mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-14 06:35:12 +00:00
Pull vector-domain into release branch
This commit is contained in:
Tony Luck
commit
f4fbfb0dda
9 changed files with 638 additions and 404 deletions
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|
@ -1885,6 +1885,9 @@ and is between 256 and 4096 characters. It is defined in the file
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vdso=1: enable VDSO (default)
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vdso=0: disable VDSO mapping
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vector= [IA-64,SMP]
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vector=percpu: enable percpu vector domain
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video= [FB] Frame buffer configuration
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See Documentation/fb/modedb.txt.
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File diff suppressed because it is too large
Load diff
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@ -35,7 +35,7 @@ void ack_bad_irq(unsigned int irq)
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#ifdef CONFIG_IA64_GENERIC
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unsigned int __ia64_local_vector_to_irq (ia64_vector vec)
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{
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return (unsigned int) vec;
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return __get_cpu_var(vector_irq)[vec];
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}
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#endif
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@ -46,6 +46,12 @@
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#define IRQ_DEBUG 0
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#define IRQ_VECTOR_UNASSIGNED (0)
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#define IRQ_UNUSED (0)
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#define IRQ_USED (1)
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#define IRQ_RSVD (2)
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/* These can be overridden in platform_irq_init */
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int ia64_first_device_vector = IA64_DEF_FIRST_DEVICE_VECTOR;
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int ia64_last_device_vector = IA64_DEF_LAST_DEVICE_VECTOR;
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@ -54,6 +60,8 @@ int ia64_last_device_vector = IA64_DEF_LAST_DEVICE_VECTOR;
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void __iomem *ipi_base_addr = ((void __iomem *)
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(__IA64_UNCACHED_OFFSET | IA64_IPI_DEFAULT_BASE_ADDR));
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static cpumask_t vector_allocation_domain(int cpu);
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/*
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* Legacy IRQ to IA-64 vector translation table.
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*/
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@ -64,46 +72,269 @@ __u8 isa_irq_to_vector_map[16] = {
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};
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EXPORT_SYMBOL(isa_irq_to_vector_map);
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static unsigned long ia64_vector_mask[BITS_TO_LONGS(IA64_MAX_DEVICE_VECTORS)];
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DEFINE_SPINLOCK(vector_lock);
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struct irq_cfg irq_cfg[NR_IRQS] __read_mostly = {
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[0 ... NR_IRQS - 1] = {
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.vector = IRQ_VECTOR_UNASSIGNED,
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.domain = CPU_MASK_NONE
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}
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};
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DEFINE_PER_CPU(int[IA64_NUM_VECTORS], vector_irq) = {
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[0 ... IA64_NUM_VECTORS - 1] = IA64_SPURIOUS_INT_VECTOR
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};
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static cpumask_t vector_table[IA64_MAX_DEVICE_VECTORS] = {
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[0 ... IA64_MAX_DEVICE_VECTORS - 1] = CPU_MASK_NONE
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};
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static int irq_status[NR_IRQS] = {
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[0 ... NR_IRQS -1] = IRQ_UNUSED
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};
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int check_irq_used(int irq)
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{
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if (irq_status[irq] == IRQ_USED)
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return 1;
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return -1;
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}
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static void reserve_irq(unsigned int irq)
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{
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unsigned long flags;
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spin_lock_irqsave(&vector_lock, flags);
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irq_status[irq] = IRQ_RSVD;
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spin_unlock_irqrestore(&vector_lock, flags);
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}
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static inline int find_unassigned_irq(void)
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{
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int irq;
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for (irq = IA64_FIRST_DEVICE_VECTOR; irq < NR_IRQS; irq++)
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if (irq_status[irq] == IRQ_UNUSED)
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return irq;
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return -ENOSPC;
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}
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static inline int find_unassigned_vector(cpumask_t domain)
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{
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cpumask_t mask;
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int pos;
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cpus_and(mask, domain, cpu_online_map);
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if (cpus_empty(mask))
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return -EINVAL;
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for (pos = 0; pos < IA64_NUM_DEVICE_VECTORS; pos++) {
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cpus_and(mask, domain, vector_table[pos]);
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if (!cpus_empty(mask))
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continue;
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return IA64_FIRST_DEVICE_VECTOR + pos;
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}
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return -ENOSPC;
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}
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static int __bind_irq_vector(int irq, int vector, cpumask_t domain)
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{
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cpumask_t mask;
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int cpu, pos;
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struct irq_cfg *cfg = &irq_cfg[irq];
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cpus_and(mask, domain, cpu_online_map);
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if (cpus_empty(mask))
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return -EINVAL;
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if ((cfg->vector == vector) && cpus_equal(cfg->domain, domain))
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return 0;
