Refactor paged read/write routines in ft245r.c
This commit is contained in:
Stefan Rueger
parent
66c69a7584
commit
a721e485cb
266
src/ft245r.c
266
src/ft245r.c
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@ -108,9 +108,9 @@ void ft245r_initpgm(PROGRAMMER * pgm) {
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#else
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#define FT245R_CYCLES 2
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#define FT245R_FRAGMENT_SIZE 512
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#define FT245R_CMD_SIZE (4 * 8*FT245R_CYCLES)
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#define FT245R_FRAGMENT_SIZE (8 * FT245R_CMD_SIZE)
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#define REQ_OUTSTANDINGS 10
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//#define USE_INLINE_WRITE_PAGE
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#define FT245R_DEBUG 0
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/*
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@ -992,39 +992,17 @@ static void ft245r_display(PROGRAMMER * pgm, const char * p) {
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pgm_display_generic_mask(pgm, p, SHOW_ALL_PINS);
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}
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static int ft245r_paged_write_gen(PROGRAMMER *pgm, AVRPART *p, AVRMEM *m,
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unsigned int page_size, unsigned int addr,
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unsigned int n_bytes) {
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unsigned long i, pa;
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int rc;
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unsigned int page_size, unsigned int addr, unsigned int n_bytes) {
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for (i=0; i<n_bytes; i++, addr++) {
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rc = avr_write_byte_default(pgm, p, m, addr, m->buf[addr]);
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if (rc != 0) {
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for(int i=0; i < (int) n_bytes; i++, addr++)
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if(avr_write_byte_default(pgm, p, m, addr, m->buf[addr]) != 0)
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return -2;
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return n_bytes;
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}
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if (m->paged) {
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// Can this piece of code ever be activated?? Do AVRs exist that
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// have paged non-flash memories? -- REW
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// XXX Untested code below.
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/*
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* check to see if it is time to flush the page with a page
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* write
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*/
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if (((addr % m->page_size) == m->page_size-1) || (i == n_bytes-1)) {
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pa = addr - (addr % m->page_size);
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rc = avr_write_page(pgm, p, m, pa);
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if (rc != 0) {
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return -2;
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}
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}
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}
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}
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return i;
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}
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static struct ft245r_request {
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int addr;
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@ -1081,179 +1059,173 @@ static int do_request(PROGRAMMER * pgm, AVRMEM *m) {
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return 1;
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}
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static int ft245r_paged_write_flash(PROGRAMMER *pgm, AVRPART *p, AVRMEM *m,
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int page_size, int addr, int n_bytes) {
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unsigned int i,j;
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int addr_save,buf_pos,do_page_write,req_count;
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unsigned char buf[FT245R_FRAGMENT_SIZE+1+128];
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unsigned int page_size, unsigned int addr, unsigned int n_bytes) {
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req_count = 0;
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for (i=0; i<n_bytes; ) {
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addr_save = addr;
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buf_pos = 0;
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do_page_write = 0;
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for (j=0; j< FT245R_FRAGMENT_SIZE/8/FT245R_CYCLES/4; j++) {
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buf_pos += set_data(pgm, buf+buf_pos, (addr & 1)?0x48:0x40 );
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buf_pos += set_data(pgm, buf+buf_pos, (addr >> 9) & 0xff );
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buf_pos += set_data(pgm, buf+buf_pos, (addr >> 1) & 0xff );
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buf_pos += set_data(pgm, buf+buf_pos, m->buf[addr]);
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addr ++;
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i++;
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if ( (m->paged) &&
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(((i % m->page_size) == 0) || (i == n_bytes))) {
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do_page_write = 1;
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break;
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}
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}
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#if defined(USE_INLINE_WRITE_PAGE)
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if (do_page_write) {
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int addr_wk = addr_save - (addr_save % m->page_size);
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/* If this device has a "load extended address" command, issue it. */
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if (m->op[AVR_OP_LOAD_EXT_ADDR]) {
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int i, j, addr_save, buf_pos, req_count, do_page_write;
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unsigned char buf[FT245R_FRAGMENT_SIZE+1];
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unsigned char cmd[4];
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OPCODE *lext = m->op[AVR_OP_LOAD_EXT_ADDR];
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memset(cmd, 0, 4);
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avr_set_bits(lext, cmd);
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avr_set_addr(lext, cmd, addr_wk/2);
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buf_pos += set_data(pgm, buf+buf_pos, cmd[0]);
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buf_pos += set_data(pgm, buf+buf_pos, cmd[1]);
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buf_pos += set_data(pgm, buf+buf_pos, cmd[2]);
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buf_pos += set_data(pgm, buf+buf_pos, cmd[3]);
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if(m->op[AVR_OP_LOADPAGE_LO] == NULL || m->op[AVR_OP_LOADPAGE_HI] == NULL) {
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avrdude_message(MSG_INFO, "AVR_OP_LOADPAGE_HI/LO command not defined for %s\n", p->desc);
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return -1;
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}
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buf_pos += set_data(pgm, buf+buf_pos, 0x4C); /* Issue Page Write */
