patch-2.3.99-pre7 linux/drivers/sound/via82cxxx_audio.c
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- Lines: 2990
- Date:
Thu May 11 13:45:35 2000
- Orig file:
v2.3.99-pre6/linux/drivers/sound/via82cxxx_audio.c
- Orig date:
Tue Apr 11 15:09:19 2000
diff -u --recursive --new-file v2.3.99-pre6/linux/drivers/sound/via82cxxx_audio.c linux/drivers/sound/via82cxxx_audio.c
@@ -5,51 +5,45 @@
* Distributed under the GNU GENERAL PUBLIC LICENSE (GPL) Version 2.
* See the "COPYING" file distributed with this software for more info.
*
- * Documentation for this driver available as
- * linux/Documentation/sound/via82cxxx.txt.
+ * For a list of known bugs (errata) and documentation,
+ * see via82cxxx.txt in linux/Documentation/sound.
*
- * Since the mixer is called from the OSS glue the kernel lock is always held
- * on our AC97 mixing
*/
-#define VIA_VERSION "1.1.2.1"
+#define VIA_VERSION "1.1.5"
-
-#include <linux/module.h>
#include <linux/config.h>
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/fs.h>
+#include <linux/module.h>
#include <linux/kernel.h>
+#include <linux/fs.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/proc_fs.h>
-
+#include <linux/spinlock.h>
+#include <linux/sound.h>
+#include <linux/soundcard.h>
+#include <linux/ac97_codec.h>
#include <asm/io.h>
+#include <asm/delay.h>
+#include <asm/uaccess.h>
+#include <asm/hardirq.h>
#include "sound_config.h"
#include "soundmodule.h"
-#include "sb.h"
-#include "ac97.h"
-#include "mpu401.h"
-#ifndef SOUND_LOCK
-#define SOUND_LOCK do {} while (0)
-#define SOUND_LOCK_END do {} while (0)
-#endif
-#define VIA_DEBUG 0 /* define to 1 to enable debugging output and checks */
-#if VIA_DEBUG
+#undef VIA_DEBUG /* define to enable debugging output and checks */
+#ifdef VIA_DEBUG
/* note: prints function name for you */
#define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__ , ## args)
#else
#define DPRINTK(fmt, args...)
#endif
-#define VIA_NDEBUG 0 /* define to 1 to disable lightweight runtime checks */
-#if VIA_NDEBUG
+#define VIA_NDEBUG /* define to disable lightweight runtime checks */
+#ifdef VIA_NDEBUG
#define assert(expr)
#else
#define assert(expr) \
@@ -59,29 +53,109 @@
}
#endif
+/* user switch: undefine to exclude /proc data */
+#define VIA_PROC_FS 1
+
+/* don't mess with this */
+#ifndef CONFIG_PROC_FS
+#undef VIA_PROC_FS
+#endif
+
#define arraysize(x) (sizeof(x)/sizeof(*(x)))
-#define MAX_CARDS 2
+#define MAX_CARDS 1
#define LINE_SIZE 10
#define VIA_CARD_NAME "VIA 82Cxxx Audio driver " VIA_VERSION
-#define VIA_MODULE_NAME "via_audio"
+#define VIA_MODULE_NAME "via82cxxx"
#define PFX VIA_MODULE_NAME ": "
#define VIA_COUNTER_LIMIT 100000
+/* size of DMA buffers */
+#define VIA_DMA_BUFFERS 16
+#define VIA_DMA_BUF_SIZE PAGE_SIZE
+
/* 82C686 function 5 (audio codec) PCI configuration registers */
+#define VIA_ACLINK_CTRL 0x41
#define VIA_FUNC_ENABLE 0x42
#define VIA_PNP_CONTROL 0x43
-#define VIA_AC97_CTRL 0x80
+#define VIA_FM_NMI_CTRL 0x48
+
+/*
+ * controller base 0 (scatter-gather) registers
+ *
+ * NOTE: Via datasheet lists first channel as "read"
+ * channel and second channel as "write" channel.
+ * I changed the naming of the constants to be more
+ * clear than I felt the datasheet to be.
+ */
+
+#define VIA_BASE0_PCM_OUT_CHAN 0x00 /* output PCM to user */
+#define VIA_BASE0_PCM_OUT_CHAN_STATUS 0x00
+#define VIA_BASE0_PCM_OUT_CHAN_CTRL 0x01
+#define VIA_BASE0_PCM_OUT_CHAN_TYPE 0x02
+#define VIA_BASE0_PCM_OUT_BLOCK_COUNT 0x0C
+
+#define VIA_BASE0_PCM_IN_CHAN 0x10 /* input PCM from user */
+#define VIA_BASE0_PCM_IN_CHAN_STATUS 0x10
+#define VIA_BASE0_PCM_IN_CHAN_CTRL 0x11
+#define VIA_BASE0_PCM_IN_CHAN_TYPE 0x12
+
+/* offsets from base */
+#define VIA_PCM_STATUS 0x00
+#define VIA_PCM_CONTROL 0x01
+#define VIA_PCM_TYPE 0x02
+#define VIA_PCM_TABLE_ADDR 0x04
+
+/* XXX unused DMA channel for FM PCM data */
+#define VIA_BASE0_FM_OUT_CHAN 0x20
+#define VIA_BASE0_FM_OUT_CHAN_STATUS 0x20
+#define VIA_BASE0_FM_OUT_CHAN_CTRL 0x21
+#define VIA_BASE0_FM_OUT_CHAN_TYPE 0x22
+
+#define VIA_BASE0_AC97_CTRL 0x80
+#define VIA_BASE0_SGD_STATUS_SHADOW 0x84
+#define VIA_BASE0_GPI_INT_ENABLE 0x8C
+
+/* VIA_BASE0_AUDIO_xxx_CHAN_TYPE bits */
+#define VIA_IRQ_ON_FLAG (1<<0) /* int on each flagged scatter block */
+#define VIA_IRQ_ON_EOL (1<<1) /* int at end of scatter list */
+#define VIA_INT_SEL_PCI_LAST_LINE_READ (0) /* int at PCI read of last line */
+#define VIA_INT_SEL_LAST_SAMPLE_SENT (1<<2) /* int at last sample sent */
+#define VIA_INT_SEL_ONE_LINE_LEFT (1<<3) /* int at less than one line to send */
+#define VIA_PCM_FMT_STEREO (1<<4) /* PCM stereo format (bit clear == mono) */
+#define VIA_PCM_FMT_16BIT (1<<5) /* PCM 16-bit format (bit clear == 8-bit) */
+#define VIA_PCM_FIFO (1<<6) /* enable FIFO? documented as "reserved" */
+#define VIA_RESTART_SGD_ON_EOL (1<<7) /* restart scatter-gather at EOL */
+#define VIA_PCM_FMT_MASK (VIA_PCM_FMT_STEREO|VIA_PCM_FMT_16BIT)
+#define VIA_CHAN_TYPE_MASK (VIA_RESTART_SGD_ON_EOL | \
+ VIA_PCM_FIFO | \
+ VIA_IRQ_ON_FLAG | \
+ VIA_IRQ_ON_EOL)
+#define VIA_CHAN_TYPE_INT_SELECT (VIA_INT_SEL_LAST_SAMPLE_SENT)
/* PCI configuration register bits and masks */
#define VIA_CR40_AC97_READY 0x01
#define VIA_CR40_AC97_LOW_POWER 0x02
#define VIA_CR40_SECONDARY_READY 0x04
-#define VIA_CR41_ACLINK_ENABLE 0x80
+#define VIA_CR41_AC97_ENABLE 0x80 /* enable AC97 codec */
+#define VIA_CR41_AC97_RESET 0x40 /* clear bit to reset AC97 */
+#define VIA_CR41_AC97_WAKEUP 0x20 /* wake up from power-down mode */
+#define VIA_CR41_AC97_SDO 0x10 /* force Serial Data Out (SDO) high */
+#define VIA_CR41_VRA 0x08 /* enable variable sample rate */
+#define VIA_CR41_PCM_ENABLE 0x04 /* AC Link SGD Read Channel PCM Data Output */
+#define VIA_CR41_FM_PCM_ENABLE 0x02 /* AC Link FM Channel PCM Data Out */
+#define VIA_CR41_SB_PCM_ENABLE 0x01 /* AC Link SB PCM Data Output */
+#define VIA_CR41_BOOT_MASK (VIA_CR41_AC97_ENABLE | \
+ VIA_CR41_AC97_WAKEUP | \
+ VIA_CR41_AC97_SDO)
+#define VIA_CR41_RUN_MASK (VIA_CR41_AC97_ENABLE | \
+ VIA_CR41_AC97_RESET | \
+ VIA_CR41_VRA | \
+ VIA_CR41_PCM_ENABLE)
#define VIA_CR42_SB_ENABLE 0x01
#define VIA_CR42_MIDI_ENABLE 0x02
@@ -91,632 +165,2372 @@
#define VIA_CR44_SECOND_CODEC_SUPPORT (1 << 6)
#define VIA_CR44_AC_LINK_ACCESS (1 << 7)
+#define VIA_CR48_FM_TRAP_TO_NMI (1 << 2)
+
+/* controller base 0 register bitmasks */
+#define VIA_INT_DISABLE_MASK (~(0x01|0x02))
+#define VIA_SGD_STOPPED (1 << 2)
+#define VIA_SGD_ACTIVE (1 << 7)
+#define VIA_SGD_TERMINATE (1 << 6)
+#define VIA_SGD_FLAG (1 << 0)
+#define VIA_SGD_EOL (1 << 1)
+#define VIA_SGD_START (1 << 7)
+
#define VIA_CR80_FIRST_CODEC 0
#define VIA_CR80_SECOND_CODEC (1 << 30)
#define VIA_CR80_FIRST_CODEC_VALID (1 << 25)
+#define VIA_CR80_VALID (1 << 25)
#define VIA_CR80_SECOND_CODEC_VALID (1 << 27)
#define VIA_CR80_BUSY (1 << 24)
-#define VIA_CR80_READ_MODE (1 << 23)
+#define VIA_CR83_BUSY (1)
+#define VIA_CR83_FIRST_CODEC_VALID (1 << 1)
+#define VIA_CR80_READ (1 << 23)
#define VIA_CR80_WRITE_MODE 0
-#define VIA_CR80_REG_IDX(idx) (((idx) & 0x7E) << 16)
+#define VIA_CR80_REG_IDX(idx) ((((idx) & 0xFF) >> 1) << 16)
-struct via_info {
- struct address_info sb_data;
- struct address_info opl3_data;
- struct pci_dev *pdev;
- struct ac97_hwint ac97;
- int mixer_oss_dev;
- int have_ac97;
+/* h r puff n stuff */
+#define VIA_FMT_STEREO 0x01
+#define VIA_FMT_16BIT 0x02
+#define VIA_FMT_MASK 0x03
+#define VIA_DAC_SHIFT 0
+#define VIA_ADC_SHIFT 4
+
+/* undocumented(?) values for setting rate, from Via's source */
+#define VIA_SET_RATE_IN 0x00320000 /* set input rate */
+#define VIA_SET_RATE_OUT 0x002c0000 /* set output rate */
+
+
+/* scatter-gather DMA table entry, exactly as passed to hardware */
+struct via_sgd_table {
+ u32 addr;
+ u32 count; /* includes additional bits also */
};
-static struct via_info cards [MAX_CARDS];
-static unsigned num_cards = 0;
+#define VIA_EOL (1 << 31)
+#define VIA_FLAG (1 << 30)
-static const struct {
- int revision;
- const char *rev_name;
-} via_chip_revs[] __initdata = {
- { 0x10, "A" },
- { 0x11, "B" },
- { 0x12, "C" },
- { 0x13, "D" },
- { 0x14, "E" },
- { 0x20, "H" },
+enum via_channel_states {
+ sgd_stopped = 0,
+ sgd_in_progress = 1,
};
-static inline void via_ac97_write32 (struct pci_dev *pdev, int port, u32 data)
-{
- struct resource *rsrc = &pdev->resource[0];
- outw ((u16)data,rsrc->start+port);
- outw ((u16)(data>>16),rsrc->start+port+2);
-}
-static inline u32 via_ac97_read32 (struct pci_dev *pdev, int port)
-{
- struct resource *rsrc = &pdev->resource[0];
- return
- ((u32)inw (rsrc->start+port)) |
- (((u32)inw (rsrc->start+port+2)) << 16);
-}
+struct via_sgd_data {
+ dma_addr_t handle;
+ volatile void *cpuaddr;
+};
-/****************************************************************
- *
- * Intel Audio Codec '97 interface
- *
- *
- */
-
-static inline void via_ac97_wait_idle (struct pci_dev *pdev)
-{
- u32 tmp;
- int counter = VIA_COUNTER_LIMIT;
-
- DPRINTK ("ENTER\n");
- assert (pdev != NULL);
-
- do {
- tmp = via_ac97_read32 (pdev,VIA_AC97_CTRL);
- } while ((tmp & VIA_CR80_BUSY) && (counter-- > 0));
+struct via_channel {
+ unsigned rate; /* sample rate */
- DPRINTK ("EXIT%s\n", counter > 0 ? "" : ", counter limit reached");
-}
+ u8 pcm_fmt; /* VIA_PCM_FMT_xxx */
+
+ atomic_t state;
+ atomic_t buf_in_use;
+ atomic_t next_buf;
+
+ volatile struct via_sgd_table *sgtable;
+ dma_addr_t sgt_handle;
+
+ struct via_sgd_data sgbuf [VIA_DMA_BUFFERS];
+
+ wait_queue_head_t wait;
+
+ long iobase;
