patch-2.1.71 linux/drivers/net/soundmodem/sm_sbc.c
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- Lines: 942
- Date:
Wed Dec 31 16:00:00 1969
- Orig file:
v2.1.70/linux/drivers/net/soundmodem/sm_sbc.c
- Orig date:
Mon Aug 11 14:47:04 1997
diff -u --recursive --new-file v2.1.70/linux/drivers/net/soundmodem/sm_sbc.c linux/drivers/net/soundmodem/sm_sbc.c
@@ -1,941 +0,0 @@
-/*****************************************************************************/
-
-/*
- * sm_sbc.c -- 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.
- *
- */
-
-#include <linux/ptrace.h>
-#include <linux/sched.h>
-#include <linux/interrupt.h>
-#include <asm/io.h>
-#include <asm/dma.h>
-#include <linux/ioport.h>
-#include <linux/soundmodem.h>
-#include "sm.h"
-#include "smdma.h"
-
-/* --------------------------------------------------------------------- */
-
-/*
- * currently this module is supposed to support both module styles, i.e.
- * the old one present up to about 2.1.9, and the new one functioning
- * starting with 2.1.21. The reason is I have a kit allowing to compile
- * this module also under 2.0.x which was requested by several people.
- * This will go in 2.2
- */
-#include <linux/version.h>
-
-#if LINUX_VERSION_CODE >= 0x20100
-#include <asm/uaccess.h>
-#else
-#include <asm/segment.h>
-#include <linux/mm.h>
-
-#undef put_user
-#undef get_user
-
-#define put_user(x,ptr) ({ __put_user((unsigned long)(x),(ptr),sizeof(*(ptr))); 0; })
-#define get_user(x,ptr) ({ x = ((__typeof__(*(ptr)))__get_user((ptr),sizeof(*(ptr)))); 0; })
-
-extern inline int copy_from_user(void *to, const void *from, unsigned long n)
-{
- int i = verify_area(VERIFY_READ, from, n);
- if (i)
- return i;
- memcpy_fromfs(to, from, n);
- return 0;
-}
-
-extern inline int copy_to_user(void *to, const void *from, unsigned long n)
-{
- int i = verify_area(VERIFY_WRITE, to, n);
- if (i)
- return i;
- memcpy_tofs(to, from, n);
- return 0;
-}
-#endif
-
-/* --------------------------------------------------------------------- */
-
-struct sc_state_sbc {
- unsigned char revhi, revlo;
- unsigned char fmt[2];
- unsigned int sr[2];
-};
-
-#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 DSP_INTACK_16BIT(iobase) (iobase+0xf)
-#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_SAMPLE_RATE_OUT 0x41
-#define SBC_SAMPLE_RATE_IN 0x42
-#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
-#define SBC4_MODE_SIGN_MONO 0x10
-
-#define SBC4_OUT16_AI 0xb6
-#define SBC4_IN16_AI 0xbe
-
-/* --------------------------------------------------------------------- */
-
-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 int config_resources(struct device *dev, struct sm_state *sm, int fdx)
-{
- unsigned char irqreg = 0, dmareg = 0, realirq, realdma;
- unsigned long flags;
-
- switch (dev->irq) {
- case 2:
- case 9:
- irqreg |= 0x01;
- break;
-
- case 5:
- irqreg |= 0x02;
- break;
-
- case 7:
- irqreg |= 0x04;
- break;
-
- case 10:
- irqreg |= 0x08;
- break;
-
- default:
- return -ENODEV;
- }
-
- switch (dev->dma) {
- case 0:
- dmareg |= 0x01;
- break;
-
- case 1:
- dmareg |= 0x02;
- break;
-
- case 3:
- dmareg |= 0x08;
- break;
-
- default:
- return -ENODEV;
- }
-
- if (fdx) {
- switch (sm->hdrv.ptt_out.dma2) {
- case 5:
- dmareg |= 0x20;
- break;
-
- case 6:
- dmareg |= 0x40;
- break;
-
- case 7:
- dmareg |= 0x80;
- break;
-
- default:
- return -ENODEV;
- }
- }
- save_flags(flags);
- cli();
- outb(0x80, DSP_MIXER_ADDR(dev->base_addr));
- outb(irqreg, DSP_MIXER_DATA(dev->base_addr));
- realirq = inb(DSP_MIXER_DATA(dev->base_addr));
- outb(0x81, DSP_MIXER_ADDR(dev->base_addr));
- outb(dmareg, DSP_MIXER_DATA(dev->base_addr));
- realdma = inb(DSP_MIXER_DATA(dev->base_addr));
- restore_flags(flags);
- if ((~realirq) & irqreg || (~realdma) & dmareg) {
- printk(KERN_ERR "%s: sbc resource registers cannot be set; PnP device "
- "and IRQ/DMA specified wrongly?\n", sm_drvname);
- return -EINVAL;
- }
- return 0;
-}
-
-/* --------------------------------------------------------------------- */
-
-static void inline sbc_int_ack_8bit(struct device *dev)
-{
- inb(DSP_DATA_AVAIL(dev->base_addr));
-}
-
-/* --------------------------------------------------------------------- */
-
-static void inline sbc_int_ack_16bit(struct device *dev)
-{
- inb(DSP_INTACK_16BIT(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 sbcskr[2] = { SBC_SPEAKER_OFF, SBC_SPEAKER_ON };
- unsigned int nsamps;
-
- send = !!send;
- if (!reset_dsp(dev)) {
- printk(KERN_ERR "%s: sbc: cannot reset sb dsp\n", sm_drvname);
- return;
- }
- save_flags(flags);
- cli();
- sbc_int_ack_8bit(dev);
- write_dsp(dev, SBC_SAMPLE_RATE); /* set sampling rate */
- write_dsp(dev, SCSTATE->fmt[send]);
- write_dsp(dev, sbcskr[send]);
- nsamps = dma_setup(sm, send, dev->dma) - 1;
- sbc_int_ack_8bit(dev);
- if (SCSTATE->revhi >= 4) {
- write_dsp(dev, sbc4mode[send]);
- write_dsp(dev, SBC4_MODE_UNS_MONO);
- write_dsp(dev, nsamps & 0xff);
- write_dsp(dev, nsamps >> 8);
- } else {
- write_dsp(dev, SBC_BLOCKSIZE);
- write_dsp(dev, nsamps & 0xff);
- write_dsp(dev, nsamps >> 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 int curfrag;
-
- if (!dev || !sm || sm->hdrv.magic != HDLCDRV_MAGIC)
- return;
- cli();
- sbc_int_ack_8bit(dev);
- disable_dma(dev->dma);
- clear_dma_ff(dev->dma);
- dma_ptr(sm, sm->dma.ptt_cnt > 0, dev->dma, &curfrag);
- enable_dma(dev->dma);
- sm_int_freq(sm);
- sti();
- if (sm->dma.ptt_cnt <= 0) {
- dma_receive(sm, curfrag);
- hdlcdrv_arbitrate(dev, &sm->hdrv);
- if (hdlcdrv_ptt(&sm->hdrv)) {
- /* starting to transmit */
- disable_dma(dev->dma);
- hdlcdrv_transmitter(dev, &sm->hdrv); /* prefill HDLC buffer */
- dma_start_transmit(sm);
