fsi.h (2701B)
1/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ 2#ifndef _UAPI_LINUX_FSI_H 3#define _UAPI_LINUX_FSI_H 4 5#include <linux/types.h> 6#include <linux/ioctl.h> 7 8/* 9 * /dev/scom "raw" ioctl interface 10 * 11 * The driver supports a high level "read/write" interface which 12 * handles retries and converts the status to Linux error codes, 13 * however low level tools an debugger need to access the "raw" 14 * HW status information and interpret it themselves, so this 15 * ioctl interface is also provided for their use case. 16 */ 17 18/* Structure for SCOM read/write */ 19struct scom_access { 20 __u64 addr; /* SCOM address, supports indirect */ 21 __u64 data; /* SCOM data (in for write, out for read) */ 22 __u64 mask; /* Data mask for writes */ 23 __u32 intf_errors; /* Interface error flags */ 24#define SCOM_INTF_ERR_PARITY 0x00000001 /* Parity error */ 25#define SCOM_INTF_ERR_PROTECTION 0x00000002 /* Blocked by secure boot */ 26#define SCOM_INTF_ERR_ABORT 0x00000004 /* PIB reset during access */ 27#define SCOM_INTF_ERR_UNKNOWN 0x80000000 /* Unknown error */ 28 /* 29 * Note: Any other bit set in intf_errors need to be considered as an 30 * error. Future implementations may define new error conditions. The 31 * pib_status below is only valid if intf_errors is 0. 32 */ 33 __u8 pib_status; /* 3-bit PIB status */ 34#define SCOM_PIB_SUCCESS 0 /* Access successful */ 35#define SCOM_PIB_BLOCKED 1 /* PIB blocked, pls retry */ 36#define SCOM_PIB_OFFLINE 2 /* Chiplet offline */ 37#define SCOM_PIB_PARTIAL 3 /* Partial good */ 38#define SCOM_PIB_BAD_ADDR 4 /* Invalid address */ 39#define SCOM_PIB_CLK_ERR 5 /* Clock error */ 40#define SCOM_PIB_PARITY_ERR 6 /* Parity error on the PIB bus */ 41#define SCOM_PIB_TIMEOUT 7 /* Bus timeout */ 42 __u8 pad; 43}; 44 45/* Flags for SCOM check */ 46#define SCOM_CHECK_SUPPORTED 0x00000001 /* Interface supported */ 47#define SCOM_CHECK_PROTECTED 0x00000002 /* Interface blocked by secure boot */ 48 49/* Flags for SCOM reset */ 50#define SCOM_RESET_INTF 0x00000001 /* Reset interface */ 51#define SCOM_RESET_PIB 0x00000002 /* Reset PIB */ 52 53#define FSI_SCOM_CHECK _IOR('s', 0x00, __u32) 54#define FSI_SCOM_READ _IOWR('s', 0x01, struct scom_access) 55#define FSI_SCOM_WRITE _IOWR('s', 0x02, struct scom_access) 56#define FSI_SCOM_RESET _IOW('s', 0x03, __u32) 57 58/* 59 * /dev/sbefifo* ioctl interface 60 */ 61 62/** 63 * FSI_SBEFIFO_READ_TIMEOUT sets the read timeout for response from SBE. 64 * 65 * The read timeout is specified in seconds. The minimum value of read 66 * timeout is 10 seconds (default) and the maximum value of read timeout is 67 * 120 seconds. A read timeout of 0 will reset the value to the default of 68 * (10 seconds). 69 */ 70#define FSI_SBEFIFO_READ_TIMEOUT_SECONDS _IOW('s', 0x00, __u32) 71 72#endif /* _UAPI_LINUX_FSI_H */