diff options
Diffstat (limited to 'kernel/sound/isa/sscape.c')
| -rw-r--r-- | kernel/sound/isa/sscape.c | 1357 |
1 files changed, 1357 insertions, 0 deletions
diff --git a/kernel/sound/isa/sscape.c b/kernel/sound/isa/sscape.c new file mode 100644 index 000000000..7b248cdf0 --- /dev/null +++ b/kernel/sound/isa/sscape.c @@ -0,0 +1,1357 @@ +/* + * Low-level ALSA driver for the ENSONIQ SoundScape + * Copyright (c) by Chris Rankin + * + * This driver was written in part using information obtained from + * the OSS/Free SoundScape driver, written by Hannu Savolainen. + * + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/init.h> +#include <linux/err.h> +#include <linux/io.h> +#include <linux/isa.h> +#include <linux/delay.h> +#include <linux/firmware.h> +#include <linux/pnp.h> +#include <linux/spinlock.h> +#include <linux/module.h> +#include <asm/dma.h> +#include <sound/core.h> +#include <sound/wss.h> +#include <sound/mpu401.h> +#include <sound/initval.h> + + +MODULE_AUTHOR("Chris Rankin"); +MODULE_DESCRIPTION("ENSONIQ SoundScape driver"); +MODULE_LICENSE("GPL"); +MODULE_FIRMWARE("sndscape.co0"); +MODULE_FIRMWARE("sndscape.co1"); +MODULE_FIRMWARE("sndscape.co2"); +MODULE_FIRMWARE("sndscape.co3"); +MODULE_FIRMWARE("sndscape.co4"); +MODULE_FIRMWARE("scope.cod"); + +static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; +static char* id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; +static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; +static long wss_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; +static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; +static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; +static int dma[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; +static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; +static bool joystick[SNDRV_CARDS]; + +module_param_array(index, int, NULL, 0444); +MODULE_PARM_DESC(index, "Index number for SoundScape soundcard"); + +module_param_array(id, charp, NULL, 0444); +MODULE_PARM_DESC(id, "Description for SoundScape card"); + +module_param_array(port, long, NULL, 0444); +MODULE_PARM_DESC(port, "Port # for SoundScape driver."); + +module_param_array(wss_port, long, NULL, 0444); +MODULE_PARM_DESC(wss_port, "WSS Port # for SoundScape driver."); + +module_param_array(irq, int, NULL, 0444); +MODULE_PARM_DESC(irq, "IRQ # for SoundScape driver."); + +module_param_array(mpu_irq, int, NULL, 0444); +MODULE_PARM_DESC(mpu_irq, "MPU401 IRQ # for SoundScape driver."); + +module_param_array(dma, int, NULL, 0444); +MODULE_PARM_DESC(dma, "DMA # for SoundScape driver."); + +module_param_array(dma2, int, NULL, 0444); +MODULE_PARM_DESC(dma2, "DMA2 # for SoundScape driver."); + +module_param_array(joystick, bool, NULL, 0444); +MODULE_PARM_DESC(joystick, "Enable gameport."); + +#ifdef CONFIG_PNP +static int isa_registered; +static int pnp_registered; + +static struct pnp_card_device_id sscape_pnpids[] = { + { .id = "ENS3081", .devs = { { "ENS0000" } } }, /* Soundscape PnP */ + { .id = "ENS4081", .devs = { { "ENS1011" } } }, /* VIVO90 */ + { .id = "" } /* end */ +}; + +MODULE_DEVICE_TABLE(pnp_card, sscape_pnpids); +#endif + + +#define HOST_CTRL_IO(i) ((i) + 2) +#define HOST_DATA_IO(i) ((i) + 3) +#define ODIE_ADDR_IO(i) ((i) + 4) +#define ODIE_DATA_IO(i) ((i) + 5) +#define CODEC_IO(i) ((i) + 8) + +#define IC_ODIE 1 +#define IC_OPUS 2 + +#define RX_READY 0x01 +#define TX_READY 0x02 + +#define CMD_ACK 0x80 +#define CMD_SET_MIDI_VOL 0x84 +#define CMD_GET_MIDI_VOL 0x85 +#define CMD_XXX_MIDI_VOL 0x86 +#define CMD_SET_EXTMIDI 0x8a +#define CMD_GET_EXTMIDI 0x8b +#define CMD_SET_MT32 0x8c +#define CMD_GET_MT32 0x8d + +enum GA_REG { + GA_INTSTAT_REG = 0, + GA_INTENA_REG, + GA_DMAA_REG, + GA_DMAB_REG, + GA_INTCFG_REG, + GA_DMACFG_REG, + GA_CDCFG_REG, + GA_SMCFGA_REG, + GA_SMCFGB_REG, + GA_HMCTL_REG +}; + +#define DMA_8BIT 0x80 + + +enum card_type { + MEDIA_FX, /* Sequoia S-1000 */ + SSCAPE, /* Sequoia S-2000 */ + SSCAPE_PNP, + SSCAPE_VIVO, +}; + +struct soundscape { + spinlock_t lock; + unsigned io_base; + int ic_type; + enum card_type type; + struct resource *io_res; + struct resource *wss_res; + struct snd_wss *chip; + + unsigned char midi_vol; +}; + +#define INVALID_IRQ ((unsigned)-1) + + +static inline struct soundscape *get_card_soundscape(struct snd_card *c) +{ + return (struct soundscape *) (c->private_data); +} + +/* + * Allocates some kernel memory that we can use for DMA. + * I think this means that the memory has to map to + * contiguous pages of physical memory. + */ +static struct snd_dma_buffer *get_dmabuf(struct snd_dma_buffer *buf, + unsigned long size) +{ + if (buf) { + if (snd_dma_alloc_pages_fallback(SNDRV_DMA_TYPE_DEV, + snd_dma_isa_data(), + size, buf) < 0) { + snd_printk(KERN_ERR "sscape: Failed to allocate " + "%lu bytes for DMA\n", + size); + return NULL; + } + } + + return buf; +} + +/* + * Release the DMA-able kernel memory ... + */ +static void free_dmabuf(struct snd_dma_buffer *buf) +{ + if (buf && buf->area) + snd_dma_free_pages(buf); +} + +/* + * This function writes to the SoundScape's control registers, + * but doesn't do any locking. It's up to the caller to do that. + * This is why this function is "unsafe" ... + */ +static inline void sscape_write_unsafe(unsigned io_base, enum GA_REG reg, + unsigned char val) +{ + outb(reg, ODIE_ADDR_IO(io_base)); + outb(val, ODIE_DATA_IO(io_base)); +} + +/* + * Write to the SoundScape's control registers, and do the + * necessary locking ... + */ +static void sscape_write(struct soundscape *s, enum GA_REG reg, + unsigned char val) +{ + unsigned long flags; + + spin_lock_irqsave(&s->lock, flags); + sscape_write_unsafe(s->io_base, reg, val); + spin_unlock_irqrestore(&s->lock, flags); +} + +/* + * Read from the SoundScape's control registers, but leave any + * locking to the caller. This is why the function is "unsafe" ... + */ +static inline unsigned char sscape_read_unsafe(unsigned io_base, + enum GA_REG reg) +{ + outb(reg, ODIE_ADDR_IO(io_base)); + return inb(ODIE_DATA_IO(io_base)); +} + +/* + * Puts the SoundScape into "host" mode, as compared to "MIDI" mode + */ +static inline void set_host_mode_unsafe(unsigned io_base) +{ + outb(0x0, HOST_CTRL_IO(io_base)); +} + +/* + * Puts the SoundScape into "MIDI" mode, as compared to "host" mode + */ +static inline void set_midi_mode_unsafe(unsigned io_base) +{ + outb(0x3, HOST_CTRL_IO(io_base)); +} + +/* + * Read the SoundScape's host-mode control register, but leave + * any locking issues to the caller ... + */ +static inline int host_read_unsafe(unsigned io_base) +{ + int data = -1; + if ((inb(HOST_CTRL_IO(io_base)) & RX_READY) != 0) + data = inb(HOST_DATA_IO(io_base)); + + return data; +} + +/* + * Read the SoundScape's host-mode control register, performing + * a limited amount of busy-waiting if the register isn't ready. + * Also leaves all locking-issues to the caller ... + */ +static int host_read_ctrl_unsafe(unsigned io_base, unsigned timeout) +{ + int data; + + while (((data = host_read_unsafe(io_base)) < 0) && (timeout != 0)) { + udelay(100); + --timeout; + } /* while */ + + return data; +} + +/* + * Write to the SoundScape's host-mode control registers, but + * leave any locking issues to the caller ... + */ +static inline int host_write_unsafe(unsigned io_base, unsigned char data) +{ + if ((inb(HOST_CTRL_IO(io_base)) & TX_READY) != 0) { + outb(data, HOST_DATA_IO(io_base)); + return 1; + } + + return 0; +} + +/* + * Write to the SoundScape's host-mode control registers, performing + * a limited amount of busy-waiting if the register isn't ready. + * Also leaves all locking-issues to the caller ... + */ +static int host_write_ctrl_unsafe(unsigned io_base, unsigned char data, + unsigned timeout) +{ + int err; + + while (!(err = host_write_unsafe(io_base, data)) && (timeout != 0)) { + udelay(100); + --timeout; + } /* while */ + + return err; +} + + +/* + * Check that the MIDI subsystem is operational. If it isn't, + * then we will hang the computer if we try to use it ... + * + * NOTE: This check is based upon observation, not documentation. + */ +static inline int verify_mpu401(const struct snd_mpu401 *mpu) +{ + return ((inb(MPU401C(mpu)) & 0xc0) == 0x80); +} + +/* + * This is apparently the standard way to initailise an MPU-401 + */ +static inline void initialise_mpu401(const struct snd_mpu401 *mpu) +{ + outb(0, MPU401D(mpu)); +} + +/* + * Tell the SoundScape to activate the AD1845 chip (I