From: Christian Borntraeger <borntraeger@linux.ibm.com>
To: Matthew Rosato <mjrosato@linux.ibm.com>, linux-s390@vger.kernel.org
Cc: alex.williamson@redhat.com, cohuck@redhat.com,
schnelle@linux.ibm.com, farman@linux.ibm.com,
pmorel@linux.ibm.com, hca@linux.ibm.com, gor@linux.ibm.com,
gerald.schaefer@linux.ibm.com, agordeev@linux.ibm.com,
frankja@linux.ibm.com, david@redhat.com, imbrenda@linux.ibm.com,
vneethv@linux.ibm.com, oberpar@linux.ibm.com,
freude@linux.ibm.com, thuth@redhat.com, pasic@linux.ibm.com,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 12/32] s390/pci: get SHM information from list pci
Date: Thu, 9 Dec 2021 16:47:02 +0100 [thread overview]
Message-ID: <cabce091-531a-de77-5b90-9ee1f1482da7@linux.ibm.com> (raw)
In-Reply-To: <20211207205743.150299-13-mjrosato@linux.ibm.com>
Am 07.12.21 um 21:57 schrieb Matthew Rosato:
> KVM will need information on the special handle mask used to indicate
> emulated devices. In order to obtain this, a new type of list pci call
> must be made to gather the information. Remove the unused data pointer
> from clp_list_pci and __clp_add and instead optionally pass a pointer to
> a model-dependent-data field. Additionally, allow for clp_list_pci calls
> that don't specify a callback - in this case, just do the first pass of
> list pci and exit.
>
> Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
> ---
> arch/s390/include/asm/pci.h | 6 ++++++
> arch/s390/include/asm/pci_clp.h | 2 +-
> arch/s390/pci/pci.c | 19 +++++++++++++++++++
> arch/s390/pci/pci_clp.c | 16 ++++++++++------
> 4 files changed, 36 insertions(+), 7 deletions(-)
>
> diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h
> index 00a2c24d6d2b..86f43644756d 100644
> --- a/arch/s390/include/asm/pci.h
> +++ b/arch/s390/include/asm/pci.h
> @@ -219,12 +219,18 @@ int zpci_unregister_ioat(struct zpci_dev *, u8);
> void zpci_remove_reserved_devices(void);
> void zpci_update_fh(struct zpci_dev *zdev, u32 fh);
>
> +int zpci_get_mdd(u32 *mdd);
> +
> /* CLP */
> +void *clp_alloc_block(gfp_t gfp_mask);
> +void clp_free_block(void *ptr);
> int clp_setup_writeback_mio(void);
> int clp_scan_pci_devices(void);
> int clp_query_pci_fn(struct zpci_dev *zdev);
> int clp_enable_fh(struct zpci_dev *zdev, u32 *fh, u8 nr_dma_as);
> int clp_disable_fh(struct zpci_dev *zdev, u32 *fh);
> +int clp_list_pci(struct clp_req_rsp_list_pci *rrb, u32 *mdd,
> + void (*cb)(struct clp_fh_list_entry *));
> int clp_get_state(u32 fid, enum zpci_state *state);
> int clp_refresh_fh(u32 fid, u32 *fh);
>
> diff --git a/arch/s390/include/asm/pci_clp.h b/arch/s390/include/asm/pci_clp.h
> index 124fadfb74b9..d6bc324763f3 100644
> --- a/arch/s390/include/asm/pci_clp.h
> +++ b/arch/s390/include/asm/pci_clp.h
> @@ -76,7 +76,7 @@ struct clp_req_list_pci {
> struct clp_rsp_list_pci {
> struct clp_rsp_hdr hdr;
> u64 resume_token;
> - u32 reserved2;
> + u32 mdd;
> u16 max_fn;
> u8 : 7;
> u8 uid_checking : 1;
> diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
> index af1c0ae017b1..175854c861cd 100644
> --- a/arch/s390/pci/pci.c
> +++ b/arch/s390/pci/pci.c
> @@ -531,6 +531,25 @@ void zpci_update_fh(struct zpci_dev *zdev, u32 fh)
> zpci_do_update_iomap_fh(zdev, fh);
> }
>
> +int zpci_get_mdd(u32 *mdd)
> +{
> + struct clp_req_rsp_list_pci *rrb;
> + int rc;
> +
> + if (!mdd)
> + return -EINVAL;
> +
> + rrb = clp_alloc_block(GFP_KERNEL);
> + if (!rrb)
> + return -ENOMEM;
> +
> + rc = clp_list_pci(rrb, mdd, NULL);
> +
> + clp_free_block(rrb);
> + return rc;
> +}
> +EXPORT_SYMBOL_GPL(zpci_get_mdd);
Maybe move this into pci_clp.c to avoid the export of clp_alloc_block and void clp_free_block?
