Stephane Grosjean | 0a25e1f | 2015-01-23 11:31:25 +0100 | [diff] [blame] | 1 | /* |
| 2 | * CAN driver for PEAK System PCAN-USB FD / PCAN-USB Pro FD adapter |
| 3 | * |
| 4 | * Copyright (C) 2013-2014 Stephane Grosjean <s.grosjean@peak-system.com> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of the GNU General Public License as published |
| 8 | * by the Free Software Foundation; version 2 of the License. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, but |
| 11 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | * General Public License for more details. |
| 14 | */ |
| 15 | #include <linux/netdevice.h> |
| 16 | #include <linux/usb.h> |
| 17 | #include <linux/module.h> |
| 18 | |
| 19 | #include <linux/can.h> |
| 20 | #include <linux/can/dev.h> |
| 21 | #include <linux/can/error.h> |
| 22 | |
| 23 | #include "pcan_usb_core.h" |
| 24 | #include "pcan_usb_pro.h" |
| 25 | #include "pcan_ucan.h" |
| 26 | |
| 27 | MODULE_SUPPORTED_DEVICE("PEAK-System PCAN-USB FD adapter"); |
| 28 | MODULE_SUPPORTED_DEVICE("PEAK-System PCAN-USB Pro FD adapter"); |
| 29 | |
| 30 | #define PCAN_USBPROFD_CHANNEL_COUNT 2 |
| 31 | #define PCAN_USBFD_CHANNEL_COUNT 1 |
| 32 | |
| 33 | /* PCAN-USB Pro FD adapter internal clock (Hz) */ |
| 34 | #define PCAN_UFD_CRYSTAL_HZ 80000000 |
| 35 | |
| 36 | #define PCAN_UFD_CMD_BUFFER_SIZE 512 |
| 37 | #define PCAN_UFD_LOSPD_PKT_SIZE 64 |
| 38 | |
| 39 | /* PCAN-USB Pro FD command timeout (ms.) */ |
| 40 | #define PCAN_UFD_CMD_TIMEOUT_MS 1000 |
| 41 | |
| 42 | /* PCAN-USB Pro FD rx/tx buffers size */ |
| 43 | #define PCAN_UFD_RX_BUFFER_SIZE 2048 |
| 44 | #define PCAN_UFD_TX_BUFFER_SIZE 512 |
| 45 | |
| 46 | /* read some versions info from the hw devcie */ |
| 47 | struct __packed pcan_ufd_fw_info { |
| 48 | __le16 size_of; /* sizeof this */ |
| 49 | __le16 type; /* type of this structure */ |
| 50 | u8 hw_type; /* Type of hardware (HW_TYPE_xxx) */ |
| 51 | u8 bl_version[3]; /* Bootloader version */ |
| 52 | u8 hw_version; /* Hardware version (PCB) */ |
| 53 | u8 fw_version[3]; /* Firmware version */ |
| 54 | __le32 dev_id[2]; /* "device id" per CAN */ |
| 55 | __le32 ser_no; /* S/N */ |
| 56 | __le32 flags; /* special functions */ |
| 57 | }; |
| 58 | |
| 59 | /* handle device specific info used by the netdevices */ |
| 60 | struct pcan_usb_fd_if { |
| 61 | struct peak_usb_device *dev[PCAN_USB_MAX_CHANNEL]; |
| 62 | struct pcan_ufd_fw_info fw_info; |
| 63 | struct peak_time_ref time_ref; |
| 64 | int cm_ignore_count; |
| 65 | int dev_opened_count; |
| 66 | }; |
| 67 | |
| 68 | /* device information */ |
| 69 | struct pcan_usb_fd_device { |
| 70 | struct peak_usb_device dev; |
| 71 | struct can_berr_counter bec; |
| 72 | struct pcan_usb_fd_if *usb_if; |
| 73 | u8 *cmd_buffer_addr; |
| 74 | }; |
| 75 | |
| 76 | /* Extended USB commands (non uCAN commands) */ |
| 77 | |
| 78 | /* Clock Modes command */ |
| 79 | #define PCAN_UFD_CMD_CLK_SET 0x80 |
| 80 | |
| 81 | #define PCAN_UFD_CLK_80MHZ 0x0 |
| 82 | #define PCAN_UFD_CLK_60MHZ 0x1 |
| 83 | #define PCAN_UFD_CLK_40MHZ 0x2 |
| 84 | #define PCAN_UFD_CLK_30MHZ 0x3 |
| 85 | #define PCAN_UFD_CLK_24MHZ 0x4 |
| 86 | #define PCAN_UFD_CLK_20MHZ 0x5 |
| 87 | #define PCAN_UFD_CLK_DEF PCAN_UFD_CLK_80MHZ |
| 88 | |
| 89 | struct __packed pcan_ufd_clock { |
| 90 | __le16 opcode_channel; |
| 91 | |
| 92 | u8 mode; |
| 93 | u8 unused[5]; |
| 94 | }; |
| 95 | |
| 96 | /* LED control command */ |
| 97 | #define PCAN_UFD_CMD_LED_SET 0x86 |
| 98 | |
| 99 | #define PCAN_UFD_LED_DEV 0x00 |
| 100 | #define PCAN_UFD_LED_FAST 0x01 |
| 101 | #define PCAN_UFD_LED_SLOW 0x02 |
| 102 | #define PCAN_UFD_LED_ON 0x03 |
| 103 | #define PCAN_UFD_LED_OFF 0x04 |
| 104 | #define PCAN_UFD_LED_DEF PCAN_UFD_LED_DEV |
| 105 | |
| 106 | struct __packed pcan_ufd_led { |
| 107 | __le16 opcode_channel; |
| 108 | |
| 109 | u8 mode; |
| 110 | u8 unused[5]; |
| 111 | }; |
| 112 | |
Stephane Grosjean | 3ef5247 | 2015-03-16 11:57:52 +0100 | [diff] [blame] | 113 | /* Extended usage of uCAN commands CMD_xxx_xx_OPTION for PCAN-USB Pro FD */ |
Stephane Grosjean | 0a25e1f | 2015-01-23 11:31:25 +0100 | [diff] [blame] | 114 | #define PCAN_UFD_FLTEXT_CALIBRATION 0x8000 |
| 115 | |
Stephane Grosjean | 3ef5247 | 2015-03-16 11:57:52 +0100 | [diff] [blame] | 116 | struct __packed pcan_ufd_options { |
Stephane Grosjean | 0a25e1f | 2015-01-23 11:31:25 +0100 | [diff] [blame] | 117 | __le16 opcode_channel; |
| 118 | |
Stephane Grosjean | 3ef5247 | 2015-03-16 11:57:52 +0100 | [diff] [blame] | 119 | __le16 ucan_mask; |
Stephane Grosjean | 0a25e1f | 2015-01-23 11:31:25 +0100 | [diff] [blame] | 120 | u16 unused; |
| 121 | __le16 usb_mask; |
| 122 | }; |
| 123 | |
| 124 | /* Extended usage of uCAN messages for PCAN-USB Pro FD */ |
| 125 | #define PCAN_UFD_MSG_CALIBRATION 0x100 |
| 126 | |
| 127 | struct __packed pcan_ufd_ts_msg { |
| 128 | __le16 size; |
| 129 | __le16 type; |
| 130 | __le32 ts_low; |
| 131 | __le32 ts_high; |
| 132 | __le16 usb_frame_index; |
| 133 | u16 unused; |
| 134 | }; |
| 135 | |
| 136 | #define PCAN_UFD_MSG_OVERRUN 0x101 |
| 137 | |
| 138 | #define PCAN_UFD_OVMSG_CHANNEL(o) ((o)->channel & 0xf) |
| 139 | |
| 140 | struct __packed pcan_ufd_ovr_msg { |
| 141 | __le16 size; |
| 142 | __le16 type; |
| 143 | __le32 ts_low; |
| 144 | __le32 ts_high; |
| 145 | u8 channel; |
| 146 | u8 unused[3]; |
| 147 | }; |
| 148 | |
| 149 | static inline int pufd_omsg_get_channel(struct pcan_ufd_ovr_msg *om) |
| 150 | { |
| 151 | return om->channel & 0xf; |
| 152 | } |
| 153 | |
| 154 | /* Clock mode frequency values */ |
| 155 | static const u32 pcan_usb_fd_clk_freq[6] = { |
| 156 | [PCAN_UFD_CLK_80MHZ] = 80000000, |
| 157 | [PCAN_UFD_CLK_60MHZ] = 60000000, |
| 158 | [PCAN_UFD_CLK_40MHZ] = 40000000, |
| 159 | [PCAN_UFD_CLK_30MHZ] = 30000000, |
| 160 | [PCAN_UFD_CLK_24MHZ] = 24000000, |
| 161 | [PCAN_UFD_CLK_20MHZ] = 20000000 |
| 162 | }; |
| 163 | |
| 164 | /* return a device USB interface */ |
| 165 | static inline |
| 166 | struct pcan_usb_fd_if *pcan_usb_fd_dev_if(struct peak_usb_device *dev) |
| 167 | { |
| 168 | struct pcan_usb_fd_device *pdev = |
| 169 | container_of(dev, struct pcan_usb_fd_device, dev); |
| 170 | return pdev->usb_if; |
| 171 | } |
