| Line 35... |
Line 35... |
#include "16450.h"
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#include "16450.h"
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#include "sim-config.h"
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#include "sim-config.h"
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#include "pic.h"
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#include "pic.h"
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#include "vapi.h"
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#include "vapi.h"
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#include "sched.h"
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#include "sched.h"
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#include "channel.h"
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#define MIN(a,b) ((a) < (b) ? (a) : (b))
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#define MIN(a,b) ((a) < (b) ? (a) : (b))
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static struct dev_16450 uarts[MAX_UARTS];
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static struct dev_16450 uarts[MAX_UARTS]; /* simulation info */
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static struct channel * channels[MAX_UARTS] = { NULL, }; /* emulation info */
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static int thre_int;
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static int thre_int;
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/* Number of clock cycles (one clock cycle is one call to the uart_clock())
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/* Number of clock cycles (one clock cycle is one call to the uart_clock())
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before a single character is transmitted or received. */
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before a single character is transmitted or received. */
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static unsigned long char_clks(int dll, int dlh, int lcr)
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static unsigned long char_clks(int dll, int dlh, int lcr)
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| Line 306... |
Line 308... |
data |= (uarts[uart].vapi.lcr << 8) | (pe << 16) | (fe << 17) | (uarts[uart].vapi.lcr << 8);
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data |= (uarts[uart].vapi.lcr << 8) | (pe << 16) | (fe << 17) | (uarts[uart].vapi.lcr << 8);
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PRINTF ("vapi_send (%08x, %08x)\n", config.uarts[uart].vapi_id, data);
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PRINTF ("vapi_send (%08x, %08x)\n", config.uarts[uart].vapi_id, data);
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debug (4, "vapi_send (%08x, %08x)\n", config.uarts[uart].vapi_id, data);
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debug (4, "vapi_send (%08x, %08x)\n", config.uarts[uart].vapi_id, data);
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vapi_send (config.uarts[uart].vapi_id, data);
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vapi_send (config.uarts[uart].vapi_id, data);
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} else {
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} else {
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fputc((int)(uarts[uart].iregs.txser & 0xFF), uarts[uart].txfs);
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char buffer[1] = { uarts[uart].iregs.txser & 0xFF };
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fflush(uarts[uart].txfs);
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channel_write(channels[uart], buffer, 1);
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}
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}
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}
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}
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uarts[uart].istat.txser_full = 0;
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uarts[uart].istat.txser_full = 0;
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uarts[uart].istat.txser_clks = 0;
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uarts[uart].istat.txser_clks = 0;
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}
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}
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| Line 342... |
Line 344... |
SCHED_ADD (uart_clock16, i, runtime.sim.cycles + UART_CLOCK_DIVIDER);
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SCHED_ADD (uart_clock16, i, runtime.sim.cycles + UART_CLOCK_DIVIDER);
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/* If VAPI is not selected, UART communicates with two file streams;
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/* If VAPI is not selected, UART communicates with two file streams;
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if VAPI is selected, we use VAPI streams. */
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if VAPI is selected, we use VAPI streams. */
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/* if txfs is corrupted, skip this uart. */
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/* if txfs is corrupted, skip this uart. */
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if (!config.uarts[i].vapi_id && !uarts[i].txfs) return;
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if (!config.uarts[i].vapi_id && !channel_ok(channels[i])) return;
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if (uarts[i].vapi.next_break_cnt >= 0)
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if (uarts[i].vapi.next_break_cnt >= 0)
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if (--uarts[i].vapi.next_break_cnt < 0) {
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if (--uarts[i].vapi.next_break_cnt < 0) {
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if (!(uarts[i].vapi.cur_break = uarts[i].vapi.next_break))
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if (!(uarts[i].vapi.cur_break = uarts[i].vapi.next_break))
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uarts[i].istat.break_set = 0;
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uarts[i].istat.break_set = 0;
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| Line 431... |
Line 433... |
} else {
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} else {
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if (!config.uarts[i].vapi_id) {
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if (!config.uarts[i].vapi_id) {
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if(uarts[i].istat.rxser_full == 0) {
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if(uarts[i].istat.rxser_full == 0) {
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if (uarts[i].slowdown)
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if (uarts[i].slowdown)
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uarts[i].slowdown--;
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uarts[i].slowdown--;
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else if((retval = fgetc(uarts[i].rxfs)) != EOF) {
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else {
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uarts[i].iregs.rxser = (char)retval;
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char buffer[1];
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retval = channel_read(channels[i], buffer, 1);
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if(retval < 0)
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perror(config.uarts[i].channel);
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else if(retval > 0) {
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uarts[i].iregs.rxser = buffer[0];
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uarts[i].istat.rxser_full = 1;
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uarts[i].istat.rxser_full = 1;
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} else uarts[i].slowdown = UART_FGETC_SLOWDOWN;
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} else
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uarts[i].slowdown = UART_FGETC_SLOWDOWN;
