From: Claudio Imbrenda <imbrenda@linux.ibm.com>
To: Matthew Rosato <mjrosato@linux.ibm.com>
Cc: linux-s390@vger.kernel.org, alex.williamson@redhat.com,
cohuck@redhat.com, schnelle@linux.ibm.com, farman@linux.ibm.com,
pmorel@linux.ibm.com, borntraeger@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, 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 v2 07/30] s390/pci: externalize the SIC operation controls and routine
Date: Wed, 26 Jan 2022 11:07:26 +0100 [thread overview]
Message-ID: <20220126110726.5f7e82f6@p-imbrenda> (raw)
In-Reply-To: <20220114203145.242984-8-mjrosato@linux.ibm.com>
On Fri, 14 Jan 2022 15:31:22 -0500
Matthew Rosato <mjrosato@linux.ibm.com> wrote:
> A subsequent patch will be issuing SIC from KVM -- export the necessary
> routine and make the operation control definitions available from a header.
> Because the routine will now be exported, let's rename __zpci_set_irq_ctrl
> to zpci_set_irq_ctrl and get rid of the zero'd iib wrapper function of
> the same name.
>
> Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
> ---
> arch/s390/include/asm/pci_insn.h | 17 +++++++++--------
> arch/s390/pci/pci_insn.c | 3 ++-
> arch/s390/pci/pci_irq.c | 26 ++++++++++++--------------
> 3 files changed, 23 insertions(+), 23 deletions(-)
>
> diff --git a/arch/s390/include/asm/pci_insn.h b/arch/s390/include/asm/pci_insn.h
> index 61cf9531f68f..5331082fa516 100644
> --- a/arch/s390/include/asm/pci_insn.h
> +++ b/arch/s390/include/asm/pci_insn.h
> @@ -98,6 +98,14 @@ struct zpci_fib {
> u32 gd;
> } __packed __aligned(8);
>
> +/* Set Interruption Controls Operation Controls */
> +#define SIC_IRQ_MODE_ALL 0
> +#define SIC_IRQ_MODE_SINGLE 1
> +#define SIC_IRQ_MODE_DIRECT 4
> +#define SIC_IRQ_MODE_D_ALL 16
> +#define SIC_IRQ_MODE_D_SINGLE 17
> +#define SIC_IRQ_MODE_SET_CPU 18
> +
> /* directed interruption information block */
> struct zpci_diib {
> u32 : 1;
> @@ -134,13 +142,6 @@ int __zpci_store(u64 data, u64 req, u64 offset);
> int zpci_store(const volatile void __iomem *addr, u64 data, unsigned long len);
> int __zpci_store_block(const u64 *data, u64 req, u64 offset);
> void zpci_barrier(void);
> -int __zpci_set_irq_ctrl(u16 ctl, u8 isc, union zpci_sic_iib *iib);
> -
> -static inline int zpci_set_irq_ctrl(u16 ctl, u8 isc)
> -{
> - union zpci_sic_iib iib = {{0}};
> -
> - return __zpci_set_irq_ctrl(ctl, isc, &iib);
> -}
> +int zpci_set_irq_ctrl(u16 ctl, u8 isc, union zpci_sic_iib *iib);
>
> #endif
> diff --git a/arch/s390/pci/pci_insn.c b/arch/s390/pci/pci_insn.c
> index 4dd58b196cea..2a47b3936e44 100644
> --- a/arch/s390/pci/pci_insn.c
> +++ b/arch/s390/pci/pci_insn.c
> @@ -97,7 +97,7 @@ int zpci_refresh_trans(u64 fn, u64 addr, u64 range)
> }
>
> /* Set Interruption Controls */
> -int __zpci_set_irq_ctrl(u16 ctl, u8 isc, union zpci_sic_iib *iib)
> +int zpci_set_irq_ctrl(u16 ctl, u8 isc, union zpci_sic_iib *iib)
> {
> if (!test_facility(72))
> return -EIO;
> @@ -108,6 +108,7 @@ int __zpci_set_irq_ctrl(u16 ctl, u8 isc, union zpci_sic_iib *iib)
>
> return 0;
> }
> +EXPORT_SYMBOL_GPL(zpci_set_irq_ctrl);
>
> /* PCI Load */
> static inline int ____pcilg(u64 *data, u64 req, u64 offset, u8 *status)
> diff --git a/arch/s390/pci/pci_irq.c b/arch/s390/pci/pci_irq.c
> index 0d0a02a9fbbf..2f675355fd0c 100644
> --- a/arch/s390/pci/pci_irq.c
> +++ b/arch/s390/pci/pci_irq.c
> @@ -15,13 +15,6 @@
>
> static enum {FLOATING, DIRECTED} irq_delivery;
