/*
- * (C) Copyright 2014 Leo C. <erbl259-lmu@yahoo.de>
+ * (C) Copyright 2014-2016 Leo C. <erbl259-lmu@yahoo.de>
*
- * SPDX-License-Identifier: GPL-2.0+
+ * SPDX-License-Identifier: GPL-2.0
*/
+#include "z180-serv.h"
#include "common.h"
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <util/atomic.h>
+#include "config.h"
#include "background.h"
#include "env.h"
#include "ff.h"
#include "z80-if.h"
#include "debug.h"
#include "print-utils.h"
-#include "z180-serv.h"
-
-/*--------------------------------------------------------------------------*/
-
-
-uint8_t z80_get_byte(uint32_t adr)
-{
- uint8_t data;
+#include "timer.h"
+#include "time.h"
+#include "bcd.h"
+#include "rtc.h"
- z80_bus_cmd(Request);
- data = z80_read(adr);
- z80_bus_cmd(Release);
+#define DEBUG_CPM_SDIO 0 /* set to 1 to debug */
- return data;
-}
+#define debug_cpmsd(fmt, args...) \
+ debug_cond(DEBUG_CPM_SDIO, fmt, ##args)
/*--------------------------------------------------------------------------*/
msg_xmit(1, 3, len, msg);
}
+/* get timer */
+void do_msg_get_timer(uint8_t subf, int len, uint8_t * msg)
+{
+ uint32_t time_ms = (len >= 4) ? *(uint32_t *) msg : 0;
+
+ time_ms = get_timer(time_ms);
+ msg_xmit(3, subf, sizeof(time_ms), (uint8_t *) &time_ms);
+}
+
/* ---------------------------------------------------------------------------*/
-#define MAX_DRIVE 2
-#define BLOCK_SIZE 512
+#define CPM_DAY_OFFSET ((1978-1900) * 365 + 19) /* 19 leap years */
+/*
+ * Convert CP/M time stamp to a broken-down time structure
+ *
+ */
+int mk_date_time (int len, uint8_t *msg, struct tm *tmp)
+{
+ time_t stamp;
-struct cpm_drive_s {
- uint8_t drv;
- uint8_t device;
- char *img_name;
- FIL fd;
-};
+ if (len != 5)
+ return -1;
-static uint8_t disk_buffer[BLOCK_SIZE];
-static struct cpm_drive_s drv_table[MAX_DRIVE];
+ /* days since 2000-01-01 */
+ long days = msg[3] + (msg[4] << 8) - 8036;
-/*
- db 2 ; disk command
- ds 1 ; subcommand (login/read/write)
- ds 1 ; @adrv (8 bits) +0
- ds 1 ; @rdrv (8 bits) +1
- ds 3 ; @xdph (24 bits) +2
-*/
+ if (days < 0)
+ return -1;
-void do_msg_cpm_login(uint8_t subf, int len, uint8_t * msg)
+ stamp = days * ONE_DAY;
+ stamp += bcd2bin(msg[0]);
+ stamp += bcd2bin(msg[1]) * 60 ;
+ stamp += bcd2bin(msg[2]) * 3600L;
+ gmtime_r(&stamp, tmp);
+ return 0;
+}
+
+void mk_cpm_time(struct tm *tmp, uint8_t cpm_time[5])
{
+ uint16_t days = 1;
+ uint_fast8_t leap=2;
- FRESULT res = 0;
- uint8_t rc = 0;
- uint8_t drv;
- char *np;
- uint8_t result_msg[3];
+ for (int year=78; year < tmp->tm_year; year++) {
+ days = days + 365 + (leap == 0);
+ leap = (leap+1)%4;
+ }
+ days += tmp->tm_yday;
- (void)subf;
+ cpm_time[0] = bin2bcd(tmp->tm_sec);
+ cpm_time[1] = bin2bcd(tmp->tm_min);
+ cpm_time[2] = bin2bcd(tmp->tm_hour);
+ cpm_time[3] = days;
