patch-2.1.27 linux/drivers/net/sm_sbc.h
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- Lines: 483
- Date:
Wed Dec 31 16:00:00 1969
- Orig file:
v2.1.26/linux/drivers/net/sm_sbc.h
- Orig date:
Fri Dec 20 03:16:51 1996
diff -u --recursive --new-file v2.1.26/linux/drivers/net/sm_sbc.h linux/drivers/net/sm_sbc.h
@@ -1,482 +0,0 @@
-/*****************************************************************************/
-
-/*
- * sm_sbc.h -- soundcard radio modem driver soundblaster hardware driver
- *
- * Copyright (C) 1996 Thomas Sailer (sailer@ife.ee.ethz.ch)
- *
- * 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 2 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, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * Please note that the GPL allows you to use the driver, NOT the radio.
- * In order to use the radio, you need a license from the communications
- * authority of your country.
- *
- */
-
-/* --------------------------------------------------------------------- */
-
-struct sc_state_sbc {
- unsigned char revhi, revlo;
- unsigned char fmt[2];
- unsigned int dmabuflen;
- unsigned char *dmabuf;
- unsigned char dmabufidx;
- unsigned char ptt;
-};
-
-#define SCSTATE ((struct sc_state_sbc *)(&sm->hw))
-
-/* --------------------------------------------------------------------- */
-/*
- * the sbc converter's registers
- */
-#define DSP_RESET(iobase) (iobase+0x6)
-#define DSP_READ_DATA(iobase) (iobase+0xa)
-#define DSP_WRITE_DATA(iobase) (iobase+0xc)
-#define DSP_WRITE_STATUS(iobase) (iobase+0xc)
-#define DSP_DATA_AVAIL(iobase) (iobase+0xe)
-#define DSP_MIXER_ADDR(iobase) (iobase+0x4)
-#define DSP_MIXER_DATA(iobase) (iobase+0x5)
-#define SBC_EXTENT 16
-
-/* --------------------------------------------------------------------- */
-/*
- * SBC commands
- */
-#define SBC_OUTPUT 0x14
-#define SBC_INPUT 0x24
-#define SBC_BLOCKSIZE 0x48
-#define SBC_HI_OUTPUT 0x91
-#define SBC_HI_INPUT 0x99
-#define SBC_LO_OUTPUT_AUTOINIT 0x1c
-#define SBC_LO_INPUT_AUTOINIT 0x2c
-#define SBC_HI_OUTPUT_AUTOINIT 0x90
-#define SBC_HI_INPUT_AUTOINIT 0x98
-#define SBC_IMMED_INT 0xf2
-#define SBC_GET_REVISION 0xe1
-#define ESS_GET_REVISION 0xe7
-#define SBC_SPEAKER_ON 0xd1
-#define SBC_SPEAKER_OFF 0xd3
-#define SBC_DMA_ON 0xd0
-#define SBC_DMA_OFF 0xd4
-#define SBC_SAMPLE_RATE 0x40
-#define SBC_MONO_8BIT 0xa0
-#define SBC_MONO_16BIT 0xa4
-#define SBC_STEREO_8BIT 0xa8
-#define SBC_STEREO_16BIT 0xac
-
-#define SBC4_OUT8_AI 0xc6
-#define SBC4_IN8_AI 0xce
-#define SBC4_MODE_UNS_MONO 0x00
-
-/* --------------------------------------------------------------------- */
-
-static int inline reset_dsp(struct device *dev)
-{
- int i;
-
- outb(1, DSP_RESET(dev->base_addr));
- for (i = 0; i < 0x100; i++)
- SLOW_DOWN_IO;
- outb(0, DSP_RESET(dev->base_addr));
