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-rw-r--r--Documentation/devicetree/bindings/net/can/holt_hi311x.txt24
-rw-r--r--Documentation/devicetree/bindings/net/can/ti_hecc.txt32
-rw-r--r--drivers/net/can/spi/Kconfig6
-rw-r--r--drivers/net/can/spi/Makefile1
-rw-r--r--drivers/net/can/spi/hi311x.c1076
-rw-r--r--drivers/net/can/ti_hecc.c170
-rw-r--r--include/linux/can/core.h7
-rw-r--r--include/linux/can/platform/ti_hecc.h44
-rw-r--r--include/net/net_namespace.h4
-rw-r--r--include/net/netns/can.h31
-rw-r--r--net/can/af_can.c122
-rw-r--r--net/can/af_can.h4
-rw-r--r--net/can/bcm.c13
-rw-r--r--net/can/gw.c4
-rw-r--r--net/can/proc.c144
-rw-r--r--net/can/raw.c92
16 files changed, 1469 insertions, 305 deletions
diff --git a/Documentation/devicetree/bindings/net/can/holt_hi311x.txt b/Documentation/devicetree/bindings/net/can/holt_hi311x.txt
new file mode 100644
index 000000000000..23aa94eab207
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/can/holt_hi311x.txt
@@ -0,0 +1,24 @@
+* Holt HI-311X stand-alone CAN controller device tree bindings
+
+Required properties:
+ - compatible: Should be one of the following:
+ - "holt,hi3110" for HI-3110
+ - reg: SPI chip select.
+ - clocks: The clock feeding the CAN controller.
+ - interrupt-parent: The parent interrupt controller.
+ - interrupts: Should contain IRQ line for the CAN controller.
+
+Optional properties:
+ - vdd-supply: Regulator that powers the CAN controller.
+ - xceiver-supply: Regulator that powers the CAN transceiver.
+
+Example:
+ can0: can@1 {
+ compatible = "holt,hi3110";
+ reg = <1>;
+ clocks = <&clk32m>;
+ interrupt-parent = <&gpio4>;
+ interrupts = <13 IRQ_TYPE_EDGE_RISING>;
+ vdd-supply = <&reg5v0>;
+ xceiver-supply = <&reg5v0>;
+ };
diff --git a/Documentation/devicetree/bindings/net/can/ti_hecc.txt b/Documentation/devicetree/bindings/net/can/ti_hecc.txt
new file mode 100644
index 000000000000..e0f0a7cfe329
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/can/ti_hecc.txt
@@ -0,0 +1,32 @@
+Texas Instruments High End CAN Controller (HECC)
+================================================
+
+This file provides information, what the device node
+for the hecc interface contains.
+
+Required properties:
+- compatible: "ti,am3517-hecc"
+- reg: addresses and lengths of the register spaces for 'hecc', 'hecc-ram'
+ and 'mbx'
+- reg-names :"hecc", "hecc-ram", "mbx"
+- interrupts: interrupt mapping for the hecc interrupts sources
+- clocks: clock phandles (see clock bindings for details)
+
+Optional properties:
+- ti,use-hecc1int: if provided configures HECC to produce all interrupts
+ on HECC1INT interrupt line. By default HECC0INT interrupt
+ line will be used.
+- xceiver-supply: regulator that powers the CAN transceiver
+
+Example:
+
+For am3517evm board:
+ hecc: can@5c050000 {
+ compatible = "ti,am3517-hecc";
+ reg = <0x5c050000 0x80>,
+ <0x5c053000 0x180>,
+ <0x5c052000 0x200>;
+ reg-names = "hecc", "hecc-ram", "mbx";
+ interrupts = <24>;
+ clocks = <&hecc_ck>;
+ };
diff --git a/drivers/net/can/spi/Kconfig b/drivers/net/can/spi/Kconfig
index 148cae5871a6..8f2e0dd7b756 100644
--- a/drivers/net/can/spi/Kconfig
+++ b/drivers/net/can/spi/Kconfig
@@ -1,6 +1,12 @@
menu "CAN SPI interfaces"
depends on SPI
+config CAN_HI311X
+ tristate "Holt HI311x SPI CAN controllers"
+ depends on CAN_DEV && SPI && HAS_DMA
+ ---help---
+ Driver for the Holt HI311x SPI CAN controllers.
+
config CAN_MCP251X
tristate "Microchip MCP251x SPI CAN controllers"
depends on HAS_DMA
diff --git a/drivers/net/can/spi/Makefile b/drivers/net/can/spi/Makefile
index 0e86040cdd8c..f59fa3731073 100644
--- a/drivers/net/can/spi/Makefile
+++ b/drivers/net/can/spi/Makefile
@@ -3,4 +3,5 @@
#
+obj-$(CONFIG_CAN_HI311X) += hi311x.o
obj-$(CONFIG_CAN_MCP251X) += mcp251x.o
diff --git a/drivers/net/can/spi/hi311x.c b/drivers/net/can/spi/hi311x.c
new file mode 100644
index 000000000000..5590c559a8ca
--- /dev/null
+++ b/drivers/net/can/spi/hi311x.c
@@ -0,0 +1,1076 @@
+/* CAN bus driver for Holt HI3110 CAN Controller with SPI Interface
+ *
+ * Copyright(C) Timesys Corporation 2016
+ *
+ * Based on Microchip 251x CAN Controller (mcp251x) Linux kernel driver
+ * Copyright 2009 Christian Pellegrin EVOL S.r.l.
+ * Copyright 2007 Raymarine UK, Ltd. All Rights Reserved.
+ * Copyright 2006 Arcom Control Systems Ltd.
+ *
+ * Based on CAN bus driver for the CCAN controller written by
+ * - Sascha Hauer, Marc Kleine-Budde, Pengutronix
+ * - Simon Kallweit, intefo AG
+ * Copyright 2007
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/can/core.h>
+#include <linux/can/dev.h>
+#include <linux/can/led.h>
+#include <linux/clk.h>
+#include <linux/completion.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/dma-mapping.h>
+#include <linux/freezer.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/netdevice.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+#include <linux/spi/spi.h>
+#include <linux/uaccess.h>
+
+#define HI3110_MASTER_RESET 0x56
+#define HI3110_READ_CTRL0 0xD2
+#define HI3110_READ_CTRL1 0xD4
+#define HI3110_READ_STATF 0xE2
+#define HI3110_WRITE_CTRL0 0x14
+#define HI3110_WRITE_CTRL1 0x16
+#define HI3110_WRITE_INTE 0x1C
+#define HI3110_WRITE_BTR0 0x18
+#define HI3110_WRITE_BTR1 0x1A
+#define HI3110_READ_BTR0 0xD6
+#define HI3110_READ_BTR1 0xD8
+#define HI3110_READ_INTF 0xDE
+#define HI3110_READ_ERR 0xDC
+#define HI3110_READ_FIFO_WOTIME 0x48
+#define HI3110_WRITE_FIFO 0x12
+#define HI3110_READ_MESSTAT 0xDA
+#define HI3110_READ_REC 0xEA
+#define HI3110_READ_TEC 0xEC
+
+#define HI3110_CTRL0_MODE_MASK (7 << 5)
+#define HI3110_CTRL0_NORMAL_MODE (0 << 5)
+#define HI3110_CTRL0_LOOPBACK_MODE (1 << 5)
+#define HI3110_CTRL0_MONITOR_MODE (2 << 5)
+#define HI3110_CTRL0_SLEEP_MODE (3 << 5)
+#define HI3110_CTRL0_INIT_MODE (4 << 5)
+
+#define HI3110_CTRL1_TXEN BIT(7)
+
+#define HI3110_INT_RXTMP BIT(7)
+#define HI3110_INT_RXFIFO BIT(6)
+#define HI3110_INT_TXCPLT BIT(5)
+#define HI3110_INT_BUSERR BIT(4)
+#define HI3110_INT_MCHG BIT(3)
+#define HI3110_INT_WAKEUP BIT(2)
+#define HI3110_INT_F1MESS BIT(1)
+#define HI3110_INT_F0MESS BIT(0)
+
+#define HI3110_ERR_BUSOFF BIT(7)
+#define HI3110_ERR_TXERRP BIT(6)
+#define HI3110_ERR_RXERRP BIT(5)
+#define HI3110_ERR_BITERR BIT(4)
+#define HI3110_ERR_FRMERR BIT(3)
+#define HI3110_ERR_CRCERR BIT(2)
+#define HI3110_ERR_ACKERR BIT(1)
+#define HI3110_ERR_STUFERR BIT(0)
+#define HI3110_ERR_PROTOCOL_MASK (0x1F)
+#define HI3110_ERR_PASSIVE_MASK (0x60)
+
+#define HI3110_STAT_RXFMTY BIT(1)
+#define HI3110_STAT_BUSOFF BIT(2)
+#define HI3110_STAT_ERRP BIT(3)
+#define HI3110_STAT_ERRW BIT(4)
+
+#define HI3110_BTR0_SJW_SHIFT 6
+#define HI3110_BTR0_BRP_SHIFT 0
+
+#define HI3110_BTR1_SAMP_3PERBIT (1 << 7)
+#define HI3110_BTR1_SAMP_1PERBIT (0 << 7)
+#define HI3110_BTR1_TSEG2_SHIFT 4
+#define HI3110_BTR1_TSEG1_SHIFT 0
+
+#define HI3110_FIFO_WOTIME_TAG_OFF 0
+#define HI3110_FIFO_WOTIME_ID_OFF 1
+#define HI3110_FIFO_WOTIME_DLC_OFF 5
+#define HI3110_FIFO_WOTIME_DAT_OFF 6
+
+#define HI3110_FIFO_WOTIME_TAG_IDE BIT(7)
+#define HI3110_FIFO_WOTIME_ID_RTR BIT(0)
+
+#define HI3110_FIFO_TAG_OFF 0
+#define HI3110_FIFO_ID_OFF 1
+#define HI3110_FIFO_STD_DLC_OFF 3
+#define HI3110_FIFO_STD_DATA_OFF 4
+#define HI3110_FIFO_EXT_DLC_OFF 5
+#define HI3110_FIFO_EXT_DATA_OFF 6
+
+#define HI3110_CAN_MAX_DATA_LEN 8
+#define HI3110_RX_BUF_LEN 15
+#define HI3110_TX_STD_BUF_LEN 12
+#define HI3110_TX_EXT_BUF_LEN 14
+#define HI3110_CAN_FRAME_MAX_BITS 128
+#define HI3110_EFF_FLAGS 0x18 /* IDE + SRR */
+
+#define HI3110_TX_ECHO_SKB_MAX 1
+
+#define HI3110_OST_DELAY_MS (10)
+
+#define DEVICE_NAME "hi3110"
+
+static int hi3110_enable_dma = 1; /* Enable SPI DMA. Default: 1 (On) */
+module_param(hi3110_enable_dma, int, 0444);
+MODULE_PARM_DESC(hi3110_enable_dma, "Enable SPI DMA. Default: 1 (On)");
+
+static const struct can_bittiming_const hi3110_bittiming_const = {
+ .name = DEVICE_NAME,
+ .tseg1_min = 2,
+ .tseg1_max = 16,
+ .tseg2_min = 2,
+ .tseg2_max = 8,
+ .sjw_max = 4,
+ .brp_min = 1,
+ .brp_max = 64,
+ .brp_inc = 1,
+};
+
+enum hi3110_model {
+ CAN_HI3110_HI3110 = 0x3110,
+};
+
+struct hi3110_priv {
+ struct can_priv can;
+ struct net_device *net;
+ struct spi_device *spi;
+ enum hi3110_model model;
+
+ struct mutex hi3110_lock; /* SPI device lock */
+
+ u8 *spi_tx_buf;
+ u8 *spi_rx_buf;
+ dma_addr_t spi_tx_dma;
+ dma_addr_t spi_rx_dma;
+
+ struct sk_buff *tx_skb;
+ int tx_len;
+
+ struct workqueue_struct *wq;
+ struct work_struct tx_work;
+ struct work_struct restart_work;
+
+ int force_quit;
+ int after_suspend;
+#define HI3110_AFTER_SUSPEND_UP 1
+#define HI3110_AFTER_SUSPEND_DOWN 2
+#define HI3110_AFTER_SUSPEND_POWER 4
+#define HI3110_AFTER_SUSPEND_RESTART 8
+ int restart_tx;
+ struct regulator *power;
+ struct regulator *transceiver;
+ struct clk *clk;
+};
+
+static void hi3110_clean(struct net_device *net)
+{
+ struct hi3110_priv *priv = netdev_priv(net);
+
+ if (priv->tx_skb || priv->tx_len)
+ net->stats.tx_errors++;
+ if (priv->tx_skb)
+ dev_kfree_skb(priv->tx_skb);
+ if (priv->tx_len)
+ can_free_echo_skb(priv->net, 0);
+ priv->tx_skb = NULL;
+ priv->tx_len = 0;
+}
+
+/* Note about handling of error return of hi3110_spi_trans: accessing
+ * registers via SPI is not really different conceptually than using
+ * normal I/O assembler instructions, although it's much more
+ * complicated from a practical POV. So it's not advisable to always
+ * check the return value of this function. Imagine that every
+ * read{b,l}, write{b,l} and friends would be bracketed in "if ( < 0)
+ * error();", it would be a great mess (well there are some situation
+ * when exception handling C++ like could be useful after all). So we
+ * just check that transfers are OK at the beginning of our
+ * conversation with the chip and to avoid doing really nasty things
+ * (like injecting bogus packets in the network stack).
