/*
- * (C) Gražvydas "notaz" Ignotas, 2010
+ * (C) Gražvydas "notaz" Ignotas, 2010-2011
*
* This work is licensed under the terms of GNU GPL version 2 or later.
* See the COPYING file in the top-level directory.
*/
#include <stdio.h>
+#include <sys/mman.h>
#include "../psxhw.h"
#include "../cdrom.h"
#include "../mdec.h"
//#define memprintf printf
#define memprintf(...)
+static u8 unmapped_mem[0x1000];
+int pcsx_ram_is_ro;
+
static void read_mem8()
{
memprintf("ari64_read_mem8 %08x @%08x %u\n", address, psxRegs.pc, psxRegs.cycle);
extern void ari_write_ram_mirror8();
extern void ari_write_ram_mirror16();
extern void ari_write_ram_mirror32();
+extern void ari_write_ram_mirror_ro32();
extern void ari_read_bios8();
extern void ari_read_bios16();
extern void ari_read_bios32();
void (*writememb[0x10000])();
void (*writememh[0x10000])();
+static void write_biu()
+{
+ memprintf("write_biu %08x, %08x @%08x %u\n", address, word, psxRegs.pc, psxRegs.cycle);
+
+ if (address != 0xfffe0130)
+ return;
+
+ switch (word) {
+ case 0x800: case 0x804:
+ pcsx_ram_is_ro = 1;
+ break;
+ case 0: case 0x1e988:
+ pcsx_ram_is_ro = 0;
+ break;
+ default:
+ memprintf("write_biu: unexpected val: %08x\n", word);
+ break;
+ }
+}
+
/* IO handlers */
static u32 io_read_sio16()
{
static void io_write_dma_icr32(u32 value)
{
- u32 tmp = ~value & HW_DMA_ICR;
- HW_DMA_ICR = ((tmp ^ value) & 0xffffff) ^ tmp;
+ u32 tmp = value & 0x00ff803f;
+ tmp |= (SWAPu32(HW_DMA_ICR) & ~value) & 0x7f000000;
+ if ((tmp & HW_DMA_ICR_GLOBAL_ENABLE && tmp & 0x7f000000)
+ || tmp & HW_DMA_ICR_BUS_ERROR) {
+ if (!(SWAPu32(HW_DMA_ICR) & HW_DMA_ICR_IRQ_SENT))
+ psxHu32ref(0x1070) |= SWAP32(8);
+ tmp |= HW_DMA_ICR_IRQ_SENT;
+ }
+ HW_DMA_ICR = SWAPu32(tmp);
}
#define make_dma_func(n) \
void *spu_writef;
} nd_pcsx_io;
+static u32 *mem_readtab;
+static u32 *mem_writetab;
+static u32 mem_iortab[(1+2+4) * 0x1000 / 4];
+static u32 mem_iowtab[(1+2+4) * 0x1000 / 4];
+//static u32 mem_unmrtab[(1+2+4) * 0x1000 / 4];
+static u32 mem_unmwtab[(1+2+4) * 0x1000 / 4];
+
+static void map_item(u32 *out, const void *h, u32 flag)
+{
+ u32 hv = (u32)h;
+ if (hv & 1)
+ fprintf(stderr, "%p has LSB set\n", h);
+ *out = (hv >> 1) | (flag << 31);
+}
+
+// size must be power of 2, at least 4k
+#define map_l1_mem(tab, i, addr, size, base) \
+ map_item(&tab[((addr)>>12) + i], (u8 *)(base) - (u32)(addr) - ((i << 12) & ~(size - 1)), 0)
+
+#define IOMEM32(a) (((a) & 0xfff) / 4)
+#define IOMEM16(a) (0x1000/4 + (((a) & 0xfff) / 2))
+#define IOMEM8(a) (0x1000/4 + 0x1000/2 + ((a) & 0xfff))
+
void new_dyna_pcsx_mem_init(void)
{
int i;
+#if 1
+ // have to map these further to keep tcache close to .text
