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linux-can-next-for-4.7-20160509

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Merge tag 'linux-can-next-for-4.7-20160509' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next

Marc Kleine-Budde says:

====================
pull-request: can-next 2016-05-09

this is a pull request of 12 patches for net-next/master.

Alexander Gerasiov and Nikita Edward Baruzdin each contribute a patch
improving the sja1000 driver. Amitoj Kaur Chawla's patch converts the
mcp251x driver to alloc_workqueue(). A patch by Oliver Hartkopp fixes
the handling of CAN config options. Andreas Gröger improves the error
handling in the janz-ican3 driver. The patch by Maximilian Schneider
for the gs_usb improves probing of the USB driver. Finally there are 6
improvement patches by Marek Vasut for the ifi CAN driver.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2016-05-10 14:19:06 -04:00
commit 7a27de7810
9 changed files with 367 additions and 80 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

56
drivers/net/can/dev.c
View File

@ -696,11 +696,17 @@ int can_change_mtu(struct net_device *dev, int new_mtu)
/* allow change of MTU according to the CANFD ability of the device */
switch (new_mtu) {
case CAN_MTU:
/* 'CANFD-only' controllers can not switch to CAN_MTU */
if (priv->ctrlmode_static & CAN_CTRLMODE_FD)
return -EINVAL;
priv->ctrlmode &= ~CAN_CTRLMODE_FD;
break;
case CANFD_MTU:
if (!(priv->ctrlmode_supported & CAN_CTRLMODE_FD))
/* check for potential CANFD ability */
if (!(priv->ctrlmode_supported & CAN_CTRLMODE_FD) &&
!(priv->ctrlmode_static & CAN_CTRLMODE_FD))
return -EINVAL;
priv->ctrlmode |= CAN_CTRLMODE_FD;
@ -782,6 +788,35 @@ static const struct nla_policy can_policy[IFLA_CAN_MAX + 1] = {
= { .len = sizeof(struct can_bittiming_const) },
};
static int can_validate(struct nlattr *tb[], struct nlattr *data[])
{
bool is_can_fd = false;
/* Make sure that valid CAN FD configurations always consist of
* - nominal/arbitration bittiming
* - data bittiming
* - control mode with CAN_CTRLMODE_FD set
*/
if (data[IFLA_CAN_CTRLMODE]) {
struct can_ctrlmode *cm = nla_data(data[IFLA_CAN_CTRLMODE]);
is_can_fd = cm->flags & cm->mask & CAN_CTRLMODE_FD;
}
if (is_can_fd) {
if (!data[IFLA_CAN_BITTIMING] || !data[IFLA_CAN_DATA_BITTIMING])
return -EOPNOTSUPP;
}
if (data[IFLA_CAN_DATA_BITTIMING]) {
if (!is_can_fd || !data[IFLA_CAN_BITTIMING])
return -EOPNOTSUPP;
}
return 0;
}
static int can_changelink(struct net_device *dev,
struct nlattr *tb[], struct nlattr *data[])
{
@ -813,19 +848,31 @@ static int can_changelink(struct net_device *dev,
if (data[IFLA_CAN_CTRLMODE]) {
struct can_ctrlmode *cm;
u32 ctrlstatic;
u32 maskedflags;
/* Do not allow changing controller mode while running */
if (dev->flags & IFF_UP)
return -EBUSY;
cm = nla_data(data[IFLA_CAN_CTRLMODE]);
ctrlstatic = priv->ctrlmode_static;
maskedflags = cm->flags & cm->mask;
/* check whether changed bits are allowed to be modified */
if (cm->mask & ~priv->ctrlmode_supported)
/* check whether provided bits are allowed to be passed */
if (cm->mask & ~(priv->ctrlmode_supported | ctrlstatic))
return -EOPNOTSUPP;
/* do not check for static fd-non-iso if 'fd' is disabled */
if (!(maskedflags & CAN_CTRLMODE_FD))
ctrlstatic &= ~CAN_CTRLMODE_FD_NON_ISO;
/* make sure static options are provided by configuration */
if ((maskedflags & ctrlstatic) != ctrlstatic)
return -EOPNOTSUPP;
/* clear bits to be modified and copy the flag values */
priv->ctrlmode &= ~cm->mask;
priv->ctrlmode |= (cm->flags & cm->mask);
priv->ctrlmode |= maskedflags;
/* CAN_CTRLMODE_FD can only be set when driver supports FD */
if (priv->ctrlmode & CAN_CTRLMODE_FD)
@ -966,6 +1013,7 @@ static struct rtnl_link_ops can_link_ops __read_mostly = {
.maxtype = IFLA_CAN_MAX,
.policy = can_policy,
.setup = can_setup,
.validate = can_validate,
.newlink = can_newlink,
.changelink = can_changelink,
.get_size = can_get_size,