- setup_dma_dsp(dev, sm, 1);
- dma_transmit(sm);
- }
- } else if (dma_end_transmit(sm, curfrag)) {
- /* stopping transmission */
- disable_dma(dev->dma);
- sti();
- dma_init_receive(sm);
- setup_dma_dsp(dev, sm, 0);
- } else
- dma_transmit(sm);
- sm_output_status(sm);
- hdlcdrv_transmitter(dev, &sm->hdrv);
- hdlcdrv_receiver(dev, &sm->hdrv);
-
-}
-
-/* --------------------------------------------------------------------- */
-
-static int sbc_open(struct device *dev, struct sm_state *sm)
-{
- int err;
- unsigned int dmasz, u;
-
- 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)) {
- printk(KERN_ERR "%s: sbc: no card at io address 0x%lx\n",
- sm_drvname, dev->base_addr);
- return -ENODEV;
- }
- write_dsp(dev, SBC_GET_REVISION);
- if (!read_dsp(dev, &SCSTATE->revhi) ||
- !read_dsp(dev, &SCSTATE->revlo))
- return -ENODEV;
- printk(KERN_INFO "%s: SoundBlaster DSP revision %d.%d\n", sm_drvname,
- SCSTATE->revhi, SCSTATE->revlo);
- 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;
- }
- if (SCSTATE->revhi >= 4 &&
- (err = config_resources(dev, sm, 0))) {
- printk(KERN_ERR "%s: invalid IRQ and/or DMA specified\n", sm_drvname);
- return err;
- }
- /*
- * initialize some variables
- */
- dma_init_receive(sm);
- dmasz = (NUM_FRAGMENTS + 1) * sm->dma.ifragsz;
- u = NUM_FRAGMENTS * sm->dma.ofragsz;
- if (u > dmasz)
- dmasz = u;
- if (!(sm->dma.ibuf = sm->dma.obuf = kmalloc(dmasz, GFP_KERNEL | GFP_DMA)))
- return -ENOMEM;
- dma_init_transmit(sm);
- dma_init_receive(sm);
-
- 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(sm->dma.obuf, dmasz);
- return -EBUSY;
- }
- if (request_irq(dev->irq, sbc_interrupt, SA_INTERRUPT,
- sm->hwdrv->hw_name, dev)) {
- free_dma(dev->dma);
- kfree_s(sm->dma.obuf, dmasz);
- 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(sm->dma.obuf);
- 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 = sm_modem_tx_table;
- const struct modem_rx_info **mrp;
-
- if (!strcmp(mode, "off")) {
- sm->mode_tx = NULL;
- sm->mode_rx = NULL;
- return 0;
- }
- if (cp)
- *cp++ = '\0';
- else
- cp = mode;
- for (; *mtp; mtp++) {
- 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;
- if (!(*mtp)->modulator_u8)
- continue;
- for (mrp = sm_modem_rx_table; *mrp; mrp++) {
- 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)->demodulator_u8)
- 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+sm->mode_rx->srate/2)/
- sm->mode_rx->srate);
- SCSTATE->fmt[1] = 256-((1000000L+sm->mode_tx->srate/2)/
- sm->mode_tx->srate);
- sm->dma.ifragsz = (sm->mode_rx->srate + 50)/100;
- sm->dma.ofragsz = (sm->mode_tx->srate + 50)/100;
- if (sm->dma.ifragsz < sm->mode_rx->overlap)
- sm->dma.ifragsz = sm->mode_rx->overlap;
- sm->dma.i16bit = sm->dma.o16bit = 0;
- 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;
- bi.data.mix.mixer_type = SM_MIXER_INVALID;