think). + * The AD1845 detection fails if we *don't* do this, so I + * think that this is a good idea ... + */ +static void activate_ad1845_unsafe(unsigned io_base) +{ + unsigned char val = sscape_read_unsafe(io_base, GA_HMCTL_REG); + sscape_write_unsafe(io_base, GA_HMCTL_REG, (val & 0xcf) | 0x10); + sscape_write_unsafe(io_base, GA_CDCFG_REG, 0x80); +} + +/* + * Do the necessary ALSA-level cleanup to deallocate our driver ... + */ +static void soundscape_free(struct snd_card *c) +{ + struct soundscape *sscape = get_card_soundscape(c); + release_and_free_resource(sscape->io_res); + release_and_free_resource(sscape->wss_res); + free_dma(sscape->chip->dma1); +} + +/* + * Tell the SoundScape to begin a DMA tranfer using the given channel. + * All locking issues are left to the caller. + */ +static void sscape_start_dma_unsafe(unsigned io_base, enum GA_REG reg) +{ + sscape_write_unsafe(io_base, reg, + sscape_read_unsafe(io_base, reg) | 0x01); + sscape_write_unsafe(io_base, reg, + sscape_read_unsafe(io_base, reg) & 0xfe); +} + +/* + * Wait for a DMA transfer to complete. This is a "limited busy-wait", + * and all locking issues are left to the caller. + */ +static int sscape_wait_dma_unsafe(unsigned io_base, enum GA_REG reg, + unsigned timeout) +{ + while (!(sscape_read_unsafe(io_base, reg) & 0x01) && (timeout != 0)) { + udelay(100); + --timeout; + } /* while */ + + return sscape_read_unsafe(io_base, reg) & 0x01; +} + +/* + * Wait for the On-Board Processor to return its start-up + * acknowledgement sequence. This wait is too long for + * us to perform "busy-waiting", and so we must sleep. + * This in turn means that we must not be holding any + * spinlocks when we call this function. + */ +static int obp_startup_ack(struct soundscape *s, unsigned timeout) +{ + unsigned long end_time = jiffies + msecs_to_jiffies(timeout); + + do { + unsigned long flags; + int x; + + spin_lock_irqsave(&s->lock, flags); + x = host_read_unsafe(s->io_base); + spin_unlock_irqrestore(&s->lock, flags); + if (x == 0xfe || x == 0xff) + return 1; + + msleep(10); + } while (time_before(jiffies, end_time)); + + return 0; +} + +/* + * Wait for the host to return its start-up acknowledgement + * sequence. This wait is too long for us to perform + * "busy-waiting", and so we must sleep. This in turn means + * that we must not be holding any spinlocks when we call + * this function. + */ +static int host_startup_ack(struct soundscape *s, unsigned timeout) +{ + unsigned long end_time = jiffies + msecs_to_jiffies(timeout); + + do { + unsigned long flags; + int x; + + spin_lock_irqsave(&s->lock, flags); + x = host_read_unsafe(s->io_base); + spin_unlock_irqrestore(&s->lock, flags); + if (x == 0xfe) + return 1; + + msleep(10); + } while (time_before(jiffies, end_time)); + + return 0; +} + +/* + * Upload a byte-stream into the SoundScape using DMA channel A. + */ +static int upload_dma_data(struct soundscape *s, const unsigned char *data, + size_t size) +{ + unsigned long flags; + struct snd_dma_buffer dma; + int ret; + unsigned char val; + + if (!get_dmabuf(&dma, PAGE_ALIGN(32 * 1024))) + return -ENOMEM; + + spin_lock_irqsave(&s->lock, flags); + + /* + * Reset the board ... + */ + val = sscape_read_unsafe(s->io_base, GA_HMCTL_REG); + sscape_write_unsafe(s->io_base, GA_HMCTL_REG, val & 0x3f); + + /* + * Enable the DMA channels and configure them ... + */ + val = (s->chip->dma1 << 4) | DMA_8BIT; + sscape_write_unsafe(s->io_base, GA_DMAA_REG, val); + sscape_write_unsafe(s->io_base, GA_DMAB_REG, 0x20); + + /* + * Take the board out of reset ... + */ + val = sscape_read_unsafe(s->io_base, GA_HMCTL_REG); + sscape_write_unsafe(s->io_base, GA_HMCTL_REG, val | 0x80); + + /* + * Upload the firmware to the SoundScape + * board through the DMA channel ... + */ + while (size != 0) { + unsigned long len; + + len = min(size, dma.bytes); + memcpy(dma.area, data, len); + data += len; + size -= len; + + snd_dma_program(s->chip->dma1, dma.addr, len, DMA_MODE_WRITE); + sscape_start_dma_unsafe(s->io_base, GA_DMAA_REG); + if (!sscape_wait_dma_unsafe(s->io_base, GA_DMAA_REG, 5000)) { + /* + * Don't forget to release this spinlock we're holding + */ + spin_unlock_irqrestore(&s->lock, flags); + + snd_printk(KERN_ERR + "sscape: DMA upload has timed out\n"); + ret = -EAGAIN; + goto _release_dma; + } + } /* while */ + + set_host_mode_unsafe(s->io_base); + outb(0x0, s->io_base); + + /* + * Boot the board ... (I think) + */ + val = sscape_read_unsafe(s->io_base, GA_HMCTL_REG); + sscape_write_unsafe(s->io_base, GA_HMCTL_REG, val | 0x40); + spin_unlock_irqrestore(&s->lock, flags); + + /* + * If all has gone well, then the board should acknowledge + * the new upload and tell us that it has rebooted OK. We + * give it 5 seconds (max) ... + */ + ret = 0; + if (!obp_startup_ack(s, 5000)) { + snd_printk(KERN_ERR "sscape: No response " + "from on-board processor after upload\n"); + ret = -EAGAIN; + } else if (!host_startup_ack(s, 5000)) { + snd_printk(KERN_ERR + "sscape: SoundScape failed to initialise\n"); + ret = -EAGAIN; + } + +_release_dma: + /* + * NOTE!!! We are NOT holding any spinlocks at this point !!! + */ + sscape_write(s, GA_DMAA_REG, (s->ic_type == IC_OPUS ? 0x40 : 0x70)); + free_dmabuf(&dma); + + return ret; +} + +/* + * Upload the bootblock(?) into the SoundScape. The only + * purpose of this block of code seems to be to tell + * us which version of the microcode we should be using. + */ +static int sscape_upload_bootblock(struct snd_card *card) +{ + struct soundscape *sscape = get_card_soundscape(card); + unsigned long flags; + const struct firmware *init_fw = NULL; + int data = 0; + int ret; + + ret = request_firmware(&init_fw, "scope.cod", card->dev); + if (ret < 0) { + snd_printk(KERN_ERR "sscape: Error loading scope.cod"); + return ret; + } + ret = upload_dma_data(sscape, init_fw->data, init_fw->size); + + release_firmware(init_fw); + + spin_lock_irqsave(&sscape->lock, flags); + if (ret == 0) + data = host_read_ctrl_unsafe(sscape->io_base, 100); + + if (data & 0x10) + sscape_write_unsafe(sscape->io_base, GA_SMCFGA_REG, 0x2f); + + spin_unlock_irqrestore(&sscape->lock, flags); + + data &= 0xf; + if (ret == 0 && data > 7) { + snd_printk(KERN_ERR + "sscape: timeout reading firmware version\n"); + ret = -EAGAIN; + } + + return (ret == 0) ? data : ret; +} + +/* + * Upload the microcode into the SoundScape. + */ +static int sscape_upload_microcode(struct snd_card *card, int version) +{ + struct soundscape *sscape = get_card_soundscape(card); + const struct firmware *init_fw = NULL; + char name[14]; + int err; + + snprintf(name, sizeof(name), "sndscape.co%d", version); + + err = request_firmware(&init_fw, name, card->dev); + if (err < 0) { + snd_printk(KERN_ERR "sscape: Error loading sndscape.co%d", + version); + return err; + } + err = upload_dma_data(sscape, init_fw->data, init_fw->size); + if (err == 0) + snd_printk(KERN_INFO "sscape: MIDI firmware loaded %d KBs\n", + init_fw->size >> 10); + + release_firmware(init_fw); + + return err; +} + +/* + * Mixer control for the SoundScape's MIDI device. + */ +static int sscape_midi_info(struct snd_kcontrol *ctl, + struct snd_ctl_elem_info *uinfo) +{ + uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; + uinfo->count = 1; + uinfo->value.integer.min = 0; + uinfo->value.integer.max = 127; + return 0; +} + +static int sscape_midi_get(struct snd_kcontrol *kctl, + struct snd_ctl_elem_value *uctl) +{ + struct snd_wss *chip = snd_kcontrol_chip(kctl); + struct snd_card *card = chip->card; + register struct soundscape *s = get_card_soundscape(card); + unsigned long flags; + + spin_lock_irqsave(&s->lock, flags); + uctl->value.integer.value[0] = s->midi_vol; + spin_unlock_irqrestore(&s->lock, flags); + return 0; +} + +static int sscape_midi_put(struct snd_kcontrol *kctl, + struct snd_ctl_elem_value *uctl) +{ + struct snd_wss *chip = snd_kcontrol_chip(kctl); + struct snd_card *card = chip->card; + struct soundscape *s = get_card_soundscape(card); + unsigned long flags; + int change; + unsigned char new_val; + + spin_lock_irqsave(&s->lock, flags); + + new_val = uctl->value.integer.value[0] & 127; + /* + * We need to put the board into HOST mode before we + * can send any volume-changing HOST commands ... + */ + set_host_mode_unsafe(s->io_base); + + /* + * To successfully change the MIDI volume setting, you seem to + * have to write a volume command, write the new volume value, + * and then perform another