aboutsummaryrefslogtreecommitdiff
path: root/arch/ppc/syslib/ppc440spe_pcie.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/ppc/syslib/ppc440spe_pcie.c')
-rw-r--r--arch/ppc/syslib/ppc440spe_pcie.c441
1 files changed, 0 insertions, 441 deletions
diff --git a/arch/ppc/syslib/ppc440spe_pcie.c b/arch/ppc/syslib/ppc440spe_pcie.c
deleted file mode 100644
index dd5d4b958c3..00000000000
--- a/arch/ppc/syslib/ppc440spe_pcie.c
+++ /dev/null
@@ -1,441 +0,0 @@
-/*
- * Copyright (c) 2005 Cisco Systems. All rights reserved.
- * Roland Dreier <rolandd@cisco.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- */
-
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-
-#include <asm/reg.h>
-#include <asm/io.h>
-#include <asm/ibm44x.h>
-
-#include "ppc440spe_pcie.h"
-
-static int
-pcie_read_config(struct pci_bus *bus, unsigned int devfn, int offset,
- int len, u32 *val)
-{
- struct pci_controller *hose = bus->sysdata;
-
- if (PCI_SLOT(devfn) != 1)
- return PCIBIOS_DEVICE_NOT_FOUND;
-
- offset += devfn << 12;
-
- /*
- * Note: the caller has already checked that offset is
- * suitably aligned and that len is 1, 2 or 4.
- */
- switch (len) {
- case 1:
- *val = in_8(hose->cfg_data + offset);
- break;
- case 2:
- *val = in_le16(hose->cfg_data + offset);
- break;
- default:
- *val = in_le32(hose->cfg_data + offset);
- break;
- }
-
- if (0) printk("%s: read %x(%d) @ %x\n", __func__, *val, len, offset);
-
- return PCIBIOS_SUCCESSFUL;
-}
-
-static int
-pcie_write_config(struct pci_bus *bus, unsigned int devfn, int offset,
- int len, u32 val)
-{
- struct pci_controller *hose = bus->sysdata;
-
- if (PCI_SLOT(devfn) != 1)
- return PCIBIOS_DEVICE_NOT_FOUND;
-
- offset += devfn << 12;
-
- switch (len) {
- case 1:
- out_8(hose->cfg_data + offset, val);
- break;
- case 2:
- out_le16(hose->cfg_data + offset, val);
- break;
- default:
- out_le32(hose->cfg_data + offset, val);
- break;
- }
- return PCIBIOS_SUCCESSFUL;
-}
-
-static struct pci_ops pcie_pci_ops =
-{
- .read = pcie_read_config,
- .write = pcie_write_config
-};
-
-enum {
- PTYPE_ENDPOINT = 0x0,
- PTYPE_LEGACY_ENDPOINT = 0x1,
- PTYPE_ROOT_PORT = 0x4,
-
- LNKW_X1 = 0x1,
- LNKW_X4 = 0x4,
- LNKW_X8 = 0x8
-};
-
-static void check_error(void)
-{
- u32 valPE0, valPE1, valPE2;
-
- /* SDR0_PEGPLLLCT1 reset */
- if (!(valPE0 = SDR_READ(PESDR0_PLLLCT1) & 0x01000000)) {
- printk(KERN_INFO "PCIE: SDR0_PEGPLLLCT1 reset error 0x%8x\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)) {
- printk(KERN_INFO "PCIE: SDR0_PExRCSSET rstgu error\n");
- }
-
- /* SDR0_PExRCSSET rstdl */
- if ( !(valPE0 & 0x00010000) ||
