X-Git-Url: http://cloudbase.mooo.com/gitweb/z180-stamp.git/blobdiff_plain/534e1dfcb2f6cdfa1cd62913045b832f2189b7aa..845cbdbdd011f875219542dc5916f390cd952514:/avr/z180-serv.c diff --git a/avr/z180-serv.c b/avr/z180-serv.c index a4ff057..0712d8d 100644 --- a/avr/z180-serv.c +++ b/avr/z180-serv.c @@ -1,104 +1,46 @@ /* + * (C) Copyright 2014 Leo C. + * + * SPDX-License-Identifier: GPL-2.0+ */ #include "common.h" -//#include -//#include -//#include -//#include -//#include - - -#include "debug.h" +#include +#include +#include +#include + +#include "background.h" +#include "env.h" +#include "ff.h" #include "serial.h" #include "z80-if.h" +#include "debug.h" +#include "print-utils.h" +#include "z180-serv.h" +#include "timer.h" +#include "time.h" +#include "bcd.h" +#include "rtc.h" +#define DEBUG_CPM_SDIO 0 /* set to 1 to debug */ +#define debug_cpmsd(fmt, args...) \ + debug_cond(DEBUG_CPM_SDIO, fmt, ##args) -/*--------------------------------------------------------------------------*/ - -uint32_t z80_sram_cmp(uint32_t addr, uint32_t length, uint8_t wval, int inc) -{ - uint8_t rval; - int_fast8_t errors = 0; - - DBG_P(1, "SRAM: Check 0x%.5lx byte... ", length); - while (length--) { - if ((rval = z80_read(addr)) != wval) { - if (errors == 0) { - DBG_P(1, "\nSRAM: Address W R\n" \ - " ------------------\n"); - } - errors++; - if (errors > 20) { - DBG_P(1, " ...\n"); - break; - } - DBG_P(1, " 0x%.5lx 0x%.2x 0x%.2x\n", addr, wval, rval); - } - addr++; - wval += inc; - } - DBG_P(1, "Done.\n"); - - return addr; -} - -void z80_sram_fill(uint32_t addr, uint32_t length, uint8_t startval, int inc) -{ - printf("SRAM: Write 0x%.5lx byte... ", length); - while (length--) { - z80_write(addr, startval); - ++addr; - startval += inc; - } - printf("Done.\n"); -} - - -#if 0 -void z80_sram_fill_string(uint32_t addr, int length, const char *text) -{ - char c; - const char *p = text; - - while (length--) { - z80_write(addr++, c = *p++); - if (c == 0) - p = text; - } -} -uint32_t z80_sram_cmp_string(uint32_t addr, int length, const char *text) -{ - char c; - const char *p = text; - - while (length--) { - c = *p++; - if (z80_read(addr) != c) - break; - ++addr; - if (c == 0) - p = text; - } - return addr; -} - -const char * const qbfox = "Zhe quick brown fox jumps over the lazy dog!"; -const char * const qbcat = "Zhe quick brown fox jumps over the lazy cat!"; +/*--------------------------------------------------------------------------*/ -#endif uint8_t z80_get_byte(uint32_t adr) { uint8_t data; - - z80_request_bus(); - data = z80_read(adr), - z80_release_bus(); - + + z80_bus_cmd(Request); + data = z80_read(adr); + z80_bus_cmd(Release); + return data; } @@ -126,19 +68,31 @@ uint32_t msg_to_addr(uint8_t *msg) return addr.as32; } -void do_msg_ini_msgfifo(uint8_t subf, int len, uint8_t * msg) + +static int msg_xmit_header(uint8_t func, uint8_t subf, int len) { - (void)subf; (void)len; + z80_memfifo_putc(fifo_msgout, 0xAE); + z80_memfifo_putc(fifo_msgout, len+2); + z80_memfifo_putc(fifo_msgout, func); + z80_memfifo_putc(fifo_msgout, subf); - z80_init_msg_fifo(msg_to_addr(msg)); + return 0; } +int msg_xmit(uint8_t func, uint8_t subf, int len, uint8_t *msg) +{ + msg_xmit_header(func, subf, len); + while (len--) + z80_memfifo_putc(fifo_msgout, *msg++); + + return 0; +} void do_msg_ini_memfifo(uint8_t