187
drivers/net/can/ifi_canfd/ifi_canfd.c
View File

@ -34,6 +34,7 @@
#define IFI_CANFD_STCMD_LOOPBACK BIT(18)
#define IFI_CANFD_STCMD_DISABLE_CANFD BIT(24)
#define IFI_CANFD_STCMD_ENABLE_ISO BIT(25)
#define IFI_CANFD_STCMD_ENABLE_7_9_8_8_TIMING BIT(26)
#define IFI_CANFD_STCMD_NORMAL_MODE ((u32)BIT(31))
#define IFI_CANFD_RXSTCMD 0x4
@ -51,7 +52,8 @@
#define IFI_CANFD_TXSTCMD_OVERFLOW BIT(13)
#define IFI_CANFD_INTERRUPT 0xc
#define IFI_CANFD_INTERRUPT_ERROR_WARNING ((u32)BIT(1))
#define IFI_CANFD_INTERRUPT_ERROR_WARNING BIT(1)
#define IFI_CANFD_INTERRUPT_ERROR_COUNTER BIT(10)
#define IFI_CANFD_INTERRUPT_TXFIFO_EMPTY BIT(16)
#define IFI_CANFD_INTERRUPT_TXFIFO_REMOVE BIT(22)
#define IFI_CANFD_INTERRUPT_RXFIFO_NEMPTY BIT(24)
@ -71,12 +73,12 @@
#define IFI_CANFD_TIME_TIMEB_OFF 0
#define IFI_CANFD_TIME_TIMEA_OFF 8
#define IFI_CANFD_TIME_PRESCALE_OFF 16
#define IFI_CANFD_TIME_SJW_OFF_ISO 25
#define IFI_CANFD_TIME_SJW_OFF_BOSCH 28
#define IFI_CANFD_TIME_SET_SJW_BOSCH BIT(6)
#define IFI_CANFD_TIME_SET_TIMEB_BOSCH BIT(7)
#define IFI_CANFD_TIME_SET_PRESC_BOSCH BIT(14)
#define IFI_CANFD_TIME_SET_TIMEA_BOSCH BIT(15)
#define IFI_CANFD_TIME_SJW_OFF_7_9_8_8 25
#define IFI_CANFD_TIME_SJW_OFF_4_12_6_6 28
#define IFI_CANFD_TIME_SET_SJW_4_12_6_6 BIT(6)
#define IFI_CANFD_TIME_SET_TIMEB_4_12_6_6 BIT(7)
#define IFI_CANFD_TIME_SET_PRESC_4_12_6_6 BIT(14)
#define IFI_CANFD_TIME_SET_TIMEA_4_12_6_6 BIT(15)
#define IFI_CANFD_TDELAY 0x1c
@ -102,7 +104,26 @@
#define IFI_CANFD_RES1 0x40
#define IFI_CANFD_RES2 0x44
#define IFI_CANFD_ERROR_CTR 0x44
#define IFI_CANFD_ERROR_CTR_UNLOCK_MAGIC 0x21302899
#define IFI_CANFD_ERROR_CTR_OVERLOAD_FIRST BIT(0)
#define IFI_CANFD_ERROR_CTR_ACK_ERROR_FIRST BIT(1)
#define IFI_CANFD_ERROR_CTR_BIT0_ERROR_FIRST BIT(2)
#define IFI_CANFD_ERROR_CTR_BIT1_ERROR_FIRST BIT(3)
#define IFI_CANFD_ERROR_CTR_STUFF_ERROR_FIRST BIT(4)
#define IFI_CANFD_ERROR_CTR_CRC_ERROR_FIRST BIT(5)
#define IFI_CANFD_ERROR_CTR_FORM_ERROR_FIRST BIT(6)
#define IFI_CANFD_ERROR_CTR_OVERLOAD_ALL BIT(8)
#define IFI_CANFD_ERROR_CTR_ACK_ERROR_ALL BIT(9)
#define IFI_CANFD_ERROR_CTR_BIT0_ERROR_ALL BIT(10)
#define IFI_CANFD_ERROR_CTR_BIT1_ERROR_ALL BIT(11)
#define IFI_CANFD_ERROR_CTR_STUFF_ERROR_ALL BIT(12)
#define IFI_CANFD_ERROR_CTR_CRC_ERROR_ALL BIT(13)
#define IFI_CANFD_ERROR_CTR_FORM_ERROR_ALL BIT(14)
#define IFI_CANFD_ERROR_CTR_BITPOSITION_OFFSET 16
#define IFI_CANFD_ERROR_CTR_BITPOSITION_MASK 0xff
#define IFI_CANFD_ERROR_CTR_ER_RESET BIT(30)
#define IFI_CANFD_ERROR_CTR_ER_ENABLE ((u32)BIT(31))
#define IFI_CANFD_PAR 0x48
@ -196,6 +217,8 @@ static void ifi_canfd_irq_enable(struct net_device *ndev, bool enable)
if (enable) {
enirq = IFI_CANFD_IRQMASK_TXFIFO_EMPTY |
IFI_CANFD_IRQMASK_RXFIFO_NEMPTY;
if (priv->can.ctrlmode & CAN_CTRLMODE_BERR_REPORTING)
enirq |= IFI_CANFD_INTERRUPT_ERROR_COUNTER;
}
writel(IFI_CANFD_IRQMASK_SET_ERR |
@ -334,6 +357,68 @@ static int ifi_canfd_handle_lost_msg(struct net_device *ndev)
