--- /dev/null
+/*
+ * (C) Copyright 2006 - 2008
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Copyright (c) 2005 Cisco Systems. All rights reserved.
+ * Roland Dreier <rolandd@cisco.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+/* define DEBUG for debugging output (obviously ;-)) */
+#if 0
+#define DEBUG
+#endif
+
+#include <common.h>
+#include <pci.h>
+#include <asm/ppc4xx.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+#include <asm/errno.h>
+
+#if (defined(CONFIG_440SPE) || defined(CONFIG_405EX) || \
+ defined(CONFIG_460EX) || defined(CONFIG_460GT)) && \
+ defined(CONFIG_PCI) && !defined(CONFIG_PCI_DISABLE_PCIE)
+
+#include <asm/4xx_pcie.h>
+
+enum {
+ PTYPE_ENDPOINT = 0x0,
+ PTYPE_LEGACY_ENDPOINT = 0x1,
+ PTYPE_ROOT_PORT = 0x4,
+
+ LNKW_X1 = 0x1,
+ LNKW_X4 = 0x4,
+ LNKW_X8 = 0x8
+};
+
+static struct pci_controller pcie_hose[CONFIG_SYS_PCIE_NR_PORTS];
+
+/*
+ * Per default, all cards are present, so we need to check if the
+ * link comes up.
+ */
+int __board_pcie_card_present(int port)
+{
+ return 1;
+}
+int board_pcie_card_present(int port)
+ __attribute__((weak, alias("__board_pcie_card_present")));
+
+/*
+ * Some boards have runtime detection of the first and last PCIe
+ * slot used, so let's provide weak default functions for the
+ * common version.
+ */
+int __board_pcie_first(void)
+{
+ return 0;
+}
+int board_pcie_first(void)
+ __attribute__((weak, alias("__board_pcie_first")));
+
+int __board_pcie_last(void)
+{
+ return CONFIG_SYS_PCIE_NR_PORTS - 1;
+}
+int board_pcie_last(void)
+ __attribute__((weak, alias("__board_pcie_last")));
+
+void __board_pcie_setup_port(int port, int rootpoint)
+{
+ /* noting in this weak default implementation */
+}
+void board_pcie_setup_port(int port, int rootpoint)
+ __attribute__((weak, alias("__board_pcie_setup_port")));
+
+void pcie_setup_hoses(int busno)
+{
+ struct pci_controller *hose;
+ int i, bus;
+ int ret = 0;
+ char *env;
+ unsigned int delay;
+ int first = board_pcie_first();
+ int last = board_pcie_last();
+
+ /*
+ * Assume we're called after the PCI(X) hose(s) are initialized,
+ * which takes bus ID 0... and therefore start numbering PCIe's
+ * from the next number.
+ */
+ bus = busno;
+
+ for (i = first; i <= last; i++) {
+ /*
+ * Some boards (e.g. Katmai) can detects via hardware
+ * if a PCIe card is plugged, so let's check this.
+ */
+ if (!board_pcie_card_present(i))
+ continue;
+
+ if (is_end_point(i)) {
+ board_pcie_setup_port(i, 0);
+ ret = ppc4xx_init_pcie_endport(i);
+ } else {
+ board_pcie_setup_port(i, 1);
+ ret = ppc4xx_init_pcie_rootport(i);
+ }
+ if (ret == -ENODEV)
+ continue;
+ if (ret) {
+ printf("PCIE%d: initialization as %s failed\n", i,
+ is_end_point(i) ? "endpoint" : "root-complex");
+ continue;
+ }
+
+ hose = &pcie_hose[i];
+ hose->first_busno = bus;
+ hose->last_busno = bus;
+ hose->current_busno = bus;
+
+ /* setup mem resource */
+ pci_set_region(hose->regions + 0,
+ CONFIG_SYS_PCIE_MEMBASE + i * CONFIG_SYS_PCIE_MEMSIZE,
+ CONFIG_SYS_PCIE_MEMBASE + i * CONFIG_SYS_PCIE_MEMSIZE,
+ CONFIG_SYS_PCIE_MEMSIZE,
+ PCI_REGION_MEM);
+ hose->region_count = 1;
+ pci_register_hose(hose);
+
+ if (is_end_point(i)) {
+ ppc4xx_setup_pcie_endpoint(hose, i);
+ /*
+ * Reson for no scanning is endpoint can not generate
+ * upstream configuration accesses.
+ */
+ } else {
+ ppc4xx_setup_pcie_rootpoint(hose, i);
+ env = getenv ("pciscandelay");
+ if (env != NULL) {
+ delay = simple_strtoul(env, NULL, 10);
+ if (delay > 5)
+ printf("Warning, expect noticable delay before "
+ "PCIe scan due to 'pciscandelay' value!\n");
+ mdelay(delay * 1000);
+ }
+
+ /*
+ * Config access can only go down stream
+ */
+ hose->last_busno = pci_hose_scan(hose);
+ bus = hose->last_busno + 1;
+ }
+ }
+}
+
+static int validate_endpoint(struct pci_controller *hose)
+{
+ if (hose->cfg_data == (u8 *)CONFIG_SYS_PCIE0_CFGBASE)
+ return (is_end_point(0));
+ else if (hose->cfg_data == (u8 *)CONFIG_SYS_PCIE1_CFGBASE)
+ return (is_end_point(1));
+#if CONFIG_SYS_PCIE_NR_PORTS > 2
+ else if (hose->cfg_data == (u8 *)CONFIG_SYS_PCIE2_CFGBASE)
+ return (is_end_point(2));
+#endif
+
+ return 0;
+}
+
+static u8* pcie_get_base(struct pci_controller *hose, unsigned int devfn)
+{
+ u8 *base = (u8*)hose->cfg_data;
+
+ /* use local configuration space for the first bus */
+ if (PCI_BUS(devfn) == 0) {
+ if (hose->cfg_data == (u8*)CONFIG_SYS_PCIE0_CFGBASE)
+ base = (u8*)CONFIG_SYS_PCIE0_XCFGBASE;
+ if (hose->cfg_data == (u8*)CONFIG_SYS_PCIE1_CFGBASE)
+ base = (u8*)CONFIG_SYS_PCIE1_XCFGBASE;
+#if CONFIG_SYS_PCIE_NR_PORTS > 2
+ if (hose->cfg_data == (u8*)CONFIG_SYS_PCIE2_CFGBASE)
+ base = (u8*)CONFIG_SYS_PCIE2_XCFGBASE;
+#endif
+ }
+
+ return base;
+}
+
+static void pcie_dmer_disable(void)
+{
+ mtdcr (DCRN_PEGPL_CFG(DCRN_PCIE0_BASE),
+ mfdcr (DCRN_PEGPL_CFG(DCRN_PCIE0_BASE)) | GPL_DMER_MASK_DISA);
+ mtdcr (DCRN_PEGPL_CFG(DCRN_PCIE1_BASE),
+ mfdcr (DCRN_PEGPL_CFG(DCRN_PCIE1_BASE)) | GPL_DMER_MASK_DISA);
+#if CONFIG_SYS_PCIE_NR_PORTS > 2
