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Diffstat (limited to 'arch/arm/mach-msm/include/mach/iommu.h')
| -rw-r--r-- | arch/arm/mach-msm/include/mach/iommu.h | 120 |
1 files changed, 0 insertions, 120 deletions
diff --git a/arch/arm/mach-msm/include/mach/iommu.h b/arch/arm/mach-msm/include/mach/iommu.h deleted file mode 100644 index 5c7c955e6d2..00000000000 --- a/arch/arm/mach-msm/include/mach/iommu.h +++ /dev/null @@ -1,120 +0,0 @@ -/* Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 and - * only version 2 as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA. - */ - -#ifndef MSM_IOMMU_H -#define MSM_IOMMU_H - -#include <linux/interrupt.h> -#include <linux/clk.h> - -/* 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 - -/* Mask for the cache policy attribute */ -#define MSM_IOMMU_CP_MASK 0x03 - -/* 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 - * be present. These mappings are typically determined at design time and are - * not expected to change at run time. - */ -#define MAX_NUM_MIDS 32 - -/** - * struct msm_iommu_dev - a single IOMMU hardware instance - * name Human-readable name given to this IOMMU HW instance - * ncb Number of context banks present on this IOMMU HW instance - */ -struct msm_iommu_dev { - const char *name; - int ncb; -}; - -/** - * struct msm_iommu_ctx_dev - an IOMMU context bank instance - * name Human-readable name given to this context bank - * num Index of this context bank within the hardware - * mids List of Machine IDs that are to be mapped into this context - * bank, terminated by -1. The MID is a set of signals on the - * AXI bus that identifies the function associated with a specific - * memory request. (See ARM spec). - */ -struct msm_iommu_ctx_dev { - const char *name; - int num; - int mids[MAX_NUM_MIDS]; -}; - - -/** - * struct msm_iommu_drvdata - A single IOMMU hardware instance - * @base: IOMMU config port base address (VA) - * @ncb The number of contexts on this IOMMU - * @irq: Interrupt number - * @clk: The bus clock for this IOMMU hardware instance - * @pclk: The clock for the IOMMU bus interconnect - * - * A msm_iommu_drvdata holds the global driver data about a single piece - * of an IOMMU hardware instance. - */ -struct msm_iommu_drvdata { - void __iomem *base; - int irq; - int ncb; - struct clk *clk; - struct clk *pclk; -}; - -/** - * struct msm_iommu_ctx_drvdata - an IOMMU context bank instance - * @num: Hardware context number of this context - * @pdev: Platform device associated wit this HW instance - * @attached_elm: List element for domains to track which devices are - * attached to them - * - * A msm_iommu_ctx_drvdata holds the driver data for a single context bank - * within each IOMMU hardware instance - */ -struct msm_iommu_ctx_drvdata { - int num; - struct platform_device *pdev; - struct list_head attached_elm; -}; - -/* - * Look up an IOMMU context device by its context name. NULL if none found. - * Useful for testing and drivers that do not yet fully have IOMMU stuff in - * their platform devices. - */ -struct device *msm_iommu_get_ctx(const char *ctx_name); - -/* - * Interrupt handler for the IOMMU context fault interrupt. Hooking the - * interrupt is not supported in the API yet, but this will print an error - * message and dump useful IOMMU registers. - */ -irqreturn_t msm_iommu_fault_handler(int irq, void *dev_id); - -#endif |