+++ /dev/null
-/*
- * This file is part of the Palacios Virtual Machine Monitor developed
- * by the V3VEE Project with funding from the United States National
- * Science Foundation and the Department of Energy.
- *
- * The V3VEE Project is a joint project between Northwestern University
- * and the University of New Mexico. You can find out more at
- * http://www.v3vee.org
- *
- * Copyright (c) 2008, Jack Lange <jarusl@cs.northwestern.edu>
- * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org>
- * All rights reserved.
- *
- * Author: Jack Lange <jarusl@cs.northwestern.edu>
- *
- * This is free software. You are permitted to use,
- * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
- */
-
-#include <palacios/vmm.h>
-#include <palacios/vmm_dev_mgr.h>
-
-#define COM1_DATA_PORT 0x3f8
-#define COM1_IRQ_ENABLE_PORT 0x3f9
-#define COM1_DIV_LATCH_LSB_PORT 0x3f8
-#define COM1_DIV_LATCH_MSB_PORT 0x3f9
-#define COM1_IIR_PORT 0x3fa
-#define COM1_FIFO_CTRL_PORT 0x3fa
-#define COM1_LINE_CTRL_PORT 0x3fb
-#define COM1_MODEM_CTRL_PORT 0x3fc
-#define COM1_LINE_STATUS_PORT 0x3fd
-#define COM1_MODEM_STATUS_PORT 0x3fe
-#define COM1_SCRATCH_PORT 0x3ff
-
-#define COM2_DATA_PORT 0x2f8
-#define COM2_IRQ_ENABLE_PORT 0x2f9
-#define COM2_DIV_LATCH_LSB_PORT 0x2f8
-#define COM2_DIV_LATCH_MSB_PORT 0x2f9
-#define COM2_IIR_PORT 0x2fa
-#define COM2_FIFO_CTRL_PORT 0x2fa
-#define COM2_LINE_CTRL_PORT 0x2fb
-#define COM2_MODEM_CTRL_PORT 0x2fc
-#define COM2_LINE_STATUS_PORT 0x2fd
-#define COM2_MODEM_STATUS_PORT 0x2fe
-#define COM2_SCRATCH_PORT 0x2ff
-
-#define COM3_DATA_PORT 0x3e8
-#define COM3_IRQ_ENABLE_PORT 0x3e9
-#define COM3_DIV_LATCH_LSB_PORT 0x3e8
-#define COM3_DIV_LATCH_MSB_PORT 0x3e9
-#define COM3_IIR_PORT 0x3ea
-#define COM3_FIFO_CTRL_PORT 0x3ea
-#define COM3_LINE_CTRL_PORT 0x3eb
-#define COM3_MODEM_CTRL_PORT 0x3ec
-#define COM3_LINE_STATUS_PORT 0x3ed
-#define COM3_MODEM_STATUS_PORT 0x3ee
-#define COM3_SCRATCH_PORT 0x3ef
-
-#define COM4_DATA_PORT 0x2e8
-#define COM4_IRQ_ENABLE_PORT 0x2e9
-#define COM4_DIV_LATCH_LSB_PORT 0x2e8
-#define COM4_DIV_LATCH_MSB_PORT 0x2e9
-#define COM4_IIR_PORT 0x2ea
-#define COM4_FIFO_CTRL_PORT 0x2ea
-#define COM4_LINE_CTRL_PORT 0x2eb
-#define COM4_MODEM_CTRL_PORT 0x2ec
-#define COM4_LINE_STATUS_PORT 0x2ed
-#define COM4_MODEM_STATUS_PORT 0x2ee
-#define COM4_SCRATCH_PORT 0x2ef
-
-
-
-struct irq_enable_reg {
- uint_t erbfi : 1; // Enable Receiver Buffer full interrupt
- uint_t etbei : 1; // Enable Transmit buffer empty interrupt
- uint_t elsi : 1; // Enable Line Status Interrupt
- uint_t edssi : 1; // Enable Delta Status signals interrupt
- uint_t rsvd : 4; // MBZ
-};
-
-
-
-// Interrupt IDs (in priority order, highest is first)
-#define STATUS_IRQ_LSR_OE_SET 0x3
-#define STATUS_IRQ_LSR_PE_SET 0x3
-#define STATUS_IRQ_LSR_FE_SET 0x3
