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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.c84
1 files changed, 51 insertions, 33 deletions
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index c939f5fdef9e..36641a7f2371 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -106,6 +106,9 @@ int xhci_halt(struct xhci_hcd *xhci)
STS_HALT, STS_HALT, XHCI_MAX_HALT_USEC);
if (!ret)
xhci->xhc_state |= XHCI_STATE_HALTED;
+ else
+ xhci_warn(xhci, "Host not halted after %u microseconds.\n",
+ XHCI_MAX_HALT_USEC);
return ret;
}
@@ -224,13 +227,13 @@ static void xhci_free_irq(struct xhci_hcd *xhci)
int ret;
/* return if using legacy interrupt */
- if (xhci_to_hcd(xhci)->irq >= 0)
+ if (xhci_to_hcd(xhci)->irq > 0)
return;
ret = xhci_free_msi(xhci);
if (!ret)
return;
- if (pdev->irq >= 0)
+ if (pdev->irq > 0)
free_irq(pdev->irq, xhci_to_hcd(xhci));
return;
@@ -341,7 +344,7 @@ static int xhci_try_enable_msi(struct usb_hcd *hcd)
/* unregister the legacy interrupt */
if (hcd->irq)
free_irq(hcd->irq, hcd);
- hcd->irq = -1;
+ hcd->irq = 0;
ret = xhci_setup_msix(xhci);
if (ret)
@@ -349,7 +352,7 @@ static int xhci_try_enable_msi(struct usb_hcd *hcd)
ret = xhci_setup_msi(xhci);
if (!ret)
- /* hcd->irq is -1, we have MSI */
+ /* hcd->irq is 0, we have MSI */
return 0;
if (!pdev->irq) {
@@ -664,11 +667,11 @@ static void xhci_save_registers(struct xhci_hcd *xhci)
xhci->s3.dev_nt = xhci_readl(xhci, &xhci->op_regs->dev_notification);
xhci->s3.dcbaa_ptr = xhci_read_64(xhci, &xhci->op_regs->dcbaa_ptr);
xhci->s3.config_reg = xhci_readl(xhci, &xhci->op_regs->config_reg);
- xhci->s3.irq_pending = xhci_readl(xhci, &xhci->ir_set->irq_pending);
- xhci->s3.irq_control = xhci_readl(xhci, &xhci->ir_set->irq_control);
xhci->s3.erst_size = xhci_readl(xhci, &xhci->ir_set->erst_size);
xhci->s3.erst_base = xhci_read_64(xhci, &xhci->ir_set->erst_base);
xhci->s3.erst_dequeue = xhci_read_64(xhci, &xhci->ir_set->erst_dequeue);
+ xhci->s3.irq_pending = xhci_readl(xhci, &xhci->ir_set->irq_pending);
+ xhci->s3.irq_control = xhci_readl(xhci, &xhci->ir_set->irq_control);
}
static void xhci_restore_registers(struct xhci_hcd *xhci)
@@ -677,10 +680,11 @@ static void xhci_restore_registers(struct xhci_hcd *xhci)
xhci_writel(xhci, xhci->s3.dev_nt, &xhci->op_regs->dev_notification);
xhci_write_64(xhci, xhci->s3.dcbaa_ptr, &xhci->op_regs->dcbaa_ptr);
xhci_writel(xhci, xhci->s3.config_reg, &xhci->op_regs->config_reg);
- xhci_writel(xhci, xhci->s3.irq_pending, &xhci->ir_set->irq_pending);
- xhci_writel(xhci, xhci->s3.irq_control, &xhci->ir_set->irq_control);
xhci_writel(xhci, xhci->s3.erst_size, &xhci->ir_set->erst_size);
xhci_write_64(xhci, xhci->s3.erst_base, &xhci->ir_set->erst_base);
+ xhci_write_64(xhci, xhci->s3.erst_dequeue, &xhci->ir_set->erst_dequeue);
+ xhci_writel(xhci, xhci->s3.irq_pending, &xhci->ir_set->irq_pending);
+ xhci_writel(xhci, xhci->s3.irq_control, &xhci->ir_set->irq_control);
}
static void xhci_set_cmd_ring_deq(struct xhci_hcd *xhci)
@@ -729,6 +733,7 @@ static void xhci_clear_command_ring(struct xhci_hcd *xhci)
ring->enq_seg = ring->deq_seg;
ring->enqueue = ring->dequeue;
+ ring->num_trbs_free = ring->num_segs * (TRBS_PER_SEGMENT - 1) - 1;
/*
* Ring is now zeroed, so the HW should look for change of ownership
* when the cycle bit is set to 1.
