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Diffstat (limited to 'sound/isa/wavefront/wavefront_synth.c')
| -rw-r--r-- | sound/isa/wavefront/wavefront_synth.c | 2243 |
1 files changed, 2243 insertions, 0 deletions
diff --git a/sound/isa/wavefront/wavefront_synth.c b/sound/isa/wavefront/wavefront_synth.c new file mode 100644 index 0000000..0c3c951 --- /dev/null +++ b/sound/isa/wavefront/wavefront_synth.c @@ -0,0 +1,2243 @@ +/* Copyright (C) by Paul Barton-Davis 1998-1999 + * + * Some portions of this file are taken from work that is + * copyright (C) by Hannu Savolainen 1993-1996 + * + * This program is distributed under the GNU GENERAL PUBLIC LICENSE (GPL) + * Version 2 (June 1991). See the "COPYING" file distributed with this software + * for more info. + */ + +/* + * An ALSA lowlevel driver for Turtle Beach ICS2115 wavetable synth + * (Maui, Tropez, Tropez Plus) + * + * This driver supports the onboard wavetable synthesizer (an ICS2115), + * including patch, sample and program loading and unloading, conversion + * of GUS patches during loading, and full user-level access to all + * WaveFront commands. It tries to provide semi-intelligent patch and + * sample management as well. + * + */ + +#include <sound/driver.h> +#include <asm/io.h> +#include <linux/interrupt.h> +#include <linux/init.h> +#include <linux/delay.h> +#include <linux/time.h> +#include <linux/wait.h> +#include <linux/moduleparam.h> +#include <sound/core.h> +#include <sound/snd_wavefront.h> +#include <sound/initval.h> + +static int wf_raw = 0; /* we normally check for "raw state" to firmware + loading. if non-zero, then during driver loading, the + state of the board is ignored, and we reset the + board and load the firmware anyway. + */ + +static int fx_raw = 1; /* if this is zero, we'll leave the FX processor in + whatever state it is when the driver is loaded. + The default is to download the microprogram and + associated coefficients to set it up for "default" + operation, whatever that means. + */ + +static int debug_default = 0; /* you can set this to control debugging + during driver loading. it takes any combination + of the WF_DEBUG_* flags defined in + wavefront.h + */ + +/* XXX this needs to be made firmware and hardware version dependent */ + +static char *ospath = "/etc/sound/wavefront.os"; /* where to find a processed + version of the WaveFront OS + */ + +static int wait_usecs = 150; /* This magic number seems to give pretty optimal + throughput based on my limited experimentation. + If you want to play around with it and find a better + value, be my guest. Remember, the idea is to + get a number that causes us to just busy wait + for as many WaveFront commands as possible, without + coming up with a number so large that we hog the + whole CPU. + + Specifically, with this number, out of about 134,000 + status waits, only about 250 result in a sleep. + */ + +static int sleep_interval = 100; /* HZ/sleep_interval seconds per sleep */ +static int sleep_tries = 50; /* number of times we'll try to sleep */ + +static int reset_time = 2; /* hundreths of a second we wait after a HW + reset for the expected interrupt. + */ + +static int ramcheck_time = 20; /* time in seconds to wait while ROM code + checks on-board RAM. + */ + +static int osrun_time = 10; /* time in seconds we wait for the OS to + start running. + */ +module_param(wf_raw, int, 0444); +MODULE_PARM_DESC(wf_raw, "if non-zero, assume that we need to boot the OS"); +module_param(fx_raw, int, 0444); +MODULE_PARM_DESC(fx_raw, "if non-zero, assume that the FX process needs help"); +module_param(debug_default, int, 0444); +MODULE_PARM_DESC(debug_default, "debug parameters for card initialization"); +module_param(wait_usecs, int, 0444); +MODULE_PARM_DESC(wait_usecs, "how long to wait without sleeping, usecs"); +module_param(sleep_interval, int, 0444); +MODULE_PARM_DESC(sleep_interval, "how long to sleep when waiting for reply"); +module_param(sleep_tries, int, 0444); +MODULE_PARM_DESC(sleep_tries, "how many times to try sleeping during a wait"); +module_param(ospath, charp, 0444); +MODULE_PARM_DESC(ospath, "full pathname to processed ICS2115 OS firmware"); +module_param(reset_time, int, 0444); +MODULE_PARM_DESC(reset_time, "how long to wait for a reset to take effect"); +module_param(ramcheck_time, int, 0444); +MODULE_PARM_DESC(ramcheck_time, "how many seconds to wait for the RAM test"); +module_param(osrun_time, int, 0444); +MODULE_PARM_DESC(osrun_time, "how many seconds to wait for the ICS2115 OS"); + +/* if WF_DEBUG not defined, no run-time debugging messages will + be available via the debug flag setting. Given the current + beta state of the driver, this will remain set until a future + version. +*/ + +#define WF_DEBUG 1 + +#ifdef WF_DEBUG + +#if defined(NEW_MACRO_VARARGS) || __GNUC__ >= 3 +#define DPRINT(cond, ...) \ + if ((dev->debug & (cond)) == (cond)) { \ + snd_printk (__VA_ARGS__); \ + } +#else +#define DPRINT(cond, args...) \ + if ((dev->debug & (cond)) == (cond)) { \ + snd_printk (args); \ + } +#endif +#else +#define DPRINT(cond, args...) +#endif /* WF_DEBUG */ + +#define LOGNAME "WaveFront: " + +/* bitmasks for WaveFront status port value */ + +#define STAT_RINTR_ENABLED 0x01 +#define STAT_CAN_READ 0x02 +#define STAT_INTR_READ 0x04 +#define STAT_WINTR_ENABLED 0x10 +#define STAT_CAN_WRITE 0x20 +#define STAT_INTR_WRITE 0x40 + +static int wavefront_delete_sample (snd_wavefront_t *, int sampnum); +static int wavefront_find_free_sample (snd_wavefront_t *); + +typedef struct { + int cmd; + char *action; + unsigned int read_cnt; + unsigned int write_cnt; + int need_ack; +} wavefront_command; + +static struct { + int errno; + const char *errstr; +} wavefront_errors[] = { + { 0x01, "Bad sample number" }, + { 0x02, "Out of sample memory" }, + { 0x03, "Bad patch number" }, + { 0x04, "Error in number of voices" }, + { 0x06, "Sample load already in progress" }, + { 0x0B, "No sample load request pending" }, + { 0x0E, "Bad MIDI channel number" }, + { 0x10, "Download Record Error" }, + { 0x80, "Success" }, + { 0x0 } +}; + +#define NEEDS_ACK 1 + +static wavefront_command wavefront_commands[] = { + { WFC_SET_SYNTHVOL, "set synthesizer volume", 0, 1, NEEDS_ACK }, + { WFC_GET_SYNTHVOL, "get synthesizer volume", 1, 0, 0}, + { WFC_SET_NVOICES, "set number of voices", 0, 1, NEEDS_ACK }, + { WFC_GET_NVOICES, "get number of voices", 1, 0, 0 }, + { WFC_SET_TUNING, "set synthesizer tuning", 0, 2, NEEDS_ACK }, + { WFC_GET_TUNING, "get synthesizer tuning", 2, 0, 0 }, + { WFC_DISABLE_CHANNEL, "disable synth channel", 0, 1, NEEDS_ACK }, + { WFC_ENABLE_CHANNEL, "enable synth channel", 0, 1, NEEDS_ACK }, + { WFC_GET_CHANNEL_STATUS, "get synth channel status", 3, 0, 0 }, + { WFC_MISYNTH_OFF, "disable midi-in