selphy_print/backend_mitsu70x.c

/*
 *   Mitsubishi CP-D70/D707 Photo Printer CUPS backend -- libusb-1.0 version
 *
 *   (c) 2013-2022 Solomon Peachy <pizza@shaftnet.org>
 *
 *   The latest version of this program can be found at:
 *
 *     https://git.shaftnet.org/cgit/selphy_print.git
 *
 *   This program is free software; you can redistribute it and/or modify it
 *   under the terms of the GNU General Public License as published by the Free
 *   Software Foundation; either version 3 of the License, or (at your option)
 *   any later version.
 *
 *   This program is distributed in the hope that it will be useful, but
 *   WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 *   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 *   for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, see <https://www.gnu.org/licenses/>.
 *
 *   SPDX-License-Identifier: GPL-3.0+
 *
 */

#define BACKEND mitsu70x_backend

#include "backend_common.h"
#include "backend_mitsu.h"

/* Width of the laminate data file */
#define LAMINATE_STRIDE 1864

/* Max size of data chunk sent over */
#define CHUNK_LEN (256*1024)

/* Private data structure */
struct mitsu70x_printjob {
	struct dyesub_job_common common;

	uint8_t *databuf;
	uint32_t datalen;

	uint8_t *spoolbuf;
	int spoolbuflen;

	uint16_t rows;
	uint16_t cols;
	uint32_t planelen;
	uint32_t matte;
	int raw_format;

	int decks_exact[2];	 /* Media is exact match */
	int decks_ok[2];         /* Media can be used */

	/* These are used only for the image processing */
	int sharpen; /* ie mhdr.sharpen - 1 */
	int reverse;

	const char *laminatefname;
	const char *lutfname;
	const char *cpcfname;
	const char *ecpcfname;
};

struct mitsu70x_ctx {
	struct dyesub_connection *conn;

	int is_s;

	uint16_t jobid;

	struct marker marker[2];
	uint8_t medias[2];
	uint8_t media_subtypes[2];

	uint16_t last_l;
	uint16_t last_u;
	int num_decks;

	char serno[7]; /* 6+null */
	char fwver[7]; /* 6+null */

	struct mitsu_lib lib;

	const char *last_cpcfname;
	const char *last_ecpcfname;

	struct BandImage output;
};

/* Printer data structures */
struct mitsu70x_jobstatus {
	uint8_t  hdr[4]; /* E4 56 31 30 */
	uint16_t jobid;  /* BE */
	uint16_t mecha_no; /* BE */
	uint8_t  job_status[4];
	uint8_t  memory;
	uint8_t  power;
	uint8_t  mecha_status[2];
	uint8_t  temperature;
	uint8_t  error_status[3];
	uint8_t  mecha_status_up[2];
	uint8_t  temperature_up;
	uint8_t  error_status_up[3];
} __attribute__((packed));

struct mitsu70x_job {
	uint16_t id; /* BE */
	uint8_t status[4];
} __attribute__((packed));

#define NUM_JOBS 170

struct mitsu70x_jobs {
	uint8_t  hdr[4]; /* E4 56 31 31 */
	struct mitsu70x_job jobs[NUM_JOBS];
} __attribute__((packed));

#define MECHA_STATUS_INIT   0x80
#define MECHA_STATUS_FEED   0x50
#define MECHA_STATUS_LOAD   0x40
#define MECHA_STATUS_LOAD2  0x30
#define MECHA_STATUS_PRINT  0x20
#define MECHA_STATUS_IDLE   0x00

#define JOB_STATUS0_NONE    0x00
#define JOB_STATUS0_DATA    0x10
#define JOB_STATUS0_QUEUE   0x20
#define JOB_STATUS0_PRINT   0x50
#define JOB_STATUS0_ASSIGN  0x70 // XXX undefined.
#define JOB_STATUS0_END     0x80

#define JOB_STATUS1_PRINT_MEDIALOAD  0x10
#define JOB_STATUS1_PRINT_PRE_Y      0x20
#define JOB_STATUS1_PRINT_Y          0x30
#define JOB_STATUS1_PRINT_PRE_M      0x40
#define JOB_STATUS1_PRINT_M          0x50
#define JOB_STATUS1_PRINT_PRE_C      0x60
#define JOB_STATUS1_PRINT_C          0x70
#define JOB_STATUS1_PRINT_PRE_OC     0x80
#define JOB_STATUS1_PRINT_OC         0x90
#define JOB_STATUS1_PRINT_EJECT      0xA0

