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Port plat_m(un)map from the VFIO branch

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This commit is contained in:
RichardG867
2021-10-16 20:12:49 -03:00
parent e25482db11
commit 5bf8aa2d58
6 changed files with 66 additions and 69 deletions
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57
src/mem/mem.c
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@@ -34,6 +34,7 @@
#include <86box/config.h>
#include <86box/io.h>
#include <86box/mem.h>
#include <86box/plat.h>
#include <86box/rom.h>
#ifdef USE_DYNAREC
# include "codegen_public.h"
@@ -128,6 +129,11 @@ static uint8_t *_mem_exec[MEM_MAPPINGS_NO];
static uint8_t ff_pccache[4] = { 0xff, 0xff, 0xff, 0xff };
static mem_state_t _mem_state[MEM_MAPPINGS_NO];
static uint32_t remap_start_addr;
#if (!(defined __amd64__ || defined _M_X64 || defined __aarch64__ || defined _M_ARM64))
static size_t ram_size = 0, ram2_size = 0;
#else
static size_t ram_size = 0;
#endif
#ifdef ENABLE_MEM_LOG
@@ -1590,7 +1596,7 @@ do_mmutranslate(uint32_t addr, uint32_t *a64, int num, int write)
a64[i] = (uint64_t) addr;
for (i = 0; i < num; i++) {
if (cr0 >> 31) {
if (cr0 >> 31) {
if (write && ((i == 0) || !(addr & 0xfff)))
cond = (!page_lookup[addr >> 12] || !page_lookup[addr >> 12]->write_b);
@@ -1660,7 +1666,7 @@ mem_readw_phys(uint32_t addr)
p = (uint16_t *) &(map->exec[addr - map->base]);
ret = *p;
} else if (((addr & MEM_GRANULARITY_MASK) <= MEM_GRANULARITY_HBOUND) && (map && map->read_w))
ret = map->read_w(addr, map->p);
ret = map->read_w(addr, map->p);
else {
ret = mem_readb_phys(addr + 1) << 8;
ret |= mem_readb_phys(addr);
@@ -1682,7 +1688,7 @@ mem_readl_phys(uint32_t addr)
p = (uint32_t *) &(map->exec[addr - map->base]);
ret = *p;
} else if (((addr & MEM_GRANULARITY_MASK) <= MEM_GRANULARITY_QBOUND) && (map && map->read_l))
ret = map->read_l(addr, map->p);
ret = map->read_l(addr, map->p);
else {
ret = mem_readw_phys(addr + 2) << 16;
ret |= mem_readw_phys(addr);
@@ -1740,7 +1746,7 @@ mem_writew_phys(uint32_t addr, uint16_t val)
p = (uint16_t *) &(map->exec[addr - map->base]);
*p = val;
} else if (((addr & MEM_GRANULARITY_MASK) <= MEM_GRANULARITY_HBOUND) && (map && map->write_w))
map->write_w(addr, val, map->p);
map->write_w(addr, val, map->p);
else {
mem_writeb_phys(addr, val & 0xff);
mem_writeb_phys(addr + 1, (val >> 8) & 0xff);
@@ -1760,7 +1766,7 @@ mem_writel_phys(uint32_t addr, uint32_t val)
p = (uint32_t *) &(map->exec[addr - map->base]);
*p = val;
} else if (((addr & MEM_GRANULARITY_MASK) <= MEM_GRANULARITY_QBOUND) && (map && map->write_l))
map->write_l(addr, val, map->p);
map->write_l(addr, val, map->p);
else {
mem_writew_phys(addr, val & 0xffff);
mem_writew_phys(addr + 2, (val >> 16) & 0xffff);
@@ -2606,30 +2612,34 @@ mem_reset(void)
}
if (ram != NULL) {
free(ram);
plat_munmap(ram, ram_size);
ram = NULL;
ram_size = 0;
}
#if (!(defined __amd64__ || defined _M_X64 || defined __aarch64__ || defined _M_ARM64))
if (ram2 != NULL) {
free(ram2);
plat_munmap(ram2, ram2_size);
ram2 = NULL;
ram2_size = 0;
}
#endif
if (mem_size > 2097152)
fatal("Attempting to use more than 2 GB of emulated RAM\n");
mem_size = 2097152;
#endif
m = 1024UL * mem_size;
#if (!(defined __amd64__ || defined _M_X64 || defined __aarch64__ || defined _M_ARM64))
if (mem_size > 1048576) {
ram = (uint8_t *)malloc(1 << 30); /* allocate and clear the RAM block of the first 1 GB */
ram_size = 1 << 30;
ram = (uint8_t *) plat_mmap(ram_size, 0); /* allocate and clear the RAM block of the first 1 GB */
if (ram == NULL) {
fatal("Failed to allocate primary RAM block. Make sure you have enough RAM available.\n");
return;
}
memset(ram, 0x00, (1 << 30));
ram2 = (uint8_t *)malloc(m - (1 << 30)); /* allocate and clear the RAM block above 1 GB */
memset(ram, 0x00, ram_size);
ram2_size = m - (1 << 30);
ram2 = (uint8_t *) plat_mmap(ram2_size, 0); /* allocate and clear the RAM block above 1 GB */
if (ram2 == NULL) {
if (config_changed == 2)
fatal(EMU_NAME " must be restarted for the memory amount change to be applied.\n");
@@ -2637,25 +2647,20 @@ mem_reset(void)
fatal("Failed to allocate secondary RAM block. Make sure you have enough RAM available.\n");
return;
}
memset(ram2, 0x00, m - (1 << 30));
} else {
ram = (uint8_t *)malloc(m); /* allocate and clear the RAM block */
memset(ram2, 0x00, ram2_size);
} else
#endif
{
ram_size = m;
ram = (uint8_t *) plat_mmap(ram_size, 0); /* allocate and clear the RAM block */
if (ram == NULL) {
fatal("Failed to allocate RAM block. Make sure you have enough RAM available.\n");
return;
}
memset(ram, 0x00, m);
memset(ram, 0x00, ram_size);
if (mem_size > 1048576)
ram2 = &(ram[1 << 30]);
}
#else
ram = (uint8_t *)malloc(m); /* allocate and clear the RAM block */
if (ram == NULL) {
fatal("Failed to allocate RAM block. Make sure you have enough RAM available.\n");
return;
}
memset(ram, 0x00, m);
if (mem_size > 1048576)
ram2 = &(ram[1 << 30]);
#endif
/*
* Allocate the page table based on how much RAM we have.