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[Xen-devel] [PATCH 11/23] mini-os: Move test functions into test.c



While useful, these test functions should not be compiled into every
mini-os instance that we compile.

Signed-off-by: Daniel De Graaf <dgdegra@xxxxxxxxxxxxx>
---
 extras/mini-os/Makefile             |    1 +
 extras/mini-os/kernel.c             |  414 -----------------------------------
 extras/mini-os/{kernel.c => test.c} |  139 +-----------
 stubdom/c/minios.cfg                |    1 +
 stubdom/caml/minios.cfg             |    1 +
 5 files changed, 8 insertions(+), 548 deletions(-)
 copy extras/mini-os/{kernel.c => test.c} (80%)

diff --git a/extras/mini-os/Makefile b/extras/mini-os/Makefile
index be38170..96c661a 100644
--- a/extras/mini-os/Makefile
+++ b/extras/mini-os/Makefile
@@ -63,6 +63,7 @@ src-y += mm.c
 src-y += netfront.c
 src-y += pcifront.c
 src-y += sched.c
+src-$(CONFIG_TEST) += test.c
 
 src-y += lib/ctype.c
 src-y += lib/math.c
diff --git a/extras/mini-os/kernel.c b/extras/mini-os/kernel.c
index 2875bf1..c8b9b8c 100644
--- a/extras/mini-os/kernel.c
+++ b/extras/mini-os/kernel.c
@@ -46,8 +46,6 @@
 #include <xen/features.h>
 #include <xen/version.h>
 
-static struct netfront_dev *net_dev;
-
 uint8_t xen_features[XENFEAT_NR_SUBMAPS * 32];
 
 void setup_xen_features(void)
@@ -66,407 +64,10 @@ void setup_xen_features(void)
     }
 }
 
