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
59struct irq_desc;
60void nlm_smp_function_ipi_handler(unsigned int irq, struct irq_desc *desc);
61void nlm_smp_resched_ipi_handler(unsigned int irq, struct irq_desc *desc);
62void nlm_smp_irq_init(int hwcpuid);
63void nlm_boot_secondary_cpus(void);
64int nlm_wakeup_secondary_cpus(void);
65void nlm_rmiboot_preboot(void);
66void nlm_percpu_init(int hwcpuid);
67
68static inline void *
69nlm_get_boot_data(int offset)
70{
71	return (void *)(CKSEG1ADDR(RESET_DATA_PHYS) + offset);
72}
73
74static inline void
75nlm_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 */
85void nlm_init_boot_cpu(void);
86unsigned int nlm_get_cpu_frequency(void);
87extern struct plat_smp_ops nlm_smp_ops;
88extern char nlm_reset_entry[], nlm_reset_entry_end[];
89
90/* SWIOTLB */
91extern struct dma_map_ops nlm_swiotlb_dma_ops;
92
93extern unsigned int nlm_threads_per_core;
94extern cpumask_t nlm_cpumask;
95
96struct irq_data;
97uint64_t nlm_pci_irqmask(int node);
98void nlm_setup_pic_irq(int node, int picirq, int irq, int irt);
99void nlm_set_pic_extra_ack(int node, int irq,  void (*xack)(struct irq_data *));
100
101#ifdef CONFIG_PCI_MSI
102void nlm_dispatch_msi(int node, int lirq);
103void nlm_dispatch_msix(int node, int msixirq);
104#endif
105
106/*
107 * The NR_IRQs is divided between nodes, each of them has a separate irq space
108 */
109static inline int nlm_irq_to_xirq(int node, int irq)
110{
111	return node * NR_IRQS / NLM_NR_NODES + irq;
112}
113
114#ifdef CONFIG_CPU_XLR
115#define nlm_cores_per_node()	8
116#else
117static inline int nlm_cores_per_node(void)
118{
119	return ((read_c0_prid() & PRID_IMP_MASK)
120				== PRID_IMP_NETLOGIC_XLP9XX) ? 32 : 8;
121}
122#endif
123static inline int nlm_threads_per_node(void)
124{
125	return nlm_cores_per_node() * NLM_THREADS_PER_CORE;
126}
127
128static inline int nlm_hwtid_to_node(int hwtid)
129{
130	return hwtid / nlm_threads_per_node();
131}
132
133extern int nlm_cpu_ready[];
134#endif /* __ASSEMBLY__ */
135#endif /* _NETLOGIC_COMMON_H_ */
136