>
> -#define SIC_IRQ_MODE_ALL 0
> -#define SIC_IRQ_MODE_SINGLE 1
> -#define SIC_IRQ_MODE_DIRECT 4
> -#define SIC_IRQ_MODE_D_ALL 16
> -#define SIC_IRQ_MODE_D_SINGLE 17
> -#define SIC_IRQ_MODE_SET_CPU 18
> -
> /*
> * summary bit vector
> * FLOATING - summary bit per function
> @@ -154,6 +147,7 @@ static struct irq_chip zpci_irq_chip = {
> static void zpci_handle_cpu_local_irq(bool rescan)
> {
> struct airq_iv *dibv = zpci_ibv[smp_processor_id()];
> + union zpci_sic_iib iib = {{0}};
> unsigned long bit;
> int irqs_on = 0;
>
> @@ -165,7 +159,7 @@ static void zpci_handle_cpu_local_irq(bool rescan)
> /* End of second scan with interrupts on. */
> break;
> /* First scan complete, reenable interrupts. */
> - if (zpci_set_irq_ctrl(SIC_IRQ_MODE_D_SINGLE, PCI_ISC))
> + if (zpci_set_irq_ctrl(SIC_IRQ_MODE_D_SINGLE, PCI_ISC, &iib))
> break;
> bit = 0;
> continue;
> @@ -193,6 +187,7 @@ static void zpci_handle_remote_irq(void *data)
> static void zpci_handle_fallback_irq(void)
> {
> struct cpu_irq_data *cpu_data;
> + union zpci_sic_iib iib = {{0}};
> unsigned long cpu;
> int irqs_on = 0;
>
> @@ -203,7 +198,7 @@ static void zpci_handle_fallback_irq(void)
> /* End of second scan with interrupts on. */
> break;
> /* First scan complete, reenable interrupts. */
> - if (zpci_set_irq_ctrl(SIC_IRQ_MODE_SINGLE, PCI_ISC))
> + if (zpci_set_irq_ctrl(SIC_IRQ_MODE_SINGLE, PCI_ISC, &iib))
> break;
> cpu = 0;
> continue;
> @@ -234,6 +229,7 @@ static void zpci_directed_irq_handler(struct airq_struct *airq,
> static void zpci_floating_irq_handler(struct airq_struct *airq,
> struct tpi_info *tpi_info)
> {
> + union zpci_sic_iib iib = {{0}};
> unsigned long si, ai;
> struct airq_iv *aibv;
> int irqs_on = 0;
> @@ -247,7 +243,7 @@ static void zpci_floating_irq_handler(struct airq_struct *airq,
> /* End of second scan with interrupts on. */
> break;
> /* First scan complete, reenable interrupts. */
> - if (zpci_set_irq_ctrl(SIC_IRQ_MODE_SINGLE, PCI_ISC))
> + if (zpci_set_irq_ctrl(SIC_IRQ_MODE_SINGLE, PCI_ISC, &iib))
> break;
> si = 0;
> continue;
> @@ -407,11 +403,12 @@ static struct airq_struct zpci_airq = {
> static void __init cpu_enable_directed_irq(void *unused)
> {
> union zpci_sic_iib iib = {{0}};
> + union zpci_sic_iib ziib = {{0}};
>
> iib.cdiib.dibv_addr = (u64) zpci_ibv[smp_processor_id()]->vector;
>
> - __zpci_set_irq_ctrl(SIC_IRQ_MODE_SET_CPU, 0, &iib);
> - zpci_set_irq_ctrl(SIC_IRQ_MODE_D_SINGLE, PCI_ISC);
> + zpci_set_irq_ctrl(SIC_IRQ_MODE_SET_CPU, 0, &iib);
> + zpci_set_irq_ctrl(SIC_IRQ_MODE_D_SINGLE, PCI_ISC, &ziib);
> }
>
> static int __init zpci_directed_irq_init(void)
> @@ -426,7 +423,7 @@ static int __init zpci_directed_irq_init(void)
> iib.diib.isc = PCI_ISC;
> iib.diib.nr_cpus = num_possible_cpus();
> iib.diib.disb_addr = virt_to_phys(zpci_sbv->vector);
> - __zpci_set_irq_ctrl(SIC_IRQ_MODE_DIRECT, 0, &iib);
> + zpci_set_irq_ctrl(SIC_IRQ_MODE_DIRECT, 0, &iib);
>
> zpci_ibv = kcalloc(num_possible_cpus(), sizeof(*zpci_ibv),
> GFP_KERNEL);
> @@ -471,6 +468,7 @@ static int __init zpci_floating_irq_init(void)
>
> int __init zpci_irq_init(void)
> {
> + union zpci_sic_iib iib = {{0}};
> int rc;
>
> irq_delivery = sclp.has_dirq ? DIRECTED : FLOATING;
> @@ -502,7 +500,7 @@ int __init zpci_irq_init(void)
> * Enable floating IRQs (with suppression after one IRQ). When using
> * directed IRQs this enables the fallback path.
