diff options
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/boot/Makefile | 4 | ||||
| -rw-r--r-- | arch/s390/include/asm/ctl_reg.h | 2 | ||||
| -rw-r--r-- | arch/s390/include/asm/eadm.h | 13 | ||||
| -rw-r--r-- | arch/s390/include/asm/pci.h | 6 | ||||
| -rw-r--r-- | arch/s390/include/asm/sclp.h | 3 | ||||
| -rw-r--r-- | arch/s390/include/asm/setup.h | 3 | ||||
| -rw-r--r-- | arch/s390/kernel/crash_dump.c | 22 | ||||
| -rw-r--r-- | arch/s390/kernel/early.c | 2 | ||||
| -rw-r--r-- | arch/s390/kernel/setup.c | 7 | ||||
| -rw-r--r-- | arch/s390/pci/pci.c | 202 | ||||
| -rw-r--r-- | arch/s390/pci/pci_clp.c | 8 | ||||
| -rw-r--r-- | arch/s390/pci/pci_event.c | 79 |
12 files changed, 197 insertions, 154 deletions
diff --git a/arch/s390/boot/Makefile b/arch/s390/boot/Makefile index f2737a005af..9a42ecec564 100644 --- a/arch/s390/boot/Makefile +++ b/arch/s390/boot/Makefile @@ -21,6 +21,6 @@ $(obj)/bzImage: $(obj)/compressed/vmlinux FORCE $(obj)/compressed/vmlinux: FORCE $(Q)$(MAKE) $(build)=$(obj)/compressed $@ -install: $(CONFIGURE) $(obj)/image - sh -x $(srctree)/$(obj)/install.sh $(KERNELRELEASE) $(obj)/image \ +install: $(CONFIGURE) $(obj)/bzImage + sh -x $(srctree)/$(obj)/install.sh $(KERNELRELEASE) $(obj)/bzImage \ System.map "$(INSTALL_PATH)" diff --git a/arch/s390/include/asm/ctl_reg.h b/arch/s390/include/asm/ctl_reg.h index 9b69c0befdc..4e63f1a1360 100644 --- a/arch/s390/include/asm/ctl_reg.h +++ b/arch/s390/include/asm/ctl_reg.h @@ -7,6 +7,8 @@ #ifndef __ASM_CTL_REG_H #define __ASM_CTL_REG_H +#include <linux/bug.h> + #ifdef CONFIG_64BIT # define __CTL_LOAD "lctlg" # define __CTL_STORE "stctg" diff --git a/arch/s390/include/asm/eadm.h b/arch/s390/include/asm/eadm.h index dc9200ca32e..67026300c88 100644 --- a/arch/s390/include/asm/eadm.h +++ b/arch/s390/include/asm/eadm.h @@ -111,18 +111,7 @@ struct scm_driver { int scm_driver_register(struct scm_driver *scmdrv); void scm_driver_unregister(struct scm_driver *scmdrv); -int scm_start_aob(struct aob *aob); +int eadm_start_aob(struct aob *aob); void scm_irq_handler(struct aob *aob, int error); -struct eadm_ops { - int (*eadm_start) (struct aob *aob); - struct module *owner; -}; - -int scm_get_ref(void); -void scm_put_ref(void); - -void register_eadm_ops(struct eadm_ops *ops); -void unregister_eadm_ops(struct eadm_ops *ops); - #endif /* _ASM_S390_EADM_H */ diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h index 1cc185da9d3..c129ab2ac73 100644 --- a/arch/s390/include/asm/pci.h +++ b/arch/s390/include/asm/pci.h @@ -63,9 +63,10 @@ enum zpci_state { }; struct zpci_bar_struct { + struct resource *res; /* bus resource */ u32 val; /* bar start & 3 flag bits */ - u8 size; /* order 2 exponent */ u16 map_idx; /* index into bar mapping array */ + u8 size; /* order 2 exponent */ }; /* Private data per function */ @@ -97,6 +98,7 @@ struct zpci_dev { unsigned long iommu_pages; unsigned int next_bit; + char res_name[16]; struct zpci_bar_struct bars[PCI_BAR_COUNT]; u64 start_dma; /* Start of available DMA addresses */ @@ -122,12 +124,10 @@ static inline bool zdev_enabled(struct zpci_dev *zdev) Prototypes ----------------------------------------------------------------------------- */ /* Base stuff */ -struct zpci_dev *zpci_alloc_device(void); int zpci_create_device(struct zpci_dev *); int zpci_enable_device(struct zpci_dev *); int zpci_disable_device(struct zpci_dev *); void zpci_stop_device(struct