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/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/ati/atimach64io.h,v 1.15 2003/04/23 21:51:29 tsi Exp $ */
/*
* Copyright 2000 through 2004 by Marc Aurele La France (TSI @ UQV), tsi@xfree86.org
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that copyright
* notice and this permission notice appear in supporting documentation, and
* that the name of Marc Aurele La France not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. Marc Aurele La France makes no representations
* about the suitability of this software for any purpose. It is provided
* "as-is" without express or implied warranty.
*
* MARC AURELE LA FRANCE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO
* EVENT SHALL MARC AURELE LA FRANCE BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef ___ATIMACH64IO_H___
#if !defined(___ATI_H___) && defined(XFree86Module)
# error Missing #include "ati.h" before #include "atimach64io.h"
# undef XFree86Module
#endif
#define ___ATIMACH64IO_H___ 1
#include "atiio.h"
#include "atistruct.h"
/*
* A few important notes on some of the I/O statements provided:
*
* inl/outl 32-bit R/W through PIO space. The register is specified as the
* actual PIO address. These are actually defined in compiler.h.
*
* inw/outw 16-bit counterparts to inl/outl. Not used for Mach64 support.
*
* inb/outb 8-bit counterparts to inl/outl.
*
* inm/outm 32-bit R/W through MMIO space. The register is specified as
* the actual MMIO offset (with Block 1 following Block 0), which,
* in this case, is equivalent to the register's IOPortTag from
* atiregs.h. Can be used for those few non-FIFO'ed registers
* outside of Block 0's first 256 bytes. inm() can also be used
* for FIFO'ed registers if, and only if, it can be guaranteed to
* not have been previously FIFO'ed (e.g. when the engine is
* idle). pATI->pBlock array elements must have been previously
* set up by ATIMapApertures().
*
* outf 32-bit write through MMIO cache. Identical to outm() but
* intended for FIFO'ed registers. There is no inf() provided.
*
* inr/outr 32-bit R/W through PIO or MMIO. Which one depends on the
* machine architecture. The register is specified as a IOPortTag
* from atiregs.h. Can only be used for registers in the first
* 256 bytes of MMIO space (in Block 0). Note that all of these
* registers are non-FIFO'ed.
*
* in8/out8 8-bit counterparts to inr/outr.
*
* For portability reasons, inr/outr/in8/out8 should be used in preference to
* inl/outl/inb/outb to/from any register space starting with CRTC_H_TOTAL_DISP
* but before DST_OFF_PITCH (in the order defined by atiregs.h). None of
* inm/outm/outf should ever be used for these registers.
*
* outf()'s should be grouped together as much as possible, while respecting
* any ordering constraints the engine might impose. Groups larger than 16
* outf()'s should be split up into two or more groups as needed (but not
* necessarily wanted). The outf() groups that result should be immediately
* preceeded by an ATIMach64WaitForFIFO(n) call, where "n" is the number of
* outf()'s in the group with the exception that groups containing a single
* outf() should not be thus preceeded. This means "n" should not be less than
* 2, nor larger than 16.
*/
/*
* Cave canem (or it WILL bite you): All Mach64 non-VGA registers are
* ================================ little-endian, no matter how they are
* accessed (nor by what).
*/
#define inm(_Register) \
MMIO_IN32(pATI->pBlock[GetBits(_Register, BLOCK_SELECT)], \
(_Register) & MM_IO_SELECT)
#define outm(_Register, _Value) \
MMIO_OUT32(pATI->pBlock[GetBits(_Register, BLOCK_SELECT)], \
(_Register) & MM_IO_SELECT, _Value)
#ifdef AVOID_CPIO
# define inr(_Register) \
MMIO_IN32(pATI->pBlock[0], (_Register) & MM_IO_SELECT)
# define outr(_Register, _Value) \
MMIO_OUT32(pATI->pBlock[0], (_Register) & MM_IO_SELECT, _Value)
# define in8(_Register) \
MMIO_IN8(pATI->pBlock[0], \
(_Register) & (MM_IO_SELECT | IO_BYTE_SELECT))
# define out8(_Register, _Value) \
MMIO_OUT8(pATI->pBlock[0], \
(_Register) & (MM_IO_SELECT | IO_BYTE_SELECT), _Value)
/* Cause a cpp syntax error if any of these are used */
#undef inb
#undef inw
#undef inl
#undef outb
#undef outw
#undef outl
#define inb() /* Nothing */
#define inw() /* Nothing */
#define inl() /* Nothing */
#define outb() /* Nothing */
#define outw() /* Nothing */
#define outl() /* Nothing */
#else /* AVOID_CPIO */
# define ATIIOPort(_PortTag) \
(((pATI->CPIODecoding == SPARSE_IO) ? \
((_PortTag) & (SPARSE_IO_SELECT | IO_BYTE_SELECT)) : \
((_PortTag) & (BLOCK_IO_SELECT | IO_BYTE_SELECT))) | \
pATI->CPIOBase)
# define inr(_Register) \
inl(ATIIOPort(_Register))
# define outr(_Register, _Value) \
outl(ATIIOPort(_Register), _Value)
# define in8(_Register) \
inb(ATIIOPort(_Register))
# define out8(_Register, _Value) \
outb(ATIIOPort(_Register), _Value)
#endif /* AVOID_CPIO */
extern void ATIMach64PollEngineStatus FunctionPrototype((ATIPtr));
/*
* MMIO cache definitions.
*
* Many FIFO'ed registers can be cached by the driver. Registers that qualify
* for caching must not contain values that can change without driver
* intervention. Thus registers that contain hardware counters, strobe lines,
* etc., cannot be cached. This caching is intended to minimise FIFO use.
