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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-05 13:11:02 -0500
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-05 13:11:02 -0500
commit39ce941ec15032c0efc3632b9f00a6b2365e1870 (patch)
tree9ac548adf0444b8a74e31c984e5a49766fc2c385
parent3d412f60b71e588544e7b75861084f12aa1d7acd (diff)
parentc5411dba58c28736d25cffef65da1e01ed7d1423 (diff)
Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6
* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: [S390] dcss: Initialize workqueue before using it. [S390] Remove BUILD_BUG_ON() in vmem code. [S390] sclp_tty/sclp_vt220: Fix scheduling while atomic [S390] dasd: fix panic caused by alias device offline [S390] dasd: add ifcc handling [S390] latencytop s390 support. [S390] Implement ext2_find_next_bit. [S390] Cleanup & optimize bitops. [S390] Define GENERIC_LOCKBREAK. [S390] console: allow vt220 console to be the only console [S390] Fix couple of section mismatches. [S390] Fix smp_call_function_mask semantics. [S390] Fix linker script. [S390] DEBUG_PAGEALLOC support for s390. [S390] cio: Add shutdown callback for ccwgroup. [S390] cio: Update documentation. [S390] cio: Clean up chsc response code handling. [S390] cio: make sense id procedure work with partial hardware response
Diffstat
-rw-r--r--Documentation/DocBook/s390-drivers.tmpl21
-rw-r--r--arch/s390/Kconfig8
-rw-r--r--arch/s390/Kconfig.debug8
-rw-r--r--arch/s390/kernel/entry.S7
-rw-r--r--arch/s390/kernel/entry64.S7
-rw-r--r--arch/s390/kernel/ipl.c27
-rw-r--r--arch/s390/kernel/setup.c14
-rw-r--r--arch/s390/kernel/smp.c13
-rw-r--r--arch/s390/kernel/stacktrace.c31
-rw-r--r--arch/s390/kernel/traps.c5
-rw-r--r--arch/s390/kernel/vmlinux.lds.S2
-rw-r--r--arch/s390/mm/init.c27
-rw-r--r--arch/s390/mm/vmem.c5
-rw-r--r--drivers/s390/block/dasd.c19
-rw-r--r--drivers/s390/block/dasd_3990_erp.c62
-rw-r--r--drivers/s390/block/dcssblk.c5
-rw-r--r--drivers/s390/char/sclp_tty.c2
-rw-r--r--drivers/s390/char/sclp_vt220.c2
-rw-r--r--drivers/s390/cio/ccwgroup.c12
-rw-r--r--drivers/s390/cio/chsc.c147
-rw-r--r--drivers/s390/cio/device_id.c107
-rw-r--r--include/asm-s390/bitops.h558
-rw-r--r--include/asm-s390/cacheflush.h4
-rw-r--r--include/asm-s390/ccwgroup.h2
-rw-r--r--include/asm-s390/pgtable.h12
25 files changed, 587 insertions, 520 deletions
diff --git a/Documentation/DocBook/s390-drivers.tmpl b/Documentation/DocBook/s390-drivers.tmpl
index 3d2f31b99dd9..4acc73240a6d 100644
--- a/Documentation/DocBook/s390-drivers.tmpl
+++ b/Documentation/DocBook/s390-drivers.tmpl
@@ -59,7 +59,7 @@
59 <title>Introduction</title> 59 <title>Introduction</title>
60 <para> 60 <para>
61 This document describes the interfaces available for device drivers that 61 This document describes the interfaces available for device drivers that
62 drive s390 based channel attached devices. This includes interfaces for 62 drive s390 based channel attached I/O devices. This includes interfaces for
63 interaction with the hardware and interfaces for interacting with the 63 interaction with the hardware and interfaces for interacting with the
64 common driver core. Those interfaces are provided by the s390 common I/O 64 common driver core. Those interfaces are provided by the s390 common I/O
65 layer. 65 layer.
@@ -86,9 +86,10 @@
86 The ccw bus typically contains the majority of devices available to 86 The ccw bus typically contains the majority of devices available to
87 a s390 system. Named after the channel command word (ccw), the basic 87 a s390 system. Named after the channel command word (ccw), the basic
88 command structure used to address its devices, the ccw bus contains 88 command structure used to address its devices, the ccw bus contains
89 so-called channel attached devices. They are addressed via subchannels, 89 so-called channel attached devices. They are addressed via I/O
90 visible on the css bus. A device driver, however, will never interact 90 subchannels, visible on the css bus. A device driver for
91 with the subchannel directly, but only via the device on the ccw bus, 91 channel-attached devices, however, will never interact with the
92 subchannel directly, but only via the I/O device on the ccw bus,
92 the ccw device. 93 the ccw device.
93 </para> 94 </para>
94 <sect1 id="channelIO"> 95 <sect1 id="channelIO">
@@ -116,7 +117,6 @@
116!Iinclude/asm-s390/ccwdev.h 117!Iinclude/asm-s390/ccwdev.h
117!Edrivers/s390/cio/device.c 118!Edrivers/s390/cio/device.c
118!Edrivers/s390/cio/device_ops.c 119!Edrivers/s390/cio/device_ops.c
119!Edrivers/s390/cio/airq.c
120 </sect1> 120 </sect1>
121 <sect1 id="cmf"> 121 <sect1 id="cmf">
122 <title>The channel-measurement facility</title> 122 <title>The channel-measurement facility</title>
@@ -147,4 +147,15 @@
147 </sect1> 147 </sect1>
148 </chapter> 148 </chapter>
149 149
150 <chapter id="genericinterfaces">
151 <title>Generic interfaces</title>
152 <para>
153 Some interfaces are available to other drivers that do not necessarily
154 have anything to do with the busses described above, but still are
155 indirectly using basic infrastructure in the common I/O layer.
156 One example is the support for adapter interrupts.
157 </para>
158!Edrivers/s390/cio/airq.c
159 </chapter>
160
150</book> 161</book>
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 82cbffd03654..92a4f7b4323a 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -16,6 +16,9 @@ config LOCKDEP_SUPPORT
16config STACKTRACE_SUPPORT 16config STACKTRACE_SUPPORT
17 def_bool y 17 def_bool y
18 18
19config HAVE_LATENCYTOP_SUPPORT
20 def_bool y
21
19config RWSEM_GENERIC_SPINLOCK 22config RWSEM_GENERIC_SPINLOCK
20 bool 23 bool
21 24
@@ -47,6 +50,11 @@ config NO_IOMEM
47config NO_DMA 50config NO_DMA
48 def_bool y 51 def_bool y
49 52
53config GENERIC_LOCKBREAK
54 bool
55 default y
56 depends on SMP && PREEMPT
57
50mainmenu "Linux Kernel Configuration" 58mainmenu "Linux Kernel Configuration"
51 59
52config S390 60config S390
diff --git a/arch/s390/Kconfig.debug b/arch/s390/Kconfig.debug
index 2283933a9a93..4599fa06bd82 100644
--- a/arch/s390/Kconfig.debug
+++ b/arch/s390/Kconfig.debug
@@ -6,4 +6,12 @@ config TRACE_IRQFLAGS_SUPPORT
6 6
7source "lib/Kconfig.debug" 7source "lib/Kconfig.debug"
8 8
9config DEBUG_PAGEALLOC
10 bool "Debug page memory allocations"
11 depends on DEBUG_KERNEL
12 help
13 Unmap pages from the kernel linear mapping after free_pages().
14 This results in a slowdown, but helps to find certain types of
15 memory corruptions.
16
9endmenu 17endmenu
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index 1a6dac8df6fb..6766e37fe8ea 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -11,6 +11,7 @@
11 11
12#include <linux/sys.h> 12#include <linux/sys.h>
13#include <linux/linkage.h> 13#include <linux/linkage.h>
14#include <linux/init.h>
14#include <asm/cache.h> 15#include <asm/cache.h>
15#include <asm/lowcore.h> 16#include <asm/lowcore.h>
16#include <asm/errno.h> 17#include <asm/errno.h>
@@ -830,9 +831,7 @@ mcck_return:
830 * Restart interruption handler, kick starter for additional CPUs 831 * Restart interruption handler, kick starter for additional CPUs
831 */ 832 */
832#ifdef CONFIG_SMP 833#ifdef CONFIG_SMP
833#ifndef CONFIG_HOTPLUG_CPU 834 __CPUINIT
834 .section .init.text,"ax"
835#endif
836 .globl restart_int_handler 835 .globl restart_int_handler
837restart_int_handler: 836restart_int_handler:
838 l %r15,__LC_SAVE_AREA+60 # load ksp 837 l %r15,__LC_SAVE_AREA+60 # load ksp
@@ -845,9 +844,7 @@ restart_int_handler:
845 br %r14 # branch to start_secondary 844 br %r14 # branch to start_secondary
846restart_addr: 845restart_addr:
847 .long start_secondary 846 .long start_secondary
848#ifndef CONFIG_HOTPLUG_CPU
849 .previous 847 .previous
850#endif
851#else 848#else
852/* 849/*
853 * If we do not run with SMP enabled, let the new CPU crash ... 850 * If we do not run with SMP enabled, let the new CPU crash ...
diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S
index a3e47b893f07..efde6e178f6c 100644
--- a/arch/s390/kernel/entry64.S
+++ b/arch/s390/kernel/entry64.S
@@ -11,6 +11,7 @@
11 11
12#include <linux/sys.h> 12#include <linux/sys.h>
13#include <linux/linkage.h> 13#include <linux/linkage.h>
14#include <linux/init.h>
14#include <asm/cache.h> 15#include <asm/cache.h>
15#include <asm/lowcore.h> 16#include <asm/lowcore.h>
16#include <asm/errno.h> 17#include <asm/errno.h>
@@ -801,9 +802,7 @@ mcck_return:
801 * Restart interruption handler, kick starter for additional CPUs 802 * Restart interruption handler, kick starter for additional CPUs
802 */ 803 */
803#ifdef CONFIG_SMP 804#ifdef CONFIG_SMP
804#ifndef CONFIG_HOTPLUG_CPU 805 __CPUINIT
805 .section .init.text,"ax"
806#endif
807 .globl restart_int_handler 806 .globl restart_int_handler
808restart_int_handler: 807restart_int_handler:
809 lg %r15,__LC_SAVE_AREA+120 # load ksp 808 lg %r15,__LC_SAVE_AREA+120 # load ksp
@@ -814,9 +813,7 @@ restart_int_handler:
814 lmg %r6,%r15,__SF_GPRS(%r15) # load registers from clone 813 lmg %r6,%r15,__SF_GPRS(%r15) # load registers from clone
815 stosm __SF_EMPTY(%r15),0x04 # now we can turn dat on 814 stosm __SF_EMPTY(%r15),0x04 # now we can turn dat on
816 jg start_secondary 815 jg start_secondary
817#ifndef CONFIG_HOTPLUG_CPU
818 .previous 816 .previous
819#endif
820#else 817#else
821/* 818/*
822 * If we do not run with SMP enabled, let the new CPU crash ... 819 * If we do not run with SMP enabled, let the new CPU crash ...
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index db28cca81fef..60acdc266db1 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -439,7 +439,7 @@ static void ipl_run(struct shutdown_trigger *trigger)
439 reipl_ccw_dev(&ipl_info.data.ccw.dev_id); 439 reipl_ccw_dev(&ipl_info.data.ccw.dev_id);
440} 440}
441 441
442static int ipl_init(void) 442static int __init ipl_init(void)
443{ 443{
444 int rc; 444 int rc;
445 445
@@ -471,8 +471,11 @@ out:
471 return 0; 471 return 0;
472} 472}
473 473
474static struct shutdown_action ipl_action = {SHUTDOWN_ACTION_IPL_STR, ipl_run, 474static struct shutdown_action __refdata ipl_action = {
475 ipl_init}; 475 .name = SHUTDOWN_ACTION_IPL_STR,
476 .fn = ipl_run,
477 .init = ipl_init,
478};
476 479
477/* 480/*
478 * reipl shutdown action: Reboot Linux on shutdown. 481 * reipl shutdown action: Reboot Linux on shutdown.
