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39 #include <rte_memory.h>
41 /* The MPU or Memory Prefetch Unit is an internal Arkville hardware
42 * module for moving data between host memory and the hardware FPGA.
43 * This module is *not* intended for end-user manipulation, hence
44 * there is minimal documentation.
48 * MPU hardware structures
49 * These are overlay structures to a memory mapped FPGA device. These
50 * structs will never be instantiated in ram memory
53 #define ARK_MPU_ID 0x00
67 #define ARK_MPU_HW 0x010
76 #define ARK_MPU_CFG 0x040
77 struct ark_mpu_cfg_t
{
78 phys_addr_t ring_base
; /* phys_addr_t is a uint64_t */
81 uint32_t min_host_move
;
83 volatile uint32_t sw_prod_index
;
84 volatile uint32_t hw_cons_index
;
85 volatile uint32_t command
;
87 enum ARK_MPU_COMMAND
{
92 MPU_CMD_FORCE_RESET
= 16,
93 MPU_COMMAND_LIMIT
= 0xfFFFFFFF
96 #define ARK_MPU_STATS 0x080
97 struct ark_mpu_stats_t
{
98 volatile uint64_t pci_request
;
99 volatile uint64_t q_empty
;
100 volatile uint64_t q_q1
;
101 volatile uint64_t q_q2
;
102 volatile uint64_t q_q3
;
103 volatile uint64_t q_q4
;
104 volatile uint64_t q_full
;
107 #define ARK_MPU_DEBUG 0x0C0
108 struct ark_mpu_debug_t
{
109 volatile uint32_t state
;
111 volatile uint32_t count
;
112 volatile uint32_t take
;
113 volatile uint32_t peek
[4];
116 /* Consolidated structure */
118 struct ark_mpu_id_t id
;
119 uint8_t reserved0
[(ARK_MPU_HW
- ARK_MPU_ID
)
120 - sizeof(struct ark_mpu_id_t
)];
121 struct ark_mpu_hw_t hw
;
122 uint8_t reserved1
[(ARK_MPU_CFG
- ARK_MPU_HW
) -
123 sizeof(struct ark_mpu_hw_t
)];
124 struct ark_mpu_cfg_t cfg
;
125 uint8_t reserved2
[(ARK_MPU_STATS
- ARK_MPU_CFG
) -
126 sizeof(struct ark_mpu_cfg_t
)];
127 struct ark_mpu_stats_t stats
;
128 uint8_t reserved3
[(ARK_MPU_DEBUG
- ARK_MPU_STATS
) -
129 sizeof(struct ark_mpu_stats_t
)];
130 struct ark_mpu_debug_t debug
;
133 uint16_t ark_api_num_queues(struct ark_mpu_t
*mpu
);
134 uint16_t ark_api_num_queues_per_port(struct ark_mpu_t
*mpu
,
136 int ark_mpu_verify(struct ark_mpu_t
*mpu
, uint32_t obj_size
);
137 void ark_mpu_stop(struct ark_mpu_t
*mpu
);
138 void ark_mpu_start(struct ark_mpu_t
*mpu
);
139 int ark_mpu_reset(struct ark_mpu_t
*mpu
);
140 int ark_mpu_configure(struct ark_mpu_t
*mpu
, phys_addr_t ring
,
141 uint32_t ring_size
, int is_tx
);
143 void ark_mpu_dump(struct ark_mpu_t
*mpu
, const char *msg
, uint16_t idx
);
144 void ark_mpu_dump_setup(struct ark_mpu_t
*mpu
, uint16_t qid
);
145 void ark_mpu_reset_stats(struct ark_mpu_t
*mpu
);
147 /* this action is in a performance critical path */
149 ark_mpu_set_producer(struct ark_mpu_t
*mpu
, uint32_t idx
)
151 mpu
->cfg
.sw_prod_index
= idx
;