From: Stuart Yoder stuart.yoder@nxp.com
add a function to return the next available stream ID for PCI
Signed-off-by: Stuart Yoder stuart.yoder@nxp.com --- -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)