arch/powerpc/platforms/cell/setup.c - kernel/msm-4.9 - Gitiles

 /*
  *  linux/arch/powerpc/platforms/cell/cell_setup.c
  *
  *  Copyright (C) 1995  Linus Torvalds
  *  Adapted from 'alpha' version by Gary Thomas
  *  Modified by Cort Dougan (cort@cs.nmt.edu)
  *  Modified by PPC64 Team, IBM Corp
  *  Modified by Cell Team, IBM Deutschland Entwicklung GmbH
  *
  * 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.
  */
 #undef DEBUG

 #include <linux/sched.h>
 #include <linux/kernel.h>
 #include <linux/mm.h>
 #include <linux/stddef.h>
 #include <linux/unistd.h>
 #include <linux/user.h>
 #include <linux/reboot.h>
 #include <linux/init.h>
 #include <linux/delay.h>
 #include <linux/irq.h>
 #include <linux/seq_file.h>
 #include <linux/root_dev.h>
 #include <linux/console.h>
 #include <linux/mutex.h>
 #include <linux/memory_hotplug.h>
 #include <linux/of_platform.h>

 #include <asm/mmu.h>
 #include <asm/processor.h>
 #include <asm/io.h>
 #include <asm/pgtable.h>
 #include <asm/prom.h>
 #include <asm/rtas.h>
 #include <asm/pci-bridge.h>
 #include <asm/iommu.h>
 #include <asm/dma.h>
 #include <asm/machdep.h>
 #include <asm/time.h>
 #include <asm/nvram.h>
 #include <asm/cputable.h>
 #include <asm/ppc-pci.h>
 #include <asm/irq.h>
 #include <asm/spu.h>
 #include <asm/spu_priv1.h>
 #include <asm/udbg.h>
 #include <asm/mpic.h>
 #include <asm/cell-regs.h>

 #include "interrupt.h"
 #include "pervasive.h"
 #include "ras.h"
 #include "io-workarounds.h"

 #ifdef DEBUG
 #define DBG(fmt...) udbg_printf(fmt)
 #else
 #define DBG(fmt...)
 #endif

 static void cell_show_cpuinfo(struct seq_file *m)
 {
 	struct device_node *root;
 	const char *model = "";

 	root = of_find_node_by_path("/");
 	if (root)
 		model = of_get_property(root, "model", NULL);
 	seq_printf(m, "machine\t\t: CHRP %s\n", model);
 	of_node_put(root);
 }

 static void cell_progress(char *s, unsigned short hex)
 {
 	printk("*** %04x : %s\n", hex, s ? s : "");
 }

 static void cell_fixup_pcie_rootcomplex(struct pci_dev *dev)
 {
 	struct pci_controller *hose;
 	const char *s;
 	int i;

 	if (!machine_is(cell))
 		return;

 	/* We're searching for a direct child of the PHB */
 	if (dev->bus->self != NULL || dev->devfn != 0)
 		return;

 	hose = pci_bus_to_host(dev->bus);
 	if (hose == NULL)
 		return;

 	/* Only on PCIE */
 	if (!of_device_is_compatible(hose->dn, "pciex"))
 		return;

 	/* And only on axon */
 	s = of_get_property(hose->dn, "model", NULL);
 	if (!s || strcmp(s, "Axon") != 0)
 		return;

 	for (i = 0; i < PCI_BRIDGE_RESOURCES; i++) {
 		dev->resource[i].start = dev->resource[i].end = 0;
 		dev->resource[i].flags = 0;
 	}

 	printk(KERN_DEBUG "PCI: Hiding resources on Axon PCIE RC %s\n",
 	       pci_name(dev));
 }
 DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, cell_fixup_pcie_rootcomplex);

 static int __devinit cell_setup_phb(struct pci_controller *phb)
 {
 	const char *model;
 	struct device_node *np;

 	int rc = rtas_setup_phb(phb);
 	if (rc)
 		return rc;

 	np = phb->dn;
 	model = of_get_property(np, "model", NULL);
 	if (model == NULL || strcmp(np->name, "pci"))
 		return 0;

 	/* Setup workarounds for spider */
 	if (strcmp(model, "Spider"))
 		return 0;

 	iowa_register_bus(phb, &spiderpci_ops, &spiderpci_iowa_init,
 				  (void *)SPIDER_PCI_REG_BASE);
 	io_workaround_init();

 	return 0;
 }

 static const struct of_device_id cell_bus_ids[] __initdata = {
 	{ .type = "soc", },
 	{ .compatible = "soc", },
 	{ .type = "spider", },
 	{ .type = "axon", },
 	{ .type = "plb5", },
 	{ .type = "plb4", },
 	{ .type = "opb", },
 	{ .type = "ebc", },
 	{},
 };

 static int __init cell_publish_devices(void)
 {
 	struct device_node *root = of_find_node_by_path("/");
 	struct device_node *np;
 	int node;

