint64_t end;
|
|
} PCAlloc;
|
|
|
|
static uint64_t pc_alloc(QGuestAllocator *allocator, size_t size)
|
|
{
|
|
PCAlloc *s = container_of(allocator, PCAlloc, alloc);
|
|
uint64_t addr;
|
|
|
|
|
|
size += (PAGE_SIZE - 1);
|
|
size &= PAGE_SIZE;
|
|
|
|
g_assert_cmpint((s->start + size), <=, s->end);
|
|
|
|
addr = s->start;
|
|
s->start += size;
|
|
|
|
return addr;
|
|
}
|
|
|
|
static void pc_free(QGuestAllocator *allocator, uint64_t addr)
|
|
{
|
|
}
|
|
|
|
QGuestAllocator *pc_alloc_init(void)
|
|
{
|
|
PCAlloc *s = g_malloc0(sizeof(*s));
|
|
uint64_t ram_size;
|
|
QFWCFG *fw_cfg = pc_fw_cfg_init();
|
|
|
|
s->alloc.alloc = pc_alloc;
|
|
s->alloc.free = pc_free;
|
|
|
|
ram_size = qfw_cfg_get_u64(fw_cfg, FW_CFG_RAM_SIZE);
|
|
|
|
/* Start at 1MB */
|
|
s->start = 1 << 20;
|
|
|
|
/* Respect PCI hole */
|
|
s->end = MIN(ram_size, 0xE0000000);
|
|
|
|
return &s->alloc;
|
|
}
|