X-Git-Url: http://cloudbase.mooo.com/gitweb/z180-stamp.git/blobdiff_plain/72f5882239bb88b8a68f305802e0dde37a975604..014840952dc85c55989a23a79b90d4d3f51de15c:/avr/z180-serv.c diff --git a/avr/z180-serv.c b/avr/z180-serv.c index d28cb98..dfdb022 100644 --- a/avr/z180-serv.c +++ b/avr/z180-serv.c @@ -1,109 +1,35 @@ /* + * (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" - - -/* ugly hack to get Z180 loadfile into flash memory */ -#define const const FLASH -#include "../z180/hdrom.h" -#undef const - +#include "debug.h" +#include "print-utils.h" +#include "z180-serv.h" /*--------------------------------------------------------------------------*/ -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; } @@ -131,19 +57,31 @@ 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)); } @@ -155,18 +93,233 @@ 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); +} + +/* ---------------------------------------------------------------------------*/ + +#define MAX_DRIVE 4 +#define BLOCK_SIZE 512 + + +struct cpm_drive_s { + uint8_t drv; + uint8_t device; + char *img_name; + FIL fd; +}; + +static uint8_t disk_buffer[BLOCK_SIZE]; +static struct cpm_drive_s drv_table[MAX_DRIVE]; + +/* + 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 rc = 0; + uint8_t drv; + char *np; + uint8_t result_msg[3]; + + (void)subf; + + if (len != 5) { /* TODO: check adrv, rdrv */ + rc = 0x01; + goto out; + } + + debug("\n## login: %c:\n", msg[0]+'A'); + + + drv = msg[0]; + if ( drv>= MAX_DRIVE) { + rc = 0x02; + goto out; + } + +/* + uint32_t dph = ((uint32_t)msg[4] << 16) + ((uint16_t)msg[3] << 8) + msg[2]; +*/ + + 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; + } + + 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; + } + + + res = f_open(&drv_table[drv].fd, drv_table[drv].img_name, + FA_WRITE | FA_READ); + + debug("## open: '%s', (env: '%s'), res: %d\n", + drv_table[drv].img_name, disk_buffer, res); + +out: + + 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); + }; + + /* send result*/ + 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 1 ; @cnt (8 bits) +2 + ds 2 ; @trk (16 bits) +3 + ds 2 ; @sect(16 bits) +5 + ds 3 ; phys. transfer addr +7 +*/ + +void do_msg_cpm_rw(uint8_t subf, int len, uint8_t * msg) +{ + uint8_t drv; + uint32_t addr; + uint32_t pos; + + bool dowrite = (subf == 2); + 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[0]; + if ( drv>= MAX_DRIVE) { + rc = 0x02; + goto out; + } + + addr = ((uint32_t)msg[9] << 16) + ((uint16_t)msg[8] << 8) + msg[7]; + + /* 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; + + + 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); + + + + /* TODO: check bank boundary crossing */ + /* + if (addr + BLOCK_SIZE > MAX_MEMORY) + ... = MAX_MEMORY - addr; + */ + + + res = f_lseek(&drv_table[drv].fd, pos); + if (!res) { + unsigned int br; + + if (dowrite) { + if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { + buserr = 1; + } else { + z80_read_block(disk_buffer, addr, 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); + } + } else { + res = f_read(&drv_table[drv].fd, disk_buffer, BLOCK_SIZE, &br); + if (res == FR_OK) { + if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) { + buserr = 1; + } else { + z80_write_block(disk_buffer, addr, br); + 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; + } + } + +out: + if (buserr) { + debug("Bus timeout\n"); + rc = 0x03; + } + 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); + } + + /* send result*/ + msg_xmit(2, subf, sizeof(result_msg), result_msg); +} + 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}, { 0xff, /* end mark */ 0, 0, 0}, @@ -186,17 +339,19 @@ 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; } @@ -227,10 +382,10 @@ 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; @@ -245,59 +400,81 @@ 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; - if (state == 3) { - do_message(msglen, buffer); - state = 0; + ATOMIC_BLOCK(ATOMIC_FORCEON) { + pending = (Stat & S_MSG_PENDING) != 0; + Stat &= ~S_MSG_PENDING; } + + 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); +} -void z80_load_mem(void) +void restart_z180_serv(void) { - unsigned sec = 0; - uint32_t sec_base = hdrom_start; - - DBG_P(1, "Loading z80 memory... \n"); - - while (sec < hdrom_sections) { - DBG_P(2, " From: 0x%.5lX to: 0x%.5lX (%5li bytes)\n", - hdrom_address[sec], - hdrom_address[sec]+hdrom_length_of_sections[sec] - 1, - hdrom_length_of_sections[sec]); - - z80_write_block((const FLASH unsigned char *) &hdrom[sec_base], /* src */ - hdrom_address[sec], /* dest */ - hdrom_length_of_sections[sec]); /* len */ - sec_base+=hdrom_length_of_sections[sec]; - sec++; - } + 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); + } /*--------------------------------------------------------------------------*/ - const FLASH uint8_t iniprog[] = { 0xAF, // xor a 0xED, 0x39, 0x36, // out0 (rcr),a ;disable DRAM refresh @@ -335,20 +512,15 @@ 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(); -