+ */
+static int hi3110_spi_trans(struct spi_device *spi, int len)
+{
+ struct hi3110_priv *priv = spi_get_drvdata(spi);
+ struct spi_transfer t = {
+ .tx_buf = priv->spi_tx_buf,
+ .rx_buf = priv->spi_rx_buf,
+ .len = len,
+ .cs_change = 0,
+ };
+ struct spi_message m;
+ int ret;
+
+ spi_message_init(&m);
+
+ if (hi3110_enable_dma) {
+ t.tx_dma = priv->spi_tx_dma;
+ t.rx_dma = priv->spi_rx_dma;
+ m.is_dma_mapped = 1;
+ }
+
+ spi_message_add_tail(&t, &m);
+
+ ret = spi_sync(spi, &m);
+
+ if (ret)
+ dev_err(&spi->dev, "spi transfer failed: ret = %d\n", ret);
+ return ret;
+}
+
+static u8 hi3110_cmd(struct spi_device *spi, u8 command)
+{
+ struct hi3110_priv *priv = spi_get_drvdata(spi);
+
+ priv->spi_tx_buf[0] = command;
+ dev_dbg(&spi->dev, "hi3110_cmd: %02X\n", command);
+
+ return hi3110_spi_trans(spi, 1);
+}
+
+static u8 hi3110_read(struct spi_device *spi, u8 command)
+{
+ struct hi3110_priv *priv = spi_get_drvdata(spi);
+ u8 val = 0;
+
+ priv->spi_tx_buf[0] = command;
+ hi3110_spi_trans(spi, 2);
+ val = priv->spi_rx_buf[1];
+
+ return val;
+}
+
+static void hi3110_write(struct spi_device *spi, u8 reg, u8 val)
+{
+ struct hi3110_priv *priv = spi_get_drvdata(spi);
+
+ priv->spi_tx_buf[0] = reg;
+ priv->spi_tx_buf[1] = val;
+ hi3110_spi_trans(spi, 2);
+}
+
+static void hi3110_hw_tx_frame(struct spi_device *spi, u8 *buf, int len)
+{
+ struct hi3110_priv *priv = spi_get_drvdata(spi);
+
+ priv->spi_tx_buf[0] = HI3110_WRITE_FIFO;
+ memcpy(priv->spi_tx_buf + 1, buf, len);
+ hi3110_spi_trans(spi, len + 1);
+}
+
+static void hi3110_hw_tx(struct spi_device *spi, struct can_frame *frame)
+{
+ u8 buf[HI3110_TX_EXT_BUF_LEN];
+
+ buf[HI3110_FIFO_TAG_OFF] = 0;
+
+ if (frame->can_id & CAN_EFF_FLAG) {
+ /* Extended frame */
+ buf[HI3110_FIFO_ID_OFF] = (frame->can_id & CAN_EFF_MASK) >> 21;
+ buf[HI3110_FIFO_ID_OFF + 1] =
+ (((frame->can_id & CAN_EFF_MASK) >> 13) & 0xe0) |
+ HI3110_EFF_FLAGS |
+ (((frame->can_id & CAN_EFF_MASK) >> 15) & 0x07);
+ buf[HI3110_FIFO_ID_OFF + 2] =
+ (frame->can_id & CAN_EFF_MASK) >> 7;
+ buf[HI3110_FIFO_ID_OFF + 3] =
+ ((frame->can_id & CAN_EFF_MASK) << 1) |
+ ((frame->can_id & CAN_RTR_FLAG) ? 1 : 0);
+
+ buf[HI3110_FIFO_EXT_DLC_OFF] = frame->can_dlc;
+
+ memcpy(buf + HI3110_FIFO_EXT_DATA_OFF,
+ frame->data, frame->can_dlc);
+
+ hi3110_hw_tx_frame(spi, buf, HI3110_TX_EXT_BUF_LEN -
+ (HI3110_CAN_MAX_DATA_LEN - frame->can_dlc));
+ } else {
+ /* Standard frame */
+ buf[HI3110_FIFO_ID_OFF] = (frame->can_id & CAN_SFF_MASK) >> 3;
+ buf[HI3110_FIFO_ID_OFF + 1] =
+ ((frame->can_id & CAN_SFF_MASK) << 5) |
+ ((frame->can_id & CAN_RTR_FLAG) ? (1 << 4) : 0);
+
+ buf[HI3110_FIFO_STD_DLC_OFF] = frame->can_dlc;
+
+ memcpy(buf + HI3110_FIFO_STD_DATA_OFF,
+ frame->data, frame->can_dlc);
+
+ hi3110_hw_tx_frame(spi, buf, HI3110_TX_STD_BUF_LEN -
+ (HI3110_CAN_MAX_DATA_LEN - frame->can_dlc));
+ }
+}
+
+static void hi3110_hw_rx_frame(struct spi_device *spi, u8 *buf)
+{
+ struct hi3110_priv *priv = spi_get_drvdata(spi);
+
+ priv->spi_tx_buf[0] = HI3110_READ_FIFO_WOTIME;
+ hi3110_spi_trans(spi, HI3110_RX_BUF_LEN);
+ memcpy(buf, priv->spi_rx_buf + 1, HI3110_RX_BUF_LEN - 1);
+}
+
+static void hi3110_hw_rx(struct spi_device *spi)
+{
+ struct hi3110_priv *priv = spi_get_drvdata(spi);
+ struct sk_buff *skb;
+ struct can_frame *frame;
+ u8 buf[HI3110_RX_BUF_LEN - 1];
+
+ skb = alloc_can_skb(priv->net, &frame);
+ if (!skb) {
+ priv->net->stats.rx_dropped++;
+ return;
+ }
+
+ hi3110_hw_rx_frame(spi, buf);
+ if (buf[HI3110_FIFO_WOTIME_TAG_OFF] & HI3110_FIFO_WOTIME_TAG_IDE) {
+ /* IDE is recessive (1), indicating extended 29-bit frame */
+ frame->can_id = CAN_EFF_FLAG;
+ frame->can_id |=
+ (buf[HI3110_FIFO_WOTIME_ID_OFF] << 21) |
+ (((buf[HI3110_FIFO_WOTIME_ID_OFF + 1] & 0xE0) >> 5) << 18) |
+ ((buf[HI3110_FIFO_WOTIME_ID_OFF + 1] & 0x07) << 15) |
+ (buf[HI3110_FIFO_WOTIME_ID_OFF + 2] << 7) |
+ (buf[HI3110_FIFO_WOTIME_ID_OFF + 3] >> 1);
+ } else {
+ /* IDE is dominant (0), frame indicating standard 11-bit */
+ frame->can_id =
+ (buf[HI3110_FIFO_WOTIME_ID_OFF] << 3) |
+ ((buf[HI3110_FIFO_WOTIME_ID_OFF + 1] & 0xE0) >> 5);
+ }
+
+ /* Data length */
+ frame->can_dlc = get_can_dlc(buf[HI3110_FIFO_WOTIME_DLC_OFF] & 0x0F);
+
+ if (buf[HI3110_FIFO_WOTIME_ID_OFF + 3] & HI3110_FIFO_WOTIME_ID_RTR)
+ frame->can_id |= CAN_RTR_FLAG;
+ else
+ memcpy(frame->data, buf + HI3110_FIFO_WOTIME_DAT_OFF,
+ frame->can_dlc);
+
+ priv->net->stats.rx_packets++;
+ priv->net->stats.rx_bytes += frame->can_dlc;
+
+ can_led_event(priv->net, CAN_LED_EVENT_RX);
+
+ netif_rx_ni(skb);
+}
+
+static void hi3110_hw_sleep(struct spi_device *spi)
+{
+ hi3110_write(spi, HI3110_WRITE_CTRL0, HI3110_CTRL0_SLEEP_MODE);
+}
+
+static netdev_tx_t hi3110_hard_start_xmit(struct sk_buff *skb,
+ struct net_device *net)
+{
+ struct hi3110_priv *priv = netdev_priv(net);
+ struct spi_device *spi = priv->spi;
+
+ if (priv->tx_skb || priv->tx_len) {
+ dev_err(&spi->dev, "hard_xmit called while tx busy\n");
+ return NETDEV_TX_BUSY;
+ }
+
+ if (can_dropped_invalid_skb(net, skb))
+ return NETDEV_TX_OK;
+
+ netif_stop_queue(net);
+ priv->tx_skb = skb;
+ queue_work(priv->wq, &priv->tx_work);
+
+ return NETDEV_TX_OK;
+}
+
+static int hi3110_do_set_mode(struct net_device *net, enum can_mode mode)
+{
+ struct hi3110_priv *priv = netdev_priv(net);
+
+ switch (mode) {
+ case CAN_MODE_START:
+ hi3110_clean(net);
+ /* We have to delay work since SPI I/O may sleep */
+ priv->can.state = CAN_STATE_ERROR_ACTIVE;
+ priv->restart_tx = 1;
+ if (priv->can.restart_ms == 0)
+ priv->after_suspend = HI3110_AFTER_SUSPEND_RESTART;
+ queue_work(priv->wq, &priv->restart_work);
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ return 0;
+}
+
+static int hi3110_get_berr_counter(const struct net_device *net,
+ struct can_berr_counter *bec)
+{
+ struct hi3110_priv *priv = netdev_priv(net);
+ struct spi_device *spi = priv->spi;
+
+ bec->txerr = hi3110_read(spi, HI3110_READ_TEC);
+ bec->rxerr = hi3110_read(spi, HI3110_READ_REC);
+
+ return 0;
+}
+
+static int hi3110_set_normal_mode(struct spi_device *spi)
+{
+ struct hi3110_priv *priv = spi_get_drvdata(spi);
+ u8 reg = 0;
+
+ hi3110_write(spi, HI3110_WRITE_INTE, HI3110_INT_BUSERR |
+ HI3110_INT_RXFIFO | HI3110_INT_TXCPLT);
+
+ /* Enable TX */
+ hi3110_write(spi, HI3110_WRITE_CTRL1, HI3110_CTRL1_TXEN);
+
+ if (priv->can.ctrlmode & CAN_CTRLMODE_LOOPBACK)
+ reg = HI3110_CTRL0_LOOPBACK_MODE;
+ else if (priv->can.ctrlmode & CAN_CTRLMODE_LISTENONLY)
+ reg = HI3110_CTRL0_MONITOR_MODE;
+ else
+ reg = HI3110_CTRL0_NORMAL_MODE;
+
+ hi3110_write(spi, HI3110_WRITE_CTRL0, reg);
+
+ /* Wait for the device to enter the mode */
+ mdelay(HI3110_OST_DELAY_MS);
+ reg = hi3110_read(spi, HI3110_READ_CTRL0);
+ if ((reg & HI3110_CTRL0_MODE_MASK) != reg)
+ return -EBUSY;
+
+ priv->can.state = CAN_STATE_ERROR_ACTIVE;
+ return 0;
+}
+
+static int hi3110_do_set_bittiming(struct net_device *net)
+{
+ struct hi3110_priv *priv = netdev_priv(net);
+ struct can_bittiming *bt = &priv->can.bittiming;
+ struct spi_device *spi = priv->spi;
+
+ hi3110_write(spi, HI3110_WRITE_BTR0,
+ ((bt->sjw - 1) << HI3110_BTR0_SJW_SHIFT) |
+ ((bt->brp - 1) << HI3110_BTR0_BRP_SHIFT));
+
+ hi3110_write(spi, HI3110_WRITE_BTR1,
+ (priv->can.ctrlmode &
+ CAN_CTRLMODE_3_SAMPLES ?
