693 lines
18 KiB
C
693 lines
18 KiB
C
/*
|
|
* Copyright (C) 2008-2010
|
|
*
|
|
* - Kurt Van Dijck, EIA Electronics
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the version 2 of the GNU General Public License
|
|
* as published by the Free Software Foundation
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
#include <linux/firmware.h>
|
|
#include <linux/sched.h>
|
|
#include <asm/div64.h>
|
|
#include <asm/io.h>
|
|
|
|
#include "softing.h"
|
|
|
|
/*
|
|
* low level DPRAM command.
|
|
* Make sure that card->dpram[DPRAM_FCT_HOST] is preset
|
|
*/
|
|
static int _softing_fct_cmd(struct softing *card, int16_t cmd, uint16_t vector,
|
|
const char *msg)
|
|
{
|
|
int ret;
|
|
unsigned long stamp;
|
|
|
|
iowrite16(cmd, &card->dpram[DPRAM_FCT_PARAM]);
|
|
iowrite8(vector >> 8, &card->dpram[DPRAM_FCT_HOST + 1]);
|
|
iowrite8(vector, &card->dpram[DPRAM_FCT_HOST]);
|
|
/* be sure to flush this to the card */
|
|
wmb();
|
|
stamp = jiffies + 1 * HZ;
|
|
/* wait for card */
|
|
do {
|
|
/* DPRAM_FCT_HOST is _not_ aligned */
|
|
ret = ioread8(&card->dpram[DPRAM_FCT_HOST]) +
|
|
(ioread8(&card->dpram[DPRAM_FCT_HOST + 1]) << 8);
|
|
/* don't have any cached variables */
|
|
rmb();
|
|
if (ret == RES_OK)
|
|
/* read return-value now */
|
|
return ioread16(&card->dpram[DPRAM_FCT_RESULT]);
|
|
|
|
if ((ret != vector) || time_after(jiffies, stamp))
|
|
break;
|
|
/* process context => relax */
|
|
usleep_range(500, 10000);
|
|
} while (1);
|
|
|
|
ret = (ret == RES_NONE) ? -ETIMEDOUT : -ECANCELED;
|
|
dev_alert(&card->pdev->dev, "firmware %s failed (%i)\n", msg, ret);
|
|
return ret;
|
|
}
|
|
|
|
static int softing_fct_cmd(struct softing *card, int16_t cmd, const char *msg)
|
|
{
|
|
int ret;
|
|
|
|
ret = _softing_fct_cmd(card, cmd, 0, msg);
|
|
if (ret > 0) {
|
|
dev_alert(&card->pdev->dev, "%s returned %u\n", msg, ret);
|
|
ret = -EIO;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int softing_bootloader_command(struct softing *card, int16_t cmd,
|
|
const char *msg)
|
|
{
|
|
int ret;
|
|
unsigned long stamp;
|
|
|
|
iowrite16(RES_NONE, &card->dpram[DPRAM_RECEIPT]);
|
|
iowrite16(cmd, &card->dpram[DPRAM_COMMAND]);
|
|
/* be sure to flush this to the card */
|
|
wmb();
|
|
stamp = jiffies + 3 * HZ;
|
|
/* wait for card */
|
|
do {
|
|
ret = ioread16(&card->dpram[DPRAM_RECEIPT]);
|
|
/* don't have any cached variables */
|
|
rmb();
|
|
if (ret == RES_OK)
|
|
return 0;
|
|
if (time_after(jiffies, stamp))
|
|
break;
|
|
/* process context => relax */
|
|
usleep_range(500, 10000);
|
|
} while (!signal_pending(current));
|
|
|
|
ret = (ret == RES_NONE) ? -ETIMEDOUT : -ECANCELED;
|
|
dev_alert(&card->pdev->dev, "bootloader %s failed (%i)\n", msg, ret);
|
|
return ret;
|
|
}
|
|
|
|
static int fw_parse(const uint8_t **pmem, uint16_t *ptype, uint32_t *paddr,
|
|
uint16_t *plen, const uint8_t **pdat)
|
|
{
|
|
uint16_t checksum[2];
|
|
const uint8_t *mem;
|
|
const uint8_t *end;
|
|
|
|
/*
|
|
* firmware records are a binary, unaligned stream composed of:
|
|
* uint16_t type;
|
|
* uint32_t addr;
|
|
* uint16_t len;
|
|
* uint8_t dat[len];
|
|
* uint16_t checksum;
|
|
* all values in little endian.
