diff options
| author | Tony Truong <truong@codeaurora.org> | 2015-01-05 12:58:58 -0800 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-22 11:09:18 -0700 |
| commit | c27c02ee65b8686ccd23f49ab3ab83723bc6c47d (patch) | |
| tree | 73ff610b0056f1e0e3984a9f84fbabb9bb230071 /include/linux | |
| parent | 58763943bc12180855c16d8a59a43ddc587d0bc3 (diff) | |
msm: pcie: add SMMU support to calculate SID for PCIe EP
SMMU requires PCIe to provide a SID for each of its endpoint
so that the endpoint can successful transaction on the bus.
This change adds the support for PCIe bus driver to calculate
a SID for its endpoint and give it to the SMMU driver.
Change-Id: I52099bbfed0a38c75b0277b0f58f45f6e6559695
Signed-off-by: Tony Truong <truong@codeaurora.org>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/msm_pcie.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/include/linux/msm_pcie.h b/include/linux/msm_pcie.h index 259f4441c451..aba7fe20835e 100644 --- a/include/linux/msm_pcie.h +++ b/include/linux/msm_pcie.h @@ -1,4 +1,4 @@ -/* Copyright (c) 2014, The Linux Foundation. All rights reserved. +/* Copyright (c) 2014-2015, The Linux Foundation. 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 @@ -155,4 +155,17 @@ int msm_pcie_shadow_control(struct pci_dev *dev, bool enable); */ int msm_pcie_debug_info(struct pci_dev *dev, u32 option, u32 base, u32 offset, u32 mask, u32 value); + +/* + * msm_pcie_configure_sid - calculates the SID for a PCIe endpoint. + * @dev: device structure + * @sid: the calculated SID + * @domain: the domain number of the Root Complex + * + * This function calculates the SID for a PCIe endpoint device. + * + * Return: 0 on success, negative value on error + */ +int msm_pcie_configure_sid(struct device *dev, u32 *sid, + int *domain); #endif |