- !(valPE1 & 0x00010000) ||
- !(valPE2 & 0x00010000)) {
- printk(KERN_INFO "PCIE: SDR0_PExRCSSET rstdl error\n");
- }
-
- /* SDR0_PExRCSSET rstpyn */
- if ( (valPE0 & 0x00001000) ||
- (valPE1 & 0x00001000) ||
- (valPE2 & 0x00001000)) {
- printk(KERN_INFO "PCIE: SDR0_PExRCSSET rstpyn error\n");
- }
-
- /* SDR0_PExRCSSET hldplb */
- if ( (valPE0 & 0x10000000) ||
- (valPE1 & 0x10000000) ||
- (valPE2 & 0x10000000)) {
- printk(KERN_INFO "PCIE: SDR0_PExRCSSET hldplb error\n");
- }
-
- /* SDR0_PExRCSSET rdy */
- if ( (valPE0 & 0x00100000) ||
- (valPE1 & 0x00100000) ||
- (valPE2 & 0x00100000)) {
- printk(KERN_INFO "PCIE: SDR0_PExRCSSET rdy error\n");
- }
-
- /* SDR0_PExRCSSET shutdown */
- if ( (valPE0 & 0x00000100) ||
- (valPE1 & 0x00000100) ||
- (valPE2 & 0x00000100)) {
- printk(KERN_INFO "PCIE: SDR0_PExRCSSET shutdown error\n");
- }
-}
-
-/*
- * Initialize PCI Express core as described in User Manual section 27.12.1
- */
-int ppc440spe_init_pcie(void)
-{
- /* Set PLL clock receiver to LVPECL */
- SDR_WRITE(PESDR0_PLLLCT1, SDR_READ(PESDR0_PLLLCT1) | 1 << 28);
-
- check_error();
-
- printk(KERN_INFO "PCIE initialization OK\n");
-
- if (!(SDR_READ(PESDR0_PLLLCT2) & 0x10000))
- printk(KERN_INFO "PESDR_PLLCT2 resistance calibration failed (0x%08x)\n",
- SDR_READ(PESDR0_PLLLCT2));
-
- /* De-assert reset of PCIe PLL, wait for lock */
- SDR_WRITE(PESDR0_PLLLCT1, SDR_READ(PESDR0_PLLLCT1) & ~(1 << 24));
- udelay(3);
-
- return 0;
-}
-
-int ppc440spe_init_pcie_rootport(int port)
-{
- static int core_init;
- void __iomem *utl_base;
- u32 val = 0;
- int i;
-
- if (!core_init) {
- ++core_init;
- i = ppc440spe_init_pcie();
- if (i)
- return i;
- }
-
- /*
- * 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.
- */
- switch (port) {
- case 0:
- SDR_WRITE(PESDR0_DLPSET, PTYPE_ROOT_PORT << 20 | LNKW_X8 << 12);
-
- SDR_WRITE(PESDR0_UTLSET1, 0x21222222);
- SDR_WRITE(PESDR0_UTLSET2, 0x11000000);
-
- SDR_WRITE(PESDR0_HSSL0SET1, 0x35000000);
- SDR_WRITE(PESDR0_HSSL1SET1, 0x35000000);
- SDR_WRITE(PESDR0_HSSL2SET1, 0x35000000);
- SDR_WRITE(PESDR0_HSSL3SET1, 0x35000000);
- SDR_WRITE(PESDR0_HSSL4SET1, 0x35000000);
- SDR_WRITE(PESDR0_HSSL5SET1, 0x35000000);
- SDR_WRITE(PESDR0_HSSL6SET1, 0x35000000);
- SDR_WRITE(PESDR0_HSSL7SET1, 0x35000000);
-
- SDR_WRITE(PESDR0_RCSSET,
- (SDR_READ(PESDR0_RCSSET) & ~(1 << 24 | 1 << 16)) | 1 << 12);
- break;
-
- case 1:
- SDR_WRITE(PESDR1_DLPSET, PTYPE_ROOT_PORT << 20 | LNKW_X4 << 12);
-
- SDR_WRITE(PESDR1_UTLSET1, 0x21222222);
- SDR_WRITE(PESDR1_UTLSET2, 0x11000000);
-
- SDR_WRITE(PESDR1_HSSL0SET1, 0x35000000);
- SDR_WRITE(PESDR1_HSSL1SET1, 0x35000000);
