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path: root/drivers/usb/host/xhci-hub.c
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Diffstat (limited to 'drivers/usb/host/xhci-hub.c')
-rw-r--r--drivers/usb/host/xhci-hub.c392
1 files changed, 272 insertions, 120 deletions
diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
index 5d963e35049..a78f2ebd11b 100644
--- a/drivers/usb/host/xhci-hub.c
+++ b/drivers/usb/host/xhci-hub.c
@@ -28,27 +28,15 @@
#define PORT_RWC_BITS (PORT_CSC | PORT_PEC | PORT_WRC | PORT_OCC | \
PORT_RC | PORT_PLC | PORT_PE)
-static void xhci_hub_descriptor(struct xhci_hcd *xhci,
- struct usb_hub_descriptor *desc)
+static void xhci_common_hub_descriptor(struct xhci_hcd *xhci,
+ struct usb_hub_descriptor *desc, int ports)
{
- int ports;
u16 temp;
- ports = HCS_MAX_PORTS(xhci->hcs_params1);
-
- /* USB 3.0 hubs have a different descriptor, but we fake this for now */
- desc->bDescriptorType = 0x29;
desc->bPwrOn2PwrGood = 10; /* xhci section 5.4.9 says 20ms max */
desc->bHubContrCurrent = 0;
desc->bNbrPorts = ports;
- temp = 1 + (ports / 8);
- desc->bDescLength = 7 + 2 * temp;
-
- /* Why does core/hcd.h define bitmap? It's just confusing. */
- memset(&desc->DeviceRemovable[0], 0, temp);
- memset(&desc->DeviceRemovable[temp], 0xff, temp);
-
/* Ugh, these should be #defines, FIXME */
/* Using table 11-13 in USB 2.0 spec. */
temp = 0;
@@ -65,14 +53,108 @@ static void xhci_hub_descriptor(struct xhci_hcd *xhci,
desc->wHubCharacteristics = (__force __u16) cpu_to_le16(temp);
}
+/* Fill in the USB 2.0 roothub descriptor */
+static void xhci_usb2_hub_descriptor(struct usb_hcd *hcd, struct xhci_hcd *xhci,
+ struct usb_hub_descriptor *desc)
+{
+ int ports;
+ u16 temp;
+ __u8 port_removable[(USB_MAXCHILDREN + 1 + 7) / 8];
+ u32 portsc;
+ unsigned int i;
+
+ ports = xhci->num_usb2_ports;
+
+ xhci_common_hub_descriptor(xhci, desc, ports);
+ desc->bDescriptorType = 0x29;
+ temp = 1 + (ports / 8);
+ desc->bDescLength = 7 + 2 * temp;
+
+ /* The Device Removable bits are reported on a byte granularity.
+ * If the port doesn't exist within that byte, the bit is set to 0.
+ */
+ memset(port_removable, 0, sizeof(port_removable));
+ for (i = 0; i < ports; i++) {
+ portsc = xhci_readl(xhci, xhci->usb3_ports[i]);
+ /* If a device is removable, PORTSC reports a 0, same as in the
+ * hub descriptor DeviceRemovable bits.
+ */
+ if (portsc & PORT_DEV_REMOVE)
+ /* This math is hairy because bit 0 of DeviceRemovable
+ * is reserved, and bit 1 is for port 1, etc.
+ */
+ port_removable[(i + 1) / 8] |= 1 << ((i + 1) % 8);
+ }
+
+ /* ch11.h defines a hub descriptor that has room for USB_MAXCHILDREN
+ * ports on it. The USB 2.0 specification says that there are two
+ * variable length fields at the end of the hub descriptor:
+ * DeviceRemovable and PortPwrCtrlMask. But since we can have less than
+ * USB_MAXCHILDREN ports, we may need to use the DeviceRemovable array
+ * to set PortPwrCtrlMask bits. PortPwrCtrlMask must always be set to
+ * 0xFF, so we initialize the both arrays (DeviceRemovable and
+ * PortPwrCtrlMask) to 0xFF. Then we set the DeviceRemovable for each
+ * set of ports that actually exist.
