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@@ -1,136 +1,98 @@
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/*
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/*
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- * MPC86XX pci setup code
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+ * MPC85xx/86xx PCI/PCIE support routing.
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*
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*
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- * Recode: ZHANG WEI <wei.zhang@freescale.com>
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- * Initial author: Xianghua Xiao <x.xiao@freescale.com>
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+ * Copyright 2007 Freescale Semiconductor, Inc
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*
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*
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- * Copyright 2006 Freescale Semiconductor Inc.
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+ * Initial author: Xianghua Xiao <x.xiao@freescale.com>
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+ * Recode: ZHANG WEI <wei.zhang@freescale.com>
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+ * Rewrite the routing for Frescale PCI and PCI Express
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+ * Roy Zang <tie-fei.zang@freescale.com>
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*
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*
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* This program is free software; you can redistribute it and/or modify it
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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* option) any later version.
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*/
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*/
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-
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-#include <linux/types.h>
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-#include <linux/module.h>
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-#include <linux/init.h>
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+#include <linux/kernel.h>
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#include <linux/pci.h>
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#include <linux/pci.h>
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-#include <linux/serial.h>
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+#include <linux/delay.h>
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+#include <linux/string.h>
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+#include <linux/init.h>
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+#include <linux/bootmem.h>
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-#include <asm/system.h>
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-#include <asm/atomic.h>
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#include <asm/io.h>
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#include <asm/io.h>
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#include <asm/prom.h>
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#include <asm/prom.h>
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#include <asm/pci-bridge.h>
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#include <asm/pci-bridge.h>
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+#include <asm/machdep.h>
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#include <sysdev/fsl_soc.h>
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#include <sysdev/fsl_soc.h>
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#include <sysdev/fsl_pci.h>
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#include <sysdev/fsl_pci.h>
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-#include "../platforms/86xx/mpc86xx.h"
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-
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-#undef DEBUG
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-
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-#ifdef DEBUG
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-#define DBG(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args)
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-#else
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-#define DBG(fmt, args...)
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-#endif
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-
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-struct pcie_outbound_window_regs {
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- uint pexotar; /* 0x.0 - PCI Express outbound translation address register */
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- uint pexotear; /* 0x.4 - PCI Express outbound translation extended address register */
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- uint pexowbar; /* 0x.8 - PCI Express outbound window base address register */
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- char res1[4];
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- uint pexowar; /* 0x.10 - PCI Express outbound window attributes register */
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- char res2[12];
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-};
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-
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-struct pcie_inbound_window_regs {
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- uint pexitar; /* 0x.0 - PCI Express inbound translation address register */
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- char res1[4];
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- uint pexiwbar; /* 0x.8 - PCI Express inbound window base address register */
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- uint pexiwbear; /* 0x.c - PCI Express inbound window base extended address register */
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- uint pexiwar; /* 0x.10 - PCI Express inbound window attributes register */
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- char res2[12];
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-};
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-
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-static void __init setup_pcie_atmu(struct pci_controller *hose, struct resource *rsrc)
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+/* atmu setup for fsl pci/pcie controller */
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+void __init setup_pci_atmu(struct pci_controller *hose, struct resource *rsrc)
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{
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{
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- volatile struct ccsr_pex *pcie;
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- volatile struct pcie_outbound_window_regs *pcieow;