> */
> - zpci_set_irq_ctrl(SIC_IRQ_MODE_SINGLE, PCI_ISC);
> + zpci_set_irq_ctrl(SIC_IRQ_MODE_SINGLE, PCI_ISC, &iib);
>
> return 0;
> out_airq:
next prev parent reply other threads:[~2022-01-26 10:07 UTC|newest]
Thread overview: 97+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-14 20:31 [PATCH v2 00/30] KVM: s390: enable zPCI for interpretive execution Matthew Rosato
2022-01-14 20:31 ` [PATCH v2 01/30] s390/sclp: detect the zPCI load/store interpretation facility Matthew Rosato
2022-01-14 20:31 ` [PATCH v2 02/30] s390/sclp: detect the AISII facility Matthew Rosato
2022-01-14 20:31 ` [PATCH v2 03/30] s390/sclp: detect the AENI facility Matthew Rosato
2022-01-14 20:31 ` [PATCH v2 04/30] s390/sclp: detect the AISI facility Matthew Rosato
2022-01-17 7:57 ` Thomas Huth
2022-01-14 20:31 ` [PATCH v2 05/30] s390/airq: pass more TPI info to airq handlers Matthew Rosato
2022-01-17 8:27 ` Thomas Huth
2022-01-14 20:31 ` [PATCH v2 06/30] s390/airq: allow for airq structure that uses an input vector Matthew Rosato
2022-01-17 12:29 ` Claudio Imbrenda
2022-01-18 18:52 ` Matthew Rosato
2022-01-18 9:50 ` Pierre Morel
2022-01-14 20:31 ` [PATCH v2 07/30] s390/pci: externalize the SIC operation controls and routine Matthew Rosato
2022-01-17 16:19 ` Niklas Schnelle
2022-01-26 10:07 ` Claudio Imbrenda [this message]
2022-01-27 9:57 ` Pierre Morel
2022-01-14 20:31 ` [PATCH v2 08/30] s390/pci: stash associated GISA designation Matthew Rosato
2022-01-24 14:08 ` Pierre Morel
2022-01-24 15:12 ` Matthew Rosato
2022-01-14 20:31 ` [PATCH v2 09/30] s390/pci: export some routines related to RPCIT processing Matthew Rosato
2022-01-18 9:51 ` Pierre Morel
2022-01-14 20:31 ` [PATCH v2 10/30] s390/pci: stash dtsm and maxstbl Matthew Rosato
2022-01-14 20:31 ` [PATCH v2 11/30] s390/pci: add helper function to find device by handle Matthew Rosato
2022-01-18 9:53 ` Pierre Morel
2022-01-14 20:31 ` [PATCH v2 12/30] s390/pci: get SHM information from list pci Matthew Rosato
2022-01-18 10:36 ` Pierre Morel
2022-01-26 10:13 ` Claudio Imbrenda
2022-01-27 13:41 ` Pierre Morel
2022-01-27 15:14 ` Matthew Rosato
2022-01-27 10:29 ` Niklas Schnelle
2022-01-14 20:31 ` [PATCH v2 13/30] s390/pci: return status from zpci_refresh_trans Matthew Rosato
2022-01-19 18:13 ` Pierre Morel
2022-01-26 10:45 ` Claudio Imbrenda
2022-01-27 10:30 ` Niklas Schnelle
2022-01-14 20:31 ` [PATCH v2 14/30] KVM: s390: pci: add basic kvm_zdev structure Matthew Rosato
2022-01-17 16:25 ` Pierre Morel
2022-01-18 17:32 ` Pierre Morel
2022-01-18 18:39 ` Matthew Rosato
2022-01-14 20:31 ` [PATCH v2 15/30] KVM: s390: pci: do initial setup for AEN interpretation Matthew Rosato
2022-01-19 18:06 ` Pierre Morel
2022-01-19 20:19 ` Matthew Rosato
2022-01-25 12:23 ` Pierre Morel
2022-01-25 14:57 ` Matthew Rosato
2022-01-14 20:31 ` [PATCH v2 16/30] KVM: s390: pci: enable host forwarding of Adapter Event Notifications Matthew Rosato