return 1;
}
static int ifi_canfd_handle_lec_err(struct net_device *ndev, const u32 errctr)
{
struct ifi_canfd_priv *priv = netdev_priv(ndev);
struct net_device_stats *stats = &ndev->stats;
struct can_frame *cf;
struct sk_buff *skb;
const u32 errmask = IFI_CANFD_ERROR_CTR_OVERLOAD_FIRST |
IFI_CANFD_ERROR_CTR_ACK_ERROR_FIRST |
IFI_CANFD_ERROR_CTR_BIT0_ERROR_FIRST |
IFI_CANFD_ERROR_CTR_BIT1_ERROR_FIRST |
IFI_CANFD_ERROR_CTR_STUFF_ERROR_FIRST |
IFI_CANFD_ERROR_CTR_CRC_ERROR_FIRST |
IFI_CANFD_ERROR_CTR_FORM_ERROR_FIRST;
if (!(errctr & errmask)) /* No error happened. */
return 0;
priv->can.can_stats.bus_error++;
stats->rx_errors++;
/* Propagate the error condition to the CAN stack. */
skb = alloc_can_err_skb(ndev, &cf);
if (unlikely(!skb))
return 0;
/* Read the error counter register and check for new errors. */
cf->can_id |= CAN_ERR_PROT | CAN_ERR_BUSERROR;
if (errctr & IFI_CANFD_ERROR_CTR_OVERLOAD_FIRST)
cf->data[2] |= CAN_ERR_PROT_OVERLOAD;
if (errctr & IFI_CANFD_ERROR_CTR_ACK_ERROR_FIRST)
cf->data[3] = CAN_ERR_PROT_LOC_ACK;
if (errctr & IFI_CANFD_ERROR_CTR_BIT0_ERROR_FIRST)
cf->data[2] |= CAN_ERR_PROT_BIT0;
if (errctr & IFI_CANFD_ERROR_CTR_BIT1_ERROR_FIRST)
cf->data[2] |= CAN_ERR_PROT_BIT1;
if (errctr & IFI_CANFD_ERROR_CTR_STUFF_ERROR_FIRST)
cf->data[2] |= CAN_ERR_PROT_STUFF;
if (errctr & IFI_CANFD_ERROR_CTR_CRC_ERROR_FIRST)
cf->data[3] = CAN_ERR_PROT_LOC_CRC_SEQ;
if (errctr & IFI_CANFD_ERROR_CTR_FORM_ERROR_FIRST)
cf->data[2] |= CAN_ERR_PROT_FORM;
/* Reset the error counter, ack the IRQ and re-enable the counter. */
writel(IFI_CANFD_ERROR_CTR_ER_RESET, priv->base + IFI_CANFD_ERROR_CTR);
writel(IFI_CANFD_INTERRUPT_ERROR_COUNTER,
priv->base + IFI_CANFD_INTERRUPT);
writel(IFI_CANFD_ERROR_CTR_ER_ENABLE, priv->base + IFI_CANFD_ERROR_CTR);
stats->rx_packets++;
stats->rx_bytes += cf->can_dlc;
netif_receive_skb(skb);
return 1;
}
static int ifi_canfd_get_berr_counter(const struct net_device *ndev,
struct can_berr_counter *bec)
{
@ -469,6 +554,7 @@ static int ifi_canfd_poll(struct napi_struct *napi, int quota)
u32 stcmd = readl(priv->base + IFI_CANFD_STCMD);
u32 rxstcmd = readl(priv->base + IFI_CANFD_STCMD);
u32 errctr = readl(priv->base + IFI_CANFD_ERROR_CTR);
/* Handle bus state changes */
if ((stcmd & stcmd_state_mask) ||
@ -479,6 +565,10 @@ static int ifi_canfd_poll(struct napi_struct *napi, int quota)
if (rxstcmd & IFI_CANFD_RXSTCMD_OVERFLOW)
work_done += ifi_canfd_handle_lost_msg(ndev);
/* Handle lec errors on the bus */
if (priv->can.ctrlmode & CAN_CTRLMODE_BERR_REPORTING)
work_done += ifi_canfd_handle_lec_err(ndev, errctr);
/* Handle normal messages on RX */
if (!(rxstcmd & IFI_CANFD_RXSTCMD_EMPTY))
work_done += ifi_canfd_do_rx_poll(ndev, quota - work_done);
@ -497,11 +587,13 @@ static irqreturn_t ifi_canfd_isr(int irq, void *dev_id)
struct ifi_canfd_priv *priv = netdev_priv(ndev);
struct net_device_stats *stats = &ndev->stats;
const u32 rx_irq_mask = IFI_CANFD_INTERRUPT_RXFIFO_NEMPTY |
