xhci-mem.c revision 3b72fca09d7aed0c1a390370eb3f3f4f0480702a
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; 450ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 460ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp seg->trbs = dma_pool_alloc(xhci->segment_pool, flags, &dma); 470ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (!seg->trbs) { 480ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp kfree(seg); 49326b4810cc995209e31136af4202ed0414814ed5Randy Dunlap return NULL; 500ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp } 510ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 520ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp memset(seg->trbs, 0, SEGMENT_SIZE); 530ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp seg->dma = dma; 540ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp seg->next = NULL; 550ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 560ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp return seg; 570ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp} 580ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 590ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharpstatic void xhci_segment_free(struct xhci_hcd *xhci, struct xhci_segment *seg) 600ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp{ 610ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (seg->trbs) { 620ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp dma_pool_free(xhci->segment_pool, seg->trbs, seg->dma); 630ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp seg->trbs = NULL; 640ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp } 650ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp kfree(seg); 660ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp} 670ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 680ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp/* 690ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * Make the prev segment point to the next segment. 700ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * 710ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * Change the last TRB in the prev segment to be a Link TRB which points to the 720ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * DMA address of the next segment. The caller needs to set any Link TRB 730ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * related flags, such as End TRB, Toggle Cycle, and no snoop. 740ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp */ 750ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharpstatic void xhci_link_segments(struct xhci_hcd *xhci, struct xhci_segment *prev, 763b72fca09d7aed0c1a390370eb3f3f4f0480702aAndiry Xu struct xhci_segment *next, enum xhci_ring_type type) 770ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp{ 780ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp u32 val; 790ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 800ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (!prev || !next) 810ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp return; 820ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp prev->next = next; 833b72fca09d7aed0c1a390370eb3f3f4f0480702aAndiry Xu if (type != TYPE_EVENT) { 84f5960b698eb50a39fce1a066dc19a6a5a1148e16Matt Evans prev->trbs[TRBS_PER_SEGMENT-1].link.segment_ptr = 85f5960b698eb50a39fce1a066dc19a6a5a1148e16Matt Evans cpu_to_le64(next->dma); 860ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 870ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* Set the last TRB in the segment to have a TRB type ID of Link TRB */ 8828ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans val = le32_to_cpu(prev->trbs[TRBS_PER_SEGMENT-1].link.control); 890ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp val &= ~TRB_TYPE_BITMASK; 900ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp val |= TRB_TYPE(TRB_LINK); 91b0567b3f635db72c881a0d561cebb544ec085073Sarah Sharp /* Always set the chain bit with 0.95 hardware */ 927e393a834b41001174a8fb3ae3bc23a749467760Andiry Xu /* Set chain bit for isoc rings on AMD 0.96 host */ 937e393a834b41001174a8fb3ae3bc23a749467760Andiry Xu if (xhci_link_trb_quirk(xhci) || 943b72fca09d7aed0c1a390370eb3f3f4f0480702aAndiry Xu (type == TYPE_ISOC && 953b72fca09d7aed0c1a390370eb3f3f4f0480702aAndiry Xu (xhci->quirks & XHCI_AMD_0x96_HOST))) 96b0567b3f635db72c881a0d561cebb544ec085073Sarah Sharp val |= TRB_CHAIN; 9728ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans prev->trbs[TRBS_PER_SEGMENT-1].link.control = cpu_to_le32(val); 980ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp } 990ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp} 1000ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 1010ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp/* XXX: Do we need the hcd structure in all these functions? */ 102f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharpvoid xhci_ring_free(struct xhci_hcd *xhci, struct xhci_ring *ring) 1030ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp{ 1040ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct xhci_segment *seg; 1050ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct xhci_segment *first_seg; 1060ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 1070e6c7f746ea99089fb3263709075c20485a479aeKautuk Consul if (!ring) 1080ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp return; 1090e6c7f746ea99089fb3263709075c20485a479aeKautuk Consul if (ring->first_seg) { 1100e6c7f746ea99089fb3263709075c20485a479aeKautuk Consul first_seg = ring->first_seg; 1110e6c7f746ea99089fb3263709075c20485a479aeKautuk Consul seg = first_seg->next; 1120e6c7f746ea99089fb3263709075c20485a479aeKautuk Consul while (seg != first_seg) { 1130e6c7f746ea99089fb3263709075c20485a479aeKautuk Consul struct xhci_segment *next = seg->next; 1140e6c7f746ea99089fb3263709075c20485a479aeKautuk Consul xhci_segment_free(xhci, seg); 1150e6c7f746ea99089fb3263709075c20485a479aeKautuk Consul seg = next; 1160e6c7f746ea99089fb3263709075c20485a479aeKautuk Consul } 1170e6c7f746ea99089fb3263709075c20485a479aeKautuk Consul xhci_segment_free(xhci, first_seg); 1180e6c7f746ea99089fb3263709075c20485a479aeKautuk Consul ring->first_seg = NULL; 1190ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp } 1200ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp kfree(ring); 1210ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp} 1220ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 12374f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharpstatic void xhci_initialize_ring_info(struct xhci_ring *ring) 12474f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp{ 12574f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp /* The ring is empty, so the enqueue pointer == dequeue pointer */ 12674f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp ring->enqueue = ring->first_seg->trbs; 12774f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp ring->enq_seg = ring->first_seg; 12874f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp ring->dequeue = ring->enqueue; 12974f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp ring->deq_seg = ring->first_seg; 13074f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp /* The ring is initialized to 0. The producer must write 1 to the cycle 13174f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp * bit to handover ownership of the TRB, so PCS = 1. The consumer must 13274f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp * compare CCS to the cycle bit to check ownership, so CCS = 1. 13374f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp */ 13474f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp ring->cycle_state = 1; 13574f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp /* Not necessary for new rings, but needed for re-initialized rings */ 13674f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp ring->enq_updates = 0; 13774f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp ring->deq_updates = 0; 13874f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp} 13974f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp 1400ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp/** 1410ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * Create a new ring with zero or more segments. 1420ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * 1430ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * Link each segment together into a ring. 1440ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * Set the end flag and the cycle toggle bit on the last segment. 1450ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * See section 4.9.1 and figures 15 and 16. 1460ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp */ 1470ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharpstatic struct xhci_ring *xhci_ring_alloc(struct xhci_hcd *xhci, 1483b72fca09d7aed0c1a390370eb3f3f4f0480702aAndiry Xu unsigned int num_segs, enum xhci_ring_type type, gfp_t flags) 1490ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp{ 1500ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct xhci_ring *ring; 1510ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct xhci_segment *prev; 1520ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 1530ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp ring = kzalloc(sizeof *(ring), flags); 1540ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (!ring) 155326b4810cc995209e31136af4202ed0414814ed5Randy Dunlap return NULL; 1560ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 157d0e96f5a71a032ced0c35f521c1cbd67e816922aSarah Sharp INIT_LIST_HEAD(&ring->td_list); 1583b72fca09d7aed0c1a390370eb3f3f4f0480702aAndiry Xu ring->type = type; 1590ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (num_segs == 0) 1600ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp return ring; 1610ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 1620ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp ring->first_seg = xhci_segment_alloc(xhci, flags); 1630ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (!ring->first_seg) 1640ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp goto fail; 1650ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp num_segs--; 1660ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 1670ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp prev = ring->first_seg; 1680ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp while (num_segs > 0) { 1690ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct xhci_segment *next; 1700ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 1710ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp next = xhci_segment_alloc(xhci, flags); 1720ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (!next) 1730ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp goto fail; 1743b72fca09d7aed0c1a390370eb3f3f4f0480702aAndiry Xu xhci_link_segments(xhci, prev, next, type); 1750ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 1760ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp prev = next; 1770ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp num_segs--; 1780ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp } 1793b72fca09d7aed0c1a390370eb3f3f4f0480702aAndiry Xu xhci_link_segments(xhci, prev, ring->first_seg, type); 1800ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 1813b72fca09d7aed0c1a390370eb3f3f4f0480702aAndiry Xu /* Only event ring does not use link TRB */ 1823b72fca09d7aed0c1a390370eb3f3f4f0480702aAndiry Xu if (type != TYPE_EVENT) { 1830ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* See section 4.9.2.1 and 6.4.4.1 */ 184f5960b698eb50a39fce1a066dc19a6a5a1148e16Matt Evans prev->trbs[TRBS_PER_SEGMENT-1].link.control |= 185f5960b698eb50a39fce1a066dc19a6a5a1148e16Matt Evans cpu_to_le32(LINK_TOGGLE); 1860ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp } 18774f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp xhci_initialize_ring_info(ring); 1880ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp return ring; 1890ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 1900ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharpfail: 1910ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_ring_free(xhci, ring); 192326b4810cc995209e31136af4202ed0414814ed5Randy Dunlap return NULL; 1930ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp} 1940ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 195412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharpvoid xhci_free_or_cache_endpoint_ring(struct xhci_hcd *xhci, 196412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp struct xhci_virt_device *virt_dev, 197412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp unsigned int ep_index) 198412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp{ 199412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp int rings_cached; 200412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp 201412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp rings_cached = virt_dev->num_rings_cached; 202412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp if (rings_cached < XHCI_MAX_RINGS_CACHED) { 203412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp virt_dev->ring_cache[rings_cached] = 204412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp virt_dev->eps[ep_index].ring; 20530f89ca021c3e584b61bc5a14eede89f74b2e826Sarah Sharp virt_dev->num_rings_cached++; 206412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp xhci_dbg(xhci, "Cached old ring, " 207412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp "%d ring%s cached\n", 20830f89ca021c3e584b61bc5a14eede89f74b2e826Sarah Sharp virt_dev->num_rings_cached, 20930f89ca021c3e584b61bc5a14eede89f74b2e826Sarah Sharp (virt_dev->num_rings_cached > 1) ? "s" : ""); 210412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp } else { 211412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp xhci_ring_free(xhci, virt_dev->eps[ep_index].ring); 212412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp xhci_dbg(xhci, "Ring cache full (%d rings), " 213412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp "freeing ring\n", 214412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp virt_dev->num_rings_cached); 215412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp } 216412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp virt_dev->eps[ep_index].ring = NULL; 217412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp} 218412566bd716397e28e81fc9b20804bc6a6daf14dSarah Sharp 21974f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp/* Zero an endpoint ring (except for link TRBs) and move the enqueue and dequeue 22074f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp * pointers to the beginning of the ring. 22174f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp */ 22274f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharpstatic void xhci_reinit_cached_ring(struct xhci_hcd *xhci, 2233b72fca09d7aed0c1a390370eb3f3f4f0480702aAndiry Xu struct xhci_ring *ring, enum xhci_ring_type type) 22474f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp{ 22574f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp struct xhci_segment *seg = ring->first_seg; 22674f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp do { 22774f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp memset(seg->trbs, 0, 22874f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp sizeof(union xhci_trb)*TRBS_PER_SEGMENT); 22974f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp /* All endpoint rings have link TRBs */ 2303b72fca09d7aed0c1a390370eb3f3f4f0480702aAndiry Xu xhci_link_segments(xhci, seg, seg->next, type); 23174f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp seg = seg->next; 23274f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp } while (seg != ring->first_seg); 2333b72fca09d7aed0c1a390370eb3f3f4f0480702aAndiry Xu ring->type = type; 23474f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp xhci_initialize_ring_info(ring); 23574f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp /* td list should be empty since all URBs have been cancelled, 23674f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp * but just in case... 23774f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp */ 23874f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp INIT_LIST_HEAD(&ring->td_list); 23974f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp} 24074f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp 241d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn#define CTX_SIZE(_hcc) (HCC_64BYTE_CONTEXT(_hcc) ? 64 : 32) 242d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn 243326b4810cc995209e31136af4202ed0414814ed5Randy Dunlapstatic struct xhci_container_ctx *xhci_alloc_container_ctx(struct xhci_hcd *xhci, 244d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn int type, gfp_t flags) 245d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn{ 246d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn struct xhci_container_ctx *ctx = kzalloc(sizeof(*ctx), flags); 247d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn if (!ctx) 248d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn return NULL; 249d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn 250d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn BUG_ON((type != XHCI_CTX_TYPE_DEVICE) && (type != XHCI_CTX_TYPE_INPUT)); 251d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn ctx->type = type; 252d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn ctx->size = HCC_64BYTE_CONTEXT(xhci->hcc_params) ? 2048 : 1024; 253d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn if (type == XHCI_CTX_TYPE_INPUT) 254d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn ctx->size += CTX_SIZE(xhci->hcc_params); 255d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn 256d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn ctx->bytes = dma_pool_alloc(xhci->device_pool, flags, &ctx->dma); 257d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn memset(ctx->bytes, 0, ctx->size); 258d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn return ctx; 259d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn} 260d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn 261326b4810cc995209e31136af4202ed0414814ed5Randy Dunlapstatic void xhci_free_container_ctx(struct xhci_hcd *xhci, 262d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn struct xhci_container_ctx *ctx) 263d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn{ 264a1d78c16bd31a715785e21967ac6110b386a3c1fSarah Sharp if (!ctx) 265a1d78c16bd31a715785e21967ac6110b386a3c1fSarah Sharp return; 266d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn dma_pool_free(xhci->device_pool, ctx->bytes, ctx->dma); 267d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn kfree(ctx); 268d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn} 269d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn 270d115b04818e57bdbc7ccde4d0660b15e33013dc8John Younstruct xhci_input_control_ctx *xhci_get_input_control_ctx(struct xhci_hcd *xhci, 271d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn struct xhci_container_ctx *ctx) 272d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn{ 273d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn BUG_ON(ctx->type != XHCI_CTX_TYPE_INPUT); 274d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn return (struct xhci_input_control_ctx *)ctx->bytes; 275d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn} 276d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn 277d115b04818e57bdbc7ccde4d0660b15e33013dc8John Younstruct xhci_slot_ctx *xhci_get_slot_ctx(struct xhci_hcd *xhci, 278d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn struct xhci_container_ctx *ctx) 279d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn{ 280d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn if (ctx->type == XHCI_CTX_TYPE_DEVICE) 281d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn return (struct xhci_slot_ctx *)ctx->bytes; 282d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn 283d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn return (struct xhci_slot_ctx *) 284d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn (ctx->bytes + CTX_SIZE(xhci->hcc_params)); 285d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn} 286d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn 287d115b04818e57bdbc7ccde4d0660b15e33013dc8John Younstruct xhci_ep_ctx *xhci_get_ep_ctx(struct xhci_hcd *xhci, 288d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn struct xhci_container_ctx *ctx, 289d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn unsigned int ep_index) 290d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn{ 291d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn /* increment ep index by offset of start of ep ctx array */ 292d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn ep_index++; 293d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn if (ctx->type == XHCI_CTX_TYPE_INPUT) 294d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn ep_index++; 295d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn 296d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn return (struct xhci_ep_ctx *) 297d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn (ctx->bytes + (ep_index * CTX_SIZE(xhci->hcc_params))); 298d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn} 299d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn 3008df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 3018df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp/***************** Streams structures manipulation *************************/ 3028df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 3038212a49d1c1e53ad2bc3176b983a2483b48fd989Dmitry Torokhovstatic void xhci_free_stream_ctx(struct xhci_hcd *xhci, 3048df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp unsigned int num_stream_ctxs, 3058df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp struct xhci_stream_ctx *stream_ctx, dma_addr_t dma) 3068df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp{ 3078df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp struct pci_dev *pdev = to_pci_dev(xhci_to_hcd(xhci)->self.controller); 3088df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 3098df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (num_stream_ctxs > MEDIUM_STREAM_ARRAY_SIZE) 31022d45f01a836c2f5826b8b4b9e029e5f79afec57Sebastian Andrzej Siewior dma_free_coherent(&pdev->dev, 3118df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp sizeof(struct xhci_stream_ctx)*num_stream_ctxs, 3128df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_ctx, dma); 3138df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp else if (num_stream_ctxs <= SMALL_STREAM_ARRAY_SIZE) 3148df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp return dma_pool_free(xhci->small_streams_pool, 3158df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_ctx, dma); 3168df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp else 3178df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp return dma_pool_free(xhci->medium_streams_pool, 3188df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_ctx, dma); 3198df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp} 3208df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 3218df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp/* 3228df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * The stream context array for each endpoint with bulk streams enabled can 3238df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * vary in size, based on: 3248df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * - how many streams the endpoint supports, 3258df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * - the maximum primary stream array size the host controller supports, 3268df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * - and how many streams the device driver asks for. 3278df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * 3288df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * The stream context array must be a power of 2, and can be as small as 3298df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * 64 bytes or as large as 1MB. 3308df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp */ 3318212a49d1c1e53ad2bc3176b983a2483b48fd989Dmitry Torokhovstatic struct xhci_stream_ctx *xhci_alloc_stream_ctx(struct xhci_hcd *xhci, 3328df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp unsigned int num_stream_ctxs, dma_addr_t *dma, 3338df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp gfp_t mem_flags) 3348df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp{ 3358df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp struct pci_dev *pdev = to_pci_dev(xhci_to_hcd(xhci)->self.controller); 3368df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 3378df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (num_stream_ctxs > MEDIUM_STREAM_ARRAY_SIZE) 33822d45f01a836c2f5826b8b4b9e029e5f79afec57Sebastian Andrzej Siewior return dma_alloc_coherent(&pdev->dev, 3398df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp sizeof(struct xhci_stream_ctx)*num_stream_ctxs, 34022d45f01a836c2f5826b8b4b9e029e5f79afec57Sebastian Andrzej Siewior dma, mem_flags); 3418df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp else if (num_stream_ctxs <= SMALL_STREAM_ARRAY_SIZE) 3428df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp return dma_pool_alloc(xhci->small_streams_pool, 3438df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp mem_flags, dma); 3448df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp else 3458df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp return dma_pool_alloc(xhci->medium_streams_pool, 3468df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp mem_flags, dma); 3478df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp} 3488df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 349e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharpstruct xhci_ring *xhci_dma_to_transfer_ring( 350e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp struct xhci_virt_ep *ep, 351e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp u64 address) 352e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp{ 353e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp if (ep->ep_state & EP_HAS_STREAMS) 354e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp return radix_tree_lookup(&ep->stream_info->trb_address_map, 355e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp address >> SEGMENT_SHIFT); 356e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp return ep->ring; 357e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp} 358e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp 359e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp/* Only use this when you know stream_info is valid */ 3608df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp#ifdef CONFIG_USB_XHCI_HCD_DEBUGGING 361e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharpstatic struct xhci_ring *dma_to_stream_ring( 3628df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp struct xhci_stream_info *stream_info, 3638df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp u64 address) 3648df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp{ 3658df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp return radix_tree_lookup(&stream_info->trb_address_map, 3668df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp address >> SEGMENT_SHIFT); 3678df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp} 3688df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp#endif /* CONFIG_USB_XHCI_HCD_DEBUGGING */ 3698df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 370e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharpstruct xhci_ring *xhci_stream_id_to_ring( 371e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp struct xhci_virt_device *dev, 372e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp unsigned int ep_index, 373e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp unsigned int stream_id) 374e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp{ 375e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp struct xhci_virt_ep *ep = &dev->eps[ep_index]; 376e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp 377e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp if (stream_id == 0) 378e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp return ep->ring; 379e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp if (!ep->stream_info) 380e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp return NULL; 381e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp 382e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp if (stream_id > ep->stream_info->num_streams) 383e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp return NULL; 384e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp return ep->stream_info->stream_rings[stream_id]; 385e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp} 386e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp 3878df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp#ifdef CONFIG_USB_XHCI_HCD_DEBUGGING 3888df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharpstatic int xhci_test_radix_tree(struct xhci_hcd *xhci, 3898df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp unsigned int num_streams, 3908df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp struct xhci_stream_info *stream_info) 3918df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp{ 3928df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp u32 cur_stream; 3938df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp struct xhci_ring *cur_ring; 3948df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp u64 addr; 3958df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 3968df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp for (cur_stream = 1; cur_stream < num_streams; cur_stream++) { 3978df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp struct xhci_ring *mapped_ring; 3988df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp int trb_size = sizeof(union xhci_trb); 3998df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 4008df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp cur_ring = stream_info->stream_rings[cur_stream]; 4018df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp for (addr = cur_ring->first_seg->dma; 4028df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp addr < cur_ring->first_seg->dma + SEGMENT_SIZE; 4038df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp addr += trb_size) { 4048df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp mapped_ring = dma_to_stream_ring(stream_info, addr); 4058df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (cur_ring != mapped_ring) { 4068df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_warn(xhci, "WARN: DMA address 0x%08llx " 4078df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp "didn't map to stream ID %u; " 4088df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp "mapped to ring %p\n", 4098df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp (unsigned long long) addr, 4108df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp cur_stream, 4118df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp mapped_ring); 4128df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp return -EINVAL; 4138df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp } 4148df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp } 4158df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp /* One TRB after the end of the ring segment shouldn't return a 4168df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * pointer to the current ring (although it may be a part of a 4178df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * different ring). 4188df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp */ 4198df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp mapped_ring = dma_to_stream_ring(stream_info, addr); 4208df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (mapped_ring != cur_ring) { 4218df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp /* One TRB before should also fail */ 4228df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp addr = cur_ring->first_seg->dma - trb_size; 4238df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp mapped_ring = dma_to_stream_ring(stream_info, addr); 4248df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp } 4258df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (mapped_ring == cur_ring) { 4268df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_warn(xhci, "WARN: Bad DMA address 0x%08llx " 4278df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp "mapped to valid stream ID %u; " 4288df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp "mapped ring = %p\n", 4298df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp (unsigned long long) addr, 4308df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp cur_stream, 4318df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp mapped_ring); 4328df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp return -EINVAL; 4338df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp } 4348df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp } 4358df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp return 0; 4368df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp} 4378df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp#endif /* CONFIG_USB_XHCI_HCD_DEBUGGING */ 4388df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 4398df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp/* 4408df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * Change an endpoint's internal structure so it supports stream IDs. The 4418df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * number of requested streams includes stream 0, which cannot be used by device 4428df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * drivers. 4438df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * 4448df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * The number of stream contexts in the stream context array may be bigger than 4458df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * the number of streams the driver wants to use. This is because the number of 4468df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * stream context array entries must be a power of two. 4478df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * 4488df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * We need a radix tree for mapping physical addresses of TRBs to which stream 4498df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * ID they belong to. We need to do this because the host controller won't tell 4508df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * us which stream ring the TRB came from. We could store the stream ID in an 4518df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * event data TRB, but that doesn't help us for the cancellation case, since the 4528df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * endpoint may stop before it reaches that event data TRB. 4538df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * 4548df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * The radix tree maps the upper portion of the TRB DMA address to a ring 4558df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * segment that has the same upper portion of DMA addresses. For example, say I 4568df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * have segments of size 1KB, that are always 64-byte aligned. A segment may 4578df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * start at 0x10c91000 and end at 0x10c913f0. If I use the upper 10 bits, the 4588df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * key to the stream ID is 0x43244. I can use the DMA address of the TRB to 4598df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * pass the radix tree a key to get the right stream ID: 4608df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * 4618df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * 0x10c90fff >> 10 = 0x43243 4628df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * 0x10c912c0 >> 10 = 0x43244 4638df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * 0x10c91400 >> 10 = 0x43245 4648df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * 4658df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * Obviously, only those TRBs with DMA addresses that are within the segment 4668df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * will make the radix tree return the stream ID for that ring. 4678df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * 4688df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * Caveats for the radix tree: 4698df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * 4708df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * The radix tree uses an unsigned long as a key pair. On 32-bit systems, an 4718df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * unsigned long will be 32-bits; on a 64-bit system an unsigned long will be 4728df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * 64-bits. Since we only request 32-bit DMA addresses, we can use that as the 4738df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * key on 32-bit or 64-bit systems (it would also be fine if we asked for 64-bit 4748df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * PCI DMA addresses on a 64-bit system). There might be a problem on 32-bit 4758df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * extended systems (where the DMA address can be bigger than 32-bits), 4768df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * if we allow the PCI dma mask to be bigger than 32-bits. So don't do that. 4778df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp */ 4788df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharpstruct xhci_stream_info *xhci_alloc_stream_info(struct xhci_hcd *xhci, 4798df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp unsigned int num_stream_ctxs, 4808df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp unsigned int num_streams, gfp_t mem_flags) 4818df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp{ 4828df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp struct xhci_stream_info *stream_info; 4838df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp u32 cur_stream; 4848df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp struct xhci_ring *cur_ring; 4858df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp unsigned long key; 4868df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp u64 addr; 4878df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp int ret; 4888df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 4898df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_dbg(xhci, "Allocating %u streams and %u " 4908df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp "stream context array entries.\n", 4918df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp num_streams, num_stream_ctxs); 4928df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (xhci->cmd_ring_reserved_trbs == MAX_RSVD_CMD_TRBS) { 4938df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_dbg(xhci, "Command ring has no reserved TRBs available\n"); 4948df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp return NULL; 4958df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp } 4968df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci->cmd_ring_reserved_trbs++; 4978df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 4988df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_info = kzalloc(sizeof(struct xhci_stream_info), mem_flags); 4998df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (!stream_info) 5008df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp goto cleanup_trbs; 5018df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 5028df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_info->num_streams = num_streams; 5038df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_info->num_stream_ctxs = num_stream_ctxs; 5048df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 5058df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp /* Initialize the array of virtual pointers to stream rings. */ 5068df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_info->stream_rings = kzalloc( 5078df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp sizeof(struct xhci_ring *)*num_streams, 5088df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp mem_flags); 5098df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (!stream_info->stream_rings) 5108df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp goto cleanup_info; 5118df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 5128df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp /* Initialize the array of DMA addresses for stream rings for the HW. */ 5138df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_info->stream_ctx_array = xhci_alloc_stream_ctx(xhci, 5148df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp num_stream_ctxs, &stream_info->ctx_array_dma, 5158df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp mem_flags); 5168df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (!stream_info->stream_ctx_array) 5178df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp goto cleanup_ctx; 5188df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp memset(stream_info->stream_ctx_array, 0, 5198df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp sizeof(struct xhci_stream_ctx)*num_stream_ctxs); 5208df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 5218df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp /* Allocate everything needed to free the stream rings later */ 5228df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_info->free_streams_command = 5238df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_alloc_command(xhci, true, true, mem_flags); 5248df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (!stream_info->free_streams_command) 5258df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp goto cleanup_ctx; 5268df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 5278df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp INIT_RADIX_TREE(&stream_info->trb_address_map, GFP_ATOMIC); 5288df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 5298df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp /* Allocate rings for all the streams that the driver will use, 5308df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * and add their segment DMA addresses to the radix tree. 5318df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * Stream 0 is reserved. 5328df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp */ 5338df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp for (cur_stream = 1; cur_stream < num_streams; cur_stream++) { 5348df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_info->stream_rings[cur_stream] = 5353b72fca09d7aed0c1a390370eb3f3f4f0480702aAndiry Xu xhci_ring_alloc(xhci, 1, TYPE_STREAM, mem_flags); 5368df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp cur_ring = stream_info->stream_rings[cur_stream]; 5378df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (!cur_ring) 5388df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp goto cleanup_rings; 539e9df17eb1408cfafa3d1844bfc7f22c7237b31b8Sarah Sharp cur_ring->stream_id = cur_stream; 5408df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp /* Set deq ptr, cycle bit, and stream context type */ 5418df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp addr = cur_ring->first_seg->dma | 5428df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp SCT_FOR_CTX(SCT_PRI_TR) | 5438df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp cur_ring->cycle_state; 544f5960b698eb50a39fce1a066dc19a6a5a1148e16Matt Evans stream_info->stream_ctx_array[cur_stream].stream_ring = 545f5960b698eb50a39fce1a066dc19a6a5a1148e16Matt Evans cpu_to_le64(addr); 5468df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_dbg(xhci, "Setting stream %d ring ptr to 0x%08llx\n", 5478df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp cur_stream, (unsigned long long) addr); 5488df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 5498df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp key = (unsigned long) 5508df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp (cur_ring->first_seg->dma >> SEGMENT_SHIFT); 5518df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp ret = radix_tree_insert(&stream_info->trb_address_map, 5528df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp key, cur_ring); 5538df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (ret) { 5548df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_ring_free(xhci, cur_ring); 5558df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_info->stream_rings[cur_stream] = NULL; 5568df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp goto cleanup_rings; 5578df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp } 5588df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp } 5598df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp /* Leave the other unused stream ring pointers in the stream context 5608df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * array initialized to zero. This will cause the xHC to give us an 5618df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * error if the device asks for a stream ID we don't have setup (if it 5628df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * was any other way, the host controller would assume the ring is 5638df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * "empty" and wait forever for data to be queued to that stream ID). 5648df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp */ 5658df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp#if XHCI_DEBUG 5668df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp /* Do a little test on the radix tree to make sure it returns the 5678df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * correct values. 5688df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp */ 5698df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (xhci_test_radix_tree(xhci, num_streams, stream_info)) 5708df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp goto cleanup_rings; 5718df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp#endif 5728df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 5738df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp return stream_info; 5748df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 5758df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharpcleanup_rings: 5768df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp for (cur_stream = 1; cur_stream < num_streams; cur_stream++) { 5778df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp cur_ring = stream_info->stream_rings[cur_stream]; 5788df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (cur_ring) { 5798df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp addr = cur_ring->first_seg->dma; 5808df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp radix_tree_delete(&stream_info->trb_address_map, 5818df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp addr >> SEGMENT_SHIFT); 5828df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_ring_free(xhci, cur_ring); 5838df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_info->stream_rings[cur_stream] = NULL; 5848df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp } 5858df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp } 5868df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_free_command(xhci, stream_info->free_streams_command); 5878df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharpcleanup_ctx: 5888df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp kfree(stream_info->stream_rings); 5898df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharpcleanup_info: 5908df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp kfree(stream_info); 5918df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharpcleanup_trbs: 5928df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci->cmd_ring_reserved_trbs--; 5938df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp return NULL; 5948df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp} 5958df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp/* 5968df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * Sets the MaxPStreams field and the Linear Stream Array field. 5978df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * Sets the dequeue pointer to the stream context array. 5988df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp */ 5998df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharpvoid xhci_setup_streams_ep_input_ctx(struct xhci_hcd *xhci, 6008df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp struct xhci_ep_ctx *ep_ctx, 6018df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp struct xhci_stream_info *stream_info) 6028df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp{ 6038df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp u32 max_primary_streams; 6048df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp /* MaxPStreams is the number of stream context array entries, not the 6058df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * number we're actually using. Must be in 2^(MaxPstreams + 1) format. 6068df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * fls(0) = 0, fls(0x1) = 1, fls(0x10) = 2, fls(0x100) = 3, etc. 6078df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp */ 6088df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp max_primary_streams = fls(stream_info->num_stream_ctxs) - 2; 6098df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_dbg(xhci, "Setting number of stream ctx array entries to %u\n", 6108df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 1 << (max_primary_streams + 1)); 61128ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans ep_ctx->ep_info &= cpu_to_le32(~EP_MAXPSTREAMS_MASK); 61228ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans ep_ctx->ep_info |= cpu_to_le32(EP_MAXPSTREAMS(max_primary_streams) 61328ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans | EP_HAS_LSA); 61428ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans ep_ctx->deq = cpu_to_le64(stream_info->ctx_array_dma); 6158df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp} 6168df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 6178df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp/* 6188df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * Sets the MaxPStreams field and the Linear Stream Array field to 0. 6198df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * Reinstalls the "normal" endpoint ring (at its previous dequeue mark, 6208df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * not at the beginning of the ring). 