+ mtdcr (DCRN_PEGPL_CFG(DCRN_PCIE2_BASE),
+ mfdcr (DCRN_PEGPL_CFG(DCRN_PCIE2_BASE)) | GPL_DMER_MASK_DISA);
+#endif
+}
+
+static void pcie_dmer_enable(void)
+{
+ mtdcr (DCRN_PEGPL_CFG (DCRN_PCIE0_BASE),
+ mfdcr (DCRN_PEGPL_CFG(DCRN_PCIE0_BASE)) & ~GPL_DMER_MASK_DISA);
+ mtdcr (DCRN_PEGPL_CFG (DCRN_PCIE1_BASE),
+ mfdcr (DCRN_PEGPL_CFG(DCRN_PCIE1_BASE)) & ~GPL_DMER_MASK_DISA);
+#if CONFIG_SYS_PCIE_NR_PORTS > 2
+ mtdcr (DCRN_PEGPL_CFG (DCRN_PCIE2_BASE),
+ mfdcr (DCRN_PEGPL_CFG(DCRN_PCIE2_BASE)) & ~GPL_DMER_MASK_DISA);
+#endif
+}
+
+static int pcie_read_config(struct pci_controller *hose, unsigned int devfn,
+ int offset, int len, u32 *val) {
+
+ *val = 0;
+
+ if (validate_endpoint(hose))
+ return 0; /* No upstream config access */
+
+ /*
+ * Bus numbers are relative to hose->first_busno
+ */
+ devfn -= PCI_BDF(hose->first_busno, 0, 0);
+
+ /*
+ * NOTICE: configuration space ranges are currenlty mapped only for
+ * the first 16 buses, so such limit must be imposed. In case more
+ * buses are required the TLB settings in board/amcc/<board>/init.S
+ * need to be altered accordingly (one bus takes 1 MB of memory space).
+ */
+ if (PCI_BUS(devfn) >= 16)
+ return 0;
+
+ /*
+ * Only single device/single function is supported for the primary and
+ * secondary buses of the 440SPe host bridge.
+ */
+ if ((!((PCI_FUNC(devfn) == 0) && (PCI_DEV(devfn) == 0))) &&
+ ((PCI_BUS(devfn) == 0) || (PCI_BUS(devfn) == 1)))
+ return 0;
+
+ pcie_get_base(hose, devfn);
+ offset += devfn << 4;
+
+ /*
+ * Reading from configuration space of non-existing device can
+ * generate transaction errors. For the read duration we suppress
+ * assertion of machine check exceptions to avoid those.
+ */
+ pcie_dmer_disable ();
+
+ debug("%s: cfg_data=%p offset=%08x\n", __func__,
+ hose->cfg_data, offset);
+ switch (len) {
+ case 1:
+ *val = in_8(hose->cfg_data + offset);
+ break;
+ case 2:
+ *val = in_le16((u16 *)(hose->cfg_data + offset));
+ break;
+ default:
+ *val = in_le32((u32*)(hose->cfg_data + offset));
+ break;
+ }
+
+ pcie_dmer_enable ();
+
+ return 0;
+}
+
+static int pcie_write_config(struct pci_controller *hose, unsigned int devfn,
+ int offset, int len, u32 val) {
+
+ if (validate_endpoint(hose))
+ return 0; /* No upstream config access */
+
+ /*
+ * Bus numbers are relative to hose->first_busno
+ */
+ devfn -= PCI_BDF(hose->first_busno, 0, 0);
+
+ /*
+ * Same constraints as in pcie_read_config().
+ */
+ if (PCI_BUS(devfn) >= 16)
+ return 0;
+
+ if ((!((PCI_FUNC(devfn) == 0) && (PCI_DEV(devfn) == 0))) &&
+ ((PCI_BUS(devfn) == 0) || (PCI_BUS(devfn) == 1)))
+ return 0;
+
+ pcie_get_base(hose, devfn);
+ offset += devfn << 4;
+
+ /*
+ * Suppress MCK exceptions, similar to pcie_read_config()
+ */
+ pcie_dmer_disable ();
+
+ switch (len) {
+ case 1:
+ out_8(hose->cfg_data + offset, val);
+ break;
+ case 2:
+ out_le16((u16 *)(hose->cfg_data + offset), val);
+ break;
+ default:
+ out_le32((u32 *)(hose->cfg_data + offset), val);
+ break;
+ }
+
+ pcie_dmer_enable ();
+
+ return 0;
+}
+
+int pcie_read_config_byte(struct pci_controller *hose,pci_dev_t dev,int offset,u8 *val)
+{
+ u32 v;
+ int rv;
+
+ rv = pcie_read_config(hose, dev, offset, 1, &v);
+ *val = (u8)v;
+ return rv;
+}
+
+int pcie_read_config_word(struct pci_controller *hose,pci_dev_t dev,int offset,u16 *val)
+{
+ u32 v;
+ int rv;
+
+ rv = pcie_read_config(hose, dev, offset, 2, &v);
+ *val = (u16)v;
+ return rv;
+}
+
+int pcie_read_config_dword(struct pci_controller *hose,pci_dev_t dev,int offset,u32 *val)
+{
+ u32 v;
+ int rv;
+
+ rv = pcie_read_config(hose, dev, offset, 3, &v);
+ *val = (u32)v;
+ return rv;
+}
+
+int pcie_write_config_byte(struct pci_controller *hose,pci_dev_t dev,int offset,u8 val)
+{
+ return pcie_write_config(hose,(u32)dev,offset,1,val);
+}
+
+int pcie_write_config_word(struct pci_controller *hose,pci_dev_t dev,int offset,u16 val)
+{
+ return pcie_write_config(hose,(u32)dev,offset,2,(u32 )val);
+}
+
+int pcie_write_config_dword(struct pci_controller *hose,pci_dev_t dev,int offset,u32 val)
+{
+ return pcie_write_config(hose,(u32)dev,offset,3,(u32 )val);
+}
+
+#if defined(CONFIG_440SPE)
+static void ppc4xx_setup_utl(u32 port) {
+
+ volatile void *utl_base = NULL;
+
+ /*
+ * Map UTL registers
+ */
+ switch (port) {
+ case 0:
+ mtdcr(DCRN_PEGPL_REGBAH(PCIE0), 0x0000000c);
+ mtdcr(DCRN_PEGPL_REGBAL(PCIE0), 0x20000000);
+ mtdcr(DCRN_PEGPL_REGMSK(PCIE0), 0x00007001);
+ mtdcr(DCRN_PEGPL_SPECIAL(PCIE0), 0x68782800);
+ break;
+
+ case 1:
+ mtdcr(DCRN_PEGPL_REGBAH(PCIE1), 0x0000000c);
+ mtdcr(DCRN_PEGPL_REGBAL(PCIE1), 0x20001000);
+ mtdcr(DCRN_PEGPL_REGMSK(PCIE1), 0x00007001);
+ mtdcr(DCRN_PEGPL_SPECIAL(PCIE1), 0x68782800);
+ break;
+
+ case 2:
+ mtdcr(DCRN_PEGPL_REGBAH(PCIE2), 0x0000000c);
+ mtdcr(DCRN_PEGPL_REGBAL(PCIE2), 0x20002000);
+ mtdcr(DCRN_PEGPL_REGMSK(PCIE2), 0x00007001);
+ mtdcr(DCRN_PEGPL_SPECIAL(PCIE2), 0x68782800);
+ break;
+ }
+ utl_base = (unsigned int *)(CONFIG_SYS_PCIE_BASE + 0x1000 * port);
+
+ /*
+ * Set buffer allocations and then assert VRB and TXE.
