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 *
nlm_get_boot_data(int offset)69 nlm_get_boot_data(int offset)
70 {
71 return (void *)(CKSEG1ADDR(RESET_DATA_PHYS) + offset);
72 }
73
74 static inline void
nlm_set_nmi_handler(void * handler)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 */
nlm_irq_to_xirq(int node,int irq)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
nlm_cores_per_node(void)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
nlm_threads_per_node(void)120 static inline int nlm_threads_per_node(void)
121 {
122 return nlm_cores_per_node() * NLM_THREADS_PER_CORE;
123 }
124
nlm_hwtid_to_node(int hwtid)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
