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/linux/drivers/char/ipmi/
H A Dssif_bmc.c28 /* Transaction includes the address, the command, the length and the PEC byte */
54 u8 pec; member
342 /* PEC - Start Read Address */ in calculate_response_part_pec()
343 part->pec = i2c_smbus_pec(0, &addr, 1); in calculate_response_part_pec()
344 /* PEC - SSIF Command */ in calculate_response_part_pec()
345 part->pec = i2c_smbus_pec(part->pec, &part->smbus_cmd, 1); in calculate_response_part_pec()
346 /* PEC - Restart Write Address */ in calculate_response_part_pec()
348 part->pec = i2c_smbus_pec(part->pec, &addr, 1); in calculate_response_part_pec()
349 part->pec = i2c_smbus_pec(part->pec, &part->length, 1); in calculate_response_part_pec()
351 part->pec = i2c_smbus_pec(part->pec, part->payload, part->length); in calculate_response_part_pec()
[all …]
/linux/drivers/net/mctp/
H A Dmctp-i3c.c26 /* One byte less to allow for the PEC */
28 /* 4 byte MCTP header, no data, 1 byte PEC */
108 u8 pec, addr; in mctp_i3c_read() local
145 /* check PEC, including address byte */ in mctp_i3c_read()
147 pec = i2c_smbus_pec(0, &addr, 1); in mctp_i3c_read()
148 pec = i2c_smbus_pec(pec, xfer.data.in, xfer.len - 1); in mctp_i3c_read()
149 if (pec != ((u8 *)xfer.data.in)[xfer.len - 1]) { in mctp_i3c_read()
155 /* Remove PEC */ in mctp_i3c_read()
368 u8 addr, pec; in mctp_i3c_xmit() local
394 /* Need a linear buffer with space for the PEC */ in mctp_i3c_xmit()
[all …]
H A Dmctp-i2c.c33 /* Allow space for dest_address, command, byte_count, data, PEC */
104 /* Count of bytes following byte_count, excluding PEC */
278 u8 pec, calc_pec; in mctp_i2c_recv() local
282 /* + 1 for the PEC */ in mctp_i2c_recv()
287 /* recvlen excludes PEC */ in mctp_i2c_recv()
301 pec = midev->rx_buffer[midev->rx_pos - 1]; in mctp_i2c_recv()
303 if (pec != calc_pec) { in mctp_i2c_recv()
503 /* Linear case with space, we can just append the PEC */ in mctp_i2c_xmit()
514 /* command, bytecount, data, pec */ in mctp_i2c_xmit()
/linux/arch/s390/pci/
H A Dpci_event.c35 u16 pec; /* PCI event code */ member
48 u16 pec; /* PCI event code */ member
300 zpci_dbg(3, "err fid:%x, fh:%x, pec:%x\n", in __zpci_event_error()
301 ccdf->fid, ccdf->fh, ccdf->pec); in __zpci_event_error()
322 pdev ? pci_name(pdev) : "n/a", ccdf->pec, ccdf->fid); in __zpci_event_error()
327 switch (ccdf->pec) { in __zpci_event_error()
392 zpci_dbg(3, "avl fid:%x, fh:%x, pec:%x\n", in __zpci_event_availability()
393 ccdf->fid, ccdf->fh, ccdf->pec); in __zpci_event_availability()
398 switch (ccdf->pec) { in __zpci_event_availability()
/linux/drivers/i2c/busses/
H A Di2c-amd8111.c150 #define AMD_SMB_PRTCL 0x00 /* protocol, PEC */
194 unsigned char protocol, len, pec, temp[2]; in amd8111_access() local
199 pec = (flags & I2C_CLIENT_PEC) ? AMD_SMB_PRTCL_PEC : 0; in amd8111_access()
244 protocol |= AMD_SMB_PRTCL_WORD_DATA | pec; in amd8111_access()
265 protocol |= AMD_SMB_PRTCL_BLOCK_DATA | pec; in amd8111_access()
300 protocol = AMD_SMB_PRTCL_PROC_CALL | pec; in amd8111_access()
319 protocol = AMD_SMB_PRTCL_BLOCK_PROC_CALL | pec; in amd8111_access()
H A Di2c-amd-asf-plat.c158 /* Enable PEC and PEC append */ in amd_asf_setup_target()
182 /* Enable PEC and PEC append */ in amd_asf_access()
203 /* Exclude the receive header and PEC */ in amd_asf_xfer()
H A Di2c-mlxbf.c210 /* Packet error check (PEC) value. */
237 #define MLXBF_I2C_MASTER_SEND_PEC_SHIFT 20 /* Send PEC byte when set to 1 */
275 /* Packet error check (PEC) value. */
293 #define MLXBF_I2C_SLAVE_SEND_PEC_SHIFT 21 /* Send PEC byte shift. */
666 /* Zero PEC byte. */ in mlxbf_i2c_smbus_enable()
1018 *data_len = length; /* including PEC byte. */ in mlxbf_i2c_smbus_blk_process_call_func()
1892 pec_en = 0; /* Disable PEC since it is not supported. */ in mlxbf_i2c_irq_send()
2037 bool read, pec; in mlxbf_i2c_smbus_xfer() local
2043 pec = flags & I2C_FUNC_SMBUS_PEC; in mlxbf_i2c_smbus_xfer()
2054 pec); in mlxbf_i2c_smbus_xfer()
[all …]
H A Di2c-npcm7xx.c127 #define NPCM_I2CPEC 0x16 /* PEC Data */
575 u16 PEC_mask; /* PEC bit mask per slave address */
1538 dev_info(bus->dev, "i2c%d register slave SA=0x%x, PEC=%d\n", bus->num, in npcm_i2c_reg_slave()
2262 /* for tx PEC is appended to buffer from i2c IF. PEC flag is ignored */ in npcm_i2c_master_start_xmit()
/linux/drivers/i3c/master/
H A Dast2600-i3c-master.c109 * if the PEC is disabled. We have no way to restrict the length of in ast2600_i3c_set_dat_ibi()
111 * PEC checking, which means we drop a byte of payload data in ast2600_i3c_set_dat_ibi()
115 "Enabling PEC workaround. IBI payloads will be truncated\n"); in ast2600_i3c_set_dat_ibi()
/linux/drivers/i2c/
H A Di2c-core-smbus.c61 static u8 i2c_smbus_msg_pec(u8 pec, struct i2c_msg *msg) in i2c_smbus_msg_pec() argument
65 pec = i2c_smbus_pec(pec, &addr, 1); in i2c_smbus_msg_pec()
68 return i2c_smbus_pec(pec, msg->buf, msg->len); in i2c_smbus_msg_pec()
89 pr_debug("Bad PEC 0x%02x vs. 0x%02x\n", in i2c_smbus_check_pec()
458 /* Compute PEC if first message is a write */ in i2c_smbus_xfer_emulated()
465 /* Ask for PEC if last message is a read */ in i2c_smbus_xfer_emulated()
479 /* Check PEC if last message is a read */ in i2c_smbus_xfer_emulated()
H A Di2c-dev.c427 * Setting the PEC flag here won't affect kernel drivers, in i2cdev_ioctl()
430 * the PEC flag already set, the i2c-dev driver won't see in i2cdev_ioctl()
613 * information and maybe a PEC flag. in i2cdev_open()
H A Di2c-smbus.c117 * use. We neither handle them, nor try to use PEC here. in smbus_alert()
/linux/include/uapi/linux/
H A Di2c.h50 * if used, the SMBus PEC); and this value will be incremented by the number
64 * with SMBus PEC. The transfer terminates with a NAK, or when all those
H A Di2c-dev.h37 #define I2C_PEC 0x0708 /* != 0 to use PEC with SMBus */
/linux/Documentation/i2c/
H A Dsmbus-protocol.rst246 Packet Error Checking (PEC)
251 PEC adds a CRC-8 error-checking byte to transfers using it, immediately
264 require PEC checksums.
H A Dfault-codes.rst60 may have a way to report PEC mismatches on writes from the
H A Ddev-interface.rst118 Selects SMBus PEC (packet error checking) generation and verification
/linux/Documentation/i2c/busses/
H A Di2c-amd8111.rst35 Supported. Both PEC and block process call support is implemented. Slave
H A Di2c-viapro.rst76 The CX700/VX800/VX820 additionally appears to support SMBus PEC, although
/linux/drivers/hwmon/
H A Dmax6621.c499 /* Set CONFIG0 register masking temperature alerts and PEC. */ in max6621_probe()
505 /* Set CONFIG1 register for PEC access retry number. */ in max6621_probe()
/linux/drivers/hwmon/pmbus/
H A Dpli1209bc.c17 * the page register is set to 1 will falsely enable PEC support. Disable
/linux/Documentation/ABI/testing/
H A Dsysfs-class-hwmon1068 What: /sys/class/hwmon/hwmonX/device/pec
1070 PEC support on I2C devices
/linux/arch/s390/include/asm/
H A Dctlreg.h204 unsigned long pec : 1; /* PAI extension control */ member
/linux/drivers/i2c/algos/
H A Di2c-algo-bit.c363 * the SMBus PEC was wrong. in sendbytes()
438 or 2 for a PEC transaction. */ in readbytes()
/linux/Documentation/images/
H A Dlogo.svg1579 inkscape:label="Left Pec Shadow"
1587 inkscape:label="Right Pec Shadow"
1594 inkscape:label="Middle Pec Shadow"
1608 inkscape:label="Left Pec Upper Shadow"
1616 inkscape:label="Right Pec Side Shadow"

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