+ */
+ out_be32(utl_base + PEUTL_OUTTR, 0x08000000);
+ out_be32(utl_base + PEUTL_INTR, 0x02000000);
+ out_be32(utl_base + PEUTL_OPDBSZ, 0x10000000);
+ out_be32(utl_base + PEUTL_PBBSZ, 0x53000000);
+ out_be32(utl_base + PEUTL_IPHBSZ, 0x08000000);
+ out_be32(utl_base + PEUTL_IPDBSZ, 0x10000000);
+ out_be32(utl_base + PEUTL_RCIRQEN, 0x00f00000);
+ out_be32(utl_base + PEUTL_PCTL, 0x80800066);
+}
+
+static int check_error(void)
+{
+ u32 valPE0, valPE1, valPE2;
+ int err = 0;
+
+ /* SDR0_PEGPLLLCT1 reset */
+ if (!(valPE0 = SDR_READ(PESDR0_PLLLCT1) & 0x01000000))
+ printf("PCIE: SDR0_PEGPLLLCT1 reset error 0x%x\n", valPE0);
+
+ valPE0 = SDR_READ(PESDR0_RCSSET);
+ valPE1 = SDR_READ(PESDR1_RCSSET);
+ valPE2 = SDR_READ(PESDR2_RCSSET);
+
+ /* SDR0_PExRCSSET rstgu */
+ if (!(valPE0 & 0x01000000) ||
+ !(valPE1 & 0x01000000) ||
+ !(valPE2 & 0x01000000)) {
+ printf("PCIE: SDR0_PExRCSSET rstgu error\n");
+ err = -1;
+ }
+
+ /* SDR0_PExRCSSET rstdl */
+ if (!(valPE0 & 0x00010000) ||
+ !(valPE1 & 0x00010000) ||
+ !(valPE2 & 0x00010000)) {
+ printf("PCIE: SDR0_PExRCSSET rstdl error\n");
+ err = -1;
+ }
+
+ /* SDR0_PExRCSSET rstpyn */
+ if ((valPE0 & 0x00001000) ||
+ (valPE1 & 0x00001000) ||
+ (valPE2 & 0x00001000)) {
+ printf("PCIE: SDR0_PExRCSSET rstpyn error\n");
+ err = -1;
+ }
+
+ /* SDR0_PExRCSSET hldplb */
+ if ((valPE0 & 0x10000000) ||
+ (valPE1 & 0x10000000) ||
+ (valPE2 & 0x10000000)) {
+ printf("PCIE: SDR0_PExRCSSET hldplb error\n");
+ err = -1;
+ }
+
+ /* SDR0_PExRCSSET rdy */
+ if ((valPE0 & 0x00100000) ||
+ (valPE1 & 0x00100000) ||
+ (valPE2 & 0x00100000)) {
+ printf("PCIE: SDR0_PExRCSSET rdy error\n");
+ err = -1;
+ }
+
+ /* SDR0_PExRCSSET shutdown */
+ if ((valPE0 & 0x00000100) ||
+ (valPE1 & 0x00000100) ||
+ (valPE2 & 0x00000100)) {
+ printf("PCIE: SDR0_PExRCSSET shutdown error\n");
+ err = -1;
+ }
+ return err;
+}
+
+/*
+ * Initialize PCI Express core
+ */
+int ppc4xx_init_pcie(void)
+{
+ int time_out = 20;
+
+ /* Set PLL clock receiver to LVPECL */
+ SDR_WRITE(PESDR0_PLLLCT1, SDR_READ(PESDR0_PLLLCT1) | 1 << 28);
+
+ if (check_error()) {
+ printf("ERROR: failed to set PCIe reference clock receiver --"
+ "PESDR0_PLLLCT1 = 0x%08x\n", SDR_READ(PESDR0_PLLLCT1));
+
+ return -1;
+ }
+
+ /* Did resistance calibration work? */
+ if (!(SDR_READ(PESDR0_PLLLCT2) & 0x10000)) {
+ printf("ERROR: PCIe resistance calibration failed --"
+ "PESDR0_PLLLCT2 = 0x%08x\n", SDR_READ(PESDR0_PLLLCT2));
+
+ return -1;
+ }
+ /* De-assert reset of PCIe PLL, wait for lock */
+ SDR_WRITE(PESDR0_PLLLCT1, SDR_READ(PESDR0_PLLLCT1) & ~(1 << 24));
+ udelay(300); /* 300 uS is maximum time lock should take */
+
+ while (time_out) {
+ if (!(SDR_READ(PESDR0_PLLLCT3) & 0x10000000)) {
+ time_out--;
+ udelay(20); /* Wait 20 uS more if needed */
+ } else
+ break;
+ }
+ if (!time_out) {
+ printf("ERROR: PCIe PLL VCO output not locked to ref clock --"
+ "PESDR0_PLLLCTS=0x%08x\n", SDR_READ(PESDR0_PLLLCT3));
+
+ return -1;
+ }
+ return 0;
+}
+#endif
+
+#if defined(CONFIG_460EX) || defined(CONFIG_460GT)
+static void ppc4xx_setup_utl(u32 port)
+{
+ volatile void *utl_base = NULL;
+
+ /*
+ * Map UTL registers at 0x0801_n000 (4K 0xfff mask) PEGPLn_REGMSK
+ */
+ switch (port) {
+ case 0:
+ mtdcr(DCRN_PEGPL_REGBAH(PCIE0), U64_TO_U32_HIGH(CONFIG_SYS_PCIE0_UTLBASE));
+ mtdcr(DCRN_PEGPL_REGBAL(PCIE0), U64_TO_U32_LOW(CONFIG_SYS_PCIE0_UTLBASE));
+ mtdcr(DCRN_PEGPL_REGMSK(PCIE0), 0x00007001); /* BAM 11100000=4KB */
+ mtdcr(DCRN_PEGPL_SPECIAL(PCIE0), 0);
+ break;
+
+ case 1:
+ mtdcr(DCRN_PEGPL_REGBAH(PCIE1), U64_TO_U32_HIGH(CONFIG_SYS_PCIE0_UTLBASE));
+ mtdcr(DCRN_PEGPL_REGBAL(PCIE1), U64_TO_U32_LOW(CONFIG_SYS_PCIE0_UTLBASE)
+ + 0x1000);
+ mtdcr(DCRN_PEGPL_REGMSK(PCIE1), 0x00007001); /* BAM 11100000=4KB */
+ mtdcr(DCRN_PEGPL_SPECIAL(PCIE1), 0);
+ break;
+ }
+ utl_base = (unsigned int *)(CONFIG_SYS_PCIE_BASE + 0x1000 * port);
+
+ /*
+ * Set buffer allocations and then assert VRB and TXE.
