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path: root/drivers/usb/host/xhci.c
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Diffstat (limited to 'drivers/usb/host/xhci.c')
-rw-r--r--drivers/usb/host/xhci.c54
1 files changed, 23 insertions, 31 deletions
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 2424d3020ca3..1eeb3396300f 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -21,6 +21,7 @@
#include "xhci-trace.h"
#include "xhci-mtk.h"
#include "xhci-debugfs.h"
+#include "xhci-dbgcap.h"
#define DRIVER_AUTHOR "Sarah Sharp"
#define DRIVER_DESC "'eXtensible' Host Controller (xHC) Driver"
@@ -573,10 +574,6 @@ int xhci_run(struct usb_hcd *hcd)
if (ret)
return ret;
- xhci_dbg_cmd_ptrs(xhci);
-
- xhci_dbg(xhci, "ERST memory map follows:\n");
- xhci_dbg_erst(xhci, &xhci->erst);
temp_64 = xhci_read_64(xhci, &xhci->ir_set->erst_dequeue);
temp_64 &= ~ERST_PTR_MASK;
xhci_dbg_trace(xhci, trace_xhci_dbg_init,
@@ -586,11 +583,7 @@ int xhci_run(struct usb_hcd *hcd)
"// Set the interrupt modulation register");
temp = readl(&xhci->ir_set->irq_control);
temp &= ~ER_IRQ_INTERVAL_MASK;
- /*
- * the increment interval is 8 times as much as that defined
- * in xHCI spec on MTK's controller
- */
- temp |= (u32) ((xhci->quirks & XHCI_MTK_HOST) ? 20 : 160);
+ temp |= (xhci->imod_interval / 250) & ER_IRQ_INTERVAL_MASK;
writel(temp, &xhci->ir_set->irq_control);
/* Set the HCD state before we enable the irqs */
@@ -605,12 +598,11 @@ int xhci_run(struct usb_hcd *hcd)
"// Enabling event ring interrupter %p by writing 0x%x to irq_pending",
xhci->ir_set, (unsigned int) ER_IRQ_ENABLE(temp));
writel(ER_IRQ_ENABLE(temp), &xhci->ir_set->irq_pending);
- xhci_print_ir_set(xhci, 0);
if (xhci->quirks & XHCI_NEC_HOST) {
struct xhci_command *command;
- command = xhci_alloc_command(xhci, false, false, GFP_KERNEL);
+ command = xhci_alloc_command(xhci, false, GFP_KERNEL);
if (!command)
return -ENOMEM;
@@ -622,6 +614,8 @@ int xhci_run(struct usb_hcd *hcd)
xhci_dbg_trace(xhci, trace_xhci_dbg_init,
"Finished xhci_run for USB2 roothub");
+ xhci_dbc_init(xhci);
+
xhci_debugfs_init(xhci);
return 0;
@@ -654,6 +648,8 @@ static void xhci_stop(struct usb_hcd *hcd)
xhci_debugfs_exit(xhci);
+ xhci_dbc_exit(xhci);
+
spin_lock_irq(&xhci->lock);
xhci->xhc_state |= XHCI_STATE_HALTED;
xhci->cmd_ring_state = CMD_RING_STATE_STOPPED;
@@ -681,7 +677,6 @@ static void xhci_stop(struct usb_hcd *hcd)
writel((temp & ~0x1fff) | STS_EINT, &xhci->op_regs->status);
temp = readl(&xhci->ir_set->irq_pending);
writel(ER_IRQ_DISABLE(temp), &xhci->ir_set->irq_pending);
- xhci_print_ir_set(xhci, 0);
xhci_dbg_trace(xhci, trace_xhci_dbg_init, "cleaning up memory");
xhci_mem_cleanup(xhci);
@@ -870,6 +865,8 @@ int xhci_suspend(struct xhci_hcd *xhci, bool do_wakeup)
xhci->shared_hcd->state != HC_STATE_SUSPENDED)
return -EINVAL;
+ xhci_dbc_suspend(xhci);
+
/* Clear root port wake on bits if wakeup not allowed. */
if (!do_wakeup)
xhci_disable_port_wake_on_bits(xhci);
@@ -1014,7 +1011,6 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated)
writel((temp & ~0x1fff) | STS_EINT, &xhci->op_regs->status);
temp = readl(&xhci->ir_set->irq_pending);
writel(ER_IRQ_DISABLE(temp), &xhci->ir_set->irq_pending);
- xhci_print_ir_set(xhci, 0);
xhci_dbg(xhci, "cleaning up memory\n");
xhci_mem_cleanup(xhci);
@@ -1065,6 +1061,8 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated)
spin_unlock_irq(&xhci->lock);
+ xhci_dbc_resume(xhci);
+
done:
if (retval == 0) {
/* Resume root hubs only when have pending events. */
@@ -1243,7 +1241,7 @@ static int xhci_check_maxpacket(struct xhci_hcd *xhci, unsigned int slot_id,
* changes max packet sizes.
*/
- command = xhci_alloc_command(xhci, false, true, GFP_KERNEL);
+ command = xhci_alloc_command(xhci, true, GFP_KERNEL);
if (!command)
return -ENOMEM;
@@ -1498,7 +1496,7 @@ static int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
* the first cancellation to be handled.
