xhci-mem.c revision dfa49c4ad120a784ef1ff0717168aa79f55a483a
166d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp/* 266d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp * xHCI host controller driver 366d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp * 466d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp * Copyright (C) 2008 Intel Corp. 566d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp * 666d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp * Author: Sarah Sharp 766d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp * Some code borrowed from the Linux EHCI driver. 866d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp * 966d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp * This program is free software; you can redistribute it and/or modify 1066d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp * it under the terms of the GNU General Public License version 2 as 1166d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp * published by the Free Software Foundation. 1266d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp * 1366d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp * This program is distributed in the hope that it will be useful, but 1466d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 1566d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 1666d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp * for more details. 1766d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp * 1866d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp * You should have received a copy of the GNU General Public License 1966d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp * along with this program; if not, write to the Free Software Foundation, 2066d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp * Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 2166d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp */ 2266d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp 2366d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp#include <linux/usb.h> 240ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp#include <linux/pci.h> 255a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h> 26527c6d7f188f116852141f50b4d008f966bb17f8Sarah Sharp#include <linux/dmapool.h> 2766d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp 2866d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp#include "xhci.h" 2966d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp 300ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp/* 310ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * Allocates a generic ring segment from the ring pool, sets the dma address, 320ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * initializes the segment to zero, and sets the private next pointer to NULL. 330ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * 340ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * Section 4.11.1.1: 350ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * "All components of all Command and Transfer TRBs shall be initialized to '0'" 360ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp */ 370ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharpstatic struct xhci_segment *xhci_segment_alloc(struct xhci_hcd *xhci, gfp_t flags) 380ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp{ 390ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct xhci_segment *seg; 400ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp dma_addr_t dma; 410ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 420ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp seg = kzalloc(sizeof *seg, flags); 430ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (!seg) 44326b4810cc995209e31136af4202ed0414814ed5Randy Dunlap return NULL; 45700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "Allocating priv segment structure at %p\n", seg); 460ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 470ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp seg->trbs = dma_pool_alloc(xhci->segment_pool, flags, &dma); 480ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (!seg->trbs) { 490ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp kfree(seg); 50326b4810cc995209e31136af4202ed0414814ed5Randy Dunlap return NULL; 510ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp } 52700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "// Allocating segment at %p (virtual) 0x%llx (DMA)\n", 53700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman seg->trbs, (unsigned long long)dma); 540ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 550ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp memset(seg->trbs, 0, SEGMENT_SIZE); 560ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp seg->dma = dma; 570ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp seg->next = NULL; 580ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 590ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp return seg; 600ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp} 610ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 620ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharpstatic void xhci_segment_free(struct xhci_hcd *xhci, struct xhci_segment *seg) 630ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp{ 640ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (!seg) 650ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp return; 660ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (seg->trbs) { 67700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "Freeing DMA segment at %p (virtual) 0x%llx (DMA)\n", 68700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman seg->trbs, (unsigned long long)seg->dma); 690ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp dma_pool_free(xhci->segment_pool, seg->trbs, seg->dma); 700ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp seg->trbs = NULL; 710ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp } 72700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "Freeing priv segment structure at %p\n", seg); 730ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp kfree(seg); 740ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp} 750ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 760ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp/* 770ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * Make the prev segment point to the next segment. 780ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * 790ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * Change the last TRB in the prev segment to be a Link TRB which points to the 800ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * DMA address of the next segment. The caller needs to set any Link TRB 810ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * related flags, such as End TRB, Toggle Cycle, and no snoop. 820ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp */ 830ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharpstatic void xhci_link_segments(struct xhci_hcd *xhci, struct xhci_segment *prev, 840ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct xhci_segment *next, bool link_trbs) 850ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp{ 860ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp u32 val; 870ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 880ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (!prev || !next) 890ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp return; 900ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp prev->next = next; 910ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (link_trbs) { 928e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp prev->trbs[TRBS_PER_SEGMENT-1].link.segment_ptr = next->dma; 930ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 940ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* Set the last TRB in the segment to have a TRB type ID of Link TRB */ 950ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp val = prev->trbs[TRBS_PER_SEGMENT-1].link.control; 960ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp val &= ~TRB_TYPE_BITMASK; 970ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp val |= TRB_TYPE(TRB_LINK); 98b0567b3f635db72c881a0d561cebb544ec085073Sarah Sharp /* Always set the chain bit with 0.95 hardware */ 99b0567b3f635db72c881a0d561cebb544ec085073Sarah Sharp if (xhci_link_trb_quirk(xhci)) 100b0567b3f635db72c881a0d561cebb544ec085073Sarah Sharp val |= TRB_CHAIN; 1010ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp prev->trbs[TRBS_PER_SEGMENT-1].link.control = val; 1020ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp } 103700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "Linking segment 0x%llx to segment 0x%llx (DMA)\n", 104700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman (unsigned long long)prev->dma, 105700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman (unsigned long long)next->dma); 1060ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp} 1070ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 1080ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp/* XXX: Do we need the hcd structure in all these functions? */ 109f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharpvoid xhci_ring_free(struct xhci_hcd *xhci, struct xhci_ring *ring) 1100ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp{ 1110ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct xhci_segment *seg; 1120ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct xhci_segment *first_seg; 1130ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 1140ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (!ring || !ring->first_seg) 1150ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp return; 1160ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp first_seg = ring->first_seg; 1170ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp seg = first_seg->next; 118700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "Freeing ring at %p\n", ring); 1190ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp while (seg != first_seg) { 1200ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct xhci_segment *next = seg->next; 1210ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_segment_free(xhci, seg); 1220ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp seg = next; 1230ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp } 1240ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_segment_free(xhci, first_seg); 1250ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp ring->first_seg = NULL; 1260ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp kfree(ring); 1270ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp} 1280ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 12974f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharpstatic void xhci_initialize_ring_info(struct xhci_ring *ring) 13074f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp{ 13174f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp /* The ring is empty, so the enqueue pointer == dequeue pointer */ 13274f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp ring->enqueue = ring->first_seg->trbs; 13374f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp ring->enq_seg = ring->first_seg; 13474f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp ring->dequeue = ring->enqueue; 13574f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp ring->deq_seg = ring->first_seg; 13674f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp /* The ring is initialized to 0. The producer must write 1 to the cycle 13774f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp * bit to handover ownership of the TRB, so PCS = 1. The consumer must 13874f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp * compare CCS to the cycle bit to check ownership, so CCS = 1. 13974f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp */ 14074f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp ring->cycle_state = 1; 14174f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp /* Not necessary for new rings, but needed for re-initialized rings */ 14274f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp ring->enq_updates = 0; 14374f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp ring->deq_updates = 0; 14474f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp} 14574f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp 1460ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp/** 1470ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * Create a new ring with zero or more segments. 1480ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * 1490ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * Link each segment together into a ring. 1500ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * Set the end flag and the cycle toggle bit on the last segment. 1510ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * See section 4.9.1 and figures 15 and 16. 1520ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp */ 1530ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharpstatic struct xhci_ring *xhci_ring_alloc(struct xhci_hcd *xhci, 1540ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp unsigned int num_segs, bool link_trbs, gfp_t flags) 1550ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp{ 1560ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct xhci_ring *ring; 1570ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct xhci_segment *prev; 1580ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 1590ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp ring = kzalloc(sizeof *(ring), flags); 160700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "Allocating ring at %p\n", ring); 1610ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (!ring) 162326b4810cc995209e31136af4202ed0414814ed5Randy Dunlap return NULL; 1630ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 164d0e96f5a71a032ced0c35f521c1cbd67e816922aSarah Sharp INIT_LIST_HEAD(&ring->td_list); 1650ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (num_segs == 0) 1660ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp return ring; 1670ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 1680ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp ring->first_seg = xhci_segment_alloc(xhci, flags); 1690ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (!ring->first_seg) 1700ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp goto fail; 1710ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp num_segs--; 1720ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 1730ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp prev = ring->first_seg; 1740ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp while (num_segs > 0) { 1750ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct xhci_segment *next; 1760ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 1770ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp next = xhci_segment_alloc(xhci, flags); 1780ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (!next) 1790ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp goto fail; 1800ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_link_segments(xhci, prev, next, link_trbs); 1810ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 1820ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp prev = next; 1830ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp num_segs--; 1840ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp } 1850ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_link_segments(xhci, prev, ring->first_seg, link_trbs); 1860ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 1870ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (link_trbs) { 1880ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* See section 4.9.2.1 and 6.4.4.1 */ 1890ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp prev->trbs[TRBS_PER_SEGMENT-1].link.control |= (LINK_TOGGLE); 1900ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg(xhci, "Wrote link toggle flag to" 191700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman " segment %p (virtual), 0x%llx (DMA)\n", 192700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman prev, (unsigned long long)prev->dma); 1930ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp } 19474f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp xhci_initialize_ring_info(ring); 1950ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp return ring; 1960ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 1970ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharpfail: 1980ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_ring_free(xhci, ring); 199326b4810cc995209e31136af4202ed0414814ed5Randy Dunlap return NULL; 2000ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp} 2010ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 202412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharpvoid xhci_free_or_cache_endpoint_ring(struct xhci_hcd *xhci, 203412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp struct xhci_virt_device *virt_dev, 204412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp unsigned int ep_index) 205412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp{ 206412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp int rings_cached; 207412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp 208412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp rings_cached = virt_dev->num_rings_cached; 209412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp if (rings_cached < XHCI_MAX_RINGS_CACHED) { 210412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp virt_dev->num_rings_cached++; 211412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp rings_cached = virt_dev->num_rings_cached; 212412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp virt_dev->ring_cache[rings_cached] = 213412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp virt_dev->eps[ep_index].ring; 214412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp xhci_dbg(xhci, "Cached old ring, " 215412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp "%d ring%s cached\n", 216412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp rings_cached, 217412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp (rings_cached > 1) ? "s" : ""); 218412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp } else { 219412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp xhci_ring_free(xhci, virt_dev->eps[ep_index].ring); 220412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp xhci_dbg(xhci, "Ring cache full (%d rings), " 221412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp "freeing ring\n", 222412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp virt_dev->num_rings_cached); 223412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp } 224412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp virt_dev->eps[ep_index].ring = NULL; 225412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp} 226412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp 22774f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp/* Zero an endpoint ring (except for link TRBs) and move the enqueue and dequeue 22874f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp * pointers to the beginning of the ring. 22974f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp */ 23074f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharpstatic void xhci_reinit_cached_ring(struct xhci_hcd *xhci, 23174f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp struct xhci_ring *ring) 23274f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp{ 23374f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp struct xhci_segment *seg = ring->first_seg; 23474f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp do { 23574f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp memset(seg->trbs, 0, 23674f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp sizeof(union xhci_trb)*TRBS_PER_SEGMENT); 23774f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp /* All endpoint rings have link TRBs */ 23874f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp xhci_link_segments(xhci, seg, seg->next, 1); 23974f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp seg = seg->next; 24074f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp } while (seg != ring->first_seg); 24174f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp xhci_initialize_ring_info(ring); 24274f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp /* td list should be empty since all URBs have been cancelled, 24374f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp * but just in case... 24474f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp */ 24574f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp INIT_LIST_HEAD(&ring->td_list); 24674f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp} 24774f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp 248d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn#define CTX_SIZE(_hcc) (HCC_64BYTE_CONTEXT(_hcc) ? 64 : 32) 249d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn 250326b4810cc995209e31136af4202ed0414814ed5Randy Dunlapstatic struct xhci_container_ctx *xhci_alloc_container_ctx(struct xhci_hcd *xhci, 251d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn int type, gfp_t flags) 252d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn{ 253d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn struct xhci_container_ctx *ctx = kzalloc(sizeof(*ctx), flags); 254d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn if (!ctx) 255d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn return NULL; 256d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn 257d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn BUG_ON((type != XHCI_CTX_TYPE_DEVICE) && (type != XHCI_CTX_TYPE_INPUT)); 258d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn ctx->type = type; 259d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn ctx->size = HCC_64BYTE_CONTEXT(xhci->hcc_params) ? 