@@ -792,7 +795,7 @@ static int __init reipl_fcp_init(void)
792 return 0; 795 return 0;
793} 796}
794 797
795static int reipl_init(void) 798static int __init reipl_init(void)
796{ 799{
797 int rc; 800 int rc;
798 801
@@ -819,8 +822,11 @@ static int reipl_init(void)
819 return 0; 822 return 0;
820} 823}
821 824
822static struct shutdown_action reipl_action = {SHUTDOWN_ACTION_REIPL_STR, 825static struct shutdown_action __refdata reipl_action = {
823 reipl_run, reipl_init}; 826 .name = SHUTDOWN_ACTION_REIPL_STR,
827 .fn = reipl_run,
828 .init = reipl_init,
829};
824 830
825/* 831/*
826 * dump shutdown action: Dump Linux on shutdown. 832 * dump shutdown action: Dump Linux on shutdown.
@@ -998,7 +1004,7 @@ static int __init dump_fcp_init(void)
998 return 0; 1004 return 0;
999} 1005}
1000 1006
1001static int dump_init(void) 1007static int __init dump_init(void)
1002{ 1008{
1003 int rc; 1009 int rc;
1004 1010
@@ -1020,8 +1026,11 @@ static int dump_init(void)
1020 return 0; 1026 return 0;
1021} 1027}
1022 1028
1023static struct shutdown_action dump_action = {SHUTDOWN_ACTION_DUMP_STR, 1029static struct shutdown_action __refdata dump_action = {
1024 dump_run, dump_init}; 1030 .name = SHUTDOWN_ACTION_DUMP_STR,
1031 .fn = dump_run,
1032 .init = dump_init,
1033};
1025 1034
1026/* 1035/*
1027 * vmcmd shutdown action: Trigger vm command on shutdown. 1036 * vmcmd shutdown action: Trigger vm command on shutdown.
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 766c783bd7a7..29ae165d1749 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -77,7 +77,7 @@ unsigned long machine_flags = 0;
77unsigned long elf_hwcap = 0; 77unsigned long elf_hwcap = 0;
78char elf_platform[ELF_PLATFORM_SIZE]; 78char elf_platform[ELF_PLATFORM_SIZE];
79 79
80struct mem_chunk __initdata memory_chunk[MEMORY_CHUNKS]; 80struct mem_chunk __meminitdata memory_chunk[MEMORY_CHUNKS];
81volatile int __cpu_logical_map[NR_CPUS]; /* logical cpu to cpu address */ 81volatile int __cpu_logical_map[NR_CPUS]; /* logical cpu to cpu address */
82static unsigned long __initdata memory_end; 82static unsigned long __initdata memory_end;
83 83
@@ -145,7 +145,7 @@ __setup("condev=", condev_setup);
145 145
146static int __init conmode_setup(char *str) 146static int __init conmode_setup(char *str)
147{ 147{
148#if defined(CONFIG_SCLP_CONSOLE) 148#if defined(CONFIG_SCLP_CONSOLE) || defined(CONFIG_SCLP_VT220_CONSOLE)
149 if (strncmp(str, "hwc", 4) == 0 || strncmp(str, "sclp", 5) == 0) 149 if (strncmp(str, "hwc", 4) == 0 || strncmp(str, "sclp", 5) == 0)
150 SET_CONSOLE_SCLP; 150 SET_CONSOLE_SCLP;
151#endif 151#endif
@@ -183,7 +183,7 @@ static void __init conmode_default(void)
183 */ 183 */
184 cpcmd("TERM CONMODE 3215", NULL, 0, NULL); 184 cpcmd("TERM CONMODE 3215", NULL, 0, NULL);
185 if (ptr == NULL) { 185 if (ptr == NULL) {
186#if defined(CONFIG_SCLP_CONSOLE) 186#if defined(CONFIG_SCLP_CONSOLE) || defined(CONFIG_SCLP_VT220_CONSOLE)
187 SET_CONSOLE_SCLP; 187 SET_CONSOLE_SCLP;
188#endif 188#endif
189 return; 189 return;
@@ -193,7 +193,7 @@ static void __init conmode_default(void)
193 SET_CONSOLE_3270; 193 SET_CONSOLE_3270;
194#elif defined(CONFIG_TN3215_CONSOLE) 194#elif defined(CONFIG_TN3215_CONSOLE)
195 SET_CONSOLE_3215; 195 SET_CONSOLE_3215;
196#elif defined(CONFIG_SCLP_CONSOLE) 196#elif defined(CONFIG_SCLP_CONSOLE) || defined(CONFIG_SCLP_VT220_CONSOLE)
197 SET_CONSOLE_SCLP; 197 SET_CONSOLE_SCLP;
198#endif 198#endif
199 } else if (strncmp(ptr + 8, "3215", 4) == 0) { 199 } else if (strncmp(ptr + 8, "3215", 4) == 0) {
@@ -201,7 +201,7 @@ static void __init conmode_default(void)
201 SET_CONSOLE_3215; 201 SET_CONSOLE_3215;
202#elif defined(CONFIG_TN3270_CONSOLE) 202#elif defined(CONFIG_TN3270_CONSOLE)
203 SET_CONSOLE_3270; 203 SET_CONSOLE_3270;
204#elif defined(CONFIG_SCLP_CONSOLE) 204#elif defined(CONFIG_SCLP_CONSOLE) || defined(CONFIG_SCLP_VT220_CONSOLE)
205 SET_CONSOLE_SCLP; 205 SET_CONSOLE_SCLP;
206#endif 206#endif
207 } 207 }
@@ -212,7 +212,7 @@ static void __init conmode_default(void)
212 SET_CONSOLE_3270; 212 SET_CONSOLE_3270;
213#endif 213#endif
214 } else { 214 } else {
215#if defined(CONFIG_SCLP_CONSOLE) 215#if defined(CONFIG_SCLP_CONSOLE) || defined(CONFIG_SCLP_VT220_CONSOLE)
216 SET_CONSOLE_SCLP; 216 SET_CONSOLE_SCLP;
217#endif 217#endif
218 } 218 }
@@ -528,7 +528,7 @@ static void __init setup_memory_end(void)
528 memory_size = 0; 528 memory_size = 0;
529 memory_end &= PAGE_MASK; 529 memory_end &= PAGE_MASK;
530 530
531 max_mem = memory_end ? min(VMALLOC_START, memory_end) : VMALLOC_START; 531 max_mem = memory_end ? min(VMEM_MAX_PHYS, memory_end) : VMEM_MAX_PHYS;
532 memory_end = min(max_mem, memory_end); 532 memory_end = min(max_mem, memory_end);
533 533
534 /* 534 /*
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index aa37fa154512..85060659fb12 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -225,12 +225,11 @@ EXPORT_SYMBOL(smp_call_function_single);
225 * You must not call this function with disabled interrupts or from a 225 * You must not call this function with disabled interrupts or from a
226 * hardware interrupt handler or from a bottom half handler. 226 * hardware interrupt handler or from a bottom half handler.
227 */ 227 */
228int 228int smp_call_function_mask(cpumask_t mask, void (*func)(void *), void *info,
229smp_call_function_mask(cpumask_t mask, 229 int wait)
230 void (*func)(void *), void *info,
231 int wait)
232{ 230{
233 preempt_disable(); 231 preempt_disable();
232 cpu_clear(smp_processor_id(), mask);
234 __smp_call_function_map(func, info, 0, wait, mask); 233 __smp_call_function_map(func, info, 0, wait, mask);
235 preempt_enable(); 234 preempt_enable();
236 return 0; 235 return 0;
@@ -1008,7 +1007,7 @@ static struct notifier_block __cpuinitdata smp_cpu_nb = {
1008 .notifier_call = smp_cpu_notify, 1007 .notifier_call = smp_cpu_notify,
1009}; 1008};
1010 1009
1011static int smp_add_present_cpu(int cpu) 1010static int __devinit smp_add_present_cpu(int cpu)
1012{ 1011{
1013 struct cpu *c = &per_cpu(cpu_devices, cpu); 1012 struct cpu *c = &per_cpu(cpu_devices, cpu);
1014 struct sys_device *s = &c->sysdev; 1013 struct sys_device *s = &c->sysdev;
@@ -1036,8 +1035,8 @@ out:
1036} 1035}
1037 1036
1038#ifdef CONFIG_HOTPLUG_CPU 1037#ifdef CONFIG_HOTPLUG_CPU
1039static ssize_t rescan_store(struct sys_device *dev, const char *buf, 1038static ssize_t __ref rescan_store(struct sys_device *dev,
1040 size_t count) 1039 const char *buf, size_t count)
1041{ 1040{
1042 cpumask_t newcpus; 1041 cpumask_t newcpus;
1043 int cpu; 1042 int cpu;
diff --git a/arch/s390/kernel/stacktrace.c b/arch/s390/kernel/stacktrace.c
index da6924729964..85e46a5d0e08 100644
--- a/arch/s390/kernel/stacktrace.c
+++ b/arch/s390/kernel/stacktrace.c
@@ -14,7 +14,8 @@
14static unsigned long save_context_stack(struct stack_trace *trace, 14static unsigned long save_context_stack(struct stack_trace *trace,
15 unsigned long sp, 15 unsigned long sp,
16 unsigned long low, 16 unsigned long low,
17 unsigned long high) 17 unsigned long high,
18 int savesched)
18{ 19{
19 struct stack_frame *sf; 20 struct stack_frame *sf;
20 struct pt_regs *regs; 21 struct pt_regs *regs;
@@ -47,10 +48,12 @@ static unsigned long save_context_stack(struct stack_trace *trace,
47 return sp; 48 return sp;
48 regs = (struct pt_regs *)sp; 49 regs = (struct pt_regs *)sp;
49 addr = regs->psw.addr & PSW_ADDR_INSN; 50 addr = regs->psw.addr & PSW_ADDR_INSN;
50 if (!trace->skip) 51 if (savesched || !in_sched_functions(addr)) {
51 trace->entries[trace->nr_entries++] = addr; 52 if (!trace->skip)
52 else 53 trace->entries[trace->nr_entries++] = addr;
53 trace->skip--; 54 else
55 trace->skip--;
56 }
54 if (trace->nr_entries >= trace->max_entries) 57 if (trace->nr_entries >= trace->max_entries)
55 return sp; 58 return sp;
56 low = sp; 59 low = sp;
@@ -66,15 +69,27 @@ void save_stack_trace(struct stack_trace *trace)
66 orig_sp = sp & PSW_ADDR_INSN; 69 orig_sp = sp & PSW_ADDR_INSN;
67 new_sp = save_context_stack(trace, orig_sp, 70 new_sp = save_context_stack(trace, orig_sp,
68 S390_lowcore.panic_stack - PAGE_SIZE, 71 S390_lowcore.panic_stack - PAGE_SIZE,
69 S390_lowcore.panic_stack); 72 S390_lowcore.panic_stack, 1);
70 if (new_sp != orig_sp) 73 if (new_sp != orig_sp)
71 return; 74 return;
72 new_sp = save_context_stack(trace, new_sp, 75 new_sp = save_context_stack(trace, new_sp,
73 S390_lowcore.async_stack - ASYNC_SIZE, 76 S390_lowcore.async_stack - ASYNC_SIZE,
74 S390_lowcore.async_stack); 77 S390_lowcore.async_stack, 1);
75 if (new_sp != orig_sp) 78 if (new_sp != orig_sp)
76 return; 79 return;
77 save_context_stack(trace, new_sp, 80 save_context_stack(trace, new_sp,
78 S390_lowcore.thread_info, 81 S390_lowcore.thread_info,
79 S390_lowcore.thread_info + THREAD_SIZE); 82 S390_lowcore.thread_info + THREAD_SIZE, 1);
83}
84
85void save_stack_trace_tsk(struct task_struct *tsk, struct stack_trace *trace)
86{
87 unsigned long sp, low, high;
88
89 sp = tsk->thread.ksp & PSW_ADDR_INSN;
90 low = (unsigned long) task_stack_page(tsk);
91 high = (unsigned long) task_pt_regs(tsk);
92 save_context_stack(trace, sp, low, high, 0);
93 if (trace->nr_entries < trace->max_entries)
94 trace->entries[trace->nr_entries++] = ULONG_MAX;
80} 95}
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index 52b8342c6bf2..1a2fdb6991df 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -271,7 +271,10 @@ void die(const char * str, struct pt_regs * regs, long err)
271 printk("PREEMPT "); 271 printk("PREEMPT ");
272#endif 272#endif
273#ifdef CONFIG_SMP 273#ifdef CONFIG_SMP
274 printk("SMP"); 274 printk("SMP ");
275#endif
276#ifdef CONFIG_DEBUG_PAGEALLOC
277 printk("DEBUG_PAGEALLOC");
275#endif 278#endif
276 printk("\n"); 279 printk("\n");
277 notify_die(DIE_OOPS, str, regs, err, current->thread.trap_no, SIGSEGV); 280 notify_die(DIE_OOPS, str, regs, err, current->thread.trap_no, SIGSEGV);
diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S
index 7d43c3cd3ef3..b4607155e8d0 100644
--- a/arch/s390/kernel/vmlinux.lds.S
+++ b/arch/s390/kernel/vmlinux.lds.S
@@ -35,7 +35,7 @@ SECTIONS
35 KPROBES_TEXT 35 KPROBES_TEXT
36 *(.fixup) 36 *(.fixup)
37 *(.gnu.warning) 37 *(.gnu.warning)
38 } = 0x0700 38 } :text = 0x0700
39 39
40 _etext = .; /* End of text section */ 40 _etext = .; /* End of text section */
41 41
diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c
index b234bb4a6da7..983ec6ec0e7c 100644
--- a/arch/s390/mm/init.c
+++ b/arch/s390/mm/init.c
@@ -167,6 +167,33 @@ void __init mem_init(void)
167 PFN_ALIGN((unsigned long)&_eshared) - 1); 167 PFN_ALIGN((unsigned long)&_eshared) - 1);
168} 168}
169 169
170#ifdef CONFIG_DEBUG_PAGEALLOC
171void kernel_map_pages(struct page *page, int numpages, int enable)
172{
173 pgd_t *pgd;
174 pud_t *pud;
175 pmd_t *pmd;
176 pte_t *pte;
177 unsigned long address;
178 int i;
179
180 for (i = 0; i < numpages; i++) {
181 address = page_to_phys(page + i);
182 pgd = pgd_offset_k(address);
183 pud = pud_offset(pgd, address);
184 pmd = pmd_offset(pud, address);
185 pte = pte_offset_kernel(pmd, address);
186 if (!enable) {
187 ptep_invalidate(address, pte);
188 continue;
189 }
190 *pte = mk_pte_phys(address, __pgprot(_PAGE_TYPE_RW));
191 /* Flush cpu write queue. */
192 mb();
193 }
194}
195#endif
196
170void free_initmem(void) 197void free_initmem(void)
171{ 198{
172 unsigned long addr; 199 unsigned long addr;
diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c
index 79d13a166a3d..7c1287ccf788 100644
--- a/arch/s390/mm/vmem.c
+++ b/arch/s390/mm/vmem.c
@@ -62,7 +62,7 @@ void __meminit memmap_init(unsigned long size, int nid, unsigned long zone,
62 } 62 }
63} 63}
64 64
65static void __init_refok *vmem_alloc_pages(unsigned int order) 65static void __ref *vmem_alloc_pages(unsigned int order)
66{ 66{
67 if (slab_is_available()) 67 if (slab_is_available())
68 return (void *)__get_free_pages(GFP_KERNEL, order); 68 return (void *)__get_free_pages(GFP_KERNEL, order);
@@ -250,7 +250,7 @@ static int insert_memory_segment(struct memory_segment *seg)
250{ 250{
251 struct memory_segment *tmp; 251 struct memory_segment *tmp;
252 252
253 if (seg->start + seg->size >= VMALLOC_START || 253 if (seg->start + seg->size >= VMEM_MAX_PHYS ||
254 seg->start + seg->size < seg->start) 254 seg->start + seg->size < seg->start)
255 return -ERANGE; 255 return -ERANGE;
256 256
@@ -360,7 +360,6 @@ void __init vmem_map_init(void)
360{ 360{
361 int i; 361 int i;
362 362
363 BUILD_BUG_ON((unsigned long)VMEM_MAP + VMEM_MAP_SIZE > VMEM_MAP_MAX);
364 NODE_DATA(0)->node_mem_map = VMEM_MAP; 363 NODE_DATA(0)->node_mem_map = VMEM_MAP;
365 for (i = 0; i < MEMORY_CHUNKS && memory_chunk[i].size > 0; i++) 364 for (i = 0; i < MEMORY_CHUNKS && memory_chunk[i].size > 0; i++)
366 vmem_add_mem(memory_chunk[i].addr, memory_chunk[i].size); 365 vmem_add_mem(memory_chunk[i].addr, memory_chunk[i].size);
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index d640427c74c8..d984e0fae630 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -1057,12 +1057,11 @@ void dasd_int_handler(struct ccw_device *cdev, unsigned long intparm,
1057 if (device->features & DASD_FEATURE_ERPLOG) { 1057 if (device->features & DASD_FEATURE_ERPLOG) {
1058 dasd_log_sense(cqr, irb); 1058 dasd_log_sense(cqr, irb);
1059 } 1059 }
1060 /* If we have no sense data, or we just don't want complex ERP 1060 /*
1061 * for this request, but if we have retries left, then just 1061 * If we don't want complex ERP for this request, then just
1062 * reset this request and retry it in the fastpath 1062 * reset this and retry it in the fastpath
1063 */ 1063 */
1064 if (!(cqr->irb.esw.esw0.erw.cons && 1064 if (!test_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags) &&
1065 test_bit(DASD_CQR_FLAGS_USE_ERP, &cqr->flags)) &&
1066 cqr->retries > 0) { 1065 cqr->retries > 0) {
1067 DEV_MESSAGE(KERN_DEBUG, device, 1066 DEV_MESSAGE(KERN_DEBUG, device,
1068 "default ERP in fastpath (%i retries left)", 1067 "default ERP in fastpath (%i retries left)",
@@ -1707,7 +1706,7 @@ static void __dasd_cleanup_cqr(struct dasd_ccw_req *cqr)
1707 1706
1708 req = (struct request *) cqr->callback_data; 1707 req = (struct request *) cqr->callback_data;
1709 dasd_profile_end(cqr->block, cqr, req); 1708 dasd_profile_end(cqr->block, cqr, req);
1710 status = cqr->memdev->discipline->free_cp(cqr, req); 1709 status = cqr->block->base->discipline->free_cp(cqr, req);
1711 if (status <= 0) 1710 if (status <= 0)
1712 error = status ? status : -EIO; 1711 error = status ? status : -EIO;
1713 dasd_end_request(req, error); 1712 dasd_end_request(req, error);
@@ -1742,12 +1741,8 @@ restart:
1742 1741
1743 /* Process requests that may be recovered */ 1742 /* Process requests that may be recovered */
1744 if (cqr->status == DASD_CQR_NEED_ERP) { 1743 if (cqr->status == DASD_CQR_NEED_ERP) {
1745 if (cqr->irb.esw.esw0.erw.cons && 1744 erp_fn = base->discipline->erp_action(cqr);
1746 test_bit(DASD_CQR_FLAGS_USE_ERP, 1745 erp_fn(cqr);
1747 &cqr->flags)) {
1748 erp_fn = base->discipline->erp_action(cqr);
1749 erp_fn(cqr);
1750 }
1751 goto restart; 1746 goto restart;
1752 } 1747 }
1753 1748
diff --git a/drivers/s390/block/dasd_3990_erp.c b/drivers/s390/block/dasd_3990_erp.c
index c361ab69ec00..f69714a0e9e7 100644
--- a/drivers/s390/block/dasd_3990_erp.c
+++ b/drivers/s390/block/dasd_3990_erp.c
@@ -164,7 +164,7 @@ dasd_3990_erp_alternate_path(struct dasd_ccw_req * erp)
164 164
165 /* reset status to submit the request again... */ 165 /* reset status to submit the request again... */
166 erp->status = DASD_CQR_FILLED; 166 erp->status = DASD_CQR_FILLED;
167 erp->retries = 1; 167 erp->retries = 10;
168 } else { 168 } else {
169 DEV_MESSAGE(KERN_ERR, device, 169 DEV_MESSAGE(KERN_ERR, device,
170 "No alternate channel path left (lpum=%x / " 170 "No alternate channel path left (lpum=%x / "
@@ -301,8 +301,7 @@ dasd_3990_erp_action_4(struct dasd_ccw_req * erp, char *sense)
301 erp->function = dasd_3990_erp_action_4; 301 erp->function = dasd_3990_erp_action_4;
302 302
303 } else { 303 } else {
304 304 if (sense && (sense[25] == 0x1D)) { /* state change pending */
305 if (sense[25] == 0x1D) { /* state change pending */
306 305
307 DEV_MESSAGE(KERN_INFO, device, 306 DEV_MESSAGE(KERN_INFO, device,
308 "waiting for state change pending " 307 "waiting for state change pending "
@@ -311,7 +310,7 @@ dasd_3990_erp_action_4(struct dasd_ccw_req * erp, char *sense)
311 310
312 dasd_3990_erp_block_queue(erp, 30*HZ); 311 dasd_3990_erp_block_queue(erp, 30*HZ);
313 312
314 } else if (sense[25] == 0x1E) { /* busy */ 313 } else if (sense && (sense[25] == 0x1E)) { /* busy */
315 DEV_MESSAGE(KERN_INFO, device, 314 DEV_MESSAGE(KERN_INFO, device,
316 "busy - redriving request later, " 315 "busy - redriving request later, "
317 "%d retries left", 316 "%d retries left",
@@ -2120,6 +2119,34 @@ dasd_3990_erp_inspect_32(struct dasd_ccw_req * erp, char *sense)
2120 */ 2119 */
2121 2120
2122/* 2121/*
2122 * DASD_3990_ERP_CONTROL_CHECK
2123 *
2124 * DESCRIPTION
2125 * Does a generic inspection if a control check occured and sets up
2126 * the related error recovery procedure
2127 *
2128 * PARAMETER
2129 * erp pointer to the currently created default ERP
2130 *
2131 * RETURN VALUES
2132 * erp_filled pointer to the erp
2133 */
2134
2135static struct dasd_ccw_req *
2136dasd_3990_erp_control_check(struct dasd_ccw_req *erp)
2137{
2138 struct dasd_device *device = erp->startdev;
2139
2140 if (erp->refers->irb.scsw.cstat & (SCHN_STAT_INTF_CTRL_CHK
2141 | SCHN_STAT_CHN_CTRL_CHK)) {
2142 DEV_MESSAGE(KERN_DEBUG, device, "%s",
2143 "channel or interface control check");
2144 erp = dasd_3990_erp_action_4(erp, NULL);
2145 }
2146 return erp;
2147}
2148
2149/*
2123 * DASD_3990_ERP_INSPECT 2150 * DASD_3990_ERP_INSPECT
2124 * 2151 *
2125 * DESCRIPTION 2152 * DESCRIPTION
@@ -2145,8 +2172,11 @@ dasd_3990_erp_inspect(struct dasd_ccw_req * erp)
2145 if (erp_new) 2172 if (erp_new)
2146 return erp_new; 2173 return erp_new;
2147 2174
2175 /* check if no concurrent sens is available */
2176 if (!erp->refers->irb.esw.esw0.erw.cons)
2177 erp_new = dasd_3990_erp_control_check(erp);
2148 /* distinguish between 24 and 32 byte sense data */ 2178 /* distinguish between 24 and 32 byte sense data */
2149 if (sense[27] & DASD_SENSE_BIT_0) { 2179 else if (sense[27] & DASD_SENSE_BIT_0) {
2150 2180
2151 /* inspect the 24 byte sense data */ 2181 /* inspect the 24 byte sense data */
2152 erp_new = dasd_3990_erp_inspect_24(erp, sense); 2182 erp_new = dasd_3990_erp_inspect_24(erp, sense);
@@ -2285,6 +2315,17 @@ dasd_3990_erp_error_match(struct dasd_ccw_req *cqr1, struct dasd_ccw_req *cqr2)
2285 // return 0; /* CCW doesn't match */ 2315 // return 0; /* CCW doesn't match */
2286 } 2316 }
2287 2317
2318 if (cqr1->irb.esw.esw0.erw.cons != cqr2->irb.esw.esw0.erw.cons)
2319 return 0;
2320
2321 if ((cqr1->irb.esw.esw0.erw.cons == 0) &&
2322 (cqr2->irb.esw.esw0.erw.cons == 0)) {
2323 if ((cqr1->irb.scsw.cstat & (SCHN_STAT_INTF_CTRL_CHK |
2324 SCHN_STAT_CHN_CTRL_CHK)) ==
2325 (cqr2->irb.scsw.cstat & (SCHN_STAT_INTF_CTRL_CHK |
2326 SCHN_STAT_CHN_CTRL_CHK)))
2327 return 1; /* match with ifcc*/
2328 }
2288 /* check sense data; byte 0-2,25,27 */ 2329 /* check sense data; byte 0-2,25,27 */
2289 if (!((memcmp (cqr1->irb.ecw, cqr2->irb.ecw, 3) == 0) && 2330 if (!((memcmp (cqr1->irb.ecw, cqr2->irb.ecw, 3) == 0) &&
2290 (cqr1->irb.ecw[27] == cqr2->irb.ecw[27]) && 2331 (cqr1->irb.ecw[27] == cqr2->irb.ecw[27]) &&
@@ -2560,17 +2601,6 @@ dasd_3990_erp_action(struct dasd_ccw_req * cqr)
2560 2601
2561 return cqr; 2602 return cqr;
2562 } 2603 }
2563 /* check if sense data are available */
2564 if (!cqr->irb.ecw) {
2565 DEV_MESSAGE(KERN_DEBUG, device,
2566 "ERP called witout sense data avail ..."