#define JOB_STATUS1_END_OK           0x00
#define JOB_STATUS1_END_MECHA        0x10 // 0x10...0x7f
#define JOB_STATUS1_END_HEADER       0x80
#define JOB_STATUS1_END_PRINT        0x90
#define JOB_STATUS1_END_INTERRUPT    0xA0

#define JOB_STATUS2_END_HEADER_ERROR 0x00
#define JOB_STATUS2_END_HEADER_MEMORY 0x10
#define JOB_STATUS2_END_PRINT_MEDIA   0x00
#define JOB_STATUS2_END_PRINT_PREVERR 0x10
#define JOB_STATUS2_END_INT_TIMEOUT  0x00
#define JOB_STATUS2_END_INT_CANCEL   0x10
#define JOB_STATUS2_END_INT_DISCON   0x20

/* Error codes */
#define ERROR_STATUS0_NOSTRIPBIN     0x01
#define ERROR_STATUS0_NORIBBON       0x02
#define ERROR_STATUS0_NOPAPER        0x03
#define ERROR_STATUS0_MEDIAMISMATCH  0x04
#define ERROR_STATUS0_RIBBONCNTEND   0x05
#define ERROR_STATUS0_BADRIBBON      0x06
#define ERROR_STATUS0_BADJOBPARAM    0x07
#define ERROR_STATUS0_PAPEREND       0x08
#define ERROR_STATUS0_RIBBONEND      0x09
#define ERROR_STATUS0_DOOROPEN_IDLE  0x0A
#define ERROR_STATUS0_DOOROPEN_PRNT  0x0B
#define ERROR_STATUS0_POWEROFF       0x0C // Powered off during printing..?
#define ERROR_STATUS0_NOMCOP         0x0D
#define ERROR_STATUS0_RIBBONSKIP1    0x0E
#define ERROR_STATUS0_RIBBONSKIP2    0x0F
#define ERROR_STATUS0_RIBBONJAM      0x10
#define ERROR_STATUS0_RIBBON_OTHER   0x11 // 0x11->0x1F
#define ERROR_STATUS0_PAPER_JAM      0x20 // 0x20->0x2F
#define ERROR_STATUS0_MECHANICAL     0x30 // 0x30->0x39
#define ERROR_STATUS0_RFID           0x3A
#define ERROR_STATUS0_FLASH          0x3B
#define ERROR_STATUS0_EEPROM         0x3C
#define ERROR_STATUS0_PREHEAT        0x3D
#define ERROR_STATUS0_MDASTATE       0x3E
#define ERROR_STATUS0_PSUFANLOCKED   0x3F
#define ERROR_STATUS0_OTHERS         0x40 // 0x40..?

/* Error classifications */
#define ERROR_STATUS1_PAPER          0x01
#define ERROR_STATUS1_RIBBON         0x02
#define ERROR_STATUS1_SETTING        0x03
#define ERROR_STATUS1_OPEN           0x05
#define ERROR_STATUS1_NOSTRIPBIN     0x06
#define ERROR_STATUS1_PAPERJAM       0x07
#define ERROR_STATUS1_RIBBONSYS      0x08
#define ERROR_STATUS1_MECHANICAL     0x09
#define ERROR_STATUS1_ELECTRICAL     0x0A
#define ERROR_STATUS1_FIRMWARE       0x0E
#define ERROR_STATUS1_OTHER          0x0F

/* Error recovery conditions */
#define ERROR_STATUS2_AUTO           0x00
#define ERROR_STATUS2_RELOAD_PAPER   0x01
#define ERROR_STATUS2_RELOAD_RIBBON  0x02
#define ERROR_STATUS2_CHANGE_BOTH    0x03
#define ERROR_STATUS2_CHANGE_ONE     0x04
#define ERROR_STATUS2_CLOSEUNIT      0x05
#define ERROR_STATUS2_ATTACHSTRIPBIN 0x06
#define ERROR_STATUS2_CLEARJAM       0x07
#define ERROR_STATUS2_CHECKRIBBON    0x08
#define ERROR_STATUS2_OPENCLOSEUNIT  0x0A
#define ERROR_STATUS2_POWEROFF       0x0F