2048 : 1024; 260d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn if (type == XHCI_CTX_TYPE_INPUT) 261d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn ctx->size += CTX_SIZE(xhci->hcc_params); 262d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn 263d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn ctx->bytes = dma_pool_alloc(xhci->device_pool, flags, &ctx->dma); 264d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn memset(ctx->bytes, 0, ctx->size); 265d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn return ctx; 266d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn} 267d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn 268326b4810cc995209e31136af4202ed0414814ed5Randy Dunlapstatic void xhci_free_container_ctx(struct xhci_hcd *xhci, 269d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn struct xhci_container_ctx *ctx) 270d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn{ 271a1d78c16bd31a715785e21967ac6110b386a3c1fSarah Sharp if (!ctx) 272a1d78c16bd31a715785e21967ac6110b386a3c1fSarah Sharp return; 273d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn dma_pool_free(xhci->device_pool, ctx->bytes, ctx->dma); 274d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn kfree(ctx); 275d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn} 276d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn 277d115b04818e57bdbc7ccde4d0660b15e33013dc8John Younstruct xhci_input_control_ctx *xhci_get_input_control_ctx(struct xhci_hcd *xhci, 278d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn struct xhci_container_ctx *ctx) 279d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn{ 280d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn BUG_ON(ctx->type != XHCI_CTX_TYPE_INPUT); 281d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn return (struct xhci_input_control_ctx *)ctx->bytes; 282d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn} 283d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn 284d115b04818e57bdbc7ccde4d0660b15e33013dc8John Younstruct xhci_slot_ctx *xhci_get_slot_ctx(struct xhci_hcd *xhci, 285d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn struct xhci_container_ctx *ctx) 286d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn{ 287d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn if (ctx->type == XHCI_CTX_TYPE_DEVICE) 288d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn return (struct xhci_slot_ctx *)ctx->bytes; 289d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn 290d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn return (struct xhci_slot_ctx *) 291d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn (ctx->bytes + CTX_SIZE(xhci->hcc_params)); 292d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn} 293d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn 294d115b04818e57bdbc7ccde4d0660b15e33013dc8John Younstruct xhci_ep_ctx *xhci_get_ep_ctx(struct xhci_hcd *xhci, 295d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn struct xhci_container_ctx *ctx, 296d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn unsigned int ep_index) 297d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn{ 298d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn /* increment ep index by offset of start of ep ctx array */ 299d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn ep_index++; 300d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn if (ctx->type == XHCI_CTX_TYPE_INPUT) 301d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn ep_index++; 302d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn 303d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn return (struct xhci_ep_ctx *) 304d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn (ctx->bytes + (ep_index * CTX_SIZE(xhci->hcc_params))); 305d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn} 306d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn 3078df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 3088df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp/***************** Streams structures manipulation *************************/ 3098df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 3108212a49d1c1e53ad2bc3176b983a2483b48fd989Dmitry Torokhovstatic void xhci_free_stream_ctx(struct xhci_hcd *xhci, 3118df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp unsigned int num_stream_ctxs, 3128df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp struct xhci_stream_ctx *stream_ctx, dma_addr_t dma) 3138df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp{ 3148df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp struct pci_dev *pdev = to_pci_dev(xhci_to_hcd(xhci)->self.controller); 3158df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 3168df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (num_stream_ctxs > MEDIUM_STREAM_ARRAY_SIZE) 3178df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp pci_free_consistent(pdev, 3188df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp sizeof(struct xhci_stream_ctx)*num_stream_ctxs, 3198df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_ctx, dma); 3208df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp else if (num_stream_ctxs <= SMALL_STREAM_ARRAY_SIZE) 3218df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp return dma_pool_free(xhci->small_streams_pool, 3228df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_ctx, dma); 3238df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp else 3248df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp return dma_pool_free(xhci->medium_streams_pool, 3258df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_ctx, dma); 3268df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp} 3278df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 3288df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp/* 3298df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * The stream context array for each endpoint with bulk streams enabled can 3308df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * vary in size, based on: 3318df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * - how many streams the endpoint supports, 3328df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * - the maximum primary stream array size the host controller supports, 3338df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * - and how many streams the device driver asks for. 3348df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * 3358df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * The stream context array must be a power of 2, and can be as small as 3368df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * 64 bytes or as large as 1MB. 3378df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp */ 3388212a49d1c1e53ad2bc3176b983a2483b48fd989Dmitry Torokhovstatic struct xhci_stream_ctx *xhci_alloc_stream_ctx(struct xhci_hcd *xhci, 3398df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp unsigned int num_stream_ctxs, dma_addr_t *dma, 3408df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp gfp_t mem_flags) 3418df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp{ 3428df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp struct pci_dev *pdev = to_pci_dev(xhci_to_hcd(xhci)->self.controller); 3438df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 3448df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (num_stream_ctxs > MEDIUM_STREAM_ARRAY_SIZE) 3458df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp return pci_alloc_consistent(pdev, 3468df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp sizeof(struct xhci_stream_ctx)*num_stream_ctxs, 3478df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp dma); 3488df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp else if (num_stream_ctxs <= SMALL_STREAM_ARRAY_SIZE) 3498df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp return dma_pool_alloc(xhci->small_streams_pool, 3508df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp mem_flags, dma); 3518df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp else 3528df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp return dma_pool_alloc(xhci->medium_streams_pool, 3538df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp mem_flags, dma); 3548df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp} 3558df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 356e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharpstruct xhci_ring *xhci_dma_to_transfer_ring( 357e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp struct xhci_virt_ep *ep, 358e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp u64 address) 359e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp{ 360e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp if (ep->ep_state & EP_HAS_STREAMS) 361e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp return radix_tree_lookup(&ep->stream_info->trb_address_map, 362e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp address >> SEGMENT_SHIFT); 363e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp return ep->ring; 364e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp} 365e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp 366e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp/* Only use this when you know stream_info is valid */ 3678df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp#ifdef CONFIG_USB_XHCI_HCD_DEBUGGING 368e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharpstatic struct xhci_ring *dma_to_stream_ring( 3698df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp struct xhci_stream_info *stream_info, 3708df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp u64 address) 3718df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp{ 3728df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp return radix_tree_lookup(&stream_info->trb_address_map, 3738df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp address >> SEGMENT_SHIFT); 3748df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp} 3758df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp#endif /* CONFIG_USB_XHCI_HCD_DEBUGGING */ 3768df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 377e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharpstruct xhci_ring *xhci_stream_id_to_ring( 378e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp struct xhci_virt_device *dev, 379e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp unsigned int ep_index, 380e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp unsigned int stream_id) 381e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp{ 382e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp struct xhci_virt_ep *ep = &dev->eps[ep_index]; 383e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp 384e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp if (stream_id == 0) 385e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp return ep->ring; 386e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp if (!ep->stream_info) 387e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp return NULL; 388e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp 389e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp if (stream_id > ep->stream_info->num_streams) 390e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp return NULL; 391e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp return ep->stream_info->stream_rings[stream_id]; 392e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp} 393e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp 3948df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp#ifdef CONFIG_USB_XHCI_HCD_DEBUGGING 3958df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharpstatic int xhci_test_radix_tree(struct xhci_hcd *xhci, 3968df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp unsigned int num_streams, 3978df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp struct xhci_stream_info *stream_info) 3988df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp{ 3998df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp u32 cur_stream; 4008df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp struct xhci_ring *cur_ring; 4018df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp u64 addr; 4028df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 4038df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp for (cur_stream = 1; cur_stream < num_streams; cur_stream++) { 4048df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp struct xhci_ring *mapped_ring; 4058df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp int trb_size = sizeof(union xhci_trb); 4068df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 4078df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp cur_ring = stream_info->stream_rings[cur_stream]; 4088df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp for (addr = cur_ring->first_seg->dma; 4098df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp addr < cur_ring->first_seg->dma + SEGMENT_SIZE; 4108df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp addr += trb_size) { 4118df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp mapped_ring = dma_to_stream_ring(stream_info, addr); 4128df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (cur_ring != mapped_ring) { 4138df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_warn(xhci, "WARN: DMA address 0x%08llx " 4148df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp "didn't map to stream ID %u; " 4158df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp "mapped to ring %p\n", 4168df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp (unsigned long long) addr, 4178df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp cur_stream, 4188df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp mapped_ring); 4198df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp return -EINVAL; 4208df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp } 4218df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp } 4228df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp /* One TRB after the end of the ring segment shouldn't return a 4238df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * pointer to the current ring (although it may be a part of a 4248df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * different ring). 4258df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp */ 4268df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp mapped_ring = dma_to_stream_ring(stream_info, addr); 4278df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (mapped_ring != cur_ring) { 4288df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp /* One TRB before should also fail */ 4298df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp addr = cur_ring->first_seg->dma - trb_size; 4308df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp mapped_ring = dma_to_stream_ring(stream_info, addr); 4318df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp } 4328df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (mapped_ring == cur_ring) { 4338df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_warn(xhci, "WARN: Bad DMA address 0x%08llx " 4348df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp "mapped to valid stream ID %u; " 4358df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp "mapped ring = %p\n", 4368df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp (unsigned long long) addr, 4378df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp cur_stream, 4388df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp mapped_ring); 4398df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp return -EINVAL; 4408df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp } 4418df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp } 4428df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp return 0; 4438df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp} 4448df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp#endif /* CONFIG_USB_XHCI_HCD_DEBUGGING */ 4458df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 4468df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp/* 4478df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * Change an endpoint's internal structure so it supports stream IDs. The 4488df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * number of requested streams includes stream 0, which cannot be used by device 4498df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * drivers. 4508df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * 4518df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * The number of stream contexts in the stream context array may be bigger than 4528df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * the number of streams the driver wants to use. This is because the number of 4538df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * stream context array entries must be a power of two. 4548df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * 4558df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * We need a radix tree for mapping physical addresses of TRBs to which stream 4568df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * ID they belong to. We need to do this because the host controller won't tell 4578df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * us which stream ring the TRB came from. We could store the stream ID in an 4588df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * event data TRB, but that doesn't help us for the cancellation case, since the 4598df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * endpoint may stop before it reaches that event data TRB. 4608df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * 4618df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * The radix tree maps the upper portion of the TRB DMA address to a ring 4628df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * segment that has the same upper portion of DMA addresses. For example, say I 4638df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * have segments of size 1KB, that are always 64-byte aligned. A segment may 4648df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * start at 0x10c91000 and end at 0x10c913f0. If I use the upper 10 bits, the 4658df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * key to the stream ID is 0x43244. I can use the DMA address of the TRB to 4668df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * pass the radix tree a key to get the right stream ID: 4678df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * 4688df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * 0x10c90fff >> 10 = 0x43243 4698df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * 0x10c912c0 >> 10 = 0x43244 4708df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * 0x10c91400 >> 10 = 0x43245 4718df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * 4728df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * Obviously, only those TRBs with DMA addresses that are within the segment 4738df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * will make the radix tree return the stream ID for that ring. 4748df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * 4758df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * Caveats for the radix tree: 4768df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * 4778df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * The radix tree uses an unsigned long as a key pair. On 32-bit systems, an 4788df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * unsigned long will be 32-bits; on a 64-bit system an unsigned long will be 4798df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * 64-bits. Since we only request 32-bit DMA addresses, we can use that as the 4808df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * key on 32-bit or 64-bit systems (it would also be fine if we asked for 64-bit 4818df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * PCI DMA addresses on a 64-bit system). There might be a problem on 32-bit 4828df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * extended systems (where the DMA address can be bigger than 32-bits), 4838df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * if we allow the PCI dma mask to be bigger than 32-bits. So don't do that. 4848df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp */ 4858df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharpstruct xhci_stream_info *xhci_alloc_stream_info(struct xhci_hcd *xhci, 4868df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp unsigned int num_stream_ctxs, 4878df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp unsigned int num_streams, gfp_t mem_flags) 4888df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp{ 4898df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp struct xhci_stream_info *stream_info; 4908df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp u32 cur_stream; 4918df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp struct xhci_ring *cur_ring; 4928df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp unsigned long key; 4938df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp u64 addr; 4948df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp int ret; 4958df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 4968df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_dbg(xhci, "Allocating %u streams and %u " 4978df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp "stream context array entries.\n", 4988df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp num_streams, num_stream_ctxs); 4998df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (xhci->cmd_ring_reserved_trbs == MAX_RSVD_CMD_TRBS) { 5008df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_dbg(xhci, "Command ring has no reserved TRBs available\n"); 5018df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp return NULL; 5028df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp } 5038df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci->cmd_ring_reserved_trbs++; 5048df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 5058df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_info = kzalloc(sizeof(struct xhci_stream_info), mem_flags); 5068df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (!stream_info) 5078df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp goto cleanup_trbs; 5088df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 5098df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_info->num_streams = num_streams; 5108df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_info->num_stream_ctxs = num_stream_ctxs; 5118df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 5128df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp /* Initialize the array of virtual pointers to stream rings. */ 5138df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_info->stream_rings = kzalloc( 5148df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp sizeof(struct xhci_ring *)*num_streams, 5158df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp mem_flags); 5168df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (!stream_info->stream_rings) 5178df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp goto cleanup_info; 5188df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 5198df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp /* Initialize the array of DMA addresses for stream rings for the HW. */ 5208df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_info->stream_ctx_array = xhci_alloc_stream_ctx(xhci, 5218df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp num_stream_ctxs, &stream_info->ctx_array_dma, 5228df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp mem_flags); 5238df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (!stream_info->stream_ctx_array) 5248df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp goto cleanup_ctx; 5258df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp memset(stream_info->stream_ctx_array, 0, 5268df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp sizeof(struct xhci_stream_ctx)*num_stream_ctxs); 5278df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 5288df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp /* Allocate everything needed to free the stream rings later */ 5298df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_info->free_streams_command = 5308df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_alloc_command(xhci, true, true, mem_flags); 5318df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (!stream_info->free_streams_command) 5328df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp goto cleanup_ctx; 5338df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 5348df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp INIT_RADIX_TREE(&stream_info->trb_address_map, GFP_ATOMIC); 5358df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 5368df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp /* Allocate rings for all the streams that the driver will use, 5378df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * and add their segment DMA addresses to the radix tree. 5388df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * Stream 0 is reserved. 