subf, int len, uint8_t * msg) { (void)len; - z80_memfifo_init(subf - 1, msg_to_addr(msg)); + z80_memfifo_init(subf, msg_to_addr(msg)); } @@ -150,18 +104,404 @@ void do_msg_char_out(uint8_t subf, int len, uint8_t * msg) putchar(*msg++); } +/* echo message */ +void do_msg_echo(uint8_t subf, int len, uint8_t * msg) +{ + (void)subf; + + /* send re-echo */ + 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 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; + + if (len != 5) + return -1; + + /* days since 2000-01-01 */ + long days = msg[3] + (msg[4] << 8) - 8036; + + if (days < 0) + return -1; + + stamp = days * ONE_DAY; + stamp += bcd2bin(msg[0]); + stamp += bcd2bin(msg[1]) * 60 ; + stamp += bcd2bin(msg[2]) * 3600; + 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; + + for (int year=78; year < tmp->tm_year; year++) { + days = days + 365 + (leap == 0); + leap = (leap+1)%4; + } + days += tmp->tm_yday; + + 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; + + debug("## mk_cpmtime: tm_year: %d, tm_yday: %d, days: %d\n", + tmp->tm_year, tmp->tm_yday, days); +} + +/* 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 (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) { + my_puts_P(PSTR("## get_time: Get date failed\n")); + break; + } + + time_t time; + time = mk_gmtime(&t); + //mktime(&t); + gmtime_r(&time, &t); + + + mk_cpm_time(&t, cpm_time); + break; + } + + msg_xmit(3, subf, sizeof(cpm_time), cpm_time); +} + +/* ---------------------------------------------------------------------------*/ + +#define MAX_DRIVE 4 +#define BLOCK_SIZE 512 +#define TPA_BASE 0x10000 +#define COMMON_BASE 0xC000 + +struct cpm_drive_s { + uint8_t drv; + uint8_t device; + char *img_name; + bool dirty; + FIL fd; +}; + +static uint8_t disk_buffer[BLOCK_SIZE]; +static struct cpm_drive_s drv_table[MAX_DRIVE]; +static int handle_cpm_drv_to; + +#define f_dirty(fp) ((fp)->fs->wflag != 0) + + +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 < MAX_DRIVE; i++) { +// if (&drv_table[i].fd && f_dirty(&drv_table[i].fd)) { + if (drv_table[i].dirty) { + f_sync(&drv_table[i].fd); + drv_table[i].dirty = false; + debug_cpmsd("## %7lu f_sync: %c:\n", get_timer(0), i+'A'); + } + } + state = 0; + } + } + return state; +} + + +void msg_cpm_result(uint8_t subf, uint8_t rc, int res) +{ + uint8_t result_msg[3]; + + if (res) + rc |= 0x80; + + result_msg[0] = rc; + result_msg[1] = res; + result_msg[2] = res >> 8; + + if (rc) { + debug_cpmsd("###%7lu error rc: %.02x, res: %d\n", get_timer(0), rc, res); + } + + msg_xmit(2, subf, sizeof(result_msg), result_msg); +} + +/* + 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 +*/ + +void do_msg_cpm_login(uint8_t subf, int len, uint8_t * msg) +{ + + FRESULT res = 0; + uint8_t drv; + char *np; + + (void)subf; + + if (len != 5) { /* TODO: check adrv, rdrv */ + return msg_cpm_result(subf, 0x01, res); + } + + debug_cpmsd("\n## %7lu login: %c:\n", get_timer(0), msg[0]+'A'); + + + drv = msg[0]; + if ( drv>= MAX_DRIVE) { + return msg_cpm_result(subf, 0x02, res); + } + +/* + uint32_t dph = ((uint32_t)msg[4] << 16) + ((uint16_t)msg[3] << 8) + msg[2]; +*/ + + if (drv_table[drv].img_name != NULL) { + debug_cpmsd("## %7lu close: '%s'\n", get_timer(0), drv_table[drv].img_name); + f_close(&drv_table[drv].fd); + drv_table[drv].dirty = false; + free(drv_table[drv].img_name); + drv_table[drv].img_name = NULL; + } + + 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)) { + return msg_cpm_result(subf, 0x03, res); + } + + + res = f_open(&drv_table[drv].fd, drv_table[drv].img_name, + FA_WRITE | FA_READ); + + debug_cpmsd("## %7lu open: '%s', (env: '%s'), res: %d\n", get_timer(0), + drv_table[drv].img_name, disk_buffer, res); + + /* 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; + uint32_t addr; + uint32_t pos; + uint8_t secs; + bool dowrite = (subf == 2); + FRESULT res = 0; + uint8_t rc = 0; + bool buserr = 0; + + if (len != 10) { /* TODO: check adrv, rdrv */ + return msg_cpm_result(subf, 0x01, res); + } + + drv = msg[ADRV]; + if ( drv>= MAX_DRIVE) { + return msg_cpm_result(subf, 0x02, res); + } + + secs = msg[CNT]; + addr = ((uint32_t)msg[ADDR+2] << 16) + ((uint16_t)msg[ADDR+1] << 8) + msg[ADDR]; + + + /* TODO: tracks per sector from dpb */ + pos = (((uint16_t)(msg[TRK+1] << 8) + msg[TRK]) * 8 + + ((uint32_t)(msg[SEC+1] << 8) + msg[SEC])) * BLOCK_SIZE; + + debug_cpmsd("## %7lu cpm_rw: %s %c: trk:%4d, sec: %d, pos: %.8lx, secs: %2d, " + "addr: %.5lx\n", get_timer(0), dowrite ? "write" : " read", + msg[ADRV]+'A', ((uint16_t)(msg[TRK+1] << 8) + msg[TRK]), msg[SEC], + pos, msg[CNT], addr); + + res = f_lseek(&drv_table[drv].fd, pos); + while (!res && secs--) { + unsigned int cnt, br; + + /* check bank boundary crossing */ + cnt = 0; + if (addr < (TPA_BASE + COMMON_BASE) && + (addr + BLOCK_SIZE) > (TPA_BASE + COMMON_BASE)) { + cnt = (TPA_BASE + COMMON_BASE) - addr; + } + + if (cnt) { + debug_cpmsd("## %67c addr: %.5lx, cnt: %3d\n", ' ', addr, cnt); + debug_cpmsd("## %67c addr: %.5lx, cnt: %3d\n", ' ', addr+cnt-TPA_BASE, BLOCK_SIZE-cnt); + } + + if (dowrite) { + if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { + buserr = 1; + break; + } else { + if (cnt) { + z80_read_block(disk_buffer, addr, cnt); + addr = addr + cnt - TPA_BASE; + } + z80_read_block(disk_buffer+cnt, addr, BLOCK_SIZE - cnt); + z80_bus_cmd(Release); + } + res = f_write(&drv_table[drv].fd, disk_buffer, BLOCK_SIZE, &br); + } else { + res = f_read(&drv_table[drv].fd, disk_buffer, BLOCK_SIZE, &br); + if (res == FR_OK && br == BLOCK_SIZE) { + if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { + buserr = 1; + break; + } else { + if (cnt) { + z80_write_block(disk_buffer, addr, cnt); + addr = addr + cnt - TPA_BASE; + } + z80_write_block(disk_buffer+cnt, addr, BLOCK_SIZE - cnt); + z80_bus_cmd(Release); + } + } + } + + if (br != BLOCK_SIZE) { + debug_cpmsd("## %7lu f_read res: %d, bytes rd/wr: %u\n", get_timer(0), res, br); + dump_ram(disk_buffer, 0, 64, "Read Data"); + res = -1; + } + + addr += BLOCK_SIZE; + } + + if (dowrite && !res) { +// res = f_sync(&drv_table[drv].fd); + drv_table[drv].dirty = true; + bg_setstat(handle_cpm_drv_to, 1); + } + + + if (buserr) { + debug_cpmsd("Bus timeout\n"); + rc = 0x03; + } + + /* send result*/ + msg_cpm_result(subf, rc, res); +} + const FLASH struct msg_item z80_messages[] = { { 0, /* fct nr. */ - 0, 0, /* sub fct nr. from, to */ - do_msg_ini_msgfifo}, - { 0, - 1, 2, + 1, 3, /* sub fct nr. from, to */ do_msg_ini_memfifo}, { 1, 1, 1, do_msg_char_out}, + { 1, + 2, 2, + do_msg_echo}, + { 2, + 0, 0, + do_msg_cpm_login}, + { 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}, @@ -181,17 +521,19 @@ void do_message(int len, uint8_t *msg) sub_fct = *msg++; len -= 2; - while (fct != z80_messages[i].fct) - ++i; + while (fct != z80_messages[i].fct) { + if (z80_messages[i].fct == 0xff) { + DBG_P(1, "do_message: Unknown function: %i, %i\n", + fct, sub_fct); + return; /* TODO: unknown message # */ + } - if (z80_messages[i].fct == 0xff) { - DBG_P(1, "do_message: Unknown function: %i, %i\n", - fct, sub_fct); - return; /* TODO: unknown message # */ + ++i; } while (fct == z80_messages[i].fct) { - if (sub_fct >= z80_messages[i].sub_min && sub_fct <= z80_messages[i].sub_max ) + if (sub_fct >= z80_messages[i].sub_min && + sub_fct <= z80_messages[i].sub_max ) break; ++i; } @@ -222,10 +564,10 @@ void check_msg_fifo(void) static int msglen,idx; static uint8_t buffer[CTRBUF_LEN]; - while (state != 3 && (ch = z80_msg_fifo_getc()) >= 0) { + while ((ch = z80_memfifo_getc(fifo_msgin)) >= 0) { switch (state) { case 0: /* wait for start of message */ - if (ch == 0x81) { + if (ch == 0xAE) { /* TODO: magic number */ msglen = 0; idx = 0; state = 1; @@ -240,35 +582,85 @@ void check_msg_fifo(void) break; case 2: /* get message */ buffer[idx++] = ch; - if (idx == msglen) - state = 3; + if (idx == msglen) { + do_message(msglen, buffer); + state = 0; + } break; } } +} + + +int msg_handling(int state) +{ + uint8_t pending; + + ATOMIC_BLOCK(ATOMIC_FORCEON) { + pending = (Stat & S_MSG_PENDING) != 0; + Stat &= ~S_MSG_PENDING; + } +/* + * TODO: if pending but no message chr --> special condition. ie init,... + */ - if (state == 3) { - do_message(msglen, buffer); - state = 0; + if (pending) { + switch (state) { + case 0: /* need init */ + /* Get address of fifo_list */ + z80_bus_cmd(Request); + uint32_t fifo_list = z80_read(0x40) + + ((uint16_t) z80_read(0x41) << 8) + + ((uint32_t) z80_read(0x42) << 16); + 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 */ + check_msg_fifo(); + break; + } } + + return state; } -/*--------------------------------------------------------------------------*/ +static int handle_msg_handling; -void dump_mem(const FLASH uint8_t *addr, uint32_t len) +void setup_z180_serv(void) { - DBG_P(1, "hdrom dump:"); - while (len) { - DBG_P(1, "\n %.5x:", addr); - for (unsigned i = 0; i<16; i++) - DBG_P(1, " %.2x", *addr++); - len -= len > 16 ? 16 : len; - } - DBG_P(1, "\n"); + + 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_bus_cmd(Release); + + for (int i = 0; i < NUM_FIFOS; i++) + z80_memfifo_init(i, 0); + bg_setstat(handle_msg_handling, 0); +} + +#if 0 +/*--------------------------------------------------------------------------*/ const FLASH uint8_t iniprog[] = { 0xAF, // xor a @@ -307,20 +699,16 @@ const FLASH uint8_t test1[] = { 0x21, 0x1E, 0x00, // ld hl,dmclrt ;load DMA registers 0x06, 0x08, // ld b,dmct_e-dmclrt 0x0E, 0x20, // ld c,sar0l - 0xED, 0x93, // otimr + 0xED, 0x93, // otimr 0x3E, 0xC3, // ld a,0c3h ;dst +1, src +1, burst 0xED, 0x39, 0x31, // out0 (dmode),a ; - 0x3E, 0x62, // ld a,062h ;enable dma0, + 0x3E, 0x62, // ld a,062h ;enable dma0, 0xED, 0x39, 0x30, //cl_1: out0 (dstat),a ;copy 64k 0x18, 0xFB, // jr cl_1 ; - 0x00, 0x00, //dmclrt: dw 0 ;src (inc) + 0x00, 0x00, //dmclrt: dw 0 ;src (inc) 0x00, // db 0 ;src 0x00, 0x00, // dw 0 ;dst (inc), 0x00, // db 0 ;dst 0x00, 0x00, // dw 0 ;count (64k) }; - - - -// check_msg_fifo(); - +#endif