* [kvm-ppc-devel] [PATCH 2 of 2] Add PowerPC kvmctl harness and fix
2008-01-09 0:04 [kvm-ppc-devel] [PATCH 0 of 2] Fix kvm-userspace/user/ for PowerPC Hollis Blanchard
2008-01-09 0:04 ` [kvm-ppc-devel] [PATCH 1 of 2] Add OBJCOPY to Hollis Blanchard
@ 2008-01-09 0:04 ` Hollis Blanchard
2008-01-09 8:50 ` [kvm-ppc-devel] [PATCH 2 of 2] Add PowerPC kvmctl harness and Avi Kivity
1 sibling, 1 reply; 4+ messages in thread
From: Hollis Blanchard @ 2008-01-09 0:04 UTC (permalink / raw)
To: Avi Kivity
Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f,
kvm-ppc-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f
# HG changeset patch
# User Hollis Blanchard <hollisb@us.ibm.com>
# Date 1199836753 21600
# Node ID dd6de019e916f0cc2b4f75afb95a9d28323cb174
# Parent 2b1946f501613724c363f98cbdfd95248b947657
Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
---
2 files changed, 447 insertions(+), 9 deletions(-)
user/config-powerpc.mak | 30 ++-
user/main-ppc.c | 426 +++++++++++++++++++++++++++++++++++++++++++++++
diff --git a/user/config-powerpc.mak b/user/config-powerpc.mak
--- a/user/config-powerpc.mak
+++ b/user/config-powerpc.mak
@@ -1,14 +1,26 @@ TEST_DIR=test/powerpc
-TEST_DIR=test/powerpc
CFLAGS += -m32
CFLAGS += -D__powerpc__
CFLAGS += -I $(KERNELDIR)/include
+# for some reaons binutils hates tlbsx unless we say we're 405 :(
+CFLAGS += -Wa,-mregnames,-m405
-tests= $(TEST_DIR)/io.S \
- $(TEST_DIR)/spin.S \
- $(TEST_DIR)/sprg.S \
- $(TEST_DIR)/44x/tlbsx.S \
- $(TEST_DIR)/44x/tlbwe_16KB.S \
- $(TEST_DIR)/44x/tlbwe_hole.S \
- $(TEST_DIR)/44x/tlbwe.S
+%.bin: %.o
+ $(OBJCOPY) -O binary $^ $@
-kvmctl_objs = main.o ../libkvm/libkvm.a
+testobjs := \
+ io.bin \
+ spin.bin \
+ sprg.bin \
+ 44x/tlbsx.bin \
+ 44x/tlbwe_16KB.bin \
+ 44x/tlbwe_hole.bin \
+ 44x/tlbwe.bin
+
+tests := $(addprefix test/powerpc/, $(testobjs))
+
+all: kvmctl $(tests)
+
+kvmctl_objs = main-ppc.o ../libkvm/libkvm.a
+
+arch_clean:
+ rm -f $(tests)
diff --git a/user/main-ppc.c b/user/main-ppc.c
new file mode 100644
--- /dev/null
+++ b/user/main-ppc.c
@@ -0,0 +1,426 @@
+/*
+ * Kernel-based Virtual Machine test driver
+ *
+ * This test driver provides a simple way of testing kvm, without a full
+ * device model.
+ *
+ * Copyright (C) 2006 Qumranet
+ * Copyright IBM Corp. 2008
+ *
+ * Authors:
+ *
+ * Avi Kivity <avi@qumranet.com>
+ * Yaniv Kamay <yaniv@qumranet.com>
+ * Hollis Blanchard <hollisb@us.ibm.com>
+ *
+ * This work is licensed under the GNU LGPL license, version 2.