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}
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}
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}
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} else { /* VAPI */
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} else { /* VAPI */
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int received = 0;
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int received = 0;
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/* do not handle commands while receiving */
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/* do not handle commands while receiving */
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if (uarts[i].istat.rxser_full) return;
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if (uarts[i].istat.rxser_full) return;
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| Line 561... |
Line 570... |
for(i = 0; i < config.nuarts; i++) {
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for(i = 0; i < config.nuarts; i++) {
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if (config.uarts[i].vapi_id) {
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if (config.uarts[i].vapi_id) {
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if ((config.uarts[i].vapi_id & VAPI_DEVICE_ID) != i) {
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if ((config.uarts[i].vapi_id & VAPI_DEVICE_ID) != i) {
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fprintf (stderr, "ERROR: Wrong vapi_id (0x%x) for uart %i, last byte is required to be %02x; ignoring.\n", config.uarts[i].vapi_id, i, i);
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fprintf (stderr, "ERROR: Wrong vapi_id (0x%x) for uart %i, last byte is required to be %02x; ignoring.\n", config.uarts[i].vapi_id, i, i);
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config.uarts[i].vapi_id = 0;
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config.uarts[i].vapi_id = 0;
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uarts[i].txfs = 0;
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} else {
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} else {
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vapi_install_handler (config.uarts[i].vapi_id, uart_vapi_read);
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vapi_install_handler (config.uarts[i].vapi_id, uart_vapi_read);
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register_memoryarea(config.uarts[i].baseaddr, UART_ADDR_SPACE, 1, 0, uart_read_byte, uart_write_byte);
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register_memoryarea(config.uarts[i].baseaddr, UART_ADDR_SPACE, 1, 0, uart_read_byte, uart_write_byte);
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}
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}
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} else if (config.uarts[i].txfile) { /* MM: Try to create stream. */
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} else if (config.uarts[i].channel[0]) { /* MM: Try to create stream. */
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if (!(uarts[i].rxfs = fopen(config.uarts[i].rxfile, "r"))
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if(channels[i])
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&& !(uarts[i].rxfs = fopen(config.uarts[i].rxfile, "r+"))) {
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channel_close(channels[i]);
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debug (0, "WARNING: UART%d has problems with RX file stream.\n", i);
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else
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channels[i] = channel_init(config.uarts[i].channel);
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if(channel_open(channels[i]) < 0) {
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debug (0, "WARNING: UART%d has problems with channel \"%s\".\n", i, config.uarts[i].channel);
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continue;
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continue;
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}
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}
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uarts[i].txfs = fopen(config.uarts[i].txfile, "a");
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if (config.sim.verbose)
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if (uarts[i].rxfs && uarts[i].txfs && config.sim.verbose) {
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PRINTF("UART%d at 0x%.8x uses ", i, config.uarts[i].baseaddr);
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PRINTF("UART%d at 0x%.8x uses ", i, config.uarts[i].baseaddr);
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PRINTF("%s for RX and %s for TX.\n", config.uarts[i].rxfile, config.uarts[i].txfile);
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} else
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debug (1, "WARNING: UART%d has problems with TX file stream.\n", i);
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register_memoryarea(config.uarts[i].baseaddr, UART_ADDR_SPACE, 1, 0, uart_read_byte, uart_write_byte);
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register_memoryarea(config.uarts[i].baseaddr, UART_ADDR_SPACE, 1, 0, uart_read_byte, uart_write_byte);
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} else {
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debug (0, "WARNING: UART%d has no vapi nor channel specified\n", i);
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continue;
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}
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}
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if (config.uarts[i].uart16550)
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if (config.uarts[i].uart16550)
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uarts[i].fifo_len = 16;
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uarts[i].fifo_len = 16;
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else
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else
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| Line 632... |
Line 642... |
PRINTF("rxser: %d txser: %d\n", uarts[i].istat.rxser_full, uarts[i].istat.txser_full);
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PRINTF("rxser: %d txser: %d\n", uarts[i].istat.rxser_full, uarts[i].istat.txser_full);
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PRINTF("rxbuf: %d txbuf: %d\n", uarts[i].istat.rxbuf_full, uarts[i].istat.txbuf_full);
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PRINTF("rxbuf: %d txbuf: %d\n", uarts[i].istat.rxbuf_full, uarts[i].istat.txbuf_full);
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PRINTF("Using IRQ%i\n", config.uarts[i].irq);
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PRINTF("Using IRQ%i\n", config.uarts[i].irq);
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if (config.uarts[i].vapi_id)
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if (config.uarts[i].vapi_id)
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PRINTF ("Connected to vapi ID=%x\n\n", config.uarts[i].vapi_id);
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PRINTF ("Connected to vapi ID=%x\n\n", config.uarts[i].vapi_id);
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else
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/* TODO: replace by a channel_status
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PRINTF("RX fs: %p TX fs: %p\n\n", uarts[i].rxfs, uarts[i].txfs);
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else
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PRINTF("RX fs: %p TX fs: %p\n\n", uarts[i].rxfs, uarts[i].txfs);
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*/
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}
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}
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}
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}
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No newline at end of file
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No newline at end of file
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