/*
- * MPC86XX pci setup code
+ * MPC85xx/86xx PCI/PCIE support routing.
*
- * Recode: ZHANG WEI <wei.zhang@freescale.com>
- * Initial author: Xianghua Xiao <x.xiao@freescale.com>
+ * Copyright 2007 Freescale Semiconductor, Inc
*
- * Copyright 2006 Freescale Semiconductor Inc.
+ * Initial author: Xianghua Xiao <x.xiao@freescale.com>
+ * Recode: ZHANG WEI <wei.zhang@freescale.com>
+ * Rewrite the routing for Frescale PCI and PCI Express
+ * Roy Zang <tie-fei.zang@freescale.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/types.h>
-#include <linux/module.h>
-#include <linux/init.h>
+#include <linux/kernel.h>
#include <linux/pci.h>
-#include <linux/serial.h>
+#include <linux/delay.h>
+#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/bootmem.h>
-#include <asm/system.h>
-#include <asm/atomic.h>
#include <asm/io.h>
#include <asm/prom.h>
#include <asm/pci-bridge.h>
+#include <asm/machdep.h>
#include <sysdev/fsl_soc.h>
#include <sysdev/fsl_pci.h>
-#include "../platforms/86xx/mpc86xx.h"
-
-#undef DEBUG
-
-#ifdef DEBUG
-#define DBG(fmt, args...) printk(KERN_ERR "%s: " fmt, __FUNCTION__, ## args)
-#else
-#define DBG(fmt, args...)
-#endif
-
-struct pcie_outbound_window_regs {
- uint pexotar; /* 0x.0 - PCI Express outbound translation address register */
- uint pexotear; /* 0x.4 - PCI Express outbound translation extended address register */
- uint pexowbar; /* 0x.8 - PCI Express outbound window base address register */
- char res1[4];
- uint pexowar; /* 0x.10 - PCI Express outbound window attributes register */
- char res2[12];
-};
-
-struct pcie_inbound_window_regs {
- uint pexitar; /* 0x.0 - PCI Express inbound translation address register */
- char res1[4];
- uint pexiwbar; /* 0x.8 - PCI Express inbound window base address register */
- uint pexiwbear; /* 0x.c - PCI Express inbound window base extended address register */
- uint pexiwar; /* 0x.10 - PCI Express inbound window attributes register */
- char res2[12];
-};
-
-static void __init setup_pcie_atmu(struct pci_controller *hose, struct resource *rsrc)
+/* atmu setup for fsl pci/pcie controller */
+void __init setup_pci_atmu(struct pci_controller *hose, struct resource *rsrc)
{
- volatile struct ccsr_pex *pcie;
- volatile struct pcie_outbound_window_regs *pcieow;
- volatile struct pcie_inbound_window_regs *pcieiw;
- int i = 0;
+ struct ccsr_pci __iomem *pci;
+ int i;
- DBG("PCIE memory map start 0x%x, size 0x%x\n", rsrc->start,
+ pr_debug("PCI memory map start 0x%x, size 0x%x\n", rsrc->start,
rsrc->end - rsrc->start + 1);
- pcie = ioremap(rsrc->start, rsrc->end - rsrc->start + 1);
-
- /* Disable all windows (except pexowar0 since its ignored) */
- pcie->pexowar1 = 0;
- pcie->pexowar2 = 0;
- pcie->pexowar3 = 0;
- pcie->pexowar4 = 0;
- pcie->pexiwar1 = 0;
- pcie->pexiwar2 = 0;
- pcie->pexiwar3 = 0;
-
- pcieow = (struct pcie_outbound_window_regs *)&pcie->pexotar1;
- pcieiw = (struct pcie_inbound_window_regs *)&pcie->pexitar1;
-
- /* Setup outbound MEM window */