zpci_dev *); -void zpci_free_device(struct zpci_dev *); int zpci_register_ioat(struct zpci_dev *, u8, u64, u64, u64); int zpci_unregister_ioat(struct zpci_dev *, u8); diff --git a/arch/s390/include/asm/sclp.h b/arch/s390/include/asm/sclp.h index 7dc7f9c63b6..30ef748bc16 100644 --- a/arch/s390/include/asm/sclp.h +++ b/arch/s390/include/asm/sclp.h @@ -43,7 +43,6 @@ struct sclp_cpu_info { int sclp_get_cpu_info(struct sclp_cpu_info *info); int sclp_cpu_configure(u8 cpu); int sclp_cpu_deconfigure(u8 cpu); -void sclp_facilities_detect(void); unsigned long long sclp_get_rnmax(void); unsigned long long sclp_get_rzm(void); int sclp_sdias_blk_count(void); @@ -57,5 +56,7 @@ bool sclp_has_vt220(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); #endif /* _ASM_S390_SCLP_H */ diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h index df802ee14af..94cfbe442f1 100644 --- a/arch/s390/include/asm/setup.h +++ b/arch/s390/include/asm/setup.h @@ -107,9 +107,6 @@ void create_mem_hole(struct mem_chunk mem_chunk[], unsigned long addr, #define MACHINE_HAS_RRBM (S390_lowcore.machine_flags & MACHINE_FLAG_RRBM) #endif /* CONFIG_64BIT */ -#define ZFCPDUMP_HSA_SIZE (32UL<<20) -#define ZFCPDUMP_HSA_SIZE_MAX (64UL<<20) - /* * Console mode. Override with conmode= */ diff --git a/arch/s390/kernel/crash_dump.c b/arch/s390/kernel/crash_dump.c index f45b2ab0cb8..d7658c4b2ed 100644 --- a/arch/s390/kernel/crash_dump.c +++ b/arch/s390/kernel/crash_dump.c @@ -95,7 +95,7 @@ static void *elfcorehdr_newmem; /* * Copy one page from zfcpdump "oldmem" * - * For pages below ZFCPDUMP_HSA_SIZE memory from the HSA is copied. Otherwise + * For pages below HSA size memory from the HSA is copied. Otherwise * real memory copy is used. */ static ssize_t copy_oldmem_page_zfcpdump(char *buf, size_t csize, @@ -103,7 +103,7 @@ static ssize_t copy_oldmem_page_zfcpdump(char *buf, size_t csize, { int rc; - if (src < ZFCPDUMP_HSA_SIZE) { + if (src < sclp_get_hsa_size()) { rc = memcpy_hsa(buf, src, csize, userbuf); } else { if (userbuf) @@ -188,18 +188,19 @@ static int remap_oldmem_pfn_range_kdump(struct vm_area_struct *vma, /* * Remap "oldmem" for zfcpdump * - * We only map available memory above ZFCPDUMP_HSA_SIZE. Memory below - * ZFCPDUMP_HSA_SIZE is read on demand using the copy_oldmem_page() function. + * We only map available memory above HSA size. Memory below HSA size + * is read on demand using the copy_oldmem_page() function. */ static int remap_oldmem_pfn_range_zfcpdump(struct vm_area_struct *vma, unsigned long from, unsigned long pfn, unsigned long size, pgprot_t prot) { + unsigned long hsa_end = sclp_get_hsa_size(); unsigned long size_hsa; - if (pfn < ZFCPDUMP_HSA_SIZE >> PAGE_SHIFT) { - size_hsa = min(size, ZFCPDUMP_HSA_SIZE - (pfn << PAGE_SHIFT)); + if (pfn < hsa_end >> PAGE_SHIFT) { + size_hsa = min(size, hsa_end - (pfn << PAGE_SHIFT)); if (size == size_hsa) return 0; size -= size_hsa; @@ -238,9 +239,9 @@ int copy_from_oldmem(void *dest, void *src, size_t count) return rc; } } else { - if ((unsigned long) src < ZFCPDUMP_HSA_SIZE) { - copied = min(count, - ZFCPDUMP_HSA_SIZE - (unsigned long) src); + unsigned long hsa_end = sclp_get_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); if (rc) return rc; @@ -580,6 +581,9 @@ int elfcorehdr_alloc(unsigned long long *addr, unsigned long long *size) /* If elfcorehdr= has been passed via cmdline, we use that one */ 