+ */
+
+#define _GNU_SOURCE
+
+#include <libkvm.h>
+
+#include <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <string.h>
+#include <semaphore.h>
+#include <sys/types.h>
+#include <errno.h>
+#include <pthread.h>
+#include <signal.h>
+#include <pthread.h>
+#include <sys/syscall.h>
+#include <linux/unistd.h>
+#include <getopt.h>
+#include <stdbool.h>
+#include <inttypes.h>
+
+static int gettid(void)
+{
+ return syscall(__NR_gettid);
+}
+
+kvm_context_t kvm;
+
+#define MAX_VCPUS 4
+
+#define IPI_SIGNAL (SIGRTMIN + 4)
+
+#define MAX_IO_TABLE 50
+
+typedef int (io_table_handler_t)(void *, int, int, uint64_t, uint64_t *);
+
+struct io_table_entry
+{
+ uint64_t start;
+ uint64_t end;
+ io_table_handler_t *handler;
+ void *opaque;
+};
+
+struct io_table
+{
+ int nr_entries;
+ struct io_table_entry entries[MAX_IO_TABLE];
+};
+
+static int ncpus = 1;
+static sem_t init_sem;
+static __thread int vcpu;
+static sigset_t kernel_sigmask;
+static sigset_t ipi_sigmask;
+static uint64_t memory_size = 128 * 1024 * 1024;
+
+static struct io_table pio_table;
+
+struct vcpu_info {
+ pid_t tid;
+};
+
+struct vcpu_info *vcpus;
+
+struct io_table_entry *io_table_lookup(struct io_table *io_table, uint64_t addr)
+{
+ int i;
+
+ for (i = 0; i < io_table->nr_entries; i++) {
+ if (io_table->entries[i].start <= addr &&
+ addr < io_table->entries[i].end)
+ return &io_table->entries[i];
+ }
+
+ return NULL;
+}
+
+int io_table_register(struct io_table *io_table, uint64_t start, uint64_t size,
+ io_table_handler_t *handler, void *opaque)
+{
+ struct io_table_entry *entry;
+
+ if (io_table->nr_entries = MAX_IO_TABLE)
+ return -ENOSPC;
+
+ entry = &io_table->entries[io_table->nr_entries];
+ io_table->nr_entries++;
+
+ entry->start = start;
+ entry->end = start + size;
+ entry->handler = handler;
+ entry->opaque = opaque;
+
+ return 0;
+}
+
+static int misc_io(void *opaque, int size, int is_write,
+ uint64_t addr, uint64_t *value)
+{
+ static int newline = 1;
+
+ if (!is_write)
+ *value = -1;
+
+ switch (addr) {
+ case 0xff: // irq injector
+ if (is_write) {
+ printf("injecting interrupt 0x%x\n", (uint8_t)*value);
+ kvm_inject_irq(kvm, 0, *value);
+ }
+ break;
+ case 0xf1: // serial
+ if (is_write) {
+ if (newline)
+ fputs("GUEST: ", stdout);
+ putchar(*value);
+ newline = *value = '\n';
+ }
+ break;
+ case 0xd1:
+ if (!is_write)
+ *value = memory_size;
+ break;
+ case 0xf4: // exit
+ if (is_write)
+ exit(*value);
+ break;
+ }
+
+ return 0;
+}
+
+static int misc_init(void)
+{
+ int err;
+
+ err = io_table_register(&pio_table, 0xff, 1, misc_io, NULL);
+ if (err < 0)
+ return err;
+
+ err = io_table_register(&pio_table, 0xf1, 1, misc_io, NULL);
+ if (err < 0)
+ return err;
+
+ err = io_table_register(&pio_table, 0xf4, 1, misc_io, NULL);
+ if (err < 0)
+ return err;
+
+ return io_table_register(&pio_table, 0xd1, 1, misc_io, NULL);
+}
+
+static int test_debug(void *opaque, int vcpu)
+{
+ printf("test_debug\n");
+ return 0;
+}
+
+static int test_halt(void *opaque, int vcpu)
+{
+ int n;
+
+ sigwait(&ipi_sigmask, &n);
+ return 0;
+}
+
+static int test_io_window(void *opaque)
+{
+ return 0;
+}
+
+static int test_try_push_interrupts(void *opaque)
+{
+ return 0;
+}
+
+static void test_post_kvm_run(void *opaque, int vcpu)
+{
+}
+
+static int test_pre_kvm_run(void *opaque, int vcpu)
+{
+ return 0;
+}
+
+static int test_mem_read(void *opaque, uint64_t addr, uint8_t *data, int len)
+{
+ printf("%s: addr %"PRIx64" len %d\n", __func__, addr, len);
+ memset(data, 0, len);
+ return 0;
+}
+
+static int test_mem_write(void *opaque, uint64_t addr, uint8_t *data, int len)
+{
+ printf("%s: addr %"PRIx64" len %d data %"PRIx64"\n",
+ __func__, addr, len, *(uint64_t *)data);
+ return 0;
+}
+
+static struct kvm_callbacks test_callbacks = {
+ .mmio_read = test_mem_read,
+ .mmio_write = test_mem_write,
+ .debug = test_debug,
+ .halt = test_halt,
+ .io_window = test_io_window,
+ .try_push_interrupts = test_try_push_interrupts,
+ .post_kvm_run = test_post_kvm_run,
