MIPS: MT: Remove kspd.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

5 files changed, 0 insertions, 462 deletions

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 2c580cf59397..3803696e635d 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -2039,16 +2039,6 @@ config MIPS_VPE_APSP_API
         depends on MIPS_VPE_LOADER
         help
 
-config MIPS_APSP_KSPD
-        bool "Enable KSPD"
-        depends on MIPS_VPE_APSP_API
-        default y
-        help
-          KSPD is a kernel daemon that accepts syscall requests from the SP
-          side, actions them and returns the results. It also handles the
-          "exit" syscall notifying other kernel modules the SP program is
-          exiting.  You probably want to say yes here.
-
 config MIPS_CMP
         bool "MIPS CMP framework support"
         depends on SYS_SUPPORTS_MIPS_CMP
diff --git a/arch/mips/include/asm/kspd.h b/arch/mips/include/asm/kspd.h
index 4e9e724c8935..ec6832950ace 100644
--- a/arch/mips/include/asm/kspd.h
+++ b/arch/mips/include/asm/kspd.h
@@ -25,12 +25,8 @@ struct kspd_notifications {
         struct list_head list;
 };
 
-#ifdef CONFIG_MIPS_APSP_KSPD
-extern void kspd_notify(struct kspd_notifications *notify);
-#else
 static inline void kspd_notify(struct kspd_notifications *notify)
 {
 }
-#endif
 
 #endif
diff --git a/arch/mips/kernel/Makefile b/arch/mips/kernel/Makefile
index d6c2a7476bac..e49c4469f73c 100644
--- a/arch/mips/kernel/Makefile
+++ b/arch/mips/kernel/Makefile
@@ -53,7 +53,6 @@ obj-$(CONFIG_CPU_MIPSR2)	+= spram.o
 
 obj-$(CONFIG_MIPS_VPE_LOADER)   += vpe.o
 obj-$(CONFIG_MIPS_VPE_APSP_API) += rtlx.o
-obj-$(CONFIG_MIPS_APSP_KSPD)    += kspd.o
 