+ HI3110_BTR1_SAMP_3PERBIT : HI3110_BTR1_SAMP_1PERBIT) |
+ ((bt->phase_seg1 + bt->prop_seg - 1)
+ << HI3110_BTR1_TSEG1_SHIFT) |
+ ((bt->phase_seg2 - 1) << HI3110_BTR1_TSEG2_SHIFT));
+
+ dev_dbg(&spi->dev, "BT: 0x%02x 0x%02x\n",
+ hi3110_read(spi, HI3110_READ_BTR0),
+ hi3110_read(spi, HI3110_READ_BTR1));
+
+ return 0;
+}
+
+static int hi3110_setup(struct net_device *net)
+{
+ hi3110_do_set_bittiming(net);
+ return 0;
+}
+
+static int hi3110_hw_reset(struct spi_device *spi)
+{
+ u8 reg;
+ int ret;
+
+ /* Wait for oscillator startup timer after power up */
+ mdelay(HI3110_OST_DELAY_MS);
+
+ ret = hi3110_cmd(spi, HI3110_MASTER_RESET);
+ if (ret)
+ return ret;
+
+ /* Wait for oscillator startup timer after reset */
+ mdelay(HI3110_OST_DELAY_MS);
+
+ reg = hi3110_read(spi, HI3110_READ_CTRL0);
+ if ((reg & HI3110_CTRL0_MODE_MASK) != HI3110_CTRL0_INIT_MODE)
+ return -ENODEV;
+
+ /* As per the datasheet it appears the error flags are
+ * not cleared on reset. Explicitly clear them by performing a read
+ */
+ hi3110_read(spi, HI3110_READ_ERR);
+
+ return 0;
+}
+
+static int hi3110_hw_probe(struct spi_device *spi)
+{
+ u8 statf;
+
+ hi3110_hw_reset(spi);
+
+ /* Confirm correct operation by checking against reset values
+ * in datasheet
+ */
+ statf = hi3110_read(spi, HI3110_READ_STATF);
+
+ dev_dbg(&spi->dev, "statf: %02X\n", statf);
+
+ if (statf != 0x82)
+ return -ENODEV;
+
+ return 0;
+}
+
+static int hi3110_power_enable(struct regulator *reg, int enable)
+{
+ if (IS_ERR_OR_NULL(reg))
+ return 0;
+
+ if (enable)
+ return regulator_enable(reg);
+ else
+ return regulator_disable(reg);
+}
+
+static int hi3110_stop(struct net_device *net)
+{
+ struct hi3110_priv *priv = netdev_priv(net);
+ struct spi_device *spi = priv->spi;
+
+ close_candev(net);
+
+ priv->force_quit = 1;
+ free_irq(spi->irq, priv);
+ destroy_workqueue(priv->wq);
+ priv->wq = NULL;
+
+ mutex_lock(&priv->hi3110_lock);
+
+ /* Disable transmit, interrupts and clear flags */
+ hi3110_write(spi, HI3110_WRITE_CTRL1, 0x0);
+ hi3110_write(spi, HI3110_WRITE_INTE, 0x0);
+ hi3110_read(spi, HI3110_READ_INTF);
+
+ hi3110_clean(net);
+
+ hi3110_hw_sleep(spi);
+
+ hi3110_power_enable(priv->transceiver, 0);
+
+ priv->can.state = CAN_STATE_STOPPED;
+
+ mutex_unlock(&priv->hi3110_lock);
+
+ can_led_event(net, CAN_LED_EVENT_STOP);
+
+ return 0;
+}
+
+static void hi3110_tx_work_handler(struct work_struct *ws)
+{
+ struct hi3110_priv *priv = container_of(ws, struct hi3110_priv,
+ tx_work);
+ struct spi_device *spi = priv->spi;
+ struct net_device *net = priv->net;
+ struct can_frame *frame;
+
+ mutex_lock(&priv->hi3110_lock);
+ if (priv->tx_skb) {
+ if (priv->can.state == CAN_STATE_BUS_OFF) {
+ hi3110_clean(net);
+ } else {
+ frame = (struct can_frame *)priv->tx_skb->data;
+ hi3110_hw_tx(spi, frame);
+ priv->tx_len = 1 + frame->can_dlc;
+ can_put_echo_skb(priv->tx_skb, net, 0);
+ priv->tx_skb = NULL;
+ }
+ }
+ mutex_unlock(&priv->hi3110_lock);
+}
+
+static void hi3110_restart_work_handler(struct work_struct *ws)
+{
+ struct hi3110_priv *priv = container_of(ws, struct hi3110_priv,
+ restart_work);
+ struct spi_device *spi = priv->spi;
+ struct net_device *net = priv->net;
+
+ mutex_lock(&priv->hi3110_lock);
+ if (priv->after_suspend) {
+ hi3110_hw_reset(spi);
+ hi3110_setup(net);
+ if (priv->after_suspend & HI3110_AFTER_SUSPEND_RESTART) {
+ hi3110_set_normal_mode(spi);
+ } else if (priv->after_suspend & HI3110_AFTER_SUSPEND_UP) {
+ netif_device_attach(net);
+ hi3110_clean(net);
+ hi3110_set_normal_mode(spi);
+ netif_wake_queue(net);
+ } else {
+ hi3110_hw_sleep(spi);
+ }
+ priv->after_suspend = 0;
+ priv->force_quit = 0;
+ }
+
+ if (priv->restart_tx) {
+ priv->restart_tx = 0;
+ hi3110_hw_reset(spi);
+ hi3110_setup(net);
+ hi3110_clean(net);
+ hi3110_set_normal_mode(spi);
+ netif_wake_queue(net);
+ }
+ mutex_unlock(&priv->hi3110_lock);
+}
+
+static irqreturn_t hi3110_can_ist(int irq, void *dev_id)
+{
+ struct hi3110_priv *priv = dev_id;
+ struct spi_device *spi = priv->spi;
+ struct net_device *net = priv->net;
+
+ mutex_lock(&priv->hi3110_lock);
+
+ while (!priv->force_quit) {
+ enum can_state new_state;
+ u8 intf, eflag, statf;
+
+ while (!(HI3110_STAT_RXFMTY &
+ (statf = hi3110_read(spi, HI3110_READ_STATF)))) {
+ hi3110_hw_rx(spi);
+ }
+
+ intf = hi3110_read(spi, HI3110_READ_INTF);
+ eflag = hi3110_read(spi, HI3110_READ_ERR);
+ /* Update can state */
+ if (eflag & HI3110_ERR_BUSOFF)
+ new_state = CAN_STATE_BUS_OFF;
+ else if (eflag & HI3110_ERR_PASSIVE_MASK)
+ new_state = CAN_STATE_ERROR_PASSIVE;
+ else if (statf & HI3110_STAT_ERRW)
+ new_state = CAN_STATE_ERROR_WARNING;
+ else
+ new_state = CAN_STATE_ERROR_ACTIVE;
+
+ if (new_state != priv->can.state) {
+ struct can_frame *cf;
+ struct sk_buff *skb;
+ enum can_state rx_state, tx_state;
+ u8 rxerr, txerr;
+
+ skb = alloc_can_err_skb(net, &cf);
+ if (!skb)
+ break;
+
+ txerr = hi3110_read(spi, HI3110_READ_TEC);
+ rxerr = hi3110_read(spi, HI3110_READ_REC);
+ cf->data[6] = txerr;
+ cf->data[7] = rxerr;
+ tx_state = txerr >= rxerr ? new_state : 0;
+ rx_state = txerr <= rxerr ? new_state : 0;
+ can_change_state(net, cf, tx_state, rx_state);
+ netif_rx_ni(skb);
+
+ if (new_state == CAN_STATE_BUS_OFF) {
+ can_bus_off(net);
+ if (priv->can.restart_ms == 0) {
+ priv->force_quit = 1;
+ hi3110_hw_sleep(spi);
+ break;
+ }
+ }
+ }
+
+ /* Update bus errors */
+ if ((intf & HI3110_INT_BUSERR) &&
+ (priv->can.ctrlmode & CAN_CTRLMODE_BERR_REPORTING)) {
+ struct can_frame *cf;
+ struct sk_buff *skb;
+
+ /* Check for protocol errors */
+ if (eflag & HI3110_ERR_PROTOCOL_MASK) {
+ skb = alloc_can_err_skb(net, &cf);
+ if (!skb)
+ break;
+
+ cf->can_id |= CAN_ERR_PROT | CAN_ERR_BUSERROR;
+ priv->can.can_stats.bus_error++;
+ priv->net->stats.rx_errors++;
+ if (eflag & HI3110_ERR_BITERR)
+ cf->data[2] |= CAN_ERR_PROT_BIT;
+ else if (eflag & HI3110_ERR_FRMERR)
+ cf->data[2] |= CAN_ERR_PROT_FORM;
+ else if (eflag & HI3110_ERR_STUFERR)
+ cf->data[2] |= CAN_ERR_PROT_STUFF;
+ else if (eflag & HI3110_ERR_CRCERR)
+ cf->data[3] |= CAN_ERR_PROT_LOC_CRC_SEQ;
+ else if (eflag & HI3110_ERR_ACKERR)
+ cf->data[3] |= CAN_ERR_PROT_LOC_ACK;
+
+ cf->data[6] = hi3110_read(spi, HI3110_READ_TEC);
+ cf->data[7] = hi3110_read(spi, HI3110_READ_REC);
+ netdev_dbg(priv->net, "Bus Error\n");
+ netif_rx_ni(skb);
+ }
+ }
+
+ if (intf == 0)
+ break;
+
+ if (intf & HI3110_INT_TXCPLT) {
+ net->stats.tx_packets++;
+ net->stats.tx_bytes += priv->tx_len - 1;
+ can_led_event(net, CAN_LED_EVENT_TX);
+ if (priv->tx_len) {
+ can_get_echo_skb(net, 0);
+ priv->tx_len = 0;
+ }
+ netif_wake_queue(net);
+ }
+ }
+ mutex_unlock(&priv->hi3110_lock);
+ return IRQ_HANDLED;
+}
+
+static int hi3110_open(struct net_device *net)
+{
+ struct hi3110_priv *priv = netdev_priv(net);
+ struct spi_device *spi = priv->spi;
+ unsigned long flags = IRQF_ONESHOT | IRQF_TRIGGER_RISING;
+ int ret;
+
+ ret = open_candev(net);
+ if (ret)
+ return ret;
+
+ mutex_lock(&priv->hi3110_lock);
+ hi3110_power_enable(priv->transceiver, 1);
+
+ priv->force_quit = 0;
+ priv->tx_skb = NULL;
+ priv->tx_len = 0;
+
+ ret = request_threaded_irq(spi->irq, NULL, hi3110_can_ist,
+ flags, DEVICE_NAME, priv);
+ if (ret) {
+ dev_err(&spi->dev, "failed to acquire irq %d\n", spi->irq);
+ goto out_close;
+ }
+
+ priv->wq = alloc_workqueue("hi3110_wq", WQ_FREEZABLE | WQ_MEM_RECLAIM,
+ 0);
+ if (!priv->wq) {
+ ret = -ENOMEM;
+ goto out_free_irq;
+ }
+ INIT_WORK(&priv->tx_work, hi3110_tx_work_handler);
+ INIT_WORK(&priv->restart_work, hi3110_restart_work_handler);
+
+ ret = hi3110_hw_reset(spi);
+ if (ret)
+ goto out_free_wq;
+
+ ret = hi3110_setup(net);
+ if (ret)
+ goto out_free_wq;
+
+ ret = hi3110_set_normal_mode(spi);
+ if (ret)
+ goto out_free_wq;
+
+ can_led_event(net, CAN_LED_EVENT_OPEN);
+ netif_wake_queue(net);
+ mutex_unlock(&priv->hi3110_lock);
+
+ return 0;
+
+ out_free_wq:
+ destroy_workqueue(priv->wq);
+ out_free_irq:
+ free_irq(spi->irq, priv);
+ hi3110_hw_sleep(spi);
+ out_close:
+ hi3110_power_enable(priv->transceiver, 0);
+ close_candev(net);
+ mutex_unlock(&priv->hi3110_lock);
+ return ret;
+}
+
+static const struct net_device_ops hi3110_netdev_ops = {
+ .ndo_open = hi3110_open,
+ .ndo_stop = hi3110_stop,
+ .ndo_start_xmit = hi3110_hard_start_xmit,
+};
+
+static const struct of_device_id hi3110_of_match[] = {
+ {
+ .compatible = "holt,hi3110",
+ .data = (void *)CAN_HI3110_HI3110,
+ },
+ { }
+};
+MODULE_DEVICE_TABLE(of, hi3110_of_match);
+
+static const struct spi_device_id hi3110_id_table[] = {
+ {
+ .name = "hi3110",
+ .driver_data = (kernel_ulong_t)CAN_HI3110_HI3110,
+ },
+ { }
+};
+MODULE_DEVICE_TABLE(spi, hi3110_id_table);
+
+static int hi3110_can_probe(struct spi_device *spi)
+{
+ const struct of_device_id *of_id = of_match_device(hi3110_of_match,
+ &spi->dev);
+ struct net_device *net;
+ struct hi3110_priv *priv;
+ struct clk *clk;
+ int freq, ret;
+
+ clk = devm_clk_get(&spi->dev, NULL);
+ if (IS_ERR(clk)) {
+ dev_err(&spi->dev, "no CAN clock source defined\n");
+ return PTR_ERR(clk);
+ }
+ freq = clk_get_rate(clk);
+
+ /* Sanity check */
+ if (freq > 40000000)
+ return -ERANGE;
+
+ /* Allocate can/net device */
+ net = alloc_candev(sizeof(struct hi3110_priv), HI3110_TX_ECHO_SKB_MAX);
+ if (!net)
+ return -ENOMEM;
+
+ if (!IS_ERR(clk)) {
+ ret = clk_prepare_enable(clk);
+ if (ret)
+ goto out_free;
+ }
+
+ net->netdev_ops = &hi3110_netdev_ops;
+ net->flags |= IFF_ECHO;
+
+ priv = netdev_priv(net);
+ priv->can.bittiming_const = &hi3110_bittiming_const;
+ priv->can.do_set_mode = hi3110_do_set_mode;
+ priv->can.do_get_berr_counter = hi3110_get_berr_counter;
+ priv->can.clock.freq = freq / 2;
+ priv->can.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES |
+ CAN_CTRLMODE_LOOPBACK |
+ CAN_CTRLMODE_LISTENONLY |
+ CAN_CTRLMODE_BERR_REPORTING;
+
+ if (of_id)
+ priv->model = (enum hi3110_model)of_id->data;
+ else
+ priv->model = spi_get_device_id(spi)->driver_data;
+ priv->net = net;
+ priv->clk = clk;
+
+ spi_set_drvdata(spi, priv);
+
+ /* Configure the SPI bus */
+ spi->bits_per_word = 8;
+ ret = spi_setup(spi);
+ if (ret)
+ goto out_clk;
+
+ priv->power = devm_regulator_get_optional(&spi->dev, "vdd");
+ priv->transceiver = devm_regulator_get_optional(&spi->dev, "xceiver");
+ if ((PTR_ERR(priv->power) == -EPROBE_DEFER) ||
+ (PTR_ERR(priv->transceiver) == -EPROBE_DEFER)) {
+ ret = -EPROBE_DEFER;
+ goto out_clk;
+ }
+
+ ret = hi3110_power_enable(priv->power, 1);
+ if (ret)
+ goto out_clk;
+
+ priv->spi = spi;
+ mutex_init(&priv->hi3110_lock);
+
+ /* If requested, allocate DMA buffers */
+ if (hi3110_enable_dma) {
+ spi->dev.coherent_dma_mask = ~0;
+
+ /* Minimum coherent DMA allocation is PAGE_SIZE, so allocate
+ * that much and share it between Tx and Rx DMA buffers.
+ */
+ priv->spi_tx_buf = dmam_alloc_coherent(&spi->dev,
+ PAGE_SIZE,
+ &priv->spi_tx_dma,
+ GFP_DMA);
+
+ if (priv->spi_tx_buf) {
+ priv->spi_rx_buf = (priv->spi_tx_buf + (PAGE_SIZE / 2));
+ priv->spi_rx_dma = (dma_addr_t)(priv->spi_tx_dma +
+ (PAGE_SIZE / 2));
+ } else {
+ /* Fall back to non-DMA */
+ hi3110_enable_dma = 0;
+ }
+ }
+
+ /* Allocate non-DMA buffers */
+ if (!hi3110_enable_dma) {
+ priv->spi_tx_buf = devm_kzalloc(&spi->dev, HI3110_RX_BUF_LEN,
+ GFP_KERNEL);
+ if (!priv->spi_tx_buf) {
+ ret = -ENOMEM;
+ goto error_probe;
+ }
+ priv->spi_rx_buf = devm_kzalloc(&spi->dev, HI3110_RX_BUF_LEN,
+ GFP_KERNEL);
+
+ if (!priv->spi_rx_buf) {
+ ret = -ENOMEM;
+ goto error_probe;
+ }
+ }
+
+ SET_NETDEV_DEV(net, &spi->dev);
+
+ ret = hi3110_hw_probe(spi);
+ if (ret) {
+ if (ret == -ENODEV)
+ dev_err(&spi->dev, "Cannot initialize %x. Wrong wiring?\n",
+ priv->model);
+ goto error_probe;
+ }
+ hi3110_hw_sleep(spi);
+
+ ret = register_candev(net);
+ if (ret)
+ goto error_probe;
+
+ devm_can_led_init(net);
+ netdev_info(net, "%x successfully initialized.\n", priv->model);
+
+ return 0;
+
+ error_probe:
+ hi3110_power_enable(priv->power, 0);
+
+ out_clk:
+ if (!IS_ERR(clk))
+ clk_disable_unprepare(clk);
+
+ out_free:
+ free_candev(net);
+
+ dev_err(&spi->dev, "Probe failed, err=%d\n", -ret);
+ return ret;
+}
+
+static int hi3110_can_remove(struct spi_device *spi)
+{
+ struct hi3110_priv *priv = spi_get_drvdata(spi);
+ struct net_device *net = priv->net;
+
+ unregister_candev(net);
+
+ hi3110_power_enable(priv->power, 0);
+
+ if (!IS_ERR(priv->clk))
+ clk_disable_unprepare(priv->clk);
+
+ free_candev(net);
+
+ return 0;
+}
+
+static int __maybe_unused hi3110_can_suspend(struct device *dev)
+{
+ struct spi_device *spi = to_spi_device(dev);
+ struct hi3110_priv *priv = spi_get_drvdata(spi);
+ struct net_device *net = priv->net;
+
+ priv->force_quit = 1;
+ disable_irq(spi->irq);
+
+ /* Note: at this point neither IST nor workqueues are running.
+ * open/stop cannot be called anyway so locking is not needed
+ */
+ if (netif_running(net)) {
+ netif_device_detach(net);
+
+ hi3110_hw_sleep(spi);
+ hi3110_power_enable(priv->transceiver, 0);
+ priv->after_suspend = HI3110_AFTER_SUSPEND_UP;
+ } else {
+ priv->after_suspend = HI3110_AFTER_SUSPEND_DOWN;
+ }
+
+ if (!IS_ERR_OR_NULL(priv->power)) {
+ regulator_disable(priv->power);
+ priv->after_suspend |= HI3110_AFTER_SUSPEND_POWER;
+ }
+
+ return 0;
+}
+
+static int __maybe_unused hi3110_can_resume(struct device *dev)
+{
+ struct spi_device *spi = to_spi_device(dev);
+ struct hi3110_priv *priv = spi_get_drvdata(spi);
+
+ if (priv->after_suspend & HI3110_AFTER_SUSPEND_POWER)
+ hi3110_power_enable(priv->power, 1);
+
+ if (priv->after_suspend & HI3110_AFTER_SUSPEND_UP) {
+ hi3110_power_enable(priv->transceiver, 1);
+ queue_work(priv->wq, &priv->restart_work);
+ } else {
+ priv->after_suspend = 0;
+ }
+
+ priv->force_quit = 0;
+ enable_irq(spi->irq);
+ return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(hi3110_can_pm_ops, hi3110_can_suspend, hi3110_can_resume);
+
+static struct spi_driver hi3110_can_driver = {
+ .driver = {
+ .name = DEVICE_NAME,
+ .of_match_table = hi3110_of_match,
+ .pm = &hi3110_can_pm_ops,
+ },
+ .id_table = hi3110_id_table,
+ .probe = hi3110_can_probe,
+ .remove = hi3110_can_remove,
+};
+
+module_spi_driver(hi3110_can_driver);
+
+MODULE_AUTHOR("Akshay Bhat <akshay.bhat@timesys.com>");
+MODULE_AUTHOR("Casey Fitzpatrick <casey.fitzpatrick@timesys.com>");
+MODULE_DESCRIPTION("Holt HI-3110 CAN driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/net/can/ti_hecc.c b/drivers/net/can/ti_hecc.c
index 6749b1829469..b8aac538275c 100644
--- a/drivers/net/can/ti_hecc.c
+++ b/drivers/net/can/ti_hecc.c
@@ -17,25 +17,6 @@
*
*/
-/*
- * Your platform definitions should specify module ram offsets and interrupt
- * number to use as follows:
- *
- * static struct ti_hecc_platform_data am3517_evm_hecc_pdata = {
- * .scc_hecc_offset = 0,
- * .scc_ram_offset = 0x3000,
- * .hecc_ram_offset = 0x3000,
- * .mbx_offset = 0x2000,
- * .int_line = 0,
- * .revision = 1,
- * .transceiver_switch = hecc_phy_control,
- * };
- *
- * Please see include/linux/can/platform/ti_hecc.h for description of
- * above fields.
