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commit 1f8bafb4aa20ed050b431fb5daec0912b51e1c23
Author: Juergen Gross <jgross@xxxxxxxx>
AuthorDate: Mon Jun 20 09:38:18 2022 +0200
Commit: Julien Grall <jgrall@xxxxxxxxxx>
CommitDate: Mon Jul 4 09:50:51 2022 +0100
mini-os: eliminate console directory
Merge the two remaining source files in the console directory into
a single one and move it to the main directory.
Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
Reviewed-by: Samuel Thibault <samuel.thibault@xxxxxxxxxxxx>
---
Makefile | 4 +-
console.c | 405 +++++++++++++++++++++++++++++++++++++++++++++++++
console/console.c | 177 ---------------------
console/xencons_ring.c | 238 -----------------------------
4 files changed, 406 insertions(+), 418 deletions(-)
diff --git a/Makefile b/Makefile
index 509d927..f3acdd2 100644
--- a/Makefile
+++ b/Makefile
@@ -41,6 +41,7 @@ src-$(CONFIG_CONSFRONT) += consfront.c
src-$(CONFIG_TPMFRONT) += tpmfront.c
src-$(CONFIG_TPM_TIS) += tpm_tis.c
src-$(CONFIG_TPMBACK) += tpmback.c
+src-y += console.c
src-y += daytime.c
src-y += e820.c
src-y += events.c
@@ -69,9 +70,6 @@ src-y += lib/sys.c
src-y += lib/xmalloc.c
src-$(CONFIG_LIBXS) += lib/xs.c
-src-y += console/console.c
-src-y += console/xencons_ring.c
-
# The common mini-os objects to build.
APP_OBJS :=
OBJS := $(patsubst %.c,$(OBJ_DIR)/%.o,$(src-y))
diff --git a/console.c b/console.c
new file mode 100644
index 0000000..29277ea
--- /dev/null
+++ b/console.c
@@ -0,0 +1,405 @@
+/*
+ ****************************************************************************
+ * (C) 2006 - Grzegorz Milos - Cambridge University
+ ****************************************************************************
+ *
+ * File: console.c
+ * Author: Grzegorz Milos
+ * Changes:
+ *
+ * Date: Mar 2006
+ *
+ * Environment: Xen Minimal OS
+ * Description: Console interface.
+ *
+ * Handles console I/O. Defines printk.
+ *
+ ****************************************************************************
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <mini-os/types.h>
+#include <mini-os/wait.h>
+#include <mini-os/mm.h>
+#include <mini-os/hypervisor.h>
+#include <mini-os/events.h>
+#include <mini-os/os.h>
+#include <mini-os/lib.h>
+#include <mini-os/console.h>
+#include <mini-os/xenbus.h>
+#include <mini-os/xmalloc.h>
+#include <mini-os/gnttab.h>
+#include <xen/io/console.h>
+#include <xen/io/protocols.h>
+#include <xen/io/ring.h>
+#include <xen/hvm/params.h>
+
+/* If console not initialised the printk will be sent to xen serial line
+ NOTE: you need to enable verbose in xen/Rules.mk for it to work. */
+static struct consfront_dev* xen_console = NULL;
+static int console_initialised = 0;
+
+__attribute__((weak)) void console_input(char * buf, unsigned len)
+{
+ if(len > 0)
+ {
+ /* Just repeat what's written */
+ buf[len] = '\0';
+ printk("%s", buf);
+
+ if(buf[len-1] == '\r')
+ printk("\nNo console input handler.\n");
+ }
+}
+
+#ifndef HAVE_LIBC
+void xencons_rx(char *buf, unsigned len, struct pt_regs *regs)
+{
+ console_input(buf, len);
+}
+
+void xencons_tx(void)
+{
+ /* Do nothing, handled by _rx */
+}
+#endif
+
+
+void console_print(struct consfront_dev *dev, const char *data, int length)
+{
+ char *curr_char, saved_char;
+ char copied_str[length+1];
+ char *copied_ptr;
+ int part_len;