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()) + return -ENODEV; mem_chunk_cnt = get_mem_chunk_cnt(); alloc_size = 0x1000 + get_cpu_cnt() * 0x300 + diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c index 96543ac400a..fca20b5fe79 100644 --- a/arch/s390/kernel/early.c +++ b/arch/s390/kernel/early.c @@ -483,7 +483,7 @@ void __init startup_init(void) detect_diag44(); detect_machine_facilities(); setup_topology(); - sclp_facilities_detect(); + sclp_early_detect(); #ifdef CONFIG_DYNAMIC_FTRACE S390_lowcore.ftrace_func = (unsigned long)ftrace_caller; #endif diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index ffe1c53264a..4444875266e 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -471,8 +471,9 @@ static void __init setup_memory_end(void) #ifdef CONFIG_ZFCPDUMP - if (ipl_info.type == IPL_TYPE_FCP_DUMP && !OLDMEM_BASE) { - memory_end = ZFCPDUMP_HSA_SIZE; + if (ipl_info.type == IPL_TYPE_FCP_DUMP && + !OLDMEM_BASE && sclp_get_hsa_size()) { + memory_end = sclp_get_hsa_size(); memory_end_set = 1; } #endif @@ -586,7 +587,7 @@ static unsigned long __init find_crash_base(unsigned long crash_size, crash_base = (chunk->addr + chunk->size) - crash_size; if (crash_base < crash_size) continue; - if (crash_base < ZFCPDUMP_HSA_SIZE_MAX) + if (crash_base < sclp_get_hsa_size()) continue; if (crash_base < (unsigned long) INITRD_START + INITRD_SIZE) continue; diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c index 0c9a17780e4..bf7c73d71ee 100644 --- a/arch/s390/pci/pci.c +++ b/arch/s390/pci/pci.c @@ -530,20 +530,6 @@ static void zpci_unmap_resources(struct zpci_dev *zdev) } } -struct zpci_dev *zpci_alloc_device(void) -{ - struct zpci_dev *zdev; - - /* Alloc memory for our private pci device data */ - zdev = kzalloc(sizeof(*zdev), GFP_KERNEL); - return zdev ? : ERR_PTR(-ENOMEM); -} - -void zpci_free_device(struct zpci_dev *zdev) -{ - kfree(zdev); -} - int pcibios_add_platform_entries(struct pci_dev *pdev) { return zpci_sysfs_add_device(&pdev->dev); @@ -579,37 +565,6 @@ static void zpci_irq_exit(void) unregister_adapter_interrupt(&zpci_airq); } -static struct resource *zpci_alloc_bus_resource(unsigned long start, unsigned long size, - unsigned long flags, int domain) -{ - struct resource *r; - char *name; - int rc; - - r = kzalloc(sizeof(*r), GFP_KERNEL); - if (!r) - return ERR_PTR(-ENOMEM); - r->start = start; - r->end = r->start + size - 1; - r->flags = flags; - r->parent = &iomem_resource; - name = kmalloc(18, GFP_KERNEL); - if (!name) { - kfree(r); - return ERR_PTR(-ENOMEM); - } - sprintf(name, "PCI Bus: %04x:%02x", domain, ZPCI_BUS_NR); - r->name = name; - - rc = request_resource(&iomem_resource, r); - if (rc) { - kfree(r->name); - kfree(r); - return ERR_PTR(-ENOMEM); - } - return r; -} - static int zpci_alloc_iomap(struct zpci_dev *zdev) { int entry; @@ -633,6 +588,82 @@ static void zpci_free_iomap(struct zpci_dev *zdev, int entry) spin_unlock(&zpci_iomap_lock); } +static struct resource *__alloc_res(struct zpci_dev *zdev, unsigned long start, + unsigned long size, unsigned long flags) +{ + struct resource *r; + + r = kzalloc(sizeof(*r), GFP_KERNEL); + if (!r) + return NULL; + + r->start = start; + r->end = r->start + size - 1; + r->flags = flags; + r->name = zdev->res_name; + + if (request_resource(&iomem_resource, r)) { + kfree(r); + return NULL; + } + return r; +} + +static int zpci_setup_bus_resources(struct zpci_dev *zdev, + struct