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if (cfg->vector != IRQ_VECTOR_UNASSIGNED)
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return -EBUSY;
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for_each_cpu_mask(cpu, mask)
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per_cpu(vector_irq, cpu)[vector] = irq;
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cfg->vector = vector;
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cfg->domain = domain;
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irq_status[irq] = IRQ_USED;
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pos = vector - IA64_FIRST_DEVICE_VECTOR;
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cpus_or(vector_table[pos], vector_table[pos], domain);
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return 0;
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}
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int bind_irq_vector(int irq, int vector, cpumask_t domain)
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{
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unsigned long flags;
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int ret;
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spin_lock_irqsave(&vector_lock, flags);
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ret = __bind_irq_vector(irq, vector, domain);
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spin_unlock_irqrestore(&vector_lock, flags);
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return ret;
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}
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static void __clear_irq_vector(int irq)
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{
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int vector, cpu, pos;
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cpumask_t mask;
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cpumask_t domain;
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struct irq_cfg *cfg = &irq_cfg[irq];
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BUG_ON((unsigned)irq >= NR_IRQS);
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BUG_ON(cfg->vector == IRQ_VECTOR_UNASSIGNED);
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vector = cfg->vector;
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domain = cfg->domain;
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cpus_and(mask, cfg->domain, cpu_online_map);
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for_each_cpu_mask(cpu, mask)
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per_cpu(vector_irq, cpu)[vector] = IA64_SPURIOUS_INT_VECTOR;
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cfg->vector = IRQ_VECTOR_UNASSIGNED;
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cfg->domain = CPU_MASK_NONE;
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irq_status[irq] = IRQ_UNUSED;
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pos = vector - IA64_FIRST_DEVICE_VECTOR;
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cpus_andnot(vector_table[pos], vector_table[pos], domain);
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}
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static void clear_irq_vector(int irq)
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{
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unsigned long flags;
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spin_lock_irqsave(&vector_lock, flags);
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__clear_irq_vector(irq);
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spin_unlock_irqrestore(&vector_lock, flags);
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}
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int
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assign_irq_vector (int irq)
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{
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int pos, vector;
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again:
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pos = find_first_zero_bit(ia64_vector_mask, IA64_NUM_DEVICE_VECTORS);
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vector = IA64_FIRST_DEVICE_VECTOR + pos;
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if (vector > IA64_LAST_DEVICE_VECTOR)
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return -ENOSPC;
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if (test_and_set_bit(pos, ia64_vector_mask))
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goto again;
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unsigned long flags;
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int vector, cpu;
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cpumask_t domain;
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vector = -ENOSPC;
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spin_lock_irqsave(&vector_lock, flags);
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if (irq < 0) {
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goto out;
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}
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for_each_online_cpu(cpu) {
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domain = vector_allocation_domain(cpu);
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vector = find_unassigned_vector(domain);
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if (vector >= 0)
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break;
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}
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if (vector < 0)
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goto out;
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BUG_ON(__bind_irq_vector(irq, vector, domain));
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out:
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spin_unlock_irqrestore(&vector_lock, flags);
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return vector;
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}
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void
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free_irq_vector (int vector)
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{
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int pos;
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if (vector < IA64_FIRST_DEVICE_VECTOR || vector > IA64_LAST_DEVICE_VECTOR)
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if (vector < IA64_FIRST_DEVICE_VECTOR ||
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vector > IA64_LAST_DEVICE_VECTOR)
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return;
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pos = vector - IA64_FIRST_DEVICE_VECTOR;
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if (!test_and_clear_bit(pos, ia64_vector_mask))
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printk(KERN_WARNING "%s: double free!\n", __FUNCTION__);
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clear_irq_vector(vector);
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}
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int
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reserve_irq_vector (int vector)
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{
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int pos;
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if (vector < IA64_FIRST_DEVICE_VECTOR ||
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vector > IA64_LAST_DEVICE_VECTOR)
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return -EINVAL;
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return !!bind_irq_vector(vector, vector, CPU_MASK_ALL);
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}
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pos = vector - IA64_FIRST_DEVICE_VECTOR;
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return test_and_set_bit(pos, ia64_vector_mask);
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/*
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* Initialize vector_irq on a new cpu. This function must be called
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* with vector_lock held.