+ */
+ out_be32(utl_base + PEUTL_PBCTL, 0x0800000c); /* PLBME, CRRE */
+ out_be32(utl_base + PEUTL_OUTTR, 0x08000000);
+ out_be32(utl_base + PEUTL_INTR, 0x02000000);
+ out_be32(utl_base + PEUTL_OPDBSZ, 0x04000000); /* OPD = 512 Bytes */
+ out_be32(utl_base + PEUTL_PBBSZ, 0x00000000); /* Max 512 Bytes */
+ out_be32(utl_base + PEUTL_IPHBSZ, 0x02000000);
+ out_be32(utl_base + PEUTL_IPDBSZ, 0x04000000); /* IPD = 512 Bytes */
+ out_be32(utl_base + PEUTL_RCIRQEN, 0x00f00000);
+ out_be32(utl_base + PEUTL_PCTL, 0x80800066); /* VRB,TXE,timeout=default */
+}
+
+/*
+ * TODO: double check PCI express SDR based on the latest user manual
+ * Some registers specified here no longer exist.. has to be
+ * updated based on the final EAS spec.
+ */
+static int check_error(void)
+{
+ u32 valPE0, valPE1;
+ int err = 0;
+
+ valPE0 = SDR_READ(SDRN_PESDR_RCSSET(0));
+ valPE1 = SDR_READ(SDRN_PESDR_RCSSET(1));
+
+ /* SDR0_PExRCSSET rstgu */
+ if (!(valPE0 & PESDRx_RCSSET_RSTGU) || !(valPE1 & PESDRx_RCSSET_RSTGU)) {
+ printf("PCIE: SDR0_PExRCSSET rstgu error\n");
+ err = -1;
+ }
+
+ /* SDR0_PExRCSSET rstdl */
+ if (!(valPE0 & PESDRx_RCSSET_RSTDL) || !(valPE1 & PESDRx_RCSSET_RSTDL)) {
+ printf("PCIE: SDR0_PExRCSSET rstdl error\n");
+ err = -1;
+ }
+
+ /* SDR0_PExRCSSET rstpyn */
+ if ((valPE0 & PESDRx_RCSSET_RSTPYN) || (valPE1 & PESDRx_RCSSET_RSTPYN)) {
+ printf("PCIE: SDR0_PExRCSSET rstpyn error\n");
+ err = -1;
+ }
+
+ /* SDR0_PExRCSSET hldplb */
+ if ((valPE0 & PESDRx_RCSSET_HLDPLB) || (valPE1 & PESDRx_RCSSET_HLDPLB)) {
+ printf("PCIE: SDR0_PExRCSSET hldplb error\n");
+ err = -1;
+ }
+
+ /* SDR0_PExRCSSET rdy */
+ if ((valPE0 & PESDRx_RCSSET_RDY) || (valPE1 & PESDRx_RCSSET_RDY)) {
+ printf("PCIE: SDR0_PExRCSSET rdy error\n");
+ err = -1;
+ }
+
+ return err;
+}
+
+/*
+ * Initialize PCI Express core as described in User Manual
+ * TODO: double check PE SDR PLL Register with the updated user manual.
+ */
+int ppc4xx_init_pcie(void)
+{
+ if (check_error())
+ return -1;
+
+ return 0;
+}
+#endif /* CONFIG_460EX */
+
+#if defined(CONFIG_405EX)
+static void ppc4xx_setup_utl(u32 port)
+{
+ u32 utl_base;
+
+ /*
+ * Map UTL registers at 0xef4f_n000 (4K 0xfff mask) PEGPLn_REGMSK
+ */
+ switch (port) {
+ case 0:
+ mtdcr(DCRN_PEGPL_REGBAH(PCIE0), 0x00000000);
+ mtdcr(DCRN_PEGPL_REGBAL(PCIE0), CONFIG_SYS_PCIE0_UTLBASE);
+ mtdcr(DCRN_PEGPL_REGMSK(PCIE0), 0x00007001); /* 4k region, valid */
+ mtdcr(DCRN_PEGPL_SPECIAL(PCIE0), 0);
+ break;
+
+ case 1:
+ mtdcr(DCRN_PEGPL_REGBAH(PCIE1), 0x00000000);
+ mtdcr(DCRN_PEGPL_REGBAL(PCIE1), CONFIG_SYS_PCIE1_UTLBASE);
+ mtdcr(DCRN_PEGPL_REGMSK(PCIE1), 0x00007001); /* 4k region, valid */
+ mtdcr(DCRN_PEGPL_SPECIAL(PCIE1), 0);
+
+ break;
+ }
+ utl_base = (port==0) ? CONFIG_SYS_PCIE0_UTLBASE : CONFIG_SYS_PCIE1_UTLBASE;
+
+ /*
+ * Set buffer allocations and then assert VRB and TXE.
+ */
+ out_be32((u32 *)(utl_base + PEUTL_OUTTR), 0x02000000);
+ out_be32((u32 *)(utl_base + PEUTL_INTR), 0x02000000);
+ out_be32((u32 *)(utl_base + PEUTL_OPDBSZ), 0x04000000);
+ out_be32((u32 *)(utl_base + PEUTL_PBBSZ), 0x21000000);
+ out_be32((u32 *)(utl_base + PEUTL_IPHBSZ), 0x02000000);
+ out_be32((u32 *)(utl_base + PEUTL_IPDBSZ), 0x04000000);
+ out_be32((u32 *)(utl_base + PEUTL_RCIRQEN), 0x00f00000);
+ out_be32((u32 *)(utl_base + PEUTL_PCTL), 0x80800066);
+
+ out_be32((u32 *)(utl_base + PEUTL_PBCTL), 0x0800000c);
+ out_be32((u32 *)(utl_base + PEUTL_RCSTA),
+ in_be32((u32 *)(utl_base + PEUTL_RCSTA)) | 0x000040000);
+}
+
+int ppc4xx_init_pcie(void)
+{
+ /*
+ * Nothing to do on 405EX
+ */
+ return 0;
+}
+#endif /* CONFIG_405EX */
+
+/*
+ * Board-specific pcie initialization
+ * Platform code can reimplement ppc4xx_init_pcie_port_hw() if needed
+ */
+
+/*
+ * Initialize various parts of the PCI Express core for our port:
+ *
+ * - Set as a root port and enable max width
+ * (PXIE0 -> X8, PCIE1 and PCIE2 -> X4).
