irq_domain: Remove references to old irq_host names
No functional changes. Replaces non-exported references to 'host' with domain. Does not change any symbol names referenced by other .c files. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Milton Miller <miltonm@bga.com> Tested-by: Olof Johansson <olof@lixom.net>
This commit is contained in:
Grant Likely
parent
03848373ea
commit
68700650e7
1 changed files with 108 additions and 111 deletions
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@ -19,11 +19,11 @@ static DEFINE_MUTEX(irq_domain_mutex);
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#ifdef CONFIG_PPC
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static DEFINE_MUTEX(revmap_trees_mutex);
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static unsigned int irq_virq_count = NR_IRQS;
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static struct irq_domain *irq_default_host;
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static struct irq_domain *irq_default_domain;
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static int default_irq_host_match(struct irq_domain *h, struct device_node *np)
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static int default_irq_domain_match(struct irq_domain *d, struct device_node *np)
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{
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return h->of_node != NULL && h->of_node == np;
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return d->of_node != NULL && d->of_node == np;
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}
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/**
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@ -31,8 +31,8 @@ static int default_irq_host_match(struct irq_domain *h, struct device_node *np)
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* @of_node: optional device-tree node of the interrupt controller
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* @revmap_type: type of reverse mapping to use
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* @revmap_arg: for IRQ_DOMAIN_MAP_LINEAR linear only: size of the map
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* @ops: map/unmap host callbacks
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* @inval_irq: provide a hw number in that host space that is always invalid
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* @ops: map/unmap domain callbacks
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* @inval_irq: provide a hw number in that domain space that is always invalid
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*
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* Allocates and initialize and irq_domain structure. Note that in the case of
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* IRQ_DOMAIN_MAP_LEGACY, the map() callback will be called before this returns
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@ -48,7 +48,7 @@ struct irq_domain *irq_alloc_host(struct device_node *of_node,
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struct irq_domain_ops *ops,
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irq_hw_number_t inval_irq)
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{
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struct irq_domain *host, *h;
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struct irq_domain *domain, *h;
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unsigned int size = sizeof(struct irq_domain);
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unsigned int i;
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unsigned int *rmap;
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@ -56,18 +56,18 @@ struct irq_domain *irq_alloc_host(struct device_node *of_node,
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/* Allocate structure and revmap table if using linear mapping */
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if (revmap_type == IRQ_DOMAIN_MAP_LINEAR)
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size += revmap_arg * sizeof(unsigned int);
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host = kzalloc(size, GFP_KERNEL);
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if (host == NULL)
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domain = kzalloc(size, GFP_KERNEL);
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if (domain == NULL)
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return NULL;
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/* Fill structure */
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host->revmap_type = revmap_type;
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host->inval_irq = inval_irq;
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host->ops = ops;
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host->of_node = of_node_get(of_node);
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domain->revmap_type = revmap_type;
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domain->inval_irq = inval_irq;
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domain->ops = ops;
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domain->of_node = of_node_get(of_node);
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if (host->ops->match == NULL)
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host->ops->match = default_irq_host_match;
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if (domain->ops->match == NULL)
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domain->ops->match = default_irq_domain_match;
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mutex_lock(&irq_domain_mutex);
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/* Make sure only one legacy controller can be created */
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@ -75,53 +75,53 @@ struct irq_domain *irq_alloc_host(struct device_node *of_node,
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list_for_each_entry(h, &irq_domain_list, link) {
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if (WARN_ON(h->revmap_type == IRQ_DOMAIN_MAP_LEGACY)) {
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mutex_unlock(&irq_domain_mutex);
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of_node_put(host->of_node);
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kfree(host);
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of_node_put(domain->of_node);
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kfree(domain);
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return NULL;
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}
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}
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}
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list_add(&host->link, &irq_domain_list);
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list_add(&domain->link, &irq_domain_list);
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mutex_unlock(&irq_domain_mutex);
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/* Additional setups per revmap type */
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switch(revmap_type) {
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case IRQ_DOMAIN_MAP_LEGACY:
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/* 0 is always the invalid number for legacy */
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host->inval_irq = 0;
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/* setup us as the host for all legacy interrupts */