volume-related command. Perhaps the + * first command is an "open" and the second command is a "close"? + */ + if (s->midi_vol == new_val) { + change = 0; + goto __skip_change; + } + change = host_write_ctrl_unsafe(s->io_base, CMD_SET_MIDI_VOL, 100) + && host_write_ctrl_unsafe(s->io_base, new_val, 100) + && host_write_ctrl_unsafe(s->io_base, CMD_XXX_MIDI_VOL, 100) + && host_write_ctrl_unsafe(s->io_base, new_val, 100); + s->midi_vol = new_val; +__skip_change: + + /* + * Take the board out of HOST mode and back into MIDI mode ... + */ + set_midi_mode_unsafe(s->io_base); + + spin_unlock_irqrestore(&s->lock, flags); + return change; +} + +static struct snd_kcontrol_new midi_mixer_ctl = { + .iface = SNDRV_CTL_ELEM_IFACE_MIXER, + .name = "MIDI", + .info = sscape_midi_info, + .get = sscape_midi_get, + .put = sscape_midi_put +}; + +/* + * The SoundScape can use two IRQs from a possible set of four. + * These IRQs are encoded as bit patterns so that they can be + * written to the control registers. + */ +static unsigned get_irq_config(int sscape_type, int irq) +{ + static const int valid_irq[] = { 9, 5, 7, 10 }; + static const int old_irq[] = { 9, 7, 5, 15 }; + unsigned cfg; + + if (sscape_type == MEDIA_FX) { + for (cfg = 0; cfg < ARRAY_SIZE(old_irq); ++cfg) + if (irq == old_irq[cfg]) + return cfg; + } else { + for (cfg = 0; cfg < ARRAY_SIZE(valid_irq); ++cfg) + if (irq == valid_irq[cfg]) + return cfg; + } + + return INVALID_IRQ; +} + +/* + * Perform certain arcane port-checks to see whether there + * is a SoundScape board lurking behind the given ports. + */ +static int detect_sscape(struct soundscape *s, long wss_io) +{ + unsigned long flags; + unsigned d; + int retval = 0; + + spin_lock_irqsave(&s->lock, flags); + + /* + * The following code is lifted from the original OSS driver, + * and as I don't have a datasheet I cannot really comment + * on what it is doing... + */ + if ((inb(HOST_CTRL_IO(s->io_base)) & 0x78) != 0) + goto _done; + + d = inb(ODIE_ADDR_IO(s->io_base)) & 0xf0; + if ((d & 0x80) != 0) + goto _done; + + if (d == 0) + s->ic_type = IC_ODIE; + else if ((d & 0x60) != 0) + s->ic_type = IC_OPUS; + else + goto _done; + + outb(0xfa, ODIE_ADDR_IO(s->io_base)); + if ((inb(ODIE_ADDR_IO(s->io_base)) & 0x9f) != 0x0a) + goto _done; + + outb(0xfe, ODIE_ADDR_IO(s->io_base)); + if ((inb(ODIE_ADDR_IO(s->io_base)) & 0x9f) != 0x0e) + goto _done; + + outb(0xfe, ODIE_ADDR_IO(s->io_base)); + d = inb(ODIE_DATA_IO(s->io_base)); + if (s->type != SSCAPE_VIVO && (d & 0x9f) != 0x0e) + goto _done; + + if (s->ic_type == IC_OPUS) + activate_ad1845_unsafe(s->io_base); + + if (s->type == SSCAPE_VIVO) + wss_io += 4; + + d = sscape_read_unsafe(s->io_base, GA_HMCTL_REG); + sscape_write_unsafe(s->io_base, GA_HMCTL_REG, d | 0xc0); + + /* wait for WSS codec */ + for (d = 0; d < 500; d++) { + if ((inb(wss_io) & 0x80) == 0) + break; + spin_unlock_irqrestore(&s->lock, flags); + msleep(1); + spin_lock_irqsave(&s->lock, flags); + } + + if ((inb(wss_io) & 0x80) != 0) + goto _done; + + if (inb(wss_io + 2) == 0xff) + goto _done; + + d = sscape_read_unsafe(s->io_base, GA_HMCTL_REG) & 0x3f; + sscape_write_unsafe(s->io_base, GA_HMCTL_REG, d); + + if ((inb(wss_io) & 0x80) != 0) + s->type = MEDIA_FX; + + d = sscape_read_unsafe(s->io_base, GA_HMCTL_REG); + sscape_write_unsafe(s->io_base, GA_HMCTL_REG, d | 0xc0); + /* wait for WSS codec */ + for (d = 0; d < 500; d++) { + if ((inb(wss_io) & 0x80) == 0) + break; + spin_unlock_irqrestore(&s->lock, flags); + msleep(1); + spin_lock_irqsave(&s->lock, flags); + } + + /* + * SoundScape successfully detected! + */ + retval = 1; + +_done: + spin_unlock_irqrestore(&s->lock, flags); + return retval; +} + +/* + * ALSA callback function, called when attempting to open the MIDI device. + * Check that the MIDI firmware has been loaded, because we don't want + * to crash the machine. Also check that someone isn't using the hardware + * IOCTL device. + */ +static int mpu401_open(struct snd_mpu401 *mpu) +{ + if (!verify_mpu401(mpu)) { + snd_printk(KERN_ERR "sscape: MIDI disabled, " + "please load firmware\n"); + return -ENODEV; + } + + return 0; +} + +/* + * Initialse an MPU-401 subdevice for MIDI support on the SoundScape. + */ +static int create_mpu401(struct