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-rw-r--r--drivers/s390/char/Makefile5
-rw-r--r--drivers/s390/char/con3215.c7
-rw-r--r--drivers/s390/char/con3270.c7
-rw-r--r--drivers/s390/char/sclp.c10
-rw-r--r--drivers/s390/char/sclp.h72
-rw-r--r--drivers/s390/char/sclp_chp.c196
-rw-r--r--drivers/s390/char/sclp_config.c75
-rw-r--r--drivers/s390/char/sclp_cpi.c4
-rw-r--r--drivers/s390/char/sclp_quiesce.c2
-rw-r--r--drivers/s390/char/sclp_rw.c16
-rw-r--r--drivers/s390/char/sclp_sdias.c255
-rw-r--r--drivers/s390/char/sclp_tty.c6
-rw-r--r--drivers/s390/char/sclp_vt220.c8
-rw-r--r--drivers/s390/char/vmlogrdr.c9
-rw-r--r--drivers/s390/char/zcore.c651
15 files changed, 1252 insertions, 71 deletions
diff --git a/drivers/s390/char/Makefile b/drivers/s390/char/Makefile
index 293e667b50f..c210784bdf4 100644
--- a/drivers/s390/char/Makefile
+++ b/drivers/s390/char/Makefile
@@ -3,7 +3,7 @@
#
obj-y += ctrlchar.o keyboard.o defkeymap.o sclp.o sclp_rw.o sclp_quiesce.o \
- sclp_info.o
+ sclp_info.o sclp_config.o sclp_chp.o
obj-$(CONFIG_TN3270) += raw3270.o
obj-$(CONFIG_TN3270_CONSOLE) += con3270.o
@@ -29,3 +29,6 @@ obj-$(CONFIG_S390_TAPE_34XX) += tape_34xx.o
obj-$(CONFIG_S390_TAPE_3590) += tape_3590.o
obj-$(CONFIG_MONREADER) += monreader.o
obj-$(CONFIG_MONWRITER) += monwriter.o
+
+zcore_mod-objs := sclp_sdias.o zcore.o
+obj-$(CONFIG_ZFCPDUMP) += zcore_mod.o
diff --git a/drivers/s390/char/con3215.c b/drivers/s390/char/con3215.c
index 9a328f14a64..6000bdee408 100644
--- a/drivers/s390/char/con3215.c
+++ b/drivers/s390/char/con3215.c
@@ -813,12 +813,6 @@ con3215_unblank(void)
spin_unlock_irqrestore(get_ccwdev_lock(raw->cdev), flags);
}
-static int __init
-con3215_consetup(struct console *co, char *options)
-{
- return 0;
-}
-
/*
* The console structure for the 3215 console
*/
@@ -827,7 +821,6 @@ static struct console con3215 = {
.write = con3215_write,
.device = con3215_device,
.unblank = con3215_unblank,
- .setup = con3215_consetup,
.flags = CON_PRINTBUFFER,
};
diff --git a/drivers/s390/char/con3270.c b/drivers/s390/char/con3270.c
index 8e7f2d7633d..fd3479119eb 100644
--- a/drivers/s390/char/con3270.c
+++ b/drivers/s390/char/con3270.c
@@ -555,12 +555,6 @@ con3270_unblank(void)
spin_unlock_irqrestore(&cp->view.lock, flags);
}
-static int __init
-con3270_consetup(struct console *co, char *options)
-{
- return 0;
-}
-
/*
* The console structure for the 3270 console
*/
@@ -569,7 +563,6 @@ static struct console con3270 = {
.write = con3270_write,
.device = con3270_device,
.unblank = con3270_unblank,
- .setup = con3270_consetup,
.flags = CON_PRINTBUFFER,
};
diff --git a/drivers/s390/char/sclp.c b/drivers/s390/char/sclp.c
index f171de3b0b1..fa62e694405 100644
--- a/drivers/s390/char/sclp.c
+++ b/drivers/s390/char/sclp.c
@@ -15,6 +15,7 @@
#include <linux/timer.h>
#include <linux/reboot.h>
#include <linux/jiffies.h>
+#include <linux/init.h>
#include <asm/types.h>
#include <asm/s390_ext.h>
@@ -510,7 +511,7 @@ sclp_state_change_cb(struct evbuf_header *evbuf)
}
static struct sclp_register sclp_state_change_event = {
- .receive_mask = EvTyp_StateChange_Mask,
+ .receive_mask = EVTYP_STATECHANGE_MASK,
.receiver_fn = sclp_state_change_cb
};
@@ -930,3 +931,10 @@ sclp_init(void)
sclp_init_mask(1);
return 0;
}
+
+static __init int sclp_initcall(void)
+{
+ return sclp_init();
+}
+
+arch_initcall(sclp_initcall);
diff --git a/drivers/s390/char/sclp.h b/drivers/s390/char/sclp.h
index 7d29ab45a6e..87ac4a3ad49 100644
--- a/drivers/s390/char/sclp.h
+++ b/drivers/s390/char/sclp.h
@@ -19,33 +19,37 @@
#define MAX_KMEM_PAGES (sizeof(unsigned long) << 3)
#define MAX_CONSOLE_PAGES 4
-#define EvTyp_OpCmd 0x01
-#define EvTyp_Msg 0x02
-#define EvTyp_StateChange 0x08
-#define EvTyp_PMsgCmd 0x09
-#define EvTyp_CntlProgOpCmd 0x20
-#define EvTyp_CntlProgIdent 0x0B
-#define EvTyp_SigQuiesce 0x1D
-#define EvTyp_VT220Msg 0x1A
-
-#define EvTyp_OpCmd_Mask 0x80000000
-#define EvTyp_Msg_Mask 0x40000000
-#define EvTyp_StateChange_Mask 0x01000000
-#define EvTyp_PMsgCmd_Mask 0x00800000
-#define EvTyp_CtlProgOpCmd_Mask 0x00000001
-#define EvTyp_CtlProgIdent_Mask 0x00200000
-#define EvTyp_SigQuiesce_Mask 0x00000008
-#define EvTyp_VT220Msg_Mask 0x00000040
-
-#define GnrlMsgFlgs_DOM 0x8000
-#define GnrlMsgFlgs_SndAlrm 0x4000
-#define GnrlMsgFlgs_HoldMsg 0x2000
-
-#define LnTpFlgs_CntlText 0x8000
-#define LnTpFlgs_LabelText 0x4000
-#define LnTpFlgs_DataText 0x2000
-#define LnTpFlgs_EndText 0x1000
-#define LnTpFlgs_PromptText 0x0800
+#define EVTYP_OPCMD 0x01
+#define EVTYP_MSG 0x02
+#define EVTYP_STATECHANGE 0x08
+#define EVTYP_PMSGCMD 0x09
+#define EVTYP_CNTLPROGOPCMD 0x20
+#define EVTYP_CNTLPROGIDENT 0x0B
+#define EVTYP_SIGQUIESCE 0x1D
+#define EVTYP_VT220MSG 0x1A
+#define EVTYP_CONFMGMDATA 0x04
+#define EVTYP_SDIAS 0x1C
+
+#define EVTYP_OPCMD_MASK 0x80000000
+#define EVTYP_MSG_MASK 0x40000000
+#define EVTYP_STATECHANGE_MASK 0x01000000
+#define EVTYP_PMSGCMD_MASK 0x00800000
+#define EVTYP_CTLPROGOPCMD_MASK 0x00000001
+#define EVTYP_CTLPROGIDENT_MASK 0x00200000
