integrated new configuration system

[palacios.git] / palacios / src / devices / apic.c

diff --git a/palacios/src/devices/apic.c b/palacios/src/devices/apic.c
index 5c5f7a4..ccb89e3 100644 (file)
--- a/palacios/src/devices/apic.c
+++ b/palacios/src/devices/apic.c
@@ -22,7 +22,7 @@
 #include <devices/apic_regs.h>
 #include <palacios/vmm.h>
 #include <palacios/vmm_msr.h>
-
+#include <palacios/vm_guest.h>
 
 #ifndef CONFIG_DEBUG_APIC
 #undef PrintDebug
@@ -183,6 +183,8 @@ struct apic_state {
 
 };
 
+static int apic_read(addr_t guest_addr, void * dst, uint_t length, void * priv_data);
+static int apic_write(addr_t guest_addr, void * src, uint_t length, void * priv_data);
 
 static void init_apic_state(struct apic_state * apic) {
     apic->base_addr = DEFAULT_BASE_ADDR;
@@ -242,12 +244,26 @@ static int read_apic_msr(uint_t msr, v3_msr_t * dst, void * priv_data) {
 
 
 static int write_apic_msr(uint_t msr, v3_msr_t src, void * priv_data) {
-    //  struct vm_device * dev = (struct vm_device *)priv_data;
-    //  struct apic_state * apic = (struct apic_state *)dev->private_data;
+    struct vm_device * dev = (struct vm_device *)priv_data;
+    struct apic_state * apic = (struct apic_state *)dev->private_data;
+    struct v3_shadow_region * old_reg = v3_get_shadow_region(dev->vm, apic->base_addr);
 
-    PrintError("WRITING APIC BASE ADDR: HI=%x LO=%x\n", src.hi, src.lo);
+    if (old_reg == NULL) {
+       // uh oh...
+       PrintError("APIC Base address region does not exit...\n");
+       return -1;
+    }
+    
+    v3_delete_shadow_region(dev->vm, old_reg);
 
-    return -1;
+    apic->base_addr = src.value;
+
+    if (v3_hook_full_mem(dev->vm, apic->base_addr, apic->base_addr + PAGE_SIZE_4KB, apic_read, apic_write, dev) == -1) {
+       PrintError("Could not hook new APIC Base address\n");
+       return -1;
+    }
+
+    return 0;
 }
 
 
@@ -266,6 +282,10 @@ static int activate_apic_irq(struct apic_state * apic, uint32_t irq_num) {
 
     PrintDebug("Raising APIC IRQ %d\n", irq_num);
 
+    if (*req_location & flag) {
+       V3_Print("Interrupts coallescing\n");
+    }
+
     if (*en_location & flag) {
        *req_location |= flag;
     } else {
@@ -1000,7 +1020,7 @@ static void apic_update_time(ullong_t cpu_cycles, ullong_t cpu_freq, void * priv
                   apic->tmr_vec_tbl.tmr_mode, apic->tmr_init_cnt, shift_num);
 
        if (apic_intr_pending(dev->vm, priv_data)) {
-           PrintDebug("Overriding pending IRQ %d\n", apic_get_intr_number(priv_data));
+           PrintDebug("Overriding pending IRQ %d\n", apic_get_intr_number(dev->vm, priv_data));
        }
 
        if (activate_internal_irq(apic, APIC_TMR_INT) == -1) {
@@ -1052,15 +1072,16 @@ static struct v3_device_ops dev_ops = {
 
 
 
-static int apic_init(struct guest_info * vm, void * cfg_data) {
+static int apic_init(struct guest_info * vm, v3_cfg_tree_t * cfg) {
     PrintDebug("Creating APIC\n");
+    char * name = v3_cfg_val(cfg, "name");
 
     struct apic_state * apic = (struct apic_state *)V3_Malloc(sizeof(struct apic_state));
 
-    struct vm_device * dev = v3_allocate_device("LAPIC", &dev_ops, apic);
+    struct vm_device * dev = v3_allocate_device(name, &dev_ops, apic);
 
     if (v3_attach_device(vm, dev) == -1) {
-       PrintError("Could not attach device %s\n", "LAPIC");
+       PrintError("Could not attach device %s\n", name);
        return -1;
     }