| "use strict"; |
| |
| |
| /** @const */ var E8390_CMD = 0x00 /* The command register (for all pages) */ |
| |
| /* Page 0 register offsets. */ |
| /** @const */ var EN0_CLDALO = 0x01 /* Low byte of current local dma addr RD */ |
| /** @const */ var EN0_STARTPG = 0x01 /* Starting page of ring bfr WR */ |
| /** @const */ var EN0_CLDAHI = 0x02 /* High byte of current local dma addr RD */ |
| /** @const */ var EN0_STOPPG = 0x02 /* Ending page +1 of ring bfr WR */ |
| /** @const */ var EN0_BOUNDARY = 0x03 /* Boundary page of ring bfr RD WR */ |
| /** @const */ var EN0_TSR = 0x04 /* Transmit status reg RD */ |
| /** @const */ var EN0_TPSR = 0x04 /* Transmit starting page WR */ |
| /** @const */ var EN0_NCR = 0x05 /* Number of collision reg RD */ |
| /** @const */ var EN0_TCNTLO = 0x05 /* Low byte of tx byte count WR */ |
| /** @const */ var EN0_FIFO = 0x06 /* FIFO RD */ |
| /** @const */ var EN0_TCNTHI = 0x06 /* High byte of tx byte count WR */ |
| /** @const */ var EN0_ISR = 0x07 /* Interrupt status reg RD WR */ |
| /** @const */ var EN0_CRDALO = 0x08 /* low byte of current remote dma address RD */ |
| /** @const */ var EN0_RSARLO = 0x08 /* Remote start address reg 0 */ |
| /** @const */ var EN0_CRDAHI = 0x09 /* high byte, current remote dma address RD */ |
| /** @const */ var EN0_RSARHI = 0x09 /* Remote start address reg 1 */ |
| /** @const */ var EN0_RCNTLO = 0x0a /* Remote byte count reg WR */ |
| /** @const */ var EN0_RCNTHI = 0x0b /* Remote byte count reg WR */ |
| /** @const */ var EN0_RSR = 0x0c /* rx status reg RD */ |
| /** @const */ var EN0_RXCR = 0x0c /* RX configuration reg WR */ |
| /** @const */ var EN0_TXCR = 0x0d /* TX configuration reg WR */ |
| /** @const */ var EN0_COUNTER0 = 0x0d /* Rcv alignment error counter RD */ |
| /** @const */ var EN0_DCFG = 0x0e /* Data configuration reg WR */ |
| /** @const */ var EN0_COUNTER1 = 0x0e /* Rcv CRC error counter RD */ |
| /** @const */ var EN0_IMR = 0x0f /* Interrupt mask reg WR */ |
| /** @const */ var EN0_COUNTER2 = 0x0f /* Rcv missed frame error counter RD */ |
| |
| /** @const */ var NE_DATAPORT = 0x10 /* NatSemi-defined port window offset. */ |
| /** @const */ var NE_RESET = 0x1f /* Issue a read to reset, a write to clear. */ |
| |
| /* Bits in EN0_ISR - Interrupt status register */ |
| /** @const */ var ENISR_RX = 0x01 /* Receiver, no error */ |
| /** @const */ var ENISR_TX = 0x02 /* Transmitter, no error */ |
| /** @const */ var ENISR_RX_ERR = 0x04 /* Receiver, with error */ |
| /** @const */ var ENISR_TX_ERR = 0x08 /* Transmitter, with error */ |
| /** @const */ var ENISR_OVER = 0x10 /* Receiver overwrote the ring */ |
| /** @const */ var ENISR_COUNTERS = 0x20 /* Counters need emptying */ |
| /** @const */ var ENISR_RDC = 0x40 /* remote dma complete */ |
| /** @const */ var ENISR_RESET = 0x80 /* Reset completed */ |
| /** @const */ var ENISR_ALL = 0x3f /* Interrupts we will enable */ |
| |
| /** @const */ var ENRSR_RXOK = 0x01 /* Received a good packet */ |
| |
| /** @const */ var START_PAGE = 0x40; |
| /** @const */ var START_RX_PAGE = 0x40 + 12; |
| /** @const */ var STOP_PAGE = 0x80; |
| |
| |
| /** |
| * @constructor |
| * @param {CPU} cpu |
| * @param {Bus.Connector} bus |
| */ |
| function Ne2k(cpu, bus) |
| { |
| /** @const @type {CPU} */ |
| this.cpu = cpu; |
| |
| /** @const @type {Bus.Connector} */ |
| this.bus = bus; |