IFI_CANFD_INTERRUPT_RXFIFO_NEMPTY_PER;
IFI_CANFD_INTERRUPT_RXFIFO_NEMPTY_PER |
IFI_CANFD_INTERRUPT_ERROR_WARNING |
IFI_CANFD_INTERRUPT_ERROR_COUNTER;
const u32 tx_irq_mask = IFI_CANFD_INTERRUPT_TXFIFO_EMPTY |
IFI_CANFD_INTERRUPT_TXFIFO_REMOVE;
const u32 clr_irq_mask = ~(IFI_CANFD_INTERRUPT_SET_IRQ |
IFI_CANFD_INTERRUPT_ERROR_WARNING);
const u32 clr_irq_mask = ~((u32)(IFI_CANFD_INTERRUPT_SET_IRQ |
IFI_CANFD_INTERRUPT_ERROR_WARNING));
u32 isr;
isr = readl(priv->base + IFI_CANFD_INTERRUPT);
@ -513,44 +605,34 @@ static irqreturn_t ifi_canfd_isr(int irq, void *dev_id)
/* Clear all pending interrupts but ErrWarn */
writel(clr_irq_mask, priv->base + IFI_CANFD_INTERRUPT);
/* RX IRQ, start NAPI */
/* RX IRQ or bus warning, start NAPI */
if (isr & rx_irq_mask) {
ifi_canfd_irq_enable(ndev, 0);
napi_schedule(&priv->napi);
}
/* TX IRQ */
if (isr & tx_irq_mask) {
if (isr & IFI_CANFD_INTERRUPT_TXFIFO_REMOVE) {
stats->tx_bytes += can_get_echo_skb(ndev, 0);
stats->tx_packets++;
can_led_event(ndev, CAN_LED_EVENT_TX);
netif_wake_queue(ndev);
}
if (isr & tx_irq_mask)
netif_wake_queue(ndev);
return IRQ_HANDLED;
}
static const struct can_bittiming_const ifi_canfd_bittiming_const = {
.name = KBUILD_MODNAME,
.tseg1_min = 1, /* Time segment 1 = prop_seg + phase_seg1 */
.tseg1_max = 64,
.tseg1_max = 256,
.tseg2_min = 2, /* Time segment 2 = phase_seg2 */
.tseg2_max = 64,
.sjw_max = 16,
.tseg2_max = 256,
.sjw_max = 128,
.brp_min = 2,
.brp_max = 256,
.brp_inc = 1,
};
static const struct can_bittiming_const ifi_canfd_data_bittiming_const = {
.name = KBUILD_MODNAME,
.tseg1_min = 1, /* Time segment 1 = prop_seg + phase_seg1 */
.tseg1_max = 64,
.tseg2_min = 2, /* Time segment 2 = phase_seg2 */
.tseg2_max = 64,
.sjw_max = 16,
.brp_min = 2,
.brp_max = 256,
.brp_max = 512,
.brp_inc = 1,
};
@ -560,19 +642,6 @@ static void ifi_canfd_set_bittiming(struct net_device *ndev)
const struct can_bittiming *bt = &priv->can.bittiming;
const struct can_bittiming *dbt = &priv->can.data_bittiming;
u16 brp, sjw, tseg1, tseg2;
u32 noniso_arg = 0;
u32 time_off;
if ((priv->can.ctrlmode & CAN_CTRLMODE_FD) &&
!(priv->can.ctrlmode & CAN_CTRLMODE_FD_NON_ISO)) {
time_off = IFI_CANFD_TIME_SJW_OFF_ISO;
} else {
noniso_arg = IFI_CANFD_TIME_SET_TIMEB_BOSCH |
IFI_CANFD_TIME_SET_TIMEA_BOSCH |
IFI_CANFD_TIME_SET_PRESC_BOSCH |
IFI_CANFD_TIME_SET_SJW_BOSCH;
time_off = IFI_CANFD_TIME_SJW_OFF_BOSCH;
}
/* Configure bit timing */
brp = bt->brp - 2;
@ -582,8 +651,7 @@ static void ifi_canfd_set_bittiming(struct net_device *ndev)
writel((tseg2 << IFI_CANFD_TIME_TIMEB_OFF) |
(tseg1 << IFI_CANFD_TIME_TIMEA_OFF) |
(brp << IFI_CANFD_TIME_PRESCALE_OFF) |
(sjw << time_off) |
noniso_arg,
(sjw << IFI_CANFD_TIME_SJW_OFF_7_9_8_8),
priv->base + IFI_CANFD_TIME);
/* Configure data bit timing */
@ -594,8 +662,7 @@ static void ifi_canfd_set_bittiming(struct net_device *ndev)
writel((tseg2 << IFI_CANFD_TIME_TIMEB_OFF) |
