Commit 3bced619 authored by Zhang Zekun's avatar Zhang Zekun
Browse files

iommu/arm-smmu-v3: Change the style to identify the the hisi_platform 

hulk inclusion
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/IACKUP



----------------------------------------------

The code is isolated by CONFIG_ARCH_HISI which could also be opened
in other platforms . Change the style to identify the hisi platform
to minimize the code influence scope.

Fixes: 46f0c579 ("iommu/arm-smmu-v3: Enable iotlb_sync_map according to SMMU_IIDR")
Signed-off-by: default avatarZhang Zekun <zhangzekun11@huawei.com>
parent 9bb2f255

drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c

+25 −8
Original line number Diff line number Diff line
@@ -129,6 +129,7 @@ struct arm_smmu_ctx_desc quiet_cd = { 0 }; 
static struct arm_smmu_option_prop arm_smmu_options[] = {

	{ ARM_SMMU_OPT_SKIP_PREFETCH, "hisilicon,broken-prefetch-cmd" },

	{ ARM_SMMU_OPT_PAGE0_REGS_ONLY, "cavium,cn9900-broken-page1-regspace"},

	{ ARM_SMMU_OPT_SYNC_MAP, "hisilicon,broken-prefetch-pgtbl"},

	{ 0, NULL},

};
@@ -4948,14 +4949,9 @@ static void hisi_smmu_check_errata(struct arm_smmu_device *smmu) 
{

	u32 reg, i;



	/* IIDR */

	reg = readl_relaxed(smmu->base + ARM_SMMU_IIDR);

	if (!(FIELD_GET(IIDR_VARIANT, reg) == 0x3) ||

	    !(FIELD_GET(IIDR_REVISON, reg) == 0x2))

	if (!(smmu->options & ARM_SMMU_OPT_SYNC_MAP))

		return;



	smmu->options |= ARM_SMMU_OPT_SYNC_MAP;



	reg = readl_relaxed(smmu->base + ARM_SMMU_USER_CFG1);

	reg = reg & GENMASK(15, 0);

	for (i = 0; i < 8; i++) {
@@ -4981,6 +4977,8 @@ static void hisi_smmu_check_errata(struct arm_smmu_device *smmu) 
	}

	smmu->options |= ARM_SMMU_OPT_SYNC_BATCH;

}

#else

static void hisi_smmu_check_errata(struct arm_smmu_device *smmu) {}

#endif



static int arm_smmu_device_hw_probe(struct arm_smmu_device *smmu)
@@ -5213,9 +5211,7 @@ static int arm_smmu_device_hw_probe(struct arm_smmu_device *smmu) 
		smmu->oas = 48;

	}



#ifdef CONFIG_HISILICON_ERRATUM_162100602

	hisi_smmu_check_errata(smmu);

#endif



	if (arm_smmu_ops.pgsize_bitmap == -1UL)

		arm_smmu_ops.pgsize_bitmap = smmu->pgsize_bitmap;
@@ -5248,6 +5244,25 @@ static int arm_smmu_device_hw_probe(struct arm_smmu_device *smmu) 
}



#ifdef CONFIG_ACPI

static struct acpi_platform_list arm_smmu_v3_plat_info[] __initdata = {

	/* HiSilicon Hip09 Platform */

	{"HISI  ", "HIP09   ", 0, ACPI_SIG_IORT, greater_than_or_equal,

	 "Erratum #162100602", 0},

	{"HISI  ", "HIP10   ", 0, ACPI_SIG_IORT, greater_than_or_equal,

	 "Erratum #162100602", 0},

	{"HISI  ", "HIP11   ", 0, ACPI_SIG_IORT, greater_than_or_equal,

	 "Erratum #162100602", 0},

	{ }

};



static void acpi_get_hisi_options(struct arm_smmu_device *smmu)

{

	if (acpi_match_platform_list(arm_smmu_v3_plat_info) < 0)

		return;



	smmu->options |= ARM_SMMU_OPT_SYNC_MAP;

}



static void acpi_smmu_get_options(u32 model, struct arm_smmu_device *smmu)

{

	switch (model) {
@@ -5259,6 +5274,8 @@ static void acpi_smmu_get_options(u32 model, struct arm_smmu_device *smmu) 
		break;

	}



	acpi_get_hisi_options(smmu);



	dev_notice(smmu->dev, "option mask 0x%x\n", smmu->options);

}