list_head *resources) +{ + unsigned long addr, size, flags; + struct resource *res; + int i, entry; + + snprintf(zdev->res_name, sizeof(zdev->res_name), + "PCI Bus %04x:%02x", zdev->domain, ZPCI_BUS_NR); + + for (i = 0; i < PCI_BAR_COUNT; i++) { + if (!zdev->bars[i].size) + continue; + entry = zpci_alloc_iomap(zdev); + if (entry < 0) + return entry; + zdev->bars[i].map_idx = entry; + + /* only MMIO is supported */ + flags = IORESOURCE_MEM; + if (zdev->bars[i].val & 8) + flags |= IORESOURCE_PREFETCH; + if (zdev->bars[i].val & 4) + flags |= IORESOURCE_MEM_64; + + addr = ZPCI_IOMAP_ADDR_BASE + ((u64) entry << 48); + + size = 1UL << zdev->bars[i].size; + + res = __alloc_res(zdev, addr, size, flags); + if (!res) { + zpci_free_iomap(zdev, entry); + return -ENOMEM; + } + zdev->bars[i].res = res; + pci_add_resource(resources, res); + } + + return 0; +} + +static void zpci_cleanup_bus_resources(struct zpci_dev *zdev) +{ + int i; + + for (i = 0; i < PCI_BAR_COUNT; i++) { + if (!zdev->bars[i].size) + continue; + + zpci_free_iomap(zdev, zdev->bars[i].map_idx); + release_resource(zdev->bars[i].res); + kfree(zdev->bars[i].res); + } +} + int pcibios_add_device(struct pci_dev *pdev) { struct zpci_dev *zdev = get_zdev(pdev); @@ -729,52 +760,6 @@ struct dev_pm_ops pcibios_pm_ops = { }; #endif /* CONFIG_HIBERNATE_CALLBACKS */ -static int zpci_scan_bus(struct zpci_dev *zdev) -{ - struct resource *res; - LIST_HEAD(resources); - int i; - - /* allocate mapping entry for each used bar */ - for (i = 0; i < PCI_BAR_COUNT; i++) { - unsigned long addr, size, flags; - int entry; - - if (!zdev->bars[i].size) - continue; - entry = zpci_alloc_iomap(zdev); - if (entry < 0) - return entry; - zdev->bars[i].map_idx = entry; - - /* only MMIO is supported */ - flags = IORESOURCE_MEM; - if (zdev->bars[i].val & 8) - flags |= IORESOURCE_PREFETCH; - if (zdev->bars[i].val & 4) - flags |= IORESOURCE_MEM_64; - - addr = ZPCI_IOMAP_ADDR_BASE + ((u64) entry << 48); - - size = 1UL << zdev->bars[i].size; - - res = zpci_alloc_bus_resource(addr, size, flags, zdev->domain); - if (IS_ERR(res)) { - zpci_free_iomap(zdev, entry); - return PTR_ERR(res); - } - pci_add_resource(&resources, res); - } - - zdev->bus = pci_scan_root_bus(NULL, ZPCI_BUS_NR, &pci_root_ops, - zdev, &resources); - if (!zdev->bus) - return -EIO; - - zdev->bus->max_bus_speed = zdev->max_bus_speed; - return 0; -} - static int zpci_alloc_domain(struct zpci_dev *zdev) { spin_lock(&zpci_domain_lock); @@ -795,6 +780,41 @@ static void zpci_free_domain(struct zpci_dev *zdev) spin_unlock(&zpci_domain_lock); } +void pcibios_remove_bus(struct pci_bus *bus) +{ + struct zpci_dev *zdev = get_zdev_by_bus(bus); + + zpci_exit_slot(zdev); + zpci_cleanup_bus_resources(zdev); + zpci_free_domain(zdev); + + spin_lock(&zpci_list_lock); + list_del(&zdev->entry); + spin_unlock(&zpci_list_lock); + + kfree(zdev); +} + +static int zpci_scan_bus(struct zpci_dev *zdev) +{ + LIST_HEAD(resources); + int ret; + + ret = zpci_setup_bus_resources(zdev, &resources); + if (ret) + return ret; + + zdev->bus = pci_scan_root_bus(NULL, ZPCI_BUS_NR, &pci_root_ops, + zdev, &resources); + if (!zdev->bus) { + zpci_cleanup_bus_resources(zdev); + return -EIO; + } + + zdev->bus->max_bus_speed = zdev->max_bus_speed; + return 0; +} + int zpci_enable_device(struct zpci_dev *zdev) { int rc; diff --git a/arch/s390/pci/pci_clp.c b/arch/s390/pci/pci_clp.c index 84147984224..c747394029e 