-----Original Message----- From: Minghuan Lian Sent: Thursday, February 25, 2016 11:56 PM To: Stuart Yoder stuart.yoder@nxp.com; u-boot@lists.denx.de Cc: york sun york.sun@nxp.com; Prabhakar Kushwaha prabhakar.kushwaha@nxp.com; Mingkai Hu mingkai.hu@nxp.com; Yang-Leo Li leoyang.li@nxp.com; marc.zyngier@arm.com; Stuart Yoder stuart.yoder@nxp.com Subject: RE: [PATCH 4/7 v2] pci/layerscape: add support for LUT
Hi Stuart,
Please see my comments inline.
Thanks, Minghuan
-----Original Message----- From: Stuart Yoder [mailto:stuart.yoder@nxp.com] Sent: Friday, February 26, 2016 7:06 AM To: u-boot@lists.denx.de Cc: york sun york.sun@nxp.com; Prabhakar Kushwaha prabhakar.kushwaha@nxp.com; Mingkai Hu mingkai.hu@nxp.com; Minghuan Lian minghuan.lian@nxp.com; Yang-Leo Li leoyang.li@nxp.com; marc.zyngier@arm.com; Stuart Yoder stuart.yoder@nxp.com Subject: [PATCH 4/7 v2] pci/layerscape: add support for LUT
From: Stuart Yoder stuart.yoder@nxp.com
The per-PCI controller LUT (Look-Up-Table) is a 32-entry table that maps PCI requester IDs (bus/dev/fun) to a stream ID.
This patch implements infrastructure to enable LUT initialization: -define registers offsets -add an index to 'struct ls_pcie' to track next available slot in LUT -add function to allocate the next available entry index -add function to program a LUT entry
Signed-off-by: Stuart Yoder stuart.yoder@nxp.com
-v2 -no changes
drivers/pci/pcie_layerscape.c | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+)
diff --git a/drivers/pci/pcie_layerscape.c b/drivers/pci/pcie_layerscape.c index bb29222..6886488 100644 --- a/drivers/pci/pcie_layerscape.c +++ b/drivers/pci/pcie_layerscape.c @@ -58,6 +58,13 @@ #define PCIE_ATU_FUNC(x) (((x) & 0x7) << 16) #define PCIE_ATU_UPPER_TARGET 0x91C
+/* LUT registers */ +#define PCIE_LUT_BASE 0x80000
[Minghuan Lian] PCIE_LUT_BASE has been defined in immap_lsch2.h and immap_lsch3.h. LS1043a has the different base address.
+#define PCIE_LUT_UDR(n) (0x800 + (n) * 8) +#define PCIE_LUT_LDR(n) (0x804 + (n) * 8) +#define PCIE_LUT_ENABLE (1 << 31) +#define PCIE_LUT_ENTRY_COUNT 32
I'll move the new defines into immap_lsch3.h.
Stuart