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*/
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void __setup_vector_irq(int cpu)
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{
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int irq, vector;
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/* Clear vector_irq */
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for (vector = 0; vector < IA64_NUM_VECTORS; ++vector)
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per_cpu(vector_irq, cpu)[vector] = IA64_SPURIOUS_INT_VECTOR;
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/* Mark the inuse vectors */
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for (irq = 0; irq < NR_IRQS; ++irq) {
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if (!cpu_isset(cpu, irq_cfg[irq].domain))
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continue;
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vector = irq_to_vector(irq);
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per_cpu(vector_irq, cpu)[vector] = irq;
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}
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}
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#if defined(CONFIG_SMP) && (defined(CONFIG_IA64_GENERIC) || defined(CONFIG_IA64_DIG))
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static enum vector_domain_type {
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VECTOR_DOMAIN_NONE,
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VECTOR_DOMAIN_PERCPU
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} vector_domain_type = VECTOR_DOMAIN_NONE;
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static cpumask_t vector_allocation_domain(int cpu)
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{
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if (vector_domain_type == VECTOR_DOMAIN_PERCPU)
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return cpumask_of_cpu(cpu);
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return CPU_MASK_ALL;
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}
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static int __init parse_vector_domain(char *arg)
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{
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if (!arg)
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return -EINVAL;
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if (!strcmp(arg, "percpu")) {
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vector_domain_type = VECTOR_DOMAIN_PERCPU;
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no_int_routing = 1;
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}
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return 1;
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}
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early_param("vector", parse_vector_domain);
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#else
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static cpumask_t vector_allocation_domain(int cpu)
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{
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return CPU_MASK_ALL;
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}
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#endif
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void destroy_and_reserve_irq(unsigned int irq)
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{
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dynamic_irq_cleanup(irq);
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clear_irq_vector(irq);
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reserve_irq(irq);
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}
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static int __reassign_irq_vector(int irq, int cpu)
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{
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struct irq_cfg *cfg = &irq_cfg[irq];
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int vector;
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cpumask_t domain;
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if (cfg->vector == IRQ_VECTOR_UNASSIGNED || !cpu_online(cpu))
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return -EINVAL;
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if (cpu_isset(cpu, cfg->domain))
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return 0;
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domain = vector_allocation_domain(cpu);
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vector = find_unassigned_vector(domain);
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if (vector < 0)
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return -ENOSPC;
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__clear_irq_vector(irq);
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BUG_ON(__bind_irq_vector(irq, vector, domain));
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return 0;
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}