2567 "request %p - NO ERP possible", cqr);
2568
2569 cqr->status = DASD_CQR_FAILED;
2570
2571 return cqr;
2572
2573 }
2574 2604
2575 /* check if error happened before */ 2605 /* check if error happened before */
2576 erp = dasd_3990_erp_in_erp(cqr); 2606 erp = dasd_3990_erp_in_erp(cqr);
diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c
index 7779bfce1c31..3faf0538b328 100644
--- a/drivers/s390/block/dcssblk.c
+++ b/drivers/s390/block/dcssblk.c
@@ -415,6 +415,8 @@ dcssblk_add_store(struct device *dev, struct device_attribute *attr, const char
415 dev_info->gd->queue = dev_info->dcssblk_queue; 415 dev_info->gd->queue = dev_info->dcssblk_queue;
416 dev_info->gd->private_data = dev_info; 416 dev_info->gd->private_data = dev_info;
417 dev_info->gd->driverfs_dev = &dev_info->dev; 417 dev_info->gd->driverfs_dev = &dev_info->dev;
418 blk_queue_make_request(dev_info->dcssblk_queue, dcssblk_make_request);
419 blk_queue_hardsect_size(dev_info->dcssblk_queue, 4096);
418 /* 420 /*
419 * load the segment 421 * load the segment
420 */ 422 */
@@ -472,9 +474,6 @@ dcssblk_add_store(struct device *dev, struct device_attribute *attr, const char
472 if (rc) 474 if (rc)
473 goto unregister_dev; 475 goto unregister_dev;
474 476
475 blk_queue_make_request(dev_info->dcssblk_queue, dcssblk_make_request);
476 blk_queue_hardsect_size(dev_info->dcssblk_queue, 4096);
477
478 add_disk(dev_info->gd); 477 add_disk(dev_info->gd);
479 478
480 switch (dev_info->segment_type) { 479 switch (dev_info->segment_type) {
diff --git a/drivers/s390/char/sclp_tty.c b/drivers/s390/char/sclp_tty.c
index e3b3d390b4a3..2e616e33891d 100644
--- a/drivers/s390/char/sclp_tty.c
+++ b/drivers/s390/char/sclp_tty.c
@@ -332,7 +332,7 @@ sclp_tty_write_string(const unsigned char *str, int count)
332 if (sclp_ttybuf == NULL) { 332 if (sclp_ttybuf == NULL) {
333 while (list_empty(&sclp_tty_pages)) { 333 while (list_empty(&sclp_tty_pages)) {
334 spin_unlock_irqrestore(&sclp_tty_lock, flags); 334 spin_unlock_irqrestore(&sclp_tty_lock, flags);
335 if (in_interrupt()) 335 if (in_atomic())
336 sclp_sync_wait(); 336 sclp_sync_wait();
337 else 337 else
338 wait_event(sclp_tty_waitq, 338 wait_event(sclp_tty_waitq,
diff --git a/drivers/s390/char/sclp_vt220.c b/drivers/s390/char/sclp_vt220.c
index 40cd21bc5cc4..68071622d4bb 100644
--- a/drivers/s390/char/sclp_vt220.c
+++ b/drivers/s390/char/sclp_vt220.c
@@ -400,7 +400,7 @@ __sclp_vt220_write(const unsigned char *buf, int count, int do_schedule,
400 while (list_empty(&sclp_vt220_empty)) { 400 while (list_empty(&sclp_vt220_empty)) {
401 spin_unlock_irqrestore(&sclp_vt220_lock, 401 spin_unlock_irqrestore(&sclp_vt220_lock,
402 flags); 402 flags);
403 if (in_interrupt()) 403 if (in_atomic())
404 sclp_sync_wait(); 404 sclp_sync_wait();
405 else 405 else
406 wait_event(sclp_vt220_waitq, 406 wait_event(sclp_vt220_waitq,
diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c
index 3964056a9a47..03914fa81174 100644
--- a/drivers/s390/cio/ccwgroup.c
+++ b/drivers/s390/cio/ccwgroup.c
@@ -391,12 +391,24 @@ ccwgroup_remove (struct device *dev)
391 return 0; 391 return 0;
392} 392}
393 393
394static void ccwgroup_shutdown(struct device *dev)
395{
396 struct ccwgroup_device *gdev;
397 struct ccwgroup_driver *gdrv;
398
399 gdev = to_ccwgroupdev(dev);
400 gdrv = to_ccwgroupdrv(dev->driver);
401 if (gdrv && gdrv->shutdown)
402 gdrv->shutdown(gdev);
403}
404
394static struct bus_type ccwgroup_bus_type = { 405static struct bus_type ccwgroup_bus_type = {
395 .name = "ccwgroup", 406 .name = "ccwgroup",
396 .match = ccwgroup_bus_match, 407 .match = ccwgroup_bus_match,
397 .uevent = ccwgroup_uevent, 408 .uevent = ccwgroup_uevent,
398 .probe = ccwgroup_probe, 409 .probe = ccwgroup_probe,
399 .remove = ccwgroup_remove, 410 .remove = ccwgroup_remove,
411 .shutdown = ccwgroup_shutdown,
400}; 412};
401 413
402/** 414/**
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
index e7ba16a74ef7..007aaeb4f532 100644
--- a/drivers/s390/cio/chsc.c
+++ b/drivers/s390/cio/chsc.c
@@ -26,6 +26,25 @@
26 26
27static void *sei_page; 27static void *sei_page;
28 28
29static int chsc_error_from_response(int response)
30{
31 switch (response) {
32 case 0x0001:
33 return 0;
34 case 0x0002:
35 case 0x0003:
36 case 0x0006:
37 case 0x0007:
38 case 0x0008:
39 case 0x000a:
40 return -EINVAL;
41 case 0x0004:
42 return -EOPNOTSUPP;
43 default:
44 return -EIO;
45 }
46}
47
29struct chsc_ssd_area { 48struct chsc_ssd_area {
30 struct chsc_header request; 49 struct chsc_header request;
31 u16 :10; 50 u16 :10;
@@ -75,11 +94,11 @@ int chsc_get_ssd_info(struct subchannel_id schid, struct chsc_ssd_info *ssd)
75 ret = (ccode == 3) ? -ENODEV : -EBUSY; 94 ret = (ccode == 3) ? -ENODEV : -EBUSY;
76 goto out_free; 95 goto out_free;
77 } 96 }
78 if (ssd_area->response.code != 0x0001) { 97 ret = chsc_error_from_response(ssd_area->response.code);
98 if (ret != 0) {
79 CIO_MSG_EVENT(2, "chsc: ssd failed for 0.%x.%04x (rc=%04x)\n", 99 CIO_MSG_EVENT(2, "chsc: ssd failed for 0.%x.%04x (rc=%04x)\n",
80 schid.ssid, schid.sch_no, 100 schid.ssid, schid.sch_no,
81 ssd_area->response.code); 101 ssd_area->response.code);
82 ret = -EIO;
83 goto out_free; 102 goto out_free;
84 } 103 }
85 if (!ssd_area->sch_valid) { 104 if (!ssd_area->sch_valid) {
@@ -717,36 +736,15 @@ __chsc_do_secm(struct channel_subsystem *css, int enable, void *page)
717 return (ccode == 3) ? -ENODEV : -EBUSY; 736 return (ccode == 3) ? -ENODEV : -EBUSY;
718 737
719 switch (secm_area->response.code) { 738 switch (secm_area->response.code) {
720 case 0x0001: /* Success. */ 739 case 0x0102:
721 ret = 0; 740 case 0x0103:
722 break;
723 case 0x0003: /* Invalid block. */
724 case 0x0007: /* Invalid format. */
725 case 0x0008: /* Other invalid block. */
726 CIO_CRW_EVENT(2, "Error in chsc request block!\n");
727 ret = -EINVAL;
728 break;
729 case 0x0004: /* Command not provided in model. */
730 CIO_CRW_EVENT(2, "Model does not provide secm\n");
731 ret = -EOPNOTSUPP;
732 break;
733 case 0x0102: /* cub adresses incorrect */
734 CIO_CRW_EVENT(2, "Invalid addresses in chsc request block\n");
735 ret = -EINVAL;
736 break;
737 case 0x0103: /* key error */
738 CIO_CRW_EVENT(2, "Access key error in secm\n");
739 ret = -EINVAL; 741 ret = -EINVAL;
740 break;
741 case 0x0105: /* error while starting */
742 CIO_CRW_EVENT(2, "Error while starting channel measurement\n");
743 ret = -EIO;
744 break;
745 default: 742 default:
746 CIO_CRW_EVENT(2, "Unknown CHSC response %d\n", 743 ret = chsc_error_from_response(secm_area->response.code);
747 secm_area->response.code);
748 ret = -EIO;
749 } 744 }
745 if (ret != 0)
746 CIO_CRW_EVENT(2, "chsc: secm failed (rc=%04x)\n",
747 secm_area->response.code);
750 return ret; 748 return ret;
751} 749}
752 750
@@ -827,27 +825,14 @@ int chsc_determine_channel_path_description(struct chp_id chpid,
827 goto out; 825 goto out;
828 } 826 }
829 827
830 switch (scpd_area->response.code) { 828 ret = chsc_error_from_response(scpd_area->response.code);