+};
-static int via_ac97_read_reg (struct ac97_hwint *dev, u8 reg)
-{
- u32 data;
- struct via_info *card;
+/* data stored for each chip */
+struct via_info {
struct pci_dev *pdev;
+ long baseaddr;
- DPRINTK ("ENTER\n");
+ struct ac97_codec ac97;
+ spinlock_t lock;
+ int card_num; /* unique card number, from 0 */
- assert (dev != NULL);
- assert (dev->driver_private != NULL);
+ int dev_dsp; /* /dev/dsp index from register_sound_dsp() */
+
+ unsigned rev_h : 1;
- card = (struct via_info *) dev->driver_private;
- pdev = card->pdev;
- assert (pdev != NULL);
+ wait_queue_head_t open_wait;
+ int open_mode;
+
+ struct via_channel ch_in;
+ struct via_channel ch_out;
+};
- via_ac97_wait_idle (pdev);
- data = VIA_CR80_FIRST_CODEC | VIA_CR80_FIRST_CODEC_VALID |
- VIA_CR80_READ_MODE | VIA_CR80_REG_IDX(reg);
- via_ac97_write32 (pdev,VIA_AC97_CTRL,data);
- via_ac97_wait_idle (pdev);
- data = via_ac97_read32 (pdev,VIA_AC97_CTRL);
-#if 0
- if (! (data & VIA_CR80_FIRST_CODEC_VALID)) {
- DPRINTK ("EXIT, first codec not valid, returning -1\n");
- return -1;
- }
-#endif
+/* number of cards, used for assigning unique numbers to cards */
+static unsigned via_num_cards = 0;
- DPRINTK ("EXIT, returning %d\n", data & 0xFFFF);
- return data & 0xFFFF;
-}
+/****************************************************************
+ *
+ * prototypes
+ *
+ *
+ */
+
+static int via_init_one (struct pci_dev *dev, const struct pci_device_id *id);
+static void via_remove_one (struct pci_dev *pdev);
-static int via_ac97_write_reg (struct ac97_hwint *dev, u8 reg, u16 value)
-{
- u32 data;
- struct via_info *card;
- struct pci_dev *pdev;
-
- DPRINTK ("ENTER\n");
+static ssize_t via_dsp_read(struct file *file, char *buffer, size_t count, loff_t *ppos);
+static ssize_t via_dsp_write(struct file *file, const char *buffer, size_t count, loff_t *ppos);
+static unsigned int via_dsp_poll(struct file *file, struct poll_table_struct *wait);
+static int via_dsp_ioctl (struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg);
+static int via_dsp_open (struct inode *inode, struct file *file);
+static int via_dsp_release(struct inode *inode, struct file *file);
+
+static u16 via_ac97_read_reg (struct ac97_codec *codec, u8 reg);
+static void via_ac97_write_reg (struct ac97_codec *codec, u8 reg, u16 value);
+static u8 via_ac97_wait_idle (struct via_info *card);
+static u32 via_ac97_wait_valid (struct via_info *card);
+
+static void via_chan_free (struct via_info *card, struct via_channel *chan);
+static void via_chan_clear (struct via_channel *chan);
+static void via_chan_pcm_fmt (struct via_info *card,
+ struct via_channel *chan, int reset);
- assert (dev != NULL);
- assert (dev->driver_private != NULL);
- card = (struct via_info *) dev->driver_private;
- pdev = card->pdev;
- assert (pdev != NULL);
+/****************************************************************
+ *
+ * Various data the driver needs
+ *
+ *
+ */
- via_ac97_wait_idle (pdev);
- data = VIA_CR80_FIRST_CODEC | VIA_CR80_FIRST_CODEC_VALID |
- VIA_CR80_WRITE_MODE | VIA_CR80_REG_IDX(reg) | value;
- via_ac97_write32 (pdev,VIA_AC97_CTRL,data);
-#if 0
- if (! (data & VIA_CR80_FIRST_CODEC_VALID)) {
- DPRINTK ("EXIT, first codec invalid, returning -1\n");
- return -1;
- }
-#endif
+static struct pci_device_id via_pci_tbl[] __initdata = {
+ { PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_5, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
+ { 0, },
+};
+MODULE_DEVICE_TABLE(pci,via_pci_tbl);
- DPRINTK ("EXIT, returning 0\n");
- return 0;
-}
+static struct pci_driver via_driver = {
+ name: VIA_MODULE_NAME,
+ id_table: via_pci_tbl,
+ probe: via_init_one,
+ remove: via_remove_one,
+};
-static int via_ac97_reset (struct ac97_hwint *dev)
-{
- struct via_info *card;
- struct pci_dev *pdev;
-
- DPRINTK ("ENTER\n");
- assert (dev != NULL);
- assert (dev->driver_private != NULL);
+/****************************************************************
+ *
+ * Low-level base 0 register read/write helpers
+ *
+ *
+ */
+
+static inline void via_chan_stop (int iobase)
+{
+ if (inb (iobase + VIA_PCM_STATUS) & VIA_SGD_ACTIVE)
+ outb (VIA_SGD_TERMINATE, iobase + VIA_PCM_CONTROL);
+}
- card = (struct via_info *) dev->driver_private;
- pdev = card->pdev;
- assert (pdev != NULL);
+static inline void via_chan_status_clear (int iobase)
+{
+ u8 tmp = inb (iobase + VIA_PCM_STATUS);
- pci_write_config_word (pdev, PCI_COMMAND, PCI_COMMAND_IO);
+ if (tmp != 0)
+ outb (tmp, iobase + VIA_PCM_STATUS);
+}
- DPRINTK ("EXIT, returning 0\n");
- return 0;
+static inline void sg_begin (struct via_channel *chan)
+{
+ outb (VIA_SGD_START, chan->iobase + VIA_PCM_CONTROL);
}
-static struct via_info *via_ac97_find_card_for_mixer (int dev)
+static inline int via_chan_bufs_in_use (struct via_channel *chan)
{
- int x;
-
- DPRINTK ("ENTER\n");
+ return atomic_read(&chan->next_buf) -
+ atomic_read(&chan->buf_in_use);
+}
- for (x = 0; x < num_cards; x++)
- if (cards[x].mixer_oss_dev == dev) {
- DPRINTK ("EXIT, returning %p\n", cards + x);
- return cards + x;
- }
- DPRINTK ("EXIT, returning 0\n");
- return NULL;
+static inline int via_chan_full (struct via_channel *chan)
+{
+ return (via_chan_bufs_in_use (chan) == VIA_DMA_BUFFERS);
}
-static int
-via_ac97_default_mixer_ioctl (int dev, unsigned int cmd, caddr_t arg)
+static inline int via_chan_empty (struct via_channel *chan)
{
- int rc;
- struct via_info *card = via_ac97_find_card_for_mixer (dev);
+ return (atomic_read(&chan->next_buf) ==
+ atomic_read(&chan->buf_in_use));
+}
+
+
+/****************************************************************
+ *
+ * Miscellaneous debris
+ *
+ *
+ */
+static void via_stop_everything (struct via_info *card)
+{
DPRINTK ("ENTER\n");
- if (card != NULL) {
- rc = ac97_mixer_ioctl (&card->ac97, cmd, arg);
- DPRINTK ("EXIT, returning %d\n", rc);
- return rc;
- }
-
- DPRINTK ("EXIT, returning -ENODEV\n");
- return -ENODEV;
+ assert (card != NULL);
+ /*
+ * terminate any existing operations on audio read/write channels
+ */
+ via_chan_stop (card->baseaddr + VIA_BASE0_PCM_OUT_CHAN);
+ via_chan_stop (card->baseaddr + VIA_BASE0_PCM_IN_CHAN);
+ via_chan_stop (card->baseaddr + VIA_BASE0_FM_OUT_CHAN);
+
+ /*
+ * clear any existing stops / flags (sanity check mainly)
+ */
+ via_chan_status_clear (card->baseaddr + VIA_BASE0_PCM_OUT_CHAN);
+ via_chan_status_clear (card->baseaddr + VIA_BASE0_PCM_IN_CHAN);
+ via_chan_status_clear (card->baseaddr + VIA_BASE0_FM_OUT_CHAN);
+
+ /*
+ * clear any enabled interrupt bits, reset to 8-bit mono PCM mode
+ */
+ outb (0, card->baseaddr + VIA_BASE0_PCM_OUT_CHAN);
+ outb (0, card->baseaddr + VIA_BASE0_PCM_IN_CHAN);
+ outb (0, card->baseaddr + VIA_BASE0_FM_OUT_CHAN);
+ DPRINTK ("EXIT\n");
}
-static struct mixer_operations via_ac97_mixer_operations =
-{
- "VIA82Cxxx",
- "via82cxxxAC97Mixer",
- via_ac97_default_mixer_ioctl
-};
-static int __init via_attach_ac97 (struct via_info *card)
+static int via_set_rate (struct via_info *card, unsigned rate, int inhale_deeply)
{
- int mixer;
- struct ac97_hwint *mdev;
+#if 0
+ unsigned long flags;
+ u32 status;
+ u8 status8;
+#endif
- DPRINTK ("ENTER\n");
+ DPRINTK ("ENTER, rate = %d, inhale = %s\n",
+ rate, inhale_deeply ? "yes" : "no");
- assert (card != NULL);
+ if (rate > 48000) rate = 48000;
+ if (rate < 4000) rate = 4000;
+
+#if 0
+ status8 = via_ac97_wait_idle (card);
+ if (status8 & VIA_CR83_BUSY) {
+ DPRINTK ("EXIT, status=0x%X, returning -EIO\n", status);
+ return -EIO;
+ }
- mdev = &card->ac97;
+ if (inhale_deeply) {
+ card->ch_in.rate = rate;
- memset (mdev, 0, sizeof (*mdev));
- mdev->reset_device = via_ac97_reset;
- mdev->read_reg = via_ac97_read_reg;
- mdev->write_reg = via_ac97_write_reg;
- mdev->driver_private = (void *) card;
+ spin_lock_irqsave (&card->lock, flags);
+ outl (VIA_SET_RATE_IN + rate,
+ card->baseaddr + VIA_BASE0_AC97_CTRL);
+ spin_unlock_irqrestore (&card->lock, flags);
+ } else {
+ card->ch_out.rate = rate;
- if (ac97_init (mdev)) {
- printk (KERN_ERR PFX "Unable to init AC97\n");
- DPRINTK ("EXIT, returning -1\n");
- return -1;
- }
- mixer = sound_alloc_mixerdev ();
- if (mixer < 0 || num_mixers >= MAX_MIXER_DEV) {
- printk (KERN_ERR PFX "Unable to alloc mixerdev\n");
- DPRINTK ("EXIT, returning -1\n");
- return -1;
+ spin_lock_irqsave (&card->lock, flags);
+ outl (VIA_SET_RATE_OUT + rate,
+ card->baseaddr + VIA_BASE0_AC97_CTRL);
+ spin_unlock_irqrestore (&card->lock, flags);
}
- mixer_devs[mixer] = &via_ac97_mixer_operations;
- card->mixer_oss_dev = mixer;
- /* Some reasonable default values. */
- ac97_set_mixer (mdev, SOUND_MIXER_VOLUME, (85 << 8) | 85);
- ac97_set_mixer (mdev, SOUND_MIXER_SPEAKER, 100);
- ac97_set_mixer (mdev, SOUND_MIXER_PCM, (65 << 8) | 65);
- ac97_set_mixer (mdev, SOUND_MIXER_CD, (65 << 8) | 65);
+#else
+ via_ac97_write_reg (&card->ac97, AC97_POWER_CONTROL,
+ (via_ac97_read_reg (&card->ac97, AC97_POWER_CONTROL) & ~0x0200) |
+ 0x0200);
+ via_ac97_write_reg (&card->ac97, AC97_PCM_FRONT_DAC_RATE, rate);
+ via_ac97_write_reg (&card->ac97, AC97_POWER_CONTROL,
+ via_ac97_read_reg (&card->ac97, AC97_POWER_CONTROL) & ~0x0200);
+#endif
- printk (KERN_INFO PFX "Initialized AC97 mixer\n");
-
- card->have_ac97 = mixer;
-
DPRINTK ("EXIT, returning 0\n");
- return 0;
+ return rate;
}
-static void via_unload_ac97 (struct via_info *card)
+static inline int via_set_adc_rate (struct via_info *card, int rate)
{
- DPRINTK ("ENTER\n");
-
- assert (card != NULL);
+ return via_set_rate (card, rate, 1);
+}
