1 files changed, 71 insertions, 677 deletions

diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c
index 8cd34bf644b3..be4730936f5c 100644
--- a/drivers/s390/char/sclp_cmd.c
+++ b/drivers/s390/char/sclp_cmd.c
@@ -1,192 +1,52 @@
+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright IBM Corp. 2007,2012
  *
- * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>,
- *	      Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
+ * Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
  */
 
-#define KMSG_COMPONENT "sclp_cmd"
-#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
+#define pr_fmt(fmt) "sclp_cmd: " fmt
 
 #include <linux/completion.h>
-#include <linux/init.h>
-#include <linux/errno.h>
 #include <linux/err.h>
-#include <linux/export.h>
+#include <linux/errno.h>
+#include <linux/init.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/ctlreg.h>
 #include <asm/sclp.h>
 
 #include "sclp.h"
 
-#define SCLP_CMDW_READ_SCP_INFO		0x00020001
-#define SCLP_CMDW_READ_SCP_INFO_FORCED	0x00120001
-
-struct read_info_sccb {
-	struct	sccb_header header;	/* 0-7 */
-	u16	rnmax;			/* 8-9 */
-	u8	rnsize;			/* 10 */
-	u8	_reserved0[24 - 11];	/* 11-15 */
-	u8	loadparm[8];		/* 24-31 */
-	u8	_reserved1[48 - 32];	/* 32-47 */
-	u64	facilities;		/* 48-55 */
-	u8	_reserved2[84 - 56];	/* 56-83 */
-	u8	fac84;			/* 84 */
-	u8	fac85;			/* 85 */
-	u8	_reserved3[91 - 86];	/* 86-90 */
-	u8	flags;			/* 91 */
-	u8	_reserved4[100 - 92];	/* 92-99 */
-	u32	rnsize2;		/* 100-103 */
-	u64	rnmax2;			/* 104-111 */
-	u8	_reserved5[4096 - 112];	/* 112-4095 */
-} __attribute__((packed, aligned(PAGE_SIZE)));
-
-static struct init_sccb __initdata early_event_mask_sccb __aligned(PAGE_SIZE);
-static struct read_info_sccb __initdata early_read_info_sccb;
-static int __initdata early_read_info_sccb_valid;
-
-u64 sclp_facilities;
-static u8 sclp_fac84;
-static unsigned long long rzm;
-static unsigned long long rnmax;
-
-static int __init sclp_cmd_sync_early(sclp_cmdw_t cmd, void *sccb)
-{
-	int rc;
-
-	__ctl_set_bit(0, 9);
-	rc = sclp_service_call(cmd, sccb);
-	if (rc)
-		goto out;
-	__load_psw_mask(PSW_DEFAULT_KEY | PSW_MASK_BASE | PSW_MASK_EA |
-			PSW_MASK_BA | PSW_MASK_EXT | PSW_MASK_WAIT);
-	local_irq_disable();
-out:
-	/* Contents of the sccb might have changed. */
-	barrier();
-	__ctl_clear_bit(0, 9);
-	return rc;
-}
-
-static void __init sclp_read_info_early(void)
-{
-	int rc;
-	int i;
-	struct read_info_sccb *sccb;
-	sclp_cmdw_t commands[] = {SCLP_CMDW_READ_SCP_INFO_FORCED,
-				  SCLP_CMDW_READ_SCP_INFO};
-
-	sccb = &early_read_info_sccb;
-	for (i = 0; i < ARRAY_SIZE(commands); i++) {
-		do {
-			memset(sccb, 0, sizeof(*sccb));
-			sccb->header.length = sizeof(*sccb);
-			sccb->header.function_code = 0x80;
-			sccb->header.control_mask[2] = 0x80;
-			rc = sclp_cmd_sync_early(commands[i], sccb);
-		} while (rc == -EBUSY);
-
-		if (rc)
-			break;
-		if (sccb->header.response_code == 0x10) {
-			early_read_info_sccb_valid = 1;
-			break;
-		}
-		if (sccb->header.response_code != 0x1f0)
-			break;
-	}
-}
-
-static void __init sclp_event_mask_early(void)
-{
-	struct init_sccb *sccb = &early_event_mask_sccb;
-	int rc;
-
-	do {
-		memset(sccb, 0, sizeof(*sccb));
-		sccb->header.length = sizeof(*sccb);
-		sccb->mask_length = sizeof(sccb_mask_t);
-		rc = sclp_cmd_sync_early(SCLP_CMDW_WRITE_EVENT_MASK, sccb);
-	} while (rc == -EBUSY);
-}
-
-void __init sclp_facilities_detect(void)
-{
-	struct read_info_sccb *sccb;
-
-	sclp_read_info_early();
-	if (!early_read_info_sccb_valid)
-		return;
-
-	sccb = &early_read_info_sccb;
-	sclp_facilities = sccb->facilities;
-	sclp_fac84 = sccb->fac84;
-	if (sccb->fac85 & 0x02)
-		S390_lowcore.machine_flags |= MACHINE_FLAG_ESOP;
-	rnmax = sccb->rnmax ? sccb->rnmax : sccb->rnmax2;
-	rzm = sccb->rnsize ? sccb->rnsize : sccb->rnsize2;
-	rzm <<= 20;
-
-	sclp_event_mask_early();
-}
-
-bool __init sclp_has_linemode(void)
-{
-	struct init_sccb *sccb = &early_event_mask_sccb;
-
-	if (sccb->header.response_code != 0x20)
-		return 0;
-	if (sccb->sclp_send_mask & (EVTYP_MSG_MASK | EVTYP_PMSGCMD_MASK))
-		return 1;
-	return 0;
-}
-
-bool __init sclp_has_vt220(void)
-{
-	struct init_sccb *sccb = &early_event_mask_sccb;
-
-	if (sccb->header.response_code != 0x20)
-		return 0;
-	if (sccb->sclp_send_mask & EVTYP_VT220MSG_MASK)
-		return 1;
-	return 0;
-}
-
-unsigned long long sclp_get_rnmax(void)
-{
-	return rnmax;
-}
+/* CPU configuration related functions */
+#define SCLP_CMDW_CONFIGURE_CPU			0x00110001
+#define SCLP_CMDW_DECONFIGURE_CPU		0x00100001
+/* Channel path configuration related functions */
+#define SCLP_CMDW_CONFIGURE_CHPATH		0x000f0001
+#define SCLP_CMDW_DECONFIGURE_CHPATH		0x000e0001
+#define SCLP_CMDW_READ_CHPATH_INFORMATION	0x00030001
 