+ */
+ memset(desc->u.hs.DeviceRemovable, 0xff,
+ sizeof(desc->u.hs.DeviceRemovable));
+ memset(desc->u.hs.PortPwrCtrlMask, 0xff,
+ sizeof(desc->u.hs.PortPwrCtrlMask));
+
+ for (i = 0; i < (ports + 1 + 7) / 8; i++)
+ memset(&desc->u.hs.DeviceRemovable[i], port_removable[i],
+ sizeof(__u8));
+}
+
+/* Fill in the USB 3.0 roothub descriptor */
+static void xhci_usb3_hub_descriptor(struct usb_hcd *hcd, struct xhci_hcd *xhci,
+ struct usb_hub_descriptor *desc)
+{
+ int ports;
+ u16 port_removable;
+ u32 portsc;
+ unsigned int i;
+
+ ports = xhci->num_usb3_ports;
+ xhci_common_hub_descriptor(xhci, desc, ports);
+ desc->bDescriptorType = 0x2a;
+ desc->bDescLength = 12;
+
+ /* header decode latency should be zero for roothubs,
+ * see section 4.23.5.2.
+ */
+ desc->u.ss.bHubHdrDecLat = 0;
+ desc->u.ss.wHubDelay = 0;
+
+ port_removable = 0;
+ /* bit 0 is reserved, bit 1 is for port 1, etc. */
+ for (i = 0; i < ports; i++) {
+ portsc = xhci_readl(xhci, xhci->usb3_ports[i]);
+ if (portsc & PORT_DEV_REMOVE)
+ port_removable |= 1 << (i + 1);
+ }
+ memset(&desc->u.ss.DeviceRemovable,
+ (__force __u16) cpu_to_le16(port_removable),
+ sizeof(__u16));
+}
+
+static void xhci_hub_descriptor(struct usb_hcd *hcd, struct xhci_hcd *xhci,
+ struct usb_hub_descriptor *desc)
+{
+
+ if (hcd->speed == HCD_USB3)
+ xhci_usb3_hub_descriptor(hcd, xhci, desc);
+ else
+ xhci_usb2_hub_descriptor(hcd, xhci, desc);
+
+}
+
static unsigned int xhci_port_speed(unsigned int port_status)
{
if (DEV_LOWSPEED(port_status))
return USB_PORT_STAT_LOW_SPEED;
if (DEV_HIGHSPEED(port_status))
return USB_PORT_STAT_HIGH_SPEED;
- if (DEV_SUPERSPEED(port_status))
- return USB_PORT_STAT_SUPER_SPEED;
/*
* FIXME: Yes, we should check for full speed, but the core uses that as
* a default in portspeed() in usb/core/hub.c (which is the only place
@@ -135,17 +217,22 @@ u32 xhci_port_state_to_neutral(u32 state)
/*
* find slot id based on port number.
+ * @port: The one-based port number from one of the two split roothubs.