- for(i = 0; i < 3; i++)
- if (hose->mem_resources[i].flags & IORESOURCE_MEM){
- DBG("PCIE MEM resource start 0x%08x, size 0x%08x.\n",
- hose->mem_resources[i].start,
- hose->mem_resources[i].end
- - hose->mem_resources[i].start + 1);
- pcieow->pexotar = (hose->mem_resources[i].start) >> 12
- & 0x000fffff;
- pcieow->pexotear = 0;
- pcieow->pexowbar = (hose->mem_resources[i].start) >> 12
- & 0x000fffff;
- /* Enable, Mem R/W */
- pcieow->pexowar = 0x80044000 |
- (__ilog2(hose->mem_resources[i].end
- - hose->mem_resources[i].start + 1)
- - 1);
- pcieow++;
- }
-
- /* Setup outbound IO window */
- if (hose->io_resource.flags & IORESOURCE_IO){
- DBG("PCIE IO resource start 0x%08x, size 0x%08x, phy base 0x%08x.\n",
- hose->io_resource.start,
- hose->io_resource.end - hose->io_resource.start + 1,
- hose->io_base_phys);
- pcieow->pexotar = (hose->io_resource.start) >> 12 & 0x000fffff;
- pcieow->pexotear = 0;
- pcieow->pexowbar = (hose->io_base_phys) >> 12 & 0x000fffff;
- /* Enable, IO R/W */
- pcieow->pexowar = 0x80088000 | (__ilog2(hose->io_resource.end
- - hose->io_resource.start + 1) - 1);
- }
-
- /* Setup 2G inbound Memory Window @ 0 */
- pcieiw->pexitar = 0x00000000;
- pcieiw->pexiwbar = 0x00000000;
- /* Enable, Prefetch, Local Mem, Snoop R/W, 2G */
- pcieiw->pexiwar = 0xa0f5501e;
+ pci = ioremap(rsrc->start, rsrc->end - rsrc->start + 1);
+
+ /* Disable all windows (except powar0 since its ignored) */
+ for(i = 1; i < 5; i++)
+ out_be32(&pci->pow[i].powar, 0);
+ for(i = 0; i < 3; i++)
+ out_be32(&pci->piw[i].piwar, 0);
+
+ /* Setup outbound MEM window */
+ for(i = 0; i < 3; i++)
+ if (hose->mem_resources[i].flags & IORESOURCE_MEM){
+ pr_debug("PCI MEM resource start 0x%08x, size 0x%08x.\n",
+ hose->mem_resources[i].start,
+ hose->mem_resources[i].end
+ - hose->mem_resources[i].start + 1);
+ out_be32(&pci->pow[i+1].potar,
+ (hose->mem_resources[i].start >> 12)
+ & 0x000fffff);
+ out_be32(&pci->pow[i+1].potear, 0);
+ out_be32(&pci->pow[i+1].powbar,
+ (hose->mem_resources[i].start >> 12)
+ & 0x000fffff);
+ /* Enable, Mem R/W */
+ out_be32(&pci->pow[i+1].powar, 0x80044000
+ | (__ilog2(hose->mem_resources[i].end
+ - hose->mem_resources[i].start + 1) - 1));
+ }
+
+ /* Setup outbound IO window */
+ if (hose->io_resource.flags & IORESOURCE_IO){
+ pr_debug("PCI IO resource start 0x%08x, size 0x%08x, phy base 0x%08x.\n",
+ hose->io_resource.start,
+ hose->io_resource.end - hose->io_resource.start + 1,
+ hose->io_base_phys);
+ out_be32(&pci->pow[i+1].potar, (hose->io_resource.start >> 12)
+ & 0x000fffff);
+ out_be32(&pci->pow[i+1].potear, 0);
+ out_be32(&pci->pow[i+1].powbar, (hose->io_base_phys >> 12)
+ & 0x000fffff);
+ /* Enable, IO R/W */
+ out_be32(&pci->pow[i+1].powar, 0x80088000
+ | (__ilog2(hose->io_resource.end
+ - hose->io_resource.start + 1) - 1));
+ }
+
+ /* Setup 2G inbound Memory Window @ 1 */
+ out_be32(&pci->piw[2].pitar, 0x00000000);
+ out_be32(&pci->piw[2].piwbar,0x00000000);
+ out_be32(&pci->piw[2].piwar, PIWAR_2G);