+ int (*ring_send_fn)(struct consfront_dev *dev, const char *data, unsigned
length);
+
+ if(!console_initialised)
+ ring_send_fn = xencons_ring_send_no_notify;
+ else
+ ring_send_fn = xencons_ring_send;
+
+ if (dev && dev->is_raw) {
+ ring_send_fn(dev, data, length);
+ return;
+ }
+
+ copied_ptr = copied_str;
+ memcpy(copied_ptr, data, length);
+ for(curr_char = copied_ptr; curr_char < copied_ptr+length-1; curr_char++)
+ {
+ if(*curr_char == '\n')
+ {
+ *curr_char = '\r';
+ saved_char = *(curr_char+1);
+ *(curr_char+1) = '\n';
+ part_len = curr_char - copied_ptr + 2;
+ ring_send_fn(dev, copied_ptr, part_len);
+ *(curr_char+1) = saved_char;
+ copied_ptr = curr_char+1;
+ length -= part_len - 1;
+ }
+ }
+
+ if (copied_ptr[length-1] == '\n') {
+ copied_ptr[length-1] = '\r';
+ copied_ptr[length] = '\n';
+ length++;
+ }
+
+ ring_send_fn(dev, copied_ptr, length);
+}
+
+void print(int direct, const char *fmt, va_list args)
+{
+ static char __print_buf[1024];
+
+ (void)vsnprintf(__print_buf, sizeof(__print_buf), fmt, args);
+
+ if(direct)
+ {
+ (void)HYPERVISOR_console_io(CONSOLEIO_write, strlen(__print_buf),
__print_buf);
+ return;
+ } else {
+#ifndef CONFIG_USE_XEN_CONSOLE
+ if(!console_initialised)
+#endif
+ (void)HYPERVISOR_console_io(CONSOLEIO_write, strlen(__print_buf),
__print_buf);
+
+ console_print(NULL, __print_buf, strlen(__print_buf));
+ }
+}
+
+void printk(const char *fmt, ...)
+{
+ va_list args;
+ va_start(args, fmt);
+ print(0, fmt, args);
+ va_end(args);
+}
+
+void xprintk(const char *fmt, ...)
+{
+ va_list args;
+ va_start(args, fmt);
+ print(1, fmt, args);
+ va_end(args);
+}
+void init_console(void)
+{
+ printk("Initialising console ... ");
+ xen_console = xencons_ring_init();
+ console_initialised = 1;
+ /* This is also required to notify the daemon */
+ printk("done.\n");
+}
+
+void suspend_console(void)
+{
+ console_initialised = 0;
+ xencons_ring_fini(xen_console);
+}
+
+void resume_console(void)
+{
+ xencons_ring_resume(xen_console);
+ console_initialised = 1;
+}
+
+DECLARE_WAIT_QUEUE_HEAD(console_queue);
+
+static struct xencons_interface *console_ring;
+uint32_t console_evtchn;
+
+static struct consfront_dev* resume_xen_console(struct consfront_dev* dev);
+
+#ifdef CONFIG_PARAVIRT
+void get_console(void *p)
+{
+ start_info_t *si = p;
+
+ console_ring = mfn_to_virt(si->console.domU.mfn);
+ console_evtchn = si->console.domU.evtchn;
+}
+#else
+void get_console(void *p)
+{
+ uint64_t v = -1;
+
+ if (hvm_get_parameter(HVM_PARAM_CONSOLE_EVTCHN, &v))
+ BUG();
+ console_evtchn = v;
+
+ if (hvm_get_parameter(HVM_PARAM_CONSOLE_PFN, &v))
+ BUG();
+ console_ring = (struct xencons_interface *)map_frame_virt(v);
+}
+#endif
+
+static inline void notify_daemon(struct consfront_dev *dev)
+{
+ /* Use evtchn: this is called early, before irq is set up. */
+ if (!dev)
+ notify_remote_via_evtchn(console_evtchn);
+ else
+ notify_remote_via_evtchn(dev->evtchn);
+}
+
+static inline struct xencons_interface *xencons_interface(void)
+{
+ return console_evtchn ? console_ring : NULL;
+}
+
+int xencons_ring_send_no_notify(struct consfront_dev *dev, const char *data,
unsigned len)
+{
+ int sent = 0;
+ struct xencons_interface *intf;
+ XENCONS_RING_IDX cons, prod;
+
+ if (!dev)
+ intf = xencons_interface();
+ else
+ intf = dev->ring;
+ if (!intf)
+ return sent;
+
+ cons = intf->out_cons;
