From 618c169b577db64ac6589ad48825d2e11760d1a6 Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Wed, 1 Dec 2010 11:27:05 +0100 Subject: usb: rework attach/detach workflow Add separate detach callback to USBPortOps, split uhci/ohci/musb/usbhub attach functions into two. Move common code to the usb_attach() function, only the hardware-specific bits remain in the attach/detach callbacks. Keep track of the port it is attached to for each usb device. [ v3: fix tyops in usb-musb.c ] Signed-off-by: Gerd Hoffmann --- hw/usb-hub.c | 46 +++++++++++++++------------------- hw/usb-musb.c | 36 +++++++++------------------ hw/usb-ohci.c | 80 ++++++++++++++++++++++++++++------------------------------- hw/usb-uhci.c | 69 ++++++++++++++++++++++----------------------------- hw/usb.c | 20 ++++++++++++++- hw/usb.h | 4 ++- 6 files changed, 122 insertions(+), 133 deletions(-) (limited to 'hw') diff --git a/hw/usb-hub.c b/hw/usb-hub.c index b3d72987f3..8837bd9efe 100644 --- a/hw/usb-hub.c +++ b/hw/usb-hub.c @@ -218,37 +218,30 @@ static const uint8_t qemu_hub_hub_descriptor[] = /* DeviceRemovable and PortPwrCtrlMask patched in later */ }; -static void usb_hub_attach(USBPort *port1, USBDevice *dev) +static void usb_hub_attach(USBPort *port1) { USBHubState *s = port1->opaque; USBHubPort *port = &s->ports[port1->index]; - if (dev) { - if (port->port.dev) - usb_attach(port1, NULL); - - port->wPortStatus |= PORT_STAT_CONNECTION; - port->wPortChange |= PORT_STAT_C_CONNECTION; - if (dev->speed == USB_SPEED_LOW) - port->wPortStatus |= PORT_STAT_LOW_SPEED; - else - port->wPortStatus &= ~PORT_STAT_LOW_SPEED; - port->port.dev = dev; - /* send the attach message */ - usb_send_msg(dev, USB_MSG_ATTACH); + port->wPortStatus |= PORT_STAT_CONNECTION; + port->wPortChange |= PORT_STAT_C_CONNECTION; + if (port->port.dev->speed == USB_SPEED_LOW) { + port->wPortStatus |= PORT_STAT_LOW_SPEED; } else { - dev = port->port.dev; - if (dev) { - port->wPortStatus &= ~PORT_STAT_CONNECTION; - port->wPortChange |= PORT_STAT_C_CONNECTION; - if (port->wPortStatus & PORT_STAT_ENABLE) { - port->wPortStatus &= ~PORT_STAT_ENABLE; - port->wPortChange |= PORT_STAT_C_ENABLE; - } - /* send the detach message */ - usb_send_msg(dev, USB_MSG_DETACH); - port->port.dev = NULL; - } + port->wPortStatus &= ~PORT_STAT_LOW_SPEED; + } +} + +static void usb_hub_detach(USBPort *port1) +{ + USBHubState *s = port1->opaque; + USBHubPort *port = &s->ports[port1->index]; + + port->wPortStatus &= ~PORT_STAT_CONNECTION; + port->wPortChange |= PORT_STAT_C_CONNECTION; + if (port->wPortStatus & PORT_STAT_ENABLE) { + port->wPortStatus &= ~PORT_STAT_ENABLE; + port->wPortChange |= PORT_STAT_C_ENABLE; } } @@ -508,6 +501,7 @@ static void usb_hub_handle_destroy(USBDevice *dev) static USBPortOps usb_hub_port_ops = { .attach = usb_hub_attach, + .detach = usb_hub_detach, }; static int usb_hub_initfn(USBDevice *dev) diff --git a/hw/usb-musb.c b/hw/usb-musb.c index 592d3e67f4..233a2657c0 100644 --- a/hw/usb-musb.c +++ b/hw/usb-musb.c @@ -259,10 +259,12 @@ #endif -static void musb_attach(USBPort *port, USBDevice *dev); +static void musb_attach(USBPort *port); +static void musb_detach(USBPort *port); static USBPortOps musb_port_ops = { .attach = musb_attach, + .detach = musb_detach, }; typedef struct { @@ -464,34 +466,20 @@ static void musb_session_update(MUSBState *s, int prev_dev, int prev_sess) } /* Attach or detach a device on our only port. */ -static void musb_attach(USBPort *port, USBDevice *dev) +static void musb_attach(USBPort *port) { MUSBState *s = (MUSBState *) port->opaque; - USBDevice *curr; - port = &s->port; - curr = port->dev; - - if (dev) { - if (curr) { - usb_attach(port, NULL); - /* TODO: signal some interrupts */ - } - - musb_intr_set(s, musb_irq_vbus_request, 1); - - /* Send the attach message to device */ - usb_send_msg(dev, USB_MSG_ATTACH); - } else if (curr) { - /* Send the detach message */ - usb_send_msg(curr, USB_MSG_DETACH); - - musb_intr_set(s, musb_irq_disconnect, 1); - } + musb_intr_set(s, musb_irq_vbus_request, 1); + musb_session_update(s, 0, s->session); +} - port->dev = dev; +static void musb_detach(USBPort *port) +{ + MUSBState *s = (MUSBState *) port->opaque; - musb_session_update(s, !!curr, s->session); + musb_intr_set(s, musb_irq_disconnect, 1); + musb_session_update(s, 1, s->session); } static inline void musb_cb_tick0(void *opaque) diff --git a/hw/usb-ohci.c b/hw/usb-ohci.c index 7b13bdd0d3..c859540c19 100644 --- a/hw/usb-ohci.c +++ b/hw/usb-ohci.c @@ -322,52 +322,46 @@ static inline void ohci_set_interrupt(OHCIState *ohci, uint32_t intr) } /* Attach or detach a device on a root hub port. */ -static void ohci_attach(USBPort *port1, USBDevice *dev) +static void ohci_attach(USBPort *port1) { OHCIState *s = port1->opaque; OHCIPort *port = &s->rhport[port1->index]; - uint32_t old_state = port->ctrl; - if (dev) { - if (port->port.dev) { - usb_attach(port1, NULL); - } - /* set connect status */ - port->ctrl |= OHCI_PORT_CCS | OHCI_PORT_CSC; - - /* update speed */ - if (dev->speed == USB_SPEED_LOW) - port->ctrl |= OHCI_PORT_LSDA; - else - port->ctrl &= ~OHCI_PORT_LSDA; - port->port.dev = dev; - - /* notify of remote-wakeup */ - if ((s->ctl & OHCI_CTL_HCFS) == OHCI_USB_SUSPEND) - ohci_set_interrupt(s, OHCI_INTR_RD); - - /* send the attach message */ - usb_send_msg(dev, USB_MSG_ATTACH); - DPRINTF("usb-ohci: Attached port %d\n", port1->index); + /* set connect status */ + port->ctrl |= OHCI_PORT_CCS | OHCI_PORT_CSC; + + /* update speed */ + if (port->port.dev->speed == USB_SPEED_LOW) { + port->ctrl |= OHCI_PORT_LSDA; } else { - /* set connect status */ - if (port->ctrl & OHCI_PORT_CCS) { - port->ctrl &= ~OHCI_PORT_CCS; - port->ctrl |= OHCI_PORT_CSC; - } - /* disable port */ - if (port->ctrl & OHCI_PORT_PES) { - port->ctrl &= ~OHCI_PORT_PES; - port->ctrl |= OHCI_PORT_PESC; - } - dev = port->port.dev; - if (dev) { - /* send the detach message */ - usb_send_msg(dev, USB_MSG_DETACH); - } - port->port.dev = NULL; - DPRINTF("usb-ohci: Detached port %d\n", port1->index); + port->ctrl &= ~OHCI_PORT_LSDA; + } + + /* notify of remote-wakeup */ + if ((s->ctl & OHCI_CTL_HCFS) == OHCI_USB_SUSPEND) { + ohci_set_interrupt(s, OHCI_INTR_RD); + } + + DPRINTF("usb-ohci: Attached port %d\n", port1->index); +} + +static void ohci_detach(USBPort *port1) +{ + OHCIState *s = port1->opaque; + OHCIPort *port = &s->rhport[port1->index]; + uint32_t old_state = port->ctrl; + + /* set connect status */ + if (port->ctrl & OHCI_PORT_CCS) { + port->ctrl &= ~OHCI_PORT_CCS; + port->ctrl |= OHCI_PORT_CSC; + } + /* disable port */ + if (port->ctrl & OHCI_PORT_PES) { + port->ctrl &= ~OHCI_PORT_PES; + port->ctrl |= OHCI_PORT_PESC; } + DPRINTF("usb-ohci: Detached port %d\n", port1->index); if (old_state != port->ctrl) ohci_set_interrupt(s, OHCI_INTR_RHSC); @@ -413,8 +407,9 @@ static void ohci_reset(void *opaque) { port = &ohci->rhport[i]; port->ctrl = 0; - if (port->port.dev) - ohci_attach(&port->port, port->port.dev); + if (port->port.dev) { + usb_attach(&port->port, port->port.dev); + } } if (ohci->async_td) { usb_cancel_packet(&ohci->usb_packet); @@ -1671,6 +1666,7 @@ static CPUWriteMemoryFunc * const ohci_writefn[3]={ static USBPortOps ohci_port_ops = { .attach = ohci_attach, + .detach = ohci_detach, }; static void usb_ohci_init(OHCIState *ohci, DeviceState *dev, diff --git a/hw/usb-uhci.c