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- volatile struct pcie_inbound_window_regs *pcieiw;
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- int i = 0;
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+ struct ccsr_pci __iomem *pci;
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+ int i;
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- DBG("PCIE memory map start 0x%x, size 0x%x\n", rsrc->start,
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+ pr_debug("PCI memory map start 0x%x, size 0x%x\n", rsrc->start,
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rsrc->end - rsrc->start + 1);
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rsrc->end - rsrc->start + 1);
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- pcie = ioremap(rsrc->start, rsrc->end - rsrc->start + 1);
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-
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- /* Disable all windows (except pexowar0 since its ignored) */
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- pcie->pexowar1 = 0;
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- pcie->pexowar2 = 0;
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- pcie->pexowar3 = 0;
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- pcie->pexowar4 = 0;
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- pcie->pexiwar1 = 0;
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- pcie->pexiwar2 = 0;
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- pcie->pexiwar3 = 0;
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-
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- pcieow = (struct pcie_outbound_window_regs *)&pcie->pexotar1;
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- pcieiw = (struct pcie_inbound_window_regs *)&pcie->pexitar1;
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-
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- /* Setup outbound MEM window */
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- for(i = 0; i < 3; i++)
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- if (hose->mem_resources[i].flags & IORESOURCE_MEM){
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- DBG("PCIE MEM resource start 0x%08x, size 0x%08x.\n",
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- hose->mem_resources[i].start,
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- hose->mem_resources[i].end
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- - hose->mem_resources[i].start + 1);
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- pcieow->pexotar = (hose->mem_resources[i].start) >> 12
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- & 0x000fffff;
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- pcieow->pexotear = 0;
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- pcieow->pexowbar = (hose->mem_resources[i].start) >> 12
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- & 0x000fffff;
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- /* Enable, Mem R/W */
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- pcieow->pexowar = 0x80044000 |
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- (__ilog2(hose->mem_resources[i].end
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- - hose->mem_resources[i].start + 1)
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- - 1);
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- pcieow++;
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- }
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-
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- /* Setup outbound IO window */
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- if (hose->io_resource.flags & IORESOURCE_IO){
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- DBG("PCIE IO resource start 0x%08x, size 0x%08x, phy base 0x%08x.\n",
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- hose->io_resource.start,
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- hose->io_resource.end - hose->io_resource.start + 1,
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- hose->io_base_phys);
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- pcieow->pexotar = (hose->io_resource.start) >> 12 & 0x000fffff;
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- pcieow->pexotear = 0;
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- pcieow->pexowbar = (hose->io_base_phys) >> 12 & 0x000fffff;
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- /* Enable, IO R/W */
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- pcieow->pexowar = 0x80088000 | (__ilog2(hose->io_resource.end
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- - hose->io_resource.start + 1) - 1);
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- }
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-
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- /* Setup 2G inbound Memory Window @ 0 */
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- pcieiw->pexitar = 0x00000000;
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- pcieiw->pexiwbar = 0x00000000;
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- /* Enable, Prefetch, Local Mem, Snoop R/W, 2G */
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- pcieiw->pexiwar = 0xa0f5501e;
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+ pci = ioremap(rsrc->start, rsrc->end - rsrc->start + 1);
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+
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+ /* Disable all windows (except powar0 since its ignored) */
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+ for(i = 1; i < 5; i++)
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+ out_be32(&pci->pow[i].powar, 0);
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+ for(i = 0; i < 3; i++)
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+ out_be32(&pci->piw[i].piwar, 0);
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+
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+ /* Setup outbound MEM window */
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+ for(i = 0; i < 3; i++)
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+ if (hose->mem_resources[i].flags & IORESOURCE_MEM){
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+ pr_debug("PCI MEM resource start 0x%08x, size 0x%08x.\n",
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+ hose->mem_resources[i].start,
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+ hose->mem_resources[i].end
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+ - hose->mem_resources[i].start + 1);
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+ out_be32(&pci->pow[i+1].potar,
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+ (hose->mem_resources[i].start >> 12)
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+ & 0x000fffff);
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+ out_be32(&pci->pow[i+1].potear, 0);
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+ out_be32(&pci->pow[i+1].powbar,
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+ (hose->mem_resources[i].start >> 12)