+ prod = intf->out_prod;
+ mb();
+ BUG_ON((prod - cons) > sizeof(intf->out));
+
+ while ((sent < len) && ((prod - cons) < sizeof(intf->out)))
+ intf->out[MASK_XENCONS_IDX(prod++, intf->out)] = data[sent++];
+
+ wmb();
+ intf->out_prod = prod;
+
+ return sent;
+}
+
+int xencons_ring_send(struct consfront_dev *dev, const char *data, unsigned
len)
+{
+ int sent;
+
+ sent = xencons_ring_send_no_notify(dev, data, len);
+ notify_daemon(dev);
+
+ return sent;
+}
+
+void console_handle_input(evtchn_port_t port, struct pt_regs *regs, void *data)
+{
+ struct consfront_dev *dev = (struct consfront_dev *) data;
+#ifdef HAVE_LIBC
+ struct file *file = dev ? get_file_from_fd(dev->fd) : NULL;
+
+ if ( file )
+ file->read = true;
+
+ wake_up(&console_queue);
+#else
+ struct xencons_interface *intf = xencons_interface();
+ XENCONS_RING_IDX cons, prod;
+
+ cons = intf->in_cons;
+ prod = intf->in_prod;
+ mb();
+ BUG_ON((prod - cons) > sizeof(intf->in));
+
+ while (cons != prod) {
+ xencons_rx(intf->in+MASK_XENCONS_IDX(cons,intf->in), 1, regs);
+ cons++;
+ }
+
+ mb();
+ intf->in_cons = cons;
+
+ notify_daemon(dev);
+
+ xencons_tx();
+#endif
+}
+
+#ifdef HAVE_LIBC
+int xencons_ring_avail(struct consfront_dev *dev)
+{
+ struct xencons_interface *intf;
+ XENCONS_RING_IDX cons, prod;
+
+ if (!dev)
+ intf = xencons_interface();
+ else
+ intf = dev->ring;
+
+ cons = intf->in_cons;
+ prod = intf->in_prod;
+ mb();
+ BUG_ON((prod - cons) > sizeof(intf->in));
+
+ return prod - cons;
+}
+
+int xencons_ring_recv(struct consfront_dev *dev, char *data, unsigned len)
+{
+ struct xencons_interface *intf;
+ XENCONS_RING_IDX cons, prod;
+ unsigned filled = 0;
+
+ if (!dev)
+ intf = xencons_interface();
+ else
+ intf = dev->ring;
+
+ cons = intf->in_cons;
+ prod = intf->in_prod;
+ mb();
+ BUG_ON((prod - cons) > sizeof(intf->in));
+
+ while (filled < len && cons + filled != prod) {
+ data[filled] = *(intf->in + MASK_XENCONS_IDX(cons + filled,
intf->in));
+ filled++;
+ }
+
+ mb();
+ intf->in_cons = cons + filled;
+
+ notify_daemon(dev);
+
+ return filled;
+}
+#endif
+
+struct consfront_dev *xencons_ring_init(void)
+{
+ struct consfront_dev *dev;
+
+ if (!console_evtchn)
+ return 0;
+
+ dev = malloc(sizeof(struct consfront_dev));
+ memset(dev, 0, sizeof(struct consfront_dev));
+ dev->nodename = "device/console";
+ dev->dom = 0;
+ dev->backend = 0;
+ dev->ring_ref = 0;
+
+#ifdef HAVE_LIBC
+ dev->fd = -1;
+#endif
+
+ return resume_xen_console(dev);
+}
+
+static struct consfront_dev* resume_xen_console(struct consfront_dev* dev)
+{
+ int err;
+
+ dev->evtchn = console_evtchn;
+ dev->ring = xencons_interface();
+
+ err = bind_evtchn(dev->evtchn, console_handle_input, dev);
+ if (err <= 0) {
+ printk("XEN console request chn bind failed %i\n", err);
+ free(dev);
+ return NULL;
+ }
+ unmask_evtchn(dev->evtchn);
+
+ /* In case we have in-flight data after save/restore... */
+ notify_daemon(dev);
+
+ return dev;
+}
+
+void xencons_ring_fini(struct consfront_dev* dev)
+{
+ if (dev)
+ mask_evtchn(dev->evtchn);
+}
+
+void xencons_ring_resume(struct consfront_dev* dev)
+{
+ if (dev) {
+#if CONFIG_PARAVIRT
+ get_console(&start_info);
+#else
+ get_console(0);
+#endif
+ resume_xen_console(dev);
+ }
+}
diff --git a/console/console.c b/console/console.c
deleted file mode 100644
index 68c8435..0000000