| 172 | |
| 173 | /* return a device USB commands buffer */ |
| 174 | static inline void *pcan_usb_fd_cmd_buffer(struct peak_usb_device *dev) |
| 175 | { |
| 176 | struct pcan_usb_fd_device *pdev = |
| 177 | container_of(dev, struct pcan_usb_fd_device, dev); |
| 178 | return pdev->cmd_buffer_addr; |
| 179 | } |
| 180 | |
| 181 | /* send PCAN-USB Pro FD commands synchronously */ |
| 182 | static int pcan_usb_fd_send_cmd(struct peak_usb_device *dev, void *cmd_tail) |
| 183 | { |
| 184 | void *cmd_head = pcan_usb_fd_cmd_buffer(dev); |
Marc Kleine-Budde | 79d5eed | 2015-04-01 11:49:59 +0200 | [diff] [blame] | 185 | int err = 0; |
Stephane Grosjean | 0a25e1f | 2015-01-23 11:31:25 +0100 | [diff] [blame] | 186 | u8 *packet_ptr; |
Stephane Grosjean | 23d68ed | 2018-01-15 16:31:19 +0100 | [diff] [blame] | 187 | int packet_len; |
Stephane Grosjean | 0a25e1f | 2015-01-23 11:31:25 +0100 | [diff] [blame] | 188 | ptrdiff_t cmd_len; |
| 189 | |
| 190 | /* usb device unregistered? */ |
| 191 | if (!(dev->state & PCAN_USB_STATE_CONNECTED)) |
| 192 | return 0; |
| 193 | |
| 194 | /* if a packet is not filled completely by commands, the command list |
| 195 | * is terminated with an "end of collection" record. |
| 196 | */ |
| 197 | cmd_len = cmd_tail - cmd_head; |
| 198 | if (cmd_len <= (PCAN_UFD_CMD_BUFFER_SIZE - sizeof(u64))) { |
| 199 | memset(cmd_tail, 0xff, sizeof(u64)); |
| 200 | cmd_len += sizeof(u64); |
| 201 | } |
| 202 | |
| 203 | packet_ptr = cmd_head; |
Stephane Grosjean | 23d68ed | 2018-01-15 16:31:19 +0100 | [diff] [blame] | 204 | packet_len = cmd_len; |
Stephane Grosjean | 0a25e1f | 2015-01-23 11:31:25 +0100 | [diff] [blame] | 205 | |
| 206 | /* firmware is not able to re-assemble 512 bytes buffer in full-speed */ |
Stephane Grosjean | 23d68ed | 2018-01-15 16:31:19 +0100 | [diff] [blame] | 207 | if (unlikely(dev->udev->speed != USB_SPEED_HIGH)) |
| 208 | packet_len = min(packet_len, PCAN_UFD_LOSPD_PKT_SIZE); |
Stephane Grosjean | 0a25e1f | 2015-01-23 11:31:25 +0100 | [diff] [blame] | 209 | |
Stephane Grosjean | 23d68ed | 2018-01-15 16:31:19 +0100 | [diff] [blame] | 210 | do { |
Stephane Grosjean | 0a25e1f | 2015-01-23 11:31:25 +0100 | [diff] [blame] | 211 | err = usb_bulk_msg(dev->udev, |
| 212 | usb_sndbulkpipe(dev->udev, |
| 213 | PCAN_USBPRO_EP_CMDOUT), |
| 214 | packet_ptr, packet_len, |
| 215 | NULL, PCAN_UFD_CMD_TIMEOUT_MS); |
| 216 | if (err) { |
| 217 | netdev_err(dev->netdev, |
| 218 | "sending command failure: %d\n", err); |
| 219 | break; |
| 220 | } |
| 221 | |
| 222 | packet_ptr += packet_len; |
Stephane Grosjean | 23d68ed | 2018-01-15 16:31:19 +0100 | [diff] [blame] | 223 | cmd_len -= packet_len; |
| 224 | |
| 225 | if (cmd_len < PCAN_UFD_LOSPD_PKT_SIZE) |
| 226 | packet_len = cmd_len; |
| 227 | |
| 228 | } while (packet_len > 0); |
Stephane Grosjean | 0a25e1f | 2015-01-23 11:31:25 +0100 | [diff] [blame] | 229 | |
| 230 | return err; |
| 231 | } |
| 232 | |
| 233 | /* build the commands list in the given buffer, to enter operational mode */ |
| 234 | static int pcan_usb_fd_build_restart_cmd(struct peak_usb_device *dev, u8 *buf) |
| 235 | { |
| 236 | struct pucan_wr_err_cnt *prc; |
| 237 | struct pucan_command *cmd; |
| 238 | u8 *pc = buf; |
| 239 | |
| 240 | /* 1st, reset error counters: */ |
| 241 | prc = (struct pucan_wr_err_cnt *)pc; |
| 242 | prc->opcode_channel = pucan_cmd_opcode_channel(dev, |
| 243 | PUCAN_CMD_WR_ERR_CNT); |
| 244 | |
| 245 | /* select both counters */ |
| 246 | prc->sel_mask = cpu_to_le16(PUCAN_WRERRCNT_TE|PUCAN_WRERRCNT_RE); |
| 247 | |
| 248 | /* and reset their values */ |
| 249 | prc->tx_counter = 0; |
| 250 | prc->rx_counter = 0; |
| 251 | |
| 252 | /* moves the pointer forward */ |
| 253 | pc += sizeof(struct pucan_wr_err_cnt); |
| 254 | |
Stephane Grosjean | 0f251e4 | 2015-03-16 11:57:53 +0100 | [diff] [blame] | 255 | /* add command to switch from ISO to non-ISO mode, if fw allows it */ |
| 256 | if (dev->can.ctrlmode_supported & CAN_CTRLMODE_FD_NON_ISO) { |
| 257 | struct pucan_options *puo = (struct pucan_options *)pc; |
| 258 | |
| 259 | puo->opcode_channel = |
| 260 | (dev->can.ctrlmode & CAN_CTRLMODE_FD_NON_ISO) ? |
| 261 | pucan_cmd_opcode_channel(dev, |
| 262 | PUCAN_CMD_CLR_DIS_OPTION) : |
| 263 | pucan_cmd_opcode_channel(dev, PUCAN_CMD_SET_EN_OPTION); |
| 264 | |
| 265 | puo->options = cpu_to_le16(PUCAN_OPTION_CANDFDISO); |
| 266 | |
| 267 | /* to be sure that no other extended bits will be taken into |
| 268 | * account |
| 269 | */ |
| 270 | puo->unused = 0; |
| 271 | |
| 272 | /* moves the pointer forward */ |
| 273 | pc += sizeof(struct pucan_options); |
| 274 | } |
| 275 | |
Stephane Grosjean | 0a25e1f | 2015-01-23 11:31:25 +0100 | [diff] [blame] | 276 | /* next, go back to operational mode */ |
| 277 | cmd = (struct pucan_command *)pc; |
| 278 | cmd->opcode_channel = pucan_cmd_opcode_channel(dev, |
| 279 | (dev->can.ctrlmode & CAN_CTRLMODE_LISTENONLY) ? |
| 280 | PUCAN_CMD_LISTEN_ONLY_MODE : |
| 281 | PUCAN_CMD_NORMAL_MODE); |
| 282 | pc += sizeof(struct pucan_command); |
| 283 | |
| 284 | return pc - buf; |
| 285 | } |
| 286 | |
| 287 | /* set CAN bus on/off */ |
| 288 | static int pcan_usb_fd_set_bus(struct peak_usb_device *dev, u8 onoff) |
| 289 | { |
| 290 | u8 *pc = pcan_usb_fd_cmd_buffer(dev); |
| 291 | int l; |
| 292 | |
| 293 | if (onoff) { |
| 294 | /* build the cmds list to enter operational mode */ |
| 295 | l = pcan_usb_fd_build_restart_cmd(dev, pc); |
| 296 | } else { |
| 297 | struct pucan_command *cmd = (struct pucan_command *)pc; |
| 298 | |
| 299 | /* build cmd to go back to reset mode */ |
| 300 | cmd->opcode_channel = pucan_cmd_opcode_channel(dev, |
| 301 | PUCAN_CMD_RESET_MODE); |
| 302 | l = sizeof(struct pucan_command); |
| 303 | } |
| 304 | |
| 305 | /* send the command */ |
| 306 | return pcan_usb_fd_send_cmd(dev, pc + l); |
| 307 | } |
| 308 | |
| 309 | /* set filtering masks: |
| 310 | * |
| 311 | * idx in range [0..63] selects a row #idx, all rows otherwise |
| 312 | * mask in range [0..0xffffffff] defines up to 32 CANIDs in the row(s) |
| 313 | * |
| 314 | * Each bit of this 64 x 32 bits array defines a CANID value: |
| 315 | * |
| 316 | * bit[i,j] = 1 implies that CANID=(i x 32)+j will be received, while |
