ECC initialization takes too long. It writes zeroes by portions of 4 byte, it takes more than 6 minutes to initialize 512Mb DIMM module. Change portion to 1Mb. before: [10857.207576] pdc20621_dimm_init: Start ECC initialization [11235.333118] pdc20621_dimm_init: Finish ECC initialization after: [ 1005.126437] pdc20621_dimm_init: Local DIMM Speed = 100 [ 1005.128111] pdc20621_dimm_init: Local DIMM Size = 512MB [ 1005.133508] Local DIMM ECC Enabled [ 1005.236482] pdc20621_dimm_init: Start ECC initialization [ 1031.278098] pdc20621_dimm_init: Finish ECC initialization Signed-off-by: Alexander Beregalov <a.beregalov@xxxxxxxxx> --- drivers/ata/sata_sx4.c | 10 ++++++---- 1 files changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/ata/sata_sx4.c b/drivers/ata/sata_sx4.c index dce3dcc..d329501 100644 --- a/drivers/ata/sata_sx4.c +++ b/drivers/ata/sata_sx4.c @@ -1208,7 +1208,6 @@ static unsigned int pdc20621_dimm_init(struct ata_host *host) { int speed, size, length; u32 addr, spd0, pci_status; - u32 tmp = 0; u32 time_period = 0; u32 tcount = 0; u32 ticks = 0; @@ -1323,14 +1322,17 @@ static unsigned int pdc20621_dimm_init(struct ata_host *host) pdc20621_i2c_read(host, PDC_DIMM0_SPD_DEV_ADDRESS, PDC_DIMM_SPD_TYPE, &spd0); if (spd0 == 0x02) { + void *buf; VPRINTK("Start ECC initialization\n"); addr = 0; length = size * 1024 * 1024; + buf = kzalloc(PDC_20621_PAGE_SIZE * 32, GFP_KERNEL); while (addr < length) { - pdc20621_put_to_dimm(host, (void *) &tmp, addr, - sizeof(u32)); - addr += sizeof(u32); + pdc20621_put_to_dimm(host, buf, addr, + PDC_20621_PAGE_SIZE * 32); + addr += PDC_20621_PAGE_SIZE * 32; } + kfree(buf); VPRINTK("Finish ECC initialization\n"); } return 0; -- 1.6.2.2 -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html