diff options
Diffstat (limited to 'target/linux/adm5120/files-3.14/drivers/usb/host/adm5120-mem.c')
| -rw-r--r-- | target/linux/adm5120/files-3.14/drivers/usb/host/adm5120-mem.c | 202 |
1 files changed, 0 insertions, 202 deletions
diff --git a/target/linux/adm5120/files-3.14/drivers/usb/host/adm5120-mem.c b/target/linux/adm5120/files-3.14/drivers/usb/host/adm5120-mem.c deleted file mode 100644 index 79fff70e2d..0000000000 --- a/target/linux/adm5120/files-3.14/drivers/usb/host/adm5120-mem.c +++ /dev/null @@ -1,202 +0,0 @@ -/* - * ADM5120 HCD (Host Controller Driver) for USB - * - * Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org> - * - * This file was derived from: drivers/usb/host/ohci-mem.c - * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at> - * (C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net> - * - * 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. - * - */ - -/*-------------------------------------------------------------------------*/ - -/* - * OHCI deals with three types of memory: - * - data used only by the HCD ... kmalloc is fine - * - async and periodic schedules, shared by HC and HCD ... these - * need to use dma_pool or dma_alloc_coherent - * - driver buffers, read/written by HC ... the hcd glue or the - * device driver provides us with dma addresses - * - * There's also "register" data, which is memory mapped. - * No memory seen by this driver (or any HCD) may be paged out. - */ - -/*-------------------------------------------------------------------------*/ - -static void admhc_hcd_init(struct admhcd *ahcd) -{ - ahcd->next_statechange = jiffies; - spin_lock_init(&ahcd->lock); - INIT_LIST_HEAD(&ahcd->pending); -} - -/*-------------------------------------------------------------------------*/ - -static int admhc_mem_init(struct admhcd *ahcd) -{ - ahcd->td_cache = dma_pool_create("admhc_td", - admhcd_to_hcd(ahcd)->self.controller, - sizeof(struct td), - TD_ALIGN, /* byte alignment */ - 0 /* no page-crossing issues */ - ); - if (!ahcd->td_cache) - goto err; - - ahcd->ed_cache = dma_pool_create("admhc_ed", - admhcd_to_hcd(ahcd)->self.controller, - sizeof(struct ed), - ED_ALIGN, /* byte alignment */ - 0 /* no page-crossing issues */ - ); - if (!ahcd->ed_cache) - goto err_td_cache; - - return 0; - -err_td_cache: - dma_pool_destroy(ahcd->td_cache); - ahcd->td_cache = NULL; -err: - return -ENOMEM; -} - -static void admhc_mem_cleanup(struct admhcd *ahcd) -{ - if (ahcd->td_cache) { - dma_pool_destroy(ahcd->td_cache); - ahcd->td_cache = NULL; - } - - if (ahcd->ed_cache) { - dma_pool_destroy(ahcd->ed_cache); - ahcd->ed_cache = NULL; - } -} - -/*-------------------------------------------------------------------------*/ - -/* 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) -{ - dma_addr_t dma; - struct td *td; - - td = dma_pool_alloc(ahcd->td_cache, mem_flags, &dma); - if (!td) - return NULL; - - /* 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); -} - -/*-------------------------------------------------------------------------*/ - -/* EDs ... */ -static struct ed *ed_alloc(struct admhcd *ahcd, gfp_t mem_flags) -{ - dma_addr_t dma; - struct ed *ed; - - ed = dma_pool_alloc(ahcd->ed_cache, mem_flags, &dma); - if (!ed) - return NULL; - - memset(ed, 0, sizeof(*ed)); - ed->dma = dma; - - INIT_LIST_HEAD(&ed->td_list); - INIT_LIST_HEAD(&ed->urb_list); - - return ed; -} - -static void ed_free(struct admhcd *ahcd, struct ed *ed) -{ - dma_pool_free(ahcd->ed_cache, ed, ed->dma); -} - -/*-------------------------------------------------------------------------*/ - -/* URB priv ... */ -static void urb_priv_free(struct admhcd *ahcd, struct urb_priv *urb_priv) -{ - int i; - - for (i = 0; i < urb_priv->td_cnt; i++) - if (urb_priv->td[i]) - td_free(ahcd, urb_priv->td[i]); - - list_del(&urb_priv->pending); - kfree(urb_priv); -} - -static struct urb_priv *urb_priv_alloc(struct admhcd *ahcd, int num_tds, - gfp_t mem_flags) -{ - struct urb_priv *priv; - - /* 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 (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; - } - - INIT_LIST_HEAD(&priv->pending); - - return priv; - -err_free: - urb_priv_free(ahcd, priv); -err: - return NULL; -} |