tor2ee.c

This a SOFTWARE pbx DRIVER

	word a,r;
	int tries;
	int retry=0;

attempt_retry:
	if (retry > 10) {
		fprintf(stderr, "Maximum retries exceeded reading position %04x\n", addr);
		exit(1);
	}
	/* Load the value to be written */
	pci_write_long(dev, PLX_PCI_VPD_DATA, val);
	/* Be sure we only execute a write */
	a = addr | 0x8000;
	pci_write_word(dev, PLX_PCI_VPD_ADDR, a);
	tries = 0;
	/* Wait for write to be validated */
	for(;;) {
		r = pci_read_word(dev, PLX_PCI_VPD_ADDR);

		/* Wait a bit if it's not yet written */
		if (r & 0x8000) {
			tries++;
			if (tries > 10) {
				retry++;
				goto attempt_retry;
			}
			usleep(1);
		} else 
			break;
	} 
	return 0;
}

static int read_pci_eeprom(struct pci_dev *dev, struct pci_eeprom *ee)
{
	int x;
	u_int32_t v, *tmp;
	printf("Reading from EEPROM..");
	fflush(stdout);
	tmp = (u_int32_t *)(ee->data);
	if (manual) {
		for (x=0;x<sizeof(ee->data)/2;x++) {
			ee->data[x] = plx_read_reg(x);
			printf(".");
			fflush(stdout);
		}
	} else {
		for (x=0;x<sizeof(ee->data)/4;x++) {
			v = read_eeprom_value(dev, x << 2);
			ee->data[x * 2] = (v & 0xFFFF0000) >> 16;
			ee->data[x * 2 + 1] = v & 0xFFFF;
			printf(".");
			fflush(stdout);
		}
	}
	printf("Done\n");
	return 0;
}

static int write_pci_eeprom(struct pci_dev *dev, struct pci_eeprom *ee)
{
	int x;
	u_int32_t v, *tmp;
	int writeboundary;

	writeboundary = ((word *)memw)[PLX_LOC_WP_BOUNDARY/2];

	printf("Original Writeprotect boundary: %04x\n", writeboundary);
	/* Turn off write protect */
	((word *)memw)[PLX_LOC_WP_BOUNDARY/2] = 0;
	printf("Writing to EEPROM..");
	fflush(stdout);
	if (manual) {
		/* Enable writing */
		plx_write_en();

		/* Write values */
		for (x=sizeof(ee->data)/2-1;x>=0;x--) {
			plx_write_reg(x, (int)ee->data[x]);
			printf(".");
			fflush(stdout);
		}
	} else {
		tmp = (u_int32_t *)(ee->data);
		for (x=sizeof(ee->data)/4-1;x>=0;x--) {
			v = (ee->data[x * 2] << 16) | ee->data[x * 2 + 1];
			write_eeprom_value(dev, x << 2, v);
			printf(".");
			fflush(stdout);
		}
	}
	printf("Done\n");
	/* Restore write protect */
	((word *)memw)[PLX_LOC_WP_BOUNDARY/2] = writeboundary;
	return 0;
}

static int reset_pci_eeprom(struct pci_dev *dev)
{
	int writeboundary;

	writeboundary = ((word *)memw)[PLX_LOC_WP_BOUNDARY/2];

	printf("Original Writeprotect boundary: %04x\n", writeboundary);
	/* Turn off write protect */
	((word *)memw)[PLX_LOC_WP_BOUNDARY/2] = 0;
	printf("Resetting EEPROM..");
	fflush(stdout);
	/* Enable writing */
	plx_write_en();
	plx_write_all(0xffff);
	printf("Done\n");
	/* Restore write protect */
	((word *)memw)[PLX_LOC_WP_BOUNDARY/2] = writeboundary;
	return 0;
}

#if 0
static void plx_reset(void)
{
	unsigned short tmp;
	tmp = ((word *)memw)[0x50/2];
	printf("CNTRL: %04x\n", tmp);

	tmp |= 0x4000;
	printf("Writing: %04x\n", tmp);
	tmp = ((word *)memw)[0x50/2];
	printf("Readback: %04x\n", tmp);

	sleep(1);

	tmp = ((word *)memw)[0x50/2];
	printf("CNTRL: %04x\n", tmp);

	tmp &= ~0x4000;
	((word *)memw)[0x50/2] = tmp;
	tmp = ((word *)memw)[0x50/2];
	printf("CNTRL: %04x\n", tmp);

