diff options
Diffstat (limited to 'include/asm-mips/smtc_ipi.h')
-rw-r--r-- | include/asm-mips/smtc_ipi.h | 128 |
1 files changed, 0 insertions, 128 deletions
diff --git a/include/asm-mips/smtc_ipi.h b/include/asm-mips/smtc_ipi.h deleted file mode 100644 index 8ce517574340..000000000000 --- a/include/asm-mips/smtc_ipi.h +++ /dev/null @@ -1,128 +0,0 @@ -/* - * Definitions used in MIPS MT SMTC "Interprocessor Interrupt" code. - */ -#ifndef __ASM_SMTC_IPI_H -#define __ASM_SMTC_IPI_H - -#include <linux/spinlock.h> - -//#define SMTC_IPI_DEBUG - -#ifdef SMTC_IPI_DEBUG -#include <asm/mipsregs.h> -#include <asm/mipsmtregs.h> -#endif /* SMTC_IPI_DEBUG */ - -/* - * An IPI "message" - */ - -struct smtc_ipi { - struct smtc_ipi *flink; - int type; - void *arg; - int dest; -#ifdef SMTC_IPI_DEBUG - int sender; - long stamp; -#endif /* SMTC_IPI_DEBUG */ -}; - -/* - * Defined IPI Types - */ - -#define LINUX_SMP_IPI 1 -#define SMTC_CLOCK_TICK 2 -#define IRQ_AFFINITY_IPI 3 - -/* - * A queue of IPI messages - */ - -struct smtc_ipi_q { - struct smtc_ipi *head; - spinlock_t lock; - struct smtc_ipi *tail; - int depth; -}; - -static inline void smtc_ipi_nq(struct smtc_ipi_q *q, struct smtc_ipi *p) -{ - unsigned long flags; - - spin_lock_irqsave(&q->lock, flags); - if (q->head == NULL) - q->head = q->tail = p; - else - q->tail->flink = p; - p->flink = NULL; - q->tail = p; - q->depth++; -#ifdef SMTC_IPI_DEBUG - p->sender = read_c0_tcbind(); - p->stamp = read_c0_count(); -#endif /* SMTC_IPI_DEBUG */ - spin_unlock_irqrestore(&q->lock, flags); -} - -static inline struct smtc_ipi *__smtc_ipi_dq(struct smtc_ipi_q *q) -{ - struct smtc_ipi *p; - - if (q->head == NULL) - p = NULL; - else { - p = q->head; - q->head = q->head->flink; - q->depth--; - /* Arguably unnecessary, but leaves queue cleaner */ - if (q->head == NULL) - q->tail = NULL; - } - - return p; -} - -static inline struct smtc_ipi *smtc_ipi_dq(struct smtc_ipi_q *q) -{ - unsigned long flags; - struct smtc_ipi *p; - - spin_lock_irqsave(&q->lock, flags); - p = __smtc_ipi_dq(q); - spin_unlock_irqrestore(&q->lock, flags); - - return p; -} - -static inline void smtc_ipi_req(struct smtc_ipi_q *q, struct smtc_ipi *p) -{ - unsigned long flags; - - spin_lock_irqsave(&q->lock, flags); - if (q->head == NULL) { - q->head = q->tail = p; - p->flink = NULL; - } else { - p->flink = q->head; - q->head = p; - } - q->depth++; - spin_unlock_irqrestore(&q->lock, flags); -} - -static inline int smtc_ipi_qdepth(struct smtc_ipi_q *q) -{ - unsigned long flags; - int retval; - - spin_lock_irqsave(&q->lock, flags); - retval = q->depth; - spin_unlock_irqrestore(&q->lock, flags); - return retval; -} - -extern void smtc_send_ipi(int cpu, int type, unsigned int action); - -#endif /* __ASM_SMTC_IPI_H */ |