diff options
Diffstat (limited to 'drivers/usb/host')
| -rw-r--r-- | drivers/usb/host/xhci-debugfs.c | 2 | ||||
| -rw-r--r-- | drivers/usb/host/xhci-mem.c | 168 | ||||
| -rw-r--r-- | drivers/usb/host/xhci-ring.c | 68 | ||||
| -rw-r--r-- | drivers/usb/host/xhci.c | 54 | ||||
| -rw-r--r-- | drivers/usb/host/xhci.h | 24 |
5 files changed, 196 insertions, 120 deletions
diff --git a/drivers/usb/host/xhci-debugfs.c b/drivers/usb/host/xhci-debugfs.c index dc832ddf7033..0bc7fe11f749 100644 --- a/drivers/usb/host/xhci-debugfs.c +++ b/drivers/usb/host/xhci-debugfs.c @@ -692,7 +692,7 @@ void xhci_debugfs_init(struct xhci_hcd *xhci) "command-ring", xhci->debugfs_root); - xhci_debugfs_create_ring_dir(xhci, &xhci->event_ring, + xhci_debugfs_create_ring_dir(xhci, &xhci->interrupter->event_ring, "event-ring", xhci->debugfs_root); diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index bf9bb29f924b..6b83c5c35cf8 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -1819,17 +1819,43 @@ int xhci_alloc_erst(struct xhci_hcd *xhci, return 0; } -void xhci_free_erst(struct xhci_hcd *xhci, struct xhci_erst *erst) +static void +xhci_free_interrupter(struct xhci_hcd *xhci, struct xhci_interrupter *ir) { - size_t size; struct device *dev = xhci_to_hcd(xhci)->self.sysdev; + size_t erst_size; + u64 tmp64; + u32 tmp; - size = sizeof(struct xhci_erst_entry) * (erst->num_entries); - if (erst->entries) - dma_free_coherent(dev, size, - erst->entries, - erst->erst_dma_addr); - erst->entries = NULL; + if (!ir) + return; + + erst_size = sizeof(struct xhci_erst_entry) * (ir->erst.num_entries); + if (ir->erst.entries) + dma_free_coherent(dev, erst_size, + ir->erst.entries, + ir->erst.erst_dma_addr); + ir->erst.entries = NULL; + + /* + * Clean out interrupter registers except ERSTBA. Clearing either the + * low or high 32 bits of ERSTBA immediately causes the controller to + * dereference the partially cleared 64 bit address, causing IOMMU error. + */ + tmp = readl(&ir->ir_set->erst_size); + tmp &= ERST_SIZE_MASK; + writel(tmp, &ir->ir_set->erst_size); + + tmp64 = xhci_read_64(xhci, &ir->ir_set->erst_dequeue); + tmp64 &= (u64) ERST_PTR_MASK; + xhci_write_64(xhci, tmp64, &ir->ir_set->erst_dequeue); + + /* free interrrupter event ring */ + if (ir->event_ring) + xhci_ring_free(xhci, ir->event_ring); + ir->event_ring = NULL; + + kfree(ir); } void xhci_mem_cleanup(struct xhci_hcd *xhci) @@ -1839,12 +1865,9 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci) cancel_delayed_work_sync(&xhci->cmd_timer); - xhci_free_erst(xhci, &xhci->erst); - - if (xhci->event_ring) - xhci_ring_free(xhci, xhci->event_ring); - xhci->event_ring = NULL; - xhci_dbg_trace(xhci, trace_xhci_dbg_init, "Freed event ring"); + xhci_free_interrupter(xhci, xhci->interrupter); + xhci->interrupter = NULL; + xhci_dbg_trace(xhci, trace_xhci_dbg_init, "Freed primary event ring"); if (xhci->cmd_ring) xhci_ring_free(xhci, xhci->cmd_ring); @@ -1929,18 +1952,18 @@ no_bw: xhci->usb3_rhub.bus_state.bus_suspended = 0; } -static void xhci_set_hc_event_deq(struct xhci_hcd *xhci) +static void xhci_set_hc_event_deq(struct xhci_hcd *xhci, struct xhci_interrupter *ir) { u64 temp; dma_addr_t deq; - deq = xhci_trb_virt_to_dma(xhci->event_ring->deq_seg, - xhci->event_ring->dequeue); + deq = xhci_trb_virt_to_dma(ir->event_ring->deq_seg, + ir->event_ring->dequeue); if (!deq) xhci_warn(xhci, "WARN something wrong with SW event ring " "dequeue ptr.