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authorPaolo Bonzini <pbonzini@redhat.com>2013-03-01 13:59:19 +0100
committerPaolo Bonzini <pbonzini@redhat.com>2013-04-08 18:13:12 +0200
commit49ab747f668f421138d5b40d83fa279c4c5e278d (patch)
tree943225a04eac885aed038731adf058f2250a2f40 /hw/xen_console.c
parentce3b494cb504f96992f2d37ebc8f56deed202b06 (diff)
downloadfocaccia-qemu-49ab747f668f421138d5b40d83fa279c4c5e278d.tar.gz
focaccia-qemu-49ab747f668f421138d5b40d83fa279c4c5e278d.zip
hw: move target-independent files to subdirectories
This patch tackles all files that are compiled once, moving
them to subdirectories of hw/.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hw/xen_console.c')
-rw-r--r--hw/xen_console.c305
1 files changed, 0 insertions, 305 deletions
diff --git a/hw/xen_console.c b/hw/xen_console.c
deleted file mode 100644
index efc32320fa..0000000000
--- a/hw/xen_console.c
+++ /dev/null
@@ -1,305 +0,0 @@
-/*
- *  Copyright (C) International Business Machines  Corp., 2005
- *  Author(s): Anthony Liguori <aliguori@us.ibm.com>
- *
- *  Copyright (C) Red Hat 2007
- *
- *  Xen Console
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; under version 2 of the License.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License along
- *  with this program; if not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <stdlib.h>
-#include <errno.h>
-#include <string.h>
-#include <sys/select.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <termios.h>
-#include <stdarg.h>
-#include <sys/mman.h>
-
-#include "hw/hw.h"
-#include "char/char.h"
-#include "hw/xen/xen_backend.h"
-
-#include <xen/io/console.h>
-
-struct buffer {
-    uint8_t *data;
-    size_t consumed;
-    size_t size;
-    size_t capacity;
-    size_t max_capacity;
-};
-
-struct XenConsole {
-    struct XenDevice  xendev;  /* must be first */
-    struct buffer     buffer;
-    char              console[XEN_BUFSIZE];
-    int               ring_ref;
-    void              *sring;
-    CharDriverState   *chr;
-    int               backlog;
-};
-
-static void buffer_append(struct XenConsole *con)
-{
-    struct buffer *buffer = &con->buffer;
-    XENCONS_RING_IDX cons, prod, size;
-    struct xencons_interface *intf = con->sring;
-
-    cons = intf->out_cons;
-    prod = intf->out_prod;
-    xen_mb();
-
-    size = prod - cons;
-    if ((size == 0) || (size > sizeof(intf->out)))
-	return;
-
-    if ((buffer->capacity - buffer->size) < size) {
-	buffer->capacity += (size + 1024);
-	buffer->data = g_realloc(buffer->data, buffer->capacity);
-    }
-
-    while (cons != prod)
-	buffer->data[buffer->size++] = intf->out[
-	    MASK_XENCONS_IDX(cons++, intf->out)];
-
-    xen_mb();
-    intf->out_cons = cons;
-    xen_be_send_notify(&con->xendev);
-
-    if (buffer->max_capacity &&
-	buffer->size > buffer->max_capacity) {
-	/* Discard the middle of the data. */
-
-	size_t over = buffer->size - buffer->max_capacity;
-	uint8_t *maxpos = buffer->data + buffer->max_capacity;
-
-	memmove(maxpos - over, maxpos, over);
-	buffer->data = g_realloc(buffer->data, buffer->max_capacity);
-	buffer->size = buffer->capacity = buffer->max_capacity;
-
-	if (buffer->consumed > buffer->max_capacity - over)
-	    buffer->consumed = buffer->max_capacity - over;
-    }
-}
-
-static void buffer_advance(struct buffer *buffer, size_t len)
-{
-    buffer->consumed += len;
-    if (buffer->consumed == buffer->size) {
-	buffer->consumed = 0;
-	buffer->size = 0;
-    }
-}
-
-static int ring_free_bytes(struct XenConsole *con)
-{
-    struct xencons_interface *intf = con->sring;
-    XENCONS_RING_IDX cons, prod, space;
-
-    cons = intf->in_cons;
-    prod = intf->in_prod;
-    xen_mb();
-
-    space = prod - cons;
-    if (space > sizeof(intf->in))
-	return 0; /* ring is screwed: ignore it */
-
-    return (sizeof(intf->in) - space);
-}
-
-static int xencons_can_receive(void *opaque)
-{
-    struct XenConsole *con = opaque;
-    return ring_free_bytes(con);
-}
-
-static void xencons_receive(void *opaque, const uint8_t *buf, int len)
-{
-    struct XenConsole *con = opaque;
-    struct xencons_interface *intf = con->sring;
-    XENCONS_RING_IDX prod;
-    int i, max;
-
-    max = ring_free_bytes(con);
-    /* The can_receive() func limits this, but check again anyway */
-    if (max < len)
-	len = max;
-
-    prod = intf->in_prod;
-    for (i = 0; i < len; i++) {
-	intf->in[MASK_XENCONS_IDX(prod++, intf->in)] =
-	    buf[i];
-    }
-    xen_wmb();
-    intf->in_prod = prod;
-    xen_be_send_notify(&con->xendev);
-}
-
-static void xencons_send(struct XenConsole *con)
-{
-    ssize_t len, size;
-
-    size = con->buffer.size - con->buffer.consumed;
