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1/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */2#ifndef _UAPI_LINUX_FSI_H3#define _UAPI_LINUX_FSI_H4 5#include <linux/types.h>6#include <linux/ioctl.h>7 8/*9 * /dev/scom "raw" ioctl interface10 *11 * The driver supports a high level "read/write" interface which12 * 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 this15 * 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 an30 * error. Future implementations may define new error conditions. The31 * 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 interface60 */61 62/**63 * FSI_SBEFIFO_CMD_TIMEOUT sets the timeout for writing data to the SBEFIFO.64 *65 * The command timeout is specified in seconds. The minimum value of command66 * timeout is 1 seconds (default) and the maximum value of command timeout is67 * 120 seconds. A command timeout of 0 will reset the value to the default of68 * 1 seconds.69 */70#define FSI_SBEFIFO_CMD_TIMEOUT_SECONDS _IOW('s', 0x01, __u32)71 72/**73 * FSI_SBEFIFO_READ_TIMEOUT sets the read timeout for response from SBE.74 *75 * The read timeout is specified in seconds. The minimum value of read76 * timeout is 10 seconds (default) and the maximum value of read timeout is77 * 120 seconds. A read timeout of 0 will reset the value to the default of78 * (10 seconds).79 */80#define FSI_SBEFIFO_READ_TIMEOUT_SECONDS _IOW('s', 0x00, __u32)81 82#endif /* _UAPI_LINUX_FSI_H */83