831 case 0x0001: /* Success. */ 829 if (ret == 0)
830 /* Success. */
832 memcpy(desc, &scpd_area->desc, 831 memcpy(desc, &scpd_area->desc,
833 sizeof(struct channel_path_desc)); 832 sizeof(struct channel_path_desc));
834 ret = 0; 833 else
835 break; 834 CIO_CRW_EVENT(2, "chsc: scpd failed (rc=%04x)\n",
836 case 0x0003: /* Invalid block. */
837 case 0x0007: /* Invalid format. */
838 case 0x0008: /* Other invalid block. */
839 CIO_CRW_EVENT(2, "Error in chsc request block!\n");
840 ret = -EINVAL;
841 break;
842 case 0x0004: /* Command not provided in model. */
843 CIO_CRW_EVENT(2, "Model does not provide scpd\n");
844 ret = -EOPNOTSUPP;
845 break;
846 default:
847 CIO_CRW_EVENT(2, "Unknown CHSC response %d\n",
848 scpd_area->response.code); 835 scpd_area->response.code);
849 ret = -EIO;
850 }
851out: 836out:
852 free_page((unsigned long)scpd_area); 837 free_page((unsigned long)scpd_area);
853 return ret; 838 return ret;
@@ -923,8 +908,9 @@ int chsc_get_channel_measurement_chars(struct channel_path *chp)
923 goto out; 908 goto out;
924 } 909 }
925 910
926 switch (scmc_area->response.code) { 911 ret = chsc_error_from_response(scmc_area->response.code);
927 case 0x0001: /* Success. */ 912 if (ret == 0) {
913 /* Success. */
928 if (!scmc_area->not_valid) { 914 if (!scmc_area->not_valid) {
929 chp->cmg = scmc_area->cmg; 915 chp->cmg = scmc_area->cmg;
930 chp->shared = scmc_area->shared; 916 chp->shared = scmc_area->shared;
@@ -935,22 +921,9 @@ int chsc_get_channel_measurement_chars(struct channel_path *chp)
935 chp->cmg = -1; 921 chp->cmg = -1;
936 chp->shared = -1; 922 chp->shared = -1;
937 } 923 }
938 ret = 0; 924 } else {
939 break; 925 CIO_CRW_EVENT(2, "chsc: scmc failed (rc=%04x)\n",
940 case 0x0003: /* Invalid block. */
941 case 0x0007: /* Invalid format. */
942 case 0x0008: /* Invalid bit combination. */
943 CIO_CRW_EVENT(2, "Error in chsc request block!\n");
944 ret = -EINVAL;
945 break;
946 case 0x0004: /* Command not provided. */
947 CIO_CRW_EVENT(2, "Model does not provide scmc\n");
948 ret = -EOPNOTSUPP;
949 break;
950 default:
951 CIO_CRW_EVENT(2, "Unknown CHSC response %d\n",
952 scmc_area->response.code); 926 scmc_area->response.code);
953 ret = -EIO;
954 } 927 }
955out: 928out:
956 free_page((unsigned long)scmc_area); 929 free_page((unsigned long)scmc_area);
@@ -1002,21 +975,17 @@ chsc_enable_facility(int operation_code)
1002 ret = (ret == 3) ? -ENODEV : -EBUSY; 975 ret = (ret == 3) ? -ENODEV : -EBUSY;
1003 goto out; 976 goto out;
1004 } 977 }
978
1005 switch (sda_area->response.code) { 979 switch (sda_area->response.code) {
1006 case 0x0001: /* everything ok */ 980 case 0x0101:
1007 ret = 0;
1008 break;
1009 case 0x0003: /* invalid request block */
1010 case 0x0007:
1011 ret = -EINVAL;
1012 break;
1013 case 0x0004: /* command not provided */
1014 case 0x0101: /* facility not provided */
1015 ret = -EOPNOTSUPP; 981 ret = -EOPNOTSUPP;
1016 break; 982 break;
1017 default: /* something went wrong */ 983 default:
1018 ret = -EIO; 984 ret = chsc_error_from_response(sda_area->response.code);
1019 } 985 }
986 if (ret != 0)
987 CIO_CRW_EVENT(2, "chsc: sda (oc=%x) failed (rc=%04x)\n",
988 operation_code, sda_area->response.code);
1020 out: 989 out:
1021 free_page((unsigned long)sda_area); 990 free_page((unsigned long)sda_area);
1022 return ret; 991 return ret;
@@ -1041,33 +1010,27 @@ chsc_determine_css_characteristics(void)
1041 } __attribute__ ((packed)) *scsc_area; 1010 } __attribute__ ((packed)) *scsc_area;
1042 1011
1043 scsc_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA); 1012 scsc_area = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
1044 if (!scsc_area) { 1013 if (!scsc_area)
1045 CIO_MSG_EVENT(0, "Was not able to determine available "
1046 "CHSCs due to no memory.\n");
1047 return -ENOMEM; 1014 return -ENOMEM;
1048 }
1049 1015
1050 scsc_area->request.length = 0x0010; 1016 scsc_area->request.length = 0x0010;
1051 scsc_area->request.code = 0x0010; 1017 scsc_area->request.code = 0x0010;
1052 1018
1053 result = chsc(scsc_area); 1019 result = chsc(scsc_area);
1054 if (result) { 1020 if (result) {
1055 CIO_MSG_EVENT(0, "Was not able to determine available CHSCs, " 1021 result = (result == 3) ? -ENODEV : -EBUSY;
1056 "cc=%i.\n", result);
1057 result = -EIO;
1058 goto exit; 1022 goto exit;
1059 } 1023 }
1060 1024
1061 if (scsc_area->response.code != 1) { 1025 result = chsc_error_from_response(scsc_area->response.code);
1062 CIO_MSG_EVENT(0, "Was not able to determine " 1026 if (result == 0) {
1063 "available CHSCs.\n"); 1027 memcpy(&css_general_characteristics, scsc_area->general_char,
1064 result = -EIO; 1028 sizeof(css_general_characteristics));
1065 goto exit; 1029 memcpy(&css_chsc_characteristics, scsc_area->chsc_char,
1066 } 1030 sizeof(css_chsc_characteristics));
1067 memcpy(&css_general_characteristics, scsc_area->general_char, 1031 } else
1068 sizeof(css_general_characteristics)); 1032 CIO_CRW_EVENT(2, "chsc: scsc failed (rc=%04x)\n",
1069 memcpy(&css_chsc_characteristics, scsc_area->chsc_char, 1033 scsc_area->response.code);
1070 sizeof(css_chsc_characteristics));
1071exit: 1034exit:
1072 free_page ((unsigned long) scsc_area); 1035 free_page ((unsigned long) scsc_area);
1073 return result; 1036 return result;
diff --git a/drivers/s390/cio/device_id.c b/drivers/s390/cio/device_id.c
index 918b8b89cf9a..dc4d87f77f6c 100644
--- a/drivers/s390/cio/device_id.c
+++ b/drivers/s390/cio/device_id.c
@@ -26,17 +26,18 @@
26#include "ioasm.h" 26#include "ioasm.h"
27#include "io_sch.h" 27#include "io_sch.h"
28 28
29/* 29/**
30 * Input : 30 * vm_vdev_to_cu_type - Convert vm virtual device into control unit type
31 * devno - device number 31 * for certain devices.
32 * ps - pointer to sense ID data area 32 * @class: virtual device class
33 * Output : none 33 * @type: virtual device type
34 *
35 * Returns control unit type if a match was made or %0xffff otherwise.
34 */ 36 */
35static void 37static int vm_vdev_to_cu_type(int class, int type)
36VM_virtual_device_info (__u16 devno, struct senseid *ps)
37{ 38{
38 static struct { 39 static struct {
39 int vrdcvcla, vrdcvtyp, cu_type; 40 int class, type, cu_type;
40 } vm_devices[] = { 41 } vm_devices[] = {
41 { 0x08, 0x01, 0x3480 }, 42 { 0x08, 0x01, 0x3480 },
42 { 0x08, 0x02, 0x3430 }, 43 { 0x08, 0x02, 0x3430 },
@@ -68,8 +69,26 @@ VM_virtual_device_info (__u16 devno, struct senseid *ps)
68 { 0x40, 0xc0, 0x5080 }, 69 { 0x40, 0xc0, 0x5080 },
69 { 0x80, 0x00, 0x3215 }, 70 { 0x80, 0x00, 0x3215 },
70 }; 71 };
72 int i;
73
74 for (i = 0; i < ARRAY_SIZE(vm_devices); i++)
75 if (class == vm_devices[i].class && type == vm_devices[i].type)
76 return vm_devices[i].cu_type;
77
78 return 0xffff;
79}
80
81/**
82 * diag_get_dev_info - retrieve device information via DIAG X'210'
83 * @devno: device number
84 * @ps: pointer to sense ID data area
85 *
86 * Returns zero on success, non-zero otherwise.