- *
- */
-
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/types.h>
@@ -46,11 +27,13 @@
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/io.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/regulator/consumer.h>
#include <linux/can/dev.h>
#include <linux/can/error.h>
#include <linux/can/led.h>
-#include <linux/can/platform/ti_hecc.h>
#define DRV_NAME "ti_hecc"
#define HECC_MODULE_VERSION "0.7"
@@ -214,15 +197,14 @@ struct ti_hecc_priv {
struct net_device *ndev;
struct clk *clk;
void __iomem *base;
- u32 scc_ram_offset;
- u32 hecc_ram_offset;
- u32 mbx_offset;
- u32 int_line;
+ void __iomem *hecc_ram;
+ void __iomem *mbx;
+ bool use_hecc1int;
spinlock_t mbx_lock; /* CANME register needs protection */
u32 tx_head;
u32 tx_tail;
u32 rx_next;
- void (*transceiver_switch)(int);
+ struct regulator *reg_xceiver;
};
static inline int get_tx_head_mb(struct ti_hecc_priv *priv)
@@ -242,20 +224,18 @@ static inline int get_tx_head_prio(struct ti_hecc_priv *priv)
static inline void hecc_write_lam(struct ti_hecc_priv *priv, u32 mbxno, u32 val)
{
- __raw_writel(val, priv->base + priv->hecc_ram_offset + mbxno * 4);
+ __raw_writel(val, priv->hecc_ram + mbxno * 4);
}
static inline void hecc_write_mbx(struct ti_hecc_priv *priv, u32 mbxno,
u32 reg, u32 val)
{
- __raw_writel(val, priv->base + priv->mbx_offset + mbxno * 0x10 +
- reg);
+ __raw_writel(val, priv->mbx + mbxno * 0x10 + reg);
}
static inline u32 hecc_read_mbx(struct ti_hecc_priv *priv, u32 mbxno, u32 reg)
{
- return __raw_readl(priv->base + priv->mbx_offset + mbxno * 0x10 +
- reg);
+ return __raw_readl(priv->mbx + mbxno * 0x10 + reg);
}
static inline void hecc_write(struct ti_hecc_priv *priv, u32 reg, u32 val)
@@ -311,11 +291,16 @@ static int ti_hecc_set_btc(struct ti_hecc_priv *priv)
return 0;
}
-static void ti_hecc_transceiver_switch(const struct ti_hecc_priv *priv,
- int on)
+static int ti_hecc_transceiver_switch(const struct ti_hecc_priv *priv,
+ int on)
{
- if (priv->transceiver_switch)
- priv->transceiver_switch(on);
+ if (!priv->reg_xceiver)
+ return 0;
+
+ if (on)
+ return regulator_enable(priv->reg_xceiver);
+ else
+ return regulator_disable(priv->reg_xceiver);
}
static void ti_hecc_reset(struct net_device *ndev)
@@ -409,7 +394,7 @@ static void ti_hecc_start(struct net_device *ndev)
/* Prevent message over-write & Enable interrupts */
hecc_write(priv, HECC_CANOPC, HECC_SET_REG);
- if (priv->int_line) {
+ if (priv->use_hecc1int) {
hecc_write(priv, HECC_CANMIL, HECC_SET_REG);
hecc_write(priv, HECC_CANGIM, HECC_CANGIM_DEF_MASK |
HECC_CANGIM_I1EN | HECC_CANGIM_SIL);
@@ -760,7 +745,7 @@ static irqreturn_t ti_hecc_interrupt(int irq, void *dev_id)
unsigned long ack, flags;
int_status = hecc_read(priv,
- (priv->int_line) ? HECC_CANGIF1 : HECC_CANGIF0);
+ (priv->use_hecc1int) ? HECC_CANGIF1 : HECC_CANGIF0);
if (!int_status)
return IRQ_NONE;
@@ -806,7 +791,7 @@ static irqreturn_t ti_hecc_interrupt(int irq, void *dev_id)
}
/* clear all interrupt conditions - read back to avoid spurious ints */
- if (priv->int_line) {
+ if (priv->use_hecc1int) {
hecc_write(priv, HECC_CANGIF1, HECC_SET_REG);
int_status = hecc_read(priv, HECC_CANGIF1);
} else {
@@ -872,58 +857,87 @@ static const struct net_device_ops ti_hecc_netdev_ops = {
.ndo_change_mtu = can_change_mtu,
};
+static const struct of_device_id ti_hecc_dt_ids[] = {
+ {
+ .compatible = "ti,am3517-hecc",
+ },
+ { }
+};
+MODULE_DEVICE_TABLE(of, ti_hecc_dt_ids);
+
static int ti_hecc_probe(struct platform_device *pdev)
{
struct net_device *ndev = (struct net_device *)0;
struct ti_hecc_priv *priv;
- struct ti_hecc_platform_data *pdata;
- struct resource *mem, *irq;
- void __iomem *addr;
+ struct device_node *np = pdev->dev.of_node;
+ struct resource *res, *irq;
+ struct regulator *reg_xceiver;
int err = -ENODEV;
- pdata = dev_get_platdata(&pdev->dev);
- if (!pdata) {
- dev_err(&pdev->dev, "No platform data\n");
- goto probe_exit;
+ if (!IS_ENABLED(CONFIG_OF) || !np)
+ return -EINVAL;
+
+ reg_xceiver = devm_regulator_get(&pdev->dev, "xceiver");
+ if (PTR_ERR(reg_xceiver) == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+ else if (IS_ERR(reg_xceiver))
+ reg_xceiver = NULL;
+
+ ndev = alloc_candev(sizeof(struct ti_hecc_priv), HECC_MAX_TX_MBOX);
+ if (!ndev) {
+ dev_err(&pdev->dev, "alloc_candev failed\n");
+ return -ENOMEM;
}
+ priv = netdev_priv(ndev);
- mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!mem) {
- dev_err(&pdev->dev, "No mem resources\n");
- goto probe_exit;
+ /* handle hecc memory */
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "hecc");
+ if (!res) {
+ dev_err(&pdev->dev, "can't get IORESOURCE_MEM hecc\n");
+ return -EINVAL;
}
- irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
- if (!irq) {
- dev_err(&pdev->dev, "No irq resource\n");
- goto probe_exit;
+
+ priv->base = devm_ioremap_resource(&pdev->dev, res);
+ if (!priv->base) {
+ dev_err(&pdev->dev, "hecc ioremap failed\n");
+ return -ENOMEM;
}
- if (!request_mem_region(mem->start, resource_size(mem), pdev->name)) {
- dev_err(&pdev->dev, "HECC region already claimed\n");
- err = -EBUSY;
- goto probe_exit;
+
+ /* handle hecc-ram memory */
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "hecc-ram");
+ if (!res) {
+ dev_err(&pdev->dev, "can't get IORESOURCE_MEM hecc-ram\n");
+ return -EINVAL;
}
- addr = ioremap(mem->start, resource_size(mem));
- if (!addr) {
- dev_err(&pdev->dev, "ioremap failed\n");
- err = -ENOMEM;
- goto probe_exit_free_region;
+
+ priv->hecc_ram = devm_ioremap_resource(&pdev->dev, res);
+ if (!priv->hecc_ram) {
+ dev_err(&pdev->dev, "hecc-ram ioremap failed\n");
+ return -ENOMEM;
}
- ndev = alloc_candev(sizeof(struct ti_hecc_priv), HECC_MAX_TX_MBOX);
- if (!ndev) {
- dev_err(&pdev->dev, "alloc_candev failed\n");
- err = -ENOMEM;
- goto probe_exit_iounmap;
+ /* handle mbx memory */
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mbx");
+ if (!res) {
+ dev_err(&pdev->dev, "can't get IORESOURCE_MEM mbx\n");
+ return -EINVAL;
+ }
+
+ priv->mbx = devm_ioremap_resource(&pdev->dev, res);
+ if (!priv->mbx) {
+ dev_err(&pdev->dev, "mbx ioremap failed\n");
+ return -ENOMEM;
+ }
+
+ irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (!irq) {
+ dev_err(&pdev->dev, "No irq resource\n");
+ goto probe_exit;
}
- priv = netdev_priv(ndev);
priv->ndev = ndev;
- priv->base = addr;
- priv->scc_ram_offset = pdata->scc_ram_offset;
- priv->hecc_ram_offset = pdata->hecc_ram_offset;
- priv->mbx_offset = pdata->mbx_offset;
- priv->int_line = pdata->int_line;
- priv->transceiver_switch = pdata->transceiver_switch;
+ priv->reg_xceiver = reg_xceiver;
+ priv->use_hecc1int = of_property_read_bool(np, "ti,use-hecc1int");
priv->can.bittiming_const = &ti_hecc_bittiming_const;
priv->can.do_set_mode = ti_hecc_do_set_mode;
@@ -971,32 +985,23 @@ probe_exit_clk:
clk_put(priv->clk);
probe_exit_candev:
free_candev(ndev);
-probe_exit_iounmap:
- iounmap(addr);
-probe_exit_free_region:
- release_mem_region(mem->start, resource_size(mem));
probe_exit:
return err;
}
static int ti_hecc_remove(struct platform_device *pdev)
{
- struct resource *res;
struct net_device *ndev = platform_get_drvdata(pdev);
struct ti_hecc_priv *priv = netdev_priv(ndev);
unregister_candev(ndev);
clk_disable_unprepare(priv->clk);
clk_put(priv->clk);
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- iounmap(priv->base);
- release_mem_region(res->start, resource_size(res));
free_candev(ndev);
return 0;
}
-
#ifdef CONFIG_PM
static int ti_hecc_suspend(struct platform_device *pdev, pm_message_t state)
{
@@ -1045,6 +1050,7 @@ static int ti_hecc_resume(struct platform_device *pdev)
static struct platform_driver ti_hecc_driver = {
.driver = {
.name = DRV_NAME,
+ .of_match_table = ti_hecc_dt_ids,
},
.probe = ti_hecc_probe,
.remove = ti_hecc_remove,
diff --git a/include/linux/can/core.h b/include/linux/can/core.h
index df08a41d5be5..319a0da827b8 100644
--- a/include/linux/can/core.h
+++ b/include/linux/can/core.h
@@ -45,12 +45,13 @@ struct can_proto {
extern int can_proto_register(const struct can_proto *cp);
extern void can_proto_unregister(const struct can_proto *cp);
-int can_rx_register(struct net_device *dev, canid_t can_id, canid_t mask,
+int can_rx_register(struct net *net, struct net_device *dev,
+ canid_t can_id, canid_t mask,
void (*func)(struct sk_buff *, void *),
void *data, char *ident, struct sock *sk);
-extern void can_rx_unregister(struct net_device *dev, canid_t can_id,
- canid_t mask,
+extern void can_rx_unregister(struct net *net, struct net_device *dev,
+ canid_t can_id, canid_t mask,
void (*func)(struct sk_buff *, void *),
void *data);
diff --git a/include/linux/can/platform/ti_hecc.h b/include/linux/can/platform/ti_hecc.h
deleted file mode 100644
index a52f47ca6c8a..000000000000
--- a/include/linux/can/platform/ti_hecc.h
+++ /dev/null
@@ -1,44 +0,0 @@
-#ifndef _CAN_PLATFORM_TI_HECC_H
-#define _CAN_PLATFORM_TI_HECC_H
-
-/*
- * TI HECC (High End CAN Controller) driver platform header
- *
- * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation version 2.
- *
- * This program is distributed as is WITHOUT ANY WARRANTY of any
- * kind, whether express or implied; without even the implied warranty
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- */
-
-/**
- * struct hecc_platform_data - HECC Platform Data
- *
- * @scc_hecc_offset: mostly 0 - should really never change
- * @scc_ram_offset: SCC RAM offset
- * @hecc_ram_offset: HECC RAM offset
- * @mbx_offset: Mailbox RAM offset
- * @int_line: Interrupt line to use - 0 or 1
- * @version: version for future use
- * @transceiver_switch: platform specific callback fn for transceiver control
- *
- * Platform data structure to get all platform specific settings.
