xhci-mem.c revision 254c80a3a0eb811489f7410c3291f01a60e8e42f
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> 25527c6d7f188f116852141f50b4d008f966bb17f8Sarah Sharp#include <linux/dmapool.h> 2666d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp 2766d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp#include "xhci.h" 2866d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp 290ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp/* 300ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * Allocates a generic ring segment from the ring pool, sets the dma address, 310ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * initializes the segment to zero, and sets the private next pointer to NULL. 320ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * 330ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * Section 4.11.1.1: 340ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * "All components of all Command and Transfer TRBs shall be initialized to '0'" 350ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp */ 360ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharpstatic struct xhci_segment *xhci_segment_alloc(struct xhci_hcd *xhci, gfp_t flags) 370ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp{ 380ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct xhci_segment *seg; 390ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp dma_addr_t dma; 400ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 410ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp seg = kzalloc(sizeof *seg, flags); 420ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (!seg) 430ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp return 0; 44700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "Allocating priv segment structure at %p\n", seg); 450ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 460ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp seg->trbs = dma_pool_alloc(xhci->segment_pool, flags, &dma); 470ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (!seg->trbs) { 480ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp kfree(seg); 490ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp return 0; 500ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp } 51700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "// Allocating segment at %p (virtual) 0x%llx (DMA)\n", 52700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman seg->trbs, (unsigned long long)dma); 530ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 540ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp memset(seg->trbs, 0, SEGMENT_SIZE); 550ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp seg->dma = dma; 560ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp seg->next = NULL; 570ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 580ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp return seg; 590ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp} 600ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 610ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharpstatic void xhci_segment_free(struct xhci_hcd *xhci, struct xhci_segment *seg) 620ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp{ 630ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (!seg) 640ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp return; 650ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (seg->trbs) { 66700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "Freeing DMA segment at %p (virtual) 0x%llx (DMA)\n", 67700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman seg->trbs, (unsigned long long)seg->dma); 680ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp dma_pool_free(xhci->segment_pool, seg->trbs, seg->dma); 690ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp seg->trbs = NULL; 700ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp } 71700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "Freeing priv segment structure at %p\n", seg); 720ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp kfree(seg); 730ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp} 740ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 750ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp/* 760ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * Make the prev segment point to the next segment. 770ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * 780ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * Change the last TRB in the prev segment to be a Link TRB which points to the 790ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * DMA address of the next segment. The caller needs to set any Link TRB 800ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * related flags, such as End TRB, Toggle Cycle, and no snoop. 810ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp */ 820ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharpstatic void xhci_link_segments(struct xhci_hcd *xhci, struct xhci_segment *prev, 830ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct xhci_segment *next, bool link_trbs) 840ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp{ 850ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp u32 val; 860ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 870ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (!prev || !next) 880ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp return; 890ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp prev->next = next; 900ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (link_trbs) { 918e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp prev->trbs[TRBS_PER_SEGMENT-1].link.segment_ptr = next->dma; 920ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 930ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* Set the last TRB in the segment to have a TRB type ID of Link TRB */ 940ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp val = prev->trbs[TRBS_PER_SEGMENT-1].link.control; 950ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp val &= ~TRB_TYPE_BITMASK; 960ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp val |= TRB_TYPE(TRB_LINK); 970ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp prev->trbs[TRBS_PER_SEGMENT-1].link.control = val; 980ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp } 99700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "Linking segment 0x%llx to segment 0x%llx (DMA)\n", 100700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman (unsigned long long)prev->dma, 101700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman (unsigned long long)next->dma); 1020ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp} 1030ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 1040ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp/* XXX: Do we need the hcd structure in all these functions? */ 105f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharpvoid xhci_ring_free(struct xhci_hcd *xhci, struct xhci_ring *ring) 1060ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp{ 1070ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct xhci_segment *seg; 1080ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct xhci_segment *first_seg; 1090ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 1100ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (!ring || !ring->first_seg) 1110ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp return; 1120ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp first_seg = ring->first_seg; 1130ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp seg = first_seg->next; 114700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "Freeing ring at %p\n", ring); 1150ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp while (seg != first_seg) { 1160ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct xhci_segment *next = seg->next; 1170ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_segment_free(xhci, seg); 1180ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp seg = next; 1190ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp } 1200ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_segment_free(xhci, first_seg); 1210ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp ring->first_seg = NULL; 1220ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp kfree(ring); 1230ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp} 1240ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 1250ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp/** 1260ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * Create a new ring with zero or more segments. 1270ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * 1280ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * Link each segment together into a ring. 1290ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * Set the end flag and the cycle toggle bit on the last segment. 1300ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * See section 4.9.1 and figures 15 and 16. 1310ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp */ 1320ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharpstatic struct xhci_ring *xhci_ring_alloc(struct xhci_hcd *xhci, 1330ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp unsigned int num_segs, bool link_trbs, gfp_t flags) 1340ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp{ 1350ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct xhci_ring *ring; 1360ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct xhci_segment *prev; 1370ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 1380ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp ring = kzalloc(sizeof *(ring), flags); 139700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "Allocating ring at %p\n", ring); 1400ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (!ring) 1410ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp return 0; 1420ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 143d0e96f5a71a032ced0c35f521c1cbd67e816922aSarah Sharp INIT_LIST_HEAD(&ring->td_list); 144ae636747146ea97efa18e04576acd3416e2514f5Sarah Sharp INIT_LIST_HEAD(&ring->cancelled_td_list); 1450ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (num_segs == 0) 1460ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp return ring; 1470ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 1480ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp ring->first_seg = xhci_segment_alloc(xhci, flags); 1490ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (!ring->first_seg) 1500ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp goto fail; 1510ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp num_segs--; 1520ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 1530ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp prev = ring->first_seg; 1540ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp while (num_segs > 0) { 1550ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct xhci_segment *next; 1560ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 1570ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp next = xhci_segment_alloc(xhci, flags); 1580ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (!next) 1590ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp goto fail; 1600ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_link_segments(xhci, prev, next, link_trbs); 1610ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 1620ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp prev = next; 1630ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp num_segs--; 1640ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp } 1650ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_link_segments(xhci, prev, ring->first_seg, link_trbs); 1660ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 1670ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (link_trbs) { 1680ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* See section 4.9.2.1 and 6.4.4.1 */ 1690ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp prev->trbs[TRBS_PER_SEGMENT-1].link.control |= (LINK_TOGGLE); 1700ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg(xhci, "Wrote link toggle flag to" 171700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman " segment %p (virtual), 0x%llx (DMA)\n", 172700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman prev, (unsigned long long)prev->dma); 1730ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp } 1740ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* The ring is empty, so the enqueue pointer == dequeue pointer */ 1750ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp ring->enqueue = ring->first_seg->trbs; 1767f84eef0dafb1d318263d8b71c38700aaf2d530dSarah Sharp ring->enq_seg = ring->first_seg; 1770ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp ring->dequeue = ring->enqueue; 1787f84eef0dafb1d318263d8b71c38700aaf2d530dSarah Sharp ring->deq_seg = ring->first_seg; 1790ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* The ring is initialized to 0. The producer must write 1 to the cycle 1800ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * bit to handover ownership of the TRB, so PCS = 1. The consumer must 1810ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * compare CCS to the cycle bit to check ownership, so CCS = 1. 1820ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp */ 1830ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp ring->cycle_state = 1; 1840ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 1850ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp return ring; 1860ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 1870ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharpfail: 1880ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_ring_free(xhci, ring); 1890ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp return 0; 1900ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp} 1910ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 192d0e96f5a71a032ced0c35f521c1cbd67e816922aSarah Sharp/* All the xhci_tds in the ring's TD list should be freed at this point */ 1933ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharpvoid xhci_free_virt_device(struct xhci_hcd *xhci, int slot_id) 1943ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp{ 1953ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp struct xhci_virt_device *dev; 1963ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp int i; 1973ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 1983ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Slot ID 0 is reserved */ 1993ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (slot_id == 0 || !xhci->devs[slot_id]) 2003ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp return; 2013ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 2023ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dev = xhci->devs[slot_id]; 2038e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp xhci->dcbaa->dev_context_ptrs[slot_id] = 0; 2043ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (!dev) 2053ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp return; 2063ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 2073ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp for (i = 0; i < 31; ++i) 2083ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (dev->ep_rings[i]) 2093ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci_ring_free(xhci, dev->ep_rings[i]); 2103ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 2113ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (dev->in_ctx) 2123ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dma_pool_free(xhci->device_pool, 2133ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dev->in_ctx, dev->in_ctx_dma); 2143ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (dev->out_ctx) 2153ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dma_pool_free(xhci->device_pool, 2163ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dev->out_ctx, dev->out_ctx_dma); 2173ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp kfree(xhci->devs[slot_id]); 2183ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci->devs[slot_id] = 0; 2193ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp} 2203ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 2213ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharpint xhci_alloc_virt_device(struct xhci_hcd *xhci, int slot_id, 2223ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp struct usb_device *udev, gfp_t flags) 2233ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp{ 2243ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dma_addr_t dma; 2253ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp struct xhci_virt_device *dev; 2263ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 2273ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Slot ID 0 is reserved */ 2283ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (slot_id == 0 || xhci->devs[slot_id]) { 2293ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci_warn(xhci, "Bad Slot ID %d\n", slot_id); 2303ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp return 0; 2313ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp } 2323ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 2333ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci->devs[slot_id] = kzalloc(sizeof(*xhci->devs[slot_id]), flags); 2343ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (!xhci->devs[slot_id]) 2353ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp return 0; 2363ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dev = xhci->devs[slot_id]; 2373ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 2383ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Allocate the (output) device context that will be used in the HC */ 2393ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dev->out_ctx = dma_pool_alloc(xhci->device_pool, flags, &dma); 2403ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (!dev->out_ctx) 2413ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp goto fail; 2423ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dev->out_ctx_dma = dma; 243700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "Slot %d output ctx = 0x%llx (dma)\n", slot_id, 244700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman (unsigned long long)dma); 2453ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp memset(dev->out_ctx, 0, sizeof(*dev->out_ctx)); 2463ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 2473ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Allocate the (input) device context for address device command */ 2483ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dev->in_ctx = dma_pool_alloc(xhci->device_pool, flags, &dma); 2493ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (!dev->in_ctx) 2503ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp goto fail; 2513ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dev->in_ctx_dma = dma; 252700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "Slot %d input ctx = 0x%llx (dma)\n", slot_id, 253700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman (unsigned long long)dma); 2543ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp memset(dev->in_ctx, 0, sizeof(*dev->in_ctx)); 2553ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 2563ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Allocate endpoint 0 ring */ 2573ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dev->ep_rings[0] = xhci_ring_alloc(xhci, 1, true, flags); 2583ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (!dev->ep_rings[0]) 2593ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp goto fail; 2603ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 261f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp init_completion(&dev->cmd_completion); 262f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 2633ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* 2643ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp * Point to output device context in dcbaa; skip the output control 2653ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp * context, which is eight 32 bit fields (or 32 bytes long) 2663ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp */ 2678e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp xhci->dcbaa->dev_context_ptrs[slot_id] = 2683ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp (u32) dev->out_ctx_dma + (32); 269700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "Set slot id %d dcbaa entry %p to 0x%llx\n", 2703ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp slot_id, 2718e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp &xhci->dcbaa->dev_context_ptrs[slot_id], 272700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman (unsigned long long)dev->out_ctx_dma); 2733ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 2743ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp return 1; 2753ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharpfail: 2763ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci_free_virt_device(xhci, slot_id); 2773ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp return 0; 2783ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp} 2793ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 2803ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp/* Setup an xHCI virtual device for a Set Address command */ 2813ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharpint xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *udev) 2823ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp{ 2833ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp struct xhci_virt_device *dev; 2843ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp struct xhci_ep_ctx *ep0_ctx; 2853ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp struct usb_device *top_dev; 2863ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 2873ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dev = xhci->devs[udev->slot_id]; 2883ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Slot ID 0 is reserved */ 2893ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (udev->slot_id == 0 || !dev) { 2903ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci_warn(xhci, "Slot ID %d is not assigned to this device\n", 2913ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp udev->slot_id); 2923ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp return -EINVAL; 2933ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp } 2943ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp ep0_ctx = &dev->in_ctx->ep[0]; 2953ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 2963ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* 2) New slot context and endpoint 0 context are valid*/ 2973ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dev->in_ctx->add_flags = SLOT_FLAG | EP0_FLAG; 2983ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 2993ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* 3) Only the control endpoint is valid - one endpoint context */ 3003ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dev->in_ctx->slot.dev_info |= LAST_CTX(1); 3013ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 3023ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp switch (udev->speed) { 3033ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp case USB_SPEED_SUPER: 3043ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dev->in_ctx->slot.dev_info |= (u32) udev->route; 3053ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dev->in_ctx->slot.dev_info |= (u32) SLOT_SPEED_SS; 3063ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp break; 3073ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp case USB_SPEED_HIGH: 3083ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dev->in_ctx->slot.dev_info |= (u32) SLOT_SPEED_HS; 3093ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp break; 3103ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp case USB_SPEED_FULL: 3113ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dev->in_ctx->slot.dev_info |= (u32) SLOT_SPEED_FS; 3123ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp break; 3133ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp case USB_SPEED_LOW: 3143ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dev->in_ctx->slot.dev_info |= (u32) SLOT_SPEED_LS; 3153ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp break; 3163ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp case USB_SPEED_VARIABLE: 3173ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci_dbg(xhci, "FIXME xHCI doesn't support wireless speeds\n"); 3183ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp return -EINVAL; 3193ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp break; 3203ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp default: 3213ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Speed was set earlier, this shouldn't happen. */ 3223ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp BUG(); 3233ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp } 3243ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Find the root hub port this device is under */ 3253ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp for (top_dev = udev; top_dev->parent && top_dev->parent->parent; 3263ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp top_dev = top_dev->parent) 3273ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Found device below root hub */; 3283ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dev->in_ctx->slot.dev_info2 |= (u32) ROOT_HUB_PORT(top_dev->portnum); 3293ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci_dbg(xhci, "Set root hub portnum to %d\n", top_dev->portnum); 3303ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 3313ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Is this a LS/FS device under a HS hub? */ 3323ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* 3333ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp * FIXME: I don't think this is right, where does the TT info for the 3343ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp * roothub or parent hub come from? 3353ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp */ 3363ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if ((udev->speed == USB_SPEED_LOW || udev->speed == USB_SPEED_FULL) && 3373ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp udev->tt) { 3383ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dev->in_ctx->slot.tt_info = udev->tt->hub->slot_id; 3393ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dev->in_ctx->slot.tt_info |= udev->ttport << 8; 3403ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp } 341700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "udev->tt = %p\n", udev->tt); 3423ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci_dbg(xhci, "udev->ttport = 0x%x\n", udev->ttport); 3433ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 3443ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Step 4 - ring already allocated */ 3453ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Step 5 */ 3463ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp ep0_ctx->ep_info2 = EP_TYPE(CTRL_EP); 3473ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* 3483ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp * See section 4.3 bullet 6: 3493ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp * The default Max Packet size for ep0 is "8 bytes for a USB2 3503ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp * LS/FS/HS device or 512 bytes for a USB3 SS device" 3513ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp * XXX: Not sure about wireless USB devices. 3523ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp */ 3533ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (udev->speed == USB_SPEED_SUPER) 3543ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp ep0_ctx->ep_info2 |= MAX_PACKET(512); 3553ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp else 3563ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp ep0_ctx->ep_info2 |= MAX_PACKET(8); 3573ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* EP 0 can handle "burst" sizes of 1, so Max Burst Size field is 0 */ 3583ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp ep0_ctx->ep_info2 |= MAX_BURST(0); 3593ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp ep0_ctx->ep_info2 |= ERROR_COUNT(3); 3603ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 3618e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp ep0_ctx->deq = 3623ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dev->ep_rings[0]->first_seg->dma; 3638e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp ep0_ctx->deq |= dev->ep_rings[0]->cycle_state; 3643ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 3653ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* Steps 7 and 8 were done in xhci_alloc_virt_device() */ 3663ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 3673ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp return 0; 3683ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp} 3693ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 370f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp/* Return the polling or NAK interval. 371f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp * 372f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp * The polling interval is expressed in "microframes". If xHCI's Interval field 373f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp * is set to N, it will service the endpoint every 2^(Interval)*125us. 374f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp * 375f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp * The NAK interval is one NAK per 1 to 255 microframes, or no NAKs if interval 376f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp * is set to 0. 377f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp */ 378f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharpstatic inline unsigned int xhci_get_endpoint_interval(struct usb_device *udev, 379f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp struct usb_host_endpoint *ep) 380f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp{ 381f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp unsigned int interval = 0; 382f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 383f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp switch (udev->speed) { 384f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp case USB_SPEED_HIGH: 385f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp /* Max NAK rate */ 386f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (usb_endpoint_xfer_control(&ep->desc) || 387f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp usb_endpoint_xfer_bulk(&ep->desc)) 388f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp interval = ep->desc.bInterval; 389f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp /* Fall through - SS and HS isoc/int have same decoding */ 390f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp case USB_SPEED_SUPER: 391f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (usb_endpoint_xfer_int(&ep->desc) || 392f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp usb_endpoint_xfer_isoc(&ep->desc)) { 393f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (ep->desc.bInterval == 0) 394f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp interval = 0; 395f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp else 396f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp interval = ep->desc.bInterval - 1; 397f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (interval > 15) 398f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp interval = 15; 399f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (interval != ep->desc.bInterval + 1) 400f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp dev_warn(&udev->dev, "ep %#x - rounding interval to %d microframes\n", 401f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp ep->desc.bEndpointAddress, 1 << interval); 402f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp } 403f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp break; 404f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp /* Convert bInterval (in 1-255 frames) to microframes and round down to 405f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp * nearest power of 2. 406f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp */ 407f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp case USB_SPEED_FULL: 408f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp case USB_SPEED_LOW: 409f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (usb_endpoint_xfer_int(&ep->desc) || 410f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp usb_endpoint_xfer_isoc(&ep->desc)) { 411f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp interval = fls(8*ep->desc.bInterval) - 1; 412f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (interval > 10) 413f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp interval = 10; 414f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (interval < 3) 415f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp interval = 3; 416f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if ((1 << interval) != 8*ep->desc.bInterval) 417f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp dev_warn(&udev->dev, "ep %#x - rounding interval to %d microframes\n", 418f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp ep->desc.bEndpointAddress, 1 << interval); 419f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp } 420f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp break; 421f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp default: 422f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp BUG(); 423f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp } 424f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp return EP_INTERVAL(interval); 425f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp} 426f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 427f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharpstatic inline u32 xhci_get_endpoint_type(struct usb_device *udev, 428f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp struct usb_host_endpoint *ep) 429f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp{ 430f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp int in; 431f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp u32 type; 432f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 433f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp in = usb_endpoint_dir_in(&ep->desc); 434f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (usb_endpoint_xfer_control(&ep->desc)) { 435f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp type = EP_TYPE(CTRL_EP); 436f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp } else if (usb_endpoint_xfer_bulk(&ep->desc)) { 437f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (in) 438f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp type = EP_TYPE(BULK_IN_EP); 439f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp else 440f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp type = EP_TYPE(BULK_OUT_EP); 441f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp } else if (usb_endpoint_xfer_isoc(&ep->desc)) { 442f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (in) 443f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp type = EP_TYPE(ISOC_IN_EP); 444f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp else 445f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp type = EP_TYPE(ISOC_OUT_EP); 446f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp } else if (usb_endpoint_xfer_int(&ep->desc)) { 447f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (in) 448f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp type = EP_TYPE(INT_IN_EP); 449f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp else 450f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp type = EP_TYPE(INT_OUT_EP); 451f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp } else { 452f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp BUG(); 453f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp } 454f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp return type; 455f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp} 456f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 457f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharpint xhci_endpoint_init(struct xhci_hcd *xhci, 458f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp struct xhci_virt_device *virt_dev, 459f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp struct usb_device *udev, 460f88ba78d9ac0e1f583da4cada80b8816ca761a3fSarah Sharp struct usb_host_endpoint *ep, 461f88ba78d9ac0e1f583da4cada80b8816ca761a3fSarah Sharp gfp_t mem_flags) 462f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp{ 463f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp unsigned int ep_index; 464f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp struct xhci_ep_ctx *ep_ctx; 465f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp struct xhci_ring *ep_ring; 466f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp unsigned int max_packet; 467f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp unsigned int max_burst; 468f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 469f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp ep_index = xhci_get_endpoint_index(&ep->desc); 470f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp ep_ctx = &virt_dev->in_ctx->ep[ep_index]; 471f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 472f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp /* Set up the endpoint ring */ 473f88ba78d9ac0e1f583da4cada80b8816ca761a3fSarah Sharp virt_dev->new_ep_rings[ep_index] = xhci_ring_alloc(xhci, 1, true, mem_flags); 474f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (!virt_dev->new_ep_rings[ep_index]) 475f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp return -ENOMEM; 476f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp ep_ring = virt_dev->new_ep_rings[ep_index]; 4778e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp ep_ctx->deq = ep_ring->first_seg->dma | ep_ring->cycle_state; 478f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 479f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp ep_ctx->ep_info = xhci_get_endpoint_interval(udev, ep); 480f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 481f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp /* FIXME dig Mult and streams info out of ep companion desc */ 482f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 48347692d179f7a88794bcd302e53ca7899d7592db9Sarah Sharp /* Allow 3 retries for everything but isoc; 48447692d179f7a88794bcd302e53ca7899d7592db9Sarah Sharp * error count = 0 means infinite retries. 48547692d179f7a88794bcd302e53ca7899d7592db9Sarah Sharp */ 486f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (!usb_endpoint_xfer_isoc(&ep->desc)) 487f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp ep_ctx->ep_info2 = ERROR_COUNT(3); 488f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp else 48947692d179f7a88794bcd302e53ca7899d7592db9Sarah Sharp ep_ctx->ep_info2 = ERROR_COUNT(1); 490f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 491f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp ep_ctx->ep_info2 |= xhci_get_endpoint_type(udev, ep); 492f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 493f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp /* Set the max packet size and max burst */ 494f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp switch (udev->speed) { 495f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp case USB_SPEED_SUPER: 496f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp max_packet = ep->desc.wMaxPacketSize; 497f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp ep_ctx->ep_info2 |= MAX_PACKET(max_packet); 498b10de142119a676552df3f0d2e3a9d647036c26aSarah Sharp /* dig out max burst from ep companion desc */ 499b7d6d99896a6cf38dc354d673afd3fbde10b86c2Sarah Sharp if (!ep->ss_ep_comp) { 500b7d6d99896a6cf38dc354d673afd3fbde10b86c2Sarah Sharp xhci_warn(xhci, "WARN no SS endpoint companion descriptor.\n"); 501b7d6d99896a6cf38dc354d673afd3fbde10b86c2Sarah Sharp max_packet = 0; 502b7d6d99896a6cf38dc354d673afd3fbde10b86c2Sarah Sharp } else { 503b7d6d99896a6cf38dc354d673afd3fbde10b86c2Sarah Sharp max_packet = ep->ss_ep_comp->desc.bMaxBurst; 504b7d6d99896a6cf38dc354d673afd3fbde10b86c2Sarah Sharp } 505b10de142119a676552df3f0d2e3a9d647036c26aSarah Sharp ep_ctx->ep_info2 |= MAX_BURST(max_packet); 506f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp break; 507f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp case USB_SPEED_HIGH: 508f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp /* bits 11:12 specify the number of additional transaction 509f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp * opportunities per microframe (USB 2.0, section 9.6.6) 510f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp */ 511f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp if (usb_endpoint_xfer_isoc(&ep->desc) || 512f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp usb_endpoint_xfer_int(&ep->desc)) { 513f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp max_burst = (ep->desc.wMaxPacketSize & 0x1800) >> 11; 514f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp ep_ctx->ep_info2 |= MAX_BURST(max_burst); 515f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp } 516f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp /* Fall through */ 517f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp case USB_SPEED_FULL: 518f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp case USB_SPEED_LOW: 519f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp max_packet = ep->desc.wMaxPacketSize & 0x3ff; 520f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp ep_ctx->ep_info2 |= MAX_PACKET(max_packet); 521f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp break; 522f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp default: 523f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp BUG(); 524f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp } 525f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp /* FIXME Debug endpoint context */ 526f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp return 0; 527f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp} 528f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 529f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharpvoid xhci_endpoint_zero(struct xhci_hcd *xhci, 530f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp struct xhci_virt_device *virt_dev, 531f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp struct usb_host_endpoint *ep) 532f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp{ 533f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp unsigned int ep_index; 534f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp struct xhci_ep_ctx *ep_ctx; 535f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 536f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp ep_index = xhci_get_endpoint_index(&ep->desc); 537f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp ep_ctx = &virt_dev->in_ctx->ep[ep_index]; 538f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 539f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp ep_ctx->ep_info = 0; 540f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp ep_ctx->ep_info2 = 0; 5418e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp ep_ctx->deq = 0; 542f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp ep_ctx->tx_info = 0; 543f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp /* Don't free the endpoint ring until the set interface or configuration 544f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp * request succeeds. 545f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp */ 546f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp} 547f94e0186312b0fc39f41eed4e21836ed74b7efe1Sarah Sharp 548254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn/* Set up the scratchpad buffer array and scratchpad buffers, if needed. */ 549254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Younstatic int scratchpad_alloc(struct xhci_hcd *xhci, gfp_t flags) 550254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn{ 551254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn int i; 552254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn struct device *dev = xhci_to_hcd(xhci)->self.controller; 553254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn int num_sp = HCS_MAX_SCRATCHPAD(xhci->hcs_params2); 554254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 555254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci_dbg(xhci, "Allocating %d scratchpad buffers\n", num_sp); 556254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 557254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn if (!num_sp) 558254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn return 0; 559254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 560254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad = kzalloc(sizeof(*xhci->scratchpad), flags); 561254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn if (!xhci->scratchpad) 562254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn goto fail_sp; 563254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 564254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_array = 565254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn pci_alloc_consistent(to_pci_dev(dev), 566254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn num_sp * sizeof(u64), 567254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn &xhci->scratchpad->sp_dma); 568254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn if (!xhci->scratchpad->sp_array) 569254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn goto fail_sp2; 570254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 571254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_buffers = kzalloc(sizeof(void *) * num_sp, flags); 572254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn if (!xhci->scratchpad->sp_buffers) 573254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn goto fail_sp3; 574254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 575254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_dma_buffers = 576254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn kzalloc(sizeof(dma_addr_t) * num_sp, flags); 577254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 578254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn if (!xhci->scratchpad->sp_dma_buffers) 579254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn goto fail_sp4; 580254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 581254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->dcbaa->dev_context_ptrs[0] = xhci->scratchpad->sp_dma; 582254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn for (i = 0; i < num_sp; i++) { 583254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn dma_addr_t dma; 584254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn void *buf = pci_alloc_consistent(to_pci_dev(dev), 585254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->page_size, &dma); 586254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn if (!buf) 587254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn goto fail_sp5; 588254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 589254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_array[i] = dma; 590254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_buffers[i] = buf; 591254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_dma_buffers[i] = dma; 592254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn } 593254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 594254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn return 0; 595254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 596254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn fail_sp5: 597254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn for (i = i - 1; i >= 0; i--) { 598254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn pci_free_consistent(to_pci_dev(dev), xhci->page_size, 599254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_buffers[i], 600254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_dma_buffers[i]); 601254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn } 602254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn kfree(xhci->scratchpad->sp_dma_buffers); 603254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 604254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn fail_sp4: 605254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn kfree(xhci->scratchpad->sp_buffers); 606254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 607254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn fail_sp3: 608254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn pci_free_consistent(to_pci_dev(dev), num_sp * sizeof(u64), 609254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_array, 610254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_dma); 611254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 612254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn fail_sp2: 613254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn kfree(xhci->scratchpad); 614254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad = NULL; 615254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 616254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn fail_sp: 617254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn return -ENOMEM; 618254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn} 619254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 620254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Younstatic void scratchpad_free(struct xhci_hcd *xhci) 621254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn{ 622254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn int num_sp; 623254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn int i; 624254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn struct pci_dev *pdev = to_pci_dev(xhci_to_hcd(xhci)->self.controller); 625254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 626254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn if (!xhci->scratchpad) 627254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn return; 628254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 629254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn num_sp = HCS_MAX_SCRATCHPAD(xhci->hcs_params2); 630254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 631254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn for (i = 0; i < num_sp; i++) { 632254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn pci_free_consistent(pdev, xhci->page_size, 633254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_buffers[i], 634254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_dma_buffers[i]); 635254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn } 636254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn kfree(xhci->scratchpad->sp_dma_buffers); 637254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn kfree(xhci->scratchpad->sp_buffers); 638254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn pci_free_consistent(pdev, num_sp * sizeof(u64), 639254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_array, 640254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad->sp_dma); 641254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn kfree(xhci->scratchpad); 642254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn xhci->scratchpad = NULL; 643254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn} 644254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 64566d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharpvoid xhci_mem_cleanup(struct xhci_hcd *xhci) 64666d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp{ 6470ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct pci_dev *pdev = to_pci_dev(xhci_to_hcd(xhci)->self.controller); 6480ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp int size; 6493ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp int i; 6500ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 6510ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* Free the Event Ring Segment Table and the actual Event Ring */ 6520ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_writel(xhci, 0, &xhci->ir_set->erst_size); 6538e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp xhci_write_64(xhci, 0, &xhci->ir_set->erst_base); 6548e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp xhci_write_64(xhci, 0, &xhci->ir_set->erst_dequeue); 6550ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp size = sizeof(struct xhci_erst_entry)*(xhci->erst.num_entries); 6560ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (xhci->erst.entries) 6570ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp pci_free_consistent(pdev, size, 6580ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->erst.entries, xhci->erst.erst_dma_addr); 6590ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->erst.entries = NULL; 6600ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg(xhci, "Freed ERST\n"); 6610ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (xhci->event_ring) 6620ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_ring_free(xhci, xhci->event_ring); 6630ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->event_ring = NULL; 6640ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg(xhci, "Freed event ring\n"); 6650ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 6668e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp xhci_write_64(xhci, 0, &xhci->op_regs->cmd_ring); 6670ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (xhci->cmd_ring) 6680ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_ring_free(xhci, xhci->cmd_ring); 6690ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->cmd_ring = NULL; 6700ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg(xhci, "Freed command ring\n"); 6713ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 6723ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp for (i = 1; i < MAX_HC_SLOTS; ++i) 6733ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci_free_virt_device(xhci, i); 6743ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 6750ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (xhci->segment_pool) 6760ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp dma_pool_destroy(xhci->segment_pool); 6770ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->segment_pool = NULL; 6780ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg(xhci, "Freed segment pool\n"); 6793ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 6803ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (xhci->device_pool) 6813ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp dma_pool_destroy(xhci->device_pool); 6823ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci->device_pool = NULL; 6833ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci_dbg(xhci, "Freed device context pool\n"); 6843ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 6858e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp xhci_write_64(xhci, 0, &xhci->op_regs->dcbaa_ptr); 686a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp if (xhci->dcbaa) 687a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp pci_free_consistent(pdev, sizeof(*xhci->dcbaa), 688a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp xhci->dcbaa, xhci->dcbaa->dma); 689a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp xhci->dcbaa = NULL; 6903ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 69166d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci->page_size = 0; 69266d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci->page_shift = 0; 693254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn scratchpad_free(xhci); 69466d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp} 69566d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp 69666d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharpint xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) 69766d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp{ 6980ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp dma_addr_t dma; 6990ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct device *dev = xhci_to_hcd(xhci)->self.controller; 70066d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp unsigned int val, val2; 7018e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp u64 val_64; 7020ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct xhci_segment *seg; 70366d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp u32 page_size; 70466d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp int i; 70566d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp 70666d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp page_size = xhci_readl(xhci, &xhci->op_regs->page_size); 70766d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci_dbg(xhci, "Supported page size register = 0x%x\n", page_size); 70866d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp for (i = 0; i < 16; i++) { 70966d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp if ((0x1 & page_size) != 0) 71066d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp break; 71166d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp page_size = page_size >> 1; 71266d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp } 71366d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp if (i < 16) 71466d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci_dbg(xhci, "Supported page size of %iK\n", (1 << (i+12)) / 1024); 71566d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp else 71666d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci_warn(xhci, "WARN: no supported page size\n"); 71766d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp /* Use 4K pages, since that's common and the minimum the HC supports */ 71866d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci->page_shift = 12; 71966d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci->page_size = 1 << xhci->page_shift; 72066d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci_dbg(xhci, "HCD page size set to %iK\n", xhci->page_size / 1024); 72166d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp 72266d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp /* 72366d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp * Program the Number of Device Slots Enabled field in the CONFIG 72466d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp * register with the max value of slots the HC can handle. 72566d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp */ 72666d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp val = HCS_MAX_SLOTS(xhci_readl(xhci, &xhci->cap_regs->hcs_params1)); 72766d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci_dbg(xhci, "// xHC can handle at most %d device slots.\n", 72866d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp (unsigned int) val); 72966d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp val2 = xhci_readl(xhci, &xhci->op_regs->config_reg); 73066d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp val |= (val2 & ~HCS_SLOTS_MASK); 73166d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci_dbg(xhci, "// Setting Max device slots reg = 0x%x.\n", 73266d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp (unsigned int) val); 73366d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci_writel(xhci, val, &xhci->op_regs->config_reg); 73466d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp 7350ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* 736a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp * Section 5.4.8 - doorbell array must be 737a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp * "physically contiguous and 64-byte (cache line) aligned". 738a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp */ 739a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp xhci->dcbaa = pci_alloc_consistent(to_pci_dev(dev), 740a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp sizeof(*xhci->dcbaa), &dma); 741a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp if (!xhci->dcbaa) 742a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp goto fail; 743a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp memset(xhci->dcbaa, 0, sizeof *(xhci->dcbaa)); 744a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp xhci->dcbaa->dma = dma; 745700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "// Device context base array address = 0x%llx (DMA), %p (virt)\n", 746700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman (unsigned long long)xhci->dcbaa->dma, xhci->dcbaa); 7478e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp xhci_write_64(xhci, dma, &xhci->op_regs->dcbaa_ptr); 748a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp 749a74588f94655263b96dacbbf14aac0958d8b7409Sarah Sharp /* 7500ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * Initialize the ring segment pool. The ring must be a contiguous 7510ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * structure comprised of TRBs. The TRBs must be 16 byte aligned, 7520ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * however, the command ring segment needs 64-byte aligned segments, 7530ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * so we pick the greater alignment need. 7540ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp */ 7550ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->segment_pool = dma_pool_create("xHCI ring segments", dev, 7560ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp SEGMENT_SIZE, 64, xhci->page_size); 7573ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* See Table 46 and Note on Figure 55 */ 7583ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp /* FIXME support 64-byte contexts */ 7593ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci->device_pool = dma_pool_create("xHCI input/output contexts", dev, 7603ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp sizeof(struct xhci_device_control), 7613ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp 64, xhci->page_size); 7623ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp if (!xhci->segment_pool || !xhci->device_pool) 7630ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp goto fail; 7640ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 7650ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* Set up the command ring to have one segments for now. */ 7660ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->cmd_ring = xhci_ring_alloc(xhci, 1, true, flags); 7670ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (!xhci->cmd_ring) 7680ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp goto fail; 769700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "Allocated command ring at %p\n", xhci->cmd_ring); 770700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "First segment DMA is 0x%llx\n", 771700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman (unsigned long long)xhci->cmd_ring->first_seg->dma); 7720ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 7730ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* Set the address in the Command Ring Control register */ 7748e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp val_64 = xhci_read_64(xhci, &xhci->op_regs->cmd_ring); 7758e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp val_64 = (val_64 & (u64) CMD_RING_RSVD_BITS) | 7768e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp (xhci->cmd_ring->first_seg->dma & (u64) ~CMD_RING_RSVD_BITS) | 7770ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->cmd_ring->cycle_state; 7788e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp xhci_dbg(xhci, "// Setting command ring address to 0x%x\n", val); 7798e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp xhci_write_64(xhci, val_64, &xhci->op_regs->cmd_ring); 7800ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg_cmd_ptrs(xhci); 7810ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 7820ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp val = xhci_readl(xhci, &xhci->cap_regs->db_off); 7830ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp val &= DBOFF_MASK; 7840ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg(xhci, "// Doorbell array is located at offset 0x%x" 7850ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp " from cap regs base addr\n", val); 7860ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->dba = (void *) xhci->cap_regs + val; 7870ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg_regs(xhci); 7880ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_print_run_regs(xhci); 7890ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* Set ir_set to interrupt register set 0 */ 7900ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->ir_set = (void *) xhci->run_regs->ir_set; 7910ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 7920ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* 7930ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * Event ring setup: Allocate a normal ring, but also setup 7940ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * the event ring segment table (ERST). Section 4.9.3. 7950ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp */ 7960ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg(xhci, "// Allocating event ring\n"); 7970ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->event_ring = xhci_ring_alloc(xhci, ERST_NUM_SEGS, false, flags); 7980ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (!xhci->event_ring) 7990ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp goto fail; 8000ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 8010ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->erst.entries = pci_alloc_consistent(to_pci_dev(dev), 8020ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp sizeof(struct xhci_erst_entry)*ERST_NUM_SEGS, &dma); 8030ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp if (!xhci->erst.entries) 8040ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp goto fail; 805700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "// Allocated event ring segment table at 0x%llx\n", 806700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman (unsigned long long)dma); 8070ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 8080ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp memset(xhci->erst.entries, 0, sizeof(struct xhci_erst_entry)*ERST_NUM_SEGS); 8090ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->erst.num_entries = ERST_NUM_SEGS; 8100ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->erst.erst_dma_addr = dma; 811700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "Set ERST to 0; private num segs = %i, virt addr = %p, dma addr = 0x%llx\n", 8120ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci->erst.num_entries, 813700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci->erst.entries, 814700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman (unsigned long long)xhci->erst.erst_dma_addr); 8150ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 8160ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* set ring base address and size for each segment table entry */ 8170ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp for (val = 0, seg = xhci->event_ring->first_seg; val < ERST_NUM_SEGS; val++) { 8180ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp struct xhci_erst_entry *entry = &xhci->erst.entries[val]; 8198e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp entry->seg_addr = seg->dma; 8200ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp entry->seg_size = TRBS_PER_SEGMENT; 8210ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp entry->rsvd = 0; 8220ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp seg = seg->next; 8230ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp } 8240ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 8250ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* set ERST count with the number of entries in the segment table */ 8260ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp val = xhci_readl(xhci, &xhci->ir_set->erst_size); 8270ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp val &= ERST_SIZE_MASK; 8280ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp val |= ERST_NUM_SEGS; 8290ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg(xhci, "// Write ERST size = %i to ir_set 0 (some bits preserved)\n", 8300ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp val); 8310ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_writel(xhci, val, &xhci->ir_set->erst_size); 8320ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 8330ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg(xhci, "// Set ERST entries to point to event ring.\n"); 8340ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* set the segment table base address */ 835700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman xhci_dbg(xhci, "// Set ERST base address for ir_set 0 = 0x%llx\n", 836700e2052c6814b1b1d2714225d568c5c64bc49aeGreg Kroah-Hartman (unsigned long long)xhci->erst.erst_dma_addr); 8378e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp val_64 = xhci_read_64(xhci, &xhci->ir_set->erst_base); 8388e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp val_64 &= ERST_PTR_MASK; 8398e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp val_64 |= (xhci->erst.erst_dma_addr & (u64) ~ERST_PTR_MASK); 8408e595a5d30a5ee4bb745d4da6439d73ed7d91054Sarah Sharp xhci_write_64(xhci, val_64, &xhci->ir_set->erst_base); 8410ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 8420ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* Set the event ring dequeue address */ 84323e3be113f42790736319c049c78e5f9a4394c02Sarah Sharp xhci_set_hc_event_deq(xhci); 8440ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_dbg(xhci, "Wrote ERST address to ir_set 0.\n"); 8450ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp xhci_print_ir_set(xhci, xhci->ir_set, 0); 8460ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp 8470ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp /* 8480ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * XXX: Might need to set the Interrupter Moderation Register to 8490ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * something other than the default (~1ms minimum between interrupts). 8500ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp * See section 5.5.1.2. 8510ebbab37422315a5d0cb29792271085bafdf38c0Sarah Sharp */ 8523ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp init_completion(&xhci->addr_dev); 8533ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp for (i = 0; i < MAX_HC_SLOTS; ++i) 8543ffbba9511b4148cbe1f6b6238686adaeaca8febSarah Sharp xhci->devs[i] = 0; 85566d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp 856254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn if (scratchpad_alloc(xhci, flags)) 857254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn goto fail; 858254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 85966d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp return 0; 860254c80a3a0eb811489f7410c3291f01a60e8e42fJohn Youn 86166d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharpfail: 86266d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci_warn(xhci, "Couldn't initialize memory\n"); 86366d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp xhci_mem_cleanup(xhci); 86466d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp return -ENOMEM; 86566d4eadd8d067269ea8fead1a50fe87c2979a80dSarah Sharp} 866