#include "debug.h"
#include "print-utils.h"
#include "z180-serv.h"
+#include "timer.h"
+
+
+#define DEBUG_CPM_SDIO 0 /* set to 1 to debug */
+
+#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)
+{
+ (void)len; (void)msg;
+
+ uint32_t time_ms = get_timer(0);
+
+ msg_xmit(3, subf, sizeof(time_ms), (uint8_t *) &time_ms);
+}
+
/* ---------------------------------------------------------------------------*/
-#define MAX_DRIVE 2
+#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
{
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;
+ return msg_cpm_result(subf, 0x01, res);
}
- debug("\n## login: %c:\n", msg[0]+'A');
+ debug_cpmsd("\n## %7lu login: %c:\n", get_timer(0), msg[0]+'A');
drv = msg[0];
if ( drv>= MAX_DRIVE) {
- rc = 0x02;
- goto out;
+ return msg_cpm_result(subf, 0x02, res);
}
/*
*/
if (drv_table[drv].img_name != NULL) {
- debug("## close: '%s'\n", drv_table[drv].img_name);
+ 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;
}
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;
+ return msg_cpm_result(subf, 0x03, res);
}
res = f_open(&drv_table[drv].fd, drv_table[drv].img_name,
FA_WRITE | FA_READ);
- debug("## open: '%s', (env: '%s'), res: %d\n",
+ debug_cpmsd("## %7lu open: '%s', (env: '%s'), res: %d\n", get_timer(0),
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);
+ 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 1 ; @cnt (8 bits) +2
- ds 2 ; @trk (16 bits) +3
- ds 2 ; @sect(16 bits) +5
+ 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;
- uint8_t result_msg[3];
if (len != 10) { /* TODO: check adrv, rdrv */
- rc = 0x01;
- goto out;
+ return msg_cpm_result(subf, 0x01, res);
}
- drv = msg[0];
+ drv = msg[ADRV];
if ( drv>= MAX_DRIVE) {
- rc = 0x02;
- goto out;
+ return msg_cpm_result(subf, 0x02, res);
}
- 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;
-
+ secs = msg[CNT];
+ addr = ((uint32_t)msg[ADDR+2] << 16) + ((uint16_t)msg[ADDR+1] << 8) + msg[ADDR];
- 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: 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;
-
- /* TODO: check bank boundary crossing */
- /*
- if (addr + BLOCK_SIZE > MAX_MEMORY)
- ... = MAX_MEMORY - addr;
- */
-
+ 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);
- if (!res) {
- unsigned int br;
+ 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 {
- z80_read_block(disk_buffer, addr, BLOCK_SIZE);
+ 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);
- if (!res)
- res = f_sync(&drv_table[drv].fd);
}
+ 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) {
+ if (res == FR_OK && br == BLOCK_SIZE) {
if (!(z80_bus_cmd(Request) & ZST_ACQUIRED)) {
buserr = 1;
+ break;
} else {
- z80_write_block(disk_buffer, addr, br);
+ 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("## f_read res: %d, bytes rd/wr: %u\n", res, br);
+ 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;
}
-out:
- if (buserr) {
- debug("Bus timeout\n");
- rc = 0x03;
+ if (dowrite && !res) {
+// res = f_sync(&drv_table[drv].fd);
+ drv_table[drv].dirty = true;
+ 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) {
+ debug_cpmsd("Bus timeout\n");
+ 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},
{ 0xff, /* end mark */
0, 0,
0},
{
handle_msg_handling = bg_register(msg_handling, 0);
+ handle_cpm_drv_to = bg_register(cpm_drv_to, 0);
}
void restart_z180_serv(void)
projects / z180-stamp.git / blobdiff