From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755865Ab0KMDat (ORCPT ); Fri, 12 Nov 2010 22:30:49 -0500 Received: from wolverine01.qualcomm.com ([199.106.114.254]:28676 "EHLO wolverine01.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754027Ab0KMDaO (ORCPT ); Fri, 12 Nov 2010 22:30:14 -0500 X-IronPort-AV: E=McAfee;i="5400,1158,6165"; a="61810881" From: Stepan Moskovchenko To: dwalker@codeaurora.org Cc: davidb@codeaurora.org, bryanh@codeaurora.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Stepan Moskovchenko Subject: [PATCH 12/14] msm: iommu: Definitions for extended memory attributes Date: Fri, 12 Nov 2010 19:29:58 -0800 Message-Id: <1289619000-13167-13-git-send-email-stepanm@codeaurora.org> X-Mailer: git-send-email 1.7.0.2 In-Reply-To: <1289619000-13167-1-git-send-email-stepanm@codeaurora.org> References: <1289619000-13167-1-git-send-email-stepanm@codeaurora.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add the register field definitions and memory attribute definitions that will be needed to support IOMMU transactions with cache-coherent memory access. Signed-off-by: Stepan Moskovchenko --- arch/arm/mach-msm/include/mach/iommu.h | 11 +++++++++++ arch/arm/mach-msm/include/mach/iommu_hw-8xxx.h | 22 +++++++++++++++++++++- 2 files changed, 32 insertions(+), 1 deletions(-) diff --git a/arch/arm/mach-msm/include/mach/iommu.h b/arch/arm/mach-msm/include/mach/iommu.h index 17fc79f..bfc80c8 100644 --- a/arch/arm/mach-msm/include/mach/iommu.h +++ b/arch/arm/mach-msm/include/mach/iommu.h @@ -20,6 +20,17 @@ #include +/* Sharability attributes of MSM IOMMU mappings */ +#define MSM_IOMMU_ATTR_NON_SH 0x0 +#define MSM_IOMMU_ATTR_SH 0x4 + +/* Cacheability attributes of MSM IOMMU mappings */ +#define MSM_IOMMU_ATTR_NONCACHED 0x0 +#define MSM_IOMMU_ATTR_CACHED_WB_WA 0x1 +#define MSM_IOMMU_ATTR_CACHED_WB_NWA 0x2 +#define MSM_IOMMU_ATTR_CACHED_WT 0x3 + + /* Maximum number of Machine IDs that we are allowing to be mapped to the same * context bank. The number of MIDs mapped to the same CB does not affect * performance, but there is a practical limit on how many distinct MIDs may diff --git a/arch/arm/mach-msm/include/mach/iommu_hw-8xxx.h b/arch/arm/mach-msm/include/mach/iommu_hw-8xxx.h index f9386d3..c2c3da9 100644 --- a/arch/arm/mach-msm/include/mach/iommu_hw-8xxx.h +++ b/arch/arm/mach-msm/include/mach/iommu_hw-8xxx.h @@ -54,6 +54,7 @@ do { \ #define NUM_FL_PTE 4096 #define NUM_SL_PTE 256 +#define NUM_TEX_CLASS 8 /* First-level page table bits */ #define FL_BASE_MASK 0xFFFFFC00 @@ -63,6 +64,9 @@ do { \ #define FL_AP_WRITE (1 << 10) #define FL_AP_READ (1 << 11) #define FL_SHARED (1 << 16) +#define FL_BUFFERABLE (1 << 2) +#define FL_CACHEABLE (1 << 3) +#define FL_TEX0 (1 << 12) #define FL_OFFSET(va) (((va) & 0xFFF00000) >> 20) /* Second-level page table bits */ @@ -73,8 +77,20 @@ do { \ #define SL_AP0 (1 << 4) #define SL_AP1 (2 << 4) #define SL_SHARED (1 << 10) +#define SL_BUFFERABLE (1 << 2) +#define SL_CACHEABLE (1 << 3) +#define SL_TEX0 (1 << 6) #define SL_OFFSET(va) (((va) & 0xFF000) >> 12) +/* Memory type and cache policy attributes */ +#define MT_SO 0 +#define MT_DEV 1 +#define MT_NORMAL 2 +#define CP_NONCACHED 0 +#define CP_WB_WA 1 +#define CP_WT 2 +#define CP_WB_NWA 3 + /* Global register setters / getters */ #define SET_M2VCBR_N(b, N, v) SET_GLOBAL_REG_N(M2VCBR_N, N, (b), (v)) #define SET_CBACR_N(b, N, v) SET_GLOBAL_REG_N(CBACR_N, N, (b), (v)) @@ -706,7 +722,9 @@ do { \ #define GET_OCPC5(b, c) GET_CONTEXT_FIELD(b, c, NMRR, OCPC5) #define GET_OCPC6(b, c) GET_CONTEXT_FIELD(b, c, NMRR, OCPC6) #define GET_OCPC7(b, c) GET_CONTEXT_FIELD(b, c, NMRR, OCPC7) - +#define NMRR_ICP(nmrr, n) (((nmrr) & (3 << ((n) * 2))) >> ((n) * 2)) +#define NMRR_OCP(nmrr, n) (((nmrr) & (3 << ((n) * 2 + 16))) >> \ + ((n) * 2 + 16)) /* PAR */ #define GET_FAULT(b, c) GET_CONTEXT_FIELD(b, c, PAR, FAULT) @@ -750,6 +768,8 @@ do { \ #define GET_NOS5(b, c) GET_CONTEXT_FIELD(b, c, PRRR, NOS5) #define GET_NOS6(b, c) GET_CONTEXT_FIELD(b, c, PRRR, NOS6) #define GET_NOS7(b, c) GET_CONTEXT_FIELD(b, c, PRRR, NOS7) +#define PRRR_NOS(prrr, n) ((prrr) & (1 << ((n) + 24)) ? 1 : 0) +#define PRRR_MT(prrr, n) ((((prrr) & (3 << ((n) * 2))) >> ((n) * 2))) /* RESUME */ -- 1.7.0.2 Sent by an employee of the Qualcomm Innovation Center, Inc. The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.