Cache information interface and implementation for AMD and Intel on Linux

[palacios.git] / linux_module / iface-console.c

diff --git a/linux_module/iface-console.c b/linux_module/iface-console.c
index c28fd4c..0f5bd23 100644 (file)
--- a/linux_module/iface-console.c
+++ b/linux_module/iface-console.c
@@ -113,11 +113,11 @@ console_read(struct file * filp, char __user * buf, size_t size, loff_t * offset
     }
 
 
-    kfree(msg);
+    palacios_free(msg);
 
-    spin_lock_irqsave(&(cons->queue->lock), flags);
+    palacios_spinlock_lock_irqsave(&(cons->queue->lock), flags);
     entries =  cons->queue->num_entries;
-    spin_unlock_irqrestore(&(cons->queue->lock), flags);
+    palacios_spinlock_unlock_irqrestore(&(cons->queue->lock), flags);
     
     if (entries > 0) {
        wake_up_interruptible(&(cons->intr_queue));
@@ -163,9 +163,9 @@ console_poll(struct file * filp, struct poll_table_struct * poll_tb) {
 
     poll_wait(filp, &(cons->intr_queue), poll_tb);
 
-    spin_lock_irqsave(&(cons->queue->lock), flags);
+    palacios_spinlock_lock_irqsave(&(cons->queue->lock), flags);
     entries = cons->queue->num_entries;
-    spin_unlock_irqrestore(&(cons->queue->lock), flags);
+    palacios_spinlock_unlock_irqrestore(&(cons->queue->lock), flags);
 
     if (entries > 0) {
        //      DEBUG("Returning from POLL\n");
@@ -183,12 +183,12 @@ static int console_release(struct inode * i, struct file * filp) {
 
     DEBUG("Releasing the Console File desc\n");
     
-    spin_lock_irqsave(&(cons->queue->lock), flags);
+    palacios_spinlock_lock_irqsave(&(cons->queue->lock), flags);
     cons->connected = 0;
-    spin_unlock_irqrestore(&(cons->queue->lock), flags);
+    palacios_spinlock_unlock_irqrestore(&(cons->queue->lock), flags);
 
     while ((msg = dequeue(cons->queue))) {
-       kfree(msg);
+       palacios_free(msg);
     }
 
     return 0;
@@ -216,12 +216,12 @@ static int console_connect(struct v3_guest * guest, unsigned int cmd,
        return -1;
     }
 
-    spin_lock_irqsave(&(cons->lock), flags);
+    palacios_spinlock_lock_irqsave(&(cons->lock), flags);
     if (cons->connected == 0) {
        cons->connected = 1;
        acquired = 1;
     }
-    spin_unlock_irqrestore(&(cons->lock), flags);
+    palacios_spinlock_unlock_irqrestore(&(cons->lock), flags);
 
     if (acquired == 0) {
        ERROR("Console already connected\n");
@@ -247,23 +247,30 @@ static int console_connect(struct v3_guest * guest, unsigned int cmd,
 
 static void * palacios_tty_open(void * private_data, unsigned int width, unsigned int height) {
     struct v3_guest * guest = (struct v3_guest *)private_data;
-    struct palacios_console * cons = kmalloc(sizeof(struct palacios_console), GFP_KERNEL);
+    struct palacios_console * cons = palacios_alloc(sizeof(struct palacios_console));
+
+    if (!cons) { 
+       ERROR("Cannot allocate memory for console\n");
+       return NULL;
+    }
 
     INFO("Guest initialized virtual console (Guest=%s)\n", guest->name);
 
     if (guest == NULL) {
        ERROR("ERROR: Cannot open a console on a NULL guest\n");
+       palacios_free(cons);
        return NULL;
     }
 
     if (cons->open == 1) {
        ERROR("Console already open\n");
+       palacios_free(cons);
        return NULL;
     }
 
 
     cons->queue = create_queue(CONSOLE_QUEUE_LEN);
-    spin_lock_init(&(cons->lock));
+    palacios_spinlock_init(&(cons->lock));
     init_waitqueue_head(&(cons->intr_queue));
 
     cons->guest = guest;
@@ -301,7 +308,12 @@ static int palacios_tty_cursor_set(void * console, int x, int y) {
        return 0;
     }
 
-    msg = kmalloc(sizeof(struct cons_msg), GFP_KERNEL);
+    msg = palacios_alloc(sizeof(struct cons_msg));
+
+    if (!msg) { 
+       ERROR("Cannot allocate cursor set message in console\n");
+       return -1;
+    }
 
     msg->op = CONSOLE_CURS_SET;
     msg->cursor.x = x;
@@ -318,7 +330,12 @@ static int palacios_tty_character_set(void * console, int x, int y, char c, unsi
        return 0;
     }
 
-    msg = kmalloc(sizeof(struct cons_msg), GFP_KERNEL);
+    msg = palacios_alloc(sizeof(struct cons_msg));
+
+    if (!msg) { 
+       ERROR("Cannot allocate character set message in console\n");
+       return -1;
+    }
 
     msg->op = CONSOLE_CHAR_SET;
     msg->character.x = x;
@@ -338,7 +355,12 @@ static int palacios_tty_scroll(void * console, int lines) {
        return 0;
     }
 
-    msg = kmalloc(sizeof(struct cons_msg), GFP_KERNEL);
+    msg = palacios_alloc(sizeof(struct cons_msg));
+
+    if (!msg) { 
+       ERROR("Cannot allocate scroll message in console\n");
+       return -1;
+    }
 
     msg->op = CONSOLE_SCROLL;
     msg->scroll.lines = lines;
@@ -354,7 +376,12 @@ static int palacios_set_text_resolution(void * console, int cols, int rows) {
        return 0;
     }
 
-    msg = kmalloc(sizeof(struct cons_msg), GFP_KERNEL);
+    msg = palacios_alloc(sizeof(struct cons_msg));
+
+    if (!msg) { 
+       ERROR("Cannot allocate text resolution message in console\n");
+       return -1;
+    }
     
     msg->op = CONSOLE_RESOLUTION;
     msg->resolution.cols = cols;
@@ -371,7 +398,12 @@ static int palacios_tty_update(void * console) {
        return 0;
     }
 
-    msg = kmalloc(sizeof(struct cons_msg), GFP_KERNEL);
+    msg = palacios_alloc(sizeof(struct cons_msg));
+
+    if (!msg) { 
+       ERROR("Cannot allocate update message in console\n");
+       return -1;
+    }
 
     msg->op = CONSOLE_UPDATE;
 
@@ -382,6 +414,13 @@ static void palacios_tty_close(void * console) {
     struct palacios_console * cons = (struct palacios_console *) console;
 
     cons->open = 0;
+
+    remove_guest_ctrl(cons->guest, V3_VM_CONSOLE_CONNECT);
+    deinit_queue(cons->queue);
+    
+    palacios_spinlock_deinit(&(cons->lock));
+       
+    palacios_free(cons);
 }
 
 
@@ -407,13 +446,18 @@ static int console_init( void ) {
     return 0;
 }
 
+static int console_deinit(void)
+{
+    // nothing to do
+    return 0;
+}
 
 
 
 static struct linux_ext console_ext = {
     .name = "CONSOLE",
     .init = console_init,
-    .deinit = NULL,
+    .deinit = console_deinit,
     .guest_init = NULL,
     .guest_deinit = NULL
 };