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Commit aab773f8 authored by Skylar Chang's avatar Skylar Chang
Browse files

msm: ipa: flush the desc before feeding 



Flush the completed descriptors every time
before feeding new descriptors to IPA BAM

Change-Id: Ibd7c0ccab0c3b9bd0907e4488b9287b8026fc8c8
Acked-by: default avatarSunil Paidimarri <hisunil@qti.qualcomm.com>
Signed-off-by: default avatarSkylar Chang <chiaweic@codeaurora.org>
parent 13fe987c

drivers/platform/msm/ipa/ipa_v2/ipa_dp.c

+26 −0
Original line number Diff line number Diff line
@@ -294,6 +294,8 @@ int ipa_send_one(struct ipa_sys_context *sys, struct ipa_desc *desc, 
	dma_addr_t dma_address;

	u16 len;

	u32 mem_flag = GFP_ATOMIC;

	struct sps_iovec iov;

	int ret;



	if (unlikely(!in_atomic))

		mem_flag = GFP_KERNEL;
@@ -346,6 +348,17 @@ int ipa_send_one(struct ipa_sys_context *sys, struct ipa_desc *desc, 


	spin_lock_bh(&sys->spinlock);

	list_add_tail(&tx_pkt->link, &sys->head_desc_list);

	if (sys->policy == IPA_POLICY_NOINTR_MODE) {

		do {

			ret = sps_get_iovec(sys->ep->ep_hdl, &iov);

			if (ret) {

				IPADBG("sps_get_iovec failed %d\n", ret);

				break;

			}

			if ((iov.addr == 0x0) && (iov.size == 0x0))

				break;

		} while (1);

	}

	result = sps_transfer_one(sys->ep->ep_hdl, dma_address, len, tx_pkt,

			sps_flags);

	if (result) {
@@ -401,6 +414,8 @@ int ipa_send(struct ipa_sys_context *sys, u32 num_desc, struct ipa_desc *desc, 
	int fail_dma_wrap = 0;

	uint size = num_desc * sizeof(struct sps_iovec);

	u32 mem_flag = GFP_ATOMIC;

	struct sps_iovec iov;

	int ret;



	if (unlikely(!in_atomic))

		mem_flag = GFP_KERNEL;
@@ -511,6 +526,17 @@ int ipa_send(struct ipa_sys_context *sys, u32 num_desc, struct ipa_desc *desc, 
		}

	}



	if (sys->policy == IPA_POLICY_NOINTR_MODE) {

		do {

			ret = sps_get_iovec(sys->ep->ep_hdl, &iov);

			if (ret) {

				IPADBG("sps_get_iovec failed %d\n", ret);

				break;

			}

			if ((iov.addr == 0x0) && (iov.size == 0x0))

				break;

		} while (1);

	}

	result = sps_transfer(sys->ep->ep_hdl, &transfer);

	if (result) {

		IPAERR("sps_transfer failed rc=%d\n", result);