5398df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp */ 5408df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp for (cur_stream = 1; cur_stream < num_streams; cur_stream++) { 5418df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_info->stream_rings[cur_stream] = 5428df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_ring_alloc(xhci, 1, true, mem_flags); 5438df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp cur_ring = stream_info->stream_rings[cur_stream]; 5448df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (!cur_ring) 5458df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp goto cleanup_rings; 546e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp cur_ring->stream_id = cur_stream; 5478df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp /* Set deq ptr, cycle bit, and stream context type */ 5488df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp addr = cur_ring->first_seg->dma | 5498df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp SCT_FOR_CTX(SCT_PRI_TR) | 5508df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp cur_ring->cycle_state; 5518df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_info->stream_ctx_array[cur_stream].stream_ring = addr; 5528df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_dbg(xhci, "Setting stream %d ring ptr to 0x%08llx\n", 5538df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp cur_stream, (unsigned long long) addr); 5548df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 5558df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp key = (unsigned long) 5568df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp (cur_ring->first_seg->dma >> SEGMENT_SHIFT); 5578df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp ret = radix_tree_insert(&stream_info->trb_address_map, 5588df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp key, cur_ring); 5598df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (ret) { 5608df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_ring_free(xhci, cur_ring); 5618df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_info->stream_rings[cur_stream] = NULL; 5628df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp goto cleanup_rings; 5638df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp } 5648df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp } 5658df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp /* Leave the other unused stream ring pointers in the stream context 5668df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * array initialized to zero. This will cause the xHC to give us an 5678df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * error if the device asks for a stream ID we don't have setup (if it 5688df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * was any other way, the host controller would assume the ring is 5698df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * "empty" and wait forever for data to be queued to that stream ID). 5708df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp */ 5718df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp#if XHCI_DEBUG 5728df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp /* Do a little test on the radix tree to make sure it returns the 5738df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * correct values. 5748df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp */ 5758df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (xhci_test_radix_tree(xhci, num_streams, stream_info)) 5768df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp goto cleanup_rings; 5778df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp#endif 5788df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 5798df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp return stream_info; 5808df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 5818df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharpcleanup_rings: 5828df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp for (cur_stream = 1; cur_stream < num_streams; cur_stream++) { 5838df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp cur_ring = stream_info->stream_rings[cur_stream]; 5848df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (cur_ring) { 5858df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp addr = cur_ring->first_seg->dma; 5868df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp radix_tree_delete(&stream_info->trb_address_map, 5878df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp addr >> SEGMENT_SHIFT); 5888df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_ring_free(xhci, cur_ring); 5898df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_info->stream_rings[cur_stream] = NULL; 5908df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp } 5918df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp } 5928df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_free_command(xhci, stream_info->free_streams_command); 5938df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharpcleanup_ctx: 5948df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp kfree(stream_info->stream_rings); 5958df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharpcleanup_info: 5968df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp kfree(stream_info); 5978df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharpcleanup_trbs: 5988df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci->cmd_ring_reserved_trbs--; 5998df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp return NULL; 6008df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp} 6018df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp/* 6028df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * Sets the MaxPStreams field and the Linear Stream Array field. 6038df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * Sets the dequeue pointer to the stream context array. 6048df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp */ 6058df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharpvoid xhci_setup_streams_ep_input_ctx(struct xhci_hcd *xhci, 6068df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp struct xhci_ep_ctx *ep_ctx, 6078df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp struct xhci_stream_info *stream_info) 6088df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp{ 6098df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp u32 max_primary_streams; 6108df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp /* MaxPStreams is the number of stream context array entries, not the 6118df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * number we're actually using. Must be in 2^(MaxPstreams + 1) format. 6128df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * fls(0) = 0, fls(0x1) = 1, fls(0x10) = 2, fls(0x100) = 3, etc. 6138df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp */ 6148df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp max_primary_streams = fls(stream_info->num_stream_ctxs) - 2; 6158df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_dbg(xhci, "Setting number of stream ctx array entries to %u\n", 6168df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 1 << (max_primary_streams + 1)); 6178df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp ep_ctx->ep_info &= ~EP_MAXPSTREAMS_MASK; 6188df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp ep_ctx->ep_info |= EP_MAXPSTREAMS(max_primary_streams); 6198df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp ep_ctx->ep_info |= EP_HAS_LSA; 6208df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp ep_ctx->deq = stream_info->ctx_array_dma; 6218df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp} 6228df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 6238df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp/* 6248df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * Sets the MaxPStreams field and the Linear Stream Array field to 0. 6258df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * Reinstalls the "normal" endpoint ring (at its previous dequeue mark, 6268df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * not at the beginning of the ring). 6278df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp */ 6288df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharpvoid xhci_setup_no_streams_ep_input_ctx(struct xhci_hcd *xhci, 6298df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp struct xhci_ep_ctx *ep_ctx, 6308df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp struct xhci_virt_ep *ep) 6318df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp{ 6328df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp dma_addr_t addr; 6338df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp ep_ctx->ep_info &= ~EP_MAXPSTREAMS_MASK; 6348df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp ep_ctx->ep_info &= ~EP_HAS_LSA; 6358df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp addr = xhci_trb_virt_to_dma(ep->ring->deq_seg, ep->ring->dequeue); 6368df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp ep_ctx->deq = addr | ep->ring->cycle_state; 6378df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp} 6388df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 6398df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp/* Frees all stream contexts associated with the endpoint, 6408df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * 6418df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * Caller should fix the endpoint context streams fields. 6428df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp */ 6438df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharpvoid xhci_free_stream_info(struct xhci_hcd *xhci, 6448df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp struct xhci_stream_info *stream_info) 6458df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp{ 6468df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp int cur_stream; 6478df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp struct xhci_ring *cur_ring; 6488df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp dma_addr_t addr; 6498df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 6508df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (!stream_info) 6518df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp return; 6528df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 6538df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp for (cur_stream = 1; cur_stream < stream_info->num_streams; 6548df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp cur_stream++) { 6558df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp cur_ring = stream_info->stream_rings[cur_stream]; 6568df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (cur_ring) { 6578df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp addr = cur_ring->first_seg->dma; 6588df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp radix_tree_delete(&stream_info->trb_address_map, 6598df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp addr >> SEGMENT_SHIFT); 6608df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_ring_free(xhci, cur_ring); 6618df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_info->stream_rings[cur_stream] = NULL; 6628df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp } 6638df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp } 6648df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_free_command(xhci, stream_info->free_streams_command); 6658df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci->cmd_ring_reserved_trbs--; 6668df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (stream_info->stream_ctx_array) 6678df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_free_stream_ctx(xhci, 6688df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_info->num_stream_ctxs, 6698df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_info->stream_ctx_array, 6708df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_info->ctx_array_dma); 6718df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 6728df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (stream_info) 6738df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp kfree(stream_info->stream_rings); 6748df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp kfree(stream_info); 6758df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp} 6768df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 6778df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 6788df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp/***************** Device context manipulation *************************/ 6798df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 6806f5165cf989387e84ef23122330b27cca1cbe831Sarah Sharpstatic void xhci_init_endpoint_timer(struct xhci_hcd *xhci, 6816f5165cf989387e84ef23122330b27cca1cbe831Sarah Sharp struct xhci_virt_ep *ep) 6826f5165cf989387e84ef23122330b27cca1cbe831Sarah Sharp{ 6836f5165cf989387e84ef23122330b27cca1cbe831Sarah Sharp init_timer(&ep->stop_cmd_timer); 6846f5165cf989387e84ef23122330b27cca1cbe831Sarah Sharp ep->stop_cmd_timer.data = (unsigned long) ep; 6856f5165cf989387e84ef23122330b27cca1cbe831Sarah Sharp ep->stop_cmd_timer.function = xhci_stop_endpoint_command_watchdog; 6866f5165cf989387e84ef23122330b27cca1cbe831Sarah Sharp ep->xhci = xhci; 6876f5165cf989387e84ef23122330b27cca1cbe831Sarah Sharp} 6886f5165cf989387e84ef23122330b27cca1cbe831Sarah Sharp 689d0e96f5a71a032ced0c35f521c1cbd67e816922aSarah Sharp/* All the xhci_tds in the ring's TD list should be freed at this point */ 6903ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharpvoid xhci_free_virt_device(struct xhci_hcd *xhci, int slot_id) 6913ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp{ 6923ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp struct xhci_virt_device *dev; 6933ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp int i; 6943ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 6953ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Slot ID 0 is reserved */ 6963ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (slot_id == 0 || !xhci->devs[slot_id]) 6973ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp return; 6983ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 6993ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dev = xhci->devs[slot_id]; 7008e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp xhci->dcbaa->dev_context_ptrs[slot_id] = 0; 7013ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (!dev) 7023ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp return; 7033ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 7048df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp for (i = 0; i < 31; ++i) { 70563a0d9abd18cdcf5a985029c266c6bfe0511768fSarah Sharp if (dev->eps[i].ring) 70663a0d9abd18cdcf5a985029c266c6bfe0511768fSarah Sharp xhci_ring_free(xhci, dev->eps[i].ring); 7078df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (dev->eps[i].stream_info) 7088df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_free_stream_info(xhci, 7098df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp dev->eps[i].stream_info); 7108df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp } 7113ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 71274f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp if (dev->ring_cache) { 71374f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp for (i = 0; i < dev->num_rings_cached; i++) 71474f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp xhci_ring_free(xhci, dev->ring_cache[i]); 71574f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp kfree(dev->ring_cache); 71674f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp } 71774f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp 7183ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (dev->in_ctx) 719d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn xhci_free_container_ctx(xhci, dev->in_ctx); 7203ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (dev->out_ctx) 721d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn xhci_free_container_ctx(xhci, dev->out_ctx); 722d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn 7233ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp kfree(xhci->devs[slot_id]); 724326b4810cc995209e31136af4202ed0414814ed5Randy Dunlap xhci->devs[slot_id] = NULL; 7253ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp} 7263ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 7273ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharpint xhci_alloc_virt_device(struct xhci_hcd *xhci, int slot_id, 7283ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp struct usb_device *udev, gfp_t flags) 7293ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp{ 7303ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp struct xhci_virt_device *dev; 73163a0d9abd18cdcf5a985029c266c6bfe0511768fSarah Sharp int i; 7323ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 7333ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Slot ID 0 is reserved */ 7343ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (slot_id == 0 || xhci->devs[slot_id]) { 7353ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci_warn(xhci, "Bad Slot ID %d\n", slot_id); 7363ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp return 0; 7373ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp } 7383ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 7393ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci->devs[slot_id] = kzalloc(sizeof(*xhci->devs[slot_id]), flags); 7403ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (!xhci->devs[slot_id]) 7413ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp return 0; 7423ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dev = xhci->devs[slot_id]; 7433ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 744d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn /* Allocate the (output) device context that will be used in the HC. */ 745d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn dev->out_ctx = xhci_alloc_container_ctx(xhci, XHCI_CTX_TYPE_DEVICE, flags); 7463ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (!dev->out_ctx) 7473ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp goto fail; 748d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn 749700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "Slot %d output ctx = 0x%llx (dma)\n", slot_id, 750d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn (unsigned long long)dev->out_ctx->dma); 7513ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 7523ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Allocate the (input) device context for address device command */ 753d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn dev->in_ctx = xhci_alloc_container_ctx(xhci, XHCI_CTX_TYPE_INPUT, flags); 7543ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (!dev->in_ctx) 7553ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp goto fail; 756d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn 757700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "Slot %d input ctx = 0x%llx (dma)\n", slot_id, 758d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn (unsigned long long)dev->in_ctx->dma); 7593ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 7606f5165cf989387e84ef23122330b27cca1cbe831Sarah Sharp /* Initialize the cancellation list and watchdog timers for each ep */ 7616f5165cf989387e84ef23122330b27cca1cbe831Sarah Sharp for (i = 0; i < 31; i++) { 7626f5165cf989387e84ef23122330b27cca1cbe831Sarah Sharp xhci_init_endpoint_timer(xhci, &dev->eps[i]); 76363a0d9abd18cdcf5a985029c266c6bfe0511768fSarah Sharp INIT_LIST_HEAD(&dev->eps[i].cancelled_td_list); 7646f5165cf989387e84ef23122330b27cca1cbe831Sarah Sharp } 76563a0d9abd18cdcf5a985029c266c6bfe0511768fSarah Sharp 7663ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Allocate endpoint 0 ring */ 76763a0d9abd18cdcf5a985029c266c6bfe0511768fSarah Sharp dev->eps[0].ring = xhci_ring_alloc(xhci, 1, true, flags); 76863a0d9abd18cdcf5a985029c266c6bfe0511768fSarah Sharp if (!dev->eps[0].ring) 7693ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp goto fail; 7703ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 77174f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp /* Allocate pointers to the ring cache */ 77274f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp dev->ring_cache = kzalloc( 77374f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp sizeof(struct xhci_ring *)*XHCI_MAX_RINGS_CACHED, 77474f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp flags); 77574f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp if (!dev->ring_cache) 77674f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp goto fail; 77774f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp dev->num_rings_cached = 0; 77874f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp 779f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp init_completion(&dev->cmd_completion); 780913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp INIT_LIST_HEAD(&dev->cmd_list); 78164927730c66333c9d5987aa72a0e6d44ed91cec7Andiry Xu dev->udev = udev; 782f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 78328c2d2efb48dec2f0b050affae6d5787d6449e47Sarah Sharp /* Point to output device context in dcbaa. */ 784d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn xhci->dcbaa->dev_context_ptrs[slot_id] = dev->out_ctx->dma; 785700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "Set slot id %d dcbaa entry %p to 0x%llx\n", 7863ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp slot_id, 7878e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp &xhci->dcbaa->dev_context_ptrs[slot_id], 78828c2d2efb48dec2f0b050affae6d5787d6449e47Sarah Sharp (unsigned long long) xhci->dcbaa->dev_context_ptrs[slot_id]); 7893ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 7903ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp return 1; 7913ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharpfail: 7923ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci_free_virt_device(xhci, slot_id); 7933ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp return 0; 7943ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp} 7953ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 7962d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharpvoid xhci_copy_ep0_dequeue_into_input_ctx(struct xhci_hcd *xhci, 7972d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp struct usb_device *udev) 7982d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp{ 7992d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp struct xhci_virt_device *virt_dev; 8002d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp struct xhci_ep_ctx *ep0_ctx; 8012d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp struct xhci_ring *ep_ring; 8022d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp 8032d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp virt_dev = xhci->devs[udev->slot_id]; 8042d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp ep0_ctx = xhci_get_ep_ctx(xhci, virt_dev->in_ctx, 0); 8052d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp ep_ring = virt_dev->eps[0].ring; 8062d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp /* 8072d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp * FIXME we don't keep track of the dequeue pointer very well after a 8082d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp * Set TR dequeue pointer, so we're setting the dequeue pointer of the 8092d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp * host to our enqueue pointer. This should only be called after a 8102d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp * configured device has reset, so all control transfers should have 8112d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp * been completed or cancelled before the reset. 