- if (card->have_ac97 >= 0)
- sound_unload_mixerdev (card->have_ac97);
- DPRINTK ("EXIT\n");
+static inline int via_set_dac_rate (struct via_info *card, int rate)
+{
+ return via_set_rate (card, rate, 0);
}
-#ifdef CONFIG_PROC_FS
-
/****************************************************************
*
- * /proc/driver/via82cxxx/info
+ * Channel-specific operations
*
*
*/
-
-static int via_info_read_proc (char *page, char **start, off_t off,
- int count, int *eof, void *data)
+
+static int via_chan_init (struct via_info *card,
+ struct via_channel *chan, long chan_ofs)
{
-#define YN(val,bit) (((val) & (bit)) ? "yes" : "no")
-
- int len = 0, i;
- u8 r40, r41, r42, r44;
+ int i;
+ unsigned long flags;
DPRINTK ("ENTER\n");
- len += sprintf (page+len, VIA_CARD_NAME "\n\n");
-
- for (i = 0; i < num_cards; i++) {
- pci_read_config_byte (cards[i].pdev, 0x40, &r40);
- pci_read_config_byte (cards[i].pdev, 0x42, &r41);
- pci_read_config_byte (cards[i].pdev, 0x42, &r42);
- pci_read_config_byte (cards[i].pdev, 0x44, &r44);
-
- len += sprintf (page+len,
- "40 AC97 Codec Ready: %s\n"
- " AC97 Codec Low-power: %s\n"
- " Secondary Codec Ready: %s\n"
-
- "41 AC-Link Interface Enable: %s\n"
-
- "42 Game port enabled: %s\n"
- " SoundBlaster enabled: %s\n"
- " FM enabled: %s\n"
- " MIDI enabled: %s\n"
-
- "44 AC-Link Interface Access: %s\n"
- " Secondary Codec Support: %s\n"
-
- "\n",
-
- YN (r40, VIA_CR40_AC97_READY),
- YN (r40, VIA_CR40_AC97_LOW_POWER),
- YN (r40, VIA_CR40_SECONDARY_READY),
-
- YN (r41, VIA_CR41_ACLINK_ENABLE),
-
- YN (r42, VIA_CR42_GAME_ENABLE),
- YN (r42, VIA_CR42_SB_ENABLE),
- YN (r42, VIA_CR42_FM_ENABLE),
- YN (r42, VIA_CR42_MIDI_ENABLE),
+ memset (chan, 0, sizeof (*chan));
- YN (r44, VIA_CR44_AC_LINK_ACCESS),
- YN (r44, VIA_CR44_SECOND_CODEC_SUPPORT)
-
- );
+ /* alloc DMA-able memory for scatter-gather table */
+ chan->sgtable = pci_alloc_consistent (card->pdev,
+ (sizeof (struct via_sgd_table) * VIA_DMA_BUFFERS),
+ &chan->sgt_handle);
+ if (!chan->sgtable) {
+ printk (KERN_ERR PFX "DMA table alloc fail, aborting\n");
+ DPRINTK ("EXIT\n");
+ return -ENOMEM;
}
- DPRINTK("EXIT, returning %d\n", len);
- return len;
+ memset ((void*)chan->sgtable, 0,
+ (sizeof (struct via_sgd_table) * VIA_DMA_BUFFERS));
-#undef YN
-}
+ /* alloc DMA-able memory for scatter-gather buffers */
+ for (i = 0; i < VIA_DMA_BUFFERS; i++) {
+ chan->sgbuf[i].cpuaddr =
+ pci_alloc_consistent (card->pdev, VIA_DMA_BUF_SIZE,
+ &chan->sgbuf[i].handle);
+
+ if (!chan->sgbuf[i].cpuaddr)
+ goto err_out_nomem;
+
+ if (i < (VIA_DMA_BUFFERS - 1))
+ chan->sgtable[i].count = cpu_to_le32 (VIA_DMA_BUF_SIZE | VIA_FLAG);
+ else
+ chan->sgtable[i].count = cpu_to_le32 (VIA_DMA_BUF_SIZE | VIA_EOL);
+ chan->sgtable[i].addr = cpu_to_le32 (chan->sgbuf[i].handle);
+#ifndef VIA_NDEBUG
+ memset (chan->sgbuf[i].cpuaddr, 0xBC, VIA_DMA_BUF_SIZE);
+#endif
-/****************************************************************
- *
- * /proc/driver/via82cxxx
- *
- *
- */
+#if 1
+ DPRINTK ("dmabuf #%d (h=%lx, 32(h)=%lx, v2p=%lx, a=%p)\n",
+ i, (long)chan->sgbuf[i].handle,
+ (long)chan->sgtable[i].addr,
+ virt_to_phys(chan->sgbuf[i].cpuaddr),
+ chan->sgbuf[i].cpuaddr);
+#endif
+ }
-static int __init via_init_proc (void)
-{
- DPRINTK ("ENTER\n");
+ init_waitqueue_head (&chan->wait);
- proc_mkdir ("driver/via_audio", 0);
- create_proc_read_entry ("driver/via_audio/info", 0, 0, via_info_read_proc, NULL);
+ chan->pcm_fmt = VIA_PCM_FMT_MASK;
+ chan->iobase = card->baseaddr + chan_ofs;
- DPRINTK("EXIT\n");
+ spin_lock_irqsave (&card->lock, flags);
+
+ /* stop any existing channel output */
+ via_chan_clear (chan);
+ via_chan_status_clear (chan->iobase);
+ via_chan_pcm_fmt (card, chan, 1);
+
+ spin_unlock_irqrestore (&card->lock, flags);
+
+ /* set location of DMA-able scatter-gather info table */
+ DPRINTK("outl (0x%X, 0x%04lX)\n",
+ cpu_to_le32 (chan->sgt_handle),
+ card->baseaddr + chan_ofs + VIA_PCM_TABLE_ADDR);
+
+ via_ac97_wait_idle (card);
+ outl (cpu_to_le32 (chan->sgt_handle),
+ card->baseaddr + chan_ofs + VIA_PCM_TABLE_ADDR);
+ udelay (20);
+ via_ac97_wait_idle (card);
+
+ DPRINTK("inl (0x%lX) = %x\n",
+ chan->iobase + VIA_PCM_TABLE_ADDR,
+ inl(chan->iobase + VIA_PCM_TABLE_ADDR));
+
+ DPRINTK ("EXIT\n");
return 0;
-}
+err_out_nomem:
+ printk (KERN_ERR PFX "DMA buffer alloc fail, aborting\n");
+ via_chan_free (card, chan);
+ DPRINTK ("EXIT\n");
+ return -ENOMEM;
+}
-static void __exit via_cleanup_proc (void)
+static void via_chan_free (struct via_info *card, struct via_channel *chan)
{
+ int i;
+ unsigned long flags;
+
DPRINTK ("ENTER\n");
- remove_proc_entry ("driver/via_audio/info", NULL);
- remove_proc_entry ("driver/via_audio", NULL);
- DPRINTK("EXIT\n");
+
+ synchronize_irq();
+
+ spin_lock_irqsave (&card->lock, flags);
+
+ /* stop any existing channel output */
+ via_chan_stop (chan->iobase);
+ via_chan_status_clear (chan->iobase);
+ via_chan_pcm_fmt (card, chan, 1);
+
+ spin_unlock_irqrestore (&card->lock, flags);
+
+ /* zero location of DMA-able scatter-gather info table */
+ via_ac97_wait_idle(card);
+ outl (0, chan->iobase + VIA_PCM_TABLE_ADDR);
+
+ for (i = 0; i < VIA_DMA_BUFFERS; i++)
+ if (chan->sgbuf[i].cpuaddr) {
+ pci_free_consistent (card->pdev, VIA_DMA_BUF_SIZE,
+ (void*)chan->sgbuf[i].cpuaddr,
+ chan->sgbuf[i].handle);
+ chan->sgbuf[i].cpuaddr = NULL;
+ chan->sgbuf[i].handle = 0;
+ }
+
+ if (chan->sgtable) {
+ pci_free_consistent (card->pdev,
+ (sizeof (struct via_sgd_table) * VIA_DMA_BUFFERS),
+ (void*)chan->sgtable, chan->sgt_handle);
+ chan->sgtable = NULL;
+ }
+
+ DPRINTK ("EXIT\n");
}
-#else
+static void via_chan_pcm_fmt (struct via_info *card,
+ struct via_channel *chan, int reset)
+{
+ DPRINTK ("ENTER, pcm_fmt=0x%02X, reset=%s\n",
+ chan->pcm_fmt, reset ? "yes" : "no");
-static inline int via_init_proc (void) { return 0; }
-static inline void via_cleanup_proc (void) {}
+ assert (card != NULL);
+ assert (chan != NULL);
-#endif /* CONFIG_PROC_FS */
+ if (reset)
+ /* reset to 8-bit mono mode */
+ chan->pcm_fmt = 0;
+
+ /* enable interrupts on FLAG and EOL */
+ chan->pcm_fmt |= VIA_CHAN_TYPE_MASK;
+
+ /* set interrupt select bits where applicable (PCM & FM out channels) */
+ if (chan == &card->ch_out)
+ chan->pcm_fmt |= VIA_CHAN_TYPE_INT_SELECT;
+ outb (chan->pcm_fmt, chan->iobase + 2);
-/****************************************************************
- *
- * Legacy SoundBlaster Pro, FM support via OSS
- *
- *
- */
+ DPRINTK ("EXIT, pcm_fmt = 0x%02X, reg = 0x%02X\n",
+ chan->pcm_fmt,
+ inb (chan->iobase + 2));
+}
-static void __init via_attach_sb(struct address_info *hw_config)
+
+static void via_chan_clear (struct via_channel *chan)
{
- DPRINTK ("ENTER\n");
+ via_chan_stop (chan->iobase);
+ atomic_set (&chan->state, sgd_stopped);
+ atomic_set (&chan->buf_in_use, 0);
+ atomic_set (&chan->next_buf, 0);
+}
- if(!sb_dsp_init(hw_config))
- hw_config->slots[0] = -1;
- DPRINTK("EXIT\n");
+static int via_chan_set_speed (struct via_info *card,
+ struct via_channel *chan, int val)
+{
+ DPRINTK ("ENTER, requested rate = %d\n", val);
+
+ via_chan_clear (chan);
+
+ val = via_set_rate (card, val, chan == &card->ch_in);
+
+ DPRINTK ("EXIT, returning %d\n", val);
+ return val;
}
-static int __init via_probe_sb(struct address_info *hw_config)
+static int via_chan_set_fmt (struct via_info *card,
+ struct via_channel *chan, int val)
{
- DPRINTK ("ENTER\n");
-
- if (check_region(hw_config->io_base, 16))
- {
- printk(KERN_DEBUG PFX "SBPro port 0x%x is already in use\n",
- hw_config->io_base);
- return 0;
+ DPRINTK ("ENTER, val=%s\n",
+ val == AFMT_U8 ? "AFMT_U8" :
+ val == AFMT_S16_LE ? "AFMT_S16_LE" :
+ "unknown");
+
+ via_chan_clear (chan);
+
+ switch (val) {
+ case AFMT_U8:
+ chan->pcm_fmt &= ~VIA_PCM_FMT_16BIT;
+ via_chan_pcm_fmt (card, chan, 0);
+ break;
+ case AFMT_S16_LE:
+ chan->pcm_fmt |= VIA_PCM_FMT_16BIT;
+ via_chan_pcm_fmt (card, chan, 0);
+ break;
+ default:
+ printk (KERN_WARNING PFX "unknown AFMT\n");
+ val = -EINVAL;
+ break;
}
- DPRINTK("EXIT after sb_dsp_detect\n");
- return sb_dsp_detect(hw_config, 0, 0, NULL);
+
+ DPRINTK ("EXIT, returning %d\n", val);
+ return val;
}
-static void __exit via_unload_sb(struct address_info *hw_config)
+static int via_chan_set_stereo (struct via_info *card,
+ struct via_channel *chan, int val)
{
- DPRINTK ("ENTER\n");
+ DPRINTK ("ENTER, channels = %d\n", val);
- if(hw_config->slots[0] != -1)
- sb_dsp_unload(hw_config, 1);
+ via_chan_clear (chan);
+
+ switch (val) {
- DPRINTK("EXIT\n");
+ /* mono */
+ case 1:
+ chan->pcm_fmt &= ~VIA_PCM_FMT_STEREO;
+ via_chan_pcm_fmt (card, chan, 0);
+ break;
+
+ /* stereo */
+ case 2:
+ chan->pcm_fmt |= VIA_PCM_FMT_STEREO;
+ via_chan_pcm_fmt (card, chan, 0);
+ break;
+
+ /* unknown */
+ default:
+ printk (KERN_WARNING PFX "unknown number of channels\n");
+ val = -EINVAL;
+ break;
+ }
+
+ DPRINTK ("EXIT, returning %d\n", val);
+ return val;
}
-static const struct {
- int sb_irq,
- sb_dma,
- midi_base,
- sb_io_base;
-} via_pnp_data[] __initdata = {
- { 5, 0, 0x300, 0x220 },
- { 7, 1, 0x310, 0x240 },
- { 9, 2, 0x320, 0x260 },
- { 10,3, 0x330, 0x280 },
-};
+#if 0
+static void via_chan_dump_bufs (struct via_channel *chan)
+{
+ int i;
+
+ for (i = 0; i < VIA_DMA_BUFFERS; i++) {
+ DPRINTK ("#%02d: addr=%x, count=%u, flag=%d, eol=%d\n",
+ i, chan->sgtable[i].addr,
+ chan->sgtable[i].count & 0x00FFFFFF,
+ chan->sgtable[i].count & VIA_FLAG ? 1 : 0,
+ chan->sgtable[i].count & VIA_EOL ? 1 : 0);
+ }
+ DPRINTK ("buf_in_use = %d, nextbuf = %d\n",
