diff options
Diffstat (limited to 'sound/sparc/dbri.c')
| -rw-r--r-- | sound/sparc/dbri.c | 817 |
1 files changed, 387 insertions, 430 deletions
diff --git a/sound/sparc/dbri.c b/sound/sparc/dbri.c index f3ae6e23610e..8016541ec16d 100644 --- a/sound/sparc/dbri.c +++ b/sound/sparc/dbri.c @@ -2,6 +2,8 @@ * Driver for DBRI sound chip found on Sparcs. * Copyright (C) 2004, 2005 Martin Habets (mhabets@users.sourceforge.net) * + * Converted to ring buffered version by Krzysztof Helt (krzysztof.h1@wp.pl) + * * Based entirely upon drivers/sbus/audio/dbri.c which is: * Copyright (C) 1997 Rudolf Koenig (rfkoenig@immd4.informatik.uni-erlangen.de) * Copyright (C) 1998, 1999 Brent Baccala (baccala@freesoft.org) @@ -34,7 +36,7 @@ * (the second one is a monitor/tee pipe, valid only for serial input). * * The mmcodec is connected via the CHI bus and needs the data & some - * parameters (volume, balance, output selection) timemultiplexed in 8 byte + * parameters (volume, output selection) timemultiplexed in 8 byte * chunks. It also has a control mode, which serves for audio format setting. * * Looking at the CS4215 data sheet it is easy to set up 2 or 4 codecs on @@ -83,7 +85,7 @@ MODULE_PARM_DESC(id, "ID string for Sun DBRI soundcard."); module_param_array(enable, bool, NULL, 0444); MODULE_PARM_DESC(enable, "Enable Sun DBRI soundcard."); -#define DBRI_DEBUG +#undef DBRI_DEBUG #define D_INT (1<<0) #define D_GEN (1<<1) @@ -104,17 +106,15 @@ static char *cmds[] = { #define dprintk(a, x...) if(dbri_debug & a) printk(KERN_DEBUG x) -#define DBRI_CMD(cmd, intr, value) ((cmd << 28) | \ - (1 << 27) | \ - value) #else -#define dprintk(a, x...) +#define dprintk(a, x...) do { } while (0) -#define DBRI_CMD(cmd, intr, value) ((cmd << 28) | \ - (intr << 27) | \ - value) #endif /* DBRI_DEBUG */ +#define DBRI_CMD(cmd, intr, value) ((cmd << 28) | \ + (intr << 27) | \ + value) + /*************************************************************************** CS4215 specific definitions and structures ****************************************************************************/ @@ -160,7 +160,7 @@ static struct { /* { NA, (1 << 4), (5 << 3) }, */ { 48000, (1 << 4), (6 << 3) }, { 9600, (1 << 4), (7 << 3) }, - { 5513, (2 << 4), (0 << 3) }, /* Actually 5512.5 */ + { 5512, (2 << 4), (0 << 3) }, /* Actually 5512.5 */ { 11025, (2 << 4), (1 << 3) }, { 18900, (2 << 4), (2 << 3) }, { 22050, (2 << 4), (3 << 3) }, @@ -240,28 +240,21 @@ static struct { #define REG9 0x24UL /* Interrupt Queue Pointer */ #define DBRI_NO_CMDS 64 -#define DBRI_NO_INTS 1 /* Note: the value of this define was - * originally 2. The ringbuffer to store - * interrupts in dma is currently broken. - * This is a temporary fix until the ringbuffer - * is fixed. - */ #define DBRI_INT_BLK 64 #define DBRI_NO_DESCS 64 #define DBRI_NO_PIPES 32 - -#define DBRI_MM_ONB 1 -#define DBRI_MM_SB 2 +#define DBRI_MAX_PIPE (DBRI_NO_PIPES - 1) #define DBRI_REC 0 #define DBRI_PLAY 1 #define DBRI_NO_STREAMS 2 /* One transmit/receive descriptor */ +/* When ba != 0 descriptor is used */ struct dbri_mem { volatile __u32 word1; - volatile __u32 ba; /* Transmit/Receive Buffer Address */ - volatile __u32 nda; /* Next Descriptor Address */ + __u32 ba; /* Transmit/Receive Buffer Address */ + __u32 nda; /* Next Descriptor Address */ volatile __u32 word4; }; @@ -269,8 +262,8 @@ struct dbri_mem { * the CPU and the DBRI */ struct dbri_dma { - volatile s32 cmd[DBRI_NO_CMDS]; /* Place for commands */ - volatile s32 intr[DBRI_NO_INTS * DBRI_INT_BLK]; /* Interrupt field */ + s32 cmd[DBRI_NO_CMDS]; /* Place for commands */ + volatile s32 intr[DBRI_INT_BLK]; /* Interrupt field */ struct dbri_mem desc[DBRI_NO_DESCS]; /* Xmit/receive descriptors */ }; @@ -282,58 +275,43 @@ enum in_or_out { PIPEinput, PIPEoutput }; struct dbri_pipe { u32 sdp; /* SDP command word */ - enum in_or_out direction; int nextpipe; /* Next pipe in linked list */ - int prevpipe; - int cycle; /* Offset of timeslot (bits) */ int length; /* Length of timeslot (bits) */ int first_desc; /* Index of first descriptor */ int desc; /* Index of active descriptor */ volatile __u32 *recv_fixed_ptr; /* Ptr to receive fixed data */ }; -struct dbri_desc { - int inuse; /* Boolean flag */ - int next; /* Index of next desc, or -1 */ - unsigned int len; -}; - /* Per stream (playback or record) information */ struct dbri_streaminfo { struct snd_pcm_substream *substream; u32 dvma_buffer; /* Device view of Alsa DMA buffer */ - int left; /* # of bytes left in DMA buffer */ int size; /* Size of DMA buffer */ size_t offset; /* offset in user buffer */ int pipe; /* Data pipe used */ int left_gain; /* mixer elements */ int right_gain; - int balance; }; /* This structure holds the information for both chips (DBRI & CS4215) */ struct snd_dbri { struct snd_card *card; /* ALSA card */ - struct snd_pcm *pcm; int regs_size, irq; /* Needed for unload */ struct sbus_dev *sdev; /* SBUS device info */ spinlock_t lock; - volatile struct dbri_dma *dma; /* Pointer to our DMA block */ + struct dbri_dma *dma; /* Pointer to our DMA block */ u32 dma_dvma; /* DBRI visible DMA address */ void __iomem *regs; /* dbri HW regs */ - int dbri_version; /* 'e' and up is OK */ int dbri_irqp; /* intr queue pointer */ - int wait_send; /* sequence of command buffers send */ - int wait_ackd; /* sequence of command buffers acknowledged */ struct dbri_pipe pipes[DBRI_NO_PIPES]; /* DBRI's 32 data pipes */ - struct dbri_desc descs[DBRI_NO_DESCS]; + int next_desc[DBRI_NO_DESCS]; /* Index of next desc, or -1 */ + spinlock_t cmdlock; /* Protects cmd queue accesses */ + s32 *cmdptr; /* Pointer to the last queued cmd */ - int chi_in_pipe; - int chi_out_pipe; int chi_bpf; struct cs4215 mm; /* mmcodec special info */ @@ -345,8 +323,6 @@ struct snd_dbri { #define DBRI_MAX_VOLUME 63 /* Output volume */ #define DBRI_MAX_GAIN 15 /* Input gain */ -#define DBRI_RIGHT_BALANCE 255 -#define DBRI_MID_BALANCE (DBRI_RIGHT_BALANCE >> 1) /* DBRI Reg0 - Status Control Register - defines. (Page 17) */ #define D_P (1<<15) /* Program command & queue pointer valid */ @@ -569,7 +545,7 @@ struct snd_dbri { #define DBRI_TD_TBC (1<<0) /* Transmit buffer Complete */ #define DBRI_TD_STATUS(v) ((v)&0xff) /* Transmit