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int reassign_irq_vector(int irq, int cpu)
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{
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unsigned long flags;
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int ret;
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spin_lock_irqsave(&vector_lock, flags);
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ret = __reassign_irq_vector(irq, cpu);
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spin_unlock_irqrestore(&vector_lock, flags);
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return ret;
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}
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|
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/*
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@ -111,18 +342,35 @@ reserve_irq_vector (int vector)
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*/
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int create_irq(void)
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||||
{
|
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int vector = assign_irq_vector(AUTO_ASSIGN);
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unsigned long flags;
|
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int irq, vector, cpu;
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cpumask_t domain;
|
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|
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if (vector >= 0)
|
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dynamic_irq_init(vector);
|
||||
|
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return vector;
|
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irq = vector = -ENOSPC;
|
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spin_lock_irqsave(&vector_lock, flags);
|
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for_each_online_cpu(cpu) {
|
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domain = vector_allocation_domain(cpu);
|
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vector = find_unassigned_vector(domain);
|
||||
if (vector >= 0)
|
||||
break;
|
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}
|
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if (vector < 0)
|
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goto out;
|
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irq = find_unassigned_irq();
|
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if (irq < 0)
|
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goto out;
|
||||
BUG_ON(__bind_irq_vector(irq, vector, domain));
|
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out:
|
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spin_unlock_irqrestore(&vector_lock, flags);
|
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if (irq >= 0)
|
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dynamic_irq_init(irq);
|
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return irq;
|
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}
|
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|
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void destroy_irq(unsigned int irq)
|
||||
{
|
||||
dynamic_irq_cleanup(irq);
|
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free_irq_vector(irq);
|
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clear_irq_vector(irq);
|
||||
}
|
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|
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#ifdef CONFIG_SMP
|
||||
|
|
@ -301,14 +549,13 @@ register_percpu_irq (ia64_vector vec, struct irqaction *action)
|
|||
irq_desc_t *desc;
|
||||
unsigned int irq;
|
||||
|
||||
for (irq = 0; irq < NR_IRQS; ++irq)
|
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if (irq_to_vector(irq) == vec) {
|
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desc = irq_desc + irq;
|
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desc->status |= IRQ_PER_CPU;
|
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desc->chip = &irq_type_ia64_lsapic;
|
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if (action)
|
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setup_irq(irq, action);
|
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}
|
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irq = vec;
|
||||
BUG_ON(bind_irq_vector(irq, vec, CPU_MASK_ALL));
|
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desc = irq_desc + irq;
|
||||
desc->status |= IRQ_PER_CPU;
|
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desc->chip = &irq_type_ia64_lsapic;
|
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if (action)
|
||||
setup_irq(irq, action);
|
||||
}
|
||||
|
||||
void __init
|
||||
|
|
|
|||
|
|
@ -13,6 +13,7 @@
|
|||
|
||||
#define MSI_DATA_VECTOR_SHIFT 0
|
||||
#define MSI_DATA_VECTOR(v) (((u8)v) << MSI_DATA_VECTOR_SHIFT)
|
||||
#define MSI_DATA_VECTOR_MASK 0xffffff00
|
||||
|
||||
#define MSI_DATA_DELIVERY_SHIFT 8
|
||||
#define MSI_DATA_DELIVERY_FIXED (0 << MSI_DATA_DELIVERY_SHIFT)
|
||||
|
|
@ -50,17 +51,29 @@ static struct irq_chip ia64_msi_chip;