struct mitsu70x_status_deck {
	uint8_t  mecha_status[2];
	uint8_t  temperature;   /* D70/D80 family only, K60 no? */
	uint8_t  error_status[3];
	uint8_t  rsvd_a[3]; /* K60 [1] == temperature? */
	uint8_t  lifetime_prints[4];
	uint8_t  rsvd_b[3]; /* K60 [3] == ?? */
	uint8_t  media_brand;
	uint8_t  media_type;
	uint8_t  media_subtype;	 /* K60 only? */
	uint8_t  rsvd_c[1];
	int16_t  capacity; /* media capacity */
	int16_t  remain;   /* media remaining */
	uint8_t  rsvd_d[2];
	uint8_t  unknown_ctr[4]; /* lifetime + 10 (EK305), lifetime+41 (D80), in BCD! */
	uint8_t  rsvd_e[2]; // Unknown
	uint16_t rsvd_f[16]; /* all 80 00 */
} __attribute__((packed));

struct mitsu70x_status_ver {
	char     ver[6];
	uint16_t checksum; /* Presumably BE */
} __attribute__((packed));

struct mitsu70x_printerstatus_resp {
	uint8_t  hdr[4];  /* E4 56 32 30 */
	uint8_t  memory;
	uint8_t  power;
	uint8_t  unk[20];
	uint8_t  sleeptime; /* In minutes, 0-60 */
	uint8_t  iserial;   /* 0x00 for Enabled, 0x80 for Disabled */
	uint8_t  unk_b[5];  // [4] == 0x44 on D70x, 0x13 on D80, 0x02 on EK305.
	uint8_t  dual_deck; /* 0x80 for dual-deck D707, 0x00 otherwise */
	uint8_t  unk_c[2];  // always 00 00 ??
	uint8_t  subtype;   /* 0x5f on D70x/K60/D80, 0x5e on D70xS/K60-S, 0x01 on EK305 */
	uint8_t  unk_d[3];  // [1:2] == 0x??bd on D70x, 0x0487 on EK305, 0x04d7 on D80
	int16_t  model[6];  /* LE, UTF-16 */
	int16_t  serno[6];  /* LE, UTF-16 */
	struct mitsu70x_status_ver vers[7]; // components are 'MLRTF'
	uint8_t  null[2];
	uint8_t  user_serno[6];  /* XXX Supposedly. Don't know how to set it! */
	struct mitsu70x_status_deck lower;
	struct mitsu70x_status_deck upper;
} __attribute__((packed));

struct mitsu70x_memorystatus_resp {
	uint8_t  hdr[3]; /* E4 56 33 */
	uint8_t  memory;
	uint8_t  size;
	uint8_t  rsvd;
} __attribute__((packed));

struct mitsu70x_calinfo_resp {  /* Interpretations valid for ASK300 */
	uint8_t hdr[6]; /* e4 6a 36 34 31 00 */

	/* Note!  All values below are ASCII hex! ie 0x23 -> 0x32 0x33 */

	uint8_t adj_horiz[2];  /* +- 128, units of 0.085 mm */
	uint8_t adj_vertA[2];  /* +- 128 */
	uint8_t adj_vertB[2];  /*  values are in units of 0.085 mm */
	uint8_t adj_vertC[2];  /*  A is -1->9, B is -4->6, C is -1->9 */
	uint8_t adj_fine[4]; /* 00DC */
	uint8_t adj_m3[2]; /* -100 -> 100 (converted to hex) */
	uint8_t unk_c[28];
	//             30 30 30 30  46 46 36 34 35 35 30 30
	// 46 46 36 34 35 35 30 30  44 43 30 30 30 30 30 30

	uint8_t adj_density[4]; /* 6800 -> 9000, def 8000 */
	uint8_t adj_24v[4];     /* 0000 -> 00FF */
} __attribute__((packed));

/*
  NOTES:  Other stuff seen:

  1b 45 48 [30 31 32] <-- No resp [30 any deck, 31 is lower, 32 is upper?]
  1b 45 4a [30 31 32] <-- No resp [30 any deck, 31 is lower, 32 is upper?]
  1b 45 53 00 10 [ ...? ] XX XX . "set printer number"..
  1b 45 53 90 00 0a [ ... 9 bytes of something ] 10
  1b 52 XX 00    <-- XX = something + 0x51
  1b 54 00 [00 31 32]  <-- No resp [00 any, 31 lower, 32 upper???]
  1b 54 31 00   "feed and cut"
  1b 54 53 90 00 0a 00 00  00 00 00 00 00 00 00 00
  1b 56 34 [31 32] <-- 6 byte response, last two bytes are value.
  1b 5a 43 00 <-- No resp
  1b 67 18 ...   (??)
  1b 6a ...      Various test commands
  1b 6e ...      (??)
  1b 72 45 [31 32]
  1b 72 67 00 00 00