+#define EVTYP_SIGQUIESCE_MASK 0x00000008
+#define EVTYP_VT220MSG_MASK 0x00000040
+#define EVTYP_CONFMGMDATA_MASK 0x10000000
+#define EVTYP_SDIAS_MASK 0x00000010
+
+#define GNRLMSGFLGS_DOM 0x8000
+#define GNRLMSGFLGS_SNDALRM 0x4000
+#define GNRLMSGFLGS_HOLDMSG 0x2000
+
+#define LNTPFLGS_CNTLTEXT 0x8000
+#define LNTPFLGS_LABELTEXT 0x4000
+#define LNTPFLGS_DATATEXT 0x2000
+#define LNTPFLGS_ENDTEXT 0x1000
+#define LNTPFLGS_PROMPTTEXT 0x0800
typedef unsigned int sclp_cmdw_t;
@@ -56,15 +60,15 @@ typedef unsigned int sclp_cmdw_t;
#define SCLP_CMDW_READ_SCP_INFO_FORCED 0x00120001
#define GDS_ID_MDSMU 0x1310
-#define GDS_ID_MDSRouteInfo 0x1311
-#define GDS_ID_AgUnWrkCorr 0x1549
-#define GDS_ID_SNACondReport 0x1532
+#define GDS_ID_MDSROUTEINFO 0x1311
+#define GDS_ID_AGUNWRKCORR 0x1549
+#define GDS_ID_SNACONDREPORT 0x1532
#define GDS_ID_CPMSU 0x1212
-#define GDS_ID_RoutTargInstr 0x154D
-#define GDS_ID_OpReq 0x8070
-#define GDS_ID_TextCmd 0x1320
+#define GDS_ID_ROUTTARGINSTR 0x154D
+#define GDS_ID_OPREQ 0x8070
+#define GDS_ID_TEXTCMD 0x1320
-#define GDS_KEY_SelfDefTextMsg 0x31
+#define GDS_KEY_SELFDEFTEXTMSG 0x31
typedef u32 sccb_mask_t; /* ATTENTION: assumes 32bit mask !!! */
diff --git a/drivers/s390/char/sclp_chp.c b/drivers/s390/char/sclp_chp.c
new file mode 100644
index 00000000000..a66b914519b
--- /dev/null
+++ b/drivers/s390/char/sclp_chp.c
@@ -0,0 +1,196 @@
+/*
+ * drivers/s390/char/sclp_chp.c
+ *
+ * Copyright IBM Corp. 2007
+ * Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
+ */
+
+#include <linux/types.h>
+#include <linux/gfp.h>
+#include <linux/errno.h>
+#include <linux/completion.h>
+#include <asm/sclp.h>
+#include <asm/chpid.h>
+
+#include "sclp.h"
+
+#define TAG "sclp_chp: "
+
+#define SCLP_CMDW_CONFIGURE_CHANNEL_PATH 0x000f0001
+#define SCLP_CMDW_DECONFIGURE_CHANNEL_PATH 0x000e0001
+#define SCLP_CMDW_READ_CHANNEL_PATH_INFORMATION 0x00030001
+
+static inline sclp_cmdw_t get_configure_cmdw(struct chp_id chpid)
+{
+ return SCLP_CMDW_CONFIGURE_CHANNEL_PATH | chpid.id << 8;
+}
+
+static inline sclp_cmdw_t get_deconfigure_cmdw(struct chp_id chpid)
+{
+ return SCLP_CMDW_DECONFIGURE_CHANNEL_PATH | chpid.id << 8;
+}
+
+static void chp_callback(struct sclp_req *req, void *data)
+{
+ struct completion *completion = data;
+
+ complete(completion);
+}
+
+struct chp_cfg_sccb {
+ struct sccb_header header;
+ u8 ccm;
+ u8 reserved[6];
+ u8 cssid;
+} __attribute__((packed));
+
+struct chp_cfg_data {
+ struct chp_cfg_sccb sccb;
+ struct sclp_req req;
+ struct completion completion;
+} __attribute__((packed));
+
+static int do_configure(sclp_cmdw_t cmd)
+{
+ struct chp_cfg_data *data;
+ int rc;
+
+ /* Prepare sccb. */
+ data = (struct chp_cfg_data *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
+ if (!data)
+ return -ENOMEM;
+ data->sccb.header.length = sizeof(struct chp_cfg_sccb);
+ data->req.command = cmd;
+ data->req.sccb = &(data->sccb);
+ data->req.status = SCLP_REQ_FILLED;
+ data->req.callback = chp_callback;
+ data->req.callback_data = &(data->completion);
+ init_completion(&data->completion);
+
+ /* Perform sclp request. */
+ rc = sclp_add_request(&(data->req));
+ if (rc)
+ goto out;
+ wait_for_completion(&data->completion);
+
+ /* Check response .*/
+ if (data->req.status != SCLP_REQ_DONE) {
+ printk(KERN_WARNING TAG "configure channel-path request failed "
+ "(status=0x%02x)\n", data->req.status);
+ rc = -EIO;
+ goto out;
+ }
+ switch (data->sccb.header.response_code) {
+ case 0x0020:
+ case 0x0120:
+ case 0x0440:
+ case 0x0450:
+ break;
+ default:
+ printk(KERN_WARNING TAG "configure channel-path failed "
+ "(cmd=0x%08x, response=0x%04x)\n", cmd,
+ data->sccb.header.response_code);
+ rc = -EIO;
+ break;
+ }
+out:
+ free_page((unsigned long) data);
+
+ return rc;
+}
+
+/**
+ * sclp_chp_configure - perform configure channel-path sclp command
+ * @chpid: channel-path ID
+ *
+ * Perform configure channel-path command sclp command for specified chpid.
+ * Return 0 after command successfully finished, non-zero otherwise.
+ */
+int sclp_chp_configure(struct chp_id chpid)
+{
+ return do_configure(get_configure_cmdw(chpid));
+}
+
+/**
+ * sclp_chp_deconfigure - perform deconfigure channel-path sclp command
+ * @chpid: channel-path ID
+ *
+ * Perform deconfigure channel-path command sclp command for specified chpid
+ * and wait for completion. On success return 0. Return non-zero otherwise.
+ */
+int sclp_chp_deconfigure(struct chp_id chpid)
+{
+ return do_configure(get_deconfigure_cmdw(chpid));
+}
+
+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));
+
+struct chp_info_data {
+ struct chp_info_sccb sccb;
+ struct sclp_req req;
+ struct completion completion;
+} __attribute__((packed));
+
+/**
+ * sclp_chp_read_info - perform read channel-path information sclp command
+ * @info: resulting channel-path information data
+ *
+ * Perform read channel-path information sclp command and wait for completion.
+ * On success, store channel-path information in @info and return 0. Return
+ * non-zero otherwise.