*/
-int xhci_find_slot_id_by_port(struct xhci_hcd *xhci, u16 port)
+int xhci_find_slot_id_by_port(struct usb_hcd *hcd, struct xhci_hcd *xhci,
+ u16 port)
{
int slot_id;
int i;
+ enum usb_device_speed speed;
slot_id = 0;
for (i = 0; i < MAX_HC_SLOTS; i++) {
if (!xhci->devs[i])
continue;
- if (xhci->devs[i]->port == port) {
+ speed = xhci->devs[i]->udev->speed;
+ if (((speed == USB_SPEED_SUPER) == (hcd->speed == HCD_USB3))
+ && xhci->devs[i]->port == port) {
slot_id = i;
break;
}
@@ -226,11 +313,11 @@ void xhci_ring_device(struct xhci_hcd *xhci, int slot_id)
return;
}
-static void xhci_disable_port(struct xhci_hcd *xhci, u16 wIndex,
- u32 __iomem *addr, u32 port_status)
+static void xhci_disable_port(struct usb_hcd *hcd, struct xhci_hcd *xhci,
+ u16 wIndex, u32 __iomem *addr, u32 port_status)
{
/* Don't allow the USB core to disable SuperSpeed ports. */
- if (xhci->port_array[wIndex] == 0x03) {
+ if (hcd->speed == HCD_USB3) {
xhci_dbg(xhci, "Ignoring request to disable "
"SuperSpeed port.\n");
return;
@@ -289,10 +376,18 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
unsigned long flags;
u32 temp, temp1, status;
int retval = 0;
- u32 __iomem *addr;
+ u32 __iomem **port_array;
int slot_id;
-
- ports = HCS_MAX_PORTS(xhci->hcs_params1);
+ struct xhci_bus_state *bus_state;
+
+ if (hcd->speed == HCD_USB3) {
+ ports = xhci->num_usb3_ports;
+ port_array = xhci->usb3_ports;
+ } else {
+ ports = xhci->num_usb2_ports;
+ port_array = xhci->usb2_ports;
+ }
+ bus_state = &xhci->bus_state[hcd_index(hcd)];
spin_lock_irqsave(&xhci->lock, flags);
switch (typeReq) {
@@ -301,17 +396,35 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
memset(buf, 0, 4);
break;
case GetHubDescriptor:
- xhci_hub_descriptor(xhci, (struct usb_hub_descriptor *) buf);
+ /* Check to make sure userspace is asking for the USB 3.0 hub
+ * descriptor for the USB 3.0 roothub. If not, we stall the
+ * endpoint, like external hubs do.
+ */
+ if (hcd->speed == HCD_USB3 &&
+ (wLength < USB_DT_SS_HUB_SIZE ||
+ wValue != (USB_DT_SS_HUB << 8))) {
+ xhci_dbg(xhci, "Wrong hub descriptor type for "
+ "USB 3.0 roothub.\n");
+ goto error;
+ }
+ xhci_hub_descriptor(hcd, xhci,
+ (struct usb_hub_descriptor *) buf);
break;
case GetPortStatus:
if (!wIndex || wIndex > ports)
goto error;
wIndex--;
status = 0;
- addr = &xhci->op_regs->port_status_base + NUM_PORT_REGS*(wIndex & 0xff);
- temp = xhci_readl(xhci, addr);
+ temp = xhci_readl(xhci, port_array[wIndex]);
+ if (temp == 0xffffffff) {
+ retval = -ENODEV;
+ break;
+ }
xhci_dbg(xhci, "get port status, actual port %d status = 0x%x\n", wIndex, temp);
+ /* FIXME - should we return a port status value like the USB
+ * 3.0 external hubs do?