- for (i = 0; i < 0xffff; i++)
- if (inb(DSP_DATA_AVAIL(dev->base_addr)) & 0x80)
- if (inb(DSP_READ_DATA(dev->base_addr)) == 0xaa)
- return 1;
- return 0;
-}
-
-/* --------------------------------------------------------------------- */
-
-static void inline write_dsp(struct device *dev, unsigned char data)
-{
- int i;
-
- for (i = 0; i < 0xffff; i++)
- if (!(inb(DSP_WRITE_STATUS(dev->base_addr)) & 0x80)) {
- outb(data, DSP_WRITE_DATA(dev->base_addr));
- return;
- }
-}
-
-/* --------------------------------------------------------------------- */
-
-static int inline read_dsp(struct device *dev, unsigned char *data)
-{
- int i;
-
- if (!data)
- return 0;
- for (i = 0; i < 0xffff; i++)
- if (inb(DSP_DATA_AVAIL(dev->base_addr)) & 0x80) {
- *data = inb(DSP_READ_DATA(dev->base_addr));
- return 1;
- }
- return 0;
-}
-
-/* --------------------------------------------------------------------- */
-
-static void inline sbc_int_ack(struct device *dev)
-{
- inb(DSP_DATA_AVAIL(dev->base_addr));
-}
-
-/* --------------------------------------------------------------------- */
-
-static void setup_dma_dsp(struct device *dev, struct sm_state *sm, int send)
-{
- unsigned long flags;
- static const unsigned char sbcmode[2][2] = {
- { SBC_LO_INPUT_AUTOINIT, SBC_LO_OUTPUT_AUTOINIT },
- { SBC_HI_INPUT_AUTOINIT, SBC_HI_OUTPUT_AUTOINIT }
- };
- static const unsigned char sbc4mode[2] = { SBC4_IN8_AI, SBC4_OUT8_AI };
- static const unsigned char dmamode[2] = {
- DMA_MODE_READ | DMA_MODE_AUTOINIT, DMA_MODE_WRITE | DMA_MODE_AUTOINIT
- };
- static const unsigned char sbcskr[2] = { SBC_SPEAKER_OFF, SBC_SPEAKER_ON };
- unsigned long dmabufaddr = virt_to_bus(SCSTATE->dmabuf);
-
- send = !!send;
- if (!reset_dsp(dev)) {
- printk(KERN_ERR "%s: sbc: cannot reset sb dsp\n", sm_drvname);
- return;
- }
- if ((dmabufaddr & 0xffff) + SCSTATE->dmabuflen > 0x10000)
- panic("sm: DMA buffer violates DMA boundary!");
- save_flags(flags);
- cli();
- sbc_int_ack(dev);
- write_dsp(dev, SBC_SAMPLE_RATE); /* set sampling rate */
- write_dsp(dev, SCSTATE->fmt[send]);
- write_dsp(dev, sbcskr[send]);
- disable_dma(dev->dma);
- clear_dma_ff(dev->dma);
- set_dma_mode(dev->dma, dmamode[send]);
- set_dma_addr(dev->dma, dmabufaddr);
- set_dma_count(dev->dma, SCSTATE->dmabuflen);
- enable_dma(dev->dma);
- sbc_int_ack(dev);
- if (SCSTATE->revhi >= 4) {
- write_dsp(dev, sbc4mode[send]);
- write_dsp(dev, SBC4_MODE_UNS_MONO);
- write_dsp(dev, ((SCSTATE->dmabuflen >> 1) - 1) & 0xff);
- write_dsp(dev, ((SCSTATE->dmabuflen >> 1) - 1) >> 8);
- } else {
- write_dsp(dev, SBC_BLOCKSIZE);
- write_dsp(dev, ((SCSTATE->dmabuflen >> 1) - 1) & 0xff);
- write_dsp(dev, ((SCSTATE->dmabuflen >> 1) - 1) >> 8);
- write_dsp(dev, sbcmode[SCSTATE->fmt[send] >= 180][send]);
- /* hispeed mode if sample rate > 13kHz */
