diff options
Diffstat (limited to 'drivers/net/can')
| -rw-r--r-- | drivers/net/can/Kconfig | 8 | ||||
| -rw-r--r-- | drivers/net/can/at91_can.c | 366 | ||||
| -rw-r--r-- | drivers/net/can/bfin_can.c | 137 | ||||
| -rw-r--r-- | drivers/net/can/c_can/c_can.c | 1 | ||||
| -rw-r--r-- | drivers/net/can/c_can/c_can_platform.c | 1 | ||||
| -rw-r--r-- | drivers/net/can/dev.c | 2 | ||||
| -rw-r--r-- | drivers/net/can/janz-ican3.c | 1 | ||||
| -rw-r--r-- | drivers/net/can/sja1000/sja1000.h | 1 | ||||
| -rw-r--r-- | drivers/net/can/sja1000/sja1000_of_platform.c | 1 | ||||
| -rw-r--r-- | drivers/net/can/slcan.c | 63 | ||||
| -rw-r--r-- | drivers/net/can/softing/softing_fw.c | 1 | ||||
| -rw-r--r-- | drivers/net/can/softing/softing_main.c | 2 |
12 files changed, 341 insertions, 243 deletions
diff --git a/drivers/net/can/Kconfig b/drivers/net/can/Kconfig index 754df5ef1729..f6c98fb4a517 100644 --- a/drivers/net/can/Kconfig +++ b/drivers/net/can/Kconfig @@ -4,7 +4,6 @@ menu "CAN Device Drivers" config CAN_VCAN tristate "Virtual Local CAN Interface (vcan)" depends on CAN - default N ---help--- Similar to the network loopback devices, vcan offers a virtual local CAN interface. @@ -15,7 +14,6 @@ config CAN_VCAN config CAN_SLCAN tristate "Serial / USB serial CAN Adaptors (slcan)" depends on CAN - default N ---help--- CAN driver for several 'low cost' CAN interfaces that are attached via serial lines or via USB-to-serial adapters using the LAWICEL @@ -58,9 +56,10 @@ config CAN_CALC_BITTIMING config CAN_AT91 tristate "Atmel AT91 onchip CAN controller" - depends on CAN_DEV && ARCH_AT91SAM9263 + depends on CAN_DEV && (ARCH_AT91SAM9263 || ARCH_AT91SAM9X5) ---help--- - This is a driver for the SoC CAN controller in Atmel's AT91SAM9263. + This is a driver for the SoC CAN controller in Atmel's AT91SAM9263 + and AT91SAM9X5 processors. config CAN_TI_HECC depends on CAN_DEV && ARCH_OMAP3 @@ -124,7 +123,6 @@ source "drivers/net/can/softing/Kconfig" config CAN_DEBUG_DEVICES bool "CAN devices debugging messages" depends on CAN - default N ---help--- Say Y here if you want the CAN device drivers to produce a bunch of debug messages to the system log. Select this if you are having diff --git a/drivers/net/can/at91_can.c b/drivers/net/can/at91_can.c index 74efb5a2ad41..121ede663e20 100644 --- a/drivers/net/can/at91_can.c +++ b/drivers/net/can/at91_can.c @@ -41,32 +41,7 @@ #include <mach/board.h> -#define AT91_NAPI_WEIGHT 11 - -/* - * RX/TX Mailbox split - * don't dare to touch - */ -#define AT91_MB_RX_NUM 11 -#define AT91_MB_TX_SHIFT 2 - -#define AT91_MB_RX_FIRST 1 -#define AT91_MB_RX_LAST (AT91_MB_RX_FIRST + AT91_MB_RX_NUM - 1) - -#define AT91_MB_RX_MASK(i) ((1 << (i)) - 1) -#define AT91_MB_RX_SPLIT 8 -#define AT91_MB_RX_LOW_LAST (AT91_MB_RX_SPLIT - 1) -#define AT91_MB_RX_LOW_MASK (AT91_MB_RX_MASK(AT91_MB_RX_SPLIT) & \ - ~AT91_MB_RX_MASK(AT91_MB_RX_FIRST)) - -#define AT91_MB_TX_NUM (1 << AT91_MB_TX_SHIFT) -#define AT91_MB_TX_FIRST (AT91_MB_RX_LAST + 1) -#define AT91_MB_TX_LAST (AT91_MB_TX_FIRST + AT91_MB_TX_NUM - 1) - -#define AT91_NEXT_PRIO_SHIFT (AT91_MB_TX_SHIFT) -#define AT91_NEXT_PRIO_MASK (0xf << AT91_MB_TX_SHIFT) -#define AT91_NEXT_MB_MASK (AT91_MB_TX_NUM - 1) -#define AT91_NEXT_MASK ((AT91_MB_TX_NUM - 1) | AT91_NEXT_PRIO_MASK) +#define AT91_MB_MASK(i) ((1 << (i)) - 1) /* Common registers */ enum at91_reg { @@ -128,12 +103,6 @@ enum at91_mb_mode { }; /* Interrupt mask bits */ -#define AT91_IRQ_MB_RX ((1 << (AT91_MB_RX_LAST + 1)) \ - - (1 << AT91_MB_RX_FIRST)) -#define AT91_IRQ_MB_TX ((1 << (AT91_MB_TX_LAST + 1)) \ - - (1 << AT91_MB_TX_FIRST)) -#define AT91_IRQ_MB_ALL (AT91_IRQ_MB_RX | AT91_IRQ_MB_TX) - #define AT91_IRQ_ERRA (1 << 16) #define AT91_IRQ_WARN (1 << 17) #define AT91_IRQ_ERRP (1 << 18) @@ -156,22 +125,51 @@ enum at91_mb_mode { #define AT91_IRQ_ALL (0x1fffffff) +enum at91_devtype { + AT91_DEVTYPE_SAM9263, + AT91_DEVTYPE_SAM9X5, +}; + +struct at91_devtype_data { + unsigned int rx_first; + unsigned int rx_split; + unsigned int rx_last; + unsigned int tx_shift; + enum at91_devtype type; +}; + struct at91_priv { - struct can_priv can; /* must be the first member! */ - struct net_device *dev; - struct napi_struct napi; + struct can_priv can; /* must be the first member! */ + struct net_device *dev; + struct napi_struct napi; - void __iomem *reg_base; + void __iomem *reg_base; - u32 reg_sr; - unsigned int tx_next; - unsigned int tx_echo; - unsigned int rx_next; + u32 reg_sr; + unsigned int tx_next; + unsigned int tx_echo; + unsigned int rx_next; + struct at91_devtype_data devtype_data; - struct clk *clk; - struct at91_can_data *pdata; + struct clk *clk; + struct at91_can_data *pdata; - canid_t mb0_id; + canid_t mb0_id; +}; + +static const struct at91_devtype_data at91_devtype_data[] __devinitconst = { + [AT91_DEVTYPE_SAM9263] = { + .rx_first = 1, + .rx_split = 8, + .rx_last = 11, + .tx_shift = 2, + }, + [AT91_DEVTYPE_SAM9X5] = { + .rx_first = 0, + .rx_split = 4, + .rx_last = 5, + .tx_shift = 1, + }, }; static struct can_bittiming_const at91_bittiming_const = { @@ -186,19 +184,111 @@ static struct can_bittiming_const at91_bittiming_const = { .brp_inc = 1, }; -static inline int get_tx_next_mb(const struct at91_priv *priv) +#define AT91_IS(_model) \ +static inline int at91_is_sam##_model(const struct at91_priv *priv) \ +{ \ + return priv->devtype_data.type == AT91_DEVTYPE_SAM##_model; \ +} + +AT91_IS(9263); +AT91_IS(9X5); + +static inline unsigned int get_mb_rx_first(const struct at91_priv *priv) +{ + return priv->devtype_data.rx_first; +} + +static inline unsigned int get_mb_rx_last(const struct at91_priv *priv) +{ + return priv->devtype_data.rx_last; +} + +static inline unsigned int get_mb_rx_split(const struct at91_priv *priv) +{ + return priv->devtype_data.rx_split; +} + +static inline unsigned int get_mb_rx_num(const struct at91_priv *priv) +{ + return get_mb_rx_last(priv) - get_mb_rx_first(priv) + 1; +} + +static inline unsigned int get_mb_rx_low_last(const struct at91_priv *priv) +{ + return get_mb_rx_split(priv) - 1; +} + +static inline unsigned int get_mb_rx_low_mask(const struct at91_priv *priv) +{ + return AT91_MB_MASK(get_mb_rx_split(priv)) & + ~AT91_MB_MASK(get_mb_rx_first(priv)); +} + +static inline unsigned int get_mb_tx_shift(const struct at91_priv *priv) +{ + return priv->devtype_data.tx_shift; +} + +static inline unsigned int get_mb_tx_num(const struct at91_priv *priv) +{ + return 1 << get_mb_tx_shift(priv); +} + +static inline unsigned int get_mb_tx_first(const struct at91_priv *priv) +{ + return get_mb_rx_last(priv) + 1; +} + +static inline unsigned int get_mb_tx_last(const struct at91_priv *priv) +{ + return get_mb_tx_first(priv) + get_mb_tx_num(priv) - 1; +} + +static inline unsigned int get_next_prio_shift(const struct at91_priv *priv) +{ + return get_mb_tx_shift(priv); +} + +static inline unsigned int get_next_prio_mask(const struct at91_priv *priv) +{ + return 0xf << get_mb_tx_shift(priv); +} + +static inline unsigned int get_next_mb_mask(const struct at91_priv *priv) +{ + return AT91_MB_MASK(get_mb_tx_shift(priv)); +} + +static inline unsigned int get_next_mask(const struct at91_priv *priv) +{ + return get_next_mb_mask(priv) | get_next_prio_mask(priv); +} + +static inline unsigned int get_irq_mb_rx(const struct at91_priv *priv) { - return (priv->tx_next & AT91_NEXT_MB_MASK) + AT91_MB_TX_FIRST; + return AT91_MB_MASK(get_mb_rx_last(priv) + 1) & + ~AT91_MB_MASK(get_mb_rx_first(priv)); } -static inline int get_tx_next_prio(const struct at91_priv *priv) +static inline unsigned int get_irq_mb_tx(const struct at91_priv *priv) { - return (priv->tx_next >> AT91_NEXT_PRIO_SHIFT) & 0xf; + return AT91_MB_MASK(get_mb_tx_last(priv) + 1) & + ~AT91_MB_MASK(get_mb_tx_first(priv)); } -static inline int get_tx_echo_mb(const struct at91_priv *priv) +static inline unsigned int get_tx_next_mb(const struct at91_priv *priv) { - return (priv->tx_echo & AT91_NEXT_MB_MASK) + AT91_MB_TX_FIRST; + return (priv->tx_next & get_next_mb_mask(priv)) + get_mb_tx_first(priv); +} + +static inline unsigned int get_tx_next_prio(const struct at91_priv *priv) +{ + return (priv->tx_next >> get_next_prio_shift(priv)) & 0xf; +} + +static inline unsigned int get_tx_echo_mb(const struct at91_priv *priv) +{ + return (priv->tx_echo & get_next_mb_mask(priv)) + get_mb_tx_first(priv); } static inline u32 at91_read(const struct at91_priv *priv, enum at91_reg reg) @@ -259,29 +349,29 @@ static void at91_setup_mailboxes(struct net_device *dev) * overflow. */ reg_mid = at91_can_id_to_reg_mid(priv->mb0_id); - for (i = 0; i < AT91_MB_RX_FIRST; i++) { + for (i = 0; i < get_mb_rx_first(priv); i++) { set_mb_mode(priv, i, AT91_MB_MODE_DISABLED); at91_write(priv, AT91_MID(i), reg_mid); at91_write(priv, AT91_MCR(i), 0x0); /* clear dlc */ } - for (i = AT91_MB_RX_FIRST; i < AT91_MB_RX_LAST; i++) + for (i = get_mb_rx_first(priv); i < get_mb_rx_last(priv); i++) set_mb_mode(priv, i, AT91_MB_MODE_RX); - set_mb_mode(priv, AT91_MB_RX_LAST, AT91_MB_MODE_RX_OVRWR); + set_mb_mode(priv, get_mb_rx_last(priv), AT91_MB_MODE_RX_OVRWR); /* reset acceptance mask and id register */ - for (i = AT91_MB_RX_FIRST; i <= AT91_MB_RX_LAST; i++) { - at91_write(priv, AT91_MAM(i), 0x0 ); + for (i = get_mb_rx_first(priv); i <= get_mb_rx_last(priv); i++) { + at91_write(priv, AT91_MAM(i), 0x0); at91_write(priv, AT91_MID(i), AT91_MID_MIDE); } /* The last 4 mailboxes are used for transmitting. */ - for (i = AT91_MB_TX_FIRST; i <= AT91_MB_TX_LAST; i++) + for (i = get_mb_tx_first(priv); i <= get_mb_tx_last(priv); i++) set_mb_mode_prio(priv, i, AT91_MB_MODE_TX, 0); /* Reset tx and rx helper pointers */ priv->tx_next = priv->tx_echo = 0; - priv->rx_next = AT91_MB_RX_FIRST; + priv->rx_next = get_mb_rx_first(priv); } static int at91_set_bittiming(struct net_device *dev) @@ -336,7 +426,7 @@ static void at91_chip_start(struct net_device *dev) priv->can.state = CAN_STATE_ERROR_ACTIVE; /* Enable interrupts */ - reg_ier = AT91_IRQ_MB_RX | AT91_IRQ_ERRP | AT91_IRQ_ERR_FRAME; + reg_ier = get_irq_mb_rx(priv) | AT91_IRQ_ERRP | AT91_IRQ_ERR_FRAME; at91_write(priv, AT91_IDR, AT91_IRQ_ALL); at91_write(priv, AT91_IER, reg_ier); } @@ -375,8 +465,8 @@ static void at91_chip_stop(struct net_device *dev, enum can_state state) * mailbox, but without the offset AT91_MB_TX_FIRST. The lower bits * encode the mailbox number, the upper 4 bits the mailbox priority: * - * priv->tx_next = (prio << AT91_NEXT_PRIO_SHIFT) || - * (mb - AT91_MB_TX_FIRST); + * priv->tx_next = (prio << get_next_prio_shift(priv)) | + * (mb - get_mb_tx_first(priv)); * */ static netdev_tx_t at91_start_xmit(struct sk_buff *skb, struct net_device *dev) @@ -417,7 +507,7 @@ static netdev_tx_t at91_start_xmit(struct sk_buff *skb, struct net_device *dev) stats->tx_bytes += cf->can_dlc; /* _NOTE_: subtract AT91_MB_TX_FIRST offset from mb! */ - can_put_echo_skb(skb, dev, mb - AT91_MB_TX_FIRST); + can_put_echo_skb(skb, dev, mb - get_mb_tx_first(priv)); /* * we have to stop the queue and deliver all messages in case @@ -430,7 +520,7 @@ static netdev_tx_t at91_start_xmit(struct sk_buff *skb, struct net_device *dev) priv->tx_next++; if (!(at91_read(priv, AT91_MSR(get_tx_next_mb(priv))) & AT91_MSR_MRDY) || - (priv->tx_next & AT91_NEXT_MASK) == 0) + (priv->tx_next & get_next_mask(priv)) == 0) netif_stop_queue(dev); /* Enable interrupt for this mailbox */ @@ -447,7 +537,7 @@ static netdev_tx_t at91_start_xmit(struct sk_buff *skb, struct net_device *dev) */ static inline void at91_activate_rx_low(const struct at91_priv *priv) { - u32 mask = AT91_MB_RX_LOW_MASK; + u32 mask = get_mb_rx_low_mask(priv); at91_write(priv, AT91_TCR, mask); } @@ -513,17 +603,19 @@ static void at91_read_mb(struct net_device *dev, unsigned int mb, cf->can_id = (reg_mid >> 18) & CAN_SFF_MASK; reg_msr = at91_read(priv, AT91_MSR(mb)); - if (reg_msr & AT91_MSR_MRTR) - cf->can_id |= CAN_RTR_FLAG; cf->can_dlc = get_can_dlc((reg_msr >> 16) & 0xf); - *(u32 *)(cf->data + 0) = at91_read(priv, AT91_MDL(mb)); - *(u32 *)(cf->data + 4) = at91_read(priv, AT91_MDH(mb)); + if (reg_msr & AT91_MSR_MRTR) + cf->can_id |= CAN_RTR_FLAG; + else { + *(u32 *)(cf->data + 0) = at91_read(priv, AT91_MDL(mb)); + *(u32 *)(cf->data + 4) = at91_read(priv, AT91_MDH(mb)); + } /* allow RX of extended frames */ at91_write(priv, AT91_MID(mb), AT91_MID_MIDE); - if (unlikely(mb == AT91_MB_RX_LAST && reg_msr & AT91_MSR_MMI)) + if (unlikely(mb == get_mb_rx_last(priv) && reg_msr & AT91_MSR_MMI)) at91_rx_overflow_err(dev); } @@ -561,8 +653,9 @@ static void at91_read_msg(struct net_device *dev, unsigned int mb) * * Theory of Operation: * - * 11 of the 16 mailboxes on the chip are reserved for RX. we split - * them into 2 groups. The lower group holds 7 and upper 4 mailboxes. + * About 3/4 of the mailboxes (get_mb_rx_first()...get_mb_rx_last()) + * on the chip are reserved for RX. We split them into 2 groups. The + * lower group ranges from get_mb_rx_first() to get_mb_rx_low_last(). * * Like it or not, but the chip always saves a received CAN message * into the first free mailbox it finds (starting with the @@ -610,23 +703,23 @@ static int at91_poll_rx(struct net_device *dev, int quota) unsigned int mb; int received = 0; - if (priv->rx_next > AT91_MB_RX_LOW_LAST && - reg_sr & AT91_MB_RX_LOW_MASK) + if (priv->rx_next > get_mb_rx_low_last(priv) && + reg_sr & get_mb_rx_low_mask(priv)) netdev_info(dev, "order of incoming frames cannot be guaranteed\n"); again: - for (mb = find_next_bit(addr, AT91_MB_RX_LAST + 1, priv->rx_next); - mb < AT91_MB_RX_LAST + 1 && quota > 0; + for (mb = find_next_bit(addr, get_mb_tx_first(priv), priv->rx_next); + mb < get_mb_tx_first(priv) && quota > 0; reg_sr = at91_read(priv, AT91_SR), - mb = find_next_bit(addr, AT91_MB_RX_LAST + 1, ++priv->rx_next)) { + mb = find_next_bit(addr, get_mb_tx_first(priv), ++priv->rx_next)) { at91_read_msg(dev, mb); /* reactivate mailboxes */ - if (mb == AT91_MB_RX_LOW_LAST) + if (mb == get_mb_rx_low_last(priv)) /* all lower mailboxed, if just finished it */ at91_activate_rx_low(priv); - else if (mb > AT91_MB_RX_LOW_LAST) + else if (mb > get_mb_rx_low_last(priv)) /* only the mailbox we read */ at91_activate_rx_mb(priv, mb); @@ -635,9 +728,9 @@ static int at91_poll_rx(struct net_device *dev, int quota) } /* upper group completed, look again in lower */ - if (priv->rx_next > AT91_MB_RX_LOW_LAST && - quota > 0 && mb > AT91_MB_RX_LAST) { - priv->rx_next = AT91_MB_RX_FIRST; + if (priv->rx_next > get_mb_rx_low_last(priv) && + quota > 0 && mb > get_mb_rx_last(priv)) { + priv->rx_next = get_mb_rx_first(priv); goto again; } @@ -720,7 +813,7 @@ static int at91_poll(struct napi_struct *napi, int quota) u32 reg_sr = at91_read(priv, AT91_SR); int work_done = 0; - if (reg_sr & AT91_IRQ_MB_RX) + if (reg_sr & get_irq_mb_rx(priv)) work_done += at91_poll_rx(dev, quota - work_done); /* @@ -734,7 +827,7 @@ static int at91_poll(struct napi_struct *napi, int quota) if (work_done < quota) { /* enable IRQs for frame errors and all mailboxes >= rx_next */ u32 reg_ier = AT91_IRQ_ERR_FRAME; - reg_ier |= AT91_IRQ_MB_RX & ~AT91_MB_RX_MASK(priv->rx_next); + reg_ier |= get_irq_mb_rx(priv) & ~AT91_MB_MASK(priv->rx_next); napi_complete(napi); at91_write(priv, AT91_IER, reg_ier); @@ -783,7 +876,7 @@ static void at91_irq_tx(struct net_device *dev, u32 reg_sr) if (likely(reg_msr & AT91_MSR_MRDY && ~reg_msr & AT91_MSR_MABT)) { /* _NOTE_: subtract AT91_MB_TX_FIRST offset from mb! */ - can_get_echo_skb(dev, mb - AT91_MB_TX_FIRST); + can_get_echo_skb(dev, mb - get_mb_tx_first(priv)); dev->stats.tx_packets++; } } @@ -793,8 +886,8 @@ static void at91_irq_tx(struct net_device *dev, u32 reg_sr) * we get a TX int for the last can frame directly before a * wrap around. */ - if ((priv->tx_next & AT91_NEXT_MASK) != 0 || - (priv->tx_echo & AT91_NEXT_MASK) == 0) + if ((priv->tx_next & get_next_mask(priv)) != 0 || + (priv->tx_echo & get_next_mask(priv)) == 0) netif_wake_queue(dev); } @@ -906,6 +999,29 @@ static void at91_irq_err_state(struct net_device *dev, at91_write(priv, AT91_IER, reg_ier); } +static int at91_get_state_by_bec(const struct net_device *dev, + enum can_state *state) +{ + struct can_berr_counter bec; + int err; + + err = at91_get_berr_counter(dev, &bec); + if (err) + return err; + + if (bec.txerr < 96 && bec.rxerr < 96) + *state = CAN_STATE_ERROR_ACTIVE; + else if (bec.txerr < 128 && bec.rxerr < 128) + *state = CAN_STATE_ERROR_WARNING; + else if (bec.txerr < 256 && bec.rxerr < 256) + *state = CAN_STATE_ERROR_PASSIVE; + else + *state = CAN_STATE_BUS_OFF; + + return 0; +} + + static void at91_irq_err(struct net_device *dev) { struct at91_priv *priv = netdev_priv(dev); @@ -913,21 +1029,28 @@ static void at91_irq_err(struct net_device *dev) struct can_frame *cf; enum can_state new_state; u32 reg_sr; + int err; - reg_sr = at91_read(priv, AT91_SR); - - /* we need to look at the unmasked reg_sr */ - if (unlikely(reg_sr & AT91_IRQ_BOFF)) - new_state = CAN_STATE_BUS_OFF; - else if (unlikely(reg_sr & AT91_IRQ_ERRP)) - new_state = CAN_STATE_ERROR_PASSIVE; - else if (unlikely(reg_sr & AT91_IRQ_WARN)) - new_state = CAN_STATE_ERROR_WARNING; - else if (likely(reg_sr & AT91_IRQ_ERRA)) - new_state = CAN_STATE_ERROR_ACTIVE; - else { - netdev_err(dev, "BUG! hardware in undefined state\n"); - return; + if (at91_is_sam9263(priv)) { + reg_sr = at91_read(priv, AT91_SR); + + /* we need to look at the unmasked reg_sr */ + if (unlikely(reg_sr & AT91_IRQ_BOFF)) + new_state = CAN_STATE_BUS_OFF; + else if (unlikely(reg_sr & AT91_IRQ_ERRP)) + new_state = CAN_STATE_ERROR_PASSIVE; + else if (unlikely(reg_sr & AT91_IRQ_WARN)) + new_state = CAN_STATE_ERROR_WARNING; + else if (likely(reg_sr & AT91_IRQ_ERRA)) + new_state = CAN_STATE_ERROR_ACTIVE; + else { + netdev_err(dev, "BUG! hardware in undefined state\n"); + return; + } + } else { + err = at91_get_state_by_bec(dev, &new_state); + if (err) + return; } /* state hasn't changed */ @@ -968,19 +1091,19 @@ static irqreturn_t at91_irq(int irq, void *dev_id) handled = IRQ_HANDLED; /* Receive or error interrupt? -> napi */ - if (reg_sr & (AT91_IRQ_MB_RX | AT91_IRQ_ERR_FRAME)) { + if (reg_sr & (get_irq_mb_rx(priv) | AT91_IRQ_ERR_FRAME)) { /* * The error bits are clear on read, * save for later use. */ priv->reg_sr = reg_sr; at91_write(priv, AT91_IDR, - AT91_IRQ_MB_RX | AT91_IRQ_ERR_FRAME); + get_irq_mb_rx(priv) | AT91_IRQ_ERR_FRAME); napi_schedule(&priv->napi); } /* Transmission complete interrupt */ - if (reg_sr & AT91_IRQ_MB_TX) + if (reg_sr & get_irq_mb_tx(priv)) at91_irq_tx(dev, reg_sr); at91_irq_err(dev); @@ -1123,6 +1246,8 @@ static struct attribute_group at91_sysfs_attr_group = { static int __devinit at91_can_probe(struct platform_device *pdev) { + const struct at91_devtype_data *devtype_data; + enum at91_devtype devtype; struct net_device *dev; struct at91_priv *priv; struct resource *res; @@ -1130,6 +1255,9 @@ static int __devinit at91_can_probe(struct platform_device *pdev) void __iomem *addr; int err, irq; + devtype = pdev->id_entry->driver_data; + devtype_data = &at91_devtype_data[devtype]; + clk = clk_get(&pdev->dev, "can_clk"); if (IS_ERR(clk)) { dev_err(&pdev->dev, "no clock defined\n"); @@ -1157,7 +1285,8 @@ static int __devinit at91_can_probe(struct platform_device *pdev) goto exit_release; } - dev = alloc_candev(sizeof(struct at91_priv), AT91_MB_TX_NUM); + dev = alloc_candev(sizeof(struct at91_priv), + 1 << devtype_data->tx_shift); if (!dev) { err = -ENOMEM; goto exit_iounmap; @@ -1166,7 +1295,6 @@ static int __devinit at91_can_probe(struct platform_device *pdev) dev->netdev_ops = &at91_netdev_ops; dev->irq = irq; dev->flags |= IFF_ECHO; - dev->sysfs_groups[0] = &at91_sysfs_attr_group; priv = netdev_priv(dev); priv->can.clock.freq = clk_get_rate(clk); @@ -1174,13 +1302,18 @@ static int __devinit at91_can_probe(struct platform_device *pdev) priv->can.do_set_mode = at91_set_mode; priv->can.do_get_berr_counter = at91_get_berr_counter; priv->can.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES; - priv->reg_base = addr; priv->dev = dev; + priv->reg_base = addr; + priv->devtype_data = *devtype_data; + priv->devtype_data.type = devtype; priv->clk = clk; priv->pdata = pdev->dev.platform_data; priv->mb0_id = 0x7ff; - netif_napi_add(dev, &priv->napi, at91_poll, AT91_NAPI_WEIGHT); + netif_napi_add(dev, &priv->napi, at91_poll, get_mb_rx_num(priv)); + + if (at91_is_sam9263(priv)) + dev->sysfs_groups[0] = &at91_sysfs_attr_group; dev_set_drvdata(&pdev->dev, dev); SET_NETDEV_DEV(dev, &pdev->dev); @@ -1230,13 +1363,26 @@ static int __devexit at91_can_remove(struct platform_device *pdev) return 0; } +static const struct platform_device_id at91_can_id_table[] = { + { + .name = "at91_can", + .driver_data = AT91_DEVTYPE_SAM9263, + }, { + .name = "at91sam9x5_can", + .driver_data = AT91_DEVTYPE_SAM9X5, + }, { + /* sentinel */ + } +}; + static struct platform_driver at91_can_driver = { - .probe = at91_can_probe, - .remove = __devexit_p(at91_can_remove), - .driver = { - .name = KBUILD_MODNAME, - .owner = THIS_MODULE, + .probe = at91_can_probe, + .remove = __devexit_p(at91_can_remove), + .driver = { + .name = KBUILD_MODNAME, + .owner = THIS_MODULE, }, + .id_table = at91_can_id_table, }; static int __init at91_can_module_init(void) diff --git a/drivers/net/can/bfin_can.c b/drivers/net/can/bfin_can.c index b6e890d28366..a1c5abc38cd2 100644 --- a/drivers/net/can/bfin_can.c +++ b/drivers/net/can/bfin_can.c @@ -79,8 +79,8 @@ static int bfin_can_set_bittiming(struct net_device *dev) if (priv->can.ctrlmode & CAN_CTRLMODE_3_SAMPLES) timing |= SAM; - bfin_write16(®->clock, clk); - bfin_write16(®->timing, timing); + bfin_write(®->clock, clk); + bfin_write(®->timing, timing); dev_info(dev->dev.parent, "setting CLOCK=0x%04x TIMING=0x%04x\n", clk, timing); @@ -96,16 +96,16 @@ static void bfin_can_set_reset_mode(struct net_device *dev) int i; /* disable interrupts */ - bfin_write16(®->mbim1, 0); - bfin_write16(®->mbim2, 0); - bfin_write16(®->gim, 0); + bfin_write(®->mbim1, 0); + bfin_write(®->mbim2, 0); + bfin_write(®->gim, 0); /* reset can and enter configuration mode */ - bfin_write16(®->control, SRS | CCR); + bfin_write(®->control, SRS | CCR); SSYNC(); - bfin_write16(®->control, CCR); + bfin_write(®->control, CCR); SSYNC(); - while (!(bfin_read16(®->control) & CCA)) { + while (!