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authorVinod Koul <vinod.koul@intel.com>2016-01-06 12:48:11 +0300
committerVinod Koul <vinod.koul@intel.com>2016-01-06 12:48:11 +0300
commite3c373616a6ac4e18548b224f703f8d4c79a0c46 (patch)
tree7633a93308f35a60ac1ef3508ff5af54e0e5b452 /drivers/dma
parent9fd5ca5f04e4c735f66badb2e65aef30e8672247 (diff)
parent2bb129ebb23d2dfec3cd9c22dc7defd681cfcd58 (diff)
downloadlinux-e3c373616a6ac4e18548b224f703f8d4c79a0c46.tar.xz
Merge branch 'topic/ioatdma' into for-linus
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/ioat/dca.c2
-rw-r--r--drivers/dma/ioat/dma.h34
-rw-r--r--drivers/dma/ioat/registers.h16
3 files changed, 5 insertions, 47 deletions
diff --git a/drivers/dma/ioat/dca.c b/drivers/dma/ioat/dca.c
index 2cb7c308d5c7..0b9b6b07db9e 100644
--- a/drivers/dma/ioat/dca.c
+++ b/drivers/dma/ioat/dca.c
@@ -224,7 +224,7 @@ static u8 ioat_dca_get_tag(struct dca_provider *dca,
return tag;
}
-static struct dca_ops ioat_dca_ops = {
+static const struct dca_ops ioat_dca_ops = {
.add_requester = ioat_dca_add_requester,
.remove_requester = ioat_dca_remove_requester,
.get_tag = ioat_dca_get_tag,
diff --git a/drivers/dma/ioat/dma.h b/drivers/dma/ioat/dma.h
index 8f4e607d5817..b8f48074789f 100644
--- a/drivers/dma/ioat/dma.h
+++ b/drivers/dma/ioat/dma.h
@@ -235,43 +235,11 @@ ioat_chan_by_index(struct ioatdma_device *ioat_dma, int index)
return ioat_dma->idx[index];
}
-static inline u64 ioat_chansts_32(struct ioatdma_chan *ioat_chan)
-{
- u8 ver = ioat_chan->ioat_dma->version;
- u64 status;
- u32 status_lo;
-
- /* We need to read the low address first as this causes the
- * chipset to latch the upper bits for the subsequent read
- */
- status_lo = readl(ioat_chan->reg_base + IOAT_CHANSTS_OFFSET_LOW(ver));
- status = readl(ioat_chan->reg_base + IOAT_CHANSTS_OFFSET_HIGH(ver));
- status <<= 32;
- status |= status_lo;
-
- return status;
-}
-
-#if BITS_PER_LONG == 64
-
static inline u64 ioat_chansts(struct ioatdma_chan *ioat_chan)
{
- u8 ver = ioat_chan->ioat_dma->version;
- u64 status;
-
- /* With IOAT v3.3 the status register is 64bit. */
- if (ver >= IOAT_VER_3_3)
- status = readq(ioat_chan->reg_base + IOAT_CHANSTS_OFFSET(ver));
- else
- status = ioat_chansts_32(ioat_chan);
-
- return status;
+ return readq(ioat_chan->reg_base + IOAT_CHANSTS_OFFSET);
}
-#else
-#define ioat_chansts ioat_chansts_32
-#endif
-
static inline u64 ioat_chansts_to_addr(u64 status)
{
return status & IOAT_CHANSTS_COMPLETED_DESCRIPTOR_ADDR;
diff --git a/drivers/dma/ioat/registers.h b/drivers/dma/ioat/registers.h
index 909352f74c89..4994a3623aee 100644
--- a/drivers/dma/ioat/registers.h
+++ b/drivers/dma/ioat/registers.h
@@ -99,19 +99,9 @@
#define IOAT_DMA_COMP_V1 0x0001 /* Compatibility with DMA version 1 */
#define IOAT_DMA_COMP_V2 0x0002 /* Compatibility with DMA version 2 */
-
-#define IOAT1_CHANSTS_OFFSET 0x04 /* 64-bit Channel Status Register */
-#define IOAT2_CHANSTS_OFFSET 0x08 /* 64-bit Channel Status Register */
-#define IOAT_CHANSTS_OFFSET(ver) ((ver) < IOAT_VER_2_0 \
- ? IOAT1_CHANSTS_OFFSET : IOAT2_CHANSTS_OFFSET)
-#define IOAT1_CHANSTS_OFFSET_LOW 0x04
-#define IOAT2_CHANSTS_OFFSET_LOW 0x08
-#define IOAT_CHANSTS_OFFSET_LOW(ver) ((ver) < IOAT_VER_2_0 \
- ? IOAT1_CHANSTS_OFFSET_LOW : IOAT2_CHANSTS_OFFSET_LOW)
-#define IOAT1_CHANSTS_OFFSET_HIGH 0x08
-#define IOAT2_CHANSTS_OFFSET_HIGH 0x0C
-#define IOAT_CHANSTS_OFFSET_HIGH(ver) ((ver) < IOAT_VER_2_0 \
- ? IOAT1_CHANSTS_OFFSET_HIGH : IOAT2_CHANSTS_OFFSET_HIGH)
+/* IOAT1 define left for i7300_idle driver to not fail compiling */
+#define IOAT1_CHANSTS_OFFSET 0x04
+#define IOAT_CHANSTS_OFFSET 0x08 /* 64-bit Channel Status Register */
#define IOAT_CHANSTS_COMPLETED_DESCRIPTOR_ADDR (~0x3fULL)
#define IOAT_CHANSTS_SOFT_ERR 0x10ULL
#define IOAT_CHANSTS_UNAFFILIATED_ERR 0x8ULL