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+ & 0x000fffff);
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+ /* Enable, Mem R/W */
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+ out_be32(&pci->pow[i+1].powar, 0x80044000
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+ | (__ilog2(hose->mem_resources[i].end
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+ - hose->mem_resources[i].start + 1) - 1));
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+ }
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+
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+ /* Setup outbound IO window */
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+ if (hose->io_resource.flags & IORESOURCE_IO){
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+ pr_debug("PCI IO resource start 0x%08x, size 0x%08x, phy base 0x%08x.\n",
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+ hose->io_resource.start,
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+ hose->io_resource.end - hose->io_resource.start + 1,
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+ hose->io_base_phys);
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+ out_be32(&pci->pow[i+1].potar, (hose->io_resource.start >> 12)
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+ & 0x000fffff);
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+ out_be32(&pci->pow[i+1].potear, 0);
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+ out_be32(&pci->pow[i+1].powbar, (hose->io_base_phys >> 12)
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+ & 0x000fffff);
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+ /* Enable, IO R/W */
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+ out_be32(&pci->pow[i+1].powar, 0x80088000
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+ | (__ilog2(hose->io_resource.end
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+ - hose->io_resource.start + 1) - 1));
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+ }
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+
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+ /* Setup 2G inbound Memory Window @ 1 */
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+ out_be32(&pci->piw[2].pitar, 0x00000000);
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+ out_be32(&pci->piw[2].piwbar,0x00000000);
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+ out_be32(&pci->piw[2].piwar, PIWAR_2G);
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}
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}
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-static void __init
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-mpc86xx_setup_pcie(struct pci_controller *hose, u32 pcie_offset, u32 pcie_size)
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+void __init setup_pci_cmd(struct pci_controller *hose)
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{
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{
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u16 cmd;
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u16 cmd;
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-
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- DBG("PCIE host controller register offset 0x%08x, size 0x%08x.\n",
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- pcie_offset, pcie_size);
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-
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early_read_config_word(hose, 0, 0, PCI_COMMAND, &cmd);
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early_read_config_word(hose, 0, 0, PCI_COMMAND, &cmd);
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cmd |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY
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cmd |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY
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- | PCI_COMMAND_IO;
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+ | PCI_COMMAND_IO;
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early_write_config_word(hose, 0, 0, PCI_COMMAND, cmd);
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early_write_config_word(hose, 0, 0, PCI_COMMAND, cmd);
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-
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early_write_config_byte(hose, 0, 0, PCI_LATENCY_TIMER, 0x80);
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early_write_config_byte(hose, 0, 0, PCI_LATENCY_TIMER, 0x80);
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}
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}
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@@ -167,72 +129,76 @@ static void __devinit quirk_fsl_pcie_transparent(struct pci_dev *dev)
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}
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}
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}
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}
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+int __init fsl_pcie_check_link(struct pci_controller *hose)
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+{
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+ u16 val;
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+ early_read_config_word(hose, 0, 0, PCIE_LTSSM, &val);
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+ if (val < PCIE_LTSSM_L0)
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+ return 1;
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+ return 0;
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+}
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-DECLARE_PCI_FIXUP_EARLY(0x1957, 0x7010, quirk_fsl_pcie_transparent);
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-DECLARE_PCI_FIXUP_EARLY(0x1957, 0x7011, quirk_fsl_pcie_transparent);
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-
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-#define PCIE_LTSSM 0x404 /* PCIe Link Training and Status */
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-#define PCIE_LTSSM_L0 0x16 /* L0 state */
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-
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-int __init mpc86xx_add_bridge(struct device_node *dev)
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+int __init fsl_add_bridge(struct device_node *dev, int is_primary)
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{
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{
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int len;
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int len;
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struct pci_controller *hose;
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struct pci_controller *hose;
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struct resource rsrc;
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struct resource rsrc;
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const int *bus_range;
