x86: make 32bit to use irq_2_pin in irq_cfg
so it is more like 64 bit. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Yinghai Lu
Ingo Molnar
parent
da51a82131
commit
0f978f4505
1 changed files with 118 additions and 36 deletions
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@ -95,10 +95,11 @@ DECLARE_BITMAP(mp_bus_not_pci, MAX_MP_BUSSES);
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static int disable_timer_pin_1 __initdata;
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struct irq_cfg;
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struct irq_pin_list;
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struct irq_cfg {
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unsigned int irq;
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struct irq_cfg *next;
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struct irq_pin_list *irq_2_pin;
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u8 vector;
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};
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@ -275,11 +276,66 @@ int pin_map_size;
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* between pins and IRQs.
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*/
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static struct irq_pin_list {
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int apic, pin, next;
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} *irq_2_pin;
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struct irq_pin_list {
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int apic, pin;
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struct irq_pin_list *next;
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};
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DEFINE_DYN_ARRAY(irq_2_pin, sizeof(struct irq_pin_list), pin_map_size, 16, NULL);
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static struct irq_pin_list *irq_2_pin_head;
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/* fill one page ? */
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static int nr_irq_2_pin = 0x100;
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static struct irq_pin_list *irq_2_pin_ptr;
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static void __init irq_2_pin_init_work(void *data)
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{
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struct dyn_array *da = data;
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struct irq_pin_list *pin;
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int i;
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pin = *da->name;
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for (i = 1; i < *da->nr; i++)
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pin[i-1].next = &pin[i];
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irq_2_pin_ptr = &pin[0];
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}
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DEFINE_DYN_ARRAY(irq_2_pin_head, sizeof(struct irq_pin_list), nr_irq_2_pin, PAGE_SIZE, irq_2_pin_init_work);
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static struct irq_pin_list *get_one_free_irq_2_pin(void)
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{
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struct irq_pin_list *pin;
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int i;
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pin = irq_2_pin_ptr;
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if (pin) {
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irq_2_pin_ptr = pin->next;
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pin->next = NULL;
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return pin;
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}
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/*
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* we run out of pre-allocate ones, allocate more
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*/
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printk(KERN_DEBUG "try to get more irq_2_pin %d\n", nr_irq_2_pin);
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if (after_bootmem)
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pin = kzalloc(sizeof(struct irq_pin_list)*nr_irq_2_pin,
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GFP_ATOMIC);
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else
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pin = __alloc_bootmem_nopanic(sizeof(struct irq_pin_list) *
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nr_irq_2_pin, PAGE_SIZE, 0);
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if (!pin)
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panic("can not get more irq_2_pin\n");
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for (i = 1; i < nr_irq_2_pin; i++)
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pin[i-1].next = &pin[i];
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irq_2_pin_ptr = pin->next;
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pin->next = NULL;
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return pin;
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}
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struct io_apic {
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unsigned int index;
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@ -383,20 +439,34 @@ static void ioapic_mask_entry(int apic, int pin)
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*/
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static void add_pin_to_irq(unsigned int irq, int apic, int pin)
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{
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struct irq_pin_list *entry = irq_2_pin + irq;
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struct irq_cfg *cfg;
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struct irq_pin_list *entry;
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irq_cfg_alloc(irq);
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while (entry->next)
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entry = irq_2_pin + entry->next;
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if (entry->pin != -1) {
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entry->next = first_free_entry;
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entry = irq_2_pin + entry->next;
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if (++first_free_entry >= pin_map_size)
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panic("io_apic.c: whoops");
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/* first time to refer irq_cfg, so with new */
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cfg = irq_cfg_alloc(irq);
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entry = cfg->irq_2_pin;
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if (!entry) {
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entry = get_one_free_irq_2_pin();
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cfg->irq_2_pin = entry;
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entry->apic = apic;
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entry->pin = pin;
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printk(KERN_DEBUG " 0 add_pin_to_irq: irq %d --> apic %d pin %d\n", irq, apic, pin);
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return;
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}
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while (entry->next) {
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/* not again, please */
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if (entry->apic == apic && entry->pin == pin)
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return;
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entry = entry->next;
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}
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entry->next = get_one_free_irq_2_pin();
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entry = entry->next;
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entry->apic = apic;
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entry->pin = pin;
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printk(KERN_DEBUG " x add_pin_to_irq: irq %d --> apic %d pin %d\n", irq, apic, pin);
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}
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/*
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@ -406,35 +476,45 @@ static void __init replace_pin_at_irq(unsigned int irq,
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int oldapic, int oldpin,
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int newapic, int newpin)
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{
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struct irq_pin_list *entry = irq_2_pin + irq;
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struct irq_cfg *cfg = irq_cfg(irq);