to synth", 0, 0, NEEDS_ACK }, + { WFC_MISYNTH_ON, "enable midi-in to synth", 0, 0, NEEDS_ACK }, + { WFC_VMIDI_ON, "enable virtual midi mode", 0, 0, NEEDS_ACK }, + { WFC_VMIDI_OFF, "disable virtual midi mode", 0, 0, NEEDS_ACK }, + { WFC_MIDI_STATUS, "report midi status", 1, 0, 0 }, + { WFC_FIRMWARE_VERSION, "report firmware version", 2, 0, 0 }, + { WFC_HARDWARE_VERSION, "report hardware version", 2, 0, 0 }, + { WFC_GET_NSAMPLES, "report number of samples", 2, 0, 0 }, + { WFC_INSTOUT_LEVELS, "report instantaneous output levels", 7, 0, 0 }, + { WFC_PEAKOUT_LEVELS, "report peak output levels", 7, 0, 0 }, + { WFC_DOWNLOAD_SAMPLE, "download sample", + 0, WF_SAMPLE_BYTES, NEEDS_ACK }, + { WFC_DOWNLOAD_BLOCK, "download block", 0, 0, NEEDS_ACK}, + { WFC_DOWNLOAD_SAMPLE_HEADER, "download sample header", + 0, WF_SAMPLE_HDR_BYTES, NEEDS_ACK }, + { WFC_UPLOAD_SAMPLE_HEADER, "upload sample header", 13, 2, 0 }, + + /* This command requires a variable number of bytes to be written. + There is a hack in snd_wavefront_cmd() to support this. The actual + count is passed in as the read buffer ptr, cast appropriately. + Ugh. + */ + + { WFC_DOWNLOAD_MULTISAMPLE, "download multisample", 0, 0, NEEDS_ACK }, + + /* This one is a hack as well. We just read the first byte of the + response, don't fetch an ACK, and leave the rest to the + calling function. Ugly, ugly, ugly. + */ + + { WFC_UPLOAD_MULTISAMPLE, "upload multisample", 2, 1, 0 }, + { WFC_DOWNLOAD_SAMPLE_ALIAS, "download sample alias", + 0, WF_ALIAS_BYTES, NEEDS_ACK }, + { WFC_UPLOAD_SAMPLE_ALIAS, "upload sample alias", WF_ALIAS_BYTES, 2, 0}, + { WFC_DELETE_SAMPLE, "delete sample", 0, 2, NEEDS_ACK }, + { WFC_IDENTIFY_SAMPLE_TYPE, "identify sample type", 5, 2, 0 }, + { WFC_UPLOAD_SAMPLE_PARAMS, "upload sample parameters" }, + { WFC_REPORT_FREE_MEMORY, "report free memory", 4, 0, 0 }, + { WFC_DOWNLOAD_PATCH, "download patch", 0, 134, NEEDS_ACK }, + { WFC_UPLOAD_PATCH, "upload patch", 132, 2, 0 }, + { WFC_DOWNLOAD_PROGRAM, "download program", 0, 33, NEEDS_ACK }, + { WFC_UPLOAD_PROGRAM, "upload program", 32, 1, 0 }, + { WFC_DOWNLOAD_EDRUM_PROGRAM, "download enhanced drum program", 0, 9, + NEEDS_ACK}, + { WFC_UPLOAD_EDRUM_PROGRAM, "upload enhanced drum program", 8, 1, 0}, + { WFC_SET_EDRUM_CHANNEL, "set enhanced drum program channel", + 0, 1, NEEDS_ACK }, + { WFC_DISABLE_DRUM_PROGRAM, "disable drum program", 0, 1, NEEDS_ACK }, + { WFC_REPORT_CHANNEL_PROGRAMS, "report channel program numbers", + 32, 0, 0 }, + { WFC_NOOP, "the no-op command", 0, 0, NEEDS_ACK }, + { 0x00 } +}; + +static const char * +wavefront_errorstr (int errnum) + +{ + int i; + + for (i = 0; wavefront_errors[i].errstr; i++) { + if (wavefront_errors[i].errno == errnum) { + return wavefront_errors[i].errstr; + } + } + + return "Unknown WaveFront error"; +} + +static wavefront_command * +wavefront_get_command (int cmd) + +{ + int i; + + for (i = 0; wavefront_commands[i].cmd != 0; i++) { + if (cmd == wavefront_commands[i].cmd) { + return &wavefront_commands[i]; + } + } + + return (wavefront_command *) 0; +} + +static inline int +wavefront_status (snd_wavefront_t *dev) + +{ + return inb (dev->status_port); +} + +static int +wavefront_sleep (int limit) + +{ + set_current_state(TASK_INTERRUPTIBLE); + schedule_timeout(limit); + + return signal_pending(current); +} + +static int +wavefront_wait (snd_wavefront_t *dev, int mask) + +{ + int i; + + /* Spin for a short period of time, because >99% of all + requests to the WaveFront can be serviced inline like this. + */ + + for (i = 0; i < wait_usecs; i += 5) { + if (wavefront_status (dev) & mask) { + return 1; + } + udelay(5); + } + + for (i = 0; i < sleep_tries; i++) { + + if (wavefront_status (dev) & mask) { + return 1; + } + + if (wavefront_sleep (HZ/sleep_interval)) { + return (0); + } + } + + return (0); +} + +static int +wavefront_read (snd_wavefront_t *dev) + +{ + if (wavefront_wait (dev, STAT_CAN_READ)) + return inb (dev->data_port); + + DPRINT (WF_DEBUG_DATA, "read timeout.\n"); + + return -1; +} + +static int +wavefront_write (snd_wavefront_t *dev, unsigned char data) + +{ + if (wavefront_wait (dev, STAT_CAN_WRITE)) { + outb (data, dev->data_port); + return 0; + } + + DPRINT (WF_DEBUG_DATA, "write timeout.\n"); + + return -1; +} + +int +snd_wavefront_cmd (snd_wavefront_t *dev, + int cmd, unsigned char *rbuf, unsigned char *wbuf) + +{ + int ack; + unsigned int i; + int c; + wavefront_command *wfcmd; + + if ((wfcmd = wavefront_get_command (cmd)) == (wavefront_command *) 0) { + snd_printk ("command 0x%x not supported.\n", + cmd); + return 1; + } + + /* Hack to handle the one variable-size write command. See + wavefront_send_multisample() for the other half of this + gross and ugly strategy. + */ + + if (cmd == WFC_DOWNLOAD_MULTISAMPLE) { + wfcmd->write_cnt = (unsigned long) rbuf; + rbuf = NULL; + } + + DPRINT (WF_DEBUG_CMD, "0x%x [%s] (%d,%d,%d)\n", + cmd, wfcmd->action, wfcmd->read_cnt, + wfcmd->write_cnt, wfcmd->need_ack); + + if (wavefront_write (dev, cmd)) { + DPRINT ((WF_DEBUG_IO|WF_DEBUG_CMD), "cannot request " + "0x%x [%s].\n", + cmd, wfcmd->action); + return 1; + } + + if (wfcmd->write_cnt > 0) { + DPRINT (WF_DEBUG_DATA, "writing %d bytes " + "for 0x%x\n", + wfcmd->write_cnt, cmd); + + for (i = 0; i < wfcmd->write_cnt; i++) { + if (wavefront_write (dev, wbuf[i])) { + DPRINT (WF_DEBUG_IO, "bad write for byte " + "%d of 0x%x [%s].\n", + i, cmd, wfcmd->action); + return 1; + } + + DPRINT (WF_DEBUG_DATA, "write[%d] = 0x%x\n", + i, wbuf[i]); + } + } + + if (wfcmd->read_cnt > 0) { + DPRINT (WF_DEBUG_DATA, "reading %d ints " + "for 0x%x\n", + wfcmd->read_cnt, cmd); + + for (i = 0; i < wfcmd->read_cnt; i++) { + + if ((c = wavefront_read (dev)) == -1) { + DPRINT (WF_DEBUG_IO, "bad read for byte " + "%d of 0x%x [%s].\n", + i, cmd, wfcmd->action); + return 1; + } + + /* Now handle errors. Lots of special cases here */ + + if (c == 0xff) { + if ((c = wavefront_read (dev)) == -1) { + DPRINT (WF_DEBUG_IO, "bad read for " + "error byte at " + "read byte %d " + "of 0x%x [%s].\n", + i, cmd, + wfcmd->action); + return 1; + } + + /* Can you believe this madness ? */ + + if (c == 1 && + wfcmd->cmd == WFC_IDENTIFY_SAMPLE_TYPE) { + rbuf[0] = WF_ST_EMPTY; + return (0); + + } else if (c == 3 && + wfcmd->cmd == WFC_UPLOAD_PATCH) { + + return 3; + + } else if (c == 1 && + wfcmd->cmd == WFC_UPLOAD_PROGRAM) { + + return 1; + + } else { + + DPRINT (WF_DEBUG_IO, "error %d (%s) " + "during " + "read for byte " + "%d of 0x%x " + "[%s].