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buf_pos += set_data(pgm, buf+buf_pos,(addr_wk >> 9) & 0xff);
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buf_pos += set_data(pgm, buf+buf_pos,(addr_wk >> 1) & 0xff);
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buf_pos += set_data(pgm, buf+buf_pos, 0);
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}
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#endif
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do_page_write = req_count = i = j = buf_pos = 0;
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addr_save = addr;
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while(i < (int) n_bytes) {
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int spi = addr&1? AVR_OP_LOADPAGE_HI: AVR_OP_LOADPAGE_LO;
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// put the SPI loadpage command as FT245R_CMD_SIZE bytes into buffer
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memset(cmd, 0, sizeof cmd);
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avr_set_bits(m->op[spi], cmd);
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avr_set_addr(m->op[spi], cmd, addr/2);
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avr_set_input(m->op[spi], cmd, m->buf[addr]);
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for(int k=0; k<sizeof cmd; k++)
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buf_pos += set_data(pgm, buf+buf_pos, cmd[k]);
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i++; j++; addr++;
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if(m->paged && (i%m->page_size == 0 || i >= (int) n_bytes))
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do_page_write = 1;
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// page boundary, finished or buffer exhausted? queue up requests
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if(do_page_write || i >= (int) n_bytes || j >= FT245R_FRAGMENT_SIZE/FT245R_CMD_SIZE) {
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if(i >= n_bytes) {
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ft245r_out = SET_BITS_0(ft245r_out,pgm,PIN_AVR_SCK,0); // sck down
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ft245r_out = SET_BITS_0(ft245r_out, pgm, PIN_AVR_SCK, 0); // SCK down
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buf[buf_pos++] = ft245r_out;
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}
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else {
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/* stretch sequence to allow correct readout, see extract_data() */
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} else {
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// stretch sequence to allow correct readout, see extract_data()
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buf[buf_pos] = buf[buf_pos - 1];
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buf_pos++;
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}
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ft245r_send(pgm, buf, buf_pos);
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put_request(addr_save, buf_pos, 0);
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//ft245r_sync(pgm);
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#if 0
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avrdude_message(MSG_INFO, "send addr 0x%04x bufsize %d [%02x %02x] page_write %d\n",
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addr_save,buf_pos,
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extract_data_out(pgm, buf , (0*4 + 3) ),
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extract_data_out(pgm, buf , (1*4 + 3) ),
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do_page_write);
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#endif
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req_count++;
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if (req_count > REQ_OUTSTANDINGS)
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if(++req_count > REQ_OUTSTANDINGS)
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do_request(pgm, m);
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if(do_page_write) {
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#if defined(USE_INLINE_WRITE_PAGE)
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while(do_request(pgm, m))
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;
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ft245r_usleep(pgm, m->max_write_delay);
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#else
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int addr_wk = addr_save - (addr_save % m->page_size);
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int rc;
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while (do_request(pgm, m))
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;
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rc = avr_write_page(pgm, p, m, addr_wk);
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if (rc != 0) {
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continue;
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if(avr_write_page(pgm, p, m, addr_save - (addr_save % m->page_size)) != 0)
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return -2;
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do_page_write = req_count = 0;
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}
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#endif
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req_count = 0;
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// reset buffer variables
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j = buf_pos = 0;
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addr_save = addr;
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}
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}
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while(do_request(pgm, m))
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;
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return i;
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continue;
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return n_bytes;
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}
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static int ft245r_paged_write(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m,
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unsigned int page_size, unsigned int addr, unsigned int n_bytes) {
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if (strcmp(m->desc, "flash") == 0) {
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if(!n_bytes)
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return 0;
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if(strcmp(m->desc, "flash") == 0)
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return ft245r_paged_write_flash(pgm, p, m, page_size, addr, n_bytes);
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} else if (strcmp(m->desc, "eeprom") == 0) {
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if(strcmp(m->desc, "eeprom") == 0)
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return ft245r_paged_write_gen(pgm, p, m, page_size, addr, n_bytes);
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} else {
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return -2;
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}
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}
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static int ft245r_paged_load_gen(PROGRAMMER *pgm, AVRPART *p, AVRMEM *m,
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unsigned int page_size, unsigned int addr,
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int n_bytes) {
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unsigned char rbyte;
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unsigned long i;
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int rc;
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unsigned int page_size, unsigned int addr, unsigned int n_bytes) {
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for (i=0; i<n_bytes; i++) {
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rc = avr_read_byte_default(pgm, p, m, i+addr, &rbyte);
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if (rc != 0) {
