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partial big endian fixes - change VESA VBE ports for non i386 targets to avoid unaligned accesses

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@866 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2004-05-26 22:58:01 +00:00
parent 642012017c
commit 09a79b4974
1 changed files with 63 additions and 27 deletions
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90
hw/vga.c
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@ -489,34 +489,40 @@ static void vga_ioport_write(void *opaque, uint32_t addr, uint32_t val)
}
#ifdef CONFIG_BOCHS_VBE
static uint32_t vbe_ioport_read(void *opaque, uint32_t addr)
static uint32_t vbe_ioport_read_index(void *opaque, uint32_t addr)
{
VGAState *s = opaque;
uint32_t val;
val = s->vbe_index;
return val;
}
static uint32_t vbe_ioport_read_data(void *opaque, uint32_t addr)
{
VGAState *s = opaque;
uint32_t val;
addr &= 1;
if (addr == 0) {
val = s->vbe_index;
} else {
if (s->vbe_index <= VBE_DISPI_INDEX_NB)
val = s->vbe_regs[s->vbe_index];
else
val = 0;
if (s->vbe_index <= VBE_DISPI_INDEX_NB)
val = s->vbe_regs[s->vbe_index];
else
val = 0;
#ifdef DEBUG_BOCHS_VBE
printf("VBE: read index=0x%x val=0x%x\n", s->vbe_index, val);
printf("VBE: read index=0x%x val=0x%x\n", s->vbe_index, val);
#endif
}
return val;
}
static void vbe_ioport_write(void *opaque, uint32_t addr, uint32_t val)
static void vbe_ioport_write_index(void *opaque, uint32_t addr, uint32_t val)
{
VGAState *s = opaque;
s->vbe_index = val;
}
static void vbe_ioport_write_data(void *opaque, uint32_t addr, uint32_t val)
{
VGAState *s = opaque;
addr &= 1;
if (addr == 0) {
s->vbe_index = val;
} else if (s->vbe_index <= VBE_DISPI_INDEX_NB) {
if (s->vbe_index <= VBE_DISPI_INDEX_NB) {
#ifdef DEBUG_BOCHS_VBE
printf("VBE: write index=0x%x val=0x%x\n", s->vbe_index, val);
#endif
@ -709,18 +715,30 @@ static uint32_t vga_mem_readb(target_phys_addr_t addr)
static uint32_t vga_mem_readw(target_phys_addr_t addr)
{
uint32_t v;
#ifdef TARGET_WORDS_BIGENDIAN
v = vga_mem_readb(addr) << 8;
v |= vga_mem_readb(addr + 1);
#else
v = vga_mem_readb(addr);
v |= vga_mem_readb(addr + 1) << 8;
#endif
return v;
}
static uint32_t vga_mem_readl(target_phys_addr_t addr)
{
uint32_t v;
#ifdef TARGET_WORDS_BIGENDIAN
v = vga_mem_readb(addr) << 24;
v |= vga_mem_readb(addr + 1) << 16;
v |= vga_mem_readb(addr + 2) << 8;
v |= vga_mem_readb(addr + 3);
#else
v = vga_mem_readb(addr);
v |= vga_mem_readb(addr + 1) << 8;
v |= vga_mem_readb(addr + 2) << 16;
v |= vga_mem_readb(addr + 3) << 24;
#endif
return v;
}
@ -855,16 +873,28 @@ static void vga_mem_writeb(target_phys_addr_t addr, uint32_t val)
static void vga_mem_writew(target_phys_addr_t addr, uint32_t val)
{
#ifdef TARGET_WORDS_BIGENDIAN
vga_mem_writeb(addr, (val >> 8) & 0xff);
vga_mem_writeb(addr + 1, val & 0xff);
#else
vga_mem_writeb(addr, val & 0xff);
vga_mem_writeb(addr + 1, (val >> 8) & 0xff);
#endif
}
static void vga_mem_writel(target_phys_addr_t addr, uint32_t val)
{
#ifdef TARGET_WORDS_BIGENDIAN
vga_mem_writeb(addr, (val >> 24) & 0xff);
vga_mem_writeb(addr + 1, (val >> 16) & 0xff);
vga_mem_writeb(addr + 2, (val >> 8) & 0xff);
vga_mem_writeb(addr + 3, val & 0xff);
#else
vga_mem_writeb(addr, val & 0xff);
vga_mem_writeb(addr + 1, (val >> 8) & 0xff);
vga_mem_writeb(addr + 2, (val >> 16) & 0xff);
vga_mem_writeb(addr + 3, (val >> 24) & 0xff);
#endif
}
typedef void vga_draw_glyph8_func(uint8_t *d, int linesize,
@ -1366,7 +1396,7 @@ static void vga_draw_graphic(VGAState *s, int full_update)
((s->cr[0x07] & 0x40) << 3);
height = (height + 1);
disp_width = width;
shift_control = (s->gr[0x05] >> 5) & 3;
double_scan = (s->cr[0x09] & 0x80);
if (shift_control > 1) {
@ -1774,19 +1804,27 @@ int vga_initialize(DisplayState *ds, uint8_t *vga_ram_base,
#ifdef CONFIG_BOCHS_VBE
s->vbe_regs[VBE_DISPI_INDEX_ID] = VBE_DISPI_ID0;
s->vbe_bank_mask = ((s->vram_size >> 16) - 1);
register_ioport_read(0x1ce, 1, 2, vbe_ioport_read, s);
register_ioport_read(0x1cf, 1, 2, vbe_ioport_read, s);
#if defined (TARGET_I386)
register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s);
register_ioport_read(0x1cf, 1, 2, vbe_ioport_read_data, s);
register_ioport_write(0x1ce, 1, 2, vbe_ioport_write, s);
register_ioport_write(0x1cf, 1, 2, vbe_ioport_write, s);
register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s);
register_ioport_write(0x1cf, 1, 2, vbe_ioport_write_data, s);
/* old Bochs IO ports */
register_ioport_read(0xff80, 1, 2, vbe_ioport_read, s);
register_ioport_read(0xff81, 1, 2, vbe_ioport_read, s);
register_ioport_read(0xff80, 1, 2, vbe_ioport_read_index, s);
register_ioport_read(0xff81, 1, 2, vbe_ioport_read_data, s);
register_ioport_write(0xff80, 1, 2, vbe_ioport_write, s);
register_ioport_write(0xff81, 1, 2, vbe_ioport_write, s);
register_ioport_write(0xff80, 1, 2, vbe_ioport_write_index, s);
register_ioport_write(0xff81, 1, 2, vbe_ioport_write_data, s);
#else
register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s);
register_ioport_read(0x1d0, 1, 2, vbe_ioport_read_data, s);
register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s);
register_ioport_write(0x1d0, 1, 2, vbe_ioport_write_data, s);
#endif
#endif /* CONFIG_BOCHS_VBE */
vga_io_memory = cpu_register_io_memory(0, vga_mem_read, vga_mem_write);
cpu_register_physical_memory(isa_mem_base + 0x000a0000, 0x20000,
@ -1814,11 +1852,9 @@ int vga_initialize(DisplayState *ds, uint8_t *vga_ram_base,
PCI_ADDRESS_SPACE_MEM_PREFETCH, vga_map);
} else {
#ifdef CONFIG_BOCHS_VBE
#if defined (TARGET_I386)
/* XXX: use optimized standard vga accesses */
cpu_register_physical_memory(VBE_DISPI_LFB_PHYSICAL_ADDRESS,
vga_ram_size, vga_ram_offset);
#endif
#endif
}
return 0;