-void test_xenbus(void);
-
-static void xenbus_tester(void *p)
-{
-    printk("Xenbus tests disabled, because of a Xend bug.\n");
-    /* test_xenbus(); */
-}
-
-static void periodic_thread(void *p)
-{
-    struct timeval tv;
-    printk("Periodic thread started.\n");
-    for(;;)
-    {
-        gettimeofday(&tv, NULL);
-        printk("T(s=%ld us=%ld)\n", tv.tv_sec, tv.tv_usec);
-        msleep(1000);
-    }
-}
-
-static void netfront_thread(void *p)
-{
-    net_dev = init_netfront(NULL, NULL, NULL, NULL);
-}
-
-static struct blkfront_dev *blk_dev;
-static struct blkfront_info blk_info;
-static uint64_t blk_size_read;
-static uint64_t blk_size_write;
-
-struct blk_req {
-    struct blkfront_aiocb aiocb;
-    int rand_value;
-    struct blk_req *next;
-};
-
-#ifdef BLKTEST_WRITE
-static struct blk_req *blk_to_read;
-#endif
-
-static struct blk_req *blk_alloc_req(uint64_t sector)
-{
-    struct blk_req *req = xmalloc(struct blk_req);
-    req->aiocb.aio_dev = blk_dev;
-    req->aiocb.aio_buf = _xmalloc(blk_info.sector_size, blk_info.sector_size);
-    req->aiocb.aio_nbytes = blk_info.sector_size;
-    req->aiocb.aio_offset = sector * blk_info.sector_size;
-    req->aiocb.data = req;
-    req->next = NULL;
-    return req;
-}
-
-static void blk_read_completed(struct blkfront_aiocb *aiocb, int ret)
-{
-    struct blk_req *req = aiocb->data;
-    if (ret)
-        printk("got error code %d when reading at offset %ld\n", ret, 
aiocb->aio_offset);
-    else
-        blk_size_read += blk_info.sector_size;
-    free(aiocb->aio_buf);
-    free(req);
-}
-
-static void blk_read_sector(uint64_t sector)
-{
-    struct blk_req *req;
-
-    req = blk_alloc_req(sector);
-    req->aiocb.aio_cb = blk_read_completed;
-
-    blkfront_aio_read(&req->aiocb);
-}
-
-#ifdef BLKTEST_WRITE
-static void blk_write_read_completed(struct blkfront_aiocb *aiocb, int ret)
-{
-    struct blk_req *req = aiocb->data;
-    int rand_value;
-    int i;
-    int *buf;
-
-    if (ret) {
-        printk("got error code %d when reading back at offset %ld\n", ret, 
aiocb->aio_offset);
-        free(aiocb->aio_buf);
-        free(req);
-        return;
-    }
-    blk_size_read += blk_info.sector_size;
-    buf = (int*) aiocb->aio_buf;
-    rand_value = req->rand_value;
-    for (i = 0; i < blk_info.sector_size / sizeof(int); i++) {
-        if (buf[i] != rand_value) {
-            printk("bogus data at offset %ld\n", aiocb->aio_offset + i);
-            break;
-        }
-        rand_value *= RAND_MIX;
-    }
-    free(aiocb->aio_buf);
-    free(req);
-}
-
-static void blk_write_completed(struct blkfront_aiocb *aiocb, int ret)
-{
-    struct blk_req *req = aiocb->data;
-    if (ret) {
-        printk("got error code %d when writing at offset %ld\n", ret, 
aiocb->aio_offset);
-        free(aiocb->aio_buf);
-        free(req);
-        return;
-    }
-    blk_size_write += blk_info.sector_size;
-    /* Push write check */
-    req->next = blk_to_read;
-    blk_to_read = req;
-}
-
-static void blk_write_sector(uint64_t sector)
-{
-    struct blk_req *req;
-    int rand_value;
-    int i;
-    int *buf;
-
-    req = blk_alloc_req(sector);
-    req->aiocb.aio_cb = blk_write_completed;
-    req->rand_value = rand_value = rand();
-
-    buf = (int*) req->aiocb.aio_buf;
-    for (i = 0; i < blk_info.sector_size / sizeof(int); i++) {
-        buf[i] = rand_value;
-        rand_value *= RAND_MIX;
-    }
-
-    blkfront_aio_write(&req->aiocb);
-}
-#endif
-
-static void blkfront_thread(void *p)
-{
-    time_t lasttime = 0;
-
-    blk_dev = init_blkfront(NULL, &blk_info);
-    if (!blk_dev)
-        return;
-
-    if (blk_info.info & VDISK_CDROM)
-        printk("Block device is a CDROM\n");
-    if (blk_info.info & VDISK_REMOVABLE)
-        printk("Block device is removable\n");
-    if (blk_info.info & VDISK_READONLY)
-        printk("Block device is read-only\n");
-
-#ifdef BLKTEST_WRITE
-    if (blk_info.mode == O_RDWR) {
