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/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/*
* Copyright 2022 Oxide Computer Company
*/
#ifndef _AMDZEN_CLIENT_H
#define _AMDZEN_CLIENT_H
/*
* This header provides client routines to clients of the amdzen nexus driver.
*/
#include <sys/types.h>
#include <sys/amdzen/df.h>
#include <sys/amdzen/smn.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* This struct encodes enough information to later be used to compose and
* decompose a fabric ID and component ID. A fabric ID is broken into its node
* and component IDs and then a node ID is further decomposed into a socket and
* die ID.
*/
typedef struct {
uint32_t dfd_sock_mask;
uint32_t dfd_die_mask;
uint32_t dfd_node_mask;
uint32_t dfd_comp_mask;
uint8_t dfd_sock_shift;
uint8_t dfd_die_shift;
uint8_t dfd_node_shift;
uint8_t dfd_comp_shift;
} df_fabric_decomp_t;
extern uint_t amdzen_c_df_count(void);
extern df_rev_t amdzen_c_df_rev(void);
extern int amdzen_c_df_fabric_decomp(df_fabric_decomp_t *);
/*
* SMN and DF access routines.
*/
extern int amdzen_c_smn_read(uint_t, const smn_reg_t, uint32_t *);
extern int amdzen_c_smn_write(uint_t, const smn_reg_t, const uint32_t);
extern int amdzen_c_df_read32(uint_t, uint8_t, const df_reg_def_t, uint32_t *);
extern int amdzen_c_df_read64(uint_t, uint8_t, const df_reg_def_t, uint64_t *);
/*
* The following are logical types that we can iterate over. Note, that these
* are a combination of a DF type and subtype. This is used to smooth over the
* differences between different DF revisions and how they indicate these types.
*/
typedef enum {
/*
* Iterate over only DDR memory controllers.
*/
ZEN_DF_TYPE_CS_UMC,
/*
* Iterate only over CPU based CCMs.
*/
ZEN_DF_TYPE_CCM_CPU
} zen_df_type_t;
typedef int (*amdzen_c_iter_f)(uint_t, uint32_t, uint32_t, void *);
extern int amdzen_c_df_iter(uint_t, zen_df_type_t, amdzen_c_iter_f, void *);
#ifdef __cplusplus
}
#endif
#endif /* _AMDZEN_CLIENT_H */
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