/* 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;
};
/** * FSI_SBEFIFO_CMD_TIMEOUT sets the timeout for writing data to the SBEFIFO. * * The command timeout is specified in seconds. The minimum value of command * timeout is 1 seconds (default) and the maximum value of command timeout is * 120 seconds. A command timeout of 0 will reset the value to the default of * 1 seconds.
*/ #define FSI_SBEFIFO_CMD_TIMEOUT_SECONDS _IOW('s', 0x01, __u32)
/** * 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 */
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