+ */
+int sclp_chp_read_info(struct sclp_chp_info *info)
+{
+ struct chp_info_data *data;
+ int rc;
+
+ /* Prepare sccb. */
+ data = (struct chp_info_data *) get_zeroed_page(GFP_KERNEL | GFP_DMA);
+ if (!data)
+ return -ENOMEM;
+ data->sccb.header.length = sizeof(struct chp_info_sccb);
+ data->req.command = SCLP_CMDW_READ_CHANNEL_PATH_INFORMATION;
+ data->req.sccb = &(data->sccb);
+ data->req.status = SCLP_REQ_FILLED;
+ data->req.callback = chp_callback;
+ data->req.callback_data = &(data->completion);
+ init_completion(&data->completion);
+
+ /* Perform sclp request. */
+ rc = sclp_add_request(&(data->req));
+ if (rc)
+ goto out;
+ wait_for_completion(&data->completion);
+
+ /* Check response .*/
+ if (data->req.status != SCLP_REQ_DONE) {
+ printk(KERN_WARNING TAG "read channel-path info request failed "
+ "(status=0x%02x)\n", data->req.status);
+ rc = -EIO;
+ goto out;
+ }
+ if (data->sccb.header.response_code != 0x0010) {
+ printk(KERN_WARNING TAG "read channel-path info failed "
+ "(response=0x%04x)\n", data->sccb.header.response_code);
+ rc = -EIO;
+ goto out;
+ }
+ memcpy(info->recognized, data->sccb.recognized,
+ SCLP_CHP_INFO_MASK_SIZE);
+ memcpy(info->standby, data->sccb.standby,
+ SCLP_CHP_INFO_MASK_SIZE);
+ memcpy(info->configured, data->sccb.configured,
+ SCLP_CHP_INFO_MASK_SIZE);
+out:
+ free_page((unsigned long) data);
+
+ return rc;
+}
diff --git a/drivers/s390/char/sclp_config.c b/drivers/s390/char/sclp_config.c
new file mode 100644
index 00000000000..5322e5e54a9
--- /dev/null
+++ b/drivers/s390/char/sclp_config.c
@@ -0,0 +1,75 @@
+/*
+ * drivers/s390/char/sclp_config.c
+ *
+ * Copyright IBM Corp. 2007
+ * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>
+ */
+
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/cpu.h>
+#include <linux/sysdev.h>
+#include <linux/workqueue.h>
+#include "sclp.h"
+
+#define TAG "sclp_config: "
+
+struct conf_mgm_data {
+ u8 reserved;
+ u8 ev_qualifier;
+} __attribute__((packed));
+
+#define EV_QUAL_CAP_CHANGE 3
+
+static struct work_struct sclp_cpu_capability_work;
+
+static void sclp_cpu_capability_notify(struct work_struct *work)
+{
+ int cpu;
+ struct sys_device *sysdev;
+
+ printk(KERN_WARNING TAG "cpu capability changed.\n");
+ lock_cpu_hotplug();
+ for_each_online_cpu(cpu) {
+ sysdev = get_cpu_sysdev(cpu);
+ kobject_uevent(&sysdev->kobj, KOBJ_CHANGE);
+ }
+ unlock_cpu_hotplug();
+}
+
+static void sclp_conf_receiver_fn(struct evbuf_header *evbuf)
+{
+ struct conf_mgm_data *cdata;
+
+ cdata = (struct conf_mgm_data *)(evbuf + 1);
+ if (cdata->ev_qualifier == EV_QUAL_CAP_CHANGE)
+ schedule_work(&sclp_cpu_capability_work);
+}
+
+static struct sclp_register sclp_conf_register =
+{
+ .receive_mask = EVTYP_CONFMGMDATA_MASK,
+ .receiver_fn = sclp_conf_receiver_fn,
+};
+
+static int __init sclp_conf_init(void)
+{
+ int rc;
+
+ INIT_WORK(&sclp_cpu_capability_work, sclp_cpu_capability_notify);
+
+ rc = sclp_register(&sclp_conf_register);
+ if (rc) {
+ printk(KERN_ERR TAG "failed to register (%d).\n", rc);
+ return rc;
+ }
+
+ if (!(sclp_conf_register.sclp_receive_mask & EVTYP_CONFMGMDATA_MASK)) {
+ printk(KERN_WARNING TAG "no configuration management.\n");
+ sclp_unregister(&sclp_conf_register);
+ rc = -ENOSYS;
+ }
+ return rc;
+}
+
+__initcall(sclp_conf_init);
diff --git a/drivers/s390/char/sclp_cpi.c b/drivers/s390/char/sclp_cpi.c
index 65aa2c85737..29fe2a5ec2f 100644
--- a/drivers/s390/char/sclp_cpi.c
+++ b/drivers/s390/char/sclp_cpi.c
@@ -46,7 +46,7 @@ struct cpi_sccb {
/* Event type structure for write message and write priority message */
static struct sclp_register sclp_cpi_event =
{
- .send_mask = EvTyp_CtlProgIdent_Mask
+ .send_mask = EVTYP_CTLPROGIDENT_MASK
};
MODULE_LICENSE("GPL");
@@ -201,7 +201,7 @@ cpi_module_init(void)
"console.\n");
return -EINVAL;
}
- if (!(sclp_cpi_event.sclp_send_mask & EvTyp_CtlProgIdent_Mask)) {
+ if (!(sclp_cpi_event.sclp_send_mask & EVTYP_CTLPROGIDENT_MASK)) {
printk(KERN_WARNING "cpi: no control program identification "
"support\n");
sclp_unregister(&sclp_cpi_event);
diff --git a/drivers/s390/char/sclp_quiesce.c b/drivers/s390/char/sclp_quiesce.c
index baa8fe669ed..45ff25e787c 100644
--- a/drivers/s390/char/sclp_quiesce.c
+++ b/drivers/s390/char/sclp_quiesce.c
@@ -43,7 +43,7 @@ sclp_quiesce_handler(struct evbuf_header *evbuf)
}
static struct sclp_register sclp_quiesce_event = {
- .receive_mask = EvTyp_SigQuiesce_Mask,
+ .receive_mask = EVTYP_SIGQUIESCE_MASK,
.receiver_fn = sclp_quiesce_handler
};
diff --git a/drivers/s390/char/sclp_rw.c b/drivers/s390/char/sclp_rw.c
index 2486783ea58..bbd5b8b66f4 100644
--- a/drivers/s390/char/sclp_rw.c
+++ b/drivers/s390/char/sclp_rw.c
@@ -30,7 +30,7 @@
/* Event type structure for write message and write priority message */
static struct sclp_register sclp_rw_event = {
- .send_mask = EvTyp_Msg_Mask | EvTyp_PMsgCmd_Mask
+ .send_mask = EVTYP_MSG_MASK | EVTYP_PMSGCMD_MASK
};
/*
@@ -64,7 +64,7 @@ sclp_make_buffer(void *page, unsigned short columns, unsigned short htab)
memset(sccb, 0, sizeof(struct write_sccb));
sccb->header.length = sizeof(struct write_sccb);
sccb->msg_buf.header.length = sizeof(struct msg_buf);
- sccb->msg_buf.header.type = EvTyp_Msg;
+ sccb->msg_buf.header.type = EVTYP_MSG;
sccb->msg_buf.mdb.header.length = sizeof(struct mdb);
sccb->msg_buf.mdb.header.type = 1;
sccb->msg_buf.mdb.header.tag = 0xD4C4C240; /* ebcdic "MDB " */
@@ -114,7 +114,7 @@ sclp_initialize_mto(struct sclp_buffer *buffer, int max_len)
memset(mto, 0, sizeof(struct mto));
mto->length = sizeof(struct mto);
mto->type = 4; /* message text object */
- mto->line_type_flags = LnTpFlgs_EndText; /* end text */
