xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

iommu/msm: Move mach includes to iommu directory

Browse Source 
Two header files exist in mach-msm's include/mach directory that
are only used by the MSM iommu driver. Move these files to the
iommu driver directory and prefix them with "msm_". This allows
us to compile the MSM iommu driver on multi-platform kernels.

Acked-by: Joerg Roedel <joro@8bytes.org>
Cc: Stepan Moskovchenko <stepanm@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: David Brown <davidb@codeaurora.org>
This commit is contained in:
Stephen Boyd
2013-07-24 13:54:33 -07:00
committed by David Brown
parent 20508a15ba
commit 0b559df5ce
4 changed files with 4 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

120
drivers/iommu/msm_iommu.h Normal file
View File

@@ -0,0 +1,120 @@
/* 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