(tseg1 << IFI_CANFD_TIME_TIMEA_OFF) |
(brp << IFI_CANFD_TIME_PRESCALE_OFF) |
(sjw << time_off) |
noniso_arg,
(sjw << IFI_CANFD_TIME_SJW_OFF_7_9_8_8),
priv->base + IFI_CANFD_FTIME);
}
@ -640,7 +707,8 @@ static void ifi_canfd_start(struct net_device *ndev)
/* Reset the IP */
writel(IFI_CANFD_STCMD_HARDRESET, priv->base + IFI_CANFD_STCMD);
writel(0, priv->base + IFI_CANFD_STCMD);
writel(IFI_CANFD_STCMD_ENABLE_7_9_8_8_TIMING,
priv->base + IFI_CANFD_STCMD);
ifi_canfd_set_bittiming(ndev);
ifi_canfd_set_filters(ndev);
@ -659,7 +727,8 @@ static void ifi_canfd_start(struct net_device *ndev)
writel((u32)(~IFI_CANFD_INTERRUPT_SET_IRQ),
priv->base + IFI_CANFD_INTERRUPT);
stcmd = IFI_CANFD_STCMD_ENABLE | IFI_CANFD_STCMD_NORMAL_MODE;
stcmd = IFI_CANFD_STCMD_ENABLE | IFI_CANFD_STCMD_NORMAL_MODE |
IFI_CANFD_STCMD_ENABLE_7_9_8_8_TIMING;
if (priv->can.ctrlmode & CAN_CTRLMODE_LISTENONLY)
stcmd |= IFI_CANFD_STCMD_BUSMONITOR;
@ -667,16 +736,23 @@ static void ifi_canfd_start(struct net_device *ndev)
if (priv->can.ctrlmode & CAN_CTRLMODE_LOOPBACK)
stcmd |= IFI_CANFD_STCMD_LOOPBACK;
if (priv->can.ctrlmode & CAN_CTRLMODE_FD)
if ((priv->can.ctrlmode & CAN_CTRLMODE_FD) &&
!(priv->can.ctrlmode & CAN_CTRLMODE_FD_NON_ISO))
stcmd |= IFI_CANFD_STCMD_ENABLE_ISO;
if (!(priv->can.ctrlmode & (CAN_CTRLMODE_FD | CAN_CTRLMODE_FD_NON_ISO)))
if (!(priv->can.ctrlmode & CAN_CTRLMODE_FD))
stcmd |= IFI_CANFD_STCMD_DISABLE_CANFD;
priv->can.state = CAN_STATE_ERROR_ACTIVE;
ifi_canfd_irq_enable(ndev, 1);
/* Unlock, reset and enable the error counter. */
writel(IFI_CANFD_ERROR_CTR_UNLOCK_MAGIC,
priv->base + IFI_CANFD_ERROR_CTR);
writel(IFI_CANFD_ERROR_CTR_ER_RESET, priv->base + IFI_CANFD_ERROR_CTR);
writel(IFI_CANFD_ERROR_CTR_ER_ENABLE, priv->base + IFI_CANFD_ERROR_CTR);
/* Enable controller */
writel(stcmd, priv->base + IFI_CANFD_STCMD);
}
@ -685,6 +761,10 @@ static void ifi_canfd_stop(struct net_device *ndev)
{
struct ifi_canfd_priv *priv = netdev_priv(ndev);
/* Reset and disable the error counter. */
writel(IFI_CANFD_ERROR_CTR_ER_RESET, priv->base + IFI_CANFD_ERROR_CTR);
writel(0, priv->base + IFI_CANFD_ERROR_CTR);
/* Reset the IP */
writel(IFI_CANFD_STCMD_HARDRESET, priv->base + IFI_CANFD_STCMD);
@ -877,7 +957,7 @@ static int ifi_canfd_plat_probe(struct platform_device *pdev)
priv->can.clock.freq = readl(addr + IFI_CANFD_CANCLOCK);
priv->can.bittiming_const = &ifi_canfd_bittiming_const;
priv->can.data_bittiming_const = &ifi_canfd_data_bittiming_const;
priv->can.data_bittiming_const = &ifi_canfd_bittiming_const;
priv->can.do_set_mode = ifi_canfd_set_mode;
priv->can.do_get_berr_counter = ifi_canfd_get_berr_counter;
@ -888,7 +968,8 @@ static int ifi_canfd_plat_probe(struct platform_device *pdev)
priv->can.ctrlmode_supported = CAN_CTRLMODE_LOOPBACK |
CAN_CTRLMODE_LISTENONLY |
CAN_CTRLMODE_FD |
CAN_CTRLMODE_FD_NON_ISO;
CAN_CTRLMODE_FD_NON_ISO |
CAN_CTRLMODE_BERR_REPORTING;
platform_set_drvdata(pdev, ndev);
SET_NETDEV_DEV(ndev, dev);

