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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/block/qed-table.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/block/qed-table.c')
-rw-r--r--qemu/block/qed-table.c297
1 files changed, 0 insertions, 297 deletions
diff --git a/qemu/block/qed-table.c b/qemu/block/qed-table.c
deleted file mode 100644
index 802945f5e..000000000
--- a/qemu/block/qed-table.c
+++ /dev/null
@@ -1,297 +0,0 @@
-/*
- * QEMU Enhanced Disk Format Table I/O
- *
- * Copyright IBM, Corp. 2010
- *
- * Authors:
- * Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
- * Anthony Liguori <aliguori@us.ibm.com>
- *
- * This work is licensed under the terms of the GNU LGPL, version 2 or later.
- * See the COPYING.LIB file in the top-level directory.
- *
- */
-
-#include "qemu/osdep.h"
-#include "trace.h"
-#include "qemu/sockets.h" /* for EINPROGRESS on Windows */
-#include "qed.h"
-
-typedef struct {
- GenericCB gencb;
- BDRVQEDState *s;
- QEDTable *table;
-
- struct iovec iov;
- QEMUIOVector qiov;
-} QEDReadTableCB;
-
-static void qed_read_table_cb(void *opaque, int ret)
-{
- QEDReadTableCB *read_table_cb = opaque;
- QEDTable *table = read_table_cb->table;
- int noffsets = read_table_cb->qiov.size / sizeof(uint64_t);
- int i;
-
- /* Handle I/O error */
- if (ret) {
- goto out;
- }
-
- /* Byteswap offsets */
- for (i = 0; i < noffsets; i++) {
- table->offsets[i] = le64_to_cpu(table->offsets[i]);
- }
-
-out:
- /* Completion */
- trace_qed_read_table_cb(read_table_cb->s, read_table_cb->table, ret);
- gencb_complete(&read_table_cb->gencb, ret);
-}
-
-static void qed_read_table(BDRVQEDState *s, uint64_t offset, QEDTable *table,
- BlockCompletionFunc *cb, void *opaque)
-{
- QEDReadTableCB *read_table_cb = gencb_alloc(sizeof(*read_table_cb),
- cb, opaque);
- QEMUIOVector *qiov = &read_table_cb->qiov;
-
- trace_qed_read_table(s, offset, table);
-
- read_table_cb->s = s;
- read_table_cb->table = table;
- read_table_cb->iov.iov_base = table->offsets,
- read_table_cb->iov.iov_len = s->header.cluster_size * s->header.table_size,
-
- qemu_iovec_init_external(qiov, &read_table_cb->iov, 1);
- bdrv_aio_readv(s->bs->file->bs, offset / BDRV_SECTOR_SIZE, qiov,
- qiov->size / BDRV_SECTOR_SIZE,
- qed_read_table_cb, read_table_cb);
-}
-
-typedef struct {
- GenericCB gencb;
- BDRVQEDState *s;
- QEDTable *orig_table;
- QEDTable *table;
- bool flush; /* flush after write? */
-
- struct iovec iov;
- QEMUIOVector qiov;
-} QEDWriteTableCB;
-
-static void qed_write_table_cb(void *opaque, int ret)
-{
- QEDWriteTableCB *write_table_cb = opaque;
-
- trace_qed_write_table_cb(write_table_cb->s,
- write_table_cb->orig_table,
- write_table_cb->flush,
- ret);
-
- if (ret) {
- goto out;
- }
-
- if (write_table_cb->flush) {
- /* We still need to flush first */
- write_table_cb->flush = false;
- bdrv_aio_flush(write_table_cb->s->bs, qed_write_table_cb,
- write_table_cb);
- return;
- }
-
-out:
- qemu_vfree(write_table_cb->table);
- gencb_complete(&write_table_cb->gencb, ret);
-}
-
-/**
- * Write out an updated part or all of a table
- *
- * @s: QED state
- * @offset: Offset of table in image file, in bytes
- * @table: Table
- * @index: Index of first element
- * @n: Number of elements
- * @flush: Whether or not to sync to disk
- * @cb: Completion function
- * @opaque: Argument for completion function
- */
-static void qed_write_table(BDRVQEDState *s, uint64_t offset, QEDTable *table,
- unsigned int index, unsigned int n, bool flush,
- BlockCompletionFunc *cb, void *opaque)
-{
- QEDWriteTableCB *write_table_cb;
- unsigned int sector_mask = BDRV_SECTOR_SIZE / sizeof(uint64_t) - 1;
- unsigned int start, end, i;
- size_t len_bytes;
-
- trace_qed_write_table(s, offset, table, index, n);
-
- /* Calculate indices of the first and one after last elements */
- start = index & ~sector_mask;
- end = (index + n + sector_mask) & ~sector_mask;
-
- len_bytes = (end - start) * sizeof(uint64_t);
-
- write_table_cb = gencb_alloc(sizeof(*write_table_cb), cb, opaque);
- write_table_cb->s = s;
- write_table_cb->orig_table = table;
- write_table_cb->flush = flush;
- write_table_cb->table = qemu_blockalign(s->bs, len_bytes);