Niklas?
In any case the code looks correct from a HW perspective.
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
> +
> static struct resource *__alloc_res(struct zpci_dev *zdev, unsigned long start,
> unsigned long size, unsigned long flags)
> {
> diff --git a/arch/s390/pci/pci_clp.c b/arch/s390/pci/pci_clp.c
> index bc7446566cbc..e18a548ac22d 100644
> --- a/arch/s390/pci/pci_clp.c
> +++ b/arch/s390/pci/pci_clp.c
> @@ -84,12 +84,12 @@ static __always_inline int clp_req(void *data, unsigned int lps)
> return cc;
> }
>
> -static void *clp_alloc_block(gfp_t gfp_mask)
> +void *clp_alloc_block(gfp_t gfp_mask)
> {
> return (void *) __get_free_pages(gfp_mask, get_order(CLP_BLK_SIZE));
> }
>
> -static void clp_free_block(void *ptr)
> +void clp_free_block(void *ptr)
> {
> free_pages((unsigned long) ptr, get_order(CLP_BLK_SIZE));
> }
> @@ -358,8 +358,8 @@ static int clp_list_pci_req(struct clp_req_rsp_list_pci *rrb,
> return rc;
> }
>
> -static int clp_list_pci(struct clp_req_rsp_list_pci *rrb, void *data,
> - void (*cb)(struct clp_fh_list_entry *, void *))
> +int clp_list_pci(struct clp_req_rsp_list_pci *rrb, u32 *mdd,
> + void (*cb)(struct clp_fh_list_entry *))
> {
> u64 resume_token = 0;
> int nentries, i, rc;
> @@ -368,8 +368,12 @@ static int clp_list_pci(struct clp_req_rsp_list_pci *rrb, void *data,
> rc = clp_list_pci_req(rrb, &resume_token, &nentries);
> if (rc)
> return rc;
> + if (mdd)
> + *mdd = rrb->response.mdd;
> + if (!cb)
> + return 0;
> for (i = 0; i < nentries; i++)
> - cb(&rrb->response.fh_list[i], data);
> + cb(&rrb->response.fh_list[i]);
> } while (resume_token);
>
> return rc;
> @@ -398,7 +402,7 @@ static int clp_find_pci(struct clp_req_rsp_list_pci *rrb, u32 fid,
> return -ENODEV;
> }
>
> -static void __clp_add(struct clp_fh_list_entry *entry, void *data)
> +static void __clp_add(struct clp_fh_list_entry *entry)
> {
> struct zpci_dev *zdev;
>
>
next prev parent reply other threads:[~2021-12-09 15:47 UTC|newest]
Thread overview: 119+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-07 20:57 [PATCH 00/32] KVM: s390: enable zPCI for interpretive execution Matthew Rosato
2021-12-07 20:57 ` [PATCH 01/32] s390/sclp: detect the zPCI interpretation facility Matthew Rosato
2021-12-08 11:12 ` Christian Borntraeger
2021-12-08 14:33 ` Eric Farman
2021-12-08 13:06 ` Claudio Imbrenda
2021-12-07 20:57 ` [PATCH 02/32] s390/sclp: detect the AISII facility Matthew Rosato
2021-12-08 11:13 ` Christian Borntraeger
2021-12-08 13:07 ` Claudio Imbrenda
2021-12-07 20:57 ` [PATCH 03/32] s390/sclp: detect the AENI facility Matthew Rosato
2021-12-08 11:17 ` Christian Borntraeger
2021-12-08 13:08 ` Claudio Imbrenda
2021-12-07 20:57 ` [PATCH 04/32] s390/sclp: detect the AISI facility Matthew Rosato
2021-12-08 11:18 ` Christian Borntraeger
2021-12-08 13:09 ` Claudio Imbrenda
