From 5371842b723dd04df57171f2c74660966901380c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kristian=20H=C3=B8gsberg?= <krh@redhat.com>
Date: Wed, 7 Mar 2007 12:12:42 -0500
Subject: [PATCH] firewire: Implement ioctl to initiate bus reset.
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Signed-off-by: Kristian Høgsberg <krh@redhat.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
---
drivers/firewire/fw-device-cdev.c | 15 +++++++++++++++
drivers/firewire/fw-device-cdev.h | 16 ++++++++++++----
2 files changed, 27 insertions(+), 4 deletions(-)
diff --git a/drivers/firewire/fw-device-cdev.c b/drivers/firewire/fw-device-cdev.c
index 9f3c96c7af29..79e095ea552d 100644
--- a/drivers/firewire/fw-device-cdev.c
+++ b/drivers/firewire/fw-device-cdev.c
@@ -433,6 +433,19 @@ static int ioctl_send_response(struct client *client, void __user *arg)
return 0;
}
+static int ioctl_initiate_bus_reset(struct client *client, void __user *arg)
+{
+ struct fw_cdev_initiate_bus_reset request;
+ int short_reset;
+
+ if (copy_from_user(&request, arg, sizeof request))
+ return -EFAULT;
+
+ short_reset = (request.type == FW_CDEV_SHORT_RESET);
+
+ return fw_core_initiate_bus_reset(client->device->card, short_reset);
+}
+
static void
iso_callback(struct fw_iso_context *context, u32 cycle,
size_t header_length, void *header, void *data)
@@ -606,6 +619,8 @@ dispatch_ioctl(struct client *client, unsigned int cmd, void __user *arg)
return ioctl_allocate(client, arg);
case FW_CDEV_IOC_SEND_RESPONSE:
return ioctl_send_response(client, arg);
+ case FW_CDEV_IOC_INITIATE_BUS_RESET:
+ return ioctl_initiate_bus_reset(client, arg);
case FW_CDEV_IOC_CREATE_ISO_CONTEXT:
return ioctl_create_iso_context(client, arg);
case FW_CDEV_IOC_QUEUE_ISO:
diff --git a/drivers/firewire/fw-device-cdev.h b/drivers/firewire/fw-device-cdev.h
index 4f94471b8078..8a8b390d5996 100644
--- a/drivers/firewire/fw-device-cdev.h
+++ b/drivers/firewire/fw-device-cdev.h
@@ -108,10 +108,11 @@ struct fw_cdev_event_iso_interrupt {
#define FW_CDEV_IOC_SEND_REQUEST _IO('#', 0x01)
#define FW_CDEV_IOC_ALLOCATE _IO('#', 0x02)
#define FW_CDEV_IOC_SEND_RESPONSE _IO('#', 0x03)
-#define FW_CDEV_IOC_CREATE_ISO_CONTEXT _IO('#', 0x04)
-#define FW_CDEV_IOC_QUEUE_ISO _IO('#', 0x05)
-#define FW_CDEV_IOC_START_ISO _IO('#', 0x06)
-#define FW_CDEV_IOC_STOP_ISO _IO('#', 0x07)
+#define FW_CDEV_IOC_INITIATE_BUS_RESET _IO('#', 0x04)
+#define FW_CDEV_IOC_CREATE_ISO_CONTEXT _IO('#', 0x05)
+#define FW_CDEV_IOC_QUEUE_ISO _IO('#', 0x06)
+#define FW_CDEV_IOC_START_ISO _IO('#', 0x07)
+#define FW_CDEV_IOC_STOP_ISO _IO('#', 0x08)
struct fw_cdev_get_config_rom {
__u32 length;
@@ -139,6 +140,13 @@ struct fw_cdev_allocate {
__u32 length;
};
+#define FW_CDEV_LONG_RESET 0
+#define FW_CDEV_SHORT_RESET 1
+
+struct fw_cdev_initiate_bus_reset {
+ __u32 type;
+};
+
#define FW_CDEV_ISO_CONTEXT_TRANSMIT 0
#define FW_CDEV_ISO_CONTEXT_RECEIVE 1
--
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