+ cpm_time[4] = days >> 8;
+}
+
+/* get/set cp/m time */
+void do_msg_get_set_time(uint8_t subf, int len, uint8_t * msg)
+{
+ struct tm t;
+ uint8_t cpm_time[5];
+ int rc;
+
+ memset(cpm_time, 0, ARRAY_SIZE(cpm_time));
+
+ switch (subf) {
+ case 3: /* set date & time */
+ /* initialize t with current time */
+ rc = rtc_get (&t);
- if (len != 5) { /* TODO: check adrv, rdrv */
- rc = 0x01;
- goto out;
+ if (rc >= 0) {
+ /* insert new date & time */
+ if (mk_date_time (len, msg, &t) != 0) {
+ my_puts_P(PSTR("## set_time: Bad date format\n"));
+ break;
+ }
+
+ time_t time;
+ time = mk_gmtime(&t);
+ gmtime_r(&time, &t);
+
+ /* and write to RTC */
+ rc = rtc_set (&t);
+ if(rc)
+ my_puts_P(PSTR("## set_time: Set date failed\n"));
+ } else {
+ my_puts_P(PSTR("## set_time: Get date failed\n"));
+ }
+ /* FALL TROUGH */
+ case 2: /* get date & time */
+ rc = rtc_get (&t);
+ if (rc >= 0) {
+ time_t time;
+ time = mk_gmtime(&t);
+ //mktime(&t);
+ gmtime_r(&time, &t);
+
+ mk_cpm_time(&t, cpm_time);
+ } else {
+ my_puts_P(PSTR("## get_time: Get date failed\n"));
+ }
+ break;
}
- debug("\n## login: %c:\n", msg[0]+'A');
+ msg_xmit(3, subf, sizeof(cpm_time), cpm_time);
+}
+
+/* ---------------------------------------------------------------------------*/
+
+static uint8_t drv;
+static uint8_t disk_buffer[CONFIG_CPM_BLOCK_SIZE];
+static struct cpm_drive_s drv_table[CONFIG_CPM_MAX_DRIVE];
+static int handle_cpm_drv_to;
+
+typedef enum {SINGLE, START, MIDDLE, END} dbgmsg_t;
+
+void drv_debug(dbgmsg_t phase, const FLASH char *const fmt, ...) \
+{
+ struct cpm_drive_s *dp = &drv_table[drv];
+
+ if (dp->opt & DRV_OPT_DEBUG) {
+
+ va_list ap;
+ va_start (ap, fmt);
+ if (phase == SINGLE || phase == START)
+ printf_P(PSTR("# %7lu dsk%d: "), get_timer(0), drv);
- drv = msg[0];
- if ( drv>= MAX_DRIVE) {
- rc = 0x02;
- goto out;
+ vfprintf_P (stdout, fmt, ap);
+
+ if (phase == SINGLE || phase == END)
+ putc('\n', stdout);
+
+ va_end (ap);
}
+}
-/*
- uint32_t dph = ((uint32_t)msg[4] << 16) + ((uint16_t)msg[3] << 8) + msg[2];
-*/
+int drv_list(void)
+{
+ for (uint8_t i = 0; i < CONFIG_CPM_MAX_DRIVE; i++) {
+ struct cpm_drive_s * p = &drv_table[i];
+ if (p->img_name) {
+ printf_P(PSTR(" dsk%d: %2s %3s attached to %s\n"), i,
+ p->opt&DRV_OPT_RO ? "RO":"RW", p->opt&DRV_OPT_DEBUG ? "DBG":"",
+ p->img_name);
+ }
+ }
+ return 0;
+}
- if (drv_table[drv].img_name != NULL) {
- debug("## close: '%s'\n", drv_table[drv].img_name);
- f_close(&drv_table[drv].fd);
- free(drv_table[drv].img_name);
- drv_table[drv].img_name = NULL;
+int drv_detach(uint8_t unit)
+{
+ drv = unit;
+ if (drv < CONFIG_CPM_MAX_DRIVE) {
+ struct cpm_drive_s *p = &drv_table[drv];
+
+ drv_debug(SINGLE, PSTR("detach from '%s'"), p->img_name ? p->img_name : "-");
+