+ mto->line_type_flags = LNTPFLGS_ENDTEXT; /* end text */
/* set pointer to first byte after struct mto. */
buffer->current_line = (char *) (mto + 1);
@@ -215,7 +215,7 @@ sclp_write(struct sclp_buffer *buffer, const unsigned char *msg, int count)
case '\a': /* bell, one for several times */
/* set SCLP sound alarm bit in General Object */
buffer->sccb->msg_buf.mdb.go.general_msg_flags |=
- GnrlMsgFlgs_SndAlrm;
+ GNRLMSGFLGS_SNDALRM;
break;
case '\t': /* horizontal tabulator */
/* check if new mto needs to be created */
@@ -452,12 +452,12 @@ sclp_emit_buffer(struct sclp_buffer *buffer,
return -EIO;
sccb = buffer->sccb;
- if (sclp_rw_event.sclp_send_mask & EvTyp_Msg_Mask)
+ if (sclp_rw_event.sclp_send_mask & EVTYP_MSG_MASK)
/* Use normal write message */
- sccb->msg_buf.header.type = EvTyp_Msg;
- else if (sclp_rw_event.sclp_send_mask & EvTyp_PMsgCmd_Mask)
+ sccb->msg_buf.header.type = EVTYP_MSG;
+ else if (sclp_rw_event.sclp_send_mask & EVTYP_PMSGCMD_MASK)
/* Use write priority message */
- sccb->msg_buf.header.type = EvTyp_PMsgCmd;
+ sccb->msg_buf.header.type = EVTYP_PMSGCMD;
else
return -ENOSYS;
buffer->request.command = SCLP_CMDW_WRITE_EVENT_DATA;
diff --git a/drivers/s390/char/sclp_sdias.c b/drivers/s390/char/sclp_sdias.c
new file mode 100644
index 00000000000..52283daddae
--- /dev/null
+++ b/drivers/s390/char/sclp_sdias.c
@@ -0,0 +1,255 @@
+/*
+ * Sclp "store data in absolut storage"
+ *
+ * Copyright IBM Corp. 2003,2007
+ * Author(s): Michael Holzheu
+ */
+
+#include <linux/sched.h>
+#include <asm/sclp.h>
+#include <asm/debug.h>
+#include <asm/ipl.h>
+#include "sclp.h"
+#include "sclp_rw.h"
+
+#define TRACE(x...) debug_sprintf_event(sdias_dbf, 1, x)
+#define ERROR_MSG(x...) printk ( KERN_ALERT "SDIAS: " x )
+
+#define SDIAS_RETRIES 300
+#define SDIAS_SLEEP_TICKS 50
+
+#define EQ_STORE_DATA 0x0
+#define EQ_SIZE 0x1
+#define DI_FCP_DUMP 0x0
+#define ASA_SIZE_32 0x0
+#define ASA_SIZE_64 0x1
+#define EVSTATE_ALL_STORED 0x0
+#define EVSTATE_NO_DATA 0x3
+#define EVSTATE_PART_STORED 0x10
+
+static struct debug_info *sdias_dbf;
+
+static struct sclp_register sclp_sdias_register = {
+ .send_mask = EVTYP_SDIAS_MASK,
+};
+
+struct sdias_evbuf {
+ struct evbuf_header hdr;
+ u8 event_qual;
+ u8 data_id;
+ u64 reserved2;
+ u32 event_id;
+ u16 reserved3;
+ u8 asa_size;
+ u8 event_status;
+ u32 reserved4;
+ u32 blk_cnt;
+ u64 asa;
+ u32 reserved5;
+ u32 fbn;
+ u32 reserved6;
+ u32 lbn;
+ u16 reserved7;
+ u16 dbs;
+} __attribute__((packed));
+
+struct sdias_sccb {
+ struct sccb_header hdr;
+ struct sdias_evbuf evbuf;
+} __attribute__((packed));
+
+static struct sdias_sccb sccb __attribute__((aligned(4096)));
+
+static int sclp_req_done;
+static wait_queue_head_t sdias_wq;
+static DEFINE_MUTEX(sdias_mutex);
+
+static void sdias_callback(struct sclp_req *request, void *data)
+{
+ struct sdias_sccb *sccb;
+
+ sccb = (struct sdias_sccb *) request->sccb;
+ sclp_req_done = 1;
+ wake_up(&sdias_wq); /* Inform caller, that request is complete */
+ TRACE("callback done\n");
+}
+
+static int sdias_sclp_send(struct sclp_req *req)
+{
+ int retries;
+ int rc;
+
+ for (retries = SDIAS_RETRIES; retries; retries--) {
+ sclp_req_done = 0;
+ TRACE("add request\n");
+ rc = sclp_add_request(req);
+ if (rc) {
+ /* not initiated, wait some time and retry */
+ set_current_state(TASK_INTERRUPTIBLE);
+ TRACE("add request failed: rc = %i\n",rc);
+ schedule_timeout(SDIAS_SLEEP_TICKS);
+ continue;
+ }
+ /* initiated, wait for completion of service call */
+ wait_event(sdias_wq, (sclp_req_done == 1));
+ if (req->status == SCLP_REQ_FAILED) {
+ TRACE("sclp request failed\n");
+ rc = -EIO;
+ continue;
+ }
+ TRACE("request done\n");
+ break;
+ }
+ return rc;
+}
+
+/*
+ * Get number of blocks (4K) available in the HSA
+ */
+int sclp_sdias_blk_count(void)
+{
+ struct sclp_req request;
+ int rc;
+
+ mutex_lock(&sdias_mutex);
+
+ memset(&sccb, 0, sizeof(sccb));
+ memset(&request, 0, sizeof(request));
+
+ sccb.hdr.length = sizeof(sccb);
+ sccb.evbuf.hdr.length = sizeof(struct sdias_evbuf);
+ sccb.evbuf.hdr.type = EVTYP_SDIAS;
+ sccb.evbuf.event_qual = EQ_SIZE;
+ sccb.evbuf.data_id = DI_FCP_DUMP;
+ sccb.evbuf.event_id = 4712;
+ sccb.evbuf.dbs = 1;
+
+ request.sccb = &sccb;
+ request.command = SCLP_CMDW_WRITE_EVENT_DATA;
+ request.status = SCLP_REQ_FILLED;
+ request.callback = sdias_callback;
+
+ rc = sdias_sclp_send(&request);
+ if (rc) {
+ ERROR_MSG("sclp_send failed for get_nr_blocks\n");
+ goto out;
+ }
+ if (sccb.hdr.response_code != 0x0020) {
+ TRACE("send failed: %x\n", sccb.hdr.response_code);
+ rc = -EIO;
+ goto out;
+ }
+
+ switch (sccb.evbuf.event_status) {
+ case 0:
+ rc = sccb.evbuf.blk_cnt;
+ break;
+ default:
+ ERROR_MSG("SCLP error: %x\n", sccb.evbuf.event_status);
+ rc = -EIO;
+ goto out;
+ }
+ TRACE("%i blocks\n", rc);
+out:
+ mutex_unlock(&sdias_mutex);
+ return rc;
+}
+
+/*
+ * Copy from HSA to absolute storage (not reentrant):
+ *
+ * @dest : Address of buffer where data should be copied
+ * @start_blk: Start Block (beginning with 1)
+ * @nr_blks : Number of 4K blocks to copy
+ *
+ * Return Value: 0 : Requested 'number' of blocks of data copied
+ * <0: ERROR - negative event status
+ */
+int sclp_sdias_copy(void *dest, int start_blk, int nr_blks)
+{
+ struct sclp_req request;
+ int rc;
+
+ mutex_lock(&sdias_mutex);
+
+ memset(&sccb, 0, sizeof(sccb));
+ memset(&request, 0, sizeof(request));
+
+ sccb.hdr.length = sizeof(sccb);
+ sccb.evbuf.hdr.length = sizeof(struct sdias_evbuf);
+ sccb.evbuf.hdr.type = EVTYP_SDIAS;
+ sccb.evbuf.hdr.flags = 0;
+ sccb.evbuf.event_qual = EQ_STORE_DATA;
+ sccb.evbuf.data_id = DI_FCP_DUMP;
+ sccb.evbuf.event_id = 4712;