*/

struct mitsu70x_hdr {
	uint8_t  hdr[4]; /* 1b 5a 54 XX */  // XXX also, seen 1b 5a 43!
	uint16_t jobid;
	uint8_t  rewind[2];  /* K60/EK305/D80 only */
	uint8_t  zero0[8];

	uint16_t cols;
	uint16_t rows;
	uint16_t lamcols;
	uint16_t lamrows;
	uint8_t  speed;
	uint8_t  zero1[7];

	uint8_t  deck; /* 0 = default, 1 = lower, 2 = upper -- Non-D70/D707 is always '1' */
	uint8_t  zero2[7];
	uint8_t  laminate; /* 00 == on, 01 == off */
	uint8_t  laminate_mode; /* 00 == glossy, 02 == matte */
	uint8_t  zero3[6];

	uint8_t  multicut;
	uint8_t  zero4[12]; /* NOTE:  everything past this point is an extension */
	uint8_t  sharpen;  /* 0-9.  5 is "normal", 0 is "off" */
	uint8_t  mode;     /* 0 for cooked YMC planar, 1 for packed BGR */
	uint8_t  use_lut;  /* in BGR mode, 0 disables, 1 enables */
	uint8_t  reversed; /* 1 tells the backend the row data is correct */
	uint8_t  pad[447];
} __attribute__((packed));

STATIC_ASSERT(sizeof(struct mitsu70x_hdr) == 512);
STATIC_ASSERT(sizeof(struct mitsu70x_calinfo_resp) == 56);

static int mitsu70x_get_printerstatus(struct mitsu70x_ctx *ctx, struct mitsu70x_printerstatus_resp *resp);
static int mitsu70x_main_loop(void *vctx, const void *vjob, int wait_for_return);

/* Error dumps, etc */

static const char *mitsu70x_mechastatus(uint8_t *sts)
{
	switch(sts[0]) {
	case MECHA_STATUS_INIT:
		return "Initializing";
	case MECHA_STATUS_FEED:
		return "Paper Feeding/Cutting";
	case MECHA_STATUS_LOAD:
	case MECHA_STATUS_LOAD2:
		return "Media Loading";
	case MECHA_STATUS_PRINT:
		return "Printing";
	case MECHA_STATUS_IDLE:
		return "Idle";
	default:
		break;
	}
	return "Unknown Mechanical Status";
}

static const char *mitsu70x_jobstatuses(uint8_t *sts)
{
	switch(sts[0]) {
	case JOB_STATUS0_NONE:
		return "No Job";
	case JOB_STATUS0_DATA:
		return "Data transfer";
	case JOB_STATUS0_QUEUE:
		return "Queued for printing";
	case JOB_STATUS0_PRINT:
		switch(sts[1]) {
		case JOB_STATUS1_PRINT_MEDIALOAD:
			return "Media loading";
		case JOB_STATUS1_PRINT_PRE_Y:
			return "Waiting to print yellow plane";
		case JOB_STATUS1_PRINT_Y:
			return "Printing yellow plane";
		case JOB_STATUS1_PRINT_PRE_M:
			return "Waiting to print magenta plane";
		case JOB_STATUS1_PRINT_M:
			return "Printing magenta plane";
		case JOB_STATUS1_PRINT_PRE_C:
			return "Waiting to print cyan plane";
		case JOB_STATUS1_PRINT_C:
			return "Printing cyan plane";
		case JOB_STATUS1_PRINT_PRE_OC:
			return "Waiting to laminate page";
		case JOB_STATUS1_PRINT_OC:
			return "Laminating page";
		case JOB_STATUS1_PRINT_EJECT:
			return "Ejecting page";
		default:
			return "Unknown 'Print' status1";
		}
		break;
	case JOB_STATUS0_ASSIGN:
		return "Unknown 'Assignment' status1";
	case JOB_STATUS0_END:
		switch(sts[1]) {
		case JOB_STATUS1_END_OK:
			return "Normal End";
		case JOB_STATUS1_END_HEADER:
			switch(sts[2]) {
			case JOB_STATUS2_END_HEADER_ERROR:
				return "Incorrect Header data (bad print size?)";
			case JOB_STATUS2_END_HEADER_MEMORY:
				return "Insufficient printer memory";
			default:
				return "Unknown 'End Header' status2";
			}
			break;
		case JOB_STATUS1_END_PRINT:
			switch(sts[2]) {
			case JOB_STATUS2_END_PRINT_MEDIA:
				return "Incorrect mediasize";
			case JOB_STATUS2_END_PRINT_PREVERR:
				return "Previous job terminated abnormally";
			default:
				return "Unknown 'End Print' status2";
			}
			break;
		case JOB_STATUS1_END_INTERRUPT:
			switch(sts[2]) {
			case JOB_STATUS2_END_INT_TIMEOUT:
				return "Timeout";
			case JOB_STATUS2_END_INT_CANCEL:
				return "Job cancelled";
			case JOB_STATUS2_END_INT_DISCON:
				return "Printer disconnected";
			default:
				return "Unknown 'End Print' status2";
			}
			break;
		default:
			if (sts[1] >= 0x10 && sts[1] <= 0x7f)
				return "Mechanical Error";
			else
				return "Unknown 'End' status1";
		}
		break;
	default:
		break;
	}