status */ /* Maximum buffer size per TD: almost 8Kb */ -#define DBRI_TD_MAXCNT ((1 << 13) - 1) +#define DBRI_TD_MAXCNT ((1 << 13) - 4) /* Receive descriptor defines */ #define DBRI_RD_F (1<<31) /* End of Frame */ @@ -633,93 +609,124 @@ The list is terminated with a WAIT command, which generates a CPU interrupt to signal completion. Since the DBRI can run in parallel with the CPU, several means of -synchronization present themselves. The method implemented here is close -to the original scheme (Rudolf's), and uses 2 counters (wait_send and -wait_ackd) to synchronize the command buffer between the CPU and the DBRI. +synchronization present themselves. The method implemented here is only +use of the dbri_cmdwait() to wait for execution of batch of sent commands. -A more sophisticated scheme might involve a circular command buffer -or an array of command buffers. A routine could fill one with -commands and link it onto a list. When a interrupt signaled -completion of the current command buffer, look on the list for -the next one. +A circular command buffer is used here. A new command is being added +while another can be executed. The scheme works by adding two WAIT commands +after each sent batch of commands. When the next batch is prepared it is +added after the WAIT commands then the WAITs are replaced with single JUMP +command to the new batch. The the DBRI is forced to reread the last WAIT +command (replaced by the JUMP by then). If the DBRI is still executing +previous commands the request to reread the WAIT command is ignored. Every time a routine wants to write commands to the DBRI, it must -first call dbri_cmdlock() and get an initial pointer into dbri->dma->cmd -in return. dbri_cmdlock() will block if the previous commands have not -been completed yet. After this the commands can be written to the buffer, -and dbri_cmdsend() is called with the final pointer value to send them -to the DBRI. +first call dbri_cmdlock() and get pointer to a free space in +dbri->dma->cmd buffer. After this, the commands can be written to +the buffer, and dbri_cmdsend() is called with the final pointer value +to send them to the DBRI. */ -static void dbri_process_interrupt_buffer(struct snd_dbri * dbri); - -enum dbri_lock { NoGetLock, GetLock }; -#define MAXLOOPS 10 - -static volatile s32 *dbri_cmdlock(struct snd_dbri * dbri, enum dbri_lock get) +#define MAXLOOPS 20 +/* + * Wait for the current command string to execute + */ +static void dbri_cmdwait(struct snd_dbri *dbri) { int maxloops = MAXLOOPS; - -#ifndef SMP - if ((get == GetLock) && spin_is_locked(&dbri->lock)) { - printk(KERN_ERR "DBRI: cmdlock called while in spinlock."); - } -#endif + unsigned long flags; /* Delay if previous commands are still being processed */ - while ((--maxloops) > 0 && (dbri->wait_send != dbri->wait_ackd)) { + spin_lock_irqsave(&dbri->lock, flags); + while ((--maxloops) > 0 && (sbus_readl(dbri->regs + REG0) & D_P)) { + spin_unlock_irqrestore(&dbri->lock, flags); msleep_interruptible(1); - /* If dbri_cmdlock() got called from inside the - * interrupt handler, this will do the processing. - */ - dbri_process_interrupt_buffer(dbri); + spin_lock_irqsave(&dbri->lock, flags); } + spin_unlock_irqrestore(&dbri->lock, flags); + if (maxloops == 0) { - printk(KERN_ERR "DBRI: Chip never completed command buffer %d\n", - dbri->wait_send); + printk(KERN_ERR "DBRI: Chip never completed command buffer\n"); } else { dprintk(D_CMD, "Chip completed command buffer (%d)\n", MAXLOOPS - maxloops - 1); } +} +/* + * Lock the command queue and returns pointer to a space for len cmd words + * It locks the cmdlock spinlock. + */ +static s32 *dbri_cmdlock(struct snd_dbri * dbri, int len) +{ + /* Space for 2 WAIT cmds (replaced later by 1 JUMP cmd) */ + len += 2; + spin_lock(&dbri->cmdlock); + if (dbri->cmdptr - dbri->dma->cmd + len < DBRI_NO_CMDS - 2) + return dbri->cmdptr + 2; + else if (len < sbus_readl(dbri->regs + REG8) - dbri->dma_dvma) + return dbri->dma->cmd; + else + printk(KERN_ERR "DBRI: no space for commands."); - /*if (get == GetLock) spin_lock(&dbri->lock); */ - return &dbri->dma->cmd[0]; + return NULL; } -static void dbri_cmdsend(struct snd_dbri * dbri, volatile s32 * cmd) +/* + * Send prepared cmd string. It works by writting a JUMP cmd into + * the last WAIT cmd and force DBRI to reread the cmd. + * The JUMP cmd points to the new cmd string. + * It also releases the cmdlock spinlock. + * + * Lock must not be held before calling this. + */ +static void dbri_cmdsend(struct snd_dbri * dbri, s32 * cmd,int len) { - volatile s32 *ptr; - u32 reg; + s32 tmp, addr; + static int wait_id = 0; - for (ptr = &dbri->dma->cmd[0]; ptr < cmd; ptr++) { - dprintk(D_CMD, "cmd: %lx:%08x\n", (unsigned long)ptr, *ptr); - } + wait_id++; + wait_id &= 0xffff; /* restrict it to a 16 bit counter. */ + *(cmd) = DBRI_CMD(D_WAIT, 1, wait_id); + *(cmd+1) = DBRI_CMD(D_WAIT, 1, wait_id); - if ((cmd - &dbri->dma->cmd[0]) >= DBRI_NO_CMDS - 1) { - printk(KERN_ERR "DBRI: Command buffer overflow! (bug in driver)\n"); - /* Ignore the last part. */ - cmd = &dbri->dma->cmd[DBRI_NO_CMDS - 3]; - } + /* Replace the last command with JUMP */ + addr = dbri->dma_dvma + (cmd - len - dbri->dma->cmd) * sizeof(s32); + *(dbri->cmdptr+1) = addr; + *(dbri->cmdptr) = DBRI_CMD(D_JUMP, 0, 0); - dbri->wait_send++; - dbri->wait_send &= 0xffff; /* restrict it to a 16 bit counter. */ - *(cmd++) = DBRI_CMD(D_PAUSE, 0, 0); - *(cmd++) = DBRI_CMD(D_WAIT, 1, dbri->wait_send); +#ifdef DBRI_DEBUG + if (cmd > dbri->cmdptr) { + s32 *ptr; + + for (ptr = dbri->cmdptr; ptr < cmd+2; ptr++) + dprintk(D_CMD, "cmd: %lx:%08x\n", (unsigned long)ptr, *ptr); + } else { + s32 *ptr = dbri->cmdptr; - /* Set command pointer and signal it is valid. */ - sbus_writel(dbri->dma_dvma, dbri->regs + REG8); - reg = sbus_readl(dbri->regs + REG0); - reg |= D_P; - sbus_writel(reg, dbri->regs + REG0); + dprintk(D_CMD, "cmd: %lx:%08x\n", (unsigned long)ptr, *ptr); + ptr++; + dprintk(D_CMD, "cmd: %lx:%08x\n", (unsigned long)ptr, *ptr); + for (ptr = dbri->dma->cmd; ptr < cmd+2; ptr++) { + dprintk(D_CMD, "cmd: %lx:%08x\n", (unsigned long)ptr, *ptr); + } + } +#endif + + /* Reread the last