(bfin_read(®->control) & CCA)) { udelay(10); if (--timeout == 0) { dev_err(dev->dev.parent, @@ -119,33 +119,33 @@ static void bfin_can_set_reset_mode(struct net_device *dev) * by writing to CAN Mailbox Configuration Registers 1 and 2 * For all bits: 0 - Mailbox disabled, 1 - Mailbox enabled */ - bfin_write16(®->mc1, 0); - bfin_write16(®->mc2, 0); + bfin_write(®->mc1, 0); + bfin_write(®->mc2, 0); /* Set Mailbox Direction */ - bfin_write16(®->md1, 0xFFFF); /* mailbox 1-16 are RX */ - bfin_write16(®->md2, 0); /* mailbox 17-32 are TX */ + bfin_write(®->md1, 0xFFFF); /* mailbox 1-16 are RX */ + bfin_write(®->md2, 0); /* mailbox 17-32 are TX */ /* RECEIVE_STD_CHL */ for (i = 0; i < 2; i++) { - bfin_write16(®->chl[RECEIVE_STD_CHL + i].id0, 0); - bfin_write16(®->chl[RECEIVE_STD_CHL + i].id1, AME); - bfin_write16(®->chl[RECEIVE_STD_CHL + i].dlc, 0); - bfin_write16(®->msk[RECEIVE_STD_CHL + i].amh, 0x1FFF); - bfin_write16(®->msk[RECEIVE_STD_CHL + i].aml, 0xFFFF); + bfin_write(®->chl[RECEIVE_STD_CHL + i].id0, 0); + bfin_write(®->chl[RECEIVE_STD_CHL + i].id1, AME); + bfin_write(®->chl[RECEIVE_STD_CHL + i].dlc, 0); + bfin_write(®->msk[RECEIVE_STD_CHL + i].amh, 0x1FFF); + bfin_write(®->msk[RECEIVE_STD_CHL + i].aml, 0xFFFF); } /* RECEIVE_EXT_CHL */ for (i = 0; i < 2; i++) { - bfin_write16(®->chl[RECEIVE_EXT_CHL + i].id0, 0); - bfin_write16(®->chl[RECEIVE_EXT_CHL + i].id1, AME | IDE); - bfin_write16(®->chl[RECEIVE_EXT_CHL + i].dlc, 0); - bfin_write16(®->msk[RECEIVE_EXT_CHL + i].amh, 0x1FFF); - bfin_write16(®->msk[RECEIVE_EXT_CHL + i].aml, 0xFFFF); + bfin_write(®->chl[RECEIVE_EXT_CHL + i].id0, 0); + bfin_write(®->chl[RECEIVE_EXT_CHL + i].id1, AME | IDE); + bfin_write(®->chl[RECEIVE_EXT_CHL + i].dlc, 0); + bfin_write(®->msk[RECEIVE_EXT_CHL + i].amh, 0x1FFF); + bfin_write(®->msk[RECEIVE_EXT_CHL + i].aml, 0xFFFF); } - bfin_write16(®->mc2, BIT(TRANSMIT_CHL - 16)); - bfin_write16(®->mc1, BIT(RECEIVE_STD_CHL) + BIT(RECEIVE_EXT_CHL)); + bfin_write(®->mc2, BIT(TRANSMIT_CHL - 16)); + bfin_write(®->mc1, BIT(RECEIVE_STD_CHL) + BIT(RECEIVE_EXT_CHL)); SSYNC(); priv->can.state = CAN_STATE_STOPPED; @@ -160,9 +160,9 @@ static void bfin_can_set_normal_mode(struct net_device *dev) /* * leave configuration mode */ - bfin_write16(®->control, bfin_read16(®->control) & ~CCR); + bfin_write(®->control, bfin_read(®->control) & ~CCR); - while (bfin_read16(®->status) & CCA) { + while (bfin_read(®->status) & CCA) { udelay(10); if (--timeout == 0) { dev_err(dev->dev.parent, @@ -174,25 +174,25 @@ static void bfin_can_set_normal_mode(struct net_device *dev) /* * clear _All_ tx and rx interrupts */ - bfin_write16(®->mbtif1, 0xFFFF); - bfin_write16(®->mbtif2, 0xFFFF); - bfin_write16(®->mbrif1, 0xFFFF); - bfin_write16(®->mbrif2, 0xFFFF); + bfin_write(®->mbtif1, 0xFFFF); + bfin_write(®->mbtif2, 0xFFFF); + bfin_write(®->mbrif1, 0xFFFF); + bfin_write(®->mbrif2, 0xFFFF); /* * clear global interrupt status register */ - bfin_write16(®->gis, 0x7FF); /* overwrites with '1' */ + bfin_write(®->gis, 0x7FF); /* overwrites with '1' */ /* * Initialize Interrupts * - set bits in the mailbox interrupt mask register * - global interrupt mask */ - bfin_write16(®->mbim1, BIT(RECEIVE_STD_CHL) + BIT(RECEIVE_EXT_CHL)); - bfin_write16(®->mbim2, BIT(TRANSMIT_CHL - 16)); + bfin_write(®->mbim1, BIT(RECEIVE_STD_CHL) + BIT(RECEIVE_EXT_CHL)); + bfin_write(®->mbim2, BIT(TRANSMIT_CHL - 16)); - bfin_write16(®->gim, EPIM | BOIM | RMLIM); + bfin_write(®->gim, EPIM | BOIM | RMLIM); SSYNC(); } @@ -242,37 +242,28 @@ static int bfin_can_start_xmit(struct sk_buff *skb, struct net_device *dev) /* fill id */ if (id & CAN_EFF_FLAG) { - bfin_write16(®->chl[TRANSMIT_CHL].id0, id); - if (id & CAN_RTR_FLAG) - writew(((id & 0x1FFF0000) >> 16) | IDE | AME | RTR, - ®->chl[TRANSMIT_CHL].id1); - else - writew(((id & 0x1FFF0000) >> 16) | IDE | AME, - ®->chl[TRANSMIT_CHL].id1); - - } else { - if (id & CAN_RTR_FLAG) - writew((id << 2) | AME | RTR, - ®->chl[TRANSMIT_CHL].id1); - else - bfin_write16(®->chl[TRANSMIT_CHL].id1, - (id << 2) | AME); - } + bfin_write(®->chl[TRANSMIT_CHL].id0, id); + val = ((id & 0x1FFF0000) >> 16) | IDE; + } else + val = (id << 2); + if (id & CAN_RTR_FLAG) + val |= RTR; + bfin_write(®->chl[TRANSMIT_CHL].id1, val | AME); /* fill payload */ for (i = 0; i < 8; i += 2) { val = ((7 - i) < dlc ? (data[7 - i]) : 0) + ((6 - i) < dlc ? (data[6 - i] << 8) : 0); - bfin_write16(®->chl[TRANSMIT_CHL].data[i], val); + bfin_write(®->chl[TRANSMIT_CHL].data[i], val); } /* fill data length code */ - bfin_write16(®->chl[TRANSMIT_CHL].dlc, dlc); + bfin_write(®->chl[TRANSMIT_CHL].dlc, dlc); can_put_echo_skb(skb, dev, 0); /* set transmit request */ - bfin_write16(®->trs2, BIT(TRANSMIT_CHL - 16)); + bfin_write(®->trs2, BIT(TRANSMIT_CHL - 16)); return 0; } @@ -295,26 +286,26 @@ static void bfin_can_rx(struct net_device *dev, u16 isrc) /* get id */ if (isrc & BIT(RECEIVE_EXT_CHL)) { /* extended frame format (EFF) */ - cf->can_id = ((bfin_read16(®->chl[RECEIVE_EXT_CHL].id1) + cf->can_id = ((bfin_read(®->chl[RECEIVE_EXT_CHL].id1) & 0x1FFF) << 16) - + bfin_read16(®->chl[RECEIVE_EXT_CHL].id0); + + bfin_read(®->chl[RECEIVE_EXT_CHL].id0); cf->can_id |= CAN_EFF_FLAG; obj = RECEIVE_EXT_CHL; } else { /* standard frame format (SFF) */ - cf->can_id = (bfin_read16(®->chl[RECEIVE_STD_CHL].id1) + cf->can_id = (bfin_read(®->chl[RECEIVE_STD_CHL].id1) & 0x1ffc) >> 2; obj = RECEIVE_STD_CHL; } - if (bfin_read16(®->chl[obj].id1) & RTR) + if (bfin_read(®->chl[obj].id1) & RTR) cf->can_id |= CAN_RTR_FLAG; /* get data length code */ - cf->can_dlc = get_can_dlc(bfin_read16(®->chl[obj].dlc) & 0xF); + cf->can_dlc = get_can_dlc(bfin_read(®->chl[obj].dlc) & 0xF); /* get payload */ for (i = 0; i < 8; i += 2) { - val = bfin_read16(®->chl[obj].data[i]); + val = bfin_read(®->chl[obj].data[i]); cf->data[7 - i] = (7 - i) < cf->can_dlc ? val : 0; cf->data[6 - i] = (6 - i) < cf->can_dlc ? (val >> 8) : 0; } @@ -368,7 +359,7 @@ static int bfin_can_err(struct net_device *dev, u16 isrc, u16 status) if (state != priv->can.state && (state == CAN_STATE_ERROR_WARNING || state == CAN_STATE_ERROR_PASSIVE)) { - u16 cec = bfin_read16(®->cec); + u16 cec = bfin_read(®->cec); u8 rxerr = cec; u8 txerr = cec >> 8; @@ -419,23 +410,23 @@ irqreturn_t bfin_can_interrupt(int irq, void *dev_id) struct net_device_stats *stats = &dev->stats; u16 status, isrc; - if ((irq == priv->tx_irq) && bfin_read16(®->mbtif2)) { + if ((irq == priv->tx_irq) && bfin_read(®->mbtif2)) { /* transmission complete interrupt */ - bfin_write16(®->mbtif2, 0xFFFF); + bfin_write(®->mbtif2, 0xFFFF); stats->tx_packets++; - stats->tx_bytes += bfin_read16(®->chl[TRANSMIT_CHL].dlc); + stats->tx_bytes += bfin_read(®->chl[TRANSMIT_CHL].dlc); can_get_echo_skb(dev, 0); netif_wake_queue(dev); - } else if ((irq == priv->rx_irq) && bfin_read16(®->mbrif1)) { + } else if ((irq == priv->rx_irq) && bfin_read(®->mbrif1)) { /* receive interrupt */ - isrc = bfin_read16(®->mbrif1); - bfin_write16(®->mbrif1, 0xFFFF); + isrc = bfin_read(®->mbrif1); + bfin_write(®->mbrif1, 0xFFFF); bfin_can_rx(dev, isrc); - } else if ((irq == priv->err_irq) && bfin_read16(®->gis)) { + } else if ((irq == priv->err_irq) && bfin_read(®->gis)) { /* error interrupt */ - isrc = bfin_read16(®->gis); - status = bfin_read16(®->esr); - bfin_write16(®->gis, 0x7FF); + isrc = bfin_read(®->gis); + status = bfin_read(®->esr); + bfin_write(®->gis, 0x7FF); bfin_can_err(dev, isrc, status); } else { return IRQ_NONE; @@ -640,9 +631,9 @@ static int bfin_can_suspend(struct platform_device *pdev, pm_message_t mesg) if (netif_running(dev)) { /* enter sleep mode */ - bfin_write16(®->control, bfin_read16(®->control) | SMR); + bfin_write(®->control, bfin_read(®->control) | SMR); SSYNC(); - while (!(bfin_read16(®->intr) & SMACK)) { + while (!(bfin_read(®->intr) & SMACK)) { udelay(10); if (--timeout == 0) { dev_err(dev->dev.parent, @@ -663,7 +654,7 @@ static int bfin_can_resume(struct platform_device *pdev) if (netif_running(dev)) { /* leave sleep mode */ - bfin_write16(®->intr, 0); + bfin_write(®->intr, 0); SSYNC(); } diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c index ff212916810b..536bda072a16 100644 --- a/drivers/net/can/c_can/c_can.c +++ b/drivers/net/can/c_can/c_can.c @@ -26,7 +26,6 @@ */ #include <linux/kernel.h> -#include <linux/version.h> #include <linux/module.h> #include <linux/interrupt.h> #include <linux/delay.h> diff --git a/drivers/net/can/c_can/c_can_platform.c b/drivers/net/can/c_can/c_can_platform.c index 0b071564d1dc..0b5c6f8bdd34 100644 --- a/drivers/net/can/c_can/c_can_platform.c +++ b/drivers/net/can/c_can/c_can_platform.c @@ -20,7 +20,6 @@ */ #include <linux/kernel.h> -#include <linux/version.h> #include <linux/module.h> #include <linux/interrupt.h> #include <linux/delay.h> diff --git a/drivers/net/can/dev.c b/drivers/net/can/dev.c index d0f8c7e67e7d..9bf1116e5b5e 100644 --- a/drivers/net/can/dev.c +++ b/drivers/net/can/dev.c @@ -208,7 +208,7 @@ static int can_fixup_bittiming(struct net_device *dev, struct can_bittiming *bt) return 0; } -int can_get_bittiming(struct net_device *dev, struct can_bittiming *bt) +static int can_get_bittiming(struct net_device *dev, struct can_bittiming *bt) { struct can_priv *priv = netdev_priv(dev); int err; diff --git a/drivers/net/can/janz-ican3.c b/drivers/net/can/janz-ican3.c index f1942cab35f6..32778d56d330 100644 --- a/drivers/net/can/janz-ican3.c +++ b/drivers/net/can/janz-ican3.c @@ -22,6 +22,7 @@ #include <linux/can/error.h> #include <linux/mfd/janz.h> +#include <asm/io.h> /* the DPM has 64k of memory, organized into 256x 256 byte pages */ #define DPM_NUM_PAGES 256 diff --git a/drivers/net/can/sja1000/sja1000.h b/drivers/net/can/sja1000/sja1000.h index de8e778f6832..78bd4ecac140 100644 --- a/drivers/net/can/sja1000/sja1000.h +++ b/drivers/net/can/sja1000/sja1000.h @@ -47,6 +47,7 @@ #ifndef SJA1000_DEV_H #define SJA1000_DEV_H +#include <linux/irqreturn.h> #include <linux/can/dev.h> #include <linux/can/platform/sja1000.h> diff --git a/drivers/net/can/sja1000/sja1000_of_platform.c b/drivers/net/can/sja1000/sja1000_of_platform.c index 9793df6e3455..cee6ba2b8b58 100644 --- a/drivers/net/can/sja1000/sja1000_of_platform.c +++ b/drivers/net/can/sja1000/sja1000_of_platform.c @@ -38,6 +38,7 @@ #include <linux/interrupt.h> #include <linux/netdevice.h> #include <linux/delay.h> +#include <linux/io.h> #include <linux/can/dev.h> #include <linux/of_platform.h> diff --git a/drivers/net/can/slcan.c b/drivers/net/can/slcan.c index 1b49df6b2470..f523f1cc5142 100644 --- a/drivers/net/can/slcan.c +++ b/drivers/net/can/slcan.c @@ -56,6 +56,7 @@ #include <linux/sched.h> #include <linux/delay.h> #include <linux/init.h> +#include <linux/kernel.h> #include <linux/can.h> static __initdata const char banner[] = @@ -95,10 +96,6 @@ struct slcan { unsigned long flags; /* Flag values/ mode etc */ #define SLF_INUSE 0 /* Channel in use */ #define SLF_ERROR 1 /* Parity, etc. error */ - - unsigned char leased; - dev_t line; - pid_t pid; }; static struct net_device **slcan_devs; @@ -142,21 +139,6 @@ static struct net_device **slcan_devs; * STANDARD SLCAN DECAPSULATION * ************************************************************************/ -static int asc2nibble(char c) -{ - - if ((c >= '0') && (c <= '9')) - return c - '0'; - - if ((c >= 'A') && (c <= 'F')) - return c - 'A' + 10; - - if ((c >= 'a') && (c <= 'f')) - return c - 'a' + 10; - - return 16; /* error */ -} - /* Send one completely decapsulated can_frame to the network layer */ static void slc_bump(struct slcan *sl) { @@ -195,18 +177,16 @@ static void slc_bump(struct slcan *sl) *(u64 *) (&cf.data) = 0; /* clear payload */ for (i = 0, dlc_pos++; i < cf.can_dlc; i++) { - - tmp = asc2nibble(sl->rbuff[dlc_pos++]); - if (tmp > 0x0F) + tmp = hex_to_bin(sl->rbuff[dlc_pos++]); + if (tmp < 0) return; cf.data[i] = (tmp << 4); - tmp = asc2nibble(sl->rbuff[dlc_pos++]); - if (tmp > 0x0F) + tmp = hex_to_bin(sl->rbuff[dlc_pos++]); + if (tmp < 0) return; cf.data[i] |= tmp; } - skb = dev_alloc_skb(sizeof(struct can_frame)); if (!skb) return; @@ -462,7 +442,7 @@ static void slc_sync(void) break; sl = netdev_priv(dev); - if (sl->tty || sl->leased) + if (sl->tty) continue; if (dev->flags & IFF_UP) dev_close(dev); @@ -473,12 +453,10 @@ static void slc_sync(void) static struct slcan *slc_alloc(dev_t line) { int i; + char name[IFNAMSIZ]; struct net_device *dev = NULL; struct slcan *sl; - if (slcan_devs == NULL) - return NULL; /* Master array missing ! */ - for (i = 0; i < maxdev; i++) { dev = slcan_devs[i]; if (dev == NULL) @@ -490,25 +468,12 @@ static struct slcan *slc_alloc(dev_t line) if (i >= maxdev) return NULL; - if (dev) { - sl = netdev_priv(dev); - if (test_bit(SLF_INUSE, &sl->flags)) { - unregister_netdevice(dev); - dev = NULL; - slcan_devs[i] = NULL; - } - } - - if (!dev) { - char name[IFNAMSIZ]; - sprintf(name, "slcan%d", i); - - dev = alloc_netdev(sizeof(*sl), name, slc_setup); - if (!dev) - return NULL; - dev->base_addr = i; - } + sprintf(name, "slcan%d", i); + dev = alloc_netdev(sizeof(*sl), name, slc_setup); + if (!dev) + return NULL; + dev->base_addr = i; sl = netdev_priv(dev); /* Initialize channel control data */ @@ -565,8 +530,6 @@ static int slcan_open(struct tty_struct *tty) sl->tty = tty; tty->disc_data = sl; - sl->line = tty_devnum(tty); - sl->pid = current->pid; if (!test_bit(SLF_INUSE, &sl->flags)) { /* Perform the low-level SLCAN initialization. */ @@ -617,8 +580,6 @@ static void slcan_close(struct tty_struct *tty) tty->disc_data = NULL; sl->tty = NULL; - if (!sl->leased) - sl->line = 0; /* Flush network side */ unregister_netdev(sl->dev); diff --git a/drivers/net/can/softing/softing_fw.c b/drivers/net/can/softing/softing_fw.c index b520784fb197..310596175676 100644 --- a/drivers/net/can/softing/softing_fw.c +++ b/drivers/net/can/softing/softing_fw.c @@ -20,6 +20,7 @@ #include <linux/firmware.h> #include <linux/sched.h> #include <asm/div64.h> +#include <asm/io.h> #include "softing.h" diff --git a/drivers/net/can/softing/softing_main.c b/drivers/net/can/softing/softing_main.c index f76e88e74285..09a8b86cf1ac 100644 --- a/drivers/net/can/softing/softing_main.c +++ b/drivers/net/can/softing/softing_main.c @@ -17,10 +17,10 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ -#include <linux/version.h> #include <linux/module.h> #include <linux/init.h> #include <linux/interrupt.h> +#include <asm/io.h> #include "softing.h" |
