[PATCH 04/16] xhci: xhci-hub: use new port structures to get port address instead of port array
Kai-Heng Feng
kai.heng.feng at canonical.com
Tue Jul 3 07:20:17 UTC 2018
From: Mathias Nyman <mathias.nyman at linux.intel.com>
BugLink: https://bugs.launchpad.net/bugs/1763594
Use the new port structures for functions in xhci-hub.c to get
port mmio address of portsc register instead of the port array
xhci_get_port_io_addr() is no longer needeed and is removed.
Plan is to get rid of the mmio port array completely.
Signed-off-by: Mathias Nyman <mathias.nyman at linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
(cherry picked from commit e740b019d7c6b4de38f57a26d4cf1b15125bdcbf)
Signed-off-by: Kai-Heng Feng <kai.heng.feng at canonical.com>
---
drivers/usb/host/xhci-hub.c | 140 ++++++++++++++++++++----------------
1 file changed, 78 insertions(+), 62 deletions(-)
diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
index 119f594d1d27..557c16b81b58 100644
--- a/drivers/usb/host/xhci-hub.c
+++ b/drivers/usb/host/xhci-hub.c
@@ -189,9 +189,10 @@ static void xhci_usb2_hub_descriptor(struct usb_hcd *hcd, struct xhci_hcd *xhci,
__u8 port_removable[(USB_MAXCHILDREN + 1 + 7) / 8];
u32 portsc;
unsigned int i;
+ struct xhci_hub *rhub;
- ports = xhci->num_usb2_ports;
-
+ rhub = &xhci->usb2_rhub;
+ ports = rhub->num_ports;
xhci_common_hub_descriptor(xhci, desc, ports);
desc->bDescriptorType = USB_DT_HUB;
temp = 1 + (ports / 8);
@@ -202,7 +203,7 @@ static void xhci_usb2_hub_descriptor(struct usb_hcd *hcd, struct xhci_hcd *xhci,
*/
memset(port_removable, 0, sizeof(port_removable));
for (i = 0; i < ports; i++) {
- portsc = readl(xhci->usb2_ports[i]);
+ portsc = readl(rhub->ports[i]->addr);
/* If a device is removable, PORTSC reports a 0, same as in the
* hub descriptor DeviceRemovable bits.
*/
@@ -241,8 +242,10 @@ static void xhci_usb3_hub_descriptor(struct usb_hcd *hcd, struct xhci_hcd *xhci,
u16 port_removable;
u32 portsc;
unsigned int i;
+ struct xhci_hub *rhub;
- ports = xhci->num_usb3_ports;
+ rhub = &xhci->usb3_rhub;
+ ports = rhub->num_ports;
xhci_common_hub_descriptor(xhci, desc, ports);
desc->bDescriptorType = USB_DT_SS_HUB;
desc->bDescLength = USB_DT_SS_HUB_SIZE;
@@ -256,7 +259,7 @@ static void xhci_usb3_hub_descriptor(struct usb_hcd *hcd, struct xhci_hcd *xhci,
port_removable = 0;
/* bit 0 is reserved, bit 1 is for port 1, etc. */
for (i = 0; i < ports; i++) {
- portsc = readl(xhci->usb3_ports[i]);
+ portsc = readl(rhub->ports[i]->addr);
if (portsc & PORT_DEV_REMOVE)
port_removable |= 1 << (i + 1);
}
@@ -564,14 +567,6 @@ struct xhci_hub *xhci_get_rhub(struct usb_hcd *hcd)
return &xhci->usb2_rhub;
}
-static __le32 __iomem *xhci_get_port_io_addr(struct usb_hcd *hcd, int index)
-{
- __le32 __iomem **port_array;
-
- xhci_get_ports(hcd, &port_array);
- return port_array[index];
-}
-
/*
* xhci_set_port_power() must be called with xhci->lock held.