|
|
* We could define a struct for this, with __attribute__((packed)),
|
|
* but would that solve the alignment in _all_ cases (cfr. the
|
|
* struct itself may be an odd address)?
|
|
*
|
|
* I chose to use leXX_to_cpup() since this solves both
|
|
* endianness & alignment.
|
|
*/
|
|
mem = *pmem;
|
|
*ptype = le16_to_cpup((void *)&mem[0]);
|
|
*paddr = le32_to_cpup((void *)&mem[2]);
|
|
*plen = le16_to_cpup((void *)&mem[6]);
|
|
*pdat = &mem[8];
|
|
/* verify checksum */
|
|
end = &mem[8 + *plen];
|
|
checksum[0] = le16_to_cpup((void *)end);
|
|
for (checksum[1] = 0; mem < end; ++mem)
|
|
checksum[1] += *mem;
|
|
if (checksum[0] != checksum[1])
|
|
return -EINVAL;
|
|
/* increment */
|
|
*pmem += 10 + *plen;
|
|
return 0;
|
|
}
|
|
|
|
int softing_load_fw(const char *file, struct softing *card,
|
|
__iomem uint8_t *dpram, unsigned int size, int offset)
|
|
{
|
|
const struct firmware *fw;
|
|
int ret;
|
|
const uint8_t *mem, *end, *dat;
|
|
uint16_t type, len;
|
|
uint32_t addr;
|
|
uint8_t *buf = NULL;
|
|
int buflen = 0;
|
|
int8_t type_end = 0;
|
|
|
|
ret = request_firmware(&fw, file, &card->pdev->dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
dev_dbg(&card->pdev->dev, "%s, firmware(%s) got %u bytes"
|
|
", offset %c0x%04x\n",
|
|
card->pdat->name, file, (unsigned int)fw->size,
|
|
(offset >= 0) ? '+' : '-', (unsigned int)abs(offset));
|
|
/* parse the firmware */
|
|
mem = fw->data;
|
|
end = &mem[fw->size];
|
|
/* look for header record */
|
|
ret = fw_parse(&mem, &type, &addr, &len, &dat);
|
|
if (ret < 0)
|
|
goto failed;
|
|
if (type != 0xffff)
|
|
goto failed;
|
|
if (strncmp("Structured Binary Format, Softing GmbH" , dat, len)) {
|
|
ret = -EINVAL;
|
|
goto failed;
|
|
}
|
|
/* ok, we had a header */
|
|
while (mem < end) {
|
|
ret = fw_parse(&mem, &type, &addr, &len, &dat);
|
|
if (ret < 0)
|
|
goto failed;
|
|
if (type == 3) {
|
|
/* start address, not used here */
|
|
continue;
|
|
} else if (type == 1) {
|
|
/* eof */
|
|
type_end = 1;
|
|
break;
|
|
} else if (type != 0) {
|
|
ret = -EINVAL;
|
|
goto failed;
|
|
}
|
|
|
|
if ((addr + len + offset) > size)
|
|
goto failed;
|
|
memcpy_toio(&dpram[addr + offset], dat, len);
|
|
/* be sure to flush caches from IO space */
|
|
mb();
|
|
if (len > buflen) {
|
|
/* align buflen */
|
|
buflen = (len + (1024-1)) & ~(1024-1);
|
|
buf = krealloc(buf, buflen, GFP_KERNEL);
|
|
if (!buf) {
|
|
ret = -ENOMEM;
|
|
goto failed;
|
|
}
|
|
}
|
|
/* verify record data */
|
|
memcpy_fromio(buf, &dpram[addr + offset], len);
|
|
if (memcmp(buf, dat, len)) {
|
|
/* is not ok */
|
|
dev_alert(&card->pdev->dev, "DPRAM readback failed\n");
|
|
ret = -EIO;
|
|
goto failed;
|
|
}
|
|
}
|
|
if (!type_end)
|
|
/* no end record seen */
|
|
goto failed;
|
|
ret = 0;
|
|
failed:
|
|
kfree(buf);
|
|
release_firmware(fw);
|
|