-unsigned long long sclp_get_rzm(void)
-{
-	return rzm;
-}
+struct cpu_configure_sccb {
+	struct sccb_header header;
+} __packed __aligned(8);
 
-/*
- * This function will be called after sclp_facilities_detect(), which gets
- * called from early.c code. Therefore the sccb should have valid contents.
- */
-void __init sclp_get_ipl_info(struct sclp_ipl_info *info)
-{
-	struct read_info_sccb *sccb;
+struct chp_cfg_sccb {
+	struct sccb_header header;
+	u8 ccm;
+	u8 reserved[6];
+	u8 cssid;
+} __packed;
 
-	if (!early_read_info_sccb_valid)
-		return;
-	sccb = &early_read_info_sccb;
-	info->is_valid = 1;
-	if (sccb->flags & 0x2)
-		info->has_dump = 1;
-	memcpy(&info->loadparm, &sccb->loadparm, LOADPARM_LEN);
-}
+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;
+} __packed;
 
 static void sclp_sync_callback(struct sclp_req *req, void *data)
 {
@@ -197,6 +57,11 @@ static void sclp_sync_callback(struct sclp_req *req, void *data)
 
 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;
@@ -204,6 +69,8 @@ int sclp_sync_request(sclp_cmdw_t cmd, void *sccb)
 	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;
@@ -211,16 +78,14 @@ int sclp_sync_request(sclp_cmdw_t cmd, void *sccb)
 	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);
+		pr_warn("sync request failed (cmd=0x%08x, status=0x%02x)\n",
+			cmd, request->status);
 		rc = -EIO;
 	}
 out:
@@ -228,68 +93,37 @@ out:
 	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_fac84 & 0x1;
-	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 _sclp_get_core_info(struct sclp_core_info *info)
 {
-	int rc;
 	struct read_cpu_info_sccb *sccb;
+	int rc, length;
 
 	if (!SCLP_HAS_CPU_INFO)
 		return -EOPNOTSUPP;
-	sccb = (void *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
+
+	length = test_facility(140) ? EXT_SCCB_READ_CPU : PAGE_SIZE;
+	sccb = (void *)__get_free_pages(GFP_KERNEL | GFP_DMA | __GFP_ZERO, get_order(length));
 	if (!sccb)
 		return -ENOMEM;
-	sccb->header.length = sizeof(*sccb);
-	rc = sclp_sync_request(SCLP_CMDW_READ_CPU_INFO, sccb);
+	sccb->header.length = length;
+	sccb->header.control_mask[2] = 0x80;
+	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);
+		pr_warn("readcpuinfo failed (response=0x%04x)\n",
+			sccb->header.response_code);
 		rc = -EIO;
 		goto out;
 	}
-	sclp_fill_cpu_info(info, sccb);
+	sclp_fill_core_info(info, sccb);
 out:
-	free_page((unsigned long) sccb);
+	free_pages((unsigned long)sccb, get_order(length));
 	return rc;
 }
 
