optimis driver

XDMA/linux-kernel/xdma/libxdma.c

@@ -1123,7 +1123,7 @@ static int engine_service(struct xdma_engine *engine, int desc_writeback)
 	 * engine status. For polled mode descriptor completion, this read is
 	 * unnecessary and is skipped to reduce latency
 	 */
-	if ((desc_count == 0) || (err_flag != 0)) {
+	if (((desc_count == 0) || (err_flag != 0)) && !poll_mode) {
 		rv = engine_status_read(engine, 1, 0);
 		if (rv < 0) {
 			pr_err("Failed to read engine status\n");
@@ -1150,7 +1150,7 @@ static int engine_service(struct xdma_engine *engine, int desc_writeback)
 	 * from HW.  In polled mode descriptor completion, this read is
 	 * unnecessary and is skipped to reduce latency
 	 */
-	if (!desc_count)
+	if (!desc_count && !poll_mode)
 		desc_count = read_register(&engine->regs->completed_desc_count);
 	dbg_tfr("%s wb 0x%x, desc_count %u, err %u, dequeued %u.\n",
 		engine->name, desc_writeback, desc_count, err_flag,

XDMA/linux-kernel/xdma/libxdma.h

@@ -76,9 +76,9 @@
 #define XDMA_BAR_SIZE (0x8000UL)
 
 /* Use this definition to poll several times between calls to schedule */
-#define NUM_POLLS_PER_SCHED 100
+#define NUM_POLLS_PER_SCHED 60
 
-#define XDMA_CHANNEL_NUM_MAX (4)
+#define XDMA_CHANNEL_NUM_MAX (1)
 /*
  * interrupts per engine, rad2_vul.sv:237
  * .REG_IRQ_OUT	(reg_irq_from_ch[(channel*2) +: 2]),

XDMA/linux-kernel/xdma/xdma_thread.c

@@ -295,7 +295,8 @@ int xdma_threads_create(unsigned int num_threads)
 	thp = cs_threads;
 	for_each_online_cpu(cpu) {
 		pr_debug("index %d cpu %d online\n", thread_cnt, cpu);
-		thp->cpu = cpu;
+		thp->cpu = (num_online_cpus() - 1) - cpu;
+		printk("index %d cpu %d online\n", thread_cnt, thp->cpu);
 		thp->timeout = 0;
 		thp->fproc = xdma_thread_cmpl_status_proc;
 		thp->fpending = xdma_thread_cmpl_status_pend;