--- a/console/console.c
+++ /dev/null
@@ -1,177 +0,0 @@
-/*
- ****************************************************************************
- * (C) 2006 - Grzegorz Milos - Cambridge University
- ****************************************************************************
- *
- * File: console.h
- * Author: Grzegorz Milos
- * Changes:
- *
- * Date: Mar 2006
- *
- * Environment: Xen Minimal OS
- * Description: Console interface.
- *
- * Handles console I/O. Defines printk.
- *
- ****************************************************************************
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to
- * deal in the Software without restriction, including without limitation the
- * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
- * sell copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- */
-
-#include <mini-os/types.h>
-#include <mini-os/wait.h>
-#include <mini-os/mm.h>
-#include <mini-os/hypervisor.h>
-#include <mini-os/events.h>
-#include <mini-os/os.h>
-#include <mini-os/lib.h>
-#include <mini-os/xenbus.h>
-#include <xen/io/console.h>
-
-
-/* If console not initialised the printk will be sent to xen serial line
- NOTE: you need to enable verbose in xen/Rules.mk for it to work. */
-static struct consfront_dev* xen_console = NULL;
-static int console_initialised = 0;
-
-__attribute__((weak)) void console_input(char * buf, unsigned len)
-{
- if(len > 0)
- {
- /* Just repeat what's written */
- buf[len] = '\0';
- printk("%s", buf);
-
- if(buf[len-1] == '\r')
- printk("\nNo console input handler.\n");
- }
-}
-
-#ifndef HAVE_LIBC
-void xencons_rx(char *buf, unsigned len, struct pt_regs *regs)
-{
- console_input(buf, len);
-}
-
-void xencons_tx(void)
-{
- /* Do nothing, handled by _rx */
-}
-#endif
-
-
-void console_print(struct consfront_dev *dev, const char *data, int length)
-{
- char *curr_char, saved_char;
- char copied_str[length+1];
- char *copied_ptr;
- int part_len;
- int (*ring_send_fn)(struct consfront_dev *dev, const char *data, unsigned
length);
-
- if(!console_initialised)
- ring_send_fn = xencons_ring_send_no_notify;
- else
- ring_send_fn = xencons_ring_send;
-
- if (dev && dev->is_raw) {
- ring_send_fn(dev, data, length);
- return;
- }
-
- copied_ptr = copied_str;
- memcpy(copied_ptr, data, length);
- for(curr_char = copied_ptr; curr_char < copied_ptr+length-1; curr_char++)
- {
- if(*curr_char == '\n')
- {
- *curr_char = '\r';
- saved_char = *(curr_char+1);
- *(curr_char+1) = '\n';
- part_len = curr_char - copied_ptr + 2;
- ring_send_fn(dev, copied_ptr, part_len);
- *(curr_char+1) = saved_char;
- copied_ptr = curr_char+1;
- length -= part_len - 1;
- }
- }
-
- if (copied_ptr[length-1] == '\n') {
- copied_ptr[length-1] = '\r';
- copied_ptr[length] = '\n';
- length++;
- }
-
- ring_send_fn(dev, copied_ptr, length);
-}
-
-void print(int direct, const char *fmt, va_list args)
-{
- static char __print_buf[1024];
-
- (void)vsnprintf(__print_buf, sizeof(__print_buf), fmt, args);
-
- if(direct)
- {
- (void)HYPERVISOR_console_io(CONSOLEIO_write, strlen(__print_buf),
__print_buf);
- return;
- } else {
-#ifndef CONFIG_USE_XEN_CONSOLE
- if(!console_initialised)
-#endif
- (void)HYPERVISOR_console_io(CONSOLEIO_write, strlen(__print_buf),
__print_buf);
-
- console_print(NULL, __print_buf, strlen(__print_buf));
- }
-}
-
-void printk(const char *fmt, ...)
