diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-06-24 15:45:27 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-06-24 15:45:27 (GMT) |
commit | 4b1f2af6752a4cc9acc1c22ddf3842478965f113 (patch) | |
tree | 632e499f2a15b7d6128be11d148fcdc653813ef3 /arch/s390 | |
parent | aaa64485267c14e79382fbf7f4b0689a5de94fe9 (diff) | |
parent | 7fc611ff3ff1a0b8f5a6569fe75a97d6c70bed6c (diff) | |
download | linux-4b1f2af6752a4cc9acc1c22ddf3842478965f113.tar.xz |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Martin Schwidefsky:
"Pretty boring for a merge window pull.
One change in behaviour is the patch for dasd driver, the module which
provides the diagnose discipline is now loaded automatically.
The SCLP code got a nice cleanup, a new global structure replaces a
bunch of accessor functions.
And a couple of random, small improvements"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/pci: improve handling of hotplug event 0x301
s390/setup: fix DMA_API_DEBUG warnings
s390/zcrypt: remove obsolete __constant
s390/keyboard: avoid off-by-one when using strnlen_user()
s390/sclp: pass timeout as HZ independent value
s390/mm: s/specifiation/specification/, s/an specification/a specification/
s390/sclp: Use DECLARE_BITMAP
s390/dasd: Enable automatic loading of dasd_diag_mod
s390/sclp: move sclp_facilities into "struct sclp"
s390/sclp: get rid of sclp_get_mtid() and sclp_get_mtid_max()
s390/sclp: unify basic sclp access by exposing "struct sclp"
s390/sclp: prepare smp_fill_possible_mask for global "struct sclp"
Diffstat (limited to 'arch/s390')
-rw-r--r-- | arch/s390/hypfs/hypfs_sprp.c | 4 | ||||
-rw-r--r-- | arch/s390/include/asm/pgtable.h | 4 | ||||
-rw-r--r-- | arch/s390/include/asm/sclp.h | 34 | ||||
-rw-r--r-- | arch/s390/kernel/crash_dump.c | 8 | ||||
-rw-r--r-- | arch/s390/kernel/setup.c | 23 | ||||
-rw-r--r-- | arch/s390/kernel/smp.c | 13 | ||||
-rw-r--r-- | arch/s390/kvm/interrupt.c | 4 | ||||
-rw-r--r-- | arch/s390/kvm/kvm-s390.c | 8 | ||||
-rw-r--r-- | arch/s390/mm/init.c | 2 | ||||
-rw-r--r-- | arch/s390/mm/mem_detect.c | 4 | ||||
-rw-r--r-- | arch/s390/pci/pci_event.c | 8 |
11 files changed, 65 insertions, 47 deletions
diff --git a/arch/s390/hypfs/hypfs_sprp.c b/arch/s390/hypfs/hypfs_sprp.c index f043c3c..dd42a26 100644 --- a/arch/s390/hypfs/hypfs_sprp.c +++ b/arch/s390/hypfs/hypfs_sprp.c @@ -128,14 +128,14 @@ static struct hypfs_dbfs_file hypfs_sprp_file = { int hypfs_sprp_init(void) { - if (!sclp_has_sprp()) + if (!sclp.has_sprp) return 0; return hypfs_dbfs_create_file(&hypfs_sprp_file); } void hypfs_sprp_exit(void) { - if (!sclp_has_sprp()) + if (!sclp.has_sprp) return; hypfs_dbfs_remove_file(&hypfs_sprp_file); } diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index ef24a21..0bb2da7 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -1565,9 +1565,9 @@ static inline int has_transparent_hugepage(void) /* * 64 bit swap entry format: * A page-table entry has some bits we have to treat in a special way. - * Bits 52 and bit 55 have to be zero, otherwise an specification + * Bits 52 and bit 55 have to be zero, otherwise a specification * exception will occur instead of a page translation exception. The - * specifiation exception has the bad habit not to store necessary + * specification exception has the bad habit not to store necessary * information in the lowcore. * Bits 54 and 63 are used to indicate the page type. * A swap