	return "Unknown status0";
}

static const char *mitsu70x_errorclass(uint8_t *err)
{
	switch(err[1]) {
	case ERROR_STATUS1_PAPER:
		return "Paper";
	case ERROR_STATUS1_RIBBON:
		return "Ribbon";
	case ERROR_STATUS1_SETTING:
		return "Job settings";
	case ERROR_STATUS1_OPEN:
		return "Cover open";
	case ERROR_STATUS1_NOSTRIPBIN:
		return "No cut bin";
	case ERROR_STATUS1_PAPERJAM:
		return "Paper jam";
	case ERROR_STATUS1_RIBBONSYS:
		return "Ribbon system";
	case ERROR_STATUS1_MECHANICAL:
		return "Mechanical";
	case ERROR_STATUS1_ELECTRICAL:
		return "Electrical";
	case ERROR_STATUS1_FIRMWARE:
		return "Firmware";
	case ERROR_STATUS1_OTHER:
		return "Other";
	default:
		break;
	}
	return "Unknown error class";
}

static const char *mitsu70x_errorrecovery(uint8_t *err)
{
	switch(err[1]) {
	case ERROR_STATUS2_AUTO:
		return "Automatic recovery";
	case ERROR_STATUS2_RELOAD_PAPER:
		return "Reload or change paper";
	case ERROR_STATUS2_RELOAD_RIBBON:
		return "Reload or change ribbon";
	case ERROR_STATUS2_CHANGE_BOTH:
		return "Change paper and ribbon";
	case ERROR_STATUS2_CHANGE_ONE:
		return "Change paper or ribbon";
	case ERROR_STATUS2_CLOSEUNIT:
		return "Close printer";
	case ERROR_STATUS2_ATTACHSTRIPBIN:
		return "Attach Strip Bin";
	case ERROR_STATUS2_CLEARJAM:
		return "Remove and reload paper";
	case ERROR_STATUS2_CHECKRIBBON:
		return "Check ribbon and reload paper";
	case ERROR_STATUS2_OPENCLOSEUNIT:
		return "Open then close printer";
	case ERROR_STATUS2_POWEROFF:
		return "Power-cycle printer";
	default:
		break;
	}
	return "Unknown recovery";
}

