/*************************************************************************
 * (C) 2010 AITNET - Sofia/Bulgaria - <office@aitbg.com>
 *  by Michael Pounov <misho@aitbg.com>
 *
 * $Author: misho $
 * $Id: athctl.c,v 1.5 2017/06/28 15:19:32 misho Exp $
 *
 *************************************************************************
The ELWIX and AITNET software is distributed under the following
terms:

All of the documentation and software included in the ELWIX and AITNET
Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>

Copyright 2004 - 2017
	by Michael Pounov <misho@elwix.org>.  All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in the
   documentation and/or other materials provided with the distribution.
3. All advertising materials mentioning features or use of this software
   must display the following acknowledgement:
This product includes software developed by Michael Pounov <misho@elwix.org>
ELWIX - Embedded LightWeight unIX and its contributors.
4. Neither the name of AITNET nor the names of its contributors
   may be used to endorse or promote products derived from this software
   without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
*/
#include "global.h"
#include "athctl.h"


int Verbose;
extern char compiled[], compiledby[], compilehost[];


static void
Usage()
{
	printf(	"athCtl is tool for Atheros WiFi cards managment \n"
		"=== %s === %s@%s ===\n\n"
		"  Syntax: athctl [options] [[0xMemory_Address] new_value]\n"
		"          athctl [-v] -t [-i <iface_no>]\n"
		"          athctl [-v] -c <timeout> [-i <iface_no>]\n"
		"          athctl [-v] -d <distance> [-i <iface_no>]\n"
		"          athctl [-v] -r <0xoffset> <0xMemory_Address>\n"
		"          athctl [-v] -w <0xoffset> <0xMemory_Address> <uint16_value>\n"
		"          athctl [-v] -s <file> <0xMemory_Address>\n"
		"          athctl [-v] -u <file> <0xMemory_Address>\n"
		"          athctl [-v] -R <0xMemory_Address> [new_regdomain]\n"
		"\n"
		"\t-v\t\tVerbose ...\n"
		"\t-t\t\tGet current Atheros maximum range in meters\n"
		"\t-i <iface_no>\tApply to this Atheros interface number (like ath0 == 0)\n"
		"\t-d <distance>\tMode distance, meters to target\n"
		"\t-c <timeout>\tMode distance, mS timeouts correction\n"
		"\t-R\t\tRead or Write EEPROM Regulatory domain\n"
		"\t-s <file>\tDump EEPROM to file\n"
		"\t-u <file>\tUpdate EEPROM from file\n"
		"\t-r <offset>\tRead EEPROM word from PCI mapped memory address\n"
		"\t-w <offset>\tWrite EEPROM word to PCI mapped memory address\n"
		"\n", compiled, compiledby, compilehost);
}

static int
calcDistance(int ifid, int dist, int cor)
{
	int slottime[2], timeout[2];
	size_t len;
	char szStr[STRSIZ];

	slottime[0] = 9 + (dist / 300) + (dist % 300 ? 1 : 0);
	timeout[0] = slottime[0] * 2 + 3 + cor;
	VERB(3) printf("Info:: slottime=%d timeout=%d\n", slottime[0], timeout[0]);

	memset(szStr, 0, STRSIZ);
	snprintf(szStr, STRSIZ, SC_SLOTTIME, ifid);
	if (sysctlbyname(szStr, NULL, &len, NULL, 0) == -1) {
		printf("Error:: get sysctl %s #%d - %s\n", szStr, errno, strerror(errno));
		return -1;
	} else if (sysctlbyname(szStr, &slottime[1], &len, NULL, 0) == -1) {
		printf("Error:: get sysctl %s #%d - %s\n", szStr, errno, strerror(errno));
		return -1;
	} else if (sysctlbyname(szStr, NULL, NULL, &slottime[0], sizeof slottime[0]) == -1) {
		printf("Error:: set sysctl %s from %d #%d - %s\n", szStr, slottime[1], 
				errno, strerror(errno));
		return -1;
	} else
		VERB(1) printf("Info:: set slottime(%zd) from %d to %d ... OK!\n", len, 
				slottime[1], slottime[0]);

