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Diffstat (limited to 'arch/tile/include/asm/smp.h')
-rw-r--r-- | arch/tile/include/asm/smp.h | 139 |
1 files changed, 0 insertions, 139 deletions
diff --git a/arch/tile/include/asm/smp.h b/arch/tile/include/asm/smp.h deleted file mode 100644 index 735e7f144733..000000000000 --- a/arch/tile/include/asm/smp.h +++ /dev/null @@ -1,139 +0,0 @@ -/* - * Copyright 2010 Tilera Corporation. All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation, version 2. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for - * more details. - */ - -#ifndef _ASM_TILE_SMP_H -#define _ASM_TILE_SMP_H - -#ifdef CONFIG_SMP - -#include <asm/processor.h> -#include <linux/cpumask.h> -#include <linux/irqreturn.h> -#include <hv/hypervisor.h> - -/* Set up this tile to support receiving hypervisor messages */ -void init_messaging(void); - -/* Set up this tile to support receiving device interrupts and IPIs. */ -void init_per_tile_IRQs(void); - -/* Send a message to processors specified in mask */ -void send_IPI_many(const struct cpumask *mask, int tag); - -/* Send a message to all but the sending processor */ -void send_IPI_allbutself(int tag); - -/* Send a message to a specific processor */ -void send_IPI_single(int dest, int tag); - -/* Process an IPI message */ -void evaluate_message(int tag); - -/* Boot a secondary cpu */ -void online_secondary(void); - -/* Topology of the supervisor tile grid, and coordinates of boot processor */ -extern HV_Topology smp_topology; - -/* Accessors for grid size */ -#define smp_height (smp_topology.height) -#define smp_width (smp_topology.width) - -/* Convenience functions for converting cpu <-> coords. */ -static inline int cpu_x(int cpu) -{ - return cpu % smp_width; -} -static inline int cpu_y(int cpu) -{ - return cpu / smp_width; -} -static inline int xy_to_cpu(int x, int y) -{ - return y * smp_width + x; -} - -/* Hypervisor message tags sent via the tile send_IPI*() routines. */ -#define MSG_TAG_START_CPU 1 -#define MSG_TAG_STOP_CPU 2 -#define MSG_TAG_CALL_FUNCTION_MANY 3 -#define MSG_TAG_CALL_FUNCTION_SINGLE 4 -#define MSG_TAG_IRQ_WORK 5 - -/* Hook for the generic smp_call_function_many() routine. */ -static inline void arch_send_call_function_ipi_mask(struct cpumask *mask) -{ - send_IPI_many(mask, MSG_TAG_CALL_FUNCTION_MANY); -} - -/* Hook for the generic smp_call_function_single() routine. */ -static inline void arch_send_call_function_single_ipi(int cpu) -{ - send_IPI_single(cpu, MSG_TAG_CALL_FUNCTION_SINGLE); -} - -/* Print out the boot string describing which cpus were disabled. */ -void print_disabled_cpus(void); - -#else /* !CONFIG_SMP */ - -#define smp_master_cpu 0 -#define smp_height 1 -#define smp_width 1 -#define cpu_x(cpu) 0 -#define cpu_y(cpu) 0 -#define xy_to_cpu(x, y) 0 - -#endif /* !CONFIG_SMP */ - - -/* Which cpus may be used as the lotar in a page table entry. */ -extern struct cpumask cpu_lotar_map; -#define cpu_is_valid_lotar(cpu) cpumask_test_cpu((cpu), &cpu_lotar_map) - -/* Which processors are used for hash-for-home mapping */ -extern struct cpumask hash_for_home_map; - -/* Which cpus can have their cache flushed by hv_flush_remote(). */ -extern struct cpumask cpu_cacheable_map; -#define cpu_cacheable(cpu) cpumask_test_cpu((cpu), &cpu_cacheable_map) - -/* Convert an HV_LOTAR value into a cpu. */ -static inline int hv_lotar_to_cpu(HV_LOTAR lotar) -{ - return HV_LOTAR_X(lotar) + (HV_LOTAR_Y(lotar) * smp_width); -} - -/* - * Extension of <linux/cpumask.h> functionality when you just want - * to express a mask or suppression or inclusion region without - * being too concerned about exactly which cpus are valid in that region. - */ -int bitmap_parselist_crop(const char *bp, unsigned long *maskp, int nmaskbits); - -#define cpulist_parse_crop(buf, dst) \ - __cpulist_parse_crop((buf), (dst), NR_CPUS) -static inline int __cpulist_parse_crop(const char *buf, struct cpumask *dstp, - int nbits) -{ - return bitmap_parselist_crop(buf, cpumask_bits(dstp), nbits); -} - -/* Initialize the IPI subsystem. */ -void ipi_init(void); - -/* Function for start-cpu message to cause us to jump to. */ -extern unsigned long start_cpu_function_addr; - -#endif /* _ASM_TILE_SMP_H */ |