 	/* Publish OF platform devices for southbridge IOs */
 	of_platform_bus_probe(NULL, cell_bus_ids, NULL);

 	/* On spider based blades, we need to manually create the OF
 	 * platform devices for the PCI host bridges
 	 */
 	for_each_child_of_node(root, np) {
 		if (np->type == NULL || (strcmp(np->type, "pci") != 0 &&
 					 strcmp(np->type, "pciex") != 0))
 			continue;
 		of_platform_device_create(np, NULL, NULL);
 	}

 	/* There is no device for the MIC memory controller, thus we create
 	 * a platform device for it to attach the EDAC driver to.
 	 */
 	for_each_online_node(node) {
 		if (cbe_get_cpu_mic_tm_regs(cbe_node_to_cpu(node)) == NULL)
 			continue;
 		platform_device_register_simple("cbe-mic", node, NULL, 0);
 	}

 	return 0;
 }
 machine_subsys_initcall(cell, cell_publish_devices);

 static void cell_mpic_cascade(unsigned int irq, struct irq_desc *desc)
 {
 	struct irq_chip *chip = irq_desc_get_chip(desc);
 	struct mpic *mpic = irq_desc_get_handler_data(desc);
 	unsigned int virq;

 	virq = mpic_get_one_irq(mpic);
 	if (virq != NO_IRQ)
 		generic_handle_irq(virq);

 	chip->irq_eoi(&desc->irq_data);
 }

 static void __init mpic_init_IRQ(void)
 {
 	struct device_node *dn;
 	struct mpic *mpic;
 	unsigned int virq;

 	for (dn = NULL;
 	     (dn = of_find_node_by_name(dn, "interrupt-controller"));) {
 		if (!of_device_is_compatible(dn, "CBEA,platform-open-pic"))
 			continue;

 		/* The MPIC driver will get everything it needs from the
 		 * device-tree, just pass 0 to all arguments
 		 */
 		mpic = mpic_alloc(dn, 0, 0, 0, 0, " MPIC     ");
 		if (mpic == NULL)
 			continue;
 		mpic_init(mpic);

 		virq = irq_of_parse_and_map(dn, 0);
 		if (virq == NO_IRQ)
 			continue;

 		printk(KERN_INFO "%s : hooking up to IRQ %d\n",
 		       dn->full_name, virq);
 		irq_set_handler_data(virq, mpic);
 		irq_set_chained_handler(virq, cell_mpic_cascade);
 	}
 }


 static void __init cell_init_irq(void)
 {
 	iic_init_IRQ();
 	spider_init_IRQ();
 	mpic_init_IRQ();
 }

 static void __init cell_set_dabrx(void)
 {
 	mtspr(SPRN_DABRX, DABRX_KERNEL | DABRX_USER);
 }

 static void __init cell_setup_arch(void)
 {
 #ifdef CONFIG_SPU_BASE
 	spu_priv1_ops = &spu_priv1_mmio_ops;
 	spu_management_ops = &spu_management_of_ops;
 #endif

 	cbe_regs_init();

 	cell_set_dabrx();

 #ifdef CONFIG_CBE_RAS
 	cbe_ras_init();
 #endif

 #ifdef CONFIG_SMP
 	smp_init_cell();
 #endif
 	/* init to some ~sane value until calibrate_delay() runs */
 	loops_per_jiffy = 50000000;

 	/* Find and initialize PCI host bridges */
 	init_pci_config_tokens();

 	cbe_pervasive_init();
 #ifdef CONFIG_DUMMY_CONSOLE
 	conswitchp = &dummy_con;
 #endif

 	mmio_nvram_init();
 }

 static int __init cell_probe(void)
 {
 	unsigned long root = of_get_flat_dt_root();

 	if (!of_flat_dt_is_compatible(root, "IBM,CBEA") &&
 	    !of_flat_dt_is_compatible(root, "IBM,CPBW-1.0"))
 		return 0;

 	hpte_init_native();

