diff options
Diffstat (limited to 'linux-2.6-xen-sparse/drivers/xen/blkback/common.h')
| -rw-r--r-- | linux-2.6-xen-sparse/drivers/xen/blkback/common.h | 139 |
1 files changed, 0 insertions, 139 deletions
diff --git a/linux-2.6-xen-sparse/drivers/xen/blkback/common.h b/linux-2.6-xen-sparse/drivers/xen/blkback/common.h deleted file mode 100644 index 948edf39b9..0000000000 --- a/linux-2.6-xen-sparse/drivers/xen/blkback/common.h +++ /dev/null @@ -1,139 +0,0 @@ -/* - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation; or, when distributed - * separately from the Linux kernel or incorporated into other - * software packages, subject to the following license: - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this source file (the "Software"), to deal in the Software without - * restriction, including without limitation the rights to use, copy, modify, - * merge, publish, distribute, sublicense, and/or sell copies of the Software, - * and to permit persons to whom the Software is furnished to do so, subject to - * the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING - * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS - * IN THE SOFTWARE. - */ - -#ifndef __BLKIF__BACKEND__COMMON_H__ -#define __BLKIF__BACKEND__COMMON_H__ - -#include <linux/version.h> -#include <linux/module.h> -#include <linux/interrupt.h> -#include <linux/slab.h> -#include <linux/blkdev.h> -#include <linux/vmalloc.h> -#include <linux/wait.h> -#include <asm/io.h> -#include <asm/setup.h> -#include <asm/pgalloc.h> -#include <xen/evtchn.h> -#include <asm/hypervisor.h> -#include <xen/blkif.h> -#include <xen/gnttab.h> -#include <xen/driver_util.h> -#include <xen/xenbus.h> - -#define DPRINTK(_f, _a...) \ - pr_debug("(file=%s, line=%d) " _f, \ - __FILE__ , __LINE__ , ## _a ) - -struct vbd { - blkif_vdev_t handle; /* what the domain refers to this vbd as */ - unsigned char readonly; /* Non-zero -> read-only */ - unsigned char type; /* VDISK_xxx */ - u32 pdevice; /* phys device that this vbd maps to */ - struct block_device *bdev; -}; - -struct backend_info; - -typedef struct blkif_st { - /* Unique identifier for this interface. */ - domid_t domid; - unsigned int handle; - /* Physical parameters of the comms window. */ - unsigned int irq; - /* Comms information. */ - enum blkif_protocol blk_protocol; - blkif_back_rings_t blk_rings; - struct vm_struct *blk_ring_area; - /* The VBD attached to this interface. */ - struct vbd vbd; - /* Back pointer to the backend_info. */ - struct backend_info *be; - /* Private fields. */ - spinlock_t blk_ring_lock; - atomic_t refcnt; - - wait_queue_head_t wq; - struct task_struct *xenblkd; - unsigned int waiting_reqs; - request_queue_t *plug; - - /* statistics */ - unsigned long st_print; - int st_rd_req; - int st_wr_req; - int st_oo_req; - int st_br_req; - int st_rd_sect; - int st_wr_sect; - - wait_queue_head_t waiting_to_free; - - grant_handle_t shmem_handle; - grant_ref_t shmem_ref; -} blkif_t; - -blkif_t *blkif_alloc(domid_t domid); -void blkif_disconnect(blkif_t *blkif); -void blkif_free(blkif_t *blkif); -int blkif_map(blkif_t *blkif, unsigned long shared_page, unsigned int evtchn); - -#define blkif_get(_b) (atomic_inc(&(_b)->refcnt)) -#define blkif_put(_b) \ - do { \ - if (atomic_dec_and_test(&(_b)->refcnt)) \ - wake_up(&(_b)->waiting_to_free);\ - } while (0) - -/* Create a vbd. */ -int vbd_create(blkif_t *blkif, blkif_vdev_t vdevice, unsigned major, - unsigned minor, int readonly); -void vbd_free(struct vbd *vbd); - -unsigned long long vbd_size(struct vbd *vbd); -unsigned int vbd_info(struct vbd *vbd); -unsigned long vbd_secsize(struct vbd *vbd); - -struct phys_req { - unsigned short dev; - unsigned short nr_sects; - struct block_device *bdev; - blkif_sector_t sector_number; -}; - -int vbd_translate(struct phys_req *req, blkif_t *blkif, int operation); - -void blkif_interface_init(void); - -void blkif_xenbus_init(void); - -irqreturn_t blkif_be_int(int irq, void *dev_id, struct pt_regs *regs); -int blkif_schedule(void *arg); - -int blkback_barrier(struct xenbus_transaction xbt, - struct backend_info *be, int state); - -#endif /* __BLKIF__BACKEND__COMMON_H__ */ |