-#define STATUS_IRQ_LSR_BI_SET 0x3
-#define RX_IRQ_DR 0x2
-#define RX_IRQ_TRIGGER_LEVEL 0x2
-#define FIFO_IRQ 0x6
-#define TX_IRQ_THRE 0x1
-#define MODEL_IRQ_DELTA_SET 0x0
-
-struct irq_id_reg {
- uint_t pending : 1; // Interrupt pending (0=interrupt pending)
- uint_t iid : 3; // Interrupt Identification
- uint_t rsvd : 2; // MBZ
- uint_t fifo_en : 2; // FIFO enable
-};
-
-struct fifo_ctrl_reg {
- uint_t enable : 1; // enable fifo
- uint_t rfres : 1; // RX FIFO reset
- uint_t xfres : 1; // TX FIFO reset
- uint_t dma_sel : 1; // DMA mode select
- uint_t rsvd : 2; // MBZ
- uint_t rx_trigger: 2; // RX FIFO trigger level select
-};
-
-struct line_ctrl_reg {
- uint_t word_len : 2; // word length select
- uint_t stop_bits : 1; // Stop Bit select
- uint_t parity_enable : 1; // Enable parity
- uint_t even_sel : 1; // Even Parity Select
- uint_t stick_parity : 1; // Stick Parity Select
- uint_t sbr : 1; // Set Break
- uint_t dlab : 1; // Divisor latch access bit
-};
-
-
-struct modem_ctrl_reg {
- uint_t dtr : 1;
- uint_t rts : 1;
- uint_t out1 : 1;
- uint_t out2 : 1;
- uint_t loop : 1; // loopback mode
- uint_t rsvd : 3; // MBZ
-};
-
-
-struct line_status_reg {
- uint_t rbf : 1; // Receiver Buffer Full
- uint_t oe : 1; // Overrun error
- uint_t pe : 1; // Parity Error
- uint_t fe : 1; // Framing Error
- uint_t brk : 1; // broken line detected
- uint_t thre : 1; // Transmitter holding register empty
- uint_t temt : 1; // Transmitter Empty
- uint_t fifo_err : 1; // at least one error is pending in the RX FIFO chain
-};
-
-
-struct modem_status_reg {
- uint_t dcts : 1; // Delta Clear To Send
- uint_t ddsr : 1; // Delta Data Set Ready
- uint_t teri : 1; // Trailing Edge Ring Indicator
- uint_t ddcd : 1; // Delta Data Carrier Detect
- uint_t cts : 1; // Clear to Send
- uint_t dsr : 1; // Data Set Ready
- uint_t ri : 1; // Ring Indicator
- uint_t dcd : 1; // Data Carrier Detect
-};
-
-
-#define SERIAL_BUF_LEN 256
-
-struct serial_buffer {
- uint_t head; // most recent data
- uint_t tail; // oldest char
- char buffer[SERIAL_BUF_LEN];
-};
-
-static int queue_data(struct serial_buffer * buf, char data) {
- uint_t next_loc = (buf->head + 1) % SERIAL_BUF_LEN;
-
- if (next_loc == buf->tail) {
- return -1;
- }
-
- buf->buffer[next_loc] = data;
- buf->head = next_loc;
-
- return 0;
-}
-
-static int dequeue_data(struct serial_buffer * buf, char * data) {
- uint_t next_tail = (buf->tail + 1) % SERIAL_BUF_LEN;
-
- if (buf->head == buf->tail) {
- return -1;
- }
-
- *data = buf->buffer[buf->tail];
- buf->tail = next_tail;
-
- return 0;
-}
-
-
-struct serial_port {
- char ier;
- char iir;
- char fcr;
- char lcr;
- char mcr;
- char lsr;
- char msr;
-
- struct serial_buffer tx_buffer;
- struct serial_buffer rx_buffer;
-};
-
-
-struct serial_state {
- struct serial_port com1;
