From: Jason Gunthorpe <jgg@nvidia.com>
To: Alexander Gordeev <agordeev@linux.ibm.com>,
David Airlie <airlied@linux.ie>,
Tony Krowiak <akrowiak@linux.ibm.com>,
Alex Williamson <alex.williamson@redhat.com>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
Cornelia Huck <cohuck@redhat.com>,
Jonathan Corbet <corbet@lwn.net>, Daniel Vetter <daniel@ffwll.ch>,
dri-devel@lists.freedesktop.org,
Eric Farman <farman@linux.ibm.com>,
Harald Freudenberger <freude@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Heiko Carstens <hca@linux.ibm.com>,
intel-gfx@lists.freedesktop.org,
intel-gvt-dev@lists.freedesktop.org,
Jani Nikula <jani.nikula@linux.intel.com>,
Jason Herne <jjherne@linux.ibm.com>,
Joonas Lahtinen <joonas.lahtinen@linux.intel.com>,
kvm@vger.kernel.org, Kirti Wankhede <kwankhede@nvidia.com>,
linux-doc@vger.kernel.org, linux-s390@vger.kernel.org,
Matthew Rosato <mjrosato@linux.ibm.com>,
Peter Oberparleiter <oberpar@linux.ibm.com>,
Halil Pasic <pasic@linux.ibm.com>,
Rodrigo Vivi <rodrigo.vivi@intel.com>,
Sven Schnelle <svens@linux.ibm.com>,
Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>,
Vineeth Vijayan <vneethv@linux.ibm.com>,
Zhenyu Wang <zhenyuw@linux.intel.com>,
Zhi Wang <zhi.a.wang@intel.com>
Cc: "Tian, Kevin" <kevin.tian@intel.com>,
"Liu, Yi L" <yi.l.liu@intel.com>, Christoph Hellwig <hch@lst.de>
Subject: [PATCH 2/9] vfio/ccw: Remove mdev from struct channel_program
Date: Tue, 12 Apr 2022 12:53:29 -0300 [thread overview]
Message-ID: <2-v1-a8faf768d202+125dd-vfio_mdev_no_group_jgg@nvidia.com> (raw)
In-Reply-To: <0-v1-a8faf768d202+125dd-vfio_mdev_no_group_jgg@nvidia.com>
The next patch wants the vfio_device instead. There is no reason to store
a pointer here since we can container_of back to the vfio_device.
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
---
drivers/s390/cio/vfio_ccw_cp.c | 44 +++++++++++++++++++--------------
drivers/s390/cio/vfio_ccw_cp.h | 4 +--
drivers/s390/cio/vfio_ccw_fsm.c | 3 +--
3 files changed, 28 insertions(+), 23 deletions(-)
diff --git a/drivers/s390/cio/vfio_ccw_cp.c b/drivers/s390/cio/vfio_ccw_cp.c
index 8d1b2771c1aa02..af5048a1ba8894 100644
--- a/drivers/s390/cio/vfio_ccw_cp.c
+++ b/drivers/s390/cio/vfio_ccw_cp.c
@@ -16,6 +16,7 @@
#include <asm/idals.h>
#include "vfio_ccw_cp.h"
+#include "vfio_ccw_private.h"
struct pfn_array {
/* Starting guest physical I/O address. */
@@ -98,17 +99,17 @@ static int pfn_array_alloc(struct pfn_array *pa, u64 iova, unsigned int len)
* If the pin request partially succeeds, or fails completely,
* all pages are left unpinned and a negative error value is returned.
*/
-static int pfn_array_pin(struct pfn_array *pa, struct device *mdev)
+static int pfn_array_pin(struct pfn_array *pa, struct vfio_device *vdev)
{
int ret = 0;
- ret = vfio_pin_pages(mdev, pa->pa_iova_pfn, pa->pa_nr,
+ ret = vfio_pin_pages(vdev->dev, pa->pa_iova_pfn, pa->pa_nr,
IOMMU_READ | IOMMU_WRITE, pa->pa_pfn);
if (ret < 0) {
goto err_out;
} else if (ret > 0 && ret != pa->pa_nr) {
- vfio_unpin_pages(mdev, pa->pa_iova_pfn, ret);
+ vfio_unpin_pages(vdev->dev, pa->pa_iova_pfn, ret);
ret = -EINVAL;
goto err_out;
}
@@ -122,11 +123,11 @@ static int pfn_array_pin(struct pfn_array *pa, struct device *mdev)
}
/* Unpin the pages before releasing the memory. */
-static void pfn_array_unpin_free(struct pfn_array *pa, struct device *mdev)
+static void pfn_array_unpin_free(struct pfn_array *pa, struct vfio_device *vdev)
{
/* Only unpin if any pages were pinned to begin with */
if (pa->pa_nr)
- vfio_unpin_pages(mdev, pa->pa_iova_pfn, pa->pa_nr);
+ vfio_unpin_pages(vdev->dev, pa->pa_iova_pfn, pa->pa_nr);
pa->pa_nr = 0;
kfree(pa->pa_iova_pfn);
}
@@ -190,7 +191,7 @@ static void convert_ccw0_to_ccw1(struct ccw1 *source, unsigned long len)
* Within the domain (@mdev), copy @n bytes from a guest physical
* address (@iova) to a host physical address (@to).
