diff options
Diffstat (limited to 'hw/usb-ehci.c')
| -rw-r--r-- | hw/usb-ehci.c | 24 |
1 files changed, 11 insertions, 13 deletions
diff --git a/hw/usb-ehci.c b/hw/usb-ehci.c index d85e0a9851..973c34292e 100644 --- a/hw/usb-ehci.c +++ b/hw/usb-ehci.c @@ -106,7 +106,7 @@ * Bits that are reserved or are read-only are masked out of values * written to us by software */ -#define PORTSC_RO_MASK 0x007021c4 +#define PORTSC_RO_MASK 0x007021c0 #define PORTSC_RWC_MASK 0x0000002a #define PORTSC_WKOC_E (1 << 22) // Wake on Over Current Enable #define PORTSC_WKDS_E (1 << 21) // Wake on Disconnect Enable @@ -752,7 +752,7 @@ static void ehci_detach(USBPort *port) ehci_queues_rip_device(s, port->dev); - *portsc &= ~PORTSC_CONNECT; + *portsc &= ~(PORTSC_CONNECT|PORTSC_PED); *portsc |= PORTSC_CSC; /* @@ -847,16 +847,14 @@ static void ehci_mem_writew(void *ptr, target_phys_addr_t addr, uint32_t val) static void handle_port_status_write(EHCIState *s, int port, uint32_t val) { uint32_t *portsc = &s->portsc[port]; - int rwc; USBDevice *dev = s->ports[port].dev; - rwc = val & PORTSC_RWC_MASK; + /* Clear rwc bits */ + *portsc &= ~(val & PORTSC_RWC_MASK); + /* The guest may clear, but not set the PED bit */ + *portsc &= val | ~PORTSC_PED; val &= PORTSC_RO_MASK; - // handle_read_write_clear(&val, portsc, PORTSC_PEDC | PORTSC_CSC); - - *portsc &= ~rwc; - if ((val & PORTSC_PRESET) && !(*portsc & PORTSC_PRESET)) { trace_usb_ehci_port_reset(port, 1); } @@ -869,13 +867,13 @@ static void handle_port_status_write(EHCIState *s, int port, uint32_t val) *portsc &= ~PORTSC_CSC; } - /* Table 2.16 Set the enable bit(and enable bit change) to indicate + /* + * Table 2.16 Set the enable bit(and enable bit change) to indicate * to SW that this port has a high speed device attached - * - * TODO - when to disable? */ - val |= PORTSC_PED; - val |= PORTSC_PEDC; + if (dev && (dev->speedmask & USB_SPEED_MASK_HIGH)) { + val |= PORTSC_PED; + } } *portsc &= ~PORTSC_RO_MASK; |