+ if (p->img_name) {
+ f_close(&p->fd);
+ free(p->img_name);
+ p->opt = 0;
+ p->flags &= ~DRV_FLG_DIRTY;
+ p->img_name = NULL;
+
+ uint32_t scb = getenv_ulong(PSTR(ENV_CPM3_SCB), 16, 0);
+ if (scb && (z80_bus_cmd(Request) & ZST_ACQUIRED)) {
+ z80_write(scb + 0xf0, 0xff);
+ z80_write(p->dph + 11, 0xff);
+ z80_bus_cmd(Release);
+ }
+ }
}
+ return 0;
+}
- strcpy_P((char *)disk_buffer, PSTR("dsk0"));
- disk_buffer[3] = msg[0] + '0';
- if (((np = getenv((char*)disk_buffer)) == NULL) ||
- ((drv_table[drv].img_name = strdup(np)) == NULL)) {
- rc = 0x03;
- goto out;
+static int drv_find_file_attached(const char *fn)
+{
+ for (uint8_t i = 0; i < CONFIG_CPM_MAX_DRIVE; i++) {
+ struct cpm_drive_s *p = &drv_table[i];
+ if (p->img_name && !strcmp(fn, p->img_name)) {
+ return i;
+ }
}
+ return -1;
+}
+
+int drv_attach(uint8_t unit, const char *filename, drv_opt_t options)
+{
+ int res;
+
+ drv = unit;
+ if (drv >= CONFIG_CPM_MAX_DRIVE)
+ return AT_RANGE;
+
+ struct cpm_drive_s *p = &drv_table[drv];
+
+ if (options & DRV_OPT_REATTATCH) {
+ if (filename) {
+ return AT_ERROR;
+ }
+
+ if (!p->img_name) {
+ return AT_NOT;
+ }
+
+ /* change options */
+ if ((p->opt ^ options) & DRV_OPT_RO) {
+ f_close(&p->fd);
+ res = f_open(&p->fd, p->img_name,
+ FA_READ | (options&DRV_OPT_RO ? 0 : FA_WRITE));
+ }
+
+ p->opt = options & ~DRV_OPT_REATTATCH;
+
+ } else {
+ if (p->img_name)
+ return AT_ALREADY;
+ if (drv_find_file_attached(filename) >= 0)
+ return AT_OTHER;
- res = f_open(&drv_table[drv].fd, drv_table[drv].img_name,
- FA_WRITE | FA_READ);
+ p->opt = options;
- debug("## open: '%s', (env: '%s'), res: %d\n",
- drv_table[drv].img_name, disk_buffer, res);
+ /* new attachment */
-out:
+ if ((p->img_name = strdup(filename)) == NULL)
+ return AT_NOMEM;
+
+ res = f_open(&p->fd, p->img_name,
+ FA_READ | (options&DRV_OPT_RO ? 0 : FA_WRITE));
+
+ if (!res && f_size(&p->fd) < CONFIG_CPM_DISKSIZE) {
+#if 0
+ unsigned int bw;
+ debug_cpmsd(" expanding image file from %ld to %ld\n",
+ f_size(&p->fd), CONFIG_CPM_DISKSIZE);
+
+ res = f_lseek(&p->fd, CONFIG_CPM_DISKSIZE-CONFIG_CPM_BLOCK_SIZE);
+ if (!res) {
+ memset(disk_buffer, 0xe5, CONFIG_CPM_BLOCK_SIZE);
+ res = f_write(&p->fd, disk_buffer, CONFIG_CPM_BLOCK_SIZE, &bw);
+ if (res || bw < CONFIG_CPM_BLOCK_SIZE) {
+ debug_cpmsd(" failed! res: %d, bytes written: %u\n", res, bw);
+ }
+ p->flags |= DRV_FLG_DIRTY;
+ bg_setstat(handle_cpm_drv_to, 1);
+ }
+#else
+ drv_debug(SINGLE, PSTR("wrong image file size: %ld, should be %ld"),
+ f_size(&p->fd), CONFIG_CPM_DISKSIZE);
+ res = 64;
+#endif
+ }
+ if (res) {
+ drv_detach(drv);
+ return AT_OPEN;
+ }
+ }
+
+ return AT_OK;
+}
+
+
+int cpm_drv_to(int state)
+{
+ static uint32_t ts;
+
+ switch(state) {
+ case 0:
+ break;
+
+ case 1:
+ ts = get_timer(0);
