Commit 8bfbeed5 authored by Sergei Shtylyov's avatar Sergei Shtylyov Committed by Tejun Heo
Browse files

sata_rcar: correct 'sata_rcar_sht'

Using ATA_BMDMA_SHT() to intialize 'sata_rcar_sht' was suboptimal as
the R-Car descriptor table transfer counter is 28 bits wide (bit 1 to
bit 28), so that the 'dma_boundary' field of 0xFFFF is just too small,
as well as the 'sg_tablesize' field of 128.  Use ATA_BASE_SHT() to
initialize 'sata_rcar_sht' instead and give proper values to the
'dma_boundary' and 'sg_tablesize' fields explicitly.
Signed-off-by: default avatarSergei Shtylyov <>
Signed-off-by: default avatarTejun Heo <>
parent 333279c8
......@@ -121,6 +121,8 @@
/* Descriptor table word 0 bit (when DTA32M = 1) */
struct sata_rcar_priv {
void __iomem *base;
struct clk *clk;
......@@ -575,7 +577,14 @@ static u8 sata_rcar_bmdma_status(struct ata_port *ap)
static struct scsi_host_template sata_rcar_sht = {
* This controller allows transfer chunks up to 512MB which cross 64KB
* boundaries, therefore the DMA limits are more relaxed than standard
.sg_tablesize = ATA_MAX_PRD,
.dma_boundary = SATA_RCAR_DMA_BOUNDARY,
static struct ata_port_operations sata_rcar_port_ops = {
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment