Merge upstream QEMU 10.0.50 into the Android source tree.

This change integrates many changes from the upstream QEMU sources.
Its main purpose is to enable correct ARMv6 and ARMv7 support to the
Android emulator. Due to the nature of the upstream code base, this
unfortunately also required changes to many other parts of the source.

Note that to ensure easier integrations in the future, some source files
and directories that have heavy Android-specific customization have been
renamed with an -android suffix. The original files are still there for
easier integration tracking, but *never* compiled. For example:

  net.c        net-android.c
  qemu-char.c  qemu-char-android.c
  slirp/       slirp-android/
  etc...

Tested on linux-x86, darwin-x86 and windows host machines.

1 files changed, 254 insertions, 72 deletions

diff --git a/usb-linux.c b/usb-linux.c
index 91acccd..67e4acd 100644
--- a/usb-linux.c
+++ b/usb-linux.c
@@ -7,6 +7,10 @@
  *      Support for host device auto connect & disconnect
  *      Major rewrite to support fully async operation
  *
+ * Copyright 2008 TJ <linux@tjworld.net>
+ *      Added flexible support for /dev/bus/usb /sys/bus/usb/devices in addition
+ *      to the legacy /proc/bus/usb USB device discovery and handling
+ *
  * 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
@@ -28,9 +32,8 @@
 
 #include "qemu-common.h"
 #include "qemu-timer.h"
-#include "console.h"
+#include "monitor.h"
 
-#if defined(__linux__)
 #include <dirent.h>
 #include <sys/ioctl.h>
 #include <signal.h>
@@ -72,9 +75,22 @@ static int usb_host_find_device(int *pbus_num, int *paddr,
 #define dprintf(...)
 #endif
 
-#define USBDEVFS_PATH "/proc/bus/usb"
+#define USBDBG_DEVOPENED "husb: opened %s/devices\n"
+
+#define USBPROCBUS_PATH "/proc/bus/usb"
 #define PRODUCT_NAME_SZ 32
 #define MAX_ENDPOINTS 16
+#define USBDEVBUS_PATH "/dev/bus/usb"
+#define USBSYSBUS_PATH "/sys/bus/usb"
+
+static char *usb_host_device_path;
+
+#define USB_FS_NONE 0
+#define USB_FS_PROC 1
+#define USB_FS_DEV 2
+#define USB_FS_SYS 3
+
+static int usb_fs_type;
 
 /* endpoint association data */
 struct endp_data {
@@ -425,10 +441,6 @@ static int usb_host_handle_data(USBHostDevice *s, USBPacket *p)
     int ret;
 
     aurb = async_alloc();
-    if (!aurb) {
-        dprintf("husb: async malloc failed\n");
-        return USB_RET_NAK;
-    }
     aurb->hdev   = s;
     aurb->packet = p;
 
@@ -569,10 +581,6 @@ static int usb_host_handle_control(USBHostDevice *s, USBPacket *p)
     /* The rest are asynchronous */
 
     aurb = async_alloc();
-    if (!aurb) {
-        dprintf("husb: async malloc failed\n");
-        return USB_RET_NAK;
-    }
     aurb->hdev   = s;
     aurb->packet = p;
 
@@ -771,7 +779,7 @@ static int usb_linux_update_endp_table(USBHostDevice *s)
 {
     uint8_t *descriptors;
     uint8_t devep, type, configuration, alt_interface;
-    struct usbdevfs_ctrltransfer ct;
+    struct usb_ctrltransfer ct;
     int interface, ret, length, i;
 
     ct.bRequestType = USB_DIR_IN;
@@ -825,8 +833,7 @@ static int usb_linux_update_endp_table(USBHostDevice *s)
 
         ret = ioctl(s->fd, USBDEVFS_CONTROL, &ct);
         if (ret < 0) {
-            perror("usb_linux_update_endp_table");
-            return 1;
+            alt_interface = interface;
         }
 
         /* the current interface descriptor is the active interface
@@ -882,21 +889,24 @@ static USBDevice *usb_host_device_open_addr(int bus_num, int addr, const char *p
     char buf[1024];
 
     dev = qemu_mallocz(sizeof(USBHostDevice));
-    if (!dev)
-        goto fail;
 
     dev->bus_num = bus_num;
     dev->addr = addr;
 
     printf("husb: open device %d.%d\n", bus_num, addr);
 
