From: shuo.a.liu@intel.com
To: linux-kernel@vger.kernel.org, x86@kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"H . Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Yu Wang <yu1.wang@intel.com>,
Reinette Chatre <reinette.chatre@intel.com>,
Shuo Liu <shuo.a.liu@intel.com>, Zhi Wang <zhi.a.wang@intel.com>,
Zhenyu Wang <zhenyuw@linux.intel.com>
Subject: [PATCH v7 14/18] virt: acrn: Introduce I/O ranges operation interfaces
Date: Wed, 6 Jan 2021 15:50:51 +0800 [thread overview]
Message-ID: <20210106075055.47226-15-shuo.a.liu@intel.com> (raw)
In-Reply-To: <20210106075055.47226-1-shuo.a.liu@intel.com>
From: Shuo Liu <shuo.a.liu@intel.com>
An I/O request of a User VM, which is constructed by hypervisor, is
distributed by the ACRN Hypervisor Service Module to an I/O client
corresponding to the address range of the I/O request.
I/O client maintains a list of address ranges. Introduce
acrn_ioreq_range_{add,del}() to manage these address ranges.
Signed-off-by: Shuo Liu <shuo.a.liu@intel.com>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Cc: Zhi Wang <zhi.a.wang@intel.com>
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Cc: Yu Wang <yu1.wang@intel.com>
Cc: Reinette Chatre <reinette.chatre@intel.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/virt/acrn/acrn_drv.h | 4 +++
drivers/virt/acrn/ioreq.c | 60 ++++++++++++++++++++++++++++++++++++
2 files changed, 64 insertions(+)
diff --git a/drivers/virt/acrn/acrn_drv.h b/drivers/virt/acrn/acrn_drv.h
index 542448c88026..862d195d4774 100644
--- a/drivers/virt/acrn/acrn_drv.h
+++ b/drivers/virt/acrn/acrn_drv.h
@@ -197,6 +197,10 @@ struct acrn_ioreq_client *acrn_ioreq_client_create(struct acrn_vm *vm,
void *data, bool is_default,
const char *name);
void acrn_ioreq_client_destroy(struct acrn_ioreq_client *client);
+int acrn_ioreq_range_add(struct acrn_ioreq_client *client,
+ u32 type, u64 start, u64 end);
+void acrn_ioreq_range_del(struct acrn_ioreq_client *client,
+ u32 type, u64 start, u64 end);
int acrn_msi_inject(struct acrn_vm *vm, u64 msi_addr, u64 msi_data);
diff --git a/drivers/virt/acrn/ioreq.c b/drivers/virt/acrn/ioreq.c
index b469f273e20c..7d391c026437 100644
--- a/drivers/virt/acrn/ioreq.c
+++ b/drivers/virt/acrn/ioreq.c
@@ -101,6 +101,66 @@ 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.
--
2.28.0
next prev parent reply other threads:[~2021-01-06 7:53 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-06 7:50 [PATCH v7 00/18] HSM driver for ACRN hypervisor shuo.a.liu
2021-01-06 7:50 ` [PATCH v7 01/18] docs: acrn: Introduce ACRN shuo.a.liu
2021-01-18 22:30 ` Randy Dunlap
2021-01-19 1:36 ` Shuo A Liu
2021-01-06 7:50 ` [PATCH v7 02/18] x86/acrn: Introduce acrn_{setup, remove}_intr_handler() shuo.a.liu
2021-01-06 7:50 ` [PATCH v7 03/18] x86/acrn: Introduce acrn_cpuid_base() and hypervisor feature bits shuo.a.liu
2021-01-06 7:50 ` [PATCH v7 04/18] x86/acrn: Introduce hypercall interfaces shuo.a.liu
2021-01-06 7:50 ` [PATCH v7 05/18] virt: acrn: Introduce ACRN HSM basic driver shuo.a.liu
2021-01-06 7:50 ` [PATCH v7 06/18] virt: acrn: Introduce VM management interfaces shuo.a.liu
2021-01-08 15:31 ` Greg Kroah-Hartman
2021-01-11 3:55 ` Shuo A Liu
2021-01-06 7:50 ` [PATCH v7 07/18] virt: acrn: Introduce an ioctl to set vCPU registers state shuo.a.liu
2021-01-08 15:33 ` Greg Kroah-Hartman
2021-01-11 3:59 ` Shuo A Liu
2021-01-06 7:50 ` [PATCH v7 08/18] virt: acrn: Introduce EPT mapping management shuo.a.liu
2021-01-08 15:34 ` Greg Kroah-Hartman
2021-01-11 4:03 ` Shuo A Liu
2021-01-06 7:50 ` [PATCH v7 09/18] virt: acrn: Introduce I/O request management shuo.a.liu
2021-01-11 21:52 ` Davidlohr Bueso
2021-01-12 6:05 ` Shuo A Liu
2021-01-12 17:29 ` Davidlohr Bueso
2021-01-06 7:50 ` [PATCH v7 10/18] virt: acrn: Introduce PCI configuration space PIO accesses combiner shuo.a.liu
2021-01-06 7:50 ` [PATCH v7 11/18] virt: acrn: Introduce interfaces for PCI device passthrough shuo.a.liu
2021-01-06 7:50 ` [PATCH v7 12/18] virt: acrn: Introduce interrupt injection interfaces shuo.a.liu
2021-01-06 7:50 ` [PATCH v7 13/18] virt: acrn: Introduce interfaces to query C-states and P-states allowed by hypervisor shuo.a.liu
2021-01-06 7:50 ` shuo.a.liu [this message]
2021-01-06 7:50 ` [PATCH v7 15/18] virt: acrn: Introduce ioeventfd shuo.a.liu
2021-01-06 7:50 ` [PATCH v7 16/18] virt: acrn: Introduce irqfd shuo.a.liu
2021-01-06 7:50 ` [PATCH v7 17/18] virt: acrn: Introduce an interface for Service VM to control vCPU shuo.a.liu
2021-01-06 7:50 ` [PATCH v7 18/18] sample/acrn: Introduce a sample of HSM ioctl interface usage shuo.a.liu
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