+ * - Set up UTL configuration.
+ * - Increase SERDES drive strength to levels suggested by AMCC.
+ * - De-assert RSTPYN, RSTDL and RSTGU.
+ *
+ * NOTICE for 440SPE revB chip: PESDRn_UTLSET2 is not set - we leave it
+ * with default setting 0x11310000. The register has new fields,
+ * PESDRn_UTLSET2[LKINE] in particular: clearing it leads to PCIE core
+ * hang.
+ */
+#if defined(CONFIG_440SPE)
+int __ppc4xx_init_pcie_port_hw(int port, int rootport)
+{
+ u32 val = 1 << 24;
+ u32 utlset1;
+
+ if (rootport) {
+ val = PTYPE_ROOT_PORT << 20;
+ utlset1 = 0x21222222;
+ } else {
+ val = PTYPE_LEGACY_ENDPOINT << 20;
+ utlset1 = 0x20222222;
+ }
+
+ if (port == 0)
+ val |= LNKW_X8 << 12;
+ else
+ val |= LNKW_X4 << 12;
+
+ SDR_WRITE(SDRN_PESDR_DLPSET(port), val);
+ SDR_WRITE(SDRN_PESDR_UTLSET1(port), utlset1);
+ if (!ppc440spe_revB())
+ SDR_WRITE(SDRN_PESDR_UTLSET2(port), 0x11000000);
+ SDR_WRITE(SDRN_PESDR_HSSL0SET1(port), 0x35000000);
+ SDR_WRITE(SDRN_PESDR_HSSL1SET1(port), 0x35000000);
+ SDR_WRITE(SDRN_PESDR_HSSL2SET1(port), 0x35000000);
+ SDR_WRITE(SDRN_PESDR_HSSL3SET1(port), 0x35000000);
+ if (port == 0) {
+ SDR_WRITE(PESDR0_HSSL4SET1, 0x35000000);
+ SDR_WRITE(PESDR0_HSSL5SET1, 0x35000000);
+ SDR_WRITE(PESDR0_HSSL6SET1, 0x35000000);
+ SDR_WRITE(PESDR0_HSSL7SET1, 0x35000000);
+ }
+ SDR_WRITE(SDRN_PESDR_RCSSET(port), (SDR_READ(SDRN_PESDR_RCSSET(port)) &
+ ~(1 << 24 | 1 << 16)) | 1 << 12);
+
+ return 0;
+}
+#endif /* CONFIG_440SPE */
+
+#if defined(CONFIG_460EX) || defined(CONFIG_460GT)
+int __ppc4xx_init_pcie_port_hw(int port, int rootport)
+{
+ u32 val;
+ u32 utlset1;
+
+ if (rootport)
+ val = PTYPE_ROOT_PORT << 20;
+ else
+ val = PTYPE_LEGACY_ENDPOINT << 20;
+
+ if (port == 0) {
+ val |= LNKW_X1 << 12;
+ utlset1 = 0x20000000;
+ } else {
+ val |= LNKW_X4 << 12;
+ utlset1 = 0x20101101;
+ }
+
+ SDR_WRITE(SDRN_PESDR_DLPSET(port), val);
+ SDR_WRITE(SDRN_PESDR_UTLSET1(port), utlset1);
+ SDR_WRITE(SDRN_PESDR_UTLSET2(port), 0x01210000);
+
+ switch (port) {
+ case 0:
+ SDR_WRITE(PESDR0_L0CDRCTL, 0x00003230);
+ SDR_WRITE(PESDR0_L0DRV, 0x00000130);
+ SDR_WRITE(PESDR0_L0CLK, 0x00000006);
+
+ SDR_WRITE(PESDR0_PHY_CTL_RST,0x10000000);
+ break;
+
+ case 1:
+ SDR_WRITE(PESDR1_L0CDRCTL, 0x00003230);
+ SDR_WRITE(PESDR1_L1CDRCTL, 0x00003230);
+ SDR_WRITE(PESDR1_L2CDRCTL, 0x00003230);
+ SDR_WRITE(PESDR1_L3CDRCTL, 0x00003230);
+ SDR_WRITE(PESDR1_L0DRV, 0x00000130);
+ SDR_WRITE(PESDR1_L1DRV, 0x00000130);
+ SDR_WRITE(PESDR1_L2DRV, 0x00000130);
+ SDR_WRITE(PESDR1_L3DRV, 0x00000130);
+ SDR_WRITE(PESDR1_L0CLK, 0x00000006);
+ SDR_WRITE(PESDR1_L1CLK, 0x00000006);
+ SDR_WRITE(PESDR1_L2CLK, 0x00000006);
+ SDR_WRITE(PESDR1_L3CLK, 0x00000006);
+
+ SDR_WRITE(PESDR1_PHY_CTL_RST,0x10000000);
+ break;
+ }
+
+ SDR_WRITE(SDRN_PESDR_RCSSET(port), SDR_READ(SDRN_PESDR_RCSSET(port)) |
+ (PESDRx_RCSSET_RSTGU | PESDRx_RCSSET_RSTPYN));
+
+ /* Poll for PHY reset */
+ switch (port) {
+ case 0:
+ while (!(SDR_READ(PESDR0_RSTSTA) & 0x1))
+ udelay(10);
+ break;
+ case 1:
+ while (!(SDR_READ(PESDR1_RSTSTA) & 0x1))
+ udelay(10);
+ break;
+ }
+
+ SDR_WRITE(SDRN_PESDR_RCSSET(port),
+ (SDR_READ(SDRN_PESDR_RCSSET(port)) &
+ ~(PESDRx_RCSSET_RSTGU | PESDRx_RCSSET_RSTDL)) |
+ PESDRx_RCSSET_RSTPYN);
+
+ return 0;
+}
+#endif /* CONFIG_440SPE */
+
+#if defined(CONFIG_405EX)
+int __ppc4xx_init_pcie_port_hw(int port, int rootport)
+{
+ u32 val;
+
+ if (rootport)
+ val = 0x00401000;
+ else
+ val = 0x00101000;
+
+ SDR_WRITE(SDRN_PESDR_DLPSET(port), val);
+ SDR_WRITE(SDRN_PESDR_UTLSET1(port), 0x00000000);
+ SDR_WRITE(SDRN_PESDR_UTLSET2(port), 0x01010000);
+ SDR_WRITE(SDRN_PESDR_PHYSET1(port), 0x720F0000);
+ SDR_WRITE(SDRN_PESDR_PHYSET2(port), 0x70600003);
+
+ /* Assert the PE0_PHY reset */
+ SDR_WRITE(SDRN_PESDR_RCSSET(port), 0x01010000);
+ udelay(1000);
+
+ /* deassert the PE0_hotreset */
+ 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))
+ ;
+
+ /* deassert the PE0_gpl_utl_reset */
+ SDR_WRITE(SDRN_PESDR_RCSSET(port), 0x00101000);
+
+ if (port == 0)
+ mtdcr(DCRN_PEGPL_CFG(PCIE0), 0x10000000); /* guarded on */
+ else
+ mtdcr(DCRN_PEGPL_CFG(PCIE1), 0x10000000); /* guarded on */
+
+ return 0;
+}
+#endif /* CONFIG_405EX */
+
+int ppc4xx_init_pcie_port_hw(int port, int rootport)
+__attribute__((weak, alias("__ppc4xx_init_pcie_port_hw")));
+
+/*
+ * We map PCI Express configuration access into the 512MB regions
+ *
+ * NOTICE: revB is very strict about PLB real addressess and ranges to
+ * be mapped for config space; it seems to only work with d_nnnn_nnnn
+ * range (hangs the core upon config transaction attempts when set
+ * otherwise) while revA uses c_nnnn_nnnn.
