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Message-Id: <1314469905-7058-24-git-send-email-kys@microsoft.com>
Date: Sat, 27 Aug 2011 11:31:23 -0700
From: "K. Y. Srinivasan" <kys@...rosoft.com>
To: gregkh@...e.de, linux-kernel@...r.kernel.org,
devel@...uxdriverproject.org, virtualization@...ts.osdl.org
Cc: "K. Y. Srinivasan" <kys@...rosoft.com>,
Haiyang Zhang <haiyangz@...rosoft.com>
Subject: [PATCH 24/46] Staging: hv: storvsc: Cleanup storvsc_drv.c after adding the contents of storvsc.c
Cleanup storvsc_drv.c after adding the contents of storvsc.c.
Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@...rosoft.com>
---
drivers/staging/hv/storvsc_drv.c | 147 +++++++-------------------------------
1 files changed, 27 insertions(+), 120 deletions(-)
diff --git a/drivers/staging/hv/storvsc_drv.c b/drivers/staging/hv/storvsc_drv.c
index ddb31cf..096f615 100644
--- a/drivers/staging/hv/storvsc_drv.c
+++ b/drivers/staging/hv/storvsc_drv.c
@@ -19,11 +19,17 @@
* Hank Janssen <hjanssen@...rosoft.com>
* K. Y. Srinivasan <kys@...rosoft.com>
*/
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/completion.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/delay.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/device.h>
-#include <linux/blkdev.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_host.h>
@@ -37,39 +43,28 @@
#include "hyperv_storage.h"
-/*
- * Copyright (c) 2009, Microsoft Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
- * Place - Suite 330, Boston, MA 02111-1307 USA.
- *
- * Authors:
- * Haiyang Zhang <haiyangz@...rosoft.com>
- * Hank Janssen <hjanssen@...rosoft.com>
- * K. Y. Srinivasan <kys@...rosoft.com>
- *
- */
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/completion.h>
-#include <linux/string.h>
-#include <linux/slab.h>
-#include <linux/mm.h>
-#include <linux/delay.h>
+static int storvsc_ringbuffer_size = STORVSC_RING_BUFFER_SIZE;
-#include "hyperv.h"
-#include "hyperv_storage.h"
+module_param(storvsc_ringbuffer_size, int, S_IRUGO);
+MODULE_PARM_DESC(storvsc_ringbuffer_size, "Ring buffer size (bytes)");
+
+struct hv_host_device {
+ struct hv_device *dev;
+ struct kmem_cache *request_pool;
+ unsigned int port;
+ unsigned char path;
+ unsigned char target;
+};
+
+struct storvsc_cmd_request {
+ struct list_head entry;
+ struct scsi_cmnd *cmd;
+ unsigned int bounce_sgl_count;
+ struct scatterlist *bounce_sgl;
+
+ struct hv_storvsc_request request;
+};
static inline struct storvsc_device *alloc_stor_device(struct hv_device *device)
{
@@ -500,94 +495,6 @@ int storvsc_do_io(struct hv_device *device,
return ret;
}
-/*
- * The channel properties uniquely specify how the device is to be
- * presented to the guest. Map this information for use by the block
- * driver. For Linux guests on Hyper-V, we emulate a scsi HBA in the guest
- * (storvsc_drv) and so scsi devices in the guest are handled by
- * native upper level Linux drivers. Consequently, Hyper-V
- * block driver, while being a generic block driver, presently does not
- * deal with anything other than devices that would need to be presented
- * to the guest as an IDE disk.
- *
- * This function maps the channel properties as embedded in the input
- * parameter device_info onto information necessary to register the
- * corresponding block device.
- *
- * Currently, there is no way to stop the emulation of the block device
- * on the host side. And so, to prevent the native IDE drivers in Linux
- * from taking over these devices (to be managedby Hyper-V block
- * driver), we will take over if need be the major of the IDE controllers.
- *
- */
-
-int storvsc_get_major_info(struct storvsc_device_info *device_info,
- struct storvsc_major_info *major_info)
-{
- static bool ide0_registered;
- static bool ide1_registered;
-
- /*
- * For now we only support IDE disks.
- */
- major_info->devname = "ide";
- major_info->diskname = "hd";
-
- if (device_info->path_id) {
- major_info->major = 22;
- if (!ide1_registered) {
- major_info->do_register = true;
- ide1_registered = true;
- } else
- major_info->do_register = false;
-
- if (device_info->target_id)
- major_info->index = 3;
- else
- major_info->index = 2;
-
- return 0;
- } else {
- major_info->major = 3;
- if (!ide0_registered) {
- major_info->do_register = true;
- ide0_registered = true;
- } else
- major_info->do_register = false;
-
- if (device_info->target_id)
- major_info->index = 1;
- else
- major_info->index = 0;
-
- return 0;
- }
-
- return -ENODEV;
-}
-static int storvsc_ringbuffer_size = STORVSC_RING_BUFFER_SIZE;
-
-module_param(storvsc_ringbuffer_size, int, S_IRUGO);
-MODULE_PARM_DESC(storvsc_ringbuffer_size, "Ring buffer size (bytes)");
-
-struct hv_host_device {
- struct hv_device *dev;
- struct kmem_cache *request_pool;
- unsigned int port;
- unsigned char path;
- unsigned char target;
-};
-
-struct storvsc_cmd_request {
- struct list_head entry;
- struct scsi_cmnd *cmd;
-
- unsigned int bounce_sgl_count;
- struct scatterlist *bounce_sgl;
-
- struct hv_storvsc_request request;
-};
-
static void storvsc_get_ide_info(struct hv_device *dev, int *target, int *path)
{
*target =
--
1.7.4.1
--
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