	memset(szStr, 0, STRSIZ);
	snprintf(szStr, STRSIZ, SC_ACKTIMEOUT, ifid);
	if (sysctlbyname(szStr, NULL, &len, NULL, 0) == -1) {
		printf("Error:: get sysctl %s #%d - %s\n", szStr, errno, strerror(errno));
		return -1;
	} else if (sysctlbyname(szStr, &timeout[1], &len, NULL, 0) == -1) {
		printf("Error:: get sysctl %s #%d - %s\n", szStr, errno, strerror(errno));
		return -1;
	} else if (sysctlbyname(szStr, NULL, NULL, &timeout[0], sizeof timeout[0]) == -1) {
		printf("Error:: set sysctl %s from %d #%d - %s\n", szStr, timeout[1], 
				errno, strerror(errno));
		return -1;
	} else
		VERB(1) printf("Info:: set acktimeout(%zd) from %d to %d ... OK!\n", len, 
				timeout[1], timeout[0]);

	memset(szStr, 0, STRSIZ);
	snprintf(szStr, STRSIZ, SC_CTSTIMEOUT, ifid);
	if (sysctlbyname(szStr, NULL, &len, NULL, 0) == -1) {
		printf("Error:: get sysctl %s #%d - %s\n", szStr, errno, strerror(errno));
		return -1;
	} else if (sysctlbyname(szStr, &timeout[1], &len, NULL, 0) == -1) {
		printf("Error:: get sysctl %s #%d - %s\n", szStr, errno, strerror(errno));
		return -1;
	} else if (sysctlbyname(szStr, NULL, NULL, &timeout[0], sizeof timeout[0]) == -1) {
		printf("Error:: set sysctl %s from %d #%d - %s\n", szStr, timeout[1], 
				errno, strerror(errno));
		return -1;
	} else
		VERB(1) printf("Info:: set ctstimeout(%zd) from %d to %d ... OK!\n", len, 
				timeout[1], timeout[0]);

	return timeout[0];
}


static int
calcTimeout(int ifid, int cor)
{
	int slottime[2], timeout[2];
	size_t len;
	char szStr[STRSIZ];

	memset(szStr, 0, STRSIZ);
	snprintf(szStr, STRSIZ, SC_SLOTTIME, ifid);
	if (sysctlbyname(szStr, NULL, &len, NULL, 0) == -1) {
		printf("Error:: get sysctl %s #%d - %s\n", szStr, errno, strerror(errno));
		return -1;
	} else if (sysctlbyname(szStr, &slottime[1], &len, NULL, 0) == -1) {
		printf("Error:: get sysctl %s #%d - %s\n", szStr, errno, strerror(errno));
		return -1;
	} else
		VERB(1) printf("Info:: get slottime(%zd) %d ... OK!\n", len, slottime[1]);

	memset(szStr, 0, STRSIZ);
	snprintf(szStr, STRSIZ, SC_ACKTIMEOUT, ifid);
	if (sysctlbyname(szStr, NULL, &len, NULL, 0) == -1) {
		printf("Error:: get sysctl %s #%d - %s\n", szStr, errno, strerror(errno));
		return -1;
	} else if (sysctlbyname(szStr, &timeout[1], &len, NULL, 0) == -1) {
		printf("Error:: get sysctl %s #%d - %s\n", szStr, errno, strerror(errno));
		return -1;
	} else
		VERB(1) printf("Info:: get acktimeout(%zd) %d ... OK!\n", len, timeout[1]);

	slottime[0] = (timeout[1] - 3 - cor) / 2;
	VERB(3) printf("Info:: calculated slottime=%d\n", slottime[0]);
	timeout[0] = (slottime[0] - 10) * 300;
	VERB(3) printf("Info:: calculated timeout=%d\n", timeout[0]);

	return timeout[0];
}


static inline void *
devOpen(u_long baseaddr)
{
	int fd;
	void *basemem;

	fd = open("/dev/mem", O_RDWR);
	if (fd == -1) {
		printf("Error:: open device #%d - %s\n", errno, strerror(errno));
		return NULL;
	}
	basemem = mmap(NULL, ATH_PCI_MEM_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED, fd, baseaddr);
	if (basemem == MAP_FAILED) {
		printf("Error:: map device #%d - %s\n", errno, strerror(errno));
		close(fd);
		return NULL;
	} else
		close(fd);

	return basemem;
}

static inline void
devClose(void *basemem)
{
	if (basemem)
		munmap(basemem, ATH_PCI_MEM_SIZE);
}

static inline int
readWord(u_char *mem, u_long offset)
{
	register int timeout = ATH_ACCESS_TIMEOUT;
	u_long stat;

