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[Qemu-ppc] [Qemu-devel][PATCH v7 1/3] Add USB option in machine options


From: Li Zhang
Subject: [Qemu-ppc] [Qemu-devel][PATCH v7 1/3] Add USB option in machine options
Date: Tue, 7 Aug 2012 10:41:58 +0800

When -usb option is used, global varible usb_enabled is set.
And all the plafrom will create one USB controller according
to this variable. In fact, global varibles make code hard
to read.

So this patch is to remove global variable usb_enabled and
add USB option in machine options. All the plaforms will get
USB option value from machine options.

USB option of machine options will be set either by:
  * -usb
  * -machine type=pseries,usb=on

Both these ways can work now. They both set USB option in
machine options. In the future, the first way will be removed.

Signed-off-by: Li Zhang <address@hidden>
---
 hw/nseries.c      |    9 +++++++++
 hw/pc_piix.c      |    6 ++++++
 hw/ppc_newworld.c |   10 +++++++++-
 hw/ppc_oldworld.c |    8 ++++++++
 hw/ppc_prep.c     |    7 +++++++
 hw/pxa2xx.c       |   15 +++++++++++++++
 hw/realview.c     |    8 ++++++++
 hw/spapr.c        |   12 ++++++++++++
 hw/versatilepb.c  |    8 ++++++++
 qemu-config.c     |    4 ++++
 sysemu.h          |    1 -
 vl.c              |   29 +++++++++++++++++++++++------
 12 files changed, 109 insertions(+), 8 deletions(-)

diff --git a/hw/nseries.c b/hw/nseries.c
index 4df2670..8e385b7 100644
--- a/hw/nseries.c
+++ b/hw/nseries.c
@@ -1282,6 +1282,9 @@ static void n8x0_init(ram_addr_t ram_size, const char 
*boot_device,
     int sdram_size = binfo->ram_size;
     DisplayState *ds;
 
+    QemuOpts *mach_opts;
+    bool usb_enabled = false;
+
     s->mpu = omap2420_mpu_init(sysmem, sdram_size, cpu_model);
 
     /* Setup peripherals
@@ -1322,6 +1325,12 @@ static void n8x0_init(ram_addr_t ram_size, const char 
*boot_device,
     n8x0_dss_setup(s);
     n8x0_cbus_setup(s);
     n8x0_uart_setup(s);
+
+    mach_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
+    if (mach_opts) {
+        usb_enabled = qemu_opt_get_bool(mach_opts, "usb", false);
+    }
+
     if (usb_enabled)
         n8x0_usb_setup(s);
 
diff --git a/hw/pc_piix.c b/hw/pc_piix.c
index 0c0096f..0bf25d0 100644
--- a/hw/pc_piix.c
+++ b/hw/pc_piix.c
@@ -148,6 +148,8 @@ static void pc_init1(MemoryRegion *system_memory,
     MemoryRegion *pci_memory;
     MemoryRegion *rom_memory;
     void *fw_cfg = NULL;
+    QemuOpts *mach_opts;
+    bool usb_enabled = false;
 
     pc_cpus_init(cpu_model);
 
@@ -267,6 +269,10 @@ static void pc_init1(MemoryRegion *system_memory,
     pc_cmos_init(below_4g_mem_size, above_4g_mem_size, boot_device,
                  floppy, idebus[0], idebus[1], rtc_state);
 
+    mach_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
+    if (mach_opts) {
+        usb_enabled = qemu_opt_get_bool(mach_opts, "usb", false);
+    }
     if (pci_enabled && usb_enabled) {
         pci_create_simple(pci_bus, piix3_devfn + 2, "piix3-usb-uhci");
     }
diff --git a/hw/ppc_newworld.c b/hw/ppc_newworld.c
index 4e2a6e6..1a324eb 100644
--- a/hw/ppc_newworld.c
+++ b/hw/ppc_newworld.c
@@ -159,6 +159,9 @@ static void ppc_core99_init (ram_addr_t ram_size,
 
     linux_boot = (kernel_filename != NULL);
 