- struct serial_port com2;
- struct serial_port com3;
- struct serial_port com4;
-};
-
-
-static int write_data_port(ushort_t port, void * src, uint_t length, struct vm_device * dev) {
- struct serial_state * state = (struct serial_state *)dev->private_data;
- char * val = (char *)src;
- PrintDebug("Write to Data Port 0x%x (val=%x)\n", port, *(char*)src);
-
- if (length != 1) {
- PrintDebug("Invalid length(%d) in write to 0x%x\n", length, port);
- return -1;
- }
-
- switch (port) {
- case COM1_DATA_PORT:
- queue_data(&(state->com1.tx_buffer), *val);
- break;
- case COM2_DATA_PORT:
- queue_data(&(state->com2.tx_buffer), *val);
- break;
- case COM3_DATA_PORT:
- queue_data(&(state->com3.tx_buffer), *val);
- break;
- case COM4_DATA_PORT:
- queue_data(&(state->com4.tx_buffer), *val);
- break;
- default:
- return -1;
- }
-
-
- return length;
-}
-
-
-
-static int read_data_port(ushort_t port, void * dst, uint_t length, struct vm_device * dev) {
- struct serial_state * state = (struct serial_state *)dev->private_data;
- char * val = (char *)dst;
- PrintDebug("Read from Data Port 0x%x\n", port);
-
- if (length != 1) {
- PrintDebug("Invalid length(%d) in write to 0x%x\n", length, port);
- return -1;
- }
-
- switch (port) {
- case COM1_DATA_PORT:
- dequeue_data(&(state->com1.tx_buffer), val);
- break;
- case COM2_DATA_PORT:
- dequeue_data(&(state->com2.tx_buffer), val);
- break;
- case COM3_DATA_PORT:
- dequeue_data(&(state->com3.tx_buffer), val);
- break;
- case COM4_DATA_PORT:
- dequeue_data(&(state->com4.tx_buffer), val);
- break;
- default:
- return -1;
- }
-
-
- return length;
-}
-
-
-
-static int handle_ier_write(struct serial_port * com, struct irq_enable_reg * ier) {
-
-
- return -1;
-}
-
-
-static int write_ctrl_port(ushort_t port, void * src, uint_t length, struct vm_device * dev) {
- struct serial_state * state = (struct serial_state *)dev->private_data;
- char * val = (char *)src;
- PrintDebug("Write to Control Port (val=%x)\n", *(char *)src);
-
- if (length != 1) {
- PrintDebug("Invalid Write length to control port %d\n", port);
- return -1;
- }
-
- switch (port) {
- case COM1_IRQ_ENABLE_PORT:
- if (handle_ier_write(&(state->com1), (struct irq_enable_reg *)val) == -1) {
- return -1;
- }
- break;
- case COM2_IRQ_ENABLE_PORT:
- if (handle_ier_write(&(state->com2), (struct irq_enable_reg *)val) == -1) {
- return -1;
- }
- break;
- case COM3_IRQ_ENABLE_PORT:
- if (handle_ier_write(&(state->com3), (struct irq_enable_reg *)val) == -1) {
- return -1;
- }
- break;
- case COM4_IRQ_ENABLE_PORT:
- if (handle_ier_write(&(state->com4), (struct irq_enable_reg *)val) == -1) {
- return -1;
- }
- break;
-
- case COM1_FIFO_CTRL_PORT:
- case COM2_FIFO_CTRL_PORT:
- case COM3_FIFO_CTRL_PORT:
- case COM4_FIFO_CTRL_PORT:
-
- case COM1_LINE_CTRL_PORT:
- case COM2_LINE_CTRL_PORT:
- case COM3_LINE_CTRL_PORT:
- case COM4_LINE_CTRL_PORT:
-
- case COM1_MODEM_CTRL_PORT:
- case COM2_MODEM_CTRL_PORT:
- case COM3_MODEM_CTRL_PORT:
- case COM4_MODEM_CTRL_PORT:
-
-
-
- default:
- return -1;
- }
-
-
- return -1;
-}
-
-
-
-
-static int read_ctrl_port(ushort_t port, void * dst, uint_t length, struct vm_device * dev) {
- struct serial_state * state = (struct serial_state *)dev->private_data;
- char * val = (char *)dst;
- PrintDebug("Read from Control Port\n");
-
- if (length != 1) {
- PrintDebug("Invalid Read length to control port\n");
- return -1;
- }
-
- switch (port) {
- case COM1_IRQ_ENABLE_PORT:
- *val = state->com1.ier;
- break;
- case COM2_IRQ_ENABLE_PORT:
- *val = state->com2.ier;
- break;
- case COM3_IRQ_ENABLE_PORT:
- *val = state->com3.ier;
- break;
- case COM4_IRQ_ENABLE_PORT:
- *val = state->com4.ier;
- break;
-
- case COM1_FIFO_CTRL_PORT:
- *val = state->com1.fcr;
- break;
- case COM2_FIFO_CTRL_PORT:
- *val = state->com2.fcr;
- break;
- case COM3_FIFO_CTRL_PORT:
- *val = state->com3.fcr;
- break;
- case COM4_FIFO_CTRL_PORT:
- *val = state->com4.fcr;
- break;
-
- case COM1_LINE_CTRL_PORT:
- *val = state->com1.lcr;
- break;
- case COM2_LINE_CTRL_PORT:
- *val = state->com2.lcr;
- break;
- case COM3_LINE_CTRL_PORT:
- *val = state->com3.lcr;
- break;
- case COM4_LINE_CTRL_PORT:
- *val = state->com4.lcr;
- break;
-
- case COM1_MODEM_CTRL_PORT:
- *val = state->com1.mcr;
- break;
- case COM2_MODEM_CTRL_PORT:
- *val = state->com2.mcr;
- break;
- case COM3_MODEM_CTRL_PORT:
- *val = state->com3.mcr;
- break;
- case COM4_MODEM_CTRL_PORT:
- *val = state->com4.mcr;
- break;
-
- default:
- return -1;
- }
-
- return length;
-}
-
-
-static int write_status_port(ushort_t port, void * src, uint_t length, struct vm_device * dev) {
- PrintDebug("Write to Status Port 0x%x (val=%x)\n", port, *(char *)src);
-
- return -1;
-}
-
-static int read_status_port(ushort_t port, void * dst, uint_t length, struct vm_device * dev) {
- struct serial_state * state = (struct serial_state *)dev->private_data;
- char * val = (char *)dst;
- PrintDebug("Read from Status Port 0x%x\n", port);
-
- if (length != 1) {
- PrintDebug("Invalid Read length to control port\n");
- return -1;
- }
-
- switch (port) {
- case COM1_LINE_STATUS_PORT:
- *val = state->com1.lsr;
- break;
- case COM2_LINE_STATUS_PORT:
- *val = state->com2.lsr;
- break;
- case COM3_LINE_STATUS_PORT:
- *val = state->com3.lsr;
- break;
- case COM4_LINE_STATUS_PORT:
- *val = state->com4.lsr;
- break;
-
- case COM1_MODEM_STATUS_PORT:
- *val = state->com1.msr;
- break;
- case COM2_MODEM_STATUS_PORT:
- *val = state->com2.msr;
- break;
- case COM3_MODEM_STATUS_PORT:
- *val = state->com3.msr;
- break;
- case COM4_MODEM_STATUS_PORT:
- *val = state->com4.msr;
- break;
-
- default:
- return -1;
- }
-
-
-
- return length;