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const int *bus_range;
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- int has_address = 0;
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- int primary = 0;
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- u16 val;
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- DBG("Adding PCIE host bridge %s\n", dev->full_name);
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+ pr_debug("Adding PCI host bridge %s\n", dev->full_name);
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/* Fetch host bridge registers address */
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/* Fetch host bridge registers address */
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- has_address = (of_address_to_resource(dev, 0, &rsrc) == 0);
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+ if (of_address_to_resource(dev, 0, &rsrc)) {
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+ printk(KERN_WARNING "Can't get pci register base!");
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+ return -ENOMEM;
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+ }
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/* Get bus range if any */
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/* Get bus range if any */
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bus_range = of_get_property(dev, "bus-range", &len);
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bus_range = of_get_property(dev, "bus-range", &len);
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if (bus_range == NULL || len < 2 * sizeof(int))
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if (bus_range == NULL || len < 2 * sizeof(int))
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printk(KERN_WARNING "Can't get bus-range for %s, assume"
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printk(KERN_WARNING "Can't get bus-range for %s, assume"
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- " bus 0\n", dev->full_name);
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+ " bus 0\n", dev->full_name);
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pci_assign_all_buses = 1;
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pci_assign_all_buses = 1;
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hose = pcibios_alloc_controller(dev);
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hose = pcibios_alloc_controller(dev);
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if (!hose)
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if (!hose)
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return -ENOMEM;
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return -ENOMEM;
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- hose->indirect_type = PPC_INDIRECT_TYPE_EXT_REG |
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- PPC_INDIRECT_TYPE_SURPRESS_PRIMARY_BUS;
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-
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hose->first_busno = bus_range ? bus_range[0] : 0x0;
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hose->first_busno = bus_range ? bus_range[0] : 0x0;
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hose->last_busno = bus_range ? bus_range[1] : 0xff;
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hose->last_busno = bus_range ? bus_range[1] : 0xff;
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- setup_indirect_pci(hose, rsrc.start, rsrc.start + 0x4);
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-
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- /* Probe the hose link training status */
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- early_read_config_word(hose, 0, 0, PCIE_LTSSM, &val);
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- if (val < PCIE_LTSSM_L0)
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- return -ENXIO;
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+ /* check PCI express bridge */
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+ if (of_device_is_compatible(dev, "fsl,mpc8548-pcie") ||
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+ of_device_is_compatible(dev, "fsl,mpc8641-pcie"))
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+ hose->indirect_type = PPC_INDIRECT_TYPE_EXT_REG |
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+ PPC_INDIRECT_TYPE_SURPRESS_PRIMARY_BUS;
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- /* Setup the PCIE host controller. */
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- mpc86xx_setup_pcie(hose, rsrc.start, rsrc.end - rsrc.start + 1);
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+ setup_indirect_pci(hose, rsrc.start, rsrc.start + 0x4);
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+ setup_pci_cmd(hose);
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- if ((rsrc.start & 0xfffff) == 0x8000)
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- primary = 1;
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+ /* check PCI express link status */
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+ if (of_device_is_compatible(dev, "fsl,mpc8548-pcie") ||
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+ of_device_is_compatible(dev, "fsl,mpc8641-pcie"))
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+ if (fsl_pcie_check_link(hose))
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+ return -ENXIO;
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- printk(KERN_INFO "Found MPC86xx PCIE host bridge at 0x%08lx. "
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- "Firmware bus number: %d->%d\n",
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- (unsigned long) rsrc.start,
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- hose->first_busno, hose->last_busno);
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+ printk(KERN_INFO "Found FSL PCI host bridge at 0x%016llx."
|
|
|
|
+ "Firmware bus number: %d->%d\n",
|
|
|
|
+ (unsigned long long)rsrc.start, hose->first_busno,
|
|
|
|
+ hose->last_busno);
|
|
|
|
|
|
- DBG(" ->Hose at 0x%p, cfg_addr=0x%p,cfg_data=0x%p\n",
|
|
|
|
|
|
+ pr_debug(" ->Hose at 0x%p, cfg_addr=0x%p,cfg_data=0x%p\n",
|
|
hose, hose->cfg_addr, hose->cfg_data);
|
|
hose, hose->cfg_addr, hose->cfg_data);
|
|
|
|
|
|
/* Interpret the "ranges" property */
|
|
/* Interpret the "ranges" property */
|
|
/* This also maps the I/O region and sets isa_io/mem_base */
|
|
/* This also maps the I/O region and sets isa_io/mem_base */
|
|
- pci_process_bridge_OF_ranges(hose, dev, primary);
|
|
|
|
|
|
+ pci_process_bridge_OF_ranges(hose, dev, is_primary);
|
|
|
|
|
|
/* Setup PEX window registers */
|
|
/* Setup PEX window registers */
|
|
- setup_pcie_atmu(hose, &rsrc);
|
|
|
|
|
|
+ setup_pci_atmu(hose, &rsrc);
|
|
|
|
|
|
return 0;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
+
|
|
|
|
+DECLARE_PCI_FIXUP_EARLY(0x1957, 0x7010, quirk_fsl_pcie_transparent);
|
|
|
|
+DECLARE_PCI_FIXUP_EARLY(0x1957, 0x7011, quirk_fsl_pcie_transparent);
|