2021-12-07 20:57 ` [PATCH 05/32] s390/airq: pass more TPI info to airq handlers Matthew Rosato
2021-12-08 11:25 ` Christian Borntraeger
2021-12-08 13:14 ` Claudio Imbrenda
2021-12-13 14:35 ` Pierre Morel
2021-12-07 20:57 ` [PATCH 06/32] s390/airq: allow for airq structure that uses an input vector Matthew Rosato
2021-12-08 10:04 ` Thomas Huth
2021-12-08 12:59 ` Christian Borntraeger
2021-12-07 20:57 ` [PATCH 07/32] s390/pci: externalize the SIC operation controls and routine Matthew Rosato
2021-12-08 13:09 ` Christian Borntraeger
2021-12-08 13:53 ` Niklas Schnelle
2021-12-08 15:33 ` Matthew Rosato
2021-12-08 15:59 ` Niklas Schnelle
2021-12-08 16:20 ` Matthew Rosato
2021-12-08 16:41 ` Niklas Schnelle
2021-12-08 18:18 ` Niklas Schnelle
2021-12-07 20:57 ` [PATCH 08/32] s390/pci: stash associated GISA designation Matthew Rosato
2021-12-09 15:07 ` Christian Borntraeger
2021-12-10 19:01 ` Eric Farman
2021-12-13 14:59 ` Pierre Morel
2021-12-07 20:57 ` [PATCH 09/32] s390/pci: export some routines related to RPCIT processing Matthew Rosato
2021-12-09 15:20 ` Christian Borntraeger
2021-12-07 20:57 ` [PATCH 10/32] s390/pci: stash dtsm and maxstbl Matthew Rosato
2021-12-08 16:18 ` Niklas Schnelle
2021-12-09 9:13 ` Pierre Morel
2021-12-09 15:25 ` Christian Borntraeger
2021-12-07 20:57 ` [PATCH 11/32] s390/pci: add helper function to find device by handle Matthew Rosato
2021-12-09 15:28 ` Christian Borntraeger
2021-12-10 19:04 ` Eric Farman
2021-12-07 20:57 ` [PATCH 12/32] s390/pci: get SHM information from list pci Matthew Rosato
2021-12-08 12:21 ` Niklas Schnelle
2021-12-09 18:25 ` Matthew Rosato
2021-12-09 15:47 ` Christian Borntraeger [this message]
2021-12-10 8:45 ` Niklas Schnelle
2021-12-07 20:57 ` [PATCH 13/32] KVM: s390: pci: add basic kvm_zdev structure Matthew Rosato
2021-12-09 15:54 ` Christian Borntraeger
2021-12-10 19:04 ` Eric Farman
2021-12-13 15:19 ` Pierre Morel
2021-12-14 9:15 ` Pierre Morel
2021-12-17 20:26 ` Matthew Rosato
2021-12-20 17:26 ` Pierre Morel
2021-12-07 20:57 ` [PATCH 14/32] KVM: s390: pci: do initial setup for AEN interpretation Matthew Rosato
2021-12-08 7:53 ` kernel test robot
2021-12-09 19:54 ` Christian Borntraeger
2021-12-09 20:20 ` Matthew Rosato
2021-12-09 20:23 ` Christian Borntraeger
2021-12-10 8:36 ` Niklas Schnelle
2021-12-10 9:54 ` Pierre Morel
2021-12-10 10:55 ` Pierre Morel
2021-12-07 20:57 ` [PATCH 15/32] KVM: s390: pci: enable host forwarding of Adapter Event Notifications Matthew Rosato
2021-12-10 21:51 ` Eric Farman
2021-12-17 16:56 ` Christian Borntraeger
2021-12-17 17:42 ` Matthew Rosato
2021-12-07 20:57 ` [PATCH 16/32] KVM: s390: expose the guest zPCI interpretation facility Matthew Rosato
2021-12-17 15:05 ` Christian Borntraeger
2021-12-17 15:19 ` Matthew Rosato
2021-12-17 16:58 ` Christian Borntraeger
2021-12-17 17:13 ` Matthew Rosato
2021-12-07 20:57 ` [PATCH 17/32] KVM: s390: expose the guest Adapter Interruption Source ID facility Matthew Rosato