| this.bus.register("net0-receive", function(data) |
| { |
| this.receive(data); |
| }, this); |
| |
| this.pci_space = [ |
| 0xec, 0x10, 0x29, 0x80, 0x03, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, |
| 0x01, 0xb8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf4, 0x1a, 0x00, 0x11, |
| 0x00, 0x00, 0xb8, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0b, 0x01, 0x00, 0x00, |
| ]; |
| this.pci_id = 0x05 << 3; |
| this.pci_bars = [ |
| { |
| size: 32, |
| }, |
| ]; |
| |
| cpu.devices.pci.register_device(this); |
| |
| this.isr = 0; |
| this.imr = 0; // interrupt mask register |
| |
| this.cr = 1; |
| |
| this.dcfg = 0; |
| |
| this.port = 0xB800; |
| this.irq = 0x0B; |
| |
| this.rcnt = 0; |
| |
| this.tcnt = 0; |
| this.tpsr = 0; |
| this.memory = new Uint8Array(256 * 0x80); |
| |
| // mac address |
| var mac = [ |
| 0x00, 0x22, 0x15, |
| Math.random() * 255 | 0, |
| Math.random() * 255 | 0, |
| Math.random() * 255 | 0, |
| ]; |
| |
| for(var i = 0; i < 6; i++) |
| { |
| this.memory[i << 1] = this.memory[i << 1 | 1] = mac[i]; |
| } |
| |
| dbg_log("Mac: " + h(mac[0], 2) + ":" + |
| h(mac[1], 2) + ":" + |
| h(mac[2], 2) + ":" + |
| h(mac[3], 2) + ":" + |
| h(mac[4], 2) + ":" + |
| h(mac[5], 2), LOG_NET); |
| |
| this.rsar = 0; |
| |
| this.pstart = START_PAGE; |
| this.pstop = STOP_PAGE; |
| |
| this.curpg = START_RX_PAGE; |
| this.boundary = START_RX_PAGE; |
| |
| var io = cpu.io; |
| |
| io.register_read(this.port | E8390_CMD, this, function() |
| { |
| dbg_log("Read cmd", LOG_NET); |
| return this.cr; |
| }); |
| |
| io.register_write(this.port | E8390_CMD, this, function(data_byte) |
| { |
| this.cr = data_byte & ~4; |
| dbg_log("Write command: " + h(data_byte, 2) + " newpg=" + (this.cr >> 6), LOG_NET); |
| |
| if(this.cr & 1) |
| { |
| return; |
| } |
| |
| if(data_byte & 4) |
| { |
| var start = this.tpsr << 8; |
| var data = this.memory.subarray(start, start + this.tcnt); |
| this.bus.send("net0-send", data); |
| this.bus.send("eth-transmit-end", [data.length]); |
| this.do_interrupt(ENISR_TX); |
| |
| if(this.rcnt === 0) |
| { |
| this.do_interrupt(ENISR_RDC); |
| } |
| |
| dbg_log("Command: Transfer. length=" + h(data.byteLength), LOG_NET); |
| } |
| }); |
| |
| io.register_read(this.port | EN0_COUNTER0, this, function() |
| { |
| dbg_log("Read counter0", LOG_NET); |
| return 0; |
| }); |
| |
| io.register_read(this.port | EN0_COUNTER1, this, function() |
| { |
| dbg_log("Read counter1", LOG_NET); |
| return 0; |
| }); |
| |
| io.register_read(this.port | EN0_COUNTER2, this, function() |
| { |
| dbg_log("Read counter2", LOG_NET); |
| return 0; |
| }); |
| |
| io.register_read(this.port | NE_RESET, this, function() |
| { |
| var pg = this.get_page(); |
| if(pg === 0) |
| { |
| dbg_log("Read reset", LOG_NET); |
| this.do_interrupt(ENISR_RESET); |
| } |
| else |
| { |
| dbg_log("Read pg1/1f", LOG_NET); |
| } |
| return 0; |
| }); |
| |
| io.register_write(this.port | NE_RESET, this, function(data_byte) |
| { |
| var pg = this.get_page(); |
| if(pg === 0) |
| { |
| dbg_log("Write reset: " + h(data_byte, 2), LOG_NET); |
| //this.isr &= ~ENISR_RESET; |
| } |
| else |
| { |
| dbg_log("Write pg1/1f: " + h(data_byte), LOG_NET); |
| } |
| }); |
| |
| io.register_write(this.port | EN0_STARTPG, this, function(data_byte) |
| { |
| var pg = this.get_page(); |
| if(pg === 0) |
| { |
| dbg_log("start page: " + h(data_byte, 2), LOG_NET); |