-        blk_write_sector(0);
-        blk_write_sector(blk_info.sectors-1);
-    } else
-#endif
-    {
-        blk_read_sector(0);
-        blk_read_sector(blk_info.sectors-1);
-    }
-
-    while (1) {
-        uint64_t sector = rand() % blk_info.sectors;
-        struct timeval tv;
-#ifdef BLKTEST_WRITE
-        if (blk_info.mode == O_RDWR)
-            blk_write_sector(sector);
-        else
-#endif
-            blk_read_sector(sector);
-        blkfront_aio_poll(blk_dev);
-        gettimeofday(&tv, NULL);
-        if (tv.tv_sec > lasttime + 10) {
-            printk("%llu read, %llu write\n", blk_size_read, blk_size_write);
-            lasttime = tv.tv_sec;
-        }
-
-#ifdef BLKTEST_WRITE
-        while (blk_to_read) {
-            struct blk_req *req = blk_to_read;
-            blk_to_read = blk_to_read->next;
-            req->aiocb.aio_cb = blk_write_read_completed;
-            blkfront_aio_read(&req->aiocb);
-        }
-#endif
-    }
-}
-
-#define WIDTH 800
-#define HEIGHT 600
-#define DEPTH 32
-
-static uint32_t *fb;
-static int refresh_period = 50;
-static struct fbfront_dev *fb_dev;
-static struct semaphore fbfront_sem = __SEMAPHORE_INITIALIZER(fbfront_sem, 0);
-
-static void fbfront_drawvert(int x, int y1, int y2, uint32_t color)
-{
-    int y;
-    if (x < 0)
-        return;
-    if (x >= WIDTH)
-        return;
-    if (y1 < 0)
-        y1 = 0;
-    if (y2 >= HEIGHT)
-        y2 = HEIGHT-1;
-    for (y = y1; y <= y2; y++)
-        fb[x + y*WIDTH] ^= color;
-}
-
-static void fbfront_drawhoriz(int x1, int x2, int y, uint32_t color)
-{
-    int x;
-    if (y < 0)
-        return;
-    if (y >= HEIGHT)
-        return;
-    if (x1 < 0)
-        x1 = 0;
-    if (x2 >= WIDTH)
-        x2 = WIDTH-1;
-    for (x = x1; x <= x2; x++)
-        fb[x + y*WIDTH] ^= color;
-}
-
-static void fbfront_thread(void *p)
-{
-    size_t line_length = WIDTH * (DEPTH / 8);
-    size_t memsize = HEIGHT * line_length;
-    unsigned long *mfns;
-    int i, n = (memsize + PAGE_SIZE-1) / PAGE_SIZE;
-
-    memsize = n * PAGE_SIZE;
-    fb = _xmalloc(memsize, PAGE_SIZE);
-    memset(fb, 0, memsize);
-    mfns = xmalloc_array(unsigned long, n);
-    for (i = 0; i < n; i++)
-        mfns[i] = virtual_to_mfn((char *) fb + i * PAGE_SIZE);
-    fb_dev = init_fbfront(NULL, mfns, WIDTH, HEIGHT, DEPTH, line_length, n);
-    xfree(mfns);
-    if (!fb_dev) {
-        xfree(fb);
-        return;
-    }
-    up(&fbfront_sem);
-}
-
-static void clip_cursor(int *x, int *y)
-{
-    if (*x < 0)
-        *x = 0;
-    if (*x >= WIDTH)
-        *x = WIDTH - 1;
-    if (*y < 0)
-        *y = 0;
-    if (*y >= HEIGHT)
-        *y = HEIGHT - 1;
-}
-
-static void refresh_cursor(int new_x, int new_y)
-{
-    static int old_x = -1, old_y = -1;
-
-    if (!refresh_period)
-        return;
-
-    if (old_x != -1 && old_y != -1) {
-        fbfront_drawvert(old_x, old_y + 1, old_y + 8, 0xffffffff);
-        fbfront_drawhoriz(old_x + 1, old_x + 8, old_y, 0xffffffff);
-        fbfront_update(fb_dev, old_x, old_y, 9, 9);
-    }
-    old_x = new_x;
-    old_y = new_y;
-    fbfront_drawvert(new_x, new_y + 1, new_y + 8, 0xffffffff);
-    fbfront_drawhoriz(new_x + 1, new_x + 8, new_y, 0xffffffff);
-    fbfront_update(fb_dev, new_x, new_y, 9, 9);
-}
-
-static struct kbdfront_dev *kbd_dev;
-static void kbdfront_thread(void *p)
-{
-    DEFINE_WAIT(w);
-    DEFINE_WAIT(w2);
-    int x = WIDTH / 2, y = HEIGHT / 2, z = 0;
-
-    kbd_dev = init_kbdfront(NULL, 1);
-    if (!kbd_dev)
-        return;
-
-    down(&fbfront_sem);
-    refresh_cursor(x, y);
-    while (1) {
-        union xenkbd_in_event kbdevent;
-        union xenfb_in_event fbevent;
-        int sleep = 1;
-
-        add_waiter(w, kbdfront_queue);
-        add_waiter(w2, fbfront_queue);
-
-        while (kbdfront_receive(kbd_dev, &kbdevent, 1) != 0) {
-            sleep = 0;
-            switch(kbdevent.type) {
-            case XENKBD_TYPE_MOTION:
-                printk("motion x:%d y:%d z:%d\n",
-                        kbdevent.motion.rel_x,
-                        kbdevent.motion.rel_y,
-                        kbdevent.motion.rel_z);
-                x += kbdevent.motion.rel_x;
-                y += kbdevent.motion.rel_y;
-                z += kbdevent.motion.rel_z;
-                clip_cursor(&x, &y);
-                refresh_cursor(x, y);
-                break;
-            case XENKBD_TYPE_POS:
-                printk("pos x:%d y:%d dz:%d\n",
-                        kbdevent.pos.abs_x,
-                        kbdevent.pos.abs_y,
-                        kbdevent.pos.rel_z);
-                x = kbdevent.pos.abs_x;
-                y = kbdevent.pos.abs_y;
-                z = kbdevent.pos.rel_z;
-                clip_cursor(&x, &y);
-                refresh_cursor(x, y);
-                break;
-            case XENKBD_TYPE_KEY:
-                printk("key %d %s\n",
-                        kbdevent.key.keycode,
-                        kbdevent.key.pressed ? "pressed" : "released");
-                if (kbdevent.key.keycode == BTN_LEFT) {
-                    printk("mouse %s at (%d,%d,%d)\n",
-                            kbdevent.key.pressed ? "clic" : "release", x, y, 
z);
-                    if (kbdevent.key.pressed) {
-                        uint32_t color = rand();
-                        fbfront_drawvert(x - 16, y - 16, y + 15, color);
-                        fbfront_drawhoriz(x - 16, x + 15, y + 16, color);
-                        fbfront_drawvert(x + 16, y - 15, y + 16, color);
-                        fbfront_drawhoriz(x - 15, x + 16, y - 16, color);
-                        fbfront_update(fb_dev, x - 16, y - 16, 33, 33);
-                    }
-                } else if (kbdevent.key.keycode == KEY_Q) {
-                    struct sched_shutdown sched_shutdown = { .reason = 
SHUTDOWN_poweroff };
-                    HYPERVISOR_sched_op(SCHEDOP_shutdown, &sched_shutdown);
-                    do_exit();
-                }
-                break;
-            }
-        }
-        while (fbfront_receive(fb_dev, &fbevent, 1) != 0) {
-            sleep = 0;
-            switch(fbevent.type) {
-            case XENFB_TYPE_REFRESH_PERIOD:
-                refresh_period = fbevent.refresh_period.period;
-                printk("refresh period %d\n", refresh_period);
-                refresh_cursor(x, y);
-                break;
-            }
-        }
-        if (sleep)
-            schedule();
-    }
-}
-
-static struct pcifront_dev *pci_dev;
-
-static void print_pcidev(unsigned int domain, unsigned int bus, unsigned int 
slot, unsigned int fun)
-{
-    unsigned int vendor, device, rev, class;
-
-    pcifront_conf_read(pci_dev, domain, bus, slot, fun, 0x00, 2, &vendor);
-    pcifront_conf_read(pci_dev, domain, bus, slot, fun, 0x02, 2, &device);
-    pcifront_conf_read(pci_dev, domain, bus, slot, fun, 0x08, 1, &rev);
-    pcifront_conf_read(pci_dev, domain, bus, slot, fun, 0x0a, 2, &class);
-
-    printk("%04x:%02x:%02x.%02x %04x: %04x:%04x (rev %02x)\n", domain, bus, 
slot, fun, class, vendor, device, rev);
-}
-
-static void pcifront_thread(void *p)
-{
-    pcifront_watches(NULL);
-    pci_dev = init_pcifront(NULL);
-    if (!pci_dev)
-        return;
-    printk("PCI devices:\n");
-    pcifront_scan(pci_dev, print_pcidev);
-}
-
 /* This should be overridden by the application we are linked against. */
 __attribute__((weak)) int app_main(start_info_t *si)
 {
     printk("Dummy main: start_info=%p\n", si);
-    create_thread("xenbus_tester", xenbus_tester, si);
-    create_thread("periodic_thread", periodic_thread, si);
-    create_thread("netfront", netfront_thread, si);
-    create_thread("blkfront", blkfront_thread, si);
-    create_thread("fbfront", fbfront_thread, si);
-    create_thread("kbdfront", kbdfront_thread, si);
-    create_thread("pcifront", pcifront_thread, si);
     return 0;
 }
 
