[coreboot] New patch to review for coreboot: aa4428b libpayload: Remove workaround for bitfield management in EHCI driver

[Patrick Georgi]

Patrick Georgi ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/595

-gerrit

commit aa4428b722849dc772004d4d0ab10c035b00cf3c
Author: Patrick Georgi 
Date:   Tue Jan 31 14:48:05 2012 +0100

libpayload: Remove workaround for bitfield management in EHCI driver

We don't use bitfields anymore.

Change-Id: I25ceec2024f659612871bcfe5f98df3a10789055
    Signed-off-by: Patrick Georgi 
---
 payloads/libpayload/drivers/usb/ehci_rh.c |   28 +++++++++++-----------------
 1 files changed, 11 insertions(+), 17 deletions(-)

diff --git a/payloads/libpayload/drivers/usb/ehci_rh.c b/payloads/libpayload/drivers/usb/ehci_rh.c
index 1d41f3f..dd073a3 100644
--- a/payloads/libpayload/drivers/usb/ehci_rh.c
+++ b/payloads/libpayload/drivers/usb/ehci_rh.c
@@ -53,31 +53,28 @@ ehci_rh_destroy (usbdev_t *dev)
 static void
 ehci_rh_hand_over_port (usbdev_t *dev, int port)
 {
-	volatile portsc_t *p = &(RH_INST(dev)->ports[port]);
-
    debug("giving up port %x, it's USB1\n", port+1);

/* Lowspeed device. Hand over to companion */
-	*p |= P_PORT_OWNER;
-	do {} while (!(*p & P_CONN_STATUS_CHANGE));
+	RH_INST(dev)->ports[port] |= P_PORT_OWNER;
+	do {} while (!(RH_INST(dev)->ports[port] & P_CONN_STATUS_CHANGE));
    /* RW/C register, so clear it by writing 1 */
-	*p |= P_CONN_STATUS_CHANGE;
+	RH_INST(dev)->ports[port] |= P_CONN_STATUS_CHANGE;
    return;
 }

static void
 ehci_rh_scanport (usbdev_t *dev, int port)
 {
-	volatile portsc_t *p = &(RH_INST(dev)->ports[port]);
    if (RH_INST(dev)->devices[port]!=-1) {
    	debug("Unregister device at port %x\n", port+1);
    	usb_detach_device(dev->controller, RH_INST(dev)->devices[port]);
    	RH_INST(dev)->devices[port]=-1;
    }
    /* device connected, handle */
-	if (*p & P_CURR_CONN_STATUS) {
+	if (RH_INST(dev)->ports[port] & P_CURR_CONN_STATUS) {
    	mdelay(100);
-		if ((*p & P_LINE_STATUS) == P_LINE_STATUS_LOWSPEED) {
+		if ((RH_INST(dev)->ports[port] & P_LINE_STATUS) == P_LINE_STATUS_LOWSPEED) {
    		ehci_rh_hand_over_port(dev, port);
    		return;
    	}
@@ -85,17 +82,17 @@ ehci_rh_scanport (usbdev_t *dev, int port)
    	/* Deassert enable, assert reset.  These must change
    	 * atomically.
    	 */
-		*p = (*p & ~P_PORT_ENABLE) | P_PORT_RESET;
+		RH_INST(dev)->ports[port] = (RH_INST(dev)->ports[port] & ~P_PORT_ENABLE) | P_PORT_RESET;

/* Wait a bit while reset is active. */
    	mdelay(50);

/* Deassert reset. */
-		*p &= ~P_PORT_RESET;
+		RH_INST(dev)->ports[port] &= ~P_PORT_RESET;

/* Wait for flag change to finish. The controller might take a while */
-		while (*p & P_PORT_RESET) ;
-		if (!(*p & P_PORT_ENABLE)) {
+		while (RH_INST(dev)->ports[port] & P_PORT_RESET) ;
+		if (!(RH_INST(dev)->ports[port] & P_PORT_ENABLE)) {
    		ehci_rh_hand_over_port(dev, port);
    		return;
    	}
@@ -103,7 +100,7 @@ ehci_rh_scanport (usbdev_t *dev, int port)
    	RH_INST(dev)->devices[port] = usb_attach_device(dev->controller, dev->address, port, 2);
    }
    /* RW/C register, so clear it by writing 1 */
-	*p |= P_CONN_STATUS_CHANGE;
+	RH_INST(dev)->ports[port] |= P_CONN_STATUS_CHANGE;
 }

static int
@@ -130,8 +127,6 @@ void
 ehci_rh_init (usbdev_t *dev)
 {
    int i;
-	volatile portsc_t *p;
-
    dev->destroy = ehci_rh_destroy;
    dev->poll = ehci_rh_poll;

@@ -144,9 +139,8 @@ ehci_rh_init (usbdev_t *dev)

RH_INST(dev)->devices = malloc(RH_INST(dev)->n_ports * sizeof(int));
    for (i=0; i < RH_INST(dev)->n_ports; i++) {
-		p = &(RH_INST(dev)->ports[i]);
    	RH_INST(dev)->devices[i] = -1;
-		*p |= P_PP;
+		RH_INST(dev)->ports[i] |= P_PP;
    	ehci_rh_scanport(dev, i);
    }