if (ret < 0)
|
|
dev_info(&card->pdev->dev, "firmware %s failed\n", file);
|
|
return ret;
|
|
}
|
|
|
|
int softing_load_app_fw(const char *file, struct softing *card)
|
|
{
|
|
const struct firmware *fw;
|
|
const uint8_t *mem, *end, *dat;
|
|
int ret, j;
|
|
uint16_t type, len;
|
|
uint32_t addr, start_addr = 0;
|
|
unsigned int sum, rx_sum;
|
|
int8_t type_end = 0, type_entrypoint = 0;
|
|
|
|
ret = request_firmware(&fw, file, &card->pdev->dev);
|
|
if (ret) {
|
|
dev_alert(&card->pdev->dev, "request_firmware(%s) got %i\n",
|
|
file, ret);
|
|
return ret;
|
|
}
|
|
dev_dbg(&card->pdev->dev, "firmware(%s) got %lu bytes\n",
|
|
file, (unsigned long)fw->size);
|
|
/* parse the firmware */
|
|
mem = fw->data;
|
|
end = &mem[fw->size];
|
|
/* look for header record */
|
|
ret = fw_parse(&mem, &type, &addr, &len, &dat);
|
|
if (ret)
|
|
goto failed;
|
|
ret = -EINVAL;
|
|
if (type != 0xffff) {
|
|
dev_alert(&card->pdev->dev, "firmware starts with type 0x%x\n",
|
|
type);
|
|
goto failed;
|
|
}
|
|
if (strncmp("Structured Binary Format, Softing GmbH", dat, len)) {
|
|
dev_alert(&card->pdev->dev, "firmware string '%.*s' fault\n",
|
|
len, dat);
|
|
goto failed;
|
|
}
|
|
/* ok, we had a header */
|
|
while (mem < end) {
|
|
ret = fw_parse(&mem, &type, &addr, &len, &dat);
|
|
if (ret)
|
|
goto failed;
|
|
|
|
if (type == 3) {
|
|
/* start address */
|
|
start_addr = addr;
|
|
type_entrypoint = 1;
|
|
continue;
|
|
} else if (type == 1) {
|
|
/* eof */
|
|
type_end = 1;
|
|
break;
|
|
} else if (type != 0) {
|
|
dev_alert(&card->pdev->dev,
|
|
"unknown record type 0x%04x\n", type);
|
|
ret = -EINVAL;
|
|
goto failed;
|
|
}
|
|
|
|
/* regualar data */
|
|
for (sum = 0, j = 0; j < len; ++j)
|
|
sum += dat[j];
|
|
/* work in 16bit (target) */
|
|
sum &= 0xffff;
|
|
|
|
memcpy_toio(&card->dpram[card->pdat->app.offs], dat, len);
|
|
iowrite32(card->pdat->app.offs + card->pdat->app.addr,
|
|
&card->dpram[DPRAM_COMMAND + 2]);
|
|
iowrite32(addr, &card->dpram[DPRAM_COMMAND + 6]);
|
|
iowrite16(len, &card->dpram[DPRAM_COMMAND + 10]);
|
|
iowrite8(1, &card->dpram[DPRAM_COMMAND + 12]);
|
|
ret = softing_bootloader_command(card, 1, "loading app.");
|
|
if (ret < 0)
|
|
goto failed;
|
|
/* verify checksum */
|
|
rx_sum = ioread16(&card->dpram[DPRAM_RECEIPT + 2]);
|
|
if (rx_sum != sum) {
|
|
dev_alert(&card->pdev->dev, "SRAM seems to be damaged"
|
|
", wanted 0x%04x, got 0x%04x\n", sum, rx_sum);
|
|
ret = -EIO;
|
|
goto failed;
|
|
}
|
|
}
|
|
if (!type_end || !type_entrypoint)
|
|
goto failed;
|
|
/* start application in card */
|
|
iowrite32(start_addr, &card->dpram[DPRAM_COMMAND + 2]);
|
|
iowrite8(1, &card->dpram[DPRAM_COMMAND + 6]);
|
|
ret = softing_bootloader_command(card, 3, "start app.");
|
|
if (ret < 0)
|
|
goto failed;
|
|
ret = 0;
|
|
failed:
|
|
release_firmware(fw);
|
|
