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https://github.com/edk2-porting/linux-next.git
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iop-adma: implement a private tx_list
Drop iop-adma's use of tx_list from struct dma_async_tx_descriptor in preparation for removal of this field. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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@ -86,6 +86,7 @@ struct iop_adma_chan {
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* @idx: pool index
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* @unmap_src_cnt: number of xor sources
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* @unmap_len: transaction bytecount
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* @tx_list: list of descriptors that are associated with one operation
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* @async_tx: support for the async_tx api
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* @group_list: list of slots that make up a multi-descriptor transaction
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* for example transfer lengths larger than the supported hw max
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@ -102,6 +103,7 @@ struct iop_adma_desc_slot {
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u16 idx;
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u16 unmap_src_cnt;
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size_t unmap_len;
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struct list_head tx_list;
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struct dma_async_tx_descriptor async_tx;
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union {
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u32 *xor_check_result;
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@ -370,7 +370,7 @@ retry:
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}
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alloc_tail->group_head = alloc_start;
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alloc_tail->async_tx.cookie = -EBUSY;
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list_splice(&chain, &alloc_tail->async_tx.tx_list);
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list_splice(&chain, &alloc_tail->tx_list);
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iop_chan->last_used = last_used;
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iop_desc_clear_next_desc(alloc_start);
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iop_desc_clear_next_desc(alloc_tail);
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@ -429,7 +429,7 @@ iop_adma_tx_submit(struct dma_async_tx_descriptor *tx)
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old_chain_tail = list_entry(iop_chan->chain.prev,
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struct iop_adma_desc_slot, chain_node);
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list_splice_init(&sw_desc->async_tx.tx_list,
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list_splice_init(&sw_desc->tx_list,
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&old_chain_tail->chain_node);
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/* fix up the hardware chain */
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@ -496,6 +496,7 @@ static int iop_adma_alloc_chan_resources(struct dma_chan *chan)
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dma_async_tx_descriptor_init(&slot->async_tx, chan);
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slot->async_tx.tx_submit = iop_adma_tx_submit;
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INIT_LIST_HEAD(&slot->tx_list);
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INIT_LIST_HEAD(&slot->chain_node);
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INIT_LIST_HEAD(&slot->slot_node);
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hw_desc = (char *) iop_chan->device->dma_desc_pool;
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@ -1296,7 +1297,7 @@ static void iop_chan_start_null_memcpy(struct iop_adma_chan *iop_chan)
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if (sw_desc) {
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grp_start = sw_desc->group_head;
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list_splice_init(&sw_desc->async_tx.tx_list, &iop_chan->chain);
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list_splice_init(&sw_desc->tx_list, &iop_chan->chain);
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async_tx_ack(&sw_desc->async_tx);
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iop_desc_init_memcpy(grp_start, 0);
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iop_desc_set_byte_count(grp_start, iop_chan, 0);
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@ -1352,7 +1353,7 @@ static void iop_chan_start_null_xor(struct iop_adma_chan *iop_chan)
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sw_desc = iop_adma_alloc_slots(iop_chan, slot_cnt, slots_per_op);
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if (sw_desc) {
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grp_start = sw_desc->group_head;
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list_splice_init(&sw_desc->async_tx.tx_list, &iop_chan->chain);
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list_splice_init(&sw_desc->tx_list, &iop_chan->chain);
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async_tx_ack(&sw_desc->async_tx);
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iop_desc_init_null_xor(grp_start, 2, 0);
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iop_desc_set_byte_count(grp_start, iop_chan, 0);
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