Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>
---
arch/ia64/xen/xen_pv_ops.c | 194 ++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 194 insertions(+), 0 deletions(-)
diff --git a/arch/ia64/xen/xen_pv_ops.c b/arch/ia64/xen/xen_pv_ops.c
index 18aa2f6..a2a7493 100644
--- a/arch/ia64/xen/xen_pv_ops.c
+++ b/arch/ia64/xen/xen_pv_ops.c
@@ -58,6 +58,199 @@ xen_info_init(void)
}
/***************************************************************************
+ * pv_init_ops
+ * initialization hooks.
+ */
+
+static void
+xen_panic_hypercall(struct unw_frame_info *info, void *arg)
+{
+ current->thread.ksp = (__u64)info->sw - 16;
+ HYPERVISOR_shutdown(SHUTDOWN_crash);
+ /* we're never actually going to get here... */
+}
+
+static int
+xen_panic_event(struct notifier_block *this, unsigned long event, void *ptr)
+{
+ unw_init_running(xen_panic_hypercall, NULL);
+ /* we're never actually going to get here... */
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block xen_panic_block = {
+ xen_panic_event, NULL, 0 /* try to go last */
+};
+
+static void xen_pm_power_off(void)
+{
+ local_irq_disable();
+ HYPERVISOR_shutdown(SHUTDOWN_poweroff);
+}
+
+static void __init
+xen_banner(void)
+{
+ printk(KERN_INFO
+ "Running on Xen! pl = %d start_info_pfn=0x%lx nr_pages=%ld "
+ "flags=0x%x\n",
+ xen_info.kernel_rpl,
+ HYPERVISOR_shared_info->arch.start_info_pfn,
+ xen_start_info->nr_pages, xen_start_info->flags);
+}
+
+static int __init
+xen_reserve_memory(struct rsvd_region *region)
+{
+ region->start = (unsigned
long)__va((HYPERVISOR_shared_info->arch.start_info_pfn << PAGE_SHIFT));
+ region->end = region->start + PAGE_SIZE;
+ return 1;
+}
+
+static void __init
+xen_arch_setup_early(void)
+{
+ struct shared_info *s;
+ BUG_ON(!is_running_on_xen());
+
+ s = HYPERVISOR_shared_info;
+ xen_start_info = __va(s->arch.start_info_pfn << PAGE_SHIFT);
+
+ /* Must be done before any hypercall. */
+ xencomm_initialize();
+
+ xen_setup_features();
+ /* Register a call for panic conditions. */
+ atomic_notifier_chain_register(&panic_notifier_list,
+ &xen_panic_block);
+ pm_power_off = xen_pm_power_off;
+
+ xen_ia64_enable_opt_feature();
+}
+
+static void __init
+xen_arch_setup_console(char **cmdline_p)
+{
+ /*
+ * If a console= is NOT specified, we assume using the
+ * xencons console is desired. By default, this is xvc0
+ * for both dom0 and domU.
+ */
+ if (!strstr(*cmdline_p, "console=")) {
+ char *p, *q, name[5] = "xvc";
+ int offset = 0;
+
+#if defined(CONFIG_VGA_CONSOLE)
+ /*
+ * conswitchp might be set intelligently from the
+ * PCDP code. If set to VGA console, use it.
+ */
+ if (is_initial_xendomain() && conswitchp == &vga_con)
+ strncpy(name, "tty", 3);
+#endif
+
+ p = strstr(*cmdline_p, "xencons=");
+
+ if (p) {
+ p += 8;
+ if (!strncmp(p, "ttyS", 4)) {
+ strncpy(name, p, 4);
+ p += 4;
+ offset = simple_strtol(p, &q, 10);
+ if (p == q)
+ offset = 0;
+ } else if (!strncmp(p, "tty", 3) ||
+ !strncmp(p, "xvc", 3)) {
+ strncpy(name, p, 3);
+ p += 3;
+ offset = simple_strtol(p, &q, 10);
+ if (p == q)
+ offset = 0;
+ } else if (!strncmp(p, "off", 3))
+ offset = -1;
+ }
+
+ if (offset >= 0)
+ add_preferred_console(name, offset, NULL);
+ } else if (!is_initial_xendomain()) {
+ /* use hvc_xen */
+ add_preferred_console("hvc", 0, NULL);
+ }
+
+#if !defined(CONFIG_VT) || !defined(CONFIG_DUMMY_CONSOLE)
+ if (!is_initial_xendomain()) {
+ conswitchp = NULL;
+ }
+#endif
+}
+
+static int __init
+xen_arch_setup_nomca(void)
+{
+ if (!is_initial_xendomain())
+ return 1;
+ return 0;
+}
+
+static void __init
+xen_post_platform_setup(void)
+{
+#ifdef CONFIG_XEN_PRIVILEGED_GUEST
+ if (is_running_on_xen() && !ia64_platform_is("xen")) {
+ extern ia64_mv_setup_t xen_setup;
+ xen_setup(cmdline_p);
+ }
+#endif
+}
+
+static void __init
+xen_post_paging_init(void)
+{
+#ifdef notyet /* XXX: notyet dma api paravirtualization*/
+#ifdef CONFIG_XEN
+ xen_contiguous_bitmap_init(max_pfn);
+#endif
+#endif
+}
+
+static void __init
+__xen_cpu_init(void)
+{
+#ifdef CONFIG_XEN_PRIVILEGED_GUEST
+ if (is_running_on_xen() && !ia64_platform_is("xen")) {
+ extern ia64_mv_cpu_init_t xen_cpu_init;
+ xen_cpu_init();
+ }
+#endif
+}
+
+static void __init
+xen_post_smp_prepare_boot_cpu(void)
+{
+ xen_setup_vcpu_info_placement();
+}
+
+static const struct pv_init_ops xen_init_ops __initdata = {
+ .banner = xen_banner,
+
+ .reserve_memory = xen_reserve_memory,
+
+ .arch_setup_early = xen_arch_setup_early,
+ .arch_setup_console = xen_arch_setup_console,
+ .arch_setup_nomca = xen_arch_setup_nomca,
+ .post_platform_setup = xen_post_platform_setup,
+ .post_paging_init = xen_post_paging_init,
+
+ .cpu_init = __xen_cpu_init,
+
+ .post_smp_prepare_boot_cpu = xen_post_smp_prepare_boot_cpu,
+
+ .bundle_patch_module = &xen_alt_bundle_patch_module,
+ .inst_patch_module = &xen_alt_inst_patch_module,
+};
+
+
+/***************************************************************************
* pv_ops initialization
*/
@@ -66,4 +259,5 @@ xen_setup_pv_ops(void)
{
xen_info_init();
pv_info = xen_info;
+ pv_init_ops = xen_init_ops;
}
--
1.5.3
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