snd_card *card, int devnum, + unsigned long port, int irq) +{ + struct soundscape *sscape = get_card_soundscape(card); + struct snd_rawmidi *rawmidi; + int err; + + err = snd_mpu401_uart_new(card, devnum, MPU401_HW_MPU401, port, + MPU401_INFO_INTEGRATED, irq, &rawmidi); + if (err == 0) { + struct snd_mpu401 *mpu = rawmidi->private_data; + mpu->open_input = mpu401_open; + mpu->open_output = mpu401_open; + mpu->private_data = sscape; + + initialise_mpu401(mpu); + } + + return err; +} + + +/* + * Create an AD1845 PCM subdevice on the SoundScape. The AD1845 + * is very much like a CS4231, with a few extra bits. We will + * try to support at least some of the extra bits by overriding + * some of the CS4231 callback. + */ +static int create_ad1845(struct snd_card *card, unsigned port, + int irq, int dma1, int dma2) +{ + register struct soundscape *sscape = get_card_soundscape(card); + struct snd_wss *chip; + int err; + int codec_type = WSS_HW_DETECT; + + switch (sscape->type) { + case MEDIA_FX: + case SSCAPE: + /* + * There are some freak examples of early Soundscape cards + * with CS4231 instead of AD1848/CS4248. Unfortunately, the + * CS4231 works only in CS4248 compatibility mode on + * these cards so force it. + */ + if (sscape->ic_type != IC_OPUS) + codec_type = WSS_HW_AD1848; + break; + + case SSCAPE_VIVO: + port += 4; + break; + default: + break; + } + + err = snd_wss_create(card, port, -1, irq, dma1, dma2, + codec_type, WSS_HWSHARE_DMA1, &chip); + if (!err) { + unsigned long flags; + + if (sscape->type != SSCAPE_VIVO) { + /* + * The input clock frequency on the SoundScape must + * be 14.31818 MHz, because we must set this register + * to get the playback to sound correct ... + */ + snd_wss_mce_up(chip); + spin_lock_irqsave(&chip->reg_lock, flags); + snd_wss_out(chip, AD1845_CLOCK, 0x20); + spin_unlock_irqrestore(&chip->reg_lock, flags); + snd_wss_mce_down(chip); + + } + + err = snd_wss_pcm(chip, 0); + if (err < 0) { + snd_printk(KERN_ERR "sscape: No PCM device " + "for AD1845 chip\n"); + goto _error; + } + + err = snd_wss_mixer(chip); + if (err < 0) { + snd_printk(KERN_ERR "sscape: No mixer device " + "for AD1845 chip\n"); + goto _error; + } + if (chip->hardware != WSS_HW_AD1848) { + err = snd_wss_timer(chip, 0); + if (err < 0) { + snd_printk(KERN_ERR "sscape: No timer device " + "for AD1845 chip\n"); + goto _error; + } + } + + if (sscape->type != SSCAPE_VIVO) { + err = snd_ctl_add(card, + snd_ctl_new1(&midi_mixer_ctl, chip)); + if (err < 0) { + snd_printk(KERN_ERR "sscape: Could not create " + "MIDI mixer control\n"); + goto _error; + } + } + + sscape->chip = chip; + } + +_error: + return err; +} + + +/* + * Create an ALSA soundcard entry for the SoundScape, using + * the given list of port, IRQ and DMA resources. + */ +static int create_sscape(int dev, struct snd_card *card) +{ + struct soundscape *sscape = get_card_soundscape(card); + unsigned dma_cfg; + unsigned irq_cfg; + unsigned mpu_irq_cfg; + struct resource *io_res; + struct resource *wss_res; + unsigned long flags; + int err; + int val; + const char *name; + + /* + * Grab IO ports that we will need to probe so that we + * can detect and control this hardware ... + */ + io_res = request_region(port[dev], 8, "SoundScape"); + if (!io_res) { + snd_printk(KERN_ERR + "sscape: can't grab port 0x%lx\n", port[dev]); + return -EBUSY; + } + wss_res = NULL; + if (sscape->type == SSCAPE_VIVO) { + wss_res = request_region(wss_port[dev], 4, "SoundScape"); + if (!wss_res) { + snd_printk(KERN_ERR "sscape: can't grab port 0x%lx\n", + wss_port[dev]); + err = -EBUSY; + goto _release_region; + } + } + + /* + * Grab one DMA channel ... + */ + err = request_dma(dma[dev], "SoundScape"); + if (err < 0) { + snd_printk(KERN_ERR "sscape: can't grab DMA %d\n", dma[dev]); + goto _release_region; + } + + spin_lock_init(&sscape->lock); + sscape->io_res = io_res; + sscape->wss_res = wss_res; + sscape->io_base = port[dev]; + + if (!detect_sscape(sscape, wss_port[dev])) { + printk(KERN_ERR "sscape: hardware not detected at 0x%x\n", + sscape->io_base); + err = -ENODEV; + goto _release_dma; + } + + switch (sscape->type) { + case MEDIA_FX: + name = "MediaFX/SoundFX"; + break; + case SSCAPE: + name = "Soundscape"; + break; + case SSCAPE_PNP: + name = "Soundscape PnP"; + break; + case SSCAPE_VIVO: + name = "Soundscape VIVO"; + break; + default: + name = "unknown Soundscape"; + break; + } + + printk(KERN_INFO "sscape: %s card detected at 0x%x, using IRQ %d, DMA %d\n", + name, sscape->io_base, irq[dev], dma[dev]); + + /* + * Check that the user didn't pass us garbage data ... + */ + irq_cfg = get_irq_config(sscape->type, irq[dev]); + if (irq_cfg == INVALID_IRQ) { + snd_printk(KERN_ERR "sscape: Invalid IRQ %d\n", irq[dev]); + err = -ENXIO; + goto _release_dma; + } + + mpu_irq_cfg = get_irq_config(sscape->type, mpu_irq[dev]); + if (mpu_irq_cfg == INVALID_IRQ) { + snd_printk(KERN_ERR "sscape: Invalid IRQ %d\n", mpu_irq[dev]); + err = -ENXIO; + goto _release_dma; + } + + /* + * Tell the on-board devices where their resources are (I think - + * I can't be sure without a datasheet ... So many magic values!) + */ + spin_lock_irqsave(&sscape->lock, flags); + + sscape_write_unsafe(sscape->io_base, GA_SMCFGA_REG, 0x2e); + sscape_write_unsafe(sscape->io_base, GA_SMCFGB_REG, 0x00); + + /* + * Enable and configure the DMA channels ... + */ + sscape_write_unsafe(sscape->io_base, GA_DMACFG_REG, 0x50); + dma_cfg = (sscape->ic_type == IC_OPUS ? 0x40 : 0x70); + sscape_write_unsafe(sscape->io_base, GA_DMAA_REG, dma_cfg); + sscape_write_unsafe(sscape->io_base, GA_DMAB_REG, 0x20); + + mpu_irq_cfg |= mpu_irq_cfg << 2; + val = sscape_read_unsafe(sscape->io_base, GA_HMCTL_REG) & 0xF7; + if (joystick[dev]) + val |= 8; + sscape_write_unsafe(sscape->io_base, GA_HMCTL_REG, val | 0x10); + sscape_write_unsafe(sscape->io_base, GA_INTCFG_REG, 0xf0 | mpu_irq_cfg); + sscape_write_unsafe(sscape->io_base, + GA_CDCFG_REG, 0x09 | DMA_8BIT + | (dma[dev] << 4) | (irq_cfg << 1)); + /* + * Enable the master IRQ ... + */ + sscape_write_unsafe(sscape->io_base, GA_INTENA_REG, 0x80); + + spin_unlock_irqrestore(&sscape->lock, flags); + + /* + * We have now enabled the codec chip, and so we should + * detect the AD1845 device ... + */ + err = create_ad1845(card, wss_port[dev], irq[dev], + dma[dev], dma2[dev]); + if (err < 0) { + snd_printk(KERN_ERR + "sscape: No AD1845 device at 0x%lx, IRQ %d\n", + wss_port[dev], irq[dev]); + goto _release_dma; + } + strcpy(card->driver, "SoundScape"); + strcpy(card->shortname, name); + snprintf(card->longname, sizeof(card->longname), + "%s at 0x%lx, IRQ %d, DMA1 %d, DMA2 %d\n", + name, sscape->chip->port, sscape->chip->irq, + sscape->chip->dma1, sscape->chip->dma2); + +#define MIDI_DEVNUM 0 + if (sscape->type != SSCAPE_VIVO) { + err = sscape_upload_bootblock(card); + if (err >= 0) + err = sscape_upload_microcode(card, err); + + if (err == 0) { + err = create_mpu401(card, MIDI_DEVNUM, port[dev], + mpu_irq[dev]); + if (err < 0) { + snd_printk(KERN_ERR "sscape: Failed to create " + "MPU-401 device at 0x%lx\n", + port[dev]); + goto _release_dma; + } + + /* + * Initialize mixer + */ + spin_lock_irqsave(&sscape->lock, flags); + sscape->midi_vol = 0; + host_write_ctrl_unsafe(sscape->io_base, + CMD_SET_MIDI_VOL, 100); + host_write_ctrl_unsafe(sscape->io_base, + sscape->midi_vol, 100); + host_write_ctrl_unsafe(sscape->io_base, + CMD_XXX_MIDI_VOL, 100); + host_write_ctrl_unsafe(sscape->io_base, + sscape->midi_vol, 100); + host_write_ctrl_unsafe(sscape->io_base, + CMD_SET_EXTMIDI, 100); + host_write_ctrl_unsafe(sscape->io_base, + 0, 100); + host_write_ctrl_unsafe(sscape->io_base, CMD_ACK, 100); + + set_midi_mode_unsafe(sscape->io_base); + spin_unlock_irqrestore(&sscape->lock, flags); + } + } + + /* + * Now that we have successfully created this sound card, + * it is safe to store the pointer. + * NOTE: we only register the sound card's "destructor" + * function now that our "constructor" has completed. + */ + card->private_free = soundscape_free; + + return 0; + +_release_dma: + free_dma(dma[dev]); + +_release_region: + release_and_free_resource(wss_res); + release_and_free_resource(io_res); + + return err; +} + + +static int snd_sscape_match(struct device *pdev, unsigned int i) +{ + /* + * Make sure we were given ALL of the other parameters. + */ + if (port[i] == SNDRV_AUTO_PORT) + return 0; + + if (irq[i] == SNDRV_AUTO_IRQ || + mpu_irq[i] == SNDRV_AUTO_IRQ || + dma[i] == SNDRV_AUTO_DMA) { + printk(KERN_INFO + "sscape: insufficient parameters, " + "need IO, IRQ, MPU-IRQ and DMA\n"); + return 0; + } + + return 1; +} + +static int snd_sscape_probe(struct device *pdev, unsigned int dev) +{ + struct snd_card *card; + struct soundscape *sscape; + int ret; + + ret = snd_card_new(pdev, index[dev], id[dev], THIS_MODULE, + sizeof(struct soundscape), &card); + if (ret < 0) + return ret; + + sscape = get_card_soundscape(card); + sscape->type = SSCAPE; + + dma[dev] &= 0x03; + + ret = create_sscape(dev, card); + if (ret < 0) + goto _release_card; + + ret = snd_card_register(card); + if (ret < 0) { + snd_printk(KERN_ERR "sscape: Failed to register sound card\n"); + goto _release_card; + } + dev_set_drvdata(pdev, card); + return 0; + +_release_card: + snd_card_free(card); + return ret; +} + +static int snd_sscape_remove(struct device *devptr, unsigned int dev) +{ + snd_card_free(dev_get_drvdata(devptr)); + return 0; +} + +#define DEV_NAME "sscape" + +static struct isa_driver snd_sscape_driver = { + .match = snd_sscape_match, + .probe = snd_sscape_probe, + .remove = snd_sscape_remove, + /* FIXME: suspend/resume */ + .driver = { + .name = DEV_NAME + }, +}; + +#ifdef CONFIG_PNP +static inline int get_next_autoindex(int i) +{ + while (i < SNDRV_CARDS && port[i] != SNDRV_AUTO_PORT) + ++i; + return i; +} + + +static int sscape_pnp_detect(struct pnp_card_link *pcard, + const struct pnp_card_device_id *pid) +{ + static int idx = 0; + struct pnp_dev *dev; + struct snd_card *card; + struct soundscape *sscape; + int ret; + + /* + * Allow this function to fail *quietly* if all the ISA PnP + * devices were configured using module parameters instead. + */ + idx = get_next_autoindex(idx); + if (idx >= SNDRV_CARDS) + return -ENOSPC; + + /* + * Check that we still have room for another sound card ... + */ + dev = pnp_request_card_device(pcard, pid->devs[0].id, NULL); + if (!dev) + return -ENODEV; + + if (!pnp_is_active(dev)) { + if (pnp_activate_dev(dev) < 0) { + snd_printk(KERN_INFO "sscape: device is inactive\n"); + return -EBUSY; + } + } + + /* + * Create a new ALSA sound card entry, in anticipation + * of detecting our hardware ... + */ + ret = snd_card_new(&pcard->card->dev, + index[idx], id[idx], THIS_MODULE, + sizeof(struct soundscape), &card); + if (ret < 0) + return ret; + + sscape = get_card_soundscape(card); + + /* + * Identify card model ... + */ + if (!strncmp("ENS4081", pid->id, 7)) + sscape->type = SSCAPE_VIVO; + else + sscape->type = SSCAPE_PNP; + + /* + * Read the correct parameters off the ISA PnP bus ... + */ + port[idx] = pnp_port_start(dev, 0); + irq[idx] = pnp_irq(dev, 0); + mpu_irq[idx] = pnp_irq(dev, 1); + dma[idx] = pnp_dma(dev, 0) & 0x03; + if (sscape->type == SSCAPE_PNP) { + dma2[idx] = dma[idx]; + wss_port[idx] = CODEC_IO(port[idx]); + } else { + wss_port[idx] = pnp_port_start(dev, 1); + dma2[idx] = pnp_dma(dev, 1); + } + + ret = create_sscape(idx, card); + if (ret < 0) + goto _release_card; + + ret = snd_card_register(card); + if (ret < 0) { + snd_printk(KERN_ERR "sscape: Failed to register sound card\n"); + goto _release_card; + } + + pnp_set_card_drvdata(pcard, card); + ++idx; + return 0; + +_release_card: + snd_card_free(card); + return ret; +} + +static void sscape_pnp_remove(struct pnp_card_link *pcard) +{ + snd_card_free(pnp_get_card_drvdata(pcard)); + pnp_set_card_drvdata(pcard, NULL); +} + +static struct pnp_card_driver sscape_pnpc_driver = { + .flags = PNP_DRIVER_RES_DO_NOT_CHANGE, + .name = "sscape", + .id_table = sscape_pnpids, + .probe = sscape_pnp_detect, + .remove = sscape_pnp_remove, +}; + +#endif /* CONFIG_PNP */ + +static int __init sscape_init(void) +{ + int err; + + err = isa_register_driver(&snd_sscape_driver, SNDRV_CARDS); +#ifdef CONFIG_PNP + if (!err) + isa_registered = 1; + + err = pnp_register_card_driver(&sscape_pnpc_driver); + if (!err) + pnp_registered = 1; + + if (isa_registered) + err = 0; +#endif + return err; +} + +static void __exit sscape_exit(void) +{ +#ifdef CONFIG_PNP + if (pnp_registered) + pnp_unregister_card_driver(&sscape_pnpc_driver); + if (isa_registered) +#endif + isa_unregister_driver(&snd_sscape_driver); +} + +module_init(sscape_init); +module_exit(sscape_exit); |