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[Qemu-devel] [PATCH 08/11] usb-ehci: Fix handling of PED and PEDC port s
From: |
Hans de Goede |
Subject: |
[Qemu-devel] [PATCH 08/11] usb-ehci: Fix handling of PED and PEDC port status bits |
Date: |
Fri, 24 Jun 2011 21:32:55 +0200 |
The PED bit should only be set for highspeed devices and the PEDC bit
should not be set on "normal" PED bit changes, only on io errors.
Signed-off-by: Hans de Goede <address@hidden>
---
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 cfda374..0e8b3d1 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;
--
1.7.5.1
- [Qemu-devel] RFC/PULL: usb: add support for companion controllers, Hans de Goede, 2011/06/24
- [Qemu-devel] [PATCH 01/11] usb: Add a register_companion USB bus op., Hans de Goede, 2011/06/24
- [Qemu-devel] [PATCH 02/11] usb: Make port wakeup and complete ops take a USBPort instead of a Device, Hans de Goede, 2011/06/24
- [Qemu-devel] [PATCH 03/11] usb: Replace device_destroy bus op with a child_detach port op, Hans de Goede, 2011/06/24
- [Qemu-devel] [PATCH 05/11] usb-ehci: Connect Status bit is read only, don't allow changing it by the guest, Hans de Goede, 2011/06/24
- [Qemu-devel] [PATCH 04/11] usb-ehci: drop unused num-ports state member, Hans de Goede, 2011/06/24
- [Qemu-devel] [PATCH 06/11] usb-ehci: cleanup port reset handling, Hans de Goede, 2011/06/24
- [Qemu-devel] [PATCH 07/11] usb: assert on calling usb_attach(port, NULL) on a port without a dev, Hans de Goede, 2011/06/24
- [Qemu-devel] [PATCH 08/11] usb-ehci: Fix handling of PED and PEDC port status bits,
Hans de Goede <=
- [Qemu-devel] [PATCH 09/11] usb-ehci: Add support for registering companion controllers, Hans de Goede, 2011/06/24
- [Qemu-devel] [PATCH 10/11] usb-uhci: Add support for being a companion controller, Hans de Goede, 2011/06/24
[Qemu-devel] [PATCH 11/11] usb-ohci: Add support for being a companion controller, Hans de Goede, 2011/06/24