\n", + c, + wavefront_errorstr (c), + i, cmd, + wfcmd->action); + return 1; + + } + + } else { + rbuf[i] = c; + } + + DPRINT (WF_DEBUG_DATA, "read[%d] = 0x%x\n",i, rbuf[i]); + } + } + + if ((wfcmd->read_cnt == 0 && wfcmd->write_cnt == 0) || wfcmd->need_ack) { + + DPRINT (WF_DEBUG_CMD, "reading ACK for 0x%x\n", cmd); + + /* Some commands need an ACK, but return zero instead + of the standard value. + */ + + if ((ack = wavefront_read (dev)) == 0) { + ack = WF_ACK; + } + + if (ack != WF_ACK) { + if (ack == -1) { + DPRINT (WF_DEBUG_IO, "cannot read ack for " + "0x%x [%s].\n", + cmd, wfcmd->action); + return 1; + + } else { + int err = -1; /* something unknown */ + + if (ack == 0xff) { /* explicit error */ + + if ((err = wavefront_read (dev)) == -1) { + DPRINT (WF_DEBUG_DATA, + "cannot read err " + "for 0x%x [%s].\n", + cmd, wfcmd->action); + } + } + + DPRINT (WF_DEBUG_IO, "0x%x [%s] " + "failed (0x%x, 0x%x, %s)\n", + cmd, wfcmd->action, ack, err, + wavefront_errorstr (err)); + + return -err; + } + } + + DPRINT (WF_DEBUG_DATA, "ack received " + "for 0x%x [%s]\n", + cmd, wfcmd->action); + } else { + + DPRINT (WF_DEBUG_CMD, "0x%x [%s] does not need " + "ACK (%d,%d,%d)\n", + cmd, wfcmd->action, wfcmd->read_cnt, + wfcmd->write_cnt, wfcmd->need_ack); + } + + return 0; + +} + +/*********************************************************************** +WaveFront data munging + +Things here are weird. All data written to the board cannot +have its most significant bit set. Any data item with values +potentially > 0x7F (127) must be split across multiple bytes. + +Sometimes, we need to munge numeric values that are represented on +the x86 side as 8-32 bit values. Sometimes, we need to munge data +that is represented on the x86 side as an array of bytes. The most +efficient approach to handling both cases seems to be to use 2 +different functions for munging and 2 for de-munging. This avoids +weird casting and worrying about bit-level offsets. + +**********************************************************************/ + +static unsigned char * +munge_int32 (unsigned int src, + unsigned char *dst, + unsigned int dst_size) +{ + unsigned int i; + + for (i = 0; i < dst_size; i++) { + *dst = src & 0x7F; /* Mask high bit of LSB */ + src = src >> 7; /* Rotate Right 7 bits */ + /* Note: we leave the upper bits in place */ + + dst++; + }; + return dst; +}; + +static int +demunge_int32 (unsigned char* src, int src_size) + +{ + int i; + int outval = 0; + + for (i = src_size - 1; i >= 0; i--) { + outval=(outval<<7)+src[i]; + } + + return outval; +}; + +static +unsigned char * +munge_buf (unsigned char *src, unsigned char *dst, unsigned int dst_size) + +{ + unsigned int i; + unsigned int last = dst_size / 2; + + for (i = 0; i < last; i++) { + *dst++ = src[i] & 0x7f; + *dst++ = src[i] >> 7; + } + return dst; +} + +static +unsigned char * +demunge_buf (unsigned char *src, unsigned char *dst, unsigned int src_bytes) + +{ + int i; + unsigned char *end = src + src_bytes; + + end = src + src_bytes; + + /* NOTE: src and dst *CAN* point to the same address */ + + for (i = 0; src != end; i++) { + dst[i] = *src++; + dst[i] |= (*src++)<<7; + } + + return dst; +} + +/*********************************************************************** +WaveFront: sample, patch and program management. +***********************************************************************/ + +static int +wavefront_delete_sample (snd_wavefront_t *dev, int sample_num) + +{ + unsigned char wbuf[2]; + int x; + + wbuf[0] = sample_num & 0x7f; + wbuf[1] = sample_num >> 7; + + if ((x = snd_wavefront_cmd (dev, WFC_DELETE_SAMPLE, NULL, wbuf)) == 0) { + dev->sample_status[sample_num] = WF_ST_EMPTY; + } + + return x; +} + +static int +wavefront_get_sample_status (snd_wavefront_t *dev, int assume_rom) + +{ + int i; + unsigned char rbuf[32], wbuf[32]; + unsigned int sc_real, sc_alias, sc_multi; + + /* check sample status */ + + if (snd_wavefront_cmd (dev, WFC_GET_NSAMPLES, rbuf, wbuf)) { + snd_printk ("cannot request sample count.\n"); + return -1; + } + + sc_real = sc_alias = sc_multi = dev->samples_used = 0; + + for (i = 0; i < WF_MAX_SAMPLE; i++) { + + wbuf[0] = i & 0x7f; + wbuf[1] = i >> 7; + + if (snd_wavefront_cmd (dev, WFC_IDENTIFY_SAMPLE_TYPE, rbuf, wbuf)) { + snd_printk("cannot identify sample " + "type of slot %d\n", i); + dev->sample_status[i] = WF_ST_EMPTY; + continue; + } + + dev->sample_status[i] = (WF_SLOT_FILLED|rbuf[0]); + + if (assume_rom) { + dev->sample_status[i] |= WF_SLOT_ROM; + } + + switch (rbuf[0] & WF_ST_MASK) { + case WF_ST_SAMPLE: + sc_real++; + break; + case WF_ST_MULTISAMPLE: + sc_multi++; + break; + case WF_ST_ALIAS: + sc_alias++; + break; + case WF_ST_EMPTY: + break; + + default: + snd_printk ("unknown sample type for " + "slot %d (0x%x)\n", + i, rbuf[0]); + } + + if (rbuf[0] != WF_ST_EMPTY) { + dev->samples_used++; + } + } + + snd_printk ("%d samples used (%d real, %d aliases, %d multi), " + "%d empty\n", dev->samples_used, sc_real, sc_alias, sc_multi, + WF_MAX_SAMPLE - dev->samples_used); + + + return (0); + +} + +static int +wavefront_get_patch_status (snd_wavefront_t *dev) + +{ + unsigned char patchbuf[WF_PATCH_BYTES]; + unsigned char patchnum[2]; + wavefront_patch *p; + int i, x, cnt, cnt2; + + for (i = 0; i < WF_MAX_PATCH; i++) { + patchnum[0] = i & 0x7f; + patchnum[1] = i >> 7; + + if ((x = snd_wavefront_cmd (dev, WFC_UPLOAD_PATCH, patchbuf, + patchnum)) == 0) { + + dev->patch_status[i] |= WF_SLOT_FILLED; + p = (wavefront_patch *) patchbuf; + dev->sample_status + [p->sample_number|(p->sample_msb<<7)] |= + WF_SLOT_USED; + + } else if (x == 3) { /* Bad patch number */ + dev->patch_status[i] = 0; + } else { + snd_printk ("upload patch " + "error 0x%x\n", x); + dev->patch_status[i] = 0; + return 1; + } + } + + /* program status has already filled in slot_used bits */ + + for (i = 0, cnt = 0, cnt2 = 0; i < WF_MAX_PATCH; i++) { + if (dev->patch_status[i] & WF_SLOT_FILLED) { + cnt++; + } + if (dev->patch_status[i] & WF_SLOT_USED) { + cnt2++; + } + + } + snd_printk ("%d patch slots filled, %d in use\n", cnt, cnt2); + + return (0); +} + +static int +wavefront_get_program_status (snd_wavefront_t *dev) + +{ + unsigned char progbuf[WF_PROGRAM_BYTES]; + wavefront_program prog; + unsigned char prognum; + int i, x, l, cnt; + + for (i = 0; i < WF_MAX_PROGRAM; i++) { + prognum = i; + + if ((x = snd_wavefront_cmd (dev, WFC_UPLOAD_PROGRAM, progbuf, + &prognum)) == 0) { + + dev->prog_status[i] |= WF_SLOT_USED; + + demunge_buf (progbuf, (unsigned char *) &prog, + WF_PROGRAM_BYTES); + + for (l = 0; l < WF_NUM_LAYERS; l++) { + if (prog.layer[l].mute) { + dev->patch_status + [prog.layer[l].patch_number] |= + WF_SLOT_USED; + } + } + } else if (x == 1) { /* Bad program number */ + dev->prog_status[i] = 0; + } else { + snd_printk ("upload program " + "error 0x%x\n", x); + dev->prog_status[i] = 0; + } + } + + for (i = 0, cnt = 0; i < WF_MAX_PROGRAM; i++) { + if (dev->prog_status[i]) { + cnt++; + } + } + + snd_printk ("%d programs slots in use\n", cnt); + + return (0); +} + +static int +wavefront_send_patch (snd_wavefront_t *dev, wavefront_patch_info *header) + +{ + unsigned char buf[WF_PATCH_BYTES+2]; + unsigned char *bptr; + + DPRINT (WF_DEBUG_LOAD_PATCH, "downloading patch %d\n", + header->number); + + dev->patch_status[header->number] |= WF_SLOT_FILLED; + + bptr = buf; + bptr = munge_int32 (header->number, buf, 2); + munge_buf ((unsigned char *)&header->hdr.p, bptr, WF_PATCH_BYTES); + + if (snd_wavefront_cmd (dev, WFC_DOWNLOAD_PATCH, NULL, buf)) { + snd_printk ("download patch failed\n"); + return -(EIO); + } + + return (0); +} + +static int +wavefront_send_program (snd_wavefront_t *dev, wavefront_patch_info *header) + +{ + unsigned char buf[WF_PROGRAM_BYTES+1]; + int i; + + DPRINT (WF_DEBUG_LOAD_PATCH, "downloading program %d\n", + header->number); + + dev->prog_status[header->number] = WF_SLOT_USED; + + /* XXX need to zero existing SLOT_USED bit for program_status[i] + where `i' is the program that's being (potentially) overwritten. + */ + + for (i = 0; i < WF_NUM_LAYERS; i++) { + if (header->hdr.pr.layer[i].mute) { + dev->patch_status[header->hdr.pr.layer[i].patch_number] |= + WF_SLOT_USED; + + /* XXX need to mark SLOT_USED for sample used by + patch_number, but this means we have to load it. Ick. + */ + } + } + + buf[0] = header->number; + munge_buf ((unsigned char *)&header->hdr.pr, &buf[1], WF_PROGRAM_BYTES); + + if (snd_wavefront_cmd (dev, WFC_DOWNLOAD_PROGRAM, NULL, buf)) { + snd_printk ("download patch failed\n"); + return -(EIO); + } + + return (0); +} + +static int +wavefront_freemem (snd_wavefront_t *dev) + +{ + char rbuf[8]; + + if (snd_wavefront_cmd (dev, WFC_REPORT_FREE_MEMORY, rbuf, NULL)) { + snd_printk ("can't get memory stats.\n"); + return -1; + } else { + return demunge_int32 (rbuf, 4); + } +} + +static int +wavefront_send_sample (snd_wavefront_t *dev, + wavefront_patch_info *header, + u16 __user *dataptr, + int data_is_unsigned) + +{ + /* samples are downloaded via a 16-bit wide i/o port + (you could think of it as 2 adjacent 8-bit wide ports + but its less efficient that way). therefore, all + the blocksizes and so forth listed in the documentation, + and used conventionally to refer to sample sizes, + which are given in 8-bit units (bytes), need to be + divided by 2. + */ + + u16 sample_short; + u32 length; + u16 __user *data_end = NULL; + unsigned int i; + const unsigned int max_blksize = 4096/2; + unsigned int written; + unsigned int blocksize; + int dma_ack; + int blocknum; + unsigned char sample_hdr[WF_SAMPLE_HDR_BYTES]; + unsigned char *shptr; + int skip = 0; + int initial_skip = 0; + + DPRINT (WF_DEBUG_LOAD_PATCH, "sample %sdownload for slot %d, " + "type %d, %d bytes from 0x%lx\n", + header->size ? "" : "header ", + header->number, header->subkey, + header->size, + (unsigned long) header->dataptr); + + if (header->number == WAVEFRONT_FIND_FREE_SAMPLE_SLOT) { + int x; + + if ((x = wavefront_find_free_sample (dev)) < 0) { + return -ENOMEM; + } + snd_printk ("unspecified sample => %d\n", x); + header->number = x; + } + + if (header->size) { + + /* XXX it's a debatable point whether or not RDONLY semantics + on the ROM samples should cover just the sample data or + the sample header. For now, it only covers the sample data, + so anyone is free at all times to rewrite sample headers. + + My reason for this is that we have the sample headers + available in the WFB file for General MIDI, and so these + can always be reset if needed. The sample data, however, + cannot be recovered without a complete reset and firmware + reload of the ICS2115, which is a very expensive operation. + + So, doing things this way allows us to honor the notion of + "RESETSAMPLES" reasonably cheaply. Note however, that this + is done purely at user level: there is no WFB parser in + this driver, and so a complete reset (back to General MIDI, + or theoretically some other configuration) is the + responsibility of the user level library. + + To try to do this in the kernel would be a little + crazy: we'd need 158K of kernel space just to hold + a copy of the patch/program/sample header data. + */ + + if (dev->rom_samples_rdonly) { + if (dev->sample_status[header->number] & WF_SLOT_ROM) { + snd_printk ("sample slot %d " + "write protected\n", + header->number); + return -EACCES; + } + } + + wavefront_delete_sample (dev, header->number); + } + + if (header->size) { + dev->freemem = wavefront_freemem (dev); + + if (dev->freemem < (int)header->size) { + snd_printk ("insufficient memory to " + "load %d byte sample.\n", + header->size); + return -ENOMEM; + } + + } + + skip = WF_GET_CHANNEL(&header->hdr.s); + + if (skip > 0 && header->hdr.s.SampleResolution != LINEAR_16BIT) { + snd_printk ("channel selection only " + "possible on 16-bit samples"); + return -(EINVAL); + } + + switch (skip) { + case 0: + initial_skip = 0; + skip = 1; + break; + case 1: + initial_skip = 0; + skip = 2; + break; + case 2: + initial_skip = 1; + skip = 2; + break; + case 3: + initial_skip = 2; + skip = 3; + break; + case 4: + initial_skip = 3; + skip = 4; + break; + case 5: + initial_skip = 4; + skip = 5; + break; + case 6: + initial_skip = 5; + skip = 6; + break; + } + + DPRINT (WF_DEBUG_LOAD_PATCH, "channel selection: %d => " + "initial skip = %d, skip = %d\n", + WF_GET_CHANNEL (&header->hdr.s), + initial_skip, skip); + + /* Be safe, and zero the "Unused" bits ... */ + + WF_SET_CHANNEL(&header->hdr.s, 0); + + /* adjust size for 16 bit samples by dividing by two. We always + send 16 bits per write, even for 8 bit samples, so the length + is always half the size of the sample data in bytes. + */ + + length = header->size / 2; + + /* the data we're sent has not been munged, and in fact, the + header we have to send isn't just a munged copy either. + so, build the sample header right here. + */ + + shptr = &sample_hdr[0]; + + shptr = munge_int32 (header->number, shptr, 2); + + if (header->size) { + shptr = munge_int32 (length, shptr, 4); + } + + /* Yes, a 4 byte result doesn't contain all of the offset bits, + but the offset only uses 24 bits. + */ + + shptr = munge_int32 (*((u32 *) &header->hdr.s.sampleStartOffset), + shptr, 4); + shptr = munge_int32 (*((u32 *) &header->hdr.s.loopStartOffset), + shptr, 4); + shptr = munge_int32 (*((u32 *) &header->hdr.s.loopEndOffset), + shptr, 4); + shptr = munge_int32 (*((u32 *) &header->hdr.s.sampleEndOffset), + shptr, 4); + + /* This one is truly weird. What kind of weirdo decided that in + a system dominated by 16 and 32 bit integers, they would use + a just 12 bits ? + */ + + shptr = munge_int32 (header->hdr.s.FrequencyBias, shptr, 3); + + /* Why is this nybblified, when the MSB is *always* zero ? + Anyway, we can't take address of bitfield, so make a + good-faith guess at where it starts. + */ + + shptr = munge_int32 (*(&header->hdr.s.FrequencyBias+1), + shptr, 2); + + if (snd_wavefront_cmd (dev, + header->size ? + WFC_DOWNLOAD_SAMPLE : WFC_DOWNLOAD_SAMPLE_HEADER, + NULL, sample_hdr)) { + snd_printk ("sample %sdownload refused.\n", + header->size ? "" : "header "); + return -(EIO); + } + + if (header->size == 0) { + goto sent; /* Sorry. Just had to have one somewhere */ + } + + data_end = dataptr + length; + + /* Do any initial skip over an unused channel's data */ + + dataptr += initial_skip; + + for (written = 0, blocknum = 0; + written < length; written += max_blksize, blocknum++) { + + if ((length - written) > max_blksize) { + blocksize = max_blksize; + } else { + /* round to nearest 16-byte value */ + blocksize = ((length-written+7)&~0x7); + } + + if (snd_wavefront_cmd (dev, WFC_DOWNLOAD_BLOCK, NULL, NULL)) { + snd_printk ("download block " + "request refused.\n"); + return -(EIO); + } + + for (i = 0; i < blocksize; i++) { + + if (dataptr < data_end) { + + __get_user (sample_short, dataptr); + dataptr += skip; + + if (data_is_unsigned) { /* GUS ? */ + + if (WF_SAMPLE_IS_8BIT(&header->hdr.s)) { + + /* 8 bit sample + resolution, sign + extend both bytes. + */ + + ((unsigned char*) + &sample_short)[0] += 0x7f; + ((unsigned char*) + &sample_short)[1] += 0x7f; + + } else { + + /* 16 bit sample + resolution, sign + extend the MSB. + */ + + sample_short += 0x7fff; + } + } + + } else { + + /* In padding section of final block: + + Don't fetch unsupplied data from + user space, just continue with + whatever the final value was. + */ + } + + if (i < blocksize - 1) { + outw (sample_short, dev->block_port); + } else { + outw (sample_short, dev->last_block_port); + } + } + + /* Get "DMA page acknowledge", even though its really + nothing to do with DMA at all. + */ + + if ((dma_ack = wavefront_read (dev)) != WF_DMA_ACK) { + if (dma_ack == -1) { + snd_printk ("upload sample " + "DMA ack timeout\n"); + return -(EIO); + } else { + snd_printk ("upload sample " + "DMA ack error 0x%x\n", + dma_ack); + return -(EIO); + } + } + } + + dev->sample_status[header->number] = (WF_SLOT_FILLED|WF_ST_SAMPLE); + + /* Note, label is here because sending the sample header shouldn't + alter the sample_status info at all. + */ + + sent: + return (0); +} + +static int +wavefront_send_alias (snd_wavefront_t *dev, wavefront_patch_info *header) + +{ + unsigned char alias_hdr[WF_ALIAS_BYTES]; + + DPRINT (WF_DEBUG_LOAD_PATCH, "download alias, %d is " + "alias for %d\n", + header->number, + header->hdr.a.OriginalSample); + + munge_int32 (header->number, &alias_hdr[0], 2); + munge_int32 (header->hdr.a.OriginalSample, &alias_hdr[2], 2); + munge_int32 (*((unsigned int *)&header->hdr.a.sampleStartOffset), + &alias_hdr[4], 4); + munge_int32 (*((unsigned int *)&header->hdr.a.loopStartOffset), + &alias_hdr[8], 4); + munge_int32 (*((unsigned int *)&header->hdr.a.loopEndOffset), + &alias_hdr[12], 4); + munge_int32 (*((unsigned int *)&header->hdr.a.sampleEndOffset), + &alias_hdr[16], 4); + munge_int32 (header->hdr.a.FrequencyBias, &alias_hdr[20], 3); + munge_int32 (*(&header->hdr.a.FrequencyBias+1), &alias_hdr[23], 2); + + if (snd_wavefront_cmd (dev, WFC_DOWNLOAD_SAMPLE_ALIAS, NULL, alias_hdr)) { + snd_printk ("download alias failed.\n"); + return -(EIO); + } + + dev->sample_status[header->number] = (WF_SLOT_FILLED|WF_ST_ALIAS); + + return (0); +} + +static int +wavefront_send_multisample (snd_wavefront_t *dev, wavefront_patch_info *header) +{ + int i; + int num_samples; + unsigned char *msample_hdr; + + msample_hdr = kmalloc(sizeof(WF_MSAMPLE_BYTES), GFP_KERNEL); + if (! msample_hdr) + return -ENOMEM; + + munge_int32 (header->number, &msample_hdr[0], 2); + + /* You'll recall at this point that the "number of samples" value + in a wavefront_multisample struct is actually the log2 of the + real number of samples. + */ + + num_samples = (1<<(header->hdr.ms.NumberOfSamples&7)); + msample_hdr[2] = (unsigned char) header->hdr.ms.NumberOfSamples; + + DPRINT (WF_DEBUG_LOAD_PATCH, "multi %d with %d=%d samples\n", + header->number, + header->hdr.ms.NumberOfSamples, + num_samples); + + for (i = 0; i < num_samples; i++) { + DPRINT(WF_DEBUG_LOAD_PATCH|WF_DEBUG_DATA, "sample[%d] = %d\n", + i, header->hdr.ms.SampleNumber[i]); + munge_int32 (header->hdr.ms.SampleNumber[i], + &msample_hdr[3+(i*2)], 2); + } + + /* Need a hack here to pass in the number of bytes + to be written to the synth. This is ugly, and perhaps + one day, I'll fix it. + */ + + if (snd_wavefront_cmd (dev, WFC_DOWNLOAD_MULTISAMPLE, + (unsigned char *) (long) ((num_samples*2)+3), + msample_hdr)) { + snd_printk ("download of multisample failed.\n"); + kfree(msample_hdr); + return -(EIO); + } + + dev->sample_status[header->number] = (WF_SLOT_FILLED|WF_ST_MULTISAMPLE); + + kfree(msample_hdr); + return (0); +} + +static int +wavefront_fetch_multisample (snd_wavefront_t *dev, + wavefront_patch_info *header) +{ + int i; + unsigned char log_ns[1]; + unsigned char number[2]; + int num_samples; + + munge_int32 (header->number, number, 2); + + if (snd_wavefront_cmd (dev, WFC_UPLOAD_MULTISAMPLE, log_ns, number)) { + snd_printk ("upload multisample failed.\n"); + return -(EIO); + } + + DPRINT (WF_DEBUG_DATA, "msample %d has %d samples\n", + header->number, log_ns[0]); + + header->hdr.ms.NumberOfSamples = log_ns[0]; + + /* get the number of samples ... */ + + num_samples = (1 << log_ns[0]); + + for (i = 0; i < num_samples; i++) { + char d[2]; + int val; + + if ((val = wavefront_read (dev)) == -1) { + snd_printk ("upload multisample failed " + "during sample loop.\n"); + return -(EIO); + } + d[0] = val; + + if ((val = wavefront_read (dev)) == -1) { + snd_printk ("upload multisample failed " + "during sample loop.\n"); + return -(EIO); + } + d[1] = val; + + header->hdr.ms.SampleNumber[i] = + demunge_int32 ((unsigned char *) d, 2); + + DPRINT (WF_DEBUG_DATA, "msample sample[%d] = %d\n", + i, header->hdr.ms.SampleNumber[i]); + } + + return (0); +} + + +static int +wavefront_send_drum (snd_wavefront_t *dev, wavefront_patch_info *header) + +{ + unsigned char drumbuf[WF_DRUM_BYTES]; + wavefront_drum *drum = &header->hdr.d; + int i; + + DPRINT (WF_DEBUG_LOAD_PATCH, "downloading edrum for MIDI " + "note %d, patch = %d\n", + header->number, drum->PatchNumber); + + drumbuf[0] = header->number & 0x7f; + + for (i = 0; i < 4; i++) { + munge_int32 (((unsigned char *)drum)[i], &drumbuf[1+(i*2)], 2); + } + + if (snd_wavefront_cmd (dev, WFC_DOWNLOAD_EDRUM_PROGRAM, NULL, drumbuf)) { + snd_printk ("download drum failed.\n"); + return -(EIO); + } + + return (0); +} + +static int +wavefront_find_free_sample (snd_wavefront_t *dev) + +{ + int i; + + for (i = 0; i < WF_MAX_SAMPLE; i++) { + if (!