- }
- restore_flags(flags);
-}
-
-/* --------------------------------------------------------------------- */
-
-static void sbc_interrupt(int irq, void *dev_id, struct pt_regs *regs)
-{
- struct device *dev = (struct device *)dev_id;
- struct sm_state *sm = (struct sm_state *)dev->priv;
- unsigned char new_ptt;
- unsigned char *buf;
-
- if (!dev || !sm || sm->hdrv.magic != HDLCDRV_MAGIC)
- return;
- new_ptt = hdlcdrv_ptt(&sm->hdrv);
- sbc_int_ack(dev);
- buf = SCSTATE->dmabuf;
- if (SCSTATE->dmabufidx)
- buf += SCSTATE->dmabuflen/2;
- SCSTATE->dmabufidx = !SCSTATE->dmabufidx;
- sm_int_freq(sm);
- sti();
- if (new_ptt && !SCSTATE->ptt) {
- /* starting to transmit */
- disable_dma(dev->dma);
- SCSTATE->dmabufidx = 0;
- time_exec(sm->debug_vals.demod_cyc,
- sm->mode_rx->demodulator(sm, buf, SCSTATE->dmabuflen/2));
- time_exec(sm->debug_vals.mod_cyc,
- sm->mode_tx->modulator(sm, SCSTATE->dmabuf,
- SCSTATE->dmabuflen/2));
- setup_dma_dsp(dev, sm, 1);
- time_exec(sm->debug_vals.mod_cyc,
- sm->mode_tx->modulator(sm, SCSTATE->dmabuf +
- SCSTATE->dmabuflen/2,
- SCSTATE->dmabuflen/2));
- } else if (SCSTATE->ptt == 1 && !new_ptt) {
- /* stopping transmission */
- disable_dma(dev->dma);
- SCSTATE->dmabufidx = 0;
- setup_dma_dsp(dev, sm, 0);
- SCSTATE->ptt = 0;
- } else if (SCSTATE->ptt) {
- SCSTATE->ptt--;
- time_exec(sm->debug_vals.mod_cyc,
- sm->mode_tx->modulator(sm, buf, SCSTATE->dmabuflen/2));
- } else {
- time_exec(sm->debug_vals.demod_cyc,
- sm->mode_rx->demodulator(sm, buf, SCSTATE->dmabuflen/2));
- hdlcdrv_arbitrate(dev, &sm->hdrv);
- }
- if (new_ptt)
- SCSTATE->ptt = 2;
- output_status(sm);
- hdlcdrv_transmitter(dev, &sm->hdrv);
- hdlcdrv_receiver(dev, &sm->hdrv);
-}
-
-/* --------------------------------------------------------------------- */
-
-static int sbc_open(struct device *dev, struct sm_state *sm)
-{
- if (sizeof(sm->m) < sizeof(struct sc_state_sbc)) {
- printk(KERN_ERR "sm sbc: sbc state too big: %d > %d\n",
- sizeof(struct sc_state_sbc), sizeof(sm->m));
- return -ENODEV;
- }
- if (!dev || !sm)
- return -ENXIO;
- if (dev->base_addr <= 0 || dev->base_addr > 0x1000-SBC_EXTENT ||
- dev->irq < 2 || dev->irq > 15 || dev->dma > 3)
- return -ENXIO;
- if (check_region(dev->base_addr, SBC_EXTENT))
- return -EACCES;
- /*
- * check if a card is available
- */
- if (!reset_dsp(dev))
- return -ENODEV;
- write_dsp(dev, SBC_GET_REVISION);
- if (!read_dsp(dev, &SCSTATE->revhi) ||
- !read_dsp(dev, &SCSTATE->revlo))
- return -ENODEV;
- if (SCSTATE->revhi < 2) {
- printk(KERN_ERR "%s: your card is an antiquity, at least DSP "
- "rev 2.00 required\n", sm_drvname);
- return -ENODEV;
- }
- if (SCSTATE->revhi < 3 &&
- (SCSTATE->fmt[0] >= 180 || SCSTATE->fmt[1] >= 180)) {
- printk(KERN_ERR "%s: sbc io 0x%lx: DSP rev %d.%02d too "