100644 --- a/arch/s390/pci/pci_clp.c +++ b/arch/s390/pci/pci_clp.c @@ -155,9 +155,9 @@ int clp_add_pci_device(u32 fid, u32 fh, int configured) int rc; zpci_dbg(3, "add fid:%x, fh:%x, c:%d\n", fid, fh, configured); - zdev = zpci_alloc_device(); - if (IS_ERR(zdev)) - return PTR_ERR(zdev); + zdev = kzalloc(sizeof(*zdev), GFP_KERNEL); + if (!zdev) + return -ENOMEM; zdev->fh = fh; zdev->fid = fid; @@ -178,7 +178,7 @@ int clp_add_pci_device(u32 fid, u32 fh, int configured) return 0; error: - zpci_free_device(zdev); + kfree(zdev); return rc; } diff --git a/arch/s390/pci/pci_event.c b/arch/s390/pci/pci_event.c index 278e671ec9a..800f064b0da 100644 --- a/arch/s390/pci/pci_event.c +++ b/arch/s390/pci/pci_event.c @@ -11,6 +11,7 @@ #include <linux/kernel.h> #include <linux/pci.h> #include <asm/pci_debug.h> +#include <asm/sclp.h> /* Content Code Description for PCI Function Error */ struct zpci_ccdf_err { @@ -42,10 +43,27 @@ struct zpci_ccdf_avail { u16 pec; /* PCI event code */ } __packed; -static void zpci_event_log_avail(struct zpci_ccdf_avail *ccdf) +void zpci_event_error(void *data) { + struct zpci_ccdf_err *ccdf = data; + struct zpci_dev *zdev = get_zdev_by_fid(ccdf->fid); + + zpci_err("error CCDF:\n"); + zpci_err_hex(ccdf, sizeof(*ccdf)); + + if (!zdev) + return; + + pr_err("%s: Event 0x%x reports an error for PCI function 0x%x\n", + pci_name(zdev->pdev), ccdf->pec, ccdf->fid); +} + +void zpci_event_availability(void *data) +{ + struct zpci_ccdf_avail *ccdf = data; struct zpci_dev *zdev = get_zdev_by_fid(ccdf->fid); struct pci_dev *pdev = zdev ? zdev->pdev : NULL; + int ret; pr_info("%s: Event 0x%x reconfigured PCI function 0x%x\n", pdev ? pci_name(pdev) : "n/a", ccdf->pec, ccdf->fid); @@ -53,36 +71,47 @@ static void zpci_event_log_avail(struct zpci_ccdf_avail *ccdf) zpci_err_hex(ccdf, sizeof(*ccdf)); switch (ccdf->pec) { - case 0x0301: - zpci_enable_device(zdev); + case 0x0301: /* Standby -> Configured */ + if (!zdev || zdev->state == ZPCI_FN_STATE_CONFIGURED) + break; + zdev->state = ZPCI_FN_STATE_CONFIGURED; + ret = zpci_enable_device(zdev); + if (ret) + break; + pci_rescan_bus(zdev->bus); break; - case 0x0302: + case 0x0302: /* Reserved -> Standby */ clp_add_pci_device(ccdf->fid, ccdf->fh, 0); break; - case 0x0306: + case 0x0303: /* Deconfiguration requested */ + if (pdev) + pci_stop_and_remove_bus_device(pdev); + + ret = zpci_disable_device(zdev); + if (ret) + break; + + ret = sclp_pci_deconfigure(zdev->fid); + zpci_dbg(3, "deconf fid:%x, rc:%d\n", zdev->fid, ret); + if (!ret) + zdev->state = ZPCI_FN_STATE_STANDBY; + + break; + case 0x0304: /* Configured -> Standby */ + if (pdev) + pci_stop_and_remove_bus_device(pdev); + + zpci_disable_device(zdev); + zdev->state = ZPCI_FN_STATE_STANDBY; + break; + case 0x0306: /* 0x308 or 0x302 for multiple devices */ clp_rescan_pci_devices(); break; + case 0x0308: /* Standby -> Reserved */ + pci_stop_root_bus(zdev->bus); + pci_remove_root_bus(zdev->bus); + break; default: break; } } - -void zpci_event_error(void *data) -{ - struct zpci_ccdf_err *ccdf = data; - struct zpci_dev *zdev = get_zdev_by_fid(ccdf->fid); - - zpci_err("error CCDF:\n"); - zpci_err_hex(ccdf, sizeof(*ccdf)); - - if (!zdev) - return; - - pr_err("%s: Event 0x%x reports an error for PCI function 0x%x\n", - pci_name(zdev->pdev), ccdf->pec, ccdf->fid); -} - -void zpci_event_availability(void *data) -{ - zpci_event_log_avail(data); -} |