From: Uma Krishnan <ukrishn@linux.vnet.ibm.com>
To: linux-scsi@vger.kernel.org,
James Bottomley <jejb@linux.vnet.ibm.com>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
"Matthew R. Ochs" <mrochs@linux.vnet.ibm.com>,
"Manoj N. Kumar" <manoj@linux.vnet.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org,
Andrew Donnellan <andrew.donnellan@au1.ibm.com>,
Frederic Barrat <fbarrat@linux.vnet.ibm.com>,
Christophe Lombard <clombard@linux.vnet.ibm.com>
Subject: [PATCH v2 09/38] cxlflash: Setup AFU acTag range
Date: Mon, 26 Feb 2018 16:21:09 -0600 [thread overview]
Message-ID: <1519683669-17075-1-git-send-email-ukrishn@linux.vnet.ibm.com> (raw)
In-Reply-To: <1519683513-16731-1-git-send-email-ukrishn@linux.vnet.ibm.com>
The OCXL specification supports distributing acTags amongst different
AFUs and functions on the link. As cxlflash devices are expected to only
support a single AFU and function, the entire range that was assigned to
the function is also assigned to the AFU.
Signed-off-by: Uma Krishnan <ukrishn@linux.vnet.ibm.com>
Acked-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
---
drivers/scsi/cxlflash/ocxl_hw.c | 13 +++++++++++++
drivers/scsi/cxlflash/ocxl_hw.h | 2 ++
2 files changed, 15 insertions(+)
diff --git a/drivers/scsi/cxlflash/ocxl_hw.c b/drivers/scsi/cxlflash/ocxl_hw.c
index 2325030..d01847d9 100644
--- a/drivers/scsi/cxlflash/ocxl_hw.c
+++ b/drivers/scsi/cxlflash/ocxl_hw.c
@@ -89,6 +89,9 @@ static int ocxlflash_config_afu(struct pci_dev *pdev, struct ocxl_hw_afu *afu)
struct ocxl_afu_config *acfg = &afu->acfg;
struct ocxl_fn_config *fcfg = &afu->fcfg;
struct device *dev = &pdev->dev;
+ int count;
+ int base;
+ int pos;
int rc = 0;
/* Read AFU config at index 0 */
@@ -98,6 +101,16 @@ static int ocxlflash_config_afu(struct pci_dev *pdev, struct ocxl_hw_afu *afu)
__func__, rc);
goto out;
}
+
+ /* Only one AFU per function is supported, so actag_base is same */
+ base = afu->fn_actag_base;
+ count = min_t(int, acfg->actag_supported, afu->fn_actag_enabled);
+ pos = acfg->dvsec_afu_control_pos;
+
+ ocxl_config_set_afu_actag(pdev, pos, base, count);
+ dev_dbg(dev, "%s: acTag base=%d enabled=%d\n", __func__, base, count);
+ afu->afu_actag_base = base;
+ afu->afu_actag_enabled = count;
out:
return rc;
}
diff --git a/drivers/scsi/cxlflash/ocxl_hw.h b/drivers/scsi/cxlflash/ocxl_hw.h
index f6af247..9c675fa 100644
--- a/drivers/scsi/cxlflash/ocxl_hw.h
+++ b/drivers/scsi/cxlflash/ocxl_hw.h
@@ -22,4 +22,6 @@ struct ocxl_hw_afu {
int fn_actag_base; /* Function acTag base */
int fn_actag_enabled; /* Function acTag number enabled */
+ int afu_actag_base; /* AFU acTag base */
+ int afu_actag_enabled; /* AFU acTag number enabled */
};
--
2.1.0
next prev parent reply other threads:[~2018-02-26 22:21 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-26 22:18 [PATCH v2 00/38] cxlflash: OCXL transport support Uma Krishnan
2018-02-26 22:19 ` [PATCH v2 01/38] cxlflash: Preserve number of interrupts for master contexts Uma Krishnan
2018-02-26 22:19 ` [PATCH v2 02/38] cxlflash: Avoid clobbering context control register value Uma Krishnan
2018-02-26 22:20 ` [PATCH v2 03/38] cxlflash: Add argument identifier names Uma Krishnan
2018-02-26 22:20 ` [PATCH v2 04/38] cxlflash: Introduce OCXL backend Uma Krishnan
2018-03-07 4:44 ` Andrew Donnellan
2018-02-26 22:20 ` [PATCH v2 05/38] cxlflash: Hardware AFU for OCXL Uma Krishnan
2018-03-07 5:47 ` Andrew Donnellan
2018-02-26 22:20 ` [PATCH v2 06/38] cxlflash: Read host function configuration Uma Krishnan
2018-03-07 6:37 ` Andrew Donnellan
2018-03-22 15:43 ` Frederic Barrat
2018-02-26 22:20 ` [PATCH v2 07/38] cxlflash: Setup function acTag range Uma Krishnan
2018-03-09 3:51 ` Andrew Donnellan
2018-03-22 15:48 ` Frederic Barrat
2018-02-26 22:21 ` [PATCH v2 08/38] cxlflash: Read host AFU configuration Uma Krishnan
2018-03-09 4:10 ` Andrew Donnellan
