From: "Niklas Söderlund" <niklas.soderlund+renesas@ragnatech.se>
To: linux-renesas-soc@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org,
iommu@lists.linux-foundation.org
Cc: robin.murphy@arm.com, vinod.koul@intel.com,
laurent.pinchart@ideasonboard.com, geert+renesas@glider.be,
linus.walleij@linaro.org, dan.j.williams@intel.com,
arnd@arndb.de, linux-arch@vger.kernel.org,
"Niklas Söderlund" <niklas.soderlund+renesas@ragnatech.se>
Subject: [PATCH v3 5/8] dmaengine: rcar-dmac: group slave configuration
Date: Wed, 10 Feb 2016 01:57:55 +0100 [thread overview]
Message-ID: <1455065878-11906-6-git-send-email-niklas.soderlund+renesas@ragnatech.se> (raw)
In-Reply-To: <1455065878-11906-1-git-send-email-niklas.soderlund+renesas@ragnatech.se>
Group slave address and transfer size in own structs for source and
destination. This is in preparation for hooking up the dma-mapping API
to the slave addresses.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
---
drivers/dma/sh/rcar-dmac.c | 37 +++++++++++++++++++++----------------
1 file changed, 21 insertions(+), 16 deletions(-)
diff --git a/drivers/dma/sh/rcar-dmac.c b/drivers/dma/sh/rcar-dmac.c
index 7820d07..743873c 100644
--- a/drivers/dma/sh/rcar-dmac.c
+++ b/drivers/dma/sh/rcar-dmac.c
@@ -118,14 +118,21 @@ struct rcar_dmac_desc_page {
sizeof(struct rcar_dmac_xfer_chunk))
/*
+ * @slave_addr: slave memory address
+ * @xfer_size: size (in bytes) of hardware transfers
+ */
+struct rcar_dmac_chan_slave {
+ dma_addr_t slave_addr;
+ unsigned int xfer_size;
+};
+
+/*
* struct rcar_dmac_chan - R-Car Gen2 DMA Controller Channel
* @chan: base DMA channel object
* @iomem: channel I/O memory base
* @index: index of this channel in the controller
- * @src_xfer_size: size (in bytes) of hardware transfers on the source side
- * @dst_xfer_size: size (in bytes) of hardware transfers on the destination side
- * @src_slave_addr: slave source memory address
- * @dst_slave_addr: slave destination memory address
+ * @src: slave memory address and size on the source side
+ * @dst: slave memory address and size on the destination side
* @mid_rid: hardware MID/RID for the DMA client using this channel
* @lock: protects the channel CHCR register and the desc members
* @desc.free: list of free descriptors
@@ -142,10 +149,8 @@ struct rcar_dmac_chan {
void __iomem *iomem;
unsigned int index;
- unsigned int src_xfer_size;
- unsigned int dst_xfer_size;
- dma_addr_t src_slave_addr;
- dma_addr_t dst_slave_addr;
+ struct rcar_dmac_chan_slave src;
+ struct rcar_dmac_chan_slave dst;
int mid_rid;
spinlock_t lock;
@@ -793,13 +798,13 @@ static void rcar_dmac_chan_configure_desc(struct rcar_dmac_chan *chan,
case DMA_DEV_TO_MEM:
chcr = RCAR_DMACHCR_DM_INC | RCAR_DMACHCR_SM_FIXED
| RCAR_DMACHCR_RS_DMARS;
- xfer_size = chan->src_xfer_size;
+ xfer_size = chan->src.xfer_size;
break;
case DMA_MEM_TO_DEV:
chcr = RCAR_DMACHCR_DM_FIXED | RCAR_DMACHCR_SM_INC
| RCAR_DMACHCR_RS_DMARS;
- xfer_size = chan->dst_xfer_size;
+ xfer_size = chan->dst.xfer_size;
break;
case DMA_MEM_TO_MEM:
@@ -1038,7 +1043,7 @@ rcar_dmac_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
}
dev_addr = dir == DMA_DEV_TO_MEM
- ? rchan->src_slave_addr : rchan->dst_slave_addr;
+ ? rchan->src.slave_addr : rchan->dst.slave_addr;
return rcar_dmac_chan_prep_sg(rchan, sgl, sg_len, dev_addr,
dir, flags, false);
}
@@ -1093,7 +1098,7 @@ rcar_dmac_prep_dma_cyclic(struct dma_chan *chan, dma_addr_t buf_addr,
}
dev_addr = dir == DMA_DEV_TO_MEM
- ? rchan->src_slave_addr : rchan->dst_slave_addr;
+ ? rchan->src.slave_addr : rchan->dst.slave_addr;
desc = rcar_dmac_chan_prep_sg(rchan, sgl, sg_len, dev_addr,
dir, flags, true);
@@ -1110,10 +1115,10 @@ static int rcar_dmac_device_config(struct dma_chan *chan,
* We could lock this, but you shouldn't be configuring the
* channel, while using it...