| 317 | * bit[i,j] = 0 implies that CANID=(i x 32)+j will be discarded. |
| 318 | */ |
| 319 | static int pcan_usb_fd_set_filter_std(struct peak_usb_device *dev, int idx, |
| 320 | u32 mask) |
| 321 | { |
| 322 | struct pucan_filter_std *cmd = pcan_usb_fd_cmd_buffer(dev); |
| 323 | int i, n; |
| 324 | |
| 325 | /* select all rows when idx is out of range [0..63] */ |
| 326 | if ((idx < 0) || (idx >= (1 << PUCAN_FLTSTD_ROW_IDX_BITS))) { |
| 327 | n = 1 << PUCAN_FLTSTD_ROW_IDX_BITS; |
| 328 | idx = 0; |
| 329 | |
| 330 | /* select the row (and only the row) otherwise */ |
| 331 | } else { |
| 332 | n = idx + 1; |
| 333 | } |
| 334 | |
| 335 | for (i = idx; i < n; i++, cmd++) { |
| 336 | cmd->opcode_channel = pucan_cmd_opcode_channel(dev, |
| 337 | PUCAN_CMD_FILTER_STD); |
| 338 | cmd->idx = cpu_to_le16(i); |
| 339 | cmd->mask = cpu_to_le32(mask); |
| 340 | } |
| 341 | |
| 342 | /* send the command */ |
| 343 | return pcan_usb_fd_send_cmd(dev, cmd); |
| 344 | } |
| 345 | |
Stephane Grosjean | 3ef5247 | 2015-03-16 11:57:52 +0100 | [diff] [blame] | 346 | /* set/unset options |
Stephane Grosjean | 0a25e1f | 2015-01-23 11:31:25 +0100 | [diff] [blame] | 347 | * |
Stephane Grosjean | 3ef5247 | 2015-03-16 11:57:52 +0100 | [diff] [blame] | 348 | * onoff set(1)/unset(0) options |
| 349 | * mask each bit defines a kind of options to set/unset |
Stephane Grosjean | 0a25e1f | 2015-01-23 11:31:25 +0100 | [diff] [blame] | 350 | */ |
Stephane Grosjean | 3ef5247 | 2015-03-16 11:57:52 +0100 | [diff] [blame] | 351 | static int pcan_usb_fd_set_options(struct peak_usb_device *dev, |
| 352 | bool onoff, u16 ucan_mask, u16 usb_mask) |
Stephane Grosjean | 0a25e1f | 2015-01-23 11:31:25 +0100 | [diff] [blame] | 353 | { |
Stephane Grosjean | 3ef5247 | 2015-03-16 11:57:52 +0100 | [diff] [blame] | 354 | struct pcan_ufd_options *cmd = pcan_usb_fd_cmd_buffer(dev); |
Stephane Grosjean | 0a25e1f | 2015-01-23 11:31:25 +0100 | [diff] [blame] | 355 | |
| 356 | cmd->opcode_channel = pucan_cmd_opcode_channel(dev, |
Stephane Grosjean | 3ef5247 | 2015-03-16 11:57:52 +0100 | [diff] [blame] | 357 | (onoff) ? PUCAN_CMD_SET_EN_OPTION : |
| 358 | PUCAN_CMD_CLR_DIS_OPTION); |
Stephane Grosjean | 0a25e1f | 2015-01-23 11:31:25 +0100 | [diff] [blame] | 359 | |
Stephane Grosjean | 3ef5247 | 2015-03-16 11:57:52 +0100 | [diff] [blame] | 360 | cmd->ucan_mask = cpu_to_le16(ucan_mask); |
Stephane Grosjean | 0a25e1f | 2015-01-23 11:31:25 +0100 | [diff] [blame] | 361 | cmd->usb_mask = cpu_to_le16(usb_mask); |
| 362 | |
| 363 | /* send the command */ |
| 364 | return pcan_usb_fd_send_cmd(dev, ++cmd); |
| 365 | } |
| 366 | |
| 367 | /* setup LED control */ |
| 368 | static int pcan_usb_fd_set_can_led(struct peak_usb_device *dev, u8 led_mode) |
| 369 | { |
| 370 | struct pcan_ufd_led *cmd = pcan_usb_fd_cmd_buffer(dev); |
| 371 | |
| 372 | cmd->opcode_channel = pucan_cmd_opcode_channel(dev, |
| 373 | PCAN_UFD_CMD_LED_SET); |
| 374 | cmd->mode = led_mode; |
| 375 | |
| 376 | /* send the command */ |
| 377 | return pcan_usb_fd_send_cmd(dev, ++cmd); |
| 378 | } |
| 379 | |
| 380 | /* set CAN clock domain */ |
| 381 | static int pcan_usb_fd_set_clock_domain(struct peak_usb_device *dev, |
| 382 | u8 clk_mode) |
| 383 | { |
| 384 | struct pcan_ufd_clock *cmd = pcan_usb_fd_cmd_buffer(dev); |
| 385 | |
| 386 | cmd->opcode_channel = pucan_cmd_opcode_channel(dev, |
| 387 | PCAN_UFD_CMD_CLK_SET); |
| 388 | cmd->mode = clk_mode; |
| 389 | |
| 390 | /* send the command */ |
| 391 | return pcan_usb_fd_send_cmd(dev, ++cmd); |
| 392 | } |
| 393 | |
| 394 | /* set bittiming for CAN and CAN-FD header */ |
| 395 | static int pcan_usb_fd_set_bittiming_slow(struct peak_usb_device *dev, |
| 396 | struct can_bittiming *bt) |
| 397 | { |
| 398 | struct pucan_timing_slow *cmd = pcan_usb_fd_cmd_buffer(dev); |
| 399 | |
| 400 | cmd->opcode_channel = pucan_cmd_opcode_channel(dev, |
| 401 | PUCAN_CMD_TIMING_SLOW); |
| 402 | cmd->sjw_t = PUCAN_TSLOW_SJW_T(bt->sjw - 1, |
| 403 | dev->can.ctrlmode & CAN_CTRLMODE_3_SAMPLES); |
| 404 | |
| 405 | cmd->tseg2 = PUCAN_TSLOW_TSEG2(bt->phase_seg2 - 1); |
| 406 | cmd->tseg1 = PUCAN_TSLOW_TSEG1(bt->prop_seg + bt->phase_seg1 - 1); |
| 407 | cmd->brp = cpu_to_le16(PUCAN_TSLOW_BRP(bt->brp - 1)); |
| 408 | |
| 409 | cmd->ewl = 96; /* default */ |
| 410 | |
| 411 | /* send the command */ |
| 412 | return pcan_usb_fd_send_cmd(dev, ++cmd); |
| 413 | } |
| 414 | |
| 415 | /* set CAN-FD bittiming for data */ |
| 416 | static int pcan_usb_fd_set_bittiming_fast(struct peak_usb_device *dev, |
| 417 | struct can_bittiming *bt) |
| 418 | { |
| 419 | struct pucan_timing_fast *cmd = pcan_usb_fd_cmd_buffer(dev); |
| 420 | |
| 421 | cmd->opcode_channel = pucan_cmd_opcode_channel(dev, |
| 422 | PUCAN_CMD_TIMING_FAST); |
| 423 | cmd->sjw = PUCAN_TFAST_SJW(bt->sjw - 1); |
| 424 | cmd->tseg2 = PUCAN_TFAST_TSEG2(bt->phase_seg2 - 1); |
| 425 | cmd->tseg1 = PUCAN_TFAST_TSEG1(bt->prop_seg + bt->phase_seg1 - 1); |
| 426 | cmd->brp = cpu_to_le16(PUCAN_TFAST_BRP(bt->brp - 1)); |
| 427 | |
| 428 | /* send the command */ |
| 429 | return pcan_usb_fd_send_cmd(dev, ++cmd); |
| 430 | } |
| 431 | |
| 432 | /* handle restart but in asynchronously way |
| 433 | * (uses PCAN-USB Pro code to complete asynchronous request) |
| 434 | */ |
| 435 | static int pcan_usb_fd_restart_async(struct peak_usb_device *dev, |
| 436 | struct urb *urb, u8 *buf) |
| 437 | { |
| 438 | u8 *pc = buf; |
| 439 | |
| 440 | /* build the entire cmds list in the provided buffer, to go back into |
| 441 | * operational mode. |
| 442 | */ |
| 443 | pc += pcan_usb_fd_build_restart_cmd(dev, pc); |
| 444 | |
| 445 | /* add EOC */ |
| 446 | memset(pc, 0xff, sizeof(struct pucan_command)); |
| 447 | pc += sizeof(struct pucan_command); |
| 448 | |
| 449 | /* complete the URB */ |
| 450 | usb_fill_bulk_urb(urb, dev->udev, |
| 451 | usb_sndbulkpipe(dev->udev, PCAN_USBPRO_EP_CMDOUT), |
| 452 | buf, pc - buf, |
| 453 | pcan_usb_pro_restart_complete, dev); |
| 454 | |
| 455 | /* and submit it. */ |
| 456 | return usb_submit_urb(urb, GFP_ATOMIC); |
| 457 | } |
| 458 | |
| 459 | static int pcan_usb_fd_drv_loaded(struct peak_usb_device *dev, bool loaded) |
| 460 | { |