-    if (con->chr)
-        len = qemu_chr_fe_write(con->chr, con->buffer.data + con->buffer.consumed,
-                             size);
-    else
-        len = size;
-    if (len < 1) {
-	if (!con->backlog) {
-	    con->backlog = 1;
-	    xen_be_printf(&con->xendev, 1, "backlog piling up, nobody listening?\n");
-	}
-    } else {
-	buffer_advance(&con->buffer, len);
-	if (con->backlog && len == size) {
-	    con->backlog = 0;
-	    xen_be_printf(&con->xendev, 1, "backlog is gone\n");
-	}
-    }
-}
-
-/* -------------------------------------------------------------------- */
-
-static int con_init(struct XenDevice *xendev)
-{
-    struct XenConsole *con = container_of(xendev, struct XenConsole, xendev);
-    char *type, *dom, label[32];
-    int ret = 0;
-    const char *output;
-
-    /* setup */
-    dom = xs_get_domain_path(xenstore, con->xendev.dom);
-    if (!xendev->dev) {
-        snprintf(con->console, sizeof(con->console), "%s/console", dom);
-    } else {
-        snprintf(con->console, sizeof(con->console), "%s/device/console/%d", dom, xendev->dev);
-    }
-    free(dom);
-
-    type = xenstore_read_str(con->console, "type");
-    if (!type || strcmp(type, "ioemu") != 0) {
-	xen_be_printf(xendev, 1, "not for me (type=%s)\n", type);
-        ret = -1;
-        goto out;
-    }
-
-    output = xenstore_read_str(con->console, "output");
-
-    /* no Xen override, use qemu output device */
-    if (output == NULL) {
-        con->chr = serial_hds[con->xendev.dev];
-    } else {
-        snprintf(label, sizeof(label), "xencons%d", con->xendev.dev);
-        con->chr = qemu_chr_new(label, output, NULL);
-    }
-
-    xenstore_store_pv_console_info(con->xendev.dev, con->chr);
-
-out:
-    g_free(type);
-    return ret;
-}
-
-static int con_initialise(struct XenDevice *xendev)
-{
-    struct XenConsole *con = container_of(xendev, struct XenConsole, xendev);
-    int limit;
-
-    if (xenstore_read_int(con->console, "ring-ref", &con->ring_ref) == -1)
-	return -1;
-    if (xenstore_read_int(con->console, "port", &con->xendev.remote_port) == -1)
-	return -1;
-    if (xenstore_read_int(con->console, "limit", &limit) == 0)
-	con->buffer.max_capacity = limit;
-
-    if (!xendev->dev) {
-        con->sring = xc_map_foreign_range(xen_xc, con->xendev.dom,
-                                          XC_PAGE_SIZE,
-                                          PROT_READ|PROT_WRITE,
-                                          con->ring_ref);
-    } else {
-        con->sring = xc_gnttab_map_grant_ref(xendev->gnttabdev, con->xendev.dom,
-                                             con->ring_ref,
-                                             PROT_READ|PROT_WRITE);
-    }
-    if (!con->sring)
-	return -1;
-
-    xen_be_bind_evtchn(&con->xendev);
-    if (con->chr) {
-        if (qemu_chr_fe_claim(con->chr) == 0) {
-            qemu_chr_add_handlers(con->chr, xencons_can_receive,
-                                  xencons_receive, NULL, con);
-        } else {
-            xen_be_printf(xendev, 0,
-                          "xen_console_init error chardev %s already used\n",
-                          con->chr->label);
-            con->chr = NULL;
-        }
-    }
-
-    xen_be_printf(xendev, 1, "ring mfn %d, remote port %d, local port %d, limit %zd\n",
-		  con->ring_ref,
-		  con->xendev.remote_port,
-		  con->xendev.local_port,
-		  con->buffer.max_capacity);
-    return 0;
-}
-
-static void con_disconnect(struct XenDevice *xendev)
-{
-    struct XenConsole *con = container_of(xendev, struct XenConsole, xendev);
-
-    if (!xendev->dev) {
-        return;
-    }
-    if (con->chr) {
-        qemu_chr_add_handlers(con->chr, NULL, NULL, NULL, NULL);
-        qemu_chr_fe_release(con->chr);
-    }
-    xen_be_unbind_evtchn(&con->xendev);
-
-    if (con->sring) {
-        if (!xendev->gnttabdev) {
-            munmap(con->sring, XC_PAGE_SIZE);
-        } else {
-            xc_gnttab_munmap(xendev->gnttabdev, con->sring, 1);
-        }
-	con->sring = NULL;
-    }
-}
-
-static void con_event(struct XenDevice *xendev)
-{
-    struct XenConsole *con = container_of(xendev, struct XenConsole, xendev);
-
-    buffer_append(con);
-    if (con->buffer.size - con->buffer.consumed)
-	xencons_send(con);
-}
-
-/* -------------------------------------------------------------------- */
-
-struct XenDevOps xen_console_ops = {
-    .size       = sizeof(struct XenConsole),
-    .flags      = DEVOPS_FLAG_IGNORE_STATE|DEVOPS_FLAG_NEED_GNTDEV,
-    .init       = con_init,
-    .initialise = con_initialise,
-    .event      = con_event,
-    .disconnect = con_disconnect,
-};