diff options
Diffstat (limited to 'arch/ia64')
| -rw-r--r-- | arch/ia64/kernel/iosapic.c | 60 |
1 files changed, 24 insertions, 36 deletions
diff --git a/arch/ia64/kernel/iosapic.c b/arch/ia64/kernel/iosapic.c index 522b13d0bde3..29ec86c24194 100644 --- a/arch/ia64/kernel/iosapic.c +++ b/arch/ia64/kernel/iosapic.c @@ -117,16 +117,22 @@ static DEFINE_SPINLOCK(iosapic_lock); * These tables map IA-64 vectors to the IOSAPIC pin that generates this * vector. */ +static struct iosapic { + char __iomem *addr; /* base address of IOSAPIC */ + unsigned int gsi_base; /* GSI base */ + unsigned short num_rte; /* # of RTEs on this IOSAPIC */ + int rtes_inuse; /* # of RTEs in use on this IOSAPIC */ +#ifdef CONFIG_NUMA + unsigned short node; /* numa node association via pxm */ +#endif +} iosapic_lists[NR_IOSAPICS]; struct iosapic_rte_info { - struct list_head rte_list; /* node in list of RTEs sharing the - * same vector */ - char __iomem *addr; /* base address of IOSAPIC */ - unsigned int gsi_base; /* first GSI assigned to this - * IOSAPIC */ + struct list_head rte_list; /* RTEs sharing the same vector */ char rte_index; /* IOSAPIC RTE index */ int refcnt; /* reference counter */ unsigned int flags; /* flags */ + struct iosapic *iosapic; } ____cacheline_aligned; static struct iosapic_intr_info { @@ -142,17 +148,6 @@ static struct iosapic_intr_info { unsigned char trigger : 1; /* trigger mode (see iosapic.h) */ } iosapic_intr_info[IA64_NUM_VECTORS]; -static struct iosapic { - char __iomem *addr; /* base address of IOSAPIC */ - unsigned int gsi_base; /* first GSI assigned to this - * IOSAPIC */ - unsigned short num_rte; /* # of RTEs on this IOSAPIC */ - int rtes_inuse; /* # of RTEs in use on this IOSAPIC */ -#ifdef CONFIG_NUMA - unsigned short node; /* numa node association via pxm */ -#endif -} iosapic_lists[NR_IOSAPICS]; - static unsigned char pcat_compat __devinitdata; /* 8259 compatibility flag */ static int iosapic_kmalloc_ok; @@ -184,7 +179,7 @@ _gsi_to_vector (unsigned int gsi) for (info = iosapic_intr_info; info < iosapic_intr_info + IA64_NUM_VECTORS; ++info) list_for_each_entry(rte, &info->rtes, rte_list) - if (rte->gsi_base + rte->rte_index == gsi) + if (rte->iosapic->gsi_base + rte->rte_index == gsi) return info - iosapic_intr_info; return -1; } @@ -221,7 +216,7 @@ static struct iosapic_rte_info *gsi_vector_to_rte(unsigned int gsi, struct iosapic_rte_info *rte; list_for_each_entry(rte, &iosapic_intr_info[vec].rtes, rte_list) - if (rte->gsi_base + rte->rte_index == gsi) + if (rte->iosapic->gsi_base + rte->rte_index == gsi) return rte; return NULL; } @@ -243,7 +238,7 @@ set_rte (unsigned int gsi, unsigned int vector, unsigned int dest, int mask) return; /* not an IOSAPIC interrupt */ rte_index = rte->rte_index; - addr = rte->addr; + addr = rte->iosapic->addr; pol = iosapic_intr_info[vector].polarity; trigger = iosapic_intr_info[vector].trigger; dmode = iosapic_intr_info[vector].dmode; @@ -297,10 +292,10 @@ kexec_disable_iosapic(void) iosapic_intr_info + IA64_NUM_VECTORS; ++info, ++vec) { list_for_each_entry(rte, &info->rtes, rte_list) { - iosapic_write(rte->addr, + iosapic_write(rte->iosapic->addr, IOSAPIC_RTE_LOW(rte->rte_index), IOSAPIC_MASK|vec); - iosapic_eoi(rte->addr, vec); + iosapic_eoi(rte->iosapic->addr, vec); } } } @@ -323,7 +318,7 @@ mask_irq (unsigned int irq) /* set only the mask bit */ low32 = iosapic_intr_info[vec].low32 |= IOSAPIC_MASK; list_for_each_entry(rte, &iosapic_intr_info[vec].rtes, rte_list) { - addr = rte->addr; + addr = rte->iosapic->addr; rte_index = rte->rte_index; iosapic_write(addr, IOSAPIC_RTE_LOW(rte_index), low32); } @@ -346,7 +341,7 @@ unmask_irq (unsigned int irq) spin_lock_irqsave(&iosapic_lock, flags); low32 = iosapic_intr_info[vec].low32 &= ~IOSAPIC_MASK; list_for_each_entry(rte, &iosapic_intr_info[vec].rtes, rte_list) { - addr = rte->addr; + addr = rte->iosapic->addr; rte_index = rte->rte_index; iosapic_write(addr, IOSAPIC_RTE_LOW(rte_index), low32); } @@ -394,7 +389,7 @@ iosapic_set_affinity (unsigned int irq, cpumask_t mask) iosapic_intr_info[vec].low32 = low32; iosapic_intr_info[vec].dest = dest; list_for_each_entry(rte, &iosapic_intr_info[vec].rtes, rte_list) { - addr = rte->addr; + addr = rte->iosapic->addr; rte_index = rte->rte_index; iosapic_write(addr, IOSAPIC_RTE_HIGH(rte_index), high32); iosapic_write(addr, IOSAPIC_RTE_LOW(rte_index), low32); @@ -422,7 +417,7 @@ iosapic_end_level_irq (unsigned int irq) move_native_irq(irq); list_for_each_entry(rte, &iosapic_intr_info[vec].rtes, rte_list) - iosapic_eoi(rte->addr, vec); + iosapic_eoi(rte->iosapic->addr, vec); } #define iosapic_shutdown_level_irq mask_irq @@ -614,10 +609,7 @@ register_intr (unsigned int gsi, int vector, unsigned char delivery, { irq_desc_t *idesc; struct hw_interrupt_type *irq_type; - int rte_index; int index; - unsigned long gsi_base; - void __iomem *iosapic_address; struct iosapic_rte_info *rte; index = find_iosapic(gsi); @@ -627,9 +619,6 @@ register_intr (unsigned int gsi, int vector, unsigned char delivery, return -ENODEV; } - iosapic_address = iosapic_lists[index].addr; - gsi_base = iosapic_lists[index].gsi_base; - rte = gsi_vector_to_rte(gsi, vector); if (!rte) { rte = iosapic_alloc_rte(); @@ -639,10 +628,8 @@ register_intr (unsigned int gsi, int vector, unsigned char delivery, return -ENOMEM; } - rte_index = gsi - gsi_base; - rte->rte_index = rte_index; - rte->addr = iosapic_address; - rte->gsi_base = gsi_base; + rte->iosapic = &iosapic_lists[index]; + rte->rte_index = gsi - rte->iosapic->gsi_base; rte->refcnt++; list_add_tail(&rte->rte_list, &iosapic_intr_info[vector].rtes); iosapic_intr_info[vector].count++; @@ -877,7 +864,8 @@ iosapic_unregister_intr (unsigned int gsi) /* Mask the interrupt */ low32 = iosapic_intr_info[vector].low32 | IOSAPIC_MASK; - iosapic_write(rte->addr, IOSAPIC_RTE_LOW(rte->rte_index), low32); + iosapic_write(rte->iosapic->addr, + IOSAPIC_RTE_LOW(rte->rte_index), low32); /* Remove the rte entry from the list */ list_del(&rte->rte_list); |