* It will release and re-aquire the lock while calling ACPI
@@ -580,21 +575,23 @@ static __le32 __iomem *xhci_get_port_io_addr(struct usb_hcd *hcd, int index)
static void xhci_set_port_power(struct xhci_hcd *xhci, struct usb_hcd *hcd,
u16 index, bool on, unsigned long *flags)
{
- __le32 __iomem *addr;
+ struct xhci_hub *rhub;
+ struct xhci_port *port;
u32 temp;
- addr = xhci_get_port_io_addr(hcd, index);
- temp = readl(addr);
+ rhub = xhci_get_rhub(hcd);
+ port = rhub->ports[index];
+ temp = readl(port->addr);
temp = xhci_port_state_to_neutral(temp);
if (on) {
/* Power on */
- writel(temp | PORT_POWER, addr);
- temp = readl(addr);
+ writel(temp | PORT_POWER, port->addr);
+ temp = readl(port->addr);
xhci_dbg(xhci, "set port power, actual port %d status = 0x%x\n",
index, temp);
} else {
/* Power off */
- writel(temp & ~PORT_POWER, addr);
+ writel(temp & ~PORT_POWER, port->addr);
}
spin_unlock_irqrestore(&xhci->lock, *flags);
@@ -610,13 +607,13 @@ static void xhci_port_set_test_mode(struct xhci_hcd *xhci,
u16 test_mode, u16 wIndex)
{
u32 temp;
- __le32 __iomem *addr;
+ struct xhci_port *port;
- /* xhci only supports test mode for usb2 ports, i.e. xhci->main_hcd */
- addr = xhci_get_port_io_addr(xhci->main_hcd, wIndex);
- temp = readl(addr + PORTPMSC);
+ /* xhci only supports test mode for usb2 ports */
+ port = xhci->usb2_rhub.ports[wIndex];
+ temp = readl(port->addr + PORTPMSC);
temp |= test_mode << PORT_TEST_MODE_SHIFT;
- writel(temp, addr + PORTPMSC);
+ writel(temp, port->addr + PORTPMSC);
xhci->test_mode = test_mode;
if (test_mode == TEST_FORCE_EN)
xhci_start(xhci);
@@ -643,10 +640,10 @@ static int xhci_enter_test_mode(struct xhci_hcd *xhci,
/* Put all ports to the Disable state by clear PP */
xhci_dbg(xhci, "Disable all port (PP = 0)\n");
/* Power off USB3 ports*/
- for (i = 0; i < xhci->num_usb3_ports; i++)
+ for (i = 0; i < xhci->usb3_rhub.num_ports; i++)
xhci_set_port_power(xhci, xhci->shared_hcd, i, false, flags);
/* Power off USB2 ports*/
- for (i = 0; i < xhci->num_usb2_ports; i++)
+ for (i = 0; i < xhci->usb2_rhub.num_ports; i++)
xhci_set_port_power(xhci, xhci->main_hcd, i, false, flags);
/* Stop the controller */
xhci_dbg(xhci, "Stop controller\n");
@@ -804,7 +801,7 @@ static void xhci_hub_report_usb3_link_state(struct xhci_hcd *xhci,
static void xhci_del_comp_mod_timer(struct xhci_hcd *xhci, u32 status,
u16 wIndex)
{
- u32 all_ports_seen_u0 = ((1 << xhci->num_usb3_ports)-1);
+ u32 all_ports_seen_u0 = ((1 << xhci->usb3_rhub.num_ports) - 1);
bool port_in_u0 = ((status & PORT_PLS_MASK) == XDEV_U0);
if (!(xhci->quirks & XHCI_COMP_MODE_QUIRK))
@@ -859,6 +856,11 @@ static u32 xhci_get_port_status(struct usb_hcd *hcd,
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
u32 status = 0;
int slot_id;
+ struct xhci_hub *rhub;
+ struct xhci_port *port;
+
+ rhub = xhci_get_rhub(hcd);
+ port = rhub->ports[wIndex];
/* wPortChange bits */
if (raw_port_status & PORT_CSC)
@@ -950,7 +952,7 @@ static u32 xhci_get_port_status(struct usb_hcd *hcd,
}
xhci_ring_device(xhci, slot_id);
} else {
- int port_status = readl(port_array[wIndex]);
+ int port_status = readl(port->addr);