+ atomic_read (&chan->buf_in_use),
+ atomic_read (&chan->next_buf));
+}
+#endif
/****************************************************************
*
- * Chip setup and kernel registration
+ * Interface to ac97-codec module
*
*
*/
-
-static int __init via82cxxx_install (struct pci_dev *pcidev)
+
+static u8 via_ac97_wait_idle (struct via_info *card)
{
- int sb_io_base;
- int sb_irq;
- int sb_dma;
- int midi_base, rc;
u8 tmp8;
- struct via_info *card = &cards[num_cards];
+ int counter = VIA_COUNTER_LIMIT;
- DPRINTK ("ENTER\n");
+ DPRINTK ("ENTER/EXIT\n");
- card->pdev = pcidev;
- card->have_ac97 = -1;
+ assert (card != NULL);
+ assert (card->pdev != NULL);
- /* turn off legacy features, if not already */
- pci_read_config_byte (pcidev, VIA_FUNC_ENABLE, &tmp8);
- tmp8 &= ~(VIA_CR42_SB_ENABLE | VIA_CR42_MIDI_ENABLE |
- VIA_CR42_FM_ENABLE);
- pci_write_config_byte (pcidev, VIA_FUNC_ENABLE, tmp8);
+ do {
+ if (current->need_resched)
+ schedule ();
+ else
+ udelay (10);
+
+ spin_lock_irq (&card->lock);
+ tmp8 = inb (card->baseaddr + 0x83);
+ spin_unlock_irq (&card->lock);
+ } while ((tmp8 & VIA_CR83_BUSY) && (counter-- > 0));
- /*
- * try to init AC97 mixer device
+ return tmp8;
+}
+
+
+static u32 via_ac97_wait_valid (struct via_info *card)
+{
+ u32 tmp;
+ int counter = VIA_COUNTER_LIMIT;
+
+ DPRINTK ("ENTER\n");
+
+ assert (card != NULL);
+ assert (card->pdev != NULL);
+
+ do {
+ if (current->need_resched)
+ schedule ();
+
+ spin_lock_irq (&card->lock);
+ tmp = inl (card->baseaddr + VIA_BASE0_AC97_CTRL);
+ spin_unlock_irq (&card->lock);
+
+ udelay (10);
+
+ if (tmp & VIA_CR80_FIRST_CODEC_VALID) {
+ DPRINTK ("EXIT valid, tmp=0x%X, cnt=%d\n", tmp, counter);
+ return tmp;
+ }
+ } while ((tmp & VIA_CR80_BUSY) && (counter-- > 0));
+
+ DPRINTK ("EXIT, tmp=0x%X, cnt=%d%s\n", tmp, counter,
+ counter > 0 ? "" : ", counter limit reached");
+ return tmp;
+}
+
+
+static u16 via_ac97_read_reg (struct ac97_codec *codec, u8 reg)
+{
+ u32 data;
+ struct via_info *card;
+ int counter;
+
+ DPRINTK ("ENTER\n");
+
+ assert (codec != NULL);
+ assert (codec->private_data != NULL);
+
+ card = codec->private_data;
+
+ data = (reg << 16) | VIA_CR80_READ;
+
+ outl (data, card->baseaddr + VIA_BASE0_AC97_CTRL);
+ udelay (20);
+
+ for (counter = VIA_COUNTER_LIMIT; counter > 0; counter--) {
+ if (inl (card->baseaddr + 0x80) & VIA_CR80_VALID)
+ goto out;
+ udelay(10);
+ if (current->need_resched)
+ schedule ();
+ }
+
+ printk (KERN_WARNING PFX "timeout while reading AC97 codec\n");
+ goto err_out;
+
+out:
+ data = inl (card->baseaddr + 0x80);
+ outb (0x02, card->baseaddr + 0x83);
+
+ if (((data & 0x007F0000) >> 16) == reg) {
+ DPRINTK ("EXIT, success, data=0x%x, retval=0x%x\n",
+ data, data & 0x0000FFFF);
+ return data & 0x0000FFFF;
+ }
+
+ DPRINTK ("WARNING: not our index: reg=0x%x, newreg=0x%x\n",
+ reg, ((data & 0x007F0000) >> 16));
+
+err_out:
+ DPRINTK ("EXIT, returning 0\n");
+ return 0;
+}
+
+
+static void via_ac97_write_reg (struct ac97_codec *codec, u8 reg, u16 value)
+{
+ u32 data;
+ struct via_info *card;
+ int counter;
+
+ DPRINTK ("ENTER\n");
+
+ assert (codec != NULL);
+ assert (codec->private_data != NULL);
+
+ card = codec->private_data;
+
+ data = (reg << 16) + value;
+ outl (data, card->baseaddr + VIA_BASE0_AC97_CTRL);
+ udelay (20);
+
+ for (counter = VIA_COUNTER_LIMIT; counter > 0; counter--) {
+ if ((inb (card->baseaddr + 0x83) & VIA_CR83_BUSY) == 0)
+ goto out;
+ udelay(10);
+ if (current->need_resched)
+ schedule ();
+ }
+
+ printk (KERN_WARNING PFX "timeout after AC97 codec write\n");
+
+out:
+ DPRINTK ("EXIT\n");
+}
+
+
+static int via_mixer_open (struct inode *inode, struct file *file)
+{
+ int minor = MINOR(inode->i_rdev);
+ struct via_info *card;
+ struct pci_dev *pdev;
+ struct pci_driver *drvr;
+
+ DPRINTK ("ENTER\n");
+
+ MOD_INC_USE_COUNT;
+
+ pci_for_each_dev(pdev) {
+ drvr = pci_dev_driver (pdev);
+ if (drvr == &via_driver) {
+ assert (pdev->driver_data != NULL);
+
+ card = pdev->driver_data;
+ if (card->ac97.dev_mixer == minor)
+ goto match;
+ }
+ }
+
+ DPRINTK ("EXIT, returning -ENODEV\n");
+ MOD_DEC_USE_COUNT;
+ return -ENODEV;
+
+match:
+ file->private_data = &card->ac97;
+
+ DPRINTK ("EXIT, returning 0\n");
+ return 0;
+}
+
+
+static int via_mixer_release (struct inode *inode, struct file *file)
+{
+ DPRINTK ("ENTER\n");
+
+ MOD_DEC_USE_COUNT;
+
+ DPRINTK ("EXIT, returning 0\n");
+ return 0;
+}
+
+
+static int via_mixer_ioctl (struct inode *inode, struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ struct ac97_codec *codec = file->private_data;
+ int rc;
+
+ assert (codec != NULL);
+
+ rc = codec->mixer_ioctl(codec, cmd, arg);
+
+ return rc;
+}
+
+
+static loff_t via_llseek(struct file *file, loff_t offset, int origin)
+{
+ DPRINTK ("ENTER\n");
+
+ DPRINTK("EXIT, returning -ESPIPE\n");
+ return -ESPIPE;
+}
+
+
+static struct file_operations via_mixer_fops = {
+ open: via_mixer_open,
+ release: via_mixer_release,
+ llseek: via_llseek,
+ ioctl: via_mixer_ioctl,
+};
+
+
+static struct {
+ u8 reg;
+ u16 data;
+} mixer_init_vals[] __devinitdata = {
+ { 0x2, 0x404 },
+ { 0x4, 0x404 },
+ { 0x6, 0x404 },
+ { 0x18, 0x404 },
+ { 0x10, 0x404 },
+ { 0x1a, 0x404 },
+ { 0x1c, 0x404 },
+ { 0x1a, 0x404 },
+ { 0x1c, 0xc0c },
+ { 0x12, 0x808 },
+ { 0x10, 0x808 },
+ { 0xe, 0x2 },
+ { 0x2, 0x808 },
+ { 0x18, 0x808 },
+};
+
+
+static int __init via_ac97_reset (struct via_info *card)
+{
+ struct pci_dev *pdev = card->pdev;
+ u8 tmp8;
+ u16 tmp16;
+ size_t idx;
+
+ DPRINTK ("ENTER\n");
+
+ assert (pdev != NULL);
+
+#ifndef NDEBUG
+ {
+ u8 r40,r41,r42,r43,r44,r48;
+ pci_read_config_byte (card->pdev, 0x40, &r40);
+ pci_read_config_byte (card->pdev, 0x41, &r41);
+ pci_read_config_byte (card->pdev, 0x42, &r42);
+ pci_read_config_byte (card->pdev, 0x43, &r43);
+ pci_read_config_byte (card->pdev, 0x44, &r44);
+ pci_read_config_byte (card->pdev, 0x48, &r48);
+ DPRINTK("PCI config: %02X %02X %02X %02X %02X %02X\n",
+ r40,r41,r42,r43,r44,r48);
+
+ spin_lock_irq (&card->lock);
+ DPRINTK ("regs==%02X %02X %02X %08X %08X %08X %08X\n",
+ inb (card->baseaddr + 0x00),
+ inb (card->baseaddr + 0x01),
+ inb (card->baseaddr + 0x02),
+ inl (card->baseaddr + 0x04),
+ inl (card->baseaddr + 0x0C),
+ inl (card->baseaddr + 0x80),
+ inl (card->baseaddr + 0x84));
+ spin_unlock_irq (&card->lock);
+
+ }
+#endif
+
+#if 1
+
+ /*
+ * reset AC97 controller: enable, disable, enable
+ * pause after each command for good luck
+ */
+ pci_write_config_byte (pdev, VIA_ACLINK_CTRL, VIA_CR41_AC97_ENABLE |
+ VIA_CR41_AC97_RESET | VIA_CR41_AC97_WAKEUP);
+ udelay (100);
+
+ pci_write_config_byte (pdev, VIA_ACLINK_CTRL, 0);
+ udelay (100);
+
+ pci_write_config_byte (pdev, VIA_ACLINK_CTRL,
+ VIA_CR41_AC97_ENABLE | VIA_CR41_PCM_ENABLE |
+ VIA_CR41_VRA | VIA_CR41_AC97_RESET);
+ udelay (100);
+#endif
+
+#if 0
+ /*
+ * reset AC97 controller
*/
- rc = via_attach_ac97 (card);
+ pci_read_config_byte(pdev, 0x08, &tmp8);
+ if ((tmp8 & 0xff) >= 0x20 ) {
+ pci_read_config_byte(pdev, 0x42, &tmp8);
+ pci_write_config_byte(pdev, 0x42,(tmp8 & 0x3f));
+ }
+ udelay (100);
+
+ /* init other mixer defaults */
+ for (idx = 0; idx < arraysize(mixer_init_vals); idx++) {
+ via_ac97_write_reg (&card->ac97,
+ mixer_init_vals[idx].reg,
+ mixer_init_vals[idx].data);
+ udelay (20);
+ }
+
+ pci_write_config_byte (pdev, 0x41, 0xc0);
+ udelay (10);
+ pci_read_config_byte (pdev, 0x41, &tmp8);
+ udelay (10);
+ pci_write_config_byte (pdev, 0x41, tmp8 | 0x0f);
+ udelay (10);
+
+#endif
+
+ /* disable legacy stuff */
+ pci_write_config_byte (pdev, 0x42, 0x00);
+ udelay(10);
+
+ /* route FM trap to IRQ, disable FM trap */
+ pci_write_config_byte (pdev, 0x48, 0x05);
+ udelay(10);
+
+ /* disable all codec GPI interrupts */
+ outl (0, pci_resource_start (pdev, 0) + 0x8C);
+
+#if 0 /* ALSA */
+ via_ac97_write_reg (&card->ac97, AC97_EXTENDED_STATUS, 0x0009);
+#if 0
+ via_ac97_write_reg (&card->ac97, AC97_POWER_CONTROL,
+ via_ac97_read_reg (&card->ac97, AC97_POWER_CONTROL) | 0x0300);
+#endif
+ via_ac97_write_reg (&card->ac97, AC97_EXTENDED_STATUS,
+ via_ac97_read_reg (&card->ac97, AC97_EXTENDED_STATUS) | 0xe800);
+#endif
+
+ /* enable variable rate */
+ tmp16 = via_ac97_read_reg (&card->ac97, 0x2A);
+ via_ac97_write_reg (&card->ac97, 0x2A, tmp16 | 0x01);
+
+ /* boost headphone vol if disabled */
+ tmp16 = via_ac97_read_reg (&card->ac97, AC97_HEADPHONE_VOL);
+ if (tmp16 == 0)
+ via_ac97_write_reg (&card->ac97, AC97_HEADPHONE_VOL, 0x1F1F);
+
+ pci_read_config_byte (pdev, VIA_ACLINK_CTRL, &tmp8);
+ if ((tmp8 & (VIA_CR41_AC97_ENABLE | VIA_CR41_AC97_RESET)) == 0) {
+ printk (KERN_ERR PFX "cannot enable AC97 controller, aborting\n");
+ DPRINTK ("EXIT, tmp8=%X, returning -ENODEV\n", tmp8);
+ return -ENODEV;
+ }
+
+ DPRINTK ("EXIT, returning 0\n");
+ return 0;
+}
+
+
+static int __init via_ac97_init (struct via_info *card)
+{
+ int rc;
+ u16 tmp16;
+
+ DPRINTK ("ENTER\n");
+
+ assert (card != NULL);
+
+ memset (&card->ac97, 0, sizeof (card->ac97));
+ card->ac97.private_data = card;
+ card->ac97.codec_read = via_ac97_read_reg;
+ card->ac97.codec_write = via_ac97_write_reg;
+
+ card->ac97.dev_mixer = register_sound_mixer (&via_mixer_fops, -1);
+ if (card->ac97.dev_mixer < 0) {
+ printk (KERN_ERR PFX "unable to register AC97 mixer, aborting\n");
+ DPRINTK("EXIT, returning -EIO\n");
+ return -EIO;
+ }
+
+ rc = via_ac97_reset (card);
if (rc) {
- printk (KERN_WARNING PFX
- "AC97 init failed, SB legacy mode only\n");
+ printk (KERN_ERR PFX "unable to reset AC97 codec, aborting\n");