|
|||
static void ia64_set_msi_irq_affinity(unsigned int irq, cpumask_t cpu_mask)
|
||||
{
|
||||
struct msi_msg msg;
|
||||
u32 addr;
|
||||
u32 addr, data;
|
||||
int cpu = first_cpu(cpu_mask);
|
||||
|
||||
if (!cpu_online(cpu))
|
||||
return;
|
||||
|
||||
if (reassign_irq_vector(irq, cpu))
|
||||
return;
|
||||
|
||||
read_msi_msg(irq, &msg);
|
||||
|
||||
addr = msg.address_lo;
|
||||
addr &= MSI_ADDR_DESTID_MASK;
|
||||
addr |= MSI_ADDR_DESTID_CPU(cpu_physical_id(first_cpu(cpu_mask)));
|
||||
addr |= MSI_ADDR_DESTID_CPU(cpu_physical_id(cpu));
|
||||
msg.address_lo = addr;
|
||||
|
||||
data = msg.data;
|
||||
data &= MSI_DATA_VECTOR_MASK;
|
||||
data |= MSI_DATA_VECTOR(irq_to_vector(irq));
|
||||
msg.data = data;
|
||||
|
||||
write_msi_msg(irq, &msg);
|
||||
irq_desc[irq].affinity = cpu_mask;
|
||||
irq_desc[irq].affinity = cpumask_of_cpu(cpu);
|
||||
}
|
||||
#endif /* CONFIG_SMP */
|
||||
|
||||
|
|
@ -69,13 +82,15 @@ int ia64_setup_msi_irq(struct pci_dev *pdev, struct msi_desc *desc)
|
|||
struct msi_msg msg;
|
||||
unsigned long dest_phys_id;
|
||||
int irq, vector;
|
||||
cpumask_t mask;
|
||||
|
||||
irq = create_irq();
|
||||
if (irq < 0)
|
||||
return irq;
|
||||
|
||||
set_irq_msi(irq, desc);
|
||||
dest_phys_id = cpu_physical_id(first_cpu(cpu_online_map));
|
||||
cpus_and(mask, irq_to_domain(irq), cpu_online_map);
|
||||
dest_phys_id = cpu_physical_id(first_cpu(mask));
|
||||
vector = irq_to_vector(irq);
|
||||
|
||||
msg.address_hi = 0;
|
||||
|
|
|
|||
|
|
@ -395,9 +395,13 @@ smp_callin (void)
|
|||
fix_b0_for_bsp();
|
||||
|
||||
lock_ipi_calllock();
|
||||
spin_lock(&vector_lock);
|
||||
/* Setup the per cpu irq handling data structures */
|
||||
__setup_vector_irq(cpuid);
|
||||
cpu_set(cpuid, cpu_online_map);
|
||||
unlock_ipi_calllock();
|
||||
per_cpu(cpu_state, cpuid) = CPU_ONLINE;
|
||||
spin_unlock(&vector_lock);
|
||||
|
||||
smp_setup_percpu_timer();
|
||||
|
||||
|
|
|
|||
|
|
@ -90,13 +90,27 @@ enum {
|
|||
extern __u8 isa_irq_to_vector_map[16];
|
||||
#define isa_irq_to_vector(x) isa_irq_to_vector_map[(x)]
|
||||
|
||||
struct irq_cfg {
|
||||
ia64_vector vector;
|
||||
cpumask_t domain;
|
||||
};
|
||||
extern spinlock_t vector_lock;
|
||||
extern struct irq_cfg irq_cfg[NR_IRQS];
|
||||
#define irq_to_domain(x) irq_cfg[(x)].domain
|
||||
DECLARE_PER_CPU(int[IA64_NUM_VECTORS], vector_irq);
|
||||
|
||||
extern struct hw_interrupt_type irq_type_ia64_lsapic; /* CPU-internal interrupt controller */
|
||||
|
||||
extern int bind_irq_vector(int irq, int vector, cpumask_t domain);
|
||||
extern int assign_irq_vector (int irq); /* allocate a free vector */
|
||||
extern void free_irq_vector (int vector);
|
||||
extern int reserve_irq_vector (int vector);
|
||||
extern void __setup_vector_irq(int cpu);
|
||||
extern int reassign_irq_vector(int irq, int cpu);
|
||||
extern void ia64_send_ipi (int cpu, int vector, int delivery_mode, int redirect);
|
||||
extern void register_percpu_irq (ia64_vector vec, struct irqaction *action);
|
||||
extern int check_irq_used (int irq);
|
||||
extern void destroy_and_reserve_irq (unsigned int irq);
|
||||
|
||||
static inline void ia64_resend_irq(unsigned int vector)
|
||||
{
|
||||
|
|
@ -113,7 +127,7 @@ extern irq_desc_t irq_desc[NR_IRQS];
|
|||
static inline unsigned int
|
||||
__ia64_local_vector_to_irq (ia64_vector vec)
|
||||
{
|
||||
return (unsigned int) vec;
|
||||
return __get_cpu_var(vector_irq)[vec];
|
||||
}
|
||||
#endif
|
||||
|
||||
|
|
@ -131,7 +145,7 @@ __ia64_local_vector_to_irq (ia64_vector vec)
|
|||
static inline ia64_vector
|
||||
irq_to_vector (int irq)
|
||||
{
|
||||
return (ia64_vector) irq;
|
||||
return irq_cfg[irq].vector;
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
|
|||
|
|
@ -47,19 +47,21 @@
|
|||
#define IOSAPIC_MASK_SHIFT 16
|
||||
#define IOSAPIC_MASK (1<<IOSAPIC_MASK_SHIFT)
|
||||
|
||||
#define IOSAPIC_VECTOR_MASK 0xffffff00
|
||||
|
||||
#ifndef __ASSEMBLY__
|
||||
|
||||
#ifdef CONFIG_IOSAPIC
|
||||
|
||||
#define NR_IOSAPICS 256
|
||||
|
||||
static inline unsigned int iosapic_read(char __iomem *iosapic, unsigned int reg)
|
||||
static inline unsigned int __iosapic_read(char __iomem *iosapic, unsigned int reg)
|
||||
{
|
||||
writel(reg, iosapic + IOSAPIC_REG_SELECT);
|
||||
return readl(iosapic + IOSAPIC_WINDOW);
|
||||
}
|
||||
|
||||
static inline void iosapic_write(char __iomem *iosapic, unsigned int reg, u32 val)
|
||||
static inline void __iosapic_write(char __iomem *iosapic, unsigned int reg, u32 val)
|
||||
{
|
||||
writel(reg, iosapic + IOSAPIC_REG_SELECT);
|
||||
writel(val, iosapic + IOSAPIC_WINDOW);
|
||||
|
|
|
|||
|
|
@ -14,8 +14,13 @@
|
|||
#include <linux/types.h>
|
||||
#include <linux/cpumask.h>
|
||||
|
||||
#define NR_IRQS 256
|
||||
#define NR_IRQ_VECTORS NR_IRQS
|
||||
#define NR_VECTORS 256
|
||||
|
||||
#if (NR_VECTORS + 32 * NR_CPUS) < 1024
|
||||
#define NR_IRQS (NR_VECTORS + 32 * NR_CPUS)
|
||||
#else
|
||||
#define NR_IRQS 1024
|
||||
#endif
|
||||
|
||||
static __inline__ int
|
||||
irq_canonicalize (int irq)
|
||||
|
|
|
|||
Loading…
Reference in a new issue