| 461 | struct pcan_usb_fd_device *pdev = |
| 462 | container_of(dev, struct pcan_usb_fd_device, dev); |
| 463 | |
| 464 | pdev->cmd_buffer_addr[0] = 0; |
| 465 | pdev->cmd_buffer_addr[1] = !!loaded; |
| 466 | |
| 467 | return pcan_usb_pro_send_req(dev, |
| 468 | PCAN_USBPRO_REQ_FCT, |
| 469 | PCAN_USBPRO_FCT_DRVLD, |
| 470 | pdev->cmd_buffer_addr, |
| 471 | PCAN_USBPRO_FCT_DRVLD_REQ_LEN); |
| 472 | } |
| 473 | |
| 474 | static int pcan_usb_fd_decode_canmsg(struct pcan_usb_fd_if *usb_if, |
| 475 | struct pucan_msg *rx_msg) |
| 476 | { |
| 477 | struct pucan_rx_msg *rm = (struct pucan_rx_msg *)rx_msg; |
| 478 | struct peak_usb_device *dev = usb_if->dev[pucan_msg_get_channel(rm)]; |
| 479 | struct net_device *netdev = dev->netdev; |
| 480 | struct canfd_frame *cfd; |
| 481 | struct sk_buff *skb; |
| 482 | const u16 rx_msg_flags = le16_to_cpu(rm->flags); |
| 483 | |
| 484 | if (rx_msg_flags & PUCAN_MSG_EXT_DATA_LEN) { |
| 485 | /* CANFD frame case */ |
| 486 | skb = alloc_canfd_skb(netdev, &cfd); |
| 487 | if (!skb) |
| 488 | return -ENOMEM; |
| 489 | |
| 490 | if (rx_msg_flags & PUCAN_MSG_BITRATE_SWITCH) |
| 491 | cfd->flags |= CANFD_BRS; |
| 492 | |
| 493 | if (rx_msg_flags & PUCAN_MSG_ERROR_STATE_IND) |
| 494 | cfd->flags |= CANFD_ESI; |
| 495 | |
| 496 | cfd->len = can_dlc2len(get_canfd_dlc(pucan_msg_get_dlc(rm))); |
| 497 | } else { |
| 498 | /* CAN 2.0 frame case */ |
| 499 | skb = alloc_can_skb(netdev, (struct can_frame **)&cfd); |
| 500 | if (!skb) |
| 501 | return -ENOMEM; |
| 502 | |
| 503 | cfd->len = get_can_dlc(pucan_msg_get_dlc(rm)); |
| 504 | } |
| 505 | |
| 506 | cfd->can_id = le32_to_cpu(rm->can_id); |
| 507 | |
| 508 | if (rx_msg_flags & PUCAN_MSG_EXT_ID) |
| 509 | cfd->can_id |= CAN_EFF_FLAG; |
| 510 | |
| 511 | if (rx_msg_flags & PUCAN_MSG_RTR) |
| 512 | cfd->can_id |= CAN_RTR_FLAG; |
| 513 | else |
| 514 | memcpy(cfd->data, rm->d, cfd->len); |
| 515 | |
| 516 | peak_usb_netif_rx(skb, &usb_if->time_ref, |
| 517 | le32_to_cpu(rm->ts_low), le32_to_cpu(rm->ts_high)); |
| 518 | |
| 519 | netdev->stats.rx_packets++; |
| 520 | netdev->stats.rx_bytes += cfd->len; |
| 521 | |
| 522 | return 0; |
| 523 | } |
| 524 | |
| 525 | /* handle uCAN status message */ |
| 526 | static int pcan_usb_fd_decode_status(struct pcan_usb_fd_if *usb_if, |
| 527 | struct pucan_msg *rx_msg) |
| 528 | { |
| 529 | struct pucan_status_msg *sm = (struct pucan_status_msg *)rx_msg; |
| 530 | struct peak_usb_device *dev = usb_if->dev[pucan_stmsg_get_channel(sm)]; |
| 531 | struct pcan_usb_fd_device *pdev = |
| 532 | container_of(dev, struct pcan_usb_fd_device, dev); |
| 533 | enum can_state new_state = CAN_STATE_ERROR_ACTIVE; |
| 534 | enum can_state rx_state, tx_state; |
| 535 | struct net_device *netdev = dev->netdev; |
| 536 | struct can_frame *cf; |
| 537 | struct sk_buff *skb; |
| 538 | |
| 539 | /* nothing should be sent while in BUS_OFF state */ |
| 540 | if (dev->can.state == CAN_STATE_BUS_OFF) |
| 541 | return 0; |
| 542 | |
| 543 | if (sm->channel_p_w_b & PUCAN_BUS_BUSOFF) { |
| 544 | new_state = CAN_STATE_BUS_OFF; |
| 545 | } else if (sm->channel_p_w_b & PUCAN_BUS_PASSIVE) { |
| 546 | new_state = CAN_STATE_ERROR_PASSIVE; |
| 547 | } else if (sm->channel_p_w_b & PUCAN_BUS_WARNING) { |
| 548 | new_state = CAN_STATE_ERROR_WARNING; |
| 549 | } else { |
| 550 | /* no error bit (so, no error skb, back to active state) */ |
| 551 | dev->can.state = CAN_STATE_ERROR_ACTIVE; |
| 552 | pdev->bec.txerr = 0; |
| 553 | pdev->bec.rxerr = 0; |
| 554 | return 0; |
| 555 | } |
| 556 | |
| 557 | /* state hasn't changed */ |
| 558 | if (new_state == dev->can.state) |
| 559 | return 0; |
| 560 | |
| 561 | /* handle bus state change */ |
| 562 | tx_state = (pdev->bec.txerr >= pdev->bec.rxerr) ? new_state : 0; |
| 563 | rx_state = (pdev->bec.txerr <= pdev->bec.rxerr) ? new_state : 0; |
| 564 | |
| 565 | /* allocate an skb to store the error frame */ |
| 566 | skb = alloc_can_err_skb(netdev, &cf); |
| 567 | if (skb) |
| 568 | can_change_state(netdev, cf, tx_state, rx_state); |
| 569 | |
| 570 | /* things must be done even in case of OOM */ |
| 571 | if (new_state == CAN_STATE_BUS_OFF) |
| 572 | can_bus_off(netdev); |
| 573 | |
| 574 | if (!skb) |
| 575 | return -ENOMEM; |
| 576 | |
| 577 | peak_usb_netif_rx(skb, &usb_if->time_ref, |
| 578 | le32_to_cpu(sm->ts_low), le32_to_cpu(sm->ts_high)); |
| 579 | |
| 580 | netdev->stats.rx_packets++; |
| 581 | netdev->stats.rx_bytes += cf->can_dlc; |
| 582 | |
| 583 | return 0; |
| 584 | } |
| 585 | |
| 586 | /* handle uCAN error message */ |
| 587 | static int pcan_usb_fd_decode_error(struct pcan_usb_fd_if *usb_if, |
| 588 | struct pucan_msg *rx_msg) |
| 589 | { |
| 590 | struct pucan_error_msg *er = (struct pucan_error_msg *)rx_msg; |
| 591 | struct peak_usb_device *dev = usb_if->dev[pucan_ermsg_get_channel(er)]; |
| 592 | struct pcan_usb_fd_device *pdev = |
| 593 | container_of(dev, struct pcan_usb_fd_device, dev); |
| 594 | |
| 595 | /* keep a trace of tx and rx error counters for later use */ |
| 596 | pdev->bec.txerr = er->tx_err_cnt; |
| 597 | pdev->bec.rxerr = er->rx_err_cnt; |
| 598 | |
| 599 | return 0; |
| 600 | } |
| 601 | |
| 602 | /* handle uCAN overrun message */ |
| 603 | static int pcan_usb_fd_decode_overrun(struct pcan_usb_fd_if *usb_if, |
| 604 | struct pucan_msg *rx_msg) |
| 605 | { |
| 606 | struct pcan_ufd_ovr_msg *ov = (struct pcan_ufd_ovr_msg *)rx_msg; |
| 607 | struct peak_usb_device *dev = usb_if->dev[pufd_omsg_get_channel(ov)]; |
| 608 | struct net_device *netdev = dev->netdev; |
| 609 | struct can_frame *cf; |
| 610 | struct sk_buff *skb; |
| 611 | |
| 612 | /* allocate an skb to store the error frame */ |
| 613 | skb = alloc_can_err_skb(netdev, &cf); |
| 614 | if (!skb) |
| 615 | return -ENOMEM; |
| 616 | |
| 617 | cf->can_id |= CAN_ERR_CRTL; |
| 618 | cf->data[1] |= CAN_ERR_CRTL_RX_OVERFLOW; |
| 619 | |
| 620 | peak_usb_netif_rx(skb, &usb_if->time_ref, |
| 621 | le32_to_cpu(ov->ts_low), le32_to_cpu(ov->ts_high)); |
| 622 | |
| 623 | netdev->stats.rx_over_errors++; |
| 624 | netdev->stats.rx_errors++; |
| 625 | |
| 626 | return 0; |
| 627 | } |
| 628 | |
| 629 | /* handle USB calibration message */ |
