| /* |
| * Copyright IBM Corp. 2007,2012 |
| * |
| * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>, |
| * Peter Oberparleiter <peter.oberparleiter@de.ibm.com> |
| */ |
| |
| #define KMSG_COMPONENT "sclp_cmd" |
| #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt |
| |
| #include <linux/completion.h> |
| #include <linux/init.h> |
| #include <linux/errno.h> |
| #include <linux/err.h> |
| #include <linux/export.h> |
| #include <linux/slab.h> |
| #include <linux/string.h> |
| #include <linux/mm.h> |
| #include <linux/mmzone.h> |
| #include <linux/memory.h> |
| #include <linux/module.h> |
| #include <linux/platform_device.h> |
| #include <asm/ctl_reg.h> |
| #include <asm/chpid.h> |
| #include <asm/setup.h> |
| #include <asm/page.h> |
| #include <asm/sclp.h> |
| |
| #include "sclp.h" |
| |
| static void sclp_sync_callback(struct sclp_req *req, void *data) |
| { |
| struct completion *completion = data; |
| |
| complete(completion); |
| } |
| |
| int sclp_sync_request(sclp_cmdw_t cmd, void *sccb) |
| { |
| return sclp_sync_request_timeout(cmd, sccb, 0); |
| } |
| |
| int sclp_sync_request_timeout(sclp_cmdw_t cmd, void *sccb, int timeout) |
| { |
| struct completion completion; |
| struct sclp_req *request; |
| int rc; |
| |
| request = kzalloc(sizeof(*request), GFP_KERNEL); |
| if (!request) |
| return -ENOMEM; |
| if (timeout) |
| request->queue_timeout = timeout; |
| request->command = cmd; |
| request->sccb = sccb; |
| request->status = SCLP_REQ_FILLED; |
| request->callback = sclp_sync_callback; |
| request->callback_data = &completion; |
| init_completion(&completion); |
| |
| /* Perform sclp request. */ |
| rc = sclp_add_request(request); |
| if (rc) |
| goto out; |
| wait_for_completion(&completion); |
| |
| /* Check response. */ |
| if (request->status != SCLP_REQ_DONE) { |
| pr_warning("sync request failed (cmd=0x%08x, " |
| "status=0x%02x)\n", cmd, request->status); |
| rc = -EIO; |
| } |
| out: |
| kfree(request); |
| return rc; |
| } |
| |
| /* |
| * CPU configuration related functions. |
| */ |
| |
| #define SCLP_CMDW_READ_CPU_INFO 0x00010001 |
| #define SCLP_CMDW_CONFIGURE_CPU 0x00110001 |
| #define SCLP_CMDW_DECONFIGURE_CPU 0x00100001 |
| |
| struct read_cpu_info_sccb { |
| struct sccb_header header; |
| u16 nr_configured; |
| u16 offset_configured; |
| u16 nr_standby; |
| u16 offset_standby; |
| u8 reserved[4096 - 16]; |
| } __attribute__((packed, aligned(PAGE_SIZE))); |
| |
| static void sclp_fill_cpu_info(struct sclp_cpu_info *info, |
| struct read_cpu_info_sccb *sccb) |
| { |
| char *page = (char *) sccb; |
| |
| memset(info, 0, sizeof(*info)); |
| info->configured = sccb->nr_configured; |
| info->standby = sccb->nr_standby; |
| info->combined = sccb->nr_configured + sccb->nr_standby; |
| info->has_cpu_type = sclp.has_cpu_type; |
| memcpy(&info->cpu, page + sccb->offset_configured, |
| info->combined * sizeof(struct sclp_cpu_entry)); |
| } |
| |
| int sclp_get_cpu_info(struct sclp_cpu_info *info) |
| { |
| int rc; |
| struct read_cpu_info_sccb *sccb; |
| |
| if (!SCLP_HAS_CPU_INFO) |
| return -EOPNOTSUPP; |
| sccb = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA); |
| if (!sccb) |
| return -ENOMEM; |
| sccb->header.length = sizeof(*sccb); |
