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Diffstat (limited to '')
| -rw-r--r-- | sound/pci/als4000.c | 1002 |
1 files changed, 1002 insertions, 0 deletions
diff --git a/sound/pci/als4000.c b/sound/pci/als4000.c new file mode 100644 index 000000000..ba6390e9a --- /dev/null +++ b/sound/pci/als4000.c @@ -0,0 +1,1002 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * card-als4000.c - driver for Avance Logic ALS4000 based soundcards. + * Copyright (C) 2000 by Bart Hartgers <bart@etpmod.phys.tue.nl>, + * Jaroslav Kysela <perex@perex.cz> + * Copyright (C) 2002, 2008 by Andreas Mohr <hw7oshyuv3001@sneakemail.com> + * + * Framework borrowed from Massimo Piccioni's card-als100.c. + * + * NOTES + * + * Since Avance does not provide any meaningful documentation, and I + * bought an ALS4000 based soundcard, I was forced to base this driver + * on reverse engineering. + * + * Note: this is no longer true (thank you!): + * pretty verbose chip docu (ALS4000a.PDF) can be found on the ALSA web site. + * Page numbers stated anywhere below with the "SPECS_PAGE:" tag + * refer to: ALS4000a.PDF specs Ver 1.0, May 28th, 1998. + * + * The ALS4000 seems to be the PCI-cousin of the ALS100. It contains an + * ALS100-like SB DSP/mixer, an OPL3 synth, a MPU401 and a gameport + * interface. These subsystems can be mapped into ISA io-port space, + * using the PCI-interface. In addition, the PCI-bit provides DMA and IRQ + * services to the subsystems. + * + * While ALS4000 is very similar to a SoundBlaster, the differences in + * DMA and capturing require more changes to the SoundBlaster than + * desirable, so I made this separate driver. + * + * The ALS4000 can do real full duplex playback/capture. + * + * FMDAC: + * - 0x4f -> port 0x14 + * - port 0x15 |= 1 + * + * Enable/disable 3D sound: + * - 0x50 -> port 0x14 + * - change bit 6 (0x40) of port 0x15 + * + * Set QSound: + * - 0xdb -> port 0x14 + * - set port 0x15: + * 0x3e (mode 3), 0x3c (mode 2), 0x3a (mode 1), 0x38 (mode 0) + * + * Set KSound: + * - value -> some port 0x0c0d + * + * ToDo: + * - by default, don't enable legacy game and use PCI game I/O + * - power management? (card can do voice wakeup according to datasheet!!) + */ + +#include <linux/io.h> +#include <linux/init.h> +#include <linux/pci.h> +#include <linux/gameport.h> +#include <linux/module.h> +#include <linux/dma-mapping.h> +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/rawmidi.h> +#include <sound/mpu401.h> +#include <sound/opl3.h> +#include <sound/sb.h> +#include <sound/initval.h> + +MODULE_AUTHOR("Bart Hartgers <bart@etpmod.phys.tue.nl>, Andreas Mohr"); +MODULE_DESCRIPTION("Avance Logic ALS4000"); +MODULE_LICENSE("GPL"); +MODULE_SUPPORTED_DEVICE("{{Avance Logic,ALS4000}}"); + +#if IS_REACHABLE(CONFIG_GAMEPORT) +#define SUPPORT_JOYSTICK 1 +#endif + +static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ +static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ +static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */ +#ifdef SUPPORT_JOYSTICK +static int joystick_port[SNDRV_CARDS]; +#endif + +module_param_array(index, int, NULL, 0444); +MODULE_PARM_DESC(index, "Index value for ALS4000 soundcard."); +module_param_array(id, charp, NULL, 0444); +MODULE_PARM_DESC(id, "ID string for ALS4000 soundcard."); +module_param_array(enable, bool, NULL, 0444); +MODULE_PARM_DESC(enable, "Enable ALS4000 soundcard."); +#ifdef SUPPORT_JOYSTICK +module_param_hw_array(joystick_port, int, ioport, NULL, 0444); +MODULE_PARM_DESC(joystick_port, "Joystick port address for ALS4000 soundcard. (0 = disabled)"); +#endif + +struct snd_card_als4000 { + /* most frequent access first */ + unsigned long iobase; + struct pci_dev *pci; + struct snd_sb *chip; +#ifdef SUPPORT_JOYSTICK + struct gameport *gameport; +#endif +}; + +static const struct pci_device_id snd_als4000_ids[] = { + { 0x4005, 