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/*
* Copyright 2007 OpenMoko, Inc.
*
* This driver is based on Xati,
* Copyright 2004 Eric Anholt
*
* 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 the copyright holders not be used in advertising or
* publicity pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no representations
* about the suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS 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 _GLAMO_DMA_H_
#define _GLAMO_DMA_H_
#define CCE_DEBUG 0
#if !CCE_DEBUG
#define RING_LOCALS CARD16 *__head; int __count
#define BEGIN_CMDQ(n) \
do { \
if ((pGlamo->cmd_queue->used + 2 * (n)) > \
pGlamo->cmd_queue->size) { \
GLAMODispatchCMDQ(pGlamo); \
} \
__head = (CARD16 *)((char *)pGlamo->cmd_queue->data + \
pGlamo->cmd_queue->used); \
__count = 0; \
} while (0)
#define END_CMDQ() do { \
pGlamo->cmd_queue->used += __count * 2; \
} while (0)
#define OUT_BURST_REG(reg, val) do { \
__head[__count++] = (val); \
} while (0)
#define OUT_BURST(reg, n) \
do { \
OUT_PAIR((1 << 15) | reg, n); \
} while (0)
#else
#define RING_LOCALS \
CARD16 *__head; int __count, __total, __reg, __packet0count
#define BEGIN_CMDQ(n) \
do { \
if ((pGlamo->cmd_queue->used + 2 * (n)) > \
pGlamo->cmd_queue->size) { \
GLAMODispatchCMDQ(pGlamo); \
} \
__head = (CARD16 *)((char *)pGlamo->cmd_queue->data + \
pGlamo->cmd_queue->used); \
__count = 0; \
__total = n; \
__reg = 0; \
__packet0count = 0; \
} while (0)
#define END_CMDQ() do { \
if (__count != __total) \
FatalError("count != total (%d vs %d) at %s:%d\n", \
__count, __total, __FILE__, __LINE__); \
pGlamo->cmd_queue->used += __count * 2; \
} while (0)
#define OUT_BURST_REG(reg, val) do { \
if (__reg != reg) \
FatalError("unexpected reg (0x%x vs 0x%x) at %s:%d\n", \
reg, __reg, __FILE__, __LINE__); \
if (__packet0count-- <= 0) \
FatalError("overrun of packet0 at %s:%d\n", \
__FILE__, __LINE__); \
__head[__count++] = (val); \
__reg += 2; \
} while (0)
#define OUT_BURST(reg, n) \
do { \
OUT_PAIR((1 << 15) | reg, n); \
__reg = reg; \
__packet0count = n; \
} while (0)
#endif
#define OUT_PAIR(v1, v2) \
do { \
__head[__count++] = (v1); \
__head[__count++] = (v2); \
} while (0)
#define OUT_REG(reg, val) \
OUT_PAIR(reg, val)
#define TIMEOUT_LOCALS struct timeval _target, _curtime
static inline Bool
tv_le(struct timeval *tv1, struct timeval *tv2)
{
if (tv1->tv_sec < tv2->tv_sec ||
(tv1->tv_sec == tv2->tv_sec && tv1->tv_usec < tv2->tv_usec))
return TRUE;
else
return FALSE;
}
#define WHILE_NOT_TIMEOUT(_timeout) \
gettimeofday(&_target, NULL); \
_target.tv_usec += ((_timeout) * 1000000); \
_target.tv_sec += _target.tv_usec / 1000000; \
_target.tv_usec = _target.tv_usec % 1000000; \
while (gettimeofday(&_curtime, NULL), tv_le(&_curtime, &_target))
#define TIMEDOUT() (!tv_le(&_curtime, &_target))
void
GLAMODispatchCMDQ(GlamoPtr pGlamo);
size_t
GLAMOCMDQInit(ScrnInfoPtr pScrn, size_t mem_start, size_t mem_size);
Bool
GLAMOCMDQEnable(ScrnInfoPtr pScrn);
void
GLAMOCMDQDisable(ScrnInfoPtr pScrn);
void
GLAMOCMDQFini(ScrnInfoPtr pScrn);
#endif /* _GLAMO_DMA_H_ */
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