}
-static void __init
-mpc86xx_setup_pcie(struct pci_controller *hose, u32 pcie_offset, u32 pcie_size)
+void __init setup_pci_cmd(struct pci_controller *hose)
{
u16 cmd;
-
- DBG("PCIE host controller register offset 0x%08x, size 0x%08x.\n",
- pcie_offset, pcie_size);
-
early_read_config_word(hose, 0, 0, PCI_COMMAND, &cmd);
cmd |= PCI_COMMAND_SERR | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY
- | PCI_COMMAND_IO;
+ | PCI_COMMAND_IO;
early_write_config_word(hose, 0, 0, PCI_COMMAND, cmd);
-
early_write_config_byte(hose, 0, 0, PCI_LATENCY_TIMER, 0x80);
}
}
}
+int __init fsl_pcie_check_link(struct pci_controller *hose)
+{
+ u16 val;
+ early_read_config_word(hose, 0, 0, PCIE_LTSSM, &val);
+ if (val < PCIE_LTSSM_L0)
+ return 1;
+ return 0;
+}
-DECLARE_PCI_FIXUP_EARLY(0x1957, 0x7010, quirk_fsl_pcie_transparent);
-DECLARE_PCI_FIXUP_EARLY(0x1957, 0x7011, quirk_fsl_pcie_transparent);
-
-#define PCIE_LTSSM 0x404 /* PCIe Link Training and Status */
-#define PCIE_LTSSM_L0 0x16 /* L0 state */
-
-int __init mpc86xx_add_bridge(struct device_node *dev)
+int __init fsl_add_bridge(struct device_node *dev, int is_primary)
{
int len;
struct pci_controller *hose;
struct resource rsrc;
const int *bus_range;
- int has_address = 0;
- int primary = 0;
- u16 val;
- DBG("Adding PCIE host bridge %s\n", dev->full_name);
+ pr_debug("Adding PCI host bridge %s\n", dev->full_name);
/* Fetch host bridge registers address */
- has_address = (of_address_to_resource(dev, 0, &rsrc) == 0);
+ if (of_address_to_resource(dev, 0, &rsrc)) {
+ printk(KERN_WARNING "Can't get pci register base!");
+ return -ENOMEM;
+ }
/* Get bus range if any */
bus_range = of_get_property(dev, "bus-range", &len);
if (bus_range == NULL || len < 2 * sizeof(int))
printk(KERN_WARNING "Can't get bus-range for %s, assume"
- " bus 0\n", dev->full_name);
+ " bus 0\n", dev->full_name);
pci_assign_all_buses = 1;
hose = pcibios_alloc_controller(dev);
if (!hose)
return -ENOMEM;
- hose->indirect_type = PPC_INDIRECT_TYPE_EXT_REG |
- PPC_INDIRECT_TYPE_SURPRESS_PRIMARY_BUS;
-
hose->first_busno = bus_range ? bus_range[0] : 0x0;
hose->last_busno = bus_range ? bus_range[1] : 0xff;
- setup_indirect_pci(hose, rsrc.start, rsrc.start + 0x4);
-
- /* Probe the hose link training status */
- early_read_config_word(hose, 0, 0, PCIE_LTSSM, &val);
- if (val < PCIE_LTSSM_L0)
- return -ENXIO;
+ /* check PCI express bridge */
+ if (of_device_is_compatible(dev, "fsl,mpc8548-pcie") ||
+ of_device_is_compatible(dev, "fsl,mpc8641-pcie"))
+ hose->indirect_type = PPC_INDIRECT_TYPE_EXT_REG |
+ PPC_INDIRECT_TYPE_SURPRESS_PRIMARY_BUS;
- /* Setup the PCIE host controller. */
- mpc86xx_setup_pcie(hose, rsrc.start, rsrc.end - rsrc.start + 1);
+ setup_indirect_pci(hose, rsrc.start, rsrc.start + 0x4);
+ setup_pci_cmd(hose);
- if ((rsrc.start & 0xfffff) == 0x8000)
- primary = 1;
+ /* check PCI express link status */
+ if (of_device_is_compatible(dev, "fsl,mpc8548-pcie") ||
+ of_device_is_compatible(dev, "fsl,mpc8641-pcie"))