-    snprintf(buf, sizeof(buf), USBDEVFS_PATH "/%03d/%03d",
+    if (!usb_host_device_path) {
+        perror("husb: USB Host Device Path not set");
+        goto fail;
+    }
+    snprintf(buf, sizeof(buf), "%s/%03d/%03d", usb_host_device_path,
              bus_num, addr);
     fd = open(buf, O_RDWR | O_NONBLOCK);
     if (fd < 0) {
         perror(buf);
         goto fail;
     }
+    dprintf("husb: opened %s\n", buf);
 
     /* read the device description */
     dev->descr_len = read(fd, dev->descr, sizeof(dev->descr));
@@ -974,6 +984,7 @@ static int usb_host_auto_del(const char *spec);
 
 USBDevice *usb_host_device_open(const char *devname)
 {
+    Monitor *mon = cur_mon;
     int bus_num, addr;
     char product_name[PRODUCT_NAME_SZ];
 
@@ -987,7 +998,8 @@ USBDevice *usb_host_device_open(const char *devname)
         return NULL;
 
     if (hostdev_find(bus_num, addr)) {
-       term_printf("husb: host usb device %d.%d is already open\n", bus_num, addr);
+       monitor_printf(mon, "husb: host usb device %d.%d is already open\n",
+                      bus_num, addr);
        return NULL;
     }
 
@@ -1026,7 +1038,7 @@ static int get_tag_value(char *buf, int buf_size,
     if (!p)
         return -1;
     p += strlen(tag);
-    while (isspace(*p))
+    while (qemu_isspace(*p))
         p++;
     q = buf;
     while (*p != '\0' && !strchr(stopchars, *p)) {
@@ -1038,23 +1050,33 @@ static int get_tag_value(char *buf, int buf_size,
     return q - buf;
 }
 
-static int usb_host_scan(void *opaque, USBScanFunc *func)
+/*
+ * Use /proc/bus/usb/devices or /dev/bus/usb/devices file to determine
+ * host's USB devices. This is legacy support since many distributions
+ * are moving to /sys/bus/usb
+ */
+static int usb_host_scan_dev(void *opaque, USBScanFunc *func)
 {
-    FILE *f;
+    FILE *f = 0;
     char line[1024];
     char buf[1024];
     int bus_num, addr, speed, device_count, class_id, product_id, vendor_id;
-    int ret;
     char product_name[512];
+    int ret = 0;
 