command */ + tmp = sbus_readl(dbri->regs + REG0); + tmp |= D_P; + sbus_writel(tmp, dbri->regs + REG0); - /*spin_unlock(&dbri->lock); */ + dbri->cmdptr = cmd; + spin_unlock(&dbri->cmdlock); } /* Lock must be held when calling this */ static void dbri_reset(struct snd_dbri * dbri) { int i; + u32 tmp; dprintk(D_GEN, "reset 0:%x 2:%x 8:%x 9:%x\n", sbus_readl(dbri->regs + REG0), @@ -729,13 +736,20 @@ static void dbri_reset(struct snd_dbri * dbri) sbus_writel(D_R, dbri->regs + REG0); /* Soft Reset */ for (i = 0; (sbus_readl(dbri->regs + REG0) & D_R) && i < 64; i++) udelay(10); + + /* A brute approach - DBRI falls back to working burst size by itself + * On SS20 D_S does not work, so do not try so high. */ + tmp = sbus_readl(dbri->regs + REG0); + tmp |= D_G | D_E; + tmp &= ~D_S; + sbus_writel(tmp, dbri->regs + REG0); } /* Lock must not be held before calling this */ static void dbri_initialize(struct snd_dbri * dbri) { - volatile s32 *cmd; - u32 dma_addr, tmp; + s32 *cmd; + u32 dma_addr; unsigned long flags; int n; @@ -743,42 +757,34 @@ static void dbri_initialize(struct snd_dbri * dbri) dbri_reset(dbri); - cmd = dbri_cmdlock(dbri, NoGetLock); - dprintk(D_GEN, "init: cmd: %p, int: %p\n", - &dbri->dma->cmd[0], &dbri->dma->intr[0]); + /* Initialize pipes */ + for (n = 0; n < DBRI_NO_PIPES; n++) + dbri->pipes[n].desc = dbri->pipes[n].first_desc = -1; + spin_lock_init(&dbri->cmdlock); /* * Initialize the interrupt ringbuffer. */ - for (n = 0; n < DBRI_NO_INTS - 1; n++) { - dma_addr = dbri->dma_dvma; - dma_addr += dbri_dma_off(intr, ((n + 1) & DBRI_INT_BLK)); - dbri->dma->intr[n * DBRI_INT_BLK] = dma_addr; - } dma_addr = dbri->dma_dvma + dbri_dma_off(intr, 0); - dbri->dma->intr[n * DBRI_INT_BLK] = dma_addr; + dbri->dma->intr[0] = dma_addr; dbri->dbri_irqp = 1; - - /* Initialize pipes */ - for (n = 0; n < DBRI_NO_PIPES; n++) - dbri->pipes[n].desc = dbri->pipes[n].first_desc = -1; - - /* A brute approach - DBRI falls back to working burst size by itself - * On SS20 D_S does not work, so do not try so high. */ - tmp = sbus_readl(dbri->regs + REG0); - tmp |= D_G | D_E; - tmp &= ~D_S; - sbus_writel(tmp, dbri->regs + REG0); - /* * Set up the interrupt queue */ - dma_addr = dbri->dma_dvma + dbri_dma_off(intr, 0); + spin_lock(&dbri->cmdlock); + cmd = dbri->cmdptr = dbri->dma->cmd; *(cmd++) = DBRI_CMD(D_IIQ, 0, 0); *(cmd++) = dma_addr; + *(cmd++) = DBRI_CMD(D_PAUSE, 0, 0); + dbri->cmdptr = cmd; + *(cmd++) = DBRI_CMD(D_WAIT, 1, 0); + *(cmd++) = DBRI_CMD(D_WAIT, 1, 0); + dma_addr = dbri->dma_dvma + dbri_dma_off(cmd, 0); + sbus_writel(dma_addr, dbri->regs + REG8); + spin_unlock(&dbri->cmdlock); - dbri_cmdsend(dbri, cmd); spin_unlock_irqrestore(&dbri->lock, flags); + dbri_cmdwait(dbri); } /* @@ -809,9 +815,9 @@ static void reset_pipe(struct snd_dbri * dbri, int pipe) { int sdp; int desc; - volatile int *cmd; + s32 *cmd; - if (pipe < 0 || pipe > 31) { + if (pipe < 0 || pipe > DBRI_MAX_PIPE) { printk(KERN_ERR "DBRI: reset_pipe called with illegal pipe number\n"); return; } @@ -822,25 +828,29 @@ static void reset_pipe(struct snd_dbri * dbri, int pipe) return; } - cmd = dbri_cmdlock(dbri, NoGetLock); + cmd = dbri_cmdlock(dbri, 3); *(cmd++) = DBRI_CMD(D_SDP, 0, sdp | D_SDP_C | D_SDP_P); *(cmd++) = 0; - dbri_cmdsend(dbri, cmd); + *(cmd++) = DBRI_CMD(D_PAUSE, 0, 0); + dbri_cmdsend(dbri, cmd, 3); desc = dbri->pipes[pipe].first_desc; - while (desc != -1) { - dbri->descs[desc].inuse = 0; - desc = dbri->descs[desc].next; - } + if ( desc >= 0) + do { + dbri->dma->desc[desc].nda = dbri->dma->desc[desc].ba = 0; + desc = dbri->next_desc[desc]; + } while (desc != -1 && desc != dbri->pipes[pipe].first_desc); dbri->pipes[pipe].desc = -1; dbri->pipes[pipe].first_desc = -1; } -/* FIXME: direction as an argument? */ +/* + * Lock must be held before calling this. + */ static void setup_pipe(struct snd_dbri * dbri, int pipe, int sdp) { - if (pipe < 0 || pipe > 31) { + if (pipe < 0 || pipe > DBRI_MAX_PIPE) { printk(KERN_ERR "DBRI: setup_pipe called with illegal pipe number\n"); return; } @@ -860,119 +870,87 @@ static void setup_pipe(struct snd_dbri * dbri, int pipe, int sdp) dbri->pipes[pipe].sdp = sdp; dbri->pipes[pipe].desc = -1; dbri->pipes[pipe].first_desc = -1; - if (sdp & D_SDP_TO_SER) - dbri->pipes[pipe].direction = PIPEoutput; - else - dbri->pipes[pipe].direction = PIPEinput; reset_pipe(dbri, pipe); } -/* FIXME: direction not needed */ +/* + * Lock must be held before calling this. + */ static void link_time_slot(struct snd_dbri * dbri, int pipe, - enum in_or_out direction, int basepipe, + int prevpipe, int nextpipe, int length, int cycle) { - volatile s32 *cmd; + s32 *cmd; int val; - int prevpipe; - int nextpipe; - if (pipe < 0 || pipe > 31 || basepipe < 0 || basepipe > 31) { + if (pipe < 0 || pipe > DBRI_MAX_PIPE + || prevpipe < 0 || prevpipe > DBRI_MAX_PIPE + || nextpipe < 0 || nextpipe > DBRI_MAX_PIPE) { printk(KERN_ERR "DBRI: link_time_slot called with illegal pipe number\n"); return; } - if (dbri->pipes[pipe].sdp == 0 || dbri->pipes[basepipe].sdp == 0) { + if (dbri->pipes[pipe].sdp == 0 + || dbri->pipes[prevpipe].sdp == 0 + || dbri->pipes[nextpipe].sdp == 0) { printk(KERN_ERR "DBRI: link_time_slot called on uninitialized pipe\n"); return; } - /* Deal with CHI special case: - * "If transmission on edges 0 or 1 is desired, then cycle n - * (where n = # of bit times per frame...) must be used." - * - DBRI data sheet, page 11 - */ - if (basepipe == 16 && direction == PIPEoutput && cycle == 0) - cycle = dbri->chi_bpf; - - if (basepipe == pipe) { - prevpipe = pipe; - nextpipe = pipe; - } else { - /* We're not initializing a new linked list (basepipe != pipe), - * so run through the linked list and find where this pipe - * should be sloted in, based on its cycle. CHI confuses - * things a bit, since it has a single anchor for both its - * transmit and receive lists. - */ - if (basepipe == 16) { - if (direction == PIPEinput) { - prevpipe = dbri->chi_in_pipe; - } else { - prevpipe = dbri->chi_out_pipe; - } - } else { - prevpipe = basepipe; - } - - nextpipe = dbri->pipes[prevpipe].nextpipe; - - while (dbri->pipes[nextpipe].cycle < cycle - && dbri->pipes[nextpipe].nextpipe != basepipe) { - prevpipe = nextpipe; - nextpipe = dbri->pipes[nextpipe].nextpipe; - } - } - - if (prevpipe == 16) { - if (direction == PIPEinput) { - dbri->chi_in_pipe = pipe; - } else { - dbri->chi_out_pipe = pipe; - } - } else { - dbri->pipes[prevpipe].nextpipe = pipe; - } - + dbri->pipes[prevpipe].nextpipe = pipe; dbri->pipes[pipe].nextpipe = nextpipe; - dbri->pipes[pipe].cycle = cycle; dbri->pipes[pipe].length = length; - cmd = dbri_cmdlock(dbri, NoGetLock); + cmd = dbri_cmdlock(dbri, 4); - if (direction == PIPEinput) { - val = D_DTS_VI | D_DTS_INS | D_DTS_PRVIN(prevpipe) | pipe; + if (dbri->pipes[pipe].sdp & D_SDP_TO_SER) { + /* Deal with CHI special case: + * "If transmission on edges 0 or 1 is desired, then cycle n + * (where n = # of bit times per frame...) must be used." + * - DBRI data sheet, page 11 + */ + if (prevpipe == 16 && cycle == 0) + cycle = dbri->chi_bpf; + + val = D_DTS_VO | D_DTS_INS | D_DTS_PRVOUT(prevpipe) | pipe; *(cmd++) = DBRI_CMD(D_DTS, 0, val); + *(cmd++) = 0; *(cmd++) = D_TS_LEN(length) | D_TS_CYCLE(cycle) | D_TS_NEXT(nextpipe); - *(cmd++) = 0; } else { - val = D_DTS_VO | D_DTS_INS | D_DTS_PRVOUT(prevpipe) | pipe; + val = D_DTS_VI | D_DTS_INS | D_DTS_PRVIN(prevpipe) | pipe; *(cmd++) = DBRI_CMD(D_DTS, 0, val); - *(cmd++) = 0; *(cmd++) = D_TS_LEN(length) | D_TS_CYCLE(cycle) | D_TS_NEXT(nextpipe); + *(cmd++) = 0; } + *(cmd++) = DBRI_CMD(D_PAUSE, 0, 0); - dbri_cmdsend(dbri, cmd); + dbri_cmdsend(dbri, cmd, 4); } +#if 0 +/* + * Lock must be held before calling this. + */ static void unlink_time_slot(struct snd_dbri * dbri, int pipe, enum in_or_out direction, int prevpipe, int nextpipe) { - volatile s32 *cmd; + s32 *cmd; int val; - if (pipe < 0 || pipe > 31 || prevpipe < 0 || prevpipe > 31) { + if (pipe < 0 || pipe > DBRI_MAX_PIPE + || prevpipe < 0 || prevpipe > DBRI_MAX_PIPE + || nextpipe < 0 || nextpipe > DBRI_MAX_PIPE) { printk(KERN_ERR "DBRI: unlink_time_slot called with illegal pipe number\n"); return; } - cmd = dbri_cmdlock(dbri, NoGetLock); + cmd = dbri_cmdlock(dbri, 4); if (direction == PIPEinput) { val = D_DTS_VI | D_DTS_DEL | D_DTS_PRVIN(prevpipe) | pipe; @@ -985,9 +963,11 @@ static void unlink_time_slot(struct snd_dbri * dbri, int pipe, *(cmd++) = 0; *(cmd++) = D_TS_NEXT(nextpipe); } + *(cmd++) = DBRI_CMD(D_PAUSE, 0, 0); - dbri_cmdsend(dbri, cmd); + dbri_cmdsend(dbri, cmd, 4); } +#endif /* xmit_fixed() / recv_fixed() * @@ -1001,13 +981,16 @@ static void unlink_time_slot(struct snd_dbri * dbri, int pipe, * the actual time slot is. The interrupt handler takes care of bit * ordering and alignment. An 8-bit time slot will always end up * in the low-order 8 bits, filled either MSB-first or LSB-first, - * depending on the settings passed to setup_pipe() + * depending on the settings passed to setup_pipe(). + * + * Lock must not be held before calling it. */ static void xmit_fixed(struct snd_dbri * dbri, int pipe, unsigned int data) { - volatile s32 *cmd; + s32 *cmd; + unsigned long flags; - if (pipe < 16 || pipe > 31) { + if (pipe < 16 || pipe > DBRI_MAX_PIPE) { printk(KERN_ERR "DBRI: xmit_fixed: Illegal pipe number\n"); return; } @@ -1032,17 +1015,22 @@ static void xmit_fixed(struct snd_dbri * dbri, int pipe, unsigned int data) if (dbri->pipes[pipe].sdp & D_SDP_MSB) data = reverse_bytes(data, dbri->pipes[pipe].length); - cmd = dbri_cmdlock(dbri, GetLock); + cmd = dbri_cmdlock(dbri, 3); *(cmd++) = DBRI_CMD(D_SSP, 0, pipe); *(cmd++) = data; + *(cmd++) = DBRI_CMD(D_PAUSE, 0, 0); + + spin_lock_irqsave(&dbri->lock, flags); + dbri_cmdsend(dbri, cmd, 3); + spin_unlock_irqrestore(&dbri->lock, flags); + dbri_cmdwait(dbri); - dbri_cmdsend(dbri, cmd); } static void recv_fixed(struct snd_dbri * dbri, int pipe, volatile __u32 * ptr) { - if (pipe < 16 || pipe > 31) { + if (pipe < 16 || pipe > DBRI_MAX_PIPE) { printk(KERN_ERR "DBRI: recv_fixed called with illegal pipe number\n"); return; } @@ -1071,12 +1059,16 @@ static void recv_fixed(struct snd_dbri * dbri, int pipe, volatile __u32 * ptr) * and work by building chains of descriptors which identify the * data buffers. Buffers too large for a single descriptor will * be spread across multiple descriptors. + * + * All descriptors create a ring buffer. + * + * Lock must be held before calling this. */ static int setup_descs(struct snd_dbri * dbri, int streamno, unsigned int period) { struct dbri_streaminfo *info = &dbri->stream_info[streamno]; __u32 dvma_buffer; - int desc = 0; + int desc; int len; int first_desc = -1; int last_desc = -1; @@ -1119,11 +1111,23 @@ static int setup_descs(struct snd_dbri * dbri, int streamno, unsigned int period len &= ~3; } + /* Free descriptors if pipe has any */ + desc = dbri->pipes[info->pipe].first_desc; + if ( desc >= 0) + do { + dbri->dma->desc[desc].nda = dbri->dma->desc[desc].ba = 0; + desc = dbri->next_desc[desc]; + } while (desc != -1 && desc != dbri->pipes[info->pipe].first_desc); + + dbri->pipes[info->pipe].desc = -1; + dbri->pipes[info->pipe].first_desc = -1; + + desc = 0; while (len > 0) { int mylen; for (; desc < DBRI_NO_DESCS; desc++) { - if (!dbri->descs[desc].inuse) + if (!dbri->dma->desc[desc].ba) break; } if (desc == DBRI_NO_DESCS) { @@ -1131,37 +1135,33 @@ static int setup_descs(struct snd_dbri * dbri, int streamno, unsigned int period return -1; } - if (len > DBRI_TD_MAXCNT) { - mylen = DBRI_TD_MAXCNT; /* 8KB - 1 */ - } else { + if (len > DBRI_TD_MAXCNT) + mylen = DBRI_TD_MAXCNT; /* 8KB - 4 */ + else mylen = len; - } - if (mylen > period) { + + if (mylen > period) mylen = period; - } - dbri->descs[desc].inuse = 1; - dbri->descs[desc].next = -1; + dbri->next_desc[desc] = -1; dbri->dma->desc[desc].ba = dvma_buffer; dbri->dma->desc[desc].nda = 0; if (streamno == DBRI_PLAY) { - dbri->descs[desc].len = mylen; dbri->dma->desc[desc].word1 = DBRI_TD_CNT(mylen); dbri->dma->desc[desc].word4 = 0; - if (first_desc != -1) - dbri->dma->desc[desc].word1 |= DBRI_TD_M; + dbri->dma->desc[desc].word1 |= + DBRI_TD_F | DBRI_TD_B; } else { - dbri->descs[desc].len = 0; dbri->dma->desc[desc].word1 = 0; dbri->dma->desc[desc].word4 = DBRI_RD_B | DBRI_RD_BCNT(mylen); } - if (first_desc == -1) { + if (first_desc == -1) first_desc = desc; - } else { - dbri->descs[last_desc].next = desc; + else { + dbri->next_desc[last_desc] = desc; dbri->dma->desc[last_desc].nda = dbri->dma_dvma + dbri_dma_off(desc, desc); } @@ -1176,21 +1176,24 @@ static int setup_descs(struct snd_dbri * dbri, int streamno, unsigned int period return -1; } - dbri->dma->desc[last_desc].word1 &= ~DBRI_TD_M; - if (streamno == DBRI_PLAY) { - dbri->dma->desc[last_desc].word1 |= - DBRI_TD_I | DBRI_TD_F | DBRI_TD_B; - } + dbri->dma->desc[last_desc].nda = + dbri->dma_dvma + dbri_dma_off(desc, first_desc); + dbri->next_desc[last_desc] = first_desc; dbri->pipes[info->pipe].first_desc = first_desc; dbri->pipes[info->pipe].desc = first_desc; - for (desc = first_desc; desc != -1; desc = dbri->descs[desc].next) { +#ifdef DBRI_DEBUG + for (desc = first_desc; desc != -1; ) { dprintk(D_DESC, "DESC %d: %08x %08x %08x %08x\n", desc, dbri->dma->desc[desc].word1, dbri->dma->desc[desc].ba, dbri->dma->desc[desc].nda, dbri->dma->desc[desc].word4); + desc = dbri->next_desc[desc]; + if ( desc == first_desc ) + break; } +#endif return 0; } @@ -1207,56 +1210,30 @@ multiplexed serial interface which the DBRI can operate in either master enum master_or_slave { CHImaster, CHIslave }; +/* + * Lock must not be held before calling it. + */ static void reset_chi(struct snd_dbri * dbri, enum master_or_slave master_or_slave, int bits_per_frame) { - volatile s32 *cmd; + s32 *cmd; int val; - static int chi_initialized = 0; /* FIXME: mutex? */ - - if (!chi_initialized) { - cmd = dbri_cmdlock(dbri, GetLock); - - /* Set CHI Anchor: Pipe 16 */ - - val = D_DTS_VI | D_DTS_INS | D_DTS_PRVIN(16) | D_PIPE(16); - *(cmd++) = DBRI_CMD(D_DTS, 0, val); - *(cmd++) = D_TS_ANCHOR | D_TS_NEXT(16); - *(cmd++) = 0; - - val = D_DTS_VO | D_DTS_INS | D_DTS_PRVOUT(16) | D_PIPE(16); - *(cmd++) = DBRI_CMD(D_DTS, 0, val); - *(cmd++) = 0; - *(cmd++) = D_TS_ANCHOR | D_TS_NEXT(16); + /* Set CHI Anchor: Pipe 16 */ - dbri->pipes[16].sdp = 1; - dbri->pipes[16].nextpipe = 16; - dbri->chi_in_pipe = 16; - dbri->chi_out_pipe = 16; - -#if 0 - chi_initialized++; -#endif - } else { - int pipe; + cmd = dbri_cmdlock(dbri, 4); + val = D_DTS_VO | D_DTS_VI | D_DTS_INS + | D_DTS_PRVIN(16) | D_PIPE(16) | D_DTS_PRVOUT(16); + *(cmd++) = DBRI_CMD(D_DTS, 0, val); + *(cmd++) = D_TS_ANCHOR | D_TS_NEXT(16); + *(cmd++) = D_TS_ANCHOR | D_TS_NEXT(16); + *(cmd++) = DBRI_CMD(D_PAUSE, 0, 0); + dbri_cmdsend(dbri, cmd, 4); - for (pipe = dbri->chi_in_pipe; - pipe != 16; pipe = dbri->pipes[pipe].nextpipe) { - unlink_time_slot(dbri, pipe, PIPEinput, - 16, dbri->pipes[pipe].nextpipe); - } - for (pipe = dbri->chi_out_pipe; - pipe != 16; pipe = dbri->pipes[pipe].nextpipe) { - unlink_time_slot(dbri, pipe, PIPEoutput, - 16, dbri->pipes[pipe].nextpipe); - } + dbri->pipes[16].sdp = 1; + dbri->pipes[16].nextpipe = 16; - dbri->chi_in_pipe = 16; - dbri->chi_out_pipe = 16; - - cmd = dbri_cmdlock(dbri, GetLock); - } + cmd = dbri_cmdlock(dbri, 4); if (master_or_slave == CHIslave) { /* Setup DBRI for CHI Slave - receive clock, frame sync (FS) @@ -1295,8 +1272,9 @@ static void reset_chi(struct snd_dbri * dbri, enum master_or_slave master_or_sla *(cmd++) = DBRI_CMD(D_PAUSE, 0, 0); *(cmd++) = DBRI_CMD(D_CDM, 0, D_CDM_XCE | D_CDM_XEN | D_CDM_REN); + *(cmd++) = DBRI_CMD(D_PAUSE, 0, 0); - dbri_cmdsend(dbri, cmd); + dbri_cmdsend(dbri, cmd, 4); } /* @@ -1307,9 +1285,14 @@ static void reset_chi(struct snd_dbri * dbri, enum master_or_slave master_or_sla In the standard SPARC audio configuration, the CS4215 codec is attached to the DBRI via the CHI interface and few of the DBRI's PIO pins. + * Lock must not be held before calling it. + */ static void cs4215_setup_pipes(struct snd_dbri * dbri) { + unsigned long flags; + + spin_lock_irqsave(&dbri->lock, flags); /* * Data mode: * Pipe 4: Send timeslots 1-4 (audio data) @@ -1333,6 +1316,9 @@ static void cs4215_setup_pipes(struct snd_dbri * dbri) setup_pipe(dbri, 17, D_SDP_FIXED | D_SDP_TO_SER | D_SDP_MSB); setup_pipe(dbri, 18, D_SDP_FIXED | D_SDP_FROM_SER | D_SDP_MSB); setup_pipe(dbri, 19, D_SDP_FIXED | D_SDP_FROM_SER | D_SDP_MSB); + spin_unlock_irqrestore(&dbri->lock, flags); + + dbri_cmdwait(dbri); } static int cs4215_init_data(struct cs4215 *mm) @@ -1364,7 +1350,7 @@ static int cs4215_init_data(struct cs4215 *mm) mm->status = 0; mm->version = 0xff; mm->precision = 8; /* For ULAW */ - mm->channels = 2; + mm->channels = 1; return 0; } @@ -1379,16 +1365,8 @@ static void cs4215_setdata(struct snd_dbri * dbri, int muted) } else { /* Start by setting the playback attenuation. */ struct dbri_streaminfo *info = &dbri->stream_info[DBRI_PLAY]; - int left_gain = info->left_gain % 64; - int right_gain = info->right_gain % 64; - - if (info->balance < DBRI_MID_BALANCE) { - right_gain *= info->balance; - right_gain /= DBRI_MID_BALANCE; - } else { - left_gain *= DBRI_RIGHT_BALANCE - info->balance; - left_gain /= DBRI_MID_BALANCE; - } + int left_gain = info->left_gain & 0x3f; + int right_gain = info->right_gain & 0x3f; dbri->mm.data[0] &= ~0x3f; /* Reset the volume bits */ dbri->mm.data[1] &= ~0x3f; @@ -1397,8 +1375,8 @@ static void cs4215_setdata(struct snd_dbri * dbri, int muted) /* Now set the recording gain. */ info = &dbri->stream_info[DBRI_REC]; - left_gain = info->left_gain % 16; - right_gain = info->right_gain % 16; + left_gain = info->left_gain & 0xf; + right_gain = info->right_gain & 0xf; dbri->mm.data[2] |= CS4215_LG(left_gain); dbri->mm.data[3] |= CS4215_RG(right_gain); } @@ -1413,6 +1391,7 @@ static void cs4215_open(struct snd_dbri * dbri) { int data_width; u32 tmp; + unsigned long flags; dprintk(D_MM, "cs4215_open: %d channels, %d bits\n", dbri->mm.channels, dbri->mm.precision); @@ -1437,6 +1416,7 @@ static void cs4215_open(struct snd_dbri * dbri) * bits. The CS4215, it seems, observes TSIN (the delayed signal) * even if it's the CHI master. Don't ask me... */ + spin_lock_irqsave(&dbri->lock, flags); tmp = sbus_readl(dbri->regs + REG0); tmp &= ~(D_C); /* Disable CHI */ sbus_writel(tmp, dbri->regs + REG0); @@ -1455,15 +1435,16 @@ static void cs4215_open(struct snd_dbri * dbri) */ data_width = dbri->mm.channels * dbri->mm.precision; - link_time_slot(dbri, 20, PIPEoutput, 16, 32, dbri->mm.offset + 32); - link_time_slot(dbri, 4, PIPEoutput, 