}
#endif

static void plx_manread(void)
{
	int x;
	unsigned short reg;

#if 0
	read_cntrl();
	printf("Cntrl is %02x\n", cntrl);
	cntrl &= ~0xf0ff;
	printf("Clearing all signals\n");
	write_cntrl();
	fgetc(stdin);
	printf("Setting CS\n");
	cntrl |= BIT_EE_CS;
	write_cntrl();
	read_cntrl();
	printf("New read: %04x\n", cntrl);
	fgetc(stdin);
	printf("Setting CLK\n");
	cntrl &= ~BIT_EE_CS;
	cntrl |= BIT_EE_CLK;
	write_cntrl();
	fgetc(stdin);
	printf("Setting WR\n");
	cntrl &= ~BIT_EE_CLK;
	cntrl |= BIT_EE_WR;
	write_cntrl();
	fgetc(stdin);
	cntrl &= ~BIT_EE_WR;
	write_cntrl();
#endif

	for (x=0;x<NUM_REGS;x++) {
		reg = plx_read_reg(x);
		printf("0x%02x: %04x\n", x, reg);
	}
}

static void dump_pci_eeprom(struct pci_eeprom *ee)
{
	int x;
	for (x=0;x<NUM_EEREGS;x++) 
		printf("%60s(%04x): 0x%04x\n", eeregs[x].name, eeregs[x].pos, ee->data[eeregs[x].pos/2]);
}

static int read_eeprom_file(char *filename, struct pci_eeprom *ee)
{
	int res,len;
	int fd;
	len = sizeof(*ee);
	fd = open(filename, O_RDONLY);
	if (fd < 0) {
		fprintf(stderr, "Unable to open %s for input\n", filename);
		return -1;
	}
	printf("Reading from file '%s'....", filename);
	fflush(stdout);
	res = read(fd, (char *)ee, len);
	close(fd);
	if (res != len) {
		printf("Failed!\n");
		if (res < 0) {
			fprintf(stderr, "Failed to read from file: %s\n", strerror(errno));
		} else {
			fprintf(stderr, "Only read %d of %d bytes: %s\n", res, len, strerror(errno));
		}
		return -1;
	}
	if (ee->magic != htonl(EEPROM_MAGIC)) {
		printf("Failed!\n");
		fprintf(stderr, "File '%s' does not appear to be a Tormenta2 EEPROM file\n",
			filename);
		return -1;
	}
	if (ee->crc16 != htons(calc_crc16((char *)ee, sizeof(*ee) - 2))) {
		printf("Failed!\n");
		fprintf(stderr, "File '%s' has improper checksum\n", filename);
		return -1;
	}
	printf("Done.\n");
	printf("Read Revision '%s' from file '%s'\n", ee->revision, filename);
	return 0;
}

static int write_eeprom_file(char *filename, char *revision, struct pci_eeprom *ee)
{
	int res;
	int len;

	int fd;
	fd = open(filename, O_CREAT | O_TRUNC | O_WRONLY, 0666);
	if (fd < 0) {
		fprintf(stderr, "Unable to open %s for output\n", filename);
		return -1;
	}
	/* Record magic */
	ee->magic = htonl(EEPROM_MAGIC);

	/* Store revision number */
	memset(ee->revision, 0, sizeof(ee->revision));
	strncpy(ee->revision, revision, sizeof(ee->revision));

	/* Calculate FCS on revision and data */
	ee->crc16 = htons(calc_crc16((char *)ee, sizeof(*ee) - 2));

	len = sizeof(*ee);
	printf("Writing Revision '%s' to file '%s'....",
	       ee->revision, filename);
	fflush(stdout);
	res = write(fd, (char *)ee, len);
	close(fd);
	if (res != len) {
		printf("Failed!\n");
		if (res < 0) {
			fprintf(stderr, "Failed to write to file: %s\n", strerror(errno));
		} else {
			fprintf(stderr, "Only wrote %d of %d bytes: %s\n", res, len, strerror(errno));
		}
		return -1;
	}
	printf("Done.\n");
	return 0;
}