- write_table_cb->iov.iov_base = write_table_cb->table->offsets;
- write_table_cb->iov.iov_len = len_bytes;
- qemu_iovec_init_external(&write_table_cb->qiov, &write_table_cb->iov, 1);
-
- /* Byteswap table */
- for (i = start; i < end; i++) {
- uint64_t le_offset = cpu_to_le64(table->offsets[i]);
- write_table_cb->table->offsets[i - start] = le_offset;
- }
-
- /* Adjust for offset into table */
- offset += start * sizeof(uint64_t);
-
- bdrv_aio_writev(s->bs->file->bs, offset / BDRV_SECTOR_SIZE,
- &write_table_cb->qiov,
- write_table_cb->qiov.size / BDRV_SECTOR_SIZE,
- qed_write_table_cb, write_table_cb);
-}
-
-/**
- * Propagate return value from async callback
- */
-static void qed_sync_cb(void *opaque, int ret)
-{
- *(int *)opaque = ret;
-}
-
-int qed_read_l1_table_sync(BDRVQEDState *s)
-{
- int ret = -EINPROGRESS;
-
- qed_read_table(s, s->header.l1_table_offset,
- s->l1_table, qed_sync_cb, &ret);
- while (ret == -EINPROGRESS) {
- aio_poll(bdrv_get_aio_context(s->bs), true);
- }
-
- return ret;
-}
-
-void qed_write_l1_table(BDRVQEDState *s, unsigned int index, unsigned int n,
- BlockCompletionFunc *cb, void *opaque)
-{
- BLKDBG_EVENT(s->bs->file, BLKDBG_L1_UPDATE);
- qed_write_table(s, s->header.l1_table_offset,
- s->l1_table, index, n, false, cb, opaque);
-}
-
-int qed_write_l1_table_sync(BDRVQEDState *s, unsigned int index,
- unsigned int n)
-{
- int ret = -EINPROGRESS;
-
- qed_write_l1_table(s, index, n, qed_sync_cb, &ret);
- while (ret == -EINPROGRESS) {
- aio_poll(bdrv_get_aio_context(s->bs), true);
- }
-
- return ret;
-}
-
-typedef struct {
- GenericCB gencb;
- BDRVQEDState *s;
- uint64_t l2_offset;
- QEDRequest *request;
-} QEDReadL2TableCB;
-
-static void qed_read_l2_table_cb(void *opaque, int ret)
-{
- QEDReadL2TableCB *read_l2_table_cb = opaque;
- QEDRequest *request = read_l2_table_cb->request;
- BDRVQEDState *s = read_l2_table_cb->s;
- CachedL2Table *l2_table = request->l2_table;
- uint64_t l2_offset = read_l2_table_cb->l2_offset;
-
- if (ret) {
- /* can't trust loaded L2 table anymore */
- qed_unref_l2_cache_entry(l2_table);
- request->l2_table = NULL;
- } else {
- l2_table->offset = l2_offset;
-
- qed_commit_l2_cache_entry(&s->l2_cache, l2_table);
-
- /* This is guaranteed to succeed because we just committed the entry
- * to the cache.
- */
- request->l2_table = qed_find_l2_cache_entry(&s->l2_cache, l2_offset);
- assert(request->l2_table != NULL);
- }
-
- gencb_complete(&read_l2_table_cb->gencb, ret);
-}
-
-void qed_read_l2_table(BDRVQEDState *s, QEDRequest *request, uint64_t offset,
- BlockCompletionFunc *cb, void *opaque)
-{
- QEDReadL2TableCB *read_l2_table_cb;
-
- qed_unref_l2_cache_entry(request->l2_table);
-
- /* Check for cached L2 entry */
- request->l2_table = qed_find_l2_cache_entry(&s->l2_cache, offset);
- if (request->l2_table) {
- cb(opaque, 0);
- return;
- }
-
- request->l2_table = qed_alloc_l2_cache_entry(&s->l2_cache);
- request->l2_table->table = qed_alloc_table(s);
-
- read_l2_table_cb = gencb_alloc(sizeof(*read_l2_table_cb), cb, opaque);
- read_l2_table_cb->s = s;
- read_l2_table_cb->l2_offset = offset;
- read_l2_table_cb->request = request;
-
- BLKDBG_EVENT(s->bs->file, BLKDBG_L2_LOAD);
- qed_read_table(s, offset, request->l2_table->table,
- qed_read_l2_table_cb, read_l2_table_cb);
-}
-
-int qed_read_l2_table_sync(BDRVQEDState *s, QEDRequest *request, uint64_t offset)
-{
- int ret = -EINPROGRESS;
-
- qed_read_l2_table(s, request, offset, qed_sync_cb, &ret);
- while (ret == -EINPROGRESS) {
- aio_poll(bdrv_get_aio_context(s->bs), true);
- }
-
- return ret;
-}
-
-void qed_write_l2_table(BDRVQEDState *s, QEDRequest *request,
- unsigned int index, unsigned int n, bool flush,
- BlockCompletionFunc *cb, void *opaque)
-{
- BLKDBG_EVENT(s->bs->file, BLKDBG_L2_UPDATE);
- qed_write_table(s, request->l2_table->offset,
- request->l2_table->table, index, n, flush, cb, opaque);
-}
-
-int qed_write_l2_table_sync(BDRVQEDState *s, QEDRequest *request,
- unsigned int index, unsigned int n, bool flush)
-{
- int ret = -EINPROGRESS;
-
- qed_write_l2_table(s, request, index, n, flush, qed_sync_cb, &ret);
- while (ret == -EINPROGRESS) {
- aio_poll(bdrv_get_aio_context(s->bs), true);
- }
-
- return ret;
-}