49f77fff14
Save in a few special cases, _X_EXPORT should not be used in C source files. Instead, it should be used in headers, and the proper C source include that header. Some special cases are symbols that need to be shared between modules, but not expected to be used by external drivers, and symbols that are accessible via LoaderSymbol/dlopen. This patch also adds conditionally some new sdk header files, depending on extensions enabled. These files were added to match pattern for other extensions/modules, that is, have the headers "deciding" symbol visibility in the sdk. These headers are: o Xext/panoramiXsrv.h, Xext/panoramiX.h o fbpict.h (unconditionally) o vidmodeproc.h o mioverlay.h (unconditionally, used only by xaa) o xfixes.h (unconditionally, symbols required by dri2) LoaderSymbol and similar functions now don't have different prototypes, in loaderProcs.h and xf86Module.h, so that both headers can be included, without the need of defining IN_LOADER. xf86NewInputDevice() device prototype readded to xf86Xinput.h, but not exported (and with a comment about it).
494 lines
12 KiB
C
494 lines
12 KiB
C
/*
|
|
* XFree86 int10 module
|
|
* execute BIOS int 10h calls in x86 real mode environment
|
|
* Copyright 1999 Egbert Eich
|
|
*/
|
|
#ifdef HAVE_XORG_CONFIG_H
|
|
#include <xorg-config.h>
|
|
#endif
|
|
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#include "xf86.h"
|
|
#include "xf86_OSproc.h"
|
|
#include "compiler.h"
|
|
#define _INT10_PRIVATE
|
|
#include "xf86int10.h"
|
|
#include "int10Defines.h"
|
|
#include "Pci.h"
|
|
|
|
#define ALLOC_ENTRIES(x) ((V_RAM / x) - 1)
|
|
|
|
static CARD8 read_b(xf86Int10InfoPtr pInt,int addr);
|
|
static CARD16 read_w(xf86Int10InfoPtr pInt,int addr);
|
|
static CARD32 read_l(xf86Int10InfoPtr pInt,int addr);
|
|
static void write_b(xf86Int10InfoPtr pInt,int addr, CARD8 val);
|
|
static void write_w(xf86Int10InfoPtr pInt,int addr, CARD16 val);
|
|
static void write_l(xf86Int10InfoPtr pInt,int addr, CARD32 val);
|
|
|
|
/*
|
|
* the emulator cannot pass a pointer to the current xf86Int10InfoRec
|
|
* to the memory access functions therefore store it here.
|
|
*/
|
|
|
|
typedef struct {
|
|
int shift;
|
|
int entries;
|
|
void* base;
|
|
void* vRam;
|
|
int highMemory;
|
|
void* sysMem;
|
|
char* alloc;
|
|
} genericInt10Priv;
|
|
|
|
#define INTPriv(x) ((genericInt10Priv*)x->private)
|
|
|
|
int10MemRec genericMem = {
|
|
read_b,
|
|
read_w,
|
|
read_l,
|
|
write_b,
|
|
write_w,
|
|
write_l
|
|
};
|
|
|
|
static void MapVRam(xf86Int10InfoPtr pInt);
|
|
static void UnmapVRam(xf86Int10InfoPtr pInt);
|
|
#ifdef _PC
|
|
#define GET_HIGH_BASE(x) (((V_BIOS + (x) + getpagesize() - 1)/getpagesize()) \
|
|
* getpagesize())
|
|
#endif
|
|
|
|
static void *sysMem = NULL;
|
|
|
|
/**
|
|
* Read legacy VGA video BIOS associated with specified domain.
|
|
*
|
|
* Attempts to read up to 128KiB of legacy VGA video BIOS.
|
|
*
|
|
* \return
|
|
* The number of bytes read on success or -1 on failure.
|
|
*
|
|
* \bug
|
|
* PCI ROMs can contain multiple BIOS images (e.g., OpenFirmware, x86 VGA,
|
|
* etc.). How do we know that \c pci_device_read_rom will return the
|
|
* legacy VGA BIOS image?
|
|
*/
|
|
static int
|
|
read_legacy_video_BIOS(struct pci_device *dev, unsigned char *Buf)
|
|
{
|
|
const ADDRESS Base = 0xC0000;
|
|
const int Len = 0x10000 * 2;
|
|
const int pagemask = getpagesize() - 1;
|
|
const ADDRESS offset = Base & ~pagemask;
|
|
const unsigned long size = ((Base + Len + pagemask) & ~pagemask) - offset;
|
|
unsigned char *ptr, *src;
|
|
int len;
|
|
|
|
|
|
/* Try to use the civilized PCI interface first.