- SDR_WRITE(PESDR1_HSSL2SET1, 0x35000000);
- SDR_WRITE(PESDR1_HSSL3SET1, 0x35000000);
-
- SDR_WRITE(PESDR1_RCSSET,
- (SDR_READ(PESDR1_RCSSET) & ~(1 << 24 | 1 << 16)) | 1 << 12);
- break;
-
- case 2:
- SDR_WRITE(PESDR2_DLPSET, PTYPE_ROOT_PORT << 20 | LNKW_X4 << 12);
-
- SDR_WRITE(PESDR2_UTLSET1, 0x21222222);
- SDR_WRITE(PESDR2_UTLSET2, 0x11000000);
-
- SDR_WRITE(PESDR2_HSSL0SET1, 0x35000000);
- SDR_WRITE(PESDR2_HSSL1SET1, 0x35000000);
- SDR_WRITE(PESDR2_HSSL2SET1, 0x35000000);
- SDR_WRITE(PESDR2_HSSL3SET1, 0x35000000);
-
- SDR_WRITE(PESDR2_RCSSET,
- (SDR_READ(PESDR2_RCSSET) & ~(1 << 24 | 1 << 16)) | 1 << 12);
- break;
- }
-
- mdelay(1000);
-
- switch (port) {
- case 0: val = SDR_READ(PESDR0_RCSSTS); break;
- case 1: val = SDR_READ(PESDR1_RCSSTS); break;
- case 2: val = SDR_READ(PESDR2_RCSSTS); break;
- }
-
- if (!(val & (1 << 20)))
- printk(KERN_INFO "PCIE%d: PGRST inactive\n", port);
- else
- printk(KERN_WARNING "PGRST for PCIE%d failed %08x\n", port, val);
-
- switch (port) {
- case 0: printk(KERN_INFO "PCIE0: LOOP %08x\n", SDR_READ(PESDR0_LOOP)); break;
- case 1: printk(KERN_INFO "PCIE1: LOOP %08x\n", SDR_READ(PESDR1_LOOP)); break;
- case 2: printk(KERN_INFO "PCIE2: LOOP %08x\n", SDR_READ(PESDR2_LOOP)); break;
- }
-
- /*
- * Map UTL registers at 0xc_1000_0n00
- */
- switch (port) {
- case 0:
- mtdcr(DCRN_PEGPL_REGBAH(PCIE0), 0x0000000c);
- mtdcr(DCRN_PEGPL_REGBAL(PCIE0), 0x10000000);
- 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), 0x10001000);
- 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), 0x10002000);
- mtdcr(DCRN_PEGPL_REGMSK(PCIE2), 0x00007001);
- mtdcr(DCRN_PEGPL_SPECIAL(PCIE2), 0x68782800);
- }
-
- utl_base = ioremap64(0xc10000000ull + 0x1000 * port, 0x100);
-
- /*
- * 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);
-
- iounmap(utl_base);
-
- /*
- * We map PCI Express configuration access into the 512MB regions
- * PCIE0: 0xc_4000_0000
- * PCIE1: 0xc_8000_0000
- * PCIE2: 0xc_c000_0000
- */
- switch (port) {
- case 0:
- mtdcr(DCRN_PEGPL_CFGBAH(PCIE0), 0x0000000c);
- mtdcr(DCRN_PEGPL_CFGBAL(PCIE0), 0x40000000);
- mtdcr(DCRN_PEGPL_CFGMSK(PCIE0), 0xe0000001); /* 512MB region, valid */
- break;
-
- case 1:
- mtdcr(DCRN_PEGPL_CFGBAH(PCIE1), 0x0000000c);
- mtdcr(DCRN_PEGPL_CFGBAL(PCIE1), 0x80000000);
- mtdcr(DCRN_PEGPL_CFGMSK(PCIE1), 0xe0000001); /* 512MB region, valid */
- break;
-
- case 2:
- mtdcr(DCRN_PEGPL_CFGBAH(PCIE2), 0x0000000c);
- mtdcr(DCRN_PEGPL_CFGBAL(PCIE2), 0xc0000000);
- mtdcr(DCRN_PEGPL_CFGMSK(PCIE2), 0xe0000001); /* 512MB region, valid */
- break;
- }
-
- /*
- * Check for VC0 active and assert RDY.