	VERB(9) printf("Reading EEPROM memory %p+%lx ...\n", mem, offset);
	ATH_OUT(mem, AR5211_EEPROM_CONF, 0);
	usleep(ATH_ACCESS_WAIT);
 	/* enable eeprom access */
	ATH_OUT(mem, AR5211_EEPROM_COMD, ATH_IN(mem, AR5211_EEPROM_COMD) | AR5211_EEPROM_COMD_RESET);
	usleep(ATH_ACCESS_WAIT);
 	/* set address */
	ATH_OUT(mem, AR5211_EEPROM_ADDR, offset);
	usleep(ATH_ACCESS_WAIT);
 	/* enable eeprom read access */
	ATH_OUT(mem, AR5211_EEPROM_COMD, ATH_IN(mem, AR5211_EEPROM_COMD) | AR5211_EEPROM_COMD_READ);
	usleep(ATH_ACCESS_WAIT);

	while (timeout--) {
		usleep(1);
		stat = ATH_IN(mem, AR5211_EEPROM_STATUS);
		if (stat & AR5211_EEPROM_STAT_RDDONE) {
			if (stat & AR5211_EEPROM_STAT_RDERR) {
				printf("Error:: EEPROM read failed!\n");
				return -1;
			}

			stat = ATH_IN(mem, AR5211_EEPROM_DATA);
			return (stat & 0x0000ffff) << 16;
		}
	}

	printf("Error:: EEPROM read timeout!\n");
	return -1;
}

static inline int
writeWord(u_char *mem, u_long offset, u_short newval)
{
	register int i = ATH_WRITE_RETRY, timeout;
	u_long pcicfg, stat;
	int chk;

	VERB(9) printf("Writing EEPROM memory %p+%lx ...\n", mem, offset);
 	/* enable pci write access */
	pcicfg = ATH_IN(mem, AR5K_PCICFG);
	ATH_OUT(mem, AR5K_PCICFG, (pcicfg & ~AR5K_PCICFG_SPWR_DN));
	usleep(ATH_ACCESS_WAITDOWN);
	ATH_OUT(mem, AR5K_PCICFG, pcicfg | AR5K_PCICFG_EEAE /* | 0x2 */);
	usleep(ATH_ACCESS_WAITPCI);
	ATH_OUT(mem, AR5211_EEPROM_STATUS, 0);
	usleep(ATH_ACCESS_WAITPCI);
	/* ATH_OUT(mem, AR5211_EEPROM_CONF, 1); */
	ATH_OUT(mem, AR5211_EEPROM_CONF, 0);

	do {
 		/* enable eeprom write access */
		ATH_OUT(mem, AR5211_EEPROM_COMD, AR5211_EEPROM_COMD_RESET);
		usleep(ATH_ACCESS_WAITDOWN);
		ATH_OUT(mem, AR5211_EEPROM_DATA, newval);
		usleep(ATH_ACCESS_WAIT);
		ATH_OUT(mem, AR5211_EEPROM_ADDR, offset);
		usleep(ATH_ACCESS_WAIT);
		ATH_OUT(mem, AR5211_EEPROM_COMD, AR5211_EEPROM_COMD_WRITE);
		usleep(ATH_ACCESS_WAIT);

		for (timeout = ATH_ACCESS_TIMEOUT; timeout; timeout--) {
			stat = ATH_IN(mem, AR5211_EEPROM_STATUS);
			if (stat & 0xc) {
				if (stat & AR5211_EEPROM_STAT_WRERR) {
					printf("Error:: EEPROM write failed!\n");
					return -1;
				}