+#ifdef __s390x__
+ sccb.evbuf.asa_size = ASA_SIZE_64;
+#else
+ sccb.evbuf.asa_size = ASA_SIZE_32;
+#endif
+ sccb.evbuf.event_status = 0;
+ sccb.evbuf.blk_cnt = nr_blks;
+ sccb.evbuf.asa = (unsigned long)dest;
+ sccb.evbuf.fbn = start_blk;
+ sccb.evbuf.lbn = 0;
+ sccb.evbuf.dbs = 1;
+
+ request.sccb = &sccb;
+ request.command = SCLP_CMDW_WRITE_EVENT_DATA;
+ request.status = SCLP_REQ_FILLED;
+ request.callback = sdias_callback;
+
+ rc = sdias_sclp_send(&request);
+ if (rc) {
+ ERROR_MSG("sclp_send failed: %x\n", rc);
+ goto out;
+ }
+ if (sccb.hdr.response_code != 0x0020) {
+ TRACE("copy failed: %x\n", sccb.hdr.response_code);
+ rc = -EIO;
+ goto out;
+ }
+
+ switch (sccb.evbuf.event_status) {
+ case EVSTATE_ALL_STORED:
+ TRACE("all stored\n");
+ case EVSTATE_PART_STORED:
+ TRACE("part stored: %i\n", sccb.evbuf.blk_cnt);
+ break;
+ case EVSTATE_NO_DATA:
+ TRACE("no data\n");
+ default:
+ ERROR_MSG("Error from SCLP while copying hsa. "
+ "Event status = %x\n",
+ sccb.evbuf.event_status);
+ rc = -EIO;
+ }
+out:
+ mutex_unlock(&sdias_mutex);
+ return rc;
+}
+
+int __init sdias_init(void)
+{
+ int rc;
+
+ if (ipl_info.type != IPL_TYPE_FCP_DUMP)
+ return 0;
+ sdias_dbf = debug_register("dump_sdias", 4, 1, 4 * sizeof(long));
+ debug_register_view(sdias_dbf, &debug_sprintf_view);
+ debug_set_level(sdias_dbf, 6);
+ rc = sclp_register(&sclp_sdias_register);
+ if (rc) {
+ ERROR_MSG("sclp register failed\n");
+ return rc;
+ }
+ init_waitqueue_head(&sdias_wq);
+ TRACE("init done\n");
+ return 0;
+}
+
+void __exit sdias_exit(void)
+{
+ debug_unregister(sdias_dbf);
+ sclp_unregister(&sclp_sdias_register);
+}
diff --git a/drivers/s390/char/sclp_tty.c b/drivers/s390/char/sclp_tty.c
index 076816b9d52..e3b3d390b4a 100644
--- a/drivers/s390/char/sclp_tty.c
+++ b/drivers/s390/char/sclp_tty.c
@@ -648,7 +648,7 @@ sclp_eval_textcmd(struct gds_subvector *start,
subvec = start;
while (subvec < end) {
subvec = find_gds_subvector(subvec, end,
- GDS_KEY_SelfDefTextMsg);
+ GDS_KEY_SELFDEFTEXTMSG);
if (!subvec)
break;
sclp_eval_selfdeftextmsg((struct gds_subvector *)(subvec + 1),
@@ -664,7 +664,7 @@ sclp_eval_cpmsu(struct gds_vector *start, struct gds_vector *end)
vec = start;
while (vec < end) {
- vec = find_gds_vector(vec, end, GDS_ID_TextCmd);
+ vec = find_gds_vector(vec, end, GDS_ID_TEXTCMD);
if (!vec)
break;
sclp_eval_textcmd((struct gds_subvector *)(vec + 1),
@@ -703,7 +703,7 @@ sclp_tty_state_change(struct sclp_register *reg)
static struct sclp_register sclp_input_event =
{
- .receive_mask = EvTyp_OpCmd_Mask | EvTyp_PMsgCmd_Mask,
+ .receive_mask = EVTYP_OPCMD_MASK | EVTYP_PMSGCMD_MASK,
.state_change_fn = sclp_tty_state_change,
.receiver_fn = sclp_tty_receiver
};
diff --git a/drivers/s390/char/sclp_vt220.c b/drivers/s390/char/sclp_vt220.c
index f77dc33b5f8..726334757bb 100644
--- a/drivers/s390/char/sclp_vt220.c
+++ b/drivers/s390/char/sclp_vt220.c
@@ -99,8 +99,8 @@ static void sclp_vt220_emit_current(void);
/* Registration structure for our interest in SCLP event buffers */
static struct sclp_register sclp_vt220_register = {
- .send_mask = EvTyp_VT220Msg_Mask,
- .receive_mask = EvTyp_VT220Msg_Mask,
+ .send_mask = EVTYP_VT220MSG_MASK,
+ .receive_mask = EVTYP_VT220MSG_MASK,
.state_change_fn = NULL,
.receiver_fn = sclp_vt220_receiver_fn
};
@@ -202,7 +202,7 @@ sclp_vt220_callback(struct sclp_req *request, void *data)
static int
__sclp_vt220_emit(struct sclp_vt220_request *request)
{
- if (!(sclp_vt220_register.sclp_send_mask & EvTyp_VT220Msg_Mask)) {
+ if (!(sclp_vt220_register.sclp_send_mask & EVTYP_VT220MSG_MASK)) {
request->sclp_req.status = SCLP_REQ_FAILED;
return -EIO;
}
@@ -284,7 +284,7 @@ sclp_vt220_initialize_page(void *page)
sccb->header.length = sizeof(struct sclp_vt220_sccb);
sccb->header.function_code = SCLP_NORMAL_WRITE;
sccb->header.response_code = 0x0000;
- sccb->evbuf.type = EvTyp_VT220Msg;
+ sccb->evbuf.type = EVTYP_VT220MSG;
sccb->evbuf.length = sizeof(struct evbuf_header);
return request;
diff --git a/drivers/s390/char/vmlogrdr.c b/drivers/s390/char/vmlogrdr.c
index b87d3b01993..a5a00e9ae4d 100644
--- a/drivers/s390/char/vmlogrdr.c
+++ b/drivers/s390/char/vmlogrdr.c
@@ -125,7 +125,7 @@ static struct vmlogrdr_priv_t sys_ser[] = {
.recording_name = "EREP",
.minor_num = 0,
.buffer_free = 1,
- .priv_lock = SPIN_LOCK_UNLOCKED,
+ .priv_lock = __SPIN_LOCK_UNLOCKED(sys_ser[0].priv_lock),
.autorecording = 1,
.autopurge = 1,
},
@@ -134,7 +134,7 @@ static struct vmlogrdr_priv_t sys_ser[] = {
.recording_name = "ACCOUNT",
.minor_num = 1,
.buffer_free = 1,
- .priv_lock = SPIN_LOCK_UNLOCKED,
+ .priv_lock = __SPIN_LOCK_UNLOCKED(sys_ser[1].priv_lock),
.autorecording = 1,
.autopurge = 1,
},
@@ -143,7 +143,7 @@ static struct vmlogrdr_priv_t sys_ser[] = {
.recording_name = "SYMPTOM",
.minor_num = 2,
.buffer_free = 1,
- .priv_lock = SPIN_LOCK_UNLOCKED,
+ .priv_lock = __SPIN_LOCK_UNLOCKED(sys_ser[2].priv_lock),
.autorecording = 1,
.autopurge = 1,
}
@@ -385,6 +385,9 @@ static int vmlogrdr_release (struct inode *inode, struct file *filp)
struct vmlogrdr_priv_t * logptr = filp->private_data;
+ iucv_path_sever(logptr->path, NULL);
+ kfree(logptr->path);
+ logptr->path = NULL;
if (logptr->autorecording) {
ret = vmlogrdr_recording(logptr,0,logptr->autopurge);
if (ret)
diff --git a/drivers/s390/char/zcore.c b/drivers/s390/char/zcore.c
new file mode 100644
index 00000000000..89d439316a5
--- /dev/null
+++ b/drivers/s390/char/zcore.c
@@ -0,0 +1,651 @@
+/*
+ * zcore module to export memory content and register sets for creating system
+ * dumps on SCSI disks (zfcpdump). The "zcore/mem" debugfs file shows the same
+ * dump format as s390 standalone dumps.