if (ret < 0)
|
|
dev_info(&card->pdev->dev, "firmware %s failed\n", file);
|
|
return ret;
|
|
}
|
|
|
|
static int softing_reset_chip(struct softing *card)
|
|
{
|
|
int ret;
|
|
|
|
do {
|
|
/* reset chip */
|
|
iowrite8(0, &card->dpram[DPRAM_RESET_RX_FIFO]);
|
|
iowrite8(0, &card->dpram[DPRAM_RESET_RX_FIFO+1]);
|
|
iowrite8(1, &card->dpram[DPRAM_RESET]);
|
|
iowrite8(0, &card->dpram[DPRAM_RESET+1]);
|
|
|
|
ret = softing_fct_cmd(card, 0, "reset_can");
|
|
if (!ret)
|
|
break;
|
|
if (signal_pending(current))
|
|
/* don't wait any longer */
|
|
break;
|
|
} while (1);
|
|
card->tx.pending = 0;
|
|
return ret;
|
|
}
|
|
|
|
int softing_chip_poweron(struct softing *card)
|
|
{
|
|
int ret;
|
|
/* sync */
|
|
ret = _softing_fct_cmd(card, 99, 0x55, "sync-a");
|
|
if (ret < 0)
|
|
goto failed;
|
|
|
|
ret = _softing_fct_cmd(card, 99, 0xaa, "sync-b");
|
|
if (ret < 0)
|
|
goto failed;
|
|
|
|
ret = softing_reset_chip(card);
|
|
if (ret < 0)
|
|
goto failed;
|
|
/* get_serial */
|
|
ret = softing_fct_cmd(card, 43, "get_serial_number");
|
|
if (ret < 0)
|
|
goto failed;
|
|
card->id.serial = ioread32(&card->dpram[DPRAM_FCT_PARAM]);
|
|
/* get_version */
|
|
ret = softing_fct_cmd(card, 12, "get_version");
|
|
if (ret < 0)
|
|
goto failed;
|
|
card->id.fw_version = ioread16(&card->dpram[DPRAM_FCT_PARAM + 2]);
|
|
card->id.hw_version = ioread16(&card->dpram[DPRAM_FCT_PARAM + 4]);
|
|
card->id.license = ioread16(&card->dpram[DPRAM_FCT_PARAM + 6]);
|
|
card->id.chip[0] = ioread16(&card->dpram[DPRAM_FCT_PARAM + 8]);
|
|
card->id.chip[1] = ioread16(&card->dpram[DPRAM_FCT_PARAM + 10]);
|
|
return 0;
|
|
failed:
|
|
return ret;
|
|
}
|
|
|
|
static void softing_initialize_timestamp(struct softing *card)
|
|
{
|
|
uint64_t ovf;
|
|
|
|
card->ts_ref = ktime_get();
|
|
|
|
/* 16MHz is the reference */
|
|
ovf = 0x100000000ULL * 16;
|
|
do_div(ovf, card->pdat->freq ?: 16);
|
|
|
|
card->ts_overflow = ktime_add_us(ktime_set(0, 0), ovf);
|
|
}
|
|
|
|
ktime_t softing_raw2ktime(struct softing *card, u32 raw)
|
|
{
|
|
uint64_t rawl;
|
|
ktime_t now, real_offset;
|
|
ktime_t target;
|
|
ktime_t tmp;
|
|
|
|
now = ktime_get();
|
|
real_offset = ktime_sub(ktime_get_real(), now);
|
|
|
|
/* find nsec from card */
|
|
rawl = raw * 16;
|
|
do_div(rawl, card->pdat->freq ?: 16);
|
|
target = ktime_add_us(card->ts_ref, rawl);
|
|
/* test for overflows */
|
|
tmp = ktime_add(target, card->ts_overflow);
|
|
while (unlikely(ktime_to_ns(tmp) > ktime_to_ns(now))) {
|
|
card->ts_ref = ktime_add(card->ts_ref, card->ts_overflow);
|
|
target = tmp;
|
|
tmp = ktime_add(target, card->ts_overflow);
|
|
}
|
|
return ktime_add(target, real_offset);
|
|
}
|
|
|
|
static inline int softing_error_reporting(struct net_device *netdev)
|
|
{
|
|
struct softing_priv *priv = netdev_priv(netdev);
|
|
|
|
