2 * Copyright (C) 2005 MIPS Technologies, Inc. All rights reserved.
4 * This program is free software; you can distribute it and/or modify it
5 * under the terms of the GNU General Public License (Version 2) as
6 * published by the Free Software Foundation.
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
19 * Simulator Platform-specific hooks for SMTC operation
21 #include <linux/kernel.h>
22 #include <linux/sched.h>
23 #include <linux/cpumask.h>
24 #include <linux/interrupt.h>
25 #include <linux/smp.h>
27 #include <asm/atomic.h>
29 #include <asm/processor.h>
31 #include <asm/system.h>
32 #include <asm/mmu_context.h>
33 #include <asm/smtc_ipi.h>
35 /* VPE/SMP Prototype implements platform interfaces directly */
38 * Cause the specified action to be performed on a targeted "CPU"
41 static void ssmtc_send_ipi_single(int cpu
, unsigned int action
)
43 smtc_send_ipi(cpu
, LINUX_SMP_IPI
, action
);
44 /* "CPU" may be TC of same VPE, VPE of same CPU, or different CPU */
47 static inline void ssmtc_send_ipi_mask(const struct cpumask
*mask
,
53 ssmtc_send_ipi_single(i
, action
);
57 * Post-config but pre-boot cleanup entry point
59 static void __cpuinit
ssmtc_init_secondary(void)
61 smtc_init_secondary();
65 * SMP initialization finalization entry point
67 static void __cpuinit
ssmtc_smp_finish(void)
73 * Hook for after all CPUs are online
75 static void ssmtc_cpus_done(void)
80 * Platform "CPU" startup hook
82 static void __cpuinit
ssmtc_boot_secondary(int cpu
, struct task_struct
*idle
)
84 smtc_boot_secondary(cpu
, idle
);
87 static void __init
ssmtc_smp_setup(void)
89 if (read_c0_config3() & (1 << 2))
90 mipsmt_build_cpu_map(0);
94 * Platform SMP pre-initialization
96 static void ssmtc_prepare_cpus(unsigned int max_cpus
)
99 * As noted above, we can assume a single CPU for now
100 * but it may be multithreaded.
103 if (read_c0_config3() & (1 << 2)) {
104 mipsmt_prepare_cpus();
108 struct plat_smp_ops ssmtc_smp_ops
= {
109 .send_ipi_single
= ssmtc_send_ipi_single
,
110 .send_ipi_mask
= ssmtc_send_ipi_mask
,
111 .init_secondary
= ssmtc_init_secondary
,
112 .smp_finish
= ssmtc_smp_finish
,
113 .cpus_done
= ssmtc_cpus_done
,
114 .boot_secondary
= ssmtc_boot_secondary
,
115 .smp_setup
= ssmtc_smp_setup
,
116 .prepare_cpus
= ssmtc_prepare_cpus
,