LXR linux/arch/mips/include/asm/netlogic/common.h

   1/*
   2 * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
   3 * reserved.
   4 *
   5 * This software is available to you under a choice of one of two
   6 * licenses.  You may choose to be licensed under the terms of the GNU
   7 * General Public License (GPL) Version 2, available from the file
   8 * COPYING in the main directory of this source tree, or the NetLogic
   9 * license below:
  10 *
  11 * Redistribution and use in source and binary forms, with or without
  12 * modification, are permitted provided that the following conditions
  13 * are met:
  14 *
  15 * 1. Redistributions of source code must retain the above copyright
  16 *    notice, this list of conditions and the following disclaimer.
  17 * 2. Redistributions in binary form must reproduce the above copyright
  18 *    notice, this list of conditions and the following disclaimer in
  19 *    the documentation and/or other materials provided with the
  20 *    distribution.
  21 *
  22 * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR
  23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  24 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25 * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE
  26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  29 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  30 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
  31 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
  32 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33 */
  34
  35#ifndef _NETLOGIC_COMMON_H_
  36#define _NETLOGIC_COMMON_H_
  37
  38/*
  39 * Common SMP definitions
  40 */
  41#define RESET_VEC_PHYS          0x1fc00000
  42#define RESET_VEC_SIZE          8192            /* 8KB reset code and data */
  43#define RESET_DATA_PHYS         (RESET_VEC_PHYS + (1<<10))
  44
  45/* Offsets of parameters in the RESET_DATA_PHYS area */
  46#define BOOT_THREAD_MODE        0
  47#define BOOT_NMI_LOCK           4
  48#define BOOT_NMI_HANDLER        8
  49
  50/* CPU ready flags for each CPU */
  51#define BOOT_CPU_READY          2048
  52
  53#ifndef __ASSEMBLY__
  54#include <linux/cpumask.h>
  55#include <linux/spinlock.h>
  56#include <asm/irq.h>
  57#include <asm/mach-netlogic/multi-node.h>
  58
  59struct irq_desc;
  60void nlm_smp_function_ipi_handler(struct irq_desc *desc);
  61void nlm_smp_resched_ipi_handler(struct irq_desc *desc);
  62void nlm_smp_irq_init(int hwcpuid);
  63void nlm_boot_secondary_cpus(void);
  64int nlm_wakeup_secondary_cpus(void);
  65void nlm_rmiboot_preboot(void);
  66void nlm_percpu_init(int hwcpuid);
  67
  68static inline void *
  69nlm_get_boot_data(int offset)
  70{
  71        return (void *)(CKSEG1ADDR(RESET_DATA_PHYS) + offset);
  72}
  73
  74static inline void
  75nlm_set_nmi_handler(void *handler)
  76{
  77        void *nmih = nlm_get_boot_data(BOOT_NMI_HANDLER);
  78
  79        *(int64_t *)nmih = (long)handler;
  80}
  81
  82/*
  83 * Misc.
  84 */
  85void nlm_init_boot_cpu(void);
  86unsigned int nlm_get_cpu_frequency(void);
  87extern const struct plat_smp_ops nlm_smp_ops;
  88extern char nlm_reset_entry[], nlm_reset_entry_end[];
  89
  90extern unsigned int nlm_threads_per_core;
  91extern cpumask_t nlm_cpumask;
  92
  93struct irq_data;
  94uint64_t nlm_pci_irqmask(int node);
  95void nlm_setup_pic_irq(int node, int picirq, int irq, int irt);
  96void nlm_set_pic_extra_ack(int node, int irq,  void (*xack)(struct irq_data *));
  97
  98#ifdef CONFIG_PCI_MSI
  99void nlm_dispatch_msi(int node, int lirq);
 100void nlm_dispatch_msix(int node, int msixirq);
 101#endif
 102
 103/*
 104 * The NR_IRQs is divided between nodes, each of them has a separate irq space
 105 */
 106static inline int nlm_irq_to_xirq(int node, int irq)
 107{
 108        return node * NR_IRQS / NLM_NR_NODES + irq;
 109}
 110
 111#ifdef CONFIG_CPU_XLR
 112#define nlm_cores_per_node()    8
 113#else
 114static inline int nlm_cores_per_node(void)
 115{
 116        return ((read_c0_prid() & PRID_IMP_MASK)
 117                                == PRID_IMP_NETLOGIC_XLP9XX) ? 32 : 8;
 118}
 119#endif
 120static inline int nlm_threads_per_node(void)
 121{
 122        return nlm_cores_per_node() * NLM_THREADS_PER_CORE;
 123}
 124
 125static inline int nlm_hwtid_to_node(int hwtid)
 126{
 127        return hwtid / nlm_threads_per_node();
 128}
 129
 130extern int nlm_cpu_ready[];
 131#endif /* __ASSEMBLY__ */
 132#endif /* _NETLOGIC_COMMON_H_ */
 133