/* BLT Engine Routines */
static inline void i810_report_error(u8 *mmio)
{
printk("IIR : 0x%04x\n"
"EIR : 0x%04x\n"
"PGTBL_ER: 0x%04x\n"
"IPEIR : 0x%04x\n"
"IPEHR : 0x%04x\n",
i810_readw(IIR, mmio),
i810_readb(EIR, mmio),
i810_readl(PGTBL_ER, mmio),
i810_readl(IPEIR, mmio),
i810_readl(IPEHR, mmio));
}
/**
* 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;
}
static inline void
i810_wait_for_blit_idle(I810DriverData *i810drv,
I810DeviceData *i810dev )
{
u32 count = 0;
if (i810dev != NULL)
i810dev->idle_calls++;
while ((i810_readw(i810drv->mmio_base, INSTDONE) & 0x7b) != 0x7b &&
count++ < TIMER_LOOP) {
if (i810dev != NULL)
i810dev->idle_waitcycles++;
}
if (count >= TIMER_LOOP) {
if (i810dev != NULL)
i810dev->idle_timeoutsum++;
D_BUG("warning: idle timeout exceeded");
}
}