- * this structure also accounts the fact that the IP may have different
- * RAM and mailbox offsets for different SOC's
- */
-struct ti_hecc_platform_data {
- u32 scc_hecc_offset;
- u32 scc_ram_offset;
- u32 hecc_ram_offset;
- u32 mbx_offset;
- u32 int_line;
- u32 version;
- void (*transceiver_switch) (int);
-};
-#endif /* !_CAN_PLATFORM_TI_HECC_H */
diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h
index af8fe8a909dc..fe80bb48ab1f 100644
--- a/include/net/net_namespace.h
+++ b/include/net/net_namespace.h
@@ -27,6 +27,7 @@
#include <net/netns/nftables.h>
#include <net/netns/xfrm.h>
#include <net/netns/mpls.h>
+#include <net/netns/can.h>
#include <linux/ns_common.h>
#include <linux/idr.h>
#include <linux/skbuff.h>
@@ -141,6 +142,9 @@ struct net {
#if IS_ENABLED(CONFIG_MPLS)
struct netns_mpls mpls;
#endif
+#if IS_ENABLED(CONFIG_CAN)
+ struct netns_can can;
+#endif
struct sock *diag_nlsk;
atomic_t fnhe_genid;
};
diff --git a/include/net/netns/can.h b/include/net/netns/can.h
new file mode 100644
index 000000000000..e8beba772f1a
--- /dev/null
+++ b/include/net/netns/can.h
@@ -0,0 +1,31 @@
+/*
+ * can in net namespaces
+ */
+
+#ifndef __NETNS_CAN_H__
+#define __NETNS_CAN_H__
+
+#include <linux/spinlock.h>
+
+struct dev_rcv_lists;
+
+struct netns_can {
+#if IS_ENABLED(CONFIG_PROC_FS)
+ struct proc_dir_entry *proc_dir;
+ struct proc_dir_entry *pde_version;
+ struct proc_dir_entry *pde_stats;
+ struct proc_dir_entry *pde_reset_stats;
+ struct proc_dir_entry *pde_rcvlist_all;
+ struct proc_dir_entry *pde_rcvlist_fil;
+ struct proc_dir_entry *pde_rcvlist_inv;
+ struct proc_dir_entry *pde_rcvlist_sff;
+ struct proc_dir_entry *pde_rcvlist_eff;
+ struct proc_dir_entry *pde_rcvlist_err;
+#endif
+
+ /* receive filters subscribed for 'all' CAN devices */
+ struct dev_rcv_lists *can_rx_alldev_list;
+ spinlock_t can_rcvlists_lock;
+};
+
+#endif /* __NETNS_CAN_H__ */
diff --git a/net/can/af_can.c b/net/can/af_can.c
index 5488e4a6ccd0..abf7d854a94d 100644
--- a/net/can/af_can.c
+++ b/net/can/af_can.c
@@ -75,9 +75,7 @@ static int stats_timer __read_mostly = 1;
module_param(stats_timer, int, S_IRUGO);
MODULE_PARM_DESC(stats_timer, "enable timer for statistics (default:on)");
-/* receive filters subscribed for 'all' CAN devices */
-struct dev_rcv_lists can_rx_alldev_list;
-static DEFINE_SPINLOCK(can_rcvlists_lock);
+static int can_net_id;
static struct kmem_cache *rcv_cache __read_mostly;
@@ -145,9 +143,6 @@ static int can_create(struct net *net, struct socket *sock, int protocol,
if (protocol < 0 || protocol >= CAN_NPROTO)
return -EINVAL;
- if (!net_eq(net, &init_net))
- return -EAFNOSUPPORT;
-
cp = can_get_proto(protocol);
#ifdef CONFIG_MODULES
@@ -331,10 +326,11 @@ EXPORT_SYMBOL(can_send);
* af_can rx path
*/
-static struct dev_rcv_lists *find_dev_rcv_lists(struct net_device *dev)
+static struct dev_rcv_lists *find_dev_rcv_lists(struct net *net,
+ struct net_device *dev)
{
if (!dev)
- return &can_rx_alldev_list;
+ return net->can.can_rx_alldev_list;
else
return (struct dev_rcv_lists *)dev->ml_priv;
}
@@ -467,9 +463,9 @@ static struct hlist_head *find_rcv_list(canid_t *can_id, canid_t *mask,
* -ENOMEM on missing cache mem to create subscription entry
* -ENODEV unknown device
*/
-int can_rx_register(struct net_device *dev, canid_t can_id, canid_t mask,
- void (*func)(struct sk_buff *, void *), void *data,
- char *ident, struct sock *sk)
+int can_rx_register(struct net *net, struct net_device *dev, canid_t can_id,
+ canid_t mask, void (*func)(struct sk_buff *, void *),
+ void *data, char *ident, struct sock *sk)
{
struct receiver *r;
struct hlist_head *rl;
@@ -481,13 +477,16 @@ int can_rx_register(struct net_device *dev, canid_t can_id, canid_t mask,
if (dev && dev->type != ARPHRD_CAN)
return -ENODEV;
+ if (dev && !net_eq(net, dev_net(dev)))
+ return -ENODEV;
+
r = kmem_cache_alloc(rcv_cache, GFP_KERNEL);
if (!r)
return -ENOMEM;
- spin_lock(&can_rcvlists_lock);
+ spin_lock(&net->can.can_rcvlists_lock);
- d = find_dev_rcv_lists(dev);
+ d = find_dev_rcv_lists(net, dev);
if (d) {
rl = find_rcv_list(&can_id, &mask, d);
@@ -510,7 +509,7 @@ int can_rx_register(struct net_device *dev, canid_t can_id, canid_t mask,
err = -ENODEV;
}
- spin_unlock(&can_rcvlists_lock);
+ spin_unlock(&net->can.can_rcvlists_lock);
return err;
}
@@ -540,8 +539,9 @@ static void can_rx_delete_receiver(struct rcu_head *rp)
* Description:
* Removes subscription entry depending on given (subscription) values.
*/
-void can_rx_unregister(struct net_device *dev, canid_t can_id, canid_t mask,
- void (*func)(struct sk_buff *, void *), void *data)
+void can_rx_unregister(struct net *net, struct net_device *dev, canid_t can_id,
+ canid_t mask, void (*func)(struct sk_buff *, void *),
+ void *data)
{
struct receiver *r = NULL;
struct hlist_head *rl;
@@ -550,9 +550,12 @@ void can_rx_unregister(struct net_device *dev, canid_t can_id, canid_t mask,
if (dev && dev->type != ARPHRD_CAN)
return;
- spin_lock(&can_rcvlists_lock);
+ if (dev && !net_eq(net, dev_net(dev)))
+ return;
- d = find_dev_rcv_lists(dev);
+ spin_lock(&net->can.can_rcvlists_lock);
+
+ d = find_dev_rcv_lists(net, dev);
if (!d) {
pr_err("BUG: receive list not found for "
"dev %s, id %03X, mask %03X\n",
@@ -598,7 +601,7 @@ void can_rx_unregister(struct net_device *dev, canid_t can_id, canid_t mask,
}
out:
- spin_unlock(&can_rcvlists_lock);
+ spin_unlock(&net->can.can_rcvlists_lock);
/* schedule the receiver item for deletion */
if (r) {
@@ -696,10 +699,10 @@ static void can_receive(struct sk_buff *skb, struct net_device *dev)
rcu_read_lock();
/* deliver the packet to sockets listening on all devices */
- matches = can_rcv_filter(&can_rx_alldev_list, skb);
+ matches = can_rcv_filter(dev_net(dev)->can.can_rx_alldev_list, skb);
/* find receive list for this device */
- d = find_dev_rcv_lists(dev);
+ d = find_dev_rcv_lists(dev_net(dev), dev);
if (d)
matches += can_rcv_filter(d, skb);
@@ -719,9 +722,6 @@ static int can_rcv(struct sk_buff *skb, struct net_device *dev,
{
struct canfd_frame *cfd = (struct canfd_frame *)skb->data;
- if (unlikely(!net_eq(dev_net(dev), &init_net)))
- goto drop;
-
if (WARN_ONCE(dev->type != ARPHRD_CAN ||
skb->len != CAN_MTU ||
cfd->len > CAN_MAX_DLEN,
@@ -743,9 +743,6 @@ static int canfd_rcv(struct sk_buff *skb, struct net_device *dev,
{
struct canfd_frame *cfd = (struct canfd_frame *)skb->data;
- if (unlikely(!net_eq(dev_net(dev), &init_net)))
- goto drop;
-
if (WARN_ONCE(dev->type != ARPHRD_CAN ||
skb->len != CANFD_MTU ||
cfd->len > CANFD_MAX_DLEN,
@@ -835,9 +832,6 @@ static int can_notifier(struct notifier_block *nb, unsigned long msg,
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
struct dev_rcv_lists *d;
- if (!net_eq(dev_net(dev), &init_net))
- return NOTIFY_DONE;
-
if (dev->type != ARPHRD_CAN)
return NOTIFY_DONE;
@@ -855,7 +849,7 @@ static int can_notifier(struct notifier_block *nb, unsigned long msg,
break;
case NETDEV_UNREGISTER:
- spin_lock(&can_rcvlists_lock);
+ spin_lock(&dev_net(dev)->can.can_rcvlists_lock);
d = dev->ml_priv;
if (d) {
@@ -869,7 +863,7 @@ static int can_notifier(struct notifier_block *nb, unsigned long msg,
pr_err("can: notifier: receive list not found for dev "
"%s\n", dev->name);
- spin_unlock(&can_rcvlists_lock);
+ spin_unlock(&dev_net(dev)->can.can_rcvlists_lock);
break;
}
@@ -877,6 +871,40 @@ static int can_notifier(struct notifier_block *nb, unsigned long msg,
return NOTIFY_DONE;
}
+static int can_pernet_init(struct net *net)
+{
+ net->can.can_rcvlists_lock =
+ __SPIN_LOCK_UNLOCKED(net->can.can_rcvlists_lock);
+ net->can.can_rx_alldev_list =
+ kzalloc(sizeof(struct dev_rcv_lists), GFP_KERNEL);
+
+ if (IS_ENABLED(CONFIG_PROC_FS))
+ can_init_proc(net);
+
+ return 0;
+}
+
+static void can_pernet_exit(struct net *net)
+{
+ struct net_device *dev;
+
+ if (IS_ENABLED(CONFIG_PROC_FS))
+ can_remove_proc(net);
+
+ /* remove created dev_rcv_lists from still registered CAN devices */
+ rcu_read_lock();
+ for_each_netdev_rcu(net, dev) {
+ if (dev->type == ARPHRD_CAN && dev->ml_priv) {
+ struct dev_rcv_lists *d = dev->ml_priv;
+
+ BUG_ON(d->entries);
+ kfree(d);
+ dev->ml_priv = NULL;
+ }
+ }
+ rcu_read_unlock();
+}
+
/*
* af_can module init/exit functions
*/
@@ -902,6 +930,13 @@ static struct notifier_block can_netdev_notifier __read_mostly = {
.notifier_call = can_notifier,
};
+static struct pernet_operations can_pernet_ops __read_mostly = {
+ .init = can_pernet_init,
+ .exit = can_pernet_exit,
+ .id = &can_net_id,
+ .size = 0,
+};
+
static __init int can_init(void)
{
/* check for correct padding to be able to use the structs similarly */
@@ -912,8 +947,6 @@ static __init int can_init(void)
pr_info("can: controller area network core (" CAN_VERSION_STRING ")\n");
- memset(&can_rx_alldev_list, 0, sizeof(can_rx_alldev_list));
-
rcv_cache = kmem_cache_create("can_receiver", sizeof(struct receiver),
0, 0, NULL);
if (!rcv_cache)
@@ -925,9 +958,10 @@ static __init int can_init(void)
setup_timer(&can_stattimer, can_stat_update, 0);
mod_timer(&can_stattimer, round_jiffies(jiffies + HZ));
}
- can_init_proc();
}
+ register_pernet_subsys(&can_pernet_ops);
+
/* protocol register */
sock_register(&can_family_ops);
register_netdevice_notifier(&can_netdev_notifier);
@@ -939,13 +973,9 @@ static __init int can_init(void)
static __exit void can_exit(void)
{
- struct net_device *dev;
-
if (IS_ENABLED(CONFIG_PROC_FS)) {
if (stats_timer)
del_timer_sync(&can_stattimer);
-
- can_remove_proc();
}
/* protocol unregister */
@@ -954,19 +984,7 @@ static __exit void can_exit(void)
unregister_netdevice_notifier(&can_netdev_notifier);
sock_unregister(PF_CAN);