+ mem_readtab = mmap((void *)0x08000000, 0x200000 * 4, PROT_READ | PROT_WRITE,
+ MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+ if (mem_readtab == MAP_FAILED) {
+ fprintf(stderr, "failed to map mem tables\n");
+ exit(1);
+ }
+ mem_writetab = mem_readtab + 0x100000;
+
+ // 1st level lookup:
+ // 0: direct mem
+ // 1: use 2nd lookup
+ // 2nd level lookup:
+ // 0: direct mem variable
+ // 1: memhandler
+
+ // default/unmapped memhandlers
+ for (i = 0; i < 0x100000; i++) {
+ //map_item(&mem_readtab[i], mem_unmrtab, 1);
+ map_l1_mem(mem_readtab, i, 0, 0x1000, unmapped_mem);
+ map_item(&mem_writetab[i], mem_unmwtab, 1);
+ }
+
+ // RAM and it's mirrors
+ for (i = 0; i < (0x800000 >> 12); i++) {
+ map_l1_mem(mem_readtab, i, 0x80000000, 0x200000, psxM);
+ map_l1_mem(mem_writetab, i, 0x80000000, 0x200000, psxM);
+ map_l1_mem(mem_readtab, i, 0x00000000, 0x200000, psxM);
+ map_l1_mem(mem_writetab, i, 0x00000000, 0x200000, psxM);
+ map_l1_mem(mem_readtab, i, 0xa0000000, 0x200000, psxM);
+ map_l1_mem(mem_writetab, i, 0xa0000000, 0x200000, psxM);
+ }
+
+ // stupid BIOS RAM check
+ // TODO
+ // BIOS and it's mirrors
+ for (i = 0; i < (0x80000 >> 12); i++) {
+ map_l1_mem(mem_readtab, i, 0x1fc00000, 0x80000, psxR);
+ map_l1_mem(mem_readtab, i, 0xbfc00000, 0x80000, psxR);
+ }
+
+ // scratchpad
+ map_l1_mem(mem_readtab, 0, 0x1f800000, 0x1000, psxH);
+ map_l1_mem(mem_writetab, 0, 0x1f800000, 0x1000, psxH);
+
+ // I/O
+ map_item(&mem_readtab[0x1f801000 >> 12], mem_iortab, 1);
+ map_item(&mem_writetab[0x1f801000 >> 12], mem_iowtab, 1);
+
+ // L2
+ // unmapped tables
+ for (i = 0; i < 0x1000; i++)
+ map_item(&mem_unmwtab[i], write_mem_dummy, 1);
+
+ // fill IO tables
+ for (i = 0; i < 0x1000/4; i++) {
+ map_item(&mem_iortab[i], &psxH[0x1000], 0);
+ map_item(&mem_iowtab[i], &psxH[0x1000], 0);
+ }
+ for (; i < 0x1000/4 + 0x1000/2; i++) {
+ map_item(&mem_iortab[i], &psxH[0x1000], 0);
+ map_item(&mem_iowtab[i], &psxH[0x1000], 0);
+ }
+ for (; i < 0x1000/4 + 0x1000/2 + 0x1000; i++) {
+ map_item(&mem_iortab[i], &psxH[0x1000], 0);
+ map_item(&mem_iowtab[i], &psxH[0x1000], 0);
+ }
+
+ map_item(&mem_iortab[IOMEM32(0x1040)], io_read_sio32, 1);
+ map_item(&mem_iortab[IOMEM32(0x1100)], io_rcnt_read_count0, 1);
+ map_item(&mem_iortab[IOMEM32(0x1104)], io_rcnt_read_mode0, 1);
+ map_item(&mem_iortab[IOMEM32(0x1108)], io_rcnt_read_target0, 1);
+ map_item(&mem_iortab[IOMEM32(0x1110)], io_rcnt_read_count1, 1);
+ map_item(&mem_iortab[IOMEM32(0x1114)], io_rcnt_read_mode1, 1);
+ map_item(&mem_iortab[IOMEM32(0x1118)], io_rcnt_read_target1, 1);
+ map_item(&mem_iortab[IOMEM32(0x1120)], io_rcnt_read_count2, 1);
+ map_item(&mem_iortab[IOMEM32(0x1124)], io_rcnt_read_mode2, 1);