+ *
+ * For more information please refer to Documentation/s390/zfcpdump.txt
+ *
+ * Copyright IBM Corp. 2003,2007
+ * Author(s): Michael Holzheu
+ */
+
+#include <linux/init.h>
+#include <linux/miscdevice.h>
+#include <linux/utsname.h>
+#include <linux/debugfs.h>
+#include <asm/ipl.h>
+#include <asm/sclp.h>
+#include <asm/setup.h>
+#include <asm/sigp.h>
+#include <asm/uaccess.h>
+#include <asm/debug.h>
+#include <asm/processor.h>
+#include <asm/irqflags.h>
+
+#define TRACE(x...) debug_sprintf_event(zcore_dbf, 1, x)
+#define MSG(x...) printk( KERN_ALERT x )
+#define ERROR_MSG(x...) printk ( KERN_ALERT "DUMP: " x )
+
+#define TO_USER 0
+#define TO_KERNEL 1
+
+enum arch_id {
+ ARCH_S390 = 0,
+ ARCH_S390X = 1,
+};
+
+/* dump system info */
+
+struct sys_info {
+ enum arch_id arch;
+ unsigned long sa_base;
+ u32 sa_size;
+ int cpu_map[NR_CPUS];
+ unsigned long mem_size;
+ union save_area lc_mask;
+};
+
+static struct sys_info sys_info;
+static struct debug_info *zcore_dbf;
+static int hsa_available;
+static struct dentry *zcore_dir;
+static struct dentry *zcore_file;
+
+/*
+ * Copy memory from HSA to kernel or user memory (not reentrant):
+ *
+ * @dest: Kernel or user buffer where memory should be copied to
+ * @src: Start address within HSA where data should be copied
+ * @count: Size of buffer, which should be copied
+ * @mode: Either TO_KERNEL or TO_USER
+ */
+static int memcpy_hsa(void *dest, unsigned long src, size_t count, int mode)
+{
+ int offs, blk_num;
+ static char buf[PAGE_SIZE] __attribute__((__aligned__(PAGE_SIZE)));
+
+ if (count == 0)
+ return 0;
+
+ /* copy first block */
+ offs = 0;
+ if ((src % PAGE_SIZE) != 0) {
+ blk_num = src / PAGE_SIZE + 2;
+ if (sclp_sdias_copy(buf, blk_num, 1)) {
+ TRACE("sclp_sdias_copy() failed\n");
+ return -EIO;
+ }
+ offs = min((PAGE_SIZE - (src % PAGE_SIZE)), count);
+ if (mode == TO_USER) {
+ if (copy_to_user((__force __user void*) dest,
+ buf + (src % PAGE_SIZE), offs))
+ return -EFAULT;
+ } else
+ memcpy(dest, buf + (src % PAGE_SIZE), offs);
+ }
+ if (offs == count)
+ goto out;
+
+ /* copy middle */
+ for (; (offs + PAGE_SIZE) <= count; offs += PAGE_SIZE) {
+ blk_num = (src + offs) / PAGE_SIZE + 2;
+ if (sclp_sdias_copy(buf, blk_num, 1)) {
+ TRACE("sclp_sdias_copy() failed\n");
+ return -EIO;
+ }
+ if (mode == TO_USER) {
+ if (copy_to_user((__force __user void*) dest + offs,
+ buf, PAGE_SIZE))
+ return -EFAULT;
+ } else
+ memcpy(dest + offs, buf, PAGE_SIZE);
+ }
+ if (offs == count)
+ goto out;
+
+ /* copy last block */
+ blk_num = (src + offs) / PAGE_SIZE + 2;
+ if (sclp_sdias_copy(buf, blk_num, 1)) {
+ TRACE("sclp_sdias_copy() failed\n");
+ return -EIO;
+ }
+ if (mode == TO_USER) {
+ if (copy_to_user((__force __user void*) dest + offs, buf,
+ PAGE_SIZE))
+ return -EFAULT;
+ } else
+ memcpy(dest + offs, buf, count - offs);
+out:
+ return 0;
+}
+
+static int memcpy_hsa_user(void __user *dest, unsigned long src, size_t count)
+{
+ return memcpy_hsa((void __force *) dest, src, count, TO_USER);
+}
+
+static int memcpy_hsa_kernel(void *dest, unsigned long src, size_t count)
+{
+ return memcpy_hsa(dest, src, count, TO_KERNEL);
+}
+
+static int memcpy_real(void *dest, unsigned long src, size_t count)
+{
+ unsigned long flags;
+ int rc = -EFAULT;
+ register unsigned long _dest asm("2") = (unsigned long) dest;
+ register unsigned long _len1 asm("3") = (unsigned long) count;
+ register unsigned long _src asm("4") = src;
+ register unsigned long _len2 asm("5") = (unsigned long) count;
+
+ if (count == 0)
+ return 0;
+ flags = __raw_local_irq_stnsm(0xf8); /* switch to real mode */
+ asm volatile (
+ "0: mvcle %1,%2,0x0\n"
+ "1: jo 0b\n"
+ " lhi %0,0x0\n"
+ "2:\n"
+ EX_TABLE(1b,2b)
+ : "+d" (rc)
+ : "d" (_dest), "d" (_src), "d" (_len1), "d" (_len2)
+ : "cc", "memory");
+ __raw_local_irq_ssm(flags);
+
+ return rc;
+}
+
+static int memcpy_real_user(__user void *dest, unsigned long src, size_t count)
+{
+ static char buf[4096];
+ int offs = 0, size;
+
+ while (offs < count) {
+ size = min(sizeof(buf), count - offs);
+ if (memcpy_real(buf, src + offs, size))
+ return -EFAULT;
+ if (copy_to_user(dest + offs, buf, size))
+ return -EFAULT;
+ offs += size;
+ }
+ return 0;
+}
+
+#ifdef __s390x__
+/*
+ * Convert s390x (64 bit) cpu info to s390 (32 bit) cpu info
+ */
+static void __init s390x_to_s390_regs(union save_area *out, union save_area *in,
+ int cpu)
+{
+ int i;
+
+ for (i = 0; i < 16; i++) {
+ out->s390.gp_regs[i] = in->s390x.gp_regs[i] & 0x00000000ffffffff;
+ out->s390.acc_regs[i] = in->s390x.acc_regs[i];
+ out->s390.ctrl_regs[i] =
+ in->s390x.ctrl_regs[i] & 0x00000000ffffffff;
+ }
+ /* locore for 31 bit has only space for fpregs 0,2,4,6 */
+ out->s390.fp_regs[0] = in->s390x.fp_regs[0];
+ out->s390.fp_regs[1] = in->s390x.fp_regs[2];
+ out->s390.fp_regs[2] = in->s390x.fp_regs[4];
+ out->s390.fp_regs[3] = in->s390x.fp_regs[6];
+ memcpy(&(out->s390.psw[0]), &(in->s390x.psw[0]), 4);
+ out->s390.psw[1] |= 0x8; /* set bit 12 */
+ memcpy(&(out->s390.psw[4]),&(in->s390x.psw[12]), 4);
+ out->s390.psw[4] |= 0x80; /* set (31bit) addressing bit */
