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authorVinod Koul <vkoul@kernel.org>2020-08-05 16:32:07 +0300
committerVinod Koul <vkoul@kernel.org>2020-08-05 16:32:07 +0300
commit0b5ad7b9522e6172342511fac6114fd8b7eb622a (patch)
treeb6a29560e6364bd98634564181cab54a3b6164a4 /include/linux/dmaengine.h
parent87730ccbddcb48478b1b88e88b14e73424130764 (diff)
parent6bd0dffa1a6e19e73964ae47c964f57c625cce05 (diff)
downloadlinux-0b5ad7b9522e6172342511fac6114fd8b7eb622a.tar.xz
Merge branch 'for-linus' into fixes
Signed-off-by: Vinod Koul <vkoul@kernel.org> Conflicts: drivers/dma/idxd/sysfs.c
Diffstat (limited to 'include/linux/dmaengine.h')
-rw-r--r--include/linux/dmaengine.h20
1 files changed, 19 insertions, 1 deletions
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index e1c03339918f..d718671bfd25 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -39,6 +39,7 @@ enum dma_status {
DMA_IN_PROGRESS,
DMA_PAUSED,
DMA_ERROR,
+ DMA_OUT_OF_ORDER,
};
/**
@@ -61,6 +62,7 @@ enum dma_transaction_type {
DMA_SLAVE,
DMA_CYCLIC,
DMA_INTERLEAVE,
+ DMA_COMPLETION_NO_ORDER,
/* last transaction type for creation of the capabilities mask */
DMA_TX_TYPE_END,
};
@@ -162,7 +164,7 @@ struct dma_interleaved_template {
* @DMA_PREP_INTERRUPT - trigger an interrupt (callback) upon completion of
* this transaction
* @DMA_CTRL_ACK - if clear, the descriptor cannot be reused until the client
- * acknowledges receipt, i.e. has has a chance to establish any dependency
+ * acknowledges receipt, i.e. has a chance to establish any dependency
* chains
* @DMA_PREP_PQ_DISABLE_P - prevent generation of P while generating Q
* @DMA_PREP_PQ_DISABLE_Q - prevent generation of Q while generating P
@@ -465,7 +467,11 @@ enum dma_residue_granularity {
* Since the enum dma_transfer_direction is not defined as bit flag for
* each type, the dma controller should set BIT(<TYPE>) and same
* should be checked by controller as well
+ * @min_burst: min burst capability per-transfer
* @max_burst: max burst capability per-transfer
+ * @max_sg_burst: max number of SG list entries executed in a single burst
+ * DMA tansaction with no software intervention for reinitialization.
+ * Zero value means unlimited number of entries.
* @cmd_pause: true, if pause is supported (i.e. for reading residue or
* for resume later)
* @cmd_resume: true, if resume is supported
@@ -478,7 +484,9 @@ struct dma_slave_caps {
u32 src_addr_widths;
u32 dst_addr_widths;
u32 directions;
+ u32 min_burst;
u32 max_burst;
+ u32 max_sg_burst;
bool cmd_pause;
bool cmd_resume;
bool cmd_terminate;
@@ -769,7 +777,11 @@ struct dma_filter {
* Since the enum dma_transfer_direction is not defined as bit flag for
* each type, the dma controller should set BIT(<TYPE>) and same
* should be checked by controller as well
+ * @min_burst: min burst capability per-transfer
* @max_burst: max burst capability per-transfer
+ * @max_sg_burst: max number of SG list entries executed in a single burst
+ * DMA tansaction with no software intervention for reinitialization.
+ * Zero value means unlimited number of entries.
* @residue_granularity: granularity of the transfer residue reported
* by tx_status
* @device_alloc_chan_resources: allocate resources and return the
@@ -789,6 +801,8 @@ struct dma_filter {
* be called after period_len bytes have been transferred.
* @device_prep_interleaved_dma: Transfer expression in a generic way.
* @device_prep_dma_imm_data: DMA's 8 byte immediate data to the dst address
+ * @device_caps: May be used to override the generic DMA slave capabilities
+ * with per-channel specific ones
* @device_config: Pushes a new configuration to a channel, return 0 or an error
* code
* @device_pause: Pauses any transfer happening on a channel. Returns
@@ -839,7 +853,9 @@ struct dma_device {
u32 src_addr_widths;
u32 dst_addr_widths;
u32 directions;
+ u32 min_burst;
u32 max_burst;
+ u32 max_sg_burst;
bool descriptor_reuse;
enum dma_residue_granularity residue_granularity;
@@ -887,6 +903,8 @@ struct dma_device {
struct dma_chan *chan, dma_addr_t dst, u64 data,
unsigned long flags);
+ void (*device_caps)(struct dma_chan *chan,
+ struct dma_slave_caps *caps);
int (*device_config)(struct dma_chan *chan,
struct dma_slave_config *config);
int (*device_pause)(struct dma_chan *chan);