- "old, at least 3.00 required\n", sm_drvname,
- dev->base_addr, SCSTATE->revhi, SCSTATE->revlo);
- return -ENODEV;
- }
- /*
- * initialize some variables
- */
- if (!(SCSTATE->dmabuf = kmalloc(SCSTATE->dmabuflen, GFP_KERNEL | GFP_DMA)))
- return -ENOMEM;
- SCSTATE->dmabufidx = SCSTATE->ptt = 0;
-
- memset(&sm->m, 0, sizeof(sm->m));
- memset(&sm->d, 0, sizeof(sm->d));
- if (sm->mode_tx->init)
- sm->mode_tx->init(sm);
- if (sm->mode_rx->init)
- sm->mode_rx->init(sm);
-
- if (request_dma(dev->dma, sm->hwdrv->hw_name)) {
- kfree_s(SCSTATE->dmabuf, SCSTATE->dmabuflen);
- return -EBUSY;
- }
- if (request_irq(dev->irq, sbc_interrupt, SA_INTERRUPT,
- sm->hwdrv->hw_name, dev)) {
- free_dma(dev->dma);
- kfree_s(SCSTATE->dmabuf, SCSTATE->dmabuflen);
- return -EBUSY;
- }
- request_region(dev->base_addr, SBC_EXTENT, sm->hwdrv->hw_name);
- setup_dma_dsp(dev, sm, 0);
- return 0;
-}
-
-/* --------------------------------------------------------------------- */
-
-static int sbc_close(struct device *dev, struct sm_state *sm)
-{
- if (!dev || !sm)
- return -EINVAL;
- /*
- * disable interrupts
- */
- disable_dma(dev->dma);
- reset_dsp(dev);
- free_irq(dev->irq, dev);
- free_dma(dev->dma);
- release_region(dev->base_addr, SBC_EXTENT);
- kfree_s(SCSTATE->dmabuf, SCSTATE->dmabuflen);
- return 0;
-}
-
-/* --------------------------------------------------------------------- */
-
-static int sbc_sethw(struct device *dev, struct sm_state *sm, char *mode)
-{
- char *cp = strchr(mode, '.');
- const struct modem_tx_info *mtp = modem_tx_base;
- const struct modem_rx_info *mrp;
- int dv;
-
- if (!strcmp(mode, "off")) {
- sm->mode_tx = NULL;
- sm->mode_rx = NULL;
- return 0;
- }
- if (cp)
- *cp++ = '\0';
- else
- cp = mode;
- for (; mtp; mtp = mtp->next) {
- if (mtp->loc_storage > sizeof(sm->m)) {
- printk(KERN_ERR "%s: insufficient storage for modulator %s (%d)\n",
- sm_drvname, mtp->name, mtp->loc_storage);
- continue;
- }
- if (!mtp->name || strcmp(mtp->name, mode))
- continue;
- if (mtp->srate < 5000 || mtp->srate > 44100)
- continue;
- for (mrp = modem_rx_base; mrp; mrp = mrp->next) {
- if (mrp->loc_storage > sizeof(sm->d)) {
- printk(KERN_ERR "%s: insufficient storage for demodulator %s (%d)\n",
- sm_drvname, mrp->name, mrp->loc_storage);
- continue;
- }
- if (mrp->name && !strcmp(mrp->name, cp) &&
- mrp->srate >= 5000 && mrp->srate <= 44100) {
- sm->mode_tx = mtp;
- sm->mode_rx = mrp;
- SCSTATE->fmt[0] = 256-((1000000L+mtp->srate/2)/
- mrp->srate);
- SCSTATE->fmt[1] = 256-((1000000L+mtp->srate/2)/
- mtp->srate);
- dv = lcm(sm->mode_tx->dmabuflenmodulo,
- sm->mode_rx->dmabuflenmodulo);
- SCSTATE->dmabuflen = sm->mode_rx->srate/100+dv-1;
- SCSTATE->dmabuflen /= dv;
- SCSTATE->dmabuflen *= 2*dv; /* make sure DMA buf is even */