+    QemuOpts *mach_opts;
+    bool usb_enabled = false;
+
     /* init CPUs */
     if (cpu_model == NULL)
 #ifdef TARGET_PPC64
@@ -350,7 +353,7 @@ static void ppc_core99_init (ram_addr_t ram_size,
 
     /* cuda also initialize ADB */
     if (machine_arch == ARCH_MAC99_U3) {
-        usb_enabled = 1;
+        usb_enabled = true;
     }
     cuda_init(&cuda_mem, pic[0x19]);
 
@@ -360,6 +363,11 @@ static void ppc_core99_init (ram_addr_t ram_size,
     macio_init(pci_bus, PCI_DEVICE_ID_APPLE_UNI_N_KEYL, 0, pic_mem,
                dbdma_mem, cuda_mem, NULL, 3, ide_mem, escc_bar);
 
+    mach_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
+    if (mach_opts) {
+        usb_enabled = qemu_opt_get_bool(mach_opts, "usb", true);
+    }
+
     if (usb_enabled) {
         pci_create_simple(pci_bus, -1, "pci-ohci");
     }
diff --git a/hw/ppc_oldworld.c b/hw/ppc_oldworld.c
index f2c6908..da05705 100644
--- a/hw/ppc_oldworld.c
+++ b/hw/ppc_oldworld.c
@@ -101,6 +101,9 @@ static void ppc_heathrow_init (ram_addr_t ram_size,
 
     linux_boot = (kernel_filename != NULL);
 
+    QemuOpts *mach_opts;
+    bool usb_enabled = true;
+
     /* init CPUs */
     if (cpu_model == NULL)
         cpu_model = "G3";
@@ -286,6 +289,11 @@ static void ppc_heathrow_init (ram_addr_t ram_size,
     macio_init(pci_bus, PCI_DEVICE_ID_APPLE_343S1201, 1, pic_mem,
                dbdma_mem, cuda_mem, nvr, 2, ide_mem, escc_bar);
 
+    mach_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
+    if (mach_opts) {
+        usb_enabled = qemu_opt_get_bool(mach_opts, "usb", true);
+    }
+
     if (usb_enabled) {
         pci_create_simple(pci_bus, -1, "pci-ohci");
     }
diff --git a/hw/ppc_prep.c b/hw/ppc_prep.c
index be2b268..dc294ae 100644
--- a/hw/ppc_prep.c
+++ b/hw/ppc_prep.c
@@ -484,6 +484,9 @@ static void ppc_prep_init (ram_addr_t ram_size,
 
     linux_boot = (kernel_filename != NULL);
 
+    QemuOpts *mach_opts;
+    bool usb_enabled = true;
+
     /* init CPUs */
     if (cpu_model == NULL)
         cpu_model = "602";
@@ -661,6 +664,10 @@ static void ppc_prep_init (ram_addr_t ram_size,
     memory_region_add_subregion(sysmem, 0xFEFF0000, xcsr);
 #endif
 
+    mach_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
+    if (mach_opts) {
+        usb_enabled = qemu_opt_get_bool(mach_opts, "usb", true);
+    }
     if (usb_enabled) {
         pci_create_simple(pci_bus, -1, "pci-ohci");
     }
diff --git a/hw/pxa2xx.c b/hw/pxa2xx.c
index d5f1420..ed87797 100644
--- a/hw/pxa2xx.c
+++ b/hw/pxa2xx.c
@@ -2007,6 +2007,9 @@ PXA2xxState *pxa270_init(MemoryRegion *address_space,
     PXA2xxState *s;
     int i;
     DriveInfo *dinfo;
+    QemuOpts *mach_opts;
+    bool usb_enabled = false;
+
     s = (PXA2xxState *) g_malloc0(sizeof(PXA2xxState));
 
     if (revision && strncmp(revision, "pxa27", 5)) {
@@ -2108,6 +2111,11 @@ PXA2xxState *pxa270_init(MemoryRegion *address_space,
         s->ssp[i] = (SSIBus *)qdev_get_child_bus(dev, "ssi");
     }
 