| 630 | static void pcan_usb_fd_decode_ts(struct pcan_usb_fd_if *usb_if, |
| 631 | struct pucan_msg *rx_msg) |
| 632 | { |
| 633 | struct pcan_ufd_ts_msg *ts = (struct pcan_ufd_ts_msg *)rx_msg; |
| 634 | |
| 635 | /* should wait until clock is stabilized */ |
| 636 | if (usb_if->cm_ignore_count > 0) |
| 637 | usb_if->cm_ignore_count--; |
| 638 | else |
| 639 | peak_usb_set_ts_now(&usb_if->time_ref, le32_to_cpu(ts->ts_low)); |
| 640 | } |
| 641 | |
| 642 | /* callback for bulk IN urb */ |
| 643 | static int pcan_usb_fd_decode_buf(struct peak_usb_device *dev, struct urb *urb) |
| 644 | { |
| 645 | struct pcan_usb_fd_if *usb_if = pcan_usb_fd_dev_if(dev); |
| 646 | struct net_device *netdev = dev->netdev; |
| 647 | struct pucan_msg *rx_msg; |
| 648 | u8 *msg_ptr, *msg_end; |
| 649 | int err = 0; |
| 650 | |
| 651 | /* loop reading all the records from the incoming message */ |
| 652 | msg_ptr = urb->transfer_buffer; |
| 653 | msg_end = urb->transfer_buffer + urb->actual_length; |
| 654 | for (; msg_ptr < msg_end;) { |
| 655 | u16 rx_msg_type, rx_msg_size; |
| 656 | |
| 657 | rx_msg = (struct pucan_msg *)msg_ptr; |
| 658 | if (!rx_msg->size) { |
| 659 | /* null packet found: end of list */ |
| 660 | break; |
| 661 | } |
| 662 | |
| 663 | rx_msg_size = le16_to_cpu(rx_msg->size); |
| 664 | rx_msg_type = le16_to_cpu(rx_msg->type); |
| 665 | |
| 666 | /* check if the record goes out of current packet */ |
| 667 | if (msg_ptr + rx_msg_size > msg_end) { |
| 668 | netdev_err(netdev, |
| 669 | "got frag rec: should inc usb rx buf sze\n"); |
| 670 | err = -EBADMSG; |
| 671 | break; |
| 672 | } |
| 673 | |
| 674 | switch (rx_msg_type) { |
| 675 | case PUCAN_MSG_CAN_RX: |
| 676 | err = pcan_usb_fd_decode_canmsg(usb_if, rx_msg); |
| 677 | if (err < 0) |
| 678 | goto fail; |
| 679 | break; |
| 680 | |
| 681 | case PCAN_UFD_MSG_CALIBRATION: |
| 682 | pcan_usb_fd_decode_ts(usb_if, rx_msg); |
| 683 | break; |
| 684 | |
| 685 | case PUCAN_MSG_ERROR: |
| 686 | err = pcan_usb_fd_decode_error(usb_if, rx_msg); |
| 687 | if (err < 0) |
| 688 | goto fail; |
| 689 | break; |
| 690 | |
| 691 | case PUCAN_MSG_STATUS: |
| 692 | err = pcan_usb_fd_decode_status(usb_if, rx_msg); |
| 693 | if (err < 0) |
| 694 | goto fail; |
| 695 | break; |
| 696 | |
| 697 | case PCAN_UFD_MSG_OVERRUN: |
| 698 | err = pcan_usb_fd_decode_overrun(usb_if, rx_msg); |
| 699 | if (err < 0) |
| 700 | goto fail; |
| 701 | break; |
| 702 | |
| 703 | default: |
| 704 | netdev_err(netdev, |
| 705 | "unhandled msg type 0x%02x (%d): ignored\n", |
| 706 | rx_msg_type, rx_msg_type); |
| 707 | break; |
| 708 | } |
| 709 | |
| 710 | msg_ptr += rx_msg_size; |
| 711 | } |
| 712 | |
| 713 | fail: |
| 714 | if (err) |
| 715 | pcan_dump_mem("received msg", |
| 716 | urb->transfer_buffer, urb->actual_length); |
| 717 | return err; |
| 718 | } |
| 719 | |
| 720 | /* CAN/CANFD frames encoding callback */ |
| 721 | static int pcan_usb_fd_encode_msg(struct peak_usb_device *dev, |
| 722 | struct sk_buff *skb, u8 *obuf, size_t *size) |
| 723 | { |
| 724 | struct pucan_tx_msg *tx_msg = (struct pucan_tx_msg *)obuf; |
| 725 | struct canfd_frame *cfd = (struct canfd_frame *)skb->data; |
| 726 | u16 tx_msg_size, tx_msg_flags; |
| 727 | u8 can_dlc; |
| 728 | |
| 729 | tx_msg_size = ALIGN(sizeof(struct pucan_tx_msg) + cfd->len, 4); |
| 730 | tx_msg->size = cpu_to_le16(tx_msg_size); |
| 731 | tx_msg->type = cpu_to_le16(PUCAN_MSG_CAN_TX); |
| 732 | |
| 733 | tx_msg_flags = 0; |
| 734 | if (cfd->can_id & CAN_EFF_FLAG) { |
| 735 | tx_msg_flags |= PUCAN_MSG_EXT_ID; |
| 736 | tx_msg->can_id = cpu_to_le32(cfd->can_id & CAN_EFF_MASK); |
| 737 | } else { |
| 738 | tx_msg->can_id = cpu_to_le32(cfd->can_id & CAN_SFF_MASK); |
| 739 | } |
| 740 | |
| 741 | if (can_is_canfd_skb(skb)) { |
| 742 | /* considering a CANFD frame */ |
| 743 | can_dlc = can_len2dlc(cfd->len); |
| 744 | |
| 745 | tx_msg_flags |= PUCAN_MSG_EXT_DATA_LEN; |
| 746 | |
| 747 | if (cfd->flags & CANFD_BRS) |
| 748 | tx_msg_flags |= PUCAN_MSG_BITRATE_SWITCH; |
| 749 | |
| 750 | if (cfd->flags & CANFD_ESI) |
| 751 | tx_msg_flags |= PUCAN_MSG_ERROR_STATE_IND; |
| 752 | } else { |
| 753 | /* CAND 2.0 frames */ |
| 754 | can_dlc = cfd->len; |
| 755 | |
| 756 | if (cfd->can_id & CAN_RTR_FLAG) |
| 757 | tx_msg_flags |= PUCAN_MSG_RTR; |
| 758 | } |
| 759 | |
| 760 | tx_msg->flags = cpu_to_le16(tx_msg_flags); |
| 761 | tx_msg->channel_dlc = PUCAN_MSG_CHANNEL_DLC(dev->ctrl_idx, can_dlc); |
| 762 | memcpy(tx_msg->d, cfd->data, cfd->len); |
| 763 | |
| 764 | /* add null size message to tag the end (messages are 32-bits aligned) |
| 765 | */ |
| 766 | tx_msg = (struct pucan_tx_msg *)(obuf + tx_msg_size); |
| 767 | |
| 768 | tx_msg->size = 0; |
| 769 | |
| 770 | /* set the whole size of the USB packet to send */ |
| 771 | *size = tx_msg_size + sizeof(u32); |
| 772 | |
| 773 | return 0; |
| 774 | } |
| 775 | |
| 776 | /* start the interface (last chance before set bus on) */ |
| 777 | static int pcan_usb_fd_start(struct peak_usb_device *dev) |
| 778 | { |
| 779 | struct pcan_usb_fd_device *pdev = |
| 780 | container_of(dev, struct pcan_usb_fd_device, dev); |
| 781 | int err; |
| 782 | |
| 783 | /* set filter mode: all acceptance */ |
| 784 | err = pcan_usb_fd_set_filter_std(dev, -1, 0xffffffff); |
| 785 | if (err) |
| 786 | return err; |
| 787 | |
| 788 | /* opening first device: */ |
| 789 | if (pdev->usb_if->dev_opened_count == 0) { |
| 790 | /* reset time_ref */ |
| 791 | peak_usb_init_time_ref(&pdev->usb_if->time_ref, |
| 792 | &pcan_usb_pro_fd); |
| 793 | |
| 794 | /* enable USB calibration messages */ |
Stephane Grosjean | 3ef5247 | 2015-03-16 11:57:52 +0100 | [diff] [blame] | 795 | err = pcan_usb_fd_set_options(dev, 1, |
| 796 | PUCAN_OPTION_ERROR, |
| 797 | PCAN_UFD_FLTEXT_CALIBRATION); |
Stephane Grosjean | 0a25e1f | 2015-01-23 11:31:25 +0100 | [diff] [blame] | 798 | } |
| 799 | |
| 800 | pdev->usb_if->dev_opened_count++; |
| 801 | |
| 802 | /* reset cached error counters */ |
| 803 | pdev->bec.txerr = 0; |
| 804 | pdev->bec.rxerr = 0; |
| 805 | |
| 806 | return err; |
| 807 | } |
| 808 | |
| 809 | /* socket callback used to copy berr counters values receieved through USB */ |
| 810 | static int pcan_usb_fd_get_berr_counter(const struct net_device *netdev, |
