/* begin_iring - prepares the ringbuffer
* @space: length of sequence in dwords
* @par: pointer to i810fb_par structure
*
* DESCRIPTION:
* Checks/waits for sufficent space in ringbuffer of size
* space. Returns the tail of the buffer
*/
static inline u32 begin_iring(struct fb_info *info, u32 space)
{
struct i810fb_par *par = (struct i810fb_par *) info->par;
if (par->dev_flags & ALWAYS_SYNC)
wait_for_engine_idle(info);
return wait_for_space(info, space);
}
/**
* wait_for_engine_idle - waits for all hardware engines to finish
* @par: pointer to i810fb_par structure
*
* DESCRIPTION:
* This waits for lring(0), iring(1), and batch(3), etc to finish and
* waits until ringbuffer is empty.
*/
static inline int wait_for_engine_idle(struct fb_info *info)
{
struct i810fb_par *par = (struct i810fb_par *) info->par;
u8 *mmio = par->mmio_start_virtual;
int count = WAIT_COUNT;
if (wait_for_space(info, par->iring.size)) /* flush */
return 1;
while((i810_readw(INSTDONE, mmio) & 0x7B) != 0x7B && --count);
if (count) return 0;
printk("accel engine lockup!!!\n");
printk("INSTDONE: 0x%04x\n", i810_readl(INSTDONE, mmio));
i810_report_error(mmio);
par->dev_flags |= LOCKUP;
info->pixmap.scan_align = 1;
return 1;
}
void PixelPipeline::queue(std::unique_ptr<PixelCommand> &command)
{
wait_for_space();
delete command_queue[local_writer_index];
#if defined(WIN32) && defined(PROFILE_PIPELINE)
unsigned __int64 start_time = __rdtsc();
#endif
command_queue[local_writer_index] = command.get();
command.release();
local_writer_index++;
if (local_writer_index == queue_max)
local_writer_index = 0;
local_commands_written++;
if (local_commands_written == fragment_size)
{
cl_compiler_barrier();
writer_index.set(local_writer_index);
local_commands_written = 0;
#if defined(WIN32) && defined(PROFILE_PIPELINE)
unsigned __int64 start_event_time = __rdtsc();
#endif
for (int i = 0; i < active_cores; i++)
{
if (reader_active[i].get() == 0)
event_more_commands[i].set();
}
#if defined(WIN32) && defined(PROFILE_PIPELINE)
unsigned __int64 end_event_time = __rdtsc();
profiler.set_event_time += end_event_time-start_event_time;
#endif
}
#if defined(WIN32) && defined(PROFILE_PIPELINE)
unsigned __int64 end_time = __rdtsc();
profiler.queue_time += end_time-start_time;
#endif
}