+ out->s390.pref_reg = in->s390x.pref_reg;
+ out->s390.timer = in->s390x.timer;
+ out->s390.clk_cmp = in->s390x.clk_cmp;
+}
+
+static void __init s390x_to_s390_save_areas(void)
+{
+ int i = 1;
+ static union save_area tmp;
+
+ while (zfcpdump_save_areas[i]) {
+ s390x_to_s390_regs(&tmp, zfcpdump_save_areas[i], i);
+ memcpy(zfcpdump_save_areas[i], &tmp, sizeof(tmp));
+ i++;
+ }
+}
+
+#endif /* __s390x__ */
+
+static int __init init_cpu_info(enum arch_id arch)
+{
+ union save_area *sa;
+
+ /* get info for boot cpu from lowcore, stored in the HSA */
+
+ sa = kmalloc(sizeof(*sa), GFP_KERNEL);
+ if (!sa) {
+ ERROR_MSG("kmalloc failed: %s: %i\n",__FUNCTION__, __LINE__);
+ return -ENOMEM;
+ }
+ if (memcpy_hsa_kernel(sa, sys_info.sa_base, sys_info.sa_size) < 0) {
+ ERROR_MSG("could not copy from HSA\n");
+ kfree(sa);
+ return -EIO;
+ }
+ zfcpdump_save_areas[0] = sa;
+
+#ifdef __s390x__
+ /* convert s390x regs to s390, if we are dumping an s390 Linux */
+
+ if (arch == ARCH_S390)
+ s390x_to_s390_save_areas();
+#endif
+
+ return 0;
+}
+
+static DEFINE_MUTEX(zcore_mutex);
+
+#define DUMP_VERSION 0x3
+#define DUMP_MAGIC 0xa8190173618f23fdULL
+#define DUMP_ARCH_S390X 2
+#define DUMP_ARCH_S390 1
+#define HEADER_SIZE 4096
+
+/* dump header dumped according to s390 crash dump format */
+
+struct zcore_header {
+ u64 magic;
+ u32 version;
+ u32 header_size;
+ u32 dump_level;
+ u32 page_size;
+ u64 mem_size;
+ u64 mem_start;
+ u64 mem_end;
+ u32 num_pages;
+ u32 pad1;
+ u64 tod;
+ cpuid_t cpu_id;
+ u32 arch_id;
+ u32 build_arch;
+ char pad2[4016];
+} __attribute__((packed,__aligned__(16)));
+
+static struct zcore_header zcore_header = {
+ .magic = DUMP_MAGIC,
+ .version = DUMP_VERSION,
+ .header_size = 4096,
+ .dump_level = 0,
+ .page_size = PAGE_SIZE,
+ .mem_start = 0,
+#ifdef __s390x__
+ .build_arch = DUMP_ARCH_S390X,
+#else
+ .build_arch = DUMP_ARCH_S390,
+#endif
+};
+
+/*
+ * Copy lowcore info to buffer. Use map in order to copy only register parts.
+ *
+ * @buf: User buffer
+ * @sa: Pointer to save area
+ * @sa_off: Offset in save area to copy
+ * @len: Number of bytes to copy
+ */
+static int copy_lc(void __user *buf, void *sa, int sa_off, int len)
+{
+ int i;
+ char *lc_mask = (char*)&sys_info.lc_mask;
+
+ for (i = 0; i < len; i++) {
+ if (!lc_mask[i + sa_off])
+ continue;
+ if (copy_to_user(buf + i, sa + sa_off + i, 1))
+ return -EFAULT;
+ }
+ return 0;
+}
+
+/*
+ * Copy lowcores info to memory, if necessary
+ *
+ * @buf: User buffer
+ * @addr: Start address of buffer in dump memory
+ * @count: Size of buffer
+ */
+static int zcore_add_lc(char __user *buf, unsigned long start, size_t count)
+{
+ unsigned long end;
+ int i = 0;
+
+ if (count == 0)
+ return 0;
+
+ end = start + count;
+ while (zfcpdump_save_areas[i]) {
+ unsigned long cp_start, cp_end; /* copy range */
+ unsigned long sa_start, sa_end; /* save area range */
+ unsigned long prefix;
+ unsigned long sa_off, len, buf_off;
+
+ if (sys_info.arch == ARCH_S390)
+ prefix = zfcpdump_save_areas[i]->s390.pref_reg;
+ else
+ prefix = zfcpdump_save_areas[i]->s390x.pref_reg;
+
+ sa_start = prefix + sys_info.sa_base;
+ sa_end = prefix + sys_info.sa_base + sys_info.sa_size;
+
+ if ((end < sa_start) || (start > sa_end))
+ goto next;
+ cp_start = max(start, sa_start);
+ cp_end = min(end, sa_end);
+
+ buf_off = cp_start - start;
+ sa_off = cp_start - sa_start;
+ len = cp_end - cp_start;
+
+ TRACE("copy_lc for: %lx\n", start);
+ if (copy_lc(buf + buf_off, zfcpdump_save_areas[i], sa_off, len))
+ return -EFAULT;
+next:
+ i++;
+ }
+ return 0;
+}
+
+/*
+ * Read routine for zcore character device
+ * First 4K are dump header
+ * Next 32MB are HSA Memory
+ * Rest is read from absolute Memory
+ */
+static ssize_t zcore_read(struct file *file, char __user *buf, size_t count,
+ loff_t *ppos)
+{
+ unsigned long mem_start; /* Start address in memory */
+ size_t mem_offs; /* Offset in dump memory */
+ size_t hdr_count; /* Size of header part of output buffer */
+ size_t size;
+ int rc;
+
+ mutex_lock(&zcore_mutex);
+
+ if (*ppos > (sys_info.mem_size + HEADER_SIZE)) {
+ rc = -EINVAL;
+ goto fail;
+ }
+
+ count = min(count, (size_t) (sys_info.mem_size + HEADER_SIZE - *ppos));
+
+ /* Copy dump header */
+ if (*ppos < HEADER_SIZE) {
+ size = min(count, (size_t) (HEADER_SIZE - *ppos));
+ if (copy_to_user(buf, &zcore_header + *ppos, size)) {
+ rc = -EFAULT;
+ goto fail;
+ }
+ hdr_count = size;
+ mem_start = 0;
+ } else {
+ hdr_count = 0;
+ mem_start = *ppos - HEADER_SIZE;
+ }
+
+ mem_offs = 0;
+
+ /* Copy from HSA data */
+ if (*ppos < (ZFCPDUMP_HSA_SIZE + HEADER_SIZE)) {
+ size = min((count - hdr_count), (size_t) (ZFCPDUMP_HSA_SIZE
+ - mem_start));
+ rc = memcpy_hsa_user(buf + hdr_count, mem_start, size);
+ if (rc)
+ goto fail;
+
+ mem_offs += size;
+ }
+
+ /* Copy from real mem */
+ size = count - mem_offs - hdr_count;
+ rc = memcpy_real_user(buf + hdr_count + mem_offs, mem_start + mem_offs,
+ size);
+ if (rc)
+ goto fail;
+
+ /*
+ * Since s390 dump analysis tools like lcrash or crash
+ * expect register sets in the prefix pages of the cpus,
+ * we copy them into the read buffer, if necessary.