-}
-
-
-
-
-
-static int init_serial_port(struct serial_port * com) {
- //struct irq_enable_reg * ier = (struct irq_enable_reg *)&(com->ier);
- //struct irq_id_reg * iir = (struct irq_id_reg *)&(com->iir);
- //struct fifo_ctrl_reg * fcr = (struct fifo_ctrl_reg *)&(com->fcr);
- //struct line_ctrl_reg * lcr = (struct line_ctrl_reg *)&(com->lcr);
- //struct modem_ctrl_reg * mcr = (struct modem_ctrl_reg *)&(com->mcr);
- //struct line_status_reg * lsr = (struct line_status_reg *)&(com->lsr);
- //struct modem_status_reg * msr = (struct modem_status_reg *)&(com->msr);
-
- com->ier = 0x00;
- com->iir = 0x01;
- com->fcr = 0x00;
- com->lcr = 0x00;
- com->mcr = 0x00;
- com->lsr = 0x60;
- com->msr = 0x00;
-
- return 0;
-}
-
-
-
-static int serial_free(struct vm_device * dev) {
-
-
- v3_dev_unhook_io(dev, COM1_DATA_PORT);
- v3_dev_unhook_io(dev, COM1_IRQ_ENABLE_PORT);
- v3_dev_unhook_io(dev, COM1_FIFO_CTRL_PORT);
- v3_dev_unhook_io(dev, COM1_LINE_CTRL_PORT);
- v3_dev_unhook_io(dev, COM1_MODEM_CTRL_PORT);
- v3_dev_unhook_io(dev, COM1_LINE_STATUS_PORT);
- v3_dev_unhook_io(dev, COM1_MODEM_STATUS_PORT);
- v3_dev_unhook_io(dev, COM1_SCRATCH_PORT);
-
- v3_dev_unhook_io(dev, COM2_DATA_PORT);
- v3_dev_unhook_io(dev, COM2_IRQ_ENABLE_PORT);
- v3_dev_unhook_io(dev, COM2_FIFO_CTRL_PORT);
- v3_dev_unhook_io(dev, COM2_LINE_CTRL_PORT);
- v3_dev_unhook_io(dev, COM2_MODEM_CTRL_PORT);
- v3_dev_unhook_io(dev, COM2_LINE_STATUS_PORT);
- v3_dev_unhook_io(dev, COM2_MODEM_STATUS_PORT);
- v3_dev_unhook_io(dev, COM2_SCRATCH_PORT);
-
- v3_dev_unhook_io(dev, COM3_DATA_PORT);
- v3_dev_unhook_io(dev, COM3_IRQ_ENABLE_PORT);
- v3_dev_unhook_io(dev, COM3_FIFO_CTRL_PORT);
- v3_dev_unhook_io(dev, COM3_LINE_CTRL_PORT);
- v3_dev_unhook_io(dev, COM3_MODEM_CTRL_PORT);
- v3_dev_unhook_io(dev, COM3_LINE_STATUS_PORT);
- v3_dev_unhook_io(dev, COM3_MODEM_STATUS_PORT);
- v3_dev_unhook_io(dev, COM3_SCRATCH_PORT);
-
- v3_dev_unhook_io(dev, COM4_DATA_PORT);
- v3_dev_unhook_io(dev, COM4_IRQ_ENABLE_PORT);
- v3_dev_unhook_io(dev, COM4_FIFO_CTRL_PORT);
- v3_dev_unhook_io(dev, COM4_LINE_CTRL_PORT);
- v3_dev_unhook_io(dev, COM4_MODEM_CTRL_PORT);
- v3_dev_unhook_io(dev, COM4_LINE_STATUS_PORT);
- v3_dev_unhook_io(dev, COM4_MODEM_STATUS_PORT);
- v3_dev_unhook_io(dev, COM4_SCRATCH_PORT);
-
- return 0;
-}
-
-
-
-static struct v3_device_ops dev_ops = {
- .free = serial_free,
- .reset = NULL,
- .start = NULL,
- .stop = NULL,
-};
-
-
-
-
-static int serial_init(struct guest_info * vm, void * cfg_data) {
- struct serial_state * state = NULL;
-
- state = (struct serial_state *)V3_Malloc(sizeof(struct serial_state));
-
- V3_ASSERT(state != NULL);
-
- struct vm_device * dev = v3_allocate_device("SERIAL", &dev_ops, state);
-
-
- if (v3_attach_device(vm, dev) == -1) {
- PrintError("Could not attach device %s\n", "SERIAL");