| 811 | struct can_berr_counter *bec) |
| 812 | { |
| 813 | struct peak_usb_device *dev = netdev_priv(netdev); |
| 814 | struct pcan_usb_fd_device *pdev = |
| 815 | container_of(dev, struct pcan_usb_fd_device, dev); |
| 816 | |
| 817 | *bec = pdev->bec; |
| 818 | |
| 819 | /* must return 0 */ |
| 820 | return 0; |
| 821 | } |
| 822 | |
| 823 | /* stop interface (last chance before set bus off) */ |
| 824 | static int pcan_usb_fd_stop(struct peak_usb_device *dev) |
| 825 | { |
| 826 | struct pcan_usb_fd_device *pdev = |
| 827 | container_of(dev, struct pcan_usb_fd_device, dev); |
| 828 | |
| 829 | /* turn off special msgs for that interface if no other dev opened */ |
| 830 | if (pdev->usb_if->dev_opened_count == 1) |
Stephane Grosjean | 3ef5247 | 2015-03-16 11:57:52 +0100 | [diff] [blame] | 831 | pcan_usb_fd_set_options(dev, 0, |
| 832 | PUCAN_OPTION_ERROR, |
| 833 | PCAN_UFD_FLTEXT_CALIBRATION); |
Stephane Grosjean | 0a25e1f | 2015-01-23 11:31:25 +0100 | [diff] [blame] | 834 | pdev->usb_if->dev_opened_count--; |
| 835 | |
| 836 | return 0; |
| 837 | } |
| 838 | |
| 839 | /* called when probing, to initialize a device object */ |
| 840 | static int pcan_usb_fd_init(struct peak_usb_device *dev) |
| 841 | { |
| 842 | struct pcan_usb_fd_device *pdev = |
| 843 | container_of(dev, struct pcan_usb_fd_device, dev); |
| 844 | int i, err = -ENOMEM; |
| 845 | |
| 846 | /* do this for 1st channel only */ |
| 847 | if (!dev->prev_siblings) { |
| 848 | /* allocate netdevices common structure attached to first one */ |
| 849 | pdev->usb_if = kzalloc(sizeof(*pdev->usb_if), GFP_KERNEL); |
| 850 | if (!pdev->usb_if) |
| 851 | goto err_out; |
| 852 | |
| 853 | /* allocate command buffer once for all for the interface */ |
| 854 | pdev->cmd_buffer_addr = kmalloc(PCAN_UFD_CMD_BUFFER_SIZE, |
| 855 | GFP_KERNEL); |
| 856 | if (!pdev->cmd_buffer_addr) |
| 857 | goto err_out_1; |
| 858 | |
| 859 | /* number of ts msgs to ignore before taking one into account */ |
| 860 | pdev->usb_if->cm_ignore_count = 5; |
| 861 | |
| 862 | err = pcan_usb_pro_send_req(dev, PCAN_USBPRO_REQ_INFO, |
| 863 | PCAN_USBPRO_INFO_FW, |
| 864 | &pdev->usb_if->fw_info, |
| 865 | sizeof(pdev->usb_if->fw_info)); |
| 866 | if (err) { |
| 867 | dev_err(dev->netdev->dev.parent, |
| 868 | "unable to read %s firmware info (err %d)\n", |
| 869 | dev->adapter->name, err); |
| 870 | goto err_out_2; |
| 871 | } |
| 872 | |
| 873 | /* explicit use of dev_xxx() instead of netdev_xxx() here: |
| 874 | * information displayed are related to the device itself, not |
| 875 | * to the canx (channel) device. |
| 876 | */ |
| 877 | dev_info(dev->netdev->dev.parent, |
| 878 | "PEAK-System %s v%u fw v%u.%u.%u (%u channels)\n", |
| 879 | dev->adapter->name, pdev->usb_if->fw_info.hw_version, |
| 880 | pdev->usb_if->fw_info.fw_version[0], |
| 881 | pdev->usb_if->fw_info.fw_version[1], |
| 882 | pdev->usb_if->fw_info.fw_version[2], |
| 883 | dev->adapter->ctrl_count); |
| 884 | |
Stephane Grosjean | 0f251e4 | 2015-03-16 11:57:53 +0100 | [diff] [blame] | 885 | /* check for ability to switch between ISO/non-ISO modes */ |
| 886 | if (pdev->usb_if->fw_info.fw_version[0] >= 2) { |
| 887 | /* firmware >= 2.x supports ISO/non-ISO switching */ |
| 888 | dev->can.ctrlmode_supported |= CAN_CTRLMODE_FD_NON_ISO; |
| 889 | } else { |
| 890 | /* firmware < 2.x only supports fixed(!) non-ISO */ |
| 891 | dev->can.ctrlmode |= CAN_CTRLMODE_FD_NON_ISO; |
| 892 | } |
Stephane Grosjean | 0a25e1f | 2015-01-23 11:31:25 +0100 | [diff] [blame] | 893 | |
| 894 | /* tell the hardware the can driver is running */ |
| 895 | err = pcan_usb_fd_drv_loaded(dev, 1); |
| 896 | if (err) { |
| 897 | dev_err(dev->netdev->dev.parent, |
| 898 | "unable to tell %s driver is loaded (err %d)\n", |
| 899 | dev->adapter->name, err); |
| 900 | goto err_out_2; |
| 901 | } |
| 902 | } else { |
| 903 | /* otherwise, simply copy previous sibling's values */ |
| 904 | struct pcan_usb_fd_device *ppdev = |
| 905 | container_of(dev->prev_siblings, |
| 906 | struct pcan_usb_fd_device, dev); |
| 907 | |
| 908 | pdev->usb_if = ppdev->usb_if; |
| 909 | pdev->cmd_buffer_addr = ppdev->cmd_buffer_addr; |
Stephane Grosjean | b0d4724 | 2015-03-02 11:54:38 +0100 | [diff] [blame] | 910 | |
| 911 | /* do a copy of the ctrlmode[_supported] too */ |
| 912 | dev->can.ctrlmode = ppdev->dev.can.ctrlmode; |
| 913 | dev->can.ctrlmode_supported = ppdev->dev.can.ctrlmode_supported; |
Stephane Grosjean | 0a25e1f | 2015-01-23 11:31:25 +0100 | [diff] [blame] | 914 | } |
| 915 | |
| 916 | pdev->usb_if->dev[dev->ctrl_idx] = dev; |
| 917 | dev->device_number = |
| 918 | le32_to_cpu(pdev->usb_if->fw_info.dev_id[dev->ctrl_idx]); |
| 919 | |
| 920 | /* set clock domain */ |
| 921 | for (i = 0; i < ARRAY_SIZE(pcan_usb_fd_clk_freq); i++) |
| 922 | if (dev->adapter->clock.freq == pcan_usb_fd_clk_freq[i]) |
| 923 | break; |
| 924 | |
| 925 | if (i >= ARRAY_SIZE(pcan_usb_fd_clk_freq)) { |
| 926 | dev_warn(dev->netdev->dev.parent, |
| 927 | "incompatible clock frequencies\n"); |
| 928 | err = -EINVAL; |
| 929 | goto err_out_2; |
| 930 | } |
| 931 | |
| 932 | pcan_usb_fd_set_clock_domain(dev, i); |
| 933 | |
| 934 | /* set LED in default state (end of init phase) */ |
| 935 | pcan_usb_fd_set_can_led(dev, PCAN_UFD_LED_DEF); |
| 936 | |
| 937 | return 0; |
| 938 | |
| 939 | err_out_2: |
| 940 | kfree(pdev->cmd_buffer_addr); |
| 941 | err_out_1: |
| 942 | kfree(pdev->usb_if); |
| 943 | err_out: |
| 944 | return err; |
| 945 | } |
| 946 | |
| 947 | /* called when driver module is being unloaded */ |
| 948 | static void pcan_usb_fd_exit(struct peak_usb_device *dev) |
| 949 | { |
| 950 | struct pcan_usb_fd_device *pdev = |
| 951 | container_of(dev, struct pcan_usb_fd_device, dev); |
| 952 | |
| 953 | /* when rmmod called before unplug and if down, should reset things |
| 954 | * before leaving |
| 955 | */ |
| 956 | if (dev->can.state != CAN_STATE_STOPPED) { |
| 957 | /* set bus off on the corresponding channel */ |
| 958 | pcan_usb_fd_set_bus(dev, 0); |
| 959 | } |
| 960 | |
| 961 | /* switch off corresponding CAN LEDs */ |
| 962 | pcan_usb_fd_set_can_led(dev, PCAN_UFD_LED_OFF); |
| 963 | |
| 964 | /* if channel #0 (only) */ |
