Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1326479
| From | Johannes Thumshirn <jthumshirn@suse.de> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH 2/6] ibmvscsi: Add and use enums for valid CRQ header values |
| Date | 2016-02-04 09:40 +0100 |
| Message-ID | <qYnCh-69d-1@gated-at.bofh.it> (permalink) |
| References | <qYf24-oH-53@gated-at.bofh.it> <qYfbI-uu-19@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Wed, Feb 03, 2016 at 05:28:30PM -0600, Tyrel Datwyler wrote:
> The PAPR defines four valid header values for the first byte of a
> CRQ message. Namely, an unused/empty message (0x00), a valid
> command/response entry (0x80), a valid initialization entry (0xC0),
> and a transport event (0xFF). Define these values as enums and use
> them in the code in place of their magic number equivalents.
>
> Signed-off-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com>
> ---
> drivers/scsi/ibmvscsi/ibmvscsi.c | 14 +++++++-------
> drivers/scsi/ibmvscsi/viosrp.h | 7 +++++++
> 2 files changed, 14 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/scsi/ibmvscsi/ibmvscsi.c b/drivers/scsi/ibmvscsi/ibmvscsi.c
> index adfef9d..176260d 100644
> --- a/drivers/scsi/ibmvscsi/ibmvscsi.c
> +++ b/drivers/scsi/ibmvscsi/ibmvscsi.c
> @@ -182,7 +182,7 @@ static struct viosrp_crq *crq_queue_next_crq(struct crq_queue *queue)
>
> spin_lock_irqsave(&queue->lock, flags);
> crq = &queue->msgs[queue->cur];
> - if (crq->valid & 0x80) {
> + if (crq->valid & VIOSRP_CRQ_VALID) {
> if (++queue->cur == queue->size)
> queue->cur = 0;
>
> @@ -231,7 +231,7 @@ static void ibmvscsi_task(void *data)
> /* Pull all the valid messages off the CRQ */
> while ((crq = crq_queue_next_crq(&hostdata->queue)) != NULL) {
> ibmvscsi_handle_crq(crq, hostdata);
> - crq->valid = 0x00;
> + crq->valid = VIOSRP_CRQ_FREE;
> }
>
> vio_enable_interrupts(vdev);
> @@ -239,7 +239,7 @@ static void ibmvscsi_task(void *data)
> if (crq != NULL) {
> vio_disable_interrupts(vdev);
> ibmvscsi_handle_crq(crq, hostdata);
> - crq->valid = 0x00;
> + crq->valid = VIOSRP_CRQ_FREE;
> } else {
> done = 1;
> }
> @@ -474,7 +474,7 @@ static int initialize_event_pool(struct event_pool *pool,
> struct srp_event_struct *evt = &pool->events[i];
> memset(&evt->crq, 0x00, sizeof(evt->crq));
> atomic_set(&evt->free, 1);
> - evt->crq.valid = 0x80;
> + evt->crq.valid = VIOSRP_CRQ_VALID;
> evt->crq.IU_length = cpu_to_be16(sizeof(*evt->xfer_iu));
> evt->crq.IU_data_ptr = cpu_to_be64(pool->iu_token +
> sizeof(*evt->xfer_iu) * i);
> @@ -1767,7 +1767,7 @@ static void ibmvscsi_handle_crq(struct viosrp_crq *crq,
> struct srp_event_struct *evt_struct =
> (__force struct srp_event_struct *)crq->IU_data_ptr;
> switch (crq->valid) {
> - case 0xC0: /* initialization */
> + case VIOSRP_CRQ_INIT: /* initialization */
> switch (crq->format) {
> case 0x01: /* Initialization message */
> dev_info(hostdata->dev, "partner initialized\n");
> @@ -1791,7 +1791,7 @@ static void ibmvscsi_handle_crq(struct viosrp_crq *crq,
> dev_err(hostdata->dev, "unknown crq message type: %d\n", crq->format);
> }
> return;
> - case 0xFF: /* Hypervisor telling us the connection is closed */