+ *
+ * For 440SPe revA:
+ * PCIE0: 0xc_4000_0000
+ * PCIE1: 0xc_8000_0000
+ * PCIE2: 0xc_c000_0000
+ *
+ * For 440SPe revB:
+ * PCIE0: 0xd_0000_0000
+ * PCIE1: 0xd_2000_0000
+ * PCIE2: 0xd_4000_0000
+ *
+ * For 405EX:
+ * PCIE0: 0xa000_0000
+ * PCIE1: 0xc000_0000
+ *
+ * For 460EX/GT:
+ * PCIE0: 0xd_0000_0000
+ * PCIE1: 0xd_2000_0000
+ */
+static inline u64 ppc4xx_get_cfgaddr(int port)
+{
+#if defined(CONFIG_405EX)
+ if (port == 0)
+ return (u64)CONFIG_SYS_PCIE0_CFGBASE;
+ else
+ return (u64)CONFIG_SYS_PCIE1_CFGBASE;
+#endif
+#if defined(CONFIG_440SPE)
+ if (ppc440spe_revB()) {
+ switch (port) {
+ default: /* to satisfy compiler */
+ case 0:
+ return 0x0000000d00000000ULL;
+ case 1:
+ return 0x0000000d20000000ULL;
+ case 2:
+ return 0x0000000d40000000ULL;
+ }
+ } else {
+ switch (port) {
+ default: /* to satisfy compiler */
+ case 0:
+ return 0x0000000c40000000ULL;
+ case 1:
+ return 0x0000000c80000000ULL;
+ case 2:
+ return 0x0000000cc0000000ULL;
+ }
+ }
+#endif
+#if defined(CONFIG_460EX) || defined(CONFIG_460GT)
+ if (port == 0)
+ return 0x0000000d00000000ULL;
+ else
+ return 0x0000000d20000000ULL;
+#endif
+}
+
+/*
+ * 4xx boards as endpoint and root point setup
+ * and
+ * testing inbound and out bound windows
+ *
+ * 4xx boards can be plugged into another 4xx boards or you can get PCI-E
+ * cable which can be used to setup loop back from one port to another port.
+ * Please rememeber that unless there is a endpoint plugged in to root port it
+ * will not initialize. It is the same in case of endpoint , unless there is
+ * root port attached it will not initialize.
+ *
+ * In this release of software all the PCI-E ports are configured as either
+ * endpoint or rootpoint.In future we will have support for selective ports
+ * setup as endpoint and root point in single board.
+ *
+ * Once your board came up as root point , you can verify by reading
+ * /proc/bus/pci/devices. Where you can see the configuration registers
+ * of endpoint device attached to the port.
+ *
+ * Enpoint cofiguration can be verified by connecting 4xx board to any
+ * host or another 4xx board. Then try to scan the device. In case of
+ * linux use "lspci" or appripriate os command.
+ *
+ * How do I verify the inbound and out bound windows ? (4xx to 4xx)
+ * in this configuration inbound and outbound windows are setup to access
+ * sram memroy area. SRAM is at 0x4 0000 0000 , on PLB bus. This address
+ * is mapped at 0x90000000. From u-boot prompt write data 0xb000 0000,
+ * This is waere your POM(PLB out bound memory window) mapped. then
+ * read the data from other 4xx board's u-boot prompt at address
+ * 0x9000 0000(SRAM). Data should match.
+ * In case of inbound , write data to u-boot command prompt at 0xb000 0000
+ * which is mapped to 0x4 0000 0000. Now on rootpoint yucca u-boot prompt check
+ * data at 0x9000 0000(SRAM).Data should match.
+ */
+int ppc4xx_init_pcie_port(int port, int rootport)
+{
+ static int core_init;
+ volatile u32 val = 0;
+ int attempts;
+ u64 addr;
+ u32 low, high;
+
+ if (!core_init) {
+ if (ppc4xx_init_pcie())
+ return -1;
+ ++core_init;
+ }
+
+ /*
+ * Initialize various parts of the PCI Express core for our port
+ */
+ ppc4xx_init_pcie_port_hw(port, rootport);
+
+ /*
+ * Notice: the following delay has critical impact on device
+ * initialization - if too short (<50ms) the link doesn't get up.
+ */
+ mdelay(100);
+
+ val = SDR_READ(SDRN_PESDR_RCSSTS(port));
+ if (val & (1 << 20)) {
+ printf("PCIE%d: PGRST failed %08x\n", port, val);
+ return -1;
+ }
+
+ /*
+ * Verify link is up
+ */
+ val = SDR_READ(SDRN_PESDR_LOOP(port));
+ if (!(val & 0x00001000)) {
+ printf("PCIE%d: link is not up.\n", port);
+ return -ENODEV;
+ }
+
+ /*
+ * Setup UTL registers - but only on revA!
+ * We use default settings for revB chip.
