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kernel/linux-rt-4.4.41/arch/mips/include/asm/netlogic/common.h 4.02 KB
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  /*
   * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
   * reserved.
   *
   * This software is available to you under a choice of one of two
   * licenses.  You may choose to be licensed under the terms of the GNU
   * General Public License (GPL) Version 2, available from the file
   * COPYING in the main directory of this source tree, or the NetLogic
   * license below:
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR
   * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
   * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
   * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
   * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
   * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #ifndef _NETLOGIC_COMMON_H_
  #define _NETLOGIC_COMMON_H_
  
  /*
   * Common SMP definitions
   */
  #define RESET_VEC_PHYS		0x1fc00000
  #define RESET_VEC_SIZE		8192		/* 8KB reset code and data */
  #define RESET_DATA_PHYS		(RESET_VEC_PHYS + (1<<10))
  
  /* Offsets of parameters in the RESET_DATA_PHYS area */
  #define BOOT_THREAD_MODE	0
  #define BOOT_NMI_LOCK		4
  #define BOOT_NMI_HANDLER	8
  
  /* CPU ready flags for each CPU */
  #define BOOT_CPU_READY		2048
  
  #ifndef __ASSEMBLY__
  #include <linux/cpumask.h>
  #include <linux/spinlock.h>
  #include <asm/irq.h>
  #include <asm/mach-netlogic/multi-node.h>
  
  struct irq_desc;
  void nlm_smp_function_ipi_handler(struct irq_desc *desc);
  void nlm_smp_resched_ipi_handler(struct irq_desc *desc);
  void nlm_smp_irq_init(int hwcpuid);
  void nlm_boot_secondary_cpus(void);
  int nlm_wakeup_secondary_cpus(void);
  void nlm_rmiboot_preboot(void);
  void nlm_percpu_init(int hwcpuid);
  
  static inline void *
  nlm_get_boot_data(int offset)
  {
  	return (void *)(CKSEG1ADDR(RESET_DATA_PHYS) + offset);
  }
  
  static inline void
  nlm_set_nmi_handler(void *handler)
  {
  	void *nmih = nlm_get_boot_data(BOOT_NMI_HANDLER);
  
  	*(int64_t *)nmih = (long)handler;
  }
  
  /*
   * Misc.
   */
  void nlm_init_boot_cpu(void);
  unsigned int nlm_get_cpu_frequency(void);
  extern struct plat_smp_ops nlm_smp_ops;
  extern char nlm_reset_entry[], nlm_reset_entry_end[];
  
  /* SWIOTLB */
  extern struct dma_map_ops nlm_swiotlb_dma_ops;
  
  extern unsigned int nlm_threads_per_core;
  extern cpumask_t nlm_cpumask;
  
  struct irq_data;
  uint64_t nlm_pci_irqmask(int node);
  void nlm_setup_pic_irq(int node, int picirq, int irq, int irt);
  void nlm_set_pic_extra_ack(int node, int irq,  void (*xack)(struct irq_data *));
  
  #ifdef CONFIG_PCI_MSI
  void nlm_dispatch_msi(int node, int lirq);
  void nlm_dispatch_msix(int node, int msixirq);
  #endif
  
  /*
   * The NR_IRQs is divided between nodes, each of them has a separate irq space
   */
  static inline int nlm_irq_to_xirq(int node, int irq)
  {
  	return node * NR_IRQS / NLM_NR_NODES + irq;
  }
  
  #ifdef CONFIG_CPU_XLR
  #define nlm_cores_per_node()	8
  #else
  static inline int nlm_cores_per_node(void)
  {
  	return ((read_c0_prid() & PRID_IMP_MASK)
  				== PRID_IMP_NETLOGIC_XLP9XX) ? 32 : 8;
  }
  #endif
  static inline int nlm_threads_per_node(void)
  {
  	return nlm_cores_per_node() * NLM_THREADS_PER_CORE;
  }
  
  static inline int nlm_hwtid_to_node(int hwtid)
  {
  	return hwtid / nlm_threads_per_node();
  }
  
  extern int nlm_cpu_ready[];
  #endif /* __ASSEMBLY__ */
  #endif /* _NETLOGIC_COMMON_H_ */