* There is therefore not much point to enable it for non-FIFO'ed registers.
*
* The cache for a particular 32-bit register is enabled by coding a
* CacheRegister() line for that register in the ATIMach64Set() function. The
* integrity of the cache for a particular register should be verified by the
* ATIMach64Sync() function. This code should be kept in register order, as
* defined in atiregs.h.
*/
#define CacheByte(___Register) pATI->MMIOCached[CacheSlotOf(___Register) >> 3]
#define CacheBit(___Register) (0x80U >> (CacheSlotOf(___Register) & 0x07U))
#define RegisterIsCached(__Register) \
(CacheByte(__Register) & CacheBit(__Register))
#define CacheSlot(__Register) pATI->MMIOCache[CacheSlotOf(__Register)]
#define CacheRegister(__Register) \
CacheByte(__Register) |= CacheBit(__Register)
#define UncacheRegister(__Register) \
CacheByte(__Register) &= ~CacheBit(__Register)
/* This would be quite a bit slower as a function */
#define outf(_Register, _Value) \
do \
{ \
CARD32 _IOValue = (_Value); \
\
if (!RegisterIsCached(_Register) || \
(_IOValue != CacheSlot(_Register))) \
{ \
while (!pATI->nAvailableFIFOEntries--) \
ATIMach64PollEngineStatus(pATI); \
MMIO_OUT32(pATI->pBlock[GetBits(_Register, BLOCK_SELECT)], \
(_Register) & MM_IO_SELECT, _IOValue); \
CacheSlot(_Register) = _IOValue; \
pATI->EngineIsBusy = TRUE; \
} \
} while (0)
/*
* This is no longer as critical, especially for _n == 1. However,
* there is still a need to ensure _n <= pATI->nFIFOEntries.
*/
#define ATIMach64WaitForFIFO(_pATI, _n) \
while ((_pATI)->nAvailableFIFOEntries < (_n)) \
ATIMach64PollEngineStatus(_pATI)
#define ATIMach64WaitForIdle(_pATI) \
while ((_pATI)->EngineIsBusy) \
ATIMach64PollEngineStatus(_pATI)
/*
* An outf() variant to write two registers such that the second register is
* is always written whenever either is to be changed.
*/
#define outq(_Register1, _Register2, _Value1, _Value2) \
do \
{ \
CARD32 _IOValue1 = (_Value1), \
_IOValue2 = (_Value2); \
\
if (!RegisterIsCached(_Register1) || \
(_IOValue1 != CacheSlot(_Register1))) \
{ \
ATIMach64WaitForFIFO(pATI, 2); \
pATI->nAvailableFIFOEntries -= 2; \
MMIO_OUT32(pATI->pBlock[GetBits(_Register1, BLOCK_SELECT)], \
(_Register1) & MM_IO_SELECT, _IOValue1); \
MMIO_OUT32(pATI->pBlock[GetBits(_Register2, BLOCK_SELECT)], \
(_Register2) & MM_IO_SELECT, _IOValue2); \
CacheSlot(_Register1) = _IOValue1; \
CacheSlot(_Register2) = _IOValue2; \
pATI->EngineIsBusy = TRUE; \
} \
else if (!RegisterIsCached(_Register2) || \
(_IOValue2 != CacheSlot(_Register2))) \
{ \
while (!pATI->nAvailableFIFOEntries--) \
ATIMach64PollEngineStatus(pATI); \
MMIO_OUT32(pATI->pBlock[GetBits(_Register2, BLOCK_SELECT)], \
(_Register2) & MM_IO_SELECT, _IOValue2); \
CacheSlot(_Register2) = _IOValue2; \
pATI->EngineIsBusy = TRUE; \
} \
} while (0)
extern void ATIMach64AccessPLLReg FunctionPrototype((ATIPtr, const CARD8,
const Bool));
#define ATIMach64GetPLLReg(_Index) \
( \
ATIMach64AccessPLLReg(pATI, _Index, FALSE), \
in8(CLOCK_CNTL + 2) \
)
#define ATIMach64PutPLLReg(_Index, _Value) \
do \
{ \
ATIMach64AccessPLLReg(pATI, _Index, TRUE); \
out8(CLOCK_CNTL + 2, _Value); \
} while (0)
#define ATIMach64GetLCDReg(_Index) \
( \
out8(LCD_INDEX, SetBits(_Index, LCD_REG_INDEX)), \
inr(LCD_DATA) \
)
#define ATIMach64PutLCDReg(_Index, _Value) \
do \
{ \
out8(LCD_INDEX, SetBits(_Index, LCD_REG_INDEX)); \
outr(LCD_DATA, _Value); \
} while (0)
#define ATIMach64GetTVReg(_Index) \
( \
out8(TV_OUT_INDEX, SetBits(_Index, TV_REG_INDEX)), \
inr(TV_OUT_DATA) \
)
#define ATIMach64PutTVReg(_Index, _Value) \
do \
{ \
out8(TV_OUT_INDEX, SetBits(_Index, TV_REG_INDEX)); \
outr(TV_OUT_DATA, _Value); \
} while (0)
/*
* Block transfer definitions.
*/
#if defined(GCCUSESGAS) && \
(defined(i386) || defined(__i386) || defined(__i386__))
#define ATIMove32(_pDst, _pSrc, _nCount) \
do \
{ \
long d0, d1, d2; \
__asm__ __volatile__ \
( \
"cld\n\t" \
"rep ; movsl" \
: "=&c" (d0), \
"=&D" (d1), \
"=&S" (d2) \
: "0" (_nCount), \
"1" (_pDst), \
"2" (_pSrc) \
: "memory" \
); \
} while (0)
#endif
#endif /* ___ATIMACH64IO_H___ */
|