*/
-static long copy_from_iova(struct device *mdev,
+static long copy_from_iova(struct vfio_device *vdev,
void *to, u64 iova,
unsigned long n)
{
@@ -203,9 +204,9 @@ static long copy_from_iova(struct device *mdev,
if (ret < 0)
return ret;
- ret = pfn_array_pin(&pa, mdev);
+ ret = pfn_array_pin(&pa, vdev);
if (ret < 0) {
- pfn_array_unpin_free(&pa, mdev);
+ pfn_array_unpin_free(&pa, vdev);
return ret;
}
@@ -226,7 +227,7 @@ static long copy_from_iova(struct device *mdev,
break;
}
- pfn_array_unpin_free(&pa, mdev);
+ pfn_array_unpin_free(&pa, vdev);
return l;
}
@@ -423,11 +424,13 @@ static int ccwchain_loop_tic(struct ccwchain *chain,
static int ccwchain_handle_ccw(u32 cda, struct channel_program *cp)
{
+ struct vfio_device *vdev =
+ &container_of(cp, struct vfio_ccw_private, cp)->vdev;
struct ccwchain *chain;
int len, ret;
/* Copy 2K (the most we support today) of possible CCWs */
- len = copy_from_iova(cp->mdev, cp->guest_cp, cda,
+ len = copy_from_iova(vdev, cp->guest_cp, cda,
CCWCHAIN_LEN_MAX * sizeof(struct ccw1));
if (len)
return len;
@@ -508,6 +511,8 @@ static int ccwchain_fetch_direct(struct ccwchain *chain,
int idx,
struct channel_program *cp)
{
+ struct vfio_device *vdev =
+ &container_of(cp, struct vfio_ccw_private, cp)->vdev;
struct ccw1 *ccw;
struct pfn_array *pa;
u64 iova;
@@ -526,7 +531,7 @@ static int ccwchain_fetch_direct(struct ccwchain *chain,
if (ccw_is_idal(ccw)) {
/* Read first IDAW to see if it's 4K-aligned or not. */
/* All subsequent IDAws will be 4K-aligned. */
- ret = copy_from_iova(cp->mdev, &iova, ccw->cda, sizeof(iova));
+ ret = copy_from_iova(vdev, &iova, ccw->cda, sizeof(iova));
if (ret)
return ret;
} else {
@@ -555,7 +560,7 @@ static int ccwchain_fetch_direct(struct ccwchain *chain,
if (ccw_is_idal(ccw)) {
/* Copy guest IDAL into host IDAL */
- ret = copy_from_iova(cp->mdev, idaws, ccw->cda, idal_len);
+ ret = copy_from_iova(vdev, idaws, ccw->cda, idal_len);
if (ret)
goto out_unpin;
@@ -574,7 +579,7 @@ static int ccwchain_fetch_direct(struct ccwchain *chain,
}
if (ccw_does_data_transfer(ccw)) {
- ret = pfn_array_pin(pa, cp->mdev);
+ ret = pfn_array_pin(pa, vdev);
if (ret < 0)
goto out_unpin;
} else {
@@ -590,7 +595,7 @@ static int ccwchain_fetch_direct(struct ccwchain *chain,
return 0;
out_unpin:
- pfn_array_unpin_free(pa, cp->mdev);
+ pfn_array_unpin_free(pa, vdev);
out_free_idaws:
kfree(idaws);
out_init:
@@ -632,8 +637,10 @@ static int ccwchain_fetch_one(struct ccwchain *chain,
* Returns:
* %0 on success and a negative error value on failure.
