diff options
Diffstat (limited to 'drivers/usb/host/xhci.c')
| -rw-r--r-- | drivers/usb/host/xhci.c | 88 |
1 files changed, 66 insertions, 22 deletions
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 2b280beb0011..6307bae9cddf 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -9,6 +9,7 @@ */ #include <linux/pci.h> +#include <linux/iommu.h> #include <linux/iopoll.h> #include <linux/irq.h> #include <linux/log2.h> @@ -228,6 +229,7 @@ int xhci_reset(struct xhci_hcd *xhci, u64 timeout_us) static void xhci_zero_64b_regs(struct xhci_hcd *xhci) { struct device *dev = xhci_to_hcd(xhci)->self.sysdev; + struct iommu_domain *domain; int err, i; u64 val; u32 intrs; @@ -246,7 +248,9 @@ static void xhci_zero_64b_regs(struct xhci_hcd *xhci) * an iommu. Doing anything when there is no iommu is definitely * unsafe... */ - if (!(xhci->quirks & XHCI_ZERO_64B_REGS) || !device_iommu_mapped(dev)) + domain = iommu_get_domain_for_dev(dev); + if (!(xhci->quirks & XHCI_ZERO_64B_REGS) || !domain || + domain->type == IOMMU_DOMAIN_IDENTITY) return; xhci_info(xhci, "Zeroing 64bit base registers, expecting fault\n"); @@ -292,6 +296,32 @@ static void xhci_zero_64b_regs(struct xhci_hcd *xhci) xhci_info(xhci, "Fault detected\n"); } +static int xhci_enable_interrupter(struct xhci_interrupter *ir) +{ + u32 iman; + + if (!ir || !ir->ir_set) + return -EINVAL; + + iman = readl(&ir->ir_set->irq_pending); + writel(ER_IRQ_ENABLE(iman), &ir->ir_set->irq_pending); + + return 0; +} + +static int xhci_disable_interrupter(struct xhci_interrupter *ir) +{ + u32 iman; + + if (!ir || !ir->ir_set) + return -EINVAL; + + iman = readl(&ir->ir_set->irq_pending); + writel(ER_IRQ_DISABLE(iman), &ir->ir_set->irq_pending); + + return 0; +} + #ifdef CONFIG_USB_PCI /* * Set up MSI @@ -610,9 +640,9 @@ static int xhci_init(struct usb_hcd *hcd) /*-------------------------------------------------------------------------*/ - static int xhci_run_finished(struct xhci_hcd *xhci) { + struct xhci_interrupter *ir = xhci->interrupter; unsigned long flags; u32 temp; @@ -628,8 +658,7 @@ static int xhci_run_finished(struct xhci_hcd *xhci) writel(temp, &xhci->op_regs->command); xhci_dbg_trace(xhci, trace_xhci_dbg_init, "Enable primary interrupter"); - temp = readl(&xhci->ir_set->irq_pending); - writel(ER_IRQ_ENABLE(temp), &xhci->ir_set->irq_pending); + xhci_enable_interrupter(ir); if (xhci_start(xhci)) { xhci_halt(xhci); @@ -665,7 +694,7 @@ int xhci_run(struct usb_hcd *hcd) u64 temp_64; int ret; struct xhci_hcd *xhci = hcd_to_xhci(hcd); - + struct xhci_interrupter *ir = xhci->interrupter; /* Start the xHCI host controller running only after the USB 2.0 roothub * is setup. */ @@ -680,17 +709,17 @@ int xhci_run(struct usb_hcd *hcd) if (ret) return ret; - temp_64 = xhci_read_64(xhci, &xhci->ir_set->erst_dequeue); + temp_64 = xhci_read_64(xhci, &ir->ir_set->erst_dequeue); temp_64 &= ~ERST_PTR_MASK; xhci_dbg_trace(xhci, trace_xhci_dbg_init, "ERST deq = 64'h%0lx", (long unsigned int) temp_64); xhci_dbg_trace(xhci, trace_xhci_dbg_init, "// Set the interrupt modulation register"); - temp = readl(&xhci->ir_set->irq_control); + temp = readl(&ir->ir_set->irq_control); temp &= ~ER_IRQ_INTERVAL_MASK; temp |= (xhci->imod_interval / 250) & ER_IRQ_INTERVAL_MASK; - writel(temp, &xhci->ir_set->irq_control); + writel(temp, &ir->ir_set->irq_control); if (xhci->quirks & XHCI_NEC_HOST) { struct xhci_command *command; @@ -733,6 +762,7 @@ static void xhci_stop(struct usb_hcd *hcd) { u32 temp; struct xhci_hcd *xhci = hcd_to_xhci(hcd); + struct