cregit-Linux how code gets into the kernel

Release 4.14 arch/powerpc/platforms/cell/setup.c

/*
 *  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/export.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 <asm/io-workarounds.h>

#include "cell.h"
#include "interrupt.h"
#include "pervasive.h"
#include "ras.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); }

Contributors

PersonTokensPropCommitsCommitProp
Arnd Bergmann5898.31%375.00%
Stephen Rothwell11.69%125.00%
Total59100.00%4100.00%


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

Contributors

PersonTokensPropCommitsCommitProp
Arnd Bergmann27100.00%2100.00%
Total27100.00%2100.00%


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)); }

Contributors

PersonTokensPropCommitsCommitProp
Michael Ellerman167100.00%1100.00%
Total167100.00%1100.00%

DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, cell_fixup_pcie_rootcomplex);
static int cell_setup_phb(struct pci_controller *phb) { const char *model; struct device_node *np; int rc = rtas_setup_phb(phb); if (rc) return rc; phb->controller_ops = cell_pci_controller_ops; 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); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Ishizaki Kou10494.55%150.00%
Michael Ellerman65.45%150.00%
Total110100.00%2100.00%

static const struct of_device_id cell_bus_ids[] __initconst = { { .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; }

Contributors

PersonTokensPropCommitsCommitProp
Ishizaki Kou6654.10%120.00%
Benjamin Herrenschmidt5545.08%360.00%
Jonas Bonn10.82%120.00%
Total122100.00%5100.00%

machine_subsys_initcall(cell, cell_publish_devices);
static void __init mpic_init_IRQ(void) { struct device_node *dn; struct mpic *mpic; 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, MPIC_SECONDARY | MPIC_NO_RESET, 0, 0, " MPIC "); if (mpic == NULL) continue; mpic_init(mpic); } }

Contributors

PersonTokensPropCommitsCommitProp
Benjamin Herrenschmidt7895.12%125.00%
Kyle Moffett33.66%250.00%
Stephen Rothwell11.22%125.00%
Total82100.00%4100.00%


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

Contributors

PersonTokensPropCommitsCommitProp
Arnd Bergmann1055.56%250.00%
Benjamin Herrenschmidt844.44%250.00%
Total18100.00%4100.00%


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

Contributors

PersonTokensPropCommitsCommitProp
Jens Osterkamp18100.00%1100.00%
Total18100.00%1100.00%


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(); }

Contributors

PersonTokensPropCommitsCommitProp
Arnd Bergmann3346.48%337.50%
Benjamin Herrenschmidt2028.17%225.00%
Geoff Levand1521.13%225.00%
Jens Osterkamp34.23%112.50%
Total71100.00%8100.00%


static int __init cell_probe(void) { if (!of_machine_is_compatible("IBM,CBEA") && !of_machine_is_compatible("IBM,CPBW-1.0")) return 0; pm_power_off = rtas_power_off; return 1; }

Contributors

PersonTokensPropCommitsCommitProp
Arnd Bergmann1854.55%342.86%
Benjamin Herrenschmidt618.18%228.57%
Michael Ellerman515.15%114.29%
Alexander Graf412.12%114.29%
Total33100.00%7100.00%

define_machine(cell) { .name = "Cell", .probe = cell_probe, .setup_arch = cell_setup_arch, .show_cpuinfo = cell_show_cpuinfo, .restart = rtas_restart, .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, }; struct pci_controller_ops cell_pci_controller_ops;

Overall Contributors

PersonTokensPropCommitsCommitProp
Arnd Bergmann29629.05%716.28%
Benjamin Herrenschmidt20820.41%1023.26%
Michael Ellerman19318.94%613.95%
Ishizaki Kou17316.98%12.33%
Jonas Bonn686.67%12.33%
Jens Osterkamp212.06%12.33%
Geoff Levand181.77%24.65%
Joel H Schopp90.88%12.33%
Daniel Axtens70.69%12.33%
Alexander Graf40.39%12.33%
Paul Mackerras40.39%24.65%
Jon Loeliger30.29%12.33%
Kyle Moffett30.29%24.65%
Paul Gortmaker30.29%12.33%
Stephen Rothwell30.29%36.98%
Dave Jones30.29%12.33%
Grant C. Likely20.20%12.33%
Uwe Kleine-König10.10%12.33%
Total1019100.00%43100.00%
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