 obj-$(CONFIG_I8259)             += i8259.o
 obj-$(CONFIG_IRQ_CPU)           += irq_cpu.o
diff --git a/arch/mips/kernel/kspd.c b/arch/mips/kernel/kspd.c
deleted file mode 100644
index b77f56bbb477..000000000000
--- a/arch/mips/kernel/kspd.c
+++ /dev/null
@@ -1,423 +0,0 @@
-/*
- * Copyright (C) 2005 MIPS Technologies, Inc.  All rights reserved.
- *
- *  This program is free software; you can distribute it and/or modify it
- *  under the terms of the GNU General Public License (Version 2) as
- *  published by the Free Software Foundation.
- *
- *  This program is distributed in the hope it will be useful, but WITHOUT
- *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- *  for more details.
- *
- *  You should have received a copy of the GNU General Public License along
- *  with this program; if not, write to the Free Software Foundation, Inc.,
- *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- */
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <linux/unistd.h>
-#include <linux/file.h>
-#include <linux/fdtable.h>
-#include <linux/fs.h>
-#include <linux/syscalls.h>
-#include <linux/workqueue.h>
-#include <linux/errno.h>
-#include <linux/list.h>
-
-#include <asm/vpe.h>
-#include <asm/rtlx.h>
-#include <asm/kspd.h>
-
-static struct workqueue_struct *workqueue;
-static struct work_struct work;
-
-extern unsigned long cpu_khz;
-
-struct mtsp_syscall {
-        int cmd;
-        unsigned char abi;
-        unsigned char size;
-};
-
-struct mtsp_syscall_ret {
-        int retval;
-        int errno;
-};
-
-struct mtsp_syscall_generic {
-        int arg0;
-        int arg1;
-        int arg2;
-        int arg3;
-        int arg4;
-        int arg5;
-        int arg6;
-};
-
-static struct list_head kspd_notifylist;
-static int sp_stopping;
-
-/* these should match with those in the SDE kit */
-#define MTSP_SYSCALL_BASE       0
-#define MTSP_SYSCALL_EXIT       (MTSP_SYSCALL_BASE + 0)
-#define MTSP_SYSCALL_OPEN       (MTSP_SYSCALL_BASE + 1)
-#define MTSP_SYSCALL_READ       (MTSP_SYSCALL_BASE + 2)
-#define MTSP_SYSCALL_WRITE      (MTSP_SYSCALL_BASE + 3)
-#define MTSP_SYSCALL_CLOSE      (MTSP_SYSCALL_BASE + 4)
-#define MTSP_SYSCALL_LSEEK32    (MTSP_SYSCALL_BASE + 5)
-#define MTSP_SYSCALL_ISATTY     (MTSP_SYSCALL_BASE + 6)
-#define MTSP_SYSCALL_GETTIME    (MTSP_SYSCALL_BASE + 7)
-#define MTSP_SYSCALL_PIPEFREQ   (MTSP_SYSCALL_BASE + 8)
-#define MTSP_SYSCALL_GETTOD     (MTSP_SYSCALL_BASE + 9)
-#define MTSP_SYSCALL_IOCTL     (MTSP_SYSCALL_BASE + 10)
-
-#define MTSP_O_RDONLY           0x0000
-#define MTSP_O_WRONLY           0x0001
-#define MTSP_O_RDWR             0x0002
-#define MTSP_O_NONBLOCK         0x0004
-#define MTSP_O_APPEND           0x0008
-#define MTSP_O_SHLOCK           0x0010
-#define MTSP_O_EXLOCK           0x0020
-#define MTSP_O_ASYNC            0x0040
-/* XXX: check which of these is actually O_SYNC vs O_DSYNC */
-#define MTSP_O_FSYNC            O_SYNC
-#define MTSP_O_NOFOLLOW         0x0100
-#define MTSP_O_SYNC             0x0080
-#define MTSP_O_CREAT            0x0200
-#define MTSP_O_TRUNC            0x0400
-#define MTSP_O_EXCL             0x0800
-#define MTSP_O_BINARY           0x8000
-
-extern int tclimit;
-
-struct apsp_table  {
-        int sp;
-        int ap;
-};
-
-/* we might want to do the mode flags too */
-struct apsp_table open_flags_table[] = {
-        { MTSP_O_RDWR, O_RDWR },
-        { MTSP_O_WRONLY, O_WRONLY },
-        { MTSP_O_CREAT, O_CREAT },
-        { MTSP_O_TRUNC, O_TRUNC },
-        { MTSP_O_NONBLOCK, O_NONBLOCK },
-        { MTSP_O_APPEND, O_APPEND },
-        { MTSP_O_NOFOLLOW, O_NOFOLLOW }
-};
-
-struct apsp_table syscall_command_table[] = {
-        { MTSP_SYSCALL_OPEN, __NR_open },
-        { MTSP_SYSCALL_CLOSE, __NR_close },
-        { MTSP_SYSCALL_READ, __NR_read },
-        { MTSP_SYSCALL_WRITE, __NR_write },
-        { MTSP_SYSCALL_LSEEK32, __NR_lseek },
-        { MTSP_SYSCALL_IOCTL, __NR_ioctl }
-};
-
-static int sp_syscall(int num, int arg0, int arg1, int arg2, int arg3)
-{
-        register long int _num  __asm__("$2") = num;
-        register long int _arg0  __asm__("$4") = arg0;
-        register long int _arg1  __asm__("$5") = arg1;
-        register long int _arg2  __asm__("$6") = arg2;
-        register long int _arg3  __asm__("$7") = arg3;
-
-        mm_segment_t old_fs;
-
-        old_fs = get_fs();
-        set_fs(KERNEL_DS);
-
-        __asm__ __volatile__ (
-        "       syscall                                 \n"
-        : "=r" (_num), "=r" (_arg3)
-        : "r" (_num), "r" (_arg0), "r" (_arg1), "r" (_arg2), "r" (_arg3));
-
-        set_fs(old_fs);
-
-        /* $a3 is error flag */
-        if (_arg3)
-                return -_num;
-
-        return _num;
-}
-
-static int translate_syscall_command(int cmd)
-{
-        int i;
-        int ret = -1;
-
-        for (i = 0; i < ARRAY_SIZE(syscall_command_table); i++) {
-                if ((cmd == syscall_command_table[i].sp))
-                        return syscall_command_table[i].ap;
-        }
-
-        return ret;
-}
-
-static unsigned int translate_open_flags(int flags)
-{
-        int i;
-        unsigned int ret = 0;
-
-        for (i = 0; i < ARRAY_SIZE(open_flags_table); i++) {
-                if( (flags & open_flags_table[i].sp) ) {
-                        ret |= open_flags_table[i].ap;
-                }
-        }
-
-        return ret;
-}
-
-
-static int sp_setfsuidgid(uid_t uid, gid_t gid)
-{
-        struct cred *new;
-
-        new = prepare_creds();
-        if (!new)
-                return -ENOMEM;
-
-        new->fsuid = uid;
-        new->fsgid = gid;
-
-        commit_creds(new);
-
-        return 0;
-}
-
-/*
- * Expects a request to be on the sysio channel. Reads it.  Decides whether
- * its a linux syscall and runs it, or whatever.  Puts the return code back
- * into the request and sends the whole thing back.
- */
-void sp_work_handle_request(void)
-{
-        struct mtsp_syscall sc;
-        struct mtsp_syscall_generic generic;
-        struct mtsp_syscall_ret ret;
-        struct kspd_notifications *n;
-        unsigned long written;
-        mm_segment_t old_fs;
-        struct timeval tv;
-        struct timezone tz;
-        int err, cmd;
-
-        char *vcwd;
-        int size;
-
-        ret.retval = -1;
-
-        old_fs = get_fs();
-        set_fs(KERNEL_DS);
-
-        if (!rtlx_read(RTLX_CHANNEL_SYSIO, &sc, sizeof(struct mtsp_syscall))) {
-                set_fs(old_fs);