+ if (fsl_pcie_check_link(hose))
+ return -ENXIO;
- printk(KERN_INFO "Found MPC86xx PCIE host bridge at 0x%08lx. "
- "Firmware bus number: %d->%d\n",
- (unsigned long) rsrc.start,
- hose->first_busno, hose->last_busno);
+ 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);
/* Interpret the "ranges" property */
/* 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_pcie_atmu(hose, &rsrc);
+ setup_pci_atmu(hose, &rsrc);
return 0;
}
+
+DECLARE_PCI_FIXUP_EARLY(0x1957, 0x7010, quirk_fsl_pcie_transparent);
+DECLARE_PCI_FIXUP_EARLY(0x1957, 0x7011, quirk_fsl_pcie_transparent);
*/
#ifdef __KERNEL__
-#ifndef __POWERPC_FSL_PCIE_H
-#define __POWERPC_FSL_PCIE_H
+#ifndef __POWERPC_FSL_PCI_H
+#define __POWERPC_FSL_PCI_H
-/* PCIE Express IO block registers in 85xx/86xx */
+#define PCIE_LTSSM 0x0404 /* PCIE Link Training and Status */
+#define PCIE_LTSSM_L0 0x16 /* L0 state */
+#define PIWAR_2G 0xa0f5501e /* Enable, Prefetch, Local Mem, Snoop R/W, 2G */
-struct ccsr_pex {
- __be32 __iomem pex_config_addr; /* 0x.000 - PCI Express Configuration Address Register */
- __be32 __iomem pex_config_data; /* 0x.004 - PCI Express Configuration Data Register */
- u8 __iomem res1[4];
- __be32 __iomem pex_otb_cpl_tor; /* 0x.00c - PCI Express Outbound completion timeout register */
- __be32 __iomem pex_conf_tor; /* 0x.010 - PCI Express configuration timeout register */
- u8 __iomem res2[12];
- __be32 __iomem pex_pme_mes_dr; /* 0x.020 - PCI Express PME and message detect register */
- __be32 __iomem pex_pme_mes_disr; /* 0x.024 - PCI Express PME and message disable register */
- __be32 __iomem pex_pme_mes_ier; /* 0x.028 - PCI Express PME and message interrupt enable register */
- __be32 __iomem pex_pmcr; /* 0x.02c - PCI Express power management command register */
- u8 __iomem res3[3024];
- __be32 __iomem pexotar0; /* 0x.c00 - PCI Express outbound translation address register 0 */
- __be32 __iomem pexotear0; /* 0x.c04 - PCI Express outbound translation extended address register 0*/
- u8 __iomem res4[8];
- __be32 __iomem pexowar0; /* 0x.c10 - PCI Express outbound window attributes register 0*/
- u8 __iomem res5[12];
- __be32 __iomem pexotar1; /* 0x.c20 - PCI Express outbound translation address register 1 */
- __be32 __iomem pexotear1; /* 0x.c24 - PCI Express outbound translation extended address register 1*/
- __be32 __iomem pexowbar1; /* 0x.c28 - PCI Express outbound window base address register 1*/
- u8 __iomem res6[4];
- __be32 __iomem pexowar1; /* 0x.c30 - PCI Express outbound window attributes register 1*/
- u8 __iomem res7[12];
- __be32 __iomem pexotar2; /* 0x.c40 - PCI Express outbound translation address register 2 */
- __be32 __iomem pexotear2; /* 0x.c44 - PCI Express outbound translation extended address register 2*/
- __be32 __iomem pexowbar2; /* 0x.c48 - PCI Express outbound window base address register 2*/
- u8 __iomem res8[4];
- __be32 __iomem pexowar2; /* 0x.c50 - PCI Express outbound window attributes register 2*/