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domain->inval_irq = 0;
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/* setup us as the domain for all legacy interrupts */
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for (i = 1; i < NUM_ISA_INTERRUPTS; i++) {
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struct irq_data *irq_data = irq_get_irq_data(i);
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irq_data->hwirq = i;
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irq_data->domain = host;
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irq_data->domain = domain;
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/* Legacy flags are left to default at this point,
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* one can then use irq_create_mapping() to
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* explicitly change them
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*/
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ops->map(host, i, i);
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ops->map(domain, i, i);
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/* Clear norequest flags */
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irq_clear_status_flags(i, IRQ_NOREQUEST);
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}
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break;
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case IRQ_DOMAIN_MAP_LINEAR:
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rmap = (unsigned int *)(host + 1);
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rmap = (unsigned int *)(domain + 1);
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for (i = 0; i < revmap_arg; i++)
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rmap[i] = 0;
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host->revmap_data.linear.size = revmap_arg;
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host->revmap_data.linear.revmap = rmap;
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domain->revmap_data.linear.size = revmap_arg;
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domain->revmap_data.linear.revmap = rmap;
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break;
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case IRQ_DOMAIN_MAP_TREE:
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INIT_RADIX_TREE(&host->revmap_data.tree, GFP_KERNEL);
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INIT_RADIX_TREE(&domain->revmap_data.tree, GFP_KERNEL);
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break;
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default:
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break;
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}
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pr_debug("irq: Allocated host of type %d @0x%p\n", revmap_type, host);
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pr_debug("irq: Allocated domain of type %d @0x%p\n", revmap_type, domain);
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return host;
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return domain;
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}
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/**
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@ -150,18 +150,18 @@ EXPORT_SYMBOL_GPL(irq_find_host);
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/**
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* irq_set_default_host() - Set a "default" irq domain
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* @host: default host pointer
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* @domain: default domain pointer
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*
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* For convenience, it's possible to set a "default" domain that will be used
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* whenever NULL is passed to irq_create_mapping(). It makes life easier for
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* platforms that want to manipulate a few hard coded interrupt numbers that
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* aren't properly represented in the device-tree.
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*/
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void irq_set_default_host(struct irq_domain *host)
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void irq_set_default_host(struct irq_domain *domain)
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{
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pr_debug("irq: Default host set to @0x%p\n", host);
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pr_debug("irq: Default domain set to @0x%p\n", domain);
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irq_default_host = host;
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irq_default_domain = domain;
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}
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/**
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@ -180,14 +180,14 @@ void irq_set_virq_count(unsigned int count)
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irq_virq_count = count;
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}
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static int irq_setup_virq(struct irq_domain *host, unsigned int virq,
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static int irq_setup_virq(struct irq_domain *domain, unsigned int virq,
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irq_hw_number_t hwirq)
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{
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struct irq_data *irq_data = irq_get_irq_data(virq);
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irq_data->hwirq = hwirq;
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irq_data->domain = host;
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if (host->ops->map(host, virq, hwirq)) {
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irq_data->domain = domain;
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if (domain->ops->map(domain, virq, hwirq)) {
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pr_debug("irq: -> mapping failed, freeing\n");
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irq_data->domain = NULL;
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irq_data->hwirq = 0;
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@ -201,21 +201,21 @@ static int irq_setup_virq(struct irq_domain *host, unsigned int virq,
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/**
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* irq_create_direct_mapping() - Allocate an irq for direct mapping
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* @host: domain to allocate the irq for or NULL for default host
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* @domain: domain to allocate the irq for or NULL for default domain
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*
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* This routine is used for irq controllers which can choose the hardware
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* interrupt numbers they generate. In such a case it's simplest to use
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* the linux irq as the hardware interrupt number.