- 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;
-
-}
-
-/* --------------------------------------------------------------------- */
-
-const struct hardware_info sm_hw_sbc = {
- "sbc", sizeof(struct sc_state_sbc),
- sbc_open, sbc_close, sbc_ioctl, sbc_sethw
-};
-
-/* --------------------------------------------------------------------- */
-
-static void setup_dma_fdx_dsp(struct device *dev, struct sm_state *sm)
-{
- unsigned long flags;
- unsigned int isamps, osamps;
-
- if (!reset_dsp(dev)) {
- printk(KERN_ERR "%s: sbc: cannot reset sb dsp\n", sm_drvname);
- return;
- }
- save_flags(flags);
- cli();
- sbc_int_ack_8bit(dev);
- sbc_int_ack_16bit(dev);
- /* should eventually change to set rates individually by SBC_SAMPLE_RATE_{IN/OUT} */
- write_dsp(dev, SBC_SAMPLE_RATE_IN);
- write_dsp(dev, SCSTATE->sr[0] >> 8);
- write_dsp(dev, SCSTATE->sr[0] & 0xff);
- write_dsp(dev, SBC_SAMPLE_RATE_OUT);
- write_dsp(dev, SCSTATE->sr[1] >> 8);
- write_dsp(dev, SCSTATE->sr[1] & 0xff);
- write_dsp(dev, SBC_SPEAKER_ON);
- if (sm->dma.o16bit) {
- /*
- * DMA channel 1 (8bit) does input (capture),
- * DMA channel 2 (16bit) does output (playback)
- */
- isamps = dma_setup(sm, 0, dev->dma) - 1;
- osamps = dma_setup(sm, 1, sm->hdrv.ptt_out.dma2) - 1;
- sbc_int_ack_8bit(dev);
- sbc_int_ack_16bit(dev);
- write_dsp(dev, SBC4_IN8_AI);
- write_dsp(dev, SBC4_MODE_UNS_MONO);
- write_dsp(dev, isamps & 0xff);
- write_dsp(dev, isamps >> 8);
- write_dsp(dev, SBC4_OUT16_AI);
- write_dsp(dev, SBC4_MODE_SIGN_MONO);
- write_dsp(dev, osamps & 0xff);
- write_dsp(dev, osamps >> 8);
- } else {
- /*
- * DMA channel 1 (8bit) does output (playback),
- * DMA channel 2 (16bit) does input (capture)
- */
- isamps = dma_setup(sm, 0, sm->hdrv.ptt_out.dma2) - 1;
- osamps = dma_setup(sm, 1, dev->dma) - 1;
- sbc_int_ack_8bit(dev);
- sbc_int_ack_16bit(dev);
- write_dsp(dev, SBC4_OUT8_AI);
- write_dsp(dev, SBC4_MODE_UNS_MONO);
- write_dsp(dev, osamps & 0xff);
- write_dsp(dev, osamps >> 8);
- write_dsp(dev, SBC4_IN16_AI);
- write_dsp(dev, SBC4_MODE_SIGN_MONO);
- write_dsp(dev, isamps & 0xff);
- write_dsp(dev, isamps >> 8);
- }
- dma_init_receive(sm);
- dma_init_transmit(sm);
- restore_flags(flags);
-}
-
-/* --------------------------------------------------------------------- */
-
-static void sbcfdx_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 intsrc, pbint = 0, captint = 0;
- unsigned int ocfrag, icfrag;
- unsigned long flags;
-
- if (!dev || !sm || sm->hdrv.magic != HDLCDRV_MAGIC)
- return;
- save_flags(flags);
- cli();
- outb(0x82, DSP_MIXER_ADDR(dev->base_addr));
- intsrc = inb(DSP_MIXER_DATA(dev->base_addr));
- if (intsrc & 0x01) {
- sbc_int_ack_8bit(dev);
- if (sm->dma.o16bit) {
- captint = 1;
- disable_dma(dev->dma);
- clear_dma_ff(dev->dma);
- dma_ptr(sm, 0, dev->dma, &icfrag);