8122d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp */ 8132d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp ep0_ctx->deq = xhci_trb_virt_to_dma(ep_ring->enq_seg, ep_ring->enqueue); 8142d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp ep0_ctx->deq |= ep_ring->cycle_state; 8152d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp} 8162d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp 817f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp/* 818f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp * The xHCI roothub may have ports of differing speeds in any order in the port 819f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp * status registers. xhci->port_array provides an array of the port speed for 820f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp * each offset into the port status registers. 821f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp * 822f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp * The xHCI hardware wants to know the roothub port number that the USB device 823f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp * is attached to (or the roothub port its ancestor hub is attached to). All we 824f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp * know is the index of that port under either the USB 2.0 or the USB 3.0 825f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp * roothub, but that doesn't give us the real index into the HW port status 826f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp * registers. Scan through the xHCI roothub port array, looking for the Nth 827f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp * entry of the correct port speed. Return the port number of that entry. 828f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp */ 829f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharpstatic u32 xhci_find_real_port_number(struct xhci_hcd *xhci, 830f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp struct usb_device *udev) 831f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp{ 832f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp struct usb_device *top_dev; 833f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp unsigned int num_similar_speed_ports; 834f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp unsigned int faked_port_num; 835f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp int i; 836f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp 837f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp for (top_dev = udev; top_dev->parent && top_dev->parent->parent; 838f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp top_dev = top_dev->parent) 839f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp /* Found device below root hub */; 840f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp faked_port_num = top_dev->portnum; 841f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp for (i = 0, num_similar_speed_ports = 0; 842f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp i < HCS_MAX_PORTS(xhci->hcs_params1); i++) { 843f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp u8 port_speed = xhci->port_array[i]; 844f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp 845f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp /* 846f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp * Skip ports that don't have known speeds, or have duplicate 847f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp * Extended Capabilities port speed entries. 848f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp */ 84922e0487047567252d5677ff35766cd884375efc2Dan Carpenter if (port_speed == 0 || port_speed == DUPLICATE_ENTRY) 850f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp continue; 851f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp 852f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp /* 853f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp * USB 3.0 ports are always under a USB 3.0 hub. USB 2.0 and 854f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp * 1.1 ports are under the USB 2.0 hub. If the port speed 855f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp * matches the device speed, it's a similar speed port. 856f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp */ 857f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp if ((port_speed == 0x03) == (udev->speed == USB_SPEED_SUPER)) 858f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp num_similar_speed_ports++; 859f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp if (num_similar_speed_ports == faked_port_num) 860f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp /* Roothub ports are numbered from 1 to N */ 861f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp return i+1; 862f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp } 863f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp return 0; 864f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp} 865f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp 8663ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp/* Setup an xHCI virtual device for a Set Address command */ 8673ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharpint xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *udev) 8683ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp{ 8693ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp struct xhci_virt_device *dev; 8703ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp struct xhci_ep_ctx *ep0_ctx; 871d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn struct xhci_slot_ctx *slot_ctx; 872d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn struct xhci_input_control_ctx *ctrl_ctx; 873f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp u32 port_num; 874f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp struct usb_device *top_dev; 8753ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 8763ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dev = xhci->devs[udev->slot_id]; 8773ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Slot ID 0 is reserved */ 8783ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (udev->slot_id == 0 || !dev) { 8793ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci_warn(xhci, "Slot ID %d is not assigned to this device\n", 8803ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp udev->slot_id); 8813ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp return -EINVAL; 8823ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp } 883d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn ep0_ctx = xhci_get_ep_ctx(xhci, dev->in_ctx, 0); 884d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn ctrl_ctx = xhci_get_input_control_ctx(xhci, dev->in_ctx); 885d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn slot_ctx = xhci_get_slot_ctx(xhci, dev->in_ctx); 8863ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 8873ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* 2) New slot context and endpoint 0 context are valid*/ 888d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn ctrl_ctx->add_flags = SLOT_FLAG | EP0_FLAG; 8893ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 8903ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* 3) Only the control endpoint is valid - one endpoint context */ 891d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn slot_ctx->dev_info |= LAST_CTX(1); 8923ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 8934a0cd9670f22c308bc5936ee9734d8ee3f1baa52Sarah Sharp slot_ctx->dev_info |= (u32) udev->route; 8943ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp switch (udev->speed) { 8953ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp case USB_SPEED_SUPER: 896d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn slot_ctx->dev_info |= (u32) SLOT_SPEED_SS; 8973ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp break; 8983ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp case USB_SPEED_HIGH: 899d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn slot_ctx->dev_info |= (u32) SLOT_SPEED_HS; 9003ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp break; 9013ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp case USB_SPEED_FULL: 902d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn slot_ctx->dev_info |= (u32) SLOT_SPEED_FS; 9033ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp break; 9043ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp case USB_SPEED_LOW: 905d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn slot_ctx->dev_info |= (u32) SLOT_SPEED_LS; 9063ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp break; 907551cdbbeb118bd5ed301f8749aef69219284399bGreg Kroah-Hartman case USB_SPEED_WIRELESS: 9083ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci_dbg(xhci, "FIXME xHCI doesn't support wireless speeds\n"); 9093ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp return -EINVAL; 9103ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp break; 9113ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp default: 9123ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Speed was set earlier, this shouldn't happen. */ 9133ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp BUG(); 9143ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp } 9153ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Find the root hub port this device is under */ 916f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp port_num = xhci_find_real_port_number(xhci, udev); 917f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp if (!port_num) 918f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp return -EINVAL; 919f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp slot_ctx->dev_info2 |= (u32) ROOT_HUB_PORT(port_num); 920f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp /* Set the port number in the virtual_device to the faked port number */ 9213ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp for (top_dev = udev; top_dev->parent && top_dev->parent->parent; 9223ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp top_dev = top_dev->parent) 9233ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Found device below root hub */; 924be88fe4f4dda93e3264a887745123b1e6c4a6845Andiry Xu dev->port = top_dev->portnum; 925f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp xhci_dbg(xhci, "Set root hub portnum to %d\n", port_num); 926f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp xhci_dbg(xhci, "Set fake root hub portnum to %d\n", dev->port); 9273ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 928aa1b13efb7cfa9f7bf4942c1e858463e335c9500Sarah Sharp /* Is this a LS/FS device under an external HS hub? */ 929aa1b13efb7cfa9f7bf4942c1e858463e335c9500Sarah Sharp if (udev->tt && udev->tt->hub->parent) { 930d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn slot_ctx->tt_info = udev->tt->hub->slot_id; 931d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn slot_ctx->tt_info |= udev->ttport << 8; 93207b6de102843b717ecd962cf35ec4ad9b1fbed9dSarah Sharp if (udev->tt->multi) 93307b6de102843b717ecd962cf35ec4ad9b1fbed9dSarah Sharp slot_ctx->dev_info |= DEV_MTT; 9343ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp } 935700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "udev->tt = %p\n", udev->tt); 9363ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci_dbg(xhci, "udev->ttport = 0x%x\n", udev->ttport); 9373ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 9383ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Step 4 - ring already allocated */ 9393ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Step 5 */ 9403ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp ep0_ctx->ep_info2 = EP_TYPE(CTRL_EP); 9413ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* 9423ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp * XXX: Not sure about wireless USB devices. 9433ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp */ 94447aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp switch (udev->speed) { 94547aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp case USB_SPEED_SUPER: 9463ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp ep0_ctx->ep_info2 |= MAX_PACKET(512); 94747aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp break; 94847aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp case USB_SPEED_HIGH: 94947aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp /* USB core guesses at a 64-byte max packet first for FS devices */ 95047aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp case USB_SPEED_FULL: 95147aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp ep0_ctx->ep_info2 |= MAX_PACKET(64); 95247aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp break; 95347aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp case USB_SPEED_LOW: 9543ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp ep0_ctx->ep_info2 |= MAX_PACKET(8); 95547aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp break; 956551cdbbeb118bd5ed301f8749aef69219284399bGreg Kroah-Hartman case USB_SPEED_WIRELESS: 95747aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp xhci_dbg(xhci, "FIXME xHCI doesn't support wireless speeds\n"); 95847aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp return -EINVAL; 95947aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp break; 96047aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp default: 96147aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp /* New speed? */ 96247aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp BUG(); 96347aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp } 9643ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* EP 0 can handle "burst" sizes of 1, so Max Burst Size field is 0 */ 9653ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp ep0_ctx->ep_info2 |= MAX_BURST(0); 9663ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp ep0_ctx->ep_info2 |= ERROR_COUNT(3); 9673ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 9688e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp ep0_ctx->deq = 96963a0d9abd18cdcf5a985029c266c6bfe0511768fSarah Sharp dev->eps[0].ring->first_seg->dma; 97063a0d9abd18cdcf5a985029c266c6bfe0511768fSarah Sharp ep0_ctx->deq |= dev->eps[0].ring->cycle_state; 9713ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 9723ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Steps 7 and 8 were done in xhci_alloc_virt_device() */ 9733ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 9743ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp return 0; 9753ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp} 9763ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 977dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov/* 978dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov * Convert interval expressed as 2^(bInterval - 1) == interval into 979dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov * straight exponent value 2^n == interval. 980dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov * 981dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov */ 982dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhovstatic unsigned int xhci_parse_exponent_interval(struct usb_device *udev, 983dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov struct usb_host_endpoint *ep) 984dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov{ 985dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov unsigned int interval; 986dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov 987dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov interval = clamp_val(ep->desc.bInterval, 1, 16) - 1; 988dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov if (interval != ep->desc.bInterval - 1) 989dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov dev_warn(&udev->dev, 990dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov "ep %#x - rounding interval to %d microframes\n", 991dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov ep->desc.bEndpointAddress, 992dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov 1 << interval); 993dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov 994dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov return interval; 995dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov} 996dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov 997dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov/* 998dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov * Convert bInterval expressed in frames (in 1-255 range) to exponent of 999dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov * microframes, rounded down to nearest power of 2. 1000dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov */ 1001dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhovstatic unsigned int xhci_parse_frame_interval(struct usb_device *udev, 1002dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov struct usb_host_endpoint *ep) 1003dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov{ 1004dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov unsigned int interval; 1005dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov 1006dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov interval = fls(8 * ep->desc.bInterval) - 1; 1007dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov interval = clamp_val(interval, 3, 10); 1008dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov if ((1 << interval) != 8 * ep->desc.bInterval) 1009dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov dev_warn(&udev->dev, 1010dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov "ep %#x - rounding interval to %d microframes, ep desc says %d microframes\n", 1011dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov ep->desc.bEndpointAddress, 1012dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov 1 << interval, 1013dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov 8 * ep->desc.bInterval); 1014dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov 1015dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov return interval; 1016dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov} 1017dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov 1018f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp/* Return the polling or NAK interval. 1019f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp * 1020f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp * The polling interval is expressed in "microframes". If xHCI's Interval field 1021f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp * is set to N, it will service the endpoint every 2^(Interval)*125us. 1022f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp * 1023f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp * The NAK interval is one NAK per 1 to 255 microframes, or no NAKs if interval 1024f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp * is set to 0. 1025f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp */ 1026575688e1e5f462c44ddd608ce3ec9f38b64c3c0dDmitry Torokhovstatic unsigned int xhci_get_endpoint_interval(struct usb_device *udev, 1027f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp struct usb_host_endpoint *ep) 1028f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp{ 1029f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp unsigned int interval = 0; 1030f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 1031f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp switch (udev->speed) { 1032f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp case USB_SPEED_HIGH: 1033f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp /* Max NAK rate */ 1034f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (usb_endpoint_xfer_control(&ep->desc) || 1035dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov usb_endpoint_xfer_bulk(&ep->desc)) { 1036f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp interval = ep->desc.bInterval; 1037dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov break; 1038dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov } 1039f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp /* Fall through - SS and HS isoc/int have same decoding */ 1040dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov 1041f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp case USB_SPEED_SUPER: 1042f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (usb_endpoint_xfer_int(&ep->desc) || 1043dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov usb_endpoint_xfer_isoc(&ep->desc)) { 1044dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov interval = xhci_parse_exponent_interval(udev, ep); 1045f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp } 1046f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp break; 1047dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov 1048f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp case USB_SPEED_FULL: 1049dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov if (usb_endpoint_xfer_int(&ep->desc)) { 1050dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov interval = xhci_parse_exponent_interval(udev, ep); 1051dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov break; 1052dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov } 1053dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov /* 1054dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov * Fall through for isochronous endpoint interval decoding 1055dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov * since it uses the same rules as low speed interrupt 1056dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov * endpoints. 