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*/
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unsigned int irq_create_direct_mapping(struct irq_domain *host)
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unsigned int irq_create_direct_mapping(struct irq_domain *domain)
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{
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unsigned int virq;
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if (host == NULL)
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host = irq_default_host;
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if (domain == NULL)
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domain = irq_default_domain;
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BUG_ON(host == NULL);
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WARN_ON(host->revmap_type != IRQ_DOMAIN_MAP_NOMAP);
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BUG_ON(domain == NULL);
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WARN_ON(domain->revmap_type != IRQ_DOMAIN_MAP_NOMAP);
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virq = irq_alloc_desc_from(1, 0);
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if (!virq) {
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@ -231,7 +231,7 @@ unsigned int irq_create_direct_mapping(struct irq_domain *host)
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pr_debug("irq: create_direct obtained virq %d\n", virq);
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if (irq_setup_virq(host, virq, virq)) {
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if (irq_setup_virq(domain, virq, virq)) {
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irq_free_desc(virq);
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return 0;
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}
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@ -241,41 +241,41 @@ unsigned int irq_create_direct_mapping(struct irq_domain *host)
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/**
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* irq_create_mapping() - Map a hardware interrupt into linux irq space
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* @host: host owning this hardware interrupt or NULL for default host
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* @hwirq: hardware irq number in that host space
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* @domain: domain owning this hardware interrupt or NULL for default domain
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* @hwirq: hardware irq number in that domain space
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*
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* Only one mapping per hardware interrupt is permitted. Returns a linux
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* irq number.
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* If the sense/trigger is to be specified, set_irq_type() should be called
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* on the number returned from that call.
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*/
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unsigned int irq_create_mapping(struct irq_domain *host,
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unsigned int irq_create_mapping(struct irq_domain *domain,
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irq_hw_number_t hwirq)
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{
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unsigned int virq, hint;
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pr_debug("irq: irq_create_mapping(0x%p, 0x%lx)\n", host, hwirq);
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pr_debug("irq: irq_create_mapping(0x%p, 0x%lx)\n", domain, hwirq);
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/* Look for default host if nececssary */
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if (host == NULL)
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host = irq_default_host;
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if (host == NULL) {
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/* Look for default domain if nececssary */
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if (domain == NULL)
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domain = irq_default_domain;
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if (domain == NULL) {
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printk(KERN_WARNING "irq_create_mapping called for"
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" NULL host, hwirq=%lx\n", hwirq);
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" NULL domain, hwirq=%lx\n", hwirq);
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WARN_ON(1);
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return 0;
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}
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pr_debug("irq: -> using host @%p\n", host);
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pr_debug("irq: -> using domain @%p\n", domain);
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/* Check if mapping already exists */
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virq = irq_find_mapping(host, hwirq);
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virq = irq_find_mapping(domain, hwirq);
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if (virq) {
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pr_debug("irq: -> existing mapping on virq %d\n", virq);
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return virq;
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}
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/* Get a virtual interrupt number */
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if (host->revmap_type == IRQ_DOMAIN_MAP_LEGACY) {
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if (domain->revmap_type == IRQ_DOMAIN_MAP_LEGACY) {
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/* Handle legacy */
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virq = (unsigned int)hwirq;
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if (virq == 0 || virq >= NUM_ISA_INTERRUPTS)
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@ -295,14 +295,14 @@ unsigned int irq_create_mapping(struct irq_domain *host,
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}
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}
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if (irq_setup_virq(host, virq, hwirq)) {
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if (host->revmap_type != IRQ_DOMAIN_MAP_LEGACY)
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if (irq_setup_virq(domain, virq, hwirq)) {
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if (domain->revmap_type != IRQ_DOMAIN_MAP_LEGACY)
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irq_free_desc(virq);
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return 0;
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}
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pr_debug("irq: irq %lu on host %s mapped to virtual irq %u\n",
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hwirq, host->of_node ? host->of_node->full_name : "null", virq);
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pr_debug("irq: irq %lu on domain %s mapped to virtual irq %u\n",
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hwirq, domain->of_node ? domain->of_node->full_name : "null", virq);
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return virq;
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}
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@ -311,32 +311,29 @@ EXPORT_SYMBOL_GPL(irq_create_mapping);
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unsigned int irq_create_of_mapping(struct device_node *controller,