+    mach_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
+    if (mach_opts) {
+        usb_enabled = qemu_opt_get_bool(mach_opts, "usb", false);
+    }
+
     if (usb_enabled) {
         sysbus_create_simple("sysbus-ohci", 0x4c000000,
                         qdev_get_gpio_in(s->pic, PXA2XX_PIC_USBH1));
@@ -2144,6 +2152,8 @@ PXA2xxState *pxa255_init(MemoryRegion *address_space, 
unsigned int sdram_size)
     PXA2xxState *s;
     int i;
     DriveInfo *dinfo;
+    QemuOpts *mach_opts;
+    bool usb_enabled = false;
 
     s = (PXA2xxState *) g_malloc0(sizeof(PXA2xxState));
 
@@ -2239,6 +2249,11 @@ PXA2xxState *pxa255_init(MemoryRegion *address_space, 
unsigned int sdram_size)
         s->ssp[i] = (SSIBus *)qdev_get_child_bus(dev, "ssi");
     }
 
+    mach_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
+    if (mach_opts) {
+        usb_enabled = qemu_opt_get_bool(mach_opts, "usb", false);
+    }
+
     if (usb_enabled) {
         sysbus_create_simple("sysbus-ohci", 0x4c000000,
                         qdev_get_gpio_in(s->pic, PXA2XX_PIC_USBH1));
diff --git a/hw/realview.c b/hw/realview.c
index 19db4d0..543d5dc 100644
--- a/hw/realview.c
+++ b/hw/realview.c
@@ -73,6 +73,8 @@ static void realview_init(ram_addr_t ram_size,
     uint32_t proc_id = 0;
     uint32_t sys_id;
     ram_addr_t low_ram_size;
+    QemuOpts *mach_opts;
+    bool usb_enabled = true;
 
     switch (board_type) {
     case BOARD_EB:
@@ -227,6 +229,12 @@ static void realview_init(ram_addr_t ram_size,
         sysbus_connect_irq(busdev, 2, pic[50]);
         sysbus_connect_irq(busdev, 3, pic[51]);
         pci_bus = (PCIBus *)qdev_get_child_bus(dev, "pci");
+
+        mach_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
+        if (mach_opts) {
+            usb_enabled = qemu_opt_get_bool(mach_opts, "usb", true);
+        }
+
         if (usb_enabled) {
             pci_create_simple(pci_bus, -1, "pci-ohci");
         }
diff --git a/hw/spapr.c b/hw/spapr.c
index 81c9343..4dc5e59 100644
--- a/hw/spapr.c
+++ b/hw/spapr.c
@@ -575,6 +575,8 @@ static void ppc_spapr_init(ram_addr_t ram_size,
     long load_limit, rtas_limit, fw_size;
     long pteg_shift = 17;
     char *filename;
+    QemuOpts *mach_opts;
+    bool usb_enabled = true;
 
     spapr = g_malloc0(sizeof(*spapr));
     QLIST_INIT(&spapr->phbs);
@@ -710,6 +712,16 @@ static void ppc_spapr_init(ram_addr_t ram_size,
         spapr_vscsi_create(spapr->vio_bus);
     }
 
+    mach_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
+    if (mach_opts) {
+        usb_enabled = qemu_opt_get_bool(mach_opts, "usb", true);
+    }
+
+    if (usb_enabled) {
+        pci_create_simple(QLIST_FIRST(&spapr->phbs)->host_state.bus,
+                          -1, "pci-ohci");
+    }
+
     if (rma_size < (MIN_RMA_SLOF << 20)) {
         fprintf(stderr, "qemu: pSeries SLOF firmware requires >= "
                 "%ldM guest RMA (Real Mode Area memory)\n", MIN_RMA_SLOF);
diff --git a/hw/versatilepb.c b/hw/versatilepb.c
index 4fd5d9b..4b2f70d 100644
--- a/hw/versatilepb.c
+++ b/hw/versatilepb.c
@@ -188,6 +188,8 @@ static void versatile_init(ram_addr_t ram_size,
     int n;
     int done_smc = 0;
     DriveInfo *dinfo;
+    QemuOpts *mach_opts;
+    bool usb_enabled = false;
 