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for(int i=0; i < (int) n_bytes; i++) {
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unsigned char rbyte;
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if(avr_read_byte_default(pgm, p, m, addr+i, &rbyte) != 0)
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return -2;
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m->buf[addr+i] = rbyte;
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}
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m->buf[i+addr] = rbyte;
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}
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return 0;
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}
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static int ft245r_paged_load_flash(PROGRAMMER * pgm, AVRPART * p, AVRMEM * m,
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unsigned int page_size, unsigned int addr,
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unsigned int n_bytes) {
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unsigned long i,j,n;
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int addr_save,buf_pos;
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int req_count = 0;
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unsigned char buf[FT245R_FRAGMENT_SIZE+1];
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for (i=0; i<n_bytes; ) {
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buf_pos = 0;
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static int ft245r_paged_load_flash(PROGRAMMER *pgm, AVRPART *p, AVRMEM *m,
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unsigned int page_size, unsigned int addr, unsigned int n_bytes) {
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int i, j, addr_save, buf_pos, req_count;
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unsigned char buf[FT245R_FRAGMENT_SIZE+1];
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unsigned char cmd[4];
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if(m->op[AVR_OP_READ_LO] == NULL || m->op[AVR_OP_READ_HI] == NULL) {
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avrdude_message(MSG_INFO, "AVR_OP_READ_HI/LO command not defined for %s\n", p->desc);
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return -1;
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}
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req_count = i = j = buf_pos = 0;
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addr_save = addr;
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for (j=0; j< FT245R_FRAGMENT_SIZE/8/FT245R_CYCLES/4; j++) {
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if (i >= n_bytes) break;
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buf_pos += set_data(pgm, buf+buf_pos, (addr & 1)?0x28:0x20 );
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buf_pos += set_data(pgm, buf+buf_pos, (addr >> 9) & 0xff );
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buf_pos += set_data(pgm, buf+buf_pos, (addr >> 1) & 0xff );
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buf_pos += set_data(pgm, buf+buf_pos, 0);
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addr ++;
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i++;
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}
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if (i >= n_bytes) {
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ft245r_out = SET_BITS_0(ft245r_out,pgm,PIN_AVR_SCK,0); // sck down
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while(i < (int) n_bytes) {
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int spi = addr&1? AVR_OP_READ_HI: AVR_OP_READ_LO;
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// put the SPI read command as FT245R_CMD_SIZE bytes into buffer
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memset(cmd, 0, sizeof cmd);
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avr_set_bits(m->op[spi], cmd);
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avr_set_addr(m->op[spi], cmd, addr/2);
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for(int k=0; k<sizeof cmd; k++)
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buf_pos += set_data(pgm, buf+buf_pos, cmd[k]);
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i++; j++; addr++;
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// finished or buffer exhausted? queue up requests
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if(i >= (int) n_bytes || j >= FT245R_FRAGMENT_SIZE/FT245R_CMD_SIZE) {
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if(i >= (int) n_bytes) {
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ft245r_out = SET_BITS_0(ft245r_out, pgm, PIN_AVR_SCK, 0); // SCK down
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buf[buf_pos++] = ft245r_out;
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}
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else {
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/* stretch sequence to allow correct readout, see extract_data() */
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} else {
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// stretch sequence to allow correct readout, see extract_data()
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buf[buf_pos] = buf[buf_pos - 1];
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buf_pos++;
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}
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n = j;
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ft245r_send(pgm, buf, buf_pos);
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put_request(addr_save, buf_pos, n);
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req_count++;
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if (req_count > REQ_OUTSTANDINGS)
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put_request(addr_save, buf_pos, j);
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if(++req_count > REQ_OUTSTANDINGS)
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do_request(pgm, m);
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// reset buffer variables
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j = buf_pos = 0;
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addr_save = addr;
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}
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}
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while(do_request(pgm, m))
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;
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continue;
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return 0;
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}
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static int ft245r_paged_load(PROGRAMMER *pgm, AVRPART *p, AVRMEM *m,
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unsigned int page_size, unsigned int addr,
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unsigned int n_bytes) {
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if (strcmp(m->desc, "flash") == 0) {
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unsigned int page_size, unsigned int addr, unsigned int n_bytes) {
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if(!n_bytes)
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return 0;
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if(strcmp(m->desc, "flash") == 0)
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return ft245r_paged_load_flash(pgm, p, m, page_size, addr, n_bytes);
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} else if (strcmp(m->desc, "eeprom") == 0) {
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if(strcmp(m->desc, "eeprom") == 0)
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return ft245r_paged_load_gen(pgm, p, m, page_size, addr, n_bytes);
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} else {
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return -2;
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}
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}
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void ft245r_initpgm(PROGRAMMER * pgm) {
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strcpy(pgm->type, "ftdi_syncbb");
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