 	return 1;
 }

 define_machine(cell) {
 	.name			= "Cell",
 	.probe			= cell_probe,
 	.setup_arch		= cell_setup_arch,
 	.show_cpuinfo		= cell_show_cpuinfo,
 	.restart		= rtas_restart,
 	.power_off		= rtas_power_off,
 	.halt			= rtas_halt,
 	.get_boot_time		= rtas_get_boot_time,
 	.get_rtc_time		= rtas_get_rtc_time,
 	.set_rtc_time		= rtas_set_rtc_time,
 	.calibrate_decr		= generic_calibrate_decr,
 	.progress		= cell_progress,
 	.init_IRQ       	= cell_init_irq,
 	.pci_setup_phb		= cell_setup_phb,
 };
	/*
	* linux/arch/powerpc/platforms/cell/cell_setup.c
	*
	* Copyright (C) 1995 Linus Torvalds
	* Adapted from 'alpha' version by Gary Thomas
	* Modified by Cort Dougan (cort@cs.nmt.edu)
	* Modified by PPC64 Team, IBM Corp
	* Modified by Cell Team, IBM Deutschland Entwicklung GmbH
	*
	* 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.
	*/
	#undef DEBUG

	#include <linux/sched.h>
	#include <linux/kernel.h>
	#include <linux/mm.h>
	#include <linux/stddef.h>
	#include <linux/unistd.h>
	#include <linux/user.h>
	#include <linux/reboot.h>
	#include <linux/init.h>
	#include <linux/delay.h>
	#include <linux/irq.h>
	#include <linux/seq_file.h>
	#include <linux/root_dev.h>
	#include <linux/console.h>
	#include <linux/mutex.h>
	#include <linux/memory_hotplug.h>
	#include <linux/of_platform.h>

	#include <asm/mmu.h>
	#include <asm/processor.h>
	#include <asm/io.h>
	#include <asm/pgtable.h>
	#include <asm/prom.h>
	#include <asm/rtas.h>
	#include <asm/pci-bridge.h>
	#include <asm/iommu.h>
	#include <asm/dma.h>
	#include <asm/machdep.h>
	#include <asm/time.h>
	#include <asm/nvram.h>
	#include <asm/cputable.h>
	#include <asm/ppc-pci.h>
	#include <asm/irq.h>
	#include <asm/spu.h>
	#include <asm/spu_priv1.h>
	#include <asm/udbg.h>
	#include <asm/mpic.h>
	#include <asm/cell-regs.h>

	#include "interrupt.h"
	#include "pervasive.h"
	#include "ras.h"
	#include "io-workarounds.h"

	#ifdef DEBUG
	#define DBG(fmt...) udbg_printf(fmt)
	#else
	#define DBG(fmt...)
	#endif

	static void cell_show_cpuinfo(struct seq_file *m)
	{
	struct device_node *root;
	const char *model = "";

	root = of_find_node_by_path("/");
	if (root)
	model = of_get_property(root, "model", NULL);
	seq_printf(m, "machine\t\t: CHRP %s\n", model);
	of_node_put(root);
	}

	static void cell_progress(char *s, unsigned short hex)
	{
	printk("*** %04x : %s\n", hex, s ? s : "");
	}

	static void cell_fixup_pcie_rootcomplex(struct pci_dev *dev)
	{
	struct pci_controller *hose;
	const char *s;
	int i;

	if (!machine_is(cell))
	return;

	/* We're searching for a direct child of the PHB */
	if (dev->bus->self != NULL \|\| dev->devfn != 0)
	return;

	hose = pci_bus_to_host(dev->bus);
	if (hose == NULL)
	return;

	/* Only on PCIE */
	if (!of_device_is_compatible(hose->dn, "pciex"))
	return;

	/* And only on axon */
	s = of_get_property(hose->dn, "model", NULL);
	if (!s \|\| strcmp(s, "Axon") != 0)
	return;

	for (i = 0; i < PCI_BRIDGE_RESOURCES; i++) {
	dev->resource[i].start = dev->resource[i].end = 0;
	dev->resource[i].flags = 0;
	}

	printk(KERN_DEBUG "PCI: Hiding resources on Axon PCIE RC %s\n",
	pci_name(dev));
	}
	DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, cell_fixup_pcie_rootcomplex);

	static int __devinit cell_setup_phb(struct pci_controller *phb)
	{
	const char *model;
	struct device_node *np;

	int rc = rtas_setup_phb(phb);
	if (rc)
	return rc;

	np = phb->dn;
	model = of_get_property(np, "model", NULL);
	if (model == NULL \|\| strcmp(np->name, "pci"))
	return 0;

	/* Setup workarounds for spider */
	if (strcmp(model, "Spider"))
	return 0;

	iowa_register_bus(phb, &spiderpci_ops, &spiderpci_iowa_init,
	(void *)SPIDER_PCI_REG_BASE);
	io_workaround_init();

	return 0;
	}

	static const struct of_device_id cell_bus_ids[] __initdata = {
	{ .type = "soc", },
	{ .compatible = "soc", },
	{ .type = "spider", },
	{ .type = "axon", },
	{ .type = "plb5", },
	{ .type = "plb4", },
	{ .type = "opb", },
	{ .type = "ebc", },
	{},
	};

	static int __init cell_publish_devices(void)
	{
	struct device_node *root = of_find_node_by_path("/");
	struct device_node *np;
	int node;