2021-12-17 15:06 ` Christian Borntraeger
2021-12-07 20:57 ` [PATCH 18/32] KVM: s390: expose guest Adapter Event Notification Interpretation facility Matthew Rosato
2021-12-07 20:57 ` [PATCH 19/32] KVM: s390: mechanism to enable guest zPCI Interpretation Matthew Rosato
2021-12-10 13:27 ` Christian Borntraeger
2021-12-10 14:21 ` Matthew Rosato
2021-12-07 20:57 ` [PATCH 20/32] KVM: s390: pci: provide routines for enabling/disabling interpretation Matthew Rosato
2021-12-08 9:44 ` Niklas Schnelle
2021-12-08 15:04 ` Matthew Rosato
2021-12-14 9:16 ` Pierre Morel
2021-12-07 20:57 ` [PATCH 21/32] KVM: s390: pci: provide routines for enabling/disabling interrupt forwarding Matthew Rosato
2021-12-08 10:58 ` kernel test robot
2021-12-14 9:26 ` Pierre Morel
2021-12-07 20:57 ` [PATCH 22/32] KVM: s390: pci: provide routines for enabling/disabling IOAT assist Matthew Rosato
2021-12-14 17:46 ` Pierre Morel
2021-12-14 18:13 ` Matthew Rosato
2021-12-07 20:57 ` [PATCH 23/32] KVM: s390: pci: handle refresh of PCI translations Matthew Rosato
2021-12-08 8:04 ` kernel test robot
2021-12-08 10:30 ` Niklas Schnelle
2021-12-08 18:04 ` Matthew Rosato
2021-12-14 16:59 ` Pierre Morel
2021-12-14 17:54 ` Matthew Rosato
2021-12-16 14:39 ` Niklas Schnelle
2021-12-16 14:51 ` Matthew Rosato
2021-12-17 9:41 ` Niklas Schnelle
2021-12-07 20:57 ` [PATCH 24/32] KVM: s390: intercept the rpcit instruction Matthew Rosato
2021-12-14 17:04 ` Pierre Morel
2021-12-14 18:00 ` Matthew Rosato
2021-12-07 20:57 ` [PATCH 25/32] vfio/pci: re-introduce CONFIG_VFIO_PCI_ZDEV Matthew Rosato
2021-12-17 16:49 ` Christian Borntraeger
2021-12-17 17:54 ` Matthew Rosato
2021-12-07 20:57 ` [PATCH 26/32] vfio-pci/zdev: wire up group notifier Matthew Rosato
2021-12-21 18:47 ` Alex Williamson
2021-12-07 20:57 ` [PATCH 27/32] vfio-pci/zdev: wire up zPCI interpretive execution support Matthew Rosato
2021-12-14 16:30 ` Pierre Morel
2021-12-21 18:48 ` Alex Williamson
2021-12-07 20:57 ` [PATCH 28/32] vfio-pci/zdev: wire up zPCI adapter interrupt forwarding support Matthew Rosato
2021-12-14 9:48 ` Pierre Morel
2021-12-07 20:57 ` [PATCH 29/32] vfio-pci/zdev: wire up zPCI IOAT assist support Matthew Rosato
2021-12-14 9:46 ` Pierre Morel
2021-12-07 20:57 ` [PATCH 30/32] vfio-pci/zdev: add DTSM to clp group capability Matthew Rosato
2021-12-14 9:58 ` Pierre Morel
2021-12-14 14:59 ` Matthew Rosato
2021-12-07 20:57 ` [PATCH 31/32] KVM: s390: introduce CPU feature for zPCI Interpretation Matthew Rosato
2021-12-07 20:57 ` [PATCH 32/32] MAINTAINERS: additional files related kvm s390 pci passthrough Matthew Rosato
2021-12-17 14:55 ` Christian Borntraeger
2021-12-21 19:11 ` Alex Williamson
2021-12-07 21:16 ` [PATCH 00/32] KVM: s390: enable zPCI for interpretive execution Matthew Rosato
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