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BN3PR0301MB1313; 5:EeC+1YNvw8N3XMkQ0I4IleRLIP50r2f3GBTIK+RSQSRApS52+ffZBg8IK+lYqd2HxC2g31+WgkzA+C939UHj45sps/tX8hlVNrqJcqPEUmWI08ottrZGBSCp7B6A/0WZgqVOlBUvMX40XeCcL46lciClKsCDt/g4pTJ5Uy021Nc=; 24:rPkEX7dP0ljLrrOlExWjcNwM8+Zq7dba6/pTQdUOUDZHFOBq2jQBGEIO1nBkFA94xi9z1afL5uskZLSGN2r5c+7Q7dfsSXtgQYdcHuY6zi0= SpamDiagnosticOutput: 1:23 SpamDiagnosticMetadata: NSPM X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Mar 2016 16:24:33.6309 (UTC) X-MS-Exchange-CrossTenant-Id: 5afe0b00-7697-4969-b663-5eab37d5f47e X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=5afe0b00-7697-4969-b663-5eab37d5f47e; Ip=[192.88.168.50]; Helo=[tx30smr01.am.freescale.net] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN3PR0301MB1313 Cc: leoyang.li@nxp.com Subject: [U-Boot] [RESEND PATCH 5/7 v5] pci/layerscape: add stream ID allocator X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.15 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" From: Stuart Yoder add a function to return the next available stream ID for PCI Signed-off-by: Stuart Yoder --- -v5: no change drivers/pci/pcie_layerscape.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/pci/pcie_layerscape.c b/drivers/pci/pcie_layerscape.c index 5cc6855..f3bf689 100644 --- a/drivers/pci/pcie_layerscape.c +++ b/drivers/pci/pcie_layerscape.c @@ -509,6 +509,17 @@ static void ls_pcie_lut_set_mapping(struct ls_pcie *pcie, int index, u32 devid, writel((devid << 16), lut + PCIE_LUT_UDR(index)); writel(streamid | PCIE_LUT_ENABLE, lut + PCIE_LUT_LDR(index)); } + +/* returns the next available streamid */ +static u32 ls_pcie_next_streamid(void) +{ + static int next_stream_id = FSL_PEX_STREAM_ID_START; + + if (next_stream_id > FSL_PEX_STREAM_ID_END) + return 0xffffffff; + + return next_stream_id++; +} #endif int ls_pcie_init_ctrl(int busno, enum srds_prtcl dev, struct ls_pcie_info *info)