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authorRajithaY <rajithax.yerrumsetty@intel.com>2017-04-25 03:31:15 -0700
committerRajitha Yerrumchetty <rajithax.yerrumsetty@intel.com>2017-05-22 06:48:08 +0000
commitbb756eebdac6fd24e8919e2c43f7d2c8c4091f59 (patch)
treeca11e03542edf2d8f631efeca5e1626d211107e3 /qemu/roms/ipxe/src/interface/xen/xenbus.c
parenta14b48d18a9ed03ec191cf16b162206998a895ce (diff)
Adding qemu as a submodule of KVMFORNFV
This Patch includes the changes to add qemu as a submodule to kvmfornfv repo and make use of the updated latest qemu for the execution of all testcase Change-Id: I1280af507a857675c7f81d30c95255635667bdd7 Signed-off-by:RajithaY<rajithax.yerrumsetty@intel.com>
Diffstat (limited to 'qemu/roms/ipxe/src/interface/xen/xenbus.c')
-rw-r--r--qemu/roms/ipxe/src/interface/xen/xenbus.c397
1 files changed, 0 insertions, 397 deletions
diff --git a/qemu/roms/ipxe/src/interface/xen/xenbus.c b/qemu/roms/ipxe/src/interface/xen/xenbus.c
deleted file mode 100644
index c328af443..000000000
--- a/qemu/roms/ipxe/src/interface/xen/xenbus.c
+++ /dev/null
@@ -1,397 +0,0 @@
-/*
- * Copyright (C) 2014 Michael Brown <mbrown@fensystems.co.uk>.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that 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., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
- * You can also choose to distribute this program under the terms of
- * the Unmodified Binary Distribution Licence (as given in the file
- * COPYING.UBDL), provided that you have satisfied its requirements.
- */
-
-FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
-
-#include <stdio.h>
-#include <errno.h>
-#include <ipxe/malloc.h>
-#include <ipxe/device.h>
-#include <ipxe/timer.h>
-#include <ipxe/nap.h>
-#include <ipxe/xen.h>
-#include <ipxe/xenstore.h>
-#include <ipxe/xenbus.h>
-
-/** @file
- *
- * Xen device bus
- *
- */
-
-/* Disambiguate the various error causes */
-#define ETIMEDOUT_UNKNOWN \
- __einfo_error ( EINFO_ETIMEDOUT_UNKNOWN )
-#define EINFO_ETIMEDOUT_UNKNOWN \
- __einfo_uniqify ( EINFO_ETIMEDOUT, XenbusStateUnknown, \
- "Unknown" )
-#define ETIMEDOUT_INITIALISING \
- __einfo_error ( EINFO_ETIMEDOUT_INITIALISING )
-#define EINFO_ETIMEDOUT_INITIALISING \
- __einfo_uniqify ( EINFO_ETIMEDOUT, XenbusStateInitialising, \
- "Initialising" )
-#define ETIMEDOUT_INITWAIT \
- __einfo_error ( EINFO_ETIMEDOUT_INITWAIT )
-#define EINFO_ETIMEDOUT_INITWAIT \
- __einfo_uniqify ( EINFO_ETIMEDOUT, XenbusStateInitWait, \
- "InitWait" )
-#define ETIMEDOUT_INITIALISED \
- __einfo_error ( EINFO_ETIMEDOUT_INITIALISED )
-#define EINFO_ETIMEDOUT_INITIALISED \
- __einfo_uniqify ( EINFO_ETIMEDOUT, XenbusStateInitialised, \
- "Initialised" )
-#define ETIMEDOUT_CONNECTED \
- __einfo_error ( EINFO_ETIMEDOUT_CONNECTED )
-#define EINFO_ETIMEDOUT_CONNECTED \
- __einfo_uniqify ( EINFO_ETIMEDOUT, XenbusStateConnected, \
- "Connected" )
-#define ETIMEDOUT_CLOSING \
- __einfo_error ( EINFO_ETIMEDOUT_CLOSING )
-#define EINFO_ETIMEDOUT_CLOSING \
- __einfo_uniqify ( EINFO_ETIMEDOUT, XenbusStateClosing, \
- "Closing" )
-#define ETIMEDOUT_CLOSED \
- __einfo_error ( EINFO_ETIMEDOUT_CLOSED )
-#define EINFO_ETIMEDOUT_CLOSED \
- __einfo_uniqify ( EINFO_ETIMEDOUT, XenbusStateClosed, \
- "Closed" )
-#define ETIMEDOUT_RECONFIGURING \
- __einfo_error ( EINFO_ETIMEDOUT_RECONFIGURING )
-#define EINFO_ETIMEDOUT_RECONFIGURING \
- __einfo_uniqify ( EINFO_ETIMEDOUT, XenbusStateReconfiguring, \
- "Reconfiguring" )
-#define ETIMEDOUT_RECONFIGURED \
- __einfo_error ( EINFO_ETIMEDOUT_RECONFIGURED )
-#define EINFO_ETIMEDOUT_RECONFIGURED \
- __einfo_uniqify ( EINFO_ETIMEDOUT, XenbusStateReconfigured, \
- "Reconfigured" )
-#define ETIMEDOUT_STATE( state ) \
- EUNIQ ( EINFO_ETIMEDOUT, (state), ETIMEDOUT_UNKNOWN, \
- ETIMEDOUT_INITIALISING, ETIMEDOUT_INITWAIT, \