-{
- va_list args;
- va_start(args, fmt);
- print(0, fmt, args);
- va_end(args);
-}
-
-void xprintk(const char *fmt, ...)
-{
- va_list args;
- va_start(args, fmt);
- print(1, fmt, args);
- va_end(args);
-}
-void init_console(void)
-{
- printk("Initialising console ... ");
- xen_console = xencons_ring_init();
- console_initialised = 1;
- /* This is also required to notify the daemon */
- printk("done.\n");
-}
-
-void suspend_console(void)
-{
- console_initialised = 0;
- xencons_ring_fini(xen_console);
-}
-
-void resume_console(void)
-{
- xencons_ring_resume(xen_console);
- console_initialised = 1;
-}
diff --git a/console/xencons_ring.c b/console/xencons_ring.c
deleted file mode 100644
index 495f0a1..0000000
--- a/console/xencons_ring.c
+++ /dev/null
@@ -1,238 +0,0 @@
-#include <mini-os/types.h>
-#include <mini-os/wait.h>
-#include <mini-os/mm.h>
-#include <mini-os/hypervisor.h>
-#include <mini-os/events.h>
-#include <mini-os/os.h>
-#include <mini-os/lib.h>
-#include <mini-os/console.h>
-#include <mini-os/xenbus.h>
-#include <xen/io/console.h>
-#include <xen/io/protocols.h>
-#include <xen/io/ring.h>
-#include <xen/hvm/params.h>
-#include <mini-os/xmalloc.h>
-#include <mini-os/gnttab.h>
-
-DECLARE_WAIT_QUEUE_HEAD(console_queue);
-
-static struct xencons_interface *console_ring;
-uint32_t console_evtchn;
-
-static struct consfront_dev* resume_xen_console(struct consfront_dev* dev);
-
-#ifdef CONFIG_PARAVIRT
-void get_console(void *p)
-{
- start_info_t *si = p;
-
- console_ring = mfn_to_virt(si->console.domU.mfn);
- console_evtchn = si->console.domU.evtchn;
-}
-#else
-void get_console(void *p)
-{
- uint64_t v = -1;
-
- if (hvm_get_parameter(HVM_PARAM_CONSOLE_EVTCHN, &v))
- BUG();
- console_evtchn = v;
-
- if (hvm_get_parameter(HVM_PARAM_CONSOLE_PFN, &v))
- BUG();
- console_ring = (struct xencons_interface *)map_frame_virt(v);
-}
-#endif
-
-static inline void notify_daemon(struct consfront_dev *dev)
-{
- /* Use evtchn: this is called early, before irq is set up. */
- if (!dev)
- notify_remote_via_evtchn(console_evtchn);
- else
- notify_remote_via_evtchn(dev->evtchn);
-}
-
-static inline struct xencons_interface *xencons_interface(void)
-{
- return console_evtchn ? console_ring : NULL;
-}
-
-int xencons_ring_send_no_notify(struct consfront_dev *dev, const char *data,
unsigned len)
-{
- int sent = 0;
- struct xencons_interface *intf;
- XENCONS_RING_IDX cons, prod;
-
- if (!dev)
- intf = xencons_interface();
- else
- intf = dev->ring;
- if (!intf)
- return sent;
-
- cons = intf->out_cons;
- prod = intf->out_prod;
- mb();
- BUG_ON((prod - cons) > sizeof(intf->out));
-
- while ((sent < len) && ((prod - cons) < sizeof(intf->out)))
- intf->out[MASK_XENCONS_IDX(prod++, intf->out)] = data[sent++];
-
- wmb();
- intf->out_prod = prod;
-
- return sent;
-}
-
-int xencons_ring_send(struct consfront_dev *dev, const char *data, unsigned
len)
-{
- int sent;
-
- sent = xencons_ring_send_no_notify(dev, data, len);
