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[MIPS] MT: Enable coexistence of AP/SP with VSMP and SMTC.

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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle
2007-07-27 19:31:10 +01:00
parent c3a005f4b6
commit 07cc0c9e65
7 changed files with 203 additions and 169 deletions
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22
arch/mips/kernel/rtlx.c
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@@ -40,12 +40,11 @@
#include <asm/atomic.h>
#include <asm/cpu.h>
#include <asm/processor.h>
#include <asm/mips_mt.h>
#include <asm/system.h>
#include <asm/vpe.h>
#include <asm/rtlx.h>
#define RTLX_TARG_VPE 1
static struct rtlx_info *rtlx;
static int major;
static char module_name[] = "rtlx";
@@ -165,10 +164,10 @@ int rtlx_open(int index, int can_sleep)
}
if (rtlx == NULL) {
if( (p = vpe_get_shared(RTLX_TARG_VPE)) == NULL) {
if( (p = vpe_get_shared(tclimit)) == NULL) {
if (can_sleep) {
__wait_event_interruptible(channel_wqs[index].lx_queue,
(p = vpe_get_shared(RTLX_TARG_VPE)),
(p = vpe_get_shared(tclimit)),
ret);
if (ret)
goto out_fail;
@@ -477,6 +476,19 @@ static int rtlx_module_init(void)
struct device *dev;
int i, err;
if (!cpu_has_mipsmt) {
printk("VPE loader: not a MIPS MT capable processor\n");
return -ENODEV;
}
if (tclimit == 0) {
printk(KERN_WARNING "No TCs reserved for AP/SP, not "
"initializing RTLX.\nPass maxtcs=<n> argument as kernel "
"argument\n");
return -ENODEV;
}
major = register_chrdev(0, module_name, &rtlx_fops);
if (major < 0) {
printk(register_chrdev_failed);
@@ -501,7 +513,7 @@ static int rtlx_module_init(void)
/* set up notifiers */
notify.start = starting;
notify.stop = stopping;
vpe_notify(RTLX_TARG_VPE, &notify);
vpe_notify(tclimit, &notify);
if (cpu_has_vint)
set_vi_handler(MIPS_CPU_RTLX_IRQ, rtlx_dispatch);