pte is indicated by bit pattern (pte & 0x201) == 0x200 diff --git a/arch/s390/include/asm/sclp.h b/arch/s390/include/asm/sclp.h index f1096ba..c891f41 100644 --- a/arch/s390/include/asm/sclp.h +++ b/arch/s390/include/asm/sclp.h @@ -46,33 +46,39 @@ struct sclp_cpu_info { struct sclp_cpu_entry cpu[MAX_CPU_ADDRESS + 1]; }; +struct sclp_info { + unsigned char has_linemode : 1; + unsigned char has_vt220 : 1; + unsigned char has_siif : 1; + unsigned char has_sigpif : 1; + unsigned char has_cpu_type : 1; + unsigned char has_sprp : 1; + unsigned int ibc; + unsigned int mtid; + unsigned int mtid_cp; + unsigned int mtid_prev; + unsigned long long rzm; + unsigned long long rnmax; + unsigned long long hamax; + unsigned int max_cpu; + unsigned long hsa_size; + unsigned long long facilities; +}; +extern struct sclp_info sclp; + int sclp_get_cpu_info(struct sclp_cpu_info *info); int sclp_cpu_configure(u8 cpu); int sclp_cpu_deconfigure(u8 cpu); -unsigned long long sclp_get_rnmax(void); -unsigned long long sclp_get_rzm(void); -unsigned int sclp_get_max_cpu(void); -unsigned int sclp_get_mtid(u8 cpu_type); -unsigned int sclp_get_mtid_max(void); -unsigned int sclp_get_mtid_prev(void); int sclp_sdias_blk_count(void); int sclp_sdias_copy(void *dest, int blk_num, int nr_blks); int sclp_chp_configure(struct chp_id chpid); int sclp_chp_deconfigure(struct chp_id chpid); int sclp_chp_read_info(struct sclp_chp_info *info); void sclp_get_ipl_info(struct sclp_ipl_info *info); -bool __init sclp_has_linemode(void); -bool __init sclp_has_vt220(void); -bool sclp_has_sprp(void); int sclp_pci_configure(u32 fid); int sclp_pci_deconfigure(u32 fid); int memcpy_hsa(void *dest, unsigned long src, size_t count, int mode); -unsigned long sclp_get_hsa_size(void); void sclp_early_detect(void); -int sclp_has_siif(void); -int sclp_has_sigpif(void); -unsigned int sclp_get_ibc(void); - long _sclp_print_early(const char *); #endif /* _ASM_S390_SCLP_H */ diff --git a/arch/s390/kernel/crash_dump.c b/arch/s390/kernel/crash_dump.c index 9f73c80..d9f0dcf 100644 --- a/arch/s390/kernel/crash_dump.c +++ b/arch/s390/kernel/crash_dump.c @@ -122,7 +122,7 @@ static ssize_t copy_oldmem_page_zfcpdump(char *buf, size_t csize, { int rc; - if (src < sclp_get_hsa_size()) { + if (src < sclp.hsa_size) { rc = memcpy_hsa(buf, src, csize, userbuf); } else { if (userbuf) @@ -215,7 +215,7 @@ static int remap_oldmem_pfn_range_zfcpdump(struct vm_area_struct *vma, unsigned long pfn, unsigned long size, pgprot_t prot) { - unsigned long hsa_end = sclp_get_hsa_size(); + unsigned long hsa_end = sclp.hsa_size; unsigned long size_hsa; if (pfn < hsa_end >> PAGE_SHIFT) { @@ -258,7 +258,7 @@ int copy_from_oldmem(void *dest, void *src, size_t count) return rc; } } else { - unsigned long hsa_end = sclp_get_hsa_size(); + unsigned long hsa_end = sclp.hsa_size; if ((unsigned long) src < hsa_end) { copied = min(count, hsa_end - (unsigned long) src); rc = memcpy_hsa(dest, (unsigned long) src, copied, 0); @@ -609,7 +609,7 @@ int elfcorehdr_alloc(unsigned long long *addr, unsigned long long *size) if (elfcorehdr_addr != ELFCORE_ADDR_MAX) return 0; /* If we cannot get HSA size for zfcpdump return error */ - if (ipl_info.type == IPL_TYPE_FCP_DUMP && !sclp_get_hsa_size()) + if (ipl_info.type == IPL_TYPE_FCP_DUMP && !sclp.hsa_size) return -ENODEV; /* For kdump, exclude previous crashkernel memory */ diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index 