| /* |
| * sja1000.h - Philips SJA1000 network device driver |
| * |
| * Copyright (c) 2003 Matthias Brukner, Trajet Gmbh, Rebenring 33, |
| * 38106 Braunschweig, GERMANY |
| * |
| * Copyright (c) 2002-2007 Volkswagen Group Electronic Research |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. Neither the name of Volkswagen nor the names of its contributors |
| * may be used to endorse or promote products derived from this software |
| * without specific prior written permission. |
| * |
| * Alternatively, provided that this notice is retained in full, this |
| * software may be distributed under the terms of the GNU General |
| * Public License ("GPL") version 2, in which case the provisions of the |
| * GPL apply INSTEAD OF those given above. |
| * |
| * The provided data structures and external interfaces from this code |
| * are not restricted to be used by modules with a GPL compatible license. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH |
| * DAMAGE. |
| * |
| */ |
| |
| #ifndef SJA1000_DEV_H |
| #define SJA1000_DEV_H |
| |
| #include <linux/irqreturn.h> |
| #include <linux/can/dev.h> |
| #include <linux/can/platform/sja1000.h> |
| |
| #define SJA1000_ECHO_SKB_MAX 1 /* the SJA1000 has one TX buffer object */ |
| |
| #define SJA1000_MAX_IRQ 20 /* max. number of interrupts handled in ISR */ |
| |
| /* SJA1000 registers - manual section 6.4 (Pelican Mode) */ |
| #define REG_MOD 0x00 |
| #define REG_CMR 0x01 |
| #define SJA1000_REG_SR 0x02 |
| #define REG_IR 0x03 |
| #define REG_IER 0x04 |
| #define REG_ALC 0x0B |
| #define REG_ECC 0x0C |
| #define REG_EWL 0x0D |
| #define REG_RXERR 0x0E |
| #define REG_TXERR 0x0F |
| #define REG_ACCC0 0x10 |
| #define REG_ACCC1 0x11 |
| #define REG_ACCC2 0x12 |
| #define REG_ACCC3 0x13 |
| #define REG_ACCM0 0x14 |
| #define REG_ACCM1 0x15 |
| #define REG_ACCM2 0x16 |
| #define REG_ACCM3 0x17 |
| #define REG_RMC 0x1D |
| #define REG_RBSA 0x1E |
| |
| /* Common registers - manual section 6.5 */ |
| #define REG_BTR0 0x06 |
| #define REG_BTR1 0x07 |
| #define REG_OCR 0x08 |
| #define REG_CDR 0x1F |
| |
| #define REG_FI 0x10 |
| #define SFF_BUF 0x13 |
| #define EFF_BUF 0x15 |
| |
| #define FI_FF 0x80 |
| #define FI_RTR 0x40 |
| |
| #define REG_ID1 0x11 |
| #define REG_ID2 0x12 |
| #define REG_ID3 0x13 |
| #define REG_ID4 0x14 |
| |
| #define CAN_RAM 0x20 |
| |
| /* mode register */ |
| #define MOD_RM 0x01 |
| #define MOD_LOM 0x02 |
| #define MOD_STM 0x04 |
| #define MOD_AFM 0x08 |
| #define MOD_SM 0x10 |
| |
| /* commands */ |
| #define CMD_SRR 0x10 |
| #define CMD_CDO 0x08 |
| #define CMD_RRB 0x04 |
| #define CMD_AT 0x02 |
| #define CMD_TR 0x01 |
| |
| /* interrupt sources */ |
| #define IRQ_BEI 0x80 |
| #define IRQ_ALI 0x40 |
| #define IRQ_EPI 0x20 |
| #define IRQ_WUI 0x10 |
| #define IRQ_DOI 0x08 |
| #define IRQ_EI 0x04 |
| #define IRQ_TI 0x02 |
| #define IRQ_RI 0x01 |
| #define IRQ_ALL 0xFF |
| #define IRQ_OFF 0x00 |
| |
| /* status register content */ |
| #define SR_BS 0x80 |
| #define SR_ES 0x40 |
| #define SR_TS 0x20 |
| #define SR_RS 0x10 |
| #define SR_TCS 0x08 |
| #define SR_TBS 0x04 |
| #define SR_DOS 0x02 |
| #define SR_RBS 0x01 |
| |
| #define SR_CRIT (SR_BS|SR_ES) |
| |
| /* ECC register */ |
| #define ECC_SEG 0x1F |
| #define ECC_DIR 0x20 |
| #define ECC_ERR 6 |
| #define ECC_BIT 0x00 |
| #define ECC_FORM 0x40 |
| #define ECC_STUFF 0x80 |
| #define ECC_MASK 0xc0 |
| |
| /* |
| * Flags for sja1000priv.flags |
| */ |
| #define SJA1000_CUSTOM_IRQ_HANDLER 0x1 |
| |
| /* |
| * SJA1000 private data structure |
| */ |
| struct sja1000_priv { |
| struct can_priv can; /* must be the first member */ |
| struct sk_buff *echo_skb; |
| |
| /* the lower-layer is responsible for appropriate locking */ |
| u8 (*read_reg) (const struct sja1000_priv *priv, int reg); |
| void (*write_reg) (const struct sja1000_priv *priv, int reg, u8 val); |
| void (*pre_irq) (const struct sja1000_priv *priv); |
| void (*post_irq) (const struct sja1000_priv *priv); |
| |
| void *priv; /* for board-specific data */ |
| struct net_device *dev; |
| |
| void __iomem *reg_base; /* ioremap'ed address to registers */ |
| unsigned long irq_flags; /* for request_irq() */ |
| spinlock_t cmdreg_lock; /* lock for concurrent cmd register writes */ |
| |
| u16 flags; /* custom mode flags */ |
| u8 ocr; /* output control register */ |
| u8 cdr; /* clock divider register */ |
| }; |
| |
| struct net_device *alloc_sja1000dev(int sizeof_priv); |
| void free_sja1000dev(struct net_device *dev); |
| int register_sja1000dev(struct net_device *dev); |
| void unregister_sja1000dev(struct net_device *dev); |
| |
| irqreturn_t sja1000_interrupt(int irq, void *dev_id); |
| |
| #endif /* SJA1000_DEV_H */ |
