From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:43171) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1R37yt-0002G3-Jx for qemu-devel@nongnu.org; Mon, 12 Sep 2011 10:59:32 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1R37ys-0000Q2-Lj for qemu-devel@nongnu.org; Mon, 12 Sep 2011 10:59:31 -0400 Received: from mail-vw0-f45.google.com ([209.85.212.45]:53541) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1R37ys-0000Pw-G5 for qemu-devel@nongnu.org; Mon, 12 Sep 2011 10:59:30 -0400 Received: by vws17 with SMTP id 17so3907351vws.4 for ; Mon, 12 Sep 2011 07:59:29 -0700 (PDT) From: Devin Nakamura Date: Mon, 12 Sep 2011 10:59:34 -0400 Message-Id: <1315839574-14393-1-git-send-email-devin122@gmail.com> Subject: [Qemu-devel] [PATCH 5/6] qed: add bdrv_qed_map() List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: kwolf@redhat.com, Devin Nakamura Signed-off-by: Devin Nakamura --- block/qed.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 47 insertions(+), 0 deletions(-) diff --git a/block/qed.c b/block/qed.c index 4cde2fd..341cf9d 100644 --- a/block/qed.c +++ b/block/qed.c @@ -1540,6 +1540,52 @@ static int bdrv_qed_get_mapping(BlockDriverState *bs, uint64_t guest_offset, return 0; } +static int bdrv_qed_map(BlockDriverState *bs, uint64_t guest_offset, + uint64_t host_offset, uint64_t contiguous_bytes) +{ + BDRVQEDState* s = bs->opaque; + if(guest_offset != qed_start_of_cluster(s, guest_offset)){ + return -EINVAL; + } + + if(contiguous_bytes % s->header.cluster_size != 0){ + return -EINVAL; + } + + while(contiguous_bytes > 0){ + uint64_t l1_index, l2_index, first_l2; + int ret; + QEDRequest req = {.l2_table = NULL}; + + + l1_index = qed_l1_index(s, guest_offset); + l2_index = qed_l2_index(s, guest_offset); + first_l2 = l2_index; + if(!s->l1_table->offsets[l1_index]){ + CachedL2Table * table = qed_new_l2_table(s); + s->l1_table->offsets[l1_index] = table->offset; + qed_write_l1_table_sync(s, l1_index, 1); + qed_commit_l2_cache_entry(&s->l2_cache, table); + } + + ret = qed_read_l2_table_sync(s, &req, s->l1_table->offsets[l1_index]); + if(ret){ + return ret; + } + + for(;l2_index < s->table_nelems && contiguous_bytes > 0; l2_index++){ + req.l2_table->table->offsets[l2_index] = host_offset; + host_offset += s->header.cluster_size; + contiguous_bytes -= s->header.cluster_size; + } + + ret = qed_write_l2_table_sync(s, &req, 0, s->table_nelems, true); + qed_unref_l2_cache_entry(req.l2_table); + + } + return 0; +} + static QEMUOptionParameter qed_create_options[] = { { .name = BLOCK_OPT_SIZE, @@ -1589,6 +1635,7 @@ static BlockDriver bdrv_qed = { .bdrv_get_conversion_options = bdrv_qed_get_conversion_options, .bdrv_open_conversion_target = bdrv_qed_open_conversion_target, .bdrv_get_mapping = bdrv_qed_get_mapping, + .bdrv_map = bdrv_qed_map, }; static void bdrv_qed_init(void) -- 1.7.6.rc1