+ goto err_out;
+ }
+
+ if (ac97_probe_codec (&card->ac97) == 0) {
+ printk (KERN_ERR PFX "unable to probe AC97 codec, aborting\n");
+ rc = -EIO;
+ goto err_out;
+ }
+
+ tmp16 = via_ac97_read_reg (&card->ac97, 0x2A);
+ via_ac97_write_reg (&card->ac97, 0x2A, tmp16 | 0x01);
+
+ DPRINTK ("EXIT, returning 0\n");
+ return 0;
+
+err_out:
+ unregister_sound_mixer (card->ac97.dev_mixer);
+ DPRINTK("EXIT, returning %d\n", rc);
+ return rc;
+}
+
+
+static void via_ac97_cleanup (struct via_info *card)
+{
+ DPRINTK("ENTER\n");
+
+ assert (card != NULL);
+ assert (card->ac97.dev_mixer >= 0);
+
+ unregister_sound_mixer (card->ac97.dev_mixer);
+
+ DPRINTK("EXIT\n");
+}
+
+
+
+/****************************************************************
+ *
+ * Interrupt-related code
+ *
+ */
+
+static inline void via_interrupt_write (struct via_channel *chan)
+{
+ assert (atomic_read(&chan->buf_in_use) <
+ atomic_read(&chan->next_buf));
+
+ /* XXX sanity check: read h/w counter to
+ * ensure no lost frames */
+
+ atomic_inc (&chan->buf_in_use);
+
+ /* if SG ptr catches up with userland ptr, stop playback */
+ if (atomic_read(&chan->buf_in_use) == atomic_read(&chan->next_buf)) {
+ atomic_set (&chan->state, sgd_stopped);
+ via_chan_stop (chan->iobase);
+ }
+
+ /* wake up anybody listening */
+ if (waitqueue_active (&chan->wait))
+ wake_up (&chan->wait);
+}
+
+
+
+static void via_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+ struct via_info *card = dev_id;
+ struct via_channel *chan;
+ u8 status;
+ int unhandled = 1;
+ static long intcount = 0;
+
+ assert (irq == card->pdev->irq);
+
+ intcount++;
+
+ status = inb (card->baseaddr + 0x00);
+ if (status) {
+ assert (card->open_mode & FMODE_WRITE);
+
+ chan = &card->ch_out;
+ unhandled = 0;
+
+ if (status & VIA_SGD_FLAG) {
+ assert ((status & VIA_SGD_EOL) == 0);
+ outb (VIA_SGD_FLAG, chan->iobase + 0x00);
+ DPRINTK("FLAG intr, status=0x%02X, intcount=%ld\n",
+ status, intcount);
+ via_interrupt_write (chan);
+ }
+
+ if (status & VIA_SGD_EOL) {
+ assert ((status & VIA_SGD_FLAG) == 0);
+ outb (VIA_SGD_EOL, chan->iobase + 0x00);
+ DPRINTK("EOL intr, status=0x%02X, intcount=%ld\n",
+ status, intcount);
+ via_interrupt_write (chan);
+ }
+
+ if (status & VIA_SGD_STOPPED) {
+ outb (VIA_SGD_STOPPED, chan->iobase + 0x00);
+ DPRINTK("STOPPED intr, status=0x%02X, intcount=%ld\n",
+ status, intcount);
+ }
+
+#if 0
+ via_chan_dump_bufs (&card->ch_out);
+#endif
+ }
+
+ if (unhandled)
+ printk (KERN_WARNING PFX "unhandled interrupt, st=%02x, st32=%08x\n",
+ status, inl (card->baseaddr + 0x84));
+}
+
+
+static void via_interrupt_disable (struct via_info *card)
+{
+ u8 tmp8;
+ unsigned long flags;
+
+ DPRINTK ("ENTER\n");
+
+ assert (card != NULL);
+
+ spin_lock_irqsave (&card->lock, flags);
+
+ pci_read_config_byte (card->pdev, VIA_FM_NMI_CTRL, &tmp8);
+ if ((tmp8 & VIA_CR48_FM_TRAP_TO_NMI) == 0) {
+ tmp8 |= VIA_CR48_FM_TRAP_TO_NMI;
+ pci_write_config_byte (card->pdev, VIA_FM_NMI_CTRL, tmp8);
+ }
+
+ outb (inb (card->baseaddr + VIA_BASE0_PCM_OUT_CHAN_TYPE) &
+ VIA_INT_DISABLE_MASK,
+ card->baseaddr + VIA_BASE0_PCM_OUT_CHAN_TYPE);
+ outb (inb (card->baseaddr + VIA_BASE0_PCM_IN_CHAN_TYPE) &
+ VIA_INT_DISABLE_MASK,
+ card->baseaddr + VIA_BASE0_PCM_IN_CHAN_TYPE);
+ outb (inb (card->baseaddr + VIA_BASE0_FM_OUT_CHAN_TYPE) &
+ VIA_INT_DISABLE_MASK,
+ card->baseaddr + VIA_BASE0_FM_OUT_CHAN_TYPE);
+
+ spin_unlock_irqrestore (&card->lock, flags);
+
+ DPRINTK ("EXIT\n");
+}
+
+
+static int via_interrupt_init (struct via_info *card)
+{
+ DPRINTK ("ENTER\n");
+
+ assert (card != NULL);
+ assert (card->pdev != NULL);
+
+ /* check for sane IRQ number. can this ever happen? */
+ if (card->pdev->irq < 2) {
+ printk (KERN_ERR PFX "insane IRQ %d, aborting\n",
+ card->pdev->irq);
+ DPRINTK ("EXIT, returning -EIO\n");
+ return -EIO;
+ }
+
+ if (request_irq (card->pdev->irq, via_interrupt, SA_SHIRQ, VIA_MODULE_NAME, card)) {
+ printk (KERN_ERR PFX "unable to obtain IRQ %d, aborting\n",
+ card->pdev->irq);
+ DPRINTK ("EXIT, returning -EBUSY\n");
+ return -EBUSY;
+ }
+
+ /* we don't want interrupts until we're opened */
+ via_interrupt_disable (card);
+
+ DPRINTK ("EXIT, returning 0\n");
+ return 0;
+}
+
+
+static void via_interrupt_cleanup (struct via_info *card)
+{
+ DPRINTK ("ENTER\n");
+
+ assert (card != NULL);
+ assert (card->pdev != NULL);
+
+ via_interrupt_disable (card);
+
+ free_irq (card->pdev->irq, card);
+
+ DPRINTK ("EXIT\n");
+}
+
+
+/****************************************************************
+ *
+ * OSS DSP device
+ *
+ */
+
+static struct file_operations via_dsp_fops = {
+ open: via_dsp_open,
+ release: via_dsp_release,
+ read: via_dsp_read,
+ write: via_dsp_write,
+ poll: via_dsp_poll,
+ llseek: via_llseek,
+ ioctl: via_dsp_ioctl,
+};
+
+
+static int __init via_dsp_init (struct via_info *card)
+{
+ u8 tmp8;
+
+ DPRINTK ("ENTER\n");
+
+ assert (card != NULL);
+
+ /* turn off legacy features, if not already */
+ pci_read_config_byte (card->pdev, VIA_FUNC_ENABLE, &tmp8);
+ tmp8 &= ~(VIA_CR42_SB_ENABLE | VIA_CR42_MIDI_ENABLE |
+ VIA_CR42_FM_ENABLE);
+ pci_write_config_byte (card->pdev, VIA_FUNC_ENABLE, tmp8);
+
+ via_stop_everything (card);
+
+ card->dev_dsp = register_sound_dsp (&via_dsp_fops, -1);
+ if (card->dev_dsp < 0) {
+ DPRINTK ("EXIT, returning -ENODEV\n");
+ return -ENODEV;
+ }
+ DPRINTK ("EXIT, returning 0\n");
+ return 0;
+}
+
+
+static void via_dsp_cleanup (struct via_info *card)
+{
+ DPRINTK ("ENTER\n");
+
+ assert (card != NULL);
+ assert (card->dev_dsp >= 0);
+
+ via_stop_everything (card);
+
+ unregister_sound_dsp (card->dev_dsp);
+
+ DPRINTK ("EXIT\n");
+}
+
+
+static ssize_t via_dsp_read(struct file *file, char *buffer, size_t count, loff_t *ppos)
+{
+ struct via_info *card;
+
+ DPRINTK ("ENTER\n");
+
+ assert (file != NULL);
+ assert (buffer != NULL);
+ card = file->private_data;
+ assert (card != NULL);
+
+ DPRINTK("EXIT, returning -EINVAL\n");
+ return -EINVAL;
+}
+
+
+
+#define sgcount(n) (sgtable[(n)].count & 0x00FFFFFF)
+#define NEXTBUF (atomic_read(&chan->next_buf) % VIA_DMA_BUFFERS)
+#define BUF_IN_USE (atomic_read(&chan->buf_in_use) % VIA_DMA_BUFFERS)
+#define STATE_STOPPED (atomic_read (state) == sgd_stopped)
+#define STATE_STARTED (atomic_read (state) == sgd_in_progress)
+static ssize_t via_dsp_do_write (struct via_info *card,
+ const char *userbuf, size_t count,
+ int non_blocking)
+{
+ const char *orig_userbuf = userbuf;
+ struct via_channel *chan = &card->ch_out;
+ volatile struct via_sgd_table *sgtable = chan->sgtable;
+ atomic_t *state = &chan->state;
+ size_t size;
+ int nextbuf, prevbuf, n, realcount;
+ ssize_t rc;
+
+ while (count > 0) {
+ if (current->need_resched)
+ schedule ();
+
+ spin_lock_irq (&card->lock);
+ DPRINTK ("regs==%02X %02X %02X %08X %08X %08X %08X\n",
+ inb (card->baseaddr + 0x00),
+ inb (card->baseaddr + 0x01),
+ inb (card->baseaddr + 0x02),
+ inl (card->baseaddr + 0x04),
+ inl (card->baseaddr + 0x0C),
+ inl (card->baseaddr + 0x80),
+ inl (card->baseaddr + 0x84));
+ spin_unlock_irq (&card->lock);
+
+ size = (count < VIA_DMA_BUF_SIZE) ? count : VIA_DMA_BUF_SIZE;
+
+ /* case 1: SGD not active, list is ours for the mangling */
+
+ if (STATE_STOPPED) {
+ DPRINTK ("case 1\n");
+
+ if (copy_from_user ((void*)chan->sgbuf[0].cpuaddr,
+ userbuf, size))
+ return -EFAULT;
+
+ assert (sgtable[0].addr == cpu_to_le32 (chan->sgbuf[0].handle));
+ sgtable[0].count = size | VIA_FLAG;
+
+ atomic_set (state, sgd_in_progress);
+ atomic_set (&chan->buf_in_use, 0);
+ atomic_set (&chan->next_buf, 1);
+
+ count -= size;
+ userbuf += size;
+
+ spin_lock_irq (&card->lock);
+ sg_begin (chan);
+ spin_unlock_irq (&card->lock);
+
+ continue;
+ }
+
+ nextbuf = NEXTBUF;
+ if (nextbuf)
+ prevbuf = nextbuf - 1;
+ else
+ prevbuf = VIA_DMA_BUFFERS - 1;
+
+ /* case 2: if final buffer is (a) a fragment, and (b) not
+ * currently being consumed by the SGD engine, then append
+ * as much data as possible to the fragment. */
+
+ realcount = sgcount(prevbuf);
+ if (STATE_STARTED && (prevbuf != BUF_IN_USE) &&
+ (realcount < VIA_DMA_BUF_SIZE)) {
+ DPRINTK ("case 2\n");
+ DPRINTK ("st=%d, fb=%d -- nb=%d, pb=%d, n=%d, rc=%d\n",
+ atomic_read (state),
+ BUF_IN_USE,
+ nextbuf,
+ prevbuf,
+ prevbuf /* n */,
+ realcount);
+
+ n = prevbuf;
+
+ if ((VIA_DMA_BUF_SIZE - realcount) < size)
+ size = VIA_DMA_BUF_SIZE - realcount;
+
+ if (copy_from_user ((void*)(chan->sgbuf[n].cpuaddr +
+ realcount),
+ userbuf, size))
+ return -EFAULT;
+
+ /* slack way to try and prevent races */
+ if (prevbuf == BUF_IN_USE || !STATE_STARTED)
+ continue;
+
+ assert (sgtable[n].addr == cpu_to_le32 (chan->sgbuf[n].handle));
+ if (n == (VIA_DMA_BUFFERS - 1))
+ sgtable[n].count = (realcount + size) | VIA_EOL;
+ else
+ sgtable[n].count = (realcount + size) | VIA_FLAG;
+
+ count -= size;
+ userbuf += size;
+ continue;
+ }
+
+ /* case 3: if there are buffers left, use one
+ * XXX needs more review for possible races */
+
+ else if (STATE_STARTED && !via_chan_full (chan)) {
+ DPRINTK ("case 3\n");
+ DPRINTK ("st=%d, fb=%d -- nb=%d, pb=%d, n=%d\n",
+ atomic_read (state),
+ BUF_IN_USE,
+ nextbuf,
+ prevbuf,
+ nextbuf /* n */);
+
+ n = nextbuf;
+
+ if (copy_from_user ((void*)chan->sgbuf[n].cpuaddr,
+ userbuf, size))
+ return -EFAULT;
+
+ if (n == (VIA_DMA_BUFFERS - 1))
+ sgtable[n].count = size | VIA_EOL;
+ else
+ sgtable[n].count = size | VIA_FLAG;
+
+ /* if SGD stopped during data copy or SG table update,
+ * then loop back to the beginning without updating
+ * any pointers.
