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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,246 @@ | ||
| "use strict"; | ||
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| // https://docs.oasis-open.org/virtio/virtio/v1.2/csd01/virtio-v1.2-csd01.html#x1-2900003 | ||
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| const VIRTIO_NET_F_MAC = 5; | ||
| const VIRTIO_NET_F_CTRL_VQ = 17; | ||
| const VIRTIO_NET_F_STATUS = 16; | ||
| const VIRTIO_NET_F_MQ = 22; | ||
| const VIRTIO_NET_F_CTRL_MAC_ADDR = 23; | ||
| const VIRTIO_NET_F_MTU = 3; | ||
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| const VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET = 0; | ||
| const VIRTIO_NET_CTRL_MAC_ADDR_SET = 1; | ||
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| /** | ||
| * @constructor | ||
| * @param {CPU} cpu | ||
| * @param {BusConnector} bus | ||
| * @param {Boolean} preserve_mac_from_state_image | ||
| */ | ||
| function VirtioNet(cpu, bus, preserve_mac_from_state_image) | ||
| { | ||
| /** @const @type {BusConnector} */ | ||
| this.bus = bus; | ||
| this.id = cpu.devices.net ? 1 : 0; | ||
| this.pairs = 1; | ||
| this.status = 1; | ||
| this.preserve_mac_from_state_image = preserve_mac_from_state_image; | ||
| this.mac = new Uint8Array([ | ||
| 0x00, 0x22, 0x15, | ||
| Math.random() * 255 | 0, | ||
| Math.random() * 255 | 0, | ||
| Math.random() * 255 | 0, | ||
| ]); | ||
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| this.bus.send("net" + this.id + "-mac", format_mac(this.mac)); | ||
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| const queues = []; | ||
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| for(let i = 0; i < this.pairs; ++i) | ||
| { | ||
| queues.push({size_supported: 32, notify_offset: 0}); | ||
| queues.push({size_supported: 32, notify_offset: 1}); | ||
| } | ||
| queues.push({ | ||
| size_supported: 16, | ||
| notify_offset: 2, | ||
| }); | ||
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| /** @type {VirtIO} */ | ||
| this.virtio = new VirtIO(cpu, | ||
| { | ||
| name: "virtio-net", | ||
| pci_id: 0x0A << 3, | ||
| device_id: 0x1041, | ||
| subsystem_device_id: 1, | ||
| common: | ||
| { | ||
| initial_port: 0xC800, | ||
| queues: queues, | ||
| features: | ||
| [ | ||
| VIRTIO_NET_F_MAC, | ||
| VIRTIO_NET_F_STATUS, | ||
| VIRTIO_NET_F_MQ, | ||
| VIRTIO_NET_F_MTU, | ||
| VIRTIO_NET_F_CTRL_VQ, | ||
| VIRTIO_NET_F_CTRL_MAC_ADDR, | ||
| VIRTIO_F_VERSION_1, | ||
| ], | ||
| on_driver_ok: () => {}, | ||
| }, | ||
| notification: | ||
| { | ||
| initial_port: 0xC900, | ||
| single_handler: false, | ||
| handlers: | ||
| [ | ||
| (queue_id) => | ||
| { | ||
| // TODO: Full buffer looks like an empty buffer so prevent it from filling | ||
| // The kernel gives us a prefilled one, so throw the first bufchain so | ||
| // it doesnt look filled. | ||
|
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| const queue = this.virtio.queues[queue_id]; | ||
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| const desc_idx = queue.avail_get_entry(queue.avail_last_idx); | ||
| const bufchain = new VirtQueueBufferChain(queue, desc_idx); | ||
| queue.avail_last_idx = queue.avail_last_idx + 1 & queue.mask; | ||
| this.virtio.queues[0].push_reply(bufchain); | ||
| this.virtio.queues[0].flush_replies(); | ||
| }, | ||
| (queue_id) => | ||
| { | ||
| const queue = this.virtio.queues[queue_id]; | ||
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| while(queue.has_request()) | ||
| { | ||
| const bufchain = queue.pop_request(); | ||
| const buffer = new Uint8Array(bufchain.length_readable); | ||
| bufchain.get_next_blob(buffer); | ||
| this.bus.send("net" + this.id + "-send", buffer.subarray(12)); | ||
| this.virtio.queues[queue_id].push_reply(bufchain); | ||
| } | ||
| this.virtio.queues[queue_id].flush_replies(); | ||
| }, | ||
| (queue_id) => | ||
| { | ||
| if(queue_id !== this.pairs * 2) | ||
| { | ||
| dbg_assert(false, "VirtioConsole Notified for wrong queue: " + queue_id + | ||
| " (expected queue_id of 3)"); | ||
| return; | ||
| } | ||
| const queue = this.virtio.queues[queue_id]; | ||
|
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| while(queue.has_request()) | ||
| { | ||
| const bufchain = queue.pop_request(); | ||
