Traits class for Scratchpad and ScratchpadClass. More...

#include <Scratchpad.h>

Classes
struct	scratchpad_req_t

Public Types
typedef WORD_TYPE	word_type

typedef ScratchpadClass< word_type, num_banks, capacity_in_words >	mem_class_t

typedef Scratchpad< word_type, num_banks, capacity_in_words >	mem_module_t

typedef mem_class_t::req_t	base_req_t

typedef mem_class_t::rsp_t	base_rsp_t

typedef mem_class_t::bank_sel_t	bank_sel_t

typedef ac_int< addr_width, false >	addr_t

Static Public Attributes
static const int	num_banks = NUM_BANKS

static const int	capacity_in_words = CAPACITY_IN_WORDS

static const int	num_inputs = num_banks

static const int	words_per_bank = capacity_in_words / num_banks

static const int	addr_width = mem_class_t::ADDR_WIDTH

static const int	bank_sel_width = mem_class_t::NBANKS_LOG2

Detailed Description

template<typename WORD_TYPE, int NUM_BANKS, int CAPACITY_IN_WORDS>
struct ScratchpadTraits< WORD_TYPE, NUM_BANKS, CAPACITY_IN_WORDS >

Traits class for Scratchpad and ScratchpadClass.

Template Parameters

T	EntryType
N	Number of requests
CAPACITY_IN_WORDS	Total number of words of type T in memory

Overview: This traits class provides a clean way to access all types and constants that might be needed when using Scratchpad or ScratchpadClass.

Available Type and Constants: typedef WORD_TYPE word_type;

static const int num_banks = NUM_BANKS;

static const int capacity_in_words = CAPACITY_IN_WORDS;

static const int num_inputs = num_banks; // Note: for Scratchpad num_banks must equal num_inputs

static const int words_per_bank = capacity_in_words / num_banks;

typedef ScratchpadClass<word_type, num_banks, capacity_in_words> mem_class_t;

typedef Scratchpad<word_type, num_banks, capacity_in_words> mem_module_t;

typedef typename mem_class_t::req_t base_req_t;

typedef typename mem_class_t::rsp_t base_rsp_t;

static const int addr_width = mem_class_t::ADDR_WIDTH;

static const int bank_sel_width = mem_class_t::NBANKS_LOG2;

typedef typename mem_class_t::bank_sel_t bank_sel_t;

typedef ac_int<addr_width, false> addr_t;

struct scratchpad_req_t : public base_req_t {

scratchpad_req_t() {

for (unsigned i=0; i < num_inputs; i++)

this->valids[i] = 0;

}

}

void set(unsigned idx, addr_t _addr, word_type _data=0) {

sc_assert(idx < num_inputs);

this->valids[idx] = 1;

this->addr[idx] = _addr;

this->data[idx] = _data;

}

ScratchpadClass
Parameterized banked scratchpad memory implemented as a C++ class (i.e. not a SystemC module)
Definition Scratchpad.h:101

Scratchpad
Parameterized banked scratchpad memory implemented as a SystemC module.
Definition Scratchpad.h:259

cli_req_t
Definition ArbitratedScratchpadTypes.h:38

cli_rsp_t
Definition ArbitratedScratchpadTypes.h:63

ScratchpadTraits::scratchpad_req_t
Definition Scratchpad.h:417

A Simple Example: #include <Scratchpad.h>

...

// local Scratchpad "traits" class provides all related types and constants

// Here the

// EntryType is uint32

// number of banks is 16

// total capacity in words is 16 * 0x1000

typedef ScratchpadTraits<uint32, 16, 16 * 0x1000> local_mem;

...

local_mem::mem_class_t scratchpad1; // instantiate a ScratchpadClass

...

local_mem::scratchpad_req_t sp_req; // local scratchpad request type

local_mem::word_type sum=0; // EntryType stored in memory

ScratchpadTraits
Traits class for Scratchpad and ScratchpadClass.
Definition Scratchpad.h:396

Definition at line 396 of file Scratchpad.h.