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const u32 *intspec, unsigned int intsize)
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{
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struct irq_domain *host;
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struct irq_domain *domain;
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irq_hw_number_t hwirq;
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unsigned int type = IRQ_TYPE_NONE;
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unsigned int virq;
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if (controller == NULL)
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host = irq_default_host;
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else
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host = irq_find_host(controller);
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if (host == NULL) {
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printk(KERN_WARNING "irq: no irq host found for %s !\n",
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domain = controller ? irq_find_host(controller) : irq_default_domain;
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if (!domain) {
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printk(KERN_WARNING "irq: no irq domain found for %s !\n",
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controller->full_name);
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return 0;
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}
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/* If host has no translation, then we assume interrupt line */
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if (host->ops->xlate == NULL)
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/* If domain has no translation, then we assume interrupt line */
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if (domain->ops->xlate == NULL)
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hwirq = intspec[0];
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else {
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if (host->ops->xlate(host, controller, intspec, intsize,
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if (domain->ops->xlate(domain, controller, intspec, intsize,
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&hwirq, &type))
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return 0;
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}
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/* Create mapping */
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virq = irq_create_mapping(host, hwirq);
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virq = irq_create_mapping(domain, hwirq);
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if (!virq)
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return virq;
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@ -355,18 +352,18 @@ EXPORT_SYMBOL_GPL(irq_create_of_mapping);
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void irq_dispose_mapping(unsigned int virq)
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{
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struct irq_data *irq_data = irq_get_irq_data(virq);
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struct irq_domain *host;
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struct irq_domain *domain;
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irq_hw_number_t hwirq;
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if (!virq || !irq_data)
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return;
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host = irq_data->domain;
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if (WARN_ON(host == NULL))
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domain = irq_data->domain;
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if (WARN_ON(domain == NULL))
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return;
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/* Never unmap legacy interrupts */
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if (host->revmap_type == IRQ_DOMAIN_MAP_LEGACY)
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if (domain->revmap_type == IRQ_DOMAIN_MAP_LEGACY)
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return;
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irq_set_status_flags(virq, IRQ_NOREQUEST);
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@ -378,26 +375,26 @@ void irq_dispose_mapping(unsigned int virq)
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synchronize_irq(virq);
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/* Tell the PIC about it */
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if (host->ops->unmap)
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host->ops->unmap(host, virq);
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if (domain->ops->unmap)
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domain->ops->unmap(domain, virq);
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smp_mb();
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/* Clear reverse map */
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hwirq = irq_data->hwirq;
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switch(host->revmap_type) {
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switch(domain->revmap_type) {
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case IRQ_DOMAIN_MAP_LINEAR:
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if (hwirq < host->revmap_data.linear.size)
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host->revmap_data.linear.revmap[hwirq] = 0;
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if (hwirq < domain->revmap_data.linear.size)
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domain->revmap_data.linear.revmap[hwirq] = 0;
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break;
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case IRQ_DOMAIN_MAP_TREE:
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mutex_lock(&revmap_trees_mutex);
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radix_tree_delete(&host->revmap_data.tree, hwirq);
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radix_tree_delete(&domain->revmap_data.tree, hwirq);
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mutex_unlock(&revmap_trees_mutex);
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break;
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}
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/* Destroy map */
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irq_data->hwirq = host->inval_irq;
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irq_data->hwirq = domain->inval_irq;
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irq_free_desc(virq);
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}
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@ -405,27 +402,27 @@ EXPORT_SYMBOL_GPL(irq_dispose_mapping);
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/**
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* irq_find_mapping() - Find a linux irq from an hw irq number.
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* @host: domain owning this hardware interrupt
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* @hwirq: hardware irq number in that host space
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* @domain: domain owning this hardware interrupt
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* @hwirq: hardware irq number in that domain space
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*
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* This is a slow path, for use by generic code. It's expected that an
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* irq controller implementation directly calls the appropriate low level
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* mapping function.