+ */
/* wPortChange bits */
if (temp & PORT_CSC)
status |= USB_PORT_STAT_C_CONNECTION << 16;
@@ -330,38 +443,33 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
if ((temp & PORT_RESET) || !(temp & PORT_PE))
goto error;
if (!DEV_SUPERSPEED(temp) && time_after_eq(jiffies,
- xhci->resume_done[wIndex])) {
+ bus_state->resume_done[wIndex])) {
xhci_dbg(xhci, "Resume USB2 port %d\n",
wIndex + 1);
- xhci->resume_done[wIndex] = 0;
+ bus_state->resume_done[wIndex] = 0;
temp1 = xhci_port_state_to_neutral(temp);
temp1 &= ~PORT_PLS_MASK;
temp1 |= PORT_LINK_STROBE | XDEV_U0;
- xhci_writel(xhci, temp1, addr);
+ xhci_writel(xhci, temp1, port_array[wIndex]);
xhci_dbg(xhci, "set port %d resume\n",
wIndex + 1);
- slot_id = xhci_find_slot_id_by_port(xhci,
+ slot_id = xhci_find_slot_id_by_port(hcd, xhci,
wIndex + 1);
if (!slot_id) {
xhci_dbg(xhci, "slot_id is zero\n");
goto error;
}
xhci_ring_device(xhci, slot_id);
- xhci->port_c_suspend[wIndex >> 5] |=
- 1 << (wIndex & 31);
- xhci->suspended_ports[wIndex >> 5] &=
- ~(1 << (wIndex & 31));
+ bus_state->port_c_suspend |= 1 << wIndex;
+ bus_state->suspended_ports &= ~(1 << wIndex);
}
}
if ((temp & PORT_PLS_MASK) == XDEV_U0
&& (temp & PORT_POWER)
- && (xhci->suspended_ports[wIndex >> 5] &
- (1 << (wIndex & 31)))) {
- xhci->suspended_ports[wIndex >> 5] &=
- ~(1 << (wIndex & 31));
- xhci->port_c_suspend[wIndex >> 5] |=
- 1 << (wIndex & 31);
+ && (bus_state->suspended_ports & (1 << wIndex))) {
+ bus_state->suspended_ports &= ~(1 << wIndex);
+ bus_state->port_c_suspend |= 1 << wIndex;
}
if (temp & PORT_CONNECT) {
status |= USB_PORT_STAT_CONNECTION;
@@ -375,7 +483,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
status |= USB_PORT_STAT_RESET;
if (temp & PORT_POWER)
status |= USB_PORT_STAT_POWER;
- if (xhci->port_c_suspend[wIndex >> 5] & (1 << (wIndex & 31)))
+ if (bus_state->port_c_suspend & (1 << wIndex))
status |= 1 << USB_PORT_FEAT_C_SUSPEND;
xhci_dbg(xhci, "Get port status returned 0x%x\n", status);
put_unaligned(cpu_to_le32(status), (__le32 *) buf);
@@ -385,12 +493,16 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
if (!wIndex || wIndex > ports)
goto error;
wIndex--;
- addr = &xhci->op_regs->port_status_base + NUM_PORT_REGS*(wIndex & 0xff);
- temp = xhci_readl(xhci, addr);
+ temp = xhci_readl(xhci, port_array[wIndex]);
+ if (temp == 0xffffffff) {
+ retval = -ENODEV;
+ break;
+ }
temp = xhci_port_state_to_neutral(temp);
+ /* FIXME: What new port features do we need to support? */
switch (wValue) {
case USB_PORT_FEAT_SUSPEND:
- temp = xhci_readl(xhci, addr);
+ temp = xhci_readl(xhci, port_array[wIndex]);
/* In spec software should not attempt to suspend
* a port unless the port reports that it is in the
* enabled (PED = ‘1’,PLS < ‘3’) state.
@@ -402,7 +514,8 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
goto error;
}
- slot_id = xhci_find_slot_id_by_port(xhci, wIndex + 1);
+ slot_id = xhci_find_slot_id_by_port(hcd, xhci,
+ wIndex + 1);
if (!slot_id) {
xhci_warn(xhci, "slot_id is zero\n");
goto error;
@@ -415,15 +528,14 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
temp = xhci_port_state_to_neutral(temp);
temp &= ~PORT_PLS_MASK;
temp |= PORT_LINK_STROBE | XDEV_U3;
- xhci_writel(xhci, temp, addr);
+ xhci_writel(xhci, temp, port_array[wIndex]);
spin_unlock_irqrestore(&xhci->lock, flags);
msleep(10); /* wait device to enter */
spin_lock_irqsave(&xhci->lock, flags);
- temp = xhci_readl(xhci, addr);
- xhci->suspended_ports[wIndex >> 5] |=
- 1 << (wIndex & (31));
+ temp = xhci_readl(xhci, port_array[wIndex]);
+ bus_state->suspended_ports |= 1 << wIndex;
break;
case USB_PORT_FEAT_POWER:
/*
@@ -432,34 +544,39 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
* However, khubd will ignore the roothub events until
* the roothub is registered.