*/
- rchan->src_slave_addr = cfg->src_addr;
- rchan->dst_slave_addr = cfg->dst_addr;
- rchan->src_xfer_size = cfg->src_addr_width;
- rchan->dst_xfer_size = cfg->dst_addr_width;
+ rchan->src.slave_addr = cfg->src_addr;
+ rchan->dst.slave_addr = cfg->dst_addr;
+ rchan->src.xfer_size = cfg->src_addr_width;
+ rchan->dst.xfer_size = cfg->dst_addr_width;
return 0;
}
--
2.7.1
next prev parent reply other threads:[~2016-02-10 0:57 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-10 0:57 [PATCH v3 0/8] dmaengine: rcar-dmac: add iommu support for slave transfers Niklas Söderlund
2016-02-10 0:57 ` Niklas Söderlund
2016-02-10 0:57 ` [PATCH v3 1/8] iommu: Add MMIO mapping type Niklas Söderlund
2016-02-10 0:57 ` Niklas Söderlund
[not found] ` <1455065878-11906-2-git-send-email-niklas.soderlund+renesas-1zkq55x86MTxsAP9Fp7wbw@public.gmane.org>
2016-02-11 0:02 ` Laurent Pinchart
2016-02-11 0:02 ` Laurent Pinchart
2016-02-11 15:57 ` Robin Murphy
[not found] ` <56BCAF66.8010206-5wv7dgnIgG8@public.gmane.org>
2016-02-16 12:06 ` Niklas Söderlund
2016-02-16 12:06 ` Niklas Söderlund
2016-02-16 12:43 ` Robin Murphy
2016-02-16 12:43 ` Robin Murphy
2016-02-16 13:30 ` Niklas Söderlund
2016-02-16 13:30 ` Niklas Söderlund
2016-02-10 0:57 ` [PATCH v3 2/8] dma-mapping: add {map,unmap}_resource to dma_map_ops Niklas Söderlund
2016-02-10 0:57 ` Niklas Söderlund
2016-02-10 12:11 ` Sergei Shtylyov
2016-02-10 12:11 ` Sergei Shtylyov
2016-02-11 0:03 ` Laurent Pinchart
2016-02-11 0:03 ` Laurent Pinchart
2016-02-10 0:57 ` [PATCH v3 3/8] dma-mapping: add dma_{map,unmap}_resource Niklas Söderlund
2016-02-10 0:57 ` Niklas Söderlund
[not found] ` <1455065878-11906-4-git-send-email-niklas.soderlund+renesas-1zkq55x86MTxsAP9Fp7wbw@public.gmane.org>
2016-02-10 10:25 ` Robin Murphy
2016-02-10 10:25 ` Robin Murphy
2016-02-10 0:57 ` [PATCH v3 4/8] arm: dma-mapping: add {map,unmap}_resource for iommu ops Niklas Söderlund
2016-02-10 0:57 ` Niklas Söderlund
2016-02-11 0:12 ` Laurent Pinchart
2016-02-11 0:12 ` Laurent Pinchart
2016-02-10 0:57 ` Niklas Söderlund [this message]
2016-02-10 0:57 ` [PATCH v3 5/8] dmaengine: rcar-dmac: group slave configuration Niklas Söderlund
2016-02-11 0:14 ` Laurent Pinchart
2016-02-11 0:14 ` Laurent Pinchart
2016-02-10 0:57 ` [PATCH v3 6/8] dmaengine: rcar-dmac: add iommu support for slave transfers Niklas Söderlund
2016-02-10 0:57 ` Niklas Söderlund
[not found] ` <1455065878-11906-7-git-send-email-niklas.soderlund+renesas-1zkq55x86MTxsAP9Fp7wbw@public.gmane.org>
2016-02-10 10:49 ` Robin Murphy
2016-02-10 10:49 ` Robin Murphy
2016-02-11 0:33 ` Laurent Pinchart
2016-02-11 0:33 ` Laurent Pinchart
2016-02-10 0:57 ` [PATCH v3 7/8] ARM: dts: r8a7790: add iommus to dmac0 and dmac1 Niklas Söderlund
2016-02-10 0:57 ` Niklas Söderlund
2016-02-10 17:55 ` Simon Horman
2016-02-11 0:50 ` Niklas Söderlund
2016-02-11 0:41 ` Laurent Pinchart
2016-02-10 0:57 ` [PATCH v3 8/8] ARM: dts: r8a7791: " Niklas Söderlund
2016-02-10 0:57 ` Niklas Söderlund
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