| rc = sclp_sync_request_timeout(SCLP_CMDW_READ_CPU_INFO, sccb, |
| SCLP_QUEUE_INTERVAL); |
| if (rc) |
| goto out; |
| if (sccb->header.response_code != 0x0010) { |
| pr_warning("readcpuinfo failed (response=0x%04x)\n", |
| sccb->header.response_code); |
| rc = -EIO; |
| goto out; |
| } |
| sclp_fill_cpu_info(info, sccb); |
| out: |
| free_page((unsigned long) sccb); |
| return rc; |
| } |
| |
| struct cpu_configure_sccb { |
| struct sccb_header header; |
| } __attribute__((packed, aligned(8))); |
| |
| static int do_cpu_configure(sclp_cmdw_t cmd) |
| { |
| struct cpu_configure_sccb *sccb; |
| int rc; |
| |
| if (!SCLP_HAS_CPU_RECONFIG) |
| return -EOPNOTSUPP; |
| /* |
| * This is not going to cross a page boundary since we force |
| * kmalloc to have a minimum alignment of 8 bytes on s390. |
| */ |
| sccb = kzalloc(sizeof(*sccb), GFP_KERNEL | GFP_DMA); |
| if (!sccb) |
| return -ENOMEM; |
| sccb->header.length = sizeof(*sccb); |
| rc = sclp_sync_request_timeout(cmd, sccb, SCLP_QUEUE_INTERVAL); |
| if (rc) |
| goto out; |
| switch (sccb->header.response_code) { |
| case 0x0020: |
| case 0x0120: |
| break; |
| default: |
| pr_warning("configure cpu failed (cmd=0x%08x, " |
| "response=0x%04x)\n", cmd, |
| sccb->header.response_code); |
| rc = -EIO; |
| break; |
| } |
| out: |
| kfree(sccb); |
| return rc; |
| } |
| |
| int sclp_cpu_configure(u8 cpu) |
| { |
| return do_cpu_configure(SCLP_CMDW_CONFIGURE_CPU | cpu << 8); |
| } |
| |
| int sclp_cpu_deconfigure(u8 cpu) |
| { |
| return do_cpu_configure(SCLP_CMDW_DECONFIGURE_CPU | cpu << 8); |
| } |
| |
| #ifdef CONFIG_MEMORY_HOTPLUG |
| |
| static DEFINE_MUTEX(sclp_mem_mutex); |
| static LIST_HEAD(sclp_mem_list); |
| static u8 sclp_max_storage_id; |
| static DECLARE_BITMAP(sclp_storage_ids, 256); |
| static int sclp_mem_state_changed; |
| |
| struct memory_increment { |
| struct list_head list; |
| u16 rn; |
| int standby; |
| }; |
| |
| struct assign_storage_sccb { |
| struct sccb_header header; |
| u16 rn; |
| } __packed; |
| |
| int arch_get_memory_phys_device(unsigned long start_pfn) |
| { |
| if (!sclp.rzm) |
| return 0; |
| return PFN_PHYS(start_pfn) >> ilog2(sclp.rzm); |
| } |
| |
| static unsigned long long rn2addr(u16 rn) |
| { |
| return (unsigned long long) (rn - 1) * sclp.rzm; |
| } |
| |
| static int do_assign_storage(sclp_cmdw_t cmd, u16 rn) |
| { |
| struct assign_storage_sccb *sccb; |
| int rc; |
| |
| sccb = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA); |
| if (!sccb) |
| return -ENOMEM; |
| sccb->header.length = PAGE_SIZE; |
| sccb->rn = rn; |
| rc = sclp_sync_request_timeout(cmd, sccb, SCLP_QUEUE_INTERVAL); |
| if (rc) |
| goto out; |
| switch (sccb->header.response_code) { |
| case 0x0020: |
| case 0x0120: |
| break; |
| default: |
| pr_warning("assign storage failed (cmd=0x%08x, " |
| "response=0x%04x, rn=0x%04x)\n", cmd, |
| sccb->header.response_code, rn); |
| rc = -EIO; |
| break; |
| } |
| out: |
| free_page((unsigned long) sccb); |
| return rc; |
| } |
| |
| static int sclp_assign_storage(u16 rn) |
| { |
| unsigned long long start; |
| int rc; |
| |
| rc = do_assign_storage(0x000d0001, rn); |
| if (rc) |
| return rc; |
| start = rn2addr(rn); |
| storage_key_init_range(start, start + sclp.rzm); |
| return 0; |