-                printk(KERN_ERR "Expected request but nothing to read\n");
-                return;
-        }
-
-        size = sc.size;
-
-        if (size) {
-                if (!rtlx_read(RTLX_CHANNEL_SYSIO, &generic, size)) {
-                        set_fs(old_fs);
-                        printk(KERN_ERR "Expected request but nothing to read\n");
-                        return;
-                }
-        }
-
-        /* Run the syscall at the privilege of the user who loaded the
-           SP program */
-
-        if (vpe_getuid(tclimit)) {
-                err = sp_setfsuidgid(vpe_getuid(tclimit), vpe_getgid(tclimit));
-                if (!err)
-                        pr_err("Change of creds failed\n");
-        }
-
-        switch (sc.cmd) {
-        /* needs the flags argument translating from SDE kit to
-           linux */
-        case MTSP_SYSCALL_PIPEFREQ:
-                ret.retval = cpu_khz * 1000;
-                ret.errno = 0;
-                break;
-
-        case MTSP_SYSCALL_GETTOD:
-                memset(&tz, 0, sizeof(tz));
-                if ((ret.retval = sp_syscall(__NR_gettimeofday, (int)&tv,
-                                             (int)&tz, 0, 0)) == 0)
-                        ret.retval = tv.tv_sec;
-                break;
-
-        case MTSP_SYSCALL_EXIT:
-                list_for_each_entry(n, &kspd_notifylist, list)
-                        n->kspd_sp_exit(tclimit);
-                sp_stopping = 1;
-
-                printk(KERN_DEBUG "KSPD got exit syscall from SP exitcode %d\n",
-                       generic.arg0);
-                break;
-
-        case MTSP_SYSCALL_OPEN:
-                generic.arg1 = translate_open_flags(generic.arg1);
-
-                vcwd = vpe_getcwd(tclimit);
-
-                /* change to cwd of the process that loaded the SP program */
-                old_fs = get_fs();
-                set_fs(KERNEL_DS);
-                sys_chdir(vcwd);
-                set_fs(old_fs);
-
-                sc.cmd = __NR_open;
-
-                /* fall through */
-
-        default:
-                if ((sc.cmd >= __NR_Linux) &&
-                    (sc.cmd <= (__NR_Linux +  __NR_Linux_syscalls)) )
-                        cmd = sc.cmd;
-                else
-                        cmd = translate_syscall_command(sc.cmd);
-
-                if (cmd >= 0) {
-                        ret.retval = sp_syscall(cmd, generic.arg0, generic.arg1,
-                                                generic.arg2, generic.arg3);
-                } else
-                        printk(KERN_WARNING
-                               "KSPD: Unknown SP syscall number %d\n", sc.cmd);
-                break;
-        } /* switch */
-
-        if (vpe_getuid(tclimit)) {
-                err = sp_setfsuidgid(0, 0);
-                if (!err)
-                        pr_err("restoring old creds failed\n");
-        }
-
-        old_fs = get_fs();
-        set_fs(KERNEL_DS);
-        written = rtlx_write(RTLX_CHANNEL_SYSIO, &ret, sizeof(ret));
-        set_fs(old_fs);
-        if (written < sizeof(ret))
-                printk("KSPD: sp_work_handle_request failed to send to SP\n");
-}
-
-static void sp_cleanup(void)
-{
-        struct files_struct *files = current->files;
-        int i, j;
-        struct fdtable *fdt;
-
-        j = 0;
-
-        /*
-         * It is safe to dereference the fd table without RCU or
-         * ->file_lock
-         */
-        fdt = files_fdtable(files);
-        for (;;) {
-                unsigned long set;
-                i = j * BITS_PER_LONG;
-                if (i >= fdt->max_fds)
-                        break;
-                set = fdt->open_fds[j++];
-                while (set) {
-                        if (set & 1) {
-                                struct file * file = xchg(&fdt->fd[i], NULL);
-                                if (file)
-                                        filp_close(file, files);
-                        }
-                        i++;
-                        set >>= 1;
-                }
-        }
-
-        /* Put daemon cwd back to root to avoid umount problems */
-        sys_chdir("/");
-}
-
-static int channel_open;
-
-/* the work handler */
-static void sp_work(struct work_struct *unused)
-{
-        if (!channel_open) {
-                if( rtlx_open(RTLX_CHANNEL_SYSIO, 1) != 0) {
-                        printk("KSPD: unable to open sp channel\n");
-                        sp_stopping = 1;
-                } else {
-                        channel_open++;
-                        printk(KERN_DEBUG "KSPD: SP channel opened\n");
-                }
-        } else {
-                /* wait for some data, allow it to sleep */
-                rtlx_read_poll(RTLX_CHANNEL_SYSIO, 1);
-
-                /* Check we haven't been woken because we are stopping */
-                if (!sp_stopping)
-                        sp_work_handle_request();
-        }
-
-        if (!sp_stopping)
-                queue_work(workqueue, &work);
-        else
-                sp_cleanup();
-}
-
-static void startwork(int vpe)
-{
-        sp_stopping = channel_open = 0;
-
-        if (workqueue == NULL) {
-                if ((workqueue = create_singlethread_workqueue("kspd")) == NULL) {
-                        printk(KERN_ERR "unable to start kspd\n");
-                        return;
-                }
-
-                INIT_WORK(&work, sp_work);
-        }
-
-        queue_work(workqueue, &work);
-}
-
-static void stopwork(int vpe)
-{
-        sp_stopping = 1;
-
-        printk(KERN_DEBUG "KSPD: SP stopping\n");
-}
-
-void kspd_notify(struct kspd_notifications *notify)
-{
-        list_add(&notify->list, &kspd_notifylist);
-}
-
-static struct vpe_notifications notify;
-static int kspd_module_init(void)
-{
-        INIT_LIST_HEAD(&kspd_notifylist);
-
-        notify.start = startwork;
-        notify.stop = stopwork;
-        vpe_notify(tclimit, &notify);
-
-        return 0;
-}
-
-static void kspd_module_exit(void)
-{
-
-}
-
-module_init(kspd_module_init);
-module_exit(kspd_module_exit);
-
-MODULE_DESCRIPTION("MIPS KSPD");
-MODULE_AUTHOR("Elizabeth Oldham, MIPS Technologies, Inc.");
-MODULE_LICENSE("GPL");
diff --git a/arch/mips/kernel/vpe.c b/arch/mips/kernel/vpe.c
index f6f91523cb1c..eec690af6581 100644
--- a/arch/mips/kernel/vpe.c
+++ b/arch/mips/kernel/vpe.c
@@ -50,7 +50,6 @@
 #include <asm/mips_mt.h>
 #include <asm/processor.h>
 #include <asm/vpe.h>
-#include <asm/kspd.h>
 