@@ -534,21 +135,6 @@ void start_kernel(start_info_t *si)
 
 void stop_kernel(void)
 {
-    if (net_dev)
-        shutdown_netfront(net_dev);
-
-    if (blk_dev)
-        shutdown_blkfront(blk_dev);
-
-    if (fb_dev)
-        shutdown_fbfront(fb_dev);
-
-    if (kbd_dev)
-        shutdown_kbdfront(kbd_dev);
-
-    if (pci_dev)
-        shutdown_pcifront(pci_dev);
-
     /* TODO: fs import */
 
     local_irq_disable();
diff --git a/extras/mini-os/kernel.c b/extras/mini-os/test.c
similarity index 80%
copy from extras/mini-os/kernel.c
copy to extras/mini-os/test.c
index 2875bf1..9039cb3 100644
--- a/extras/mini-os/kernel.c
+++ b/extras/mini-os/test.c
@@ -1,8 +1,7 @@
 /******************************************************************************
- * kernel.c
+ * test.c
  * 
- * Assorted crap goes here, including the initial C entry point, jumped at
- * from head.S.
+ * Test code for all the various frontends; split from kernel.c
  * 
  * Copyright (c) 2002-2003, K A Fraser & R Neugebauer
  * Copyright (c) 2005, Grzegorz Milos, Intel Research Cambridge
@@ -48,24 +47,6 @@
 
 static struct netfront_dev *net_dev;
 
-uint8_t xen_features[XENFEAT_NR_SUBMAPS * 32];
-
-void setup_xen_features(void)
-{
-    xen_feature_info_t fi;
-    int i, j;
-
-    for (i = 0; i < XENFEAT_NR_SUBMAPS; i++) 
-    {
-        fi.submap_idx = i;
-        if (HYPERVISOR_xen_version(XENVER_get_features, &fi) < 0)
-            break;
-        
-        for (j=0; j<32; j++)
-            xen_features[i*32+j] = !!(fi.submap & 1<<j);
-    }
-}
-
 void test_xenbus(void);
 
 static void xenbus_tester(void *p)
@@ -456,10 +437,9 @@ static void pcifront_thread(void *p)
     pcifront_scan(pci_dev, print_pcidev);
 }
 
-/* This should be overridden by the application we are linked against. */
-__attribute__((weak)) int app_main(start_info_t *si)
+int app_main(start_info_t *si)
 {
-    printk("Dummy main: start_info=%p\n", si);
+    printk("Test main: start_info=%p\n", si);
     create_thread("xenbus_tester", xenbus_tester, si);
     create_thread("periodic_thread", periodic_thread, si);
     create_thread("netfront", netfront_thread, si);
@@ -470,69 +450,7 @@ __attribute__((weak)) int app_main(start_info_t *si)
     return 0;
 }
 