- /* remove created dev_rcv_lists from still registered CAN devices */
- rcu_read_lock();
- for_each_netdev_rcu(&init_net, dev) {
- if (dev->type == ARPHRD_CAN && dev->ml_priv) {
-
- struct dev_rcv_lists *d = dev->ml_priv;
-
- BUG_ON(d->entries);
- kfree(d);
- dev->ml_priv = NULL;
- }
- }
- rcu_read_unlock();
+ unregister_pernet_subsys(&can_pernet_ops);
rcu_barrier(); /* Wait for completion of call_rcu()'s */
diff --git a/net/can/af_can.h b/net/can/af_can.h
index b86f5129e838..f273c9d9b129 100644
--- a/net/can/af_can.h
+++ b/net/can/af_can.h
@@ -114,8 +114,8 @@ struct s_pstats {
extern struct dev_rcv_lists can_rx_alldev_list;
/* function prototypes for the CAN networklayer procfs (proc.c) */
-void can_init_proc(void);
-void can_remove_proc(void);
+void can_init_proc(struct net *net);
+void can_remove_proc(struct net *net);
void can_stat_update(unsigned long data);
/* structures and variables from af_can.c needed in proc.c for reading */
diff --git a/net/can/bcm.c b/net/can/bcm.c
index 95d13b233c65..1976629a8463 100644
--- a/net/can/bcm.c
+++ b/net/can/bcm.c
@@ -764,8 +764,8 @@ static void bcm_remove_op(struct bcm_op *op)
static void bcm_rx_unreg(struct net_device *dev, struct bcm_op *op)
{
if (op->rx_reg_dev == dev) {
- can_rx_unregister(dev, op->can_id, REGMASK(op->can_id),
- bcm_rx_handler, op);
+ can_rx_unregister(&init_net, dev, op->can_id,
+ REGMASK(op->can_id), bcm_rx_handler, op);
/* mark as removed subscription */
op->rx_reg_dev = NULL;
@@ -808,7 +808,7 @@ static int bcm_delete_rx_op(struct list_head *ops, struct bcm_msg_head *mh,
}
}
} else
- can_rx_unregister(NULL, op->can_id,
+ can_rx_unregister(&init_net, NULL, op->can_id,
REGMASK(op->can_id),
bcm_rx_handler, op);
@@ -1222,7 +1222,8 @@ static int bcm_rx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg,
dev = dev_get_by_index(&init_net, ifindex);
if (dev) {
- err = can_rx_register(dev, op->can_id,
+ err = can_rx_register(&init_net, dev,
+ op->can_id,
REGMASK(op->can_id),
bcm_rx_handler, op,
"bcm", sk);
@@ -1232,7 +1233,7 @@ static int bcm_rx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg,
}
} else
- err = can_rx_register(NULL, op->can_id,
+ err = can_rx_register(&init_net, NULL, op->can_id,
REGMASK(op->can_id),
bcm_rx_handler, op, "bcm", sk);
if (err) {
@@ -1528,7 +1529,7 @@ static int bcm_release(struct socket *sock)
}
}
} else
- can_rx_unregister(NULL, op->can_id,
+ can_rx_unregister(&init_net, NULL, op->can_id,
REGMASK(op->can_id),
bcm_rx_handler, op);
diff --git a/net/can/gw.c b/net/can/gw.c
index 7056a1a2bb70..3c117a33e15f 100644
--- a/net/can/gw.c
+++ b/net/can/gw.c
@@ -440,14 +440,14 @@ static void can_can_gw_rcv(struct sk_buff *skb, void *data)
static inline int cgw_register_filter(struct cgw_job *gwj)
{
- return can_rx_register(gwj->src.dev, gwj->ccgw.filter.can_id,
+ return can_rx_register(&init_net, gwj->src.dev, gwj->ccgw.filter.can_id,
gwj->ccgw.filter.can_mask, can_can_gw_rcv,
gwj, "gw", NULL);
}
static inline void cgw_unregister_filter(struct cgw_job *gwj)
{
- can_rx_unregister(gwj->src.dev, gwj->ccgw.filter.can_id,
+ can_rx_unregister(&init_net, gwj->src.dev, gwj->ccgw.filter.can_id,
gwj->ccgw.filter.can_mask, can_can_gw_rcv, gwj);
}
diff --git a/net/can/proc.c b/net/can/proc.c
index 85ef7bb0f176..9a8d54d57b22 100644
--- a/net/can/proc.c
+++ b/net/can/proc.c
@@ -62,17 +62,6 @@
#define CAN_PROC_RCVLIST_EFF "rcvlist_eff"
#define CAN_PROC_RCVLIST_ERR "rcvlist_err"
-static struct proc_dir_entry *can_dir;
-static struct proc_dir_entry *pde_version;
-static struct proc_dir_entry *pde_stats;
-static struct proc_dir_entry *pde_reset_stats;
-static struct proc_dir_entry *pde_rcvlist_all;
-static struct proc_dir_entry *pde_rcvlist_fil;
-static struct proc_dir_entry *pde_rcvlist_inv;
-static struct proc_dir_entry *pde_rcvlist_sff;
-static struct proc_dir_entry *pde_rcvlist_eff;
-static struct proc_dir_entry *pde_rcvlist_err;
-
static int user_reset;
static const char rx_list_name[][8] = {
@@ -351,20 +340,21 @@ static inline void can_rcvlist_proc_show_one(struct seq_file *m, int idx,
static int can_rcvlist_proc_show(struct seq_file *m, void *v)
{
/* double cast to prevent GCC warning */
- int idx = (int)(long)m->private;
+ int idx = (int)(long)PDE_DATA(m->file->f_inode);
struct net_device *dev;
struct dev_rcv_lists *d;
+ struct net *net = m->private;
seq_printf(m, "\nreceive list '%s':\n", rx_list_name[idx]);
rcu_read_lock();
/* receive list for 'all' CAN devices (dev == NULL) */
- d = &can_rx_alldev_list;
+ d = net->can.can_rx_alldev_list;
can_rcvlist_proc_show_one(m, idx, NULL, d);
/* receive list for registered CAN devices */
- for_each_netdev_rcu(&init_net, dev) {
+ for_each_netdev_rcu(net, dev) {
if (dev->type == ARPHRD_CAN && dev->ml_priv)
can_rcvlist_proc_show_one(m, idx, dev, dev->ml_priv);
}
@@ -377,7 +367,7 @@ static int can_rcvlist_proc_show(struct seq_file *m, void *v)
static int can_rcvlist_proc_open(struct inode *inode, struct file *file)
{
- return single_open(file, can_rcvlist_proc_show, PDE_DATA(inode));
+ return single_open_net(inode, file, can_rcvlist_proc_show);
}
static const struct file_operations can_rcvlist_proc_fops = {
@@ -417,6 +407,7 @@ static int can_rcvlist_sff_proc_show(struct seq_file *m, void *v)
{
struct net_device *dev;
struct dev_rcv_lists *d;
+ struct net *net = m->private;
/* RX_SFF */
seq_puts(m, "\nreceive list 'rx_sff':\n");
@@ -424,11 +415,11 @@ static int can_rcvlist_sff_proc_show(struct seq_file *m, void *v)
rcu_read_lock();
/* sff receive list for 'all' CAN devices (dev == NULL) */
- d = &can_rx_alldev_list;
+ d = net->can.can_rx_alldev_list;
can_rcvlist_proc_show_array(m, NULL, d->rx_sff, ARRAY_SIZE(d->rx_sff));
/* sff receive list for registered CAN devices */
- for_each_netdev_rcu(&init_net, dev) {
+ for_each_netdev_rcu(net, dev) {
if (dev->type == ARPHRD_CAN && dev->ml_priv) {
d = dev->ml_priv;
can_rcvlist_proc_show_array(m, dev, d->rx_sff,
@@ -444,7 +435,7 @@ static int can_rcvlist_sff_proc_show(struct seq_file *m, void *v)
static int can_rcvlist_sff_proc_open(struct inode *inode, struct file *file)
{
- return single_open(file, can_rcvlist_sff_proc_show, NULL);
+ return single_open_net(inode, file, can_rcvlist_sff_proc_show);
}
static const struct file_operations can_rcvlist_sff_proc_fops = {
@@ -460,6 +451,7 @@ static int can_rcvlist_eff_proc_show(struct seq_file *m, void *v)
{
struct net_device *dev;
struct dev_rcv_lists *d;
+ struct net *net = m->private;
/* RX_EFF */
seq_puts(m, "\nreceive list 'rx_eff':\n");
@@ -467,11 +459,11 @@ static int can_rcvlist_eff_proc_show(struct seq_file *m, void *v)
rcu_read_lock();
/* eff receive list for 'all' CAN devices (dev == NULL) */
- d = &can_rx_alldev_list;
+ d = net->can.can_rx_alldev_list;
can_rcvlist_proc_show_array(m, NULL, d->rx_eff, ARRAY_SIZE(d->rx_eff));
/* eff receive list for registered CAN devices */
- for_each_netdev_rcu(&init_net, dev) {
+ for_each_netdev_rcu(net, dev) {
if (dev->type == ARPHRD_CAN && dev->ml_priv) {
d = dev->ml_priv;
can_rcvlist_proc_show_array(m, dev, d->rx_eff,
@@ -487,7 +479,7 @@ static int can_rcvlist_eff_proc_show(struct seq_file *m, void *v)
static int can_rcvlist_eff_proc_open(struct inode *inode, struct file *file)
{
- return single_open(file, can_rcvlist_eff_proc_show, NULL);
+ return single_open_net(inode, file, can_rcvlist_eff_proc_show);
}
static const struct file_operations can_rcvlist_eff_proc_fops = {
@@ -499,81 +491,85 @@ static const struct file_operations can_rcvlist_eff_proc_fops = {
};
/*
- * proc utility functions
- */
-
-static void can_remove_proc_readentry(const char *name)
-{
- if (can_dir)
- remove_proc_entry(name, can_dir);
-}
-
-/*
* can_init_proc - create main CAN proc directory and procfs entries
*/
-void can_init_proc(void)
+void can_init_proc(struct net *net)
{
/* create /proc/net/can directory */
- can_dir = proc_mkdir("can", init_net.proc_net);
+ net->can.proc_dir = proc_net_mkdir(net, "can", net->proc_net);
- if (!can_dir) {
- pr_info("can: failed to create /proc/net/can.\n");
+ if (!net->can.proc_dir) {
+ printk(KERN_INFO "can: failed to create /proc/net/can . "
+ "CONFIG_PROC_FS missing?\n");
return;
}
/* own procfs entries from the AF_CAN core */
- pde_version = proc_create(CAN_PROC_VERSION, 0644, can_dir,
- &can_version_proc_fops);
- pde_stats = proc_create(CAN_PROC_STATS, 0644, can_dir,
- &can_stats_proc_fops);
- pde_reset_stats = proc_create(CAN_PROC_RESET_STATS, 0644, can_dir,
- &can_reset_stats_proc_fops);
- pde_rcvlist_err = proc_create_data(CAN_PROC_RCVLIST_ERR, 0644, can_dir,
- &can_rcvlist_proc_fops, (void *)RX_ERR);
- pde_rcvlist_all = proc_create_data(CAN_PROC_RCVLIST_ALL, 0644, can_dir,
- &can_rcvlist_proc_fops, (void *)RX_ALL);
- pde_rcvlist_fil = proc_create_data(CAN_PROC_RCVLIST_FIL, 0644, can_dir,
- &can_rcvlist_proc_fops, (void *)RX_FIL);
- pde_rcvlist_inv = proc_create_data(CAN_PROC_RCVLIST_INV, 0644, can_dir,
- &can_rcvlist_proc_fops, (void *)RX_INV);
- pde_rcvlist_eff = proc_create(CAN_PROC_RCVLIST_EFF, 0644, can_dir,
- &can_rcvlist_eff_proc_fops);
- pde_rcvlist_sff = proc_create(CAN_PROC_RCVLIST_SFF, 0644, can_dir,
- &can_rcvlist_sff_proc_fops);
+ net->can.pde_version = proc_create(CAN_PROC_VERSION, 0644,
+ net->can.proc_dir,
+ &can_version_proc_fops);
+ net->can.pde_stats = proc_create(CAN_PROC_STATS, 0644,
+ net->can.proc_dir,
+ &can_stats_proc_fops);
+ net->can.pde_reset_stats = proc_create(CAN_PROC_RESET_STATS, 0644,
+ net->can.proc_dir,
+ &can_reset_stats_proc_fops);
+ net->can.pde_rcvlist_err = proc_create_data(CAN_PROC_RCVLIST_ERR, 0644,
+ net->can.proc_dir,
+ &can_rcvlist_proc_fops,
+ (void *)RX_ERR);
+ net->can.pde_rcvlist_all = proc_create_data(CAN_PROC_RCVLIST_ALL, 0644,
