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Commit 30e8dd46 authored by Shanker Donthineni's avatar Shanker Donthineni Committed by android-build-merger
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irqchip/gicv3-its: Add workaround for QDF2400 ITS erratum 0065 

am: 095635be

Change-Id: Ie5b9efb5d4cd40e28a7d53769e46ad4abc28d0d2
parents 6b819b51 095635be

Documentation/arm64/silicon-errata.txt

+23 −21
Original line number Diff line number Diff line
@@ -43,7 +43,7 @@ will be updated when new workarounds are committed and backported to 
stable kernels.



| Implementor    | Component       | Erratum ID      | Kconfig                     |

+----------------+-----------------+-----------------+-------------------------+

+----------------+-----------------+-----------------+-----------------------------+

| ARM            | Cortex-A53      | #826319         | ARM64_ERRATUM_826319        |

| ARM            | Cortex-A53      | #827319         | ARM64_ERRATUM_827319        |

| ARM            | Cortex-A53      | #824069         | ARM64_ERRATUM_824069        |
@@ -63,3 +63,5 @@ stable kernels. 
| Cavium         | ThunderX SMMUv2 | #27704          | N/A                         |

|                |                 |                 |                             |

| Freescale/NXP  | LS2080A/LS1043A | A-008585        | FSL_ERRATUM_A008585         |

|                |                 |                 |                             |

| Qualcomm Tech. | QDF2400 ITS     | E0065           | QCOM_QDF2400_ERRATUM_0065   |

arch/arm64/Kconfig

+10 −0
Original line number Diff line number Diff line
@@ -474,6 +474,16 @@ config CAVIUM_ERRATUM_27456 


	  If unsure, say Y.



config QCOM_QDF2400_ERRATUM_0065

	bool "QDF2400 E0065: Incorrect GITS_TYPER.ITT_Entry_size"

	default y

	help

	  On Qualcomm Datacenter Technologies QDF2400 SoC, ITS hardware reports

	  ITE size incorrectly. The GITS_TYPER.ITT_Entry_size field should have

	  been indicated as 16Bytes (0xf), not 8Bytes (0x7).



	  If unsure, say Y.



endmenu

drivers/irqchip/irq-gic-v3-its.c

+16 −0
Original line number Diff line number Diff line
@@ -1598,6 +1598,14 @@ static void __maybe_unused its_enable_quirk_cavium_23144(void *data) 
	its->flags |= ITS_FLAGS_WORKAROUND_CAVIUM_23144;

}



static void __maybe_unused its_enable_quirk_qdf2400_e0065(void *data)

{

	struct its_node *its = data;



	/* On QDF2400, the size of the ITE is 16Bytes */

	its->ite_size = 16;

}



static const struct gic_quirk its_quirks[] = {

#ifdef CONFIG_CAVIUM_ERRATUM_22375

	{
@@ -1614,6 +1622,14 @@ static const struct gic_quirk its_quirks[] = { 
		.mask	= 0xffff0fff,

		.init	= its_enable_quirk_cavium_23144,

	},

#endif

#ifdef CONFIG_QCOM_QDF2400_ERRATUM_0065

	{

		.desc	= "ITS: QDF2400 erratum 0065",

		.iidr	= 0x00001070, /* QDF2400 ITS rev 1.x */

		.mask	= 0xffffffff,

		.init	= its_enable_quirk_qdf2400_e0065,

	},

#endif

	{

	}