87 */
88static int diag_get_dev_info(u16 devno, struct senseid *ps)
89{
71 struct diag210 diag_data; 90 struct diag210 diag_data;
72 int ccode, i; 91 int ccode;
73 92
74 CIO_TRACE_EVENT (4, "VMvdinf"); 93 CIO_TRACE_EVENT (4, "VMvdinf");
75 94
@@ -79,21 +98,21 @@ VM_virtual_device_info (__u16 devno, struct senseid *ps)
79 }; 98 };
80 99
81 ccode = diag210 (&diag_data); 100 ccode = diag210 (&diag_data);
82 ps->reserved = 0xff; 101 if ((ccode == 0) || (ccode == 2)) {
102 ps->reserved = 0xff;
83 103
84 /* Special case for bloody osa devices. */ 104 /* Special case for osa devices. */
85 if (diag_data.vrdcvcla == 0x02 && 105 if (diag_data.vrdcvcla == 0x02 && diag_data.vrdcvtyp == 0x20) {
86 diag_data.vrdcvtyp == 0x20) { 106 ps->cu_type = 0x3088;
87 ps->cu_type = 0x3088; 107 ps->cu_model = 0x60;
88 ps->cu_model = 0x60; 108 return 0;
89 return;
90 }
91 for (i = 0; i < ARRAY_SIZE(vm_devices); i++)
92 if (diag_data.vrdcvcla == vm_devices[i].vrdcvcla &&
93 diag_data.vrdcvtyp == vm_devices[i].vrdcvtyp) {
94 ps->cu_type = vm_devices[i].cu_type;
95 return;
96 } 109 }
110 ps->cu_type = vm_vdev_to_cu_type(diag_data.vrdcvcla,
111 diag_data.vrdcvtyp);
112 if (ps->cu_type != 0xffff)
113 return 0;
114 }
115
97 CIO_MSG_EVENT(0, "DIAG X'210' for device %04X returned (cc = %d):" 116 CIO_MSG_EVENT(0, "DIAG X'210' for device %04X returned (cc = %d):"
98 "vdev class : %02X, vdev type : %04X \n ... " 117 "vdev class : %02X, vdev type : %04X \n ... "
99 "rdev class : %02X, rdev type : %04X, " 118 "rdev class : %02X, rdev type : %04X, "
@@ -102,6 +121,8 @@ VM_virtual_device_info (__u16 devno, struct senseid *ps)
102 diag_data.vrdcvcla, diag_data.vrdcvtyp, 121 diag_data.vrdcvcla, diag_data.vrdcvtyp,
103 diag_data.vrdcrccl, diag_data.vrdccrty, 122 diag_data.vrdcrccl, diag_data.vrdccrty,
104 diag_data.vrdccrmd); 123 diag_data.vrdccrmd);
124
125 return -ENODEV;
105} 126}
106 127
107/* 128/*
@@ -130,6 +151,7 @@ __ccw_device_sense_id_start(struct ccw_device *cdev)
130 /* Try on every path. */ 151 /* Try on every path. */
131 ret = -ENODEV; 152 ret = -ENODEV;
132 while (cdev->private->imask != 0) { 153 while (cdev->private->imask != 0) {
154 cdev->private->senseid.cu_type = 0xFFFF;
133 if ((sch->opm & cdev->private->imask) != 0 && 155 if ((sch->opm & cdev->private->imask) != 0 &&
134 cdev->private->iretry > 0) { 156 cdev->private->iretry > 0) {
135 cdev->private->iretry--; 157 cdev->private->iretry--;
@@ -153,7 +175,6 @@ ccw_device_sense_id_start(struct ccw_device *cdev)
153 int ret; 175 int ret;
154 176
155 memset (&cdev->private->senseid, 0, sizeof (struct senseid)); 177 memset (&cdev->private->senseid, 0, sizeof (struct senseid));
156 cdev->private->senseid.cu_type = 0xFFFF;
157 cdev->private->imask = 0x80; 178 cdev->private->imask = 0x80;
158 cdev->private->iretry = 5; 179 cdev->private->iretry = 5;
159 ret = __ccw_device_sense_id_start(cdev); 180 ret = __ccw_device_sense_id_start(cdev);
@@ -173,13 +194,7 @@ ccw_device_check_sense_id(struct ccw_device *cdev)
173 194
174 sch = to_subchannel(cdev->dev.parent); 195 sch = to_subchannel(cdev->dev.parent);
175 irb = &cdev->private->irb; 196 irb = &cdev->private->irb;
176 /* Did we get a proper answer ? */ 197
177 if (cdev->private->senseid.cu_type != 0xFFFF &&
178 cdev->private->senseid.reserved == 0xFF) {
179 if (irb->scsw.count < sizeof (struct senseid) - 8)
180 cdev->private->flags.esid = 1;
181 return 0; /* Success */
182 }
183 /* Check the error cases. */ 198 /* Check the error cases. */
184 if (irb->scsw.fctl & (SCSW_FCTL_HALT_FUNC | SCSW_FCTL_CLEAR_FUNC)) { 199 if (irb->scsw.fctl & (SCSW_FCTL_HALT_FUNC | SCSW_FCTL_CLEAR_FUNC)) {
185 /* Retry Sense ID if requested. */ 200 /* Retry Sense ID if requested. */
@@ -231,6 +246,15 @@ ccw_device_check_sense_id(struct ccw_device *cdev)
231 sch->schid.ssid, sch->schid.sch_no); 246 sch->schid.ssid, sch->schid.sch_no);
232 return -EACCES; 247 return -EACCES;
233 } 248 }
249
250 /* Did we get a proper answer ? */
251 if (irb->scsw.cc == 0 && cdev->private->senseid.cu_type != 0xFFFF &&
252 cdev->private->senseid.reserved == 0xFF) {
253 if (irb->scsw.count < sizeof(struct senseid) - 8)
254 cdev->private->flags.esid = 1;
255 return 0; /* Success */
256 }
257
234 /* Hmm, whatever happened, try again. */ 258 /* Hmm, whatever happened, try again. */
235 CIO_MSG_EVENT(2, "SenseID : start_IO() for device %04x on " 259 CIO_MSG_EVENT(2, "SenseID : start_IO() for device %04x on "
236 "subchannel 0.%x.%04x returns status %02X%02X\n", 260 "subchannel 0.%x.%04x returns status %02X%02X\n",
@@ -283,20 +307,17 @@ ccw_device_sense_id_irq(struct ccw_device *cdev, enum dev_event dev_event)
283 break; 307 break;
284 /* fall through. */ 308 /* fall through. */
285 default: /* Sense ID failed. Try asking VM. */ 309 default: /* Sense ID failed. Try asking VM. */
286 if (MACHINE_IS_VM) { 310 if (MACHINE_IS_VM)
287 VM_virtual_device_info (cdev->private->dev_id.devno, 311 ret = diag_get_dev_info(cdev->private->dev_id.devno,
288 &cdev->private->senseid); 312 &cdev->private->senseid);
289 if (cdev->private->senseid.cu_type != 0xFFFF) { 313 else
290 /* Got the device information from VM. */ 314 /*
291 ccw_device_sense_id_done(cdev, 0); 315 * If we can't couldn't identify the device type we
292 return; 316 * consider the device "not operational".
293 } 317 */
294 } 318 ret = -ENODEV;
295 /* 319
296 * If we can't couldn't identify the device type we 320 ccw_device_sense_id_done(cdev, ret);
297 * consider the device "not operational".
298 */
299 ccw_device_sense_id_done(cdev, -ENODEV);
300 break; 321 break;
301 } 322 }
302} 323}
diff --git a/include/asm-s390/bitops.h b/include/asm-s390/bitops.h
index dba6fecad0be..882db054110c 100644
--- a/include/asm-s390/bitops.h
+++ b/include/asm-s390/bitops.h
@@ -440,242 +440,256 @@ __constant_test_bit(unsigned long nr, const volatile unsigned long *addr) {
440 __test_bit((nr),(addr)) ) 440 __test_bit((nr),(addr)) )
441 441
442/* 442/*
443 * ffz = Find First Zero in word. Undefined if no zero exists, 443 * Optimized find bit helper functions.
444 * so code should check against ~0UL first..
445 */ 444 */
446static inline unsigned long ffz(unsigned long word) 445
446/**
447 * __ffz_word_loop - find byte offset of first long != -1UL
448 * @addr: pointer to array of unsigned long
449 * @size: size of the array in bits
450 */
451static inline unsigned long __ffz_word_loop(const unsigned long *addr,
452 unsigned long size)
447{ 453{
448 unsigned long bit = 0; 454 typedef struct { long _[__BITOPS_WORDS(size)]; } addrtype;
455 unsigned long bytes = 0;
449 456
457 asm volatile(
458#ifndef __s390x__
459 " ahi %1,31\n"
460 " srl %1,5\n"
461 "0: c %2,0(%0,%3)\n"
462 " jne 1f\n"
463 " la %0,4(%0)\n"
464 " brct %1,0b\n"
465 "1:\n"
466#else
467 " aghi %1,63\n"
468 " srlg %1,%1,6\n"
469 "0: cg %2,0(%0,%3)\n"
470 " jne 1f\n"
471 " la %0,8(%0)\n"
472 " brct %1,0b\n"
473 "1:\n"
474#endif
475 : "+a" (bytes), "+d" (size)
476 : "d" (-1UL), "a" (addr), "m" (*(addrtype *) addr)
477 : "cc" );
478 return bytes;
479}
480
481/**
482 * __ffs_word_loop - find byte offset of first long != 0UL
483 * @addr: pointer to array of unsigned long
484 * @size: size of the array in bits
485 */
486static inline unsigned long __ffs_word_loop(const unsigned long *addr,
487 unsigned long size)
488{
489 typedef struct { long _[__BITOPS_WORDS(size)]; } addrtype;
490 unsigned long bytes = 0;
491
492 asm volatile(
493#ifndef __s390x__
494 " ahi %1,31\n"
495 " srl %1,5\n"
496 "0: c %2,0(%0,%3)\n"
497 " jne 1f\n"
498 " la %0,4(%0)\n"
499 " brct %1,0b\n"
500 "1:\n"
501#else
502 " aghi %1,63\n"
503 " srlg %1,%1,6\n"
504 "0: cg %2,0(%0,%3)\n"
505 " jne 1f\n"
506 " la %0,8(%0)\n"
507 " brct %1,0b\n"
508 "1:\n"
509#endif
510 : "+a" (bytes), "+a" (size)
511 : "d" (0UL), "a" (addr), "m" (*(addrtype *) addr)
512 : "cc" );
513 return bytes;
514}
515
516/**
517 * __ffz_word - add number of the first unset bit
518 * @nr: base value the bit number is added to
519 * @word: the word that is searched for unset bits
520 */
521static inline unsigned long __ffz_word(unsigned long nr, unsigned long word)
522{
450#ifdef __s390x__ 523#ifdef __s390x__
451 if (likely((word & 0xffffffff) == 0xffffffff)) { 524 if (likely((word & 0xffffffff) == 0xffffffff)) {
452 word >>= 32; 525 word >>= 32;
453 bit += 32; 526 nr += 32;
454 } 527 }
455#endif 528#endif
456 if (likely((word & 0xffff) == 0xffff)) { 529 if (likely((word & 0xffff) == 0xffff)) {
457 word >>= 16; 530 word >>= 16;
458 bit += 16; 531 nr += 16;
459 } 532 }
460 if (likely((word & 0xff) == 0xff)) { 533 if (likely((word & 0xff) == 0xff)) {
461 word >>= 8; 534 word >>= 8;
462 bit += 8; 535 nr += 8;
463 } 536 }
464 return bit + _zb_findmap[word & 0xff]; 537 return nr + _zb_findmap[(unsigned char) word];
465} 538}
466 539
467/* 540/**
468 * __ffs = find first bit in word. Undefined if no bit exists, 541 * __ffs_word - add number of the first set bit
469 * so code should check against 0UL first.. 542 * @nr: base value the bit number is added to
543 * @word: the word that is searched for set bits
470 */ 544 */
471static inline unsigned long __ffs (unsigned long word) 545static inline unsigned long __ffs_word(unsigned long nr, unsigned long word)
472{ 546{
473 unsigned long bit = 0;
474
475#ifdef __s390x__ 547#ifdef __s390x__
476 if (likely((word & 0xffffffff) == 0)) { 548 if (likely((word & 0xffffffff) == 0)) {
477 word >>= 32; 549 word >>= 32;
478 bit += 32; 550 nr += 32;
479 } 551 }
480#endif 552#endif
481 if (likely((word & 0xffff) == 0)) { 553 if (likely((word & 0xffff) == 0)) {
482 word >>= 16; 554 word >>= 16;
483 bit += 16; 555 nr += 16;
484 } 556 }
485 if (likely((word & 0xff) == 0)) { 557 if (likely((word & 0xff) == 0)) {
486 word >>= 8; 558 word >>= 8;
487 bit += 8; 559 nr += 8;
488 } 560 }
489 return bit + _sb_findmap[word & 0xff]; 561 return nr + _sb_findmap[(unsigned char) word];
490} 562}
491 563
492/*
493 * Find-bit routines..
494 */
495 564
496#ifndef __s390x__ 565/**
566 * __load_ulong_be - load big endian unsigned long
567 * @p: pointer to array of unsigned long
568 * @offset: byte offset of source value in the array
569 */
570static inline unsigned long __load_ulong_be(const unsigned long *p,
571 unsigned long offset)
572{
573 p = (unsigned long *)((unsigned long) p + offset);
574 return *p;
575}
497 576
498static inline int 577/**
499find_first_zero_bit(const unsigned long * addr, unsigned long size) 578 * __load_ulong_le - load little endian unsigned long
579 * @p: pointer to array of unsigned long
580 * @offset: byte offset of source value in the array
581 */
582static inline unsigned long __load_ulong_le(const unsigned long *p,
583 unsigned long offset)
500{ 584{
501 typedef struct { long _[__BITOPS_WORDS(size)]; } addrtype; 585 unsigned long word;
502 unsigned long cmp, count;
503 unsigned int res;
504 586
505 if (!size) 587 p = (unsigned long *)((unsigned long) p + offset);
506 return 0; 588#ifndef __s390x__
507 asm volatile( 589 asm volatile(
508 " lhi %1,-1\n" 590 " ic %0,0(%1)\n"
509 " lr %2,%3\n" 591 " icm %0,2,1(%1)\n"
510 " slr %0,%0\n" 592 " icm %0,4,2(%1)\n"
511 " ahi %2,31\n" 593 " icm %0,8,3(%1)"
512 " srl %2,5\n" 594 : "=&d" (word) : "a" (p), "m" (*p) : "cc");
513 "0: c %1,0(%0,%4)\n" 595#else
514 " jne 1f\n" 596 asm volatile(
515 " la %0,4(%0)\n" 597 " lrvg %0,%1"
516 " brct %2,0b\n" 598 : "=d" (word) : "m" (*p) );
517 " lr %0,%3\n" 599#endif
518 " j 4f\n" 600 return word;
519 "1: l %2,0(%0,%4)\n"
520 " sll %0,3\n"
521 " lhi %1,0xff\n"
522 " tml %2,0xffff\n"
523 " jno 2f\n"
524 " ahi %0,16\n"
525 " srl %2,16\n"
526 "2: tml %2,0x00ff\n"
527 " jno 3f\n"
528 " ahi %0,8\n"
529 " srl %2,8\n"
530 "3: nr %2,%1\n"
531 " ic %2,0(%2,%5)\n"
532 " alr %0,%2\n"
533 "4:"
534 : "=&a" (res), "=&d" (cmp), "=&a" (count)
535 : "a" (size), "a" (addr), "a" (&_zb_findmap),
536 "m" (*(addrtype *) addr) : "cc");
537 return (res < size) ? res : size;
538} 601}
539 602
540static inline int 603/*
541find_first_bit(const unsigned long * addr, unsigned long size) 604 * The various find bit functions.
