From 45b991f7d27145deeaabf5cbee5f14d3a0c5dfbd Mon Sep 17 00:00:00 2001 From: Amit Shah Date: Fri, 4 Feb 2011 08:20:36 -0200 Subject: [RHEL6 qemu-kvm PATCH 05/27] char: Add a QemuChrHandlers struct to initialise chardev handlers RH-Author: Amit Shah Message-id: Patchwork-id: 17706 O-Subject: [RHEL6.1 qemu PATCH v5 05/19] char: Add a QemuChrHandlers struct to initialise chardev handlers Bugzilla: 588916 RH-Acked-by: Alon Levy RH-Acked-by: Juan Quintela RH-Acked-by: Jes Sorensen RH-Acked-by: Michael S. Tsirkin Instead of passing each handler in the qemu_add_handlers() function, create a struct of handlers that can be passed to the function instead. Signed-off-by: Amit Shah --- gdbstub.c | 9 +++++++-- hw/escc.c | 9 +++++++-- hw/etraxfs_ser.c | 13 +++++++++---- hw/mcf_uart.c | 9 +++++++-- hw/pl011.c | 9 +++++++-- hw/pxa2xx.c | 13 +++++++++---- hw/serial.c | 9 +++++++-- hw/sh_serial.c | 12 +++++++++--- hw/syborg_serial.c | 9 +++++++-- hw/usb-serial.c | 9 +++++++-- hw/virtio-console.c | 9 +++++++-- hw/xen_console.c | 16 +++++++++++----- hw/xilinx_uartlite.c | 11 +++++++++-- monitor.c | 19 +++++++++++++++---- net/slirp.c | 8 ++++++-- qemu-char.c | 30 +++++++++++++++++++++--------- qemu-char.h | 13 +++++++++---- 17 files changed, 154 insertions(+), 53 deletions(-) Signed-off-by: Eduardo Habkost --- gdbstub.c | 9 +++++++-- hw/escc.c | 9 +++++++-- hw/etraxfs_ser.c | 13 +++++++++---- hw/mcf_uart.c | 9 +++++++-- hw/pl011.c | 9 +++++++-- hw/pxa2xx.c | 13 +++++++++---- hw/serial.c | 9 +++++++-- hw/sh_serial.c | 12 +++++++++--- hw/syborg_serial.c | 9 +++++++-- hw/usb-serial.c | 9 +++++++-- hw/virtio-console.c | 9 +++++++-- hw/xen_console.c | 16 +++++++++++----- hw/xilinx_uartlite.c | 11 +++++++++-- monitor.c | 19 +++++++++++++++---- net/slirp.c | 8 ++++++-- qemu-char.c | 30 +++++++++++++++++++++--------- qemu-char.h | 13 +++++++++---- 17 files changed, 154 insertions(+), 53 deletions(-) diff --git a/gdbstub.c b/gdbstub.c index 0a738bf..81846bc 100644 --- a/gdbstub.c +++ b/gdbstub.c @@ -2552,6 +2552,12 @@ static void gdb_sigterm_handler(int signal) } #endif +static const QemuChrHandlers gdb_handlers = { + .fd_can_read = gdb_chr_can_receive, + .fd_read = gdb_chr_receive, + .fd_event = gdb_chr_event, +}; + int gdbserver_start(const char *device) { GDBState *s; @@ -2581,8 +2587,7 @@ int gdbserver_start(const char *device) if (!chr) return -1; - qemu_chr_add_handlers(chr, gdb_chr_can_receive, gdb_chr_receive, - gdb_chr_event, NULL); + qemu_chr_add_handlers(chr, &gdb_handlers, NULL); } s = gdbserver_state; diff --git a/hw/escc.c b/hw/escc.c index 0b20aea..0cb1d45 100644 --- a/hw/escc.c +++ b/hw/escc.c @@ -890,6 +890,12 @@ void slavio_serial_ms_kbd_init(target_phys_addr_t base, qemu_irq irq, sysbus_mmio_map(s, 0, base); } +static const QemuChrHandlers serial_handlers = { + .fd_can_read = serial_can_receive, + .fd_read = serial_receive1, + .fd_event = serial_event, +}; + static int escc_init1(SysBusDevice *dev) { SerialState *s = FROM_SYSBUS(SerialState, dev); @@ -903,8 +909,7 @@ static int escc_init1(SysBusDevice *dev) s->chn[i].chn = 1 - i; s->chn[i].clock = s->frequency / 2; if (s->chn[i].chr) { - qemu_chr_add_handlers(s->chn[i].chr, serial_can_receive, - serial_receive1, serial_event, &s->chn[i]); + qemu_chr_add_handlers(s->chn[i].chr, &serial_handlers, &s->chn[i]); } } s->chn[0].otherchn = &s->chn[1]; diff --git a/hw/etraxfs_ser.c b/hw/etraxfs_ser.c index e1f9615..0c0c485 100644 --- a/hw/etraxfs_ser.c +++ b/hw/etraxfs_ser.c @@ -161,6 +161,12 @@ static void serial_event(void *opaque, int event) } +static const QemuChrHandlers serial_handlers = { + .fd_can_read = serial_can_receive, + .fd_read = serial_receive, + .fd_event = serial_event, +}; + static int etraxfs_ser_init(SysBusDevice *dev) { struct etrax_serial *s = FROM_SYSBUS(typeof (*s), dev); @@ -174,10 +180,9 @@ static int etraxfs_ser_init(SysBusDevice *dev) ser_regs = cpu_register_io_memory(ser_read, ser_write, s); sysbus_init_mmio(dev, R_MAX * 4, ser_regs); s->chr = qdev_init_chardev(&dev->qdev); - if (s->chr) - qemu_chr_add_handlers(s->chr, - serial_can_receive, serial_receive, - serial_event, s); + if (s->chr) { + qemu_chr_add_handlers(s->chr, &serial_handlers, s); + } return 0; } diff --git a/hw/mcf_uart.c b/hw/mcf_uart.c index d16bac7..d2ce5f6 100644 --- a/hw/mcf_uart.c +++ b/hw/mcf_uart.c @@ -268,6 +268,12 @@ static void mcf_uart_receive(void *opaque, const uint8_t *buf, int size) mcf_uart_push_byte(s, buf[0]); } +static const QemuChrHandlers mcf_uart_handlers = { + .fd_can_read = mcf_uart_can_receive, + .fd_read = mcf_uart_receive, + .fd_event = mcf_uart_event, +}; + void *mcf_uart_init(qemu_irq irq, CharDriverState *chr) { mcf_uart_state *s; @@ -276,8 +282,7 @@ void *mcf_uart_init(qemu_irq irq, CharDriverState *chr) s->chr = chr; s->irq = irq; if (chr) { - qemu_chr_add_handlers(chr, mcf_uart_can_receive, mcf_uart_receive, - mcf_uart_event, s); + qemu_chr_add_handlers(chr, &mcf_uart_handlers, s); } mcf_uart_reset(s); return s; diff --git a/hw/pl011.c b/hw/pl011.c index 02cf84a..339d4ac 100644 --- a/hw/pl011.c +++ b/hw/pl011.c @@ -286,6 +286,12 @@ static int pl011_load(QEMUFile *f, void *opaque, int version_id) return 0; } +static const QemuChrHandlers pl011_handlers = { + .fd_can_read = pl011_can_receive, + .fd_read = pl011_receive, + .fd_event = pl011_event, +}; + static int pl011_init(SysBusDevice *dev, const unsigned char *id) { int iomemtype; @@ -303,8 +309,7 @@ static int pl011_init(SysBusDevice *dev, const unsigned char *id) s->cr = 0x300; s->flags = 0x90; if (s->chr) { - qemu_chr_add_handlers(s->chr, pl011_can_receive, pl011_receive, - pl011_event, s); + qemu_chr_add_handlers(s->chr, &pl011_handlers, s); } register_savevm(&dev->qdev, "pl011_uart", -1, 1, pl011_save, pl011_load, s); return 0; diff --git a/hw/pxa2xx.c b/hw/pxa2xx.c index 8be207a..3973681 100644 --- a/hw/pxa2xx.c +++ b/hw/pxa2xx.c @@ -1992,6 +1992,12 @@ static int pxa2xx_fir_load(QEMUFile *f, void *opaque, int version_id) return 0; } +static const QemuChrHandlers pxa2xx_handlers = { + .fd_can_read = pxa2xx_fir_is_empty, + .fd_read = pxa2xx_fir_rx, + .fd_event = pxa2xx_fir_event, +}; + static PXA2xxFIrState *pxa2xx_fir_init(target_phys_addr_t base, qemu_irq irq, PXA2xxDMAState *dma, CharDriverState *chr) @@ -2010,10 +2016,9 @@ static PXA2xxFIrState *pxa2xx_fir_init(target_phys_addr_t base, pxa2xx_fir_writefn, s); cpu_register_physical_memory(base, 0x1000, iomemtype); - if (chr) - qemu_chr_add_handlers(chr, pxa2xx_fir_is_empty, - pxa2xx_fir_rx, pxa2xx_fir_event, s); - + if (chr) { + qemu_chr_add_handlers(chr, &pxa2xx_handlers, s); + } register_savevm(NULL, "pxa2xx_fir", 0, 0, pxa2xx_fir_save, pxa2xx_fir_load, s); diff --git a/hw/serial.c b/hw/serial.c index 1a7458c..44a2810 100644 --- a/hw/serial.c +++ b/hw/serial.c @@ -712,6 +712,12 @@ static void serial_reset(void *opaque) qemu_irq_lower(s->irq); } +static const QemuChrHandlers serial_handlers = { + .fd_can_read = serial_can_receive1, + .fd_read = serial_receive1, + .fd_event = serial_event, +}; + static void serial_init_core(SerialState *s) { if (!s->chr) { @@ -726,8 +732,7 @@ static void serial_init_core(SerialState *s) qemu_register_reset(serial_reset, s); - qemu_chr_add_handlers(s->chr, serial_can_receive1, serial_receive1, - serial_event, s); + qemu_chr_add_handlers(s->chr, &serial_handlers, s); } /* Change the main reference oscillator frequency. */ diff --git a/hw/sh_serial.c b/hw/sh_serial.c index 2447b91..a66a57a 100644 --- a/hw/sh_serial.c +++ b/hw/sh_serial.c @@ -363,6 +363,12 @@ static CPUWriteMemoryFunc * const sh_serial_writefn[] = { &sh_serial_write, }; +static const QemuChrHandlers sh_serial_handlers = { + .fd_can_read = sh_serial_can_receive1, + .fd_read = sh_serial_receive1, + .fd_event = sh_serial_event, +}; + void sh_serial_init (target_phys_addr_t base, int feat, uint32_t freq, CharDriverState *chr, qemu_irq eri_source, @@ -401,9 +407,9 @@ void sh_serial_init (target_phys_addr_t base, int feat, s->chr = chr; - if (chr) - qemu_chr_add_handlers(chr, sh_serial_can_receive1, sh_serial_receive1, - sh_serial_event, s); + if (chr) { + qemu_chr_add_handlers(chr, &sh_serial_handlers, s); + } s->eri = eri_source; s->rxi = rxi_source; diff --git a/hw/syborg_serial.c b/hw/syborg_serial.c index 8c42956..febcd15 100644 --- a/hw/syborg_serial.c +++ b/hw/syborg_serial.c @@ -315,6 +315,12 @@ static int syborg_serial_load(QEMUFile *f, void *opaque, int version_id) return 0; } +static const QemuChrHandlers syborg_serial_handlers = { + .fd_can_read = syborg_serial_can_receive, + .fd_read = syborg_serial_receive, + .fd_event = syborg_serial_event, +}; + static int syborg_serial_init(SysBusDevice *dev) { SyborgSerialState *s = FROM_SYSBUS(SyborgSerialState, dev); @@ -326,8 +332,7 @@ static int syborg_serial_init(SysBusDevice *dev) sysbus_init_mmio(dev, 0x1000, iomemtype); s->chr = qdev_init_chardev(&dev->qdev); if (s->chr) { - qemu_chr_add_handlers(s->chr, syborg_serial_can_receive, - syborg_serial_receive, syborg_serial_event, s); + qemu_chr_add_handlers(s->chr, &syborg_serial_handlers, s); } if (s->fifo_size <= 0) { fprintf(stderr, "syborg_serial: fifo too small\n"); diff --git a/hw/usb-serial.c b/hw/usb-serial.c index 80d194e..3620251 100644 --- a/hw/usb-serial.c +++ b/hw/usb-serial.c @@ -540,13 +540,18 @@ static void usb_serial_event(void *opaque, int event) } } +static const QemuChrHandlers usb_serial_handlers = { + .fd_can_read = usb_serial_can_read, + .fd_read = usb_serial_read, + .fd_event = usb_serial_event, +}; + static int usb_serial_initfn(USBDevice *dev) { USBSerialState *s = DO_UPCAST(USBSerialState, dev, dev); s->dev.speed = USB_SPEED_FULL; - qemu_chr_add_handlers(s->cs, usb_serial_can_read, usb_serial_read, - usb_serial_event, s); + qemu_chr_add_handlers(s->cs, &usb_serial_handlers, s); usb_serial_handle_reset(dev); return 0; } diff --git a/hw/virtio-console.c b/hw/virtio-console.c index d0b9354..1bb6f8e 100644 --- a/hw/virtio-console.c +++ b/hw/virtio-console.c @@ -57,13 +57,18 @@ static void chr_event(void *opaque, int event) } } +static const QemuChrHandlers chr_handlers = { + .fd_can_read = chr_can_read, + .fd_read = chr_read, + .fd_event = chr_event, +}; + static int generic_port_init(VirtConsole *vcon, VirtIOSerialDevice *dev) { vcon->port.info = dev->info; if (vcon->chr) { - qemu_chr_add_handlers(vcon->chr, chr_can_read, chr_read, chr_event, - vcon); + qemu_chr_add_handlers(vcon->chr, &chr_handlers, vcon); vcon->port.info->have_data = flush_buf; } return 0; diff --git a/hw/xen_console.c b/hw/xen_console.c index d2261f4..8327e4e 100644 --- a/hw/xen_console.c +++ b/hw/xen_console.c @@ -202,6 +202,11 @@ static int con_init(struct XenDevice *xendev) return 0; } +static const QemuChrHandlers xencons_handlers = { + .fd_can_read = xencons_can_receive, + .fd_read = xencons_receive, +}; + static int con_connect(struct XenDevice *xendev) { struct XenConsole *con = container_of(xendev, struct XenConsole, xendev); @@ -222,9 +227,9 @@ static int con_connect(struct XenDevice *xendev) return -1; xen_be_bind_evtchn(&con->xendev); - if (con->chr) - qemu_chr_add_handlers(con->chr, xencons_can_receive, xencons_receive, - NULL, con); + if (con->chr) { + qemu_chr_add_handlers(con->chr, &xencons_handlers, con); + } xen_be_printf(xendev, 1, "ring mfn %d, remote port %d, local port %d, limit %zd\n", con->ring_ref, @@ -238,8 +243,9 @@ static void con_disconnect(struct XenDevice *xendev) { struct XenConsole *con = container_of(xendev, struct XenConsole, xendev); - if (con->chr) - qemu_chr_add_handlers(con->chr, NULL, NULL, NULL, NULL); + if (con->chr) { + qemu_chr_add_handlers(con->chr, NULL, NULL); + } xen_be_unbind_evtchn(&con->xendev); if (con->sring) { diff --git a/hw/xilinx_uartlite.c b/hw/xilinx_uartlite.c index adab759..66f0396 100644 --- a/hw/xilinx_uartlite.c +++ b/hw/xilinx_uartlite.c @@ -193,6 +193,12 @@ static void uart_event(void *opaque, int event) } +static const QemuChrHandlers uart_handlers = { + .fd_can_read = uart_can_rx, + .fd_read = uart_rx, + .fd_event = uart_event, +}; + static int xilinx_uartlite_init(SysBusDevice *dev) { struct xlx_uartlite *s = FROM_SYSBUS(typeof (*s), dev); @@ -205,8 +211,9 @@ static int xilinx_uartlite_init(SysBusDevice *dev) sysbus_init_mmio(dev, R_MAX * 4, uart_regs); s->chr = qdev_init_chardev(&dev->qdev); - if (s->chr) - qemu_chr_add_handlers(s->chr, uart_can_rx, uart_rx, uart_event, s); + if (s->chr) { + qemu_chr_add_handlers(s->chr, &uart_handlers, s); + } return 0; } diff --git a/monitor.c b/monitor.c index afed4bc..796d745 100644 --- a/monitor.c +++ b/monitor.c @@ -5026,6 +5026,18 @@ static void monitor_event(void *opaque, int event) * End: */ +static const QemuChrHandlers monitor_handlers = { + .fd_can_read = monitor_can_read, + .fd_read = monitor_read, + .fd_event = monitor_event, +}; + +static const QemuChrHandlers monitor_control_handlers = { + .fd_can_read = monitor_can_read, + .fd_read = monitor_control_read, + .fd_event = monitor_control_event, +}; + void monitor_init(CharDriverState *chr, int flags) { static int is_first_init = 1; @@ -5047,12 +5059,11 @@ void monitor_init(CharDriverState *chr, int flags) if (monitor_ctrl_mode(mon)) { mon->mc = qemu_mallocz(sizeof(MonitorControl)); + /* Control mode requires special handlers */ - qemu_chr_add_handlers(chr, monitor_can_read, monitor_control_read, - monitor_control_event, mon); + qemu_chr_add_handlers(chr, &monitor_control_handlers, mon); } else { - qemu_chr_add_handlers(chr, monitor_can_read, monitor_read, - monitor_event, mon); + qemu_chr_add_handlers(chr, &monitor_handlers, mon); } QLIST_INSERT_HEAD(&mon_list, mon, entry); diff --git a/net/slirp.c b/net/slirp.c index 480e6ae..dbc29c8 100644 --- a/net/slirp.c +++ b/net/slirp.c @@ -574,6 +574,11 @@ static void guestfwd_read(void *opaque, const uint8_t *buf, int