- ETIMEDOUT_INITIALISED, ETIMEDOUT_CONNECTED, \
- ETIMEDOUT_CLOSING, ETIMEDOUT_CLOSED, \
- ETIMEDOUT_RECONFIGURING, ETIMEDOUT_RECONFIGURED )
-
-/** Maximum time to wait for backend to reach a given state, in ticks */
-#define XENBUS_BACKEND_TIMEOUT ( 5 * TICKS_PER_SEC )
-
-/**
- * Set device state
- *
- * @v xendev Xen device
- * @v state New state
- * @ret rc Return status code
- */
-int xenbus_set_state ( struct xen_device *xendev, int state ) {
- int rc;
-
- /* Attempt to set state */
- if ( ( rc = xenstore_write_num ( xendev->xen, state, xendev->key,
- "state", NULL ) ) != 0 ) {
- DBGC ( xendev, "XENBUS %s could not set state=\"%d\": %s\n",
- xendev->key, state, strerror ( rc ) );
- return rc;
- }
-
- return 0;
-}
-
-/**
- * Get backend state
- *
- * @v xendev Xen device
- * @ret state Backend state, or negative error
- */
-int xenbus_backend_state ( struct xen_device *xendev ) {
- unsigned long state;
- int rc;
-
- /* Attempt to get backend state */
- if ( ( rc = xenstore_read_num ( xendev->xen, &state, xendev->backend,
- "state", NULL ) ) != 0 ) {
- DBGC ( xendev, "XENBUS %s could not read %s/state: %s\n",
- xendev->key, xendev->backend, strerror ( rc ) );
- return rc;
- }
-
- return state;
-}
-
-/**
- * Wait for backend to reach a given state
- *
- * @v xendev Xen device
- * @v state Desired backend state
- * @ret rc Return status code
- */
-int xenbus_backend_wait ( struct xen_device *xendev, int state ) {
- unsigned long started = currticks();
- unsigned long elapsed;
- unsigned int attempts = 0;
- int current_state;
- int rc;
-
- /* Wait for backend to reach this state */
- do {
-
- /* Get current backend state */
- current_state = xenbus_backend_state ( xendev );
- if ( current_state < 0 ) {
- rc = current_state;
- return rc;
- }
- if ( current_state == state )
- return 0;
-
- /* Allow time for backend to react */
- cpu_nap();
-
- /* XenStore is a very slow interface; any fixed delay
- * time would be dwarfed by the XenStore access time.
- * We therefore use wall clock to time out this
- * operation.
- */
- elapsed = ( currticks() - started );
- attempts++;
-
- } while ( elapsed < XENBUS_BACKEND_TIMEOUT );
-
- /* Construct status code from current backend state */
- rc = -ETIMEDOUT_STATE ( current_state );
- DBGC ( xendev, "XENBUS %s timed out after %d attempts waiting for "
- "%s/state=\"%d\": %s\n", xendev->key, attempts, xendev->backend,
- state, strerror ( rc ) );
-
- return rc;
-}
-
-/**
- * Find driver for Xen device
- *
- * @v type Device type
- * @ret driver Driver, or NULL
- */
-static struct xen_driver * xenbus_find_driver ( const char *type ) {
- struct xen_driver *xendrv;
-
- for_each_table_entry ( xendrv, XEN_DRIVERS ) {
- if ( strcmp ( xendrv->type, type ) == 0 )
- return xendrv;
- }
- return NULL;
-}
-
-/**
- * Probe Xen device
- *
- * @v xen Xen hypervisor
- * @v parent Parent device
- * @v type Device type
- * @v instance Device instance
- * @ret rc Return status code
- */
-static int xenbus_probe_device ( struct xen_hypervisor *xen,
- struct device *parent, const char *type,
- const char *instance ) {
- struct xen_device *xendev;
- size_t key_len;
- int rc;
-
- /* Allocate and initialise structure */
- key_len = ( 7 /* "device/" */ + strlen ( type ) + 1 /* "/" */ +
- strlen ( instance ) + 1 /* NUL */ );
- xendev = zalloc ( sizeof ( *xendev ) + key_len );
- if ( ! xendev ) {
- rc = -ENOMEM;
- goto err_alloc;
- }
- snprintf ( xendev->dev.name, sizeof ( xendev->dev.name ), "%s/%s",
- type, instance );
- xendev->dev.desc.bus_type = BUS_TYPE_XEN;
- INIT_LIST_HEAD ( &xendev->dev.children );
- list_add_tail ( &xendev->dev.siblings, &parent->children );
- xendev->dev.parent = parent;
- xendev->xen = xen;
- xendev->key = ( ( void * ) ( xendev + 1 ) );
- snprintf ( xendev->key, key_len, "device/%s/%s", type, instance );
-