1057dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov */ 1058dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov 1059f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp case USB_SPEED_LOW: 1060f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (usb_endpoint_xfer_int(&ep->desc) || 1061dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov usb_endpoint_xfer_isoc(&ep->desc)) { 1062dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov 1063dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov interval = xhci_parse_frame_interval(udev, ep); 1064f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp } 1065f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp break; 1066dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov 1067f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp default: 1068f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp BUG(); 1069f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp } 1070f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp return EP_INTERVAL(interval); 1071f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp} 1072f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 1073c30c791c946a14a03e87819eced562ed28711961Sarah Sharp/* The "Mult" field in the endpoint context is only set for SuperSpeed isoc eps. 10741cf62246c0e394021e494e0a8f1013e80db1a1a9Sarah Sharp * High speed endpoint descriptors can define "the number of additional 10751cf62246c0e394021e494e0a8f1013e80db1a1a9Sarah Sharp * transaction opportunities per microframe", but that goes in the Max Burst 10761cf62246c0e394021e494e0a8f1013e80db1a1a9Sarah Sharp * endpoint context field. 10771cf62246c0e394021e494e0a8f1013e80db1a1a9Sarah Sharp */ 1078575688e1e5f462c44ddd608ce3ec9f38b64c3c0dDmitry Torokhovstatic u32 xhci_get_endpoint_mult(struct usb_device *udev, 10791cf62246c0e394021e494e0a8f1013e80db1a1a9Sarah Sharp struct usb_host_endpoint *ep) 10801cf62246c0e394021e494e0a8f1013e80db1a1a9Sarah Sharp{ 1081c30c791c946a14a03e87819eced562ed28711961Sarah Sharp if (udev->speed != USB_SPEED_SUPER || 1082c30c791c946a14a03e87819eced562ed28711961Sarah Sharp !usb_endpoint_xfer_isoc(&ep->desc)) 10831cf62246c0e394021e494e0a8f1013e80db1a1a9Sarah Sharp return 0; 1084842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8Alan Stern return ep->ss_ep_comp.bmAttributes; 10851cf62246c0e394021e494e0a8f1013e80db1a1a9Sarah Sharp} 10861cf62246c0e394021e494e0a8f1013e80db1a1a9Sarah Sharp 1087575688e1e5f462c44ddd608ce3ec9f38b64c3c0dDmitry Torokhovstatic u32 xhci_get_endpoint_type(struct usb_device *udev, 1088f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp struct usb_host_endpoint *ep) 1089f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp{ 1090f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp int in; 1091f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp u32 type; 1092f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 1093f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp in = usb_endpoint_dir_in(&ep->desc); 1094f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (usb_endpoint_xfer_control(&ep->desc)) { 1095f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp type = EP_TYPE(CTRL_EP); 1096f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp } else if (usb_endpoint_xfer_bulk(&ep->desc)) { 1097f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (in) 1098f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp type = EP_TYPE(BULK_IN_EP); 1099f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp else 1100f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp type = EP_TYPE(BULK_OUT_EP); 1101f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp } else if (usb_endpoint_xfer_isoc(&ep->desc)) { 1102f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (in) 1103f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp type = EP_TYPE(ISOC_IN_EP); 1104f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp else 1105f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp type = EP_TYPE(ISOC_OUT_EP); 1106f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp } else if (usb_endpoint_xfer_int(&ep->desc)) { 1107f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (in) 1108f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp type = EP_TYPE(INT_IN_EP); 1109f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp else 1110f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp type = EP_TYPE(INT_OUT_EP); 1111f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp } else { 1112f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp BUG(); 1113f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp } 1114f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp return type; 1115f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp} 1116f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 11179238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp/* Return the maximum endpoint service interval time (ESIT) payload. 11189238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp * Basically, this is the maxpacket size, multiplied by the burst size 11199238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp * and mult size. 11209238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp */ 1121575688e1e5f462c44ddd608ce3ec9f38b64c3c0dDmitry Torokhovstatic u32 xhci_get_max_esit_payload(struct xhci_hcd *xhci, 11229238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp struct usb_device *udev, 11239238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp struct usb_host_endpoint *ep) 11249238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp{ 11259238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp int max_burst; 11269238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp int max_packet; 11279238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp 11289238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp /* Only applies for interrupt or isochronous endpoints */ 11299238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp if (usb_endpoint_xfer_control(&ep->desc) || 11309238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp usb_endpoint_xfer_bulk(&ep->desc)) 11319238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp return 0; 11329238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp 1133842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8Alan Stern if (udev->speed == USB_SPEED_SUPER) 1134842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8Alan Stern return ep->ss_ep_comp.wBytesPerInterval; 11359238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp 1136dc07c91b9b4067022210e68d914a6890a4d70622Andiry Xu max_packet = GET_MAX_PACKET(ep->desc.wMaxPacketSize); 11379238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp max_burst = (ep->desc.wMaxPacketSize & 0x1800) >> 11; 11389238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp /* A 0 in max burst means 1 transfer per ESIT */ 11399238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp return max_packet * (max_burst + 1); 11409238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp} 11419238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp 11428df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp/* Set up an endpoint with one ring segment. Do not allocate stream rings. 11438df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * Drivers will have to call usb_alloc_streams() to do that. 11448df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp */ 1145f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharpint xhci_endpoint_init(struct xhci_hcd *xhci, 1146f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp struct xhci_virt_device *virt_dev, 1147f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp struct usb_device *udev, 1148f88ba78d9ac0e1f583da4cada80b8816ca761a3fSarah Sharp struct usb_host_endpoint *ep, 1149f88ba78d9ac0e1f583da4cada80b8816ca761a3fSarah Sharp gfp_t mem_flags) 1150f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp{ 1151f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp unsigned int ep_index; 1152f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp struct xhci_ep_ctx *ep_ctx; 1153f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp struct xhci_ring *ep_ring; 1154f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp unsigned int max_packet; 1155f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp unsigned int max_burst; 11569238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp u32 max_esit_payload; 1157f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 1158f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp ep_index = xhci_get_endpoint_index(&ep->desc); 1159d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn ep_ctx = xhci_get_ep_ctx(xhci, virt_dev->in_ctx, ep_index); 1160f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 1161f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp /* Set up the endpoint ring */ 1162a061a5a0b816de3b4711a2e96764bb3cd8df861eAndiry Xu /* 1163a061a5a0b816de3b4711a2e96764bb3cd8df861eAndiry Xu * Isochronous endpoint ring needs bigger size because one isoc URB 1164a061a5a0b816de3b4711a2e96764bb3cd8df861eAndiry Xu * carries multiple packets and it will insert multiple tds to the 1165a061a5a0b816de3b4711a2e96764bb3cd8df861eAndiry Xu * ring. 1166a061a5a0b816de3b4711a2e96764bb3cd8df861eAndiry Xu * This should be replaced with dynamic ring resizing in the future. 1167a061a5a0b816de3b4711a2e96764bb3cd8df861eAndiry Xu */ 1168a061a5a0b816de3b4711a2e96764bb3cd8df861eAndiry Xu if (usb_endpoint_xfer_isoc(&ep->desc)) 1169a061a5a0b816de3b4711a2e96764bb3cd8df861eAndiry Xu virt_dev->eps[ep_index].new_ring = 1170a061a5a0b816de3b4711a2e96764bb3cd8df861eAndiry Xu xhci_ring_alloc(xhci, 8, true, mem_flags); 1171a061a5a0b816de3b4711a2e96764bb3cd8df861eAndiry Xu else 1172a061a5a0b816de3b4711a2e96764bb3cd8df861eAndiry Xu virt_dev->eps[ep_index].new_ring = 1173a061a5a0b816de3b4711a2e96764bb3cd8df861eAndiry Xu xhci_ring_alloc(xhci, 1, true, mem_flags); 117474f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp if (!virt_dev->eps[ep_index].new_ring) { 117574f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp /* Attempt to use the ring cache */ 117674f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp if (virt_dev->num_rings_cached == 0) 117774f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp return -ENOMEM; 117874f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp virt_dev->eps[ep_index].new_ring = 117974f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp virt_dev->ring_cache[virt_dev->num_rings_cached]; 118074f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp virt_dev->ring_cache[virt_dev->num_rings_cached] = NULL; 118174f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp virt_dev->num_rings_cached--; 118274f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp xhci_reinit_cached_ring(xhci, virt_dev->eps[ep_index].new_ring); 118374f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp } 1184d18240db797ed749b511b8dc910c5dcf08be46d6Andiry Xu virt_dev->eps[ep_index].skip = false; 118563a0d9abd18cdcf5a985029c266c6bfe0511768fSarah Sharp ep_ring = virt_dev->eps[ep_index].new_ring; 11868e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp ep_ctx->deq = ep_ring->first_seg->dma | ep_ring->cycle_state; 1187f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 1188f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp ep_ctx->ep_info = xhci_get_endpoint_interval(udev, ep); 11891cf62246c0e394021e494e0a8f1013e80db1a1a9Sarah Sharp ep_ctx->ep_info |= EP_MULT(xhci_get_endpoint_mult(udev, ep)); 1190f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 1191f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp /* FIXME dig Mult and streams info out of ep companion desc */ 1192f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 119347692d179f7a88794bcd302e53ca7899d7592db9Sarah Sharp /* Allow 3 retries for everything but isoc; 119447692d179f7a88794bcd302e53ca7899d7592db9Sarah Sharp * error count = 0 means infinite retries. 119547692d179f7a88794bcd302e53ca7899d7592db9Sarah Sharp */ 1196f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (!usb_endpoint_xfer_isoc(&ep->desc)) 1197f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp ep_ctx->ep_info2 = ERROR_COUNT(3); 1198f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp else 119947692d179f7a88794bcd302e53ca7899d7592db9Sarah Sharp ep_ctx->ep_info2 = ERROR_COUNT(1); 1200f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 1201f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp ep_ctx->ep_info2 |= xhci_get_endpoint_type(udev, ep); 1202f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 1203f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp /* Set the max packet size and max burst */ 1204f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp switch (udev->speed) { 1205f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp case USB_SPEED_SUPER: 1206f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp max_packet = ep->desc.wMaxPacketSize; 1207f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp ep_ctx->ep_info2 |= MAX_PACKET(max_packet); 1208b10de142119a676552df3f0d2e3a9d647036c26aSarah Sharp /* dig out max burst from ep companion desc */ 1209842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8Alan Stern max_packet = ep->ss_ep_comp.bMaxBurst; 1210842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8Alan Stern if (!max_packet) 1211842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8Alan Stern xhci_warn(xhci, "WARN no SS endpoint bMaxBurst\n"); 1212b10de142119a676552df3f0d2e3a9d647036c26aSarah Sharp ep_ctx->ep_info2 |= MAX_BURST(max_packet); 1213f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp break; 1214f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp case USB_SPEED_HIGH: 1215f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp /* bits 11:12 specify the number of additional transaction 1216f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp * opportunities per microframe (USB 2.0, section 9.6.6) 1217f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp */ 1218f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (usb_endpoint_xfer_isoc(&ep->desc) || 1219f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp usb_endpoint_xfer_int(&ep->desc)) { 1220f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp max_burst = (ep->desc.wMaxPacketSize & 0x1800) >> 11; 1221f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp ep_ctx->ep_info2 |= MAX_BURST(max_burst); 1222f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp } 1223f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp /* Fall through */ 1224f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp case USB_SPEED_FULL: 1225f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp case USB_SPEED_LOW: 1226dc07c91b9b4067022210e68d914a6890a4d70622Andiry Xu max_packet = GET_MAX_PACKET(ep->desc.wMaxPacketSize); 1227f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp ep_ctx->ep_info2 |= MAX_PACKET(max_packet); 1228f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp break; 1229f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp default: 1230f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp BUG(); 1231f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp } 12329238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp max_esit_payload = xhci_get_max_esit_payload(xhci, udev, ep); 12339238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp ep_ctx->tx_info = MAX_ESIT_PAYLOAD_FOR_EP(max_esit_payload); 12349238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp 12359238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp /* 12369238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp * XXX no idea how to calculate the average TRB buffer length for bulk 12379238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp * endpoints, as the driver gives us no clue how big each scatter gather 12389238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp * list entry (or buffer) is going to be. 12399238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp * 12409238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp * For isochronous and interrupt endpoints, we set it to the max 12419238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp * available, until we have new API in the USB core to allow drivers to 12429238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp * declare how much bandwidth they actually need. 12439238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp * 12449238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp * Normally, it would be calculated by taking the total of the buffer 12459238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp * lengths in the TD and then dividing by the number of TRBs in a TD, 12469238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp * including link TRBs, No-op TRBs, and Event data TRBs. Since we don't 12479238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp * use Event Data TRBs, and we don't chain in a link TRB on short 12489238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp * transfers, we're basically dividing by 1. 12499238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp */ 12509238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp ep_ctx->tx_info |= AVG_TRB_LENGTH_FOR_EP(max_esit_payload); 12519238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp 1252f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp /* FIXME Debug endpoint context */ 1253f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp return 0; 1254f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp} 1255f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 1256f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharpvoid xhci_endpoint_zero(struct xhci_hcd *xhci, 1257f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp struct xhci_virt_device *virt_dev, 1258f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp struct usb_host_endpoint *ep) 1259f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp{ 1260f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp unsigned int ep_index; 1261f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp struct xhci_ep_ctx *ep_ctx; 1262f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 1263f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp ep_index = xhci_get_endpoint_index(&ep->desc); 1264d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn ep_ctx = xhci_get_ep_ctx(xhci, virt_dev->in_ctx, ep_index); 1265f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 1266f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp ep_ctx->ep_info = 0; 1267f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp ep_ctx->ep_info2 = 0; 12688e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp ep_ctx->deq = 0; 1269f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp ep_ctx->tx_info = 0; 1270f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp /* Don't free the endpoint ring until the set interface or configuration 1271f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp * request succeeds. 1272f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp */ 1273f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp} 1274f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 1275f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp/* Copy output xhci_ep_ctx to the input xhci_ep_ctx copy. 1276f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp * Useful when you want to change one particular aspect of the endpoint and then 1277f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp * issue a configure endpoint command. 1278f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp */ 1279f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharpvoid xhci_endpoint_copy(struct xhci_hcd *xhci, 1280913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp struct xhci_container_ctx *in_ctx, 1281913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp struct xhci_container_ctx *out_ctx, 1282913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp unsigned int ep_index) 1283f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp{ 1284f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp struct xhci_ep_ctx *out_ep_ctx; 1285f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp struct xhci_ep_ctx *in_ep_ctx; 1286f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp 1287913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp out_ep_ctx = xhci_get_ep_ctx(xhci, out_ctx, ep_index); 1288913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp in_ep_ctx = xhci_get_ep_ctx(xhci, in_ctx, ep_index); 1289f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp 1290f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp in_ep_ctx->ep_info = out_ep_ctx->ep_info; 1291f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp in_ep_ctx->ep_info2 = out_ep_ctx->ep_info2; 1292f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp in_ep_ctx->deq = out_ep_ctx->deq; 1293f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp in_ep_ctx->tx_info = out_ep_ctx->tx_info; 1294f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp} 1295f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp 1296f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp/* Copy output xhci_slot_ctx to the input xhci_slot_ctx. 1297f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp * Useful when you want to change one particular aspect of the endpoint and then 1298f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp * issue a configure endpoint command. Only the context entries field matters, 1299f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp * but we'll copy the whole thing anyway. 