|
|
*/
|
|
if (pci_device_read_rom(dev, Buf) == 0) {
|
|
return dev->rom_size;
|
|
}
|
|
|
|
ptr = xf86MapDomainMemory(-1, VIDMEM_READONLY, dev, offset, size);
|
|
|
|
if (!ptr)
|
|
return -1;
|
|
|
|
/* Using memcpy() here can hang the system */
|
|
src = ptr + (Base - offset);
|
|
for (len = 0; len < (Len / 2); len++) {
|
|
Buf[len] = src[len];
|
|
}
|
|
|
|
if ((Buf[0] == 0x55) && (Buf[1] == 0xAA) && (Buf[2] > 0x80)) {
|
|
for ( /* empty */ ; len < Len; len++) {
|
|
Buf[len] = src[len];
|
|
}
|
|
}
|
|
|
|
xf86UnMapVidMem(-1, ptr, size);
|
|
|
|
return Len;
|
|
}
|
|
|
|
|
|
xf86Int10InfoPtr
|
|
xf86ExtendedInitInt10(int entityIndex, int Flags)
|
|
{
|
|
xf86Int10InfoPtr pInt;
|
|
void* base = 0;
|
|
void* vbiosMem = 0;
|
|
void* options = NULL;
|
|
int screen;
|
|
legacyVGARec vga;
|
|
|
|
#ifdef _PC
|
|
int size;
|
|
CARD32 cs;
|
|
#endif
|
|
|
|
screen = (xf86FindScreenForEntity(entityIndex))->scrnIndex;
|
|
|
|
options = xf86HandleInt10Options(xf86Screens[screen],entityIndex);
|
|
|
|
if (int10skip(options)) {
|
|
xfree(options);
|
|
return NULL;
|
|
}
|
|
|
|
pInt = (xf86Int10InfoPtr)xnfcalloc(1, sizeof(xf86Int10InfoRec));
|
|
pInt->entityIndex = entityIndex;
|
|
if (!xf86Int10ExecSetup(pInt))
|
|
goto error0;
|
|
pInt->mem = &genericMem;
|
|
pInt->private = (pointer)xnfcalloc(1, sizeof(genericInt10Priv));
|
|
INTPriv(pInt)->alloc = (pointer)xnfcalloc(1, ALLOC_ENTRIES(getpagesize()));
|
|
pInt->scrnIndex = screen;
|
|
base = INTPriv(pInt)->base = xnfalloc(SYS_BIOS);
|
|
|
|
/* FIXME: Shouldn't this be a failure case? Leaving dev as NULL seems like
|
|
* FIXME: an error
|
|
*/
|
|
pInt->dev = xf86GetPciInfoForEntity(entityIndex);
|
|
|
|
/*
|
|
* we need to map video RAM MMIO as some chipsets map mmio
|
|
* registers into this range.
|
|
*/
|
|
MapVRam(pInt);
|
|
#ifdef _PC
|
|
if (!sysMem)
|
|
sysMem = xf86MapVidMem(screen, VIDMEM_MMIO, V_BIOS,
|
|
BIOS_SIZE + SYS_BIOS - V_BIOS);
|
|
INTPriv(pInt)->sysMem = sysMem;
|
|
|
|
if (xf86ReadBIOS(0, 0, base, LOW_PAGE_SIZE) < 0) {
|
|
xf86DrvMsg(screen, X_ERROR, "Cannot read int vect\n");
|
|
goto error1;
|
|
}
|
|
|
|
/*
|
|
* Retrieve everything between V_BIOS and SYS_BIOS as some system BIOSes
|
|
* have executable code there. Note that xf86ReadBIOS() can only read in
|
|
* 64kB at a time.
|
|
*/
|
|
memset((char *)base + V_BIOS, 0, SYS_BIOS - V_BIOS);
|
|
#if 0
|
|
for (cs = V_BIOS; cs < SYS_BIOS; cs += V_BIOS_SIZE)
|
|
if (xf86ReadBIOS(cs, 0, (unsigned char *)base + cs, V_BIOS_SIZE) <
|
|
V_BIOS_SIZE)
|
|
xf86DrvMsg(screen, X_WARNING,
|
|
"Unable to retrieve all of segment 0x%06X.\n", cs);
|
|
#endif
|
|
INTPriv(pInt)->highMemory = V_BIOS;
|
|
|
|
if (xf86IsEntityPrimary(entityIndex) && !(initPrimary(options))) {
|
|
if (!xf86int10GetBiosSegment(pInt, (unsigned char *)sysMem - V_BIOS))
|
|
goto error1;
|
|
|
|
set_return_trap(pInt);
|
|
|
|
pInt->Flags = Flags & (SET_BIOS_SCRATCH | RESTORE_BIOS_SCRATCH);
|
|
if (! (pInt->Flags & SET_BIOS_SCRATCH))
|
|
pInt->Flags &= ~RESTORE_BIOS_SCRATCH;
|
|
xf86Int10SaveRestoreBIOSVars(pInt, TRUE);
|
|
|
|
} else {
|
|
const BusType location_type = xf86int10GetBiosLocationType(pInt);
|
|
int bios_location = V_BIOS;
|
|
|
|
reset_int_vect(pInt);
|
|
set_return_trap(pInt);
|
|
|
|
switch (location_type) {
|
|
case BUS_PCI: {
|
|
int err;
|
|
struct pci_device *rom_device =
|
|
xf86GetPciInfoForEntity(pInt->entityIndex);
|
|
|
|
vbiosMem = (unsigned char *)base + bios_location;
|
|
err = pci_device_read_rom(rom_device, vbiosMem);
|
|
if (err) {
|
|
xf86DrvMsg(screen,X_ERROR,"Cannot read V_BIOS (3) %s\n",
|
|
strerror(err));
|
|
goto error1;
|
|
}
|
|
INTPriv(pInt)->highMemory = GET_HIGH_BASE(rom_device->rom_size);
|
|
break;
|
|
}
|
|
default:
|
|
goto error1;
|
|
}
|
|
pInt->BIOSseg = V_BIOS >> 4;
|
|
pInt->num = 0xe6;
|
|
LockLegacyVGA(pInt, &vga);
|
|
xf86ExecX86int10(pInt);
|
|
UnlockLegacyVGA(pInt, &vga);
|
|
}
|
|
#else
|
|
if (!sysMem) {
|
|
sysMem = xnfalloc(BIOS_SIZE);
|
|
setup_system_bios(sysMem);
|
|
}
|
|
INTPriv(pInt)->sysMem = sysMem;
|
|
setup_int_vect(pInt);
|
|
set_return_trap(pInt);
|
|
|
|
/* Retrieve the entire legacy video BIOS segment. This can be upto
|
|
* 128KiB.
|
|
*/
|
|
vbiosMem = (char *)base + V_BIOS;
|
|
memset(vbiosMem, 0, 2 * V_BIOS_SIZE);
|
|
if (read_legacy_video_BIOS(pInt->dev, vbiosMem) < V_BIOS_SIZE) {
|
|
xf86DrvMsg(screen, X_WARNING,
|
|
"Unable to retrieve all of segment 0x0C0000.\n");
|
|
}
|
|
|
|
/*
|
|
* If this adapter is the primary, use its post-init BIOS (if we can find
|
|
* it).
|
|
*/
|
|
{
|
|
int bios_location = V_BIOS;
|
|
Bool done = FALSE;
|
|
vbiosMem = (unsigned char *)base + bios_location;
|
|
|
|
if (xf86IsEntityPrimary(entityIndex)) {
|
|
if (int10_check_bios(screen, bios_location >> 4, vbiosMem))
|
|
done = TRUE;
|
|
else
|
|
xf86DrvMsg(screen,X_INFO,
|
|
"No legacy BIOS found -- trying PCI\n");
|
|
}
|
|
if (!done) {
|
|
int err;
|
|
struct pci_device *rom_device =
|
|
xf86GetPciInfoForEntity(pInt->entityIndex);
|
|
|
|
err = pci_device_read_rom(rom_device, vbiosMem);
|
|
