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authorStephane Grosjean <s.grosjean@peak-system.com>2017-01-19 18:31:07 +0300
committerMarc Kleine-Budde <mkl@pengutronix.de>2017-04-25 10:00:45 +0300
commit8ac8321e4a7981312348413b9ec314fd93d71a0c (patch)
tree2ad88a86c96ebe0b489b965c51717518215e31d1 /include/linux/can
parentc3df7c5755ee1a53cd56a4efcf3426334ab9eea4 (diff)
downloadlinux-8ac8321e4a7981312348413b9ec314fd93d71a0c.tar.xz
can: peak: add support for PEAK PCAN-PCIe FD CAN-FD boards
This patch adds the support of the PCAN-PCI Express FD boards made by PEAK-System, for computers using the PCI Express slot. The PCAN-PCI Express FD has one or two CAN FD channels, depending on the model. A galvanic isolation of the CAN ports protects the electronics of the card and the respective computer against disturbances of up to 500 Volts. The PCAN-PCI Express FD can be operated with ambient temperatures in a range of -40 to +85 °C. Such boards run an extented version of the CAN-FD IP running into USB CAN-FD interfaces from PEAK-System, so this patch adds several new commands and their corresponding data types to the PEAK CAN-FD common definitions header file too. Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'include/linux/can')
-rw-r--r--include/linux/can/dev/peak_canfd.h65
1 files changed, 65 insertions, 0 deletions
diff --git a/include/linux/can/dev/peak_canfd.h b/include/linux/can/dev/peak_canfd.h
index 25e20ef2fef8..46dceef2cfa6 100644
--- a/include/linux/can/dev/peak_canfd.h
+++ b/include/linux/can/dev/peak_canfd.h
@@ -23,11 +23,14 @@
#define PUCAN_CMD_LISTEN_ONLY_MODE 0x003
#define PUCAN_CMD_TIMING_SLOW 0x004
#define PUCAN_CMD_TIMING_FAST 0x005
+#define PUCAN_CMD_SET_STD_FILTER 0x006
+#define PUCAN_CMD_RESERVED2 0x007
#define PUCAN_CMD_FILTER_STD 0x008
#define PUCAN_CMD_TX_ABORT 0x009
#define PUCAN_CMD_WR_ERR_CNT 0x00a
#define PUCAN_CMD_SET_EN_OPTION 0x00b
#define PUCAN_CMD_CLR_DIS_OPTION 0x00c
+#define PUCAN_CMD_RX_BARRIER 0x010
#define PUCAN_CMD_END_OF_COLLECTION 0x3ff
/* uCAN received messages list */
@@ -35,6 +38,10 @@
#define PUCAN_MSG_ERROR 0x0002
#define PUCAN_MSG_STATUS 0x0003
#define PUCAN_MSG_BUSLOAD 0x0004
+
+#define PUCAN_MSG_CACHE_CRITICAL 0x0102
+
+/* uCAN transmitted messages */
#define PUCAN_MSG_CAN_TX 0x1000
/* uCAN command common header */
@@ -43,6 +50,12 @@ struct __packed pucan_command {
u16 args[3];
};
+/* return the opcode from the opcode_channel field of a command */
+static inline u16 pucan_cmd_get_opcode(struct pucan_command *c)
+{
+ return le16_to_cpu(c->opcode_channel) & 0x3ff;
+}
+
#define PUCAN_TSLOW_BRP_BITS 10
#define PUCAN_TSLOW_TSGEG1_BITS 8
#define PUCAN_TSLOW_TSGEG2_BITS 7
@@ -108,6 +121,27 @@ struct __packed pucan_filter_std {
__le32 mask; /* CAN-ID bitmask in idx range */
};
+#define PUCAN_FLTSTD_ROW_IDX_MAX ((1 << PUCAN_FLTSTD_ROW_IDX_BITS) - 1)
+
+/* uCAN SET_STD_FILTER command fields */
+struct __packed pucan_std_filter {
+ __le16 opcode_channel;
+
+ u8 unused;
+ u8 idx;
+ __le32 mask; /* CAN-ID bitmask in idx range */
+};
+
+/* uCAN TX_ABORT commands fields */
+#define PUCAN_TX_ABORT_FLUSH 0x0001
+
+struct __packed pucan_tx_abort {
+ __le16 opcode_channel;
+
+ __le16 flags;
+ u32 unused;
+};
+
/* uCAN WR_ERR_CNT command fields */
#define PUCAN_WRERRCNT_TE 0x4000 /* Tx error cntr write Enable */
#define PUCAN_WRERRCNT_RE 0x8000 /* Rx error cntr write Enable */
@@ -184,6 +218,12 @@ struct __packed pucan_error_msg {
u8 rx_err_cnt;
};
+static inline int pucan_error_get_channel(const struct pucan_error_msg *msg)
+{
+ return msg->channel_type_d & 0x0f;
+}
+
+#define PUCAN_RX_BARRIER 0x10
#define PUCAN_BUS_PASSIVE 0x20
#define PUCAN_BUS_WARNING 0x40
#define PUCAN_BUS_BUSOFF 0x80
@@ -197,6 +237,31 @@ struct __packed pucan_status_msg {
u8 unused[3];
};
+static inline int pucan_status_get_channel(const struct pucan_status_msg *msg)
+{
+ return msg->channel_p_w_b & 0x0f;
+}
+
+static inline int pucan_status_is_rx_barrier(const struct pucan_status_msg *msg)
+{
+ return msg->channel_p_w_b & PUCAN_RX_BARRIER;
+}
+
+static inline int pucan_status_is_passive(const struct pucan_status_msg *msg)
+{
+ return msg->channel_p_w_b & PUCAN_BUS_PASSIVE;
+}
+
+static inline int pucan_status_is_warning(const struct pucan_status_msg *msg)
+{
+ return msg->channel_p_w_b & PUCAN_BUS_WARNING;
+}
+
+static inline int pucan_status_is_busoff(const struct pucan_status_msg *msg)
+{
+ return msg->channel_p_w_b & PUCAN_BUS_BUSOFF;
+}
+
/* uCAN transmitted message format */
#define PUCAN_MSG_CHANNEL_DLC(c, d) (((c) & 0xf) | ((d) << 4))