| this.pstart = data_byte; |
| } |
| else |
| { |
| dbg_log("pg1/1: " + h(data_byte, 2), LOG_NET); |
| } |
| }); |
| |
| io.register_write(this.port | EN0_STOPPG, this, function(data_byte) |
| { |
| var pg = this.get_page(); |
| if(pg === 0) |
| { |
| dbg_log("stop page: " + h(data_byte, 2), LOG_NET); |
| this.pstop = data_byte; |
| } |
| else |
| { |
| dbg_log("pg1/2: " + h(data_byte, 2), LOG_NET); |
| } |
| }); |
| |
| io.register_read(this.port | EN0_ISR, this, function() |
| { |
| var pg = this.get_page(); |
| if(pg === 0) |
| { |
| dbg_log("Read isr: " + h(this.isr, 2), LOG_NET); |
| return this.isr; |
| } |
| else |
| { |
| dbg_log("Read curpg: " + h(this.curpg, 2), LOG_NET); |
| return this.curpg; |
| } |
| }); |
| |
| io.register_write(this.port | EN0_ISR, this, function(data_byte) |
| { |
| var pg = this.get_page(); |
| if(pg === 0) |
| { |
| // acknoledge interrupts where bit is set |
| dbg_log("Write isr: " + h(data_byte, 2), LOG_NET); |
| this.isr &= ~data_byte |
| } |
| else |
| { |
| dbg_log("Write curpg: " + h(data_byte, 2), LOG_NET); |
| this.curpg = data_byte |
| } |
| }); |
| |
| io.register_write(this.port | EN0_TXCR, this, function(data_byte) |
| { |
| var pg = this.get_page(); |
| if(pg === 0) |
| { |
| dbg_log("Write tx config: " + h(data_byte, 2), LOG_NET); |
| } |
| else |
| { |
| dbg_log("Write pg1/0x0d " + h(data_byte, 2), LOG_NET); |
| } |
| }); |
| |
| io.register_write(this.port | EN0_DCFG, this, function(data_byte) |
| { |
| var pg = this.get_page(); |
| if(pg === 0) |
| { |
| dbg_log("Write data configuration: " + h(data_byte, 2), LOG_NET); |
| this.dcfg = data_byte; |
| } |
| else |
| { |
| dbg_log("Write pg1/0x0e " + h(data_byte, 2), LOG_NET); |
| } |
| }); |
| |
| io.register_write(this.port | EN0_RCNTLO, this, function(data_byte) |
| { |
| var pg = this.get_page(); |
| if(pg === 0) |
| { |
| dbg_log("Write remote byte count low: " + h(data_byte, 2), LOG_NET); |
| this.rcnt = this.rcnt & 0xFF00 | data_byte & 0xFF; |
| } |
| else |
| { |
| dbg_log("Write pg1/0x0a " + h(data_byte, 2), LOG_NET); |
| } |
| }); |
| |
| io.register_write(this.port | EN0_RCNTHI, this, function(data_byte) |
| { |
| var pg = this.get_page(); |
| if(pg === 0) |
| { |
| dbg_log("Write remote byte count high: " + h(data_byte, 2), LOG_NET); |
| this.rcnt = this.rcnt & 0xFF | data_byte << 8 & 0xFF00; |
| } |
| else |
| { |
| dbg_log("Write pg1/0x0b " + h(data_byte, 2), LOG_NET); |
| } |
| }); |
| |
| io.register_write(this.port | EN0_RSARLO, this, function(data_byte) |
| { |
| var pg = this.get_page(); |
| if(pg === 0) |
| { |
| dbg_log("Write remote start address low: " + h(data_byte, 2), LOG_NET); |
| this.rsar = this.rsar & 0xFF00 | data_byte & 0xFF; |
| } |
| else |
| { |
| dbg_log("Write pg1/0x08 " + h(data_byte, 2), LOG_NET); |
| } |
| }); |
| |
| io.register_write(this.port | EN0_RSARHI, this, function(data_byte) |
| { |
| var pg = this.get_page(); |
| if(pg === 0) |
| { |
| dbg_log("Write start addresse count high: " + h(data_byte, 2), LOG_NET); |
| this.rsar = this.rsar & 0xFF | data_byte << 8 & 0xFF00; |
| } |
| else |
| { |
| dbg_log("Write pg1/0x09 " + h(data_byte, 2), LOG_NET); |
| } |
| }); |
| |
| io.register_write(this.port | EN0_IMR, this, function(data_byte) |
| { |
| var pg = this.get_page(); |
| if(pg === 0) |
| { |
| this.imr = data_byte; |
| dbg_log("Write interrupt mask register: " + h(data_byte, 2), LOG_NET); |