return (priv->can.ctrlmode & CAN_CTRLMODE_BERR_REPORTING)
|
|
? 1 : 0;
|
|
}
|
|
|
|
int softing_startstop(struct net_device *dev, int up)
|
|
{
|
|
int ret;
|
|
struct softing *card;
|
|
struct softing_priv *priv;
|
|
struct net_device *netdev;
|
|
int bus_bitmask_start;
|
|
int j, error_reporting;
|
|
struct can_frame msg;
|
|
const struct can_bittiming *bt;
|
|
|
|
priv = netdev_priv(dev);
|
|
card = priv->card;
|
|
|
|
if (!card->fw.up)
|
|
return -EIO;
|
|
|
|
ret = mutex_lock_interruptible(&card->fw.lock);
|
|
if (ret)
|
|
return ret;
|
|
|
|
bus_bitmask_start = 0;
|
|
if (dev && up)
|
|
/* prepare to start this bus as well */
|
|
bus_bitmask_start |= (1 << priv->index);
|
|
/* bring netdevs down */
|
|
for (j = 0; j < ARRAY_SIZE(card->net); ++j) {
|
|
netdev = card->net[j];
|
|
if (!netdev)
|
|
continue;
|
|
priv = netdev_priv(netdev);
|
|
|
|
if (dev != netdev)
|
|
netif_stop_queue(netdev);
|
|
|
|
if (netif_running(netdev)) {
|
|
if (dev != netdev)
|
|
bus_bitmask_start |= (1 << j);
|
|
priv->tx.pending = 0;
|
|
priv->tx.echo_put = 0;
|
|
priv->tx.echo_get = 0;
|
|
/*
|
|
* this bus' may just have called open_candev()
|
|
* which is rather stupid to call close_candev()
|
|
* already
|
|
* but we may come here from busoff recovery too
|
|
* in which case the echo_skb _needs_ flushing too.
|
|
* just be sure to call open_candev() again
|
|
*/
|
|
close_candev(netdev);
|
|
}
|
|
priv->can.state = CAN_STATE_STOPPED;
|
|
}
|
|
card->tx.pending = 0;
|
|
|
|
softing_enable_irq(card, 0);
|
|
ret = softing_reset_chip(card);
|
|
if (ret)
|
|
goto failed;
|
|
if (!bus_bitmask_start)
|
|
/* no busses to be brought up */
|
|
goto card_done;
|
|
|
|
if ((bus_bitmask_start & 1) && (bus_bitmask_start & 2)
|
|
&& (softing_error_reporting(card->net[0])
|
|
!= softing_error_reporting(card->net[1]))) {
|
|
dev_alert(&card->pdev->dev,
|
|
"err_reporting flag differs for busses\n");
|
|
goto invalid;
|
|
}
|
|
error_reporting = 0;
|
|
if (bus_bitmask_start & 1) {
|
|
netdev = card->net[0];
|
|
priv = netdev_priv(netdev);
|
|
error_reporting += softing_error_reporting(netdev);
|
|
/* init chip 1 */
|
|
bt = &priv->can.bittiming;
|
|
iowrite16(bt->brp, &card->dpram[DPRAM_FCT_PARAM + 2]);
|
|
iowrite16(bt->sjw, &card->dpram[DPRAM_FCT_PARAM + 4]);
|
|
iowrite16(bt->phase_seg1 + bt->prop_seg,
|
|
&card->dpram[DPRAM_FCT_PARAM + 6]);
|
|
iowrite16(bt->phase_seg2, &card->dpram[DPRAM_FCT_PARAM + 8]);
|
|
iowrite16((priv->can.ctrlmode & CAN_CTRLMODE_3_SAMPLES) ? 1 : 0,
|
|
&card->dpram[DPRAM_FCT_PARAM + 10]);
|
|
ret = softing_fct_cmd(card, 1, "initialize_chip[0]");
|
|
if (ret < 0)
|
|
goto failed;
|
|
/* set mode */
|
|
iowrite16(0, &card->dpram[DPRAM_FCT_PARAM + 2]);
|
|
iowrite16(0, &card->dpram[DPRAM_FCT_PARAM + 4]);
|
|
ret = softing_fct_cmd(card, 3, "set_mode[0]");
|
|
if (ret < 0)
|
|
goto failed;
|
|