- u8 __iomem res9[12];
- __be32 __iomem pexotar3; /* 0x.c60 - PCI Express outbound translation address register 3 */
- __be32 __iomem pexotear3; /* 0x.c64 - PCI Express outbound translation extended address register 3*/
- __be32 __iomem pexowbar3; /* 0x.c68 - PCI Express outbound window base address register 3*/
- u8 __iomem res10[4];
- __be32 __iomem pexowar3; /* 0x.c70 - PCI Express outbound window attributes register 3*/
- u8 __iomem res11[12];
- __be32 __iomem pexotar4; /* 0x.c80 - PCI Express outbound translation address register 4 */
- __be32 __iomem pexotear4; /* 0x.c84 - PCI Express outbound translation extended address register 4*/
- __be32 __iomem pexowbar4; /* 0x.c88 - PCI Express outbound window base address register 4*/
- u8 __iomem res12[4];
- __be32 __iomem pexowar4; /* 0x.c90 - PCI Express outbound window attributes register 4*/
- u8 __iomem res13[12];
- u8 __iomem res14[256];
- __be32 __iomem pexitar3; /* 0x.da0 - PCI Express inbound translation address register 3 */
- u8 __iomem res15[4];
- __be32 __iomem pexiwbar3; /* 0x.da8 - PCI Express inbound window base address register 3 */
- __be32 __iomem pexiwbear3; /* 0x.dac - PCI Express inbound window base extended address register 3 */
- __be32 __iomem pexiwar3; /* 0x.db0 - PCI Express inbound window attributes register 3 */
- u8 __iomem res16[12];
- __be32 __iomem pexitar2; /* 0x.dc0 - PCI Express inbound translation address register 2 */
- u8 __iomem res17[4];
- __be32 __iomem pexiwbar2; /* 0x.dc8 - PCI Express inbound window base address register 2 */
- __be32 __iomem pexiwbear2; /* 0x.dcc - PCI Express inbound window base extended address register 2 */
- __be32 __iomem pexiwar2; /* 0x.dd0 - PCI Express inbound window attributes register 2 */
- u8 __iomem res18[12];
- __be32 __iomem pexitar1; /* 0x.de0 - PCI Express inbound translation address register 2 */
- u8 __iomem res19[4];
- __be32 __iomem pexiwbar1; /* 0x.de8 - PCI Express inbound window base address register 2 */
- __be32 __iomem pexiwbear1; /* 0x.dec - PCI Express inbound window base extended address register 2 */
- __be32 __iomem pexiwar1; /* 0x.df0 - PCI Express inbound window attributes register 2 */
- u8 __iomem res20[12];
- __be32 __iomem pex_err_dr; /* 0x.e00 - PCI Express error detect register */
- u8 __iomem res21[4];
- __be32 __iomem pex_err_en; /* 0x.e08 - PCI Express error interrupt enable register */
- u8 __iomem res22[4];
- __be32 __iomem pex_err_disr; /* 0x.e10 - PCI Express error disable register */
- u8 __iomem res23[12];
- __be32 __iomem pex_err_cap_stat; /* 0x.e20 - PCI Express error capture status register */
- u8 __iomem res24[4];
- __be32 __iomem pex_err_cap_r0; /* 0x.e28 - PCI Express error capture register 0 */
- __be32 __iomem pex_err_cap_r1; /* 0x.e2c - PCI Express error capture register 0 */
- __be32 __iomem pex_err_cap_r2; /* 0x.e30 - PCI Express error capture register 0 */
- __be32 __iomem pex_err_cap_r3; /* 0x.e34 - PCI Express error capture register 0 */
