From: Dave Jiang <dave.jiang@intel.com>
To: alex.williamson@redhat.com, kwankhede@nvidia.com,
tglx@linutronix.de, vkoul@kernel.org
Cc: megha.dey@intel.com, jacob.jun.pan@intel.com,
ashok.raj@intel.com, jgg@mellanox.com, yi.l.liu@intel.com,
baolu.lu@intel.com, kevin.tian@intel.com,
sanjay.k.kumar@intel.com, tony.luck@intel.com,
dan.j.williams@intel.com, eric.auger@redhat.com,
parav@mellanox.com, netanelg@mellanox.com, shahafs@mellanox.com,
pbonzini@redhat.com, dmaengine@vger.kernel.org,
linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Subject: [PATCH v5 06/14] vfio/mdev: idxd: add mdev type as a new wq type
Date: Fri, 05 Feb 2021 13:53:31 -0700 [thread overview]
Message-ID: <161255841136.339900.9537818102228577552.stgit@djiang5-desk3.ch.intel.com> (raw)
In-Reply-To: <161255810396.339900.7646244556839438765.stgit@djiang5-desk3.ch.intel.com>
Add "mdev" wq type and support helpers. The mdev wq type marks the wq
to be utilized as a VFIO mediated device.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
---
drivers/dma/idxd/idxd.h | 2 ++
drivers/dma/idxd/sysfs.c | 13 +++++++++++--
2 files changed, 13 insertions(+), 2 deletions(-)
diff --git a/drivers/dma/idxd/idxd.h b/drivers/dma/idxd/idxd.h
index a271942df2be..67428c8d476d 100644
--- a/drivers/dma/idxd/idxd.h
+++ b/drivers/dma/idxd/idxd.h
@@ -73,6 +73,7 @@ enum idxd_wq_type {
IDXD_WQT_NONE = 0,
IDXD_WQT_KERNEL,
IDXD_WQT_USER,
+ IDXD_WQT_MDEV,
};
struct idxd_cdev {
@@ -344,6 +345,7 @@ void idxd_cleanup_sysfs(struct idxd_device *idxd);
int idxd_register_driver(void);
void idxd_unregister_driver(void);
struct bus_type *idxd_get_bus_type(struct idxd_device *idxd);
+bool is_idxd_wq_mdev(struct idxd_wq *wq);
/* device interrupt control */
irqreturn_t idxd_irq_handler(int vec, void *data);
diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c
index ab5c76e1226b..13d20cbd4cf6 100644
--- a/drivers/dma/idxd/sysfs.c
+++ b/drivers/dma/idxd/sysfs.c
@@ -14,6 +14,7 @@ static char *idxd_wq_type_names[] = {
[IDXD_WQT_NONE] = "none",
[IDXD_WQT_KERNEL] = "kernel",
[IDXD_WQT_USER] = "user",
+ [IDXD_WQT_MDEV] = "mdev",
};
static void idxd_conf_device_release(struct device *dev)
@@ -79,6 +80,11 @@ static inline bool is_idxd_wq_cdev(struct idxd_wq *wq)
return wq->type == IDXD_WQT_USER;
}
+inline bool is_idxd_wq_mdev(struct idxd_wq *wq)
+{
+ return wq->type == IDXD_WQT_MDEV ? true : false;
+}
+
static int idxd_config_bus_match(struct device *dev,
struct device_driver *drv)
{
@@ -1151,8 +1157,9 @@ static ssize_t wq_type_show(struct device *dev,
return sprintf(buf, "%s\n",
idxd_wq_type_names[IDXD_WQT_KERNEL]);
case IDXD_WQT_USER:
- return sprintf(buf, "%s\n",
- idxd_wq_type_names[IDXD_WQT_USER]);
+ return sprintf(buf, "%s\n", idxd_wq_type_names[IDXD_WQT_USER]);
+ case IDXD_WQT_MDEV:
+ return sprintf(buf, "%s\n", idxd_wq_type_names[IDXD_WQT_MDEV]);
case IDXD_WQT_NONE:
default:
return sprintf(buf, "%s\n",
@@ -1179,6 +1186,8 @@ static ssize_t wq_type_store(struct device *dev,
wq->type = IDXD_WQT_KERNEL;
else if (sysfs_streq(buf, idxd_wq_type_names[IDXD_WQT_USER]))
wq->type = IDXD_WQT_USER;
+ else if (sysfs_streq(buf, idxd_wq_type_names[IDXD_WQT_MDEV]))
+ wq->type = IDXD_WQT_MDEV;
else
return -EINVAL;
next prev parent reply other threads:[~2021-02-05 21:07 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-05 20:52 [PATCH v5 00/14] Add VFIO mediated device support and DEV-MSI support for the idxd driver Dave Jiang
2021-02-05 20:52 ` [PATCH v5 01/14] vfio/mdev: idxd: add theory of operation documentation for idxd mdev Dave Jiang
2021-02-05 20:53 ` [PATCH v5 02/14] dmaengine: idxd: add IMS detection in base driver Dave Jiang
2021-02-10 23:30 ` Jason Gunthorpe
2021-02-10 23:32 ` Dave Jiang
2021-02-05 20:53 ` [PATCH v5 03/14] dmaengine: idxd: add device support functions in prep for mdev Dave Jiang
2021-02-05 20:53 ` [PATCH v5 04/14] vfio/mdev: idxd: Add auxialary device plumbing for idxd mdev support Dave Jiang
2021-02-10 23:46 ` Jason Gunthorpe
2021-02-12 18:56 ` Dave Jiang
2021-02-12 19:14 ` Jason Gunthorpe
2021-02-05 20:53 ` [PATCH v5 05/14] vfio/mdev: idxd: add basic mdev registration and helper functions Dave Jiang
2021-02-10 23:59 ` Jason Gunthorpe
2021-02-16 19:04 ` Dave Jiang
2021-02-16 20:39 ` Dan Williams
2021-02-16 21:31 ` Jason Gunthorpe
2021-02-16 21:33 ` Jason Gunthorpe
2021-02-19 1:42 ` Tian, Kevin
2021-03-02 0:23 ` Dave Jiang
2021-03-02 0:29 ` Jason Gunthorpe
2021-03-02 0:48 ` Dave Jiang
2021-03-02 0:50 ` Jason Gunthorpe
2021-02-05 20:53 ` Dave Jiang [this message]
2021-02-05 20:53 ` [PATCH v5 07/14] vfio/mdev: idxd: add 1dwq-v1 mdev type Dave Jiang
2021-02-11 0:00 ` Jason Gunthorpe
2021-02-05 20:53 ` [PATCH v5 08/14] vfio/mdev: idxd: add emulation rw routines Dave Jiang
2021-02-05 20:53 ` [PATCH v5 09/14] vfio/mdev: idxd: prep for virtual device commands Dave Jiang
2021-02-05 20:53 ` [PATCH v5 10/14] vfio/mdev: idxd: virtual device commands emulation Dave Jiang
2021-02-05 20:54 ` [PATCH v5 11/14] vfio/mdev: idxd: ims setup for the vdcm Dave Jiang
2021-02-05 20:54 ` [PATCH v5 12/14] vfio/mdev: idxd: add irq bypass for IMS vectors Dave Jiang
2021-02-05 20:54 ` [PATCH v5 13/14] vfio/mdev: idxd: add new wq state for mdev Dave Jiang
2021-02-05 20:54 ` [PATCH v5 14/14] vfio/mdev: idxd: add error notification from host driver to mediated device Dave Jiang
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