16, data_width, dbri->mm.offset); - link_time_slot(dbri, 6, PIPEinput, 16, data_width, dbri->mm.offset); - link_time_slot(dbri, 21, PIPEinput, 16, 16, dbri->mm.offset + 40); + link_time_slot(dbri, 4, 16, 16, data_width, dbri->mm.offset); + link_time_slot(dbri, 20, 4, 16, 32, dbri->mm.offset + 32); + link_time_slot(dbri, 6, 16, 16, data_width, dbri->mm.offset); + link_time_slot(dbri, 21, 6, 16, 16, dbri->mm.offset + 40); /* FIXME: enable CHI after _setdata? */ tmp = sbus_readl(dbri->regs + REG0); tmp |= D_C; /* Enable CHI */ sbus_writel(tmp, dbri->regs + REG0); + spin_unlock_irqrestore(&dbri->lock, flags); cs4215_setdata(dbri, 0); } @@ -1475,6 +1456,7 @@ static int cs4215_setctrl(struct snd_dbri * dbri) { int i, val; u32 tmp; + unsigned long flags; /* FIXME - let the CPU do something useful during these delays */ @@ -1511,6 +1493,7 @@ static int cs4215_setctrl(struct snd_dbri * dbri) * done in hardware by a TI 248 that delays the DBRI->4215 * frame sync signal by eight clock cycles. Anybody know why? */ + spin_lock_irqsave(&dbri->lock, flags); tmp = sbus_readl(dbri->regs + REG0); tmp &= ~D_C; /* Disable CHI */ sbus_writel(tmp, dbri->regs + REG0); @@ -1524,17 +1507,20 @@ static int cs4215_setctrl(struct snd_dbri * dbri) * Pipe 19: Receive timeslot 7 (version). */ - link_time_slot(dbri, 17, PIPEoutput, 16, 32, dbri->mm.offset); - link_time_slot(dbri, 18, PIPEinput, 16, 8, dbri->mm.offset); - link_time_slot(dbri, 19, PIPEinput, 16, 8, dbri->mm.offset + 48); + link_time_slot(dbri, 17, 16, 16, 32, dbri->mm.offset); + link_time_slot(dbri, 18, 16, 16, 8, dbri->mm.offset); + link_time_slot(dbri, 19, 18, 16, 8, dbri->mm.offset + 48); + spin_unlock_irqrestore(&dbri->lock, flags); /* Wait for the chip to echo back CLB (Control Latch Bit) as zero */ dbri->mm.ctrl[0] &= ~CS4215_CLB; xmit_fixed(dbri, 17, *(int *)dbri->mm.ctrl); + spin_lock_irqsave(&dbri->lock, flags); tmp = sbus_readl(dbri->regs + REG0); tmp |= D_C; /* Enable CHI */ sbus_writel(tmp, dbri->regs + REG0); + spin_unlock_irqrestore(&dbri->lock, flags); for (i = 10; ((dbri->mm.status & 0xe4) != 0x20); --i) { msleep_interruptible(1); @@ -1614,8 +1600,7 @@ static int cs4215_prepare(struct snd_dbri * dbri, unsigned int rate, CS4215_BSEL_128 | CS4215_FREQ[freq_idx].xtal; dbri->mm.channels = channels; - /* Stereo bit: 8 bit stereo not working yet. */ - if ((channels > 1) && (dbri->mm.precision == 16)) + if (channels == 2) dbri->mm.ctrl[1] |= CS4215_DFR_STEREO; ret = cs4215_setctrl(dbri); @@ -1655,7 +1640,6 @@ static int cs4215_init(struct snd_dbri * dbri) } cs4215_setup_pipes(dbri); - cs4215_init_data(&dbri->mm); /* Enable capture of the status & version timeslots. */ @@ -1684,88 +1668,71 @@ buffer and calls dbri_process_one_interrupt() for each interrupt word. Complicated interrupts are handled by dedicated functions (which appear first in this file). Any pending interrupts can be serviced by calling dbri_process_interrupt_buffer(), which works even if the CPU's -interrupts are disabled. This function is used by dbri_cmdlock() -to make sure we're synced up with the chip before each command sequence, -even if we're running cli'ed. +interrupts are disabled. */ /* xmit_descs() * - * Transmit the current TD's for recording/playing, if needed. + * Starts transmiting the current TD's for recording/playing. * For playback, ALSA has filled the DMA memory with new data (we hope). */ -static void xmit_descs(unsigned long data) +static void xmit_descs(struct snd_dbri *dbri) { - struct snd_dbri *dbri = (struct snd_dbri *) data; struct dbri_streaminfo *info; - volatile s32 *cmd; + s32 *cmd; unsigned long flags; int first_td; if (dbri == NULL) return; /* Disabled */ - /* First check the recording stream for buffer overflow */ info = &dbri->stream_info[DBRI_REC]; spin_lock_irqsave(&dbri->lock, flags); - if ((info->left >= info->size) && (info->pipe >= 0)) { + if (info->pipe >= 0) { first_td = dbri->pipes[info->pipe].first_desc; dprintk(D_DESC, "xmit_descs rec @ TD %d\n", first_td); /* Stream could be closed by the time we run. */ - if (first_td < 0) { - goto play; - } - - cmd = dbri_cmdlock(dbri, NoGetLock); - *(cmd++) = DBRI_CMD(D_SDP, 0, - dbri->pipes[info->pipe].sdp - | D_SDP_P | D_SDP_EVERY | D_SDP_C); - *(cmd++) = dbri->dma_dvma + dbri_dma_off(desc, first_td); - dbri_cmdsend(dbri, cmd); + if (first_td >= 0) { + cmd = dbri_cmdlock(dbri, 2); + *(cmd++) = DBRI_CMD(D_SDP, 0, + dbri->pipes[info->pipe].sdp + | D_SDP_P | D_SDP_EVERY | D_SDP_C); + *(cmd++) = dbri->dma_dvma + dbri_dma_off(desc, first_td); + dbri_cmdsend(dbri, cmd, 2); - /* Reset our admin of the pipe & bytes read. */ - dbri->pipes[info->pipe].desc = first_td; - info->left = 0; + /* Reset our admin of the pipe. */ + dbri->pipes[info->pipe].desc = first_td; + } } -play: - spin_unlock_irqrestore(&dbri->lock, flags); - - /* Now check the playback stream for buffer underflow */ info = &dbri->stream_info[DBRI_PLAY]; - spin_lock_irqsave(&dbri->lock, flags); - if ((info->left <= 0) && (info->pipe >= 0)) { + if (info->pipe >= 0) { first_td = dbri->pipes[info->pipe].first_desc; dprintk(D_DESC, "xmit_descs play @ TD %d\n", first_td); /* Stream could be closed by the time we run. */ - if (first_td < 0) { - spin_unlock_irqrestore(&dbri->lock, flags); - return; - } - - cmd = dbri_cmdlock(dbri, NoGetLock); - *(cmd++) = DBRI_CMD(D_SDP, 0, - dbri->pipes[info->pipe].sdp - | D_SDP_P | D_SDP_EVERY | D_SDP_C); - *(cmd++) = dbri->dma_dvma + dbri_dma_off(desc, first_td); - dbri_cmdsend(dbri, cmd); + if (first_td >= 0) { + cmd = dbri_cmdlock(dbri, 2); + *(cmd++) = DBRI_CMD(D_SDP, 0, + dbri->pipes[info->pipe].sdp + | D_SDP_P | D_SDP_EVERY | D_SDP_C); + *(cmd++) = dbri->dma_dvma + dbri_dma_off(desc, first_td); + dbri_cmdsend(dbri, cmd, 2); - /* Reset our admin of the pipe & bytes written. */ - dbri->pipes[info->pipe].desc = first_td; - info->left = info->size; + /* Reset our admin of the pipe. */ + dbri->pipes[info->pipe].desc = first_td; + } } + spin_unlock_irqrestore(&dbri->lock, flags); } -static DECLARE_TASKLET(xmit_descs_task, xmit_descs, 0); - /* transmission_complete_intr() * * Called by main interrupt handler when DBRI signals transmission complete @@ -1775,9 +1742,9 @@ static DECLARE_TASKLET(xmit_descs_task, xmit_descs, 