0x4000, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0, }, /* ALS4000 */ + { 0, } +}; + +MODULE_DEVICE_TABLE(pci, snd_als4000_ids); + +enum als4k_iobase_t { + /* IOx: B == Byte, W = Word, D = DWord; SPECS_PAGE: 37 */ + ALS4K_IOD_00_AC97_ACCESS = 0x00, + ALS4K_IOW_04_AC97_READ = 0x04, + ALS4K_IOB_06_AC97_STATUS = 0x06, + ALS4K_IOB_07_IRQSTATUS = 0x07, + ALS4K_IOD_08_GCR_DATA = 0x08, + ALS4K_IOB_0C_GCR_INDEX = 0x0c, + ALS4K_IOB_0E_IRQTYPE_SB_CR1E_MPU = 0x0e, + ALS4K_IOB_10_ADLIB_ADDR0 = 0x10, + ALS4K_IOB_11_ADLIB_ADDR1 = 0x11, + ALS4K_IOB_12_ADLIB_ADDR2 = 0x12, + ALS4K_IOB_13_ADLIB_ADDR3 = 0x13, + ALS4K_IOB_14_MIXER_INDEX = 0x14, + ALS4K_IOB_15_MIXER_DATA = 0x15, + ALS4K_IOB_16_ESP_RESET = 0x16, + ALS4K_IOB_16_ACK_FOR_CR1E = 0x16, /* 2nd function */ + ALS4K_IOB_18_OPL_ADDR0 = 0x18, + ALS4K_IOB_19_OPL_ADDR1 = 0x19, + ALS4K_IOB_1A_ESP_RD_DATA = 0x1a, + ALS4K_IOB_1C_ESP_CMD_DATA = 0x1c, + ALS4K_IOB_1C_ESP_WR_STATUS = 0x1c, /* 2nd function */ + ALS4K_IOB_1E_ESP_RD_STATUS8 = 0x1e, + ALS4K_IOB_1F_ESP_RD_STATUS16 = 0x1f, + ALS4K_IOB_20_ESP_GAMEPORT_200 = 0x20, + ALS4K_IOB_21_ESP_GAMEPORT_201 = 0x21, + ALS4K_IOB_30_MIDI_DATA = 0x30, + ALS4K_IOB_31_MIDI_STATUS = 0x31, + ALS4K_IOB_31_MIDI_COMMAND = 0x31, /* 2nd function */ +}; + +enum als4k_iobase_0e_t { + ALS4K_IOB_0E_MPU_IRQ = 0x10, + ALS4K_IOB_0E_CR1E_IRQ = 0x40, + ALS4K_IOB_0E_SB_DMA_IRQ = 0x80, +}; + +enum als4k_gcr_t { /* all registers 32bit wide; SPECS_PAGE: 38 to 42 */ + ALS4K_GCR8C_MISC_CTRL = 0x8c, + ALS4K_GCR90_TEST_MODE_REG = 0x90, + ALS4K_GCR91_DMA0_ADDR = 0x91, + ALS4K_GCR92_DMA0_MODE_COUNT = 0x92, + ALS4K_GCR93_DMA1_ADDR = 0x93, + ALS4K_GCR94_DMA1_MODE_COUNT = 0x94, + ALS4K_GCR95_DMA3_ADDR = 0x95, + ALS4K_GCR96_DMA3_MODE_COUNT = 0x96, + ALS4K_GCR99_DMA_EMULATION_CTRL = 0x99, + ALS4K_GCRA0_FIFO1_CURRENT_ADDR = 0xa0, + ALS4K_GCRA1_FIFO1_STATUS_BYTECOUNT = 0xa1, + ALS4K_GCRA2_FIFO2_PCIADDR = 0xa2, + ALS4K_GCRA3_FIFO2_COUNT = 0xa3, + ALS4K_GCRA4_FIFO2_CURRENT_ADDR = 0xa4, + ALS4K_GCRA5_FIFO1_STATUS_BYTECOUNT = 0xa5, + ALS4K_GCRA6_PM_CTRL = 0xa6, + ALS4K_GCRA7_PCI_ACCESS_STORAGE = 0xa7, + ALS4K_GCRA8_LEGACY_CFG1 = 0xa8, + ALS4K_GCRA9_LEGACY_CFG2 = 0xa9, + ALS4K_GCRFF_DUMMY_SCRATCH = 0xff, +}; + +enum als4k_gcr8c_t { + ALS4K_GCR8C_IRQ_MASK_CTRL_ENABLE = 0x8000, + ALS4K_GCR8C_CHIP_REV_MASK = 0xf0000 +}; + +static inline void snd_als4k_iobase_writeb(unsigned long iobase, + enum als4k_iobase_t reg, + u8 val) +{ + outb(val, iobase + reg); +} + +static inline void snd_als4k_iobase_writel(unsigned long iobase, + enum als4k_iobase_t reg, + u32 val) +{ + outl(val, iobase + reg); +} + +static inline u8 snd_als4k_iobase_readb(unsigned long iobase, + enum als4k_iobase_t reg) +{ + return inb(iobase + reg); +} + +static inline u32 snd_als4k_iobase_readl(unsigned long iobase, + enum als4k_iobase_t reg) +{ + return inl(iobase + reg); +} + +static inline void snd_als4k_gcr_write_addr(unsigned long iobase, + enum als4k_gcr_t reg, + u32 val) +{ + snd_als4k_iobase_writeb(iobase, ALS4K_IOB_0C_GCR_INDEX, reg); + snd_als4k_iobase_writel(iobase, ALS4K_IOD_08_GCR_DATA, val); +} + +static inline void snd_als4k_gcr_write(struct snd_sb *sb, + enum als4k_gcr_t reg, + u32 val) +{ + snd_als4k_gcr_write_addr(sb->alt_port, reg, val); +} + +static inline u32 snd_als4k_gcr_read_addr(unsigned long iobase, + enum als4k_gcr_t reg) +{ + /* SPECS_PAGE: 37/38 */ + snd_als4k_iobase_writeb(iobase, ALS4K_IOB_0C_GCR_INDEX, reg); + return snd_als4k_iobase_readl(iobase, ALS4K_IOD_08_GCR_DATA); +} + +static inline u32 snd_als4k_gcr_read(struct snd_sb *sb, enum als4k_gcr_t reg) +{ + return snd_als4k_gcr_read_addr(sb->alt_port, reg); +} + +enum als4k_cr_t { /* all registers 8bit wide; SPECS_PAGE: 20 to 23 */ + ALS4K_CR0_SB_CONFIG = 0x00, + ALS4K_CR2_MISC_CONTROL = 0x02, + ALS4K_CR3_CONFIGURATION = 0x03, + ALS4K_CR17_FIFO_STATUS = 0x17, + ALS4K_CR18_ESP_MAJOR_VERSION = 