summaryrefslogtreecommitdiff
path: root/drivers/virt/acrn/ioreq.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/virt/acrn/ioreq.c')
-rw-r--r--drivers/virt/acrn/ioreq.c60
1 files changed, 60 insertions, 0 deletions
diff --git a/drivers/virt/acrn/ioreq.c b/drivers/virt/acrn/ioreq.c
index d19c05582d38..80b2e3f0e276 100644
--- a/drivers/virt/acrn/ioreq.c
+++ b/drivers/virt/acrn/ioreq.c
@@ -103,6 +103,66 @@ int acrn_ioreq_request_default_complete(struct acrn_vm *vm, u16 vcpu)
return ret;
}
+/**
+ * acrn_ioreq_range_add() - Add an iorange monitored by an ioreq client
+ * @client: The ioreq client
+ * @type: Type (ACRN_IOREQ_TYPE_MMIO or ACRN_IOREQ_TYPE_PORTIO)
+ * @start: Start address of iorange
+ * @end: End address of iorange
+ *
+ * Return: 0 on success, <0 on error
+ */
+int acrn_ioreq_range_add(struct acrn_ioreq_client *client,
+ u32 type, u64 start, u64 end)
+{
+ struct acrn_ioreq_range *range;
+
+ if (end < start) {
+ dev_err(acrn_dev.this_device,
+ "Invalid IO range [0x%llx,0x%llx]\n", start, end);
+ return -EINVAL;
+ }
+
+ range = kzalloc(sizeof(*range), GFP_KERNEL);
+ if (!range)
+ return -ENOMEM;
+
+ range->type = type;
+ range->start = start;
+ range->end = end;
+
+ write_lock_bh(&client->range_lock);
+ list_add(&range->list, &client->range_list);
+ write_unlock_bh(&client->range_lock);
+
+ return 0;
+}
+
+/**
+ * acrn_ioreq_range_del() - Del an iorange monitored by an ioreq client
+ * @client: The ioreq client
+ * @type: Type (ACRN_IOREQ_TYPE_MMIO or ACRN_IOREQ_TYPE_PORTIO)
+ * @start: Start address of iorange
+ * @end: End address of iorange
+ */
+void acrn_ioreq_range_del(struct acrn_ioreq_client *client,
+ u32 type, u64 start, u64 end)
+{
+ struct acrn_ioreq_range *range;
+
+ write_lock_bh(&client->range_lock);
+ list_for_each_entry(range, &client->range_list, list) {
+ if (type == range->type &&
+ start == range->start &&
+ end == range->end) {
+ list_del(&range->list);
+ kfree(range);
+ break;
+ }
+ }
+ write_unlock_bh(&client->range_lock);
+}
+
/*
* ioreq_task() is the execution entity of handler thread of an I/O client.
* The handler callback of the I/O client is called within the handler thread.