[POWERPC] ibmebus: Add device creation and bus probing based on of_device

[linux-2.6-omap-h63xx.git] / drivers / s390 / s390mach.c

diff --git a/drivers/s390/s390mach.c b/drivers/s390/s390mach.c
index 479364d0332a062c2424fbf16728464fb3c29b7a..644a06eba828d7d48e386fdfdfe64424b36f13db 100644 (file)
--- a/drivers/s390/s390mach.c
+++ b/drivers/s390/s390mach.c
@@ -13,22 +13,19 @@
 #include <linux/errno.h>
 #include <linux/workqueue.h>
 #include <linux/time.h>
+#include <linux/device.h>
 #include <linux/kthread.h>
-
+#include <asm/etr.h>
 #include <asm/lowcore.h>
-
+#include <asm/cio.h>
+#include "cio/cio.h"
+#include "cio/chsc.h"
+#include "cio/css.h"
+#include "cio/chp.h"
 #include "s390mach.h"
 
 static struct semaphore m_sem;
 
-extern int css_process_crw(int, int);
-extern int chsc_process_crw(void);
-extern int chp_process_crw(int, int);
-extern void css_reiterate_subchannels(void);
-
-extern struct workqueue_struct *slow_path_wq;
-extern struct work_struct slow_path_work;
-
 static NORET_TYPE void
 s390_handle_damage(char *msg)
 {
@@ -48,14 +45,13 @@ static int
 s390_collect_crw_info(void *param)
 {
        struct crw crw[2];
-       int ccode, ret, slow;
+       int ccode;
        struct semaphore *sem;
        unsigned int chain;
 
        sem = (struct semaphore *)param;
 repeat:
        down_interruptible(sem);
-       slow = 0;
        chain = 0;
        while (1) {
                if (unlikely(chain > 1)) {
@@ -88,9 +84,8 @@ repeat:
                /* Check for overflows. */
                if (crw[chain].oflw) {
                        pr_debug("%s: crw overflow detected!\n", __FUNCTION__);
-                       css_reiterate_subchannels();
+                       css_schedule_eval_all();
                        chain = 0;
-                       slow = 1;
                        continue;
                }
                switch (crw[chain].rsc) {
@@ -98,10 +93,7 @@ repeat:
                        if (crw[0].chn && !chain)
                                break;
                        pr_debug("source is subchannel %04X\n", crw[0].rsid);
-                       ret = css_process_crw (crw[0].rsid,
-                                              chain ? crw[1].rsid : 0);
-                       if (ret == -EAGAIN)
-                               slow = 1;
+                       css_process_crw(crw[0].rsid, chain ? crw[1].rsid : 0);
                        break;
                case CRW_RSC_MONITOR:
                        pr_debug("source is monitoring facility\n");
@@ -120,28 +112,23 @@ repeat:
                        }
                        switch (crw[0].erc) {
                        case CRW_ERC_IPARM: /* Path has come. */
-                               ret = chp_process_crw(crw[0].rsid, 1);
+                               chp_process_crw(crw[0].rsid, 1);
                                break;
                        case CRW_ERC_PERRI: /* Path has gone. */
                        case CRW_ERC_PERRN:
-                               ret = chp_process_crw(crw[0].rsid, 0);
+                               chp_process_crw(crw[0].rsid, 0);
                                break;
                        default:
                                pr_debug("Don't know how to handle erc=%x\n",
                                         crw[0].erc);
-                               ret = 0;
                        }
-                       if (ret == -EAGAIN)
-                               slow = 1;
                        break;
                case CRW_RSC_CONFIG:
                        pr_debug("source is configuration-alert facility\n");
                        break;
                case CRW_RSC_CSS:
                        pr_debug("source is channel subsystem\n");
-                       ret = chsc_process_crw();
-                       if (ret == -EAGAIN)
-                               slow = 1;
+                       chsc_process_crw();
                        break;
                default:
                        pr_debug("unknown source\n");
@@ -150,8 +137,6 @@ repeat:
                /* chain is always 0 or 1 here. */
                chain = crw[chain].chn ? chain + 1 : 0;
        }
-       if (slow)
-               queue_work(slow_path_wq, &slow_path_work);
        goto repeat;
        return 0;
 }
@@ -208,7 +193,7 @@ s390_handle_mcck(void)
                 */
                __ctl_clear_bit(14, 24);        /* Disable WARNING MCH */
                if (xchg(&mchchk_wng_posted, 1) == 0)
-                       kill_proc(1, SIGPWR, 1);
+                       kill_cad_pid(SIGPWR, 1);
        }
 #endif
 
@@ -470,6 +455,19 @@ s390_do_machine_check(struct pt_regs *regs)
                        s390_handle_damage("unable to revalidate registers.");
        }
 
+       if (mci->cd) {
+               /* Timing facility damage */
+               s390_handle_damage("TOD clock damaged");
+       }
+
+       if (mci->ed && mci->ec) {
+               /* External damage */
+               if (S390_lowcore.external_damage_code & (1U << ED_ETR_SYNC))
+                       etr_sync_check();
+               if (S390_lowcore.external_damage_code & (1U << ED_ETR_SWITCH))
+                       etr_switch_to_local();
+       }
+
        if (mci->se)
                /* Storage error uncorrected */
                s390_handle_damage("received storage error uncorrected "
@@ -508,7 +506,7 @@ static int
 machine_check_init(void)
 {
        init_MUTEX_LOCKED(&m_sem);
-       ctl_clear_bit(14, 25);  /* disable external damage MCH */
+       ctl_set_bit(14, 25);    /* enable external damage MCH */
        ctl_set_bit(14, 27);    /* enable system recovery MCH */
 #ifdef CONFIG_MACHCHK_WARNING
        ctl_set_bit(14, 24);    /* enable warning MCH */
@@ -529,7 +527,11 @@ arch_initcall(machine_check_init);
 static int __init
 machine_check_crw_init (void)
 {
-       kthread_run(s390_collect_crw_info, &m_sem, "kmcheck");
+       struct task_struct *task;
+
+       task = kthread_run(s390_collect_crw_info, &m_sem, "kmcheck");
+       if (IS_ERR(task))
+               return PTR_ERR(task);
        ctl_set_bit(14, 28);    /* enable channel report MCH */
        return 0;
 }