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*/
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unsigned int irq_find_mapping(struct irq_domain *host,
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unsigned int irq_find_mapping(struct irq_domain *domain,
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irq_hw_number_t hwirq)
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{
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unsigned int i;
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unsigned int hint = hwirq % irq_virq_count;
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/* Look for default host if nececssary */
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if (host == NULL)
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host = irq_default_host;
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if (host == NULL)
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/* Look for default domain if nececssary */
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if (domain == NULL)
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domain = irq_default_domain;
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if (domain == NULL)
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return 0;
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/* legacy -> bail early */
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if (host->revmap_type == IRQ_DOMAIN_MAP_LEGACY)
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if (domain->revmap_type == IRQ_DOMAIN_MAP_LEGACY)
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return hwirq;
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/* Slow path does a linear search of the map */
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@ -434,7 +431,7 @@ unsigned int irq_find_mapping(struct irq_domain *host,
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i = hint;
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do {
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struct irq_data *data = irq_get_irq_data(i);
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if (data && (data->domain == host) && (data->hwirq == hwirq))
|
||||
if (data && (data->domain == domain) && (data->hwirq == hwirq))
|
||||
return i;
|
||||
i++;
|
||||
if (i >= irq_virq_count)
|
||||
|
|
@ -446,26 +443,26 @@ EXPORT_SYMBOL_GPL(irq_find_mapping);
|
|||
|
||||
/**
|
||||
* irq_radix_revmap_lookup() - Find a linux irq from a hw irq number.
|
||||
* @host: host owning this hardware interrupt
|
||||
* @hwirq: hardware irq number in that host space
|
||||
* @domain: domain owning this hardware interrupt
|
||||
* @hwirq: hardware irq number in that domain space
|
||||
*
|
||||
* This is a fast path, for use by irq controller code that uses radix tree
|
||||
* revmaps
|
||||
*/
|
||||
unsigned int irq_radix_revmap_lookup(struct irq_domain *host,
|
||||
unsigned int irq_radix_revmap_lookup(struct irq_domain *domain,
|
||||
irq_hw_number_t hwirq)
|
||||
{
|
||||
struct irq_data *irq_data;
|
||||
|
||||
if (WARN_ON_ONCE(host->revmap_type != IRQ_DOMAIN_MAP_TREE))
|
||||
return irq_find_mapping(host, hwirq);
|
||||
if (WARN_ON_ONCE(domain->revmap_type != IRQ_DOMAIN_MAP_TREE))
|
||||
return irq_find_mapping(domain, hwirq);
|
||||
|
||||
/*
|
||||
* Freeing an irq can delete nodes along the path to
|
||||
* do the lookup via call_rcu.
|
||||
*/
|
||||
rcu_read_lock();
|
||||
irq_data = radix_tree_lookup(&host->revmap_data.tree, hwirq);
|
||||
irq_data = radix_tree_lookup(&domain->revmap_data.tree, hwirq);
|
||||
rcu_read_unlock();
|
||||
|
||||
/*
|
||||
|
|
@ -473,62 +470,62 @@ unsigned int irq_radix_revmap_lookup(struct irq_domain *host,
|
|||
* Else fallback to linear lookup - this should not happen in practice
|
||||
* as it means that we failed to insert the node in the radix tree.
|
||||
*/
|
||||
return irq_data ? irq_data->irq : irq_find_mapping(host, hwirq);
|
||||
return irq_data ? irq_data->irq : irq_find_mapping(domain, hwirq);
|
||||
}
|
||||
|
||||
/**
|
||||
* irq_radix_revmap_insert() - Insert a hw irq to linux irq number mapping.
|
||||
* @host: host owning this hardware interrupt
|
||||
* @domain: domain owning this hardware interrupt
|
||||
* @virq: linux irq number
|
||||
* @hwirq: hardware irq number in that host space
|
||||
* @hwirq: hardware irq number in that domain space
|
||||
*
|
||||
* This is for use by irq controllers that use a radix tree reverse
|
||||
* mapping for fast lookup.
