#ifndef _NM256_H_ #define _NM256_H_ #include #include #include "ac97.h" /* The revisions that we currently handle. */ enum nm256rev { REV_NM256AV, REV_NM256ZX }; /* Per-card structure. */ struct nm256_info { /* Magic number used to verify that this struct is valid. */ #define NM_MAGIC_SIG 0x55aa00ff int magsig; /* Revision number */ enum nm256rev rev; struct ac97_hwint mdev; /* Our audio device numbers. */ int dev[2]; /* The # of times each device has been opened. (Should only be 0 or 1). */ int opencnt[2]; /* We use two devices, because we can do simultaneous play and record. This keeps track of which device is being used for what purpose; these are the actual device numbers. */ int dev_for_play; int dev_for_record; spinlock_t lock; /* The mixer device. */ int mixer_oss_dev; /* * Can only be opened once for each operation. These aren't set * until an actual I/O operation is performed; this allows one * device to be open for read/write without inhibiting I/O to * the other device. */ int is_open_play; int is_open_record; /* Non-zero if we're currently playing a sample. */ int playing; /* Ditto for recording a sample. */ int recording; /* The two memory ports. */ struct nm256_ports { /* Physical address of the port. */ u32 physaddr; /* Our mapped-in pointer. */ char __iomem *ptr; /* PTR's offset within the physical port. */ u32 start_offset; /* And the offset of the end of the buffer. */ u32 end_offset; } port[2]; /* The following are offsets within memory port 1. */ u32 coeffBuf; u32 allCoeffBuf; /* Record and playback buffers. */ u32 abuf1, abuf2; /* Offset of the AC97 mixer in memory port 2. */ u32 mixer; /* Offset of the mixer status register in memory port 2. */ u32 mixer_status_offset; /* Non-zero if we have written initial values to the mixer. */ u8 mixer_values_init; /* * Status mask bit; (*mixer_status_loc & mixer_status_mask) == 0 means * it's ready. */ u16 mixer_status_mask; /* The sizes of the playback and record ring buffers. */ u32 playbackBufferSize; u32 recordBufferSize; /* Are the coefficient values in the memory cache current? */ u8 coeffsCurrent; /* For writes, the amount we last wrote. */ u32 requested_amt; /* The start of the block currently playing. */ u32 curPlayPos; /* The amount of data we were requested to record. */ u32 requestedRecAmt; /* The offset of the currently-recording block. */ u32 curRecPos; /* The destination buffer. */ char *recBuf; /* Our IRQ number. */ int irq; /* A flag indicating how many times we've grabbed the IRQ. */ int has_irq; /* The card interrupt service routine. */ irqreturn_t (*introutine) (int, void *, struct pt_regs *); /* Current audio config, cached. */ struct sinfo { u32 samplerate; u8 bits; u8 stereo; } sinfo[2]; /* goes with each device */ /* The cards are stored in a chain; this is the next card. */ struct nm256_info *next_card; }; /* The BIOS signature. */ #define NM_SIGNATURE 0x4e4d0000 /* Signature mask. */ #define NM_SIG_MASK 0xffff0000 /* Size of the second memory area. */ #define NM_PORT2_SIZE 4096 /* The base offset of the mixer in the second memory area. */ #define NM_MIXER_OFFSET 0x600 /* The maximum size of a coefficient entry. */ #define NM_MAX_COEFFICIENT 0x5000 /* The interrupt register. */ #define NM_INT_REG 0xa04 /* And its bits. */ #define NM_PLAYBACK_INT 0x40 #define NM_RECORD_INT 0x100 #define NM_MISC_INT_1 0x4000 #define NM_MISC_INT_2 0x1 #define NM_ACK_INT(CARD, X) nm256_writePort16((CARD), 2, NM_INT_REG, (X) << 1) /* The AV's "mixer ready" status bit and location. */ #define NM_MIXER_STATUS_OFFSET 0xa04 #define NM_MIXER_READY_MASK 0x0800 #define NM_MIXER_PRESENCE 0xa06 #define