static const char *mitsu70x_errors(uint8_t *err)
{
	switch(err[0]) {
	case ERROR_STATUS0_NOSTRIPBIN:
		return "Strip bin not attached";
	case ERROR_STATUS0_NORIBBON:
		return "No ribbon detected";
	case ERROR_STATUS0_NOPAPER:
		return "No paper loaded";
	case ERROR_STATUS0_MEDIAMISMATCH:
		return "Ribbon/Paper mismatch";
	case ERROR_STATUS0_RIBBONCNTEND:
		return "Ribbon count end";
	case ERROR_STATUS0_BADRIBBON:
		return "Illegal Ribbon";
	case ERROR_STATUS0_BADJOBPARAM:
		return "Job does not match loaded media";
	case ERROR_STATUS0_PAPEREND:
		return "End of paper detected";
	case ERROR_STATUS0_RIBBONEND:
		return "End of ribbon detected";
	case ERROR_STATUS0_DOOROPEN_IDLE:
	case ERROR_STATUS0_DOOROPEN_PRNT:
		return "Printer door open";
	case ERROR_STATUS0_POWEROFF:
		return "Printer powered off"; // nonsense..
	case ERROR_STATUS0_RIBBONSKIP1:
	case ERROR_STATUS0_RIBBONSKIP2:
		return "Ribbon skipped";
	case ERROR_STATUS0_RIBBONJAM:
		return "Ribbon stuck to paper";
	case ERROR_STATUS0_RFID:
		return "RFID read error";
	case ERROR_STATUS0_FLASH:
		return "FLASH read error";
	case ERROR_STATUS0_EEPROM:
		return "EEPROM read error";
	case ERROR_STATUS0_PREHEAT:
		return "Preheating unit time out";
	case ERROR_STATUS0_MDASTATE:
		return "Unknown MDA state";
	case ERROR_STATUS0_PSUFANLOCKED:
		return "Power supply fan locked up";
	default:
		break;
	}

	if (err[0] >= ERROR_STATUS0_RIBBON_OTHER &&
	    err[0] < ERROR_STATUS0_PAPER_JAM) {
		return "Unknown ribbon error";
		// XXX use err[1]/err[2] codes?
	}
	if (err[0] >= ERROR_STATUS0_PAPER_JAM &&
	    err[0] < ERROR_STATUS0_MECHANICAL) {
		return "Paper jam";
		// XXX use err[1]/err[2] codes?
	}
	if (err[0] >= ERROR_STATUS0_MECHANICAL &&
	    err[0] < ERROR_STATUS0_RFID) {
		return "Unknown mechanical error";
		// XXX use err[1]/err[2] codes?
	}

	return "Unknown error";
}


#define CMDBUF_LEN 512
#define READBACK_LEN 256

static void *mitsu70x_init(void)
{
	struct mitsu70x_ctx *ctx = malloc(sizeof(struct mitsu70x_ctx));
	if (!ctx) {
		ERROR("Memory Allocation Failure!\n");
		return NULL;
	}
	memset(ctx, 0, sizeof(struct mitsu70x_ctx));

	return ctx;
}

static int mitsu70x_attach(void *vctx, struct dyesub_connection *conn, uint8_t jobid)
{
	struct mitsu70x_ctx *ctx = vctx;

	ctx->jobid = jobid;
	if (!ctx->jobid)
		jobid++;

	ctx->conn = conn;

	ctx->last_l = ctx->last_u = 65535;

#if defined(WITH_DYNAMIC)
	/* Attempt to open the library */
	if (mitsu_loadlib(&ctx->lib, ctx->conn->type))
#endif
		WARNING("Dynamic library support not loaded, will be unable to print!\n");

	struct mitsu70x_printerstatus_resp resp;
	int ret;

	if (test_mode < TEST_MODE_NOATTACH) {
		ret = mitsu70x_get_printerstatus(ctx, &resp);
		if (ret) {
			ERROR("Unable to get printer status! (%d)\n", ret);
			return CUPS_BACKEND_FAILED;
		}
	} else {
		int media_code = 0xf;
		if (getenv("MEDIA_CODE"))
			media_code = atoi(getenv("MEDIA_CODE")) & 0xf;

		resp.upper.mecha_status[0] = MECHA_STATUS_INIT;
		resp.lower.mecha_status[0] = MECHA_STATUS_INIT;
		resp.upper.capacity = cpu_to_be16(230);
		resp.lower.capacity = cpu_to_be16(230);
		resp.upper.remain = cpu_to_be16(200);
		resp.lower.remain = cpu_to_be16(200);
		resp.upper.media_brand = 0xff;
		resp.lower.media_brand = 0xff;
		resp.upper.media_type = media_code;
		resp.lower.media_type = media_code;
		resp.dual_deck = 0x80;  /* Make it a dual deck */
		resp.vers[0].ver[0] = 0;
		resp.subtype = 0x5e;
	}

	/* Figure out if we're a D707 with two decks */
	if (ctx->conn->type == P_MITSU_D70X &&
	    resp.dual_deck == 0x80)
		ctx->num_decks = 2;
	else
		ctx->num_decks = 1;