*/
if (!(ep->ep_state & EP_STOP_CMD_PENDING)) {
- command = xhci_alloc_command(xhci, false, false, GFP_ATOMIC);
+ command = xhci_alloc_command(xhci, false, GFP_ATOMIC);
if (!command) {
ret = -ENOMEM;
goto done;
@@ -2683,7 +2681,7 @@ static int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev)
xhci_dbg(xhci, "%s called for udev %p\n", __func__, udev);
virt_dev = xhci->devs[udev->slot_id];
- command = xhci_alloc_command(xhci, false, true, GFP_KERNEL);
+ command = xhci_alloc_command(xhci, true, GFP_KERNEL);
if (!command)
return -ENOMEM;
@@ -2838,12 +2836,10 @@ void xhci_cleanup_stalled_ring(struct xhci_hcd *xhci, unsigned int ep_index,
unsigned int stream_id, struct xhci_td *td)
{
struct xhci_dequeue_state deq_state;
- struct xhci_virt_ep *ep;
struct usb_device *udev = td->urb->dev;
xhci_dbg_trace(xhci, trace_xhci_dbg_reset_ep,
"Cleaning up stalled endpoint ring");
- ep = &xhci->devs[udev->slot_id]->eps[ep_index];
/* We need to move the HW's dequeue pointer past this TD,
* or it will attempt to resend it on the next doorbell ring.
*/
@@ -3092,7 +3088,7 @@ static int xhci_alloc_streams(struct usb_hcd *hcd, struct usb_device *udev,
return -ENOSYS;
}
- config_cmd = xhci_alloc_command(xhci, true, true, mem_flags);
+ config_cmd = xhci_alloc_command_with_ctx(xhci, true, mem_flags);
if (!config_cmd)
return -ENOMEM;
@@ -3363,7 +3359,6 @@ static int xhci_discover_or_reset_device(struct usb_hcd *hcd,
unsigned int slot_id;
struct xhci_virt_device *virt_dev;
struct xhci_command *reset_device_cmd;
- int last_freed_endpoint;
struct xhci_slot_ctx *slot_ctx;
int old_active_eps = 0;
@@ -3416,7 +3411,7 @@ static int xhci_discover_or_reset_device(struct usb_hcd *hcd,
* reset as part of error handling, so use GFP_NOIO instead of
* GFP_KERNEL.
*/
- reset_device_cmd = xhci_alloc_command(xhci, false, true, GFP_NOIO);
+ reset_device_cmd = xhci_alloc_command(xhci, true, GFP_NOIO);
if (!reset_device_cmd) {
xhci_dbg(xhci, "Couldn't allocate command structure.\n");
return -ENOMEM;
@@ -3478,7 +3473,6 @@ static int xhci_discover_or_reset_device(struct usb_hcd *hcd,
}
/* Everything but endpoint 0 is disabled, so free the rings. */
- last_freed_endpoint = 1;
for (i = 1; i < 31; i++) {
struct xhci_virt_ep *ep = &virt_dev->eps[i];
@@ -3493,7 +3487,6 @@ static int xhci_discover_or_reset_device(struct usb_hcd *hcd,
if (ep->ring) {
xhci_debugfs_remove_endpoint(xhci, virt_dev, i);
xhci_free_endpoint_ring(xhci, virt_dev, i);
- last_freed_endpoint = i;
}
if (!list_empty(&virt_dev->eps[i].bw_endpoint_list))
xhci_drop_ep_from_interval_table(xhci,
@@ -3525,8 +3518,6 @@ static void xhci_free_dev(struct usb_hcd *hcd, struct usb_device *udev)
struct xhci_slot_ctx *slot_ctx;
int i, ret;
- xhci_debugfs_remove_slot(xhci, udev->slot_id);
-
#ifndef CONFIG_USB_DEFAULT_PERSIST
/*
* We called pm_runtime_get_noresume when the device was attached.
@@ -3555,8 +3546,10 @@ static void xhci_free_dev(struct usb_hcd *hcd, struct usb_device *udev)
}
ret = xhci_disable_slot(xhci, udev->slot_id);
- if (ret)
+ if (ret) {
+ xhci_debugfs_remove_slot(xhci, udev->slot_id);
xhci_free_virt_device(xhci, udev->slot_id);
+ }
}
int xhci_disable_slot(struct xhci_hcd *xhci, u32 slot_id)
@@ -3566,7 +3559,7 @@ int xhci_disable_slot(struct xhci_hcd *xhci, u32 slot_id)
u32 state;
int ret = 0;
- command = xhci_alloc_command(xhci, false, false, GFP_KERNEL);
+ command = xhci_alloc_command(xhci, false, GFP_KERNEL);
if (!command)
return -ENOMEM;
@@ -3628,7 +3621,7 @@ int xhci_alloc_dev(struct usb_hcd *hcd, struct usb_device *udev)
int ret, slot_id;
struct xhci_command *command;
- command = xhci_alloc_command(xhci, false, true, GFP_KERNEL);
+ command = xhci_alloc_command(xhci, true, GFP_KERNEL);
if (!command)
return 0;
@@ -3761,7 +3754,7 @@ static int xhci_setup_device(struct usb_hcd *hcd, struct usb_device *udev,
}
}
- command = xhci_alloc_command(xhci, false, true, GFP_KERNEL);
+ command = xhci_alloc_command(xhci, true, GFP_KERNEL);
if (!command) {
ret = -ENOMEM;
goto out;
@@ -4680,7 +4673,7 @@ static int xhci_update_hub_device(struct usb_hcd *hcd, struct usb_device *hdev,
return -EINVAL;
}
- config_cmd = xhci_alloc_command(xhci, true, true, mem_flags);
+ config_cmd = xhci_alloc_command_with_ctx(xhci, true, mem_flags);
if (!config_cmd)
return -ENOMEM;
@@ -4828,7 +4821,6 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks)
xhci->hcc_params = readl(&xhci->cap_regs->hcc_params);
if (xhci->hci_version > 0x100)
xhci->hcc_params2 = readl(&xhci->cap_regs->hcc_params2);
- xhci_print_registers(xhci);
xhci->quirks |= quirks;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.