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Tue, 7 Dec 2021 20:58:25 +0000 (GMT) From: Matthew Rosato To: 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, 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, 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: [PATCH 07/32] s390/pci: externalize the SIC operation controls and routine Date: Tue, 7 Dec 2021 15:57:18 -0500 Message-Id: <20211207205743.150299-8-mjrosato@linux.ibm.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20211207205743.150299-1-mjrosato@linux.ibm.com> References: <20211207205743.150299-1-mjrosato@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: 3EevqbKck2WgxRhHMqfdVptxIJnN3pj4 X-Proofpoint-ORIG-GUID: Yp-2eZE6TTo7e1hNNJJCKS2FSIB2a8P5 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.790,Hydra:6.0.425,FMLib:17.11.62.513 definitions=2021-12-07_08,2021-12-06_02,2021-12-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 impostorscore=0 mlxlogscore=852 lowpriorityscore=0 adultscore=0 clxscore=1015 mlxscore=0 suspectscore=0 spamscore=0 bulkscore=0 phishscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2110150000 definitions=main-2112070126 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org 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 swap the purpose of zpci_set_irq_ctrl and __zpci_set_irq_ctrl, leaving the latter as a static within pci_irq.c only for SIC calls that don't specify an iib. Signed-off-by: Matthew Rosato --- arch/s390/include/asm/pci_insn.h | 17 +++++++++-------- arch/s390/pci/pci_insn.c | 3 ++- arch/s390/pci/pci_irq.c | 28 ++++++++++++++-------------- 3 files changed, 25 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 28d863aaafea..d1a8bd43ce26 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 dfd4f3276a6d..6b29e39496d1 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 @@ -145,6 +138,13 @@ static int zpci_set_irq_affinity(struct irq_data *data, const struct cpumask *de return IRQ_SET_MASK_OK; } +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); +} + static struct irq_chip zpci_irq_chip = { .name = "PCI-MSI", .irq_unmask = pci_msi_unmask_irq, @@ -165,7 +165,7 @@ 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)) break; bit = 0; continue; @@ -203,7 +203,7 @@ 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)) break; cpu = 0; continue; @@ -247,7 +247,7 @@ 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)) break; si = 0; continue; @@ -412,8 +412,8 @@ static void __init cpu_enable_directed_irq(void *unused) 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); } static int __init zpci_directed_irq_init(void) @@ -428,7 +428,7 @@ static int __init zpci_directed_irq_init(void) iib.diib.isc = PCI_ISC; iib.diib.nr_cpus = num_possible_cpus(); iib.diib.disb_addr = (u64) 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); @@ -504,7 +504,7 @@ 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); return 0; out_airq: