X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/00549f6de02bdb40a6470fe998edcbd3e048357e..d60ce1b40f304758df396ea08f5eae1a9a43d8b0:/target/linux/adm5120/files/drivers/usb/host/adm5120-mem.c diff --git a/target/linux/adm5120/files/drivers/usb/host/adm5120-mem.c b/target/linux/adm5120/files/drivers/usb/host/adm5120-mem.c index daf59bc43..79fff70e2 100644 --- a/target/linux/adm5120/files/drivers/usb/host/adm5120-mem.c +++ b/target/linux/adm5120/files/drivers/usb/host/adm5120-mem.c @@ -1,10 +1,16 @@ /* - * OHCI HCD (Host Controller Driver) for USB. + * ADM5120 HCD (Host Controller Driver) for USB * - * (C) Copyright 1999 Roman Weissgaerber - * (C) Copyright 2000-2002 David Brownell + * Copyright (C) 2007-2008 Gabor Juhos + * + * This file was derived from: drivers/usb/host/ohci-mem.c + * (C) Copyright 1999 Roman Weissgaerber + * (C) Copyright 2000-2002 David Brownell + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. * - * This file is licenced under the GPL. */ /*-------------------------------------------------------------------------*/ @@ -27,6 +33,7 @@ static void admhc_hcd_init(struct admhcd *ahcd) { ahcd->next_statechange = jiffies; spin_lock_init(&ahcd->lock); + INIT_LIST_HEAD(&ahcd->pending); } /*-------------------------------------------------------------------------*/ @@ -75,6 +82,19 @@ static void admhc_mem_cleanup(struct admhcd *ahcd) /*-------------------------------------------------------------------------*/ +/* ahcd "done list" processing needs this mapping */ +static inline struct td *dma_to_td(struct admhcd *ahcd, dma_addr_t td_dma) +{ + struct td *td; + + td_dma &= TD_MASK; + td = ahcd->td_hash[TD_HASH_FUNC(td_dma)]; + while (td && td->td_dma != td_dma) + td = td->td_hash; + + return td; +} + /* TDs ... */ static struct td *td_alloc(struct admhcd *ahcd, gfp_t mem_flags) { @@ -87,13 +107,29 @@ static struct td *td_alloc(struct admhcd *ahcd, gfp_t mem_flags) /* in case ahcd fetches it, make it look dead */ memset(td, 0, sizeof *td); + td->hwNextTD = cpu_to_hc32(ahcd, dma); td->td_dma = dma; + /* hashed in td_fill */ return td; } static void td_free(struct admhcd *ahcd, struct td *td) { + struct td **prev = &ahcd->td_hash[TD_HASH_FUNC(td->td_dma)]; + + while (*prev && *prev != td) + prev = &(*prev)->td_hash; + if (*prev) + *prev = td->td_hash; +#if 0 + /* TODO: remove */ + else if ((td->hwINFO & cpu_to_hc32(ahcd, TD_DONE)) != 0) + admhc_dbg(ahcd, "no hash for td %p\n", td); +#else + else if ((td->flags & TD_FLAG_DONE) != 0) + admhc_dbg(ahcd, "no hash for td %p\n", td); +#endif dma_pool_free(ahcd->td_cache, td, td->td_dma); } @@ -112,7 +148,8 @@ static struct ed *ed_alloc(struct admhcd *ahcd, gfp_t mem_flags) memset(ed, 0, sizeof(*ed)); ed->dma = dma; - INIT_LIST_HEAD(&ed->urb_pending); + INIT_LIST_HEAD(&ed->td_list); + INIT_LIST_HEAD(&ed->urb_list); return ed; } @@ -133,6 +170,7 @@ static void urb_priv_free(struct admhcd *ahcd, struct urb_priv *urb_priv) if (urb_priv->td[i]) td_free(ahcd, urb_priv->td[i]); + list_del(&urb_priv->pending); kfree(urb_priv); } @@ -140,23 +178,20 @@ static struct urb_priv *urb_priv_alloc(struct admhcd *ahcd, int num_tds, gfp_t mem_flags) { struct urb_priv *priv; - int i; /* allocate the private part of the URB */ priv = kzalloc(sizeof(*priv) + sizeof(struct td) * num_tds, mem_flags); if (!priv) goto err; - /* allocate the TDs */ - for (i = 0; i < num_tds; i++) { - priv->td[i] = td_alloc(ahcd, mem_flags); - if (priv->td[i] == NULL) + /* allocate the TDs (deferring hash chain updates) */ + for (priv->td_cnt = 0; priv->td_cnt < num_tds; priv->td_cnt++) { + priv->td[priv->td_cnt] = td_alloc(ahcd, mem_flags); + if (priv->td[priv->td_cnt] == NULL) goto err_free; - priv->td[i]->index = i; } INIT_LIST_HEAD(&priv->pending); - priv->td_cnt = num_tds; return priv;