+ net->can.proc_dir,
+ &can_rcvlist_proc_fops,
+ (void *)RX_ALL);
+ net->can.pde_rcvlist_fil = proc_create_data(CAN_PROC_RCVLIST_FIL, 0644,
+ net->can.proc_dir,
+ &can_rcvlist_proc_fops,
+ (void *)RX_FIL);
+ net->can.pde_rcvlist_inv = proc_create_data(CAN_PROC_RCVLIST_INV, 0644,
+ net->can.proc_dir,
+ &can_rcvlist_proc_fops,
+ (void *)RX_INV);
+ net->can.pde_rcvlist_eff = proc_create(CAN_PROC_RCVLIST_EFF, 0644,
+ net->can.proc_dir,
+ &can_rcvlist_eff_proc_fops);
+ net->can.pde_rcvlist_sff = proc_create(CAN_PROC_RCVLIST_SFF, 0644,
+ net->can.proc_dir,
+ &can_rcvlist_sff_proc_fops);
}
/*
* can_remove_proc - remove procfs entries and main CAN proc directory
*/
-void can_remove_proc(void)
+void can_remove_proc(struct net *net)
{
- if (pde_version)
- can_remove_proc_readentry(CAN_PROC_VERSION);
+ if (net->can.pde_version)
+ remove_proc_entry(CAN_PROC_VERSION, net->can.proc_dir);
- if (pde_stats)
- can_remove_proc_readentry(CAN_PROC_STATS);
+ if (net->can.pde_stats)
+ remove_proc_entry(CAN_PROC_STATS, net->can.proc_dir);
- if (pde_reset_stats)
- can_remove_proc_readentry(CAN_PROC_RESET_STATS);
+ if (net->can.pde_reset_stats)
+ remove_proc_entry(CAN_PROC_RESET_STATS, net->can.proc_dir);
- if (pde_rcvlist_err)
- can_remove_proc_readentry(CAN_PROC_RCVLIST_ERR);
+ if (net->can.pde_rcvlist_err)
+ remove_proc_entry(CAN_PROC_RCVLIST_ERR, net->can.proc_dir);
- if (pde_rcvlist_all)
- can_remove_proc_readentry(CAN_PROC_RCVLIST_ALL);
+ if (net->can.pde_rcvlist_all)
+ remove_proc_entry(CAN_PROC_RCVLIST_ALL, net->can.proc_dir);
- if (pde_rcvlist_fil)
- can_remove_proc_readentry(CAN_PROC_RCVLIST_FIL);
+ if (net->can.pde_rcvlist_fil)
+ remove_proc_entry(CAN_PROC_RCVLIST_FIL, net->can.proc_dir);
- if (pde_rcvlist_inv)
- can_remove_proc_readentry(CAN_PROC_RCVLIST_INV);
+ if (net->can.pde_rcvlist_inv)
+ remove_proc_entry(CAN_PROC_RCVLIST_INV, net->can.proc_dir);
- if (pde_rcvlist_eff)
- can_remove_proc_readentry(CAN_PROC_RCVLIST_EFF);
+ if (net->can.pde_rcvlist_eff)
+ remove_proc_entry(CAN_PROC_RCVLIST_EFF, net->can.proc_dir);
- if (pde_rcvlist_sff)
- can_remove_proc_readentry(CAN_PROC_RCVLIST_SFF);
+ if (net->can.pde_rcvlist_sff)
+ remove_proc_entry(CAN_PROC_RCVLIST_SFF, net->can.proc_dir);
- if (can_dir)
- remove_proc_entry("can", init_net.proc_net);
+ if (net->can.proc_dir)
+ remove_proc_entry("can", net->proc_net);
}
diff --git a/net/can/raw.c b/net/can/raw.c
index 6dc546a06673..864c80dbdb72 100644
--- a/net/can/raw.c
+++ b/net/can/raw.c
@@ -181,20 +181,21 @@ static void raw_rcv(struct sk_buff *oskb, void *data)
kfree_skb(skb);
}
-static int raw_enable_filters(struct net_device *dev, struct sock *sk,
- struct can_filter *filter, int count)
+static int raw_enable_filters(struct net *net, struct net_device *dev,
+ struct sock *sk, struct can_filter *filter,
+ int count)
{
int err = 0;
int i;
for (i = 0; i < count; i++) {
- err = can_rx_register(dev, filter[i].can_id,
+ err = can_rx_register(net, dev, filter[i].can_id,
filter[i].can_mask,
raw_rcv, sk, "raw", sk);
if (err) {
/* clean up successfully registered filters */
while (--i >= 0)
- can_rx_unregister(dev, filter[i].can_id,
+ can_rx_unregister(net, dev, filter[i].can_id,
filter[i].can_mask,
raw_rcv, sk);
break;
@@ -204,57 +205,62 @@ static int raw_enable_filters(struct net_device *dev, struct sock *sk,
return err;
}
-static int raw_enable_errfilter(struct net_device *dev, struct sock *sk,
- can_err_mask_t err_mask)
+static int raw_enable_errfilter(struct net *net, struct net_device *dev,
+ struct sock *sk, can_err_mask_t err_mask)
{
int err = 0;
if (err_mask)
- err = can_rx_register(dev, 0, err_mask | CAN_ERR_FLAG,
+ err = can_rx_register(net, dev, 0, err_mask | CAN_ERR_FLAG,
raw_rcv, sk, "raw", sk);
return err;
}
-static void raw_disable_filters(struct net_device *dev, struct sock *sk,
- struct can_filter *filter, int count)
+static void raw_disable_filters(struct net *net, struct net_device *dev,
+ struct sock *sk, struct can_filter *filter,
+ int count)
{
int i;
for (i = 0; i < count; i++)
- can_rx_unregister(dev, filter[i].can_id, filter[i].can_mask,
- raw_rcv, sk);
+ can_rx_unregister(net, dev, filter[i].can_id,
+ filter[i].can_mask, raw_rcv, sk);
}
-static inline void raw_disable_errfilter(struct net_device *dev,
+static inline void raw_disable_errfilter(struct net *net,
+ struct net_device *dev,
struct sock *sk,
can_err_mask_t err_mask)
{
if (err_mask)
- can_rx_unregister(dev, 0, err_mask | CAN_ERR_FLAG,
+ can_rx_unregister(net, dev, 0, err_mask | CAN_ERR_FLAG,
raw_rcv, sk);
}
-static inline void raw_disable_allfilters(struct net_device *dev,
+static inline void raw_disable_allfilters(struct net *net,
+ struct net_device *dev,
struct sock *sk)
{
struct raw_sock *ro = raw_sk(sk);
- raw_disable_filters(dev, sk, ro->filter, ro->count);
- raw_disable_errfilter(dev, sk, ro->err_mask);
+ raw_disable_filters(net, dev, sk, ro->filter, ro->count);
+ raw_disable_errfilter(net, dev, sk, ro->err_mask);
}
-static int raw_enable_allfilters(struct net_device *dev, struct sock *sk)
+static int raw_enable_allfilters(struct net *net, struct net_device *dev,
+ struct sock *sk)
{
struct raw_sock *ro = raw_sk(sk);
int err;
- err = raw_enable_filters(dev, sk, ro->filter, ro->count);
+ err = raw_enable_filters(net, dev, sk, ro->filter, ro->count);
if (!err) {
- err = raw_enable_errfilter(dev, sk, ro->err_mask);
+ err = raw_enable_errfilter(net, dev, sk, ro->err_mask);
if (err)
- raw_disable_filters(dev, sk, ro->filter, ro->count);
+ raw_disable_filters(net, dev, sk, ro->filter,
+ ro->count);
}
return err;
@@ -267,7 +273,7 @@ static int raw_notifier(struct notifier_block *nb,
struct raw_sock *ro = container_of(nb, struct raw_sock, notifier);
struct sock *sk = &ro->sk;
- if (!net_eq(dev_net(dev), &init_net))
+ if (!net_eq(dev_net(dev), sock_net(sk)))
return NOTIFY_DONE;
if (dev->type != ARPHRD_CAN)
@@ -282,7 +288,7 @@ static int raw_notifier(struct notifier_block *nb,
lock_sock(sk);
/* remove current filters & unregister */
if (ro->bound)
- raw_disable_allfilters(dev, sk);
+ raw_disable_allfilters(dev_net(dev), dev, sk);
if (ro->count > 1)
kfree(ro->filter);
@@ -358,13 +364,13 @@ static int raw_release(struct socket *sock)
if (ro->ifindex) {
struct net_device *dev;
- dev = dev_get_by_index(&init_net, ro->ifindex);
+ dev = dev_get_by_index(sock_net(sk), ro->ifindex);
if (dev) {
- raw_disable_allfilters(dev, sk);
+ raw_disable_allfilters(dev_net(dev), dev, sk);
dev_put(dev);
}
} else
- raw_disable_allfilters(NULL, sk);
+ raw_disable_allfilters(sock_net(sk), NULL, sk);
}
if (ro->count > 1)
@@ -404,7 +410,7 @@ static int raw_bind(struct socket *sock, struct sockaddr *uaddr, int len)
if (addr->can_ifindex) {
struct net_device *dev;
- dev = dev_get_by_index(&init_net, addr->can_ifindex);
+ dev = dev_get_by_index(sock_net(sk), addr->can_ifindex);
if (!dev) {
err = -ENODEV;
goto out;
@@ -420,13 +426,13 @@ static int raw_bind(struct socket *sock, struct sockaddr *uaddr, int len)
ifindex = dev->ifindex;
/* filters set by default/setsockopt */
- err = raw_enable_allfilters(dev, sk);
+ err = raw_enable_allfilters(sock_net(sk), dev, sk);
dev_put(dev);
} else {
ifindex = 0;
/* filters set by default/setsockopt */
- err = raw_enable_allfilters(NULL, sk);
+ err = raw_enable_allfilters(sock_net(sk), NULL, sk);
}
if (!err) {
@@ -435,13 +441,15 @@ static int raw_bind(struct socket *sock, struct sockaddr *uaddr, int len)
if (ro->ifindex) {
struct net_device *dev;
- dev = dev_get_by_index(&init_net, ro->ifindex);
+ dev = dev_get_by_index(sock_net(sk),
+ ro->ifindex);
if (dev) {
- raw_disable_allfilters(dev, sk);
+ raw_disable_allfilters(dev_net(dev),
+ dev, sk);
dev_put(dev);
}
} else
- raw_disable_allfilters(NULL, sk);
+ raw_disable_allfilters(sock_net(sk), NULL, sk);
}
ro->ifindex = ifindex;
ro->bound = 1;
@@ -517,15 +525,16 @@ static int raw_setsockopt(struct socket *sock, int level, int optname,
lock_sock(sk);
if (ro->bound && ro->ifindex)
- dev = dev_get_by_index(&init_net, ro->ifindex);
+ dev = dev_get_by_index(sock_net(sk), ro->ifindex);
if (ro->bound) {
/* (try to) register the new filters */
if (count == 1)
- err = raw_enable_filters(dev, sk, &sfilter, 1);
+ err = raw_enable_filters(sock_net(sk), dev, sk,
+ &sfilter, 1);
else
- err = raw_enable_filters(dev, sk, filter,
- count);
+ err = raw_enable_filters(sock_net(sk), dev, sk,
+ filter, count);
if (err) {
if (count > 1)
kfree(filter);
@@ -533,7 +542,8 @@ static int raw_setsockopt(struct socket *sock, int level, int optname,
}
/* remove old filter registrations */
- raw_disable_filters(dev, sk, ro->filter, ro->count);
+ raw_disable_filters(sock_net(sk), dev, sk, ro->filter,
+ ro->count);
}
/* remove old filter space */
@@ -569,18 +579,20 @@ static int raw_setsockopt(struct socket *sock, int level, int optname,
lock_sock(sk);
if (ro->bound && ro->ifindex)
- dev = dev_get_by_index(&init_net, ro->ifindex);
+ dev = dev_get_by_index(sock_net(sk), ro->ifindex);
/* remove current error mask */
if (ro->bound) {
/* (try to) register the new err_mask */
- err = raw_enable_errfilter(dev, sk, err_mask);
+ err = raw_enable_errfilter(sock_net(sk), dev, sk,
+ err_mask);
if (err)
goto out_err;
/* remove old err_mask registration */
- raw_disable_errfilter(dev, sk, ro->err_mask);
+ raw_disable_errfilter(sock_net(sk), dev, sk,
+ ro->err_mask);
}
/* link new err_mask to the socket */
@@ -741,7 +753,7 @@ static int raw_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
return -EINVAL;
}
- dev = dev_get_by_index(&init_net, ifindex);
+ dev = dev_get_by_index(sock_net(sk), ifindex);
if (!dev)
return -ENXIO;
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