*/
- xhci_writel(xhci, temp | PORT_POWER, addr);
+ xhci_writel(xhci, temp | PORT_POWER,
+ port_array[wIndex]);
- temp = xhci_readl(xhci, addr);
+ temp = xhci_readl(xhci, port_array[wIndex]);
xhci_dbg(xhci, "set port power, actual port %d status = 0x%x\n", wIndex, temp);
break;
case USB_PORT_FEAT_RESET:
temp = (temp | PORT_RESET);
- xhci_writel(xhci, temp, addr);
+ xhci_writel(xhci, temp, port_array[wIndex]);
- temp = xhci_readl(xhci, addr);
+ temp = xhci_readl(xhci, port_array[wIndex]);
xhci_dbg(xhci, "set port reset, actual port %d status = 0x%x\n", wIndex, temp);
break;
default:
goto error;
}
- temp = xhci_readl(xhci, addr); /* unblock any posted writes */
+ /* unblock any posted writes */
+ temp = xhci_readl(xhci, port_array[wIndex]);
break;
case ClearPortFeature:
if (!wIndex || wIndex > ports)
goto error;
wIndex--;
- addr = &xhci->op_regs->port_status_base +
- NUM_PORT_REGS*(wIndex & 0xff);
- temp = xhci_readl(xhci, addr);
+ temp = xhci_readl(xhci, port_array[wIndex]);
+ if (temp == 0xffffffff) {
+ retval = -ENODEV;
+ break;
+ }
+ /* FIXME: What new port features do we need to support? */
temp = xhci_port_state_to_neutral(temp);
switch (wValue) {
case USB_PORT_FEAT_SUSPEND:
- temp = xhci_readl(xhci, addr);
+ temp = xhci_readl(xhci, port_array[wIndex]);
xhci_dbg(xhci, "clear USB_PORT_FEAT_SUSPEND\n");
xhci_dbg(xhci, "PORTSC %04x\n", temp);
if (temp & PORT_RESET)
@@ -471,30 +588,34 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
temp = xhci_port_state_to_neutral(temp);
temp &= ~PORT_PLS_MASK;
temp |= PORT_LINK_STROBE | XDEV_U0;
- xhci_writel(xhci, temp, addr);
- xhci_readl(xhci, addr);
+ xhci_writel(xhci, temp,
+ port_array[wIndex]);
+ xhci_readl(xhci, port_array[wIndex]);
} else {
temp = xhci_port_state_to_neutral(temp);
temp &= ~PORT_PLS_MASK;
temp |= PORT_LINK_STROBE | XDEV_RESUME;
- xhci_writel(xhci, temp, addr);
+ xhci_writel(xhci, temp,
+ port_array[wIndex]);
spin_unlock_irqrestore(&xhci->lock,
flags);
msleep(20);
spin_lock_irqsave(&xhci->lock, flags);
- temp = xhci_readl(xhci, addr);
+ temp = xhci_readl(xhci,
+ port_array[wIndex]);
temp = xhci_port_state_to_neutral(temp);
temp &= ~PORT_PLS_MASK;
temp |= PORT_LINK_STROBE | XDEV_U0;
- xhci_writel(xhci, temp, addr);
+ xhci_writel(xhci, temp,
+ port_array[wIndex]);
}
- xhci->port_c_suspend[wIndex >> 5] |=
- 1 << (wIndex & 31);
+ bus_state->port_c_suspend |= 1 << wIndex;
}
- slot_id = xhci_find_slot_id_by_port(xhci, wIndex + 1);
+ slot_id = xhci_find_slot_id_by_port(hcd, xhci,
+ wIndex + 1);
if (!slot_id) {
xhci_dbg(xhci, "slot_id is zero\n");
goto error;
@@ -502,17 +623,17 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
xhci_ring_device(xhci, slot_id);
break;
case USB_PORT_FEAT_C_SUSPEND:
- xhci->port_c_suspend[wIndex >> 5] &=
- ~(1 << (wIndex & 31));
