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smc91c9x: Switch from queue to vector for save state support. (nw)

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This commit is contained in:
Ted Green 2017-12-12 16:18:57 -07:00
parent 9f9310b44d
commit d7ab1ee20a
2 changed files with 15 additions and 15 deletions
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26
src/devices/machine/smc91c9x.cpp
View File

@ -126,6 +126,10 @@ void smc91c9x_device::device_start()
m_irq_handler.resolve_safe();
// Set completion queues to max size to save properly
m_comp_rx.resize(ETHER_BUFFERS);
m_comp_tx.resize(ETHER_BUFFERS);
/* register ide states */
save_item(NAME(m_reg));
save_item(NAME(m_regmask));
@ -135,9 +139,8 @@ void smc91c9x_device::device_start()
save_item(NAME(m_recd));
save_item(NAME(m_alloc_rx));
save_item(NAME(m_alloc_tx));
// TODO: Need to save these
//save_item(NAME(m_comp_rx));
//save_item(NAME(m_comp_tx));
save_item(NAME(m_comp_rx));
save_item(NAME(m_comp_tx));
}
//-------------------------------------------------
@ -222,11 +225,10 @@ void smc91c9x_device::mmu_reset()
// Reset MMU allocations
m_alloc_rx = 0;
m_alloc_tx = 0;
// Reset completion FIFOs
while (!m_comp_tx.empty())
m_comp_tx.pop();
while (!m_comp_rx.empty())
m_comp_rx.pop();
m_comp_tx.clear();
m_comp_rx.clear();
// Flush fifos.
clear_tx_fifo();
@ -426,7 +428,7 @@ void smc91c9x_device::recv_cb(uint8_t *data, int length)
packet[3] = (dst) >> 8;
// Push packet number to rx completion fifo
m_comp_rx.push(packet_num);
m_comp_rx.push_back(packet_num);
}
else
{
@ -627,7 +629,7 @@ void smc91c9x_device::process_command(uint16_t data)
case ECMD_REMOVE_TOPFRAME_TX:
LOG(" REMOVE FRAME FROM TX FIFO\n");
m_comp_tx.pop();
m_comp_tx.erase(m_comp_tx.begin());
// TODO: Should we clear TX_INT?
break;
@ -639,7 +641,7 @@ void smc91c9x_device::process_command(uint16_t data)
case ECMD_REMOVE_TOPFRAME_RX:
LOG(" REMOVE FRAME FROM RX FIFO\n");
// remove entry from rx queue
m_comp_rx.pop();
m_comp_rx.erase(m_comp_rx.begin());
update_ethernet_irq();
m_recd++;
@ -661,7 +663,7 @@ void smc91c9x_device::process_command(uint16_t data)
{
const int packet_number = m_reg[EREG_PNR_ARR] & 0xff;
// Push packet number tx completion fifo
m_comp_tx.push(packet_number);
m_comp_tx.push_back(packet_number);
m_tx_timer->adjust(attotime::from_usec(10));
}
break;
@ -873,7 +875,7 @@ WRITE16_MEMBER( smc91c9x_device::write )
case EREG_INTERRUPT:
// Pop tx fifo packet from completion fifo if clear tx int is set
if (m_reg[EREG_INTERRUPT] & data & EINT_TX) {
m_comp_tx.pop();
m_comp_tx.erase(m_comp_tx.begin());
m_reg[EREG_INTERRUPT] &= ~EINT_TX;
}
m_reg[EREG_INTERRUPT] &= ~(data & 0x56);

4
src/devices/machine/smc91c9x.h
View File

@ -11,8 +11,6 @@
#ifndef MAME_MACHINE_SMC91C9X_H
#define MAME_MACHINE_SMC91C9X_H
#include <queue>
/***************************************************************************
TYPE DEFINITIONS
***************************************************************************/
@ -45,7 +43,7 @@ private:
// mmu
// The bits in these vectors indicate a packet has been allocated
u32 m_alloc_rx, m_alloc_tx;
std::queue<int> m_comp_tx, m_comp_rx;
std::vector<int> m_comp_tx, m_comp_rx;
// Requests a packet allocation and returns true
// and sets the packet number if successful
bool alloc_req(const int tx, int &packet_num);