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| author | Ralf Baechle <ralf@linux-mips.org> | 2007-07-27 19:31:10 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2007-07-31 21:35:24 +0100 |
| commit | 07cc0c9e65d3e262f871ea357dd77b41950b1ca5 (patch) | |
| tree | fa797fa236da6e03c7b778cdc364ac1c3e03b52f /arch/mips/kernel/rtlx.c | |
| parent | c3a005f4b6a7752608e75d016ef8d07c55285e48 (diff) | |
| download | lwn-07cc0c9e65d3e262f871ea357dd77b41950b1ca5.tar.gz lwn-07cc0c9e65d3e262f871ea357dd77b41950b1ca5.zip | |
[MIPS] MT: Enable coexistence of AP/SP with VSMP and SMTC.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel/rtlx.c')
| -rw-r--r-- | arch/mips/kernel/rtlx.c | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/arch/mips/kernel/rtlx.c b/arch/mips/kernel/rtlx.c index 8cf24d716d41..5c040060560e 100644 --- a/arch/mips/kernel/rtlx.c +++ b/arch/mips/kernel/rtlx.c @@ -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, ¬ify); + vpe_notify(tclimit, ¬ify); if (cpu_has_vint) set_vi_handler(MIPS_CPU_RTLX_IRQ, rtlx_dispatch); |