xhci_warn(xhci, "Port resume took longer than %i msec, port status = 0x%x\n",
XHCI_MAX_REXIT_TIMEOUT,
port_status);
@@ -1041,7 +1043,11 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
u16 wake_mask = 0;
u16 timeout = 0;
u16 test_mode = 0;
+ struct xhci_hub *rhub;
+ struct xhci_port **ports;
+ rhub = xhci_get_rhub(hcd);
+ ports = rhub->ports;
max_ports = xhci_get_ports(hcd, &port_array);
bus_state = &xhci->bus_state[hcd_index(hcd)];
@@ -1080,7 +1086,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
if (!wIndex || wIndex > max_ports)
goto error;
wIndex--;
- temp = readl(port_array[wIndex]);
+ temp = readl(ports[wIndex]->addr);
if (temp == ~(u32)0) {
xhci_hc_died(xhci);
retval = -ENODEV;
@@ -1105,7 +1111,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
retval = -EINVAL;
break;
}
- port_li = readl(port_array[wIndex] + PORTLI);
+ port_li = readl(ports[wIndex]->addr + PORTLI);
status = xhci_get_ext_port_status(temp, port_li);
put_unaligned_le32(cpu_to_le32(status), &buf[4]);
}
@@ -1123,7 +1129,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
if (!wIndex || wIndex > max_ports)
goto error;
wIndex--;
- temp = readl(port_array[wIndex]);
+ temp = readl(ports[wIndex]->addr);
if (temp == ~(u32)0) {
xhci_hc_died(xhci);
retval = -ENODEV;
@@ -1133,7 +1139,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
/* FIXME: What new port features do we need to support? */
switch (wValue) {
case USB_PORT_FEAT_SUSPEND:
- temp = readl(port_array[wIndex]);
+ temp = readl(ports[wIndex]->addr);
if ((temp & PORT_PLS_MASK) != XDEV_U0) {
/* Resume the port to U0 first */
xhci_set_link_state(xhci, port_array, wIndex,
@@ -1146,7 +1152,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
* a port unless the port reports that it is in the
* enabled (PED = ‘1’,PLS < ‘3’) state.
*/
- temp = readl(port_array[wIndex]);
+ temp = readl(ports[wIndex]->addr);
if ((temp & PORT_PE) == 0 || (temp & PORT_RESET)
|| (temp & PORT_PLS_MASK) >= XDEV_U3) {
xhci_warn(xhci, "USB core suspending device not in U0/U1/U2.\n");
@@ -1170,12 +1176,11 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
msleep(10); /* wait device to enter */
spin_lock_irqsave(&xhci->lock, flags);
- temp = readl(port_array[wIndex]);
+ temp = readl(ports[wIndex]->addr);
bus_state->suspended_ports |= 1 << wIndex;
break;
case USB_PORT_FEAT_LINK_STATE:
- temp = readl(port_array[wIndex]);
-
+ temp = readl(ports[wIndex]->addr);
/* Disable port */
if (link_state == USB_SS_PORT_LS_SS_DISABLED) {
xhci_dbg(xhci, "Disable port %d\n", wIndex);
@@ -1187,8 +1192,8 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
temp |= PORT_CSC | PORT_PEC | PORT_WRC |
PORT_OCC | PORT_RC | PORT_PLC |
PORT_CEC;
- writel(temp | PORT_PE, port_array[wIndex]);
- temp = readl(port_array[wIndex]);
+ writel(temp | PORT_PE, ports[wIndex]->addr);
+ temp = readl(ports[wIndex]->addr);
break;
}
@@ -1197,7 +1202,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
xhci_dbg(xhci, "Enable port %d\n", wIndex);
xhci_set_link_state(xhci, port_array, wIndex,
link_state);
- temp = readl(port_array[wIndex]);
+ temp = readl(ports[wIndex]->addr);
break;
}