|
||||
*/
|
||||
void irq_radix_revmap_insert(struct irq_domain *host, unsigned int virq,
|
||||
void irq_radix_revmap_insert(struct irq_domain *domain, unsigned int virq,
|
||||
irq_hw_number_t hwirq)
|
||||
{
|
||||
struct irq_data *irq_data = irq_get_irq_data(virq);
|
||||
|
||||
if (WARN_ON(host->revmap_type != IRQ_DOMAIN_MAP_TREE))
|
||||
if (WARN_ON(domain->revmap_type != IRQ_DOMAIN_MAP_TREE))
|
||||
return;
|
||||
|
||||
if (virq) {
|
||||
mutex_lock(&revmap_trees_mutex);
|
||||
radix_tree_insert(&host->revmap_data.tree, hwirq, irq_data);
|
||||
radix_tree_insert(&domain->revmap_data.tree, hwirq, irq_data);
|
||||
mutex_unlock(&revmap_trees_mutex);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* irq_linear_revmap() - Find a linux irq from a hw irq number.
|
||||
* @host: host owning this hardware interrupt
|
||||
* @hwirq: hardware irq number in that host space
|
||||
* @domain: domain owning this hardware interrupt
|
||||
* @hwirq: hardware irq number in that domain space
|
||||
*
|
||||
* This is a fast path, for use by irq controller code that uses linear
|
||||
* revmaps. It does fallback to the slow path if the revmap doesn't exist
|
||||
* yet and will create the revmap entry with appropriate locking
|
||||
*/
|
||||
unsigned int irq_linear_revmap(struct irq_domain *host,
|
||||
unsigned int irq_linear_revmap(struct irq_domain *domain,
|
||||
irq_hw_number_t hwirq)
|
||||
{
|
||||
unsigned int *revmap;
|
||||
|
||||
if (WARN_ON_ONCE(host->revmap_type != IRQ_DOMAIN_MAP_LINEAR))
|
||||
return irq_find_mapping(host, hwirq);
|
||||
if (WARN_ON_ONCE(domain->revmap_type != IRQ_DOMAIN_MAP_LINEAR))
|
||||
return irq_find_mapping(domain, hwirq);
|
||||
|
||||
/* Check revmap bounds */
|
||||
if (unlikely(hwirq >= host->revmap_data.linear.size))
|
||||
return irq_find_mapping(host, hwirq);
|
||||
if (unlikely(hwirq >= domain->revmap_data.linear.size))
|
||||
return irq_find_mapping(domain, hwirq);
|
||||
|
||||
/* Check if revmap was allocated */
|
||||
revmap = host->revmap_data.linear.revmap;
|
||||
revmap = domain->revmap_data.linear.revmap;
|
||||
if (unlikely(revmap == NULL))
|
||||
return irq_find_mapping(host, hwirq);
|
||||
return irq_find_mapping(domain, hwirq);
|
||||
|
||||
/* Fill up revmap with slow path if no mapping found */
|
||||
if (unlikely(!revmap[hwirq]))
|
||||
revmap[hwirq] = irq_find_mapping(host, hwirq);
|
||||
revmap[hwirq] = irq_find_mapping(domain, hwirq);
|
||||
|
||||
return revmap[hwirq];
|
||||
}
|
||||
|
|
@ -544,7 +541,7 @@ static int virq_debug_show(struct seq_file *m, void *private)
|
|||
int i;
|
||||
|
||||
seq_printf(m, "%-5s %-7s %-15s %-18s %s\n", "virq", "hwirq",
|
||||
"chip name", "chip data", "host name");
|
||||
"chip name", "chip data", "domain name");
|
||||
|
||||
for (i = 1; i < nr_irqs; i++) {
|
||||
desc = irq_to_desc(i);
|
||||
|
|
|
|||
Loading…
Reference in a new issue