0); * them as available. Stops when the first descriptor is found without * TBC (Transmit Buffer Complete) set, or we've run through them all. * - * The DMA buffers are not released, but re-used. Since the transmit buffer - * descriptors are not clobbered, they can be re-submitted as is. This is - * done by the xmit_descs() tasklet above since that could take longer. + * The DMA buffers are not released. They form a ring buffer and + * they are filled by ALSA while others are transmitted by DMA. + * */ static void transmission_complete_intr(struct snd_dbri * dbri, int pipe) @@ -1803,21 +1770,9 @@ static void transmission_complete_intr(struct snd_dbri * dbri, int pipe) dprintk(D_INT, "TD %d, status 0x%02x\n", td, status); dbri->dma->desc[td].word4 = 0; /* Reset it for next time. */ - info->offset += dbri->descs[td].len; - info->left -= dbri->descs[td].len; - - /* On the last TD, transmit them all again. */ - if (dbri->descs[td].next == -1) { - if (info->left > 0) { - printk(KERN_WARNING - "%d bytes left after last transfer.\n", - info->left); - info->left = 0; - } - tasklet_schedule(&xmit_descs_task); - } + info->offset += DBRI_RD_CNT(dbri->dma->desc[td].word1); - td = dbri->descs[td].next; + td = dbri->next_desc[td]; dbri->pipes[pipe].desc = td; } @@ -1841,30 +1796,18 @@ static void reception_complete_intr(struct snd_dbri * dbri, int pipe) return; } - dbri->descs[rd].inuse = 0; - dbri->pipes[pipe].desc = dbri->descs[rd].next; + dbri->pipes[pipe].desc = dbri->next_desc[rd]; status = dbri->dma->desc[rd].word1; dbri->dma->desc[rd].word1 = 0; /* Reset it for next time. */ info = &dbri->stream_info[DBRI_REC]; info->offset += DBRI_RD_CNT(status); - info->left += DBRI_RD_CNT(status); /* FIXME: Check status */ dprintk(D_INT, "Recv RD %d, status 0x%02x, len %d\n", rd, DBRI_RD_STATUS(status), DBRI_RD_CNT(status)); - /* On the last TD, transmit them all again. */ - if (dbri->descs[rd].next == -1) { - if (info->left > info->size) { - printk(KERN_WARNING - "%d bytes recorded in %d size buffer.\n", - info->left, info->size); - } - tasklet_schedule(&xmit_descs_task); - } - /* Notify ALSA */ if (spin_is_locked(&dbri->lock)) { spin_unlock(&dbri->lock); @@ -1892,16 +1835,11 @@ static void dbri_process_one_interrupt(struct snd_dbri * dbri, int x) channel, code, rval); } - if (channel == D_INTR_CMD && command == D_WAIT) { - dbri->wait_ackd = val; - if (dbri->wait_send != val) { - printk(KERN_ERR "Processing wait command %d when %d was send.\n", - val, dbri->wait_send); - } - return; - } - switch (code) { + case D_INTR_CMDI: + if (command != D_WAIT) + printk(KERN_ERR "DBRI: Command read interrupt\n"); + break; case D_INTR_BRDY: reception_complete_intr(dbri, channel); break; @@ -1914,8 +1852,10 @@ static void dbri_process_one_interrupt(struct snd_dbri * dbri, int x) * resend SDP command with clear pipe bit (C) set */ { - volatile s32 *cmd; - + /* FIXME: do something useful in case of underrun */ + printk(KERN_ERR "DBRI: Underrun error\n"); +#if 0 + s32 *cmd; int pipe = channel; int td = dbri->pipes[pipe].desc; @@ -1926,6 +1866,7 @@ static void dbri_process_one_interrupt(struct snd_dbri * dbri, int x) | D_SDP_P | D_SDP_C | D_SDP_2SAME); *(cmd++) = dbri->dma_dvma + dbri_dma_off(desc, td); dbri_cmdsend(dbri, cmd); +#endif } break; case D_INTR_FXDT: @@ -1946,9 +1887,7 @@ static void dbri_process_one_interrupt(struct snd_dbri * dbri, int x) /* dbri_process_interrupt_buffer advances through the DBRI's interrupt * buffer until it finds a zero word (indicating nothing more to do * right now). Non-zero words require processing and are handed off - * to dbri_process_one_interrupt AFTER advancing the pointer. This - * order is important since we might recurse back into this function - * and need to make sure the pointer has been advanced first. + * to dbri_process_one_interrupt AFTER advancing the pointer. */ static void dbri_process_interrupt_buffer(struct snd_dbri * dbri) { @@ -1957,10 +1896,8 @@ static void dbri_process_interrupt_buffer(struct snd_dbri * dbri) while ((x = dbri->dma->intr[dbri->dbri_irqp]) != 0) { dbri->dma->intr[dbri->dbri_irqp] = 0; dbri->dbri_irqp++; - if (dbri->dbri_irqp == (DBRI_NO_INTS * DBRI_INT_BLK)) + if (dbri->dbri_irqp == DBRI_INT_BLK) dbri->dbri_irqp = 1; - else if ((dbri->dbri_irqp & (DBRI_INT_BLK - 1)) == 0) - dbri->dbri_irqp++; dbri_process_one_interrupt(dbri, x); } @@ -2020,8 +1957,6 @@ static irqreturn_t snd_dbri_interrupt(int irq, void *dev_id, dbri_process_interrupt_buffer(dbri); - /* FIXME: Write 0 into regs to ACK interrupt */ - spin_unlock(&dbri->lock); return IRQ_HANDLED; @@ -2039,8 +1974,8 @@ static struct snd_pcm_hardware snd_dbri_pcm_hw = { SNDRV_PCM_FMTBIT_A_LAW | SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_BE, - .rates = SNDRV_PCM_RATE_8000_48000, - .rate_min = 8000, + .rates = SNDRV_PCM_RATE_8000_48000 | SNDRV_PCM_RATE_5512, + .rate_min = 5512, .rate_max = 48000, .channels_min = 1, .channels_max = 2, @@ -2051,6 +1986,39 @@ static struct snd_pcm_hardware snd_dbri_pcm_hw = { .periods_max = 1024, }; +static int snd_hw_rule_format(struct snd_pcm_hw_params *params, + struct snd_pcm_hw_rule *rule) +{ + struct snd_interval *c = hw_param_interval(params, + SNDRV_PCM_HW_PARAM_CHANNELS); + struct snd_mask *f = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); + struct snd_mask fmt; + + snd_mask_any(&fmt); + if (c->min > 1) { + fmt.bits[0] &= SNDRV_PCM_FMTBIT_S16_BE; + return snd_mask_refine(f, &fmt); + } + return 0; +} + +static int snd_hw_rule_channels(struct snd_pcm_hw_params *params, + struct snd_pcm_hw_rule *rule) +{ + struct snd_interval *c = hw_param_interval(params, + SNDRV_PCM_HW_PARAM_CHANNELS); + struct snd_mask *f = hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT); + struct snd_interval ch; + + snd_interval_any(&ch); + if (!