605 */
606
607/*
608 * ffz - find first zero in word.
609 * @word: The word to search
610 *
611 * Undefined if no zero exists, so code should check against ~0UL first.
612 */
613static inline unsigned long ffz(unsigned long word)
542{ 614{
543 typedef struct { long _[__BITOPS_WORDS(size)]; } addrtype; 615 return __ffz_word(0, word);
544 unsigned long cmp, count; 616}
545 unsigned int res;
546 617
547 if (!size) 618/**
548 return 0; 619 * __ffs - find first bit in word.
549 asm volatile( 620 * @word: The word to search
550 " slr %1,%1\n" 621 *
551 " lr %2,%3\n" 622 * Undefined if no bit exists, so code should check against 0 first.
552 " slr %0,%0\n" 623 */
553 " ahi %2,31\n" 624static inline unsigned long __ffs (unsigned long word)
554 " srl %2,5\n" 625{
555 "0: c %1,0(%0,%4)\n" 626 return __ffs_word(0, word);
556 " jne 1f\n"
557 " la %0,4(%0)\n"
558 " brct %2,0b\n"
559 " lr %0,%3\n"
560 " j 4f\n"
561 "1: l %2,0(%0,%4)\n"
562 " sll %0,3\n"
563 " lhi %1,0xff\n"
564 " tml %2,0xffff\n"
565 " jnz 2f\n"
566 " ahi %0,16\n"
567 " srl %2,16\n"
568 "2: tml %2,0x00ff\n"
569 " jnz 3f\n"
570 " ahi %0,8\n"
571 " srl %2,8\n"
572 "3: nr %2,%1\n"
573 " ic %2,0(%2,%5)\n"
574 " alr %0,%2\n"
575 "4:"
576 : "=&a" (res), "=&d" (cmp), "=&a" (count)
577 : "a" (size), "a" (addr), "a" (&_sb_findmap),
578 "m" (*(addrtype *) addr) : "cc");
579 return (res < size) ? res : size;
580} 627}
581 628
582#else /* __s390x__ */ 629/**
630 * ffs - find first bit set
631 * @x: the word to search
632 *
633 * This is defined the same way as
634 * the libc and compiler builtin ffs routines, therefore
635 * differs in spirit from the above ffz (man ffs).
636 */
637static inline int ffs(int x)
638{
639 if (!x)
640 return 0;
641 return __ffs_word(1, x);
642}
583 643
584static inline unsigned long 644/**
585find_first_zero_bit(const unsigned long * addr, unsigned long size) 645 * find_first_zero_bit - find the first zero bit in a memory region
646 * @addr: The address to start the search at
647 * @size: The maximum size to search
648 *
649 * Returns the bit-number of the first zero bit, not the number of the byte
650 * containing a bit.
651 */
652static inline unsigned long find_first_zero_bit(const unsigned long *addr,
653 unsigned long size)
586{ 654{
587 typedef struct { long _[__BITOPS_WORDS(size)]; } addrtype; 655 unsigned long bytes, bits;
588 unsigned long res, cmp, count;
589 656
590 if (!size) 657 if (!size)
591 return 0; 658 return 0;
592 asm volatile( 659 bytes = __ffz_word_loop(addr, size);
593 " lghi %1,-1\n" 660 bits = __ffz_word(bytes*8, __load_ulong_be(addr, bytes));
594 " lgr %2,%3\n" 661 return (bits < size) ? bits : size;
595 " slgr %0,%0\n" 662}
596 " aghi %2,63\n" 663
597 " srlg %2,%2,6\n" 664/**
598 "0: cg %1,0(%0,%4)\n" 665 * find_first_bit - find the first set bit in a memory region
599 " jne 1f\n" 666 * @addr: The address to start the search at
600 " la %0,8(%0)\n" 667 * @size: The maximum size to search
601 " brct %2,0b\n" 668 *
602 " lgr %0,%3\n" 669 * Returns the bit-number of the first set bit, not the number of the byte
603 " j 5f\n" 670 * containing a bit.
604 "1: lg %2,0(%0,%4)\n" 671 */
605 " sllg %0,%0,3\n" 672static inline unsigned long find_first_bit(const unsigned long * addr,
606 " clr %2,%1\n" 673 unsigned long size)
607 " jne 2f\n"
608 " aghi %0,32\n"
609 " srlg %2,%2,32\n"
610 "2: lghi %1,0xff\n"
611 " tmll %2,0xffff\n"
612 " jno 3f\n"
613 " aghi %0,16\n"
614 " srl %2,16\n"
615 "3: tmll %2,0x00ff\n"
616 " jno 4f\n"
617 " aghi %0,8\n"
618 " srl %2,8\n"
619 "4: ngr %2,%1\n"
620 " ic %2,0(%2,%5)\n"
621 " algr %0,%2\n"
622 "5:"
623 : "=&a" (res), "=&d" (cmp), "=&a" (count)
624 : "a" (size), "a" (addr), "a" (&_zb_findmap),
625 "m" (*(addrtype *) addr) : "cc");
626 return (res < size) ? res : size;
627}
628
629static inline unsigned long
630find_first_bit(const unsigned long * addr, unsigned long size)
631{ 674{
632 typedef struct { long _[__BITOPS_WORDS(size)]; } addrtype; 675 unsigned long bytes, bits;
633 unsigned long res, cmp, count;
634 676
635 if (!size) 677 if (!size)
636 return 0; 678 return 0;
637 asm volatile( 679 bytes = __ffs_word_loop(addr, size);
638 " slgr %1,%1\n" 680 bits = __ffs_word(bytes*8, __load_ulong_be(addr, bytes));
639 " lgr %2,%3\n" 681 return (bits < size) ? bits : size;
640 " slgr %0,%0\n"
641 " aghi %2,63\n"
642 " srlg %2,%2,6\n"
643 "0: cg %1,0(%0,%4)\n"
644 " jne 1f\n"
645 " aghi %0,8\n"
646 " brct %2,0b\n"
647 " lgr %0,%3\n"
648 " j 5f\n"
649 "1: lg %2,0(%0,%4)\n"
650 " sllg %0,%0,3\n"
651 " clr %2,%1\n"
652 " jne 2f\n"
653 " aghi %0,32\n"
654 " srlg %2,%2,32\n"
655 "2: lghi %1,0xff\n"
656 " tmll %2,0xffff\n"
657 " jnz 3f\n"
658 " aghi %0,16\n"
659 " srl %2,16\n"
660 "3: tmll %2,0x00ff\n"
661 " jnz 4f\n"
662 " aghi %0,8\n"
663 " srl %2,8\n"
664 "4: ngr %2,%1\n"
665 " ic %2,0(%2,%5)\n"
666 " algr %0,%2\n"
667 "5:"
668 : "=&a" (res), "=&d" (cmp), "=&a" (count)
669 : "a" (size), "a" (addr), "a" (&_sb_findmap),
670 "m" (*(addrtype *) addr) : "cc");
671 return (res < size) ? res : size;
672} 682}
673 683
674#endif /* __s390x__ */ 684/**
675 685 * find_next_zero_bit - find the first zero bit in a memory region
676static inline int 686 * @addr: The address to base the search on
677find_next_zero_bit (const unsigned long * addr, unsigned long size, 687 * @offset: The bitnumber to start searching at
678 unsigned long offset) 688 * @size: The maximum size to search
689 */
690static inline int find_next_zero_bit (const unsigned long * addr,
691 unsigned long size,
692 unsigned long offset)
679{ 693{
680 const unsigned long *p; 694 const unsigned long *p;
681 unsigned long bit, set; 695 unsigned long bit, set;
@@ -688,10 +702,10 @@ find_next_zero_bit (const unsigned long * addr, unsigned long size,
688 p = addr + offset / __BITOPS_WORDSIZE; 702 p = addr + offset / __BITOPS_WORDSIZE;
689 if (bit) { 703 if (bit) {
690 /* 704 /*
691 * s390 version of ffz returns __BITOPS_WORDSIZE 705 * __ffz_word returns __BITOPS_WORDSIZE
692 * if no zero bit is present in the word. 706 * if no zero bit is present in the word.
693 */ 707 */
694 set = ffz(*p >> bit) + bit; 708 set = __ffz_word(0, *p >> bit) + bit;
695 if (set >= size) 709 if (set >= size)
696 return size + offset; 710 return size + offset;
697 if (set < __BITOPS_WORDSIZE) 711 if (set < __BITOPS_WORDSIZE)
@@ -703,9 +717,15 @@ find_next_zero_bit (const unsigned long * addr, unsigned long size,
703 return offset + find_first_zero_bit(p, size); 717 return offset + find_first_zero_bit(p, size);
704} 718}
705 719
706static inline int 720/**
707find_next_bit (const unsigned long * addr, unsigned long size, 721 * find_next_bit - find the first set bit in a memory region
708 unsigned long offset) 722 * @addr: The address to base the search on
723 * @offset: The bitnumber to start searching at
724 * @size: The maximum size to search
725 */
726static inline int find_next_bit (const unsigned long * addr,
727 unsigned long size,
728 unsigned long offset)
709{ 729{
710 const unsigned long *p; 730 const unsigned long *p;
711 unsigned long bit, set; 731 unsigned long bit, set;
@@ -718,10 +738,10 @@ find_next_bit (const unsigned long * addr, unsigned long size,
718 p = addr + offset / __BITOPS_WORDSIZE; 738 p = addr + offset / __BITOPS_WORDSIZE;
719 if (bit) { 739 if (bit) {
720 /* 740 /*
721 * s390 version of __ffs returns __BITOPS_WORDSIZE 741 * __ffs_word returns __BITOPS_WORDSIZE
722 * if no one bit is present in the word. 742 * if no one bit is present in the word.