if (err) {
|
|
xf86DrvMsg(screen,X_ERROR,"Cannot read V_BIOS (5) %s\n",
|
|
strerror(err));
|
|
goto error1;
|
|
}
|
|
}
|
|
}
|
|
|
|
pInt->BIOSseg = V_BIOS >> 4;
|
|
pInt->num = 0xe6;
|
|
LockLegacyVGA(pInt, &vga);
|
|
xf86ExecX86int10(pInt);
|
|
UnlockLegacyVGA(pInt, &vga);
|
|
#endif
|
|
xfree(options);
|
|
return pInt;
|
|
|
|
error1:
|
|
xfree(base);
|
|
UnmapVRam(pInt);
|
|
xfree(INTPriv(pInt)->alloc);
|
|
xfree(pInt->private);
|
|
error0:
|
|
xfree(pInt);
|
|
xfree(options);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void
|
|
MapVRam(xf86Int10InfoPtr pInt)
|
|
{
|
|
int pagesize = getpagesize();
|
|
int size = ((VRAM_SIZE + pagesize - 1) / pagesize) * pagesize;
|
|
|
|
INTPriv(pInt)->vRam = xf86MapDomainMemory(pInt->scrnIndex, VIDMEM_MMIO,
|
|
pInt->dev, V_RAM, size);
|
|
|
|
pInt->ioBase = xf86Screens[pInt->scrnIndex]->domainIOBase;
|
|
}
|
|
|
|
static void
|
|
UnmapVRam(xf86Int10InfoPtr pInt)
|
|
{
|
|
int screen = pInt->scrnIndex;
|
|
int pagesize = getpagesize();
|
|
int size = ((VRAM_SIZE + pagesize - 1)/pagesize) * pagesize;
|
|
|
|
xf86UnMapVidMem(screen, INTPriv(pInt)->vRam, size);
|
|
}
|
|
|
|
Bool
|
|
MapCurrentInt10(xf86Int10InfoPtr pInt)
|
|
{
|
|
/* nothing to do here */
|
|
return TRUE;
|
|
}
|
|
|
|
void
|
|
xf86FreeInt10(xf86Int10InfoPtr pInt)
|
|
{
|
|
if (!pInt)
|
|
return;
|
|
#if defined (_PC)
|
|
xf86Int10SaveRestoreBIOSVars(pInt, FALSE);
|
|
#endif
|
|
if (Int10Current == pInt)
|
|
Int10Current = NULL;
|
|
xfree(INTPriv(pInt)->base);
|
|
UnmapVRam(pInt);
|
|
xfree(INTPriv(pInt)->alloc);
|
|
xfree(pInt->private);
|
|
xfree(pInt);
|
|
}
|
|
|
|
void *
|
|
xf86Int10AllocPages(xf86Int10InfoPtr pInt, int num, int *off)
|
|
{
|
|
int pagesize = getpagesize();
|
|
int num_pages = ALLOC_ENTRIES(pagesize);
|
|
int i,j;
|
|
|
|
for (i = 0; i < (num_pages - num); i++) {
|
|
if (INTPriv(pInt)->alloc[i] == 0) {
|
|
for (j = i; j < (num + i); j++)
|
|
if (INTPriv(pInt)->alloc[j] != 0)
|
|
break;
|
|
if (j == (num + i))
|
|
break;
|
|
i += num;
|
|
}
|
|
}
|
|
if (i == (num_pages - num))
|
|
return NULL;
|
|
|
|
for (j = i; j < (i + num); j++)
|
|
INTPriv(pInt)->alloc[j] = 1;
|
|
|
|
*off = (i + 1) * pagesize;
|
|
|
|
return (char *)INTPriv(pInt)->base + *off;
|
|
}
|
|
|
|
void
|
|
xf86Int10FreePages(xf86Int10InfoPtr pInt, void *pbase, int num)
|
|
{
|
|
int pagesize = getpagesize();
|
|
int first = (((char *)pbase - (char *)INTPriv(pInt)->base) / pagesize) - 1;
|
|
int i;
|
|
|
|
for (i = first; i < (first + num); i++)
|
|
INTPriv(pInt)->alloc[i] = 0;
|
|
}
|
|
|
|
#define OFF(addr) ((addr) & 0xffff)
|
|
#if defined _PC
|
|
# define HIGH_OFFSET (INTPriv(pInt)->highMemory)
|
|
# define HIGH_BASE V_BIOS
|
|
#else
|
|
# define HIGH_OFFSET SYS_BIOS
|
|
