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xhci: add {get,set}_field macros & enum for pls 

Add {get,set}_field macros (simliar to ehci) to read and update
some bits of a word.  Put them into use for updating pls (port
link state) values.  Also add a enum for pls values.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
master
Gerd Hoffmann 2012-10-26 10:10:54 +02:00
parent 286d52ebfc
commit 85e05d825f
1 changed files with 31 additions and 8 deletions
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39
hw/usb/hcd-xhci.c
View File

@ -146,6 +146,21 @@ typedef struct XHCITRB {
bool ccs;
} XHCITRB;
enum {
PLS_U0 = 0,
PLS_U1 = 1,
PLS_U2 = 2,
PLS_U3 = 3,
PLS_DISABLED = 4,
PLS_RX_DETECT = 5,
PLS_INACTIVE = 6,
PLS_POLLING = 7,
PLS_RECOVERY = 8,
PLS_HOT_RESET = 9,
PLS_COMPILANCE_MODE = 10,
PLS_TEST_MODE = 11,
PLS_RESUME = 15,
};
typedef enum TRBType {
TRB_RESERVED = 0,
@ -287,6 +302,16 @@ typedef enum TRBCCode {
typedef struct XHCIState XHCIState;
#define get_field(data, field) \
(((data) >> field##_SHIFT) & field##_MASK)
#define set_field(data, newval, field) do { \
uint32_t val = *data; \
val &= ~(field##_MASK << field##_SHIFT); \
val |= ((newval) & field##_MASK) << field##_SHIFT; \
*data = val; \
} while (0)
typedef enum EPType {
ET_INVALID = 0,
ET_ISO_OUT,
@ -2334,7 +2359,7 @@ static void xhci_update_port(XHCIState *xhci, XHCIPort *port, int is_detach)
}
}
if (xhci_running(xhci)) {
if (xhci_running(port->xhci)) {
port->portsc |= PORTSC_CSC;
XHCIEvent ev = { ER_PORT_STATUS_CHANGE, CC_SUCCESS,
port->portnr << 24};
@ -2368,7 +2393,7 @@ static void xhci_reset(DeviceState *dev)
}
for (i = 0; i < xhci->numports; i++) {
xhci_update_port(xhci, xhci->ports + i, 0);
xhci_update_port(xhci->ports + i, 0);
}
for (i = 0; i < xhci->numintrs; i++) {
@ -2499,8 +2524,8 @@ static void xhci_port_write(void *ptr, hwaddr reg,
PORTSC_PRC|PORTSC_PLC|PORTSC_CEC));
if (val & PORTSC_LWS) {
/* overwrite PLS only when LWS=1 */
portsc &= ~(PORTSC_PLS_MASK << PORTSC_PLS_SHIFT);
portsc |= val & (PORTSC_PLS_MASK << PORTSC_PLS_SHIFT);
uint32_t pls = get_field(val, PORTSC_PLS);
set_field(&portsc, pls, PORTSC_PLS);
}
/* read/write bits */
portsc &= ~(PORTSC_PP|PORTSC_WCE|PORTSC_WDE|PORTSC_WOE);
@ -2832,13 +2857,11 @@ static void xhci_wakeup(USBPort *usbport)
XHCIPort *port = xhci_lookup_port(xhci, usbport);
XHCIEvent ev = { ER_PORT_STATUS_CHANGE, CC_SUCCESS,
port->portnr << 24};
uint32_t pls;
pls = (port->portsc >> PORTSC_PLS_SHIFT) & PORTSC_PLS_MASK;
if (pls != 3) {
if (get_field(port->portsc, PORTSC_PLS) != PLS_U3) {
return;
}
port->portsc |= 0xf << PORTSC_PLS_SHIFT;
set_field(&port->portsc, PLS_RESUME, PORTSC_PLS);
if (port->portsc & PORTSC_PLC) {
return;
}