-/*
- * INITIAL C ENTRY POINT.
- */
-void start_kernel(start_info_t *si)
-{
-    static char hello[] = "Bootstrapping...\n";
-
-    (void)HYPERVISOR_console_io(CONSOLEIO_write, strlen(hello), hello);
-
-    arch_init(si);
-
-    trap_init();
-
-    /* print out some useful information  */
-    printk("Xen Minimal OS!\n");
-    printk("  start_info: %p(VA)\n", si);
-    printk("    nr_pages: 0x%lx\n", si->nr_pages);
-    printk("  shared_inf: 0x%08lx(MA)\n", si->shared_info);
-    printk("     pt_base: %p(VA)\n", (void *)si->pt_base); 
-    printk("nr_pt_frames: 0x%lx\n", si->nr_pt_frames);
-    printk("    mfn_list: %p(VA)\n", (void *)si->mfn_list); 
-    printk("   mod_start: 0x%lx(VA)\n", si->mod_start);
-    printk("     mod_len: %lu\n", si->mod_len); 
-    printk("       flags: 0x%x\n", (unsigned int)si->flags);
-    printk("    cmd_line: %s\n",  
-           si->cmd_line ? (const char *)si->cmd_line : "NULL");
-
-    /* Set up events. */
-    init_events();
-    
-    /* ENABLE EVENT DELIVERY. This is disabled at start of day. */
-    __sti();
-
-    arch_print_info();
-
-    setup_xen_features();
-
-    /* Init memory management. */
-    init_mm();
-
-    /* Init time and timers. */
-    init_time();
-
-    /* Init the console driver. */
-    init_console();
-
-    /* Init grant tables */
-    init_gnttab();
-    
-    /* Init scheduler. */
-    init_sched();
- 
-    /* Init XenBus */
-    init_xenbus();
-
-    /* Call (possibly overridden) app_main() */
-    app_main(&start_info);
-
-    /* Everything initialised, start idle thread */
-    run_idle_thread();
-}
-
-void stop_kernel(void)
+void shutdown_frontends(void)
 {
     if (net_dev)
         shutdown_netfront(net_dev);
@@ -548,51 +466,4 @@ void stop_kernel(void)
 
     if (pci_dev)
         shutdown_pcifront(pci_dev);
-
-    /* TODO: fs import */
-
-    local_irq_disable();
-
-    /* Reset grant tables */
-    fini_gnttab();
-
-    /* Reset the console driver. */
-    fini_console(NULL);
-    /* TODO: record new ring mfn & event in start_info */
-
-    /* Reset XenBus */
-    fini_xenbus();
-
-    /* Reset timers */
-    fini_time();
-
-    /* Reset memory management. */
-    fini_mm();
-
-    /* Reset events. */
-    fini_events();
-
-    /* Reset traps */
-    trap_fini();
-
-    /* Reset arch details */
-    arch_fini();
-}
-
-/*
- * do_exit: This is called whenever an IRET fails in entry.S.
- * This will generally be because an application has got itself into
- * a really bad state (probably a bad CS or SS). It must be killed.
- * Of course, minimal OS doesn't have applications :-)
- */
-
-void do_exit(void)
-{
-    printk("Do_exit called!\n");
-    stack_walk();
-    for( ;; )
-    {
-        struct sched_shutdown sched_shutdown = { .reason = SHUTDOWN_crash };
-        HYPERVISOR_sched_op(SCHEDOP_shutdown, &sched_shutdown);
-    }
 }
diff --git a/stubdom/c/minios.cfg b/stubdom/c/minios.cfg
index e69de29..e1faee5 100644
--- a/stubdom/c/minios.cfg
+++ b/stubdom/c/minios.cfg
@@ -0,0 +1 @@
+CONFIG_TEST=y
diff --git a/stubdom/caml/minios.cfg b/stubdom/caml/minios.cfg
index e69de29..e1faee5 100644
--- a/stubdom/caml/minios.cfg
+++ b/stubdom/caml/minios.cfg
@@ -0,0 +1 @@
+CONFIG_TEST=y
-- 
1.7.7.5


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