From 5cb4af4791f61843432155142b6cfac901f66c10 Mon Sep 17 00:00:00 2001 From: Stefan Roese Date: Thu, 18 Oct 2007 07:39:38 +0200 Subject: ppc4xx: Add PCIe endpoint support on Kilauea (405EX) This patch adds endpoint support for the AMCC Kilauea eval board. It can be tested by connecting a reworked PCIe cable (only 1x lane singles connected) to another root-complex. In this test setup, a 64MB inbound window is configured at BAR0 which maps to 0 on the PLB side. So accessing this BAR0 from the root-complex will access the first 64MB of the SDRAM on the PPC side. Signed-off-by: Stefan Roese --- cpu/ppc4xx/4xx_pcie.c | 31 +++++++++++++++++++++---------- 1 file changed, 21 insertions(+), 10 deletions(-) (limited to 'cpu/ppc4xx') diff --git a/cpu/ppc4xx/4xx_pcie.c b/cpu/ppc4xx/4xx_pcie.c index 9ab358857a..da179f9c3a 100644 --- a/cpu/ppc4xx/4xx_pcie.c +++ b/cpu/ppc4xx/4xx_pcie.c @@ -474,12 +474,6 @@ int __ppc4xx_init_pcie_port_hw(int port, int rootport) { u32 val; - /* - * test-only: - * This needs some testing and perhaps changes for - * endpoint configuration. Probably no PHY reset at all, etc. - * sr, 2007-10-03 - */ if (rootport) val = 0x00401000; else @@ -496,7 +490,10 @@ int __ppc4xx_init_pcie_port_hw(int port, int rootport) udelay(1000); /* deassert the PE0_hotreset */ - SDR_WRITE(SDRN_PESDR_RCSSET(port), 0x01101000); + if (is_end_point(port)) + SDR_WRITE(SDRN_PESDR_RCSSET(port), 0x01111000); + else + SDR_WRITE(SDRN_PESDR_RCSSET(port), 0x01101000); /* poll for phy !reset */ while (!(SDR_READ(SDRN_PESDR_PHYSTA(port)) & 0x00001000)) @@ -903,11 +900,22 @@ int ppc4xx_setup_pcie_endpoint(struct pci_controller *hose, int port) #endif } - /* Set up 16GB inbound memory window at 0 */ + /* Set up 64MB inbound memory window at 0 */ out_le32(mbase + PCI_BASE_ADDRESS_0, 0); out_le32(mbase + PCI_BASE_ADDRESS_1, 0); - out_le32(mbase + PECFG_BAR0HMPA, 0x7fffffc); - out_le32(mbase + PECFG_BAR0LMPA, 0); + + out_le32(mbase + PECFG_PIM01SAH, 0xffffffff); + out_le32(mbase + PECFG_PIM01SAL, 0xfc000000); + + /* Setup BAR0 */ + out_le32(mbase + PECFG_BAR0HMPA, 0x7fffffff); + out_le32(mbase + PECFG_BAR0LMPA, 0xfc000000 | PCI_BASE_ADDRESS_MEM_TYPE_64); + + /* Disable BAR1 & BAR2 */ + out_le32(mbase + PECFG_BAR1MPA, 0); + out_le32(mbase + PECFG_BAR2HMPA, 0); + out_le32(mbase + PECFG_BAR2LMPA, 0); + out_le32(mbase + PECFG_PIM0LAL, U64_TO_U32_LOW(CFG_PCIE_INBOUND_BASE)); out_le32(mbase + PECFG_PIM0LAH, U64_TO_U32_HIGH(CFG_PCIE_INBOUND_BASE)); out_le32(mbase + PECFG_PIMEN, 0x1); @@ -919,6 +927,9 @@ int ppc4xx_setup_pcie_endpoint(struct pci_controller *hose, int port) out_le16(mbase + 0x200, 0xcaad); /* Setting vendor ID */ out_le16(mbase + 0x202, 0xfeed); /* Setting device ID */ + /* Set Class Code to Processor/PPC */ + out_le32(mbase + 0x208, 0x0b200001); + attempts = 10; while(!(SDR_READ(SDRN_PESDR_RCSSTS(port)) & (1 << 8))) { if (!(attempts--)) { -- cgit v1.2.1