| } |
| |
| static int sclp_unassign_storage(u16 rn) |
| { |
| return do_assign_storage(0x000c0001, rn); |
| } |
| |
| struct attach_storage_sccb { |
| struct sccb_header header; |
| u16 :16; |
| u16 assigned; |
| u32 :32; |
| u32 entries[0]; |
| } __packed; |
| |
| static int sclp_attach_storage(u8 id) |
| { |
| struct attach_storage_sccb *sccb; |
| int rc; |
| int i; |
| |
| sccb = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA); |
| if (!sccb) |
| return -ENOMEM; |
| sccb->header.length = PAGE_SIZE; |
| rc = sclp_sync_request_timeout(0x00080001 | id << 8, sccb, |
| SCLP_QUEUE_INTERVAL); |
| if (rc) |
| goto out; |
| switch (sccb->header.response_code) { |
| case 0x0020: |
| set_bit(id, sclp_storage_ids); |
| for (i = 0; i < sccb->assigned; i++) { |
| if (sccb->entries[i]) |
| sclp_unassign_storage(sccb->entries[i] >> 16); |
| } |
| break; |
| default: |
| rc = -EIO; |
| break; |
| } |
| out: |
| free_page((unsigned long) sccb); |
| return rc; |
| } |
| |
| static int sclp_mem_change_state(unsigned long start, unsigned long size, |
| int online) |
| { |
| struct memory_increment *incr; |
| unsigned long long istart; |
| int rc = 0; |
| |
| list_for_each_entry(incr, &sclp_mem_list, list) { |
| istart = rn2addr(incr->rn); |
| if (start + size - 1 < istart) |
| break; |
| if (start > istart + sclp.rzm - 1) |
| continue; |
| if (online) |
| rc |= sclp_assign_storage(incr->rn); |
| else |
| sclp_unassign_storage(incr->rn); |
| if (rc == 0) |
| incr->standby = online ? 0 : 1; |
| } |
| return rc ? -EIO : 0; |
| } |
| |
| static bool contains_standby_increment(unsigned long start, unsigned long end) |
| { |
| struct memory_increment *incr; |
| unsigned long istart; |
| |
| list_for_each_entry(incr, &sclp_mem_list, list) { |
| istart = rn2addr(incr->rn); |
| if (end - 1 < istart) |
| continue; |
| if (start > istart + sclp.rzm - 1) |
| continue; |
| if (incr->standby) |
| return true; |
| } |
| return false; |
| } |
| |
| static int sclp_mem_notifier(struct notifier_block *nb, |
| unsigned long action, void *data) |
| { |
| unsigned long start, size; |
| struct memory_notify *arg; |
| unsigned char id; |
| int rc = 0; |
| |
| arg = data; |
| start = arg->start_pfn << PAGE_SHIFT; |
| size = arg->nr_pages << PAGE_SHIFT; |
| mutex_lock(&sclp_mem_mutex); |
| for_each_clear_bit(id, sclp_storage_ids, sclp_max_storage_id + 1) |
| sclp_attach_storage(id); |
| switch (action) { |
| case MEM_GOING_OFFLINE: |
| /* |
| * We do not allow to set memory blocks offline that contain |
| * standby memory. This is done to simplify the "memory online" |
| * case. |
| */ |
| if (contains_standby_increment(start, start + size)) |
| rc = -EPERM; |
| break; |
| case MEM_ONLINE: |
| case MEM_CANCEL_OFFLINE: |
| break; |
| case MEM_GOING_ONLINE: |
| rc = sclp_mem_change_state(start, size, 1); |
| break; |
| case MEM_CANCEL_ONLINE: |
| sclp_mem_change_state(start, size, 0); |
| break; |
| case MEM_OFFLINE: |
| sclp_mem_change_state(start, size, 0); |
| break; |
| default: |
| rc = -EINVAL; |
| break; |
| } |
| if (!rc) |
| sclp_mem_state_changed = 1; |
| mutex_unlock(&sclp_mem_mutex); |
| return rc ? NOTIFY_BAD : NOTIFY_OK; |
| } |
| |
| static struct notifier_block sclp_mem_nb = { |
| .notifier_call = sclp_mem_notifier, |