+/* PCI/PCI Express outbound window reg */
+struct pci_outbound_window_regs {
+ __be32 potar; /* 0x.0 - Outbound translation address register */
+ __be32 potear; /* 0x.4 - Outbound translation extended address register */
+ __be32 powbar; /* 0x.8 - Outbound window base address register */
+ u8 res1[4];
+ __be32 powar; /* 0x.10 - Outbound window attributes register */
+ u8 res2[12];
};
-#endif /* __POWERPC_FSL_PCIE_H */
+/* PCI/PCI Express inbound window reg */
+struct pci_inbound_window_regs {
+ __be32 pitar; /* 0x.0 - Inbound translation address register */
+ u8 res1[4];
+ __be32 piwbar; /* 0x.8 - Inbound window base address register */
+ __be32 piwbear; /* 0x.c - Inbound window base extended address register */
+ __be32 piwar; /* 0x.10 - Inbound window attributes register */
+ u8 res2[12];
+};
+
+/* PCI/PCI Express IO block registers for 85xx/86xx */
+struct ccsr_pci {
+ __be32 config_addr; /* 0x.000 - PCI/PCIE Configuration Address Register */
+ __be32 config_data; /* 0x.004 - PCI/PCIE Configuration Data Register */
+ __be32 int_ack; /* 0x.008 - PCI Interrupt Acknowledge Register */
+ __be32 pex_otb_cpl_tor; /* 0x.00c - PCIE Outbound completion timeout register */
+ __be32 pex_conf_tor; /* 0x.010 - PCIE configuration timeout register */
+ u8 res2[12];
+ __be32 pex_pme_mes_dr; /* 0x.020 - PCIE PME and message detect register */
+ __be32 pex_pme_mes_disr; /* 0x.024 - PCIE PME and message disable register */
+ __be32 pex_pme_mes_ier; /* 0x.028 - PCIE PME and message interrupt enable register */
+ __be32 pex_pmcr; /* 0x.02c - PCIE power management command register */
+ u8 res3[3024];
+
+/* PCI/PCI Express outbound window 0-4
+ * Window 0 is the default window and is the only window enabled upon reset.
+ * The default outbound register set is used when a transaction misses
+ * in all of the other outbound windows.
+ */
+ struct pci_outbound_window_regs pow[5];
+
+ u8 res14[256];
+
+/* PCI/PCI Express inbound window 3-1
+ * inbound window 1 supports only a 32-bit base address and does not
+ * define an inbound window base extended address register.
+ */
+ struct pci_inbound_window_regs piw[3];
+
+ __be32 pex_err_dr; /* 0x.e00 - PCI/PCIE error detect register */
+ u8 res21[4];
+ __be32 pex_err_en; /* 0x.e08 - PCI/PCIE error interrupt enable register */
+ u8 res22[4];
+ __be32 pex_err_disr; /* 0x.e10 - PCI/PCIE error disable register */
+ u8 res23[12];
+ __be32 pex_err_cap_stat; /* 0x.e20 - PCI/PCIE error capture status register */
+ u8 res24[4];
+ __be32 pex_err_cap_r0; /* 0x.e28 - PCIE error capture register 0 */
+ __be32 pex_err_cap_r1; /* 0x.e2c - PCIE error capture register 0 */
+ __be32 pex_err_cap_r2; /* 0x.e30 - PCIE error capture register 0 */
+ __be32 pex_err_cap_r3; /* 0x.e34 - PCIE error capture register 0 */
+};
+
+extern int fsl_add_bridge(struct device_node *dev, int is_primary);
+
+#endif /* __POWERPC_FSL_PCI_H */
#endif /* __KERNEL__ */
projects / kernel / kernel-generic.git / commitdiff