> + case VIOSRP_CRQ_TRANSPORT: /* Hypervisor telling us the connection is closed */
> scsi_block_requests(hostdata->host);
> atomic_set(&hostdata->request_limit, 0);
> if (crq->format == 0x06) {
> @@ -1807,7 +1807,7 @@ static void ibmvscsi_handle_crq(struct viosrp_crq *crq,
> ibmvscsi_reset_host(hostdata);
> }
> return;
> - case 0x80: /* real payload */
> + case VIOSRP_CRQ_VALID: /* real payload */
> break;
> default:
> dev_err(hostdata->dev, "got an invalid message type 0x%02x\n",
> diff --git a/drivers/scsi/ibmvscsi/viosrp.h b/drivers/scsi/ibmvscsi/viosrp.h
> index d1044e9..17f2de0 100644
> --- a/drivers/scsi/ibmvscsi/viosrp.h
> +++ b/drivers/scsi/ibmvscsi/viosrp.h
> @@ -51,6 +51,13 @@ union srp_iu {
> u8 reserved[SRP_MAX_IU_LEN];
> };
>
> +enum viosrp_crq_headers {
> + VIOSRP_CRQ_FREE = 0x00,
> + VIOSRP_CRQ_VALID = 0x80,
> + VIOSRP_CRQ_INIT = 0xC0,
> + VIOSRP_CRQ_TRANSPORT = 0xFF
> +};
> +
> enum viosrp_crq_formats {
> VIOSRP_SRP_FORMAT = 0x01,
> VIOSRP_MAD_FORMAT = 0x02,
> --
> 2.5.0
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
--
Johannes Thumshirn Storage
jthumshirn@suse.de +49 911 74053 689
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: Felix Imendörffer, Jane Smithard, Graham Norton
HRB 21284 (AG Nürnberg)
Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D 2D76 0850
Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
[PATCH 0/6] ibmvscsi: code cleanup Tyrel Datwyler <tyreld@linux.vnet.ibm.com> - 2016-02-04 00:30 +0100
[PATCH 1/6] ibmvscsi: Correct values for several viosrp_crq_format enums Tyrel Datwyler <tyreld@linux.vnet.ibm.com> - 2016-02-04 00:40 +0100
Re: [PATCH 1/6] ibmvscsi: Correct values for several viosrp_crq_format enums Johannes Thumshirn <jthumshirn@suse.de> - 2016-02-04 09:40 +0100
[PATCH 2/6] ibmvscsi: Add and use enums for valid CRQ header values Tyrel Datwyler <tyreld@linux.vnet.ibm.com> - 2016-02-04 00:40 +0100
Re: [PATCH 2/6] ibmvscsi: Add and use enums for valid CRQ header values Johannes Thumshirn <jthumshirn@suse.de> - 2016-02-04 09:40 +0100
Re: [PATCH 2/6] ibmvscsi: Add and use enums for valid CRQ header values Manoj Kumar <manoj@linux.vnet.ibm.com> - 2016-02-04 21:00 +0100
Re: [PATCH 2/6] ibmvscsi: Add and use enums for valid CRQ header values Tyrel Datwyler <tyreld@linux.vnet.ibm.com> - 2016-02-04 22:30 +0100
[PATCH 4/6] ibmvscsi: Use of_root to access OF device tree root node Tyrel Datwyler <tyreld@linux.vnet.ibm.com> - 2016-02-04 00:40 +0100
Re: [PATCH 4/6] ibmvscsi: Use of_root to access OF device tree root node Johannes Thumshirn <jthumshirn@suse.de> - 2016-02-04 09:50 +0100
[PATCH 6/6] ibmvscsi: Add endian conversions to sysfs attribute show functions Tyrel Datwyler <tyreld@linux.vnet.ibm.com> - 2016-02-04 00:40 +0100
Re: [PATCH 6/6] ibmvscsi: Add endian conversions to sysfs attribute show functions Johannes Thumshirn <jthumshirn@suse.de> - 2016-02-04 09:50 +0100
[PATCH 3/6] ibmvscsi: Replace magic values in set_adpater_info() with defines Tyrel Datwyler <tyreld@linux.vnet.ibm.com> - 2016-02-04 00:40 +0100
Re: [PATCH 3/6] ibmvscsi: Replace magic values in set_adpater_info() with defines Johannes Thumshirn <jthumshirn@suse.de> - 2016-02-04 09:50 +0100
csiph-web