	/* Set up markers */
	ctx->marker[0].color = "#00FFFF#FF00FF#FFFF00";
	ctx->marker[0].name = mitsu_media_types(ctx->conn->type, resp.lower.media_brand, resp.lower.media_type);
	ctx->marker[0].numtype = resp.lower.media_type;
	ctx->marker[0].levelmax = be16_to_cpu(resp.lower.capacity);
	ctx->marker[0].levelnow = be16_to_cpu(resp.lower.remain);
	ctx->medias[0] = resp.lower.media_type & 0xf;
	ctx->media_subtypes[0] = resp.lower.media_subtype;

	if (ctx->num_decks == 2) {
		ctx->marker[1].color = "#00FFFF#FF00FF#FFFF00";
		ctx->marker[1].name = mitsu_media_types(ctx->conn->type, resp.upper.media_brand, resp.upper.media_type);
		ctx->marker[1].numtype = resp.upper.media_type;
		ctx->marker[1].levelmax = be16_to_cpu(resp.upper.capacity);
		ctx->marker[1].levelnow = be16_to_cpu(resp.upper.remain);
		ctx->medias[1] = resp.upper.media_type & 0xf;
		ctx->media_subtypes[1] = resp.upper.media_subtype;
	}

	/* Store the FW version */
	memcpy(ctx->fwver, resp.vers[0].ver, 6);
	ctx->fwver[6] = 0;
	/* Store the serial number */
	for (int i = 0 ; i < 6 ; i++) {
		ctx->serno[i] = le16_to_cpu(resp.serno[i]) & 0x7f;
	}
	ctx->serno[6] = 0;

	/* Check for the -S variants */
	if (resp.subtype == 0x5e)
		ctx->is_s = 1;

	/* FW sanity checking */
	if (ctx->conn->type == P_KODAK_305) {
		/* Known versions:
		   v1.02: M 316E81 1433   (Add Ultrafine and matte support)
		   v1.04: M 316F83 2878   (Add 2x6 strip and support new "Triton" media)
		   v3.01: M 443A12 8908   (add 5" media support)
		   v3.02: M 443B11 2647   (Unknown)
		*/
		if (strncmp(resp.vers[0].ver, "443B11", 6) < 0)
			WARNING("Printer FW out of date. Highly recommend upgrading EK305 to v3.02 or newer!\n");
	} else if (ctx->conn->type == P_MITSU_K60) {
		/* Known versions:
		   v1.05: M 316M31 148C   (Add HG media support)
		*/
		if (strncmp(resp.vers[0].ver, "316M31", 6) < 0)
			WARNING("Printer FW out of date. Highly recommend upgrading K60 to v1.05 or newer!\n");
	} else if (ctx->conn->type == P_MITSU_D70X) {
		/* Known versions for D70/D707:
		   v1.10: M 316V11 064D   (Add ultrafine mode, 6x6 support, 2x6 strip, and more?)
		   v1.12: M 316W11 9FC3   (??)
		   v1.13:                 (??)

		   Known versions for D70-S/D707-S
		   v???   M 316K11 E08A   (??)
		*/
		if (strncmp(resp.vers[0].ver, "316W11", 6) < 0)
			WARNING("Printer FW out of date. Highly recommend upgrading D70/D707 to v1.12 or newer!\n");
	} else if (ctx->conn->type == P_FUJI_ASK300) {
		/* Known versions:
		   v?.??: M 316A21 7998   (ancient. no matte or ultrafine)
		   v?.??: M 316H21 F8EB
		   v4.20a: M 316J21 4431  (Add 2x6 strip support)
		*/
		if (strncmp(resp.vers[0].ver, "316J21", 6) < 0)
			WARNING("Printer FW out of date. Highly recommend upgrading ASK300 to v4.20a or newer!\n");
	}

	return CUPS_BACKEND_OK;
}

static void mitsu70x_cleanup_job(const void *vjob) {
	const struct mitsu70x_printjob *job = vjob;

	if (job->databuf)
		free(job->databuf);
	if (job->spoolbuf)
		free(job->spoolbuf);

	free((void*)job);
}

static void mitsu70x_teardown(void *vctx) {
	struct mitsu70x_ctx *ctx = vctx;

	if (!ctx)
		return;

	mitsu_destroylib(&ctx->lib);