+ bus_state->port_c_suspend &= ~(1 << wIndex);
case USB_PORT_FEAT_C_RESET:
case USB_PORT_FEAT_C_CONNECTION:
case USB_PORT_FEAT_C_OVER_CURRENT:
case USB_PORT_FEAT_C_ENABLE:
xhci_clear_port_change_bit(xhci, wValue, wIndex,
- addr, temp);
+ port_array[wIndex], temp);
break;
case USB_PORT_FEAT_ENABLE:
- xhci_disable_port(xhci, wIndex, addr, temp);
+ xhci_disable_port(hcd, xhci, wIndex,
+ port_array[wIndex], temp);
break;
default:
goto error;
@@ -543,9 +664,17 @@ int xhci_hub_status_data(struct usb_hcd *hcd, char *buf)
int i, retval;
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
int ports;
- u32 __iomem *addr;
-
- ports = HCS_MAX_PORTS(xhci->hcs_params1);
+ u32 __iomem **port_array;
+ struct xhci_bus_state *bus_state;
+
+ if (hcd->speed == HCD_USB3) {
+ ports = xhci->num_usb3_ports;
+ port_array = xhci->usb3_ports;
+ } else {
+ ports = xhci->num_usb2_ports;
+ port_array = xhci->usb2_ports;
+ }
+ bus_state = &xhci->bus_state[hcd_index(hcd)];
/* Initial status is no changes */
retval = (ports + 8) / 8;
@@ -557,13 +686,15 @@ int xhci_hub_status_data(struct usb_hcd *hcd, char *buf)
spin_lock_irqsave(&xhci->lock, flags);
/* For each port, did anything change? If so, set that bit in buf. */
for (i = 0; i < ports; i++) {
- addr = &xhci->op_regs->port_status_base +
- NUM_PORT_REGS*i;
- temp = xhci_readl(xhci, addr);
+ temp = xhci_readl(xhci, port_array[i]);
+ if (temp == 0xffffffff) {
+ retval = -ENODEV;
+ break;
+ }
if ((temp & mask) != 0 ||
- (xhci->port_c_suspend[i >> 5] & 1 << (i & 31)) ||
- (xhci->resume_done[i] && time_after_eq(
- jiffies, xhci->resume_done[i]))) {
+ (bus_state->port_c_suspend & 1 << i) ||
+ (bus_state->resume_done[i] && time_after_eq(
+ jiffies, bus_state->resume_done[i]))) {
buf[(i + 1) / 8] |= 1 << (i + 1) % 8;
status = 1;
}
@@ -577,42 +708,51 @@ int xhci_hub_status_data(struct usb_hcd *hcd, char *buf)
int xhci_bus_suspend(struct usb_hcd *hcd)
{
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
- int port;
+ int max_ports, port_index;
+ u32 __iomem **port_array;
+ struct xhci_bus_state *bus_state;
unsigned long flags;
- xhci_dbg(xhci, "suspend root hub\n");
+ if (hcd->speed == HCD_USB3) {
+ max_ports = xhci->num_usb3_ports;
+ port_array = xhci->usb3_ports;
+ xhci_dbg(xhci, "suspend USB 3.0 root hub\n");
+ } else {
+ max_ports = xhci->num_usb2_ports;
+ port_array = xhci->usb2_ports;
+ xhci_dbg(xhci, "suspend USB 2.0 root hub\n");
+ }
+ bus_state = &xhci->bus_state[hcd_index(hcd)];
spin_lock_irqsave(&xhci->lock, flags);
if (hcd->self.root_hub->do_remote_wakeup) {
- port = HCS_MAX_PORTS(xhci->hcs_params1);
- while (port--) {
- if (xhci->resume_done[port] != 0) {
+ port_index = max_ports;
+ while (port_index--) {
+ if (bus_state->resume_done[port_index] != 0) {
spin_unlock_irqrestore(&xhci->lock, flags);