     if (!cpu_model) {
         cpu_model = "arm926";
@@ -247,6 +249,12 @@ static void versatile_init(ram_addr_t ram_size,
             pci_nic_init_nofail(nd, "rtl8139", NULL);
         }
     }
+
+    mach_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
+    if (mach_opts) {
+        usb_enabled = qemu_opt_get_bool(mach_opts, "usb", false);
+    }
+
     if (usb_enabled) {
         pci_create_simple(pci_bus, -1, "pci-ohci");
     }
diff --git a/qemu-config.c b/qemu-config.c
index 5c3296b..b86ee36 100644
--- a/qemu-config.c
+++ b/qemu-config.c
@@ -595,6 +595,10 @@ static QemuOptsList qemu_machine_opts = {
             .name = "dt_compatible",
             .type = QEMU_OPT_STRING,
             .help = "Overrides the \"compatible\" property of the dt root 
node",
+        },{
+            .name = "usb",
+            .type = QEMU_OPT_BOOL,
+            .help = "Set on/off to enable/disable usb",
         },
         { /* End of list */ }
     },
diff --git a/sysemu.h b/sysemu.h
index 4669348..7fbf8f4 100644
--- a/sysemu.h
+++ b/sysemu.h
@@ -118,7 +118,6 @@ extern const char *keyboard_layout;
 extern int win2k_install_hack;
 extern int alt_grab;
 extern int ctrl_grab;
-extern int usb_enabled;
 extern int smp_cpus;
 extern int max_cpus;
 extern int cursor_hide;
diff --git a/vl.c b/vl.c
index e71cb30..77e8962 100644
--- a/vl.c
+++ b/vl.c
@@ -198,7 +198,6 @@ CharDriverState *serial_hds[MAX_SERIAL_PORTS];
 CharDriverState *parallel_hds[MAX_PARALLEL_PORTS];
 CharDriverState *virtcon_hds[MAX_VIRTIO_CONSOLES];
 int win2k_install_hack = 0;
-int usb_enabled = 0;
 int singlestep = 0;
 int smp_cpus = 1;
 int max_cpus = 0;
@@ -1043,13 +1042,24 @@ static void smp_parse(const char *optarg)
 /***********************************************************/
 /* USB devices */
 
+static inline bool usb_enabled(bool default_usb)
+{
+    QemuOpts *mach_opts;
+    mach_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
+    if (mach_opts) {
+        return qemu_opt_get_bool(mach_opts, "usb", default_usb);
+    }
+    return default_usb;
+}
+
 static int usb_device_add(const char *devname)
 {
     const char *p;
     USBDevice *dev = NULL;
 
-    if (!usb_enabled)
+    if (!usb_enabled(false)) {
         return -1;
+    }
 
     /* drivers with .usbdevice_name entry in USBDeviceInfo */
     dev = usbdevice_create(devname);
@@ -1085,8 +1095,9 @@ static int usb_device_del(const char *devname)
     if (strstart(devname, "host:", &p))
         return usb_host_device_close(p);
 
-    if (!usb_enabled)
+    if (!usb_enabled(false)) {
         return -1;
+    }
 
     p = strchr(devname, '.');
     if (!p)
@@ -2977,10 +2988,16 @@ int main(int argc, char **argv, char **envp)
                 }
                 break;
             case QEMU_OPTION_usb:
-                usb_enabled = 1;
+                machine_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
+                if (machine_opts) {
+                    qemu_opt_set_bool(machine_opts, "usb", true);
+                }
                 break;
             case QEMU_OPTION_usbdevice:
-                usb_enabled = 1;
+                machine_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
+                if (machine_opts) {
+                    qemu_opt_set_bool(machine_opts, "usb", true);
+                }
                 add_device_config(DEV_USB, optarg);
                 break;
             case QEMU_OPTION_device:
@@ -3526,7 +3543,7 @@ int main(int argc, char **argv, char **envp)
     current_machine = machine;
 
     /* init USB devices */
-    if (usb_enabled) {
+    if (usb_enabled(false)) {
         if (foreach_device_config(DEV_USB, usb_parse) < 0)
             exit(1);
     }
-- 
1.7.7.6




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