2018-03-22 15:52 ` Frederic Barrat
2018-03-22 16:08 ` Frederic Barrat
2018-02-26 22:21 ` Uma Krishnan [this message]
2018-03-09 4:19 ` [PATCH v2 09/38] cxlflash: Setup AFU acTag range Andrew Donnellan
2018-03-22 16:12 ` Frederic Barrat
2018-02-26 22:21 ` [PATCH v2 10/38] cxlflash: Setup AFU PASID Uma Krishnan
2018-03-09 4:29 ` Andrew Donnellan
2018-03-22 16:23 ` Frederic Barrat
2018-02-26 22:21 ` [PATCH v2 11/38] cxlflash: Adapter context support for OCXL Uma Krishnan
2018-03-22 16:32 ` Frederic Barrat
2018-02-26 22:21 ` [PATCH v2 12/38] cxlflash: Use IDR to manage adapter contexts Uma Krishnan
2018-03-22 16:40 ` Frederic Barrat
2018-03-22 22:26 ` Uma Krishnan
2018-02-26 22:21 ` [PATCH v2 13/38] cxlflash: Support adapter file descriptors for OCXL Uma Krishnan
2018-03-22 17:12 ` Frederic Barrat
2018-03-23 17:45 ` Uma Krishnan
2018-02-26 22:22 ` [PATCH v2 14/38] cxlflash: Support adapter context discovery Uma Krishnan
2018-02-26 22:22 ` [PATCH v2 15/38] cxlflash: Support image reload policy modification Uma Krishnan
2018-02-26 22:22 ` [PATCH v2 16/38] cxlflash: MMIO map the AFU Uma Krishnan
2018-03-22 17:19 ` Frederic Barrat
2018-02-26 22:22 ` [PATCH v2 17/38] cxlflash: Support starting an adapter context Uma Krishnan
2018-02-26 22:22 ` [PATCH v2 18/38] cxlflash: Support process specific mappings Uma Krishnan
2018-02-26 22:22 ` [PATCH v2 19/38] cxlflash: Support AFU state toggling Uma Krishnan
2018-03-22 17:26 ` Frederic Barrat
2018-02-26 22:22 ` [PATCH v2 20/38] cxlflash: Support reading adapter VPD data Uma Krishnan
2018-02-26 22:22 ` [PATCH v2 21/38] cxlflash: Setup function OCXL link Uma Krishnan
2018-03-22 17:31 ` Frederic Barrat
2018-02-26 22:23 ` [PATCH v2 22/38] cxlflash: Setup OCXL transaction layer Uma Krishnan
2018-02-26 22:23 ` [PATCH v2 23/38] cxlflash: Support process element lifecycle Uma Krishnan
2018-02-26 22:23 ` [PATCH v2 24/38] cxlflash: Support AFU interrupt management Uma Krishnan
2018-02-26 22:23 ` [PATCH v2 25/38] cxlflash: Support AFU interrupt mapping and registration Uma Krishnan
2018-02-26 22:23 ` [PATCH v2 26/38] cxlflash: Support starting user contexts Uma Krishnan
2018-02-26 22:23 ` [PATCH v2 27/38] cxlflash: Support adapter context polling Uma Krishnan
2018-02-26 22:23 ` [PATCH v2 28/38] cxlflash: Support adapter context reading Uma Krishnan
2018-02-26 22:23 ` [PATCH v2 29/38] cxlflash: Support adapter context mmap and release Uma Krishnan
2018-02-26 22:24 ` [PATCH v2 30/38] cxlflash: Support file descriptor mapping Uma Krishnan
2018-02-26 22:24 ` [PATCH v2 31/38] cxlflash: Introduce object handle fop Uma Krishnan
2018-02-26 22:24 ` [PATCH v2 32/38] cxlflash: Setup LISNs for user contexts Uma Krishnan
2018-02-26 22:24 ` [PATCH v2 33/38] cxlflash: Setup LISNs for master contexts Uma Krishnan
2018-02-26 22:24 ` [PATCH v2 34/38] cxlflash: Update synchronous interrupt status bits Uma Krishnan
2018-02-26 22:24 ` [PATCH v2 35/38] cxlflash: Introduce OCXL context state machine Uma Krishnan
2018-02-26 22:24 ` [PATCH v2 36/38] cxlflash: Register for translation errors Uma Krishnan
2018-02-26 22:24 ` [PATCH v2 37/38] cxlflash: Support AFU reset Uma Krishnan
2018-02-26 22:25 ` [PATCH v2 38/38] cxlflash: Enable OCXL operations Uma Krishnan
2018-03-06 18:01 ` [PATCH v2 00/38] cxlflash: OCXL transport support Martin K. Petersen
2018-03-09 5:08 ` Andrew Donnellan
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1519683669-17075-1-git-send-email-ukrishn@linux.vnet.ibm.com \
--to=ukrishn@linux.vnet.ibm.com \
--cc=andrew.donnellan@au1.ibm.com \
--cc=clombard@linux.vnet.ibm.com \
--cc=fbarrat@linux.vnet.ibm.com \
--cc=jejb@linux.vnet.ibm.com \
--cc=linux-scsi@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=manoj@linux.vnet.ibm.com \
--cc=martin.petersen@oracle.com \
--cc=mrochs@linux.vnet.ibm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).