7262fe4..af4f41d 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -128,9 +128,9 @@ __setup("condev=", condev_setup); static void __init set_preferred_console(void) { if (MACHINE_IS_KVM) { - if (sclp_has_vt220()) + if (sclp.has_vt220) add_preferred_console("ttyS", 1, NULL); - else if (sclp_has_linemode()) + else if (sclp.has_linemode) add_preferred_console("ttyS", 0, NULL); else add_preferred_console("hvc", 0, NULL); @@ -510,8 +510,8 @@ static void reserve_memory_end(void) { #ifdef CONFIG_CRASH_DUMP if (ipl_info.type == IPL_TYPE_FCP_DUMP && - !OLDMEM_BASE && sclp_get_hsa_size()) { - memory_end = sclp_get_hsa_size(); + !OLDMEM_BASE && sclp.hsa_size) { + memory_end = sclp.hsa_size; memory_end &= PAGE_MASK; memory_end_set = 1; } @@ -576,7 +576,7 @@ static void __init reserve_crashkernel(void) crash_base = low; } else { /* Find suitable area in free memory */ - low = max_t(unsigned long, crash_size, sclp_get_hsa_size()); + low = max_t(unsigned long, crash_size, sclp.hsa_size); high = crash_base ? crash_base + crash_size : ULONG_MAX; if (crash_base && crash_base < low) { @@ -640,19 +640,24 @@ static void __init check_initrd(void) } /* - * Reserve all kernel text + * Reserve memory used for lowcore/command line/kernel image. */ static void __init reserve_kernel(void) { - unsigned long start_pfn; - start_pfn = PFN_UP(__pa(&_end)); + unsigned long start_pfn = PFN_UP(__pa(&_end)); +#ifdef CONFIG_DMA_API_DEBUG /* - * Reserve memory used for lowcore/command line/kernel image. + * DMA_API_DEBUG code stumbles over addresses from the + * range [_ehead, _stext]. Mark the memory as reserved + * so it is not used for CONFIG_DMA_API_DEBUG=y. */ + memblock_reserve(0, PFN_PHYS(start_pfn)); +#else memblock_reserve(0, (unsigned long)_ehead); memblock_reserve((unsigned long)_stext, PFN_PHYS(start_pfn) - (unsigned long)_stext); +#endif } static void __init reserve_elfcorehdr(void) diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index efd2c19..0d9d59d 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -601,7 +601,7 @@ static void __init smp_store_cpu_states(struct sclp_cpu_info *info) /* No previous system present, normal boot. */ return; /* Set multi-threading state to the previous system. */ - pcpu_set_smt(sclp_get_mtid_prev()); + pcpu_set_smt(sclp.mtid_prev); /* Collect CPU states. */ cpu = 0; for (i = 0; i < info->configured; i++) { @@ -740,7 +740,7 @@ static void __init smp_detect_cpus(void) #endif /* Set multi-threading state for the current system */ - mtid = sclp_get_mtid(boot_cpu_type); + mtid = boot_cpu_type ? sclp.mtid : sclp.mtid_cp; mtid = (mtid < smp_max_threads) ? mtid : smp_max_threads - 1; pcpu_set_smt(mtid); @@ -880,12 +880,13 @@ void __noreturn cpu_die(void) void __init smp_fill_possible_mask(void) { - unsigned int possible, sclp, cpu; + unsigned int possible, sclp_max, cpu; - sclp = min(smp_max_threads, sclp_get_mtid_max() + 1); - sclp = sclp_get_max_cpu()*sclp ?: nr_cpu_ids; + sclp_max = max(sclp.mtid, sclp.mtid_cp) + 1; + sclp_max = min(smp_max_threads, sclp_max); + sclp_max = sclp.max_cpu * sclp_max ?: nr_cpu_ids; possible = setup_possible_cpus ?: nr_cpu_ids; - possible = min(possible, sclp); + possible = min(possible, sclp_max); for (cpu = 0; cpu < possible && cpu < nr_cpu_ids; cpu++) set_cpu_possible(cpu, true); } diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c index 9de4726..0d3deef 100644 --- a/arch/s390/kvm/interrupt.c +++ b/arch/s390/kvm/interrupt.c @@ -799,7 +799,7 @@ int kvm_s390_ext_call_pending(struct kvm_vcpu *vcpu) struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int; uint8_t sigp_ctrl = vcpu->kvm->arch.sca->cpu[vcpu->vcpu_id].sigp_ctrl; - if (!sclp_has_sigpif()) + if (!sclp.has_sigpif) return test_bit(IRQ_PEND_EXT_EXTERNAL, &li->pending_irqs); return (sigp_ctrl & SIGP_CTRL_C) && @@ -1058,7 +1058,7 @@ static int __inject_extcall(struct kvm_vcpu *vcpu, struct kvm_s390_irq *irq) kvm_get_vcpu(vcpu->kvm, src_id) == NULL) return -EINVAL; - if (sclp_has_sigpif()) + if (sclp.has_sigpif) return __inject_extcall_sigpif(vcpu, src_id); if (!test_and_set_bit(IRQ_PEND_EXT_EXTERNAL, &li->pending_irqs)) diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 8cd8e7b..c4e81b2 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -604,7 +604,7 @@ static int kvm_s390_get_machine(struct kvm *kvm, struct kvm_device_attr *attr) goto out; } get_cpu_id((struct cpuid *) &mach->cpuid); - mach->ibc = sclp_get_ibc(); + mach->ibc = sclp.ibc; memcpy(&mach->fac_mask, kvm->arch.model.fac->mask, S390_ARCH_FAC_LIST_SIZE_BYTE); memcpy((unsigned long *)&mach->fac_list, S390_lowcore.stfle_fac_list, @@ -1068,7 +1068,7 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) S390_ARCH_FAC_LIST_SIZE_BYTE); kvm_s390_get_cpu_id(&kvm->arch.model.cpu_id); - kvm->arch.model.ibc = sclp_get_ibc() & 0x0fff; + kvm->arch.model.ibc = sclp.ibc & 0x0fff; if (kvm_s390_crypto_init(kvm) < 0) goto out_err; @@ -1321,9 +1321,9 @@ int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu) vcpu->arch.sie_block->ecb2 = 8; vcpu->arch.sie_block->eca = 0xC1002000U; - if (sclp_has_siif()) + if (sclp.has_siif) vcpu->arch.sie_block->eca |= 1; - if (sclp_has_sigpif()) + if (sclp.has_sigpif) vcpu->arch.sie_block->eca |= 0x10000000U; if (test_kvm_facility(vcpu->kvm, 129)) { vcpu->arch.sie_block->eca |= 0x00020000; diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c index 80875c4..76e8737 100644 --- a/arch/s390/mm/init.c +++ b/arch/s390/mm/init.c @@ -213,7 +213,7 @@ unsigned long memory_block_size_bytes(void) * Make sure the memory block size is always greater * or equal than the memory increment size. */ - return max_t(unsigned long, MIN_MEMORY_BLOCK_SIZE, sclp_get_rzm()); + return max_t(unsigned long, MIN_MEMORY_BLOCK_SIZE, sclp.rzm); } #ifdef CONFIG_MEMORY_HOTREMOVE diff --git a/arch/s390/mm/mem_detect.c b/arch/s390/mm/mem_detect.c index 0f36043..e00f0d5 100644 --- a/arch/s390/mm/mem_detect.c +++ b/arch/s390/mm/mem_detect.c @@ -31,8 +31,8 @@ void __init detect_memory_memblock(void) unsigned long addr, size; int type; - rzm = sclp_get_rzm(); - rnmax = sclp_get_rnmax(); + rzm = sclp.rzm; + rnmax = sclp.rnmax; memsize = rzm * rnmax; if (!rzm) rzm = 1ULL << 17; diff --git a/arch/s390/pci/pci_event.c b/arch/s390/pci/pci_event.c index 460fdb2..ed2394d 100644 --- a/arch/s390/pci/pci_event.c +++ b/arch/s390/pci/pci_event.c @@ -75,7 +75,13 @@ static void __zpci_event_availability(struct zpci_ccdf_avail *ccdf) zpci_err_hex(ccdf, sizeof(*ccdf)); switch (ccdf->pec) { - case 0x0301: /* Standby -> Configured */ + case 0x0301: /* Reserved|Standby -> Configured */ + if (!zdev) { + ret = clp_add_pci_device(ccdf->fid, ccdf->fh, 0); + if (ret) + break; + zdev = get_zdev_by_fid(ccdf->fid); + } if (!zdev || zdev->state != ZPCI_FN_STATE_STANDBY) break; zdev->state = ZPCI_FN_STATE_CONFIGURED; |