(dev->sample_status[i] & WF_SLOT_FILLED)) { + return i; + } + } + snd_printk ("no free sample slots!\n"); + return -1; +} + +#if 0 +static int +wavefront_find_free_patch (snd_wavefront_t *dev) + +{ + int i; + + for (i = 0; i < WF_MAX_PATCH; i++) { + if (!(dev->patch_status[i] & WF_SLOT_FILLED)) { + return i; + } + } + snd_printk ("no free patch slots!\n"); + return -1; +} +#endif + +static int +wavefront_load_patch (snd_wavefront_t *dev, const char __user *addr) +{ + wavefront_patch_info *header; + int err; + + header = kmalloc(sizeof(*header), GFP_KERNEL); + if (! header) + return -ENOMEM; + + if (copy_from_user (header, addr, sizeof(wavefront_patch_info) - + sizeof(wavefront_any))) { + snd_printk ("bad address for load patch.\n"); + err = -EFAULT; + goto __error; + } + + DPRINT (WF_DEBUG_LOAD_PATCH, "download " + "Sample type: %d " + "Sample number: %d " + "Sample size: %d\n", + header->subkey, + header->number, + header->size); + + switch (header->subkey) { + case WF_ST_SAMPLE: /* sample or sample_header, based on patch->size */ + + if (copy_from_user (&header->hdr.s, header->hdrptr, + sizeof (wavefront_sample))) { + err = -EFAULT; + break; + } + + err = wavefront_send_sample (dev, header, header->dataptr, 0); + break; + + case WF_ST_MULTISAMPLE: + + if (copy_from_user (&header->hdr.s, header->hdrptr, + sizeof (wavefront_multisample))) { + err = -EFAULT; + break; + } + + err = wavefront_send_multisample (dev, header); + break; + + case WF_ST_ALIAS: + + if (copy_from_user (&header->hdr.a, header->hdrptr, + sizeof (wavefront_alias))) { + err = -EFAULT; + break; + } + + err = wavefront_send_alias (dev, header); + break; + + case WF_ST_DRUM: + if (copy_from_user (&header->hdr.d, header->hdrptr, + sizeof (wavefront_drum))) { + err = -EFAULT; + break; + } + + err = wavefront_send_drum (dev, header); + break; + + case WF_ST_PATCH: + if (copy_from_user (&header->hdr.p, header->hdrptr, + sizeof (wavefront_patch))) { + err = -EFAULT; + break; + } + + err = wavefront_send_patch (dev, header); + break; + + case WF_ST_PROGRAM: + if (copy_from_user (&header->hdr.pr, header->hdrptr, + sizeof (wavefront_program))) { + err = -EFAULT; + break; + } + + err = wavefront_send_program (dev, header); + break; + + default: + snd_printk ("unknown patch type %d.\n", + header->subkey); + err = -EINVAL; + break; + } + + __error: + kfree(header); + return err; +} + +/*********************************************************************** +WaveFront: hardware-dependent interface +***********************************************************************/ + +static void +process_sample_hdr (u8 *buf) + +{ + wavefront_sample s; + u8 *ptr; + + ptr = buf; + + /* The board doesn't send us an exact copy of a "wavefront_sample" + in response to an Upload Sample Header command. Instead, we + have to convert the data format back into our data structure, + just as in the Download Sample command, where we have to do + something very similar in the reverse direction. + */ + + *((u32 *) &s.sampleStartOffset) = demunge_int32 (ptr, 4); ptr += 4; + *((u32 *) &s.loopStartOffset) = demunge_int32 (ptr, 4); ptr += 4; + *((u32 *) &s.loopEndOffset) = demunge_int32 (ptr, 4); ptr += 4; + *((u32 *) &s.sampleEndOffset) = demunge_int32 (ptr, 4); ptr += 4; + *((u32 *) &s.FrequencyBias) = demunge_int32 (ptr, 3); ptr += 3; + + s.SampleResolution = *ptr & 0x3; + s.Loop = *ptr & 0x8; + s.Bidirectional = *ptr & 0x10; + s.Reverse = *ptr & 0x40; + + /* Now copy it back to where it came from */ + + memcpy (buf, (unsigned char *) &s, sizeof (wavefront_sample)); +} + +static int +wavefront_synth_control (snd_wavefront_card_t *acard, + wavefront_control *wc) + +{ + snd_wavefront_t *dev = &acard->wavefront; + unsigned char patchnumbuf[2]; + int i; + + DPRINT (WF_DEBUG_CMD, "synth control with " + "cmd 0x%x\n", wc->cmd); + + /* Pre-handling of or for various commands */ + + switch (wc->cmd) { + + case WFC_DISABLE_INTERRUPTS: + snd_printk ("interrupts disabled.\n"); + outb (0x80|0x20, dev->control_port); + dev->interrupts_are_midi = 1; + return 0; + + case WFC_ENABLE_INTERRUPTS: + snd_printk ("interrupts enabled.\n"); + outb (0x80|0x40|0x20, dev->control_port); + dev->interrupts_are_midi = 1; + return 0; + + case WFC_INTERRUPT_STATUS: + wc->rbuf[0] = dev->interrupts_are_midi; + return 0; + + case WFC_ROMSAMPLES_RDONLY: + dev->rom_samples_rdonly = wc->wbuf[0]; + wc->status = 0; + return 0; + + case WFC_IDENTIFY_SLOT_TYPE: + i = wc->wbuf[0] | (wc->wbuf[1] << 7); + if (i <0 || i >= WF_MAX_SAMPLE) { + snd_printk ("invalid slot ID %d\n", + i); + wc->status = EINVAL; + return -EINVAL; + } + wc->rbuf[0] = dev->sample_status[i]; + wc->status = 0; + return 0; + + case WFC_DEBUG_DRIVER: + dev->debug = wc->wbuf[0]; + snd_printk ("debug = 0x%x\n", dev->debug); + return 0; + + case WFC_UPLOAD_PATCH: + munge_int32 (*((u32 *) wc->wbuf), patchnumbuf, 2); + memcpy (wc->wbuf, patchnumbuf, 2); + break; + + case WFC_UPLOAD_MULTISAMPLE: + /* multisamples have to be handled differently, and + cannot be dealt with properly by snd_wavefront_cmd() alone. + */ + wc->status = wavefront_fetch_multisample + (dev, (wavefront_patch_info *) wc->rbuf); + return 0; + + case WFC_UPLOAD_SAMPLE_ALIAS: + snd_printk ("support for sample alias upload " + "being considered.\n"); + wc->status = EINVAL; + return -EINVAL; + } + + wc->status = snd_wavefront_cmd (dev, wc->cmd, wc->rbuf, wc->wbuf); + + /* Post-handling of certain commands. + + In particular, if the command was an upload, demunge the data + so that the user-level doesn't have to think about it. + */ + + if (wc->status == 0) { + switch (wc->cmd) { + /* intercept any freemem requests so that we know + we are always current with the user-level view + of things. + */ + + case WFC_REPORT_FREE_MEMORY: + dev->freemem = demunge_int32 (wc->rbuf, 4); + break; + + case WFC_UPLOAD_PATCH: + demunge_buf (wc->rbuf, wc->rbuf, WF_PATCH_BYTES); + break; + + case WFC_UPLOAD_PROGRAM: + demunge_buf (wc->rbuf, wc->rbuf, WF_PROGRAM_BYTES); + break; + + case WFC_UPLOAD_EDRUM_PROGRAM: + demunge_buf (wc->rbuf, wc->rbuf, WF_DRUM_BYTES - 1); + break; + + case WFC_UPLOAD_SAMPLE_HEADER: + process_sample_hdr (wc->rbuf); + break; + + case WFC_UPLOAD_SAMPLE_ALIAS: + snd_printk ("support for " + "sample aliases still " + "being considered.