/* set filter */
|
|
/* 11bit id & mask */
|
|
iowrite16(0x0000, &card->dpram[DPRAM_FCT_PARAM + 2]);
|
|
iowrite16(0x07ff, &card->dpram[DPRAM_FCT_PARAM + 4]);
|
|
/* 29bit id.lo & mask.lo & id.hi & mask.hi */
|
|
iowrite16(0x0000, &card->dpram[DPRAM_FCT_PARAM + 6]);
|
|
iowrite16(0xffff, &card->dpram[DPRAM_FCT_PARAM + 8]);
|
|
iowrite16(0x0000, &card->dpram[DPRAM_FCT_PARAM + 10]);
|
|
iowrite16(0x1fff, &card->dpram[DPRAM_FCT_PARAM + 12]);
|
|
ret = softing_fct_cmd(card, 7, "set_filter[0]");
|
|
if (ret < 0)
|
|
goto failed;
|
|
/* set output control */
|
|
iowrite16(priv->output, &card->dpram[DPRAM_FCT_PARAM + 2]);
|
|
ret = softing_fct_cmd(card, 5, "set_output[0]");
|
|
if (ret < 0)
|
|
goto failed;
|
|
}
|
|
if (bus_bitmask_start & 2) {
|
|
netdev = card->net[1];
|
|
priv = netdev_priv(netdev);
|
|
error_reporting += softing_error_reporting(netdev);
|
|
/* init chip2 */
|
|
bt = &priv->can.bittiming;
|
|
iowrite16(bt->brp, &card->dpram[DPRAM_FCT_PARAM + 2]);
|
|
iowrite16(bt->sjw, &card->dpram[DPRAM_FCT_PARAM + 4]);
|
|
iowrite16(bt->phase_seg1 + bt->prop_seg,
|
|
&card->dpram[DPRAM_FCT_PARAM + 6]);
|
|
iowrite16(bt->phase_seg2, &card->dpram[DPRAM_FCT_PARAM + 8]);
|
|
iowrite16((priv->can.ctrlmode & CAN_CTRLMODE_3_SAMPLES) ? 1 : 0,
|
|
&card->dpram[DPRAM_FCT_PARAM + 10]);
|
|
ret = softing_fct_cmd(card, 2, "initialize_chip[1]");
|
|
if (ret < 0)
|
|
goto failed;
|
|
/* set mode2 */
|
|
iowrite16(0, &card->dpram[DPRAM_FCT_PARAM + 2]);
|
|
iowrite16(0, &card->dpram[DPRAM_FCT_PARAM + 4]);
|
|
ret = softing_fct_cmd(card, 4, "set_mode[1]");
|
|
if (ret < 0)
|
|
goto failed;
|
|
/* set filter2 */
|
|
/* 11bit id & mask */
|
|
iowrite16(0x0000, &card->dpram[DPRAM_FCT_PARAM + 2]);
|
|
iowrite16(0x07ff, &card->dpram[DPRAM_FCT_PARAM + 4]);
|
|
/* 29bit id.lo & mask.lo & id.hi & mask.hi */
|
|
iowrite16(0x0000, &card->dpram[DPRAM_FCT_PARAM + 6]);
|
|
iowrite16(0xffff, &card->dpram[DPRAM_FCT_PARAM + 8]);
|
|
iowrite16(0x0000, &card->dpram[DPRAM_FCT_PARAM + 10]);
|
|
iowrite16(0x1fff, &card->dpram[DPRAM_FCT_PARAM + 12]);
|
|
ret = softing_fct_cmd(card, 8, "set_filter[1]");
|
|
if (ret < 0)
|
|
goto failed;
|
|
/* set output control2 */
|
|
iowrite16(priv->output, &card->dpram[DPRAM_FCT_PARAM + 2]);
|
|
ret = softing_fct_cmd(card, 6, "set_output[1]");
|
|
if (ret < 0)
|
|
goto failed;
|
|
}
|
|
/* enable_error_frame */
|
|
/*
|
|
* Error reporting is switched off at the moment since
|
|
* the receiving of them is not yet 100% verified
|
|
* This should be enabled sooner or later
|
|
*
|
|
if (error_reporting) {
|
|
ret = softing_fct_cmd(card, 51, "enable_error_frame");
|
|
if (ret < 0)
|
|
goto failed;
|
|
}
|
|
*/
|
|
/* initialize interface */
|
|
iowrite16(1, &card->dpram[DPRAM_FCT_PARAM + 2]);
|
|
iowrite16(1, &card->dpram[DPRAM_FCT_PARAM + 4]);
|
|
iowrite16(1, &card->dpram[DPRAM_FCT_PARAM + 6]);