723 */ 743 */
724 set = __ffs(*p & (~0UL << bit)); 744 set = __ffs_word(0, *p & (~0UL << bit));
725 if (set >= size) 745 if (set >= size)
726 return size + offset; 746 return size + offset;
727 if (set < __BITOPS_WORDSIZE) 747 if (set < __BITOPS_WORDSIZE)
@@ -744,8 +764,6 @@ static inline int sched_find_first_bit(unsigned long *b)
744 return find_first_bit(b, 140); 764 return find_first_bit(b, 140);
745} 765}
746 766
747#include <asm-generic/bitops/ffs.h>
748
749#include <asm-generic/bitops/fls.h> 767#include <asm-generic/bitops/fls.h>
750#include <asm-generic/bitops/fls64.h> 768#include <asm-generic/bitops/fls64.h>
751 769
@@ -772,108 +790,23 @@ static inline int sched_find_first_bit(unsigned long *b)
772 test_and_clear_bit((nr)^(__BITOPS_WORDSIZE - 8), (unsigned long *)addr) 790 test_and_clear_bit((nr)^(__BITOPS_WORDSIZE - 8), (unsigned long *)addr)
773#define ext2_test_bit(nr, addr) \ 791#define ext2_test_bit(nr, addr) \
774 test_bit((nr)^(__BITOPS_WORDSIZE - 8), (unsigned long *)addr) 792 test_bit((nr)^(__BITOPS_WORDSIZE - 8), (unsigned long *)addr)
775#define ext2_find_next_bit(addr, size, off) \
776 generic_find_next_le_bit((unsigned long *)(addr), (size), (off))
777 793
778#ifndef __s390x__ 794static inline int ext2_find_first_zero_bit(void *vaddr, unsigned int size)
779
780static inline int
781ext2_find_first_zero_bit(void *vaddr, unsigned int size)
782{ 795{
783 typedef struct { long _[__BITOPS_WORDS(size)]; } addrtype; 796 unsigned long bytes, bits;
784 unsigned long cmp, count;
785 unsigned int res;
786 797
787 if (!size) 798 if (!size)
788 return 0; 799 return 0;
789 asm volatile( 800 bytes = __ffz_word_loop(vaddr, size);
790 " lhi %1,-1\n" 801 bits = __ffz_word(bytes*8, __load_ulong_le(vaddr, bytes));
791 " lr %2,%3\n" 802 return (bits < size) ? bits : size;
792 " ahi %2,31\n"
793 " srl %2,5\n"
794 " slr %0,%0\n"
795 "0: cl %1,0(%0,%4)\n"
796 " jne 1f\n"
797 " ahi %0,4\n"
798 " brct %2,0b\n"
799 " lr %0,%3\n"
800 " j 4f\n"
801 "1: l %2,0(%0,%4)\n"
802 " sll %0,3\n"
803 " ahi %0,24\n"
804 " lhi %1,0xff\n"
805 " tmh %2,0xffff\n"
806 " jo 2f\n"
807 " ahi %0,-16\n"
808 " srl %2,16\n"
809 "2: tml %2,0xff00\n"
810 " jo 3f\n"
811 " ahi %0,-8\n"
812 " srl %2,8\n"
813 "3: nr %2,%1\n"
814 " ic %2,0(%2,%5)\n"
815 " alr %0,%2\n"
816 "4:"
817 : "=&a" (res), "=&d" (cmp), "=&a" (count)
818 : "a" (size), "a" (vaddr), "a" (&_zb_findmap),
819 "m" (*(addrtype *) vaddr) : "cc");
820 return (res < size) ? res : size;
821} 803}
822 804
823#else /* __s390x__ */ 805static inline int ext2_find_next_zero_bit(void *vaddr, unsigned long size,
824 806 unsigned long offset)
825static inline unsigned long
826ext2_find_first_zero_bit(void *vaddr, unsigned long size)
827{
828 typedef struct { long _[__BITOPS_WORDS(size)]; } addrtype;
829 unsigned long res, cmp, count;
830
831 if (!size)
832 return 0;
833 asm volatile(
834 " lghi %1,-1\n"
835 " lgr %2,%3\n"
836 " aghi %2,63\n"
837 " srlg %2,%2,6\n"
838 " slgr %0,%0\n"
839 "0: clg %1,0(%0,%4)\n"
840 " jne 1f\n"
841 " aghi %0,8\n"
842 " brct %2,0b\n"
843 " lgr %0,%3\n"
844 " j 5f\n"
845 "1: cl %1,0(%0,%4)\n"
846 " jne 2f\n"
847 " aghi %0,4\n"
848 "2: l %2,0(%0,%4)\n"
849 " sllg %0,%0,3\n"
850 " aghi %0,24\n"
851 " lghi %1,0xff\n"
852 " tmlh %2,0xffff\n"
853 " jo 3f\n"
854 " aghi %0,-16\n"
855 " srl %2,16\n"
856 "3: tmll %2,0xff00\n"
857 " jo 4f\n"
858 " aghi %0,-8\n"
859 " srl %2,8\n"
860 "4: ngr %2,%1\n"
861 " ic %2,0(%2,%5)\n"
862 " algr %0,%2\n"
863 "5:"
864 : "=&a" (res), "=&d" (cmp), "=&a" (count)
865 : "a" (size), "a" (vaddr), "a" (&_zb_findmap),
866 "m" (*(addrtype *) vaddr) : "cc");
867 return (res < size) ? res : size;
868}
869
870#endif /* __s390x__ */
871
872static inline int
873ext2_find_next_zero_bit(void *vaddr, unsigned long size, unsigned long offset)
874{ 807{
875 unsigned long *addr = vaddr, *p; 808 unsigned long *addr = vaddr, *p;
876 unsigned long word, bit, set; 809 unsigned long bit, set;
877 810
878 if (offset >= size) 811 if (offset >= size)
879 return size; 812 return size;
@@ -882,23 +815,11 @@ ext2_find_next_zero_bit(void *vaddr, unsigned long size, unsigned long offset)
882 size -= offset; 815 size -= offset;
883 p = addr + offset / __BITOPS_WORDSIZE; 816 p = addr + offset / __BITOPS_WORDSIZE;
884 if (bit) { 817 if (bit) {
885#ifndef __s390x__
886 asm volatile(
887 " ic %0,0(%1)\n"
888 " icm %0,2,1(%1)\n"
889 " icm %0,4,2(%1)\n"
890 " icm %0,8,3(%1)"
891 : "=&a" (word) : "a" (p), "m" (*p) : "cc");
892#else
893 asm volatile(
894 " lrvg %0,%1"
895 : "=a" (word) : "m" (*p) );
896#endif
897 /* 818 /*
898 * s390 version of ffz returns __BITOPS_WORDSIZE 819 * s390 version of ffz returns __BITOPS_WORDSIZE
899 * if no zero bit is present in the word. 820 * if no zero bit is present in the word.
900 */ 821 */
901 set = ffz(word >> bit) + bit; 822 set = ffz(__load_ulong_le(p, 0) >> bit) + bit;
902 if (set >= size) 823 if (set >= size)
903 return size + offset; 824 return size + offset;
904 if (set < __BITOPS_WORDSIZE) 825 if (set < __BITOPS_WORDSIZE)
@@ -910,6 +831,47 @@ ext2_find_next_zero_bit(void *vaddr, unsigned long size, unsigned long offset)
910 return offset + ext2_find_first_zero_bit(p, size); 831 return offset + ext2_find_first_zero_bit(p, size);
911} 832}
912 833
834static inline unsigned long ext2_find_first_bit(void *vaddr,
835 unsigned long size)
836{
837 unsigned long bytes, bits;
838
839 if (!size)
840 return 0;
841 bytes = __ffs_word_loop(vaddr, size);
842 bits = __ffs_word(bytes*8, __load_ulong_le(vaddr, bytes));
843 return (bits < size) ? bits : size;
844}
845
846static inline int ext2_find_next_bit(void *vaddr, unsigned long size,
847 unsigned long offset)
848{
849 unsigned long *addr = vaddr, *p;
850 unsigned long bit, set;
851
852 if (offset >= size)
853 return size;
854 bit = offset & (__BITOPS_WORDSIZE - 1);
855 offset -= bit;
856 size -= offset;
857 p = addr + offset / __BITOPS_WORDSIZE;
858 if (bit) {
859 /*
860 * s390 version of ffz returns __BITOPS_WORDSIZE
861 * if no zero bit is present in the word.
862 */
863 set = ffs(__load_ulong_le(p, 0) >> bit) + bit;
864 if (set >= size)
865 return size + offset;
866 if (set < __BITOPS_WORDSIZE)
867 return set + offset;
868 offset += __BITOPS_WORDSIZE;
869 size -= __BITOPS_WORDSIZE;
870 p++;
871 }
872 return offset + ext2_find_first_bit(p, size);
873}
874
913#include <asm-generic/bitops/minix.h> 875#include <asm-generic/bitops/minix.h>
914 876
915#endif /* __KERNEL__ */ 877#endif /* __KERNEL__ */
diff --git a/include/asm-s390/cacheflush.h b/include/asm-s390/cacheflush.h
index f7cade8083f3..49d5af916d01 100644
--- a/include/asm-s390/cacheflush.h
+++ b/include/asm-s390/cacheflush.h
@@ -24,4 +24,8 @@
24#define copy_from_user_page(vma, page, vaddr, dst, src, len) \ 24#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
25 memcpy(dst, src, len) 25 memcpy(dst, src, len)
26 26
27#ifdef CONFIG_DEBUG_PAGEALLOC
28void kernel_map_pages(struct page *page, int numpages, int enable);
29#endif
30
27#endif /* _S390_CACHEFLUSH_H */ 31#endif /* _S390_CACHEFLUSH_H */
diff --git a/include/asm-s390/ccwgroup.h b/include/asm-s390/ccwgroup.h
index 7109c7cab87e..289053ef5e60 100644
--- a/include/asm-s390/ccwgroup.h
+++ b/include/asm-s390/ccwgroup.h
@@ -37,6 +37,7 @@ struct ccwgroup_device {
37 * @remove: function called on remove 37 * @remove: function called on remove
38 * @set_online: function called when device is set online 38 * @set_online: function called when device is set online
39 * @set_offline: function called when device is set offline 39 * @set_offline: function called when device is set offline
40 * @shutdown: function called when device is shut down
40 * @driver: embedded driver structure 41 * @driver: embedded driver structure
41 */ 42 */
42struct ccwgroup_driver { 43struct ccwgroup_driver {
@@ -49,6 +50,7 @@ struct ccwgroup_driver {
49 void (*remove) (struct ccwgroup_device *); 50 void (*remove) (struct ccwgroup_device *);
50 int (*set_online) (struct ccwgroup_device *); 51 int (*set_online) (struct ccwgroup_device *);
51 int (*set_offline) (struct ccwgroup_device *); 52 int (*set_offline) (struct ccwgroup_device *);
53 void (*shutdown)(struct ccwgroup_device *);
52 54
53 struct device_driver driver; 55 struct device_driver driver;
54}; 56};
diff --git a/include/asm-s390/pgtable.h b/include/asm-s390/pgtable.h
index 79b9eab1a0c7..3f520754e71c 100644
--- a/include/asm-s390/pgtable.h
+++ b/include/asm-s390/pgtable.h
@@ -115,15 +115,21 @@ extern char empty_zero_page[PAGE_SIZE];
115#ifndef __s390x__ 115#ifndef __s390x__
116#define VMALLOC_START 0x78000000UL 116#define VMALLOC_START 0x78000000UL
117#define VMALLOC_END 0x7e000000UL 117#define VMALLOC_END 0x7e000000UL
118#define VMEM_MAP_MAX 0x80000000UL 118#define VMEM_MAP_END 0x80000000UL
119#else /* __s390x__ */ 119#else /* __s390x__ */
120#define VMALLOC_START 0x3e000000000UL 120#define VMALLOC_START 0x3e000000000UL
121#define VMALLOC_END 0x3e040000000UL 121#define VMALLOC_END 0x3e040000000UL
122#define VMEM_MAP_MAX 0x40000000000UL 122#define VMEM_MAP_END 0x40000000000UL
123#endif /* __s390x__ */ 123#endif /* __s390x__ */
124 124
125/*
126 * VMEM_MAX_PHYS is the highest physical address that can be added to the 1:1
127 * mapping. This needs to be calculated at compile time since the size of the
128 * VMEM_MAP is static but the size of struct page can change.
129 */
130#define VMEM_MAX_PHYS min(VMALLOC_START, ((VMEM_MAP_END - VMALLOC_END) / \
131 sizeof(struct page) * PAGE_SIZE) & ~((16 << 20) - 1))
125#define VMEM_MAP ((struct page *) VMALLOC_END) 132#define VMEM_MAP ((struct page *) VMALLOC_END)
126#define VMEM_MAP_SIZE ((VMALLOC_START / PAGE_SIZE) * sizeof(struct page))
127 133
128/* 134/*
129 * A 31 bit pagetable entry of S390 has following format: 135 * A 31 bit pagetable entry of S390 has following format:
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-19 06:59:33 -0500