b/hw/usb-uhci.c index 0f9ef1edc3..5e2e34a51c 100644 --- a/hw/usb-uhci.c +++ b/hw/usb-uhci.c @@ -307,8 +307,6 @@ static UHCIAsync *uhci_async_find_td(UHCIState *s, uint32_t addr, uint32_t token return match; } -static void uhci_attach(USBPort *port1, USBDevice *dev); - static void uhci_update_irq(UHCIState *s) { int level; @@ -348,8 +346,9 @@ static void uhci_reset(void *opaque) for(i = 0; i < NB_PORTS; i++) { port = &s->ports[i]; port->ctrl = 0x0080; - if (port->port.dev) - uhci_attach(&port->port, port->port.dev); + if (port->port.dev) { + usb_attach(&port->port, port->port.dev); + } } uhci_async_cancel_all(s); @@ -593,50 +592,41 @@ static void uhci_resume (void *opaque) } } -static void uhci_attach(USBPort *port1, USBDevice *dev) +static void uhci_attach(USBPort *port1) { UHCIState *s = port1->opaque; UHCIPort *port = &s->ports[port1->index]; - if (dev) { - if (port->port.dev) { - usb_attach(port1, NULL); - } - /* set connect status */ - port->ctrl |= UHCI_PORT_CCS | UHCI_PORT_CSC; + /* set connect status */ + port->ctrl |= UHCI_PORT_CCS | UHCI_PORT_CSC; - /* update speed */ - if (dev->speed == USB_SPEED_LOW) - port->ctrl |= UHCI_PORT_LSDA; - else - port->ctrl &= ~UHCI_PORT_LSDA; - - uhci_resume(s); - - port->port.dev = dev; - /* send the attach message */ - usb_send_msg(dev, USB_MSG_ATTACH); + /* update speed */ + if (port->port.dev->speed == USB_SPEED_LOW) { + port->ctrl |= UHCI_PORT_LSDA; } else { - /* set connect status */ - if (port->ctrl & UHCI_PORT_CCS) { - port->ctrl &= ~UHCI_PORT_CCS; - port->ctrl |= UHCI_PORT_CSC; - } - /* disable port */ - if (port->ctrl & UHCI_PORT_EN) { - port->ctrl &= ~UHCI_PORT_EN; - port->ctrl |= UHCI_PORT_ENC; - } + port->ctrl &= ~UHCI_PORT_LSDA; + } - uhci_resume(s); + uhci_resume(s); +} - dev = port->port.dev; - if (dev) { - /* send the detach message */ - usb_send_msg(dev, USB_MSG_DETACH); - } - port->port.dev = NULL; +static void uhci_detach(USBPort *port1) +{ + UHCIState *s = port1->opaque; + UHCIPort *port = &s->ports[port1->index]; + + /* set connect status */ + if (port->ctrl & UHCI_PORT_CCS) { + port->ctrl &= ~UHCI_PORT_CCS; + port->ctrl |= UHCI_PORT_CSC; } + /* disable port */ + if (port->ctrl & UHCI_PORT_EN) { + port->ctrl &= ~UHCI_PORT_EN; + port->ctrl |= UHCI_PORT_ENC; + } + + uhci_resume(s); } static int uhci_broadcast_packet(UHCIState *s, USBPacket *p) @@ -1103,6 +1093,7 @@ static void uhci_map(PCIDevice *pci_dev, int region_num, static USBPortOps uhci_port_ops = { .attach = uhci_attach, + .detach = uhci_detach, }; static int usb_uhci_common_initfn(UHCIState *s) diff --git a/hw/usb.c b/hw/usb.c index 39d29f3daf..2eda86a58c 100644 --- a/hw/usb.c +++ b/hw/usb.c @@ -28,7 +28,25 @@ void usb_attach(USBPort *port, USBDevice *dev) { - port->ops->attach(port, dev); + if (dev != NULL) { + /* attach */ + if (port->dev) { + usb_attach(port, NULL); + } + dev->port = port; + port->dev = dev; + port->ops->attach(port); + usb_send_msg(dev, USB_MSG_ATTACH); + } else { + /* detach */ + dev = port->dev; + port->ops->detach(port); + if (dev) { + usb_send_msg(dev, USB_MSG_DETACH); + dev->port = NULL; + port->dev = NULL; + } + } } /**********************/ diff --git a/hw/usb.h b/hw/usb.h index 218788fceb..3744d19be3 100644 --- a/hw/usb.h +++ b/hw/usb.h @@ -147,6 +147,7 @@ struct USBDescString { struct USBDevice { DeviceState qdev; USBDeviceInfo *info; + USBPort *port; void *opaque; int speed; @@ -217,7 +218,8 @@ struct USBDeviceInfo { }; typedef struct USBPortOps { - void (*attach)(USBPort *port, USBDevice *dev); + void (*attach)(USBPort *port); + void (*detach)(USBPort *port); } USBPortOps; /* USB port on which a device can be connected */ -- cgit v1.2.3