+ state = 2;
+ break;
+
+ case 2:
+ if (get_timer(ts) > 1000) {
+ for (uint_fast8_t i=0; i < CONFIG_CPM_MAX_DRIVE; i++) {
+ if (drv_table[i].flags & DRV_FLG_DIRTY) {
+ drv_table[i].flags &= ~DRV_FLG_DIRTY;
+ f_sync(&drv_table[i].fd);
+ drv = i;
+ drv_debug(SINGLE, PSTR("f_sync"));
+ }
+ }
+ state = 0;
+ }
+ }
+ return state;
+}
+
+static const FLASH char * const FLASH rc_messages[] = {
+ FSTR("OK"),
+ FSTR("Internal error: wrong message len"), /* 01 */
+ FSTR("Invalid relative drive #"), /* 02 */
+ FSTR("Bus timeout"), /* 03 */
+ FSTR("Access byond disk size"), /* 04 */
+ FSTR("Write protect"), /* 05 */
+ FSTR("No media"), /* 06 */
+ FSTR("R/W address == 0 !!!!"), /* 07 */
+ };
+
+void msg_cpm_result(uint8_t subf, uint8_t rc, int res)
+{
+ uint8_t result_msg[3];
if (res)
rc |= 0x80;
result_msg[1] = res;
result_msg[2] = res >> 8;
- if (rc) {
- debug("## error rc: %.02x, res: %d\n", rc, res);
- };
-
- /* send result*/
msg_xmit(2, subf, sizeof(result_msg), result_msg);
-}
+ if (rc)
+ drv_debug(END, PSTR(" rc: %.02x/%d, '%S'"),
+ rc, res, rc_messages[rc & 0x7f]);
+ else
+ drv_debug(END, PSTR(""));
+
+}
/*
db 2 ; disk command
ds 1 ; subcommand (login/read/write)
ds 1 ; @adrv (8 bits) +0
ds 1 ; @rdrv (8 bits) +1
- ds 1 ; @cnt (8 bits) +2
- ds 2 ; @trk (16 bits) +3
- ds 2 ; @sect(16 bits) +5
+ ds 3 ; @xdph (24 bits) +2
+*/
+
+void do_msg_cpm_login(uint8_t subf, int len, uint8_t * msg)
+{
+ struct cpm_drive_s *dp;
+ FRESULT res = 0;
+
+ (void)subf;
+
+ /* Get relative drive number */
+ drv = msg[1];
+ drv_debug(START, PSTR("login"));
+
+ if (len != 5) {
+ return msg_cpm_result(subf, 0x01, res);
+ }
+
+ if ( drv >= CONFIG_CPM_MAX_DRIVE) {
+ /* invalid relative drive number */
+ return msg_cpm_result(subf, 0x02, res);
+ }
+
+ dp = &drv_table[drv];
+ dp->flags &= ~DRV_FLG_OPEN;
+ dp->dph = ((uint32_t)msg[4] << 16) + ((uint16_t)msg[3] << 8) + msg[2];
+
+ if (dp->img_name == NULL) {
+ /* no file attached */
+ return msg_cpm_result(subf, 0x06, res);
+ }
+
+ f_close(&dp->fd);
+ res = f_open(&dp->fd, dp->img_name,
+ FA_READ | (dp->opt&DRV_OPT_RO ? 0 : FA_WRITE));
+
+ dp->flags |= DRV_FLG_OPEN;
+
+ /* send result*/
+ msg_cpm_result(subf, 0x00, res);
+}
+
+
+/*
+ db 2 ; disk command
+ ds 1 ; subcommand (login/read/write)
+ ds 1 ; @adrv (8 bits) +0
+ ds 1 ; @rdrv (8 bits) +1
+ ds 2 ; @trk (16 bits) +2
+ ds 2 ; @sect(16 bits) +4
+ ds 1 ; @cnt (8 bits) +6
ds 3 ; phys. transfer addr +7
*/
+#define ADRV 0
+#define RDRV 1
+#define TRK 2
+#define SEC 4
+#define CNT 6
+#define ADDR 7
+
void do_msg_cpm_rw(uint8_t subf, int len, uint8_t * msg)
{
- uint8_t drv;
+ struct cpm_drive_s *dp;
uint32_t addr;
uint32_t pos;
-
- bool dowrite = (subf == 2);
+ uint16_t track;
+ uint16_t sec;
+ uint8_t secs;
+ bool dowrite;
FRESULT res = 0;