104
drivers/net/can/janz-ican3.c
View File

@ -84,6 +84,7 @@
#define MSG_COFFREQ 0x42
#define MSG_CONREQ 0x43
#define MSG_CCONFREQ 0x47
#define MSG_NMTS 0xb0
#define MSG_LMTS 0xb4
/*
@ -130,6 +131,22 @@
#define ICAN3_CAN_DLC_MASK 0x0f
/* Janz ICAN3 NMTS subtypes */
#define NMTS_CREATE_NODE_REQ 0x0
#define NMTS_SLAVE_STATE_IND 0x8
#define NMTS_SLAVE_EVENT_IND 0x9
/* Janz ICAN3 LMTS subtypes */
#define LMTS_BUSON_REQ 0x0
#define LMTS_BUSOFF_REQ 0x1
#define LMTS_CAN_CONF_REQ 0x2
/* Janz ICAN3 NMTS Event indications */
#define NE_LOCAL_OCCURRED 0x3
#define NE_LOCAL_RESOLVED 0x2
#define NE_REMOTE_OCCURRED 0xc
#define NE_REMOTE_RESOLVED 0x8
/*
* SJA1000 Status and Error Register Definitions
*
@ -800,21 +817,41 @@ static int ican3_set_bus_state(struct ican3_dev *mod, bool on)
return ican3_send_msg(mod, &msg);
} else if (mod->fwtype == ICAN3_FWTYPE_CAL_CANOPEN) {
/* bittiming + can-on/off request */
memset(&msg, 0, sizeof(msg));
msg.spec = MSG_LMTS;
if (on) {
msg.len = cpu_to_le16(4);
msg.data[0] = 0;
msg.data[0] = LMTS_BUSON_REQ;
msg.data[1] = 0;
msg.data[2] = btr0;
msg.data[3] = btr1;
} else {
msg.len = cpu_to_le16(2);
msg.data[0] = 1;
msg.data[0] = LMTS_BUSOFF_REQ;
msg.data[1] = 0;
}
res = ican3_send_msg(mod, &msg);
if (res)
return res;
return ican3_send_msg(mod, &msg);
if (on) {
/* create NMT Slave Node for error processing
* class 2 (with error capability, see CiA/DS203-1)
* id 1
* name locnod1 (must be exactly 7 bytes)
*/
memset(&msg, 0, sizeof(msg));
msg.spec = MSG_NMTS;
msg.len = cpu_to_le16(11);
msg.data[0] = NMTS_CREATE_NODE_REQ;
msg.data[1] = 0;
msg.data[2] = 2; /* node class */
msg.data[3] = 1; /* node id */
strcpy(msg.data + 4, "locnod1"); /* node name */
return ican3_send_msg(mod, &msg);
}
return 0;
}
return -ENOTSUPP;
}
@ -849,12 +886,23 @@ static int ican3_set_buserror(struct ican3_dev *mod, u8 quota)
{
struct ican3_msg msg;
memset(&msg, 0, sizeof(msg));
msg.spec = MSG_CCONFREQ;
msg.len = cpu_to_le16(2);
msg.data[0] = 0x00;
msg.data[1] = quota;
if (mod->fwtype == ICAN3_FWTYPE_ICANOS) {
memset(&msg, 0, sizeof(msg));
msg.spec = MSG_CCONFREQ;
msg.len = cpu_to_le16(2);
msg.data[0] = 0x00;
msg.data[1] = quota;
} else if (mod->fwtype == ICAN3_FWTYPE_CAL_CANOPEN) {
memset(&msg, 0, sizeof(msg));
msg.spec = MSG_LMTS;
msg.len = cpu_to_le16(4);
msg.data[0] = LMTS_CAN_CONF_REQ;
msg.data[1] = 0x00;
msg.data[2] = 0x00;
msg.data[3] = quota;
} else {
return -ENOTSUPP;
}
return ican3_send_msg(mod, &msg);
}
@ -1150,6 +1198,41 @@ static void ican3_handle_inquiry(struct ican3_dev *mod, struct ican3_msg *msg)
}
}
/* Handle NMTS Slave Event Indication Messages from the firmware */
static void ican3_handle_nmtsind(struct ican3_dev *mod, struct ican3_msg *msg)
{
u16 subspec;
subspec = msg->data[0] + msg->data[1] * 0x100;
if (subspec == NMTS_SLAVE_EVENT_IND) {
switch (msg->data[2]) {
case NE_LOCAL_OCCURRED:
case NE_LOCAL_RESOLVED:
/* now follows the same message as Raw ICANOS CEVTIND
* shift the data at the same place and call this method
*/
le16_add_cpu(&msg->len, -3);
memmove(msg->data, msg->data + 3, le16_to_cpu(msg->len));
ican3_handle_cevtind(mod, msg);
break;
case NE_REMOTE_OCCURRED:
case NE_REMOTE_RESOLVED:
/* should not occurre, ignore */
break;
default:
netdev_warn(mod->ndev, "unknown NMTS event indication %x\n",
msg->data[2]);
break;
}
} else if (subspec == NMTS_SLAVE_STATE_IND) {
/* ignore state indications */
} else {
netdev_warn(mod->ndev, "unhandled NMTS indication %x\n",
subspec);
return;
}
}
static void ican3_handle_unknown_message(struct ican3_dev *mod,
struct ican3_msg *msg)
{
@ -1179,6 +1262,9 @@ static void ican3_handle_message(struct ican3_dev *mod, struct ican3_msg *msg)
case MSG_INQUIRY:
ican3_handle_inquiry(mod, msg);
break;
case MSG_NMTS:
ican3_handle_nmtsind(mod, msg);
break;
default:
ican3_handle_unknown_message(mod, msg);
break;

2
drivers/net/can/m_can/m_can.c
View File

@ -955,7 +955,7 @@ static struct net_device *alloc_m_can_dev(void)
priv->can.do_get_berr_counter = m_can_get_berr_counter;
/* CAN_CTRLMODE_FD_NON_ISO is fixed with M_CAN IP v3.0.1 */
priv->can.ctrlmode = CAN_CTRLMODE_FD_NON_ISO;
can_set_static_ctrlmode(dev, CAN_CTRLMODE_FD_NON_ISO);
/* CAN_CTRLMODE_FD_NON_ISO can not be changed with M_CAN IP v3.0.1 */
priv->can.ctrlmode_supported = CAN_CTRLMODE_LOOPBACK |