| const buffer = new Uint8Array(bufchain.length_readable); | ||
| bufchain.get_next_blob(buffer); | ||
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| const parts = marshall.Unmarshall(["b", "b"], buffer, { offset : 0 }); | ||
| const xclass = parts[0]; | ||
| const command = parts[1]; | ||
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| //this.Ack(queue_id, bufchain); | ||
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| switch(xclass << 8 | command) { | ||
| case 4 << 8 | VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET: | ||
| const data = marshall.Unmarshall(["h"], buffer, { offset : 2 }); | ||
| dbg_assert(data[0] === 1); | ||
| this.Send(queue_id, bufchain, new Uint8Array([0])); | ||
| break; | ||
| case 1 << 8 | VIRTIO_NET_CTRL_MAC_ADDR_SET: | ||
| this.mac = buffer.subarray(2, 8); | ||
| this.Send(queue_id, bufchain, new Uint8Array([0])); | ||
| this.bus.send("net" + this.id + "-mac", format_mac(this.mac)); | ||
| break; | ||
| default: | ||
| dbg_assert(false," VirtioConsole received unknown command: " + xclass + ":" + command); | ||
| this.Send(queue_id, bufchain, new Uint8Array([1])); | ||
| return; | ||
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| } | ||
| } | ||
| }, | ||
| ], | ||
| }, | ||
| isr_status: | ||
| { | ||
| initial_port: 0xC700, | ||
| }, | ||
| device_specific: | ||
| { | ||
| initial_port: 0xC600, | ||
| struct: | ||
| [0,1,2,3,4,5].map((v,k) => ({ | ||
| bytes: 1, | ||
| name: "mac_" + k, | ||
| read: () => this.mac[k], | ||
| write: data => { /* read only */ }, | ||
| })).concat( | ||
| [ | ||
| { | ||
| bytes: 2, | ||
| name: "status", | ||
| read: () => this.status, | ||
| write: data => { /* read only */ }, | ||
| }, | ||
| { | ||
| bytes: 2, | ||
| name: "max_pairs", | ||
| read: () => this.pairs, | ||
| write: data => { /* read only */ }, | ||
| }, | ||
| { | ||
| bytes: 2, | ||
| name: "mtu", | ||
| read: () => 1500, | ||
| write: data => {}, | ||
| } | ||
| ]) | ||
| }, | ||
| }); | ||
|
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| this.bus.register("net" + this.id + "-receive", data => { | ||
| const with_header = new Uint8Array(12 + data.byteLength); | ||
| const view = new DataView(with_header.buffer, with_header.byteOffset, with_header.byteLength); | ||
| view.setInt16(10, 1); | ||
| with_header.set(data, 12); | ||
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| const queue = this.virtio.queues[0]; | ||
| if(queue.has_request()) { | ||
| const bufchain = queue.pop_request(); | ||
| bufchain.set_next_blob(with_header); | ||
| this.virtio.queues[0].push_reply(bufchain); | ||
| this.virtio.queues[0].flush_replies(); | ||
| } else { | ||
| console.log("No buffer to write into!"); | ||
| } | ||
| }, this); | ||
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| } | ||
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| VirtioNet.prototype.get_state = function() | ||
| { | ||
| const state = []; | ||
| state[0] = this.virtio; | ||
| state[1] = this.id; | ||
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| if(this.preserve_mac_from_state_image) | ||
| { | ||
| this.mac = state[2]; | ||
| this.bus.send("net" + this.id + "-mac", format_mac(this.mac)); | ||
| } | ||
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| return state; | ||
| }; | ||
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| VirtioNet.prototype.set_state = function(state) | ||
| { | ||
| this.virtio.set_state(state[0]); | ||
| }; | ||
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| VirtioNet.prototype.Reset = function() { | ||
|
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| }; | ||
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| VirtioNet.prototype.Send = function (queue_id, bufchain, blob) | ||
| { | ||
| bufchain.set_next_blob(blob); | ||
| this.virtio.queues[queue_id].push_reply(bufchain); | ||
| this.virtio.queues[queue_id].flush_replies(); | ||
| }; | ||
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| VirtioNet.prototype.Ack = function (queue_id, bufchain) | ||
| { | ||
| //bufchain.set_next_blob(new Uint8Array(0)); | ||
| this.virtio.queues[queue_id].push_reply(bufchain); | ||
| this.virtio.queues[queue_id].flush_replies(); | ||
| }; |
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