xhci_interrupter *ir = xhci->interrupter; mutex_lock(&xhci->mutex); @@ -769,8 +799,7 @@ static void xhci_stop(struct usb_hcd *hcd) "// Disabling event ring interrupts"); temp = readl(&xhci->op_regs->status); 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_disable_interrupter(ir); xhci_dbg_trace(xhci, trace_xhci_dbg_init, "cleaning up memory"); xhci_mem_cleanup(xhci); @@ -832,28 +861,36 @@ EXPORT_SYMBOL_GPL(xhci_shutdown); #ifdef CONFIG_PM static void xhci_save_registers(struct xhci_hcd *xhci) { + struct xhci_interrupter *ir = xhci->interrupter; + xhci->s3.command = readl(&xhci->op_regs->command); xhci->s3.dev_nt = readl(&xhci->op_regs->dev_notification); xhci->s3.dcbaa_ptr = xhci_read_64(xhci, &xhci->op_regs->dcbaa_ptr); xhci->s3.config_reg = readl(&xhci->op_regs->config_reg); - xhci->s3.erst_size = readl(&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 = readl(&xhci->ir_set->irq_pending); - xhci->s3.irq_control = readl(&xhci->ir_set->irq_control); + + if (!ir) + return; + + ir->s3_erst_size = readl(&ir->ir_set->erst_size); + ir->s3_erst_base = xhci_read_64(xhci, &ir->ir_set->erst_base); + ir->s3_erst_dequeue = xhci_read_64(xhci, &ir->ir_set->erst_dequeue); + ir->s3_irq_pending = readl(&ir->ir_set->irq_pending); + ir->s3_irq_control = readl(&ir->ir_set->irq_control); } static void xhci_restore_registers(struct xhci_hcd *xhci) { + struct xhci_interrupter *ir = xhci->interrupter; + writel(xhci->s3.command, &xhci->op_regs->command); writel(xhci->s3.dev_nt, &xhci->op_regs->dev_notification); xhci_write_64(xhci, xhci->s3.dcbaa_ptr, &xhci->op_regs->dcbaa_ptr); writel(xhci->s3.config_reg, &xhci->op_regs->config_reg); - writel(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); - writel(xhci->s3.irq_pending, &xhci->ir_set->irq_pending); - writel(xhci->s3.irq_control, &xhci->ir_set->irq_control); + writel(ir->s3_erst_size, &ir->ir_set->erst_size); + xhci_write_64(xhci, ir->s3_erst_base, &ir->ir_set->erst_base); + xhci_write_64(xhci, ir->s3_erst_dequeue, &ir->ir_set->erst_dequeue); + writel(ir->s3_irq_pending, &ir->ir_set->irq_pending); + writel(ir->s3_irq_control, &ir->ir_set->irq_control); } static void xhci_set_cmd_ring_deq(struct xhci_hcd *xhci) @@ -1218,8 +1255,7 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated) xhci_dbg(xhci, "// Disabling event ring interrupts\n"); temp = readl(&xhci->op_regs->status); 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_disable_interrupter(xhci->interrupter); xhci_dbg(xhci, "cleaning up memory\n"); xhci_mem_cleanup(xhci); @@ -4406,6 +4442,7 @@ static int __maybe_unused xhci_change_max_exit_latency(struct xhci_hcd *xhci, if (!virt_dev || max_exit_latency == virt_dev->current_mel) { spin_unlock_irqrestore(&xhci->lock, flags); + xhci_free_command(xhci, command); return 0; } @@ -5334,6 +5371,11 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks) if (xhci->hci_version > 0x100) xhci->hcc_params2 = readl(&xhci->cap_regs->hcc_params2); + /* xhci-plat or xhci-pci might have set max_interrupters already */ + if ((!xhci->max_interrupters) || + xhci->max_interrupters > HCS_MAX_INTRS(xhci->hcs_params1)) + xhci->max_interrupters = HCS_MAX_INTRS(xhci->hcs_params1); + xhci->quirks |= quirks; get_quirks(dev, xhci); @@ -5518,6 +5560,8 @@ void xhci_init_driver(struct hc_driver *drv, drv->reset_bandwidth = over->reset_bandwidth; if (over->update_hub_device) drv->update_hub_device = over->update_hub_device; + if (over->hub_control) + drv->hub_control = over->hub_control; } } EXPORT_SYMBOL_GPL(xhci_init_driver); |