0x18, + ALS4K_CR19_ESP_MINOR_VERSION = 0x19, + ALS4K_CR1A_MPU401_UART_MODE_CONTROL = 0x1a, + ALS4K_CR1C_FIFO2_BLOCK_LENGTH_LO = 0x1c, + ALS4K_CR1D_FIFO2_BLOCK_LENGTH_HI = 0x1d, + ALS4K_CR1E_FIFO2_CONTROL = 0x1e, /* secondary PCM FIFO (recording) */ + ALS4K_CR3A_MISC_CONTROL = 0x3a, + ALS4K_CR3B_CRC32_BYTE0 = 0x3b, /* for testing, activate via CR3A */ + ALS4K_CR3C_CRC32_BYTE1 = 0x3c, + ALS4K_CR3D_CRC32_BYTE2 = 0x3d, + ALS4K_CR3E_CRC32_BYTE3 = 0x3e, +}; + +enum als4k_cr0_t { + ALS4K_CR0_DMA_CONTIN_MODE_CTRL = 0x02, /* IRQ/FIFO controlled for 0/1 */ + ALS4K_CR0_DMA_90H_MODE_CTRL = 0x04, /* IRQ/FIFO controlled for 0/1 */ + ALS4K_CR0_MX80_81_REG_WRITE_ENABLE = 0x80, +}; + +static inline void snd_als4_cr_write(struct snd_sb *chip, + enum als4k_cr_t reg, + u8 data) +{ + /* Control Register is reg | 0xc0 (bit 7, 6 set) on sbmixer_index + * NOTE: assumes chip->mixer_lock to be locked externally already! + * SPECS_PAGE: 6 */ + snd_sbmixer_write(chip, reg | 0xc0, data); +} + +static inline u8 snd_als4_cr_read(struct snd_sb *chip, + enum als4k_cr_t reg) +{ + /* NOTE: assumes chip->mixer_lock to be locked externally already! */ + return snd_sbmixer_read(chip, reg | 0xc0); +} + + + +static void snd_als4000_set_rate(struct snd_sb *chip, unsigned int rate) +{ + if (!(chip->mode & SB_RATE_LOCK)) { + snd_sbdsp_command(chip, SB_DSP_SAMPLE_RATE_OUT); + snd_sbdsp_command(chip, rate>>8); + snd_sbdsp_command(chip, rate); + } +} + +static inline void snd_als4000_set_capture_dma(struct snd_sb *chip, + dma_addr_t addr, unsigned size) +{ + /* SPECS_PAGE: 40 */ + snd_als4k_gcr_write(chip, ALS4K_GCRA2_FIFO2_PCIADDR, addr); + snd_als4k_gcr_write(chip, ALS4K_GCRA3_FIFO2_COUNT, (size-1)); +} + +static inline void snd_als4000_set_playback_dma(struct snd_sb *chip, + dma_addr_t addr, + unsigned size) +{ + /* SPECS_PAGE: 38 */ + snd_als4k_gcr_write(chip, ALS4K_GCR91_DMA0_ADDR, addr); + snd_als4k_gcr_write(chip, ALS4K_GCR92_DMA0_MODE_COUNT, + (size-1)|0x180000); +} + +#define ALS4000_FORMAT_SIGNED (1<<0) +#define ALS4000_FORMAT_16BIT (1<<1) +#define ALS4000_FORMAT_STEREO (1<<2) + +static int snd_als4000_get_format(struct snd_pcm_runtime *runtime) +{ + int result; + + result = 0; + if (snd_pcm_format_signed(runtime->format)) + result |= ALS4000_FORMAT_SIGNED; + if (snd_pcm_format_physical_width(runtime->format) == 16) + result |= ALS4000_FORMAT_16BIT; + if (runtime->channels > 1) + result |= ALS4000_FORMAT_STEREO; + return result; +} + +/* structure for setting up playback */ +static const struct { + unsigned char dsp_cmd, dma_on, dma_off, format; +} playback_cmd_vals[]={ +/* ALS4000_FORMAT_U8_MONO */ +{ SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_MONO }, +/* ALS4000_FORMAT_S8_MONO */ +{ SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_MONO }, +/* ALS4000_FORMAT_U16L_MONO */ +{ SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_MONO }, +/* ALS4000_FORMAT_S16L_MONO */ +{ SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_MONO }, +/* ALS4000_FORMAT_U8_STEREO */ +{ SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_UNS_STEREO }, +/* ALS4000_FORMAT_S8_STEREO */ +{ SB_DSP4_OUT8_AI, SB_DSP_DMA8_ON, SB_DSP_DMA8_OFF, SB_DSP4_MODE_SIGN_STEREO }, +/* ALS4000_FORMAT_U16L_STEREO */ +{ SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_UNS_STEREO }, +/* ALS4000_FORMAT_S16L_STEREO */ +{ SB_DSP4_OUT16_AI, SB_DSP_DMA16_ON, SB_DSP_DMA16_OFF, SB_DSP4_MODE_SIGN_STEREO }, +}; +#define playback_cmd(chip) (playback_cmd_vals[(chip)->playback_format]) + +/* structure for setting up capture */ +enum { CMD_WIDTH8=0x04, CMD_SIGNED=0x10, CMD_MONO=0x80, CMD_STEREO=0xA0 }; +static const unsigned char capture_cmd_vals[]= +{ +CMD_WIDTH8|CMD_MONO, /* ALS4000_FORMAT_U8_MONO */ +CMD_WIDTH8|CMD_SIGNED|CMD_MONO, /* ALS4000_FORMAT_S8_MONO */ +CMD_MONO, /* ALS4000_FORMAT_U16L_MONO */ +CMD_SIGNED|CMD_MONO, /* ALS4000_FORMAT_S16L_MONO */ +CMD_WIDTH8|CMD_STEREO, /* ALS4000_FORMAT_U8_STEREO */ +CMD_WIDTH8|CMD_SIGNED|CMD_STEREO, /* ALS4000_FORMAT_S8_STEREO */ +CMD_STEREO, /* ALS4000_FORMAT_U16L_STEREO */ +CMD_SIGNED|CMD_STEREO, /* ALS4000_FORMAT_S16L_STEREO */ +}; +#define capture_cmd(chip) (capture_cmd_vals[(chip)->capture_format]) + +static int snd_als4000_capture_prepare(struct snd_pcm_substream *substream) +{ + struct snd_sb *chip = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + unsigned long size; + unsigned count; + + chip->capture_format = snd_als4000_get_format(runtime); + + size = snd_pcm_lib_buffer_bytes(substream); + count = snd_pcm_lib_period_bytes(substream); + + if (chip->capture_format & ALS4000_FORMAT_16BIT) + count >>= 1; + count--; + + spin_lock_irq(&chip->reg_lock); + snd_als4000_set_rate(chip, runtime->rate); + snd_als4000_set_capture_dma(chip, runtime->dma_addr, size); + spin_unlock_irq(&chip->reg_lock); + spin_lock_irq(&chip->mixer_lock); + snd_als4_cr_write(chip, ALS4K_CR1C_FIFO2_BLOCK_LENGTH_LO, count & 0xff); + snd_als4_cr_write(chip, ALS4K_CR1D_FIFO2_BLOCK_LENGTH_HI, count >> 8); + spin_unlock_irq(&chip->mixer_lock); + return 0; +} + +static int snd_als4000_playback_prepare(struct snd_pcm_substream *substream) +{ + struct snd_sb *chip = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + unsigned long size; + unsigned count; + + chip->playback_format = snd_als4000_get_format(runtime); + + size = snd_pcm_lib_buffer_bytes(substream); + count = snd_pcm_lib_period_bytes(substream); + + if (chip->playback_format & ALS4000_FORMAT_16BIT) + count >>= 1; + count--; + + /* FIXME: from second playback on, there's a lot more clicks and pops + * involved here than on first playback. Fiddling with + * tons of different settings didn't help (DMA, speaker on/off, + * reordering, ...). Something seems to get enabled on playback + * that I haven't found out how to disable again, which then causes + * the switching pops to reach the speakers the next time here. */ + spin_lock_irq(&chip->reg_lock); + snd_als4000_set_rate(chip, runtime->rate); + snd_als4000_set_playback_dma(chip, runtime->dma_addr, size); + + /* SPEAKER_ON not needed, since dma_on seems to also enable speaker */ + /* snd_sbdsp_command(chip, SB_DSP_SPEAKER_ON); */ + snd_sbdsp_command(chip, playback_cmd(chip).dsp_cmd); + snd_sbdsp_command(chip, playback_cmd(chip).format); + snd_sbdsp_command(chip, count & 0xff); + snd_sbdsp_command(chip, count >> 8); + snd_sbdsp_command(chip, playback_cmd(chip).dma_off); + spin_unlock_irq(&chip->reg_lock); + + return 0; +} + +static int snd_als4000_capture_trigger(struct snd_pcm_substream *substream, int cmd) +{ + struct snd_sb *chip = snd_pcm_substream_chip(substream); + int result = 0; + + /* FIXME race condition in here!!! + chip->mode non-atomic update gets consistently protected + by reg_lock always, _except_ for this place!! + Probably need to take reg_lock as outer (or inner??) lock, too. + (or serialize both lock operations? probably not, though... - racy?) + */ + spin_lock(&chip->mixer_lock); + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + chip->mode |= SB_RATE_LOCK_CAPTURE; + snd_als4_cr_write(chip, ALS4K_CR1E_FIFO2_CONTROL, + capture_cmd(chip)); + break; + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + chip->mode &= ~SB_RATE_LOCK_CAPTURE; + snd_als4_cr_write(chip, ALS4K_CR1E_FIFO2_CONTROL, + capture_cmd(chip)); + break; + default: + result = -EINVAL; + break; + } + spin_unlock(&chip->mixer_lock); + return result; +} + +static int snd_als4000_playback_trigger(struct snd_pcm_substream *substream, int cmd) +{ + struct snd_sb *chip = snd_pcm_substream_chip(substream); + int result = 0; + + spin_lock(&chip->reg_lock); + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + chip->mode |= SB_RATE_LOCK_PLAYBACK; + snd_sbdsp_command(chip, playback_cmd(chip).dma_on); + break; + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + snd_sbdsp_command(chip, playback_cmd(chip).dma_off); + chip->mode &= ~SB_RATE_LOCK_PLAYBACK; + break; + default: + result = -EINVAL; + break; + } + spin_unlock(&chip->reg_lock); + return result; +} + +static snd_pcm_uframes_t snd_als4000_capture_pointer(struct snd_pcm_substream *substream) +{ + struct snd_sb *chip = snd_pcm_substream_chip(substream); + unsigned int result; + + spin_lock(&chip->reg_lock); + result = snd_als4k_gcr_read(chip, ALS4K_GCRA4_FIFO2_CURRENT_ADDR); + spin_unlock(&chip->reg_lock); + result &= 0xffff; + return bytes_to_frames( substream->runtime, result ); +} + +static snd_pcm_uframes_t snd_als4000_playback_pointer(struct snd_pcm_substream *substream) +{ + struct snd_sb *chip = snd_pcm_substream_chip(substream); + unsigned result; + + spin_lock(&chip->reg_lock); + result = snd_als4k_gcr_read(chip, ALS4K_GCRA0_FIFO1_CURRENT_ADDR); + spin_unlock(&chip->reg_lock); + result &= 0xffff; + return bytes_to_frames( substream->runtime, result ); +} + +/* FIXME: this IRQ routine doesn't really support IRQ sharing (we always + * return IRQ_HANDLED no matter whether we actually had an IRQ flag or not). + * ALS4000a.PDF writes that while ACKing IRQ in PCI block will *not* ACK + * the IRQ in the SB core, ACKing IRQ in SB block *will* ACK the PCI IRQ + * register (alt_port + ALS4K_IOB_0E_IRQTYPE_SB_CR1E_MPU). Probably something + * could be optimized here to query/write one register only... + * And even if both registers need to be queried, then there's still the + * question of whether it's actually correct to ACK PCI IRQ before reading + * SB IRQ like we do now, since ALS4000a.PDF mentions that PCI IRQ will *clear* + * SB IRQ status. + * (hmm, SPECS_PAGE: 38 mentions it the other way around!) + * And do we *really* need the lock here for *reading* SB_DSP4_IRQSTATUS?? + * */ +static irqreturn_t snd_als4000_interrupt(int irq, void *dev_id) +{ + struct snd_sb *chip = dev_id; + unsigned pci_irqstatus; + unsigned sb_irqstatus; + + /* find out which bit of the ALS4000 PCI block produced the interrupt, + SPECS_PAGE: 38, 5 */ + pci_irqstatus = snd_als4k_iobase_readb(chip->alt_port, + ALS4K_IOB_0E_IRQTYPE_SB_CR1E_MPU); + if ((pci_irqstatus & ALS4K_IOB_0E_SB_DMA_IRQ) + && (chip->playback_substream)) /* playback */ + snd_pcm_period_elapsed(chip->playback_substream); + if ((pci_irqstatus & ALS4K_IOB_0E_CR1E_IRQ) + && (chip->capture_substream)) /* capturing */ + snd_pcm_period_elapsed(chip->capture_substream); + if ((pci_irqstatus & ALS4K_IOB_0E_MPU_IRQ) + && (chip->rmidi)) /* MPU401 interrupt */ + snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data); + /* ACK the PCI block IRQ */ + snd_als4k_iobase_writeb(chip->alt_port, + ALS4K_IOB_0E_IRQTYPE_SB_CR1E_MPU, pci_irqstatus); + + spin_lock(&chip->mixer_lock); + /* SPECS_PAGE: 20 */ + sb_irqstatus = snd_sbmixer_read(chip, SB_DSP4_IRQSTATUS); + spin_unlock(&chip->mixer_lock); + + if (sb_irqstatus & SB_IRQTYPE_8BIT) + snd_sb_ack_8bit(chip); + if (sb_irqstatus & SB_IRQTYPE_16BIT) + snd_sb_ack_16bit(chip); + if (sb_irqstatus & SB_IRQTYPE_MPUIN) + inb(chip->mpu_port); + if (sb_irqstatus & ALS4K_IRQTYPE_CR1E_DMA) + snd_als4k_iobase_readb(chip->alt_port, + ALS4K_IOB_16_ACK_FOR_CR1E); + + /* dev_dbg(chip->card->dev, "als4000: irq 0x%04x 0x%04x\n", + pci_irqstatus, sb_irqstatus); */ + + /* only ack the things we actually handled above */ + return IRQ_RETVAL( + (pci_irqstatus & (ALS4K_IOB_0E_SB_DMA_IRQ|ALS4K_IOB_0E_CR1E_IRQ| + ALS4K_IOB_0E_MPU_IRQ)) + || (sb_irqstatus & (SB_IRQTYPE_8BIT|SB_IRQTYPE_16BIT| + SB_IRQTYPE_MPUIN|ALS4K_IRQTYPE_CR1E_DMA)) + ); +} + +/*****************************************************************/ + +static const struct snd_pcm_hardware snd_als4000_playback = +{ + .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_MMAP_VALID), + .