+ map_item(&mem_iortab[IOMEM32(0x1128)], io_rcnt_read_target2, 1);
+// map_item(&mem_iortab[IOMEM32(0x1810)], GPU_readData, 1);
+// map_item(&mem_iortab[IOMEM32(0x1814)], GPU_readStatus, 1);
+ map_item(&mem_iortab[IOMEM32(0x1820)], mdecRead0, 1);
+ map_item(&mem_iortab[IOMEM32(0x1824)], mdecRead1, 1);
+
+ map_item(&mem_iortab[IOMEM16(0x1040)], io_read_sio16, 1);
+ map_item(&mem_iortab[IOMEM16(0x1044)], sioReadStat16, 1);
+ map_item(&mem_iortab[IOMEM16(0x1048)], sioReadMode16, 1);
+ map_item(&mem_iortab[IOMEM16(0x104a)], sioReadCtrl16, 1);
+ map_item(&mem_iortab[IOMEM16(0x104e)], sioReadBaud16, 1);
+ map_item(&mem_iortab[IOMEM16(0x1100)], io_rcnt_read_count0, 1);
+ map_item(&mem_iortab[IOMEM16(0x1104)], io_rcnt_read_mode0, 1);
+ map_item(&mem_iortab[IOMEM16(0x1108)], io_rcnt_read_target0, 1);
+ map_item(&mem_iortab[IOMEM16(0x1110)], io_rcnt_read_count1, 1);
+ map_item(&mem_iortab[IOMEM16(0x1114)], io_rcnt_read_mode1, 1);
+ map_item(&mem_iortab[IOMEM16(0x1118)], io_rcnt_read_target1, 1);
+ map_item(&mem_iortab[IOMEM16(0x1120)], io_rcnt_read_count2, 1);
+ map_item(&mem_iortab[IOMEM16(0x1124)], io_rcnt_read_mode2, 1);
+ map_item(&mem_iortab[IOMEM16(0x1128)], io_rcnt_read_target2, 1);
+
+ map_item(&mem_iortab[IOMEM8(0x1040)], sioRead8, 1);
+ map_item(&mem_iortab[IOMEM8(0x1800)], cdrRead0, 1);
+ map_item(&mem_iortab[IOMEM8(0x1801)], cdrRead1, 1);
+ map_item(&mem_iortab[IOMEM8(0x1802)], cdrRead2, 1);
+ map_item(&mem_iortab[IOMEM8(0x1803)], cdrRead3, 1);
+
+ mem_rtab = mem_readtab;
+ mem_wtab = mem_writetab;
+#endif
+///
// default/unmapped handlers
for (i = 0; i < 0x10000; i++) {
readmemb[i] = read_mem8;
writemem[i] = writemem [0x8000|i] = writemem [0xa000|i] = ari_write_ram_mirror32;
}
+ // stupid BIOS RAM check
+ writemem[0] = ari_write_ram_mirror_ro32;
+ pcsx_ram_is_ro = 0;
+
// RAM direct
for (i = 0x8000; i < 0x8020; i++) {
readmemb[i] = ari_read_ram8;
readmemh[i] = ari_read_ram16;
readmem[i] = ari_read_ram32;
- writememb[i] = ari_write_ram8;
- writememh[i] = ari_write_ram16;
- writemem[i] = ari_write_ram32;
}
// BIOS and it's mirrors
writememh[0x1f80] = ari_write_io16;
writemem[0x1f80] = ari_write_io32;
- writemem[0xfffe] = write_mem32;
+ writemem[0xfffe] = write_biu;
#endif
// fill IO tables
void new_dyna_pcsx_mem_reset(void)
{
+ int i;
+
// plugins might change so update the pointers
+ map_item(&mem_iortab[IOMEM32(0x1810)], GPU_readData, 1);
+ map_item(&mem_iortab[IOMEM32(0x1814)], GPU_readStatus, 1);
+
+ for (i = 0x1c00; i < 0x1e00; i += 2)
+ map_item(&mem_iortab[IOMEM16(i)], SPU_readRegister, 1);
+
nd_pcsx_io.spu_readf = SPU_readRegister;
nd_pcsx_io.spu_writef = SPU_writeRegister;
notaz.gp2x.de / pcsx_rearmed.git / blobdiff