- printk(KERN_DEBUG "sm sbc: modtx %u modrx %u srt %u buflen %u srate %u div %u srate %u div %u\n",
- sm->mode_tx->dmabuflenmodulo, sm->mode_rx->dmabuflenmodulo,
- sm->mode_rx->srate, SCSTATE->dmabuflen, mrp->srate, SCSTATE->fmt[0], mtp->srate, SCSTATE->fmt[1]);
- return 0;
- }
- }
- }
- return -EINVAL;
-}
-
-/* --------------------------------------------------------------------- */
-
-static int sbc_ioctl(struct device *dev, struct sm_state *sm, struct ifreq *ifr,
- struct hdlcdrv_ioctl *hi, int cmd)
-{
- struct sm_ioctl bi;
- unsigned long flags;
- int i;
-
- if (cmd != SIOCDEVPRIVATE)
- return -ENOIOCTLCMD;
-
- if (hi->cmd == HDLCDRVCTL_MODEMPARMASK)
- return HDLCDRV_PARMASK_IOBASE | HDLCDRV_PARMASK_IRQ |
- HDLCDRV_PARMASK_DMA | HDLCDRV_PARMASK_SERIOBASE |
- HDLCDRV_PARMASK_PARIOBASE | HDLCDRV_PARMASK_MIDIIOBASE;
-
- if (copy_from_user(&bi, ifr->ifr_data, sizeof(bi)))
- return -EFAULT;
-
- switch (bi.cmd) {
- default:
- return -ENOIOCTLCMD;
-
- case SMCTL_GETMIXER:
- i = 0;
- bi.data.mix.sample_rate = sm->mode_rx->srate;
- bi.data.mix.bit_rate = sm->hdrv.par.bitrate;
- switch (SCSTATE->revhi) {
- case 2:
- bi.data.mix.mixer_type = SM_MIXER_CT1335;
- break;
- case 3:
- bi.data.mix.mixer_type = SM_MIXER_CT1345;
- break;
- case 4:
- bi.data.mix.mixer_type = SM_MIXER_CT1745;
- break;
- }
- if (bi.data.mix.mixer_type != SM_MIXER_INVALID &&
- bi.data.mix.reg < 0x80) {
- save_flags(flags);
- cli();
- outb(bi.data.mix.reg, DSP_MIXER_ADDR(dev->base_addr));
- bi.data.mix.data = inb(DSP_MIXER_DATA(dev->base_addr));
- restore_flags(flags);
- i = 1;
- }
- if (copy_to_user(ifr->ifr_data, &bi, sizeof(bi)))
- return -EFAULT;
- return i;
-
- case SMCTL_SETMIXER:
- if (!suser())
- return -EACCES;
- switch (SCSTATE->revhi) {
- case 2:
- if (bi.data.mix.mixer_type != SM_MIXER_CT1335)
- return -EINVAL;
- break;
- case 3:
- if (bi.data.mix.mixer_type != SM_MIXER_CT1345)
- return -EINVAL;
- break;
- case 4:
- if (bi.data.mix.mixer_type != SM_MIXER_CT1745)
- return -EINVAL;
- break;
- default:
- return -ENODEV;
- }
- if (bi.data.mix.reg >= 0x80)
- return -EACCES;
- save_flags(flags);
- cli();
- outb(bi.data.mix.reg, DSP_MIXER_ADDR(dev->base_addr));
- outb(bi.data.mix.data, DSP_MIXER_DATA(dev->base_addr));
- restore_flags(flags);
- return 0;
-
- }
- if (copy_to_user(ifr->ifr_data, &bi, sizeof(bi)))
- return -EFAULT;
- return 0;
-
-}
-
-/* --------------------------------------------------------------------- */
-
-struct hardware_info hw_sbc = {
- NEXT_HW_INFO, "sbc", sizeof(struct sc_state_sbc),
- sbc_open, sbc_close, sbc_ioctl, sbc_sethw
-};
-#undef NEXT_HW_INFO
-#define NEXT_HW_INFO (&hw_sbc)
-
-/* --------------------------------------------------------------------- */
-
-#undef SCSTATE
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