- */
- switch (port) {
- case 0:
- if (!(SDR_READ(PESDR0_RCSSTS) & (1 << 16)))
- printk(KERN_WARNING "PCIE0: VC0 not active\n");
- SDR_WRITE(PESDR0_RCSSET, SDR_READ(PESDR0_RCSSET) | 1 << 20);
- break;
- case 1:
- if (!(SDR_READ(PESDR1_RCSSTS) & (1 << 16)))
- printk(KERN_WARNING "PCIE0: VC0 not active\n");
- SDR_WRITE(PESDR1_RCSSET, SDR_READ(PESDR1_RCSSET) | 1 << 20);
- break;
- case 2:
- if (!(SDR_READ(PESDR2_RCSSTS) & (1 << 16)))
- printk(KERN_WARNING "PCIE0: VC0 not active\n");
- SDR_WRITE(PESDR2_RCSSET, SDR_READ(PESDR2_RCSSET) | 1 << 20);
- break;
- }
-
-#if 0
- /* Dump all config regs */
- for (i = 0x300; i <= 0x320; ++i)
- printk("[%04x] 0x%08x\n", i, SDR_READ(i));
- for (i = 0x340; i <= 0x353; ++i)
- printk("[%04x] 0x%08x\n", i, SDR_READ(i));
- for (i = 0x370; i <= 0x383; ++i)
- printk("[%04x] 0x%08x\n", i, SDR_READ(i));
- for (i = 0x3a0; i <= 0x3a2; ++i)
- printk("[%04x] 0x%08x\n", i, SDR_READ(i));
- for (i = 0x3c0; i <= 0x3c3; ++i)
- printk("[%04x] 0x%08x\n", i, SDR_READ(i));
-#endif
-
- mdelay(100);
-
- return 0;
-}
-
-void ppc440spe_setup_pcie(struct pci_controller *hose, int port)
-{
- void __iomem *mbase;
-
- /*
- * Map 16MB, which is enough for 4 bits of bus #
- */
- hose->cfg_data = ioremap64(0xc40000000ull + port * 0x40000000,
- 1 << 24);
- hose->ops = &pcie_pci_ops;
-
- /*
- * Set bus numbers on our root port
- */
- mbase = ioremap64(0xc50000000ull + port * 0x40000000, 4096);
- out_8(mbase + PCI_PRIMARY_BUS, 0);
- out_8(mbase + PCI_SECONDARY_BUS, 0);
-
- /*
- * 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, 0);
- out_le32(mbase + PECFG_POM0LAL, hose->mem_space.start);
-
- switch (port) {
- case 0:
- mtdcr(DCRN_PEGPL_OMR1BAH(PCIE0), 0x0000000d);
- mtdcr(DCRN_PEGPL_OMR1BAL(PCIE0), hose->mem_space.start);
- mtdcr(DCRN_PEGPL_OMR1MSKH(PCIE0), 0x7fffffff);
- mtdcr(DCRN_PEGPL_OMR1MSKL(PCIE0),
- ~(hose->mem_space.end - hose->mem_space.start) | 3);
- break;
- case 1:
- mtdcr(DCRN_PEGPL_OMR1BAH(PCIE1), 0x0000000d);
- mtdcr(DCRN_PEGPL_OMR1BAL(PCIE1), hose->mem_space.start);
- mtdcr(DCRN_PEGPL_OMR1MSKH(PCIE1), 0x7fffffff);
- mtdcr(DCRN_PEGPL_OMR1MSKL(PCIE1),
- ~(hose->mem_space.end - hose->mem_space.start) | 3);
-
- break;
- case 2:
- mtdcr(DCRN_PEGPL_OMR1BAH(PCIE2), 0x0000000d);
- mtdcr(DCRN_PEGPL_OMR1BAL(PCIE2), hose->mem_space.start);
- mtdcr(DCRN_PEGPL_OMR1MSKH(PCIE2), 0x7fffffff);
- mtdcr(DCRN_PEGPL_OMR1MSKL(PCIE2),
- ~(hose->mem_space.end - hose->mem_space.start) | 3);
- break;
- }
-
- /* Set up 16GB 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_PIM0LAL, 0);
- out_le32(mbase + PECFG_PIM0LAH, 0);
- out_le32(mbase + PECFG_PIMEN, 0x1);
-
- /* Enable I/O, Mem, and Busmaster cycles */
- out_le16(mbase + PCI_COMMAND,
- in_le16(mbase + PCI_COMMAND) |
- PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER);
-
- iounmap(mbase);
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-12 11:19:23 +0000