#include <asm/irq_regs.h>
#include <asm/setup.h>
#include <asm/reset.h>
+#include <asm/ipl.h>
+#include <asm/chpid.h>
#include "airq.h"
#include "cio.h"
#include "css.h"
#include "ioasm.h"
#include "blacklist.h"
#include "cio_debug.h"
+#include "chp.h"
#include "../s390mach.h"
debug_info_t *cio_debug_msg_id;
else if (!strcmp (parm, "no"))
cio_show_msg = 0;
else
- printk (KERN_ERR "cio_setup : invalid cio_msg parameter '%s'",
- parm);
+ printk(KERN_ERR "cio: cio_setup: "
+ "invalid cio_msg parameter '%s'", parm);
return 1;
}
goto out_unregister;
debug_register_view (cio_debug_crw_id, &debug_sprintf_view);
debug_set_level (cio_debug_crw_id, 2);
- pr_debug("debugging initialized\n");
return 0;
out_unregister:
debug_unregister (cio_debug_trace_id);
if (cio_debug_crw_id)
debug_unregister (cio_debug_crw_id);
- pr_debug("could not initialize debugging\n");
+ printk(KERN_WARNING"cio: could not initialize debugging\n");
return -1;
}
* 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];
*/
if (sch->st != 0) {
CIO_DEBUG(KERN_INFO, 0,
- "Subchannel 0.%x.%04x reports "
+ "cio: Subchannel 0.%x.%04x reports "
"non-I/O subchannel type %04X\n",
sch->schid.ssid, sch->schid.sch_no, sch->st);
/* We stop here for non-io subchannels. */
* 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;
goto out;
}
- sch->opm = 0xff;
- if (!cio_is_console(sch->schid))
- chsc_validate_chpids(sch);
+ if (cio_is_console(sch->schid))
+ sch->opm = 0xff;
+ else
+ sch->opm = chp_get_sch_opm(sch);
sch->lpm = sch->schib.pmcw.pam & sch->opm;
CIO_DEBUG(KERN_INFO, 0,
- "Detected device %04x on subchannel 0.%x.%04X"
+ "cio: Detected device %04x on subchannel 0.%x.%04X"
" - PIM = %02X, PAM = %02X, POM = %02X\n",
sch->schib.pmcw.dev, sch->schid.ssid,
sch->schid.sch_no, sch->schib.pmcw.pim,
sch->schib.pmcw.ena = 0;
if ((sch->lpm & (sch->lpm - 1)) != 0)
sch->schib.pmcw.mp = 1; /* multipath mode */
+ /* clean up possible residual cmf stuff */
+ sch->schib.pmcw.mme = 0;
+ sch->schib.pmcw.mbfc = 0;
+ sch->schib.pmcw.mbi = 0;
+ sch->schib.mba = 0;
return 0;
out:
if (!cio_is_console(schid))
* 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
*/
/* unlike in 2.4, we cannot autoprobe here, since
* the channel subsystem is not fully initialized.
* With some luck, the HWC console can take over */
- printk(KERN_WARNING "No ccw console found!\n");
+ printk(KERN_WARNING "cio: No ccw console found!\n");
return -1;
}
return console_irq;
}
#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)
{
int i, ret;
unsigned long long timeout;
+ struct chp_id chpid;
/* 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_enable();
+ chp_id_init(&chpid);
for (i = 0; i <= __MAX_CHPID; i++) {
- ret = rchp(i);
+ chpid.id = i;
+ ret = rchp(chpid);
if ((ret == 0) || (ret == 2))
/*
* rchp either succeeded, or another rchp is already
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 = {
do_reipl_asm(*((__u32*)&schid));
}
-extern struct schib ipl_schib;
-
-/*
- * ipl_save_parameters gets called very early. It is not allowed to access
- * anything in the bss section at all. The bss section is not cleared yet,
- * but may contain some ipl parameters written by the firmware.
- * These parameters (if present) are copied to 0x2000.
- * To avoid corruption of the ipl parameters, all variables used by this
- * function must reside on the stack or in the data section.
- */
-void ipl_save_parameters(void)
+int __init cio_get_iplinfo(struct cio_iplinfo *iplinfo)
{
struct subchannel_id schid;
- unsigned int *ipl_ptr;
- void *src, *dst;
+ struct schib schib;
schid = *(struct subchannel_id *)__LC_SUBCHANNEL_ID;
if (!schid.one)
- return;
- if (stsch(schid, &ipl_schib))
- return;
- if (!ipl_schib.pmcw.dnv)
- return;
- ipl_devno = ipl_schib.pmcw.dev;
- ipl_flags |= IPL_DEVNO_VALID;
- if (!ipl_schib.pmcw.qf)
- return;
- ipl_flags |= IPL_PARMBLOCK_VALID;
- ipl_ptr = (unsigned int *)__LC_IPL_PARMBLOCK_PTR;
- src = (void *)(unsigned long)*ipl_ptr;
- dst = (void *)IPL_PARMBLOCK_ORIGIN;
- memmove(dst, src, PAGE_SIZE);
- *ipl_ptr = IPL_PARMBLOCK_ORIGIN;
+ return -ENODEV;
+ if (stsch(schid, &schib))
+ return -ENODEV;
+ if (!schib.pmcw.dnv)
+ return -ENODEV;
+ iplinfo->devno = schib.pmcw.dev;
+ iplinfo->is_qdio = schib.pmcw.qf;
+ return 0;
}
projects / linux-2.6 / blobdiff