@@ -1230,7 +1235,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
wIndex);
xhci_set_link_state(xhci, port_array, wIndex,
link_state);
- temp = readl(port_array[wIndex]);
+ temp = readl(ports[wIndex]->addr);
break;
}
@@ -1264,7 +1269,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
msleep(20); /* wait device to enter */
spin_lock_irqsave(&xhci->lock, flags);
- temp = readl(port_array[wIndex]);
+ temp = readl(ports[wIndex]->addr);
if (link_state == USB_SS_PORT_LS_U3)
bus_state->suspended_ports |= 1 << wIndex;
break;
@@ -1279,40 +1284,39 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
break;
case USB_PORT_FEAT_RESET:
temp = (temp | PORT_RESET);
- writel(temp, port_array[wIndex]);
+ writel(temp, ports[wIndex]->addr);
- temp = readl(port_array[wIndex]);
+ temp = readl(ports[wIndex]->addr);
xhci_dbg(xhci, "set port reset, actual port %d status = 0x%x\n", wIndex, temp);
break;
case USB_PORT_FEAT_REMOTE_WAKE_MASK:
xhci_set_remote_wake_mask(xhci, port_array,
wIndex, wake_mask);
- temp = readl(port_array[wIndex]);
+ temp = readl(ports[wIndex]->addr);
xhci_dbg(xhci, "set port remote wake mask, "
"actual port %d status = 0x%x\n",
wIndex, temp);
break;
case USB_PORT_FEAT_BH_PORT_RESET:
temp |= PORT_WR;
- writel(temp, port_array[wIndex]);
-
- temp = readl(port_array[wIndex]);
+ writel(temp, ports[wIndex]->addr);
+ temp = readl(ports[wIndex]->addr);
break;
case USB_PORT_FEAT_U1_TIMEOUT:
if (hcd->speed < HCD_USB3)
goto error;
- temp = readl(port_array[wIndex] + PORTPMSC);
+ temp = readl(ports[wIndex]->addr + PORTPMSC);
temp &= ~PORT_U1_TIMEOUT_MASK;
temp |= PORT_U1_TIMEOUT(timeout);
- writel(temp, port_array[wIndex] + PORTPMSC);
+ writel(temp, ports[wIndex]->addr + PORTPMSC);
break;
case USB_PORT_FEAT_U2_TIMEOUT:
if (hcd->speed < HCD_USB3)
goto error;
- temp = readl(port_array[wIndex] + PORTPMSC);
+ temp = readl(ports[wIndex]->addr + PORTPMSC);
temp &= ~PORT_U2_TIMEOUT_MASK;
temp |= PORT_U2_TIMEOUT(timeout);
- writel(temp, port_array[wIndex] + PORTPMSC);
+ writel(temp, ports[wIndex]->addr + PORTPMSC);
break;
case USB_PORT_FEAT_TEST:
/* 4.19.6 Port Test Modes (USB2 Test Mode) */
@@ -1327,13 +1331,13 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
goto error;
}
/* unblock any posted writes */
- temp = readl(port_array[wIndex]);
+ temp = readl(ports[wIndex]->addr);
break;
case ClearPortFeature:
if (!wIndex || wIndex > max_ports)
goto error;
wIndex--;
- temp = readl(port_array[wIndex]);
+ temp = readl(ports[wIndex]->addr);
if (temp == ~(u32)0) {
xhci_hc_died(xhci);
retval = -ENODEV;
@@ -1343,7 +1347,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
temp = xhci_port_state_to_neutral(temp);
switch (wValue) {
case USB_PORT_FEAT_SUSPEND:
- temp = readl(port_array[wIndex]);
+ temp = readl(ports[wIndex]->addr);
xhci_dbg(xhci, "clear USB_PORT_FEAT_SUSPEND\n");
xhci_dbg(xhci, "PORTSC %04x\n", temp);
if (temp & PORT_RESET)
@@ -1383,11 +1387,11 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
case USB_PORT_FEAT_C_PORT_LINK_STATE:
case USB_PORT_FEAT_C_PORT_CONFIG_ERROR:
xhci_clear_port_change_bit(xhci, wValue, wIndex,
- port_array[wIndex], temp);
