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_set_nmi_handler(void *handler)
  64 {
  65         char *reset_data;
  66
  67         reset_data = (char *)CKSEG1ADDR(RESET_DATA_PHYS);
  68         *(int64_t *)(reset_data + BOOT_NMI_HANDLER) = (long)handler;
  69 }
  70
  71 /*
  72  * Misc.
  73  */
  74 void nlm_init_boot_cpu(void);
  75 unsigned int nlm_get_cpu_frequency(void);
  76 void nlm_node_init(int node);
  77 extern struct plat_smp_ops nlm_smp_ops;
  78 extern char nlm_reset_entry[], nlm_reset_entry_end[];
  79
  80 /* SWIOTLB */
  81 extern struct dma_map_ops nlm_swiotlb_dma_ops;
  82
  83 extern unsigned int nlm_threads_per_core;
  84 extern cpumask_t nlm_cpumask;
  85
  86 struct nlm_soc_info {
  87         unsigned long coremask; /* cores enabled on the soc */
  88         unsigned long ebase;
  89         uint64_t irqmask;
  90         uint64_t sysbase;       /* only for XLP */
  91         uint64_t picbase;
  92         spinlock_t piclock;
  93 };
  94
  95 #define nlm_get_node(i)         (&nlm_nodes[i])
  96 #ifdef CONFIG_CPU_XLR
  97 #define nlm_current_node()      (&nlm_nodes[0])
  98 #else
  99 #define nlm_current_node()      (&nlm_nodes[nlm_nodeid()])
 100 #endif
 101
 102 struct irq_data;
 103 uint64_t nlm_pci_irqmask(int node);
 104 void nlm_set_pic_extra_ack(int node, int irq,  void (*xack)(struct irq_data *));
 105
 106 /*
 107  * The NR_IRQs is divided between nodes, each of them has a separate irq space
 108  */
 109 static inline int nlm_irq_to_xirq(int node, int irq)
 110 {
 111         return node * NR_IRQS / NLM_NR_NODES + irq;
 112 }
 113
 114 extern struct nlm_soc_info nlm_nodes[NLM_NR_NODES];
 115 extern int nlm_cpu_ready[];
 116 #endif
 117 #endif /* _NETLOGIC_COMMON_H_ */