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Commit dd5ab8fe authored by Skylar Chang's avatar Skylar Chang Committed by Gerrit - the friendly Code Review server
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msm: ipa3: add mapping for IPA SMEM to SMMU 



IPA modem driver uses shared-mem for IPA tables.
This change adds the needed mapping to AP context bank SMMU.

CRs-Fixed: 1046501
Change-Id: I185aaa38c3365336997a6a158311e67e7ffd26ad
Acked-by: default avatarAdy Abraham <adya@qti.qualcomm.com>
Signed-off-by: default avatarSkylar Chang <chiaweic@codeaurora.org>
parent e7587c62

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

+24 −0
Original line number Diff line number Diff line
@@ -37,6 +37,7 @@ 
#include <linux/hashtable.h>

#include <linux/hash.h>

#include <soc/qcom/subsystem_restart.h>

#include <soc/qcom/smem.h>

#define IPA_SUBSYSTEM_NAME "ipa_fws"

#include "ipa_i.h"

#include "../ipa_rm_i.h"
@@ -74,6 +75,8 @@ 
#define IPA3_ACTIVE_CLIENT_LOG_TYPE_RESOURCE 2

#define IPA3_ACTIVE_CLIENT_LOG_TYPE_SPECIAL 3



#define IPA_SMEM_SIZE (8 * 1024)



/* round addresses for closes page per SMMU requirements */

#define IPA_SMMU_ROUND_TO_PAGE(iova, pa, size, iova_p, pa_p, size_p) \

	do { \
@@ -4960,6 +4963,7 @@ static int ipa_smmu_ap_cb_probe(struct device *dev) 
	u32 iova_ap_mapping[2];

	u32 add_map_size;

	const u32 *add_map;

	void *smem_addr;

	int i;



	IPADBG("AP CB probe: sub pdev=%p\n", dev);
@@ -5079,6 +5083,26 @@ 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);

	if (smem_addr) {

		phys_addr_t iova = smem_virt_to_phys(smem_addr);

		phys_addr_t pa = iova;

		unsigned long iova_p;

		phys_addr_t pa_p;

		u32 size_p;



		IPA_SMMU_ROUND_TO_PAGE(iova, pa, IPA_SMEM_SIZE,

			iova_p, pa_p, size_p);

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

			iova_p, &pa_p, size_p);

		ipa3_iommu_map(cb->mapping->domain,

			iova_p, pa_p, size_p,

			IOMMU_READ | IOMMU_WRITE | IOMMU_DEVICE);

	}





	smmu_info.present = true;



	if (!ipa3_bus_scale_table)