# define HIGH_BASE SYS_BIOS
|
|
#endif
|
|
# define SYS(addr) ((addr) >= HIGH_OFFSET)
|
|
#define V_ADDR(addr) \
|
|
(SYS(addr) ? ((char*)INTPriv(pInt)->sysMem) + (addr - HIGH_BASE) \
|
|
: (((char*)(INTPriv(pInt)->base) + addr)))
|
|
#define VRAM_ADDR(addr) (addr - V_RAM)
|
|
#define VRAM_BASE (INTPriv(pInt)->vRam)
|
|
|
|
#define VRAM(addr) ((addr >= V_RAM) && (addr < (V_RAM + VRAM_SIZE)))
|
|
#define V_ADDR_RB(addr) \
|
|
(VRAM(addr)) ? MMIO_IN8((CARD8*)VRAM_BASE,VRAM_ADDR(addr)) \
|
|
: *(CARD8*) V_ADDR(addr)
|
|
#define V_ADDR_RW(addr) \
|
|
(VRAM(addr)) ? MMIO_IN16((CARD16*)VRAM_BASE,VRAM_ADDR(addr)) \
|
|
: ldw_u((pointer)V_ADDR(addr))
|
|
#define V_ADDR_RL(addr) \
|
|
(VRAM(addr)) ? MMIO_IN32((CARD32*)VRAM_BASE,VRAM_ADDR(addr)) \
|
|
: ldl_u((pointer)V_ADDR(addr))
|
|
|
|
#define V_ADDR_WB(addr,val) \
|
|
if(VRAM(addr)) \
|
|
MMIO_OUT8((CARD8*)VRAM_BASE,VRAM_ADDR(addr),val); \
|
|
else \
|
|
*(CARD8*) V_ADDR(addr) = val;
|
|
#define V_ADDR_WW(addr,val) \
|
|
if(VRAM(addr)) \
|
|
MMIO_OUT16((CARD16*)VRAM_BASE,VRAM_ADDR(addr),val); \
|
|
else \
|
|
stw_u((val),(pointer)(V_ADDR(addr)));
|
|
|
|
#define V_ADDR_WL(addr,val) \
|
|
if (VRAM(addr)) \
|
|
MMIO_OUT32((CARD32*)VRAM_BASE,VRAM_ADDR(addr),val); \
|
|
else \
|
|
stl_u(val,(pointer)(V_ADDR(addr)));
|
|
|
|
static CARD8
|
|
read_b(xf86Int10InfoPtr pInt, int addr)
|
|
{
|
|
return V_ADDR_RB(addr);
|
|
}
|
|
|
|
static CARD16
|
|
read_w(xf86Int10InfoPtr pInt, int addr)
|
|
{
|
|
#if X_BYTE_ORDER == X_LITTLE_ENDIAN
|
|
if (OFF(addr + 1) > 0)
|
|
return V_ADDR_RW(addr);
|
|
#endif
|
|
return V_ADDR_RB(addr) | (V_ADDR_RB(addr + 1) << 8);
|
|
}
|
|
|
|
static CARD32
|
|
read_l(xf86Int10InfoPtr pInt, int addr)
|
|
{
|
|
#if X_BYTE_ORDER == X_LITTLE_ENDIAN
|
|
if (OFF(addr + 3) > 2)
|
|
return V_ADDR_RL(addr);
|
|
#endif
|
|
return V_ADDR_RB(addr) |
|
|
(V_ADDR_RB(addr + 1) << 8) |
|
|
(V_ADDR_RB(addr + 2) << 16) |
|
|
(V_ADDR_RB(addr + 3) << 24);
|
|
}
|
|
|
|
static void
|
|
write_b(xf86Int10InfoPtr pInt, int addr, CARD8 val)
|
|
{
|
|
V_ADDR_WB(addr,val);
|
|
}
|
|
|
|
static void
|
|
write_w(xf86Int10InfoPtr pInt, int addr, CARD16 val)
|
|
{
|
|
#if X_BYTE_ORDER == X_LITTLE_ENDIAN
|
|
if (OFF(addr + 1) > 0)
|
|
{ V_ADDR_WW(addr, val); }
|
|
#endif
|
|
V_ADDR_WB(addr, val);
|
|
V_ADDR_WB(addr + 1, val >> 8);
|
|
}
|
|
|
|
static void
|
|
write_l(xf86Int10InfoPtr pInt, int addr, CARD32 val)
|
|
{
|
|
#if X_BYTE_ORDER == X_LITTLE_ENDIAN
|
|
if (OFF(addr + 3) > 2)
|
|
{ V_ADDR_WL(addr, val); }
|
|
#endif
|
|
V_ADDR_WB(addr, val);
|
|
V_ADDR_WB(addr + 1, val >> 8);
|
|
V_ADDR_WB(addr + 2, val >> 16);
|
|
V_ADDR_WB(addr + 3, val >> 24);
|
|
}
|
|
|
|
pointer
|
|
xf86int10Addr(xf86Int10InfoPtr pInt, CARD32 addr)
|
|
{
|
|
return V_ADDR(addr);
|
|
}
|