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-rw-r--r--drivers/sound/nm256.h124
1 files changed, 80 insertions, 44 deletions
diff --git a/drivers/sound/nm256.h b/drivers/sound/nm256.h
index 4cc720ab9..c640b88ce 100644
--- a/drivers/sound/nm256.h
+++ b/drivers/sound/nm256.h
@@ -3,10 +3,12 @@
#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. */
@@ -34,10 +36,12 @@ struct nm256_info
/* 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. */
+ /*
+ * 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;
@@ -46,25 +50,40 @@ struct nm256_info
/* Ditto for recording a sample. */
int recording;
- /* The two memory ports. */
- char *ports[2];
-
- /* Starting offset of the port1 area mapped into memory. */
- u32 port1_start;
- /* Ending offset. */
- u32 port1_end;
- /* The offset of the end of the actual buffer area. */
- u32 bufend;
+ /* The two memory ports. */
+ struct nm256_ports {
+ /* Physical address of the port. */
+ u32 physaddr;
+ /* Our mapped-in pointer. */
+ char *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;
@@ -77,7 +96,7 @@ struct nm256_info
/* The start of the block currently playing. */
u32 curPlayPos;
- /* The amount of data we requested to record. */
+ /* The amount of data we were requested to record. */
u32 requestedRecAmt;
/* The offset of the currently-recording block. */
u32 curRecPos;
@@ -107,10 +126,17 @@ struct nm256_info
/* Debug flag--bigger numbers mean more output. */
extern int nm256_debug;
-/* Size of the second memory port. */
+/* 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 location of the mixer. */
-#define NM_MIXER_BASE 0x600
+
+/* 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
@@ -123,21 +149,33 @@ extern int nm256_debug;
#define NM_MISC_INT_2 0x1
#define NM_ACK_INT(CARD, X) nm256_writePort16((CARD), 2, NM_INT_REG, (X) << 1)
-/* For the second revision. It uses the same interrupt register, but it
- holds 32 bits instead of 16. */
+/* 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. */
+/* 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. */
@@ -156,7 +194,7 @@ extern int nm256_debug;
#define NM_AUDIO_MUTE_LEFT 0x8000
#define NM_AUDIO_MUTE_RIGHT 0x0080
-/* Recording enable register */
+/* Recording enable register. */
#define NM_RECORD_ENABLE_REG (NM_RECORD_REG_OFFSET + 0)
#define NM_RECORD_ENABLE_FLAG 1
#define NM_RECORD_FREERUN 2
@@ -179,26 +217,25 @@ extern int nm256_debug;
if (port < 1 || port > 2 || card == NULL) \
return -1; \
\
- if (port == 1) { \
- if (offset < card->port1_start || offset >= card->port1_end) { \
- printk (KERN_ERR "Bad port request port 1:0x%x\n", offset); \
- return -1; \
- } \
- offset -= card->port1_start; \
- } else if (offset < 0 || offset > 4096) { \
- printk (KERN_ERR "Bad port request port 2: 0x%x\n", offset); \
- 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)\
+ int port, int offset, int value)\
{\
u##X *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 *)(card->ports[port - 1] + offset);\
+ addr = (u##X *)(card->port[port - 1].ptr + offset);\
func (value, addr);\
return 0;\
}
@@ -207,29 +244,28 @@ DEFwritePortX (8, writeb)
DEFwritePortX (16, writew)
DEFwritePortX (32, writel)
-#define DEFreadPortX(X) \
+#define DEFreadPortX(X, func) \
static inline u##X nm256_readPort##X (struct nm256_info *card,\
int port, int offset)\
{\
- u##X *addr, res;\
+ u##X *addr;\
\
NM_FIX_PORT\
\
- addr = (u##X *)(card->ports[port - 1] + offset);\
- memcpy_fromio (&res, addr, sizeof (res));\
- return res;\
+ addr = (u##X *)(card->port[port - 1].ptr + offset);\
+ return func(addr);\
}
-DEFreadPortX (8)
-DEFreadPortX (16)
-DEFreadPortX (32)
+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->ports[port - 1] + offset, src, amt);
+ memcpy_toio (card->port[port - 1].ptr + offset, src, amt);
return 0;
}
@@ -238,7 +274,7 @@ nm256_readBuffer8 (struct nm256_info *card, u8 *dst, int port, int offset,
int amt)
{
NM_FIX_PORT;
- memcpy_fromio (dst, card->ports[port - 1] + offset, amt);
+ memcpy_fromio (dst, card->port[port - 1].ptr + offset, amt);
return 0;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-06 16:24:13 +0000