6218df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp */ 6228df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharpvoid xhci_setup_no_streams_ep_input_ctx(struct xhci_hcd *xhci, 6238df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp struct xhci_ep_ctx *ep_ctx, 6248df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp struct xhci_virt_ep *ep) 6258df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp{ 6268df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp dma_addr_t addr; 62728ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans ep_ctx->ep_info &= cpu_to_le32(~(EP_MAXPSTREAMS_MASK | EP_HAS_LSA)); 6288df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp addr = xhci_trb_virt_to_dma(ep->ring->deq_seg, ep->ring->dequeue); 62928ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans ep_ctx->deq = cpu_to_le64(addr | ep->ring->cycle_state); 6308df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp} 6318df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 6328df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp/* Frees all stream contexts associated with the endpoint, 6338df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * 6348df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * Caller should fix the endpoint context streams fields. 6358df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp */ 6368df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharpvoid xhci_free_stream_info(struct xhci_hcd *xhci, 6378df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp struct xhci_stream_info *stream_info) 6388df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp{ 6398df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp int cur_stream; 6408df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp struct xhci_ring *cur_ring; 6418df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp dma_addr_t addr; 6428df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 6438df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (!stream_info) 6448df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp return; 6458df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 6468df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp for (cur_stream = 1; cur_stream < stream_info->num_streams; 6478df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp cur_stream++) { 6488df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp cur_ring = stream_info->stream_rings[cur_stream]; 6498df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (cur_ring) { 6508df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp addr = cur_ring->first_seg->dma; 6518df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp radix_tree_delete(&stream_info->trb_address_map, 6528df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp addr >> SEGMENT_SHIFT); 6538df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_ring_free(xhci, cur_ring); 6548df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_info->stream_rings[cur_stream] = NULL; 6558df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp } 6568df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp } 6578df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_free_command(xhci, stream_info->free_streams_command); 6588df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci->cmd_ring_reserved_trbs--; 6598df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (stream_info->stream_ctx_array) 6608df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_free_stream_ctx(xhci, 6618df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_info->num_stream_ctxs, 6628df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_info->stream_ctx_array, 6638df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp stream_info->ctx_array_dma); 6648df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 6658df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (stream_info) 6668df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp kfree(stream_info->stream_rings); 6678df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp kfree(stream_info); 6688df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp} 6698df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 6708df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 6718df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp/***************** Device context manipulation *************************/ 6728df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 6736f5165cf989387e84ef23122330b27cca1cbe831Sarah Sharpstatic void xhci_init_endpoint_timer(struct xhci_hcd *xhci, 6746f5165cf989387e84ef23122330b27cca1cbe831Sarah Sharp struct xhci_virt_ep *ep) 6756f5165cf989387e84ef23122330b27cca1cbe831Sarah Sharp{ 6766f5165cf989387e84ef23122330b27cca1cbe831Sarah Sharp init_timer(&ep->stop_cmd_timer); 6776f5165cf989387e84ef23122330b27cca1cbe831Sarah Sharp ep->stop_cmd_timer.data = (unsigned long) ep; 6786f5165cf989387e84ef23122330b27cca1cbe831Sarah Sharp ep->stop_cmd_timer.function = xhci_stop_endpoint_command_watchdog; 6796f5165cf989387e84ef23122330b27cca1cbe831Sarah Sharp ep->xhci = xhci; 6806f5165cf989387e84ef23122330b27cca1cbe831Sarah Sharp} 6816f5165cf989387e84ef23122330b27cca1cbe831Sarah Sharp 682839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharpstatic void xhci_free_tt_info(struct xhci_hcd *xhci, 683839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp struct xhci_virt_device *virt_dev, 684839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp int slot_id) 685839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp{ 686839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp struct list_head *tt; 687839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp struct list_head *tt_list_head; 688839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp struct list_head *tt_next; 689839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp struct xhci_tt_bw_info *tt_info; 690839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp 691839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp /* If the device never made it past the Set Address stage, 692839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp * it may not have the real_port set correctly. 693839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp */ 694839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp if (virt_dev->real_port == 0 || 695839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp virt_dev->real_port > HCS_MAX_PORTS(xhci->hcs_params1)) { 696839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp xhci_dbg(xhci, "Bad real port.\n"); 697839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp return; 698839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp } 699839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp 700839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp tt_list_head = &(xhci->rh_bw[virt_dev->real_port - 1].tts); 701839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp if (list_empty(tt_list_head)) 702839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp return; 703839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp 704839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp list_for_each(tt, tt_list_head) { 705839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp tt_info = list_entry(tt, struct xhci_tt_bw_info, tt_list); 706839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp if (tt_info->slot_id == slot_id) 707839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp break; 708839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp } 709839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp /* Cautionary measure in case the hub was disconnected before we 710839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp * stored the TT information. 711839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp */ 712839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp if (tt_info->slot_id != slot_id) 713839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp return; 714839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp 715839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp tt_next = tt->next; 716839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp tt_info = list_entry(tt, struct xhci_tt_bw_info, 717839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp tt_list); 718839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp /* Multi-TT hubs will have more than one entry */ 719839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp do { 720839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp list_del(tt); 721839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp kfree(tt_info); 722839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp tt = tt_next; 723839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp if (list_empty(tt_list_head)) 724839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp break; 725839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp tt_next = tt->next; 726839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp tt_info = list_entry(tt, struct xhci_tt_bw_info, 727839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp tt_list); 728839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp } while (tt_info->slot_id == slot_id); 729839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp} 730839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp 731839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharpint xhci_alloc_tt_info(struct xhci_hcd *xhci, 732839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp struct xhci_virt_device *virt_dev, 733839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp struct usb_device *hdev, 734839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp struct usb_tt *tt, gfp_t mem_flags) 735839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp{ 736839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp struct xhci_tt_bw_info *tt_info; 737839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp unsigned int num_ports; 738839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp int i, j; 739839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp 740839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp if (!tt->multi) 741839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp num_ports = 1; 742839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp else 743839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp num_ports = hdev->maxchild; 744839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp 745839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp for (i = 0; i < num_ports; i++, tt_info++) { 746839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp struct xhci_interval_bw_table *bw_table; 747839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp 748839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp tt_info = kzalloc(sizeof(*tt_info), mem_flags); 749839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp if (!tt_info) 750839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp goto free_tts; 751839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp INIT_LIST_HEAD(&tt_info->tt_list); 752839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp list_add(&tt_info->tt_list, 753839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp &xhci->rh_bw[virt_dev->real_port - 1].tts); 754839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp tt_info->slot_id = virt_dev->udev->slot_id; 755839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp if (tt->multi) 756839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp tt_info->ttport = i+1; 757839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp bw_table = &tt_info->bw_table; 758839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp for (j = 0; j < XHCI_MAX_INTERVAL; j++) 759839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp INIT_LIST_HEAD(&bw_table->interval_bw[j].endpoints); 760839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp } 761839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp return 0; 762839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp 763839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharpfree_tts: 764839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp xhci_free_tt_info(xhci, virt_dev, virt_dev->udev->slot_id); 765839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp return -ENOMEM; 766839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp} 767839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp 768839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp 769839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp/* All the xhci_tds in the ring's TD list should be freed at this point. 770839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp * Should be called with xhci->lock held if there is any chance the TT lists 771839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp * will be manipulated by the configure endpoint, allocate device, or update 772839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp * hub functions while this function is removing the TT entries from the list. 773839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp */ 7743ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharpvoid xhci_free_virt_device(struct xhci_hcd *xhci, int slot_id) 7753ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp{ 7763ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp struct xhci_virt_device *dev; 7773ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp int i; 7782e27980e6eb78114c4ecbaad1ba71836e3887d18Sarah Sharp int old_active_eps = 0; 7793ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 7803ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Slot ID 0 is reserved */ 7813ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (slot_id == 0 || !xhci->devs[slot_id]) 7823ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp return; 7833ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 7843ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dev = xhci->devs[slot_id]; 7858e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp xhci->dcbaa->dev_context_ptrs[slot_id] = 0; 7863ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (!dev) 7873ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp return; 7883ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 7892e27980e6eb78114c4ecbaad1ba71836e3887d18Sarah Sharp if (dev->tt_info) 7902e27980e6eb78114c4ecbaad1ba71836e3887d18Sarah Sharp old_active_eps = dev->tt_info->active_eps; 7912e27980e6eb78114c4ecbaad1ba71836e3887d18Sarah Sharp 7928df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp for (i = 0; i < 31; ++i) { 79363a0d9abd18cdcf5a985029c266c6bfe0511768fSarah Sharp if (dev->eps[i].ring) 79463a0d9abd18cdcf5a985029c266c6bfe0511768fSarah Sharp xhci_ring_free(xhci, dev->eps[i].ring); 7958df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (dev->eps[i].stream_info) 7968df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_free_stream_info(xhci, 7978df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp dev->eps[i].stream_info); 7982e27980e6eb78114c4ecbaad1ba71836e3887d18Sarah Sharp /* Endpoints on the TT/root port lists should have been removed 7992e27980e6eb78114c4ecbaad1ba71836e3887d18Sarah Sharp * when usb_disable_device() was called for the device. 8002e27980e6eb78114c4ecbaad1ba71836e3887d18Sarah Sharp * We can't drop them anyway, because the udev might have gone 8012e27980e6eb78114c4ecbaad1ba71836e3887d18Sarah Sharp * away by this point, and we can't tell what speed it was. 8022e27980e6eb78114c4ecbaad1ba71836e3887d18Sarah Sharp */ 8032e27980e6eb78114c4ecbaad1ba71836e3887d18Sarah Sharp if (!list_empty(&dev->eps[i].bw_endpoint_list)) 8042e27980e6eb78114c4ecbaad1ba71836e3887d18Sarah Sharp xhci_warn(xhci, "Slot %u endpoint %u " 8052e27980e6eb78114c4ecbaad1ba71836e3887d18Sarah Sharp "not removed from BW list!\n", 8062e27980e6eb78114c4ecbaad1ba71836e3887d18Sarah Sharp slot_id, i); 8078df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp } 808839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp /* If this is a hub, free the TT(s) from the TT list */ 809839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp xhci_free_tt_info(xhci, dev, slot_id); 8102e27980e6eb78114c4ecbaad1ba71836e3887d18Sarah Sharp /* If necessary, update the number of active TTs on this root port */ 8112e27980e6eb78114c4ecbaad1ba71836e3887d18Sarah Sharp xhci_update_tt_active_eps(xhci, dev, old_active_eps); 8123ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 81374f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp if (dev->ring_cache) { 81474f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp for (i = 0; i < dev->num_rings_cached; i++) 81574f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp xhci_ring_free(xhci, dev->ring_cache[i]); 81674f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp kfree(dev->ring_cache); 81774f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp } 81874f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp 8193ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (dev->in_ctx) 820d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn xhci_free_container_ctx(xhci, dev->in_ctx); 8213ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (dev->out_ctx) 822d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn xhci_free_container_ctx(xhci, dev->out_ctx); 823d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn 8243ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp kfree(xhci->devs[slot_id]); 825326b4810cc995209e31136af4202ed0414814ed5Randy Dunlap xhci->devs[slot_id] = NULL; 8263ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp} 8273ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 8283ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharpint xhci_alloc_virt_device(struct xhci_hcd *xhci, int slot_id, 8293ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp struct usb_device *udev, gfp_t flags) 8303ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp{ 8313ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp struct xhci_virt_device *dev; 83263a0d9abd18cdcf5a985029c266c6bfe0511768fSarah Sharp int i; 8333ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 8343ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Slot ID 0 is reserved */ 8353ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (slot_id == 0 || xhci->devs[slot_id]) { 8363ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci_warn(xhci, "Bad Slot ID %d\n", slot_id); 8373ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp return 0; 8383ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp } 8393ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 8403ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci->devs[slot_id] = kzalloc(sizeof(*xhci->devs[slot_id]), flags); 8413ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (!xhci->devs[slot_id]) 8423ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp return 0; 8433ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dev = xhci->devs[slot_id]; 8443ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 845d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn /* Allocate the (output) device context that will be used in the HC. */ 846d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn dev->out_ctx = xhci_alloc_container_ctx(xhci, XHCI_CTX_TYPE_DEVICE, flags); 8473ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (!dev->out_ctx) 8483ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp goto fail; 849d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn 850700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "Slot %d output ctx = 0x%llx (dma)\n", slot_id, 851d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn (unsigned long long)dev->out_ctx->dma); 8523ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 8533ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Allocate the (input) device context for address device command */ 854d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn dev->in_ctx = xhci_alloc_container_ctx(xhci, XHCI_CTX_TYPE_INPUT, flags); 8553ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (!dev->in_ctx) 8563ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp goto fail; 857d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn 858700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "Slot %d input ctx = 0x%llx (dma)\n", slot_id, 859d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn (unsigned long long)dev->in_ctx->dma); 8603ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 8616f5165cf989387e84ef23122330b27cca1cbe831Sarah Sharp /* Initialize the cancellation list and watchdog timers for each ep */ 8626f5165cf989387e84ef23122330b27cca1cbe831Sarah Sharp for (i = 0; i < 31; i++) { 8636f5165cf989387e84ef23122330b27cca1cbe831Sarah Sharp xhci_init_endpoint_timer(xhci, &dev->eps[i]); 86463a0d9abd18cdcf5a985029c266c6bfe0511768fSarah Sharp INIT_LIST_HEAD(&dev->eps[i].cancelled_td_list); 8652e27980e6eb78114c4ecbaad1ba71836e3887d18Sarah Sharp INIT_LIST_HEAD(&dev->eps[i].bw_endpoint_list); 8666f5165cf989387e84ef23122330b27cca1cbe831Sarah Sharp } 86763a0d9abd18cdcf5a985029c266c6bfe0511768fSarah Sharp 8683ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Allocate endpoint 0 ring */ 8693b72fca09d7aed0c1a390370eb3f3f4f0480702aAndiry Xu dev->eps[0].ring = xhci_ring_alloc(xhci, 1, TYPE_CTRL, flags); 87063a0d9abd18cdcf5a985029c266c6bfe0511768fSarah Sharp if (!dev->eps[0].ring) 8713ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp goto fail; 8723ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 87374f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp /* Allocate pointers to the ring cache */ 87474f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp dev->ring_cache = kzalloc( 87574f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp sizeof(struct xhci_ring *)*XHCI_MAX_RINGS_CACHED, 87674f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp flags); 87774f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp if (!dev->ring_cache) 87874f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp goto fail; 87974f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp dev->num_rings_cached = 0; 88074f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp 881f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp init_completion(&dev->cmd_completion); 882913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp INIT_LIST_HEAD(&dev->cmd_list); 88364927730c66333c9d5987aa72a0e6d44ed91cec7Andiry Xu dev->udev = udev; 884f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 88528c2d2efb48dec2f0b050affae6d5787d6449e47Sarah Sharp /* Point to output device context in dcbaa. */ 88628ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans xhci->dcbaa->dev_context_ptrs[slot_id] = cpu_to_le64(dev->out_ctx->dma); 887700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "Set slot id %d dcbaa entry %p to 0x%llx\n", 88828ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans slot_id, 88928ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans &xhci->dcbaa->dev_context_ptrs[slot_id], 890f5960b698eb50a39fce1a066dc19a6a5a1148e16Matt Evans le64_to_cpu(xhci->dcbaa->dev_context_ptrs[slot_id])); 8913ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 8923ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp return 1; 8933ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharpfail: 8943ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci_free_virt_device(xhci, slot_id); 8953ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp return 0; 8963ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp} 8973ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 8982d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharpvoid xhci_copy_ep0_dequeue_into_input_ctx(struct xhci_hcd *xhci, 8992d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp struct usb_device *udev) 9002d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp{ 9012d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp struct xhci_virt_device *virt_dev; 9022d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp struct xhci_ep_ctx *ep0_ctx; 9032d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp struct xhci_ring *ep_ring; 9042d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp 9052d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp virt_dev = xhci->devs[udev->slot_id]; 9062d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp ep0_ctx = xhci_get_ep_ctx(xhci, virt_dev->in_ctx, 0); 9072d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp ep_ring = virt_dev->eps[0].ring; 9082d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp /* 9092d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp * FIXME we don't keep track of the dequeue pointer very well after a 9102d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp * Set TR dequeue pointer, so we're setting the dequeue pointer of the 9112d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp * host to our enqueue pointer. This should only be called after a 9122d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp * configured device has reset, so all control transfers should have 9132d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp * been completed or cancelled before the reset. 9142d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp */ 91528ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans ep0_ctx->deq = cpu_to_le64(xhci_trb_virt_to_dma(ep_ring->enq_seg, 91628ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans ep_ring->enqueue) 91728ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans | ep_ring->cycle_state); 9182d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp} 9192d1ee5904bb51ea33c6a6f4bec6b6a243e2432a8Sarah Sharp 920f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp/* 921f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp * The xHCI roothub may have ports of differing speeds in any order in the port 922f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp * status registers. xhci->port_array provides an array of the port speed for 923f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp * each offset into the port status registers. 924f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp * 925f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp * The xHCI hardware wants to know the roothub port number that the USB device 926f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp * is attached to (or the roothub port its ancestor hub is attached to). All we 927f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp * know is the index of that port under either the USB 2.0 or the USB 3.0 928f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp * roothub, but that doesn't give us the real index into the HW port status 929f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp * registers. Scan through the xHCI roothub port array, looking for the Nth 930f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp * entry of the correct port speed. Return the port number of that entry. 931f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp */ 932f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharpstatic u32 xhci_find_real_port_number(struct xhci_hcd *xhci, 933f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp struct usb_device *udev) 934f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp{ 935f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp struct usb_device *top_dev; 936f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp unsigned int num_similar_speed_ports; 937f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp unsigned int faked_port_num; 938f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp int i; 939f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp 940f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp for (top_dev = udev; top_dev->parent && top_dev->parent->parent; 941f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp top_dev = top_dev->parent) 942f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp /* Found device below root hub */; 943f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp faked_port_num = top_dev->portnum; 944f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp for (i = 0, num_similar_speed_ports = 0; 945f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp i < HCS_MAX_PORTS(xhci->hcs_params1); i++) { 946f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp u8 port_speed = xhci->port_array[i]; 947f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp 948f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp /* 949f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp * Skip ports that don't have known speeds, or have duplicate 950f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp * Extended Capabilities port speed entries. 951f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp */ 95222e0487047567252d5677ff35766cd884375efc2Dan Carpenter if (port_speed == 0 || port_speed == DUPLICATE_ENTRY) 953f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp continue; 954f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp 955f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp /* 956f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp * USB 3.0 ports are always under a USB 3.0 hub. USB 2.0 and 957f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp * 1.1 ports are under the USB 2.0 hub. If the port speed 958f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp * matches the device speed, it's a similar speed port. 959f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp */ 960f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp if ((port_speed == 0x03) == (udev->speed == USB_SPEED_SUPER)) 961f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp num_similar_speed_ports++; 962f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp if (num_similar_speed_ports == faked_port_num) 963f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp /* Roothub ports are numbered from 1 to N */ 964f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp return i+1; 965f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp } 966f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp return 0; 967f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp} 968f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp 9693ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp/* Setup an xHCI virtual device for a Set Address command */ 9703ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharpint xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *udev) 9713ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp{ 9723ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp struct xhci_virt_device *dev; 9733ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp struct xhci_ep_ctx *ep0_ctx; 974d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn struct xhci_slot_ctx *slot_ctx; 975f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp u32 port_num; 976f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp struct usb_device *top_dev; 9773ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 9783ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dev = xhci->devs[udev->slot_id]; 9793ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Slot ID 0 is reserved */ 9803ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (udev->slot_id == 0 || !dev) { 9813ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci_warn(xhci, "Slot ID %d is not assigned to this device\n", 9823ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp udev->slot_id); 9833ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp return -EINVAL; 9843ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp } 985d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn ep0_ctx = xhci_get_ep_ctx(xhci, dev->in_ctx, 0); 986d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn slot_ctx = xhci_get_slot_ctx(xhci, dev->in_ctx); 9873ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 9883ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* 3) Only the control endpoint is valid - one endpoint context */ 989f5960b698eb50a39fce1a066dc19a6a5a1148e16Matt Evans slot_ctx->dev_info |= cpu_to_le32(LAST_CTX(1) | udev->route); 9903ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp switch (udev->speed) { 9913ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp case USB_SPEED_SUPER: 992f5960b698eb50a39fce1a066dc19a6a5a1148e16Matt Evans slot_ctx->dev_info |= cpu_to_le32(SLOT_SPEED_SS); 9933ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp break; 9943ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp case USB_SPEED_HIGH: 995f5960b698eb50a39fce1a066dc19a6a5a1148e16Matt Evans slot_ctx->dev_info |= cpu_to_le32(SLOT_SPEED_HS); 9963ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp break; 9973ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp case USB_SPEED_FULL: 998f5960b698eb50a39fce1a066dc19a6a5a1148e16Matt Evans slot_ctx->dev_info |= cpu_to_le32(SLOT_SPEED_FS); 9993ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp break; 10003ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp case USB_SPEED_LOW: 1001f5960b698eb50a39fce1a066dc19a6a5a1148e16Matt Evans slot_ctx->dev_info |= cpu_to_le32(SLOT_SPEED_LS); 10023ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp break; 1003551cdbbeb118bd5ed301f8749aef69219284399bGreg Kroah-Hartman case USB_SPEED_WIRELESS: 10043ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci_dbg(xhci, "FIXME xHCI doesn't support wireless speeds\n"); 10053ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp return -EINVAL; 10063ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp break; 10073ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp default: 10083ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Speed was set earlier, this shouldn't happen. */ 10093ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp BUG(); 10103ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp } 10113ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Find the root hub port this device is under */ 1012f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp port_num = xhci_find_real_port_number(xhci, udev); 1013f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp if (!port_num) 1014f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp return -EINVAL; 1015f5960b698eb50a39fce1a066dc19a6a5a1148e16Matt Evans slot_ctx->dev_info2 |= cpu_to_le32(ROOT_HUB_PORT(port_num)); 1016f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp /* Set the port number in the virtual_device to the faked port number */ 10173ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp for (top_dev = udev; top_dev->parent && top_dev->parent->parent; 10183ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp top_dev = top_dev->parent) 10193ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Found device below root hub */; 1020fe30182c2553f491e5dc12074c8e52163d3bfbc7Sarah Sharp dev->fake_port = top_dev->portnum; 102166381755442189bbeb15f1a51b1e0059327d84edSarah Sharp dev->real_port = port_num; 1022f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp xhci_dbg(xhci, "Set root hub portnum to %d\n", port_num); 1023fe30182c2553f491e5dc12074c8e52163d3bfbc7Sarah Sharp xhci_dbg(xhci, "Set fake root hub portnum to %d\n", dev->fake_port); 10243ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 1025839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp /* Find the right bandwidth table that this device will be a part of. 1026839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp * If this is a full speed device attached directly to a root port (or a 1027839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp * decendent of one), it counts as a primary bandwidth domain, not a 1028839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp * secondary bandwidth domain under a TT. An xhci_tt_info structure 1029839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp * will never be created for the HS root hub. 1030839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp */ 1031839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp if (!udev->tt || !udev->tt->hub->parent) { 1032839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp dev->bw_table = &xhci->rh_bw[port_num - 1].bw_table; 1033839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp } else { 1034839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp struct xhci_root_port_bw_info *rh_bw; 1035839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp struct xhci_tt_bw_info *tt_bw; 1036839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp 1037839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp rh_bw = &xhci->rh_bw[port_num - 1]; 1038839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp /* Find the right TT. */ 1039839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp list_for_each_entry(tt_bw, &rh_bw->tts, tt_list) { 1040839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp if (tt_bw->slot_id != udev->tt->hub->slot_id) 1041839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp continue; 1042839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp 1043839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp if (!dev->udev->tt->multi || 1044839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp (udev->tt->multi && 1045839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp tt_bw->ttport == dev->udev->ttport)) { 1046839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp dev->bw_table = &tt_bw->bw_table; 1047839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp dev->tt_info = tt_bw; 1048839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp break; 1049839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp } 1050839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp } 1051839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp if (!dev->tt_info) 1052839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp xhci_warn(xhci, "WARN: Didn't find a matching TT\n"); 1053839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp } 1054839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp 1055aa1b13efb7cfa9f7bf4942c1e858463e335c9500Sarah Sharp /* Is this a LS/FS device under an external HS hub? */ 1056aa1b13efb7cfa9f7bf4942c1e858463e335c9500Sarah Sharp if (udev->tt && udev->tt->hub->parent) { 105728ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans slot_ctx->tt_info = cpu_to_le32(udev->tt->hub->slot_id | 105828ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans (udev->ttport << 8)); 105907b6de102843b717ecd962cf35ec4ad9b1fbed9dSarah Sharp if (udev->tt->multi) 106028ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans slot_ctx->dev_info |= cpu_to_le32(DEV_MTT); 10613ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp } 1062700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "udev->tt = %p\n", udev->tt); 10633ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci_dbg(xhci, "udev->ttport = 0x%x\n", udev->ttport); 10643ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 10653ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Step 4 - ring already allocated */ 10663ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Step 5 */ 106728ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans ep0_ctx->ep_info2 = cpu_to_le32(EP_TYPE(CTRL_EP)); 10683ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* 10693ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp * XXX: Not sure about wireless USB devices. 10703ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp */ 107147aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp switch (udev->speed) { 107247aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp case USB_SPEED_SUPER: 107328ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans ep0_ctx->ep_info2 |= cpu_to_le32(MAX_PACKET(512)); 107447aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp break; 107547aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp case USB_SPEED_HIGH: 107647aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp /* USB core guesses at a 64-byte max packet first for FS devices */ 107747aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp case USB_SPEED_FULL: 107828ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans ep0_ctx->ep_info2 |= cpu_to_le32(MAX_PACKET(64)); 107947aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp break; 108047aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp case USB_SPEED_LOW: 108128ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans ep0_ctx->ep_info2 |= cpu_to_le32(MAX_PACKET(8)); 108247aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp break; 1083551cdbbeb118bd5ed301f8749aef69219284399bGreg Kroah-Hartman case USB_SPEED_WIRELESS: 108447aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp xhci_dbg(xhci, "FIXME xHCI doesn't support wireless speeds\n"); 108547aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp return -EINVAL; 108647aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp break; 108747aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp default: 108847aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp /* New speed? */ 108947aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp BUG(); 109047aded8ade9fee6779b121b2b156235f261239d7Sarah Sharp } 10913ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* EP 0 can handle "burst" sizes of 1, so Max Burst Size field is 0 */ 109228ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans ep0_ctx->ep_info2 |= cpu_to_le32(MAX_BURST(0) | ERROR_COUNT(3)); 10933ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 109428ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans ep0_ctx->deq = cpu_to_le64(dev->eps[0].ring->first_seg->dma | 109528ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans dev->eps[0].ring->cycle_state); 10963ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 10973ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Steps 7 and 8 were done in xhci_alloc_virt_device() */ 10983ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 10993ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp return 0; 11003ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp} 11013ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 1102dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov/* 1103dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov * Convert interval expressed as 2^(bInterval - 1) == interval into 1104dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov * straight exponent value 2^n == interval. 1105dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov * 1106dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov */ 1107dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhovstatic unsigned int xhci_parse_exponent_interval(struct usb_device *udev, 1108dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov struct usb_host_endpoint *ep) 1109dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov{ 1110dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov unsigned int interval; 1111dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov 1112dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov interval = clamp_val(ep->desc.bInterval, 1, 16) - 1; 1113dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov if (interval != ep->desc.bInterval - 1) 1114dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov dev_warn(&udev->dev, 1115cd3c18ba2fac14b34d03cae111f215009735ea06Dmitry Torokhov "ep %#x - rounding interval to %d %sframes\n", 1116dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov ep->desc.bEndpointAddress, 1117cd3c18ba2fac14b34d03cae111f215009735ea06Dmitry Torokhov 1 << interval, 1118cd3c18ba2fac14b34d03cae111f215009735ea06Dmitry Torokhov udev->speed == USB_SPEED_FULL ? "" : "micro"); 1119cd3c18ba2fac14b34d03cae111f215009735ea06Dmitry Torokhov 1120cd3c18ba2fac14b34d03cae111f215009735ea06Dmitry Torokhov if (udev->speed == USB_SPEED_FULL) { 1121cd3c18ba2fac14b34d03cae111f215009735ea06Dmitry Torokhov /* 1122cd3c18ba2fac14b34d03cae111f215009735ea06Dmitry Torokhov * Full speed isoc endpoints specify interval in frames, 1123cd3c18ba2fac14b34d03cae111f215009735ea06Dmitry Torokhov * not microframes. We are using microframes everywhere, 1124cd3c18ba2fac14b34d03cae111f215009735ea06Dmitry Torokhov * so adjust accordingly. 1125cd3c18ba2fac14b34d03cae111f215009735ea06Dmitry Torokhov */ 1126cd3c18ba2fac14b34d03cae111f215009735ea06Dmitry Torokhov interval += 3; /* 1 frame = 2^3 uframes */ 1127cd3c18ba2fac14b34d03cae111f215009735ea06Dmitry Torokhov } 1128dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov 1129dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov return interval; 1130dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov} 1131dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov 1132dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov/* 1133340a3504fd39dad753ba908fb6f894ee81fc3ae2Sarah Sharp * Convert bInterval expressed in microframes (in 1-255 range) to exponent of 1134dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov * microframes, rounded down to nearest power of 2. 1135dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov */ 1136340a3504fd39dad753ba908fb6f894ee81fc3ae2Sarah Sharpstatic unsigned int xhci_microframes_to_exponent(struct usb_device *udev, 1137340a3504fd39dad753ba908fb6f894ee81fc3ae2Sarah Sharp struct usb_host_endpoint *ep, unsigned int desc_interval, 1138340a3504fd39dad753ba908fb6f894ee81fc3ae2Sarah Sharp unsigned int min_exponent, unsigned int max_exponent) 1139dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov{ 1140dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov unsigned int interval; 1141dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov 1142340a3504fd39dad753ba908fb6f894ee81fc3ae2Sarah Sharp interval = fls(desc_interval) - 1; 1143340a3504fd39dad753ba908fb6f894ee81fc3ae2Sarah Sharp interval = clamp_val(interval, min_exponent, max_exponent); 1144340a3504fd39dad753ba908fb6f894ee81fc3ae2Sarah Sharp if ((1 << interval) != desc_interval) 1145dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov dev_warn(&udev->dev, 1146dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov "ep %#x - rounding interval to %d microframes, ep desc says %d microframes\n", 1147dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov ep->desc.bEndpointAddress, 1148dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov 1 << interval, 1149340a3504fd39dad753ba908fb6f894ee81fc3ae2Sarah Sharp desc_interval); 1150dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov 1151dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov return interval; 1152dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov} 1153dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov 1154340a3504fd39dad753ba908fb6f894ee81fc3ae2Sarah Sharpstatic unsigned int xhci_parse_microframe_interval(struct usb_device *udev, 1155340a3504fd39dad753ba908fb6f894ee81fc3ae2Sarah Sharp struct usb_host_endpoint *ep) 1156340a3504fd39dad753ba908fb6f894ee81fc3ae2Sarah Sharp{ 1157340a3504fd39dad753ba908fb6f894ee81fc3ae2Sarah Sharp return xhci_microframes_to_exponent(udev, ep, 1158340a3504fd39dad753ba908fb6f894ee81fc3ae2Sarah Sharp ep->desc.bInterval, 0, 15); 1159340a3504fd39dad753ba908fb6f894ee81fc3ae2Sarah Sharp} 1160340a3504fd39dad753ba908fb6f894ee81fc3ae2Sarah Sharp 1161340a3504fd39dad753ba908fb6f894ee81fc3ae2Sarah Sharp 1162340a3504fd39dad753ba908fb6f894ee81fc3ae2Sarah Sharpstatic unsigned int xhci_parse_frame_interval(struct usb_device *udev, 1163340a3504fd39dad753ba908fb6f894ee81fc3ae2Sarah Sharp struct usb_host_endpoint *ep) 1164340a3504fd39dad753ba908fb6f894ee81fc3ae2Sarah Sharp{ 1165340a3504fd39dad753ba908fb6f894ee81fc3ae2Sarah Sharp return xhci_microframes_to_exponent(udev, ep, 1166340a3504fd39dad753ba908fb6f894ee81fc3ae2Sarah Sharp ep->desc.bInterval * 8, 3, 10); 1167340a3504fd39dad753ba908fb6f894ee81fc3ae2Sarah Sharp} 1168340a3504fd39dad753ba908fb6f894ee81fc3ae2Sarah Sharp 1169f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp/* Return the polling or NAK interval. 1170f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp * 1171f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp * The polling interval is expressed in "microframes". If xHCI's Interval field 1172f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp * is set to N, it will service the endpoint every 2^(Interval)*125us. 1173f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp * 1174f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp * The NAK interval is one NAK per 1 to 255 microframes, or no NAKs if interval 1175f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp * is set to 0. 1176f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp */ 1177575688e1e5f462c44ddd608ce3ec9f38b64c3c0dDmitry Torokhovstatic unsigned int xhci_get_endpoint_interval(struct usb_device *udev, 1178f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp struct usb_host_endpoint *ep) 1179f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp{ 1180f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp unsigned int interval = 0; 1181f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 1182f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp switch (udev->speed) { 1183f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp case USB_SPEED_HIGH: 1184f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp /* Max NAK rate */ 1185f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (usb_endpoint_xfer_control(&ep->desc) || 1186dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov usb_endpoint_xfer_bulk(&ep->desc)) { 1187340a3504fd39dad753ba908fb6f894ee81fc3ae2Sarah Sharp interval = xhci_parse_microframe_interval(udev, ep); 1188dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov break; 1189dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov } 1190f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp /* Fall through - SS and HS isoc/int have same decoding */ 1191dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov 1192f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp case USB_SPEED_SUPER: 1193f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (usb_endpoint_xfer_int(&ep->desc) || 1194dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov usb_endpoint_xfer_isoc(&ep->desc)) { 1195dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov interval = xhci_parse_exponent_interval(udev, ep); 1196f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp } 1197f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp break; 1198dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov 1199f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp case USB_SPEED_FULL: 1200b513d44751bfb609a3c20463f764c8ce822d63e9Sarah Sharp if (usb_endpoint_xfer_isoc(&ep->desc)) { 1201dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov interval = xhci_parse_exponent_interval(udev, ep); 1202dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov break; 1203dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov } 1204dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov /* 1205b513d44751bfb609a3c20463f764c8ce822d63e9Sarah Sharp * Fall through for interrupt endpoint interval decoding 1206dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov * since it uses the same rules as low speed interrupt 1207dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov * endpoints. 1208dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov */ 1209dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov 1210f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp case USB_SPEED_LOW: 1211f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (usb_endpoint_xfer_int(&ep->desc) || 1212dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov usb_endpoint_xfer_isoc(&ep->desc)) { 1213dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov 1214dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov interval = xhci_parse_frame_interval(udev, ep); 1215f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp } 1216f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp break; 1217dfa49c4ad120a784ef1ff0717168aa79f55a483aDmitry Torokhov 1218f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp default: 1219f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp BUG(); 1220f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp } 1221f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp return EP_INTERVAL(interval); 1222f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp} 1223f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 1224c30c791c946a14a03e87819eced562ed28711961Sarah Sharp/* The "Mult" field in the endpoint context is only set for SuperSpeed isoc eps. 12251cf62246c0e394021e494e0a8f1013e80db1a1a9Sarah Sharp * High speed endpoint descriptors can define "the number of additional 12261cf62246c0e394021e494e0a8f1013e80db1a1a9Sarah Sharp * transaction opportunities per microframe", but that goes in the Max Burst 12271cf62246c0e394021e494e0a8f1013e80db1a1a9Sarah Sharp * endpoint context field. 12281cf62246c0e394021e494e0a8f1013e80db1a1a9Sarah Sharp */ 1229575688e1e5f462c44ddd608ce3ec9f38b64c3c0dDmitry Torokhovstatic u32 xhci_get_endpoint_mult(struct usb_device *udev, 12301cf62246c0e394021e494e0a8f1013e80db1a1a9Sarah Sharp struct usb_host_endpoint *ep) 12311cf62246c0e394021e494e0a8f1013e80db1a1a9Sarah Sharp{ 1232c30c791c946a14a03e87819eced562ed28711961Sarah Sharp if (udev->speed != USB_SPEED_SUPER || 1233c30c791c946a14a03e87819eced562ed28711961Sarah Sharp !usb_endpoint_xfer_isoc(&ep->desc)) 12341cf62246c0e394021e494e0a8f1013e80db1a1a9Sarah Sharp return 0; 1235842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8Alan Stern return ep->ss_ep_comp.bmAttributes; 12361cf62246c0e394021e494e0a8f1013e80db1a1a9Sarah Sharp} 12371cf62246c0e394021e494e0a8f1013e80db1a1a9Sarah Sharp 1238575688e1e5f462c44ddd608ce3ec9f38b64c3c0dDmitry Torokhovstatic u32 xhci_get_endpoint_type(struct usb_device *udev, 1239f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp struct usb_host_endpoint *ep) 1240f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp{ 1241f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp int in; 1242f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp u32 type; 1243f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 1244f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp in = usb_endpoint_dir_in(&ep->desc); 1245f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (usb_endpoint_xfer_control(&ep->desc)) { 1246f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp type = EP_TYPE(CTRL_EP); 1247f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp } else if (usb_endpoint_xfer_bulk(&ep->desc)) { 1248f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (in) 1249f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp type = EP_TYPE(BULK_IN_EP); 1250f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp else 1251f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp type = EP_TYPE(BULK_OUT_EP); 1252f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp } else if (usb_endpoint_xfer_isoc(&ep->desc)) { 1253f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (in) 1254f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp type = EP_TYPE(ISOC_IN_EP); 1255f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp else 1256f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp type = EP_TYPE(ISOC_OUT_EP); 1257f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp } else if (usb_endpoint_xfer_int(&ep->desc)) { 1258f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (in) 1259f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp type = EP_TYPE(INT_IN_EP); 1260f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp else 1261f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp type = EP_TYPE(INT_OUT_EP); 1262f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp } else { 1263f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp BUG(); 1264f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp } 1265f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp return type; 1266f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp} 1267f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 12689238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp/* Return the maximum endpoint service interval time (ESIT) payload. 12699238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp * Basically, this is the maxpacket size, multiplied by the burst size 12709238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp * and mult size. 12719238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp */ 1272575688e1e5f462c44ddd608ce3ec9f38b64c3c0dDmitry Torokhovstatic u32 xhci_get_max_esit_payload(struct xhci_hcd *xhci, 12739238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp struct usb_device *udev, 12749238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp struct usb_host_endpoint *ep) 12759238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp{ 12769238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp int max_burst; 12779238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp int max_packet; 12789238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp 12799238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp /* Only applies for interrupt or isochronous endpoints */ 12809238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp if (usb_endpoint_xfer_control(&ep->desc) || 12819238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp usb_endpoint_xfer_bulk(&ep->desc)) 12829238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp return 0; 12839238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp 1284842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8Alan Stern if (udev->speed == USB_SPEED_SUPER) 128564b3c304bed25388fed48dbdc098dfcad7063d9cSebastian Andrzej Siewior return le16_to_cpu(ep->ss_ep_comp.wBytesPerInterval); 12869238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp 128729cc88979a8818cd8c5019426e945aed118b400eKuninori Morimoto max_packet = GET_MAX_PACKET(usb_endpoint_maxp(&ep->desc)); 128829cc88979a8818cd8c5019426e945aed118b400eKuninori Morimoto max_burst = (usb_endpoint_maxp(&ep->desc) & 0x1800) >> 11; 12899238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp /* A 0 in max burst means 1 transfer per ESIT */ 12909238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp return max_packet * (max_burst + 1); 12919238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp} 12929238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp 12938df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp/* Set up an endpoint with one ring segment. Do not allocate stream rings. 12948df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * Drivers will have to call usb_alloc_streams() to do that. 12958df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp */ 1296f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharpint xhci_endpoint_init(struct xhci_hcd *xhci, 1297f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp struct xhci_virt_device *virt_dev, 1298f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp struct usb_device *udev, 1299f88ba78d9ac0e1f583da4cada80b8816ca761a3fSarah Sharp struct usb_host_endpoint *ep, 1300f88ba78d9ac0e1f583da4cada80b8816ca761a3fSarah Sharp gfp_t mem_flags) 1301f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp{ 1302f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp unsigned int ep_index; 1303f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp struct xhci_ep_ctx *ep_ctx; 1304f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp struct xhci_ring *ep_ring; 1305f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp unsigned int max_packet; 1306f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp unsigned int max_burst; 13073b72fca09d7aed0c1a390370eb3f3f4f0480702aAndiry Xu enum xhci_ring_type type; 13089238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp u32 max_esit_payload; 1309f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 1310f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp ep_index = xhci_get_endpoint_index(&ep->desc); 1311d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn ep_ctx = xhci_get_ep_ctx(xhci, virt_dev->in_ctx, ep_index); 1312f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 13133b72fca09d7aed0c1a390370eb3f3f4f0480702aAndiry Xu type = usb_endpoint_type(&ep->desc); 1314f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp /* Set up the endpoint ring */ 1315a061a5a0b816de3b4711a2e96764bb3cd8df861eAndiry Xu /* 1316a061a5a0b816de3b4711a2e96764bb3cd8df861eAndiry Xu * Isochronous endpoint ring needs bigger size because one isoc URB 1317a061a5a0b816de3b4711a2e96764bb3cd8df861eAndiry Xu * carries multiple packets and it will insert multiple tds to the 1318a061a5a0b816de3b4711a2e96764bb3cd8df861eAndiry Xu * ring. 1319a061a5a0b816de3b4711a2e96764bb3cd8df861eAndiry Xu * This should be replaced with dynamic ring resizing in the future. 1320a061a5a0b816de3b4711a2e96764bb3cd8df861eAndiry Xu */ 1321a061a5a0b816de3b4711a2e96764bb3cd8df861eAndiry Xu if (usb_endpoint_xfer_isoc(&ep->desc)) 1322a061a5a0b816de3b4711a2e96764bb3cd8df861eAndiry Xu virt_dev->eps[ep_index].new_ring = 13233b72fca09d7aed0c1a390370eb3f3f4f0480702aAndiry Xu xhci_ring_alloc(xhci, 8, type, mem_flags); 1324a061a5a0b816de3b4711a2e96764bb3cd8df861eAndiry Xu else 1325a061a5a0b816de3b4711a2e96764bb3cd8df861eAndiry Xu virt_dev->eps[ep_index].new_ring = 13263b72fca09d7aed0c1a390370eb3f3f4f0480702aAndiry Xu xhci_ring_alloc(xhci, 1, type, mem_flags); 132774f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp if (!virt_dev->eps[ep_index].new_ring) { 132874f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp /* Attempt to use the ring cache */ 132974f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp if (virt_dev->num_rings_cached == 0) 133074f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp return -ENOMEM; 133174f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp virt_dev->eps[ep_index].new_ring = 133274f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp virt_dev->ring_cache[virt_dev->num_rings_cached]; 133374f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp virt_dev->ring_cache[virt_dev->num_rings_cached] = NULL; 133474f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp virt_dev->num_rings_cached--; 13357e393a834b41001174a8fb3ae3bc23a749467760Andiry Xu xhci_reinit_cached_ring(xhci, virt_dev->eps[ep_index].new_ring, 13363b72fca09d7aed0c1a390370eb3f3f4f0480702aAndiry Xu type); 133774f9fe21e0440066eb337b9f644238cb3050b91cSarah Sharp } 1338d18240db797ed749b511b8dc910c5dcf08be46d6Andiry Xu virt_dev->eps[ep_index].skip = false; 133963a0d9abd18cdcf5a985029c266c6bfe0511768fSarah Sharp ep_ring = virt_dev->eps[ep_index].new_ring; 134028ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans ep_ctx->deq = cpu_to_le64(ep_ring->first_seg->dma | ep_ring->cycle_state); 1341f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 134228ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans ep_ctx->ep_info = cpu_to_le32(xhci_get_endpoint_interval(udev, ep) 134328ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans | EP_MULT(xhci_get_endpoint_mult(udev, ep))); 1344f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 1345f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp /* FIXME dig Mult and streams info out of ep companion desc */ 1346f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 134747692d179f7a88794bcd302e53ca7899d7592db9Sarah Sharp /* Allow 3 retries for everything but isoc; 13487b1fc2ea8a5fbf9487d83865456cff77d0249ea9Andiry Xu * CErr shall be set to 0 for Isoch endpoints. 134947692d179f7a88794bcd302e53ca7899d7592db9Sarah Sharp */ 1350f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (!usb_endpoint_xfer_isoc(&ep->desc)) 135128ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans ep_ctx->ep_info2 = cpu_to_le32(ERROR_COUNT(3)); 1352f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp else 13537b1fc2ea8a5fbf9487d83865456cff77d0249ea9Andiry Xu ep_ctx->ep_info2 = cpu_to_le32(ERROR_COUNT(0)); 1354f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 135528ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans ep_ctx->ep_info2 |= cpu_to_le32(xhci_get_endpoint_type(udev, ep)); 1356f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 1357f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp /* Set the max packet size and max burst */ 1358f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp switch (udev->speed) { 1359f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp case USB_SPEED_SUPER: 136029cc88979a8818cd8c5019426e945aed118b400eKuninori Morimoto max_packet = usb_endpoint_maxp(&ep->desc); 136128ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans ep_ctx->ep_info2 |= cpu_to_le32(MAX_PACKET(max_packet)); 1362b10de142119a676552df3f0d2e3a9d647036c26aSarah Sharp /* dig out max burst from ep companion desc */ 1363842f16905dfc6743c1dd80c3d29b49ba3ab7f7c8Alan Stern max_packet = ep->ss_ep_comp.bMaxBurst; 136428ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans ep_ctx->ep_info2 |= cpu_to_le32(MAX_BURST(max_packet)); 1365f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp break; 1366f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp case USB_SPEED_HIGH: 1367f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp /* bits 11:12 specify the number of additional transaction 1368f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp * opportunities per microframe (USB 2.0, section 9.6.6) 1369f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp */ 1370f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (usb_endpoint_xfer_isoc(&ep->desc) || 1371f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp usb_endpoint_xfer_int(&ep->desc)) { 137229cc88979a8818cd8c5019426e945aed118b400eKuninori Morimoto max_burst = (usb_endpoint_maxp(&ep->desc) 137328ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans & 0x1800) >> 11; 137428ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans ep_ctx->ep_info2 |= cpu_to_le32(MAX_BURST(max_burst)); 1375f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp } 1376f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp /* Fall through */ 1377f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp case USB_SPEED_FULL: 1378f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp case USB_SPEED_LOW: 137929cc88979a8818cd8c5019426e945aed118b400eKuninori Morimoto max_packet = GET_MAX_PACKET(usb_endpoint_maxp(&ep->desc)); 138028ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans ep_ctx->ep_info2 |= cpu_to_le32(MAX_PACKET(max_packet)); 1381f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp break; 1382f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp default: 1383f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp BUG(); 1384f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp } 13859238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp max_esit_payload = xhci_get_max_esit_payload(xhci, udev, ep); 138628ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans ep_ctx->tx_info = cpu_to_le32(MAX_ESIT_PAYLOAD_FOR_EP(max_esit_payload)); 13879238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp 13889238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp /* 13899238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp * XXX no idea how to calculate the average TRB buffer length for bulk 13909238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp * endpoints, as the driver gives us no clue how big each scatter gather 13919238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp * list entry (or buffer) is going to be. 13929238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp * 13939238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp * For isochronous and interrupt endpoints, we set it to the max 13949238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp * available, until we have new API in the USB core to allow drivers to 13959238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp * declare how much bandwidth they actually need. 13969238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp * 13979238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp * Normally, it would be calculated by taking the total of the buffer 13989238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp * lengths in the TD and then dividing by the number of TRBs in a TD, 13999238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp * including link TRBs, No-op TRBs, and Event data TRBs. Since we don't 14009238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp * use Event Data TRBs, and we don't chain in a link TRB on short 14019238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp * transfers, we're basically dividing by 1. 140251eb01a746089f2c3d9b87f870353772d2fb4c37Andiry Xu * 140351eb01a746089f2c3d9b87f870353772d2fb4c37Andiry Xu * xHCI 1.0 specification indicates that the Average TRB Length should 140451eb01a746089f2c3d9b87f870353772d2fb4c37Andiry Xu * be set to 8 for control endpoints. 14059238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp */ 140651eb01a746089f2c3d9b87f870353772d2fb4c37Andiry Xu if (usb_endpoint_xfer_control(&ep->desc) && xhci->hci_version == 0x100) 140751eb01a746089f2c3d9b87f870353772d2fb4c37Andiry Xu ep_ctx->tx_info |= cpu_to_le32(AVG_TRB_LENGTH_FOR_EP(8)); 140851eb01a746089f2c3d9b87f870353772d2fb4c37Andiry Xu else 140951eb01a746089f2c3d9b87f870353772d2fb4c37Andiry Xu ep_ctx->tx_info |= 141051eb01a746089f2c3d9b87f870353772d2fb4c37Andiry Xu cpu_to_le32(AVG_TRB_LENGTH_FOR_EP(max_esit_payload)); 14119238f25d5d32a435277eb234ec82bacdd5daed41Sarah Sharp 1412f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp /* FIXME Debug endpoint context */ 1413f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp return 0; 1414f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp} 1415f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 1416f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharpvoid xhci_endpoint_zero(struct xhci_hcd *xhci, 1417f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp struct xhci_virt_device *virt_dev, 1418f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp struct usb_host_endpoint *ep) 1419f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp{ 1420f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp unsigned int ep_index; 1421f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp struct xhci_ep_ctx *ep_ctx; 1422f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 1423f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp ep_index = xhci_get_endpoint_index(&ep->desc); 1424d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn ep_ctx = xhci_get_ep_ctx(xhci, virt_dev->in_ctx, ep_index); 1425f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 1426f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp ep_ctx->ep_info = 0; 1427f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp ep_ctx->ep_info2 = 0; 14288e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp ep_ctx->deq = 0; 1429f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp ep_ctx->tx_info = 0; 1430f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp /* Don't free the endpoint ring until the set interface or configuration 1431f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp * request succeeds. 1432f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp */ 1433f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp} 1434f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 14359af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharpvoid xhci_clear_endpoint_bw_info(struct xhci_bw_info *bw_info) 14369af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp{ 14379af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp bw_info->ep_interval = 0; 14389af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp bw_info->mult = 0; 14399af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp bw_info->num_packets = 0; 14409af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp bw_info->max_packet_size = 0; 14419af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp bw_info->type = 0; 14429af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp bw_info->max_esit_payload = 0; 14439af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp} 14449af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp 14459af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharpvoid xhci_update_bw_info(struct xhci_hcd *xhci, 14469af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp struct xhci_container_ctx *in_ctx, 14479af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp struct xhci_input_control_ctx *ctrl_ctx, 14489af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp struct xhci_virt_device *virt_dev) 14499af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp{ 14509af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp struct xhci_bw_info *bw_info; 14519af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp struct xhci_ep_ctx *ep_ctx; 14529af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp unsigned int ep_type; 14539af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp int i; 14549af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp 14559af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp for (i = 1; i < 31; ++i) { 14569af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp bw_info = &virt_dev->eps[i].bw_info; 14579af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp 14589af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp /* We can't tell what endpoint type is being dropped, but 14599af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp * unconditionally clearing the bandwidth info for non-periodic 14609af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp * endpoints should be harmless because the info will never be 14619af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp * set in the first place. 14629af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp */ 14639af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp if (!EP_IS_ADDED(ctrl_ctx, i) && EP_IS_DROPPED(ctrl_ctx, i)) { 14649af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp /* Dropped endpoint */ 14659af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp xhci_clear_endpoint_bw_info(bw_info); 14669af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp continue; 14679af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp } 14689af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp 14699af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp if (EP_IS_ADDED(ctrl_ctx, i)) { 14709af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp ep_ctx = xhci_get_ep_ctx(xhci, in_ctx, i); 14719af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp ep_type = CTX_TO_EP_TYPE(le32_to_cpu(ep_ctx->ep_info2)); 14729af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp 14739af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp /* Ignore non-periodic endpoints */ 14749af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp if (ep_type != ISOC_OUT_EP && ep_type != INT_OUT_EP && 14759af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp ep_type != ISOC_IN_EP && 14769af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp ep_type != INT_IN_EP) 14779af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp continue; 14789af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp 14799af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp /* Added or changed endpoint */ 14809af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp bw_info->ep_interval = CTX_TO_EP_INTERVAL( 14819af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp le32_to_cpu(ep_ctx->ep_info)); 1482170c026347c867a71e27713b98c58b266146c468Sarah Sharp /* Number of packets and mult are zero-based in the 1483170c026347c867a71e27713b98c58b266146c468Sarah Sharp * input context, but we want one-based for the 1484170c026347c867a71e27713b98c58b266146c468Sarah Sharp * interval table. 14859af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp */ 1486170c026347c867a71e27713b98c58b266146c468Sarah Sharp bw_info->mult = CTX_TO_EP_MULT( 1487170c026347c867a71e27713b98c58b266146c468Sarah Sharp le32_to_cpu(ep_ctx->ep_info)) + 1; 14889af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp bw_info->num_packets = CTX_TO_MAX_BURST( 14899af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp le32_to_cpu(ep_ctx->ep_info2)) + 1; 14909af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp bw_info->max_packet_size = MAX_PACKET_DECODED( 14919af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp le32_to_cpu(ep_ctx->ep_info2)); 14929af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp bw_info->type = ep_type; 14939af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp bw_info->max_esit_payload = CTX_TO_MAX_ESIT_PAYLOAD( 14949af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp le32_to_cpu(ep_ctx->tx_info)); 14959af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp } 14969af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp } 14979af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp} 14989af5d71d8e1fc404ad2ac1b568dafa1a2f9b3be2Sarah Sharp 1499f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp/* Copy output xhci_ep_ctx to the input xhci_ep_ctx copy. 1500f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp * Useful when you want to change one particular aspect of the endpoint and then 1501f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp * issue a configure endpoint command. 1502f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp */ 1503f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharpvoid xhci_endpoint_copy(struct xhci_hcd *xhci, 1504913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp struct xhci_container_ctx *in_ctx, 1505913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp struct xhci_container_ctx *out_ctx, 1506913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp unsigned int ep_index) 1507f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp{ 1508f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp struct xhci_ep_ctx *out_ep_ctx; 1509f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp struct xhci_ep_ctx *in_ep_ctx; 1510f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp 1511913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp out_ep_ctx = xhci_get_ep_ctx(xhci, out_ctx, ep_index); 1512913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp in_ep_ctx = xhci_get_ep_ctx(xhci, in_ctx, ep_index); 1513f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp 1514f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp in_ep_ctx->ep_info = out_ep_ctx->ep_info; 1515f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp in_ep_ctx->ep_info2 = out_ep_ctx->ep_info2; 1516f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp in_ep_ctx->deq = out_ep_ctx->deq; 1517f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp in_ep_ctx->tx_info = out_ep_ctx->tx_info; 1518f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp} 1519f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp 1520f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp/* Copy output xhci_slot_ctx to the input xhci_slot_ctx. 1521f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp * Useful when you want to change one particular aspect of the endpoint and then 1522f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp * issue a configure endpoint command. Only the context entries field matters, 1523f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp * but we'll copy the whole thing anyway. 1524f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp */ 1525913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharpvoid xhci_slot_copy(struct xhci_hcd *xhci, 1526913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp struct xhci_container_ctx *in_ctx, 1527913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp struct xhci_container_ctx *out_ctx) 1528f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp{ 1529f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp struct xhci_slot_ctx *in_slot_ctx; 1530f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp struct xhci_slot_ctx *out_slot_ctx; 1531f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp 1532913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp in_slot_ctx = xhci_get_slot_ctx(xhci, in_ctx); 1533913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp out_slot_ctx = xhci_get_slot_ctx(xhci, out_ctx); 1534f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp 1535f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp in_slot_ctx->dev_info = out_slot_ctx->dev_info; 1536f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp in_slot_ctx->dev_info2 = out_slot_ctx->dev_info2; 1537f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp in_slot_ctx->tt_info = out_slot_ctx->tt_info; 1538f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp in_slot_ctx->dev_state = out_slot_ctx->dev_state; 1539f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp} 1540f2217e8edd95b0428d8123d426e0097a5e955f9fSarah Sharp 1541254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn/* Set up the scratchpad buffer array and scratchpad buffers, if needed. */ 1542254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Younstatic int scratchpad_alloc(struct xhci_hcd *xhci, gfp_t flags) 1543254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn{ 1544254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn int i; 1545254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn struct device *dev = xhci_to_hcd(xhci)->self.controller; 1546254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn int num_sp = HCS_MAX_SCRATCHPAD(xhci->hcs_params2); 1547254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1548254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci_dbg(xhci, "Allocating %d scratchpad buffers\n", num_sp); 1549254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1550254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn if (!num_sp) 1551254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn return 0; 1552254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1553254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad = kzalloc(sizeof(*xhci->scratchpad), flags); 1554254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn if (!xhci->scratchpad) 1555254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn goto fail_sp; 1556254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 155722d45f01a836c2f5826b8b4b9e029e5f79afec57Sebastian Andrzej Siewior xhci->scratchpad->sp_array = dma_alloc_coherent(dev, 1558254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn num_sp * sizeof(u64), 155922d45f01a836c2f5826b8b4b9e029e5f79afec57Sebastian Andrzej Siewior &xhci->scratchpad->sp_dma, flags); 1560254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn if (!xhci->scratchpad->sp_array) 1561254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn goto fail_sp2; 1562254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1563254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_buffers = kzalloc(sizeof(void *) * num_sp, flags); 1564254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn if (!xhci->scratchpad->sp_buffers) 1565254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn goto fail_sp3; 1566254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1567254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_dma_buffers = 1568254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn kzalloc(sizeof(dma_addr_t) * num_sp, flags); 1569254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1570254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn if (!xhci->scratchpad->sp_dma_buffers) 1571254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn goto fail_sp4; 1572254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 157328ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans xhci->dcbaa->dev_context_ptrs[0] = cpu_to_le64(xhci->scratchpad->sp_dma); 1574254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn for (i = 0; i < num_sp; i++) { 1575254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn dma_addr_t dma; 157622d45f01a836c2f5826b8b4b9e029e5f79afec57Sebastian Andrzej Siewior void *buf = dma_alloc_coherent(dev, xhci->page_size, &dma, 157722d45f01a836c2f5826b8b4b9e029e5f79afec57Sebastian Andrzej Siewior flags); 1578254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn if (!buf) 1579254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn goto fail_sp5; 1580254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1581254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_array[i] = dma; 1582254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_buffers[i] = buf; 1583254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_dma_buffers[i] = dma; 1584254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn } 1585254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1586254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn return 0; 1587254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1588254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn fail_sp5: 1589254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn for (i = i - 1; i >= 0; i--) { 159022d45f01a836c2f5826b8b4b9e029e5f79afec57Sebastian Andrzej Siewior dma_free_coherent(dev, xhci->page_size, 1591254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_buffers[i], 1592254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_dma_buffers[i]); 1593254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn } 1594254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn kfree(xhci->scratchpad->sp_dma_buffers); 1595254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1596254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn fail_sp4: 1597254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn kfree(xhci->scratchpad->sp_buffers); 1598254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1599254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn fail_sp3: 160022d45f01a836c2f5826b8b4b9e029e5f79afec57Sebastian Andrzej Siewior dma_free_coherent(dev, num_sp * sizeof(u64), 1601254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_array, 1602254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_dma); 1603254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1604254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn fail_sp2: 1605254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn kfree(xhci->scratchpad); 1606254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad = NULL; 1607254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1608254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn fail_sp: 1609254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn return -ENOMEM; 1610254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn} 1611254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1612254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Younstatic void scratchpad_free(struct xhci_hcd *xhci) 1613254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn{ 1614254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn int num_sp; 1615254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn int i; 1616254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn struct pci_dev *pdev = to_pci_dev(xhci_to_hcd(xhci)->self.controller); 1617254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1618254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn if (!xhci->scratchpad) 1619254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn return; 1620254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1621254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn num_sp = HCS_MAX_SCRATCHPAD(xhci->hcs_params2); 1622254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1623254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn for (i = 0; i < num_sp; i++) { 162422d45f01a836c2f5826b8b4b9e029e5f79afec57Sebastian Andrzej Siewior dma_free_coherent(&pdev->dev, xhci->page_size, 1625254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_buffers[i], 1626254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_dma_buffers[i]); 1627254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn } 1628254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn kfree(xhci->scratchpad->sp_dma_buffers); 1629254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn kfree(xhci->scratchpad->sp_buffers); 163022d45f01a836c2f5826b8b4b9e029e5f79afec57Sebastian Andrzej Siewior dma_free_coherent(&pdev->dev, num_sp * sizeof(u64), 1631254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_array, 1632254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_dma); 1633254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn kfree(xhci->scratchpad); 1634254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad = NULL; 1635254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn} 1636254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 1637913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharpstruct xhci_command *xhci_alloc_command(struct xhci_hcd *xhci, 1638a1d78c16bd31a715785e21967ac6110b386a3c1fSarah Sharp bool allocate_in_ctx, bool allocate_completion, 1639a1d78c16bd31a715785e21967ac6110b386a3c1fSarah Sharp gfp_t mem_flags) 1640913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp{ 1641913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp struct xhci_command *command; 1642913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp 1643913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp command = kzalloc(sizeof(*command), mem_flags); 1644913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp if (!command) 1645913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp return NULL; 1646913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp 1647a1d78c16bd31a715785e21967ac6110b386a3c1fSarah Sharp if (allocate_in_ctx) { 1648a1d78c16bd31a715785e21967ac6110b386a3c1fSarah Sharp command->in_ctx = 1649a1d78c16bd31a715785e21967ac6110b386a3c1fSarah Sharp xhci_alloc_container_ctx(xhci, XHCI_CTX_TYPE_INPUT, 1650a1d78c16bd31a715785e21967ac6110b386a3c1fSarah Sharp mem_flags); 1651a1d78c16bd31a715785e21967ac6110b386a3c1fSarah Sharp if (!command->in_ctx) { 1652a1d78c16bd31a715785e21967ac6110b386a3c1fSarah Sharp kfree(command); 1653a1d78c16bd31a715785e21967ac6110b386a3c1fSarah Sharp return NULL; 1654a1d78c16bd31a715785e21967ac6110b386a3c1fSarah Sharp } 165506e182911da95a304eaab71288a47bc5c799c4ebJulia Lawall } 1656913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp 1657913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp if (allocate_completion) { 1658913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp command->completion = 1659913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp kzalloc(sizeof(struct completion), mem_flags); 1660913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp if (!command->completion) { 1661913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp xhci_free_container_ctx(xhci, command->in_ctx); 166206e182911da95a304eaab71288a47bc5c799c4ebJulia Lawall kfree(command); 1663913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp return NULL; 1664913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp } 1665913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp init_completion(command->completion); 1666913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp } 1667913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp 1668913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp command->status = 0; 1669913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp INIT_LIST_HEAD(&command->cmd_list); 1670913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp return command; 1671913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp} 1672913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp 16738e51adccd4c4b9ffcd509d7f2afce0a906139f75Andiry Xuvoid xhci_urb_free_priv(struct xhci_hcd *xhci, struct urb_priv *urb_priv) 16748e51adccd4c4b9ffcd509d7f2afce0a906139f75Andiry Xu{ 16752ffdea25f054439c31c24b248faa647685280571Andiry Xu if (urb_priv) { 16762ffdea25f054439c31c24b248faa647685280571Andiry Xu kfree(urb_priv->td[0]); 16772ffdea25f054439c31c24b248faa647685280571Andiry Xu kfree(urb_priv); 16788e51adccd4c4b9ffcd509d7f2afce0a906139f75Andiry Xu } 16798e51adccd4c4b9ffcd509d7f2afce0a906139f75Andiry Xu} 16808e51adccd4c4b9ffcd509d7f2afce0a906139f75Andiry Xu 1681913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharpvoid xhci_free_command(struct xhci_hcd *xhci, 1682913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp struct xhci_command *command) 1683913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp{ 1684913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp xhci_free_container_ctx(xhci, 1685913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp command->in_ctx); 1686913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp kfree(command->completion); 1687913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp kfree(command); 1688913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp} 1689913a8a344ffcaf0b4a586d6662a2c66a7106557dSarah Sharp 169066d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharpvoid xhci_mem_cleanup(struct xhci_hcd *xhci) 169166d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp{ 16920ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct pci_dev *pdev = to_pci_dev(xhci_to_hcd(xhci)->self.controller); 16939574323c39d1f8359a04843075d89c9f32d8b7e6Andiry Xu struct dev_info *dev_info, *next; 16949574323c39d1f8359a04843075d89c9f32d8b7e6Andiry Xu unsigned long flags; 16950ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp int size; 16963ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp int i; 16970ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 16980ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* Free the Event Ring Segment Table and the actual Event Ring */ 1699d94c05e33d9212ee67b8d4998f984cc71df8168bSarah Sharp if (xhci->ir_set) { 1700d94c05e33d9212ee67b8d4998f984cc71df8168bSarah Sharp xhci_writel(xhci, 0, &xhci->ir_set->erst_size); 1701d94c05e33d9212ee67b8d4998f984cc71df8168bSarah Sharp xhci_write_64(xhci, 0, &xhci->ir_set->erst_base); 1702d94c05e33d9212ee67b8d4998f984cc71df8168bSarah Sharp xhci_write_64(xhci, 0, &xhci->ir_set->erst_dequeue); 1703d94c05e33d9212ee67b8d4998f984cc71df8168bSarah Sharp } 17040ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp size = sizeof(struct xhci_erst_entry)*(xhci->erst.num_entries); 17050ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (xhci->erst.entries) 170622d45f01a836c2f5826b8b4b9e029e5f79afec57Sebastian Andrzej Siewior dma_free_coherent(&pdev->dev, size, 17070ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->erst.entries, xhci->erst.erst_dma_addr); 17080ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->erst.entries = NULL; 17090ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg(xhci, "Freed ERST\n"); 17100ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (xhci->event_ring) 17110ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_ring_free(xhci, xhci->event_ring); 17120ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->event_ring = NULL; 17130ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg(xhci, "Freed event ring\n"); 17140ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 17158e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp xhci_write_64(xhci, 0, &xhci->op_regs->cmd_ring); 17160ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (xhci->cmd_ring) 17170ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_ring_free(xhci, xhci->cmd_ring); 17180ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->cmd_ring = NULL; 17190ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg(xhci, "Freed command ring\n"); 17203ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 17213ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp for (i = 1; i < MAX_HC_SLOTS; ++i) 17223ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci_free_virt_device(xhci, i); 17233ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 17240ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (xhci->segment_pool) 17250ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp dma_pool_destroy(xhci->segment_pool); 17260ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->segment_pool = NULL; 17270ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg(xhci, "Freed segment pool\n"); 17283ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 17293ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (xhci->device_pool) 17303ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dma_pool_destroy(xhci->device_pool); 17313ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci->device_pool = NULL; 17323ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci_dbg(xhci, "Freed device context pool\n"); 17333ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 17348df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (xhci->small_streams_pool) 17358df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp dma_pool_destroy(xhci->small_streams_pool); 17368df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci->small_streams_pool = NULL; 17378df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_dbg(xhci, "Freed small stream array pool\n"); 17388df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 17398df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (xhci->medium_streams_pool) 17408df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp dma_pool_destroy(xhci->medium_streams_pool); 17418df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci->medium_streams_pool = NULL; 17428df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci_dbg(xhci, "Freed medium stream array pool\n"); 17438df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 17448e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp xhci_write_64(xhci, 0, &xhci->op_regs->dcbaa_ptr); 1745a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp if (xhci->dcbaa) 174622d45f01a836c2f5826b8b4b9e029e5f79afec57Sebastian Andrzej Siewior dma_free_coherent(&pdev->dev, sizeof(*xhci->dcbaa), 1747a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp xhci->dcbaa, xhci->dcbaa->dma); 1748a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp xhci->dcbaa = NULL; 17493ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 17505294bea40666db5c5d6c336b8e4e55d69fa576caSarah Sharp scratchpad_free(xhci); 1751da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp 17529574323c39d1f8359a04843075d89c9f32d8b7e6Andiry Xu spin_lock_irqsave(&xhci->lock, flags); 17539574323c39d1f8359a04843075d89c9f32d8b7e6Andiry Xu list_for_each_entry_safe(dev_info, next, &xhci->lpm_failed_devs, list) { 17549574323c39d1f8359a04843075d89c9f32d8b7e6Andiry Xu list_del(&dev_info->list); 17559574323c39d1f8359a04843075d89c9f32d8b7e6Andiry Xu kfree(dev_info); 17569574323c39d1f8359a04843075d89c9f32d8b7e6Andiry Xu } 17579574323c39d1f8359a04843075d89c9f32d8b7e6Andiry Xu spin_unlock_irqrestore(&xhci->lock, flags); 17589574323c39d1f8359a04843075d89c9f32d8b7e6Andiry Xu 1759da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci->num_usb2_ports = 0; 1760da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci->num_usb3_ports = 0; 1761da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp kfree(xhci->usb2_ports); 1762da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp kfree(xhci->usb3_ports); 1763da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp kfree(xhci->port_array); 1764839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp kfree(xhci->rh_bw); 1765da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp 176666d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci->page_size = 0; 176766d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci->page_shift = 0; 176820b67cf51fa606442bb343afad0ee1a393a6afb3Sarah Sharp xhci->bus_state[0].bus_suspended = 0; 1769f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp xhci->bus_state[1].bus_suspended = 0; 177066d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp} 177166d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp 17726648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharpstatic int xhci_test_trb_in_td(struct xhci_hcd *xhci, 17736648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp struct xhci_segment *input_seg, 17746648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp union xhci_trb *start_trb, 17756648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp union xhci_trb *end_trb, 17766648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp dma_addr_t input_dma, 17776648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp struct xhci_segment *result_seg, 17786648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp char *test_name, int test_number) 17796648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp{ 17806648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp unsigned long long start_dma; 17816648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp unsigned long long end_dma; 17826648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp struct xhci_segment *seg; 17836648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp 17846648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp start_dma = xhci_trb_virt_to_dma(input_seg, start_trb); 17856648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp end_dma = xhci_trb_virt_to_dma(input_seg, end_trb); 17866648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp 17876648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp seg = trb_in_td(input_seg, start_trb, end_trb, input_dma); 17886648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp if (seg != result_seg) { 17896648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp xhci_warn(xhci, "WARN: %s TRB math test %d failed!\n", 17906648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp test_name, test_number); 17916648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp xhci_warn(xhci, "Tested TRB math w/ seg %p and " 17926648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp "input DMA 0x%llx\n", 17936648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp input_seg, 17946648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp (unsigned long long) input_dma); 17956648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp xhci_warn(xhci, "starting TRB %p (0x%llx DMA), " 17966648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp "ending TRB %p (0x%llx DMA)\n", 17976648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp start_trb, start_dma, 17986648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp end_trb, end_dma); 17996648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp xhci_warn(xhci, "Expected seg %p, got seg %p\n", 18006648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp result_seg, seg); 18016648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp return -1; 18026648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp } 18036648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp return 0; 18046648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp} 18056648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp 18066648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp/* TRB math checks for xhci_trb_in_td(), using the command and event rings. */ 18076648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharpstatic int xhci_check_trb_in_td_math(struct xhci_hcd *xhci, gfp_t mem_flags) 18086648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp{ 18096648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp struct { 18106648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp dma_addr_t input_dma; 18116648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp struct xhci_segment *result_seg; 18126648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp } simple_test_vector [] = { 18136648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp /* A zeroed DMA field should fail */ 18146648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp { 0, NULL }, 18156648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp /* One TRB before the ring start should fail */ 18166648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp { xhci->event_ring->first_seg->dma - 16, NULL }, 18176648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp /* One byte before the ring start should fail */ 18186648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp { xhci->event_ring->first_seg->dma - 1, NULL }, 18196648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp /* Starting TRB should succeed */ 18206648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp { xhci->event_ring->first_seg->dma, xhci->event_ring->first_seg }, 18216648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp /* Ending TRB should succeed */ 18226648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp { xhci->event_ring->first_seg->dma + (TRBS_PER_SEGMENT - 1)*16, 18236648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp xhci->event_ring->first_seg }, 18246648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp /* One byte after the ring end should fail */ 18256648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp { xhci->event_ring->first_seg->dma + (TRBS_PER_SEGMENT - 1)*16 + 1, NULL }, 18266648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp /* One TRB after the ring end should fail */ 18276648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp { xhci->event_ring->first_seg->dma + (TRBS_PER_SEGMENT)*16, NULL }, 18286648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp /* An address of all ones should fail */ 18296648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp { (dma_addr_t) (~0), NULL }, 18306648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp }; 18316648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp struct { 18326648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp struct xhci_segment *input_seg; 18336648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp union xhci_trb *start_trb; 18346648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp union xhci_trb *end_trb; 18356648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp dma_addr_t input_dma; 18366648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp struct xhci_segment *result_seg; 18376648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp } complex_test_vector [] = { 18386648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp /* Test feeding a valid DMA address from a different ring */ 18396648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp { .input_seg = xhci->event_ring->first_seg, 18406648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .start_trb = xhci->event_ring->first_seg->trbs, 18416648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .end_trb = &xhci->event_ring->first_seg->trbs[TRBS_PER_SEGMENT - 1], 18426648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .input_dma = xhci->cmd_ring->first_seg->dma, 18436648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .result_seg = NULL, 18446648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp }, 18456648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp /* Test feeding a valid end TRB from a different ring */ 18466648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp { .input_seg = xhci->event_ring->first_seg, 18476648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .start_trb = xhci->event_ring->first_seg->trbs, 18486648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .end_trb = &xhci->cmd_ring->first_seg->trbs[TRBS_PER_SEGMENT - 1], 18496648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .input_dma = xhci->cmd_ring->first_seg->dma, 18506648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .result_seg = NULL, 18516648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp }, 18526648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp /* Test feeding a valid start and end TRB from a different ring */ 18536648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp { .input_seg = xhci->event_ring->first_seg, 18546648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .start_trb = xhci->cmd_ring->first_seg->trbs, 18556648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .end_trb = &xhci->cmd_ring->first_seg->trbs[TRBS_PER_SEGMENT - 1], 18566648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .input_dma = xhci->cmd_ring->first_seg->dma, 18576648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .result_seg = NULL, 18586648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp }, 18596648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp /* TRB in this ring, but after this TD */ 18606648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp { .input_seg = xhci->event_ring->first_seg, 18616648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .start_trb = &xhci->event_ring->first_seg->trbs[0], 18626648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .end_trb = &xhci->event_ring->first_seg->trbs[3], 18636648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .input_dma = xhci->event_ring->first_seg->dma + 4*16, 18646648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .result_seg = NULL, 18656648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp }, 18666648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp /* TRB in this ring, but before this TD */ 18676648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp { .input_seg = xhci->event_ring->first_seg, 18686648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .start_trb = &xhci->event_ring->first_seg->trbs[3], 18696648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .end_trb = &xhci->event_ring->first_seg->trbs[6], 18706648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .input_dma = xhci->event_ring->first_seg->dma + 2*16, 18716648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .result_seg = NULL, 18726648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp }, 18736648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp /* TRB in this ring, but after this wrapped TD */ 18746648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp { .input_seg = xhci->event_ring->first_seg, 18756648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .start_trb = &xhci->event_ring->first_seg->trbs[TRBS_PER_SEGMENT - 3], 18766648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .end_trb = &xhci->event_ring->first_seg->trbs[1], 18776648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .input_dma = xhci->event_ring->first_seg->dma + 2*16, 18786648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .result_seg = NULL, 18796648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp }, 18806648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp /* TRB in this ring, but before this wrapped TD */ 18816648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp { .input_seg = xhci->event_ring->first_seg, 18826648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .start_trb = &xhci->event_ring->first_seg->trbs[TRBS_PER_SEGMENT - 3], 18836648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .end_trb = &xhci->event_ring->first_seg->trbs[1], 18846648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .input_dma = xhci->event_ring->first_seg->dma + (TRBS_PER_SEGMENT - 4)*16, 18856648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .result_seg = NULL, 18866648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp }, 18876648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp /* TRB not in this ring, and we have a wrapped TD */ 18886648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp { .input_seg = xhci->event_ring->first_seg, 18896648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .start_trb = &xhci->event_ring->first_seg->trbs[TRBS_PER_SEGMENT - 3], 18906648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .end_trb = &xhci->event_ring->first_seg->trbs[1], 18916648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .input_dma = xhci->cmd_ring->first_seg->dma + 2*16, 18926648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp .result_seg = NULL, 18936648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp }, 18946648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp }; 18956648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp 18966648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp unsigned int num_tests; 18976648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp int i, ret; 18986648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp 1899e10fa4787f1fb9c8738dff955c272f30b7b63134Kulikov Vasiliy num_tests = ARRAY_SIZE(simple_test_vector); 19006648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp for (i = 0; i < num_tests; i++) { 19016648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp ret = xhci_test_trb_in_td(xhci, 19026648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp xhci->event_ring->first_seg, 19036648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp xhci->event_ring->first_seg->trbs, 19046648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp &xhci->event_ring->first_seg->trbs[TRBS_PER_SEGMENT - 1], 19056648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp simple_test_vector[i].input_dma, 19066648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp simple_test_vector[i].result_seg, 19076648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp "Simple", i); 19086648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp if (ret < 0) 19096648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp return ret; 19106648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp } 19116648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp 1912e10fa4787f1fb9c8738dff955c272f30b7b63134Kulikov Vasiliy num_tests = ARRAY_SIZE(complex_test_vector); 19136648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp for (i = 0; i < num_tests; i++) { 19146648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp ret = xhci_test_trb_in_td(xhci, 19156648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp complex_test_vector[i].input_seg, 19166648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp complex_test_vector[i].start_trb, 19176648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp complex_test_vector[i].end_trb, 19186648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp complex_test_vector[i].input_dma, 19196648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp complex_test_vector[i].result_seg, 19206648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp "Complex", i); 19216648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp if (ret < 0) 19226648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp return ret; 19236648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp } 19246648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp xhci_dbg(xhci, "TRB math tests passed.\n"); 19256648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp return 0; 19266648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp} 19276648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp 1928257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharpstatic void xhci_set_hc_event_deq(struct xhci_hcd *xhci) 1929257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp{ 1930257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp u64 temp; 1931257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp dma_addr_t deq; 1932257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp 1933257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp deq = xhci_trb_virt_to_dma(xhci->event_ring->deq_seg, 1934257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp xhci->event_ring->dequeue); 1935257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp if (deq == 0 && !in_interrupt()) 1936257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp xhci_warn(xhci, "WARN something wrong with SW event ring " 1937257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp "dequeue ptr.\n"); 1938257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp /* Update HC event ring dequeue pointer */ 1939257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp temp = xhci_read_64(xhci, &xhci->ir_set->erst_dequeue); 1940257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp temp &= ERST_PTR_MASK; 1941257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp /* Don't clear the EHB bit (which is RW1C) because 1942257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp * there might be more events to service. 1943257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp */ 1944257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp temp &= ~ERST_EHB; 1945257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp xhci_dbg(xhci, "// Write event ring dequeue pointer, " 1946257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp "preserving EHB bit\n"); 1947257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp xhci_write_64(xhci, ((u64) deq & (u64) ~ERST_PTR_MASK) | temp, 1948257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp &xhci->ir_set->erst_dequeue); 1949257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp} 1950257d585aaec469ded6ec15d8a8e7ebada21d7277Sarah Sharp 1951da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharpstatic void xhci_add_in_port(struct xhci_hcd *xhci, unsigned int num_ports, 195228ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans __le32 __iomem *addr, u8 major_revision) 1953da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp{ 1954da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp u32 temp, port_offset, port_count; 1955da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp int i; 1956da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp 1957da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (major_revision > 0x03) { 1958da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci_warn(xhci, "Ignoring unknown port speed, " 1959da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp "Ext Cap %p, revision = 0x%x\n", 1960da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp addr, major_revision); 1961da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp /* Ignoring port protocol we can't understand. FIXME */ 1962da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp return; 1963da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp } 1964da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp 1965da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp /* Port offset and count in the third dword, see section 7.2 */ 1966da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp temp = xhci_readl(xhci, addr + 2); 1967da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp port_offset = XHCI_EXT_PORT_OFF(temp); 1968da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp port_count = XHCI_EXT_PORT_COUNT(temp); 1969da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci_dbg(xhci, "Ext Cap %p, port offset = %u, " 1970da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp "count = %u, revision = 0x%x\n", 1971da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp addr, port_offset, port_count, major_revision); 1972da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp /* Port count includes the current port offset */ 1973da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (port_offset == 0 || (port_offset + port_count - 1) > num_ports) 1974da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp /* WTF? "Valid values are ‘1’ to MaxPorts" */ 1975da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp return; 1976fc71ff7583b14347fa1cb592b698f088ecff36e3Andiry Xu 1977fc71ff7583b14347fa1cb592b698f088ecff36e3Andiry Xu /* Check the host's USB2 LPM capability */ 1978fc71ff7583b14347fa1cb592b698f088ecff36e3Andiry Xu if ((xhci->hci_version == 0x96) && (major_revision != 0x03) && 1979fc71ff7583b14347fa1cb592b698f088ecff36e3Andiry Xu (temp & XHCI_L1C)) { 1980fc71ff7583b14347fa1cb592b698f088ecff36e3Andiry Xu xhci_dbg(xhci, "xHCI 0.96: support USB2 software lpm\n"); 1981fc71ff7583b14347fa1cb592b698f088ecff36e3Andiry Xu xhci->sw_lpm_support = 1; 1982fc71ff7583b14347fa1cb592b698f088ecff36e3Andiry Xu } 1983fc71ff7583b14347fa1cb592b698f088ecff36e3Andiry Xu 1984fc71ff7583b14347fa1cb592b698f088ecff36e3Andiry Xu if ((xhci->hci_version >= 0x100) && (major_revision != 0x03)) { 1985fc71ff7583b14347fa1cb592b698f088ecff36e3Andiry Xu xhci_dbg(xhci, "xHCI 1.0: support USB2 software lpm\n"); 1986fc71ff7583b14347fa1cb592b698f088ecff36e3Andiry Xu xhci->sw_lpm_support = 1; 1987fc71ff7583b14347fa1cb592b698f088ecff36e3Andiry Xu if (temp & XHCI_HLC) { 1988fc71ff7583b14347fa1cb592b698f088ecff36e3Andiry Xu xhci_dbg(xhci, "xHCI 1.0: support USB2 hardware lpm\n"); 1989fc71ff7583b14347fa1cb592b698f088ecff36e3Andiry Xu xhci->hw_lpm_support = 1; 1990fc71ff7583b14347fa1cb592b698f088ecff36e3Andiry Xu } 1991fc71ff7583b14347fa1cb592b698f088ecff36e3Andiry Xu } 1992fc71ff7583b14347fa1cb592b698f088ecff36e3Andiry Xu 1993da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp port_offset--; 1994da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp for (i = port_offset; i < (port_offset + port_count); i++) { 1995da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp /* Duplicate entry. Ignore the port if the revisions differ. */ 1996da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (xhci->port_array[i] != 0) { 1997da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci_warn(xhci, "Duplicate port entry, Ext Cap %p," 1998da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp " port %u\n", addr, i); 1999da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci_warn(xhci, "Port was marked as USB %u, " 2000da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp "duplicated as USB %u\n", 2001da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci->port_array[i], major_revision); 2002da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp /* Only adjust the roothub port counts if we haven't 2003da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp * found a similar duplicate. 2004da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp */ 2005da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (xhci->port_array[i] != major_revision && 200622e0487047567252d5677ff35766cd884375efc2Dan Carpenter xhci->port_array[i] != DUPLICATE_ENTRY) { 2007da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (xhci->port_array[i] == 0x03) 2008da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci->num_usb3_ports--; 2009da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp else 2010da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci->num_usb2_ports--; 201122e0487047567252d5677ff35766cd884375efc2Dan Carpenter xhci->port_array[i] = DUPLICATE_ENTRY; 2012da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp } 2013da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp /* FIXME: Should we disable the port? */ 2014f8bbeabc34aa945ab4275abc9a4dfde0aea798caSarah Sharp continue; 2015da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp } 2016da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci->port_array[i] = major_revision; 2017da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (major_revision == 0x03) 2018da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci->num_usb3_ports++; 2019da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp else 2020da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci->num_usb2_ports++; 2021da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp } 2022da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp /* FIXME: Should we disable ports not in the Extended Capabilities? */ 2023da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp} 2024da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp 2025da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp/* 2026da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp * Scan the Extended Capabilities for the "Supported Protocol Capabilities" that 2027da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp * specify what speeds each port is supposed to be. We can't count on the port 2028da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp * speed bits in the PORTSC register being correct until a device is connected, 2029da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp * but we need to set up the two fake roothubs with the correct number of USB 2030da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp * 3.0 and USB 2.0 ports at host controller initialization time. 2031da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp */ 2032da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharpstatic int xhci_setup_port_arrays(struct xhci_hcd *xhci, gfp_t flags) 2033da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp{ 203428ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans __le32 __iomem *addr; 2035da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp u32 offset; 2036da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp unsigned int num_ports; 20372e27980e6eb78114c4ecbaad1ba71836e3887d18Sarah Sharp int i, j, port_index; 2038da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp 2039da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp addr = &xhci->cap_regs->hcc_params; 2040da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp offset = XHCI_HCC_EXT_CAPS(xhci_readl(xhci, addr)); 2041da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (offset == 0) { 2042da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci_err(xhci, "No Extended Capability registers, " 2043da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp "unable to set up roothub.\n"); 2044da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp return -ENODEV; 2045da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp } 2046da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp 2047da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp num_ports = HCS_MAX_PORTS(xhci->hcs_params1); 2048da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci->port_array = kzalloc(sizeof(*xhci->port_array)*num_ports, flags); 2049da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (!xhci->port_array) 2050da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp return -ENOMEM; 2051da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp 2052839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp xhci->rh_bw = kzalloc(sizeof(*xhci->rh_bw)*num_ports, flags); 2053839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp if (!xhci->rh_bw) 2054839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp return -ENOMEM; 20552e27980e6eb78114c4ecbaad1ba71836e3887d18Sarah Sharp for (i = 0; i < num_ports; i++) { 20562e27980e6eb78114c4ecbaad1ba71836e3887d18Sarah Sharp struct xhci_interval_bw_table *bw_table; 20572e27980e6eb78114c4ecbaad1ba71836e3887d18Sarah Sharp 2058839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp INIT_LIST_HEAD(&xhci->rh_bw[i].tts); 20592e27980e6eb78114c4ecbaad1ba71836e3887d18Sarah Sharp bw_table = &xhci->rh_bw[i].bw_table; 20602e27980e6eb78114c4ecbaad1ba71836e3887d18Sarah Sharp for (j = 0; j < XHCI_MAX_INTERVAL; j++) 20612e27980e6eb78114c4ecbaad1ba71836e3887d18Sarah Sharp INIT_LIST_HEAD(&bw_table->interval_bw[j].endpoints); 20622e27980e6eb78114c4ecbaad1ba71836e3887d18Sarah Sharp } 2063839c817ce67178ca3c7c7ad534c571bba1e69ebeSarah Sharp 2064da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp /* 2065da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp * For whatever reason, the first capability offset is from the 2066da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp * capability register base, not from the HCCPARAMS register. 2067da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp * See section 5.3.6 for offset calculation. 2068da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp */ 2069da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp addr = &xhci->cap_regs->hc_capbase + offset; 2070da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp while (1) { 2071da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp u32 cap_id; 2072da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp 2073da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp cap_id = xhci_readl(xhci, addr); 2074da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (XHCI_EXT_CAPS_ID(cap_id) == XHCI_EXT_CAPS_PROTOCOL) 2075da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci_add_in_port(xhci, num_ports, addr, 2076da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp (u8) XHCI_EXT_PORT_MAJOR(cap_id)); 2077da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp offset = XHCI_EXT_CAPS_NEXT(cap_id); 2078da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (!offset || (xhci->num_usb2_ports + xhci->num_usb3_ports) 2079da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp == num_ports) 2080da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp break; 2081da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp /* 2082da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp * Once you're into the Extended Capabilities, the offset is 2083da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp * always relative to the register holding the offset. 