| }; |
| |
| static void __init align_to_block_size(unsigned long long *start, |
| unsigned long long *size) |
| { |
| unsigned long long start_align, size_align, alignment; |
| |
| alignment = memory_block_size_bytes(); |
| start_align = roundup(*start, alignment); |
| size_align = rounddown(*start + *size, alignment) - start_align; |
| |
| pr_info("Standby memory at 0x%llx (%lluM of %lluM usable)\n", |
| *start, size_align >> 20, *size >> 20); |
| *start = start_align; |
| *size = size_align; |
| } |
| |
| static void __init add_memory_merged(u16 rn) |
| { |
| static u16 first_rn, num; |
| unsigned long long start, size; |
| |
| if (rn && first_rn && (first_rn + num == rn)) { |
| num++; |
| return; |
| } |
| if (!first_rn) |
| goto skip_add; |
| start = rn2addr(first_rn); |
| size = (unsigned long long) num * sclp.rzm; |
| if (start >= VMEM_MAX_PHYS) |
| goto skip_add; |
| if (start + size > VMEM_MAX_PHYS) |
| size = VMEM_MAX_PHYS - start; |
| if (memory_end_set && (start >= memory_end)) |
| goto skip_add; |
| if (memory_end_set && (start + size > memory_end)) |
| size = memory_end - start; |
| align_to_block_size(&start, &size); |
| if (size) |
| add_memory(0, start, size); |
| skip_add: |
| first_rn = rn; |
| num = 1; |
| } |
| |
| static void __init sclp_add_standby_memory(void) |
| { |
| struct memory_increment *incr; |
| |
| list_for_each_entry(incr, &sclp_mem_list, list) |
| if (incr->standby) |
| add_memory_merged(incr->rn); |
| add_memory_merged(0); |
| } |
| |
| static void __init insert_increment(u16 rn, int standby, int assigned) |
| { |
| struct memory_increment *incr, *new_incr; |
| struct list_head *prev; |
| u16 last_rn; |
| |
| new_incr = kzalloc(sizeof(*new_incr), GFP_KERNEL); |
| if (!new_incr) |
| return; |
| new_incr->rn = rn; |
| new_incr->standby = standby; |
| last_rn = 0; |
| prev = &sclp_mem_list; |
| list_for_each_entry(incr, &sclp_mem_list, list) { |
| if (assigned && incr->rn > rn) |
| break; |
| if (!assigned && incr->rn - last_rn > 1) |
| break; |
| last_rn = incr->rn; |
| prev = &incr->list; |
| } |
| if (!assigned) |
| new_incr->rn = last_rn + 1; |
| if (new_incr->rn > sclp.rnmax) { |
| kfree(new_incr); |
| return; |
| } |
| list_add(&new_incr->list, prev); |
| } |
| |
| static int sclp_mem_freeze(struct device *dev) |
| { |
| if (!sclp_mem_state_changed) |
| return 0; |
| pr_err("Memory hotplug state changed, suspend refused.\n"); |
| return -EPERM; |
| } |
| |
| struct read_storage_sccb { |
| struct sccb_header header; |
| u16 max_id; |
| u16 assigned; |
| u16 standby; |
| u16 :16; |
| u32 entries[0]; |
| } __packed; |
| |
| static const struct dev_pm_ops sclp_mem_pm_ops = { |
| .freeze = sclp_mem_freeze, |
| }; |
| |
| static struct platform_driver sclp_mem_pdrv = { |
| .driver = { |
| .name = "sclp_mem", |
| .pm = &sclp_mem_pm_ops, |
| }, |
| }; |
| |
| static int __init sclp_detect_standby_memory(void) |
| { |
| struct platform_device *sclp_pdev; |
| struct read_storage_sccb *sccb; |
| int i, id, assigned, rc; |
| |
| if (OLDMEM_BASE) /* No standby memory in kdump mode */ |
| return 0; |
| if ((sclp.facilities & 0xe00000000000ULL) != 0xe00000000000ULL) |
| return 0; |
| rc = -ENOMEM; |
| sccb = (void *) __get_free_page(GFP_KERNEL | GFP_DMA); |
