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ARC: [arcfpga] Get rid of legacy BVCI latency unit support

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Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
This commit is contained in:
Vineet Gupta 2014-06-03 13:28:32 +05:30
parent 26bc8a9fcf
commit c00bfd974f
2 changed files with 0 additions and 87 deletions
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55
arch/arc/plat-arcfpga/platform.c
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@ -22,59 +22,6 @@
#include <plat/smp.h>
#include <plat/irq.h>
/*-----------------------BVCI Latency Unit -----------------------------*/
#ifdef CONFIG_ARC_HAS_BVCI_LAT_UNIT
int lat_cycles = CONFIG_BVCI_LAT_CYCLES;
/* BVCI Bus Profiler: Latency Unit */
static void __init setup_bvci_lat_unit(void)
{
#define MAX_BVCI_UNITS 12
unsigned int i;
unsigned int *base = (unsigned int *)BVCI_LAT_UNIT_BASE;
const unsigned long units_req = CONFIG_BVCI_LAT_UNITS;
const unsigned int REG_UNIT = 21;
const unsigned int REG_VAL = 22;
/*
* There are multiple Latency Units corresponding to the many
* interfaces of the system bus arbiter (both CPU side as well as
* the peripheral side).
*
* Unit 0 - System Arb and Mem Controller - adds latency to all
* memory trasactions
* Unit 1 - I$ and System Bus
* Unit 2 - D$ and System Bus
* ..
* Unit 12 - IDE Disk controller and System Bus
*
* The programmers model requires writing to lat_unit reg first
* and then the latency value (cycles) to lat_value reg
*/
if (CONFIG_BVCI_LAT_UNITS == 0) {
writel(0, base + REG_UNIT);
writel(lat_cycles, base + REG_VAL);
pr_info("BVCI Latency for all Memory Transactions %d cycles\n",
lat_cycles);
} else {
for_each_set_bit(i, &units_req, MAX_BVCI_UNITS) {
writel(i + 1, base + REG_UNIT); /* loop is 0 based */
writel(lat_cycles, base + REG_VAL);
pr_info("BVCI Latency for Unit[%d] = %d cycles\n",
(i + 1), lat_cycles);
}
}
}
#else
static void __init setup_bvci_lat_unit(void)
{
}
#endif
/*----------------------- Platform Devices -----------------------------*/
#if IS_ENABLED(CONFIG_SERIAL_ARC)
@ -165,8 +112,6 @@ static void __init plat_fpga_early_init(void)
{
pr_info("[plat-arcfpga]: registering early dev resources\n");
setup_bvci_lat_unit();
arc_fpga_serial_init();
#ifdef CONFIG_ISS_SMP_EXTN