\n"); /* Update HC event ring dequeue pointer */ - temp = xhci_read_64(xhci, &xhci->ir_set->erst_dequeue); + temp = xhci_read_64(xhci, &ir->ir_set->erst_dequeue); temp &= ERST_PTR_MASK; /* Don't clear the EHB bit (which is RW1C) because * there might be more events to service. @@ -1950,7 +1973,7 @@ static void xhci_set_hc_event_deq(struct xhci_hcd *xhci) "// Write event ring dequeue pointer, " "preserving EHB bit"); xhci_write_64(xhci, ((u64) deq & (u64) ~ERST_PTR_MASK) | temp, - &xhci->ir_set->erst_dequeue); + &ir->ir_set->erst_dequeue); } static void xhci_add_in_port(struct xhci_hcd *xhci, unsigned int num_ports, @@ -2217,6 +2240,68 @@ static int xhci_setup_port_arrays(struct xhci_hcd *xhci, gfp_t flags) return 0; } +static struct xhci_interrupter * +xhci_alloc_interrupter(struct xhci_hcd *xhci, unsigned int intr_num, gfp_t flags) +{ + struct device *dev = xhci_to_hcd(xhci)->self.sysdev; + struct xhci_interrupter *ir; + u64 erst_base; + u32 erst_size; + int ret; + + if (intr_num > xhci->max_interrupters) { + xhci_warn(xhci, "Can't allocate interrupter %d, max interrupters %d\n", + intr_num, xhci->max_interrupters); + return NULL; + } + + if (xhci->interrupter) { + xhci_warn(xhci, "Can't allocate already set up interrupter %d\n", intr_num); + return NULL; + } + + ir = kzalloc_node(sizeof(*ir), flags, dev_to_node(dev)); + if (!ir) + return NULL; + + ir->ir_set = &xhci->run_regs->ir_set[intr_num]; + ir->event_ring = xhci_ring_alloc(xhci, ERST_NUM_SEGS, 1, TYPE_EVENT, + 0, flags); + if (!ir->event_ring) { + xhci_warn(xhci, "Failed to allocate interrupter %d event ring\n", intr_num); + goto fail_ir; + } + + ret = xhci_alloc_erst(xhci, ir->event_ring, &ir->erst, flags); + if (ret) { + xhci_warn(xhci, "Failed to allocate interrupter %d erst\n", intr_num); + goto fail_ev; + + } + /* set ERST count with the number of entries in the segment table */ + erst_size = readl(&ir->ir_set->erst_size); + erst_size &= ERST_SIZE_MASK; + erst_size |= ERST_NUM_SEGS; + writel(erst_size, &ir->ir_set->erst_size); + + erst_base = xhci_read_64(xhci, &ir->ir_set->erst_base); + erst_base &= ERST_PTR_MASK; + erst_base |= (ir->erst.erst_dma_addr & (u64) ~ERST_PTR_MASK); + xhci_write_64(xhci, erst_base, &ir->ir_set->erst_base); + + /* Set the event ring dequeue address of this interrupter */ + xhci_set_hc_event_deq(xhci, ir); + + return ir; + +fail_ev: + xhci_ring_free(xhci, ir->event_ring); +fail_ir: + kfree(ir); + + return NULL; +} + int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) { dma_addr_t dma; @@ -2224,7 +2309,7 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) unsigned int val, val2; u64 val_64; u32 page_size, temp; - int i, ret; + int i; INIT_LIST_HEAD(&xhci->cmd_list); @@ -2337,46 +2422,13 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) " from cap regs base addr", val); xhci->dba = (void __iomem *) xhci->cap_regs + val; /* Set ir_set to interrupt register set 0 */ - xhci->ir_set = &xhci->run_regs->ir_set[0]; - - /* - * Event ring setup: Allocate a normal ring, but also setup - * the event ring segment table (ERST). Section 4.9.3. - */ - xhci_dbg_trace(xhci, trace_xhci_dbg_init, "// Allocating event ring"); - xhci->event_ring = xhci_ring_alloc(xhci, ERST_NUM_SEGS, 1, TYPE_EVENT, - 0, flags); - if (!xhci->event_ring) - goto fail; - - ret = xhci_alloc_erst(xhci, xhci->event_ring, &xhci->erst, flags); - if (ret) - goto fail; - - /* set ERST count with the number of entries in the segment table */ - val = readl(&xhci->ir_set->erst_size); - val &= ERST_SIZE_MASK; - val |= ERST_NUM_SEGS; - xhci_dbg_trace(xhci, trace_xhci_dbg_init, - "// Write ERST size = %i to ir_set 0 (some bits preserved)", - val); - writel(val, &xhci->ir_set->erst_size); + /* allocate and set up primary interrupter