+ ports[wIndex]->addr, temp);
break;
case USB_PORT_FEAT_ENABLE:
xhci_disable_port(hcd, xhci, wIndex,
- port_array[wIndex], temp);
+ ports[wIndex]->addr, temp);
break;
case USB_PORT_FEAT_POWER:
xhci_set_port_power(xhci, hcd, wIndex, false, &flags);
@@ -1427,7 +1431,11 @@ int xhci_hub_status_data(struct usb_hcd *hcd, char *buf)
__le32 __iomem **port_array;
struct xhci_bus_state *bus_state;
bool reset_change = false;
+ struct xhci_hub *rhub;
+ struct xhci_port **ports;
+ rhub = xhci_get_rhub(hcd);
+ ports = rhub->ports;
max_ports = xhci_get_ports(hcd, &port_array);
bus_state = &xhci->bus_state[hcd_index(hcd)];
@@ -1446,7 +1454,7 @@ 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 < max_ports; i++) {
- temp = readl(port_array[i]);
+ temp = readl(ports[i]->addr);
if (temp == ~(u32)0) {
xhci_hc_died(xhci);
retval = -ENODEV;
@@ -1479,7 +1487,11 @@ int xhci_bus_suspend(struct usb_hcd *hcd)
__le32 __iomem **port_array;
struct xhci_bus_state *bus_state;
unsigned long flags;
+ struct xhci_hub *rhub;
+ struct xhci_port **ports;
+ rhub = xhci_get_rhub(hcd);
+ ports = rhub->ports;
max_ports = xhci_get_ports(hcd, &port_array);
bus_state = &xhci->bus_state[hcd_index(hcd)];
@@ -1501,7 +1513,7 @@ int xhci_bus_suspend(struct usb_hcd *hcd)
u32 t1, t2;
int slot_id;
- t1 = readl(port_array[port_index]);
+ t1 = readl(ports[port_index]->addr);
t2 = xhci_port_state_to_neutral(t1);
if ((t1 & PORT_PE) && !(t1 & PORT_PLS_MASK)) {
@@ -1534,7 +1546,7 @@ int xhci_bus_suspend(struct usb_hcd *hcd)
t1 = xhci_port_state_to_neutral(t1);
if (t1 != t2)
- writel(t2, port_array[port_index]);
+ writel(t2, ports[port_index]->addr);
}
hcd->state = HC_STATE_SUSPENDED;
bus_state->next_statechange = jiffies + msecs_to_jiffies(10);
@@ -1582,7 +1594,11 @@ int xhci_bus_resume(struct usb_hcd *hcd)
int sret;
u32 next_state;
u32 temp, portsc;
+ struct xhci_hub *rhub;
+ struct xhci_port **ports;
+ rhub = xhci_get_rhub(hcd);
+ ports = rhub->ports;
max_ports = xhci_get_ports(hcd, &port_array);
bus_state = &xhci->bus_state[hcd_index(hcd)];
@@ -1608,7 +1624,7 @@ int xhci_bus_resume(struct usb_hcd *hcd)
port_index = max_ports;
while (port_index--) {
- portsc = readl(port_array[port_index]);
+ portsc = readl(ports[port_index]->addr);
/* warm reset CAS limited ports stuck in polling/compliance */
if ((xhci->quirks & XHCI_MISSING_CAS) &&
@@ -1637,7 +1653,7 @@ int xhci_bus_resume(struct usb_hcd *hcd)
}
/* disable wake for all ports, write new link state if needed */
portsc &= ~(PORT_RWC_BITS | PORT_CEC | PORT_WAKE_BITS);
- writel(portsc, port_array[port_index]);
+ writel(portsc, ports[port_index]->addr);
}
/* USB2 specific resume signaling delay and U0 link state transition */
@@ -1659,7 +1675,7 @@ int xhci_bus_resume(struct usb_hcd *hcd)
/* poll for U0 link state complete, both USB2 and USB3 */
for_each_set_bit(port_index, &bus_state->bus_suspended, BITS_PER_LONG) {
- sret = xhci_handshake(port_array[port_index], PORT_PLC,
+ sret = xhci_handshake(ports[port_index]->addr, PORT_PLC,
PORT_PLC, 10 * 1000);
if (sret) {
xhci_warn(xhci, "port %d resume PLC timeout\n",
--
2.17.1
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