// license:BSD-3-Clause
// copyright-holders:Aaron Giles
/*************************************************************************
SMC91C9X ethernet controller implementation
by Aaron Giles
**************************************************************************/
#ifndef __SMC91C9X__
#define __SMC91C9X__
#define ETHER_BUFFER_SIZE (2048)
#define ETHER_RX_BUFFERS (4)
/***************************************************************************
TYPE DEFINITIONS
***************************************************************************/
class smc91c9x_device : public device_t
{
public:
smc91c9x_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, uint32_t clock, const char *shortname, const char *source);
~smc91c9x_device() {}
template<class _Object> static devcb_base &set_irq_callback(device_t &device, _Object object) { return downcast<smc91c9x_device &>(device).m_irq_handler.set_callback(object); }
DECLARE_READ16_MEMBER( read );
DECLARE_WRITE16_MEMBER( write );
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
private:
// internal state
devcb_write_line m_irq_handler;
/* raw register data and masks */
uint16_t m_reg[64];
uint16_t m_regmask[64];
/* IRQ information */
uint8_t m_irq_state;
/* allocate information */
uint8_t m_alloc_count;
/* transmit/receive FIFOs */
uint8_t m_fifo_count;
uint8_t m_rx[ETHER_BUFFER_SIZE * ETHER_RX_BUFFERS];
uint8_t m_tx[ETHER_BUFFER_SIZE];
/* counters */
uint32_t m_sent;
uint32_t m_recd;
void update_ethernet_irq();
void update_stats();
void finish_enqueue(int param);
void process_command(uint16_t data);
};
class smc91c94_device : public smc91c9x_device
{
public:
smc91c94_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
};
extern const device_type SMC91C94;
class smc91c96_device : public smc91c9x_device
{
public:
smc91c96_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
};
extern const device_type SMC91C96;
/***************************************************************************
DEVICE CONFIGURATION MACROS
***************************************************************************/
#define MCFG_SMC91C94_ADD(_tag) \
MCFG_DEVICE_ADD(_tag, SMC91C94, 0)
#define MCFG_SMC91C94_IRQ_CALLBACK(_write) \
devcb = &smc91c94_device::set_irq_callback(*device, DEVCB_##_write);
#define MCFG_SMC91C96_ADD(_tag) \
MCFG_DEVICE_ADD(_tag, SMC91C96, 0)
#define MCFG_SMC91C96_IRQ_CALLBACK(_write) \
devcb = &smc91c96_device::set_irq_callback(*device, DEVCB_##_write);
#endif