size) slirp_socket_recv(fwd->slirp, fwd->server, fwd->port, buf, size); } +static const QemuChrHandlers guestfwd_handlers = { + .fd_can_read = guestfwd_can_read, + .fd_read = guestfwd_read, +}; + static int slirp_guestfwd(SlirpState *s, const char *config_str, int legacy_format) { @@ -630,8 +635,7 @@ static int slirp_guestfwd(SlirpState *s, const char *config_str, fwd->port = port; fwd->slirp = s->slirp; - qemu_chr_add_handlers(fwd->hd, guestfwd_can_read, guestfwd_read, - NULL, fwd); + qemu_chr_add_handlers(fwd->hd, &guestfwd_handlers, fwd); return 0; fail_syntax: diff --git a/qemu-char.c b/qemu-char.c index 9af279f..08ef24b 100644 --- a/qemu-char.c +++ b/qemu-char.c @@ -182,15 +182,22 @@ void qemu_chr_send_event(CharDriverState *s, int event) s->chr_send_event(s, event); } +static const QemuChrHandlers null_handlers = { + /* All handlers are initialised to NULL */ +}; + void qemu_chr_add_handlers(CharDriverState *s, - IOCanRWHandler *fd_can_read, - IOReadHandler *fd_read, - IOEventHandler *fd_event, - void *opaque) -{ - s->chr_can_read = fd_can_read; - s->chr_read = fd_read; - s->chr_event = fd_event; + const QemuChrHandlers *handlers, void *opaque) +{ + if (!s) { + return; + } + if (!handlers) { + handlers = &null_handlers; + } + s->chr_can_read = handlers->fd_can_read; + s->chr_read = handlers->fd_read; + s->chr_event = handlers->fd_event; s->handler_opaque = opaque; if (s->chr_update_read_handler) s->chr_update_read_handler(s); @@ -427,6 +434,12 @@ static void mux_chr_event(void *opaque, int event) mux_chr_send_event(d, i, event); } +static const QemuChrHandlers mux_chr_handlers = { + .fd_can_read = mux_chr_can_read, + .fd_read = mux_chr_read, + .fd_event = mux_chr_event, +}; + static void mux_chr_update_read_handler(CharDriverState *chr) { MuxDriver *d = chr->opaque; @@ -441,8 +454,7 @@ static void mux_chr_update_read_handler(CharDriverState *chr) d->chr_event[d->mux_cnt] = chr->chr_event; /* Fix up the real driver with mux routines */ if (d->mux_cnt == 0) { - qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read, - mux_chr_event, chr); + qemu_chr_add_handlers(d->drv, &mux_chr_handlers, chr); } if (d->focus != -1) { mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT); diff --git a/qemu-char.h b/qemu-char.h index d04611a..8d2e3ba 100644 --- a/qemu-char.h +++ b/qemu-char.h @@ -1,6 +1,7 @@ #ifndef QEMU_CHAR_H #define QEMU_CHAR_H +#include #include "qemu-common.h" #include "qemu-queue.h" #include "qemu-option.h" @@ -71,6 +72,13 @@ struct CharDriverState { QTAILQ_ENTRY(CharDriverState) next; }; +typedef struct QemuChrHandlers { + IOCanRWHandler *fd_can_read; + IOReadHandler *fd_read; + IOHandler *fd_write_unblocked; + IOEventHandler *fd_event; +} QemuChrHandlers; + QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename); CharDriverState *qemu_chr_open_opts(QemuOpts *opts, void (*init)(struct CharDriverState *s)); @@ -79,10 +87,7 @@ void qemu_chr_close(CharDriverState *chr); void qemu_chr_printf(CharDriverState *s, const char *fmt, ...); int qemu_chr_write(CharDriverState *s, const uint8_t *buf, int len); void qemu_chr_send_event(CharDriverState *s, int event); -void qemu_chr_add_handlers(CharDriverState *s, - IOCanRWHandler *fd_can_read, - IOReadHandler *fd_read, - IOEventHandler *fd_event, +void qemu_chr_add_handlers(CharDriverState *s, const QemuChrHandlers *handlers, void *opaque); int qemu_chr_ioctl(CharDriverState *s, int cmd, void *arg); void qemu_chr_generic_open(CharDriverState *s); -- 1.7.3.2