uint8_t rc = 0;
bool buserr = 0;
- uint8_t result_msg[3];
- if (len != 10) { /* TODO: check adrv, rdrv */
- rc = 0x01;
- goto out;
- }
+ drv = msg[RDRV];
+ dowrite = (subf == 2);
+
+ drv_debug(START, PSTR("%2S"), dowrite ? PSTR("W ") : PSTR(" R"));
- drv = msg[0];
- if ( drv>= MAX_DRIVE) {
- rc = 0x02;
- goto out;
+ if (len != 10) {
+ return msg_cpm_result(subf, 0x01, res);
+ }
+ if ( drv>= CONFIG_CPM_MAX_DRIVE) {
+ return msg_cpm_result(subf, 0x02, res);
}
- addr = ((uint32_t)msg[9] << 16) + ((uint16_t)msg[8] << 8) + msg[7];
+ dp = &drv_table[drv];
+ track = (uint16_t)(msg[TRK+1] << 8) + msg[TRK];
+ sec = (uint16_t)(msg[SEC+1] << 8) + msg[SEC];
+ secs = msg[CNT];
+ addr = ((uint32_t)msg[ADDR+2] << 16) + ((uint16_t)msg[ADDR+1] << 8) + msg[ADDR];
- /* bytes = BLOCK_SIZE; */ /* TODO: multi sector count */
- pos = (((uint16_t)(msg[4] << 8) + msg[3]) * 8
- + ((uint32_t)(msg[6] << 8) + msg[5])) * BLOCK_SIZE;
+ if (dp->img_name == NULL) {
+ /* no media */
+ return msg_cpm_result(subf, 0x06, res);
+ }
+ /* TODO: tracks per sector from dpb */
+ pos = (track * 8UL + sec) * CONFIG_CPM_BLOCK_SIZE;
- debug("## cpm_rw: %s %c: trk: %4d, sec: %d, pos: 0x%.5lx, addr: 0x%.5lx\n",
- dowrite ? "write" : " read", msg[0]+'A',
- ((uint16_t)(msg[4] << 8) + msg[3]), msg[5], pos, addr);
+ drv_debug(MIDDLE, PSTR(" T:%4d, S:%2d, cnt:%2d, lba: %.8lx, addr: %.5lx"),
+ track, sec, secs, pos, addr);
+ if (addr == 0) {
+ return msg_cpm_result(subf, 0x07, res);
+ }
+ if (dowrite && dp->opt & DRV_OPT_RO) {
+ return msg_cpm_result(subf, 0x05, res);
+ }
- /* TODO: check bank boundary crossing */
- /*
- if (addr + BLOCK_SIZE > MAX_MEMORY)
- ... = MAX_MEMORY - addr;
- */
+ if (pos + secs * CONFIG_CPM_BLOCK_SIZE > CONFIG_CPM_DISKSIZE) {
+ drv_debug(MIDDLE, PSTR(" access > DISKSIZE:%.8lx!"),
+ CONFIG_CPM_DISKSIZE);
+ return msg_cpm_result(subf, 0x04, res);
+ }
- res = f_lseek(&drv_table[drv].fd, pos);
- if (!res) {
- unsigned int br;
+ res = f_lseek(&dp->fd, pos);
+ while (!res && secs--) {
+ unsigned int brw;
if (dowrite) {
if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) {
buserr = 1;
+ break;
} else {
- z80_read_block(disk_buffer, addr, BLOCK_SIZE);
+ z80_read_block(disk_buffer, addr, CONFIG_CPM_BLOCK_SIZE);
z80_bus_cmd(Release);
- res = f_write(&drv_table[drv].fd, disk_buffer, BLOCK_SIZE, &br);
- if (!res)
- res = f_sync(&drv_table[drv].fd);
}
+ res = f_write(&dp->fd, disk_buffer, CONFIG_CPM_BLOCK_SIZE, &brw);
} else {
- res = f_read(&drv_table[drv].fd, disk_buffer, BLOCK_SIZE, &br);
+ res = f_read(&dp->fd, disk_buffer, CONFIG_CPM_BLOCK_SIZE, &brw);
if (res == FR_OK) {
if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) {
buserr = 1;
+ break;
} else {
- z80_write_block(disk_buffer, addr, br);
+ z80_write_block(disk_buffer, addr, CONFIG_CPM_BLOCK_SIZE);