- enable_dma(dev->dma);
- } else {
- pbint = 1;
- disable_dma(dev->dma);
- clear_dma_ff(dev->dma);
- dma_ptr(sm, 1, dev->dma, &ocfrag);
- enable_dma(dev->dma);
- }
- }
- if (intsrc & 0x02) {
- sbc_int_ack_16bit(dev);
- if (sm->dma.o16bit) {
- pbint = 1;
- disable_dma(sm->hdrv.ptt_out.dma2);
- clear_dma_ff(sm->hdrv.ptt_out.dma2);
- dma_ptr(sm, 1, sm->hdrv.ptt_out.dma2, &ocfrag);
- enable_dma(sm->hdrv.ptt_out.dma2);
- } else {
- captint = 1;
- disable_dma(sm->hdrv.ptt_out.dma2);
- clear_dma_ff(sm->hdrv.ptt_out.dma2);
- dma_ptr(sm, 0, sm->hdrv.ptt_out.dma2, &icfrag);
- enable_dma(sm->hdrv.ptt_out.dma2);
- }
- }
- restore_flags(flags);
- sm_int_freq(sm);
- sti();
- if (pbint) {
- if (dma_end_transmit(sm, ocfrag))
- dma_clear_transmit(sm);
- dma_transmit(sm);
- }
- if (captint) {
- dma_receive(sm, icfrag);
- hdlcdrv_arbitrate(dev, &sm->hdrv);
- }
- sm_output_status(sm);
- hdlcdrv_transmitter(dev, &sm->hdrv);
- hdlcdrv_receiver(dev, &sm->hdrv);
-}
-
-/* --------------------------------------------------------------------- */
-
-static int sbcfdx_open(struct device *dev, struct sm_state *sm)
-{
- int err;
-
- 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)) {
- printk(KERN_ERR "%s: sbc: no card at io address 0x%lx\n",
- sm_drvname, dev->base_addr);
- return -ENODEV;
- }
- write_dsp(dev, SBC_GET_REVISION);
- if (!read_dsp(dev, &SCSTATE->revhi) ||
- !read_dsp(dev, &SCSTATE->revlo))
- return -ENODEV;
- printk(KERN_INFO "%s: SoundBlaster DSP revision %d.%d\n", sm_drvname,
- SCSTATE->revhi, SCSTATE->revlo);
- if (SCSTATE->revhi < 4) {
- printk(KERN_ERR "%s: at least DSP rev 4.00 required\n", sm_drvname);
- return -ENODEV;
- }
- if ((err = config_resources(dev, sm, 1))) {
- printk(KERN_ERR "%s: invalid IRQ and/or DMA specified\n", sm_drvname);
- return err;
- }
- /*
- * initialize some variables
- */
- if (!(sm->dma.ibuf = kmalloc(sm->dma.ifragsz * (NUM_FRAGMENTS+1), GFP_KERNEL | GFP_DMA)))
- return -ENOMEM;
- if (!(sm->dma.obuf = kmalloc(sm->dma.ofragsz * NUM_FRAGMENTS, GFP_KERNEL | GFP_DMA))) {
- kfree(sm->dma.ibuf);
- return -ENOMEM;
- }
- dma_init_transmit(sm);
- dma_init_receive(sm);
-
- 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(sm->dma.ibuf);
- kfree(sm->dma.obuf);
- return -EBUSY;
- }
- if (request_dma(sm->hdrv.ptt_out.dma2, sm->hwdrv->hw_name)) {
- kfree(sm->dma.ibuf);
- kfree(sm->dma.obuf);
- free_dma(dev->dma);
- return -EBUSY;
- }
- if (request_irq(dev->irq, sbcfdx_interrupt, SA_INTERRUPT,
- sm->hwdrv->hw_name, dev)) {
- kfree(sm->dma.ibuf);
- kfree(sm->dma.obuf);
- free_dma(dev->dma);
- free_dma(sm->hdrv.ptt_out.dma2);
- return -EBUSY;
- }
- request_region(dev->base_addr, SBC_EXTENT, sm->hwdrv->hw_name);
- setup_dma_fdx_dsp(dev, sm);
- return 0;
-}
-
-/* --------------------------------------------------------------------- */
-