@@ -3614,26 +3619,38 @@ static int xhci_besl_encoding[16] = {125, 150, 200, 300, 400, 500, 1000, 2000,
3000, 4000, 5000, 6000, 7000, 8000, 9000, 10000};
/* Calculate HIRD/BESL for USB2 PORTPMSC*/
-static int xhci_calculate_hird_besl(int u2del, bool use_besl)
+static int xhci_calculate_hird_besl(struct xhci_hcd *xhci,
+ struct usb_device *udev)
{
- int hird;
+ int u2del, besl, besl_host;
+ int besl_device = 0;
+ u32 field;
+
+ u2del = HCS_U2_LATENCY(xhci->hcs_params3);
+ field = le32_to_cpu(udev->bos->ext_cap->bmAttributes);
- if (use_besl) {
- for (hird = 0; hird < 16; hird++) {
- if (xhci_besl_encoding[hird] >= u2del)
+ if (field & USB_BESL_SUPPORT) {
+ for (besl_host = 0; besl_host < 16; besl_host++) {
+ if (xhci_besl_encoding[besl_host] >= u2del)
break;
}
+ /* Use baseline BESL value as default */
+ if (field & USB_BESL_BASELINE_VALID)
+ besl_device = USB_GET_BESL_BASELINE(field);
+ else if (field & USB_BESL_DEEP_VALID)
+ besl_device = USB_GET_BESL_DEEP(field);
} else {
if (u2del <= 50)
- hird = 0;
+ besl_host = 0;
else
- hird = (u2del - 51) / 75 + 1;
-
- if (hird > 15)
- hird = 15;
+ besl_host = (u2del - 51) / 75 + 1;
}
- return hird;
+ besl = besl_host + besl_device;
+ if (besl > 15)
+ besl = 15;
+
+ return besl;
}
static int xhci_usb2_software_lpm_test(struct usb_hcd *hcd,
@@ -3646,7 +3663,7 @@ static int xhci_usb2_software_lpm_test(struct usb_hcd *hcd,
u32 temp, dev_id;
unsigned int port_num;
unsigned long flags;
- int u2del, hird;
+ int hird;
int ret;
if (hcd->speed == HCD_USB3 || !xhci->sw_lpm_support ||
@@ -3692,12 +3709,7 @@ static int xhci_usb2_software_lpm_test(struct usb_hcd *hcd,
* HIRD or BESL shoule be used. See USB2.0 LPM errata.
*/
pm_addr = port_array[port_num] + 1;
- u2del = HCS_U2_LATENCY(xhci->hcs_params3);
- if (le32_to_cpu(udev->bos->ext_cap->bmAttributes) & (1 << 2))
- hird = xhci_calculate_hird_besl(u2del, 1);
- else
- hird = xhci_calculate_hird_besl(u2del, 0);
-
+ hird = xhci_calculate_hird_besl(xhci, udev);
temp = PORT_L1DS(udev->slot_id) | PORT_HIRD(hird);
xhci_writel(xhci, temp, pm_addr);
@@ -3776,7 +3788,7 @@ int xhci_set_usb2_hardware_lpm(struct usb_hcd *hcd,
u32 temp;
unsigned int port_num;
unsigned long flags;
- int u2del, hird;
+ int hird;
if (hcd->speed == HCD_USB3 || !xhci->hw_lpm_support ||
!udev->lpm_capable)
@@ -3799,11 +3811,7 @@ int xhci_set_usb2_hardware_lpm(struct usb_hcd *hcd,
xhci_dbg(xhci, "%s port %d USB2 hardware LPM\n",
enable ? "enable" : "disable", port_num);
- u2del = HCS_U2_LATENCY(xhci->hcs_params3);
- if (le32_to_cpu(udev->bos->ext_cap->bmAttributes) & (1 << 2))
- hird = xhci_calculate_hird_besl(u2del, 1);
- else
- hird = xhci_calculate_hird_besl(u2del, 0);
+ hird = xhci_calculate_hird_besl(xhci, udev);
if (enable) {
temp &= ~PORT_HIRD_MASK;
@@ -3964,7 +3972,8 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks)
int retval;
u32 temp;
- hcd->self.sg_tablesize = TRBS_PER_SEGMENT - 2;
+ /* Accept arbitrarily long scatter-gather lists */
+ hcd->self.sg_tablesize = ~0;
if (usb_hcd_is_primary_hcd(hcd)) {
xhci = kzalloc(sizeof(struct xhci_hcd), GFP_KERNEL);
@@ -4059,6 +4068,11 @@ static int __init xhci_hcd_init(void)
printk(KERN_DEBUG "Problem registering PCI driver.");
return retval;
}
+ retval = xhci_register_plat();
+ if (retval < 0) {
+ printk(KERN_DEBUG "Problem registering platform driver.");
+ goto unreg_pci;
+ }
/*
* Check the compiler generated sizes of structures that must be laid
* out in specific ways for hardware access.
@@ -4078,11 +4092,15 @@ static int __init xhci_hcd_init(void)
BUILD_BUG_ON(sizeof(struct xhci_run_regs) != (8+8*128)*32/8);
BUILD_BUG_ON(sizeof(struct xhci_doorbell_array) != 256*32/8);
return 0;
+unreg_pci:
+ xhci_unregister_pci();
+ return retval;
}
module_init(xhci_hcd_init);
static void __exit xhci_hcd_cleanup(void)
{
xhci_unregister_pci();
+ xhci_unregister_plat();
}
module_exit(xhci_hcd_cleanup);
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-21 20:45:22 +0300