 typedef void *vpe_handle;
 
@@ -69,11 +68,6 @@ static char module_name[] = "vpe";
 static int major;
 static const int minor = 1;     /* fixed for now  */
 
-#ifdef CONFIG_MIPS_APSP_KSPD
-static struct kspd_notifications kspd_events;
-static int kspd_events_reqd;
-#endif
-
 /* grab the likely amount of memory we will need. */
 #ifdef CONFIG_MIPS_VPE_LOADER_TOM
 #define P_SIZE (2 * 1024 * 1024)
@@ -1101,14 +1095,6 @@ static int vpe_open(struct inode *inode, struct file *filp)
         v->uid = filp->f_cred->fsuid;
         v->gid = filp->f_cred->fsgid;
 
-#ifdef CONFIG_MIPS_APSP_KSPD
-        /* get kspd to tell us when a syscall_exit happens */
-        if (!kspd_events_reqd) {
-                kspd_notify(&kspd_events);
-                kspd_events_reqd++;
-        }
-#endif
-
         v->cwd[0] = 0;
         ret = getcwd(v->cwd, VPE_PATH_MAX);
         if (ret < 0)
@@ -1341,13 +1327,6 @@ char *vpe_getcwd(int index)
 
 EXPORT_SYMBOL(vpe_getcwd);
 
-#ifdef CONFIG_MIPS_APSP_KSPD
-static void kspd_sp_exit( int sp_id)
-{
-        cleanup_tc(get_tc(sp_id));
-}
-#endif
-
 static ssize_t store_kill(struct device *dev, struct device_attribute *attr,
                           const char *buf, size_t len)
 {
@@ -1585,9 +1564,6 @@ out_reenable:
         emt(mtflags);
         local_irq_restore(flags);
 
-#ifdef CONFIG_MIPS_APSP_KSPD
-        kspd_events.kspd_sp_exit = kspd_sp_exit;
-#endif
         return 0;
 
 out_class: