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-rw-r--r--carl9170fw/carlfw/src/hostif.c165
1 files changed, 0 insertions, 165 deletions
diff --git a/carl9170fw/carlfw/src/hostif.c b/carl9170fw/carlfw/src/hostif.c
deleted file mode 100644
index e445d5f..0000000
--- a/carl9170fw/carlfw/src/hostif.c
+++ /dev/null
@@ -1,165 +0,0 @@
-/*
- * carl9170 firmware - used by the ar9170 wireless device
- *
- * Host interface routines
- *
- * Copyright (c) 2000-2005 ZyDAS Technology Corporation
- * Copyright (c) 2007-2009 Atheros Communications, Inc.
- * Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
- * Copyright 2009-2011 Christian Lamparter <chunkeey@googlemail.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#include "carl9170.h"
-#include "hostif.h"
-#include "printf.h"
-#include "wl.h"
-
-static bool length_check(struct dma_desc *desc)
-{
- volatile struct carl9170_tx_superframe *super = __get_super(desc);
-
- if (unlikely(desc->totalLen < sizeof(struct carl9170_tx_superdesc)))
- return false;
-
- /*
- * check if the DMA is complete, or clipped.
- *
- * NB: The hardware aligns the descriptor length to
- * a 4 byte boundary. This makes the direct comparison
- * difficult, or unnecessary complex for a hot-path.
- */
- if (unlikely(super->s.len > desc->totalLen))
- return false;
-
- return true;
-}
-
-static void handle_download(void)
-{
- struct dma_desc *desc;
-
- /*
- * Under normal conditions, all completed descs should have
- * the AR9170_OWN_BITS_SE status flag set.
- * However there seems to be a undocumented case where the flag
- * is _SW ( handle_download_exception )
- */
-
- for_each_desc_not_bits(desc, &fw.pta.down_queue, AR9170_OWN_BITS_HW) {
- if (unlikely((length_check(desc) == false))) {
- /*
- * There is no easy way of telling what was lost.
- *
- * Therefore we just reclaim the data.
- * The driver has to have some sort frame
- * timeout mechanism.
- */
-
- wlan_tx_complete(__get_super(desc), false);
- dma_reclaim(&fw.pta.down_queue, desc);
- down_trigger();
- } else {
- wlan_tx(desc);
- }
- }
-
-#ifdef CONFIG_CARL9170FW_DEBUG_LED_HEARTBEAT
- xorl(AR9170_GPIO_REG_PORT_DATA, 2);
-#endif /* CONFIG_CARL9170FW_DEBUG_LED_HEARTBEAT */
-}
-
-static void handle_upload(void)
-{
- struct dma_desc *desc;
-
- for_each_desc_not_bits(desc, &fw.pta.up_queue, AR9170_OWN_BITS_HW) {
- /*
- * BIG FAT NOTE:
- *
- * DO NOT compare the descriptor addresses.
- */
- if (DESC_PAYLOAD(desc) == (void *) &dma_mem.reserved.rsp) {
- fw.usb.int_desc = desc;
- fw.usb.int_desc_available = 1;
- } else {
- dma_reclaim(&fw.wlan.rx_queue, desc);
- wlan_trigger(AR9170_DMA_TRIGGER_RXQ);
- }
- }
-
-#ifdef CONFIG_CARL9170FW_DEBUG_LED_HEARTBEAT
- xorl(AR9170_GPIO_REG_PORT_DATA, 2);
-#endif /* CONFIG_CARL9170FW_DEBUG_LED_HEARTBEAT */
-}
-
-static void handle_download_exception(void)
-{
- struct dma_desc *desc, *target;
-
- /* actually, the queue should be stopped by now? */
- usb_stop_down_queue();
-
- target = (void *)((get(AR9170_PTA_REG_DN_CURR_ADDRH) << 16) |
- get(AR9170_PTA_REG_DN_CURR_ADDRL));
-
- /*
- * Put "forgotten" packets from the head of the queue, back
- * to the current position
- */
- __while_desc_bits(desc, &fw.pta.down_queue, AR9170_OWN_BITS_HW) {
- if (desc == target)
- break;
-
- dma_reclaim(&fw.pta.down_queue,
- dma_unlink_head(&fw.pta.down_queue));
- }
-
- __for_each_desc_continue(desc, &fw.pta.down_queue) {
- if ((desc->status & AR9170_OWN_BITS) == AR9170_OWN_BITS_SW)
- dma_fix_downqueue(desc);
- }
-
-
- usb_start_down_queue();
-
- down_trigger();
-}
-
-/* handle interrupts from DMA chip */
-void handle_host_interface(void)
-{
- uint32_t pta_int;
-
- pta_int = get(AR9170_PTA_REG_INT_FLAG);
-
-#define HANDLER(intr, flag, func) \
- do { \
- if ((intr & flag) != 0) { \
- func(); \
- } \
- } while (0)
-
- HANDLER(pta_int, AR9170_PTA_INT_FLAG_DN, handle_download);
-
- HANDLER(pta_int, AR9170_PTA_INT_FLAG_UP, handle_upload);
-
- /* This is just guesswork and MAGIC */
- pta_int = get(AR9170_PTA_REG_DMA_STATUS);
- HANDLER(pta_int, 0x1, handle_download_exception);
-
-#undef HANDLER
-}