1300f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp */ 1301913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharpvoid xhci_slot_copy(struct xhci_hcd *xhci, 1302913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp struct xhci_container_ctx *in_ctx, 1303913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp struct xhci_container_ctx *out_ctx) 1304f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp{ 1305f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp struct xhci_slot_ctx *in_slot_ctx; 1306f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp struct xhci_slot_ctx *out_slot_ctx; 1307f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp 1308913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp in_slot_ctx = xhci_get_slot_ctx(xhci, in_ctx); 1309913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp out_slot_ctx = xhci_get_slot_ctx(xhci, out_ctx); 1310f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp 1311f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp in_slot_ctx->dev_info = out_slot_ctx->dev_info; 1312f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp in_slot_ctx->dev_info2 = out_slot_ctx->dev_info2; 1313f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp in_slot_ctx->tt_info = out_slot_ctx->tt_info; 1314f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp in_slot_ctx->dev_state = out_slot_ctx->dev_state; 1315f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp} 1316f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp 1317254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn/* Set up the scratchpad buffer array and scratchpad buffers, if needed. */ 1318254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Younstatic int scratchpad_alloc(struct xhci_hcd *xhci, gfp_t flags) 1319254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn{ 1320254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn int i; 1321254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn struct device *dev = xhci_to_hcd(xhci)->self.controller; 1322254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn int num_sp = HCS_MAX_SCRATCHPAD(xhci->hcs_params2); 1323254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1324254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci_dbg(xhci, "Allocating %d scratchpad buffers\n", num_sp); 1325254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1326254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn if (!num_sp) 1327254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn return 0; 1328254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1329254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad = kzalloc(sizeof(*xhci->scratchpad), flags); 1330254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn if (!xhci->scratchpad) 1331254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn goto fail_sp; 1332254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1333254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_array = 1334254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn pci_alloc_consistent(to_pci_dev(dev), 1335254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn num_sp * sizeof(u64), 1336254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn &xhci->scratchpad->sp_dma); 1337254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn if (!xhci->scratchpad->sp_array) 1338254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn goto fail_sp2; 1339254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1340254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_buffers = kzalloc(sizeof(void *) * num_sp, flags); 1341254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn if (!xhci->scratchpad->sp_buffers) 1342254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn goto fail_sp3; 1343254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1344254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_dma_buffers = 1345254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn kzalloc(sizeof(dma_addr_t) * num_sp, flags); 1346254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1347254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn if (!xhci->scratchpad->sp_dma_buffers) 1348254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn goto fail_sp4; 1349254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1350254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->dcbaa->dev_context_ptrs[0] = xhci->scratchpad->sp_dma; 1351254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn for (i = 0; i < num_sp; i++) { 1352254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn dma_addr_t dma; 1353254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn void *buf = pci_alloc_consistent(to_pci_dev(dev), 1354254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->page_size, &dma); 1355254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn if (!buf) 1356254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn goto fail_sp5; 1357254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1358254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_array[i] = dma; 1359254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_buffers[i] = buf; 1360254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_dma_buffers[i] = dma; 1361254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn } 1362254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1363254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn return 0; 1364254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1365254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn fail_sp5: 1366254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn for (i = i - 1; i >= 0; i--) { 1367254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn pci_free_consistent(to_pci_dev(dev), xhci->page_size, 1368254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_buffers[i], 1369254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_dma_buffers[i]); 1370254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn } 1371254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn kfree(xhci->scratchpad->sp_dma_buffers); 1372254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1373254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn fail_sp4: 1374254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn kfree(xhci->scratchpad->sp_buffers); 1375254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1376254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn fail_sp3: 1377254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn pci_free_consistent(to_pci_dev(dev), num_sp * sizeof(u64), 1378254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_array, 1379254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_dma); 1380254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1381254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn fail_sp2: 1382254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn kfree(xhci->scratchpad); 1383254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad = NULL; 1384254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1385254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn fail_sp: 1386254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn return -ENOMEM; 1387254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn} 1388254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1389254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Younstatic void scratchpad_free(struct xhci_hcd *xhci) 1390254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn{ 1391254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn int num_sp; 1392254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn int i; 1393254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn struct pci_dev *pdev = to_pci_dev(xhci_to_hcd(xhci)->self.controller); 1394254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1395254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn if (!xhci->scratchpad) 1396254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn return; 1397254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1398254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn num_sp = HCS_MAX_SCRATCHPAD(xhci->hcs_params2); 1399254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1400254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn for (i = 0; i < num_sp; i++) { 1401254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn pci_free_consistent(pdev, xhci->page_size, 1402254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_buffers[i], 1403254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_dma_buffers[i]); 1404254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn } 1405254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn kfree(xhci->scratchpad->sp_dma_buffers); 1406254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn kfree(xhci->scratchpad->sp_buffers); 1407254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn pci_free_consistent(pdev, num_sp * sizeof(u64), 1408254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_array, 1409254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_dma); 1410254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn kfree(xhci->scratchpad); 1411254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad = NULL; 1412254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn} 1413254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1414913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharpstruct xhci_command *xhci_alloc_command(struct xhci_hcd *xhci, 1415a1d78c16bd31a715785e21967ac6110b386a3c1fSarah Sharp bool allocate_in_ctx, bool allocate_completion, 1416a1d78c16bd31a715785e21967ac6110b386a3c1fSarah Sharp gfp_t mem_flags) 1417913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp{ 1418913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp struct xhci_command *command; 1419913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp 1420913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp command = kzalloc(sizeof(*command), mem_flags); 1421913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp if (!command) 1422913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp return NULL; 1423913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp 1424a1d78c16bd31a715785e21967ac6110b386a3c1fSarah Sharp if (allocate_in_ctx) { 1425a1d78c16bd31a715785e21967ac6110b386a3c1fSarah Sharp command->in_ctx = 1426a1d78c16bd31a715785e21967ac6110b386a3c1fSarah Sharp xhci_alloc_container_ctx(xhci, XHCI_CTX_TYPE_INPUT, 1427a1d78c16bd31a715785e21967ac6110b386a3c1fSarah Sharp mem_flags); 1428a1d78c16bd31a715785e21967ac6110b386a3c1fSarah Sharp if (!command->in_ctx) { 1429a1d78c16bd31a715785e21967ac6110b386a3c1fSarah Sharp kfree(command); 1430a1d78c16bd31a715785e21967ac6110b386a3c1fSarah Sharp return NULL; 1431a1d78c16bd31a715785e21967ac6110b386a3c1fSarah Sharp } 143206e182911da95a304eaab71288a47bc5c799c4ebJulia Lawall } 1433913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp 1434913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp if (allocate_completion) { 1435913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp command->completion = 1436913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp kzalloc(sizeof(struct completion), mem_flags); 1437913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp if (!command->completion) { 1438913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp xhci_free_container_ctx(xhci, command->in_ctx); 143906e182911da95a304eaab71288a47bc5c799c4ebJulia Lawall kfree(command); 1440913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp return NULL; 1441913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp } 1442913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp init_completion(command->completion); 1443913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp } 1444913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp 1445913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp command->status = 0; 1446913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp INIT_LIST_HEAD(&command->cmd_list); 1447913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp return command; 1448913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp} 1449913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp 14508e51adccd4c4b9ffcd509d7f2afce0a906139f75Andiry Xuvoid xhci_urb_free_priv(struct xhci_hcd *xhci, struct urb_priv *urb_priv) 14518e51adccd4c4b9ffcd509d7f2afce0a906139f75Andiry Xu{ 14528e51adccd4c4b9ffcd509d7f2afce0a906139f75Andiry Xu int last; 14538e51adccd4c4b9ffcd509d7f2afce0a906139f75Andiry Xu 14548e51adccd4c4b9ffcd509d7f2afce0a906139f75Andiry Xu if (!urb_priv) 14558e51adccd4c4b9ffcd509d7f2afce0a906139f75Andiry Xu return; 14568e51adccd4c4b9ffcd509d7f2afce0a906139f75Andiry Xu 14578e51adccd4c4b9ffcd509d7f2afce0a906139f75Andiry Xu last = urb_priv->length - 1; 14588e51adccd4c4b9ffcd509d7f2afce0a906139f75Andiry Xu if (last >= 0) { 14598e51adccd4c4b9ffcd509d7f2afce0a906139f75Andiry Xu int i; 14608e51adccd4c4b9ffcd509d7f2afce0a906139f75Andiry Xu for (i = 0; i <= last; i++) 14618e51adccd4c4b9ffcd509d7f2afce0a906139f75Andiry Xu kfree(urb_priv->td[i]); 14628e51adccd4c4b9ffcd509d7f2afce0a906139f75Andiry Xu } 14638e51adccd4c4b9ffcd509d7f2afce0a906139f75Andiry Xu kfree(urb_priv); 14648e51adccd4c4b9ffcd509d7f2afce0a906139f75Andiry Xu} 14658e51adccd4c4b9ffcd509d7f2afce0a906139f75Andiry Xu 1466913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharpvoid xhci_free_command(struct xhci_hcd *xhci, 1467913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp struct xhci_command *command) 1468913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp{ 1469913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp xhci_free_container_ctx(xhci, 1470913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp command->in_ctx); 1471913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp kfree(command->completion); 1472913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp kfree(command); 1473913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp} 1474913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp 147566d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharpvoid xhci_mem_cleanup(struct xhci_hcd *xhci) 147666d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp{ 14770ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct pci_dev *pdev = to_pci_dev(xhci_to_hcd(xhci)->self.controller); 14780ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp int size; 14793ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp int i; 14800ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 14810ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* Free the Event Ring Segment Table and the actual Event Ring */ 1482d94c05e33d9212ee67b8d4998f984cc71df8168bSarah Sharp if (xhci->ir_set) { 1483d94c05e33d9212ee67b8d4998f984cc71df8168bSarah Sharp xhci_writel(xhci, 0, &xhci->ir_set->erst_size); 1484d94c05e33d9212ee67b8d4998f984cc71df8168bSarah Sharp xhci_write_64(xhci, 0, &xhci->ir_set->erst_base); 1485d94c05e33d9212ee67b8d4998f984cc71df8168bSarah Sharp xhci_write_64(xhci, 0, &xhci->ir_set->erst_dequeue); 1486d94c05e33d9212ee67b8d4998f984cc71df8168bSarah Sharp } 14870ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp size = sizeof(struct xhci_erst_entry)*(xhci->erst.num_entries); 14880ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (xhci->erst.entries) 14890ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp pci_free_consistent(pdev, size, 14900ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->erst.entries, xhci->erst.erst_dma_addr); 14910ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->erst.entries = NULL; 14920ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg(xhci, "Freed ERST\n"); 14930ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (xhci->event_ring) 14940ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_ring_free(xhci, xhci->event_ring); 14950ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->event_ring = NULL; 14960ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg(xhci, "Freed event ring\n"); 14970ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 14988e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp xhci_write_64(xhci, 0, &xhci->op_regs->cmd_ring); 14990ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (xhci->cmd_ring) 15000ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_ring_free(xhci, xhci->cmd_ring); 15010ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->cmd_ring = NULL; 15020ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg(xhci, "Freed command ring\n"); 15033ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 15043ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp for (i = 1; i < MAX_HC_SLOTS; ++i) 15053ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci_free_virt_device(xhci, i); 15063ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 15070ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (xhci->segment_pool) 15080ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp dma_pool_destroy(xhci->segment_pool); 15090ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->segment_pool = NULL; 15100ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg(xhci, "Freed segment pool\n"); 15113ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 15123ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (xhci->device_pool) 15133ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dma_pool_destroy(xhci->device_pool); 15143ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci->device_pool = NULL; 15153ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci_dbg(xhci, "Freed device context pool\n"); 15163ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 15178df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (xhci->small_streams_pool) 15188df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp dma_pool_destroy(xhci->small_streams_pool); 15198df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci->small_streams_pool = NULL; 15208df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_dbg(xhci, "Freed small stream array pool\n"); 15218df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 15228df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (xhci->medium_streams_pool) 15238df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp dma_pool_destroy(xhci->medium_streams_pool); 15248df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci->medium_streams_pool = NULL; 15258df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_dbg(xhci, "Freed medium stream array pool\n"); 15268df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 15278e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp xhci_write_64(xhci, 0, &xhci->op_regs->dcbaa_ptr); 1528a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp if (xhci->dcbaa) 1529a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp pci_free_consistent(pdev, sizeof(*xhci->dcbaa), 1530a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp xhci->dcbaa, xhci->dcbaa->dma); 1531a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp xhci->dcbaa = NULL; 15323ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 15335294bea40666db5c5d6c336b8e4e55d69fa576caSarah Sharp scratchpad_free(xhci); 1534da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp 1535da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci->num_usb2_ports = 0; 1536da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci->num_usb3_ports = 0; 1537da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp kfree(xhci->usb2_ports); 1538da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp kfree(xhci->usb3_ports); 1539da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp kfree(xhci->port_array); 1540da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp 154166d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci->page_size = 0; 154266d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci->page_shift = 0; 154320b67cf51fa606442bb343afad0ee1a393a6afb3Sarah Sharp xhci->bus_state[0].bus_suspended = 0; 1544f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp xhci->bus_state[1].bus_suspended = 0; 154566d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp} 154666d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp 15476648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharpstatic int xhci_test_trb_in_td(struct xhci_hcd *xhci, 15486648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp struct xhci_segment *input_seg, 15496648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp union xhci_trb *start_trb, 15506648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp union xhci_trb *end_trb, 15516648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp dma_addr_t input_dma, 15526648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp struct xhci_segment *result_seg, 15536648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp char *test_name, int test_number) 15546648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp{ 15556648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp unsigned long long start_dma; 15566648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp unsigned long long end_dma; 15576648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp struct xhci_segment *seg; 15586648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp 15596648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp start_dma = xhci_trb_virt_to_dma(input_seg, start_trb); 15606648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp end_dma = xhci_trb_virt_to_dma(input_seg, end_trb); 15616648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp 15626648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp seg = trb_in_td(input_seg, start_trb, end_trb, input_dma); 15636648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp if (seg != result_seg) { 15646648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp xhci_warn(xhci, "WARN: %s TRB math test %d failed!