| } |
| else |
| { |
| dbg_log("Write pg1/0x0f " + h(data_byte, 2), LOG_NET); |
| } |
| }); |
| |
| io.register_read(this.port | EN0_BOUNDARY, this, function() |
| { |
| var pg = this.get_page(); |
| if(pg === 0) |
| { |
| dbg_log("Read boundary: " + h(this.boundary, 2), LOG_NET); |
| return this.boundary; |
| } |
| else |
| { |
| dbg_log("Read pg1/0x03", LOG_NET); |
| return 0; |
| } |
| }); |
| |
| io.register_write(this.port | EN0_BOUNDARY, this, function(data_byte) |
| { |
| var pg = this.get_page(); |
| if(pg === 0) |
| { |
| dbg_log("Write boundary: " + h(data_byte, 2), LOG_NET); |
| this.boundary = data_byte; |
| } |
| else |
| { |
| dbg_log("Write pg1/0x03 " + h(data_byte, 2), LOG_NET); |
| } |
| }); |
| |
| io.register_read(this.port | EN0_TSR, this, function() |
| { |
| var pg = this.get_page(); |
| if(pg === 0) |
| { |
| return 1 | 2 | 1 << 5; // transmit status ok |
| } |
| else |
| { |
| dbg_log("Read pg1/0x04", LOG_NET); |
| return 0; |
| } |
| }); |
| |
| io.register_write(this.port | EN0_TPSR, this, function(data_byte) |
| { |
| var pg = this.get_page(); |
| if(pg === 0) |
| { |
| dbg_log("Write tpsr: " + h(data_byte, 2), LOG_NET); |
| this.tpsr = data_byte; |
| } |
| else |
| { |
| dbg_log("Write pg1/0x04 " + h(data_byte, 2), LOG_NET); |
| } |
| }); |
| |
| io.register_write(this.port | EN0_TCNTLO, this, function(data_byte) |
| { |
| var pg = this.get_page(); |
| if(pg === 0) |
| { |
| dbg_log("Write tcnt low: " + h(data_byte, 2), LOG_NET); |
| this.tcnt = this.tcnt & ~0xFF | data_byte; |
| } |
| else |
| { |
| dbg_log("Write pg1/0x05 " + h(data_byte, 2), LOG_NET); |
| } |
| }); |
| |
| io.register_write(this.port | EN0_TCNTHI, this, function(data_byte) |
| { |
| var pg = this.get_page(); |
| if(pg === 0) |
| { |
| dbg_log("Write tcnt high: " + h(data_byte, 2), LOG_NET); |
| this.tcnt = this.tcnt & 0xFF | data_byte << 8; |
| } |
| else |
| { |
| dbg_log("Write pg1/0x06 " + h(data_byte, 2), LOG_NET); |
| } |
| }); |
| |
| io.register_read(this.port | EN0_RSR, this, function() |
| { |
| var pg = this.get_page(); |
| if(pg === 0) |
| { |
| return 1 | 1 << 3; // receive status ok |
| } |
| else |
| { |
| dbg_log("Read pg1/0x0c", LOG_NET); |
| return 0; |
| } |
| }); |
| |
| io.register_read(this.port | NE_DATAPORT | 0, this, |
| this.data_port_read16, |
| this.data_port_read16, |
| this.data_port_read32); |
| io.register_write(this.port | NE_DATAPORT | 0, this, |
| this.data_port_write16, |
| this.data_port_write16, |
| this.data_port_write32); |
| } |
| |
| Ne2k.prototype.get_state = function() |
| { |
| var state = []; |
| |
| state[0] = this.isr; |
| state[1] = this.imr; |
| state[2] = this.cr; |
| state[3] = this.dcfg; |
| state[4] = this.rcnt; |
| state[5] = this.tcnt; |
| state[6] = this.tpsr; |
| state[7] = this.rsar; |
| state[8] = this.pstart; |
| state[9] = this.curpg; |
| state[10] = this.boundary; |
| |
| return state; |
| }; |
| |
| Ne2k.prototype.set_state = function(state) |
| { |
| this.isr = state[0]; |
| this.imr = state[1]; |
| this.cr = state[2]; |
| this.dcfg = state[3]; |
| this.rcnt = state[4]; |
| this.tcnt = state[5]; |
| this.tpsr = state[6]; |
| this.rsar = state[7]; |
| this.pstart = state[8]; |
| this.curpg = state[9]; |
| this.boundary = state[10]; |
| }; |
| |
| Ne2k.prototype.do_interrupt = function(ir_mask) |
| { |
| dbg_log("Do interrupt " + h(ir_mask, 2), LOG_NET); |