2022-01-17 17:38 ` Pierre Morel
2022-01-18 17:25 ` Matthew Rosato
2022-01-14 20:31 ` [PATCH v2 17/30] KVM: s390: mechanism to enable guest zPCI Interpretation Matthew Rosato
2022-01-24 14:24 ` Pierre Morel
2022-01-24 15:28 ` Matthew Rosato
2022-01-24 17:15 ` Pierre Morel
2022-01-14 20:31 ` [PATCH v2 18/30] KVM: s390: pci: provide routines for enabling/disabling interpretation Matthew Rosato
2022-01-24 14:36 ` Pierre Morel
2022-01-24 15:14 ` Matthew Rosato
2022-01-14 20:31 ` [PATCH v2 19/30] KVM: s390: pci: provide routines for enabling/disabling interrupt forwarding Matthew Rosato
2022-01-25 12:41 ` Pierre Morel
2022-01-25 15:44 ` Matthew Rosato
2022-01-14 20:31 ` [PATCH v2 20/30] KVM: s390: pci: provide routines for enabling/disabling IOAT assist Matthew Rosato
2022-01-25 13:29 ` Pierre Morel
2022-01-25 14:47 ` Matthew Rosato
2022-01-26 8:30 ` Pierre Morel
2022-01-14 20:31 ` [PATCH v2 21/30] KVM: s390: pci: handle refresh of PCI translations Matthew Rosato
2022-01-19 9:29 ` Pierre Morel
2022-01-19 16:39 ` Matthew Rosato
2022-01-19 18:25 ` Pierre Morel
2022-01-19 20:02 ` Matthew Rosato
2022-01-20 9:47 ` Pierre Morel
2022-01-14 20:31 ` [PATCH v2 22/30] KVM: s390: intercept the rpcit instruction Matthew Rosato
2022-01-18 11:05 ` Pierre Morel
2022-01-18 17:27 ` Matthew Rosato
2022-01-18 17:54 ` Pierre Morel
2022-01-19 14:06 ` Pierre Morel
2022-01-14 20:31 ` [PATCH v2 23/30] vfio/pci: re-introduce CONFIG_VFIO_PCI_ZDEV Matthew Rosato
2022-01-18 17:20 ` Pierre Morel
2022-01-18 17:32 ` Matthew Rosato
2022-01-18 17:45 ` Pierre Morel
2022-01-18 18:05 ` Matthew Rosato
2022-01-14 20:31 ` [PATCH v2 24/30] vfio-pci/zdev: wire up group notifier Matthew Rosato
2022-01-18 17:34 ` Pierre Morel
2022-01-18 18:37 ` Matthew Rosato
2022-01-14 20:31 ` [PATCH v2 25/30] vfio-pci/zdev: wire up zPCI interpretive execution support Matthew Rosato
2022-01-25 13:01 ` Pierre Morel
2022-01-25 14:21 ` Matthew Rosato
2022-01-14 20:31 ` [PATCH v2 26/30] vfio-pci/zdev: wire up zPCI adapter interrupt forwarding support Matthew Rosato
2022-01-19 17:10 ` Pierre Morel
2022-01-19 17:20 ` Matthew Rosato
2022-01-25 12:36 ` Pierre Morel
2022-01-25 14:16 ` Matthew Rosato
2022-01-26 8:24 ` Pierre Morel
2022-01-14 20:31 ` [PATCH v2 27/30] vfio-pci/zdev: wire up zPCI IOAT assist support Matthew Rosato
2022-01-19 14:03 ` Pierre Morel
2022-01-14 20:31 ` [PATCH v2 28/30] vfio-pci/zdev: add DTSM to clp group capability Matthew Rosato
2022-01-19 13:48 ` Pierre Morel
2022-01-14 20:31 ` [PATCH v2 29/30] KVM: s390: introduce CPU feature for zPCI Interpretation Matthew Rosato
2022-01-19 13:39 ` Pierre Morel
2022-01-14 20:31 ` [PATCH v2 30/30] MAINTAINERS: additional files related kvm s390 pci passthrough Matthew Rosato
2022-01-14 20:49 ` [PATCH v2 00/30] KVM: s390: enable zPCI for interpretive execution Matthew Rosato
2022-01-19 18:10 ` Pierre Morel
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