\n", 15656648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp test_name, test_number); 15666648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp xhci_warn(xhci, "Tested TRB math w/ seg %p and " 15676648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp "input DMA 0x%llx\n", 15686648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp input_seg, 15696648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp (unsigned long long) input_dma); 15706648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp xhci_warn(xhci, "starting TRB %p (0x%llx DMA), " 15716648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp "ending TRB %p (0x%llx DMA)\n", 15726648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp start_trb, start_dma, 15736648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp end_trb, end_dma); 15746648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp xhci_warn(xhci, "Expected seg %p, got seg %p\n", 15756648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp result_seg, seg); 15766648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp return -1; 15776648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp } 15786648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp return 0; 15796648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp} 15806648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp 15816648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp/* TRB math checks for xhci_trb_in_td(), using the command and event rings. */ 15826648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharpstatic int xhci_check_trb_in_td_math(struct xhci_hcd *xhci, gfp_t mem_flags) 15836648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp{ 15846648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp struct { 15856648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp dma_addr_t input_dma; 15866648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp struct xhci_segment *result_seg; 15876648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp } simple_test_vector [] = { 15886648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp /* A zeroed DMA field should fail */ 15896648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp { 0, NULL }, 15906648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp /* One TRB before the ring start should fail */ 15916648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp { xhci->event_ring->first_seg->dma - 16, NULL }, 15926648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp /* One byte before the ring start should fail */ 15936648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp { xhci->event_ring->first_seg->dma - 1, NULL }, 15946648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp /* Starting TRB should succeed */ 15956648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp { xhci->event_ring->first_seg->dma, xhci->event_ring->first_seg }, 15966648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp /* Ending TRB should succeed */ 15976648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp { xhci->event_ring->first_seg->dma + (TRBS_PER_SEGMENT - 1)*16, 15986648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp xhci->event_ring->first_seg }, 15996648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp /* One byte after the ring end should fail */ 16006648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp { xhci->event_ring->first_seg->dma + (TRBS_PER_SEGMENT - 1)*16 + 1, NULL }, 16016648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp /* One TRB after the ring end should fail */ 16026648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp { xhci->event_ring->first_seg->dma + (TRBS_PER_SEGMENT)*16, NULL }, 16036648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp /* An address of all ones should fail */ 16046648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp { (dma_addr_t) (~0), NULL }, 16056648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp }; 16066648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp struct { 16076648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp struct xhci_segment *input_seg; 16086648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp union xhci_trb *start_trb; 16096648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp union xhci_trb *end_trb; 16106648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp dma_addr_t input_dma; 16116648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp struct xhci_segment *result_seg; 16126648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp } complex_test_vector [] = { 16136648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp /* Test feeding a valid DMA address from a different ring */ 16146648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp { .input_seg = xhci->event_ring->first_seg, 16156648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .start_trb = xhci->event_ring->first_seg->trbs, 16166648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .end_trb = &xhci->event_ring->first_seg->trbs[TRBS_PER_SEGMENT - 1], 16176648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .input_dma = xhci->cmd_ring->first_seg->dma, 16186648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .result_seg = NULL, 16196648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp }, 16206648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp /* Test feeding a valid end TRB from a different ring */ 16216648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp { .input_seg = xhci->event_ring->first_seg, 16226648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .start_trb = xhci->event_ring->first_seg->trbs, 16236648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .end_trb = &xhci->cmd_ring->first_seg->trbs[TRBS_PER_SEGMENT - 1], 16246648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .input_dma = xhci->cmd_ring->first_seg->dma, 16256648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .result_seg = NULL, 16266648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp }, 16276648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp /* Test feeding a valid start and end TRB from a different ring */ 16286648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp { .input_seg = xhci->event_ring->first_seg, 16296648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .start_trb = xhci->cmd_ring->first_seg->trbs, 16306648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .end_trb = &xhci->cmd_ring->first_seg->trbs[TRBS_PER_SEGMENT - 1], 16316648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .input_dma = xhci->cmd_ring->first_seg->dma, 16326648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .result_seg = NULL, 16336648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp }, 16346648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp /* TRB in this ring, but after this TD */ 16356648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp { .input_seg = xhci->event_ring->first_seg, 16366648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .start_trb = &xhci->event_ring->first_seg->trbs[0], 16376648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .end_trb = &xhci->event_ring->first_seg->trbs[3], 16386648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .input_dma = xhci->event_ring->first_seg->dma + 4*16, 16396648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .result_seg = NULL, 16406648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp }, 16416648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp /* TRB in this ring, but before this TD */ 16426648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp { .input_seg = xhci->event_ring->first_seg, 16436648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .start_trb = &xhci->event_ring->first_seg->trbs[3], 16446648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .end_trb = &xhci->event_ring->first_seg->trbs[6], 16456648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .input_dma = xhci->event_ring->first_seg->dma + 2*16, 16466648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .result_seg = NULL, 16476648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp }, 16486648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp /* TRB in this ring, but after this wrapped TD */ 16496648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp { .input_seg = xhci->event_ring->first_seg, 16506648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .start_trb = &xhci->event_ring->first_seg->trbs[TRBS_PER_SEGMENT - 3], 16516648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .end_trb = &xhci->event_ring->first_seg->trbs[1], 16526648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .input_dma = xhci->event_ring->first_seg->dma + 2*16, 16536648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .result_seg = NULL, 16546648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp }, 16556648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp /* TRB in this ring, but before this wrapped TD */ 16566648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp { .input_seg = xhci->event_ring->first_seg, 16576648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .start_trb = &xhci->event_ring->first_seg->trbs[TRBS_PER_SEGMENT - 3], 16586648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .end_trb = &xhci->event_ring->first_seg->trbs[1], 16596648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .input_dma = xhci->event_ring->first_seg->dma + (TRBS_PER_SEGMENT - 4)*16, 16606648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .result_seg = NULL, 16616648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp }, 16626648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp /* TRB not in this ring, and we have a wrapped TD */ 16636648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp { .input_seg = xhci->event_ring->first_seg, 16646648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .start_trb = &xhci->event_ring->first_seg->trbs[TRBS_PER_SEGMENT - 3], 16656648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .end_trb = &xhci->event_ring->first_seg->trbs[1], 16666648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .input_dma = xhci->cmd_ring->first_seg->dma + 2*16, 16676648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .result_seg = NULL, 16686648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp }, 16696648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp }; 16706648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp 16716648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp unsigned int num_tests; 16726648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp int i, ret; 16736648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp 1674e10fa4787f1fb9c8738dff955c272f30b7b63134Kulikov Vasiliy num_tests = ARRAY_SIZE(simple_test_vector); 16756648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp for (i = 0; i < num_tests; i++) { 16766648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp ret = xhci_test_trb_in_td(xhci, 16776648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp xhci->event_ring->first_seg, 16786648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp xhci->event_ring->first_seg->trbs, 16796648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp &xhci->event_ring->first_seg->trbs[TRBS_PER_SEGMENT - 1], 16806648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp simple_test_vector[i].input_dma, 16816648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp simple_test_vector[i].result_seg, 16826648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp "Simple", i); 16836648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp if (ret < 0) 16846648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp return ret; 16856648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp } 16866648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp 1687e10fa4787f1fb9c8738dff955c272f30b7b63134Kulikov Vasiliy num_tests = ARRAY_SIZE(complex_test_vector); 16886648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp for (i = 0; i < num_tests; i++) { 16896648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp ret = xhci_test_trb_in_td(xhci, 16906648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp complex_test_vector[i].input_seg, 16916648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp complex_test_vector[i].start_trb, 16926648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp complex_test_vector[i].end_trb, 16936648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp complex_test_vector[i].input_dma, 16946648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp complex_test_vector[i].result_seg, 16956648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp "Complex", i); 16966648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp if (ret < 0) 16976648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp return ret; 16986648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp } 16996648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp xhci_dbg(xhci, "TRB math tests passed.\n"); 17006648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp return 0; 17016648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp} 17026648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp 1703257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharpstatic void xhci_set_hc_event_deq(struct xhci_hcd *xhci) 1704257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp{ 1705257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp u64 temp; 1706257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp dma_addr_t deq; 1707257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp 1708257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp deq = xhci_trb_virt_to_dma(xhci->event_ring->deq_seg, 1709257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp xhci->event_ring->dequeue); 1710257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp if (deq == 0 && !in_interrupt()) 1711257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp xhci_warn(xhci, "WARN something wrong with SW event ring " 1712257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp "dequeue ptr.\n"); 1713257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp /* Update HC event ring dequeue pointer */ 1714257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp temp = xhci_read_64(xhci, &xhci->ir_set->erst_dequeue); 1715257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp temp &= ERST_PTR_MASK; 1716257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp /* Don't clear the EHB bit (which is RW1C) because 1717257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp * there might be more events to service. 1718257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp */ 1719257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp temp &= ~ERST_EHB; 1720257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp xhci_dbg(xhci, "// Write event ring dequeue pointer, " 1721257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp "preserving EHB bit\n"); 1722257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp xhci_write_64(xhci, ((u64) deq & (u64) ~ERST_PTR_MASK) | temp, 1723257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp &xhci->ir_set->erst_dequeue); 1724257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp} 1725257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp 1726da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharpstatic void xhci_add_in_port(struct xhci_hcd *xhci, unsigned int num_ports, 1727da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp u32 __iomem *addr, u8 major_revision) 1728da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp{ 1729da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp u32 temp, port_offset, port_count; 1730da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp int i; 1731da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp 1732da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (major_revision > 0x03) { 1733da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci_warn(xhci, "Ignoring unknown port speed, " 1734da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp "Ext Cap %p, revision = 0x%x\n", 1735da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp addr, major_revision); 1736da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp /* Ignoring port protocol we can't understand. FIXME */ 1737da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp return; 1738da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp } 1739da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp 1740da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp /* Port offset and count in the third dword, see section 7.2 */ 1741da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp temp = xhci_readl(xhci, addr + 2); 1742da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp port_offset = XHCI_EXT_PORT_OFF(temp); 1743da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp port_count = XHCI_EXT_PORT_COUNT(temp); 1744da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci_dbg(xhci, "Ext Cap %p, port offset = %u, " 1745da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp "count = %u, revision = 0x%x\n", 1746da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp addr, port_offset, port_count, major_revision); 1747da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp /* Port count includes the current port offset */ 1748da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (port_offset == 0 || (port_offset + port_count - 1) > num_ports) 1749da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp /* WTF? "Valid values are ‘1’ to MaxPorts" */ 1750da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp return; 1751da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp port_offset--; 1752da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp for (i = port_offset; i < (port_offset + port_count); i++) { 1753da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp /* Duplicate entry. Ignore the port if the revisions differ. */ 1754da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (xhci->port_array[i] != 0) { 1755da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci_warn(xhci, "Duplicate port entry, Ext Cap %p," 1756da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp " port %u\n", addr, i); 1757da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci_warn(xhci, "Port was marked as USB %u, " 1758da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp "duplicated as USB %u\n", 1759da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci->port_array[i], major_revision); 1760da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp /* Only adjust the roothub port counts if we haven't 1761da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp * found a similar duplicate. 1762da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp */ 1763da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (xhci->port_array[i] != major_revision && 176422e0487047567252d5677ff35766cd884375efc2Dan Carpenter xhci->port_array[i] != DUPLICATE_ENTRY) { 1765da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (xhci->port_array[i] == 0x03) 1766da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci->num_usb3_ports--; 1767da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp else 1768da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci->num_usb2_ports--; 176922e0487047567252d5677ff35766cd884375efc2Dan Carpenter xhci->port_array[i] = DUPLICATE_ENTRY; 1770da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp } 1771da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp /* FIXME: Should we disable the port? */ 1772f8bbeabc34aa945ab4275abc9a4dfde0aea798caSarah Sharp continue; 1773da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp } 1774da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci->port_array[i] = major_revision; 1775da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (major_revision == 0x03) 1776da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci->num_usb3_ports++; 1777da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp else 1778da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci->num_usb2_ports++; 1779da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp } 1780da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp /* FIXME: Should we disable ports not in the Extended Capabilities? */ 1781da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp} 1782da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp 1783da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp/* 1784da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp * Scan the Extended Capabilities for the "Supported Protocol Capabilities" that 1785da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp * specify what speeds each port is supposed to be. We can't count on the port 1786da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp * speed bits in the PORTSC register being correct until a device is connected, 1787da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp * but we need to set up the two fake roothubs with the correct number of USB 1788da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp * 3.0 and USB 2.0 ports at host controller initialization time. 1789da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp */ 1790da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharpstatic int xhci_setup_port_arrays(struct xhci_hcd *xhci, gfp_t flags) 1791da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp{ 1792da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp u32 __iomem *addr; 1793da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp u32 offset; 1794da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp unsigned int num_ports; 1795da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp int i, port_index; 1796da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp 1797da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp addr = &xhci->cap_regs->hcc_params; 1798da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp offset = XHCI_HCC_EXT_CAPS(xhci_readl(xhci, addr)); 1799da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (offset == 0) { 1800da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci_err(xhci, "No Extended Capability registers, " 1801da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp "unable to set up roothub.\n"); 1802da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp return -ENODEV; 1803da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp } 1804da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp 1805da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp num_ports = HCS_MAX_PORTS(xhci->hcs_params1); 1806da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci->port_array = kzalloc(sizeof(*xhci->port_array)*num_ports, flags); 1807da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (!xhci->port_array) 1808da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp return -ENOMEM; 1809da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp 1810da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp /* 1811da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp * For whatever reason, the first capability offset is from the 1812da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp * capability register base, not from the HCCPARAMS register. 1813da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp * See section 5.3.6 for offset calculation. 1814da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp */ 1815da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp addr = &xhci->cap_regs->hc_capbase + offset; 1816da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp while (1) { 1817da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp u32 cap_id; 1818da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp 1819da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp cap_id = xhci_readl(xhci, addr); 1820da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (XHCI_EXT_CAPS_ID(cap_id) == XHCI_EXT_CAPS_PROTOCOL) 1821da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci_add_in_port(xhci, num_ports, addr, 1822da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp (u8) XHCI_EXT_PORT_MAJOR(cap_id)); 1823da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp offset = XHCI_EXT_CAPS_NEXT(cap_id); 1824da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (!offset || (xhci->num_usb2_ports + xhci->num_usb3_ports) 1825da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp == num_ports) 1826da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp break; 1827da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp /* 1828da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp * Once you're into the Extended Capabilities, the offset is 1829da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp * always relative to the register holding the offset. 1830da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp */ 1831da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp addr += offset; 1832da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp } 1833da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp 1834da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (xhci->num_usb2_ports == 0 && xhci->num_usb3_ports == 0) { 1835da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci_warn(xhci, "No ports on the roothubs?\n"); 1836da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp return -ENODEV; 1837da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp } 1838da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci_dbg(xhci, "Found %u USB 2.0 ports and %u USB 3.0 ports.\n", 1839da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci->num_usb2_ports, xhci->num_usb3_ports); 1840d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp 1841d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp /* Place limits on the number of roothub ports so that the hub 1842d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp * descriptors aren't longer than the USB core will allocate. 