diff options
| author | Stuart Yoder <stuart.yoder@freescale.com> | 2015-07-02 11:29:04 +0530 |
|---|---|---|
| committer | York Sun <yorksun@freescale.com> | 2015-07-20 11:44:37 -0700 |
| commit | 70e52d211533c45f0d26c4d87cbeee31560fbe04 (patch) | |
| tree | d77fd0bfcf646432c3cafb072a0c7c6cc3c69c22 /drivers | |
| parent | 21c69870679d6a99d5d5b73471bb0330fc75e1af (diff) | |
| download | talos-obmc-uboot-70e52d211533c45f0d26c4d87cbeee31560fbe04.tar.gz talos-obmc-uboot-70e52d211533c45f0d26c4d87cbeee31560fbe04.zip | |
armv8/fsl-lsch3: device tree fixups for PCI stream IDs
This patch adds the infrastructure to update device
tree nodes to convey SMMU stream IDs in the device
tree. Fixups are implemented for PCI controllers
initially.
Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pci/pcie_layerscape.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/drivers/pci/pcie_layerscape.c b/drivers/pci/pcie_layerscape.c index 402c5193e0..3ef4975556 100644 --- a/drivers/pci/pcie_layerscape.c +++ b/drivers/pci/pcie_layerscape.c @@ -11,6 +11,7 @@ #include <asm/io.h> #include <errno.h> #include <malloc.h> +#include <asm/arch-fsl-lsch3/fdt.h> #ifndef CONFIG_SYS_PCI_MEMORY_BUS #define CONFIG_SYS_PCI_MEMORY_BUS CONFIG_SYS_SDRAM_BASE @@ -528,3 +529,64 @@ void ft_pci_setup(void *blob, bd_t *bd) { } #endif + +#ifdef CONFIG_LS2085A + +void pcie_set_available_streamids(void *blob, const char *pcie_path, + u32 *stream_ids, int count) +{ + int nodeoffset; + int i; + + nodeoffset = fdt_path_offset(blob, pcie_path); + if (nodeoffset < 0) { + printf("\n%s: ERROR: unable to update PCIe node\n", __func__); + return; + } + + /* for each stream ID, append to mmu-masters */ + for (i = 0; i < count; i++) { + fdt_appendprop_u32(blob, nodeoffset, "available-stream-ids", + stream_ids[i]); + } +} + +#define MAX_STREAM_IDS 4 +void fdt_fixup_smmu_pcie(void *blob) +{ + int count; + u32 stream_ids[MAX_STREAM_IDS]; + + #ifdef CONFIG_PCIE1 + /* PEX1 stream ID fixup */ + count = FSL_PEX1_STREAM_ID_END - FSL_PEX1_STREAM_ID_START + 1; + alloc_stream_ids(FSL_PEX1_STREAM_ID_START, count, stream_ids, + MAX_STREAM_IDS); + pcie_set_available_streamids(blob, "/pcie@3400000", stream_ids, count); + #endif + + #ifdef CONFIG_PCIE2 + /* PEX2 stream ID fixup */ + count = FSL_PEX2_STREAM_ID_END - FSL_PEX2_STREAM_ID_START + 1; + alloc_stream_ids(FSL_PEX2_STREAM_ID_START, count, stream_ids, + MAX_STREAM_IDS); + pcie_set_available_streamids(blob, "/pcie@3500000", stream_ids, count); + #endif + + #ifdef CONFIG_PCIE3 + /* PEX3 stream ID fixup */ + count = FSL_PEX3_STREAM_ID_END - FSL_PEX3_STREAM_ID_START + 1; + alloc_stream_ids(FSL_PEX3_STREAM_ID_START, count, stream_ids, + MAX_STREAM_IDS); + pcie_set_available_streamids(blob, "/pcie@3600000", stream_ids, count); + #endif + + #ifdef CONFIG_PCIE4 + /* PEX4 stream ID fixup */ + count = FSL_PEX4_STREAM_ID_END - FSL_PEX4_STREAM_ID_START + 1; + alloc_stream_ids(FSL_PEX4_STREAM_ID_START, count, stream_ids, + MAX_STREAM_IDS); + pcie_set_available_streamids(blob, "/pcie@3700000", stream_ids, count); + #endif +} +#endif |