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struct irq_pin_list *entry = cfg->irq_2_pin;
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int replaced = 0;
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while (1) {
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while (entry) {
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if (entry->apic == oldapic && entry->pin == oldpin) {
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entry->apic = newapic;
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entry->pin = newpin;
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}
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if (!entry->next)
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replaced = 1;
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/* every one is different, right? */
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break;
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entry = irq_2_pin + entry->next;
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}
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entry = entry->next;
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}
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/* why? call replace before add? */
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if (!replaced)
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add_pin_to_irq(irq, newapic, newpin);
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}
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static void __modify_IO_APIC_irq(unsigned int irq, unsigned long enable, unsigned long disable)
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{
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struct irq_pin_list *entry = irq_2_pin + irq;
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struct irq_cfg *cfg;
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struct irq_pin_list *entry;
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unsigned int pin, reg;
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cfg = irq_cfg(irq);
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entry = cfg->irq_2_pin;
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for (;;) {
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pin = entry->pin;
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if (pin == -1)
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if (!entry)
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break;
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pin = entry->pin;
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reg = io_apic_read(entry->apic, 0x10 + pin*2);
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reg &= ~disable;
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reg |= enable;
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io_apic_modify(entry->apic, 0x10 + pin*2, reg);
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if (!entry->next)
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break;
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entry = irq_2_pin + entry->next;
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entry = entry->next;
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}
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}
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@ -509,13 +589,18 @@ static void clear_IO_APIC(void)
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#ifdef CONFIG_SMP
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static void set_ioapic_affinity_irq(unsigned int irq, cpumask_t cpumask)
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{
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struct irq_cfg *cfg;
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unsigned long flags;
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int pin;
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struct irq_pin_list *entry = irq_2_pin + irq;
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struct irq_pin_list *entry;
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unsigned int apicid_value;
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cpumask_t tmp;
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struct irq_desc *desc;
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cfg = irq_cfg(irq);
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entry = cfg->irq_2_pin;
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cpus_and(tmp, cpumask, cpu_online_map);
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if (cpus_empty(tmp))
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tmp = TARGET_CPUS;
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@ -527,13 +612,13 @@ static void set_ioapic_affinity_irq(unsigned int irq, cpumask_t cpumask)
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apicid_value = apicid_value << 24;
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spin_lock_irqsave(&ioapic_lock, flags);
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for (;;) {
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pin = entry->pin;
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if (pin == -1)
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if (!entry)
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break;
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pin = entry->pin;
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io_apic_write(entry->apic, 0x10 + 1 + pin*2, apicid_value);
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if (!entry->next)
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break;
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entry = irq_2_pin + entry->next;
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entry = entry->next;
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}
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desc = irq_to_desc(irq);
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desc->affinity = cpumask;
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@ -1152,6 +1237,7 @@ __apicdebuginit(void) print_IO_APIC(void)
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union IO_APIC_reg_02 reg_02;
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union IO_APIC_reg_03 reg_03;
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unsigned long flags;
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struct irq_cfg *cfg;
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if (apic_verbosity == APIC_QUIET)
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return;
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@ -1240,16 +1326,16 @@ __apicdebuginit(void) print_IO_APIC(void)
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}
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}
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printk(KERN_DEBUG "IRQ to pin mappings:\n");
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for (i = 0; i < nr_irqs; i++) {
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struct irq_pin_list *entry = irq_2_pin + i;
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if (entry->pin < 0)
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for_each_irq_cfg(cfg) {
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struct irq_pin_list *entry = cfg->irq_2_pin;
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if (!entry)
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continue;
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printk(KERN_DEBUG "IRQ%d ", i);
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for (;;) {
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printk("-> %d:%d", entry->apic, entry->pin);
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if (!entry->next)
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break;
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entry = irq_2_pin + entry->next;
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entry = entry->next;
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}
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printk("\n");
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}
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@ -1420,10 +1506,6 @@ static void __init enable_IO_APIC(void)
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int i, apic;
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unsigned long flags;
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for (i = 0; i < pin_map_size; i++) {
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irq_2_pin[i].pin = -1;
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irq_2_pin[i].next = 0;
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}
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if (!pirqs_enabled)
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for (i = 0; i < MAX_PIRQS; i++)
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pirq_entries[i] = -1;
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