#include <asm/irq_regs.h>
#include <asm/setup.h>
#include <asm/reset.h>
+#include <asm/ipl.h>
#include "airq.h"
#include "cio.h"
#include "css.h"
* Use tpi to get a pending interrupt, call the interrupt handler and
* return a pointer to the subchannel structure.
*/
-static inline int
+static int
cio_tpi(void)
{
struct tpi_info *tpi_info;
return 1;
}
-static inline int
+static int
cio_start_handle_notoper(struct subchannel *sch, __u8 lpm)
{
char dbf_text[15];
* This device must not be known to Linux. So we simply
* say that there is no device and return ENODEV.
*/
- CIO_MSG_EVENT(0, "Blacklisted device detected "
+ CIO_MSG_EVENT(4, "Blacklisted device detected "
"at devno %04X, subchannel set %x\n",
sch->schib.pmcw.dev, sch->schid.ssid);
err = -ENODEV;
* Make sure that the i/o interrupt did not "overtake"
* the last HZ timer interrupt.
*/
- account_ticks();
+ account_ticks(S390_lowcore.int_clock);
/*
* Get interrupt information from lowcore
*/
}
#endif
-static inline int
+static int
__disable_subchannel_easy(struct subchannel_id schid, struct schib *schib)
{
int retry, cc;
return -EBUSY; /* uhm... */
}
-static inline int
+/* we can't use the normal udelay here, since it enables external interrupts */
+
+static void udelay_reset(unsigned long usecs)
+{
+ uint64_t start_cc, end_cc;
+
+ asm volatile ("STCK %0" : "=m" (start_cc));
+ do {
+ cpu_relax();
+ asm volatile ("STCK %0" : "=m" (end_cc));
+ } while (((end_cc - start_cc)/4096) < usecs);
+}
+
+static int
__clear_subchannel_easy(struct subchannel_id schid)
{
int retry;
if (schid_equal(&ti.schid, &schid))
return 0;
}
- udelay(100);
+ udelay_reset(100);
}
return -EBUSY;
}
int rc;
pgm_check_occured = 0;
- s390_reset_pgm_handler = cio_reset_pgm_check_handler;
+ s390_base_pgm_handler_fn = cio_reset_pgm_check_handler;
rc = stsch(schid, addr);
- s390_reset_pgm_handler = NULL;
+ s390_base_pgm_handler_fn = NULL;
- /* The program check handler could have changed pgm_check_occured */
+ /* The program check handler could have changed pgm_check_occured. */
barrier();
if (pgm_check_occured)
/* Reset subchannels. */
for_each_subchannel(__shutdown_subchannel_easy, NULL);
/* Reset channel paths. */
- s390_reset_mcck_handler = s390_reset_chpids_mcck_handler;
+ s390_base_mcck_handler_fn = s390_reset_chpids_mcck_handler;
/* Enable channel report machine checks. */
__ctl_set_bit(14, 28);
/* Temporarily reenable machine checks. */
local_mcck_disable();
/* Disable channel report machine checks. */
__ctl_clear_bit(14, 28);
- s390_reset_mcck_handler = NULL;
+ s390_base_mcck_handler_fn = NULL;
}
static struct reset_call css_reset_call = {