-static int sbcfdx_close(struct device *dev, struct sm_state *sm)
-{
- if (!dev || !sm)
- return -EINVAL;
- /*
- * disable interrupts
- */
- disable_dma(dev->dma);
- disable_dma(sm->hdrv.ptt_out.dma2);
- reset_dsp(dev);
- free_irq(dev->irq, dev);
- free_dma(dev->dma);
- free_dma(sm->hdrv.ptt_out.dma2);
- release_region(dev->base_addr, SBC_EXTENT);
- kfree(sm->dma.ibuf);
- kfree(sm->dma.obuf);
- return 0;
-}
-
-/* --------------------------------------------------------------------- */
-
-static int sbcfdx_sethw(struct device *dev, struct sm_state *sm, char *mode)
-{
- char *cp = strchr(mode, '.');
- const struct modem_tx_info **mtp = sm_modem_tx_table;
- const struct modem_rx_info **mrp;
-
- if (!strcmp(mode, "off")) {
- sm->mode_tx = NULL;
- sm->mode_rx = NULL;
- return 0;
- }
- if (cp)
- *cp++ = '\0';
- else
- cp = mode;
- for (; *mtp; mtp++) {
- 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 = sm_modem_rx_table; *mrp; mrp++) {
- 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) &&
- (*mtp)->srate >= 5000 && (*mtp)->srate <= 44100 &&
- (*mrp)->srate == (*mtp)->srate) {
- sm->mode_tx = *mtp;
- sm->mode_rx = *mrp;
- SCSTATE->sr[0] = sm->mode_rx->srate;
- SCSTATE->sr[1] = sm->mode_tx->srate;
- sm->dma.ifragsz = (sm->mode_rx->srate + 50)/100;
- sm->dma.ofragsz = (sm->mode_tx->srate + 50)/100;
- if (sm->dma.ifragsz < sm->mode_rx->overlap)
- sm->dma.ifragsz = sm->mode_rx->overlap;
- if (sm->mode_rx->demodulator_s16 && sm->mode_tx->modulator_u8) {
- sm->dma.i16bit = 1;
- sm->dma.o16bit = 0;
- sm->dma.ifragsz <<= 1;
- } else if (sm->mode_rx->demodulator_u8 && sm->mode_tx->modulator_s16) {
- sm->dma.i16bit = 0;
- sm->dma.o16bit = 1;
- sm->dma.ofragsz <<= 1;
- } else {
- printk(KERN_INFO "%s: mode %s or %s unusable\n", sm_drvname,
- sm->mode_rx->name, sm->mode_tx->name);
- sm->mode_tx = NULL;
- sm->mode_rx = NULL;
- return -EINVAL;
- }
- return 0;
- }
- }
- }
- return -EINVAL;
-}
-
-/* --------------------------------------------------------------------- */
-
-static int sbcfdx_ioctl(struct device *dev, struct sm_state *sm, struct ifreq *ifr,
- struct hdlcdrv_ioctl *hi, int cmd)
-{
- if (cmd != SIOCDEVPRIVATE)
- return -ENOIOCTLCMD;
-
- if (hi->cmd == HDLCDRVCTL_MODEMPARMASK)
- return HDLCDRV_PARMASK_IOBASE | HDLCDRV_PARMASK_IRQ |
- HDLCDRV_PARMASK_DMA | HDLCDRV_PARMASK_DMA2 | HDLCDRV_PARMASK_SERIOBASE |
- HDLCDRV_PARMASK_PARIOBASE | HDLCDRV_PARMASK_MIDIIOBASE;
-
- return sbc_ioctl(dev, sm, ifr, hi, cmd);
-}
-
-/* --------------------------------------------------------------------- */
-
-const struct hardware_info sm_hw_sbcfdx = {
- "sbcfdx", sizeof(struct sc_state_sbc),
- sbcfdx_open, sbcfdx_close, sbcfdx_ioctl, sbcfdx_sethw
-};
-
-/* --------------------------------------------------------------------- */
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen, slshen@lbl.gov