1 /* 2 * 3 * BRIEF MODULE DESCRIPTION 4 * Au1000 IrDA driver. 5 * 6 * Copyright 2001 MontaVista Software Inc. 7 * Author: MontaVista Software, Inc. 8 * ppopov@mvista.com or source@mvista.com 9 * 10 * This program is free software; you can redistribute it and/or modify it 11 * under the terms of the GNU General Public License as published by the 12 * Free Software Foundation; either version 2 of the License, or (at your 13 * option) any later version. 14 * 15 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED 16 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 17 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 18 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 21 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 22 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * You should have received a copy of the GNU General Public License along 27 * with this program; if not, write to the Free Software Foundation, Inc., 28 * 675 Mass Ave, Cambridge, MA 02139, USA. 29 */ 30 31 #ifndef AU1000_IRCC_H 32 #define AU1000_IRCC_H 33 34 #include <linux/time.h> 35 36 #include <linux/spinlock.h> 37 #include <linux/pm.h> 38 #include <asm/io.h> 39 40 #define NUM_IR_IFF 1 41 #define NUM_IR_DESC 64 42 #define RING_SIZE_4 0x0 43 #define RING_SIZE_16 0x3 44 #define RING_SIZE_64 0xF 45 #define MAX_NUM_IR_DESC 64 46 #define MAX_BUF_SIZE 2048 47 48 #define BPS_115200 0 49 #define BPS_57600 1 50 #define BPS_38400 2 51 #define BPS_19200 5 52 #define BPS_9600 11 53 #define BPS_2400 47 54 55 /* Ring descriptor flags */ 56 #define AU_OWN (1<<7) /* tx,rx */ 57 58 #define IR_DIS_CRC (1<<6) /* tx */ 59 #define IR_BAD_CRC (1<<5) /* tx */ 60 #define IR_NEED_PULSE (1<<4) /* tx */ 61 #define IR_FORCE_UNDER (1<<3) /* tx */ 62 #define IR_DISABLE_TX (1<<2) /* tx */ 63 #define IR_HW_UNDER (1<<0) /* tx */ 64 #define IR_TX_ERROR (IR_DIS_CRC|IR_BAD_CRC|IR_HW_UNDER) 65 66 #define IR_PHY_ERROR (1<<6) /* rx */ 67 #define IR_CRC_ERROR (1<<5) /* rx */ 68 #define IR_MAX_LEN (1<<4) /* rx */ 69 #define IR_FIFO_OVER (1<<3) /* rx */ 70 #define IR_SIR_ERROR (1<<2) /* rx */ 71 #define IR_RX_ERROR (IR_PHY_ERROR|IR_CRC_ERROR| \ 72 IR_MAX_LEN|IR_FIFO_OVER|IR_SIR_ERROR) 73 74 typedef struct db_dest { 75 struct db_dest *pnext; 76 volatile u32 *vaddr; 77 dma_addr_t dma_addr; 78 } db_dest_t; 79 80 81 typedef struct ring_desc { 82 u8 count_0; /* 7:0 */ 83 u8 count_1; /* 12:8 */ 84 u8 reserved; 85 u8 flags; 86 u8 addr_0; /* 7:0 */ 87 u8 addr_1; /* 15:8 */ 88 u8 addr_2; /* 23:16 */ 89 u8 addr_3; /* 31:24 */ 90 } ring_dest_t; 91 92 93 /* Private data for each instance */ 94 struct au1k_private { 95 96 db_dest_t *pDBfree; 97 db_dest_t db[2*NUM_IR_DESC]; 98 volatile ring_dest_t *rx_ring[NUM_IR_DESC]; 99 volatile ring_dest_t *tx_ring[NUM_IR_DESC]; 100 db_dest_t *rx_db_inuse[NUM_IR_DESC]; 101 db_dest_t *tx_db_inuse[NUM_IR_DESC]; 102 u32 rx_head; 103 u32 tx_head; 104 u32 tx_tail; 105 u32 tx_full; 106 107 iobuff_t rx_buff; 108 109 struct net_device *netdev; 110 struct net_device_stats stats; 111 112 struct timeval stamp; 113 struct timeval now; 114 struct qos_info qos; 115 struct irlap_cb *irlap; 116 117 u8 open; 118 u32 flags; /* Interface flags */ 119 u32 speed; 120 u32 newspeed; 121 122 u32 intr_work_done; /* number of Rx and Tx pkts processed in the isr */ 123 struct timer_list timer; 124 125 spinlock_t lock; /* For serializing operations */ 126 struct pm_dev *dev; 127 }; 128 #endif /* AU1000_IRCC_H */ 129