\n"); + break; + + case WFC_VMIDI_OFF: + snd_wavefront_midi_disable_virtual (acard); + break; + + case WFC_VMIDI_ON: + snd_wavefront_midi_enable_virtual (acard); + break; + } + } + + return 0; +} + +int +snd_wavefront_synth_open (snd_hwdep_t *hw, struct file *file) + +{ + if (!try_module_get(hw->card->module)) + return -EFAULT; + file->private_data = hw; + return 0; +} + +int +snd_wavefront_synth_release (snd_hwdep_t *hw, struct file *file) + +{ + module_put(hw->card->module); + return 0; +} + +int +snd_wavefront_synth_ioctl (snd_hwdep_t *hw, struct file *file, + unsigned int cmd, unsigned long arg) + +{ + snd_card_t *card; + snd_wavefront_t *dev; + snd_wavefront_card_t *acard; + wavefront_control *wc; + void __user *argp = (void __user *)arg; + int err; + + card = (snd_card_t *) hw->card; + + snd_assert(card != NULL, return -ENODEV); + + snd_assert(card->private_data != NULL, return -ENODEV); + + acard = card->private_data; + dev = &acard->wavefront; + + switch (cmd) { + case WFCTL_LOAD_SPP: + if (wavefront_load_patch (dev, argp) != 0) { + return -EIO; + } + break; + + case WFCTL_WFCMD: + wc = kmalloc(sizeof(*wc), GFP_KERNEL); + if (! wc) + return -ENOMEM; + if (copy_from_user (wc, argp, sizeof (*wc))) + err = -EFAULT; + else if (wavefront_synth_control (acard, wc) < 0) + err = -EIO; + else if (copy_to_user (argp, wc, sizeof (*wc))) + err = -EFAULT; + else + err = 0; + kfree(wc); + return err; + + default: + return -EINVAL; + } + + return 0; +} + + +/***********************************************************************/ +/* WaveFront: interface for card-level wavefront module */ +/***********************************************************************/ + +void +snd_wavefront_internal_interrupt (snd_wavefront_card_t *card) +{ + snd_wavefront_t *dev = &card->wavefront; + + /* + Some comments on interrupts. I attempted a version of this + driver that used interrupts throughout the code instead of + doing busy and/or sleep-waiting. Alas, it appears that once + the Motorola firmware is downloaded, the card *never* + generates an RX interrupt. These are successfully generated + during firmware loading, and after that wavefront_status() + reports that an interrupt is pending on the card from time + to time, but it never seems to be delivered to this + driver. Note also that wavefront_status() continues to + report that RX interrupts are enabled, suggesting that I + didn't goof up and disable them by mistake. + + Thus, I stepped back to a prior version of + wavefront_wait(), the only place where this really + matters. Its sad, but I've looked through the code to check + on things, and I really feel certain that the Motorola + firmware prevents RX-ready interrupts. + */ + + if ((wavefront_status(dev) & (STAT_INTR_READ|STAT_INTR_WRITE)) == 0) { + return; + } + + spin_lock(&dev->irq_lock); + dev->irq_ok = 1; + dev->irq_cnt++; + spin_unlock(&dev->irq_lock); + wake_up(&dev->interrupt_sleeper); +} + +/* STATUS REGISTER + +0 Host Rx Interrupt Enable (1=Enabled) +1 Host Rx Register Full (1=Full) +2 Host Rx Interrupt Pending (1=Interrupt) +3 Unused +4 Host Tx Interrupt (1=Enabled) +5 Host Tx Register empty (1=Empty) +6 Host Tx Interrupt Pending (1=Interrupt) +7 Unused +*/ + +static int __init +snd_wavefront_interrupt_bits (int irq) + +{ + int bits; + + switch (irq) { + case 9: + bits = 0x00; + break; + case 5: + bits = 0x08; + break; + case 12: + bits = 0x10; + break; + case 15: + bits = 0x18; + break; + + default: + snd_printk ("invalid IRQ %d\n", irq); + bits = -1; + } + + return bits; +} + +static void __init +wavefront_should_cause_interrupt (snd_wavefront_t *dev, + int val, int port, int timeout) + +{ + wait_queue_t wait; + + init_waitqueue_entry(&wait, current); + spin_lock_irq(&dev->irq_lock); + add_wait_queue(&dev->interrupt_sleeper, &wait); + dev->irq_ok = 0; + outb (val,port); + spin_unlock_irq(&dev->irq_lock); + while (1) { + set_current_state(TASK_INTERRUPTIBLE); + if ((timeout = schedule_timeout(timeout)) == 0) + return; + if (dev->irq_ok) + return; + } +} + +static int __init +wavefront_reset_to_cleanliness (snd_wavefront_t *dev) + +{ + int bits; + int hwv[2]; + + /* IRQ already checked */ + + bits = snd_wavefront_interrupt_bits (dev->irq); + + /* try reset of port */ + + outb (0x0, dev->control_port); + + /* At this point, the board is in reset, and the H/W initialization + register is accessed at the same address as the data port. + + Bit 7 - Enable IRQ Driver + 0 - Tri-state the Wave-Board drivers for the PC Bus IRQs + 1 - Enable IRQ selected by bits 5:3 to be driven onto the PC Bus. + + Bit 6 - MIDI Interface Select + + 0 - Use the MIDI Input from the 26-pin WaveBlaster + compatible header as the serial MIDI source + 1 - Use the MIDI Input from the 9-pin D connector as the + serial MIDI source. + + Bits 5:3 - IRQ Selection + 0 0 0 - IRQ 2/9 + 0 0 1 - IRQ 5 + 0 1 0 - IRQ 12 + 0 1 1 - IRQ 15 + 1 0 0 - Reserved + 1 0 1 - Reserved + 1 1 0 - Reserved + 1 1 1 - Reserved + + Bits 2:1 - Reserved + Bit 0 - Disable Boot ROM + 0 - memory accesses to 03FC30-03FFFFH utilize the internal Boot ROM + 1 - memory accesses to 03FC30-03FFFFH are directed to external + storage. + + */ + + /* configure hardware: IRQ, enable interrupts, + plus external 9-pin MIDI interface selected + */ + + outb (0x80 | 0x40 | bits, dev->data_port); + + /* CONTROL REGISTER + + 0 Host Rx Interrupt Enable (1=Enabled) 0x1 + 1 Unused 0x2 + 2 Unused 0x4 + 3 Unused 0x8 + 4 Host Tx Interrupt Enable 0x10 + 5 Mute (0=Mute; 1=Play) 0x20 + 6 Master Interrupt Enable (1=Enabled) 0x40 + 7 Master Reset (0=Reset; 1=Run) 0x80 + + Take us out of reset, mute output, master + TX + RX interrupts on. + + We'll get an interrupt presumably to tell us that the TX + register is clear. + */ + + wavefront_should_cause_interrupt(dev, 0x80|0x40|0x10|0x1, + dev->control_port, + (reset_time*HZ)/100); + + /* Note: data port is now the data port, not the h/w initialization + port. + */ + + if (!dev->irq_ok) { + snd_printk ("intr not received after h/w un-reset.\n"); + goto gone_bad; + } + + /* Note: data port is now the data port, not the h/w initialization + port. + + At this point, only "HW VERSION" or "DOWNLOAD OS" commands + will work. So, issue one of them, and wait for TX + interrupt. This can take a *long* time after a cold boot, + while the ISC ROM does its RAM test. The SDK says up to 4 + seconds - with 12MB of RAM on a Tropez+, it takes a lot + longer than that (~16secs). Note that the card understands + the difference between a warm and a cold boot, so + subsequent ISC2115 reboots (say, caused by module + reloading) will get through this much faster. + + XXX Interesting question: why is no RX interrupt received first ? + */ + + wavefront_should_cause_interrupt(dev, WFC_HARDWARE_VERSION, + dev->data_port, ramcheck_time*HZ); + + if (!dev->irq_ok) { + snd_printk ("post-RAM-check interrupt not received.\n"); + goto gone_bad; + } + + if (!wavefront_wait (dev, STAT_CAN_READ)) { + snd_printk ("no response to HW version cmd.\n"); + goto gone_bad; + } + + if ((hwv[0] = wavefront_read (dev)) == -1) { + snd_printk ("board not responding correctly.\n"); + goto gone_bad; + } + + if (hwv[0] == 0xFF) { /* NAK */ + + /* Board's RAM test failed. Try to read error code, + and tell us about it either way. + */ + + if ((hwv[0] = wavefront_read (dev)) == -1) { + snd_printk ("on-board RAM test failed " + "(bad error code).