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_DATA_PHYS         (RESET_VEC_PHYS + (1<<10))
  43 #define BOOT_THREAD_MODE        0
  44 #define BOOT_NMI_LOCK           4
  45 #define BOOT_NMI_HANDLER        8
  46
  47 #ifndef __ASSEMBLY__
  48 #include <linux/cpumask.h>
  49 #include <linux/spinlock.h>
  50 #include <asm/irq.h>
  51 #include <asm/mach-netlogic/multi-node.h>
  52
  53 struct irq_desc;
  54 void nlm_smp_function_ipi_handler(unsigned int irq, struct irq_desc *desc);
  55 void nlm_smp_resched_ipi_handler(unsigned int irq, struct irq_desc *desc);
  56 void nlm_smp_irq_init(int hwcpuid);
  57 void nlm_boot_secondary_cpus(void);
  58 int nlm_wakeup_secondary_cpus(void);
  59 void nlm_rmiboot_preboot(void);
  60 void nlm_percpu_init(int hwcpuid);
  61
  62 static inline void *
  63 nlm_get_boot_data(int offset)
  64 {
  65         return (void *)(CKSEG1ADDR(RESET_DATA_PHYS) + offset);
  66 }
  67
  68 static inline void
  69 nlm_set_nmi_handler(void *handler)
  70 {
  71         void *nmih = nlm_get_boot_data(BOOT_NMI_HANDLER);
  72
  73         *(int64_t *)nmih = (long)handler;
  74 }
  75
  76 /*
  77  * Misc.
  78  */
  79 void nlm_init_boot_cpu(void);
  80 unsigned int nlm_get_cpu_frequency(void);
  81 void nlm_node_init(int node);
  82 extern struct plat_smp_ops nlm_smp_ops;
  83 extern char nlm_reset_entry[], nlm_reset_entry_end[];
  84
  85 /* SWIOTLB */
  86 extern struct dma_map_ops nlm_swiotlb_dma_ops;
  87
  88 extern unsigned int nlm_threads_per_core;
  89 extern cpumask_t nlm_cpumask;
  90
  91 struct nlm_soc_info {
  92         unsigned long coremask; /* cores enabled on the soc */
  93         unsigned long ebase;
  94         uint64_t irqmask;
  95         uint64_t sysbase;       /* only for XLP */
  96         uint64_t picbase;
  97         spinlock_t piclock;
  98 };
  99
 100 #define nlm_get_node(i)         (&nlm_nodes[i])
 101 #ifdef CONFIG_CPU_XLR
 102 #define nlm_current_node()      (&nlm_nodes[0])
 103 #else
 104 #define nlm_current_node()      (&nlm_nodes[nlm_nodeid()])
 105 #endif
 106
 107 struct irq_data;
 108 uint64_t nlm_pci_irqmask(int node);
 109 void nlm_set_pic_extra_ack(int node, int irq,  void (*xack)(struct irq_data *));
 110
 111 /*
 112  * The NR_IRQs is divided between nodes, each of them has a separate irq space
 113  */
 114 static inline int nlm_irq_to_xirq(int node, int irq)
 115 {
 116         return node * NR_IRQS / NLM_NR_NODES + irq;
 117 }
 118
 119 extern struct nlm_soc_info nlm_nodes[NLM_NR_NODES];
 120 extern int nlm_cpu_ready[];
 121 #endif
 122 #endif /* _NETLOGIC_COMMON_H_ */