| if (!sccb) |
| goto out; |
| assigned = 0; |
| for (id = 0; id <= sclp_max_storage_id; id++) { |
| memset(sccb, 0, PAGE_SIZE); |
| sccb->header.length = PAGE_SIZE; |
| rc = sclp_sync_request(0x00040001 | id << 8, sccb); |
| if (rc) |
| goto out; |
| switch (sccb->header.response_code) { |
| case 0x0010: |
| set_bit(id, sclp_storage_ids); |
| for (i = 0; i < sccb->assigned; i++) { |
| if (!sccb->entries[i]) |
| continue; |
| assigned++; |
| insert_increment(sccb->entries[i] >> 16, 0, 1); |
| } |
| break; |
| case 0x0310: |
| break; |
| case 0x0410: |
| for (i = 0; i < sccb->assigned; i++) { |
| if (!sccb->entries[i]) |
| continue; |
| assigned++; |
| insert_increment(sccb->entries[i] >> 16, 1, 1); |
| } |
| break; |
| default: |
| rc = -EIO; |
| break; |
| } |
| if (!rc) |
| sclp_max_storage_id = sccb->max_id; |
| } |
| if (rc || list_empty(&sclp_mem_list)) |
| goto out; |
| for (i = 1; i <= sclp.rnmax - assigned; i++) |
| insert_increment(0, 1, 0); |
| rc = register_memory_notifier(&sclp_mem_nb); |
| if (rc) |
| goto out; |
| rc = platform_driver_register(&sclp_mem_pdrv); |
| if (rc) |
| goto out; |
| sclp_pdev = platform_device_register_simple("sclp_mem", -1, NULL, 0); |
| rc = PTR_ERR_OR_ZERO(sclp_pdev); |
| if (rc) |
| goto out_driver; |
| sclp_add_standby_memory(); |
| goto out; |
| out_driver: |
| platform_driver_unregister(&sclp_mem_pdrv); |
| out: |
| free_page((unsigned long) sccb); |
| return rc; |
| } |
| __initcall(sclp_detect_standby_memory); |
| |
| #endif /* CONFIG_MEMORY_HOTPLUG */ |
| |
| /* |
| * PCI I/O adapter configuration related functions. |
| */ |
| #define SCLP_CMDW_CONFIGURE_PCI 0x001a0001 |
| #define SCLP_CMDW_DECONFIGURE_PCI 0x001b0001 |
| |
| #define SCLP_RECONFIG_PCI_ATPYE 2 |
| |
| struct pci_cfg_sccb { |
| struct sccb_header header; |
| u8 atype; /* adapter type */ |
| u8 reserved1; |
| u16 reserved2; |
| u32 aid; /* adapter identifier */ |
| } __packed; |
| |
| static int do_pci_configure(sclp_cmdw_t cmd, u32 fid) |
| { |
| struct pci_cfg_sccb *sccb; |
| int rc; |
| |
| if (!SCLP_HAS_PCI_RECONFIG) |
| return -EOPNOTSUPP; |
| |
| sccb = (struct pci_cfg_sccb *) get_zeroed_page(GFP_KERNEL | GFP_DMA); |
| if (!sccb) |
| return -ENOMEM; |
| |
| sccb->header.length = PAGE_SIZE; |
| sccb->atype = SCLP_RECONFIG_PCI_ATPYE; |
| sccb->aid = fid; |
| rc = sclp_sync_request(cmd, sccb); |
| if (rc) |
| goto out; |
| switch (sccb->header.response_code) { |
| case 0x0020: |
| case 0x0120: |
| break; |
| default: |
| pr_warn("configure PCI I/O adapter failed: cmd=0x%08x response=0x%04x\n", |
| cmd, sccb->header.response_code); |
| rc = -EIO; |
| break; |
| } |
| out: |
| free_page((unsigned long) sccb); |
| return rc; |
| } |
| |
| int sclp_pci_configure(u32 fid) |
| { |
| return do_pci_configure(SCLP_CMDW_CONFIGURE_PCI, fid); |
| } |
| EXPORT_SYMBOL(sclp_pci_configure); |
| |
| int sclp_pci_deconfigure(u32 fid) |
| { |
| return do_pci_configure(SCLP_CMDW_DECONFIGURE_PCI, fid); |
| } |
| EXPORT_SYMBOL(sclp_pci_deconfigure); |
| |
| /* |
| * Channel path configuration related functions. |
| */ |
| |
| #define SCLP_CMDW_CONFIGURE_CHPATH 0x000f0001 |
| #define SCLP_CMDW_DECONFIGURE_CHPATH 0x000e0001 |
| #define SCLP_CMDW_READ_CHPATH_INFORMATION 0x00030001 |
