From 10083072bfabc40bc47306e512c158c57cf55c2e Mon Sep 17 00:00:00 2001 From: Mark Maule Date: Fri, 14 Apr 2006 16:03:49 -0500 Subject: [PATCH] PCI: per-platform IA64_{FIRST,LAST}_DEVICE_VECTOR definitions Abstract IA64_FIRST_DEVICE_VECTOR/IA64_LAST_DEVICE_VECTOR since SN platforms use a subset of the IA64 range. Implement this by making the above macros global variables which the platform can override in it setup code. Also add a reserve_irq_vector() routine used by SN to mark a vector's as in-use when that weren't allocated through assign_irq_vector(). Signed-off-by: Mark Maule Signed-off-by: Greg Kroah-Hartman --- arch/ia64/kernel/irq_ia64.c | 19 ++++++++++++++++++- arch/ia64/sn/kernel/irq.c | 7 +++++++ 2 files changed, 25 insertions(+), 1 deletion(-) (limited to 'arch') diff --git a/arch/ia64/kernel/irq_ia64.c b/arch/ia64/kernel/irq_ia64.c index 6c4d59fd0364..ef9a2b49307a 100644 --- a/arch/ia64/kernel/irq_ia64.c +++ b/arch/ia64/kernel/irq_ia64.c @@ -46,6 +46,10 @@ #define IRQ_DEBUG 0 +/* These can be overridden in platform_irq_init */ +int ia64_first_device_vector = IA64_DEF_FIRST_DEVICE_VECTOR; +int ia64_last_device_vector = IA64_DEF_LAST_DEVICE_VECTOR; + /* default base addr of IPI table */ void __iomem *ipi_base_addr = ((void __iomem *) (__IA64_UNCACHED_OFFSET | IA64_IPI_DEFAULT_BASE_ADDR)); @@ -60,7 +64,7 @@ __u8 isa_irq_to_vector_map[16] = { }; EXPORT_SYMBOL(isa_irq_to_vector_map); -static unsigned long ia64_vector_mask[BITS_TO_LONGS(IA64_NUM_DEVICE_VECTORS)]; +static unsigned long ia64_vector_mask[BITS_TO_LONGS(IA64_MAX_DEVICE_VECTORS)]; int assign_irq_vector (int irq) @@ -89,6 +93,19 @@ free_irq_vector (int vector) printk(KERN_WARNING "%s: double free!\n", __FUNCTION__); } +int +reserve_irq_vector (int vector) +{ + int pos; + + if (vector < IA64_FIRST_DEVICE_VECTOR || + vector > IA64_LAST_DEVICE_VECTOR) + return -EINVAL; + + pos = vector - IA64_FIRST_DEVICE_VECTOR; + return test_and_set_bit(pos, ia64_vector_mask); +} + #ifdef CONFIG_SMP # define IS_RESCHEDULE(vec) (vec == IA64_IPI_RESCHEDULE) #else diff --git a/arch/ia64/sn/kernel/irq.c b/arch/ia64/sn/kernel/irq.c index c265e02f5036..db187f5cdae1 100644 --- a/arch/ia64/sn/kernel/irq.c +++ b/arch/ia64/sn/kernel/irq.c @@ -202,6 +202,9 @@ void sn_irq_init(void) int i; irq_desc_t *base_desc = irq_desc; + ia64_first_device_vector = IA64_SN2_FIRST_DEVICE_VECTOR; + ia64_last_device_vector = IA64_SN2_LAST_DEVICE_VECTOR; + for (i = 0; i < NR_IRQS; i++) { if (base_desc[i].handler == &no_irq_type) { base_desc[i].handler = &irq_type_sn; @@ -285,6 +288,7 @@ void sn_irq_fixup(struct pci_dev *pci_dev, struct sn_irq_info *sn_irq_info) /* link it into the sn_irq[irq] list */ spin_lock(&sn_irq_info_lock); list_add_rcu(&sn_irq_info->list, sn_irq_lh[sn_irq_info->irq_irq]); + reserve_irq_vector(sn_irq_info->irq_irq); spin_unlock(&sn_irq_info_lock); register_intr_pda(sn_irq_info); @@ -310,8 +314,11 @@ void sn_irq_unfixup(struct pci_dev *pci_dev) spin_lock(&sn_irq_info_lock); list_del_rcu(&sn_irq_info->list); spin_unlock(&sn_irq_info_lock); + if (list_empty(sn_irq_lh[sn_irq_info->irq_irq])) + free_irq_vector(sn_irq_info->irq_irq); call_rcu(&sn_irq_info->rcu, sn_irq_info_free); pci_dev_put(pci_dev); + } static inline void -- cgit v1.2.3