static int thread_func(void *data)
{
thread_running = 1;
cacheperf();
thread_running = 0;
return 0;
}
static int perfmain(void)
{
phys_addr_t dmasrc, dmadst;
void *srcbuf[MT_MAX];
void *dstbuf[MT_MAX];
u32 xfer_size;
srcbuf[MT_WBWA] = kmalloc(END_SIZE, GFP_KERNEL);
dstbuf[MT_WBWA] = kmalloc(END_SIZE, GFP_KERNEL);
srcbuf[MT_NC] = dma_alloc_writecombine(
NULL, mcpy_size, &dmasrc, GFP_KERNEL);
dstbuf[MT_NC] = dma_alloc_writecombine(
NULL, mcpy_size, &dmadst, GFP_KERNEL);
if (!srcbuf[MT_WBWA] && !srcbuf[MT_NC] &&
!dstbuf[MT_WBWA] && !dstbuf[MT_NC]) {
printk(KERN_ERR "Memory allocation error!\n");
dma_free_coherent(NULL, mcpy_size, srcbuf[MT_NC], dmasrc);
dma_free_coherent(NULL, mcpy_size, dstbuf[MT_NC], dmadst);
kfree(srcbuf[MT_WBWA]);
kfree(dstbuf[MT_WBWA]);
return 0;
}
if (mcpy) {
printk(KERN_INFO "## Memcpy perf (ns, unit tr size: %dKB)\n",
mcpy_size/SZ_1K);
if (mcpy >= MT_SO) {
printk(KERN_INFO "1. SO type\n");
srcbuf[MT_SO] = remap_vm(dmasrc, mcpy_size,
pgprot_noncached(PAGE_KERNEL));
dstbuf[MT_SO] = remap_vm(dmadst, mcpy_size,
pgprot_noncached(PAGE_KERNEL));
xfer_size = START_SIZE;
while (xfer_size <= END_SIZE) {
memcpyperf(srcbuf[MT_SO], dstbuf[MT_SO],
xfer_size, 10);
xfer_size *= 2;
}
vunmap(srcbuf[MT_SO]);
vunmap(dstbuf[MT_SO]);
}
if (mcpy >= MT_NC) {
printk(KERN_INFO "2. Normal NCNB type\n");
xfer_size = START_SIZE;
while (xfer_size <= END_SIZE) {
memcpyperf(srcbuf[MT_NC], dstbuf[MT_NC],
xfer_size, 10);
xfer_size *= 2;
}
}
printk(KERN_INFO "3. Cache memcpy\n");
printk(KERN_INFO "scramble size:");
memcpyperf(srcbuf[MT_WBWA], dstbuf[MT_WBWA],
SCRAMBLE_SIZE, try_cnt);
memset(dstbuf[MT_WBWA], 0x0, SCRAMBLE_SIZE);
printk(KERN_INFO "small size:");
memcpyperf(srcbuf[MT_WBWA], dstbuf[MT_WBWA],
SMALL_SIZE, try_cnt);
memset(dstbuf[MT_WBWA], 0x0, SMALL_SIZE);
printk(KERN_INFO "size (%d ~ %d)\n ", START_SIZE, END_SIZE);
xfer_size = START_SIZE;
while (xfer_size <= END_SIZE) {
memcpyperf(srcbuf[MT_WBWA], dstbuf[MT_WBWA],
xfer_size, try_cnt);
xfer_size *= 2;
}
}
if (cm) {
printk(KERN_INFO "## Memcpy perf (ns)\n");
printk(KERN_INFO "1. Clean perf\n");
cacheperf(srcbuf[MT_WBWA], CM_CLEAN);
printk(KERN_INFO "2. Invalidate perf\n");
cacheperf(srcbuf[MT_WBWA], CM_INV);
printk(KERN_INFO "3. Flush perf\n");
cacheperf(srcbuf[MT_WBWA], CM_FLUSH);
printk(KERN_INFO "4. Flush all perf\n");
cacheperf(srcbuf[MT_WBWA], CM_FLUSHALL);
}
dma_free_coherent(NULL, mcpy_size, srcbuf[MT_NC], dmasrc);
dma_free_coherent(NULL, mcpy_size, dstbuf[MT_NC], dmadst);
kfree(srcbuf[MT_WBWA]);
kfree(dstbuf[MT_WBWA]);
return 0;
}