-struct cpu_configure_sccb {
-	struct sccb_header header;
-} __attribute__((packed, aligned(8)));
-
-static int do_cpu_configure(sclp_cmdw_t cmd)
+static int do_core_configure(sclp_cmdw_t cmd)
 {
 	struct cpu_configure_sccb *sccb;
 	int rc;
@@ -297,14 +131,14 @@ static int do_cpu_configure(sclp_cmdw_t cmd)
 	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.
+	 * Use kmalloc to have a minimum alignment of 8 bytes and ensure sccb
+	 * is not going to cross a page boundary.
 	 */
 	sccb = kzalloc(sizeof(*sccb), GFP_KERNEL | GFP_DMA);
 	if (!sccb)
 		return -ENOMEM;
 	sccb->header.length = sizeof(*sccb);
-	rc = sclp_sync_request(cmd, sccb);
+	rc = sclp_sync_request_timeout(cmd, sccb, SCLP_QUEUE_INTERVAL);
 	if (rc)
 		goto out;
 	switch (sccb->header.response_code) {
@@ -312,452 +146,25 @@ static int do_cpu_configure(sclp_cmdw_t cmd)
 	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 unsigned long sclp_storage_ids[256 / BITS_PER_LONG];
-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 (!rzm)
-		return 0;
-	return PFN_PHYS(start_pfn) >> ilog2(rzm);
-}
-
-static unsigned long long rn2addr(u16 rn)
-{
-	return (unsigned long long) (rn - 1) * 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(cmd, sccb);
-	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 + 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(0x00080001 | id << 8, sccb);
-	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 + rzm - 1)
-			continue;
-		if (online)
-			rc |= sclp_assign_storage(incr->rn);
-		else
-			sclp_unassign_storage(incr->rn);
-	}
-	return rc ? -EIO : 0;
-}
-
-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_ONLINE:
-	case MEM_GOING_OFFLINE:
-	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 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 * 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;
-	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 > 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 (!early_read_info_sccb_valid)
-		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 <= 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_RET(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",
+		pr_warn("configure cpu failed (cmd=0x%08x, response=0x%04x)\n",
 			cmd, sccb->header.response_code);
 		rc = -EIO;
 		break;
 	}
 out:
-	free_page((unsigned long) sccb);
+	kfree(sccb);
 	return rc;
 }
 
-int sclp_pci_configure(u32 fid)
+int sclp_core_configure(u8 core)
 {
-	return do_pci_configure(SCLP_CMDW_CONFIGURE_PCI, fid);
+	return do_core_configure(SCLP_CMDW_CONFIGURE_CPU | core << 8);
 }
-EXPORT_SYMBOL(sclp_pci_configure);
 
-int sclp_pci_deconfigure(u32 fid)
+int sclp_core_deconfigure(u8 core)
 {
-	return do_pci_configure(SCLP_CMDW_DECONFIGURE_PCI, fid);
+	return do_core_configure(SCLP_CMDW_DECONFIGURE_CPU | core << 8);
 }
-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)
 {
@@ -766,8 +173,7 @@ static int do_chp_configure(sclp_cmdw_t cmd)
 
 	if (!SCLP_HAS_CHP_RECONFIG)
 		return -EOPNOTSUPP;
-	/* Prepare sccb. */
-	sccb = (struct chp_cfg_sccb *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
+	sccb = (struct chp_cfg_sccb *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
 	if (!sccb)
 		return -ENOMEM;
 	sccb->header.length = sizeof(*sccb);
@@ -781,14 +187,13 @@ static int do_chp_configure(sclp_cmdw_t cmd)
 	case 0x0450:
 		break;
 	default:
-		pr_warning("configure channel-path failed "
-			   "(cmd=0x%08x, response=0x%04x)\n", cmd,
-			   sccb->header.response_code);
+		pr_warn("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);
+	free_page((unsigned long)sccb);
 	return rc;
 }
 
@@ -816,16 +221,6 @@ 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
@@ -841,8 +236,7 @@ int sclp_chp_read_info(struct sclp_chp_info *info)
 
 	if (!SCLP_HAS_CHP_INFO)
 		return -EOPNOTSUPP;
-	/* Prepare sccb. */
-	sccb = (struct chp_info_sccb *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
+	sccb = (struct chp_info_sccb *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
 	if (!sccb)
 		return -ENOMEM;
 	sccb->header.length = sizeof(*sccb);
@@ -850,8 +244,8 @@ int sclp_chp_read_info(struct sclp_chp_info *info)
 	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);
+		pr_warn("read channel-path info failed (response=0x%04x)\n",
+			sccb->header.response_code);
 		rc = -EIO;
 		goto out;
 	}
@@ -859,6 +253,6 @@ int sclp_chp_read_info(struct sclp_chp_info *info)
 	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);
+	free_page((unsigned long)sccb);
 	return rc;
 }