The GICv3 ITS only uses the msi_controller structure as a way
to match the PHB with its MSI HW, and thus the msi_domain.
But now that we can directly associate an msi_domain with a device,
there is no use keeping this msi_controller around.
Just remove all traces of msi_controller from the driver.
Signed-off-by: Marc Zyngier <marc.zyng...@arm.com>
---
drivers/irqchip/irq-gic-v3-its.c | 33 ++++++++++++++-------------------
1 file changed, 14 insertions(+), 19 deletions(-)
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index 86e4684..2a2fb2e 100644
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@@ -54,13 +54,12 @@ struct its_collection {
/*
* The ITS structure - contains most of the infrastructure, with the
- * msi_controller, the command queue, the collections, and the list of
- * devices writing to it.
+ * top-level MSI domain, the command queue, the collections, and the
+ * list of devices writing to it.
*/
struct its_node {
raw_spinlock_t lock;
struct list_head entry;
- struct msi_controller msi_chip;
struct irq_domain *domain;
void __iomem *base;
unsigned long phys_base;
@@ -875,7 +874,7 @@ retry_baser:
if (val != tmp) {
pr_err("ITS: %s: GITS_BASER%d doesn't stick: %lx %lx\n",
- its->msi_chip.of_node->full_name, i,
+ its->domain->of_node->full_name, i,
(unsigned long) val, (unsigned long) tmp);
err = -ENXIO;
goto out_free;
@@ -1260,6 +1259,7 @@ static int its_probe(struct device_node *node, struct
irq_domain *parent)
struct resource res;
struct its_node *its;
void __iomem *its_base;
+ struct irq_domain *inner_domain = NULL;
u32 val;
u64 baser, tmp;
int err;
@@ -1296,7 +1296,6 @@ static int its_probe(struct device_node *node, struct
irq_domain *parent)
INIT_LIST_HEAD(&its->its_device_list);
its->base = its_base;
its->phys_base = res.start;
- its->msi_chip.of_node = node;
its->ite_size = ((readl_relaxed(its_base + GITS_TYPER) >> 4) & 0xf) + 1;
its->cmd_base = kzalloc(ITS_CMD_QUEUE_SZ, GFP_KERNEL);
@@ -1330,26 +1329,22 @@ static int its_probe(struct device_node *node, struct
irq_domain *parent)
its->flags |= ITS_FLAGS_CMDQ_NEEDS_FLUSHING;
}
- if (of_property_read_bool(its->msi_chip.of_node, "msi-controller")) {
- its->domain = irq_domain_add_tree(NULL, &its_domain_ops, its);
- if (!its->domain) {
+ if (of_property_read_bool(node, "msi-controller")) {
+ inner_domain = irq_domain_add_tree(NULL, &its_domain_ops, its);
+ if (!inner_domain) {
err = -ENOMEM;
goto out_free_tables;
}
- its->domain->parent = parent;
+ inner_domain->parent = parent;
- its->msi_chip.domain = pci_msi_create_irq_domain(node,
-
&its_pci_msi_domain_info,
- its->domain);
- if (!its->msi_chip.domain) {
+ its->domain = pci_msi_create_irq_domain(node,
+
&its_pci_msi_domain_info,
+ inner_domain);
+ if (!its->domain) {
err = -ENOMEM;
goto out_free_domains;
}
-
- err = of_pci_msi_chip_add(&its->msi_chip);
- if (err)
- goto out_free_domains;
}
spin_lock(&its_lock);
@@ -1359,10 +1354,10 @@ static int its_probe(struct device_node *node, struct
irq_domain *parent)
return 0;
out_free_domains:
- if (its->msi_chip.domain)
- irq_domain_remove(its->msi_chip.domain);
if (its->domain)
irq_domain_remove(its->domain);
+ if (inner_domain)
+ irq_domain_remove(inner_domain);
out_free_tables:
its_free_tables(its);
out_free_cmd:
--
2.1.4
--
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