NM_PRESENCE_MASK 0x0050 #define NM_PRESENCE_VALUE 0x0040 /* * For the ZX. It uses the same interrupt register, but it holds 32 * bits instead of 16. */ #define NM2_PLAYBACK_INT 0x10000 #define NM2_RECORD_INT 0x80000 #define NM2_MISC_INT_1 0x8 #define NM2_MISC_INT_2 0x2 #define NM2_ACK_INT(CARD, X) nm256_writePort32((CARD), 2, NM_INT_REG, (X)) /* The ZX's "mixer ready" status bit and location. */ #define NM2_MIXER_STATUS_OFFSET 0xa06 #define NM2_MIXER_READY_MASK 0x0800 /* The playback registers start from here. */ #define NM_PLAYBACK_REG_OFFSET 0x0 /* The record registers start from here. */ #define NM_RECORD_REG_OFFSET 0x200 /* The rate register is located 2 bytes from the start of the register area. */ #define NM_RATE_REG_OFFSET 2 /* Mono/stereo flag, number of bits on playback, and rate mask. */ #define NM_RATE_STEREO 1 #define NM_RATE_BITS_16 2 #define NM_RATE_MASK 0xf0 /* Playback enable register. */ #define NM_PLAYBACK_ENABLE_REG (NM_PLAYBACK_REG_OFFSET + 0x1) #define NM_PLAYBACK_ENABLE_FLAG 1 #define NM_PLAYBACK_ONESHOT 2 #define NM_PLAYBACK_FREERUN 4 /* Mutes the audio output. */ #define NM_AUDIO_MUTE_REG (NM_PLAYBACK_REG_OFFSET + 0x18) #define NM_AUDIO_MUTE_LEFT 0x8000 #define NM_AUDIO_MUTE_RIGHT 0x0080 /* Recording enable register. */ #define NM_RECORD_ENABLE_REG (NM_RECORD_REG_OFFSET + 0) #define NM_RECORD_ENABLE_FLAG 1 #define NM_RECORD_FREERUN 2 #define NM_RBUFFER_START (NM_RECORD_REG_OFFSET + 0x4) #define NM_RBUFFER_END (NM_RECORD_REG_OFFSET + 0x10) #define NM_RBUFFER_WMARK (NM_RECORD_REG_OFFSET + 0xc) #define NM_RBUFFER_CURRP (NM_RECORD_REG_OFFSET + 0x8) #define NM_PBUFFER_START (NM_PLAYBACK_REG_OFFSET + 0x4) #define NM_PBUFFER_END (NM_PLAYBACK_REG_OFFSET + 0x14) #define NM_PBUFFER_WMARK (NM_PLAYBACK_REG_OFFSET + 0xc) #define NM_PBUFFER_CURRP (NM_PLAYBACK_REG_OFFSET + 0x8) /* A few trivial routines to make it easier to work with the registers on the chip. */ /* This is a common code portion used to fix up the port offsets. */ #define NM_FIX_PORT \ if (port < 1 || port > 2 || card == NULL) \ return -1; \ \ if (offset < card->port[port - 1].start_offset \ || offset >= card->port[port - 1].end_offset) { \ printk (KERN_ERR "Bad access: port %d, offset 0x%x\n", port, offset); \ return -1; \ } \ offset -= card->port[port - 1].start_offset; #define DEFwritePortX(X, func) \ static inline int nm256_writePort##X (struct nm256_info *card,\ int port, int offset, int value)\ {\ u##X __iomem *addr;\ \ if (nm256_debug > 1)\ printk (KERN_DEBUG "Writing 0x%x to %d:0x%x\n", value, port, offset);\ \ NM_FIX_PORT;\ \ addr = (u##X __iomem *)(card->port[port - 1].ptr + offset);\ func (value, addr);\ return 0;\ } DEFwritePortX (8, writeb) DEFwritePortX (16, writew) DEFwritePortX (32, writel) #define DEFreadPortX(X, func) \ static inline u##X nm256_readPort##X (struct nm256_info *card,\ int port, int offset)\ {\ u##X __iomem *addr;\ \ NM_FIX_PORT\ \ addr = (u##X __iomem *)(card->port[port - 1].ptr + offset);\ return func(addr);\ } DEFreadPortX (8, readb) DEFreadPortX (16, readw) DEFreadPortX (32, readl) static inline int nm256_writeBuffer8 (struct nm256_info *card, u8 *src, int port, int offset, int amt) { NM_FIX_PORT; memcpy_toio (card->port[port - 1].ptr + offset, src, amt); return 0; } static inline int nm256_readBuffer8 (struct nm256_info *card, u8 *dst, int port, int offset, int amt) { NM_FIX_PORT; memcpy_fromio (dst, card->port[port - 1].ptr + offset, amt); return 0; } /* Returns a non-zero value if we should use the coefficient cache. */ static int nm256_cachedCoefficients (struct nm256_info *card); #endif /* * Local variables: * c-basic-offset: 4 * End: */