*/
-int cp_init(struct channel_program *cp, struct device *mdev, union orb *orb)
+int cp_init(struct channel_program *cp, union orb *orb)
{
+ struct vfio_device *vdev =
+ &container_of(cp, struct vfio_ccw_private, cp)->vdev;
/* custom ratelimit used to avoid flood during guest IPL */
static DEFINE_RATELIMIT_STATE(ratelimit_state, 5 * HZ, 1);
int ret;
@@ -650,11 +657,10 @@ int cp_init(struct channel_program *cp, struct device *mdev, union orb *orb)
* the problem if something does break.
*/
if (!orb->cmd.pfch && __ratelimit(&ratelimit_state))
- dev_warn(mdev, "Prefetching channel program even though prefetch not specified in ORB");
+ dev_warn(vdev->dev, "Prefetching channel program even though prefetch not specified in ORB");
INIT_LIST_HEAD(&cp->ccwchain_list);
memcpy(&cp->orb, orb, sizeof(*orb));
- cp->mdev = mdev;
/* Build a ccwchain for the first CCW segment */
ret = ccwchain_handle_ccw(orb->cmd.cpa, cp);
@@ -682,6 +688,8 @@ int cp_init(struct channel_program *cp, struct device *mdev, union orb *orb)
*/
void cp_free(struct channel_program *cp)
{
+ struct vfio_device *vdev =
+ &container_of(cp, struct vfio_ccw_private, cp)->vdev;
struct ccwchain *chain, *temp;
int i;
@@ -691,7 +699,7 @@ void cp_free(struct channel_program *cp)
cp->initialized = false;
list_for_each_entry_safe(chain, temp, &cp->ccwchain_list, next) {
for (i = 0; i < chain->ch_len; i++) {
- pfn_array_unpin_free(chain->ch_pa + i, cp->mdev);
+ pfn_array_unpin_free(chain->ch_pa + i, vdev);
ccwchain_cda_free(chain, i);
}
ccwchain_free(chain);
diff --git a/drivers/s390/cio/vfio_ccw_cp.h b/drivers/s390/cio/vfio_ccw_cp.h
index ba31240ce96594..e4c436199b4cda 100644
--- a/drivers/s390/cio/vfio_ccw_cp.h
+++ b/drivers/s390/cio/vfio_ccw_cp.h
@@ -37,13 +37,11 @@
struct channel_program {
struct list_head ccwchain_list;
union orb orb;
- struct device *mdev;
bool initialized;
struct ccw1 *guest_cp;
};
-extern int cp_init(struct channel_program *cp, struct device *mdev,
- union orb *orb);
+extern int cp_init(struct channel_program *cp, union orb *orb);
extern void cp_free(struct channel_program *cp);
extern int cp_prefetch(struct channel_program *cp);
extern union orb *cp_get_orb(struct channel_program *cp, u32 intparm, u8 lpm);
diff --git a/drivers/s390/cio/vfio_ccw_fsm.c b/drivers/s390/cio/vfio_ccw_fsm.c
index e435a9cd92dacf..8483a266051c21 100644
--- a/drivers/s390/cio/vfio_ccw_fsm.c
+++ b/drivers/s390/cio/vfio_ccw_fsm.c
@@ -262,8 +262,7 @@ static void fsm_io_request(struct vfio_ccw_private *private,
errstr = "transport mode";
goto err_out;
}
- io_region->ret_code = cp_init(&private->cp, mdev_dev(mdev),
- orb);
+ io_region->ret_code = cp_init(&private->cp, orb);
if (io_region->ret_code) {
VFIO_CCW_MSG_EVENT(2,
"%pUl (%x.%x.%04x): cp_init=%d\n",
--
2.35.1
next prev parent reply other threads:[~2022-04-12 15:54 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-12 15:53 [PATCH 0/9] Make the rest of the VFIO driver interface use vfio_device Jason Gunthorpe
2022-04-12 15:53 ` [PATCH 1/9] vfio: Make vfio_(un)register_notifier accept a vfio_device Jason Gunthorpe
[not found] ` <20220413055524.GB32092@lst.de>
2022-04-13 11:39 ` Jason Gunthorpe