+ */
+ if (!ppc440spe_revB())
+ ppc4xx_setup_utl(port);
+
+ /*
+ * We map PCI Express configuration access into the 512MB regions
+ */
+ addr = ppc4xx_get_cfgaddr(port);
+ low = U64_TO_U32_LOW(addr);
+ high = U64_TO_U32_HIGH(addr);
+
+ switch (port) {
+ case 0:
+ mtdcr(DCRN_PEGPL_CFGBAH(PCIE0), high);
+ mtdcr(DCRN_PEGPL_CFGBAL(PCIE0), low);
+ mtdcr(DCRN_PEGPL_CFGMSK(PCIE0), 0xe0000001); /* 512MB region, valid */
+ break;
+ case 1:
+ mtdcr(DCRN_PEGPL_CFGBAH(PCIE1), high);
+ mtdcr(DCRN_PEGPL_CFGBAL(PCIE1), low);
+ mtdcr(DCRN_PEGPL_CFGMSK(PCIE1), 0xe0000001); /* 512MB region, valid */
+ break;
+#if CONFIG_SYS_PCIE_NR_PORTS > 2
+ case 2:
+ mtdcr(DCRN_PEGPL_CFGBAH(PCIE2), high);
+ mtdcr(DCRN_PEGPL_CFGBAL(PCIE2), low);
+ mtdcr(DCRN_PEGPL_CFGMSK(PCIE2), 0xe0000001); /* 512MB region, valid */
+ break;
+#endif
+ }
+
+ /*
+ * Check for VC0 active and assert RDY.
+ */
+ attempts = 10;
+ while(!(SDR_READ(SDRN_PESDR_RCSSTS(port)) & (1 << 16))) {
+ if (!(attempts--)) {
+ printf("PCIE%d: VC0 not active\n", port);
+ return -1;
+ }
+ mdelay(1000);
+ }
+ SDR_WRITE(SDRN_PESDR_RCSSET(port),
+ SDR_READ(SDRN_PESDR_RCSSET(port)) | 1 << 20);
+ mdelay(100);
+
+ return 0;
+}
+
+int ppc4xx_init_pcie_rootport(int port)
+{
+ return ppc4xx_init_pcie_port(port, 1);
+}
+
+int ppc4xx_init_pcie_endport(int port)
+{
+ return ppc4xx_init_pcie_port(port, 0);
+}
+
+void ppc4xx_setup_pcie_rootpoint(struct pci_controller *hose, int port)
+{
+ volatile void *mbase = NULL;
+
+ pci_set_ops(hose,
+ pcie_read_config_byte,
+ pcie_read_config_word,
+ pcie_read_config_dword,
+ pcie_write_config_byte,
+ pcie_write_config_word,
+ pcie_write_config_dword);
+
+ switch (port) {
+ case 0:
+ mbase = (u32 *)CONFIG_SYS_PCIE0_XCFGBASE;
+ hose->cfg_data = (u8 *)CONFIG_SYS_PCIE0_CFGBASE;
+ break;
+ case 1:
+ mbase = (u32 *)CONFIG_SYS_PCIE1_XCFGBASE;
+ hose->cfg_data = (u8 *)CONFIG_SYS_PCIE1_CFGBASE;
+ break;
+#if CONFIG_SYS_PCIE_NR_PORTS > 2
+ case 2:
+ mbase = (u32 *)CONFIG_SYS_PCIE2_XCFGBASE;
+ hose->cfg_data = (u8 *)CONFIG_SYS_PCIE2_CFGBASE;
+ break;
+#endif
+ }
+
+ /*
+ * Set bus numbers on our root port
+ */
+ out_8((u8 *)mbase + PCI_PRIMARY_BUS, 0);
+ out_8((u8 *)mbase + PCI_SECONDARY_BUS, 1);
+ out_8((u8 *)mbase + PCI_SUBORDINATE_BUS, 1);
+
+ /*
+ * Set up outbound translation to hose->mem_space from PLB
+ * addresses at an offset of 0xd_0000_0000. We set the low
+ * bits of the mask to 11 to turn off splitting into 8
+ * subregions and to enable the outbound translation.
+ */
+ out_le32(mbase + PECFG_POM0LAH, 0x00000000);
+ out_le32(mbase + PECFG_POM0LAL, CONFIG_SYS_PCIE_MEMBASE +
+ port * CONFIG_SYS_PCIE_MEMSIZE);
+ debug("PECFG_POM0LA=%08x.%08x\n", in_le32(mbase + PECFG_POM0LAH),
+ in_le32(mbase + PECFG_POM0LAL));
+
+ switch (port) {
+ case 0:
+ mtdcr(DCRN_PEGPL_OMR1BAH(PCIE0), CONFIG_SYS_PCIE_ADDR_HIGH);
+ mtdcr(DCRN_PEGPL_OMR1BAL(PCIE0), CONFIG_SYS_PCIE_MEMBASE +
+ port * CONFIG_SYS_PCIE_MEMSIZE);
+ mtdcr(DCRN_PEGPL_OMR1MSKH(PCIE0), 0x7fffffff);
+ mtdcr(DCRN_PEGPL_OMR1MSKL(PCIE0),
+ ~(CONFIG_SYS_PCIE_MEMSIZE - 1) | 3);
+ debug("0:PEGPL_OMR1BA=%08x.%08x MSK=%08x.%08x\n",
+ mfdcr(DCRN_PEGPL_OMR1BAH(PCIE0)),
+ mfdcr(DCRN_PEGPL_OMR1BAL(PCIE0)),
+ mfdcr(DCRN_PEGPL_OMR1MSKH(PCIE0)),
+ mfdcr(DCRN_PEGPL_OMR1MSKL(PCIE0)));
+ break;
+ case 1:
+ mtdcr(DCRN_PEGPL_OMR1BAH(PCIE1), CONFIG_SYS_PCIE_ADDR_HIGH);
+ mtdcr(DCRN_PEGPL_OMR1BAL(PCIE1), CONFIG_SYS_PCIE_MEMBASE +
+ port * CONFIG_SYS_PCIE_MEMSIZE);
+ mtdcr(DCRN_PEGPL_OMR1MSKH(PCIE1), 0x7fffffff);
+ mtdcr(DCRN_PEGPL_OMR1MSKL(PCIE1),
+ ~(CONFIG_SYS_PCIE_MEMSIZE - 1) | 3);
+ debug("1:PEGPL_OMR1BA=%08x.%08x MSK=%08x.%08x\n",
+ mfdcr(DCRN_PEGPL_OMR1BAH(PCIE1)),
+ mfdcr(DCRN_PEGPL_OMR1BAL(PCIE1)),
+ mfdcr(DCRN_PEGPL_OMR1MSKH(PCIE1)),
+ mfdcr(DCRN_PEGPL_OMR1MSKL(PCIE1)));
+ break;
+#if CONFIG_SYS_PCIE_NR_PORTS > 2
+ case 2:
+ mtdcr(DCRN_PEGPL_OMR1BAH(PCIE2), CONFIG_SYS_PCIE_ADDR_HIGH);
+ mtdcr(DCRN_PEGPL_OMR1BAL(PCIE2), CONFIG_SYS_PCIE_MEMBASE +
+ port * CONFIG_SYS_PCIE_MEMSIZE);
+ mtdcr(DCRN_PEGPL_OMR1MSKH(PCIE2), 0x7fffffff);