| 965 | if (dev->ctrl_idx == 0) { |
| 966 | /* turn off calibration message if any device were opened */ |
| 967 | if (pdev->usb_if->dev_opened_count > 0) |
Stephane Grosjean | 3ef5247 | 2015-03-16 11:57:52 +0100 | [diff] [blame] | 968 | pcan_usb_fd_set_options(dev, 0, |
| 969 | PUCAN_OPTION_ERROR, |
| 970 | PCAN_UFD_FLTEXT_CALIBRATION); |
Stephane Grosjean | 0a25e1f | 2015-01-23 11:31:25 +0100 | [diff] [blame] | 971 | |
| 972 | /* tell USB adapter that the driver is being unloaded */ |
| 973 | pcan_usb_fd_drv_loaded(dev, 0); |
| 974 | } |
| 975 | } |
| 976 | |
| 977 | /* called when the USB adapter is unplugged */ |
| 978 | static void pcan_usb_fd_free(struct peak_usb_device *dev) |
| 979 | { |
| 980 | /* last device: can free shared objects now */ |
| 981 | if (!dev->prev_siblings && !dev->next_siblings) { |
| 982 | struct pcan_usb_fd_device *pdev = |
| 983 | container_of(dev, struct pcan_usb_fd_device, dev); |
| 984 | |
| 985 | /* free commands buffer */ |
| 986 | kfree(pdev->cmd_buffer_addr); |
| 987 | |
| 988 | /* free usb interface object */ |
| 989 | kfree(pdev->usb_if); |
| 990 | } |
| 991 | } |
| 992 | |
| 993 | /* describes the PCAN-USB FD adapter */ |
Marc Kleine-Budde | 06b23f7 | 2015-08-06 09:48:34 +0200 | [diff] [blame] | 994 | static const struct can_bittiming_const pcan_usb_fd_const = { |
| 995 | .name = "pcan_usb_fd", |
| 996 | .tseg1_min = 1, |
Stephane Grosjean | fe5b406 | 2016-12-01 11:41:11 +0100 | [diff] [blame] | 997 | .tseg1_max = (1 << PUCAN_TSLOW_TSGEG1_BITS), |
Marc Kleine-Budde | 06b23f7 | 2015-08-06 09:48:34 +0200 | [diff] [blame] | 998 | .tseg2_min = 1, |
Stephane Grosjean | fe5b406 | 2016-12-01 11:41:11 +0100 | [diff] [blame] | 999 | .tseg2_max = (1 << PUCAN_TSLOW_TSGEG2_BITS), |
| 1000 | .sjw_max = (1 << PUCAN_TSLOW_SJW_BITS), |
Marc Kleine-Budde | 06b23f7 | 2015-08-06 09:48:34 +0200 | [diff] [blame] | 1001 | .brp_min = 1, |
Stephane Grosjean | fe5b406 | 2016-12-01 11:41:11 +0100 | [diff] [blame] | 1002 | .brp_max = (1 << PUCAN_TSLOW_BRP_BITS), |
Marc Kleine-Budde | 06b23f7 | 2015-08-06 09:48:34 +0200 | [diff] [blame] | 1003 | .brp_inc = 1, |
| 1004 | }; |
| 1005 | |
| 1006 | static const struct can_bittiming_const pcan_usb_fd_data_const = { |
| 1007 | .name = "pcan_usb_fd", |
| 1008 | .tseg1_min = 1, |
Stephane Grosjean | fe5b406 | 2016-12-01 11:41:11 +0100 | [diff] [blame] | 1009 | .tseg1_max = (1 << PUCAN_TFAST_TSGEG1_BITS), |
Marc Kleine-Budde | 06b23f7 | 2015-08-06 09:48:34 +0200 | [diff] [blame] | 1010 | .tseg2_min = 1, |
Stephane Grosjean | fe5b406 | 2016-12-01 11:41:11 +0100 | [diff] [blame] | 1011 | .tseg2_max = (1 << PUCAN_TFAST_TSGEG2_BITS), |
| 1012 | .sjw_max = (1 << PUCAN_TFAST_SJW_BITS), |
Marc Kleine-Budde | 06b23f7 | 2015-08-06 09:48:34 +0200 | [diff] [blame] | 1013 | .brp_min = 1, |
Stephane Grosjean | fe5b406 | 2016-12-01 11:41:11 +0100 | [diff] [blame] | 1014 | .brp_max = (1 << PUCAN_TFAST_BRP_BITS), |
Marc Kleine-Budde | 06b23f7 | 2015-08-06 09:48:34 +0200 | [diff] [blame] | 1015 | .brp_inc = 1, |
| 1016 | }; |
| 1017 | |
Stephane Grosjean | 0a25e1f | 2015-01-23 11:31:25 +0100 | [diff] [blame] | 1018 | const struct peak_usb_adapter pcan_usb_fd = { |
| 1019 | .name = "PCAN-USB FD", |
| 1020 | .device_id = PCAN_USBFD_PRODUCT_ID, |
| 1021 | .ctrl_count = PCAN_USBFD_CHANNEL_COUNT, |
| 1022 | .ctrlmode_supported = CAN_CTRLMODE_FD | |
| 1023 | CAN_CTRLMODE_3_SAMPLES | CAN_CTRLMODE_LISTENONLY, |
| 1024 | .clock = { |
| 1025 | .freq = PCAN_UFD_CRYSTAL_HZ, |
| 1026 | }, |
Marc Kleine-Budde | 06b23f7 | 2015-08-06 09:48:34 +0200 | [diff] [blame] | 1027 | .bittiming_const = &pcan_usb_fd_const, |
| 1028 | .data_bittiming_const = &pcan_usb_fd_data_const, |
Stephane Grosjean | 0a25e1f | 2015-01-23 11:31:25 +0100 | [diff] [blame] | 1029 | |
| 1030 | /* size of device private data */ |
| 1031 | .sizeof_dev_private = sizeof(struct pcan_usb_fd_device), |
| 1032 | |
| 1033 | /* timestamps usage */ |
| 1034 | .ts_used_bits = 32, |
| 1035 | .ts_period = 1000000, /* calibration period in ts. */ |
| 1036 | .us_per_ts_scale = 1, /* us = (ts * scale) >> shift */ |
| 1037 | .us_per_ts_shift = 0, |
| 1038 | |
| 1039 | /* give here messages in/out endpoints */ |
| 1040 | .ep_msg_in = PCAN_USBPRO_EP_MSGIN, |
| 1041 | .ep_msg_out = {PCAN_USBPRO_EP_MSGOUT_0}, |
| 1042 | |
| 1043 | /* size of rx/tx usb buffers */ |
| 1044 | .rx_buffer_size = PCAN_UFD_RX_BUFFER_SIZE, |
| 1045 | .tx_buffer_size = PCAN_UFD_TX_BUFFER_SIZE, |
| 1046 | |
| 1047 | /* device callbacks */ |
| 1048 | .intf_probe = pcan_usb_pro_probe, /* same as PCAN-USB Pro */ |
| 1049 | .dev_init = pcan_usb_fd_init, |
| 1050 | |
| 1051 | .dev_exit = pcan_usb_fd_exit, |
| 1052 | .dev_free = pcan_usb_fd_free, |
| 1053 | .dev_set_bus = pcan_usb_fd_set_bus, |
| 1054 | .dev_set_bittiming = pcan_usb_fd_set_bittiming_slow, |
| 1055 | .dev_set_data_bittiming = pcan_usb_fd_set_bittiming_fast, |
| 1056 | .dev_decode_buf = pcan_usb_fd_decode_buf, |
| 1057 | .dev_start = pcan_usb_fd_start, |
| 1058 | .dev_stop = pcan_usb_fd_stop, |
| 1059 | .dev_restart_async = pcan_usb_fd_restart_async, |
| 1060 | .dev_encode_msg = pcan_usb_fd_encode_msg, |
| 1061 | |
| 1062 | .do_get_berr_counter = pcan_usb_fd_get_berr_counter, |
| 1063 | }; |
| 1064 | |
| 1065 | /* describes the PCAN-USB Pro FD adapter */ |
Marc Kleine-Budde | 06b23f7 | 2015-08-06 09:48:34 +0200 | [diff] [blame] | 1066 | static const struct can_bittiming_const pcan_usb_pro_fd_const = { |
| 1067 | .name = "pcan_usb_pro_fd", |
| 1068 | .tseg1_min = 1, |
Stephane Grosjean | fe5b406 | 2016-12-01 11:41:11 +0100 | [diff] [blame] | 1069 | .tseg1_max = (1 << PUCAN_TSLOW_TSGEG1_BITS), |
Marc Kleine-Budde | 06b23f7 | 2015-08-06 09:48:34 +0200 | [diff] [blame] | 1070 | .tseg2_min = 1, |
Stephane Grosjean | fe5b406 | 2016-12-01 11:41:11 +0100 | [diff] [blame] | 1071 | .tseg2_max = (1 << PUCAN_TSLOW_TSGEG2_BITS), |
| 1072 | .sjw_max = (1 << PUCAN_TSLOW_SJW_BITS), |
Marc Kleine-Budde | 06b23f7 | 2015-08-06 09:48:34 +0200 | [diff] [blame] | 1073 | .brp_min = 1, |
Stephane Grosjean | fe5b406 | 2016-12-01 11:41:11 +0100 | [diff] [blame] | 1074 | .brp_max = (1 << PUCAN_TSLOW_BRP_BITS), |
Marc Kleine-Budde | 06b23f7 | 2015-08-06 09:48:34 +0200 | [diff] [blame] | 1075 | .brp_inc = 1, |