|
|
iowrite16(1, &card->dpram[DPRAM_FCT_PARAM + 8]);
|
|
iowrite16(1, &card->dpram[DPRAM_FCT_PARAM + 10]);
|
|
iowrite16(1, &card->dpram[DPRAM_FCT_PARAM + 12]);
|
|
iowrite16(1, &card->dpram[DPRAM_FCT_PARAM + 14]);
|
|
iowrite16(1, &card->dpram[DPRAM_FCT_PARAM + 16]);
|
|
iowrite16(1, &card->dpram[DPRAM_FCT_PARAM + 18]);
|
|
iowrite16(1, &card->dpram[DPRAM_FCT_PARAM + 20]);
|
|
ret = softing_fct_cmd(card, 17, "initialize_interface");
|
|
if (ret < 0)
|
|
goto failed;
|
|
/* enable_fifo */
|
|
ret = softing_fct_cmd(card, 36, "enable_fifo");
|
|
if (ret < 0)
|
|
goto failed;
|
|
/* enable fifo tx ack */
|
|
ret = softing_fct_cmd(card, 13, "fifo_tx_ack[0]");
|
|
if (ret < 0)
|
|
goto failed;
|
|
/* enable fifo tx ack2 */
|
|
ret = softing_fct_cmd(card, 14, "fifo_tx_ack[1]");
|
|
if (ret < 0)
|
|
goto failed;
|
|
/* start_chip */
|
|
ret = softing_fct_cmd(card, 11, "start_chip");
|
|
if (ret < 0)
|
|
goto failed;
|
|
iowrite8(0, &card->dpram[DPRAM_INFO_BUSSTATE]);
|
|
iowrite8(0, &card->dpram[DPRAM_INFO_BUSSTATE2]);
|
|
if (card->pdat->generation < 2) {
|
|
iowrite8(0, &card->dpram[DPRAM_V2_IRQ_TOHOST]);
|
|
/* flush the DPRAM caches */
|
|
wmb();
|
|
}
|
|
|
|
softing_initialize_timestamp(card);
|
|
|
|
/*
|
|
* do socketcan notifications/status changes
|
|
* from here, no errors should occur, or the failed: part
|
|
* must be reviewed
|
|
*/
|
|
memset(&msg, 0, sizeof(msg));
|
|
msg.can_id = CAN_ERR_FLAG | CAN_ERR_RESTARTED;
|
|
msg.can_dlc = CAN_ERR_DLC;
|
|
for (j = 0; j < ARRAY_SIZE(card->net); ++j) {
|
|
if (!(bus_bitmask_start & (1 << j)))
|
|
continue;
|
|
netdev = card->net[j];
|
|
if (!netdev)
|
|
continue;
|
|
priv = netdev_priv(netdev);
|
|
priv->can.state = CAN_STATE_ERROR_ACTIVE;
|
|
open_candev(netdev);
|
|
if (dev != netdev) {
|
|
/* notify other busses on the restart */
|
|
softing_netdev_rx(netdev, &msg, ktime_set(0, 0));
|
|
++priv->can.can_stats.restarts;
|
|
}
|
|
netif_wake_queue(netdev);
|
|
}
|
|
|
|
/* enable interrupts */
|
|
ret = softing_enable_irq(card, 1);
|
|
if (ret)
|
|
goto failed;
|
|
card_done:
|
|
mutex_unlock(&card->fw.lock);
|
|
return 0;
|
|
invalid:
|
|
ret = -EINVAL;
|
|
failed:
|
|
softing_enable_irq(card, 0);
|
|
softing_reset_chip(card);
|
|
mutex_unlock(&card->fw.lock);
|
|
/* bring all other interfaces down */
|
|
for (j = 0; j < ARRAY_SIZE(card->net); ++j) {
|
|
netdev = card->net[j];
|
|
if (!netdev)
|
|
continue;
|
|
dev_close(netdev);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
int softing_default_output(struct net_device *netdev)
|
|
{
|
|
struct softing_priv *priv = netdev_priv(netdev);
|
|
struct softing *card = priv->card;
|
|
|
|
switch (priv->chip) {
|
|
case 1000:
|
|
return (card->pdat->generation < 2) ? 0xfb : 0xfa;
|
|
case 5:
|
|
return 0x60;
|
|
default:
|
|
return 0x40;
|
|
}
|
|
}
|