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Linux/arch/mips/include/asm/netlogic/common.h

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  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 
 59 struct irq_desc;
 60 void nlm_smp_function_ipi_handler(struct irq_desc *desc);
 61 void nlm_smp_resched_ipi_handler(struct irq_desc *desc);
 62 void nlm_smp_irq_init(int hwcpuid);
 63 void nlm_boot_secondary_cpus(void);
 64 int nlm_wakeup_secondary_cpus(void);
 65 void nlm_rmiboot_preboot(void);
 66 void nlm_percpu_init(int hwcpuid);
 67 
 68 static inline void *
 69 nlm_get_boot_data(int offset)
 70 {
 71         return (void *)(CKSEG1ADDR(RESET_DATA_PHYS) + offset);
 72 }
 73 
 74 static inline void
 75 nlm_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  */
 85 void nlm_init_boot_cpu(void);
 86 unsigned int nlm_get_cpu_frequency(void);
 87 extern const struct plat_smp_ops nlm_smp_ops;
 88 extern char nlm_reset_entry[], nlm_reset_entry_end[];
 89 
 90 extern unsigned int nlm_threads_per_core;
 91 extern cpumask_t nlm_cpumask;
 92 
 93 struct irq_data;
 94 uint64_t nlm_pci_irqmask(int node);
 95 void nlm_setup_pic_irq(int node, int picirq, int irq, int irt);
 96 void nlm_set_pic_extra_ack(int node, int irq,  void (*xack)(struct irq_data *));
 97 
 98 #ifdef CONFIG_PCI_MSI
 99 void nlm_dispatch_msi(int node, int lirq);
100 void 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  */
106 static 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
114 static 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
120 static inline int nlm_threads_per_node(void)
121 {
122         return nlm_cores_per_node() * NLM_THREADS_PER_CORE;
123 }
124 
125 static inline int nlm_hwtid_to_node(int hwtid)
126 {
127         return hwtid / nlm_threads_per_node();
128 }
129 
130 extern int nlm_cpu_ready[];
131 #endif /* __ASSEMBLY__ */
132 #endif /* _NETLOGIC_COMMON_H_ */
133 

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