z80_bus_cmd(Release);
}
}
}
-
- if (br != BLOCK_SIZE) {
- debug("## f_read res: %d, bytes rd/wr: %u\n", res, br);
- dump_ram(disk_buffer, 0, 64, "Read Data");
- res = -1;
+ if (brw != CONFIG_CPM_BLOCK_SIZE) {
+ drv_debug(MIDDLE, PSTR(" short rd/wr: res: %d, brw: %u"),
+ res, brw);
+ res = 64;
}
+ addr += CONFIG_CPM_BLOCK_SIZE;
}
-out:
- if (buserr) {
- debug("Bus timeout\n");
- rc = 0x03;
+ if (dowrite && !res) {
+ dp->flags |= DRV_FLG_DIRTY;
+ bg_setstat(handle_cpm_drv_to, 1);
}
- if (res)
- rc |= 0x80;
-
- result_msg[0] = rc;
- result_msg[1] = res;
- result_msg[2] = res >> 8;
- if (rc) {
- debug("#### error rc: %.02x, res: %d\n", rc, res);
+ if (buserr) {
+ /* Bus timeout. how can this happen? */
+ rc = 0x03;
}
/* send result*/
- msg_xmit(2, subf, sizeof(result_msg), result_msg);
+ msg_cpm_result(subf, rc, res);
}
{ 2,
1, 2,
do_msg_cpm_rw},
+ { 3,
+ 1, 1,
+ do_msg_get_timer},
+ { 3,
+ 2, 3, /* 2: get, 3: set time and date */
+ do_msg_get_set_time},
{ 0xff, /* end mark */
0, 0,
0},
int msg_handling(int state)
{
- uint8_t pending;
+ bool pending;
ATOMIC_BLOCK(ATOMIC_FORCEON) {
pending = (Stat & S_MSG_PENDING) != 0;
}
if (pending) {
- switch (state) {
- case 0: /* need init */
- /* Get address of fifo_list */
+ uint8_t init_request;
+ z80_bus_cmd(Request);
+ init_request = z80_read(0x43);
+ z80_bus_cmd(Release);
+ if ( init_request != 0) {
+ /* Get address of fifo 0 */
z80_bus_cmd(Request);
- uint32_t fifo_list = z80_read(0x40) +
- ((uint16_t) z80_read(0x41) << 8) +
- ((uint32_t) z80_read(0x42) << 16);
+ uint32_t fifo_addr = z80_read(0x40) +
+ ((uint16_t) z80_read(0x40+1) << 8) +
+ ((uint32_t) z80_read(0x40+2) << 16);
+ z80_write(0x43, 0);
z80_bus_cmd(Release);
- if (fifo_list != 0) {
- /* Get address of fifo 0 */
- z80_bus_cmd(Request);
- uint32_t fifo_addr = z80_read(fifo_list) +
- ((uint16_t) z80_read(fifo_list+1) << 8) +
- ((uint32_t) z80_read(fifo_list+2) << 16);
- z80_bus_cmd(Release);
- if (fifo_addr != 0) {
- z80_memfifo_init(fifo_msgin, fifo_addr);
- state = 1;
- }
- }
- break;
- case 1: /* awaiting messages */
+
+ if (fifo_addr != 0) {
+ z80_memfifo_init(fifo_msgin, fifo_addr);
+ state = 1;
+ } else
+ state = 0;
+
+ } else {
check_msg_fifo();
- break;
}
}
{
handle_msg_handling = bg_register(msg_handling, 0);
+ handle_cpm_drv_to = bg_register(cpm_drv_to, 0);
}
void restart_z180_serv(void)
{
z80_bus_cmd(Request);
- z80_write(0x40, 0);
- z80_write(0x41, 0);
- z80_write(0x42, 0);
+ z80_memset(0x40, 0, 4);
z80_bus_cmd(Release);
for (int i = 0; i < NUM_FIFOS; i++)
}
+#if 0
/*--------------------------------------------------------------------------*/
const FLASH uint8_t iniprog[] = {
0x00, // db 0 ;dst
0x00, 0x00, // dw 0 ;count (64k)
};
+#endif
projects / z180-stamp.git / blobdiff