Re: [PATCH] ACPICA: ACPI 6.0: Add support for IORT table.

["Goel, Sameer" <sgoel@codeaurora.org>]

On 2/16/2017 5:59 PM, Stefano Stabellini wrote:
> On Wed, 15 Feb 2017, Sameer Goel wrote:
>> From: Lv Zheng <lv.zheng@intel.com>
>>
>> ACPICA commit 5de82757aef5d6163e37064033aacbce193abbca
>>
>> This patch adds support for IORT (IO Remapping Table) in iasl.
>>
>> Note that some field names are modified to shrink their length or the
>> decompiled IORT ASL will contain fields with ugly ":" alignment.
>>
>> The IORT contains field definitions around "Memory Access Properties". This
>> patch also adds support to encode/decode it using inline table.
>>
>> This patch doesn't add inline table support for the SMMU interrupt fields
>> due to a limitation in current ACPICA data table support. Lv Zheng.
>>
>> Link: https://github.com/acpica/acpica/commit/5de82757
>> Signed-off-by: Lv Zheng <lv.zheng@intel.com>
>> Signed-off-by: Bob Moore <robert.moore@intel.com>
>> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
>> [Linux commit 874f6a723e56d0da9e481629b17482bcd3801ecf]
>> [only port the IORT changes]
>> Signed-off-by: Sameer Goel <sgoel@codeaurora.org>
> 
> if this is a straight port from linux, then please don't make other
> changes on top of it such as:
> 
> 
>> @@ -5,7 +5,7 @@
>>   *****************************************************************************/
>>  
>>  /*
>> - * Copyright (C) 2000 - 2011, Intel Corp.
>> + * Copyright (C) 2000 - 2016, Intel Corp.
>>   * All rights reserved.
>>   *
>>   * Redistribution and use in source and binary forms, with or without
>> @@ -67,7 +67,8 @@
>>  #define ACPI_SIG_DBGP           "DBGP"	/* Debug Port table */
>>  #define ACPI_SIG_DMAR           "DMAR"	/* DMA Remapping table */
>>  #define ACPI_SIG_HPET           "HPET"	/* High Precision Event Timer table */
>> -#define ACPI_SIG_IBFT           "IBFT"	/* i_sCSI Boot Firmware Table */
>> +#define ACPI_SIG_IBFT           "IBFT"	/* iSCSI Boot Firmware Table */
> 
> [...]
> 
>> +enum acpi_iort_node_type {
>> +	ACPI_IORT_NODE_ITS_GROUP = 0x00,
>> +	ACPI_IORT_NODE_NAMED_COMPONENT = 0x01,
>> +	ACPI_IORT_NODE_PCI_ROOT_COMPLEX = 0x02,
>> +	ACPI_IORT_NODE_SMMU = 0x03,
>> +	ACPI_IORT_NODE_SMMU_V3 = 0x04
> 
> SMMU_V3 wasn't present in 874f6a723e56d0da9e481629b17482bcd3801ecf 
> 
> 
>> +struct acpi_iort_smmu_v3 {
>> +	u64 base_address;	/* SMMUv3 base address */
>> +	u32 flags;
>> +	u32 reserved;
>> +	u64 vatos_address;
>> +	u32 model;		/* O: generic SMMUv3 */
>> +	u32 event_gsiv;
>> +	u32 pri_gsiv;
>> +	u32 gerr_gsiv;
>> +	u32 sync_gsiv;
>> +};
>> +
>> +/* Masks for Flags field above */
>> +
>> +#define ACPI_IORT_SMMU_V3_COHACC_OVERRIDE   (1)
>> +#define ACPI_IORT_SMMU_V3_HTTU_OVERRIDE     (1<<1)
> 
> Same here.
> 
> I think you also need 4ac78baf88d85c49883fcc87d31198ebe408e54d
> 

Thanks for the feedback Stefano. I will make the required changes.

Sameer 
-- 
Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project.

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