1843d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp */ 1844d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp if (xhci->num_usb3_ports > 15) { 1845d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp xhci_dbg(xhci, "Limiting USB 3.0 roothub ports to 15.\n"); 1846d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp xhci->num_usb3_ports = 15; 1847d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp } 1848d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp if (xhci->num_usb2_ports > USB_MAXCHILDREN) { 1849d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp xhci_dbg(xhci, "Limiting USB 2.0 roothub ports to %u.\n", 1850d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp USB_MAXCHILDREN); 1851d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp xhci->num_usb2_ports = USB_MAXCHILDREN; 1852d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp } 1853d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp 1854da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp /* 1855da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp * Note we could have all USB 3.0 ports, or all USB 2.0 ports. 1856da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp * Not sure how the USB core will handle a hub with no ports... 1857da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp */ 1858da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (xhci->num_usb2_ports) { 1859da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci->usb2_ports = kmalloc(sizeof(*xhci->usb2_ports)* 1860da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci->num_usb2_ports, flags); 1861da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (!xhci->usb2_ports) 1862da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp return -ENOMEM; 1863da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp 1864da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp port_index = 0; 1865f8bbeabc34aa945ab4275abc9a4dfde0aea798caSarah Sharp for (i = 0; i < num_ports; i++) { 1866f8bbeabc34aa945ab4275abc9a4dfde0aea798caSarah Sharp if (xhci->port_array[i] == 0x03 || 1867f8bbeabc34aa945ab4275abc9a4dfde0aea798caSarah Sharp xhci->port_array[i] == 0 || 186822e0487047567252d5677ff35766cd884375efc2Dan Carpenter xhci->port_array[i] == DUPLICATE_ENTRY) 1869f8bbeabc34aa945ab4275abc9a4dfde0aea798caSarah Sharp continue; 1870f8bbeabc34aa945ab4275abc9a4dfde0aea798caSarah Sharp 1871f8bbeabc34aa945ab4275abc9a4dfde0aea798caSarah Sharp xhci->usb2_ports[port_index] = 1872f8bbeabc34aa945ab4275abc9a4dfde0aea798caSarah Sharp &xhci->op_regs->port_status_base + 1873f8bbeabc34aa945ab4275abc9a4dfde0aea798caSarah Sharp NUM_PORT_REGS*i; 1874f8bbeabc34aa945ab4275abc9a4dfde0aea798caSarah Sharp xhci_dbg(xhci, "USB 2.0 port at index %u, " 1875f8bbeabc34aa945ab4275abc9a4dfde0aea798caSarah Sharp "addr = %p\n", i, 1876f8bbeabc34aa945ab4275abc9a4dfde0aea798caSarah Sharp xhci->usb2_ports[port_index]); 1877f8bbeabc34aa945ab4275abc9a4dfde0aea798caSarah Sharp port_index++; 1878d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp if (port_index == xhci->num_usb2_ports) 1879d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp break; 1880f8bbeabc34aa945ab4275abc9a4dfde0aea798caSarah Sharp } 1881da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp } 1882da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (xhci->num_usb3_ports) { 1883da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci->usb3_ports = kmalloc(sizeof(*xhci->usb3_ports)* 1884da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci->num_usb3_ports, flags); 1885da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (!xhci->usb3_ports) 1886da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp return -ENOMEM; 1887da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp 1888da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp port_index = 0; 1889da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp for (i = 0; i < num_ports; i++) 1890da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (xhci->port_array[i] == 0x03) { 1891da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci->usb3_ports[port_index] = 1892da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp &xhci->op_regs->port_status_base + 1893da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp NUM_PORT_REGS*i; 1894da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci_dbg(xhci, "USB 3.0 port at index %u, " 1895da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp "addr = %p\n", i, 1896da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci->usb3_ports[port_index]); 1897da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp port_index++; 1898d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp if (port_index == xhci->num_usb3_ports) 1899d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp break; 1900da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp } 1901da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp } 1902da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp return 0; 1903da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp} 19046648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp 190566d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharpint xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) 190666d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp{ 19070ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp dma_addr_t dma; 19080ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct device *dev = xhci_to_hcd(xhci)->self.controller; 190966d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp unsigned int val, val2; 19108e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp u64 val_64; 19110ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct xhci_segment *seg; 191266d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp u32 page_size; 191366d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp int i; 191466d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp 191566d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp page_size = xhci_readl(xhci, &xhci->op_regs->page_size); 191666d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci_dbg(xhci, "Supported page size register = 0x%x\n", page_size); 191766d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp for (i = 0; i < 16; i++) { 191866d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp if ((0x1 & page_size) != 0) 191966d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp break; 192066d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp page_size = page_size >> 1; 192166d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp } 192266d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp if (i < 16) 192366d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci_dbg(xhci, "Supported page size of %iK\n", (1 << (i+12)) / 1024); 192466d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp else 192566d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci_warn(xhci, "WARN: no supported page size\n"); 192666d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp /* Use 4K pages, since that's common and the minimum the HC supports */ 192766d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci->page_shift = 12; 192866d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci->page_size = 1 << xhci->page_shift; 192966d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci_dbg(xhci, "HCD page size set to %iK\n", xhci->page_size / 1024); 193066d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp 193166d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp /* 193266d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp * Program the Number of Device Slots Enabled field in the CONFIG 193366d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp * register with the max value of slots the HC can handle. 193466d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp */ 193566d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp val = HCS_MAX_SLOTS(xhci_readl(xhci, &xhci->cap_regs->hcs_params1)); 193666d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci_dbg(xhci, "// xHC can handle at most %d device slots.\n", 193766d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp (unsigned int) val); 193866d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp val2 = xhci_readl(xhci, &xhci->op_regs->config_reg); 193966d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp val |= (val2 & ~HCS_SLOTS_MASK); 194066d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci_dbg(xhci, "// Setting Max device slots reg = 0x%x.\n", 194166d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp (unsigned int) val); 194266d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci_writel(xhci, val, &xhci->op_regs->config_reg); 194366d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp 19440ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* 1945a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp * Section 5.4.8 - doorbell array must be 1946a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp * "physically contiguous and 64-byte (cache line) aligned". 1947a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp */ 1948a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp xhci->dcbaa = pci_alloc_consistent(to_pci_dev(dev), 1949a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp sizeof(*xhci->dcbaa), &dma); 1950a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp if (!xhci->dcbaa) 1951a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp goto fail; 1952a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp memset(xhci->dcbaa, 0, sizeof *(xhci->dcbaa)); 1953a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp xhci->dcbaa->dma = dma; 1954700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "// Device context base array address = 0x%llx (DMA), %p (virt)\n", 1955700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman (unsigned long long)xhci->dcbaa->dma, xhci->dcbaa); 19568e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp xhci_write_64(xhci, dma, &xhci->op_regs->dcbaa_ptr); 1957a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp 1958a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp /* 19590ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * Initialize the ring segment pool. The ring must be a contiguous 19600ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * structure comprised of TRBs. The TRBs must be 16 byte aligned, 19610ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * however, the command ring segment needs 64-byte aligned segments, 19620ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * so we pick the greater alignment need. 19630ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp */ 19640ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->segment_pool = dma_pool_create("xHCI ring segments", dev, 19650ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp SEGMENT_SIZE, 64, xhci->page_size); 1966d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn 19673ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* See Table 46 and Note on Figure 55 */ 19683ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci->device_pool = dma_pool_create("xHCI input/output contexts", dev, 1969d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn 2112, 64, xhci->page_size); 19703ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (!xhci->segment_pool || !xhci->device_pool) 19710ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp goto fail; 19720ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 19738df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp /* Linear stream context arrays don't have any boundary restrictions, 19748df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * and only need to be 16-byte aligned. 19758df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp */ 19768df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci->small_streams_pool = 19778df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp dma_pool_create("xHCI 256 byte stream ctx arrays", 19788df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp dev, SMALL_STREAM_ARRAY_SIZE, 16, 0); 19798df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci->medium_streams_pool = 19808df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp dma_pool_create("xHCI 1KB stream ctx arrays", 19818df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp dev, MEDIUM_STREAM_ARRAY_SIZE, 16, 0); 19828df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp /* Any stream context array bigger than MEDIUM_STREAM_ARRAY_SIZE 19838df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * will be allocated with pci_alloc_consistent() 19848df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp */ 19858df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 19868df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (!xhci->small_streams_pool || !xhci->medium_streams_pool) 19878df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp goto fail; 19888df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 19890ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* Set up the command ring to have one segments for now. */ 19900ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->cmd_ring = xhci_ring_alloc(xhci, 1, true, flags); 19910ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (!xhci->cmd_ring) 19920ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp goto fail; 1993700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "Allocated command ring at %p\n", xhci->cmd_ring); 1994700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "First segment DMA is 0x%llx\n", 1995700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman (unsigned long long)xhci->cmd_ring->first_seg->dma); 19960ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 19970ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* Set the address in the Command Ring Control register */ 19988e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp val_64 = xhci_read_64(xhci, &xhci->op_regs->cmd_ring); 19998e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp val_64 = (val_64 & (u64) CMD_RING_RSVD_BITS) | 20008e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp (xhci->cmd_ring->first_seg->dma & (u64) ~CMD_RING_RSVD_BITS) | 20010ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->cmd_ring->cycle_state; 20028e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp xhci_dbg(xhci, "// Setting command ring address to 0x%x\n", val); 20038e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp xhci_write_64(xhci, val_64, &xhci->op_regs->cmd_ring); 20040ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg_cmd_ptrs(xhci); 20050ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 20060ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp val = xhci_readl(xhci, &xhci->cap_regs->db_off); 20070ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp val &= DBOFF_MASK; 20080ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg(xhci, "// Doorbell array is located at offset 0x%x" 20090ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp " from cap regs base addr\n", val); 2010c50a00f8feba42c5bccff47e052e4cb0c95dcd2bDmitry Torokhov xhci->dba = (void __iomem *) xhci->cap_regs + val; 20110ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg_regs(xhci); 20120ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_print_run_regs(xhci); 20130ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* Set ir_set to interrupt register set 0 */ 2014c50a00f8feba42c5bccff47e052e4cb0c95dcd2bDmitry Torokhov xhci->ir_set = &xhci->run_regs->ir_set[0]; 20150ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 20160ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* 20170ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * Event ring setup: Allocate a normal ring, but also setup 20180ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * the event ring segment table (ERST). Section 4.9.3. 20190ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp */ 20200ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg(xhci, "// Allocating event ring\n"); 20210ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->event_ring = xhci_ring_alloc(xhci, ERST_NUM_SEGS, false, flags); 20220ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (!xhci->event_ring) 20230ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp goto fail; 20246648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp if (xhci_check_trb_in_td_math(xhci, flags) < 0) 20256648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp goto fail; 20260ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 20270ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->erst.entries = pci_alloc_consistent(to_pci_dev(dev), 20280ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp sizeof(struct xhci_erst_entry)*ERST_NUM_SEGS, &dma); 20290ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (!xhci->erst.entries) 20300ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp goto fail; 2031700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "// Allocated event ring segment table at 0x%llx\n", 2032700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman (unsigned long long)dma); 20330ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 20340ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp memset(xhci->erst.entries, 0, sizeof(struct xhci_erst_entry)*ERST_NUM_SEGS); 20350ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->erst.num_entries = ERST_NUM_SEGS; 20360ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->erst.erst_dma_addr = dma; 2037700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "Set ERST to 0; private num segs = %i, virt addr = %p, dma addr = 0x%llx\n", 20380ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->erst.num_entries, 2039700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci->erst.entries, 2040700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman (unsigned long long)xhci->erst.erst_dma_addr); 20410ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 20420ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* set ring base address and size for each segment table entry */ 20430ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp for (val = 0, seg = xhci->event_ring->first_seg; val < ERST_NUM_SEGS; val++) { 20440ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct xhci_erst_entry *entry = &xhci->erst.entries[val]; 20458e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp entry->seg_addr = seg->dma; 20460ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp entry->seg_size = TRBS_PER_SEGMENT; 20470ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp entry->rsvd = 0; 20480ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp seg = seg->next; 20490ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp } 20500ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 20510ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* set ERST count with the number of entries in the segment table */ 20520ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp val = xhci_readl(xhci, &xhci->ir_set->erst_size); 20530ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp val &= ERST_SIZE_MASK; 20540ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp val |= ERST_NUM_SEGS; 20550ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg(xhci, "// Write ERST size = %i to ir_set 0 (some bits preserved)\n", 20560ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp val); 20570ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_writel(xhci, val, &xhci->ir_set->erst_size); 20580ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 20590ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg(xhci, "// Set ERST entries to point to event ring.\n"); 20600ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* set the segment table base address */ 2061700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "// Set ERST base address for ir_set 0 = 0x%llx\n", 2062700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman (unsigned long long)xhci->erst.erst_dma_addr); 20638e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp val_64 = xhci_read_64(xhci, &xhci->ir_set->erst_base); 20648e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp val_64 &= ERST_PTR_MASK; 20658e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp val_64 |= (xhci->erst.erst_dma_addr & (u64) ~ERST_PTR_MASK); 20668e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp xhci_write_64(xhci, val_64, &xhci->ir_set->erst_base); 20670ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 20680ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* Set the event ring dequeue address */ 206923e3be113f42790736319c049c78e5f9a4394c02Sarah Sharp xhci_set_hc_event_deq(xhci); 20700ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg(xhci, "Wrote ERST address to ir_set 0.\n"); 207109ece30e06b19994e6f3d260e5c4be18dce22714Dmitry Torokhov xhci_print_ir_set(xhci, 0); 20720ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 20730ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* 20740ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * XXX: Might need to set the Interrupter Moderation Register to 20750ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * something other than the default (~1ms minimum between interrupts). 20760ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * See section 5.5.1.2. 20770ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp */ 20783ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp init_completion(&xhci->addr_dev); 20793ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp for (i = 0; i < MAX_HC_SLOTS; ++i) 2080326b4810cc995209e31136af4202ed0414814ed5Randy Dunlap xhci->devs[i] = NULL; 2081f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp for (i = 0; i < USB_MAXCHILDREN; ++i) { 208220b67cf51fa606442bb343afad0ee1a393a6afb3Sarah Sharp xhci->bus_state[0].resume_done[i] = 0; 2083f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp xhci->bus_state[1].resume_done[i] = 0; 2084f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp } 208566d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp 2086254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn if (scratchpad_alloc(xhci, flags)) 2087254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn goto fail; 2088da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (xhci_setup_port_arrays(xhci, flags)) 2089da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp goto fail; 2090254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 209166d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp return 0; 2092254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 209366d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharpfail: 209466d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci_warn(xhci, "Couldn't initialize memory\n"); 209566d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci_mem_cleanup(xhci); 209666d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp return -ENOMEM; 209766d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp} 2098