[Xen-ia64-devel] [PATCH 48/50] ia64/pv_ops/xen: define xen pv_init_ops.

[Isaku Yamahata <yamahata@xxxxxxxxxxxxx>]

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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