[not found] ` <20220413160601.GA29631@lst.de>
2022-04-13 16:18 ` Jason Gunthorpe
[not found] ` <20220413162946.GB31053@lst.de>
2022-04-13 17:37 ` Jason Gunthorpe
2022-04-13 19:17 ` Wang, Zhi A
2022-04-13 20:04 ` Jason Gunthorpe
2022-04-13 21:08 ` Wang, Zhi A
2022-04-13 23:12 ` Jason Gunthorpe
2022-04-14 2:04 ` Tian, Kevin
2022-04-14 2:15 ` Tian, Kevin
2022-04-14 19:25 ` Eric Farman
2022-04-18 15:28 ` Tony Krowiak
2022-04-18 15:44 ` Jason Gunthorpe
2022-04-18 15:52 ` Tony Krowiak
2022-04-18 15:29 ` Jason J. Herne
2022-04-12 15:53 ` Jason Gunthorpe [this message]
2022-04-14 19:25 ` [PATCH 2/9] vfio/ccw: Remove mdev from struct channel_program Eric Farman
2022-04-12 15:53 ` [PATCH 3/9] vfio/mdev: Pass in a struct vfio_device * to vfio_pin/unpin_pages() Jason Gunthorpe
[not found] ` <20220413055717.GC32092@lst.de>
2022-04-13 11:40 ` Jason Gunthorpe
2022-04-14 19:26 ` Eric Farman
2022-04-18 15:25 ` Jason J. Herne
2022-04-19 17:00 ` Jason Gunthorpe
2022-04-18 15:56 ` Tony Krowiak
2022-04-12 15:53 ` [PATCH 4/9] drm/i915/gvt: Change from vfio_group_(un)pin_pages to vfio_(un)pin_pages Jason Gunthorpe
[not found] ` <20220413060110.GF32092@lst.de>
2022-04-13 13:39 ` Jason Gunthorpe
2022-04-12 15:53 ` [PATCH 5/9] vfio: Pass in a struct vfio_device * to vfio_dma_rw() Jason Gunthorpe
[not found] ` <20220413060008.GE32092@lst.de>
2022-04-13 13:39 ` Jason Gunthorpe
2022-04-12 15:53 ` [PATCH 6/9] drm/i915/gvt: Add missing module_put() in error unwind Jason Gunthorpe
2022-04-12 15:53 ` [PATCH 7/9] drm/i915/gvt: Delete kvmgt_vdev::vfio_group Jason Gunthorpe
2022-04-12 15:53 ` [PATCH 8/9] vfio: Remove dead code Jason Gunthorpe
2022-04-12 15:53 ` [PATCH 9/9] vfio: Remove calls to vfio_group_add_container_user() Jason Gunthorpe
[not found] ` <20220413061105.GA32701@lst.de>
2022-04-13 14:03 ` Jason Gunthorpe
2022-04-14 13:51 ` Matthew Rosato
2022-04-14 14:22 ` Jason Gunthorpe
2022-04-15 2:32 ` Tian, Kevin
2022-04-15 12:07 ` Jason Gunthorpe
2022-04-15 23:45 ` Tian, Kevin
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=2-v1-a8faf768d202+125dd-vfio_mdev_no_group_jgg@nvidia.com \
--to=jgg@nvidia.com \
--cc=agordeev@linux.ibm.com \
--cc=airlied@linux.ie \
--cc=akrowiak@linux.ibm.com \
--cc=alex.williamson@redhat.com \
--cc=borntraeger@linux.ibm.com \
--cc=cohuck@redhat.com \
--cc=corbet@lwn.net \
--cc=daniel@ffwll.ch \
--cc=dri-devel@lists.freedesktop.org \
--cc=farman@linux.ibm.com \
--cc=freude@linux.ibm.com \
--cc=gor@linux.ibm.com \
--cc=hca@linux.ibm.com \
--cc=hch@lst.de \
--cc=intel-gfx@lists.freedesktop.org \
--cc=intel-gvt-dev@lists.freedesktop.org \
--cc=jani.nikula@linux.intel.com \
--cc=jjherne@linux.ibm.com \
--cc=joonas.lahtinen@linux.intel.com \
--cc=kevin.tian@intel.com \
--cc=kvm@vger.kernel.org \
--cc=kwankhede@nvidia.com \
--cc=linux-doc@vger.kernel.org \
--cc=linux-s390@vger.kernel.org \
--cc=mjrosato@linux.ibm.com \
--cc=oberpar@linux.ibm.com \
--cc=pasic@linux.ibm.com \
--cc=rodrigo.vivi@intel.com \
--cc=svens@linux.ibm.com \
--cc=tvrtko.ursulin@linux.intel.com \
--cc=vneethv@linux.ibm.com \
--cc=yi.l.liu@intel.com \
--cc=zhenyuw@linux.intel.com \
--cc=zhi.a.wang@intel.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).