				ATH_OUT(mem, AR5211_EEPROM_STATUS, 0);
				usleep(ATH_ACCESS_WAIT * 2);
				break;
			}
			usleep(ATH_ACCESS_WAIT * 2);
		}

		chk = readWord(mem, offset);
		if (chk == (u_short) -1)
			return -1;
		if ((u_short) (chk >> 16) == newval)
			return chk;
		else
			VERB(1) printf("Write & Read don`t match 0x%04X != 0x%04X\n", newval, (u_short) (chk >> 16));
		if (i)
			printf("Warning:: Retrying EEPROM write ...\n");
	} while (--i);

	printf("Error:: EEPROM write timeout!\n");
	return -1;
}

static int
dumpFile(const char *csName, u_char *mem)
{
	register u_long i;
	u_short d1, d2;
	u_char eeprom[ATH_EEPROM_SIZE] = { 0 };
	int f, data;

	VERB(2) printf("Reading EEPROM memory %p ::\n", mem);
	for (i = 0; i < ATH_EEPROM_SIZE / 2; i++) {
		if (!(i % 0x40)) {
			if (i)
				printf("]\n");
			printf("0x%04lX [", i * 2);
		}

		if ((data = readWord(mem, i)) == -1)
			return -1;
		else {
			d1 = ((u_short)(data >> 16)) / 0x100;
			d2 = ((u_short)(data >> 16)) % 0x100;

			VERB(5) printf( "Current value 0x%04X on position 0x%04lX will change 0x%02X 0x%02X\n", 
					(u_short) (data >> 16), i, d1, d2);
		}

		eeprom[i * 2] = d2;
		eeprom[i * 2 + 1] = d1;

		printf(".");
		usleep(ATH_ACCESS_WAITDOWN);
	}
	printf("]\n");

	VERB(2) printf("Saving EEPROM to file %s ... ", csName);
	f = open(csName, O_WRONLY | O_CREAT | O_TRUNC, 0644);
	if (f == -1) {
		printf("Failed!\nError:: in create file %s #%d - %s\n", csName, 
				errno, strerror(errno));
		return 0;
	}
	if (write(f, eeprom, ATH_EEPROM_SIZE) == -1) {
		printf("Failed!\nError:: in write to file %s #%d - %s\n", csName, 
				errno, strerror(errno));
		close(f);
		return 0;
	}
	close(f);
	printf("OK!\n");
	return 1;
}

static int
flashFile(const char *csName, u_char *mem)
{
	register u_long i;
	u_short d1;
	u_char eeprom[ATH_EEPROM_SIZE] = { 0 };
	int f, data;

	VERB(2) printf("Reading EEPROM from file %s ... ", csName);
	f = open(csName, O_RDONLY);
	if (f == -1) {
		printf("Failed!\nError:: in open file %s #%d - %s\n", csName, 
				errno, strerror(errno));
		return 0;
	}
	if (read(f, eeprom, ATH_EEPROM_SIZE) != ATH_EEPROM_SIZE) {
		printf("Failed!\nError:: failed load image from file %s\n", csName);
		close(f);
		return 0;
	}
	close(f);
	VERB(2) printf("OK!\n");

	VERB(2) printf("Writing EEPROM memory %p ::\n", mem);
	for (i = 0; i < ATH_EEPROM_SIZE / 2; i++) {
		if (!(i % 0x40)) {
			if (i)
				printf("]\n");
			printf("0x%04lX [", i * 2);
		}

		if ((data = readWord(mem, i)) == -1)
			return -1;
		else
			d1 = eeprom[i * 2 + 1] * 0x100 + eeprom[i * 2];
		VERB(5) printf("eeprom_data=0x%04X read_d1=0x%04X\n", (u_char) (data >> 16), d1);

		if (((u_short) (data >> 16)) == d1)
			printf(".");
		else {

			if (writeWord(mem, i, d1) < 1)
				printf("!");
			else
				printf("x");
		}

		usleep(ATH_ACCESS_WAITDOWN);
	}
	printf("]\n");

	return 0;
}

static int
regDomain(u_char *mem, u_short newval)
{
	int ret, data;

	if ((data = readWord(mem, ATH_OFFSET_REGDOMAIN)) == -1)
		return -1;

	printf("Current value 0x%04X ", (u_short) (data >> 16));
	if (newval != (u_short) -1) {
		printf("will change to 0x%04X\n", newval);

		if ((ret = writeWord(mem, ATH_OFFSET_REGDOMAIN, newval)) == -1)
			return -1;

		printf("Updated regulatory domain is 0x%04X\n", (u_short) (ret >> 16));
	} else
		printf("\nCurrent regulatory domain is 0x%04X\n", (u_short) (data >> 16));