64
drivers/net/can/sja1000/plx_pci.c
View File

@ -39,6 +39,7 @@ MODULE_DESCRIPTION("Socket-CAN driver for PLX90xx PCI-bridge cards with "
MODULE_SUPPORTED_DEVICE("Adlink PCI-7841/cPCI-7841, "
"Adlink PCI-7841/cPCI-7841 SE, "
"Marathon CAN-bus-PCI, "
"Marathon CAN-bus-PCIe, "
"TEWS TECHNOLOGIES TPMC810, "
"esd CAN-PCI/CPCI/PCI104/200, "
"esd CAN-PCI/PMC/266, "
@ -133,6 +134,7 @@ struct plx_pci_card {
#define IXXAT_PCI_SUB_SYS_ID 0x2540
#define MARATHON_PCI_DEVICE_ID 0x2715
#define MARATHON_PCIE_DEVICE_ID 0x3432
#define TEWS_PCI_VENDOR_ID 0x1498
#define TEWS_PCI_DEVICE_ID_TMPC810 0x032A
@ -141,8 +143,9 @@ struct plx_pci_card {
#define CTI_PCI_DEVICE_ID_CRG001 0x0900
static void plx_pci_reset_common(struct pci_dev *pdev);
static void plx_pci_reset_marathon(struct pci_dev *pdev);
static void plx9056_pci_reset_common(struct pci_dev *pdev);
static void plx_pci_reset_marathon_pci(struct pci_dev *pdev);
static void plx_pci_reset_marathon_pcie(struct pci_dev *pdev);
struct plx_pci_channel_map {
u32 bar;
@ -215,14 +218,22 @@ static struct plx_pci_card_info plx_pci_card_info_ixxat = {
/* based on PLX9050 */
};
static struct plx_pci_card_info plx_pci_card_info_marathon = {
static struct plx_pci_card_info plx_pci_card_info_marathon_pci = {
"Marathon CAN-bus-PCI", 2,
PLX_PCI_CAN_CLOCK, PLX_PCI_OCR, PLX_PCI_CDR,
{0, 0x00, 0x00}, { {2, 0x00, 0x00}, {4, 0x00, 0x00} },
&plx_pci_reset_marathon
&plx_pci_reset_marathon_pci
/* based on PLX9052 */
};
static struct plx_pci_card_info plx_pci_card_info_marathon_pcie = {
"Marathon CAN-bus-PCIe", 2,
PLX_PCI_CAN_CLOCK, PLX_PCI_OCR, PLX_PCI_CDR,
{0, 0x00, 0x00}, { {2, 0x00, 0x00}, {3, 0x80, 0x00} },
&plx_pci_reset_marathon_pcie
/* based on PEX8311 */
};
static struct plx_pci_card_info plx_pci_card_info_tews = {
"TEWS TECHNOLOGIES TPMC810", 2,
PLX_PCI_CAN_CLOCK, PLX_PCI_OCR, PLX_PCI_CDR,
@ -316,7 +327,14 @@ static const struct pci_device_id plx_pci_tbl[] = {
PCI_VENDOR_ID_PLX, MARATHON_PCI_DEVICE_ID,
PCI_ANY_ID, PCI_ANY_ID,
0, 0,
(kernel_ulong_t)&plx_pci_card_info_marathon
(kernel_ulong_t)&plx_pci_card_info_marathon_pci
},
{
/* Marathon CAN-bus-PCIe card */
PCI_VENDOR_ID_PLX, MARATHON_PCIE_DEVICE_ID,
PCI_ANY_ID, PCI_ANY_ID,
0, 0,
(kernel_ulong_t)&plx_pci_card_info_marathon_pcie
},
{
/* TEWS TECHNOLOGIES TPMC810 card */
@ -437,8 +455,8 @@ static void plx9056_pci_reset_common(struct pci_dev *pdev)
iowrite32(cntrl, card->conf_addr + PLX9056_CNTRL);
};
/* Special reset function for Marathon card */
static void plx_pci_reset_marathon(struct pci_dev *pdev)
/* Special reset function for Marathon CAN-bus-PCI card */
static void plx_pci_reset_marathon_pci(struct pci_dev *pdev)
{
void __iomem *reset_addr;
int i;
@ -460,6 +478,34 @@ static void plx_pci_reset_marathon(struct pci_dev *pdev)
}
}
/* Special reset function for Marathon CAN-bus-PCIe card */
static void plx_pci_reset_marathon_pcie(struct pci_dev *pdev)
{
void __iomem *addr;
void __iomem *reset_addr;
int i;
plx9056_pci_reset_common(pdev);
for (i = 0; i < 2; i++) {
struct plx_pci_channel_map *chan_map =
&plx_pci_card_info_marathon_pcie.chan_map_tbl[i];
addr = pci_iomap(pdev, chan_map->bar, chan_map->size);
if (!addr) {
dev_err(&pdev->dev, "Failed to remap reset "
"space %d (BAR%d)\n", i, chan_map->bar);
} else {
/* reset the SJA1000 chip */
#define MARATHON_PCIE_RESET_OFFSET 32
reset_addr = addr + chan_map->offset +
MARATHON_PCIE_RESET_OFFSET;
iowrite8(0x1, reset_addr);
udelay(100);
pci_iounmap(pdev, addr);
}
}
}
static void plx_pci_del_card(struct pci_dev *pdev)
{
struct plx_pci_card *card = pci_get_drvdata(pdev);
@ -486,7 +532,8 @@ static void plx_pci_del_card(struct pci_dev *pdev)
* Disable interrupts from PCI-card and disable local
* interrupts
*/
if (pdev->device != PCI_DEVICE_ID_PLX_9056)
if (pdev->device != PCI_DEVICE_ID_PLX_9056 &&
pdev->device != MARATHON_PCIE_DEVICE_ID)
iowrite32(0x0, card->conf_addr + PLX_INTCSR);
else
iowrite32(0x0, card->conf_addr + PLX9056_INTCSR);
@ -619,7 +666,8 @@ static int plx_pci_add_card(struct pci_dev *pdev,
* Enable interrupts from PCI-card (PLX90xx) and enable Local_1,
* Local_2 interrupts from the SJA1000 chips
*/
if (pdev->device != PCI_DEVICE_ID_PLX_9056) {
if (pdev->device != PCI_DEVICE_ID_PLX_9056 &&
pdev->device != MARATHON_PCIE_DEVICE_ID) {
val = ioread32(card->conf_addr + PLX_INTCSR);
if (pdev->subsystem_vendor == PCI_VENDOR_ID_ESDGMBH)
val |= PLX_LINT1_EN | PLX_PCI_INT_EN;

