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[PATCH-for-5.2 v2 15/25] block/nvme: Simplify ADMIN queue access
From: |
Philippe Mathieu-Daudé |
Subject: |
[PATCH-for-5.2 v2 15/25] block/nvme: Simplify ADMIN queue access |
Date: |
Thu, 29 Oct 2020 10:32:56 +0100 |
We don't need to dereference from BDRVNVMeState each time.
Use a NVMeQueuePair pointer on the admin queue.
The nvme_init() becomes easier to review, matching the style
of nvme_add_io_queue().
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
block/nvme.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/block/nvme.c b/block/nvme.c
index 0902aa55428..eed12f4933c 100644
--- a/block/nvme.c
+++ b/block/nvme.c
@@ -700,6 +700,7 @@ static int nvme_init(BlockDriverState *bs, const char
*device, int namespace,
Error **errp)
{
BDRVNVMeState *s = bs->opaque;
+ NVMeQueuePair *q;
AioContext *aio_context = bdrv_get_aio_context(bs);
int ret;
uint64_t cap;
@@ -781,19 +782,18 @@ static int nvme_init(BlockDriverState *bs, const char
*device, int namespace,
/* Set up admin queue. */
s->queues = g_new(NVMeQueuePair *, 1);
- s->queues[INDEX_ADMIN] = nvme_create_queue_pair(s, aio_context, 0,
- NVME_QUEUE_SIZE,
- errp);
- if (!s->queues[INDEX_ADMIN]) {
+ q = nvme_create_queue_pair(s, aio_context, 0, NVME_QUEUE_SIZE, errp);
+ if (!q) {
ret = -EINVAL;
goto out;
}
+ s->queues[INDEX_ADMIN] = q;
s->queue_count = 1;
QEMU_BUILD_BUG_ON((NVME_QUEUE_SIZE - 1) & 0xF000);
regs->aqa = cpu_to_le32(((NVME_QUEUE_SIZE - 1) << AQA_ACQS_SHIFT) |
((NVME_QUEUE_SIZE - 1) << AQA_ASQS_SHIFT));
- regs->asq = cpu_to_le64(s->queues[INDEX_ADMIN]->sq.iova);
- regs->acq = cpu_to_le64(s->queues[INDEX_ADMIN]->cq.iova);
+ regs->asq = cpu_to_le64(q->sq.iova);
+ regs->acq = cpu_to_le64(q->cq.iova);
/* After setting up all control registers we can enable device now. */
regs->cc = cpu_to_le32((ctz32(NVME_CQ_ENTRY_BYTES) << CC_IOCQES_SHIFT) |
--
2.26.2
- [PATCH-for-5.2 v2 07/25] block/nvme: Trace queue pair creation/deletion, (continued)
- [PATCH-for-5.2 v2 07/25] block/nvme: Trace queue pair creation/deletion, Philippe Mathieu-Daudé, 2020/10/29
- [PATCH-for-5.2 v2 09/25] block/nvme: Use unsigned integer for queue counter/size, Philippe Mathieu-Daudé, 2020/10/29
- [PATCH-for-5.2 v2 10/25] block/nvme: Make nvme_identify() return boolean indicating error, Philippe Mathieu-Daudé, 2020/10/29
- [PATCH-for-5.2 v2 11/25] block/nvme: Make nvme_init_queue() return boolean indicating error, Philippe Mathieu-Daudé, 2020/10/29
- [PATCH-for-5.2 v2 12/25] block/nvme: Introduce Completion Queue definitions, Philippe Mathieu-Daudé, 2020/10/29
- [PATCH-for-5.2 v2 13/25] block/nvme: Use definitions instead of magic values in add_io_queue(), Philippe Mathieu-Daudé, 2020/10/29
- [PATCH-for-5.2 v2 14/25] block/nvme: Correctly initialize Admin Queue Attributes, Philippe Mathieu-Daudé, 2020/10/29
- [PATCH-for-5.2 v2 15/25] block/nvme: Simplify ADMIN queue access,
Philippe Mathieu-Daudé <=
- [PATCH-for-5.2 v2 16/25] block/nvme: Simplify nvme_cmd_sync(), Philippe Mathieu-Daudé, 2020/10/29
- [PATCH-for-5.2 v2 17/25] block/nvme: Set request_alignment at initialization, Philippe Mathieu-Daudé, 2020/10/29
- [PATCH-for-5.2 v2 19/25] block/nvme: Change size and alignment of IDENTIFY response buffer, Philippe Mathieu-Daudé, 2020/10/29
- [PATCH-for-5.2 v2 18/25] block/nvme: Correct minimum device page size, Philippe Mathieu-Daudé, 2020/10/29
- [PATCH-for-5.2 v2 20/25] block/nvme: Change size and alignment of queue, Philippe Mathieu-Daudé, 2020/10/29
- [PATCH-for-5.2 v2 21/25] block/nvme: Change size and alignment of prp_list_pages, Philippe Mathieu-Daudé, 2020/10/29
- [PATCH-for-5.2 v2 22/25] block/nvme: Align iov's va and size on host page size, Philippe Mathieu-Daudé, 2020/10/29
- [PATCH-for-5.2 v2 23/25] block/nvme: Fix use of write-only doorbells page on Aarch64 arch, Philippe Mathieu-Daudé, 2020/10/29
- [PATCH-for-5.2 v2 24/25] block/nvme: Fix nvme_submit_command() on big-endian host, Philippe Mathieu-Daudé, 2020/10/29