- return -1;
- }
-
-
-
- init_serial_port(&(state->com1));
- init_serial_port(&(state->com2));
- init_serial_port(&(state->com3));
- init_serial_port(&(state->com4));
-
- v3_dev_hook_io(dev, COM1_DATA_PORT, &read_data_port, &write_data_port);
- v3_dev_hook_io(dev, COM1_IRQ_ENABLE_PORT, &read_ctrl_port, &write_ctrl_port);
- v3_dev_hook_io(dev, COM1_FIFO_CTRL_PORT, &read_ctrl_port, &write_ctrl_port);
- v3_dev_hook_io(dev, COM1_LINE_CTRL_PORT, &read_ctrl_port, &write_ctrl_port);
- v3_dev_hook_io(dev, COM1_MODEM_CTRL_PORT, &read_ctrl_port, &write_ctrl_port);
- v3_dev_hook_io(dev, COM1_LINE_STATUS_PORT, &read_status_port, &write_status_port);
- v3_dev_hook_io(dev, COM1_MODEM_STATUS_PORT, &read_status_port, &write_status_port);
- v3_dev_hook_io(dev, COM1_SCRATCH_PORT, &read_ctrl_port, &write_ctrl_port);
-
- v3_dev_hook_io(dev, COM2_DATA_PORT, &read_data_port, &write_data_port);
- v3_dev_hook_io(dev, COM2_IRQ_ENABLE_PORT, &read_ctrl_port, &write_ctrl_port);
- v3_dev_hook_io(dev, COM2_FIFO_CTRL_PORT, &read_ctrl_port, &write_ctrl_port);
- v3_dev_hook_io(dev, COM2_LINE_CTRL_PORT, &read_ctrl_port, &write_ctrl_port);
- v3_dev_hook_io(dev, COM2_MODEM_CTRL_PORT, &read_ctrl_port, &write_ctrl_port);
- v3_dev_hook_io(dev, COM2_LINE_STATUS_PORT, &read_status_port, &write_status_port);
- v3_dev_hook_io(dev, COM2_MODEM_STATUS_PORT, &read_status_port, &write_status_port);
- v3_dev_hook_io(dev, COM2_SCRATCH_PORT, &read_ctrl_port, &write_ctrl_port);
-
- v3_dev_hook_io(dev, COM3_DATA_PORT, &read_data_port, &write_data_port);
- v3_dev_hook_io(dev, COM3_IRQ_ENABLE_PORT, &read_ctrl_port, &write_ctrl_port);
- v3_dev_hook_io(dev, COM3_FIFO_CTRL_PORT, &read_ctrl_port, &write_ctrl_port);
- v3_dev_hook_io(dev, COM3_LINE_CTRL_PORT, &read_ctrl_port, &write_ctrl_port);
- v3_dev_hook_io(dev, COM3_MODEM_CTRL_PORT, &read_ctrl_port, &write_ctrl_port);
- v3_dev_hook_io(dev, COM3_LINE_STATUS_PORT, &read_status_port, &write_status_port);
- v3_dev_hook_io(dev, COM3_MODEM_STATUS_PORT, &read_status_port, &write_status_port);
- v3_dev_hook_io(dev, COM3_SCRATCH_PORT, &read_ctrl_port, &write_ctrl_port);
-
- v3_dev_hook_io(dev, COM4_DATA_PORT, &read_data_port, &write_data_port);
- v3_dev_hook_io(dev, COM4_IRQ_ENABLE_PORT, &read_ctrl_port, &write_ctrl_port);
- v3_dev_hook_io(dev, COM4_FIFO_CTRL_PORT, &read_ctrl_port, &write_ctrl_port);
- v3_dev_hook_io(dev, COM4_LINE_CTRL_PORT, &read_ctrl_port, &write_ctrl_port);
- v3_dev_hook_io(dev, COM4_MODEM_CTRL_PORT, &read_ctrl_port, &write_ctrl_port);
- v3_dev_hook_io(dev, COM4_LINE_STATUS_PORT, &read_status_port, &write_status_port);
- v3_dev_hook_io(dev, COM4_MODEM_STATUS_PORT, &read_status_port, &write_status_port);
- v3_dev_hook_io(dev, COM4_SCRATCH_PORT, &read_ctrl_port, &write_ctrl_port);
-
- return 0;
-}
-
-
-device_register("SERIAL", serial_init)