static int openmem(off_t offset, size_t len, int inport)
{
	if (iopl(3)) {
		fprintf(stderr, "Unable to set I/O Permissions: %s\n", strerror(errno));
		return -1;
	}
	if (memfd > -1) {
		fprintf(stderr, "Huh?  Memory already exists?\n");
		return 0;
	}
	memfd = open("/dev/mem", O_RDWR);
	if (memfd < 0) {
		fprintf(stderr, "Unable to open /dev/mem: %s\n", strerror(errno));
		return -1;
	}
	memw = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_SHARED, memfd, offset);
	if (memw == MAP_FAILED) {
		fprintf(stderr, "Memory map failed: %s\n", strerror(errno));
		close(memfd);
		memfd = -1;
		return -1;
	}
	memlen = len;
	port = inport & PCI_ADDR_IO_MASK;
	return 0;
}

static char *makerev(void)
{
	static char rev[32];
	time_t t;
	struct tm *tm;
	t = time(NULL);
	tm = localtime(&t);
	strftime(rev, sizeof(rev), "Rev[%d/%m/%Y][%T]", tm);
	return rev;
}

static void closemem(void)
{
	if (memfd > -1) {
		munmap(memw, memlen);
		close(memfd);
	}
	memfd = -1;
	if (pci)
		pci_cleanup(pci);
}

int detect_tormenta2(int index)
{
	/* Detect presense of Tormenta 2 card or return -1. 
	   Sets up base addresses, etc as necessary as well. */
	int which=0;
	char *variant;
	pci = pci_alloc();
	pci_init(pci);
	pci_scan_bus(pci);
	dev = pci->devices;
	while(dev) {
#if 0
		printf("[%d:%d:%d] VendorID: %04x DeviceID: %04x\n", 
		       dev->bus, dev->dev, dev->func, dev->vendor_id, 
		       dev->device_id);
#endif
		if (tor2_pci_match(dev->vendor_id, dev->device_id, &variant)) 
			if (index == which++)
				break;
		dev = dev->next;
	}
	if (!dev) {
		if (which) 
			fprintf(stderr, "Only %d Tormenta2 card(s) found\n", which);
		else
			fprintf(stderr, "No Tormenta2 card found in system\n");
		return -1;
	}
	printf("Tormenta2 Card (%s) Found!\n"
	       "Vendor ID: %04x Device ID: %04x\n"
	       "PLX Control Base Address: 0x%08lx [0x%04lx window]\n"
	       "PLX Control I/O Space: 0x%lx\n",
	       variant,
		dev->vendor_id, dev->device_id,
	        dev->base_addr[0], dev->size[0], 
	        dev->base_addr[1]);
	if (!dev->base_addr[0] || !dev->size[0]) {
		fprintf(stderr, "Invalid base address info\n");
		return -1;
	}
	if (openmem(dev->base_addr[0], dev->size[0], dev->base_addr[1])) {
		fprintf(stderr, "Unable to open memory\n");
		return -1;
	}
	printf("Mapped registers at %p\n", memw);
	return 0;
}

void usage(int exitstatus)
{
	fprintf(stderr, 
"tor2ee -- Tormenta 2 EEPROM controller\n"
"Usage: tor2ee command [args...]\n"
"       tor2ee detect\n"
"              -- Detect presense of Tormenta 2 card\n"
"       tor2ee [man]save <filename> [revision]\n"
"              -- Read contents of eeprom and write to file\n"
"	tor2ee reset\n"
"              -- Reset the PLX EEPROM\n"
"	tor2ee manread\n"
"	       -- Manually read registers\n"
"       tor2ee [man]load <filename>\n"
"              -- Write EEPROM from contents of file\n"
"       tor2ee modify <filename> [hex offset] [hex value]\n"
"              -- Change a specific offset and value in a given filename\n"
"       tor2ee verify <filename>\n"
"              -- Verify integrity of EEPROM file\n"
"       tor2ee compare <filename>\n"
"              -- Compare EEPROM file to current contents\n"
"       tor2ee dump [filename]\n"
"              -- Dump current EEPROM contents or filename if specified\n");
	exit(exitstatus);
}

