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Commit 4c38c59a authored by Chaitanya Pratapa's avatar Chaitanya Pratapa Committed by Gerrit - the friendly Code Review server
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msm: ipa: Fix SMEM mapping to AP CB 



When Q6 SMEM memory is mapped to AP CB only partial range is
mapped as a result when IPA tries to access beyond mapped
range it results in an SMMU S1 fault. Make changes to map
the full SMEM region.

Change-Id: I81d5d7b27635a97bb50115ddb3a6b2d56e753c2e
Signed-off-by: default avatarChaitanya Pratapa <cpratapa@codeaurora.org>
parent 8517bb17

drivers/platform/msm/ipa/ipa_v3/ipa.c

+2 −1
Original line number Diff line number Diff line
@@ -6371,6 +6371,7 @@ static int ipa_smmu_ap_cb_probe(struct device *dev) 
		/* map SMEM memory for IPA table accesses */

		smem_addr = smem_alloc(SMEM_IPA_FILTER_TABLE, IPA_SMEM_SIZE,

				SMEM_MODEM, 0);

		q6_smem_size = IPA_SMEM_SIZE;

	} else {

		IPADBG("ipa q6 smem size = %d\n", q6_smem_size);

		smem_addr = smem_alloc(SMEM_IPA_FILTER_TABLE, q6_smem_size,
@@ -6383,7 +6384,7 @@ static int ipa_smmu_ap_cb_probe(struct device *dev) 
		phys_addr_t pa_p;

		u32 size_p;



		IPA_SMMU_ROUND_TO_PAGE(iova, pa, IPA_SMEM_SIZE,

		IPA_SMMU_ROUND_TO_PAGE(iova, pa, q6_smem_size,

			iova_p, pa_p, size_p);

		IPADBG("mapping 0x%lx to 0x%pa size %d\n",

			iova_p, &pa_p, size_p);