| /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ |
| #ifndef _UAPI_LINUX_FSI_H |
| #define _UAPI_LINUX_FSI_H |
| |
| #include <linux/types.h> |
| #include <linux/ioctl.h> |
| |
| /* |
| * /dev/scom "raw" ioctl interface |
| * |
| * The driver supports a high level "read/write" interface which |
| * handles retries and converts the status to Linux error codes, |
| * however low level tools an debugger need to access the "raw" |
| * HW status information and interpret it themselves, so this |
| * ioctl interface is also provided for their use case. |
| */ |
| |
| /* Structure for SCOM read/write */ |
| struct scom_access { |
| __u64 addr; /* SCOM address, supports indirect */ |
| __u64 data; /* SCOM data (in for write, out for read) */ |
| __u64 mask; /* Data mask for writes */ |
| __u32 intf_errors; /* Interface error flags */ |
| #define SCOM_INTF_ERR_PARITY 0x00000001 /* Parity error */ |
| #define SCOM_INTF_ERR_PROTECTION 0x00000002 /* Blocked by secure boot */ |
| #define SCOM_INTF_ERR_ABORT 0x00000004 /* PIB reset during access */ |
| #define SCOM_INTF_ERR_UNKNOWN 0x80000000 /* Unknown error */ |
| /* |
| * Note: Any other bit set in intf_errors need to be considered as an |
| * error. Future implementations may define new error conditions. The |
| * pib_status below is only valid if intf_errors is 0. |
| */ |
| __u8 pib_status; /* 3-bit PIB status */ |
| #define SCOM_PIB_SUCCESS 0 /* Access successful */ |
| #define SCOM_PIB_BLOCKED 1 /* PIB blocked, pls retry */ |
| #define SCOM_PIB_OFFLINE 2 /* Chiplet offline */ |
| #define SCOM_PIB_PARTIAL 3 /* Partial good */ |
| #define SCOM_PIB_BAD_ADDR 4 /* Invalid address */ |
| #define SCOM_PIB_CLK_ERR 5 /* Clock error */ |
| #define SCOM_PIB_PARITY_ERR 6 /* Parity error on the PIB bus */ |
| #define SCOM_PIB_TIMEOUT 7 /* Bus timeout */ |
| __u8 pad; |
| }; |
| |
| /* Flags for SCOM check */ |
| #define SCOM_CHECK_SUPPORTED 0x00000001 /* Interface supported */ |
| #define SCOM_CHECK_PROTECTED 0x00000002 /* Interface blocked by secure boot */ |
| |
| /* Flags for SCOM reset */ |
| #define SCOM_RESET_INTF 0x00000001 /* Reset interface */ |
| #define SCOM_RESET_PIB 0x00000002 /* Reset PIB */ |
| |
| #define FSI_SCOM_CHECK _IOR('s', 0x00, __u32) |
| #define FSI_SCOM_READ _IOWR('s', 0x01, struct scom_access) |
| #define FSI_SCOM_WRITE _IOWR('s', 0x02, struct scom_access) |
| #define FSI_SCOM_RESET _IOW('s', 0x03, __u32) |
| |
| /* |
| * /dev/sbefifo* ioctl interface |
| */ |
| |
| /** |
| * FSI_SBEFIFO_READ_TIMEOUT sets the read timeout for response from SBE. |
| * |
| * The read timeout is specified in seconds. The minimum value of read |
| * timeout is 10 seconds (default) and the maximum value of read timeout is |
| * 120 seconds. A read timeout of 0 will reset the value to the default of |
| * (10 seconds). |
| */ |
| #define FSI_SBEFIFO_READ_TIMEOUT_SECONDS _IOW('s', 0x00, __u32) |
| |
| #endif /* _UAPI_LINUX_FSI_H */ |