xhci_dbg(xhci, "suspend failed because "
"port %d is resuming\n",
- port + 1);
+ port_index + 1);
return -EBUSY;
}
}
}
- port = HCS_MAX_PORTS(xhci->hcs_params1);
- xhci->bus_suspended = 0;
- while (port--) {
+ port_index = max_ports;
+ bus_state->bus_suspended = 0;
+ while (port_index--) {
/* suspend the port if the port is not suspended */
- u32 __iomem *addr;
u32 t1, t2;
int slot_id;
- addr = &xhci->op_regs->port_status_base +
- NUM_PORT_REGS * (port & 0xff);
- t1 = xhci_readl(xhci, addr);
+ t1 = xhci_readl(xhci, port_array[port_index]);
t2 = xhci_port_state_to_neutral(t1);
if ((t1 & PORT_PE) && !(t1 & PORT_PLS_MASK)) {
- xhci_dbg(xhci, "port %d not suspended\n", port);
- slot_id = xhci_find_slot_id_by_port(xhci, port + 1);
+ xhci_dbg(xhci, "port %d not suspended\n", port_index);
+ slot_id = xhci_find_slot_id_by_port(hcd, xhci,
+ port_index + 1);
if (slot_id) {
spin_unlock_irqrestore(&xhci->lock, flags);
xhci_stop_device(xhci, slot_id, 1);
@@ -620,7 +760,7 @@ int xhci_bus_suspend(struct usb_hcd *hcd)
}
t2 &= ~PORT_PLS_MASK;
t2 |= PORT_LINK_STROBE | XDEV_U3;
- set_bit(port, &xhci->bus_suspended);
+ set_bit(port_index, &bus_state->bus_suspended);
}
if (hcd->self.root_hub->do_remote_wakeup) {
if (t1 & PORT_CONNECT) {
@@ -635,22 +775,24 @@ int xhci_bus_suspend(struct usb_hcd *hcd)
t1 = xhci_port_state_to_neutral(t1);
if (t1 != t2)
- xhci_writel(xhci, t2, addr);
+ xhci_writel(xhci, t2, port_array[port_index]);
if (DEV_HIGHSPEED(t1)) {
/* enable remote wake up for USB 2.0 */
u32 __iomem *addr;
u32 tmp;
- addr = &xhci->op_regs->port_power_base +
- NUM_PORT_REGS * (port & 0xff);
+ /* Add one to the port status register address to get
+ * the port power control register address.
+ */
+ addr = port_array[port_index] + 1;
tmp = xhci_readl(xhci, addr);
tmp |= PORT_RWE;
xhci_writel(xhci, tmp, addr);
}
}
hcd->state = HC_STATE_SUSPENDED;
- xhci->next_statechange = jiffies + msecs_to_jiffies(10);
+ bus_state->next_statechange = jiffies + msecs_to_jiffies(10);
spin_unlock_irqrestore(&xhci->lock, flags);
return 0;
}
@@ -658,13 +800,24 @@ int xhci_bus_suspend(struct usb_hcd *hcd)
int xhci_bus_resume(struct usb_hcd *hcd)
{
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
- int port;
+ int max_ports, port_index;
+ u32 __iomem **port_array;
+ struct xhci_bus_state *bus_state;
u32 temp;
unsigned long flags;
- xhci_dbg(xhci, "resume root hub\n");
+ if (hcd->speed == HCD_USB3) {
+ max_ports = xhci->num_usb3_ports;
+ port_array = xhci->usb3_ports;
+ xhci_dbg(xhci, "resume USB 3.0 root hub\n");
+ } else {
+ max_ports = xhci->num_usb2_ports;
+ port_array = xhci->usb2_ports;
+ xhci_dbg(xhci, "resume USB 2.0 root hub\n");
+ }
+ bus_state = &xhci->bus_state[hcd_index(hcd)];
- if (time_before(jiffies, xhci->next_statechange))
+ if (time_before(jiffies, bus_state->next_statechange))
msleep(5);
spin_lock_irqsave(&xhci->lock, flags);
@@ -678,57 +831,57 @@ int xhci_bus_resume(struct usb_hcd *hcd)
temp &= ~CMD_EIE;
xhci_writel(xhci, temp, &xhci->op_regs->command);
- port = HCS_MAX_PORTS(xhci->hcs_params1);
- while (port--) {
+ port_index = max_ports;
+ while (port_index--) {
/* Check whether need resume ports. If needed
resume port and disable remote wakeup */
- u32 __iomem *addr;
u32 temp;
int slot_id;
- addr = &xhci->op_regs->port_status_base +
- NUM_PORT_REGS * (port & 0xff);
- temp = xhci_readl(xhci, addr);
+ temp = xhci_readl(xhci, port_array[port_index]);
if (DEV_SUPERSPEED(temp))
temp &= ~(PORT_RWC_BITS | PORT_CEC | PORT_WAKE_BITS);
else
temp &= ~(PORT_RWC_BITS | PORT_WAKE_BITS);
- if (test_bit(port, &xhci->bus_suspended) &&
+ if (test_bit(port_index, &bus_state->bus_suspended) &&
(temp & PORT_PLS_MASK)) {
if (DEV_SUPERSPEED(temp)) {
temp = xhci_port_state_to_neutral(temp);
temp &= ~PORT_PLS_MASK;
temp |= PORT_LINK_STROBE | XDEV_U0;
- xhci_writel(xhci, temp, addr);
+ xhci_writel(xhci, temp, port_array[port_index]);
} else {
temp = xhci_port_state_to_neutral(temp);
temp &= ~PORT_PLS_MASK;
temp |= PORT_LINK_STROBE | XDEV_RESUME;
- xhci_writel(xhci, temp, addr);
+ xhci_writel(xhci, temp, port_array[port_index]);
spin_unlock_irqrestore(&xhci->lock, flags);
msleep(20);
spin_lock_irqsave(&xhci->lock, flags);
- temp = xhci_readl(xhci, addr);
+ temp = xhci_readl(xhci, port_array[port_index]);
temp = xhci_port_state_to_neutral(temp);
temp &= ~PORT_PLS_MASK;
temp |= PORT_LINK_STROBE | XDEV_U0;
- xhci_writel(xhci, temp, addr);
+ xhci_writel(xhci, temp, port_array[port_index]);
}
- slot_id = xhci_find_slot_id_by_port(xhci, port + 1);
+ slot_id = xhci_find_slot_id_by_port(hcd,
+ xhci, port_index + 1);
if (slot_id)
xhci_ring_device(xhci, slot_id);
} else
- xhci_writel(xhci, temp, addr);
+ xhci_writel(xhci, temp, port_array[port_index]);
if (DEV_HIGHSPEED(temp)) {
/* disable remote wake up for USB 2.0 */
u32 __iomem *addr;
u32 tmp;
- addr = &xhci->op_regs->port_power_base +
- NUM_PORT_REGS * (port & 0xff);
+ /* Add one to the port status register address to get
+ * the port power control register address.
+ */
+ addr = port_array[port_index] + 1;
tmp = xhci_readl(xhci, addr);
tmp &= ~PORT_RWE;
xhci_writel(xhci, tmp, addr);
@@ -737,8 +890,7 @@ int xhci_bus_resume(struct usb_hcd *hcd)
(void) xhci_readl(xhci, &xhci->op_regs->command);
- xhci->next_statechange = jiffies + msecs_to_jiffies(5);
- hcd->state = HC_STATE_RUNNING;
+ bus_state->next_statechange = jiffies + msecs_to_jiffies(5);
/* re-enable irqs */
temp = xhci_readl(xhci, &xhci->op_regs->command);
temp |= CMD_EIE;
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-28 00:49:03 +0000