+ * ie. slack way to prevent race */
+ if (!STATE_STARTED)
+ continue;
+
+ atomic_inc (&chan->next_buf);
+
+ count -= size;
+ userbuf += size;
+ continue;
+ }
+
+ /* case 4, final SGT active case: no free buffers, wait for one */
+
+ else {
+ DPRINTK ("case 4\n");
+ DPRINTK ("st=%d, fb=%d -- nb=%d, pb=%d\n",
+ atomic_read (state),
+ BUF_IN_USE,
+ nextbuf,
+ prevbuf);
+
+ /* if playback stopped, no need to sleep */
+ if (!STATE_STARTED)
+ continue;
+
+ /* if buffer free, no need to sleep */
+ if (!via_chan_full (chan))
+ continue;
+
+ if (non_blocking) {
+ rc = userbuf - orig_userbuf;
+ if (rc == 0)
+ rc = -EAGAIN;
+ return rc;
+ }
+
+ DPRINTK ("sleeping\n");
+ interruptible_sleep_on (&chan->wait);
+ if (signal_pending (current))
+ return -ERESTARTSYS;
+ }
+ }
+
+#if 0
+ {
+ u8 r40,r41,r42,r43,r44,r48;
+ pci_read_config_byte (card->pdev, 0x40, &r40);
+ pci_read_config_byte (card->pdev, 0x41, &r41);
+ pci_read_config_byte (card->pdev, 0x42, &r42);
+ pci_read_config_byte (card->pdev, 0x43, &r43);
+ pci_read_config_byte (card->pdev, 0x44, &r44);
+ pci_read_config_byte (card->pdev, 0x48, &r48);
+ DPRINTK("PCI config: %02X %02X %02X %02X %02X %02X\n",
+ r40,r41,r42,r43,r44,r48);
+ }
+#endif
+
+ DPRINTK ("EXIT, returning %d\n",
+ userbuf - orig_userbuf);
+ return userbuf - orig_userbuf;
+}
+#undef sgcount
+#undef NEXTBUF
+#undef BUF_IN_USE
+#undef STATE_STOPPED
+#undef STATE_STARTED
+
+
+static ssize_t via_dsp_write(struct file *file, const char *buffer, size_t count, loff_t *ppos)
+{
+ struct via_info *card;
+ ssize_t rc;
+
+ DPRINTK ("ENTER, file=%p, buffer=%p, count=%u, ppos=%lu\n",
+ file, buffer, count, ppos ? ((unsigned long)*ppos) : 0);
+
+ assert (file != NULL);
+ assert (buffer != NULL);
+ card = file->private_data;
+ assert (card != NULL);
+
+ if (ppos != &file->f_pos) {
+ DPRINTK ("EXIT, returning -ESPIPE\n");
+ return -ESPIPE;
+ }
+
+ rc = via_dsp_do_write (card, buffer, count, (file->f_flags & O_NONBLOCK));
+
+ DPRINTK("EXIT, returning %ld\n",(long) rc);
+ return rc;
+}
+
+
+static unsigned int via_dsp_poll(struct file *file, struct poll_table_struct *wait)
+{
+ struct via_info *card;
+ unsigned int mask = 0;
+
+ DPRINTK ("ENTER\n");
+
+ assert (file != NULL);
+ assert (wait != NULL);
+ card = file->private_data;
+ assert (card != NULL);
+
+ if ((file->f_mode & FMODE_WRITE) &&
+ (atomic_read (&card->ch_out.state) != sgd_stopped)) {
+ poll_wait(file, &card->ch_out.wait, wait);
+
+ /* XXX is this correct */
+ if (atomic_read (&card->ch_out.buf_in_use) <
+ atomic_read (&card->ch_out.next_buf))
+ mask |= POLLOUT | POLLWRNORM;
+ }
+
+ DPRINTK("EXIT, returning %u\n", mask);
+ return mask;
+}
+
+
+static int via_dsp_drain_dac (struct via_info *card, int non_block)
+{
+ DPRINTK ("ENTER, non_block = %d\n", non_block);
+
+ while (!via_chan_empty (&card->ch_out)) {
+ if (non_block) {
+ DPRINTK ("EXIT, returning -EBUSY\n");
+ return -EBUSY;
+ }
+ if (signal_pending (current)) {
+ DPRINTK ("EXIT, returning -ERESTARTSYS\n");
+ return -ERESTARTSYS;
+ }
+
+#ifndef NDEBUG
+ {
+ u8 r40,r41,r42,r43,r44,r48;
+ pci_read_config_byte (card->pdev, 0x40, &r40);
+ pci_read_config_byte (card->pdev, 0x41, &r41);
+ pci_read_config_byte (card->pdev, 0x42, &r42);
+ pci_read_config_byte (card->pdev, 0x43, &r43);
+ pci_read_config_byte (card->pdev, 0x44, &r44);
+ pci_read_config_byte (card->pdev, 0x48, &r48);
+ DPRINTK("PCI config: %02X %02X %02X %02X %02X %02X\n",
+ r40,r41,r42,r43,r44,r48);
+
+ spin_lock_irq (&card->lock);
+ DPRINTK ("regs==%02X %02X %02X %08X %08X %08X %08X\n",
+ inb (card->baseaddr + 0x00),
+ inb (card->baseaddr + 0x01),
+ inb (card->baseaddr + 0x02),
+ inl (card->baseaddr + 0x04),
+ inl (card->baseaddr + 0x0C),
+ inl (card->baseaddr + 0x80),
+ inl (card->baseaddr + 0x84));
+ spin_unlock_irq (&card->lock);
+
+ }
+#endif
+
+ DPRINTK ("sleeping\n");
+ interruptible_sleep_on (&card->ch_out.wait);
+ }
+
+ DPRINTK ("EXIT\n");
+ return 0;
+}
+
+
+static int via_dsp_ioctl_space (struct via_info *card,
+ struct via_channel *chan,
+ void *arg)
+{
+ audio_buf_info info;
+ int n;
+
+ info.fragstotal = VIA_DMA_BUFFERS;
+ info.fragsize = VIA_DMA_BUF_SIZE;
+
+ /* number of full fragments we can read without blocking */
+ n = atomic_read (&chan->next_buf) - atomic_read (&chan->buf_in_use);
+ info.fragments = VIA_DMA_BUFFERS - n;
+
+ /* number of bytes that can be read or written immediately
+ * without blocking. FIXME: we are lazy and ignore partially-full
+ * buffers.
+ */
+ info.bytes = info.fragments * VIA_DMA_BUF_SIZE;
+
+ DPRINTK ("EXIT, returning fragstotal=%d, fragsize=%d, fragments=%d, bytes=%d\n",
+ info.fragstotal,
+ info.fragsize,
+ info.fragments,
+ info.bytes);
+
+ return copy_to_user (arg, &info, sizeof (info));
+}
+
+
+
+static int via_dsp_ioctl (struct inode *inode, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ int rc = -EINVAL, rd=0, wr=0, val=0;
+ struct via_info *card;
+
+ DPRINTK ("ENTER, cmd = 0x%08X\n", cmd);
+
+ assert (file != NULL);
+ card = file->private_data;
+ assert (card != NULL);
+
+ if (file->f_mode & FMODE_WRITE)
+ wr = 1;
+ if (file->f_mode & FMODE_READ)
+ rd = 1;
+
+ switch (cmd) {
+
+ /* OSS API version. XXX unverified */
+ case OSS_GETVERSION:
+ DPRINTK("EXIT, returning SOUND_VERSION\n");
+ return put_user (SOUND_VERSION, (int *)arg);
+
+ /* list of supported PCM data formats */
+ case SNDCTL_DSP_GETFMTS:
+ DPRINTK("EXIT, returning AFMT U8|S16_LE\n");
+ return put_user (AFMT_U8 | AFMT_S16_LE, (int *)arg);
+
+ /* query or set current channel's PCM data format */
+ case SNDCTL_DSP_SETFMT:
+ get_user_ret(val, (int *)arg, -EFAULT);
+ if (val != AFMT_QUERY) {
+ rc = 0;
+
+ spin_lock_irq (&card->lock);
+ if (rc == 0 && rd)
+ rc = via_chan_set_fmt (card, &card->ch_in, val);
+ if (rc == 0 && wr)
+ rc = via_chan_set_fmt (card, &card->ch_out, val);
+ spin_unlock_irq (&card->lock);
+
+ if (rc <= 0)
+ return rc ? rc : -EINVAL;
+ val = rc;
+ } else {
+ spin_lock_irq (&card->lock);
+ if ((rd && (card->ch_in.pcm_fmt & VIA_PCM_FMT_16BIT)) ||
+ (wr && (card->ch_out.pcm_fmt & VIA_PCM_FMT_16BIT)))
+ val = AFMT_S16_LE;
+ else
+ val = AFMT_U8;
+ spin_unlock_irq (&card->lock);
+ }
+ DPRINTK("SETFMT EXIT, returning %d\n", val);
+ return put_user (val, (int *)arg);
+
+ /* query or set number of channels (1=mono, 2=stereo) */
+ case SNDCTL_DSP_CHANNELS:
+ get_user_ret(val, (int *)arg, -EFAULT);
+ if (val != 0) {
+ rc = 0;
+ spin_lock_irq (&card->lock);
+ if (rc == 0 && rd)
+ rc = via_chan_set_stereo (card, &card->ch_in, val);
+ if (rc == 0 && wr)
+ rc = via_chan_set_stereo (card, &card->ch_out, val);
+ spin_unlock_irq (&card->lock);
+ if (rc <= 0)
+ return rc ? rc : -EINVAL;
+ val = rc;
+ } else {
+ spin_lock_irq (&card->lock);
+ if ((rd && (card->ch_in.pcm_fmt & VIA_PCM_FMT_STEREO)) ||
+ (wr && (card->ch_out.pcm_fmt & VIA_PCM_FMT_STEREO)))
+ val = 2;
+ else
+ val = 1;
+ spin_unlock_irq (&card->lock);
+ }
+ DPRINTK("CHANNELS EXIT, returning %d\n", val);
+ return put_user (val, (int *)arg);
+
+ /* enable (val is not zero) or disable (val == 0) stereo */
+ case SNDCTL_DSP_STEREO:
+ get_user_ret(val, (int *)arg, -EFAULT);
+ rc = 0;
+ spin_lock_irq (&card->lock);
+ if (rc == 0 && rd)
+ rc = via_chan_set_stereo (card, &card->ch_in, val ? 2 : 1);
+ if (rc == 0 && wr)
+ rc = via_chan_set_stereo (card, &card->ch_out, val ? 2 : 1);
+ spin_unlock_irq (&card->lock);
+ if (rc <= 0)
+ return rc ? rc : -EINVAL;
+ DPRINTK("STEREO EXIT, returning %d\n", val);
+ return 0;
+
+ /* query or set sampling rate */
+ case SNDCTL_DSP_SPEED:
+ get_user_ret(val, (int *)arg, -EFAULT);
+ if (val < 0)
+ return -EINVAL;
+ if (val > 0) {
+ rc = 0;
+ spin_lock_irqsave (&card->lock, flags);
+ if (rc == 0 && rd)
+ rc = via_chan_set_speed (card, &card->ch_in, val);
+ if (rc == 0 && wr)
+ rc = via_chan_set_speed (card, &card->ch_out, val);
+ spin_unlock_irqrestore (&card->lock, flags);
+ if (rc <= 0)
+ return rc ? rc : -EINVAL;
+ val = rc;
+ } else {
+ spin_lock_irqsave (&card->lock, flags);
+ if (rd)
+ val = card->ch_in.rate;
+ else if (wr)
+ val = card->ch_out.rate;
+ else
+ val = 0;
+ spin_unlock_irqrestore (&card->lock, flags);
+ }
+ DPRINTK("SPEED EXIT, returning %d\n", val);
+ return put_user (val, (int *)arg);
+
+ /* wait until all buffers have been played, and then stop device */
+ case SNDCTL_DSP_SYNC:
+ if (wr) {
+ DPRINTK("SYNC EXIT (after calling via_dsp_drain_dac)\n");
+ return via_dsp_drain_dac (card, file->f_flags & O_NONBLOCK);
+ }
+ break;
+
+ /* stop recording/playback immediately */
+ case SNDCTL_DSP_RESET:
+ if (rd) {
+ spin_lock_irqsave (&card->lock, flags);
+ via_chan_clear (&card->ch_in);
+ via_chan_pcm_fmt (card, &card->ch_in, 1);
+ spin_unlock_irqrestore (&card->lock, flags);
+ }
+ if (wr) {
+ spin_lock_irqsave (&card->lock, flags);
+ via_chan_clear (&card->ch_out);
+ via_chan_pcm_fmt (card, &card->ch_out, 1);
+ spin_unlock_irqrestore (&card->lock, flags);
+ }
+ DPRINTK("RESET EXIT, returning 0\n");
+ return 0;
+
+ /* obtain bitmask of device capabilities, such as mmap, full duplex, etc. */
+ case SNDCTL_DSP_GETCAPS:
+ DPRINTK("GETCAPS EXIT\n");
+ return put_user(DSP_CAP_REVISION, (int *)arg);
+
+ /* obtain bitmask of device capabilities, such as mmap, full duplex, etc. */
+ case SNDCTL_DSP_GETBLKSIZE:
+ DPRINTK("GETBLKSIZE EXIT\n");
+ return put_user(VIA_DMA_BUF_SIZE, (int *)arg);
+
+ /* obtain information about input buffering */
+ case SNDCTL_DSP_GETISPACE:
+ DPRINTK("GETISPACE EXIT\n");
+ return via_dsp_ioctl_space (card, &card->ch_in, (void*) arg);
+
+ /* obtain information about output buffering */
+ case SNDCTL_DSP_GETOSPACE:
+ DPRINTK("GETOSPACE EXIT\n");
+ return via_dsp_ioctl_space (card, &card->ch_out, (void*) arg);
+
+ /* return number of bytes remaining to be played by DMA engine */
+ case SNDCTL_DSP_GETODELAY:
+ {
+ int n;
+
+ n = atomic_read (&card->ch_out.next_buf) -
+ atomic_read (&card->ch_out.buf_in_use);
+ assert (n >= 0);
+
+ if (n == 0)
+ val = 0;
+ else {
+ val = (n - 1) * VIA_DMA_BUF_SIZE;
+ val += inl (card->ch_out.iobase + VIA_BASE0_PCM_OUT_BLOCK_COUNT);
+ }
+
+ DPRINTK("GETODELAY EXIT, val = %d bytes\n", val);
+ return put_user (val, (int *)arg);
+ }
+
+ /* set fragment size. implemented as a successful no-op for now */
+ case SNDCTL_DSP_SETFRAGMENT:
+ get_user_ret(val, (int *)arg, -EFAULT);
+
+ DPRINTK ("SNDCTL_DSP_SETFRAGMENT (fragshift==0x%04X (%d), maxfrags==0x%04X (%d))\n",
+ val & 0xFFFF,
+ val & 0xFFFF,
+ (val >> 16) & 0xFFFF,
+ (val >> 16) & 0xFFFF);
+
+ /* just to shut up some programs */
+ return 0;
+
+ /* inform device of an upcoming pause in input (or output). not implemented */
+ case SNDCTL_DSP_POST:
+ DPRINTK("POST EXIT (null ioctl, returning -EINVAL)\n");
+ return -EINVAL;
+
+ /* not implemented */
+ default:
+ DPRINTK ("unhandled ioctl\n");
+ break;
}
+
+ DPRINTK("EXIT, returning %d\n", rc);
+ return rc;
+}
+
+
+static int via_dsp_open (struct inode *inode, struct file *file)
+{
+ int open_mode, rc = -EINVAL, minor = MINOR(inode->i_rdev);
+ int got_read_chan = 0, is_busy;
+ struct via_info *card;
+ struct pci_dev *pdev;
+ struct pci_driver *drvr;
+ unsigned long flags;
+
+ DPRINTK ("ENTER, minor=%d, file->f_mode=0x%x\n", minor, file->f_mode);
- /* turn on legacy features */
- pci_read_config_byte (pcidev, VIA_FUNC_ENABLE, &tmp8);
- tmp8 |= VIA_CR42_SB_ENABLE | VIA_CR42_MIDI_ENABLE |
- VIA_CR42_FM_ENABLE;
- pci_write_config_byte (pcidev, VIA_FUNC_ENABLE, tmp8);
-
- /* read legacy PNP info byte */
- pci_read_config_byte (pcidev, VIA_PNP_CONTROL, &tmp8);
- pci_write_config_byte (pcidev, VIA_PNP_CONTROL, tmp8);
-
- sb_irq = via_pnp_data[((tmp8 >> 6) & 0x03)].sb_irq;
- sb_dma = via_pnp_data[((tmp8 >> 4) & 0x03)].sb_dma;
- midi_base = via_pnp_data[((tmp8 >> 2) & 0x03)].midi_base;
- sb_io_base = via_pnp_data[(tmp8 & 0x03)].sb_io_base;
+ MOD_INC_USE_COUNT;
+
+ if (file->f_mode & FMODE_READ) /* no input ATM */
+ goto err_out;
- udelay(100);
+ card = NULL;
+ pci_for_each_dev(pdev) {
+ drvr = pci_dev_driver (pdev);
+ if (drvr == &via_driver) {
+ assert (pdev->driver_data != NULL);
+
+ card = pdev->driver_data;
+ DPRINTK ("dev_dsp = %d, minor = %d, assn = %d\n",
+ card->dev_dsp, minor,
+ (card->dev_dsp ^ minor) & ~0xf);
+
+ if (((card->dev_dsp ^ minor) & ~0xf) == 0)
+ goto match;
+ }
+ }
- printk(KERN_INFO PFX "legacy "
- "MIDI: 0x%X, SB: 0x%X / %d IRQ / %d DMA\n",
- midi_base, sb_io_base, sb_irq, sb_dma);
-
- card->sb_data.name = VIA_CARD_NAME;
- card->sb_data.card_subtype = MDL_SBPRO;
- card->sb_data.io_base = sb_io_base;
- card->sb_data.irq = sb_irq;
- card->sb_data.dma = sb_dma;
-
- /* register legacy SoundBlaster Pro */
- if (!via_probe_sb (&card->sb_data)) {
- printk (KERN_ERR PFX
- "SB probe @ 0x%X failed, aborting\n",
- sb_io_base);
- DPRINTK ("EXIT, returning -1\n");
- return -1;
- }
- via_attach_sb (&card->sb_data);
-
- card->opl3_data.name = card->sb_data.name;
- card->opl3_data.io_base = midi_base;
- card->opl3_data.irq = -1;
-
- /* register legacy MIDI */
- if (!probe_uart401 (&card->opl3_data)) {
- printk (KERN_WARNING PFX
- "MIDI probe @ 0x%X failed, continuing\n",
- midi_base);
- card->opl3_data.io_base = 0;
- } else {
- attach_uart401 (&card->opl3_data);
+ DPRINTK ("no matching %s found\n", card ? "minor" : "driver");
+ rc = -ENODEV;
+ goto err_out;
+
+match:
+ file->private_data = card;
+
+ /* wait for device to become free */
+ spin_lock_irqsave (&card->lock, flags);
+ open_mode = card->open_mode;
+ if (open_mode & file->f_mode)
+ is_busy = 1;
+ else {
+ is_busy = 0;
+ card->open_mode |= file->f_mode;
+ open_mode = card->open_mode;
+ }
+ spin_unlock_irqrestore (&card->lock, flags);
+ if (is_busy) {
+ rc = -EBUSY;
+ goto err_out;
+ }
+
+ DPRINTK("open_mode now 0x%x\n", open_mode);
+
+ /* handle input from analog source */
+ if (file->f_mode & FMODE_READ) {
+ rc = via_chan_init (card, &card->ch_in, 0x10);
+ if (rc)
+ goto err_out_clear_mode;
+
+ got_read_chan = 1;
+
+ /* why is this forced to 16-bit stereo in all drivers? */
+ card->ch_in.pcm_fmt =
+ VIA_PCM_FMT_16BIT | VIA_PCM_FMT_STEREO;
+
+ spin_lock_irqsave (&card->lock, flags);
+ via_chan_pcm_fmt (card, &card->ch_out, 0);
+ spin_unlock_irqrestore (&card->lock, flags);
+
+ via_set_adc_rate (card, 8000);
+ }
+
+ /* handle output to analog source */
+ if (file->f_mode & FMODE_WRITE) {
+ rc = via_chan_init (card, &card->ch_out, 0x00);
+ if (rc)
+ goto err_out_clear_mode;
+
+ if ((minor & 0xf) == SND_DEV_DSP16)
+ card->ch_out.pcm_fmt |= VIA_PCM_FMT_16BIT;
+
+ spin_lock_irqsave (&card->lock, flags);
+ via_chan_pcm_fmt (card, &card->ch_out, 0);
+ spin_unlock_irqrestore (&card->lock, flags);
+
+ via_set_dac_rate (card, 8000);
}
- num_cards++;
DPRINTK ("EXIT, returning 0\n");
return 0;
+
+err_out_clear_mode:
+ if (got_read_chan)
+ via_chan_free (card, &card->ch_in);
+ spin_lock_irqsave (&card->lock, flags);
+ card->open_mode &= ~file->f_mode;
+ spin_unlock_irqrestore (&card->lock, flags);
+err_out:
+ MOD_DEC_USE_COUNT;
+ DPRINTK("ERROR EXIT, returning %d\n", rc);
+ return rc;
}
-/*
- * This loop walks the PCI configuration database and finds where
- * the sound cards are.
+static int via_dsp_release(struct inode *inode, struct file *file)
+{
+ struct via_info *card;
+ unsigned long flags;
+
+ DPRINTK ("ENTER\n");
+
+ assert (file != NULL);
+ card = file->private_data;
+ assert (card != NULL);
+
+ if (file->f_mode & FMODE_READ)
+ via_chan_free (card, &card->ch_in);
+
+ if (file->f_mode & FMODE_WRITE) {
+ via_dsp_drain_dac (card, file->f_flags & O_NONBLOCK);
+ via_chan_free (card, &card->ch_out);
+ }
+
+ spin_lock_irqsave (&card->lock, flags);
+ card->open_mode &= ~(file->f_mode);
+ spin_unlock_irqrestore (&card->lock, flags);
+
+ wake_up (&card->open_wait);
+ MOD_DEC_USE_COUNT;
+
+ DPRINTK("EXIT, returning 0\n");
+ return 0;
+}
+
+
+#ifdef VIA_PROC_FS
+
+/****************************************************************
+ *
+ * /proc/driver/via/info
*
- * Note - only a single PCI scan occurs, eliminating possibility
- * of multiple audio chips
*
*/
-
-static int __init probe_via82cxxx (void)
+
+static int via_info_read_proc (char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+#define YN(val,bit) (((val) & (bit)) ? "yes" : "no")
+#define ED(val,bit) (((val) & (bit)) ? "enable" : "disable")
+
+ int len = 0;
+ u8 r40, r41, r42, r44;
+ struct via_info *card = data;
+ u16 tmp16;
+
+ DPRINTK ("ENTER\n");
+
+ assert (card != NULL);
+
+ len += sprintf (page+len, VIA_CARD_NAME "\n\n");
+
+ pci_read_config_byte (card->pdev, 0x40, &r40);
+ pci_read_config_byte (card->pdev, 0x41, &r41);
+ pci_read_config_byte (card->pdev, 0x42, &r42);
+ pci_read_config_byte (card->pdev, 0x44, &r44);
+
+ len += sprintf (page+len,
+ "Via 82Cxxx PCI registers:\n"
+ "\n"
+ "40 Codec Ready: %s\n"
+ " Codec Low-power: %s\n"
+ " Secondary Codec Ready: %s\n"
+ "\n"
+ "41 Interface Enable: %s\n"
+ " De-Assert Reset: %s\n"
+ " Force SYNC high: %s\n"
+ " Force SDO high: %s\n"
+ " Variable Sample Rate On-Demand Mode: %s\n"
+ " SGD Read Channel PCM Data Out: %s\n"
+ " FM Channel PCM Data Out: %s\n"
+ " SB PCM Data Out: %s\n"
+ "\n"
+ "42 Game port enabled: %s\n"
+ " SoundBlaster enabled: %s\n"
+ " FM enabled: %s\n"
+ " MIDI enabled: %s\n"
+ "\n"
+ "44 AC-Link Interface Access: %s\n"
+ " Secondary Codec Support: %s\n"
+
+ "\n",
+
+ YN (r40, VIA_CR40_AC97_READY),
+ YN (r40, VIA_CR40_AC97_LOW_POWER),
+ YN (r40, VIA_CR40_SECONDARY_READY),
+
+ ED (r41, VIA_CR41_AC97_ENABLE),
+ YN (r41, (1 << 6)),
+ YN (r41, (1 << 5)),
+ YN (r41, (1 << 4)),
+ ED (r41, (1 << 3)),
+ ED (r41, (1 << 2)),
+ ED (r41, (1 << 1)),
+ ED (r41, (1 << 0)),
+
+ YN (r42, VIA_CR42_GAME_ENABLE),
+ YN (r42, VIA_CR42_SB_ENABLE),
+ YN (r42, VIA_CR42_FM_ENABLE),
+ YN (r42, VIA_CR42_MIDI_ENABLE),
+
+ YN (r44, VIA_CR44_AC_LINK_ACCESS),
+ YN (r44, VIA_CR44_SECOND_CODEC_SUPPORT)
+
+ );
+
+ DPRINTK("EXIT, returning %d\n", len);
+ return len;
+
+#undef YN
+#undef ED
+}
+
+
+/****************************************************************
+ *
+ * /proc/driver/via/... setup and cleanup
+ *
+ *
+ */
+
+static int __init via_init_proc (void)
+{
+ DPRINTK ("ENTER\n");
+
+ if (!proc_mkdir ("driver/via", 0))
+ return -EIO;
+
+ DPRINTK ("EXIT, returning 0\n");
+ return 0;
+}
+
+
+static void via_cleanup_proc (void)
{
- struct pci_dev *pcidev = NULL;
+ DPRINTK ("ENTER\n");
+
+ remove_proc_entry ("driver/via", NULL);
+
+ DPRINTK ("EXIT\n");
+}
+
+static int __init via_card_init_proc (struct via_info *card)
+{
+ char s[32];
+ int rc;
+
DPRINTK ("ENTER\n");
- pcidev = pci_find_device (PCI_VENDOR_ID_VIA,
- PCI_DEVICE_ID_VIA_82C686_5, NULL);
+ sprintf (s, "driver/via/%d", card->card_num);
+ if (!proc_mkdir (s, 0)) {
+ rc = -EIO;
+ goto err_out_none;
+ }
+
+ sprintf (s, "driver/via/%d/info", card->card_num);
+ if (!create_proc_read_entry (s, 0, 0, via_info_read_proc, card)) {
+ rc = -EIO;
+ goto err_out_dir;
+ }
- if (!pcidev || via82cxxx_install (pcidev) != 0) {
- printk (KERN_ERR PFX "audio init failed\n");
- DPRINTK ("EXIT, returning -1\n");
- return -1;
+ sprintf (s, "driver/via/%d/ac97", card->card_num);
+ if (!create_proc_read_entry (s, 0, 0, ac97_read_proc, &card->ac97)) {
+ rc = -EIO;
+ goto err_out_info;
}
DPRINTK ("EXIT, returning 0\n");
return 0;
+
+err_out_info:
+ sprintf (s, "driver/via/%d/info", card->card_num);
+ remove_proc_entry (s, NULL);
+
+err_out_dir:
+ sprintf (s, "driver/via/%d", card->card_num);
+ remove_proc_entry (s, NULL);
+
+err_out_none:
+ DPRINTK ("EXIT, returning %d\n", rc);
+ return rc;
}
-/*
- * This function is called when the user or kernel loads the
- * module into memory.
