From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stuart Yoder Date: Tue, 8 Mar 2016 09:35:55 -0600 Subject: [U-Boot] [PATCH 5/7 v4] pci/layerscape: add stream ID allocator In-Reply-To: <1457451357-14000-1-git-send-email-stuart.yoder@nxp.com> References: <1457451357-14000-1-git-send-email-stuart.yoder@nxp.com> Message-ID: <1457451357-14000-6-git-send-email-stuart.yoder@nxp.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de From: Stuart Yoder add a function to return the next available stream ID for PCI Signed-off-by: Stuart Yoder --- -v4: no changes 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 8435446..4d24436 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) -- 1.7.9.5