| this.isr |= ir_mask; |
| |
| if(this.imr & ir_mask) |
| { |
| this.cpu.device_raise_irq(this.irq); |
| } |
| }; |
| |
| Ne2k.prototype.data_port_write = function(data_byte) |
| { |
| dbg_log("Write data port: data=" + h(data_byte & 0xFF, 2) + |
| " rsar=" + h(this.rsar, 4) + |
| " rcnt=" + h(this.rcnt, 4), LOG_NET); |
| |
| this.rcnt--; |
| this.memory[this.rsar++] = data_byte; |
| |
| if(this.rsar >= (this.pstop << 8)) |
| { |
| this.rsar += (this.pstart - this.pstop) << 8; |
| } |
| |
| if(this.rcnt === 0) |
| { |
| this.do_interrupt(ENISR_RDC); |
| } |
| }; |
| |
| Ne2k.prototype.data_port_write16 = function(data) |
| { |
| this.data_port_write(data); |
| |
| if(this.dcfg & 1) |
| { |
| this.data_port_write(data >> 8); |
| } |
| }; |
| |
| Ne2k.prototype.data_port_write32 = function(data) |
| { |
| this.data_port_write(data); |
| this.data_port_write(data >> 8); |
| this.data_port_write(data >> 16); |
| this.data_port_write(data >> 24); |
| }; |
| |
| Ne2k.prototype.data_port_read = function() |
| { |
| var data = this.memory[this.rsar++]; |
| |
| dbg_log("Read data port: data=" + h(data, 2) + |
| " rsar=" + h(this.rsar - 1, 4) + |
| " rcnt=" + h(this.rcnt, 4), LOG_NET); |
| this.rcnt--; |
| |
| if(this.rsar >= (this.pstop << 8)) |
| { |
| this.rsar += (this.pstart - this.pstop) << 8; |
| } |
| |
| if(this.rcnt === 0) |
| { |
| this.do_interrupt(ENISR_RDC); |
| } |
| |
| return data; |
| }; |
| |
| Ne2k.prototype.data_port_read16 = function() |
| { |
| if(this.dcfg & 1) |
| { |
| return this.data_port_read() | this.data_port_read() << 8; |
| } |
| else |
| { |
| return this.data_port_read(); |
| } |
| }; |
| |
| Ne2k.prototype.data_port_read32 = function() |
| { |
| return this.data_port_read() | this.data_port_read() << 8 | |
| this.data_port_read() << 16 | this.data_port_read() << 24; |
| }; |
| |
| Ne2k.prototype.receive = function(data) |
| { |
| // called from the adapter when data is received over the network |
| |
| if(this.cr & 1) |
| { |
| // stop bit set |
| return; |
| } |
| |
| this.bus.send("eth-receive-end", [data.length]); |
| |
| if(data.length < 60) |
| { |
| var old = data; |
| data = new Uint8Array(60); |
| data.set(old) |
| } |
| |
| var offset = this.curpg << 8; |
| var total_length = data.length + 4; |
| var data_start = offset + 4; |
| var next = this.curpg + 1 + (total_length >> 8); |
| |
| var end = offset + total_length; |
| |
| if(end > this.memory.length) |
| { |
| // shouldn't happen because at this size it can't cross a page |
| dbg_assert(data.length >= 60); |
| |
| var cut = this.memory.length - data_start; |
| this.memory.set(data.subarray(0, cut), data_start); |
| this.memory.set(data.subarray(cut), START_RX_PAGE); |
| dbg_log("rcv cut=" + h(cut), LOG_NET); |
| } |
| else |
| { |
| this.memory.set(data, data_start); |
| } |
| |
| if(next >= this.pstop) |
| { |
| next += this.pstart - this.pstop; |
| } |
| |
| // write packet header |
| this.memory[offset] = ENRSR_RXOK; // status |
| this.memory[offset + 1] = next; |
| this.memory[offset + 2] = total_length; |
| this.memory[offset + 3] = total_length >> 8; |
| |
| this.curpg = next; |
| |
| dbg_log("rcv offset=" + h(offset) + " len=" + h(total_length) + " next=" + h(next), LOG_NET); |
| |
| this.do_interrupt(ENISR_RX); |
| }; |
| |
| Ne2k.prototype.get_page = function() |
| { |
| return this.cr & 0xC0; |
| }; |