- */
+static void via_card_cleanup_proc (struct via_info *card)
+{
+ char s[32];
+
+ DPRINTK ("ENTER\n");
+
+ sprintf (s, "driver/via/%d/ac97", card->card_num);
+ remove_proc_entry (s, NULL);
+
+ sprintf (s, "driver/via/%d/info", card->card_num);
+ remove_proc_entry (s, NULL);
+
+ sprintf (s, "driver/via/%d", card->card_num);
+ remove_proc_entry (s, NULL);
+
+ DPRINTK ("EXIT\n");
+}
+
+
+#else
+
+static inline int via_init_proc (void) { return 0; }
+static inline void via_cleanup_proc (void) {}
+static inline int via_card_init_proc (struct via_info *card) { return 0; }
+static inline void via_card_cleanup_proc (struct via_info *card) {}
+
+#endif /* VIA_PROC_FS */
-static int __init init_via82cxxx_module(void)
+/****************************************************************
+ *
+ * Chip setup and kernel registration
+ *
+ *
+ */
+
+static int __init via_init_one (struct pci_dev *pdev, const struct pci_device_id *id)
{
+ int rc;
+ struct via_info *card;
u8 tmp;
- int i;
- const char *rev = "unknown!";
-
- memset (cards, 0, sizeof (cards));
+ static int printed_version = 0;
DPRINTK ("ENTER\n");
+
+ if (printed_version++ == 0)
+ printk (KERN_INFO "Via 686a audio driver " VIA_VERSION "\n");
- if (!pci_present ()) {
- printk (KERN_DEBUG PFX "PCI not present, exiting\n");
- DPRINTK ("EXIT, returning -ENODEV\n");
- return -ENODEV;
+ if (!request_region (pci_resource_start (pdev, 0),
+ pci_resource_len (pdev, 0),
+ VIA_MODULE_NAME)) {
+ printk (KERN_ERR PFX "unable to obtain I/O resources, aborting\n");
+ rc = -EBUSY;
+ goto err_out;
}
- if (probe_via82cxxx() != 0) {
- printk(KERN_ERR PFX "probe failed, aborting\n");
- /* XXX unload cards registered so far, if any */
- DPRINTK ("EXIT, returning -ENODEV\n");
- return -ENODEV;
+#if 0
+ /* chipset init copied from via */
+ pci_write_config_byte(pdev, 0x41,(0xc0));
+ udelay(10);
+ pci_read_config_byte(pdev, 0x41, &tmp);
+ udelay(10);
+ pci_write_config_byte(pdev, 0x41,(tmp | 0x0f));
+ udelay(10);
+ pci_read_config_byte(pdev, 0x42, &tmp);
+ udelay(10);
+ pci_write_config_byte(pdev, 0x42,(tmp | 0x3f));
+#endif
+
+ if (pci_enable_device (pdev)) {
+ rc = -EIO;
+ goto err_out_none;
+ }
+
+#if 0
+ /* chipset init copied from ALSA */
+ pci_write_config_byte(pdev, 0x42, 0);
+ pci_write_config_byte(pdev, 0x41, 0x40);
+ udelay(100);
+ pci_write_config_byte(pdev, 0x41, 0x60);
+ udelay(10);
+ pci_write_config_byte(pdev, 0x41, 0xCC);
+ udelay(10);
+
+ {
+ u32 data = ((AC97_POWER_CONTROL & 0x7F) << 16) | 0x0000;
+ udelay(100);
+ outl (data, pci_resource_start (pdev, 0) + VIA_BASE0_AC97_CTRL);
+ }
+#endif
+
+ card = kmalloc (sizeof (*card), GFP_KERNEL);
+ if (!card) {
+ printk (KERN_ERR PFX "out of memory, aborting\n");
+ rc = -ENOMEM;
+ goto err_out_none;
+ }
+
+ pdev->driver_data = card;
+
+ memset (card, 0, sizeof (*card));
+ card->pdev = pdev;
+ card->baseaddr = pci_resource_start (pdev, 0);
+ card->card_num = via_num_cards++;
+ spin_lock_init (&card->lock);
+ init_waitqueue_head(&card->open_wait);
+
+ /* if BAR 2 is present, chip is Rev H or later,
+ * which means it has a few extra features */
+ if (pci_resource_start (pdev, 2) > 0)
+ card->rev_h = 1;
+
+ if (pdev->irq < 1) {
+ printk (KERN_ERR PFX "invalid PCI IRQ %d, aborting\n", pdev->irq);
+ rc = -ENODEV;
+ goto err_out_kfree;
+ }
+
+ if (!(pci_resource_flags (pdev, 0) & IORESOURCE_IO)) {
+ printk (KERN_ERR PFX "unable to locate I/O resources, aborting\n");
+ rc = -ENODEV;
+ goto err_out_kfree;
+ }
+
+ /*
+ * init AC97 mixer and codec
+ */
+ rc = via_ac97_init (card);
+ if (rc) {
+ printk (KERN_ERR PFX "AC97 init failed, aborting\n");
+ goto err_out_kfree;
}
- pci_read_config_byte (cards[0].pdev, PCI_REVISION_ID, &tmp);
- for (i = 0; i < arraysize(via_chip_revs); i++)
- if (via_chip_revs[i].revision == tmp) {
- rev = via_chip_revs[i].rev_name;
- break;
- }
- printk (KERN_INFO PFX VIA_CARD_NAME " loaded\n");
- printk (KERN_INFO PFX "Chip rev %s. Features: SBPro compat%s%s\n",
- rev,
- cards[0].opl3_data.io_base == 0 ? "" : ", MPU-401 MIDI",
- cards[0].have_ac97 == -1 ? "" : ", AC97 mixer");
-
- if (via_init_proc () != 0) {
- printk (KERN_WARNING PFX
- "Unable to init experimental /proc, ignoring\n");
+ /*
+ * init DSP device
+ */
+ rc = via_dsp_init (card);
+ if (rc) {
+ printk (KERN_ERR PFX "DSP device init failed, aborting\n");
+ goto err_out_have_mixer;
+ }
+
+ /*
+ * per-card /proc info
+ */
+ rc = via_card_init_proc (card);
+ if (rc) {
+ printk (KERN_ERR PFX "card-specific /proc init failed, aborting\n");
+ goto err_out_have_dsp;
}
/*
- * Binds us to the sound subsystem
+ * init and turn on interrupts, as the last thing we do
*/
- SOUND_LOCK;
+ rc = via_interrupt_init (card);
+ if (rc) {
+ printk (KERN_ERR PFX "interrupt init failed, aborting\n");
+ goto err_out_have_proc;
+ }
+
+ pci_read_config_byte (pdev, 0x3C, &tmp);
+ if ((tmp & 0x0F) != pdev->irq) {
+ printk (KERN_WARNING PFX "IRQ fixup, 0x3C==0x%02X\n", tmp);
+ tmp &= 0xF0;
+ tmp |= pdev->irq;
+ pci_write_config_byte (pdev, 0x3C, tmp);
+ DPRINTK("new 0x3c==0x%02x\n", tmp);
+ } else {
+ DPRINTK("IRQ reg 0x3c==0x%02x, irq==%d\n",
+ tmp, tmp & 0x0F);
+ }
+
+ printk (KERN_INFO PFX "board #%d at 0x%04lX, IRQ %d\n",
+ card->card_num + 1, card->baseaddr, pdev->irq);
+
DPRINTK ("EXIT, returning 0\n");
return 0;
+
+err_out_have_proc:
+ via_card_cleanup_proc (card);
+
+err_out_have_dsp:
+ via_dsp_cleanup (card);
+
+err_out_have_mixer:
+ via_ac97_cleanup (card);
+
+err_out_kfree:
+#ifndef VIA_NDEBUG
+ memset (card, 0xAB, sizeof (*card)); /* poison memory */
+#endif
+ kfree (card);
+
+err_out_none:
+ release_region (pci_resource_start (pdev, 0), pci_resource_len (pdev, 0));
+err_out:
+ pdev->driver_data = NULL;
+ DPRINTK ("EXIT - returning %d\n", rc);
+ return rc;
}
-/*
- * This is called when it is removed. It will only be removed
- * when its use count is 0. For sound the SOUND_LOCK/SOUND_UNLOCK
- * macros hide the entire work for this.
- */
-
-static void __exit cleanup_via82cxxx_module(void)
+
+static void __exit via_remove_one (struct pci_dev *pdev)
{
- DPRINTK("ENTER\n");
+ struct via_info *card;
+
+ DPRINTK ("ENTER\n");
+
+ assert (pdev != NULL);
+ card = pdev->driver_data;
+ assert (card != NULL);
- if (cards[0].opl3_data.io_base)
- unload_uart401 (&cards[0].opl3_data);
+ via_interrupt_cleanup (card);
+ via_card_cleanup_proc (card);
+ via_dsp_cleanup (card);
- via_unload_sb (&cards[0].sb_data);
+ release_region (pci_resource_start (pdev, 0), pci_resource_len (pdev, 0));
+
+#ifndef VIA_NDEBUG
+ memset (card, 0xAB, sizeof (*card)); /* poison memory */
+#endif
+ kfree (card);
+
+ pdev->driver_data = NULL;
- via_unload_ac97 (&cards[0]);
+ pci_set_power_state (pdev, 3); /* ...zzzzzz */
- via_cleanup_proc ();
+ DPRINTK ("EXIT\n");
+ return;
+}
+
+
+/****************************************************************
+ *
+ * Driver initialization and cleanup
+ *
+ *
+ */
+
+static int __init init_via82cxxx_audio(void)
+{
+ int rc;
+
+ DPRINTK ("ENTER\n");
- /*
- * Final clean up with the sound layer
- */
- SOUND_LOCK_END;
+ MOD_INC_USE_COUNT;
+
+ rc = via_init_proc ();
+ if (rc) {
+ MOD_DEC_USE_COUNT;
+ DPRINTK ("EXIT, returning %d\n", rc);
+ return rc;
+ }
+
+ rc = pci_register_driver (&via_driver);
+ if (rc < 1) {
+ if (rc == 0)
+ pci_unregister_driver (&via_driver);
+ via_cleanup_proc ();
+ MOD_DEC_USE_COUNT;
+ DPRINTK ("EXIT, returning -ENODEV\n");
+ return -ENODEV;
+ }
+
+ MOD_DEC_USE_COUNT;
+
+ DPRINTK ("EXIT, returning 0\n");
+ return 0;
+}
+
+
+static void __exit cleanup_via82cxxx_audio(void)
+{
+ DPRINTK("ENTER\n");
+
+ pci_unregister_driver (&via_driver);
+ via_cleanup_proc ();
DPRINTK("EXIT\n");
}
-module_init(init_via82cxxx_module);
-module_exit(cleanup_via82cxxx_module);
+module_init(init_via82cxxx_audio);
+module_exit(cleanup_via82cxxx_audio);
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)