| |
| struct chp_cfg_sccb { |
| struct sccb_header header; |
| u8 ccm; |
| u8 reserved[6]; |
| u8 cssid; |
| } __attribute__((packed)); |
| |
| static int do_chp_configure(sclp_cmdw_t cmd) |
| { |
| struct chp_cfg_sccb *sccb; |
| int rc; |
| |
| if (!SCLP_HAS_CHP_RECONFIG) |
| return -EOPNOTSUPP; |
| /* Prepare sccb. */ |
| sccb = (struct chp_cfg_sccb *) get_zeroed_page(GFP_KERNEL | GFP_DMA); |
| if (!sccb) |
| return -ENOMEM; |
| sccb->header.length = sizeof(*sccb); |
| rc = sclp_sync_request(cmd, sccb); |
| if (rc) |
| goto out; |
| switch (sccb->header.response_code) { |
| case 0x0020: |
| case 0x0120: |
| case 0x0440: |
| case 0x0450: |
| break; |
| default: |
| pr_warning("configure channel-path failed " |
| "(cmd=0x%08x, response=0x%04x)\n", cmd, |
| sccb->header.response_code); |
| rc = -EIO; |
| break; |
| } |
| out: |
| free_page((unsigned long) sccb); |
| return rc; |
| } |
| |
| /** |
| * sclp_chp_configure - perform configure channel-path sclp command |
| * @chpid: channel-path ID |
| * |
| * Perform configure channel-path command sclp command for specified chpid. |
| * Return 0 after command successfully finished, non-zero otherwise. |
| */ |
| int sclp_chp_configure(struct chp_id chpid) |
| { |
| return do_chp_configure(SCLP_CMDW_CONFIGURE_CHPATH | chpid.id << 8); |
| } |
| |
| /** |
| * sclp_chp_deconfigure - perform deconfigure channel-path sclp command |
| * @chpid: channel-path ID |
| * |
| * Perform deconfigure channel-path command sclp command for specified chpid |
| * and wait for completion. On success return 0. Return non-zero otherwise. |
| */ |
| int sclp_chp_deconfigure(struct chp_id chpid) |
| { |
| return do_chp_configure(SCLP_CMDW_DECONFIGURE_CHPATH | chpid.id << 8); |
| } |
| |
| struct chp_info_sccb { |
| struct sccb_header header; |
| u8 recognized[SCLP_CHP_INFO_MASK_SIZE]; |
| u8 standby[SCLP_CHP_INFO_MASK_SIZE]; |
| u8 configured[SCLP_CHP_INFO_MASK_SIZE]; |
| u8 ccm; |
| u8 reserved[6]; |
| u8 cssid; |
| } __attribute__((packed)); |
| |
| /** |
| * sclp_chp_read_info - perform read channel-path information sclp command |
| * @info: resulting channel-path information data |
| * |
| * Perform read channel-path information sclp command and wait for completion. |
| * On success, store channel-path information in @info and return 0. Return |
| * non-zero otherwise. |
| */ |
| int sclp_chp_read_info(struct sclp_chp_info *info) |
| { |
| struct chp_info_sccb *sccb; |
| int rc; |
| |
| if (!SCLP_HAS_CHP_INFO) |
| return -EOPNOTSUPP; |
| /* Prepare sccb. */ |
| sccb = (struct chp_info_sccb *) get_zeroed_page(GFP_KERNEL | GFP_DMA); |
| if (!sccb) |
| return -ENOMEM; |
| sccb->header.length = sizeof(*sccb); |
| rc = sclp_sync_request(SCLP_CMDW_READ_CHPATH_INFORMATION, sccb); |
| if (rc) |
| goto out; |
| if (sccb->header.response_code != 0x0010) { |
| pr_warning("read channel-path info failed " |
| "(response=0x%04x)\n", sccb->header.response_code); |
| rc = -EIO; |
| goto out; |
| } |
| memcpy(info->recognized, sccb->recognized, SCLP_CHP_INFO_MASK_SIZE); |
| memcpy(info->standby, sccb->standby, SCLP_CHP_INFO_MASK_SIZE); |
| memcpy(info->configured, sccb->configured, SCLP_CHP_INFO_MASK_SIZE); |
| out: |
| free_page((unsigned long) sccb); |
| return rc; |
| } |