-    f = fopen(USBDEVFS_PATH "/devices", "r");
+    if (!usb_host_device_path) {
+        perror("husb: USB Host Device Path not set");
+        goto the_end;
+    }
+    snprintf(line, sizeof(line), "%s/devices", usb_host_device_path);
+    f = fopen(line, "r");
     if (!f) {
-        term_printf("husb: could not open %s\n", USBDEVFS_PATH "/devices");
-        return 0;
+        perror("husb: cannot open devices file");
+        goto the_end;
     }
+
     device_count = 0;
     bus_num = addr = speed = class_id = product_id = vendor_id = 0;
-    ret = 0;
     for(;;) {
         if (fgets(line, sizeof(line), f) == NULL)
             break;
@@ -1111,7 +1133,191 @@ static int usb_host_scan(void *opaque, USBScanFunc *func)
                    product_id, product_name, speed);
     }
  the_end:
-    fclose(f);
+    if (f)
+        fclose(f);
+    return ret;
+}
+
+/*
+ * Read sys file-system device file
+ *
+ * @line address of buffer to put file contents in
+ * @line_size size of line
+ * @device_file path to device file (printf format string)
+ * @device_name device being opened (inserted into device_file)
+ *
+ * @return 0 failed, 1 succeeded ('line' contains data)
+ */
+static int usb_host_read_file(char *line, size_t line_size, const char *device_file, const char *device_name)
+{
+    Monitor *mon = cur_mon;
+    FILE *f;
+    int ret = 0;
+    char filename[PATH_MAX];
+
+    snprintf(filename, PATH_MAX, USBSYSBUS_PATH "/devices/%s/%s", device_name,
+             device_file);
+    f = fopen(filename, "r");
+    if (f) {
+        fgets(line, line_size, f);
+        fclose(f);
+        ret = 1;
+    } else {
+        monitor_printf(mon, "husb: could not open %s\n", filename);
+    }
+
+    return ret;
+}
+
+/*
+ * Use /sys/bus/usb/devices/ directory to determine host's USB
+ * devices.
+ *
+ * This code is based on Robert Schiele's original patches posted to
+ * the Novell bug-tracker https://bugzilla.novell.com/show_bug.cgi?id=241950
+ */
+static int usb_host_scan_sys(void *opaque, USBScanFunc *func)
+{
+    DIR *dir = 0;
+    char line[1024];
+    int bus_num, addr, speed, class_id, product_id, vendor_id;
+    int ret = 0;
+    char product_name[512];
+    struct dirent *de;
+
+    dir = opendir(USBSYSBUS_PATH "/devices");
+    if (!dir) {
+        perror("husb: cannot open devices directory");
+        goto the_end;
+    }
+
+    while ((de = readdir(dir))) {
+        if (de->d_name[0] != '.' && !strchr(de->d_name, ':')) {
+            char *tmpstr = de->d_name;
+            if (!strncmp(de->d_name, "usb", 3))
+                tmpstr += 3;
+            bus_num = atoi(tmpstr);
+
+            if (!usb_host_read_file(line, sizeof(line), "devnum", de->d_name))
+                goto the_end;
+            if (sscanf(line, "%d", &addr) != 1)
+                goto the_end;
+
+            if (!usb_host_read_file(line, sizeof(line), "bDeviceClass",
+                                    de->d_name))
+                goto the_end;
+            if (sscanf(line, "%x", &class_id) != 1)
+                goto the_end;
+
+            if (!usb_host_read_file(line, sizeof(line), "idVendor", de->d_name))
+                goto the_end;
+            if (sscanf(line, "%x", &vendor_id) != 1)
+                goto the_end;
+
+            if (!usb_host_read_file(line, sizeof(line), "idProduct",
+                                    de->d_name))
+                goto the_end;
+            if (sscanf(line, "%x", &product_id) != 1)
+                goto the_end;
+
+            if (!usb_host_read_file(line, sizeof(line), "product",
+                                    de->d_name)) {
+                *product_name = 0;
+            } else {
+                if (strlen(line) > 0)
+                    line[strlen(line) - 1] = '\0';
+                pstrcpy(product_name, sizeof(product_name), line);
+            }
+
+            if (!usb_host_read_file(line, sizeof(line), "speed", de->d_name))
+                goto the_end;
+            if (!strcmp(line, "480\n"))
+                speed = USB_SPEED_HIGH;
+            else if (!strcmp(line, "1.5\n"))
+                speed = USB_SPEED_LOW;
+            else
+                speed = USB_SPEED_FULL;
+
+            ret = func(opaque, bus_num, addr, class_id, vendor_id,
+                       product_id, product_name, speed);
+            if (ret)
+                goto the_end;
+        }
+    }
+ the_end:
+    if (dir)
+        closedir(dir);
+    return ret;
+}
+
+/*
+ * Determine how to access the host's USB devices and call the
+ * specific support function.
+ */
+static int usb_host_scan(void *opaque, USBScanFunc *func)
+{
+    Monitor *mon = cur_mon;
+    FILE *f = 0;
+    DIR *dir = 0;
+    int ret = 0;
+    const char *fs_type[] = {"unknown", "proc", "dev", "sys"};
+    char devpath[PATH_MAX];
+
+    /* only check the host once */
+    if (!usb_fs_type) {
+        f = fopen(USBPROCBUS_PATH "/devices", "r");
+        if (f) {
+            /* devices found in /proc/bus/usb/ */
+            strcpy(devpath, USBPROCBUS_PATH);
+            usb_fs_type = USB_FS_PROC;
+            fclose(f);
+            dprintf(USBDBG_DEVOPENED, USBPROCBUS_PATH);
+            goto found_devices;
+        }
+        /* try additional methods if an access method hasn't been found yet */
+        f = fopen(USBDEVBUS_PATH "/devices", "r");
+        if (f) {
+            /* devices found in /dev/bus/usb/ */
+            strcpy(devpath, USBDEVBUS_PATH);
+            usb_fs_type = USB_FS_DEV;
+            fclose(f);
+            dprintf(USBDBG_DEVOPENED, USBDEVBUS_PATH);
+            goto found_devices;
+        }
+        dir = opendir(USBSYSBUS_PATH "/devices");
+        if (dir) {
+            /* devices found in /dev/bus/usb/ (yes - not a mistake!) */
+            strcpy(devpath, USBDEVBUS_PATH);
+            usb_fs_type = USB_FS_SYS;
+            closedir(dir);
+            dprintf(USBDBG_DEVOPENED, USBSYSBUS_PATH);
+            goto found_devices;
+        }
+    found_devices:
+        if (!usb_fs_type) {
+            monitor_printf(mon, "husb: unable to access USB devices\n");
+            return -ENOENT;
+        }
+
+        /* the module setting (used later for opening devices) */
+        usb_host_device_path = qemu_mallocz(strlen(devpath)+1);
+        strcpy(usb_host_device_path, devpath);
+        monitor_printf(mon, "husb: using %s file-system with %s\n",
+                       fs_type[usb_fs_type], usb_host_device_path);
+    }
+
+    switch (usb_fs_type) {
+    case USB_FS_PROC:
+    case USB_FS_DEV:
+        ret = usb_host_scan_dev(opaque, func);
+        break;
+    case USB_FS_SYS:
+        ret = usb_host_scan_sys(opaque, func);
+        break;
+    default:
+        ret = -EINVAL;
+        break;
+    }
     return ret;
 }
 