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 | + SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE, /* formats */ + .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000, + .rate_min = 4000, + .rate_max = 48000, + .channels_min = 1, + .channels_max = 2, + .buffer_bytes_max = 65536, + .period_bytes_min = 64, + .period_bytes_max = 65536, + .periods_min = 1, + .periods_max = 1024, + .fifo_size = 0 +}; + +static const struct snd_pcm_hardware snd_als4000_capture = +{ + .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_MMAP_VALID), + .formats = SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_U8 | + SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U16_LE, /* formats */ + .rates = SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000, + .rate_min = 4000, + .rate_max = 48000, + .channels_min = 1, + .channels_max = 2, + .buffer_bytes_max = 65536, + .period_bytes_min = 64, + .period_bytes_max = 65536, + .periods_min = 1, + .periods_max = 1024, + .fifo_size = 0 +}; + +/*****************************************************************/ + +static int snd_als4000_playback_open(struct snd_pcm_substream *substream) +{ + struct snd_sb *chip = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + + chip->playback_substream = substream; + runtime->hw = snd_als4000_playback; + return 0; +} + +static int snd_als4000_playback_close(struct snd_pcm_substream *substream) +{ + struct snd_sb *chip = snd_pcm_substream_chip(substream); + + chip->playback_substream = NULL; + return 0; +} + +static int snd_als4000_capture_open(struct snd_pcm_substream *substream) +{ + struct snd_sb *chip = snd_pcm_substream_chip(substream); + struct snd_pcm_runtime *runtime = substream->runtime; + + chip->capture_substream = substream; + runtime->hw = snd_als4000_capture; + return 0; +} + +static int snd_als4000_capture_close(struct snd_pcm_substream *substream) +{ + struct snd_sb *chip = snd_pcm_substream_chip(substream); + + chip->capture_substream = NULL; + return 0; +} + +/******************************************************************/ + +static const struct snd_pcm_ops snd_als4000_playback_ops = { + .open = snd_als4000_playback_open, + .close = snd_als4000_playback_close, + .prepare = snd_als4000_playback_prepare, + .trigger = snd_als4000_playback_trigger, + .pointer = snd_als4000_playback_pointer +}; + +static const struct snd_pcm_ops snd_als4000_capture_ops = { + .open = snd_als4000_capture_open, + .close = snd_als4000_capture_close, + .prepare = snd_als4000_capture_prepare, + .trigger = snd_als4000_capture_trigger, + .pointer = snd_als4000_capture_pointer +}; + +static int snd_als4000_pcm(struct snd_sb *chip, int device) +{ + struct snd_pcm *pcm; + int err; + + err = snd_pcm_new(chip->card, "ALS4000 DSP", device, 1, 1, &pcm); + if (err < 0) + return err; + pcm->private_data = chip; + pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX; + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_als4000_playback_ops); + snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_als4000_capture_ops); + + snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV, + &chip->pci->dev, 64*1024, 64*1024); + + chip->pcm = pcm; + + return 0; +} + +/******************************************************************/ + +static void snd_als4000_set_addr(unsigned long iobase, + unsigned int sb_io, + unsigned int mpu_io, + unsigned int opl_io, + unsigned int game_io) +{ + u32 cfg1 = 0; + u32 cfg2 = 0; + + if (mpu_io > 0) + cfg2 |= (mpu_io | 1) << 16; + if (sb_io > 0) + cfg2 |= (sb_io | 1); + if (game_io > 0) + cfg1 |= (game_io | 1) << 16; + if (opl_io > 0) + cfg1 |= (opl_io | 1); + snd_als4k_gcr_write_addr(iobase, ALS4K_GCRA8_LEGACY_CFG1, cfg1); + snd_als4k_gcr_write_addr(iobase, ALS4K_GCRA9_LEGACY_CFG2, cfg2); +} + +static void snd_als4000_configure(struct snd_sb *chip) +{ + u8 tmp; + int i; + + /* do some more configuration */ + spin_lock_irq(&chip->mixer_lock); + tmp = snd_als4_cr_read(chip, ALS4K_CR0_SB_CONFIG); + snd_als4_cr_write(chip, ALS4K_CR0_SB_CONFIG, + tmp|ALS4K_CR0_MX80_81_REG_WRITE_ENABLE); + /* always select DMA channel 0, since we do not actually use DMA + * SPECS_PAGE: 19/20 */ + snd_sbmixer_write(chip, SB_DSP4_DMASETUP, SB_DMASETUP_DMA0); + snd_als4_cr_write(chip, ALS4K_CR0_SB_CONFIG, + tmp & ~ALS4K_CR0_MX80_81_REG_WRITE_ENABLE); + spin_unlock_irq(&chip->mixer_lock); + + spin_lock_irq(&chip->reg_lock); + /* enable interrupts */ + snd_als4k_gcr_write(chip, ALS4K_GCR8C_MISC_CTRL, + ALS4K_GCR8C_IRQ_MASK_CTRL_ENABLE); + + /* SPECS_PAGE: 39 */ + for (i = ALS4K_GCR91_DMA0_ADDR; i <= ALS4K_GCR96_DMA3_MODE_COUNT; ++i) + snd_als4k_gcr_write(chip, i, 0); + /* enable burst mode to prevent dropouts during high PCI bus usage */ + snd_als4k_gcr_write(chip, ALS4K_GCR99_DMA_EMULATION_CTRL, + (snd_als4k_gcr_read(chip, ALS4K_GCR99_DMA_EMULATION_CTRL) & ~0x07) | 0x04); + spin_unlock_irq(&chip->reg_lock); +} + +#ifdef SUPPORT_JOYSTICK +static int snd_als4000_create_gameport(struct snd_card_als4000 *acard, int dev) +{ + struct gameport *gp; + struct resource *r; + int io_port; + + if (joystick_port[dev] == 0) + return -ENODEV; + + if (joystick_port[dev] == 1) { /* auto-detect */ + for (io_port = 0x200; io_port <= 0x218; io_port += 8) { + r = request_region(io_port, 8, "ALS4000 gameport"); + if (r) + break; + } + } else { + io_port = joystick_port[dev]; + r = request_region(io_port, 8, "ALS4000 gameport"); + } + + if (!r) { + dev_warn(&acard->pci->dev, "cannot reserve joystick ports\n"); + return -EBUSY; + } + + acard->gameport = gp = gameport_allocate_port(); + if (!gp) { + dev_err(&acard->pci->dev, "cannot allocate memory for gameport\n"); + release_and_free_resource(r); + return -ENOMEM; + } + + gameport_set_name(gp, "ALS4000 Gameport"); + gameport_set_phys(gp, "pci%s/gameport0", pci_name(acard->pci)); + gameport_set_dev_parent(gp, &acard->pci->dev); + gp->io = io_port; + gameport_set_port_data(gp, r); + + /* Enable legacy joystick port */ + snd_als4000_set_addr(acard->iobase, 0, 0, 0, 1); + + gameport_register_port(acard->gameport); + + return 0; +} + +static void snd_als4000_free_gameport(struct snd_card_als4000 *acard) +{ + if (acard->gameport) { + struct resource *r = gameport_get_port_data(acard->gameport); + + gameport_unregister_port(acard->gameport); + acard->gameport = NULL; + + /* disable joystick */ + snd_als4000_set_addr(acard->iobase, 0, 0, 0, 0); + + release_and_free_resource(r); + } +} +#else +static inline int snd_als4000_create_gameport(struct snd_card_als4000 *acard, int dev) { return -ENOSYS; } +static inline void snd_als4000_free_gameport(struct snd_card_als4000 *acard) { } +#endif + +static void snd_card_als4000_free( struct snd_card *card ) +{ + struct snd_card_als4000 *acard = card->private_data; + + /* make sure that interrupts are disabled */ + snd_als4k_gcr_write_addr(acard->iobase, ALS4K_GCR8C_MISC_CTRL, 0); + /* free resources */ + snd_als4000_free_gameport(acard); + pci_release_regions(acard->pci); + pci_disable_device(acard->pci); +} + +static int snd_card_als4000_probe(struct pci_dev *pci, + const struct pci_device_id *pci_id) +{ + static int dev; + struct snd_card *card; + struct snd_card_als4000 *acard; + unsigned long iobase; + struct snd_sb *chip; + struct snd_opl3 *opl3; + unsigned short word; + int err; + + if (dev >= SNDRV_CARDS) + return -ENODEV; + if (!enable[dev]) { + dev++; + return -ENOENT; + } + + /* enable PCI device */ + if ((err = pci_enable_device(pci)) < 0) { + return err; + } + /* check, if we can restrict PCI DMA transfers to 24 bits */ + if (dma_set_mask(&pci->dev, DMA_BIT_MASK(24)) < 0 || + dma_set_coherent_mask(&pci->dev, DMA_BIT_MASK(24)) < 0) { + dev_err(&pci->dev, "architecture does not support 24bit PCI busmaster DMA\n"); + pci_disable_device(pci); + return -ENXIO; + } + + if ((err = pci_request_regions(pci, "ALS4000")) < 0) { + pci_disable_device(pci); + return err; + } + iobase = pci_resource_start(pci, 0); + + pci_read_config_word(pci, PCI_COMMAND, &word); + pci_write_config_word(pci, PCI_COMMAND, word | PCI_COMMAND_IO); + pci_set_master(pci); + + err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE, + sizeof(*acard) /* private_data: acard */, + &card); + if (err < 0) { + pci_release_regions(pci); + pci_disable_device(pci); + return err; + } + + acard = card->private_data; + acard->pci = pci; + acard->iobase = iobase; + card->private_free = snd_card_als4000_free; + + /* disable all legacy ISA stuff */ + snd_als4000_set_addr(acard->iobase, 0, 0, 0, 0); + + if ((err = snd_sbdsp_create(card, + iobase + ALS4K_IOB_10_ADLIB_ADDR0, + pci->irq, + /* internally registered as IRQF_SHARED in case of ALS4000 SB */ + snd_als4000_interrupt, + -1, + -1, + SB_HW_ALS4000, + &chip)) < 0) { + goto out_err; + } + acard->chip = chip; + + chip->pci = pci; + chip->alt_port = iobase; + + snd_als4000_configure(chip); + + strcpy(card->driver, "ALS4000"); + strcpy(card->shortname, "Avance Logic ALS4000"); + sprintf(card->longname, "%s at 0x%lx, irq %i", + card->shortname, chip->alt_port, chip->irq); + + if ((err = snd_mpu401_uart_new( card, 0, MPU401_HW_ALS4000, + iobase + ALS4K_IOB_30_MIDI_DATA, + MPU401_INFO_INTEGRATED | + MPU401_INFO_IRQ_HOOK, + -1, &chip->rmidi)) < 0) { + dev_err(&pci->dev, "no MPU-401 device at 0x%lx?\n", + iobase + ALS4K_IOB_30_MIDI_DATA); + goto out_err; + } + /* FIXME: ALS4000 has interesting MPU401 configuration features + * at ALS4K_CR1A_MPU401_UART_MODE_CONTROL + * (pass-thru / UART switching, fast MIDI clock, etc.), + * however there doesn't seem to be an ALSA API for this... + * SPECS_PAGE: 21 */ + + if ((err = snd_als4000_pcm(chip, 0)) < 0) { + goto out_err; + } + if ((err = snd_sbmixer_new(chip)) < 0) { + goto out_err; + } + + if (snd_opl3_create(card, + iobase + ALS4K_IOB_10_ADLIB_ADDR0, + iobase + ALS4K_IOB_12_ADLIB_ADDR2, + OPL3_HW_AUTO, 1, &opl3) < 0) { + dev_err(&pci->dev, "no OPL device at 0x%lx-0x%lx?\n", + iobase + ALS4K_IOB_10_ADLIB_ADDR0, + iobase + ALS4K_IOB_12_ADLIB_ADDR2); + } else { + if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) { + goto out_err; + } + } + + snd_als4000_create_gameport(acard, dev); + + if ((err = snd_card_register(card)) < 0) { + goto out_err; + } + pci_set_drvdata(pci, card); + dev++; + err = 0; + goto out; + +out_err: + snd_card_free(card); + +out: + return err; +} + +static void snd_card_als4000_remove(struct pci_dev *pci) +{ + snd_card_free(pci_get_drvdata(pci)); +} + +#ifdef CONFIG_PM_SLEEP +static int snd_als4000_suspend(struct device *dev) +{ + struct snd_card *card = dev_get_drvdata(dev); + struct snd_card_als4000 *acard = card->private_data; + struct snd_sb *chip = acard->chip; + + snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); + + snd_sbmixer_suspend(chip); + return 0; +} + +static int snd_als4000_resume(struct device *dev) +{ + struct snd_card *card = dev_get_drvdata(dev); + struct snd_card_als4000 *acard = card->private_data; + struct snd_sb *chip = acard->chip; + + snd_als4000_configure(chip); + snd_sbdsp_reset(chip); + snd_sbmixer_resume(chip); + +#ifdef SUPPORT_JOYSTICK + if (acard->gameport) + snd_als4000_set_addr(acard->iobase, 0, 0, 0, 1); +#endif + + snd_power_change_state(card, SNDRV_CTL_POWER_D0); + return 0; +} + +static SIMPLE_DEV_PM_OPS(snd_als4000_pm, snd_als4000_suspend, snd_als4000_resume); +#define SND_ALS4000_PM_OPS &snd_als4000_pm +#else +#define SND_ALS4000_PM_OPS NULL +#endif /* CONFIG_PM_SLEEP */ + +static struct pci_driver als4000_driver = { + .name = KBUILD_MODNAME, + .id_table = snd_als4000_ids, + .probe = snd_card_als4000_probe, + .remove = snd_card_als4000_remove, + .driver = { + .pm = SND_ALS4000_PM_OPS, + }, +}; + +module_pci_driver(als4000_driver); |