(f->bits[0] & SNDRV_PCM_FMTBIT_S16_BE)) { + ch.min = ch.max = 1; + ch.integer = 1; + return snd_interval_refine(c, &ch); + } + return 0; +} + static int snd_dbri_open(struct snd_pcm_substream *substream) { struct snd_dbri *dbri = snd_pcm_substream_chip(substream); @@ -2063,12 +2031,19 @@ static int snd_dbri_open(struct snd_pcm_substream *substream) spin_lock_irqsave(&dbri->lock, flags); info->substream = substream; - info->left = 0; info->offset = 0; info->dvma_buffer = 0; info->pipe = -1; spin_unlock_irqrestore(&dbri->lock, flags); + snd_pcm_hw_rule_add(runtime,0,SNDRV_PCM_HW_PARAM_CHANNELS, + snd_hw_rule_format, NULL, SNDRV_PCM_HW_PARAM_FORMAT, + -1); + snd_pcm_hw_rule_add(runtime,0,SNDRV_PCM_HW_PARAM_FORMAT, + snd_hw_rule_channels, NULL, + SNDRV_PCM_HW_PARAM_CHANNELS, + -1); + cs4215_open(dbri); return 0; @@ -2081,7 +2056,6 @@ static int snd_dbri_close(struct snd_pcm_substream *substream) dprintk(D_USR, "close audio output.\n"); info->substream = NULL; - info->left = 0; info->offset = 0; return 0; @@ -2134,6 +2108,7 @@ static int snd_dbri_hw_free(struct snd_pcm_substream *substream) struct snd_dbri *dbri = snd_pcm_substream_chip(substream); struct dbri_streaminfo *info = DBRI_STREAM(dbri, substream); int direction; + dprintk(D_USR, "hw_free.\n"); /* hw_free can get called multiple times. Only unmap the DMA once. @@ -2148,7 +2123,10 @@ static int snd_dbri_hw_free(struct snd_pcm_substream *substream) substream->runtime->buffer_size, direction); info->dvma_buffer = 0; } - info->pipe = -1; + if (info->pipe != -1) { + reset_pipe(dbri, info->pipe); + info->pipe = -1; + } return snd_pcm_lib_free_pages(substream); } @@ -2157,18 +2135,16 @@ static int snd_dbri_prepare(struct snd_pcm_substream *substream) { struct snd_dbri *dbri = snd_pcm_substream_chip(substream); struct dbri_streaminfo *info = DBRI_STREAM(dbri, substream); - struct snd_pcm_runtime *runtime = substream->runtime; int ret; info->size = snd_pcm_lib_buffer_bytes(substream); if (DBRI_STREAMNO(substream) == DBRI_PLAY) info->pipe = 4; /* Send pipe */ - else { + else info->pipe = 6; /* Receive pipe */ - info->left = info->size; /* To trigger submittal */ - } spin_lock_irq(&dbri->lock); + info->offset = 0; /* Setup the all the transmit/receive desciptors to cover the * whole DMA buffer. @@ -2176,8 +2152,6 @@ static int snd_dbri_prepare(struct snd_pcm_substream *substream) ret = setup_descs(dbri, DBRI_STREAMNO(substream), snd_pcm_lib_period_bytes(substream)); - runtime->stop_threshold = DBRI_TD_MAXCNT / runtime->channels; - spin_unlock_irq(&dbri->lock); dprintk(D_USR, "prepare audio output. %d bytes\n", info->size); @@ -2194,14 +2168,11 @@ static int snd_dbri_trigger(struct snd_pcm_substream *substream, int cmd) case SNDRV_PCM_TRIGGER_START: dprintk(D_USR, "start audio, period is %d bytes\n", (int)snd_pcm_lib_period_bytes(substream)); - /* Enable & schedule the tasklet that re-submits the TDs. */ - xmit_descs_task.data = (unsigned long)dbri; - tasklet_schedule(&xmit_descs_task); + /* Re-submit the TDs. */ + xmit_descs(dbri); break; case SNDRV_PCM_TRIGGER_STOP: dprintk(D_USR, "stop audio.\n"); - /* Make the tasklet bail out immediately. */ - xmit_descs_task.data = 0; reset_pipe(dbri, info->pipe); break; default: @@ -2219,8 +2190,8 @@ static snd_pcm_uframes_t snd_dbri_pointer(struct snd_pcm_substream *substream) ret = bytes_to_frames(substream->runtime, info->offset) % substream->runtime->buffer_size; - dprintk(D_USR, "I/O pointer: %ld frames, %d bytes left.\n", - ret, info->left); + dprintk(D_USR, "I/O pointer: %ld frames of %ld.\n", + ret, substream->runtime->buffer_size); return ret; } @@ -2254,7 +2225,6 @@ static int __devinit snd_dbri_pcm(struct snd_dbri * dbri) pcm->private_data = dbri; pcm->info_flags = 0; strcpy(pcm->name, dbri->card->shortname); - dbri->pcm = pcm; if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS, @@ -2303,7 +2273,6 @@ static int snd_cs4215_put_volume(struct snd_kcontrol *kcontrol, { struct snd_dbri *dbri = snd_kcontrol_chip(kcontrol); struct dbri_streaminfo *info = &dbri->stream_info[kcontrol->private_value]; - unsigned long flags; int changed = 0; if (info->left_gain != ucontrol->value.integer.value[0]) { @@ -2318,13 +2287,9 @@ static int snd_cs4215_put_volume(struct snd_kcontrol *kcontrol, /* First mute outputs, and wait 1/8000 sec (125 us) * to make sure this takes. This avoids clicking noises. */ - spin_lock_irqsave(&dbri->lock, flags); - cs4215_setdata(dbri, 1); udelay(125); cs4215_setdata(dbri, 0); - - spin_unlock_irqrestore(&dbri->lock, flags); } return changed; } @@ -2371,7 +2336,6 @@ static int snd_cs4215_put_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_dbri *dbri = snd_kcontrol_chip(kcontrol); - unsigned long flags; int elem = kcontrol->private_value & 0xff; int shift = (kcontrol->private_value >> 8) & 0xff; int mask = (kcontrol->private_value >> 16) & 0xff; @@ -2404,13 +2368,9 @@ static int snd_cs4215_put_single(struct snd_kcontrol *kcontrol, /* First mute outputs, and wait 1/8000 sec (125 us) * to make sure this takes. This avoids clicking noises. */ - spin_lock_irqsave(&dbri->lock, flags); - cs4215_setdata(dbri, 1); udelay(125); cs4215_setdata(dbri, 0); - - spin_unlock_irqrestore(&dbri->lock, flags); } return changed; } @@ -2473,7 +2433,6 @@ static int __init snd_dbri_mixer(struct snd_dbri * dbri) for (idx = DBRI_REC; idx < DBRI_NO_STREAMS; idx++) { dbri->stream_info[idx].left_gain = 0; dbri->stream_info[idx].right_gain = 0; - dbri->stream_info[idx].balance = DBRI_MID_BALANCE; } return 0; @@ -2505,12 +2464,11 @@ static void dbri_debug_read(struct snd_info_entry * entry, struct dbri_pipe *pptr = &dbri->pipes[pipe]; snd_iprintf(buffer, "Pipe %d: %s SDP=0x%x desc=%d, " - "len=%d @ %d prev: %d next %d\n", + "len=%d next %d\n", pipe, - (pptr->direction == - PIPEinput ? "input" : "output"), pptr->sdp, - pptr->desc, pptr->length, pptr->cycle, - pptr->prevpipe, pptr->nextpipe); + ((pptr->sdp & D_SDP_TO_SER) ? "output" : "input"), + pptr->sdp, pptr->desc, + pptr->length, pptr->nextpipe); } } } @@ -2549,7 +2507,6 @@ static int __init snd_dbri_create(struct snd_card *card, dbri->card = card; dbri->sdev = sdev; dbri->irq = irq->pri; - dbri->dbri_version = sdev->prom_name[9]; dbri->dma = sbus_alloc_consistent(sdev, sizeof(struct dbri_dma), &dbri->dma_dvma); @@ -2669,7 +2626,7 @@ static int __init dbri_attach(int prom_node, struct sbus_dev *sdev) printk(KERN_INFO "audio%d at %p (irq %d) is DBRI(%c)+CS4215(%d)\n", dev, dbri->regs, - dbri->irq, dbri->dbri_version, dbri->mm.version); + dbri->irq, sdev->prom_name[9], dbri->mm.version); dev++; return 0; |