+ mtdcr(DCRN_PEGPL_OMR1MSKL(PCIE2),
+ ~(CONFIG_SYS_PCIE_MEMSIZE - 1) | 3);
+ debug("2:PEGPL_OMR1BA=%08x.%08x MSK=%08x.%08x\n",
+ mfdcr(DCRN_PEGPL_OMR1BAH(PCIE2)),
+ mfdcr(DCRN_PEGPL_OMR1BAL(PCIE2)),
+ mfdcr(DCRN_PEGPL_OMR1MSKH(PCIE2)),
+ mfdcr(DCRN_PEGPL_OMR1MSKL(PCIE2)));
+ break;
+#endif
+ }
+
+ /* Set up 4GB 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, 0x7ffffff);
+ out_le32(mbase + PECFG_BAR0LMPA, 0);
+
+ out_le32(mbase + PECFG_PIM01SAH, 0xffff0000);
+ out_le32(mbase + PECFG_PIM01SAL, 0x00000000);
+ out_le32(mbase + PECFG_PIM0LAL, 0);
+ out_le32(mbase + PECFG_PIM0LAH, 0);
+ out_le32(mbase + PECFG_PIM1LAL, 0x00000000);
+ out_le32(mbase + PECFG_PIM1LAH, 0x00000004);
+ out_le32(mbase + PECFG_PIMEN, 0x1);
+
+ /* Enable I/O, Mem, and Busmaster cycles */
+ out_le16((u16 *)(mbase + PCI_COMMAND),
+ in_le16((u16 *)(mbase + PCI_COMMAND)) |
+ PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
+
+ /* Set Device and Vendor Id */
+ out_le16(mbase + 0x200, 0xaaa0 + port);
+ out_le16(mbase + 0x202, 0xbed0 + port);
+
+ /* Set Class Code to PCI-PCI bridge and Revision Id to 1 */
+ out_le32(mbase + 0x208, 0x06040001);
+
+ printf("PCIE%d: successfully set as root-complex\n", port);
+}
+
+int ppc4xx_setup_pcie_endpoint(struct pci_controller *hose, int port)
+{
+ volatile void *mbase = NULL;
+ int attempts = 0;
+
+ pci_set_ops(hose,
+ pcie_read_config_byte,
+ pcie_read_config_word,
+ pcie_read_config_dword,
+ pcie_write_config_byte,
+ pcie_write_config_word,
+ pcie_write_config_dword);
+
+ switch (port) {
+ case 0:
+ mbase = (u32 *)CONFIG_SYS_PCIE0_XCFGBASE;
+ hose->cfg_data = (u8 *)CONFIG_SYS_PCIE0_CFGBASE;
+ break;
+ case 1:
+ mbase = (u32 *)CONFIG_SYS_PCIE1_XCFGBASE;
+ hose->cfg_data = (u8 *)CONFIG_SYS_PCIE1_CFGBASE;
+ break;
+#if defined(CONFIG_SYS_PCIE2_CFGBASE)
+ case 2:
+ mbase = (u32 *)CONFIG_SYS_PCIE2_XCFGBASE;
+ hose->cfg_data = (u8 *)CONFIG_SYS_PCIE2_CFGBASE;
+ break;
+#endif
+ }
+
+ /*
+ * Set up outbound translation to hose->mem_space from PLB
+ * addresses at an offset of 0xd_0000_0000. We set the low
+ * bits of the mask to 11 to turn off splitting into 8
+ * subregions and to enable the outbound translation.
+ */
+ out_le32(mbase + PECFG_POM0LAH, 0x00001ff8);
+ out_le32(mbase + PECFG_POM0LAL, 0x00001000);
+
+ switch (port) {
+ case 0:
+ mtdcr(DCRN_PEGPL_OMR1BAH(PCIE0), CONFIG_SYS_PCIE_ADDR_HIGH);
+ mtdcr(DCRN_PEGPL_OMR1BAL(PCIE0), CONFIG_SYS_PCIE_MEMBASE +
+ port * CONFIG_SYS_PCIE_MEMSIZE);
+ mtdcr(DCRN_PEGPL_OMR1MSKH(PCIE0), 0x7fffffff);
+ mtdcr(DCRN_PEGPL_OMR1MSKL(PCIE0),
+ ~(CONFIG_SYS_PCIE_MEMSIZE - 1) | 3);
+ break;
+ case 1:
+ mtdcr(DCRN_PEGPL_OMR1BAH(PCIE1), CONFIG_SYS_PCIE_ADDR_HIGH);
+ mtdcr(DCRN_PEGPL_OMR1BAL(PCIE1), CONFIG_SYS_PCIE_MEMBASE +
+ port * CONFIG_SYS_PCIE_MEMSIZE);
+ mtdcr(DCRN_PEGPL_OMR1MSKH(PCIE1), 0x7fffffff);
+ mtdcr(DCRN_PEGPL_OMR1MSKL(PCIE1),
+ ~(CONFIG_SYS_PCIE_MEMSIZE - 1) | 3);
+ break;
+#if CONFIG_SYS_PCIE_NR_PORTS > 2
+ case 2:
+ mtdcr(DCRN_PEGPL_OMR1BAH(PCIE2), CONFIG_SYS_PCIE_ADDR_HIGH);
+ mtdcr(DCRN_PEGPL_OMR1BAL(PCIE2), CONFIG_SYS_PCIE_MEMBASE +
+ port * CONFIG_SYS_PCIE_MEMSIZE);
+ mtdcr(DCRN_PEGPL_OMR1MSKH(PCIE2), 0x7fffffff);
+ mtdcr(DCRN_PEGPL_OMR1MSKL(PCIE2),
+ ~(CONFIG_SYS_PCIE_MEMSIZE - 1) | 3);
+ break;
+#endif
+ }
+
+ /* 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_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(CONFIG_SYS_PCIE_INBOUND_BASE));
+ out_le32(mbase + PECFG_PIM0LAH, U64_TO_U32_HIGH(CONFIG_SYS_PCIE_INBOUND_BASE));
+ out_le32(mbase + PECFG_PIMEN, 0x1);
+
+ /* Enable I/O, Mem, and Busmaster cycles */
+ out_le16((u16 *)(mbase + PCI_COMMAND),
+ in_le16((u16 *)(mbase + PCI_COMMAND)) |
+ PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
+ 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--)) {
+ printf("PCIE%d: BME not active\n", port);
+ return -1;
+ }
+ mdelay(1000);
+ }
+
+ printf("PCIE%d: successfully set as endpoint\n", port);
+
+ return 0;
+}
+#endif /* CONFIG_440SPE && CONFIG_PCI */
Code Review / kvmfornfv.git / blobdiff