@@ -1237,10 +1443,6 @@ static int usb_host_auto_add(const char *spec)
         return -1;
 
     f = qemu_mallocz(sizeof(*f));
-    if (!f) {
-        fprintf(stderr, "husb: failed to allocate auto filter\n");
-        return -1;
-    }
 
     *f = filter; 
 
@@ -1408,6 +1610,7 @@ static void usb_info_device(int bus_num, int addr, int class_id,
                             const char *product_name,
                             int speed)
 {
+    Monitor *mon = cur_mon;
     const char *class_str, *speed_str;
 
     switch(speed) {
@@ -1425,17 +1628,17 @@ static void usb_info_device(int bus_num, int addr, int class_id,
         break;
     }
 
-    term_printf("  Device %d.%d, speed %s Mb/s\n",
+    monitor_printf(mon, "  Device %d.%d, speed %s Mb/s\n",
                 bus_num, addr, speed_str);
     class_str = usb_class_str(class_id);
     if (class_str)
-        term_printf("    %s:", class_str);
+        monitor_printf(mon, "    %s:", class_str);
     else
-        term_printf("    Class %02x:", class_id);
-    term_printf(" USB device %04x:%04x", vendor_id, product_id);
+        monitor_printf(mon, "    Class %02x:", class_id);
+    monitor_printf(mon, " USB device %04x:%04x", vendor_id, product_id);
     if (product_name[0] != '\0')
-        term_printf(", %s", product_name);
-    term_printf("\n");
+        monitor_printf(mon, ", %s", product_name);
+    monitor_printf(mon, "\n");
 }
 
 static int usb_host_info_device(void *opaque, int bus_num, int addr,
@@ -1449,58 +1652,37 @@ static int usb_host_info_device(void *opaque, int bus_num, int addr,
     return 0;
 }
 
-static void dec2str(int val, char *str)
+static void dec2str(int val, char *str, size_t size)
 {
     if (val == -1)
-        strcpy(str, "*");
+        snprintf(str, size, "*");
     else
-        sprintf(str, "%d", val); 
+        snprintf(str, size, "%d", val); 
 }
 
-static void hex2str(int val, char *str)
+static void hex2str(int val, char *str, size_t size)
 {
     if (val == -1)
-        strcpy(str, "*");
+        snprintf(str, size, "*");
     else
-        sprintf(str, "%x", val);
+        snprintf(str, size, "%x", val);
 }
 
-void usb_host_info(void)
+void usb_host_info(Monitor *mon)
 {
     struct USBAutoFilter *f;
 
     usb_host_scan(NULL, usb_host_info_device);
 
     if (usb_auto_filter)
-        term_printf("  Auto filters:\n");
+        monitor_printf(mon, "  Auto filters:\n");
     for (f = usb_auto_filter; f; f = f->next) {
         char bus[10], addr[10], vid[10], pid[10];
-        dec2str(f->bus_num, bus);
-        dec2str(f->addr, addr);
-        hex2str(f->vendor_id, vid);
-        hex2str(f->product_id, pid);
-    	term_printf("    Device %s.%s ID %s:%s\n", bus, addr, vid, pid);
+        dec2str(f->bus_num, bus, sizeof(bus));
+        dec2str(f->addr, addr, sizeof(addr));
+        hex2str(f->vendor_id, vid, sizeof(vid));
+        hex2str(f->product_id, pid, sizeof(pid));
+        monitor_printf(mon, "    Device %s.%s ID %s:%s\n",
+                       bus, addr, vid, pid);
     }
 }
-
-#else
-
-#include "hw/usb.h"
-
-void usb_host_info(void)
-{
-    term_printf("USB host devices not supported\n");
-}
-
-/* XXX: modify configure to compile the right host driver */
-USBDevice *usb_host_device_open(const char *devname)
-{
-    return NULL;
-}
-
-int usb_host_device_close(const char *devname)
-{
-    return 0;
-}
-
-#endif