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Diffstat (limited to 'package/rt2x00/src/rt2x00ring.h')
| -rw-r--r-- | package/rt2x00/src/rt2x00ring.h | 268 |
1 files changed, 0 insertions, 268 deletions
diff --git a/package/rt2x00/src/rt2x00ring.h b/package/rt2x00/src/rt2x00ring.h deleted file mode 100644 index 1a864d3..0000000 --- a/package/rt2x00/src/rt2x00ring.h +++ /dev/null @@ -1,268 +0,0 @@ -/* - Copyright (C) 2004 - 2007 rt2x00 SourceForge Project - <http://rt2x00.serialmonkey.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., - 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - */ - -/* - Module: rt2x00 - Abstract: rt2x00 ring datastructures and routines - */ - -#ifndef RT2X00RING_H -#define RT2X00RING_H - -/* - * data_desc - * Each data entry also contains a descriptor which is used by the - * device to determine what should be done with the packet and - * what the current status is. - * This structure is greatly simplified, but the descriptors - * are basically a list of little endian 32 bit values. - * Make the array by default 1 word big, this will allow us - * to use sizeof() correctly. - */ -struct data_desc { - __le32 word[1]; -}; - -/* - * rxdata_entry_desc - * Summary of information that has been read from the - * RX frame descriptor. - */ -struct rxdata_entry_desc { - int signal; - int rssi; - int ofdm; - int size; - int flags; -}; - -/* - * txdata_entry_desc - * Summary of information that should be written into the - * descriptor for sending a TX frame. - */ -struct txdata_entry_desc { - unsigned long flags; -#define ENTRY_TXDONE 1 -#define ENTRY_TXD_RTS_FRAME 2 -#define ENTRY_TXD_OFDM_RATE 3 -#define ENTRY_TXD_MORE_FRAG 4 -#define ENTRY_TXD_REQ_TIMESTAMP 5 -#define ENTRY_TXD_BURST 6 - -/* - * Queue ID. ID's 0-4 are data TX rings - */ - int queue; -#define QUEUE_MGMT 13 -#define QUEUE_RX 14 -#define QUEUE_OTHER 15 - - /* - * PLCP values. - */ - u16 length_high; - u16 length_low; - u16 signal; - u16 service; - - /* - * Timing information - */ - int aifs; - int ifs; - int cw_min; - int cw_max; -}; - -/* - * data_entry - * The data ring is a list of data entries. - * Each entry holds a reference to the descriptor - * and the data buffer. For TX rings the reference to the - * sk_buff of the packet being transmitted is also stored here. - */ -struct data_entry { - /* - * Status flags - */ - unsigned long flags; -#define ENTRY_OWNER_NIC 1 - - /* - * Ring we belong to. - */ - struct data_ring *ring; - - /* - * sk_buff for the packet which is being transmitted - * in this entry (Only used with TX related rings). - */ - struct sk_buff *skb; - - /* - * Store a ieee80211_tx_status structure in each - * ring entry, this will optimize the txdone - * handler. - */ - struct ieee80211_tx_status tx_status; - - /* - * private pointer specific to driver. - */ - void *priv; - - /* - * Data address for this entry. - */ - void *data_addr; - dma_addr_t data_dma; -}; - -/* - * data_ring - * Data rings are used by the device to send and receive packets. - * The data_addr is the base address of the data memory. - * To determine at which point in the ring we are, - * have to use the rt2x00_ring_index_*() functions. - */ -struct data_ring { - /* - * Pointer to main rt2x00dev structure where this - * ring belongs to. - */ - struct rt2x00_dev *rt2x00dev; - - /* - * Base address for the device specific data entries. - */ - struct data_entry *entry; - - /* - * TX queue statistic info. - */ - struct ieee80211_tx_queue_stats_data stats; - - /* - * TX Queue parameters. - */ - struct ieee80211_tx_queue_params tx_params; - - /* - * Base address for data ring. - */ - dma_addr_t data_dma; - void *data_addr; - - /* - * Index variables. - */ - u16 index; - u16 index_done; - - /* - * Size of packet and descriptor in bytes. - */ - u16 data_size; - u16 desc_size; -}; - -/* - * Handlers to determine the address of the current device specific - * data entry, where either index or index_done points to. - */ -static inline struct data_entry *rt2x00_get_data_entry(struct data_ring *ring) -{ - return &ring->entry[ring->index]; -} - -static inline struct data_entry *rt2x00_get_data_entry_done(struct data_ring - *ring) -{ - return &ring->entry[ring->index_done]; -} - -/* - * Total ring memory - */ -static inline int rt2x00_get_ring_size(struct data_ring *ring) -{ - return ring->stats.limit * (ring->desc_size + ring->data_size); -} - -/* - * Ring index manipulation functions. - */ -static inline void rt2x00_ring_index_inc(struct data_ring *ring) -{ - ring->index++; - if (ring->index >= ring->stats.limit) - ring->index = 0; - ring->stats.len++; -} - -static inline void rt2x00_ring_index_done_inc(struct data_ring *ring) -{ - ring->index_done++; - if (ring->index_done >= ring->stats.limit) - ring->index_done = 0; - ring->stats.len--; - ring->stats.count++; -} - -static inline void rt2x00_ring_index_clear(struct data_ring *ring) -{ - ring->index = 0; - ring->index_done = 0; - ring->stats.len = 0; - ring->stats.count = 0; -} - -static inline int rt2x00_ring_empty(struct data_ring *ring) -{ - return ring->stats.len == 0; -} - -static inline int rt2x00_ring_full(struct data_ring *ring) -{ - return ring->stats.len == ring->stats.limit; -} - -static inline int rt2x00_ring_free(struct data_ring *ring) -{ - return ring->stats.limit - ring->stats.len; -} - -/* - * TX/RX Descriptor access functions. - */ -static inline void rt2x00_desc_read(struct data_desc *desc, - const u8 word, u32 *value) -{ - *value = le32_to_cpu(desc->word[word]); -} - -static inline void rt2x00_desc_write(struct data_desc *desc, - const u8 word, const u32 value) -{ - desc->word[word] = cpu_to_le32(value); -} - -#endif /* RT2X00RING_H */ |