\n"); + } else { + snd_printk ("on-board RAM test failed " + "(error code: 0x%x).\n", + hwv[0]); + } + goto gone_bad; + } + + /* We're OK, just get the next byte of the HW version response */ + + if ((hwv[1] = wavefront_read (dev)) == -1) { + snd_printk ("incorrect h/w response.\n"); + goto gone_bad; + } + + snd_printk ("hardware version %d.%d\n", + hwv[0], hwv[1]); + + return 0; + + + gone_bad: + return (1); +} + +#include <linux/fs.h> +#include <linux/mm.h> +#include <linux/slab.h> +#include <linux/unistd.h> +#include <linux/syscalls.h> +#include <asm/uaccess.h> + + +static int __init +wavefront_download_firmware (snd_wavefront_t *dev, char *path) + +{ + unsigned char section[WF_SECTION_MAX]; + signed char section_length; /* yes, just a char; max value is WF_SECTION_MAX */ + int section_cnt_downloaded = 0; + int fd; + int c; + int i; + mm_segment_t fs; + + /* This tries to be a bit cleverer than the stuff Alan Cox did for + the generic sound firmware, in that it actually knows + something about the structure of the Motorola firmware. In + particular, it uses a version that has been stripped of the + 20K of useless header information, and had section lengths + added, making it possible to load the entire OS without any + [kv]malloc() activity, since the longest entity we ever read is + 42 bytes (well, WF_SECTION_MAX) long. + */ + + fs = get_fs(); + set_fs (get_ds()); + + if ((fd = sys_open ((char __user *) path, 0, 0)) < 0) { + snd_printk ("Unable to load \"%s\".\n", + path); + return 1; + } + + while (1) { + int x; + + if ((x = sys_read (fd, (char __user *) §ion_length, sizeof (section_length))) != + sizeof (section_length)) { + snd_printk ("firmware read error.\n"); + goto failure; + } + + if (section_length == 0) { + break; + } + + if (section_length < 0 || section_length > WF_SECTION_MAX) { + snd_printk ("invalid firmware section length %d\n", + section_length); + goto failure; + } + + if (sys_read (fd, (char __user *) section, section_length) != section_length) { + snd_printk ("firmware section " + "read error.\n"); + goto failure; + } + + /* Send command */ + + if (wavefront_write (dev, WFC_DOWNLOAD_OS)) { + goto failure; + } + + for (i = 0; i < section_length; i++) { + if (wavefront_write (dev, section[i])) { + goto failure; + } + } + + /* get ACK */ + + if (wavefront_wait (dev, STAT_CAN_READ)) { + + if ((c = inb (dev->data_port)) != WF_ACK) { + + snd_printk ("download " + "of section #%d not " + "acknowledged, ack = 0x%x\n", + section_cnt_downloaded + 1, c); + goto failure; + + } + + } else { + snd_printk ("time out for firmware ACK.\n"); + goto failure; + } + + } + + sys_close (fd); + set_fs (fs); + return 0; + + failure: + sys_close (fd); + set_fs (fs); + snd_printk ("firmware download failed!!!\n"); + return 1; +} + + +static int __init +wavefront_do_reset (snd_wavefront_t *dev) + +{ + char voices[1]; + + if (wavefront_reset_to_cleanliness (dev)) { + snd_printk ("hw reset failed.\n"); + goto gone_bad; + } + + if (dev->israw) { + if (wavefront_download_firmware (dev, ospath)) { + goto gone_bad; + } + + dev->israw = 0; + + /* Wait for the OS to get running. The protocol for + this is non-obvious, and was determined by + using port-IO tracing in DOSemu and some + experimentation here. + + Rather than using timed waits, use interrupts creatively. + */ + + wavefront_should_cause_interrupt (dev, WFC_NOOP, + dev->data_port, + (osrun_time*HZ)); + + if (!dev->irq_ok) { + snd_printk ("no post-OS interrupt.\n"); + goto gone_bad; + } + + /* Now, do it again ! */ + + wavefront_should_cause_interrupt (dev, WFC_NOOP, + dev->data_port, (10*HZ)); + + if (!dev->irq_ok) { + snd_printk ("no post-OS interrupt(2).\n"); + goto gone_bad; + } + + /* OK, no (RX/TX) interrupts any more, but leave mute + in effect. + */ + + outb (0x80|0x40, dev->control_port); + } + + /* SETUPSND.EXE asks for sample memory config here, but since i + have no idea how to interpret the result, we'll forget + about it. + */ + + if ((dev->freemem = wavefront_freemem (dev)) < 0) { + goto gone_bad; + } + + snd_printk ("available DRAM %dk\n", dev->freemem / 1024); + + if (wavefront_write (dev, 0xf0) || + wavefront_write (dev, 1) || + (wavefront_read (dev) < 0)) { + dev->debug = 0; + snd_printk ("MPU emulation mode not set.\n"); + goto gone_bad; + } + + voices[0] = 32; + + if (snd_wavefront_cmd (dev, WFC_SET_NVOICES, NULL, voices)) { + snd_printk ("cannot set number of voices to 32.\n"); + goto gone_bad; + } + + + return 0; + + gone_bad: + /* reset that sucker so that it doesn't bother us. */ + + outb (0x0, dev->control_port); + dev->interrupts_are_midi = 0; + return 1; +} + +int __init +snd_wavefront_start (snd_wavefront_t *dev) + +{ + int samples_are_from_rom; + + /* IMPORTANT: assumes that snd_wavefront_detect() and/or + wavefront_reset_to_cleanliness() has already been called + */ + + if (dev->israw) { + samples_are_from_rom = 1; + } else { + /* XXX is this always true ? */ + samples_are_from_rom = 0; + } + + if (dev->israw || fx_raw) { + if (wavefront_do_reset (dev)) { + return -1; + } + } + /* Check for FX device, present only on Tropez+ */ + + dev->has_fx = (snd_wavefront_fx_detect (dev) == 0); + + if (dev->has_fx && fx_raw) { + snd_wavefront_fx_start (dev); + } + + wavefront_get_sample_status (dev, samples_are_from_rom); + wavefront_get_program_status (dev); + wavefront_get_patch_status (dev); + + /* Start normal operation: unreset, master interrupt enabled, no mute + */ + + outb (0x80|0x40|0x20, dev->control_port); + + return (0); +} + +int __init +snd_wavefront_detect (snd_wavefront_card_t *card) + +{ + unsigned char rbuf[4], wbuf[4]; + snd_wavefront_t *dev = &card->wavefront; + + /* returns zero if a WaveFront card is successfully detected. + negative otherwise. + */ + + dev->israw = 0; + dev->has_fx = 0; + dev->debug = debug_default; + dev->interrupts_are_midi = 0; + dev->irq_cnt = 0; + dev->rom_samples_rdonly = 1; + + if (snd_wavefront_cmd (dev, WFC_FIRMWARE_VERSION, rbuf, wbuf) == 0) { + + dev->fw_version[0] = rbuf[0]; + dev->fw_version[1] = rbuf[1]; + + snd_printk ("firmware %d.%d already loaded.\n", + rbuf[0], rbuf[1]); + + /* check that a command actually works */ + + if (snd_wavefront_cmd (dev, WFC_HARDWARE_VERSION, + rbuf, wbuf) == 0) { + dev->hw_version[0] = rbuf[0]; + dev->hw_version[1] = rbuf[1]; + } else { + snd_printk ("not raw, but no " + "hardware version!\n"); + return -1; + } + + if (!wf_raw) { + return 0; + } else { + snd_printk ("reloading firmware as you requested.\n"); + dev->israw = 1; + } + + } else { + + dev->israw = 1; + snd_printk ("no response to firmware probe, assume raw.\n"); + + } + + return 0; +} |
