Commit 5e1cb1cb authored by Peter Ujfalusi's avatar Peter Ujfalusi Committed by Vinod Koul
Browse files

dmaengine: ti: k3-udma: Wait for peer teardown completion if supported 



Set the TDTYPE if it is supported on the platform (j721e) which will cause
UDMAP to wait for the remote peer to finish the teardown before returning
the teardown completed message.

Signed-off-by: default avatarPeter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: default avatarKeerthy <j-keerthy@ti.com>
Reviewed-by: default avatarGrygorii Strashko <grygorii.strashko@ti.com>
Link: https://lore.kernel.org/r/20201208090440.31792-3-peter.ujfalusi@ti.com


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent e2de925b

drivers/dma/ti/k3-udma.c

+10 −2
Original line number Diff line number Diff line
@@ -86,6 +86,7 @@ struct udma_rchan { 


#define UDMA_FLAG_PDMA_ACC32		BIT(0)

#define UDMA_FLAG_PDMA_BURST		BIT(1)

#define UDMA_FLAG_TDTYPE		BIT(2)



struct udma_match_data {

	u32 psil_base;
@@ -1589,6 +1590,13 @@ static int udma_tisci_tx_channel_config(struct udma_chan *uc) 
	req_tx.tx_fetch_size = fetch_size >> 2;

	req_tx.txcq_qnum = tc_ring;

	req_tx.tx_atype = uc->config.atype;

	if (uc->config.ep_type == PSIL_EP_PDMA_XY &&

	    ud->match_data->flags & UDMA_FLAG_TDTYPE) {

		/* wait for peer to complete the teardown for PDMAs */

		req_tx.valid_params |=

				TI_SCI_MSG_VALUE_RM_UDMAP_CH_TX_TDTYPE_VALID;

		req_tx.tx_tdtype = 1;

	}



	ret = tisci_ops->tx_ch_cfg(tisci_rm->tisci, &req_tx);

	if (ret)
@@ -3105,14 +3113,14 @@ static struct udma_match_data am654_mcu_data = { 
static struct udma_match_data j721e_main_data = {

	.psil_base = 0x1000,

	.enable_memcpy_support = true,

	.flags = UDMA_FLAG_PDMA_ACC32 | UDMA_FLAG_PDMA_BURST,

	.flags = UDMA_FLAG_PDMA_ACC32 | UDMA_FLAG_PDMA_BURST | UDMA_FLAG_TDTYPE,

	.statictr_z_mask = GENMASK(23, 0),

};



static struct udma_match_data j721e_mcu_data = {

	.psil_base = 0x6000,

	.enable_memcpy_support = false, /* MEM_TO_MEM is slow via MCU UDMA */

	.flags = UDMA_FLAG_PDMA_ACC32 | UDMA_FLAG_PDMA_BURST,

	.flags = UDMA_FLAG_PDMA_ACC32 | UDMA_FLAG_PDMA_BURST | UDMA_FLAG_TDTYPE,

	.statictr_z_mask = GENMASK(23, 0),

};

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