| 1076 | }; |
| 1077 | |
| 1078 | static const struct can_bittiming_const pcan_usb_pro_fd_data_const = { |
| 1079 | .name = "pcan_usb_pro_fd", |
| 1080 | .tseg1_min = 1, |
Stephane Grosjean | fe5b406 | 2016-12-01 11:41:11 +0100 | [diff] [blame] | 1081 | .tseg1_max = (1 << PUCAN_TFAST_TSGEG1_BITS), |
Marc Kleine-Budde | 06b23f7 | 2015-08-06 09:48:34 +0200 | [diff] [blame] | 1082 | .tseg2_min = 1, |
Stephane Grosjean | fe5b406 | 2016-12-01 11:41:11 +0100 | [diff] [blame] | 1083 | .tseg2_max = (1 << PUCAN_TFAST_TSGEG2_BITS), |
| 1084 | .sjw_max = (1 << PUCAN_TFAST_SJW_BITS), |
Marc Kleine-Budde | 06b23f7 | 2015-08-06 09:48:34 +0200 | [diff] [blame] | 1085 | .brp_min = 1, |
Stephane Grosjean | fe5b406 | 2016-12-01 11:41:11 +0100 | [diff] [blame] | 1086 | .brp_max = (1 << PUCAN_TFAST_BRP_BITS), |
Marc Kleine-Budde | 06b23f7 | 2015-08-06 09:48:34 +0200 | [diff] [blame] | 1087 | .brp_inc = 1, |
| 1088 | }; |
| 1089 | |
Stephane Grosjean | 0a25e1f | 2015-01-23 11:31:25 +0100 | [diff] [blame] | 1090 | const struct peak_usb_adapter pcan_usb_pro_fd = { |
| 1091 | .name = "PCAN-USB Pro FD", |
| 1092 | .device_id = PCAN_USBPROFD_PRODUCT_ID, |
| 1093 | .ctrl_count = PCAN_USBPROFD_CHANNEL_COUNT, |
| 1094 | .ctrlmode_supported = CAN_CTRLMODE_FD | |
| 1095 | CAN_CTRLMODE_3_SAMPLES | CAN_CTRLMODE_LISTENONLY, |
| 1096 | .clock = { |
| 1097 | .freq = PCAN_UFD_CRYSTAL_HZ, |
| 1098 | }, |
Marc Kleine-Budde | 06b23f7 | 2015-08-06 09:48:34 +0200 | [diff] [blame] | 1099 | .bittiming_const = &pcan_usb_pro_fd_const, |
| 1100 | .data_bittiming_const = &pcan_usb_pro_fd_data_const, |
Stephane Grosjean | 0a25e1f | 2015-01-23 11:31:25 +0100 | [diff] [blame] | 1101 | |
| 1102 | /* size of device private data */ |
| 1103 | .sizeof_dev_private = sizeof(struct pcan_usb_fd_device), |
| 1104 | |
| 1105 | /* timestamps usage */ |
| 1106 | .ts_used_bits = 32, |
| 1107 | .ts_period = 1000000, /* calibration period in ts. */ |
| 1108 | .us_per_ts_scale = 1, /* us = (ts * scale) >> shift */ |
| 1109 | .us_per_ts_shift = 0, |
| 1110 | |
| 1111 | /* give here messages in/out endpoints */ |
| 1112 | .ep_msg_in = PCAN_USBPRO_EP_MSGIN, |
| 1113 | .ep_msg_out = {PCAN_USBPRO_EP_MSGOUT_0, PCAN_USBPRO_EP_MSGOUT_1}, |
| 1114 | |
| 1115 | /* size of rx/tx usb buffers */ |
| 1116 | .rx_buffer_size = PCAN_UFD_RX_BUFFER_SIZE, |
| 1117 | .tx_buffer_size = PCAN_UFD_TX_BUFFER_SIZE, |
| 1118 | |
| 1119 | /* device callbacks */ |
| 1120 | .intf_probe = pcan_usb_pro_probe, /* same as PCAN-USB Pro */ |
| 1121 | .dev_init = pcan_usb_fd_init, |
| 1122 | |
| 1123 | .dev_exit = pcan_usb_fd_exit, |
| 1124 | .dev_free = pcan_usb_fd_free, |
| 1125 | .dev_set_bus = pcan_usb_fd_set_bus, |
| 1126 | .dev_set_bittiming = pcan_usb_fd_set_bittiming_slow, |
| 1127 | .dev_set_data_bittiming = pcan_usb_fd_set_bittiming_fast, |
| 1128 | .dev_decode_buf = pcan_usb_fd_decode_buf, |
| 1129 | .dev_start = pcan_usb_fd_start, |
| 1130 | .dev_stop = pcan_usb_fd_stop, |
| 1131 | .dev_restart_async = pcan_usb_fd_restart_async, |
| 1132 | .dev_encode_msg = pcan_usb_fd_encode_msg, |
| 1133 | |
| 1134 | .do_get_berr_counter = pcan_usb_fd_get_berr_counter, |
| 1135 | }; |
Stephane Grosjean | f00b534 | 2016-12-01 11:41:12 +0100 | [diff] [blame] | 1136 | |
| 1137 | /* describes the PCAN-USB X6 adapter */ |
| 1138 | static const struct can_bittiming_const pcan_usb_x6_const = { |
| 1139 | .name = "pcan_usb_x6", |
| 1140 | .tseg1_min = 1, |
| 1141 | .tseg1_max = (1 << PUCAN_TSLOW_TSGEG1_BITS), |
| 1142 | .tseg2_min = 1, |
| 1143 | .tseg2_max = (1 << PUCAN_TSLOW_TSGEG2_BITS), |
| 1144 | .sjw_max = (1 << PUCAN_TSLOW_SJW_BITS), |
| 1145 | .brp_min = 1, |
| 1146 | .brp_max = (1 << PUCAN_TSLOW_BRP_BITS), |
| 1147 | .brp_inc = 1, |
| 1148 | }; |
| 1149 | |
| 1150 | static const struct can_bittiming_const pcan_usb_x6_data_const = { |
| 1151 | .name = "pcan_usb_x6", |
| 1152 | .tseg1_min = 1, |
| 1153 | .tseg1_max = (1 << PUCAN_TFAST_TSGEG1_BITS), |
| 1154 | .tseg2_min = 1, |
| 1155 | .tseg2_max = (1 << PUCAN_TFAST_TSGEG2_BITS), |
| 1156 | .sjw_max = (1 << PUCAN_TFAST_SJW_BITS), |
| 1157 | .brp_min = 1, |
| 1158 | .brp_max = (1 << PUCAN_TFAST_BRP_BITS), |
| 1159 | .brp_inc = 1, |
| 1160 | }; |
| 1161 | |
| 1162 | const struct peak_usb_adapter pcan_usb_x6 = { |
| 1163 | .name = "PCAN-USB X6", |
| 1164 | .device_id = PCAN_USBX6_PRODUCT_ID, |
| 1165 | .ctrl_count = PCAN_USBPROFD_CHANNEL_COUNT, |
| 1166 | .ctrlmode_supported = CAN_CTRLMODE_FD | |
| 1167 | CAN_CTRLMODE_3_SAMPLES | CAN_CTRLMODE_LISTENONLY, |
| 1168 | .clock = { |
| 1169 | .freq = PCAN_UFD_CRYSTAL_HZ, |
| 1170 | }, |
| 1171 | .bittiming_const = &pcan_usb_x6_const, |
| 1172 | .data_bittiming_const = &pcan_usb_x6_data_const, |
| 1173 | |
| 1174 | /* size of device private data */ |
| 1175 | .sizeof_dev_private = sizeof(struct pcan_usb_fd_device), |
| 1176 | |
| 1177 | /* timestamps usage */ |
| 1178 | .ts_used_bits = 32, |
| 1179 | .ts_period = 1000000, /* calibration period in ts. */ |
| 1180 | .us_per_ts_scale = 1, /* us = (ts * scale) >> shift */ |
| 1181 | .us_per_ts_shift = 0, |
| 1182 | |
| 1183 | /* give here messages in/out endpoints */ |
| 1184 | .ep_msg_in = PCAN_USBPRO_EP_MSGIN, |
| 1185 | .ep_msg_out = {PCAN_USBPRO_EP_MSGOUT_0, PCAN_USBPRO_EP_MSGOUT_1}, |
| 1186 | |
| 1187 | /* size of rx/tx usb buffers */ |
| 1188 | .rx_buffer_size = PCAN_UFD_RX_BUFFER_SIZE, |
| 1189 | .tx_buffer_size = PCAN_UFD_TX_BUFFER_SIZE, |
| 1190 | |
| 1191 | /* device callbacks */ |
| 1192 | .intf_probe = pcan_usb_pro_probe, /* same as PCAN-USB Pro */ |
| 1193 | .dev_init = pcan_usb_fd_init, |
| 1194 | |
| 1195 | .dev_exit = pcan_usb_fd_exit, |
| 1196 | .dev_free = pcan_usb_fd_free, |
| 1197 | .dev_set_bus = pcan_usb_fd_set_bus, |
| 1198 | .dev_set_bittiming = pcan_usb_fd_set_bittiming_slow, |
| 1199 | .dev_set_data_bittiming = pcan_usb_fd_set_bittiming_fast, |
| 1200 | .dev_decode_buf = pcan_usb_fd_decode_buf, |
| 1201 | .dev_start = pcan_usb_fd_start, |
| 1202 | .dev_stop = pcan_usb_fd_stop, |
| 1203 | .dev_restart_async = pcan_usb_fd_restart_async, |
| 1204 | .dev_encode_msg = pcan_usb_fd_encode_msg, |
| 1205 | |
| 1206 | .do_get_berr_counter = pcan_usb_fd_get_berr_counter, |
| 1207 | }; |