+ * buf + hdr_count: Start of memory part of output buffer
+ * mem_start: Start memory address to copy from
+ * count - hdr_count: Size of memory area to copy
+ */
+ if (zcore_add_lc(buf + hdr_count, mem_start, count - hdr_count)) {
+ rc = -EFAULT;
+ goto fail;
+ }
+ *ppos += count;
+fail:
+ mutex_unlock(&zcore_mutex);
+ return (rc < 0) ? rc : count;
+}
+
+static int zcore_open(struct inode *inode, struct file *filp)
+{
+ if (!hsa_available)
+ return -ENODATA;
+ else
+ return capable(CAP_SYS_RAWIO) ? 0 : -EPERM;
+}
+
+static int zcore_release(struct inode *inode, struct file *filep)
+{
+ diag308(DIAG308_REL_HSA, NULL);
+ hsa_available = 0;
+ return 0;
+}
+
+static loff_t zcore_lseek(struct file *file, loff_t offset, int orig)
+{
+ loff_t rc;
+
+ mutex_lock(&zcore_mutex);
+ switch (orig) {
+ case 0:
+ file->f_pos = offset;
+ rc = file->f_pos;
+ break;
+ case 1:
+ file->f_pos += offset;
+ rc = file->f_pos;
+ break;
+ default:
+ rc = -EINVAL;
+ }
+ mutex_unlock(&zcore_mutex);
+ return rc;
+}
+
+static struct file_operations zcore_fops = {
+ .owner = THIS_MODULE,
+ .llseek = zcore_lseek,
+ .read = zcore_read,
+ .open = zcore_open,
+ .release = zcore_release,
+};
+
+
+static void __init set_s390_lc_mask(union save_area *map)
+{
+ memset(&map->s390.ext_save, 0xff, sizeof(map->s390.ext_save));
+ memset(&map->s390.timer, 0xff, sizeof(map->s390.timer));
+ memset(&map->s390.clk_cmp, 0xff, sizeof(map->s390.clk_cmp));
+ memset(&map->s390.psw, 0xff, sizeof(map->s390.psw));
+ memset(&map->s390.pref_reg, 0xff, sizeof(map->s390.pref_reg));
+ memset(&map->s390.acc_regs, 0xff, sizeof(map->s390.acc_regs));
+ memset(&map->s390.fp_regs, 0xff, sizeof(map->s390.fp_regs));
+ memset(&map->s390.gp_regs, 0xff, sizeof(map->s390.gp_regs));
+ memset(&map->s390.ctrl_regs, 0xff, sizeof(map->s390.ctrl_regs));
+}
+
+static void __init set_s390x_lc_mask(union save_area *map)
+{
+ memset(&map->s390x.fp_regs, 0xff, sizeof(map->s390x.fp_regs));
+ memset(&map->s390x.gp_regs, 0xff, sizeof(map->s390x.gp_regs));
+ memset(&map->s390x.psw, 0xff, sizeof(map->s390x.psw));
+ memset(&map->s390x.pref_reg, 0xff, sizeof(map->s390x.pref_reg));
+ memset(&map->s390x.fp_ctrl_reg, 0xff, sizeof(map->s390x.fp_ctrl_reg));
+ memset(&map->s390x.tod_reg, 0xff, sizeof(map->s390x.tod_reg));
+ memset(&map->s390x.timer, 0xff, sizeof(map->s390x.timer));
+ memset(&map->s390x.clk_cmp, 0xff, sizeof(map->s390x.clk_cmp));
+ memset(&map->s390x.acc_regs, 0xff, sizeof(map->s390x.acc_regs));
+ memset(&map->s390x.ctrl_regs, 0xff, sizeof(map->s390x.ctrl_regs));
+}
+
+/*
+ * Initialize dump globals for a given architecture
+ */
+static int __init sys_info_init(enum arch_id arch)
+{
+ switch (arch) {
+ case ARCH_S390X:
+ MSG("DETECTED 'S390X (64 bit) OS'\n");
+ sys_info.sa_base = SAVE_AREA_BASE_S390X;
+ sys_info.sa_size = sizeof(struct save_area_s390x);
+ set_s390x_lc_mask(&sys_info.lc_mask);
+ break;
+ case ARCH_S390:
+ MSG("DETECTED 'S390 (32 bit) OS'\n");
+ sys_info.sa_base = SAVE_AREA_BASE_S390;
+ sys_info.sa_size = sizeof(struct save_area_s390);
+ set_s390_lc_mask(&sys_info.lc_mask);
+ break;
+ default:
+ ERROR_MSG("unknown architecture 0x%x.\n",arch);
+ return -EINVAL;
+ }
+ sys_info.arch = arch;
+ if (init_cpu_info(arch)) {
+ ERROR_MSG("get cpu info failed\n");
+ return -ENOMEM;
+ }
+ sys_info.mem_size = real_memory_size;
+
+ return 0;
+}
+
+static int __init check_sdias(void)
+{
+ int rc, act_hsa_size;
+
+ rc = sclp_sdias_blk_count();
+ if (rc < 0) {
+ ERROR_MSG("Could not determine HSA size\n");
+ return rc;
+ }
+ act_hsa_size = (rc - 1) * PAGE_SIZE;
+ if (act_hsa_size < ZFCPDUMP_HSA_SIZE) {
+ ERROR_MSG("HSA size too small: %i\n", act_hsa_size);
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static void __init zcore_header_init(int arch, struct zcore_header *hdr)
+{
+ if (arch == ARCH_S390X)
+ hdr->arch_id = DUMP_ARCH_S390X;
+ else
+ hdr->arch_id = DUMP_ARCH_S390;
+ hdr->mem_size = sys_info.mem_size;
+ hdr->mem_end = sys_info.mem_size;
+ hdr->num_pages = sys_info.mem_size / PAGE_SIZE;
+ hdr->tod = get_clock();
+ get_cpu_id(&hdr->cpu_id);
+}
+
+extern int sdias_init(void);
+
+static int __init zcore_init(void)
+{
+ unsigned char arch;
+ int rc;
+
+ if (ipl_info.type != IPL_TYPE_FCP_DUMP)
+ return -ENODATA;
+
+ zcore_dbf = debug_register("zcore", 4, 1, 4 * sizeof(long));
+ debug_register_view(zcore_dbf, &debug_sprintf_view);
+ debug_set_level(zcore_dbf, 6);
+
+ TRACE("devno: %x\n", ipl_info.data.fcp.dev_id.devno);
+ TRACE("wwpn: %llx\n", (unsigned long long) ipl_info.data.fcp.wwpn);
+ TRACE("lun: %llx\n", (unsigned long long) ipl_info.data.fcp.lun);
+
+ rc = sdias_init();
+ if (rc)
+ goto fail;
+
+ rc = check_sdias();
+ if (rc) {
+ ERROR_MSG("Dump initialization failed\n");
+ goto fail;
+ }
+
+ rc = memcpy_hsa_kernel(&arch, __LC_AR_MODE_ID, 1);
+ if (rc) {
+ ERROR_MSG("sdial memcpy for arch id failed\n");
+ goto fail;
+ }
+
+#ifndef __s390x__
+ if (arch == ARCH_S390X) {
+ ERROR_MSG("32 bit dumper can't dump 64 bit system!\n");
+ rc = -EINVAL;
+ goto fail;
+ }
+#endif
+
+ rc = sys_info_init(arch);
+ if (rc) {
+ ERROR_MSG("arch init failed\n");
+ goto fail;
+ }
+
+ zcore_header_init(arch, &zcore_header);
+
+ zcore_dir = debugfs_create_dir("zcore" , NULL);
+ if (!zcore_dir) {
+ rc = -ENOMEM;
+ goto fail;
+ }
+ zcore_file = debugfs_create_file("mem", S_IRUSR, zcore_dir, NULL,
+ &zcore_fops);
+ if (!zcore_file) {
+ debugfs_remove(zcore_dir);
+ rc = -ENOMEM;
+ goto fail;
+ }
+ hsa_available = 1;
+ return 0;
+
+fail:
+ diag308(DIAG308_REL_HSA, NULL);
+ return rc;
+}
+
+extern void sdias_exit(void);
+
+static void __exit zcore_exit(void)
+{
+ debug_unregister(zcore_dbf);
+ sdias_exit();
+ diag308(DIAG308_REL_HSA, NULL);
+}
+
+MODULE_AUTHOR("Copyright IBM Corp. 2003,2007");
+MODULE_DESCRIPTION("zcore module for zfcpdump support");
+MODULE_LICENSE("GPL");
+
+subsys_initcall(zcore_init);
+module_exit(zcore_exit);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-01 09:30:00 +0000