[S390] cio: Introduce abstract isc definitions.
Replace the numeric values for I/O interruption subclass usage with abstract definitions and collect them all in asm/isc.h. This gives us a better overview of which iscs are actually used and makes it possible to better spread out isc usage in the future. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>hifive-unleashed-5.1
parent
75784c0087
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3a3fc29a6d
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@ -24,6 +24,7 @@
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#include <asm/ipl.h>
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#include <asm/ipl.h>
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#include <asm/chpid.h>
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#include <asm/chpid.h>
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#include <asm/airq.h>
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#include <asm/airq.h>
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#include <asm/isc.h>
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#include <asm/cpu.h>
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#include <asm/cpu.h>
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#include <asm/fcx.h>
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#include <asm/fcx.h>
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#include "cio.h"
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#include "cio.h"
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@ -699,9 +700,9 @@ void wait_cons_dev(void)
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if (!console_subchannel_in_use)
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if (!console_subchannel_in_use)
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return;
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return;
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/* disable all but isc 1 (console device) */
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/* disable all but the console isc */
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__ctl_store (save_cr6, 6, 6);
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__ctl_store (save_cr6, 6, 6);
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cr6 = 0x40000000;
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cr6 = 1UL << (31 - CONSOLE_ISC);
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__ctl_load (cr6, 6, 6);
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__ctl_load (cr6, 6, 6);
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do {
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do {
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@ -783,10 +784,10 @@ cio_probe_console(void)
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}
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}
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/*
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/*
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* enable console I/O-interrupt subclass 1
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* enable console I/O-interrupt subclass
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*/
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*/
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ctl_set_bit(6, 30);
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ctl_set_bit(6, 31 - CONSOLE_ISC);
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console_subchannel.schib.pmcw.isc = 1;
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console_subchannel.schib.pmcw.isc = CONSOLE_ISC;
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console_subchannel.schib.pmcw.intparm =
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console_subchannel.schib.pmcw.intparm =
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(u32)(addr_t)&console_subchannel;
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(u32)(addr_t)&console_subchannel;
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ret = cio_modify(&console_subchannel);
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ret = cio_modify(&console_subchannel);
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@ -802,7 +803,7 @@ cio_release_console(void)
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{
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{
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console_subchannel.schib.pmcw.intparm = 0;
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console_subchannel.schib.pmcw.intparm = 0;
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cio_modify(&console_subchannel);
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cio_modify(&console_subchannel);
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ctl_clear_bit(6, 30);
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ctl_clear_bit(6, 31 - CONSOLE_ISC);
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console_subchannel_in_use = 0;
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console_subchannel_in_use = 0;
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}
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}
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@ -13,6 +13,7 @@
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#include <linux/errno.h>
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#include <linux/errno.h>
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#include <linux/list.h>
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#include <linux/list.h>
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#include <linux/reboot.h>
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#include <linux/reboot.h>
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#include <asm/isc.h>
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#include "../s390mach.h"
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#include "../s390mach.h"
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#include "css.h"
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#include "css.h"
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@ -804,7 +805,8 @@ init_channel_subsystem (void)
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goto out_pseudo;
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goto out_pseudo;
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css_init_done = 1;
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css_init_done = 1;
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ctl_set_bit(6, 28);
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/* Enable default isc for I/O subchannels. */
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ctl_set_bit(6, 31 - IO_SCH_ISC);
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for_each_subchannel(__init_channel_subsystem, NULL);
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for_each_subchannel(__init_channel_subsystem, NULL);
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return 0;
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return 0;
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@ -22,6 +22,7 @@
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#include <asm/cio.h>
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#include <asm/cio.h>
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#include <asm/param.h> /* HZ */
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#include <asm/param.h> /* HZ */
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#include <asm/cmb.h>
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#include <asm/cmb.h>
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#include <asm/isc.h>
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#include "chp.h"
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#include "chp.h"
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#include "cio.h"
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#include "cio.h"
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@ -1121,7 +1122,7 @@ static void io_subchannel_init_fields(struct subchannel *sch)
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else
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else
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sch->opm = chp_get_sch_opm(sch);
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sch->opm = chp_get_sch_opm(sch);
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sch->lpm = sch->schib.pmcw.pam & sch->opm;
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sch->lpm = sch->schib.pmcw.pam & sch->opm;
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sch->isc = cio_is_console(sch->schid) ? 1 : 3;
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sch->isc = cio_is_console(sch->schid) ? CONSOLE_ISC : IO_SCH_ISC;
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CIO_MSG_EVENT(6, "Detected device %04x on subchannel 0.%x.%04X"
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CIO_MSG_EVENT(6, "Detected device %04x on subchannel 0.%x.%04X"
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" - PIM = %02X, PAM = %02X, POM = %02X\n",
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" - PIM = %02X, PAM = %02X, POM = %02X\n",
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@ -2,6 +2,7 @@
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#define _CIO_QDIO_H
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#define _CIO_QDIO_H
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#include <asm/page.h>
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#include <asm/page.h>
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#include <asm/isc.h>
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#include "schid.h"
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#include "schid.h"
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@ -26,7 +27,7 @@
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*/
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*/
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#define IQDIO_FILL_LEVEL_TO_POLL 4
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#define IQDIO_FILL_LEVEL_TO_POLL 4
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#define TIQDIO_THININT_ISC 3
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#define TIQDIO_THININT_ISC QDIO_AIRQ_ISC
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#define TIQDIO_DELAY_TARGET 0
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#define TIQDIO_DELAY_TARGET 0
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#define QDIO_BUSY_BIT_PATIENCE 100 /* in microsecs */
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#define QDIO_BUSY_BIT_PATIENCE 100 /* in microsecs */
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#define QDIO_BUSY_BIT_GIVE_UP 10000000 /* 10 seconds */
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#define QDIO_BUSY_BIT_GIVE_UP 10000000 /* 10 seconds */
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@ -0,0 +1,18 @@
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#ifndef _ASM_S390_ISC_H
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#define _ASM_S390_ISC_H
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/*
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* I/O interruption subclasses used by drivers.
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* Please add all used iscs here so that it is possible to distribute
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* isc usage between drivers.
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* Reminder: 0 is highest priority, 7 lowest.
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*/
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#define MAX_ISC 7
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/* Regular I/O interrupts. */
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#define IO_SCH_ISC 3 /* regular I/O subchannels */
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#define CONSOLE_ISC 1 /* console I/O subchannel */
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/* Adapter interrupts. */
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#define QDIO_AIRQ_ISC IO_SCH_ISC /* I/O subchannel in qdio mode */
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#endif /* _ASM_S390_ISC_H */
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