6
drivers/net/can/sja1000/sja1000.c
View File

@ -438,6 +438,7 @@ static int sja1000_err(struct net_device *dev, uint8_t isrc, uint8_t status)
cf->can_id |= CAN_ERR_PROT | CAN_ERR_BUSERROR;
/* set error type */
switch (ecc & ECC_MASK) {
case ECC_BIT:
cf->data[2] |= CAN_ERR_PROT_BIT;
@ -449,9 +450,12 @@ static int sja1000_err(struct net_device *dev, uint8_t isrc, uint8_t status)
cf->data[2] |= CAN_ERR_PROT_STUFF;
break;
default:
cf->data[3] = ecc & ECC_SEG;
break;
}
/* set error location */
cf->data[3] = ecc & ECC_SEG;
/* Error occurred during transmission? */
if ((ecc & ECC_DIR) == 0)
cf->data[2] |= CAN_ERR_PROT_TX;

3
drivers/net/can/spi/mcp251x.c
View File

@ -961,7 +961,8 @@ static int mcp251x_open(struct net_device *net)
goto open_unlock;
}
priv->wq = create_freezable_workqueue("mcp251x_wq");
priv->wq = alloc_workqueue("mcp251x_wq", WQ_FREEZABLE | WQ_MEM_RECLAIM,
0);
INIT_WORK(&priv->tx_work, mcp251x_tx_work_handler);
INIT_WORK(&priv->restart_work, mcp251x_restart_work_handler);

3
drivers/net/can/usb/gs_usb.c
View File

@ -950,7 +950,8 @@ static void gs_usb_disconnect(struct usb_interface *intf)
}
static const struct usb_device_id gs_usb_table[] = {
{USB_DEVICE(USB_GSUSB_1_VENDOR_ID, USB_GSUSB_1_PRODUCT_ID)},
{ USB_DEVICE_INTERFACE_NUMBER(USB_GSUSB_1_VENDOR_ID,
USB_GSUSB_1_PRODUCT_ID, 0) },
{} /* Terminating entry */
};

22
include/linux/can/dev.h
View File

@ -40,8 +40,11 @@ struct can_priv {
struct can_clock clock;
enum can_state state;
u32 ctrlmode;
u32 ctrlmode_supported;
/* CAN controller features - see include/uapi/linux/can/netlink.h */
u32 ctrlmode; /* current options setting */
u32 ctrlmode_supported; /* options that can be modified by netlink */
u32 ctrlmode_static; /* static enabled options for driver/hardware */
int restart_ms;
struct timer_list restart_timer;
@ -108,6 +111,21 @@ static inline bool can_is_canfd_skb(const struct sk_buff *skb)
return skb->len == CANFD_MTU;
}
/* helper to define static CAN controller features at device creation time */
static inline void can_set_static_ctrlmode(struct net_device *dev,
u32 static_mode)
{
struct can_priv *priv = netdev_priv(dev);
/* alloc_candev() succeeded => netdev_priv() is valid at this point */
priv->ctrlmode = static_mode;
priv->ctrlmode_static = static_mode;
/* override MTU which was set by default in can_setup()? */
if (static_mode & CAN_CTRLMODE_FD)
dev->mtu = CANFD_MTU;
}
/* get data length from can_dlc with sanitized can_dlc */
u8 can_dlc2len(u8 can_dlc);