with an event ring. */ xhci_dbg_trace(xhci, trace_xhci_dbg_init, - "// Set ERST entries to point to event ring."); - /* set the segment table base address */ - xhci_dbg_trace(xhci, trace_xhci_dbg_init, - "// Set ERST base address for ir_set 0 = 0x%llx", - (unsigned long long)xhci->erst.erst_dma_addr); - val_64 = xhci_read_64(xhci, &xhci->ir_set->erst_base); - val_64 &= ERST_BASE_RSVDP; - val_64 |= (xhci->erst.erst_dma_addr & (u64) ~ERST_BASE_RSVDP); - xhci_write_64(xhci, val_64, &xhci->ir_set->erst_base); - - /* Set the event ring dequeue address */ - xhci_set_hc_event_deq(xhci); - xhci_dbg_trace(xhci, trace_xhci_dbg_init, - "Wrote ERST address to ir_set 0."); + "Allocating primary event ring"); + xhci->interrupter = xhci_alloc_interrupter(xhci, 0, flags); + if (!xhci->interrupter) + goto fail; xhci->isoc_bei_interval = AVOID_BEI_INTERVAL_MAX; diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 5f1ecdee2c1c..451d48b87cf7 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -1833,7 +1833,8 @@ static void xhci_cavium_reset_phy_quirk(struct xhci_hcd *xhci) } static void handle_port_status(struct xhci_hcd *xhci, - union xhci_trb *event) + struct xhci_interrupter *ir, + union xhci_trb *event) { struct usb_hcd *hcd; u32 port_id; @@ -1856,7 +1857,7 @@ static void handle_port_status(struct xhci_hcd *xhci, if ((port_id <= 0) || (port_id > max_ports)) { xhci_warn(xhci, "Port change event with invalid port ID %d\n", port_id); - inc_deq(xhci, xhci->event_ring); + inc_deq(xhci, ir->event_ring); return; } @@ -1986,7 +1987,7 @@ static void handle_port_status(struct xhci_hcd *xhci, cleanup: /* Update event ring dequeue pointer before dropping the lock */ - inc_deq(xhci, xhci->event_ring); + inc_deq(xhci, ir->event_ring); /* Don't make the USB core poll the roothub if we got a bad port status * change event. Besides, at that point we can't tell which roothub @@ -2519,7 +2520,8 @@ finish_td: * At this point, the host controller is probably hosed and should be reset. */ static int handle_tx_event(struct xhci_hcd *xhci, - struct xhci_transfer_event *event) + struct xhci_interrupter *ir, + struct xhci_transfer_event *event) { struct xhci_virt_ep *ep; struct xhci_ring *ep_ring; @@ -2868,7 +2870,7 @@ cleanup: * processing missed tds. */ if (!handling_skipped_tds) - inc_deq(xhci, xhci->event_ring); + inc_deq(xhci, ir->event_ring); /* * If ep->skip is set, it means there are missed tds on the @@ -2883,8 +2885,8 @@ cleanup: err_out: xhci_err(xhci, "@%016llx %08x %08x %08x %08x\n", (unsigned long long) xhci_trb_virt_to_dma( - xhci->event_ring->deq_seg, - xhci->event_ring->dequeue), + ir->event_ring->deq_seg, + ir->event_ring->dequeue), lower_32_bits(le64_to_cpu(event->buffer)), upper_32_bits(le64_to_cpu(event->buffer)), le32_to_cpu(event->transfer_len), @@ -2898,7 +2900,7 @@ err_out: * Returns >0 for "possibly more events to process" (caller should call again), * otherwise 0 if done. In future, <0 returns should indicate error code. */ -static int xhci_handle_event(struct xhci_hcd *xhci) +static int xhci_handle_event(struct xhci_hcd *xhci, struct xhci_interrupter *ir) { union xhci_trb *event; int update_ptrs = 1; @@ -2906,18 +2908,18 @@ static int xhci_handle_event(struct xhci_hcd *xhci) int ret; /* Event ring hasn't been allocated yet. */ - if (!xhci->event_ring || !xhci->event_ring->dequeue) { - xhci_err(xhci, "ERROR event ring not ready\n"); + if (!ir || !ir->event_ring || !ir->event_ring->dequeue) { + xhci_err(xhci, "ERROR interrupter not ready\n"); return -ENOMEM; } - event = xhci->event_ring->dequeue; + event = ir->event_ring->dequeue; /* Does the HC or OS own the TRB? */ if ((le32_to_cpu(event->event_cmd.flags) & TRB_CYCLE) != - xhci->event_ring->cycle_state) + ir->event_ring->cycle_state) return 0; - trace_xhci_handle_event(xhci->event_ring, &event->generic); + trace_xhci_handle_event(ir->event_ring, &event->generic); /* * Barrier between reading the TRB_CYCLE (valid) flag above and any @@ -2932,11 +2934,11 @@ static int xhci_handle_event(struct xhci_hcd *xhci) handle_cmd_completion(xhci, &event->event_cmd); break; case TRB_PORT_STATUS: - handle_port_status(xhci, event); + handle_port_status(xhci, ir, event); update_ptrs = 0; break; case TRB_TRANSFER: - ret = handle_tx_event(xhci, &event->trans_event); + ret = handle_tx_event(xhci, ir, &event->trans_event); if (ret >= 0) update_ptrs = 0; break; @@ -2960,7 +2962,7 @@ static int xhci_handle_event(struct xhci_hcd *xhci) if (update_ptrs) /* Update SW event ring dequeue pointer */ - inc_deq(xhci, xhci->event_ring); + inc_deq(xhci, ir->event_ring); /* Are there more items on the event ring? Caller will call us again to * check. @@ -2974,16 +2976,17 @@ static int xhci_handle_event(struct xhci_hcd *xhci) * - To avoid "Event Ring Full Error" condition */ static void xhci_update_erst_dequeue(struct xhci_hcd *xhci, - union xhci_trb *event_ring_deq) + struct xhci_interrupter *ir, + union xhci_trb *event_ring_deq) { u64 temp_64; dma_addr_t deq; - temp_64 = xhci_read_64(xhci, &xhci->ir_set->erst_dequeue); + temp_64 = xhci_read_64(xhci, &ir->ir_set->erst_dequeue); /* If necessary, update the HW's version of the event ring deq ptr. */ - if (event_ring_deq != xhci->event_ring->dequeue) { - deq = xhci_trb_virt_to_dma(xhci->event_ring->deq_seg, - xhci->event_ring->dequeue); + if (event_ring_deq != ir->event_ring->dequeue) { + deq = xhci_trb_virt_to_dma(ir->event_ring->deq_seg, + ir->event_ring->dequeue); if (deq == 0) xhci_warn(xhci, "WARN something wrong with SW event ring dequeue ptr\n"); /* @@ -3001,7 +3004,7 @@ static void xhci_update_erst_dequeue(struct xhci_hcd *xhci, /* Clear the event handler busy flag (RW1C) */ temp_64 |= ERST_EHB; - xhci_write_64(xhci, temp_64, &xhci->ir_set->erst_dequeue); + xhci_write_64(xhci, temp_64, &ir->ir_set->erst_dequeue); } /* @@ -3013,6 +3016,7 @@ irqreturn_t xhci_irq(struct usb_hcd *hcd) { struct xhci_hcd *xhci = hcd_to_xhci(hcd); union xhci_trb *event_ring_deq; + struct xhci_interrupter *ir; irqreturn_t ret = IRQ_NONE; u64 temp_64; u32 status; @@ -3050,11 +3054,13 @@ irqreturn_t xhci_irq(struct usb_hcd *hcd) status |= STS_EINT; writel(status, &xhci->op_regs->status); + /* This is the handler of the primary interrupter */ + ir = xhci->interrupter; if (!hcd->msi_enabled) { u32 irq_pending; - irq_pending = readl(&xhci->ir_set->irq_pending); + irq_pending = readl(&ir->ir_set->irq_pending); irq_pending |= IMAN_IP; - writel(irq_pending, &xhci->ir_set->irq_pending); + writel(irq_pending, &ir->ir_set->irq_pending); } if (xhci->xhc_state & XHCI_STATE_DYING || @@ -3064,22 +3070,22 @@ irqreturn_t xhci_irq(struct usb_hcd *hcd) /* Clear the event handler busy flag (RW1C); * the event ring should be empty. */ - temp_64 = xhci_read_64(xhci, &xhci->ir_set->erst_dequeue); + temp_64 = xhci_read_64(xhci, &ir->ir_set->erst_dequeue); xhci_write_64(xhci, temp_64 | ERST_EHB, - &xhci->ir_set->erst_dequeue); + &ir->ir_set->erst_dequeue); ret = IRQ_HANDLED; goto out; } - event_ring_deq = xhci->event_ring->dequeue; + event_ring_deq = ir->event_ring->dequeue; /* FIXME this should be a delayed service routine * that clears the EHB. */ - while (xhci_handle_event(xhci) > 0) { + while (xhci_handle_event(xhci, ir) > 0) { if (event_loop++ < TRBS_PER_SEGMENT / 2) continue; - xhci_update_erst_dequeue(xhci, event_ring_deq); - event_ring_deq = xhci->event_ring->dequeue; + xhci_update_erst_dequeue(xhci, ir, event_ring_deq); + event_ring_deq = ir->event_ring->dequeue; /* ring is half-full, force isoc trbs to interrupt more often */ if (xhci->isoc_bei_interval > AVOID_BEI_INTERVAL_MIN) @@ -3088,7 +3094,7 @@ irqreturn_t xhci_irq(struct usb_hcd *hcd) event_loop = 0; } - xhci_update_erst_dequeue(xhci, event_ring_deq); + xhci_update_erst_dequeue(xhci, ir, event_ring_deq); ret = IRQ_HANDLED; out: diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index f61fda4715cc..8dc3f2c00577 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -613,6 +613,7 @@ 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 +629,8 @@ 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); + temp = readl(&ir->ir_set->irq_pending); + writel(ER_IRQ_ENABLE(temp), &ir->ir_set->irq_pending); if (xhci_start(xhci)) { xhci_halt(xhci); @@ -665,7 +666,7 @@ 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 +681,17 @@ 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; @@ -769,8 +770,8 @@ 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); + temp = readl(&xhci->interrupter->ir_set->irq_pending); + writel(ER_IRQ_DISABLE(temp), &xhci->interrupter->ir_set->irq_pending); xhci_dbg_trace(xhci, trace_xhci_dbg_init, "cleaning up memory"); xhci_mem_cleanup(xhci); @@ -832,28 +833,36 @@ 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 +1227,8 @@ 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); + temp = readl(&xhci->interrupter->ir_set->irq_pending); + writel(ER_IRQ_DISABLE(temp), &xhci->interrupter->ir_set->irq_pending); xhci_dbg(xhci, "cleaning up memory\n"); xhci_mem_cleanup(xhci); @@ -5334,6 +5343,11 @@ 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); diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 0dd92f9089fe..95eb235d1f70 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1687,11 +1687,6 @@ struct s3_save { u32 dev_nt; u64 dcbaa_ptr; u32 config_reg; - u32 irq_pending; - u32 irq_control; - u32 erst_size; - u64 erst_base; - u64 erst_dequeue; }; /* Use for lpm */ @@ -1718,7 +1713,18 @@ struct xhci_bus_state { struct completion u3exit_done[USB_MAXCHILDREN]; }; - +struct xhci_interrupter { + struct xhci_ring *event_ring; + struct xhci_erst erst; + struct xhci_intr_reg __iomem *ir_set; + unsigned int intr_num; + /* For interrupter registers save and restore over suspend/resume */ + u32 s3_irq_pending; + u32 s3_irq_control; + u32 s3_erst_size; + u64 s3_erst_base; + u64 s3_erst_dequeue; +}; /* * It can take up to 20 ms to transition from RExit to U0 on the * Intel Lynx Point LP xHCI host. @@ -1761,8 +1767,6 @@ struct xhci_hcd { struct xhci_op_regs __iomem *op_regs; struct xhci_run_regs __iomem *run_regs; struct xhci_doorbell_array __iomem *dba; - /* Our HCD's current interrupter register set */ - struct xhci_intr_reg __iomem *ir_set; /* Cached register copies of read-only HC data */ __u32 hcs_params1; @@ -1797,6 +1801,7 @@ struct xhci_hcd { struct reset_control *reset; /* data structures */ struct xhci_device_context_array *dcbaa; + struct xhci_interrupter *interrupter; struct xhci_ring *cmd_ring; unsigned int cmd_ring_state; #define CMD_RING_STATE_RUNNING (1 << 0) @@ -1807,8 +1812,7 @@ struct xhci_hcd { struct delayed_work cmd_timer; struct completion cmd_ring_stop_completion; struct xhci_command *current_cmd; - struct xhci_ring *event_ring; - struct xhci_erst erst; + /* Scratchpad */ struct xhci_scratchpad *scratchpad; |