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Virtual SMP support for the 34K.

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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle
2005-08-17 17:44:08 +00:00
parent d03d0a5775
commit 340ee4b98c
9 changed files with 450 additions and 15 deletions
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arch/mips/kernel/vpe.c
+8 -7
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@@ -32,7 +32,7 @@
* mknod /dev/vpe0 c 63 0
* mknod /dev/vpe1 c 63 1
*/
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/fs.h>
@@ -49,6 +49,7 @@
#include <linux/poll.h>
#include <linux/bootmem.h>
#include <asm/mipsregs.h>
#include <asm/mipsmtregs.h>
#include <asm/cacheflush.h>
#include <asm/atomic.h>
#include <asm/cpu.h>
@@ -697,7 +698,7 @@ int vpe_run(vpe_t * v)
dvpe();
/* Put MVPE's into 'configuration state' */
write_c0_mvpcontrol(read_c0_mvpcontrol() | MVPCONTROL_VPC);
set_c0_mvpcontrol(MVPCONTROL_VPC);
if (!list_empty(&v->tc)) {
if ((t = list_entry(v->tc.next, struct tc, tc)) == NULL) {
@@ -760,7 +761,7 @@ int vpe_run(vpe_t * v)
write_vpe_c0_cause(0);
/* take system out of configuration state */
write_c0_mvpcontrol(read_c0_mvpcontrol() & ~MVPCONTROL_VPC);
clear_c0_mvpcontrol(MVPCONTROL_VPC);
/* clear interrupts enabled IE, ERL, EXL, and KSU from c0 status */
write_vpe_c0_status(read_vpe_c0_status() & ~(ST0_ERL | ST0_KSU | ST0_IE | ST0_EXL));
@@ -1134,7 +1135,7 @@ int vpe_free(vpe_handle vpe)
evpe_flags = dvpe();
/* Put MVPE's into 'configuration state' */
write_c0_mvpcontrol(read_c0_mvpcontrol() | MVPCONTROL_VPC);
set_c0_mvpcontrol(MVPCONTROL_VPC);
settc(t->index);
write_vpe_c0_vpeconf0(read_vpe_c0_vpeconf0() & ~VPECONF0_VPA);
@@ -1145,7 +1146,7 @@ int vpe_free(vpe_handle vpe)
v->state = VPE_STATE_UNUSED;
write_c0_mvpcontrol(read_c0_mvpcontrol() & ~MVPCONTROL_VPC);
clear_c0_mvpcontrol(MVPCONTROL_VPC);
evpe(evpe_flags);
return 0;
@@ -1191,7 +1192,7 @@ static int __init vpe_module_init(void)
dvpe();
/* Put MVPE's into 'configuration state' */
write_c0_mvpcontrol(read_c0_mvpcontrol() | MVPCONTROL_VPC);
set_c0_mvpcontrol(MVPCONTROL_VPC);
/* dump_mtregs(); */
@@ -1270,7 +1271,7 @@ static int __init vpe_module_init(void)
}
/* release config state */
write_c0_mvpcontrol(read_c0_mvpcontrol() & ~MVPCONTROL_VPC);
clear_c0_mvpcontrol(MVPCONTROL_VPC);
return 0;
}