#define MODE_DETECT	0
#define MODE_DUMP	1
#define MODE_SAVE	2
#define MODE_MODIFY	3
#define MODE_LOAD	4
#define MODE_RESET	5
#define MODE_MANREAD	6

static void modify(struct pci_eeprom *ee, int reg, int val)
{
	int x;
	char *regn = "<Unknown>";
	for (x=0;x<NUM_EEREGS;x++) 
		if (eeregs[x].pos == reg)
			regn = eeregs[x].name;
	ee->data[reg/2] = val;
	printf("Setting %s to %04x\n", regn, val);
}

int main(int argc, char *argv[])
{
	struct pci_eeprom ee;
	int mode;
	int reg;
	int val;
	char tmp[32];
	char *readfile = NULL;
	char *writefile = NULL;
	char *revision = NULL;
	if (argc < 2) {
		usage(1);
	}
	if (!strcasecmp(argv[1], "dump")) {
		mode = MODE_DUMP;
		if (argc > 2)
			readfile = argv[2];
	} else if (!strcasecmp(argv[1], "save") ||
		   !strcasecmp(argv[1], "mansave")) {
		if (argc < 3)
			usage(1);
		writefile = argv[2];
		if (argc > 3)
			revision = argv[3];
		else
			revision = makerev();
		mode = MODE_SAVE;
		if (!strcasecmp(argv[1], "mansave"))
			manual = 1;
	} else if (!strcasecmp(argv[1], "detect")) {
		mode = MODE_DETECT;
	} else if (!strcasecmp(argv[1], "load") ||
		   !strcasecmp(argv[1], "manload")) {
		if (argc < 3)
			usage(1);
		readfile = argv[2];
		if (!strcasecmp(argv[1], "manload"))
			manual = 1;
		mode = MODE_LOAD;
	} else if (!strcasecmp(argv[1], "reset"))  {
		mode = MODE_RESET;
	} else if (!strcasecmp(argv[1], "manread")) {
		mode = MODE_MANREAD;
	} else if (!strcasecmp(argv[1], "modify")) {
		if (argc < 5)
			usage(1);
		readfile = writefile = argv[2];
		if ((sscanf(argv[3], "%x", &reg) != 1) ||
		    (reg >= (NUM_REGS) * 2) || (reg < 0)) {
			fprintf(stderr, "Invalid register number: %s\n", argv[3]);
			usage(1);
		}
		if (sscanf(argv[4], "%x", &val) != 1) {
			fprintf(stderr, "Invalid value number: %s\n", argv[3]);
			usage(1);
		}
		mode = MODE_MODIFY;
	} else {
		usage(1);
	}
	if (detect_tormenta2(0)) {
		fprintf(stderr, "Tormenta 2 Not found in System\n");
		closemem();
		exit(1);
	}
	if (mode == MODE_RESET) {
		reset_pci_eeprom(dev);
	}
	if (mode == MODE_MANREAD) {
		plx_manread();
	}
	if ((mode == MODE_DUMP)) {
		if (readfile) {
			if (read_eeprom_file(readfile, &ee)) {
				fprintf(stderr, "Unable to read EEPROM file\n");
				closemem();
				exit(1);
			}
		} else {
			if (read_pci_eeprom(dev, &ee)) {
				fprintf(stderr, "Unable to read existing EEPROM\n");
				closemem();
				exit(1);
			}
		}
		dump_pci_eeprom(&ee);
	}
	if (mode == MODE_SAVE) {
		if (read_pci_eeprom(dev, &ee)) {
			fprintf(stderr, "Unable to read existiing EEPROM\n");
			closemem();
			exit(1);
		}
		if (write_eeprom_file(writefile, revision, &ee)) {
			fprintf(stderr, "Unable to save EEPROM contents\n");
			closemem();
			exit(1);
		}
	}
	if (mode == MODE_MODIFY) {
		if (read_eeprom_file(readfile, &ee)) {
			fprintf(stderr, "Unable to read EEPROM file\n");
			closemem();
			exit(1);
		}
		modify(&ee, reg, val);
		strncpy(tmp, ee.revision, sizeof(tmp));
		if (write_eeprom_file(writefile, tmp, &ee)) {
			fprintf(stderr, "Unable to write EEPROM file\n");
			closemem();
			exit(1);
		}
	}
	if (mode == MODE_LOAD) {
		if (read_eeprom_file(readfile, &ee)) {
			fprintf(stderr, "Unable to read EEPROM file\n");
			closemem();
			exit(1);
		}
		if (write_pci_eeprom(dev, &ee)) {
			fprintf(stderr, "Unable to write to EEPROM\n");
			closemem();
			exit(1);
		}
		printf("EEPROM successfully written.  Please reboot to make changes\n");
		printf("take effect.\n");
	}
	closemem();
	return 0;
}