+ .pre_kvm_run = test_pre_kvm_run,
+};
+
+static unsigned long load_file(void *mem, const char *fname, int inval_icache)
+{
+ int r;
+ int fd;
+ unsigned long bytes = 0;
+
+ fd = open(fname, O_RDONLY);
+ if (fd = -1) {
+ perror("open");
+ exit(1);
+ }
+
+ while ((r = read(fd, mem, 4096)) != -1 && r != 0) {
+ mem += r;
+ bytes += r;
+ }
+
+ if (r = -1) {
+ perror("read");
+ exit(1);
+ }
+
+ return bytes;
+}
+
+#define ICACHE_LINE_SIZE 32
+
+void sync_caches(void *mem, unsigned long len)
+{
+ unsigned long i;
+
+ for (i = 0; i < len; i += ICACHE_LINE_SIZE)
+ asm volatile ("dcbst %0, %1" : : "g"(mem), "r"(i));
+ asm volatile ("sync");
+ for (i = 0; i < len; i += ICACHE_LINE_SIZE)
+ asm volatile ("icbi %0, %1" : : "g"(mem), "r"(i));
+ asm volatile ("sync; isync");
+}
+
+static void init_vcpu(int n, unsigned long entry)
+{
+ struct kvm_regs regs = {
+ .pc = entry,
+ };
+
+ kvm_set_regs(kvm, 0, ®s);
+
+ sigemptyset(&ipi_sigmask);
+ sigaddset(&ipi_sigmask, IPI_SIGNAL);
+ sigprocmask(SIG_UNBLOCK, &ipi_sigmask, NULL);
+ sigprocmask(SIG_BLOCK, &ipi_sigmask, &kernel_sigmask);
+ vcpus[n].tid = gettid();
+ vcpu = n;
+ kvm_set_signal_mask(kvm, n, &kernel_sigmask);
+ sem_post(&init_sem);
+}
+
+static void *do_create_vcpu(void *_n)
+{
+ int n = (long)_n;
+
+ kvm_create_vcpu(kvm, n);
+ init_vcpu(n, 0x0);
+ kvm_run(kvm, n);
+ return NULL;
+}
+
+static void start_vcpu(int n)
+{
+ pthread_t thread;
+
+ pthread_create(&thread, NULL, do_create_vcpu, (void *)(long)n);
+}
+
+static void usage(const char *progname)
+{
+ fprintf(stderr,
+"Usage: %s [OPTIONS] [bootstrap] flatfile\n"
+"KVM test harness.\n"
+"\n"
+" -s, --smp=NUM create a VM with NUM virtual CPUs\n"
+" -m, --memory=NUM[GMKB] allocate NUM memory for virtual machine. A suffix\n"
+" can be used to change the unit (default: `M')\n"
+" -h, --help display this help screen and exit\n"
+"\n"
+"Report bugs to <kvm-devel@lists.sourceforge.net>.\n"
+ , progname);
+}
+
+static void sig_ignore(int sig)
+{
+ write(1, "boo\n", 4);
+}
+
+int main(int argc, char **argv)
+{
+ void *vm_mem;
+ unsigned long len;
+ int i;
+ const char *sopts = "s:phm:";
+ struct option lopts[] = {
+ { "smp", 1, 0, 's' },
+ { "memory", 1, 0, 'm' },
+ { "help", 0, 0, 'h' },
+ { 0 },
+ };
+ int opt_ind, ch;
+ int nb_args;
+ char *endptr;
+
+ while ((ch = getopt_long(argc, argv, sopts, lopts, &opt_ind)) != -1) {
+ switch (ch) {
+ case 's':
+ ncpus = atoi(optarg);
+ break;
+ case 'm':
+ memory_size = strtoull(optarg, &endptr, 0);
+ switch (*endptr) {
+ case 'G': case 'g':
+ memory_size <<= 30;
+ break;
+ case '\0':
+ case 'M': case 'm':
+ memory_size <<= 20;
+ break;
+ case 'K': case 'k':
+ memory_size <<= 10;
+ break;
+ default:
+ fprintf(stderr,
+ "Unrecongized memory suffix: %c\n",
+ *endptr);
+ exit(1);
+ }
+ if (memory_size = 0) {
+ fprintf(stderr,
+ "Invalid memory size: 0\n");
+ exit(1);
+ }
+ break;
+ case 'h':
+ usage(argv[0]);
+ exit(0);
+ case '?':
+ default:
+ fprintf(stderr,
+ "Try `%s --help' for more information.\n",
+ argv[0]);
+ exit(1);
+ }
+ }
+
+ nb_args = argc - optind;
+ if (nb_args < 1 || nb_args > 2) {
+ fprintf(stderr,
+ "Incorrect number of arguments.\n"
+ "Try `%s --help' for more information.\n",
+ argv[0]);
+ exit(1);
+ }
+
+ signal(IPI_SIGNAL, sig_ignore);
+
+ vcpus = calloc(ncpus, sizeof *vcpus);
+ if (!vcpus) {
+ fprintf(stderr, "calloc failed\n");
+ return 1;
+ }
+
+ kvm = kvm_init(&test_callbacks, 0);
+ if (!kvm) {
+ fprintf(stderr, "kvm_init failed\n");
+ return 1;
+ }
+ if (kvm_create(kvm, memory_size, &vm_mem) < 0) {
+ kvm_finalize(kvm);
+ fprintf(stderr, "kvm_create failed\n");
+ return 1;
+ }
+
+ vm_mem = kvm_create_phys_mem(kvm, 0, memory_size, 0, 1);
+
+ len = load_file(vm_mem, argv[optind], 1);
+ sync_caches(vm_mem, len);
+
+ misc_init();
+
+ sem_init(&init_sem, 0, 0);
+ init_vcpu(0, 0x0);
+ for (i = 1; i < ncpus; ++i)
+ start_vcpu(i);
+ for (i = 0; i < ncpus; ++i)
+ sem_wait(&init_sem);
+
+ kvm_run(kvm, 0);
+
+ return 0;
+}
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