	return 0;
}

// ----------------------------------------------------

int
main(int argc, char **argv)
{
	char ch, szName[MAXPATHLEN] = { 0 }, mode = 0;
	int ret = 0, dist = 0, cor = 0, ino = 0;
	u_long offset = 0, baseaddr = (u_long) -1;
	u_short newval = 0;
	void *basemem = NULL;

	while ((ch = getopt(argc, argv, "hvRtr:w:i:d:c:u:s:")) != -1)
		switch (ch) {
			case 'v':
				Verbose++;
				break;
			case 't':
				mode |= 2;
				break;
			case 'i':
				ino = strtol(optarg, NULL, 0);
				if (ino < 0) {
					printf("Error:: in interface number %d\n", ino);
					return 1;
				}
				break;
			case 'd':
				mode |= 1;
				dist = strtol(optarg, NULL, 0);
				if (dist < 1) {
					printf("Error:: in distance meters %d\n", dist);
					return 1;
				}
				break;
			case 'c':
				mode |= 1;
				cor = strtol(optarg, NULL, 0);
				break;
			case 's':
				mode = 0x10;
				strlcpy(szName, optarg, MAXPATHLEN);
				break;
			case 'u':
				mode = 0x20;
				strlcpy(szName, optarg, MAXPATHLEN);
				break;
			case 'R':
				mode = 0x40;
				break;
			case 'r':
				mode = 4;
				offset = strtoul(optarg, NULL, 0);
				break;
			case 'w':
				mode = 8;
				offset = strtoul(optarg, NULL, 0);
				break;
			case 'h':
			default:
				Usage();
				return 1;
		}
	argc -= optind;
	argv += optind;
	if (argc && *argv)
		baseaddr = strtoul(*argv, NULL, 0);
	if (!mode) {
		printf("Error:: not selected mode for operation ...\n");
		return 1;
	}
	if (mode > 3 && baseaddr == (u_long) -1) {
		printf("Error:: in this mode for operation, must give memory mapped address ...\n");
		return 1;
	}
	if (mode & 8) {
		if (!argv[1]) {
			printf("Error:: in write word mode, must give memory mapped address and new value ...\n");
			return 1;
		} else
			newval = (u_short) strtoul(argv[1], NULL, 0);
	}
	if (mode & 0x40) {
		if (argv[1])
			newval = (u_short) strtoul(argv[1], NULL, 0);
		else
			newval = (u_short) -1;
	}

	if (mode & 1)
		if ((ret = calcDistance(ino, dist, cor)) < 1)
			return 2;
	if (mode & 2) {
		if ((ret = calcTimeout(ino, cor)) < 1)
			return 2;
		else {
			VERB(1)
				printf("Maximum approximate distance ~%d meters\n", ret);
			else
				printf("~%d\n", ret);
		}
	}

	if (mode & 4) {
		if (!(basemem = devOpen(baseaddr)))
			return 2;
		if ((ret = readWord(basemem, offset)) == -1) {
			devClose(basemem);
			return 3;
		} else
			printf("EEPROM readed value 0x%04X\n", (u_short) (ret >> 16));
		devClose(basemem);
	}
	if (mode & 8) {
		if (!(basemem = devOpen(baseaddr)))
			return 2;
		if ((ret = writeWord(basemem, offset, newval)) == -1) {
			devClose(basemem);
			return 3;
		} else
			printf("EEPROM writed value 0x%04X\n", (u_short) (ret >> 16));
		devClose(basemem);
	}

	if (mode & 0x10) {
		if (!(basemem = devOpen(baseaddr)))
			return 2;
		if ((ret = dumpFile(szName, basemem)) < 1) {
			devClose(basemem);
			return 3;
		}
		devClose(basemem);
	}
	if (mode & 0x20) {
		if (!(basemem = devOpen(baseaddr)))
			return 2;
		if ((ret = flashFile(szName, basemem)) < 1) {
			devClose(basemem);
			return 3;
		}
		devClose(basemem);
	}

	if (mode & 0x40) {
		if (!(basemem = devOpen(baseaddr)))
			return 2;
		if ((ret = regDomain(basemem, newval)) < 1) {
			devClose(basemem);
			return 3;
		}
		devClose(basemem);
	}

	return 0;
}