	/* Publish OF platform devices for southbridge IOs */
	of_platform_bus_probe(NULL, cell_bus_ids, NULL);

	/* On spider based blades, we need to manually create the OF
	* platform devices for the PCI host bridges
	*/
	for_each_child_of_node(root, np) {
	if (np->type == NULL \|\| (strcmp(np->type, "pci") != 0 &&
	strcmp(np->type, "pciex") != 0))
	continue;
	of_platform_device_create(np, NULL, NULL);
	}

	/* There is no device for the MIC memory controller, thus we create
	* a platform device for it to attach the EDAC driver to.
	*/
	for_each_online_node(node) {
	if (cbe_get_cpu_mic_tm_regs(cbe_node_to_cpu(node)) == NULL)
	continue;
	platform_device_register_simple("cbe-mic", node, NULL, 0);
	}

	return 0;
	}
	machine_subsys_initcall(cell, cell_publish_devices);

	static void cell_mpic_cascade(unsigned int irq, struct irq_desc *desc)
	{
	struct irq_chip *chip = irq_desc_get_chip(desc);
	struct mpic *mpic = irq_desc_get_handler_data(desc);
	unsigned int virq;

	virq = mpic_get_one_irq(mpic);
	if (virq != NO_IRQ)
	generic_handle_irq(virq);

	chip->irq_eoi(&desc->irq_data);
	}

	static void __init mpic_init_IRQ(void)
	{
	struct device_node *dn;
	struct mpic *mpic;
	unsigned int virq;

	for (dn = NULL;
	(dn = of_find_node_by_name(dn, "interrupt-controller"));) {
	if (!of_device_is_compatible(dn, "CBEA,platform-open-pic"))
	continue;

	/* The MPIC driver will get everything it needs from the
	* device-tree, just pass 0 to all arguments
	*/
	mpic = mpic_alloc(dn, 0, 0, 0, 0, " MPIC ");
	if (mpic == NULL)
	continue;
	mpic_init(mpic);

	virq = irq_of_parse_and_map(dn, 0);
	if (virq == NO_IRQ)
	continue;

	printk(KERN_INFO "%s : hooking up to IRQ %d\n",
	dn->full_name, virq);
	irq_set_handler_data(virq, mpic);
	irq_set_chained_handler(virq, cell_mpic_cascade);
	}
	}


	static void __init cell_init_irq(void)
	{
	iic_init_IRQ();
	spider_init_IRQ();
	mpic_init_IRQ();
	}

	static void __init cell_set_dabrx(void)
	{
	mtspr(SPRN_DABRX, DABRX_KERNEL \| DABRX_USER);
	}

	static void __init cell_setup_arch(void)
	{
	#ifdef CONFIG_SPU_BASE
	spu_priv1_ops = &spu_priv1_mmio_ops;
	spu_management_ops = &spu_management_of_ops;
	#endif

	cbe_regs_init();

	cell_set_dabrx();

	#ifdef CONFIG_CBE_RAS
	cbe_ras_init();
	#endif

	#ifdef CONFIG_SMP
	smp_init_cell();
	#endif
	/* init to some ~sane value until calibrate_delay() runs */
	loops_per_jiffy = 50000000;

	/* Find and initialize PCI host bridges */
	init_pci_config_tokens();

	cbe_pervasive_init();
	#ifdef CONFIG_DUMMY_CONSOLE
	conswitchp = &dummy_con;
	#endif

	mmio_nvram_init();
	}

	static int __init cell_probe(void)
	{
	unsigned long root = of_get_flat_dt_root();

	if (!of_flat_dt_is_compatible(root, "IBM,CBEA") &&
	!of_flat_dt_is_compatible(root, "IBM,CPBW-1.0"))
	return 0;

	hpte_init_native();

	return 1;
	}

	define_machine(cell) {
	.name = "Cell",
	.probe = cell_probe,
	.setup_arch = cell_setup_arch,
	.show_cpuinfo = cell_show_cpuinfo,
	.restart = rtas_restart,
	.power_off = rtas_power_off,
	.halt = rtas_halt,
	.get_boot_time = rtas_get_boot_time,
	.get_rtc_time = rtas_get_rtc_time,
	.set_rtc_time = rtas_set_rtc_time,
	.calibrate_decr = generic_calibrate_decr,
	.progress = cell_progress,
	.init_IRQ = cell_init_irq,
	.pci_setup_phb = cell_setup_phb,
	};