2084da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp */ 2085da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp addr += offset; 2086da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp } 2087da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp 2088da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (xhci->num_usb2_ports == 0 && xhci->num_usb3_ports == 0) { 2089da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci_warn(xhci, "No ports on the roothubs?\n"); 2090da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp return -ENODEV; 2091da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp } 2092da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci_dbg(xhci, "Found %u USB 2.0 ports and %u USB 3.0 ports.\n", 2093da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci->num_usb2_ports, xhci->num_usb3_ports); 2094d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp 2095d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp /* Place limits on the number of roothub ports so that the hub 2096d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp * descriptors aren't longer than the USB core will allocate. 2097d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp */ 2098d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp if (xhci->num_usb3_ports > 15) { 2099d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp xhci_dbg(xhci, "Limiting USB 3.0 roothub ports to 15.\n"); 2100d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp xhci->num_usb3_ports = 15; 2101d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp } 2102d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp if (xhci->num_usb2_ports > USB_MAXCHILDREN) { 2103d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp xhci_dbg(xhci, "Limiting USB 2.0 roothub ports to %u.\n", 2104d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp USB_MAXCHILDREN); 2105d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp xhci->num_usb2_ports = USB_MAXCHILDREN; 2106d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp } 2107d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp 2108da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp /* 2109da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp * Note we could have all USB 3.0 ports, or all USB 2.0 ports. 2110da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp * Not sure how the USB core will handle a hub with no ports... 2111da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp */ 2112da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (xhci->num_usb2_ports) { 2113da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci->usb2_ports = kmalloc(sizeof(*xhci->usb2_ports)* 2114da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci->num_usb2_ports, flags); 2115da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (!xhci->usb2_ports) 2116da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp return -ENOMEM; 2117da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp 2118da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp port_index = 0; 2119f8bbeabc34aa945ab4275abc9a4dfde0aea798caSarah Sharp for (i = 0; i < num_ports; i++) { 2120f8bbeabc34aa945ab4275abc9a4dfde0aea798caSarah Sharp if (xhci->port_array[i] == 0x03 || 2121f8bbeabc34aa945ab4275abc9a4dfde0aea798caSarah Sharp xhci->port_array[i] == 0 || 212222e0487047567252d5677ff35766cd884375efc2Dan Carpenter xhci->port_array[i] == DUPLICATE_ENTRY) 2123f8bbeabc34aa945ab4275abc9a4dfde0aea798caSarah Sharp continue; 2124f8bbeabc34aa945ab4275abc9a4dfde0aea798caSarah Sharp 2125f8bbeabc34aa945ab4275abc9a4dfde0aea798caSarah Sharp xhci->usb2_ports[port_index] = 2126f8bbeabc34aa945ab4275abc9a4dfde0aea798caSarah Sharp &xhci->op_regs->port_status_base + 2127f8bbeabc34aa945ab4275abc9a4dfde0aea798caSarah Sharp NUM_PORT_REGS*i; 2128f8bbeabc34aa945ab4275abc9a4dfde0aea798caSarah Sharp xhci_dbg(xhci, "USB 2.0 port at index %u, " 2129f8bbeabc34aa945ab4275abc9a4dfde0aea798caSarah Sharp "addr = %p\n", i, 2130f8bbeabc34aa945ab4275abc9a4dfde0aea798caSarah Sharp xhci->usb2_ports[port_index]); 2131f8bbeabc34aa945ab4275abc9a4dfde0aea798caSarah Sharp port_index++; 2132d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp if (port_index == xhci->num_usb2_ports) 2133d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp break; 2134f8bbeabc34aa945ab4275abc9a4dfde0aea798caSarah Sharp } 2135da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp } 2136da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (xhci->num_usb3_ports) { 2137da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci->usb3_ports = kmalloc(sizeof(*xhci->usb3_ports)* 2138da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci->num_usb3_ports, flags); 2139da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (!xhci->usb3_ports) 2140da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp return -ENOMEM; 2141da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp 2142da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp port_index = 0; 2143da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp for (i = 0; i < num_ports; i++) 2144da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (xhci->port_array[i] == 0x03) { 2145da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci->usb3_ports[port_index] = 2146da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp &xhci->op_regs->port_status_base + 2147da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp NUM_PORT_REGS*i; 2148da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci_dbg(xhci, "USB 3.0 port at index %u, " 2149da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp "addr = %p\n", i, 2150da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp xhci->usb3_ports[port_index]); 2151da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp port_index++; 2152d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp if (port_index == xhci->num_usb3_ports) 2153d30b2a208108a0b0fdeae7006b8824d9be16ca96Sarah Sharp break; 2154da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp } 2155da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp } 2156da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp return 0; 2157da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp} 21586648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp 215966d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharpint xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) 216066d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp{ 21610ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp dma_addr_t dma; 21620ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct device *dev = xhci_to_hcd(xhci)->self.controller; 216366d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp unsigned int val, val2; 21648e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp u64 val_64; 21650ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct xhci_segment *seg; 2166623bef9e03a60adc623b09673297ca7a1cdfb367Sarah Sharp u32 page_size, temp; 216766d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp int i; 216866d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp 216966d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp page_size = xhci_readl(xhci, &xhci->op_regs->page_size); 217066d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci_dbg(xhci, "Supported page size register = 0x%x\n", page_size); 217166d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp for (i = 0; i < 16; i++) { 217266d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp if ((0x1 & page_size) != 0) 217366d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp break; 217466d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp page_size = page_size >> 1; 217566d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp } 217666d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp if (i < 16) 217766d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci_dbg(xhci, "Supported page size of %iK\n", (1 << (i+12)) / 1024); 217866d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp else 217966d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci_warn(xhci, "WARN: no supported page size\n"); 218066d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp /* Use 4K pages, since that's common and the minimum the HC supports */ 218166d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci->page_shift = 12; 218266d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci->page_size = 1 << xhci->page_shift; 218366d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci_dbg(xhci, "HCD page size set to %iK\n", xhci->page_size / 1024); 218466d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp 218566d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp /* 218666d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp * Program the Number of Device Slots Enabled field in the CONFIG 218766d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp * register with the max value of slots the HC can handle. 218866d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp */ 218966d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp val = HCS_MAX_SLOTS(xhci_readl(xhci, &xhci->cap_regs->hcs_params1)); 219066d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci_dbg(xhci, "// xHC can handle at most %d device slots.\n", 219166d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp (unsigned int) val); 219266d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp val2 = xhci_readl(xhci, &xhci->op_regs->config_reg); 219366d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp val |= (val2 & ~HCS_SLOTS_MASK); 219466d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci_dbg(xhci, "// Setting Max device slots reg = 0x%x.\n", 219566d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp (unsigned int) val); 219666d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci_writel(xhci, val, &xhci->op_regs->config_reg); 219766d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp 21980ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* 2199a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp * Section 5.4.8 - doorbell array must be 2200a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp * "physically contiguous and 64-byte (cache line) aligned". 2201a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp */ 220222d45f01a836c2f5826b8b4b9e029e5f79afec57Sebastian Andrzej Siewior xhci->dcbaa = dma_alloc_coherent(dev, sizeof(*xhci->dcbaa), &dma, 220322d45f01a836c2f5826b8b4b9e029e5f79afec57Sebastian Andrzej Siewior GFP_KERNEL); 2204a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp if (!xhci->dcbaa) 2205a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp goto fail; 2206a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp memset(xhci->dcbaa, 0, sizeof *(xhci->dcbaa)); 2207a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp xhci->dcbaa->dma = dma; 2208700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "// Device context base array address = 0x%llx (DMA), %p (virt)\n", 2209700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman (unsigned long long)xhci->dcbaa->dma, xhci->dcbaa); 22108e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp xhci_write_64(xhci, dma, &xhci->op_regs->dcbaa_ptr); 2211a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp 2212a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp /* 22130ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * Initialize the ring segment pool. The ring must be a contiguous 22140ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * structure comprised of TRBs. The TRBs must be 16 byte aligned, 22150ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * however, the command ring segment needs 64-byte aligned segments, 22160ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * so we pick the greater alignment need. 22170ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp */ 22180ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->segment_pool = dma_pool_create("xHCI ring segments", dev, 22190ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp SEGMENT_SIZE, 64, xhci->page_size); 2220d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn 22213ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* See Table 46 and Note on Figure 55 */ 22223ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci->device_pool = dma_pool_create("xHCI input/output contexts", dev, 2223d115b04818e57bdbc7ccde4d0660b15e33013dc8John Youn 2112, 64, xhci->page_size); 22243ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (!xhci->segment_pool || !xhci->device_pool) 22250ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp goto fail; 22260ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 22278df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp /* Linear stream context arrays don't have any boundary restrictions, 22288df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp * and only need to be 16-byte aligned. 22298df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp */ 22308df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci->small_streams_pool = 22318df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp dma_pool_create("xHCI 256 byte stream ctx arrays", 22328df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp dev, SMALL_STREAM_ARRAY_SIZE, 16, 0); 22338df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp xhci->medium_streams_pool = 22348df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp dma_pool_create("xHCI 1KB stream ctx arrays", 22358df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp dev, MEDIUM_STREAM_ARRAY_SIZE, 16, 0); 22368df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp /* Any stream context array bigger than MEDIUM_STREAM_ARRAY_SIZE 223722d45f01a836c2f5826b8b4b9e029e5f79afec57Sebastian Andrzej Siewior * will be allocated with dma_alloc_coherent() 22388df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp */ 22398df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 22408df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp if (!xhci->small_streams_pool || !xhci->medium_streams_pool) 22418df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp goto fail; 22428df75f42f8e67e2851cdcf6da91640fb881defd1Sarah Sharp 22430ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* Set up the command ring to have one segments for now. */ 22443b72fca09d7aed0c1a390370eb3f3f4f0480702aAndiry Xu xhci->cmd_ring = xhci_ring_alloc(xhci, 1, TYPE_COMMAND, flags); 22450ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (!xhci->cmd_ring) 22460ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp goto fail; 2247700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "Allocated command ring at %p\n", xhci->cmd_ring); 2248700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "First segment DMA is 0x%llx\n", 2249700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman (unsigned long long)xhci->cmd_ring->first_seg->dma); 22500ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 22510ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* Set the address in the Command Ring Control register */ 22528e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp val_64 = xhci_read_64(xhci, &xhci->op_regs->cmd_ring); 22538e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp val_64 = (val_64 & (u64) CMD_RING_RSVD_BITS) | 22548e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp (xhci->cmd_ring->first_seg->dma & (u64) ~CMD_RING_RSVD_BITS) | 22550ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->cmd_ring->cycle_state; 22568e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp xhci_dbg(xhci, "// Setting command ring address to 0x%x\n", val); 22578e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp xhci_write_64(xhci, val_64, &xhci->op_regs->cmd_ring); 22580ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg_cmd_ptrs(xhci); 22590ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 22600ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp val = xhci_readl(xhci, &xhci->cap_regs->db_off); 22610ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp val &= DBOFF_MASK; 22620ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg(xhci, "// Doorbell array is located at offset 0x%x" 22630ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp " from cap regs base addr\n", val); 2264c50a00f8feba42c5bccff47e052e4cb0c95dcd2bDmitry Torokhov xhci->dba = (void __iomem *) xhci->cap_regs + val; 22650ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg_regs(xhci); 22660ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_print_run_regs(xhci); 22670ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* Set ir_set to interrupt register set 0 */ 2268c50a00f8feba42c5bccff47e052e4cb0c95dcd2bDmitry Torokhov xhci->ir_set = &xhci->run_regs->ir_set[0]; 22690ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 22700ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* 22710ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * Event ring setup: Allocate a normal ring, but also setup 22720ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * the event ring segment table (ERST). Section 4.9.3. 22730ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp */ 22740ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg(xhci, "// Allocating event ring\n"); 22753b72fca09d7aed0c1a390370eb3f3f4f0480702aAndiry Xu xhci->event_ring = xhci_ring_alloc(xhci, ERST_NUM_SEGS, TYPE_EVENT, 22767e393a834b41001174a8fb3ae3bc23a749467760Andiry Xu flags); 22770ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (!xhci->event_ring) 22780ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp goto fail; 22796648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp if (xhci_check_trb_in_td_math(xhci, flags) < 0) 22806648f29d3be2972a74ef8e29aa5d425ab4f1fc48Sarah Sharp goto fail; 22810ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 228222d45f01a836c2f5826b8b4b9e029e5f79afec57Sebastian Andrzej Siewior xhci->erst.entries = dma_alloc_coherent(dev, 228322d45f01a836c2f5826b8b4b9e029e5f79afec57Sebastian Andrzej Siewior sizeof(struct xhci_erst_entry) * ERST_NUM_SEGS, &dma, 228422d45f01a836c2f5826b8b4b9e029e5f79afec57Sebastian Andrzej Siewior GFP_KERNEL); 22850ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (!xhci->erst.entries) 22860ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp goto fail; 2287700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "// Allocated event ring segment table at 0x%llx\n", 2288700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman (unsigned long long)dma); 22890ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 22900ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp memset(xhci->erst.entries, 0, sizeof(struct xhci_erst_entry)*ERST_NUM_SEGS); 22910ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->erst.num_entries = ERST_NUM_SEGS; 22920ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->erst.erst_dma_addr = dma; 2293700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "Set ERST to 0; private num segs = %i, virt addr = %p, dma addr = 0x%llx\n", 22940ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->erst.num_entries, 2295700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci->erst.entries, 2296700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman (unsigned long long)xhci->erst.erst_dma_addr); 22970ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 22980ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* set ring base address and size for each segment table entry */ 22990ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp for (val = 0, seg = xhci->event_ring->first_seg; val < ERST_NUM_SEGS; val++) { 23000ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct xhci_erst_entry *entry = &xhci->erst.entries[val]; 230128ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans entry->seg_addr = cpu_to_le64(seg->dma); 230228ccd2962c66556d7037b2d9f1c11cdcd3b805d5Matt Evans entry->seg_size = cpu_to_le32(TRBS_PER_SEGMENT); 23030ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp entry->rsvd = 0; 23040ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp seg = seg->next; 23050ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp } 23060ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 23070ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* set ERST count with the number of entries in the segment table */ 23080ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp val = xhci_readl(xhci, &xhci->ir_set->erst_size); 23090ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp val &= ERST_SIZE_MASK; 23100ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp val |= ERST_NUM_SEGS; 23110ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg(xhci, "// Write ERST size = %i to ir_set 0 (some bits preserved)\n", 23120ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp val); 23130ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_writel(xhci, val, &xhci->ir_set->erst_size); 23140ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 23150ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg(xhci, "// Set ERST entries to point to event ring.\n"); 23160ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* set the segment table base address */ 2317700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "// Set ERST base address for ir_set 0 = 0x%llx\n", 2318700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman (unsigned long long)xhci->erst.erst_dma_addr); 23198e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp val_64 = xhci_read_64(xhci, &xhci->ir_set->erst_base); 23208e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp val_64 &= ERST_PTR_MASK; 23218e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp val_64 |= (xhci->erst.erst_dma_addr & (u64) ~ERST_PTR_MASK); 23228e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp xhci_write_64(xhci, val_64, &xhci->ir_set->erst_base); 23230ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 23240ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* Set the event ring dequeue address */ 232523e3be113f42790736319c049c78e5f9a4394c02Sarah Sharp xhci_set_hc_event_deq(xhci); 23260ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg(xhci, "Wrote ERST address to ir_set 0.\n"); 232709ece30e06b19994e6f3d260e5c4be18dce22714Dmitry Torokhov xhci_print_ir_set(xhci, 0); 23280ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 23290ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* 23300ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * XXX: Might need to set the Interrupter Moderation Register to 23310ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * something other than the default (~1ms minimum between interrupts). 23320ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * See section 5.5.1.2. 23330ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp */ 23343ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp init_completion(&xhci->addr_dev); 23353ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp for (i = 0; i < MAX_HC_SLOTS; ++i) 2336326b4810cc995209e31136af4202ed0414814ed5Randy Dunlap xhci->devs[i] = NULL; 2337f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp for (i = 0; i < USB_MAXCHILDREN; ++i) { 233820b67cf51fa606442bb343afad0ee1a393a6afb3Sarah Sharp xhci->bus_state[0].resume_done[i] = 0; 2339f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp xhci->bus_state[1].resume_done[i] = 0; 2340f6ff0ac878eb420011fa2448851dd48c3a7e7b31Sarah Sharp } 234166d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp 2342254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn if (scratchpad_alloc(xhci, flags)) 2343254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn goto fail; 2344da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp if (xhci_setup_port_arrays(xhci, flags)) 2345da6699ce4a889c3795624ccdcfe7181cc89f18e8Sarah Sharp goto fail; 2346254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 23479574323c39d1f8359a04843075d89c9f32d8b7e6Andiry Xu INIT_LIST_HEAD(&xhci->lpm_failed_devs); 23489574323c39d1f8359a04843075d89c9f32d8b7e6Andiry Xu 2349623bef9e03a60adc623b09673297ca7a1cdfb367Sarah Sharp /* Enable USB 3.0 device notifications for function remote wake, which 2350623bef9e03a60adc623b09673297ca7a1cdfb367Sarah Sharp * is necessary for allowing USB 3.0 devices to do remote wakeup from 2351623bef9e03a60adc623b09673297ca7a1cdfb367Sarah Sharp * U3 (device suspend). 2352623bef9e03a60adc623b09673297ca7a1cdfb367Sarah Sharp */ 2353623bef9e03a60adc623b09673297ca7a1cdfb367Sarah Sharp temp = xhci_readl(xhci, &xhci->op_regs->dev_notification); 2354623bef9e03a60adc623b09673297ca7a1cdfb367Sarah Sharp temp &= ~DEV_NOTE_MASK; 2355623bef9e03a60adc623b09673297ca7a1cdfb367Sarah Sharp temp |= DEV_NOTE_FWAKE; 2356623bef9e03a60adc623b09673297ca7a1cdfb367Sarah Sharp xhci_writel(xhci, temp, &xhci->op_regs->dev_notification); 2357623bef9e03a60adc623b09673297ca7a1cdfb367Sarah Sharp 235866d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp return 0; 2359254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 236066d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharpfail: 236166d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci_warn(xhci, "Couldn't initialize memory\n"); 236266d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci_mem_cleanup(xhci); 236366d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp return -ENOMEM; 236466d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp} 2365