- /* Read backend key */
- if ( ( rc = xenstore_read ( xen, &xendev->backend, xendev->key,
- "backend", NULL ) ) != 0 ) {
- DBGC ( xendev, "XENBUS %s could not read backend: %s\n",
- xendev->key, strerror ( rc ) );
- goto err_read_backend;
- }
-
- /* Read backend domain ID */
- if ( ( rc = xenstore_read_num ( xen, &xendev->backend_id, xendev->key,
- "backend-id", NULL ) ) != 0 ) {
- DBGC ( xendev, "XENBUS %s could not read backend-id: %s\n",
- xendev->key, strerror ( rc ) );
- goto err_read_backend_id;
- }
- DBGC ( xendev, "XENBUS %s backend=\"%s\" in domain %ld\n",
- xendev->key, xendev->backend, xendev->backend_id );
-
- /* Look for a driver */
- xendev->driver = xenbus_find_driver ( type );
- if ( ! xendev->driver ) {
- DBGC ( xendev, "XENBUS %s has no driver\n", xendev->key );
- /* Not a fatal error */
- rc = 0;
- goto err_no_driver;
- }
- xendev->dev.driver_name = xendev->driver->name;
- DBGC ( xendev, "XENBUS %s has driver \"%s\"\n", xendev->key,
- xendev->driver->name );
-
- /* Probe driver */
- if ( ( rc = xendev->driver->probe ( xendev ) ) != 0 ) {
- DBGC ( xendev, "XENBUS could not probe %s: %s\n",
- xendev->key, strerror ( rc ) );
- goto err_probe;
- }
-
- return 0;
-
- xendev->driver->remove ( xendev );
- err_probe:
- err_no_driver:
- err_read_backend_id:
- free ( xendev->backend );
- err_read_backend:
- list_del ( &xendev->dev.siblings );
- free ( xendev );
- err_alloc:
- return rc;
-}
-
-/**
- * Remove Xen device
- *
- * @v xendev Xen device
- */
-static void xenbus_remove_device ( struct xen_device *xendev ) {
-
- /* Remove device */
- xendev->driver->remove ( xendev );
- free ( xendev->backend );
- list_del ( &xendev->dev.siblings );
- free ( xendev );
-}
-
-/**
- * Probe Xen devices of a given type
- *
- * @v xen Xen hypervisor
- * @v parent Parent device
- * @v type Device type
- * @ret rc Return status code
- */
-static int xenbus_probe_type ( struct xen_hypervisor *xen,
- struct device *parent, const char *type ) {
- char *children;
- char *child;
- size_t len;
- int rc;
-
- /* Get children of this key */
- if ( ( rc = xenstore_directory ( xen, &children, &len, "device",
- type, NULL ) ) != 0 ) {
- DBGC ( xen, "XENBUS could not list \"%s\" devices: %s\n",
- type, strerror ( rc ) );
- goto err_directory;
- }
-
- /* Probe each child */
- for ( child = children ; child < ( children + len ) ;
- child += ( strlen ( child ) + 1 /* NUL */ ) ) {
- if ( ( rc = xenbus_probe_device ( xen, parent, type,
- child ) ) != 0 )
- goto err_probe_device;
- }
-
- free ( children );
- return 0;
-
- err_probe_device:
- free ( children );
- err_directory:
- return rc;
-}
-
-/**
- * Probe Xen bus
- *
- * @v xen Xen hypervisor
- * @v parent Parent device
- * @ret rc Return status code
- */
-int xenbus_probe ( struct xen_hypervisor *xen, struct device *parent ) {
- char *types;
- char *type;
- size_t len;
- int rc;
-
- /* Get children of "device" key */
- if ( ( rc = xenstore_directory ( xen, &types, &len, "device",
- NULL ) ) != 0 ) {
- DBGC ( xen, "XENBUS could not list device types: %s\n",
- strerror ( rc ) );
- goto err_directory;
- }
-
- /* Probe each child type */
- for ( type = types ; type < ( types + len ) ;
- type += ( strlen ( type ) + 1 /* NUL */ ) ) {
- if ( ( rc = xenbus_probe_type ( xen, parent, type ) ) != 0 )
- goto err_probe_type;
- }
-
- free ( types );
- return 0;
-
- xenbus_remove ( xen, parent );
- err_probe_type:
- free ( types );
- err_directory:
- return rc;
-}
-
-/**
- * Remove Xen bus
- *
- * @v xen Xen hypervisor
- * @v parent Parent device
- */
-void xenbus_remove ( struct xen_hypervisor *xen __unused,
- struct device *parent ) {
- struct xen_device *xendev;
- struct xen_device *tmp;
-
- /* Remove devices */
- list_for_each_entry_safe ( xendev, tmp, &parent->children,
- dev.siblings ) {
- xenbus_remove_device ( xendev );
- }
-}