- notify_daemon(dev);
-
- return sent;
-}
-
-void console_handle_input(evtchn_port_t port, struct pt_regs *regs, void *data)
-{
- struct consfront_dev *dev = (struct consfront_dev *) data;
-#ifdef HAVE_LIBC
- struct file *file = dev ? get_file_from_fd(dev->fd) : NULL;
-
- if ( file )
- file->read = true;
-
- wake_up(&console_queue);
-#else
- struct xencons_interface *intf = xencons_interface();
- XENCONS_RING_IDX cons, prod;
-
- cons = intf->in_cons;
- prod = intf->in_prod;
- mb();
- BUG_ON((prod - cons) > sizeof(intf->in));
-
- while (cons != prod) {
- xencons_rx(intf->in+MASK_XENCONS_IDX(cons,intf->in), 1, regs);
- cons++;
- }
-
- mb();
- intf->in_cons = cons;
-
- notify_daemon(dev);
-
- xencons_tx();
-#endif
-}
-
-#ifdef HAVE_LIBC
-int xencons_ring_avail(struct consfront_dev *dev)
-{
- struct xencons_interface *intf;
- XENCONS_RING_IDX cons, prod;
-
- if (!dev)
- intf = xencons_interface();
- else
- intf = dev->ring;
-
- cons = intf->in_cons;
- prod = intf->in_prod;
- mb();
- BUG_ON((prod - cons) > sizeof(intf->in));
-
- return prod - cons;
-}
-
-int xencons_ring_recv(struct consfront_dev *dev, char *data, unsigned len)
-{
- struct xencons_interface *intf;
- XENCONS_RING_IDX cons, prod;
- unsigned filled = 0;
-
- if (!dev)
- intf = xencons_interface();
- else
- intf = dev->ring;
-
- cons = intf->in_cons;
- prod = intf->in_prod;
- mb();
- BUG_ON((prod - cons) > sizeof(intf->in));
-
- while (filled < len && cons + filled != prod) {
- data[filled] = *(intf->in + MASK_XENCONS_IDX(cons + filled,
intf->in));
- filled++;
- }
-
- mb();
- intf->in_cons = cons + filled;
-
- notify_daemon(dev);
-
- return filled;
-}
-#endif
-
-struct consfront_dev *xencons_ring_init(void)
-{
- struct consfront_dev *dev;
-
- if (!console_evtchn)
- return 0;
-
- dev = malloc(sizeof(struct consfront_dev));
- memset(dev, 0, sizeof(struct consfront_dev));
- dev->nodename = "device/console";
- dev->dom = 0;
- dev->backend = 0;
- dev->ring_ref = 0;
-
-#ifdef HAVE_LIBC
- dev->fd = -1;
-#endif
-
- return resume_xen_console(dev);
-}
-
-static struct consfront_dev* resume_xen_console(struct consfront_dev* dev)
-{
- int err;
-
- dev->evtchn = console_evtchn;
- dev->ring = xencons_interface();
-
- err = bind_evtchn(dev->evtchn, console_handle_input, dev);
- if (err <= 0) {
- printk("XEN console request chn bind failed %i\n", err);
- free(dev);
- return NULL;
- }
- unmask_evtchn(dev->evtchn);
-
- /* In case we have in-flight data after save/restore... */
- notify_daemon(dev);
-
- return dev;
-}
-
-void xencons_ring_fini(struct consfront_dev* dev)
-{
- if (dev)
- mask_evtchn(dev->evtchn);
-}
-
-void xencons_ring_resume(struct consfront_dev* dev)
-{
- if (dev) {
-#if CONFIG_PARAVIRT
- get_console(&start_info);
-#else
- get_console(0);
-#endif
- resume_xen_console(dev);
- }
-}
--
generated by git-patchbot for /home/xen/git/mini-os.git#master
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